wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2023 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         for_each_rdev(rdev) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 static int validate_he_capa(const struct nlattr *attr,
 289                             struct netlink_ext_ack *extack)
 290 {
 291         if (!ieee80211_he_capa_size_ok(nla_data(attr), nla_len(attr)))
 292                 return -EINVAL;
 293
 294         return 0;
 295 }
 296
 297 /* policy for the attributes */
 298 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 299
 300 static const struct nla_policy
 301 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 302         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 303         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 304                                         .len = U8_MAX },
 305         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 306                                              .len = U8_MAX },
 307 };
 308
 309 static const struct nla_policy
 310 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 311         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 312         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 313         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 314                 NLA_POLICY_MAX(NLA_U8, 15),
 315         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 316         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 317                 NLA_POLICY_MAX(NLA_U8, 15),
 318         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 319                 NLA_POLICY_MAX(NLA_U8, 31),
 320         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 321         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 322         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 323         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 324         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 325         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 326         [NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR] = { .type = NLA_U8 },
 327 };
 328
 329 static const struct nla_policy
 330 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 331         [NL80211_PMSR_TYPE_FTM] =
 332                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 333 };
 334
 335 static const struct nla_policy
 336 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 337         [NL80211_PMSR_REQ_ATTR_DATA] =
 338                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 339         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 340 };
 341
 342 static const struct nla_policy
 343 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 344         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 345         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 346         [NL80211_PMSR_PEER_ATTR_REQ] =
 347                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 348         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 349 };
 350
 351 static const struct nla_policy
 352 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 353         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 357         [NL80211_PMSR_ATTR_PEERS] =
 358                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 359 };
 360
 361 static const struct nla_policy
 362 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 363         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 364                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 365         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 366                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 367         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 368                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 369         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 370                 NLA_POLICY_EXACT_LEN(8),
 371         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 372                 NLA_POLICY_EXACT_LEN(8),
 373         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 374 };
 375
 376 static const struct nla_policy
 377 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 378         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 379         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 380         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 381 };
 382
 383 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 384         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 385                                     .len = NL80211_MAX_SUPP_RATES },
 386         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 387                                 .len = NL80211_MAX_SUPP_HT_RATES },
 388         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 389         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 390         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 391         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 392                                                    NL80211_RATE_INFO_HE_GI_0_8,
 393                                                    NL80211_RATE_INFO_HE_GI_3_2),
 394         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 395                                                    NL80211_RATE_INFO_HE_1XLTF,
 396                                                    NL80211_RATE_INFO_HE_4XLTF),
 397 };
 398
 399 static const struct nla_policy
 400 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 401         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 403         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 404         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 405         [NL80211_TID_CONFIG_ATTR_NOACK] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 409         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 410                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 411         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 412                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 413         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 414                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 415         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 416                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 417         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 418                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 425         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 426                         NLA_POLICY_RANGE(NLA_BINARY,
 427                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 428                                          IEEE80211_MAX_DATA_LEN),
 429 };
 430
 431 static const struct nla_policy
 432 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 434         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 435                                                        .len = IEEE80211_MAX_DATA_LEN }
 436 };
 437
 438 static const struct nla_policy
 439 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 440         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 441         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 442 };
 443
 444 static const struct nla_policy
 445 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 446         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 447         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 448 };
 449
 450 static const struct nla_policy
 451 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 453         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 454                                                 NLA_POLICY_MIN(NLA_U8, 1),
 455         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 456         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 457         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 458 };
 459
 460 static const struct nla_policy
 461 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 462         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 463         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 464 };
 465
 466 static const struct netlink_range_validation nl80211_punct_bitmap_range = {
 467         .min = 0,
 468         .max = 0xffff,
 469 };
 470
 471 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 472         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 473         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 475                                       .len = 20-1 },
 476         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 477
 478         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 479         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 480         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 481                                                 NL80211_EDMG_CHANNELS_MIN,
 482                                                 NL80211_EDMG_CHANNELS_MAX),
 483         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 484                                                 NL80211_EDMG_BW_CONFIG_MIN,
 485                                                 NL80211_EDMG_BW_CONFIG_MAX),
 486
 487         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 488         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 489         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 490         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 491
 492         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 493         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 494         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 495         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 497         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 498
 499         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 500         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 501         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 502
 503         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 504         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 505
 506         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 507         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 508                                     .len = WLAN_MAX_KEY_LEN },
 509         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 510         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 511         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 513         [NL80211_ATTR_KEY_TYPE] =
 514                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 515
 516         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 517         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 518         [NL80211_ATTR_BEACON_HEAD] =
 519                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 520                                        IEEE80211_MAX_DATA_LEN),
 521         [NL80211_ATTR_BEACON_TAIL] =
 522                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 523                                        IEEE80211_MAX_DATA_LEN),
 524         [NL80211_ATTR_STA_AID] =
 525                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 526         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 527         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 528         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 529                                                .len = NL80211_MAX_SUPP_RATES },
 530         [NL80211_ATTR_STA_PLINK_ACTION] =
 531                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 532         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 533                 NLA_POLICY_RANGE(NLA_U8,
 534                                  NL80211_TX_POWER_AUTOMATIC,
 535                                  NL80211_TX_POWER_FIXED),
 536         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 537         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 538         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 539         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 540                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 541         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 542
 543         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 544         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 545         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 546
 547         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 548         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 549         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 550         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 551                                            .len = NL80211_MAX_SUPP_RATES },
 552         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 553
 554         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 555         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 556
 557         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 558
 559         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 560         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 561                                                    validate_ie_attr,
 562                                                    IEEE80211_MAX_DATA_LEN),
 563         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 564         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 565
 566         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 567                                 .len = IEEE80211_MAX_SSID_LEN },
 568         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 569         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 570         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 573                                                   NL80211_MFP_NO,
 574                                                   NL80211_MFP_OPTIONAL),
 575         [NL80211_ATTR_STA_FLAGS2] =
 576                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 577         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 578         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 579         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 583         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 584         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 585         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 586         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 587         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 588         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 589         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 590         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 591         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 592                                  .len = IEEE80211_MAX_DATA_LEN },
 593         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 594         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 595                                                    NL80211_PS_DISABLED,
 596                                                    NL80211_PS_ENABLED),
 597         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 598         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 600         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 601         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 602         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 603         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 604         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 605         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 606         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 608         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_STA_PLINK_STATE] =
 610                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 611         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 612         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 613         [NL80211_ATTR_MESH_PEER_AID] =
 614                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 615         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 616         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 617         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 618         [NL80211_ATTR_HIDDEN_SSID] =
 619                 NLA_POLICY_RANGE(NLA_U32,
 620                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 621                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 622         [NL80211_ATTR_IE_PROBE_RESP] =
 623                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 624                                        IEEE80211_MAX_DATA_LEN),
 625         [NL80211_ATTR_IE_ASSOC_RESP] =
 626                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 627                                        IEEE80211_MAX_DATA_LEN),
 628         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 630         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 631         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 633         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 634         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 635         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 638         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 640                                       .len = IEEE80211_MAX_DATA_LEN },
 641         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 642         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 643         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 644                 .len = NL80211_HT_CAPABILITY_LEN
 645         },
 646         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 647         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 648         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 649         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 650         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 651
 652         /* need to include at least Auth Transaction and Status Code */
 653         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 654
 655         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 656         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 657         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 658         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 659         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 660                 NLA_POLICY_RANGE(NLA_U32,
 661                                  NL80211_MESH_POWER_UNKNOWN + 1,
 662                                  NL80211_MESH_POWER_MAX),
 663         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 664         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 665         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 666         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 667         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 668         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 669         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 670                 .len = NL80211_VHT_CAPABILITY_LEN,
 671         },
 672         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 673         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 674                                   .len = IEEE80211_MAX_DATA_LEN },
 675         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 676         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 677                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 678         [NL80211_ATTR_PEER_AID] =
 679                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 680         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 681         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 682         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 683         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 684         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 685         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 686         /*
 687          * The value of the Length field of the Supported Operating
 688          * Classes element is between 2 and 253.
 689          */
 690         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 691                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 692         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 693         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 694         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 695         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 696         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 697         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 698                                                   IEEE80211_QOS_MAP_LEN_MIN,
 699                                                   IEEE80211_QOS_MAP_LEN_MAX),
 700         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 701         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 702         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 703         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 704         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 705         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 706         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 707         [NL80211_ATTR_USER_PRIO] =
 708                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 709         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 710         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 711         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 712         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 713         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 714         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 715         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 716         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 718         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 719         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 720                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 721         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 722                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 723         },
 724         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 725         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 726         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 727         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 728         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 729                                     .len = FILS_MAX_KEK_LEN },
 730         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 731         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 732         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 733         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 734         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 735                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 736         },
 737         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 738         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 739                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 740         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 741                                           .len = FILS_ERP_MAX_REALM_LEN },
 742         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 743         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 744                                         .len = FILS_ERP_MAX_RRK_LEN },
 745         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 746         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 747         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 748         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 749         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 750
 751         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 752         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 753         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 754         [NL80211_ATTR_HE_CAPABILITY] =
 755                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 756                                        NL80211_HE_MAX_CAPABILITY_LEN),
 757         [NL80211_ATTR_FTM_RESPONDER] =
 758                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 759         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 760         [NL80211_ATTR_PEER_MEASUREMENTS] =
 761                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 762         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 763         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 764                                         .len = SAE_PASSWORD_MAX_LEN },
 765         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 767         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 768         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 769         [NL80211_ATTR_TID_CONFIG] =
 770                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 771         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 772         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 773         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 774         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 775         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 776         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 777         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 779         [NL80211_ATTR_FILS_DISCOVERY] =
 780                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 781         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 782                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 783         [NL80211_ATTR_S1G_CAPABILITY] =
 784                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 785         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 786                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 787         [NL80211_ATTR_SAE_PWE] =
 788                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 789                                  NL80211_SAE_PWE_BOTH),
 790         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 791         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 792         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 793         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 794         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 795         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 796         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 797         [NL80211_ATTR_MBSSID_CONFIG] =
 798                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 799         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 800         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 802         [NL80211_ATTR_EHT_CAPABILITY] =
 803                 NLA_POLICY_RANGE(NLA_BINARY,
 804                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 805                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 806         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MLO_LINKS] =
 808                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 809         [NL80211_ATTR_MLO_LINK_ID] =
 810                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 811         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 812         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 813         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 814         [NL80211_ATTR_PUNCT_BITMAP] =
 815                 NLA_POLICY_FULL_RANGE(NLA_U32, &nl80211_punct_bitmap_range),
 816
 817         [NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS] = { .type = NLA_U16 },
 818         [NL80211_ATTR_HW_TIMESTAMP_ENABLED] = { .type = NLA_FLAG },
 819         [NL80211_ATTR_EMA_RNR_ELEMS] = { .type = NLA_NESTED },
 820         [NL80211_ATTR_MLO_LINK_DISABLED] = { .type = NLA_FLAG },
 821         [NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA] = { .type = NLA_FLAG },
 822         [NL80211_ATTR_MLO_TTLM_DLINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 823         [NL80211_ATTR_MLO_TTLM_ULINK] = NLA_POLICY_EXACT_LEN(sizeof(u16) * 8),
 824 };
 825
 826 /* policy for the key attributes */
 827 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 828         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 829         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 830         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 831         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 832         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 833         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 834         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 835         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 836         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 837 };
 838
 839 /* policy for the key default flags */
 840 static const struct nla_policy
 841 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 842         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 843         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 844 };
 845
 846 #ifdef CONFIG_PM
 847 /* policy for WoWLAN attributes */
 848 static const struct nla_policy
 849 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 850         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 851         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 852         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 853         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 854         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 855         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 856         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 857         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 858         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 859         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 860 };
 861
 862 static const struct nla_policy
 863 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 864         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 865         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 866         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 867         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 868         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 869         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 870         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 871                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 872         },
 873         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 874                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 875         },
 876         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 877         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 878         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 879 };
 880 #endif /* CONFIG_PM */
 881
 882 /* policy for coalesce rule attributes */
 883 static const struct nla_policy
 884 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 885         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 886         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 887                 NLA_POLICY_RANGE(NLA_U32,
 888                                  NL80211_COALESCE_CONDITION_MATCH,
 889                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 890         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 891 };
 892
 893 /* policy for GTK rekey offload attributes */
 894 static const struct nla_policy
 895 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 896         [NL80211_REKEY_DATA_KEK] = {
 897                 .type = NLA_BINARY,
 898                 .len = NL80211_KEK_EXT_LEN
 899         },
 900         [NL80211_REKEY_DATA_KCK] = {
 901                 .type = NLA_BINARY,
 902                 .len = NL80211_KCK_EXT_LEN_32
 903         },
 904         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 905         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 906 };
 907
 908 static const struct nla_policy
 909 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 910         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 911         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 912         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 913         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 914         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 919         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 920                                                  .len = IEEE80211_MAX_SSID_LEN },
 921         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 922         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 923         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 924                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 925 };
 926
 927 static const struct nla_policy
 928 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 929         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 930         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 931 };
 932
 933 static const struct nla_policy
 934 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 935         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 936         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 937         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 938                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 939         },
 940 };
 941
 942 /* policy for NAN function attributes */
 943 static const struct nla_policy
 944 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 945         [NL80211_NAN_FUNC_TYPE] =
 946                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 947         [NL80211_NAN_FUNC_SERVICE_ID] = {
 948                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 949         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 950         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 951         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 952         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 953         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 954         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 955         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 956         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 957         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 958                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 959         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 960         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 961         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 962         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 963         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 964 };
 965
 966 /* policy for Service Response Filter attributes */
 967 static const struct nla_policy
 968 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 969         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 970         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 971                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 972         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 973         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 974 };
 975
 976 /* policy for packet pattern attributes */
 977 static const struct nla_policy
 978 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 979         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 980         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 981         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 982 };
 983
 984 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 985                                      struct cfg80211_registered_device **rdev,
 986                                      struct wireless_dev **wdev,
 987                                      struct nlattr **attrbuf)
 988 {
 989         int err;
 990
 991         if (!cb->args[0]) {
 992                 struct nlattr **attrbuf_free = NULL;
 993
 994                 if (!attrbuf) {
 995                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 996                                           GFP_KERNEL);
 997                         if (!attrbuf)
 998                                 return -ENOMEM;
 999                         attrbuf_free = attrbuf;
1000                 }
1001
1002                 err = nlmsg_parse_deprecated(cb->nlh,
1003                                              GENL_HDRLEN + nl80211_fam.hdrsize,
1004                                              attrbuf, nl80211_fam.maxattr,
1005                                              nl80211_policy, NULL);
1006                 if (err) {
1007                         kfree(attrbuf_free);
1008                         return err;
1009                 }
1010
1011                 rtnl_lock();
1012                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
1013                                                    attrbuf);
1014                 kfree(attrbuf_free);
1015                 if (IS_ERR(*wdev)) {
1016                         rtnl_unlock();
1017                         return PTR_ERR(*wdev);
1018                 }
1019                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1020                 mutex_lock(&(*rdev)->wiphy.mtx);
1021                 rtnl_unlock();
1022                 /* 0 is the first index - add 1 to parse only once */
1023                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1024                 cb->args[1] = (*wdev)->identifier;
1025         } else {
1026                 /* subtract the 1 again here */
1027                 struct wiphy *wiphy;
1028                 struct wireless_dev *tmp;
1029
1030                 rtnl_lock();
1031                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1032                 if (!wiphy) {
1033                         rtnl_unlock();
1034                         return -ENODEV;
1035                 }
1036                 *rdev = wiphy_to_rdev(wiphy);
1037                 *wdev = NULL;
1038
1039                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1040                         if (tmp->identifier == cb->args[1]) {
1041                                 *wdev = tmp;
1042                                 break;
1043                         }
1044                 }
1045
1046                 if (!*wdev) {
1047                         rtnl_unlock();
1048                         return -ENODEV;
1049                 }
1050                 mutex_lock(&(*rdev)->wiphy.mtx);
1051                 rtnl_unlock();
1052         }
1053
1054         return 0;
1055 }
1056
1057 /* message building helper */
1058 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1059                      int flags, u8 cmd)
1060 {
1061         /* since there is no private header just add the generic one */
1062         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1063 }
1064
1065 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1066                                      const struct ieee80211_reg_rule *rule)
1067 {
1068         int j;
1069         struct nlattr *nl_wmm_rules =
1070                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1071
1072         if (!nl_wmm_rules)
1073                 goto nla_put_failure;
1074
1075         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1076                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1077
1078                 if (!nl_wmm_rule)
1079                         goto nla_put_failure;
1080
1081                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1082                                 rule->wmm_rule.client[j].cw_min) ||
1083                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1084                                 rule->wmm_rule.client[j].cw_max) ||
1085                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1086                                rule->wmm_rule.client[j].aifsn) ||
1087                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1088                                 rule->wmm_rule.client[j].cot))
1089                         goto nla_put_failure;
1090
1091                 nla_nest_end(msg, nl_wmm_rule);
1092         }
1093         nla_nest_end(msg, nl_wmm_rules);
1094
1095         return 0;
1096
1097 nla_put_failure:
1098         return -ENOBUFS;
1099 }
1100
1101 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1102                                    struct ieee80211_channel *chan,
1103                                    bool large)
1104 {
1105         /* Some channels must be completely excluded from the
1106          * list to protect old user-space tools from breaking
1107          */
1108         if (!large && chan->flags &
1109             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1110                 return 0;
1111         if (!large && chan->freq_offset)
1112                 return 0;
1113
1114         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1115                         chan->center_freq))
1116                 goto nla_put_failure;
1117
1118         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1119                 goto nla_put_failure;
1120
1121         if ((chan->flags & IEEE80211_CHAN_PSD) &&
1122             nla_put_s8(msg, NL80211_FREQUENCY_ATTR_PSD, chan->psd))
1123                 goto nla_put_failure;
1124
1125         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1126             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1127                 goto nla_put_failure;
1128         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1129                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1130                         goto nla_put_failure;
1131                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1132                         goto nla_put_failure;
1133         }
1134         if (chan->flags & IEEE80211_CHAN_RADAR) {
1135                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1136                         goto nla_put_failure;
1137                 if (large) {
1138                         u32 time;
1139
1140                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1141
1142                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1143                                         chan->dfs_state))
1144                                 goto nla_put_failure;
1145                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1146                                         time))
1147                                 goto nla_put_failure;
1148                         if (nla_put_u32(msg,
1149                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1150                                         chan->dfs_cac_ms))
1151                                 goto nla_put_failure;
1152                 }
1153         }
1154
1155         if (large) {
1156                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1157                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1158                         goto nla_put_failure;
1159                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1160                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1161                         goto nla_put_failure;
1162                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1163                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1164                         goto nla_put_failure;
1165                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1166                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1167                         goto nla_put_failure;
1168                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1169                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1170                         goto nla_put_failure;
1171                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1172                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1173                         goto nla_put_failure;
1174                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1175                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1176                         goto nla_put_failure;
1177                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1178                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1179                         goto nla_put_failure;
1180                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1181                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1182                         goto nla_put_failure;
1183                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1184                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1185                         goto nla_put_failure;
1186                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1187                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1188                         goto nla_put_failure;
1189                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1190                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1191                         goto nla_put_failure;
1192                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1193                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1194                         goto nla_put_failure;
1195                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1196                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1197                         goto nla_put_failure;
1198                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1199                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1200                         goto nla_put_failure;
1201                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1202                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1203                         goto nla_put_failure;
1204                 if ((chan->flags & IEEE80211_CHAN_DFS_CONCURRENT) &&
1205                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DFS_CONCURRENT))
1206                         goto nla_put_failure;
1207                 if ((chan->flags & IEEE80211_CHAN_NO_UHB_VLP_CLIENT) &&
1208                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_UHB_VLP_CLIENT))
1209                         goto nla_put_failure;
1210                 if ((chan->flags & IEEE80211_CHAN_NO_UHB_AFC_CLIENT) &&
1211                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_UHB_AFC_CLIENT))
1212                         goto nla_put_failure;
1213         }
1214
1215         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1216                         DBM_TO_MBM(chan->max_power)))
1217                 goto nla_put_failure;
1218
1219         if (large) {
1220                 const struct ieee80211_reg_rule *rule =
1221                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1222
1223                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1224                         if (nl80211_msg_put_wmm_rules(msg, rule))
1225                                 goto nla_put_failure;
1226                 }
1227         }
1228
1229         return 0;
1230
1231  nla_put_failure:
1232         return -ENOBUFS;
1233 }
1234
1235 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1236                                   struct cfg80211_txq_stats *txqstats,
1237                                   int attrtype)
1238 {
1239         struct nlattr *txqattr;
1240
1241 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1242         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1243             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1244                 return false;                                             \
1245         } while (0)
1246
1247         txqattr = nla_nest_start_noflag(msg, attrtype);
1248         if (!txqattr)
1249                 return false;
1250
1251         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1252         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1253         PUT_TXQVAL_U32(FLOWS, flows);
1254         PUT_TXQVAL_U32(DROPS, drops);
1255         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1256         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1257         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1258         PUT_TXQVAL_U32(COLLISIONS, collisions);
1259         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1260         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1261         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1262         nla_nest_end(msg, txqattr);
1263
1264 #undef PUT_TXQVAL_U32
1265         return true;
1266 }
1267
1268 /* netlink command implementations */
1269
1270 /**
1271  * nl80211_link_id - return link ID
1272  * @attrs: attributes to look at
1273  *
1274  * Returns: the link ID or 0 if not given
1275  *
1276  * Note this function doesn't do any validation of the link
1277  * ID validity wrt. links that were actually added, so it must
1278  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1279  * or if additional validation is done.
1280  */
1281 static unsigned int nl80211_link_id(struct nlattr **attrs)
1282 {
1283         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1284
1285         if (!linkid)
1286                 return 0;
1287
1288         return nla_get_u8(linkid);
1289 }
1290
1291 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1292 {
1293         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1294
1295         if (!linkid)
1296                 return -1;
1297
1298         return nla_get_u8(linkid);
1299 }
1300
1301 struct key_parse {
1302         struct key_params p;
1303         int idx;
1304         int type;
1305         bool def, defmgmt, defbeacon;
1306         bool def_uni, def_multi;
1307 };
1308
1309 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1310                                  struct key_parse *k)
1311 {
1312         struct nlattr *tb[NL80211_KEY_MAX + 1];
1313         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1314                                               nl80211_key_policy,
1315                                               info->extack);
1316         if (err)
1317                 return err;
1318
1319         k->def = !!tb[NL80211_KEY_DEFAULT];
1320         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1321         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1322
1323         if (k->def) {
1324                 k->def_uni = true;
1325                 k->def_multi = true;
1326         }
1327         if (k->defmgmt || k->defbeacon)
1328                 k->def_multi = true;
1329
1330         if (tb[NL80211_KEY_IDX])
1331                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1332
1333         if (tb[NL80211_KEY_DATA]) {
1334                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1335                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1336         }
1337
1338         if (tb[NL80211_KEY_SEQ]) {
1339                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1340                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1341         }
1342
1343         if (tb[NL80211_KEY_CIPHER])
1344                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1345
1346         if (tb[NL80211_KEY_TYPE])
1347                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1348
1349         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1350                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1351
1352                 err = nla_parse_nested_deprecated(kdt,
1353                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1354                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1355                                                   nl80211_key_default_policy,
1356                                                   info->extack);
1357                 if (err)
1358                         return err;
1359
1360                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1361                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1362         }
1363
1364         if (tb[NL80211_KEY_MODE])
1365                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1366
1367         return 0;
1368 }
1369
1370 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1371 {
1372         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1373                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1374                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1375         }
1376
1377         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1378                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1379                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1380         }
1381
1382         if (info->attrs[NL80211_ATTR_KEY_IDX])
1383                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1384
1385         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1386                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1387
1388         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1389         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1390
1391         if (k->def) {
1392                 k->def_uni = true;
1393                 k->def_multi = true;
1394         }
1395         if (k->defmgmt)
1396                 k->def_multi = true;
1397
1398         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1399                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1400
1401         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1402                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1403                 int err = nla_parse_nested_deprecated(kdt,
1404                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1405                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1406                                                       nl80211_key_default_policy,
1407                                                       info->extack);
1408                 if (err)
1409                         return err;
1410
1411                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1412                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1413         }
1414
1415         return 0;
1416 }
1417
1418 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1419 {
1420         int err;
1421
1422         memset(k, 0, sizeof(*k));
1423         k->idx = -1;
1424         k->type = -1;
1425
1426         if (info->attrs[NL80211_ATTR_KEY])
1427                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1428         else
1429                 err = nl80211_parse_key_old(info, k);
1430
1431         if (err)
1432                 return err;
1433
1434         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1435             (k->defbeacon ? 1 : 0) > 1) {
1436                 GENL_SET_ERR_MSG(info,
1437                                  "key with multiple default flags is invalid");
1438                 return -EINVAL;
1439         }
1440
1441         if (k->defmgmt || k->defbeacon) {
1442                 if (k->def_uni || !k->def_multi) {
1443                         GENL_SET_ERR_MSG(info,
1444                                          "defmgmt/defbeacon key must be mcast");
1445                         return -EINVAL;
1446                 }
1447         }
1448
1449         if (k->idx != -1) {
1450                 if (k->defmgmt) {
1451                         if (k->idx < 4 || k->idx > 5) {
1452                                 GENL_SET_ERR_MSG(info,
1453                                                  "defmgmt key idx not 4 or 5");
1454                                 return -EINVAL;
1455                         }
1456                 } else if (k->defbeacon) {
1457                         if (k->idx < 6 || k->idx > 7) {
1458                                 GENL_SET_ERR_MSG(info,
1459                                                  "defbeacon key idx not 6 or 7");
1460                                 return -EINVAL;
1461                         }
1462                 } else if (k->def) {
1463                         if (k->idx < 0 || k->idx > 3) {
1464                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1465                                 return -EINVAL;
1466                         }
1467                 } else {
1468                         if (k->idx < 0 || k->idx > 7) {
1469                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1470                                 return -EINVAL;
1471                         }
1472                 }
1473         }
1474
1475         return 0;
1476 }
1477
1478 static struct cfg80211_cached_keys *
1479 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1480                        struct genl_info *info, bool *no_ht)
1481 {
1482         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1483         struct key_parse parse;
1484         struct nlattr *key;
1485         struct cfg80211_cached_keys *result;
1486         int rem, err, def = 0;
1487         bool have_key = false;
1488
1489         nla_for_each_nested(key, keys, rem) {
1490                 have_key = true;
1491                 break;
1492         }
1493
1494         if (!have_key)
1495                 return NULL;
1496
1497         result = kzalloc(sizeof(*result), GFP_KERNEL);
1498         if (!result)
1499                 return ERR_PTR(-ENOMEM);
1500
1501         result->def = -1;
1502
1503         nla_for_each_nested(key, keys, rem) {
1504                 memset(&parse, 0, sizeof(parse));
1505                 parse.idx = -1;
1506
1507                 err = nl80211_parse_key_new(info, key, &parse);
1508                 if (err)
1509                         goto error;
1510                 err = -EINVAL;
1511                 if (!parse.p.key)
1512                         goto error;
1513                 if (parse.idx < 0 || parse.idx > 3) {
1514                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1515                         goto error;
1516                 }
1517                 if (parse.def) {
1518                         if (def) {
1519                                 GENL_SET_ERR_MSG(info,
1520                                                  "only one key can be default");
1521                                 goto error;
1522                         }
1523                         def = 1;
1524                         result->def = parse.idx;
1525                         if (!parse.def_uni || !parse.def_multi)
1526                                 goto error;
1527                 } else if (parse.defmgmt)
1528                         goto error;
1529                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1530                                                      parse.idx, false, NULL);
1531                 if (err)
1532                         goto error;
1533                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1534                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1535                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1536                         err = -EINVAL;
1537                         goto error;
1538                 }
1539                 result->params[parse.idx].cipher = parse.p.cipher;
1540                 result->params[parse.idx].key_len = parse.p.key_len;
1541                 result->params[parse.idx].key = result->data[parse.idx];
1542                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1543
1544                 /* must be WEP key if we got here */
1545                 if (no_ht)
1546                         *no_ht = true;
1547         }
1548
1549         if (result->def < 0) {
1550                 err = -EINVAL;
1551                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1552                 goto error;
1553         }
1554
1555         return result;
1556  error:
1557         kfree(result);
1558         return ERR_PTR(err);
1559 }
1560
1561 static int nl80211_key_allowed(struct wireless_dev *wdev)
1562 {
1563         lockdep_assert_wiphy(wdev->wiphy);
1564
1565         switch (wdev->iftype) {
1566         case NL80211_IFTYPE_AP:
1567         case NL80211_IFTYPE_AP_VLAN:
1568         case NL80211_IFTYPE_P2P_GO:
1569         case NL80211_IFTYPE_MESH_POINT:
1570                 break;
1571         case NL80211_IFTYPE_ADHOC:
1572                 if (wdev->u.ibss.current_bss)
1573                         return 0;
1574                 return -ENOLINK;
1575         case NL80211_IFTYPE_STATION:
1576         case NL80211_IFTYPE_P2P_CLIENT:
1577                 if (wdev->connected)
1578                         return 0;
1579                 return -ENOLINK;
1580         case NL80211_IFTYPE_NAN:
1581                 if (wiphy_ext_feature_isset(wdev->wiphy,
1582                                             NL80211_EXT_FEATURE_SECURE_NAN))
1583                         return 0;
1584                 return -EINVAL;
1585         case NL80211_IFTYPE_UNSPECIFIED:
1586         case NL80211_IFTYPE_OCB:
1587         case NL80211_IFTYPE_MONITOR:
1588         case NL80211_IFTYPE_P2P_DEVICE:
1589         case NL80211_IFTYPE_WDS:
1590         case NUM_NL80211_IFTYPES:
1591                 return -EINVAL;
1592         }
1593
1594         return 0;
1595 }
1596
1597 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1598                                                         u32 freq)
1599 {
1600         struct ieee80211_channel *chan;
1601
1602         chan = ieee80211_get_channel_khz(wiphy, freq);
1603         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1604                 return NULL;
1605         return chan;
1606 }
1607
1608 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1609 {
1610         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1611         int i;
1612
1613         if (!nl_modes)
1614                 goto nla_put_failure;
1615
1616         i = 0;
1617         while (ifmodes) {
1618                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1619                         goto nla_put_failure;
1620                 ifmodes >>= 1;
1621                 i++;
1622         }
1623
1624         nla_nest_end(msg, nl_modes);
1625         return 0;
1626
1627 nla_put_failure:
1628         return -ENOBUFS;
1629 }
1630
1631 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1632                                           struct sk_buff *msg,
1633                                           bool large)
1634 {
1635         struct nlattr *nl_combis;
1636         int i, j;
1637
1638         nl_combis = nla_nest_start_noflag(msg,
1639                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1640         if (!nl_combis)
1641                 goto nla_put_failure;
1642
1643         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1644                 const struct ieee80211_iface_combination *c;
1645                 struct nlattr *nl_combi, *nl_limits;
1646
1647                 c = &wiphy->iface_combinations[i];
1648
1649                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1650                 if (!nl_combi)
1651                         goto nla_put_failure;
1652
1653                 nl_limits = nla_nest_start_noflag(msg,
1654                                                   NL80211_IFACE_COMB_LIMITS);
1655                 if (!nl_limits)
1656                         goto nla_put_failure;
1657
1658                 for (j = 0; j < c->n_limits; j++) {
1659                         struct nlattr *nl_limit;
1660
1661                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1662                         if (!nl_limit)
1663                                 goto nla_put_failure;
1664                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1665                                         c->limits[j].max))
1666                                 goto nla_put_failure;
1667                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1668                                                 c->limits[j].types))
1669                                 goto nla_put_failure;
1670                         nla_nest_end(msg, nl_limit);
1671                 }
1672
1673                 nla_nest_end(msg, nl_limits);
1674
1675                 if (c->beacon_int_infra_match &&
1676                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1677                         goto nla_put_failure;
1678                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1679                                 c->num_different_channels) ||
1680                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1681                                 c->max_interfaces))
1682                         goto nla_put_failure;
1683                 if (large &&
1684                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1685                                 c->radar_detect_widths) ||
1686                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1687                                 c->radar_detect_regions)))
1688                         goto nla_put_failure;
1689                 if (c->beacon_int_min_gcd &&
1690                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1691                                 c->beacon_int_min_gcd))
1692                         goto nla_put_failure;
1693
1694                 nla_nest_end(msg, nl_combi);
1695         }
1696
1697         nla_nest_end(msg, nl_combis);
1698
1699         return 0;
1700 nla_put_failure:
1701         return -ENOBUFS;
1702 }
1703
1704 #ifdef CONFIG_PM
1705 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1706                                         struct sk_buff *msg)
1707 {
1708         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1709         struct nlattr *nl_tcp;
1710
1711         if (!tcp)
1712                 return 0;
1713
1714         nl_tcp = nla_nest_start_noflag(msg,
1715                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1716         if (!nl_tcp)
1717                 return -ENOBUFS;
1718
1719         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1720                         tcp->data_payload_max))
1721                 return -ENOBUFS;
1722
1723         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1724                         tcp->data_payload_max))
1725                 return -ENOBUFS;
1726
1727         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1728                 return -ENOBUFS;
1729
1730         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1731                                 sizeof(*tcp->tok), tcp->tok))
1732                 return -ENOBUFS;
1733
1734         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1735                         tcp->data_interval_max))
1736                 return -ENOBUFS;
1737
1738         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1739                         tcp->wake_payload_max))
1740                 return -ENOBUFS;
1741
1742         nla_nest_end(msg, nl_tcp);
1743         return 0;
1744 }
1745
1746 static int nl80211_send_wowlan(struct sk_buff *msg,
1747                                struct cfg80211_registered_device *rdev,
1748                                bool large)
1749 {
1750         struct nlattr *nl_wowlan;
1751
1752         if (!rdev->wiphy.wowlan)
1753                 return 0;
1754
1755         nl_wowlan = nla_nest_start_noflag(msg,
1756                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1757         if (!nl_wowlan)
1758                 return -ENOBUFS;
1759
1760         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1761              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1762             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1763              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1764             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1765              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1766             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1767              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1768             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1769              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1770             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1771              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1772             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1773              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1774             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1775              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1776                 return -ENOBUFS;
1777
1778         if (rdev->wiphy.wowlan->n_patterns) {
1779                 struct nl80211_pattern_support pat = {
1780                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1781                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1782                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1783                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1784                 };
1785
1786                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1787                             sizeof(pat), &pat))
1788                         return -ENOBUFS;
1789         }
1790
1791         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1792             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1793                         rdev->wiphy.wowlan->max_nd_match_sets))
1794                 return -ENOBUFS;
1795
1796         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1797                 return -ENOBUFS;
1798
1799         nla_nest_end(msg, nl_wowlan);
1800
1801         return 0;
1802 }
1803 #endif
1804
1805 static int nl80211_send_coalesce(struct sk_buff *msg,
1806                                  struct cfg80211_registered_device *rdev)
1807 {
1808         struct nl80211_coalesce_rule_support rule;
1809
1810         if (!rdev->wiphy.coalesce)
1811                 return 0;
1812
1813         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1814         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1815         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1816         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1817         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1818         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1819
1820         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1821                 return -ENOBUFS;
1822
1823         return 0;
1824 }
1825
1826 static int
1827 nl80211_send_iftype_data(struct sk_buff *msg,
1828                          const struct ieee80211_supported_band *sband,
1829                          const struct ieee80211_sband_iftype_data *iftdata)
1830 {
1831         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1832         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1833
1834         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1835                                 iftdata->types_mask))
1836                 return -ENOBUFS;
1837
1838         if (he_cap->has_he) {
1839                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1840                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1841                             he_cap->he_cap_elem.mac_cap_info) ||
1842                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1843                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1844                             he_cap->he_cap_elem.phy_cap_info) ||
1845                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1846                             sizeof(he_cap->he_mcs_nss_supp),
1847                             &he_cap->he_mcs_nss_supp) ||
1848                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1849                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1850                         return -ENOBUFS;
1851         }
1852
1853         if (eht_cap->has_eht && he_cap->has_he) {
1854                 u8 mcs_nss_size, ppe_thresh_size;
1855                 u16 ppe_thres_hdr;
1856                 bool is_ap;
1857
1858                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1859                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1860
1861                 mcs_nss_size =
1862                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1863                                                    &eht_cap->eht_cap_elem,
1864                                                    is_ap);
1865
1866                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1867                 ppe_thresh_size =
1868                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1869                                                eht_cap->eht_cap_elem.phy_cap_info);
1870
1871                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1872                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1873                             eht_cap->eht_cap_elem.mac_cap_info) ||
1874                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1875                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1876                             eht_cap->eht_cap_elem.phy_cap_info) ||
1877                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1878                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1879                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1880                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1881                         return -ENOBUFS;
1882         }
1883
1884         if (sband->band == NL80211_BAND_6GHZ &&
1885             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1886                     sizeof(iftdata->he_6ghz_capa),
1887                     &iftdata->he_6ghz_capa))
1888                 return -ENOBUFS;
1889
1890         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1891             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1892                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1893                 return -ENOBUFS;
1894
1895         return 0;
1896 }
1897
1898 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1899                                       struct ieee80211_supported_band *sband,
1900                                       bool large)
1901 {
1902         struct nlattr *nl_rates, *nl_rate;
1903         struct ieee80211_rate *rate;
1904         int i;
1905
1906         /* add HT info */
1907         if (sband->ht_cap.ht_supported &&
1908             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1909                      sizeof(sband->ht_cap.mcs),
1910                      &sband->ht_cap.mcs) ||
1911              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1912                          sband->ht_cap.cap) ||
1913              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1914                         sband->ht_cap.ampdu_factor) ||
1915              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1916                         sband->ht_cap.ampdu_density)))
1917                 return -ENOBUFS;
1918
1919         /* add VHT info */
1920         if (sband->vht_cap.vht_supported &&
1921             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1922                      sizeof(sband->vht_cap.vht_mcs),
1923                      &sband->vht_cap.vht_mcs) ||
1924              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1925                          sband->vht_cap.cap)))
1926                 return -ENOBUFS;
1927
1928         if (large && sband->n_iftype_data) {
1929                 struct nlattr *nl_iftype_data =
1930                         nla_nest_start_noflag(msg,
1931                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1932                 const struct ieee80211_sband_iftype_data *iftd;
1933                 int err;
1934
1935                 if (!nl_iftype_data)
1936                         return -ENOBUFS;
1937
1938                 for_each_sband_iftype_data(sband, i, iftd) {
1939                         struct nlattr *iftdata;
1940
1941                         iftdata = nla_nest_start_noflag(msg, i + 1);
1942                         if (!iftdata)
1943                                 return -ENOBUFS;
1944
1945                         err = nl80211_send_iftype_data(msg, sband, iftd);
1946                         if (err)
1947                                 return err;
1948
1949                         nla_nest_end(msg, iftdata);
1950                 }
1951
1952                 nla_nest_end(msg, nl_iftype_data);
1953         }
1954
1955         /* add EDMG info */
1956         if (large && sband->edmg_cap.channels &&
1957             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1958                        sband->edmg_cap.channels) ||
1959             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1960                        sband->edmg_cap.bw_config)))
1961
1962                 return -ENOBUFS;
1963
1964         /* add bitrates */
1965         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1966         if (!nl_rates)
1967                 return -ENOBUFS;
1968
1969         for (i = 0; i < sband->n_bitrates; i++) {
1970                 nl_rate = nla_nest_start_noflag(msg, i);
1971                 if (!nl_rate)
1972                         return -ENOBUFS;
1973
1974                 rate = &sband->bitrates[i];
1975                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1976                                 rate->bitrate))
1977                         return -ENOBUFS;
1978                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1979                     nla_put_flag(msg,
1980                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1981                         return -ENOBUFS;
1982
1983                 nla_nest_end(msg, nl_rate);
1984         }
1985
1986         nla_nest_end(msg, nl_rates);
1987
1988         /* S1G capabilities */
1989         if (sband->band == NL80211_BAND_S1GHZ && sband->s1g_cap.s1g &&
1990             (nla_put(msg, NL80211_BAND_ATTR_S1G_CAPA,
1991                      sizeof(sband->s1g_cap.cap),
1992                      sband->s1g_cap.cap) ||
1993              nla_put(msg, NL80211_BAND_ATTR_S1G_MCS_NSS_SET,
1994                      sizeof(sband->s1g_cap.nss_mcs),
1995                      sband->s1g_cap.nss_mcs)))
1996                 return -ENOBUFS;
1997
1998         return 0;
1999 }
2000
2001 static int
2002 nl80211_send_mgmt_stypes(struct sk_buff *msg,
2003                          const struct ieee80211_txrx_stypes *mgmt_stypes)
2004 {
2005         u16 stypes;
2006         struct nlattr *nl_ftypes, *nl_ifs;
2007         enum nl80211_iftype ift;
2008         int i;
2009
2010         if (!mgmt_stypes)
2011                 return 0;
2012
2013         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
2014         if (!nl_ifs)
2015                 return -ENOBUFS;
2016
2017         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2018                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2019                 if (!nl_ftypes)
2020                         return -ENOBUFS;
2021                 i = 0;
2022                 stypes = mgmt_stypes[ift].tx;
2023                 while (stypes) {
2024                         if ((stypes & 1) &&
2025                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2026                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2027                                 return -ENOBUFS;
2028                         stypes >>= 1;
2029                         i++;
2030                 }
2031                 nla_nest_end(msg, nl_ftypes);
2032         }
2033
2034         nla_nest_end(msg, nl_ifs);
2035
2036         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
2037         if (!nl_ifs)
2038                 return -ENOBUFS;
2039
2040         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
2041                 nl_ftypes = nla_nest_start_noflag(msg, ift);
2042                 if (!nl_ftypes)
2043                         return -ENOBUFS;
2044                 i = 0;
2045                 stypes = mgmt_stypes[ift].rx;
2046                 while (stypes) {
2047                         if ((stypes & 1) &&
2048                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2049                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2050                                 return -ENOBUFS;
2051                         stypes >>= 1;
2052                         i++;
2053                 }
2054                 nla_nest_end(msg, nl_ftypes);
2055         }
2056         nla_nest_end(msg, nl_ifs);
2057
2058         return 0;
2059 }
2060
2061 #define CMD(op, n)                                                      \
2062          do {                                                           \
2063                 if (rdev->ops->op) {                                    \
2064                         i++;                                            \
2065                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2066                                 goto nla_put_failure;                   \
2067                 }                                                       \
2068         } while (0)
2069
2070 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2071                                         struct sk_buff *msg)
2072 {
2073         int i = 0;
2074
2075         /*
2076          * do *NOT* add anything into this function, new things need to be
2077          * advertised only to new versions of userspace that can deal with
2078          * the split (and they can't possibly care about new features...
2079          */
2080         CMD(add_virtual_intf, NEW_INTERFACE);
2081         CMD(change_virtual_intf, SET_INTERFACE);
2082         CMD(add_key, NEW_KEY);
2083         CMD(start_ap, START_AP);
2084         CMD(add_station, NEW_STATION);
2085         CMD(add_mpath, NEW_MPATH);
2086         CMD(update_mesh_config, SET_MESH_CONFIG);
2087         CMD(change_bss, SET_BSS);
2088         CMD(auth, AUTHENTICATE);
2089         CMD(assoc, ASSOCIATE);
2090         CMD(deauth, DEAUTHENTICATE);
2091         CMD(disassoc, DISASSOCIATE);
2092         CMD(join_ibss, JOIN_IBSS);
2093         CMD(join_mesh, JOIN_MESH);
2094         CMD(set_pmksa, SET_PMKSA);
2095         CMD(del_pmksa, DEL_PMKSA);
2096         CMD(flush_pmksa, FLUSH_PMKSA);
2097         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2098                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2099         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2100         CMD(mgmt_tx, FRAME);
2101         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2102         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2103                 i++;
2104                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2105                         goto nla_put_failure;
2106         }
2107         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2108             rdev->ops->join_mesh) {
2109                 i++;
2110                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2111                         goto nla_put_failure;
2112         }
2113         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2114                 CMD(tdls_mgmt, TDLS_MGMT);
2115                 CMD(tdls_oper, TDLS_OPER);
2116         }
2117         if (rdev->wiphy.max_sched_scan_reqs)
2118                 CMD(sched_scan_start, START_SCHED_SCAN);
2119         CMD(probe_client, PROBE_CLIENT);
2120         CMD(set_noack_map, SET_NOACK_MAP);
2121         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2122                 i++;
2123                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2124                         goto nla_put_failure;
2125         }
2126         CMD(start_p2p_device, START_P2P_DEVICE);
2127         CMD(set_mcast_rate, SET_MCAST_RATE);
2128 #ifdef CONFIG_NL80211_TESTMODE
2129         CMD(testmode_cmd, TESTMODE);
2130 #endif
2131
2132         if (rdev->ops->connect || rdev->ops->auth) {
2133                 i++;
2134                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2135                         goto nla_put_failure;
2136         }
2137
2138         if (rdev->ops->disconnect || rdev->ops->deauth) {
2139                 i++;
2140                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2141                         goto nla_put_failure;
2142         }
2143
2144         return i;
2145  nla_put_failure:
2146         return -ENOBUFS;
2147 }
2148
2149 static int
2150 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2151                            struct sk_buff *msg)
2152 {
2153         struct nlattr *ftm;
2154
2155         if (!cap->ftm.supported)
2156                 return 0;
2157
2158         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2159         if (!ftm)
2160                 return -ENOBUFS;
2161
2162         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2163                 return -ENOBUFS;
2164         if (cap->ftm.non_asap &&
2165             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2166                 return -ENOBUFS;
2167         if (cap->ftm.request_lci &&
2168             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2169                 return -ENOBUFS;
2170         if (cap->ftm.request_civicloc &&
2171             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2172                 return -ENOBUFS;
2173         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2174                         cap->ftm.preambles))
2175                 return -ENOBUFS;
2176         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2177                         cap->ftm.bandwidths))
2178                 return -ENOBUFS;
2179         if (cap->ftm.max_bursts_exponent >= 0 &&
2180             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2181                         cap->ftm.max_bursts_exponent))
2182                 return -ENOBUFS;
2183         if (cap->ftm.max_ftms_per_burst &&
2184             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2185                         cap->ftm.max_ftms_per_burst))
2186                 return -ENOBUFS;
2187         if (cap->ftm.trigger_based &&
2188             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2189                 return -ENOBUFS;
2190         if (cap->ftm.non_trigger_based &&
2191             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2192                 return -ENOBUFS;
2193
2194         nla_nest_end(msg, ftm);
2195         return 0;
2196 }
2197
2198 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2199                                   struct sk_buff *msg)
2200 {
2201         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2202         struct nlattr *pmsr, *caps;
2203
2204         if (!cap)
2205                 return 0;
2206
2207         /*
2208          * we don't need to clean up anything here since the caller
2209          * will genlmsg_cancel() if we fail
2210          */
2211
2212         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2213         if (!pmsr)
2214                 return -ENOBUFS;
2215
2216         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2217                 return -ENOBUFS;
2218
2219         if (cap->report_ap_tsf &&
2220             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2221                 return -ENOBUFS;
2222
2223         if (cap->randomize_mac_addr &&
2224             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2225                 return -ENOBUFS;
2226
2227         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2228         if (!caps)
2229                 return -ENOBUFS;
2230
2231         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2232                 return -ENOBUFS;
2233
2234         nla_nest_end(msg, caps);
2235         nla_nest_end(msg, pmsr);
2236
2237         return 0;
2238 }
2239
2240 static int
2241 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2242                               struct sk_buff *msg)
2243 {
2244         int i;
2245         struct nlattr *nested, *nested_akms;
2246         const struct wiphy_iftype_akm_suites *iftype_akms;
2247
2248         if (!rdev->wiphy.num_iftype_akm_suites ||
2249             !rdev->wiphy.iftype_akm_suites)
2250                 return 0;
2251
2252         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2253         if (!nested)
2254                 return -ENOBUFS;
2255
2256         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2257                 nested_akms = nla_nest_start(msg, i + 1);
2258                 if (!nested_akms)
2259                         return -ENOBUFS;
2260
2261                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2262
2263                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2264                                         iftype_akms->iftypes_mask))
2265                         return -ENOBUFS;
2266
2267                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2268                             sizeof(u32) * iftype_akms->n_akm_suites,
2269                             iftype_akms->akm_suites)) {
2270                         return -ENOBUFS;
2271                 }
2272                 nla_nest_end(msg, nested_akms);
2273         }
2274
2275         nla_nest_end(msg, nested);
2276
2277         return 0;
2278 }
2279
2280 static int
2281 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2282                                struct sk_buff *msg)
2283 {
2284         struct nlattr *supp;
2285
2286         if (!rdev->wiphy.tid_config_support.vif &&
2287             !rdev->wiphy.tid_config_support.peer)
2288                 return 0;
2289
2290         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2291         if (!supp)
2292                 return -ENOSPC;
2293
2294         if (rdev->wiphy.tid_config_support.vif &&
2295             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2296                               rdev->wiphy.tid_config_support.vif,
2297                               NL80211_TID_CONFIG_ATTR_PAD))
2298                 goto fail;
2299
2300         if (rdev->wiphy.tid_config_support.peer &&
2301             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2302                               rdev->wiphy.tid_config_support.peer,
2303                               NL80211_TID_CONFIG_ATTR_PAD))
2304                 goto fail;
2305
2306         /* for now we just use the same value ... makes more sense */
2307         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2308                        rdev->wiphy.tid_config_support.max_retry))
2309                 goto fail;
2310         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2311                        rdev->wiphy.tid_config_support.max_retry))
2312                 goto fail;
2313
2314         nla_nest_end(msg, supp);
2315
2316         return 0;
2317 fail:
2318         nla_nest_cancel(msg, supp);
2319         return -ENOBUFS;
2320 }
2321
2322 static int
2323 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2324                       struct sk_buff *msg)
2325 {
2326         struct nlattr *sar_capa, *specs, *sub_freq_range;
2327         u8 num_freq_ranges;
2328         int i;
2329
2330         if (!rdev->wiphy.sar_capa)
2331                 return 0;
2332
2333         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2334
2335         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2336         if (!sar_capa)
2337                 return -ENOSPC;
2338
2339         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2340                 goto fail;
2341
2342         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2343         if (!specs)
2344                 goto fail;
2345
2346         /* report supported freq_ranges */
2347         for (i = 0; i < num_freq_ranges; i++) {
2348                 sub_freq_range = nla_nest_start(msg, i + 1);
2349                 if (!sub_freq_range)
2350                         goto fail;
2351
2352                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2353                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2354                         goto fail;
2355
2356                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2357                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2358                         goto fail;
2359
2360                 nla_nest_end(msg, sub_freq_range);
2361         }
2362
2363         nla_nest_end(msg, specs);
2364         nla_nest_end(msg, sar_capa);
2365
2366         return 0;
2367 fail:
2368         nla_nest_cancel(msg, sar_capa);
2369         return -ENOBUFS;
2370 }
2371
2372 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2373 {
2374         struct nlattr *config;
2375
2376         if (!wiphy->mbssid_max_interfaces)
2377                 return 0;
2378
2379         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2380         if (!config)
2381                 return -ENOBUFS;
2382
2383         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2384                        wiphy->mbssid_max_interfaces))
2385                 goto fail;
2386
2387         if (wiphy->ema_max_profile_periodicity &&
2388             nla_put_u8(msg,
2389                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2390                        wiphy->ema_max_profile_periodicity))
2391                 goto fail;
2392
2393         nla_nest_end(msg, config);
2394         return 0;
2395
2396 fail:
2397         nla_nest_cancel(msg, config);
2398         return -ENOBUFS;
2399 }
2400
2401 struct nl80211_dump_wiphy_state {
2402         s64 filter_wiphy;
2403         long start;
2404         long split_start, band_start, chan_start, capa_start;
2405         bool split;
2406 };
2407
2408 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2409                               enum nl80211_commands cmd,
2410                               struct sk_buff *msg, u32 portid, u32 seq,
2411                               int flags, struct nl80211_dump_wiphy_state *state)
2412 {
2413         void *hdr;
2414         struct nlattr *nl_bands, *nl_band;
2415         struct nlattr *nl_freqs, *nl_freq;
2416         struct nlattr *nl_cmds;
2417         enum nl80211_band band;
2418         struct ieee80211_channel *chan;
2419         int i;
2420         const struct ieee80211_txrx_stypes *mgmt_stypes =
2421                                 rdev->wiphy.mgmt_stypes;
2422         u32 features;
2423
2424         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2425         if (!hdr)
2426                 return -ENOBUFS;
2427
2428         if (WARN_ON(!state))
2429                 return -EINVAL;
2430
2431         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2432             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2433                            wiphy_name(&rdev->wiphy)) ||
2434             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2435                         cfg80211_rdev_list_generation))
2436                 goto nla_put_failure;
2437
2438         if (cmd != NL80211_CMD_NEW_WIPHY)
2439                 goto finish;
2440
2441         switch (state->split_start) {
2442         case 0:
2443                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2444                                rdev->wiphy.retry_short) ||
2445                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2446                                rdev->wiphy.retry_long) ||
2447                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2448                                 rdev->wiphy.frag_threshold) ||
2449                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2450                                 rdev->wiphy.rts_threshold) ||
2451                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2452                                rdev->wiphy.coverage_class) ||
2453                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2454                                rdev->wiphy.max_scan_ssids) ||
2455                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2456                                rdev->wiphy.max_sched_scan_ssids) ||
2457                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2458                                 rdev->wiphy.max_scan_ie_len) ||
2459                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2460                                 rdev->wiphy.max_sched_scan_ie_len) ||
2461                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2462                                rdev->wiphy.max_match_sets))
2463                         goto nla_put_failure;
2464
2465                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2466                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2467                         goto nla_put_failure;
2468                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2469                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2470                         goto nla_put_failure;
2471                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2472                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2473                         goto nla_put_failure;
2474                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2475                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2476                         goto nla_put_failure;
2477                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2478                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2479                         goto nla_put_failure;
2480                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2481                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2482                         goto nla_put_failure;
2483                 state->split_start++;
2484                 if (state->split)
2485                         break;
2486                 fallthrough;
2487         case 1:
2488                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2489                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2490                             rdev->wiphy.cipher_suites))
2491                         goto nla_put_failure;
2492
2493                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2494                                rdev->wiphy.max_num_pmkids))
2495                         goto nla_put_failure;
2496
2497                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2498                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2499                         goto nla_put_failure;
2500
2501                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2502                                 rdev->wiphy.available_antennas_tx) ||
2503                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2504                                 rdev->wiphy.available_antennas_rx))
2505                         goto nla_put_failure;
2506
2507                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2508                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2509                                 rdev->wiphy.probe_resp_offload))
2510                         goto nla_put_failure;
2511
2512                 if ((rdev->wiphy.available_antennas_tx ||
2513                      rdev->wiphy.available_antennas_rx) &&
2514                     rdev->ops->get_antenna) {
2515                         u32 tx_ant = 0, rx_ant = 0;
2516                         int res;
2517
2518                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2519                         if (!res) {
2520                                 if (nla_put_u32(msg,
2521                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2522                                                 tx_ant) ||
2523                                     nla_put_u32(msg,
2524                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2525                                                 rx_ant))
2526                                         goto nla_put_failure;
2527                         }
2528                 }
2529
2530                 state->split_start++;
2531                 if (state->split)
2532                         break;
2533                 fallthrough;
2534         case 2:
2535                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2536                                         rdev->wiphy.interface_modes))
2537                                 goto nla_put_failure;
2538                 state->split_start++;
2539                 if (state->split)
2540                         break;
2541                 fallthrough;
2542         case 3:
2543                 nl_bands = nla_nest_start_noflag(msg,
2544                                                  NL80211_ATTR_WIPHY_BANDS);
2545                 if (!nl_bands)
2546                         goto nla_put_failure;
2547
2548                 for (band = state->band_start;
2549                      band < (state->split ?
2550                                 NUM_NL80211_BANDS :
2551                                 NL80211_BAND_60GHZ + 1);
2552                      band++) {
2553                         struct ieee80211_supported_band *sband;
2554
2555                         /* omit higher bands for ancient software */
2556                         if (band > NL80211_BAND_5GHZ && !state->split)
2557                                 break;
2558
2559                         sband = rdev->wiphy.bands[band];
2560
2561                         if (!sband)
2562                                 continue;
2563
2564                         nl_band = nla_nest_start_noflag(msg, band);
2565                         if (!nl_band)
2566                                 goto nla_put_failure;
2567
2568                         switch (state->chan_start) {
2569                         case 0:
2570                                 if (nl80211_send_band_rateinfo(msg, sband,
2571                                                                state->split))
2572                                         goto nla_put_failure;
2573                                 state->chan_start++;
2574                                 if (state->split)
2575                                         break;
2576                                 fallthrough;
2577                         default:
2578                                 /* add frequencies */
2579                                 nl_freqs = nla_nest_start_noflag(msg,
2580                                                                  NL80211_BAND_ATTR_FREQS);
2581                                 if (!nl_freqs)
2582                                         goto nla_put_failure;
2583
2584                                 for (i = state->chan_start - 1;
2585                                      i < sband->n_channels;
2586                                      i++) {
2587                                         nl_freq = nla_nest_start_noflag(msg,
2588                                                                         i);
2589                                         if (!nl_freq)
2590                                                 goto nla_put_failure;
2591
2592                                         chan = &sband->channels[i];
2593
2594                                         if (nl80211_msg_put_channel(
2595                                                         msg, &rdev->wiphy, chan,
2596                                                         state->split))
2597                                                 goto nla_put_failure;
2598
2599                                         nla_nest_end(msg, nl_freq);
2600                                         if (state->split)
2601                                                 break;
2602                                 }
2603                                 if (i < sband->n_channels)
2604                                         state->chan_start = i + 2;
2605                                 else
2606                                         state->chan_start = 0;
2607                                 nla_nest_end(msg, nl_freqs);
2608                         }
2609
2610                         nla_nest_end(msg, nl_band);
2611
2612                         if (state->split) {
2613                                 /* start again here */
2614                                 if (state->chan_start)
2615                                         band--;
2616                                 break;
2617                         }
2618                 }
2619                 nla_nest_end(msg, nl_bands);
2620
2621                 if (band < NUM_NL80211_BANDS)
2622                         state->band_start = band + 1;
2623                 else
2624                         state->band_start = 0;
2625
2626                 /* if bands & channels are done, continue outside */
2627                 if (state->band_start == 0 && state->chan_start == 0)
2628                         state->split_start++;
2629                 if (state->split)
2630                         break;
2631                 fallthrough;
2632         case 4:
2633                 nl_cmds = nla_nest_start_noflag(msg,
2634                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2635                 if (!nl_cmds)
2636                         goto nla_put_failure;
2637
2638                 i = nl80211_add_commands_unsplit(rdev, msg);
2639                 if (i < 0)
2640                         goto nla_put_failure;
2641                 if (state->split) {
2642                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2643                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2644                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2645                                 CMD(channel_switch, CHANNEL_SWITCH);
2646                         CMD(set_qos_map, SET_QOS_MAP);
2647                         if (rdev->wiphy.features &
2648                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2649                                 CMD(add_tx_ts, ADD_TX_TS);
2650                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2651                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2652                         CMD(update_ft_ies, UPDATE_FT_IES);
2653                         if (rdev->wiphy.sar_capa)
2654                                 CMD(set_sar_specs, SET_SAR_SPECS);
2655                 }
2656 #undef CMD
2657
2658                 nla_nest_end(msg, nl_cmds);
2659                 state->split_start++;
2660                 if (state->split)
2661                         break;
2662                 fallthrough;
2663         case 5:
2664                 if (rdev->ops->remain_on_channel &&
2665                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2666                     nla_put_u32(msg,
2667                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2668                                 rdev->wiphy.max_remain_on_channel_duration))
2669                         goto nla_put_failure;
2670
2671                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2672                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2673                         goto nla_put_failure;
2674
2675                 state->split_start++;
2676                 if (state->split)
2677                         break;
2678                 fallthrough;
2679         case 6:
2680 #ifdef CONFIG_PM
2681                 if (nl80211_send_wowlan(msg, rdev, state->split))
2682                         goto nla_put_failure;
2683                 state->split_start++;
2684                 if (state->split)
2685                         break;
2686 #else
2687                 state->split_start++;
2688 #endif
2689                 fallthrough;
2690         case 7:
2691                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2692                                         rdev->wiphy.software_iftypes))
2693                         goto nla_put_failure;
2694
2695                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2696                                                    state->split))
2697                         goto nla_put_failure;
2698
2699                 state->split_start++;
2700                 if (state->split)
2701                         break;
2702                 fallthrough;
2703         case 8:
2704                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2705                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2706                                 rdev->wiphy.ap_sme_capa))
2707                         goto nla_put_failure;
2708
2709                 features = rdev->wiphy.features;
2710                 /*
2711                  * We can only add the per-channel limit information if the
2712                  * dump is split, otherwise it makes it too big. Therefore
2713                  * only advertise it in that case.
2714                  */
2715                 if (state->split)
2716                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2717                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2718                         goto nla_put_failure;
2719
2720                 if (rdev->wiphy.ht_capa_mod_mask &&
2721                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2722                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2723                             rdev->wiphy.ht_capa_mod_mask))
2724                         goto nla_put_failure;
2725
2726                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2727                     rdev->wiphy.max_acl_mac_addrs &&
2728                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2729                                 rdev->wiphy.max_acl_mac_addrs))
2730                         goto nla_put_failure;
2731
2732                 /*
2733                  * Any information below this point is only available to
2734                  * applications that can deal with it being split. This
2735                  * helps ensure that newly added capabilities don't break
2736                  * older tools by overrunning their buffers.
2737                  *
2738                  * We still increment split_start so that in the split
2739                  * case we'll continue with more data in the next round,
2740                  * but break unconditionally so unsplit data stops here.
