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) 2018-2021 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 net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  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;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen, hdrlen;
 213         bool s1g_bcn;
 214
 215         if (len < offsetofend(typeof(*mgmt), frame_control))
 216                 goto err;
 217
 218         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 219         if (s1g_bcn) {
 220                 fixedlen = offsetof(struct ieee80211_ext,
 221                                     u.s1g_beacon.variable);
 222                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 223         } else {
 224                 fixedlen = offsetof(struct ieee80211_mgmt,
 225                                     u.beacon.variable);
 226                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 227         }
 228
 229         if (len < fixedlen)
 230                 goto err;
 231
 232         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 233                 goto err;
 234
 235         data += fixedlen;
 236         len -= fixedlen;
 237
 238         for_each_element(elem, data, len) {
 239                 /* nothing */
 240         }
 241
 242         if (for_each_element_completed(elem, data, len))
 243                 return 0;
 244
 245 err:
 246         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 247         return -EINVAL;
 248 }
 249
 250 static int validate_ie_attr(const struct nlattr *attr,
 251                             struct netlink_ext_ack *extack)
 252 {
 253         const u8 *data = nla_data(attr);
 254         unsigned int len = nla_len(attr);
 255         const struct element *elem;
 256
 257         for_each_element(elem, data, len) {
 258                 /* nothing */
 259         }
 260
 261         if (for_each_element_completed(elem, data, len))
 262                 return 0;
 263
 264         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 265         return -EINVAL;
 266 }
 267
 268 /* policy for the attributes */
 269 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 270
 271 static const struct nla_policy
 272 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 273         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 274         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 275                                         .len = U8_MAX },
 276         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 277                                              .len = U8_MAX },
 278 };
 279
 280 static const struct nla_policy
 281 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 282         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 283         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 284         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 285                 NLA_POLICY_MAX(NLA_U8, 15),
 286         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 287         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 288                 NLA_POLICY_MAX(NLA_U8, 15),
 289         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 290                 NLA_POLICY_MAX(NLA_U8, 31),
 291         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 292         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 293         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 294         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 295         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 296 };
 297
 298 static const struct nla_policy
 299 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 300         [NL80211_PMSR_TYPE_FTM] =
 301                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 302 };
 303
 304 static const struct nla_policy
 305 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 306         [NL80211_PMSR_REQ_ATTR_DATA] =
 307                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 308         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 309 };
 310
 311 static const struct nla_policy
 312 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 313         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 314         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 315         [NL80211_PMSR_PEER_ATTR_REQ] =
 316                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 317         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 318 };
 319
 320 static const struct nla_policy
 321 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 322         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 323         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 324         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 325         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 326         [NL80211_PMSR_ATTR_PEERS] =
 327                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 328 };
 329
 330 static const struct nla_policy
 331 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 332         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 333                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 334         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 335                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 336         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 337                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 338         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 339                 NLA_POLICY_EXACT_LEN(8),
 340         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 341                 NLA_POLICY_EXACT_LEN(8),
 342         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 343 };
 344
 345 static const struct nla_policy
 346 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 347         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 348         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 349         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 350 };
 351
 352 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 353         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 354                                     .len = NL80211_MAX_SUPP_RATES },
 355         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 356                                 .len = NL80211_MAX_SUPP_HT_RATES },
 357         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 358         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 359         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 360         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 361                                                    NL80211_RATE_INFO_HE_GI_0_8,
 362                                                    NL80211_RATE_INFO_HE_GI_3_2),
 363         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 364                                                    NL80211_RATE_INFO_HE_1XLTF,
 365                                                    NL80211_RATE_INFO_HE_4XLTF),
 366 };
 367
 368 static const struct nla_policy
 369 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 370         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 371         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 372         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 373         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 374         [NL80211_TID_CONFIG_ATTR_NOACK] =
 375                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 376         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 377         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 378         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 379                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 380         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 381                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 382         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 383                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 384         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 385                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 386         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 387                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 388 };
 389
 390 static const struct nla_policy
 391 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 392         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 393         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 394         NLA_POLICY_RANGE(NLA_BINARY,
 395                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 396                          IEEE80211_MAX_DATA_LEN),
 397 };
 398
 399 static const struct nla_policy
 400 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 401         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 402         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 403                                                        .len = IEEE80211_MAX_DATA_LEN }
 404 };
 405
 406 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 407         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 408         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 409         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 410                                       .len = 20-1 },
 411         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 412
 413         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 414         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 415         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 416                                                 NL80211_EDMG_CHANNELS_MIN,
 417                                                 NL80211_EDMG_CHANNELS_MAX),
 418         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 419                                                 NL80211_EDMG_BW_CONFIG_MIN,
 420                                                 NL80211_EDMG_BW_CONFIG_MAX),
 421
 422         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 423         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 424         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 425         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 426
 427         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 428         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 429         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 430         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 431         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 432         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 433
 434         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 435         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 436         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 437
 438         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 439         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 440
 441         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 442         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 443                                     .len = WLAN_MAX_KEY_LEN },
 444         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 445         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 446         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 447         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 448         [NL80211_ATTR_KEY_TYPE] =
 449                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 450
 451         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 452         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 453         [NL80211_ATTR_BEACON_HEAD] =
 454                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 455                                        IEEE80211_MAX_DATA_LEN),
 456         [NL80211_ATTR_BEACON_TAIL] =
 457                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 458                                        IEEE80211_MAX_DATA_LEN),
 459         [NL80211_ATTR_STA_AID] =
 460                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 461         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 462         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 463         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 464                                                .len = NL80211_MAX_SUPP_RATES },
 465         [NL80211_ATTR_STA_PLINK_ACTION] =
 466                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 467         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 468                 NLA_POLICY_RANGE(NLA_U8,
 469                                  NL80211_TX_POWER_AUTOMATIC,
 470                                  NL80211_TX_POWER_FIXED),
 471         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 472         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 473         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 474         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 475                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 476         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 477
 478         /* allow 3 for NUL-termination, we used to declare this NLA_STRING */
 479         [NL80211_ATTR_REG_ALPHA2] = NLA_POLICY_RANGE(NLA_BINARY, 2, 3),
 480         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 481
 482         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 483         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 484         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 485         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 486                                            .len = NL80211_MAX_SUPP_RATES },
 487         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 488
 489         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 490         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 491
 492         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 493
 494         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 495         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 496                                                    validate_ie_attr,
 497                                                    IEEE80211_MAX_DATA_LEN),
 498         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 499         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 500
 501         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 502                                 .len = IEEE80211_MAX_SSID_LEN },
 503         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 504         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 505         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 506         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 507         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 508                                                   NL80211_MFP_NO,
 509                                                   NL80211_MFP_OPTIONAL),
 510         [NL80211_ATTR_STA_FLAGS2] = {
 511                 .len = sizeof(struct nl80211_sta_flag_update),
 512         },
 513         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 514         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 515         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 516         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 517         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 519         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 520         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 521         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 522         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 523         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 524         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 525         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 526         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 527         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 528                                  .len = IEEE80211_MAX_DATA_LEN },
 529         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 530         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 531                                                    NL80211_PS_DISABLED,
 532                                                    NL80211_PS_ENABLED),
 533         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 534         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 535         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 536         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 537         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 538         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 539         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 540         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 541         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 542         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 543         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 544         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 545         [NL80211_ATTR_STA_PLINK_STATE] =
 546                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 547         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 548         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 549         [NL80211_ATTR_MESH_PEER_AID] =
 550                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 551         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 552         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 553         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 554         [NL80211_ATTR_HIDDEN_SSID] =
 555                 NLA_POLICY_RANGE(NLA_U32,
 556                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 557                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 558         [NL80211_ATTR_IE_PROBE_RESP] =
 559                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 560                                        IEEE80211_MAX_DATA_LEN),
 561         [NL80211_ATTR_IE_ASSOC_RESP] =
 562                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 563                                        IEEE80211_MAX_DATA_LEN),
 564         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 565         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 566         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 568         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 569         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 570         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 571         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 575                                       .len = IEEE80211_MAX_DATA_LEN },
 576         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 577         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 578         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 579                 .len = NL80211_HT_CAPABILITY_LEN
 580         },
 581         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 582         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 583         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 584         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 585         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 586
 587         /* need to include at least Auth Transaction and Status Code */
 588         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 589
 590         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 591         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 592         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 593         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 594         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 595                 NLA_POLICY_RANGE(NLA_U32,
 596                                  NL80211_MESH_POWER_UNKNOWN + 1,
 597                                  NL80211_MESH_POWER_MAX),
 598         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 599         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 600         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 601         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 602         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 603         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 604         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 605                 .len = NL80211_VHT_CAPABILITY_LEN,
 606         },
 607         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 608         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 609                                   .len = IEEE80211_MAX_DATA_LEN },
 610         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 611         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 612                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 613         [NL80211_ATTR_PEER_AID] =
 614                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 615         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 616         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 617         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 618         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 619         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 620         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 621         /*
 622          * The value of the Length field of the Supported Operating
 623          * Classes element is between 2 and 253.
 624          */
 625         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 626                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 627         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 628         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 629         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 630         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 631         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 632         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 633                                                   IEEE80211_QOS_MAP_LEN_MIN,
 634                                                   IEEE80211_QOS_MAP_LEN_MAX),
 635         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 636         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 637         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 638         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 639         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 640         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 641         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 642         [NL80211_ATTR_USER_PRIO] =
 643                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 644         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 645         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 646         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 647         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 648         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 649         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 650         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 651         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 652         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 653         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 654         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 655                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 656         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 657                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 658         },
 659         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 660         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 661         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 662         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 663         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 664                                     .len = FILS_MAX_KEK_LEN },
 665         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 666         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 667         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 668         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 669         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 670                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 671         },
 672         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 673         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 674                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 675         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 676                                           .len = FILS_ERP_MAX_REALM_LEN },
 677         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 678         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 679                                         .len = FILS_ERP_MAX_RRK_LEN },
 680         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 681         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 682         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 683         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 684         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 685
 686         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 687         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 688         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 689         [NL80211_ATTR_HE_CAPABILITY] =
 690                 NLA_POLICY_RANGE(NLA_BINARY,
 691                                  NL80211_HE_MIN_CAPABILITY_LEN,
 692                                  NL80211_HE_MAX_CAPABILITY_LEN),
 693         [NL80211_ATTR_FTM_RESPONDER] =
 694                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 695         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 696         [NL80211_ATTR_PEER_MEASUREMENTS] =
 697                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 698         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 699         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 700                                         .len = SAE_PASSWORD_MAX_LEN },
 701         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 702         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 703         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 704         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 705         [NL80211_ATTR_TID_CONFIG] =
 706                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 707         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 708         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 709         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 710         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 712         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 713         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 714                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 715         [NL80211_ATTR_FILS_DISCOVERY] =
 716                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 717         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 718                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 719         [NL80211_ATTR_S1G_CAPABILITY] =
 720                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 721         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 722                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 723 };
 724
 725 /* policy for the key attributes */
 726 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 727         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 728         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 729         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 730         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 731         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 732         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 733         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 734         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 735         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 736 };
 737
 738 /* policy for the key default flags */
 739 static const struct nla_policy
 740 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 741         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 742         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 743 };
 744
 745 #ifdef CONFIG_PM
 746 /* policy for WoWLAN attributes */
 747 static const struct nla_policy
 748 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 749         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 750         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 751         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 752         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 753         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 754         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 755         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 756         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 757         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 758         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 759 };
 760
 761 static const struct nla_policy
 762 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 763         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 764         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 765         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 766         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 767         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 768         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 769         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 770                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 771         },
 772         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 773                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 774         },
 775         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 776         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 777         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 778 };
 779 #endif /* CONFIG_PM */
 780
 781 /* policy for coalesce rule attributes */
 782 static const struct nla_policy
 783 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 784         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 785         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 786                 NLA_POLICY_RANGE(NLA_U32,
 787                                  NL80211_COALESCE_CONDITION_MATCH,
 788                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 789         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 790 };
 791
 792 /* policy for GTK rekey offload attributes */
 793 static const struct nla_policy
 794 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 795         [NL80211_REKEY_DATA_KEK] = {
 796                 .type = NLA_BINARY,
 797                 .len = NL80211_KEK_EXT_LEN
 798         },
 799         [NL80211_REKEY_DATA_KCK] = {
 800                 .type = NLA_BINARY,
 801                 .len = NL80211_KCK_EXT_LEN
 802         },
 803         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 804         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 805 };
 806
 807 static const struct nla_policy
 808 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 809         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 810         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 811         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 812         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 813 };
 814
 815 static const struct nla_policy
 816 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 817         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 818                                                  .len = IEEE80211_MAX_SSID_LEN },
 819         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 820         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 821         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 822                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 823 };
 824
 825 static const struct nla_policy
 826 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 827         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 828         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 829 };
 830
 831 static const struct nla_policy
 832 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 833         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 834         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 835         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 836                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 837         },
 838 };
 839
 840 /* policy for NAN function attributes */
 841 static const struct nla_policy
 842 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 843         [NL80211_NAN_FUNC_TYPE] =
 844                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 845         [NL80211_NAN_FUNC_SERVICE_ID] = {
 846                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 847         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 848         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 849         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 850         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 851         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 852         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 853         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 854         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 855         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 856                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 857         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 858         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 859         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 860         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 861         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 862 };
 863
 864 /* policy for Service Response Filter attributes */
 865 static const struct nla_policy
 866 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 867         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 868         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 869                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 870         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 871         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 872 };
 873
 874 /* policy for packet pattern attributes */
 875 static const struct nla_policy
 876 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 877         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 878         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 879         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 880 };
 881
 882 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 883                               struct cfg80211_registered_device **rdev,
 884                               struct wireless_dev **wdev)
 885 {
 886         int err;
 887
 888         if (!cb->args[0]) {
 889                 struct nlattr **attrbuf;
 890
 891                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 892                                   GFP_KERNEL);
 893                 if (!attrbuf)
 894                         return -ENOMEM;
 895
 896                 err = nlmsg_parse_deprecated(cb->nlh,
 897                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 898                                              attrbuf, nl80211_fam.maxattr,
 899                                              nl80211_policy, NULL);
 900                 if (err) {
 901                         kfree(attrbuf);
 902                         return err;
 903                 }
 904
 905                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 906                                                    attrbuf);
 907                 kfree(attrbuf);
 908                 if (IS_ERR(*wdev))
 909                         return PTR_ERR(*wdev);
 910                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 911                 /* 0 is the first index - add 1 to parse only once */
 912                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 913                 cb->args[1] = (*wdev)->identifier;
 914         } else {
 915                 /* subtract the 1 again here */
 916                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 917                 struct wireless_dev *tmp;
 918
 919                 if (!wiphy)
 920                         return -ENODEV;
 921                 *rdev = wiphy_to_rdev(wiphy);
 922                 *wdev = NULL;
 923
 924                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 925                         if (tmp->identifier == cb->args[1]) {
 926                                 *wdev = tmp;
 927                                 break;
 928                         }
 929                 }
 930
 931                 if (!*wdev)
 932                         return -ENODEV;
 933         }
 934
 935         return 0;
 936 }
 937
 938 /* message building helper */
 939 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 940                      int flags, u8 cmd)
 941 {
 942         /* since there is no private header just add the generic one */
 943         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 944 }
 945
 946 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 947                                      const struct ieee80211_reg_rule *rule)
 948 {
 949         int j;
 950         struct nlattr *nl_wmm_rules =
 951                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 952
 953         if (!nl_wmm_rules)
 954                 goto nla_put_failure;
 955
 956         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 957                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 958
 959                 if (!nl_wmm_rule)
 960                         goto nla_put_failure;
 961
 962                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 963                                 rule->wmm_rule.client[j].cw_min) ||
 964                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 965                                 rule->wmm_rule.client[j].cw_max) ||
 966                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 967                                rule->wmm_rule.client[j].aifsn) ||
 968                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 969                                 rule->wmm_rule.client[j].cot))
 970                         goto nla_put_failure;
 971
 972                 nla_nest_end(msg, nl_wmm_rule);
 973         }
 974         nla_nest_end(msg, nl_wmm_rules);
 975
 976         return 0;
 977
 978 nla_put_failure:
 979         return -ENOBUFS;
 980 }
 981
 982 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 983                                    struct ieee80211_channel *chan,
 984                                    bool large)
 985 {
 986         /* Some channels must be completely excluded from the
 987          * list to protect old user-space tools from breaking
 988          */
 989         if (!large && chan->flags &
 990             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 991                 return 0;
 992         if (!large && chan->freq_offset)
 993                 return 0;
 994
 995         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 996                         chan->center_freq))
 997                 goto nla_put_failure;
 998
 999         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1000                 goto nla_put_failure;
1001
1002         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1003             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1004                 goto nla_put_failure;
1005         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1006                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1007                         goto nla_put_failure;
1008                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1009                         goto nla_put_failure;
1010         }
1011         if (chan->flags & IEEE80211_CHAN_RADAR) {
1012                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1013                         goto nla_put_failure;
1014                 if (large) {
1015                         u32 time;
1016
1017                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1018
1019                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1020                                         chan->dfs_state))
1021                                 goto nla_put_failure;
1022                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1023                                         time))
1024                                 goto nla_put_failure;
1025                         if (nla_put_u32(msg,
1026                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1027                                         chan->dfs_cac_ms))
1028                                 goto nla_put_failure;
1029                 }
1030         }
1031
1032         if (large) {
1033                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1034                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1035                         goto nla_put_failure;
1036                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1037                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1038                         goto nla_put_failure;
1039                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1040                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1041                         goto nla_put_failure;
1042                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1043                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1044                         goto nla_put_failure;
1045                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1046                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1047                         goto nla_put_failure;
1048                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1049                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1050                         goto nla_put_failure;
1051                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1052                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1053                         goto nla_put_failure;
1054                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1055                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1056                         goto nla_put_failure;
1057                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1058                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1059                         goto nla_put_failure;
1060                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1061                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1062                         goto nla_put_failure;
1063                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1064                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1065                         goto nla_put_failure;
1066                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1067                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1068                         goto nla_put_failure;
1069                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1070                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1071                         goto nla_put_failure;
1072                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1073                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1074                         goto nla_put_failure;
1075         }
1076
1077         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1078                         DBM_TO_MBM(chan->max_power)))
1079                 goto nla_put_failure;
1080
1081         if (large) {
1082                 const struct ieee80211_reg_rule *rule =
1083                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1084
1085                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1086                         if (nl80211_msg_put_wmm_rules(msg, rule))
1087                                 goto nla_put_failure;
1088                 }
1089         }
1090
1091         return 0;
1092
1093  nla_put_failure:
1094         return -ENOBUFS;
1095 }
1096
1097 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1098                                   struct cfg80211_txq_stats *txqstats,
1099                                   int attrtype)
1100 {
1101         struct nlattr *txqattr;
1102
1103 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1104         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1105             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1106                 return false;                                             \
1107         } while (0)
1108
1109         txqattr = nla_nest_start_noflag(msg, attrtype);
1110         if (!txqattr)
1111                 return false;
1112
1113         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1114         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1115         PUT_TXQVAL_U32(FLOWS, flows);
1116         PUT_TXQVAL_U32(DROPS, drops);
1117         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1118         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1119         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1120         PUT_TXQVAL_U32(COLLISIONS, collisions);
1121         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1122         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1123         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1124         nla_nest_end(msg, txqattr);
1125
1126 #undef PUT_TXQVAL_U32
1127         return true;
1128 }
1129
1130 /* netlink command implementations */
1131
1132 struct key_parse {
1133         struct key_params p;
1134         int idx;
1135         int type;
1136         bool def, defmgmt, defbeacon;
1137         bool def_uni, def_multi;
1138 };
1139
1140 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1141                                  struct key_parse *k)
1142 {
1143         struct nlattr *tb[NL80211_KEY_MAX + 1];
1144         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1145                                               nl80211_key_policy,
1146                                               info->extack);
1147         if (err)
1148                 return err;
1149
1150         k->def = !!tb[NL80211_KEY_DEFAULT];
1151         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1152         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1153
1154         if (k->def) {
1155                 k->def_uni = true;
1156                 k->def_multi = true;
1157         }
1158         if (k->defmgmt || k->defbeacon)
1159                 k->def_multi = true;
1160
1161         if (tb[NL80211_KEY_IDX])
1162                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1163
1164         if (tb[NL80211_KEY_DATA]) {
1165                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1166                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1167         }
1168
1169         if (tb[NL80211_KEY_SEQ]) {
1170                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1171                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1172         }
1173
1174         if (tb[NL80211_KEY_CIPHER])
1175                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1176
1177         if (tb[NL80211_KEY_TYPE])
1178                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1179
1180         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1181                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1182
1183                 err = nla_parse_nested_deprecated(kdt,
1184                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1185                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1186                                                   nl80211_key_default_policy,
1187                                                   info->extack);
1188                 if (err)
1189                         return err;
1190
1191                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1192                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1193         }
1194
1195         if (tb[NL80211_KEY_MODE])
1196                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1197
1198         return 0;
1199 }
1200
1201 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1202 {
1203         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1204                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1205                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1206         }
1207
1208         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1209                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1210                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1211         }
1212
1213         if (info->attrs[NL80211_ATTR_KEY_IDX])
1214                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1215
1216         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1217                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1218
1219         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1220         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1221
1222         if (k->def) {
1223                 k->def_uni = true;
1224                 k->def_multi = true;
1225         }
1226         if (k->defmgmt)
1227                 k->def_multi = true;
1228
1229         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1230                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1231
1232         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1233                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1234                 int err = nla_parse_nested_deprecated(kdt,
1235                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1236                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1237                                                       nl80211_key_default_policy,
1238                                                       info->extack);
1239                 if (err)
1240                         return err;
1241
1242                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1243                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1244         }
1245
1246         return 0;
1247 }
1248
1249 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1250 {
1251         int err;
1252
1253         memset(k, 0, sizeof(*k));
1254         k->idx = -1;
1255         k->type = -1;
1256
1257         if (info->attrs[NL80211_ATTR_KEY])
1258                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1259         else
1260                 err = nl80211_parse_key_old(info, k);
1261
1262         if (err)
1263                 return err;
1264
1265         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1266             (k->defbeacon ? 1 : 0) > 1) {
1267                 GENL_SET_ERR_MSG(info,
1268                                  "key with multiple default flags is invalid");
1269                 return -EINVAL;
1270         }
1271
1272         if (k->defmgmt || k->defbeacon) {
1273                 if (k->def_uni || !k->def_multi) {
1274                         GENL_SET_ERR_MSG(info,
1275                                          "defmgmt/defbeacon key must be mcast");
1276                         return -EINVAL;
1277                 }
1278         }
1279
1280         if (k->idx != -1) {
1281                 if (k->defmgmt) {
1282                         if (k->idx < 4 || k->idx > 5) {
1283                                 GENL_SET_ERR_MSG(info,
1284                                                  "defmgmt key idx not 4 or 5");
1285                                 return -EINVAL;
1286                         }
1287                 } else if (k->defbeacon) {
1288                         if (k->idx < 6 || k->idx > 7) {
1289                                 GENL_SET_ERR_MSG(info,
1290                                                  "defbeacon key idx not 6 or 7");
1291                                 return -EINVAL;
1292                         }
1293                 } else if (k->def) {
1294                         if (k->idx < 0 || k->idx > 3) {
1295                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1296                                 return -EINVAL;
1297                         }
1298                 } else {
1299                         if (k->idx < 0 || k->idx > 7) {
1300                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1301                                 return -EINVAL;
1302                         }
1303                 }
1304         }
1305
1306         return 0;
1307 }
1308
1309 static struct cfg80211_cached_keys *
1310 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1311                        struct genl_info *info, bool *no_ht)
1312 {
1313         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1314         struct key_parse parse;
1315         struct nlattr *key;
1316         struct cfg80211_cached_keys *result;
1317         int rem, err, def = 0;
1318         bool have_key = false;
1319
1320         nla_for_each_nested(key, keys, rem) {
1321                 have_key = true;
1322                 break;
1323         }
1324
1325         if (!have_key)
1326                 return NULL;
1327
1328         result = kzalloc(sizeof(*result), GFP_KERNEL);
1329         if (!result)
1330                 return ERR_PTR(-ENOMEM);
1331
1332         result->def = -1;
1333
1334         nla_for_each_nested(key, keys, rem) {
1335                 memset(&parse, 0, sizeof(parse));
1336                 parse.idx = -1;
1337
1338                 err = nl80211_parse_key_new(info, key, &parse);
1339                 if (err)
1340                         goto error;
1341                 err = -EINVAL;
1342                 if (!parse.p.key)
1343                         goto error;
1344                 if (parse.idx < 0 || parse.idx > 3) {
1345                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1346                         goto error;
1347                 }
1348                 if (parse.def) {
1349                         if (def) {
1350                                 GENL_SET_ERR_MSG(info,
1351                                                  "only one key can be default");
1352                                 goto error;
1353                         }
1354                         def = 1;
1355                         result->def = parse.idx;
1356                         if (!parse.def_uni || !parse.def_multi)
1357                                 goto error;
1358                 } else if (parse.defmgmt)
1359                         goto error;
1360                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1361                                                      parse.idx, false, NULL);
1362                 if (err)
1363                         goto error;
1364                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1365                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1366                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1367                         err = -EINVAL;
1368                         goto error;
1369                 }
1370                 result->params[parse.idx].cipher = parse.p.cipher;
1371                 result->params[parse.idx].key_len = parse.p.key_len;
1372                 result->params[parse.idx].key = result->data[parse.idx];
1373                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1374
1375                 /* must be WEP key if we got here */
1376                 if (no_ht)
1377                         *no_ht = true;
1378         }
1379
1380         if (result->def < 0) {
1381                 err = -EINVAL;
1382                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1383                 goto error;
1384         }
1385
1386         return result;
1387  error:
1388         kfree(result);
1389         return ERR_PTR(err);
1390 }
1391
1392 static int nl80211_key_allowed(struct wireless_dev *wdev)
1393 {
1394         ASSERT_WDEV_LOCK(wdev);
1395
1396         switch (wdev->iftype) {
1397         case NL80211_IFTYPE_AP:
1398         case NL80211_IFTYPE_AP_VLAN:
1399         case NL80211_IFTYPE_P2P_GO:
1400         case NL80211_IFTYPE_MESH_POINT:
1401                 break;
1402         case NL80211_IFTYPE_ADHOC:
1403         case NL80211_IFTYPE_STATION:
1404         case NL80211_IFTYPE_P2P_CLIENT:
1405                 if (!wdev->current_bss)
1406                         return -ENOLINK;
1407                 break;
1408         case NL80211_IFTYPE_UNSPECIFIED:
1409         case NL80211_IFTYPE_OCB:
1410         case NL80211_IFTYPE_MONITOR:
1411         case NL80211_IFTYPE_NAN:
1412         case NL80211_IFTYPE_P2P_DEVICE:
1413         case NL80211_IFTYPE_WDS:
1414         case NUM_NL80211_IFTYPES:
1415                 return -EINVAL;
1416         }
1417
1418         return 0;
1419 }
1420
1421 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1422                                                         u32 freq)
1423 {
1424         struct ieee80211_channel *chan;
1425
1426         chan = ieee80211_get_channel_khz(wiphy, freq);
1427         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1428                 return NULL;
1429         return chan;
1430 }
1431
1432 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1433 {
1434         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1435         int i;
1436
1437         if (!nl_modes)
1438                 goto nla_put_failure;
1439
1440         i = 0;
1441         while (ifmodes) {
1442                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1443                         goto nla_put_failure;
1444                 ifmodes >>= 1;
1445                 i++;
1446         }
1447
1448         nla_nest_end(msg, nl_modes);
1449         return 0;
1450
1451 nla_put_failure:
1452         return -ENOBUFS;
1453 }
1454
1455 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1456                                           struct sk_buff *msg,
1457                                           bool large)
1458 {
1459         struct nlattr *nl_combis;
1460         int i, j;
1461
1462         nl_combis = nla_nest_start_noflag(msg,
1463                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1464         if (!nl_combis)
1465                 goto nla_put_failure;
1466
1467         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1468                 const struct ieee80211_iface_combination *c;
1469                 struct nlattr *nl_combi, *nl_limits;
1470
1471                 c = &wiphy->iface_combinations[i];
1472
1473                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1474                 if (!nl_combi)
1475                         goto nla_put_failure;
1476
1477                 nl_limits = nla_nest_start_noflag(msg,
1478                                                   NL80211_IFACE_COMB_LIMITS);
1479                 if (!nl_limits)
1480                         goto nla_put_failure;
1481
1482                 for (j = 0; j < c->n_limits; j++) {
1483                         struct nlattr *nl_limit;
1484
1485                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1486                         if (!nl_limit)
1487                                 goto nla_put_failure;
1488                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1489                                         c->limits[j].max))
1490                                 goto nla_put_failure;
1491                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1492                                                 c->limits[j].types))
1493                                 goto nla_put_failure;
1494                         nla_nest_end(msg, nl_limit);
1495                 }
1496
1497                 nla_nest_end(msg, nl_limits);
1498
1499                 if (c->beacon_int_infra_match &&
1500                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1501                         goto nla_put_failure;
1502                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1503                                 c->num_different_channels) ||
1504                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1505                                 c->max_interfaces))
1506                         goto nla_put_failure;
1507                 if (large &&
1508                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1509                                 c->radar_detect_widths) ||
1510                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1511                                 c->radar_detect_regions)))
1512                         goto nla_put_failure;
1513                 if (c->beacon_int_min_gcd &&
1514                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1515                                 c->beacon_int_min_gcd))
1516                         goto nla_put_failure;
1517
1518                 nla_nest_end(msg, nl_combi);
1519         }
1520
1521         nla_nest_end(msg, nl_combis);
1522
1523         return 0;
1524 nla_put_failure:
1525         return -ENOBUFS;
1526 }
1527
1528 #ifdef CONFIG_PM
1529 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1530                                         struct sk_buff *msg)
1531 {
1532         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1533         struct nlattr *nl_tcp;
1534
1535         if (!tcp)
1536                 return 0;
1537
1538         nl_tcp = nla_nest_start_noflag(msg,
1539                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1540         if (!nl_tcp)
1541                 return -ENOBUFS;
1542
1543         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1544                         tcp->data_payload_max))
1545                 return -ENOBUFS;
1546
1547         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1548                         tcp->data_payload_max))
1549                 return -ENOBUFS;
1550
1551         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1552                 return -ENOBUFS;
1553
1554         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1555                                 sizeof(*tcp->tok), tcp->tok))
1556                 return -ENOBUFS;
1557
1558         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1559                         tcp->data_interval_max))
1560                 return -ENOBUFS;
1561
1562         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1563                         tcp->wake_payload_max))
1564                 return -ENOBUFS;
1565
1566         nla_nest_end(msg, nl_tcp);
1567         return 0;
1568 }
1569
1570 static int nl80211_send_wowlan(struct sk_buff *msg,
1571                                struct cfg80211_registered_device *rdev,
1572                                bool large)
1573 {
1574         struct nlattr *nl_wowlan;
1575
1576         if (!rdev->wiphy.wowlan)
1577                 return 0;
1578
1579         nl_wowlan = nla_nest_start_noflag(msg,
1580                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1581         if (!nl_wowlan)
1582                 return -ENOBUFS;
1583
1584         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1585              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1586             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1587              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1588             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1589              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1590             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1591              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1592             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1593              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1594             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1595              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1596             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1597              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1598             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1599              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1600                 return -ENOBUFS;
1601
1602         if (rdev->wiphy.wowlan->n_patterns) {
1603                 struct nl80211_pattern_support pat = {
1604                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1605                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1606                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1607                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1608                 };
1609
1610                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1611                             sizeof(pat), &pat))
1612                         return -ENOBUFS;
1613         }
1614
1615         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1616             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1617                         rdev->wiphy.wowlan->max_nd_match_sets))
1618                 return -ENOBUFS;
1619
1620         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1621                 return -ENOBUFS;
1622
1623         nla_nest_end(msg, nl_wowlan);
1624
1625         return 0;
1626 }
1627 #endif
1628
1629 static int nl80211_send_coalesce(struct sk_buff *msg,
1630                                  struct cfg80211_registered_device *rdev)
1631 {
1632         struct nl80211_coalesce_rule_support rule;
1633
1634         if (!rdev->wiphy.coalesce)
1635                 return 0;
1636
1637         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1638         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1639         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1640         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1641         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1642         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1643
1644         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1645                 return -ENOBUFS;
1646
1647         return 0;
1648 }
1649
1650 static int
1651 nl80211_send_iftype_data(struct sk_buff *msg,
1652                          const struct ieee80211_supported_band *sband,
1653                          const struct ieee80211_sband_iftype_data *iftdata)
1654 {
1655         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1656
1657         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1658                                 iftdata->types_mask))
1659                 return -ENOBUFS;
1660
1661         if (he_cap->has_he) {
1662                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1663                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1664                             he_cap->he_cap_elem.mac_cap_info) ||
1665                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1666                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1667                             he_cap->he_cap_elem.phy_cap_info) ||
1668                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1669                             sizeof(he_cap->he_mcs_nss_supp),
1670                             &he_cap->he_mcs_nss_supp) ||
1671                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1672                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1673                         return -ENOBUFS;
1674         }
1675
1676         if (sband->band == NL80211_BAND_6GHZ &&
1677             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1678                     sizeof(iftdata->he_6ghz_capa),
1679                     &iftdata->he_6ghz_capa))
1680                 return -ENOBUFS;
1681
1682         return 0;
1683 }
1684
1685 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1686                                       struct ieee80211_supported_band *sband,
1687                                       bool large)
1688 {
1689         struct nlattr *nl_rates, *nl_rate;
1690         struct ieee80211_rate *rate;
1691         int i;
1692
1693         /* add HT info */
1694         if (sband->ht_cap.ht_supported &&
1695             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1696                      sizeof(sband->ht_cap.mcs),
1697                      &sband->ht_cap.mcs) ||
1698              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1699                          sband->ht_cap.cap) ||
1700              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1701                         sband->ht_cap.ampdu_factor) ||
1702              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1703                         sband->ht_cap.ampdu_density)))
1704                 return -ENOBUFS;
1705
1706         /* add VHT info */
1707         if (sband->vht_cap.vht_supported &&
1708             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1709                      sizeof(sband->vht_cap.vht_mcs),
1710                      &sband->vht_cap.vht_mcs) ||
1711              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1712                          sband->vht_cap.cap)))
1713                 return -ENOBUFS;
1714
1715         if (large && sband->n_iftype_data) {
1716                 struct nlattr *nl_iftype_data =
1717                         nla_nest_start_noflag(msg,
1718                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1719                 int err;
1720
1721                 if (!nl_iftype_data)
1722                         return -ENOBUFS;
1723
1724                 for (i = 0; i < sband->n_iftype_data; i++) {
1725                         struct nlattr *iftdata;
1726
1727                         iftdata = nla_nest_start_noflag(msg, i + 1);
1728                         if (!iftdata)
1729                                 return -ENOBUFS;
1730
1731                         err = nl80211_send_iftype_data(msg, sband,
1732                                                        &sband->iftype_data[i]);
1733                         if (err)
1734                                 return err;
1735
1736                         nla_nest_end(msg, iftdata);
1737                 }
1738
1739                 nla_nest_end(msg, nl_iftype_data);
1740         }
1741
1742         /* add EDMG info */
1743         if (large && sband->edmg_cap.channels &&
1744             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1745                        sband->edmg_cap.channels) ||
1746             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1747                        sband->edmg_cap.bw_config)))
1748
1749                 return -ENOBUFS;
1750
1751         /* add bitrates */
1752         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1753         if (!nl_rates)
1754                 return -ENOBUFS;
1755
1756         for (i = 0; i < sband->n_bitrates; i++) {
1757                 nl_rate = nla_nest_start_noflag(msg, i);
1758                 if (!nl_rate)
1759                         return -ENOBUFS;
1760
1761                 rate = &sband->bitrates[i];
1762                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1763                                 rate->bitrate))
1764                         return -ENOBUFS;
1765                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1766                     nla_put_flag(msg,
1767                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1768                         return -ENOBUFS;
1769
1770                 nla_nest_end(msg, nl_rate);
1771         }
1772
1773         nla_nest_end(msg, nl_rates);
1774
1775         return 0;
1776 }
1777
1778 static int
1779 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1780                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1781 {
1782         u16 stypes;
1783         struct nlattr *nl_ftypes, *nl_ifs;
1784         enum nl80211_iftype ift;
1785         int i;
1786
1787         if (!mgmt_stypes)
1788                 return 0;
1789
1790         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1791         if (!nl_ifs)
1792                 return -ENOBUFS;
1793
1794         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1795                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1796                 if (!nl_ftypes)
1797                         return -ENOBUFS;
1798                 i = 0;
1799                 stypes = mgmt_stypes[ift].tx;
1800                 while (stypes) {
1801                         if ((stypes & 1) &&
1802                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1803                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1804                                 return -ENOBUFS;
1805                         stypes >>= 1;
1806                         i++;
1807                 }
1808                 nla_nest_end(msg, nl_ftypes);
1809         }
1810
1811         nla_nest_end(msg, nl_ifs);
1812
1813         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1814         if (!nl_ifs)
1815                 return -ENOBUFS;
1816
1817         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1818                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1819                 if (!nl_ftypes)
1820                         return -ENOBUFS;
1821                 i = 0;
1822                 stypes = mgmt_stypes[ift].rx;
1823                 while (stypes) {
1824                         if ((stypes & 1) &&
1825                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1826                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1827                                 return -ENOBUFS;
1828                         stypes >>= 1;
1829                         i++;
1830                 }
1831                 nla_nest_end(msg, nl_ftypes);
1832         }
1833         nla_nest_end(msg, nl_ifs);
1834
1835         return 0;
1836 }
1837
1838 #define CMD(op, n)                                                      \
1839          do {                                                           \
1840                 if (rdev->ops->op) {                                    \
1841                         i++;                                            \
1842                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1843                                 goto nla_put_failure;                   \
1844                 }                                                       \
1845         } while (0)
1846
1847 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1848                                         struct sk_buff *msg)
1849 {
1850         int i = 0;
1851
1852         /*
1853          * do *NOT* add anything into this function, new things need to be
1854          * advertised only to new versions of userspace that can deal with
1855          * the split (and they can't possibly care about new features...
