net/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) 2018-2022 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         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 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 };
 327
 328 static const struct nla_policy
 329 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 330         [NL80211_PMSR_TYPE_FTM] =
 331                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 332 };
 333
 334 static const struct nla_policy
 335 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 336         [NL80211_PMSR_REQ_ATTR_DATA] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 338         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 344         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 345         [NL80211_PMSR_PEER_ATTR_REQ] =
 346                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 347         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 348 };
 349
 350 static const struct nla_policy
 351 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 352         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 353         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 354         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 355         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 356         [NL80211_PMSR_ATTR_PEERS] =
 357                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 358 };
 359
 360 static const struct nla_policy
 361 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 362         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 363                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 364         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 365                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 366         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 367                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 368         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 369                 NLA_POLICY_EXACT_LEN(8),
 370         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 371                 NLA_POLICY_EXACT_LEN(8),
 372         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 373 };
 374
 375 static const struct nla_policy
 376 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 377         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 378         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 379         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 380 };
 381
 382 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 383         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 384                                     .len = NL80211_MAX_SUPP_RATES },
 385         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 386                                 .len = NL80211_MAX_SUPP_HT_RATES },
 387         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 388         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 389         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 390         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 391                                                    NL80211_RATE_INFO_HE_GI_0_8,
 392                                                    NL80211_RATE_INFO_HE_GI_3_2),
 393         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 394                                                    NL80211_RATE_INFO_HE_1XLTF,
 395                                                    NL80211_RATE_INFO_HE_4XLTF),
 396 };
 397
 398 static const struct nla_policy
 399 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 400         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 401         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 402         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 403         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 404         [NL80211_TID_CONFIG_ATTR_NOACK] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 406         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 407         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 408         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 409                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 410         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 411                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 412         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 413                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 414         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 415                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 416         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 417                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 422         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 423         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 424         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 425                         NLA_POLICY_RANGE(NLA_BINARY,
 426                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 427                                          IEEE80211_MAX_DATA_LEN),
 428 };
 429
 430 static const struct nla_policy
 431 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 432         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 433         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 434                                                        .len = IEEE80211_MAX_DATA_LEN }
 435 };
 436
 437 static const struct nla_policy
 438 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 439         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 440         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 441 };
 442
 443 static const struct nla_policy
 444 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 445         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 446         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
 451         [NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES] = NLA_POLICY_MIN(NLA_U8, 2),
 452         [NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY] =
 453                                                 NLA_POLICY_MIN(NLA_U8, 1),
 454         [NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
 455         [NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
 456         [NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
 457 };
 458
 459 static const struct nla_policy
 460 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
 461         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
 462         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
 463 };
 464
 465 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 466         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 467         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 468         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 469                                       .len = 20-1 },
 470         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 471
 472         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 473         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 474         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 475                                                 NL80211_EDMG_CHANNELS_MIN,
 476                                                 NL80211_EDMG_CHANNELS_MAX),
 477         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 478                                                 NL80211_EDMG_BW_CONFIG_MIN,
 479                                                 NL80211_EDMG_BW_CONFIG_MAX),
 480
 481         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 482         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 483         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 484         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 485
 486         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 487         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 488         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 489         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 490         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 491         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 492
 493         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 494         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 495         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 496
 497         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 498         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 499
 500         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 501         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 502                                     .len = WLAN_MAX_KEY_LEN },
 503         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 504         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 505         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 507         [NL80211_ATTR_KEY_TYPE] =
 508                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 509
 510         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 511         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 512         [NL80211_ATTR_BEACON_HEAD] =
 513                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 514                                        IEEE80211_MAX_DATA_LEN),
 515         [NL80211_ATTR_BEACON_TAIL] =
 516                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 517                                        IEEE80211_MAX_DATA_LEN),
 518         [NL80211_ATTR_STA_AID] =
 519                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 520         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 521         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 522         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 523                                                .len = NL80211_MAX_SUPP_RATES },
 524         [NL80211_ATTR_STA_PLINK_ACTION] =
 525                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 526         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 527                 NLA_POLICY_RANGE(NLA_U8,
 528                                  NL80211_TX_POWER_AUTOMATIC,
 529                                  NL80211_TX_POWER_FIXED),
 530         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 531         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 532         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 533         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 534                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 535         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 536
 537         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 538         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 539         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 540
 541         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 542         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 543         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 544         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 545                                            .len = NL80211_MAX_SUPP_RATES },
 546         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 547
 548         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 550
 551         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 552
 553         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 554         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 555                                                    validate_ie_attr,
 556                                                    IEEE80211_MAX_DATA_LEN),
 557         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 558         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 559
 560         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 561                                 .len = IEEE80211_MAX_SSID_LEN },
 562         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 563         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 564         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 565         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 567                                                   NL80211_MFP_NO,
 568                                                   NL80211_MFP_OPTIONAL),
 569         [NL80211_ATTR_STA_FLAGS2] =
 570                 NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_sta_flag_update)),
 571         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 573         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 577         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 578         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 579         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 580         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 581         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 582         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 583         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 584         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 585         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 586                                  .len = IEEE80211_MAX_DATA_LEN },
 587         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 588         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 589                                                    NL80211_PS_DISABLED,
 590                                                    NL80211_PS_ENABLED),
 591         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 592         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 593         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 594         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 595         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 596         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 597         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 598         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 599         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 600         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 602         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 603         [NL80211_ATTR_STA_PLINK_STATE] =
 604                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 605         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_MESH_PEER_AID] =
 608                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 609         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 610         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 611         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 612         [NL80211_ATTR_HIDDEN_SSID] =
 613                 NLA_POLICY_RANGE(NLA_U32,
 614                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 615                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 616         [NL80211_ATTR_IE_PROBE_RESP] =
 617                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 618                                        IEEE80211_MAX_DATA_LEN),
 619         [NL80211_ATTR_IE_ASSOC_RESP] =
 620                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 621                                        IEEE80211_MAX_DATA_LEN),
 622         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_STA_WME] = NLA_POLICY_NESTED(nl80211_sta_wme_policy),
 624         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 625         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 626         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 627         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 628         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 629         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 630         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 632         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 633         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 634                                       .len = IEEE80211_MAX_DATA_LEN },
 635         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 636         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 638                 .len = NL80211_HT_CAPABILITY_LEN
 639         },
 640         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 641         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 642         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 643         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 644         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 645
 646         /* need to include at least Auth Transaction and Status Code */
 647         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 648
 649         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 650         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 651         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 652         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 653         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 654                 NLA_POLICY_RANGE(NLA_U32,
 655                                  NL80211_MESH_POWER_UNKNOWN + 1,
 656                                  NL80211_MESH_POWER_MAX),
 657         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 658         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 659         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 660         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 661         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 663         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 664                 .len = NL80211_VHT_CAPABILITY_LEN,
 665         },
 666         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 667         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 668                                   .len = IEEE80211_MAX_DATA_LEN },
 669         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 670         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 671                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 672         [NL80211_ATTR_PEER_AID] =
 673                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 674         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 675         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 676         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 677         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 678         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 679         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 680         /*
 681          * The value of the Length field of the Supported Operating
 682          * Classes element is between 2 and 253.
 683          */
 684         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 685                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 686         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 687         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 688         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 689         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 690         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 691         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 692                                                   IEEE80211_QOS_MAP_LEN_MIN,
 693                                                   IEEE80211_QOS_MAP_LEN_MAX),
 694         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 695         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 696         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 697         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 698         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 699         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 700         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 701         [NL80211_ATTR_USER_PRIO] =
 702                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 703         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 704         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 705         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 706         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 707         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 709         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 710         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 712         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 713         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 714                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 715         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 716                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 717         },
 718         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 719         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 720         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 721         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 722         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 723                                     .len = FILS_MAX_KEK_LEN },
 724         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 725         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 726         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 727         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 728         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 729                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 730         },
 731         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 732         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 733                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 734         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 735                                           .len = FILS_ERP_MAX_REALM_LEN },
 736         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 737         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 738                                         .len = FILS_ERP_MAX_RRK_LEN },
 739         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 740         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 741         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 742         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 743         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 744
 745         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 746         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 747         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 748         [NL80211_ATTR_HE_CAPABILITY] =
 749                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_he_capa,
 750                                        NL80211_HE_MAX_CAPABILITY_LEN),
 751         [NL80211_ATTR_FTM_RESPONDER] =
 752                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 753         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 754         [NL80211_ATTR_PEER_MEASUREMENTS] =
 755                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 756         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 757         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 758                                         .len = SAE_PASSWORD_MAX_LEN },
 759         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 760         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 761         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 762         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 763         [NL80211_ATTR_TID_CONFIG] =
 764                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 765         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 766         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 767         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 768         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 769         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 770         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 771         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 772                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 773         [NL80211_ATTR_FILS_DISCOVERY] =
 774                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 775         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 776                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 777         [NL80211_ATTR_S1G_CAPABILITY] =
 778                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 779         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 780                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 781         [NL80211_ATTR_SAE_PWE] =
 782                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 783                                  NL80211_SAE_PWE_BOTH),
 784         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 785         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 786         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 787         [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
 788         [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
 789         [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
 790         [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
 791         [NL80211_ATTR_MBSSID_CONFIG] =
 792                         NLA_POLICY_NESTED(nl80211_mbssid_config_policy),
 793         [NL80211_ATTR_MBSSID_ELEMS] = { .type = NLA_NESTED },
 794         [NL80211_ATTR_RADAR_BACKGROUND] = { .type = NLA_FLAG },
 795         [NL80211_ATTR_AP_SETTINGS_FLAGS] = { .type = NLA_U32 },
 796         [NL80211_ATTR_EHT_CAPABILITY] =
 797                 NLA_POLICY_RANGE(NLA_BINARY,
 798                                  NL80211_EHT_MIN_CAPABILITY_LEN,
 799                                  NL80211_EHT_MAX_CAPABILITY_LEN),
 800         [NL80211_ATTR_DISABLE_EHT] = { .type = NLA_FLAG },
 801         [NL80211_ATTR_MLO_LINKS] =
 802                 NLA_POLICY_NESTED_ARRAY(nl80211_policy),
 803         [NL80211_ATTR_MLO_LINK_ID] =
 804                 NLA_POLICY_RANGE(NLA_U8, 0, IEEE80211_MLD_MAX_NUM_LINKS),
 805         [NL80211_ATTR_MLD_ADDR] = NLA_POLICY_EXACT_LEN(ETH_ALEN),
 806         [NL80211_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
 807         [NL80211_ATTR_MAX_NUM_AKM_SUITES] = { .type = NLA_REJECT },
 808 };
 809
 810 /* policy for the key attributes */
 811 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 812         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 813         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 814         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 815         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 816         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 817         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 818         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 819         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 820         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 821 };
 822
 823 /* policy for the key default flags */
 824 static const struct nla_policy
 825 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 826         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 827         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 828 };
 829
 830 #ifdef CONFIG_PM
 831 /* policy for WoWLAN attributes */
 832 static const struct nla_policy
 833 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 834         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 835         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 836         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 837         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 838         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 839         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 840         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 841         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 842         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 843         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 848         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 849         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 850         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 851         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 852         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 853         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 854         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 855                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 856         },
 857         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 858                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 859         },
 860         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 861         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 862         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 863 };
 864 #endif /* CONFIG_PM */
 865
 866 /* policy for coalesce rule attributes */
 867 static const struct nla_policy
 868 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 869         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 870         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 871                 NLA_POLICY_RANGE(NLA_U32,
 872                                  NL80211_COALESCE_CONDITION_MATCH,
 873                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 874         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 875 };
 876
 877 /* policy for GTK rekey offload attributes */
 878 static const struct nla_policy
 879 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 880         [NL80211_REKEY_DATA_KEK] = {
 881                 .type = NLA_BINARY,
 882                 .len = NL80211_KEK_EXT_LEN
 883         },
 884         [NL80211_REKEY_DATA_KCK] = {
 885                 .type = NLA_BINARY,
 886                 .len = NL80211_KCK_EXT_LEN
 887         },
 888         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 889         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 890 };
 891
 892 static const struct nla_policy
 893 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 894         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 895         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 896         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 897         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 898         [NL80211_BAND_LC]    = { .type = NLA_S32 },
 899 };
 900
 901 static const struct nla_policy
 902 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 903         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 904                                                  .len = IEEE80211_MAX_SSID_LEN },
 905         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 906         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 907         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 908                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 909 };
 910
 911 static const struct nla_policy
 912 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 913         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 914         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 915 };
 916
 917 static const struct nla_policy
 918 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 919         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 920         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 921         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 922                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 923         },
 924 };
 925
 926 /* policy for NAN function attributes */
 927 static const struct nla_policy
 928 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 929         [NL80211_NAN_FUNC_TYPE] =
 930                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 931         [NL80211_NAN_FUNC_SERVICE_ID] = {
 932                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 933         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 934         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 935         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 936         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 937         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 938         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 939         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 940         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 941         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 942                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 943         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 944         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 945         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 946         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 947         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 948 };
 949
 950 /* policy for Service Response Filter attributes */
 951 static const struct nla_policy
 952 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 953         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 954         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 955                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 956         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 957         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 958 };
 959
 960 /* policy for packet pattern attributes */
 961 static const struct nla_policy
 962 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 963         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 964         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 965         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 966 };
 967
 968 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 969                                      struct cfg80211_registered_device **rdev,
 970                                      struct wireless_dev **wdev,
 971                                      struct nlattr **attrbuf)
 972 {
 973         int err;
 974
 975         if (!cb->args[0]) {
 976                 struct nlattr **attrbuf_free = NULL;
 977
 978                 if (!attrbuf) {
 979                         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 980                                           GFP_KERNEL);
 981                         if (!attrbuf)
 982                                 return -ENOMEM;
 983                         attrbuf_free = attrbuf;
 984                 }
 985
 986                 err = nlmsg_parse_deprecated(cb->nlh,
 987                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 988                                              attrbuf, nl80211_fam.maxattr,
 989                                              nl80211_policy, NULL);
 990                 if (err) {
 991                         kfree(attrbuf_free);
 992                         return err;
 993                 }
 994
 995                 rtnl_lock();
 996                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 997                                                    attrbuf);
 998                 kfree(attrbuf_free);
 999                 if (IS_ERR(*wdev)) {
1000                         rtnl_unlock();
1001                         return PTR_ERR(*wdev);
1002                 }
1003                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
1004                 mutex_lock(&(*rdev)->wiphy.mtx);
1005                 rtnl_unlock();
1006                 /* 0 is the first index - add 1 to parse only once */
1007                 cb->args[0] = (*rdev)->wiphy_idx + 1;
1008                 cb->args[1] = (*wdev)->identifier;
1009         } else {
1010                 /* subtract the 1 again here */
1011                 struct wiphy *wiphy;
1012                 struct wireless_dev *tmp;
1013
1014                 rtnl_lock();
1015                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
1016                 if (!wiphy) {
1017                         rtnl_unlock();
1018                         return -ENODEV;
1019                 }
1020                 *rdev = wiphy_to_rdev(wiphy);
1021                 *wdev = NULL;
1022
1023                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
1024                         if (tmp->identifier == cb->args[1]) {
1025                                 *wdev = tmp;
1026                                 break;
1027                         }
1028                 }
1029
1030                 if (!*wdev) {
1031                         rtnl_unlock();
1032                         return -ENODEV;
1033                 }
1034                 mutex_lock(&(*rdev)->wiphy.mtx);
1035                 rtnl_unlock();
1036         }
1037
1038         return 0;
1039 }
1040
1041 /* message building helper */
1042 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1043                      int flags, u8 cmd)
1044 {
1045         /* since there is no private header just add the generic one */
1046         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
1047 }
1048
1049 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
1050                                      const struct ieee80211_reg_rule *rule)
1051 {
1052         int j;
1053         struct nlattr *nl_wmm_rules =
1054                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1055
1056         if (!nl_wmm_rules)
1057                 goto nla_put_failure;
1058
1059         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1060                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1061
1062                 if (!nl_wmm_rule)
1063                         goto nla_put_failure;
1064
1065                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1066                                 rule->wmm_rule.client[j].cw_min) ||
1067                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1068                                 rule->wmm_rule.client[j].cw_max) ||
1069                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1070                                rule->wmm_rule.client[j].aifsn) ||
1071                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1072                                 rule->wmm_rule.client[j].cot))
1073                         goto nla_put_failure;
1074
1075                 nla_nest_end(msg, nl_wmm_rule);
1076         }
1077         nla_nest_end(msg, nl_wmm_rules);
1078
1079         return 0;
1080
1081 nla_put_failure:
1082         return -ENOBUFS;
1083 }
1084
1085 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1086                                    struct ieee80211_channel *chan,
1087                                    bool large)
1088 {
1089         /* Some channels must be completely excluded from the
1090          * list to protect old user-space tools from breaking
1091          */
1092         if (!large && chan->flags &
1093             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1094                 return 0;
1095         if (!large && chan->freq_offset)
1096                 return 0;
1097
1098         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1099                         chan->center_freq))
1100                 goto nla_put_failure;
1101
1102         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1103                 goto nla_put_failure;
1104
1105         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1106             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1107                 goto nla_put_failure;
1108         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1109                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1110                         goto nla_put_failure;
1111                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1112                         goto nla_put_failure;
1113         }
1114         if (chan->flags & IEEE80211_CHAN_RADAR) {
1115                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1116                         goto nla_put_failure;
1117                 if (large) {
1118                         u32 time;
1119
1120                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1121
1122                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1123                                         chan->dfs_state))
1124                                 goto nla_put_failure;
1125                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1126                                         time))
1127                                 goto nla_put_failure;
1128                         if (nla_put_u32(msg,
1129                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1130                                         chan->dfs_cac_ms))
1131                                 goto nla_put_failure;
1132                 }
1133         }
1134
1135         if (large) {
1136                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1137                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1138                         goto nla_put_failure;
1139                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1140                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1141                         goto nla_put_failure;
1142                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1143                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1144                         goto nla_put_failure;
1145                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1146                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1147                         goto nla_put_failure;
1148                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1149                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1150                         goto nla_put_failure;
1151                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1152                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1153                         goto nla_put_failure;
1154                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1155                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1156                         goto nla_put_failure;
1157                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1158                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1159                         goto nla_put_failure;
1160                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1161                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1162                         goto nla_put_failure;
1163                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1164                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1165                         goto nla_put_failure;
1166                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1167                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1168                         goto nla_put_failure;
1169                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1170                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1171                         goto nla_put_failure;
1172                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1173                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1174                         goto nla_put_failure;
1175                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1176                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1177                         goto nla_put_failure;
1178                 if ((chan->flags & IEEE80211_CHAN_NO_320MHZ) &&
1179                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_320MHZ))
1180                         goto nla_put_failure;
1181                 if ((chan->flags & IEEE80211_CHAN_NO_EHT) &&
1182                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_EHT))
1183                         goto nla_put_failure;
1184         }
1185
1186         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1187                         DBM_TO_MBM(chan->max_power)))
1188                 goto nla_put_failure;
1189
1190         if (large) {
1191                 const struct ieee80211_reg_rule *rule =
1192                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1193
1194                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1195                         if (nl80211_msg_put_wmm_rules(msg, rule))
1196                                 goto nla_put_failure;
1197                 }
1198         }
1199
1200         return 0;
1201
1202  nla_put_failure:
1203         return -ENOBUFS;
1204 }
1205
1206 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1207                                   struct cfg80211_txq_stats *txqstats,
1208                                   int attrtype)
1209 {
1210         struct nlattr *txqattr;
1211
1212 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1213         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1214             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1215                 return false;                                             \
1216         } while (0)
1217
1218         txqattr = nla_nest_start_noflag(msg, attrtype);
1219         if (!txqattr)
1220                 return false;
1221
1222         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1223         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1224         PUT_TXQVAL_U32(FLOWS, flows);
1225         PUT_TXQVAL_U32(DROPS, drops);
1226         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1227         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1228         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1229         PUT_TXQVAL_U32(COLLISIONS, collisions);
1230         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1231         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1232         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1233         nla_nest_end(msg, txqattr);
1234
1235 #undef PUT_TXQVAL_U32
1236         return true;
1237 }
1238
1239 /* netlink command implementations */
1240
1241 /**
1242  * nl80211_link_id - return link ID
1243  * @attrs: attributes to look at
1244  *
1245  * Returns: the link ID or 0 if not given
1246  *
1247  * Note this function doesn't do any validation of the link
1248  * ID validity wrt. links that were actually added, so it must
1249  * be called only from ops with %NL80211_FLAG_MLO_VALID_LINK_ID
1250  * or if additional validation is done.
1251  */
1252 static unsigned int nl80211_link_id(struct nlattr **attrs)
1253 {
1254         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1255
1256         if (!linkid)
1257                 return 0;
1258
1259         return nla_get_u8(linkid);
1260 }
1261
1262 static int nl80211_link_id_or_invalid(struct nlattr **attrs)
1263 {
1264         struct nlattr *linkid = attrs[NL80211_ATTR_MLO_LINK_ID];
1265
1266         if (!linkid)
1267                 return -1;
1268
1269         return nla_get_u8(linkid);
1270 }
1271
1272 struct key_parse {
1273         struct key_params p;
1274         int idx;
1275         int type;
1276         bool def, defmgmt, defbeacon;
1277         bool def_uni, def_multi;
1278 };
1279
1280 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1281                                  struct key_parse *k)
1282 {
1283         struct nlattr *tb[NL80211_KEY_MAX + 1];
1284         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1285                                               nl80211_key_policy,
1286                                               info->extack);
1287         if (err)
1288                 return err;
1289
1290         k->def = !!tb[NL80211_KEY_DEFAULT];
1291         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1292         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1293
1294         if (k->def) {
1295                 k->def_uni = true;
1296                 k->def_multi = true;
1297         }
1298         if (k->defmgmt || k->defbeacon)
1299                 k->def_multi = true;
1300
1301         if (tb[NL80211_KEY_IDX])
1302                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1303
1304         if (tb[NL80211_KEY_DATA]) {
1305                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1306                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1307         }
1308
1309         if (tb[NL80211_KEY_SEQ]) {
1310                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1311                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1312         }
1313
1314         if (tb[NL80211_KEY_CIPHER])
1315                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1316
1317         if (tb[NL80211_KEY_TYPE])
1318                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1319
1320         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1321                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1322
1323                 err = nla_parse_nested_deprecated(kdt,
1324                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1325                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1326                                                   nl80211_key_default_policy,
1327                                                   info->extack);
1328                 if (err)
1329                         return err;
1330
1331                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1332                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1333         }
1334
1335         if (tb[NL80211_KEY_MODE])
1336                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1337
1338         return 0;
1339 }
1340
1341 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1342 {
1343         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1344                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1345                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1346         }
1347
1348         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1349                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1350                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1351         }
1352
1353         if (info->attrs[NL80211_ATTR_KEY_IDX])
1354                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1355
1356         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1357                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1358
1359         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1360         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1361
1362         if (k->def) {
1363                 k->def_uni = true;
1364                 k->def_multi = true;
1365         }
1366         if (k->defmgmt)
1367                 k->def_multi = true;
1368
1369         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1370                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1371
1372         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1373                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1374                 int err = nla_parse_nested_deprecated(kdt,
1375                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1376                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1377                                                       nl80211_key_default_policy,
1378                                                       info->extack);
1379                 if (err)
1380                         return err;
1381
1382                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1383                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1384         }
1385
1386         return 0;
1387 }
1388
1389 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1390 {
1391         int err;
1392
1393         memset(k, 0, sizeof(*k));
1394         k->idx = -1;
1395         k->type = -1;
1396
1397         if (info->attrs[NL80211_ATTR_KEY])
1398                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1399         else
1400                 err = nl80211_parse_key_old(info, k);
1401
1402         if (err)
1403                 return err;
1404
1405         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1406             (k->defbeacon ? 1 : 0) > 1) {
1407                 GENL_SET_ERR_MSG(info,
1408                                  "key with multiple default flags is invalid");
1409                 return -EINVAL;
1410         }
1411
1412         if (k->defmgmt || k->defbeacon) {
1413                 if (k->def_uni || !k->def_multi) {
1414                         GENL_SET_ERR_MSG(info,
1415                                          "defmgmt/defbeacon key must be mcast");
1416                         return -EINVAL;
1417                 }
1418         }
1419
1420         if (k->idx != -1) {
1421                 if (k->defmgmt) {
1422                         if (k->idx < 4 || k->idx > 5) {
1423                                 GENL_SET_ERR_MSG(info,
1424                                                  "defmgmt key idx not 4 or 5");
1425                                 return -EINVAL;
1426                         }
1427                 } else if (k->defbeacon) {
1428                         if (k->idx < 6 || k->idx > 7) {
1429                                 GENL_SET_ERR_MSG(info,
1430                                                  "defbeacon key idx not 6 or 7");
1431                                 return -EINVAL;
1432                         }
1433                 } else if (k->def) {
1434                         if (k->idx < 0 || k->idx > 3) {
1435                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1436                                 return -EINVAL;
1437                         }
1438                 } else {
1439                         if (k->idx < 0 || k->idx > 7) {
1440                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1441                                 return -EINVAL;
1442                         }
1443                 }
1444         }
1445
1446         return 0;
1447 }
1448
1449 static struct cfg80211_cached_keys *
1450 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1451                        struct genl_info *info, bool *no_ht)
1452 {
1453         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1454         struct key_parse parse;
1455         struct nlattr *key;
1456         struct cfg80211_cached_keys *result;
1457         int rem, err, def = 0;
1458         bool have_key = false;
1459
1460         nla_for_each_nested(key, keys, rem) {
1461                 have_key = true;
1462                 break;
1463         }
1464
1465         if (!have_key)
1466                 return NULL;
1467
1468         result = kzalloc(sizeof(*result), GFP_KERNEL);
1469         if (!result)
1470                 return ERR_PTR(-ENOMEM);
1471
1472         result->def = -1;
1473
1474         nla_for_each_nested(key, keys, rem) {
1475                 memset(&parse, 0, sizeof(parse));
1476                 parse.idx = -1;
1477
1478                 err = nl80211_parse_key_new(info, key, &parse);
1479                 if (err)
1480                         goto error;
1481                 err = -EINVAL;
1482                 if (!parse.p.key)
1483                         goto error;
1484                 if (parse.idx < 0 || parse.idx > 3) {
1485                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1486                         goto error;
1487                 }
1488                 if (parse.def) {
1489                         if (def) {
1490                                 GENL_SET_ERR_MSG(info,
1491                                                  "only one key can be default");
1492                                 goto error;
1493                         }
1494                         def = 1;
1495                         result->def = parse.idx;
1496                         if (!parse.def_uni || !parse.def_multi)
1497                                 goto error;
1498                 } else if (parse.defmgmt)
1499                         goto error;
1500                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1501                                                      parse.idx, false, NULL);
1502                 if (err)
1503                         goto error;
1504                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1505                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1506                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1507                         err = -EINVAL;
1508                         goto error;
1509                 }
1510                 result->params[parse.idx].cipher = parse.p.cipher;
1511                 result->params[parse.idx].key_len = parse.p.key_len;
1512                 result->params[parse.idx].key = result->data[parse.idx];
1513                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1514
1515                 /* must be WEP key if we got here */
1516                 if (no_ht)
1517                         *no_ht = true;
1518         }
1519
1520         if (result->def < 0) {
1521                 err = -EINVAL;
1522                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1523                 goto error;
1524         }
1525
1526         return result;
1527  error:
1528         kfree(result);
1529         return ERR_PTR(err);
1530 }
1531
1532 static int nl80211_key_allowed(struct wireless_dev *wdev)
1533 {
1534         ASSERT_WDEV_LOCK(wdev);
1535
1536         switch (wdev->iftype) {
1537         case NL80211_IFTYPE_AP:
1538         case NL80211_IFTYPE_AP_VLAN:
1539         case NL80211_IFTYPE_P2P_GO:
1540         case NL80211_IFTYPE_MESH_POINT:
1541                 break;
1542         case NL80211_IFTYPE_ADHOC:
1543                 if (wdev->u.ibss.current_bss)
1544                         return 0;
1545                 return -ENOLINK;
1546         case NL80211_IFTYPE_STATION:
1547         case NL80211_IFTYPE_P2P_CLIENT:
1548                 if (wdev->connected)
1549                         return 0;
1550                 return -ENOLINK;
1551         case NL80211_IFTYPE_UNSPECIFIED:
1552         case NL80211_IFTYPE_OCB:
1553         case NL80211_IFTYPE_MONITOR:
1554         case NL80211_IFTYPE_NAN:
1555         case NL80211_IFTYPE_P2P_DEVICE:
1556         case NL80211_IFTYPE_WDS:
1557         case NUM_NL80211_IFTYPES:
1558                 return -EINVAL;
1559         }
1560
1561         return 0;
1562 }
1563
1564 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1565                                                         u32 freq)
1566 {
1567         struct ieee80211_channel *chan;
1568
1569         chan = ieee80211_get_channel_khz(wiphy, freq);
1570         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1571                 return NULL;
1572         return chan;
1573 }
1574
1575 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1576 {
1577         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1578         int i;
1579
1580         if (!nl_modes)
1581                 goto nla_put_failure;
1582
1583         i = 0;
1584         while (ifmodes) {
1585                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1586                         goto nla_put_failure;
1587                 ifmodes >>= 1;
1588                 i++;
1589         }
1590
1591         nla_nest_end(msg, nl_modes);
1592         return 0;
1593
1594 nla_put_failure:
1595         return -ENOBUFS;
1596 }
1597
1598 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1599                                           struct sk_buff *msg,
1600                                           bool large)
1601 {
1602         struct nlattr *nl_combis;
1603         int i, j;
1604
1605         nl_combis = nla_nest_start_noflag(msg,
1606                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1607         if (!nl_combis)
1608                 goto nla_put_failure;
1609
1610         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1611                 const struct ieee80211_iface_combination *c;
1612                 struct nlattr *nl_combi, *nl_limits;
1613
1614                 c = &wiphy->iface_combinations[i];
1615
1616                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1617                 if (!nl_combi)
1618                         goto nla_put_failure;
1619
1620                 nl_limits = nla_nest_start_noflag(msg,
1621                                                   NL80211_IFACE_COMB_LIMITS);
1622                 if (!nl_limits)
1623                         goto nla_put_failure;
1624
1625                 for (j = 0; j < c->n_limits; j++) {
1626                         struct nlattr *nl_limit;
1627
1628                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1629                         if (!nl_limit)
1630                                 goto nla_put_failure;
1631                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1632                                         c->limits[j].max))
1633                                 goto nla_put_failure;
1634                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1635                                                 c->limits[j].types))
1636                                 goto nla_put_failure;
1637                         nla_nest_end(msg, nl_limit);
1638                 }
1639
1640                 nla_nest_end(msg, nl_limits);
1641
1642                 if (c->beacon_int_infra_match &&
1643                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1644                         goto nla_put_failure;
1645                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1646                                 c->num_different_channels) ||
1647                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1648                                 c->max_interfaces))
1649                         goto nla_put_failure;
1650                 if (large &&
1651                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1652                                 c->radar_detect_widths) ||
1653                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1654                                 c->radar_detect_regions)))
1655                         goto nla_put_failure;
1656                 if (c->beacon_int_min_gcd &&
1657                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1658                                 c->beacon_int_min_gcd))
1659                         goto nla_put_failure;
1660
1661                 nla_nest_end(msg, nl_combi);
1662         }
1663
1664         nla_nest_end(msg, nl_combis);
1665
1666         return 0;
1667 nla_put_failure:
1668         return -ENOBUFS;
1669 }
1670
1671 #ifdef CONFIG_PM
1672 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1673                                         struct sk_buff *msg)
1674 {
1675         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1676         struct nlattr *nl_tcp;
1677
1678         if (!tcp)
1679                 return 0;
1680
1681         nl_tcp = nla_nest_start_noflag(msg,
1682                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1683         if (!nl_tcp)
1684                 return -ENOBUFS;
1685
1686         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1687                         tcp->data_payload_max))
1688                 return -ENOBUFS;
1689
1690         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1691                         tcp->data_payload_max))
1692                 return -ENOBUFS;
1693
1694         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1695                 return -ENOBUFS;
1696
1697         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1698                                 sizeof(*tcp->tok), tcp->tok))
1699                 return -ENOBUFS;
1700
1701         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1702                         tcp->data_interval_max))
1703                 return -ENOBUFS;
1704
1705         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1706                         tcp->wake_payload_max))
1707                 return -ENOBUFS;
1708
1709         nla_nest_end(msg, nl_tcp);
1710         return 0;
1711 }
1712
1713 static int nl80211_send_wowlan(struct sk_buff *msg,
1714                                struct cfg80211_registered_device *rdev,
1715                                bool large)
1716 {
1717         struct nlattr *nl_wowlan;
1718
1719         if (!rdev->wiphy.wowlan)
1720                 return 0;
1721
1722         nl_wowlan = nla_nest_start_noflag(msg,
1723                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1724         if (!nl_wowlan)
1725                 return -ENOBUFS;
1726
1727         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1728              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1729             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1730              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1731             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1732              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1733             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1734              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1735             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1736              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1737             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1738              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1739             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1740              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1741             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1742              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1743                 return -ENOBUFS;
1744
1745         if (rdev->wiphy.wowlan->n_patterns) {
1746                 struct nl80211_pattern_support pat = {
1747                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1748                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1749                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1750                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1751                 };
1752
1753                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1754                             sizeof(pat), &pat))
1755                         return -ENOBUFS;
1756         }
1757
1758         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1759             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1760                         rdev->wiphy.wowlan->max_nd_match_sets))
1761                 return -ENOBUFS;
1762
1763         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1764                 return -ENOBUFS;
1765
1766         nla_nest_end(msg, nl_wowlan);
1767
1768         return 0;
1769 }
1770 #endif
1771
1772 static int nl80211_send_coalesce(struct sk_buff *msg,
1773                                  struct cfg80211_registered_device *rdev)
1774 {
1775         struct nl80211_coalesce_rule_support rule;
1776
1777         if (!rdev->wiphy.coalesce)
1778                 return 0;
1779
1780         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1781         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1782         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1783         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1784         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1785         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1786
1787         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1788                 return -ENOBUFS;
1789
1790         return 0;
1791 }
1792
1793 static int
1794 nl80211_send_iftype_data(struct sk_buff *msg,
1795                          const struct ieee80211_supported_band *sband,
1796                          const struct ieee80211_sband_iftype_data *iftdata)
1797 {
1798         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1799         const struct ieee80211_sta_eht_cap *eht_cap = &iftdata->eht_cap;
1800
1801         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1802                                 iftdata->types_mask))
1803                 return -ENOBUFS;
1804
1805         if (he_cap->has_he) {
1806                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1807                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1808                             he_cap->he_cap_elem.mac_cap_info) ||
1809                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1810                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1811                             he_cap->he_cap_elem.phy_cap_info) ||
1812                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1813                             sizeof(he_cap->he_mcs_nss_supp),
1814                             &he_cap->he_mcs_nss_supp) ||
1815                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1816                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1817                         return -ENOBUFS;
1818         }
1819
1820         if (eht_cap->has_eht && he_cap->has_he) {
1821                 u8 mcs_nss_size, ppe_thresh_size;
1822                 u16 ppe_thres_hdr;
1823                 bool is_ap;
1824
1825                 is_ap = iftdata->types_mask & BIT(NL80211_IFTYPE_AP) ||
1826                         iftdata->types_mask & BIT(NL80211_IFTYPE_P2P_GO);
1827
1828                 mcs_nss_size =
1829                         ieee80211_eht_mcs_nss_size(&he_cap->he_cap_elem,
1830                                                    &eht_cap->eht_cap_elem,
1831                                                    is_ap);
1832
1833                 ppe_thres_hdr = get_unaligned_le16(&eht_cap->eht_ppe_thres[0]);
1834                 ppe_thresh_size =
1835                         ieee80211_eht_ppe_size(ppe_thres_hdr,
1836                                                eht_cap->eht_cap_elem.phy_cap_info);
1837
1838                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MAC,
1839                             sizeof(eht_cap->eht_cap_elem.mac_cap_info),
1840                             eht_cap->eht_cap_elem.mac_cap_info) ||
1841                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PHY,
1842                             sizeof(eht_cap->eht_cap_elem.phy_cap_info),
1843                             eht_cap->eht_cap_elem.phy_cap_info) ||
1844                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_MCS_SET,
1845                             mcs_nss_size, &eht_cap->eht_mcs_nss_supp) ||
1846                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_EHT_CAP_PPE,
1847                             ppe_thresh_size, eht_cap->eht_ppe_thres))
1848                         return -ENOBUFS;
1849         }
1850
1851         if (sband->band == NL80211_BAND_6GHZ &&
1852             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1853                     sizeof(iftdata->he_6ghz_capa),
1854                     &iftdata->he_6ghz_capa))
1855                 return -ENOBUFS;
1856
1857         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1858             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1859                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1860                 return -ENOBUFS;
1861
1862         return 0;
1863 }
1864
1865 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1866                                       struct ieee80211_supported_band *sband,
1867                                       bool large)
1868 {
1869         struct nlattr *nl_rates, *nl_rate;
1870         struct ieee80211_rate *rate;
1871         int i;
1872
1873         /* add HT info */
1874         if (sband->ht_cap.ht_supported &&
1875             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1876                      sizeof(sband->ht_cap.mcs),
1877                      &sband->ht_cap.mcs) ||
1878              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1879                          sband->ht_cap.cap) ||
1880              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1881                         sband->ht_cap.ampdu_factor) ||
1882              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1883                         sband->ht_cap.ampdu_density)))
1884                 return -ENOBUFS;
1885
1886         /* add VHT info */
1887         if (sband->vht_cap.vht_supported &&
1888             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1889                      sizeof(sband->vht_cap.vht_mcs),
1890                      &sband->vht_cap.vht_mcs) ||
1891              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1892                          sband->vht_cap.cap)))
1893                 return -ENOBUFS;
1894
1895         if (large && sband->n_iftype_data) {
1896                 struct nlattr *nl_iftype_data =
1897                         nla_nest_start_noflag(msg,
1898                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1899                 int err;
1900
1901                 if (!nl_iftype_data)
1902                         return -ENOBUFS;
1903
1904                 for (i = 0; i < sband->n_iftype_data; i++) {
1905                         struct nlattr *iftdata;
1906
1907                         iftdata = nla_nest_start_noflag(msg, i + 1);
1908                         if (!iftdata)
1909                                 return -ENOBUFS;
1910
1911                         err = nl80211_send_iftype_data(msg, sband,
1912                                                        &sband->iftype_data[i]);
1913                         if (err)
1914                                 return err;
1915
1916                         nla_nest_end(msg, iftdata);
1917                 }
1918
1919                 nla_nest_end(msg, nl_iftype_data);
1920         }
1921
1922         /* add EDMG info */
1923         if (large && sband->edmg_cap.channels &&
1924             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1925                        sband->edmg_cap.channels) ||
1926             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1927                        sband->edmg_cap.bw_config)))
1928
1929                 return -ENOBUFS;
1930
1931         /* add bitrates */
1932         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1933         if (!nl_rates)
1934                 return -ENOBUFS;
1935
1936         for (i = 0; i < sband->n_bitrates; i++) {
1937                 nl_rate = nla_nest_start_noflag(msg, i);
1938                 if (!nl_rate)
1939                         return -ENOBUFS;
1940
1941                 rate = &sband->bitrates[i];
1942                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1943                                 rate->bitrate))
1944                         return -ENOBUFS;
1945                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1946                     nla_put_flag(msg,
1947                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1948                         return -ENOBUFS;
1949
1950                 nla_nest_end(msg, nl_rate);
1951         }
1952
1953         nla_nest_end(msg, nl_rates);
1954
1955         return 0;
1956 }
1957
1958 static int
1959 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1960                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1961 {
1962         u16 stypes;
1963         struct nlattr *nl_ftypes, *nl_ifs;
1964         enum nl80211_iftype ift;
1965         int i;
1966
1967         if (!mgmt_stypes)
1968                 return 0;
1969
1970         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1971         if (!nl_ifs)
1972                 return -ENOBUFS;
1973
1974         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1975                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1976                 if (!nl_ftypes)
1977                         return -ENOBUFS;
1978                 i = 0;
1979                 stypes = mgmt_stypes[ift].tx;
1980                 while (stypes) {
1981                         if ((stypes & 1) &&
1982                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1983                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1984                                 return -ENOBUFS;
1985                         stypes >>= 1;
1986                         i++;
1987                 }
1988                 nla_nest_end(msg, nl_ftypes);
1989         }
1990
1991         nla_nest_end(msg, nl_ifs);
1992
1993         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1994         if (!nl_ifs)
1995                 return -ENOBUFS;
1996
1997         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1998                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1999                 if (!nl_ftypes)
2000                         return -ENOBUFS;
2001                 i = 0;
2002                 stypes = mgmt_stypes[ift].rx;
2003                 while (stypes) {
2004                         if ((stypes & 1) &&
2005                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
2006                                         (i << 4) | IEEE80211_FTYPE_MGMT))
2007                                 return -ENOBUFS;
2008                         stypes >>= 1;
2009                         i++;
2010                 }
2011                 nla_nest_end(msg, nl_ftypes);
2012         }
2013         nla_nest_end(msg, nl_ifs);
2014
2015         return 0;
2016 }
2017
2018 #define CMD(op, n)                                                      \
2019          do {                                                           \
2020                 if (rdev->ops->op) {                                    \
2021                         i++;                                            \
2022                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
2023                                 goto nla_put_failure;                   \
2024                 }                                                       \
2025         } while (0)
2026
2027 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
2028                                         struct sk_buff *msg)
2029 {
2030         int i = 0;
2031
2032         /*
2033          * do *NOT* add anything into this function, new things need to be
2034          * advertised only to new versions of userspace that can deal with
2035          * the split (and they can't possibly care about new features...
2036          */
2037         CMD(add_virtual_intf, NEW_INTERFACE);
2038         CMD(change_virtual_intf, SET_INTERFACE);
2039         CMD(add_key, NEW_KEY);
2040         CMD(start_ap, START_AP);
2041         CMD(add_station, NEW_STATION);
2042         CMD(add_mpath, NEW_MPATH);
2043         CMD(update_mesh_config, SET_MESH_CONFIG);
2044         CMD(change_bss, SET_BSS);
2045         CMD(auth, AUTHENTICATE);
2046         CMD(assoc, ASSOCIATE);
2047         CMD(deauth, DEAUTHENTICATE);
2048         CMD(disassoc, DISASSOCIATE);
2049         CMD(join_ibss, JOIN_IBSS);
2050         CMD(join_mesh, JOIN_MESH);
2051         CMD(set_pmksa, SET_PMKSA);
2052         CMD(del_pmksa, DEL_PMKSA);
2053         CMD(flush_pmksa, FLUSH_PMKSA);
2054         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
2055                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
2056         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
2057         CMD(mgmt_tx, FRAME);
2058         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
2059         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
2060                 i++;
2061                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
2062                         goto nla_put_failure;
2063         }
2064         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
2065             rdev->ops->join_mesh) {
2066                 i++;
2067                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
2068                         goto nla_put_failure;
2069         }
2070         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
2071                 CMD(tdls_mgmt, TDLS_MGMT);
2072                 CMD(tdls_oper, TDLS_OPER);
2073         }
2074         if (rdev->wiphy.max_sched_scan_reqs)
2075                 CMD(sched_scan_start, START_SCHED_SCAN);
2076         CMD(probe_client, PROBE_CLIENT);
2077         CMD(set_noack_map, SET_NOACK_MAP);
2078         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
2079                 i++;
2080                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
2081                         goto nla_put_failure;
2082         }
2083         CMD(start_p2p_device, START_P2P_DEVICE);
2084         CMD(set_mcast_rate, SET_MCAST_RATE);
2085 #ifdef CONFIG_NL80211_TESTMODE
2086         CMD(testmode_cmd, TESTMODE);
2087 #endif
2088
2089         if (rdev->ops->connect || rdev->ops->auth) {
2090                 i++;
2091                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
2092                         goto nla_put_failure;
2093         }
2094
2095         if (rdev->ops->disconnect || rdev->ops->deauth) {
2096                 i++;
2097                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
2098                         goto nla_put_failure;
2099         }
2100
2101         return i;
2102  nla_put_failure:
2103         return -ENOBUFS;
2104 }
2105
2106 static int
2107 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
2108                            struct sk_buff *msg)
2109 {
2110         struct nlattr *ftm;
2111
2112         if (!cap->ftm.supported)
2113                 return 0;
2114
2115         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
2116         if (!ftm)
2117                 return -ENOBUFS;
2118
2119         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
2120                 return -ENOBUFS;
2121         if (cap->ftm.non_asap &&
2122             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2123                 return -ENOBUFS;
2124         if (cap->ftm.request_lci &&
2125             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2126                 return -ENOBUFS;
2127         if (cap->ftm.request_civicloc &&
2128             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2129                 return -ENOBUFS;
2130         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2131                         cap->ftm.preambles))
2132                 return -ENOBUFS;
2133         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2134                         cap->ftm.bandwidths))
2135                 return -ENOBUFS;
2136         if (cap->ftm.max_bursts_exponent >= 0 &&
2137             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2138                         cap->ftm.max_bursts_exponent))
2139                 return -ENOBUFS;
2140         if (cap->ftm.max_ftms_per_burst &&
2141             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2142                         cap->ftm.max_ftms_per_burst))
2143                 return -ENOBUFS;
2144         if (cap->ftm.trigger_based &&
2145             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2146                 return -ENOBUFS;
2147         if (cap->ftm.non_trigger_based &&
2148             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2149                 return -ENOBUFS;
2150
2151         nla_nest_end(msg, ftm);
2152         return 0;
2153 }
2154
2155 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2156                                   struct sk_buff *msg)
2157 {
2158         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2159         struct nlattr *pmsr, *caps;
2160
2161         if (!cap)
2162                 return 0;
2163
2164         /*
2165          * we don't need to clean up anything here since the caller
2166          * will genlmsg_cancel() if we fail
2167          */
2168
2169         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2170         if (!pmsr)
2171                 return -ENOBUFS;
2172
2173         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2174                 return -ENOBUFS;
2175
2176         if (cap->report_ap_tsf &&
2177             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2178                 return -ENOBUFS;
2179
2180         if (cap->randomize_mac_addr &&
2181             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2182                 return -ENOBUFS;
2183
2184         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2185         if (!caps)
2186                 return -ENOBUFS;
2187
2188         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2189                 return -ENOBUFS;
2190
2191         nla_nest_end(msg, caps);
2192         nla_nest_end(msg, pmsr);
2193
2194         return 0;
2195 }
2196
2197 static int
2198 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2199                               struct sk_buff *msg)
2200 {
2201         int i;
2202         struct nlattr *nested, *nested_akms;
2203         const struct wiphy_iftype_akm_suites *iftype_akms;
2204
2205         if (!rdev->wiphy.num_iftype_akm_suites ||
2206             !rdev->wiphy.iftype_akm_suites)
2207                 return 0;
2208
2209         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2210         if (!nested)
2211                 return -ENOBUFS;
2212
2213         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2214                 nested_akms = nla_nest_start(msg, i + 1);
2215                 if (!nested_akms)
2216                         return -ENOBUFS;
2217
2218                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2219
2220                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2221                                         iftype_akms->iftypes_mask))
2222                         return -ENOBUFS;
2223
2224                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2225                             sizeof(u32) * iftype_akms->n_akm_suites,
2226                             iftype_akms->akm_suites)) {
2227                         return -ENOBUFS;
2228                 }
2229                 nla_nest_end(msg, nested_akms);
2230         }
2231
2232         nla_nest_end(msg, nested);
2233
2234         return 0;
2235 }
2236
2237 static int
2238 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2239                                struct sk_buff *msg)
2240 {
2241         struct nlattr *supp;
2242
2243         if (!rdev->wiphy.tid_config_support.vif &&
2244             !rdev->wiphy.tid_config_support.peer)
2245                 return 0;
2246
2247         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2248         if (!supp)
2249                 return -ENOSPC;
2250
2251         if (rdev->wiphy.tid_config_support.vif &&
2252             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2253                               rdev->wiphy.tid_config_support.vif,
2254                               NL80211_TID_CONFIG_ATTR_PAD))
2255                 goto fail;
2256
2257         if (rdev->wiphy.tid_config_support.peer &&
2258             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2259                               rdev->wiphy.tid_config_support.peer,
2260                               NL80211_TID_CONFIG_ATTR_PAD))
2261                 goto fail;
2262
2263         /* for now we just use the same value ... makes more sense */
2264         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2265                        rdev->wiphy.tid_config_support.max_retry))
2266                 goto fail;
2267         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2268                        rdev->wiphy.tid_config_support.max_retry))
2269                 goto fail;
2270
2271         nla_nest_end(msg, supp);
2272
2273         return 0;
2274 fail:
2275         nla_nest_cancel(msg, supp);
2276         return -ENOBUFS;
2277 }
2278
2279 static int
2280 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2281                       struct sk_buff *msg)
2282 {
2283         struct nlattr *sar_capa, *specs, *sub_freq_range;
2284         u8 num_freq_ranges;
2285         int i;
2286
2287         if (!rdev->wiphy.sar_capa)
2288                 return 0;
2289
2290         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2291
2292         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2293         if (!sar_capa)
2294                 return -ENOSPC;
2295
2296         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2297                 goto fail;
2298
2299         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2300         if (!specs)
2301                 goto fail;
2302
2303         /* report supported freq_ranges */
2304         for (i = 0; i < num_freq_ranges; i++) {
2305                 sub_freq_range = nla_nest_start(msg, i + 1);
2306                 if (!sub_freq_range)
2307                         goto fail;
2308
2309                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2310                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2311                         goto fail;
2312
2313                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2314                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2315                         goto fail;
2316
2317                 nla_nest_end(msg, sub_freq_range);
2318         }
2319
2320         nla_nest_end(msg, specs);
2321         nla_nest_end(msg, sar_capa);
2322
2323         return 0;
2324 fail:
2325         nla_nest_cancel(msg, sar_capa);
2326         return -ENOBUFS;
2327 }
2328
2329 static int nl80211_put_mbssid_support(struct wiphy *wiphy, struct sk_buff *msg)
2330 {
2331         struct nlattr *config;
2332
2333         if (!wiphy->mbssid_max_interfaces)
2334                 return 0;
2335
2336         config = nla_nest_start(msg, NL80211_ATTR_MBSSID_CONFIG);
2337         if (!config)
2338                 return -ENOBUFS;
2339
2340         if (nla_put_u8(msg, NL80211_MBSSID_CONFIG_ATTR_MAX_INTERFACES,
2341                        wiphy->mbssid_max_interfaces))
2342                 goto fail;
2343
2344         if (wiphy->ema_max_profile_periodicity &&
2345             nla_put_u8(msg,
2346                        NL80211_MBSSID_CONFIG_ATTR_MAX_EMA_PROFILE_PERIODICITY,
2347                        wiphy->ema_max_profile_periodicity))
2348                 goto fail;
2349
2350         nla_nest_end(msg, config);
2351         return 0;
2352
2353 fail:
2354         nla_nest_cancel(msg, config);
2355         return -ENOBUFS;
2356 }
2357
2358 struct nl80211_dump_wiphy_state {
2359         s64 filter_wiphy;
2360         long start;
2361         long split_start, band_start, chan_start, capa_start;
2362         bool split;
2363 };
2364
2365 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2366                               enum nl80211_commands cmd,
2367                               struct sk_buff *msg, u32 portid, u32 seq,
2368                               int flags, struct nl80211_dump_wiphy_state *state)
2369 {
2370         void *hdr;
2371         struct nlattr *nl_bands, *nl_band;
2372         struct nlattr *nl_freqs, *nl_freq;
2373         struct nlattr *nl_cmds;
2374         enum nl80211_band band;
2375         struct ieee80211_channel *chan;
2376         int i;
2377         const struct ieee80211_txrx_stypes *mgmt_stypes =
2378                                 rdev->wiphy.mgmt_stypes;
2379         u32 features;
2380
2381         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2382         if (!hdr)
2383                 return -ENOBUFS;
2384
2385         if (WARN_ON(!state))
2386                 return -EINVAL;
2387
2388         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2389             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2390                            wiphy_name(&rdev->wiphy)) ||
2391             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2392                         cfg80211_rdev_list_generation))
2393                 goto nla_put_failure;
2394
2395         if (cmd != NL80211_CMD_NEW_WIPHY)
2396                 goto finish;
2397
2398         switch (state->split_start) {
2399         case 0:
2400                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2401                                rdev->wiphy.retry_short) ||
2402                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2403                                rdev->wiphy.retry_long) ||
2404                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2405                                 rdev->wiphy.frag_threshold) ||
2406                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2407                                 rdev->wiphy.rts_threshold) ||
2408                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2409                                rdev->wiphy.coverage_class) ||
2410                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2411                                rdev->wiphy.max_scan_ssids) ||
2412                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2413                                rdev->wiphy.max_sched_scan_ssids) ||
2414                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2415                                 rdev->wiphy.max_scan_ie_len) ||
2416                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2417                                 rdev->wiphy.max_sched_scan_ie_len) ||
2418                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2419                                rdev->wiphy.max_match_sets))
2420                         goto nla_put_failure;
2421
2422                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2423                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2424                         goto nla_put_failure;
2425                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2426                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2427                         goto nla_put_failure;
2428                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2429                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2430                         goto nla_put_failure;
2431                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2432                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2433                         goto nla_put_failure;
2434                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2435                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2436                         goto nla_put_failure;
2437                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2438                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2439                         goto nla_put_failure;
2440                 state->split_start++;
2441                 if (state->split)
2442                         break;
2443                 fallthrough;
2444         case 1:
2445                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2446                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2447                             rdev->wiphy.cipher_suites))
2448                         goto nla_put_failure;
2449
2450                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2451                                rdev->wiphy.max_num_pmkids))
2452                         goto nla_put_failure;
2453
2454                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2455                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2456                         goto nla_put_failure;
2457
2458                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2459                                 rdev->wiphy.available_antennas_tx) ||
2460                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2461                                 rdev->wiphy.available_antennas_rx))
2462                         goto nla_put_failure;
2463
2464                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2465                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2466                                 rdev->wiphy.probe_resp_offload))
2467                         goto nla_put_failure;
2468
2469                 if ((rdev->wiphy.available_antennas_tx ||
2470                      rdev->wiphy.available_antennas_rx) &&
2471                     rdev->ops->get_antenna) {
2472                         u32 tx_ant = 0, rx_ant = 0;
2473                         int res;
2474
2475                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2476                         if (!res) {
2477                                 if (nla_put_u32(msg,
2478                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2479                                                 tx_ant) ||
2480                                     nla_put_u32(msg,
2481                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2482                                                 rx_ant))
2483                                         goto nla_put_failure;
2484                         }
2485                 }
2486
2487                 state->split_start++;
2488                 if (state->split)
2489                         break;
2490                 fallthrough;
2491         case 2:
2492                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2493                                         rdev->wiphy.interface_modes))
2494                                 goto nla_put_failure;
2495                 state->split_start++;
2496                 if (state->split)
2497                         break;
2498                 fallthrough;
2499         case 3:
2500                 nl_bands = nla_nest_start_noflag(msg,
2501                                                  NL80211_ATTR_WIPHY_BANDS);
2502                 if (!nl_bands)
2503                         goto nla_put_failure;
2504
2505                 for (band = state->band_start;
2506                      band < (state->split ?
2507                                 NUM_NL80211_BANDS :
2508                                 NL80211_BAND_60GHZ + 1);
2509                      band++) {
2510                         struct ieee80211_supported_band *sband;
2511
2512                         /* omit higher bands for ancient software */
2513                         if (band > NL80211_BAND_5GHZ && !state->split)
2514                                 break;
2515
2516                         sband = rdev->wiphy.bands[band];
2517
2518                         if (!sband)
2519                                 continue;
2520
2521                         nl_band = nla_nest_start_noflag(msg, band);
2522                         if (!nl_band)
2523                                 goto nla_put_failure;
2524
2525                         switch (state->chan_start) {
2526                         case 0:
2527                                 if (nl80211_send_band_rateinfo(msg, sband,
2528                                                                state->split))
2529                                         goto nla_put_failure;
2530                                 state->chan_start++;
2531                                 if (state->split)
2532                                         break;
2533                                 fallthrough;
2534                         default:
2535                                 /* add frequencies */
2536                                 nl_freqs = nla_nest_start_noflag(msg,
2537                                                                  NL80211_BAND_ATTR_FREQS);
2538                                 if (!nl_freqs)
2539                                         goto nla_put_failure;
2540
2541                                 for (i = state->chan_start - 1;
2542                                      i < sband->n_channels;
2543                                      i++) {
2544                                         nl_freq = nla_nest_start_noflag(msg,
2545                                                                         i);
2546                                         if (!nl_freq)
2547                                                 goto nla_put_failure;
2548
2549                                         chan = &sband->channels[i];
2550
2551                                         if (nl80211_msg_put_channel(
2552                                                         msg, &rdev->wiphy, chan,
2553                                                         state->split))
2554                                                 goto nla_put_failure;
2555
2556                                         nla_nest_end(msg, nl_freq);
2557                                         if (state->split)
2558                                                 break;
2559                                 }
2560                                 if (i < sband->n_channels)
2561                                         state->chan_start = i + 2;
2562                                 else
2563                                         state->chan_start = 0;
2564                                 nla_nest_end(msg, nl_freqs);
2565                         }
2566
2567                         nla_nest_end(msg, nl_band);
2568
2569                         if (state->split) {
2570                                 /* start again here */
2571                                 if (state->chan_start)
2572                                         band--;
2573                                 break;
2574                         }
2575                 }
2576                 nla_nest_end(msg, nl_bands);
2577
2578                 if (band < NUM_NL80211_BANDS)
2579                         state->band_start = band + 1;
2580                 else
2581                         state->band_start = 0;
2582
2583                 /* if bands & channels are done, continue outside */
2584                 if (state->band_start == 0 && state->chan_start == 0)
2585                         state->split_start++;
2586                 if (state->split)
2587                         break;
2588                 fallthrough;
2589         case 4:
2590                 nl_cmds = nla_nest_start_noflag(msg,
2591                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2592                 if (!nl_cmds)
2593                         goto nla_put_failure;
2594
2595                 i = nl80211_add_commands_unsplit(rdev, msg);
2596                 if (i < 0)
2597                         goto nla_put_failure;
2598                 if (state->split) {
2599                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2600                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2601                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2602                                 CMD(channel_switch, CHANNEL_SWITCH);
2603                         CMD(set_qos_map, SET_QOS_MAP);
2604                         if (rdev->wiphy.features &
2605                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2606                                 CMD(add_tx_ts, ADD_TX_TS);
2607                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2608                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2609                         CMD(update_ft_ies, UPDATE_FT_IES);
2610                         if (rdev->wiphy.sar_capa)
2611                                 CMD(set_sar_specs, SET_SAR_SPECS);
2612                 }
2613 #undef CMD
2614
2615                 nla_nest_end(msg, nl_cmds);
2616                 state->split_start++;
2617                 if (state->split)
2618                         break;
2619                 fallthrough;
2620         case 5:
2621                 if (rdev->ops->remain_on_channel &&
2622                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2623                     nla_put_u32(msg,
2624                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2625                                 rdev->wiphy.max_remain_on_channel_duration))
2626                         goto nla_put_failure;
2627
2628                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2629                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2630                         goto nla_put_failure;
2631
2632                 state->split_start++;
2633                 if (state->split)
2634                         break;
2635                 fallthrough;
2636         case 6:
2637 #ifdef CONFIG_PM
2638                 if (nl80211_send_wowlan(msg, rdev, state->split))
2639                         goto nla_put_failure;
2640                 state->split_start++;
2641                 if (state->split)
2642                         break;
2643 #else
2644                 state->split_start++;
2645 #endif
2646                 fallthrough;
2647         case 7:
2648                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2649                                         rdev->wiphy.software_iftypes))
2650                         goto nla_put_failure;
2651
2652                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2653                                                    state->split))
2654                         goto nla_put_failure;
2655
2656                 state->split_start++;
2657                 if (state->split)
2658                         break;
2659                 fallthrough;
2660         case 8:
2661                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2662                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2663                                 rdev->wiphy.ap_sme_capa))
2664                         goto nla_put_failure;
2665
2666                 features = rdev->wiphy.features;
2667                 /*
2668                  * We can only add the per-channel limit information if the
2669                  * dump is split, otherwise it makes it too big. Therefore
2670                  * only advertise it in that case.
2671                  */
2672                 if (state->split)
2673                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2674                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2675                         goto nla_put_failure;
2676
2677                 if (rdev->wiphy.ht_capa_mod_mask &&
2678                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2679                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2680                             rdev->wiphy.ht_capa_mod_mask))
2681                         goto nla_put_failure;
2682
2683                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2684                     rdev->wiphy.max_acl_mac_addrs &&
2685                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2686                                 rdev->wiphy.max_acl_mac_addrs))
2687                         goto nla_put_failure;
2688
2689                 /*
2690                  * Any information below this point is only available to
2691                  * applications that can deal with it being split. This
2692                  * helps ensure that newly added capabilities don't break
2693                  * older tools by overrunning their buffers.
2694                  *
2695                  * We still increment split_start so that in the split
2696                  * case we'll continue with more data in the next round,
2697                  * but break unconditionally so unsplit data stops here.