2741                  */
2742                 if (state->split)
2743                         state->split_start++;
2744                 else
2745                         state->split_start = 0;
2746                 break;
2747         case 9:
2748                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2749                         goto nla_put_failure;
2750
2751                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2752                                 rdev->wiphy.max_sched_scan_plans) ||
2753                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2754                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2755                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2756                                 rdev->wiphy.max_sched_scan_plan_iterations))
2757                         goto nla_put_failure;
2758
2759                 if (rdev->wiphy.extended_capabilities &&
2760                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2761                              rdev->wiphy.extended_capabilities_len,
2762                              rdev->wiphy.extended_capabilities) ||
2763                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2764                              rdev->wiphy.extended_capabilities_len,
2765                              rdev->wiphy.extended_capabilities_mask)))
2766                         goto nla_put_failure;
2767
2768                 if (rdev->wiphy.vht_capa_mod_mask &&
2769                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2770                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2771                             rdev->wiphy.vht_capa_mod_mask))
2772                         goto nla_put_failure;
2773
2774                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2775                             rdev->wiphy.perm_addr))
2776                         goto nla_put_failure;
2777
2778                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2779                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2780                             rdev->wiphy.addr_mask))
2781                         goto nla_put_failure;
2782
2783                 if (rdev->wiphy.n_addresses > 1) {
2784                         void *attr;
2785
2786                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2787                         if (!attr)
2788                                 goto nla_put_failure;
2789
2790                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2791                                 if (nla_put(msg, i + 1, ETH_ALEN,
2792                                             rdev->wiphy.addresses[i].addr))
2793                                         goto nla_put_failure;
2794
2795                         nla_nest_end(msg, attr);
2796                 }
2797
2798                 state->split_start++;
2799                 break;
2800         case 10:
2801                 if (nl80211_send_coalesce(msg, rdev))
2802                         goto nla_put_failure;
2803
2804                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2805                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2806                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2807                         goto nla_put_failure;
2808
2809                 if (rdev->wiphy.max_ap_assoc_sta &&
2810                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2811                                 rdev->wiphy.max_ap_assoc_sta))
2812                         goto nla_put_failure;
2813
2814                 state->split_start++;
2815                 break;
2816         case 11:
2817                 if (rdev->wiphy.n_vendor_commands) {
2818                         const struct nl80211_vendor_cmd_info *info;
2819                         struct nlattr *nested;
2820
2821                         nested = nla_nest_start_noflag(msg,
2822                                                        NL80211_ATTR_VENDOR_DATA);
2823                         if (!nested)
2824                                 goto nla_put_failure;
2825
2826                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2827                                 info = &rdev->wiphy.vendor_commands[i].info;
2828                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2829                                         goto nla_put_failure;
2830                         }
2831                         nla_nest_end(msg, nested);
2832                 }
2833
2834                 if (rdev->wiphy.n_vendor_events) {
2835                         const struct nl80211_vendor_cmd_info *info;
2836                         struct nlattr *nested;
2837
2838                         nested = nla_nest_start_noflag(msg,
2839                                                        NL80211_ATTR_VENDOR_EVENTS);
2840                         if (!nested)
2841                                 goto nla_put_failure;
2842
2843                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2844                                 info = &rdev->wiphy.vendor_events[i];
2845                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2846                                         goto nla_put_failure;
2847                         }
2848                         nla_nest_end(msg, nested);
2849                 }
2850                 state->split_start++;
2851                 break;
2852         case 12:
2853                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2854                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2855                                rdev->wiphy.max_num_csa_counters))
2856                         goto nla_put_failure;
2857
2858                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2859                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2860                         goto nla_put_failure;
2861
2862                 if (rdev->wiphy.max_sched_scan_reqs &&
2863                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2864                                 rdev->wiphy.max_sched_scan_reqs))
2865                         goto nla_put_failure;
2866
2867                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2868                             sizeof(rdev->wiphy.ext_features),
2869                             rdev->wiphy.ext_features))
2870                         goto nla_put_failure;
2871
2872                 if (rdev->wiphy.bss_select_support) {
2873                         struct nlattr *nested;
2874                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2875
2876                         nested = nla_nest_start_noflag(msg,
2877                                                        NL80211_ATTR_BSS_SELECT);
2878                         if (!nested)
2879                                 goto nla_put_failure;
2880
2881                         i = 0;
2882                         while (bss_select_support) {
2883                                 if ((bss_select_support & 1) &&
2884                                     nla_put_flag(msg, i))
2885                                         goto nla_put_failure;
2886                                 i++;
2887                                 bss_select_support >>= 1;
2888                         }
2889                         nla_nest_end(msg, nested);
2890                 }
2891
2892                 state->split_start++;
2893                 break;
2894         case 13:
2895                 if (rdev->wiphy.num_iftype_ext_capab &&
2896                     rdev->wiphy.iftype_ext_capab) {
2897                         struct nlattr *nested_ext_capab, *nested;
2898
2899                         nested = nla_nest_start_noflag(msg,
2900                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2901                         if (!nested)
2902                                 goto nla_put_failure;
2903
2904                         for (i = state->capa_start;
2905                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2906                                 const struct wiphy_iftype_ext_capab *capab;
2907
2908                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2909
2910                                 nested_ext_capab = nla_nest_start_noflag(msg,
2911                                                                          i);
2912                                 if (!nested_ext_capab ||
2913                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2914                                                 capab->iftype) ||
2915                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2916                                             capab->extended_capabilities_len,
2917                                             capab->extended_capabilities) ||
2918                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2919                                             capab->extended_capabilities_len,
2920                                             capab->extended_capabilities_mask))
2921                                         goto nla_put_failure;
2922
2923                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2924                                     (nla_put_u16(msg,
2925                                                  NL80211_ATTR_EML_CAPABILITY,
2926                                                  capab->eml_capabilities) ||
2927                                      nla_put_u16(msg,
2928                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2929                                                  capab->mld_capa_and_ops)))
2930                                         goto nla_put_failure;
2931
2932                                 nla_nest_end(msg, nested_ext_capab);
2933                                 if (state->split)
2934                                         break;
2935                         }
2936                         nla_nest_end(msg, nested);
2937                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2938                                 state->capa_start = i + 1;
2939                                 break;
2940                         }
2941                 }
2942
2943                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2944                                 rdev->wiphy.nan_supported_bands))
2945                         goto nla_put_failure;
2946
2947                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2948                                             NL80211_EXT_FEATURE_TXQS)) {
2949                         struct cfg80211_txq_stats txqstats = {};
2950                         int res;
2951
2952                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2953                         if (!res &&
2954                             !nl80211_put_txq_stats(msg, &txqstats,
2955                                                    NL80211_ATTR_TXQ_STATS))
2956                                 goto nla_put_failure;
2957
2958                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2959                                         rdev->wiphy.txq_limit))
2960                                 goto nla_put_failure;
2961                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2962                                         rdev->wiphy.txq_memory_limit))
2963                                 goto nla_put_failure;
2964                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2965                                         rdev->wiphy.txq_quantum))
2966                                 goto nla_put_failure;
2967                 }
2968
2969                 state->split_start++;
2970                 break;
2971         case 14:
2972                 if (nl80211_send_pmsr_capa(rdev, msg))
2973                         goto nla_put_failure;
2974
2975                 state->split_start++;
2976                 break;
2977         case 15:
2978                 if (rdev->wiphy.akm_suites &&
2979                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2980                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2981                             rdev->wiphy.akm_suites))
2982                         goto nla_put_failure;
2983
2984                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2985                         goto nla_put_failure;
2986
2987                 if (nl80211_put_tid_config_support(rdev, msg))
2988                         goto nla_put_failure;
2989                 state->split_start++;
2990                 break;
2991         case 16:
2992                 if (nl80211_put_sar_specs(rdev, msg))
2993                         goto nla_put_failure;
2994
2995                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2996                         goto nla_put_failure;
2997
2998                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2999                                 rdev->wiphy.max_num_akm_suites))
3000                         goto nla_put_failure;
3001
3002                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
3003                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
3004
3005                 if (rdev->wiphy.hw_timestamp_max_peers &&
3006                     nla_put_u16(msg, NL80211_ATTR_MAX_HW_TIMESTAMP_PEERS,
3007                                 rdev->wiphy.hw_timestamp_max_peers))
3008                         goto nla_put_failure;
3009
3010                 /* done */
3011                 state->split_start = 0;
3012                 break;
3013         }
3014  finish:
3015         genlmsg_end(msg, hdr);
3016         return 0;
3017
3018  nla_put_failure:
3019         genlmsg_cancel(msg, hdr);
3020         return -EMSGSIZE;
3021 }
3022
3023 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
3024                                     struct netlink_callback *cb,
3025                                     struct nl80211_dump_wiphy_state *state)
3026 {
3027         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
3028         int ret;
3029
3030         if (!tb)
3031                 return -ENOMEM;
3032
3033         ret = nlmsg_parse_deprecated(cb->nlh,
3034                                      GENL_HDRLEN + nl80211_fam.hdrsize,
3035                                      tb, nl80211_fam.maxattr,
3036                                      nl80211_policy, NULL);
3037         /* ignore parse errors for backward compatibility */
3038         if (ret) {
3039                 ret = 0;
3040                 goto out;
3041         }
3042
3043         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
3044         if (tb[NL80211_ATTR_WIPHY])
3045                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
3046         if (tb[NL80211_ATTR_WDEV])
3047                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3048         if (tb[NL80211_ATTR_IFINDEX]) {
3049                 struct net_device *netdev;
3050                 struct cfg80211_registered_device *rdev;
3051                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3052
3053                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3054                 if (!netdev) {
3055                         ret = -ENODEV;
3056                         goto out;
3057                 }
3058                 if (netdev->ieee80211_ptr) {
3059                         rdev = wiphy_to_rdev(
3060                                 netdev->ieee80211_ptr->wiphy);
3061                         state->filter_wiphy = rdev->wiphy_idx;
3062                 }
3063         }
3064
3065         ret = 0;
3066 out:
3067         kfree(tb);
3068         return ret;
3069 }
3070
3071 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3072 {
3073         int idx = 0, ret;
3074         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3075         struct cfg80211_registered_device *rdev;
3076
3077         rtnl_lock();
3078         if (!state) {
3079                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3080                 if (!state) {
3081                         rtnl_unlock();
3082                         return -ENOMEM;
3083                 }
3084                 state->filter_wiphy = -1;
3085                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3086                 if (ret) {
3087                         kfree(state);
3088                         rtnl_unlock();
3089                         return ret;
3090                 }
3091                 cb->args[0] = (long)state;
3092         }
3093
3094         for_each_rdev(rdev) {
3095                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3096                         continue;
3097                 if (++idx <= state->start)
3098                         continue;
3099                 if (state->filter_wiphy != -1 &&
3100                     state->filter_wiphy != rdev->wiphy_idx)
3101                         continue;
3102                 wiphy_lock(&rdev->wiphy);
3103                 /* attempt to fit multiple wiphy data chunks into the skb */
3104                 do {
3105                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3106                                                  skb,
3107                                                  NETLINK_CB(cb->skb).portid,
3108                                                  cb->nlh->nlmsg_seq,
3109                                                  NLM_F_MULTI, state);
3110                         if (ret < 0) {
3111                                 /*
3112                                  * If sending the wiphy data didn't fit (ENOBUFS
3113                                  * or EMSGSIZE returned), this SKB is still
3114                                  * empty (so it's not too big because another
3115                                  * wiphy dataset is already in the skb) and
3116                                  * we've not tried to adjust the dump allocation
3117                                  * yet ... then adjust the alloc size to be
3118                                  * bigger, and return 1 but with the empty skb.
3119                                  * This results in an empty message being RX'ed
3120                                  * in userspace, but that is ignored.
3121                                  *
3122                                  * We can then retry with the larger buffer.
3123                                  */
3124                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3125                                     !skb->len && !state->split &&
3126                                     cb->min_dump_alloc < 4096) {
3127                                         cb->min_dump_alloc = 4096;
3128                                         state->split_start = 0;
3129                                         wiphy_unlock(&rdev->wiphy);
3130                                         rtnl_unlock();
3131                                         return 1;
3132                                 }
3133                                 idx--;
3134                                 break;
3135                         }
3136                 } while (state->split_start > 0);
3137                 wiphy_unlock(&rdev->wiphy);
3138                 break;
3139         }
3140         rtnl_unlock();
3141
3142         state->start = idx;
3143
3144         return skb->len;
3145 }
3146
3147 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3148 {
3149         kfree((void *)cb->args[0]);
3150         return 0;
3151 }
3152
3153 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3154 {
3155         struct sk_buff *msg;
3156         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3157         struct nl80211_dump_wiphy_state state = {};
3158
3159         msg = nlmsg_new(4096, GFP_KERNEL);
3160         if (!msg)
3161                 return -ENOMEM;
3162
3163         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3164                                info->snd_portid, info->snd_seq, 0,
3165                                &state) < 0) {
3166                 nlmsg_free(msg);
3167                 return -ENOBUFS;
3168         }
3169
3170         return genlmsg_reply(msg, info);
3171 }
3172
3173 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3174         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3175         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3176         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3177         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3178         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3179 };
3180
3181 static int parse_txq_params(struct nlattr *tb[],
3182                             struct ieee80211_txq_params *txq_params)
3183 {
3184         u8 ac;
3185
3186         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3187             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3188             !tb[NL80211_TXQ_ATTR_AIFS])
3189                 return -EINVAL;
3190
3191         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3192         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3193         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3194         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3195         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3196
3197         if (ac >= NL80211_NUM_ACS)
3198                 return -EINVAL;
3199         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3200         return 0;
3201 }
3202
3203 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3204 {
3205         /*
3206          * You can only set the channel explicitly for some interfaces,
3207          * most have their channel managed via their respective
3208          * "establish a connection" command (connect, join, ...)
3209          *
3210          * For AP/GO and mesh mode, the channel can be set with the
3211          * channel userspace API, but is only stored and passed to the
3212          * low-level driver when the AP starts or the mesh is joined.
3213          * This is for backward compatibility, userspace can also give
3214          * the channel in the start-ap or join-mesh commands instead.
3215          *
3216          * Monitors are special as they are normally slaved to
3217          * whatever else is going on, so they have their own special
3218          * operation to set the monitor channel if possible.
3219          */
3220         return !wdev ||
3221                 wdev->iftype == NL80211_IFTYPE_AP ||
3222                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3223                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3224                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3225 }
3226
3227 static int nl80211_parse_punct_bitmap(struct cfg80211_registered_device *rdev,
3228                                       struct genl_info *info,
3229                                       const struct cfg80211_chan_def *chandef,
3230                                       u16 *punct_bitmap)
3231 {
3232         if (!wiphy_ext_feature_isset(&rdev->wiphy, NL80211_EXT_FEATURE_PUNCT))
3233                 return -EINVAL;
3234
3235         *punct_bitmap = nla_get_u32(info->attrs[NL80211_ATTR_PUNCT_BITMAP]);
3236         if (!cfg80211_valid_disable_subchannel_bitmap(punct_bitmap, chandef))
3237                 return -EINVAL;
3238
3239         return 0;
3240 }
3241
3242 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3243                           struct genl_info *info,
3244                           struct cfg80211_chan_def *chandef)
3245 {
3246         struct netlink_ext_ack *extack = info->extack;
3247         struct nlattr **attrs = info->attrs;
3248         u32 control_freq;
3249
3250         if (!attrs[NL80211_ATTR_WIPHY_FREQ]) {
3251                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3252                                     "Frequency is missing");
3253                 return -EINVAL;
3254         }
3255
3256         control_freq = MHZ_TO_KHZ(
3257                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3258         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3259                 control_freq +=
3260                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3261
3262         memset(chandef, 0, sizeof(*chandef));
3263         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3264         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3265         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3266         chandef->freq1_offset = control_freq % 1000;
3267         chandef->center_freq2 = 0;
3268
3269         /* Primary channel not allowed */
3270         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3271                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3272                                     "Channel is disabled");
3273                 return -EINVAL;
3274         }
3275
3276         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3277                 enum nl80211_channel_type chantype;
3278
3279                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3280
3281                 switch (chantype) {
3282                 case NL80211_CHAN_NO_HT:
3283                 case NL80211_CHAN_HT20:
3284                 case NL80211_CHAN_HT40PLUS:
3285                 case NL80211_CHAN_HT40MINUS:
3286                         cfg80211_chandef_create(chandef, chandef->chan,
3287                                                 chantype);
3288                         /* user input for center_freq is incorrect */
3289                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3290                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3291                                 NL_SET_ERR_MSG_ATTR(extack,
3292                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3293                                                     "bad center frequency 1");
3294                                 return -EINVAL;
3295                         }
3296                         /* center_freq2 must be zero */
3297                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3298                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3299                                 NL_SET_ERR_MSG_ATTR(extack,
3300                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3301                                                     "center frequency 2 can't be used");
3302                                 return -EINVAL;
3303                         }
3304                         break;
3305                 default:
3306                         NL_SET_ERR_MSG_ATTR(extack,
3307                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3308                                             "invalid channel type");
3309                         return -EINVAL;
3310                 }
3311         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3312                 chandef->width =
3313                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3314                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3315                         /* User input error for channel width doesn't match channel  */
3316                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3317                                 NL_SET_ERR_MSG_ATTR(extack,
3318                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3319                                                     "bad channel width");
3320                                 return -EINVAL;
3321                         }
3322                 }
3323                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3324                         chandef->center_freq1 =
3325                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3326                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3327                                 chandef->freq1_offset = nla_get_u32(
3328                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3329                         else
3330                                 chandef->freq1_offset = 0;
3331                 }
3332                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3333                         chandef->center_freq2 =
3334                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3335         }
3336
3337         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3338                 chandef->edmg.channels =
3339                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3340
3341                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3342                         chandef->edmg.bw_config =
3343                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3344         } else {
3345                 chandef->edmg.bw_config = 0;
3346                 chandef->edmg.channels = 0;
3347         }
3348
3349         if (!cfg80211_chandef_valid(chandef)) {
3350                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3351                 return -EINVAL;
3352         }
3353
3354         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3355                                      IEEE80211_CHAN_DISABLED)) {
3356                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3357                 return -EINVAL;
3358         }
3359
3360         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3361              chandef->width == NL80211_CHAN_WIDTH_10) &&
3362             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3363                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3364                 return -EINVAL;
3365         }
3366
3367         return 0;
3368 }
3369
3370 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3371                                  struct net_device *dev,
3372                                  struct genl_info *info,
3373                                  int _link_id)
3374 {
3375         struct cfg80211_chan_def chandef;
3376         int result;
3377         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3378         struct wireless_dev *wdev = NULL;
3379         int link_id = _link_id;
3380
3381         if (dev)
3382                 wdev = dev->ieee80211_ptr;
3383         if (!nl80211_can_set_dev_channel(wdev))
3384                 return -EOPNOTSUPP;
3385         if (wdev)
3386                 iftype = wdev->iftype;
3387
3388         if (link_id < 0) {
3389                 if (wdev && wdev->valid_links)
3390                         return -EINVAL;
3391                 link_id = 0;
3392         }
3393
3394         result = nl80211_parse_chandef(rdev, info, &chandef);
3395         if (result)
3396                 return result;
3397
3398         switch (iftype) {
3399         case NL80211_IFTYPE_AP:
3400         case NL80211_IFTYPE_P2P_GO:
3401                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3402                                                    iftype))
3403                         return -EINVAL;
3404                 if (wdev->links[link_id].ap.beacon_interval) {
3405                         struct ieee80211_channel *cur_chan;
3406
3407                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3408                             !(rdev->wiphy.features &
3409                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3410                                 return -EBUSY;
3411
3412                         /* Only allow dynamic channel width changes */
3413                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3414                         if (chandef.chan != cur_chan)
3415                                 return -EBUSY;
3416
3417                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3418                                                        &chandef);
3419                         if (result)
3420                                 return result;
3421                         wdev->links[link_id].ap.chandef = chandef;
3422                 } else {
3423                         wdev->u.ap.preset_chandef = chandef;
3424                 }
3425                 return 0;
3426         case NL80211_IFTYPE_MESH_POINT:
3427                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3428         case NL80211_IFTYPE_MONITOR:
3429                 return cfg80211_set_monitor_channel(rdev, &chandef);
3430         default:
3431                 break;
3432         }
3433
3434         return -EINVAL;
3435 }
3436
3437 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3438 {
3439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3440         int link_id = nl80211_link_id_or_invalid(info->attrs);
3441         struct net_device *netdev = info->user_ptr[1];
3442
3443         return __nl80211_set_channel(rdev, netdev, info, link_id);
3444 }
3445
3446 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3447 {
3448         struct cfg80211_registered_device *rdev = NULL;
3449         struct net_device *netdev = NULL;
3450         struct wireless_dev *wdev;
3451         int result = 0, rem_txq_params = 0;
3452         struct nlattr *nl_txq_params;
3453         u32 changed;
3454         u8 retry_short = 0, retry_long = 0;
3455         u32 frag_threshold = 0, rts_threshold = 0;
3456         u8 coverage_class = 0;
3457         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3458
3459         rtnl_lock();
3460         /*
3461          * Try to find the wiphy and netdev. Normally this
3462          * function shouldn't need the netdev, but this is
3463          * done for backward compatibility -- previously
3464          * setting the channel was done per wiphy, but now
3465          * it is per netdev. Previous userland like hostapd
3466          * also passed a netdev to set_wiphy, so that it is
3467          * possible to let that go to the right netdev!
3468          */
3469
3470         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3471                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3472
3473                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3474                 if (netdev && netdev->ieee80211_ptr)
3475                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3476                 else
3477                         netdev = NULL;
3478         }
3479
3480         if (!netdev) {
3481                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3482                                                   info->attrs);
3483                 if (IS_ERR(rdev)) {
3484                         rtnl_unlock();
3485                         return PTR_ERR(rdev);
3486                 }
3487                 wdev = NULL;
3488                 netdev = NULL;
3489                 result = 0;
3490         } else
3491                 wdev = netdev->ieee80211_ptr;
3492
3493         wiphy_lock(&rdev->wiphy);
3494
3495         /*
3496          * end workaround code, by now the rdev is available
3497          * and locked, and wdev may or may not be NULL.
3498          */
3499
3500         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3501                 result = cfg80211_dev_rename(
3502                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3503         rtnl_unlock();
3504
3505         if (result)
3506                 goto out;
3507
3508         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3509                 struct ieee80211_txq_params txq_params;
3510                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3511
3512                 if (!rdev->ops->set_txq_params) {
3513                         result = -EOPNOTSUPP;
3514                         goto out;
3515                 }
3516
3517                 if (!netdev) {
3518                         result = -EINVAL;
3519                         goto out;
3520                 }
3521
3522                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3523                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3524                         result = -EINVAL;
3525                         goto out;
3526                 }
3527
3528                 if (!netif_running(netdev)) {
3529                         result = -ENETDOWN;
3530                         goto out;
3531                 }
3532
3533                 nla_for_each_nested(nl_txq_params,
3534                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3535                                     rem_txq_params) {
3536                         result = nla_parse_nested_deprecated(tb,
3537                                                              NL80211_TXQ_ATTR_MAX,
3538                                                              nl_txq_params,
3539                                                              txq_params_policy,
3540                                                              info->extack);
3541                         if (result)
3542                                 goto out;
3543                         result = parse_txq_params(tb, &txq_params);
3544                         if (result)
3545                                 goto out;
3546
3547                         txq_params.link_id =
3548                                 nl80211_link_id_or_invalid(info->attrs);
3549
3550                         if (txq_params.link_id >= 0 &&
3551                             !(netdev->ieee80211_ptr->valid_links &
3552                               BIT(txq_params.link_id)))
3553                                 result = -ENOLINK;
3554                         else if (txq_params.link_id >= 0 &&
3555                                  !netdev->ieee80211_ptr->valid_links)
3556                                 result = -EINVAL;
3557                         else
3558                                 result = rdev_set_txq_params(rdev, netdev,
3559                                                              &txq_params);
3560                         if (result)
3561                                 goto out;
3562                 }
3563         }
3564
3565         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3566                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3567
3568                 if (wdev) {
3569                         result = __nl80211_set_channel(
3570                                 rdev,
3571                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3572                                 info, link_id);
3573                 } else {
3574                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3575                 }
3576
3577                 if (result)
3578                         goto out;
3579         }
3580
3581         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3582                 struct wireless_dev *txp_wdev = wdev;
3583                 enum nl80211_tx_power_setting type;
3584                 int idx, mbm = 0;
3585
3586                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3587                         txp_wdev = NULL;
3588
3589                 if (!rdev->ops->set_tx_power) {
3590                         result = -EOPNOTSUPP;
3591                         goto out;
3592                 }
3593
3594                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3595                 type = nla_get_u32(info->attrs[idx]);
3596
3597                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3598                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3599                         result = -EINVAL;
3600                         goto out;
3601                 }
3602
3603                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3604                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3605                         mbm = nla_get_u32(info->attrs[idx]);
3606                 }
3607
3608                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3609                 if (result)
3610                         goto out;
3611         }
3612
3613         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3614             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3615                 u32 tx_ant, rx_ant;
3616
3617                 if ((!rdev->wiphy.available_antennas_tx &&
3618                      !rdev->wiphy.available_antennas_rx) ||
3619                     !rdev->ops->set_antenna) {
3620                         result = -EOPNOTSUPP;
3621                         goto out;
3622                 }
3623
3624                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3625                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3626
3627                 /* reject antenna configurations which don't match the
3628                  * available antenna masks, except for the "all" mask */
3629                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3630                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3631                         result = -EINVAL;
3632                         goto out;
3633                 }
3634
3635                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3636                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3637
3638                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3639                 if (result)
3640                         goto out;
3641         }
3642
3643         changed = 0;
3644
3645         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3646                 retry_short = nla_get_u8(
3647                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3648
3649                 changed |= WIPHY_PARAM_RETRY_SHORT;
3650         }
3651
3652         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3653                 retry_long = nla_get_u8(
3654                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3655
3656                 changed |= WIPHY_PARAM_RETRY_LONG;
3657         }
3658
3659         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3660                 frag_threshold = nla_get_u32(
3661                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3662                 if (frag_threshold < 256) {
3663                         result = -EINVAL;
3664                         goto out;
3665                 }
3666
3667                 if (frag_threshold != (u32) -1) {
3668                         /*
3669                          * Fragments (apart from the last one) are required to
3670                          * have even length. Make the fragmentation code
3671                          * simpler by stripping LSB should someone try to use
3672                          * odd threshold value.
3673                          */
3674                         frag_threshold &= ~0x1;
3675                 }
3676                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3677         }
3678
3679         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3680                 rts_threshold = nla_get_u32(
3681                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3682                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3683         }
3684
3685         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3686                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3687                         result = -EINVAL;
3688                         goto out;
3689                 }
3690
3691                 coverage_class = nla_get_u8(
3692                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3693                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3694         }
3695
3696         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3697                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3698                         result = -EOPNOTSUPP;
3699                         goto out;
3700                 }
3701
3702                 changed |= WIPHY_PARAM_DYN_ACK;
3703         }
3704
3705         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3706                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3707                                              NL80211_EXT_FEATURE_TXQS)) {
3708                         result = -EOPNOTSUPP;
3709                         goto out;
3710                 }
3711                 txq_limit = nla_get_u32(
3712                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3713                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3714         }
3715
3716         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3717                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3718                                              NL80211_EXT_FEATURE_TXQS)) {
3719                         result = -EOPNOTSUPP;
3720                         goto out;
3721                 }
3722                 txq_memory_limit = nla_get_u32(
3723                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3724                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3725         }
3726
3727         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3728                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3729                                              NL80211_EXT_FEATURE_TXQS)) {
3730                         result = -EOPNOTSUPP;
3731                         goto out;
3732                 }
3733                 txq_quantum = nla_get_u32(
3734                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3735                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3736         }
3737
3738         if (changed) {
3739                 u8 old_retry_short, old_retry_long;
3740                 u32 old_frag_threshold, old_rts_threshold;
3741                 u8 old_coverage_class;
3742                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3743
3744                 if (!rdev->ops->set_wiphy_params) {
3745                         result = -EOPNOTSUPP;
3746                         goto out;
3747                 }
3748
3749                 old_retry_short = rdev->wiphy.retry_short;
3750                 old_retry_long = rdev->wiphy.retry_long;
3751                 old_frag_threshold = rdev->wiphy.frag_threshold;
3752                 old_rts_threshold = rdev->wiphy.rts_threshold;
3753                 old_coverage_class = rdev->wiphy.coverage_class;
3754                 old_txq_limit = rdev->wiphy.txq_limit;
3755                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3756                 old_txq_quantum = rdev->wiphy.txq_quantum;
3757
3758                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3759                         rdev->wiphy.retry_short = retry_short;
3760                 if (changed & WIPHY_PARAM_RETRY_LONG)
3761                         rdev->wiphy.retry_long = retry_long;
3762                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3763                         rdev->wiphy.frag_threshold = frag_threshold;
3764                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3765                         rdev->wiphy.rts_threshold = rts_threshold;
3766                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3767                         rdev->wiphy.coverage_class = coverage_class;
3768                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3769                         rdev->wiphy.txq_limit = txq_limit;
3770                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3771                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3772                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3773                         rdev->wiphy.txq_quantum = txq_quantum;
3774
3775                 result = rdev_set_wiphy_params(rdev, changed);
3776                 if (result) {
3777                         rdev->wiphy.retry_short = old_retry_short;
3778                         rdev->wiphy.retry_long = old_retry_long;
3779                         rdev->wiphy.frag_threshold = old_frag_threshold;
3780                         rdev->wiphy.rts_threshold = old_rts_threshold;
3781                         rdev->wiphy.coverage_class = old_coverage_class;
3782                         rdev->wiphy.txq_limit = old_txq_limit;
3783                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3784                         rdev->wiphy.txq_quantum = old_txq_quantum;
3785                         goto out;
3786                 }
3787         }
3788
3789         result = 0;
3790
3791 out:
3792         wiphy_unlock(&rdev->wiphy);
3793         return result;
3794 }
3795
3796 int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
3797 {
3798         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3799                 return -EINVAL;
3800
3801         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3802                         chandef->chan->center_freq))
3803                 return -ENOBUFS;
3804         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3805                         chandef->chan->freq_offset))
3806                 return -ENOBUFS;
3807         switch (chandef->width) {
3808         case NL80211_CHAN_WIDTH_20_NOHT:
3809         case NL80211_CHAN_WIDTH_20:
3810         case NL80211_CHAN_WIDTH_40:
3811                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3812                                 cfg80211_get_chandef_type(chandef)))
3813                         return -ENOBUFS;
3814                 break;
3815         default:
3816                 break;
3817         }
3818         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3819                 return -ENOBUFS;
3820         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3821                 return -ENOBUFS;
3822         if (chandef->center_freq2 &&
3823             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3824                 return -ENOBUFS;
3825         return 0;
3826 }
3827 EXPORT_SYMBOL(nl80211_send_chandef);
3828
3829 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3830                               struct cfg80211_registered_device *rdev,
3831                               struct wireless_dev *wdev,
3832                               enum nl80211_commands cmd)
3833 {
3834         struct net_device *dev = wdev->netdev;
3835         void *hdr;
3836
3837         lockdep_assert_wiphy(&rdev->wiphy);
3838
3839         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3840                 cmd != NL80211_CMD_DEL_INTERFACE &&
3841                 cmd != NL80211_CMD_SET_INTERFACE);
3842
3843         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3844         if (!hdr)
3845                 return -1;
3846
3847         if (dev &&
3848             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3849              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3850                 goto nla_put_failure;
3851
3852         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3853             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3854             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3855                               NL80211_ATTR_PAD) ||
3856             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3857             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3858                         rdev->devlist_generation ^
3859                         (cfg80211_rdev_list_generation << 2)) ||
3860             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3861                 goto nla_put_failure;
3862
3863         if (rdev->ops->get_channel && !wdev->valid_links) {
3864                 struct cfg80211_chan_def chandef = {};
3865                 int ret;
3866
3867                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3868                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3869                         goto nla_put_failure;
3870         }
3871
3872         if (rdev->ops->get_tx_power) {
3873                 int dbm, ret;
3874
3875                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3876                 if (ret == 0 &&
3877                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3878                                 DBM_TO_MBM(dbm)))
3879                         goto nla_put_failure;
3880         }
3881
3882         switch (wdev->iftype) {
3883         case NL80211_IFTYPE_AP:
3884         case NL80211_IFTYPE_P2P_GO:
3885                 if (wdev->u.ap.ssid_len &&
3886                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3887                             wdev->u.ap.ssid))
3888                         goto nla_put_failure;
3889                 break;
3890         case NL80211_IFTYPE_STATION:
3891         case NL80211_IFTYPE_P2P_CLIENT:
3892                 if (wdev->u.client.ssid_len &&
3893                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3894                             wdev->u.client.ssid))
3895                         goto nla_put_failure;
3896                 break;
3897         case NL80211_IFTYPE_ADHOC:
3898                 if (wdev->u.ibss.ssid_len &&
3899                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3900                             wdev->u.ibss.ssid))
3901                         goto nla_put_failure;
3902                 break;
3903         default:
3904                 /* nothing */
3905                 break;
3906         }
3907
3908         if (rdev->ops->get_txq_stats) {
3909                 struct cfg80211_txq_stats txqstats = {};
3910                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3911
3912                 if (ret == 0 &&
3913                     !nl80211_put_txq_stats(msg, &txqstats,
3914                                            NL80211_ATTR_TXQ_STATS))
3915                         goto nla_put_failure;
3916         }
3917
3918         if (wdev->valid_links) {
3919                 unsigned int link_id;
3920                 struct nlattr *links = nla_nest_start(msg,
3921                                                       NL80211_ATTR_MLO_LINKS);
3922
3923                 if (!links)
3924                         goto nla_put_failure;
3925
3926                 for_each_valid_link(wdev, link_id) {
3927                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3928                         struct cfg80211_chan_def chandef = {};
3929                         int ret;
3930
3931                         if (!link)
3932                                 goto nla_put_failure;
3933
3934                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3935                                 goto nla_put_failure;
3936                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3937                                     wdev->links[link_id].addr))
3938                                 goto nla_put_failure;
3939
3940                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3941                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3942                                 goto nla_put_failure;
3943
3944                         nla_nest_end(msg, link);
3945                 }
3946
3947                 nla_nest_end(msg, links);
3948         }
3949
3950         genlmsg_end(msg, hdr);
3951         return 0;
3952
3953  nla_put_failure:
3954         genlmsg_cancel(msg, hdr);
3955         return -EMSGSIZE;
3956 }
3957
3958 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3959 {
3960         int wp_idx = 0;
3961         int if_idx = 0;
3962         int wp_start = cb->args[0];
3963         int if_start = cb->args[1];
3964         int filter_wiphy = -1;
3965         struct cfg80211_registered_device *rdev;
3966         struct wireless_dev *wdev;
3967         int ret;
3968
3969         rtnl_lock();
3970         if (!cb->args[2]) {
3971                 struct nl80211_dump_wiphy_state state = {
3972                         .filter_wiphy = -1,
3973                 };
3974
3975                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3976                 if (ret)
3977                         goto out_unlock;
3978
3979                 filter_wiphy = state.filter_wiphy;
3980
3981                 /*
3982                  * if filtering, set cb->args[2] to +1 since 0 is the default
3983                  * value needed to determine that parsing is necessary.
3984                  */
3985                 if (filter_wiphy >= 0)
3986                         cb->args[2] = filter_wiphy + 1;
3987                 else
3988                         cb->args[2] = -1;
3989         } else if (cb->args[2] > 0) {
3990                 filter_wiphy = cb->args[2] - 1;
3991         }
3992
3993         for_each_rdev(rdev) {
3994                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3995                         continue;
3996                 if (wp_idx < wp_start) {
3997                         wp_idx++;
3998                         continue;
3999                 }
4000
4001                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
4002                         continue;
4003
4004                 if_idx = 0;
4005
4006                 wiphy_lock(&rdev->wiphy);
4007                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4008                         if (if_idx < if_start) {
4009                                 if_idx++;
4010                                 continue;
4011                         }
4012                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
4013                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
4014                                                rdev, wdev,
4015                                                NL80211_CMD_NEW_INTERFACE) < 0) {
4016                                 wiphy_unlock(&rdev->wiphy);
4017                                 goto out;
4018                         }
4019                         if_idx++;
4020                 }
4021                 wiphy_unlock(&rdev->wiphy);
4022
4023                 if_start = 0;
4024                 wp_idx++;
4025         }
4026  out:
4027         cb->args[0] = wp_idx;
4028         cb->args[1] = if_idx;
4029
4030         ret = skb->len;
4031  out_unlock:
4032         rtnl_unlock();
4033
4034         return ret;
4035 }
4036
4037 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
4038 {
4039         struct sk_buff *msg;
4040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4041         struct wireless_dev *wdev = info->user_ptr[1];
4042
4043         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4044         if (!msg)
4045                 return -ENOMEM;
4046
4047         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4048                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4049                 nlmsg_free(msg);
4050                 return -ENOBUFS;
4051         }
4052
4053         return genlmsg_reply(msg, info);
4054 }
4055
4056 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
4057         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
4058         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
4059         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
4060         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
4061         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4062         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4063 };
4064
4065 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4066 {
4067         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4068         int flag;
4069
4070         *mntrflags = 0;
4071
4072         if (!nla)
4073                 return -EINVAL;
4074
4075         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4076                 return -EINVAL;
4077
4078         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4079                 if (flags[flag])
4080                         *mntrflags |= (1<<flag);
4081
4082         *mntrflags |= MONITOR_FLAG_CHANGED;
4083
4084         return 0;
4085 }
4086
4087 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4088                                      enum nl80211_iftype type,
4089                                      struct genl_info *info,
4090                                      struct vif_params *params)
4091 {
4092         bool change = false;
4093         int err;
4094
4095         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4096                 if (type != NL80211_IFTYPE_MONITOR)
4097                         return -EINVAL;
4098
4099                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4100                                           &params->flags);
4101                 if (err)
4102                         return err;
4103
4104                 change = true;
4105         }
4106
4107         if (params->flags & MONITOR_FLAG_ACTIVE &&
4108             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4109                 return -EOPNOTSUPP;
4110
4111         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4112                 const u8 *mumimo_groups;
4113                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4114
4115                 if (type != NL80211_IFTYPE_MONITOR)
4116                         return -EINVAL;
4117
4118                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4119                         return -EOPNOTSUPP;
4120
4121                 mumimo_groups =
4122                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4123
4124                 /* bits 0 and 63 are reserved and must be zero */
4125                 if ((mumimo_groups[0] & BIT(0)) ||
4126                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4127                         return -EINVAL;
4128
4129                 params->vht_mumimo_groups = mumimo_groups;
4130                 change = true;
4131         }
4132
4133         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4134                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4135
4136                 if (type != NL80211_IFTYPE_MONITOR)
4137                         return -EINVAL;
4138
4139                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4140                         return -EOPNOTSUPP;
4141
4142                 params->vht_mumimo_follow_addr =
4143                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4144                 change = true;
4145         }
4146
4147         return change ? 1 : 0;
4148 }
4149
4150 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4151                                struct net_device *netdev, u8 use_4addr,
4152                                enum nl80211_iftype iftype)
4153 {
4154         if (!use_4addr) {
4155                 if (netdev && netif_is_bridge_port(netdev))
4156                         return -EBUSY;
4157                 return 0;
4158         }
4159
4160         switch (iftype) {
4161         case NL80211_IFTYPE_AP_VLAN:
4162                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4163                         return 0;
4164                 break;
4165         case NL80211_IFTYPE_STATION:
4166                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4167                         return 0;
4168                 break;
4169         default:
4170                 break;
4171         }
4172
4173         return -EOPNOTSUPP;
4174 }
4175
4176 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4177 {
4178         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4179         struct vif_params params;
4180         int err;
4181         enum nl80211_iftype otype, ntype;
4182         struct net_device *dev = info->user_ptr[1];
4183         bool change = false;
4184
4185         memset(&params, 0, sizeof(params));
4186
4187         otype = ntype = dev->ieee80211_ptr->iftype;
4188
4189         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4190                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4191                 if (otype != ntype)
4192                         change = true;
4193         }
4194
4195         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4196                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4197
4198                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4199                         return -EINVAL;
4200                 if (otype != NL80211_IFTYPE_MESH_POINT)
4201                         return -EINVAL;
4202                 if (netif_running(dev))
4203                         return -EBUSY;
4204
4205                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4206                              IEEE80211_MAX_MESH_ID_LEN);
4207                 wdev->u.mesh.id_up_len =
4208                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4209                 memcpy(wdev->u.mesh.id,
4210                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4211                        wdev->u.mesh.id_up_len);
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_4ADDR]) {
4215                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4216                 change = true;
4217                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4218                 if (err)
4219                         return err;
4220         } else {
4221                 params.use_4addr = -1;
4222         }
4223
4224         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4225         if (err < 0)
4226                 return err;
4227         if (err > 0)
4228                 change = true;
4229
4230         if (change)
4231                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4232         else
4233                 err = 0;
4234
4235         if (!err && params.use_4addr != -1)
4236                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4237
4238         if (change && !err) {
4239                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4240
4241                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4242         }
4243
4244         return err;
4245 }
4246
4247 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4248 {
4249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4250         struct vif_params params;
4251         struct wireless_dev *wdev;
4252         struct sk_buff *msg;
4253         int err;
4254         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4255
4256         memset(&params, 0, sizeof(params));
4257
4258         if (!info->attrs[NL80211_ATTR_IFNAME])
4259                 return -EINVAL;
4260
4261         if (info->attrs[NL80211_ATTR_IFTYPE])
4262                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4263
4264         if (!rdev->ops->add_virtual_intf)
4265                 return -EOPNOTSUPP;
4266
4267         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4268              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4269             info->attrs[NL80211_ATTR_MAC]) {
4270                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4271                            ETH_ALEN);
4272                 if (!is_valid_ether_addr(params.macaddr))
4273                         return -EADDRNOTAVAIL;
4274         }
4275
4276         if (info->attrs[NL80211_ATTR_4ADDR]) {
4277                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4278                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4279                 if (err)
4280                         return err;
4281         }
4282
4283         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4284                 return -EOPNOTSUPP;
4285
4286         err = nl80211_parse_mon_options(rdev, type, info, &params);
4287         if (err < 0)
4288                 return err;
4289
4290         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4291         if (!msg)
4292                 return -ENOMEM;
4293
4294         wdev = rdev_add_virtual_intf(rdev,
4295                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4296                                 NET_NAME_USER, type, &params);
4297         if (WARN_ON(!wdev)) {
4298                 nlmsg_free(msg);
4299                 return -EPROTO;
4300         } else if (IS_ERR(wdev)) {
4301                 nlmsg_free(msg);
4302                 return PTR_ERR(wdev);
4303         }
4304
4305         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4306                 wdev->owner_nlportid = info->snd_portid;
4307
4308         switch (type) {
4309         case NL80211_IFTYPE_MESH_POINT:
4310                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4311                         break;
4312                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4313                              IEEE80211_MAX_MESH_ID_LEN);
4314                 wdev->u.mesh.id_up_len =
4315                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4316                 memcpy(wdev->u.mesh.id,
4317                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4318                        wdev->u.mesh.id_up_len);
4319                 break;
4320         case NL80211_IFTYPE_NAN:
4321         case NL80211_IFTYPE_P2P_DEVICE:
4322                 /*
4323                  * P2P Device and NAN do not have a netdev, so don't go
4324                  * through the netdev notifier and must be added here
4325                  */
4326                 cfg80211_init_wdev(wdev);
4327                 cfg80211_register_wdev(rdev, wdev);
4328                 break;
4329         default:
4330                 break;
4331         }
4332
4333         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4334                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4335                 nlmsg_free(msg);
4336                 return -ENOBUFS;
4337         }
4338
4339         return genlmsg_reply(msg, info);
4340 }
4341
4342 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4343 {
4344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4345         int ret;
4346
4347         /* to avoid failing a new interface creation due to pending removal */
4348         cfg80211_destroy_ifaces(rdev);
4349
4350         wiphy_lock(&rdev->wiphy);
4351         ret = _nl80211_new_interface(skb, info);
4352         wiphy_unlock(&rdev->wiphy);
4353
4354         return ret;
4355 }
4356
4357 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4358 {
4359         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4360         struct wireless_dev *wdev = info->user_ptr[1];
4361
4362         if (!rdev->ops->del_virtual_intf)
4363                 return -EOPNOTSUPP;
4364
4365         /*
4366          * We hold RTNL, so this is safe, without RTNL opencount cannot
4367          * reach 0, and thus the rdev cannot be deleted.
4368          *
4369          * We need to do it for the dev_close(), since that will call
4370          * the netdev notifiers, and we need to acquire the mutex there
4371          * but don't know if we get there from here or from some other
4372          * place (e.g. "ip link set ... down").
4373          */
4374         mutex_unlock(&rdev->wiphy.mtx);
4375
4376         /*
4377          * If we remove a wireless device without a netdev then clear
4378          * user_ptr[1] so that nl80211_post_doit won't dereference it
4379          * to check if it needs to do dev_put(). Otherwise it crashes
4380          * since the wdev has been freed, unlike with a netdev where
4381          * we need the dev_put() for the netdev to really be freed.
4382          */
4383         if (!wdev->netdev)
4384                 info->user_ptr[1] = NULL;
4385         else
4386                 dev_close(wdev->netdev);
4387
4388         mutex_lock(&rdev->wiphy.mtx);
4389
4390         return cfg80211_remove_virtual_intf(rdev, wdev);
4391 }
4392
4393 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4394 {
4395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4396         struct net_device *dev = info->user_ptr[1];
4397         u16 noack_map;
4398
4399         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4400                 return -EINVAL;
4401
4402         if (!rdev->ops->set_noack_map)
4403                 return -EOPNOTSUPP;
4404
4405         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4406
4407         return rdev_set_noack_map(rdev, dev, noack_map);
4408 }
4409
4410 static int nl80211_validate_key_link_id(struct genl_info *info,
4411                                         struct wireless_dev *wdev,
4412                                         int link_id, bool pairwise)
4413 {
4414         if (pairwise) {
4415                 if (link_id != -1) {
4416                         GENL_SET_ERR_MSG(info,
4417                                          "link ID not allowed for pairwise key");
4418                         return -EINVAL;
4419                 }
4420
4421                 return 0;
4422         }
4423
4424         if (wdev->valid_links) {
4425                 if (link_id == -1) {
4426                         GENL_SET_ERR_MSG(info,
4427                                          "link ID must for MLO group key");
4428                         return -EINVAL;
4429                 }
4430                 if (!(wdev->valid_links & BIT(link_id))) {
4431                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4432                         return -EINVAL;
4433                 }
4434         } else if (link_id != -1) {
4435                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4436                 return -EINVAL;
4437         }
4438
4439         return 0;
4440 }
4441
4442 struct get_key_cookie {
4443         struct sk_buff *msg;
4444         int error;
4445         int idx;
4446 };
4447
4448 static void get_key_callback(void *c, struct key_params *params)
4449 {
4450         struct nlattr *key;
4451         struct get_key_cookie *cookie = c;
4452
4453         if ((params->key &&
4454              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4455                      params->key_len, params->key)) ||
4456             (params->seq &&
4457              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4458                      params->seq_len, params->seq)) ||
4459             (params->cipher &&
4460              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4461                          params->cipher)))
4462                 goto nla_put_failure;
4463
4464         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4465         if (!key)
4466                 goto nla_put_failure;
4467
4468         if ((params->key &&
4469              nla_put(cookie->msg, NL80211_KEY_DATA,
4470                      params->key_len, params->key)) ||
4471             (params->seq &&
4472              nla_put(cookie->msg, NL80211_KEY_SEQ,
4473                      params->seq_len, params->seq)) ||
4474             (params->cipher &&
4475              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4476                          params->cipher)))
4477                 goto nla_put_failure;
4478
4479         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4480                 goto nla_put_failure;
4481
4482         nla_nest_end(cookie->msg, key);
4483
4484         return;
4485  nla_put_failure:
4486         cookie->error = 1;
4487 }
4488
4489 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4490 {
4491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4492         int err;
4493         struct net_device *dev = info->user_ptr[1];
4494         u8 key_idx = 0;
4495         const u8 *mac_addr = NULL;
4496         bool pairwise;
4497         struct get_key_cookie cookie = {
4498                 .error = 0,
4499         };
4500         void *hdr;
4501         struct sk_buff *msg;
4502         bool bigtk_support = false;
4503         int link_id = nl80211_link_id_or_invalid(info->attrs);
4504         struct wireless_dev *wdev = dev->ieee80211_ptr;
4505
4506         if (wiphy_ext_feature_isset(&rdev->wiphy,
4507                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4508                 bigtk_support = true;
4509
4510         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4511              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4512             wiphy_ext_feature_isset(&rdev->wiphy,
4513                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4514                 bigtk_support = true;
4515
4516         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4517                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4518
4519                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4520                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4521                         return -EINVAL;
4522                 }
4523         }
4524
4525         if (info->attrs[NL80211_ATTR_MAC])
4526                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4527
4528         pairwise = !!mac_addr;
4529         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4530                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4531
4532                 if (kt != NL80211_KEYTYPE_GROUP &&
4533                     kt != NL80211_KEYTYPE_PAIRWISE)
4534                         return -EINVAL;
4535                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4536         }
4537
4538         if (!rdev->ops->get_key)
4539                 return -EOPNOTSUPP;
4540
4541         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4542                 return -ENOENT;
4543
4544         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4545         if (!msg)
4546                 return -ENOMEM;
4547
4548         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4549                              NL80211_CMD_NEW_KEY);
4550         if (!hdr)
4551                 goto nla_put_failure;
4552
4553         cookie.msg = msg;
4554         cookie.idx = key_idx;
4555
4556         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4557             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4558                 goto nla_put_failure;
4559         if (mac_addr &&
4560             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4561                 goto nla_put_failure;
4562
4563         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4564         if (err)
4565                 goto free_msg;
4566
4567         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4568                            &cookie, get_key_callback);
4569
4570         if (err)
4571                 goto free_msg;
4572
4573         if (cookie.error)
4574                 goto nla_put_failure;
4575
4576         genlmsg_end(msg, hdr);
4577         return genlmsg_reply(msg, info);
4578
4579  nla_put_failure:
4580         err = -ENOBUFS;
4581  free_msg:
4582         nlmsg_free(msg);
4583         return err;
4584 }
4585
4586 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4587 {
4588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4589         struct key_parse key;
4590         int err;
4591         struct net_device *dev = info->user_ptr[1];
4592         int link_id = nl80211_link_id_or_invalid(info->attrs);
4593         struct wireless_dev *wdev = dev->ieee80211_ptr;
4594
4595         err = nl80211_parse_key(info, &key);
4596         if (err)
4597                 return err;
4598
4599         if (key.idx < 0)
4600                 return -EINVAL;
4601
4602         /* Only support setting default key and
4603          * Extended Key ID action NL80211_KEY_SET_TX.
4604          */
4605         if (!key.def && !key.defmgmt && !key.defbeacon &&
4606             !(key.p.mode == NL80211_KEY_SET_TX))
4607                 return -EINVAL;
4608
4609         if (key.def) {
4610                 if (!rdev->ops->set_default_key)
4611                         return -EOPNOTSUPP;
4612
4613                 err = nl80211_key_allowed(wdev);
4614                 if (err)
4615                         return err;
4616
4617                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4618                 if (err)
4619                         return err;
4620
4621                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4622                                            key.def_uni, key.def_multi);
4623
4624                 if (err)
4625                         return err;
4626
4627 #ifdef CONFIG_CFG80211_WEXT
4628                 wdev->wext.default_key = key.idx;
4629 #endif
4630                 return 0;
4631         } else if (key.defmgmt) {
4632                 if (key.def_uni || !key.def_multi)
4633                         return -EINVAL;
4634
4635                 if (!rdev->ops->set_default_mgmt_key)
4636                         return -EOPNOTSUPP;
4637
4638                 err = nl80211_key_allowed(wdev);
4639                 if (err)
4640                         return err;
4641
4642                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4643                 if (err)
4644                         return err;
4645
4646                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4647                 if (err)
4648                         return err;
4649
4650 #ifdef CONFIG_CFG80211_WEXT
4651                 wdev->wext.default_mgmt_key = key.idx;
4652 #endif
4653                 return 0;
4654         } else if (key.defbeacon) {
4655                 if (key.def_uni || !key.def_multi)
4656                         return -EINVAL;
4657
4658                 if (!rdev->ops->set_default_beacon_key)
4659                         return -EOPNOTSUPP;
4660
4661                 err = nl80211_key_allowed(wdev);
4662                 if (err)
4663                         return err;
4664
4665                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4666                 if (err)
4667                         return err;
4668
4669                 return rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4670         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4671                    wiphy_ext_feature_isset(&rdev->wiphy,
4672                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4673                 u8 *mac_addr = NULL;
4674
4675                 if (info->attrs[NL80211_ATTR_MAC])
4676                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4677
4678                 if (!mac_addr || key.idx < 0 || key.idx > 1)
4679                         return -EINVAL;
4680
4681                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4682                 if (err)
4683                         return err;
4684
4685                 return rdev_add_key(rdev, dev, link_id, key.idx,
4686                                     NL80211_KEYTYPE_PAIRWISE,
4687                                     mac_addr, &key.p);
4688         }
4689
4690         return -EINVAL;
4691 }
4692
4693 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4694 {
4695         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4696         int err;
4697         struct net_device *dev = info->user_ptr[1];
4698         struct key_parse key;
4699         const u8 *mac_addr = NULL;
4700         int link_id = nl80211_link_id_or_invalid(info->attrs);
4701         struct wireless_dev *wdev = dev->ieee80211_ptr;
4702
4703         err = nl80211_parse_key(info, &key);
4704         if (err)
4705                 return err;
4706
4707         if (!key.p.key) {
4708                 GENL_SET_ERR_MSG(info, "no key");
4709                 return -EINVAL;
4710         }
4711
4712         if (info->attrs[NL80211_ATTR_MAC])
4713                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4714
4715         if (key.type == -1) {
4716                 if (mac_addr)
4717                         key.type = NL80211_KEYTYPE_PAIRWISE;
4718                 else
4719                         key.type = NL80211_KEYTYPE_GROUP;
4720         }
4721
4722         /* for now */
4723         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4724             key.type != NL80211_KEYTYPE_GROUP) {
4725                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4726                 return -EINVAL;
4727         }
4728
4729         if (key.type == NL80211_KEYTYPE_GROUP &&
4730             info->attrs[NL80211_ATTR_VLAN_ID])
4731                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4732
4733         if (!rdev->ops->add_key)
4734                 return -EOPNOTSUPP;
4735
4736         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4737                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4738                                            mac_addr)) {
4739                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4740                 return -EINVAL;
4741         }
4742
4743         err = nl80211_key_allowed(wdev);
4744         if (err)
4745                 GENL_SET_ERR_MSG(info, "key not allowed");
4746
4747         if (!err)
4748                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4749                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4750
4751         if (!err) {
4752                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4753                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4754                                     mac_addr, &key.p);
4755                 if (err)
4756                         GENL_SET_ERR_MSG(info, "key addition failed");
4757         }
4758
4759         return err;
4760 }
4761
4762 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4763 {
4764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4765         int err;
4766         struct net_device *dev = info->user_ptr[1];
4767         u8 *mac_addr = NULL;
4768         struct key_parse key;
4769         int link_id = nl80211_link_id_or_invalid(info->attrs);
4770         struct wireless_dev *wdev = dev->ieee80211_ptr;
4771
4772         err = nl80211_parse_key(info, &key);
4773         if (err)
4774                 return err;
4775
4776         if (info->attrs[NL80211_ATTR_MAC])
4777                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4778
4779         if (key.type == -1) {
4780                 if (mac_addr)
4781                         key.type = NL80211_KEYTYPE_PAIRWISE;
4782                 else
4783                         key.type = NL80211_KEYTYPE_GROUP;
4784         }
4785
4786         /* for now */
4787         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4788             key.type != NL80211_KEYTYPE_GROUP)
4789                 return -EINVAL;
4790
4791         if (!cfg80211_valid_key_idx(rdev, key.idx,
4792                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4793                 return -EINVAL;
4794
4795         if (!rdev->ops->del_key)
4796                 return -EOPNOTSUPP;
4797
4798         err = nl80211_key_allowed(wdev);
4799
4800         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4801             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4802                 err = -ENOENT;
4803
4804         if (!err)
4805                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4806                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4807
4808         if (!err)
4809                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4810                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4811                                    mac_addr);
4812
4813 #ifdef CONFIG_CFG80211_WEXT
4814         if (!err) {
4815                 if (key.idx == wdev->wext.default_key)
4816                         wdev->wext.default_key = -1;
4817                 else if (key.idx == wdev->wext.default_mgmt_key)
4818                         wdev->wext.default_mgmt_key = -1;
4819         }
4820 #endif
4821
4822         return err;
4823 }
4824
4825 /* This function returns an error or the number of nested attributes */
4826 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4827 {
4828         struct nlattr *attr;
4829         int n_entries = 0, tmp;
4830
4831         nla_for_each_nested(attr, nl_attr, tmp) {
4832                 if (nla_len(attr) != ETH_ALEN)
4833                         return -EINVAL;
4834
4835                 n_entries++;
4836         }
4837
4838         return n_entries;
4839 }
4840
4841 /*
4842  * This function parses ACL information and allocates memory for ACL data.
4843  * On successful return, the calling function is responsible to free the
4844  * ACL buffer returned by this function.
4845  */
4846 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4847                                                 struct genl_info *info)
4848 {
4849         enum nl80211_acl_policy acl_policy;
4850         struct nlattr *attr;
4851         struct cfg80211_acl_data *acl;
4852         int i = 0, n_entries, tmp;
4853
4854         if (!wiphy->max_acl_mac_addrs)
4855                 return ERR_PTR(-EOPNOTSUPP);
4856
4857         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4858                 return ERR_PTR(-EINVAL);
4859
4860         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4861         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4862             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4863                 return ERR_PTR(-EINVAL);
4864
4865         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4866                 return ERR_PTR(-EINVAL);
4867
4868         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4869         if (n_entries < 0)
4870                 return ERR_PTR(n_entries);
4871
4872         if (n_entries > wiphy->max_acl_mac_addrs)
4873                 return ERR_PTR(-EOPNOTSUPP);
4874
4875         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4876         if (!acl)
4877                 return ERR_PTR(-ENOMEM);
4878         acl->n_acl_entries = n_entries;
4879
4880         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4881                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4882                 i++;
4883         }
4884         acl->acl_policy = acl_policy;
4885
4886         return acl;
4887 }
4888
4889 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4890 {
4891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4892         struct net_device *dev = info->user_ptr[1];
4893         struct cfg80211_acl_data *acl;
4894         int err;
4895
4896         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4897             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4898                 return -EOPNOTSUPP;
4899
4900         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4901                 return -EINVAL;
4902
4903         acl = parse_acl_data(&rdev->wiphy, info);
4904         if (IS_ERR(acl))
4905                 return PTR_ERR(acl);
4906
4907         err = rdev_set_mac_acl(rdev, dev, acl);
4908
4909         kfree(acl);
4910
4911         return err;
4912 }
4913
4914 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4915                            u8 *rates, u8 rates_len)
4916 {
4917         u8 i;
4918         u32 mask = 0;
4919
4920         for (i = 0; i < rates_len; i++) {
4921                 int rate = (rates[i] & 0x7f) * 5;
4922                 int ridx;
4923
4924                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4925                         struct ieee80211_rate *srate =
4926                                 &sband->bitrates[ridx];
4927                         if (rate == srate->bitrate) {
4928                                 mask |= 1 << ridx;
4929                                 break;
4930                         }
4931                 }
4932                 if (ridx == sband->n_bitrates)
4933                         return 0; /* rate not found */
4934         }
4935
4936         return mask;
4937 }
4938
4939 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4940                                u8 *rates, u8 rates_len,
4941                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4942 {
4943         u8 i;
4944
4945         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4946
4947         for (i = 0; i < rates_len; i++) {
4948                 int ridx, rbit;
4949
4950                 ridx = rates[i] / 8;
4951                 rbit = BIT(rates[i] % 8);
4952
4953                 /* check validity */
4954                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4955                         return false;
4956
4957                 /* check availability */
4958                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4959                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4960                         mcs[ridx] |= rbit;
4961                 else
4962                         return false;
4963         }
4964
4965         return true;
4966 }
4967
4968 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4969 {
4970         u16 mcs_mask = 0;
4971
4972         switch (vht_mcs_map) {
4973         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4974                 break;
4975         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4976                 mcs_mask = 0x00FF;
4977                 break;
4978         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4979                 mcs_mask = 0x01FF;
4980                 break;
4981         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4982                 mcs_mask = 0x03FF;
4983                 break;
4984         default:
4985                 break;
4986         }
4987
4988         return mcs_mask;
4989 }
4990
4991 static void vht_build_mcs_mask(u16 vht_mcs_map,
4992                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4993 {
4994         u8 nss;
4995
4996         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4997                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4998                 vht_mcs_map >>= 2;
4999         }
5000 }
5001
5002 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
5003                              struct nl80211_txrate_vht *txrate,
5004                              u16 mcs[NL80211_VHT_NSS_MAX])
5005 {
5006         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5007         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
5008         u8 i;
5009
5010         if (!sband->vht_cap.vht_supported)
5011                 return false;
5012
5013         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
5014
5015         /* Build vht_mcs_mask from VHT capabilities */
5016         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5017
5018         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5019                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5020                         mcs[i] = txrate->mcs[i];
5021                 else
5022                         return false;
5023         }
5024
5025         return true;
5026 }
5027
5028 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
5029 {
5030         switch (he_mcs_map) {
5031         case IEEE80211_HE_MCS_NOT_SUPPORTED:
5032                 return 0;
5033         case IEEE80211_HE_MCS_SUPPORT_0_7:
5034                 return 0x00FF;
5035         case IEEE80211_HE_MCS_SUPPORT_0_9:
5036                 return 0x03FF;
5037         case IEEE80211_HE_MCS_SUPPORT_0_11:
5038                 return 0xFFF;
5039         default:
5040                 break;
5041         }
5042         return 0;
5043 }
5044
5045 static void he_build_mcs_mask(u16 he_mcs_map,
5046                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5047 {
5048         u8 nss;
5049
5050         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5051                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5052                 he_mcs_map >>= 2;
5053         }
5054 }
5055
5056 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5057                            const struct ieee80211_sta_he_cap *he_cap)
5058 {
5059         struct net_device *dev = info->user_ptr[1];
5060         struct wireless_dev *wdev = dev->ieee80211_ptr;
5061         struct cfg80211_chan_def *chandef;
5062         __le16 tx_mcs;
5063
5064         chandef = wdev_chandef(wdev, link_id);
5065         if (!chandef) {
5066                 /*
5067                  * This is probably broken, but we never maintained
5068                  * a chandef in these cases, so it always was.
5069                  */
5070                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5071         }
5072
5073         switch (chandef->width) {
5074         case NL80211_CHAN_WIDTH_80P80:
5075                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5076                 break;
5077         case NL80211_CHAN_WIDTH_160:
5078                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5079                 break;
5080         default:
5081                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5082                 break;
5083         }
5084
5085         return le16_to_cpu(tx_mcs);
5086 }
5087
5088 static bool he_set_mcs_mask(struct genl_info *info,
5089                             struct wireless_dev *wdev,
5090                             struct ieee80211_supported_band *sband,
5091                             struct nl80211_txrate_he *txrate,
5092                             u16 mcs[NL80211_HE_NSS_MAX],
5093                             unsigned int link_id)
5094 {
5095         const struct ieee80211_sta_he_cap *he_cap;
5096         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5097         u16 tx_mcs_map = 0;
5098         u8 i;
5099
5100         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5101         if (!he_cap)
5102                 return false;
5103
5104         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5105
5106         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5107
5108         /* Build he_mcs_mask from HE capabilities */
5109         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5110
5111         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5112                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5113                         mcs[i] = txrate->mcs[i];
5114                 else
5115                         return false;
5116         }
5117
5118         return true;
5119 }
5120
5121 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5122                                          struct nlattr *attrs[],
5123                                          enum nl80211_attrs attr,
5124                                          struct cfg80211_bitrate_mask *mask,
5125                                          struct net_device *dev,
5126                                          bool default_all_enabled,
5127                                          unsigned int link_id)
5128 {
5129         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5131         struct wireless_dev *wdev = dev->ieee80211_ptr;
5132         int rem, i;
5133         struct nlattr *tx_rates;
5134         struct ieee80211_supported_band *sband;
5135         u16 vht_tx_mcs_map, he_tx_mcs_map;
5136
5137         memset(mask, 0, sizeof(*mask));
5138         /* Default to all rates enabled */
5139         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5140                 const struct ieee80211_sta_he_cap *he_cap;
5141
5142                 if (!default_all_enabled)
5143                         break;
5144
5145                 sband = rdev->wiphy.bands[i];
5146
5147                 if (!sband)
5148                         continue;
5149
5150                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5151                 memcpy(mask->control[i].ht_mcs,
5152                        sband->ht_cap.mcs.rx_mask,
5153                        sizeof(mask->control[i].ht_mcs));
5154
5155                 if (sband->vht_cap.vht_supported) {
5156                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5157                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5158                 }
5159
5160                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5161                 if (!he_cap)
5162                         continue;
5163
5164                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5165                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5166
5167                 mask->control[i].he_gi = 0xFF;
5168                 mask->control[i].he_ltf = 0xFF;
5169         }
5170
5171         /* if no rates are given set it back to the defaults */
5172         if (!attrs[attr])
5173                 goto out;
5174
5175         /* The nested attribute uses enum nl80211_band as the index. This maps
5176          * directly to the enum nl80211_band values used in cfg80211.
5177          */
5178         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5179         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5180                 enum nl80211_band band = nla_type(tx_rates);
5181                 int err;
5182
5183                 if (band < 0 || band >= NUM_NL80211_BANDS)
5184                         return -EINVAL;
5185                 sband = rdev->wiphy.bands[band];
5186                 if (sband == NULL)
5187                         return -EINVAL;
5188                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5189                                                   tx_rates,
5190                                                   nl80211_txattr_policy,
5191                                                   info->extack);
5192                 if (err)
5193                         return err;
5194                 if (tb[NL80211_TXRATE_LEGACY]) {
5195                         mask->control[band].legacy = rateset_to_mask(
5196                                 sband,
5197                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5198                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5199                         if ((mask->control[band].legacy == 0) &&
5200                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5201                                 return -EINVAL;
5202                 }
5203                 if (tb[NL80211_TXRATE_HT]) {
5204                         if (!ht_rateset_to_mask(
5205                                         sband,
5206                                         nla_data(tb[NL80211_TXRATE_HT]),
5207                                         nla_len(tb[NL80211_TXRATE_HT]),
5208                                         mask->control[band].ht_mcs))
5209                                 return -EINVAL;
5210                 }
5211
5212                 if (tb[NL80211_TXRATE_VHT]) {
5213                         if (!vht_set_mcs_mask(
5214                                         sband,
5215                                         nla_data(tb[NL80211_TXRATE_VHT]),
5216                                         mask->control[band].vht_mcs))
5217                                 return -EINVAL;
5218                 }
5219
5220                 if (tb[NL80211_TXRATE_GI]) {
5221                         mask->control[band].gi =
5222                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5223                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5224                                 return -EINVAL;
5225                 }
5226                 if (tb[NL80211_TXRATE_HE] &&
5227                     !he_set_mcs_mask(info, wdev, sband,
5228                                      nla_data(tb[NL80211_TXRATE_HE]),
5229                                      mask->control[band].he_mcs,
5230                                      link_id))
5231                         return -EINVAL;
5232
5233                 if (tb[NL80211_TXRATE_HE_GI])
5234                         mask->control[band].he_gi =
5235                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5236                 if (tb[NL80211_TXRATE_HE_LTF])
5237                         mask->control[band].he_ltf =
5238                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5239
5240                 if (mask->control[band].legacy == 0) {
5241                         /* don't allow empty legacy rates if HT, VHT or HE
5242                          * are not even supported.