1856          */
1857         CMD(add_virtual_intf, NEW_INTERFACE);
1858         CMD(change_virtual_intf, SET_INTERFACE);
1859         CMD(add_key, NEW_KEY);
1860         CMD(start_ap, START_AP);
1861         CMD(add_station, NEW_STATION);
1862         CMD(add_mpath, NEW_MPATH);
1863         CMD(update_mesh_config, SET_MESH_CONFIG);
1864         CMD(change_bss, SET_BSS);
1865         CMD(auth, AUTHENTICATE);
1866         CMD(assoc, ASSOCIATE);
1867         CMD(deauth, DEAUTHENTICATE);
1868         CMD(disassoc, DISASSOCIATE);
1869         CMD(join_ibss, JOIN_IBSS);
1870         CMD(join_mesh, JOIN_MESH);
1871         CMD(set_pmksa, SET_PMKSA);
1872         CMD(del_pmksa, DEL_PMKSA);
1873         CMD(flush_pmksa, FLUSH_PMKSA);
1874         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1875                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1876         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1877         CMD(mgmt_tx, FRAME);
1878         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1879         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1880                 i++;
1881                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1882                         goto nla_put_failure;
1883         }
1884         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1885             rdev->ops->join_mesh) {
1886                 i++;
1887                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1888                         goto nla_put_failure;
1889         }
1890         CMD(set_wds_peer, SET_WDS_PEER);
1891         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1892                 CMD(tdls_mgmt, TDLS_MGMT);
1893                 CMD(tdls_oper, TDLS_OPER);
1894         }
1895         if (rdev->wiphy.max_sched_scan_reqs)
1896                 CMD(sched_scan_start, START_SCHED_SCAN);
1897         CMD(probe_client, PROBE_CLIENT);
1898         CMD(set_noack_map, SET_NOACK_MAP);
1899         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1900                 i++;
1901                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1902                         goto nla_put_failure;
1903         }
1904         CMD(start_p2p_device, START_P2P_DEVICE);
1905         CMD(set_mcast_rate, SET_MCAST_RATE);
1906 #ifdef CONFIG_NL80211_TESTMODE
1907         CMD(testmode_cmd, TESTMODE);
1908 #endif
1909
1910         if (rdev->ops->connect || rdev->ops->auth) {
1911                 i++;
1912                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1913                         goto nla_put_failure;
1914         }
1915
1916         if (rdev->ops->disconnect || rdev->ops->deauth) {
1917                 i++;
1918                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1919                         goto nla_put_failure;
1920         }
1921
1922         return i;
1923  nla_put_failure:
1924         return -ENOBUFS;
1925 }
1926
1927 static int
1928 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1929                            struct sk_buff *msg)
1930 {
1931         struct nlattr *ftm;
1932
1933         if (!cap->ftm.supported)
1934                 return 0;
1935
1936         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1937         if (!ftm)
1938                 return -ENOBUFS;
1939
1940         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1941                 return -ENOBUFS;
1942         if (cap->ftm.non_asap &&
1943             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1944                 return -ENOBUFS;
1945         if (cap->ftm.request_lci &&
1946             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1947                 return -ENOBUFS;
1948         if (cap->ftm.request_civicloc &&
1949             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1950                 return -ENOBUFS;
1951         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1952                         cap->ftm.preambles))
1953                 return -ENOBUFS;
1954         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1955                         cap->ftm.bandwidths))
1956                 return -ENOBUFS;
1957         if (cap->ftm.max_bursts_exponent >= 0 &&
1958             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1959                         cap->ftm.max_bursts_exponent))
1960                 return -ENOBUFS;
1961         if (cap->ftm.max_ftms_per_burst &&
1962             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1963                         cap->ftm.max_ftms_per_burst))
1964                 return -ENOBUFS;
1965         if (cap->ftm.trigger_based &&
1966             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1967                 return -ENOBUFS;
1968         if (cap->ftm.non_trigger_based &&
1969             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1970                 return -ENOBUFS;
1971
1972         nla_nest_end(msg, ftm);
1973         return 0;
1974 }
1975
1976 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1977                                   struct sk_buff *msg)
1978 {
1979         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1980         struct nlattr *pmsr, *caps;
1981
1982         if (!cap)
1983                 return 0;
1984
1985         /*
1986          * we don't need to clean up anything here since the caller
1987          * will genlmsg_cancel() if we fail
1988          */
1989
1990         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1991         if (!pmsr)
1992                 return -ENOBUFS;
1993
1994         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1995                 return -ENOBUFS;
1996
1997         if (cap->report_ap_tsf &&
1998             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1999                 return -ENOBUFS;
2000
2001         if (cap->randomize_mac_addr &&
2002             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2003                 return -ENOBUFS;
2004
2005         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2006         if (!caps)
2007                 return -ENOBUFS;
2008
2009         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2010                 return -ENOBUFS;
2011
2012         nla_nest_end(msg, caps);
2013         nla_nest_end(msg, pmsr);
2014
2015         return 0;
2016 }
2017
2018 static int
2019 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2020                               struct sk_buff *msg)
2021 {
2022         int i;
2023         struct nlattr *nested, *nested_akms;
2024         const struct wiphy_iftype_akm_suites *iftype_akms;
2025
2026         if (!rdev->wiphy.num_iftype_akm_suites ||
2027             !rdev->wiphy.iftype_akm_suites)
2028                 return 0;
2029
2030         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2031         if (!nested)
2032                 return -ENOBUFS;
2033
2034         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2035                 nested_akms = nla_nest_start(msg, i + 1);
2036                 if (!nested_akms)
2037                         return -ENOBUFS;
2038
2039                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2040
2041                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2042                                         iftype_akms->iftypes_mask))
2043                         return -ENOBUFS;
2044
2045                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2046                             sizeof(u32) * iftype_akms->n_akm_suites,
2047                             iftype_akms->akm_suites)) {
2048                         return -ENOBUFS;
2049                 }
2050                 nla_nest_end(msg, nested_akms);
2051         }
2052
2053         nla_nest_end(msg, nested);
2054
2055         return 0;
2056 }
2057
2058 static int
2059 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2060                                struct sk_buff *msg)
2061 {
2062         struct nlattr *supp;
2063
2064         if (!rdev->wiphy.tid_config_support.vif &&
2065             !rdev->wiphy.tid_config_support.peer)
2066                 return 0;
2067
2068         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2069         if (!supp)
2070                 return -ENOSPC;
2071
2072         if (rdev->wiphy.tid_config_support.vif &&
2073             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2074                               rdev->wiphy.tid_config_support.vif,
2075                               NL80211_TID_CONFIG_ATTR_PAD))
2076                 goto fail;
2077
2078         if (rdev->wiphy.tid_config_support.peer &&
2079             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2080                               rdev->wiphy.tid_config_support.peer,
2081                               NL80211_TID_CONFIG_ATTR_PAD))
2082                 goto fail;
2083
2084         /* for now we just use the same value ... makes more sense */
2085         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2086                        rdev->wiphy.tid_config_support.max_retry))
2087                 goto fail;
2088         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2089                        rdev->wiphy.tid_config_support.max_retry))
2090                 goto fail;
2091
2092         nla_nest_end(msg, supp);
2093
2094         return 0;
2095 fail:
2096         nla_nest_cancel(msg, supp);
2097         return -ENOBUFS;
2098 }
2099
2100 struct nl80211_dump_wiphy_state {
2101         s64 filter_wiphy;
2102         long start;
2103         long split_start, band_start, chan_start, capa_start;
2104         bool split;
2105 };
2106
2107 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2108                               enum nl80211_commands cmd,
2109                               struct sk_buff *msg, u32 portid, u32 seq,
2110                               int flags, struct nl80211_dump_wiphy_state *state)
2111 {
2112         void *hdr;
2113         struct nlattr *nl_bands, *nl_band;
2114         struct nlattr *nl_freqs, *nl_freq;
2115         struct nlattr *nl_cmds;
2116         enum nl80211_band band;
2117         struct ieee80211_channel *chan;
2118         int i;
2119         const struct ieee80211_txrx_stypes *mgmt_stypes =
2120                                 rdev->wiphy.mgmt_stypes;
2121         u32 features;
2122
2123         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2124         if (!hdr)
2125                 return -ENOBUFS;
2126
2127         if (WARN_ON(!state))
2128                 return -EINVAL;
2129
2130         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2131             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2132                            wiphy_name(&rdev->wiphy)) ||
2133             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2134                         cfg80211_rdev_list_generation))
2135                 goto nla_put_failure;
2136
2137         if (cmd != NL80211_CMD_NEW_WIPHY)
2138                 goto finish;
2139
2140         switch (state->split_start) {
2141         case 0:
2142                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2143                                rdev->wiphy.retry_short) ||
2144                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2145                                rdev->wiphy.retry_long) ||
2146                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2147                                 rdev->wiphy.frag_threshold) ||
2148                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2149                                 rdev->wiphy.rts_threshold) ||
2150                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2151                                rdev->wiphy.coverage_class) ||
2152                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2153                                rdev->wiphy.max_scan_ssids) ||
2154                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2155                                rdev->wiphy.max_sched_scan_ssids) ||
2156                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2157                                 rdev->wiphy.max_scan_ie_len) ||
2158                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2159                                 rdev->wiphy.max_sched_scan_ie_len) ||
2160                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2161                                rdev->wiphy.max_match_sets))
2162                         goto nla_put_failure;
2163
2164                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2165                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2166                         goto nla_put_failure;
2167                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2168                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2169                         goto nla_put_failure;
2170                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2171                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2172                         goto nla_put_failure;
2173                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2174                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2175                         goto nla_put_failure;
2176                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2177                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2178                         goto nla_put_failure;
2179                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2180                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2181                         goto nla_put_failure;
2182                 state->split_start++;
2183                 if (state->split)
2184                         break;
2185                 fallthrough;
2186         case 1:
2187                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2188                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2189                             rdev->wiphy.cipher_suites))
2190                         goto nla_put_failure;
2191
2192                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2193                                rdev->wiphy.max_num_pmkids))
2194                         goto nla_put_failure;
2195
2196                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2197                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2198                         goto nla_put_failure;
2199
2200                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2201                                 rdev->wiphy.available_antennas_tx) ||
2202                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2203                                 rdev->wiphy.available_antennas_rx))
2204                         goto nla_put_failure;
2205
2206                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2207                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2208                                 rdev->wiphy.probe_resp_offload))
2209                         goto nla_put_failure;
2210
2211                 if ((rdev->wiphy.available_antennas_tx ||
2212                      rdev->wiphy.available_antennas_rx) &&
2213                     rdev->ops->get_antenna) {
2214                         u32 tx_ant = 0, rx_ant = 0;
2215                         int res;
2216
2217                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2218                         if (!res) {
2219                                 if (nla_put_u32(msg,
2220                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2221                                                 tx_ant) ||
2222                                     nla_put_u32(msg,
2223                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2224                                                 rx_ant))
2225                                         goto nla_put_failure;
2226                         }
2227                 }
2228
2229                 state->split_start++;
2230                 if (state->split)
2231                         break;
2232                 fallthrough;
2233         case 2:
2234                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2235                                         rdev->wiphy.interface_modes))
2236                                 goto nla_put_failure;
2237                 state->split_start++;
2238                 if (state->split)
2239                         break;
2240                 fallthrough;
2241         case 3:
2242                 nl_bands = nla_nest_start_noflag(msg,
2243                                                  NL80211_ATTR_WIPHY_BANDS);
2244                 if (!nl_bands)
2245                         goto nla_put_failure;
2246
2247                 for (band = state->band_start;
2248                      band < NUM_NL80211_BANDS; band++) {
2249                         struct ieee80211_supported_band *sband;
2250
2251                         /* omit higher bands for ancient software */
2252                         if (band > NL80211_BAND_5GHZ && !state->split)
2253                                 break;
2254
2255                         sband = rdev->wiphy.bands[band];
2256
2257                         if (!sband)
2258                                 continue;
2259
2260                         nl_band = nla_nest_start_noflag(msg, band);
2261                         if (!nl_band)
2262                                 goto nla_put_failure;
2263
2264                         switch (state->chan_start) {
2265                         case 0:
2266                                 if (nl80211_send_band_rateinfo(msg, sband,
2267                                                                state->split))
2268                                         goto nla_put_failure;
2269                                 state->chan_start++;
2270                                 if (state->split)
2271                                         break;
2272                                 fallthrough;
2273                         default:
2274                                 /* add frequencies */
2275                                 nl_freqs = nla_nest_start_noflag(msg,
2276                                                                  NL80211_BAND_ATTR_FREQS);
2277                                 if (!nl_freqs)
2278                                         goto nla_put_failure;
2279
2280                                 for (i = state->chan_start - 1;
2281                                      i < sband->n_channels;
2282                                      i++) {
2283                                         nl_freq = nla_nest_start_noflag(msg,
2284                                                                         i);
2285                                         if (!nl_freq)
2286                                                 goto nla_put_failure;
2287
2288                                         chan = &sband->channels[i];
2289
2290                                         if (nl80211_msg_put_channel(
2291                                                         msg, &rdev->wiphy, chan,
2292                                                         state->split))
2293                                                 goto nla_put_failure;
2294
2295                                         nla_nest_end(msg, nl_freq);
2296                                         if (state->split)
2297                                                 break;
2298                                 }
2299                                 if (i < sband->n_channels)
2300                                         state->chan_start = i + 2;
2301                                 else
2302                                         state->chan_start = 0;
2303                                 nla_nest_end(msg, nl_freqs);
2304                         }
2305
2306                         nla_nest_end(msg, nl_band);
2307
2308                         if (state->split) {
2309                                 /* start again here */
2310                                 if (state->chan_start)
2311                                         band--;
2312                                 break;
2313                         }
2314                 }
2315                 nla_nest_end(msg, nl_bands);
2316
2317                 if (band < NUM_NL80211_BANDS)
2318                         state->band_start = band + 1;
2319                 else
2320                         state->band_start = 0;
2321
2322                 /* if bands & channels are done, continue outside */
2323                 if (state->band_start == 0 && state->chan_start == 0)
2324                         state->split_start++;
2325                 if (state->split)
2326                         break;
2327                 fallthrough;
2328         case 4:
2329                 nl_cmds = nla_nest_start_noflag(msg,
2330                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2331                 if (!nl_cmds)
2332                         goto nla_put_failure;
2333
2334                 i = nl80211_add_commands_unsplit(rdev, msg);
2335                 if (i < 0)
2336                         goto nla_put_failure;
2337                 if (state->split) {
2338                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2339                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2340                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2341                                 CMD(channel_switch, CHANNEL_SWITCH);
2342                         CMD(set_qos_map, SET_QOS_MAP);
2343                         if (rdev->wiphy.features &
2344                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2345                                 CMD(add_tx_ts, ADD_TX_TS);
2346                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2347                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2348                         CMD(update_ft_ies, UPDATE_FT_IES);
2349                 }
2350 #undef CMD
2351
2352                 nla_nest_end(msg, nl_cmds);
2353                 state->split_start++;
2354                 if (state->split)
2355                         break;
2356                 fallthrough;
2357         case 5:
2358                 if (rdev->ops->remain_on_channel &&
2359                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2360                     nla_put_u32(msg,
2361                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2362                                 rdev->wiphy.max_remain_on_channel_duration))
2363                         goto nla_put_failure;
2364
2365                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2366                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2367                         goto nla_put_failure;
2368
2369                 state->split_start++;
2370                 if (state->split)
2371                         break;
2372                 fallthrough;
2373         case 6:
2374 #ifdef CONFIG_PM
2375                 if (nl80211_send_wowlan(msg, rdev, state->split))
2376                         goto nla_put_failure;
2377                 state->split_start++;
2378                 if (state->split)
2379                         break;
2380 #else
2381                 state->split_start++;
2382 #endif
2383                 fallthrough;
2384         case 7:
2385                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2386                                         rdev->wiphy.software_iftypes))
2387                         goto nla_put_failure;
2388
2389                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2390                                                    state->split))
2391                         goto nla_put_failure;
2392
2393                 state->split_start++;
2394                 if (state->split)
2395                         break;
2396                 fallthrough;
2397         case 8:
2398                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2399                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2400                                 rdev->wiphy.ap_sme_capa))
2401                         goto nla_put_failure;
2402
2403                 features = rdev->wiphy.features;
2404                 /*
2405                  * We can only add the per-channel limit information if the
2406                  * dump is split, otherwise it makes it too big. Therefore
2407                  * only advertise it in that case.
2408                  */
2409                 if (state->split)
2410                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2411                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2412                         goto nla_put_failure;
2413
2414                 if (rdev->wiphy.ht_capa_mod_mask &&
2415                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2416                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2417                             rdev->wiphy.ht_capa_mod_mask))
2418                         goto nla_put_failure;
2419
2420                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2421                     rdev->wiphy.max_acl_mac_addrs &&
2422                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2423                                 rdev->wiphy.max_acl_mac_addrs))
2424                         goto nla_put_failure;
2425
2426                 /*
2427                  * Any information below this point is only available to
2428                  * applications that can deal with it being split. This
2429                  * helps ensure that newly added capabilities don't break
2430                  * older tools by overrunning their buffers.
2431                  *
2432                  * We still increment split_start so that in the split
2433                  * case we'll continue with more data in the next round,
2434                  * but break unconditionally so unsplit data stops here.
2435                  */
2436                 if (state->split)
2437                         state->split_start++;
2438                 else
2439                         state->split_start = 0;
2440                 break;
2441         case 9:
2442                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2443                         goto nla_put_failure;
2444
2445                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2446                                 rdev->wiphy.max_sched_scan_plans) ||
2447                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2448                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2449                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2450                                 rdev->wiphy.max_sched_scan_plan_iterations))
2451                         goto nla_put_failure;
2452
2453                 if (rdev->wiphy.extended_capabilities &&
2454                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2455                              rdev->wiphy.extended_capabilities_len,
2456                              rdev->wiphy.extended_capabilities) ||
2457                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2458                              rdev->wiphy.extended_capabilities_len,
2459                              rdev->wiphy.extended_capabilities_mask)))
2460                         goto nla_put_failure;
2461
2462                 if (rdev->wiphy.vht_capa_mod_mask &&
2463                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2464                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2465                             rdev->wiphy.vht_capa_mod_mask))
2466                         goto nla_put_failure;
2467
2468                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2469                             rdev->wiphy.perm_addr))
2470                         goto nla_put_failure;
2471
2472                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2473                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2474                             rdev->wiphy.addr_mask))
2475                         goto nla_put_failure;
2476
2477                 if (rdev->wiphy.n_addresses > 1) {
2478                         void *attr;
2479
2480                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2481                         if (!attr)
2482                                 goto nla_put_failure;
2483
2484                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2485                                 if (nla_put(msg, i + 1, ETH_ALEN,
2486                                             rdev->wiphy.addresses[i].addr))
2487                                         goto nla_put_failure;
2488
2489                         nla_nest_end(msg, attr);
2490                 }
2491
2492                 state->split_start++;
2493                 break;
2494         case 10:
2495                 if (nl80211_send_coalesce(msg, rdev))
2496                         goto nla_put_failure;
2497
2498                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2499                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2500                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2501                         goto nla_put_failure;
2502
2503                 if (rdev->wiphy.max_ap_assoc_sta &&
2504                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2505                                 rdev->wiphy.max_ap_assoc_sta))
2506                         goto nla_put_failure;
2507
2508                 state->split_start++;
2509                 break;
2510         case 11:
2511                 if (rdev->wiphy.n_vendor_commands) {
2512                         const struct nl80211_vendor_cmd_info *info;
2513                         struct nlattr *nested;
2514
2515                         nested = nla_nest_start_noflag(msg,
2516                                                        NL80211_ATTR_VENDOR_DATA);
2517                         if (!nested)
2518                                 goto nla_put_failure;
2519
2520                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2521                                 info = &rdev->wiphy.vendor_commands[i].info;
2522                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2523                                         goto nla_put_failure;
2524                         }
2525                         nla_nest_end(msg, nested);
2526                 }
2527
2528                 if (rdev->wiphy.n_vendor_events) {
2529                         const struct nl80211_vendor_cmd_info *info;
2530                         struct nlattr *nested;
2531
2532                         nested = nla_nest_start_noflag(msg,
2533                                                        NL80211_ATTR_VENDOR_EVENTS);
2534                         if (!nested)
2535                                 goto nla_put_failure;
2536
2537                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2538                                 info = &rdev->wiphy.vendor_events[i];
2539                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2540                                         goto nla_put_failure;
2541                         }
2542                         nla_nest_end(msg, nested);
2543                 }
2544                 state->split_start++;
2545                 break;
2546         case 12:
2547                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2548                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2549                                rdev->wiphy.max_num_csa_counters))
2550                         goto nla_put_failure;
2551
2552                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2553                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2554                         goto nla_put_failure;
2555
2556                 if (rdev->wiphy.max_sched_scan_reqs &&
2557                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2558                                 rdev->wiphy.max_sched_scan_reqs))
2559                         goto nla_put_failure;
2560
2561                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2562                             sizeof(rdev->wiphy.ext_features),
2563                             rdev->wiphy.ext_features))
2564                         goto nla_put_failure;
2565
2566                 if (rdev->wiphy.bss_select_support) {
2567                         struct nlattr *nested;
2568                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2569
2570                         nested = nla_nest_start_noflag(msg,
2571                                                        NL80211_ATTR_BSS_SELECT);
2572                         if (!nested)
2573                                 goto nla_put_failure;
2574
2575                         i = 0;
2576                         while (bss_select_support) {
2577                                 if ((bss_select_support & 1) &&
2578                                     nla_put_flag(msg, i))
2579                                         goto nla_put_failure;
2580                                 i++;
2581                                 bss_select_support >>= 1;
2582                         }
2583                         nla_nest_end(msg, nested);
2584                 }
2585
2586                 state->split_start++;
2587                 break;
2588         case 13:
2589                 if (rdev->wiphy.num_iftype_ext_capab &&
2590                     rdev->wiphy.iftype_ext_capab) {
2591                         struct nlattr *nested_ext_capab, *nested;
2592
2593                         nested = nla_nest_start_noflag(msg,
2594                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2595                         if (!nested)
2596                                 goto nla_put_failure;
2597
2598                         for (i = state->capa_start;
2599                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2600                                 const struct wiphy_iftype_ext_capab *capab;
2601
2602                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2603
2604                                 nested_ext_capab = nla_nest_start_noflag(msg,
2605                                                                          i);
2606                                 if (!nested_ext_capab ||
2607                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2608                                                 capab->iftype) ||
2609                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2610                                             capab->extended_capabilities_len,
2611                                             capab->extended_capabilities) ||
2612                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2613                                             capab->extended_capabilities_len,
2614                                             capab->extended_capabilities_mask))
2615                                         goto nla_put_failure;
2616
2617                                 nla_nest_end(msg, nested_ext_capab);
2618                                 if (state->split)
2619                                         break;
2620                         }
2621                         nla_nest_end(msg, nested);
2622                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2623                                 state->capa_start = i + 1;
2624                                 break;
2625                         }
2626                 }
2627
2628                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2629                                 rdev->wiphy.nan_supported_bands))
2630                         goto nla_put_failure;
2631
2632                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2633                                             NL80211_EXT_FEATURE_TXQS)) {
2634                         struct cfg80211_txq_stats txqstats = {};
2635                         int res;
2636
2637                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2638                         if (!res &&
2639                             !nl80211_put_txq_stats(msg, &txqstats,
2640                                                    NL80211_ATTR_TXQ_STATS))
2641                                 goto nla_put_failure;
2642
2643                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2644                                         rdev->wiphy.txq_limit))
2645                                 goto nla_put_failure;
2646                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2647                                         rdev->wiphy.txq_memory_limit))
2648                                 goto nla_put_failure;
2649                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2650                                         rdev->wiphy.txq_quantum))
2651                                 goto nla_put_failure;
2652                 }
2653
2654                 state->split_start++;
2655                 break;
2656         case 14:
2657                 if (nl80211_send_pmsr_capa(rdev, msg))
2658                         goto nla_put_failure;
2659
2660                 state->split_start++;
2661                 break;
2662         case 15:
2663                 if (rdev->wiphy.akm_suites &&
2664                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2665                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2666                             rdev->wiphy.akm_suites))
2667                         goto nla_put_failure;
2668
2669                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2670                         goto nla_put_failure;
2671
2672                 if (nl80211_put_tid_config_support(rdev, msg))
2673                         goto nla_put_failure;
2674
2675                 /* done */
2676                 state->split_start = 0;
2677                 break;
2678         }
2679  finish:
2680         genlmsg_end(msg, hdr);
2681         return 0;
2682
2683  nla_put_failure:
2684         genlmsg_cancel(msg, hdr);
2685         return -EMSGSIZE;
2686 }
2687
2688 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2689                                     struct netlink_callback *cb,
2690                                     struct nl80211_dump_wiphy_state *state)
2691 {
2692         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2693         int ret;
2694
2695         if (!tb)
2696                 return -ENOMEM;
2697
2698         ret = nlmsg_parse_deprecated(cb->nlh,
2699                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2700                                      tb, nl80211_fam.maxattr,
2701                                      nl80211_policy, NULL);
2702         /* ignore parse errors for backward compatibility */
2703         if (ret) {
2704                 ret = 0;
2705                 goto out;
2706         }
2707
2708         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2709         if (tb[NL80211_ATTR_WIPHY])
2710                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2711         if (tb[NL80211_ATTR_WDEV])
2712                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2713         if (tb[NL80211_ATTR_IFINDEX]) {
2714                 struct net_device *netdev;
2715                 struct cfg80211_registered_device *rdev;
2716                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2717
2718                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2719                 if (!netdev) {
2720                         ret = -ENODEV;
2721                         goto out;
2722                 }
2723                 if (netdev->ieee80211_ptr) {
2724                         rdev = wiphy_to_rdev(
2725                                 netdev->ieee80211_ptr->wiphy);
2726                         state->filter_wiphy = rdev->wiphy_idx;
2727                 }
2728         }
2729
2730         ret = 0;
2731 out:
2732         kfree(tb);
2733         return ret;
2734 }
2735
2736 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2737 {
2738         int idx = 0, ret;
2739         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2740         struct cfg80211_registered_device *rdev;
2741
2742         rtnl_lock();
2743         if (!state) {
2744                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2745                 if (!state) {
2746                         rtnl_unlock();
2747                         return -ENOMEM;
2748                 }
2749                 state->filter_wiphy = -1;
2750                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2751                 if (ret) {
2752                         kfree(state);
2753                         rtnl_unlock();
2754                         return ret;
2755                 }
2756                 cb->args[0] = (long)state;
2757         }
2758
2759         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2760                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2761                         continue;
2762                 if (++idx <= state->start)
2763                         continue;
2764                 if (state->filter_wiphy != -1 &&
2765                     state->filter_wiphy != rdev->wiphy_idx)
2766                         continue;
2767                 /* attempt to fit multiple wiphy data chunks into the skb */
2768                 do {
2769                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2770                                                  skb,
2771                                                  NETLINK_CB(cb->skb).portid,
2772                                                  cb->nlh->nlmsg_seq,
2773                                                  NLM_F_MULTI, state);
2774                         if (ret < 0) {
2775                                 /*
2776                                  * If sending the wiphy data didn't fit (ENOBUFS
2777                                  * or EMSGSIZE returned), this SKB is still
2778                                  * empty (so it's not too big because another
2779                                  * wiphy dataset is already in the skb) and
2780                                  * we've not tried to adjust the dump allocation
2781                                  * yet ... then adjust the alloc size to be
2782                                  * bigger, and return 1 but with the empty skb.