2698                  */
2699                 if (state->split)
2700                         state->split_start++;
2701                 else
2702                         state->split_start = 0;
2703                 break;
2704         case 9:
2705                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2706                         goto nla_put_failure;
2707
2708                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2709                                 rdev->wiphy.max_sched_scan_plans) ||
2710                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2711                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2712                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2713                                 rdev->wiphy.max_sched_scan_plan_iterations))
2714                         goto nla_put_failure;
2715
2716                 if (rdev->wiphy.extended_capabilities &&
2717                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2718                              rdev->wiphy.extended_capabilities_len,
2719                              rdev->wiphy.extended_capabilities) ||
2720                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2721                              rdev->wiphy.extended_capabilities_len,
2722                              rdev->wiphy.extended_capabilities_mask)))
2723                         goto nla_put_failure;
2724
2725                 if (rdev->wiphy.vht_capa_mod_mask &&
2726                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2727                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2728                             rdev->wiphy.vht_capa_mod_mask))
2729                         goto nla_put_failure;
2730
2731                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2732                             rdev->wiphy.perm_addr))
2733                         goto nla_put_failure;
2734
2735                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2736                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2737                             rdev->wiphy.addr_mask))
2738                         goto nla_put_failure;
2739
2740                 if (rdev->wiphy.n_addresses > 1) {
2741                         void *attr;
2742
2743                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2744                         if (!attr)
2745                                 goto nla_put_failure;
2746
2747                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2748                                 if (nla_put(msg, i + 1, ETH_ALEN,
2749                                             rdev->wiphy.addresses[i].addr))
2750                                         goto nla_put_failure;
2751
2752                         nla_nest_end(msg, attr);
2753                 }
2754
2755                 state->split_start++;
2756                 break;
2757         case 10:
2758                 if (nl80211_send_coalesce(msg, rdev))
2759                         goto nla_put_failure;
2760
2761                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2762                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2763                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2764                         goto nla_put_failure;
2765
2766                 if (rdev->wiphy.max_ap_assoc_sta &&
2767                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2768                                 rdev->wiphy.max_ap_assoc_sta))
2769                         goto nla_put_failure;
2770
2771                 state->split_start++;
2772                 break;
2773         case 11:
2774                 if (rdev->wiphy.n_vendor_commands) {
2775                         const struct nl80211_vendor_cmd_info *info;
2776                         struct nlattr *nested;
2777
2778                         nested = nla_nest_start_noflag(msg,
2779                                                        NL80211_ATTR_VENDOR_DATA);
2780                         if (!nested)
2781                                 goto nla_put_failure;
2782
2783                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2784                                 info = &rdev->wiphy.vendor_commands[i].info;
2785                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2786                                         goto nla_put_failure;
2787                         }
2788                         nla_nest_end(msg, nested);
2789                 }
2790
2791                 if (rdev->wiphy.n_vendor_events) {
2792                         const struct nl80211_vendor_cmd_info *info;
2793                         struct nlattr *nested;
2794
2795                         nested = nla_nest_start_noflag(msg,
2796                                                        NL80211_ATTR_VENDOR_EVENTS);
2797                         if (!nested)
2798                                 goto nla_put_failure;
2799
2800                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2801                                 info = &rdev->wiphy.vendor_events[i];
2802                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2803                                         goto nla_put_failure;
2804                         }
2805                         nla_nest_end(msg, nested);
2806                 }
2807                 state->split_start++;
2808                 break;
2809         case 12:
2810                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2811                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2812                                rdev->wiphy.max_num_csa_counters))
2813                         goto nla_put_failure;
2814
2815                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2816                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2817                         goto nla_put_failure;
2818
2819                 if (rdev->wiphy.max_sched_scan_reqs &&
2820                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2821                                 rdev->wiphy.max_sched_scan_reqs))
2822                         goto nla_put_failure;
2823
2824                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2825                             sizeof(rdev->wiphy.ext_features),
2826                             rdev->wiphy.ext_features))
2827                         goto nla_put_failure;
2828
2829                 if (rdev->wiphy.bss_select_support) {
2830                         struct nlattr *nested;
2831                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2832
2833                         nested = nla_nest_start_noflag(msg,
2834                                                        NL80211_ATTR_BSS_SELECT);
2835                         if (!nested)
2836                                 goto nla_put_failure;
2837
2838                         i = 0;
2839                         while (bss_select_support) {
2840                                 if ((bss_select_support & 1) &&
2841                                     nla_put_flag(msg, i))
2842                                         goto nla_put_failure;
2843                                 i++;
2844                                 bss_select_support >>= 1;
2845                         }
2846                         nla_nest_end(msg, nested);
2847                 }
2848
2849                 state->split_start++;
2850                 break;
2851         case 13:
2852                 if (rdev->wiphy.num_iftype_ext_capab &&
2853                     rdev->wiphy.iftype_ext_capab) {
2854                         struct nlattr *nested_ext_capab, *nested;
2855
2856                         nested = nla_nest_start_noflag(msg,
2857                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2858                         if (!nested)
2859                                 goto nla_put_failure;
2860
2861                         for (i = state->capa_start;
2862                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2863                                 const struct wiphy_iftype_ext_capab *capab;
2864
2865                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2866
2867                                 nested_ext_capab = nla_nest_start_noflag(msg,
2868                                                                          i);
2869                                 if (!nested_ext_capab ||
2870                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2871                                                 capab->iftype) ||
2872                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2873                                             capab->extended_capabilities_len,
2874                                             capab->extended_capabilities) ||
2875                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2876                                             capab->extended_capabilities_len,
2877                                             capab->extended_capabilities_mask))
2878                                         goto nla_put_failure;
2879
2880                                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
2881                                     (nla_put_u16(msg,
2882                                                  NL80211_ATTR_EML_CAPABILITY,
2883                                                  capab->eml_capabilities) ||
2884                                      nla_put_u16(msg,
2885                                                  NL80211_ATTR_MLD_CAPA_AND_OPS,
2886                                                  capab->mld_capa_and_ops)))
2887                                         goto nla_put_failure;
2888
2889                                 nla_nest_end(msg, nested_ext_capab);
2890                                 if (state->split)
2891                                         break;
2892                         }
2893                         nla_nest_end(msg, nested);
2894                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2895                                 state->capa_start = i + 1;
2896                                 break;
2897                         }
2898                 }
2899
2900                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2901                                 rdev->wiphy.nan_supported_bands))
2902                         goto nla_put_failure;
2903
2904                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2905                                             NL80211_EXT_FEATURE_TXQS)) {
2906                         struct cfg80211_txq_stats txqstats = {};
2907                         int res;
2908
2909                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2910                         if (!res &&
2911                             !nl80211_put_txq_stats(msg, &txqstats,
2912                                                    NL80211_ATTR_TXQ_STATS))
2913                                 goto nla_put_failure;
2914
2915                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2916                                         rdev->wiphy.txq_limit))
2917                                 goto nla_put_failure;
2918                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2919                                         rdev->wiphy.txq_memory_limit))
2920                                 goto nla_put_failure;
2921                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2922                                         rdev->wiphy.txq_quantum))
2923                                 goto nla_put_failure;
2924                 }
2925
2926                 state->split_start++;
2927                 break;
2928         case 14:
2929                 if (nl80211_send_pmsr_capa(rdev, msg))
2930                         goto nla_put_failure;
2931
2932                 state->split_start++;
2933                 break;
2934         case 15:
2935                 if (rdev->wiphy.akm_suites &&
2936                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2937                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2938                             rdev->wiphy.akm_suites))
2939                         goto nla_put_failure;
2940
2941                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2942                         goto nla_put_failure;
2943
2944                 if (nl80211_put_tid_config_support(rdev, msg))
2945                         goto nla_put_failure;
2946                 state->split_start++;
2947                 break;
2948         case 16:
2949                 if (nl80211_put_sar_specs(rdev, msg))
2950                         goto nla_put_failure;
2951
2952                 if (nl80211_put_mbssid_support(&rdev->wiphy, msg))
2953                         goto nla_put_failure;
2954
2955                 if (nla_put_u16(msg, NL80211_ATTR_MAX_NUM_AKM_SUITES,
2956                                 rdev->wiphy.max_num_akm_suites))
2957                         goto nla_put_failure;
2958
2959                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO)
2960                         nla_put_flag(msg, NL80211_ATTR_MLO_SUPPORT);
2961
2962                 /* done */
2963                 state->split_start = 0;
2964                 break;
2965         }
2966  finish:
2967         genlmsg_end(msg, hdr);
2968         return 0;
2969
2970  nla_put_failure:
2971         genlmsg_cancel(msg, hdr);
2972         return -EMSGSIZE;
2973 }
2974
2975 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2976                                     struct netlink_callback *cb,
2977                                     struct nl80211_dump_wiphy_state *state)
2978 {
2979         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2980         int ret;
2981
2982         if (!tb)
2983                 return -ENOMEM;
2984
2985         ret = nlmsg_parse_deprecated(cb->nlh,
2986                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2987                                      tb, nl80211_fam.maxattr,
2988                                      nl80211_policy, NULL);
2989         /* ignore parse errors for backward compatibility */
2990         if (ret) {
2991                 ret = 0;
2992                 goto out;
2993         }
2994
2995         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2996         if (tb[NL80211_ATTR_WIPHY])
2997                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2998         if (tb[NL80211_ATTR_WDEV])
2999                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
3000         if (tb[NL80211_ATTR_IFINDEX]) {
3001                 struct net_device *netdev;
3002                 struct cfg80211_registered_device *rdev;
3003                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
3004
3005                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
3006                 if (!netdev) {
3007                         ret = -ENODEV;
3008                         goto out;
3009                 }
3010                 if (netdev->ieee80211_ptr) {
3011                         rdev = wiphy_to_rdev(
3012                                 netdev->ieee80211_ptr->wiphy);
3013                         state->filter_wiphy = rdev->wiphy_idx;
3014                 }
3015         }
3016
3017         ret = 0;
3018 out:
3019         kfree(tb);
3020         return ret;
3021 }
3022
3023 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
3024 {
3025         int idx = 0, ret;
3026         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
3027         struct cfg80211_registered_device *rdev;
3028
3029         rtnl_lock();
3030         if (!state) {
3031                 state = kzalloc(sizeof(*state), GFP_KERNEL);
3032                 if (!state) {
3033                         rtnl_unlock();
3034                         return -ENOMEM;
3035                 }
3036                 state->filter_wiphy = -1;
3037                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
3038                 if (ret) {
3039                         kfree(state);
3040                         rtnl_unlock();
3041                         return ret;
3042                 }
3043                 cb->args[0] = (long)state;
3044         }
3045
3046         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3047                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3048                         continue;
3049                 if (++idx <= state->start)
3050                         continue;
3051                 if (state->filter_wiphy != -1 &&
3052                     state->filter_wiphy != rdev->wiphy_idx)
3053                         continue;
3054                 /* attempt to fit multiple wiphy data chunks into the skb */
3055                 do {
3056                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
3057                                                  skb,
3058                                                  NETLINK_CB(cb->skb).portid,
3059                                                  cb->nlh->nlmsg_seq,
3060                                                  NLM_F_MULTI, state);
3061                         if (ret < 0) {
3062                                 /*
3063                                  * If sending the wiphy data didn't fit (ENOBUFS
3064                                  * or EMSGSIZE returned), this SKB is still
3065                                  * empty (so it's not too big because another
3066                                  * wiphy dataset is already in the skb) and
3067                                  * we've not tried to adjust the dump allocation
3068                                  * yet ... then adjust the alloc size to be
3069                                  * bigger, and return 1 but with the empty skb.
3070                                  * This results in an empty message being RX'ed
3071                                  * in userspace, but that is ignored.
3072                                  *
3073                                  * We can then retry with the larger buffer.
3074                                  */
3075                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
3076                                     !skb->len && !state->split &&
3077                                     cb->min_dump_alloc < 4096) {
3078                                         cb->min_dump_alloc = 4096;
3079                                         state->split_start = 0;
3080                                         rtnl_unlock();
3081                                         return 1;
3082                                 }
3083                                 idx--;
3084                                 break;
3085                         }
3086                 } while (state->split_start > 0);
3087                 break;
3088         }
3089         rtnl_unlock();
3090
3091         state->start = idx;
3092
3093         return skb->len;
3094 }
3095
3096 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
3097 {
3098         kfree((void *)cb->args[0]);
3099         return 0;
3100 }
3101
3102 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
3103 {
3104         struct sk_buff *msg;
3105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3106         struct nl80211_dump_wiphy_state state = {};
3107
3108         msg = nlmsg_new(4096, GFP_KERNEL);
3109         if (!msg)
3110                 return -ENOMEM;
3111
3112         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
3113                                info->snd_portid, info->snd_seq, 0,
3114                                &state) < 0) {
3115                 nlmsg_free(msg);
3116                 return -ENOBUFS;
3117         }
3118
3119         return genlmsg_reply(msg, info);
3120 }
3121
3122 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
3123         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
3124         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
3125         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
3126         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
3127         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
3128 };
3129
3130 static int parse_txq_params(struct nlattr *tb[],
3131                             struct ieee80211_txq_params *txq_params)
3132 {
3133         u8 ac;
3134
3135         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
3136             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
3137             !tb[NL80211_TXQ_ATTR_AIFS])
3138                 return -EINVAL;
3139
3140         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
3141         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
3142         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
3143         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
3144         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
3145
3146         if (ac >= NL80211_NUM_ACS)
3147                 return -EINVAL;
3148         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
3149         return 0;
3150 }
3151
3152 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
3153 {
3154         /*
3155          * You can only set the channel explicitly for some interfaces,
3156          * most have their channel managed via their respective
3157          * "establish a connection" command (connect, join, ...)
3158          *
3159          * For AP/GO and mesh mode, the channel can be set with the
3160          * channel userspace API, but is only stored and passed to the
3161          * low-level driver when the AP starts or the mesh is joined.
3162          * This is for backward compatibility, userspace can also give
3163          * the channel in the start-ap or join-mesh commands instead.
3164          *
3165          * Monitors are special as they are normally slaved to
3166          * whatever else is going on, so they have their own special
3167          * operation to set the monitor channel if possible.
3168          */
3169         return !wdev ||
3170                 wdev->iftype == NL80211_IFTYPE_AP ||
3171                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3172                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3173                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3174 }
3175
3176 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3177                           struct genl_info *info,
3178                           struct cfg80211_chan_def *chandef)
3179 {
3180         struct netlink_ext_ack *extack = info->extack;
3181         struct nlattr **attrs = info->attrs;
3182         u32 control_freq;
3183
3184         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3185                 return -EINVAL;
3186
3187         control_freq = MHZ_TO_KHZ(
3188                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3189         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3190                 control_freq +=
3191                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3192
3193         memset(chandef, 0, sizeof(*chandef));
3194         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3195         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3196         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3197         chandef->freq1_offset = control_freq % 1000;
3198         chandef->center_freq2 = 0;
3199
3200         /* Primary channel not allowed */
3201         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3202                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3203                                     "Channel is disabled");
3204                 return -EINVAL;
3205         }
3206
3207         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3208                 enum nl80211_channel_type chantype;
3209
3210                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3211
3212                 switch (chantype) {
3213                 case NL80211_CHAN_NO_HT:
3214                 case NL80211_CHAN_HT20:
3215                 case NL80211_CHAN_HT40PLUS:
3216                 case NL80211_CHAN_HT40MINUS:
3217                         cfg80211_chandef_create(chandef, chandef->chan,
3218                                                 chantype);
3219                         /* user input for center_freq is incorrect */
3220                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3221                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3222                                 NL_SET_ERR_MSG_ATTR(extack,
3223                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3224                                                     "bad center frequency 1");
3225                                 return -EINVAL;
3226                         }
3227                         /* center_freq2 must be zero */
3228                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3229                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3230                                 NL_SET_ERR_MSG_ATTR(extack,
3231                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3232                                                     "center frequency 2 can't be used");
3233                                 return -EINVAL;
3234                         }
3235                         break;
3236                 default:
3237                         NL_SET_ERR_MSG_ATTR(extack,
3238                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3239                                             "invalid channel type");
3240                         return -EINVAL;
3241                 }
3242         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3243                 chandef->width =
3244                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3245                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
3246                         /* User input error for channel width doesn't match channel  */
3247                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
3248                                 NL_SET_ERR_MSG_ATTR(extack,
3249                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
3250                                                     "bad channel width");
3251                                 return -EINVAL;
3252                         }
3253                 }
3254                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3255                         chandef->center_freq1 =
3256                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3257                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3258                                 chandef->freq1_offset = nla_get_u32(
3259                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3260                         else
3261                                 chandef->freq1_offset = 0;
3262                 }
3263                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3264                         chandef->center_freq2 =
3265                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3266         }
3267
3268         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3269                 chandef->edmg.channels =
3270                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3271
3272                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3273                         chandef->edmg.bw_config =
3274                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3275         } else {
3276                 chandef->edmg.bw_config = 0;
3277                 chandef->edmg.channels = 0;
3278         }
3279
3280         if (!cfg80211_chandef_valid(chandef)) {
3281                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3282                 return -EINVAL;
3283         }
3284
3285         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3286                                      IEEE80211_CHAN_DISABLED)) {
3287                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3288                 return -EINVAL;
3289         }
3290
3291         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3292              chandef->width == NL80211_CHAN_WIDTH_10) &&
3293             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3294                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3295                 return -EINVAL;
3296         }
3297
3298         return 0;
3299 }
3300
3301 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3302                                  struct net_device *dev,
3303                                  struct genl_info *info,
3304                                  int _link_id)
3305 {
3306         struct cfg80211_chan_def chandef;
3307         int result;
3308         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3309         struct wireless_dev *wdev = NULL;
3310         int link_id = _link_id;
3311
3312         if (dev)
3313                 wdev = dev->ieee80211_ptr;
3314         if (!nl80211_can_set_dev_channel(wdev))
3315                 return -EOPNOTSUPP;
3316         if (wdev)
3317                 iftype = wdev->iftype;
3318
3319         if (link_id < 0) {
3320                 if (wdev && wdev->valid_links)
3321                         return -EINVAL;
3322                 link_id = 0;
3323         }
3324
3325         result = nl80211_parse_chandef(rdev, info, &chandef);
3326         if (result)
3327                 return result;
3328
3329         switch (iftype) {
3330         case NL80211_IFTYPE_AP:
3331         case NL80211_IFTYPE_P2P_GO:
3332                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3333                                                    iftype))
3334                         return -EINVAL;
3335                 if (wdev->links[link_id].ap.beacon_interval) {
3336                         struct ieee80211_channel *cur_chan;
3337
3338                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3339                             !(rdev->wiphy.features &
3340                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE))
3341                                 return -EBUSY;
3342
3343                         /* Only allow dynamic channel width changes */
3344                         cur_chan = wdev->links[link_id].ap.chandef.chan;
3345                         if (chandef.chan != cur_chan)
3346                                 return -EBUSY;
3347
3348                         result = rdev_set_ap_chanwidth(rdev, dev, link_id,
3349                                                        &chandef);
3350                         if (result)
3351                                 return result;
3352                         wdev->links[link_id].ap.chandef = chandef;
3353                 } else {
3354                         wdev->u.ap.preset_chandef = chandef;
3355                 }
3356                 return 0;
3357         case NL80211_IFTYPE_MESH_POINT:
3358                 return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3359         case NL80211_IFTYPE_MONITOR:
3360                 return cfg80211_set_monitor_channel(rdev, &chandef);
3361         default:
3362                 break;
3363         }
3364
3365         return -EINVAL;
3366 }
3367
3368 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3369 {
3370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3371         int link_id = nl80211_link_id_or_invalid(info->attrs);
3372         struct net_device *netdev = info->user_ptr[1];
3373         int ret;
3374
3375         wdev_lock(netdev->ieee80211_ptr);
3376         ret = __nl80211_set_channel(rdev, netdev, info, link_id);
3377         wdev_unlock(netdev->ieee80211_ptr);
3378
3379         return ret;
3380 }
3381
3382 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3383 {
3384         struct cfg80211_registered_device *rdev = NULL;
3385         struct net_device *netdev = NULL;
3386         struct wireless_dev *wdev;
3387         int result = 0, rem_txq_params = 0;
3388         struct nlattr *nl_txq_params;
3389         u32 changed;
3390         u8 retry_short = 0, retry_long = 0;
3391         u32 frag_threshold = 0, rts_threshold = 0;
3392         u8 coverage_class = 0;
3393         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3394
3395         rtnl_lock();
3396         /*
3397          * Try to find the wiphy and netdev. Normally this
3398          * function shouldn't need the netdev, but this is
3399          * done for backward compatibility -- previously
3400          * setting the channel was done per wiphy, but now
3401          * it is per netdev. Previous userland like hostapd
3402          * also passed a netdev to set_wiphy, so that it is
3403          * possible to let that go to the right netdev!
3404          */
3405
3406         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3407                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3408
3409                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3410                 if (netdev && netdev->ieee80211_ptr)
3411                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3412                 else
3413                         netdev = NULL;
3414         }
3415
3416         if (!netdev) {
3417                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3418                                                   info->attrs);
3419                 if (IS_ERR(rdev)) {
3420                         rtnl_unlock();
3421                         return PTR_ERR(rdev);
3422                 }
3423                 wdev = NULL;
3424                 netdev = NULL;
3425                 result = 0;
3426         } else
3427                 wdev = netdev->ieee80211_ptr;
3428
3429         wiphy_lock(&rdev->wiphy);
3430
3431         /*
3432          * end workaround code, by now the rdev is available
3433          * and locked, and wdev may or may not be NULL.
3434          */
3435
3436         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3437                 result = cfg80211_dev_rename(
3438                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3439         rtnl_unlock();
3440
3441         if (result)
3442                 goto out;
3443
3444         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3445                 struct ieee80211_txq_params txq_params;
3446                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3447
3448                 if (!rdev->ops->set_txq_params) {
3449                         result = -EOPNOTSUPP;
3450                         goto out;
3451                 }
3452
3453                 if (!netdev) {
3454                         result = -EINVAL;
3455                         goto out;
3456                 }
3457
3458                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3459                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3460                         result = -EINVAL;
3461                         goto out;
3462                 }
3463
3464                 if (!netif_running(netdev)) {
3465                         result = -ENETDOWN;
3466                         goto out;
3467                 }
3468
3469                 nla_for_each_nested(nl_txq_params,
3470                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3471                                     rem_txq_params) {
3472                         result = nla_parse_nested_deprecated(tb,
3473                                                              NL80211_TXQ_ATTR_MAX,
3474                                                              nl_txq_params,
3475                                                              txq_params_policy,
3476                                                              info->extack);
3477                         if (result)
3478                                 goto out;
3479                         result = parse_txq_params(tb, &txq_params);
3480                         if (result)
3481                                 goto out;
3482
3483                         txq_params.link_id =
3484                                 nl80211_link_id_or_invalid(info->attrs);
3485
3486                         wdev_lock(netdev->ieee80211_ptr);
3487                         if (txq_params.link_id >= 0 &&
3488                             !(netdev->ieee80211_ptr->valid_links &
3489                               BIT(txq_params.link_id)))
3490                                 result = -ENOLINK;
3491                         else if (txq_params.link_id >= 0 &&
3492                                  !netdev->ieee80211_ptr->valid_links)
3493                                 result = -EINVAL;
3494                         else
3495                                 result = rdev_set_txq_params(rdev, netdev,
3496                                                              &txq_params);
3497                         wdev_unlock(netdev->ieee80211_ptr);
3498                         if (result)
3499                                 goto out;
3500                 }
3501         }
3502
3503         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3504                 int link_id = nl80211_link_id_or_invalid(info->attrs);
3505
3506                 if (wdev) {
3507                         wdev_lock(wdev);
3508                         result = __nl80211_set_channel(
3509                                 rdev,
3510                                 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3511                                 info, link_id);
3512                         wdev_unlock(wdev);
3513                 } else {
3514                         result = __nl80211_set_channel(rdev, netdev, info, link_id);
3515                 }
3516
3517                 if (result)
3518                         goto out;
3519         }
3520
3521         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3522                 struct wireless_dev *txp_wdev = wdev;
3523                 enum nl80211_tx_power_setting type;
3524                 int idx, mbm = 0;
3525
3526                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3527                         txp_wdev = NULL;
3528
3529                 if (!rdev->ops->set_tx_power) {
3530                         result = -EOPNOTSUPP;
3531                         goto out;
3532                 }
3533
3534                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3535                 type = nla_get_u32(info->attrs[idx]);
3536
3537                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3538                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3539                         result = -EINVAL;
3540                         goto out;
3541                 }
3542
3543                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3544                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3545                         mbm = nla_get_u32(info->attrs[idx]);
3546                 }
3547
3548                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3549                 if (result)
3550                         goto out;
3551         }
3552
3553         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3554             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3555                 u32 tx_ant, rx_ant;
3556
3557                 if ((!rdev->wiphy.available_antennas_tx &&
3558                      !rdev->wiphy.available_antennas_rx) ||
3559                     !rdev->ops->set_antenna) {
3560                         result = -EOPNOTSUPP;
3561                         goto out;
3562                 }
3563
3564                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3565                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3566
3567                 /* reject antenna configurations which don't match the
3568                  * available antenna masks, except for the "all" mask */
3569                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3570                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3571                         result = -EINVAL;
3572                         goto out;
3573                 }
3574
3575                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3576                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3577
3578                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3579                 if (result)
3580                         goto out;
3581         }
3582
3583         changed = 0;
3584
3585         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3586                 retry_short = nla_get_u8(
3587                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3588
3589                 changed |= WIPHY_PARAM_RETRY_SHORT;
3590         }
3591
3592         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3593                 retry_long = nla_get_u8(
3594                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3595
3596                 changed |= WIPHY_PARAM_RETRY_LONG;
3597         }
3598
3599         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3600                 frag_threshold = nla_get_u32(
3601                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3602                 if (frag_threshold < 256) {
3603                         result = -EINVAL;
3604                         goto out;
3605                 }
3606
3607                 if (frag_threshold != (u32) -1) {
3608                         /*
3609                          * Fragments (apart from the last one) are required to
3610                          * have even length. Make the fragmentation code
3611                          * simpler by stripping LSB should someone try to use
3612                          * odd threshold value.
3613                          */
3614                         frag_threshold &= ~0x1;
3615                 }
3616                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3617         }
3618
3619         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3620                 rts_threshold = nla_get_u32(
3621                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3622                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3623         }
3624
3625         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3626                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3627                         result = -EINVAL;
3628                         goto out;
3629                 }
3630
3631                 coverage_class = nla_get_u8(
3632                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3633                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3634         }
3635
3636         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3637                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3638                         result = -EOPNOTSUPP;
3639                         goto out;
3640                 }
3641
3642                 changed |= WIPHY_PARAM_DYN_ACK;
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3646                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3647                                              NL80211_EXT_FEATURE_TXQS)) {
3648                         result = -EOPNOTSUPP;
3649                         goto out;
3650                 }
3651                 txq_limit = nla_get_u32(
3652                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3653                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3654         }
3655
3656         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3657                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3658                                              NL80211_EXT_FEATURE_TXQS)) {
3659                         result = -EOPNOTSUPP;
3660                         goto out;
3661                 }
3662                 txq_memory_limit = nla_get_u32(
3663                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3664                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3668                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3669                                              NL80211_EXT_FEATURE_TXQS)) {
3670                         result = -EOPNOTSUPP;
3671                         goto out;
3672                 }
3673                 txq_quantum = nla_get_u32(
3674                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3675                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3676         }
3677
3678         if (changed) {
3679                 u8 old_retry_short, old_retry_long;
3680                 u32 old_frag_threshold, old_rts_threshold;
3681                 u8 old_coverage_class;
3682                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3683
3684                 if (!rdev->ops->set_wiphy_params) {
3685                         result = -EOPNOTSUPP;
3686                         goto out;
3687                 }
3688
3689                 old_retry_short = rdev->wiphy.retry_short;
3690                 old_retry_long = rdev->wiphy.retry_long;
3691                 old_frag_threshold = rdev->wiphy.frag_threshold;
3692                 old_rts_threshold = rdev->wiphy.rts_threshold;
3693                 old_coverage_class = rdev->wiphy.coverage_class;
3694                 old_txq_limit = rdev->wiphy.txq_limit;
3695                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3696                 old_txq_quantum = rdev->wiphy.txq_quantum;
3697
3698                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3699                         rdev->wiphy.retry_short = retry_short;
3700                 if (changed & WIPHY_PARAM_RETRY_LONG)
3701                         rdev->wiphy.retry_long = retry_long;
3702                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3703                         rdev->wiphy.frag_threshold = frag_threshold;
3704                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3705                         rdev->wiphy.rts_threshold = rts_threshold;
3706                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3707                         rdev->wiphy.coverage_class = coverage_class;
3708                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3709                         rdev->wiphy.txq_limit = txq_limit;
3710                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3711                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3712                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3713                         rdev->wiphy.txq_quantum = txq_quantum;
3714
3715                 result = rdev_set_wiphy_params(rdev, changed);
3716                 if (result) {
3717                         rdev->wiphy.retry_short = old_retry_short;
3718                         rdev->wiphy.retry_long = old_retry_long;
3719                         rdev->wiphy.frag_threshold = old_frag_threshold;
3720                         rdev->wiphy.rts_threshold = old_rts_threshold;
3721                         rdev->wiphy.coverage_class = old_coverage_class;
3722                         rdev->wiphy.txq_limit = old_txq_limit;
3723                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3724                         rdev->wiphy.txq_quantum = old_txq_quantum;
3725                         goto out;
3726                 }
3727         }
3728
3729         result = 0;
3730
3731 out:
3732         wiphy_unlock(&rdev->wiphy);
3733         return result;
3734 }
3735
3736 static int nl80211_send_chandef(struct sk_buff *msg,
3737                                 const struct cfg80211_chan_def *chandef)
3738 {
3739         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3740                 return -EINVAL;
3741
3742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3743                         chandef->chan->center_freq))
3744                 return -ENOBUFS;
3745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3746                         chandef->chan->freq_offset))
3747                 return -ENOBUFS;
3748         switch (chandef->width) {
3749         case NL80211_CHAN_WIDTH_20_NOHT:
3750         case NL80211_CHAN_WIDTH_20:
3751         case NL80211_CHAN_WIDTH_40:
3752                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3753                                 cfg80211_get_chandef_type(chandef)))
3754                         return -ENOBUFS;
3755                 break;
3756         default:
3757                 break;
3758         }
3759         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3760                 return -ENOBUFS;
3761         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3762                 return -ENOBUFS;
3763         if (chandef->center_freq2 &&
3764             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3765                 return -ENOBUFS;
3766         return 0;
3767 }
3768
3769 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3770                               struct cfg80211_registered_device *rdev,
3771                               struct wireless_dev *wdev,
3772                               enum nl80211_commands cmd)
3773 {
3774         struct net_device *dev = wdev->netdev;
3775         void *hdr;
3776
3777         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3778                 cmd != NL80211_CMD_DEL_INTERFACE &&
3779                 cmd != NL80211_CMD_SET_INTERFACE);
3780
3781         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3782         if (!hdr)
3783                 return -1;
3784
3785         if (dev &&
3786             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3787              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3788                 goto nla_put_failure;
3789
3790         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3791             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3792             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3793                               NL80211_ATTR_PAD) ||
3794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3795             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3796                         rdev->devlist_generation ^
3797                         (cfg80211_rdev_list_generation << 2)) ||
3798             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3799                 goto nla_put_failure;
3800
3801         if (rdev->ops->get_channel && !wdev->valid_links) {
3802                 struct cfg80211_chan_def chandef = {};
3803                 int ret;
3804
3805                 ret = rdev_get_channel(rdev, wdev, 0, &chandef);
3806                 if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3807                         goto nla_put_failure;
3808         }
3809
3810         if (rdev->ops->get_tx_power) {
3811                 int dbm, ret;
3812
3813                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3814                 if (ret == 0 &&
3815                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3816                                 DBM_TO_MBM(dbm)))
3817                         goto nla_put_failure;
3818         }
3819
3820         wdev_lock(wdev);
3821         switch (wdev->iftype) {
3822         case NL80211_IFTYPE_AP:
3823         case NL80211_IFTYPE_P2P_GO:
3824                 if (wdev->u.ap.ssid_len &&
3825                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ap.ssid_len,
3826                             wdev->u.ap.ssid))
3827                         goto nla_put_failure_locked;
3828                 break;
3829         case NL80211_IFTYPE_STATION:
3830         case NL80211_IFTYPE_P2P_CLIENT:
3831                 if (wdev->u.client.ssid_len &&
3832                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.client.ssid_len,
3833                             wdev->u.client.ssid))
3834                         goto nla_put_failure_locked;
3835                 break;
3836         case NL80211_IFTYPE_ADHOC:
3837                 if (wdev->u.ibss.ssid_len &&
3838                     nla_put(msg, NL80211_ATTR_SSID, wdev->u.ibss.ssid_len,
3839                             wdev->u.ibss.ssid))
3840                         goto nla_put_failure_locked;
3841                 break;
3842         default:
3843                 /* nothing */
3844                 break;
3845         }
3846         wdev_unlock(wdev);
3847
3848         if (rdev->ops->get_txq_stats) {
3849                 struct cfg80211_txq_stats txqstats = {};
3850                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3851
3852                 if (ret == 0 &&
3853                     !nl80211_put_txq_stats(msg, &txqstats,
3854                                            NL80211_ATTR_TXQ_STATS))
3855                         goto nla_put_failure;
3856         }
3857
3858         if (wdev->valid_links) {
3859                 unsigned int link_id;
3860                 struct nlattr *links = nla_nest_start(msg,
3861                                                       NL80211_ATTR_MLO_LINKS);
3862
3863                 if (!links)
3864                         goto nla_put_failure;
3865
3866                 for_each_valid_link(wdev, link_id) {
3867                         struct nlattr *link = nla_nest_start(msg, link_id + 1);
3868                         struct cfg80211_chan_def chandef = {};
3869                         int ret;
3870
3871                         if (!link)
3872                                 goto nla_put_failure;
3873
3874                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
3875                                 goto nla_put_failure;
3876                         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
3877                                     wdev->links[link_id].addr))
3878                                 goto nla_put_failure;
3879
3880                         ret = rdev_get_channel(rdev, wdev, link_id, &chandef);
3881                         if (ret == 0 && nl80211_send_chandef(msg, &chandef))
3882                                 goto nla_put_failure;
3883
3884                         nla_nest_end(msg, link);
3885                 }
3886
3887                 nla_nest_end(msg, links);
3888         }
3889
3890         genlmsg_end(msg, hdr);
3891         return 0;
3892
3893  nla_put_failure_locked:
3894         wdev_unlock(wdev);
3895  nla_put_failure:
3896         genlmsg_cancel(msg, hdr);
3897         return -EMSGSIZE;
3898 }
3899
3900 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3901 {
3902         int wp_idx = 0;
3903         int if_idx = 0;
3904         int wp_start = cb->args[0];
3905         int if_start = cb->args[1];
3906         int filter_wiphy = -1;
3907         struct cfg80211_registered_device *rdev;
3908         struct wireless_dev *wdev;
3909         int ret;
3910
3911         rtnl_lock();
3912         if (!cb->args[2]) {
3913                 struct nl80211_dump_wiphy_state state = {
3914                         .filter_wiphy = -1,
3915                 };
3916
3917                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3918                 if (ret)
3919                         goto out_unlock;
3920
3921                 filter_wiphy = state.filter_wiphy;
3922
3923                 /*
3924                  * if filtering, set cb->args[2] to +1 since 0 is the default
3925                  * value needed to determine that parsing is necessary.
3926                  */
3927                 if (filter_wiphy >= 0)
3928                         cb->args[2] = filter_wiphy + 1;
3929                 else
3930                         cb->args[2] = -1;
3931         } else if (cb->args[2] > 0) {
3932                 filter_wiphy = cb->args[2] - 1;
3933         }
3934
3935         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3936                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3937                         continue;
3938                 if (wp_idx < wp_start) {
3939                         wp_idx++;
3940                         continue;
3941                 }
3942
3943                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3944                         continue;
3945
3946                 if_idx = 0;
3947
3948                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3949                         if (if_idx < if_start) {
3950                                 if_idx++;
3951                                 continue;
3952                         }
3953                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3954                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3955                                                rdev, wdev,
3956                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3957                                 goto out;
3958                         }
3959                         if_idx++;
3960                 }
3961
3962                 wp_idx++;
3963         }
3964  out:
3965         cb->args[0] = wp_idx;
3966         cb->args[1] = if_idx;
3967
3968         ret = skb->len;
3969  out_unlock:
3970         rtnl_unlock();
3971
3972         return ret;
3973 }
3974
3975 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3976 {
3977         struct sk_buff *msg;
3978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3979         struct wireless_dev *wdev = info->user_ptr[1];
3980
3981         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3982         if (!msg)
3983                 return -ENOMEM;
3984
3985         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3986                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3987                 nlmsg_free(msg);
3988                 return -ENOBUFS;
3989         }
3990
3991         return genlmsg_reply(msg, info);
3992 }
3993
3994 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3995         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3996         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3997         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3998         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3999         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
4000         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
4001 };
4002
4003 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
4004 {
4005         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
4006         int flag;
4007
4008         *mntrflags = 0;
4009
4010         if (!nla)
4011                 return -EINVAL;
4012
4013         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
4014                 return -EINVAL;
4015
4016         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
4017                 if (flags[flag])
4018                         *mntrflags |= (1<<flag);
4019
4020         *mntrflags |= MONITOR_FLAG_CHANGED;
4021
4022         return 0;
4023 }
4024
4025 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
4026                                      enum nl80211_iftype type,
4027                                      struct genl_info *info,
4028                                      struct vif_params *params)
4029 {
4030         bool change = false;
4031         int err;
4032
4033         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
4034                 if (type != NL80211_IFTYPE_MONITOR)
4035                         return -EINVAL;
4036
4037                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
4038                                           &params->flags);
4039                 if (err)
4040                         return err;
4041
4042                 change = true;
4043         }
4044
4045         if (params->flags & MONITOR_FLAG_ACTIVE &&
4046             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
4047                 return -EOPNOTSUPP;
4048
4049         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
4050                 const u8 *mumimo_groups;
4051                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4052
4053                 if (type != NL80211_IFTYPE_MONITOR)
4054                         return -EINVAL;
4055
4056                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4057                         return -EOPNOTSUPP;
4058
4059                 mumimo_groups =
4060                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
4061
4062                 /* bits 0 and 63 are reserved and must be zero */
4063                 if ((mumimo_groups[0] & BIT(0)) ||
4064                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
4065                         return -EINVAL;
4066
4067                 params->vht_mumimo_groups = mumimo_groups;
4068                 change = true;
4069         }
4070
4071         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
4072                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
4073
4074                 if (type != NL80211_IFTYPE_MONITOR)
4075                         return -EINVAL;
4076
4077                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
4078                         return -EOPNOTSUPP;
4079
4080                 params->vht_mumimo_follow_addr =
4081                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
4082                 change = true;
4083         }
4084
4085         return change ? 1 : 0;
4086 }
4087
4088 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
4089                                struct net_device *netdev, u8 use_4addr,
4090                                enum nl80211_iftype iftype)
4091 {
4092         if (!use_4addr) {
4093                 if (netdev && netif_is_bridge_port(netdev))
4094                         return -EBUSY;
4095                 return 0;
4096         }
4097
4098         switch (iftype) {
4099         case NL80211_IFTYPE_AP_VLAN:
4100                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
4101                         return 0;
4102                 break;
4103         case NL80211_IFTYPE_STATION:
4104                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
4105                         return 0;
4106                 break;
4107         default:
4108                 break;
4109         }
4110
4111         return -EOPNOTSUPP;
4112 }
4113
4114 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
4115 {
4116         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4117         struct vif_params params;
4118         int err;
4119         enum nl80211_iftype otype, ntype;
4120         struct net_device *dev = info->user_ptr[1];
4121         bool change = false;
4122
4123         memset(&params, 0, sizeof(params));
4124
4125         otype = ntype = dev->ieee80211_ptr->iftype;
4126
4127         if (info->attrs[NL80211_ATTR_IFTYPE]) {
4128                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4129                 if (otype != ntype)
4130                         change = true;
4131         }
4132
4133         if (info->attrs[NL80211_ATTR_MESH_ID]) {
4134                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4135
4136                 if (ntype != NL80211_IFTYPE_MESH_POINT)
4137                         return -EINVAL;
4138                 if (netif_running(dev))
4139                         return -EBUSY;
4140
4141                 wdev_lock(wdev);
4142                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4143                              IEEE80211_MAX_MESH_ID_LEN);
4144                 wdev->u.mesh.id_up_len =
4145                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4146                 memcpy(wdev->u.mesh.id,
4147                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4148                        wdev->u.mesh.id_up_len);
4149                 wdev_unlock(wdev);
4150         }
4151
4152         if (info->attrs[NL80211_ATTR_4ADDR]) {
4153                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4154                 change = true;
4155                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
4156                 if (err)
4157                         return err;
4158         } else {
4159                 params.use_4addr = -1;
4160         }
4161
4162         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
4163         if (err < 0)
4164                 return err;
4165         if (err > 0)
4166                 change = true;
4167
4168         if (change)
4169                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
4170         else
4171                 err = 0;
4172
4173         if (!err && params.use_4addr != -1)
4174                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
4175
4176         if (change && !err) {
4177                 struct wireless_dev *wdev = dev->ieee80211_ptr;
4178
4179                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
4180         }
4181
4182         return err;
4183 }
4184
4185 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4186 {
4187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4188         struct vif_params params;
4189         struct wireless_dev *wdev;
4190         struct sk_buff *msg;
4191         int err;
4192         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
4193
4194         memset(&params, 0, sizeof(params));
4195
4196         if (!info->attrs[NL80211_ATTR_IFNAME])
4197                 return -EINVAL;
4198
4199         if (info->attrs[NL80211_ATTR_IFTYPE])
4200                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
4201
4202         if (!rdev->ops->add_virtual_intf)
4203                 return -EOPNOTSUPP;
4204
4205         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
4206              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
4207             info->attrs[NL80211_ATTR_MAC]) {
4208                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
4209                            ETH_ALEN);
4210                 if (!is_valid_ether_addr(params.macaddr))
4211                         return -EADDRNOTAVAIL;
4212         }
4213
4214         if (info->attrs[NL80211_ATTR_4ADDR]) {
4215                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
4216                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
4217                 if (err)
4218                         return err;
4219         }
4220
4221         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
4222                 return -EOPNOTSUPP;
4223
4224         err = nl80211_parse_mon_options(rdev, type, info, &params);
4225         if (err < 0)
4226                 return err;
4227
4228         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4229         if (!msg)
4230                 return -ENOMEM;
4231
4232         wdev = rdev_add_virtual_intf(rdev,
4233                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
4234                                 NET_NAME_USER, type, &params);
4235         if (WARN_ON(!wdev)) {
4236                 nlmsg_free(msg);
4237                 return -EPROTO;
4238         } else if (IS_ERR(wdev)) {
4239                 nlmsg_free(msg);
4240                 return PTR_ERR(wdev);
4241         }
4242
4243         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4244                 wdev->owner_nlportid = info->snd_portid;
4245
4246         switch (type) {
4247         case NL80211_IFTYPE_MESH_POINT:
4248                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4249                         break;
4250                 wdev_lock(wdev);
4251                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4252                              IEEE80211_MAX_MESH_ID_LEN);
4253                 wdev->u.mesh.id_up_len =
4254                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4255                 memcpy(wdev->u.mesh.id,
4256                        nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4257                        wdev->u.mesh.id_up_len);
4258                 wdev_unlock(wdev);
4259                 break;
4260         case NL80211_IFTYPE_NAN:
4261         case NL80211_IFTYPE_P2P_DEVICE:
4262                 /*
4263                  * P2P Device and NAN do not have a netdev, so don't go
4264                  * through the netdev notifier and must be added here
4265                  */
4266                 cfg80211_init_wdev(wdev);
4267                 cfg80211_register_wdev(rdev, wdev);
4268                 break;
4269         default:
4270                 break;
4271         }
4272
4273         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4274                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4275                 nlmsg_free(msg);
4276                 return -ENOBUFS;
4277         }
4278
4279         return genlmsg_reply(msg, info);
4280 }
4281
4282 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4283 {
4284         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4285         int ret;
4286
4287         /* to avoid failing a new interface creation due to pending removal */
4288         cfg80211_destroy_ifaces(rdev);
4289
4290         wiphy_lock(&rdev->wiphy);
4291         ret = _nl80211_new_interface(skb, info);
4292         wiphy_unlock(&rdev->wiphy);
4293
4294         return ret;
4295 }
4296
4297 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4298 {
4299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4300         struct wireless_dev *wdev = info->user_ptr[1];
4301
4302         if (!rdev->ops->del_virtual_intf)
4303                 return -EOPNOTSUPP;
4304
4305         /*
4306          * We hold RTNL, so this is safe, without RTNL opencount cannot
4307          * reach 0, and thus the rdev cannot be deleted.
4308          *
4309          * We need to do it for the dev_close(), since that will call
4310          * the netdev notifiers, and we need to acquire the mutex there
4311          * but don't know if we get there from here or from some other
4312          * place (e.g. "ip link set ... down").
4313          */
4314         mutex_unlock(&rdev->wiphy.mtx);
4315
4316         /*
4317          * If we remove a wireless device without a netdev then clear
4318          * user_ptr[1] so that nl80211_post_doit won't dereference it
4319          * to check if it needs to do dev_put(). Otherwise it crashes
4320          * since the wdev has been freed, unlike with a netdev where
4321          * we need the dev_put() for the netdev to really be freed.
4322          */
4323         if (!wdev->netdev)
4324                 info->user_ptr[1] = NULL;
4325         else
4326                 dev_close(wdev->netdev);
4327
4328         mutex_lock(&rdev->wiphy.mtx);
4329
4330         return cfg80211_remove_virtual_intf(rdev, wdev);
4331 }
4332
4333 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4334 {
4335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4336         struct net_device *dev = info->user_ptr[1];
4337         u16 noack_map;
4338
4339         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4340                 return -EINVAL;
4341
4342         if (!rdev->ops->set_noack_map)
4343                 return -EOPNOTSUPP;
4344
4345         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4346
4347         return rdev_set_noack_map(rdev, dev, noack_map);
4348 }
4349
4350 static int nl80211_validate_key_link_id(struct genl_info *info,
4351                                         struct wireless_dev *wdev,
4352                                         int link_id, bool pairwise)
4353 {
4354         if (pairwise) {
4355                 if (link_id != -1) {
4356                         GENL_SET_ERR_MSG(info,
4357                                          "link ID not allowed for pairwise key");
4358                         return -EINVAL;
4359                 }
4360
4361                 return 0;
4362         }
4363
4364         if (wdev->valid_links) {
4365                 if (link_id == -1) {
4366                         GENL_SET_ERR_MSG(info,
4367                                          "link ID must for MLO group key");
4368                         return -EINVAL;
4369                 }
4370                 if (!(wdev->valid_links & BIT(link_id))) {
4371                         GENL_SET_ERR_MSG(info, "invalid link ID for MLO group key");
4372                         return -EINVAL;
4373                 }
4374         } else if (link_id != -1) {
4375                 GENL_SET_ERR_MSG(info, "link ID not allowed for non-MLO group key");
4376                 return -EINVAL;
4377         }
4378
4379         return 0;
4380 }
4381
4382 struct get_key_cookie {
4383         struct sk_buff *msg;
4384         int error;
4385         int idx;
4386 };
4387
4388 static void get_key_callback(void *c, struct key_params *params)
4389 {
4390         struct nlattr *key;
4391         struct get_key_cookie *cookie = c;
4392
4393         if ((params->key &&
4394              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4395                      params->key_len, params->key)) ||
4396             (params->seq &&
4397              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4398                      params->seq_len, params->seq)) ||
4399             (params->cipher &&
4400              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4401                          params->cipher)))
4402                 goto nla_put_failure;
4403
4404         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4405         if (!key)
4406                 goto nla_put_failure;
4407
4408         if ((params->key &&
4409              nla_put(cookie->msg, NL80211_KEY_DATA,
4410                      params->key_len, params->key)) ||
4411             (params->seq &&
4412              nla_put(cookie->msg, NL80211_KEY_SEQ,
4413                      params->seq_len, params->seq)) ||
4414             (params->cipher &&
4415              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4416                          params->cipher)))
4417                 goto nla_put_failure;
4418
4419         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4420                 goto nla_put_failure;
4421
4422         nla_nest_end(cookie->msg, key);
4423
4424         return;
4425  nla_put_failure:
4426         cookie->error = 1;
4427 }
4428
4429 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4430 {
4431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4432         int err;
4433         struct net_device *dev = info->user_ptr[1];
4434         u8 key_idx = 0;
4435         const u8 *mac_addr = NULL;
4436         bool pairwise;
4437         struct get_key_cookie cookie = {
4438                 .error = 0,
4439         };
4440         void *hdr;
4441         struct sk_buff *msg;
4442         bool bigtk_support = false;
4443         int link_id = nl80211_link_id_or_invalid(info->attrs);
4444         struct wireless_dev *wdev = dev->ieee80211_ptr;
4445
4446         if (wiphy_ext_feature_isset(&rdev->wiphy,
4447                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4448                 bigtk_support = true;
4449
4450         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
4451              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4452             wiphy_ext_feature_isset(&rdev->wiphy,
4453                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4454                 bigtk_support = true;
4455
4456         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4457                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4458
4459                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4460                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4461                         return -EINVAL;
4462                 }
4463         }
4464
4465         if (info->attrs[NL80211_ATTR_MAC])
4466                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4467
4468         pairwise = !!mac_addr;
4469         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4470                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4471
4472                 if (kt != NL80211_KEYTYPE_GROUP &&
4473                     kt != NL80211_KEYTYPE_PAIRWISE)
4474                         return -EINVAL;
4475                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4476         }
4477
4478         if (!rdev->ops->get_key)
4479                 return -EOPNOTSUPP;
4480
4481         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4482                 return -ENOENT;
4483
4484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4485         if (!msg)
4486                 return -ENOMEM;
4487
4488         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4489                              NL80211_CMD_NEW_KEY);
4490         if (!hdr)
4491                 goto nla_put_failure;
4492
4493         cookie.msg = msg;
4494         cookie.idx = key_idx;
4495
4496         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4497             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4498                 goto nla_put_failure;
4499         if (mac_addr &&
4500             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4501                 goto nla_put_failure;
4502
4503         err = nl80211_validate_key_link_id(info, wdev, link_id, pairwise);
4504         if (err)
4505                 goto free_msg;
4506
4507         err = rdev_get_key(rdev, dev, link_id, key_idx, pairwise, mac_addr,
4508                            &cookie, get_key_callback);
4509
4510         if (err)
4511                 goto free_msg;
4512
4513         if (cookie.error)
4514                 goto nla_put_failure;
4515
4516         genlmsg_end(msg, hdr);
4517         return genlmsg_reply(msg, info);
4518
4519  nla_put_failure:
4520         err = -ENOBUFS;
4521  free_msg:
4522         nlmsg_free(msg);
4523         return err;
4524 }
4525
4526 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4527 {
4528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4529         struct key_parse key;
4530         int err;
4531         struct net_device *dev = info->user_ptr[1];
4532         int link_id = nl80211_link_id_or_invalid(info->attrs);
4533         struct wireless_dev *wdev = dev->ieee80211_ptr;
4534
4535         err = nl80211_parse_key(info, &key);
4536         if (err)
4537                 return err;
4538
4539         if (key.idx < 0)
4540                 return -EINVAL;
4541
4542         /* Only support setting default key and
4543          * Extended Key ID action NL80211_KEY_SET_TX.
4544          */
4545         if (!key.def && !key.defmgmt && !key.defbeacon &&
4546             !(key.p.mode == NL80211_KEY_SET_TX))
4547                 return -EINVAL;
4548
4549         wdev_lock(wdev);
4550
4551         if (key.def) {
4552                 if (!rdev->ops->set_default_key) {
4553                         err = -EOPNOTSUPP;
4554                         goto out;
4555                 }
4556
4557                 err = nl80211_key_allowed(wdev);
4558                 if (err)
4559                         goto out;
4560
4561                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4562                 if (err)
4563                         goto out;
4564
4565                 err = rdev_set_default_key(rdev, dev, link_id, key.idx,
4566                                            key.def_uni, key.def_multi);
4567
4568                 if (err)
4569                         goto out;
4570
4571 #ifdef CONFIG_CFG80211_WEXT
4572                 wdev->wext.default_key = key.idx;
4573 #endif
4574         } else if (key.defmgmt) {
4575                 if (key.def_uni || !key.def_multi) {
4576                         err = -EINVAL;
4577                         goto out;
4578                 }
4579
4580                 if (!rdev->ops->set_default_mgmt_key) {
4581                         err = -EOPNOTSUPP;
4582                         goto out;
4583                 }
4584
4585                 err = nl80211_key_allowed(wdev);
4586                 if (err)
4587                         goto out;
4588
4589                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4590                 if (err)
4591                         goto out;
4592
4593                 err = rdev_set_default_mgmt_key(rdev, dev, link_id, key.idx);
4594                 if (err)
4595                         goto out;
4596
4597 #ifdef CONFIG_CFG80211_WEXT
4598                 wdev->wext.default_mgmt_key = key.idx;
4599 #endif
4600         } else if (key.defbeacon) {
4601                 if (key.def_uni || !key.def_multi) {
4602                         err = -EINVAL;
4603                         goto out;
4604                 }
4605
4606                 if (!rdev->ops->set_default_beacon_key) {
4607                         err = -EOPNOTSUPP;
4608                         goto out;
4609                 }
4610
4611                 err = nl80211_key_allowed(wdev);
4612                 if (err)
4613                         goto out;
4614
4615                 err = nl80211_validate_key_link_id(info, wdev, link_id, false);
4616                 if (err)
4617                         goto out;
4618
4619                 err = rdev_set_default_beacon_key(rdev, dev, link_id, key.idx);
4620                 if (err)
4621                         goto out;
4622         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4623                    wiphy_ext_feature_isset(&rdev->wiphy,
4624                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4625                 u8 *mac_addr = NULL;
4626
4627                 if (info->attrs[NL80211_ATTR_MAC])
4628                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4629
4630                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4631                         err = -EINVAL;
4632                         goto out;
4633                 }
4634
4635                 err = nl80211_validate_key_link_id(info, wdev, link_id, true);
4636                 if (err)
4637                         goto out;
4638
4639                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4640                                    NL80211_KEYTYPE_PAIRWISE,
4641                                    mac_addr, &key.p);
4642         } else {
4643                 err = -EINVAL;
4644         }
4645  out:
4646         wdev_unlock(wdev);
4647
4648         return err;
4649 }
4650
4651 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4652 {
4653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4654         int err;
4655         struct net_device *dev = info->user_ptr[1];
4656         struct key_parse key;
4657         const u8 *mac_addr = NULL;
4658         int link_id = nl80211_link_id_or_invalid(info->attrs);
4659         struct wireless_dev *wdev = dev->ieee80211_ptr;
4660
4661         err = nl80211_parse_key(info, &key);
4662         if (err)
4663                 return err;
4664
4665         if (!key.p.key) {
4666                 GENL_SET_ERR_MSG(info, "no key");
4667                 return -EINVAL;
4668         }
4669
4670         if (info->attrs[NL80211_ATTR_MAC])
4671                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672
4673         if (key.type == -1) {
4674                 if (mac_addr)
4675                         key.type = NL80211_KEYTYPE_PAIRWISE;
4676                 else
4677                         key.type = NL80211_KEYTYPE_GROUP;
4678         }
4679
4680         /* for now */
4681         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4682             key.type != NL80211_KEYTYPE_GROUP) {
4683                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4684                 return -EINVAL;
4685         }
4686
4687         if (key.type == NL80211_KEYTYPE_GROUP &&
4688             info->attrs[NL80211_ATTR_VLAN_ID])
4689                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4690
4691         if (!rdev->ops->add_key)
4692                 return -EOPNOTSUPP;
4693
4694         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4695                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4696                                            mac_addr)) {
4697                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4698                 return -EINVAL;
4699         }
4700
4701         wdev_lock(wdev);
4702         err = nl80211_key_allowed(wdev);
4703         if (err)
4704                 GENL_SET_ERR_MSG(info, "key not allowed");
4705
4706         if (!err)
4707                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4708                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4709
4710         if (!err) {
4711                 err = rdev_add_key(rdev, dev, link_id, key.idx,
4712                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4713                                     mac_addr, &key.p);
4714                 if (err)
4715                         GENL_SET_ERR_MSG(info, "key addition failed");
4716         }
4717         wdev_unlock(wdev);
4718
4719         return err;
4720 }
4721
4722 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4723 {
4724         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4725         int err;
4726         struct net_device *dev = info->user_ptr[1];
4727         u8 *mac_addr = NULL;
4728         struct key_parse key;
4729         int link_id = nl80211_link_id_or_invalid(info->attrs);
4730         struct wireless_dev *wdev = dev->ieee80211_ptr;
4731
4732         err = nl80211_parse_key(info, &key);
4733         if (err)
4734                 return err;
4735
4736         if (info->attrs[NL80211_ATTR_MAC])
4737                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4738
4739         if (key.type == -1) {
4740                 if (mac_addr)
4741                         key.type = NL80211_KEYTYPE_PAIRWISE;
4742                 else
4743                         key.type = NL80211_KEYTYPE_GROUP;
4744         }
4745
4746         /* for now */
4747         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4748             key.type != NL80211_KEYTYPE_GROUP)
4749                 return -EINVAL;
4750
4751         if (!cfg80211_valid_key_idx(rdev, key.idx,
4752                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4753                 return -EINVAL;
4754
4755         if (!rdev->ops->del_key)
4756                 return -EOPNOTSUPP;
4757
4758         wdev_lock(wdev);
4759         err = nl80211_key_allowed(wdev);
4760
4761         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4762             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4763                 err = -ENOENT;
4764
4765         if (!err)
4766                 err = nl80211_validate_key_link_id(info, wdev, link_id,
4767                                 key.type == NL80211_KEYTYPE_PAIRWISE);
4768
4769         if (!err)
4770                 err = rdev_del_key(rdev, dev, link_id, key.idx,
4771                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4772                                    mac_addr);
4773
4774 #ifdef CONFIG_CFG80211_WEXT
4775         if (!err) {
4776                 if (key.idx == wdev->wext.default_key)
4777                         wdev->wext.default_key = -1;
4778                 else if (key.idx == wdev->wext.default_mgmt_key)
4779                         wdev->wext.default_mgmt_key = -1;
4780         }
4781 #endif
4782         wdev_unlock(wdev);
4783
4784         return err;
4785 }
4786
4787 /* This function returns an error or the number of nested attributes */
4788 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4789 {
4790         struct nlattr *attr;
4791         int n_entries = 0, tmp;
4792
4793         nla_for_each_nested(attr, nl_attr, tmp) {
4794                 if (nla_len(attr) != ETH_ALEN)
4795                         return -EINVAL;
4796
4797                 n_entries++;
4798         }
4799
4800         return n_entries;
4801 }
4802
4803 /*
4804  * This function parses ACL information and allocates memory for ACL data.
4805  * On successful return, the calling function is responsible to free the
4806  * ACL buffer returned by this function.
4807  */
4808 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4809                                                 struct genl_info *info)
4810 {
4811         enum nl80211_acl_policy acl_policy;
4812         struct nlattr *attr;
4813         struct cfg80211_acl_data *acl;
4814         int i = 0, n_entries, tmp;
4815
4816         if (!wiphy->max_acl_mac_addrs)
4817                 return ERR_PTR(-EOPNOTSUPP);
4818
4819         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4820                 return ERR_PTR(-EINVAL);
4821
4822         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4823         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4824             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4825                 return ERR_PTR(-EINVAL);
4826
4827         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4828                 return ERR_PTR(-EINVAL);
4829
4830         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4831         if (n_entries < 0)
4832                 return ERR_PTR(n_entries);
4833
4834         if (n_entries > wiphy->max_acl_mac_addrs)
4835                 return ERR_PTR(-ENOTSUPP);
4836
4837         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4838         if (!acl)
4839                 return ERR_PTR(-ENOMEM);
4840
4841         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4842                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4843                 i++;
4844         }
4845
4846         acl->n_acl_entries = n_entries;
4847         acl->acl_policy = acl_policy;
4848
4849         return acl;
4850 }
4851
4852 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4853 {
4854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4855         struct net_device *dev = info->user_ptr[1];
4856         struct cfg80211_acl_data *acl;
4857         int err;
4858
4859         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4860             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4861                 return -EOPNOTSUPP;
4862
4863         if (!dev->ieee80211_ptr->links[0].ap.beacon_interval)
4864                 return -EINVAL;
4865
4866         acl = parse_acl_data(&rdev->wiphy, info);
4867         if (IS_ERR(acl))
4868                 return PTR_ERR(acl);
4869
4870         err = rdev_set_mac_acl(rdev, dev, acl);
4871
4872         kfree(acl);
4873
4874         return err;
4875 }
4876
4877 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4878                            u8 *rates, u8 rates_len)
4879 {
4880         u8 i;
4881         u32 mask = 0;
4882
4883         for (i = 0; i < rates_len; i++) {
4884                 int rate = (rates[i] & 0x7f) * 5;
4885                 int ridx;
4886
4887                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4888                         struct ieee80211_rate *srate =
4889                                 &sband->bitrates[ridx];
4890                         if (rate == srate->bitrate) {
4891                                 mask |= 1 << ridx;
4892                                 break;
4893                         }
4894                 }
4895                 if (ridx == sband->n_bitrates)
4896                         return 0; /* rate not found */
4897         }
4898
4899         return mask;
4900 }
4901
4902 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4903                                u8 *rates, u8 rates_len,
4904                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4905 {
4906         u8 i;
4907
4908         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4909
4910         for (i = 0; i < rates_len; i++) {
4911                 int ridx, rbit;
4912
4913                 ridx = rates[i] / 8;
4914                 rbit = BIT(rates[i] % 8);
4915
4916                 /* check validity */
4917                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4918                         return false;
4919
4920                 /* check availability */
4921                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4922                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4923                         mcs[ridx] |= rbit;
4924                 else
4925                         return false;
4926         }
4927
4928         return true;
4929 }
4930
4931 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4932 {
4933         u16 mcs_mask = 0;
4934
4935         switch (vht_mcs_map) {
4936         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4937                 break;
4938         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4939                 mcs_mask = 0x00FF;
4940                 break;
4941         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4942                 mcs_mask = 0x01FF;
4943                 break;
4944         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4945                 mcs_mask = 0x03FF;
4946                 break;
4947         default:
4948                 break;
4949         }
4950
4951         return mcs_mask;
4952 }
4953
4954 static void vht_build_mcs_mask(u16 vht_mcs_map,
4955                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4956 {
4957         u8 nss;
4958
4959         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4960                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4961                 vht_mcs_map >>= 2;
4962         }
4963 }
4964
4965 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4966                              struct nl80211_txrate_vht *txrate,
4967                              u16 mcs[NL80211_VHT_NSS_MAX])
4968 {
4969         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4970         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4971         u8 i;
4972
4973         if (!sband->vht_cap.vht_supported)
4974                 return false;
4975
4976         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4977
4978         /* Build vht_mcs_mask from VHT capabilities */
4979         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4980
4981         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4982                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4983                         mcs[i] = txrate->mcs[i];
4984                 else
4985                         return false;
4986         }
4987
4988         return true;
4989 }
4990
4991 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4992 {
4993         switch (he_mcs_map) {
4994         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4995                 return 0;
4996         case IEEE80211_HE_MCS_SUPPORT_0_7:
4997                 return 0x00FF;
4998         case IEEE80211_HE_MCS_SUPPORT_0_9:
4999                 return 0x03FF;
5000         case IEEE80211_HE_MCS_SUPPORT_0_11:
5001                 return 0xFFF;
5002         default:
5003                 break;
5004         }
5005         return 0;
5006 }
5007
5008 static void he_build_mcs_mask(u16 he_mcs_map,
5009                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
5010 {
5011         u8 nss;
5012
5013         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
5014                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
5015                 he_mcs_map >>= 2;
5016         }
5017 }
5018
5019 static u16 he_get_txmcsmap(struct genl_info *info, unsigned int link_id,
5020                            const struct ieee80211_sta_he_cap *he_cap)
5021 {
5022         struct net_device *dev = info->user_ptr[1];
5023         struct wireless_dev *wdev = dev->ieee80211_ptr;
5024         struct cfg80211_chan_def *chandef;
5025         __le16 tx_mcs;
5026
5027         chandef = wdev_chandef(wdev, link_id);
5028         if (!chandef) {
5029                 /*
5030                  * This is probably broken, but we never maintained
5031                  * a chandef in these cases, so it always was.
5032                  */
5033                 return le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
5034         }
5035
5036         switch (chandef->width) {
5037         case NL80211_CHAN_WIDTH_80P80:
5038                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
5039                 break;
5040         case NL80211_CHAN_WIDTH_160:
5041                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
5042                 break;
5043         default:
5044                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
5045                 break;
5046         }
5047
5048         return le16_to_cpu(tx_mcs);
5049 }
5050
5051 static bool he_set_mcs_mask(struct genl_info *info,
5052                             struct wireless_dev *wdev,
5053                             struct ieee80211_supported_band *sband,
5054                             struct nl80211_txrate_he *txrate,
5055                             u16 mcs[NL80211_HE_NSS_MAX],
5056                             unsigned int link_id)
5057 {
5058         const struct ieee80211_sta_he_cap *he_cap;
5059         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
5060         u16 tx_mcs_map = 0;
5061         u8 i;
5062
5063         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5064         if (!he_cap)
5065                 return false;
5066
5067         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
5068
5069         tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5070
5071         /* Build he_mcs_mask from HE capabilities */
5072         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
5073
5074         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5075                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
5076                         mcs[i] = txrate->mcs[i];
5077                 else
5078                         return false;
5079         }
5080
5081         return true;
5082 }
5083
5084 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
5085                                          struct nlattr *attrs[],
5086                                          enum nl80211_attrs attr,
5087                                          struct cfg80211_bitrate_mask *mask,
5088                                          struct net_device *dev,
5089                                          bool default_all_enabled,
5090                                          unsigned int link_id)
5091 {
5092         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
5093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5094         struct wireless_dev *wdev = dev->ieee80211_ptr;
5095         int rem, i;
5096         struct nlattr *tx_rates;
5097         struct ieee80211_supported_band *sband;
5098         u16 vht_tx_mcs_map, he_tx_mcs_map;
5099
5100         memset(mask, 0, sizeof(*mask));
5101         /* Default to all rates enabled */
5102         for (i = 0; i < NUM_NL80211_BANDS; i++) {
5103                 const struct ieee80211_sta_he_cap *he_cap;
5104
5105                 if (!default_all_enabled)
5106                         break;
5107
5108                 sband = rdev->wiphy.bands[i];
5109
5110                 if (!sband)
5111                         continue;
5112
5113                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
5114                 memcpy(mask->control[i].ht_mcs,
5115                        sband->ht_cap.mcs.rx_mask,
5116                        sizeof(mask->control[i].ht_mcs));
5117
5118                 if (sband->vht_cap.vht_supported) {
5119                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
5120                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
5121                 }
5122
5123                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
5124                 if (!he_cap)
5125                         continue;
5126
5127                 he_tx_mcs_map = he_get_txmcsmap(info, link_id, he_cap);
5128                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
5129
5130                 mask->control[i].he_gi = 0xFF;
5131                 mask->control[i].he_ltf = 0xFF;
5132         }
5133
5134         /* if no rates are given set it back to the defaults */
5135         if (!attrs[attr])
5136                 goto out;
5137
5138         /* The nested attribute uses enum nl80211_band as the index. This maps
5139          * directly to the enum nl80211_band values used in cfg80211.
5140          */
5141         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
5142         nla_for_each_nested(tx_rates, attrs[attr], rem) {
5143                 enum nl80211_band band = nla_type(tx_rates);
5144                 int err;
5145
5146                 if (band < 0 || band >= NUM_NL80211_BANDS)
5147                         return -EINVAL;
5148                 sband = rdev->wiphy.bands[band];
5149                 if (sband == NULL)
5150                         return -EINVAL;
5151                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
5152                                                   tx_rates,
5153                                                   nl80211_txattr_policy,
5154                                                   info->extack);
5155                 if (err)
5156                         return err;
5157                 if (tb[NL80211_TXRATE_LEGACY]) {
5158                         mask->control[band].legacy = rateset_to_mask(
5159                                 sband,
5160                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
5161                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
5162                         if ((mask->control[band].legacy == 0) &&
5163                             nla_len(tb[NL80211_TXRATE_LEGACY]))
5164                                 return -EINVAL;
5165                 }
5166                 if (tb[NL80211_TXRATE_HT]) {
5167                         if (!ht_rateset_to_mask(
5168                                         sband,
5169                                         nla_data(tb[NL80211_TXRATE_HT]),
5170                                         nla_len(tb[NL80211_TXRATE_HT]),
5171                                         mask->control[band].ht_mcs))
5172                                 return -EINVAL;
5173                 }
5174
5175                 if (tb[NL80211_TXRATE_VHT]) {
5176                         if (!vht_set_mcs_mask(
5177                                         sband,
5178                                         nla_data(tb[NL80211_TXRATE_VHT]),
5179                                         mask->control[band].vht_mcs))
5180                                 return -EINVAL;
5181                 }
5182
5183                 if (tb[NL80211_TXRATE_GI]) {
5184                         mask->control[band].gi =
5185                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
5186                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
5187                                 return -EINVAL;
5188                 }
5189                 if (tb[NL80211_TXRATE_HE] &&
5190                     !he_set_mcs_mask(info, wdev, sband,
5191                                      nla_data(tb[NL80211_TXRATE_HE]),
5192                                      mask->control[band].he_mcs,
5193                                      link_id))
5194                         return -EINVAL;
5195
5196                 if (tb[NL80211_TXRATE_HE_GI])
5197                         mask->control[band].he_gi =
5198                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
5199                 if (tb[NL80211_TXRATE_HE_LTF])
5200                         mask->control[band].he_ltf =
5201                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
5202
5203                 if (mask->control[band].legacy == 0) {
5204                         /* don't allow empty legacy rates if HT, VHT or HE
5205                          * are not even supported.