5243                          */
5244                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5245                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5246                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5247                                 return -EINVAL;
5248
5249                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5250                                 if (mask->control[band].ht_mcs[i])
5251                                         goto out;
5252
5253                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5254                                 if (mask->control[band].vht_mcs[i])
5255                                         goto out;
5256
5257                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5258                                 if (mask->control[band].he_mcs[i])
5259                                         goto out;
5260
5261                         /* legacy and mcs rates may not be both empty */
5262                         return -EINVAL;
5263                 }
5264         }
5265
5266 out:
5267         return 0;
5268 }
5269
5270 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5271                                    enum nl80211_band band,
5272                                    struct cfg80211_bitrate_mask *beacon_rate)
5273 {
5274         u32 count_ht, count_vht, count_he, i;
5275         u32 rate = beacon_rate->control[band].legacy;
5276
5277         /* Allow only one rate */
5278         if (hweight32(rate) > 1)
5279                 return -EINVAL;
5280
5281         count_ht = 0;
5282         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5283                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5284                         return -EINVAL;
5285                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5286                         count_ht++;
5287                         if (count_ht > 1)
5288                                 return -EINVAL;
5289                 }
5290                 if (count_ht && rate)
5291                         return -EINVAL;
5292         }
5293
5294         count_vht = 0;
5295         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5296                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5297                         return -EINVAL;
5298                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5299                         count_vht++;
5300                         if (count_vht > 1)
5301                                 return -EINVAL;
5302                 }
5303                 if (count_vht && rate)
5304                         return -EINVAL;
5305         }
5306
5307         count_he = 0;
5308         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5309                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5310                         return -EINVAL;
5311                 } else if (beacon_rate->control[band].he_mcs[i]) {
5312                         count_he++;
5313                         if (count_he > 1)
5314                                 return -EINVAL;
5315                 }
5316                 if (count_he && rate)
5317                         return -EINVAL;
5318         }
5319
5320         if ((count_ht && count_vht && count_he) ||
5321             (!rate && !count_ht && !count_vht && !count_he))
5322                 return -EINVAL;
5323
5324         if (rate &&
5325             !wiphy_ext_feature_isset(&rdev->wiphy,
5326                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5327                 return -EINVAL;
5328         if (count_ht &&
5329             !wiphy_ext_feature_isset(&rdev->wiphy,
5330                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5331                 return -EINVAL;
5332         if (count_vht &&
5333             !wiphy_ext_feature_isset(&rdev->wiphy,
5334                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5335                 return -EINVAL;
5336         if (count_he &&
5337             !wiphy_ext_feature_isset(&rdev->wiphy,
5338                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5339                 return -EINVAL;
5340
5341         return 0;
5342 }
5343
5344 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5345                                        struct net_device *dev,
5346                                        struct nlattr *attrs,
5347                                        struct cfg80211_mbssid_config *config,
5348                                        u8 num_elems)
5349 {
5350         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5351
5352         if (!wiphy->mbssid_max_interfaces)
5353                 return -EOPNOTSUPP;
5354
5355         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5356                              NULL) ||
5357             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5358                 return -EINVAL;
5359
5360         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5361         if (config->ema) {
5362                 if (!wiphy->ema_max_profile_periodicity)
5363                         return -EOPNOTSUPP;
5364
5365                 if (num_elems > wiphy->ema_max_profile_periodicity)
5366                         return -EINVAL;
5367         }
5368
5369         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5370         if (config->index >= wiphy->mbssid_max_interfaces ||
5371             (!config->index && !num_elems))
5372                 return -EINVAL;
5373
5374         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5375                 u32 tx_ifindex =
5376                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5377
5378                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5379                     (config->index && tx_ifindex == dev->ifindex))
5380                         return -EINVAL;
5381
5382                 if (tx_ifindex != dev->ifindex) {
5383                         struct net_device *tx_netdev =
5384                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5385
5386                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5387                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5388                             tx_netdev->ieee80211_ptr->iftype !=
5389                                                         NL80211_IFTYPE_AP) {
5390                                 dev_put(tx_netdev);
5391                                 return -EINVAL;
5392                         }
5393
5394                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5395                 } else {
5396                         config->tx_wdev = dev->ieee80211_ptr;
5397                 }
5398         } else if (!config->index) {
5399                 config->tx_wdev = dev->ieee80211_ptr;
5400         } else {
5401                 return -EINVAL;
5402         }
5403
5404         return 0;
5405 }
5406
5407 static struct cfg80211_mbssid_elems *
5408 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5409 {
5410         struct nlattr *nl_elems;
5411         struct cfg80211_mbssid_elems *elems;
5412         int rem_elems;
5413         u8 i = 0, num_elems = 0;
5414
5415         if (!wiphy->mbssid_max_interfaces)
5416                 return ERR_PTR(-EINVAL);
5417
5418         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5419                 if (num_elems >= 255)
5420                         return ERR_PTR(-EINVAL);
5421                 num_elems++;
5422         }
5423
5424         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5425         if (!elems)
5426                 return ERR_PTR(-ENOMEM);
5427         elems->cnt = num_elems;
5428
5429         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5430                 elems->elem[i].data = nla_data(nl_elems);
5431                 elems->elem[i].len = nla_len(nl_elems);
5432                 i++;
5433         }
5434         return elems;
5435 }
5436
5437 static struct cfg80211_rnr_elems *
5438 nl80211_parse_rnr_elems(struct wiphy *wiphy, struct nlattr *attrs,
5439                         struct netlink_ext_ack *extack)
5440 {
5441         struct nlattr *nl_elems;
5442         struct cfg80211_rnr_elems *elems;
5443         int rem_elems;
5444         u8 i = 0, num_elems = 0;
5445
5446         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5447                 int ret;
5448
5449                 ret = validate_ie_attr(nl_elems, extack);
5450                 if (ret)
5451                         return ERR_PTR(ret);
5452
5453                 num_elems++;
5454         }
5455
5456         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5457         if (!elems)
5458                 return ERR_PTR(-ENOMEM);
5459         elems->cnt = num_elems;
5460
5461         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5462                 elems->elem[i].data = nla_data(nl_elems);
5463                 elems->elem[i].len = nla_len(nl_elems);
5464                 i++;
5465         }
5466         return elems;
5467 }
5468
5469 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5470                                       struct cfg80211_he_bss_color *he_bss_color)
5471 {
5472         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5473         int err;
5474
5475         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5476                                he_bss_color_policy, NULL);
5477         if (err)
5478                 return err;
5479
5480         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5481                 return -EINVAL;
5482
5483         he_bss_color->color =
5484                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5485         he_bss_color->enabled =
5486                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5487         he_bss_color->partial =
5488                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5489
5490         return 0;
5491 }
5492
5493 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5494                                 struct nlattr *attrs[],
5495                                 struct cfg80211_beacon_data *bcn,
5496                                 struct netlink_ext_ack *extack)
5497 {
5498         bool haveinfo = false;
5499         int err;
5500
5501         memset(bcn, 0, sizeof(*bcn));
5502
5503         bcn->link_id = nl80211_link_id(attrs);
5504
5505         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5506                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5507                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5508                 if (!bcn->head_len)
5509                         return -EINVAL;
5510                 haveinfo = true;
5511         }
5512
5513         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5514                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5515                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5516                 haveinfo = true;
5517         }
5518
5519         if (!haveinfo)
5520                 return -EINVAL;
5521
5522         if (attrs[NL80211_ATTR_IE]) {
5523                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5524                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5525         }
5526
5527         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5528                 bcn->proberesp_ies =
5529                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5530                 bcn->proberesp_ies_len =
5531                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5532         }
5533
5534         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5535                 bcn->assocresp_ies =
5536                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5537                 bcn->assocresp_ies_len =
5538                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5539         }
5540
5541         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5542                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5543                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5544         }
5545
5546         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5547                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5548
5549                 err = nla_parse_nested_deprecated(tb,
5550                                                   NL80211_FTM_RESP_ATTR_MAX,
5551                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5552                                                   NULL, NULL);
5553                 if (err)
5554                         return err;
5555
5556                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5557                     wiphy_ext_feature_isset(&rdev->wiphy,
5558                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5559                         bcn->ftm_responder = 1;
5560                 else
5561                         return -EOPNOTSUPP;
5562
5563                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5564                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5565                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5566                 }
5567
5568                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5569                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5570                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5571                 }
5572         } else {
5573                 bcn->ftm_responder = -1;
5574         }
5575
5576         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5577                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5578                                                  &bcn->he_bss_color);
5579                 if (err)
5580                         return err;
5581                 bcn->he_bss_color_valid = true;
5582         }
5583
5584         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5585                 struct cfg80211_mbssid_elems *mbssid =
5586                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5587                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5588
5589                 if (IS_ERR(mbssid))
5590                         return PTR_ERR(mbssid);
5591
5592                 bcn->mbssid_ies = mbssid;
5593
5594                 if (bcn->mbssid_ies && attrs[NL80211_ATTR_EMA_RNR_ELEMS]) {
5595                         struct cfg80211_rnr_elems *rnr =
5596                                 nl80211_parse_rnr_elems(&rdev->wiphy,
5597                                                         attrs[NL80211_ATTR_EMA_RNR_ELEMS],
5598                                                         extack);
5599
5600                         if (IS_ERR(rnr))
5601                                 return PTR_ERR(rnr);
5602
5603                         if (rnr && rnr->cnt < bcn->mbssid_ies->cnt)
5604                                 return -EINVAL;
5605
5606                         bcn->rnr_ies = rnr;
5607                 }
5608         }
5609
5610         return 0;
5611 }
5612
5613 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5614                                     struct ieee80211_he_obss_pd *he_obss_pd)
5615 {
5616         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5617         int err;
5618
5619         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5620                                he_obss_pd_policy, NULL);
5621         if (err)
5622                 return err;
5623
5624         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5625                 return -EINVAL;
5626
5627         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5628
5629         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5630                 he_obss_pd->min_offset =
5631                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5632         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5633                 he_obss_pd->max_offset =
5634                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5635         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5636                 he_obss_pd->non_srg_max_offset =
5637                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5638
5639         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5640                 return -EINVAL;
5641
5642         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5643                 memcpy(he_obss_pd->bss_color_bitmap,
5644                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5645                        sizeof(he_obss_pd->bss_color_bitmap));
5646
5647         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5648                 memcpy(he_obss_pd->partial_bssid_bitmap,
5649                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5650                        sizeof(he_obss_pd->partial_bssid_bitmap));
5651
5652         he_obss_pd->enable = true;
5653
5654         return 0;
5655 }
5656
5657 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5658                                         struct nlattr *attrs,
5659                                         struct cfg80211_fils_discovery *fd)
5660 {
5661         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5662         int ret;
5663
5664         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5665                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5666                 return -EINVAL;
5667
5668         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5669                                NULL, NULL);
5670         if (ret)
5671                 return ret;
5672
5673         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] &&
5674             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] &&
5675             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) {
5676                 fd->update = true;
5677                 return 0;
5678         }
5679
5680         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5681             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5682             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5683                 return -EINVAL;
5684
5685         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5686         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5687         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5688         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5689         fd->update = true;
5690         return 0;
5691 }
5692
5693 static int
5694 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5695                                      struct nlattr *attrs,
5696                                      struct cfg80211_unsol_bcast_probe_resp *presp)
5697 {
5698         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5699         int ret;
5700
5701         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5702                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5703                 return -EINVAL;
5704
5705         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5706                                attrs, NULL, NULL);
5707         if (ret)
5708                 return ret;
5709
5710         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] &&
5711             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) {
5712                 presp->update = true;
5713                 return 0;
5714         }
5715
5716         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5717             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5718                 return -EINVAL;
5719
5720         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5721         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5722         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5723         presp->update = true;
5724         return 0;
5725 }
5726
5727 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5728                                             const struct element *rates)
5729 {
5730         int i;
5731
5732         if (!rates)
5733                 return;
5734
5735         for (i = 0; i < rates->datalen; i++) {
5736                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5737                         params->ht_required = true;
5738                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5739                         params->vht_required = true;
5740                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5741                         params->he_required = true;
5742                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5743                         params->sae_h2e_required = true;
5744         }
5745 }
5746
5747 /*
5748  * Since the nl80211 API didn't include, from the beginning, attributes about
5749  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5750  * benefit of drivers that rebuild IEs in the firmware.
5751  */
5752 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5753 {
5754         const struct cfg80211_beacon_data *bcn = &params->beacon;
5755         size_t ies_len = bcn->tail_len;
5756         const u8 *ies = bcn->tail;
5757         const struct element *rates;
5758         const struct element *cap;
5759
5760         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5761         nl80211_check_ap_rate_selectors(params, rates);
5762
5763         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5764         nl80211_check_ap_rate_selectors(params, rates);
5765
5766         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5767         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5768                 params->ht_cap = (void *)cap->data;
5769         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5770         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5771                 params->vht_cap = (void *)cap->data;
5772         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5773         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5774                 params->he_cap = (void *)(cap->data + 1);
5775         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5776         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5777                 params->he_oper = (void *)(cap->data + 1);
5778         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5779         if (cap) {
5780                 if (!cap->datalen)
5781                         return -EINVAL;
5782                 params->eht_cap = (void *)(cap->data + 1);
5783                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5784                                                 (const u8 *)params->eht_cap,
5785                                                 cap->datalen - 1, true))
5786                         return -EINVAL;
5787         }
5788         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5789         if (cap) {
5790                 if (!cap->datalen)
5791                         return -EINVAL;
5792                 params->eht_oper = (void *)(cap->data + 1);
5793                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5794                                                 cap->datalen - 1))
5795                         return -EINVAL;
5796         }
5797         return 0;
5798 }
5799
5800 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5801                                    struct cfg80211_ap_settings *params)
5802 {
5803         struct wireless_dev *wdev;
5804
5805         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5806                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5807                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5808                         continue;
5809
5810                 if (!wdev->u.ap.preset_chandef.chan)
5811                         continue;
5812
5813                 params->chandef = wdev->u.ap.preset_chandef;
5814                 return true;
5815         }
5816
5817         return false;
5818 }
5819
5820 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5821                                     enum nl80211_auth_type auth_type,
5822                                     enum nl80211_commands cmd)
5823 {
5824         if (auth_type > NL80211_AUTHTYPE_MAX)
5825                 return false;
5826
5827         switch (cmd) {
5828         case NL80211_CMD_AUTHENTICATE:
5829                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5830                     auth_type == NL80211_AUTHTYPE_SAE)
5831                         return false;
5832                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5833                                              NL80211_EXT_FEATURE_FILS_STA) &&
5834                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5835                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5836                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5837                         return false;
5838                 return true;
5839         case NL80211_CMD_CONNECT:
5840                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5841                     !wiphy_ext_feature_isset(&rdev->wiphy,
5842                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5843                     auth_type == NL80211_AUTHTYPE_SAE)
5844                         return false;
5845
5846                 /* FILS with SK PFS or PK not supported yet */
5847                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5848                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5849                         return false;
5850                 if (!wiphy_ext_feature_isset(
5851                             &rdev->wiphy,
5852                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5853                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5854                         return false;
5855                 return true;
5856         case NL80211_CMD_START_AP:
5857                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5858                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5859                     auth_type == NL80211_AUTHTYPE_SAE)
5860                         return false;
5861                 /* FILS not supported yet */
5862                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5863                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5864                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5865                         return false;
5866                 return true;
5867         default:
5868                 return false;
5869         }
5870 }
5871
5872 static void nl80211_send_ap_started(struct wireless_dev *wdev,
5873                                     unsigned int link_id)
5874 {
5875         struct wiphy *wiphy = wdev->wiphy;
5876         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
5877         struct sk_buff *msg;
5878         void *hdr;
5879
5880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5881         if (!msg)
5882                 return;
5883
5884         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_START_AP);
5885         if (!hdr)
5886                 goto out;
5887
5888         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
5889             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
5890             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
5891                               NL80211_ATTR_PAD) ||
5892             (wdev->u.ap.ssid_len &&
5893              nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
5894                      wdev->u.ap.ssid)) ||
5895             (wdev->valid_links &&
5896              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
5897                 goto out;
5898
5899         genlmsg_end(msg, hdr);
5900
5901         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
5902                                 NL80211_MCGRP_MLME, GFP_KERNEL);
5903         return;
5904 out:
5905         nlmsg_free(msg);
5906 }
5907
5908 static int nl80211_validate_ap_phy_operation(struct cfg80211_ap_settings *params)
5909 {
5910         struct ieee80211_channel *channel = params->chandef.chan;
5911
5912         if ((params->he_cap ||  params->he_oper) &&
5913             (channel->flags & IEEE80211_CHAN_NO_HE))
5914                 return -EOPNOTSUPP;
5915
5916         if ((params->eht_cap || params->eht_oper) &&
5917             (channel->flags & IEEE80211_CHAN_NO_EHT))
5918                 return -EOPNOTSUPP;
5919
5920         return 0;
5921 }
5922
5923 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5924 {
5925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5926         unsigned int link_id = nl80211_link_id(info->attrs);
5927         struct net_device *dev = info->user_ptr[1];
5928         struct wireless_dev *wdev = dev->ieee80211_ptr;
5929         struct cfg80211_ap_settings *params;
5930         int err;
5931
5932         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5933             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5934                 return -EOPNOTSUPP;
5935
5936         if (!rdev->ops->start_ap)
5937                 return -EOPNOTSUPP;
5938
5939         if (wdev->links[link_id].ap.beacon_interval)
5940                 return -EALREADY;
5941
5942         /* these are required for START_AP */
5943         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5944             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5945             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5946                 return -EINVAL;
5947
5948         params = kzalloc(sizeof(*params), GFP_KERNEL);
5949         if (!params)
5950                 return -ENOMEM;
5951
5952         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
5953                                    info->extack);
5954         if (err)
5955                 goto out;
5956
5957         params->beacon_interval =
5958                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5959         params->dtim_period =
5960                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5961
5962         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5963                                            params->beacon_interval);
5964         if (err)
5965                 goto out;
5966
5967         /*
5968          * In theory, some of these attributes should be required here
5969          * but since they were not used when the command was originally
5970          * added, keep them optional for old user space programs to let
5971          * them continue to work with drivers that do not need the
5972          * additional information -- drivers must check!
5973          */
5974         if (info->attrs[NL80211_ATTR_SSID]) {
5975                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5976                 params->ssid_len =
5977                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5978                 if (params->ssid_len == 0) {
5979                         err = -EINVAL;
5980                         goto out;
5981                 }
5982
5983                 if (wdev->u.ap.ssid_len &&
5984                     (wdev->u.ap.ssid_len != params->ssid_len ||
5985                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5986                         /* require identical SSID for MLO */
5987                         err = -EINVAL;
5988                         goto out;
5989                 }
5990         } else if (wdev->valid_links) {
5991                 /* require SSID for MLO */
5992                 err = -EINVAL;
5993                 goto out;
5994         }
5995
5996         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5997                 params->hidden_ssid = nla_get_u32(
5998                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5999
6000         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6001
6002         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6003                 params->auth_type = nla_get_u32(
6004                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
6005                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
6006                                              NL80211_CMD_START_AP)) {
6007                         err = -EINVAL;
6008                         goto out;
6009                 }
6010         } else
6011                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6012
6013         err = nl80211_crypto_settings(rdev, info, &params->crypto,
6014                                       NL80211_MAX_NR_CIPHER_SUITES);
6015         if (err)
6016                 goto out;
6017
6018         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
6019                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
6020                         err = -EOPNOTSUPP;
6021                         goto out;
6022                 }
6023                 params->inactivity_timeout = nla_get_u16(
6024                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
6025         }
6026
6027         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6028                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6029                         err = -EINVAL;
6030                         goto out;
6031                 }
6032                 params->p2p_ctwindow =
6033                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6034                 if (params->p2p_ctwindow != 0 &&
6035                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
6036                         err = -EINVAL;
6037                         goto out;
6038                 }
6039         }
6040
6041         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6042                 u8 tmp;
6043
6044                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6045                         err = -EINVAL;
6046                         goto out;
6047                 }
6048                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6049                 params->p2p_opp_ps = tmp;
6050                 if (params->p2p_opp_ps != 0 &&
6051                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
6052                         err = -EINVAL;
6053                         goto out;
6054                 }
6055         }
6056
6057         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6058                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
6059                 if (err)
6060                         goto out;
6061         } else if (wdev->valid_links) {
6062                 /* with MLD need to specify the channel configuration */
6063                 err = -EINVAL;
6064                 goto out;
6065         } else if (wdev->u.ap.preset_chandef.chan) {
6066                 params->chandef = wdev->u.ap.preset_chandef;
6067         } else if (!nl80211_get_ap_channel(rdev, params)) {
6068                 err = -EINVAL;
6069                 goto out;
6070         }
6071
6072         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
6073                 err = nl80211_parse_punct_bitmap(rdev, info,
6074                                                  &params->chandef,
6075                                                  &params->punct_bitmap);
6076                 if (err)
6077                         goto out;
6078         }
6079
6080         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
6081                                            wdev->iftype)) {
6082                 err = -EINVAL;
6083                 goto out;
6084         }
6085
6086         if (info->attrs[NL80211_ATTR_TX_RATES]) {
6087                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
6088                                                     NL80211_ATTR_TX_RATES,
6089                                                     &params->beacon_rate,
6090                                                     dev, false, link_id);
6091                 if (err)
6092                         goto out;
6093
6094                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
6095                                               &params->beacon_rate);
6096                 if (err)
6097                         goto out;
6098         }
6099
6100         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
6101                 params->smps_mode =
6102                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
6103                 switch (params->smps_mode) {
6104                 case NL80211_SMPS_OFF:
6105                         break;
6106                 case NL80211_SMPS_STATIC:
6107                         if (!(rdev->wiphy.features &
6108                               NL80211_FEATURE_STATIC_SMPS)) {
6109                                 err = -EINVAL;
6110                                 goto out;
6111                         }
6112                         break;
6113                 case NL80211_SMPS_DYNAMIC:
6114                         if (!(rdev->wiphy.features &
6115                               NL80211_FEATURE_DYNAMIC_SMPS)) {
6116                                 err = -EINVAL;
6117                                 goto out;
6118                         }
6119                         break;
6120                 default:
6121                         err = -EINVAL;
6122                         goto out;
6123                 }
6124         } else {
6125                 params->smps_mode = NL80211_SMPS_OFF;
6126         }
6127
6128         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
6129         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
6130                 err = -EOPNOTSUPP;
6131                 goto out;
6132         }
6133
6134         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
6135                 params->acl = parse_acl_data(&rdev->wiphy, info);
6136                 if (IS_ERR(params->acl)) {
6137                         err = PTR_ERR(params->acl);
6138                         params->acl = NULL;
6139                         goto out;
6140                 }
6141         }
6142
6143         params->twt_responder =
6144                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
6145
6146         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
6147                 err = nl80211_parse_he_obss_pd(
6148                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
6149                                         &params->he_obss_pd);
6150                 if (err)
6151                         goto out;
6152         }
6153
6154         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
6155                 err = nl80211_parse_fils_discovery(rdev,
6156                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6157                                                    &params->fils_discovery);
6158                 if (err)
6159                         goto out;
6160         }
6161
6162         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6163                 err = nl80211_parse_unsol_bcast_probe_resp(
6164                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6165                         &params->unsol_bcast_probe_resp);
6166                 if (err)
6167                         goto out;
6168         }
6169
6170         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6171                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6172                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6173                                                   &params->mbssid_config,
6174                                                   params->beacon.mbssid_ies ?
6175                                                         params->beacon.mbssid_ies->cnt :
6176                                                         0);
6177                 if (err)
6178                         goto out;
6179         }
6180
6181         if (!params->mbssid_config.ema && params->beacon.rnr_ies) {
6182                 err = -EINVAL;
6183                 goto out;
6184         }
6185
6186         err = nl80211_calculate_ap_params(params);
6187         if (err)
6188                 goto out;
6189
6190         err = nl80211_validate_ap_phy_operation(params);
6191         if (err)
6192                 goto out;
6193
6194         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6195                 params->flags = nla_get_u32(
6196                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6197         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6198                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6199
6200         if (wdev->conn_owner_nlportid &&
6201             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6202             wdev->conn_owner_nlportid != info->snd_portid) {
6203                 err = -EINVAL;
6204                 goto out;
6205         }
6206
6207         /* FIXME: validate MLO/link-id against driver capabilities */
6208
6209         err = rdev_start_ap(rdev, dev, params);
6210         if (!err) {
6211                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6212                 wdev->links[link_id].ap.chandef = params->chandef;
6213                 wdev->u.ap.ssid_len = params->ssid_len;
6214                 memcpy(wdev->u.ap.ssid, params->ssid,
6215                        params->ssid_len);
6216
6217                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6218                         wdev->conn_owner_nlportid = info->snd_portid;
6219
6220                 nl80211_send_ap_started(wdev, link_id);
6221         }
6222 out:
6223         kfree(params->acl);
6224         kfree(params->beacon.mbssid_ies);
6225         if (params->mbssid_config.tx_wdev &&
6226             params->mbssid_config.tx_wdev->netdev &&
6227             params->mbssid_config.tx_wdev->netdev != dev)
6228                 dev_put(params->mbssid_config.tx_wdev->netdev);
6229         kfree(params->beacon.rnr_ies);
6230         kfree(params);
6231
6232         return err;
6233 }
6234
6235 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6236 {
6237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6238         unsigned int link_id = nl80211_link_id(info->attrs);
6239         struct net_device *dev = info->user_ptr[1];
6240         struct wireless_dev *wdev = dev->ieee80211_ptr;
6241         struct cfg80211_ap_update *params;
6242         struct nlattr *attr;
6243         int err;
6244
6245         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6246             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6247                 return -EOPNOTSUPP;
6248
6249         if (!rdev->ops->change_beacon)
6250                 return -EOPNOTSUPP;
6251
6252         if (!wdev->links[link_id].ap.beacon_interval)
6253                 return -EINVAL;
6254
6255         params = kzalloc(sizeof(*params), GFP_KERNEL);
6256         if (!params)
6257                 return -ENOMEM;
6258
6259         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon,
6260                                    info->extack);
6261         if (err)
6262                 goto out;
6263
6264         attr = info->attrs[NL80211_ATTR_FILS_DISCOVERY];
6265         if (attr) {
6266                 err = nl80211_parse_fils_discovery(rdev, attr,
6267                                                    &params->fils_discovery);
6268                 if (err)
6269                         goto out;
6270         }
6271
6272         attr = info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP];
6273         if (attr) {
6274                 err = nl80211_parse_unsol_bcast_probe_resp(rdev, attr,
6275                                                            &params->unsol_bcast_probe_resp);
6276                 if (err)
6277                         goto out;
6278         }
6279
6280         err = rdev_change_beacon(rdev, dev, params);
6281
6282 out:
6283         kfree(params->beacon.mbssid_ies);
6284         kfree(params->beacon.rnr_ies);
6285         kfree(params);
6286         return err;
6287 }
6288
6289 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6290 {
6291         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6292         unsigned int link_id = nl80211_link_id(info->attrs);
6293         struct net_device *dev = info->user_ptr[1];
6294
6295         return cfg80211_stop_ap(rdev, dev, link_id, false);
6296 }
6297
6298 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6299         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6300         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6301         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6302         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6303         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6304         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6305 };
6306
6307 static int parse_station_flags(struct genl_info *info,
6308                                enum nl80211_iftype iftype,
6309                                struct station_parameters *params)
6310 {
6311         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6312         struct nlattr *nla;
6313         int flag;
6314
6315         /*
6316          * Try parsing the new attribute first so userspace
6317          * can specify both for older kernels.
6318          */
6319         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6320         if (nla) {
6321                 struct nl80211_sta_flag_update *sta_flags;
6322
6323                 sta_flags = nla_data(nla);
6324                 params->sta_flags_mask = sta_flags->mask;
6325                 params->sta_flags_set = sta_flags->set;
6326                 params->sta_flags_set &= params->sta_flags_mask;
6327                 if ((params->sta_flags_mask |
6328                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6329                         return -EINVAL;
6330                 return 0;
6331         }
6332
6333         /* if present, parse the old attribute */
6334
6335         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6336         if (!nla)
6337                 return 0;
6338
6339         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6340                 return -EINVAL;
6341
6342         /*
6343          * Only allow certain flags for interface types so that
6344          * other attributes are silently ignored. Remember that
6345          * this is backward compatibility code with old userspace
6346          * and shouldn't be hit in other cases anyway.
6347          */
6348         switch (iftype) {
6349         case NL80211_IFTYPE_AP:
6350         case NL80211_IFTYPE_AP_VLAN:
6351         case NL80211_IFTYPE_P2P_GO:
6352                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6353                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6354                                          BIT(NL80211_STA_FLAG_WME) |
6355                                          BIT(NL80211_STA_FLAG_MFP);
6356                 break;
6357         case NL80211_IFTYPE_P2P_CLIENT:
6358         case NL80211_IFTYPE_STATION:
6359                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6360                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6361                 break;
6362         case NL80211_IFTYPE_MESH_POINT:
6363                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6364                                          BIT(NL80211_STA_FLAG_MFP) |
6365                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6366                 break;
6367         default:
6368                 return -EINVAL;
6369         }
6370
6371         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6372                 if (flags[flag]) {
6373                         params->sta_flags_set |= (1<<flag);
6374
6375                         /* no longer support new API additions in old API */
6376                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6377                                 return -EINVAL;
6378                 }
6379         }
6380
6381         return 0;
6382 }
6383
6384 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6385 {
6386         struct nlattr *rate;
6387         u32 bitrate;
6388         u16 bitrate_compat;
6389         enum nl80211_rate_info rate_flg;
6390
6391         rate = nla_nest_start_noflag(msg, attr);
6392         if (!rate)
6393                 return false;
6394
6395         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6396         bitrate = cfg80211_calculate_bitrate(info);
6397         /* report 16-bit bitrate only if we can */
6398         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6399         if (bitrate > 0 &&
6400             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6401                 return false;
6402         if (bitrate_compat > 0 &&
6403             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6404                 return false;
6405
6406         switch (info->bw) {
6407         case RATE_INFO_BW_1:
6408                 rate_flg = NL80211_RATE_INFO_1_MHZ_WIDTH;
6409                 break;
6410         case RATE_INFO_BW_2:
6411                 rate_flg = NL80211_RATE_INFO_2_MHZ_WIDTH;
6412                 break;
6413         case RATE_INFO_BW_4:
6414                 rate_flg = NL80211_RATE_INFO_4_MHZ_WIDTH;
6415                 break;
6416         case RATE_INFO_BW_5:
6417                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6418                 break;
6419         case RATE_INFO_BW_8:
6420                 rate_flg = NL80211_RATE_INFO_8_MHZ_WIDTH;
6421                 break;
6422         case RATE_INFO_BW_10:
6423                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6424                 break;
6425         case RATE_INFO_BW_16:
6426                 rate_flg = NL80211_RATE_INFO_16_MHZ_WIDTH;
6427                 break;
6428         default:
6429                 WARN_ON(1);
6430                 fallthrough;
6431         case RATE_INFO_BW_20:
6432                 rate_flg = 0;
6433                 break;
6434         case RATE_INFO_BW_40:
6435                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6436                 break;
6437         case RATE_INFO_BW_80:
6438                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6439                 break;
6440         case RATE_INFO_BW_160:
6441                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6442                 break;
6443         case RATE_INFO_BW_HE_RU:
6444                 rate_flg = 0;
6445                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6446                 break;
6447         case RATE_INFO_BW_320:
6448                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6449                 break;
6450         case RATE_INFO_BW_EHT_RU:
6451                 rate_flg = 0;
6452                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6453                 break;
6454         }
6455
6456         if (rate_flg && nla_put_flag(msg, rate_flg))
6457                 return false;
6458
6459         if (info->flags & RATE_INFO_FLAGS_MCS) {
6460                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6461                         return false;
6462                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6463                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6464                         return false;
6465         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6466                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6467                         return false;
6468                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6469                         return false;
6470                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6471                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6472                         return false;
6473         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6474                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6475                         return false;
6476                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6477                         return false;
6478                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6479                         return false;
6480                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6481                         return false;
6482                 if (info->bw == RATE_INFO_BW_HE_RU &&
6483                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6484                                info->he_ru_alloc))
6485                         return false;
6486         } else if (info->flags & RATE_INFO_FLAGS_S1G_MCS) {
6487                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_MCS, info->mcs))
6488                         return false;
6489                 if (nla_put_u8(msg, NL80211_RATE_INFO_S1G_NSS, info->nss))
6490                         return false;
6491                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6492                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6493                         return false;
6494         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6495                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6496                         return false;
6497                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6498                         return false;
6499                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6500                         return false;
6501                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6502                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6503                                info->eht_ru_alloc))
6504                         return false;
6505         }
6506
6507         nla_nest_end(msg, rate);
6508         return true;
6509 }
6510
6511 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6512                                int id)
6513 {
6514         void *attr;
6515         int i = 0;
6516
6517         if (!mask)
6518                 return true;
6519
6520         attr = nla_nest_start_noflag(msg, id);
6521         if (!attr)
6522                 return false;
6523
6524         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6525                 if (!(mask & BIT(i)))
6526                         continue;
6527
6528                 if (nla_put_u8(msg, i, signal[i]))
6529                         return false;
6530         }
6531
6532         nla_nest_end(msg, attr);
6533
6534         return true;
6535 }
6536
6537 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6538                                 u32 seq, int flags,
6539                                 struct cfg80211_registered_device *rdev,
6540                                 struct net_device *dev,
6541                                 const u8 *mac_addr, struct station_info *sinfo)
6542 {
6543         void *hdr;
6544         struct nlattr *sinfoattr, *bss_param;
6545
6546         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6547         if (!hdr) {
6548                 cfg80211_sinfo_release_content(sinfo);
6549                 return -1;
6550         }
6551
6552         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6554             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6555                 goto nla_put_failure;
6556
6557         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6558         if (!sinfoattr)
6559                 goto nla_put_failure;
6560
6561 #define PUT_SINFO(attr, memb, type) do {                                \
6562         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6563         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6564             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6565                              sinfo->memb))                              \
6566                 goto nla_put_failure;                                   \
6567         } while (0)
6568 #define PUT_SINFO_U64(attr, memb) do {                                  \
6569         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6570             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6571                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6572                 goto nla_put_failure;                                   \
6573         } while (0)
6574
6575         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6576         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6577         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6578
6579         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6580                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6581             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6582                         (u32)sinfo->rx_bytes))
6583                 goto nla_put_failure;
6584
6585         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6586                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6587             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6588                         (u32)sinfo->tx_bytes))
6589                 goto nla_put_failure;
6590
6591         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6592         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6593         PUT_SINFO(LLID, llid, u16);
6594         PUT_SINFO(PLID, plid, u16);
6595         PUT_SINFO(PLINK_STATE, plink_state, u8);
6596         PUT_SINFO_U64(RX_DURATION, rx_duration);
6597         PUT_SINFO_U64(TX_DURATION, tx_duration);
6598
6599         if (wiphy_ext_feature_isset(&rdev->wiphy,
6600                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6601                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6602
6603         switch (rdev->wiphy.signal_type) {
6604         case CFG80211_SIGNAL_TYPE_MBM:
6605                 PUT_SINFO(SIGNAL, signal, u8);
6606                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6607                 break;
6608         default:
6609                 break;
6610         }
6611         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6612                 if (!nl80211_put_signal(msg, sinfo->chains,
6613                                         sinfo->chain_signal,
6614                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6615                         goto nla_put_failure;
6616         }
6617         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6618                 if (!nl80211_put_signal(msg, sinfo->chains,
6619                                         sinfo->chain_signal_avg,
6620                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6621                         goto nla_put_failure;
6622         }
6623         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6624                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6625                                           NL80211_STA_INFO_TX_BITRATE))
6626                         goto nla_put_failure;
6627         }
6628         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6629                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6630                                           NL80211_STA_INFO_RX_BITRATE))
6631                         goto nla_put_failure;
6632         }
6633
6634         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6635         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6636         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6637         PUT_SINFO(TX_FAILED, tx_failed, u32);
6638         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6639         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6640         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6641         PUT_SINFO(LOCAL_PM, local_pm, u32);
6642         PUT_SINFO(PEER_PM, peer_pm, u32);
6643         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6644         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6645         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6646
6647         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6648                 bss_param = nla_nest_start_noflag(msg,
6649                                                   NL80211_STA_INFO_BSS_PARAM);
6650                 if (!bss_param)
6651                         goto nla_put_failure;
6652
6653                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6654                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6655                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6656                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6657                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6658                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6659                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6660                                sinfo->bss_param.dtim_period) ||
6661                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6662                                 sinfo->bss_param.beacon_interval))
6663                         goto nla_put_failure;
6664
6665                 nla_nest_end(msg, bss_param);
6666         }
6667         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6668             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6669                     sizeof(struct nl80211_sta_flag_update),
6670                     &sinfo->sta_flags))
6671                 goto nla_put_failure;
6672
6673         PUT_SINFO_U64(T_OFFSET, t_offset);
6674         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6675         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6676         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6677         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6678         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6679         if (wiphy_ext_feature_isset(&rdev->wiphy,
6680                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6681                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6682                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6683         }
6684
6685 #undef PUT_SINFO
6686 #undef PUT_SINFO_U64
6687
6688         if (sinfo->pertid) {
6689                 struct nlattr *tidsattr;
6690                 int tid;
6691
6692                 tidsattr = nla_nest_start_noflag(msg,
6693                                                  NL80211_STA_INFO_TID_STATS);
6694                 if (!tidsattr)
6695                         goto nla_put_failure;
6696
6697                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6698                         struct cfg80211_tid_stats *tidstats;
6699                         struct nlattr *tidattr;
6700
6701                         tidstats = &sinfo->pertid[tid];
6702
6703                         if (!tidstats->filled)
6704                                 continue;
6705
6706                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6707                         if (!tidattr)
6708                                 goto nla_put_failure;
6709
6710 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6711         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6712             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6713                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6714                 goto nla_put_failure;                                   \
6715         } while (0)
6716
6717                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6718                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6719                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6720                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6721
6722 #undef PUT_TIDVAL_U64
6723                         if ((tidstats->filled &
6724                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6725                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6726                                                    NL80211_TID_STATS_TXQ_STATS))
6727                                 goto nla_put_failure;
6728
6729                         nla_nest_end(msg, tidattr);
6730                 }
6731
6732                 nla_nest_end(msg, tidsattr);
6733         }
6734
6735         nla_nest_end(msg, sinfoattr);
6736
6737         if (sinfo->assoc_req_ies_len &&
6738             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6739                     sinfo->assoc_req_ies))
6740                 goto nla_put_failure;
6741
6742         if (sinfo->assoc_resp_ies_len &&
6743             nla_put(msg, NL80211_ATTR_RESP_IE, sinfo->assoc_resp_ies_len,
6744                     sinfo->assoc_resp_ies))
6745                 goto nla_put_failure;
6746
6747         if (sinfo->mlo_params_valid) {
6748                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
6749                                sinfo->assoc_link_id))
6750                         goto nla_put_failure;
6751
6752                 if (!is_zero_ether_addr(sinfo->mld_addr) &&
6753                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
6754                             sinfo->mld_addr))
6755                         goto nla_put_failure;
6756         }
6757
6758         cfg80211_sinfo_release_content(sinfo);
6759         genlmsg_end(msg, hdr);
6760         return 0;
6761
6762  nla_put_failure:
6763         cfg80211_sinfo_release_content(sinfo);
6764         genlmsg_cancel(msg, hdr);
6765         return -EMSGSIZE;
6766 }
6767
6768 static int nl80211_dump_station(struct sk_buff *skb,
6769                                 struct netlink_callback *cb)
6770 {
6771         struct station_info sinfo;
6772         struct cfg80211_registered_device *rdev;
6773         struct wireless_dev *wdev;
6774         u8 mac_addr[ETH_ALEN];
6775         int sta_idx = cb->args[2];
6776         int err;
6777
6778         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6779         if (err)
6780                 return err;
6781         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6782         __acquire(&rdev->wiphy.mtx);
6783
6784         if (!wdev->netdev) {
6785                 err = -EINVAL;
6786                 goto out_err;
6787         }
6788
6789         if (!rdev->ops->dump_station) {
6790                 err = -EOPNOTSUPP;
6791                 goto out_err;
6792         }
6793
6794         while (1) {
6795                 memset(&sinfo, 0, sizeof(sinfo));
6796                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6797                                         mac_addr, &sinfo);
6798                 if (err == -ENOENT)
6799                         break;
6800                 if (err)
6801                         goto out_err;
6802
6803                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6804                                 NETLINK_CB(cb->skb).portid,
6805                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6806                                 rdev, wdev->netdev, mac_addr,
6807                                 &sinfo) < 0)
6808                         goto out;
6809
6810                 sta_idx++;
6811         }
6812
6813  out:
6814         cb->args[2] = sta_idx;
6815         err = skb->len;
6816  out_err:
6817         wiphy_unlock(&rdev->wiphy);
6818
6819         return err;
6820 }
6821
6822 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6823 {
6824         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6825         struct net_device *dev = info->user_ptr[1];
6826         struct station_info sinfo;
6827         struct sk_buff *msg;
6828         u8 *mac_addr = NULL;
6829         int err;
6830
6831         memset(&sinfo, 0, sizeof(sinfo));
6832
6833         if (!info->attrs[NL80211_ATTR_MAC])
6834                 return -EINVAL;
6835
6836         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6837
6838         if (!rdev->ops->get_station)
6839                 return -EOPNOTSUPP;
6840
6841         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6842         if (err)
6843                 return err;
6844
6845         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6846         if (!msg) {
6847                 cfg80211_sinfo_release_content(&sinfo);
6848                 return -ENOMEM;
6849         }
6850
6851         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6852                                  info->snd_portid, info->snd_seq, 0,
6853                                  rdev, dev, mac_addr, &sinfo) < 0) {
6854                 nlmsg_free(msg);
6855                 return -ENOBUFS;
6856         }
6857
6858         return genlmsg_reply(msg, info);
6859 }
6860
6861 int cfg80211_check_station_change(struct wiphy *wiphy,
6862                                   struct station_parameters *params,
6863                                   enum cfg80211_station_type statype)
6864 {
6865         if (params->listen_interval != -1 &&
6866             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6867                 return -EINVAL;
6868
6869         if (params->support_p2p_ps != -1 &&
6870             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6871                 return -EINVAL;
6872
6873         if (params->aid &&
6874             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6875             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6876                 return -EINVAL;
6877
6878         /* When you run into this, adjust the code below for the new flag */
6879         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6880
6881         switch (statype) {
6882         case CFG80211_STA_MESH_PEER_KERNEL:
6883         case CFG80211_STA_MESH_PEER_USER:
6884                 /*
6885                  * No ignoring the TDLS flag here -- the userspace mesh
6886                  * code doesn't have the bug of including TDLS in the
6887                  * mask everywhere.
6888                  */
6889                 if (params->sta_flags_mask &
6890                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6891                                   BIT(NL80211_STA_FLAG_MFP) |
6892                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6893                         return -EINVAL;
6894                 break;
6895         case CFG80211_STA_TDLS_PEER_SETUP:
6896         case CFG80211_STA_TDLS_PEER_ACTIVE:
6897                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6898                         return -EINVAL;
6899                 /* ignore since it can't change */
6900                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6901                 break;
6902         default:
6903                 /* disallow mesh-specific things */
6904                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6905                         return -EINVAL;
6906                 if (params->local_pm)
6907                         return -EINVAL;
6908                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6909                         return -EINVAL;
6910         }
6911
6912         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6913             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6914                 /* TDLS can't be set, ... */
6915                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6916                         return -EINVAL;
6917                 /*
6918                  * ... but don't bother the driver with it. This works around
6919                  * a hostapd/wpa_supplicant issue -- it always includes the
6920                  * TLDS_PEER flag in the mask even for AP mode.
6921                  */
6922                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6923         }
6924
6925         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6926             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6927                 /* reject other things that can't change */
6928                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6929                         return -EINVAL;
6930                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6931                         return -EINVAL;
6932                 if (params->link_sta_params.supported_rates)
6933                         return -EINVAL;
6934                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6935                     params->link_sta_params.vht_capa ||
6936                     params->link_sta_params.he_capa ||
6937                     params->link_sta_params.eht_capa)
6938                         return -EINVAL;
6939         }
6940
6941         if (statype != CFG80211_STA_AP_CLIENT &&
6942             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6943                 if (params->vlan)
6944                         return -EINVAL;
6945         }
6946
6947         switch (statype) {
6948         case CFG80211_STA_AP_MLME_CLIENT:
6949                 /* Use this only for authorizing/unauthorizing a station */
6950                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6951                         return -EOPNOTSUPP;
6952                 break;
6953         case CFG80211_STA_AP_CLIENT:
6954         case CFG80211_STA_AP_CLIENT_UNASSOC:
6955                 /* accept only the listed bits */
6956                 if (params->sta_flags_mask &
6957                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6958                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6959                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6960                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6961                                   BIT(NL80211_STA_FLAG_WME) |
6962                                   BIT(NL80211_STA_FLAG_MFP)))
6963                         return -EINVAL;
6964
6965                 /* but authenticated/associated only if driver handles it */
6966                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6967                     params->sta_flags_mask &
6968                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6969                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6970                         return -EINVAL;
6971                 break;
6972         case CFG80211_STA_IBSS:
6973         case CFG80211_STA_AP_STA:
6974                 /* reject any changes other than AUTHORIZED */
6975                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6976                         return -EINVAL;
6977                 break;
6978         case CFG80211_STA_TDLS_PEER_SETUP:
6979                 /* reject any changes other than AUTHORIZED or WME */
6980                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6981                                                BIT(NL80211_STA_FLAG_WME)))
6982                         return -EINVAL;
6983                 /* force (at least) rates when authorizing */
6984                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6985                     !params->link_sta_params.supported_rates)
6986                         return -EINVAL;
6987                 break;
6988         case CFG80211_STA_TDLS_PEER_ACTIVE:
6989                 /* reject any changes */
6990                 return -EINVAL;
6991         case CFG80211_STA_MESH_PEER_KERNEL:
6992                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6993                         return -EINVAL;
6994                 break;
6995         case CFG80211_STA_MESH_PEER_USER:
6996                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6997                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6998                         return -EINVAL;
6999                 break;
7000         }
7001
7002         /*
7003          * Older kernel versions ignored this attribute entirely, so don't
7004          * reject attempts to update it but mark it as unused instead so the
7005          * driver won't look at the data.
7006          */
7007         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
7008             statype != CFG80211_STA_TDLS_PEER_SETUP)
7009                 params->link_sta_params.opmode_notif_used = false;
7010
7011         return 0;
7012 }
7013 EXPORT_SYMBOL(cfg80211_check_station_change);
7014
7015 /*
7016  * Get vlan interface making sure it is running and on the right wiphy.
7017  */
7018 static struct net_device *get_vlan(struct genl_info *info,
7019                                    struct cfg80211_registered_device *rdev)
7020 {
7021         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
7022         struct net_device *v;
7023         int ret;
7024
7025         if (!vlanattr)
7026                 return NULL;
7027
7028         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
7029         if (!v)
7030                 return ERR_PTR(-ENODEV);
7031
7032         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
7033                 ret = -EINVAL;
7034                 goto error;
7035         }
7036
7037         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
7038             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7039             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
7040                 ret = -EINVAL;
7041                 goto error;
7042         }
7043
7044         if (!netif_running(v)) {
7045                 ret = -ENETDOWN;
7046                 goto error;
7047         }
7048
7049         return v;
7050  error:
7051         dev_put(v);
7052         return ERR_PTR(ret);
7053 }
7054
7055 static int nl80211_parse_sta_wme(struct genl_info *info,
7056                                  struct station_parameters *params)
7057 {
7058         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
7059         struct nlattr *nla;
7060         int err;
7061
7062         /* parse WME attributes if present */
7063         if (!info->attrs[NL80211_ATTR_STA_WME])
7064                 return 0;
7065
7066         nla = info->attrs[NL80211_ATTR_STA_WME];
7067         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
7068                                           nl80211_sta_wme_policy,
7069                                           info->extack);
7070         if (err)
7071                 return err;
7072
7073         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
7074                 params->uapsd_queues = nla_get_u8(
7075                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
7076         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
7077                 return -EINVAL;
7078
7079         if (tb[NL80211_STA_WME_MAX_SP])
7080                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
7081
7082         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
7083                 return -EINVAL;
7084
7085         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
7086
7087         return 0;
7088 }
7089
7090 static int nl80211_parse_sta_channel_info(struct genl_info *info,
7091                                       struct station_parameters *params)
7092 {
7093         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
7094                 params->supported_channels =
7095                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7096                 params->supported_channels_len =
7097                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
7098                 /*
7099                  * Need to include at least one (first channel, number of
7100                  * channels) tuple for each subband (checked in policy),
7101                  * and must have proper tuples for the rest of the data as well.
7102                  */
7103                 if (params->supported_channels_len % 2)
7104                         return -EINVAL;
7105         }
7106
7107         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
7108                 params->supported_oper_classes =
7109                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7110                 params->supported_oper_classes_len =
7111                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
7112         }
7113         return 0;
7114 }
7115
7116 static int nl80211_set_station_tdls(struct genl_info *info,
7117                                     struct station_parameters *params)
7118 {
7119         int err;
7120         /* Dummy STA entry gets updated once the peer capabilities are known */
7121         if (info->attrs[NL80211_ATTR_PEER_AID])
7122                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7123         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7124                 params->link_sta_params.ht_capa =
7125                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7126         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7127                 params->link_sta_params.vht_capa =
7128                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7129         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7130                 params->link_sta_params.he_capa =
7131                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7132                 params->link_sta_params.he_capa_len =
7133                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7134
7135                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7136                         params->link_sta_params.eht_capa =
7137                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7138                         params->link_sta_params.eht_capa_len =
7139                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7140
7141                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
7142                                                         (const u8 *)params->link_sta_params.eht_capa,
7143                                                         params->link_sta_params.eht_capa_len,
7144                                                         false))
7145                                 return -EINVAL;
7146                 }
7147         }
7148
7149         err = nl80211_parse_sta_channel_info(info, params);
7150         if (err)
7151                 return err;
7152
7153         return nl80211_parse_sta_wme(info, params);
7154 }
7155
7156 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
7157                                              struct sta_txpwr *txpwr,
7158                                              bool *txpwr_set)
7159 {
7160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7161         int idx;
7162
7163         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
7164                 if (!rdev->ops->set_tx_power ||
7165                     !wiphy_ext_feature_isset(&rdev->wiphy,
7166                                          NL80211_EXT_FEATURE_STA_TX_PWR))
7167                         return -EOPNOTSUPP;
7168
7169                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
7170                 txpwr->type = nla_get_u8(info->attrs[idx]);
7171
7172                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
7173                         idx = NL80211_ATTR_STA_TX_POWER;
7174
7175                         if (info->attrs[idx])
7176                                 txpwr->power = nla_get_s16(info->attrs[idx]);
7177                         else
7178                                 return -EINVAL;
7179                 }
7180
7181                 *txpwr_set = true;
7182         } else {
7183                 *txpwr_set = false;
7184         }
7185
7186         return 0;
7187 }
7188
7189 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
7190 {
7191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7192         struct net_device *dev = info->user_ptr[1];
7193         struct station_parameters params;
7194         u8 *mac_addr;
7195         int err;
7196
7197         memset(&params, 0, sizeof(params));
7198
7199         if (!rdev->ops->change_station)
7200                 return -EOPNOTSUPP;
7201
7202         /*
7203          * AID and listen_interval properties can be set only for unassociated
7204          * station. Include these parameters here and will check them in
7205          * cfg80211_check_station_change().
7206          */
7207         if (info->attrs[NL80211_ATTR_STA_AID])
7208                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7209
7210         if (info->attrs[NL80211_ATTR_VLAN_ID])
7211                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7212
7213         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7214                 params.listen_interval =
7215                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7216         else
7217                 params.listen_interval = -1;
7218
7219         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
7220                 params.support_p2p_ps =
7221                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7222         else
7223                 params.support_p2p_ps = -1;
7224
7225         if (!info->attrs[NL80211_ATTR_MAC])
7226                 return -EINVAL;
7227
7228         params.link_sta_params.link_id =
7229                 nl80211_link_id_or_invalid(info->attrs);
7230
7231         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7232                 /* If MLD_ADDR attribute is set then this is an MLD station
7233                  * and the MLD_ADDR attribute holds the MLD address and the
7234                  * MAC attribute holds for the LINK address.
7235                  * In that case, the link_id is also expected to be valid.
7236                  */
7237                 if (params.link_sta_params.link_id < 0)
7238                         return -EINVAL;
7239
7240                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7241                 params.link_sta_params.mld_mac = mac_addr;
7242                 params.link_sta_params.link_mac =
7243                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7244                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7245                         return -EINVAL;
7246         } else {
7247                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7248         }
7249
7250
7251         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7252                 params.link_sta_params.supported_rates =
7253                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7254                 params.link_sta_params.supported_rates_len =
7255                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7256         }
7257
7258         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7259                 params.capability =
7260                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7261                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7262         }
7263
7264         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7265                 params.ext_capab =
7266                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7267                 params.ext_capab_len =
7268                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7269         }
7270
7271         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7272                 return -EINVAL;
7273
7274         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7275                 params.plink_action =
7276                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7277
7278         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7279                 params.plink_state =
7280                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7281                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7282                         params.peer_aid = nla_get_u16(
7283                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7284                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7285         }
7286
7287         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7288                 params.local_pm = nla_get_u32(
7289                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7290
7291         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7292                 params.link_sta_params.opmode_notif_used = true;
7293                 params.link_sta_params.opmode_notif =
7294                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7295         }
7296
7297         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7298                 params.link_sta_params.he_6ghz_capa =
7299                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7300
7301         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7302                 params.airtime_weight =
7303                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7304
7305         if (params.airtime_weight &&
7306             !wiphy_ext_feature_isset(&rdev->wiphy,
7307                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7308                 return -EOPNOTSUPP;
7309
7310         err = nl80211_parse_sta_txpower_setting(info,
7311                                                 &params.link_sta_params.txpwr,
7312                                                 &params.link_sta_params.txpwr_set);
7313         if (err)
7314                 return err;
7315
7316         /* Include parameters for TDLS peer (will check later) */
7317         err = nl80211_set_station_tdls(info, &params);
7318         if (err)
7319                 return err;
7320
7321         params.vlan = get_vlan(info, rdev);
7322         if (IS_ERR(params.vlan))
7323                 return PTR_ERR(params.vlan);
7324
7325         switch (dev->ieee80211_ptr->iftype) {
7326         case NL80211_IFTYPE_AP:
7327         case NL80211_IFTYPE_AP_VLAN:
7328         case NL80211_IFTYPE_P2P_GO:
7329         case NL80211_IFTYPE_P2P_CLIENT:
7330         case NL80211_IFTYPE_STATION:
7331         case NL80211_IFTYPE_ADHOC:
7332         case NL80211_IFTYPE_MESH_POINT:
7333                 break;
7334         default:
7335                 err = -EOPNOTSUPP;
7336                 goto out_put_vlan;
7337         }
7338
7339         /* driver will call cfg80211_check_station_change() */
7340         err = rdev_change_station(rdev, dev, mac_addr, &params);
7341
7342  out_put_vlan:
7343         dev_put(params.vlan);
7344
7345         return err;
7346 }
7347
7348 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7349 {
7350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7351         int err;
7352         struct net_device *dev = info->user_ptr[1];
7353         struct wireless_dev *wdev = dev->ieee80211_ptr;
7354         struct station_parameters params;
7355         u8 *mac_addr = NULL;
7356         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7357                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7358
7359         memset(&params, 0, sizeof(params));
7360
7361         if (!rdev->ops->add_station)
7362                 return -EOPNOTSUPP;
7363
7364         if (!info->attrs[NL80211_ATTR_MAC])
7365                 return -EINVAL;
7366
7367         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7368                 return -EINVAL;
7369
7370         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7371                 return -EINVAL;
7372
7373         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7374             !info->attrs[NL80211_ATTR_PEER_AID])
7375                 return -EINVAL;
7376
7377         params.link_sta_params.link_id =
7378                 nl80211_link_id_or_invalid(info->attrs);
7379
7380         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7381                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7382                 params.link_sta_params.mld_mac = mac_addr;
7383                 params.link_sta_params.link_mac =
7384                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7385                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7386                         return -EINVAL;
7387         } else {
7388                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7389         }
7390
7391         params.link_sta_params.supported_rates =
7392                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7393         params.link_sta_params.supported_rates_len =
7394                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7395         params.listen_interval =
7396                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7397
7398         if (info->attrs[NL80211_ATTR_VLAN_ID])
7399                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7400
7401         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7402                 params.support_p2p_ps =
7403                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7404         } else {
7405                 /*
7406                  * if not specified, assume it's supported for P2P GO interface,
7407                  * and is NOT supported for AP interface
7408                  */
7409                 params.support_p2p_ps =
7410                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7411         }
7412
7413         if (info->attrs[NL80211_ATTR_PEER_AID])
7414                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7415         else
7416                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7417
7418         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7419                 params.capability =
7420                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7421                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7422         }
7423
7424         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7425                 params.ext_capab =
7426                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7427                 params.ext_capab_len =
7428                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7429         }
7430
7431         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7432                 params.link_sta_params.ht_capa =
7433                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7434
7435         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7436                 params.link_sta_params.vht_capa =
7437                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7438
7439         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7440                 params.link_sta_params.he_capa =
7441                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7442                 params.link_sta_params.he_capa_len =
7443                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7444
7445                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7446                         params.link_sta_params.eht_capa =
7447                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7448                         params.link_sta_params.eht_capa_len =
7449                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7450
7451                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7452                                                         (const u8 *)params.link_sta_params.eht_capa,
7453                                                         params.link_sta_params.eht_capa_len,
7454                                                         false))
7455                                 return -EINVAL;
7456                 }
7457         }
7458
7459         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7460                 params.link_sta_params.he_6ghz_capa =
7461                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7462
7463         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7464                 params.link_sta_params.opmode_notif_used = true;
7465                 params.link_sta_params.opmode_notif =
7466                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7467         }
7468
7469         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7470                 params.plink_action =
7471                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7472
7473         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7474                 params.airtime_weight =
7475                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7476
7477         if (params.airtime_weight &&
7478             !wiphy_ext_feature_isset(&rdev->wiphy,
7479                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7480                 return -EOPNOTSUPP;
7481
7482         err = nl80211_parse_sta_txpower_setting(info,
7483                                                 &params.link_sta_params.txpwr,
7484                                                 &params.link_sta_params.txpwr_set);
7485         if (err)
7486                 return err;
7487
7488         err = nl80211_parse_sta_channel_info(info, &params);
7489         if (err)
7490                 return err;
7491
7492         err = nl80211_parse_sta_wme(info, &params);
7493         if (err)
7494                 return err;
7495
7496         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7497                 return -EINVAL;
7498
7499         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7500          * as userspace might just pass through the capabilities from the IEs
7501          * directly, rather than enforcing this restriction and returning an
7502          * error in this case.
7503          */
7504         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7505                 params.link_sta_params.ht_capa = NULL;
7506                 params.link_sta_params.vht_capa = NULL;
7507
7508                 /* HE and EHT require WME */
7509                 if (params.link_sta_params.he_capa_len ||
7510                     params.link_sta_params.he_6ghz_capa ||
7511                     params.link_sta_params.eht_capa_len)
7512                         return -EINVAL;
7513         }
7514
7515         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7516         if (params.link_sta_params.he_6ghz_capa &&
7517             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7518                 return -EINVAL;
7519
7520         /* When you run into this, adjust the code below for the new flag */
7521         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7522
7523         switch (dev->ieee80211_ptr->iftype) {
7524         case NL80211_IFTYPE_AP:
7525         case NL80211_IFTYPE_AP_VLAN:
7526         case NL80211_IFTYPE_P2P_GO:
7527                 /* ignore WME attributes if iface/sta is not capable */
7528                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7529                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7530                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7531
7532                 /* TDLS peers cannot be added */
7533                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7534                     info->attrs[NL80211_ATTR_PEER_AID])
7535                         return -EINVAL;
7536                 /* but don't bother the driver with it */
7537                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7538
7539                 /* allow authenticated/associated only if driver handles it */
7540                 if (!(rdev->wiphy.features &
7541                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7542                     params.sta_flags_mask & auth_assoc)
7543                         return -EINVAL;
7544
7545                 /* Older userspace, or userspace wanting to be compatible with
7546                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7547                  * and assoc flags in the mask, but assumes the station will be
7548                  * added as associated anyway since this was the required driver
7549                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7550                  * introduced.
7551                  * In order to not bother drivers with this quirk in the API
7552                  * set the flags in both the mask and set for new stations in
7553                  * this case.
7554                  */
7555                 if (!(params.sta_flags_mask & auth_assoc)) {
7556                         params.sta_flags_mask |= auth_assoc;
7557                         params.sta_flags_set |= auth_assoc;
7558                 }
7559
7560                 /* must be last in here for error handling */
7561                 params.vlan = get_vlan(info, rdev);
7562                 if (IS_ERR(params.vlan))
7563                         return PTR_ERR(params.vlan);
7564                 break;
7565         case NL80211_IFTYPE_MESH_POINT:
7566                 /* ignore uAPSD data */
7567                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7568
7569                 /* associated is disallowed */
7570                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7571                         return -EINVAL;
7572                 /* TDLS peers cannot be added */
7573                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7574                     info->attrs[NL80211_ATTR_PEER_AID])
7575                         return -EINVAL;
7576                 break;
7577         case NL80211_IFTYPE_STATION:
7578         case NL80211_IFTYPE_P2P_CLIENT:
7579                 /* ignore uAPSD data */
7580                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7581
7582                 /* these are disallowed */
7583                 if (params.sta_flags_mask &
7584                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7585                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7586                         return -EINVAL;
7587                 /* Only TDLS peers can be added */
7588                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7589                         return -EINVAL;
7590                 /* Can only add if TDLS ... */
7591                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7592                         return -EOPNOTSUPP;
7593                 /* ... with external setup is supported */
7594                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7595                         return -EOPNOTSUPP;
7596                 /*
7597                  * Older wpa_supplicant versions always mark the TDLS peer
7598                  * as authorized, but it shouldn't yet be.