2783                                  * This results in an empty message being RX'ed
2784                                  * in userspace, but that is ignored.
2785                                  *
2786                                  * We can then retry with the larger buffer.
2787                                  */
2788                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2789                                     !skb->len && !state->split &&
2790                                     cb->min_dump_alloc < 4096) {
2791                                         cb->min_dump_alloc = 4096;
2792                                         state->split_start = 0;
2793                                         rtnl_unlock();
2794                                         return 1;
2795                                 }
2796                                 idx--;
2797                                 break;
2798                         }
2799                 } while (state->split_start > 0);
2800                 break;
2801         }
2802         rtnl_unlock();
2803
2804         state->start = idx;
2805
2806         return skb->len;
2807 }
2808
2809 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2810 {
2811         kfree((void *)cb->args[0]);
2812         return 0;
2813 }
2814
2815 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2816 {
2817         struct sk_buff *msg;
2818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2819         struct nl80211_dump_wiphy_state state = {};
2820
2821         msg = nlmsg_new(4096, GFP_KERNEL);
2822         if (!msg)
2823                 return -ENOMEM;
2824
2825         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2826                                info->snd_portid, info->snd_seq, 0,
2827                                &state) < 0) {
2828                 nlmsg_free(msg);
2829                 return -ENOBUFS;
2830         }
2831
2832         return genlmsg_reply(msg, info);
2833 }
2834
2835 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2836         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2837         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2838         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2839         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2840         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2841 };
2842
2843 static int parse_txq_params(struct nlattr *tb[],
2844                             struct ieee80211_txq_params *txq_params)
2845 {
2846         u8 ac;
2847
2848         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2849             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2850             !tb[NL80211_TXQ_ATTR_AIFS])
2851                 return -EINVAL;
2852
2853         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2854         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2855         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2856         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2857         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2858
2859         if (ac >= NL80211_NUM_ACS)
2860                 return -EINVAL;
2861         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2862         return 0;
2863 }
2864
2865 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2866 {
2867         /*
2868          * You can only set the channel explicitly for WDS interfaces,
2869          * all others have their channel managed via their respective
2870          * "establish a connection" command (connect, join, ...)
2871          *
2872          * For AP/GO and mesh mode, the channel can be set with the
2873          * channel userspace API, but is only stored and passed to the
2874          * low-level driver when the AP starts or the mesh is joined.
2875          * This is for backward compatibility, userspace can also give
2876          * the channel in the start-ap or join-mesh commands instead.
2877          *
2878          * Monitors are special as they are normally slaved to
2879          * whatever else is going on, so they have their own special
2880          * operation to set the monitor channel if possible.
2881          */
2882         return !wdev ||
2883                 wdev->iftype == NL80211_IFTYPE_AP ||
2884                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2885                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2886                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2887 }
2888
2889 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2890                           struct genl_info *info,
2891                           struct cfg80211_chan_def *chandef)
2892 {
2893         struct netlink_ext_ack *extack = info->extack;
2894         struct nlattr **attrs = info->attrs;
2895         u32 control_freq;
2896
2897         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2898                 return -EINVAL;
2899
2900         control_freq = MHZ_TO_KHZ(
2901                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2902         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2903                 control_freq +=
2904                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2905
2906         memset(chandef, 0, sizeof(*chandef));
2907         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2908         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2909         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2910         chandef->freq1_offset = control_freq % 1000;
2911         chandef->center_freq2 = 0;
2912
2913         /* Primary channel not allowed */
2914         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2915                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2916                                     "Channel is disabled");
2917                 return -EINVAL;
2918         }
2919
2920         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2921                 enum nl80211_channel_type chantype;
2922
2923                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2924
2925                 switch (chantype) {
2926                 case NL80211_CHAN_NO_HT:
2927                 case NL80211_CHAN_HT20:
2928                 case NL80211_CHAN_HT40PLUS:
2929                 case NL80211_CHAN_HT40MINUS:
2930                         cfg80211_chandef_create(chandef, chandef->chan,
2931                                                 chantype);
2932                         /* user input for center_freq is incorrect */
2933                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2934                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2935                                 NL_SET_ERR_MSG_ATTR(extack,
2936                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2937                                                     "bad center frequency 1");
2938                                 return -EINVAL;
2939                         }
2940                         /* center_freq2 must be zero */
2941                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2942                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2943                                 NL_SET_ERR_MSG_ATTR(extack,
2944                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2945                                                     "center frequency 2 can't be used");
2946                                 return -EINVAL;
2947                         }
2948                         break;
2949                 default:
2950                         NL_SET_ERR_MSG_ATTR(extack,
2951                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2952                                             "invalid channel type");
2953                         return -EINVAL;
2954                 }
2955         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2956                 chandef->width =
2957                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2958                 if (chandef->chan->band == NL80211_BAND_S1GHZ) {
2959                         /* User input error for channel width doesn't match channel  */
2960                         if (chandef->width != ieee80211_s1g_channel_width(chandef->chan)) {
2961                                 NL_SET_ERR_MSG_ATTR(extack,
2962                                                     attrs[NL80211_ATTR_CHANNEL_WIDTH],
2963                                                     "bad channel width");
2964                                 return -EINVAL;
2965                         }
2966                 }
2967                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2968                         chandef->center_freq1 =
2969                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2970                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2971                                 chandef->freq1_offset = nla_get_u32(
2972                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2973                         else
2974                                 chandef->freq1_offset = 0;
2975                 }
2976                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2977                         chandef->center_freq2 =
2978                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2979         }
2980
2981         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2982                 chandef->edmg.channels =
2983                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2984
2985                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2986                         chandef->edmg.bw_config =
2987                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2988         } else {
2989                 chandef->edmg.bw_config = 0;
2990                 chandef->edmg.channels = 0;
2991         }
2992
2993         if (!cfg80211_chandef_valid(chandef)) {
2994                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2995                 return -EINVAL;
2996         }
2997
2998         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2999                                      IEEE80211_CHAN_DISABLED)) {
3000                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3001                 return -EINVAL;
3002         }
3003
3004         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3005              chandef->width == NL80211_CHAN_WIDTH_10) &&
3006             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3007                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3008                 return -EINVAL;
3009         }
3010
3011         return 0;
3012 }
3013
3014 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3015                                  struct net_device *dev,
3016                                  struct genl_info *info)
3017 {
3018         struct cfg80211_chan_def chandef;
3019         int result;
3020         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3021         struct wireless_dev *wdev = NULL;
3022
3023         if (dev)
3024                 wdev = dev->ieee80211_ptr;
3025         if (!nl80211_can_set_dev_channel(wdev))
3026                 return -EOPNOTSUPP;
3027         if (wdev)
3028                 iftype = wdev->iftype;
3029
3030         result = nl80211_parse_chandef(rdev, info, &chandef);
3031         if (result)
3032                 return result;
3033
3034         switch (iftype) {
3035         case NL80211_IFTYPE_AP:
3036         case NL80211_IFTYPE_P2P_GO:
3037                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3038                                                    iftype)) {
3039                         result = -EINVAL;
3040                         break;
3041                 }
3042                 if (wdev->beacon_interval) {
3043                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3044                             !(rdev->wiphy.features &
3045                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3046                                 result = -EBUSY;
3047                                 break;
3048                         }
3049
3050                         /* Only allow dynamic channel width changes */
3051                         if (chandef.chan != wdev->preset_chandef.chan) {
3052                                 result = -EBUSY;
3053                                 break;
3054                         }
3055                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3056                         if (result)
3057                                 break;
3058                 }
3059                 wdev->preset_chandef = chandef;
3060                 result = 0;
3061                 break;
3062         case NL80211_IFTYPE_MESH_POINT:
3063                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3064                 break;
3065         case NL80211_IFTYPE_MONITOR:
3066                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3067                 break;
3068         default:
3069                 result = -EINVAL;
3070         }
3071
3072         return result;
3073 }
3074
3075 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3076 {
3077         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3078         struct net_device *netdev = info->user_ptr[1];
3079
3080         return __nl80211_set_channel(rdev, netdev, info);
3081 }
3082
3083 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3084 {
3085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3086         struct net_device *dev = info->user_ptr[1];
3087         struct wireless_dev *wdev = dev->ieee80211_ptr;
3088         const u8 *bssid;
3089
3090         if (!info->attrs[NL80211_ATTR_MAC])
3091                 return -EINVAL;
3092
3093         if (netif_running(dev))
3094                 return -EBUSY;
3095
3096         if (!rdev->ops->set_wds_peer)
3097                 return -EOPNOTSUPP;
3098
3099         if (wdev->iftype != NL80211_IFTYPE_WDS)
3100                 return -EOPNOTSUPP;
3101
3102         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3103         return rdev_set_wds_peer(rdev, dev, bssid);
3104 }
3105
3106 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3107 {
3108         struct cfg80211_registered_device *rdev;
3109         struct net_device *netdev = NULL;
3110         struct wireless_dev *wdev;
3111         int result = 0, rem_txq_params = 0;
3112         struct nlattr *nl_txq_params;
3113         u32 changed;
3114         u8 retry_short = 0, retry_long = 0;
3115         u32 frag_threshold = 0, rts_threshold = 0;
3116         u8 coverage_class = 0;
3117         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3118
3119         ASSERT_RTNL();
3120
3121         /*
3122          * Try to find the wiphy and netdev. Normally this
3123          * function shouldn't need the netdev, but this is
3124          * done for backward compatibility -- previously
3125          * setting the channel was done per wiphy, but now
3126          * it is per netdev. Previous userland like hostapd
3127          * also passed a netdev to set_wiphy, so that it is
3128          * possible to let that go to the right netdev!
3129          */
3130
3131         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3132                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3133
3134                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3135                 if (netdev && netdev->ieee80211_ptr)
3136                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3137                 else
3138                         netdev = NULL;
3139         }
3140
3141         if (!netdev) {
3142                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3143                                                   info->attrs);
3144                 if (IS_ERR(rdev))
3145                         return PTR_ERR(rdev);
3146                 wdev = NULL;
3147                 netdev = NULL;
3148                 result = 0;
3149         } else
3150                 wdev = netdev->ieee80211_ptr;
3151
3152         /*
3153          * end workaround code, by now the rdev is available
3154          * and locked, and wdev may or may not be NULL.
3155          */
3156
3157         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3158                 result = cfg80211_dev_rename(
3159                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3160
3161         if (result)
3162                 return result;
3163
3164         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3165                 struct ieee80211_txq_params txq_params;
3166                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3167
3168                 if (!rdev->ops->set_txq_params)
3169                         return -EOPNOTSUPP;
3170
3171                 if (!netdev)
3172                         return -EINVAL;
3173
3174                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3175                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3176                         return -EINVAL;
3177
3178                 if (!netif_running(netdev))
3179                         return -ENETDOWN;
3180
3181                 nla_for_each_nested(nl_txq_params,
3182                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3183                                     rem_txq_params) {
3184                         result = nla_parse_nested_deprecated(tb,
3185                                                              NL80211_TXQ_ATTR_MAX,
3186                                                              nl_txq_params,
3187                                                              txq_params_policy,
3188                                                              info->extack);
3189                         if (result)
3190                                 return result;
3191                         result = parse_txq_params(tb, &txq_params);
3192                         if (result)
3193                                 return result;
3194
3195                         result = rdev_set_txq_params(rdev, netdev,
3196                                                      &txq_params);
3197                         if (result)
3198                                 return result;
3199                 }
3200         }
3201
3202         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3203                 result = __nl80211_set_channel(
3204                         rdev,
3205                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3206                         info);
3207                 if (result)
3208                         return result;
3209         }
3210
3211         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3212                 struct wireless_dev *txp_wdev = wdev;
3213                 enum nl80211_tx_power_setting type;
3214                 int idx, mbm = 0;
3215
3216                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3217                         txp_wdev = NULL;
3218
3219                 if (!rdev->ops->set_tx_power)
3220                         return -EOPNOTSUPP;
3221
3222                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3223                 type = nla_get_u32(info->attrs[idx]);
3224
3225                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3226                     (type != NL80211_TX_POWER_AUTOMATIC))
3227                         return -EINVAL;
3228
3229                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3230                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3231                         mbm = nla_get_u32(info->attrs[idx]);
3232                 }
3233
3234                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3235                 if (result)
3236                         return result;
3237         }
3238
3239         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3240             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3241                 u32 tx_ant, rx_ant;
3242
3243                 if ((!rdev->wiphy.available_antennas_tx &&
3244                      !rdev->wiphy.available_antennas_rx) ||
3245                     !rdev->ops->set_antenna)
3246                         return -EOPNOTSUPP;
3247
3248                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3249                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3250
3251                 /* reject antenna configurations which don't match the
3252                  * available antenna masks, except for the "all" mask */
3253                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3254                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3255                         return -EINVAL;
3256
3257                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3258                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3259
3260                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3261                 if (result)
3262                         return result;
3263         }
3264
3265         changed = 0;
3266
3267         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3268                 retry_short = nla_get_u8(
3269                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3270
3271                 changed |= WIPHY_PARAM_RETRY_SHORT;
3272         }
3273
3274         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3275                 retry_long = nla_get_u8(
3276                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3277
3278                 changed |= WIPHY_PARAM_RETRY_LONG;
3279         }
3280
3281         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3282                 frag_threshold = nla_get_u32(
3283                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3284                 if (frag_threshold < 256)
3285                         return -EINVAL;
3286
3287                 if (frag_threshold != (u32) -1) {
3288                         /*
3289                          * Fragments (apart from the last one) are required to
3290                          * have even length. Make the fragmentation code
3291                          * simpler by stripping LSB should someone try to use
3292                          * odd threshold value.
3293                          */
3294                         frag_threshold &= ~0x1;
3295                 }
3296                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3297         }
3298
3299         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3300                 rts_threshold = nla_get_u32(
3301                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3302                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3303         }
3304
3305         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3306                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3307                         return -EINVAL;
3308
3309                 coverage_class = nla_get_u8(
3310                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3311                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3312         }
3313
3314         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3315                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3316                         return -EOPNOTSUPP;
3317
3318                 changed |= WIPHY_PARAM_DYN_ACK;
3319         }
3320
3321         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3322                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3323                                              NL80211_EXT_FEATURE_TXQS))
3324                         return -EOPNOTSUPP;
3325                 txq_limit = nla_get_u32(
3326                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3327                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3328         }
3329
3330         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3331                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3332                                              NL80211_EXT_FEATURE_TXQS))
3333                         return -EOPNOTSUPP;
3334                 txq_memory_limit = nla_get_u32(
3335                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3336                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3337         }
3338
3339         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3340                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3341                                              NL80211_EXT_FEATURE_TXQS))
3342                         return -EOPNOTSUPP;
3343                 txq_quantum = nla_get_u32(
3344                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3345                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3346         }
3347
3348         if (changed) {
3349                 u8 old_retry_short, old_retry_long;
3350                 u32 old_frag_threshold, old_rts_threshold;
3351                 u8 old_coverage_class;
3352                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3353
3354                 if (!rdev->ops->set_wiphy_params)
3355                         return -EOPNOTSUPP;
3356
3357                 old_retry_short = rdev->wiphy.retry_short;
3358                 old_retry_long = rdev->wiphy.retry_long;
3359                 old_frag_threshold = rdev->wiphy.frag_threshold;
3360                 old_rts_threshold = rdev->wiphy.rts_threshold;
3361                 old_coverage_class = rdev->wiphy.coverage_class;
3362                 old_txq_limit = rdev->wiphy.txq_limit;
3363                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3364                 old_txq_quantum = rdev->wiphy.txq_quantum;
3365
3366                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3367                         rdev->wiphy.retry_short = retry_short;
3368                 if (changed & WIPHY_PARAM_RETRY_LONG)
3369                         rdev->wiphy.retry_long = retry_long;
3370                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3371                         rdev->wiphy.frag_threshold = frag_threshold;
3372                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3373                         rdev->wiphy.rts_threshold = rts_threshold;
3374                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3375                         rdev->wiphy.coverage_class = coverage_class;
3376                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3377                         rdev->wiphy.txq_limit = txq_limit;
3378                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3379                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3380                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3381                         rdev->wiphy.txq_quantum = txq_quantum;
3382
3383                 result = rdev_set_wiphy_params(rdev, changed);
3384                 if (result) {
3385                         rdev->wiphy.retry_short = old_retry_short;
3386                         rdev->wiphy.retry_long = old_retry_long;
3387                         rdev->wiphy.frag_threshold = old_frag_threshold;
3388                         rdev->wiphy.rts_threshold = old_rts_threshold;
3389                         rdev->wiphy.coverage_class = old_coverage_class;
3390                         rdev->wiphy.txq_limit = old_txq_limit;
3391                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3392                         rdev->wiphy.txq_quantum = old_txq_quantum;
3393                         return result;
3394                 }
3395         }
3396         return 0;
3397 }
3398
3399 static int nl80211_send_chandef(struct sk_buff *msg,
3400                                 const struct cfg80211_chan_def *chandef)
3401 {
3402         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3403                 return -EINVAL;
3404
3405         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3406                         chandef->chan->center_freq))
3407                 return -ENOBUFS;
3408         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3409                         chandef->chan->freq_offset))
3410                 return -ENOBUFS;
3411         switch (chandef->width) {
3412         case NL80211_CHAN_WIDTH_20_NOHT:
3413         case NL80211_CHAN_WIDTH_20:
3414         case NL80211_CHAN_WIDTH_40:
3415                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3416                                 cfg80211_get_chandef_type(chandef)))
3417                         return -ENOBUFS;
3418                 break;
3419         default:
3420                 break;
3421         }
3422         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3423                 return -ENOBUFS;
3424         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3425                 return -ENOBUFS;
3426         if (chandef->center_freq2 &&
3427             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3428                 return -ENOBUFS;
3429         return 0;
3430 }
3431
3432 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3433                               struct cfg80211_registered_device *rdev,
3434                               struct wireless_dev *wdev,
3435                               enum nl80211_commands cmd)
3436 {
3437         struct net_device *dev = wdev->netdev;
3438         void *hdr;
3439
3440         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3441                 cmd != NL80211_CMD_DEL_INTERFACE &&
3442                 cmd != NL80211_CMD_SET_INTERFACE);
3443
3444         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3445         if (!hdr)
3446                 return -1;
3447
3448         if (dev &&
3449             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3450              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3451                 goto nla_put_failure;
3452
3453         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3454             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3455             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3456                               NL80211_ATTR_PAD) ||
3457             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3458             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3459                         rdev->devlist_generation ^
3460                         (cfg80211_rdev_list_generation << 2)) ||
3461             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3462                 goto nla_put_failure;
3463
3464         if (rdev->ops->get_channel) {
3465                 int ret;
3466                 struct cfg80211_chan_def chandef = {};
3467
3468                 ret = rdev_get_channel(rdev, wdev, &chandef);
3469                 if (ret == 0) {
3470                         if (nl80211_send_chandef(msg, &chandef))
3471                                 goto nla_put_failure;
3472                 }
3473         }
3474
3475         if (rdev->ops->get_tx_power) {
3476                 int dbm, ret;
3477
3478                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3479                 if (ret == 0 &&
3480                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3481                                 DBM_TO_MBM(dbm)))
3482                         goto nla_put_failure;
3483         }
3484
3485         wdev_lock(wdev);
3486         switch (wdev->iftype) {
3487         case NL80211_IFTYPE_AP:
3488         case NL80211_IFTYPE_P2P_GO:
3489                 if (wdev->ssid_len &&
3490                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3491                         goto nla_put_failure_locked;
3492                 break;
3493         case NL80211_IFTYPE_STATION:
3494         case NL80211_IFTYPE_P2P_CLIENT:
3495         case NL80211_IFTYPE_ADHOC: {
3496                 const u8 *ssid_ie;
3497                 if (!wdev->current_bss)
3498                         break;
3499                 rcu_read_lock();
3500                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3501                                                WLAN_EID_SSID);
3502                 if (ssid_ie &&
3503                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3504                         goto nla_put_failure_rcu_locked;
3505                 rcu_read_unlock();
3506                 break;
3507                 }
3508         default:
3509                 /* nothing */
3510                 break;
3511         }
3512         wdev_unlock(wdev);
3513
3514         if (rdev->ops->get_txq_stats) {
3515                 struct cfg80211_txq_stats txqstats = {};
3516                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3517
3518                 if (ret == 0 &&
3519                     !nl80211_put_txq_stats(msg, &txqstats,
3520                                            NL80211_ATTR_TXQ_STATS))
3521                         goto nla_put_failure;
3522         }
3523
3524         genlmsg_end(msg, hdr);
3525         return 0;
3526
3527  nla_put_failure_rcu_locked:
3528         rcu_read_unlock();
3529  nla_put_failure_locked:
3530         wdev_unlock(wdev);
3531  nla_put_failure:
3532         genlmsg_cancel(msg, hdr);
3533         return -EMSGSIZE;
3534 }
3535
3536 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3537 {
3538         int wp_idx = 0;
3539         int if_idx = 0;
3540         int wp_start = cb->args[0];
3541         int if_start = cb->args[1];
3542         int filter_wiphy = -1;
3543         struct cfg80211_registered_device *rdev;
3544         struct wireless_dev *wdev;
3545         int ret;
3546
3547         rtnl_lock();
3548         if (!cb->args[2]) {
3549                 struct nl80211_dump_wiphy_state state = {
3550                         .filter_wiphy = -1,
3551                 };
3552
3553                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3554                 if (ret)
3555                         goto out_unlock;
3556
3557                 filter_wiphy = state.filter_wiphy;
3558
3559                 /*
3560                  * if filtering, set cb->args[2] to +1 since 0 is the default
3561                  * value needed to determine that parsing is necessary.
3562                  */
3563                 if (filter_wiphy >= 0)
3564                         cb->args[2] = filter_wiphy + 1;
3565                 else
3566                         cb->args[2] = -1;
3567         } else if (cb->args[2] > 0) {
3568                 filter_wiphy = cb->args[2] - 1;
3569         }
3570
3571         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3572                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3573                         continue;
3574                 if (wp_idx < wp_start) {
3575                         wp_idx++;
3576                         continue;
3577                 }
3578
3579                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3580                         continue;
3581
3582                 if_idx = 0;
3583
3584                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3585                         if (if_idx < if_start) {
3586                                 if_idx++;
3587                                 continue;
3588                         }
3589                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3590                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3591                                                rdev, wdev,
3592                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3593                                 goto out;
3594                         }
3595                         if_idx++;
3596                 }
3597
3598                 if_start = 0;
3599                 wp_idx++;
3600         }
3601  out:
3602         cb->args[0] = wp_idx;
3603         cb->args[1] = if_idx;
3604
3605         ret = skb->len;
3606  out_unlock:
3607         rtnl_unlock();
3608
3609         return ret;
3610 }
3611
3612 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3613 {
3614         struct sk_buff *msg;
3615         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3616         struct wireless_dev *wdev = info->user_ptr[1];
3617
3618         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3619         if (!msg)
3620                 return -ENOMEM;
3621
3622         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3623                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3624                 nlmsg_free(msg);
3625                 return -ENOBUFS;
3626         }
3627
3628         return genlmsg_reply(msg, info);
3629 }
3630
3631 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3632         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3633         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3634         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3635         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3636         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3637         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3638 };
3639
3640 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3641 {
3642         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3643         int flag;
3644
3645         *mntrflags = 0;
3646
3647         if (!nla)
3648                 return -EINVAL;
3649
3650         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3651                 return -EINVAL;
3652
3653         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3654                 if (flags[flag])
3655                         *mntrflags |= (1<<flag);
3656
3657         *mntrflags |= MONITOR_FLAG_CHANGED;
3658
3659         return 0;
3660 }
3661
3662 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3663                                      enum nl80211_iftype type,
3664                                      struct genl_info *info,
3665                                      struct vif_params *params)
3666 {
3667         bool change = false;
3668         int err;
3669
3670         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3671                 if (type != NL80211_IFTYPE_MONITOR)
3672                         return -EINVAL;
3673
3674                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3675                                           &params->flags);
3676                 if (err)
3677                         return err;
3678
3679                 change = true;
3680         }
3681
3682         if (params->flags & MONITOR_FLAG_ACTIVE &&
3683             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3684                 return -EOPNOTSUPP;
3685
3686         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3687                 const u8 *mumimo_groups;
3688                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3689
3690                 if (type != NL80211_IFTYPE_MONITOR)
3691                         return -EINVAL;
3692
3693                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3694                         return -EOPNOTSUPP;
3695
3696                 mumimo_groups =
3697                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3698
3699                 /* bits 0 and 63 are reserved and must be zero */
3700                 if ((mumimo_groups[0] & BIT(0)) ||
3701                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3702                         return -EINVAL;
3703
3704                 params->vht_mumimo_groups = mumimo_groups;
3705                 change = true;
3706         }
3707
3708         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3709                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3710
3711                 if (type != NL80211_IFTYPE_MONITOR)
3712                         return -EINVAL;
3713
3714                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3715                         return -EOPNOTSUPP;
3716
3717                 params->vht_mumimo_follow_addr =
3718                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3719                 change = true;
3720         }
3721
3722         return change ? 1 : 0;
3723 }
3724
3725 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3726                                struct net_device *netdev, u8 use_4addr,
3727                                enum nl80211_iftype iftype)
3728 {
3729         if (!use_4addr) {
3730                 if (netdev && netif_is_bridge_port(netdev))
3731                         return -EBUSY;
3732                 return 0;
3733         }
3734
3735         switch (iftype) {
3736         case NL80211_IFTYPE_AP_VLAN:
3737                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3738                         return 0;
3739                 break;
3740         case NL80211_IFTYPE_STATION:
3741                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3742                         return 0;
3743                 break;
3744         default:
3745                 break;
3746         }
3747
3748         return -EOPNOTSUPP;
3749 }
3750
3751 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3752 {
3753         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3754         struct vif_params params;
3755         int err;
3756         enum nl80211_iftype otype, ntype;
3757         struct net_device *dev = info->user_ptr[1];
3758         bool change = false;
3759
3760         memset(&params, 0, sizeof(params));
3761
3762         otype = ntype = dev->ieee80211_ptr->iftype;
3763
3764         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3765                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3766                 if (otype != ntype)
3767                         change = true;
3768         }
3769
3770         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3771                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3772
3773                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3774                         return -EINVAL;
3775                 if (otype != NL80211_IFTYPE_MESH_POINT)
3776                         return -EINVAL;
3777                 if (netif_running(dev))
3778                         return -EBUSY;
3779
3780                 wdev_lock(wdev);
3781                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3782                              IEEE80211_MAX_MESH_ID_LEN);
3783                 wdev->mesh_id_up_len =
3784                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3785                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3786                        wdev->mesh_id_up_len);
3787                 wdev_unlock(wdev);
3788         }
3789
3790         if (info->attrs[NL80211_ATTR_4ADDR]) {
3791                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3792                 change = true;
3793                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3794                 if (err)
3795                         return err;
3796         } else {
3797                 params.use_4addr = -1;
3798         }
3799
3800         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3801         if (err < 0)
3802                 return err;
3803         if (err > 0)
3804                 change = true;
3805
3806         if (change)
3807                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3808         else
3809                 err = 0;
3810
3811         if (!err && params.use_4addr != -1)
3812                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3813
3814         if (change && !err) {
3815                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3816
3817                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3818         }
3819
3820         return err;
3821 }
3822
3823 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3824 {
3825         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3826         struct vif_params params;
3827         struct wireless_dev *wdev;
3828         struct sk_buff *msg;
3829         int err;
3830         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3831
3832         /* to avoid failing a new interface creation due to pending removal */
3833         cfg80211_destroy_ifaces(rdev);
3834
3835         memset(&params, 0, sizeof(params));
3836
3837         if (!info->attrs[NL80211_ATTR_IFNAME])
3838                 return -EINVAL;
3839
3840         if (info->attrs[NL80211_ATTR_IFTYPE])
3841                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3842
3843         if (!rdev->ops->add_virtual_intf)
3844                 return -EOPNOTSUPP;
3845
3846         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3847              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3848             info->attrs[NL80211_ATTR_MAC]) {
3849                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3850                            ETH_ALEN);
3851                 if (!is_valid_ether_addr(params.macaddr))
3852                         return -EADDRNOTAVAIL;
3853         }
3854
3855         if (info->attrs[NL80211_ATTR_4ADDR]) {
3856                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3857                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3858                 if (err)
3859                         return err;
3860         }
3861
3862         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3863                 return -EOPNOTSUPP;
3864
3865         err = nl80211_parse_mon_options(rdev, type, info, &params);
3866         if (err < 0)
3867                 return err;
3868
3869         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3870         if (!msg)
3871                 return -ENOMEM;
3872
3873         wdev = rdev_add_virtual_intf(rdev,
3874                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3875                                 NET_NAME_USER, type, &params);
3876         if (WARN_ON(!wdev)) {
3877                 nlmsg_free(msg);
3878                 return -EPROTO;
3879         } else if (IS_ERR(wdev)) {
3880                 nlmsg_free(msg);
3881                 return PTR_ERR(wdev);
3882         }
3883
3884         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3885                 wdev->owner_nlportid = info->snd_portid;
3886
3887         switch (type) {
3888         case NL80211_IFTYPE_MESH_POINT:
3889                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3890                         break;
3891                 wdev_lock(wdev);
3892                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3893                              IEEE80211_MAX_MESH_ID_LEN);
3894                 wdev->mesh_id_up_len =
3895                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3896                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3897                        wdev->mesh_id_up_len);
3898                 wdev_unlock(wdev);
3899                 break;
3900         case NL80211_IFTYPE_NAN:
3901         case NL80211_IFTYPE_P2P_DEVICE:
3902                 /*
3903                  * P2P Device and NAN do not have a netdev, so don't go
3904                  * through the netdev notifier and must be added here
3905                  */
3906                 cfg80211_init_wdev(wdev);
3907                 cfg80211_register_wdev(rdev, wdev);
3908                 break;
3909         default:
3910                 break;
3911         }
3912
3913         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3914                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3915                 nlmsg_free(msg);
3916                 return -ENOBUFS;
3917         }
3918
3919         return genlmsg_reply(msg, info);
3920 }
3921
3922 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3923 {
3924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3925         struct wireless_dev *wdev = info->user_ptr[1];
3926
3927         if (!rdev->ops->del_virtual_intf)
3928                 return -EOPNOTSUPP;
3929
3930         /*
3931          * If we remove a wireless device without a netdev then clear
3932          * user_ptr[1] so that nl80211_post_doit won't dereference it
3933          * to check if it needs to do dev_put(). Otherwise it crashes
3934          * since the wdev has been freed, unlike with a netdev where
3935          * we need the dev_put() for the netdev to really be freed.