5206                          */
5207                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
5208                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
5209                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
5210                                 return -EINVAL;
5211
5212                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
5213                                 if (mask->control[band].ht_mcs[i])
5214                                         goto out;
5215
5216                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
5217                                 if (mask->control[band].vht_mcs[i])
5218                                         goto out;
5219
5220                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
5221                                 if (mask->control[band].he_mcs[i])
5222                                         goto out;
5223
5224                         /* legacy and mcs rates may not be both empty */
5225                         return -EINVAL;
5226                 }
5227         }
5228
5229 out:
5230         return 0;
5231 }
5232
5233 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
5234                                    enum nl80211_band band,
5235                                    struct cfg80211_bitrate_mask *beacon_rate)
5236 {
5237         u32 count_ht, count_vht, count_he, i;
5238         u32 rate = beacon_rate->control[band].legacy;
5239
5240         /* Allow only one rate */
5241         if (hweight32(rate) > 1)
5242                 return -EINVAL;
5243
5244         count_ht = 0;
5245         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
5246                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
5247                         return -EINVAL;
5248                 } else if (beacon_rate->control[band].ht_mcs[i]) {
5249                         count_ht++;
5250                         if (count_ht > 1)
5251                                 return -EINVAL;
5252                 }
5253                 if (count_ht && rate)
5254                         return -EINVAL;
5255         }
5256
5257         count_vht = 0;
5258         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
5259                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
5260                         return -EINVAL;
5261                 } else if (beacon_rate->control[band].vht_mcs[i]) {
5262                         count_vht++;
5263                         if (count_vht > 1)
5264                                 return -EINVAL;
5265                 }
5266                 if (count_vht && rate)
5267                         return -EINVAL;
5268         }
5269
5270         count_he = 0;
5271         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
5272                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
5273                         return -EINVAL;
5274                 } else if (beacon_rate->control[band].he_mcs[i]) {
5275                         count_he++;
5276                         if (count_he > 1)
5277                                 return -EINVAL;
5278                 }
5279                 if (count_he && rate)
5280                         return -EINVAL;
5281         }
5282
5283         if ((count_ht && count_vht && count_he) ||
5284             (!rate && !count_ht && !count_vht && !count_he))
5285                 return -EINVAL;
5286
5287         if (rate &&
5288             !wiphy_ext_feature_isset(&rdev->wiphy,
5289                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
5290                 return -EINVAL;
5291         if (count_ht &&
5292             !wiphy_ext_feature_isset(&rdev->wiphy,
5293                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
5294                 return -EINVAL;
5295         if (count_vht &&
5296             !wiphy_ext_feature_isset(&rdev->wiphy,
5297                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
5298                 return -EINVAL;
5299         if (count_he &&
5300             !wiphy_ext_feature_isset(&rdev->wiphy,
5301                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
5302                 return -EINVAL;
5303
5304         return 0;
5305 }
5306
5307 static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
5308                                        struct net_device *dev,
5309                                        struct nlattr *attrs,
5310                                        struct cfg80211_mbssid_config *config,
5311                                        u8 num_elems)
5312 {
5313         struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
5314
5315         if (!wiphy->mbssid_max_interfaces)
5316                 return -EOPNOTSUPP;
5317
5318         if (nla_parse_nested(tb, NL80211_MBSSID_CONFIG_ATTR_MAX, attrs, NULL,
5319                              NULL) ||
5320             !tb[NL80211_MBSSID_CONFIG_ATTR_INDEX])
5321                 return -EINVAL;
5322
5323         config->ema = nla_get_flag(tb[NL80211_MBSSID_CONFIG_ATTR_EMA]);
5324         if (config->ema) {
5325                 if (!wiphy->ema_max_profile_periodicity)
5326                         return -EOPNOTSUPP;
5327
5328                 if (num_elems > wiphy->ema_max_profile_periodicity)
5329                         return -EINVAL;
5330         }
5331
5332         config->index = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_INDEX]);
5333         if (config->index >= wiphy->mbssid_max_interfaces ||
5334             (!config->index && !num_elems))
5335                 return -EINVAL;
5336
5337         if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]) {
5338                 u32 tx_ifindex =
5339                         nla_get_u32(tb[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX]);
5340
5341                 if ((!config->index && tx_ifindex != dev->ifindex) ||
5342                     (config->index && tx_ifindex == dev->ifindex))
5343                         return -EINVAL;
5344
5345                 if (tx_ifindex != dev->ifindex) {
5346                         struct net_device *tx_netdev =
5347                                 dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
5348
5349                         if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
5350                             tx_netdev->ieee80211_ptr->wiphy != wiphy ||
5351                             tx_netdev->ieee80211_ptr->iftype !=
5352                                                         NL80211_IFTYPE_AP) {
5353                                 dev_put(tx_netdev);
5354                                 return -EINVAL;
5355                         }
5356
5357                         config->tx_wdev = tx_netdev->ieee80211_ptr;
5358                 } else {
5359                         config->tx_wdev = dev->ieee80211_ptr;
5360                 }
5361         } else if (!config->index) {
5362                 config->tx_wdev = dev->ieee80211_ptr;
5363         } else {
5364                 return -EINVAL;
5365         }
5366
5367         return 0;
5368 }
5369
5370 static struct cfg80211_mbssid_elems *
5371 nl80211_parse_mbssid_elems(struct wiphy *wiphy, struct nlattr *attrs)
5372 {
5373         struct nlattr *nl_elems;
5374         struct cfg80211_mbssid_elems *elems;
5375         int rem_elems;
5376         u8 i = 0, num_elems = 0;
5377
5378         if (!wiphy->mbssid_max_interfaces)
5379                 return ERR_PTR(-EINVAL);
5380
5381         nla_for_each_nested(nl_elems, attrs, rem_elems)
5382                 num_elems++;
5383
5384         elems = kzalloc(struct_size(elems, elem, num_elems), GFP_KERNEL);
5385         if (!elems)
5386                 return ERR_PTR(-ENOMEM);
5387
5388         nla_for_each_nested(nl_elems, attrs, rem_elems) {
5389                 elems->elem[i].data = nla_data(nl_elems);
5390                 elems->elem[i].len = nla_len(nl_elems);
5391                 i++;
5392         }
5393         elems->cnt = num_elems;
5394         return elems;
5395 }
5396
5397 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5398                                       struct cfg80211_he_bss_color *he_bss_color)
5399 {
5400         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5401         int err;
5402
5403         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5404                                he_bss_color_policy, NULL);
5405         if (err)
5406                 return err;
5407
5408         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5409                 return -EINVAL;
5410
5411         he_bss_color->color =
5412                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5413         he_bss_color->enabled =
5414                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5415         he_bss_color->partial =
5416                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5417
5418         return 0;
5419 }
5420
5421 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
5422                                 struct nlattr *attrs[],
5423                                 struct cfg80211_beacon_data *bcn)
5424 {
5425         bool haveinfo = false;
5426         int err;
5427
5428         memset(bcn, 0, sizeof(*bcn));
5429
5430         bcn->link_id = nl80211_link_id(attrs);
5431
5432         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
5433                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
5434                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
5435                 if (!bcn->head_len)
5436                         return -EINVAL;
5437                 haveinfo = true;
5438         }
5439
5440         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
5441                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
5442                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5443                 haveinfo = true;
5444         }
5445
5446         if (!haveinfo)
5447                 return -EINVAL;
5448
5449         if (attrs[NL80211_ATTR_IE]) {
5450                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5451                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5452         }
5453
5454         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5455                 bcn->proberesp_ies =
5456                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5457                 bcn->proberesp_ies_len =
5458                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5459         }
5460
5461         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5462                 bcn->assocresp_ies =
5463                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5464                 bcn->assocresp_ies_len =
5465                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5466         }
5467
5468         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5469                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5470                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5471         }
5472
5473         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5474                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5475
5476                 err = nla_parse_nested_deprecated(tb,
5477                                                   NL80211_FTM_RESP_ATTR_MAX,
5478                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5479                                                   NULL, NULL);
5480                 if (err)
5481                         return err;
5482
5483                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5484                     wiphy_ext_feature_isset(&rdev->wiphy,
5485                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5486                         bcn->ftm_responder = 1;
5487                 else
5488                         return -EOPNOTSUPP;
5489
5490                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5491                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5492                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5493                 }
5494
5495                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5496                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5497                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5498                 }
5499         } else {
5500                 bcn->ftm_responder = -1;
5501         }
5502
5503         if (attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5504                 err = nl80211_parse_he_bss_color(attrs[NL80211_ATTR_HE_BSS_COLOR],
5505                                                  &bcn->he_bss_color);
5506                 if (err)
5507                         return err;
5508                 bcn->he_bss_color_valid = true;
5509         }
5510
5511         if (attrs[NL80211_ATTR_MBSSID_ELEMS]) {
5512                 struct cfg80211_mbssid_elems *mbssid =
5513                         nl80211_parse_mbssid_elems(&rdev->wiphy,
5514                                                    attrs[NL80211_ATTR_MBSSID_ELEMS]);
5515
5516                 if (IS_ERR(mbssid))
5517                         return PTR_ERR(mbssid);
5518
5519                 bcn->mbssid_ies = mbssid;
5520         }
5521
5522         return 0;
5523 }
5524
5525 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5526                                     struct ieee80211_he_obss_pd *he_obss_pd)
5527 {
5528         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5529         int err;
5530
5531         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5532                                he_obss_pd_policy, NULL);
5533         if (err)
5534                 return err;
5535
5536         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5537                 return -EINVAL;
5538
5539         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5540
5541         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5542                 he_obss_pd->min_offset =
5543                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5544         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5545                 he_obss_pd->max_offset =
5546                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5547         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5548                 he_obss_pd->non_srg_max_offset =
5549                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5550
5551         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5552                 return -EINVAL;
5553
5554         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5555                 memcpy(he_obss_pd->bss_color_bitmap,
5556                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5557                        sizeof(he_obss_pd->bss_color_bitmap));
5558
5559         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5560                 memcpy(he_obss_pd->partial_bssid_bitmap,
5561                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5562                        sizeof(he_obss_pd->partial_bssid_bitmap));
5563
5564         he_obss_pd->enable = true;
5565
5566         return 0;
5567 }
5568
5569 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5570                                         struct nlattr *attrs,
5571                                         struct cfg80211_ap_settings *params)
5572 {
5573         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5574         int ret;
5575         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5576
5577         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5578                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5579                 return -EINVAL;
5580
5581         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5582                                NULL, NULL);
5583         if (ret)
5584                 return ret;
5585
5586         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5587             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5588             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5589                 return -EINVAL;
5590
5591         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5592         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5593         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5594         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5595
5596         return 0;
5597 }
5598
5599 static int
5600 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5601                                      struct nlattr *attrs,
5602                                      struct cfg80211_ap_settings *params)
5603 {
5604         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5605         int ret;
5606         struct cfg80211_unsol_bcast_probe_resp *presp =
5607                                         &params->unsol_bcast_probe_resp;
5608
5609         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5610                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5611                 return -EINVAL;
5612
5613         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5614                                attrs, NULL, NULL);
5615         if (ret)
5616                 return ret;
5617
5618         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5619             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5620                 return -EINVAL;
5621
5622         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5623         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5624         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5625         return 0;
5626 }
5627
5628 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5629                                             const struct element *rates)
5630 {
5631         int i;
5632
5633         if (!rates)
5634                 return;
5635
5636         for (i = 0; i < rates->datalen; i++) {
5637                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5638                         params->ht_required = true;
5639                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5640                         params->vht_required = true;
5641                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5642                         params->he_required = true;
5643                 if (rates->data[i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5644                         params->sae_h2e_required = true;
5645         }
5646 }
5647
5648 /*
5649  * Since the nl80211 API didn't include, from the beginning, attributes about
5650  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5651  * benefit of drivers that rebuild IEs in the firmware.
5652  */
5653 static int nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5654 {
5655         const struct cfg80211_beacon_data *bcn = &params->beacon;
5656         size_t ies_len = bcn->tail_len;
5657         const u8 *ies = bcn->tail;
5658         const struct element *rates;
5659         const struct element *cap;
5660
5661         rates = cfg80211_find_elem(WLAN_EID_SUPP_RATES, ies, ies_len);
5662         nl80211_check_ap_rate_selectors(params, rates);
5663
5664         rates = cfg80211_find_elem(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5665         nl80211_check_ap_rate_selectors(params, rates);
5666
5667         cap = cfg80211_find_elem(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5668         if (cap && cap->datalen >= sizeof(*params->ht_cap))
5669                 params->ht_cap = (void *)cap->data;
5670         cap = cfg80211_find_elem(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5671         if (cap && cap->datalen >= sizeof(*params->vht_cap))
5672                 params->vht_cap = (void *)cap->data;
5673         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5674         if (cap && cap->datalen >= sizeof(*params->he_cap) + 1)
5675                 params->he_cap = (void *)(cap->data + 1);
5676         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5677         if (cap && cap->datalen >= sizeof(*params->he_oper) + 1)
5678                 params->he_oper = (void *)(cap->data + 1);
5679         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_CAPABILITY, ies, ies_len);
5680         if (cap) {
5681                 if (!cap->datalen)
5682                         return -EINVAL;
5683                 params->eht_cap = (void *)(cap->data + 1);
5684                 if (!ieee80211_eht_capa_size_ok((const u8 *)params->he_cap,
5685                                                 (const u8 *)params->eht_cap,
5686                                                 cap->datalen - 1, true))
5687                         return -EINVAL;
5688         }
5689         cap = cfg80211_find_ext_elem(WLAN_EID_EXT_EHT_OPERATION, ies, ies_len);
5690         if (cap) {
5691                 if (!cap->datalen)
5692                         return -EINVAL;
5693                 params->eht_oper = (void *)(cap->data + 1);
5694                 if (!ieee80211_eht_oper_size_ok((const u8 *)params->eht_oper,
5695                                                 cap->datalen - 1))
5696                         return -EINVAL;
5697         }
5698         return 0;
5699 }
5700
5701 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5702                                    struct cfg80211_ap_settings *params)
5703 {
5704         struct wireless_dev *wdev;
5705
5706         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5707                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5708                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5709                         continue;
5710
5711                 if (!wdev->u.ap.preset_chandef.chan)
5712                         continue;
5713
5714                 params->chandef = wdev->u.ap.preset_chandef;
5715                 return true;
5716         }
5717
5718         return false;
5719 }
5720
5721 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5722                                     enum nl80211_auth_type auth_type,
5723                                     enum nl80211_commands cmd)
5724 {
5725         if (auth_type > NL80211_AUTHTYPE_MAX)
5726                 return false;
5727
5728         switch (cmd) {
5729         case NL80211_CMD_AUTHENTICATE:
5730                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5731                     auth_type == NL80211_AUTHTYPE_SAE)
5732                         return false;
5733                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5734                                              NL80211_EXT_FEATURE_FILS_STA) &&
5735                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5736                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5737                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5738                         return false;
5739                 return true;
5740         case NL80211_CMD_CONNECT:
5741                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5742                     !wiphy_ext_feature_isset(&rdev->wiphy,
5743                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5744                     auth_type == NL80211_AUTHTYPE_SAE)
5745                         return false;
5746
5747                 /* FILS with SK PFS or PK not supported yet */
5748                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5749                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5750                         return false;
5751                 if (!wiphy_ext_feature_isset(
5752                             &rdev->wiphy,
5753                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5754                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5755                         return false;
5756                 return true;
5757         case NL80211_CMD_START_AP:
5758                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5759                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5760                     auth_type == NL80211_AUTHTYPE_SAE)
5761                         return false;
5762                 /* FILS not supported yet */
5763                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5764                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5765                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5766                         return false;
5767                 return true;
5768         default:
5769                 return false;
5770         }
5771 }
5772
5773 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5774 {
5775         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5776         unsigned int link_id = nl80211_link_id(info->attrs);
5777         struct net_device *dev = info->user_ptr[1];
5778         struct wireless_dev *wdev = dev->ieee80211_ptr;
5779         struct cfg80211_ap_settings *params;
5780         int err;
5781
5782         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5783             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5784                 return -EOPNOTSUPP;
5785
5786         if (!rdev->ops->start_ap)
5787                 return -EOPNOTSUPP;
5788
5789         if (wdev->links[link_id].ap.beacon_interval)
5790                 return -EALREADY;
5791
5792         /* these are required for START_AP */
5793         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5794             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5795             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5796                 return -EINVAL;
5797
5798         params = kzalloc(sizeof(*params), GFP_KERNEL);
5799         if (!params)
5800                 return -ENOMEM;
5801
5802         err = nl80211_parse_beacon(rdev, info->attrs, &params->beacon);
5803         if (err)
5804                 goto out;
5805
5806         params->beacon_interval =
5807                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5808         params->dtim_period =
5809                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5810
5811         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5812                                            params->beacon_interval);
5813         if (err)
5814                 goto out;
5815
5816         /*
5817          * In theory, some of these attributes should be required here
5818          * but since they were not used when the command was originally
5819          * added, keep them optional for old user space programs to let
5820          * them continue to work with drivers that do not need the
5821          * additional information -- drivers must check!
5822          */
5823         if (info->attrs[NL80211_ATTR_SSID]) {
5824                 params->ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5825                 params->ssid_len =
5826                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5827                 if (params->ssid_len == 0) {
5828                         err = -EINVAL;
5829                         goto out;
5830                 }
5831
5832                 if (wdev->u.ap.ssid_len &&
5833                     (wdev->u.ap.ssid_len != params->ssid_len ||
5834                      memcmp(wdev->u.ap.ssid, params->ssid, params->ssid_len))) {
5835                         /* require identical SSID for MLO */
5836                         err = -EINVAL;
5837                         goto out;
5838                 }
5839         } else if (wdev->valid_links) {
5840                 /* require SSID for MLO */
5841                 err = -EINVAL;
5842                 goto out;
5843         }
5844
5845         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5846                 params->hidden_ssid = nla_get_u32(
5847                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5848
5849         params->privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5850
5851         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5852                 params->auth_type = nla_get_u32(
5853                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5854                 if (!nl80211_valid_auth_type(rdev, params->auth_type,
5855                                              NL80211_CMD_START_AP)) {
5856                         err = -EINVAL;
5857                         goto out;
5858                 }
5859         } else
5860                 params->auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5861
5862         err = nl80211_crypto_settings(rdev, info, &params->crypto,
5863                                       NL80211_MAX_NR_CIPHER_SUITES);
5864         if (err)
5865                 goto out;
5866
5867         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5868                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) {
5869                         err = -EOPNOTSUPP;
5870                         goto out;
5871                 }
5872                 params->inactivity_timeout = nla_get_u16(
5873                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5874         }
5875
5876         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5877                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5878                         err = -EINVAL;
5879                         goto out;
5880                 }
5881                 params->p2p_ctwindow =
5882                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5883                 if (params->p2p_ctwindow != 0 &&
5884                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) {
5885                         err = -EINVAL;
5886                         goto out;
5887                 }
5888         }
5889
5890         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5891                 u8 tmp;
5892
5893                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5894                         err = -EINVAL;
5895                         goto out;
5896                 }
5897                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5898                 params->p2p_opp_ps = tmp;
5899                 if (params->p2p_opp_ps != 0 &&
5900                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) {
5901                         err = -EINVAL;
5902                         goto out;
5903                 }
5904         }
5905
5906         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5907                 err = nl80211_parse_chandef(rdev, info, &params->chandef);
5908                 if (err)
5909                         goto out;
5910         } else if (wdev->valid_links) {
5911                 /* with MLD need to specify the channel configuration */
5912                 err = -EINVAL;
5913                 goto out;
5914         } else if (wdev->u.ap.preset_chandef.chan) {
5915                 params->chandef = wdev->u.ap.preset_chandef;
5916         } else if (!nl80211_get_ap_channel(rdev, params)) {
5917                 err = -EINVAL;
5918                 goto out;
5919         }
5920
5921         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params->chandef,
5922                                            wdev->iftype)) {
5923                 err = -EINVAL;
5924                 goto out;
5925         }
5926
5927         wdev_lock(wdev);
5928
5929         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5930                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5931                                                     NL80211_ATTR_TX_RATES,
5932                                                     &params->beacon_rate,
5933                                                     dev, false, link_id);
5934                 if (err)
5935                         goto out_unlock;
5936
5937                 err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
5938                                               &params->beacon_rate);
5939                 if (err)
5940                         goto out_unlock;
5941         }
5942
5943         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5944                 params->smps_mode =
5945                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5946                 switch (params->smps_mode) {
5947                 case NL80211_SMPS_OFF:
5948                         break;
5949                 case NL80211_SMPS_STATIC:
5950                         if (!(rdev->wiphy.features &
5951                               NL80211_FEATURE_STATIC_SMPS)) {
5952                                 err = -EINVAL;
5953                                 goto out_unlock;
5954                         }
5955                         break;
5956                 case NL80211_SMPS_DYNAMIC:
5957                         if (!(rdev->wiphy.features &
5958                               NL80211_FEATURE_DYNAMIC_SMPS)) {
5959                                 err = -EINVAL;
5960                                 goto out_unlock;
5961                         }
5962                         break;
5963                 default:
5964                         err = -EINVAL;
5965                         goto out_unlock;
5966                 }
5967         } else {
5968                 params->smps_mode = NL80211_SMPS_OFF;
5969         }
5970
5971         params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5972         if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
5973                 err = -EOPNOTSUPP;
5974                 goto out_unlock;
5975         }
5976
5977         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5978                 params->acl = parse_acl_data(&rdev->wiphy, info);
5979                 if (IS_ERR(params->acl)) {
5980                         err = PTR_ERR(params->acl);
5981                         params->acl = NULL;
5982                         goto out_unlock;
5983                 }
5984         }
5985
5986         params->twt_responder =
5987                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5988
5989         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5990                 err = nl80211_parse_he_obss_pd(
5991                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5992                                         &params->he_obss_pd);
5993                 if (err)
5994                         goto out_unlock;
5995         }
5996
5997         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5998                 err = nl80211_parse_fils_discovery(rdev,
5999                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
6000                                                    params);
6001                 if (err)
6002                         goto out_unlock;
6003         }
6004
6005         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
6006                 err = nl80211_parse_unsol_bcast_probe_resp(
6007                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
6008                         params);
6009                 if (err)
6010                         goto out_unlock;
6011         }
6012
6013         if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
6014                 err = nl80211_parse_mbssid_config(&rdev->wiphy, dev,
6015                                                   info->attrs[NL80211_ATTR_MBSSID_CONFIG],
6016                                                   &params->mbssid_config,
6017                                                   params->beacon.mbssid_ies ?
6018                                                         params->beacon.mbssid_ies->cnt :
6019                                                         0);
6020                 if (err)
6021                         goto out_unlock;
6022         }
6023
6024         err = nl80211_calculate_ap_params(params);
6025         if (err)
6026                 goto out_unlock;
6027
6028         if (info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS])
6029                 params->flags = nla_get_u32(
6030                         info->attrs[NL80211_ATTR_AP_SETTINGS_FLAGS]);
6031         else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
6032                 params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
6033
6034         if (wdev->conn_owner_nlportid &&
6035             info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
6036             wdev->conn_owner_nlportid != info->snd_portid) {
6037                 err = -EINVAL;
6038                 goto out_unlock;
6039         }
6040
6041         /* FIXME: validate MLO/link-id against driver capabilities */
6042
6043         err = rdev_start_ap(rdev, dev, params);
6044         if (!err) {
6045                 wdev->links[link_id].ap.beacon_interval = params->beacon_interval;
6046                 wdev->links[link_id].ap.chandef = params->chandef;
6047                 wdev->u.ap.ssid_len = params->ssid_len;
6048                 memcpy(wdev->u.ap.ssid, params->ssid,
6049                        params->ssid_len);
6050
6051                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6052                         wdev->conn_owner_nlportid = info->snd_portid;
6053         }
6054 out_unlock:
6055         wdev_unlock(wdev);
6056 out:
6057         kfree(params->acl);
6058         kfree(params->beacon.mbssid_ies);
6059         if (params->mbssid_config.tx_wdev &&
6060             params->mbssid_config.tx_wdev->netdev &&
6061             params->mbssid_config.tx_wdev->netdev != dev)
6062                 dev_put(params->mbssid_config.tx_wdev->netdev);
6063         kfree(params);
6064
6065         return err;
6066 }
6067
6068 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
6069 {
6070         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6071         unsigned int link_id = nl80211_link_id(info->attrs);
6072         struct net_device *dev = info->user_ptr[1];
6073         struct wireless_dev *wdev = dev->ieee80211_ptr;
6074         struct cfg80211_beacon_data params;
6075         int err;
6076
6077         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6078             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6079                 return -EOPNOTSUPP;
6080
6081         if (!rdev->ops->change_beacon)
6082                 return -EOPNOTSUPP;
6083
6084         if (!wdev->links[link_id].ap.beacon_interval)
6085                 return -EINVAL;
6086
6087         err = nl80211_parse_beacon(rdev, info->attrs, &params);
6088         if (err)
6089                 goto out;
6090
6091         wdev_lock(wdev);
6092         err = rdev_change_beacon(rdev, dev, &params);
6093         wdev_unlock(wdev);
6094
6095 out:
6096         kfree(params.mbssid_ies);
6097         return err;
6098 }
6099
6100 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
6101 {
6102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6103         unsigned int link_id = nl80211_link_id(info->attrs);
6104         struct net_device *dev = info->user_ptr[1];
6105
6106         return cfg80211_stop_ap(rdev, dev, link_id, false);
6107 }
6108
6109 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
6110         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
6111         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
6112         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
6113         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
6114         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
6115         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
6116 };
6117
6118 static int parse_station_flags(struct genl_info *info,
6119                                enum nl80211_iftype iftype,
6120                                struct station_parameters *params)
6121 {
6122         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
6123         struct nlattr *nla;
6124         int flag;
6125
6126         /*
6127          * Try parsing the new attribute first so userspace
6128          * can specify both for older kernels.
6129          */
6130         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
6131         if (nla) {
6132                 struct nl80211_sta_flag_update *sta_flags;
6133
6134                 sta_flags = nla_data(nla);
6135                 params->sta_flags_mask = sta_flags->mask;
6136                 params->sta_flags_set = sta_flags->set;
6137                 params->sta_flags_set &= params->sta_flags_mask;
6138                 if ((params->sta_flags_mask |
6139                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
6140                         return -EINVAL;
6141                 return 0;
6142         }
6143
6144         /* if present, parse the old attribute */
6145
6146         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
6147         if (!nla)
6148                 return 0;
6149
6150         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
6151                 return -EINVAL;
6152
6153         /*
6154          * Only allow certain flags for interface types so that
6155          * other attributes are silently ignored. Remember that
6156          * this is backward compatibility code with old userspace
6157          * and shouldn't be hit in other cases anyway.
6158          */
6159         switch (iftype) {
6160         case NL80211_IFTYPE_AP:
6161         case NL80211_IFTYPE_AP_VLAN:
6162         case NL80211_IFTYPE_P2P_GO:
6163                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6164                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6165                                          BIT(NL80211_STA_FLAG_WME) |
6166                                          BIT(NL80211_STA_FLAG_MFP);
6167                 break;
6168         case NL80211_IFTYPE_P2P_CLIENT:
6169         case NL80211_IFTYPE_STATION:
6170                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
6171                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
6172                 break;
6173         case NL80211_IFTYPE_MESH_POINT:
6174                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6175                                          BIT(NL80211_STA_FLAG_MFP) |
6176                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
6177                 break;
6178         default:
6179                 return -EINVAL;
6180         }
6181
6182         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
6183                 if (flags[flag]) {
6184                         params->sta_flags_set |= (1<<flag);
6185
6186                         /* no longer support new API additions in old API */
6187                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
6188                                 return -EINVAL;
6189                 }
6190         }
6191
6192         return 0;
6193 }
6194
6195 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
6196 {
6197         struct nlattr *rate;
6198         u32 bitrate;
6199         u16 bitrate_compat;
6200         enum nl80211_rate_info rate_flg;
6201
6202         rate = nla_nest_start_noflag(msg, attr);
6203         if (!rate)
6204                 return false;
6205
6206         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
6207         bitrate = cfg80211_calculate_bitrate(info);
6208         /* report 16-bit bitrate only if we can */
6209         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
6210         if (bitrate > 0 &&
6211             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
6212                 return false;
6213         if (bitrate_compat > 0 &&
6214             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
6215                 return false;
6216
6217         switch (info->bw) {
6218         case RATE_INFO_BW_5:
6219                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
6220                 break;
6221         case RATE_INFO_BW_10:
6222                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
6223                 break;
6224         default:
6225                 WARN_ON(1);
6226                 fallthrough;
6227         case RATE_INFO_BW_20:
6228                 rate_flg = 0;
6229                 break;
6230         case RATE_INFO_BW_40:
6231                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
6232                 break;
6233         case RATE_INFO_BW_80:
6234                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
6235                 break;
6236         case RATE_INFO_BW_160:
6237                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
6238                 break;
6239         case RATE_INFO_BW_HE_RU:
6240                 rate_flg = 0;
6241                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
6242                 break;
6243         case RATE_INFO_BW_320:
6244                 rate_flg = NL80211_RATE_INFO_320_MHZ_WIDTH;
6245                 break;
6246         case RATE_INFO_BW_EHT_RU:
6247                 rate_flg = 0;
6248                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_EHT_MCS));
6249                 break;
6250         }
6251
6252         if (rate_flg && nla_put_flag(msg, rate_flg))
6253                 return false;
6254
6255         if (info->flags & RATE_INFO_FLAGS_MCS) {
6256                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
6257                         return false;
6258                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6259                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6260                         return false;
6261         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
6262                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
6263                         return false;
6264                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
6265                         return false;
6266                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
6267                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
6268                         return false;
6269         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
6270                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
6271                         return false;
6272                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
6273                         return false;
6274                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
6275                         return false;
6276                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
6277                         return false;
6278                 if (info->bw == RATE_INFO_BW_HE_RU &&
6279                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
6280                                info->he_ru_alloc))
6281                         return false;
6282         } else if (info->flags & RATE_INFO_FLAGS_EHT_MCS) {
6283                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_MCS, info->mcs))
6284                         return false;
6285                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_NSS, info->nss))
6286                         return false;
6287                 if (nla_put_u8(msg, NL80211_RATE_INFO_EHT_GI, info->eht_gi))
6288                         return false;
6289                 if (info->bw == RATE_INFO_BW_EHT_RU &&
6290                     nla_put_u8(msg, NL80211_RATE_INFO_EHT_RU_ALLOC,
6291                                info->eht_ru_alloc))
6292                         return false;
6293         }
6294
6295         nla_nest_end(msg, rate);
6296         return true;
6297 }
6298
6299 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
6300                                int id)
6301 {
6302         void *attr;
6303         int i = 0;
6304
6305         if (!mask)
6306                 return true;
6307
6308         attr = nla_nest_start_noflag(msg, id);
6309         if (!attr)
6310                 return false;
6311
6312         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
6313                 if (!(mask & BIT(i)))
6314                         continue;
6315
6316                 if (nla_put_u8(msg, i, signal[i]))
6317                         return false;
6318         }
6319
6320         nla_nest_end(msg, attr);
6321
6322         return true;
6323 }
6324
6325 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
6326                                 u32 seq, int flags,
6327                                 struct cfg80211_registered_device *rdev,
6328                                 struct net_device *dev,
6329                                 const u8 *mac_addr, struct station_info *sinfo)
6330 {
6331         void *hdr;
6332         struct nlattr *sinfoattr, *bss_param;
6333
6334         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
6335         if (!hdr) {
6336                 cfg80211_sinfo_release_content(sinfo);
6337                 return -1;
6338         }
6339
6340         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6341             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
6342             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
6343                 goto nla_put_failure;
6344
6345         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
6346         if (!sinfoattr)
6347                 goto nla_put_failure;
6348
6349 #define PUT_SINFO(attr, memb, type) do {                                \
6350         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
6351         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6352             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
6353                              sinfo->memb))                              \
6354                 goto nla_put_failure;                                   \
6355         } while (0)
6356 #define PUT_SINFO_U64(attr, memb) do {                                  \
6357         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
6358             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
6359                               sinfo->memb, NL80211_STA_INFO_PAD))       \
6360                 goto nla_put_failure;                                   \
6361         } while (0)
6362
6363         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
6364         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
6365         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
6366
6367         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
6368                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
6369             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
6370                         (u32)sinfo->rx_bytes))
6371                 goto nla_put_failure;
6372
6373         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
6374                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
6375             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
6376                         (u32)sinfo->tx_bytes))
6377                 goto nla_put_failure;
6378
6379         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
6380         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
6381         PUT_SINFO(LLID, llid, u16);
6382         PUT_SINFO(PLID, plid, u16);
6383         PUT_SINFO(PLINK_STATE, plink_state, u8);
6384         PUT_SINFO_U64(RX_DURATION, rx_duration);
6385         PUT_SINFO_U64(TX_DURATION, tx_duration);
6386
6387         if (wiphy_ext_feature_isset(&rdev->wiphy,
6388                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6389                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
6390
6391         switch (rdev->wiphy.signal_type) {
6392         case CFG80211_SIGNAL_TYPE_MBM:
6393                 PUT_SINFO(SIGNAL, signal, u8);
6394                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
6395                 break;
6396         default:
6397                 break;
6398         }
6399         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
6400                 if (!nl80211_put_signal(msg, sinfo->chains,
6401                                         sinfo->chain_signal,
6402                                         NL80211_STA_INFO_CHAIN_SIGNAL))
6403                         goto nla_put_failure;
6404         }
6405         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
6406                 if (!nl80211_put_signal(msg, sinfo->chains,
6407                                         sinfo->chain_signal_avg,
6408                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
6409                         goto nla_put_failure;
6410         }
6411         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
6412                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
6413                                           NL80211_STA_INFO_TX_BITRATE))
6414                         goto nla_put_failure;
6415         }
6416         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
6417                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
6418                                           NL80211_STA_INFO_RX_BITRATE))
6419                         goto nla_put_failure;
6420         }
6421
6422         PUT_SINFO(RX_PACKETS, rx_packets, u32);
6423         PUT_SINFO(TX_PACKETS, tx_packets, u32);
6424         PUT_SINFO(TX_RETRIES, tx_retries, u32);
6425         PUT_SINFO(TX_FAILED, tx_failed, u32);
6426         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
6427         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
6428         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
6429         PUT_SINFO(LOCAL_PM, local_pm, u32);
6430         PUT_SINFO(PEER_PM, peer_pm, u32);
6431         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
6432         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
6433         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
6434
6435         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
6436                 bss_param = nla_nest_start_noflag(msg,
6437                                                   NL80211_STA_INFO_BSS_PARAM);
6438                 if (!bss_param)
6439                         goto nla_put_failure;
6440
6441                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
6442                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
6443                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
6444                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
6445                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
6446                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
6447                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
6448                                sinfo->bss_param.dtim_period) ||
6449                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
6450                                 sinfo->bss_param.beacon_interval))
6451                         goto nla_put_failure;
6452
6453                 nla_nest_end(msg, bss_param);
6454         }
6455         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
6456             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
6457                     sizeof(struct nl80211_sta_flag_update),
6458                     &sinfo->sta_flags))
6459                 goto nla_put_failure;
6460
6461         PUT_SINFO_U64(T_OFFSET, t_offset);
6462         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
6463         PUT_SINFO_U64(BEACON_RX, rx_beacon);
6464         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
6465         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
6466         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
6467         if (wiphy_ext_feature_isset(&rdev->wiphy,
6468                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
6469                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
6470                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
6471         }
6472
6473 #undef PUT_SINFO
6474 #undef PUT_SINFO_U64
6475
6476         if (sinfo->pertid) {
6477                 struct nlattr *tidsattr;
6478                 int tid;
6479
6480                 tidsattr = nla_nest_start_noflag(msg,
6481                                                  NL80211_STA_INFO_TID_STATS);
6482                 if (!tidsattr)
6483                         goto nla_put_failure;
6484
6485                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
6486                         struct cfg80211_tid_stats *tidstats;
6487                         struct nlattr *tidattr;
6488
6489                         tidstats = &sinfo->pertid[tid];
6490
6491                         if (!tidstats->filled)
6492                                 continue;
6493
6494                         tidattr = nla_nest_start_noflag(msg, tid + 1);
6495                         if (!tidattr)
6496                                 goto nla_put_failure;
6497
6498 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
6499         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
6500             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
6501                               tidstats->memb, NL80211_TID_STATS_PAD))   \
6502                 goto nla_put_failure;                                   \
6503         } while (0)
6504
6505                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
6506                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
6507                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
6508                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
6509
6510 #undef PUT_TIDVAL_U64
6511                         if ((tidstats->filled &
6512                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
6513                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
6514                                                    NL80211_TID_STATS_TXQ_STATS))
6515                                 goto nla_put_failure;
6516
6517                         nla_nest_end(msg, tidattr);
6518                 }
6519
6520                 nla_nest_end(msg, tidsattr);
6521         }
6522
6523         nla_nest_end(msg, sinfoattr);
6524
6525         if (sinfo->assoc_req_ies_len &&
6526             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
6527                     sinfo->assoc_req_ies))
6528                 goto nla_put_failure;
6529
6530         cfg80211_sinfo_release_content(sinfo);
6531         genlmsg_end(msg, hdr);
6532         return 0;
6533
6534  nla_put_failure:
6535         cfg80211_sinfo_release_content(sinfo);
6536         genlmsg_cancel(msg, hdr);
6537         return -EMSGSIZE;
6538 }
6539
6540 static int nl80211_dump_station(struct sk_buff *skb,
6541                                 struct netlink_callback *cb)
6542 {
6543         struct station_info sinfo;
6544         struct cfg80211_registered_device *rdev;
6545         struct wireless_dev *wdev;
6546         u8 mac_addr[ETH_ALEN];
6547         int sta_idx = cb->args[2];
6548         int err;
6549
6550         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
6551         if (err)
6552                 return err;
6553         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6554         __acquire(&rdev->wiphy.mtx);
6555
6556         if (!wdev->netdev) {
6557                 err = -EINVAL;
6558                 goto out_err;
6559         }
6560
6561         if (!rdev->ops->dump_station) {
6562                 err = -EOPNOTSUPP;
6563                 goto out_err;
6564         }
6565
6566         while (1) {
6567                 memset(&sinfo, 0, sizeof(sinfo));
6568                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6569                                         mac_addr, &sinfo);
6570                 if (err == -ENOENT)
6571                         break;
6572                 if (err)
6573                         goto out_err;
6574
6575                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6576                                 NETLINK_CB(cb->skb).portid,
6577                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6578                                 rdev, wdev->netdev, mac_addr,
6579                                 &sinfo) < 0)
6580                         goto out;
6581
6582                 sta_idx++;
6583         }
6584
6585  out:
6586         cb->args[2] = sta_idx;
6587         err = skb->len;
6588  out_err:
6589         wiphy_unlock(&rdev->wiphy);
6590
6591         return err;
6592 }
6593
6594 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6595 {
6596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6597         struct net_device *dev = info->user_ptr[1];
6598         struct station_info sinfo;
6599         struct sk_buff *msg;
6600         u8 *mac_addr = NULL;
6601         int err;
6602
6603         memset(&sinfo, 0, sizeof(sinfo));
6604
6605         if (!info->attrs[NL80211_ATTR_MAC])
6606                 return -EINVAL;
6607
6608         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6609
6610         if (!rdev->ops->get_station)
6611                 return -EOPNOTSUPP;
6612
6613         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6614         if (err)
6615                 return err;
6616
6617         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6618         if (!msg) {
6619                 cfg80211_sinfo_release_content(&sinfo);
6620                 return -ENOMEM;
6621         }
6622
6623         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6624                                  info->snd_portid, info->snd_seq, 0,
6625                                  rdev, dev, mac_addr, &sinfo) < 0) {
6626                 nlmsg_free(msg);
6627                 return -ENOBUFS;
6628         }
6629
6630         return genlmsg_reply(msg, info);
6631 }
6632
6633 int cfg80211_check_station_change(struct wiphy *wiphy,
6634                                   struct station_parameters *params,
6635                                   enum cfg80211_station_type statype)
6636 {
6637         if (params->listen_interval != -1 &&
6638             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6639                 return -EINVAL;
6640
6641         if (params->support_p2p_ps != -1 &&
6642             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6643                 return -EINVAL;
6644
6645         if (params->aid &&
6646             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6647             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6648                 return -EINVAL;
6649
6650         /* When you run into this, adjust the code below for the new flag */
6651         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6652
6653         switch (statype) {
6654         case CFG80211_STA_MESH_PEER_KERNEL:
6655         case CFG80211_STA_MESH_PEER_USER:
6656                 /*
6657                  * No ignoring the TDLS flag here -- the userspace mesh
6658                  * code doesn't have the bug of including TDLS in the
6659                  * mask everywhere.
6660                  */
6661                 if (params->sta_flags_mask &
6662                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6663                                   BIT(NL80211_STA_FLAG_MFP) |
6664                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6665                         return -EINVAL;
6666                 break;
6667         case CFG80211_STA_TDLS_PEER_SETUP:
6668         case CFG80211_STA_TDLS_PEER_ACTIVE:
6669                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6670                         return -EINVAL;
6671                 /* ignore since it can't change */
6672                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6673                 break;
6674         default:
6675                 /* disallow mesh-specific things */
6676                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6677                         return -EINVAL;
6678                 if (params->local_pm)
6679                         return -EINVAL;
6680                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6681                         return -EINVAL;
6682         }
6683
6684         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6685             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6686                 /* TDLS can't be set, ... */
6687                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6688                         return -EINVAL;
6689                 /*
6690                  * ... but don't bother the driver with it. This works around
6691                  * a hostapd/wpa_supplicant issue -- it always includes the
6692                  * TLDS_PEER flag in the mask even for AP mode.
6693                  */
6694                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6695         }
6696
6697         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6698             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6699                 /* reject other things that can't change */
6700                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6701                         return -EINVAL;
6702                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6703                         return -EINVAL;
6704                 if (params->link_sta_params.supported_rates)
6705                         return -EINVAL;
6706                 if (params->ext_capab || params->link_sta_params.ht_capa ||
6707                     params->link_sta_params.vht_capa ||
6708                     params->link_sta_params.he_capa ||
6709                     params->link_sta_params.eht_capa)
6710                         return -EINVAL;
6711         }
6712
6713         if (statype != CFG80211_STA_AP_CLIENT &&
6714             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6715                 if (params->vlan)
6716                         return -EINVAL;
6717         }
6718
6719         switch (statype) {
6720         case CFG80211_STA_AP_MLME_CLIENT:
6721                 /* Use this only for authorizing/unauthorizing a station */
6722                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6723                         return -EOPNOTSUPP;
6724                 break;
6725         case CFG80211_STA_AP_CLIENT:
6726         case CFG80211_STA_AP_CLIENT_UNASSOC:
6727                 /* accept only the listed bits */
6728                 if (params->sta_flags_mask &
6729                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6730                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6731                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6732                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6733                                   BIT(NL80211_STA_FLAG_WME) |
6734                                   BIT(NL80211_STA_FLAG_MFP)))
6735                         return -EINVAL;
6736
6737                 /* but authenticated/associated only if driver handles it */
6738                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6739                     params->sta_flags_mask &
6740                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6741                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6742                         return -EINVAL;
6743                 break;
6744         case CFG80211_STA_IBSS:
6745         case CFG80211_STA_AP_STA:
6746                 /* reject any changes other than AUTHORIZED */
6747                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6748                         return -EINVAL;
6749                 break;
6750         case CFG80211_STA_TDLS_PEER_SETUP:
6751                 /* reject any changes other than AUTHORIZED or WME */
6752                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6753                                                BIT(NL80211_STA_FLAG_WME)))
6754                         return -EINVAL;
6755                 /* force (at least) rates when authorizing */
6756                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6757                     !params->link_sta_params.supported_rates)
6758                         return -EINVAL;
6759                 break;
6760         case CFG80211_STA_TDLS_PEER_ACTIVE:
6761                 /* reject any changes */
6762                 return -EINVAL;
6763         case CFG80211_STA_MESH_PEER_KERNEL:
6764                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6765                         return -EINVAL;
6766                 break;
6767         case CFG80211_STA_MESH_PEER_USER:
6768                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6769                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6770                         return -EINVAL;
6771                 break;
6772         }
6773
6774         /*
6775          * Older kernel versions ignored this attribute entirely, so don't
6776          * reject attempts to update it but mark it as unused instead so the
6777          * driver won't look at the data.
6778          */
6779         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6780             statype != CFG80211_STA_TDLS_PEER_SETUP)
6781                 params->link_sta_params.opmode_notif_used = false;
6782
6783         return 0;
6784 }
6785 EXPORT_SYMBOL(cfg80211_check_station_change);
6786
6787 /*
6788  * Get vlan interface making sure it is running and on the right wiphy.
6789  */
6790 static struct net_device *get_vlan(struct genl_info *info,
6791                                    struct cfg80211_registered_device *rdev)
6792 {
6793         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6794         struct net_device *v;
6795         int ret;
6796
6797         if (!vlanattr)
6798                 return NULL;
6799
6800         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6801         if (!v)
6802                 return ERR_PTR(-ENODEV);
6803
6804         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6805                 ret = -EINVAL;
6806                 goto error;
6807         }
6808
6809         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6810             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6811             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6812                 ret = -EINVAL;
6813                 goto error;
6814         }
6815
6816         if (!netif_running(v)) {
6817                 ret = -ENETDOWN;
6818                 goto error;
6819         }
6820
6821         return v;
6822  error:
6823         dev_put(v);
6824         return ERR_PTR(ret);
6825 }
6826
6827 static int nl80211_parse_sta_wme(struct genl_info *info,
6828                                  struct station_parameters *params)
6829 {
6830         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6831         struct nlattr *nla;
6832         int err;
6833
6834         /* parse WME attributes if present */
6835         if (!info->attrs[NL80211_ATTR_STA_WME])
6836                 return 0;
6837
6838         nla = info->attrs[NL80211_ATTR_STA_WME];
6839         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6840                                           nl80211_sta_wme_policy,
6841                                           info->extack);
6842         if (err)
6843                 return err;
6844
6845         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6846                 params->uapsd_queues = nla_get_u8(
6847                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6848         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6849                 return -EINVAL;
6850
6851         if (tb[NL80211_STA_WME_MAX_SP])
6852                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6853
6854         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6855                 return -EINVAL;
6856
6857         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6858
6859         return 0;
6860 }
6861
6862 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6863                                       struct station_parameters *params)
6864 {
6865         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6866                 params->supported_channels =
6867                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6868                 params->supported_channels_len =
6869                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6870                 /*
6871                  * Need to include at least one (first channel, number of
6872                  * channels) tuple for each subband (checked in policy),
6873                  * and must have proper tuples for the rest of the data as well.
6874                  */
6875                 if (params->supported_channels_len % 2)
6876                         return -EINVAL;
6877         }
6878
6879         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6880                 params->supported_oper_classes =
6881                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6882                 params->supported_oper_classes_len =
6883                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6884         }
6885         return 0;
6886 }
6887
6888 static int nl80211_set_station_tdls(struct genl_info *info,
6889                                     struct station_parameters *params)
6890 {
6891         int err;
6892         /* Dummy STA entry gets updated once the peer capabilities are known */
6893         if (info->attrs[NL80211_ATTR_PEER_AID])
6894                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6895         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6896                 params->link_sta_params.ht_capa =
6897                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6898         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6899                 params->link_sta_params.vht_capa =
6900                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6901         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6902                 params->link_sta_params.he_capa =
6903                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6904                 params->link_sta_params.he_capa_len =
6905                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6906
6907                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
6908                         params->link_sta_params.eht_capa =
6909                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6910                         params->link_sta_params.eht_capa_len =
6911                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
6912
6913                         if (!ieee80211_eht_capa_size_ok((const u8 *)params->link_sta_params.he_capa,
6914                                                         (const u8 *)params->link_sta_params.eht_capa,
6915                                                         params->link_sta_params.eht_capa_len,
6916                                                         false))
6917                                 return -EINVAL;
6918                 }
6919         }
6920
6921         err = nl80211_parse_sta_channel_info(info, params);
6922         if (err)
6923                 return err;
6924
6925         return nl80211_parse_sta_wme(info, params);
6926 }
6927
6928 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6929                                              struct sta_txpwr *txpwr,
6930                                              bool *txpwr_set)
6931 {
6932         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6933         int idx;
6934
6935         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6936                 if (!rdev->ops->set_tx_power ||
6937                     !wiphy_ext_feature_isset(&rdev->wiphy,
6938                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6939                         return -EOPNOTSUPP;
6940
6941                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6942                 txpwr->type = nla_get_u8(info->attrs[idx]);
6943
6944                 if (txpwr->type == NL80211_TX_POWER_LIMITED) {
6945                         idx = NL80211_ATTR_STA_TX_POWER;
6946
6947                         if (info->attrs[idx])
6948                                 txpwr->power = nla_get_s16(info->attrs[idx]);
6949                         else
6950                                 return -EINVAL;
6951                 }
6952
6953                 *txpwr_set = true;
6954         } else {
6955                 *txpwr_set = false;
6956         }
6957
6958         return 0;
6959 }
6960
6961 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6962 {
6963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6964         struct net_device *dev = info->user_ptr[1];
6965         struct station_parameters params;
6966         u8 *mac_addr;
6967         int err;
6968
6969         memset(&params, 0, sizeof(params));
6970
6971         if (!rdev->ops->change_station)
6972                 return -EOPNOTSUPP;
6973
6974         /*
6975          * AID and listen_interval properties can be set only for unassociated
6976          * station. Include these parameters here and will check them in
6977          * cfg80211_check_station_change().
6978          */
6979         if (info->attrs[NL80211_ATTR_STA_AID])
6980                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6981
6982         if (info->attrs[NL80211_ATTR_VLAN_ID])
6983                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6984
6985         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6986                 params.listen_interval =
6987                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6988         else
6989                 params.listen_interval = -1;
6990
6991         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6992                 params.support_p2p_ps =
6993                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6994         else
6995                 params.support_p2p_ps = -1;
6996
6997         if (!info->attrs[NL80211_ATTR_MAC])
6998                 return -EINVAL;
6999
7000         params.link_sta_params.link_id =
7001                 nl80211_link_id_or_invalid(info->attrs);
7002
7003         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7004                 /* If MLD_ADDR attribute is set then this is an MLD station
7005                  * and the MLD_ADDR attribute holds the MLD address and the
7006                  * MAC attribute holds for the LINK address.
7007                  * In that case, the link_id is also expected to be valid.
7008                  */
7009                 if (params.link_sta_params.link_id < 0)
7010                         return -EINVAL;
7011
7012                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7013                 params.link_sta_params.mld_mac = mac_addr;
7014                 params.link_sta_params.link_mac =
7015                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7016                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7017                         return -EINVAL;
7018         } else {
7019                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7020         }
7021
7022
7023         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
7024                 params.link_sta_params.supported_rates =
7025                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7026                 params.link_sta_params.supported_rates_len =
7027                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7028         }
7029
7030         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7031                 params.capability =
7032                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7033                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7034         }
7035
7036         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7037                 params.ext_capab =
7038                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7039                 params.ext_capab_len =
7040                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7041         }
7042
7043         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7044                 return -EINVAL;
7045
7046         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7047                 params.plink_action =
7048                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7049
7050         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
7051                 params.plink_state =
7052                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
7053                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
7054                         params.peer_aid = nla_get_u16(
7055                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
7056                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
7057         }
7058
7059         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
7060                 params.local_pm = nla_get_u32(
7061                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
7062
7063         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7064                 params.link_sta_params.opmode_notif_used = true;
7065                 params.link_sta_params.opmode_notif =
7066                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7067         }
7068
7069         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7070                 params.link_sta_params.he_6ghz_capa =
7071                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7072
7073         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7074                 params.airtime_weight =
7075                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7076
7077         if (params.airtime_weight &&
7078             !wiphy_ext_feature_isset(&rdev->wiphy,
7079                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7080                 return -EOPNOTSUPP;
7081
7082         err = nl80211_parse_sta_txpower_setting(info,
7083                                                 &params.link_sta_params.txpwr,
7084                                                 &params.link_sta_params.txpwr_set);
7085         if (err)
7086                 return err;
7087
7088         /* Include parameters for TDLS peer (will check later) */
7089         err = nl80211_set_station_tdls(info, &params);
7090         if (err)
7091                 return err;
7092
7093         params.vlan = get_vlan(info, rdev);
7094         if (IS_ERR(params.vlan))
7095                 return PTR_ERR(params.vlan);
7096
7097         switch (dev->ieee80211_ptr->iftype) {
7098         case NL80211_IFTYPE_AP:
7099         case NL80211_IFTYPE_AP_VLAN:
7100         case NL80211_IFTYPE_P2P_GO:
7101         case NL80211_IFTYPE_P2P_CLIENT:
7102         case NL80211_IFTYPE_STATION:
7103         case NL80211_IFTYPE_ADHOC:
7104         case NL80211_IFTYPE_MESH_POINT:
7105                 break;
7106         default:
7107                 err = -EOPNOTSUPP;
7108                 goto out_put_vlan;
7109         }
7110
7111         /* driver will call cfg80211_check_station_change() */
7112         wdev_lock(dev->ieee80211_ptr);
7113         err = rdev_change_station(rdev, dev, mac_addr, &params);
7114         wdev_unlock(dev->ieee80211_ptr);
7115
7116  out_put_vlan:
7117         dev_put(params.vlan);
7118
7119         return err;
7120 }
7121
7122 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
7123 {
7124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7125         int err;
7126         struct net_device *dev = info->user_ptr[1];
7127         struct wireless_dev *wdev = dev->ieee80211_ptr;
7128         struct station_parameters params;
7129         u8 *mac_addr = NULL;
7130         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
7131                          BIT(NL80211_STA_FLAG_ASSOCIATED);
7132
7133         memset(&params, 0, sizeof(params));
7134
7135         if (!rdev->ops->add_station)
7136                 return -EOPNOTSUPP;
7137
7138         if (!info->attrs[NL80211_ATTR_MAC])
7139                 return -EINVAL;
7140
7141         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
7142                 return -EINVAL;
7143
7144         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
7145                 return -EINVAL;
7146
7147         if (!info->attrs[NL80211_ATTR_STA_AID] &&
7148             !info->attrs[NL80211_ATTR_PEER_AID])
7149                 return -EINVAL;
7150
7151         params.link_sta_params.link_id =
7152                 nl80211_link_id_or_invalid(info->attrs);
7153
7154         if (info->attrs[NL80211_ATTR_MLD_ADDR]) {
7155                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
7156                 params.link_sta_params.mld_mac = mac_addr;
7157                 params.link_sta_params.link_mac =
7158                         nla_data(info->attrs[NL80211_ATTR_MAC]);
7159                 if (!is_valid_ether_addr(params.link_sta_params.link_mac))
7160                         return -EINVAL;
7161         } else {
7162                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
7163         }
7164
7165         params.link_sta_params.supported_rates =
7166                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7167         params.link_sta_params.supported_rates_len =
7168                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
7169         params.listen_interval =
7170                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
7171
7172         if (info->attrs[NL80211_ATTR_VLAN_ID])
7173                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
7174
7175         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
7176                 params.support_p2p_ps =
7177                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
7178         } else {
7179                 /*
7180                  * if not specified, assume it's supported for P2P GO interface,
7181                  * and is NOT supported for AP interface
7182                  */
7183                 params.support_p2p_ps =
7184                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
7185         }
7186
7187         if (info->attrs[NL80211_ATTR_PEER_AID])
7188                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
7189         else
7190                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
7191
7192         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
7193                 params.capability =
7194                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
7195                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
7196         }
7197
7198         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
7199                 params.ext_capab =
7200                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7201                 params.ext_capab_len =
7202                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
7203         }
7204
7205         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
7206                 params.link_sta_params.ht_capa =
7207                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
7208
7209         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
7210                 params.link_sta_params.vht_capa =
7211                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
7212
7213         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
7214                 params.link_sta_params.he_capa =
7215                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7216                 params.link_sta_params.he_capa_len =
7217                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
7218
7219                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
7220                         params.link_sta_params.eht_capa =
7221                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7222                         params.link_sta_params.eht_capa_len =
7223                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
7224
7225                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.link_sta_params.he_capa,
7226                                                         (const u8 *)params.link_sta_params.eht_capa,
7227                                                         params.link_sta_params.eht_capa_len,
7228                                                         false))
7229                                 return -EINVAL;
7230                 }
7231         }
7232
7233         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
7234                 params.link_sta_params.he_6ghz_capa =
7235                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
7236
7237         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
7238                 params.link_sta_params.opmode_notif_used = true;
7239                 params.link_sta_params.opmode_notif =
7240                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
7241         }
7242
7243         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
7244                 params.plink_action =
7245                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
7246
7247         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
7248                 params.airtime_weight =
7249                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
7250
7251         if (params.airtime_weight &&
7252             !wiphy_ext_feature_isset(&rdev->wiphy,
7253                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
7254                 return -EOPNOTSUPP;
7255
7256         err = nl80211_parse_sta_txpower_setting(info,
7257                                                 &params.link_sta_params.txpwr,
7258                                                 &params.link_sta_params.txpwr_set);
7259         if (err)
7260                 return err;
7261
7262         err = nl80211_parse_sta_channel_info(info, &params);
7263         if (err)
7264                 return err;
7265
7266         err = nl80211_parse_sta_wme(info, &params);
7267         if (err)
7268                 return err;
7269
7270         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
7271                 return -EINVAL;
7272
7273         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
7274          * as userspace might just pass through the capabilities from the IEs
7275          * directly, rather than enforcing this restriction and returning an
7276          * error in this case.
7277          */
7278         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
7279                 params.link_sta_params.ht_capa = NULL;
7280                 params.link_sta_params.vht_capa = NULL;
7281
7282                 /* HE and EHT require WME */
7283                 if (params.link_sta_params.he_capa_len ||
7284                     params.link_sta_params.he_6ghz_capa ||
7285                     params.link_sta_params.eht_capa_len)
7286                         return -EINVAL;
7287         }
7288
7289         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
7290         if (params.link_sta_params.he_6ghz_capa &&
7291             (params.link_sta_params.ht_capa || params.link_sta_params.vht_capa))
7292                 return -EINVAL;
7293
7294         /* When you run into this, adjust the code below for the new flag */
7295         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
7296
7297         switch (dev->ieee80211_ptr->iftype) {
7298         case NL80211_IFTYPE_AP:
7299         case NL80211_IFTYPE_AP_VLAN:
7300         case NL80211_IFTYPE_P2P_GO:
7301                 /* ignore WME attributes if iface/sta is not capable */
7302                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
7303                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
7304                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7305
7306                 /* TDLS peers cannot be added */
7307                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7308                     info->attrs[NL80211_ATTR_PEER_AID])
7309                         return -EINVAL;
7310                 /* but don't bother the driver with it */
7311                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
7312
7313                 /* allow authenticated/associated only if driver handles it */
7314                 if (!(rdev->wiphy.features &
7315                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
7316                     params.sta_flags_mask & auth_assoc)
7317                         return -EINVAL;
7318
7319                 /* Older userspace, or userspace wanting to be compatible with
7320                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
7321                  * and assoc flags in the mask, but assumes the station will be
7322                  * added as associated anyway since this was the required driver
7323                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
7324                  * introduced.
7325                  * In order to not bother drivers with this quirk in the API
7326                  * set the flags in both the mask and set for new stations in
7327                  * this case.
7328                  */
7329                 if (!(params.sta_flags_mask & auth_assoc)) {
7330                         params.sta_flags_mask |= auth_assoc;
7331                         params.sta_flags_set |= auth_assoc;
7332                 }
7333
7334                 /* must be last in here for error handling */
7335                 params.vlan = get_vlan(info, rdev);
7336                 if (IS_ERR(params.vlan))
7337                         return PTR_ERR(params.vlan);
7338                 break;
7339         case NL80211_IFTYPE_MESH_POINT:
7340                 /* ignore uAPSD data */
7341                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7342
7343                 /* associated is disallowed */
7344                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
7345                         return -EINVAL;
7346                 /* TDLS peers cannot be added */
7347                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
7348                     info->attrs[NL80211_ATTR_PEER_AID])
7349                         return -EINVAL;
7350                 break;
7351         case NL80211_IFTYPE_STATION:
7352         case NL80211_IFTYPE_P2P_CLIENT:
7353                 /* ignore uAPSD data */
7354                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
7355
7356                 /* these are disallowed */
7357                 if (params.sta_flags_mask &
7358                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
7359                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
7360                         return -EINVAL;
7361                 /* Only TDLS peers can be added */
7362                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
7363                         return -EINVAL;
7364                 /* Can only add if TDLS ... */
7365                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
7366                         return -EOPNOTSUPP;
7367                 /* ... with external setup is supported */
7368                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
7369                         return -EOPNOTSUPP;
7370                 /*
7371                  * Older wpa_supplicant versions always mark the TDLS peer
7372                  * as authorized, but it shouldn't yet be.
7373                  */
7374                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
7375                 break;
7376         default:
7377                 return -EOPNOTSUPP;
7378         }
7379
7380         /* be aware of params.vlan when changing code here */
7381
7382         wdev_lock(dev->ieee80211_ptr);
7383         if (wdev->valid_links) {
7384                 if (params.link_sta_params.link_id < 0) {
7385                         err = -EINVAL;
7386                         goto out;
7387                 }
7388                 if (!(wdev->valid_links & BIT(params.link_sta_params.link_id))) {
7389                         err = -ENOLINK;
7390                         goto out;
7391                 }
7392         } else {
7393                 if (params.link_sta_params.link_id >= 0) {
7394                         err = -EINVAL;
7395                         goto out;
7396                 }
7397         }
7398         err = rdev_add_station(rdev, dev, mac_addr, &params);
7399 out:
7400         wdev_unlock(dev->ieee80211_ptr);
7401         dev_put(params.vlan);
7402         return err;
7403 }
7404
7405 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
7406 {
7407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7408         struct net_device *dev = info->user_ptr[1];
7409         struct station_del_parameters params;
7410         int ret;
7411
7412         memset(&params, 0, sizeof(params));
7413
7414         if (info->attrs[NL80211_ATTR_MAC])
7415                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
7416
7417         switch (dev->ieee80211_ptr->iftype) {
7418         case NL80211_IFTYPE_AP:
7419         case NL80211_IFTYPE_AP_VLAN:
7420         case NL80211_IFTYPE_MESH_POINT:
7421         case NL80211_IFTYPE_P2P_GO:
7422                 /* always accept these */
7423                 break;
7424         case NL80211_IFTYPE_ADHOC:
7425                 /* conditionally accept */
7426                 if (wiphy_ext_feature_isset(&rdev->wiphy,
7427                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
7428                         break;
7429                 return -EINVAL;
7430         default:
7431                 return -EINVAL;
7432         }
7433
7434         if (!rdev->ops->del_station)
7435                 return -EOPNOTSUPP;
7436
7437         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
7438                 params.subtype =
7439                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
7440                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
7441                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
7442                         return -EINVAL;
7443         } else {
7444                 /* Default to Deauthentication frame */
7445                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
7446         }
7447
7448         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
7449                 params.reason_code =
7450                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7451                 if (params.reason_code == 0)
7452                         return -EINVAL; /* 0 is reserved */
7453         } else {
7454                 /* Default to reason code 2 */
7455                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
7456         }
7457
7458         wdev_lock(dev->ieee80211_ptr);
7459         ret = rdev_del_station(rdev, dev, &params);
7460         wdev_unlock(dev->ieee80211_ptr);
7461
7462         return ret;
7463 }
7464
7465 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
7466                                 int flags, struct net_device *dev,
7467                                 u8 *dst, u8 *next_hop,
7468                                 struct mpath_info *pinfo)
7469 {
7470         void *hdr;
7471         struct nlattr *pinfoattr;
7472
7473         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
7474         if (!hdr)
7475                 return -1;
7476
7477         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7478             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
7479             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
7480             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
7481                 goto nla_put_failure;
7482
7483         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
7484         if (!pinfoattr)
7485                 goto nla_put_failure;
7486         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
7487             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
7488                         pinfo->frame_qlen))
7489                 goto nla_put_failure;
7490         if (((pinfo->filled & MPATH_INFO_SN) &&
7491              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
7492             ((pinfo->filled & MPATH_INFO_METRIC) &&
7493              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
7494                          pinfo->metric)) ||
7495             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
7496              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
7497                          pinfo->exptime)) ||
7498             ((pinfo->filled & MPATH_INFO_FLAGS) &&
7499              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
7500                         pinfo->flags)) ||
7501             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
7502              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
7503                          pinfo->discovery_timeout)) ||
7504             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
7505              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
7506                         pinfo->discovery_retries)) ||
7507             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
7508              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
7509                         pinfo->hop_count)) ||
7510             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
7511              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
7512                          pinfo->path_change_count)))
7513                 goto nla_put_failure;
7514
7515         nla_nest_end(msg, pinfoattr);
7516
7517         genlmsg_end(msg, hdr);
7518         return 0;
7519
7520  nla_put_failure:
7521         genlmsg_cancel(msg, hdr);
7522         return -EMSGSIZE;
7523 }
7524
7525 static int nl80211_dump_mpath(struct sk_buff *skb,
7526                               struct netlink_callback *cb)
7527 {
7528         struct mpath_info pinfo;
7529         struct cfg80211_registered_device *rdev;
7530         struct wireless_dev *wdev;
7531         u8 dst[ETH_ALEN];
7532         u8 next_hop[ETH_ALEN];
7533         int path_idx = cb->args[2];
7534         int err;
7535
7536         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7537         if (err)
7538                 return err;
7539         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7540         __acquire(&rdev->wiphy.mtx);
7541
7542         if (!rdev->ops->dump_mpath) {
7543                 err = -EOPNOTSUPP;
7544                 goto out_err;
7545         }
7546
7547         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7548                 err = -EOPNOTSUPP;
7549                 goto out_err;
7550         }
7551
7552         while (1) {
7553                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
7554                                       next_hop, &pinfo);
7555                 if (err == -ENOENT)
7556                         break;
7557                 if (err)
7558                         goto out_err;
7559
7560                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7561                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7562                                        wdev->netdev, dst, next_hop,
7563                                        &pinfo) < 0)
7564                         goto out;
7565
7566                 path_idx++;
7567         }
7568
7569  out:
7570         cb->args[2] = path_idx;
7571         err = skb->len;
7572  out_err:
7573         wiphy_unlock(&rdev->wiphy);
7574         return err;
7575 }
7576
7577 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
7578 {
7579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7580         int err;
7581         struct net_device *dev = info->user_ptr[1];
7582         struct mpath_info pinfo;
7583         struct sk_buff *msg;
7584         u8 *dst = NULL;
7585         u8 next_hop[ETH_ALEN];
7586
7587         memset(&pinfo, 0, sizeof(pinfo));
7588
7589         if (!info->attrs[NL80211_ATTR_MAC])
7590                 return -EINVAL;
7591
7592         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7593
7594         if (!rdev->ops->get_mpath)
7595                 return -EOPNOTSUPP;
7596
7597         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7598                 return -EOPNOTSUPP;
7599
7600         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
7601         if (err)
7602                 return err;
7603
7604         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7605         if (!msg)
7606                 return -ENOMEM;
7607
7608         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7609                                  dev, dst, next_hop, &pinfo) < 0) {
7610                 nlmsg_free(msg);
7611                 return -ENOBUFS;
7612         }
7613
7614         return genlmsg_reply(msg, info);
7615 }
7616
7617 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
7618 {
7619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7620         struct net_device *dev = info->user_ptr[1];
7621         u8 *dst = NULL;
7622         u8 *next_hop = NULL;
7623
7624         if (!info->attrs[NL80211_ATTR_MAC])
7625                 return -EINVAL;
7626
7627         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7628                 return -EINVAL;
7629
7630         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7631         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7632
7633         if (!rdev->ops->change_mpath)
7634                 return -EOPNOTSUPP;
7635
7636         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7637                 return -EOPNOTSUPP;
7638
7639         return rdev_change_mpath(rdev, dev, dst, next_hop);
7640 }
7641
7642 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7643 {
7644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7645         struct net_device *dev = info->user_ptr[1];
7646         u8 *dst = NULL;
7647         u8 *next_hop = NULL;
7648
7649         if (!info->attrs[NL80211_ATTR_MAC])
7650                 return -EINVAL;
7651
7652         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7653                 return -EINVAL;
7654
7655         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7656         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7657
7658         if (!rdev->ops->add_mpath)
7659                 return -EOPNOTSUPP;
7660
7661         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7662                 return -EOPNOTSUPP;
7663
7664         return rdev_add_mpath(rdev, dev, dst, next_hop);
7665 }
7666
7667 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7668 {
7669         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7670         struct net_device *dev = info->user_ptr[1];
7671         u8 *dst = NULL;
7672
7673         if (info->attrs[NL80211_ATTR_MAC])
7674                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7675
7676         if (!rdev->ops->del_mpath)
7677                 return -EOPNOTSUPP;
7678
7679         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7680                 return -EOPNOTSUPP;
7681
7682         return rdev_del_mpath(rdev, dev, dst);
7683 }
7684
7685 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7686 {
7687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7688         int err;
7689         struct net_device *dev = info->user_ptr[1];
7690         struct mpath_info pinfo;
7691         struct sk_buff *msg;
7692         u8 *dst = NULL;
7693         u8 mpp[ETH_ALEN];
7694
7695         memset(&pinfo, 0, sizeof(pinfo));
7696
7697         if (!info->attrs[NL80211_ATTR_MAC])
7698                 return -EINVAL;
7699
7700         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7701
7702         if (!rdev->ops->get_mpp)
7703                 return -EOPNOTSUPP;
7704
7705         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7706                 return -EOPNOTSUPP;
7707
7708         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7709         if (err)
7710                 return err;
7711
7712         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7713         if (!msg)
7714                 return -ENOMEM;
7715
7716         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7717                                dev, dst, mpp, &pinfo) < 0) {
7718                 nlmsg_free(msg);
7719                 return -ENOBUFS;
7720         }
7721
7722         return genlmsg_reply(msg, info);
7723 }
7724
7725 static int nl80211_dump_mpp(struct sk_buff *skb,
7726                             struct netlink_callback *cb)
7727 {
7728         struct mpath_info pinfo;
7729         struct cfg80211_registered_device *rdev;
7730         struct wireless_dev *wdev;
7731         u8 dst[ETH_ALEN];
7732         u8 mpp[ETH_ALEN];
7733         int path_idx = cb->args[2];
7734         int err;
7735
7736         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
7737         if (err)
7738                 return err;
7739         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7740         __acquire(&rdev->wiphy.mtx);
7741
7742         if (!rdev->ops->dump_mpp) {
7743                 err = -EOPNOTSUPP;
7744                 goto out_err;
7745         }
7746
7747         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7748                 err = -EOPNOTSUPP;
7749                 goto out_err;
7750         }
7751
7752         while (1) {
7753                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7754                                     mpp, &pinfo);
7755                 if (err == -ENOENT)
7756                         break;
7757                 if (err)
7758                         goto out_err;
7759
7760                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7761                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7762                                        wdev->netdev, dst, mpp,
7763                                        &pinfo) < 0)
7764                         goto out;
7765
7766                 path_idx++;
7767         }
7768
7769  out:
7770         cb->args[2] = path_idx;
7771         err = skb->len;
7772  out_err:
7773         wiphy_unlock(&rdev->wiphy);
7774         return err;
7775 }
7776
7777 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7778 {
7779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7780         struct net_device *dev = info->user_ptr[1];
7781         struct wireless_dev *wdev = dev->ieee80211_ptr;
7782         struct bss_parameters params;
7783         int err;
7784
7785         memset(&params, 0, sizeof(params));
7786         /* default to not changing parameters */
7787         params.use_cts_prot = -1;
7788         params.use_short_preamble = -1;
7789         params.use_short_slot_time = -1;
7790         params.ap_isolate = -1;
7791         params.ht_opmode = -1;
7792         params.p2p_ctwindow = -1;
7793         params.p2p_opp_ps = -1;
7794
7795         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7796                 params.use_cts_prot =
7797                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7798         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7799                 params.use_short_preamble =
7800                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7801         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7802                 params.use_short_slot_time =
7803                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7804         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7805                 params.basic_rates =
7806                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7807                 params.basic_rates_len =
7808                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7809         }
7810         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7811                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7812         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7813                 params.ht_opmode =
7814                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7815
7816         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7817                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7818                         return -EINVAL;
7819                 params.p2p_ctwindow =
7820                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7821                 if (params.p2p_ctwindow != 0 &&
7822                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7823                         return -EINVAL;
7824         }
7825
7826         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7827                 u8 tmp;
7828
7829                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7830                         return -EINVAL;
7831                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7832                 params.p2p_opp_ps = tmp;
7833                 if (params.p2p_opp_ps &&
7834                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7835                         return -EINVAL;
7836         }
7837
7838         if (!rdev->ops->change_bss)
7839                 return -EOPNOTSUPP;
7840
7841         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7842             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7843                 return -EOPNOTSUPP;
7844
7845         wdev_lock(wdev);
7846         err = rdev_change_bss(rdev, dev, &params);
7847         wdev_unlock(wdev);
7848
7849         return err;
7850 }
7851
7852 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7853 {
7854         char *data = NULL;
7855         bool is_indoor;
7856         enum nl80211_user_reg_hint_type user_reg_hint_type;
7857         u32 owner_nlportid;
7858
7859         /*
7860          * You should only get this when cfg80211 hasn't yet initialized
7861          * completely when built-in to the kernel right between the time
7862          * window between nl80211_init() and regulatory_init(), if that is
7863          * even possible.