7599                  */
7600                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7601                 break;
7602         default:
7603                 return -EOPNOTSUPP;
7604         }
7605
7606         /* be aware of params.vlan when changing code here */
7607
7608         if (wdev->valid_links) {
7609                 if (params.link_sta_params.link_id < 0) {
7610                         err = -EINVAL;
7611                         goto out;
7612                 }
7613                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7614                         err = -ENOLINK;
7615                         goto out;
7616                 }
7617         } else {
7618                 if (params.link_sta_params.link_id >= 0) {
7619                         err = -EINVAL;
7620                         goto out;
7621                 }
7622         }
7623         err = rdev_add_station(rdev, dev, mac_addr, &params);
7624 out:
7625         dev_put(params.vlan);
7626         return err;
7627 }
7628
7629 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7630 {
7631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7632         struct net_device *dev = info->user_ptr[1];
7633         struct station_del_parameters params;
7634
7635         memset(&params, 0, sizeof(params));
7636
7637         if (info->attrs[NL80211_ATTR_MAC])
7638                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7639
7640         switch (dev->ieee80211_ptr->iftype) {
7641         case NL80211_IFTYPE_AP:
7642         case NL80211_IFTYPE_AP_VLAN:
7643         case NL80211_IFTYPE_MESH_POINT:
7644         case NL80211_IFTYPE_P2P_GO:
7645                 /* always accept these */
7646                 break;
7647         case NL80211_IFTYPE_ADHOC:
7648                 /* conditionally accept */
7649                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7650                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7651                         break;
7652                 return -EINVAL;
7653         default:
7654                 return -EINVAL;
7655         }
7656
7657         if (!rdev->ops->del_station)
7658                 return -EOPNOTSUPP;
7659
7660         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7661                 params.subtype =
7662                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7663                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7664                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7665                         return -EINVAL;
7666         } else {
7667                 /* Default to Deauthentication frame */
7668                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7669         }
7670
7671         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7672                 params.reason_code =
7673                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7674                 if (params.reason_code == 0)
7675                         return -EINVAL; /* 0 is reserved */
7676         } else {
7677                 /* Default to reason code 2 */
7678                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7679         }
7680
7681         return rdev_del_station(rdev, dev, &params);
7682 }
7683
7684 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7685                                 int flags, struct net_device *dev,
7686                                 u8 *dst, u8 *next_hop,
7687                                 struct mpath_info *pinfo)
7688 {
7689         void *hdr;
7690         struct nlattr *pinfoattr;
7691
7692         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7693         if (!hdr)
7694                 return -1;
7695
7696         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7697             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7698             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7699             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7700                 goto nla_put_failure;
7701
7702         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7703         if (!pinfoattr)
7704                 goto nla_put_failure;
7705         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7706             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7707                         pinfo->frame_qlen))
7708                 goto nla_put_failure;
7709         if (((pinfo->filled & MPATH_INFO_SN) &&
7710              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7711             ((pinfo->filled & MPATH_INFO_METRIC) &&
7712              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7713                          pinfo->metric)) ||
7714             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7715              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7716                          pinfo->exptime)) ||
7717             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7718              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7719                         pinfo->flags)) ||
7720             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7721              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7722                          pinfo->discovery_timeout)) ||
7723             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7724              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7725                         pinfo->discovery_retries)) ||
7726             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7727              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7728                         pinfo->hop_count)) ||
7729             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7730              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7731                          pinfo->path_change_count)))
7732                 goto nla_put_failure;
7733
7734         nla_nest_end(msg, pinfoattr);
7735
7736         genlmsg_end(msg, hdr);
7737         return 0;
7738
7739  nla_put_failure:
7740         genlmsg_cancel(msg, hdr);
7741         return -EMSGSIZE;
7742 }
7743
7744 static int nl80211_dump_mpath(struct sk_buff *skb,
7745                               struct netlink_callback *cb)
7746 {
7747         struct mpath_info pinfo;
7748         struct cfg80211_registered_device *rdev;
7749         struct wireless_dev *wdev;
7750         u8 dst[ETH_ALEN];
7751         u8 next_hop[ETH_ALEN];
7752         int path_idx = cb->args[2];
7753         int err;
7754
7755         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7756         if (err)
7757                 return err;
7758         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7759         __acquire(&rdev->wiphy.mtx);
7760
7761         if (!rdev->ops->dump_mpath) {
7762                 err = -EOPNOTSUPP;
7763                 goto out_err;
7764         }
7765
7766         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7767                 err = -EOPNOTSUPP;
7768                 goto out_err;
7769         }
7770
7771         while (1) {
7772                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7773                                       next_hop, &pinfo);
7774                 if (err == -ENOENT)
7775                         break;
7776                 if (err)
7777                         goto out_err;
7778
7779                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7780                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7781                                        wdev->netdev, dst, next_hop,
7782                                        &pinfo) < 0)
7783                         goto out;
7784
7785                 path_idx++;
7786         }
7787
7788  out:
7789         cb->args[2] = path_idx;
7790         err = skb->len;
7791  out_err:
7792         wiphy_unlock(&rdev->wiphy);
7793         return err;
7794 }
7795
7796 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7797 {
7798         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7799         int err;
7800         struct net_device *dev = info->user_ptr[1];
7801         struct mpath_info pinfo;
7802         struct sk_buff *msg;
7803         u8 *dst = NULL;
7804         u8 next_hop[ETH_ALEN];
7805
7806         memset(&pinfo, 0, sizeof(pinfo));
7807
7808         if (!info->attrs[NL80211_ATTR_MAC])
7809                 return -EINVAL;
7810
7811         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7812
7813         if (!rdev->ops->get_mpath)
7814                 return -EOPNOTSUPP;
7815
7816         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7817                 return -EOPNOTSUPP;
7818
7819         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7820         if (err)
7821                 return err;
7822
7823         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7824         if (!msg)
7825                 return -ENOMEM;
7826
7827         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7828                                  dev, dst, next_hop, &pinfo) < 0) {
7829                 nlmsg_free(msg);
7830                 return -ENOBUFS;
7831         }
7832
7833         return genlmsg_reply(msg, info);
7834 }
7835
7836 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7837 {
7838         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7839         struct net_device *dev = info->user_ptr[1];
7840         u8 *dst = NULL;
7841         u8 *next_hop = NULL;
7842
7843         if (!info->attrs[NL80211_ATTR_MAC])
7844                 return -EINVAL;
7845
7846         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7847                 return -EINVAL;
7848
7849         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7850         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7851
7852         if (!rdev->ops->change_mpath)
7853                 return -EOPNOTSUPP;
7854
7855         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7856                 return -EOPNOTSUPP;
7857
7858         return rdev_change_mpath(rdev, dev, dst, next_hop);
7859 }
7860
7861 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7862 {
7863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7864         struct net_device *dev = info->user_ptr[1];
7865         u8 *dst = NULL;
7866         u8 *next_hop = NULL;
7867
7868         if (!info->attrs[NL80211_ATTR_MAC])
7869                 return -EINVAL;
7870
7871         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7872                 return -EINVAL;
7873
7874         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7875         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7876
7877         if (!rdev->ops->add_mpath)
7878                 return -EOPNOTSUPP;
7879
7880         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7881                 return -EOPNOTSUPP;
7882
7883         return rdev_add_mpath(rdev, dev, dst, next_hop);
7884 }
7885
7886 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7887 {
7888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7889         struct net_device *dev = info->user_ptr[1];
7890         u8 *dst = NULL;
7891
7892         if (info->attrs[NL80211_ATTR_MAC])
7893                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7894
7895         if (!rdev->ops->del_mpath)
7896                 return -EOPNOTSUPP;
7897
7898         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7899                 return -EOPNOTSUPP;
7900
7901         return rdev_del_mpath(rdev, dev, dst);
7902 }
7903
7904 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7905 {
7906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7907         int err;
7908         struct net_device *dev = info->user_ptr[1];
7909         struct mpath_info pinfo;
7910         struct sk_buff *msg;
7911         u8 *dst = NULL;
7912         u8 mpp[ETH_ALEN];
7913
7914         memset(&pinfo, 0, sizeof(pinfo));
7915
7916         if (!info->attrs[NL80211_ATTR_MAC])
7917                 return -EINVAL;
7918
7919         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7920
7921         if (!rdev->ops->get_mpp)
7922                 return -EOPNOTSUPP;
7923
7924         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7925                 return -EOPNOTSUPP;
7926
7927         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7928         if (err)
7929                 return err;
7930
7931         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7932         if (!msg)
7933                 return -ENOMEM;
7934
7935         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7936                                dev, dst, mpp, &pinfo) < 0) {
7937                 nlmsg_free(msg);
7938                 return -ENOBUFS;
7939         }
7940
7941         return genlmsg_reply(msg, info);
7942 }
7943
7944 static int nl80211_dump_mpp(struct sk_buff *skb,
7945                             struct netlink_callback *cb)
7946 {
7947         struct mpath_info pinfo;
7948         struct cfg80211_registered_device *rdev;
7949         struct wireless_dev *wdev;
7950         u8 dst[ETH_ALEN];
7951         u8 mpp[ETH_ALEN];
7952         int path_idx = cb->args[2];
7953         int err;
7954
7955         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7956         if (err)
7957                 return err;
7958         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7959         __acquire(&rdev->wiphy.mtx);
7960
7961         if (!rdev->ops->dump_mpp) {
7962                 err = -EOPNOTSUPP;
7963                 goto out_err;
7964         }
7965
7966         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7967                 err = -EOPNOTSUPP;
7968                 goto out_err;
7969         }
7970
7971         while (1) {
7972                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7973                                     mpp, &pinfo);
7974                 if (err == -ENOENT)
7975                         break;
7976                 if (err)
7977                         goto out_err;
7978
7979                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7980                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7981                                        wdev->netdev, dst, mpp,
7982                                        &pinfo) < 0)
7983                         goto out;
7984
7985                 path_idx++;
7986         }
7987
7988  out:
7989         cb->args[2] = path_idx;
7990         err = skb->len;
7991  out_err:
7992         wiphy_unlock(&rdev->wiphy);
7993         return err;
7994 }
7995
7996 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7997 {
7998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7999         struct net_device *dev = info->user_ptr[1];
8000         struct bss_parameters params;
8001
8002         memset(&params, 0, sizeof(params));
8003         params.link_id = nl80211_link_id_or_invalid(info->attrs);
8004         /* default to not changing parameters */
8005         params.use_cts_prot = -1;
8006         params.use_short_preamble = -1;
8007         params.use_short_slot_time = -1;
8008         params.ap_isolate = -1;
8009         params.ht_opmode = -1;
8010         params.p2p_ctwindow = -1;
8011         params.p2p_opp_ps = -1;
8012
8013         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
8014                 params.use_cts_prot =
8015                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
8016         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
8017                 params.use_short_preamble =
8018                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
8019         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
8020                 params.use_short_slot_time =
8021                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
8022         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8023                 params.basic_rates =
8024                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8025                 params.basic_rates_len =
8026                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8027         }
8028         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
8029                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
8030         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
8031                 params.ht_opmode =
8032                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
8033
8034         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
8035                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8036                         return -EINVAL;
8037                 params.p2p_ctwindow =
8038                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
8039                 if (params.p2p_ctwindow != 0 &&
8040                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
8041                         return -EINVAL;
8042         }
8043
8044         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
8045                 u8 tmp;
8046
8047                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8048                         return -EINVAL;
8049                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
8050                 params.p2p_opp_ps = tmp;
8051                 if (params.p2p_opp_ps &&
8052                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
8053                         return -EINVAL;
8054         }
8055
8056         if (!rdev->ops->change_bss)
8057                 return -EOPNOTSUPP;
8058
8059         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
8060             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
8061                 return -EOPNOTSUPP;
8062
8063         return rdev_change_bss(rdev, dev, &params);
8064 }
8065
8066 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
8067 {
8068         char *data = NULL;
8069         bool is_indoor;
8070         enum nl80211_user_reg_hint_type user_reg_hint_type;
8071         u32 owner_nlportid;
8072
8073         /*
8074          * You should only get this when cfg80211 hasn't yet initialized
8075          * completely when built-in to the kernel right between the time
8076          * window between nl80211_init() and regulatory_init(), if that is
8077          * even possible.
8078          */
8079         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
8080                 return -EINPROGRESS;
8081
8082         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
8083                 user_reg_hint_type =
8084                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
8085         else
8086                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
8087
8088         switch (user_reg_hint_type) {
8089         case NL80211_USER_REG_HINT_USER:
8090         case NL80211_USER_REG_HINT_CELL_BASE:
8091                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8092                         return -EINVAL;
8093
8094                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8095                 return regulatory_hint_user(data, user_reg_hint_type);
8096         case NL80211_USER_REG_HINT_INDOOR:
8097                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
8098                         owner_nlportid = info->snd_portid;
8099                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
8100                 } else {
8101                         owner_nlportid = 0;
8102                         is_indoor = true;
8103                 }
8104
8105                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
8106         default:
8107                 return -EINVAL;
8108         }
8109 }
8110
8111 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
8112 {
8113         return reg_reload_regdb();
8114 }
8115
8116 static int nl80211_get_mesh_config(struct sk_buff *skb,
8117                                    struct genl_info *info)
8118 {
8119         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8120         struct net_device *dev = info->user_ptr[1];
8121         struct wireless_dev *wdev = dev->ieee80211_ptr;
8122         struct mesh_config cur_params;
8123         int err = 0;
8124         void *hdr;
8125         struct nlattr *pinfoattr;
8126         struct sk_buff *msg;
8127
8128         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8129                 return -EOPNOTSUPP;
8130
8131         if (!rdev->ops->get_mesh_config)
8132                 return -EOPNOTSUPP;
8133
8134         /* If not connected, get default parameters */
8135         if (!wdev->u.mesh.id_len)
8136                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
8137         else
8138                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
8139
8140         if (err)
8141                 return err;
8142
8143         /* Draw up a netlink message to send back */
8144         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8145         if (!msg)
8146                 return -ENOMEM;
8147         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8148                              NL80211_CMD_GET_MESH_CONFIG);
8149         if (!hdr)
8150                 goto out;
8151         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
8152         if (!pinfoattr)
8153                 goto nla_put_failure;
8154         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8155             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
8156                         cur_params.dot11MeshRetryTimeout) ||
8157             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
8158                         cur_params.dot11MeshConfirmTimeout) ||
8159             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
8160                         cur_params.dot11MeshHoldingTimeout) ||
8161             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
8162                         cur_params.dot11MeshMaxPeerLinks) ||
8163             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
8164                        cur_params.dot11MeshMaxRetries) ||
8165             nla_put_u8(msg, NL80211_MESHCONF_TTL,
8166                        cur_params.dot11MeshTTL) ||
8167             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
8168                        cur_params.element_ttl) ||
8169             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8170                        cur_params.auto_open_plinks) ||
8171             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8172                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
8173             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8174                        cur_params.dot11MeshHWMPmaxPREQretries) ||
8175             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
8176                         cur_params.path_refresh_time) ||
8177             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8178                         cur_params.min_discovery_timeout) ||
8179             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8180                         cur_params.dot11MeshHWMPactivePathTimeout) ||
8181             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8182                         cur_params.dot11MeshHWMPpreqMinInterval) ||
8183             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8184                         cur_params.dot11MeshHWMPperrMinInterval) ||
8185             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8186                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
8187             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
8188                        cur_params.dot11MeshHWMPRootMode) ||
8189             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8190                         cur_params.dot11MeshHWMPRannInterval) ||
8191             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8192                        cur_params.dot11MeshGateAnnouncementProtocol) ||
8193             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
8194                        cur_params.dot11MeshForwarding) ||
8195             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
8196                         cur_params.rssi_threshold) ||
8197             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
8198                         cur_params.ht_opmode) ||
8199             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8200                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
8201             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8202                         cur_params.dot11MeshHWMProotInterval) ||
8203             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8204                         cur_params.dot11MeshHWMPconfirmationInterval) ||
8205             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
8206                         cur_params.power_mode) ||
8207             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
8208                         cur_params.dot11MeshAwakeWindowDuration) ||
8209             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
8210                         cur_params.plink_timeout) ||
8211             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8212                        cur_params.dot11MeshConnectedToMeshGate) ||
8213             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8214                        cur_params.dot11MeshNolearn) ||
8215             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8216                        cur_params.dot11MeshConnectedToAuthServer))
8217                 goto nla_put_failure;
8218         nla_nest_end(msg, pinfoattr);
8219         genlmsg_end(msg, hdr);
8220         return genlmsg_reply(msg, info);
8221
8222  nla_put_failure:
8223  out:
8224         nlmsg_free(msg);
8225         return -ENOBUFS;
8226 }
8227
8228 static const struct nla_policy
8229 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8230         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8231                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8232         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8233                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8234         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8235                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8236         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8237                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8238         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8239         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8240         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8241         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8242         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8243                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8244         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8245         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8246         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8247         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8248         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8249                 NLA_POLICY_MIN(NLA_U16, 1),
8250         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8251                 NLA_POLICY_MIN(NLA_U16, 1),
8252         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8253                 NLA_POLICY_MIN(NLA_U16, 1),
8254         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8255         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8256                 NLA_POLICY_MIN(NLA_U16, 1),
8257         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8258         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8259         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8260                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8261         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8262         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8263         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8264                 NLA_POLICY_MIN(NLA_U16, 1),
8265         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8266                 NLA_POLICY_MIN(NLA_U16, 1),
8267         [NL80211_MESHCONF_POWER_MODE] =
8268                 NLA_POLICY_RANGE(NLA_U32,
8269                                  NL80211_MESH_POWER_ACTIVE,
8270                                  NL80211_MESH_POWER_MAX),
8271         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8272         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8273         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8274         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8275         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8276 };
8277
8278 static const struct nla_policy
8279         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8280         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8281         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8282         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8283         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8284         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8285         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8286         [NL80211_MESH_SETUP_IE] =
8287                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8288                                        IEEE80211_MAX_DATA_LEN),
8289         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8290 };
8291
8292 static int nl80211_parse_mesh_config(struct genl_info *info,
8293                                      struct mesh_config *cfg,
8294                                      u32 *mask_out)
8295 {
8296         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8297         u32 mask = 0;
8298         u16 ht_opmode;
8299
8300 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8301 do {                                                                    \
8302         if (tb[attr]) {                                                 \
8303                 cfg->param = fn(tb[attr]);                              \
8304                 mask |= BIT((attr) - 1);                                \
8305         }                                                               \
8306 } while (0)
8307
8308         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8309                 return -EINVAL;
8310         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8311                 return -EINVAL;
8312
8313         /* This makes sure that there aren't more than 32 mesh config
8314          * parameters (otherwise our bitfield scheme would not work.) */
8315         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8316
8317         /* Fill in the params struct */
8318         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8319                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8320         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8321                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8322                                   nla_get_u16);
8323         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8324                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8325                                   nla_get_u16);
8326         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8327                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8328                                   nla_get_u16);
8329         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8330                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8331         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8332                                   NL80211_MESHCONF_TTL, nla_get_u8);
8333         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8334                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8335         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8336                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8337                                   nla_get_u8);
8338         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8339                                   mask,
8340                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8341                                   nla_get_u32);
8342         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8343                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8344                                   nla_get_u8);
8345         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8346                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8347                                   nla_get_u32);
8348         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8349             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8350                 return -EINVAL;
8351         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8352                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8353                                   nla_get_u16);
8354         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8355                                   mask,
8356                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8357                                   nla_get_u32);
8358         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8359             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8360              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8361                 return -EINVAL;
8362         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8363                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8364                                   nla_get_u16);
8365         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8366                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8367                                   nla_get_u16);
8368         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8369                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8370                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8371                                   nla_get_u16);
8372         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8373                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8374         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8375                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8376                                   nla_get_u16);
8377         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8378                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8379                                   nla_get_u8);
8380         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8381                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8382         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8383                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8384                                   nla_get_s32);
8385         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8386                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8387                                   nla_get_u8);
8388         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8389                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8390                                   nla_get_u8);
8391         /*
8392          * Check HT operation mode based on
8393          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8394          */
8395         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8396                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8397
8398                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8399                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8400                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8401                         return -EINVAL;
8402
8403                 /* NON_HT_STA bit is reserved, but some programs set it */
8404                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8405
8406                 cfg->ht_opmode = ht_opmode;
8407                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8408         }
8409         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8410                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8411                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8412                                   nla_get_u32);
8413         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8414             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8415              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8416                 return -EINVAL;
8417         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8418                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8419                                   nla_get_u16);
8420         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8421                                   mask,
8422                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8423                                   nla_get_u16);
8424         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8425                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8426         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8427                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8428         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8429                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8430         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8431                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8432         if (mask_out)
8433                 *mask_out = mask;
8434
8435         return 0;
8436
8437 #undef FILL_IN_MESH_PARAM_IF_SET
8438 }
8439
8440 static int nl80211_parse_mesh_setup(struct genl_info *info,
8441                                      struct mesh_setup *setup)
8442 {
8443         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8444         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8445
8446         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8447                 return -EINVAL;
8448         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8449                 return -EINVAL;
8450
8451         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8452                 setup->sync_method =
8453                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8454                  IEEE80211_SYNC_METHOD_VENDOR :
8455                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8456
8457         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8458                 setup->path_sel_proto =
8459                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8460                  IEEE80211_PATH_PROTOCOL_VENDOR :
8461                  IEEE80211_PATH_PROTOCOL_HWMP;
8462
8463         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8464                 setup->path_metric =
8465                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8466                  IEEE80211_PATH_METRIC_VENDOR :
8467                  IEEE80211_PATH_METRIC_AIRTIME;
8468
8469         if (tb[NL80211_MESH_SETUP_IE]) {
8470                 struct nlattr *ieattr =
8471                         tb[NL80211_MESH_SETUP_IE];
8472                 setup->ie = nla_data(ieattr);
8473                 setup->ie_len = nla_len(ieattr);
8474         }
8475         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8476             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8477                 return -EINVAL;
8478         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8479         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8480         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8481         if (setup->is_secure)
8482                 setup->user_mpm = true;
8483
8484         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8485                 if (!setup->user_mpm)
8486                         return -EINVAL;
8487                 setup->auth_id =
8488                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8489         }
8490
8491         return 0;
8492 }
8493
8494 static int nl80211_update_mesh_config(struct sk_buff *skb,
8495                                       struct genl_info *info)
8496 {
8497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8498         struct net_device *dev = info->user_ptr[1];
8499         struct wireless_dev *wdev = dev->ieee80211_ptr;
8500         struct mesh_config cfg = {};
8501         u32 mask;
8502         int err;
8503
8504         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8505                 return -EOPNOTSUPP;
8506
8507         if (!rdev->ops->update_mesh_config)
8508                 return -EOPNOTSUPP;
8509
8510         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8511         if (err)
8512                 return err;
8513
8514         if (!wdev->u.mesh.id_len)
8515                 err = -ENOLINK;
8516
8517         if (!err)
8518                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8519
8520         return err;
8521 }
8522
8523 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8524                               struct sk_buff *msg)
8525 {
8526         struct nlattr *nl_reg_rules;
8527         unsigned int i;
8528
8529         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8530             (regdom->dfs_region &&
8531              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8532                 goto nla_put_failure;
8533
8534         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8535         if (!nl_reg_rules)
8536                 goto nla_put_failure;
8537
8538         for (i = 0; i < regdom->n_reg_rules; i++) {
8539                 struct nlattr *nl_reg_rule;
8540                 const struct ieee80211_reg_rule *reg_rule;
8541                 const struct ieee80211_freq_range *freq_range;
8542                 const struct ieee80211_power_rule *power_rule;
8543                 unsigned int max_bandwidth_khz;
8544
8545                 reg_rule = &regdom->reg_rules[i];
8546                 freq_range = &reg_rule->freq_range;
8547                 power_rule = &reg_rule->power_rule;
8548
8549                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8550                 if (!nl_reg_rule)
8551                         goto nla_put_failure;
8552
8553                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8554                 if (!max_bandwidth_khz)
8555                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8556                                                                   reg_rule);
8557
8558                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8559                                 reg_rule->flags) ||
8560                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8561                                 freq_range->start_freq_khz) ||
8562                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8563                                 freq_range->end_freq_khz) ||
8564                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8565                                 max_bandwidth_khz) ||
8566                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8567                                 power_rule->max_antenna_gain) ||
8568                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8569                                 power_rule->max_eirp) ||
8570                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8571                                 reg_rule->dfs_cac_ms))
8572                         goto nla_put_failure;
8573
8574                 if ((reg_rule->flags & NL80211_RRF_PSD) &&
8575                     nla_put_s8(msg, NL80211_ATTR_POWER_RULE_PSD,
8576                                reg_rule->psd))
8577                         goto nla_put_failure;
8578
8579                 nla_nest_end(msg, nl_reg_rule);
8580         }
8581
8582         nla_nest_end(msg, nl_reg_rules);
8583         return 0;
8584
8585 nla_put_failure:
8586         return -EMSGSIZE;
8587 }
8588
8589 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8590 {
8591         const struct ieee80211_regdomain *regdom = NULL;
8592         struct cfg80211_registered_device *rdev;
8593         struct wiphy *wiphy = NULL;
8594         struct sk_buff *msg;
8595         int err = -EMSGSIZE;
8596         void *hdr;
8597
8598         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8599         if (!msg)
8600                 return -ENOBUFS;
8601
8602         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8603                              NL80211_CMD_GET_REG);
8604         if (!hdr)
8605                 goto put_failure;
8606
8607         rtnl_lock();
8608
8609         if (info->attrs[NL80211_ATTR_WIPHY]) {
8610                 bool self_managed;
8611
8612                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8613                 if (IS_ERR(rdev)) {
8614                         err = PTR_ERR(rdev);
8615                         goto nla_put_failure;
8616                 }
8617
8618                 wiphy = &rdev->wiphy;
8619                 self_managed = wiphy->regulatory_flags &
8620                                REGULATORY_WIPHY_SELF_MANAGED;
8621
8622                 rcu_read_lock();
8623
8624                 regdom = get_wiphy_regdom(wiphy);
8625
8626                 /* a self-managed-reg device must have a private regdom */
8627                 if (WARN_ON(!regdom && self_managed)) {
8628                         err = -EINVAL;
8629                         goto nla_put_failure_rcu;
8630                 }
8631
8632                 if (regdom &&
8633                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8634                         goto nla_put_failure_rcu;
8635         } else {
8636                 rcu_read_lock();
8637         }
8638
8639         if (!wiphy && reg_last_request_cell_base() &&
8640             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8641                         NL80211_USER_REG_HINT_CELL_BASE))
8642                 goto nla_put_failure_rcu;
8643
8644         if (!regdom)
8645                 regdom = rcu_dereference(cfg80211_regdomain);
8646
8647         if (nl80211_put_regdom(regdom, msg))
8648                 goto nla_put_failure_rcu;
8649
8650         rcu_read_unlock();
8651
8652         genlmsg_end(msg, hdr);
8653         rtnl_unlock();
8654         return genlmsg_reply(msg, info);
8655
8656 nla_put_failure_rcu:
8657         rcu_read_unlock();
8658 nla_put_failure:
8659         rtnl_unlock();
8660 put_failure:
8661         nlmsg_free(msg);
8662         return err;
8663 }
8664
8665 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8666                                u32 seq, int flags, struct wiphy *wiphy,
8667                                const struct ieee80211_regdomain *regdom)
8668 {
8669         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8670                                    NL80211_CMD_GET_REG);
8671
8672         if (!hdr)
8673                 return -1;
8674
8675         genl_dump_check_consistent(cb, hdr);
8676
8677         if (nl80211_put_regdom(regdom, msg))
8678                 goto nla_put_failure;
8679
8680         if (!wiphy && reg_last_request_cell_base() &&
8681             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8682                         NL80211_USER_REG_HINT_CELL_BASE))
8683                 goto nla_put_failure;
8684
8685         if (wiphy &&
8686             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8687                 goto nla_put_failure;
8688
8689         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8690             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8691                 goto nla_put_failure;
8692
8693         genlmsg_end(msg, hdr);
8694         return 0;
8695
8696 nla_put_failure:
8697         genlmsg_cancel(msg, hdr);
8698         return -EMSGSIZE;
8699 }
8700
8701 static int nl80211_get_reg_dump(struct sk_buff *skb,
8702                                 struct netlink_callback *cb)
8703 {
8704         const struct ieee80211_regdomain *regdom = NULL;
8705         struct cfg80211_registered_device *rdev;
8706         int err, reg_idx, start = cb->args[2];
8707
8708         rcu_read_lock();
8709
8710         if (cfg80211_regdomain && start == 0) {
8711                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8712                                           NLM_F_MULTI, NULL,
8713                                           rcu_dereference(cfg80211_regdomain));
8714                 if (err < 0)
8715                         goto out_err;
8716         }
8717
8718         /* the global regdom is idx 0 */
8719         reg_idx = 1;
8720         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8721                 regdom = get_wiphy_regdom(&rdev->wiphy);
8722                 if (!regdom)
8723                         continue;
8724
8725                 if (++reg_idx <= start)
8726                         continue;
8727
8728                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8729                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8730                 if (err < 0) {
8731                         reg_idx--;
8732                         break;
8733                 }
8734         }
8735
8736         cb->args[2] = reg_idx;
8737         err = skb->len;
8738 out_err:
8739         rcu_read_unlock();
8740         return err;
8741 }
8742
8743 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8744 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8745         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8746         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8747         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8748         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8749         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8750         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8751         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8752 };
8753
8754 static int parse_reg_rule(struct nlattr *tb[],
8755         struct ieee80211_reg_rule *reg_rule)
8756 {
8757         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8758         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8759
8760         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8761                 return -EINVAL;
8762         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8763                 return -EINVAL;
8764         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8765                 return -EINVAL;
8766         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8767                 return -EINVAL;
8768         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8769                 return -EINVAL;
8770
8771         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8772
8773         freq_range->start_freq_khz =
8774                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8775         freq_range->end_freq_khz =
8776                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8777         freq_range->max_bandwidth_khz =
8778                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8779
8780         power_rule->max_eirp =
8781                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8782
8783         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8784                 power_rule->max_antenna_gain =
8785                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8786
8787         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8788                 reg_rule->dfs_cac_ms =
8789                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8790
8791         return 0;
8792 }
8793
8794 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8795 {
8796         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8797         struct nlattr *nl_reg_rule;
8798         char *alpha2;
8799         int rem_reg_rules, r;
8800         u32 num_rules = 0, rule_idx = 0;
8801         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8802         struct ieee80211_regdomain *rd;
8803
8804         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8805                 return -EINVAL;
8806
8807         if (!info->attrs[NL80211_ATTR_REG_RULES])
8808                 return -EINVAL;
8809
8810         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8811
8812         if (info->attrs[NL80211_ATTR_DFS_REGION])
8813                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8814
8815         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8816                             rem_reg_rules) {
8817                 num_rules++;
8818                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8819                         return -EINVAL;
8820         }
8821
8822         rtnl_lock();
8823         if (!reg_is_valid_request(alpha2)) {
8824                 r = -EINVAL;
8825                 goto out;
8826         }
8827
8828         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8829         if (!rd) {
8830                 r = -ENOMEM;
8831                 goto out;
8832         }
8833
8834         rd->n_reg_rules = num_rules;
8835         rd->alpha2[0] = alpha2[0];
8836         rd->alpha2[1] = alpha2[1];
8837
8838         /*
8839          * Disable DFS master mode if the DFS region was
8840          * not supported or known on this kernel.
8841          */
8842         if (reg_supported_dfs_region(dfs_region))
8843                 rd->dfs_region = dfs_region;
8844
8845         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8846                             rem_reg_rules) {
8847                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8848                                                 nl_reg_rule, reg_rule_policy,
8849                                                 info->extack);
8850                 if (r)
8851                         goto bad_reg;
8852                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8853                 if (r)
8854                         goto bad_reg;
8855
8856                 rule_idx++;
8857
8858                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8859                         r = -EINVAL;
8860                         goto bad_reg;
8861                 }
8862         }
8863
8864         r = set_regdom(rd, REGD_SOURCE_CRDA);
8865         /* set_regdom takes ownership of rd */
8866         rd = NULL;
8867  bad_reg:
8868         kfree(rd);
8869  out:
8870         rtnl_unlock();
8871         return r;
8872 }
8873 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8874
8875 static int validate_scan_freqs(struct nlattr *freqs)
8876 {
8877         struct nlattr *attr1, *attr2;
8878         int n_channels = 0, tmp1, tmp2;
8879
8880         nla_for_each_nested(attr1, freqs, tmp1)
8881                 if (nla_len(attr1) != sizeof(u32))
8882                         return 0;
8883
8884         nla_for_each_nested(attr1, freqs, tmp1) {
8885                 n_channels++;
8886                 /*
8887                  * Some hardware has a limited channel list for
8888                  * scanning, and it is pretty much nonsensical
8889                  * to scan for a channel twice, so disallow that
8890                  * and don't require drivers to check that the
8891                  * channel list they get isn't longer than what
8892                  * they can scan, as long as they can scan all
8893                  * the channels they registered at once.
8894                  */
8895                 nla_for_each_nested(attr2, freqs, tmp2)
8896                         if (attr1 != attr2 &&
8897                             nla_get_u32(attr1) == nla_get_u32(attr2))
8898                                 return 0;
8899         }
8900
8901         return n_channels;
8902 }
8903
8904 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8905 {
8906         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8907 }
8908
8909 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8910                             struct cfg80211_bss_selection *bss_select)
8911 {
8912         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8913         struct nlattr *nest;
8914         int err;
8915         bool found = false;
8916         int i;
8917
8918         /* only process one nested attribute */
8919         nest = nla_data(nla);
8920         if (!nla_ok(nest, nla_len(nest)))
8921                 return -EINVAL;
8922
8923         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8924                                           nest, nl80211_bss_select_policy,
8925                                           NULL);
8926         if (err)
8927                 return err;
8928
8929         /* only one attribute may be given */
8930         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8931                 if (attr[i]) {
8932                         if (found)
8933                                 return -EINVAL;
8934                         found = true;
8935                 }
8936         }
8937
8938         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8939
8940         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8941                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8942
8943         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8944                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8945                 bss_select->param.band_pref =
8946                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8947                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8948                         return -EINVAL;
8949         }
8950
8951         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8952                 struct nl80211_bss_select_rssi_adjust *adj_param;
8953
8954                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8955                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8956                 bss_select->param.adjust.band = adj_param->band;
8957                 bss_select->param.adjust.delta = adj_param->delta;
8958                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8959                         return -EINVAL;
8960         }
8961
8962         /* user-space did not provide behaviour attribute */
8963         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8964                 return -EINVAL;
8965
8966         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8967                 return -EINVAL;
8968
8969         return 0;
8970 }
8971
8972 int nl80211_parse_random_mac(struct nlattr **attrs,
8973                              u8 *mac_addr, u8 *mac_addr_mask)
8974 {
8975         int i;
8976
8977         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8978                 eth_zero_addr(mac_addr);
8979                 eth_zero_addr(mac_addr_mask);
8980                 mac_addr[0] = 0x2;
8981                 mac_addr_mask[0] = 0x3;
8982
8983                 return 0;
8984         }
8985
8986         /* need both or none */
8987         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8988                 return -EINVAL;
8989
8990         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8991         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8992
8993         /* don't allow or configure an mcast address */
8994         if (!is_multicast_ether_addr(mac_addr_mask) ||
8995             is_multicast_ether_addr(mac_addr))
8996                 return -EINVAL;
8997
8998         /*
8999          * allow users to pass a MAC address that has bits set outside
9000          * of the mask, but don't bother drivers with having to deal
9001          * with such bits
9002          */
9003         for (i = 0; i < ETH_ALEN; i++)
9004                 mac_addr[i] &= mac_addr_mask[i];
9005
9006         return 0;
9007 }
9008
9009 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
9010                                               struct ieee80211_channel *chan)
9011 {
9012         unsigned int link_id;
9013         bool all_ok = true;
9014
9015         lockdep_assert_wiphy(wdev->wiphy);
9016
9017         if (!cfg80211_beaconing_iface_active(wdev))
9018                 return true;
9019
9020         /*
9021          * FIXME: check if we have a free HW resource/link for chan
9022          *
9023          * This, as well as the FIXME below, requires knowing the link
9024          * capabilities of the hardware.
9025          */
9026
9027         /* we cannot leave radar channels */
9028         for_each_valid_link(wdev, link_id) {
9029                 struct cfg80211_chan_def *chandef;
9030
9031                 chandef = wdev_chandef(wdev, link_id);
9032                 if (!chandef || !chandef->chan)
9033                         continue;
9034
9035                 /*
9036                  * FIXME: don't require all_ok, but rather check only the
9037                  *        correct HW resource/link onto which 'chan' falls,
9038                  *        as only that link leaves the channel for doing
9039                  *        the off-channel operation.
9040                  */
9041
9042                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
9043                         all_ok = false;
9044         }
9045
9046         if (all_ok)
9047                 return true;
9048
9049         return regulatory_pre_cac_allowed(wdev->wiphy);
9050 }
9051
9052 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
9053                                     enum nl80211_ext_feature_index feat)
9054 {
9055         if (!(flags & flag))
9056                 return true;
9057         if (wiphy_ext_feature_isset(wiphy, feat))
9058                 return true;
9059         return false;
9060 }
9061
9062 static int
9063 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
9064                          void *request, struct nlattr **attrs,
9065                          bool is_sched_scan)
9066 {
9067         u8 *mac_addr, *mac_addr_mask;
9068         u32 *flags;
9069         enum nl80211_feature_flags randomness_flag;
9070
9071         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
9072                 return 0;
9073
9074         if (is_sched_scan) {
9075                 struct cfg80211_sched_scan_request *req = request;
9076
9077                 randomness_flag = wdev ?
9078                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
9079                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
9080                 flags = &req->flags;
9081                 mac_addr = req->mac_addr;
9082                 mac_addr_mask = req->mac_addr_mask;
9083         } else {
9084                 struct cfg80211_scan_request *req = request;
9085
9086                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
9087                 flags = &req->flags;
9088                 mac_addr = req->mac_addr;
9089                 mac_addr_mask = req->mac_addr_mask;
9090         }
9091
9092         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
9093
9094         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
9095              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
9096             !nl80211_check_scan_feat(wiphy, *flags,
9097                                      NL80211_SCAN_FLAG_LOW_SPAN,
9098                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
9099             !nl80211_check_scan_feat(wiphy, *flags,
9100                                      NL80211_SCAN_FLAG_LOW_POWER,
9101                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
9102             !nl80211_check_scan_feat(wiphy, *flags,
9103                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
9104                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
9105             !nl80211_check_scan_feat(wiphy, *flags,
9106                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
9107                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
9108             !nl80211_check_scan_feat(wiphy, *flags,
9109                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
9110                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
9111             !nl80211_check_scan_feat(wiphy, *flags,
9112                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
9113                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
9114             !nl80211_check_scan_feat(wiphy, *flags,
9115                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
9116                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
9117             !nl80211_check_scan_feat(wiphy, *flags,
9118                                      NL80211_SCAN_FLAG_RANDOM_SN,
9119                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
9120             !nl80211_check_scan_feat(wiphy, *flags,
9121                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
9122                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
9123                 return -EOPNOTSUPP;
9124
9125         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
9126                 int err;
9127
9128                 if (!(wiphy->features & randomness_flag) ||
9129                     (wdev && wdev->connected))
9130                         return -EOPNOTSUPP;
9131
9132                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
9133                 if (err)
9134                         return err;
9135         }
9136
9137         return 0;
9138 }
9139
9140 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
9141 {
9142         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9143         struct wireless_dev *wdev = info->user_ptr[1];
9144         struct cfg80211_scan_request *request;
9145         struct nlattr *scan_freqs = NULL;
9146         bool scan_freqs_khz = false;
9147         struct nlattr *attr;
9148         struct wiphy *wiphy;
9149         int err, tmp, n_ssids = 0, n_channels, i;
9150         size_t ie_len, size;
9151
9152         wiphy = &rdev->wiphy;
9153
9154         if (wdev->iftype == NL80211_IFTYPE_NAN)
9155                 return -EOPNOTSUPP;
9156
9157         if (!rdev->ops->scan)
9158                 return -EOPNOTSUPP;
9159
9160         if (rdev->scan_req || rdev->scan_msg)
9161                 return -EBUSY;
9162
9163         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
9164                 if (!wiphy_ext_feature_isset(wiphy,
9165                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
9166                         return -EOPNOTSUPP;
9167                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
9168                 scan_freqs_khz = true;
9169         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
9170                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
9171
9172         if (scan_freqs) {
9173                 n_channels = validate_scan_freqs(scan_freqs);
9174                 if (!n_channels)
9175                         return -EINVAL;
9176         } else {
9177                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9178         }
9179
9180         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
9181                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
9182                         n_ssids++;
9183
9184         if (n_ssids > wiphy->max_scan_ssids)
9185                 return -EINVAL;
9186
9187         if (info->attrs[NL80211_ATTR_IE])
9188                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9189         else
9190                 ie_len = 0;
9191
9192         if (ie_len > wiphy->max_scan_ie_len)
9193                 return -EINVAL;
9194
9195         size = struct_size(request, channels, n_channels);
9196         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9197         size = size_add(size, ie_len);
9198         request = kzalloc(size, GFP_KERNEL);
9199         if (!request)
9200                 return -ENOMEM;
9201
9202         if (n_ssids)
9203                 request->ssids = (void *)&request->channels[n_channels];
9204         request->n_ssids = n_ssids;
9205         if (ie_len) {
9206                 if (n_ssids)
9207                         request->ie = (void *)(request->ssids + n_ssids);
9208                 else
9209                         request->ie = (void *)(request->channels + n_channels);
9210         }
9211
9212         i = 0;
9213         if (scan_freqs) {
9214                 /* user specified, bail out if channel not found */
9215                 nla_for_each_nested(attr, scan_freqs, tmp) {
9216                         struct ieee80211_channel *chan;
9217                         int freq = nla_get_u32(attr);
9218
9219                         if (!scan_freqs_khz)
9220                                 freq = MHZ_TO_KHZ(freq);
9221
9222                         chan = ieee80211_get_channel_khz(wiphy, freq);
9223                         if (!chan) {
9224                                 err = -EINVAL;
9225                                 goto out_free;
9226                         }
9227
9228                         /* ignore disabled channels */
9229                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9230                                 continue;
9231
9232                         request->channels[i] = chan;
9233                         i++;
9234                 }
9235         } else {
9236                 enum nl80211_band band;
9237
9238                 /* all channels */
9239                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9240                         int j;
9241
9242                         if (!wiphy->bands[band])
9243                                 continue;
9244                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9245                                 struct ieee80211_channel *chan;
9246
9247                                 chan = &wiphy->bands[band]->channels[j];
9248
9249                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9250                                         continue;
9251
9252                                 request->channels[i] = chan;
9253                                 i++;
9254                         }
9255                 }
9256         }
9257
9258         if (!i) {
9259                 err = -EINVAL;
9260                 goto out_free;
9261         }
9262
9263         request->n_channels = i;
9264
9265         for (i = 0; i < request->n_channels; i++) {
9266                 struct ieee80211_channel *chan = request->channels[i];
9267
9268                 /* if we can go off-channel to the target channel we're good */
9269                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9270                         continue;
9271
9272                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9273                         err = -EBUSY;
9274                         goto out_free;
9275                 }
9276         }
9277
9278         i = 0;
9279         if (n_ssids) {
9280                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9281                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9282                                 err = -EINVAL;
9283                                 goto out_free;
9284                         }
9285                         request->ssids[i].ssid_len = nla_len(attr);
9286                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9287                         i++;
9288                 }
9289         }
9290
9291         if (info->attrs[NL80211_ATTR_IE]) {
9292                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9293                 memcpy((void *)request->ie,
9294                        nla_data(info->attrs[NL80211_ATTR_IE]),
9295                        request->ie_len);
9296         }
9297
9298         for (i = 0; i < NUM_NL80211_BANDS; i++)
9299                 if (wiphy->bands[i])
9300                         request->rates[i] =
9301                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9302
9303         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9304                 nla_for_each_nested(attr,
9305                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9306                                     tmp) {
9307                         enum nl80211_band band = nla_type(attr);
9308
9309                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9310                                 err = -EINVAL;
9311                                 goto out_free;
9312                         }
9313
9314                         if (!wiphy->bands[band])
9315                                 continue;
9316
9317                         err = ieee80211_get_ratemask(wiphy->bands[band],
9318                                                      nla_data(attr),
9319                                                      nla_len(attr),
9320                                                      &request->rates[band]);
9321                         if (err)
9322                                 goto out_free;
9323                 }
9324         }
9325
9326         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9327                 request->duration =
9328                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9329                 request->duration_mandatory =
9330                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9331         }
9332
9333         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9334                                        false);
9335         if (err)
9336                 goto out_free;
9337
9338         request->no_cck =
9339                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9340
9341         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9342          * BSSID to scan for. This was problematic because that same attribute
9343          * was already used for another purpose (local random MAC address). The
9344          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9345          * compatibility with older userspace components, also use the
9346          * NL80211_ATTR_MAC value here if it can be determined to be used for
9347          * the specific BSSID use case instead of the random MAC address
9348          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9349          */
9350         if (info->attrs[NL80211_ATTR_BSSID])
9351                 memcpy(request->bssid,
9352                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9353         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9354                  info->attrs[NL80211_ATTR_MAC])
9355                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9356                        ETH_ALEN);
9357         else
9358                 eth_broadcast_addr(request->bssid);
9359
9360         request->tsf_report_link_id = nl80211_link_id_or_invalid(info->attrs);
9361         request->wdev = wdev;
9362         request->wiphy = &rdev->wiphy;
9363         request->scan_start = jiffies;
9364
9365         rdev->scan_req = request;
9366         err = cfg80211_scan(rdev);
9367
9368         if (err)
9369                 goto out_free;
9370
9371         nl80211_send_scan_start(rdev, wdev);
9372         dev_hold(wdev->netdev);
9373
9374         return 0;
9375
9376  out_free:
9377         rdev->scan_req = NULL;
9378         kfree(request);
9379
9380         return err;
9381 }
9382
9383 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9384 {
9385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9386         struct wireless_dev *wdev = info->user_ptr[1];
9387
9388         if (!rdev->ops->abort_scan)
9389                 return -EOPNOTSUPP;
9390
9391         if (rdev->scan_msg)
9392                 return 0;
9393
9394         if (!rdev->scan_req)
9395                 return -ENOENT;
9396
9397         rdev_abort_scan(rdev, wdev);
9398         return 0;
9399 }
9400
9401 static int
9402 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9403                                struct cfg80211_sched_scan_request *request,
9404                                struct nlattr **attrs)
9405 {
9406         int tmp, err, i = 0;
9407         struct nlattr *attr;
9408
9409         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9410                 u32 interval;
9411
9412                 /*
9413                  * If scan plans are not specified,
9414                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9415                  * case one scan plan will be set with the specified scan
9416                  * interval and infinite number of iterations.
9417                  */
9418                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9419                 if (!interval)
9420                         return -EINVAL;
9421
9422                 request->scan_plans[0].interval =
9423                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9424                 if (!request->scan_plans[0].interval)
9425                         return -EINVAL;
9426
9427                 if (request->scan_plans[0].interval >
9428                     wiphy->max_sched_scan_plan_interval)
9429                         request->scan_plans[0].interval =
9430                                 wiphy->max_sched_scan_plan_interval;
9431
9432                 return 0;
9433         }
9434
9435         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9436                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9437
9438                 if (WARN_ON(i >= n_plans))
9439                         return -EINVAL;
9440
9441                 err = nla_parse_nested_deprecated(plan,
9442                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9443                                                   attr, nl80211_plan_policy,
9444                                                   NULL);
9445                 if (err)
9446                         return err;
9447
9448                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9449                         return -EINVAL;
9450
9451                 request->scan_plans[i].interval =
9452                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9453                 if (!request->scan_plans[i].interval ||
9454                     request->scan_plans[i].interval >
9455                     wiphy->max_sched_scan_plan_interval)
9456                         return -EINVAL;
9457
9458                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9459                         request->scan_plans[i].iterations =
9460                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9461                         if (!request->scan_plans[i].iterations ||
9462                             (request->scan_plans[i].iterations >
9463                              wiphy->max_sched_scan_plan_iterations))
9464                                 return -EINVAL;
9465                 } else if (i < n_plans - 1) {
9466                         /*
9467                          * All scan plans but the last one must specify
9468                          * a finite number of iterations
9469                          */
9470                         return -EINVAL;
9471                 }
9472
9473                 i++;
9474         }
9475
9476         /*
9477          * The last scan plan must not specify the number of
9478          * iterations, it is supposed to run infinitely
9479          */
9480         if (request->scan_plans[n_plans - 1].iterations)
9481                 return  -EINVAL;
9482
9483         return 0;
9484 }
9485
9486 static int
9487 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9488                                        struct cfg80211_match_set *match_sets,
9489                                        struct nlattr *tb_band_rssi,
9490                                        s32 rssi_thold)
9491 {
9492         struct nlattr *attr;
9493         int i, tmp, ret = 0;
9494
9495         if (!wiphy_ext_feature_isset(wiphy,
9496                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9497                 if (tb_band_rssi)
9498                         ret = -EOPNOTSUPP;
9499                 else
9500                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9501                                 match_sets->per_band_rssi_thold[i] =
9502                                         NL80211_SCAN_RSSI_THOLD_OFF;
9503                 return ret;
9504         }
9505
9506         for (i = 0; i < NUM_NL80211_BANDS; i++)
9507                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9508
9509         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9510                 enum nl80211_band band = nla_type(attr);
9511
9512                 if (band < 0 || band >= NUM_NL80211_BANDS)
9513                         return -EINVAL;
9514
9515                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9516         }
9517
9518         return 0;
9519 }
9520
9521 static struct cfg80211_sched_scan_request *
9522 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9523                          struct nlattr **attrs, int max_match_sets)
9524 {
9525         struct cfg80211_sched_scan_request *request;
9526         struct nlattr *attr;
9527         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9528         enum nl80211_band band;
9529         size_t ie_len, size;
9530         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9531         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9532
9533         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9534                 n_channels = validate_scan_freqs(
9535                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9536                 if (!n_channels)
9537                         return ERR_PTR(-EINVAL);
9538         } else {
9539                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9540         }
9541
9542         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9543                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9544                                     tmp)
9545                         n_ssids++;
9546
9547         if (n_ssids > wiphy->max_sched_scan_ssids)
9548                 return ERR_PTR(-EINVAL);
9549
9550         /*
9551          * First, count the number of 'real' matchsets. Due to an issue with
9552          * the old implementation, matchsets containing only the RSSI attribute
9553          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9554          * RSSI for all matchsets, rather than their own matchset for reporting
9555          * all APs with a strong RSSI. This is needed to be compatible with
9556          * older userspace that treated a matchset with only the RSSI as the
9557          * global RSSI for all other matchsets - if there are other matchsets.
9558          */
9559         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9560                 nla_for_each_nested(attr,
9561                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9562                                     tmp) {
9563                         struct nlattr *rssi;
9564
9565                         err = nla_parse_nested_deprecated(tb,
9566                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9567                                                           attr,
9568                                                           nl80211_match_policy,
9569                                                           NULL);
9570                         if (err)
9571                                 return ERR_PTR(err);
9572
9573                         /* SSID and BSSID are mutually exclusive */
9574                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9575                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9576                                 return ERR_PTR(-EINVAL);
9577
9578                         /* add other standalone attributes here */
9579                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9580                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9581                                 n_match_sets++;
9582                                 continue;
9583                         }
9584                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9585                         if (rssi)
9586                                 default_match_rssi = nla_get_s32(rssi);
9587                 }
9588         }
9589
9590         /* However, if there's no other matchset, add the RSSI one */
9591         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9592                 n_match_sets = 1;
9593
9594         if (n_match_sets > max_match_sets)
9595                 return ERR_PTR(-EINVAL);
9596
9597         if (attrs[NL80211_ATTR_IE])
9598                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9599         else
9600                 ie_len = 0;
9601
9602         if (ie_len > wiphy->max_sched_scan_ie_len)
9603                 return ERR_PTR(-EINVAL);
9604
9605         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9606                 /*
9607                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9608                  * each scan plan already specifies its own interval
9609                  */
9610                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9611                         return ERR_PTR(-EINVAL);
9612
9613                 nla_for_each_nested(attr,
9614                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9615                         n_plans++;
9616         } else {
9617                 /*
9618                  * The scan interval attribute is kept for backward
9619                  * compatibility. If no scan plans are specified and sched scan
9620                  * interval is specified, one scan plan will be set with this
9621                  * scan interval and infinite number of iterations.
9622                  */
9623                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9624                         return ERR_PTR(-EINVAL);
9625
9626                 n_plans = 1;
9627         }
9628
9629         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9630                 return ERR_PTR(-EINVAL);
9631
9632         if (!wiphy_ext_feature_isset(
9633                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9634             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9635              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9636                 return ERR_PTR(-EINVAL);
9637
9638         size = struct_size(request, channels, n_channels);
9639         size = size_add(size, array_size(sizeof(*request->ssids), n_ssids));
9640         size = size_add(size, array_size(sizeof(*request->match_sets),
9641                                          n_match_sets));
9642         size = size_add(size, array_size(sizeof(*request->scan_plans),
9643                                          n_plans));
9644         size = size_add(size, ie_len);
9645         request = kzalloc(size, GFP_KERNEL);
9646         if (!request)
9647                 return ERR_PTR(-ENOMEM);
9648
9649         if (n_ssids)
9650                 request->ssids = (void *)&request->channels[n_channels];
9651         request->n_ssids = n_ssids;
9652         if (ie_len) {
9653                 if (n_ssids)
9654                         request->ie = (void *)(request->ssids + n_ssids);
9655                 else
9656                         request->ie = (void *)(request->channels + n_channels);
9657         }
9658
9659         if (n_match_sets) {
9660                 if (request->ie)
9661                         request->match_sets = (void *)(request->ie + ie_len);
9662                 else if (n_ssids)
9663                         request->match_sets =
9664                                 (void *)(request->ssids + n_ssids);
9665                 else
9666                         request->match_sets =
9667                                 (void *)(request->channels + n_channels);
9668         }
9669         request->n_match_sets = n_match_sets;
9670
9671         if (n_match_sets)
9672                 request->scan_plans = (void *)(request->match_sets +
9673                                                n_match_sets);
9674         else if (request->ie)
9675                 request->scan_plans = (void *)(request->ie + ie_len);
9676         else if (n_ssids)
9677                 request->scan_plans = (void *)(request->ssids + n_ssids);
9678         else
9679                 request->scan_plans = (void *)(request->channels + n_channels);
9680
9681         request->n_scan_plans = n_plans;
9682
9683         i = 0;
9684         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9685                 /* user specified, bail out if channel not found */
9686                 nla_for_each_nested(attr,
9687                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9688                                     tmp) {
9689                         struct ieee80211_channel *chan;
9690
9691                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9692
9693                         if (!chan) {
9694                                 err = -EINVAL;
9695                                 goto out_free;
9696                         }
9697
9698                         /* ignore disabled channels */
9699                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9700                                 continue;
9701
9702                         request->channels[i] = chan;
9703                         i++;
9704                 }
9705         } else {
9706                 /* all channels */
9707                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9708                         int j;
9709
9710                         if (!wiphy->bands[band])
9711                                 continue;
9712                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9713                                 struct ieee80211_channel *chan;
9714
9715                                 chan = &wiphy->bands[band]->channels[j];
9716
9717                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9718                                         continue;
9719
9720                                 request->channels[i] = chan;
9721                                 i++;
9722                         }
9723                 }
9724         }
9725
9726         if (!i) {
9727                 err = -EINVAL;
9728                 goto out_free;
9729         }
9730
9731         request->n_channels = i;
9732
9733         i = 0;
9734         if (n_ssids) {
9735                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9736                                     tmp) {
9737                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9738                                 err = -EINVAL;
9739                                 goto out_free;
9740                         }
9741                         request->ssids[i].ssid_len = nla_len(attr);
9742                         memcpy(request->ssids[i].ssid, nla_data(attr),
9743                                nla_len(attr));
9744                         i++;
9745                 }
9746         }
9747
9748         i = 0;
9749         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9750                 nla_for_each_nested(attr,
9751                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9752                                     tmp) {
9753                         struct nlattr *ssid, *bssid, *rssi;
9754
9755                         err = nla_parse_nested_deprecated(tb,
9756                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9757                                                           attr,
9758                                                           nl80211_match_policy,
9759                                                           NULL);
9760                         if (err)
9761                                 goto out_free;
9762                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9763                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9764
9765                         if (!ssid && !bssid) {
9766                                 i++;
9767                                 continue;
9768                         }
9769
9770                         if (WARN_ON(i >= n_match_sets)) {
9771                                 /* this indicates a programming error,
9772                                  * the loop above should have verified
9773                                  * things properly
9774                                  */
9775                                 err = -EINVAL;
9776                                 goto out_free;
9777                         }
9778
9779                         if (ssid) {
9780                                 memcpy(request->match_sets[i].ssid.ssid,
9781                                        nla_data(ssid), nla_len(ssid));
9782                                 request->match_sets[i].ssid.ssid_len =
9783                                         nla_len(ssid);
9784                         }
9785                         if (bssid)
9786                                 memcpy(request->match_sets[i].bssid,
9787                                        nla_data(bssid), ETH_ALEN);
9788
9789                         /* special attribute - old implementation w/a */
9790                         request->match_sets[i].rssi_thold = default_match_rssi;
9791                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9792                         if (rssi)
9793                                 request->match_sets[i].rssi_thold =
9794                                         nla_get_s32(rssi);
9795
9796                         /* Parse per band RSSI attribute */
9797                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9798                                 &request->match_sets[i],
9799                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9800                                 request->match_sets[i].rssi_thold);
9801                         if (err)
9802                                 goto out_free;
9803
9804                         i++;
9805                 }
9806
9807                 /* there was no other matchset, so the RSSI one is alone */
9808                 if (i == 0 && n_match_sets)
9809                         request->match_sets[0].rssi_thold = default_match_rssi;
9810
9811                 request->min_rssi_thold = INT_MAX;
9812                 for (i = 0; i < n_match_sets; i++)
9813                         request->min_rssi_thold =
9814                                 min(request->match_sets[i].rssi_thold,
9815                                     request->min_rssi_thold);
9816         } else {
9817                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9818         }
9819
9820         if (ie_len) {
9821                 request->ie_len = ie_len;
9822                 memcpy((void *)request->ie,
9823                        nla_data(attrs[NL80211_ATTR_IE]),
9824                        request->ie_len);
9825         }
9826
9827         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9828         if (err)
9829                 goto out_free;
9830
9831         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9832                 request->delay =
9833                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9834
9835         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9836                 request->relative_rssi = nla_get_s8(
9837                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9838                 request->relative_rssi_set = true;
9839         }
9840
9841         if (request->relative_rssi_set &&
9842             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9843                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9844
9845                 rssi_adjust = nla_data(
9846                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9847                 request->rssi_adjust.band = rssi_adjust->band;
9848                 request->rssi_adjust.delta = rssi_adjust->delta;
9849                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9850                         err = -EINVAL;
9851                         goto out_free;
9852                 }
9853         }
9854
9855         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9856         if (err)
9857                 goto out_free;
9858
9859         request->scan_start = jiffies;
9860
9861         return request;
9862
9863 out_free:
9864         kfree(request);
9865         return ERR_PTR(err);
9866 }
9867
9868 static int nl80211_start_sched_scan(struct sk_buff *skb,
9869                                     struct genl_info *info)
9870 {
9871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9872         struct net_device *dev = info->user_ptr[1];
9873         struct wireless_dev *wdev = dev->ieee80211_ptr;
9874         struct cfg80211_sched_scan_request *sched_scan_req;
9875         bool want_multi;
9876         int err;
9877
9878         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9879                 return -EOPNOTSUPP;
9880
9881         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9882         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9883         if (err)
9884                 return err;
9885
9886         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9887                                                   info->attrs,
9888                                                   rdev->wiphy.max_match_sets);
9889
9890         err = PTR_ERR_OR_ZERO(sched_scan_req);
9891         if (err)
9892                 goto out_err;
9893
9894         /* leave request id zero for legacy request
9895          * or if driver does not support multi-scheduled scan
9896          */
9897         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9898                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9899
9900         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9901         if (err)
9902                 goto out_free;
9903
9904         sched_scan_req->dev = dev;
9905         sched_scan_req->wiphy = &rdev->wiphy;
9906
9907         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9908                 sched_scan_req->owner_nlportid = info->snd_portid;
9909
9910         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9911
9912         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9913         return 0;
9914
9915 out_free:
9916         kfree(sched_scan_req);
9917 out_err:
9918         return err;
9919 }
9920
9921 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9922                                    struct genl_info *info)
9923 {
9924         struct cfg80211_sched_scan_request *req;
9925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9926         u64 cookie;
9927
9928         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9929                 return -EOPNOTSUPP;
9930
9931         if (info->attrs[NL80211_ATTR_COOKIE]) {
9932                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9933                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9934         }
9935
9936         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9937                                      struct cfg80211_sched_scan_request,
9938                                      list);
9939         if (!req || req->reqid ||
9940             (req->owner_nlportid &&
9941              req->owner_nlportid != info->snd_portid))
9942                 return -ENOENT;
9943
9944         return cfg80211_stop_sched_scan_req(rdev, req, false);
9945 }
9946
9947 static int nl80211_start_radar_detection(struct sk_buff *skb,
9948                                          struct genl_info *info)
9949 {
9950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9951         struct net_device *dev = info->user_ptr[1];
9952         struct wireless_dev *wdev = dev->ieee80211_ptr;
9953         struct wiphy *wiphy = wdev->wiphy;
9954         struct cfg80211_chan_def chandef;
9955         enum nl80211_dfs_regions dfs_region;
9956         unsigned int cac_time_ms;
9957         int err = -EINVAL;
9958
9959         flush_delayed_work(&rdev->dfs_update_channels_wk);
9960
9961         wiphy_lock(wiphy);
9962
9963         dfs_region = reg_get_dfs_region(wiphy);
9964         if (dfs_region == NL80211_DFS_UNSET)
9965                 goto unlock;
9966
9967         err = nl80211_parse_chandef(rdev, info, &chandef);
9968         if (err)
9969                 goto unlock;
9970
9971         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9972         if (err < 0)
9973                 goto unlock;
9974
9975         if (err == 0) {
9976                 err = -EINVAL;
9977                 goto unlock;
9978         }
9979
9980         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9981                 err = -EINVAL;
9982                 goto unlock;
9983         }
9984
9985         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9986                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9987                                                                 &chandef);
9988                 goto unlock;
9989         }
9990
9991         if (netif_carrier_ok(dev)) {
9992                 err = -EBUSY;
9993                 goto unlock;
9994         }
9995
9996         if (wdev->cac_started) {
9997                 err = -EBUSY;
9998                 goto unlock;
9999         }
10000
10001         /* CAC start is offloaded to HW and can't be started manually */
10002         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
10003                 err = -EOPNOTSUPP;
10004                 goto unlock;
10005         }
10006
10007         if (!rdev->ops->start_radar_detection) {
10008                 err = -EOPNOTSUPP;
10009                 goto unlock;
10010         }
10011
10012         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
10013         if (WARN_ON(!cac_time_ms))
10014                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
10015
10016         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
10017         if (!err) {
10018                 wdev->links[0].ap.chandef = chandef;
10019                 wdev->cac_started = true;
10020                 wdev->cac_start_time = jiffies;
10021                 wdev->cac_time_ms = cac_time_ms;
10022         }
10023 unlock:
10024         wiphy_unlock(wiphy);
10025
10026         return err;
10027 }
10028
10029 static int nl80211_notify_radar_detection(struct sk_buff *skb,
10030                                           struct genl_info *info)
10031 {
10032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10033         struct net_device *dev = info->user_ptr[1];
10034         struct wireless_dev *wdev = dev->ieee80211_ptr;
10035         struct wiphy *wiphy = wdev->wiphy;
10036         struct cfg80211_chan_def chandef;
10037         enum nl80211_dfs_regions dfs_region;
10038         int err;
10039
10040         dfs_region = reg_get_dfs_region(wiphy);
10041         if (dfs_region == NL80211_DFS_UNSET) {
10042                 GENL_SET_ERR_MSG(info,
10043                                  "DFS Region is not set. Unexpected Radar indication");
10044                 return -EINVAL;
10045         }
10046
10047         err = nl80211_parse_chandef(rdev, info, &chandef);
10048         if (err) {
10049                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
10050                 return err;
10051         }
10052
10053         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
10054         if (err < 0) {
10055                 GENL_SET_ERR_MSG(info, "chandef is invalid");
10056                 return err;
10057         }
10058
10059         if (err == 0) {
10060                 GENL_SET_ERR_MSG(info,
10061                                  "Unexpected Radar indication for chandef/iftype");
10062                 return -EINVAL;
10063         }
10064
10065         /* Do not process this notification if radar is already detected
10066          * by kernel on this channel, and return success.
10067          */
10068         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
10069                 return 0;
10070
10071         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
10072
10073         cfg80211_sched_dfs_chan_update(rdev);
10074
10075         rdev->radar_chandef = chandef;
10076
10077         /* Propagate this notification to other radios as well */
10078         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
10079
10080         return 0;
10081 }
10082
10083 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
10084 {
10085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10086         unsigned int link_id = nl80211_link_id(info->attrs);
10087         struct net_device *dev = info->user_ptr[1];
10088         struct wireless_dev *wdev = dev->ieee80211_ptr;
10089         struct cfg80211_csa_settings params;
10090         struct nlattr **csa_attrs = NULL;
10091         int err;
10092         bool need_new_beacon = false;
10093         bool need_handle_dfs_flag = true;
10094         int len, i;
10095         u32 cs_count;
10096
10097         if (!rdev->ops->channel_switch ||
10098             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
10099                 return -EOPNOTSUPP;
10100
10101         switch (dev->ieee80211_ptr->iftype) {
10102         case NL80211_IFTYPE_AP:
10103         case NL80211_IFTYPE_P2P_GO:
10104                 need_new_beacon = true;
10105                 /* For all modes except AP the handle_dfs flag needs to be
10106                  * supplied to tell the kernel that userspace will handle radar
10107                  * events when they happen. Otherwise a switch to a channel
10108                  * requiring DFS will be rejected.
10109                  */
10110                 need_handle_dfs_flag = false;
10111
10112                 /* useless if AP is not running */
10113                 if (!wdev->links[link_id].ap.beacon_interval)
10114                         return -ENOTCONN;
10115                 break;
10116         case NL80211_IFTYPE_ADHOC:
10117                 if (!wdev->u.ibss.ssid_len)
10118                         return -ENOTCONN;
10119                 break;
10120         case NL80211_IFTYPE_MESH_POINT:
10121                 if (!wdev->u.mesh.id_len)
10122                         return -ENOTCONN;
10123                 break;
10124         default:
10125                 return -EOPNOTSUPP;
10126         }
10127
10128         memset(&params, 0, sizeof(params));
10129         params.beacon_csa.ftm_responder = -1;
10130
10131         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10132             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
10133                 return -EINVAL;
10134
10135         /* only important for AP, IBSS and mesh create IEs internally */
10136         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
10137                 return -EINVAL;
10138
10139         /* Even though the attribute is u32, the specification says
10140          * u8, so let's make sure we don't overflow.