3936          */
3937         if (!wdev->netdev)
3938                 info->user_ptr[1] = NULL;
3939
3940         return rdev_del_virtual_intf(rdev, wdev);
3941 }
3942
3943 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3944 {
3945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3946         struct net_device *dev = info->user_ptr[1];
3947         u16 noack_map;
3948
3949         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3950                 return -EINVAL;
3951
3952         if (!rdev->ops->set_noack_map)
3953                 return -EOPNOTSUPP;
3954
3955         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3956
3957         return rdev_set_noack_map(rdev, dev, noack_map);
3958 }
3959
3960 struct get_key_cookie {
3961         struct sk_buff *msg;
3962         int error;
3963         int idx;
3964 };
3965
3966 static void get_key_callback(void *c, struct key_params *params)
3967 {
3968         struct nlattr *key;
3969         struct get_key_cookie *cookie = c;
3970
3971         if ((params->key &&
3972              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3973                      params->key_len, params->key)) ||
3974             (params->seq &&
3975              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3976                      params->seq_len, params->seq)) ||
3977             (params->cipher &&
3978              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3979                          params->cipher)))
3980                 goto nla_put_failure;
3981
3982         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3983         if (!key)
3984                 goto nla_put_failure;
3985
3986         if ((params->key &&
3987              nla_put(cookie->msg, NL80211_KEY_DATA,
3988                      params->key_len, params->key)) ||
3989             (params->seq &&
3990              nla_put(cookie->msg, NL80211_KEY_SEQ,
3991                      params->seq_len, params->seq)) ||
3992             (params->cipher &&
3993              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3994                          params->cipher)))
3995                 goto nla_put_failure;
3996
3997         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3998                 goto nla_put_failure;
3999
4000         nla_nest_end(cookie->msg, key);
4001
4002         return;
4003  nla_put_failure:
4004         cookie->error = 1;
4005 }
4006
4007 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4008 {
4009         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4010         int err;
4011         struct net_device *dev = info->user_ptr[1];
4012         u8 key_idx = 0;
4013         const u8 *mac_addr = NULL;
4014         bool pairwise;
4015         struct get_key_cookie cookie = {
4016                 .error = 0,
4017         };
4018         void *hdr;
4019         struct sk_buff *msg;
4020         bool bigtk_support = false;
4021
4022         if (wiphy_ext_feature_isset(&rdev->wiphy,
4023                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4024                 bigtk_support = true;
4025
4026         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4027              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4028             wiphy_ext_feature_isset(&rdev->wiphy,
4029                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4030                 bigtk_support = true;
4031
4032         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4033                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4034
4035                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4036                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4037                         return -EINVAL;
4038                 }
4039         }
4040
4041         if (info->attrs[NL80211_ATTR_MAC])
4042                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4043
4044         pairwise = !!mac_addr;
4045         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4046                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4047
4048                 if (kt != NL80211_KEYTYPE_GROUP &&
4049                     kt != NL80211_KEYTYPE_PAIRWISE)
4050                         return -EINVAL;
4051                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4052         }
4053
4054         if (!rdev->ops->get_key)
4055                 return -EOPNOTSUPP;
4056
4057         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4058                 return -ENOENT;
4059
4060         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4061         if (!msg)
4062                 return -ENOMEM;
4063
4064         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4065                              NL80211_CMD_NEW_KEY);
4066         if (!hdr)
4067                 goto nla_put_failure;
4068
4069         cookie.msg = msg;
4070         cookie.idx = key_idx;
4071
4072         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4073             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4074                 goto nla_put_failure;
4075         if (mac_addr &&
4076             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4077                 goto nla_put_failure;
4078
4079         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4080                            get_key_callback);
4081
4082         if (err)
4083                 goto free_msg;
4084
4085         if (cookie.error)
4086                 goto nla_put_failure;
4087
4088         genlmsg_end(msg, hdr);
4089         return genlmsg_reply(msg, info);
4090
4091  nla_put_failure:
4092         err = -ENOBUFS;
4093  free_msg:
4094         nlmsg_free(msg);
4095         return err;
4096 }
4097
4098 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4099 {
4100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4101         struct key_parse key;
4102         int err;
4103         struct net_device *dev = info->user_ptr[1];
4104
4105         err = nl80211_parse_key(info, &key);
4106         if (err)
4107                 return err;
4108
4109         if (key.idx < 0)
4110                 return -EINVAL;
4111
4112         /* Only support setting default key and
4113          * Extended Key ID action NL80211_KEY_SET_TX.
4114          */
4115         if (!key.def && !key.defmgmt && !key.defbeacon &&
4116             !(key.p.mode == NL80211_KEY_SET_TX))
4117                 return -EINVAL;
4118
4119         wdev_lock(dev->ieee80211_ptr);
4120
4121         if (key.def) {
4122                 if (!rdev->ops->set_default_key) {
4123                         err = -EOPNOTSUPP;
4124                         goto out;
4125                 }
4126
4127                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4128                 if (err)
4129                         goto out;
4130
4131                 err = rdev_set_default_key(rdev, dev, key.idx,
4132                                                  key.def_uni, key.def_multi);
4133
4134                 if (err)
4135                         goto out;
4136
4137 #ifdef CONFIG_CFG80211_WEXT
4138                 dev->ieee80211_ptr->wext.default_key = key.idx;
4139 #endif
4140         } else if (key.defmgmt) {
4141                 if (key.def_uni || !key.def_multi) {
4142                         err = -EINVAL;
4143                         goto out;
4144                 }
4145
4146                 if (!rdev->ops->set_default_mgmt_key) {
4147                         err = -EOPNOTSUPP;
4148                         goto out;
4149                 }
4150
4151                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4152                 if (err)
4153                         goto out;
4154
4155                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4156                 if (err)
4157                         goto out;
4158
4159 #ifdef CONFIG_CFG80211_WEXT
4160                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4161 #endif
4162         } else if (key.defbeacon) {
4163                 if (key.def_uni || !key.def_multi) {
4164                         err = -EINVAL;
4165                         goto out;
4166                 }
4167
4168                 if (!rdev->ops->set_default_beacon_key) {
4169                         err = -EOPNOTSUPP;
4170                         goto out;
4171                 }
4172
4173                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4174                 if (err)
4175                         goto out;
4176
4177                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4178                 if (err)
4179                         goto out;
4180         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4181                    wiphy_ext_feature_isset(&rdev->wiphy,
4182                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4183                 u8 *mac_addr = NULL;
4184
4185                 if (info->attrs[NL80211_ATTR_MAC])
4186                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4187
4188                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4189                         err = -EINVAL;
4190                         goto out;
4191                 }
4192
4193                 err = rdev_add_key(rdev, dev, key.idx,
4194                                    NL80211_KEYTYPE_PAIRWISE,
4195                                    mac_addr, &key.p);
4196         } else {
4197                 err = -EINVAL;
4198         }
4199  out:
4200         wdev_unlock(dev->ieee80211_ptr);
4201
4202         return err;
4203 }
4204
4205 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4206 {
4207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4208         int err;
4209         struct net_device *dev = info->user_ptr[1];
4210         struct key_parse key;
4211         const u8 *mac_addr = NULL;
4212
4213         err = nl80211_parse_key(info, &key);
4214         if (err)
4215                 return err;
4216
4217         if (!key.p.key) {
4218                 GENL_SET_ERR_MSG(info, "no key");
4219                 return -EINVAL;
4220         }
4221
4222         if (info->attrs[NL80211_ATTR_MAC])
4223                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4224
4225         if (key.type == -1) {
4226                 if (mac_addr)
4227                         key.type = NL80211_KEYTYPE_PAIRWISE;
4228                 else
4229                         key.type = NL80211_KEYTYPE_GROUP;
4230         }
4231
4232         /* for now */
4233         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4234             key.type != NL80211_KEYTYPE_GROUP) {
4235                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4236                 return -EINVAL;
4237         }
4238
4239         if (key.type == NL80211_KEYTYPE_GROUP &&
4240             info->attrs[NL80211_ATTR_VLAN_ID])
4241                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4242
4243         if (!rdev->ops->add_key)
4244                 return -EOPNOTSUPP;
4245
4246         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4247                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4248                                            mac_addr)) {
4249                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4250                 return -EINVAL;
4251         }
4252
4253         wdev_lock(dev->ieee80211_ptr);
4254         err = nl80211_key_allowed(dev->ieee80211_ptr);
4255         if (err)
4256                 GENL_SET_ERR_MSG(info, "key not allowed");
4257         if (!err) {
4258                 err = rdev_add_key(rdev, dev, key.idx,
4259                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4260                                     mac_addr, &key.p);
4261                 if (err)
4262                         GENL_SET_ERR_MSG(info, "key addition failed");
4263         }
4264         wdev_unlock(dev->ieee80211_ptr);
4265
4266         return err;
4267 }
4268
4269 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4270 {
4271         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4272         int err;
4273         struct net_device *dev = info->user_ptr[1];
4274         u8 *mac_addr = NULL;
4275         struct key_parse key;
4276
4277         err = nl80211_parse_key(info, &key);
4278         if (err)
4279                 return err;
4280
4281         if (info->attrs[NL80211_ATTR_MAC])
4282                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4283
4284         if (key.type == -1) {
4285                 if (mac_addr)
4286                         key.type = NL80211_KEYTYPE_PAIRWISE;
4287                 else
4288                         key.type = NL80211_KEYTYPE_GROUP;
4289         }
4290
4291         /* for now */
4292         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4293             key.type != NL80211_KEYTYPE_GROUP)
4294                 return -EINVAL;
4295
4296         if (!cfg80211_valid_key_idx(rdev, key.idx,
4297                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4298                 return -EINVAL;
4299
4300         if (!rdev->ops->del_key)
4301                 return -EOPNOTSUPP;
4302
4303         wdev_lock(dev->ieee80211_ptr);
4304         err = nl80211_key_allowed(dev->ieee80211_ptr);
4305
4306         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4307             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4308                 err = -ENOENT;
4309
4310         if (!err)
4311                 err = rdev_del_key(rdev, dev, key.idx,
4312                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4313                                    mac_addr);
4314
4315 #ifdef CONFIG_CFG80211_WEXT
4316         if (!err) {
4317                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4318                         dev->ieee80211_ptr->wext.default_key = -1;
4319                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4320                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4321         }
4322 #endif
4323         wdev_unlock(dev->ieee80211_ptr);
4324
4325         return err;
4326 }
4327
4328 /* This function returns an error or the number of nested attributes */
4329 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4330 {
4331         struct nlattr *attr;
4332         int n_entries = 0, tmp;
4333
4334         nla_for_each_nested(attr, nl_attr, tmp) {
4335                 if (nla_len(attr) != ETH_ALEN)
4336                         return -EINVAL;
4337
4338                 n_entries++;
4339         }
4340
4341         return n_entries;
4342 }
4343
4344 /*
4345  * This function parses ACL information and allocates memory for ACL data.
4346  * On successful return, the calling function is responsible to free the
4347  * ACL buffer returned by this function.
4348  */
4349 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4350                                                 struct genl_info *info)
4351 {
4352         enum nl80211_acl_policy acl_policy;
4353         struct nlattr *attr;
4354         struct cfg80211_acl_data *acl;
4355         int i = 0, n_entries, tmp;
4356
4357         if (!wiphy->max_acl_mac_addrs)
4358                 return ERR_PTR(-EOPNOTSUPP);
4359
4360         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4361                 return ERR_PTR(-EINVAL);
4362
4363         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4364         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4365             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4366                 return ERR_PTR(-EINVAL);
4367
4368         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4369                 return ERR_PTR(-EINVAL);
4370
4371         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4372         if (n_entries < 0)
4373                 return ERR_PTR(n_entries);
4374
4375         if (n_entries > wiphy->max_acl_mac_addrs)
4376                 return ERR_PTR(-ENOTSUPP);
4377
4378         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4379         if (!acl)
4380                 return ERR_PTR(-ENOMEM);
4381
4382         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4383                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4384                 i++;
4385         }
4386
4387         acl->n_acl_entries = n_entries;
4388         acl->acl_policy = acl_policy;
4389
4390         return acl;
4391 }
4392
4393 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4394 {
4395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4396         struct net_device *dev = info->user_ptr[1];
4397         struct cfg80211_acl_data *acl;
4398         int err;
4399
4400         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4401             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4402                 return -EOPNOTSUPP;
4403
4404         if (!dev->ieee80211_ptr->beacon_interval)
4405                 return -EINVAL;
4406
4407         acl = parse_acl_data(&rdev->wiphy, info);
4408         if (IS_ERR(acl))
4409                 return PTR_ERR(acl);
4410
4411         err = rdev_set_mac_acl(rdev, dev, acl);
4412
4413         kfree(acl);
4414
4415         return err;
4416 }
4417
4418 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4419                            u8 *rates, u8 rates_len)
4420 {
4421         u8 i;
4422         u32 mask = 0;
4423
4424         for (i = 0; i < rates_len; i++) {
4425                 int rate = (rates[i] & 0x7f) * 5;
4426                 int ridx;
4427
4428                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4429                         struct ieee80211_rate *srate =
4430                                 &sband->bitrates[ridx];
4431                         if (rate == srate->bitrate) {
4432                                 mask |= 1 << ridx;
4433                                 break;
4434                         }
4435                 }
4436                 if (ridx == sband->n_bitrates)
4437                         return 0; /* rate not found */
4438         }
4439
4440         return mask;
4441 }
4442
4443 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4444                                u8 *rates, u8 rates_len,
4445                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4446 {
4447         u8 i;
4448
4449         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4450
4451         for (i = 0; i < rates_len; i++) {
4452                 int ridx, rbit;
4453
4454                 ridx = rates[i] / 8;
4455                 rbit = BIT(rates[i] % 8);
4456
4457                 /* check validity */
4458                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4459                         return false;
4460
4461                 /* check availability */
4462                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4463                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4464                         mcs[ridx] |= rbit;
4465                 else
4466                         return false;
4467         }
4468
4469         return true;
4470 }
4471
4472 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4473 {
4474         u16 mcs_mask = 0;
4475
4476         switch (vht_mcs_map) {
4477         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4478                 break;
4479         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4480                 mcs_mask = 0x00FF;
4481                 break;
4482         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4483                 mcs_mask = 0x01FF;
4484                 break;
4485         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4486                 mcs_mask = 0x03FF;
4487                 break;
4488         default:
4489                 break;
4490         }
4491
4492         return mcs_mask;
4493 }
4494
4495 static void vht_build_mcs_mask(u16 vht_mcs_map,
4496                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4497 {
4498         u8 nss;
4499
4500         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4501                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4502                 vht_mcs_map >>= 2;
4503         }
4504 }
4505
4506 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4507                              struct nl80211_txrate_vht *txrate,
4508                              u16 mcs[NL80211_VHT_NSS_MAX])
4509 {
4510         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4511         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4512         u8 i;
4513
4514         if (!sband->vht_cap.vht_supported)
4515                 return false;
4516
4517         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4518
4519         /* Build vht_mcs_mask from VHT capabilities */
4520         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4521
4522         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4523                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4524                         mcs[i] = txrate->mcs[i];
4525                 else
4526                         return false;
4527         }
4528
4529         return true;
4530 }
4531
4532 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4533 {
4534         switch (he_mcs_map) {
4535         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4536                 return 0;
4537         case IEEE80211_HE_MCS_SUPPORT_0_7:
4538                 return 0x00FF;
4539         case IEEE80211_HE_MCS_SUPPORT_0_9:
4540                 return 0x03FF;
4541         case IEEE80211_HE_MCS_SUPPORT_0_11:
4542                 return 0xFFF;
4543         default:
4544                 break;
4545         }
4546         return 0;
4547 }
4548
4549 static void he_build_mcs_mask(u16 he_mcs_map,
4550                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4551 {
4552         u8 nss;
4553
4554         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4555                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4556                 he_mcs_map >>= 2;
4557         }
4558 }
4559
4560 static u16 he_get_txmcsmap(struct genl_info *info,
4561                            const struct ieee80211_sta_he_cap *he_cap)
4562 {
4563         struct net_device *dev = info->user_ptr[1];
4564         struct wireless_dev *wdev = dev->ieee80211_ptr;
4565         __le16  tx_mcs;
4566
4567         switch (wdev->chandef.width) {
4568         case NL80211_CHAN_WIDTH_80P80:
4569                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4570                 break;
4571         case NL80211_CHAN_WIDTH_160:
4572                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4573                 break;
4574         default:
4575                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4576                 break;
4577         }
4578         return le16_to_cpu(tx_mcs);
4579 }
4580
4581 static bool he_set_mcs_mask(struct genl_info *info,
4582                             struct wireless_dev *wdev,
4583                             struct ieee80211_supported_band *sband,
4584                             struct nl80211_txrate_he *txrate,
4585                             u16 mcs[NL80211_HE_NSS_MAX])
4586 {
4587         const struct ieee80211_sta_he_cap *he_cap;
4588         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4589         u16 tx_mcs_map = 0;
4590         u8 i;
4591
4592         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4593         if (!he_cap)
4594                 return false;
4595
4596         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4597
4598         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4599
4600         /* Build he_mcs_mask from HE capabilities */
4601         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4602
4603         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4604                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4605                         mcs[i] = txrate->mcs[i];
4606                 else
4607                         return false;
4608         }
4609
4610         return true;
4611 }
4612
4613 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4614                                          struct nlattr *attrs[],
4615                                          enum nl80211_attrs attr,
4616                                          struct cfg80211_bitrate_mask *mask,
4617                                          struct net_device *dev)
4618 {
4619         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4620         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4621         struct wireless_dev *wdev = dev->ieee80211_ptr;
4622         int rem, i;
4623         struct nlattr *tx_rates;
4624         struct ieee80211_supported_band *sband;
4625         u16 vht_tx_mcs_map, he_tx_mcs_map;
4626
4627         memset(mask, 0, sizeof(*mask));
4628         /* Default to all rates enabled */
4629         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4630                 const struct ieee80211_sta_he_cap *he_cap;
4631
4632                 sband = rdev->wiphy.bands[i];
4633
4634                 if (!sband)
4635                         continue;
4636
4637                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4638                 memcpy(mask->control[i].ht_mcs,
4639                        sband->ht_cap.mcs.rx_mask,
4640                        sizeof(mask->control[i].ht_mcs));
4641
4642                 if (sband->vht_cap.vht_supported) {
4643                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4644                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4645                 }
4646
4647                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4648                 if (!he_cap)
4649                         continue;
4650
4651                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4652                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4653
4654                 mask->control[i].he_gi = 0xFF;
4655                 mask->control[i].he_ltf = 0xFF;
4656         }
4657
4658         /* if no rates are given set it back to the defaults */
4659         if (!attrs[attr])
4660                 goto out;
4661
4662         /* The nested attribute uses enum nl80211_band as the index. This maps
4663          * directly to the enum nl80211_band values used in cfg80211.
4664          */
4665         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4666         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4667                 enum nl80211_band band = nla_type(tx_rates);
4668                 int err;
4669
4670                 if (band < 0 || band >= NUM_NL80211_BANDS)
4671                         return -EINVAL;
4672                 sband = rdev->wiphy.bands[band];
4673                 if (sband == NULL)
4674                         return -EINVAL;
4675                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4676                                                   tx_rates,
4677                                                   nl80211_txattr_policy,
4678                                                   info->extack);
4679                 if (err)
4680                         return err;
4681                 if (tb[NL80211_TXRATE_LEGACY]) {
4682                         mask->control[band].legacy = rateset_to_mask(
4683                                 sband,
4684                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4685                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4686                         if ((mask->control[band].legacy == 0) &&
4687                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4688                                 return -EINVAL;
4689                 }
4690                 if (tb[NL80211_TXRATE_HT]) {
4691                         if (!ht_rateset_to_mask(
4692                                         sband,
4693                                         nla_data(tb[NL80211_TXRATE_HT]),
4694                                         nla_len(tb[NL80211_TXRATE_HT]),
4695                                         mask->control[band].ht_mcs))
4696                                 return -EINVAL;
4697                 }
4698                 if (tb[NL80211_TXRATE_VHT]) {
4699                         if (!vht_set_mcs_mask(
4700                                         sband,
4701                                         nla_data(tb[NL80211_TXRATE_VHT]),
4702                                         mask->control[band].vht_mcs))
4703                                 return -EINVAL;
4704                 }
4705                 if (tb[NL80211_TXRATE_GI]) {
4706                         mask->control[band].gi =
4707                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4708                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4709                                 return -EINVAL;
4710                 }
4711                 if (tb[NL80211_TXRATE_HE] &&
4712                     !he_set_mcs_mask(info, wdev, sband,
4713                                      nla_data(tb[NL80211_TXRATE_HE]),
4714                                      mask->control[band].he_mcs))
4715                         return -EINVAL;
4716                 if (tb[NL80211_TXRATE_HE_GI])
4717                         mask->control[band].he_gi =
4718                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4719                 if (tb[NL80211_TXRATE_HE_LTF])
4720                         mask->control[band].he_ltf =
4721                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4722
4723                 if (mask->control[band].legacy == 0) {
4724                         /* don't allow empty legacy rates if HT, VHT or HE
4725                          * are not even supported.
4726                          */
4727                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4728                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4729                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4730                                 return -EINVAL;
4731
4732                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4733                                 if (mask->control[band].ht_mcs[i])
4734                                         goto out;
4735
4736                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4737                                 if (mask->control[band].vht_mcs[i])
4738                                         goto out;
4739
4740                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4741                                 if (mask->control[band].he_mcs[i])
4742                                         goto out;
4743
4744                         /* legacy and mcs rates may not be both empty */
4745                         return -EINVAL;
4746                 }
4747         }
4748
4749 out:
4750         return 0;
4751 }
4752
4753 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4754                                    enum nl80211_band band,
4755                                    struct cfg80211_bitrate_mask *beacon_rate)
4756 {
4757         u32 count_ht, count_vht, i;
4758         u32 rate = beacon_rate->control[band].legacy;
4759
4760         /* Allow only one rate */
4761         if (hweight32(rate) > 1)
4762                 return -EINVAL;
4763
4764         count_ht = 0;
4765         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4766                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4767                         return -EINVAL;
4768                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4769                         count_ht++;
4770                         if (count_ht > 1)
4771                                 return -EINVAL;
4772                 }
4773                 if (count_ht && rate)
4774                         return -EINVAL;
4775         }
4776
4777         count_vht = 0;
4778         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4779                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4780                         return -EINVAL;
4781                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4782                         count_vht++;
4783                         if (count_vht > 1)
4784                                 return -EINVAL;
4785                 }
4786                 if (count_vht && rate)
4787                         return -EINVAL;
4788         }
4789
4790         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4791                 return -EINVAL;
4792
4793         if (rate &&
4794             !wiphy_ext_feature_isset(&rdev->wiphy,
4795                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4796                 return -EINVAL;
4797         if (count_ht &&
4798             !wiphy_ext_feature_isset(&rdev->wiphy,
4799                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4800                 return -EINVAL;
4801         if (count_vht &&
4802             !wiphy_ext_feature_isset(&rdev->wiphy,
4803                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4804                 return -EINVAL;
4805
4806         return 0;
4807 }
4808
4809 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4810                                 struct nlattr *attrs[],
4811                                 struct cfg80211_beacon_data *bcn)
4812 {
4813         bool haveinfo = false;
4814         int err;
4815
4816         memset(bcn, 0, sizeof(*bcn));
4817
4818         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4819                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4820                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4821                 if (!bcn->head_len)
4822                         return -EINVAL;
4823                 haveinfo = true;
4824         }
4825
4826         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4827                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4828                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4829                 haveinfo = true;
4830         }
4831
4832         if (!haveinfo)
4833                 return -EINVAL;
4834
4835         if (attrs[NL80211_ATTR_IE]) {
4836                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4837                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4838         }
4839
4840         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4841                 bcn->proberesp_ies =
4842                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4843                 bcn->proberesp_ies_len =
4844                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4845         }
4846
4847         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4848                 bcn->assocresp_ies =
4849                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4850                 bcn->assocresp_ies_len =
4851                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4852         }
4853
4854         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4855                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4856                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4857         }
4858
4859         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4860                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4861
4862                 err = nla_parse_nested_deprecated(tb,
4863                                                   NL80211_FTM_RESP_ATTR_MAX,
4864                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4865                                                   NULL, NULL);
4866                 if (err)
4867                         return err;
4868
4869                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4870                     wiphy_ext_feature_isset(&rdev->wiphy,
4871                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4872                         bcn->ftm_responder = 1;
4873                 else
4874                         return -EOPNOTSUPP;
4875
4876                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4877                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4878                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4879                 }
4880
4881                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4882                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4883                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4884                 }
4885         } else {
4886                 bcn->ftm_responder = -1;
4887         }
4888
4889         return 0;
4890 }
4891
4892 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4893                                     struct ieee80211_he_obss_pd *he_obss_pd)
4894 {
4895         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4896         int err;
4897
4898         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4899                                he_obss_pd_policy, NULL);
4900         if (err)
4901                 return err;
4902
4903         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4904                 return -EINVAL;
4905
4906         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4907
4908         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4909                 he_obss_pd->min_offset =
4910                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4911         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4912                 he_obss_pd->max_offset =
4913                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4914         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4915                 he_obss_pd->non_srg_max_offset =
4916                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4917
4918         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4919                 return -EINVAL;
4920
4921         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4922                 memcpy(he_obss_pd->bss_color_bitmap,
4923                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4924                        sizeof(he_obss_pd->bss_color_bitmap));
4925
4926         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4927                 memcpy(he_obss_pd->partial_bssid_bitmap,
4928                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4929                        sizeof(he_obss_pd->partial_bssid_bitmap));
4930
4931         he_obss_pd->enable = true;
4932
4933         return 0;
4934 }
4935
4936 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4937                                       struct cfg80211_he_bss_color *he_bss_color)
4938 {
4939         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4940         int err;
4941
4942         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4943                                he_bss_color_policy, NULL);
4944         if (err)
4945                 return err;
4946
4947         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4948                 return -EINVAL;
4949
4950         he_bss_color->color =
4951                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4952         he_bss_color->enabled =
4953                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4954         he_bss_color->partial =
4955                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4956
4957         return 0;
4958 }
4959
4960 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4961                                         struct nlattr *attrs,
4962                                         struct cfg80211_ap_settings *params)
4963 {
4964         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4965         int ret;
4966         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
4967
4968         if (!wiphy_ext_feature_isset(&rdev->wiphy,
4969                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
4970                 return -EINVAL;
4971
4972         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4973                                NULL, NULL);
4974         if (ret)
4975                 return ret;
4976
4977         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4978             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4979             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4980                 return -EINVAL;
4981
4982         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4983         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4984         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4985         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4986
4987         return 0;
4988 }
4989
4990 static int
4991 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4992                                      struct nlattr *attrs,
4993                                      struct cfg80211_ap_settings *params)
4994 {
4995         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4996         int ret;
4997         struct cfg80211_unsol_bcast_probe_resp *presp =
4998                                         &params->unsol_bcast_probe_resp;
4999
5000         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5001                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5002                 return -EINVAL;
5003
5004         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5005                                attrs, NULL, NULL);
5006         if (ret)
5007                 return ret;
5008
5009         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5010             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5011                 return -EINVAL;
5012
5013         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5014         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5015         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5016         return 0;
5017 }
5018
5019 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5020                                             const u8 *rates)
5021 {
5022         int i;
5023
5024         if (!rates)
5025                 return;
5026
5027         for (i = 0; i < rates[1]; i++) {
5028                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5029                         params->ht_required = true;
5030                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5031                         params->vht_required = true;
5032                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5033                         params->he_required = true;
5034         }
5035 }
5036
5037 /*
5038  * Since the nl80211 API didn't include, from the beginning, attributes about
5039  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5040  * benefit of drivers that rebuild IEs in the firmware.
5041  */
5042 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5043 {
5044         const struct cfg80211_beacon_data *bcn = &params->beacon;
5045         size_t ies_len = bcn->tail_len;
5046         const u8 *ies = bcn->tail;
5047         const u8 *rates;
5048         const u8 *cap;
5049
5050         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5051         nl80211_check_ap_rate_selectors(params, rates);
5052
5053         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5054         nl80211_check_ap_rate_selectors(params, rates);
5055
5056         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5057         if (cap && cap[1] >= sizeof(*params->ht_cap))
5058                 params->ht_cap = (void *)(cap + 2);
5059         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5060         if (cap && cap[1] >= sizeof(*params->vht_cap))
5061                 params->vht_cap = (void *)(cap + 2);
5062         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5063         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5064                 params->he_cap = (void *)(cap + 3);
5065         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5066         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5067                 params->he_oper = (void *)(cap + 3);
5068 }
5069
5070 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5071                                    struct cfg80211_ap_settings *params)
5072 {
5073         struct wireless_dev *wdev;
5074         bool ret = false;
5075
5076         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5077                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5078                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5079                         continue;
5080
5081                 if (!wdev->preset_chandef.chan)
5082                         continue;
5083
5084                 params->chandef = wdev->preset_chandef;
5085                 ret = true;
5086                 break;
5087         }
5088
5089         return ret;
5090 }
5091
5092 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5093                                     enum nl80211_auth_type auth_type,
5094                                     enum nl80211_commands cmd)
5095 {
5096         if (auth_type > NL80211_AUTHTYPE_MAX)
5097                 return false;
5098
5099         switch (cmd) {
5100         case NL80211_CMD_AUTHENTICATE:
5101                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5102                     auth_type == NL80211_AUTHTYPE_SAE)
5103                         return false;
5104                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5105                                              NL80211_EXT_FEATURE_FILS_STA) &&
5106                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5107                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5108                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5109                         return false;
5110                 return true;
5111         case NL80211_CMD_CONNECT:
5112                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5113                     !wiphy_ext_feature_isset(&rdev->wiphy,
5114                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5115                     auth_type == NL80211_AUTHTYPE_SAE)
5116                         return false;
5117
5118                 /* FILS with SK PFS or PK not supported yet */
5119                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5120                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5121                         return false;
5122                 if (!wiphy_ext_feature_isset(
5123                             &rdev->wiphy,
5124                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5125                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5126                         return false;
5127                 return true;
5128         case NL80211_CMD_START_AP:
5129                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5130                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5131                     auth_type == NL80211_AUTHTYPE_SAE)
5132                         return false;
5133                 /* FILS not supported yet */
5134                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5135                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5136                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5137                         return false;
5138                 return true;
5139         default:
5140                 return false;
5141         }
5142 }
5143
5144 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5145 {
5146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5147         struct net_device *dev = info->user_ptr[1];
5148         struct wireless_dev *wdev = dev->ieee80211_ptr;
5149         struct cfg80211_ap_settings params;
5150         int err;
5151
5152         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5153             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5154                 return -EOPNOTSUPP;
5155
5156         if (!rdev->ops->start_ap)
5157                 return -EOPNOTSUPP;
5158
5159         if (wdev->beacon_interval)
5160                 return -EALREADY;
5161
5162         memset(&params, 0, sizeof(params));
5163
5164         /* these are required for START_AP */
5165         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5166             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5167             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5168                 return -EINVAL;
5169
5170         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5171         if (err)
5172                 return err;
5173
5174         params.beacon_interval =
5175                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5176         params.dtim_period =
5177                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5178
5179         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5180                                            params.beacon_interval);
5181         if (err)
5182                 return err;
5183
5184         /*
5185          * In theory, some of these attributes should be required here
5186          * but since they were not used when the command was originally
5187          * added, keep them optional for old user space programs to let
5188          * them continue to work with drivers that do not need the
5189          * additional information -- drivers must check!
5190          */
5191         if (info->attrs[NL80211_ATTR_SSID]) {
5192                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5193                 params.ssid_len =
5194                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5195                 if (params.ssid_len == 0)
5196                         return -EINVAL;
5197         }
5198
5199         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5200                 params.hidden_ssid = nla_get_u32(
5201                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5202
5203         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5204
5205         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5206                 params.auth_type = nla_get_u32(
5207                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5208                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5209                                              NL80211_CMD_START_AP))
5210                         return -EINVAL;
5211         } else
5212                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5213
5214         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5215                                       NL80211_MAX_NR_CIPHER_SUITES);
5216         if (err)
5217                 return err;
5218
5219         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5220                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5221                         return -EOPNOTSUPP;
5222                 params.inactivity_timeout = nla_get_u16(
5223                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5224         }
5225
5226         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5227                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5228                         return -EINVAL;
5229                 params.p2p_ctwindow =
5230                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5231                 if (params.p2p_ctwindow != 0 &&
5232                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5233                         return -EINVAL;
5234         }
5235
5236         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5237                 u8 tmp;
5238
5239                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5240                         return -EINVAL;
5241                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5242                 params.p2p_opp_ps = tmp;
5243                 if (params.p2p_opp_ps != 0 &&
5244                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5245                         return -EINVAL;
5246         }
5247
5248         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5249                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5250                 if (err)
5251                         return err;
5252         } else if (wdev->preset_chandef.chan) {
5253                 params.chandef = wdev->preset_chandef;
5254         } else if (!nl80211_get_ap_channel(rdev, &params))
5255                 return -EINVAL;
5256
5257         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5258                                            wdev->iftype))
5259                 return -EINVAL;
5260
5261         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5262                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5263                                                     NL80211_ATTR_TX_RATES,
5264                                                     &params.beacon_rate,
5265                                                     dev);
5266                 if (err)
5267                         return err;
5268
5269                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5270                                               &params.beacon_rate);
5271                 if (err)
5272                         return err;
5273         }
5274
5275         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5276                 params.smps_mode =
5277                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5278                 switch (params.smps_mode) {
5279                 case NL80211_SMPS_OFF:
5280                         break;
5281                 case NL80211_SMPS_STATIC:
5282                         if (!(rdev->wiphy.features &
5283                               NL80211_FEATURE_STATIC_SMPS))
5284                                 return -EINVAL;
5285                         break;
5286                 case NL80211_SMPS_DYNAMIC:
5287                         if (!(rdev->wiphy.features &
5288                               NL80211_FEATURE_DYNAMIC_SMPS))
5289                                 return -EINVAL;
5290                         break;
5291                 default:
5292                         return -EINVAL;
5293                 }
5294         } else {
5295                 params.smps_mode = NL80211_SMPS_OFF;
5296         }
5297
5298         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5299         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5300                 return -EOPNOTSUPP;
5301
5302         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5303                 params.acl = parse_acl_data(&rdev->wiphy, info);
5304                 if (IS_ERR(params.acl))
5305                         return PTR_ERR(params.acl);
5306         }
5307
5308         params.twt_responder =
5309                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5310
5311         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5312                 err = nl80211_parse_he_obss_pd(
5313                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5314                                         &params.he_obss_pd);
5315                 if (err)
5316                         goto out;
5317         }
5318
5319         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5320                 err = nl80211_parse_he_bss_color(
5321                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5322                                         &params.he_bss_color);
5323                 if (err)
5324                         goto out;
5325         }
5326
5327         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5328                 err = nl80211_parse_fils_discovery(rdev,
5329                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5330                                                    &params);
5331                 if (err)
5332                         goto out;
5333         }
5334
5335         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5336                 err = nl80211_parse_unsol_bcast_probe_resp(
5337                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5338                         &params);
5339                 if (err)
5340                         goto out;
5341         }
5342
5343         nl80211_calculate_ap_params(&params);
5344
5345         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5346                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5347
5348         wdev_lock(wdev);
5349         err = rdev_start_ap(rdev, dev, &params);
5350         if (!err) {
5351                 wdev->preset_chandef = params.chandef;
5352                 wdev->beacon_interval = params.beacon_interval;
5353                 wdev->chandef = params.chandef;
5354                 wdev->ssid_len = params.ssid_len;
5355                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5356
5357                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5358                         wdev->conn_owner_nlportid = info->snd_portid;
5359         }
5360         wdev_unlock(wdev);
5361
5362 out:
5363         kfree(params.acl);
5364
5365         return err;
5366 }
5367
5368 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5369 {
5370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5371         struct net_device *dev = info->user_ptr[1];
5372         struct wireless_dev *wdev = dev->ieee80211_ptr;
5373         struct cfg80211_beacon_data params;
5374         int err;
5375
5376         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5377             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5378                 return -EOPNOTSUPP;
5379
5380         if (!rdev->ops->change_beacon)
5381                 return -EOPNOTSUPP;
5382
5383         if (!wdev->beacon_interval)
5384                 return -EINVAL;
5385
5386         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5387         if (err)
5388                 return err;
5389
5390         wdev_lock(wdev);
5391         err = rdev_change_beacon(rdev, dev, &params);
5392         wdev_unlock(wdev);
5393
5394         return err;
5395 }
5396
5397 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5398 {
5399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5400         struct net_device *dev = info->user_ptr[1];
5401
5402         return cfg80211_stop_ap(rdev, dev, false);
5403 }
5404
5405 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5406         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5407         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5408         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5409         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5410         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5411         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5412 };
5413
5414 static int parse_station_flags(struct genl_info *info,
5415                                enum nl80211_iftype iftype,
5416                                struct station_parameters *params)
5417 {
5418         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5419         struct nlattr *nla;
5420         int flag;
5421
5422         /*
5423          * Try parsing the new attribute first so userspace
5424          * can specify both for older kernels.