7864          */
7865         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7866                 return -EINPROGRESS;
7867
7868         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7869                 user_reg_hint_type =
7870                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7871         else
7872                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7873
7874         switch (user_reg_hint_type) {
7875         case NL80211_USER_REG_HINT_USER:
7876         case NL80211_USER_REG_HINT_CELL_BASE:
7877                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7878                         return -EINVAL;
7879
7880                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7881                 return regulatory_hint_user(data, user_reg_hint_type);
7882         case NL80211_USER_REG_HINT_INDOOR:
7883                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7884                         owner_nlportid = info->snd_portid;
7885                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7886                 } else {
7887                         owner_nlportid = 0;
7888                         is_indoor = true;
7889                 }
7890
7891                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7892         default:
7893                 return -EINVAL;
7894         }
7895 }
7896
7897 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7898 {
7899         return reg_reload_regdb();
7900 }
7901
7902 static int nl80211_get_mesh_config(struct sk_buff *skb,
7903                                    struct genl_info *info)
7904 {
7905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7906         struct net_device *dev = info->user_ptr[1];
7907         struct wireless_dev *wdev = dev->ieee80211_ptr;
7908         struct mesh_config cur_params;
7909         int err = 0;
7910         void *hdr;
7911         struct nlattr *pinfoattr;
7912         struct sk_buff *msg;
7913
7914         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7915                 return -EOPNOTSUPP;
7916
7917         if (!rdev->ops->get_mesh_config)
7918                 return -EOPNOTSUPP;
7919
7920         wdev_lock(wdev);
7921         /* If not connected, get default parameters */
7922         if (!wdev->u.mesh.id_len)
7923                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7924         else
7925                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7926         wdev_unlock(wdev);
7927
7928         if (err)
7929                 return err;
7930
7931         /* Draw up a netlink message to send back */
7932         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7933         if (!msg)
7934                 return -ENOMEM;
7935         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7936                              NL80211_CMD_GET_MESH_CONFIG);
7937         if (!hdr)
7938                 goto out;
7939         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7940         if (!pinfoattr)
7941                 goto nla_put_failure;
7942         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7943             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7944                         cur_params.dot11MeshRetryTimeout) ||
7945             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7946                         cur_params.dot11MeshConfirmTimeout) ||
7947             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7948                         cur_params.dot11MeshHoldingTimeout) ||
7949             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7950                         cur_params.dot11MeshMaxPeerLinks) ||
7951             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7952                        cur_params.dot11MeshMaxRetries) ||
7953             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7954                        cur_params.dot11MeshTTL) ||
7955             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7956                        cur_params.element_ttl) ||
7957             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7958                        cur_params.auto_open_plinks) ||
7959             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7960                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7961             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7962                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7963             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7964                         cur_params.path_refresh_time) ||
7965             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7966                         cur_params.min_discovery_timeout) ||
7967             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7968                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7969             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7970                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7971             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7972                         cur_params.dot11MeshHWMPperrMinInterval) ||
7973             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7974                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7975             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7976                        cur_params.dot11MeshHWMPRootMode) ||
7977             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7978                         cur_params.dot11MeshHWMPRannInterval) ||
7979             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7980                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7981             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7982                        cur_params.dot11MeshForwarding) ||
7983             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7984                         cur_params.rssi_threshold) ||
7985             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7986                         cur_params.ht_opmode) ||
7987             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7988                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7989             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7990                         cur_params.dot11MeshHWMProotInterval) ||
7991             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7992                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7993             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7994                         cur_params.power_mode) ||
7995             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7996                         cur_params.dot11MeshAwakeWindowDuration) ||
7997             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7998                         cur_params.plink_timeout) ||
7999             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
8000                        cur_params.dot11MeshConnectedToMeshGate) ||
8001             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
8002                        cur_params.dot11MeshNolearn) ||
8003             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
8004                        cur_params.dot11MeshConnectedToAuthServer))
8005                 goto nla_put_failure;
8006         nla_nest_end(msg, pinfoattr);
8007         genlmsg_end(msg, hdr);
8008         return genlmsg_reply(msg, info);
8009
8010  nla_put_failure:
8011  out:
8012         nlmsg_free(msg);
8013         return -ENOBUFS;
8014 }
8015
8016 static const struct nla_policy
8017 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
8018         [NL80211_MESHCONF_RETRY_TIMEOUT] =
8019                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8020         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
8021                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8022         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
8023                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
8024         [NL80211_MESHCONF_MAX_PEER_LINKS] =
8025                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
8026         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
8027         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8028         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
8029         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
8030         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
8031                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
8032         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
8033         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
8034         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
8035         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
8036         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
8037                 NLA_POLICY_MIN(NLA_U16, 1),
8038         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
8039                 NLA_POLICY_MIN(NLA_U16, 1),
8040         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
8041                 NLA_POLICY_MIN(NLA_U16, 1),
8042         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
8043         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
8044                 NLA_POLICY_MIN(NLA_U16, 1),
8045         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
8046         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
8047         [NL80211_MESHCONF_RSSI_THRESHOLD] =
8048                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
8049         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
8050         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
8051         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
8052                 NLA_POLICY_MIN(NLA_U16, 1),
8053         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
8054                 NLA_POLICY_MIN(NLA_U16, 1),
8055         [NL80211_MESHCONF_POWER_MODE] =
8056                 NLA_POLICY_RANGE(NLA_U32,
8057                                  NL80211_MESH_POWER_ACTIVE,
8058                                  NL80211_MESH_POWER_MAX),
8059         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
8060         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
8061         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8062         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8063         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
8064 };
8065
8066 static const struct nla_policy
8067         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
8068         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
8069         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
8070         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
8071         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
8072         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
8073         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
8074         [NL80211_MESH_SETUP_IE] =
8075                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
8076                                        IEEE80211_MAX_DATA_LEN),
8077         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
8078 };
8079
8080 static int nl80211_parse_mesh_config(struct genl_info *info,
8081                                      struct mesh_config *cfg,
8082                                      u32 *mask_out)
8083 {
8084         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
8085         u32 mask = 0;
8086         u16 ht_opmode;
8087
8088 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
8089 do {                                                                    \
8090         if (tb[attr]) {                                                 \
8091                 cfg->param = fn(tb[attr]);                              \
8092                 mask |= BIT((attr) - 1);                                \
8093         }                                                               \
8094 } while (0)
8095
8096         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
8097                 return -EINVAL;
8098         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
8099                 return -EINVAL;
8100
8101         /* This makes sure that there aren't more than 32 mesh config
8102          * parameters (otherwise our bitfield scheme would not work.) */
8103         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
8104
8105         /* Fill in the params struct */
8106         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
8107                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
8108         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
8109                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
8110                                   nla_get_u16);
8111         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
8112                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
8113                                   nla_get_u16);
8114         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
8115                                   NL80211_MESHCONF_MAX_PEER_LINKS,
8116                                   nla_get_u16);
8117         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
8118                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
8119         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
8120                                   NL80211_MESHCONF_TTL, nla_get_u8);
8121         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
8122                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
8123         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
8124                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
8125                                   nla_get_u8);
8126         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
8127                                   mask,
8128                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
8129                                   nla_get_u32);
8130         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
8131                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
8132                                   nla_get_u8);
8133         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
8134                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
8135                                   nla_get_u32);
8136         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
8137             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
8138                 return -EINVAL;
8139         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
8140                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
8141                                   nla_get_u16);
8142         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
8143                                   mask,
8144                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
8145                                   nla_get_u32);
8146         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
8147             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
8148              cfg->dot11MeshHWMPactivePathTimeout > 65535))
8149                 return -EINVAL;
8150         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
8151                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
8152                                   nla_get_u16);
8153         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
8154                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
8155                                   nla_get_u16);
8156         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8157                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
8158                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
8159                                   nla_get_u16);
8160         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
8161                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
8162         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
8163                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
8164                                   nla_get_u16);
8165         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
8166                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
8167                                   nla_get_u8);
8168         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
8169                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
8170         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
8171                                   NL80211_MESHCONF_RSSI_THRESHOLD,
8172                                   nla_get_s32);
8173         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
8174                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
8175                                   nla_get_u8);
8176         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
8177                                   NL80211_MESHCONF_CONNECTED_TO_AS,
8178                                   nla_get_u8);
8179         /*
8180          * Check HT operation mode based on
8181          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
8182          */
8183         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
8184                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
8185
8186                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
8187                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
8188                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
8189                         return -EINVAL;
8190
8191                 /* NON_HT_STA bit is reserved, but some programs set it */
8192                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
8193
8194                 cfg->ht_opmode = ht_opmode;
8195                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
8196         }
8197         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
8198                                   dot11MeshHWMPactivePathToRootTimeout, mask,
8199                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
8200                                   nla_get_u32);
8201         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
8202             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
8203              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
8204                 return -EINVAL;
8205         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
8206                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
8207                                   nla_get_u16);
8208         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
8209                                   mask,
8210                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
8211                                   nla_get_u16);
8212         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
8213                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
8214         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
8215                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
8216         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
8217                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
8218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
8219                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
8220         if (mask_out)
8221                 *mask_out = mask;
8222
8223         return 0;
8224
8225 #undef FILL_IN_MESH_PARAM_IF_SET
8226 }
8227
8228 static int nl80211_parse_mesh_setup(struct genl_info *info,
8229                                      struct mesh_setup *setup)
8230 {
8231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8232         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
8233
8234         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
8235                 return -EINVAL;
8236         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
8237                 return -EINVAL;
8238
8239         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
8240                 setup->sync_method =
8241                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
8242                  IEEE80211_SYNC_METHOD_VENDOR :
8243                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
8244
8245         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
8246                 setup->path_sel_proto =
8247                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
8248                  IEEE80211_PATH_PROTOCOL_VENDOR :
8249                  IEEE80211_PATH_PROTOCOL_HWMP;
8250
8251         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
8252                 setup->path_metric =
8253                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
8254                  IEEE80211_PATH_METRIC_VENDOR :
8255                  IEEE80211_PATH_METRIC_AIRTIME;
8256
8257         if (tb[NL80211_MESH_SETUP_IE]) {
8258                 struct nlattr *ieattr =
8259                         tb[NL80211_MESH_SETUP_IE];
8260                 setup->ie = nla_data(ieattr);
8261                 setup->ie_len = nla_len(ieattr);
8262         }
8263         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
8264             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
8265                 return -EINVAL;
8266         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
8267         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
8268         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
8269         if (setup->is_secure)
8270                 setup->user_mpm = true;
8271
8272         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
8273                 if (!setup->user_mpm)
8274                         return -EINVAL;
8275                 setup->auth_id =
8276                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
8277         }
8278
8279         return 0;
8280 }
8281
8282 static int nl80211_update_mesh_config(struct sk_buff *skb,
8283                                       struct genl_info *info)
8284 {
8285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8286         struct net_device *dev = info->user_ptr[1];
8287         struct wireless_dev *wdev = dev->ieee80211_ptr;
8288         struct mesh_config cfg;
8289         u32 mask;
8290         int err;
8291
8292         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
8293                 return -EOPNOTSUPP;
8294
8295         if (!rdev->ops->update_mesh_config)
8296                 return -EOPNOTSUPP;
8297
8298         err = nl80211_parse_mesh_config(info, &cfg, &mask);
8299         if (err)
8300                 return err;
8301
8302         wdev_lock(wdev);
8303         if (!wdev->u.mesh.id_len)
8304                 err = -ENOLINK;
8305
8306         if (!err)
8307                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
8308
8309         wdev_unlock(wdev);
8310
8311         return err;
8312 }
8313
8314 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
8315                               struct sk_buff *msg)
8316 {
8317         struct nlattr *nl_reg_rules;
8318         unsigned int i;
8319
8320         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
8321             (regdom->dfs_region &&
8322              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
8323                 goto nla_put_failure;
8324
8325         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
8326         if (!nl_reg_rules)
8327                 goto nla_put_failure;
8328
8329         for (i = 0; i < regdom->n_reg_rules; i++) {
8330                 struct nlattr *nl_reg_rule;
8331                 const struct ieee80211_reg_rule *reg_rule;
8332                 const struct ieee80211_freq_range *freq_range;
8333                 const struct ieee80211_power_rule *power_rule;
8334                 unsigned int max_bandwidth_khz;
8335
8336                 reg_rule = &regdom->reg_rules[i];
8337                 freq_range = &reg_rule->freq_range;
8338                 power_rule = &reg_rule->power_rule;
8339
8340                 nl_reg_rule = nla_nest_start_noflag(msg, i);
8341                 if (!nl_reg_rule)
8342                         goto nla_put_failure;
8343
8344                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
8345                 if (!max_bandwidth_khz)
8346                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
8347                                                                   reg_rule);
8348
8349                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
8350                                 reg_rule->flags) ||
8351                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
8352                                 freq_range->start_freq_khz) ||
8353                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
8354                                 freq_range->end_freq_khz) ||
8355                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
8356                                 max_bandwidth_khz) ||
8357                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
8358                                 power_rule->max_antenna_gain) ||
8359                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
8360                                 power_rule->max_eirp) ||
8361                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
8362                                 reg_rule->dfs_cac_ms))
8363                         goto nla_put_failure;
8364
8365                 nla_nest_end(msg, nl_reg_rule);
8366         }
8367
8368         nla_nest_end(msg, nl_reg_rules);
8369         return 0;
8370
8371 nla_put_failure:
8372         return -EMSGSIZE;
8373 }
8374
8375 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
8376 {
8377         const struct ieee80211_regdomain *regdom = NULL;
8378         struct cfg80211_registered_device *rdev;
8379         struct wiphy *wiphy = NULL;
8380         struct sk_buff *msg;
8381         int err = -EMSGSIZE;
8382         void *hdr;
8383
8384         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8385         if (!msg)
8386                 return -ENOBUFS;
8387
8388         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8389                              NL80211_CMD_GET_REG);
8390         if (!hdr)
8391                 goto put_failure;
8392
8393         rtnl_lock();
8394
8395         if (info->attrs[NL80211_ATTR_WIPHY]) {
8396                 bool self_managed;
8397
8398                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8399                 if (IS_ERR(rdev)) {
8400                         err = PTR_ERR(rdev);
8401                         goto nla_put_failure;
8402                 }
8403
8404                 wiphy = &rdev->wiphy;
8405                 self_managed = wiphy->regulatory_flags &
8406                                REGULATORY_WIPHY_SELF_MANAGED;
8407
8408                 rcu_read_lock();
8409
8410                 regdom = get_wiphy_regdom(wiphy);
8411
8412                 /* a self-managed-reg device must have a private regdom */
8413                 if (WARN_ON(!regdom && self_managed)) {
8414                         err = -EINVAL;
8415                         goto nla_put_failure_rcu;
8416                 }
8417
8418                 if (regdom &&
8419                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8420                         goto nla_put_failure_rcu;
8421         } else {
8422                 rcu_read_lock();
8423         }
8424
8425         if (!wiphy && reg_last_request_cell_base() &&
8426             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8427                         NL80211_USER_REG_HINT_CELL_BASE))
8428                 goto nla_put_failure_rcu;
8429
8430         if (!regdom)
8431                 regdom = rcu_dereference(cfg80211_regdomain);
8432
8433         if (nl80211_put_regdom(regdom, msg))
8434                 goto nla_put_failure_rcu;
8435
8436         rcu_read_unlock();
8437
8438         genlmsg_end(msg, hdr);
8439         rtnl_unlock();
8440         return genlmsg_reply(msg, info);
8441
8442 nla_put_failure_rcu:
8443         rcu_read_unlock();
8444 nla_put_failure:
8445         rtnl_unlock();
8446 put_failure:
8447         nlmsg_free(msg);
8448         return err;
8449 }
8450
8451 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
8452                                u32 seq, int flags, struct wiphy *wiphy,
8453                                const struct ieee80211_regdomain *regdom)
8454 {
8455         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8456                                    NL80211_CMD_GET_REG);
8457
8458         if (!hdr)
8459                 return -1;
8460
8461         genl_dump_check_consistent(cb, hdr);
8462
8463         if (nl80211_put_regdom(regdom, msg))
8464                 goto nla_put_failure;
8465
8466         if (!wiphy && reg_last_request_cell_base() &&
8467             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
8468                         NL80211_USER_REG_HINT_CELL_BASE))
8469                 goto nla_put_failure;
8470
8471         if (wiphy &&
8472             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8473                 goto nla_put_failure;
8474
8475         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
8476             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
8477                 goto nla_put_failure;
8478
8479         genlmsg_end(msg, hdr);
8480         return 0;
8481
8482 nla_put_failure:
8483         genlmsg_cancel(msg, hdr);
8484         return -EMSGSIZE;
8485 }
8486
8487 static int nl80211_get_reg_dump(struct sk_buff *skb,
8488                                 struct netlink_callback *cb)
8489 {
8490         const struct ieee80211_regdomain *regdom = NULL;
8491         struct cfg80211_registered_device *rdev;
8492         int err, reg_idx, start = cb->args[2];
8493
8494         rcu_read_lock();
8495
8496         if (cfg80211_regdomain && start == 0) {
8497                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8498                                           NLM_F_MULTI, NULL,
8499                                           rcu_dereference(cfg80211_regdomain));
8500                 if (err < 0)
8501                         goto out_err;
8502         }
8503
8504         /* the global regdom is idx 0 */
8505         reg_idx = 1;
8506         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8507                 regdom = get_wiphy_regdom(&rdev->wiphy);
8508                 if (!regdom)
8509                         continue;
8510
8511                 if (++reg_idx <= start)
8512                         continue;
8513
8514                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
8515                                           NLM_F_MULTI, &rdev->wiphy, regdom);
8516                 if (err < 0) {
8517                         reg_idx--;
8518                         break;
8519                 }
8520         }
8521
8522         cb->args[2] = reg_idx;
8523         err = skb->len;
8524 out_err:
8525         rcu_read_unlock();
8526         return err;
8527 }
8528
8529 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
8530 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
8531         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
8532         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
8533         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
8534         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
8535         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
8536         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
8537         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
8538 };
8539
8540 static int parse_reg_rule(struct nlattr *tb[],
8541         struct ieee80211_reg_rule *reg_rule)
8542 {
8543         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
8544         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
8545
8546         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
8547                 return -EINVAL;
8548         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
8549                 return -EINVAL;
8550         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
8551                 return -EINVAL;
8552         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
8553                 return -EINVAL;
8554         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
8555                 return -EINVAL;
8556
8557         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
8558
8559         freq_range->start_freq_khz =
8560                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
8561         freq_range->end_freq_khz =
8562                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
8563         freq_range->max_bandwidth_khz =
8564                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
8565
8566         power_rule->max_eirp =
8567                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
8568
8569         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
8570                 power_rule->max_antenna_gain =
8571                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
8572
8573         if (tb[NL80211_ATTR_DFS_CAC_TIME])
8574                 reg_rule->dfs_cac_ms =
8575                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
8576
8577         return 0;
8578 }
8579
8580 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
8581 {
8582         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
8583         struct nlattr *nl_reg_rule;
8584         char *alpha2;
8585         int rem_reg_rules, r;
8586         u32 num_rules = 0, rule_idx = 0;
8587         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
8588         struct ieee80211_regdomain *rd;
8589
8590         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
8591                 return -EINVAL;
8592
8593         if (!info->attrs[NL80211_ATTR_REG_RULES])
8594                 return -EINVAL;
8595
8596         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
8597
8598         if (info->attrs[NL80211_ATTR_DFS_REGION])
8599                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
8600
8601         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8602                             rem_reg_rules) {
8603                 num_rules++;
8604                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
8605                         return -EINVAL;
8606         }
8607
8608         rtnl_lock();
8609         if (!reg_is_valid_request(alpha2)) {
8610                 r = -EINVAL;
8611                 goto out;
8612         }
8613
8614         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
8615         if (!rd) {
8616                 r = -ENOMEM;
8617                 goto out;
8618         }
8619
8620         rd->n_reg_rules = num_rules;
8621         rd->alpha2[0] = alpha2[0];
8622         rd->alpha2[1] = alpha2[1];
8623
8624         /*
8625          * Disable DFS master mode if the DFS region was
8626          * not supported or known on this kernel.
8627          */
8628         if (reg_supported_dfs_region(dfs_region))
8629                 rd->dfs_region = dfs_region;
8630
8631         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
8632                             rem_reg_rules) {
8633                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
8634                                                 nl_reg_rule, reg_rule_policy,
8635                                                 info->extack);
8636                 if (r)
8637                         goto bad_reg;
8638                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
8639                 if (r)
8640                         goto bad_reg;
8641
8642                 rule_idx++;
8643
8644                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8645                         r = -EINVAL;
8646                         goto bad_reg;
8647                 }
8648         }
8649
8650         r = set_regdom(rd, REGD_SOURCE_CRDA);
8651         /* set_regdom takes ownership of rd */
8652         rd = NULL;
8653  bad_reg:
8654         kfree(rd);
8655  out:
8656         rtnl_unlock();
8657         return r;
8658 }
8659 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8660
8661 static int validate_scan_freqs(struct nlattr *freqs)
8662 {
8663         struct nlattr *attr1, *attr2;
8664         int n_channels = 0, tmp1, tmp2;
8665
8666         nla_for_each_nested(attr1, freqs, tmp1)
8667                 if (nla_len(attr1) != sizeof(u32))
8668                         return 0;
8669
8670         nla_for_each_nested(attr1, freqs, tmp1) {
8671                 n_channels++;
8672                 /*
8673                  * Some hardware has a limited channel list for
8674                  * scanning, and it is pretty much nonsensical
8675                  * to scan for a channel twice, so disallow that
8676                  * and don't require drivers to check that the
8677                  * channel list they get isn't longer than what
8678                  * they can scan, as long as they can scan all
8679                  * the channels they registered at once.
8680                  */
8681                 nla_for_each_nested(attr2, freqs, tmp2)
8682                         if (attr1 != attr2 &&
8683                             nla_get_u32(attr1) == nla_get_u32(attr2))
8684                                 return 0;
8685         }
8686
8687         return n_channels;
8688 }
8689
8690 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8691 {
8692         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8693 }
8694
8695 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8696                             struct cfg80211_bss_selection *bss_select)
8697 {
8698         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8699         struct nlattr *nest;
8700         int err;
8701         bool found = false;
8702         int i;
8703
8704         /* only process one nested attribute */
8705         nest = nla_data(nla);
8706         if (!nla_ok(nest, nla_len(nest)))
8707                 return -EINVAL;
8708
8709         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8710                                           nest, nl80211_bss_select_policy,
8711                                           NULL);
8712         if (err)
8713                 return err;
8714
8715         /* only one attribute may be given */
8716         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8717                 if (attr[i]) {
8718                         if (found)
8719                                 return -EINVAL;
8720                         found = true;
8721                 }
8722         }
8723
8724         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8725
8726         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8727                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8728
8729         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8730                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8731                 bss_select->param.band_pref =
8732                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8733                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8734                         return -EINVAL;
8735         }
8736
8737         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8738                 struct nl80211_bss_select_rssi_adjust *adj_param;
8739
8740                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8741                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8742                 bss_select->param.adjust.band = adj_param->band;
8743                 bss_select->param.adjust.delta = adj_param->delta;
8744                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8745                         return -EINVAL;
8746         }
8747
8748         /* user-space did not provide behaviour attribute */
8749         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8750                 return -EINVAL;
8751
8752         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8753                 return -EINVAL;
8754
8755         return 0;
8756 }
8757
8758 int nl80211_parse_random_mac(struct nlattr **attrs,
8759                              u8 *mac_addr, u8 *mac_addr_mask)
8760 {
8761         int i;
8762
8763         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8764                 eth_zero_addr(mac_addr);
8765                 eth_zero_addr(mac_addr_mask);
8766                 mac_addr[0] = 0x2;
8767                 mac_addr_mask[0] = 0x3;
8768
8769                 return 0;
8770         }
8771
8772         /* need both or none */
8773         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8774                 return -EINVAL;
8775
8776         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8777         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8778
8779         /* don't allow or configure an mcast address */
8780         if (!is_multicast_ether_addr(mac_addr_mask) ||
8781             is_multicast_ether_addr(mac_addr))
8782                 return -EINVAL;
8783
8784         /*
8785          * allow users to pass a MAC address that has bits set outside
8786          * of the mask, but don't bother drivers with having to deal
8787          * with such bits
8788          */
8789         for (i = 0; i < ETH_ALEN; i++)
8790                 mac_addr[i] &= mac_addr_mask[i];
8791
8792         return 0;
8793 }
8794
8795 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev,
8796                                               struct ieee80211_channel *chan)
8797 {
8798         unsigned int link_id;
8799         bool all_ok = true;
8800
8801         ASSERT_WDEV_LOCK(wdev);
8802
8803         if (!cfg80211_beaconing_iface_active(wdev))
8804                 return true;
8805
8806         /*
8807          * FIXME: check if we have a free HW resource/link for chan
8808          *
8809          * This, as well as the FIXME below, requires knowing the link
8810          * capabilities of the hardware.
8811          */
8812
8813         /* we cannot leave radar channels */
8814         for_each_valid_link(wdev, link_id) {
8815                 struct cfg80211_chan_def *chandef;
8816
8817                 chandef = wdev_chandef(wdev, link_id);
8818                 if (!chandef || !chandef->chan)
8819                         continue;
8820
8821                 /*
8822                  * FIXME: don't require all_ok, but rather check only the
8823                  *        correct HW resource/link onto which 'chan' falls,
8824                  *        as only that link leaves the channel for doing
8825                  *        the off-channel operation.
8826                  */
8827
8828                 if (chandef->chan->flags & IEEE80211_CHAN_RADAR)
8829                         all_ok = false;
8830         }
8831
8832         if (all_ok)
8833                 return true;
8834
8835         return regulatory_pre_cac_allowed(wdev->wiphy);
8836 }
8837
8838 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8839                                     enum nl80211_ext_feature_index feat)
8840 {
8841         if (!(flags & flag))
8842                 return true;
8843         if (wiphy_ext_feature_isset(wiphy, feat))
8844                 return true;
8845         return false;
8846 }
8847
8848 static int
8849 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8850                          void *request, struct nlattr **attrs,
8851                          bool is_sched_scan)
8852 {
8853         u8 *mac_addr, *mac_addr_mask;
8854         u32 *flags;
8855         enum nl80211_feature_flags randomness_flag;
8856
8857         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8858                 return 0;
8859
8860         if (is_sched_scan) {
8861                 struct cfg80211_sched_scan_request *req = request;
8862
8863                 randomness_flag = wdev ?
8864                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8865                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8866                 flags = &req->flags;
8867                 mac_addr = req->mac_addr;
8868                 mac_addr_mask = req->mac_addr_mask;
8869         } else {
8870                 struct cfg80211_scan_request *req = request;
8871
8872                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8873                 flags = &req->flags;
8874                 mac_addr = req->mac_addr;
8875                 mac_addr_mask = req->mac_addr_mask;
8876         }
8877
8878         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8879
8880         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8881              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8882             !nl80211_check_scan_feat(wiphy, *flags,
8883                                      NL80211_SCAN_FLAG_LOW_SPAN,
8884                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8885             !nl80211_check_scan_feat(wiphy, *flags,
8886                                      NL80211_SCAN_FLAG_LOW_POWER,
8887                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8888             !nl80211_check_scan_feat(wiphy, *flags,
8889                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8890                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8891             !nl80211_check_scan_feat(wiphy, *flags,
8892                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8893                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8894             !nl80211_check_scan_feat(wiphy, *flags,
8895                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8896                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8897             !nl80211_check_scan_feat(wiphy, *flags,
8898                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8899                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8900             !nl80211_check_scan_feat(wiphy, *flags,
8901                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8902                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8903             !nl80211_check_scan_feat(wiphy, *flags,
8904                                      NL80211_SCAN_FLAG_RANDOM_SN,
8905                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8906             !nl80211_check_scan_feat(wiphy, *flags,
8907                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8908                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8909                 return -EOPNOTSUPP;
8910
8911         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8912                 int err;
8913
8914                 if (!(wiphy->features & randomness_flag) ||
8915                     (wdev && wdev->connected))
8916                         return -EOPNOTSUPP;
8917
8918                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8919                 if (err)
8920                         return err;
8921         }
8922
8923         return 0;
8924 }
8925
8926 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8927 {
8928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8929         struct wireless_dev *wdev = info->user_ptr[1];
8930         struct cfg80211_scan_request *request;
8931         struct nlattr *scan_freqs = NULL;
8932         bool scan_freqs_khz = false;
8933         struct nlattr *attr;
8934         struct wiphy *wiphy;
8935         int err, tmp, n_ssids = 0, n_channels, i;
8936         size_t ie_len;
8937
8938         wiphy = &rdev->wiphy;
8939
8940         if (wdev->iftype == NL80211_IFTYPE_NAN)
8941                 return -EOPNOTSUPP;
8942
8943         if (!rdev->ops->scan)
8944                 return -EOPNOTSUPP;
8945
8946         if (rdev->scan_req || rdev->scan_msg)
8947                 return -EBUSY;
8948
8949         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8950                 if (!wiphy_ext_feature_isset(wiphy,
8951                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8952                         return -EOPNOTSUPP;
8953                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8954                 scan_freqs_khz = true;
8955         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8956                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8957
8958         if (scan_freqs) {
8959                 n_channels = validate_scan_freqs(scan_freqs);
8960                 if (!n_channels)
8961                         return -EINVAL;
8962         } else {
8963                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8964         }
8965
8966         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8967                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8968                         n_ssids++;
8969
8970         if (n_ssids > wiphy->max_scan_ssids)
8971                 return -EINVAL;
8972
8973         if (info->attrs[NL80211_ATTR_IE])
8974                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8975         else
8976                 ie_len = 0;
8977
8978         if (ie_len > wiphy->max_scan_ie_len)
8979                 return -EINVAL;
8980
8981         request = kzalloc(sizeof(*request)
8982                         + sizeof(*request->ssids) * n_ssids
8983                         + sizeof(*request->channels) * n_channels
8984                         + ie_len, GFP_KERNEL);
8985         if (!request)
8986                 return -ENOMEM;
8987
8988         if (n_ssids)
8989                 request->ssids = (void *)&request->channels[n_channels];
8990         request->n_ssids = n_ssids;
8991         if (ie_len) {
8992                 if (n_ssids)
8993                         request->ie = (void *)(request->ssids + n_ssids);
8994                 else
8995                         request->ie = (void *)(request->channels + n_channels);
8996         }
8997
8998         i = 0;
8999         if (scan_freqs) {
9000                 /* user specified, bail out if channel not found */
9001                 nla_for_each_nested(attr, scan_freqs, tmp) {
9002                         struct ieee80211_channel *chan;
9003                         int freq = nla_get_u32(attr);
9004
9005                         if (!scan_freqs_khz)
9006                                 freq = MHZ_TO_KHZ(freq);
9007
9008                         chan = ieee80211_get_channel_khz(wiphy, freq);
9009                         if (!chan) {
9010                                 err = -EINVAL;
9011                                 goto out_free;
9012                         }
9013
9014                         /* ignore disabled channels */
9015                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9016                                 continue;
9017
9018                         request->channels[i] = chan;
9019                         i++;
9020                 }
9021         } else {
9022                 enum nl80211_band band;
9023
9024                 /* all channels */
9025                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9026                         int j;
9027
9028                         if (!wiphy->bands[band])
9029                                 continue;
9030                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9031                                 struct ieee80211_channel *chan;
9032
9033                                 chan = &wiphy->bands[band]->channels[j];
9034
9035                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9036                                         continue;
9037
9038                                 request->channels[i] = chan;
9039                                 i++;
9040                         }
9041                 }
9042         }
9043
9044         if (!i) {
9045                 err = -EINVAL;
9046                 goto out_free;
9047         }
9048
9049         request->n_channels = i;
9050
9051         wdev_lock(wdev);
9052         for (i = 0; i < request->n_channels; i++) {
9053                 struct ieee80211_channel *chan = request->channels[i];
9054
9055                 /* if we can go off-channel to the target channel we're good */
9056                 if (cfg80211_off_channel_oper_allowed(wdev, chan))
9057                         continue;
9058
9059                 if (!cfg80211_wdev_on_sub_chan(wdev, chan, true)) {
9060                         wdev_unlock(wdev);
9061                         err = -EBUSY;
9062                         goto out_free;
9063                 }
9064         }
9065         wdev_unlock(wdev);
9066
9067         i = 0;
9068         if (n_ssids) {
9069                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
9070                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9071                                 err = -EINVAL;
9072                                 goto out_free;
9073                         }
9074                         request->ssids[i].ssid_len = nla_len(attr);
9075                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
9076                         i++;
9077                 }
9078         }
9079
9080         if (info->attrs[NL80211_ATTR_IE]) {
9081                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9082                 memcpy((void *)request->ie,
9083                        nla_data(info->attrs[NL80211_ATTR_IE]),
9084                        request->ie_len);
9085         }
9086
9087         for (i = 0; i < NUM_NL80211_BANDS; i++)
9088                 if (wiphy->bands[i])
9089                         request->rates[i] =
9090                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
9091
9092         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
9093                 nla_for_each_nested(attr,
9094                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
9095                                     tmp) {
9096                         enum nl80211_band band = nla_type(attr);
9097
9098                         if (band < 0 || band >= NUM_NL80211_BANDS) {
9099                                 err = -EINVAL;
9100                                 goto out_free;
9101                         }
9102
9103                         if (!wiphy->bands[band])
9104                                 continue;
9105
9106                         err = ieee80211_get_ratemask(wiphy->bands[band],
9107                                                      nla_data(attr),
9108                                                      nla_len(attr),
9109                                                      &request->rates[band]);
9110                         if (err)
9111                                 goto out_free;
9112                 }
9113         }
9114
9115         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
9116                 request->duration =
9117                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
9118                 request->duration_mandatory =
9119                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
9120         }
9121
9122         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
9123                                        false);
9124         if (err)
9125                 goto out_free;
9126
9127         request->no_cck =
9128                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
9129
9130         /* Initial implementation used NL80211_ATTR_MAC to set the specific
9131          * BSSID to scan for. This was problematic because that same attribute
9132          * was already used for another purpose (local random MAC address). The
9133          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
9134          * compatibility with older userspace components, also use the
9135          * NL80211_ATTR_MAC value here if it can be determined to be used for
9136          * the specific BSSID use case instead of the random MAC address
9137          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
9138          */
9139         if (info->attrs[NL80211_ATTR_BSSID])
9140                 memcpy(request->bssid,
9141                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
9142         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
9143                  info->attrs[NL80211_ATTR_MAC])
9144                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
9145                        ETH_ALEN);
9146         else
9147                 eth_broadcast_addr(request->bssid);
9148
9149         request->wdev = wdev;
9150         request->wiphy = &rdev->wiphy;
9151         request->scan_start = jiffies;
9152
9153         rdev->scan_req = request;
9154         err = cfg80211_scan(rdev);
9155
9156         if (err)
9157                 goto out_free;
9158
9159         nl80211_send_scan_start(rdev, wdev);
9160         dev_hold(wdev->netdev);
9161
9162         return 0;
9163
9164  out_free:
9165         rdev->scan_req = NULL;
9166         kfree(request);
9167
9168         return err;
9169 }
9170
9171 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
9172 {
9173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9174         struct wireless_dev *wdev = info->user_ptr[1];
9175
9176         if (!rdev->ops->abort_scan)
9177                 return -EOPNOTSUPP;
9178
9179         if (rdev->scan_msg)
9180                 return 0;
9181
9182         if (!rdev->scan_req)
9183                 return -ENOENT;
9184
9185         rdev_abort_scan(rdev, wdev);
9186         return 0;
9187 }
9188
9189 static int
9190 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
9191                                struct cfg80211_sched_scan_request *request,
9192                                struct nlattr **attrs)
9193 {
9194         int tmp, err, i = 0;
9195         struct nlattr *attr;
9196
9197         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9198                 u32 interval;
9199
9200                 /*
9201                  * If scan plans are not specified,
9202                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
9203                  * case one scan plan will be set with the specified scan
9204                  * interval and infinite number of iterations.
9205                  */
9206                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
9207                 if (!interval)
9208                         return -EINVAL;
9209
9210                 request->scan_plans[0].interval =
9211                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
9212                 if (!request->scan_plans[0].interval)
9213                         return -EINVAL;
9214
9215                 if (request->scan_plans[0].interval >
9216                     wiphy->max_sched_scan_plan_interval)
9217                         request->scan_plans[0].interval =
9218                                 wiphy->max_sched_scan_plan_interval;
9219
9220                 return 0;
9221         }
9222
9223         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
9224                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
9225
9226                 if (WARN_ON(i >= n_plans))
9227                         return -EINVAL;
9228
9229                 err = nla_parse_nested_deprecated(plan,
9230                                                   NL80211_SCHED_SCAN_PLAN_MAX,
9231                                                   attr, nl80211_plan_policy,
9232                                                   NULL);
9233                 if (err)
9234                         return err;
9235
9236                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
9237                         return -EINVAL;
9238
9239                 request->scan_plans[i].interval =
9240                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
9241                 if (!request->scan_plans[i].interval ||
9242                     request->scan_plans[i].interval >
9243                     wiphy->max_sched_scan_plan_interval)
9244                         return -EINVAL;
9245
9246                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
9247                         request->scan_plans[i].iterations =
9248                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
9249                         if (!request->scan_plans[i].iterations ||
9250                             (request->scan_plans[i].iterations >
9251                              wiphy->max_sched_scan_plan_iterations))
9252                                 return -EINVAL;
9253                 } else if (i < n_plans - 1) {
9254                         /*
9255                          * All scan plans but the last one must specify
9256                          * a finite number of iterations
9257                          */
9258                         return -EINVAL;
9259                 }
9260
9261                 i++;
9262         }
9263
9264         /*
9265          * The last scan plan must not specify the number of
9266          * iterations, it is supposed to run infinitely
9267          */
9268         if (request->scan_plans[n_plans - 1].iterations)
9269                 return  -EINVAL;
9270
9271         return 0;
9272 }
9273
9274 static int
9275 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
9276                                        struct cfg80211_match_set *match_sets,
9277                                        struct nlattr *tb_band_rssi,
9278                                        s32 rssi_thold)
9279 {
9280         struct nlattr *attr;
9281         int i, tmp, ret = 0;
9282
9283         if (!wiphy_ext_feature_isset(wiphy,
9284                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
9285                 if (tb_band_rssi)
9286                         ret = -EOPNOTSUPP;
9287                 else
9288                         for (i = 0; i < NUM_NL80211_BANDS; i++)
9289                                 match_sets->per_band_rssi_thold[i] =
9290                                         NL80211_SCAN_RSSI_THOLD_OFF;
9291                 return ret;
9292         }
9293
9294         for (i = 0; i < NUM_NL80211_BANDS; i++)
9295                 match_sets->per_band_rssi_thold[i] = rssi_thold;
9296
9297         nla_for_each_nested(attr, tb_band_rssi, tmp) {
9298                 enum nl80211_band band = nla_type(attr);
9299
9300                 if (band < 0 || band >= NUM_NL80211_BANDS)
9301                         return -EINVAL;
9302
9303                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
9304         }
9305
9306         return 0;
9307 }
9308
9309 static struct cfg80211_sched_scan_request *
9310 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
9311                          struct nlattr **attrs, int max_match_sets)
9312 {
9313         struct cfg80211_sched_scan_request *request;
9314         struct nlattr *attr;
9315         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
9316         enum nl80211_band band;
9317         size_t ie_len;
9318         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
9319         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
9320
9321         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9322                 n_channels = validate_scan_freqs(
9323                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
9324                 if (!n_channels)
9325                         return ERR_PTR(-EINVAL);
9326         } else {
9327                 n_channels = ieee80211_get_num_supported_channels(wiphy);
9328         }
9329
9330         if (attrs[NL80211_ATTR_SCAN_SSIDS])
9331                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9332                                     tmp)
9333                         n_ssids++;
9334
9335         if (n_ssids > wiphy->max_sched_scan_ssids)
9336                 return ERR_PTR(-EINVAL);
9337
9338         /*
9339          * First, count the number of 'real' matchsets. Due to an issue with
9340          * the old implementation, matchsets containing only the RSSI attribute
9341          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
9342          * RSSI for all matchsets, rather than their own matchset for reporting
9343          * all APs with a strong RSSI. This is needed to be compatible with
9344          * older userspace that treated a matchset with only the RSSI as the
9345          * global RSSI for all other matchsets - if there are other matchsets.
9346          */
9347         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9348                 nla_for_each_nested(attr,
9349                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9350                                     tmp) {
9351                         struct nlattr *rssi;
9352
9353                         err = nla_parse_nested_deprecated(tb,
9354                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9355                                                           attr,
9356                                                           nl80211_match_policy,
9357                                                           NULL);
9358                         if (err)
9359                                 return ERR_PTR(err);
9360
9361                         /* SSID and BSSID are mutually exclusive */
9362                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
9363                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
9364                                 return ERR_PTR(-EINVAL);
9365
9366                         /* add other standalone attributes here */
9367                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
9368                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
9369                                 n_match_sets++;
9370                                 continue;
9371                         }
9372                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9373                         if (rssi)
9374                                 default_match_rssi = nla_get_s32(rssi);
9375                 }
9376         }
9377
9378         /* However, if there's no other matchset, add the RSSI one */
9379         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
9380                 n_match_sets = 1;
9381
9382         if (n_match_sets > max_match_sets)
9383                 return ERR_PTR(-EINVAL);
9384
9385         if (attrs[NL80211_ATTR_IE])
9386                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
9387         else
9388                 ie_len = 0;
9389
9390         if (ie_len > wiphy->max_sched_scan_ie_len)
9391                 return ERR_PTR(-EINVAL);
9392
9393         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
9394                 /*
9395                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
9396                  * each scan plan already specifies its own interval
9397                  */
9398                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9399                         return ERR_PTR(-EINVAL);
9400
9401                 nla_for_each_nested(attr,
9402                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
9403                         n_plans++;
9404         } else {
9405                 /*
9406                  * The scan interval attribute is kept for backward
9407                  * compatibility. If no scan plans are specified and sched scan
9408                  * interval is specified, one scan plan will be set with this
9409                  * scan interval and infinite number of iterations.
9410                  */
9411                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
9412                         return ERR_PTR(-EINVAL);
9413
9414                 n_plans = 1;
9415         }
9416
9417         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
9418                 return ERR_PTR(-EINVAL);
9419
9420         if (!wiphy_ext_feature_isset(
9421                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
9422             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
9423              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
9424                 return ERR_PTR(-EINVAL);
9425
9426         request = kzalloc(sizeof(*request)
9427                         + sizeof(*request->ssids) * n_ssids
9428                         + sizeof(*request->match_sets) * n_match_sets
9429                         + sizeof(*request->scan_plans) * n_plans
9430                         + sizeof(*request->channels) * n_channels
9431                         + ie_len, GFP_KERNEL);
9432         if (!request)
9433                 return ERR_PTR(-ENOMEM);
9434
9435         if (n_ssids)
9436                 request->ssids = (void *)&request->channels[n_channels];
9437         request->n_ssids = n_ssids;
9438         if (ie_len) {
9439                 if (n_ssids)
9440                         request->ie = (void *)(request->ssids + n_ssids);
9441                 else
9442                         request->ie = (void *)(request->channels + n_channels);
9443         }
9444
9445         if (n_match_sets) {
9446                 if (request->ie)
9447                         request->match_sets = (void *)(request->ie + ie_len);
9448                 else if (n_ssids)
9449                         request->match_sets =
9450                                 (void *)(request->ssids + n_ssids);
9451                 else
9452                         request->match_sets =
9453                                 (void *)(request->channels + n_channels);
9454         }
9455         request->n_match_sets = n_match_sets;
9456
9457         if (n_match_sets)
9458                 request->scan_plans = (void *)(request->match_sets +
9459                                                n_match_sets);
9460         else if (request->ie)
9461                 request->scan_plans = (void *)(request->ie + ie_len);
9462         else if (n_ssids)
9463                 request->scan_plans = (void *)(request->ssids + n_ssids);
9464         else
9465                 request->scan_plans = (void *)(request->channels + n_channels);
9466
9467         request->n_scan_plans = n_plans;
9468
9469         i = 0;
9470         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
9471                 /* user specified, bail out if channel not found */
9472                 nla_for_each_nested(attr,
9473                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
9474                                     tmp) {
9475                         struct ieee80211_channel *chan;
9476
9477                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
9478
9479                         if (!chan) {
9480                                 err = -EINVAL;
9481                                 goto out_free;
9482                         }
9483
9484                         /* ignore disabled channels */
9485                         if (chan->flags & IEEE80211_CHAN_DISABLED)
9486                                 continue;
9487
9488                         request->channels[i] = chan;
9489                         i++;
9490                 }
9491         } else {
9492                 /* all channels */
9493                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
9494                         int j;
9495
9496                         if (!wiphy->bands[band])
9497                                 continue;
9498                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
9499                                 struct ieee80211_channel *chan;
9500
9501                                 chan = &wiphy->bands[band]->channels[j];
9502
9503                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
9504                                         continue;
9505
9506                                 request->channels[i] = chan;
9507                                 i++;
9508                         }
9509                 }
9510         }
9511
9512         if (!i) {
9513                 err = -EINVAL;
9514                 goto out_free;
9515         }
9516
9517         request->n_channels = i;
9518
9519         i = 0;
9520         if (n_ssids) {
9521                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
9522                                     tmp) {
9523                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
9524                                 err = -EINVAL;
9525                                 goto out_free;
9526                         }
9527                         request->ssids[i].ssid_len = nla_len(attr);
9528                         memcpy(request->ssids[i].ssid, nla_data(attr),
9529                                nla_len(attr));
9530                         i++;
9531                 }
9532         }
9533
9534         i = 0;
9535         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
9536                 nla_for_each_nested(attr,
9537                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
9538                                     tmp) {
9539                         struct nlattr *ssid, *bssid, *rssi;
9540
9541                         err = nla_parse_nested_deprecated(tb,
9542                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
9543                                                           attr,
9544                                                           nl80211_match_policy,
9545                                                           NULL);
9546                         if (err)
9547                                 goto out_free;
9548                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
9549                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
9550
9551                         if (!ssid && !bssid) {
9552                                 i++;
9553                                 continue;
9554                         }
9555
9556                         if (WARN_ON(i >= n_match_sets)) {
9557                                 /* this indicates a programming error,
9558                                  * the loop above should have verified
9559                                  * things properly
9560                                  */
9561                                 err = -EINVAL;
9562                                 goto out_free;
9563                         }
9564
9565                         if (ssid) {
9566                                 memcpy(request->match_sets[i].ssid.ssid,
9567                                        nla_data(ssid), nla_len(ssid));
9568                                 request->match_sets[i].ssid.ssid_len =
9569                                         nla_len(ssid);
9570                         }
9571                         if (bssid)
9572                                 memcpy(request->match_sets[i].bssid,
9573                                        nla_data(bssid), ETH_ALEN);
9574
9575                         /* special attribute - old implementation w/a */
9576                         request->match_sets[i].rssi_thold = default_match_rssi;
9577                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
9578                         if (rssi)
9579                                 request->match_sets[i].rssi_thold =
9580                                         nla_get_s32(rssi);
9581
9582                         /* Parse per band RSSI attribute */
9583                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
9584                                 &request->match_sets[i],
9585                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
9586                                 request->match_sets[i].rssi_thold);
9587                         if (err)
9588                                 goto out_free;
9589
9590                         i++;
9591                 }
9592
9593                 /* there was no other matchset, so the RSSI one is alone */
9594                 if (i == 0 && n_match_sets)
9595                         request->match_sets[0].rssi_thold = default_match_rssi;
9596
9597                 request->min_rssi_thold = INT_MAX;
9598                 for (i = 0; i < n_match_sets; i++)
9599                         request->min_rssi_thold =
9600                                 min(request->match_sets[i].rssi_thold,
9601                                     request->min_rssi_thold);
9602         } else {
9603                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
9604         }
9605
9606         if (ie_len) {
9607                 request->ie_len = ie_len;
9608                 memcpy((void *)request->ie,
9609                        nla_data(attrs[NL80211_ATTR_IE]),
9610                        request->ie_len);
9611         }
9612
9613         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
9614         if (err)
9615                 goto out_free;
9616
9617         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
9618                 request->delay =
9619                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
9620
9621         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
9622                 request->relative_rssi = nla_get_s8(
9623                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
9624                 request->relative_rssi_set = true;
9625         }
9626
9627         if (request->relative_rssi_set &&
9628             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
9629                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
9630
9631                 rssi_adjust = nla_data(
9632                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
9633                 request->rssi_adjust.band = rssi_adjust->band;
9634                 request->rssi_adjust.delta = rssi_adjust->delta;
9635                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
9636                         err = -EINVAL;
9637                         goto out_free;
9638                 }
9639         }
9640
9641         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
9642         if (err)
9643                 goto out_free;
9644
9645         request->scan_start = jiffies;
9646
9647         return request;
9648
9649 out_free:
9650         kfree(request);
9651         return ERR_PTR(err);
9652 }
9653
9654 static int nl80211_start_sched_scan(struct sk_buff *skb,
9655                                     struct genl_info *info)
9656 {
9657         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9658         struct net_device *dev = info->user_ptr[1];
9659         struct wireless_dev *wdev = dev->ieee80211_ptr;
9660         struct cfg80211_sched_scan_request *sched_scan_req;
9661         bool want_multi;
9662         int err;
9663
9664         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
9665                 return -EOPNOTSUPP;
9666
9667         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9668         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9669         if (err)
9670                 return err;
9671
9672         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9673                                                   info->attrs,
9674                                                   rdev->wiphy.max_match_sets);
9675
9676         err = PTR_ERR_OR_ZERO(sched_scan_req);
9677         if (err)
9678                 goto out_err;
9679
9680         /* leave request id zero for legacy request
9681          * or if driver does not support multi-scheduled scan
9682          */
9683         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9684                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9685
9686         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9687         if (err)
9688                 goto out_free;
9689
9690         sched_scan_req->dev = dev;
9691         sched_scan_req->wiphy = &rdev->wiphy;
9692
9693         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9694                 sched_scan_req->owner_nlportid = info->snd_portid;
9695
9696         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9697
9698         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9699         return 0;
9700
9701 out_free:
9702         kfree(sched_scan_req);
9703 out_err:
9704         return err;
9705 }
9706
9707 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9708                                    struct genl_info *info)
9709 {
9710         struct cfg80211_sched_scan_request *req;
9711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9712         u64 cookie;
9713
9714         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9715                 return -EOPNOTSUPP;
9716
9717         if (info->attrs[NL80211_ATTR_COOKIE]) {
9718                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9719                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9720         }
9721
9722         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9723                                      struct cfg80211_sched_scan_request,
9724                                      list);
9725         if (!req || req->reqid ||
9726             (req->owner_nlportid &&
9727              req->owner_nlportid != info->snd_portid))
9728                 return -ENOENT;
9729
9730         return cfg80211_stop_sched_scan_req(rdev, req, false);
9731 }
9732
9733 static int nl80211_start_radar_detection(struct sk_buff *skb,
9734                                          struct genl_info *info)
9735 {
9736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9737         struct net_device *dev = info->user_ptr[1];
9738         struct wireless_dev *wdev = dev->ieee80211_ptr;
9739         struct wiphy *wiphy = wdev->wiphy;
9740         struct cfg80211_chan_def chandef;
9741         enum nl80211_dfs_regions dfs_region;
9742         unsigned int cac_time_ms;
9743         int err = -EINVAL;
9744
9745         flush_delayed_work(&rdev->dfs_update_channels_wk);
9746
9747         wiphy_lock(wiphy);
9748
9749         dfs_region = reg_get_dfs_region(wiphy);
9750         if (dfs_region == NL80211_DFS_UNSET)
9751                 goto unlock;
9752
9753         err = nl80211_parse_chandef(rdev, info, &chandef);
9754         if (err)
9755                 goto unlock;
9756
9757         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9758         if (err < 0)
9759                 goto unlock;
9760
9761         if (err == 0) {
9762                 err = -EINVAL;
9763                 goto unlock;
9764         }
9765
9766         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) {
9767                 err = -EINVAL;
9768                 goto unlock;
9769         }
9770
9771         if (nla_get_flag(info->attrs[NL80211_ATTR_RADAR_BACKGROUND])) {
9772                 err = cfg80211_start_background_radar_detection(rdev, wdev,
9773                                                                 &chandef);
9774                 goto unlock;
9775         }
9776
9777         if (netif_carrier_ok(dev)) {
9778                 err = -EBUSY;
9779                 goto unlock;
9780         }
9781
9782         if (wdev->cac_started) {
9783                 err = -EBUSY;
9784                 goto unlock;
9785         }
9786
9787         /* CAC start is offloaded to HW and can't be started manually */
9788         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) {
9789                 err = -EOPNOTSUPP;
9790                 goto unlock;
9791         }
9792
9793         if (!rdev->ops->start_radar_detection) {
9794                 err = -EOPNOTSUPP;
9795                 goto unlock;
9796         }
9797
9798         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9799         if (WARN_ON(!cac_time_ms))
9800                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9801
9802         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9803         if (!err) {
9804                 wdev->links[0].ap.chandef = chandef;
9805                 wdev->cac_started = true;
9806                 wdev->cac_start_time = jiffies;
9807                 wdev->cac_time_ms = cac_time_ms;
9808         }
9809 unlock:
9810         wiphy_unlock(wiphy);
9811
9812         return err;
9813 }
9814
9815 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9816                                           struct genl_info *info)
9817 {
9818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9819         struct net_device *dev = info->user_ptr[1];
9820         struct wireless_dev *wdev = dev->ieee80211_ptr;
9821         struct wiphy *wiphy = wdev->wiphy;
9822         struct cfg80211_chan_def chandef;
9823         enum nl80211_dfs_regions dfs_region;
9824         int err;
9825
9826         dfs_region = reg_get_dfs_region(wiphy);
9827         if (dfs_region == NL80211_DFS_UNSET) {
9828                 GENL_SET_ERR_MSG(info,
9829                                  "DFS Region is not set. Unexpected Radar indication");
9830                 return -EINVAL;
9831         }
9832
9833         err = nl80211_parse_chandef(rdev, info, &chandef);
9834         if (err) {
9835                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9836                 return err;
9837         }
9838
9839         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9840         if (err < 0) {
9841                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9842                 return err;
9843         }
9844
9845         if (err == 0) {
9846                 GENL_SET_ERR_MSG(info,
9847                                  "Unexpected Radar indication for chandef/iftype");
9848                 return -EINVAL;
9849         }
9850
9851         /* Do not process this notification if radar is already detected
9852          * by kernel on this channel, and return success.
9853          */
9854         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9855                 return 0;
9856
9857         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9858
9859         cfg80211_sched_dfs_chan_update(rdev);
9860
9861         rdev->radar_chandef = chandef;
9862
9863         /* Propagate this notification to other radios as well */
9864         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9865
9866         return 0;
9867 }
9868
9869 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9870 {
9871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9872         unsigned int link_id = nl80211_link_id(info->attrs);
9873         struct net_device *dev = info->user_ptr[1];
9874         struct wireless_dev *wdev = dev->ieee80211_ptr;
9875         struct cfg80211_csa_settings params;
9876         struct nlattr **csa_attrs = NULL;
9877         int err;
9878         bool need_new_beacon = false;
9879         bool need_handle_dfs_flag = true;
9880         int len, i;
9881         u32 cs_count;
9882
9883         if (!rdev->ops->channel_switch ||
9884             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9885                 return -EOPNOTSUPP;
9886
9887         switch (dev->ieee80211_ptr->iftype) {
9888         case NL80211_IFTYPE_AP:
9889         case NL80211_IFTYPE_P2P_GO:
9890                 need_new_beacon = true;
9891                 /* For all modes except AP the handle_dfs flag needs to be
9892                  * supplied to tell the kernel that userspace will handle radar
9893                  * events when they happen. Otherwise a switch to a channel
9894                  * requiring DFS will be rejected.
9895                  */
9896                 need_handle_dfs_flag = false;
9897
9898                 /* useless if AP is not running */
9899                 if (!wdev->links[link_id].ap.beacon_interval)
9900                         return -ENOTCONN;
9901                 break;
9902         case NL80211_IFTYPE_ADHOC:
9903                 if (!wdev->u.ibss.ssid_len)
9904                         return -ENOTCONN;
9905                 break;
9906         case NL80211_IFTYPE_MESH_POINT:
9907                 if (!wdev->u.mesh.id_len)
9908                         return -ENOTCONN;
9909                 break;
9910         default:
9911                 return -EOPNOTSUPP;
9912         }
9913
9914         memset(&params, 0, sizeof(params));
9915         params.beacon_csa.ftm_responder = -1;
9916
9917         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9918             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9919                 return -EINVAL;
9920
9921         /* only important for AP, IBSS and mesh create IEs internally */
9922         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9923                 return -EINVAL;
9924
9925         /* Even though the attribute is u32, the specification says
9926          * u8, so let's make sure we don't overflow.