10141          */
10142         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
10143         if (cs_count > 255)
10144                 return -EINVAL;
10145
10146         params.count = cs_count;
10147
10148         if (!need_new_beacon)
10149                 goto skip_beacons;
10150
10151         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after,
10152                                    info->extack);
10153         if (err)
10154                 goto free;
10155
10156         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
10157                             GFP_KERNEL);
10158         if (!csa_attrs) {
10159                 err = -ENOMEM;
10160                 goto free;
10161         }
10162
10163         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
10164                                           info->attrs[NL80211_ATTR_CSA_IES],
10165                                           nl80211_policy, info->extack);
10166         if (err)
10167                 goto free;
10168
10169         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa,
10170                                    info->extack);
10171         if (err)
10172                 goto free;
10173
10174         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
10175                 err = -EINVAL;
10176                 goto free;
10177         }
10178
10179         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10180         if (!len || (len % sizeof(u16))) {
10181                 err = -EINVAL;
10182                 goto free;
10183         }
10184
10185         params.n_counter_offsets_beacon = len / sizeof(u16);
10186         if (rdev->wiphy.max_num_csa_counters &&
10187             (params.n_counter_offsets_beacon >
10188              rdev->wiphy.max_num_csa_counters)) {
10189                 err = -EINVAL;
10190                 goto free;
10191         }
10192
10193         params.counter_offsets_beacon =
10194                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
10195
10196         /* sanity checks - counters should fit and be the same */
10197         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
10198                 u16 offset = params.counter_offsets_beacon[i];
10199
10200                 if (offset >= params.beacon_csa.tail_len) {
10201                         err = -EINVAL;
10202                         goto free;
10203                 }
10204
10205                 if (params.beacon_csa.tail[offset] != params.count) {
10206                         err = -EINVAL;
10207                         goto free;
10208                 }
10209         }
10210
10211         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
10212                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10213                 if (!len || (len % sizeof(u16))) {
10214                         err = -EINVAL;
10215                         goto free;
10216                 }
10217
10218                 params.n_counter_offsets_presp = len / sizeof(u16);
10219                 if (rdev->wiphy.max_num_csa_counters &&
10220                     (params.n_counter_offsets_presp >
10221                      rdev->wiphy.max_num_csa_counters)) {
10222                         err = -EINVAL;
10223                         goto free;
10224                 }
10225
10226                 params.counter_offsets_presp =
10227                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10228
10229                 /* sanity checks - counters should fit and be the same */
10230                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10231                         u16 offset = params.counter_offsets_presp[i];
10232
10233                         if (offset >= params.beacon_csa.probe_resp_len) {
10234                                 err = -EINVAL;
10235                                 goto free;
10236                         }
10237
10238                         if (params.beacon_csa.probe_resp[offset] !=
10239                             params.count) {
10240                                 err = -EINVAL;
10241                                 goto free;
10242                         }
10243                 }
10244         }
10245
10246 skip_beacons:
10247         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10248         if (err)
10249                 goto free;
10250
10251         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10252                                            wdev->iftype)) {
10253                 err = -EINVAL;
10254                 goto free;
10255         }
10256
10257         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10258                                             &params.chandef,
10259                                             wdev->iftype);
10260         if (err < 0)
10261                 goto free;
10262
10263         if (err > 0) {
10264                 params.radar_required = true;
10265                 if (need_handle_dfs_flag &&
10266                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10267                         err = -EINVAL;
10268                         goto free;
10269                 }
10270         }
10271
10272         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10273                 params.block_tx = true;
10274
10275         if (info->attrs[NL80211_ATTR_PUNCT_BITMAP]) {
10276                 err = nl80211_parse_punct_bitmap(rdev, info,
10277                                                  &params.chandef,
10278                                                  &params.punct_bitmap);
10279                 if (err)
10280                         goto free;
10281         }
10282
10283         err = rdev_channel_switch(rdev, dev, &params);
10284
10285 free:
10286         kfree(params.beacon_after.mbssid_ies);
10287         kfree(params.beacon_csa.mbssid_ies);
10288         kfree(params.beacon_after.rnr_ies);
10289         kfree(params.beacon_csa.rnr_ies);
10290         kfree(csa_attrs);
10291         return err;
10292 }
10293
10294 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10295                             u32 seq, int flags,
10296                             struct cfg80211_registered_device *rdev,
10297                             struct wireless_dev *wdev,
10298                             struct cfg80211_internal_bss *intbss)
10299 {
10300         struct cfg80211_bss *res = &intbss->pub;
10301         const struct cfg80211_bss_ies *ies;
10302         unsigned int link_id;
10303         void *hdr;
10304         struct nlattr *bss;
10305
10306         lockdep_assert_wiphy(wdev->wiphy);
10307
10308         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10309                              NL80211_CMD_NEW_SCAN_RESULTS);
10310         if (!hdr)
10311                 return -1;
10312
10313         genl_dump_check_consistent(cb, hdr);
10314
10315         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10316                 goto nla_put_failure;
10317         if (wdev->netdev &&
10318             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10319                 goto nla_put_failure;
10320         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10321                               NL80211_ATTR_PAD))
10322                 goto nla_put_failure;
10323
10324         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10325         if (!bss)
10326                 goto nla_put_failure;
10327         if ((!is_zero_ether_addr(res->bssid) &&
10328              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10329                 goto nla_put_failure;
10330
10331         rcu_read_lock();
10332         /* indicate whether we have probe response data or not */
10333         if (rcu_access_pointer(res->proberesp_ies) &&
10334             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10335                 goto fail_unlock_rcu;
10336
10337         /* this pointer prefers to be pointed to probe response data
10338          * but is always valid
10339          */
10340         ies = rcu_dereference(res->ies);
10341         if (ies) {
10342                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10343                                       NL80211_BSS_PAD))
10344                         goto fail_unlock_rcu;
10345                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10346                                         ies->len, ies->data))
10347                         goto fail_unlock_rcu;
10348         }
10349
10350         /* and this pointer is always (unless driver didn't know) beacon data */
10351         ies = rcu_dereference(res->beacon_ies);
10352         if (ies && ies->from_beacon) {
10353                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10354                                       NL80211_BSS_PAD))
10355                         goto fail_unlock_rcu;
10356                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10357                                         ies->len, ies->data))
10358                         goto fail_unlock_rcu;
10359         }
10360         rcu_read_unlock();
10361
10362         if (res->beacon_interval &&
10363             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10364                 goto nla_put_failure;
10365         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10366             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10367             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10368                         res->channel->freq_offset) ||
10369             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10370                         jiffies_to_msecs(jiffies - intbss->ts)))
10371                 goto nla_put_failure;
10372
10373         if (intbss->parent_tsf &&
10374             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10375                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10376              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10377                      intbss->parent_bssid)))
10378                 goto nla_put_failure;
10379
10380         if (intbss->ts_boottime &&
10381             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10382                               intbss->ts_boottime, NL80211_BSS_PAD))
10383                 goto nla_put_failure;
10384
10385         if (!nl80211_put_signal(msg, intbss->pub.chains,
10386                                 intbss->pub.chain_signal,
10387                                 NL80211_BSS_CHAIN_SIGNAL))
10388                 goto nla_put_failure;
10389
10390         switch (rdev->wiphy.signal_type) {
10391         case CFG80211_SIGNAL_TYPE_MBM:
10392                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10393                         goto nla_put_failure;
10394                 break;
10395         case CFG80211_SIGNAL_TYPE_UNSPEC:
10396                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10397                         goto nla_put_failure;
10398                 break;
10399         default:
10400                 break;
10401         }
10402
10403         switch (wdev->iftype) {
10404         case NL80211_IFTYPE_P2P_CLIENT:
10405         case NL80211_IFTYPE_STATION:
10406                 for_each_valid_link(wdev, link_id) {
10407                         if (intbss == wdev->links[link_id].client.current_bss &&
10408                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10409                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10410                              (wdev->valid_links &&
10411                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10412                                           link_id) ||
10413                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10414                                        wdev->u.client.connected_addr)))))
10415                                 goto nla_put_failure;
10416                 }
10417                 break;
10418         case NL80211_IFTYPE_ADHOC:
10419                 if (intbss == wdev->u.ibss.current_bss &&
10420                     nla_put_u32(msg, NL80211_BSS_STATUS,
10421                                 NL80211_BSS_STATUS_IBSS_JOINED))
10422                         goto nla_put_failure;
10423                 break;
10424         default:
10425                 break;
10426         }
10427
10428         if (nla_put_u32(msg, NL80211_BSS_USE_FOR, res->use_for))
10429                 goto nla_put_failure;
10430
10431         if (res->cannot_use_reasons &&
10432             nla_put_u64_64bit(msg, NL80211_BSS_CANNOT_USE_REASONS,
10433                               res->cannot_use_reasons,
10434                               NL80211_BSS_PAD))
10435                 goto nla_put_failure;
10436
10437         nla_nest_end(msg, bss);
10438
10439         genlmsg_end(msg, hdr);
10440         return 0;
10441
10442  fail_unlock_rcu:
10443         rcu_read_unlock();
10444  nla_put_failure:
10445         genlmsg_cancel(msg, hdr);
10446         return -EMSGSIZE;
10447 }
10448
10449 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10450 {
10451         struct cfg80211_registered_device *rdev;
10452         struct cfg80211_internal_bss *scan;
10453         struct wireless_dev *wdev;
10454         struct nlattr **attrbuf;
10455         int start = cb->args[2], idx = 0;
10456         bool dump_include_use_data;
10457         int err;
10458
10459         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10460         if (!attrbuf)
10461                 return -ENOMEM;
10462
10463         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10464         if (err) {
10465                 kfree(attrbuf);
10466                 return err;
10467         }
10468         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10469         __acquire(&rdev->wiphy.mtx);
10470
10471         dump_include_use_data =
10472                 attrbuf[NL80211_ATTR_BSS_DUMP_INCLUDE_USE_DATA];
10473         kfree(attrbuf);
10474
10475         spin_lock_bh(&rdev->bss_lock);
10476
10477         /*
10478          * dump_scan will be called multiple times to break up the scan results
10479          * into multiple messages.  It is unlikely that any more bss-es will be
10480          * expired after the first call, so only call only call this on the
10481          * first dump_scan invocation.
10482          */
10483         if (start == 0)
10484                 cfg80211_bss_expire(rdev);
10485
10486         cb->seq = rdev->bss_generation;
10487
10488         list_for_each_entry(scan, &rdev->bss_list, list) {
10489                 if (++idx <= start)
10490                         continue;
10491                 if (!dump_include_use_data &&
10492                     !(scan->pub.use_for & NL80211_BSS_USE_FOR_NORMAL))
10493                         continue;
10494                 if (nl80211_send_bss(skb, cb,
10495                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10496                                 rdev, wdev, scan) < 0) {
10497                         idx--;
10498                         break;
10499                 }
10500         }
10501
10502         spin_unlock_bh(&rdev->bss_lock);
10503
10504         cb->args[2] = idx;
10505         wiphy_unlock(&rdev->wiphy);
10506
10507         return skb->len;
10508 }
10509
10510 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10511                                int flags, struct net_device *dev,
10512                                bool allow_radio_stats,
10513                                struct survey_info *survey)
10514 {
10515         void *hdr;
10516         struct nlattr *infoattr;
10517
10518         /* skip radio stats if userspace didn't request them */
10519         if (!survey->channel && !allow_radio_stats)
10520                 return 0;
10521
10522         hdr = nl80211hdr_put(msg, portid, seq, flags,
10523                              NL80211_CMD_NEW_SURVEY_RESULTS);
10524         if (!hdr)
10525                 return -ENOMEM;
10526
10527         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10528                 goto nla_put_failure;
10529
10530         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10531         if (!infoattr)
10532                 goto nla_put_failure;
10533
10534         if (survey->channel &&
10535             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10536                         survey->channel->center_freq))
10537                 goto nla_put_failure;
10538
10539         if (survey->channel && survey->channel->freq_offset &&
10540             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10541                         survey->channel->freq_offset))
10542                 goto nla_put_failure;
10543
10544         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10545             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10546                 goto nla_put_failure;
10547         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10548             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10549                 goto nla_put_failure;
10550         if ((survey->filled & SURVEY_INFO_TIME) &&
10551             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10552                         survey->time, NL80211_SURVEY_INFO_PAD))
10553                 goto nla_put_failure;
10554         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10555             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10556                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10557                 goto nla_put_failure;
10558         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10559             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10560                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10561                 goto nla_put_failure;
10562         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10563             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10564                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10565                 goto nla_put_failure;
10566         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10567             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10568                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10569                 goto nla_put_failure;
10570         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10571             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10572                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10573                 goto nla_put_failure;
10574         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10575             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10576                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10577                 goto nla_put_failure;
10578
10579         nla_nest_end(msg, infoattr);
10580
10581         genlmsg_end(msg, hdr);
10582         return 0;
10583
10584  nla_put_failure:
10585         genlmsg_cancel(msg, hdr);
10586         return -EMSGSIZE;
10587 }
10588
10589 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10590 {
10591         struct nlattr **attrbuf;
10592         struct survey_info survey;
10593         struct cfg80211_registered_device *rdev;
10594         struct wireless_dev *wdev;
10595         int survey_idx = cb->args[2];
10596         int res;
10597         bool radio_stats;
10598
10599         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10600         if (!attrbuf)
10601                 return -ENOMEM;
10602
10603         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10604         if (res) {
10605                 kfree(attrbuf);
10606                 return res;
10607         }
10608         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10609         __acquire(&rdev->wiphy.mtx);
10610
10611         /* prepare_wdev_dump parsed the attributes */
10612         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10613
10614         if (!wdev->netdev) {
10615                 res = -EINVAL;
10616                 goto out_err;
10617         }
10618
10619         if (!rdev->ops->dump_survey) {
10620                 res = -EOPNOTSUPP;
10621                 goto out_err;
10622         }
10623
10624         while (1) {
10625                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10626                 if (res == -ENOENT)
10627                         break;
10628                 if (res)
10629                         goto out_err;
10630
10631                 /* don't send disabled channels, but do send non-channel data */
10632                 if (survey.channel &&
10633                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10634                         survey_idx++;
10635                         continue;
10636                 }
10637
10638                 if (nl80211_send_survey(skb,
10639                                 NETLINK_CB(cb->skb).portid,
10640                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10641                                 wdev->netdev, radio_stats, &survey) < 0)
10642                         goto out;
10643                 survey_idx++;
10644         }
10645
10646  out:
10647         cb->args[2] = survey_idx;
10648         res = skb->len;
10649  out_err:
10650         kfree(attrbuf);
10651         wiphy_unlock(&rdev->wiphy);
10652         return res;
10653 }
10654
10655 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10656 {
10657         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10658                                   NL80211_WPA_VERSION_2 |
10659                                   NL80211_WPA_VERSION_3));
10660 }
10661
10662 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10663 {
10664         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10665         struct net_device *dev = info->user_ptr[1];
10666         struct ieee80211_channel *chan;
10667         const u8 *bssid, *ssid;
10668         int err, ssid_len;
10669         enum nl80211_auth_type auth_type;
10670         struct key_parse key;
10671         bool local_state_change;
10672         struct cfg80211_auth_request req = {};
10673         u32 freq;
10674
10675         if (!info->attrs[NL80211_ATTR_MAC])
10676                 return -EINVAL;
10677
10678         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10679                 return -EINVAL;
10680
10681         if (!info->attrs[NL80211_ATTR_SSID])
10682                 return -EINVAL;
10683
10684         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10685                 return -EINVAL;
10686
10687         err = nl80211_parse_key(info, &key);
10688         if (err)
10689                 return err;
10690
10691         if (key.idx >= 0) {
10692                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10693                         return -EINVAL;
10694                 if (!key.p.key || !key.p.key_len)
10695                         return -EINVAL;
10696                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10697                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10698                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10699                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10700                         return -EINVAL;
10701                 if (key.idx > 3)
10702                         return -EINVAL;
10703         } else {
10704                 key.p.key_len = 0;
10705                 key.p.key = NULL;
10706         }
10707
10708         if (key.idx >= 0) {
10709                 int i;
10710                 bool ok = false;
10711
10712                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10713                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10714                                 ok = true;
10715                                 break;
10716                         }
10717                 }
10718                 if (!ok)
10719                         return -EINVAL;
10720         }
10721
10722         if (!rdev->ops->auth)
10723                 return -EOPNOTSUPP;
10724
10725         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10726             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10727                 return -EOPNOTSUPP;
10728
10729         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10730         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10731         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10732                 freq +=
10733                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10734
10735         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10736         if (!chan)
10737                 return -EINVAL;
10738
10739         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10740         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10741
10742         if (info->attrs[NL80211_ATTR_IE]) {
10743                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10744                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10745         }
10746
10747         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10748         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10749                 return -EINVAL;
10750
10751         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10752              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10753              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10754              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10755             !info->attrs[NL80211_ATTR_AUTH_DATA])
10756                 return -EINVAL;
10757
10758         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10759                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10760                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10761                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10762                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10763                         return -EINVAL;
10764                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10765                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10766         }
10767
10768         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10769
10770         /*
10771          * Since we no longer track auth state, ignore
10772          * requests to only change local state.
10773          */
10774         if (local_state_change)
10775                 return 0;
10776
10777         req.auth_type = auth_type;
10778         req.key = key.p.key;
10779         req.key_len = key.p.key_len;
10780         req.key_idx = key.idx;
10781         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10782         if (req.link_id >= 0) {
10783                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10784                         return -EINVAL;
10785                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10786                         return -EINVAL;
10787                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10788                 if (!is_valid_ether_addr(req.ap_mld_addr))
10789                         return -EINVAL;
10790         }
10791
10792         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10793                                    IEEE80211_BSS_TYPE_ESS,
10794                                    IEEE80211_PRIVACY_ANY);
10795         if (!req.bss)
10796                 return -ENOENT;
10797
10798         err = cfg80211_mlme_auth(rdev, dev, &req);
10799
10800         cfg80211_put_bss(&rdev->wiphy, req.bss);
10801
10802         return err;
10803 }
10804
10805 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10806                                      struct genl_info *info)
10807 {
10808         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10809                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10810                 return -EINVAL;
10811         }
10812
10813         if (!rdev->ops->tx_control_port ||
10814             !wiphy_ext_feature_isset(&rdev->wiphy,
10815                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10816                 return -EOPNOTSUPP;
10817
10818         return 0;
10819 }
10820
10821 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10822                                    struct genl_info *info,
10823                                    struct cfg80211_crypto_settings *settings,
10824                                    int cipher_limit)
10825 {
10826         memset(settings, 0, sizeof(*settings));
10827
10828         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10829
10830         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10831                 u16 proto;
10832
10833                 proto = nla_get_u16(
10834                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10835                 settings->control_port_ethertype = cpu_to_be16(proto);
10836                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10837                     proto != ETH_P_PAE)
10838                         return -EINVAL;
10839                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10840                         settings->control_port_no_encrypt = true;
10841         } else
10842                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10843
10844         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10845                 int r = validate_pae_over_nl80211(rdev, info);
10846
10847                 if (r < 0)
10848                         return r;
10849
10850                 settings->control_port_over_nl80211 = true;
10851
10852                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10853                         settings->control_port_no_preauth = true;
10854         }
10855
10856         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10857                 void *data;
10858                 int len, i;
10859
10860                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10861                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10862                 settings->n_ciphers_pairwise = len / sizeof(u32);
10863
10864                 if (len % sizeof(u32))
10865                         return -EINVAL;
10866
10867                 if (settings->n_ciphers_pairwise > cipher_limit)
10868                         return -EINVAL;
10869
10870                 memcpy(settings->ciphers_pairwise, data, len);
10871
10872                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10873                         if (!cfg80211_supported_cipher_suite(
10874                                         &rdev->wiphy,
10875                                         settings->ciphers_pairwise[i]))
10876                                 return -EINVAL;
10877         }
10878
10879         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10880                 settings->cipher_group =
10881                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10882                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10883                                                      settings->cipher_group))
10884                         return -EINVAL;
10885         }
10886
10887         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10888                 settings->wpa_versions =
10889                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10890                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10891                         return -EINVAL;
10892         }
10893
10894         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10895                 void *data;
10896                 int len;
10897
10898                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10899                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10900                 settings->n_akm_suites = len / sizeof(u32);
10901
10902                 if (len % sizeof(u32))
10903                         return -EINVAL;
10904
10905                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10906                         return -EINVAL;
10907
10908                 memcpy(settings->akm_suites, data, len);
10909         }
10910
10911         if (info->attrs[NL80211_ATTR_PMK]) {
10912                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10913                         return -EINVAL;
10914                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10915                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10916                     !wiphy_ext_feature_isset(&rdev->wiphy,
10917                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10918                         return -EINVAL;
10919                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10920         }
10921
10922         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10923                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10924                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10925                     !wiphy_ext_feature_isset(&rdev->wiphy,
10926                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10927                         return -EINVAL;
10928                 settings->sae_pwd =
10929                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10930                 settings->sae_pwd_len =
10931                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10932         }
10933
10934         if (info->attrs[NL80211_ATTR_SAE_PWE])
10935                 settings->sae_pwe =
10936                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10937         else
10938                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10939
10940         return 0;
10941 }
10942
10943 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10944                                               const u8 *ssid, int ssid_len,
10945                                               struct nlattr **attrs,
10946                                               int assoc_link_id, int link_id)
10947 {
10948         struct ieee80211_channel *chan;
10949         struct cfg80211_bss *bss;
10950         const u8 *bssid;
10951         u32 freq, use_for = 0;
10952
10953         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10954                 return ERR_PTR(-EINVAL);
10955
10956         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10957
10958         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10959         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10960                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10961
10962         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10963         if (!chan)
10964                 return ERR_PTR(-EINVAL);
10965
10966         if (assoc_link_id >= 0)
10967                 use_for = NL80211_BSS_USE_FOR_MLD_LINK;
10968         if (assoc_link_id == link_id)
10969                 use_for |= NL80211_BSS_USE_FOR_NORMAL;
10970
10971         bss = __cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10972                                  ssid, ssid_len,
10973                                  IEEE80211_BSS_TYPE_ESS,
10974                                  IEEE80211_PRIVACY_ANY,
10975                                  use_for);
10976         if (!bss)
10977                 return ERR_PTR(-ENOENT);
10978
10979         return bss;
10980 }
10981
10982 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10983 {
10984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10985         struct net_device *dev = info->user_ptr[1];
10986         struct cfg80211_assoc_request req = {};
10987         struct nlattr **attrs = NULL;
10988         const u8 *ap_addr, *ssid;
10989         unsigned int link_id;
10990         int err, ssid_len;
10991
10992         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10993             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10994                 return -EPERM;
10995
10996         if (!info->attrs[NL80211_ATTR_SSID])
10997                 return -EINVAL;
10998
10999         if (!rdev->ops->assoc)
11000                 return -EOPNOTSUPP;
11001
11002         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11003             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11004                 return -EOPNOTSUPP;
11005
11006         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11007         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11008
11009         if (info->attrs[NL80211_ATTR_IE]) {
11010                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11011                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11012
11013                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11014                                            req.ie, req.ie_len)) {
11015                         NL_SET_ERR_MSG_ATTR(info->extack,
11016                                             info->attrs[NL80211_ATTR_IE],
11017                                             "non-inheritance makes no sense");
11018                         return -EINVAL;
11019                 }
11020         }
11021
11022         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11023                 enum nl80211_mfp mfp =
11024                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11025                 if (mfp == NL80211_MFP_REQUIRED)
11026                         req.use_mfp = true;
11027                 else if (mfp != NL80211_MFP_NO)
11028                         return -EINVAL;
11029         }
11030
11031         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11032                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11033
11034         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11035                 req.flags |= ASSOC_REQ_DISABLE_HT;
11036
11037         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11038                 memcpy(&req.ht_capa_mask,
11039                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11040                        sizeof(req.ht_capa_mask));
11041
11042         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11043                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11044                         return -EINVAL;
11045                 memcpy(&req.ht_capa,
11046                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11047                        sizeof(req.ht_capa));
11048         }
11049
11050         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11051                 req.flags |= ASSOC_REQ_DISABLE_VHT;
11052
11053         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11054                 req.flags |= ASSOC_REQ_DISABLE_HE;
11055
11056         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11057                 req.flags |= ASSOC_REQ_DISABLE_EHT;
11058
11059         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11060                 memcpy(&req.vht_capa_mask,
11061                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11062                        sizeof(req.vht_capa_mask));
11063
11064         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11065                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11066                         return -EINVAL;
11067                 memcpy(&req.vht_capa,
11068                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11069                        sizeof(req.vht_capa));
11070         }
11071
11072         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11073                 if (!((rdev->wiphy.features &
11074                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11075                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11076                     !wiphy_ext_feature_isset(&rdev->wiphy,
11077                                              NL80211_EXT_FEATURE_RRM))
11078                         return -EINVAL;
11079                 req.flags |= ASSOC_REQ_USE_RRM;
11080         }
11081
11082         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
11083                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
11084                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
11085                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
11086                         return -EINVAL;
11087                 req.fils_nonces =
11088                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
11089         }
11090
11091         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
11092                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
11093                         return -EINVAL;
11094                 memcpy(&req.s1g_capa_mask,
11095                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
11096                        sizeof(req.s1g_capa_mask));
11097         }
11098
11099         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
11100                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
11101                         return -EINVAL;
11102                 memcpy(&req.s1g_capa,
11103                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
11104                        sizeof(req.s1g_capa));
11105         }
11106
11107         req.link_id = nl80211_link_id_or_invalid(info->attrs);
11108
11109         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11110                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
11111                 struct nlattr *link;
11112                 int rem = 0;
11113
11114                 if (req.link_id < 0)
11115                         return -EINVAL;
11116
11117                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
11118                         return -EINVAL;
11119
11120                 if (info->attrs[NL80211_ATTR_MAC] ||
11121                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11122                     !info->attrs[NL80211_ATTR_MLD_ADDR])
11123                         return -EINVAL;
11124
11125                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
11126                 ap_addr = req.ap_mld_addr;
11127
11128                 attrs = kzalloc(attrsize, GFP_KERNEL);
11129                 if (!attrs)
11130                         return -ENOMEM;
11131
11132                 nla_for_each_nested(link,
11133                                     info->attrs[NL80211_ATTR_MLO_LINKS],
11134                                     rem) {
11135                         memset(attrs, 0, attrsize);
11136
11137                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
11138                                          link, NULL, NULL);
11139
11140                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
11141                                 err = -EINVAL;
11142                                 NL_SET_BAD_ATTR(info->extack, link);
11143                                 goto free;
11144                         }
11145
11146                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
11147                         /* cannot use the same link ID again */
11148                         if (req.links[link_id].bss) {
11149                                 err = -EINVAL;
11150                                 NL_SET_BAD_ATTR(info->extack, link);
11151                                 goto free;
11152                         }
11153                         req.links[link_id].bss =
11154                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs,
11155                                                   req.link_id, link_id);
11156                         if (IS_ERR(req.links[link_id].bss)) {
11157                                 err = PTR_ERR(req.links[link_id].bss);
11158                                 req.links[link_id].bss = NULL;
11159                                 NL_SET_ERR_MSG_ATTR(info->extack,
11160                                                     link, "Error fetching BSS for link");
11161                                 goto free;
11162                         }
11163
11164                         if (attrs[NL80211_ATTR_IE]) {
11165                                 req.links[link_id].elems =
11166                                         nla_data(attrs[NL80211_ATTR_IE]);
11167                                 req.links[link_id].elems_len =
11168                                         nla_len(attrs[NL80211_ATTR_IE]);
11169
11170                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
11171                                                        req.links[link_id].elems,
11172                                                        req.links[link_id].elems_len)) {
11173                                         NL_SET_ERR_MSG_ATTR(info->extack,
11174                                                             attrs[NL80211_ATTR_IE],
11175                                                             "cannot deal with fragmentation");
11176                                         err = -EINVAL;
11177                                         goto free;
11178                                 }
11179
11180                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
11181                                                            req.links[link_id].elems,
11182                                                            req.links[link_id].elems_len)) {
11183                                         NL_SET_ERR_MSG_ATTR(info->extack,
11184                                                             attrs[NL80211_ATTR_IE],
11185                                                             "cannot deal with non-inheritance");
11186                                         err = -EINVAL;
11187                                         goto free;
11188                                 }
11189                         }
11190
11191                         req.links[link_id].disabled =
11192                                 nla_get_flag(attrs[NL80211_ATTR_MLO_LINK_DISABLED]);
11193                 }
11194
11195                 if (!req.links[req.link_id].bss) {
11196                         err = -EINVAL;
11197                         goto free;
11198                 }
11199
11200                 if (req.links[req.link_id].elems_len) {
11201                         GENL_SET_ERR_MSG(info,
11202                                          "cannot have per-link elems on assoc link");
11203                         err = -EINVAL;
11204                         goto free;
11205                 }
11206
11207                 if (req.links[req.link_id].disabled) {
11208                         GENL_SET_ERR_MSG(info,
11209                                          "cannot have assoc link disabled");
11210                         err = -EINVAL;
11211                         goto free;
11212                 }
11213
11214                 kfree(attrs);
11215                 attrs = NULL;
11216         } else {
11217                 if (req.link_id >= 0)
11218                         return -EINVAL;
11219
11220                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs,
11221                                             -1, -1);
11222                 if (IS_ERR(req.bss))
11223                         return PTR_ERR(req.bss);
11224                 ap_addr = req.bss->bssid;
11225         }
11226
11227         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
11228         if (!err) {
11229                 struct nlattr *link;
11230                 int rem = 0;
11231
11232                 err = cfg80211_mlme_assoc(rdev, dev, &req);
11233
11234                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11235                         dev->ieee80211_ptr->conn_owner_nlportid =
11236                                 info->snd_portid;
11237                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11238                                ap_addr, ETH_ALEN);
11239                 }
11240
11241                 /* Report error from first problematic link */
11242                 if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
11243                         nla_for_each_nested(link,
11244                                             info->attrs[NL80211_ATTR_MLO_LINKS],
11245                                             rem) {
11246                                 struct nlattr *link_id_attr =
11247                                         nla_find_nested(link, NL80211_ATTR_MLO_LINK_ID);
11248
11249                                 if (!link_id_attr)
11250                                         continue;
11251
11252                                 link_id = nla_get_u8(link_id_attr);
11253
11254                                 if (link_id == req.link_id)
11255                                         continue;
11256
11257                                 if (!req.links[link_id].error ||
11258                                     WARN_ON(req.links[link_id].error > 0))
11259                                         continue;
11260
11261                                 WARN_ON(err >= 0);
11262
11263                                 NL_SET_BAD_ATTR(info->extack, link);
11264                                 err = req.links[link_id].error;
11265                                 break;
11266                         }
11267                 }
11268         }
11269
11270 free:
11271         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
11272                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
11273         cfg80211_put_bss(&rdev->wiphy, req.bss);
11274         kfree(attrs);
11275
11276         return err;
11277 }
11278
11279 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
11280 {
11281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11282         struct net_device *dev = info->user_ptr[1];
11283         const u8 *ie = NULL, *bssid;
11284         int ie_len = 0;
11285         u16 reason_code;
11286         bool local_state_change;
11287
11288         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11289             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11290                 return -EPERM;
11291
11292         if (!info->attrs[NL80211_ATTR_MAC])
11293                 return -EINVAL;
11294
11295         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11296                 return -EINVAL;
11297
11298         if (!rdev->ops->deauth)
11299                 return -EOPNOTSUPP;
11300
11301         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11302             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11303                 return -EOPNOTSUPP;
11304
11305         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11306
11307         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11308         if (reason_code == 0) {
11309                 /* Reason Code 0 is reserved */
11310                 return -EINVAL;
11311         }
11312
11313         if (info->attrs[NL80211_ATTR_IE]) {
11314                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11315                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11316         }
11317
11318         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11319
11320         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11321                                     local_state_change);
11322 }
11323
11324 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11325 {
11326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11327         struct net_device *dev = info->user_ptr[1];
11328         const u8 *ie = NULL, *bssid;
11329         int ie_len = 0;
11330         u16 reason_code;
11331         bool local_state_change;
11332
11333         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11334             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11335                 return -EPERM;
11336
11337         if (!info->attrs[NL80211_ATTR_MAC])
11338                 return -EINVAL;
11339
11340         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11341                 return -EINVAL;
11342
11343         if (!rdev->ops->disassoc)
11344                 return -EOPNOTSUPP;
11345
11346         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11347             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11348                 return -EOPNOTSUPP;
11349
11350         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11351
11352         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11353         if (reason_code == 0) {
11354                 /* Reason Code 0 is reserved */
11355                 return -EINVAL;
11356         }
11357
11358         if (info->attrs[NL80211_ATTR_IE]) {
11359                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11360                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11361         }
11362
11363         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11364
11365         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11366                                       local_state_change);
11367 }
11368
11369 static bool
11370 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11371                          int mcast_rate[NUM_NL80211_BANDS],
11372                          int rateval)
11373 {
11374         struct wiphy *wiphy = &rdev->wiphy;
11375         bool found = false;
11376         int band, i;
11377
11378         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11379                 struct ieee80211_supported_band *sband;
11380
11381                 sband = wiphy->bands[band];
11382                 if (!sband)
11383                         continue;
11384
11385                 for (i = 0; i < sband->n_bitrates; i++) {
11386                         if (sband->bitrates[i].bitrate == rateval) {
11387                                 mcast_rate[band] = i + 1;
11388                                 found = true;
11389                                 break;
11390                         }
11391                 }
11392         }
11393
11394         return found;
11395 }
11396
11397 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11398 {
11399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11400         struct net_device *dev = info->user_ptr[1];
11401         struct cfg80211_ibss_params ibss;
11402         struct wiphy *wiphy;
11403         struct cfg80211_cached_keys *connkeys = NULL;
11404         int err;
11405
11406         memset(&ibss, 0, sizeof(ibss));
11407
11408         if (!info->attrs[NL80211_ATTR_SSID] ||
11409             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11410                 return -EINVAL;
11411
11412         ibss.beacon_interval = 100;
11413
11414         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11415                 ibss.beacon_interval =
11416                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11417
11418         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11419                                            ibss.beacon_interval);
11420         if (err)
11421                 return err;
11422
11423         if (!rdev->ops->join_ibss)
11424                 return -EOPNOTSUPP;
11425
11426         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11427                 return -EOPNOTSUPP;
11428
11429         wiphy = &rdev->wiphy;
11430
11431         if (info->attrs[NL80211_ATTR_MAC]) {
11432                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11433
11434                 if (!is_valid_ether_addr(ibss.bssid))
11435                         return -EINVAL;
11436         }
11437         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11438         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11439
11440         if (info->attrs[NL80211_ATTR_IE]) {
11441                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11442                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11443         }
11444
11445         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11446         if (err)
11447                 return err;
11448
11449         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11450                                      NL80211_IFTYPE_ADHOC))
11451                 return -EINVAL;
11452
11453         switch (ibss.chandef.width) {
11454         case NL80211_CHAN_WIDTH_5:
11455         case NL80211_CHAN_WIDTH_10:
11456         case NL80211_CHAN_WIDTH_20_NOHT:
11457                 break;
11458         case NL80211_CHAN_WIDTH_20:
11459         case NL80211_CHAN_WIDTH_40:
11460                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11461                         return -EINVAL;
11462                 break;
11463         case NL80211_CHAN_WIDTH_80:
11464         case NL80211_CHAN_WIDTH_80P80:
11465         case NL80211_CHAN_WIDTH_160:
11466                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11467                         return -EINVAL;
11468                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11469                                              NL80211_EXT_FEATURE_VHT_IBSS))
11470                         return -EINVAL;
11471                 break;
11472         case NL80211_CHAN_WIDTH_320:
11473                 return -EINVAL;
11474         default:
11475                 return -EINVAL;
11476         }
11477
11478         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11479         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11480
11481         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11482                 u8 *rates =
11483                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11484                 int n_rates =
11485                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11486                 struct ieee80211_supported_band *sband =
11487                         wiphy->bands[ibss.chandef.chan->band];
11488
11489                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11490                                              &ibss.basic_rates);
11491                 if (err)
11492                         return err;
11493         }
11494
11495         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11496                 memcpy(&ibss.ht_capa_mask,
11497                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11498                        sizeof(ibss.ht_capa_mask));
11499
11500         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11501                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11502                         return -EINVAL;
11503                 memcpy(&ibss.ht_capa,
11504                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11505                        sizeof(ibss.ht_capa));
11506         }
11507
11508         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11509             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11510                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11511                 return -EINVAL;
11512
11513         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11514                 bool no_ht = false;
11515
11516                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11517                 if (IS_ERR(connkeys))
11518                         return PTR_ERR(connkeys);
11519
11520                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11521                     no_ht) {
11522                         kfree_sensitive(connkeys);
11523                         return -EINVAL;
11524                 }
11525         }
11526
11527         ibss.control_port =
11528                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11529
11530         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11531                 int r = validate_pae_over_nl80211(rdev, info);
11532
11533                 if (r < 0) {
11534                         kfree_sensitive(connkeys);
11535                         return r;
11536                 }
11537
11538                 ibss.control_port_over_nl80211 = true;
11539         }
11540
11541         ibss.userspace_handles_dfs =
11542                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11543
11544         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11545         if (err)
11546                 kfree_sensitive(connkeys);
11547         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11548                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11549
11550         return err;
11551 }
11552
11553 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11554 {
11555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11556         struct net_device *dev = info->user_ptr[1];
11557
11558         if (!rdev->ops->leave_ibss)
11559                 return -EOPNOTSUPP;
11560
11561         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11562                 return -EOPNOTSUPP;
11563
11564         return cfg80211_leave_ibss(rdev, dev, false);
11565 }
11566
11567 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
11568 {
11569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11570         struct net_device *dev = info->user_ptr[1];
11571         int mcast_rate[NUM_NL80211_BANDS];
11572         u32 nla_rate;
11573
11574         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11575             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11576             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11577                 return -EOPNOTSUPP;
11578
11579         if (!rdev->ops->set_mcast_rate)
11580                 return -EOPNOTSUPP;
11581
11582         memset(mcast_rate, 0, sizeof(mcast_rate));
11583
11584         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11585                 return -EINVAL;
11586
11587         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11588         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11589                 return -EINVAL;
11590
11591         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11592 }
11593
11594 static struct sk_buff *
11595 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11596                             struct wireless_dev *wdev, int approxlen,
11597                             u32 portid, u32 seq, enum nl80211_commands cmd,
11598                             enum nl80211_attrs attr,
11599                             const struct nl80211_vendor_cmd_info *info,
11600                             gfp_t gfp)
11601 {
11602         struct sk_buff *skb;
11603         void *hdr;
11604         struct nlattr *data;
11605
11606         skb = nlmsg_new(approxlen + 100, gfp);
11607         if (!skb)
11608                 return NULL;
11609
11610         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11611         if (!hdr) {
11612                 kfree_skb(skb);
11613                 return NULL;
11614         }
11615
11616         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11617                 goto nla_put_failure;
11618
11619         if (info) {
11620                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11621                                 info->vendor_id))
11622                         goto nla_put_failure;
11623                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11624                                 info->subcmd))
11625                         goto nla_put_failure;
11626         }
11627
11628         if (wdev) {
11629                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11630                                       wdev_id(wdev), NL80211_ATTR_PAD))
11631                         goto nla_put_failure;
11632                 if (wdev->netdev &&
11633                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11634                                 wdev->netdev->ifindex))
11635                         goto nla_put_failure;
11636         }
11637
11638         data = nla_nest_start_noflag(skb, attr);
11639         if (!data)
11640                 goto nla_put_failure;
11641
11642         ((void **)skb->cb)[0] = rdev;
11643         ((void **)skb->cb)[1] = hdr;
11644         ((void **)skb->cb)[2] = data;
11645
11646         return skb;
11647
11648  nla_put_failure:
11649         kfree_skb(skb);
11650         return NULL;
11651 }
11652
11653 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11654                                            struct wireless_dev *wdev,
11655                                            enum nl80211_commands cmd,
11656                                            enum nl80211_attrs attr,
11657                                            unsigned int portid,
11658                                            int vendor_event_idx,
11659                                            int approxlen, gfp_t gfp)
11660 {
11661         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11662         const struct nl80211_vendor_cmd_info *info;
11663
11664         switch (cmd) {
11665         case NL80211_CMD_TESTMODE:
11666                 if (WARN_ON(vendor_event_idx != -1))
11667                         return NULL;
11668                 info = NULL;
11669                 break;
11670         case NL80211_CMD_VENDOR:
11671                 if (WARN_ON(vendor_event_idx < 0 ||
11672                             vendor_event_idx >= wiphy->n_vendor_events))
11673                         return NULL;
11674                 info = &wiphy->vendor_events[vendor_event_idx];
11675                 break;
11676         default:
11677                 WARN_ON(1);
11678                 return NULL;
11679         }
11680
11681         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11682                                            cmd, attr, info, gfp);
11683 }
11684 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11685
11686 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11687 {
11688         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11689         void *hdr = ((void **)skb->cb)[1];
11690         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11691         struct nlattr *data = ((void **)skb->cb)[2];
11692         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11693
11694         /* clear CB data for netlink core to own from now on */
11695         memset(skb->cb, 0, sizeof(skb->cb));
11696
11697         nla_nest_end(skb, data);
11698         genlmsg_end(skb, hdr);
11699
11700         if (nlhdr->nlmsg_pid) {
11701                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11702                                 nlhdr->nlmsg_pid);
11703         } else {
11704                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11705                         mcgrp = NL80211_MCGRP_VENDOR;
11706
11707                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11708                                         skb, 0, mcgrp, gfp);
11709         }
11710 }
11711 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11712
11713 #ifdef CONFIG_NL80211_TESTMODE
11714 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11715 {
11716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11717         struct wireless_dev *wdev;
11718         int err;
11719
11720         lockdep_assert_held(&rdev->wiphy.mtx);
11721
11722         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11723                                           info->attrs);
11724
11725         if (!rdev->ops->testmode_cmd)
11726                 return -EOPNOTSUPP;
11727
11728         if (IS_ERR(wdev)) {
11729                 err = PTR_ERR(wdev);
11730                 if (err != -EINVAL)
11731                         return err;
11732                 wdev = NULL;
11733         } else if (wdev->wiphy != &rdev->wiphy) {
11734                 return -EINVAL;
11735         }
11736
11737         if (!info->attrs[NL80211_ATTR_TESTDATA])
11738                 return -EINVAL;
11739
11740         rdev->cur_cmd_info = info;
11741         err = rdev_testmode_cmd(rdev, wdev,
11742                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11743                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11744         rdev->cur_cmd_info = NULL;
11745
11746         return err;
11747 }
11748
11749 static int nl80211_testmode_dump(struct sk_buff *skb,
11750                                  struct netlink_callback *cb)
11751 {
11752         struct cfg80211_registered_device *rdev;
11753         struct nlattr **attrbuf = NULL;
11754         int err;
11755         long phy_idx;
11756         void *data = NULL;
11757         int data_len = 0;
11758
11759         rtnl_lock();
11760
11761         if (cb->args[0]) {
11762                 /*
11763                  * 0 is a valid index, but not valid for args[0],
11764                  * so we need to offset by 1.
11765                  */
11766                 phy_idx = cb->args[0] - 1;
11767
11768                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11769                 if (!rdev) {
11770                         err = -ENOENT;
11771                         goto out_err;
11772                 }
11773         } else {
11774                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11775                                   GFP_KERNEL);
11776                 if (!attrbuf) {
11777                         err = -ENOMEM;
11778                         goto out_err;
11779                 }
11780
11781                 err = nlmsg_parse_deprecated(cb->nlh,
11782                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11783                                              attrbuf, nl80211_fam.maxattr,
11784                                              nl80211_policy, NULL);
11785                 if (err)
11786                         goto out_err;
11787
11788                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11789                 if (IS_ERR(rdev)) {
11790                         err = PTR_ERR(rdev);
11791                         goto out_err;
11792                 }
11793                 phy_idx = rdev->wiphy_idx;
11794
11795                 if (attrbuf[NL80211_ATTR_TESTDATA])
11796                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11797         }
11798
11799         if (cb->args[1]) {
11800                 data = nla_data((void *)cb->args[1]);
11801                 data_len = nla_len((void *)cb->args[1]);
11802         }
11803
11804         if (!rdev->ops->testmode_dump) {
11805                 err = -EOPNOTSUPP;
11806                 goto out_err;
11807         }
11808
11809         while (1) {
11810                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11811                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11812                                            NL80211_CMD_TESTMODE);
11813                 struct nlattr *tmdata;
11814
11815                 if (!hdr)
11816                         break;
11817
11818                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11819                         genlmsg_cancel(skb, hdr);
11820                         break;
11821                 }
11822
11823                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11824                 if (!tmdata) {
11825                         genlmsg_cancel(skb, hdr);
11826                         break;
11827                 }
11828                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11829                 nla_nest_end(skb, tmdata);
11830
11831                 if (err == -ENOBUFS || err == -ENOENT) {
11832                         genlmsg_cancel(skb, hdr);
11833                         break;
11834                 } else if (err) {
11835                         genlmsg_cancel(skb, hdr);
11836                         goto out_err;
11837                 }
11838
11839                 genlmsg_end(skb, hdr);
11840         }
11841
11842         err = skb->len;
11843         /* see above */
11844         cb->args[0] = phy_idx + 1;
11845  out_err:
11846         kfree(attrbuf);
11847         rtnl_unlock();
11848         return err;
11849 }
11850 #endif
11851
11852 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11853 {
11854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11855         struct net_device *dev = info->user_ptr[1];
11856         struct cfg80211_connect_params connect;
11857         struct wiphy *wiphy;
11858         struct cfg80211_cached_keys *connkeys = NULL;
11859         u32 freq = 0;
11860         int err;
11861
11862         memset(&connect, 0, sizeof(connect));
11863
11864         if (!info->attrs[NL80211_ATTR_SSID] ||
11865             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11866                 return -EINVAL;
11867
11868         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11869                 connect.auth_type =
11870                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11871                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11872                                              NL80211_CMD_CONNECT))
11873                         return -EINVAL;
11874         } else
11875                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11876
11877         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11878
11879         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11880             !wiphy_ext_feature_isset(&rdev->wiphy,
11881                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11882                 return -EINVAL;
11883         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11884
11885         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11886                                       NL80211_MAX_NR_CIPHER_SUITES);
11887         if (err)
11888                 return err;
11889
11890         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11891             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11892                 return -EOPNOTSUPP;
11893
11894         wiphy = &rdev->wiphy;
11895
11896         connect.bg_scan_period = -1;
11897         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11898                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11899                 connect.bg_scan_period =
11900                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11901         }
11902
11903         if (info->attrs[NL80211_ATTR_MAC])
11904                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11905         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11906                 connect.bssid_hint =
11907                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11908         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11909         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11910
11911         if (info->attrs[NL80211_ATTR_IE]) {
11912                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11913                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11914         }
11915
11916         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11917                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11918                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11919                     !wiphy_ext_feature_isset(&rdev->wiphy,
11920                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11921                         return -EOPNOTSUPP;
11922         } else {
11923                 connect.mfp = NL80211_MFP_NO;
11924         }
11925
11926         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11927                 connect.prev_bssid =
11928                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11929
11930         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11931                 freq = MHZ_TO_KHZ(nla_get_u32(
11932                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11933         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11934                 freq +=
11935                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11936
11937         if (freq) {
11938                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11939                 if (!connect.channel)
11940                         return -EINVAL;
11941         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11942                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11943                 freq = MHZ_TO_KHZ(freq);
11944                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11945                 if (!connect.channel_hint)
11946                         return -EINVAL;
11947         }
11948
11949         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11950                 connect.edmg.channels =
11951                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11952
11953                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11954                         connect.edmg.bw_config =
11955                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11956         }
11957
11958         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11959                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11960                 if (IS_ERR(connkeys))
11961                         return PTR_ERR(connkeys);
11962         }
11963
11964         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11965                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11966
11967         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11968                 memcpy(&connect.ht_capa_mask,
11969                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11970                        sizeof(connect.ht_capa_mask));
11971
11972         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11973                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11974                         kfree_sensitive(connkeys);
11975                         return -EINVAL;
11976                 }
11977                 memcpy(&connect.ht_capa,
11978                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11979                        sizeof(connect.ht_capa));
11980         }
11981
11982         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11983                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11984
11985         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11986                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11987
11988         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11989                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11990
11991         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11992                 memcpy(&connect.vht_capa_mask,
11993                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11994                        sizeof(connect.vht_capa_mask));
11995
11996         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11997                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11998                         kfree_sensitive(connkeys);
11999                         return -EINVAL;
12000                 }
12001                 memcpy(&connect.vht_capa,
12002                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
12003                        sizeof(connect.vht_capa));
12004         }
12005
12006         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
12007                 if (!((rdev->wiphy.features &
12008                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
12009                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
12010                     !wiphy_ext_feature_isset(&rdev->wiphy,
12011                                              NL80211_EXT_FEATURE_RRM)) {
12012                         kfree_sensitive(connkeys);
12013                         return -EINVAL;
12014                 }
12015                 connect.flags |= ASSOC_REQ_USE_RRM;
12016         }
12017
12018         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
12019         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
12020                 kfree_sensitive(connkeys);
12021                 return -EOPNOTSUPP;
12022         }
12023
12024         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
12025                 /* bss selection makes no sense if bssid is set */
12026                 if (connect.bssid) {
12027                         kfree_sensitive(connkeys);
12028                         return -EINVAL;
12029                 }
12030
12031                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
12032                                        wiphy, &connect.bss_select);
12033                 if (err) {
12034                         kfree_sensitive(connkeys);
12035                         return err;
12036                 }
12037         }
12038
12039         if (wiphy_ext_feature_isset(&rdev->wiphy,
12040                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
12041             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12042             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12043             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12044             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12045                 connect.fils_erp_username =
12046                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12047                 connect.fils_erp_username_len =
12048                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12049                 connect.fils_erp_realm =
12050                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12051                 connect.fils_erp_realm_len =
12052                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12053                 connect.fils_erp_next_seq_num =
12054                         nla_get_u16(
12055                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12056                 connect.fils_erp_rrk =
12057                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12058                 connect.fils_erp_rrk_len =
12059                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12060         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12061                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12062                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12063                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12064                 kfree_sensitive(connkeys);
12065                 return -EINVAL;
12066         }
12067
12068         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
12069                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12070                         kfree_sensitive(connkeys);
12071                         GENL_SET_ERR_MSG(info,
12072                                          "external auth requires connection ownership");
12073                         return -EINVAL;
12074                 }
12075                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
12076         }
12077
12078         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
12079                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
12080
12081         err = cfg80211_connect(rdev, dev, &connect, connkeys,
12082                                connect.prev_bssid);
12083         if (err)
12084                 kfree_sensitive(connkeys);
12085
12086         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
12087                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12088                 if (connect.bssid)
12089                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
12090                                connect.bssid, ETH_ALEN);
12091                 else
12092                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
12093         }
12094
12095         return err;
12096 }
12097
12098 static int nl80211_update_connect_params(struct sk_buff *skb,
12099                                          struct genl_info *info)
12100 {
12101         struct cfg80211_connect_params connect = {};
12102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12103         struct net_device *dev = info->user_ptr[1];
12104         struct wireless_dev *wdev = dev->ieee80211_ptr;
12105         bool fils_sk_offload;
12106         u32 auth_type;
12107         u32 changed = 0;
12108
12109         if (!rdev->ops->update_connect_params)
12110                 return -EOPNOTSUPP;
12111
12112         if (info->attrs[NL80211_ATTR_IE]) {
12113                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12114                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12115                 changed |= UPDATE_ASSOC_IES;
12116         }
12117
12118         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
12119                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
12120
12121         /*
12122          * when driver supports fils-sk offload all attributes must be
12123          * provided. So the else covers "fils-sk-not-all" and
12124          * "no-fils-sk-any".
12125          */
12126         if (fils_sk_offload &&
12127             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
12128             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
12129             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
12130             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12131                 connect.fils_erp_username =
12132                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12133                 connect.fils_erp_username_len =
12134                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
12135                 connect.fils_erp_realm =
12136                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12137                 connect.fils_erp_realm_len =
12138                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
12139                 connect.fils_erp_next_seq_num =
12140                         nla_get_u16(
12141                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
12142                 connect.fils_erp_rrk =
12143                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12144                 connect.fils_erp_rrk_len =
12145                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
12146                 changed |= UPDATE_FILS_ERP_INFO;
12147         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
12148                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
12149                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
12150                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
12151                 return -EINVAL;
12152         }
12153
12154         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
12155                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
12156                 if (!nl80211_valid_auth_type(rdev, auth_type,
12157                                              NL80211_CMD_CONNECT))
12158                         return -EINVAL;
12159
12160                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
12161                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
12162                         return -EINVAL;
12163
12164                 connect.auth_type = auth_type;
12165                 changed |= UPDATE_AUTH_TYPE;
12166         }
12167
12168         if (!wdev->connected)
12169                 return -ENOLINK;
12170
12171         return rdev_update_connect_params(rdev, dev, &connect, changed);
12172 }
12173
12174 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
12175 {
12176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12177         struct net_device *dev = info->user_ptr[1];
12178         u16 reason;
12179
12180         if (dev->ieee80211_ptr->conn_owner_nlportid &&
12181             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
12182                 return -EPERM;
12183
12184         if (!info->attrs[NL80211_ATTR_REASON_CODE])
12185                 reason = WLAN_REASON_DEAUTH_LEAVING;
12186         else
12187                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
12188
12189         if (reason == 0)
12190                 return -EINVAL;
12191
12192         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12193             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12194                 return -EOPNOTSUPP;
12195
12196         return cfg80211_disconnect(rdev, dev, reason, true);
12197 }
12198
12199 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
12200 {
12201         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12202         struct net *net;
12203         int err;
12204
12205         if (info->attrs[NL80211_ATTR_PID]) {
12206                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
12207
12208                 net = get_net_ns_by_pid(pid);
12209         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
12210                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
12211
12212                 net = get_net_ns_by_fd(fd);
12213         } else {
12214                 return -EINVAL;
12215         }
12216
12217         if (IS_ERR(net))
12218                 return PTR_ERR(net);
12219
12220         err = 0;
12221
12222         /* check if anything to do */
12223         if (!net_eq(wiphy_net(&rdev->wiphy), net))
12224                 err = cfg80211_switch_netns(rdev, net);
12225
12226         put_net(net);
12227         return err;
12228 }
12229
12230 static int nl80211_set_pmksa(struct sk_buff *skb, struct genl_info *info)
12231 {
12232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12233         struct net_device *dev = info->user_ptr[1];
12234         struct cfg80211_pmksa pmksa;
12235         bool ap_pmksa_caching_support = false;
12236
12237         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12238
12239         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12240                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12241
12242         if (!info->attrs[NL80211_ATTR_PMKID])
12243                 return -EINVAL;
12244
12245         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12246
12247         if (info->attrs[NL80211_ATTR_MAC]) {
12248                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12249         } else if (info->attrs[NL80211_ATTR_SSID] &&
12250                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12251                    info->attrs[NL80211_ATTR_PMK]) {
12252                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12253                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12254                 pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12255         } else {
12256                 return -EINVAL;
12257         }
12258
12259         if (info->attrs[NL80211_ATTR_PMK]) {
12260                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
12261                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
12262         }
12263
12264         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
12265                 pmksa.pmk_lifetime =
12266                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
12267
12268         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
12269                 pmksa.pmk_reauth_threshold =
12270                         nla_get_u8(info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
12271
12272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12273             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12274             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12275                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12276                ap_pmksa_caching_support))
12277                 return -EOPNOTSUPP;
12278
12279         if (!rdev->ops->set_pmksa)
12280                 return -EOPNOTSUPP;
12281
12282         return rdev_set_pmksa(rdev, dev, &pmksa);
12283 }
12284
12285 static int nl80211_del_pmksa(struct sk_buff *skb, struct genl_info *info)
12286 {
12287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12288         struct net_device *dev = info->user_ptr[1];
12289         struct cfg80211_pmksa pmksa;
12290         bool sae_offload_support = false;
12291         bool owe_offload_support = false;
12292         bool ap_pmksa_caching_support = false;
12293
12294         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
12295
12296         sae_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12297                 NL80211_EXT_FEATURE_SAE_OFFLOAD);
12298         owe_offload_support = wiphy_ext_feature_isset(&rdev->wiphy,
12299                 NL80211_EXT_FEATURE_OWE_OFFLOAD);
12300         ap_pmksa_caching_support = wiphy_ext_feature_isset(&rdev->wiphy,
12301                 NL80211_EXT_FEATURE_AP_PMKSA_CACHING);
12302
12303         if (info->attrs[NL80211_ATTR_PMKID])
12304                 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
12305
12306         if (info->attrs[NL80211_ATTR_MAC]) {
12307                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
12308         } else if (info->attrs[NL80211_ATTR_SSID]) {
12309                 /* SSID based pmksa flush suppported only for FILS,
12310                  * OWE/SAE OFFLOAD cases
12311                  */
12312                 if (info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
12313                     info->attrs[NL80211_ATTR_PMK]) {
12314                         pmksa.cache_id = nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
12315                 } else if (!sae_offload_support && !owe_offload_support) {
12316                         return -EINVAL;
12317                 }
12318                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
12319                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
12320         } else {
12321                 return -EINVAL;
12322         }
12323
12324         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12325             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
12326             !((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
12327                dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) &&
12328                ap_pmksa_caching_support))
12329                 return -EOPNOTSUPP;
12330
12331         if (!rdev->ops->del_pmksa)
12332                 return -EOPNOTSUPP;
12333
12334         return rdev_del_pmksa(rdev, dev, &pmksa);
12335 }
12336
12337 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12338 {
12339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12340         struct net_device *dev = info->user_ptr[1];
12341
12342         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12343             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12344                 return -EOPNOTSUPP;
12345
12346         if (!rdev->ops->flush_pmksa)
12347                 return -EOPNOTSUPP;
12348
12349         return rdev_flush_pmksa(rdev, dev);
12350 }
12351
12352 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12353 {
12354         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12355         struct net_device *dev = info->user_ptr[1];
12356         u8 action_code, dialog_token;
12357         u32 peer_capability = 0;
12358         u16 status_code;
12359         u8 *peer;
12360         int link_id;
12361         bool initiator;
12362
12363         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12364             !rdev->ops->tdls_mgmt)
12365                 return -EOPNOTSUPP;
12366
12367         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12368             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12369             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12370             !info->attrs[NL80211_ATTR_IE] ||
12371             !info->attrs[NL80211_ATTR_MAC])
12372                 return -EINVAL;
12373
12374         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12375         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12376         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12377         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12378         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12379         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12380                 peer_capability =
12381                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12382         link_id = nl80211_link_id_or_invalid(info->attrs);
12383
12384         return rdev_tdls_mgmt(rdev, dev, peer, link_id, action_code,
12385                               dialog_token, status_code, peer_capability,
12386                               initiator,
12387                               nla_data(info->attrs[NL80211_ATTR_IE]),
12388                               nla_len(info->attrs[NL80211_ATTR_IE]));
12389 }
12390
12391 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12392 {
12393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12394         struct net_device *dev = info->user_ptr[1];
12395         enum nl80211_tdls_operation operation;
12396         u8 *peer;
12397
12398         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12399             !rdev->ops->tdls_oper)
12400                 return -EOPNOTSUPP;
12401
12402         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12403             !info->attrs[NL80211_ATTR_MAC])
12404                 return -EINVAL;
12405
12406         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12407         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12408
12409         return rdev_tdls_oper(rdev, dev, peer, operation);
12410 }
12411
12412 static int nl80211_remain_on_channel(struct sk_buff *skb,
12413                                      struct genl_info *info)
12414 {
12415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12416         unsigned int link_id = nl80211_link_id(info->attrs);
12417         struct wireless_dev *wdev = info->user_ptr[1];
12418         struct cfg80211_chan_def chandef;
12419         struct sk_buff *msg;
12420         void *hdr;
12421         u64 cookie;
12422         u32 duration;
12423         int err;
12424
12425         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12426             !info->attrs[NL80211_ATTR_DURATION])
12427                 return -EINVAL;
12428
12429         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12430
12431         if (!rdev->ops->remain_on_channel ||
12432             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12433                 return -EOPNOTSUPP;
12434
12435         /*
12436          * We should be on that channel for at least a minimum amount of
12437          * time (10ms) but no longer than the driver supports.
12438          */
12439         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12440             duration > rdev->wiphy.max_remain_on_channel_duration)
12441                 return -EINVAL;
12442
12443         err = nl80211_parse_chandef(rdev, info, &chandef);
12444         if (err)
12445                 return err;
12446
12447         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12448                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12449
12450                 oper_chandef = wdev_chandef(wdev, link_id);
12451
12452                 if (WARN_ON(!oper_chandef)) {
12453                         /* cannot happen since we must beacon to get here */
12454                         WARN_ON(1);
12455                         return -EBUSY;
12456                 }
12457
12458                 /* note: returns first one if identical chandefs */
12459                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12460                                                              oper_chandef);
12461
12462                 if (compat_chandef != &chandef)
12463                         return -EBUSY;
12464         }
12465
12466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12467         if (!msg)
12468                 return -ENOMEM;
12469
12470         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12471                              NL80211_CMD_REMAIN_ON_CHANNEL);
12472         if (!hdr) {
12473                 err = -ENOBUFS;
12474                 goto free_msg;
12475         }
12476
12477         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12478                                      duration, &cookie);
12479
12480         if (err)
12481                 goto free_msg;
12482
12483         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12484                               NL80211_ATTR_PAD))
12485                 goto nla_put_failure;
12486
12487         genlmsg_end(msg, hdr);
12488
12489         return genlmsg_reply(msg, info);
12490
12491  nla_put_failure:
12492         err = -ENOBUFS;
12493  free_msg:
12494         nlmsg_free(msg);
12495         return err;
12496 }
12497
12498 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12499                                             struct genl_info *info)
12500 {
12501         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12502         struct wireless_dev *wdev = info->user_ptr[1];
12503         u64 cookie;
12504
12505         if (!info->attrs[NL80211_ATTR_COOKIE])
12506                 return -EINVAL;
12507
12508         if (!rdev->ops->cancel_remain_on_channel)
12509                 return -EOPNOTSUPP;
12510
12511         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12512
12513         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12514 }
12515
12516 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12517                                        struct genl_info *info)
12518 {
12519         struct cfg80211_bitrate_mask mask;
12520         unsigned int link_id = nl80211_link_id(info->attrs);
12521         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12522         struct net_device *dev = info->user_ptr[1];
12523         int err;
12524
12525         if (!rdev->ops->set_bitrate_mask)
12526                 return -EOPNOTSUPP;
12527
12528         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12529                                             NL80211_ATTR_TX_RATES, &mask,
12530                                             dev, true, link_id);
12531         if (err)
12532                 return err;
12533
12534         return rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12535 }
12536
12537 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12538 {
12539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12540         struct wireless_dev *wdev = info->user_ptr[1];
12541         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12542
12543         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12544                 return -EINVAL;
12545
12546         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12547                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12548
12549         switch (wdev->iftype) {
12550         case NL80211_IFTYPE_STATION:
12551         case NL80211_IFTYPE_ADHOC:
12552         case NL80211_IFTYPE_P2P_CLIENT:
12553         case NL80211_IFTYPE_AP:
12554         case NL80211_IFTYPE_AP_VLAN:
12555         case NL80211_IFTYPE_MESH_POINT:
12556         case NL80211_IFTYPE_P2P_GO:
12557         case NL80211_IFTYPE_P2P_DEVICE:
12558                 break;
12559         case NL80211_IFTYPE_NAN:
12560                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12561                                              NL80211_EXT_FEATURE_SECURE_NAN))
12562                         return -EOPNOTSUPP;
12563                 break;
12564         default:
12565                 return -EOPNOTSUPP;
12566         }
12567
12568         /* not much point in registering if we can't reply */
12569         if (!rdev->ops->mgmt_tx)
12570                 return -EOPNOTSUPP;
12571
12572         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12573             !wiphy_ext_feature_isset(&rdev->wiphy,
12574                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12575                 GENL_SET_ERR_MSG(info,
12576                                  "multicast RX registrations are not supported");
12577                 return -EOPNOTSUPP;
12578         }
12579
12580         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12581                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12582                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12583                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12584                                            info->extack);
12585 }
12586
12587 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12588 {
12589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12590         struct wireless_dev *wdev = info->user_ptr[1];
12591         struct cfg80211_chan_def chandef;
12592         int err;
12593         void *hdr = NULL;
12594         u64 cookie;
12595         struct sk_buff *msg = NULL;
12596         struct cfg80211_mgmt_tx_params params = {
12597                 .dont_wait_for_ack =
12598                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12599         };
12600
12601         if (!info->attrs[NL80211_ATTR_FRAME])
12602                 return -EINVAL;
12603
12604         if (!rdev->ops->mgmt_tx)
12605                 return -EOPNOTSUPP;
12606
12607         switch (wdev->iftype) {
12608         case NL80211_IFTYPE_P2P_DEVICE:
12609                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12610                         return -EINVAL;
12611                 break;
12612         case NL80211_IFTYPE_STATION:
12613         case NL80211_IFTYPE_ADHOC:
12614         case NL80211_IFTYPE_P2P_CLIENT:
12615         case NL80211_IFTYPE_AP:
12616         case NL80211_IFTYPE_AP_VLAN:
12617         case NL80211_IFTYPE_MESH_POINT:
12618         case NL80211_IFTYPE_P2P_GO:
12619                 break;
12620         case NL80211_IFTYPE_NAN:
12621                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12622                                              NL80211_EXT_FEATURE_SECURE_NAN))
12623                         return -EOPNOTSUPP;
12624                 break;
12625         default:
12626                 return -EOPNOTSUPP;
12627         }
12628
12629         if (info->attrs[NL80211_ATTR_DURATION]) {
12630                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12631                         return -EINVAL;
12632                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12633
12634                 /*
12635                  * We should wait on the channel for at least a minimum amount
12636                  * of time (10ms) but no longer than the driver supports.
12637                  */
12638                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12639                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12640                         return -EINVAL;
12641         }
12642
12643         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12644
12645         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12646                 return -EINVAL;
12647
12648         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12649
12650         /* get the channel if any has been specified, otherwise pass NULL to
12651          * the driver. The latter will use the current one
12652          */
12653         chandef.chan = NULL;
12654         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12655                 err = nl80211_parse_chandef(rdev, info, &chandef);
12656                 if (err)
12657                         return err;
12658         }
12659
12660         if (!chandef.chan && params.offchan)
12661                 return -EINVAL;
12662
12663         if (params.offchan &&
12664             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan))
12665                 return -EBUSY;
12666
12667         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12668         /*
12669          * This now races due to the unlock, but we cannot check
12670          * the valid links for the _station_ anyway, so that's up
12671          * to the driver.
12672          */
12673         if (params.link_id >= 0 &&
12674             !(wdev->valid_links & BIT(params.link_id)))
12675                 return -EINVAL;
12676
12677         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12678         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12679
12680         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12681                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12682                 int i;
12683
12684                 if (len % sizeof(u16))
12685                         return -EINVAL;
12686
12687                 params.n_csa_offsets = len / sizeof(u16);
12688                 params.csa_offsets =
12689                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12690
12691                 /* check that all the offsets fit the frame */
12692                 for (i = 0; i < params.n_csa_offsets; i++) {
12693                         if (params.csa_offsets[i] >= params.len)
12694                                 return -EINVAL;
12695                 }
12696         }
12697
12698         if (!params.dont_wait_for_ack) {
12699                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12700                 if (!msg)
12701                         return -ENOMEM;
12702
12703                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12704                                      NL80211_CMD_FRAME);
12705                 if (!hdr) {
12706                         err = -ENOBUFS;
12707                         goto free_msg;
12708                 }
12709         }
12710
12711         params.chan = chandef.chan;
12712         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12713         if (err)
12714                 goto free_msg;
12715
12716         if (msg) {
12717                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12718                                       NL80211_ATTR_PAD))
12719                         goto nla_put_failure;
12720
12721                 genlmsg_end(msg, hdr);
12722                 return genlmsg_reply(msg, info);
12723         }
12724
12725         return 0;
12726
12727  nla_put_failure:
12728         err = -ENOBUFS;
12729  free_msg:
12730         nlmsg_free(msg);
12731         return err;
12732 }
12733
12734 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12735 {
12736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12737         struct wireless_dev *wdev = info->user_ptr[1];
12738         u64 cookie;
12739
12740         if (!info->attrs[NL80211_ATTR_COOKIE])
12741                 return -EINVAL;
12742
12743         if (!rdev->ops->mgmt_tx_cancel_wait)
12744                 return -EOPNOTSUPP;
12745
12746         switch (wdev->iftype) {
12747         case NL80211_IFTYPE_STATION:
12748         case NL80211_IFTYPE_ADHOC:
12749         case NL80211_IFTYPE_P2P_CLIENT:
12750         case NL80211_IFTYPE_AP:
12751         case NL80211_IFTYPE_AP_VLAN:
12752         case NL80211_IFTYPE_P2P_GO:
12753         case NL80211_IFTYPE_P2P_DEVICE:
12754                 break;
12755         case NL80211_IFTYPE_NAN:
12756                 if (!wiphy_ext_feature_isset(wdev->wiphy,
12757                                              NL80211_EXT_FEATURE_SECURE_NAN))
12758                         return -EOPNOTSUPP;
12759                 break;
12760         default:
12761                 return -EOPNOTSUPP;
12762         }
12763
12764         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12765
12766         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12767 }
12768
12769 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12770 {
12771         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12772         struct wireless_dev *wdev;
12773         struct net_device *dev = info->user_ptr[1];
12774         u8 ps_state;
12775         bool state;
12776         int err;
12777
12778         if (!info->attrs[NL80211_ATTR_PS_STATE])
12779                 return -EINVAL;
12780
12781         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12782
12783         wdev = dev->ieee80211_ptr;
12784
12785         if (!rdev->ops->set_power_mgmt)
12786                 return -EOPNOTSUPP;
12787
12788         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12789
12790         if (state == wdev->ps)
12791                 return 0;
12792
12793         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12794         if (!err)
12795                 wdev->ps = state;
12796         return err;
12797 }
12798
12799 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12800 {
12801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12802         enum nl80211_ps_state ps_state;
12803         struct wireless_dev *wdev;
12804         struct net_device *dev = info->user_ptr[1];
12805         struct sk_buff *msg;
12806         void *hdr;
12807         int err;
12808
12809         wdev = dev->ieee80211_ptr;
12810
12811         if (!rdev->ops->set_power_mgmt)
12812                 return -EOPNOTSUPP;
12813
12814         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12815         if (!msg)
12816                 return -ENOMEM;
12817
12818         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12819                              NL80211_CMD_GET_POWER_SAVE);
12820         if (!hdr) {
12821                 err = -ENOBUFS;
12822                 goto free_msg;
12823         }
12824
12825         if (wdev->ps)
12826                 ps_state = NL80211_PS_ENABLED;
12827         else
12828                 ps_state = NL80211_PS_DISABLED;
12829
12830         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12831                 goto nla_put_failure;
12832
12833         genlmsg_end(msg, hdr);
12834         return genlmsg_reply(msg, info);
12835
12836  nla_put_failure:
12837         err = -ENOBUFS;
12838  free_msg:
12839         nlmsg_free(msg);
12840         return err;
12841 }
12842
12843 static const struct nla_policy
12844 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12845         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12846         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12847         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12848         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12849         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12850         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12851         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12852 };
12853
12854 static int nl80211_set_cqm_txe(struct genl_info *info,
12855                                u32 rate, u32 pkts, u32 intvl)
12856 {
12857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12858         struct net_device *dev = info->user_ptr[1];
12859         struct wireless_dev *wdev = dev->ieee80211_ptr;
12860
12861         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12862                 return -EINVAL;
12863
12864         if (!rdev->ops->set_cqm_txe_config)
12865                 return -EOPNOTSUPP;
12866
12867         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12868             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12869                 return -EOPNOTSUPP;
12870
12871         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12872 }
12873
12874 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12875                                     struct net_device *dev,
12876                                     struct cfg80211_cqm_config *cqm_config)
12877 {
12878         struct wireless_dev *wdev = dev->ieee80211_ptr;
12879         s32 last, low, high;
12880         u32 hyst;
12881         int i, n, low_index;
12882         int err;
12883
12884         /*
12885          * Obtain current RSSI value if possible, if not and no RSSI threshold
12886          * event has been received yet, we should receive an event after a
12887          * connection is established and enough beacons received to calculate
12888          * the average.