5425          */
5426         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5427         if (nla) {
5428                 struct nl80211_sta_flag_update *sta_flags;
5429
5430                 sta_flags = nla_data(nla);
5431                 params->sta_flags_mask = sta_flags->mask;
5432                 params->sta_flags_set = sta_flags->set;
5433                 params->sta_flags_set &= params->sta_flags_mask;
5434                 if ((params->sta_flags_mask |
5435                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5436                         return -EINVAL;
5437                 return 0;
5438         }
5439
5440         /* if present, parse the old attribute */
5441
5442         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5443         if (!nla)
5444                 return 0;
5445
5446         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5447                 return -EINVAL;
5448
5449         /*
5450          * Only allow certain flags for interface types so that
5451          * other attributes are silently ignored. Remember that
5452          * this is backward compatibility code with old userspace
5453          * and shouldn't be hit in other cases anyway.
5454          */
5455         switch (iftype) {
5456         case NL80211_IFTYPE_AP:
5457         case NL80211_IFTYPE_AP_VLAN:
5458         case NL80211_IFTYPE_P2P_GO:
5459                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5460                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5461                                          BIT(NL80211_STA_FLAG_WME) |
5462                                          BIT(NL80211_STA_FLAG_MFP);
5463                 break;
5464         case NL80211_IFTYPE_P2P_CLIENT:
5465         case NL80211_IFTYPE_STATION:
5466                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5467                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5468                 break;
5469         case NL80211_IFTYPE_MESH_POINT:
5470                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5471                                          BIT(NL80211_STA_FLAG_MFP) |
5472                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5473                 break;
5474         default:
5475                 return -EINVAL;
5476         }
5477
5478         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5479                 if (flags[flag]) {
5480                         params->sta_flags_set |= (1<<flag);
5481
5482                         /* no longer support new API additions in old API */
5483                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5484                                 return -EINVAL;
5485                 }
5486         }
5487
5488         return 0;
5489 }
5490
5491 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5492 {
5493         struct nlattr *rate;
5494         u32 bitrate;
5495         u16 bitrate_compat;
5496         enum nl80211_rate_info rate_flg;
5497
5498         rate = nla_nest_start_noflag(msg, attr);
5499         if (!rate)
5500                 return false;
5501
5502         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5503         bitrate = cfg80211_calculate_bitrate(info);
5504         /* report 16-bit bitrate only if we can */
5505         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5506         if (bitrate > 0 &&
5507             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5508                 return false;
5509         if (bitrate_compat > 0 &&
5510             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5511                 return false;
5512
5513         switch (info->bw) {
5514         case RATE_INFO_BW_5:
5515                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5516                 break;
5517         case RATE_INFO_BW_10:
5518                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5519                 break;
5520         default:
5521                 WARN_ON(1);
5522                 fallthrough;
5523         case RATE_INFO_BW_20:
5524                 rate_flg = 0;
5525                 break;
5526         case RATE_INFO_BW_40:
5527                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5528                 break;
5529         case RATE_INFO_BW_80:
5530                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5531                 break;
5532         case RATE_INFO_BW_160:
5533                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5534                 break;
5535         case RATE_INFO_BW_HE_RU:
5536                 rate_flg = 0;
5537                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5538         }
5539
5540         if (rate_flg && nla_put_flag(msg, rate_flg))
5541                 return false;
5542
5543         if (info->flags & RATE_INFO_FLAGS_MCS) {
5544                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5545                         return false;
5546                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5547                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5548                         return false;
5549         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5550                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5551                         return false;
5552                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5553                         return false;
5554                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5555                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5556                         return false;
5557         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5558                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5559                         return false;
5560                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5561                         return false;
5562                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5563                         return false;
5564                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5565                         return false;
5566                 if (info->bw == RATE_INFO_BW_HE_RU &&
5567                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5568                                info->he_ru_alloc))
5569                         return false;
5570         }
5571
5572         nla_nest_end(msg, rate);
5573         return true;
5574 }
5575
5576 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5577                                int id)
5578 {
5579         void *attr;
5580         int i = 0;
5581
5582         if (!mask)
5583                 return true;
5584
5585         attr = nla_nest_start_noflag(msg, id);
5586         if (!attr)
5587                 return false;
5588
5589         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5590                 if (!(mask & BIT(i)))
5591                         continue;
5592
5593                 if (nla_put_u8(msg, i, signal[i]))
5594                         return false;
5595         }
5596
5597         nla_nest_end(msg, attr);
5598
5599         return true;
5600 }
5601
5602 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5603                                 u32 seq, int flags,
5604                                 struct cfg80211_registered_device *rdev,
5605                                 struct net_device *dev,
5606                                 const u8 *mac_addr, struct station_info *sinfo)
5607 {
5608         void *hdr;
5609         struct nlattr *sinfoattr, *bss_param;
5610
5611         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5612         if (!hdr) {
5613                 cfg80211_sinfo_release_content(sinfo);
5614                 return -1;
5615         }
5616
5617         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5618             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5619             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5620                 goto nla_put_failure;
5621
5622         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5623         if (!sinfoattr)
5624                 goto nla_put_failure;
5625
5626 #define PUT_SINFO(attr, memb, type) do {                                \
5627         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5628         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5629             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5630                              sinfo->memb))                              \
5631                 goto nla_put_failure;                                   \
5632         } while (0)
5633 #define PUT_SINFO_U64(attr, memb) do {                                  \
5634         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5635             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5636                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5637                 goto nla_put_failure;                                   \
5638         } while (0)
5639
5640         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5641         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5642         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5643
5644         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5645                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5646             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5647                         (u32)sinfo->rx_bytes))
5648                 goto nla_put_failure;
5649
5650         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5651                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5652             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5653                         (u32)sinfo->tx_bytes))
5654                 goto nla_put_failure;
5655
5656         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5657         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5658         PUT_SINFO(LLID, llid, u16);
5659         PUT_SINFO(PLID, plid, u16);
5660         PUT_SINFO(PLINK_STATE, plink_state, u8);
5661         PUT_SINFO_U64(RX_DURATION, rx_duration);
5662         PUT_SINFO_U64(TX_DURATION, tx_duration);
5663
5664         if (wiphy_ext_feature_isset(&rdev->wiphy,
5665                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5666                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5667
5668         switch (rdev->wiphy.signal_type) {
5669         case CFG80211_SIGNAL_TYPE_MBM:
5670                 PUT_SINFO(SIGNAL, signal, u8);
5671                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5672                 break;
5673         default:
5674                 break;
5675         }
5676         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5677                 if (!nl80211_put_signal(msg, sinfo->chains,
5678                                         sinfo->chain_signal,
5679                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5680                         goto nla_put_failure;
5681         }
5682         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5683                 if (!nl80211_put_signal(msg, sinfo->chains,
5684                                         sinfo->chain_signal_avg,
5685                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5686                         goto nla_put_failure;
5687         }
5688         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5689                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5690                                           NL80211_STA_INFO_TX_BITRATE))
5691                         goto nla_put_failure;
5692         }
5693         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5694                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5695                                           NL80211_STA_INFO_RX_BITRATE))
5696                         goto nla_put_failure;
5697         }
5698
5699         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5700         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5701         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5702         PUT_SINFO(TX_FAILED, tx_failed, u32);
5703         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5704         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5705         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5706         PUT_SINFO(LOCAL_PM, local_pm, u32);
5707         PUT_SINFO(PEER_PM, peer_pm, u32);
5708         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5709         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5710         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5711
5712         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5713                 bss_param = nla_nest_start_noflag(msg,
5714                                                   NL80211_STA_INFO_BSS_PARAM);
5715                 if (!bss_param)
5716                         goto nla_put_failure;
5717
5718                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5719                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5720                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5721                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5722                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5723                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5724                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5725                                sinfo->bss_param.dtim_period) ||
5726                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5727                                 sinfo->bss_param.beacon_interval))
5728                         goto nla_put_failure;
5729
5730                 nla_nest_end(msg, bss_param);
5731         }
5732         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5733             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5734                     sizeof(struct nl80211_sta_flag_update),
5735                     &sinfo->sta_flags))
5736                 goto nla_put_failure;
5737
5738         PUT_SINFO_U64(T_OFFSET, t_offset);
5739         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5740         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5741         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5742         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5743         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5744         if (wiphy_ext_feature_isset(&rdev->wiphy,
5745                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5746                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5747                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5748         }
5749
5750 #undef PUT_SINFO
5751 #undef PUT_SINFO_U64
5752
5753         if (sinfo->pertid) {
5754                 struct nlattr *tidsattr;
5755                 int tid;
5756
5757                 tidsattr = nla_nest_start_noflag(msg,
5758                                                  NL80211_STA_INFO_TID_STATS);
5759                 if (!tidsattr)
5760                         goto nla_put_failure;
5761
5762                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5763                         struct cfg80211_tid_stats *tidstats;
5764                         struct nlattr *tidattr;
5765
5766                         tidstats = &sinfo->pertid[tid];
5767
5768                         if (!tidstats->filled)
5769                                 continue;
5770
5771                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5772                         if (!tidattr)
5773                                 goto nla_put_failure;
5774
5775 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5776         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5777             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5778                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5779                 goto nla_put_failure;                                   \
5780         } while (0)
5781
5782                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5783                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5784                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5785                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5786
5787 #undef PUT_TIDVAL_U64
5788                         if ((tidstats->filled &
5789                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5790                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5791                                                    NL80211_TID_STATS_TXQ_STATS))
5792                                 goto nla_put_failure;
5793
5794                         nla_nest_end(msg, tidattr);
5795                 }
5796
5797                 nla_nest_end(msg, tidsattr);
5798         }
5799
5800         nla_nest_end(msg, sinfoattr);
5801
5802         if (sinfo->assoc_req_ies_len &&
5803             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5804                     sinfo->assoc_req_ies))
5805                 goto nla_put_failure;
5806
5807         cfg80211_sinfo_release_content(sinfo);
5808         genlmsg_end(msg, hdr);
5809         return 0;
5810
5811  nla_put_failure:
5812         cfg80211_sinfo_release_content(sinfo);
5813         genlmsg_cancel(msg, hdr);
5814         return -EMSGSIZE;
5815 }
5816
5817 static int nl80211_dump_station(struct sk_buff *skb,
5818                                 struct netlink_callback *cb)
5819 {
5820         struct station_info sinfo;
5821         struct cfg80211_registered_device *rdev;
5822         struct wireless_dev *wdev;
5823         u8 mac_addr[ETH_ALEN];
5824         int sta_idx = cb->args[2];
5825         int err;
5826
5827         rtnl_lock();
5828         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5829         if (err)
5830                 goto out_err;
5831
5832         if (!wdev->netdev) {
5833                 err = -EINVAL;
5834                 goto out_err;
5835         }
5836
5837         if (!rdev->ops->dump_station) {
5838                 err = -EOPNOTSUPP;
5839                 goto out_err;
5840         }
5841
5842         while (1) {
5843                 memset(&sinfo, 0, sizeof(sinfo));
5844                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5845                                         mac_addr, &sinfo);
5846                 if (err == -ENOENT)
5847                         break;
5848                 if (err)
5849                         goto out_err;
5850
5851                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5852                                 NETLINK_CB(cb->skb).portid,
5853                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5854                                 rdev, wdev->netdev, mac_addr,
5855                                 &sinfo) < 0)
5856                         goto out;
5857
5858                 sta_idx++;
5859         }
5860
5861  out:
5862         cb->args[2] = sta_idx;
5863         err = skb->len;
5864  out_err:
5865         rtnl_unlock();
5866
5867         return err;
5868 }
5869
5870 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5871 {
5872         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5873         struct net_device *dev = info->user_ptr[1];
5874         struct station_info sinfo;
5875         struct sk_buff *msg;
5876         u8 *mac_addr = NULL;
5877         int err;
5878
5879         memset(&sinfo, 0, sizeof(sinfo));
5880
5881         if (!info->attrs[NL80211_ATTR_MAC])
5882                 return -EINVAL;
5883
5884         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5885
5886         if (!rdev->ops->get_station)
5887                 return -EOPNOTSUPP;
5888
5889         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5890         if (err)
5891                 return err;
5892
5893         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5894         if (!msg) {
5895                 cfg80211_sinfo_release_content(&sinfo);
5896                 return -ENOMEM;
5897         }
5898
5899         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5900                                  info->snd_portid, info->snd_seq, 0,
5901                                  rdev, dev, mac_addr, &sinfo) < 0) {
5902                 nlmsg_free(msg);
5903                 return -ENOBUFS;
5904         }
5905
5906         return genlmsg_reply(msg, info);
5907 }
5908
5909 int cfg80211_check_station_change(struct wiphy *wiphy,
5910                                   struct station_parameters *params,
5911                                   enum cfg80211_station_type statype)
5912 {
5913         if (params->listen_interval != -1 &&
5914             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5915                 return -EINVAL;
5916
5917         if (params->support_p2p_ps != -1 &&
5918             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5919                 return -EINVAL;
5920
5921         if (params->aid &&
5922             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5923             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5924                 return -EINVAL;
5925
5926         /* When you run into this, adjust the code below for the new flag */
5927         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5928
5929         switch (statype) {
5930         case CFG80211_STA_MESH_PEER_KERNEL:
5931         case CFG80211_STA_MESH_PEER_USER:
5932                 /*
5933                  * No ignoring the TDLS flag here -- the userspace mesh
5934                  * code doesn't have the bug of including TDLS in the
5935                  * mask everywhere.
5936                  */
5937                 if (params->sta_flags_mask &
5938                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5939                                   BIT(NL80211_STA_FLAG_MFP) |
5940                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5941                         return -EINVAL;
5942                 break;
5943         case CFG80211_STA_TDLS_PEER_SETUP:
5944         case CFG80211_STA_TDLS_PEER_ACTIVE:
5945                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5946                         return -EINVAL;
5947                 /* ignore since it can't change */
5948                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5949                 break;
5950         default:
5951                 /* disallow mesh-specific things */
5952                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5953                         return -EINVAL;
5954                 if (params->local_pm)
5955                         return -EINVAL;
5956                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5957                         return -EINVAL;
5958         }
5959
5960         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5961             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5962                 /* TDLS can't be set, ... */
5963                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5964                         return -EINVAL;
5965                 /*
5966                  * ... but don't bother the driver with it. This works around
5967                  * a hostapd/wpa_supplicant issue -- it always includes the
5968                  * TLDS_PEER flag in the mask even for AP mode.
5969                  */
5970                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5971         }
5972
5973         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5974             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5975                 /* reject other things that can't change */
5976                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5977                         return -EINVAL;
5978                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5979                         return -EINVAL;
5980                 if (params->supported_rates)
5981                         return -EINVAL;
5982                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5983                     params->he_capa)
5984                         return -EINVAL;
5985         }
5986
5987         if (statype != CFG80211_STA_AP_CLIENT &&
5988             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5989                 if (params->vlan)
5990                         return -EINVAL;
5991         }
5992
5993         switch (statype) {
5994         case CFG80211_STA_AP_MLME_CLIENT:
5995                 /* Use this only for authorizing/unauthorizing a station */
5996                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5997                         return -EOPNOTSUPP;
5998                 break;
5999         case CFG80211_STA_AP_CLIENT:
6000         case CFG80211_STA_AP_CLIENT_UNASSOC:
6001                 /* accept only the listed bits */
6002                 if (params->sta_flags_mask &
6003                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6004                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6005                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6006                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6007                                   BIT(NL80211_STA_FLAG_WME) |
6008                                   BIT(NL80211_STA_FLAG_MFP)))
6009                         return -EINVAL;
6010
6011                 /* but authenticated/associated only if driver handles it */
6012                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6013                     params->sta_flags_mask &
6014                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6015                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6016                         return -EINVAL;
6017                 break;
6018         case CFG80211_STA_IBSS:
6019         case CFG80211_STA_AP_STA:
6020                 /* reject any changes other than AUTHORIZED */
6021                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6022                         return -EINVAL;
6023                 break;
6024         case CFG80211_STA_TDLS_PEER_SETUP:
6025                 /* reject any changes other than AUTHORIZED or WME */
6026                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6027                                                BIT(NL80211_STA_FLAG_WME)))
6028                         return -EINVAL;
6029                 /* force (at least) rates when authorizing */
6030                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6031                     !params->supported_rates)
6032                         return -EINVAL;
6033                 break;
6034         case CFG80211_STA_TDLS_PEER_ACTIVE:
6035                 /* reject any changes */
6036                 return -EINVAL;
6037         case CFG80211_STA_MESH_PEER_KERNEL:
6038                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6039                         return -EINVAL;
6040                 break;
6041         case CFG80211_STA_MESH_PEER_USER:
6042                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6043                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6044                         return -EINVAL;
6045                 break;
6046         }
6047
6048         /*
6049          * Older kernel versions ignored this attribute entirely, so don't
6050          * reject attempts to update it but mark it as unused instead so the
6051          * driver won't look at the data.
6052          */
6053         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6054             statype != CFG80211_STA_TDLS_PEER_SETUP)
6055                 params->opmode_notif_used = false;
6056
6057         return 0;
6058 }
6059 EXPORT_SYMBOL(cfg80211_check_station_change);
6060
6061 /*
6062  * Get vlan interface making sure it is running and on the right wiphy.
6063  */
6064 static struct net_device *get_vlan(struct genl_info *info,
6065                                    struct cfg80211_registered_device *rdev)
6066 {
6067         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6068         struct net_device *v;
6069         int ret;
6070
6071         if (!vlanattr)
6072                 return NULL;
6073
6074         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6075         if (!v)
6076                 return ERR_PTR(-ENODEV);
6077
6078         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6079                 ret = -EINVAL;
6080                 goto error;
6081         }
6082
6083         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6084             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6085             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6086                 ret = -EINVAL;
6087                 goto error;
6088         }
6089
6090         if (!netif_running(v)) {
6091                 ret = -ENETDOWN;
6092                 goto error;
6093         }
6094
6095         return v;
6096  error:
6097         dev_put(v);
6098         return ERR_PTR(ret);
6099 }
6100
6101 static const struct nla_policy
6102 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6103         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6104         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6105 };
6106
6107 static int nl80211_parse_sta_wme(struct genl_info *info,
6108                                  struct station_parameters *params)
6109 {
6110         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6111         struct nlattr *nla;
6112         int err;
6113
6114         /* parse WME attributes if present */
6115         if (!info->attrs[NL80211_ATTR_STA_WME])
6116                 return 0;
6117
6118         nla = info->attrs[NL80211_ATTR_STA_WME];
6119         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6120                                           nl80211_sta_wme_policy,
6121                                           info->extack);
6122         if (err)
6123                 return err;
6124
6125         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6126                 params->uapsd_queues = nla_get_u8(
6127                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6128         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6129                 return -EINVAL;
6130
6131         if (tb[NL80211_STA_WME_MAX_SP])
6132                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6133
6134         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6135                 return -EINVAL;
6136
6137         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6138
6139         return 0;
6140 }
6141
6142 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6143                                       struct station_parameters *params)
6144 {
6145         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6146                 params->supported_channels =
6147                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6148                 params->supported_channels_len =
6149                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6150                 /*
6151                  * Need to include at least one (first channel, number of
6152                  * channels) tuple for each subband (checked in policy),
6153                  * and must have proper tuples for the rest of the data as well.
6154                  */
6155                 if (params->supported_channels_len % 2)
6156                         return -EINVAL;
6157         }
6158
6159         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6160                 params->supported_oper_classes =
6161                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6162                 params->supported_oper_classes_len =
6163                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6164         }
6165         return 0;
6166 }
6167
6168 static int nl80211_set_station_tdls(struct genl_info *info,
6169                                     struct station_parameters *params)
6170 {
6171         int err;
6172         /* Dummy STA entry gets updated once the peer capabilities are known */
6173         if (info->attrs[NL80211_ATTR_PEER_AID])
6174                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6175         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6176                 params->ht_capa =
6177                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6178         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6179                 params->vht_capa =
6180                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6181         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6182                 params->he_capa =
6183                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6184                 params->he_capa_len =
6185                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6186         }
6187
6188         err = nl80211_parse_sta_channel_info(info, params);
6189         if (err)
6190                 return err;
6191
6192         return nl80211_parse_sta_wme(info, params);
6193 }
6194
6195 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6196                                              struct station_parameters *params)
6197 {
6198         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6199         int idx;
6200
6201         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6202                 if (!rdev->ops->set_tx_power ||
6203                     !wiphy_ext_feature_isset(&rdev->wiphy,
6204                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6205                         return -EOPNOTSUPP;
6206
6207                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6208                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6209
6210                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6211                         idx = NL80211_ATTR_STA_TX_POWER;
6212
6213                         if (info->attrs[idx])
6214                                 params->txpwr.power =
6215                                         nla_get_s16(info->attrs[idx]);
6216                         else
6217                                 return -EINVAL;
6218                 }
6219                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6220         }
6221
6222         return 0;
6223 }
6224
6225 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6226 {
6227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6228         struct net_device *dev = info->user_ptr[1];
6229         struct station_parameters params;
6230         u8 *mac_addr;
6231         int err;
6232
6233         memset(&params, 0, sizeof(params));
6234
6235         if (!rdev->ops->change_station)
6236                 return -EOPNOTSUPP;
6237
6238         /*
6239          * AID and listen_interval properties can be set only for unassociated
6240          * station. Include these parameters here and will check them in
6241          * cfg80211_check_station_change().
6242          */
6243         if (info->attrs[NL80211_ATTR_STA_AID])
6244                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6245
6246         if (info->attrs[NL80211_ATTR_VLAN_ID])
6247                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6248
6249         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6250                 params.listen_interval =
6251                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6252         else
6253                 params.listen_interval = -1;
6254
6255         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6256                 params.support_p2p_ps =
6257                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6258         else
6259                 params.support_p2p_ps = -1;
6260
6261         if (!info->attrs[NL80211_ATTR_MAC])
6262                 return -EINVAL;
6263
6264         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6265
6266         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6267                 params.supported_rates =
6268                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6269                 params.supported_rates_len =
6270                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6271         }
6272
6273         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6274                 params.capability =
6275                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6276                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6277         }
6278
6279         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6280                 params.ext_capab =
6281                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6282                 params.ext_capab_len =
6283                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6284         }
6285
6286         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6287                 return -EINVAL;
6288
6289         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6290                 params.plink_action =
6291                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6292
6293         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6294                 params.plink_state =
6295                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6296                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6297                         params.peer_aid = nla_get_u16(
6298                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6299                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6300         }
6301
6302         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6303                 params.local_pm = nla_get_u32(
6304                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6305
6306         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6307                 params.opmode_notif_used = true;
6308                 params.opmode_notif =
6309                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6310         }
6311
6312         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6313                 params.he_6ghz_capa =
6314                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6315
6316         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6317                 params.airtime_weight =
6318                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6319
6320         if (params.airtime_weight &&
6321             !wiphy_ext_feature_isset(&rdev->wiphy,
6322                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6323                 return -EOPNOTSUPP;
6324
6325         err = nl80211_parse_sta_txpower_setting(info, &params);
6326         if (err)
6327                 return err;
6328
6329         /* Include parameters for TDLS peer (will check later) */
6330         err = nl80211_set_station_tdls(info, &params);
6331         if (err)
6332                 return err;
6333
6334         params.vlan = get_vlan(info, rdev);
6335         if (IS_ERR(params.vlan))
6336                 return PTR_ERR(params.vlan);
6337
6338         switch (dev->ieee80211_ptr->iftype) {
6339         case NL80211_IFTYPE_AP:
6340         case NL80211_IFTYPE_AP_VLAN:
6341         case NL80211_IFTYPE_P2P_GO:
6342         case NL80211_IFTYPE_P2P_CLIENT:
6343         case NL80211_IFTYPE_STATION:
6344         case NL80211_IFTYPE_ADHOC:
6345         case NL80211_IFTYPE_MESH_POINT:
6346                 break;
6347         default:
6348                 err = -EOPNOTSUPP;
6349                 goto out_put_vlan;
6350         }
6351
6352         /* driver will call cfg80211_check_station_change() */
6353         err = rdev_change_station(rdev, dev, mac_addr, &params);
6354
6355  out_put_vlan:
6356         if (params.vlan)
6357                 dev_put(params.vlan);
6358
6359         return err;
6360 }
6361
6362 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6363 {
6364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6365         int err;
6366         struct net_device *dev = info->user_ptr[1];
6367         struct station_parameters params;
6368         u8 *mac_addr = NULL;
6369         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6370                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6371
6372         memset(&params, 0, sizeof(params));
6373
6374         if (!rdev->ops->add_station)
6375                 return -EOPNOTSUPP;
6376
6377         if (!info->attrs[NL80211_ATTR_MAC])
6378                 return -EINVAL;
6379
6380         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6381                 return -EINVAL;
6382
6383         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6384                 return -EINVAL;
6385
6386         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6387             !info->attrs[NL80211_ATTR_PEER_AID])
6388                 return -EINVAL;
6389
6390         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6391         params.supported_rates =
6392                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6393         params.supported_rates_len =
6394                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6395         params.listen_interval =
6396                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6397
6398         if (info->attrs[NL80211_ATTR_VLAN_ID])
6399                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6400
6401         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6402                 params.support_p2p_ps =
6403                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6404         } else {
6405                 /*
6406                  * if not specified, assume it's supported for P2P GO interface,
6407                  * and is NOT supported for AP interface
6408                  */
6409                 params.support_p2p_ps =
6410                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6411         }
6412
6413         if (info->attrs[NL80211_ATTR_PEER_AID])
6414                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6415         else
6416                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6417
6418         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6419                 params.capability =
6420                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6421                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6422         }
6423
6424         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6425                 params.ext_capab =
6426                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6427                 params.ext_capab_len =
6428                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6429         }
6430
6431         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6432                 params.ht_capa =
6433                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6434
6435         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6436                 params.vht_capa =
6437                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6438
6439         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6440                 params.he_capa =
6441                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6442                 params.he_capa_len =
6443                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6444         }
6445
6446         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6447                 params.he_6ghz_capa =
6448                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6449
6450         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6451                 params.opmode_notif_used = true;
6452                 params.opmode_notif =
6453                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6454         }
6455
6456         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6457                 params.plink_action =
6458                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6459
6460         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6461                 params.airtime_weight =
6462                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6463
6464         if (params.airtime_weight &&
6465             !wiphy_ext_feature_isset(&rdev->wiphy,
6466                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6467                 return -EOPNOTSUPP;
6468
6469         err = nl80211_parse_sta_txpower_setting(info, &params);
6470         if (err)
6471                 return err;
6472
6473         err = nl80211_parse_sta_channel_info(info, &params);
6474         if (err)
6475                 return err;
6476
6477         err = nl80211_parse_sta_wme(info, &params);
6478         if (err)
6479                 return err;
6480
6481         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6482                 return -EINVAL;
6483
6484         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6485          * as userspace might just pass through the capabilities from the IEs
6486          * directly, rather than enforcing this restriction and returning an
6487          * error in this case.
6488          */
6489         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6490                 params.ht_capa = NULL;
6491                 params.vht_capa = NULL;
6492
6493                 /* HE requires WME */
6494                 if (params.he_capa_len || params.he_6ghz_capa)
6495                         return -EINVAL;
6496         }
6497
6498         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6499         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6500                 return -EINVAL;
6501
6502         /* When you run into this, adjust the code below for the new flag */
6503         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6504
6505         switch (dev->ieee80211_ptr->iftype) {
6506         case NL80211_IFTYPE_AP:
6507         case NL80211_IFTYPE_AP_VLAN:
6508         case NL80211_IFTYPE_P2P_GO:
6509                 /* ignore WME attributes if iface/sta is not capable */
6510                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6511                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6512                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6513
6514                 /* TDLS peers cannot be added */
6515                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6516                     info->attrs[NL80211_ATTR_PEER_AID])
6517                         return -EINVAL;
6518                 /* but don't bother the driver with it */
6519                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6520
6521                 /* allow authenticated/associated only if driver handles it */
6522                 if (!(rdev->wiphy.features &
6523                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6524                     params.sta_flags_mask & auth_assoc)
6525                         return -EINVAL;
6526
6527                 /* Older userspace, or userspace wanting to be compatible with
6528                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6529                  * and assoc flags in the mask, but assumes the station will be
6530                  * added as associated anyway since this was the required driver
6531                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6532                  * introduced.
6533                  * In order to not bother drivers with this quirk in the API
6534                  * set the flags in both the mask and set for new stations in
6535                  * this case.
6536                  */
6537                 if (!(params.sta_flags_mask & auth_assoc)) {
6538                         params.sta_flags_mask |= auth_assoc;
6539                         params.sta_flags_set |= auth_assoc;
6540                 }
6541
6542                 /* must be last in here for error handling */
6543                 params.vlan = get_vlan(info, rdev);
6544                 if (IS_ERR(params.vlan))
6545                         return PTR_ERR(params.vlan);
6546                 break;
6547         case NL80211_IFTYPE_MESH_POINT:
6548                 /* ignore uAPSD data */
6549                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6550
6551                 /* associated is disallowed */
6552                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6553                         return -EINVAL;
6554                 /* TDLS peers cannot be added */
6555                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6556                     info->attrs[NL80211_ATTR_PEER_AID])
6557                         return -EINVAL;
6558                 break;
6559         case NL80211_IFTYPE_STATION:
6560         case NL80211_IFTYPE_P2P_CLIENT:
6561                 /* ignore uAPSD data */
6562                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6563
6564                 /* these are disallowed */
6565                 if (params.sta_flags_mask &
6566                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6567                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6568                         return -EINVAL;
6569                 /* Only TDLS peers can be added */
6570                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6571                         return -EINVAL;
6572                 /* Can only add if TDLS ... */
6573                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6574                         return -EOPNOTSUPP;
6575                 /* ... with external setup is supported */
6576                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6577                         return -EOPNOTSUPP;
6578                 /*
6579                  * Older wpa_supplicant versions always mark the TDLS peer
6580                  * as authorized, but it shouldn't yet be.