9927          */
9928         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9929         if (cs_count > 255)
9930                 return -EINVAL;
9931
9932         params.count = cs_count;
9933
9934         if (!need_new_beacon)
9935                 goto skip_beacons;
9936
9937         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9938         if (err)
9939                 goto free;
9940
9941         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9942                             GFP_KERNEL);
9943         if (!csa_attrs) {
9944                 err = -ENOMEM;
9945                 goto free;
9946         }
9947
9948         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9949                                           info->attrs[NL80211_ATTR_CSA_IES],
9950                                           nl80211_policy, info->extack);
9951         if (err)
9952                 goto free;
9953
9954         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9955         if (err)
9956                 goto free;
9957
9958         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9959                 err = -EINVAL;
9960                 goto free;
9961         }
9962
9963         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9964         if (!len || (len % sizeof(u16))) {
9965                 err = -EINVAL;
9966                 goto free;
9967         }
9968
9969         params.n_counter_offsets_beacon = len / sizeof(u16);
9970         if (rdev->wiphy.max_num_csa_counters &&
9971             (params.n_counter_offsets_beacon >
9972              rdev->wiphy.max_num_csa_counters)) {
9973                 err = -EINVAL;
9974                 goto free;
9975         }
9976
9977         params.counter_offsets_beacon =
9978                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9979
9980         /* sanity checks - counters should fit and be the same */
9981         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9982                 u16 offset = params.counter_offsets_beacon[i];
9983
9984                 if (offset >= params.beacon_csa.tail_len) {
9985                         err = -EINVAL;
9986                         goto free;
9987                 }
9988
9989                 if (params.beacon_csa.tail[offset] != params.count) {
9990                         err = -EINVAL;
9991                         goto free;
9992                 }
9993         }
9994
9995         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9996                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9997                 if (!len || (len % sizeof(u16))) {
9998                         err = -EINVAL;
9999                         goto free;
10000                 }
10001
10002                 params.n_counter_offsets_presp = len / sizeof(u16);
10003                 if (rdev->wiphy.max_num_csa_counters &&
10004                     (params.n_counter_offsets_presp >
10005                      rdev->wiphy.max_num_csa_counters)) {
10006                         err = -EINVAL;
10007                         goto free;
10008                 }
10009
10010                 params.counter_offsets_presp =
10011                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
10012
10013                 /* sanity checks - counters should fit and be the same */
10014                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
10015                         u16 offset = params.counter_offsets_presp[i];
10016
10017                         if (offset >= params.beacon_csa.probe_resp_len) {
10018                                 err = -EINVAL;
10019                                 goto free;
10020                         }
10021
10022                         if (params.beacon_csa.probe_resp[offset] !=
10023                             params.count) {
10024                                 err = -EINVAL;
10025                                 goto free;
10026                         }
10027                 }
10028         }
10029
10030 skip_beacons:
10031         err = nl80211_parse_chandef(rdev, info, &params.chandef);
10032         if (err)
10033                 goto free;
10034
10035         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
10036                                            wdev->iftype)) {
10037                 err = -EINVAL;
10038                 goto free;
10039         }
10040
10041         err = cfg80211_chandef_dfs_required(wdev->wiphy,
10042                                             &params.chandef,
10043                                             wdev->iftype);
10044         if (err < 0)
10045                 goto free;
10046
10047         if (err > 0) {
10048                 params.radar_required = true;
10049                 if (need_handle_dfs_flag &&
10050                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
10051                         err = -EINVAL;
10052                         goto free;
10053                 }
10054         }
10055
10056         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
10057                 params.block_tx = true;
10058
10059         wdev_lock(wdev);
10060         err = rdev_channel_switch(rdev, dev, &params);
10061         wdev_unlock(wdev);
10062
10063 free:
10064         kfree(params.beacon_after.mbssid_ies);
10065         kfree(params.beacon_csa.mbssid_ies);
10066         kfree(csa_attrs);
10067         return err;
10068 }
10069
10070 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
10071                             u32 seq, int flags,
10072                             struct cfg80211_registered_device *rdev,
10073                             struct wireless_dev *wdev,
10074                             struct cfg80211_internal_bss *intbss)
10075 {
10076         struct cfg80211_bss *res = &intbss->pub;
10077         const struct cfg80211_bss_ies *ies;
10078         unsigned int link_id;
10079         void *hdr;
10080         struct nlattr *bss;
10081
10082         ASSERT_WDEV_LOCK(wdev);
10083
10084         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
10085                              NL80211_CMD_NEW_SCAN_RESULTS);
10086         if (!hdr)
10087                 return -1;
10088
10089         genl_dump_check_consistent(cb, hdr);
10090
10091         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
10092                 goto nla_put_failure;
10093         if (wdev->netdev &&
10094             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
10095                 goto nla_put_failure;
10096         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
10097                               NL80211_ATTR_PAD))
10098                 goto nla_put_failure;
10099
10100         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
10101         if (!bss)
10102                 goto nla_put_failure;
10103         if ((!is_zero_ether_addr(res->bssid) &&
10104              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
10105                 goto nla_put_failure;
10106
10107         rcu_read_lock();
10108         /* indicate whether we have probe response data or not */
10109         if (rcu_access_pointer(res->proberesp_ies) &&
10110             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
10111                 goto fail_unlock_rcu;
10112
10113         /* this pointer prefers to be pointed to probe response data
10114          * but is always valid
10115          */
10116         ies = rcu_dereference(res->ies);
10117         if (ies) {
10118                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
10119                                       NL80211_BSS_PAD))
10120                         goto fail_unlock_rcu;
10121                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
10122                                         ies->len, ies->data))
10123                         goto fail_unlock_rcu;
10124         }
10125
10126         /* and this pointer is always (unless driver didn't know) beacon data */
10127         ies = rcu_dereference(res->beacon_ies);
10128         if (ies && ies->from_beacon) {
10129                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
10130                                       NL80211_BSS_PAD))
10131                         goto fail_unlock_rcu;
10132                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
10133                                         ies->len, ies->data))
10134                         goto fail_unlock_rcu;
10135         }
10136         rcu_read_unlock();
10137
10138         if (res->beacon_interval &&
10139             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
10140                 goto nla_put_failure;
10141         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
10142             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
10143             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
10144                         res->channel->freq_offset) ||
10145             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
10146             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
10147                         jiffies_to_msecs(jiffies - intbss->ts)))
10148                 goto nla_put_failure;
10149
10150         if (intbss->parent_tsf &&
10151             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
10152                                intbss->parent_tsf, NL80211_BSS_PAD) ||
10153              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
10154                      intbss->parent_bssid)))
10155                 goto nla_put_failure;
10156
10157         if (intbss->ts_boottime &&
10158             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
10159                               intbss->ts_boottime, NL80211_BSS_PAD))
10160                 goto nla_put_failure;
10161
10162         if (!nl80211_put_signal(msg, intbss->pub.chains,
10163                                 intbss->pub.chain_signal,
10164                                 NL80211_BSS_CHAIN_SIGNAL))
10165                 goto nla_put_failure;
10166
10167         switch (rdev->wiphy.signal_type) {
10168         case CFG80211_SIGNAL_TYPE_MBM:
10169                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
10170                         goto nla_put_failure;
10171                 break;
10172         case CFG80211_SIGNAL_TYPE_UNSPEC:
10173                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
10174                         goto nla_put_failure;
10175                 break;
10176         default:
10177                 break;
10178         }
10179
10180         switch (wdev->iftype) {
10181         case NL80211_IFTYPE_P2P_CLIENT:
10182         case NL80211_IFTYPE_STATION:
10183                 for_each_valid_link(wdev, link_id) {
10184                         if (intbss == wdev->links[link_id].client.current_bss &&
10185                             (nla_put_u32(msg, NL80211_BSS_STATUS,
10186                                          NL80211_BSS_STATUS_ASSOCIATED) ||
10187                              (wdev->valid_links &&
10188                               (nla_put_u8(msg, NL80211_BSS_MLO_LINK_ID,
10189                                           link_id) ||
10190                                nla_put(msg, NL80211_BSS_MLD_ADDR, ETH_ALEN,
10191                                        wdev->u.client.connected_addr)))))
10192                                 goto nla_put_failure;
10193                 }
10194                 break;
10195         case NL80211_IFTYPE_ADHOC:
10196                 if (intbss == wdev->u.ibss.current_bss &&
10197                     nla_put_u32(msg, NL80211_BSS_STATUS,
10198                                 NL80211_BSS_STATUS_IBSS_JOINED))
10199                         goto nla_put_failure;
10200                 break;
10201         default:
10202                 break;
10203         }
10204
10205         nla_nest_end(msg, bss);
10206
10207         genlmsg_end(msg, hdr);
10208         return 0;
10209
10210  fail_unlock_rcu:
10211         rcu_read_unlock();
10212  nla_put_failure:
10213         genlmsg_cancel(msg, hdr);
10214         return -EMSGSIZE;
10215 }
10216
10217 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
10218 {
10219         struct cfg80211_registered_device *rdev;
10220         struct cfg80211_internal_bss *scan;
10221         struct wireless_dev *wdev;
10222         int start = cb->args[2], idx = 0;
10223         int err;
10224
10225         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, NULL);
10226         if (err)
10227                 return err;
10228         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10229         __acquire(&rdev->wiphy.mtx);
10230
10231         wdev_lock(wdev);
10232         spin_lock_bh(&rdev->bss_lock);
10233
10234         /*
10235          * dump_scan will be called multiple times to break up the scan results
10236          * into multiple messages.  It is unlikely that any more bss-es will be
10237          * expired after the first call, so only call only call this on the
10238          * first dump_scan invocation.
10239          */
10240         if (start == 0)
10241                 cfg80211_bss_expire(rdev);
10242
10243         cb->seq = rdev->bss_generation;
10244
10245         list_for_each_entry(scan, &rdev->bss_list, list) {
10246                 if (++idx <= start)
10247                         continue;
10248                 if (nl80211_send_bss(skb, cb,
10249                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10250                                 rdev, wdev, scan) < 0) {
10251                         idx--;
10252                         break;
10253                 }
10254         }
10255
10256         spin_unlock_bh(&rdev->bss_lock);
10257         wdev_unlock(wdev);
10258
10259         cb->args[2] = idx;
10260         wiphy_unlock(&rdev->wiphy);
10261
10262         return skb->len;
10263 }
10264
10265 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
10266                                int flags, struct net_device *dev,
10267                                bool allow_radio_stats,
10268                                struct survey_info *survey)
10269 {
10270         void *hdr;
10271         struct nlattr *infoattr;
10272
10273         /* skip radio stats if userspace didn't request them */
10274         if (!survey->channel && !allow_radio_stats)
10275                 return 0;
10276
10277         hdr = nl80211hdr_put(msg, portid, seq, flags,
10278                              NL80211_CMD_NEW_SURVEY_RESULTS);
10279         if (!hdr)
10280                 return -ENOMEM;
10281
10282         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10283                 goto nla_put_failure;
10284
10285         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
10286         if (!infoattr)
10287                 goto nla_put_failure;
10288
10289         if (survey->channel &&
10290             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
10291                         survey->channel->center_freq))
10292                 goto nla_put_failure;
10293
10294         if (survey->channel && survey->channel->freq_offset &&
10295             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
10296                         survey->channel->freq_offset))
10297                 goto nla_put_failure;
10298
10299         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
10300             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
10301                 goto nla_put_failure;
10302         if ((survey->filled & SURVEY_INFO_IN_USE) &&
10303             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
10304                 goto nla_put_failure;
10305         if ((survey->filled & SURVEY_INFO_TIME) &&
10306             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
10307                         survey->time, NL80211_SURVEY_INFO_PAD))
10308                 goto nla_put_failure;
10309         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
10310             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
10311                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
10312                 goto nla_put_failure;
10313         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
10314             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
10315                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
10316                 goto nla_put_failure;
10317         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
10318             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
10319                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
10320                 goto nla_put_failure;
10321         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
10322             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
10323                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
10324                 goto nla_put_failure;
10325         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
10326             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
10327                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
10328                 goto nla_put_failure;
10329         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
10330             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
10331                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
10332                 goto nla_put_failure;
10333
10334         nla_nest_end(msg, infoattr);
10335
10336         genlmsg_end(msg, hdr);
10337         return 0;
10338
10339  nla_put_failure:
10340         genlmsg_cancel(msg, hdr);
10341         return -EMSGSIZE;
10342 }
10343
10344 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
10345 {
10346         struct nlattr **attrbuf;
10347         struct survey_info survey;
10348         struct cfg80211_registered_device *rdev;
10349         struct wireless_dev *wdev;
10350         int survey_idx = cb->args[2];
10351         int res;
10352         bool radio_stats;
10353
10354         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
10355         if (!attrbuf)
10356                 return -ENOMEM;
10357
10358         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev, attrbuf);
10359         if (res) {
10360                 kfree(attrbuf);
10361                 return res;
10362         }
10363         /* nl80211_prepare_wdev_dump acquired it in the successful case */
10364         __acquire(&rdev->wiphy.mtx);
10365
10366         /* prepare_wdev_dump parsed the attributes */
10367         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
10368
10369         if (!wdev->netdev) {
10370                 res = -EINVAL;
10371                 goto out_err;
10372         }
10373
10374         if (!rdev->ops->dump_survey) {
10375                 res = -EOPNOTSUPP;
10376                 goto out_err;
10377         }
10378
10379         while (1) {
10380                 wdev_lock(wdev);
10381                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
10382                 wdev_unlock(wdev);
10383                 if (res == -ENOENT)
10384                         break;
10385                 if (res)
10386                         goto out_err;
10387
10388                 /* don't send disabled channels, but do send non-channel data */
10389                 if (survey.channel &&
10390                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
10391                         survey_idx++;
10392                         continue;
10393                 }
10394
10395                 if (nl80211_send_survey(skb,
10396                                 NETLINK_CB(cb->skb).portid,
10397                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
10398                                 wdev->netdev, radio_stats, &survey) < 0)
10399                         goto out;
10400                 survey_idx++;
10401         }
10402
10403  out:
10404         cb->args[2] = survey_idx;
10405         res = skb->len;
10406  out_err:
10407         kfree(attrbuf);
10408         wiphy_unlock(&rdev->wiphy);
10409         return res;
10410 }
10411
10412 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
10413 {
10414         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
10415                                   NL80211_WPA_VERSION_2 |
10416                                   NL80211_WPA_VERSION_3));
10417 }
10418
10419 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
10420 {
10421         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10422         struct net_device *dev = info->user_ptr[1];
10423         struct ieee80211_channel *chan;
10424         const u8 *bssid, *ssid;
10425         int err, ssid_len;
10426         enum nl80211_auth_type auth_type;
10427         struct key_parse key;
10428         bool local_state_change;
10429         struct cfg80211_auth_request req = {};
10430         u32 freq;
10431
10432         if (!info->attrs[NL80211_ATTR_MAC])
10433                 return -EINVAL;
10434
10435         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
10436                 return -EINVAL;
10437
10438         if (!info->attrs[NL80211_ATTR_SSID])
10439                 return -EINVAL;
10440
10441         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10442                 return -EINVAL;
10443
10444         err = nl80211_parse_key(info, &key);
10445         if (err)
10446                 return err;
10447
10448         if (key.idx >= 0) {
10449                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
10450                         return -EINVAL;
10451                 if (!key.p.key || !key.p.key_len)
10452                         return -EINVAL;
10453                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
10454                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
10455                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
10456                      key.p.key_len != WLAN_KEY_LEN_WEP104))
10457                         return -EINVAL;
10458                 if (key.idx > 3)
10459                         return -EINVAL;
10460         } else {
10461                 key.p.key_len = 0;
10462                 key.p.key = NULL;
10463         }
10464
10465         if (key.idx >= 0) {
10466                 int i;
10467                 bool ok = false;
10468
10469                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
10470                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
10471                                 ok = true;
10472                                 break;
10473                         }
10474                 }
10475                 if (!ok)
10476                         return -EINVAL;
10477         }
10478
10479         if (!rdev->ops->auth)
10480                 return -EOPNOTSUPP;
10481
10482         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10483             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10484                 return -EOPNOTSUPP;
10485
10486         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10487         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10488         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10489                 freq +=
10490                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10491
10492         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10493         if (!chan)
10494                 return -EINVAL;
10495
10496         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10497         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10498
10499         if (info->attrs[NL80211_ATTR_IE]) {
10500                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10501                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10502         }
10503
10504         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10505         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
10506                 return -EINVAL;
10507
10508         if ((auth_type == NL80211_AUTHTYPE_SAE ||
10509              auth_type == NL80211_AUTHTYPE_FILS_SK ||
10510              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
10511              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
10512             !info->attrs[NL80211_ATTR_AUTH_DATA])
10513                 return -EINVAL;
10514
10515         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
10516                 if (auth_type != NL80211_AUTHTYPE_SAE &&
10517                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
10518                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
10519                     auth_type != NL80211_AUTHTYPE_FILS_PK)
10520                         return -EINVAL;
10521                 req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
10522                 req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
10523         }
10524
10525         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10526
10527         /*
10528          * Since we no longer track auth state, ignore
10529          * requests to only change local state.
10530          */
10531         if (local_state_change)
10532                 return 0;
10533
10534         req.auth_type = auth_type;
10535         req.key = key.p.key;
10536         req.key_len = key.p.key_len;
10537         req.key_idx = key.idx;
10538         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10539         if (req.link_id >= 0) {
10540                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10541                         return -EINVAL;
10542                 if (!info->attrs[NL80211_ATTR_MLD_ADDR])
10543                         return -EINVAL;
10544                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10545         }
10546
10547         req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
10548                                    IEEE80211_BSS_TYPE_ESS,
10549                                    IEEE80211_PRIVACY_ANY);
10550         if (!req.bss)
10551                 return -ENOENT;
10552
10553         wdev_lock(dev->ieee80211_ptr);
10554         err = cfg80211_mlme_auth(rdev, dev, &req);
10555         wdev_unlock(dev->ieee80211_ptr);
10556
10557         cfg80211_put_bss(&rdev->wiphy, req.bss);
10558
10559         return err;
10560 }
10561
10562 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
10563                                      struct genl_info *info)
10564 {
10565         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10566                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
10567                 return -EINVAL;
10568         }
10569
10570         if (!rdev->ops->tx_control_port ||
10571             !wiphy_ext_feature_isset(&rdev->wiphy,
10572                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
10573                 return -EOPNOTSUPP;
10574
10575         return 0;
10576 }
10577
10578 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
10579                                    struct genl_info *info,
10580                                    struct cfg80211_crypto_settings *settings,
10581                                    int cipher_limit)
10582 {
10583         memset(settings, 0, sizeof(*settings));
10584
10585         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
10586
10587         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
10588                 u16 proto;
10589
10590                 proto = nla_get_u16(
10591                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
10592                 settings->control_port_ethertype = cpu_to_be16(proto);
10593                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
10594                     proto != ETH_P_PAE)
10595                         return -EINVAL;
10596                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
10597                         settings->control_port_no_encrypt = true;
10598         } else
10599                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
10600
10601         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10602                 int r = validate_pae_over_nl80211(rdev, info);
10603
10604                 if (r < 0)
10605                         return r;
10606
10607                 settings->control_port_over_nl80211 = true;
10608
10609                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
10610                         settings->control_port_no_preauth = true;
10611         }
10612
10613         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
10614                 void *data;
10615                 int len, i;
10616
10617                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10618                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
10619                 settings->n_ciphers_pairwise = len / sizeof(u32);
10620
10621                 if (len % sizeof(u32))
10622                         return -EINVAL;
10623
10624                 if (settings->n_ciphers_pairwise > cipher_limit)
10625                         return -EINVAL;
10626
10627                 memcpy(settings->ciphers_pairwise, data, len);
10628
10629                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
10630                         if (!cfg80211_supported_cipher_suite(
10631                                         &rdev->wiphy,
10632                                         settings->ciphers_pairwise[i]))
10633                                 return -EINVAL;
10634         }
10635
10636         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
10637                 settings->cipher_group =
10638                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
10639                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
10640                                                      settings->cipher_group))
10641                         return -EINVAL;
10642         }
10643
10644         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
10645                 settings->wpa_versions =
10646                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
10647                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
10648                         return -EINVAL;
10649         }
10650
10651         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
10652                 void *data;
10653                 int len;
10654
10655                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
10656                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
10657                 settings->n_akm_suites = len / sizeof(u32);
10658
10659                 if (len % sizeof(u32))
10660                         return -EINVAL;
10661
10662                 if (settings->n_akm_suites > rdev->wiphy.max_num_akm_suites)
10663                         return -EINVAL;
10664
10665                 memcpy(settings->akm_suites, data, len);
10666         }
10667
10668         if (info->attrs[NL80211_ATTR_PMK]) {
10669                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
10670                         return -EINVAL;
10671                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10672                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
10673                     !wiphy_ext_feature_isset(&rdev->wiphy,
10674                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
10675                         return -EINVAL;
10676                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10677         }
10678
10679         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
10680                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10681                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
10682                     !wiphy_ext_feature_isset(&rdev->wiphy,
10683                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
10684                         return -EINVAL;
10685                 settings->sae_pwd =
10686                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10687                 settings->sae_pwd_len =
10688                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
10689         }
10690
10691         if (info->attrs[NL80211_ATTR_SAE_PWE])
10692                 settings->sae_pwe =
10693                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
10694         else
10695                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
10696
10697         return 0;
10698 }
10699
10700 static struct cfg80211_bss *nl80211_assoc_bss(struct cfg80211_registered_device *rdev,
10701                                               const u8 *ssid, int ssid_len,
10702                                               struct nlattr **attrs)
10703 {
10704         struct ieee80211_channel *chan;
10705         struct cfg80211_bss *bss;
10706         const u8 *bssid;
10707         u32 freq;
10708
10709         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_WIPHY_FREQ])
10710                 return ERR_PTR(-EINVAL);
10711
10712         bssid = nla_data(attrs[NL80211_ATTR_MAC]);
10713
10714         freq = MHZ_TO_KHZ(nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]));
10715         if (attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10716                 freq += nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10717
10718         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10719         if (!chan)
10720                 return ERR_PTR(-EINVAL);
10721
10722         bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid,
10723                                ssid, ssid_len,
10724                                IEEE80211_BSS_TYPE_ESS,
10725                                IEEE80211_PRIVACY_ANY);
10726         if (!bss)
10727                 return ERR_PTR(-ENOENT);
10728
10729         return bss;
10730 }
10731
10732 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
10733 {
10734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10735         struct net_device *dev = info->user_ptr[1];
10736         struct cfg80211_assoc_request req = {};
10737         struct nlattr **attrs = NULL;
10738         const u8 *ap_addr, *ssid;
10739         unsigned int link_id;
10740         int err, ssid_len;
10741
10742         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10743             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10744                 return -EPERM;
10745
10746         if (!info->attrs[NL80211_ATTR_SSID])
10747                 return -EINVAL;
10748
10749         if (!rdev->ops->assoc)
10750                 return -EOPNOTSUPP;
10751
10752         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10753             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10754                 return -EOPNOTSUPP;
10755
10756         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10757         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10758
10759         if (info->attrs[NL80211_ATTR_IE]) {
10760                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10761                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10762
10763                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10764                                            req.ie, req.ie_len)) {
10765                         GENL_SET_ERR_MSG(info,
10766                                          "non-inheritance makes no sense");
10767                         return -EINVAL;
10768                 }
10769         }
10770
10771         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10772                 enum nl80211_mfp mfp =
10773                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10774                 if (mfp == NL80211_MFP_REQUIRED)
10775                         req.use_mfp = true;
10776                 else if (mfp != NL80211_MFP_NO)
10777                         return -EINVAL;
10778         }
10779
10780         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10781                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10782
10783         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10784                 req.flags |= ASSOC_REQ_DISABLE_HT;
10785
10786         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10787                 memcpy(&req.ht_capa_mask,
10788                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10789                        sizeof(req.ht_capa_mask));
10790
10791         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10792                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10793                         return -EINVAL;
10794                 memcpy(&req.ht_capa,
10795                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10796                        sizeof(req.ht_capa));
10797         }
10798
10799         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10800                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10801
10802         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10803                 req.flags |= ASSOC_REQ_DISABLE_HE;
10804
10805         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
10806                 req.flags |= ASSOC_REQ_DISABLE_EHT;
10807
10808         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10809                 memcpy(&req.vht_capa_mask,
10810                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10811                        sizeof(req.vht_capa_mask));
10812
10813         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10814                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10815                         return -EINVAL;
10816                 memcpy(&req.vht_capa,
10817                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10818                        sizeof(req.vht_capa));
10819         }
10820
10821         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10822                 if (!((rdev->wiphy.features &
10823                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10824                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10825                     !wiphy_ext_feature_isset(&rdev->wiphy,
10826                                              NL80211_EXT_FEATURE_RRM))
10827                         return -EINVAL;
10828                 req.flags |= ASSOC_REQ_USE_RRM;
10829         }
10830
10831         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10832                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10833                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10834                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10835                         return -EINVAL;
10836                 req.fils_nonces =
10837                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10838         }
10839
10840         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10841                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10842                         return -EINVAL;
10843                 memcpy(&req.s1g_capa_mask,
10844                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10845                        sizeof(req.s1g_capa_mask));
10846         }
10847
10848         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10849                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10850                         return -EINVAL;
10851                 memcpy(&req.s1g_capa,
10852                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10853                        sizeof(req.s1g_capa));
10854         }
10855
10856         req.link_id = nl80211_link_id_or_invalid(info->attrs);
10857
10858         if (info->attrs[NL80211_ATTR_MLO_LINKS]) {
10859                 unsigned int attrsize = NUM_NL80211_ATTR * sizeof(*attrs);
10860                 struct nlattr *link;
10861                 int rem = 0;
10862
10863                 if (req.link_id < 0)
10864                         return -EINVAL;
10865
10866                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO))
10867                         return -EINVAL;
10868
10869                 if (info->attrs[NL80211_ATTR_MAC] ||
10870                     info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10871                     !info->attrs[NL80211_ATTR_MLD_ADDR])
10872                         return -EINVAL;
10873
10874                 req.ap_mld_addr = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
10875                 ap_addr = req.ap_mld_addr;
10876
10877                 attrs = kzalloc(attrsize, GFP_KERNEL);
10878                 if (!attrs)
10879                         return -ENOMEM;
10880
10881                 nla_for_each_nested(link,
10882                                     info->attrs[NL80211_ATTR_MLO_LINKS],
10883                                     rem) {
10884                         memset(attrs, 0, attrsize);
10885
10886                         nla_parse_nested(attrs, NL80211_ATTR_MAX,
10887                                          link, NULL, NULL);
10888
10889                         if (!attrs[NL80211_ATTR_MLO_LINK_ID]) {
10890                                 err = -EINVAL;
10891                                 goto free;
10892                         }
10893
10894                         link_id = nla_get_u8(attrs[NL80211_ATTR_MLO_LINK_ID]);
10895                         /* cannot use the same link ID again */
10896                         if (req.links[link_id].bss) {
10897                                 err = -EINVAL;
10898                                 goto free;
10899                         }
10900                         req.links[link_id].bss =
10901                                 nl80211_assoc_bss(rdev, ssid, ssid_len, attrs);
10902                         if (IS_ERR(req.links[link_id].bss)) {
10903                                 err = PTR_ERR(req.links[link_id].bss);
10904                                 req.links[link_id].bss = NULL;
10905                                 goto free;
10906                         }
10907
10908                         if (attrs[NL80211_ATTR_IE]) {
10909                                 req.links[link_id].elems =
10910                                         nla_data(attrs[NL80211_ATTR_IE]);
10911                                 req.links[link_id].elems_len =
10912                                         nla_len(attrs[NL80211_ATTR_IE]);
10913
10914                                 if (cfg80211_find_elem(WLAN_EID_FRAGMENT,
10915                                                        req.links[link_id].elems,
10916                                                        req.links[link_id].elems_len)) {
10917                                         GENL_SET_ERR_MSG(info,
10918                                                          "cannot deal with fragmentation");
10919                                         err = -EINVAL;
10920                                         goto free;
10921                                 }
10922
10923                                 if (cfg80211_find_ext_elem(WLAN_EID_EXT_NON_INHERITANCE,
10924                                                            req.links[link_id].elems,
10925                                                            req.links[link_id].elems_len)) {
10926                                         GENL_SET_ERR_MSG(info,
10927                                                          "cannot deal with non-inheritance");
10928                                         err = -EINVAL;
10929                                         goto free;
10930                                 }
10931                         }
10932                 }
10933
10934                 if (!req.links[req.link_id].bss) {
10935                         err = -EINVAL;
10936                         goto free;
10937                 }
10938
10939                 if (req.links[req.link_id].elems_len) {
10940                         GENL_SET_ERR_MSG(info,
10941                                          "cannot have per-link elems on assoc link");
10942                         err = -EINVAL;
10943                         goto free;
10944                 }
10945
10946                 kfree(attrs);
10947                 attrs = NULL;
10948         } else {
10949                 if (req.link_id >= 0)
10950                         return -EINVAL;
10951
10952                 req.bss = nl80211_assoc_bss(rdev, ssid, ssid_len, info->attrs);
10953                 if (IS_ERR(req.bss))
10954                         return PTR_ERR(req.bss);
10955                 ap_addr = req.bss->bssid;
10956         }
10957
10958         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10959         if (!err) {
10960                 wdev_lock(dev->ieee80211_ptr);
10961
10962                 err = cfg80211_mlme_assoc(rdev, dev, &req);
10963
10964                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10965                         dev->ieee80211_ptr->conn_owner_nlportid =
10966                                 info->snd_portid;
10967                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10968                                ap_addr, ETH_ALEN);
10969                 }
10970
10971                 wdev_unlock(dev->ieee80211_ptr);
10972         }
10973
10974 free:
10975         for (link_id = 0; link_id < ARRAY_SIZE(req.links); link_id++)
10976                 cfg80211_put_bss(&rdev->wiphy, req.links[link_id].bss);
10977         cfg80211_put_bss(&rdev->wiphy, req.bss);
10978         kfree(attrs);
10979
10980         return err;
10981 }
10982
10983 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10984 {
10985         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10986         struct net_device *dev = info->user_ptr[1];
10987         const u8 *ie = NULL, *bssid;
10988         int ie_len = 0, err;
10989         u16 reason_code;
10990         bool local_state_change;
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_MAC])
10997                 return -EINVAL;
10998
10999         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11000                 return -EINVAL;
11001
11002         if (!rdev->ops->deauth)
11003                 return -EOPNOTSUPP;
11004
11005         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11006             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11007                 return -EOPNOTSUPP;
11008
11009         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11010
11011         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11012         if (reason_code == 0) {
11013                 /* Reason Code 0 is reserved */
11014                 return -EINVAL;
11015         }
11016
11017         if (info->attrs[NL80211_ATTR_IE]) {
11018                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11019                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11020         }
11021
11022         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11023
11024         wdev_lock(dev->ieee80211_ptr);
11025         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
11026                                    local_state_change);
11027         wdev_unlock(dev->ieee80211_ptr);
11028         return err;
11029 }
11030
11031 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
11032 {
11033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11034         struct net_device *dev = info->user_ptr[1];
11035         const u8 *ie = NULL, *bssid;
11036         int ie_len = 0, err;
11037         u16 reason_code;
11038         bool local_state_change;
11039
11040         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11041             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11042                 return -EPERM;
11043
11044         if (!info->attrs[NL80211_ATTR_MAC])
11045                 return -EINVAL;
11046
11047         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11048                 return -EINVAL;
11049
11050         if (!rdev->ops->disassoc)
11051                 return -EOPNOTSUPP;
11052
11053         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11054             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11055                 return -EOPNOTSUPP;
11056
11057         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11058
11059         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11060         if (reason_code == 0) {
11061                 /* Reason Code 0 is reserved */
11062                 return -EINVAL;
11063         }
11064
11065         if (info->attrs[NL80211_ATTR_IE]) {
11066                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11067                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11068         }
11069
11070         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
11071
11072         wdev_lock(dev->ieee80211_ptr);
11073         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
11074                                      local_state_change);
11075         wdev_unlock(dev->ieee80211_ptr);
11076         return err;
11077 }
11078
11079 static bool
11080 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
11081                          int mcast_rate[NUM_NL80211_BANDS],
11082                          int rateval)
11083 {
11084         struct wiphy *wiphy = &rdev->wiphy;
11085         bool found = false;
11086         int band, i;
11087
11088         for (band = 0; band < NUM_NL80211_BANDS; band++) {
11089                 struct ieee80211_supported_band *sband;
11090
11091                 sband = wiphy->bands[band];
11092                 if (!sband)
11093                         continue;
11094
11095                 for (i = 0; i < sband->n_bitrates; i++) {
11096                         if (sband->bitrates[i].bitrate == rateval) {
11097                                 mcast_rate[band] = i + 1;
11098                                 found = true;
11099                                 break;
11100                         }
11101                 }
11102         }
11103
11104         return found;
11105 }
11106
11107 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
11108 {
11109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11110         struct net_device *dev = info->user_ptr[1];
11111         struct cfg80211_ibss_params ibss;
11112         struct wiphy *wiphy;
11113         struct cfg80211_cached_keys *connkeys = NULL;
11114         int err;
11115
11116         memset(&ibss, 0, sizeof(ibss));
11117
11118         if (!info->attrs[NL80211_ATTR_SSID] ||
11119             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11120                 return -EINVAL;
11121
11122         ibss.beacon_interval = 100;
11123
11124         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
11125                 ibss.beacon_interval =
11126                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11127
11128         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
11129                                            ibss.beacon_interval);
11130         if (err)
11131                 return err;
11132
11133         if (!rdev->ops->join_ibss)
11134                 return -EOPNOTSUPP;
11135
11136         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11137                 return -EOPNOTSUPP;
11138
11139         wiphy = &rdev->wiphy;
11140
11141         if (info->attrs[NL80211_ATTR_MAC]) {
11142                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11143
11144                 if (!is_valid_ether_addr(ibss.bssid))
11145                         return -EINVAL;
11146         }
11147         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11148         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11149
11150         if (info->attrs[NL80211_ATTR_IE]) {
11151                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11152                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11153         }
11154
11155         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
11156         if (err)
11157                 return err;
11158
11159         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
11160                                      NL80211_IFTYPE_ADHOC))
11161                 return -EINVAL;
11162
11163         switch (ibss.chandef.width) {
11164         case NL80211_CHAN_WIDTH_5:
11165         case NL80211_CHAN_WIDTH_10:
11166         case NL80211_CHAN_WIDTH_20_NOHT:
11167                 break;
11168         case NL80211_CHAN_WIDTH_20:
11169         case NL80211_CHAN_WIDTH_40:
11170                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11171                         return -EINVAL;
11172                 break;
11173         case NL80211_CHAN_WIDTH_80:
11174         case NL80211_CHAN_WIDTH_80P80:
11175         case NL80211_CHAN_WIDTH_160:
11176                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
11177                         return -EINVAL;
11178                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
11179                                              NL80211_EXT_FEATURE_VHT_IBSS))
11180                         return -EINVAL;
11181                 break;
11182         case NL80211_CHAN_WIDTH_320:
11183                 return -EINVAL;
11184         default:
11185                 return -EINVAL;
11186         }
11187
11188         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
11189         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
11190
11191         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11192                 u8 *rates =
11193                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11194                 int n_rates =
11195                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11196                 struct ieee80211_supported_band *sband =
11197                         wiphy->bands[ibss.chandef.chan->band];
11198
11199                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11200                                              &ibss.basic_rates);
11201                 if (err)
11202                         return err;
11203         }
11204
11205         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11206                 memcpy(&ibss.ht_capa_mask,
11207                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11208                        sizeof(ibss.ht_capa_mask));
11209
11210         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11211                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11212                         return -EINVAL;
11213                 memcpy(&ibss.ht_capa,
11214                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11215                        sizeof(ibss.ht_capa));
11216         }
11217
11218         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11219             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
11220                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11221                 return -EINVAL;
11222
11223         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11224                 bool no_ht = false;
11225
11226                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
11227                 if (IS_ERR(connkeys))
11228                         return PTR_ERR(connkeys);
11229
11230                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
11231                     no_ht) {
11232                         kfree_sensitive(connkeys);
11233                         return -EINVAL;
11234                 }
11235         }
11236
11237         ibss.control_port =
11238                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
11239
11240         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11241                 int r = validate_pae_over_nl80211(rdev, info);
11242
11243                 if (r < 0) {
11244                         kfree_sensitive(connkeys);
11245                         return r;
11246                 }
11247
11248                 ibss.control_port_over_nl80211 = true;
11249         }
11250
11251         ibss.userspace_handles_dfs =
11252                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11253
11254         wdev_lock(dev->ieee80211_ptr);
11255         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
11256         if (err)
11257                 kfree_sensitive(connkeys);
11258         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
11259                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11260         wdev_unlock(dev->ieee80211_ptr);
11261
11262         return err;
11263 }
11264
11265 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
11266 {
11267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11268         struct net_device *dev = info->user_ptr[1];
11269
11270         if (!rdev->ops->leave_ibss)
11271                 return -EOPNOTSUPP;
11272
11273         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
11274                 return -EOPNOTSUPP;
11275
11276         return cfg80211_leave_ibss(rdev, dev, false);
11277 }
11278
11279 static int nl80211_set_mcast_rate(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         int mcast_rate[NUM_NL80211_BANDS];
11284         u32 nla_rate;
11285
11286         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
11287             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
11288             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
11289                 return -EOPNOTSUPP;
11290
11291         if (!rdev->ops->set_mcast_rate)
11292                 return -EOPNOTSUPP;
11293
11294         memset(mcast_rate, 0, sizeof(mcast_rate));
11295
11296         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
11297                 return -EINVAL;
11298
11299         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
11300         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
11301                 return -EINVAL;
11302
11303         return rdev_set_mcast_rate(rdev, dev, mcast_rate);
11304 }
11305
11306 static struct sk_buff *
11307 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
11308                             struct wireless_dev *wdev, int approxlen,
11309                             u32 portid, u32 seq, enum nl80211_commands cmd,
11310                             enum nl80211_attrs attr,
11311                             const struct nl80211_vendor_cmd_info *info,
11312                             gfp_t gfp)
11313 {
11314         struct sk_buff *skb;
11315         void *hdr;
11316         struct nlattr *data;
11317
11318         skb = nlmsg_new(approxlen + 100, gfp);
11319         if (!skb)
11320                 return NULL;
11321
11322         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
11323         if (!hdr) {
11324                 kfree_skb(skb);
11325                 return NULL;
11326         }
11327
11328         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11329                 goto nla_put_failure;
11330
11331         if (info) {
11332                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
11333                                 info->vendor_id))
11334                         goto nla_put_failure;
11335                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
11336                                 info->subcmd))
11337                         goto nla_put_failure;
11338         }
11339
11340         if (wdev) {
11341                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
11342                                       wdev_id(wdev), NL80211_ATTR_PAD))
11343                         goto nla_put_failure;
11344                 if (wdev->netdev &&
11345                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
11346                                 wdev->netdev->ifindex))
11347                         goto nla_put_failure;
11348         }
11349
11350         data = nla_nest_start_noflag(skb, attr);
11351         if (!data)
11352                 goto nla_put_failure;
11353
11354         ((void **)skb->cb)[0] = rdev;
11355         ((void **)skb->cb)[1] = hdr;
11356         ((void **)skb->cb)[2] = data;
11357
11358         return skb;
11359
11360  nla_put_failure:
11361         kfree_skb(skb);
11362         return NULL;
11363 }
11364
11365 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
11366                                            struct wireless_dev *wdev,
11367                                            enum nl80211_commands cmd,
11368                                            enum nl80211_attrs attr,
11369                                            unsigned int portid,
11370                                            int vendor_event_idx,
11371                                            int approxlen, gfp_t gfp)
11372 {
11373         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11374         const struct nl80211_vendor_cmd_info *info;
11375
11376         switch (cmd) {
11377         case NL80211_CMD_TESTMODE:
11378                 if (WARN_ON(vendor_event_idx != -1))
11379                         return NULL;
11380                 info = NULL;
11381                 break;
11382         case NL80211_CMD_VENDOR:
11383                 if (WARN_ON(vendor_event_idx < 0 ||
11384                             vendor_event_idx >= wiphy->n_vendor_events))
11385                         return NULL;
11386                 info = &wiphy->vendor_events[vendor_event_idx];
11387                 break;
11388         default:
11389                 WARN_ON(1);
11390                 return NULL;
11391         }
11392
11393         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
11394                                            cmd, attr, info, gfp);
11395 }
11396 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
11397
11398 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
11399 {
11400         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
11401         void *hdr = ((void **)skb->cb)[1];
11402         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
11403         struct nlattr *data = ((void **)skb->cb)[2];
11404         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
11405
11406         /* clear CB data for netlink core to own from now on */
11407         memset(skb->cb, 0, sizeof(skb->cb));
11408
11409         nla_nest_end(skb, data);
11410         genlmsg_end(skb, hdr);
11411
11412         if (nlhdr->nlmsg_pid) {
11413                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
11414                                 nlhdr->nlmsg_pid);
11415         } else {
11416                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
11417                         mcgrp = NL80211_MCGRP_VENDOR;
11418
11419                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
11420                                         skb, 0, mcgrp, gfp);
11421         }
11422 }
11423 EXPORT_SYMBOL(__cfg80211_send_event_skb);
11424
11425 #ifdef CONFIG_NL80211_TESTMODE
11426 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
11427 {
11428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11429         struct wireless_dev *wdev;
11430         int err;
11431
11432         lockdep_assert_held(&rdev->wiphy.mtx);
11433
11434         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
11435                                           info->attrs);
11436
11437         if (!rdev->ops->testmode_cmd)
11438                 return -EOPNOTSUPP;
11439
11440         if (IS_ERR(wdev)) {
11441                 err = PTR_ERR(wdev);
11442                 if (err != -EINVAL)
11443                         return err;
11444                 wdev = NULL;
11445         } else if (wdev->wiphy != &rdev->wiphy) {
11446                 return -EINVAL;
11447         }
11448
11449         if (!info->attrs[NL80211_ATTR_TESTDATA])
11450                 return -EINVAL;
11451
11452         rdev->cur_cmd_info = info;
11453         err = rdev_testmode_cmd(rdev, wdev,
11454                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
11455                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
11456         rdev->cur_cmd_info = NULL;
11457
11458         return err;
11459 }
11460
11461 static int nl80211_testmode_dump(struct sk_buff *skb,
11462                                  struct netlink_callback *cb)
11463 {
11464         struct cfg80211_registered_device *rdev;
11465         struct nlattr **attrbuf = NULL;
11466         int err;
11467         long phy_idx;
11468         void *data = NULL;
11469         int data_len = 0;
11470
11471         rtnl_lock();
11472
11473         if (cb->args[0]) {
11474                 /*
11475                  * 0 is a valid index, but not valid for args[0],
11476                  * so we need to offset by 1.
11477                  */
11478                 phy_idx = cb->args[0] - 1;
11479
11480                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
11481                 if (!rdev) {
11482                         err = -ENOENT;
11483                         goto out_err;
11484                 }
11485         } else {
11486                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
11487                                   GFP_KERNEL);
11488                 if (!attrbuf) {
11489                         err = -ENOMEM;
11490                         goto out_err;
11491                 }
11492
11493                 err = nlmsg_parse_deprecated(cb->nlh,
11494                                              GENL_HDRLEN + nl80211_fam.hdrsize,
11495                                              attrbuf, nl80211_fam.maxattr,
11496                                              nl80211_policy, NULL);
11497                 if (err)
11498                         goto out_err;
11499
11500                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
11501                 if (IS_ERR(rdev)) {
11502                         err = PTR_ERR(rdev);
11503                         goto out_err;
11504                 }
11505                 phy_idx = rdev->wiphy_idx;
11506
11507                 if (attrbuf[NL80211_ATTR_TESTDATA])
11508                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
11509         }
11510
11511         if (cb->args[1]) {
11512                 data = nla_data((void *)cb->args[1]);
11513                 data_len = nla_len((void *)cb->args[1]);
11514         }
11515
11516         if (!rdev->ops->testmode_dump) {
11517                 err = -EOPNOTSUPP;
11518                 goto out_err;
11519         }
11520
11521         while (1) {
11522                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
11523                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
11524                                            NL80211_CMD_TESTMODE);
11525                 struct nlattr *tmdata;
11526
11527                 if (!hdr)
11528                         break;
11529
11530                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
11531                         genlmsg_cancel(skb, hdr);
11532                         break;
11533                 }
11534
11535                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
11536                 if (!tmdata) {
11537                         genlmsg_cancel(skb, hdr);
11538                         break;
11539                 }
11540                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
11541                 nla_nest_end(skb, tmdata);
11542
11543                 if (err == -ENOBUFS || err == -ENOENT) {
11544                         genlmsg_cancel(skb, hdr);
11545                         break;
11546                 } else if (err) {
11547                         genlmsg_cancel(skb, hdr);
11548                         goto out_err;
11549                 }
11550
11551                 genlmsg_end(skb, hdr);
11552         }
11553
11554         err = skb->len;
11555         /* see above */
11556         cb->args[0] = phy_idx + 1;
11557  out_err:
11558         kfree(attrbuf);
11559         rtnl_unlock();
11560         return err;
11561 }
11562 #endif
11563
11564 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
11565 {
11566         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11567         struct net_device *dev = info->user_ptr[1];
11568         struct cfg80211_connect_params connect;
11569         struct wiphy *wiphy;
11570         struct cfg80211_cached_keys *connkeys = NULL;
11571         u32 freq = 0;
11572         int err;
11573
11574         memset(&connect, 0, sizeof(connect));
11575
11576         if (!info->attrs[NL80211_ATTR_SSID] ||
11577             !nla_len(info->attrs[NL80211_ATTR_SSID]))
11578                 return -EINVAL;
11579
11580         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11581                 connect.auth_type =
11582                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11583                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
11584                                              NL80211_CMD_CONNECT))
11585                         return -EINVAL;
11586         } else
11587                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
11588
11589         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
11590
11591         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
11592             !wiphy_ext_feature_isset(&rdev->wiphy,
11593                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
11594                 return -EINVAL;
11595         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
11596
11597         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
11598                                       NL80211_MAX_NR_CIPHER_SUITES);
11599         if (err)
11600                 return err;
11601
11602         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11603             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11604                 return -EOPNOTSUPP;
11605
11606         wiphy = &rdev->wiphy;
11607
11608         connect.bg_scan_period = -1;
11609         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
11610                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
11611                 connect.bg_scan_period =
11612                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
11613         }
11614
11615         if (info->attrs[NL80211_ATTR_MAC])
11616                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11617         else if (info->attrs[NL80211_ATTR_MAC_HINT])
11618                 connect.bssid_hint =
11619                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
11620         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11621         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11622
11623         if (info->attrs[NL80211_ATTR_IE]) {
11624                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11625                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11626         }
11627
11628         if (info->attrs[NL80211_ATTR_USE_MFP]) {
11629                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
11630                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
11631                     !wiphy_ext_feature_isset(&rdev->wiphy,
11632                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
11633                         return -EOPNOTSUPP;
11634         } else {
11635                 connect.mfp = NL80211_MFP_NO;
11636         }
11637
11638         if (info->attrs[NL80211_ATTR_PREV_BSSID])
11639                 connect.prev_bssid =
11640                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
11641
11642         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
11643                 freq = MHZ_TO_KHZ(nla_get_u32(
11644                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
11645         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
11646                 freq +=
11647                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
11648
11649         if (freq) {
11650                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
11651                 if (!connect.channel)
11652                         return -EINVAL;
11653         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
11654                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
11655                 freq = MHZ_TO_KHZ(freq);
11656                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
11657                 if (!connect.channel_hint)
11658                         return -EINVAL;
11659         }
11660
11661         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
11662                 connect.edmg.channels =
11663                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
11664
11665                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
11666                         connect.edmg.bw_config =
11667                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
11668         }
11669
11670         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
11671                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
11672                 if (IS_ERR(connkeys))
11673                         return PTR_ERR(connkeys);
11674         }
11675
11676         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
11677                 connect.flags |= ASSOC_REQ_DISABLE_HT;
11678
11679         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
11680                 memcpy(&connect.ht_capa_mask,
11681                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
11682                        sizeof(connect.ht_capa_mask));
11683
11684         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
11685                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
11686                         kfree_sensitive(connkeys);
11687                         return -EINVAL;
11688                 }
11689                 memcpy(&connect.ht_capa,
11690                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
11691                        sizeof(connect.ht_capa));
11692         }
11693
11694         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
11695                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
11696
11697         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
11698                 connect.flags |= ASSOC_REQ_DISABLE_HE;
11699
11700         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_EHT]))
11701                 connect.flags |= ASSOC_REQ_DISABLE_EHT;
11702
11703         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
11704                 memcpy(&connect.vht_capa_mask,
11705                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
11706                        sizeof(connect.vht_capa_mask));
11707
11708         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
11709                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
11710                         kfree_sensitive(connkeys);
11711                         return -EINVAL;
11712                 }
11713                 memcpy(&connect.vht_capa,
11714                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
11715                        sizeof(connect.vht_capa));
11716         }
11717
11718         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
11719                 if (!((rdev->wiphy.features &
11720                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
11721                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
11722                     !wiphy_ext_feature_isset(&rdev->wiphy,
11723                                              NL80211_EXT_FEATURE_RRM)) {
11724                         kfree_sensitive(connkeys);
11725                         return -EINVAL;
11726                 }
11727                 connect.flags |= ASSOC_REQ_USE_RRM;
11728         }
11729
11730         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
11731         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
11732                 kfree_sensitive(connkeys);
11733                 return -EOPNOTSUPP;
11734         }
11735
11736         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
11737                 /* bss selection makes no sense if bssid is set */
11738                 if (connect.bssid) {
11739                         kfree_sensitive(connkeys);
11740                         return -EINVAL;
11741                 }
11742
11743                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
11744                                        wiphy, &connect.bss_select);
11745                 if (err) {
11746                         kfree_sensitive(connkeys);
11747                         return err;
11748                 }
11749         }
11750
11751         if (wiphy_ext_feature_isset(&rdev->wiphy,
11752                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
11753             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11754             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11755             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11756             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11757                 connect.fils_erp_username =
11758                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11759                 connect.fils_erp_username_len =
11760                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11761                 connect.fils_erp_realm =
11762                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11763                 connect.fils_erp_realm_len =
11764                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11765                 connect.fils_erp_next_seq_num =
11766                         nla_get_u16(
11767                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11768                 connect.fils_erp_rrk =
11769                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11770                 connect.fils_erp_rrk_len =
11771                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11772         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11773                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11774                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11775                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11776                 kfree_sensitive(connkeys);
11777                 return -EINVAL;
11778         }
11779
11780         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
11781                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11782                         kfree_sensitive(connkeys);
11783                         GENL_SET_ERR_MSG(info,
11784                                          "external auth requires connection ownership");
11785                         return -EINVAL;
11786                 }
11787                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
11788         }
11789
11790         if (nla_get_flag(info->attrs[NL80211_ATTR_MLO_SUPPORT]))
11791                 connect.flags |= CONNECT_REQ_MLO_SUPPORT;
11792
11793         wdev_lock(dev->ieee80211_ptr);
11794
11795         err = cfg80211_connect(rdev, dev, &connect, connkeys,
11796                                connect.prev_bssid);
11797         if (err)
11798                 kfree_sensitive(connkeys);
11799
11800         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
11801                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11802                 if (connect.bssid)
11803                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
11804                                connect.bssid, ETH_ALEN);
11805                 else
11806                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
11807         }
11808
11809         wdev_unlock(dev->ieee80211_ptr);
11810
11811         return err;
11812 }
11813
11814 static int nl80211_update_connect_params(struct sk_buff *skb,
11815                                          struct genl_info *info)
11816 {
11817         struct cfg80211_connect_params connect = {};
11818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11819         struct net_device *dev = info->user_ptr[1];
11820         struct wireless_dev *wdev = dev->ieee80211_ptr;
11821         bool fils_sk_offload;
11822         u32 auth_type;
11823         u32 changed = 0;
11824         int ret;
11825
11826         if (!rdev->ops->update_connect_params)
11827                 return -EOPNOTSUPP;
11828
11829         if (info->attrs[NL80211_ATTR_IE]) {
11830                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
11831                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
11832                 changed |= UPDATE_ASSOC_IES;
11833         }
11834
11835         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
11836                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
11837
11838         /*
11839          * when driver supports fils-sk offload all attributes must be
11840          * provided. So the else covers "fils-sk-not-all" and
11841          * "no-fils-sk-any".
11842          */
11843         if (fils_sk_offload &&
11844             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
11845             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
11846             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
11847             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11848                 connect.fils_erp_username =
11849                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11850                 connect.fils_erp_username_len =
11851                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
11852                 connect.fils_erp_realm =
11853                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11854                 connect.fils_erp_realm_len =
11855                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
11856                 connect.fils_erp_next_seq_num =
11857                         nla_get_u16(
11858                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
11859                 connect.fils_erp_rrk =
11860                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11861                 connect.fils_erp_rrk_len =
11862                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
11863                 changed |= UPDATE_FILS_ERP_INFO;
11864         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
11865                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
11866                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
11867                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
11868                 return -EINVAL;
11869         }
11870
11871         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11872                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11873                 if (!nl80211_valid_auth_type(rdev, auth_type,
11874                                              NL80211_CMD_CONNECT))
11875                         return -EINVAL;
11876
11877                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11878                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11879                         return -EINVAL;
11880
11881                 connect.auth_type = auth_type;
11882                 changed |= UPDATE_AUTH_TYPE;
11883         }
11884
11885         wdev_lock(dev->ieee80211_ptr);
11886         if (!wdev->connected)
11887                 ret = -ENOLINK;
11888         else
11889                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11890         wdev_unlock(dev->ieee80211_ptr);
11891
11892         return ret;
11893 }
11894
11895 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11896 {
11897         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11898         struct net_device *dev = info->user_ptr[1];
11899         u16 reason;
11900         int ret;
11901
11902         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11903             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11904                 return -EPERM;
11905
11906         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11907                 reason = WLAN_REASON_DEAUTH_LEAVING;
11908         else
11909                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11910
11911         if (reason == 0)
11912                 return -EINVAL;
11913
11914         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11915             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11916                 return -EOPNOTSUPP;
11917
11918         wdev_lock(dev->ieee80211_ptr);
11919         ret = cfg80211_disconnect(rdev, dev, reason, true);
11920         wdev_unlock(dev->ieee80211_ptr);
11921         return ret;
11922 }
11923
11924 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11925 {
11926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11927         struct net *net;
11928         int err;
11929
11930         if (info->attrs[NL80211_ATTR_PID]) {
11931                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11932
11933                 net = get_net_ns_by_pid(pid);
11934         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11935                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11936
11937                 net = get_net_ns_by_fd(fd);
11938         } else {
11939                 return -EINVAL;
11940         }
11941
11942         if (IS_ERR(net))
11943                 return PTR_ERR(net);
11944
11945         err = 0;
11946
11947         /* check if anything to do */
11948         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11949                 err = cfg80211_switch_netns(rdev, net);
11950
11951         put_net(net);
11952         return err;
11953 }
11954
11955 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11956 {
11957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11958         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11959                         struct cfg80211_pmksa *pmksa) = NULL;
11960         struct net_device *dev = info->user_ptr[1];
11961         struct cfg80211_pmksa pmksa;
11962
11963         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11964
11965         if (!info->attrs[NL80211_ATTR_PMKID])
11966                 return -EINVAL;
11967
11968         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11969
11970         if (info->attrs[NL80211_ATTR_MAC]) {
11971                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11972         } else if (info->attrs[NL80211_ATTR_SSID] &&
11973                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11974                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11975                     info->attrs[NL80211_ATTR_PMK])) {
11976                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11977                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11978                 pmksa.cache_id =
11979                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11980         } else {
11981                 return -EINVAL;
11982         }
11983         if (info->attrs[NL80211_ATTR_PMK]) {
11984                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11985                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11986         }
11987
11988         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11989                 pmksa.pmk_lifetime =
11990                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11991
11992         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11993                 pmksa.pmk_reauth_threshold =
11994                         nla_get_u8(
11995                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11996
11997         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11998             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11999             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
12000               wiphy_ext_feature_isset(&rdev->wiphy,
12001                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
12002                 return -EOPNOTSUPP;
12003
12004         switch (info->genlhdr->cmd) {
12005         case NL80211_CMD_SET_PMKSA:
12006                 rdev_ops = rdev->ops->set_pmksa;
12007                 break;
12008         case NL80211_CMD_DEL_PMKSA:
12009                 rdev_ops = rdev->ops->del_pmksa;
12010                 break;
12011         default:
12012                 WARN_ON(1);
12013                 break;
12014         }
12015
12016         if (!rdev_ops)
12017                 return -EOPNOTSUPP;
12018
12019         return rdev_ops(&rdev->wiphy, dev, &pmksa);
12020 }
12021
12022 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
12023 {
12024         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12025         struct net_device *dev = info->user_ptr[1];
12026
12027         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
12028             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
12029                 return -EOPNOTSUPP;
12030
12031         if (!rdev->ops->flush_pmksa)
12032                 return -EOPNOTSUPP;
12033
12034         return rdev_flush_pmksa(rdev, dev);
12035 }
12036
12037 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
12038 {
12039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12040         struct net_device *dev = info->user_ptr[1];
12041         u8 action_code, dialog_token;
12042         u32 peer_capability = 0;
12043         u16 status_code;
12044         u8 *peer;
12045         bool initiator;
12046
12047         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12048             !rdev->ops->tdls_mgmt)
12049                 return -EOPNOTSUPP;
12050
12051         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
12052             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
12053             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
12054             !info->attrs[NL80211_ATTR_IE] ||
12055             !info->attrs[NL80211_ATTR_MAC])
12056                 return -EINVAL;
12057
12058         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12059         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
12060         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
12061         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
12062         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
12063         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
12064                 peer_capability =
12065                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
12066
12067         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
12068                               dialog_token, status_code, peer_capability,
12069                               initiator,
12070                               nla_data(info->attrs[NL80211_ATTR_IE]),
12071                               nla_len(info->attrs[NL80211_ATTR_IE]));
12072 }
12073
12074 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
12075 {
12076         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12077         struct net_device *dev = info->user_ptr[1];
12078         enum nl80211_tdls_operation operation;
12079         u8 *peer;
12080
12081         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
12082             !rdev->ops->tdls_oper)
12083                 return -EOPNOTSUPP;
12084
12085         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
12086             !info->attrs[NL80211_ATTR_MAC])
12087                 return -EINVAL;
12088
12089         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
12090         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
12091
12092         return rdev_tdls_oper(rdev, dev, peer, operation);
12093 }
12094
12095 static int nl80211_remain_on_channel(struct sk_buff *skb,
12096                                      struct genl_info *info)
12097 {
12098         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12099         unsigned int link_id = nl80211_link_id(info->attrs);
12100         struct wireless_dev *wdev = info->user_ptr[1];
12101         struct cfg80211_chan_def chandef;
12102         struct sk_buff *msg;
12103         void *hdr;
12104         u64 cookie;
12105         u32 duration;
12106         int err;
12107
12108         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
12109             !info->attrs[NL80211_ATTR_DURATION])
12110                 return -EINVAL;
12111
12112         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12113
12114         if (!rdev->ops->remain_on_channel ||
12115             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
12116                 return -EOPNOTSUPP;
12117
12118         /*
12119          * We should be on that channel for at least a minimum amount of
12120          * time (10ms) but no longer than the driver supports.
12121          */
12122         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12123             duration > rdev->wiphy.max_remain_on_channel_duration)
12124                 return -EINVAL;
12125
12126         err = nl80211_parse_chandef(rdev, info, &chandef);
12127         if (err)
12128                 return err;
12129
12130         wdev_lock(wdev);
12131         if (!cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12132                 const struct cfg80211_chan_def *oper_chandef, *compat_chandef;
12133
12134                 oper_chandef = wdev_chandef(wdev, link_id);
12135
12136                 if (WARN_ON(!oper_chandef)) {
12137                         /* cannot happen since we must beacon to get here */
12138                         WARN_ON(1);
12139                         wdev_unlock(wdev);
12140                         return -EBUSY;
12141                 }
12142
12143                 /* note: returns first one if identical chandefs */
12144                 compat_chandef = cfg80211_chandef_compatible(&chandef,
12145                                                              oper_chandef);
12146
12147                 if (compat_chandef != &chandef) {
12148                         wdev_unlock(wdev);
12149                         return -EBUSY;
12150                 }
12151         }
12152         wdev_unlock(wdev);
12153
12154         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12155         if (!msg)
12156                 return -ENOMEM;
12157
12158         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12159                              NL80211_CMD_REMAIN_ON_CHANNEL);
12160         if (!hdr) {
12161                 err = -ENOBUFS;
12162                 goto free_msg;
12163         }
12164
12165         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
12166                                      duration, &cookie);
12167
12168         if (err)
12169                 goto free_msg;
12170
12171         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12172                               NL80211_ATTR_PAD))
12173                 goto nla_put_failure;
12174
12175         genlmsg_end(msg, hdr);
12176
12177         return genlmsg_reply(msg, info);
12178
12179  nla_put_failure:
12180         err = -ENOBUFS;
12181  free_msg:
12182         nlmsg_free(msg);
12183         return err;
12184 }
12185
12186 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
12187                                             struct genl_info *info)
12188 {
12189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12190         struct wireless_dev *wdev = info->user_ptr[1];
12191         u64 cookie;
12192
12193         if (!info->attrs[NL80211_ATTR_COOKIE])
12194                 return -EINVAL;
12195
12196         if (!rdev->ops->cancel_remain_on_channel)
12197                 return -EOPNOTSUPP;
12198
12199         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12200
12201         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
12202 }
12203
12204 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
12205                                        struct genl_info *info)
12206 {
12207         struct cfg80211_bitrate_mask mask;
12208         unsigned int link_id = nl80211_link_id(info->attrs);
12209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12210         struct net_device *dev = info->user_ptr[1];
12211         struct wireless_dev *wdev = dev->ieee80211_ptr;
12212         int err;
12213
12214         if (!rdev->ops->set_bitrate_mask)
12215                 return -EOPNOTSUPP;
12216
12217         wdev_lock(wdev);
12218         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12219                                             NL80211_ATTR_TX_RATES, &mask,
12220                                             dev, true, link_id);
12221         if (err)
12222                 goto out;
12223
12224         err = rdev_set_bitrate_mask(rdev, dev, link_id, NULL, &mask);
12225 out:
12226         wdev_unlock(wdev);
12227         return err;
12228 }
12229
12230 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
12231 {
12232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12233         struct wireless_dev *wdev = info->user_ptr[1];
12234         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
12235
12236         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
12237                 return -EINVAL;
12238
12239         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
12240                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
12241
12242         switch (wdev->iftype) {
12243         case NL80211_IFTYPE_STATION:
12244         case NL80211_IFTYPE_ADHOC:
12245         case NL80211_IFTYPE_P2P_CLIENT:
12246         case NL80211_IFTYPE_AP:
12247         case NL80211_IFTYPE_AP_VLAN:
12248         case NL80211_IFTYPE_MESH_POINT:
12249         case NL80211_IFTYPE_P2P_GO:
12250         case NL80211_IFTYPE_P2P_DEVICE:
12251                 break;
12252         case NL80211_IFTYPE_NAN:
12253         default:
12254                 return -EOPNOTSUPP;
12255         }
12256
12257         /* not much point in registering if we can't reply */
12258         if (!rdev->ops->mgmt_tx)
12259                 return -EOPNOTSUPP;
12260
12261         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
12262             !wiphy_ext_feature_isset(&rdev->wiphy,
12263                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
12264                 GENL_SET_ERR_MSG(info,
12265                                  "multicast RX registrations are not supported");
12266                 return -EOPNOTSUPP;
12267         }
12268
12269         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
12270                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12271                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
12272                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
12273                                            info->extack);
12274 }
12275
12276 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
12277 {
12278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12279         struct wireless_dev *wdev = info->user_ptr[1];
12280         struct cfg80211_chan_def chandef;
12281         int err;
12282         void *hdr = NULL;
12283         u64 cookie;
12284         struct sk_buff *msg = NULL;
12285         struct cfg80211_mgmt_tx_params params = {
12286                 .dont_wait_for_ack =
12287                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
12288         };
12289
12290         if (!info->attrs[NL80211_ATTR_FRAME])
12291                 return -EINVAL;
12292
12293         if (!rdev->ops->mgmt_tx)
12294                 return -EOPNOTSUPP;
12295
12296         switch (wdev->iftype) {
12297         case NL80211_IFTYPE_P2P_DEVICE:
12298                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
12299                         return -EINVAL;
12300                 break;
12301         case NL80211_IFTYPE_STATION:
12302         case NL80211_IFTYPE_ADHOC:
12303         case NL80211_IFTYPE_P2P_CLIENT:
12304         case NL80211_IFTYPE_AP:
12305         case NL80211_IFTYPE_AP_VLAN:
12306         case NL80211_IFTYPE_MESH_POINT:
12307         case NL80211_IFTYPE_P2P_GO:
12308                 break;
12309         case NL80211_IFTYPE_NAN:
12310         default:
12311                 return -EOPNOTSUPP;
12312         }
12313
12314         if (info->attrs[NL80211_ATTR_DURATION]) {
12315                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12316                         return -EINVAL;
12317                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
12318
12319                 /*
12320                  * We should wait on the channel for at least a minimum amount
12321                  * of time (10ms) but no longer than the driver supports.
12322                  */
12323                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
12324                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
12325                         return -EINVAL;
12326         }
12327
12328         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
12329
12330         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
12331                 return -EINVAL;
12332
12333         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
12334
12335         /* get the channel if any has been specified, otherwise pass NULL to
12336          * the driver. The latter will use the current one
12337          */
12338         chandef.chan = NULL;
12339         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12340                 err = nl80211_parse_chandef(rdev, info, &chandef);
12341                 if (err)
12342                         return err;
12343         }
12344
12345         if (!chandef.chan && params.offchan)
12346                 return -EINVAL;
12347
12348         wdev_lock(wdev);
12349         if (params.offchan &&
12350             !cfg80211_off_channel_oper_allowed(wdev, chandef.chan)) {
12351                 wdev_unlock(wdev);
12352                 return -EBUSY;
12353         }
12354
12355         params.link_id = nl80211_link_id_or_invalid(info->attrs);
12356         /*
12357          * This now races due to the unlock, but we cannot check
12358          * the valid links for the _station_ anyway, so that's up
12359          * to the driver.
12360          */
12361         if (params.link_id >= 0 &&
12362             !(wdev->valid_links & BIT(params.link_id))) {
12363                 wdev_unlock(wdev);
12364                 return -EINVAL;
12365         }
12366         wdev_unlock(wdev);
12367
12368         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
12369         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
12370
12371         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
12372                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12373                 int i;
12374
12375                 if (len % sizeof(u16))
12376                         return -EINVAL;
12377
12378                 params.n_csa_offsets = len / sizeof(u16);
12379                 params.csa_offsets =
12380                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
12381
12382                 /* check that all the offsets fit the frame */
12383                 for (i = 0; i < params.n_csa_offsets; i++) {
12384                         if (params.csa_offsets[i] >= params.len)
12385                                 return -EINVAL;
12386                 }
12387         }
12388
12389         if (!params.dont_wait_for_ack) {
12390                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12391                 if (!msg)
12392                         return -ENOMEM;
12393
12394                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12395                                      NL80211_CMD_FRAME);
12396                 if (!hdr) {
12397                         err = -ENOBUFS;
12398                         goto free_msg;
12399                 }
12400         }
12401
12402         params.chan = chandef.chan;
12403         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
12404         if (err)
12405                 goto free_msg;
12406
12407         if (msg) {
12408                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12409                                       NL80211_ATTR_PAD))
12410                         goto nla_put_failure;
12411
12412                 genlmsg_end(msg, hdr);
12413                 return genlmsg_reply(msg, info);
12414         }
12415
12416         return 0;
12417
12418  nla_put_failure:
12419         err = -ENOBUFS;
12420  free_msg:
12421         nlmsg_free(msg);
12422         return err;
12423 }
12424
12425 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
12426 {
12427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12428         struct wireless_dev *wdev = info->user_ptr[1];
12429         u64 cookie;
12430
12431         if (!info->attrs[NL80211_ATTR_COOKIE])
12432                 return -EINVAL;
12433
12434         if (!rdev->ops->mgmt_tx_cancel_wait)
12435                 return -EOPNOTSUPP;
12436
12437         switch (wdev->iftype) {
12438         case NL80211_IFTYPE_STATION:
12439         case NL80211_IFTYPE_ADHOC:
12440         case NL80211_IFTYPE_P2P_CLIENT:
12441         case NL80211_IFTYPE_AP:
12442         case NL80211_IFTYPE_AP_VLAN:
12443         case NL80211_IFTYPE_P2P_GO:
12444         case NL80211_IFTYPE_P2P_DEVICE:
12445                 break;
12446         case NL80211_IFTYPE_NAN:
12447         default:
12448                 return -EOPNOTSUPP;
12449         }
12450
12451         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12452
12453         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
12454 }
12455
12456 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
12457 {
12458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12459         struct wireless_dev *wdev;
12460         struct net_device *dev = info->user_ptr[1];
12461         u8 ps_state;
12462         bool state;
12463         int err;
12464
12465         if (!info->attrs[NL80211_ATTR_PS_STATE])
12466                 return -EINVAL;
12467
12468         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
12469
12470         wdev = dev->ieee80211_ptr;
12471
12472         if (!rdev->ops->set_power_mgmt)
12473                 return -EOPNOTSUPP;
12474
12475         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
12476
12477         if (state == wdev->ps)
12478                 return 0;
12479
12480         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
12481         if (!err)
12482                 wdev->ps = state;
12483         return err;
12484 }
12485
12486 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
12487 {
12488         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12489         enum nl80211_ps_state ps_state;
12490         struct wireless_dev *wdev;
12491         struct net_device *dev = info->user_ptr[1];
12492         struct sk_buff *msg;
12493         void *hdr;
12494         int err;
12495
12496         wdev = dev->ieee80211_ptr;
12497
12498         if (!rdev->ops->set_power_mgmt)
12499                 return -EOPNOTSUPP;
12500
12501         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12502         if (!msg)
12503                 return -ENOMEM;
12504
12505         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12506                              NL80211_CMD_GET_POWER_SAVE);
12507         if (!hdr) {
12508                 err = -ENOBUFS;
12509                 goto free_msg;
12510         }
12511
12512         if (wdev->ps)
12513                 ps_state = NL80211_PS_ENABLED;
12514         else
12515                 ps_state = NL80211_PS_DISABLED;
12516
12517         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
12518                 goto nla_put_failure;
12519
12520         genlmsg_end(msg, hdr);
12521         return genlmsg_reply(msg, info);
12522
12523  nla_put_failure:
12524         err = -ENOBUFS;
12525  free_msg:
12526         nlmsg_free(msg);
12527         return err;
12528 }
12529
12530 static const struct nla_policy
12531 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
12532         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
12533         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
12534         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
12535         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
12536         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
12537         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
12538         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
12539 };
12540
12541 static int nl80211_set_cqm_txe(struct genl_info *info,
12542                                u32 rate, u32 pkts, u32 intvl)
12543 {
12544         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12545         struct net_device *dev = info->user_ptr[1];
12546         struct wireless_dev *wdev = dev->ieee80211_ptr;
12547
12548         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
12549                 return -EINVAL;
12550
12551         if (!rdev->ops->set_cqm_txe_config)
12552                 return -EOPNOTSUPP;
12553
12554         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12555             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12556                 return -EOPNOTSUPP;
12557
12558         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
12559 }
12560
12561 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
12562                                     struct net_device *dev)
12563 {
12564         struct wireless_dev *wdev = dev->ieee80211_ptr;
12565         s32 last, low, high;
12566         u32 hyst;
12567         int i, n, low_index;
12568         int err;
12569
12570         /* RSSI reporting disabled? */
12571         if (!wdev->cqm_config)
12572                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
12573
12574         /*
12575          * Obtain current RSSI value if possible, if not and no RSSI threshold
12576          * event has been received yet, we should receive an event after a
12577          * connection is established and enough beacons received to calculate
12578          * the average.