12889          */
12890         if (!cqm_config->last_rssi_event_value &&
12891             wdev->links[0].client.current_bss &&
12892             rdev->ops->get_station) {
12893                 struct station_info sinfo = {};
12894                 u8 *mac_addr;
12895
12896                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12897
12898                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12899                 if (err)
12900                         return err;
12901
12902                 cfg80211_sinfo_release_content(&sinfo);
12903                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12904                         cqm_config->last_rssi_event_value =
12905                                 (s8) sinfo.rx_beacon_signal_avg;
12906         }
12907
12908         last = cqm_config->last_rssi_event_value;
12909         hyst = cqm_config->rssi_hyst;
12910         n = cqm_config->n_rssi_thresholds;
12911
12912         for (i = 0; i < n; i++) {
12913                 i = array_index_nospec(i, n);
12914                 if (last < cqm_config->rssi_thresholds[i])
12915                         break;
12916         }
12917
12918         low_index = i - 1;
12919         if (low_index >= 0) {
12920                 low_index = array_index_nospec(low_index, n);
12921                 low = cqm_config->rssi_thresholds[low_index] - hyst;
12922         } else {
12923                 low = S32_MIN;
12924         }
12925         if (i < n) {
12926                 i = array_index_nospec(i, n);
12927                 high = cqm_config->rssi_thresholds[i] + hyst - 1;
12928         } else {
12929                 high = S32_MAX;
12930         }
12931
12932         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12933 }
12934
12935 static int nl80211_set_cqm_rssi(struct genl_info *info,
12936                                 const s32 *thresholds, int n_thresholds,
12937                                 u32 hysteresis)
12938 {
12939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12940         struct cfg80211_cqm_config *cqm_config = NULL, *old;
12941         struct net_device *dev = info->user_ptr[1];
12942         struct wireless_dev *wdev = dev->ieee80211_ptr;
12943         s32 prev = S32_MIN;
12944         int i, err;
12945
12946         /* Check all values negative and sorted */
12947         for (i = 0; i < n_thresholds; i++) {
12948                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12949                         return -EINVAL;
12950
12951                 prev = thresholds[i];
12952         }
12953
12954         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12955             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12956                 return -EOPNOTSUPP;
12957
12958         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12959                 n_thresholds = 0;
12960
12961         old = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
12962
12963         /* if already disabled just succeed */
12964         if (!n_thresholds && !old)
12965                 return 0;
12966
12967         if (n_thresholds > 1) {
12968                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
12969                                              NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
12970                     !rdev->ops->set_cqm_rssi_range_config)
12971                         return -EOPNOTSUPP;
12972         } else {
12973                 if (!rdev->ops->set_cqm_rssi_config)
12974                         return -EOPNOTSUPP;
12975         }
12976
12977         if (n_thresholds) {
12978                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12979                                                  n_thresholds),
12980                                      GFP_KERNEL);
12981                 if (!cqm_config)
12982                         return -ENOMEM;
12983
12984                 cqm_config->rssi_hyst = hysteresis;
12985                 cqm_config->n_rssi_thresholds = n_thresholds;
12986                 memcpy(cqm_config->rssi_thresholds, thresholds,
12987                        flex_array_size(cqm_config, rssi_thresholds,
12988                                        n_thresholds));
12989                 cqm_config->use_range_api = n_thresholds > 1 ||
12990                                             !rdev->ops->set_cqm_rssi_config;
12991
12992                 rcu_assign_pointer(wdev->cqm_config, cqm_config);
12993
12994                 if (cqm_config->use_range_api)
12995                         err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
12996                 else
12997                         err = rdev_set_cqm_rssi_config(rdev, dev,
12998                                                        thresholds[0],
12999                                                        hysteresis);
13000         } else {
13001                 RCU_INIT_POINTER(wdev->cqm_config, NULL);
13002                 /* if enabled as range also disable via range */
13003                 if (old->use_range_api)
13004                         err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
13005                 else
13006                         err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
13007         }
13008
13009         if (err) {
13010                 rcu_assign_pointer(wdev->cqm_config, old);
13011                 kfree_rcu(cqm_config, rcu_head);
13012         } else {
13013                 kfree_rcu(old, rcu_head);
13014         }
13015
13016         return err;
13017 }
13018
13019 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
13020 {
13021         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
13022         struct nlattr *cqm;
13023         int err;
13024
13025         cqm = info->attrs[NL80211_ATTR_CQM];
13026         if (!cqm)
13027                 return -EINVAL;
13028
13029         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
13030                                           nl80211_attr_cqm_policy,
13031                                           info->extack);
13032         if (err)
13033                 return err;
13034
13035         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
13036             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
13037                 const s32 *thresholds =
13038                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13039                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
13040                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
13041
13042                 if (len % 4)
13043                         return -EINVAL;
13044
13045                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
13046                                             hysteresis);
13047         }
13048
13049         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
13050             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
13051             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
13052                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
13053                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
13054                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
13055
13056                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
13057         }
13058
13059         return -EINVAL;
13060 }
13061
13062 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
13063 {
13064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13065         struct net_device *dev = info->user_ptr[1];
13066         struct ocb_setup setup = {};
13067         int err;
13068
13069         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13070         if (err)
13071                 return err;
13072
13073         return cfg80211_join_ocb(rdev, dev, &setup);
13074 }
13075
13076 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
13077 {
13078         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13079         struct net_device *dev = info->user_ptr[1];
13080
13081         return cfg80211_leave_ocb(rdev, dev);
13082 }
13083
13084 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
13085 {
13086         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13087         struct net_device *dev = info->user_ptr[1];
13088         struct mesh_config cfg;
13089         struct mesh_setup setup;
13090         int err;
13091
13092         /* start with default */
13093         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
13094         memcpy(&setup, &default_mesh_setup, sizeof(setup));
13095
13096         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
13097                 /* and parse parameters if given */
13098                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
13099                 if (err)
13100                         return err;
13101         }
13102
13103         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
13104             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
13105                 return -EINVAL;
13106
13107         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
13108         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
13109
13110         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
13111             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
13112                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
13113                         return -EINVAL;
13114
13115         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
13116                 setup.beacon_interval =
13117                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
13118
13119                 err = cfg80211_validate_beacon_int(rdev,
13120                                                    NL80211_IFTYPE_MESH_POINT,
13121                                                    setup.beacon_interval);
13122                 if (err)
13123                         return err;
13124         }
13125
13126         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
13127                 setup.dtim_period =
13128                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
13129                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
13130                         return -EINVAL;
13131         }
13132
13133         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
13134                 /* parse additional setup parameters if given */
13135                 err = nl80211_parse_mesh_setup(info, &setup);
13136                 if (err)
13137                         return err;
13138         }
13139
13140         if (setup.user_mpm)
13141                 cfg.auto_open_plinks = false;
13142
13143         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
13144                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
13145                 if (err)
13146                         return err;
13147         } else {
13148                 /* __cfg80211_join_mesh() will sort it out */
13149                 setup.chandef.chan = NULL;
13150         }
13151
13152         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
13153                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13154                 int n_rates =
13155                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
13156                 struct ieee80211_supported_band *sband;
13157
13158                 if (!setup.chandef.chan)
13159                         return -EINVAL;
13160
13161                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
13162
13163                 err = ieee80211_get_ratemask(sband, rates, n_rates,
13164                                              &setup.basic_rates);
13165                 if (err)
13166                         return err;
13167         }
13168
13169         if (info->attrs[NL80211_ATTR_TX_RATES]) {
13170                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
13171                                                     NL80211_ATTR_TX_RATES,
13172                                                     &setup.beacon_rate,
13173                                                     dev, false, 0);
13174                 if (err)
13175                         return err;
13176
13177                 if (!setup.chandef.chan)
13178                         return -EINVAL;
13179
13180                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
13181                                               &setup.beacon_rate);
13182                 if (err)
13183                         return err;
13184         }
13185
13186         setup.userspace_handles_dfs =
13187                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
13188
13189         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
13190                 int r = validate_pae_over_nl80211(rdev, info);
13191
13192                 if (r < 0)
13193                         return r;
13194
13195                 setup.control_port_over_nl80211 = true;
13196         }
13197
13198         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
13199         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
13200                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
13201
13202         return err;
13203 }
13204
13205 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
13206 {
13207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13208         struct net_device *dev = info->user_ptr[1];
13209
13210         return cfg80211_leave_mesh(rdev, dev);
13211 }
13212
13213 #ifdef CONFIG_PM
13214 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
13215                                         struct cfg80211_registered_device *rdev)
13216 {
13217         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
13218         struct nlattr *nl_pats, *nl_pat;
13219         int i, pat_len;
13220
13221         if (!wowlan->n_patterns)
13222                 return 0;
13223
13224         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
13225         if (!nl_pats)
13226                 return -ENOBUFS;
13227
13228         for (i = 0; i < wowlan->n_patterns; i++) {
13229                 nl_pat = nla_nest_start_noflag(msg, i + 1);
13230                 if (!nl_pat)
13231                         return -ENOBUFS;
13232                 pat_len = wowlan->patterns[i].pattern_len;
13233                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
13234                             wowlan->patterns[i].mask) ||
13235                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13236                             wowlan->patterns[i].pattern) ||
13237                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13238                                 wowlan->patterns[i].pkt_offset))
13239                         return -ENOBUFS;
13240                 nla_nest_end(msg, nl_pat);
13241         }
13242         nla_nest_end(msg, nl_pats);
13243
13244         return 0;
13245 }
13246
13247 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
13248                                    struct cfg80211_wowlan_tcp *tcp)
13249 {
13250         struct nlattr *nl_tcp;
13251
13252         if (!tcp)
13253                 return 0;
13254
13255         nl_tcp = nla_nest_start_noflag(msg,
13256                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
13257         if (!nl_tcp)
13258                 return -ENOBUFS;
13259
13260         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
13261             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
13262             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
13263             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
13264             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
13265             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
13266                     tcp->payload_len, tcp->payload) ||
13267             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
13268                         tcp->data_interval) ||
13269             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
13270                     tcp->wake_len, tcp->wake_data) ||
13271             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
13272                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
13273                 return -ENOBUFS;
13274
13275         if (tcp->payload_seq.len &&
13276             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
13277                     sizeof(tcp->payload_seq), &tcp->payload_seq))
13278                 return -ENOBUFS;
13279
13280         if (tcp->payload_tok.len &&
13281             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
13282                     sizeof(tcp->payload_tok) + tcp->tokens_size,
13283                     &tcp->payload_tok))
13284                 return -ENOBUFS;
13285
13286         nla_nest_end(msg, nl_tcp);
13287
13288         return 0;
13289 }
13290
13291 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
13292                                   struct cfg80211_sched_scan_request *req)
13293 {
13294         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
13295         int i;
13296
13297         if (!req)
13298                 return 0;
13299
13300         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
13301         if (!nd)
13302                 return -ENOBUFS;
13303
13304         if (req->n_scan_plans == 1 &&
13305             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
13306                         req->scan_plans[0].interval * 1000))
13307                 return -ENOBUFS;
13308
13309         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
13310                 return -ENOBUFS;
13311
13312         if (req->relative_rssi_set) {
13313                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
13314
13315                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
13316                                req->relative_rssi))
13317                         return -ENOBUFS;
13318
13319                 rssi_adjust.band = req->rssi_adjust.band;
13320                 rssi_adjust.delta = req->rssi_adjust.delta;
13321                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13322                             sizeof(rssi_adjust), &rssi_adjust))
13323                         return -ENOBUFS;
13324         }
13325
13326         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13327         if (!freqs)
13328                 return -ENOBUFS;
13329
13330         for (i = 0; i < req->n_channels; i++) {
13331                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13332                         return -ENOBUFS;
13333         }
13334
13335         nla_nest_end(msg, freqs);
13336
13337         if (req->n_match_sets) {
13338                 matches = nla_nest_start_noflag(msg,
13339                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13340                 if (!matches)
13341                         return -ENOBUFS;
13342
13343                 for (i = 0; i < req->n_match_sets; i++) {
13344                         match = nla_nest_start_noflag(msg, i);
13345                         if (!match)
13346                                 return -ENOBUFS;
13347
13348                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13349                                     req->match_sets[i].ssid.ssid_len,
13350                                     req->match_sets[i].ssid.ssid))
13351                                 return -ENOBUFS;
13352                         nla_nest_end(msg, match);
13353                 }
13354                 nla_nest_end(msg, matches);
13355         }
13356
13357         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13358         if (!scan_plans)
13359                 return -ENOBUFS;
13360
13361         for (i = 0; i < req->n_scan_plans; i++) {
13362                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13363                 if (!scan_plan)
13364                         return -ENOBUFS;
13365
13366                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13367                                 req->scan_plans[i].interval) ||
13368                     (req->scan_plans[i].iterations &&
13369                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13370                                  req->scan_plans[i].iterations)))
13371                         return -ENOBUFS;
13372                 nla_nest_end(msg, scan_plan);
13373         }
13374         nla_nest_end(msg, scan_plans);
13375
13376         nla_nest_end(msg, nd);
13377
13378         return 0;
13379 }
13380
13381 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13382 {
13383         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13384         struct sk_buff *msg;
13385         void *hdr;
13386         u32 size = NLMSG_DEFAULT_SIZE;
13387
13388         if (!rdev->wiphy.wowlan)
13389                 return -EOPNOTSUPP;
13390
13391         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13392                 /* adjust size to have room for all the data */
13393                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13394                         rdev->wiphy.wowlan_config->tcp->payload_len +
13395                         rdev->wiphy.wowlan_config->tcp->wake_len +
13396                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13397         }
13398
13399         msg = nlmsg_new(size, GFP_KERNEL);
13400         if (!msg)
13401                 return -ENOMEM;
13402
13403         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13404                              NL80211_CMD_GET_WOWLAN);
13405         if (!hdr)
13406                 goto nla_put_failure;
13407
13408         if (rdev->wiphy.wowlan_config) {
13409                 struct nlattr *nl_wowlan;
13410
13411                 nl_wowlan = nla_nest_start_noflag(msg,
13412                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13413                 if (!nl_wowlan)
13414                         goto nla_put_failure;
13415
13416                 if ((rdev->wiphy.wowlan_config->any &&
13417                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13418                     (rdev->wiphy.wowlan_config->disconnect &&
13419                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13420                     (rdev->wiphy.wowlan_config->magic_pkt &&
13421                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13422                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13423                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13424                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13425                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13426                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13427                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13428                     (rdev->wiphy.wowlan_config->rfkill_release &&
13429                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13430                         goto nla_put_failure;
13431
13432                 if (nl80211_send_wowlan_patterns(msg, rdev))
13433                         goto nla_put_failure;
13434
13435                 if (nl80211_send_wowlan_tcp(msg,
13436                                             rdev->wiphy.wowlan_config->tcp))
13437                         goto nla_put_failure;
13438
13439                 if (nl80211_send_wowlan_nd(
13440                             msg,
13441                             rdev->wiphy.wowlan_config->nd_config))
13442                         goto nla_put_failure;
13443
13444                 nla_nest_end(msg, nl_wowlan);
13445         }
13446
13447         genlmsg_end(msg, hdr);
13448         return genlmsg_reply(msg, info);
13449
13450 nla_put_failure:
13451         nlmsg_free(msg);
13452         return -ENOBUFS;
13453 }
13454
13455 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13456                                     struct nlattr *attr,
13457                                     struct cfg80211_wowlan *trig)
13458 {
13459         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13460         struct cfg80211_wowlan_tcp *cfg;
13461         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13462         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13463         u32 size;
13464         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13465         int err, port;
13466
13467         if (!rdev->wiphy.wowlan->tcp)
13468                 return -EINVAL;
13469
13470         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13471                                           nl80211_wowlan_tcp_policy, NULL);
13472         if (err)
13473                 return err;
13474
13475         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13476             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13477             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13478             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13479             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13480             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13481             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13482             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13483                 return -EINVAL;
13484
13485         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13486         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13487                 return -EINVAL;
13488
13489         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13490                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13491             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13492                 return -EINVAL;
13493
13494         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13495         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13496                 return -EINVAL;
13497
13498         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13499         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13500                 return -EINVAL;
13501
13502         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13503                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13504
13505                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13506                 tokens_size = tokln - sizeof(*tok);
13507
13508                 if (!tok->len || tokens_size % tok->len)
13509                         return -EINVAL;
13510                 if (!rdev->wiphy.wowlan->tcp->tok)
13511                         return -EINVAL;
13512                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13513                         return -EINVAL;
13514                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13515                         return -EINVAL;
13516                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13517                         return -EINVAL;
13518                 if (tok->offset + tok->len > data_size)
13519                         return -EINVAL;
13520         }
13521
13522         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13523                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13524                 if (!rdev->wiphy.wowlan->tcp->seq)
13525                         return -EINVAL;
13526                 if (seq->len == 0 || seq->len > 4)
13527                         return -EINVAL;
13528                 if (seq->len + seq->offset > data_size)
13529                         return -EINVAL;
13530         }
13531
13532         size = sizeof(*cfg);
13533         size += data_size;
13534         size += wake_size + wake_mask_size;
13535         size += tokens_size;
13536
13537         cfg = kzalloc(size, GFP_KERNEL);
13538         if (!cfg)
13539                 return -ENOMEM;
13540         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13541         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13542         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13543                ETH_ALEN);
13544         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13545                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13546         else
13547                 port = 0;
13548 #ifdef CONFIG_INET
13549         /* allocate a socket and port for it and use it */
13550         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13551                             IPPROTO_TCP, &cfg->sock, 1);
13552         if (err) {
13553                 kfree(cfg);
13554                 return err;
13555         }
13556         if (inet_csk_get_port(cfg->sock->sk, port)) {
13557                 sock_release(cfg->sock);
13558                 kfree(cfg);
13559                 return -EADDRINUSE;
13560         }
13561         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13562 #else
13563         if (!port) {
13564                 kfree(cfg);
13565                 return -EINVAL;
13566         }
13567         cfg->src_port = port;
13568 #endif
13569
13570         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13571         cfg->payload_len = data_size;
13572         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13573         memcpy((void *)cfg->payload,
13574                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13575                data_size);
13576         if (seq)
13577                 cfg->payload_seq = *seq;
13578         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13579         cfg->wake_len = wake_size;
13580         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13581         memcpy((void *)cfg->wake_data,
13582                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13583                wake_size);
13584         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13585                          data_size + wake_size;
13586         memcpy((void *)cfg->wake_mask,
13587                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13588                wake_mask_size);
13589         if (tok) {
13590                 cfg->tokens_size = tokens_size;
13591                 cfg->payload_tok = *tok;
13592                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13593                        tokens_size);
13594         }
13595
13596         trig->tcp = cfg;
13597
13598         return 0;
13599 }
13600
13601 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13602                                    const struct wiphy_wowlan_support *wowlan,
13603                                    struct nlattr *attr,
13604                                    struct cfg80211_wowlan *trig)
13605 {
13606         struct nlattr **tb;
13607         int err;
13608
13609         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13610         if (!tb)
13611                 return -ENOMEM;
13612
13613         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13614                 err = -EOPNOTSUPP;
13615                 goto out;
13616         }
13617
13618         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13619                                           nl80211_policy, NULL);
13620         if (err)
13621                 goto out;
13622
13623         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13624                                                    wowlan->max_nd_match_sets);
13625         err = PTR_ERR_OR_ZERO(trig->nd_config);
13626         if (err)
13627                 trig->nd_config = NULL;
13628
13629 out:
13630         kfree(tb);
13631         return err;
13632 }
13633
13634 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13635 {
13636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13637         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13638         struct cfg80211_wowlan new_triggers = {};
13639         struct cfg80211_wowlan *ntrig;
13640         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13641         int err, i;
13642         bool prev_enabled = rdev->wiphy.wowlan_config;
13643         bool regular = false;
13644
13645         if (!wowlan)
13646                 return -EOPNOTSUPP;
13647
13648         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13649                 cfg80211_rdev_free_wowlan(rdev);
13650                 rdev->wiphy.wowlan_config = NULL;
13651                 goto set_wakeup;
13652         }
13653
13654         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13655                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13656                                           nl80211_wowlan_policy, info->extack);
13657         if (err)
13658                 return err;
13659
13660         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13661                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13662                         return -EINVAL;
13663                 new_triggers.any = true;
13664         }
13665
13666         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13667                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13668                         return -EINVAL;
13669                 new_triggers.disconnect = true;
13670                 regular = true;
13671         }
13672
13673         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13674                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13675                         return -EINVAL;
13676                 new_triggers.magic_pkt = true;
13677                 regular = true;
13678         }
13679
13680         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13681                 return -EINVAL;
13682
13683         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13684                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13685                         return -EINVAL;
13686                 new_triggers.gtk_rekey_failure = true;
13687                 regular = true;
13688         }
13689
13690         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13691                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13692                         return -EINVAL;
13693                 new_triggers.eap_identity_req = true;
13694                 regular = true;
13695         }
13696
13697         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13698                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13699                         return -EINVAL;
13700                 new_triggers.four_way_handshake = true;
13701                 regular = true;
13702         }
13703
13704         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13705                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13706                         return -EINVAL;
13707                 new_triggers.rfkill_release = true;
13708                 regular = true;
13709         }
13710
13711         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13712                 struct nlattr *pat;
13713                 int n_patterns = 0;
13714                 int rem, pat_len, mask_len, pkt_offset;
13715                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13716
13717                 regular = true;
13718
13719                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13720                                     rem)
13721                         n_patterns++;
13722                 if (n_patterns > wowlan->n_patterns)
13723                         return -EINVAL;
13724
13725                 new_triggers.patterns = kcalloc(n_patterns,
13726                                                 sizeof(new_triggers.patterns[0]),
13727                                                 GFP_KERNEL);
13728                 if (!new_triggers.patterns)
13729                         return -ENOMEM;
13730
13731                 new_triggers.n_patterns = n_patterns;
13732                 i = 0;
13733
13734                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13735                                     rem) {
13736                         u8 *mask_pat;
13737
13738                         err = nla_parse_nested_deprecated(pat_tb,
13739                                                           MAX_NL80211_PKTPAT,
13740                                                           pat,
13741                                                           nl80211_packet_pattern_policy,
13742                                                           info->extack);
13743                         if (err)
13744                                 goto error;
13745
13746                         err = -EINVAL;
13747                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13748                             !pat_tb[NL80211_PKTPAT_PATTERN])
13749                                 goto error;
13750                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13751                         mask_len = DIV_ROUND_UP(pat_len, 8);
13752                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13753                                 goto error;
13754                         if (pat_len > wowlan->pattern_max_len ||
13755                             pat_len < wowlan->pattern_min_len)
13756                                 goto error;
13757
13758                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13759                                 pkt_offset = 0;
13760                         else
13761                                 pkt_offset = nla_get_u32(
13762                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13763                         if (pkt_offset > wowlan->max_pkt_offset)
13764                                 goto error;
13765                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13766
13767                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13768                         if (!mask_pat) {
13769                                 err = -ENOMEM;
13770                                 goto error;
13771                         }
13772                         new_triggers.patterns[i].mask = mask_pat;
13773                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13774                                mask_len);
13775                         mask_pat += mask_len;
13776                         new_triggers.patterns[i].pattern = mask_pat;
13777                         new_triggers.patterns[i].pattern_len = pat_len;
13778                         memcpy(mask_pat,
13779                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13780                                pat_len);
13781                         i++;
13782                 }
13783         }
13784
13785         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13786                 regular = true;
13787                 err = nl80211_parse_wowlan_tcp(
13788                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13789                         &new_triggers);
13790                 if (err)
13791                         goto error;
13792         }
13793
13794         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13795                 regular = true;
13796                 err = nl80211_parse_wowlan_nd(
13797                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13798                         &new_triggers);
13799                 if (err)
13800                         goto error;
13801         }
13802
13803         /* The 'any' trigger means the device continues operating more or less
13804          * as in its normal operation mode and wakes up the host on most of the
13805          * normal interrupts (like packet RX, ...)
13806          * It therefore makes little sense to combine with the more constrained
13807          * wakeup trigger modes.
13808          */
13809         if (new_triggers.any && regular) {
13810                 err = -EINVAL;
13811                 goto error;
13812         }
13813
13814         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13815         if (!ntrig) {
13816                 err = -ENOMEM;
13817                 goto error;
13818         }
13819         cfg80211_rdev_free_wowlan(rdev);
13820         rdev->wiphy.wowlan_config = ntrig;
13821
13822  set_wakeup:
13823         if (rdev->ops->set_wakeup &&
13824             prev_enabled != !!rdev->wiphy.wowlan_config)
13825                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13826
13827         return 0;
13828  error:
13829         for (i = 0; i < new_triggers.n_patterns; i++)
13830                 kfree(new_triggers.patterns[i].mask);
13831         kfree(new_triggers.patterns);
13832         if (new_triggers.tcp && new_triggers.tcp->sock)
13833                 sock_release(new_triggers.tcp->sock);
13834         kfree(new_triggers.tcp);
13835         kfree(new_triggers.nd_config);
13836         return err;
13837 }
13838 #endif
13839
13840 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13841                                        struct cfg80211_registered_device *rdev)
13842 {
13843         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13844         int i, j, pat_len;
13845         struct cfg80211_coalesce_rules *rule;
13846
13847         if (!rdev->coalesce->n_rules)
13848                 return 0;
13849
13850         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13851         if (!nl_rules)
13852                 return -ENOBUFS;
13853
13854         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13855                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13856                 if (!nl_rule)
13857                         return -ENOBUFS;
13858
13859                 rule = &rdev->coalesce->rules[i];
13860                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13861                                 rule->delay))
13862                         return -ENOBUFS;
13863
13864                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13865                                 rule->condition))
13866                         return -ENOBUFS;
13867
13868                 nl_pats = nla_nest_start_noflag(msg,
13869                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13870                 if (!nl_pats)
13871                         return -ENOBUFS;
13872
13873                 for (j = 0; j < rule->n_patterns; j++) {
13874                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13875                         if (!nl_pat)
13876                                 return -ENOBUFS;
13877                         pat_len = rule->patterns[j].pattern_len;
13878                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13879                                     DIV_ROUND_UP(pat_len, 8),
13880                                     rule->patterns[j].mask) ||
13881                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13882                                     rule->patterns[j].pattern) ||
13883                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13884                                         rule->patterns[j].pkt_offset))
13885                                 return -ENOBUFS;
13886                         nla_nest_end(msg, nl_pat);
13887                 }
13888                 nla_nest_end(msg, nl_pats);
13889                 nla_nest_end(msg, nl_rule);
13890         }
13891         nla_nest_end(msg, nl_rules);
13892
13893         return 0;
13894 }
13895
13896 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13897 {
13898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13899         struct sk_buff *msg;
13900         void *hdr;
13901
13902         if (!rdev->wiphy.coalesce)
13903                 return -EOPNOTSUPP;
13904
13905         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13906         if (!msg)
13907                 return -ENOMEM;
13908
13909         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13910                              NL80211_CMD_GET_COALESCE);
13911         if (!hdr)
13912                 goto nla_put_failure;
13913
13914         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13915                 goto nla_put_failure;
13916
13917         genlmsg_end(msg, hdr);
13918         return genlmsg_reply(msg, info);
13919
13920 nla_put_failure:
13921         nlmsg_free(msg);
13922         return -ENOBUFS;
13923 }
13924
13925 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13926 {
13927         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13928         int i, j;
13929         struct cfg80211_coalesce_rules *rule;
13930
13931         if (!coalesce)
13932                 return;
13933
13934         for (i = 0; i < coalesce->n_rules; i++) {
13935                 rule = &coalesce->rules[i];
13936                 for (j = 0; j < rule->n_patterns; j++)
13937                         kfree(rule->patterns[j].mask);
13938                 kfree(rule->patterns);
13939         }
13940         kfree(coalesce->rules);
13941         kfree(coalesce);
13942         rdev->coalesce = NULL;
13943 }
13944
13945 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13946                                        struct nlattr *rule,
13947                                        struct cfg80211_coalesce_rules *new_rule)
13948 {
13949         int err, i;
13950         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13951         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13952         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13953         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13954
13955         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13956                                           rule, nl80211_coalesce_policy, NULL);
13957         if (err)
13958                 return err;
13959
13960         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13961                 new_rule->delay =
13962                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13963         if (new_rule->delay > coalesce->max_delay)
13964                 return -EINVAL;
13965
13966         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13967                 new_rule->condition =
13968                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13969
13970         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13971                 return -EINVAL;
13972
13973         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13974                             rem)
13975                 n_patterns++;
13976         if (n_patterns > coalesce->n_patterns)
13977                 return -EINVAL;
13978
13979         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13980                                      GFP_KERNEL);
13981         if (!new_rule->patterns)
13982                 return -ENOMEM;
13983
13984         new_rule->n_patterns = n_patterns;
13985         i = 0;
13986
13987         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13988                             rem) {
13989                 u8 *mask_pat;
13990
13991                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13992                                                   pat,
13993                                                   nl80211_packet_pattern_policy,
13994                                                   NULL);
13995                 if (err)
13996                         return err;
13997
13998                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13999                     !pat_tb[NL80211_PKTPAT_PATTERN])
14000                         return -EINVAL;
14001                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
14002                 mask_len = DIV_ROUND_UP(pat_len, 8);
14003                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
14004                         return -EINVAL;
14005                 if (pat_len > coalesce->pattern_max_len ||
14006                     pat_len < coalesce->pattern_min_len)
14007                         return -EINVAL;
14008
14009                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
14010                         pkt_offset = 0;
14011                 else
14012                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
14013                 if (pkt_offset > coalesce->max_pkt_offset)
14014                         return -EINVAL;
14015                 new_rule->patterns[i].pkt_offset = pkt_offset;
14016
14017                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
14018                 if (!mask_pat)
14019                         return -ENOMEM;
14020
14021                 new_rule->patterns[i].mask = mask_pat;
14022                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
14023                        mask_len);
14024
14025                 mask_pat += mask_len;
14026                 new_rule->patterns[i].pattern = mask_pat;
14027                 new_rule->patterns[i].pattern_len = pat_len;
14028                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
14029                        pat_len);
14030                 i++;
14031         }
14032
14033         return 0;
14034 }
14035
14036 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
14037 {
14038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14039         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
14040         struct cfg80211_coalesce new_coalesce = {};
14041         struct cfg80211_coalesce *n_coalesce;
14042         int err, rem_rule, n_rules = 0, i, j;
14043         struct nlattr *rule;
14044         struct cfg80211_coalesce_rules *tmp_rule;
14045
14046         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
14047                 return -EOPNOTSUPP;
14048
14049         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
14050                 cfg80211_rdev_free_coalesce(rdev);
14051                 rdev_set_coalesce(rdev, NULL);
14052                 return 0;
14053         }
14054
14055         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14056                             rem_rule)
14057                 n_rules++;
14058         if (n_rules > coalesce->n_rules)
14059                 return -EINVAL;
14060
14061         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
14062                                      GFP_KERNEL);
14063         if (!new_coalesce.rules)
14064                 return -ENOMEM;
14065
14066         new_coalesce.n_rules = n_rules;
14067         i = 0;
14068
14069         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
14070                             rem_rule) {
14071                 err = nl80211_parse_coalesce_rule(rdev, rule,
14072                                                   &new_coalesce.rules[i]);
14073                 if (err)
14074                         goto error;
14075
14076                 i++;
14077         }
14078
14079         err = rdev_set_coalesce(rdev, &new_coalesce);
14080         if (err)
14081                 goto error;
14082
14083         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
14084         if (!n_coalesce) {
14085                 err = -ENOMEM;
14086                 goto error;
14087         }
14088         cfg80211_rdev_free_coalesce(rdev);
14089         rdev->coalesce = n_coalesce;
14090
14091         return 0;
14092 error:
14093         for (i = 0; i < new_coalesce.n_rules; i++) {
14094                 tmp_rule = &new_coalesce.rules[i];
14095                 for (j = 0; j < tmp_rule->n_patterns; j++)
14096                         kfree(tmp_rule->patterns[j].mask);
14097                 kfree(tmp_rule->patterns);
14098         }
14099         kfree(new_coalesce.rules);
14100
14101         return err;
14102 }
14103
14104 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
14105 {
14106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14107         struct net_device *dev = info->user_ptr[1];
14108         struct wireless_dev *wdev = dev->ieee80211_ptr;
14109         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
14110         struct cfg80211_gtk_rekey_data rekey_data = {};
14111         int err;
14112
14113         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
14114                 return -EINVAL;
14115
14116         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
14117                                           info->attrs[NL80211_ATTR_REKEY_DATA],
14118                                           nl80211_rekey_policy, info->extack);
14119         if (err)
14120                 return err;
14121
14122         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
14123             !tb[NL80211_REKEY_DATA_KCK])
14124                 return -EINVAL;
14125         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
14126             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14127               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
14128                 return -ERANGE;
14129         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
14130             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
14131               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN) &&
14132              !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KCK_32 &&
14133                nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN_32))
14134                 return -ERANGE;
14135
14136         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
14137         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
14138         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
14139         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
14140         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
14141         if (tb[NL80211_REKEY_DATA_AKM])
14142                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
14143
14144         if (!wdev->connected)
14145                 return -ENOTCONN;
14146
14147         if (!rdev->ops->set_rekey_data)
14148                 return -EOPNOTSUPP;
14149
14150         return rdev_set_rekey_data(rdev, dev, &rekey_data);
14151 }
14152
14153 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
14154                                              struct genl_info *info)
14155 {
14156         struct net_device *dev = info->user_ptr[1];
14157         struct wireless_dev *wdev = dev->ieee80211_ptr;
14158
14159         if (wdev->iftype != NL80211_IFTYPE_AP &&
14160             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14161                 return -EINVAL;
14162
14163         if (wdev->ap_unexpected_nlportid)
14164                 return -EBUSY;
14165
14166         wdev->ap_unexpected_nlportid = info->snd_portid;
14167         return 0;
14168 }
14169
14170 static int nl80211_probe_client(struct sk_buff *skb,
14171                                 struct genl_info *info)
14172 {
14173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14174         struct net_device *dev = info->user_ptr[1];
14175         struct wireless_dev *wdev = dev->ieee80211_ptr;
14176         struct sk_buff *msg;
14177         void *hdr;
14178         const u8 *addr;
14179         u64 cookie;
14180         int err;
14181
14182         if (wdev->iftype != NL80211_IFTYPE_AP &&
14183             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14184                 return -EOPNOTSUPP;
14185
14186         if (!info->attrs[NL80211_ATTR_MAC])
14187                 return -EINVAL;
14188
14189         if (!rdev->ops->probe_client)
14190                 return -EOPNOTSUPP;
14191
14192         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14193         if (!msg)
14194                 return -ENOMEM;
14195
14196         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14197                              NL80211_CMD_PROBE_CLIENT);
14198         if (!hdr) {
14199                 err = -ENOBUFS;
14200                 goto free_msg;
14201         }
14202
14203         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14204
14205         err = rdev_probe_client(rdev, dev, addr, &cookie);
14206         if (err)
14207                 goto free_msg;
14208
14209         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14210                               NL80211_ATTR_PAD))
14211                 goto nla_put_failure;
14212
14213         genlmsg_end(msg, hdr);
14214
14215         return genlmsg_reply(msg, info);
14216
14217  nla_put_failure:
14218         err = -ENOBUFS;
14219  free_msg:
14220         nlmsg_free(msg);
14221         return err;
14222 }
14223
14224 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
14225 {
14226         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14227         struct cfg80211_beacon_registration *reg, *nreg;
14228         int rv;
14229
14230         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
14231                 return -EOPNOTSUPP;
14232
14233         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
14234         if (!nreg)
14235                 return -ENOMEM;
14236
14237         /* First, check if already registered. */
14238         spin_lock_bh(&rdev->beacon_registrations_lock);
14239         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
14240                 if (reg->nlportid == info->snd_portid) {
14241                         rv = -EALREADY;
14242                         goto out_err;
14243                 }
14244         }
14245         /* Add it to the list */
14246         nreg->nlportid = info->snd_portid;
14247         list_add(&nreg->list, &rdev->beacon_registrations);
14248
14249         spin_unlock_bh(&rdev->beacon_registrations_lock);
14250
14251         return 0;
14252 out_err:
14253         spin_unlock_bh(&rdev->beacon_registrations_lock);
14254         kfree(nreg);
14255         return rv;
14256 }
14257
14258 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
14259 {
14260         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14261         struct wireless_dev *wdev = info->user_ptr[1];
14262         int err;
14263
14264         if (!rdev->ops->start_p2p_device)
14265                 return -EOPNOTSUPP;
14266
14267         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14268                 return -EOPNOTSUPP;
14269
14270         if (wdev_running(wdev))
14271                 return 0;
14272
14273         if (rfkill_blocked(rdev->wiphy.rfkill))
14274                 return -ERFKILL;
14275
14276         err = rdev_start_p2p_device(rdev, wdev);
14277         if (err)
14278                 return err;
14279
14280         wdev->is_running = true;
14281         rdev->opencount++;
14282
14283         return 0;
14284 }
14285
14286 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
14287 {
14288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14289         struct wireless_dev *wdev = info->user_ptr[1];
14290
14291         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
14292                 return -EOPNOTSUPP;
14293
14294         if (!rdev->ops->stop_p2p_device)
14295                 return -EOPNOTSUPP;
14296
14297         cfg80211_stop_p2p_device(rdev, wdev);
14298
14299         return 0;
14300 }
14301
14302 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
14303 {
14304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14305         struct wireless_dev *wdev = info->user_ptr[1];
14306         struct cfg80211_nan_conf conf = {};
14307         int err;
14308
14309         if (wdev->iftype != NL80211_IFTYPE_NAN)
14310                 return -EOPNOTSUPP;
14311
14312         if (wdev_running(wdev))
14313                 return -EEXIST;
14314
14315         if (rfkill_blocked(rdev->wiphy.rfkill))
14316                 return -ERFKILL;
14317
14318         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14319                 return -EINVAL;
14320
14321         conf.master_pref =
14322                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14323
14324         if (info->attrs[NL80211_ATTR_BANDS]) {
14325                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14326
14327                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14328                         return -EOPNOTSUPP;
14329
14330                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14331                         return -EINVAL;
14332
14333                 conf.bands = bands;
14334         }
14335
14336         err = rdev_start_nan(rdev, wdev, &conf);
14337         if (err)
14338                 return err;
14339
14340         wdev->is_running = true;
14341         rdev->opencount++;
14342
14343         return 0;
14344 }
14345
14346 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14347 {
14348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14349         struct wireless_dev *wdev = info->user_ptr[1];
14350
14351         if (wdev->iftype != NL80211_IFTYPE_NAN)
14352                 return -EOPNOTSUPP;
14353
14354         cfg80211_stop_nan(rdev, wdev);
14355
14356         return 0;
14357 }
14358
14359 static int validate_nan_filter(struct nlattr *filter_attr)
14360 {
14361         struct nlattr *attr;
14362         int len = 0, n_entries = 0, rem;
14363
14364         nla_for_each_nested(attr, filter_attr, rem) {
14365                 len += nla_len(attr);
14366                 n_entries++;
14367         }
14368
14369         if (len >= U8_MAX)
14370                 return -EINVAL;
14371
14372         return n_entries;
14373 }
14374
14375 static int handle_nan_filter(struct nlattr *attr_filter,
14376                              struct cfg80211_nan_func *func,
14377                              bool tx)
14378 {
14379         struct nlattr *attr;
14380         int n_entries, rem, i;
14381         struct cfg80211_nan_func_filter *filter;
14382
14383         n_entries = validate_nan_filter(attr_filter);
14384         if (n_entries < 0)
14385                 return n_entries;
14386
14387         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14388
14389         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14390         if (!filter)
14391                 return -ENOMEM;
14392
14393         i = 0;
14394         nla_for_each_nested(attr, attr_filter, rem) {
14395                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14396                 if (!filter[i].filter)
14397                         goto err;
14398
14399                 filter[i].len = nla_len(attr);
14400                 i++;
14401         }
14402         if (tx) {
14403                 func->num_tx_filters = n_entries;
14404                 func->tx_filters = filter;
14405         } else {
14406                 func->num_rx_filters = n_entries;
14407                 func->rx_filters = filter;
14408         }
14409
14410         return 0;
14411
14412 err:
14413         i = 0;
14414         nla_for_each_nested(attr, attr_filter, rem) {
14415                 kfree(filter[i].filter);
14416                 i++;
14417         }
14418         kfree(filter);
14419         return -ENOMEM;
14420 }
14421
14422 static int nl80211_nan_add_func(struct sk_buff *skb,
14423                                 struct genl_info *info)
14424 {
14425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14426         struct wireless_dev *wdev = info->user_ptr[1];
14427         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14428         struct cfg80211_nan_func *func;
14429         struct sk_buff *msg = NULL;
14430         void *hdr = NULL;
14431         int err = 0;
14432
14433         if (wdev->iftype != NL80211_IFTYPE_NAN)
14434                 return -EOPNOTSUPP;
14435
14436         if (!wdev_running(wdev))
14437                 return -ENOTCONN;
14438
14439         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14440                 return -EINVAL;
14441
14442         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14443                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14444                                           nl80211_nan_func_policy,
14445                                           info->extack);
14446         if (err)
14447                 return err;
14448
14449         func = kzalloc(sizeof(*func), GFP_KERNEL);
14450         if (!func)
14451                 return -ENOMEM;
14452
14453         func->cookie = cfg80211_assign_cookie(rdev);
14454
14455         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14456                 err = -EINVAL;
14457                 goto out;
14458         }
14459
14460
14461         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14462
14463         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14464                 err = -EINVAL;
14465                 goto out;
14466         }
14467
14468         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14469                sizeof(func->service_id));
14470
14471         func->close_range =
14472                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14473
14474         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14475                 func->serv_spec_info_len =
14476                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14477                 func->serv_spec_info =
14478                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14479                                 func->serv_spec_info_len,
14480                                 GFP_KERNEL);
14481                 if (!func->serv_spec_info) {
14482                         err = -ENOMEM;
14483                         goto out;
14484                 }
14485         }
14486
14487         if (tb[NL80211_NAN_FUNC_TTL])
14488                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14489
14490         switch (func->type) {
14491         case NL80211_NAN_FUNC_PUBLISH:
14492                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14493                         err = -EINVAL;
14494                         goto out;
14495                 }
14496
14497                 func->publish_type =
14498                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14499                 func->publish_bcast =
14500                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14501
14502                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14503                         func->publish_bcast) {
14504                         err = -EINVAL;
14505                         goto out;
14506                 }
14507                 break;
14508         case NL80211_NAN_FUNC_SUBSCRIBE:
14509                 func->subscribe_active =
14510                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14511                 break;
14512         case NL80211_NAN_FUNC_FOLLOW_UP:
14513                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14514                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14515                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14516                         err = -EINVAL;
14517                         goto out;
14518                 }
14519
14520                 func->followup_id =
14521                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14522                 func->followup_reqid =
14523                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14524                 memcpy(func->followup_dest.addr,
14525                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14526                        sizeof(func->followup_dest.addr));
14527                 if (func->ttl) {
14528                         err = -EINVAL;
14529                         goto out;
14530                 }
14531                 break;
14532         default:
14533                 err = -EINVAL;
14534                 goto out;
14535         }
14536
14537         if (tb[NL80211_NAN_FUNC_SRF]) {
14538                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14539
14540                 err = nla_parse_nested_deprecated(srf_tb,
14541                                                   NL80211_NAN_SRF_ATTR_MAX,
14542                                                   tb[NL80211_NAN_FUNC_SRF],
14543                                                   nl80211_nan_srf_policy,
14544                                                   info->extack);
14545                 if (err)
14546                         goto out;
14547
14548                 func->srf_include =
14549                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14550
14551                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14552                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14553                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14554                                 err = -EINVAL;
14555                                 goto out;
14556                         }
14557
14558                         func->srf_bf_len =
14559                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14560                         func->srf_bf =
14561                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14562                                         func->srf_bf_len, GFP_KERNEL);
14563                         if (!func->srf_bf) {
14564                                 err = -ENOMEM;
14565                                 goto out;
14566                         }
14567
14568                         func->srf_bf_idx =
14569                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14570                 } else {
14571                         struct nlattr *attr, *mac_attr =
14572                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14573                         int n_entries, rem, i = 0;
14574
14575                         if (!mac_attr) {
14576                                 err = -EINVAL;
14577                                 goto out;
14578                         }
14579
14580                         n_entries = validate_acl_mac_addrs(mac_attr);
14581                         if (n_entries <= 0) {
14582                                 err = -EINVAL;
14583                                 goto out;
14584                         }
14585
14586                         func->srf_num_macs = n_entries;
14587                         func->srf_macs =
14588                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14589                                         GFP_KERNEL);
14590                         if (!func->srf_macs) {
14591                                 err = -ENOMEM;
14592                                 goto out;
14593                         }
14594
14595                         nla_for_each_nested(attr, mac_attr, rem)
14596                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14597                                        sizeof(*func->srf_macs));
14598                 }
14599         }
14600
14601         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14602                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14603                                         func, true);
14604                 if (err)
14605                         goto out;
14606         }
14607
14608         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14609                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14610                                         func, false);
14611                 if (err)
14612                         goto out;
14613         }
14614
14615         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14616         if (!msg) {
14617                 err = -ENOMEM;
14618                 goto out;
14619         }
14620
14621         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14622                              NL80211_CMD_ADD_NAN_FUNCTION);
14623         /* This can't really happen - we just allocated 4KB */
14624         if (WARN_ON(!hdr)) {
14625                 err = -ENOMEM;
14626                 goto out;
14627         }
14628
14629         err = rdev_add_nan_func(rdev, wdev, func);
14630 out:
14631         if (err < 0) {
14632                 cfg80211_free_nan_func(func);
14633                 nlmsg_free(msg);
14634                 return err;
14635         }
14636
14637         /* propagate the instance id and cookie to userspace  */
14638         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14639                               NL80211_ATTR_PAD))
14640                 goto nla_put_failure;
14641
14642         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14643         if (!func_attr)
14644                 goto nla_put_failure;
14645
14646         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14647                        func->instance_id))
14648                 goto nla_put_failure;
14649
14650         nla_nest_end(msg, func_attr);
14651
14652         genlmsg_end(msg, hdr);
14653         return genlmsg_reply(msg, info);
14654
14655 nla_put_failure:
14656         nlmsg_free(msg);
14657         return -ENOBUFS;
14658 }
14659
14660 static int nl80211_nan_del_func(struct sk_buff *skb,
14661                                struct genl_info *info)
14662 {
14663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14664         struct wireless_dev *wdev = info->user_ptr[1];
14665         u64 cookie;
14666
14667         if (wdev->iftype != NL80211_IFTYPE_NAN)
14668                 return -EOPNOTSUPP;
14669
14670         if (!wdev_running(wdev))
14671                 return -ENOTCONN;
14672
14673         if (!info->attrs[NL80211_ATTR_COOKIE])
14674                 return -EINVAL;
14675
14676         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14677
14678         rdev_del_nan_func(rdev, wdev, cookie);
14679
14680         return 0;
14681 }
14682
14683 static int nl80211_nan_change_config(struct sk_buff *skb,
14684                                      struct genl_info *info)
14685 {
14686         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14687         struct wireless_dev *wdev = info->user_ptr[1];
14688         struct cfg80211_nan_conf conf = {};
14689         u32 changed = 0;
14690
14691         if (wdev->iftype != NL80211_IFTYPE_NAN)
14692                 return -EOPNOTSUPP;
14693
14694         if (!wdev_running(wdev))
14695                 return -ENOTCONN;
14696
14697         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14698                 conf.master_pref =
14699                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14700                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14701                         return -EINVAL;
14702
14703                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14704         }
14705
14706         if (info->attrs[NL80211_ATTR_BANDS]) {
14707                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14708
14709                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14710                         return -EOPNOTSUPP;
14711
14712                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14713                         return -EINVAL;
14714
14715                 conf.bands = bands;
14716                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14717         }
14718
14719         if (!changed)
14720                 return -EINVAL;
14721
14722         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14723 }
14724
14725 void cfg80211_nan_match(struct wireless_dev *wdev,
14726                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14727 {
14728         struct wiphy *wiphy = wdev->wiphy;
14729         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14730         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14731         struct sk_buff *msg;
14732         void *hdr;
14733
14734         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14735                 return;
14736
14737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14738         if (!msg)
14739                 return;
14740
14741         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14742         if (!hdr) {
14743                 nlmsg_free(msg);
14744                 return;
14745         }
14746
14747         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14748             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14749                                          wdev->netdev->ifindex)) ||
14750             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14751                               NL80211_ATTR_PAD))
14752                 goto nla_put_failure;
14753
14754         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14755                               NL80211_ATTR_PAD) ||
14756             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14757                 goto nla_put_failure;
14758
14759         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14760         if (!match_attr)
14761                 goto nla_put_failure;
14762
14763         local_func_attr = nla_nest_start_noflag(msg,
14764                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14765         if (!local_func_attr)
14766                 goto nla_put_failure;
14767
14768         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14769                 goto nla_put_failure;
14770
14771         nla_nest_end(msg, local_func_attr);
14772
14773         peer_func_attr = nla_nest_start_noflag(msg,
14774                                                NL80211_NAN_MATCH_FUNC_PEER);
14775         if (!peer_func_attr)
14776                 goto nla_put_failure;
14777
14778         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14779             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14780                 goto nla_put_failure;
14781
14782         if (match->info && match->info_len &&
14783             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14784                     match->info))
14785                 goto nla_put_failure;
14786
14787         nla_nest_end(msg, peer_func_attr);
14788         nla_nest_end(msg, match_attr);
14789         genlmsg_end(msg, hdr);
14790
14791         if (!wdev->owner_nlportid)
14792                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14793                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14794         else
14795                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14796                                 wdev->owner_nlportid);
14797
14798         return;
14799
14800 nla_put_failure:
14801         nlmsg_free(msg);
14802 }
14803 EXPORT_SYMBOL(cfg80211_nan_match);
14804
14805 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14806                                   u8 inst_id,
14807                                   enum nl80211_nan_func_term_reason reason,
14808                                   u64 cookie, gfp_t gfp)
14809 {
14810         struct wiphy *wiphy = wdev->wiphy;
14811         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14812         struct sk_buff *msg;
14813         struct nlattr *func_attr;
14814         void *hdr;
14815
14816         if (WARN_ON(!inst_id))
14817                 return;
14818
14819         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14820         if (!msg)
14821                 return;
14822
14823         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14824         if (!hdr) {
14825                 nlmsg_free(msg);
14826                 return;
14827         }
14828
14829         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14830             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14831                                          wdev->netdev->ifindex)) ||
14832             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14833                               NL80211_ATTR_PAD))
14834                 goto nla_put_failure;
14835
14836         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14837                               NL80211_ATTR_PAD))
14838                 goto nla_put_failure;
14839
14840         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14841         if (!func_attr)
14842                 goto nla_put_failure;
14843
14844         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14845             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14846                 goto nla_put_failure;
14847
14848         nla_nest_end(msg, func_attr);
14849         genlmsg_end(msg, hdr);
14850
14851         if (!wdev->owner_nlportid)
14852                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14853                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14854         else
14855                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14856                                 wdev->owner_nlportid);
14857
14858         return;
14859
14860 nla_put_failure:
14861         nlmsg_free(msg);
14862 }
14863 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14864
14865 static int nl80211_get_protocol_features(struct sk_buff *skb,
14866                                          struct genl_info *info)
14867 {
14868         void *hdr;
14869         struct sk_buff *msg;
14870
14871         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14872         if (!msg)
14873                 return -ENOMEM;
14874
14875         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14876                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14877         if (!hdr)
14878                 goto nla_put_failure;
14879
14880         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14881                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14882                 goto nla_put_failure;
14883
14884         genlmsg_end(msg, hdr);
14885         return genlmsg_reply(msg, info);
14886
14887  nla_put_failure:
14888         kfree_skb(msg);
14889         return -ENOBUFS;
14890 }
14891
14892 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14893 {
14894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14895         struct cfg80211_update_ft_ies_params ft_params;
14896         struct net_device *dev = info->user_ptr[1];
14897
14898         if (!rdev->ops->update_ft_ies)
14899                 return -EOPNOTSUPP;
14900
14901         if (!info->attrs[NL80211_ATTR_MDID] ||
14902             !info->attrs[NL80211_ATTR_IE])
14903                 return -EINVAL;
14904
14905         memset(&ft_params, 0, sizeof(ft_params));
14906         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14907         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14908         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14909
14910         return rdev_update_ft_ies(rdev, dev, &ft_params);
14911 }
14912
14913 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14914                                        struct genl_info *info)
14915 {
14916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14917         struct wireless_dev *wdev = info->user_ptr[1];
14918         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14919         u16 duration;
14920         int ret;
14921
14922         if (!rdev->ops->crit_proto_start)
14923                 return -EOPNOTSUPP;
14924
14925         if (WARN_ON(!rdev->ops->crit_proto_stop))
14926                 return -EINVAL;
14927
14928         if (rdev->crit_proto_nlportid)
14929                 return -EBUSY;
14930
14931         /* determine protocol if provided */
14932         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14933                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14934
14935         if (proto >= NUM_NL80211_CRIT_PROTO)
14936                 return -EINVAL;
14937
14938         /* timeout must be provided */
14939         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14940                 return -EINVAL;
14941
14942         duration =
14943                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14944
14945         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14946         if (!ret)
14947                 rdev->crit_proto_nlportid = info->snd_portid;
14948
14949         return ret;
14950 }
14951
14952 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14953                                       struct genl_info *info)
14954 {
14955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14956         struct wireless_dev *wdev = info->user_ptr[1];
14957
14958         if (!rdev->ops->crit_proto_stop)
14959                 return -EOPNOTSUPP;
14960
14961         if (rdev->crit_proto_nlportid) {
14962                 rdev->crit_proto_nlportid = 0;
14963                 rdev_crit_proto_stop(rdev, wdev);
14964         }
14965         return 0;
14966 }
14967
14968 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14969                                        struct nlattr *attr,
14970                                        struct netlink_ext_ack *extack)
14971 {
14972         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14973                 if (attr->nla_type & NLA_F_NESTED) {
14974                         NL_SET_ERR_MSG_ATTR(extack, attr,
14975                                             "unexpected nested data");
14976                         return -EINVAL;
14977                 }
14978
14979                 return 0;
14980         }
14981
14982         if (!(attr->nla_type & NLA_F_NESTED)) {
14983                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14984                 return -EINVAL;
14985         }
14986
14987         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14988 }
14989
14990 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14991 {
14992         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14993         struct wireless_dev *wdev =
14994                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14995                                            info->attrs);
14996         int i, err;
14997         u32 vid, subcmd;
14998
14999         if (!rdev->wiphy.vendor_commands)
15000                 return -EOPNOTSUPP;
15001
15002         if (IS_ERR(wdev)) {
15003                 err = PTR_ERR(wdev);
15004                 if (err != -EINVAL)
15005                         return err;
15006                 wdev = NULL;
15007         } else if (wdev->wiphy != &rdev->wiphy) {
15008                 return -EINVAL;
15009         }
15010
15011         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
15012             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
15013                 return -EINVAL;
15014
15015         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
15016         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
15017         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
15018                 const struct wiphy_vendor_command *vcmd;
15019                 void *data = NULL;
15020                 int len = 0;
15021
15022                 vcmd = &rdev->wiphy.vendor_commands[i];
15023
15024                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15025                         continue;
15026
15027                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15028                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15029                         if (!wdev)
15030                                 return -EINVAL;
15031                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15032                             !wdev->netdev)
15033                                 return -EINVAL;
15034
15035                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15036                                 if (!wdev_running(wdev))
15037                                         return -ENETDOWN;
15038                         }
15039                 } else {
15040                         wdev = NULL;
15041                 }
15042
15043                 if (!vcmd->doit)
15044                         return -EOPNOTSUPP;
15045
15046                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
15047                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15048                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
15049
15050                         err = nl80211_vendor_check_policy(vcmd,
15051                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
15052                                         info->extack);
15053                         if (err)
15054                                 return err;
15055                 }
15056
15057                 rdev->cur_cmd_info = info;
15058                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
15059                 rdev->cur_cmd_info = NULL;
15060                 return err;
15061         }
15062
15063         return -EOPNOTSUPP;
15064 }
15065
15066 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
15067                                        struct netlink_callback *cb,
15068                                        struct cfg80211_registered_device **rdev,
15069                                        struct wireless_dev **wdev)
15070 {
15071         struct nlattr **attrbuf;
15072         u32 vid, subcmd;
15073         unsigned int i;
15074         int vcmd_idx = -1;
15075         int err;
15076         void *data = NULL;
15077         unsigned int data_len = 0;
15078
15079         if (cb->args[0]) {
15080                 /* subtract the 1 again here */
15081                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
15082                 struct wireless_dev *tmp;
15083
15084                 if (!wiphy)
15085                         return -ENODEV;
15086                 *rdev = wiphy_to_rdev(wiphy);
15087                 *wdev = NULL;
15088
15089                 if (cb->args[1]) {
15090                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
15091                                 if (tmp->identifier == cb->args[1] - 1) {
15092                                         *wdev = tmp;
15093                                         break;
15094                                 }
15095                         }
15096                 }
15097
15098                 /* keep rtnl locked in successful case */
15099                 return 0;
15100         }
15101
15102         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
15103         if (!attrbuf)
15104                 return -ENOMEM;
15105
15106         err = nlmsg_parse_deprecated(cb->nlh,
15107                                      GENL_HDRLEN + nl80211_fam.hdrsize,
15108                                      attrbuf, nl80211_fam.maxattr,
15109                                      nl80211_policy, NULL);
15110         if (err)
15111                 goto out;
15112
15113         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
15114             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
15115                 err = -EINVAL;
15116                 goto out;
15117         }
15118
15119         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
15120         if (IS_ERR(*wdev))
15121                 *wdev = NULL;
15122
15123         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
15124         if (IS_ERR(*rdev)) {
15125                 err = PTR_ERR(*rdev);
15126                 goto out;
15127         }
15128
15129         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
15130         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
15131
15132         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
15133                 const struct wiphy_vendor_command *vcmd;
15134
15135                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
15136
15137                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
15138                         continue;
15139
15140                 if (!vcmd->dumpit) {
15141                         err = -EOPNOTSUPP;
15142                         goto out;
15143                 }
15144
15145                 vcmd_idx = i;
15146                 break;
15147         }
15148
15149         if (vcmd_idx < 0) {
15150                 err = -EOPNOTSUPP;
15151                 goto out;
15152         }
15153
15154         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
15155                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15156                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
15157
15158                 err = nl80211_vendor_check_policy(
15159                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
15160                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
15161                                 cb->extack);
15162                 if (err)
15163                         goto out;
15164         }
15165
15166         /* 0 is the first index - add 1 to parse only once */
15167         cb->args[0] = (*rdev)->wiphy_idx + 1;
15168         /* add 1 to know if it was NULL */
15169         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
15170         cb->args[2] = vcmd_idx;
15171         cb->args[3] = (unsigned long)data;
15172         cb->args[4] = data_len;
15173
15174         /* keep rtnl locked in successful case */
15175         err = 0;
15176 out:
15177         kfree(attrbuf);
15178         return err;
15179 }
15180
15181 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
15182                                    struct netlink_callback *cb)
15183 {
15184         struct cfg80211_registered_device *rdev;
15185         struct wireless_dev *wdev;
15186         unsigned int vcmd_idx;
15187         const struct wiphy_vendor_command *vcmd;
15188         void *data;
15189         int data_len;
15190         int err;
15191         struct nlattr *vendor_data;
15192
15193         rtnl_lock();
15194         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
15195         if (err)
15196                 goto out;
15197
15198         vcmd_idx = cb->args[2];
15199         data = (void *)cb->args[3];
15200         data_len = cb->args[4];
15201         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
15202
15203         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
15204                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
15205                 if (!wdev) {
15206                         err = -EINVAL;
15207                         goto out;
15208                 }
15209                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
15210                     !wdev->netdev) {
15211                         err = -EINVAL;
15212                         goto out;
15213                 }
15214
15215                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
15216                         if (!wdev_running(wdev)) {
15217                                 err = -ENETDOWN;
15218                                 goto out;
15219                         }
15220                 }
15221         }
15222
15223         while (1) {
15224                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
15225                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
15226                                            NL80211_CMD_VENDOR);
15227                 if (!hdr)
15228                         break;
15229
15230                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15231                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
15232                                                wdev_id(wdev),
15233                                                NL80211_ATTR_PAD))) {
15234                         genlmsg_cancel(skb, hdr);
15235                         break;
15236                 }
15237
15238                 vendor_data = nla_nest_start_noflag(skb,
15239                                                     NL80211_ATTR_VENDOR_DATA);
15240                 if (!vendor_data) {
15241                         genlmsg_cancel(skb, hdr);
15242                         break;
15243                 }
15244
15245                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
15246                                    (unsigned long *)&cb->args[5]);
15247                 nla_nest_end(skb, vendor_data);
15248
15249                 if (err == -ENOBUFS || err == -ENOENT) {
15250                         genlmsg_cancel(skb, hdr);
15251                         break;
15252                 } else if (err <= 0) {
15253                         genlmsg_cancel(skb, hdr);
15254                         goto out;
15255                 }
15256
15257                 genlmsg_end(skb, hdr);
15258         }
15259
15260         err = skb->len;
15261  out:
15262         rtnl_unlock();
15263         return err;
15264 }
15265
15266 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
15267                                            enum nl80211_commands cmd,
15268                                            enum nl80211_attrs attr,
15269                                            int approxlen)
15270 {
15271         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15272
15273         if (WARN_ON(!rdev->cur_cmd_info))
15274                 return NULL;
15275
15276         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
15277                                            rdev->cur_cmd_info->snd_portid,
15278                                            rdev->cur_cmd_info->snd_seq,
15279                                            cmd, attr, NULL, GFP_KERNEL);
15280 }
15281 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
15282
15283 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
15284 {
15285         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
15286         void *hdr = ((void **)skb->cb)[1];
15287         struct nlattr *data = ((void **)skb->cb)[2];
15288
15289         /* clear CB data for netlink core to own from now on */
15290         memset(skb->cb, 0, sizeof(skb->cb));
15291
15292         if (WARN_ON(!rdev->cur_cmd_info)) {
15293                 kfree_skb(skb);
15294                 return -EINVAL;
15295         }
15296
15297         nla_nest_end(skb, data);
15298         genlmsg_end(skb, hdr);
15299         return genlmsg_reply(skb, rdev->cur_cmd_info);
15300 }
15301 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
15302
15303 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
15304 {
15305         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15306
15307         if (WARN_ON(!rdev->cur_cmd_info))
15308                 return 0;
15309
15310         return rdev->cur_cmd_info->snd_portid;
15311 }
15312 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
15313
15314 static int nl80211_set_qos_map(struct sk_buff *skb,
15315                                struct genl_info *info)
15316 {
15317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15318         struct cfg80211_qos_map *qos_map = NULL;
15319         struct net_device *dev = info->user_ptr[1];
15320         u8 *pos, len, num_des, des_len, des;
15321         int ret;
15322
15323         if (!rdev->ops->set_qos_map)
15324                 return -EOPNOTSUPP;
15325
15326         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15327                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15328                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15329
15330                 if (len % 2)
15331                         return -EINVAL;
15332
15333                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15334                 if (!qos_map)
15335                         return -ENOMEM;
15336
15337                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15338                 if (num_des) {
15339                         des_len = num_des *
15340                                 sizeof(struct cfg80211_dscp_exception);
15341                         memcpy(qos_map->dscp_exception, pos, des_len);
15342                         qos_map->num_des = num_des;
15343                         for (des = 0; des < num_des; des++) {
15344                                 if (qos_map->dscp_exception[des].up > 7) {
15345                                         kfree(qos_map);
15346                                         return -EINVAL;
15347                                 }
15348                         }
15349                         pos += des_len;
15350                 }
15351                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15352         }
15353
15354         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15355         if (!ret)
15356                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15357
15358         kfree(qos_map);
15359         return ret;
15360 }
15361
15362 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15363 {
15364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15365         struct net_device *dev = info->user_ptr[1];
15366         struct wireless_dev *wdev = dev->ieee80211_ptr;
15367         const u8 *peer;
15368         u8 tsid, up;
15369         u16 admitted_time = 0;
15370
15371         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15372                 return -EOPNOTSUPP;
15373
15374         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15375             !info->attrs[NL80211_ATTR_USER_PRIO])
15376                 return -EINVAL;
15377
15378         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15379         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15380
15381         /* WMM uses TIDs 0-7 even for TSPEC */
15382         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15383                 /* TODO: handle 802.11 TSPEC/admission control
15384                  * need more attributes for that (e.g. BA session requirement);
15385                  * change the WMM adminssion test above to allow both then
15386                  */
15387                 return -EINVAL;
15388         }
15389
15390         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15391
15392         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15393                 admitted_time =
15394                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15395                 if (!admitted_time)
15396                         return -EINVAL;
15397         }
15398
15399         switch (wdev->iftype) {
15400         case NL80211_IFTYPE_STATION:
15401         case NL80211_IFTYPE_P2P_CLIENT:
15402                 if (wdev->connected)
15403                         break;
15404                 return -ENOTCONN;
15405         default:
15406                 return -EOPNOTSUPP;
15407         }
15408
15409         return rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15410 }
15411
15412 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15413 {
15414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15415         struct net_device *dev = info->user_ptr[1];
15416         const u8 *peer;
15417         u8 tsid;
15418
15419         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15420                 return -EINVAL;
15421
15422         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15423         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15424
15425         return rdev_del_tx_ts(rdev, dev, tsid, peer);
15426 }
15427
15428 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15429                                        struct genl_info *info)
15430 {
15431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15432         struct net_device *dev = info->user_ptr[1];
15433         struct wireless_dev *wdev = dev->ieee80211_ptr;
15434         struct cfg80211_chan_def chandef = {};
15435         const u8 *addr;
15436         u8 oper_class;
15437         int err;
15438
15439         if (!rdev->ops->tdls_channel_switch ||
15440             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15441                 return -EOPNOTSUPP;
15442
15443         switch (dev->ieee80211_ptr->iftype) {
15444         case NL80211_IFTYPE_STATION:
15445         case NL80211_IFTYPE_P2P_CLIENT:
15446                 break;
15447         default:
15448                 return -EOPNOTSUPP;
15449         }
15450
15451         if (!info->attrs[NL80211_ATTR_MAC] ||
15452             !info->attrs[NL80211_ATTR_OPER_CLASS])
15453                 return -EINVAL;
15454
15455         err = nl80211_parse_chandef(rdev, info, &chandef);
15456         if (err)
15457                 return err;
15458
15459         /*
15460          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15461          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15462          * specification is not defined for them.