6581                  */
6582                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6583                 break;
6584         default:
6585                 return -EOPNOTSUPP;
6586         }
6587
6588         /* be aware of params.vlan when changing code here */
6589
6590         err = rdev_add_station(rdev, dev, mac_addr, &params);
6591
6592         if (params.vlan)
6593                 dev_put(params.vlan);
6594         return err;
6595 }
6596
6597 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6598 {
6599         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6600         struct net_device *dev = info->user_ptr[1];
6601         struct station_del_parameters params;
6602
6603         memset(&params, 0, sizeof(params));
6604
6605         if (info->attrs[NL80211_ATTR_MAC])
6606                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6607
6608         switch (dev->ieee80211_ptr->iftype) {
6609         case NL80211_IFTYPE_AP:
6610         case NL80211_IFTYPE_AP_VLAN:
6611         case NL80211_IFTYPE_MESH_POINT:
6612         case NL80211_IFTYPE_P2P_GO:
6613                 /* always accept these */
6614                 break;
6615         case NL80211_IFTYPE_ADHOC:
6616                 /* conditionally accept */
6617                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6618                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6619                         break;
6620                 return -EINVAL;
6621         default:
6622                 return -EINVAL;
6623         }
6624
6625         if (!rdev->ops->del_station)
6626                 return -EOPNOTSUPP;
6627
6628         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6629                 params.subtype =
6630                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6631                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6632                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6633                         return -EINVAL;
6634         } else {
6635                 /* Default to Deauthentication frame */
6636                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6637         }
6638
6639         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6640                 params.reason_code =
6641                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6642                 if (params.reason_code == 0)
6643                         return -EINVAL; /* 0 is reserved */
6644         } else {
6645                 /* Default to reason code 2 */
6646                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6647         }
6648
6649         return rdev_del_station(rdev, dev, &params);
6650 }
6651
6652 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6653                                 int flags, struct net_device *dev,
6654                                 u8 *dst, u8 *next_hop,
6655                                 struct mpath_info *pinfo)
6656 {
6657         void *hdr;
6658         struct nlattr *pinfoattr;
6659
6660         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6661         if (!hdr)
6662                 return -1;
6663
6664         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6665             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6666             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6667             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6668                 goto nla_put_failure;
6669
6670         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6671         if (!pinfoattr)
6672                 goto nla_put_failure;
6673         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6674             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6675                         pinfo->frame_qlen))
6676                 goto nla_put_failure;
6677         if (((pinfo->filled & MPATH_INFO_SN) &&
6678              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6679             ((pinfo->filled & MPATH_INFO_METRIC) &&
6680              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6681                          pinfo->metric)) ||
6682             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6683              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6684                          pinfo->exptime)) ||
6685             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6686              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6687                         pinfo->flags)) ||
6688             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6689              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6690                          pinfo->discovery_timeout)) ||
6691             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6692              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6693                         pinfo->discovery_retries)) ||
6694             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6695              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6696                         pinfo->hop_count)) ||
6697             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6698              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6699                          pinfo->path_change_count)))
6700                 goto nla_put_failure;
6701
6702         nla_nest_end(msg, pinfoattr);
6703
6704         genlmsg_end(msg, hdr);
6705         return 0;
6706
6707  nla_put_failure:
6708         genlmsg_cancel(msg, hdr);
6709         return -EMSGSIZE;
6710 }
6711
6712 static int nl80211_dump_mpath(struct sk_buff *skb,
6713                               struct netlink_callback *cb)
6714 {
6715         struct mpath_info pinfo;
6716         struct cfg80211_registered_device *rdev;
6717         struct wireless_dev *wdev;
6718         u8 dst[ETH_ALEN];
6719         u8 next_hop[ETH_ALEN];
6720         int path_idx = cb->args[2];
6721         int err;
6722
6723         rtnl_lock();
6724         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6725         if (err)
6726                 goto out_err;
6727
6728         if (!rdev->ops->dump_mpath) {
6729                 err = -EOPNOTSUPP;
6730                 goto out_err;
6731         }
6732
6733         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6734                 err = -EOPNOTSUPP;
6735                 goto out_err;
6736         }
6737
6738         while (1) {
6739                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6740                                       next_hop, &pinfo);
6741                 if (err == -ENOENT)
6742                         break;
6743                 if (err)
6744                         goto out_err;
6745
6746                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6747                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6748                                        wdev->netdev, dst, next_hop,
6749                                        &pinfo) < 0)
6750                         goto out;
6751
6752                 path_idx++;
6753         }
6754
6755  out:
6756         cb->args[2] = path_idx;
6757         err = skb->len;
6758  out_err:
6759         rtnl_unlock();
6760         return err;
6761 }
6762
6763 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6764 {
6765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6766         int err;
6767         struct net_device *dev = info->user_ptr[1];
6768         struct mpath_info pinfo;
6769         struct sk_buff *msg;
6770         u8 *dst = NULL;
6771         u8 next_hop[ETH_ALEN];
6772
6773         memset(&pinfo, 0, sizeof(pinfo));
6774
6775         if (!info->attrs[NL80211_ATTR_MAC])
6776                 return -EINVAL;
6777
6778         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6779
6780         if (!rdev->ops->get_mpath)
6781                 return -EOPNOTSUPP;
6782
6783         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6784                 return -EOPNOTSUPP;
6785
6786         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6787         if (err)
6788                 return err;
6789
6790         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6791         if (!msg)
6792                 return -ENOMEM;
6793
6794         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6795                                  dev, dst, next_hop, &pinfo) < 0) {
6796                 nlmsg_free(msg);
6797                 return -ENOBUFS;
6798         }
6799
6800         return genlmsg_reply(msg, info);
6801 }
6802
6803 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6804 {
6805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6806         struct net_device *dev = info->user_ptr[1];
6807         u8 *dst = NULL;
6808         u8 *next_hop = NULL;
6809
6810         if (!info->attrs[NL80211_ATTR_MAC])
6811                 return -EINVAL;
6812
6813         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6814                 return -EINVAL;
6815
6816         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6817         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6818
6819         if (!rdev->ops->change_mpath)
6820                 return -EOPNOTSUPP;
6821
6822         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6823                 return -EOPNOTSUPP;
6824
6825         return rdev_change_mpath(rdev, dev, dst, next_hop);
6826 }
6827
6828 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6829 {
6830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6831         struct net_device *dev = info->user_ptr[1];
6832         u8 *dst = NULL;
6833         u8 *next_hop = NULL;
6834
6835         if (!info->attrs[NL80211_ATTR_MAC])
6836                 return -EINVAL;
6837
6838         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6839                 return -EINVAL;
6840
6841         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6843
6844         if (!rdev->ops->add_mpath)
6845                 return -EOPNOTSUPP;
6846
6847         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6848                 return -EOPNOTSUPP;
6849
6850         return rdev_add_mpath(rdev, dev, dst, next_hop);
6851 }
6852
6853 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6854 {
6855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6856         struct net_device *dev = info->user_ptr[1];
6857         u8 *dst = NULL;
6858
6859         if (info->attrs[NL80211_ATTR_MAC])
6860                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6861
6862         if (!rdev->ops->del_mpath)
6863                 return -EOPNOTSUPP;
6864
6865         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6866                 return -EOPNOTSUPP;
6867
6868         return rdev_del_mpath(rdev, dev, dst);
6869 }
6870
6871 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6872 {
6873         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6874         int err;
6875         struct net_device *dev = info->user_ptr[1];
6876         struct mpath_info pinfo;
6877         struct sk_buff *msg;
6878         u8 *dst = NULL;
6879         u8 mpp[ETH_ALEN];
6880
6881         memset(&pinfo, 0, sizeof(pinfo));
6882
6883         if (!info->attrs[NL80211_ATTR_MAC])
6884                 return -EINVAL;
6885
6886         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6887
6888         if (!rdev->ops->get_mpp)
6889                 return -EOPNOTSUPP;
6890
6891         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6892                 return -EOPNOTSUPP;
6893
6894         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6895         if (err)
6896                 return err;
6897
6898         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6899         if (!msg)
6900                 return -ENOMEM;
6901
6902         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6903                                dev, dst, mpp, &pinfo) < 0) {
6904                 nlmsg_free(msg);
6905                 return -ENOBUFS;
6906         }
6907
6908         return genlmsg_reply(msg, info);
6909 }
6910
6911 static int nl80211_dump_mpp(struct sk_buff *skb,
6912                             struct netlink_callback *cb)
6913 {
6914         struct mpath_info pinfo;
6915         struct cfg80211_registered_device *rdev;
6916         struct wireless_dev *wdev;
6917         u8 dst[ETH_ALEN];
6918         u8 mpp[ETH_ALEN];
6919         int path_idx = cb->args[2];
6920         int err;
6921
6922         rtnl_lock();
6923         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6924         if (err)
6925                 goto out_err;
6926
6927         if (!rdev->ops->dump_mpp) {
6928                 err = -EOPNOTSUPP;
6929                 goto out_err;
6930         }
6931
6932         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6933                 err = -EOPNOTSUPP;
6934                 goto out_err;
6935         }
6936
6937         while (1) {
6938                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6939                                     mpp, &pinfo);
6940                 if (err == -ENOENT)
6941                         break;
6942                 if (err)
6943                         goto out_err;
6944
6945                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6946                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6947                                        wdev->netdev, dst, mpp,
6948                                        &pinfo) < 0)
6949                         goto out;
6950
6951                 path_idx++;
6952         }
6953
6954  out:
6955         cb->args[2] = path_idx;
6956         err = skb->len;
6957  out_err:
6958         rtnl_unlock();
6959         return err;
6960 }
6961
6962 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6963 {
6964         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6965         struct net_device *dev = info->user_ptr[1];
6966         struct wireless_dev *wdev = dev->ieee80211_ptr;
6967         struct bss_parameters params;
6968         int err;
6969
6970         memset(&params, 0, sizeof(params));
6971         /* default to not changing parameters */
6972         params.use_cts_prot = -1;
6973         params.use_short_preamble = -1;
6974         params.use_short_slot_time = -1;
6975         params.ap_isolate = -1;
6976         params.ht_opmode = -1;
6977         params.p2p_ctwindow = -1;
6978         params.p2p_opp_ps = -1;
6979
6980         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6981                 params.use_cts_prot =
6982                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6983         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6984                 params.use_short_preamble =
6985                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6986         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6987                 params.use_short_slot_time =
6988                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6989         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6990                 params.basic_rates =
6991                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6992                 params.basic_rates_len =
6993                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6994         }
6995         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6996                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6997         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6998                 params.ht_opmode =
6999                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7000
7001         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7002                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7003                         return -EINVAL;
7004                 params.p2p_ctwindow =
7005                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7006                 if (params.p2p_ctwindow != 0 &&
7007                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7008                         return -EINVAL;
7009         }
7010
7011         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7012                 u8 tmp;
7013
7014                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7015                         return -EINVAL;
7016                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7017                 params.p2p_opp_ps = tmp;
7018                 if (params.p2p_opp_ps &&
7019                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7020                         return -EINVAL;
7021         }
7022
7023         if (!rdev->ops->change_bss)
7024                 return -EOPNOTSUPP;
7025
7026         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7027             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7028                 return -EOPNOTSUPP;
7029
7030         wdev_lock(wdev);
7031         err = rdev_change_bss(rdev, dev, &params);
7032         wdev_unlock(wdev);
7033
7034         return err;
7035 }
7036
7037 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7038 {
7039         char *data = NULL;
7040         bool is_indoor;
7041         enum nl80211_user_reg_hint_type user_reg_hint_type;
7042         u32 owner_nlportid;
7043
7044         /*
7045          * You should only get this when cfg80211 hasn't yet initialized
7046          * completely when built-in to the kernel right between the time
7047          * window between nl80211_init() and regulatory_init(), if that is
7048          * even possible.
7049          */
7050         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7051                 return -EINPROGRESS;
7052
7053         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7054                 user_reg_hint_type =
7055                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7056         else
7057                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7058
7059         switch (user_reg_hint_type) {
7060         case NL80211_USER_REG_HINT_USER:
7061         case NL80211_USER_REG_HINT_CELL_BASE:
7062                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7063                         return -EINVAL;
7064
7065                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7066                 return regulatory_hint_user(data, user_reg_hint_type);
7067         case NL80211_USER_REG_HINT_INDOOR:
7068                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7069                         owner_nlportid = info->snd_portid;
7070                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7071                 } else {
7072                         owner_nlportid = 0;
7073                         is_indoor = true;
7074                 }
7075
7076                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7077         default:
7078                 return -EINVAL;
7079         }
7080 }
7081
7082 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7083 {
7084         return reg_reload_regdb();
7085 }
7086
7087 static int nl80211_get_mesh_config(struct sk_buff *skb,
7088                                    struct genl_info *info)
7089 {
7090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7091         struct net_device *dev = info->user_ptr[1];
7092         struct wireless_dev *wdev = dev->ieee80211_ptr;
7093         struct mesh_config cur_params;
7094         int err = 0;
7095         void *hdr;
7096         struct nlattr *pinfoattr;
7097         struct sk_buff *msg;
7098
7099         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7100                 return -EOPNOTSUPP;
7101
7102         if (!rdev->ops->get_mesh_config)
7103                 return -EOPNOTSUPP;
7104
7105         wdev_lock(wdev);
7106         /* If not connected, get default parameters */
7107         if (!wdev->mesh_id_len)
7108                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7109         else
7110                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7111         wdev_unlock(wdev);
7112
7113         if (err)
7114                 return err;
7115
7116         /* Draw up a netlink message to send back */
7117         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7118         if (!msg)
7119                 return -ENOMEM;
7120         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7121                              NL80211_CMD_GET_MESH_CONFIG);
7122         if (!hdr)
7123                 goto out;
7124         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7125         if (!pinfoattr)
7126                 goto nla_put_failure;
7127         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7128             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7129                         cur_params.dot11MeshRetryTimeout) ||
7130             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7131                         cur_params.dot11MeshConfirmTimeout) ||
7132             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7133                         cur_params.dot11MeshHoldingTimeout) ||
7134             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7135                         cur_params.dot11MeshMaxPeerLinks) ||
7136             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7137                        cur_params.dot11MeshMaxRetries) ||
7138             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7139                        cur_params.dot11MeshTTL) ||
7140             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7141                        cur_params.element_ttl) ||
7142             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7143                        cur_params.auto_open_plinks) ||
7144             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7145                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7146             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7147                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7148             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7149                         cur_params.path_refresh_time) ||
7150             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7151                         cur_params.min_discovery_timeout) ||
7152             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7153                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7154             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7155                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7156             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7157                         cur_params.dot11MeshHWMPperrMinInterval) ||
7158             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7159                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7160             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7161                        cur_params.dot11MeshHWMPRootMode) ||
7162             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7163                         cur_params.dot11MeshHWMPRannInterval) ||
7164             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7165                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7166             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7167                        cur_params.dot11MeshForwarding) ||
7168             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7169                         cur_params.rssi_threshold) ||
7170             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7171                         cur_params.ht_opmode) ||
7172             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7173                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7174             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7175                         cur_params.dot11MeshHWMProotInterval) ||
7176             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7177                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7178             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7179                         cur_params.power_mode) ||
7180             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7181                         cur_params.dot11MeshAwakeWindowDuration) ||
7182             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7183                         cur_params.plink_timeout) ||
7184             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7185                        cur_params.dot11MeshConnectedToMeshGate) ||
7186             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7187                        cur_params.dot11MeshNolearn) ||
7188             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7189                        cur_params.dot11MeshConnectedToAuthServer))
7190                 goto nla_put_failure;
7191         nla_nest_end(msg, pinfoattr);
7192         genlmsg_end(msg, hdr);
7193         return genlmsg_reply(msg, info);
7194
7195  nla_put_failure:
7196  out:
7197         nlmsg_free(msg);
7198         return -ENOBUFS;
7199 }
7200
7201 static const struct nla_policy
7202 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7203         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7204                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7205         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7206                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7207         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7208                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7209         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7210                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7211         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7212         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7213         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7214         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7215         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7216                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7217         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7218         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7219         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7220         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7221         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7222                 NLA_POLICY_MIN(NLA_U16, 1),
7223         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7224                 NLA_POLICY_MIN(NLA_U16, 1),
7225         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7226                 NLA_POLICY_MIN(NLA_U16, 1),
7227         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7228         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7229                 NLA_POLICY_MIN(NLA_U16, 1),
7230         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7231         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7232         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7233                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7234         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7235         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7236         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7237                 NLA_POLICY_MIN(NLA_U16, 1),
7238         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7239                 NLA_POLICY_MIN(NLA_U16, 1),
7240         [NL80211_MESHCONF_POWER_MODE] =
7241                 NLA_POLICY_RANGE(NLA_U32,
7242                                  NL80211_MESH_POWER_ACTIVE,
7243                                  NL80211_MESH_POWER_MAX),
7244         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7245         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7246         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7247         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7248         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7249 };
7250
7251 static const struct nla_policy
7252         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7253         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7254         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7255         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7256         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7257         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7258         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7259         [NL80211_MESH_SETUP_IE] =
7260                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7261                                        IEEE80211_MAX_DATA_LEN),
7262         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7263 };
7264
7265 static int nl80211_parse_mesh_config(struct genl_info *info,
7266                                      struct mesh_config *cfg,
7267                                      u32 *mask_out)
7268 {
7269         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7270         u32 mask = 0;
7271         u16 ht_opmode;
7272
7273 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7274 do {                                                                    \
7275         if (tb[attr]) {                                                 \
7276                 cfg->param = fn(tb[attr]);                              \
7277                 mask |= BIT((attr) - 1);                                \
7278         }                                                               \
7279 } while (0)
7280
7281         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7282                 return -EINVAL;
7283         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7284                 return -EINVAL;
7285
7286         /* This makes sure that there aren't more than 32 mesh config
7287          * parameters (otherwise our bitfield scheme would not work.) */
7288         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7289
7290         /* Fill in the params struct */
7291         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7292                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7293         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7294                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7295                                   nla_get_u16);
7296         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7297                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7298                                   nla_get_u16);
7299         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7300                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7301                                   nla_get_u16);
7302         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7303                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7304         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7305                                   NL80211_MESHCONF_TTL, nla_get_u8);
7306         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7307                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7308         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7309                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7310                                   nla_get_u8);
7311         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7312                                   mask,
7313                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7314                                   nla_get_u32);
7315         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7316                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7317                                   nla_get_u8);
7318         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7319                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7320                                   nla_get_u32);
7321         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7322             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7323                 return -EINVAL;
7324         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7325                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7326                                   nla_get_u16);
7327         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7328                                   mask,
7329                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7330                                   nla_get_u32);
7331         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7332             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7333              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7334                 return -EINVAL;
7335         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7336                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7337                                   nla_get_u16);
7338         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7339                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7340                                   nla_get_u16);
7341         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7342                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7343                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7344                                   nla_get_u16);
7345         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7346                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7347         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7348                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7349                                   nla_get_u16);
7350         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7351                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7352                                   nla_get_u8);
7353         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7354                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7355         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7356                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7357                                   nla_get_s32);
7358         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7359                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7360                                   nla_get_u8);
7361         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7362                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7363                                   nla_get_u8);
7364         /*
7365          * Check HT operation mode based on
7366          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7367          */
7368         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7369                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7370
7371                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7372                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7373                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7374                         return -EINVAL;
7375
7376                 /* NON_HT_STA bit is reserved, but some programs set it */
7377                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7378
7379                 cfg->ht_opmode = ht_opmode;
7380                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7381         }
7382         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7383                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7384                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7385                                   nla_get_u32);
7386         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7387             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7388              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7389                 return -EINVAL;
7390         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7391                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7392                                   nla_get_u16);
7393         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7394                                   mask,
7395                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7396                                   nla_get_u16);
7397         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7398                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7399         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7400                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7401         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7402                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7403         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7404                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7405         if (mask_out)
7406                 *mask_out = mask;
7407
7408         return 0;
7409
7410 #undef FILL_IN_MESH_PARAM_IF_SET
7411 }
7412
7413 static int nl80211_parse_mesh_setup(struct genl_info *info,
7414                                      struct mesh_setup *setup)
7415 {
7416         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7417         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7418
7419         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7420                 return -EINVAL;
7421         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7422                 return -EINVAL;
7423
7424         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7425                 setup->sync_method =
7426                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7427                  IEEE80211_SYNC_METHOD_VENDOR :
7428                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7429
7430         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7431                 setup->path_sel_proto =
7432                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7433                  IEEE80211_PATH_PROTOCOL_VENDOR :
7434                  IEEE80211_PATH_PROTOCOL_HWMP;
7435
7436         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7437                 setup->path_metric =
7438                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7439                  IEEE80211_PATH_METRIC_VENDOR :
7440                  IEEE80211_PATH_METRIC_AIRTIME;
7441
7442         if (tb[NL80211_MESH_SETUP_IE]) {
7443                 struct nlattr *ieattr =
7444                         tb[NL80211_MESH_SETUP_IE];
7445                 setup->ie = nla_data(ieattr);
7446                 setup->ie_len = nla_len(ieattr);
7447         }
7448         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7449             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7450                 return -EINVAL;
7451         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7452         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7453         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7454         if (setup->is_secure)
7455                 setup->user_mpm = true;
7456
7457         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7458                 if (!setup->user_mpm)
7459                         return -EINVAL;
7460                 setup->auth_id =
7461                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7462         }
7463
7464         return 0;
7465 }
7466
7467 static int nl80211_update_mesh_config(struct sk_buff *skb,
7468                                       struct genl_info *info)
7469 {
7470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7471         struct net_device *dev = info->user_ptr[1];
7472         struct wireless_dev *wdev = dev->ieee80211_ptr;
7473         struct mesh_config cfg = {};
7474         u32 mask;
7475         int err;
7476
7477         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7478                 return -EOPNOTSUPP;
7479
7480         if (!rdev->ops->update_mesh_config)
7481                 return -EOPNOTSUPP;
7482
7483         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7484         if (err)
7485                 return err;
7486
7487         wdev_lock(wdev);
7488         if (!wdev->mesh_id_len)
7489                 err = -ENOLINK;
7490
7491         if (!err)
7492                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7493
7494         wdev_unlock(wdev);
7495
7496         return err;
7497 }
7498
7499 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7500                               struct sk_buff *msg)
7501 {
7502         struct nlattr *nl_reg_rules;
7503         unsigned int i;
7504
7505         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7506             (regdom->dfs_region &&
7507              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7508                 goto nla_put_failure;
7509
7510         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7511         if (!nl_reg_rules)
7512                 goto nla_put_failure;
7513
7514         for (i = 0; i < regdom->n_reg_rules; i++) {
7515                 struct nlattr *nl_reg_rule;
7516                 const struct ieee80211_reg_rule *reg_rule;
7517                 const struct ieee80211_freq_range *freq_range;
7518                 const struct ieee80211_power_rule *power_rule;
7519                 unsigned int max_bandwidth_khz;
7520
7521                 reg_rule = &regdom->reg_rules[i];
7522                 freq_range = &reg_rule->freq_range;
7523                 power_rule = &reg_rule->power_rule;
7524
7525                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7526                 if (!nl_reg_rule)
7527                         goto nla_put_failure;
7528
7529                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7530                 if (!max_bandwidth_khz)
7531                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7532                                                                   reg_rule);
7533
7534                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7535                                 reg_rule->flags) ||
7536                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7537                                 freq_range->start_freq_khz) ||
7538                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7539                                 freq_range->end_freq_khz) ||
7540                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7541                                 max_bandwidth_khz) ||
7542                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7543                                 power_rule->max_antenna_gain) ||
7544                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7545                                 power_rule->max_eirp) ||
7546                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7547                                 reg_rule->dfs_cac_ms))
7548                         goto nla_put_failure;
7549
7550                 nla_nest_end(msg, nl_reg_rule);
7551         }
7552
7553         nla_nest_end(msg, nl_reg_rules);
7554         return 0;
7555
7556 nla_put_failure:
7557         return -EMSGSIZE;
7558 }
7559
7560 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7561 {
7562         const struct ieee80211_regdomain *regdom = NULL;
7563         struct cfg80211_registered_device *rdev;
7564         struct wiphy *wiphy = NULL;
7565         struct sk_buff *msg;
7566         void *hdr;
7567
7568         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7569         if (!msg)
7570                 return -ENOBUFS;
7571
7572         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7573                              NL80211_CMD_GET_REG);
7574         if (!hdr)
7575                 goto put_failure;
7576
7577         if (info->attrs[NL80211_ATTR_WIPHY]) {
7578                 bool self_managed;
7579
7580                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7581                 if (IS_ERR(rdev)) {
7582                         nlmsg_free(msg);
7583                         return PTR_ERR(rdev);
7584                 }
7585
7586                 wiphy = &rdev->wiphy;
7587                 self_managed = wiphy->regulatory_flags &
7588                                REGULATORY_WIPHY_SELF_MANAGED;
7589                 regdom = get_wiphy_regdom(wiphy);
7590
7591                 /* a self-managed-reg device must have a private regdom */
7592                 if (WARN_ON(!regdom && self_managed)) {
7593                         nlmsg_free(msg);
7594                         return -EINVAL;
7595                 }
7596
7597                 if (regdom &&
7598                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7599                         goto nla_put_failure;
7600         }
7601
7602         if (!wiphy && reg_last_request_cell_base() &&
7603             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7604                         NL80211_USER_REG_HINT_CELL_BASE))
7605                 goto nla_put_failure;
7606
7607         rcu_read_lock();
7608
7609         if (!regdom)
7610                 regdom = rcu_dereference(cfg80211_regdomain);
7611
7612         if (nl80211_put_regdom(regdom, msg))
7613                 goto nla_put_failure_rcu;
7614
7615         rcu_read_unlock();
7616
7617         genlmsg_end(msg, hdr);
7618         return genlmsg_reply(msg, info);
7619
7620 nla_put_failure_rcu:
7621         rcu_read_unlock();
7622 nla_put_failure:
7623 put_failure:
7624         nlmsg_free(msg);
7625         return -EMSGSIZE;
7626 }
7627
7628 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7629                                u32 seq, int flags, struct wiphy *wiphy,
7630                                const struct ieee80211_regdomain *regdom)
7631 {
7632         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7633                                    NL80211_CMD_GET_REG);
7634
7635         if (!hdr)
7636                 return -1;
7637
7638         genl_dump_check_consistent(cb, hdr);
7639
7640         if (nl80211_put_regdom(regdom, msg))
7641                 goto nla_put_failure;
7642
7643         if (!wiphy && reg_last_request_cell_base() &&
7644             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7645                         NL80211_USER_REG_HINT_CELL_BASE))
7646                 goto nla_put_failure;
7647
7648         if (wiphy &&
7649             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7650                 goto nla_put_failure;
7651
7652         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7653             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7654                 goto nla_put_failure;
7655
7656         genlmsg_end(msg, hdr);
7657         return 0;
7658
7659 nla_put_failure:
7660         genlmsg_cancel(msg, hdr);
7661         return -EMSGSIZE;
7662 }
7663
7664 static int nl80211_get_reg_dump(struct sk_buff *skb,
7665                                 struct netlink_callback *cb)
7666 {
7667         const struct ieee80211_regdomain *regdom = NULL;
7668         struct cfg80211_registered_device *rdev;
7669         int err, reg_idx, start = cb->args[2];
7670
7671         rtnl_lock();
7672
7673         if (cfg80211_regdomain && start == 0) {
7674                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7675                                           NLM_F_MULTI, NULL,
7676                                           rtnl_dereference(cfg80211_regdomain));
7677                 if (err < 0)
7678                         goto out_err;
7679         }
7680
7681         /* the global regdom is idx 0 */
7682         reg_idx = 1;
7683         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7684                 regdom = get_wiphy_regdom(&rdev->wiphy);
7685                 if (!regdom)
7686                         continue;
7687
7688                 if (++reg_idx <= start)
7689                         continue;
7690
7691                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7692                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7693                 if (err < 0) {
7694                         reg_idx--;
7695                         break;
7696                 }
7697         }
7698
7699         cb->args[2] = reg_idx;
7700         err = skb->len;
7701 out_err:
7702         rtnl_unlock();
7703         return err;
7704 }
7705
7706 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7707 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7708         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7709         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7710         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7711         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7712         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7713         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7714         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7715 };
7716
7717 static int parse_reg_rule(struct nlattr *tb[],
7718         struct ieee80211_reg_rule *reg_rule)
7719 {
7720         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7721         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7722
7723         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7724                 return -EINVAL;
7725         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7726                 return -EINVAL;
7727         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7728                 return -EINVAL;
7729         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7730                 return -EINVAL;
7731         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7732                 return -EINVAL;
7733
7734         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7735
7736         freq_range->start_freq_khz =
7737                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7738         freq_range->end_freq_khz =
7739                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7740         freq_range->max_bandwidth_khz =
7741                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7742
7743         power_rule->max_eirp =
7744                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7745
7746         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7747                 power_rule->max_antenna_gain =
7748                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7749
7750         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7751                 reg_rule->dfs_cac_ms =
7752                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7753
7754         return 0;
7755 }
7756
7757 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7758 {
7759         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7760         struct nlattr *nl_reg_rule;
7761         char *alpha2;
7762         int rem_reg_rules, r;
7763         u32 num_rules = 0, rule_idx = 0;
7764         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7765         struct ieee80211_regdomain *rd;
7766
7767         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7768                 return -EINVAL;
7769
7770         if (!info->attrs[NL80211_ATTR_REG_RULES])
7771                 return -EINVAL;
7772
7773         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7774
7775         if (info->attrs[NL80211_ATTR_DFS_REGION])
7776                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7777
7778         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7779                             rem_reg_rules) {
7780                 num_rules++;
7781                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7782                         return -EINVAL;
7783         }
7784
7785         if (!reg_is_valid_request(alpha2))
7786                 return -EINVAL;
7787
7788         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7789         if (!rd)
7790                 return -ENOMEM;
7791
7792         rd->n_reg_rules = num_rules;
7793         rd->alpha2[0] = alpha2[0];
7794         rd->alpha2[1] = alpha2[1];
7795
7796         /*
7797          * Disable DFS master mode if the DFS region was
7798          * not supported or known on this kernel.
7799          */
7800         if (reg_supported_dfs_region(dfs_region))
7801                 rd->dfs_region = dfs_region;
7802
7803         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7804                             rem_reg_rules) {
7805                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7806                                                 nl_reg_rule, reg_rule_policy,
7807                                                 info->extack);
7808                 if (r)
7809                         goto bad_reg;
7810                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7811                 if (r)
7812                         goto bad_reg;
7813
7814                 rule_idx++;
7815
7816                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7817                         r = -EINVAL;
7818                         goto bad_reg;
7819                 }
7820         }
7821
7822         /* set_regdom takes ownership of rd */
7823         return set_regdom(rd, REGD_SOURCE_CRDA);
7824  bad_reg:
7825         kfree(rd);
7826         return r;
7827 }
7828 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7829
7830 static int validate_scan_freqs(struct nlattr *freqs)
7831 {
7832         struct nlattr *attr1, *attr2;
7833         int n_channels = 0, tmp1, tmp2;
7834
7835         nla_for_each_nested(attr1, freqs, tmp1)
7836                 if (nla_len(attr1) != sizeof(u32))
7837                         return 0;
7838
7839         nla_for_each_nested(attr1, freqs, tmp1) {
7840                 n_channels++;
7841                 /*
7842                  * Some hardware has a limited channel list for
7843                  * scanning, and it is pretty much nonsensical
7844                  * to scan for a channel twice, so disallow that
7845                  * and don't require drivers to check that the
7846                  * channel list they get isn't longer than what
7847                  * they can scan, as long as they can scan all
7848                  * the channels they registered at once.