12579          */
12580         if (!wdev->cqm_config->last_rssi_event_value &&
12581             wdev->links[0].client.current_bss &&
12582             rdev->ops->get_station) {
12583                 struct station_info sinfo = {};
12584                 u8 *mac_addr;
12585
12586                 mac_addr = wdev->links[0].client.current_bss->pub.bssid;
12587
12588                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
12589                 if (err)
12590                         return err;
12591
12592                 cfg80211_sinfo_release_content(&sinfo);
12593                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
12594                         wdev->cqm_config->last_rssi_event_value =
12595                                 (s8) sinfo.rx_beacon_signal_avg;
12596         }
12597
12598         last = wdev->cqm_config->last_rssi_event_value;
12599         hyst = wdev->cqm_config->rssi_hyst;
12600         n = wdev->cqm_config->n_rssi_thresholds;
12601
12602         for (i = 0; i < n; i++) {
12603                 i = array_index_nospec(i, n);
12604                 if (last < wdev->cqm_config->rssi_thresholds[i])
12605                         break;
12606         }
12607
12608         low_index = i - 1;
12609         if (low_index >= 0) {
12610                 low_index = array_index_nospec(low_index, n);
12611                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
12612         } else {
12613                 low = S32_MIN;
12614         }
12615         if (i < n) {
12616                 i = array_index_nospec(i, n);
12617                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
12618         } else {
12619                 high = S32_MAX;
12620         }
12621
12622         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
12623 }
12624
12625 static int nl80211_set_cqm_rssi(struct genl_info *info,
12626                                 const s32 *thresholds, int n_thresholds,
12627                                 u32 hysteresis)
12628 {
12629         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12630         struct net_device *dev = info->user_ptr[1];
12631         struct wireless_dev *wdev = dev->ieee80211_ptr;
12632         int i, err;
12633         s32 prev = S32_MIN;
12634
12635         /* Check all values negative and sorted */
12636         for (i = 0; i < n_thresholds; i++) {
12637                 if (thresholds[i] > 0 || thresholds[i] <= prev)
12638                         return -EINVAL;
12639
12640                 prev = thresholds[i];
12641         }
12642
12643         if (wdev->iftype != NL80211_IFTYPE_STATION &&
12644             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
12645                 return -EOPNOTSUPP;
12646
12647         wdev_lock(wdev);
12648         cfg80211_cqm_config_free(wdev);
12649         wdev_unlock(wdev);
12650
12651         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
12652                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
12653                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
12654
12655                 return rdev_set_cqm_rssi_config(rdev, dev,
12656                                                 thresholds[0], hysteresis);
12657         }
12658
12659         if (!wiphy_ext_feature_isset(&rdev->wiphy,
12660                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
12661                 return -EOPNOTSUPP;
12662
12663         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
12664                 n_thresholds = 0;
12665
12666         wdev_lock(wdev);
12667         if (n_thresholds) {
12668                 struct cfg80211_cqm_config *cqm_config;
12669
12670                 cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
12671                                                  n_thresholds),
12672                                      GFP_KERNEL);
12673                 if (!cqm_config) {
12674                         err = -ENOMEM;
12675                         goto unlock;
12676                 }
12677
12678                 cqm_config->rssi_hyst = hysteresis;
12679                 cqm_config->n_rssi_thresholds = n_thresholds;
12680                 memcpy(cqm_config->rssi_thresholds, thresholds,
12681                        flex_array_size(cqm_config, rssi_thresholds,
12682                                        n_thresholds));
12683
12684                 wdev->cqm_config = cqm_config;
12685         }
12686
12687         err = cfg80211_cqm_rssi_update(rdev, dev);
12688
12689 unlock:
12690         wdev_unlock(wdev);
12691
12692         return err;
12693 }
12694
12695 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
12696 {
12697         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
12698         struct nlattr *cqm;
12699         int err;
12700
12701         cqm = info->attrs[NL80211_ATTR_CQM];
12702         if (!cqm)
12703                 return -EINVAL;
12704
12705         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
12706                                           nl80211_attr_cqm_policy,
12707                                           info->extack);
12708         if (err)
12709                 return err;
12710
12711         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
12712             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
12713                 const s32 *thresholds =
12714                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12715                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
12716                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
12717
12718                 if (len % 4)
12719                         return -EINVAL;
12720
12721                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
12722                                             hysteresis);
12723         }
12724
12725         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
12726             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
12727             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
12728                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
12729                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
12730                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
12731
12732                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
12733         }
12734
12735         return -EINVAL;
12736 }
12737
12738 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
12739 {
12740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12741         struct net_device *dev = info->user_ptr[1];
12742         struct ocb_setup setup = {};
12743         int err;
12744
12745         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12746         if (err)
12747                 return err;
12748
12749         return cfg80211_join_ocb(rdev, dev, &setup);
12750 }
12751
12752 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
12753 {
12754         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12755         struct net_device *dev = info->user_ptr[1];
12756
12757         return cfg80211_leave_ocb(rdev, dev);
12758 }
12759
12760 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
12761 {
12762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12763         struct net_device *dev = info->user_ptr[1];
12764         struct mesh_config cfg;
12765         struct mesh_setup setup;
12766         int err;
12767
12768         /* start with default */
12769         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
12770         memcpy(&setup, &default_mesh_setup, sizeof(setup));
12771
12772         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
12773                 /* and parse parameters if given */
12774                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
12775                 if (err)
12776                         return err;
12777         }
12778
12779         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
12780             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
12781                 return -EINVAL;
12782
12783         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
12784         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
12785
12786         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
12787             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
12788                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
12789                         return -EINVAL;
12790
12791         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
12792                 setup.beacon_interval =
12793                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
12794
12795                 err = cfg80211_validate_beacon_int(rdev,
12796                                                    NL80211_IFTYPE_MESH_POINT,
12797                                                    setup.beacon_interval);
12798                 if (err)
12799                         return err;
12800         }
12801
12802         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
12803                 setup.dtim_period =
12804                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
12805                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
12806                         return -EINVAL;
12807         }
12808
12809         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
12810                 /* parse additional setup parameters if given */
12811                 err = nl80211_parse_mesh_setup(info, &setup);
12812                 if (err)
12813                         return err;
12814         }
12815
12816         if (setup.user_mpm)
12817                 cfg.auto_open_plinks = false;
12818
12819         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
12820                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
12821                 if (err)
12822                         return err;
12823         } else {
12824                 /* __cfg80211_join_mesh() will sort it out */
12825                 setup.chandef.chan = NULL;
12826         }
12827
12828         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
12829                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12830                 int n_rates =
12831                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
12832                 struct ieee80211_supported_band *sband;
12833
12834                 if (!setup.chandef.chan)
12835                         return -EINVAL;
12836
12837                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
12838
12839                 err = ieee80211_get_ratemask(sband, rates, n_rates,
12840                                              &setup.basic_rates);
12841                 if (err)
12842                         return err;
12843         }
12844
12845         if (info->attrs[NL80211_ATTR_TX_RATES]) {
12846                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
12847                                                     NL80211_ATTR_TX_RATES,
12848                                                     &setup.beacon_rate,
12849                                                     dev, false, 0);
12850                 if (err)
12851                         return err;
12852
12853                 if (!setup.chandef.chan)
12854                         return -EINVAL;
12855
12856                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
12857                                               &setup.beacon_rate);
12858                 if (err)
12859                         return err;
12860         }
12861
12862         setup.userspace_handles_dfs =
12863                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
12864
12865         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
12866                 int r = validate_pae_over_nl80211(rdev, info);
12867
12868                 if (r < 0)
12869                         return r;
12870
12871                 setup.control_port_over_nl80211 = true;
12872         }
12873
12874         wdev_lock(dev->ieee80211_ptr);
12875         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
12876         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
12877                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
12878         wdev_unlock(dev->ieee80211_ptr);
12879
12880         return err;
12881 }
12882
12883 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
12884 {
12885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12886         struct net_device *dev = info->user_ptr[1];
12887
12888         return cfg80211_leave_mesh(rdev, dev);
12889 }
12890
12891 #ifdef CONFIG_PM
12892 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
12893                                         struct cfg80211_registered_device *rdev)
12894 {
12895         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
12896         struct nlattr *nl_pats, *nl_pat;
12897         int i, pat_len;
12898
12899         if (!wowlan->n_patterns)
12900                 return 0;
12901
12902         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12903         if (!nl_pats)
12904                 return -ENOBUFS;
12905
12906         for (i = 0; i < wowlan->n_patterns; i++) {
12907                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12908                 if (!nl_pat)
12909                         return -ENOBUFS;
12910                 pat_len = wowlan->patterns[i].pattern_len;
12911                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12912                             wowlan->patterns[i].mask) ||
12913                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12914                             wowlan->patterns[i].pattern) ||
12915                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12916                                 wowlan->patterns[i].pkt_offset))
12917                         return -ENOBUFS;
12918                 nla_nest_end(msg, nl_pat);
12919         }
12920         nla_nest_end(msg, nl_pats);
12921
12922         return 0;
12923 }
12924
12925 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12926                                    struct cfg80211_wowlan_tcp *tcp)
12927 {
12928         struct nlattr *nl_tcp;
12929
12930         if (!tcp)
12931                 return 0;
12932
12933         nl_tcp = nla_nest_start_noflag(msg,
12934                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12935         if (!nl_tcp)
12936                 return -ENOBUFS;
12937
12938         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12939             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12940             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12941             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12942             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12943             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12944                     tcp->payload_len, tcp->payload) ||
12945             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12946                         tcp->data_interval) ||
12947             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12948                     tcp->wake_len, tcp->wake_data) ||
12949             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12950                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12951                 return -ENOBUFS;
12952
12953         if (tcp->payload_seq.len &&
12954             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12955                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12956                 return -ENOBUFS;
12957
12958         if (tcp->payload_tok.len &&
12959             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12960                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12961                     &tcp->payload_tok))
12962                 return -ENOBUFS;
12963
12964         nla_nest_end(msg, nl_tcp);
12965
12966         return 0;
12967 }
12968
12969 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12970                                   struct cfg80211_sched_scan_request *req)
12971 {
12972         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12973         int i;
12974
12975         if (!req)
12976                 return 0;
12977
12978         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12979         if (!nd)
12980                 return -ENOBUFS;
12981
12982         if (req->n_scan_plans == 1 &&
12983             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12984                         req->scan_plans[0].interval * 1000))
12985                 return -ENOBUFS;
12986
12987         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12988                 return -ENOBUFS;
12989
12990         if (req->relative_rssi_set) {
12991                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12992
12993                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12994                                req->relative_rssi))
12995                         return -ENOBUFS;
12996
12997                 rssi_adjust.band = req->rssi_adjust.band;
12998                 rssi_adjust.delta = req->rssi_adjust.delta;
12999                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
13000                             sizeof(rssi_adjust), &rssi_adjust))
13001                         return -ENOBUFS;
13002         }
13003
13004         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
13005         if (!freqs)
13006                 return -ENOBUFS;
13007
13008         for (i = 0; i < req->n_channels; i++) {
13009                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
13010                         return -ENOBUFS;
13011         }
13012
13013         nla_nest_end(msg, freqs);
13014
13015         if (req->n_match_sets) {
13016                 matches = nla_nest_start_noflag(msg,
13017                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
13018                 if (!matches)
13019                         return -ENOBUFS;
13020
13021                 for (i = 0; i < req->n_match_sets; i++) {
13022                         match = nla_nest_start_noflag(msg, i);
13023                         if (!match)
13024                                 return -ENOBUFS;
13025
13026                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
13027                                     req->match_sets[i].ssid.ssid_len,
13028                                     req->match_sets[i].ssid.ssid))
13029                                 return -ENOBUFS;
13030                         nla_nest_end(msg, match);
13031                 }
13032                 nla_nest_end(msg, matches);
13033         }
13034
13035         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
13036         if (!scan_plans)
13037                 return -ENOBUFS;
13038
13039         for (i = 0; i < req->n_scan_plans; i++) {
13040                 scan_plan = nla_nest_start_noflag(msg, i + 1);
13041                 if (!scan_plan)
13042                         return -ENOBUFS;
13043
13044                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
13045                                 req->scan_plans[i].interval) ||
13046                     (req->scan_plans[i].iterations &&
13047                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
13048                                  req->scan_plans[i].iterations)))
13049                         return -ENOBUFS;
13050                 nla_nest_end(msg, scan_plan);
13051         }
13052         nla_nest_end(msg, scan_plans);
13053
13054         nla_nest_end(msg, nd);
13055
13056         return 0;
13057 }
13058
13059 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
13060 {
13061         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13062         struct sk_buff *msg;
13063         void *hdr;
13064         u32 size = NLMSG_DEFAULT_SIZE;
13065
13066         if (!rdev->wiphy.wowlan)
13067                 return -EOPNOTSUPP;
13068
13069         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
13070                 /* adjust size to have room for all the data */
13071                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
13072                         rdev->wiphy.wowlan_config->tcp->payload_len +
13073                         rdev->wiphy.wowlan_config->tcp->wake_len +
13074                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
13075         }
13076
13077         msg = nlmsg_new(size, GFP_KERNEL);
13078         if (!msg)
13079                 return -ENOMEM;
13080
13081         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13082                              NL80211_CMD_GET_WOWLAN);
13083         if (!hdr)
13084                 goto nla_put_failure;
13085
13086         if (rdev->wiphy.wowlan_config) {
13087                 struct nlattr *nl_wowlan;
13088
13089                 nl_wowlan = nla_nest_start_noflag(msg,
13090                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
13091                 if (!nl_wowlan)
13092                         goto nla_put_failure;
13093
13094                 if ((rdev->wiphy.wowlan_config->any &&
13095                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
13096                     (rdev->wiphy.wowlan_config->disconnect &&
13097                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
13098                     (rdev->wiphy.wowlan_config->magic_pkt &&
13099                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
13100                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
13101                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
13102                     (rdev->wiphy.wowlan_config->eap_identity_req &&
13103                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
13104                     (rdev->wiphy.wowlan_config->four_way_handshake &&
13105                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
13106                     (rdev->wiphy.wowlan_config->rfkill_release &&
13107                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
13108                         goto nla_put_failure;
13109
13110                 if (nl80211_send_wowlan_patterns(msg, rdev))
13111                         goto nla_put_failure;
13112
13113                 if (nl80211_send_wowlan_tcp(msg,
13114                                             rdev->wiphy.wowlan_config->tcp))
13115                         goto nla_put_failure;
13116
13117                 if (nl80211_send_wowlan_nd(
13118                             msg,
13119                             rdev->wiphy.wowlan_config->nd_config))
13120                         goto nla_put_failure;
13121
13122                 nla_nest_end(msg, nl_wowlan);
13123         }
13124
13125         genlmsg_end(msg, hdr);
13126         return genlmsg_reply(msg, info);
13127
13128 nla_put_failure:
13129         nlmsg_free(msg);
13130         return -ENOBUFS;
13131 }
13132
13133 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
13134                                     struct nlattr *attr,
13135                                     struct cfg80211_wowlan *trig)
13136 {
13137         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
13138         struct cfg80211_wowlan_tcp *cfg;
13139         struct nl80211_wowlan_tcp_data_token *tok = NULL;
13140         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
13141         u32 size;
13142         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
13143         int err, port;
13144
13145         if (!rdev->wiphy.wowlan->tcp)
13146                 return -EINVAL;
13147
13148         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
13149                                           nl80211_wowlan_tcp_policy, NULL);
13150         if (err)
13151                 return err;
13152
13153         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
13154             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
13155             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
13156             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
13157             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
13158             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
13159             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
13160             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
13161                 return -EINVAL;
13162
13163         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
13164         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
13165                 return -EINVAL;
13166
13167         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
13168                         rdev->wiphy.wowlan->tcp->data_interval_max ||
13169             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
13170                 return -EINVAL;
13171
13172         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
13173         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
13174                 return -EINVAL;
13175
13176         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
13177         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
13178                 return -EINVAL;
13179
13180         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
13181                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13182
13183                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
13184                 tokens_size = tokln - sizeof(*tok);
13185
13186                 if (!tok->len || tokens_size % tok->len)
13187                         return -EINVAL;
13188                 if (!rdev->wiphy.wowlan->tcp->tok)
13189                         return -EINVAL;
13190                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
13191                         return -EINVAL;
13192                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
13193                         return -EINVAL;
13194                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
13195                         return -EINVAL;
13196                 if (tok->offset + tok->len > data_size)
13197                         return -EINVAL;
13198         }
13199
13200         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
13201                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
13202                 if (!rdev->wiphy.wowlan->tcp->seq)
13203                         return -EINVAL;
13204                 if (seq->len == 0 || seq->len > 4)
13205                         return -EINVAL;
13206                 if (seq->len + seq->offset > data_size)
13207                         return -EINVAL;
13208         }
13209
13210         size = sizeof(*cfg);
13211         size += data_size;
13212         size += wake_size + wake_mask_size;
13213         size += tokens_size;
13214
13215         cfg = kzalloc(size, GFP_KERNEL);
13216         if (!cfg)
13217                 return -ENOMEM;
13218         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
13219         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
13220         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
13221                ETH_ALEN);
13222         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
13223                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
13224         else
13225                 port = 0;
13226 #ifdef CONFIG_INET
13227         /* allocate a socket and port for it and use it */
13228         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
13229                             IPPROTO_TCP, &cfg->sock, 1);
13230         if (err) {
13231                 kfree(cfg);
13232                 return err;
13233         }
13234         if (inet_csk_get_port(cfg->sock->sk, port)) {
13235                 sock_release(cfg->sock);
13236                 kfree(cfg);
13237                 return -EADDRINUSE;
13238         }
13239         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
13240 #else
13241         if (!port) {
13242                 kfree(cfg);
13243                 return -EINVAL;
13244         }
13245         cfg->src_port = port;
13246 #endif
13247
13248         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
13249         cfg->payload_len = data_size;
13250         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
13251         memcpy((void *)cfg->payload,
13252                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
13253                data_size);
13254         if (seq)
13255                 cfg->payload_seq = *seq;
13256         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
13257         cfg->wake_len = wake_size;
13258         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
13259         memcpy((void *)cfg->wake_data,
13260                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
13261                wake_size);
13262         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
13263                          data_size + wake_size;
13264         memcpy((void *)cfg->wake_mask,
13265                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
13266                wake_mask_size);
13267         if (tok) {
13268                 cfg->tokens_size = tokens_size;
13269                 cfg->payload_tok = *tok;
13270                 memcpy(cfg->payload_tok.token_stream, tok->token_stream,
13271                        tokens_size);
13272         }
13273
13274         trig->tcp = cfg;
13275
13276         return 0;
13277 }
13278
13279 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
13280                                    const struct wiphy_wowlan_support *wowlan,
13281                                    struct nlattr *attr,
13282                                    struct cfg80211_wowlan *trig)
13283 {
13284         struct nlattr **tb;
13285         int err;
13286
13287         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
13288         if (!tb)
13289                 return -ENOMEM;
13290
13291         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
13292                 err = -EOPNOTSUPP;
13293                 goto out;
13294         }
13295
13296         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
13297                                           nl80211_policy, NULL);
13298         if (err)
13299                 goto out;
13300
13301         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
13302                                                    wowlan->max_nd_match_sets);
13303         err = PTR_ERR_OR_ZERO(trig->nd_config);
13304         if (err)
13305                 trig->nd_config = NULL;
13306
13307 out:
13308         kfree(tb);
13309         return err;
13310 }
13311
13312 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
13313 {
13314         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13315         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
13316         struct cfg80211_wowlan new_triggers = {};
13317         struct cfg80211_wowlan *ntrig;
13318         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
13319         int err, i;
13320         bool prev_enabled = rdev->wiphy.wowlan_config;
13321         bool regular = false;
13322
13323         if (!wowlan)
13324                 return -EOPNOTSUPP;
13325
13326         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
13327                 cfg80211_rdev_free_wowlan(rdev);
13328                 rdev->wiphy.wowlan_config = NULL;
13329                 goto set_wakeup;
13330         }
13331
13332         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
13333                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
13334                                           nl80211_wowlan_policy, info->extack);
13335         if (err)
13336                 return err;
13337
13338         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
13339                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
13340                         return -EINVAL;
13341                 new_triggers.any = true;
13342         }
13343
13344         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
13345                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
13346                         return -EINVAL;
13347                 new_triggers.disconnect = true;
13348                 regular = true;
13349         }
13350
13351         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
13352                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
13353                         return -EINVAL;
13354                 new_triggers.magic_pkt = true;
13355                 regular = true;
13356         }
13357
13358         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
13359                 return -EINVAL;
13360
13361         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
13362                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
13363                         return -EINVAL;
13364                 new_triggers.gtk_rekey_failure = true;
13365                 regular = true;
13366         }
13367
13368         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
13369                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
13370                         return -EINVAL;
13371                 new_triggers.eap_identity_req = true;
13372                 regular = true;
13373         }
13374
13375         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
13376                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
13377                         return -EINVAL;
13378                 new_triggers.four_way_handshake = true;
13379                 regular = true;
13380         }
13381
13382         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
13383                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
13384                         return -EINVAL;
13385                 new_triggers.rfkill_release = true;
13386                 regular = true;
13387         }
13388
13389         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
13390                 struct nlattr *pat;
13391                 int n_patterns = 0;
13392                 int rem, pat_len, mask_len, pkt_offset;
13393                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13394
13395                 regular = true;
13396
13397                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13398                                     rem)
13399                         n_patterns++;
13400                 if (n_patterns > wowlan->n_patterns)
13401                         return -EINVAL;
13402
13403                 new_triggers.patterns = kcalloc(n_patterns,
13404                                                 sizeof(new_triggers.patterns[0]),
13405                                                 GFP_KERNEL);
13406                 if (!new_triggers.patterns)
13407                         return -ENOMEM;
13408
13409                 new_triggers.n_patterns = n_patterns;
13410                 i = 0;
13411
13412                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
13413                                     rem) {
13414                         u8 *mask_pat;
13415
13416                         err = nla_parse_nested_deprecated(pat_tb,
13417                                                           MAX_NL80211_PKTPAT,
13418                                                           pat,
13419                                                           nl80211_packet_pattern_policy,
13420                                                           info->extack);
13421                         if (err)
13422                                 goto error;
13423
13424                         err = -EINVAL;
13425                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
13426                             !pat_tb[NL80211_PKTPAT_PATTERN])
13427                                 goto error;
13428                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13429                         mask_len = DIV_ROUND_UP(pat_len, 8);
13430                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13431                                 goto error;
13432                         if (pat_len > wowlan->pattern_max_len ||
13433                             pat_len < wowlan->pattern_min_len)
13434                                 goto error;
13435
13436                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
13437                                 pkt_offset = 0;
13438                         else
13439                                 pkt_offset = nla_get_u32(
13440                                         pat_tb[NL80211_PKTPAT_OFFSET]);
13441                         if (pkt_offset > wowlan->max_pkt_offset)
13442                                 goto error;
13443                         new_triggers.patterns[i].pkt_offset = pkt_offset;
13444
13445                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13446                         if (!mask_pat) {
13447                                 err = -ENOMEM;
13448                                 goto error;
13449                         }
13450                         new_triggers.patterns[i].mask = mask_pat;
13451                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13452                                mask_len);
13453                         mask_pat += mask_len;
13454                         new_triggers.patterns[i].pattern = mask_pat;
13455                         new_triggers.patterns[i].pattern_len = pat_len;
13456                         memcpy(mask_pat,
13457                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13458                                pat_len);
13459                         i++;
13460                 }
13461         }
13462
13463         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
13464                 regular = true;
13465                 err = nl80211_parse_wowlan_tcp(
13466                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
13467                         &new_triggers);
13468                 if (err)
13469                         goto error;
13470         }
13471
13472         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
13473                 regular = true;
13474                 err = nl80211_parse_wowlan_nd(
13475                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
13476                         &new_triggers);
13477                 if (err)
13478                         goto error;
13479         }
13480
13481         /* The 'any' trigger means the device continues operating more or less
13482          * as in its normal operation mode and wakes up the host on most of the
13483          * normal interrupts (like packet RX, ...)
13484          * It therefore makes little sense to combine with the more constrained
13485          * wakeup trigger modes.
13486          */
13487         if (new_triggers.any && regular) {
13488                 err = -EINVAL;
13489                 goto error;
13490         }
13491
13492         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
13493         if (!ntrig) {
13494                 err = -ENOMEM;
13495                 goto error;
13496         }
13497         cfg80211_rdev_free_wowlan(rdev);
13498         rdev->wiphy.wowlan_config = ntrig;
13499
13500  set_wakeup:
13501         if (rdev->ops->set_wakeup &&
13502             prev_enabled != !!rdev->wiphy.wowlan_config)
13503                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
13504
13505         return 0;
13506  error:
13507         for (i = 0; i < new_triggers.n_patterns; i++)
13508                 kfree(new_triggers.patterns[i].mask);
13509         kfree(new_triggers.patterns);
13510         if (new_triggers.tcp && new_triggers.tcp->sock)
13511                 sock_release(new_triggers.tcp->sock);
13512         kfree(new_triggers.tcp);
13513         kfree(new_triggers.nd_config);
13514         return err;
13515 }
13516 #endif
13517
13518 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
13519                                        struct cfg80211_registered_device *rdev)
13520 {
13521         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
13522         int i, j, pat_len;
13523         struct cfg80211_coalesce_rules *rule;
13524
13525         if (!rdev->coalesce->n_rules)
13526                 return 0;
13527
13528         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
13529         if (!nl_rules)
13530                 return -ENOBUFS;
13531
13532         for (i = 0; i < rdev->coalesce->n_rules; i++) {
13533                 nl_rule = nla_nest_start_noflag(msg, i + 1);
13534                 if (!nl_rule)
13535                         return -ENOBUFS;
13536
13537                 rule = &rdev->coalesce->rules[i];
13538                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
13539                                 rule->delay))
13540                         return -ENOBUFS;
13541
13542                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
13543                                 rule->condition))
13544                         return -ENOBUFS;
13545
13546                 nl_pats = nla_nest_start_noflag(msg,
13547                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
13548                 if (!nl_pats)
13549                         return -ENOBUFS;
13550
13551                 for (j = 0; j < rule->n_patterns; j++) {
13552                         nl_pat = nla_nest_start_noflag(msg, j + 1);
13553                         if (!nl_pat)
13554                                 return -ENOBUFS;
13555                         pat_len = rule->patterns[j].pattern_len;
13556                         if (nla_put(msg, NL80211_PKTPAT_MASK,
13557                                     DIV_ROUND_UP(pat_len, 8),
13558                                     rule->patterns[j].mask) ||
13559                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
13560                                     rule->patterns[j].pattern) ||
13561                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
13562                                         rule->patterns[j].pkt_offset))
13563                                 return -ENOBUFS;
13564                         nla_nest_end(msg, nl_pat);
13565                 }
13566                 nla_nest_end(msg, nl_pats);
13567                 nla_nest_end(msg, nl_rule);
13568         }
13569         nla_nest_end(msg, nl_rules);
13570
13571         return 0;
13572 }
13573
13574 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
13575 {
13576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13577         struct sk_buff *msg;
13578         void *hdr;
13579
13580         if (!rdev->wiphy.coalesce)
13581                 return -EOPNOTSUPP;
13582
13583         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13584         if (!msg)
13585                 return -ENOMEM;
13586
13587         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13588                              NL80211_CMD_GET_COALESCE);
13589         if (!hdr)
13590                 goto nla_put_failure;
13591
13592         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
13593                 goto nla_put_failure;
13594
13595         genlmsg_end(msg, hdr);
13596         return genlmsg_reply(msg, info);
13597
13598 nla_put_failure:
13599         nlmsg_free(msg);
13600         return -ENOBUFS;
13601 }
13602
13603 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
13604 {
13605         struct cfg80211_coalesce *coalesce = rdev->coalesce;
13606         int i, j;
13607         struct cfg80211_coalesce_rules *rule;
13608
13609         if (!coalesce)
13610                 return;
13611
13612         for (i = 0; i < coalesce->n_rules; i++) {
13613                 rule = &coalesce->rules[i];
13614                 for (j = 0; j < rule->n_patterns; j++)
13615                         kfree(rule->patterns[j].mask);
13616                 kfree(rule->patterns);
13617         }
13618         kfree(coalesce->rules);
13619         kfree(coalesce);
13620         rdev->coalesce = NULL;
13621 }
13622
13623 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
13624                                        struct nlattr *rule,
13625                                        struct cfg80211_coalesce_rules *new_rule)
13626 {
13627         int err, i;
13628         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13629         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
13630         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
13631         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
13632
13633         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
13634                                           rule, nl80211_coalesce_policy, NULL);
13635         if (err)
13636                 return err;
13637
13638         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
13639                 new_rule->delay =
13640                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
13641         if (new_rule->delay > coalesce->max_delay)
13642                 return -EINVAL;
13643
13644         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
13645                 new_rule->condition =
13646                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
13647
13648         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
13649                 return -EINVAL;
13650
13651         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13652                             rem)
13653                 n_patterns++;
13654         if (n_patterns > coalesce->n_patterns)
13655                 return -EINVAL;
13656
13657         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
13658                                      GFP_KERNEL);
13659         if (!new_rule->patterns)
13660                 return -ENOMEM;
13661
13662         new_rule->n_patterns = n_patterns;
13663         i = 0;
13664
13665         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
13666                             rem) {
13667                 u8 *mask_pat;
13668
13669                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
13670                                                   pat,
13671                                                   nl80211_packet_pattern_policy,
13672                                                   NULL);
13673                 if (err)
13674                         return err;
13675
13676                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
13677                     !pat_tb[NL80211_PKTPAT_PATTERN])
13678                         return -EINVAL;
13679                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
13680                 mask_len = DIV_ROUND_UP(pat_len, 8);
13681                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
13682                         return -EINVAL;
13683                 if (pat_len > coalesce->pattern_max_len ||
13684                     pat_len < coalesce->pattern_min_len)
13685                         return -EINVAL;
13686
13687                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
13688                         pkt_offset = 0;
13689                 else
13690                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
13691                 if (pkt_offset > coalesce->max_pkt_offset)
13692                         return -EINVAL;
13693                 new_rule->patterns[i].pkt_offset = pkt_offset;
13694
13695                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
13696                 if (!mask_pat)
13697                         return -ENOMEM;
13698
13699                 new_rule->patterns[i].mask = mask_pat;
13700                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
13701                        mask_len);
13702
13703                 mask_pat += mask_len;
13704                 new_rule->patterns[i].pattern = mask_pat;
13705                 new_rule->patterns[i].pattern_len = pat_len;
13706                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
13707                        pat_len);
13708                 i++;
13709         }
13710
13711         return 0;
13712 }
13713
13714 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
13715 {
13716         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13717         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
13718         struct cfg80211_coalesce new_coalesce = {};
13719         struct cfg80211_coalesce *n_coalesce;
13720         int err, rem_rule, n_rules = 0, i, j;
13721         struct nlattr *rule;
13722         struct cfg80211_coalesce_rules *tmp_rule;
13723
13724         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
13725                 return -EOPNOTSUPP;
13726
13727         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
13728                 cfg80211_rdev_free_coalesce(rdev);
13729                 rdev_set_coalesce(rdev, NULL);
13730                 return 0;
13731         }
13732
13733         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13734                             rem_rule)
13735                 n_rules++;
13736         if (n_rules > coalesce->n_rules)
13737                 return -EINVAL;
13738
13739         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
13740                                      GFP_KERNEL);
13741         if (!new_coalesce.rules)
13742                 return -ENOMEM;
13743
13744         new_coalesce.n_rules = n_rules;
13745         i = 0;
13746
13747         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
13748                             rem_rule) {
13749                 err = nl80211_parse_coalesce_rule(rdev, rule,
13750                                                   &new_coalesce.rules[i]);
13751                 if (err)
13752                         goto error;
13753
13754                 i++;
13755         }
13756
13757         err = rdev_set_coalesce(rdev, &new_coalesce);
13758         if (err)
13759                 goto error;
13760
13761         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
13762         if (!n_coalesce) {
13763                 err = -ENOMEM;
13764                 goto error;
13765         }
13766         cfg80211_rdev_free_coalesce(rdev);
13767         rdev->coalesce = n_coalesce;
13768
13769         return 0;
13770 error:
13771         for (i = 0; i < new_coalesce.n_rules; i++) {
13772                 tmp_rule = &new_coalesce.rules[i];
13773                 for (j = 0; j < tmp_rule->n_patterns; j++)
13774                         kfree(tmp_rule->patterns[j].mask);
13775                 kfree(tmp_rule->patterns);
13776         }
13777         kfree(new_coalesce.rules);
13778
13779         return err;
13780 }
13781
13782 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
13783 {
13784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13785         struct net_device *dev = info->user_ptr[1];
13786         struct wireless_dev *wdev = dev->ieee80211_ptr;
13787         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
13788         struct cfg80211_gtk_rekey_data rekey_data = {};
13789         int err;
13790
13791         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
13792                 return -EINVAL;
13793
13794         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
13795                                           info->attrs[NL80211_ATTR_REKEY_DATA],
13796                                           nl80211_rekey_policy, info->extack);
13797         if (err)
13798                 return err;
13799
13800         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
13801             !tb[NL80211_REKEY_DATA_KCK])
13802                 return -EINVAL;
13803         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
13804             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13805               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
13806                 return -ERANGE;
13807         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
13808             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
13809               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN))
13810                 return -ERANGE;
13811
13812         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
13813         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
13814         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
13815         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
13816         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
13817         if (tb[NL80211_REKEY_DATA_AKM])
13818                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
13819
13820         wdev_lock(wdev);
13821         if (!wdev->connected) {
13822                 err = -ENOTCONN;
13823                 goto out;
13824         }
13825
13826         if (!rdev->ops->set_rekey_data) {
13827                 err = -EOPNOTSUPP;
13828                 goto out;
13829         }
13830
13831         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
13832  out:
13833         wdev_unlock(wdev);
13834         return err;
13835 }
13836
13837 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
13838                                              struct genl_info *info)
13839 {
13840         struct net_device *dev = info->user_ptr[1];
13841         struct wireless_dev *wdev = dev->ieee80211_ptr;
13842
13843         if (wdev->iftype != NL80211_IFTYPE_AP &&
13844             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13845                 return -EINVAL;
13846
13847         if (wdev->ap_unexpected_nlportid)
13848                 return -EBUSY;
13849
13850         wdev->ap_unexpected_nlportid = info->snd_portid;
13851         return 0;
13852 }
13853
13854 static int nl80211_probe_client(struct sk_buff *skb,
13855                                 struct genl_info *info)
13856 {
13857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13858         struct net_device *dev = info->user_ptr[1];
13859         struct wireless_dev *wdev = dev->ieee80211_ptr;
13860         struct sk_buff *msg;
13861         void *hdr;
13862         const u8 *addr;
13863         u64 cookie;
13864         int err;
13865
13866         if (wdev->iftype != NL80211_IFTYPE_AP &&
13867             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13868                 return -EOPNOTSUPP;
13869
13870         if (!info->attrs[NL80211_ATTR_MAC])
13871                 return -EINVAL;
13872
13873         if (!rdev->ops->probe_client)
13874                 return -EOPNOTSUPP;
13875
13876         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13877         if (!msg)
13878                 return -ENOMEM;
13879
13880         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13881                              NL80211_CMD_PROBE_CLIENT);
13882         if (!hdr) {
13883                 err = -ENOBUFS;
13884                 goto free_msg;
13885         }
13886
13887         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13888
13889         err = rdev_probe_client(rdev, dev, addr, &cookie);
13890         if (err)
13891                 goto free_msg;
13892
13893         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13894                               NL80211_ATTR_PAD))
13895                 goto nla_put_failure;
13896
13897         genlmsg_end(msg, hdr);
13898
13899         return genlmsg_reply(msg, info);
13900
13901  nla_put_failure:
13902         err = -ENOBUFS;
13903  free_msg:
13904         nlmsg_free(msg);
13905         return err;
13906 }
13907
13908 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13909 {
13910         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13911         struct cfg80211_beacon_registration *reg, *nreg;
13912         int rv;
13913
13914         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13915                 return -EOPNOTSUPP;
13916
13917         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13918         if (!nreg)
13919                 return -ENOMEM;
13920
13921         /* First, check if already registered. */
13922         spin_lock_bh(&rdev->beacon_registrations_lock);
13923         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13924                 if (reg->nlportid == info->snd_portid) {
13925                         rv = -EALREADY;
13926                         goto out_err;
13927                 }
13928         }
13929         /* Add it to the list */
13930         nreg->nlportid = info->snd_portid;
13931         list_add(&nreg->list, &rdev->beacon_registrations);
13932
13933         spin_unlock_bh(&rdev->beacon_registrations_lock);
13934
13935         return 0;
13936 out_err:
13937         spin_unlock_bh(&rdev->beacon_registrations_lock);
13938         kfree(nreg);
13939         return rv;
13940 }
13941
13942 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13943 {
13944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13945         struct wireless_dev *wdev = info->user_ptr[1];
13946         int err;
13947
13948         if (!rdev->ops->start_p2p_device)
13949                 return -EOPNOTSUPP;
13950
13951         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13952                 return -EOPNOTSUPP;
13953
13954         if (wdev_running(wdev))
13955                 return 0;
13956
13957         if (rfkill_blocked(rdev->wiphy.rfkill))
13958                 return -ERFKILL;
13959
13960         err = rdev_start_p2p_device(rdev, wdev);
13961         if (err)
13962                 return err;
13963
13964         wdev->is_running = true;
13965         rdev->opencount++;
13966
13967         return 0;
13968 }
13969
13970 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13971 {
13972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13973         struct wireless_dev *wdev = info->user_ptr[1];
13974
13975         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13976                 return -EOPNOTSUPP;
13977
13978         if (!rdev->ops->stop_p2p_device)
13979                 return -EOPNOTSUPP;
13980
13981         cfg80211_stop_p2p_device(rdev, wdev);
13982
13983         return 0;
13984 }
13985
13986 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13987 {
13988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13989         struct wireless_dev *wdev = info->user_ptr[1];
13990         struct cfg80211_nan_conf conf = {};
13991         int err;
13992
13993         if (wdev->iftype != NL80211_IFTYPE_NAN)
13994                 return -EOPNOTSUPP;
13995
13996         if (wdev_running(wdev))
13997                 return -EEXIST;
13998
13999         if (rfkill_blocked(rdev->wiphy.rfkill))
14000                 return -ERFKILL;
14001
14002         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
14003                 return -EINVAL;
14004
14005         conf.master_pref =
14006                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14007
14008         if (info->attrs[NL80211_ATTR_BANDS]) {
14009                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14010
14011                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14012                         return -EOPNOTSUPP;
14013
14014                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14015                         return -EINVAL;
14016
14017                 conf.bands = bands;
14018         }
14019
14020         err = rdev_start_nan(rdev, wdev, &conf);
14021         if (err)
14022                 return err;
14023
14024         wdev->is_running = true;
14025         rdev->opencount++;
14026
14027         return 0;
14028 }
14029
14030 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
14031 {
14032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14033         struct wireless_dev *wdev = info->user_ptr[1];
14034
14035         if (wdev->iftype != NL80211_IFTYPE_NAN)
14036                 return -EOPNOTSUPP;
14037
14038         cfg80211_stop_nan(rdev, wdev);
14039
14040         return 0;
14041 }
14042
14043 static int validate_nan_filter(struct nlattr *filter_attr)
14044 {
14045         struct nlattr *attr;
14046         int len = 0, n_entries = 0, rem;
14047
14048         nla_for_each_nested(attr, filter_attr, rem) {
14049                 len += nla_len(attr);
14050                 n_entries++;
14051         }
14052
14053         if (len >= U8_MAX)
14054                 return -EINVAL;
14055
14056         return n_entries;
14057 }
14058
14059 static int handle_nan_filter(struct nlattr *attr_filter,
14060                              struct cfg80211_nan_func *func,
14061                              bool tx)
14062 {
14063         struct nlattr *attr;
14064         int n_entries, rem, i;
14065         struct cfg80211_nan_func_filter *filter;
14066
14067         n_entries = validate_nan_filter(attr_filter);
14068         if (n_entries < 0)
14069                 return n_entries;
14070
14071         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
14072
14073         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
14074         if (!filter)
14075                 return -ENOMEM;
14076
14077         i = 0;
14078         nla_for_each_nested(attr, attr_filter, rem) {
14079                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
14080                 if (!filter[i].filter)
14081                         goto err;
14082
14083                 filter[i].len = nla_len(attr);
14084                 i++;
14085         }
14086         if (tx) {
14087                 func->num_tx_filters = n_entries;
14088                 func->tx_filters = filter;
14089         } else {
14090                 func->num_rx_filters = n_entries;
14091                 func->rx_filters = filter;
14092         }
14093
14094         return 0;
14095
14096 err:
14097         i = 0;
14098         nla_for_each_nested(attr, attr_filter, rem) {
14099                 kfree(filter[i].filter);
14100                 i++;
14101         }
14102         kfree(filter);
14103         return -ENOMEM;
14104 }
14105
14106 static int nl80211_nan_add_func(struct sk_buff *skb,
14107                                 struct genl_info *info)
14108 {
14109         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14110         struct wireless_dev *wdev = info->user_ptr[1];
14111         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
14112         struct cfg80211_nan_func *func;
14113         struct sk_buff *msg = NULL;
14114         void *hdr = NULL;
14115         int err = 0;
14116
14117         if (wdev->iftype != NL80211_IFTYPE_NAN)
14118                 return -EOPNOTSUPP;
14119
14120         if (!wdev_running(wdev))
14121                 return -ENOTCONN;
14122
14123         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
14124                 return -EINVAL;
14125
14126         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
14127                                           info->attrs[NL80211_ATTR_NAN_FUNC],
14128                                           nl80211_nan_func_policy,
14129                                           info->extack);
14130         if (err)
14131                 return err;
14132
14133         func = kzalloc(sizeof(*func), GFP_KERNEL);
14134         if (!func)
14135                 return -ENOMEM;
14136
14137         func->cookie = cfg80211_assign_cookie(rdev);
14138
14139         if (!tb[NL80211_NAN_FUNC_TYPE]) {
14140                 err = -EINVAL;
14141                 goto out;
14142         }
14143
14144
14145         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
14146
14147         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
14148                 err = -EINVAL;
14149                 goto out;
14150         }
14151
14152         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
14153                sizeof(func->service_id));
14154
14155         func->close_range =
14156                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
14157
14158         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
14159                 func->serv_spec_info_len =
14160                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
14161                 func->serv_spec_info =
14162                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
14163                                 func->serv_spec_info_len,
14164                                 GFP_KERNEL);
14165                 if (!func->serv_spec_info) {
14166                         err = -ENOMEM;
14167                         goto out;
14168                 }
14169         }
14170
14171         if (tb[NL80211_NAN_FUNC_TTL])
14172                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
14173
14174         switch (func->type) {
14175         case NL80211_NAN_FUNC_PUBLISH:
14176                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
14177                         err = -EINVAL;
14178                         goto out;
14179                 }
14180
14181                 func->publish_type =
14182                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
14183                 func->publish_bcast =
14184                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
14185
14186                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
14187                         func->publish_bcast) {
14188                         err = -EINVAL;
14189                         goto out;
14190                 }
14191                 break;
14192         case NL80211_NAN_FUNC_SUBSCRIBE:
14193                 func->subscribe_active =
14194                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
14195                 break;
14196         case NL80211_NAN_FUNC_FOLLOW_UP:
14197                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
14198                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
14199                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
14200                         err = -EINVAL;
14201                         goto out;
14202                 }
14203
14204                 func->followup_id =
14205                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
14206                 func->followup_reqid =
14207                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
14208                 memcpy(func->followup_dest.addr,
14209                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
14210                        sizeof(func->followup_dest.addr));
14211                 if (func->ttl) {
14212                         err = -EINVAL;
14213                         goto out;
14214                 }
14215                 break;
14216         default:
14217                 err = -EINVAL;
14218                 goto out;
14219         }
14220
14221         if (tb[NL80211_NAN_FUNC_SRF]) {
14222                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
14223
14224                 err = nla_parse_nested_deprecated(srf_tb,
14225                                                   NL80211_NAN_SRF_ATTR_MAX,
14226                                                   tb[NL80211_NAN_FUNC_SRF],
14227                                                   nl80211_nan_srf_policy,
14228                                                   info->extack);
14229                 if (err)
14230                         goto out;
14231
14232                 func->srf_include =
14233                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
14234
14235                 if (srf_tb[NL80211_NAN_SRF_BF]) {
14236                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
14237                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
14238                                 err = -EINVAL;
14239                                 goto out;
14240                         }
14241
14242                         func->srf_bf_len =
14243                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
14244                         func->srf_bf =
14245                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
14246                                         func->srf_bf_len, GFP_KERNEL);
14247                         if (!func->srf_bf) {
14248                                 err = -ENOMEM;
14249                                 goto out;
14250                         }
14251
14252                         func->srf_bf_idx =
14253                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
14254                 } else {
14255                         struct nlattr *attr, *mac_attr =
14256                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
14257                         int n_entries, rem, i = 0;
14258
14259                         if (!mac_attr) {
14260                                 err = -EINVAL;
14261                                 goto out;
14262                         }
14263
14264                         n_entries = validate_acl_mac_addrs(mac_attr);
14265                         if (n_entries <= 0) {
14266                                 err = -EINVAL;
14267                                 goto out;
14268                         }
14269
14270                         func->srf_num_macs = n_entries;
14271                         func->srf_macs =
14272                                 kcalloc(n_entries, sizeof(*func->srf_macs),
14273                                         GFP_KERNEL);
14274                         if (!func->srf_macs) {
14275                                 err = -ENOMEM;
14276                                 goto out;
14277                         }
14278
14279                         nla_for_each_nested(attr, mac_attr, rem)
14280                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
14281                                        sizeof(*func->srf_macs));
14282                 }
14283         }
14284
14285         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
14286                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
14287                                         func, true);
14288                 if (err)
14289                         goto out;
14290         }
14291
14292         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
14293                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
14294                                         func, false);
14295                 if (err)
14296                         goto out;
14297         }
14298
14299         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14300         if (!msg) {
14301                 err = -ENOMEM;
14302                 goto out;
14303         }
14304
14305         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14306                              NL80211_CMD_ADD_NAN_FUNCTION);
14307         /* This can't really happen - we just allocated 4KB */
14308         if (WARN_ON(!hdr)) {
14309                 err = -ENOMEM;
14310                 goto out;
14311         }
14312
14313         err = rdev_add_nan_func(rdev, wdev, func);
14314 out:
14315         if (err < 0) {
14316                 cfg80211_free_nan_func(func);
14317                 nlmsg_free(msg);
14318                 return err;
14319         }
14320
14321         /* propagate the instance id and cookie to userspace  */
14322         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
14323                               NL80211_ATTR_PAD))
14324                 goto nla_put_failure;
14325
14326         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14327         if (!func_attr)
14328                 goto nla_put_failure;
14329
14330         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
14331                        func->instance_id))
14332                 goto nla_put_failure;
14333
14334         nla_nest_end(msg, func_attr);
14335
14336         genlmsg_end(msg, hdr);
14337         return genlmsg_reply(msg, info);
14338
14339 nla_put_failure:
14340         nlmsg_free(msg);
14341         return -ENOBUFS;
14342 }
14343
14344 static int nl80211_nan_del_func(struct sk_buff *skb,
14345                                struct genl_info *info)
14346 {
14347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14348         struct wireless_dev *wdev = info->user_ptr[1];
14349         u64 cookie;
14350
14351         if (wdev->iftype != NL80211_IFTYPE_NAN)
14352                 return -EOPNOTSUPP;
14353
14354         if (!wdev_running(wdev))
14355                 return -ENOTCONN;
14356
14357         if (!info->attrs[NL80211_ATTR_COOKIE])
14358                 return -EINVAL;
14359
14360         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
14361
14362         rdev_del_nan_func(rdev, wdev, cookie);
14363
14364         return 0;
14365 }
14366
14367 static int nl80211_nan_change_config(struct sk_buff *skb,
14368                                      struct genl_info *info)
14369 {
14370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14371         struct wireless_dev *wdev = info->user_ptr[1];
14372         struct cfg80211_nan_conf conf = {};
14373         u32 changed = 0;
14374
14375         if (wdev->iftype != NL80211_IFTYPE_NAN)
14376                 return -EOPNOTSUPP;
14377
14378         if (!wdev_running(wdev))
14379                 return -ENOTCONN;
14380
14381         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
14382                 conf.master_pref =
14383                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
14384                 if (conf.master_pref <= 1 || conf.master_pref == 255)
14385                         return -EINVAL;
14386
14387                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
14388         }
14389
14390         if (info->attrs[NL80211_ATTR_BANDS]) {
14391                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
14392
14393                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
14394                         return -EOPNOTSUPP;
14395
14396                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
14397                         return -EINVAL;
14398
14399                 conf.bands = bands;
14400                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
14401         }
14402
14403         if (!changed)
14404                 return -EINVAL;
14405
14406         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
14407 }
14408
14409 void cfg80211_nan_match(struct wireless_dev *wdev,
14410                         struct cfg80211_nan_match_params *match, gfp_t gfp)
14411 {
14412         struct wiphy *wiphy = wdev->wiphy;
14413         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14414         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
14415         struct sk_buff *msg;
14416         void *hdr;
14417
14418         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
14419                 return;
14420
14421         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14422         if (!msg)
14423                 return;
14424
14425         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
14426         if (!hdr) {
14427                 nlmsg_free(msg);
14428                 return;
14429         }
14430
14431         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14432             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14433                                          wdev->netdev->ifindex)) ||
14434             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14435                               NL80211_ATTR_PAD))
14436                 goto nla_put_failure;
14437
14438         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
14439                               NL80211_ATTR_PAD) ||
14440             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
14441                 goto nla_put_failure;
14442
14443         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
14444         if (!match_attr)
14445                 goto nla_put_failure;
14446
14447         local_func_attr = nla_nest_start_noflag(msg,
14448                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
14449         if (!local_func_attr)
14450                 goto nla_put_failure;
14451
14452         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
14453                 goto nla_put_failure;
14454
14455         nla_nest_end(msg, local_func_attr);
14456
14457         peer_func_attr = nla_nest_start_noflag(msg,
14458                                                NL80211_NAN_MATCH_FUNC_PEER);
14459         if (!peer_func_attr)
14460                 goto nla_put_failure;
14461
14462         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
14463             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
14464                 goto nla_put_failure;
14465
14466         if (match->info && match->info_len &&
14467             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
14468                     match->info))
14469                 goto nla_put_failure;
14470
14471         nla_nest_end(msg, peer_func_attr);
14472         nla_nest_end(msg, match_attr);
14473         genlmsg_end(msg, hdr);
14474
14475         if (!wdev->owner_nlportid)
14476                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14477                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14478         else
14479                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14480                                 wdev->owner_nlportid);
14481
14482         return;
14483
14484 nla_put_failure:
14485         nlmsg_free(msg);
14486 }
14487 EXPORT_SYMBOL(cfg80211_nan_match);
14488
14489 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
14490                                   u8 inst_id,
14491                                   enum nl80211_nan_func_term_reason reason,
14492                                   u64 cookie, gfp_t gfp)
14493 {
14494         struct wiphy *wiphy = wdev->wiphy;
14495         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14496         struct sk_buff *msg;
14497         struct nlattr *func_attr;
14498         void *hdr;
14499
14500         if (WARN_ON(!inst_id))
14501                 return;
14502
14503         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
14504         if (!msg)
14505                 return;
14506
14507         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
14508         if (!hdr) {
14509                 nlmsg_free(msg);
14510                 return;
14511         }
14512
14513         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14514             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14515                                          wdev->netdev->ifindex)) ||
14516             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14517                               NL80211_ATTR_PAD))
14518                 goto nla_put_failure;
14519
14520         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
14521                               NL80211_ATTR_PAD))
14522                 goto nla_put_failure;
14523
14524         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
14525         if (!func_attr)
14526                 goto nla_put_failure;
14527
14528         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
14529             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
14530                 goto nla_put_failure;
14531
14532         nla_nest_end(msg, func_attr);
14533         genlmsg_end(msg, hdr);
14534
14535         if (!wdev->owner_nlportid)
14536                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
14537                                         msg, 0, NL80211_MCGRP_NAN, gfp);
14538         else
14539                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
14540                                 wdev->owner_nlportid);
14541
14542         return;
14543
14544 nla_put_failure:
14545         nlmsg_free(msg);
14546 }
14547 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
14548
14549 static int nl80211_get_protocol_features(struct sk_buff *skb,
14550                                          struct genl_info *info)
14551 {
14552         void *hdr;
14553         struct sk_buff *msg;
14554
14555         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14556         if (!msg)
14557                 return -ENOMEM;
14558
14559         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14560                              NL80211_CMD_GET_PROTOCOL_FEATURES);
14561         if (!hdr)
14562                 goto nla_put_failure;
14563
14564         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
14565                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
14566                 goto nla_put_failure;
14567
14568         genlmsg_end(msg, hdr);
14569         return genlmsg_reply(msg, info);
14570
14571  nla_put_failure:
14572         kfree_skb(msg);
14573         return -ENOBUFS;
14574 }
14575
14576 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
14577 {
14578         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14579         struct cfg80211_update_ft_ies_params ft_params;
14580         struct net_device *dev = info->user_ptr[1];
14581
14582         if (!rdev->ops->update_ft_ies)
14583                 return -EOPNOTSUPP;
14584
14585         if (!info->attrs[NL80211_ATTR_MDID] ||
14586             !info->attrs[NL80211_ATTR_IE])
14587                 return -EINVAL;
14588
14589         memset(&ft_params, 0, sizeof(ft_params));
14590         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
14591         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14592         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14593
14594         return rdev_update_ft_ies(rdev, dev, &ft_params);
14595 }
14596
14597 static int nl80211_crit_protocol_start(struct sk_buff *skb,
14598                                        struct genl_info *info)
14599 {
14600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14601         struct wireless_dev *wdev = info->user_ptr[1];
14602         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
14603         u16 duration;
14604         int ret;
14605
14606         if (!rdev->ops->crit_proto_start)
14607                 return -EOPNOTSUPP;
14608
14609         if (WARN_ON(!rdev->ops->crit_proto_stop))
14610                 return -EINVAL;
14611
14612         if (rdev->crit_proto_nlportid)
14613                 return -EBUSY;
14614
14615         /* determine protocol if provided */
14616         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
14617                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
14618
14619         if (proto >= NUM_NL80211_CRIT_PROTO)
14620                 return -EINVAL;
14621
14622         /* timeout must be provided */
14623         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
14624                 return -EINVAL;
14625
14626         duration =
14627                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
14628
14629         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
14630         if (!ret)
14631                 rdev->crit_proto_nlportid = info->snd_portid;
14632
14633         return ret;
14634 }
14635
14636 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
14637                                       struct genl_info *info)
14638 {
14639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14640         struct wireless_dev *wdev = info->user_ptr[1];
14641
14642         if (!rdev->ops->crit_proto_stop)
14643                 return -EOPNOTSUPP;
14644
14645         if (rdev->crit_proto_nlportid) {
14646                 rdev->crit_proto_nlportid = 0;
14647                 rdev_crit_proto_stop(rdev, wdev);
14648         }
14649         return 0;
14650 }
14651
14652 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
14653                                        struct nlattr *attr,
14654                                        struct netlink_ext_ack *extack)
14655 {
14656         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
14657                 if (attr->nla_type & NLA_F_NESTED) {
14658                         NL_SET_ERR_MSG_ATTR(extack, attr,
14659                                             "unexpected nested data");
14660                         return -EINVAL;
14661                 }
14662
14663                 return 0;
14664         }
14665
14666         if (!(attr->nla_type & NLA_F_NESTED)) {
14667                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
14668                 return -EINVAL;
14669         }
14670
14671         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
14672 }
14673
14674 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
14675 {
14676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14677         struct wireless_dev *wdev =
14678                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
14679                                            info->attrs);
14680         int i, err;
14681         u32 vid, subcmd;
14682
14683         if (!rdev->wiphy.vendor_commands)
14684                 return -EOPNOTSUPP;
14685
14686         if (IS_ERR(wdev)) {
14687                 err = PTR_ERR(wdev);
14688                 if (err != -EINVAL)
14689                         return err;
14690                 wdev = NULL;
14691         } else if (wdev->wiphy != &rdev->wiphy) {
14692                 return -EINVAL;
14693         }
14694
14695         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
14696             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
14697                 return -EINVAL;
14698
14699         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
14700         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
14701         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
14702                 const struct wiphy_vendor_command *vcmd;
14703                 void *data = NULL;
14704                 int len = 0;
14705
14706                 vcmd = &rdev->wiphy.vendor_commands[i];
14707
14708                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14709                         continue;
14710
14711                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14712                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14713                         if (!wdev)
14714                                 return -EINVAL;
14715                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14716                             !wdev->netdev)
14717                                 return -EINVAL;
14718
14719                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14720                                 if (!wdev_running(wdev))
14721                                         return -ENETDOWN;
14722                         }
14723                 } else {
14724                         wdev = NULL;
14725                 }
14726
14727                 if (!vcmd->doit)
14728                         return -EOPNOTSUPP;
14729
14730                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
14731                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14732                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
14733
14734                         err = nl80211_vendor_check_policy(vcmd,
14735                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
14736                                         info->extack);
14737                         if (err)
14738                                 return err;
14739                 }
14740
14741                 rdev->cur_cmd_info = info;
14742                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
14743                 rdev->cur_cmd_info = NULL;
14744                 return err;
14745         }
14746
14747         return -EOPNOTSUPP;
14748 }
14749
14750 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
14751                                        struct netlink_callback *cb,
14752                                        struct cfg80211_registered_device **rdev,
14753                                        struct wireless_dev **wdev)
14754 {
14755         struct nlattr **attrbuf;
14756         u32 vid, subcmd;
14757         unsigned int i;
14758         int vcmd_idx = -1;
14759         int err;
14760         void *data = NULL;
14761         unsigned int data_len = 0;
14762
14763         if (cb->args[0]) {
14764                 /* subtract the 1 again here */
14765                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
14766                 struct wireless_dev *tmp;
14767
14768                 if (!wiphy)
14769                         return -ENODEV;
14770                 *rdev = wiphy_to_rdev(wiphy);
14771                 *wdev = NULL;
14772
14773                 if (cb->args[1]) {
14774                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
14775                                 if (tmp->identifier == cb->args[1] - 1) {
14776                                         *wdev = tmp;
14777                                         break;
14778                                 }
14779                         }
14780                 }
14781
14782                 /* keep rtnl locked in successful case */
14783                 return 0;
14784         }
14785
14786         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
14787         if (!attrbuf)
14788                 return -ENOMEM;
14789
14790         err = nlmsg_parse_deprecated(cb->nlh,
14791                                      GENL_HDRLEN + nl80211_fam.hdrsize,
14792                                      attrbuf, nl80211_fam.maxattr,
14793                                      nl80211_policy, NULL);
14794         if (err)
14795                 goto out;
14796
14797         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
14798             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
14799                 err = -EINVAL;
14800                 goto out;
14801         }
14802
14803         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
14804         if (IS_ERR(*wdev))
14805                 *wdev = NULL;
14806
14807         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
14808         if (IS_ERR(*rdev)) {
14809                 err = PTR_ERR(*rdev);
14810                 goto out;
14811         }
14812
14813         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
14814         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
14815
14816         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
14817                 const struct wiphy_vendor_command *vcmd;
14818
14819                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
14820
14821                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
14822                         continue;
14823
14824                 if (!vcmd->dumpit) {
14825                         err = -EOPNOTSUPP;
14826                         goto out;
14827                 }
14828
14829                 vcmd_idx = i;
14830                 break;
14831         }
14832
14833         if (vcmd_idx < 0) {
14834                 err = -EOPNOTSUPP;
14835                 goto out;
14836         }
14837
14838         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
14839                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14840                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
14841
14842                 err = nl80211_vendor_check_policy(
14843                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
14844                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
14845                                 cb->extack);
14846                 if (err)
14847                         goto out;
14848         }
14849
14850         /* 0 is the first index - add 1 to parse only once */
14851         cb->args[0] = (*rdev)->wiphy_idx + 1;
14852         /* add 1 to know if it was NULL */
14853         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
14854         cb->args[2] = vcmd_idx;
14855         cb->args[3] = (unsigned long)data;
14856         cb->args[4] = data_len;
14857
14858         /* keep rtnl locked in successful case */
14859         err = 0;
14860 out:
14861         kfree(attrbuf);
14862         return err;
14863 }
14864
14865 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
14866                                    struct netlink_callback *cb)
14867 {
14868         struct cfg80211_registered_device *rdev;
14869         struct wireless_dev *wdev;
14870         unsigned int vcmd_idx;
14871         const struct wiphy_vendor_command *vcmd;
14872         void *data;
14873         int data_len;
14874         int err;
14875         struct nlattr *vendor_data;
14876
14877         rtnl_lock();
14878         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
14879         if (err)
14880                 goto out;
14881
14882         vcmd_idx = cb->args[2];
14883         data = (void *)cb->args[3];
14884         data_len = cb->args[4];
14885         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
14886
14887         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
14888                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
14889                 if (!wdev) {
14890                         err = -EINVAL;
14891                         goto out;
14892                 }
14893                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
14894                     !wdev->netdev) {
14895                         err = -EINVAL;
14896                         goto out;
14897                 }
14898
14899                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
14900                         if (!wdev_running(wdev)) {
14901                                 err = -ENETDOWN;
14902                                 goto out;
14903                         }
14904                 }
14905         }
14906
14907         while (1) {
14908                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
14909                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
14910                                            NL80211_CMD_VENDOR);
14911                 if (!hdr)
14912                         break;
14913
14914                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14915                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
14916                                                wdev_id(wdev),
14917                                                NL80211_ATTR_PAD))) {
14918                         genlmsg_cancel(skb, hdr);
14919                         break;
14920                 }
14921
14922                 vendor_data = nla_nest_start_noflag(skb,
14923                                                     NL80211_ATTR_VENDOR_DATA);
14924                 if (!vendor_data) {
14925                         genlmsg_cancel(skb, hdr);
14926                         break;
14927                 }
14928
14929                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14930                                    (unsigned long *)&cb->args[5]);
14931                 nla_nest_end(skb, vendor_data);
14932
14933                 if (err == -ENOBUFS || err == -ENOENT) {
14934                         genlmsg_cancel(skb, hdr);
14935                         break;
14936                 } else if (err <= 0) {
14937                         genlmsg_cancel(skb, hdr);
14938                         goto out;
14939                 }
14940
14941                 genlmsg_end(skb, hdr);
14942         }
14943
14944         err = skb->len;
14945  out:
14946         rtnl_unlock();
14947         return err;
14948 }
14949
14950 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14951                                            enum nl80211_commands cmd,
14952                                            enum nl80211_attrs attr,
14953                                            int approxlen)
14954 {
14955         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14956
14957         if (WARN_ON(!rdev->cur_cmd_info))
14958                 return NULL;
14959
14960         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14961                                            rdev->cur_cmd_info->snd_portid,
14962                                            rdev->cur_cmd_info->snd_seq,
14963                                            cmd, attr, NULL, GFP_KERNEL);
14964 }
14965 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14966
14967 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14968 {
14969         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14970         void *hdr = ((void **)skb->cb)[1];
14971         struct nlattr *data = ((void **)skb->cb)[2];
14972
14973         /* clear CB data for netlink core to own from now on */
14974         memset(skb->cb, 0, sizeof(skb->cb));
14975
14976         if (WARN_ON(!rdev->cur_cmd_info)) {
14977                 kfree_skb(skb);
14978                 return -EINVAL;
14979         }
14980
14981         nla_nest_end(skb, data);
14982         genlmsg_end(skb, hdr);
14983         return genlmsg_reply(skb, rdev->cur_cmd_info);
14984 }
14985 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14986
14987 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14988 {
14989         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14990
14991         if (WARN_ON(!rdev->cur_cmd_info))
14992                 return 0;
14993
14994         return rdev->cur_cmd_info->snd_portid;
14995 }
14996 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14997
14998 static int nl80211_set_qos_map(struct sk_buff *skb,
14999                                struct genl_info *info)
15000 {
15001         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15002         struct cfg80211_qos_map *qos_map = NULL;
15003         struct net_device *dev = info->user_ptr[1];
15004         u8 *pos, len, num_des, des_len, des;
15005         int ret;
15006
15007         if (!rdev->ops->set_qos_map)
15008                 return -EOPNOTSUPP;
15009
15010         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
15011                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
15012                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
15013
15014                 if (len % 2)
15015                         return -EINVAL;
15016
15017                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
15018                 if (!qos_map)
15019                         return -ENOMEM;
15020
15021                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
15022                 if (num_des) {
15023                         des_len = num_des *
15024                                 sizeof(struct cfg80211_dscp_exception);
15025                         memcpy(qos_map->dscp_exception, pos, des_len);
15026                         qos_map->num_des = num_des;
15027                         for (des = 0; des < num_des; des++) {
15028                                 if (qos_map->dscp_exception[des].up > 7) {
15029                                         kfree(qos_map);
15030                                         return -EINVAL;
15031                                 }
15032                         }
15033                         pos += des_len;
15034                 }
15035                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
15036         }
15037
15038         wdev_lock(dev->ieee80211_ptr);
15039         ret = nl80211_key_allowed(dev->ieee80211_ptr);
15040         if (!ret)
15041                 ret = rdev_set_qos_map(rdev, dev, qos_map);
15042         wdev_unlock(dev->ieee80211_ptr);
15043
15044         kfree(qos_map);
15045         return ret;
15046 }
15047
15048 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
15049 {
15050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15051         struct net_device *dev = info->user_ptr[1];
15052         struct wireless_dev *wdev = dev->ieee80211_ptr;
15053         const u8 *peer;
15054         u8 tsid, up;
15055         u16 admitted_time = 0;
15056         int err;
15057
15058         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
15059                 return -EOPNOTSUPP;
15060
15061         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
15062             !info->attrs[NL80211_ATTR_USER_PRIO])
15063                 return -EINVAL;
15064
15065         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15066         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
15067
15068         /* WMM uses TIDs 0-7 even for TSPEC */
15069         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
15070                 /* TODO: handle 802.11 TSPEC/admission control
15071                  * need more attributes for that (e.g. BA session requirement);
15072                  * change the WMM adminssion test above to allow both then
15073                  */
15074                 return -EINVAL;
15075         }
15076
15077         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15078
15079         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
15080                 admitted_time =
15081                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
15082                 if (!admitted_time)
15083                         return -EINVAL;
15084         }
15085
15086         wdev_lock(wdev);
15087         switch (wdev->iftype) {
15088         case NL80211_IFTYPE_STATION:
15089         case NL80211_IFTYPE_P2P_CLIENT:
15090                 if (wdev->connected)
15091                         break;
15092                 err = -ENOTCONN;
15093                 goto out;
15094         default:
15095                 err = -EOPNOTSUPP;
15096                 goto out;
15097         }
15098
15099         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
15100
15101  out:
15102         wdev_unlock(wdev);
15103         return err;
15104 }
15105
15106 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
15107 {
15108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15109         struct net_device *dev = info->user_ptr[1];
15110         struct wireless_dev *wdev = dev->ieee80211_ptr;
15111         const u8 *peer;
15112         u8 tsid;
15113         int err;
15114
15115         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
15116                 return -EINVAL;
15117
15118         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
15119         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15120
15121         wdev_lock(wdev);
15122         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
15123         wdev_unlock(wdev);
15124
15125         return err;
15126 }
15127
15128 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
15129                                        struct genl_info *info)
15130 {
15131         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15132         struct net_device *dev = info->user_ptr[1];
15133         struct wireless_dev *wdev = dev->ieee80211_ptr;
15134         struct cfg80211_chan_def chandef = {};
15135         const u8 *addr;
15136         u8 oper_class;
15137         int err;
15138
15139         if (!rdev->ops->tdls_channel_switch ||
15140             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15141                 return -EOPNOTSUPP;
15142
15143         switch (dev->ieee80211_ptr->iftype) {
15144         case NL80211_IFTYPE_STATION:
15145         case NL80211_IFTYPE_P2P_CLIENT:
15146                 break;
15147         default:
15148                 return -EOPNOTSUPP;
15149         }
15150
15151         if (!info->attrs[NL80211_ATTR_MAC] ||
15152             !info->attrs[NL80211_ATTR_OPER_CLASS])
15153                 return -EINVAL;
15154
15155         err = nl80211_parse_chandef(rdev, info, &chandef);
15156         if (err)
15157                 return err;
15158
15159         /*
15160          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
15161          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
15162          * specification is not defined for them.