15463          */
15464         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15465             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15466             chandef.width != NL80211_CHAN_WIDTH_20)
15467                 return -EINVAL;
15468
15469         /* we will be active on the TDLS link */
15470         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15471                                            wdev->iftype))
15472                 return -EINVAL;
15473
15474         /* don't allow switching to DFS channels */
15475         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15476                 return -EINVAL;
15477
15478         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15479         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15480
15481         return rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15482 }
15483
15484 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15485                                               struct genl_info *info)
15486 {
15487         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15488         struct net_device *dev = info->user_ptr[1];
15489         const u8 *addr;
15490
15491         if (!rdev->ops->tdls_channel_switch ||
15492             !rdev->ops->tdls_cancel_channel_switch ||
15493             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15494                 return -EOPNOTSUPP;
15495
15496         switch (dev->ieee80211_ptr->iftype) {
15497         case NL80211_IFTYPE_STATION:
15498         case NL80211_IFTYPE_P2P_CLIENT:
15499                 break;
15500         default:
15501                 return -EOPNOTSUPP;
15502         }
15503
15504         if (!info->attrs[NL80211_ATTR_MAC])
15505                 return -EINVAL;
15506
15507         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15508
15509         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15510
15511         return 0;
15512 }
15513
15514 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15515                                             struct genl_info *info)
15516 {
15517         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15518         struct net_device *dev = info->user_ptr[1];
15519         struct wireless_dev *wdev = dev->ieee80211_ptr;
15520         const struct nlattr *nla;
15521         bool enabled;
15522
15523         if (!rdev->ops->set_multicast_to_unicast)
15524                 return -EOPNOTSUPP;
15525
15526         if (wdev->iftype != NL80211_IFTYPE_AP &&
15527             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15528                 return -EOPNOTSUPP;
15529
15530         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15531         enabled = nla_get_flag(nla);
15532
15533         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15534 }
15535
15536 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15537 {
15538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15539         struct net_device *dev = info->user_ptr[1];
15540         struct wireless_dev *wdev = dev->ieee80211_ptr;
15541         struct cfg80211_pmk_conf pmk_conf = {};
15542
15543         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15544             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15545                 return -EOPNOTSUPP;
15546
15547         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15548                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15549                 return -EOPNOTSUPP;
15550
15551         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15552                 return -EINVAL;
15553
15554         if (!wdev->connected)
15555                 return -ENOTCONN;
15556
15557         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15558         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN))
15559                 return -EINVAL;
15560
15561         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15562         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15563         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15564             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192)
15565                 return -EINVAL;
15566
15567         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15568                 pmk_conf.pmk_r0_name =
15569                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15570
15571         return rdev_set_pmk(rdev, dev, &pmk_conf);
15572 }
15573
15574 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15575 {
15576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15577         struct net_device *dev = info->user_ptr[1];
15578         struct wireless_dev *wdev = dev->ieee80211_ptr;
15579         const u8 *aa;
15580
15581         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15582             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15583                 return -EOPNOTSUPP;
15584
15585         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15586                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15587                 return -EOPNOTSUPP;
15588
15589         if (!info->attrs[NL80211_ATTR_MAC])
15590                 return -EINVAL;
15591
15592         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15593         return rdev_del_pmk(rdev, dev, aa);
15594 }
15595
15596 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15597 {
15598         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15599         struct net_device *dev = info->user_ptr[1];
15600         struct cfg80211_external_auth_params params;
15601
15602         if (!rdev->ops->external_auth)
15603                 return -EOPNOTSUPP;
15604
15605         if (!info->attrs[NL80211_ATTR_SSID] &&
15606             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15607             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15608                 return -EINVAL;
15609
15610         if (!info->attrs[NL80211_ATTR_BSSID])
15611                 return -EINVAL;
15612
15613         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15614                 return -EINVAL;
15615
15616         memset(&params, 0, sizeof(params));
15617
15618         if (info->attrs[NL80211_ATTR_SSID]) {
15619                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15620                 if (params.ssid.ssid_len == 0)
15621                         return -EINVAL;
15622                 memcpy(params.ssid.ssid,
15623                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15624                        params.ssid.ssid_len);
15625         }
15626
15627         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15628                ETH_ALEN);
15629
15630         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15631
15632         if (info->attrs[NL80211_ATTR_PMKID])
15633                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15634
15635         return rdev_external_auth(rdev, dev, &params);
15636 }
15637
15638 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15639 {
15640         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
15641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15642         struct net_device *dev = info->user_ptr[1];
15643         struct wireless_dev *wdev = dev->ieee80211_ptr;
15644         const u8 *buf;
15645         size_t len;
15646         u8 *dest;
15647         u16 proto;
15648         bool noencrypt;
15649         u64 cookie = 0;
15650         int link_id;
15651         int err;
15652
15653         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15654                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15655                 return -EOPNOTSUPP;
15656
15657         if (!rdev->ops->tx_control_port)
15658                 return -EOPNOTSUPP;
15659
15660         if (!info->attrs[NL80211_ATTR_FRAME] ||
15661             !info->attrs[NL80211_ATTR_MAC] ||
15662             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15663                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15664                 return -EINVAL;
15665         }
15666
15667         switch (wdev->iftype) {
15668         case NL80211_IFTYPE_AP:
15669         case NL80211_IFTYPE_P2P_GO:
15670         case NL80211_IFTYPE_MESH_POINT:
15671                 break;
15672         case NL80211_IFTYPE_ADHOC:
15673                 if (wdev->u.ibss.current_bss)
15674                         break;
15675                 return -ENOTCONN;
15676         case NL80211_IFTYPE_STATION:
15677         case NL80211_IFTYPE_P2P_CLIENT:
15678                 if (wdev->connected)
15679                         break;
15680                 return -ENOTCONN;
15681         default:
15682                 return -EOPNOTSUPP;
15683         }
15684
15685         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15686         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15687         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15688         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15689         noencrypt =
15690                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15691
15692         link_id = nl80211_link_id_or_invalid(info->attrs);
15693
15694         err = rdev_tx_control_port(rdev, dev, buf, len,
15695                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15696                                    dont_wait_for_ack ? NULL : &cookie);
15697         if (!err && !dont_wait_for_ack)
15698                 nl_set_extack_cookie_u64(info->extack, cookie);
15699         return err;
15700 }
15701
15702 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15703                                            struct genl_info *info)
15704 {
15705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15706         struct net_device *dev = info->user_ptr[1];
15707         struct wireless_dev *wdev = dev->ieee80211_ptr;
15708         struct cfg80211_ftm_responder_stats ftm_stats = {};
15709         unsigned int link_id = nl80211_link_id(info->attrs);
15710         struct sk_buff *msg;
15711         void *hdr;
15712         struct nlattr *ftm_stats_attr;
15713         int err;
15714
15715         if (wdev->iftype != NL80211_IFTYPE_AP ||
15716             !wdev->links[link_id].ap.beacon_interval)
15717                 return -EOPNOTSUPP;
15718
15719         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15720         if (err)
15721                 return err;
15722
15723         if (!ftm_stats.filled)
15724                 return -ENODATA;
15725
15726         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15727         if (!msg)
15728                 return -ENOMEM;
15729
15730         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15731                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15732         if (!hdr)
15733                 goto nla_put_failure;
15734
15735         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15736                 goto nla_put_failure;
15737
15738         ftm_stats_attr = nla_nest_start_noflag(msg,
15739                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15740         if (!ftm_stats_attr)
15741                 goto nla_put_failure;
15742
15743 #define SET_FTM(field, name, type)                                       \
15744         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15745             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15746                              ftm_stats.field))                           \
15747                 goto nla_put_failure; } while (0)
15748 #define SET_FTM_U64(field, name)                                         \
15749         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15750             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15751                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15752                 goto nla_put_failure; } while (0)
15753
15754         SET_FTM(success_num, SUCCESS_NUM, u32);
15755         SET_FTM(partial_num, PARTIAL_NUM, u32);
15756         SET_FTM(failed_num, FAILED_NUM, u32);
15757         SET_FTM(asap_num, ASAP_NUM, u32);
15758         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15759         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15760         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15761         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15762         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15763 #undef SET_FTM
15764
15765         nla_nest_end(msg, ftm_stats_attr);
15766
15767         genlmsg_end(msg, hdr);
15768         return genlmsg_reply(msg, info);
15769
15770 nla_put_failure:
15771         nlmsg_free(msg);
15772         return -ENOBUFS;
15773 }
15774
15775 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15776 {
15777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15778         struct cfg80211_update_owe_info owe_info;
15779         struct net_device *dev = info->user_ptr[1];
15780
15781         if (!rdev->ops->update_owe_info)
15782                 return -EOPNOTSUPP;
15783
15784         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15785             !info->attrs[NL80211_ATTR_MAC])
15786                 return -EINVAL;
15787
15788         memset(&owe_info, 0, sizeof(owe_info));
15789         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15790         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15791
15792         if (info->attrs[NL80211_ATTR_IE]) {
15793                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15794                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15795         }
15796
15797         return rdev_update_owe_info(rdev, dev, &owe_info);
15798 }
15799
15800 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15801 {
15802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15803         struct net_device *dev = info->user_ptr[1];
15804         struct wireless_dev *wdev = dev->ieee80211_ptr;
15805         struct station_info sinfo = {};
15806         const u8 *buf;
15807         size_t len;
15808         u8 *dest;
15809         int err;
15810
15811         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15812                 return -EOPNOTSUPP;
15813
15814         if (!info->attrs[NL80211_ATTR_MAC] ||
15815             !info->attrs[NL80211_ATTR_FRAME]) {
15816                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15817                 return -EINVAL;
15818         }
15819
15820         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15821                 return -EOPNOTSUPP;
15822
15823         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15824         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15825         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15826
15827         if (len < sizeof(struct ethhdr))
15828                 return -EINVAL;
15829
15830         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15831             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15832                 return -EINVAL;
15833
15834         err = rdev_get_station(rdev, dev, dest, &sinfo);
15835         if (err)
15836                 return err;
15837
15838         cfg80211_sinfo_release_content(&sinfo);
15839
15840         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15841 }
15842
15843 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15844                           struct nlattr *attrs[], struct net_device *dev,
15845                           struct cfg80211_tid_cfg *tid_conf,
15846                           struct genl_info *info, const u8 *peer,
15847                           unsigned int link_id)
15848 {
15849         struct netlink_ext_ack *extack = info->extack;
15850         u64 mask;
15851         int err;
15852
15853         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15854                 return -EINVAL;
15855
15856         tid_conf->config_override =
15857                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15858         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15859
15860         if (tid_conf->config_override) {
15861                 if (rdev->ops->reset_tid_config) {
15862                         err = rdev_reset_tid_config(rdev, dev, peer,
15863                                                     tid_conf->tids);
15864                         if (err)
15865                                 return err;
15866                 } else {
15867                         return -EINVAL;
15868                 }
15869         }
15870
15871         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15872                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15873                 tid_conf->noack =
15874                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15875         }
15876
15877         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15878                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15879                 tid_conf->retry_short =
15880                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15881
15882                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15883                         return -EINVAL;
15884         }
15885
15886         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15887                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15888                 tid_conf->retry_long =
15889                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15890
15891                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15892                         return -EINVAL;
15893         }
15894
15895         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15896                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15897                 tid_conf->ampdu =
15898                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15899         }
15900
15901         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15902                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15903                 tid_conf->rtscts =
15904                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15905         }
15906
15907         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15908                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15909                 tid_conf->amsdu =
15910                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15911         }
15912
15913         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15914                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15915
15916                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15917
15918                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15919                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15920                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15921                                                     &tid_conf->txrate_mask, dev,
15922                                                     true, link_id);
15923                         if (err)
15924                                 return err;
15925
15926                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15927                 }
15928                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15929         }
15930
15931         if (peer)
15932                 mask = rdev->wiphy.tid_config_support.peer;
15933         else
15934                 mask = rdev->wiphy.tid_config_support.vif;
15935
15936         if (tid_conf->mask & ~mask) {
15937                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15938                 return -EOPNOTSUPP;
15939         }
15940
15941         return 0;
15942 }
15943
15944 static int nl80211_set_tid_config(struct sk_buff *skb,
15945                                   struct genl_info *info)
15946 {
15947         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15948         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15949         unsigned int link_id = nl80211_link_id(info->attrs);
15950         struct net_device *dev = info->user_ptr[1];
15951         struct cfg80211_tid_config *tid_config;
15952         struct nlattr *tid;
15953         int conf_idx = 0, rem_conf;
15954         int ret = -EINVAL;
15955         u32 num_conf = 0;
15956
15957         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15958                 return -EINVAL;
15959
15960         if (!rdev->ops->set_tid_config)
15961                 return -EOPNOTSUPP;
15962
15963         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15964                             rem_conf)
15965                 num_conf++;
15966
15967         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15968                              GFP_KERNEL);
15969         if (!tid_config)
15970                 return -ENOMEM;
15971
15972         tid_config->n_tid_conf = num_conf;
15973
15974         if (info->attrs[NL80211_ATTR_MAC])
15975                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15976
15977         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15978                             rem_conf) {
15979                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15980                                        tid, NULL, NULL);
15981
15982                 if (ret)
15983                         goto bad_tid_conf;
15984
15985                 ret = parse_tid_conf(rdev, attrs, dev,
15986                                      &tid_config->tid_conf[conf_idx],
15987                                      info, tid_config->peer, link_id);
15988                 if (ret)
15989                         goto bad_tid_conf;
15990
15991                 conf_idx++;
15992         }
15993
15994         ret = rdev_set_tid_config(rdev, dev, tid_config);
15995
15996 bad_tid_conf:
15997         kfree(tid_config);
15998         return ret;
15999 }
16000
16001 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
16002 {
16003         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16004         struct cfg80211_color_change_settings params = {};
16005         struct net_device *dev = info->user_ptr[1];
16006         struct wireless_dev *wdev = dev->ieee80211_ptr;
16007         struct nlattr **tb;
16008         u16 offset;
16009         int err;
16010
16011         if (!rdev->ops->color_change)
16012                 return -EOPNOTSUPP;
16013
16014         if (!wiphy_ext_feature_isset(&rdev->wiphy,
16015                                      NL80211_EXT_FEATURE_BSS_COLOR))
16016                 return -EOPNOTSUPP;
16017
16018         if (wdev->iftype != NL80211_IFTYPE_AP)
16019                 return -EOPNOTSUPP;
16020
16021         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
16022             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
16023             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
16024                 return -EINVAL;
16025
16026         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
16027         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
16028
16029         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next,
16030                                    info->extack);
16031         if (err)
16032                 return err;
16033
16034         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
16035         if (!tb)
16036                 return -ENOMEM;
16037
16038         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
16039                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
16040                                nl80211_policy, info->extack);
16041         if (err)
16042                 goto out;
16043
16044         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change,
16045                                    info->extack);
16046         if (err)
16047                 goto out;
16048
16049         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
16050                 err = -EINVAL;
16051                 goto out;
16052         }
16053
16054         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
16055                 err = -EINVAL;
16056                 goto out;
16057         }
16058
16059         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
16060         if (offset >= params.beacon_color_change.tail_len) {
16061                 err = -EINVAL;
16062                 goto out;
16063         }
16064
16065         if (params.beacon_color_change.tail[offset] != params.count) {
16066                 err = -EINVAL;
16067                 goto out;
16068         }
16069
16070         params.counter_offset_beacon = offset;
16071
16072         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
16073                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
16074                     sizeof(u16)) {
16075                         err = -EINVAL;
16076                         goto out;
16077                 }
16078
16079                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
16080                 if (offset >= params.beacon_color_change.probe_resp_len) {
16081                         err = -EINVAL;
16082                         goto out;
16083                 }
16084
16085                 if (params.beacon_color_change.probe_resp[offset] !=
16086                     params.count) {
16087                         err = -EINVAL;
16088                         goto out;
16089                 }
16090
16091                 params.counter_offset_presp = offset;
16092         }
16093
16094         err = rdev_color_change(rdev, dev, &params);
16095
16096 out:
16097         kfree(params.beacon_next.mbssid_ies);
16098         kfree(params.beacon_color_change.mbssid_ies);
16099         kfree(params.beacon_next.rnr_ies);
16100         kfree(params.beacon_color_change.rnr_ies);
16101         kfree(tb);
16102         return err;
16103 }
16104
16105 static int nl80211_set_fils_aad(struct sk_buff *skb,
16106                                 struct genl_info *info)
16107 {
16108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16109         struct net_device *dev = info->user_ptr[1];
16110         struct cfg80211_fils_aad fils_aad = {};
16111         u8 *nonces;
16112
16113         if (!info->attrs[NL80211_ATTR_MAC] ||
16114             !info->attrs[NL80211_ATTR_FILS_KEK] ||
16115             !info->attrs[NL80211_ATTR_FILS_NONCES])
16116                 return -EINVAL;
16117
16118         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16119         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
16120         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
16121         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
16122         fils_aad.snonce = nonces;
16123         fils_aad.anonce = nonces + FILS_NONCE_LEN;
16124
16125         return rdev_set_fils_aad(rdev, dev, &fils_aad);
16126 }
16127
16128 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
16129 {
16130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16131         unsigned int link_id = nl80211_link_id(info->attrs);
16132         struct net_device *dev = info->user_ptr[1];
16133         struct wireless_dev *wdev = dev->ieee80211_ptr;
16134         int ret;
16135
16136         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
16137                 return -EINVAL;
16138
16139         switch (wdev->iftype) {
16140         case NL80211_IFTYPE_AP:
16141                 break;
16142         default:
16143                 return -EINVAL;
16144         }
16145
16146         if (!info->attrs[NL80211_ATTR_MAC] ||
16147             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
16148                 return -EINVAL;
16149
16150         wdev->valid_links |= BIT(link_id);
16151         ether_addr_copy(wdev->links[link_id].addr,
16152                         nla_data(info->attrs[NL80211_ATTR_MAC]));
16153
16154         ret = rdev_add_intf_link(rdev, wdev, link_id);
16155         if (ret) {
16156                 wdev->valid_links &= ~BIT(link_id);
16157                 eth_zero_addr(wdev->links[link_id].addr);
16158         }
16159
16160         return ret;
16161 }
16162
16163 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
16164 {
16165         unsigned int link_id = nl80211_link_id(info->attrs);
16166         struct net_device *dev = info->user_ptr[1];
16167         struct wireless_dev *wdev = dev->ieee80211_ptr;
16168
16169         /* cannot remove if there's no link */
16170         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16171                 return -EINVAL;
16172
16173         switch (wdev->iftype) {
16174         case NL80211_IFTYPE_AP:
16175                 break;
16176         default:
16177                 return -EINVAL;
16178         }
16179
16180         cfg80211_remove_link(wdev, link_id);
16181
16182         return 0;
16183 }
16184
16185 static int
16186 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
16187                              bool add)
16188 {
16189         struct link_station_parameters params = {};
16190         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16191         struct net_device *dev = info->user_ptr[1];
16192         int err;
16193
16194         if ((add && !rdev->ops->add_link_station) ||
16195             (!add && !rdev->ops->mod_link_station))
16196                 return -EOPNOTSUPP;
16197
16198         if (add && !info->attrs[NL80211_ATTR_MAC])
16199                 return -EINVAL;
16200
16201         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
16202                 return -EINVAL;
16203
16204         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
16205                 return -EINVAL;
16206
16207         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16208
16209         if (info->attrs[NL80211_ATTR_MAC]) {
16210                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
16211                 if (!is_valid_ether_addr(params.link_mac))
16212                         return -EINVAL;
16213         }
16214
16215         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
16216                 return -EINVAL;
16217
16218         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16219
16220         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
16221                 params.supported_rates =
16222                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16223                 params.supported_rates_len =
16224                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
16225         }
16226
16227         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
16228                 params.ht_capa =
16229                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
16230
16231         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
16232                 params.vht_capa =
16233                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
16234
16235         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
16236                 params.he_capa =
16237                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16238                 params.he_capa_len =
16239                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
16240
16241                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
16242                         params.eht_capa =
16243                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16244                         params.eht_capa_len =
16245                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
16246
16247                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
16248                                                         (const u8 *)params.eht_capa,
16249                                                         params.eht_capa_len,
16250                                                         false))
16251                                 return -EINVAL;
16252                 }
16253         }
16254
16255         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
16256                 params.he_6ghz_capa =
16257                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
16258
16259         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
16260                 params.opmode_notif_used = true;
16261                 params.opmode_notif =
16262                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16263         }
16264
16265         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16266                                                 &params.txpwr_set);
16267         if (err)
16268                 return err;
16269
16270         if (add)
16271                 return rdev_add_link_station(rdev, dev, &params);
16272
16273         return rdev_mod_link_station(rdev, dev, &params);
16274 }
16275
16276 static int
16277 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16278 {
16279         return nl80211_add_mod_link_station(skb, info, true);
16280 }
16281
16282 static int
16283 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16284 {
16285         return nl80211_add_mod_link_station(skb, info, false);
16286 }
16287
16288 static int
16289 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16290 {
16291         struct link_station_del_parameters params = {};
16292         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16293         struct net_device *dev = info->user_ptr[1];
16294
16295         if (!rdev->ops->del_link_station)
16296                 return -EOPNOTSUPP;
16297
16298         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16299             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16300                 return -EINVAL;
16301
16302         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16303         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16304
16305         return rdev_del_link_station(rdev, dev, &params);
16306 }
16307
16308 static int nl80211_set_hw_timestamp(struct sk_buff *skb,
16309                                     struct genl_info *info)
16310 {
16311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16312         struct net_device *dev = info->user_ptr[1];
16313         struct cfg80211_set_hw_timestamp hwts = {};
16314
16315         if (!rdev->wiphy.hw_timestamp_max_peers)
16316                 return -EOPNOTSUPP;
16317
16318         if (!info->attrs[NL80211_ATTR_MAC] &&
16319             rdev->wiphy.hw_timestamp_max_peers != CFG80211_HW_TIMESTAMP_ALL_PEERS)
16320                 return -EOPNOTSUPP;
16321
16322         if (info->attrs[NL80211_ATTR_MAC])
16323                 hwts.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
16324
16325         hwts.enable =
16326                 nla_get_flag(info->attrs[NL80211_ATTR_HW_TIMESTAMP_ENABLED]);
16327
16328         return rdev_set_hw_timestamp(rdev, dev, &hwts);
16329 }
16330
16331 static int
16332 nl80211_set_ttlm(struct sk_buff *skb, struct genl_info *info)
16333 {
16334         struct cfg80211_ttlm_params params = {};
16335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16336         struct net_device *dev = info->user_ptr[1];
16337         struct wireless_dev *wdev = dev->ieee80211_ptr;
16338
16339         if (wdev->iftype != NL80211_IFTYPE_STATION &&
16340             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
16341                 return -EOPNOTSUPP;
16342
16343         if (!wdev->connected)
16344                 return -ENOLINK;
16345
16346         if (!info->attrs[NL80211_ATTR_MLO_TTLM_DLINK] ||
16347             !info->attrs[NL80211_ATTR_MLO_TTLM_ULINK])
16348                 return -EINVAL;
16349
16350         nla_memcpy(params.dlink,
16351                    info->attrs[NL80211_ATTR_MLO_TTLM_DLINK],
16352                    sizeof(params.dlink));
16353         nla_memcpy(params.ulink,
16354                    info->attrs[NL80211_ATTR_MLO_TTLM_ULINK],
16355                    sizeof(params.ulink));
16356
16357         return rdev_set_ttlm(rdev, dev, &params);
16358 }
16359
16360 #define NL80211_FLAG_NEED_WIPHY         0x01
16361 #define NL80211_FLAG_NEED_NETDEV        0x02
16362 #define NL80211_FLAG_NEED_RTNL          0x04
16363 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16364 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16365                                          NL80211_FLAG_CHECK_NETDEV_UP)
16366 #define NL80211_FLAG_NEED_WDEV          0x10
16367 /* If a netdev is associated, it must be UP, P2P must be started */
16368 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16369                                          NL80211_FLAG_CHECK_NETDEV_UP)
16370 #define NL80211_FLAG_CLEAR_SKB          0x20
16371 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16372 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16373 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16374
16375 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16376         SELECTOR(__sel, NONE, 0) /* must be first */    \
16377         SELECTOR(__sel, WIPHY,                          \
16378                  NL80211_FLAG_NEED_WIPHY)               \
16379         SELECTOR(__sel, WDEV,                           \
16380                  NL80211_FLAG_NEED_WDEV)                \
16381         SELECTOR(__sel, NETDEV,                         \
16382                  NL80211_FLAG_NEED_NETDEV)              \
16383         SELECTOR(__sel, NETDEV_LINK,                    \
16384                  NL80211_FLAG_NEED_NETDEV |             \
16385                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16386         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16387                  NL80211_FLAG_NEED_NETDEV |             \
16388                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16389         SELECTOR(__sel, WIPHY_RTNL,                     \
16390                  NL80211_FLAG_NEED_WIPHY |              \
16391                  NL80211_FLAG_NEED_RTNL)                \
16392         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16393                  NL80211_FLAG_NEED_WIPHY |              \
16394                  NL80211_FLAG_NEED_RTNL |               \
16395                  NL80211_FLAG_NO_WIPHY_MTX)             \
16396         SELECTOR(__sel, WDEV_RTNL,                      \
16397                  NL80211_FLAG_NEED_WDEV |               \
16398                  NL80211_FLAG_NEED_RTNL)                \
16399         SELECTOR(__sel, NETDEV_RTNL,                    \
16400                  NL80211_FLAG_NEED_NETDEV |             \
16401                  NL80211_FLAG_NEED_RTNL)                \
16402         SELECTOR(__sel, NETDEV_UP,                      \
16403                  NL80211_FLAG_NEED_NETDEV_UP)           \
16404         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16405                  NL80211_FLAG_NEED_NETDEV_UP |          \
16406                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16407         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16408                  NL80211_FLAG_NEED_NETDEV_UP |          \
16409                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16410         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16411                  NL80211_FLAG_NEED_NETDEV_UP |          \
16412                  NL80211_FLAG_CLEAR_SKB |               \
16413                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16414         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16415                  NL80211_FLAG_NEED_NETDEV_UP |          \
16416                  NL80211_FLAG_NO_WIPHY_MTX)             \
16417         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16418                  NL80211_FLAG_NEED_NETDEV_UP |          \
16419                  NL80211_FLAG_NO_WIPHY_MTX |            \
16420                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16421         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16422                  NL80211_FLAG_NEED_NETDEV_UP |          \
16423                  NL80211_FLAG_CLEAR_SKB)                \
16424         SELECTOR(__sel, WDEV_UP,                        \
16425                  NL80211_FLAG_NEED_WDEV_UP)             \
16426         SELECTOR(__sel, WDEV_UP_LINK,                   \
16427                  NL80211_FLAG_NEED_WDEV_UP |            \
16428                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16429         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16430                  NL80211_FLAG_NEED_WDEV_UP |            \
16431                  NL80211_FLAG_NEED_RTNL)                \
16432         SELECTOR(__sel, WIPHY_CLEAR,                    \
16433                  NL80211_FLAG_NEED_WIPHY |              \
16434                  NL80211_FLAG_CLEAR_SKB)
16435
16436 enum nl80211_internal_flags_selector {
16437 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16438         INTERNAL_FLAG_SELECTORS(_)
16439 #undef SELECTOR
16440 };
16441
16442 static u32 nl80211_internal_flags[] = {
16443 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16444         INTERNAL_FLAG_SELECTORS(_)
16445 #undef SELECTOR
16446 };
16447
16448 static int nl80211_pre_doit(const struct genl_split_ops *ops,
16449                             struct sk_buff *skb,
16450                             struct genl_info *info)
16451 {
16452         struct cfg80211_registered_device *rdev = NULL;
16453         struct wireless_dev *wdev = NULL;
16454         struct net_device *dev = NULL;
16455         u32 internal_flags;
16456         int err;
16457
16458         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16459                 return -EINVAL;
16460
16461         internal_flags = nl80211_internal_flags[ops->internal_flags];
16462
16463         rtnl_lock();
16464         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16465                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16466                 if (IS_ERR(rdev)) {
16467                         err = PTR_ERR(rdev);
16468                         goto out_unlock;
16469                 }
16470                 info->user_ptr[0] = rdev;
16471         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16472                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16473                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16474                                                   info->attrs);
16475                 if (IS_ERR(wdev)) {
16476                         err = PTR_ERR(wdev);
16477                         goto out_unlock;
16478                 }
16479
16480                 dev = wdev->netdev;
16481                 dev_hold(dev);
16482                 rdev = wiphy_to_rdev(wdev->wiphy);
16483
16484                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16485                         if (!dev) {
16486                                 err = -EINVAL;
16487                                 goto out_unlock;
16488                         }
16489
16490                         info->user_ptr[1] = dev;
16491                 } else {
16492                         info->user_ptr[1] = wdev;
16493                 }
16494
16495                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16496                     !wdev_running(wdev)) {
16497                         err = -ENETDOWN;
16498                         goto out_unlock;
16499                 }
16500
16501                 info->user_ptr[0] = rdev;
16502         }
16503
16504         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16505                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16506
16507                 if (!wdev) {
16508                         err = -EINVAL;
16509                         goto out_unlock;
16510                 }
16511
16512                 /* MLO -> require valid link ID */
16513                 if (wdev->valid_links &&
16514                     (!link_id ||
16515                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16516                         err = -EINVAL;
16517                         goto out_unlock;
16518                 }
16519
16520                 /* non-MLO -> no link ID attribute accepted */
16521                 if (!wdev->valid_links && link_id) {
16522                         err = -EINVAL;
16523                         goto out_unlock;
16524                 }
16525         }
16526
16527         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16528                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16529                     (wdev && wdev->valid_links)) {
16530                         err = -EINVAL;
16531                         goto out_unlock;
16532                 }
16533         }
16534
16535         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16536                 wiphy_lock(&rdev->wiphy);
16537                 /* we keep the mutex locked until post_doit */
16538                 __release(&rdev->wiphy.mtx);
16539         }
16540         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16541                 rtnl_unlock();
16542
16543         return 0;
16544 out_unlock:
16545         rtnl_unlock();
16546         dev_put(dev);
16547         return err;
16548 }
16549
16550 static void nl80211_post_doit(const struct genl_split_ops *ops,
16551                               struct sk_buff *skb,
16552                               struct genl_info *info)
16553 {
16554         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16555
16556         if (info->user_ptr[1]) {
16557                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16558                         struct wireless_dev *wdev = info->user_ptr[1];
16559
16560                         dev_put(wdev->netdev);
16561                 } else {
16562                         dev_put(info->user_ptr[1]);
16563                 }
16564         }
16565
16566         if (info->user_ptr[0] &&
16567             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16568                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16569
16570                 /* we kept the mutex locked since pre_doit */
16571                 __acquire(&rdev->wiphy.mtx);
16572                 wiphy_unlock(&rdev->wiphy);
16573         }
16574
16575         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16576                 rtnl_unlock();
16577
16578         /* If needed, clear the netlink message payload from the SKB
16579          * as it might contain key data that shouldn't stick around on
16580          * the heap after the SKB is freed. The netlink message header
16581          * is still needed for further processing, so leave it intact.
16582          */
16583         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16584                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16585
16586                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16587         }
16588 }
16589
16590 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16591                                      struct cfg80211_sar_specs *sar_specs,
16592                                      struct nlattr *spec[], int index)
16593 {
16594         u32 range_index, i;
16595
16596         if (!sar_specs || !spec)
16597                 return -EINVAL;
16598
16599         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16600             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16601                 return -EINVAL;
16602
16603         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16604
16605         /* check if range_index exceeds num_freq_ranges */
16606         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16607                 return -EINVAL;
16608
16609         /* check if range_index duplicates */
16610         for (i = 0; i < index; i++) {
16611                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16612                         return -EINVAL;
16613         }
16614
16615         sar_specs->sub_specs[index].power =
16616                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16617
16618         sar_specs->sub_specs[index].freq_range_index = range_index;
16619
16620         return 0;
16621 }
16622
16623 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16624 {
16625         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16626         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16627         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16628         struct cfg80211_sar_specs *sar_spec;
16629         enum nl80211_sar_type type;
16630         struct nlattr *spec_list;
16631         u32 specs;
16632         int rem, err;
16633
16634         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16635                 return -EOPNOTSUPP;
16636
16637         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16638                 return -EINVAL;
16639
16640         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16641                          info->attrs[NL80211_ATTR_SAR_SPEC],
16642                          NULL, NULL);
16643
16644         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16645                 return -EINVAL;
16646
16647         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16648         if (type != rdev->wiphy.sar_capa->type)
16649                 return -EINVAL;
16650
16651         specs = 0;
16652         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16653                 specs++;
16654
16655         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16656                 return -EINVAL;
16657
16658         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16659         if (!sar_spec)
16660                 return -ENOMEM;
16661
16662         sar_spec->type = type;
16663         specs = 0;
16664         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16665                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16666                                  spec_list, NULL, NULL);
16667
16668                 switch (type) {
16669                 case NL80211_SAR_TYPE_POWER:
16670                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16671                                                       spec, specs)) {
16672                                 err = -EINVAL;
16673                                 goto error;
16674                         }
16675                         break;
16676                 default:
16677                         err = -EINVAL;
16678                         goto error;
16679                 }
16680                 specs++;
16681         }
16682
16683         sar_spec->num_sub_specs = specs;
16684
16685         rdev->cur_cmd_info = info;
16686         err = rdev_set_sar_specs(rdev, sar_spec);
16687         rdev->cur_cmd_info = NULL;
16688 error:
16689         kfree(sar_spec);
16690         return err;
16691 }
16692
16693 #define SELECTOR(__sel, name, value) \
16694         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16695 int __missing_selector(void);
16696 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16697
16698 static const struct genl_ops nl80211_ops[] = {
16699         {
16700                 .cmd = NL80211_CMD_GET_WIPHY,
16701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16702                 .doit = nl80211_get_wiphy,
16703                 .dumpit = nl80211_dump_wiphy,
16704                 .done = nl80211_dump_wiphy_done,
16705                 /* can be retrieved by unprivileged users */
16706                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16707         },
16708 };
16709
16710 static const struct genl_small_ops nl80211_small_ops[] = {
16711         {
16712                 .cmd = NL80211_CMD_SET_WIPHY,
16713                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16714                 .doit = nl80211_set_wiphy,
16715                 .flags = GENL_UNS_ADMIN_PERM,
16716         },
16717         {
16718                 .cmd = NL80211_CMD_GET_INTERFACE,
16719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16720                 .doit = nl80211_get_interface,
16721                 .dumpit = nl80211_dump_interface,
16722                 /* can be retrieved by unprivileged users */
16723                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16724         },
16725         {
16726                 .cmd = NL80211_CMD_SET_INTERFACE,
16727                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16728                 .doit = nl80211_set_interface,
16729                 .flags = GENL_UNS_ADMIN_PERM,
16730                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16731                                          NL80211_FLAG_NEED_RTNL),
16732         },
16733         {
16734                 .cmd = NL80211_CMD_NEW_INTERFACE,
16735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16736                 .doit = nl80211_new_interface,
16737                 .flags = GENL_UNS_ADMIN_PERM,
16738                 .internal_flags =
16739                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16740                                NL80211_FLAG_NEED_RTNL |
16741                                /* we take the wiphy mutex later ourselves */
16742                                NL80211_FLAG_NO_WIPHY_MTX),
16743         },
16744         {
16745                 .cmd = NL80211_CMD_DEL_INTERFACE,
16746                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16747                 .doit = nl80211_del_interface,
16748                 .flags = GENL_UNS_ADMIN_PERM,
16749                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16750                                          NL80211_FLAG_NEED_RTNL),
16751         },
16752         {
16753                 .cmd = NL80211_CMD_GET_KEY,
16754                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16755                 .doit = nl80211_get_key,
16756                 .flags = GENL_UNS_ADMIN_PERM,
16757                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16758         },
16759         {
16760                 .cmd = NL80211_CMD_SET_KEY,
16761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16762                 .doit = nl80211_set_key,
16763                 .flags = GENL_UNS_ADMIN_PERM,
16764                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16765                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16766                                          NL80211_FLAG_CLEAR_SKB),
16767         },
16768         {
16769                 .cmd = NL80211_CMD_NEW_KEY,
16770                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16771                 .doit = nl80211_new_key,
16772                 .flags = GENL_UNS_ADMIN_PERM,
16773                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16774                                          NL80211_FLAG_CLEAR_SKB),
16775         },
16776         {
16777                 .cmd = NL80211_CMD_DEL_KEY,
16778                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16779                 .doit = nl80211_del_key,
16780                 .flags = GENL_UNS_ADMIN_PERM,
16781                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16782         },
16783         {
16784                 .cmd = NL80211_CMD_SET_BEACON,
16785                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16786                 .flags = GENL_UNS_ADMIN_PERM,
16787                 .doit = nl80211_set_beacon,
16788                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16789                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16790         },
16791         {
16792                 .cmd = NL80211_CMD_START_AP,
16793                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16794                 .flags = GENL_UNS_ADMIN_PERM,
16795                 .doit = nl80211_start_ap,
16796                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16797                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16798         },
16799         {
16800                 .cmd = NL80211_CMD_STOP_AP,
16801                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16802                 .flags = GENL_UNS_ADMIN_PERM,
16803                 .doit = nl80211_stop_ap,
16804                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16805                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16806         },
16807         {
16808                 .cmd = NL80211_CMD_GET_STATION,
16809                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16810                 .doit = nl80211_get_station,
16811                 .dumpit = nl80211_dump_station,
16812                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16813         },
16814         {
16815                 .cmd = NL80211_CMD_SET_STATION,
16816                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16817                 .doit = nl80211_set_station,
16818                 .flags = GENL_UNS_ADMIN_PERM,
16819                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16820         },
16821         {
16822                 .cmd = NL80211_CMD_NEW_STATION,
16823                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16824                 .doit = nl80211_new_station,
16825                 .flags = GENL_UNS_ADMIN_PERM,
16826                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16827         },
16828         {
16829                 .cmd = NL80211_CMD_DEL_STATION,
16830                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16831                 .doit = nl80211_del_station,
16832                 .flags = GENL_UNS_ADMIN_PERM,
16833                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16834         },
16835         {
16836                 .cmd = NL80211_CMD_GET_MPATH,
16837                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16838                 .doit = nl80211_get_mpath,
16839                 .dumpit = nl80211_dump_mpath,
16840                 .flags = GENL_UNS_ADMIN_PERM,
16841                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16842         },
16843         {
16844                 .cmd = NL80211_CMD_GET_MPP,
16845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16846                 .doit = nl80211_get_mpp,
16847                 .dumpit = nl80211_dump_mpp,
16848                 .flags = GENL_UNS_ADMIN_PERM,
16849                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16850         },
16851         {
16852                 .cmd = NL80211_CMD_SET_MPATH,
16853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16854                 .doit = nl80211_set_mpath,
16855                 .flags = GENL_UNS_ADMIN_PERM,
16856                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16857         },
16858         {
16859                 .cmd = NL80211_CMD_NEW_MPATH,
16860                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16861                 .doit = nl80211_new_mpath,
16862                 .flags = GENL_UNS_ADMIN_PERM,
16863                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16864         },
16865         {
16866                 .cmd = NL80211_CMD_DEL_MPATH,
16867                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16868                 .doit = nl80211_del_mpath,
16869                 .flags = GENL_UNS_ADMIN_PERM,
16870                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16871         },
16872         {
16873                 .cmd = NL80211_CMD_SET_BSS,
16874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16875                 .doit = nl80211_set_bss,
16876                 .flags = GENL_UNS_ADMIN_PERM,
16877                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16878                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16879         },
16880         {
16881                 .cmd = NL80211_CMD_GET_REG,
16882                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16883                 .doit = nl80211_get_reg_do,
16884                 .dumpit = nl80211_get_reg_dump,
16885                 /* can be retrieved by unprivileged users */
16886         },
16887 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16888         {
16889                 .cmd = NL80211_CMD_SET_REG,
16890                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16891                 .doit = nl80211_set_reg,
16892                 .flags = GENL_ADMIN_PERM,
16893         },
16894 #endif
16895         {
16896                 .cmd = NL80211_CMD_REQ_SET_REG,
16897                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16898                 .doit = nl80211_req_set_reg,
16899                 .flags = GENL_ADMIN_PERM,
16900         },
16901         {
16902                 .cmd = NL80211_CMD_RELOAD_REGDB,
16903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16904                 .doit = nl80211_reload_regdb,
16905                 .flags = GENL_ADMIN_PERM,
16906         },
16907         {
16908                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16909                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16910                 .doit = nl80211_get_mesh_config,
16911                 /* can be retrieved by unprivileged users */
16912                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16913         },
16914         {
16915                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16916                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16917                 .doit = nl80211_update_mesh_config,
16918                 .flags = GENL_UNS_ADMIN_PERM,
16919                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16920         },
16921         {
16922                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16923                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16924                 .doit = nl80211_trigger_scan,
16925                 .flags = GENL_UNS_ADMIN_PERM,
16926                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16927         },
16928         {
16929                 .cmd = NL80211_CMD_ABORT_SCAN,
16930                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16931                 .doit = nl80211_abort_scan,
16932                 .flags = GENL_UNS_ADMIN_PERM,
16933                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16934         },
16935         {
16936                 .cmd = NL80211_CMD_GET_SCAN,
16937                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16938                 .dumpit = nl80211_dump_scan,
16939         },
16940         {
16941                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16942                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16943                 .doit = nl80211_start_sched_scan,
16944                 .flags = GENL_UNS_ADMIN_PERM,
16945                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16946         },
16947         {
16948                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16949                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16950                 .doit = nl80211_stop_sched_scan,
16951                 .flags = GENL_UNS_ADMIN_PERM,
16952                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16953         },
16954         {
16955                 .cmd = NL80211_CMD_AUTHENTICATE,
16956                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16957                 .doit = nl80211_authenticate,
16958                 .flags = GENL_UNS_ADMIN_PERM,
16959                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16960                                          NL80211_FLAG_CLEAR_SKB),
16961         },
16962         {
16963                 .cmd = NL80211_CMD_ASSOCIATE,
16964                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16965                 .doit = nl80211_associate,
16966                 .flags = GENL_UNS_ADMIN_PERM,
16967                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16968                                          NL80211_FLAG_CLEAR_SKB),
16969         },
16970         {
16971                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16972                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16973                 .doit = nl80211_deauthenticate,
16974                 .flags = GENL_UNS_ADMIN_PERM,
16975                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16976         },
16977         {
16978                 .cmd = NL80211_CMD_DISASSOCIATE,
16979                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16980                 .doit = nl80211_disassociate,
16981                 .flags = GENL_UNS_ADMIN_PERM,
16982                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16983         },
16984         {
16985                 .cmd = NL80211_CMD_JOIN_IBSS,
16986                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16987                 .doit = nl80211_join_ibss,
16988                 .flags = GENL_UNS_ADMIN_PERM,
16989                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16990         },
16991         {
16992                 .cmd = NL80211_CMD_LEAVE_IBSS,
16993                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16994                 .doit = nl80211_leave_ibss,
16995                 .flags = GENL_UNS_ADMIN_PERM,
16996                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16997         },
16998 #ifdef CONFIG_NL80211_TESTMODE
16999         {
17000                 .cmd = NL80211_CMD_TESTMODE,
17001                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17002                 .doit = nl80211_testmode_do,
17003                 .dumpit = nl80211_testmode_dump,
17004                 .flags = GENL_UNS_ADMIN_PERM,
17005                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17006         },
17007 #endif
17008         {
17009                 .cmd = NL80211_CMD_CONNECT,
17010                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17011                 .doit = nl80211_connect,
17012                 .flags = GENL_UNS_ADMIN_PERM,
17013                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17014                                          NL80211_FLAG_CLEAR_SKB),
17015         },
17016         {
17017                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
17018                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17019                 .doit = nl80211_update_connect_params,
17020                 .flags = GENL_ADMIN_PERM,
17021                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17022                                          NL80211_FLAG_CLEAR_SKB),
17023         },
17024         {
17025                 .cmd = NL80211_CMD_DISCONNECT,
17026                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17027                 .doit = nl80211_disconnect,
17028                 .flags = GENL_UNS_ADMIN_PERM,
17029                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17030         },
17031         {
17032                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
17033                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17034                 .doit = nl80211_wiphy_netns,
17035                 .flags = GENL_UNS_ADMIN_PERM,
17036                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17037                                          NL80211_FLAG_NEED_RTNL |
17038                                          NL80211_FLAG_NO_WIPHY_MTX),
17039         },
17040         {
17041                 .cmd = NL80211_CMD_GET_SURVEY,
17042                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17043                 .dumpit = nl80211_dump_survey,
17044         },
17045         {
17046                 .cmd = NL80211_CMD_SET_PMKSA,
17047                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17048                 .doit = nl80211_set_pmksa,
17049                 .flags = GENL_UNS_ADMIN_PERM,
17050                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17051                                          NL80211_FLAG_CLEAR_SKB),
17052         },
17053         {
17054                 .cmd = NL80211_CMD_DEL_PMKSA,
17055                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17056                 .doit = nl80211_del_pmksa,
17057                 .flags = GENL_UNS_ADMIN_PERM,
17058                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17059         },
17060         {
17061                 .cmd = NL80211_CMD_FLUSH_PMKSA,
17062                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17063                 .doit = nl80211_flush_pmksa,
17064                 .flags = GENL_UNS_ADMIN_PERM,
17065                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17066         },
17067         {
17068                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
17069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17070                 .doit = nl80211_remain_on_channel,
17071                 .flags = GENL_UNS_ADMIN_PERM,
17072                 /* FIXME: requiring a link ID here is probably not good */
17073                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17074                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17075         },
17076         {
17077                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
17078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17079                 .doit = nl80211_cancel_remain_on_channel,
17080                 .flags = GENL_UNS_ADMIN_PERM,
17081                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17082         },
17083         {
17084                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
17085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17086                 .doit = nl80211_set_tx_bitrate_mask,
17087                 .flags = GENL_UNS_ADMIN_PERM,
17088                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17089                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17090         },
17091         {
17092                 .cmd = NL80211_CMD_REGISTER_FRAME,
17093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17094                 .doit = nl80211_register_mgmt,
17095                 .flags = GENL_UNS_ADMIN_PERM,
17096                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
17097         },
17098         {
17099                 .cmd = NL80211_CMD_FRAME,
17100                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17101                 .doit = nl80211_tx_mgmt,
17102                 .flags = GENL_UNS_ADMIN_PERM,
17103                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17104         },
17105         {
17106                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
17107                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17108                 .doit = nl80211_tx_mgmt_cancel_wait,
17109                 .flags = GENL_UNS_ADMIN_PERM,
17110                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17111         },
17112         {
17113                 .cmd = NL80211_CMD_SET_POWER_SAVE,
17114                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17115                 .doit = nl80211_set_power_save,
17116                 .flags = GENL_UNS_ADMIN_PERM,
17117                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17118         },
17119         {
17120                 .cmd = NL80211_CMD_GET_POWER_SAVE,
17121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17122                 .doit = nl80211_get_power_save,
17123                 /* can be retrieved by unprivileged users */
17124                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17125         },
17126         {
17127                 .cmd = NL80211_CMD_SET_CQM,
17128                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17129                 .doit = nl80211_set_cqm,
17130                 .flags = GENL_UNS_ADMIN_PERM,
17131                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17132         },
17133         {
17134                 .cmd = NL80211_CMD_SET_CHANNEL,
17135                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17136                 .doit = nl80211_set_channel,
17137                 .flags = GENL_UNS_ADMIN_PERM,
17138                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17139                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17140         },
17141         {
17142                 .cmd = NL80211_CMD_JOIN_MESH,
17143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17144                 .doit = nl80211_join_mesh,
17145                 .flags = GENL_UNS_ADMIN_PERM,
17146                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17147         },
17148         {
17149                 .cmd = NL80211_CMD_LEAVE_MESH,
17150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17151                 .doit = nl80211_leave_mesh,
17152                 .flags = GENL_UNS_ADMIN_PERM,
17153                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17154         },
17155         {
17156                 .cmd = NL80211_CMD_JOIN_OCB,
17157                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17158                 .doit = nl80211_join_ocb,
17159                 .flags = GENL_UNS_ADMIN_PERM,
17160                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17161         },
17162         {
17163                 .cmd = NL80211_CMD_LEAVE_OCB,
17164                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17165                 .doit = nl80211_leave_ocb,
17166                 .flags = GENL_UNS_ADMIN_PERM,
17167                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17168         },
17169 #ifdef CONFIG_PM
17170         {
17171                 .cmd = NL80211_CMD_GET_WOWLAN,
17172                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17173                 .doit = nl80211_get_wowlan,
17174                 /* can be retrieved by unprivileged users */
17175                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17176         },
17177         {
17178                 .cmd = NL80211_CMD_SET_WOWLAN,
17179                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17180                 .doit = nl80211_set_wowlan,
17181                 .flags = GENL_UNS_ADMIN_PERM,
17182                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17183         },
17184 #endif
17185         {
17186                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
17187                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17188                 .doit = nl80211_set_rekey_data,
17189                 .flags = GENL_UNS_ADMIN_PERM,
17190                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17191                                          NL80211_FLAG_CLEAR_SKB),
17192         },
17193         {
17194                 .cmd = NL80211_CMD_TDLS_MGMT,
17195                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17196                 .doit = nl80211_tdls_mgmt,
17197                 .flags = GENL_UNS_ADMIN_PERM,
17198                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17199                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17200         },
17201         {
17202                 .cmd = NL80211_CMD_TDLS_OPER,
17203                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17204                 .doit = nl80211_tdls_oper,
17205                 .flags = GENL_UNS_ADMIN_PERM,
17206                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17207         },
17208         {
17209                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
17210                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17211                 .doit = nl80211_register_unexpected_frame,
17212                 .flags = GENL_UNS_ADMIN_PERM,
17213                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17214         },
17215         {
17216                 .cmd = NL80211_CMD_PROBE_CLIENT,
17217                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17218                 .doit = nl80211_probe_client,
17219                 .flags = GENL_UNS_ADMIN_PERM,
17220                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17221         },
17222         {
17223                 .cmd = NL80211_CMD_REGISTER_BEACONS,
17224                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17225                 .doit = nl80211_register_beacons,
17226                 .flags = GENL_UNS_ADMIN_PERM,
17227                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17228         },
17229         {
17230                 .cmd = NL80211_CMD_SET_NOACK_MAP,
17231                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17232                 .doit = nl80211_set_noack_map,
17233                 .flags = GENL_UNS_ADMIN_PERM,
17234                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17235         },
17236         {
17237                 .cmd = NL80211_CMD_START_P2P_DEVICE,
17238                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17239                 .doit = nl80211_start_p2p_device,
17240                 .flags = GENL_UNS_ADMIN_PERM,
17241                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17242                                          NL80211_FLAG_NEED_RTNL),
17243         },
17244         {
17245                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
17246                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17247                 .doit = nl80211_stop_p2p_device,
17248                 .flags = GENL_UNS_ADMIN_PERM,
17249                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17250                                          NL80211_FLAG_NEED_RTNL),
17251         },
17252         {
17253                 .cmd = NL80211_CMD_START_NAN,
17254                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17255                 .doit = nl80211_start_nan,
17256                 .flags = GENL_ADMIN_PERM,
17257                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
17258                                          NL80211_FLAG_NEED_RTNL),
17259         },
17260         {
17261                 .cmd = NL80211_CMD_STOP_NAN,
17262                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17263                 .doit = nl80211_stop_nan,
17264                 .flags = GENL_ADMIN_PERM,
17265                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
17266                                          NL80211_FLAG_NEED_RTNL),
17267         },
17268         {
17269                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
17270                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17271                 .doit = nl80211_nan_add_func,
17272                 .flags = GENL_ADMIN_PERM,
17273                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17274         },
17275         {
17276                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
17277                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17278                 .doit = nl80211_nan_del_func,
17279                 .flags = GENL_ADMIN_PERM,
17280                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17281         },
17282         {
17283                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
17284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17285                 .doit = nl80211_nan_change_config,
17286                 .flags = GENL_ADMIN_PERM,
17287                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17288         },
17289         {
17290                 .cmd = NL80211_CMD_SET_MCAST_RATE,
17291                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17292                 .doit = nl80211_set_mcast_rate,
17293                 .flags = GENL_UNS_ADMIN_PERM,
17294                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17295         },
17296         {
17297                 .cmd = NL80211_CMD_SET_MAC_ACL,
17298                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17299                 .doit = nl80211_set_mac_acl,
17300                 .flags = GENL_UNS_ADMIN_PERM,
17301                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17302                                          NL80211_FLAG_MLO_UNSUPPORTED),
17303         },
17304         {
17305                 .cmd = NL80211_CMD_RADAR_DETECT,
17306                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17307                 .doit = nl80211_start_radar_detection,
17308                 .flags = GENL_UNS_ADMIN_PERM,
17309                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17310                                          NL80211_FLAG_NO_WIPHY_MTX |
17311                                          NL80211_FLAG_MLO_UNSUPPORTED),
17312         },
17313         {
17314                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17315                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17316                 .doit = nl80211_get_protocol_features,
17317         },
17318         {
17319                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17320                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17321                 .doit = nl80211_update_ft_ies,
17322                 .flags = GENL_UNS_ADMIN_PERM,
17323                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17324         },
17325         {
17326                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17327                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17328                 .doit = nl80211_crit_protocol_start,
17329                 .flags = GENL_UNS_ADMIN_PERM,
17330                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17331         },
17332         {
17333                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17334                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17335                 .doit = nl80211_crit_protocol_stop,
17336                 .flags = GENL_UNS_ADMIN_PERM,
17337                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17338         },
17339         {
17340                 .cmd = NL80211_CMD_GET_COALESCE,
17341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17342                 .doit = nl80211_get_coalesce,
17343                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17344         },
17345         {
17346                 .cmd = NL80211_CMD_SET_COALESCE,
17347                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17348                 .doit = nl80211_set_coalesce,
17349                 .flags = GENL_UNS_ADMIN_PERM,
17350                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17351         },
17352         {
17353                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17354                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17355                 .doit = nl80211_channel_switch,
17356                 .flags = GENL_UNS_ADMIN_PERM,
17357                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17358                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17359         },
17360         {
17361                 .cmd = NL80211_CMD_VENDOR,
17362                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17363                 .doit = nl80211_vendor_cmd,
17364                 .dumpit = nl80211_vendor_cmd_dump,
17365                 .flags = GENL_UNS_ADMIN_PERM,
17366                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17367                                          NL80211_FLAG_CLEAR_SKB),
17368         },
17369         {
17370                 .cmd = NL80211_CMD_SET_QOS_MAP,
17371                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17372                 .doit = nl80211_set_qos_map,
17373                 .flags = GENL_UNS_ADMIN_PERM,
17374                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17375         },
17376         {
17377                 .cmd = NL80211_CMD_ADD_TX_TS,
17378                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17379                 .doit = nl80211_add_tx_ts,
17380                 .flags = GENL_UNS_ADMIN_PERM,
17381                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17382                                          NL80211_FLAG_MLO_UNSUPPORTED),
17383         },
17384         {
17385                 .cmd = NL80211_CMD_DEL_TX_TS,
17386                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17387                 .doit = nl80211_del_tx_ts,
17388                 .flags = GENL_UNS_ADMIN_PERM,
17389                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17390         },
17391         {
17392                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17394                 .doit = nl80211_tdls_channel_switch,
17395                 .flags = GENL_UNS_ADMIN_PERM,
17396                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17397         },
17398         {
17399                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17401                 .doit = nl80211_tdls_cancel_channel_switch,
17402                 .flags = GENL_UNS_ADMIN_PERM,
17403                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17404         },
17405         {
17406                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17407                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17408                 .doit = nl80211_set_multicast_to_unicast,
17409                 .flags = GENL_UNS_ADMIN_PERM,
17410                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17411         },
17412         {
17413                 .cmd = NL80211_CMD_SET_PMK,
17414                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17415                 .doit = nl80211_set_pmk,
17416                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17417                                          NL80211_FLAG_CLEAR_SKB),
17418         },
17419         {
17420                 .cmd = NL80211_CMD_DEL_PMK,
17421                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17422                 .doit = nl80211_del_pmk,
17423                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17424         },
17425         {
17426                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17427                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17428                 .doit = nl80211_external_auth,
17429                 .flags = GENL_ADMIN_PERM,
17430                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17431         },
17432         {
17433                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17435                 .doit = nl80211_tx_control_port,
17436                 .flags = GENL_UNS_ADMIN_PERM,
17437                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17438         },
17439         {
17440                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17442                 .doit = nl80211_get_ftm_responder_stats,
17443                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17444                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17445         },
17446         {
17447                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17449                 .doit = nl80211_pmsr_start,
17450                 .flags = GENL_UNS_ADMIN_PERM,
17451                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17452         },
17453         {
17454                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17456                 .doit = nl80211_notify_radar_detection,
17457                 .flags = GENL_UNS_ADMIN_PERM,
17458                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17459         },
17460         {
17461                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17462                 .doit = nl80211_update_owe_info,
17463                 .flags = GENL_ADMIN_PERM,
17464                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17465         },
17466         {
17467                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17468                 .doit = nl80211_probe_mesh_link,
17469                 .flags = GENL_UNS_ADMIN_PERM,
17470                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17471         },
17472         {
17473                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17474                 .doit = nl80211_set_tid_config,
17475                 .flags = GENL_UNS_ADMIN_PERM,
17476                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17477                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17478         },
17479         {
17480                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17481                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17482                 .doit = nl80211_set_sar_specs,
17483                 .flags = GENL_UNS_ADMIN_PERM,
17484                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17485                                          NL80211_FLAG_NEED_RTNL),
17486         },
17487         {
17488                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17489                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17490                 .doit = nl80211_color_change,
17491                 .flags = GENL_UNS_ADMIN_PERM,
17492                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17493         },
17494         {
17495                 .cmd = NL80211_CMD_SET_FILS_AAD,
17496                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17497                 .doit = nl80211_set_fils_aad,
17498                 .flags = GENL_UNS_ADMIN_PERM,
17499                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17500         },
17501         {
17502                 .cmd = NL80211_CMD_ADD_LINK,
17503                 .doit = nl80211_add_link,
17504                 .flags = GENL_UNS_ADMIN_PERM,
17505                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17506         },
17507         {
17508                 .cmd = NL80211_CMD_REMOVE_LINK,
17509                 .doit = nl80211_remove_link,
17510                 .flags = GENL_UNS_ADMIN_PERM,
17511                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17512                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17513         },
17514         {
17515                 .cmd = NL80211_CMD_ADD_LINK_STA,
17516                 .doit = nl80211_add_link_station,
17517                 .flags = GENL_UNS_ADMIN_PERM,
17518                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17519                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17520         },
17521         {
17522                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17523                 .doit = nl80211_modify_link_station,
17524                 .flags = GENL_UNS_ADMIN_PERM,
17525                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17526                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17527         },
17528         {
17529                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17530                 .doit = nl80211_remove_link_station,
17531                 .flags = GENL_UNS_ADMIN_PERM,
17532                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17533                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17534         },
17535         {
17536                 .cmd = NL80211_CMD_SET_HW_TIMESTAMP,
17537                 .doit = nl80211_set_hw_timestamp,
17538                 .flags = GENL_UNS_ADMIN_PERM,
17539                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17540         },
17541         {
17542                 .cmd = NL80211_CMD_SET_TID_TO_LINK_MAPPING,
17543                 .doit = nl80211_set_ttlm,
17544                 .flags = GENL_UNS_ADMIN_PERM,
17545                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17546         },
17547 };
17548
17549 static struct genl_family nl80211_fam __ro_after_init = {
17550         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17551         .hdrsize = 0,                   /* no private header */
17552         .version = 1,                   /* no particular meaning now */
17553         .maxattr = NL80211_ATTR_MAX,
17554         .policy = nl80211_policy,
17555         .netnsok = true,
17556         .pre_doit = nl80211_pre_doit,
17557         .post_doit = nl80211_post_doit,
17558         .module = THIS_MODULE,
17559         .ops = nl80211_ops,
17560         .n_ops = ARRAY_SIZE(nl80211_ops),
17561         .small_ops = nl80211_small_ops,
17562         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17563         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17564         .mcgrps = nl80211_mcgrps,
17565         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17566         .parallel_ops = true,
17567 };
17568
17569 /* notification functions */
17570
17571 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17572                           enum nl80211_commands cmd)
17573 {
17574         struct sk_buff *msg;
17575         struct nl80211_dump_wiphy_state state = {};
17576
17577         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17578                 cmd != NL80211_CMD_DEL_WIPHY);
17579
17580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17581         if (!msg)
17582                 return;
17583
17584         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17585                 nlmsg_free(msg);
17586                 return;
17587         }
17588
17589         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17590                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17591 }
17592
17593 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17594                                 struct wireless_dev *wdev,
17595                                 enum nl80211_commands cmd)
17596 {
17597         struct sk_buff *msg;
17598
17599         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17600         if (!msg)
17601                 return;
17602
17603         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17604                 nlmsg_free(msg);
17605                 return;
17606         }
17607
17608         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17609                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17610 }
17611
17612 static int nl80211_add_scan_req(struct sk_buff *msg,
17613                                 struct cfg80211_registered_device *rdev)
17614 {
17615         struct cfg80211_scan_request *req = rdev->scan_req;
17616         struct nlattr *nest;
17617         int i;
17618         struct cfg80211_scan_info *info;
17619
17620         if (WARN_ON(!req))
17621                 return 0;
17622
17623         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17624         if (!nest)
17625                 goto nla_put_failure;
17626         for (i = 0; i < req->n_ssids; i++) {
17627                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17628                         goto nla_put_failure;
17629         }
17630         nla_nest_end(msg, nest);
17631
17632         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17633                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17634                 if (!nest)
17635                         goto nla_put_failure;
17636                 for (i = 0; i < req->n_channels; i++) {
17637                         if (nla_put_u32(msg, i,
17638                                    ieee80211_channel_to_khz(req->channels[i])))
17639                                 goto nla_put_failure;
17640                 }
17641                 nla_nest_end(msg, nest);
17642         } else {
17643                 nest = nla_nest_start_noflag(msg,
17644                                              NL80211_ATTR_SCAN_FREQUENCIES);
17645                 if (!nest)
17646                         goto nla_put_failure;
17647                 for (i = 0; i < req->n_channels; i++) {
17648                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17649                                 goto nla_put_failure;
17650                 }
17651                 nla_nest_end(msg, nest);
17652         }
17653
17654         if (req->ie &&
17655             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17656                 goto nla_put_failure;
17657
17658         if (req->flags &&
17659             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17660                 goto nla_put_failure;
17661
17662         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17663                 &rdev->scan_req->info;
17664         if (info->scan_start_tsf &&
17665             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17666                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17667              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17668                      info->tsf_bssid)))
17669                 goto nla_put_failure;
17670
17671         return 0;
17672  nla_put_failure:
17673         return -ENOBUFS;
17674 }
17675
17676 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17677                                  struct cfg80211_registered_device *rdev,
17678                                  struct wireless_dev *wdev,
17679                                  u32 portid, u32 seq, int flags,
17680                                  u32 cmd)
17681 {
17682         void *hdr;
17683
17684         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17685         if (!hdr)
17686                 return -1;
17687
17688         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17689             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17690                                          wdev->netdev->ifindex)) ||
17691             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17692                               NL80211_ATTR_PAD))
17693                 goto nla_put_failure;
17694
17695         /* ignore errors and send incomplete event anyway */
17696         nl80211_add_scan_req(msg, rdev);
17697
17698         genlmsg_end(msg, hdr);
17699         return 0;
17700
17701  nla_put_failure:
17702         genlmsg_cancel(msg, hdr);
17703         return -EMSGSIZE;
17704 }
17705
17706 static int
17707 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17708                             struct cfg80211_sched_scan_request *req, u32 cmd)
17709 {
17710         void *hdr;
17711
17712         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17713         if (!hdr)
17714                 return -1;
17715
17716         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17717                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17718             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17719             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17720                               NL80211_ATTR_PAD))
17721                 goto nla_put_failure;
17722
17723         genlmsg_end(msg, hdr);
17724         return 0;
17725
17726  nla_put_failure:
17727         genlmsg_cancel(msg, hdr);
17728         return -EMSGSIZE;
17729 }
17730
17731 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17732                              struct wireless_dev *wdev)
17733 {
17734         struct sk_buff *msg;
17735
17736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17737         if (!msg)
17738                 return;
17739
17740         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17741                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17742                 nlmsg_free(msg);
17743                 return;
17744         }
17745
17746         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17747                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17748 }
17749
17750 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17751                                        struct wireless_dev *wdev, bool aborted)
17752 {
17753         struct sk_buff *msg;
17754
17755         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17756         if (!msg)
17757                 return NULL;
17758
17759         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17760                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17761                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17762                 nlmsg_free(msg);
17763                 return NULL;
17764         }
17765
17766         return msg;
17767 }
17768
17769 /* send message created by nl80211_build_scan_msg() */
17770 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17771                            struct sk_buff *msg)
17772 {
17773         if (!msg)
17774                 return;
17775
17776         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17777                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17778 }
17779
17780 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17781 {
17782         struct sk_buff *msg;
17783
17784         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17785         if (!msg)
17786                 return;
17787
17788         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17789                 nlmsg_free(msg);
17790                 return;
17791         }
17792
17793         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17794                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17795 }
17796
17797 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17798                                           struct regulatory_request *request)
17799 {
17800         /* Userspace can always count this one always being set */
17801         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17802                 goto nla_put_failure;
17803
17804         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17805                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17806                                NL80211_REGDOM_TYPE_WORLD))
17807                         goto nla_put_failure;
17808         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17809                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17810                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17811                         goto nla_put_failure;
17812         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17813                    request->intersect) {
17814                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17815                                NL80211_REGDOM_TYPE_INTERSECTION))
17816                         goto nla_put_failure;
17817         } else {
17818                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17819                                NL80211_REGDOM_TYPE_COUNTRY) ||
17820                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17821                                    request->alpha2))
17822                         goto nla_put_failure;
17823         }
17824
17825         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17826                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17827
17828                 if (wiphy &&
17829                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17830                         goto nla_put_failure;
17831
17832                 if (wiphy &&
17833                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17834                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17835                         goto nla_put_failure;
17836         }
17837
17838         return true;
17839
17840 nla_put_failure:
17841         return false;
17842 }
17843
17844 /*
17845  * This can happen on global regulatory changes or device specific settings
17846  * based on custom regulatory domains.