7849                  */
7850                 nla_for_each_nested(attr2, freqs, tmp2)
7851                         if (attr1 != attr2 &&
7852                             nla_get_u32(attr1) == nla_get_u32(attr2))
7853                                 return 0;
7854         }
7855
7856         return n_channels;
7857 }
7858
7859 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7860 {
7861         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7862 }
7863
7864 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7865                             struct cfg80211_bss_selection *bss_select)
7866 {
7867         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7868         struct nlattr *nest;
7869         int err;
7870         bool found = false;
7871         int i;
7872
7873         /* only process one nested attribute */
7874         nest = nla_data(nla);
7875         if (!nla_ok(nest, nla_len(nest)))
7876                 return -EINVAL;
7877
7878         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7879                                           nest, nl80211_bss_select_policy,
7880                                           NULL);
7881         if (err)
7882                 return err;
7883
7884         /* only one attribute may be given */
7885         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7886                 if (attr[i]) {
7887                         if (found)
7888                                 return -EINVAL;
7889                         found = true;
7890                 }
7891         }
7892
7893         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7894
7895         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7896                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7897
7898         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7899                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7900                 bss_select->param.band_pref =
7901                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7902                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7903                         return -EINVAL;
7904         }
7905
7906         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7907                 struct nl80211_bss_select_rssi_adjust *adj_param;
7908
7909                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7910                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7911                 bss_select->param.adjust.band = adj_param->band;
7912                 bss_select->param.adjust.delta = adj_param->delta;
7913                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7914                         return -EINVAL;
7915         }
7916
7917         /* user-space did not provide behaviour attribute */
7918         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7919                 return -EINVAL;
7920
7921         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7922                 return -EINVAL;
7923
7924         return 0;
7925 }
7926
7927 int nl80211_parse_random_mac(struct nlattr **attrs,
7928                              u8 *mac_addr, u8 *mac_addr_mask)
7929 {
7930         int i;
7931
7932         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7933                 eth_zero_addr(mac_addr);
7934                 eth_zero_addr(mac_addr_mask);
7935                 mac_addr[0] = 0x2;
7936                 mac_addr_mask[0] = 0x3;
7937
7938                 return 0;
7939         }
7940
7941         /* need both or none */
7942         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7943                 return -EINVAL;
7944
7945         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7946         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7947
7948         /* don't allow or configure an mcast address */
7949         if (!is_multicast_ether_addr(mac_addr_mask) ||
7950             is_multicast_ether_addr(mac_addr))
7951                 return -EINVAL;
7952
7953         /*
7954          * allow users to pass a MAC address that has bits set outside
7955          * of the mask, but don't bother drivers with having to deal
7956          * with such bits
7957          */
7958         for (i = 0; i < ETH_ALEN; i++)
7959                 mac_addr[i] &= mac_addr_mask[i];
7960
7961         return 0;
7962 }
7963
7964 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7965 {
7966         ASSERT_WDEV_LOCK(wdev);
7967
7968         if (!cfg80211_beaconing_iface_active(wdev))
7969                 return true;
7970
7971         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7972                 return true;
7973
7974         return regulatory_pre_cac_allowed(wdev->wiphy);
7975 }
7976
7977 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7978                                     enum nl80211_ext_feature_index feat)
7979 {
7980         if (!(flags & flag))
7981                 return true;
7982         if (wiphy_ext_feature_isset(wiphy, feat))
7983                 return true;
7984         return false;
7985 }
7986
7987 static int
7988 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7989                          void *request, struct nlattr **attrs,
7990                          bool is_sched_scan)
7991 {
7992         u8 *mac_addr, *mac_addr_mask;
7993         u32 *flags;
7994         enum nl80211_feature_flags randomness_flag;
7995
7996         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7997                 return 0;
7998
7999         if (is_sched_scan) {
8000                 struct cfg80211_sched_scan_request *req = request;
8001
8002                 randomness_flag = wdev ?
8003                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8004                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8005                 flags = &req->flags;
8006                 mac_addr = req->mac_addr;
8007                 mac_addr_mask = req->mac_addr_mask;
8008         } else {
8009                 struct cfg80211_scan_request *req = request;
8010
8011                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8012                 flags = &req->flags;
8013                 mac_addr = req->mac_addr;
8014                 mac_addr_mask = req->mac_addr_mask;
8015         }
8016
8017         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8018
8019         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8020              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8021             !nl80211_check_scan_feat(wiphy, *flags,
8022                                      NL80211_SCAN_FLAG_LOW_SPAN,
8023                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8024             !nl80211_check_scan_feat(wiphy, *flags,
8025                                      NL80211_SCAN_FLAG_LOW_POWER,
8026                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8027             !nl80211_check_scan_feat(wiphy, *flags,
8028                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8029                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8030             !nl80211_check_scan_feat(wiphy, *flags,
8031                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8032                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8033             !nl80211_check_scan_feat(wiphy, *flags,
8034                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8035                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8036             !nl80211_check_scan_feat(wiphy, *flags,
8037                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8038                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8039             !nl80211_check_scan_feat(wiphy, *flags,
8040                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8041                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8042             !nl80211_check_scan_feat(wiphy, *flags,
8043                                      NL80211_SCAN_FLAG_RANDOM_SN,
8044                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8045             !nl80211_check_scan_feat(wiphy, *flags,
8046                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8047                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8048                 return -EOPNOTSUPP;
8049
8050         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8051                 int err;
8052
8053                 if (!(wiphy->features & randomness_flag) ||
8054                     (wdev && wdev->current_bss))
8055                         return -EOPNOTSUPP;
8056
8057                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8058                 if (err)
8059                         return err;
8060         }
8061
8062         return 0;
8063 }
8064
8065 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8066 {
8067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8068         struct wireless_dev *wdev = info->user_ptr[1];
8069         struct cfg80211_scan_request *request;
8070         struct nlattr *scan_freqs = NULL;
8071         bool scan_freqs_khz = false;
8072         struct nlattr *attr;
8073         struct wiphy *wiphy;
8074         int err, tmp, n_ssids = 0, n_channels, i;
8075         size_t ie_len;
8076
8077         wiphy = &rdev->wiphy;
8078
8079         if (wdev->iftype == NL80211_IFTYPE_NAN)
8080                 return -EOPNOTSUPP;
8081
8082         if (!rdev->ops->scan)
8083                 return -EOPNOTSUPP;
8084
8085         if (rdev->scan_req || rdev->scan_msg)
8086                 return -EBUSY;
8087
8088         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8089                 if (!wiphy_ext_feature_isset(wiphy,
8090                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8091                         return -EOPNOTSUPP;
8092                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8093                 scan_freqs_khz = true;
8094         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8095                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8096
8097         if (scan_freqs) {
8098                 n_channels = validate_scan_freqs(scan_freqs);
8099                 if (!n_channels)
8100                         return -EINVAL;
8101         } else {
8102                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8103         }
8104
8105         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8106                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8107                         n_ssids++;
8108
8109         if (n_ssids > wiphy->max_scan_ssids)
8110                 return -EINVAL;
8111
8112         if (info->attrs[NL80211_ATTR_IE])
8113                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8114         else
8115                 ie_len = 0;
8116
8117         if (ie_len > wiphy->max_scan_ie_len)
8118                 return -EINVAL;
8119
8120         request = kzalloc(sizeof(*request)
8121                         + sizeof(*request->ssids) * n_ssids
8122                         + sizeof(*request->channels) * n_channels
8123                         + ie_len, GFP_KERNEL);
8124         if (!request)
8125                 return -ENOMEM;
8126
8127         if (n_ssids)
8128                 request->ssids = (void *)&request->channels[n_channels];
8129         request->n_ssids = n_ssids;
8130         if (ie_len) {
8131                 if (n_ssids)
8132                         request->ie = (void *)(request->ssids + n_ssids);
8133                 else
8134                         request->ie = (void *)(request->channels + n_channels);
8135         }
8136
8137         i = 0;
8138         if (scan_freqs) {
8139                 /* user specified, bail out if channel not found */
8140                 nla_for_each_nested(attr, scan_freqs, tmp) {
8141                         struct ieee80211_channel *chan;
8142                         int freq = nla_get_u32(attr);
8143
8144                         if (!scan_freqs_khz)
8145                                 freq = MHZ_TO_KHZ(freq);
8146
8147                         chan = ieee80211_get_channel_khz(wiphy, freq);
8148                         if (!chan) {
8149                                 err = -EINVAL;
8150                                 goto out_free;
8151                         }
8152
8153                         /* ignore disabled channels */
8154                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8155                                 continue;
8156
8157                         request->channels[i] = chan;
8158                         i++;
8159                 }
8160         } else {
8161                 enum nl80211_band band;
8162
8163                 /* all channels */
8164                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8165                         int j;
8166
8167                         if (!wiphy->bands[band])
8168                                 continue;
8169                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8170                                 struct ieee80211_channel *chan;
8171
8172                                 chan = &wiphy->bands[band]->channels[j];
8173
8174                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8175                                         continue;
8176
8177                                 request->channels[i] = chan;
8178                                 i++;
8179                         }
8180                 }
8181         }
8182
8183         if (!i) {
8184                 err = -EINVAL;
8185                 goto out_free;
8186         }
8187
8188         request->n_channels = i;
8189
8190         wdev_lock(wdev);
8191         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8192                 struct ieee80211_channel *chan;
8193
8194                 if (request->n_channels != 1) {
8195                         wdev_unlock(wdev);
8196                         err = -EBUSY;
8197                         goto out_free;
8198                 }
8199
8200                 chan = request->channels[0];
8201                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8202                         wdev_unlock(wdev);
8203                         err = -EBUSY;
8204                         goto out_free;
8205                 }
8206         }
8207         wdev_unlock(wdev);
8208
8209         i = 0;
8210         if (n_ssids) {
8211                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8212                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8213                                 err = -EINVAL;
8214                                 goto out_free;
8215                         }
8216                         request->ssids[i].ssid_len = nla_len(attr);
8217                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8218                         i++;
8219                 }
8220         }
8221
8222         if (info->attrs[NL80211_ATTR_IE]) {
8223                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8224                 memcpy((void *)request->ie,
8225                        nla_data(info->attrs[NL80211_ATTR_IE]),
8226                        request->ie_len);
8227         }
8228
8229         for (i = 0; i < NUM_NL80211_BANDS; i++)
8230                 if (wiphy->bands[i])
8231                         request->rates[i] =
8232                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8233
8234         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8235                 nla_for_each_nested(attr,
8236                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8237                                     tmp) {
8238                         enum nl80211_band band = nla_type(attr);
8239
8240                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8241                                 err = -EINVAL;
8242                                 goto out_free;
8243                         }
8244
8245                         if (!wiphy->bands[band])
8246                                 continue;
8247
8248                         err = ieee80211_get_ratemask(wiphy->bands[band],
8249                                                      nla_data(attr),
8250                                                      nla_len(attr),
8251                                                      &request->rates[band]);
8252                         if (err)
8253                                 goto out_free;
8254                 }
8255         }
8256
8257         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8258                 if (!wiphy_ext_feature_isset(wiphy,
8259                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8260                         err = -EOPNOTSUPP;
8261                         goto out_free;
8262                 }
8263
8264                 request->duration =
8265                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8266                 request->duration_mandatory =
8267                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8268         }
8269
8270         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8271                                        false);
8272         if (err)
8273                 goto out_free;
8274
8275         request->no_cck =
8276                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8277
8278         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8279          * BSSID to scan for. This was problematic because that same attribute
8280          * was already used for another purpose (local random MAC address). The
8281          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8282          * compatibility with older userspace components, also use the
8283          * NL80211_ATTR_MAC value here if it can be determined to be used for
8284          * the specific BSSID use case instead of the random MAC address
8285          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8286          */
8287         if (info->attrs[NL80211_ATTR_BSSID])
8288                 memcpy(request->bssid,
8289                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8290         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8291                  info->attrs[NL80211_ATTR_MAC])
8292                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8293                        ETH_ALEN);
8294         else
8295                 eth_broadcast_addr(request->bssid);
8296
8297         request->wdev = wdev;
8298         request->wiphy = &rdev->wiphy;
8299         request->scan_start = jiffies;
8300
8301         rdev->scan_req = request;
8302         err = cfg80211_scan(rdev);
8303
8304         if (err)
8305                 goto out_free;
8306
8307         nl80211_send_scan_start(rdev, wdev);
8308         if (wdev->netdev)
8309                 dev_hold(wdev->netdev);
8310
8311         return 0;
8312
8313  out_free:
8314         rdev->scan_req = NULL;
8315         kfree(request);
8316
8317         return err;
8318 }
8319
8320 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8321 {
8322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8323         struct wireless_dev *wdev = info->user_ptr[1];
8324
8325         if (!rdev->ops->abort_scan)
8326                 return -EOPNOTSUPP;
8327
8328         if (rdev->scan_msg)
8329                 return 0;
8330
8331         if (!rdev->scan_req)
8332                 return -ENOENT;
8333
8334         rdev_abort_scan(rdev, wdev);
8335         return 0;
8336 }
8337
8338 static int
8339 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8340                                struct cfg80211_sched_scan_request *request,
8341                                struct nlattr **attrs)
8342 {
8343         int tmp, err, i = 0;
8344         struct nlattr *attr;
8345
8346         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8347                 u32 interval;
8348
8349                 /*
8350                  * If scan plans are not specified,
8351                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8352                  * case one scan plan will be set with the specified scan
8353                  * interval and infinite number of iterations.
8354                  */
8355                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8356                 if (!interval)
8357                         return -EINVAL;
8358
8359                 request->scan_plans[0].interval =
8360                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8361                 if (!request->scan_plans[0].interval)
8362                         return -EINVAL;
8363
8364                 if (request->scan_plans[0].interval >
8365                     wiphy->max_sched_scan_plan_interval)
8366                         request->scan_plans[0].interval =
8367                                 wiphy->max_sched_scan_plan_interval;
8368
8369                 return 0;
8370         }
8371
8372         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8373                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8374
8375                 if (WARN_ON(i >= n_plans))
8376                         return -EINVAL;
8377
8378                 err = nla_parse_nested_deprecated(plan,
8379                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8380                                                   attr, nl80211_plan_policy,
8381                                                   NULL);
8382                 if (err)
8383                         return err;
8384
8385                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8386                         return -EINVAL;
8387
8388                 request->scan_plans[i].interval =
8389                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8390                 if (!request->scan_plans[i].interval ||
8391                     request->scan_plans[i].interval >
8392                     wiphy->max_sched_scan_plan_interval)
8393                         return -EINVAL;
8394
8395                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8396                         request->scan_plans[i].iterations =
8397                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8398                         if (!request->scan_plans[i].iterations ||
8399                             (request->scan_plans[i].iterations >
8400                              wiphy->max_sched_scan_plan_iterations))
8401                                 return -EINVAL;
8402                 } else if (i < n_plans - 1) {
8403                         /*
8404                          * All scan plans but the last one must specify
8405                          * a finite number of iterations
8406                          */
8407                         return -EINVAL;
8408                 }
8409
8410                 i++;
8411         }
8412
8413         /*
8414          * The last scan plan must not specify the number of
8415          * iterations, it is supposed to run infinitely
8416          */
8417         if (request->scan_plans[n_plans - 1].iterations)
8418                 return  -EINVAL;
8419
8420         return 0;
8421 }
8422
8423 static int
8424 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8425                                        struct cfg80211_match_set *match_sets,
8426                                        struct nlattr *tb_band_rssi,
8427                                        s32 rssi_thold)
8428 {
8429         struct nlattr *attr;
8430         int i, tmp, ret = 0;
8431
8432         if (!wiphy_ext_feature_isset(wiphy,
8433                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8434                 if (tb_band_rssi)
8435                         ret = -EOPNOTSUPP;
8436                 else
8437                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8438                                 match_sets->per_band_rssi_thold[i] =
8439                                         NL80211_SCAN_RSSI_THOLD_OFF;
8440                 return ret;
8441         }
8442
8443         for (i = 0; i < NUM_NL80211_BANDS; i++)
8444                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8445
8446         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8447                 enum nl80211_band band = nla_type(attr);
8448
8449                 if (band < 0 || band >= NUM_NL80211_BANDS)
8450                         return -EINVAL;
8451
8452                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8453         }
8454
8455         return 0;
8456 }
8457
8458 static struct cfg80211_sched_scan_request *
8459 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8460                          struct nlattr **attrs, int max_match_sets)
8461 {
8462         struct cfg80211_sched_scan_request *request;
8463         struct nlattr *attr;
8464         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8465         enum nl80211_band band;
8466         size_t ie_len;
8467         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8468         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8469
8470         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8471                 n_channels = validate_scan_freqs(
8472                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8473                 if (!n_channels)
8474                         return ERR_PTR(-EINVAL);
8475         } else {
8476                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8477         }
8478
8479         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8480                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8481                                     tmp)
8482                         n_ssids++;
8483
8484         if (n_ssids > wiphy->max_sched_scan_ssids)
8485                 return ERR_PTR(-EINVAL);
8486
8487         /*
8488          * First, count the number of 'real' matchsets. Due to an issue with
8489          * the old implementation, matchsets containing only the RSSI attribute
8490          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8491          * RSSI for all matchsets, rather than their own matchset for reporting
8492          * all APs with a strong RSSI. This is needed to be compatible with
8493          * older userspace that treated a matchset with only the RSSI as the
8494          * global RSSI for all other matchsets - if there are other matchsets.
8495          */
8496         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8497                 nla_for_each_nested(attr,
8498                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8499                                     tmp) {
8500                         struct nlattr *rssi;
8501
8502                         err = nla_parse_nested_deprecated(tb,
8503                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8504                                                           attr,
8505                                                           nl80211_match_policy,
8506                                                           NULL);
8507                         if (err)
8508                                 return ERR_PTR(err);
8509
8510                         /* SSID and BSSID are mutually exclusive */
8511                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8512                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8513                                 return ERR_PTR(-EINVAL);
8514
8515                         /* add other standalone attributes here */
8516                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8517                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8518                                 n_match_sets++;
8519                                 continue;
8520                         }
8521                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8522                         if (rssi)
8523                                 default_match_rssi = nla_get_s32(rssi);
8524                 }
8525         }
8526
8527         /* However, if there's no other matchset, add the RSSI one */
8528         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8529                 n_match_sets = 1;
8530
8531         if (n_match_sets > max_match_sets)
8532                 return ERR_PTR(-EINVAL);
8533
8534         if (attrs[NL80211_ATTR_IE])
8535                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8536         else
8537                 ie_len = 0;
8538
8539         if (ie_len > wiphy->max_sched_scan_ie_len)
8540                 return ERR_PTR(-EINVAL);
8541
8542         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8543                 /*
8544                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8545                  * each scan plan already specifies its own interval
8546                  */
8547                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8548                         return ERR_PTR(-EINVAL);
8549
8550                 nla_for_each_nested(attr,
8551                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8552                         n_plans++;
8553         } else {
8554                 /*
8555                  * The scan interval attribute is kept for backward
8556                  * compatibility. If no scan plans are specified and sched scan
8557                  * interval is specified, one scan plan will be set with this
8558                  * scan interval and infinite number of iterations.
8559                  */
8560                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8561                         return ERR_PTR(-EINVAL);
8562
8563                 n_plans = 1;
8564         }
8565
8566         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8567                 return ERR_PTR(-EINVAL);
8568
8569         if (!wiphy_ext_feature_isset(
8570                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8571             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8572              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8573                 return ERR_PTR(-EINVAL);
8574
8575         request = kzalloc(sizeof(*request)
8576                         + sizeof(*request->ssids) * n_ssids
8577                         + sizeof(*request->match_sets) * n_match_sets
8578                         + sizeof(*request->scan_plans) * n_plans
8579                         + sizeof(*request->channels) * n_channels
8580                         + ie_len, GFP_KERNEL);
8581         if (!request)
8582                 return ERR_PTR(-ENOMEM);
8583
8584         if (n_ssids)
8585                 request->ssids = (void *)&request->channels[n_channels];
8586         request->n_ssids = n_ssids;
8587         if (ie_len) {
8588                 if (n_ssids)
8589                         request->ie = (void *)(request->ssids + n_ssids);
8590                 else
8591                         request->ie = (void *)(request->channels + n_channels);
8592         }
8593
8594         if (n_match_sets) {
8595                 if (request->ie)
8596                         request->match_sets = (void *)(request->ie + ie_len);
8597                 else if (n_ssids)
8598                         request->match_sets =
8599                                 (void *)(request->ssids + n_ssids);
8600                 else
8601                         request->match_sets =
8602                                 (void *)(request->channels + n_channels);
8603         }
8604         request->n_match_sets = n_match_sets;
8605
8606         if (n_match_sets)
8607                 request->scan_plans = (void *)(request->match_sets +
8608                                                n_match_sets);
8609         else if (request->ie)
8610                 request->scan_plans = (void *)(request->ie + ie_len);
8611         else if (n_ssids)
8612                 request->scan_plans = (void *)(request->ssids + n_ssids);
8613         else
8614                 request->scan_plans = (void *)(request->channels + n_channels);
8615
8616         request->n_scan_plans = n_plans;
8617
8618         i = 0;
8619         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8620                 /* user specified, bail out if channel not found */
8621                 nla_for_each_nested(attr,
8622                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8623                                     tmp) {
8624                         struct ieee80211_channel *chan;
8625
8626                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8627
8628                         if (!chan) {
8629                                 err = -EINVAL;
8630                                 goto out_free;
8631                         }
8632
8633                         /* ignore disabled channels */
8634                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8635                                 continue;
8636
8637                         request->channels[i] = chan;
8638                         i++;
8639                 }
8640         } else {
8641                 /* all channels */
8642                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8643                         int j;
8644
8645                         if (!wiphy->bands[band])
8646                                 continue;
8647                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8648                                 struct ieee80211_channel *chan;
8649
8650                                 chan = &wiphy->bands[band]->channels[j];
8651
8652                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8653                                         continue;
8654
8655                                 request->channels[i] = chan;
8656                                 i++;
8657                         }
8658                 }
8659         }
8660
8661         if (!i) {
8662                 err = -EINVAL;
8663                 goto out_free;
8664         }
8665
8666         request->n_channels = i;
8667
8668         i = 0;
8669         if (n_ssids) {
8670                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8671                                     tmp) {
8672                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8673                                 err = -EINVAL;
8674                                 goto out_free;
8675                         }
8676                         request->ssids[i].ssid_len = nla_len(attr);
8677                         memcpy(request->ssids[i].ssid, nla_data(attr),
8678                                nla_len(attr));
8679                         i++;
8680                 }
8681         }
8682
8683         i = 0;
8684         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8685                 nla_for_each_nested(attr,
8686                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8687                                     tmp) {
8688                         struct nlattr *ssid, *bssid, *rssi;
8689
8690                         err = nla_parse_nested_deprecated(tb,
8691                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8692                                                           attr,
8693                                                           nl80211_match_policy,
8694                                                           NULL);
8695                         if (err)
8696                                 goto out_free;
8697                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8698                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8699
8700                         if (!ssid && !bssid) {
8701                                 i++;
8702                                 continue;
8703                         }
8704
8705                         if (WARN_ON(i >= n_match_sets)) {
8706                                 /* this indicates a programming error,
8707                                  * the loop above should have verified
8708                                  * things properly
8709                                  */
8710                                 err = -EINVAL;
8711                                 goto out_free;
8712                         }
8713
8714                         if (ssid) {
8715                                 memcpy(request->match_sets[i].ssid.ssid,
8716                                        nla_data(ssid), nla_len(ssid));
8717                                 request->match_sets[i].ssid.ssid_len =
8718                                         nla_len(ssid);
8719                         }
8720                         if (bssid)
8721                                 memcpy(request->match_sets[i].bssid,
8722                                        nla_data(bssid), ETH_ALEN);
8723
8724                         /* special attribute - old implementation w/a */
8725                         request->match_sets[i].rssi_thold = default_match_rssi;
8726                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8727                         if (rssi)
8728                                 request->match_sets[i].rssi_thold =
8729                                         nla_get_s32(rssi);
8730
8731                         /* Parse per band RSSI attribute */
8732                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8733                                 &request->match_sets[i],
8734                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8735                                 request->match_sets[i].rssi_thold);
8736                         if (err)
8737                                 goto out_free;
8738
8739                         i++;
8740                 }
8741
8742                 /* there was no other matchset, so the RSSI one is alone */
8743                 if (i == 0 && n_match_sets)
8744                         request->match_sets[0].rssi_thold = default_match_rssi;
8745
8746                 request->min_rssi_thold = INT_MAX;
8747                 for (i = 0; i < n_match_sets; i++)
8748                         request->min_rssi_thold =
8749                                 min(request->match_sets[i].rssi_thold,
8750                                     request->min_rssi_thold);
8751         } else {
8752                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8753         }
8754
8755         if (ie_len) {
8756                 request->ie_len = ie_len;
8757                 memcpy((void *)request->ie,
8758                        nla_data(attrs[NL80211_ATTR_IE]),
8759                        request->ie_len);
8760         }
8761
8762         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8763         if (err)
8764                 goto out_free;
8765
8766         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8767                 request->delay =
8768                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8769
8770         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8771                 request->relative_rssi = nla_get_s8(
8772                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8773                 request->relative_rssi_set = true;
8774         }
8775
8776         if (request->relative_rssi_set &&
8777             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8778                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8779
8780                 rssi_adjust = nla_data(
8781                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8782                 request->rssi_adjust.band = rssi_adjust->band;
8783                 request->rssi_adjust.delta = rssi_adjust->delta;
8784                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8785                         err = -EINVAL;
8786                         goto out_free;
8787                 }
8788         }
8789
8790         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8791         if (err)
8792                 goto out_free;
8793
8794         request->scan_start = jiffies;
8795
8796         return request;
8797
8798 out_free:
8799         kfree(request);
8800         return ERR_PTR(err);
8801 }
8802
8803 static int nl80211_start_sched_scan(struct sk_buff *skb,
8804                                     struct genl_info *info)
8805 {
8806         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8807         struct net_device *dev = info->user_ptr[1];
8808         struct wireless_dev *wdev = dev->ieee80211_ptr;
8809         struct cfg80211_sched_scan_request *sched_scan_req;
8810         bool want_multi;
8811         int err;
8812
8813         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8814                 return -EOPNOTSUPP;
8815
8816         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8817         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8818         if (err)
8819                 return err;
8820
8821         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8822                                                   info->attrs,
8823                                                   rdev->wiphy.max_match_sets);
8824
8825         err = PTR_ERR_OR_ZERO(sched_scan_req);
8826         if (err)
8827                 goto out_err;
8828
8829         /* leave request id zero for legacy request
8830          * or if driver does not support multi-scheduled scan
8831          */
8832         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8833                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8834
8835         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8836         if (err)
8837                 goto out_free;
8838
8839         sched_scan_req->dev = dev;
8840         sched_scan_req->wiphy = &rdev->wiphy;
8841
8842         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8843                 sched_scan_req->owner_nlportid = info->snd_portid;
8844
8845         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8846
8847         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8848         return 0;
8849
8850 out_free:
8851         kfree(sched_scan_req);
8852 out_err:
8853         return err;
8854 }
8855
8856 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8857                                    struct genl_info *info)
8858 {
8859         struct cfg80211_sched_scan_request *req;
8860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8861         u64 cookie;
8862
8863         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8864                 return -EOPNOTSUPP;
8865
8866         if (info->attrs[NL80211_ATTR_COOKIE]) {
8867                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8868                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8869         }
8870
8871         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8872                                      struct cfg80211_sched_scan_request,
8873                                      list);
8874         if (!req || req->reqid ||
8875             (req->owner_nlportid &&
8876              req->owner_nlportid != info->snd_portid))
8877                 return -ENOENT;
8878
8879         return cfg80211_stop_sched_scan_req(rdev, req, false);
8880 }
8881
8882 static int nl80211_start_radar_detection(struct sk_buff *skb,
8883                                          struct genl_info *info)
8884 {
8885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8886         struct net_device *dev = info->user_ptr[1];
8887         struct wireless_dev *wdev = dev->ieee80211_ptr;
8888         struct wiphy *wiphy = wdev->wiphy;
8889         struct cfg80211_chan_def chandef;
8890         enum nl80211_dfs_regions dfs_region;
8891         unsigned int cac_time_ms;
8892         int err;
8893
8894         dfs_region = reg_get_dfs_region(wiphy);
8895         if (dfs_region == NL80211_DFS_UNSET)
8896                 return -EINVAL;
8897
8898         err = nl80211_parse_chandef(rdev, info, &chandef);
8899         if (err)
8900                 return err;
8901
8902         if (netif_carrier_ok(dev))
8903                 return -EBUSY;
8904
8905         if (wdev->cac_started)
8906                 return -EBUSY;
8907
8908         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8909         if (err < 0)
8910                 return err;
8911
8912         if (err == 0)
8913                 return -EINVAL;
8914
8915         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8916                 return -EINVAL;
8917
8918         /* CAC start is offloaded to HW and can't be started manually */
8919         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8920                 return -EOPNOTSUPP;
8921
8922         if (!rdev->ops->start_radar_detection)
8923                 return -EOPNOTSUPP;
8924
8925         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8926         if (WARN_ON(!cac_time_ms))
8927                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8928
8929         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8930         if (!err) {
8931                 wdev->chandef = chandef;
8932                 wdev->cac_started = true;
8933                 wdev->cac_start_time = jiffies;
8934                 wdev->cac_time_ms = cac_time_ms;
8935         }
8936         return err;
8937 }
8938
8939 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8940                                           struct genl_info *info)
8941 {
8942         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8943         struct net_device *dev = info->user_ptr[1];
8944         struct wireless_dev *wdev = dev->ieee80211_ptr;
8945         struct wiphy *wiphy = wdev->wiphy;
8946         struct cfg80211_chan_def chandef;
8947         enum nl80211_dfs_regions dfs_region;
8948         int err;
8949
8950         dfs_region = reg_get_dfs_region(wiphy);
8951         if (dfs_region == NL80211_DFS_UNSET) {
8952                 GENL_SET_ERR_MSG(info,
8953                                  "DFS Region is not set. Unexpected Radar indication");
8954                 return -EINVAL;
8955         }
8956
8957         err = nl80211_parse_chandef(rdev, info, &chandef);
8958         if (err) {
8959                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8960                 return err;
8961         }
8962
8963         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8964         if (err < 0) {
8965                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8966                 return err;
8967         }
8968
8969         if (err == 0) {
8970                 GENL_SET_ERR_MSG(info,
8971                                  "Unexpected Radar indication for chandef/iftype");
8972                 return -EINVAL;
8973         }
8974
8975         /* Do not process this notification if radar is already detected
8976          * by kernel on this channel, and return success.
8977          */
8978         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8979                 return 0;
8980
8981         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8982
8983         cfg80211_sched_dfs_chan_update(rdev);
8984
8985         rdev->radar_chandef = chandef;
8986
8987         /* Propagate this notification to other radios as well */
8988         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8989
8990         return 0;
8991 }
8992
8993 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8994 {
8995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8996         struct net_device *dev = info->user_ptr[1];
8997         struct wireless_dev *wdev = dev->ieee80211_ptr;
8998         struct cfg80211_csa_settings params;
8999         /* csa_attrs is defined static to avoid waste of stack size - this
9000          * function is called under RTNL lock, so this should not be a problem.
9001          */
9002         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
9003         int err;
9004         bool need_new_beacon = false;
9005         bool need_handle_dfs_flag = true;
9006         int len, i;
9007         u32 cs_count;
9008
9009         if (!rdev->ops->channel_switch ||
9010             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9011                 return -EOPNOTSUPP;
9012
9013         switch (dev->ieee80211_ptr->iftype) {
9014         case NL80211_IFTYPE_AP:
9015         case NL80211_IFTYPE_P2P_GO:
9016                 need_new_beacon = true;
9017                 /* For all modes except AP the handle_dfs flag needs to be
9018                  * supplied to tell the kernel that userspace will handle radar
9019                  * events when they happen. Otherwise a switch to a channel
9020                  * requiring DFS will be rejected.
9021                  */
9022                 need_handle_dfs_flag = false;
9023
9024                 /* useless if AP is not running */
9025                 if (!wdev->beacon_interval)
9026                         return -ENOTCONN;
9027                 break;
9028         case NL80211_IFTYPE_ADHOC:
9029                 if (!wdev->ssid_len)
9030                         return -ENOTCONN;
9031                 break;
9032         case NL80211_IFTYPE_MESH_POINT:
9033                 if (!wdev->mesh_id_len)
9034                         return -ENOTCONN;
9035                 break;
9036         default:
9037                 return -EOPNOTSUPP;
9038         }
9039
9040         memset(&params, 0, sizeof(params));
9041         params.beacon_csa.ftm_responder = -1;
9042
9043         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9044             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9045                 return -EINVAL;
9046
9047         /* only important for AP, IBSS and mesh create IEs internally */
9048         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9049                 return -EINVAL;
9050
9051         /* Even though the attribute is u32, the specification says
9052          * u8, so let's make sure we don't overflow.