15163          */
15164         if (chandef.chan->band == NL80211_BAND_2GHZ &&
15165             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
15166             chandef.width != NL80211_CHAN_WIDTH_20)
15167                 return -EINVAL;
15168
15169         /* we will be active on the TDLS link */
15170         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
15171                                            wdev->iftype))
15172                 return -EINVAL;
15173
15174         /* don't allow switching to DFS channels */
15175         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
15176                 return -EINVAL;
15177
15178         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15179         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
15180
15181         wdev_lock(wdev);
15182         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
15183         wdev_unlock(wdev);
15184
15185         return err;
15186 }
15187
15188 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
15189                                               struct genl_info *info)
15190 {
15191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15192         struct net_device *dev = info->user_ptr[1];
15193         struct wireless_dev *wdev = dev->ieee80211_ptr;
15194         const u8 *addr;
15195
15196         if (!rdev->ops->tdls_channel_switch ||
15197             !rdev->ops->tdls_cancel_channel_switch ||
15198             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
15199                 return -EOPNOTSUPP;
15200
15201         switch (dev->ieee80211_ptr->iftype) {
15202         case NL80211_IFTYPE_STATION:
15203         case NL80211_IFTYPE_P2P_CLIENT:
15204                 break;
15205         default:
15206                 return -EOPNOTSUPP;
15207         }
15208
15209         if (!info->attrs[NL80211_ATTR_MAC])
15210                 return -EINVAL;
15211
15212         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15213
15214         wdev_lock(wdev);
15215         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
15216         wdev_unlock(wdev);
15217
15218         return 0;
15219 }
15220
15221 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
15222                                             struct genl_info *info)
15223 {
15224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15225         struct net_device *dev = info->user_ptr[1];
15226         struct wireless_dev *wdev = dev->ieee80211_ptr;
15227         const struct nlattr *nla;
15228         bool enabled;
15229
15230         if (!rdev->ops->set_multicast_to_unicast)
15231                 return -EOPNOTSUPP;
15232
15233         if (wdev->iftype != NL80211_IFTYPE_AP &&
15234             wdev->iftype != NL80211_IFTYPE_P2P_GO)
15235                 return -EOPNOTSUPP;
15236
15237         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
15238         enabled = nla_get_flag(nla);
15239
15240         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
15241 }
15242
15243 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
15244 {
15245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15246         struct net_device *dev = info->user_ptr[1];
15247         struct wireless_dev *wdev = dev->ieee80211_ptr;
15248         struct cfg80211_pmk_conf pmk_conf = {};
15249         int ret;
15250
15251         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15252             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15253                 return -EOPNOTSUPP;
15254
15255         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15256                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15257                 return -EOPNOTSUPP;
15258
15259         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
15260                 return -EINVAL;
15261
15262         wdev_lock(wdev);
15263         if (!wdev->connected) {
15264                 ret = -ENOTCONN;
15265                 goto out;
15266         }
15267
15268         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15269         if (memcmp(pmk_conf.aa, wdev->u.client.connected_addr, ETH_ALEN)) {
15270                 ret = -EINVAL;
15271                 goto out;
15272         }
15273
15274         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
15275         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
15276         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
15277             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
15278                 ret = -EINVAL;
15279                 goto out;
15280         }
15281
15282         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
15283                 pmk_conf.pmk_r0_name =
15284                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
15285
15286         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
15287 out:
15288         wdev_unlock(wdev);
15289         return ret;
15290 }
15291
15292 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
15293 {
15294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15295         struct net_device *dev = info->user_ptr[1];
15296         struct wireless_dev *wdev = dev->ieee80211_ptr;
15297         const u8 *aa;
15298         int ret;
15299
15300         if (wdev->iftype != NL80211_IFTYPE_STATION &&
15301             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
15302                 return -EOPNOTSUPP;
15303
15304         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15305                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
15306                 return -EOPNOTSUPP;
15307
15308         if (!info->attrs[NL80211_ATTR_MAC])
15309                 return -EINVAL;
15310
15311         wdev_lock(wdev);
15312         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
15313         ret = rdev_del_pmk(rdev, dev, aa);
15314         wdev_unlock(wdev);
15315
15316         return ret;
15317 }
15318
15319 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
15320 {
15321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15322         struct net_device *dev = info->user_ptr[1];
15323         struct cfg80211_external_auth_params params;
15324
15325         if (!rdev->ops->external_auth)
15326                 return -EOPNOTSUPP;
15327
15328         if (!info->attrs[NL80211_ATTR_SSID] &&
15329             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
15330             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
15331                 return -EINVAL;
15332
15333         if (!info->attrs[NL80211_ATTR_BSSID])
15334                 return -EINVAL;
15335
15336         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
15337                 return -EINVAL;
15338
15339         memset(&params, 0, sizeof(params));
15340
15341         if (info->attrs[NL80211_ATTR_SSID]) {
15342                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
15343                 if (params.ssid.ssid_len == 0)
15344                         return -EINVAL;
15345                 memcpy(params.ssid.ssid,
15346                        nla_data(info->attrs[NL80211_ATTR_SSID]),
15347                        params.ssid.ssid_len);
15348         }
15349
15350         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
15351                ETH_ALEN);
15352
15353         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15354
15355         if (info->attrs[NL80211_ATTR_PMKID])
15356                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
15357
15358         return rdev_external_auth(rdev, dev, &params);
15359 }
15360
15361 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
15362 {
15363         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
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 *buf;
15368         size_t len;
15369         u8 *dest;
15370         u16 proto;
15371         bool noencrypt;
15372         u64 cookie = 0;
15373         int link_id;
15374         int err;
15375
15376         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15377                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
15378                 return -EOPNOTSUPP;
15379
15380         if (!rdev->ops->tx_control_port)
15381                 return -EOPNOTSUPP;
15382
15383         if (!info->attrs[NL80211_ATTR_FRAME] ||
15384             !info->attrs[NL80211_ATTR_MAC] ||
15385             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
15386                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
15387                 return -EINVAL;
15388         }
15389
15390         wdev_lock(wdev);
15391
15392         switch (wdev->iftype) {
15393         case NL80211_IFTYPE_AP:
15394         case NL80211_IFTYPE_P2P_GO:
15395         case NL80211_IFTYPE_MESH_POINT:
15396                 break;
15397         case NL80211_IFTYPE_ADHOC:
15398                 if (wdev->u.ibss.current_bss)
15399                         break;
15400                 err = -ENOTCONN;
15401                 goto out;
15402         case NL80211_IFTYPE_STATION:
15403         case NL80211_IFTYPE_P2P_CLIENT:
15404                 if (wdev->connected)
15405                         break;
15406                 err = -ENOTCONN;
15407                 goto out;
15408         default:
15409                 err = -EOPNOTSUPP;
15410                 goto out;
15411         }
15412
15413         wdev_unlock(wdev);
15414
15415         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15416         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15417         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15418         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
15419         noencrypt =
15420                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
15421
15422         link_id = nl80211_link_id_or_invalid(info->attrs);
15423
15424         err = rdev_tx_control_port(rdev, dev, buf, len,
15425                                    dest, cpu_to_be16(proto), noencrypt, link_id,
15426                                    dont_wait_for_ack ? NULL : &cookie);
15427         if (!err && !dont_wait_for_ack)
15428                 nl_set_extack_cookie_u64(info->extack, cookie);
15429         return err;
15430  out:
15431         wdev_unlock(wdev);
15432         return err;
15433 }
15434
15435 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
15436                                            struct genl_info *info)
15437 {
15438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15439         struct net_device *dev = info->user_ptr[1];
15440         struct wireless_dev *wdev = dev->ieee80211_ptr;
15441         struct cfg80211_ftm_responder_stats ftm_stats = {};
15442         unsigned int link_id = nl80211_link_id(info->attrs);
15443         struct sk_buff *msg;
15444         void *hdr;
15445         struct nlattr *ftm_stats_attr;
15446         int err;
15447
15448         if (wdev->iftype != NL80211_IFTYPE_AP ||
15449             !wdev->links[link_id].ap.beacon_interval)
15450                 return -EOPNOTSUPP;
15451
15452         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
15453         if (err)
15454                 return err;
15455
15456         if (!ftm_stats.filled)
15457                 return -ENODATA;
15458
15459         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15460         if (!msg)
15461                 return -ENOMEM;
15462
15463         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
15464                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
15465         if (!hdr)
15466                 goto nla_put_failure;
15467
15468         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15469                 goto nla_put_failure;
15470
15471         ftm_stats_attr = nla_nest_start_noflag(msg,
15472                                                NL80211_ATTR_FTM_RESPONDER_STATS);
15473         if (!ftm_stats_attr)
15474                 goto nla_put_failure;
15475
15476 #define SET_FTM(field, name, type)                                       \
15477         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15478             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
15479                              ftm_stats.field))                           \
15480                 goto nla_put_failure; } while (0)
15481 #define SET_FTM_U64(field, name)                                         \
15482         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
15483             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
15484                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
15485                 goto nla_put_failure; } while (0)
15486
15487         SET_FTM(success_num, SUCCESS_NUM, u32);
15488         SET_FTM(partial_num, PARTIAL_NUM, u32);
15489         SET_FTM(failed_num, FAILED_NUM, u32);
15490         SET_FTM(asap_num, ASAP_NUM, u32);
15491         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
15492         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
15493         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
15494         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
15495         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
15496 #undef SET_FTM
15497
15498         nla_nest_end(msg, ftm_stats_attr);
15499
15500         genlmsg_end(msg, hdr);
15501         return genlmsg_reply(msg, info);
15502
15503 nla_put_failure:
15504         nlmsg_free(msg);
15505         return -ENOBUFS;
15506 }
15507
15508 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
15509 {
15510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15511         struct cfg80211_update_owe_info owe_info;
15512         struct net_device *dev = info->user_ptr[1];
15513
15514         if (!rdev->ops->update_owe_info)
15515                 return -EOPNOTSUPP;
15516
15517         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
15518             !info->attrs[NL80211_ATTR_MAC])
15519                 return -EINVAL;
15520
15521         memset(&owe_info, 0, sizeof(owe_info));
15522         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
15523         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
15524
15525         if (info->attrs[NL80211_ATTR_IE]) {
15526                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
15527                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
15528         }
15529
15530         return rdev_update_owe_info(rdev, dev, &owe_info);
15531 }
15532
15533 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
15534 {
15535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15536         struct net_device *dev = info->user_ptr[1];
15537         struct wireless_dev *wdev = dev->ieee80211_ptr;
15538         struct station_info sinfo = {};
15539         const u8 *buf;
15540         size_t len;
15541         u8 *dest;
15542         int err;
15543
15544         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
15545                 return -EOPNOTSUPP;
15546
15547         if (!info->attrs[NL80211_ATTR_MAC] ||
15548             !info->attrs[NL80211_ATTR_FRAME]) {
15549                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
15550                 return -EINVAL;
15551         }
15552
15553         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
15554                 return -EOPNOTSUPP;
15555
15556         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
15557         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
15558         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
15559
15560         if (len < sizeof(struct ethhdr))
15561                 return -EINVAL;
15562
15563         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
15564             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
15565                 return -EINVAL;
15566
15567         err = rdev_get_station(rdev, dev, dest, &sinfo);
15568         if (err)
15569                 return err;
15570
15571         cfg80211_sinfo_release_content(&sinfo);
15572
15573         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
15574 }
15575
15576 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
15577                           struct nlattr *attrs[], struct net_device *dev,
15578                           struct cfg80211_tid_cfg *tid_conf,
15579                           struct genl_info *info, const u8 *peer,
15580                           unsigned int link_id)
15581 {
15582         struct netlink_ext_ack *extack = info->extack;
15583         u64 mask;
15584         int err;
15585
15586         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
15587                 return -EINVAL;
15588
15589         tid_conf->config_override =
15590                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
15591         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
15592
15593         if (tid_conf->config_override) {
15594                 if (rdev->ops->reset_tid_config) {
15595                         err = rdev_reset_tid_config(rdev, dev, peer,
15596                                                     tid_conf->tids);
15597                         if (err)
15598                                 return err;
15599                 } else {
15600                         return -EINVAL;
15601                 }
15602         }
15603
15604         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
15605                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
15606                 tid_conf->noack =
15607                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
15608         }
15609
15610         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
15611                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
15612                 tid_conf->retry_short =
15613                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
15614
15615                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
15616                         return -EINVAL;
15617         }
15618
15619         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
15620                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
15621                 tid_conf->retry_long =
15622                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
15623
15624                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
15625                         return -EINVAL;
15626         }
15627
15628         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
15629                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
15630                 tid_conf->ampdu =
15631                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
15632         }
15633
15634         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
15635                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
15636                 tid_conf->rtscts =
15637                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
15638         }
15639
15640         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
15641                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
15642                 tid_conf->amsdu =
15643                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
15644         }
15645
15646         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
15647                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
15648
15649                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
15650
15651                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
15652                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
15653                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
15654                                                     &tid_conf->txrate_mask, dev,
15655                                                     true, link_id);
15656                         if (err)
15657                                 return err;
15658
15659                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
15660                 }
15661                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
15662         }
15663
15664         if (peer)
15665                 mask = rdev->wiphy.tid_config_support.peer;
15666         else
15667                 mask = rdev->wiphy.tid_config_support.vif;
15668
15669         if (tid_conf->mask & ~mask) {
15670                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
15671                 return -ENOTSUPP;
15672         }
15673
15674         return 0;
15675 }
15676
15677 static int nl80211_set_tid_config(struct sk_buff *skb,
15678                                   struct genl_info *info)
15679 {
15680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15681         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
15682         unsigned int link_id = nl80211_link_id(info->attrs);
15683         struct net_device *dev = info->user_ptr[1];
15684         struct cfg80211_tid_config *tid_config;
15685         struct nlattr *tid;
15686         int conf_idx = 0, rem_conf;
15687         int ret = -EINVAL;
15688         u32 num_conf = 0;
15689
15690         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
15691                 return -EINVAL;
15692
15693         if (!rdev->ops->set_tid_config)
15694                 return -EOPNOTSUPP;
15695
15696         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15697                             rem_conf)
15698                 num_conf++;
15699
15700         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
15701                              GFP_KERNEL);
15702         if (!tid_config)
15703                 return -ENOMEM;
15704
15705         tid_config->n_tid_conf = num_conf;
15706
15707         if (info->attrs[NL80211_ATTR_MAC])
15708                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
15709
15710         wdev_lock(dev->ieee80211_ptr);
15711
15712         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
15713                             rem_conf) {
15714                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
15715                                        tid, NULL, NULL);
15716
15717                 if (ret)
15718                         goto bad_tid_conf;
15719
15720                 ret = parse_tid_conf(rdev, attrs, dev,
15721                                      &tid_config->tid_conf[conf_idx],
15722                                      info, tid_config->peer, link_id);
15723                 if (ret)
15724                         goto bad_tid_conf;
15725
15726                 conf_idx++;
15727         }
15728
15729         ret = rdev_set_tid_config(rdev, dev, tid_config);
15730
15731 bad_tid_conf:
15732         kfree(tid_config);
15733         wdev_unlock(dev->ieee80211_ptr);
15734         return ret;
15735 }
15736
15737 static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
15738 {
15739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15740         struct cfg80211_color_change_settings params = {};
15741         struct net_device *dev = info->user_ptr[1];
15742         struct wireless_dev *wdev = dev->ieee80211_ptr;
15743         struct nlattr **tb;
15744         u16 offset;
15745         int err;
15746
15747         if (!rdev->ops->color_change)
15748                 return -EOPNOTSUPP;
15749
15750         if (!wiphy_ext_feature_isset(&rdev->wiphy,
15751                                      NL80211_EXT_FEATURE_BSS_COLOR))
15752                 return -EOPNOTSUPP;
15753
15754         if (wdev->iftype != NL80211_IFTYPE_AP)
15755                 return -EOPNOTSUPP;
15756
15757         if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
15758             !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
15759             !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
15760                 return -EINVAL;
15761
15762         params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
15763         params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
15764
15765         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_next);
15766         if (err)
15767                 return err;
15768
15769         tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
15770         if (!tb)
15771                 return -ENOMEM;
15772
15773         err = nla_parse_nested(tb, NL80211_ATTR_MAX,
15774                                info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
15775                                nl80211_policy, info->extack);
15776         if (err)
15777                 goto out;
15778
15779         err = nl80211_parse_beacon(rdev, tb, &params.beacon_color_change);
15780         if (err)
15781                 goto out;
15782
15783         if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
15784                 err = -EINVAL;
15785                 goto out;
15786         }
15787
15788         if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
15789                 err = -EINVAL;
15790                 goto out;
15791         }
15792
15793         offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
15794         if (offset >= params.beacon_color_change.tail_len) {
15795                 err = -EINVAL;
15796                 goto out;
15797         }
15798
15799         if (params.beacon_color_change.tail[offset] != params.count) {
15800                 err = -EINVAL;
15801                 goto out;
15802         }
15803
15804         params.counter_offset_beacon = offset;
15805
15806         if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
15807                 if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
15808                     sizeof(u16)) {
15809                         err = -EINVAL;
15810                         goto out;
15811                 }
15812
15813                 offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
15814                 if (offset >= params.beacon_color_change.probe_resp_len) {
15815                         err = -EINVAL;
15816                         goto out;
15817                 }
15818
15819                 if (params.beacon_color_change.probe_resp[offset] !=
15820                     params.count) {
15821                         err = -EINVAL;
15822                         goto out;
15823                 }
15824
15825                 params.counter_offset_presp = offset;
15826         }
15827
15828         wdev_lock(wdev);
15829         err = rdev_color_change(rdev, dev, &params);
15830         wdev_unlock(wdev);
15831
15832 out:
15833         kfree(params.beacon_next.mbssid_ies);
15834         kfree(params.beacon_color_change.mbssid_ies);
15835         kfree(tb);
15836         return err;
15837 }
15838
15839 static int nl80211_set_fils_aad(struct sk_buff *skb,
15840                                 struct genl_info *info)
15841 {
15842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15843         struct net_device *dev = info->user_ptr[1];
15844         struct cfg80211_fils_aad fils_aad = {};
15845         u8 *nonces;
15846
15847         if (!info->attrs[NL80211_ATTR_MAC] ||
15848             !info->attrs[NL80211_ATTR_FILS_KEK] ||
15849             !info->attrs[NL80211_ATTR_FILS_NONCES])
15850                 return -EINVAL;
15851
15852         fils_aad.macaddr = nla_data(info->attrs[NL80211_ATTR_MAC]);
15853         fils_aad.kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
15854         fils_aad.kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
15855         nonces = nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
15856         fils_aad.snonce = nonces;
15857         fils_aad.anonce = nonces + FILS_NONCE_LEN;
15858
15859         return rdev_set_fils_aad(rdev, dev, &fils_aad);
15860 }
15861
15862 static int nl80211_add_link(struct sk_buff *skb, struct genl_info *info)
15863 {
15864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15865         unsigned int link_id = nl80211_link_id(info->attrs);
15866         struct net_device *dev = info->user_ptr[1];
15867         struct wireless_dev *wdev = dev->ieee80211_ptr;
15868         int ret;
15869
15870         if (!(wdev->wiphy->flags & WIPHY_FLAG_SUPPORTS_MLO))
15871                 return -EINVAL;
15872
15873         switch (wdev->iftype) {
15874         case NL80211_IFTYPE_AP:
15875                 break;
15876         default:
15877                 return -EINVAL;
15878         }
15879
15880         if (!info->attrs[NL80211_ATTR_MAC] ||
15881             !is_valid_ether_addr(nla_data(info->attrs[NL80211_ATTR_MAC])))
15882                 return -EINVAL;
15883
15884         wdev_lock(wdev);
15885         wdev->valid_links |= BIT(link_id);
15886         ether_addr_copy(wdev->links[link_id].addr,
15887                         nla_data(info->attrs[NL80211_ATTR_MAC]));
15888
15889         ret = rdev_add_intf_link(rdev, wdev, link_id);
15890         if (ret) {
15891                 wdev->valid_links &= ~BIT(link_id);
15892                 eth_zero_addr(wdev->links[link_id].addr);
15893         }
15894         wdev_unlock(wdev);
15895
15896         return ret;
15897 }
15898
15899 static int nl80211_remove_link(struct sk_buff *skb, struct genl_info *info)
15900 {
15901         unsigned int link_id = nl80211_link_id(info->attrs);
15902         struct net_device *dev = info->user_ptr[1];
15903         struct wireless_dev *wdev = dev->ieee80211_ptr;
15904
15905         /* cannot remove if there's no link */
15906         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15907                 return -EINVAL;
15908
15909         switch (wdev->iftype) {
15910         case NL80211_IFTYPE_AP:
15911                 break;
15912         default:
15913                 return -EINVAL;
15914         }
15915
15916         wdev_lock(wdev);
15917         cfg80211_remove_link(wdev, link_id);
15918         wdev_unlock(wdev);
15919
15920         return 0;
15921 }
15922
15923 static int
15924 nl80211_add_mod_link_station(struct sk_buff *skb, struct genl_info *info,
15925                              bool add)
15926 {
15927         struct link_station_parameters params = {};
15928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
15929         struct net_device *dev = info->user_ptr[1];
15930         int err;
15931
15932         if ((add && !rdev->ops->add_link_station) ||
15933             (!add && !rdev->ops->mod_link_station))
15934                 return -EOPNOTSUPP;
15935
15936         if (add && !info->attrs[NL80211_ATTR_MAC])
15937                 return -EINVAL;
15938
15939         if (!info->attrs[NL80211_ATTR_MLD_ADDR])
15940                 return -EINVAL;
15941
15942         if (add && !info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
15943                 return -EINVAL;
15944
15945         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
15946
15947         if (info->attrs[NL80211_ATTR_MAC]) {
15948                 params.link_mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
15949                 if (!is_valid_ether_addr(params.link_mac))
15950                         return -EINVAL;
15951         }
15952
15953         if (!info->attrs[NL80211_ATTR_MLO_LINK_ID])
15954                 return -EINVAL;
15955
15956         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
15957
15958         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
15959                 params.supported_rates =
15960                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15961                 params.supported_rates_len =
15962                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
15963         }
15964
15965         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
15966                 params.ht_capa =
15967                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
15968
15969         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
15970                 params.vht_capa =
15971                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
15972
15973         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
15974                 params.he_capa =
15975                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15976                 params.he_capa_len =
15977                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
15978
15979                 if (info->attrs[NL80211_ATTR_EHT_CAPABILITY]) {
15980                         params.eht_capa =
15981                                 nla_data(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15982                         params.eht_capa_len =
15983                                 nla_len(info->attrs[NL80211_ATTR_EHT_CAPABILITY]);
15984
15985                         if (!ieee80211_eht_capa_size_ok((const u8 *)params.he_capa,
15986                                                         (const u8 *)params.eht_capa,
15987                                                         params.eht_capa_len,
15988                                                         false))
15989                                 return -EINVAL;
15990                 }
15991         }
15992
15993         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
15994                 params.he_6ghz_capa =
15995                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
15996
15997         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
15998                 params.opmode_notif_used = true;
15999                 params.opmode_notif =
16000                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
16001         }
16002
16003         err = nl80211_parse_sta_txpower_setting(info, &params.txpwr,
16004                                                 &params.txpwr_set);
16005         if (err)
16006                 return err;
16007
16008         wdev_lock(dev->ieee80211_ptr);
16009         if (add)
16010                 err = rdev_add_link_station(rdev, dev, &params);
16011         else
16012                 err = rdev_mod_link_station(rdev, dev, &params);
16013         wdev_unlock(dev->ieee80211_ptr);
16014
16015         return err;
16016 }
16017
16018 static int
16019 nl80211_add_link_station(struct sk_buff *skb, struct genl_info *info)
16020 {
16021         return nl80211_add_mod_link_station(skb, info, true);
16022 }
16023
16024 static int
16025 nl80211_modify_link_station(struct sk_buff *skb, struct genl_info *info)
16026 {
16027         return nl80211_add_mod_link_station(skb, info, false);
16028 }
16029
16030 static int
16031 nl80211_remove_link_station(struct sk_buff *skb, struct genl_info *info)
16032 {
16033         struct link_station_del_parameters params = {};
16034         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16035         struct net_device *dev = info->user_ptr[1];
16036         int ret;
16037
16038         if (!rdev->ops->del_link_station)
16039                 return -EOPNOTSUPP;
16040
16041         if (!info->attrs[NL80211_ATTR_MLD_ADDR] ||
16042             !info->attrs[NL80211_ATTR_MLO_LINK_ID])
16043                 return -EINVAL;
16044
16045         params.mld_mac = nla_data(info->attrs[NL80211_ATTR_MLD_ADDR]);
16046         params.link_id = nla_get_u8(info->attrs[NL80211_ATTR_MLO_LINK_ID]);
16047
16048         wdev_lock(dev->ieee80211_ptr);
16049         ret = rdev_del_link_station(rdev, dev, &params);
16050         wdev_unlock(dev->ieee80211_ptr);
16051
16052         return ret;
16053 }
16054
16055 #define NL80211_FLAG_NEED_WIPHY         0x01
16056 #define NL80211_FLAG_NEED_NETDEV        0x02
16057 #define NL80211_FLAG_NEED_RTNL          0x04
16058 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
16059 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
16060                                          NL80211_FLAG_CHECK_NETDEV_UP)
16061 #define NL80211_FLAG_NEED_WDEV          0x10
16062 /* If a netdev is associated, it must be UP, P2P must be started */
16063 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
16064                                          NL80211_FLAG_CHECK_NETDEV_UP)
16065 #define NL80211_FLAG_CLEAR_SKB          0x20
16066 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
16067 #define NL80211_FLAG_MLO_VALID_LINK_ID  0x80
16068 #define NL80211_FLAG_MLO_UNSUPPORTED    0x100
16069
16070 #define INTERNAL_FLAG_SELECTORS(__sel)                  \
16071         SELECTOR(__sel, NONE, 0) /* must be first */    \
16072         SELECTOR(__sel, WIPHY,                          \
16073                  NL80211_FLAG_NEED_WIPHY)               \
16074         SELECTOR(__sel, WDEV,                           \
16075                  NL80211_FLAG_NEED_WDEV)                \
16076         SELECTOR(__sel, NETDEV,                         \
16077                  NL80211_FLAG_NEED_NETDEV)              \
16078         SELECTOR(__sel, NETDEV_LINK,                    \
16079                  NL80211_FLAG_NEED_NETDEV |             \
16080                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16081         SELECTOR(__sel, NETDEV_NO_MLO,                  \
16082                  NL80211_FLAG_NEED_NETDEV |             \
16083                  NL80211_FLAG_MLO_UNSUPPORTED)  \
16084         SELECTOR(__sel, WIPHY_RTNL,                     \
16085                  NL80211_FLAG_NEED_WIPHY |              \
16086                  NL80211_FLAG_NEED_RTNL)                \
16087         SELECTOR(__sel, WIPHY_RTNL_NOMTX,               \
16088                  NL80211_FLAG_NEED_WIPHY |              \
16089                  NL80211_FLAG_NEED_RTNL |               \
16090                  NL80211_FLAG_NO_WIPHY_MTX)             \
16091         SELECTOR(__sel, WDEV_RTNL,                      \
16092                  NL80211_FLAG_NEED_WDEV |               \
16093                  NL80211_FLAG_NEED_RTNL)                \
16094         SELECTOR(__sel, NETDEV_RTNL,                    \
16095                  NL80211_FLAG_NEED_NETDEV |             \
16096                  NL80211_FLAG_NEED_RTNL)                \
16097         SELECTOR(__sel, NETDEV_UP,                      \
16098                  NL80211_FLAG_NEED_NETDEV_UP)           \
16099         SELECTOR(__sel, NETDEV_UP_LINK,                 \
16100                  NL80211_FLAG_NEED_NETDEV_UP |          \
16101                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16102         SELECTOR(__sel, NETDEV_UP_NO_MLO,               \
16103                  NL80211_FLAG_NEED_NETDEV_UP |          \
16104                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16105         SELECTOR(__sel, NETDEV_UP_NO_MLO_CLEAR,         \
16106                  NL80211_FLAG_NEED_NETDEV_UP |          \
16107                  NL80211_FLAG_CLEAR_SKB |               \
16108                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16109         SELECTOR(__sel, NETDEV_UP_NOTMX,                \
16110                  NL80211_FLAG_NEED_NETDEV_UP |          \
16111                  NL80211_FLAG_NO_WIPHY_MTX)             \
16112         SELECTOR(__sel, NETDEV_UP_NOTMX_NOMLO,          \
16113                  NL80211_FLAG_NEED_NETDEV_UP |          \
16114                  NL80211_FLAG_NO_WIPHY_MTX |            \
16115                  NL80211_FLAG_MLO_UNSUPPORTED)          \
16116         SELECTOR(__sel, NETDEV_UP_CLEAR,                \
16117                  NL80211_FLAG_NEED_NETDEV_UP |          \
16118                  NL80211_FLAG_CLEAR_SKB)                \
16119         SELECTOR(__sel, WDEV_UP,                        \
16120                  NL80211_FLAG_NEED_WDEV_UP)             \
16121         SELECTOR(__sel, WDEV_UP_LINK,                   \
16122                  NL80211_FLAG_NEED_WDEV_UP |            \
16123                  NL80211_FLAG_MLO_VALID_LINK_ID)        \
16124         SELECTOR(__sel, WDEV_UP_RTNL,                   \
16125                  NL80211_FLAG_NEED_WDEV_UP |            \
16126                  NL80211_FLAG_NEED_RTNL)                \
16127         SELECTOR(__sel, WIPHY_CLEAR,                    \
16128                  NL80211_FLAG_NEED_WIPHY |              \
16129                  NL80211_FLAG_CLEAR_SKB)
16130
16131 enum nl80211_internal_flags_selector {
16132 #define SELECTOR(_, name, value)        NL80211_IFL_SEL_##name,
16133         INTERNAL_FLAG_SELECTORS(_)
16134 #undef SELECTOR
16135 };
16136
16137 static u32 nl80211_internal_flags[] = {
16138 #define SELECTOR(_, name, value)        [NL80211_IFL_SEL_##name] = value,
16139         INTERNAL_FLAG_SELECTORS(_)
16140 #undef SELECTOR
16141 };
16142
16143 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
16144                             struct genl_info *info)
16145 {
16146         struct cfg80211_registered_device *rdev = NULL;
16147         struct wireless_dev *wdev = NULL;
16148         struct net_device *dev = NULL;
16149         u32 internal_flags;
16150         int err;
16151
16152         if (WARN_ON(ops->internal_flags >= ARRAY_SIZE(nl80211_internal_flags)))
16153                 return -EINVAL;
16154
16155         internal_flags = nl80211_internal_flags[ops->internal_flags];
16156
16157         rtnl_lock();
16158         if (internal_flags & NL80211_FLAG_NEED_WIPHY) {
16159                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
16160                 if (IS_ERR(rdev)) {
16161                         err = PTR_ERR(rdev);
16162                         goto out_unlock;
16163                 }
16164                 info->user_ptr[0] = rdev;
16165         } else if (internal_flags & NL80211_FLAG_NEED_NETDEV ||
16166                    internal_flags & NL80211_FLAG_NEED_WDEV) {
16167                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
16168                                                   info->attrs);
16169                 if (IS_ERR(wdev)) {
16170                         err = PTR_ERR(wdev);
16171                         goto out_unlock;
16172                 }
16173
16174                 dev = wdev->netdev;
16175                 dev_hold(dev);
16176                 rdev = wiphy_to_rdev(wdev->wiphy);
16177
16178                 if (internal_flags & NL80211_FLAG_NEED_NETDEV) {
16179                         if (!dev) {
16180                                 err = -EINVAL;
16181                                 goto out_unlock;
16182                         }
16183
16184                         info->user_ptr[1] = dev;
16185                 } else {
16186                         info->user_ptr[1] = wdev;
16187                 }
16188
16189                 if (internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
16190                     !wdev_running(wdev)) {
16191                         err = -ENETDOWN;
16192                         goto out_unlock;
16193                 }
16194
16195                 info->user_ptr[0] = rdev;
16196         }
16197
16198         if (internal_flags & NL80211_FLAG_MLO_VALID_LINK_ID) {
16199                 struct nlattr *link_id = info->attrs[NL80211_ATTR_MLO_LINK_ID];
16200
16201                 if (!wdev) {
16202                         err = -EINVAL;
16203                         goto out_unlock;
16204                 }
16205
16206                 /* MLO -> require valid link ID */
16207                 if (wdev->valid_links &&
16208                     (!link_id ||
16209                      !(wdev->valid_links & BIT(nla_get_u8(link_id))))) {
16210                         err = -EINVAL;
16211                         goto out_unlock;
16212                 }
16213
16214                 /* non-MLO -> no link ID attribute accepted */
16215                 if (!wdev->valid_links && link_id) {
16216                         err = -EINVAL;
16217                         goto out_unlock;
16218                 }
16219         }
16220
16221         if (internal_flags & NL80211_FLAG_MLO_UNSUPPORTED) {
16222                 if (info->attrs[NL80211_ATTR_MLO_LINK_ID] ||
16223                     (wdev && wdev->valid_links)) {
16224                         err = -EINVAL;
16225                         goto out_unlock;
16226                 }
16227         }
16228
16229         if (rdev && !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16230                 wiphy_lock(&rdev->wiphy);
16231                 /* we keep the mutex locked until post_doit */
16232                 __release(&rdev->wiphy.mtx);
16233         }
16234         if (!(internal_flags & NL80211_FLAG_NEED_RTNL))
16235                 rtnl_unlock();
16236
16237         return 0;
16238 out_unlock:
16239         rtnl_unlock();
16240         dev_put(dev);
16241         return err;
16242 }
16243
16244 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
16245                               struct genl_info *info)
16246 {
16247         u32 internal_flags = nl80211_internal_flags[ops->internal_flags];
16248
16249         if (info->user_ptr[1]) {
16250                 if (internal_flags & NL80211_FLAG_NEED_WDEV) {
16251                         struct wireless_dev *wdev = info->user_ptr[1];
16252
16253                         dev_put(wdev->netdev);
16254                 } else {
16255                         dev_put(info->user_ptr[1]);
16256                 }
16257         }
16258
16259         if (info->user_ptr[0] &&
16260             !(internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
16261                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
16262
16263                 /* we kept the mutex locked since pre_doit */
16264                 __acquire(&rdev->wiphy.mtx);
16265                 wiphy_unlock(&rdev->wiphy);
16266         }
16267
16268         if (internal_flags & NL80211_FLAG_NEED_RTNL)
16269                 rtnl_unlock();
16270
16271         /* If needed, clear the netlink message payload from the SKB
16272          * as it might contain key data that shouldn't stick around on
16273          * the heap after the SKB is freed. The netlink message header
16274          * is still needed for further processing, so leave it intact.
16275          */
16276         if (internal_flags & NL80211_FLAG_CLEAR_SKB) {
16277                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
16278
16279                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
16280         }
16281 }
16282
16283 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
16284                                      struct cfg80211_sar_specs *sar_specs,
16285                                      struct nlattr *spec[], int index)
16286 {
16287         u32 range_index, i;
16288
16289         if (!sar_specs || !spec)
16290                 return -EINVAL;
16291
16292         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
16293             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
16294                 return -EINVAL;
16295
16296         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
16297
16298         /* check if range_index exceeds num_freq_ranges */
16299         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
16300                 return -EINVAL;
16301
16302         /* check if range_index duplicates */
16303         for (i = 0; i < index; i++) {
16304                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
16305                         return -EINVAL;
16306         }
16307
16308         sar_specs->sub_specs[index].power =
16309                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
16310
16311         sar_specs->sub_specs[index].freq_range_index = range_index;
16312
16313         return 0;
16314 }
16315
16316 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
16317 {
16318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
16319         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
16320         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
16321         struct cfg80211_sar_specs *sar_spec;
16322         enum nl80211_sar_type type;
16323         struct nlattr *spec_list;
16324         u32 specs;
16325         int rem, err;
16326
16327         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
16328                 return -EOPNOTSUPP;
16329
16330         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
16331                 return -EINVAL;
16332
16333         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
16334                          info->attrs[NL80211_ATTR_SAR_SPEC],
16335                          NULL, NULL);
16336
16337         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
16338                 return -EINVAL;
16339
16340         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
16341         if (type != rdev->wiphy.sar_capa->type)
16342                 return -EINVAL;
16343
16344         specs = 0;
16345         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
16346                 specs++;
16347
16348         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
16349                 return -EINVAL;
16350
16351         sar_spec = kzalloc(struct_size(sar_spec, sub_specs, specs), GFP_KERNEL);
16352         if (!sar_spec)
16353                 return -ENOMEM;
16354
16355         sar_spec->type = type;
16356         specs = 0;
16357         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
16358                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
16359                                  spec_list, NULL, NULL);
16360
16361                 switch (type) {
16362                 case NL80211_SAR_TYPE_POWER:
16363                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
16364                                                       spec, specs)) {
16365                                 err = -EINVAL;
16366                                 goto error;
16367                         }
16368                         break;
16369                 default:
16370                         err = -EINVAL;
16371                         goto error;
16372                 }
16373                 specs++;
16374         }
16375
16376         sar_spec->num_sub_specs = specs;
16377
16378         rdev->cur_cmd_info = info;
16379         err = rdev_set_sar_specs(rdev, sar_spec);
16380         rdev->cur_cmd_info = NULL;
16381 error:
16382         kfree(sar_spec);
16383         return err;
16384 }
16385
16386 #define SELECTOR(__sel, name, value) \
16387         ((__sel) == (value)) ? NL80211_IFL_SEL_##name :
16388 int __missing_selector(void);
16389 #define IFLAGS(__val) INTERNAL_FLAG_SELECTORS(__val) __missing_selector()
16390
16391 static const struct genl_ops nl80211_ops[] = {
16392         {
16393                 .cmd = NL80211_CMD_GET_WIPHY,
16394                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16395                 .doit = nl80211_get_wiphy,
16396                 .dumpit = nl80211_dump_wiphy,
16397                 .done = nl80211_dump_wiphy_done,
16398                 /* can be retrieved by unprivileged users */
16399                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16400         },
16401 };
16402
16403 static const struct genl_small_ops nl80211_small_ops[] = {
16404         {
16405                 .cmd = NL80211_CMD_SET_WIPHY,
16406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16407                 .doit = nl80211_set_wiphy,
16408                 .flags = GENL_UNS_ADMIN_PERM,
16409         },
16410         {
16411                 .cmd = NL80211_CMD_GET_INTERFACE,
16412                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16413                 .doit = nl80211_get_interface,
16414                 .dumpit = nl80211_dump_interface,
16415                 /* can be retrieved by unprivileged users */
16416                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16417         },
16418         {
16419                 .cmd = NL80211_CMD_SET_INTERFACE,
16420                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16421                 .doit = nl80211_set_interface,
16422                 .flags = GENL_UNS_ADMIN_PERM,
16423                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16424                                          NL80211_FLAG_NEED_RTNL),
16425         },
16426         {
16427                 .cmd = NL80211_CMD_NEW_INTERFACE,
16428                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16429                 .doit = nl80211_new_interface,
16430                 .flags = GENL_UNS_ADMIN_PERM,
16431                 .internal_flags =
16432                         IFLAGS(NL80211_FLAG_NEED_WIPHY |
16433                                NL80211_FLAG_NEED_RTNL |
16434                                /* we take the wiphy mutex later ourselves */
16435                                NL80211_FLAG_NO_WIPHY_MTX),
16436         },
16437         {
16438                 .cmd = NL80211_CMD_DEL_INTERFACE,
16439                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16440                 .doit = nl80211_del_interface,
16441                 .flags = GENL_UNS_ADMIN_PERM,
16442                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16443                                          NL80211_FLAG_NEED_RTNL),
16444         },
16445         {
16446                 .cmd = NL80211_CMD_GET_KEY,
16447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16448                 .doit = nl80211_get_key,
16449                 .flags = GENL_UNS_ADMIN_PERM,
16450                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16451         },
16452         {
16453                 .cmd = NL80211_CMD_SET_KEY,
16454                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16455                 .doit = nl80211_set_key,
16456                 .flags = GENL_UNS_ADMIN_PERM,
16457                 /* cannot use NL80211_FLAG_MLO_VALID_LINK_ID, depends on key */
16458                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16459                                          NL80211_FLAG_CLEAR_SKB),
16460         },
16461         {
16462                 .cmd = NL80211_CMD_NEW_KEY,
16463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16464                 .doit = nl80211_new_key,
16465                 .flags = GENL_UNS_ADMIN_PERM,
16466                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16467                                          NL80211_FLAG_CLEAR_SKB),
16468         },
16469         {
16470                 .cmd = NL80211_CMD_DEL_KEY,
16471                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16472                 .doit = nl80211_del_key,
16473                 .flags = GENL_UNS_ADMIN_PERM,
16474                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16475         },
16476         {
16477                 .cmd = NL80211_CMD_SET_BEACON,
16478                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16479                 .flags = GENL_UNS_ADMIN_PERM,
16480                 .doit = nl80211_set_beacon,
16481                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16482                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16483         },
16484         {
16485                 .cmd = NL80211_CMD_START_AP,
16486                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16487                 .flags = GENL_UNS_ADMIN_PERM,
16488                 .doit = nl80211_start_ap,
16489                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16490                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16491         },
16492         {
16493                 .cmd = NL80211_CMD_STOP_AP,
16494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16495                 .flags = GENL_UNS_ADMIN_PERM,
16496                 .doit = nl80211_stop_ap,
16497                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16498                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16499         },
16500         {
16501                 .cmd = NL80211_CMD_GET_STATION,
16502                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16503                 .doit = nl80211_get_station,
16504                 .dumpit = nl80211_dump_station,
16505                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16506         },
16507         {
16508                 .cmd = NL80211_CMD_SET_STATION,
16509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16510                 .doit = nl80211_set_station,
16511                 .flags = GENL_UNS_ADMIN_PERM,
16512                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16513         },
16514         {
16515                 .cmd = NL80211_CMD_NEW_STATION,
16516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16517                 .doit = nl80211_new_station,
16518                 .flags = GENL_UNS_ADMIN_PERM,
16519                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16520         },
16521         {
16522                 .cmd = NL80211_CMD_DEL_STATION,
16523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16524                 .doit = nl80211_del_station,
16525                 .flags = GENL_UNS_ADMIN_PERM,
16526                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16527         },
16528         {
16529                 .cmd = NL80211_CMD_GET_MPATH,
16530                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16531                 .doit = nl80211_get_mpath,
16532                 .dumpit = nl80211_dump_mpath,
16533                 .flags = GENL_UNS_ADMIN_PERM,
16534                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16535         },
16536         {
16537                 .cmd = NL80211_CMD_GET_MPP,
16538                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16539                 .doit = nl80211_get_mpp,
16540                 .dumpit = nl80211_dump_mpp,
16541                 .flags = GENL_UNS_ADMIN_PERM,
16542                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16543         },
16544         {
16545                 .cmd = NL80211_CMD_SET_MPATH,
16546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16547                 .doit = nl80211_set_mpath,
16548                 .flags = GENL_UNS_ADMIN_PERM,
16549                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16550         },
16551         {
16552                 .cmd = NL80211_CMD_NEW_MPATH,
16553                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16554                 .doit = nl80211_new_mpath,
16555                 .flags = GENL_UNS_ADMIN_PERM,
16556                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16557         },
16558         {
16559                 .cmd = NL80211_CMD_DEL_MPATH,
16560                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16561                 .doit = nl80211_del_mpath,
16562                 .flags = GENL_UNS_ADMIN_PERM,
16563                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16564         },
16565         {
16566                 .cmd = NL80211_CMD_SET_BSS,
16567                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16568                 .doit = nl80211_set_bss,
16569                 .flags = GENL_UNS_ADMIN_PERM,
16570                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16571         },
16572         {
16573                 .cmd = NL80211_CMD_GET_REG,
16574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16575                 .doit = nl80211_get_reg_do,
16576                 .dumpit = nl80211_get_reg_dump,
16577                 /* can be retrieved by unprivileged users */
16578         },
16579 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
16580         {
16581                 .cmd = NL80211_CMD_SET_REG,
16582                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16583                 .doit = nl80211_set_reg,
16584                 .flags = GENL_ADMIN_PERM,
16585         },
16586 #endif
16587         {
16588                 .cmd = NL80211_CMD_REQ_SET_REG,
16589                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16590                 .doit = nl80211_req_set_reg,
16591                 .flags = GENL_ADMIN_PERM,
16592         },
16593         {
16594                 .cmd = NL80211_CMD_RELOAD_REGDB,
16595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16596                 .doit = nl80211_reload_regdb,
16597                 .flags = GENL_ADMIN_PERM,
16598         },
16599         {
16600                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
16601                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16602                 .doit = nl80211_get_mesh_config,
16603                 /* can be retrieved by unprivileged users */
16604                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16605         },
16606         {
16607                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
16608                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16609                 .doit = nl80211_update_mesh_config,
16610                 .flags = GENL_UNS_ADMIN_PERM,
16611                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16612         },
16613         {
16614                 .cmd = NL80211_CMD_TRIGGER_SCAN,
16615                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16616                 .doit = nl80211_trigger_scan,
16617                 .flags = GENL_UNS_ADMIN_PERM,
16618                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16619         },
16620         {
16621                 .cmd = NL80211_CMD_ABORT_SCAN,
16622                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16623                 .doit = nl80211_abort_scan,
16624                 .flags = GENL_UNS_ADMIN_PERM,
16625                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16626         },
16627         {
16628                 .cmd = NL80211_CMD_GET_SCAN,
16629                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16630                 .dumpit = nl80211_dump_scan,
16631         },
16632         {
16633                 .cmd = NL80211_CMD_START_SCHED_SCAN,
16634                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16635                 .doit = nl80211_start_sched_scan,
16636                 .flags = GENL_UNS_ADMIN_PERM,
16637                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16638         },
16639         {
16640                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
16641                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16642                 .doit = nl80211_stop_sched_scan,
16643                 .flags = GENL_UNS_ADMIN_PERM,
16644                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16645         },
16646         {
16647                 .cmd = NL80211_CMD_AUTHENTICATE,
16648                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16649                 .doit = nl80211_authenticate,
16650                 .flags = GENL_UNS_ADMIN_PERM,
16651                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16652                                          NL80211_FLAG_CLEAR_SKB),
16653         },
16654         {
16655                 .cmd = NL80211_CMD_ASSOCIATE,
16656                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16657                 .doit = nl80211_associate,
16658                 .flags = GENL_UNS_ADMIN_PERM,
16659                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16660                                          NL80211_FLAG_CLEAR_SKB),
16661         },
16662         {
16663                 .cmd = NL80211_CMD_DEAUTHENTICATE,
16664                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16665                 .doit = nl80211_deauthenticate,
16666                 .flags = GENL_UNS_ADMIN_PERM,
16667                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16668         },
16669         {
16670                 .cmd = NL80211_CMD_DISASSOCIATE,
16671                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16672                 .doit = nl80211_disassociate,
16673                 .flags = GENL_UNS_ADMIN_PERM,
16674                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16675         },
16676         {
16677                 .cmd = NL80211_CMD_JOIN_IBSS,
16678                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16679                 .doit = nl80211_join_ibss,
16680                 .flags = GENL_UNS_ADMIN_PERM,
16681                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16682         },
16683         {
16684                 .cmd = NL80211_CMD_LEAVE_IBSS,
16685                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16686                 .doit = nl80211_leave_ibss,
16687                 .flags = GENL_UNS_ADMIN_PERM,
16688                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16689         },
16690 #ifdef CONFIG_NL80211_TESTMODE
16691         {
16692                 .cmd = NL80211_CMD_TESTMODE,
16693                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16694                 .doit = nl80211_testmode_do,
16695                 .dumpit = nl80211_testmode_dump,
16696                 .flags = GENL_UNS_ADMIN_PERM,
16697                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16698         },
16699 #endif
16700         {
16701                 .cmd = NL80211_CMD_CONNECT,
16702                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16703                 .doit = nl80211_connect,
16704                 .flags = GENL_UNS_ADMIN_PERM,
16705                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16706                                          NL80211_FLAG_CLEAR_SKB),
16707         },
16708         {
16709                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
16710                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16711                 .doit = nl80211_update_connect_params,
16712                 .flags = GENL_ADMIN_PERM,
16713                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16714                                          NL80211_FLAG_CLEAR_SKB),
16715         },
16716         {
16717                 .cmd = NL80211_CMD_DISCONNECT,
16718                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16719                 .doit = nl80211_disconnect,
16720                 .flags = GENL_UNS_ADMIN_PERM,
16721                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16722         },
16723         {
16724                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
16725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16726                 .doit = nl80211_wiphy_netns,
16727                 .flags = GENL_UNS_ADMIN_PERM,
16728                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
16729                                          NL80211_FLAG_NEED_RTNL |
16730                                          NL80211_FLAG_NO_WIPHY_MTX),
16731         },
16732         {
16733                 .cmd = NL80211_CMD_GET_SURVEY,
16734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16735                 .dumpit = nl80211_dump_survey,
16736         },
16737         {
16738                 .cmd = NL80211_CMD_SET_PMKSA,
16739                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16740                 .doit = nl80211_setdel_pmksa,
16741                 .flags = GENL_UNS_ADMIN_PERM,
16742                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16743                                          NL80211_FLAG_CLEAR_SKB),
16744         },
16745         {
16746                 .cmd = NL80211_CMD_DEL_PMKSA,
16747                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16748                 .doit = nl80211_setdel_pmksa,
16749                 .flags = GENL_UNS_ADMIN_PERM,
16750                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16751         },
16752         {
16753                 .cmd = NL80211_CMD_FLUSH_PMKSA,
16754                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16755                 .doit = nl80211_flush_pmksa,
16756                 .flags = GENL_UNS_ADMIN_PERM,
16757                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16758         },
16759         {
16760                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
16761                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16762                 .doit = nl80211_remain_on_channel,
16763                 .flags = GENL_UNS_ADMIN_PERM,
16764                 /* FIXME: requiring a link ID here is probably not good */
16765                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16766                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16767         },
16768         {
16769                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16770                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16771                 .doit = nl80211_cancel_remain_on_channel,
16772                 .flags = GENL_UNS_ADMIN_PERM,
16773                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16774         },
16775         {
16776                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
16777                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16778                 .doit = nl80211_set_tx_bitrate_mask,
16779                 .flags = GENL_UNS_ADMIN_PERM,
16780                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16781                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16782         },
16783         {
16784                 .cmd = NL80211_CMD_REGISTER_FRAME,
16785                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16786                 .doit = nl80211_register_mgmt,
16787                 .flags = GENL_UNS_ADMIN_PERM,
16788                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV),
16789         },
16790         {
16791                 .cmd = NL80211_CMD_FRAME,
16792                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16793                 .doit = nl80211_tx_mgmt,
16794                 .flags = GENL_UNS_ADMIN_PERM,
16795                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16796         },
16797         {
16798                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
16799                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16800                 .doit = nl80211_tx_mgmt_cancel_wait,
16801                 .flags = GENL_UNS_ADMIN_PERM,
16802                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16803         },
16804         {
16805                 .cmd = NL80211_CMD_SET_POWER_SAVE,
16806                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16807                 .doit = nl80211_set_power_save,
16808                 .flags = GENL_UNS_ADMIN_PERM,
16809                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16810         },
16811         {
16812                 .cmd = NL80211_CMD_GET_POWER_SAVE,
16813                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16814                 .doit = nl80211_get_power_save,
16815                 /* can be retrieved by unprivileged users */
16816                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16817         },
16818         {
16819                 .cmd = NL80211_CMD_SET_CQM,
16820                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16821                 .doit = nl80211_set_cqm,
16822                 .flags = GENL_UNS_ADMIN_PERM,
16823                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16824         },
16825         {
16826                 .cmd = NL80211_CMD_SET_CHANNEL,
16827                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16828                 .doit = nl80211_set_channel,
16829                 .flags = GENL_UNS_ADMIN_PERM,
16830                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16831                                          NL80211_FLAG_MLO_VALID_LINK_ID),
16832         },
16833         {
16834                 .cmd = NL80211_CMD_JOIN_MESH,
16835                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16836                 .doit = nl80211_join_mesh,
16837                 .flags = GENL_UNS_ADMIN_PERM,
16838                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16839         },
16840         {
16841                 .cmd = NL80211_CMD_LEAVE_MESH,
16842                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16843                 .doit = nl80211_leave_mesh,
16844                 .flags = GENL_UNS_ADMIN_PERM,
16845                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16846         },
16847         {
16848                 .cmd = NL80211_CMD_JOIN_OCB,
16849                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16850                 .doit = nl80211_join_ocb,
16851                 .flags = GENL_UNS_ADMIN_PERM,
16852                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16853         },
16854         {
16855                 .cmd = NL80211_CMD_LEAVE_OCB,
16856                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16857                 .doit = nl80211_leave_ocb,
16858                 .flags = GENL_UNS_ADMIN_PERM,
16859                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16860         },
16861 #ifdef CONFIG_PM
16862         {
16863                 .cmd = NL80211_CMD_GET_WOWLAN,
16864                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16865                 .doit = nl80211_get_wowlan,
16866                 /* can be retrieved by unprivileged users */
16867                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16868         },
16869         {
16870                 .cmd = NL80211_CMD_SET_WOWLAN,
16871                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16872                 .doit = nl80211_set_wowlan,
16873                 .flags = GENL_UNS_ADMIN_PERM,
16874                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16875         },
16876 #endif
16877         {
16878                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
16879                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16880                 .doit = nl80211_set_rekey_data,
16881                 .flags = GENL_UNS_ADMIN_PERM,
16882                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
16883                                          NL80211_FLAG_CLEAR_SKB),
16884         },
16885         {
16886                 .cmd = NL80211_CMD_TDLS_MGMT,
16887                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16888                 .doit = nl80211_tdls_mgmt,
16889                 .flags = GENL_UNS_ADMIN_PERM,
16890                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16891         },
16892         {
16893                 .cmd = NL80211_CMD_TDLS_OPER,
16894                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16895                 .doit = nl80211_tdls_oper,
16896                 .flags = GENL_UNS_ADMIN_PERM,
16897                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16898         },
16899         {
16900                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
16901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16902                 .doit = nl80211_register_unexpected_frame,
16903                 .flags = GENL_UNS_ADMIN_PERM,
16904                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16905         },
16906         {
16907                 .cmd = NL80211_CMD_PROBE_CLIENT,
16908                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16909                 .doit = nl80211_probe_client,
16910                 .flags = GENL_UNS_ADMIN_PERM,
16911                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
16912         },
16913         {
16914                 .cmd = NL80211_CMD_REGISTER_BEACONS,
16915                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16916                 .doit = nl80211_register_beacons,
16917                 .flags = GENL_UNS_ADMIN_PERM,
16918                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
16919         },
16920         {
16921                 .cmd = NL80211_CMD_SET_NOACK_MAP,
16922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16923                 .doit = nl80211_set_noack_map,
16924                 .flags = GENL_UNS_ADMIN_PERM,
16925                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16926         },
16927         {
16928                 .cmd = NL80211_CMD_START_P2P_DEVICE,
16929                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16930                 .doit = nl80211_start_p2p_device,
16931                 .flags = GENL_UNS_ADMIN_PERM,
16932                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16933                                          NL80211_FLAG_NEED_RTNL),
16934         },
16935         {
16936                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
16937                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16938                 .doit = nl80211_stop_p2p_device,
16939                 .flags = GENL_UNS_ADMIN_PERM,
16940                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16941                                          NL80211_FLAG_NEED_RTNL),
16942         },
16943         {
16944                 .cmd = NL80211_CMD_START_NAN,
16945                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16946                 .doit = nl80211_start_nan,
16947                 .flags = GENL_ADMIN_PERM,
16948                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV |
16949                                          NL80211_FLAG_NEED_RTNL),
16950         },
16951         {
16952                 .cmd = NL80211_CMD_STOP_NAN,
16953                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16954                 .doit = nl80211_stop_nan,
16955                 .flags = GENL_ADMIN_PERM,
16956                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP |
16957                                          NL80211_FLAG_NEED_RTNL),
16958         },
16959         {
16960                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
16961                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16962                 .doit = nl80211_nan_add_func,
16963                 .flags = GENL_ADMIN_PERM,
16964                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16965         },
16966         {
16967                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
16968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16969                 .doit = nl80211_nan_del_func,
16970                 .flags = GENL_ADMIN_PERM,
16971                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16972         },
16973         {
16974                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
16975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16976                 .doit = nl80211_nan_change_config,
16977                 .flags = GENL_ADMIN_PERM,
16978                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
16979         },
16980         {
16981                 .cmd = NL80211_CMD_SET_MCAST_RATE,
16982                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16983                 .doit = nl80211_set_mcast_rate,
16984                 .flags = GENL_UNS_ADMIN_PERM,
16985                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
16986         },
16987         {
16988                 .cmd = NL80211_CMD_SET_MAC_ACL,
16989                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16990                 .doit = nl80211_set_mac_acl,
16991                 .flags = GENL_UNS_ADMIN_PERM,
16992                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
16993                                          NL80211_FLAG_MLO_UNSUPPORTED),
16994         },
16995         {
16996                 .cmd = NL80211_CMD_RADAR_DETECT,
16997                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
16998                 .doit = nl80211_start_radar_detection,
16999                 .flags = GENL_UNS_ADMIN_PERM,
17000                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17001                                          NL80211_FLAG_NO_WIPHY_MTX |
17002                                          NL80211_FLAG_MLO_UNSUPPORTED),
17003         },
17004         {
17005                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
17006                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17007                 .doit = nl80211_get_protocol_features,
17008         },
17009         {
17010                 .cmd = NL80211_CMD_UPDATE_FT_IES,
17011                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17012                 .doit = nl80211_update_ft_ies,
17013                 .flags = GENL_UNS_ADMIN_PERM,
17014                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17015         },
17016         {
17017                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
17018                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17019                 .doit = nl80211_crit_protocol_start,
17020                 .flags = GENL_UNS_ADMIN_PERM,
17021                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17022         },
17023         {
17024                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
17025                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17026                 .doit = nl80211_crit_protocol_stop,
17027                 .flags = GENL_UNS_ADMIN_PERM,
17028                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17029         },
17030         {
17031                 .cmd = NL80211_CMD_GET_COALESCE,
17032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17033                 .doit = nl80211_get_coalesce,
17034                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17035         },
17036         {
17037                 .cmd = NL80211_CMD_SET_COALESCE,
17038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17039                 .doit = nl80211_set_coalesce,
17040                 .flags = GENL_UNS_ADMIN_PERM,
17041                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY),
17042         },
17043         {
17044                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
17045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17046                 .doit = nl80211_channel_switch,
17047                 .flags = GENL_UNS_ADMIN_PERM,
17048                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17049                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17050         },
17051         {
17052                 .cmd = NL80211_CMD_VENDOR,
17053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17054                 .doit = nl80211_vendor_cmd,
17055                 .dumpit = nl80211_vendor_cmd_dump,
17056                 .flags = GENL_UNS_ADMIN_PERM,
17057                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17058                                          NL80211_FLAG_CLEAR_SKB),
17059         },
17060         {
17061                 .cmd = NL80211_CMD_SET_QOS_MAP,
17062                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17063                 .doit = nl80211_set_qos_map,
17064                 .flags = GENL_UNS_ADMIN_PERM,
17065                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17066         },
17067         {
17068                 .cmd = NL80211_CMD_ADD_TX_TS,
17069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17070                 .doit = nl80211_add_tx_ts,
17071                 .flags = GENL_UNS_ADMIN_PERM,
17072                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17073                                          NL80211_FLAG_MLO_UNSUPPORTED),
17074         },
17075         {
17076                 .cmd = NL80211_CMD_DEL_TX_TS,
17077                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17078                 .doit = nl80211_del_tx_ts,
17079                 .flags = GENL_UNS_ADMIN_PERM,
17080                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17081         },
17082         {
17083                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
17084                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17085                 .doit = nl80211_tdls_channel_switch,
17086                 .flags = GENL_UNS_ADMIN_PERM,
17087                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17088         },
17089         {
17090                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
17091                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17092                 .doit = nl80211_tdls_cancel_channel_switch,
17093                 .flags = GENL_UNS_ADMIN_PERM,
17094                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17095         },
17096         {
17097                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
17098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17099                 .doit = nl80211_set_multicast_to_unicast,
17100                 .flags = GENL_UNS_ADMIN_PERM,
17101                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV),
17102         },
17103         {
17104                 .cmd = NL80211_CMD_SET_PMK,
17105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17106                 .doit = nl80211_set_pmk,
17107                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17108                                          NL80211_FLAG_CLEAR_SKB),
17109         },
17110         {
17111                 .cmd = NL80211_CMD_DEL_PMK,
17112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17113                 .doit = nl80211_del_pmk,
17114                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17115         },
17116         {
17117                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
17118                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17119                 .doit = nl80211_external_auth,
17120                 .flags = GENL_ADMIN_PERM,
17121                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17122         },
17123         {
17124                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
17125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17126                 .doit = nl80211_tx_control_port,
17127                 .flags = GENL_UNS_ADMIN_PERM,
17128                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17129         },
17130         {
17131                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
17132                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17133                 .doit = nl80211_get_ftm_responder_stats,
17134                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17135                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17136         },
17137         {
17138                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
17139                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17140                 .doit = nl80211_pmsr_start,
17141                 .flags = GENL_UNS_ADMIN_PERM,
17142                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WDEV_UP),
17143         },
17144         {
17145                 .cmd = NL80211_CMD_NOTIFY_RADAR,
17146                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17147                 .doit = nl80211_notify_radar_detection,
17148                 .flags = GENL_UNS_ADMIN_PERM,
17149                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17150         },
17151         {
17152                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
17153                 .doit = nl80211_update_owe_info,
17154                 .flags = GENL_ADMIN_PERM,
17155                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17156         },
17157         {
17158                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
17159                 .doit = nl80211_probe_mesh_link,
17160                 .flags = GENL_UNS_ADMIN_PERM,
17161                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17162         },
17163         {
17164                 .cmd = NL80211_CMD_SET_TID_CONFIG,
17165                 .doit = nl80211_set_tid_config,
17166                 .flags = GENL_UNS_ADMIN_PERM,
17167                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV |
17168                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17169         },
17170         {
17171                 .cmd = NL80211_CMD_SET_SAR_SPECS,
17172                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17173                 .doit = nl80211_set_sar_specs,
17174                 .flags = GENL_UNS_ADMIN_PERM,
17175                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_WIPHY |
17176                                          NL80211_FLAG_NEED_RTNL),
17177         },
17178         {
17179                 .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
17180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17181                 .doit = nl80211_color_change,
17182                 .flags = GENL_UNS_ADMIN_PERM,
17183                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17184         },
17185         {
17186                 .cmd = NL80211_CMD_SET_FILS_AAD,
17187                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
17188                 .doit = nl80211_set_fils_aad,
17189                 .flags = GENL_UNS_ADMIN_PERM,
17190                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17191         },
17192         {
17193                 .cmd = NL80211_CMD_ADD_LINK,
17194                 .doit = nl80211_add_link,
17195                 .flags = GENL_UNS_ADMIN_PERM,
17196                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP),
17197         },
17198         {
17199                 .cmd = NL80211_CMD_REMOVE_LINK,
17200                 .doit = nl80211_remove_link,
17201                 .flags = GENL_UNS_ADMIN_PERM,
17202                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17203                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17204         },
17205         {
17206                 .cmd = NL80211_CMD_ADD_LINK_STA,
17207                 .doit = nl80211_add_link_station,
17208                 .flags = GENL_UNS_ADMIN_PERM,
17209                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17210                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17211         },
17212         {
17213                 .cmd = NL80211_CMD_MODIFY_LINK_STA,
17214                 .doit = nl80211_modify_link_station,
17215                 .flags = GENL_UNS_ADMIN_PERM,
17216                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17217                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17218         },
17219         {
17220                 .cmd = NL80211_CMD_REMOVE_LINK_STA,
17221                 .doit = nl80211_remove_link_station,
17222                 .flags = GENL_UNS_ADMIN_PERM,
17223                 .internal_flags = IFLAGS(NL80211_FLAG_NEED_NETDEV_UP |
17224                                          NL80211_FLAG_MLO_VALID_LINK_ID),
17225         },
17226 };
17227
17228 static struct genl_family nl80211_fam __ro_after_init = {
17229         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
17230         .hdrsize = 0,                   /* no private header */
17231         .version = 1,                   /* no particular meaning now */
17232         .maxattr = NL80211_ATTR_MAX,
17233         .policy = nl80211_policy,
17234         .netnsok = true,
17235         .pre_doit = nl80211_pre_doit,
17236         .post_doit = nl80211_post_doit,
17237         .module = THIS_MODULE,
17238         .ops = nl80211_ops,
17239         .n_ops = ARRAY_SIZE(nl80211_ops),
17240         .small_ops = nl80211_small_ops,
17241         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
17242         .resv_start_op = NL80211_CMD_REMOVE_LINK_STA + 1,
17243         .mcgrps = nl80211_mcgrps,
17244         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
17245         .parallel_ops = true,
17246 };
17247
17248 /* notification functions */
17249
17250 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
17251                           enum nl80211_commands cmd)
17252 {
17253         struct sk_buff *msg;
17254         struct nl80211_dump_wiphy_state state = {};
17255
17256         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
17257                 cmd != NL80211_CMD_DEL_WIPHY);
17258
17259         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17260         if (!msg)
17261                 return;
17262
17263         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
17264                 nlmsg_free(msg);
17265                 return;
17266         }
17267
17268         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17269                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17270 }
17271
17272 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
17273                                 struct wireless_dev *wdev,
17274                                 enum nl80211_commands cmd)
17275 {
17276         struct sk_buff *msg;
17277
17278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17279         if (!msg)
17280                 return;
17281
17282         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
17283                 nlmsg_free(msg);
17284                 return;
17285         }
17286
17287         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17288                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
17289 }
17290
17291 static int nl80211_add_scan_req(struct sk_buff *msg,
17292                                 struct cfg80211_registered_device *rdev)
17293 {
17294         struct cfg80211_scan_request *req = rdev->scan_req;
17295         struct nlattr *nest;
17296         int i;
17297         struct cfg80211_scan_info *info;
17298
17299         if (WARN_ON(!req))
17300                 return 0;
17301
17302         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
17303         if (!nest)
17304                 goto nla_put_failure;
17305         for (i = 0; i < req->n_ssids; i++) {
17306                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
17307                         goto nla_put_failure;
17308         }
17309         nla_nest_end(msg, nest);
17310
17311         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
17312                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
17313                 if (!nest)
17314                         goto nla_put_failure;
17315                 for (i = 0; i < req->n_channels; i++) {
17316                         if (nla_put_u32(msg, i,
17317                                    ieee80211_channel_to_khz(req->channels[i])))
17318                                 goto nla_put_failure;
17319                 }
17320                 nla_nest_end(msg, nest);
17321         } else {
17322                 nest = nla_nest_start_noflag(msg,
17323                                              NL80211_ATTR_SCAN_FREQUENCIES);
17324                 if (!nest)
17325                         goto nla_put_failure;
17326                 for (i = 0; i < req->n_channels; i++) {
17327                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
17328                                 goto nla_put_failure;
17329                 }
17330                 nla_nest_end(msg, nest);
17331         }
17332
17333         if (req->ie &&
17334             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
17335                 goto nla_put_failure;
17336
17337         if (req->flags &&
17338             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
17339                 goto nla_put_failure;
17340
17341         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
17342                 &rdev->scan_req->info;
17343         if (info->scan_start_tsf &&
17344             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
17345                                info->scan_start_tsf, NL80211_BSS_PAD) ||
17346              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
17347                      info->tsf_bssid)))
17348                 goto nla_put_failure;
17349
17350         return 0;
17351  nla_put_failure:
17352         return -ENOBUFS;
17353 }
17354
17355 static int nl80211_prep_scan_msg(struct sk_buff *msg,
17356                                  struct cfg80211_registered_device *rdev,
17357                                  struct wireless_dev *wdev,
17358                                  u32 portid, u32 seq, int flags,
17359                                  u32 cmd)
17360 {
17361         void *hdr;
17362
17363         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
17364         if (!hdr)
17365                 return -1;
17366
17367         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17368             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17369                                          wdev->netdev->ifindex)) ||
17370             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17371                               NL80211_ATTR_PAD))
17372                 goto nla_put_failure;
17373
17374         /* ignore errors and send incomplete event anyway */
17375         nl80211_add_scan_req(msg, rdev);
17376
17377         genlmsg_end(msg, hdr);
17378         return 0;
17379
17380  nla_put_failure:
17381         genlmsg_cancel(msg, hdr);
17382         return -EMSGSIZE;
17383 }
17384
17385 static int
17386 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
17387                             struct cfg80211_sched_scan_request *req, u32 cmd)
17388 {
17389         void *hdr;
17390
17391         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17392         if (!hdr)
17393                 return -1;
17394
17395         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
17396                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
17397             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
17398             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
17399                               NL80211_ATTR_PAD))
17400                 goto nla_put_failure;
17401
17402         genlmsg_end(msg, hdr);
17403         return 0;
17404
17405  nla_put_failure:
17406         genlmsg_cancel(msg, hdr);
17407         return -EMSGSIZE;
17408 }
17409
17410 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
17411                              struct wireless_dev *wdev)
17412 {
17413         struct sk_buff *msg;
17414
17415         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17416         if (!msg)
17417                 return;
17418
17419         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17420                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
17421                 nlmsg_free(msg);
17422                 return;
17423         }
17424
17425         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17426                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17427 }
17428
17429 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
17430                                        struct wireless_dev *wdev, bool aborted)
17431 {
17432         struct sk_buff *msg;
17433
17434         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17435         if (!msg)
17436                 return NULL;
17437
17438         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
17439                                   aborted ? NL80211_CMD_SCAN_ABORTED :
17440                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
17441                 nlmsg_free(msg);
17442                 return NULL;
17443         }
17444
17445         return msg;
17446 }
17447
17448 /* send message created by nl80211_build_scan_msg() */
17449 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
17450                            struct sk_buff *msg)
17451 {
17452         if (!msg)
17453                 return;
17454
17455         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17456                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17457 }
17458
17459 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
17460 {
17461         struct sk_buff *msg;
17462
17463         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17464         if (!msg)
17465                 return;
17466
17467         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
17468                 nlmsg_free(msg);
17469                 return;
17470         }
17471
17472         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
17473                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
17474 }
17475
17476 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
17477                                           struct regulatory_request *request)
17478 {
17479         /* Userspace can always count this one always being set */
17480         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
17481                 goto nla_put_failure;
17482
17483         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
17484                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17485                                NL80211_REGDOM_TYPE_WORLD))
17486                         goto nla_put_failure;
17487         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
17488                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17489                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
17490                         goto nla_put_failure;
17491         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
17492                    request->intersect) {
17493                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17494                                NL80211_REGDOM_TYPE_INTERSECTION))
17495                         goto nla_put_failure;
17496         } else {
17497                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
17498                                NL80211_REGDOM_TYPE_COUNTRY) ||
17499                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
17500                                    request->alpha2))
17501                         goto nla_put_failure;
17502         }
17503
17504         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
17505                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
17506
17507                 if (wiphy &&
17508                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
17509                         goto nla_put_failure;
17510
17511                 if (wiphy &&
17512                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
17513                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
17514                         goto nla_put_failure;
17515         }
17516
17517         return true;
17518
17519 nla_put_failure:
17520         return false;
17521 }
17522
17523 /*
17524  * This can happen on global regulatory changes or device specific settings
17525  * based on custom regulatory domains.