17847  */
17848 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17849                                      struct regulatory_request *request)
17850 {
17851         struct sk_buff *msg;
17852         void *hdr;
17853
17854         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17855         if (!msg)
17856                 return;
17857
17858         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17859         if (!hdr)
17860                 goto nla_put_failure;
17861
17862         if (!nl80211_reg_change_event_fill(msg, request))
17863                 goto nla_put_failure;
17864
17865         genlmsg_end(msg, hdr);
17866
17867         rcu_read_lock();
17868         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17869                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17870         rcu_read_unlock();
17871
17872         return;
17873
17874 nla_put_failure:
17875         nlmsg_free(msg);
17876 }
17877
17878 struct nl80211_mlme_event {
17879         enum nl80211_commands cmd;
17880         const u8 *buf;
17881         size_t buf_len;
17882         int uapsd_queues;
17883         const u8 *req_ies;
17884         size_t req_ies_len;
17885         bool reconnect;
17886 };
17887
17888 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17889                                     struct net_device *netdev,
17890                                     const struct nl80211_mlme_event *event,
17891                                     gfp_t gfp)
17892 {
17893         struct sk_buff *msg;
17894         void *hdr;
17895
17896         msg = nlmsg_new(100 + event->buf_len + event->req_ies_len, gfp);
17897         if (!msg)
17898                 return;
17899
17900         hdr = nl80211hdr_put(msg, 0, 0, 0, event->cmd);
17901         if (!hdr) {
17902                 nlmsg_free(msg);
17903                 return;
17904         }
17905
17906         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17907             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17908             nla_put(msg, NL80211_ATTR_FRAME, event->buf_len, event->buf) ||
17909             (event->req_ies &&
17910              nla_put(msg, NL80211_ATTR_REQ_IE, event->req_ies_len,
17911                      event->req_ies)))
17912                 goto nla_put_failure;
17913
17914         if (event->reconnect &&
17915             nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17916                 goto nla_put_failure;
17917
17918         if (event->uapsd_queues >= 0) {
17919                 struct nlattr *nla_wmm =
17920                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17921                 if (!nla_wmm)
17922                         goto nla_put_failure;
17923
17924                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17925                                event->uapsd_queues))
17926                         goto nla_put_failure;
17927
17928                 nla_nest_end(msg, nla_wmm);
17929         }
17930
17931         genlmsg_end(msg, hdr);
17932
17933         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17934                                 NL80211_MCGRP_MLME, gfp);
17935         return;
17936
17937  nla_put_failure:
17938         nlmsg_free(msg);
17939 }
17940
17941 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17942                           struct net_device *netdev, const u8 *buf,
17943                           size_t len, gfp_t gfp)
17944 {
17945         struct nl80211_mlme_event event = {
17946                 .cmd = NL80211_CMD_AUTHENTICATE,
17947                 .buf = buf,
17948                 .buf_len = len,
17949                 .uapsd_queues = -1,
17950         };
17951
17952         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17953 }
17954
17955 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17956                            struct net_device *netdev,
17957                            const struct cfg80211_rx_assoc_resp_data *data)
17958 {
17959         struct nl80211_mlme_event event = {
17960                 .cmd = NL80211_CMD_ASSOCIATE,
17961                 .buf = data->buf,
17962                 .buf_len = data->len,
17963                 .uapsd_queues = data->uapsd_queues,
17964                 .req_ies = data->req_ies,
17965                 .req_ies_len = data->req_ies_len,
17966         };
17967
17968         nl80211_send_mlme_event(rdev, netdev, &event, GFP_KERNEL);
17969 }
17970
17971 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17972                          struct net_device *netdev, const u8 *buf,
17973                          size_t len, bool reconnect, gfp_t gfp)
17974 {
17975         struct nl80211_mlme_event event = {
17976                 .cmd = NL80211_CMD_DEAUTHENTICATE,
17977                 .buf = buf,
17978                 .buf_len = len,
17979                 .reconnect = reconnect,
17980                 .uapsd_queues = -1,
17981         };
17982
17983         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17984 }
17985
17986 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17987                            struct net_device *netdev, const u8 *buf,
17988                            size_t len, bool reconnect, gfp_t gfp)
17989 {
17990         struct nl80211_mlme_event event = {
17991                 .cmd = NL80211_CMD_DISASSOCIATE,
17992                 .buf = buf,
17993                 .buf_len = len,
17994                 .reconnect = reconnect,
17995                 .uapsd_queues = -1,
17996         };
17997
17998         nl80211_send_mlme_event(rdev, netdev, &event, gfp);
17999 }
18000
18001 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
18002                                   size_t len)
18003 {
18004         struct wireless_dev *wdev = dev->ieee80211_ptr;
18005         struct wiphy *wiphy = wdev->wiphy;
18006         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18007         const struct ieee80211_mgmt *mgmt = (void *)buf;
18008         struct nl80211_mlme_event event = {
18009                 .buf = buf,
18010                 .buf_len = len,
18011                 .uapsd_queues = -1,
18012         };
18013
18014         if (WARN_ON(len < 2))
18015                 return;
18016
18017         if (ieee80211_is_deauth(mgmt->frame_control)) {
18018                 event.cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
18019         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
18020                 event.cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
18021         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
18022                 if (wdev->unprot_beacon_reported &&
18023                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
18024                         return;
18025                 event.cmd = NL80211_CMD_UNPROT_BEACON;
18026                 wdev->unprot_beacon_reported = jiffies;
18027         } else {
18028                 return;
18029         }
18030
18031         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
18032         nl80211_send_mlme_event(rdev, dev, &event, GFP_ATOMIC);
18033 }
18034 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
18035
18036 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
18037                                       struct net_device *netdev, int cmd,
18038                                       const u8 *addr, gfp_t gfp)
18039 {
18040         struct sk_buff *msg;
18041         void *hdr;
18042
18043         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18044         if (!msg)
18045                 return;
18046
18047         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18048         if (!hdr) {
18049                 nlmsg_free(msg);
18050                 return;
18051         }
18052
18053         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18054             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18055             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18056             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18057                 goto nla_put_failure;
18058
18059         genlmsg_end(msg, hdr);
18060
18061         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18062                                 NL80211_MCGRP_MLME, gfp);
18063         return;
18064
18065  nla_put_failure:
18066         nlmsg_free(msg);
18067 }
18068
18069 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
18070                                struct net_device *netdev, const u8 *addr,
18071                                gfp_t gfp)
18072 {
18073         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
18074                                   addr, gfp);
18075 }
18076
18077 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
18078                                 struct net_device *netdev, const u8 *addr,
18079                                 gfp_t gfp)
18080 {
18081         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
18082                                   addr, gfp);
18083 }
18084
18085 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
18086                                  struct net_device *netdev,
18087                                  struct cfg80211_connect_resp_params *cr,
18088                                  gfp_t gfp)
18089 {
18090         struct sk_buff *msg;
18091         void *hdr;
18092         unsigned int link;
18093         size_t link_info_size = 0;
18094         const u8 *connected_addr = cr->valid_links ?
18095                                    cr->ap_mld_addr : cr->links[0].bssid;
18096
18097         if (cr->valid_links) {
18098                 for_each_valid_link(cr, link) {
18099                         /* Nested attribute header */
18100                         link_info_size += NLA_HDRLEN;
18101                         /* Link ID */
18102                         link_info_size += nla_total_size(sizeof(u8));
18103                         link_info_size += cr->links[link].addr ?
18104                                           nla_total_size(ETH_ALEN) : 0;
18105                         link_info_size += (cr->links[link].bssid ||
18106                                            cr->links[link].bss) ?
18107                                           nla_total_size(ETH_ALEN) : 0;
18108                         link_info_size += nla_total_size(sizeof(u16));
18109                 }
18110         }
18111
18112         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
18113                         cr->fils.kek_len + cr->fils.pmk_len +
18114                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
18115                         gfp);
18116         if (!msg)
18117                 return;
18118
18119         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
18120         if (!hdr) {
18121                 nlmsg_free(msg);
18122                 return;
18123         }
18124
18125         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18126             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18127             (connected_addr &&
18128              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
18129             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18130                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
18131                         cr->status) ||
18132             (cr->status < 0 &&
18133              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
18134               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
18135                           cr->timeout_reason))) ||
18136             (cr->req_ie &&
18137              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
18138             (cr->resp_ie &&
18139              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
18140                      cr->resp_ie)) ||
18141             (cr->fils.update_erp_next_seq_num &&
18142              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18143                          cr->fils.erp_next_seq_num)) ||
18144             (cr->status == WLAN_STATUS_SUCCESS &&
18145              ((cr->fils.kek &&
18146                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
18147                        cr->fils.kek)) ||
18148               (cr->fils.pmk &&
18149                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
18150               (cr->fils.pmkid &&
18151                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
18152                 goto nla_put_failure;
18153
18154         if (cr->valid_links) {
18155                 int i = 1;
18156                 struct nlattr *nested;
18157
18158                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18159                 if (!nested)
18160                         goto nla_put_failure;
18161
18162                 for_each_valid_link(cr, link) {
18163                         struct nlattr *nested_mlo_links;
18164                         const u8 *bssid = cr->links[link].bss ?
18165                                           cr->links[link].bss->bssid :
18166                                           cr->links[link].bssid;
18167
18168                         nested_mlo_links = nla_nest_start(msg, i);
18169                         if (!nested_mlo_links)
18170                                 goto nla_put_failure;
18171
18172                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18173                             (bssid &&
18174                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18175                             (cr->links[link].addr &&
18176                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18177                                      cr->links[link].addr)) ||
18178                             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
18179                                         cr->links[link].status))
18180                                 goto nla_put_failure;
18181
18182                         nla_nest_end(msg, nested_mlo_links);
18183                         i++;
18184                 }
18185                 nla_nest_end(msg, nested);
18186         }
18187
18188         genlmsg_end(msg, hdr);
18189
18190         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18191                                 NL80211_MCGRP_MLME, gfp);
18192         return;
18193
18194  nla_put_failure:
18195         nlmsg_free(msg);
18196 }
18197
18198 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
18199                          struct net_device *netdev,
18200                          struct cfg80211_roam_info *info, gfp_t gfp)
18201 {
18202         struct sk_buff *msg;
18203         void *hdr;
18204         size_t link_info_size = 0;
18205         unsigned int link;
18206         const u8 *connected_addr = info->ap_mld_addr ?
18207                                    info->ap_mld_addr :
18208                                    (info->links[0].bss ?
18209                                     info->links[0].bss->bssid :
18210                                     info->links[0].bssid);
18211
18212         if (info->valid_links) {
18213                 for_each_valid_link(info, link) {
18214                         /* Nested attribute header */
18215                         link_info_size += NLA_HDRLEN;
18216                         /* Link ID */
18217                         link_info_size += nla_total_size(sizeof(u8));
18218                         link_info_size += info->links[link].addr ?
18219                                           nla_total_size(ETH_ALEN) : 0;
18220                         link_info_size += (info->links[link].bssid ||
18221                                            info->links[link].bss) ?
18222                                           nla_total_size(ETH_ALEN) : 0;
18223                 }
18224         }
18225
18226         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
18227                         info->fils.kek_len + info->fils.pmk_len +
18228                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
18229                         link_info_size, gfp);
18230         if (!msg)
18231                 return;
18232
18233         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
18234         if (!hdr) {
18235                 nlmsg_free(msg);
18236                 return;
18237         }
18238
18239         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18240             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18241             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
18242             (info->req_ie &&
18243              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
18244                      info->req_ie)) ||
18245             (info->resp_ie &&
18246              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
18247                      info->resp_ie)) ||
18248             (info->fils.update_erp_next_seq_num &&
18249              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
18250                          info->fils.erp_next_seq_num)) ||
18251             (info->fils.kek &&
18252              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
18253                      info->fils.kek)) ||
18254             (info->fils.pmk &&
18255              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
18256             (info->fils.pmkid &&
18257              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
18258                 goto nla_put_failure;
18259
18260         if (info->valid_links) {
18261                 int i = 1;
18262                 struct nlattr *nested;
18263
18264                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18265                 if (!nested)
18266                         goto nla_put_failure;
18267
18268                 for_each_valid_link(info, link) {
18269                         struct nlattr *nested_mlo_links;
18270                         const u8 *bssid = info->links[link].bss ?
18271                                           info->links[link].bss->bssid :
18272                                           info->links[link].bssid;
18273
18274                         nested_mlo_links = nla_nest_start(msg, i);
18275                         if (!nested_mlo_links)
18276                                 goto nla_put_failure;
18277
18278                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
18279                             (bssid &&
18280                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
18281                             (info->links[link].addr &&
18282                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
18283                                      info->links[link].addr)))
18284                                 goto nla_put_failure;
18285
18286                         nla_nest_end(msg, nested_mlo_links);
18287                         i++;
18288                 }
18289                 nla_nest_end(msg, nested);
18290         }
18291
18292         genlmsg_end(msg, hdr);
18293
18294         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18295                                 NL80211_MCGRP_MLME, gfp);
18296         return;
18297
18298  nla_put_failure:
18299         nlmsg_free(msg);
18300 }
18301
18302 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
18303                                   struct net_device *netdev, const u8 *peer_addr,
18304                                   const u8 *td_bitmap, u8 td_bitmap_len)
18305 {
18306         struct sk_buff *msg;
18307         void *hdr;
18308
18309         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18310         if (!msg)
18311                 return;
18312
18313         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
18314         if (!hdr) {
18315                 nlmsg_free(msg);
18316                 return;
18317         }
18318
18319         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18320             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18321             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer_addr))
18322                 goto nla_put_failure;
18323
18324         if ((td_bitmap_len > 0) && td_bitmap)
18325                 if (nla_put(msg, NL80211_ATTR_TD_BITMAP,
18326                             td_bitmap_len, td_bitmap))
18327                         goto nla_put_failure;
18328
18329         genlmsg_end(msg, hdr);
18330
18331         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18332                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18333         return;
18334
18335  nla_put_failure:
18336         nlmsg_free(msg);
18337 }
18338
18339 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
18340                                struct net_device *netdev, u16 reason,
18341                                const u8 *ie, size_t ie_len, bool from_ap)
18342 {
18343         struct sk_buff *msg;
18344         void *hdr;
18345
18346         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
18347         if (!msg)
18348                 return;
18349
18350         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
18351         if (!hdr) {
18352                 nlmsg_free(msg);
18353                 return;
18354         }
18355
18356         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18357             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18358             (reason &&
18359              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
18360             (from_ap &&
18361              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
18362             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
18363                 goto nla_put_failure;
18364
18365         genlmsg_end(msg, hdr);
18366
18367         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18368                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18369         return;
18370
18371  nla_put_failure:
18372         nlmsg_free(msg);
18373 }
18374
18375 void cfg80211_links_removed(struct net_device *dev, u16 link_mask)
18376 {
18377         struct wireless_dev *wdev = dev->ieee80211_ptr;
18378         struct wiphy *wiphy = wdev->wiphy;
18379         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18380         struct sk_buff *msg;
18381         struct nlattr *links;
18382         void *hdr;
18383
18384         lockdep_assert_wiphy(wdev->wiphy);
18385         trace_cfg80211_links_removed(dev, link_mask);
18386
18387         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
18388                     wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
18389                 return;
18390
18391         if (WARN_ON(!wdev->valid_links || !link_mask ||
18392                     (wdev->valid_links & link_mask) != link_mask ||
18393                     wdev->valid_links == link_mask))
18394                 return;
18395
18396         cfg80211_wdev_release_link_bsses(wdev, link_mask);
18397         wdev->valid_links &= ~link_mask;
18398
18399         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18400         if (!msg)
18401                 return;
18402
18403         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_LINKS_REMOVED);
18404         if (!hdr) {
18405                 nlmsg_free(msg);
18406                 return;
18407         }
18408
18409         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18410             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18411                 goto nla_put_failure;
18412
18413         links = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
18414         if (!links)
18415                 goto nla_put_failure;
18416
18417         while (link_mask) {
18418                 struct nlattr *link;
18419                 int link_id = __ffs(link_mask);
18420
18421                 link = nla_nest_start(msg, link_id + 1);
18422                 if (!link)
18423                         goto nla_put_failure;
18424
18425                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18426                         goto nla_put_failure;
18427
18428                 nla_nest_end(msg, link);
18429                 link_mask &= ~(1 << link_id);
18430         }
18431
18432         nla_nest_end(msg, links);
18433
18434         genlmsg_end(msg, hdr);
18435
18436         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18437                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18438         return;
18439
18440  nla_put_failure:
18441         nlmsg_free(msg);
18442 }
18443 EXPORT_SYMBOL(cfg80211_links_removed);
18444
18445 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18446                              struct net_device *netdev, const u8 *bssid,
18447                              gfp_t gfp)
18448 {
18449         struct sk_buff *msg;
18450         void *hdr;
18451
18452         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18453         if (!msg)
18454                 return;
18455
18456         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18457         if (!hdr) {
18458                 nlmsg_free(msg);
18459                 return;
18460         }
18461
18462         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18463             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18464             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18465                 goto nla_put_failure;
18466
18467         genlmsg_end(msg, hdr);
18468
18469         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18470                                 NL80211_MCGRP_MLME, gfp);
18471         return;
18472
18473  nla_put_failure:
18474         nlmsg_free(msg);
18475 }
18476
18477 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18478                                         const u8 *ie, u8 ie_len,
18479                                         int sig_dbm, gfp_t gfp)
18480 {
18481         struct wireless_dev *wdev = dev->ieee80211_ptr;
18482         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18483         struct sk_buff *msg;
18484         void *hdr;
18485
18486         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18487                 return;
18488
18489         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18490
18491         msg = nlmsg_new(100 + ie_len, gfp);
18492         if (!msg)
18493                 return;
18494
18495         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18496         if (!hdr) {
18497                 nlmsg_free(msg);
18498                 return;
18499         }
18500
18501         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18502             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18503             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18504             (ie_len && ie &&
18505              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18506             (sig_dbm &&
18507              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18508                 goto nla_put_failure;
18509
18510         genlmsg_end(msg, hdr);
18511
18512         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18513                                 NL80211_MCGRP_MLME, gfp);
18514         return;
18515
18516  nla_put_failure:
18517         nlmsg_free(msg);
18518 }
18519 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18520
18521 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18522                                  struct net_device *netdev, const u8 *addr,
18523                                  enum nl80211_key_type key_type, int key_id,
18524                                  const u8 *tsc, gfp_t gfp)
18525 {
18526         struct sk_buff *msg;
18527         void *hdr;
18528
18529         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18530         if (!msg)
18531                 return;
18532
18533         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18534         if (!hdr) {
18535                 nlmsg_free(msg);
18536                 return;
18537         }
18538
18539         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18540             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18541             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18542             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18543             (key_id != -1 &&
18544              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18545             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18546                 goto nla_put_failure;
18547
18548         genlmsg_end(msg, hdr);
18549
18550         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18551                                 NL80211_MCGRP_MLME, gfp);
18552         return;
18553
18554  nla_put_failure:
18555         nlmsg_free(msg);
18556 }
18557
18558 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18559                                     struct ieee80211_channel *channel_before,
18560                                     struct ieee80211_channel *channel_after)
18561 {
18562         struct sk_buff *msg;
18563         void *hdr;
18564         struct nlattr *nl_freq;
18565
18566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18567         if (!msg)
18568                 return;
18569
18570         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18571         if (!hdr) {
18572                 nlmsg_free(msg);
18573                 return;
18574         }
18575
18576         /*
18577          * Since we are applying the beacon hint to a wiphy we know its
18578          * wiphy_idx is valid
18579          */
18580         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18581                 goto nla_put_failure;
18582
18583         /* Before */
18584         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18585         if (!nl_freq)
18586                 goto nla_put_failure;
18587
18588         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18589                 goto nla_put_failure;
18590         nla_nest_end(msg, nl_freq);
18591
18592         /* After */
18593         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18594         if (!nl_freq)
18595                 goto nla_put_failure;
18596
18597         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18598                 goto nla_put_failure;
18599         nla_nest_end(msg, nl_freq);
18600
18601         genlmsg_end(msg, hdr);
18602
18603         rcu_read_lock();
18604         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18605                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18606         rcu_read_unlock();
18607
18608         return;
18609
18610 nla_put_failure:
18611         nlmsg_free(msg);
18612 }
18613
18614 static void nl80211_send_remain_on_chan_event(
18615         int cmd, struct cfg80211_registered_device *rdev,
18616         struct wireless_dev *wdev, u64 cookie,
18617         struct ieee80211_channel *chan,
18618         unsigned int duration, gfp_t gfp)
18619 {
18620         struct sk_buff *msg;
18621         void *hdr;
18622
18623         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18624         if (!msg)
18625                 return;
18626
18627         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18628         if (!hdr) {
18629                 nlmsg_free(msg);
18630                 return;
18631         }
18632
18633         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18634             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18635                                          wdev->netdev->ifindex)) ||
18636             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18637                               NL80211_ATTR_PAD) ||
18638             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18639             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18640                         NL80211_CHAN_NO_HT) ||
18641             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18642                               NL80211_ATTR_PAD))
18643                 goto nla_put_failure;
18644
18645         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18646             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18647                 goto nla_put_failure;
18648
18649         genlmsg_end(msg, hdr);
18650
18651         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18652                                 NL80211_MCGRP_MLME, gfp);
18653         return;
18654
18655  nla_put_failure:
18656         nlmsg_free(msg);
18657 }
18658
18659 void cfg80211_assoc_comeback(struct net_device *netdev,
18660                              const u8 *ap_addr, u32 timeout)
18661 {
18662         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18663         struct wiphy *wiphy = wdev->wiphy;
18664         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18665         struct sk_buff *msg;
18666         void *hdr;
18667
18668         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18669
18670         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18671         if (!msg)
18672                 return;
18673
18674         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18675         if (!hdr) {
18676                 nlmsg_free(msg);
18677                 return;
18678         }
18679
18680         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18681             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18682             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18683             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18684                 goto nla_put_failure;
18685
18686         genlmsg_end(msg, hdr);
18687
18688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18689                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18690         return;
18691
18692  nla_put_failure:
18693         nlmsg_free(msg);
18694 }
18695 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18696
18697 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18698                                struct ieee80211_channel *chan,
18699                                unsigned int duration, gfp_t gfp)
18700 {
18701         struct wiphy *wiphy = wdev->wiphy;
18702         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18703
18704         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18705         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18706                                           rdev, wdev, cookie, chan,
18707                                           duration, gfp);
18708 }
18709 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18710
18711 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18712                                         struct ieee80211_channel *chan,
18713                                         gfp_t gfp)
18714 {
18715         struct wiphy *wiphy = wdev->wiphy;
18716         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18717
18718         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18719         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18720                                           rdev, wdev, cookie, chan, 0, gfp);
18721 }
18722 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18723
18724 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18725                                         struct ieee80211_channel *chan,
18726                                         gfp_t gfp)
18727 {
18728         struct wiphy *wiphy = wdev->wiphy;
18729         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18730
18731         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18732         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18733                                           rdev, wdev, cookie, chan, 0, gfp);
18734 }
18735 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18736
18737 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18738                       struct station_info *sinfo, gfp_t gfp)
18739 {
18740         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18741         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18742         struct sk_buff *msg;
18743
18744         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18745
18746         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18747         if (!msg)
18748                 return;
18749
18750         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18751                                  rdev, dev, mac_addr, sinfo) < 0) {
18752                 nlmsg_free(msg);
18753                 return;
18754         }
18755
18756         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18757                                 NL80211_MCGRP_MLME, gfp);
18758 }
18759 EXPORT_SYMBOL(cfg80211_new_sta);
18760
18761 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18762                             struct station_info *sinfo, gfp_t gfp)
18763 {
18764         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18765         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18766         struct sk_buff *msg;
18767         struct station_info empty_sinfo = {};
18768
18769         if (!sinfo)
18770                 sinfo = &empty_sinfo;
18771
18772         trace_cfg80211_del_sta(dev, mac_addr);
18773
18774         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18775         if (!msg) {
18776                 cfg80211_sinfo_release_content(sinfo);
18777                 return;
18778         }
18779
18780         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18781                                  rdev, dev, mac_addr, sinfo) < 0) {
18782                 nlmsg_free(msg);
18783                 return;
18784         }
18785
18786         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18787                                 NL80211_MCGRP_MLME, gfp);
18788 }
18789 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18790
18791 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18792                           enum nl80211_connect_failed_reason reason,
18793                           gfp_t gfp)
18794 {
18795         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18796         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18797         struct sk_buff *msg;
18798         void *hdr;
18799
18800         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18801         if (!msg)
18802                 return;
18803
18804         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18805         if (!hdr) {
18806                 nlmsg_free(msg);
18807                 return;
18808         }
18809
18810         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18811             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18812             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18813                 goto nla_put_failure;
18814
18815         genlmsg_end(msg, hdr);
18816
18817         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18818                                 NL80211_MCGRP_MLME, gfp);
18819         return;
18820
18821  nla_put_failure:
18822         nlmsg_free(msg);
18823 }
18824 EXPORT_SYMBOL(cfg80211_conn_failed);
18825
18826 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18827                                        const u8 *addr, gfp_t gfp)
18828 {
18829         struct wireless_dev *wdev = dev->ieee80211_ptr;
18830         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18831         struct sk_buff *msg;
18832         void *hdr;
18833         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18834
18835         if (!nlportid)
18836                 return false;
18837
18838         msg = nlmsg_new(100, gfp);
18839         if (!msg)
18840                 return true;
18841
18842         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18843         if (!hdr) {
18844                 nlmsg_free(msg);
18845                 return true;
18846         }
18847
18848         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18849             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18850             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18851                 goto nla_put_failure;
18852
18853         genlmsg_end(msg, hdr);
18854         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18855         return true;
18856
18857  nla_put_failure:
18858         nlmsg_free(msg);
18859         return true;
18860 }
18861
18862 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18863                                 const u8 *addr, gfp_t gfp)
18864 {
18865         struct wireless_dev *wdev = dev->ieee80211_ptr;
18866         bool ret;
18867
18868         trace_cfg80211_rx_spurious_frame(dev, addr);
18869
18870         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18871                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18872                 trace_cfg80211_return_bool(false);
18873                 return false;
18874         }
18875         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18876                                          addr, gfp);
18877         trace_cfg80211_return_bool(ret);
18878         return ret;
18879 }
18880 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18881
18882 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18883                                         const u8 *addr, gfp_t gfp)
18884 {
18885         struct wireless_dev *wdev = dev->ieee80211_ptr;
18886         bool ret;
18887
18888         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18889
18890         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18891                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18892                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18893                 trace_cfg80211_return_bool(false);
18894                 return false;
18895         }
18896         ret = __nl80211_unexpected_frame(dev,
18897                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18898                                          addr, gfp);
18899         trace_cfg80211_return_bool(ret);
18900         return ret;
18901 }
18902 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18903
18904 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18905                       struct wireless_dev *wdev, u32 nlportid,
18906                       struct cfg80211_rx_info *info, gfp_t gfp)
18907 {
18908         struct net_device *netdev = wdev->netdev;
18909         struct sk_buff *msg;
18910         void *hdr;
18911
18912         msg = nlmsg_new(100 + info->len, gfp);
18913         if (!msg)
18914                 return -ENOMEM;
18915
18916         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18917         if (!hdr) {
18918                 nlmsg_free(msg);
18919                 return -ENOMEM;
18920         }
18921
18922         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18923             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18924                                         netdev->ifindex)) ||
18925             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18926                               NL80211_ATTR_PAD) ||
18927             (info->have_link_id &&
18928              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18929             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18930             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18931             (info->sig_dbm &&
18932              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18933             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18934             (info->flags &&
18935              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18936             (info->rx_tstamp && nla_put_u64_64bit(msg,
18937                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18938                                                   info->rx_tstamp,
18939                                                   NL80211_ATTR_PAD)) ||
18940             (info->ack_tstamp && nla_put_u64_64bit(msg,
18941                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18942                                                    info->ack_tstamp,
18943                                                    NL80211_ATTR_PAD)))
18944                 goto nla_put_failure;
18945
18946         genlmsg_end(msg, hdr);
18947
18948         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18949
18950  nla_put_failure:
18951         nlmsg_free(msg);
18952         return -ENOBUFS;
18953 }
18954
18955 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18956                                     struct cfg80211_tx_status *status,
18957                                     gfp_t gfp, enum nl80211_commands command)
18958 {
18959         struct wiphy *wiphy = wdev->wiphy;
18960         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18961         struct net_device *netdev = wdev->netdev;
18962         struct sk_buff *msg;
18963         void *hdr;
18964
18965         if (command == NL80211_CMD_FRAME_TX_STATUS)
18966                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18967                                               status->ack);
18968         else
18969                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18970                                                       status->ack);
18971
18972         msg = nlmsg_new(100 + status->len, gfp);
18973         if (!msg)
18974                 return;
18975
18976         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18977         if (!hdr) {
18978                 nlmsg_free(msg);
18979                 return;
18980         }
18981
18982         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18983             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18984                                    netdev->ifindex)) ||
18985             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18986                               NL80211_ATTR_PAD) ||
18987             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18988             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18989                               NL80211_ATTR_PAD) ||
18990             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18991             (status->tx_tstamp &&
18992              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18993                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18994             (status->ack_tstamp &&
18995              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18996                                status->ack_tstamp, NL80211_ATTR_PAD)))
18997                 goto nla_put_failure;
18998
18999         genlmsg_end(msg, hdr);
19000
19001         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19002                                 NL80211_MCGRP_MLME, gfp);
19003         return;
19004
19005 nla_put_failure:
19006         nlmsg_free(msg);
19007 }
19008
19009 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
19010                                      const u8 *buf, size_t len, bool ack,
19011                                      gfp_t gfp)
19012 {
19013         struct cfg80211_tx_status status = {
19014                 .cookie = cookie,
19015                 .buf = buf,
19016                 .len = len,
19017                 .ack = ack
19018         };
19019
19020         nl80211_frame_tx_status(wdev, &status, gfp,
19021                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
19022 }
19023 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
19024
19025 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
19026                                  struct cfg80211_tx_status *status, gfp_t gfp)
19027 {
19028         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
19029 }
19030 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
19031
19032 static int __nl80211_rx_control_port(struct net_device *dev,
19033                                      struct sk_buff *skb,
19034                                      bool unencrypted,
19035                                      int link_id,
19036                                      gfp_t gfp)
19037 {
19038         struct wireless_dev *wdev = dev->ieee80211_ptr;
19039         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19040         struct ethhdr *ehdr = eth_hdr(skb);
19041         const u8 *addr = ehdr->h_source;
19042         u16 proto = be16_to_cpu(skb->protocol);
19043         struct sk_buff *msg;
19044         void *hdr;
19045         struct nlattr *frame;
19046
19047         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
19048
19049         if (!nlportid)
19050                 return -ENOENT;
19051
19052         msg = nlmsg_new(100 + skb->len, gfp);
19053         if (!msg)
19054                 return -ENOMEM;
19055
19056         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
19057         if (!hdr) {
19058                 nlmsg_free(msg);
19059                 return -ENOBUFS;
19060         }
19061
19062         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19063             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19064             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19065                               NL80211_ATTR_PAD) ||
19066             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19067             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
19068             (link_id >= 0 &&
19069              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)) ||
19070             (unencrypted && nla_put_flag(msg,
19071                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
19072                 goto nla_put_failure;
19073
19074         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
19075         if (!frame)
19076                 goto nla_put_failure;
19077
19078         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
19079         genlmsg_end(msg, hdr);
19080
19081         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19082
19083  nla_put_failure:
19084         nlmsg_free(msg);
19085         return -ENOBUFS;
19086 }
19087
19088 bool cfg80211_rx_control_port(struct net_device *dev, struct sk_buff *skb,
19089                               bool unencrypted, int link_id)
19090 {
19091         int ret;
19092
19093         trace_cfg80211_rx_control_port(dev, skb, unencrypted, link_id);
19094         ret = __nl80211_rx_control_port(dev, skb, unencrypted, link_id,
19095                                         GFP_ATOMIC);
19096         trace_cfg80211_return_bool(ret == 0);
19097         return ret == 0;
19098 }
19099 EXPORT_SYMBOL(cfg80211_rx_control_port);
19100
19101 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
19102                                             const char *mac, gfp_t gfp)
19103 {
19104         struct wireless_dev *wdev = dev->ieee80211_ptr;
19105         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19106         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19107         void **cb;
19108
19109         if (!msg)
19110                 return NULL;
19111
19112         cb = (void **)msg->cb;
19113
19114         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
19115         if (!cb[0]) {
19116                 nlmsg_free(msg);
19117                 return NULL;
19118         }
19119
19120         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19121             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19122                 goto nla_put_failure;
19123
19124         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19125                 goto nla_put_failure;
19126
19127         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
19128         if (!cb[1])
19129                 goto nla_put_failure;
19130
19131         cb[2] = rdev;
19132
19133         return msg;
19134  nla_put_failure:
19135         nlmsg_free(msg);
19136         return NULL;
19137 }
19138
19139 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
19140 {
19141         void **cb = (void **)msg->cb;
19142         struct cfg80211_registered_device *rdev = cb[2];
19143
19144         nla_nest_end(msg, cb[1]);
19145         genlmsg_end(msg, cb[0]);
19146
19147         memset(msg->cb, 0, sizeof(msg->cb));
19148
19149         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19150                                 NL80211_MCGRP_MLME, gfp);
19151 }
19152
19153 void cfg80211_cqm_rssi_notify(struct net_device *dev,
19154                               enum nl80211_cqm_rssi_threshold_event rssi_event,
19155                               s32 rssi_level, gfp_t gfp)
19156 {
19157         struct wireless_dev *wdev = dev->ieee80211_ptr;
19158         struct cfg80211_cqm_config *cqm_config;
19159
19160         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
19161
19162         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
19163                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
19164                 return;
19165
19166         rcu_read_lock();
19167         cqm_config = rcu_dereference(wdev->cqm_config);
19168         if (cqm_config) {
19169                 cqm_config->last_rssi_event_value = rssi_level;
19170                 cqm_config->last_rssi_event_type = rssi_event;
19171                 wiphy_work_queue(wdev->wiphy, &wdev->cqm_rssi_work);
19172         }
19173         rcu_read_unlock();
19174 }
19175 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
19176
19177 void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
19178 {
19179         struct wireless_dev *wdev = container_of(work, struct wireless_dev,
19180                                                  cqm_rssi_work);
19181         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19182         enum nl80211_cqm_rssi_threshold_event rssi_event;
19183         struct cfg80211_cqm_config *cqm_config;
19184         struct sk_buff *msg;
19185         s32 rssi_level;
19186
19187         cqm_config = wiphy_dereference(wdev->wiphy, wdev->cqm_config);
19188         if (!cqm_config)
19189                 return;
19190
19191         if (cqm_config->use_range_api)
19192                 cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
19193
19194         rssi_level = cqm_config->last_rssi_event_value;
19195         rssi_event = cqm_config->last_rssi_event_type;
19196
19197         msg = cfg80211_prepare_cqm(wdev->netdev, NULL, GFP_KERNEL);
19198         if (!msg)
19199                 return;
19200
19201         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
19202                         rssi_event))
19203                 goto nla_put_failure;
19204
19205         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
19206                                       rssi_level))
19207                 goto nla_put_failure;
19208
19209         cfg80211_send_cqm(msg, GFP_KERNEL);
19210
19211         return;
19212
19213  nla_put_failure:
19214         nlmsg_free(msg);
19215 }
19216
19217 void cfg80211_cqm_txe_notify(struct net_device *dev,
19218                              const u8 *peer, u32 num_packets,
19219                              u32 rate, u32 intvl, gfp_t gfp)
19220 {
19221         struct sk_buff *msg;
19222
19223         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19224         if (!msg)
19225                 return;
19226
19227         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
19228                 goto nla_put_failure;
19229
19230         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
19231                 goto nla_put_failure;
19232
19233         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
19234                 goto nla_put_failure;
19235
19236         cfg80211_send_cqm(msg, gfp);
19237         return;
19238
19239  nla_put_failure:
19240         nlmsg_free(msg);
19241 }
19242 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
19243
19244 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
19245                                  const u8 *peer, u32 num_packets, gfp_t gfp)
19246 {
19247         struct sk_buff *msg;
19248
19249         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
19250
19251         msg = cfg80211_prepare_cqm(dev, peer, gfp);
19252         if (!msg)
19253                 return;
19254
19255         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
19256                 goto nla_put_failure;
19257
19258         cfg80211_send_cqm(msg, gfp);
19259         return;
19260
19261  nla_put_failure:
19262         nlmsg_free(msg);
19263 }
19264 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
19265
19266 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
19267 {
19268         struct sk_buff *msg;
19269
19270         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
19271         if (!msg)
19272                 return;
19273
19274         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
19275                 goto nla_put_failure;
19276
19277         cfg80211_send_cqm(msg, gfp);
19278         return;
19279
19280  nla_put_failure:
19281         nlmsg_free(msg);
19282 }
19283 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
19284
19285 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
19286                                      struct net_device *netdev, const u8 *bssid,
19287                                      const u8 *replay_ctr, gfp_t gfp)
19288 {
19289         struct sk_buff *msg;
19290         struct nlattr *rekey_attr;
19291         void *hdr;
19292
19293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19294         if (!msg)
19295                 return;
19296
19297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
19298         if (!hdr) {
19299                 nlmsg_free(msg);
19300                 return;
19301         }
19302
19303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19305             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
19306                 goto nla_put_failure;
19307
19308         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
19309         if (!rekey_attr)
19310                 goto nla_put_failure;
19311
19312         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
19313                     NL80211_REPLAY_CTR_LEN, replay_ctr))
19314                 goto nla_put_failure;
19315
19316         nla_nest_end(msg, rekey_attr);
19317
19318         genlmsg_end(msg, hdr);
19319
19320         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19321                                 NL80211_MCGRP_MLME, gfp);
19322         return;
19323
19324  nla_put_failure:
19325         nlmsg_free(msg);
19326 }
19327
19328 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
19329                                const u8 *replay_ctr, gfp_t gfp)
19330 {
19331         struct wireless_dev *wdev = dev->ieee80211_ptr;
19332         struct wiphy *wiphy = wdev->wiphy;
19333         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19334
19335         trace_cfg80211_gtk_rekey_notify(dev, bssid);
19336         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
19337 }
19338 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
19339
19340 static void
19341 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
19342                                struct net_device *netdev, int index,
19343                                const u8 *bssid, bool preauth, gfp_t gfp)
19344 {
19345         struct sk_buff *msg;
19346         struct nlattr *attr;
19347         void *hdr;
19348
19349         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19350         if (!msg)
19351                 return;
19352
19353         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
19354         if (!hdr) {
19355                 nlmsg_free(msg);
19356                 return;
19357         }
19358
19359         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19360             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19361                 goto nla_put_failure;
19362
19363         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
19364         if (!attr)
19365                 goto nla_put_failure;
19366
19367         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
19368             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
19369             (preauth &&
19370              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
19371                 goto nla_put_failure;
19372
19373         nla_nest_end(msg, attr);
19374
19375         genlmsg_end(msg, hdr);
19376
19377         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19378                                 NL80211_MCGRP_MLME, gfp);
19379         return;
19380
19381  nla_put_failure:
19382         nlmsg_free(msg);
19383 }
19384
19385 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
19386                                      const u8 *bssid, bool preauth, gfp_t gfp)
19387 {
19388         struct wireless_dev *wdev = dev->ieee80211_ptr;
19389         struct wiphy *wiphy = wdev->wiphy;
19390         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19391
19392         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
19393         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
19394 }
19395 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
19396
19397 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
19398                                      struct net_device *netdev,
19399                                      unsigned int link_id,
19400                                      struct cfg80211_chan_def *chandef,
19401                                      gfp_t gfp,
19402                                      enum nl80211_commands notif,
19403                                      u8 count, bool quiet, u16 punct_bitmap)
19404 {
19405         struct wireless_dev *wdev = netdev->ieee80211_ptr;
19406         struct sk_buff *msg;
19407         void *hdr;
19408
19409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19410         if (!msg)
19411                 return;
19412
19413         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
19414         if (!hdr) {
19415                 nlmsg_free(msg);
19416                 return;
19417         }
19418
19419         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
19420                 goto nla_put_failure;
19421
19422         if (wdev->valid_links &&
19423             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
19424                 goto nla_put_failure;
19425
19426         if (nl80211_send_chandef(msg, chandef))
19427                 goto nla_put_failure;
19428
19429         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
19430                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
19431                         goto nla_put_failure;
19432                 if (quiet &&
19433                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
19434                         goto nla_put_failure;
19435         }
19436
19437         if (nla_put_u32(msg, NL80211_ATTR_PUNCT_BITMAP, punct_bitmap))
19438                 goto nla_put_failure;
19439
19440         genlmsg_end(msg, hdr);
19441
19442         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19443                                 NL80211_MCGRP_MLME, gfp);
19444         return;
19445
19446  nla_put_failure:
19447         nlmsg_free(msg);
19448 }
19449
19450 void cfg80211_ch_switch_notify(struct net_device *dev,
19451                                struct cfg80211_chan_def *chandef,
19452                                unsigned int link_id, u16 punct_bitmap)
19453 {
19454         struct wireless_dev *wdev = dev->ieee80211_ptr;
19455         struct wiphy *wiphy = wdev->wiphy;
19456         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19457
19458         lockdep_assert_wiphy(wdev->wiphy);
19459         WARN_INVALID_LINK_ID(wdev, link_id);
19460
19461         trace_cfg80211_ch_switch_notify(dev, chandef, link_id, punct_bitmap);
19462
19463         switch (wdev->iftype) {
19464         case NL80211_IFTYPE_STATION:
19465         case NL80211_IFTYPE_P2P_CLIENT:
19466                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19467                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19468                                                         chandef->chan);
19469                 break;
19470         case NL80211_IFTYPE_MESH_POINT:
19471                 wdev->u.mesh.chandef = *chandef;
19472                 wdev->u.mesh.preset_chandef = *chandef;
19473                 break;
19474         case NL80211_IFTYPE_AP:
19475         case NL80211_IFTYPE_P2P_GO:
19476                 wdev->links[link_id].ap.chandef = *chandef;
19477                 break;
19478         case NL80211_IFTYPE_ADHOC:
19479                 wdev->u.ibss.chandef = *chandef;
19480                 break;
19481         default:
19482                 WARN_ON(1);
19483                 break;
19484         }
19485
19486         cfg80211_schedule_channels_check(wdev);
19487         cfg80211_sched_dfs_chan_update(rdev);
19488
19489         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19490                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false,
19491                                  punct_bitmap);
19492 }
19493 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19494
19495 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19496                                        struct cfg80211_chan_def *chandef,
19497                                        unsigned int link_id, u8 count,
19498                                        bool quiet, u16 punct_bitmap)
19499 {
19500         struct wireless_dev *wdev = dev->ieee80211_ptr;
19501         struct wiphy *wiphy = wdev->wiphy;
19502         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19503
19504         lockdep_assert_wiphy(wdev->wiphy);
19505         WARN_INVALID_LINK_ID(wdev, link_id);
19506
19507         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id,
19508                                                 punct_bitmap);
19509
19510
19511         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19512                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19513                                  count, quiet, punct_bitmap);
19514 }
19515 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19516
19517 int cfg80211_bss_color_notify(struct net_device *dev,
19518                               enum nl80211_commands cmd, u8 count,
19519                               u64 color_bitmap)
19520 {
19521         struct wireless_dev *wdev = dev->ieee80211_ptr;
19522         struct wiphy *wiphy = wdev->wiphy;
19523         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19524         struct sk_buff *msg;
19525         void *hdr;
19526
19527         lockdep_assert_wiphy(wdev->wiphy);
19528
19529         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19530
19531         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19532         if (!msg)
19533                 return -ENOMEM;
19534
19535         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19536         if (!hdr)
19537                 goto nla_put_failure;
19538
19539         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19540                 goto nla_put_failure;
19541
19542         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19543             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19544                 goto nla_put_failure;
19545
19546         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19547             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19548                               color_bitmap, NL80211_ATTR_PAD))
19549                 goto nla_put_failure;
19550
19551         genlmsg_end(msg, hdr);
19552
19553         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19554                                        msg, 0, NL80211_MCGRP_MLME, GFP_KERNEL);
19555
19556 nla_put_failure:
19557         nlmsg_free(msg);
19558         return -EINVAL;
19559 }
19560 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19561
19562 void
19563 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19564                      const struct cfg80211_chan_def *chandef,
19565                      enum nl80211_radar_event event,
19566                      struct net_device *netdev, gfp_t gfp)
19567 {
19568         struct sk_buff *msg;
19569         void *hdr;
19570
19571         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19572         if (!msg)
19573                 return;
19574
19575         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19576         if (!hdr) {
19577                 nlmsg_free(msg);
19578                 return;
19579         }
19580
19581         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19582                 goto nla_put_failure;
19583
19584         /* NOP and radar events don't need a netdev parameter */
19585         if (netdev) {
19586                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19587
19588                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19589                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19590                                       NL80211_ATTR_PAD))
19591                         goto nla_put_failure;
19592         }
19593
19594         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19595                 goto nla_put_failure;
19596
19597         if (nl80211_send_chandef(msg, chandef))
19598                 goto nla_put_failure;
19599
19600         genlmsg_end(msg, hdr);
19601
19602         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19603                                 NL80211_MCGRP_MLME, gfp);
19604         return;
19605
19606  nla_put_failure:
19607         nlmsg_free(msg);
19608 }
19609
19610 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19611                                        struct sta_opmode_info *sta_opmode,
19612                                        gfp_t gfp)
19613 {
19614         struct sk_buff *msg;
19615         struct wireless_dev *wdev = dev->ieee80211_ptr;
19616         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19617         void *hdr;
19618
19619         if (WARN_ON(!mac))
19620                 return;
19621
19622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19623         if (!msg)
19624                 return;
19625
19626         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19627         if (!hdr) {
19628                 nlmsg_free(msg);
19629                 return;
19630         }
19631
19632         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19633                 goto nla_put_failure;
19634
19635         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19636                 goto nla_put_failure;
19637
19638         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19639                 goto nla_put_failure;
19640
19641         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19642             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19643                 goto nla_put_failure;
19644
19645         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19646             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19647                 goto nla_put_failure;
19648
19649         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19650             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19651                 goto nla_put_failure;
19652
19653         genlmsg_end(msg, hdr);
19654
19655         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19656                                 NL80211_MCGRP_MLME, gfp);
19657
19658         return;
19659
19660 nla_put_failure:
19661         nlmsg_free(msg);
19662 }
19663 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19664
19665 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19666                            u64 cookie, bool acked, s32 ack_signal,
19667                            bool is_valid_ack_signal, gfp_t gfp)
19668 {
19669         struct wireless_dev *wdev = dev->ieee80211_ptr;
19670         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19671         struct sk_buff *msg;
19672         void *hdr;
19673
19674         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19675
19676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19677
19678         if (!msg)
19679                 return;
19680
19681         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19682         if (!hdr) {
19683                 nlmsg_free(msg);
19684                 return;
19685         }
19686
19687         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19688             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19689             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19690             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19691                               NL80211_ATTR_PAD) ||
19692             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19693             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19694                                                 ack_signal)))
19695                 goto nla_put_failure;
19696
19697         genlmsg_end(msg, hdr);
19698
19699         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19700                                 NL80211_MCGRP_MLME, gfp);
19701         return;
19702
19703  nla_put_failure:
19704         nlmsg_free(msg);
19705 }
19706 EXPORT_SYMBOL(cfg80211_probe_status);
19707
19708 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19709                                      size_t len, int freq, int sig_dbm)
19710 {
19711         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19712         struct sk_buff *msg;
19713         void *hdr;
19714         struct cfg80211_beacon_registration *reg;
19715
19716         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19717
19718         spin_lock_bh(&rdev->beacon_registrations_lock);
19719         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19720                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19721                 if (!msg) {
19722                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19723                         return;
19724                 }
19725
19726                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19727                 if (!hdr)
19728                         goto nla_put_failure;
19729
19730                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19731                     (freq &&
19732                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19733                                   KHZ_TO_MHZ(freq)) ||
19734                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19735                                   freq % 1000))) ||
19736                     (sig_dbm &&
19737                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19738                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19739                         goto nla_put_failure;
19740
19741                 genlmsg_end(msg, hdr);
19742
19743                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19744         }
19745         spin_unlock_bh(&rdev->beacon_registrations_lock);
19746         return;
19747
19748  nla_put_failure:
19749         spin_unlock_bh(&rdev->beacon_registrations_lock);
19750         nlmsg_free(msg);
19751 }
19752 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19753
19754 #ifdef CONFIG_PM
19755 static int cfg80211_net_detect_results(struct sk_buff *msg,
19756                                        struct cfg80211_wowlan_wakeup *wakeup)
19757 {
19758         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19759         struct nlattr *nl_results, *nl_match, *nl_freqs;
19760         int i, j;
19761
19762         nl_results = nla_nest_start_noflag(msg,
19763                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19764         if (!nl_results)
19765                 return -EMSGSIZE;
19766
19767         for (i = 0; i < nd->n_matches; i++) {
19768                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19769
19770                 nl_match = nla_nest_start_noflag(msg, i);
19771                 if (!nl_match)
19772                         break;
19773
19774                 /* The SSID attribute is optional in nl80211, but for
19775                  * simplicity reasons it's always present in the
19776                  * cfg80211 structure.  If a driver can't pass the
19777                  * SSID, that needs to be changed.  A zero length SSID
19778                  * is still a valid SSID (wildcard), so it cannot be
19779                  * used for this purpose.
19780                  */
19781                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19782                             match->ssid.ssid)) {
19783                         nla_nest_cancel(msg, nl_match);
19784                         goto out;
19785                 }
19786
19787                 if (match->n_channels) {
19788                         nl_freqs = nla_nest_start_noflag(msg,
19789                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19790                         if (!nl_freqs) {
19791                                 nla_nest_cancel(msg, nl_match);
19792                                 goto out;
19793                         }
19794
19795                         for (j = 0; j < match->n_channels; j++) {
19796                                 if (nla_put_u32(msg, j, match->channels[j])) {
19797                                         nla_nest_cancel(msg, nl_freqs);
19798                                         nla_nest_cancel(msg, nl_match);
19799                                         goto out;
19800                                 }
19801                         }
19802
19803                         nla_nest_end(msg, nl_freqs);
19804                 }
19805
19806                 nla_nest_end(msg, nl_match);
19807         }
19808
19809 out:
19810         nla_nest_end(msg, nl_results);
19811         return 0;
19812 }
19813
19814 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19815                                    struct cfg80211_wowlan_wakeup *wakeup,
19816                                    gfp_t gfp)
19817 {
19818         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19819         struct sk_buff *msg;
19820         void *hdr;
19821         int size = 200;
19822
19823         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19824
19825         if (wakeup)
19826                 size += wakeup->packet_present_len;
19827
19828         msg = nlmsg_new(size, gfp);
19829         if (!msg)
19830                 return;
19831
19832         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19833         if (!hdr)
19834                 goto free_msg;
19835
19836         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19837             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19838                               NL80211_ATTR_PAD))
19839                 goto free_msg;
19840
19841         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19842                                         wdev->netdev->ifindex))
19843                 goto free_msg;
19844
19845         if (wakeup) {
19846                 struct nlattr *reasons;
19847
19848                 reasons = nla_nest_start_noflag(msg,
19849                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19850                 if (!reasons)
19851                         goto free_msg;
19852
19853                 if (wakeup->disconnect &&
19854                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19855                         goto free_msg;
19856                 if (wakeup->magic_pkt &&
19857                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19858                         goto free_msg;
19859                 if (wakeup->gtk_rekey_failure &&
19860                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19861                         goto free_msg;
19862                 if (wakeup->eap_identity_req &&
19863                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19864                         goto free_msg;
19865                 if (wakeup->four_way_handshake &&
19866                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19867                         goto free_msg;
19868                 if (wakeup->rfkill_release &&
19869                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19870                         goto free_msg;
19871
19872                 if (wakeup->pattern_idx >= 0 &&
19873                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19874                                 wakeup->pattern_idx))
19875                         goto free_msg;
19876
19877                 if (wakeup->tcp_match &&
19878                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19879                         goto free_msg;
19880
19881                 if (wakeup->tcp_connlost &&
19882                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19883                         goto free_msg;
19884
19885                 if (wakeup->tcp_nomoretokens &&
19886                     nla_put_flag(msg,
19887                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19888                         goto free_msg;
19889
19890                 if (wakeup->packet) {
19891                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19892                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19893
19894                         if (!wakeup->packet_80211) {
19895                                 pkt_attr =
19896                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19897                                 len_attr =
19898                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19899                         }
19900
19901                         if (wakeup->packet_len &&
19902                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19903                                 goto free_msg;
19904
19905                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19906                                     wakeup->packet))
19907                                 goto free_msg;
19908                 }
19909
19910                 if (wakeup->net_detect &&
19911                     cfg80211_net_detect_results(msg, wakeup))
19912                                 goto free_msg;
19913
19914                 nla_nest_end(msg, reasons);
19915         }
19916
19917         genlmsg_end(msg, hdr);
19918
19919         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19920                                 NL80211_MCGRP_MLME, gfp);
19921         return;
19922
19923  free_msg:
19924         nlmsg_free(msg);
19925 }
19926 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19927 #endif
19928
19929 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19930                                 enum nl80211_tdls_operation oper,
19931                                 u16 reason_code, gfp_t gfp)
19932 {
19933         struct wireless_dev *wdev = dev->ieee80211_ptr;
19934         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19935         struct sk_buff *msg;
19936         void *hdr;
19937
19938         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19939                                          reason_code);
19940
19941         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19942         if (!msg)
19943                 return;
19944
19945         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19946         if (!hdr) {
19947                 nlmsg_free(msg);
19948                 return;
19949         }
19950
19951         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19952             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19953             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19954             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19955             (reason_code > 0 &&
19956              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19957                 goto nla_put_failure;
19958
19959         genlmsg_end(msg, hdr);
19960
19961         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19962                                 NL80211_MCGRP_MLME, gfp);
19963         return;
19964
19965  nla_put_failure:
19966         nlmsg_free(msg);
19967 }
19968 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19969
19970 static int nl80211_netlink_notify(struct notifier_block * nb,
19971                                   unsigned long state,
19972                                   void *_notify)
19973 {
19974         struct netlink_notify *notify = _notify;
19975         struct cfg80211_registered_device *rdev;
19976         struct wireless_dev *wdev;
19977         struct cfg80211_beacon_registration *reg, *tmp;
19978
19979         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19980                 return NOTIFY_DONE;
19981
19982         rcu_read_lock();
19983
19984         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19985                 struct cfg80211_sched_scan_request *sched_scan_req;
19986
19987                 list_for_each_entry_rcu(sched_scan_req,
19988                                         &rdev->sched_scan_req_list,
19989                                         list) {
19990                         if (sched_scan_req->owner_nlportid == notify->portid) {
19991                                 sched_scan_req->nl_owner_dead = true;
19992                                 wiphy_work_queue(&rdev->wiphy,
19993                                                  &rdev->sched_scan_stop_wk);
19994                         }
19995                 }
19996
19997                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19998                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19999
20000                         if (wdev->owner_nlportid == notify->portid) {
20001                                 wdev->nl_owner_dead = true;
20002                                 schedule_work(&rdev->destroy_work);
20003                         } else if (wdev->conn_owner_nlportid == notify->portid) {
20004                                 schedule_work(&wdev->disconnect_wk);
20005                         }
20006
20007                         cfg80211_release_pmsr(wdev, notify->portid);
20008                 }
20009
20010                 spin_lock_bh(&rdev->beacon_registrations_lock);
20011                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
20012                                          list) {
20013                         if (reg->nlportid == notify->portid) {
20014                                 list_del(&reg->list);
20015                                 kfree(reg);
20016                                 break;
20017                         }
20018                 }
20019                 spin_unlock_bh(&rdev->beacon_registrations_lock);
20020         }
20021
20022         rcu_read_unlock();
20023
20024         /*
20025          * It is possible that the user space process that is controlling the
20026          * indoor setting disappeared, so notify the regulatory core.
20027          */
20028         regulatory_netlink_notify(notify->portid);
20029         return NOTIFY_OK;
20030 }
20031
20032 static struct notifier_block nl80211_netlink_notifier = {
20033         .notifier_call = nl80211_netlink_notify,
20034 };
20035
20036 void cfg80211_ft_event(struct net_device *netdev,
20037                        struct cfg80211_ft_event_params *ft_event)
20038 {
20039         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20040         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20041         struct sk_buff *msg;
20042         void *hdr;
20043
20044         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
20045
20046         if (!ft_event->target_ap)
20047                 return;
20048
20049         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
20050                         GFP_KERNEL);
20051         if (!msg)
20052                 return;
20053
20054         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
20055         if (!hdr)
20056                 goto out;
20057
20058         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20059             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20060             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
20061                 goto out;
20062
20063         if (ft_event->ies &&
20064             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
20065                 goto out;
20066         if (ft_event->ric_ies &&
20067             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
20068                     ft_event->ric_ies))
20069                 goto out;
20070
20071         genlmsg_end(msg, hdr);
20072
20073         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20074                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20075         return;
20076  out:
20077         nlmsg_free(msg);
20078 }
20079 EXPORT_SYMBOL(cfg80211_ft_event);
20080
20081 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
20082 {
20083         struct cfg80211_registered_device *rdev;
20084         struct sk_buff *msg;
20085         void *hdr;
20086         u32 nlportid;
20087
20088         rdev = wiphy_to_rdev(wdev->wiphy);
20089         if (!rdev->crit_proto_nlportid)
20090                 return;
20091
20092         nlportid = rdev->crit_proto_nlportid;
20093         rdev->crit_proto_nlportid = 0;
20094
20095         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20096         if (!msg)
20097                 return;
20098
20099         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
20100         if (!hdr)
20101                 goto nla_put_failure;
20102
20103         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20104             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20105                               NL80211_ATTR_PAD))
20106                 goto nla_put_failure;
20107
20108         genlmsg_end(msg, hdr);
20109
20110         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
20111         return;
20112
20113  nla_put_failure:
20114         nlmsg_free(msg);
20115 }
20116 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
20117
20118 void nl80211_send_ap_stopped(struct wireless_dev *wdev, unsigned int link_id)
20119 {
20120         struct wiphy *wiphy = wdev->wiphy;
20121         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20122         struct sk_buff *msg;
20123         void *hdr;
20124
20125         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
20126         if (!msg)
20127                 return;
20128
20129         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
20130         if (!hdr)
20131                 goto out;
20132
20133         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20134             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
20135             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
20136                               NL80211_ATTR_PAD) ||
20137             (wdev->valid_links &&
20138              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id)))
20139                 goto out;
20140
20141         genlmsg_end(msg, hdr);
20142
20143         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
20144                                 NL80211_MCGRP_MLME, GFP_KERNEL);
20145         return;
20146  out:
20147         nlmsg_free(msg);
20148 }
20149
20150 int cfg80211_external_auth_request(struct net_device *dev,
20151                                    struct cfg80211_external_auth_params *params,
20152                                    gfp_t gfp)
20153 {
20154         struct wireless_dev *wdev = dev->ieee80211_ptr;
20155         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
20156         struct sk_buff *msg;
20157         void *hdr;
20158
20159         if (!wdev->conn_owner_nlportid)
20160                 return -EINVAL;
20161
20162         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20163         if (!msg)
20164                 return -ENOMEM;
20165
20166         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
20167         if (!hdr)
20168                 goto nla_put_failure;
20169
20170         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20171             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
20172             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
20173             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
20174                         params->action) ||
20175             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
20176             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
20177                     params->ssid.ssid) ||
20178             (!is_zero_ether_addr(params->mld_addr) &&
20179              nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN, params->mld_addr)))
20180                 goto nla_put_failure;
20181
20182         genlmsg_end(msg, hdr);
20183         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
20184                         wdev->conn_owner_nlportid);
20185         return 0;
20186
20187  nla_put_failure:
20188         nlmsg_free(msg);
20189         return -ENOBUFS;
20190 }
20191 EXPORT_SYMBOL(cfg80211_external_auth_request);
20192
20193 void cfg80211_update_owe_info_event(struct net_device *netdev,
20194                                     struct cfg80211_update_owe_info *owe_info,
20195                                     gfp_t gfp)
20196 {
20197         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
20198         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
20199         struct sk_buff *msg;
20200         void *hdr;
20201
20202         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
20203
20204         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
20205         if (!msg)
20206                 return;
20207
20208         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
20209         if (!hdr)
20210                 goto nla_put_failure;
20211
20212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
20213             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
20214             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
20215                 goto nla_put_failure;
20216
20217         if (!owe_info->ie_len ||
20218             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
20219                 goto nla_put_failure;
20220
20221         if (owe_info->assoc_link_id != -1) {
20222                 if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID,
20223                                owe_info->assoc_link_id))
20224                         goto nla_put_failure;
20225
20226                 if (!is_zero_ether_addr(owe_info->peer_mld_addr) &&
20227                     nla_put(msg, NL80211_ATTR_MLD_ADDR, ETH_ALEN,
20228                             owe_info->peer_mld_addr))
20229                         goto nla_put_failure;
20230         }
20231
20232         genlmsg_end(msg, hdr);
20233
20234         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
20235                                 NL80211_MCGRP_MLME, gfp);
20236         return;
20237
20238 nla_put_failure:
20239         genlmsg_cancel(msg, hdr);
20240         nlmsg_free(msg);
20241 }
20242 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
20243
20244 void cfg80211_schedule_channels_check(struct wireless_dev *wdev)
20245 {
20246         struct wiphy *wiphy = wdev->wiphy;
20247
20248         /* Schedule channels check if NO_IR or DFS relaxations are supported */
20249         if (wdev->iftype == NL80211_IFTYPE_STATION &&
20250             (wiphy_ext_feature_isset(wiphy,
20251                                      NL80211_EXT_FEATURE_DFS_CONCURRENT) ||
20252             (IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) &&
20253              wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR)))
20254                 reg_check_channels();
20255 }
20256 EXPORT_SYMBOL(cfg80211_schedule_channels_check);
20257
20258 /* initialisation/exit functions */
20259
20260 int __init nl80211_init(void)
20261 {
20262         int err;
20263
20264         err = genl_register_family(&nl80211_fam);
20265         if (err)
20266                 return err;
20267
20268         err = netlink_register_notifier(&nl80211_netlink_notifier);
20269         if (err)
20270                 goto err_out;
20271
20272         return 0;
20273  err_out:
20274         genl_unregister_family(&nl80211_fam);
20275         return err;
20276 }
20277
20278 void nl80211_exit(void)
20279 {
20280         netlink_unregister_notifier(&nl80211_netlink_notifier);
20281         genl_unregister_family(&nl80211_fam);
20282 }