17526  */
17527 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
17528                                      struct regulatory_request *request)
17529 {
17530         struct sk_buff *msg;
17531         void *hdr;
17532
17533         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17534         if (!msg)
17535                 return;
17536
17537         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
17538         if (!hdr)
17539                 goto nla_put_failure;
17540
17541         if (!nl80211_reg_change_event_fill(msg, request))
17542                 goto nla_put_failure;
17543
17544         genlmsg_end(msg, hdr);
17545
17546         rcu_read_lock();
17547         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
17548                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
17549         rcu_read_unlock();
17550
17551         return;
17552
17553 nla_put_failure:
17554         nlmsg_free(msg);
17555 }
17556
17557 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
17558                                     struct net_device *netdev,
17559                                     const u8 *buf, size_t len,
17560                                     enum nl80211_commands cmd, gfp_t gfp,
17561                                     int uapsd_queues, const u8 *req_ies,
17562                                     size_t req_ies_len, bool reconnect)
17563 {
17564         struct sk_buff *msg;
17565         void *hdr;
17566
17567         msg = nlmsg_new(100 + len + req_ies_len, gfp);
17568         if (!msg)
17569                 return;
17570
17571         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17572         if (!hdr) {
17573                 nlmsg_free(msg);
17574                 return;
17575         }
17576
17577         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17578             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17579             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
17580             (req_ies &&
17581              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
17582                 goto nla_put_failure;
17583
17584         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
17585                 goto nla_put_failure;
17586
17587         if (uapsd_queues >= 0) {
17588                 struct nlattr *nla_wmm =
17589                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
17590                 if (!nla_wmm)
17591                         goto nla_put_failure;
17592
17593                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
17594                                uapsd_queues))
17595                         goto nla_put_failure;
17596
17597                 nla_nest_end(msg, nla_wmm);
17598         }
17599
17600         genlmsg_end(msg, hdr);
17601
17602         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17603                                 NL80211_MCGRP_MLME, gfp);
17604         return;
17605
17606  nla_put_failure:
17607         nlmsg_free(msg);
17608 }
17609
17610 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
17611                           struct net_device *netdev, const u8 *buf,
17612                           size_t len, gfp_t gfp)
17613 {
17614         nl80211_send_mlme_event(rdev, netdev, buf, len,
17615                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
17616                                 false);
17617 }
17618
17619 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
17620                            struct net_device *netdev,
17621                            struct cfg80211_rx_assoc_resp *data)
17622 {
17623         nl80211_send_mlme_event(rdev, netdev, data->buf, data->len,
17624                                 NL80211_CMD_ASSOCIATE, GFP_KERNEL,
17625                                 data->uapsd_queues,
17626                                 data->req_ies, data->req_ies_len, false);
17627 }
17628
17629 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
17630                          struct net_device *netdev, const u8 *buf,
17631                          size_t len, bool reconnect, gfp_t gfp)
17632 {
17633         nl80211_send_mlme_event(rdev, netdev, buf, len,
17634                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
17635                                 reconnect);
17636 }
17637
17638 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
17639                            struct net_device *netdev, const u8 *buf,
17640                            size_t len, bool reconnect, gfp_t gfp)
17641 {
17642         nl80211_send_mlme_event(rdev, netdev, buf, len,
17643                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
17644                                 reconnect);
17645 }
17646
17647 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
17648                                   size_t len)
17649 {
17650         struct wireless_dev *wdev = dev->ieee80211_ptr;
17651         struct wiphy *wiphy = wdev->wiphy;
17652         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17653         const struct ieee80211_mgmt *mgmt = (void *)buf;
17654         u32 cmd;
17655
17656         if (WARN_ON(len < 2))
17657                 return;
17658
17659         if (ieee80211_is_deauth(mgmt->frame_control)) {
17660                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
17661         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
17662                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
17663         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
17664                 if (wdev->unprot_beacon_reported &&
17665                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
17666                         return;
17667                 cmd = NL80211_CMD_UNPROT_BEACON;
17668                 wdev->unprot_beacon_reported = jiffies;
17669         } else {
17670                 return;
17671         }
17672
17673         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
17674         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
17675                                 NULL, 0, false);
17676 }
17677 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
17678
17679 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
17680                                       struct net_device *netdev, int cmd,
17681                                       const u8 *addr, gfp_t gfp)
17682 {
17683         struct sk_buff *msg;
17684         void *hdr;
17685
17686         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17687         if (!msg)
17688                 return;
17689
17690         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
17691         if (!hdr) {
17692                 nlmsg_free(msg);
17693                 return;
17694         }
17695
17696         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17697             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17698             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17699             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
17700                 goto nla_put_failure;
17701
17702         genlmsg_end(msg, hdr);
17703
17704         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17705                                 NL80211_MCGRP_MLME, gfp);
17706         return;
17707
17708  nla_put_failure:
17709         nlmsg_free(msg);
17710 }
17711
17712 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
17713                                struct net_device *netdev, const u8 *addr,
17714                                gfp_t gfp)
17715 {
17716         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
17717                                   addr, gfp);
17718 }
17719
17720 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
17721                                 struct net_device *netdev, const u8 *addr,
17722                                 gfp_t gfp)
17723 {
17724         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
17725                                   addr, gfp);
17726 }
17727
17728 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
17729                                  struct net_device *netdev,
17730                                  struct cfg80211_connect_resp_params *cr,
17731                                  gfp_t gfp)
17732 {
17733         struct sk_buff *msg;
17734         void *hdr;
17735         unsigned int link;
17736         size_t link_info_size = 0;
17737         const u8 *connected_addr = cr->valid_links ?
17738                                    cr->ap_mld_addr : cr->links[0].bssid;
17739
17740         if (cr->valid_links) {
17741                 for_each_valid_link(cr, link) {
17742                         /* Nested attribute header */
17743                         link_info_size += NLA_HDRLEN;
17744                         /* Link ID */
17745                         link_info_size += nla_total_size(sizeof(u8));
17746                         link_info_size += cr->links[link].addr ?
17747                                           nla_total_size(ETH_ALEN) : 0;
17748                         link_info_size += (cr->links[link].bssid ||
17749                                            cr->links[link].bss) ?
17750                                           nla_total_size(ETH_ALEN) : 0;
17751                 }
17752         }
17753
17754         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
17755                         cr->fils.kek_len + cr->fils.pmk_len +
17756                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0) + link_info_size,
17757                         gfp);
17758         if (!msg)
17759                 return;
17760
17761         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
17762         if (!hdr) {
17763                 nlmsg_free(msg);
17764                 return;
17765         }
17766
17767         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17768             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17769             (connected_addr &&
17770              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr)) ||
17771             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
17772                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
17773                         cr->status) ||
17774             (cr->status < 0 &&
17775              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
17776               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
17777                           cr->timeout_reason))) ||
17778             (cr->req_ie &&
17779              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
17780             (cr->resp_ie &&
17781              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
17782                      cr->resp_ie)) ||
17783             (cr->fils.update_erp_next_seq_num &&
17784              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17785                          cr->fils.erp_next_seq_num)) ||
17786             (cr->status == WLAN_STATUS_SUCCESS &&
17787              ((cr->fils.kek &&
17788                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
17789                        cr->fils.kek)) ||
17790               (cr->fils.pmk &&
17791                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
17792               (cr->fils.pmkid &&
17793                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
17794                 goto nla_put_failure;
17795
17796         if (cr->valid_links) {
17797                 int i = 1;
17798                 struct nlattr *nested;
17799
17800                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17801                 if (!nested)
17802                         goto nla_put_failure;
17803
17804                 for_each_valid_link(cr, link) {
17805                         struct nlattr *nested_mlo_links;
17806                         const u8 *bssid = cr->links[link].bss ?
17807                                           cr->links[link].bss->bssid :
17808                                           cr->links[link].bssid;
17809
17810                         nested_mlo_links = nla_nest_start(msg, i);
17811                         if (!nested_mlo_links)
17812                                 goto nla_put_failure;
17813
17814                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17815                             (bssid &&
17816                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17817                             (cr->links[link].addr &&
17818                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17819                                      cr->links[link].addr)))
17820                                 goto nla_put_failure;
17821
17822                         nla_nest_end(msg, nested_mlo_links);
17823                         i++;
17824                 }
17825                 nla_nest_end(msg, nested);
17826         }
17827
17828         genlmsg_end(msg, hdr);
17829
17830         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17831                                 NL80211_MCGRP_MLME, gfp);
17832         return;
17833
17834  nla_put_failure:
17835         nlmsg_free(msg);
17836 }
17837
17838 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
17839                          struct net_device *netdev,
17840                          struct cfg80211_roam_info *info, gfp_t gfp)
17841 {
17842         struct sk_buff *msg;
17843         void *hdr;
17844         size_t link_info_size = 0;
17845         unsigned int link;
17846         const u8 *connected_addr = info->ap_mld_addr ?
17847                                    info->ap_mld_addr :
17848                                    (info->links[0].bss ?
17849                                     info->links[0].bss->bssid :
17850                                     info->links[0].bssid);
17851
17852         if (info->valid_links) {
17853                 for_each_valid_link(info, link) {
17854                         /* Nested attribute header */
17855                         link_info_size += NLA_HDRLEN;
17856                         /* Link ID */
17857                         link_info_size += nla_total_size(sizeof(u8));
17858                         link_info_size += info->links[link].addr ?
17859                                           nla_total_size(ETH_ALEN) : 0;
17860                         link_info_size += (info->links[link].bssid ||
17861                                            info->links[link].bss) ?
17862                                           nla_total_size(ETH_ALEN) : 0;
17863                 }
17864         }
17865
17866         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
17867                         info->fils.kek_len + info->fils.pmk_len +
17868                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0) +
17869                         link_info_size, gfp);
17870         if (!msg)
17871                 return;
17872
17873         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
17874         if (!hdr) {
17875                 nlmsg_free(msg);
17876                 return;
17877         }
17878
17879         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17880             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17881             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, connected_addr) ||
17882             (info->req_ie &&
17883              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
17884                      info->req_ie)) ||
17885             (info->resp_ie &&
17886              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
17887                      info->resp_ie)) ||
17888             (info->fils.update_erp_next_seq_num &&
17889              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
17890                          info->fils.erp_next_seq_num)) ||
17891             (info->fils.kek &&
17892              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
17893                      info->fils.kek)) ||
17894             (info->fils.pmk &&
17895              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
17896             (info->fils.pmkid &&
17897              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
17898                 goto nla_put_failure;
17899
17900         if (info->valid_links) {
17901                 int i = 1;
17902                 struct nlattr *nested;
17903
17904                 nested = nla_nest_start(msg, NL80211_ATTR_MLO_LINKS);
17905                 if (!nested)
17906                         goto nla_put_failure;
17907
17908                 for_each_valid_link(info, link) {
17909                         struct nlattr *nested_mlo_links;
17910                         const u8 *bssid = info->links[link].bss ?
17911                                           info->links[link].bss->bssid :
17912                                           info->links[link].bssid;
17913
17914                         nested_mlo_links = nla_nest_start(msg, i);
17915                         if (!nested_mlo_links)
17916                                 goto nla_put_failure;
17917
17918                         if (nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link) ||
17919                             (bssid &&
17920                              nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, bssid)) ||
17921                             (info->links[link].addr &&
17922                              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
17923                                      info->links[link].addr)))
17924                                 goto nla_put_failure;
17925
17926                         nla_nest_end(msg, nested_mlo_links);
17927                         i++;
17928                 }
17929                 nla_nest_end(msg, nested);
17930         }
17931
17932         genlmsg_end(msg, hdr);
17933
17934         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17935                                 NL80211_MCGRP_MLME, gfp);
17936         return;
17937
17938  nla_put_failure:
17939         nlmsg_free(msg);
17940 }
17941
17942 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
17943                                   struct net_device *netdev, const u8 *bssid)
17944 {
17945         struct sk_buff *msg;
17946         void *hdr;
17947
17948         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17949         if (!msg)
17950                 return;
17951
17952         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
17953         if (!hdr) {
17954                 nlmsg_free(msg);
17955                 return;
17956         }
17957
17958         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17959             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17960             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17961                 goto nla_put_failure;
17962
17963         genlmsg_end(msg, hdr);
17964
17965         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17966                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17967         return;
17968
17969  nla_put_failure:
17970         nlmsg_free(msg);
17971 }
17972
17973 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
17974                                struct net_device *netdev, u16 reason,
17975                                const u8 *ie, size_t ie_len, bool from_ap)
17976 {
17977         struct sk_buff *msg;
17978         void *hdr;
17979
17980         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
17981         if (!msg)
17982                 return;
17983
17984         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
17985         if (!hdr) {
17986                 nlmsg_free(msg);
17987                 return;
17988         }
17989
17990         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17991             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17992             (reason &&
17993              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
17994             (from_ap &&
17995              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
17996             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
17997                 goto nla_put_failure;
17998
17999         genlmsg_end(msg, hdr);
18000
18001         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18002                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18003         return;
18004
18005  nla_put_failure:
18006         nlmsg_free(msg);
18007 }
18008
18009 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
18010                              struct net_device *netdev, const u8 *bssid,
18011                              gfp_t gfp)
18012 {
18013         struct sk_buff *msg;
18014         void *hdr;
18015
18016         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18017         if (!msg)
18018                 return;
18019
18020         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
18021         if (!hdr) {
18022                 nlmsg_free(msg);
18023                 return;
18024         }
18025
18026         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18027             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18028             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18029                 goto nla_put_failure;
18030
18031         genlmsg_end(msg, hdr);
18032
18033         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18034                                 NL80211_MCGRP_MLME, gfp);
18035         return;
18036
18037  nla_put_failure:
18038         nlmsg_free(msg);
18039 }
18040
18041 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
18042                                         const u8 *ie, u8 ie_len,
18043                                         int sig_dbm, gfp_t gfp)
18044 {
18045         struct wireless_dev *wdev = dev->ieee80211_ptr;
18046         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18047         struct sk_buff *msg;
18048         void *hdr;
18049
18050         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
18051                 return;
18052
18053         trace_cfg80211_notify_new_peer_candidate(dev, addr);
18054
18055         msg = nlmsg_new(100 + ie_len, gfp);
18056         if (!msg)
18057                 return;
18058
18059         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
18060         if (!hdr) {
18061                 nlmsg_free(msg);
18062                 return;
18063         }
18064
18065         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18066             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18067             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18068             (ie_len && ie &&
18069              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
18070             (sig_dbm &&
18071              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
18072                 goto nla_put_failure;
18073
18074         genlmsg_end(msg, hdr);
18075
18076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18077                                 NL80211_MCGRP_MLME, gfp);
18078         return;
18079
18080  nla_put_failure:
18081         nlmsg_free(msg);
18082 }
18083 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
18084
18085 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
18086                                  struct net_device *netdev, const u8 *addr,
18087                                  enum nl80211_key_type key_type, int key_id,
18088                                  const u8 *tsc, gfp_t gfp)
18089 {
18090         struct sk_buff *msg;
18091         void *hdr;
18092
18093         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18094         if (!msg)
18095                 return;
18096
18097         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
18098         if (!hdr) {
18099                 nlmsg_free(msg);
18100                 return;
18101         }
18102
18103         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18104             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18105             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
18106             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
18107             (key_id != -1 &&
18108              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
18109             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
18110                 goto nla_put_failure;
18111
18112         genlmsg_end(msg, hdr);
18113
18114         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18115                                 NL80211_MCGRP_MLME, gfp);
18116         return;
18117
18118  nla_put_failure:
18119         nlmsg_free(msg);
18120 }
18121
18122 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
18123                                     struct ieee80211_channel *channel_before,
18124                                     struct ieee80211_channel *channel_after)
18125 {
18126         struct sk_buff *msg;
18127         void *hdr;
18128         struct nlattr *nl_freq;
18129
18130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
18131         if (!msg)
18132                 return;
18133
18134         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
18135         if (!hdr) {
18136                 nlmsg_free(msg);
18137                 return;
18138         }
18139
18140         /*
18141          * Since we are applying the beacon hint to a wiphy we know its
18142          * wiphy_idx is valid
18143          */
18144         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
18145                 goto nla_put_failure;
18146
18147         /* Before */
18148         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
18149         if (!nl_freq)
18150                 goto nla_put_failure;
18151
18152         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
18153                 goto nla_put_failure;
18154         nla_nest_end(msg, nl_freq);
18155
18156         /* After */
18157         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
18158         if (!nl_freq)
18159                 goto nla_put_failure;
18160
18161         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
18162                 goto nla_put_failure;
18163         nla_nest_end(msg, nl_freq);
18164
18165         genlmsg_end(msg, hdr);
18166
18167         rcu_read_lock();
18168         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
18169                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
18170         rcu_read_unlock();
18171
18172         return;
18173
18174 nla_put_failure:
18175         nlmsg_free(msg);
18176 }
18177
18178 static void nl80211_send_remain_on_chan_event(
18179         int cmd, struct cfg80211_registered_device *rdev,
18180         struct wireless_dev *wdev, u64 cookie,
18181         struct ieee80211_channel *chan,
18182         unsigned int duration, gfp_t gfp)
18183 {
18184         struct sk_buff *msg;
18185         void *hdr;
18186
18187         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18188         if (!msg)
18189                 return;
18190
18191         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18192         if (!hdr) {
18193                 nlmsg_free(msg);
18194                 return;
18195         }
18196
18197         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18198             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18199                                          wdev->netdev->ifindex)) ||
18200             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18201                               NL80211_ATTR_PAD) ||
18202             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
18203             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
18204                         NL80211_CHAN_NO_HT) ||
18205             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
18206                               NL80211_ATTR_PAD))
18207                 goto nla_put_failure;
18208
18209         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
18210             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
18211                 goto nla_put_failure;
18212
18213         genlmsg_end(msg, hdr);
18214
18215         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18216                                 NL80211_MCGRP_MLME, gfp);
18217         return;
18218
18219  nla_put_failure:
18220         nlmsg_free(msg);
18221 }
18222
18223 void cfg80211_assoc_comeback(struct net_device *netdev,
18224                              const u8 *ap_addr, u32 timeout)
18225 {
18226         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18227         struct wiphy *wiphy = wdev->wiphy;
18228         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18229         struct sk_buff *msg;
18230         void *hdr;
18231
18232         trace_cfg80211_assoc_comeback(wdev, ap_addr, timeout);
18233
18234         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
18235         if (!msg)
18236                 return;
18237
18238         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ASSOC_COMEBACK);
18239         if (!hdr) {
18240                 nlmsg_free(msg);
18241                 return;
18242         }
18243
18244         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18245             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18246             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ap_addr) ||
18247             nla_put_u32(msg, NL80211_ATTR_TIMEOUT, timeout))
18248                 goto nla_put_failure;
18249
18250         genlmsg_end(msg, hdr);
18251
18252         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18253                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18254         return;
18255
18256  nla_put_failure:
18257         nlmsg_free(msg);
18258 }
18259 EXPORT_SYMBOL(cfg80211_assoc_comeback);
18260
18261 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
18262                                struct ieee80211_channel *chan,
18263                                unsigned int duration, gfp_t gfp)
18264 {
18265         struct wiphy *wiphy = wdev->wiphy;
18266         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18267
18268         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
18269         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
18270                                           rdev, wdev, cookie, chan,
18271                                           duration, gfp);
18272 }
18273 EXPORT_SYMBOL(cfg80211_ready_on_channel);
18274
18275 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
18276                                         struct ieee80211_channel *chan,
18277                                         gfp_t gfp)
18278 {
18279         struct wiphy *wiphy = wdev->wiphy;
18280         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18281
18282         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
18283         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
18284                                           rdev, wdev, cookie, chan, 0, gfp);
18285 }
18286 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
18287
18288 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
18289                                         struct ieee80211_channel *chan,
18290                                         gfp_t gfp)
18291 {
18292         struct wiphy *wiphy = wdev->wiphy;
18293         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18294
18295         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
18296         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
18297                                           rdev, wdev, cookie, chan, 0, gfp);
18298 }
18299 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
18300
18301 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
18302                       struct station_info *sinfo, gfp_t gfp)
18303 {
18304         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18305         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18306         struct sk_buff *msg;
18307
18308         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
18309
18310         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18311         if (!msg)
18312                 return;
18313
18314         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
18315                                  rdev, dev, mac_addr, sinfo) < 0) {
18316                 nlmsg_free(msg);
18317                 return;
18318         }
18319
18320         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18321                                 NL80211_MCGRP_MLME, gfp);
18322 }
18323 EXPORT_SYMBOL(cfg80211_new_sta);
18324
18325 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
18326                             struct station_info *sinfo, gfp_t gfp)
18327 {
18328         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18329         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18330         struct sk_buff *msg;
18331         struct station_info empty_sinfo = {};
18332
18333         if (!sinfo)
18334                 sinfo = &empty_sinfo;
18335
18336         trace_cfg80211_del_sta(dev, mac_addr);
18337
18338         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18339         if (!msg) {
18340                 cfg80211_sinfo_release_content(sinfo);
18341                 return;
18342         }
18343
18344         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
18345                                  rdev, dev, mac_addr, sinfo) < 0) {
18346                 nlmsg_free(msg);
18347                 return;
18348         }
18349
18350         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18351                                 NL80211_MCGRP_MLME, gfp);
18352 }
18353 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
18354
18355 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
18356                           enum nl80211_connect_failed_reason reason,
18357                           gfp_t gfp)
18358 {
18359         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
18360         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18361         struct sk_buff *msg;
18362         void *hdr;
18363
18364         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
18365         if (!msg)
18366                 return;
18367
18368         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
18369         if (!hdr) {
18370                 nlmsg_free(msg);
18371                 return;
18372         }
18373
18374         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18375             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
18376             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
18377                 goto nla_put_failure;
18378
18379         genlmsg_end(msg, hdr);
18380
18381         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18382                                 NL80211_MCGRP_MLME, gfp);
18383         return;
18384
18385  nla_put_failure:
18386         nlmsg_free(msg);
18387 }
18388 EXPORT_SYMBOL(cfg80211_conn_failed);
18389
18390 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
18391                                        const u8 *addr, gfp_t gfp)
18392 {
18393         struct wireless_dev *wdev = dev->ieee80211_ptr;
18394         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18395         struct sk_buff *msg;
18396         void *hdr;
18397         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
18398
18399         if (!nlportid)
18400                 return false;
18401
18402         msg = nlmsg_new(100, gfp);
18403         if (!msg)
18404                 return true;
18405
18406         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
18407         if (!hdr) {
18408                 nlmsg_free(msg);
18409                 return true;
18410         }
18411
18412         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18413             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18414             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
18415                 goto nla_put_failure;
18416
18417         genlmsg_end(msg, hdr);
18418         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18419         return true;
18420
18421  nla_put_failure:
18422         nlmsg_free(msg);
18423         return true;
18424 }
18425
18426 bool cfg80211_rx_spurious_frame(struct net_device *dev,
18427                                 const u8 *addr, gfp_t gfp)
18428 {
18429         struct wireless_dev *wdev = dev->ieee80211_ptr;
18430         bool ret;
18431
18432         trace_cfg80211_rx_spurious_frame(dev, addr);
18433
18434         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18435                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
18436                 trace_cfg80211_return_bool(false);
18437                 return false;
18438         }
18439         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
18440                                          addr, gfp);
18441         trace_cfg80211_return_bool(ret);
18442         return ret;
18443 }
18444 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
18445
18446 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
18447                                         const u8 *addr, gfp_t gfp)
18448 {
18449         struct wireless_dev *wdev = dev->ieee80211_ptr;
18450         bool ret;
18451
18452         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
18453
18454         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
18455                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
18456                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
18457                 trace_cfg80211_return_bool(false);
18458                 return false;
18459         }
18460         ret = __nl80211_unexpected_frame(dev,
18461                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
18462                                          addr, gfp);
18463         trace_cfg80211_return_bool(ret);
18464         return ret;
18465 }
18466 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
18467
18468 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
18469                       struct wireless_dev *wdev, u32 nlportid,
18470                       struct cfg80211_rx_info *info, gfp_t gfp)
18471 {
18472         struct net_device *netdev = wdev->netdev;
18473         struct sk_buff *msg;
18474         void *hdr;
18475
18476         msg = nlmsg_new(100 + info->len, gfp);
18477         if (!msg)
18478                 return -ENOMEM;
18479
18480         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
18481         if (!hdr) {
18482                 nlmsg_free(msg);
18483                 return -ENOMEM;
18484         }
18485
18486         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18487             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18488                                         netdev->ifindex)) ||
18489             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18490                               NL80211_ATTR_PAD) ||
18491             (info->have_link_id &&
18492              nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, info->link_id)) ||
18493             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(info->freq)) ||
18494             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, info->freq % 1000) ||
18495             (info->sig_dbm &&
18496              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, info->sig_dbm)) ||
18497             nla_put(msg, NL80211_ATTR_FRAME, info->len, info->buf) ||
18498             (info->flags &&
18499              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, info->flags)) ||
18500             (info->rx_tstamp && nla_put_u64_64bit(msg,
18501                                                   NL80211_ATTR_RX_HW_TIMESTAMP,
18502                                                   info->rx_tstamp,
18503                                                   NL80211_ATTR_PAD)) ||
18504             (info->ack_tstamp && nla_put_u64_64bit(msg,
18505                                                    NL80211_ATTR_TX_HW_TIMESTAMP,
18506                                                    info->ack_tstamp,
18507                                                    NL80211_ATTR_PAD)))
18508                 goto nla_put_failure;
18509
18510         genlmsg_end(msg, hdr);
18511
18512         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18513
18514  nla_put_failure:
18515         nlmsg_free(msg);
18516         return -ENOBUFS;
18517 }
18518
18519 static void nl80211_frame_tx_status(struct wireless_dev *wdev,
18520                                     struct cfg80211_tx_status *status,
18521                                     gfp_t gfp, enum nl80211_commands command)
18522 {
18523         struct wiphy *wiphy = wdev->wiphy;
18524         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18525         struct net_device *netdev = wdev->netdev;
18526         struct sk_buff *msg;
18527         void *hdr;
18528
18529         if (command == NL80211_CMD_FRAME_TX_STATUS)
18530                 trace_cfg80211_mgmt_tx_status(wdev, status->cookie,
18531                                               status->ack);
18532         else
18533                 trace_cfg80211_control_port_tx_status(wdev, status->cookie,
18534                                                       status->ack);
18535
18536         msg = nlmsg_new(100 + status->len, gfp);
18537         if (!msg)
18538                 return;
18539
18540         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
18541         if (!hdr) {
18542                 nlmsg_free(msg);
18543                 return;
18544         }
18545
18546         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18547             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
18548                                    netdev->ifindex)) ||
18549             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18550                               NL80211_ATTR_PAD) ||
18551             nla_put(msg, NL80211_ATTR_FRAME, status->len, status->buf) ||
18552             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, status->cookie,
18553                               NL80211_ATTR_PAD) ||
18554             (status->ack && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
18555             (status->tx_tstamp &&
18556              nla_put_u64_64bit(msg, NL80211_ATTR_TX_HW_TIMESTAMP,
18557                                status->tx_tstamp, NL80211_ATTR_PAD)) ||
18558             (status->ack_tstamp &&
18559              nla_put_u64_64bit(msg, NL80211_ATTR_RX_HW_TIMESTAMP,
18560                                status->ack_tstamp, NL80211_ATTR_PAD)))
18561                 goto nla_put_failure;
18562
18563         genlmsg_end(msg, hdr);
18564
18565         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18566                                 NL80211_MCGRP_MLME, gfp);
18567         return;
18568
18569 nla_put_failure:
18570         nlmsg_free(msg);
18571 }
18572
18573 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
18574                                      const u8 *buf, size_t len, bool ack,
18575                                      gfp_t gfp)
18576 {
18577         struct cfg80211_tx_status status = {
18578                 .cookie = cookie,
18579                 .buf = buf,
18580                 .len = len,
18581                 .ack = ack
18582         };
18583
18584         nl80211_frame_tx_status(wdev, &status, gfp,
18585                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
18586 }
18587 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
18588
18589 void cfg80211_mgmt_tx_status_ext(struct wireless_dev *wdev,
18590                                  struct cfg80211_tx_status *status, gfp_t gfp)
18591 {
18592         nl80211_frame_tx_status(wdev, status, gfp, NL80211_CMD_FRAME_TX_STATUS);
18593 }
18594 EXPORT_SYMBOL(cfg80211_mgmt_tx_status_ext);
18595
18596 static int __nl80211_rx_control_port(struct net_device *dev,
18597                                      struct sk_buff *skb,
18598                                      bool unencrypted, gfp_t gfp)
18599 {
18600         struct wireless_dev *wdev = dev->ieee80211_ptr;
18601         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18602         struct ethhdr *ehdr = eth_hdr(skb);
18603         const u8 *addr = ehdr->h_source;
18604         u16 proto = be16_to_cpu(skb->protocol);
18605         struct sk_buff *msg;
18606         void *hdr;
18607         struct nlattr *frame;
18608
18609         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
18610
18611         if (!nlportid)
18612                 return -ENOENT;
18613
18614         msg = nlmsg_new(100 + skb->len, gfp);
18615         if (!msg)
18616                 return -ENOMEM;
18617
18618         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
18619         if (!hdr) {
18620                 nlmsg_free(msg);
18621                 return -ENOBUFS;
18622         }
18623
18624         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18625             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18626             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18627                               NL80211_ATTR_PAD) ||
18628             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
18629             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
18630             (unencrypted && nla_put_flag(msg,
18631                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
18632                 goto nla_put_failure;
18633
18634         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
18635         if (!frame)
18636                 goto nla_put_failure;
18637
18638         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
18639         genlmsg_end(msg, hdr);
18640
18641         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
18642
18643  nla_put_failure:
18644         nlmsg_free(msg);
18645         return -ENOBUFS;
18646 }
18647
18648 bool cfg80211_rx_control_port(struct net_device *dev,
18649                               struct sk_buff *skb, bool unencrypted)
18650 {
18651         int ret;
18652
18653         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
18654         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
18655         trace_cfg80211_return_bool(ret == 0);
18656         return ret == 0;
18657 }
18658 EXPORT_SYMBOL(cfg80211_rx_control_port);
18659
18660 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
18661                                             const char *mac, gfp_t gfp)
18662 {
18663         struct wireless_dev *wdev = dev->ieee80211_ptr;
18664         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18665         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18666         void **cb;
18667
18668         if (!msg)
18669                 return NULL;
18670
18671         cb = (void **)msg->cb;
18672
18673         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
18674         if (!cb[0]) {
18675                 nlmsg_free(msg);
18676                 return NULL;
18677         }
18678
18679         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18680             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
18681                 goto nla_put_failure;
18682
18683         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
18684                 goto nla_put_failure;
18685
18686         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
18687         if (!cb[1])
18688                 goto nla_put_failure;
18689
18690         cb[2] = rdev;
18691
18692         return msg;
18693  nla_put_failure:
18694         nlmsg_free(msg);
18695         return NULL;
18696 }
18697
18698 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
18699 {
18700         void **cb = (void **)msg->cb;
18701         struct cfg80211_registered_device *rdev = cb[2];
18702
18703         nla_nest_end(msg, cb[1]);
18704         genlmsg_end(msg, cb[0]);
18705
18706         memset(msg->cb, 0, sizeof(msg->cb));
18707
18708         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18709                                 NL80211_MCGRP_MLME, gfp);
18710 }
18711
18712 void cfg80211_cqm_rssi_notify(struct net_device *dev,
18713                               enum nl80211_cqm_rssi_threshold_event rssi_event,
18714                               s32 rssi_level, gfp_t gfp)
18715 {
18716         struct sk_buff *msg;
18717         struct wireless_dev *wdev = dev->ieee80211_ptr;
18718         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18719
18720         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
18721
18722         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
18723                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
18724                 return;
18725
18726         if (wdev->cqm_config) {
18727                 wdev->cqm_config->last_rssi_event_value = rssi_level;
18728
18729                 cfg80211_cqm_rssi_update(rdev, dev);
18730
18731                 if (rssi_level == 0)
18732                         rssi_level = wdev->cqm_config->last_rssi_event_value;
18733         }
18734
18735         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18736         if (!msg)
18737                 return;
18738
18739         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
18740                         rssi_event))
18741                 goto nla_put_failure;
18742
18743         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
18744                                       rssi_level))
18745                 goto nla_put_failure;
18746
18747         cfg80211_send_cqm(msg, gfp);
18748
18749         return;
18750
18751  nla_put_failure:
18752         nlmsg_free(msg);
18753 }
18754 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
18755
18756 void cfg80211_cqm_txe_notify(struct net_device *dev,
18757                              const u8 *peer, u32 num_packets,
18758                              u32 rate, u32 intvl, gfp_t gfp)
18759 {
18760         struct sk_buff *msg;
18761
18762         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18763         if (!msg)
18764                 return;
18765
18766         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
18767                 goto nla_put_failure;
18768
18769         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
18770                 goto nla_put_failure;
18771
18772         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
18773                 goto nla_put_failure;
18774
18775         cfg80211_send_cqm(msg, gfp);
18776         return;
18777
18778  nla_put_failure:
18779         nlmsg_free(msg);
18780 }
18781 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
18782
18783 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
18784                                  const u8 *peer, u32 num_packets, gfp_t gfp)
18785 {
18786         struct sk_buff *msg;
18787
18788         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
18789
18790         msg = cfg80211_prepare_cqm(dev, peer, gfp);
18791         if (!msg)
18792                 return;
18793
18794         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
18795                 goto nla_put_failure;
18796
18797         cfg80211_send_cqm(msg, gfp);
18798         return;
18799
18800  nla_put_failure:
18801         nlmsg_free(msg);
18802 }
18803 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
18804
18805 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
18806 {
18807         struct sk_buff *msg;
18808
18809         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
18810         if (!msg)
18811                 return;
18812
18813         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
18814                 goto nla_put_failure;
18815
18816         cfg80211_send_cqm(msg, gfp);
18817         return;
18818
18819  nla_put_failure:
18820         nlmsg_free(msg);
18821 }
18822 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
18823
18824 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
18825                                      struct net_device *netdev, const u8 *bssid,
18826                                      const u8 *replay_ctr, gfp_t gfp)
18827 {
18828         struct sk_buff *msg;
18829         struct nlattr *rekey_attr;
18830         void *hdr;
18831
18832         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18833         if (!msg)
18834                 return;
18835
18836         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
18837         if (!hdr) {
18838                 nlmsg_free(msg);
18839                 return;
18840         }
18841
18842         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18843             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18844             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
18845                 goto nla_put_failure;
18846
18847         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
18848         if (!rekey_attr)
18849                 goto nla_put_failure;
18850
18851         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
18852                     NL80211_REPLAY_CTR_LEN, replay_ctr))
18853                 goto nla_put_failure;
18854
18855         nla_nest_end(msg, rekey_attr);
18856
18857         genlmsg_end(msg, hdr);
18858
18859         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18860                                 NL80211_MCGRP_MLME, gfp);
18861         return;
18862
18863  nla_put_failure:
18864         nlmsg_free(msg);
18865 }
18866
18867 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
18868                                const u8 *replay_ctr, gfp_t gfp)
18869 {
18870         struct wireless_dev *wdev = dev->ieee80211_ptr;
18871         struct wiphy *wiphy = wdev->wiphy;
18872         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18873
18874         trace_cfg80211_gtk_rekey_notify(dev, bssid);
18875         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
18876 }
18877 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
18878
18879 static void
18880 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
18881                                struct net_device *netdev, int index,
18882                                const u8 *bssid, bool preauth, gfp_t gfp)
18883 {
18884         struct sk_buff *msg;
18885         struct nlattr *attr;
18886         void *hdr;
18887
18888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18889         if (!msg)
18890                 return;
18891
18892         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
18893         if (!hdr) {
18894                 nlmsg_free(msg);
18895                 return;
18896         }
18897
18898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18899             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18900                 goto nla_put_failure;
18901
18902         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
18903         if (!attr)
18904                 goto nla_put_failure;
18905
18906         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
18907             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
18908             (preauth &&
18909              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
18910                 goto nla_put_failure;
18911
18912         nla_nest_end(msg, attr);
18913
18914         genlmsg_end(msg, hdr);
18915
18916         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18917                                 NL80211_MCGRP_MLME, gfp);
18918         return;
18919
18920  nla_put_failure:
18921         nlmsg_free(msg);
18922 }
18923
18924 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
18925                                      const u8 *bssid, bool preauth, gfp_t gfp)
18926 {
18927         struct wireless_dev *wdev = dev->ieee80211_ptr;
18928         struct wiphy *wiphy = wdev->wiphy;
18929         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18930
18931         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
18932         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
18933 }
18934 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
18935
18936 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
18937                                      struct net_device *netdev,
18938                                      unsigned int link_id,
18939                                      struct cfg80211_chan_def *chandef,
18940                                      gfp_t gfp,
18941                                      enum nl80211_commands notif,
18942                                      u8 count, bool quiet)
18943 {
18944         struct wireless_dev *wdev = netdev->ieee80211_ptr;
18945         struct sk_buff *msg;
18946         void *hdr;
18947
18948         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18949         if (!msg)
18950                 return;
18951
18952         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
18953         if (!hdr) {
18954                 nlmsg_free(msg);
18955                 return;
18956         }
18957
18958         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
18959                 goto nla_put_failure;
18960
18961         if (wdev->valid_links &&
18962             nla_put_u8(msg, NL80211_ATTR_MLO_LINK_ID, link_id))
18963                 goto nla_put_failure;
18964
18965         if (nl80211_send_chandef(msg, chandef))
18966                 goto nla_put_failure;
18967
18968         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
18969                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
18970                         goto nla_put_failure;
18971                 if (quiet &&
18972                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
18973                         goto nla_put_failure;
18974         }
18975
18976         genlmsg_end(msg, hdr);
18977
18978         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18979                                 NL80211_MCGRP_MLME, gfp);
18980         return;
18981
18982  nla_put_failure:
18983         nlmsg_free(msg);
18984 }
18985
18986 void cfg80211_ch_switch_notify(struct net_device *dev,
18987                                struct cfg80211_chan_def *chandef,
18988                                unsigned int link_id)
18989 {
18990         struct wireless_dev *wdev = dev->ieee80211_ptr;
18991         struct wiphy *wiphy = wdev->wiphy;
18992         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18993
18994         ASSERT_WDEV_LOCK(wdev);
18995         WARN_INVALID_LINK_ID(wdev, link_id);
18996
18997         trace_cfg80211_ch_switch_notify(dev, chandef, link_id);
18998
18999         switch (wdev->iftype) {
19000         case NL80211_IFTYPE_STATION:
19001         case NL80211_IFTYPE_P2P_CLIENT:
19002                 if (!WARN_ON(!wdev->links[link_id].client.current_bss))
19003                         cfg80211_update_assoc_bss_entry(wdev, link_id,
19004                                                         chandef->chan);
19005                 break;
19006         case NL80211_IFTYPE_MESH_POINT:
19007                 wdev->u.mesh.chandef = *chandef;
19008                 wdev->u.mesh.preset_chandef = *chandef;
19009                 break;
19010         case NL80211_IFTYPE_AP:
19011         case NL80211_IFTYPE_P2P_GO:
19012                 wdev->links[link_id].ap.chandef = *chandef;
19013                 break;
19014         case NL80211_IFTYPE_ADHOC:
19015                 wdev->u.ibss.chandef = *chandef;
19016                 break;
19017         default:
19018                 WARN_ON(1);
19019                 break;
19020         }
19021
19022         cfg80211_sched_dfs_chan_update(rdev);
19023
19024         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19025                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
19026 }
19027 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
19028
19029 void cfg80211_ch_switch_started_notify(struct net_device *dev,
19030                                        struct cfg80211_chan_def *chandef,
19031                                        unsigned int link_id, u8 count,
19032                                        bool quiet)
19033 {
19034         struct wireless_dev *wdev = dev->ieee80211_ptr;
19035         struct wiphy *wiphy = wdev->wiphy;
19036         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19037
19038         ASSERT_WDEV_LOCK(wdev);
19039         WARN_INVALID_LINK_ID(wdev, link_id);
19040
19041         trace_cfg80211_ch_switch_started_notify(dev, chandef, link_id);
19042
19043         nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
19044                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
19045                                  count, quiet);
19046 }
19047 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
19048
19049 int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
19050                               enum nl80211_commands cmd, u8 count,
19051                               u64 color_bitmap)
19052 {
19053         struct wireless_dev *wdev = dev->ieee80211_ptr;
19054         struct wiphy *wiphy = wdev->wiphy;
19055         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19056         struct sk_buff *msg;
19057         void *hdr;
19058
19059         ASSERT_WDEV_LOCK(wdev);
19060
19061         trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
19062
19063         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19064         if (!msg)
19065                 return -ENOMEM;
19066
19067         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
19068         if (!hdr)
19069                 goto nla_put_failure;
19070
19071         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19072                 goto nla_put_failure;
19073
19074         if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
19075             nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
19076                 goto nla_put_failure;
19077
19078         if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
19079             nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
19080                               color_bitmap, NL80211_ATTR_PAD))
19081                 goto nla_put_failure;
19082
19083         genlmsg_end(msg, hdr);
19084
19085         return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
19086                                        msg, 0, NL80211_MCGRP_MLME, gfp);
19087
19088 nla_put_failure:
19089         nlmsg_free(msg);
19090         return -EINVAL;
19091 }
19092 EXPORT_SYMBOL(cfg80211_bss_color_notify);
19093
19094 void
19095 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
19096                      const struct cfg80211_chan_def *chandef,
19097                      enum nl80211_radar_event event,
19098                      struct net_device *netdev, gfp_t gfp)
19099 {
19100         struct sk_buff *msg;
19101         void *hdr;
19102
19103         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19104         if (!msg)
19105                 return;
19106
19107         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
19108         if (!hdr) {
19109                 nlmsg_free(msg);
19110                 return;
19111         }
19112
19113         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19114                 goto nla_put_failure;
19115
19116         /* NOP and radar events don't need a netdev parameter */
19117         if (netdev) {
19118                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
19119
19120                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19121                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19122                                       NL80211_ATTR_PAD))
19123                         goto nla_put_failure;
19124         }
19125
19126         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
19127                 goto nla_put_failure;
19128
19129         if (nl80211_send_chandef(msg, chandef))
19130                 goto nla_put_failure;
19131
19132         genlmsg_end(msg, hdr);
19133
19134         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19135                                 NL80211_MCGRP_MLME, gfp);
19136         return;
19137
19138  nla_put_failure:
19139         nlmsg_free(msg);
19140 }
19141
19142 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
19143                                        struct sta_opmode_info *sta_opmode,
19144                                        gfp_t gfp)
19145 {
19146         struct sk_buff *msg;
19147         struct wireless_dev *wdev = dev->ieee80211_ptr;
19148         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19149         void *hdr;
19150
19151         if (WARN_ON(!mac))
19152                 return;
19153
19154         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19155         if (!msg)
19156                 return;
19157
19158         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
19159         if (!hdr) {
19160                 nlmsg_free(msg);
19161                 return;
19162         }
19163
19164         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
19165                 goto nla_put_failure;
19166
19167         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
19168                 goto nla_put_failure;
19169
19170         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
19171                 goto nla_put_failure;
19172
19173         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
19174             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
19175                 goto nla_put_failure;
19176
19177         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
19178             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
19179                 goto nla_put_failure;
19180
19181         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
19182             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
19183                 goto nla_put_failure;
19184
19185         genlmsg_end(msg, hdr);
19186
19187         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19188                                 NL80211_MCGRP_MLME, gfp);
19189
19190         return;
19191
19192 nla_put_failure:
19193         nlmsg_free(msg);
19194 }
19195 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
19196
19197 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
19198                            u64 cookie, bool acked, s32 ack_signal,
19199                            bool is_valid_ack_signal, gfp_t gfp)
19200 {
19201         struct wireless_dev *wdev = dev->ieee80211_ptr;
19202         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19203         struct sk_buff *msg;
19204         void *hdr;
19205
19206         trace_cfg80211_probe_status(dev, addr, cookie, acked);
19207
19208         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19209
19210         if (!msg)
19211                 return;
19212
19213         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
19214         if (!hdr) {
19215                 nlmsg_free(msg);
19216                 return;
19217         }
19218
19219         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19220             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19221             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
19222             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
19223                               NL80211_ATTR_PAD) ||
19224             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
19225             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
19226                                                 ack_signal)))
19227                 goto nla_put_failure;
19228
19229         genlmsg_end(msg, hdr);
19230
19231         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19232                                 NL80211_MCGRP_MLME, gfp);
19233         return;
19234
19235  nla_put_failure:
19236         nlmsg_free(msg);
19237 }
19238 EXPORT_SYMBOL(cfg80211_probe_status);
19239
19240 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
19241                                      size_t len, int freq, int sig_dbm)
19242 {
19243         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19244         struct sk_buff *msg;
19245         void *hdr;
19246         struct cfg80211_beacon_registration *reg;
19247
19248         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
19249
19250         spin_lock_bh(&rdev->beacon_registrations_lock);
19251         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
19252                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
19253                 if (!msg) {
19254                         spin_unlock_bh(&rdev->beacon_registrations_lock);
19255                         return;
19256                 }
19257
19258                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
19259                 if (!hdr)
19260                         goto nla_put_failure;
19261
19262                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19263                     (freq &&
19264                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
19265                                   KHZ_TO_MHZ(freq)) ||
19266                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
19267                                   freq % 1000))) ||
19268                     (sig_dbm &&
19269                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
19270                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
19271                         goto nla_put_failure;
19272
19273                 genlmsg_end(msg, hdr);
19274
19275                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
19276         }
19277         spin_unlock_bh(&rdev->beacon_registrations_lock);
19278         return;
19279
19280  nla_put_failure:
19281         spin_unlock_bh(&rdev->beacon_registrations_lock);
19282         nlmsg_free(msg);
19283 }
19284 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
19285
19286 #ifdef CONFIG_PM
19287 static int cfg80211_net_detect_results(struct sk_buff *msg,
19288                                        struct cfg80211_wowlan_wakeup *wakeup)
19289 {
19290         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
19291         struct nlattr *nl_results, *nl_match, *nl_freqs;
19292         int i, j;
19293
19294         nl_results = nla_nest_start_noflag(msg,
19295                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
19296         if (!nl_results)
19297                 return -EMSGSIZE;
19298
19299         for (i = 0; i < nd->n_matches; i++) {
19300                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
19301
19302                 nl_match = nla_nest_start_noflag(msg, i);
19303                 if (!nl_match)
19304                         break;
19305
19306                 /* The SSID attribute is optional in nl80211, but for
19307                  * simplicity reasons it's always present in the
19308                  * cfg80211 structure.  If a driver can't pass the
19309                  * SSID, that needs to be changed.  A zero length SSID
19310                  * is still a valid SSID (wildcard), so it cannot be
19311                  * used for this purpose.
19312                  */
19313                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
19314                             match->ssid.ssid)) {
19315                         nla_nest_cancel(msg, nl_match);
19316                         goto out;
19317                 }
19318
19319                 if (match->n_channels) {
19320                         nl_freqs = nla_nest_start_noflag(msg,
19321                                                          NL80211_ATTR_SCAN_FREQUENCIES);
19322                         if (!nl_freqs) {
19323                                 nla_nest_cancel(msg, nl_match);
19324                                 goto out;
19325                         }
19326
19327                         for (j = 0; j < match->n_channels; j++) {
19328                                 if (nla_put_u32(msg, j, match->channels[j])) {
19329                                         nla_nest_cancel(msg, nl_freqs);
19330                                         nla_nest_cancel(msg, nl_match);
19331                                         goto out;
19332                                 }
19333                         }
19334
19335                         nla_nest_end(msg, nl_freqs);
19336                 }
19337
19338                 nla_nest_end(msg, nl_match);
19339         }
19340
19341 out:
19342         nla_nest_end(msg, nl_results);
19343         return 0;
19344 }
19345
19346 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
19347                                    struct cfg80211_wowlan_wakeup *wakeup,
19348                                    gfp_t gfp)
19349 {
19350         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19351         struct sk_buff *msg;
19352         void *hdr;
19353         int size = 200;
19354
19355         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
19356
19357         if (wakeup)
19358                 size += wakeup->packet_present_len;
19359
19360         msg = nlmsg_new(size, gfp);
19361         if (!msg)
19362                 return;
19363
19364         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
19365         if (!hdr)
19366                 goto free_msg;
19367
19368         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19369             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19370                               NL80211_ATTR_PAD))
19371                 goto free_msg;
19372
19373         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
19374                                         wdev->netdev->ifindex))
19375                 goto free_msg;
19376
19377         if (wakeup) {
19378                 struct nlattr *reasons;
19379
19380                 reasons = nla_nest_start_noflag(msg,
19381                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
19382                 if (!reasons)
19383                         goto free_msg;
19384
19385                 if (wakeup->disconnect &&
19386                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
19387                         goto free_msg;
19388                 if (wakeup->magic_pkt &&
19389                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
19390                         goto free_msg;
19391                 if (wakeup->gtk_rekey_failure &&
19392                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
19393                         goto free_msg;
19394                 if (wakeup->eap_identity_req &&
19395                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
19396                         goto free_msg;
19397                 if (wakeup->four_way_handshake &&
19398                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
19399                         goto free_msg;
19400                 if (wakeup->rfkill_release &&
19401                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
19402                         goto free_msg;
19403
19404                 if (wakeup->pattern_idx >= 0 &&
19405                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
19406                                 wakeup->pattern_idx))
19407                         goto free_msg;
19408
19409                 if (wakeup->tcp_match &&
19410                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
19411                         goto free_msg;
19412
19413                 if (wakeup->tcp_connlost &&
19414                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
19415                         goto free_msg;
19416
19417                 if (wakeup->tcp_nomoretokens &&
19418                     nla_put_flag(msg,
19419                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
19420                         goto free_msg;
19421
19422                 if (wakeup->packet) {
19423                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
19424                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
19425
19426                         if (!wakeup->packet_80211) {
19427                                 pkt_attr =
19428                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
19429                                 len_attr =
19430                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
19431                         }
19432
19433                         if (wakeup->packet_len &&
19434                             nla_put_u32(msg, len_attr, wakeup->packet_len))
19435                                 goto free_msg;
19436
19437                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
19438                                     wakeup->packet))
19439                                 goto free_msg;
19440                 }
19441
19442                 if (wakeup->net_detect &&
19443                     cfg80211_net_detect_results(msg, wakeup))
19444                                 goto free_msg;
19445
19446                 nla_nest_end(msg, reasons);
19447         }
19448
19449         genlmsg_end(msg, hdr);
19450
19451         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19452                                 NL80211_MCGRP_MLME, gfp);
19453         return;
19454
19455  free_msg:
19456         nlmsg_free(msg);
19457 }
19458 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
19459 #endif
19460
19461 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
19462                                 enum nl80211_tdls_operation oper,
19463                                 u16 reason_code, gfp_t gfp)
19464 {
19465         struct wireless_dev *wdev = dev->ieee80211_ptr;
19466         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19467         struct sk_buff *msg;
19468         void *hdr;
19469
19470         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
19471                                          reason_code);
19472
19473         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19474         if (!msg)
19475                 return;
19476
19477         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
19478         if (!hdr) {
19479                 nlmsg_free(msg);
19480                 return;
19481         }
19482
19483         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19484             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19485             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
19486             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
19487             (reason_code > 0 &&
19488              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
19489                 goto nla_put_failure;
19490
19491         genlmsg_end(msg, hdr);
19492
19493         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19494                                 NL80211_MCGRP_MLME, gfp);
19495         return;
19496
19497  nla_put_failure:
19498         nlmsg_free(msg);
19499 }
19500 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
19501
19502 static int nl80211_netlink_notify(struct notifier_block * nb,
19503                                   unsigned long state,
19504                                   void *_notify)
19505 {
19506         struct netlink_notify *notify = _notify;
19507         struct cfg80211_registered_device *rdev;
19508         struct wireless_dev *wdev;
19509         struct cfg80211_beacon_registration *reg, *tmp;
19510
19511         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
19512                 return NOTIFY_DONE;
19513
19514         rcu_read_lock();
19515
19516         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
19517                 struct cfg80211_sched_scan_request *sched_scan_req;
19518
19519                 list_for_each_entry_rcu(sched_scan_req,
19520                                         &rdev->sched_scan_req_list,
19521                                         list) {
19522                         if (sched_scan_req->owner_nlportid == notify->portid) {
19523                                 sched_scan_req->nl_owner_dead = true;
19524                                 schedule_work(&rdev->sched_scan_stop_wk);
19525                         }
19526                 }
19527
19528                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
19529                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
19530
19531                         if (wdev->owner_nlportid == notify->portid) {
19532                                 wdev->nl_owner_dead = true;
19533                                 schedule_work(&rdev->destroy_work);
19534                         } else if (wdev->conn_owner_nlportid == notify->portid) {
19535                                 schedule_work(&wdev->disconnect_wk);
19536                         }
19537
19538                         cfg80211_release_pmsr(wdev, notify->portid);
19539                 }
19540
19541                 spin_lock_bh(&rdev->beacon_registrations_lock);
19542                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
19543                                          list) {
19544                         if (reg->nlportid == notify->portid) {
19545                                 list_del(&reg->list);
19546                                 kfree(reg);
19547                                 break;
19548                         }
19549                 }
19550                 spin_unlock_bh(&rdev->beacon_registrations_lock);
19551         }
19552
19553         rcu_read_unlock();
19554
19555         /*
19556          * It is possible that the user space process that is controlling the
19557          * indoor setting disappeared, so notify the regulatory core.
19558          */
19559         regulatory_netlink_notify(notify->portid);
19560         return NOTIFY_OK;
19561 }
19562
19563 static struct notifier_block nl80211_netlink_notifier = {
19564         .notifier_call = nl80211_netlink_notify,
19565 };
19566
19567 void cfg80211_ft_event(struct net_device *netdev,
19568                        struct cfg80211_ft_event_params *ft_event)
19569 {
19570         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19571         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19572         struct sk_buff *msg;
19573         void *hdr;
19574
19575         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
19576
19577         if (!ft_event->target_ap)
19578                 return;
19579
19580         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
19581                         GFP_KERNEL);
19582         if (!msg)
19583                 return;
19584
19585         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
19586         if (!hdr)
19587                 goto out;
19588
19589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19590             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19591             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
19592                 goto out;
19593
19594         if (ft_event->ies &&
19595             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
19596                 goto out;
19597         if (ft_event->ric_ies &&
19598             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
19599                     ft_event->ric_ies))
19600                 goto out;
19601
19602         genlmsg_end(msg, hdr);
19603
19604         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19605                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19606         return;
19607  out:
19608         nlmsg_free(msg);
19609 }
19610 EXPORT_SYMBOL(cfg80211_ft_event);
19611
19612 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
19613 {
19614         struct cfg80211_registered_device *rdev;
19615         struct sk_buff *msg;
19616         void *hdr;
19617         u32 nlportid;
19618
19619         rdev = wiphy_to_rdev(wdev->wiphy);
19620         if (!rdev->crit_proto_nlportid)
19621                 return;
19622
19623         nlportid = rdev->crit_proto_nlportid;
19624         rdev->crit_proto_nlportid = 0;
19625
19626         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19627         if (!msg)
19628                 return;
19629
19630         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
19631         if (!hdr)
19632                 goto nla_put_failure;
19633
19634         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19635             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19636                               NL80211_ATTR_PAD))
19637                 goto nla_put_failure;
19638
19639         genlmsg_end(msg, hdr);
19640
19641         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
19642         return;
19643
19644  nla_put_failure:
19645         nlmsg_free(msg);
19646 }
19647 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
19648
19649 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
19650 {
19651         struct wiphy *wiphy = wdev->wiphy;
19652         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19653         struct sk_buff *msg;
19654         void *hdr;
19655
19656         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
19657         if (!msg)
19658                 return;
19659
19660         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
19661         if (!hdr)
19662                 goto out;
19663
19664         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19665             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
19666             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
19667                               NL80211_ATTR_PAD))
19668                 goto out;
19669
19670         genlmsg_end(msg, hdr);
19671
19672         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
19673                                 NL80211_MCGRP_MLME, GFP_KERNEL);
19674         return;
19675  out:
19676         nlmsg_free(msg);
19677 }
19678
19679 int cfg80211_external_auth_request(struct net_device *dev,
19680                                    struct cfg80211_external_auth_params *params,
19681                                    gfp_t gfp)
19682 {
19683         struct wireless_dev *wdev = dev->ieee80211_ptr;
19684         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
19685         struct sk_buff *msg;
19686         void *hdr;
19687
19688         if (!wdev->conn_owner_nlportid)
19689                 return -EINVAL;
19690
19691         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19692         if (!msg)
19693                 return -ENOMEM;
19694
19695         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
19696         if (!hdr)
19697                 goto nla_put_failure;
19698
19699         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19700             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
19701             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
19702             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
19703                         params->action) ||
19704             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
19705             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
19706                     params->ssid.ssid))
19707                 goto nla_put_failure;
19708
19709         genlmsg_end(msg, hdr);
19710         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
19711                         wdev->conn_owner_nlportid);
19712         return 0;
19713
19714  nla_put_failure:
19715         nlmsg_free(msg);
19716         return -ENOBUFS;
19717 }
19718 EXPORT_SYMBOL(cfg80211_external_auth_request);
19719
19720 void cfg80211_update_owe_info_event(struct net_device *netdev,
19721                                     struct cfg80211_update_owe_info *owe_info,
19722                                     gfp_t gfp)
19723 {
19724         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
19725         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
19726         struct sk_buff *msg;
19727         void *hdr;
19728
19729         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
19730
19731         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
19732         if (!msg)
19733                 return;
19734
19735         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
19736         if (!hdr)
19737                 goto nla_put_failure;
19738
19739         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
19740             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
19741             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
19742                 goto nla_put_failure;
19743
19744         if (!owe_info->ie_len ||
19745             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
19746                 goto nla_put_failure;
19747
19748         genlmsg_end(msg, hdr);
19749
19750         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
19751                                 NL80211_MCGRP_MLME, gfp);
19752         return;
19753
19754 nla_put_failure:
19755         genlmsg_cancel(msg, hdr);
19756         nlmsg_free(msg);
19757 }
19758 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
19759
19760 /* initialisation/exit functions */
19761
19762 int __init nl80211_init(void)
19763 {
19764         int err;
19765
19766         err = genl_register_family(&nl80211_fam);
19767         if (err)
19768                 return err;
19769
19770         err = netlink_register_notifier(&nl80211_netlink_notifier);
19771         if (err)
19772                 goto err_out;
19773
19774         return 0;
19775  err_out:
19776         genl_unregister_family(&nl80211_fam);
19777         return err;
19778 }
19779
19780 void nl80211_exit(void)
19781 {
19782         netlink_unregister_notifier(&nl80211_netlink_notifier);
19783         genl_unregister_family(&nl80211_fam);
19784 }