9053          */
9054         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9055         if (cs_count > 255)
9056                 return -EINVAL;
9057
9058         params.count = cs_count;
9059
9060         if (!need_new_beacon)
9061                 goto skip_beacons;
9062
9063         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9064         if (err)
9065                 return err;
9066
9067         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9068                                           info->attrs[NL80211_ATTR_CSA_IES],
9069                                           nl80211_policy, info->extack);
9070         if (err)
9071                 return err;
9072
9073         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9074         if (err)
9075                 return err;
9076
9077         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9078                 return -EINVAL;
9079
9080         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9081         if (!len || (len % sizeof(u16)))
9082                 return -EINVAL;
9083
9084         params.n_counter_offsets_beacon = len / sizeof(u16);
9085         if (rdev->wiphy.max_num_csa_counters &&
9086             (params.n_counter_offsets_beacon >
9087              rdev->wiphy.max_num_csa_counters))
9088                 return -EINVAL;
9089
9090         params.counter_offsets_beacon =
9091                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9092
9093         /* sanity checks - counters should fit and be the same */
9094         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9095                 u16 offset = params.counter_offsets_beacon[i];
9096
9097                 if (offset >= params.beacon_csa.tail_len)
9098                         return -EINVAL;
9099
9100                 if (params.beacon_csa.tail[offset] != params.count)
9101                         return -EINVAL;
9102         }
9103
9104         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9105                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9106                 if (!len || (len % sizeof(u16)))
9107                         return -EINVAL;
9108
9109                 params.n_counter_offsets_presp = len / sizeof(u16);
9110                 if (rdev->wiphy.max_num_csa_counters &&
9111                     (params.n_counter_offsets_presp >
9112                      rdev->wiphy.max_num_csa_counters))
9113                         return -EINVAL;
9114
9115                 params.counter_offsets_presp =
9116                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9117
9118                 /* sanity checks - counters should fit and be the same */
9119                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9120                         u16 offset = params.counter_offsets_presp[i];
9121
9122                         if (offset >= params.beacon_csa.probe_resp_len)
9123                                 return -EINVAL;
9124
9125                         if (params.beacon_csa.probe_resp[offset] !=
9126                             params.count)
9127                                 return -EINVAL;
9128                 }
9129         }
9130
9131 skip_beacons:
9132         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9133         if (err)
9134                 return err;
9135
9136         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9137                                            wdev->iftype))
9138                 return -EINVAL;
9139
9140         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9141                                             &params.chandef,
9142                                             wdev->iftype);
9143         if (err < 0)
9144                 return err;
9145
9146         if (err > 0) {
9147                 params.radar_required = true;
9148                 if (need_handle_dfs_flag &&
9149                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9150                         return -EINVAL;
9151                 }
9152         }
9153
9154         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9155                 params.block_tx = true;
9156
9157         wdev_lock(wdev);
9158         err = rdev_channel_switch(rdev, dev, &params);
9159         wdev_unlock(wdev);
9160
9161         return err;
9162 }
9163
9164 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9165                             u32 seq, int flags,
9166                             struct cfg80211_registered_device *rdev,
9167                             struct wireless_dev *wdev,
9168                             struct cfg80211_internal_bss *intbss)
9169 {
9170         struct cfg80211_bss *res = &intbss->pub;
9171         const struct cfg80211_bss_ies *ies;
9172         void *hdr;
9173         struct nlattr *bss;
9174
9175         ASSERT_WDEV_LOCK(wdev);
9176
9177         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9178                              NL80211_CMD_NEW_SCAN_RESULTS);
9179         if (!hdr)
9180                 return -1;
9181
9182         genl_dump_check_consistent(cb, hdr);
9183
9184         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9185                 goto nla_put_failure;
9186         if (wdev->netdev &&
9187             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9188                 goto nla_put_failure;
9189         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9190                               NL80211_ATTR_PAD))
9191                 goto nla_put_failure;
9192
9193         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9194         if (!bss)
9195                 goto nla_put_failure;
9196         if ((!is_zero_ether_addr(res->bssid) &&
9197              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9198                 goto nla_put_failure;
9199
9200         rcu_read_lock();
9201         /* indicate whether we have probe response data or not */
9202         if (rcu_access_pointer(res->proberesp_ies) &&
9203             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9204                 goto fail_unlock_rcu;
9205
9206         /* this pointer prefers to be pointed to probe response data
9207          * but is always valid
9208          */
9209         ies = rcu_dereference(res->ies);
9210         if (ies) {
9211                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9212                                       NL80211_BSS_PAD))
9213                         goto fail_unlock_rcu;
9214                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9215                                         ies->len, ies->data))
9216                         goto fail_unlock_rcu;
9217         }
9218
9219         /* and this pointer is always (unless driver didn't know) beacon data */
9220         ies = rcu_dereference(res->beacon_ies);
9221         if (ies && ies->from_beacon) {
9222                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9223                                       NL80211_BSS_PAD))
9224                         goto fail_unlock_rcu;
9225                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9226                                         ies->len, ies->data))
9227                         goto fail_unlock_rcu;
9228         }
9229         rcu_read_unlock();
9230
9231         if (res->beacon_interval &&
9232             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9233                 goto nla_put_failure;
9234         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9235             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9236             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9237                         res->channel->freq_offset) ||
9238             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9239             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9240                         jiffies_to_msecs(jiffies - intbss->ts)))
9241                 goto nla_put_failure;
9242
9243         if (intbss->parent_tsf &&
9244             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9245                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9246              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9247                      intbss->parent_bssid)))
9248                 goto nla_put_failure;
9249
9250         if (intbss->ts_boottime &&
9251             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9252                               intbss->ts_boottime, NL80211_BSS_PAD))
9253                 goto nla_put_failure;
9254
9255         if (!nl80211_put_signal(msg, intbss->pub.chains,
9256                                 intbss->pub.chain_signal,
9257                                 NL80211_BSS_CHAIN_SIGNAL))
9258                 goto nla_put_failure;
9259
9260         switch (rdev->wiphy.signal_type) {
9261         case CFG80211_SIGNAL_TYPE_MBM:
9262                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9263                         goto nla_put_failure;
9264                 break;
9265         case CFG80211_SIGNAL_TYPE_UNSPEC:
9266                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9267                         goto nla_put_failure;
9268                 break;
9269         default:
9270                 break;
9271         }
9272
9273         switch (wdev->iftype) {
9274         case NL80211_IFTYPE_P2P_CLIENT:
9275         case NL80211_IFTYPE_STATION:
9276                 if (intbss == wdev->current_bss &&
9277                     nla_put_u32(msg, NL80211_BSS_STATUS,
9278                                 NL80211_BSS_STATUS_ASSOCIATED))
9279                         goto nla_put_failure;
9280                 break;
9281         case NL80211_IFTYPE_ADHOC:
9282                 if (intbss == wdev->current_bss &&
9283                     nla_put_u32(msg, NL80211_BSS_STATUS,
9284                                 NL80211_BSS_STATUS_IBSS_JOINED))
9285                         goto nla_put_failure;
9286                 break;
9287         default:
9288                 break;
9289         }
9290
9291         nla_nest_end(msg, bss);
9292
9293         genlmsg_end(msg, hdr);
9294         return 0;
9295
9296  fail_unlock_rcu:
9297         rcu_read_unlock();
9298  nla_put_failure:
9299         genlmsg_cancel(msg, hdr);
9300         return -EMSGSIZE;
9301 }
9302
9303 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9304 {
9305         struct cfg80211_registered_device *rdev;
9306         struct cfg80211_internal_bss *scan;
9307         struct wireless_dev *wdev;
9308         int start = cb->args[2], idx = 0;
9309         int err;
9310
9311         rtnl_lock();
9312         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9313         if (err) {
9314                 rtnl_unlock();
9315                 return err;
9316         }
9317
9318         wdev_lock(wdev);
9319         spin_lock_bh(&rdev->bss_lock);
9320
9321         /*
9322          * dump_scan will be called multiple times to break up the scan results
9323          * into multiple messages.  It is unlikely that any more bss-es will be
9324          * expired after the first call, so only call only call this on the
9325          * first dump_scan invocation.
9326          */
9327         if (start == 0)
9328                 cfg80211_bss_expire(rdev);
9329
9330         cb->seq = rdev->bss_generation;
9331
9332         list_for_each_entry(scan, &rdev->bss_list, list) {
9333                 if (++idx <= start)
9334                         continue;
9335                 if (nl80211_send_bss(skb, cb,
9336                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9337                                 rdev, wdev, scan) < 0) {
9338                         idx--;
9339                         break;
9340                 }
9341         }
9342
9343         spin_unlock_bh(&rdev->bss_lock);
9344         wdev_unlock(wdev);
9345
9346         cb->args[2] = idx;
9347         rtnl_unlock();
9348
9349         return skb->len;
9350 }
9351
9352 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9353                                int flags, struct net_device *dev,
9354                                bool allow_radio_stats,
9355                                struct survey_info *survey)
9356 {
9357         void *hdr;
9358         struct nlattr *infoattr;
9359
9360         /* skip radio stats if userspace didn't request them */
9361         if (!survey->channel && !allow_radio_stats)
9362                 return 0;
9363
9364         hdr = nl80211hdr_put(msg, portid, seq, flags,
9365                              NL80211_CMD_NEW_SURVEY_RESULTS);
9366         if (!hdr)
9367                 return -ENOMEM;
9368
9369         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9370                 goto nla_put_failure;
9371
9372         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9373         if (!infoattr)
9374                 goto nla_put_failure;
9375
9376         if (survey->channel &&
9377             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9378                         survey->channel->center_freq))
9379                 goto nla_put_failure;
9380
9381         if (survey->channel && survey->channel->freq_offset &&
9382             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9383                         survey->channel->freq_offset))
9384                 goto nla_put_failure;
9385
9386         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9387             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9388                 goto nla_put_failure;
9389         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9390             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9391                 goto nla_put_failure;
9392         if ((survey->filled & SURVEY_INFO_TIME) &&
9393             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9394                         survey->time, NL80211_SURVEY_INFO_PAD))
9395                 goto nla_put_failure;
9396         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9397             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9398                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9399                 goto nla_put_failure;
9400         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9401             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9402                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9403                 goto nla_put_failure;
9404         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9405             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9406                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9407                 goto nla_put_failure;
9408         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9409             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9410                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9411                 goto nla_put_failure;
9412         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9413             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9414                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9415                 goto nla_put_failure;
9416         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9417             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9418                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9419                 goto nla_put_failure;
9420
9421         nla_nest_end(msg, infoattr);
9422
9423         genlmsg_end(msg, hdr);
9424         return 0;
9425
9426  nla_put_failure:
9427         genlmsg_cancel(msg, hdr);
9428         return -EMSGSIZE;
9429 }
9430
9431 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9432 {
9433         struct nlattr **attrbuf;
9434         struct survey_info survey;
9435         struct cfg80211_registered_device *rdev;
9436         struct wireless_dev *wdev;
9437         int survey_idx = cb->args[2];
9438         int res;
9439         bool radio_stats;
9440
9441         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9442         if (!attrbuf)
9443                 return -ENOMEM;
9444
9445         rtnl_lock();
9446         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9447         if (res)
9448                 goto out_err;
9449
9450         /* prepare_wdev_dump parsed the attributes */
9451         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9452
9453         if (!wdev->netdev) {
9454                 res = -EINVAL;
9455                 goto out_err;
9456         }
9457
9458         if (!rdev->ops->dump_survey) {
9459                 res = -EOPNOTSUPP;
9460                 goto out_err;
9461         }
9462
9463         while (1) {
9464                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9465                 if (res == -ENOENT)
9466                         break;
9467                 if (res)
9468                         goto out_err;
9469
9470                 /* don't send disabled channels, but do send non-channel data */
9471                 if (survey.channel &&
9472                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9473                         survey_idx++;
9474                         continue;
9475                 }
9476
9477                 if (nl80211_send_survey(skb,
9478                                 NETLINK_CB(cb->skb).portid,
9479                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9480                                 wdev->netdev, radio_stats, &survey) < 0)
9481                         goto out;
9482                 survey_idx++;
9483         }
9484
9485  out:
9486         cb->args[2] = survey_idx;
9487         res = skb->len;
9488  out_err:
9489         kfree(attrbuf);
9490         rtnl_unlock();
9491         return res;
9492 }
9493
9494 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9495 {
9496         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9497                                   NL80211_WPA_VERSION_2 |
9498                                   NL80211_WPA_VERSION_3));
9499 }
9500
9501 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9502 {
9503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9504         struct net_device *dev = info->user_ptr[1];
9505         struct ieee80211_channel *chan;
9506         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9507         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9508         enum nl80211_auth_type auth_type;
9509         struct key_parse key;
9510         bool local_state_change;
9511         u32 freq;
9512
9513         if (!info->attrs[NL80211_ATTR_MAC])
9514                 return -EINVAL;
9515
9516         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9517                 return -EINVAL;
9518
9519         if (!info->attrs[NL80211_ATTR_SSID])
9520                 return -EINVAL;
9521
9522         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9523                 return -EINVAL;
9524
9525         err = nl80211_parse_key(info, &key);
9526         if (err)
9527                 return err;
9528
9529         if (key.idx >= 0) {
9530                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9531                         return -EINVAL;
9532                 if (!key.p.key || !key.p.key_len)
9533                         return -EINVAL;
9534                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9535                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9536                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9537                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9538                         return -EINVAL;
9539                 if (key.idx > 3)
9540                         return -EINVAL;
9541         } else {
9542                 key.p.key_len = 0;
9543                 key.p.key = NULL;
9544         }
9545
9546         if (key.idx >= 0) {
9547                 int i;
9548                 bool ok = false;
9549
9550                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9551                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9552                                 ok = true;
9553                                 break;
9554                         }
9555                 }
9556                 if (!ok)
9557                         return -EINVAL;
9558         }
9559
9560         if (!rdev->ops->auth)
9561                 return -EOPNOTSUPP;
9562
9563         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9564             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9565                 return -EOPNOTSUPP;
9566
9567         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9568         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9569         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9570                 freq +=
9571                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9572
9573         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9574         if (!chan)
9575                 return -EINVAL;
9576
9577         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9578         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9579
9580         if (info->attrs[NL80211_ATTR_IE]) {
9581                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9582                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9583         }
9584
9585         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9586         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9587                 return -EINVAL;
9588
9589         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9590              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9591              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9592              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9593             !info->attrs[NL80211_ATTR_AUTH_DATA])
9594                 return -EINVAL;
9595
9596         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9597                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9598                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9599                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9600                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9601                         return -EINVAL;
9602                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9603                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9604         }
9605
9606         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9607
9608         /*
9609          * Since we no longer track auth state, ignore
9610          * requests to only change local state.
9611          */
9612         if (local_state_change)
9613                 return 0;
9614
9615         wdev_lock(dev->ieee80211_ptr);
9616         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9617                                  ssid, ssid_len, ie, ie_len,
9618                                  key.p.key, key.p.key_len, key.idx,
9619                                  auth_data, auth_data_len);
9620         wdev_unlock(dev->ieee80211_ptr);
9621         return err;
9622 }
9623
9624 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9625                                      struct genl_info *info)
9626 {
9627         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9628                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9629                 return -EINVAL;
9630         }
9631
9632         if (!rdev->ops->tx_control_port ||
9633             !wiphy_ext_feature_isset(&rdev->wiphy,
9634                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9635                 return -EOPNOTSUPP;
9636
9637         return 0;
9638 }
9639
9640 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9641                                    struct genl_info *info,
9642                                    struct cfg80211_crypto_settings *settings,
9643                                    int cipher_limit)
9644 {
9645         memset(settings, 0, sizeof(*settings));
9646
9647         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9648
9649         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9650                 u16 proto;
9651
9652                 proto = nla_get_u16(
9653                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9654                 settings->control_port_ethertype = cpu_to_be16(proto);
9655                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9656                     proto != ETH_P_PAE)
9657                         return -EINVAL;
9658                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9659                         settings->control_port_no_encrypt = true;
9660         } else
9661                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9662
9663         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9664                 int r = validate_pae_over_nl80211(rdev, info);
9665
9666                 if (r < 0)
9667                         return r;
9668
9669                 settings->control_port_over_nl80211 = true;
9670
9671                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9672                         settings->control_port_no_preauth = true;
9673         }
9674
9675         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9676                 void *data;
9677                 int len, i;
9678
9679                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9680                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9681                 settings->n_ciphers_pairwise = len / sizeof(u32);
9682
9683                 if (len % sizeof(u32))
9684                         return -EINVAL;
9685
9686                 if (settings->n_ciphers_pairwise > cipher_limit)
9687                         return -EINVAL;
9688
9689                 memcpy(settings->ciphers_pairwise, data, len);
9690
9691                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9692                         if (!cfg80211_supported_cipher_suite(
9693                                         &rdev->wiphy,
9694                                         settings->ciphers_pairwise[i]))
9695                                 return -EINVAL;
9696         }
9697
9698         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9699                 settings->cipher_group =
9700                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9701                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9702                                                      settings->cipher_group))
9703                         return -EINVAL;
9704         }
9705
9706         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9707                 settings->wpa_versions =
9708                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9709                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9710                         return -EINVAL;
9711         }
9712
9713         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9714                 void *data;
9715                 int len;
9716
9717                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9718                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9719                 settings->n_akm_suites = len / sizeof(u32);
9720
9721                 if (len % sizeof(u32))
9722                         return -EINVAL;
9723
9724                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9725                         return -EINVAL;
9726
9727                 memcpy(settings->akm_suites, data, len);
9728         }
9729
9730         if (info->attrs[NL80211_ATTR_PMK]) {
9731                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9732                         return -EINVAL;
9733                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9734                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9735                     !wiphy_ext_feature_isset(&rdev->wiphy,
9736                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9737                         return -EINVAL;
9738                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9739         }
9740
9741         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9742                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9743                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9744                     !wiphy_ext_feature_isset(&rdev->wiphy,
9745                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9746                         return -EINVAL;
9747                 settings->sae_pwd =
9748                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9749                 settings->sae_pwd_len =
9750                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9751         }
9752
9753         return 0;
9754 }
9755
9756 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9757 {
9758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9759         struct net_device *dev = info->user_ptr[1];
9760         struct ieee80211_channel *chan;
9761         struct cfg80211_assoc_request req = {};
9762         const u8 *bssid, *ssid;
9763         int err, ssid_len = 0;
9764         u32 freq;
9765
9766         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9767             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9768                 return -EPERM;
9769
9770         if (!info->attrs[NL80211_ATTR_MAC] ||
9771             !info->attrs[NL80211_ATTR_SSID] ||
9772             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9773                 return -EINVAL;
9774
9775         if (!rdev->ops->assoc)
9776                 return -EOPNOTSUPP;
9777
9778         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9779             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9780                 return -EOPNOTSUPP;
9781
9782         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9783
9784         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9785         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9786                 freq +=
9787                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9788         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9789         if (!chan)
9790                 return -EINVAL;
9791
9792         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9793         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9794
9795         if (info->attrs[NL80211_ATTR_IE]) {
9796                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9797                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9798         }
9799
9800         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9801                 enum nl80211_mfp mfp =
9802                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9803                 if (mfp == NL80211_MFP_REQUIRED)
9804                         req.use_mfp = true;
9805                 else if (mfp != NL80211_MFP_NO)
9806                         return -EINVAL;
9807         }
9808
9809         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9810                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9811
9812         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9813                 req.flags |= ASSOC_REQ_DISABLE_HT;
9814
9815         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9816                 memcpy(&req.ht_capa_mask,
9817                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9818                        sizeof(req.ht_capa_mask));
9819
9820         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9821                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9822                         return -EINVAL;
9823                 memcpy(&req.ht_capa,
9824                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9825                        sizeof(req.ht_capa));
9826         }
9827
9828         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9829                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9830
9831         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9832                 memcpy(&req.vht_capa_mask,
9833                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9834                        sizeof(req.vht_capa_mask));
9835
9836         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9837                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9838                         return -EINVAL;
9839                 memcpy(&req.vht_capa,
9840                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9841                        sizeof(req.vht_capa));
9842         }
9843
9844         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9845                 if (!((rdev->wiphy.features &
9846                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9847                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9848                     !wiphy_ext_feature_isset(&rdev->wiphy,
9849                                              NL80211_EXT_FEATURE_RRM))
9850                         return -EINVAL;
9851                 req.flags |= ASSOC_REQ_USE_RRM;
9852         }
9853
9854         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9855                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9856                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9857                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9858                         return -EINVAL;
9859                 req.fils_nonces =
9860                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9861         }
9862
9863         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9864                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9865                         return -EINVAL;
9866                 memcpy(&req.s1g_capa_mask,
9867                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9868                        sizeof(req.s1g_capa_mask));
9869         }
9870
9871         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9872                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9873                         return -EINVAL;
9874                 memcpy(&req.s1g_capa,
9875                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9876                        sizeof(req.s1g_capa));
9877         }
9878
9879         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9880         if (!err) {
9881                 wdev_lock(dev->ieee80211_ptr);
9882
9883                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9884                                           ssid, ssid_len, &req);
9885
9886                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9887                         dev->ieee80211_ptr->conn_owner_nlportid =
9888                                 info->snd_portid;
9889                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9890                                bssid, ETH_ALEN);
9891                 }
9892
9893                 wdev_unlock(dev->ieee80211_ptr);
9894         }
9895
9896         return err;
9897 }
9898
9899 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9900 {
9901         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9902         struct net_device *dev = info->user_ptr[1];
9903         const u8 *ie = NULL, *bssid;
9904         int ie_len = 0, err;
9905         u16 reason_code;
9906         bool local_state_change;
9907
9908         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9909             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9910                 return -EPERM;
9911
9912         if (!info->attrs[NL80211_ATTR_MAC])
9913                 return -EINVAL;
9914
9915         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9916                 return -EINVAL;
9917
9918         if (!rdev->ops->deauth)
9919                 return -EOPNOTSUPP;
9920
9921         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9922             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9923                 return -EOPNOTSUPP;
9924
9925         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9926
9927         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9928         if (reason_code == 0) {
9929                 /* Reason Code 0 is reserved */
9930                 return -EINVAL;
9931         }
9932
9933         if (info->attrs[NL80211_ATTR_IE]) {
9934                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9935                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9936         }
9937
9938         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9939
9940         wdev_lock(dev->ieee80211_ptr);
9941         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9942                                    local_state_change);
9943         wdev_unlock(dev->ieee80211_ptr);
9944         return err;
9945 }
9946
9947 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9948 {
9949         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9950         struct net_device *dev = info->user_ptr[1];
9951         const u8 *ie = NULL, *bssid;
9952         int ie_len = 0, err;
9953         u16 reason_code;
9954         bool local_state_change;
9955
9956         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9957             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9958                 return -EPERM;
9959
9960         if (!info->attrs[NL80211_ATTR_MAC])
9961                 return -EINVAL;
9962
9963         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9964                 return -EINVAL;
9965
9966         if (!rdev->ops->disassoc)
9967                 return -EOPNOTSUPP;
9968
9969         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9970             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9971                 return -EOPNOTSUPP;
9972
9973         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9974
9975         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9976         if (reason_code == 0) {
9977                 /* Reason Code 0 is reserved */
9978                 return -EINVAL;
9979         }
9980
9981         if (info->attrs[NL80211_ATTR_IE]) {
9982                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9983                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9984         }
9985
9986         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9987
9988         wdev_lock(dev->ieee80211_ptr);
9989         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9990                                      local_state_change);
9991         wdev_unlock(dev->ieee80211_ptr);
9992         return err;
9993 }
9994
9995 static bool
9996 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9997                          int mcast_rate[NUM_NL80211_BANDS],
9998                          int rateval)
9999 {
10000         struct wiphy *wiphy = &rdev->wiphy;
10001         bool found = false;
10002         int band, i;
10003
10004         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10005                 struct ieee80211_supported_band *sband;
10006
10007                 sband = wiphy->bands[band];
10008                 if (!sband)
10009                         continue;
10010
10011                 for (i = 0; i < sband->n_bitrates; i++) {
10012                         if (sband->bitrates[i].bitrate == rateval) {
10013                                 mcast_rate[band] = i + 1;
10014                                 found = true;
10015                                 break;
10016                         }
10017                 }
10018         }
10019
10020         return found;
10021 }
10022
10023 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10024 {
10025         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10026         struct net_device *dev = info->user_ptr[1];
10027         struct cfg80211_ibss_params ibss;
10028         struct wiphy *wiphy;
10029         struct cfg80211_cached_keys *connkeys = NULL;
10030         int err;
10031
10032         memset(&ibss, 0, sizeof(ibss));
10033
10034         if (!info->attrs[NL80211_ATTR_SSID] ||
10035             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10036                 return -EINVAL;
10037
10038         ibss.beacon_interval = 100;
10039
10040         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10041                 ibss.beacon_interval =
10042                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10043
10044         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10045                                            ibss.beacon_interval);
10046         if (err)
10047                 return err;
10048
10049         if (!rdev->ops->join_ibss)
10050                 return -EOPNOTSUPP;
10051
10052         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10053                 return -EOPNOTSUPP;
10054
10055         wiphy = &rdev->wiphy;
10056
10057         if (info->attrs[NL80211_ATTR_MAC]) {
10058                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10059
10060                 if (!is_valid_ether_addr(ibss.bssid))
10061                         return -EINVAL;
10062         }
10063         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10064         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10065
10066         if (info->attrs[NL80211_ATTR_IE]) {
10067                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10068                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10069         }
10070
10071         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10072         if (err)
10073                 return err;
10074
10075         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10076                                      NL80211_IFTYPE_ADHOC))
10077                 return -EINVAL;
10078
10079         switch (ibss.chandef.width) {
10080         case NL80211_CHAN_WIDTH_5:
10081         case NL80211_CHAN_WIDTH_10:
10082         case NL80211_CHAN_WIDTH_20_NOHT:
10083                 break;
10084         case NL80211_CHAN_WIDTH_20:
10085         case NL80211_CHAN_WIDTH_40:
10086                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10087                         return -EINVAL;
10088                 break;
10089         case NL80211_CHAN_WIDTH_80:
10090         case NL80211_CHAN_WIDTH_80P80:
10091         case NL80211_CHAN_WIDTH_160:
10092                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10093                         return -EINVAL;
10094                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10095                                              NL80211_EXT_FEATURE_VHT_IBSS))
10096                         return -EINVAL;
10097                 break;
10098         default:
10099                 return -EINVAL;
10100         }
10101
10102         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10103         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10104
10105         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10106                 u8 *rates =
10107                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10108                 int n_rates =
10109                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10110                 struct ieee80211_supported_band *sband =
10111                         wiphy->bands[ibss.chandef.chan->band];
10112
10113                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10114                                              &ibss.basic_rates);
10115                 if (err)
10116                         return err;
10117         }
10118
10119         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10120                 memcpy(&ibss.ht_capa_mask,
10121                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10122                        sizeof(ibss.ht_capa_mask));
10123
10124         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10125                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10126                         return -EINVAL;
10127                 memcpy(&ibss.ht_capa,
10128                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10129                        sizeof(ibss.ht_capa));
10130         }
10131
10132         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10133             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10134                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10135                 return -EINVAL;
10136
10137         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10138                 bool no_ht = false;
10139
10140                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10141                 if (IS_ERR(connkeys))
10142                         return PTR_ERR(connkeys);
10143
10144                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10145                     no_ht) {
10146                         kfree_sensitive(connkeys);
10147                         return -EINVAL;
10148                 }
10149         }
10150
10151         ibss.control_port =
10152                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10153
10154         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10155                 int r = validate_pae_over_nl80211(rdev, info);
10156
10157                 if (r < 0) {
10158                         kfree_sensitive(connkeys);
10159                         return r;
10160                 }
10161
10162                 ibss.control_port_over_nl80211 = true;
10163         }
10164
10165         ibss.userspace_handles_dfs =
10166                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10167
10168         wdev_lock(dev->ieee80211_ptr);
10169         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10170         if (err)
10171                 kfree_sensitive(connkeys);
10172         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10173                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10174         wdev_unlock(dev->ieee80211_ptr);
10175
10176         return err;
10177 }
10178
10179 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10180 {
10181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10182         struct net_device *dev = info->user_ptr[1];
10183
10184         if (!rdev->ops->leave_ibss)
10185                 return -EOPNOTSUPP;
10186
10187         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10188                 return -EOPNOTSUPP;
10189
10190         return cfg80211_leave_ibss(rdev, dev, false);
10191 }
10192
10193 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10194 {
10195         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10196         struct net_device *dev = info->user_ptr[1];
10197         int mcast_rate[NUM_NL80211_BANDS];
10198         u32 nla_rate;
10199         int err;
10200
10201         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10202             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10203             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10204                 return -EOPNOTSUPP;
10205
10206         if (!rdev->ops->set_mcast_rate)
10207                 return -EOPNOTSUPP;
10208
10209         memset(mcast_rate, 0, sizeof(mcast_rate));
10210
10211         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10212                 return -EINVAL;
10213
10214         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10215         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10216                 return -EINVAL;
10217
10218         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10219
10220         return err;
10221 }
10222
10223 static struct sk_buff *
10224 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10225                             struct wireless_dev *wdev, int approxlen,
10226                             u32 portid, u32 seq, enum nl80211_commands cmd,
10227                             enum nl80211_attrs attr,
10228                             const struct nl80211_vendor_cmd_info *info,
10229                             gfp_t gfp)
10230 {
10231         struct sk_buff *skb;
10232         void *hdr;
10233         struct nlattr *data;
10234
10235         skb = nlmsg_new(approxlen + 100, gfp);
10236         if (!skb)
10237                 return NULL;
10238
10239         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10240         if (!hdr) {
10241                 kfree_skb(skb);
10242                 return NULL;
10243         }
10244
10245         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10246                 goto nla_put_failure;
10247
10248         if (info) {
10249                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10250                                 info->vendor_id))
10251                         goto nla_put_failure;
10252                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10253                                 info->subcmd))
10254                         goto nla_put_failure;
10255         }
10256
10257         if (wdev) {
10258                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10259                                       wdev_id(wdev), NL80211_ATTR_PAD))
10260                         goto nla_put_failure;
10261                 if (wdev->netdev &&
10262                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10263                                 wdev->netdev->ifindex))
10264                         goto nla_put_failure;
10265         }
10266
10267         data = nla_nest_start_noflag(skb, attr);
10268         if (!data)
10269                 goto nla_put_failure;
10270
10271         ((void **)skb->cb)[0] = rdev;
10272         ((void **)skb->cb)[1] = hdr;
10273         ((void **)skb->cb)[2] = data;
10274
10275         return skb;
10276
10277  nla_put_failure:
10278         kfree_skb(skb);
10279         return NULL;
10280 }
10281
10282 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10283                                            struct wireless_dev *wdev,
10284                                            enum nl80211_commands cmd,
10285                                            enum nl80211_attrs attr,
10286                                            unsigned int portid,
10287                                            int vendor_event_idx,
10288                                            int approxlen, gfp_t gfp)
10289 {
10290         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10291         const struct nl80211_vendor_cmd_info *info;
10292
10293         switch (cmd) {
10294         case NL80211_CMD_TESTMODE:
10295                 if (WARN_ON(vendor_event_idx != -1))
10296                         return NULL;
10297                 info = NULL;
10298                 break;
10299         case NL80211_CMD_VENDOR:
10300                 if (WARN_ON(vendor_event_idx < 0 ||
10301                             vendor_event_idx >= wiphy->n_vendor_events))
10302                         return NULL;
10303                 info = &wiphy->vendor_events[vendor_event_idx];
10304                 break;
10305         default:
10306                 WARN_ON(1);
10307                 return NULL;
10308         }
10309
10310         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10311                                            cmd, attr, info, gfp);
10312 }
10313 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10314
10315 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10316 {
10317         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10318         void *hdr = ((void **)skb->cb)[1];
10319         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10320         struct nlattr *data = ((void **)skb->cb)[2];
10321         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10322
10323         /* clear CB data for netlink core to own from now on */
10324         memset(skb->cb, 0, sizeof(skb->cb));
10325
10326         nla_nest_end(skb, data);
10327         genlmsg_end(skb, hdr);
10328
10329         if (nlhdr->nlmsg_pid) {
10330                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10331                                 nlhdr->nlmsg_pid);
10332         } else {
10333                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10334                         mcgrp = NL80211_MCGRP_VENDOR;
10335
10336                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10337                                         skb, 0, mcgrp, gfp);
10338         }
10339 }
10340 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10341
10342 #ifdef CONFIG_NL80211_TESTMODE
10343 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10344 {
10345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10346         struct wireless_dev *wdev =
10347                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10348         int err;
10349
10350         if (!rdev->ops->testmode_cmd)
10351                 return -EOPNOTSUPP;
10352
10353         if (IS_ERR(wdev)) {
10354                 err = PTR_ERR(wdev);
10355                 if (err != -EINVAL)
10356                         return err;
10357                 wdev = NULL;
10358         } else if (wdev->wiphy != &rdev->wiphy) {
10359                 return -EINVAL;
10360         }
10361
10362         if (!info->attrs[NL80211_ATTR_TESTDATA])
10363                 return -EINVAL;
10364
10365         rdev->cur_cmd_info = info;
10366         err = rdev_testmode_cmd(rdev, wdev,
10367                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10368                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10369         rdev->cur_cmd_info = NULL;
10370
10371         return err;
10372 }
10373
10374 static int nl80211_testmode_dump(struct sk_buff *skb,
10375                                  struct netlink_callback *cb)
10376 {
10377         struct cfg80211_registered_device *rdev;
10378         struct nlattr **attrbuf = NULL;
10379         int err;
10380         long phy_idx;
10381         void *data = NULL;
10382         int data_len = 0;
10383
10384         rtnl_lock();
10385
10386         if (cb->args[0]) {
10387                 /*
10388                  * 0 is a valid index, but not valid for args[0],
10389                  * so we need to offset by 1.
10390                  */
10391                 phy_idx = cb->args[0] - 1;
10392
10393                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10394                 if (!rdev) {
10395                         err = -ENOENT;
10396                         goto out_err;
10397                 }
10398         } else {
10399                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10400                                   GFP_KERNEL);
10401                 if (!attrbuf) {
10402                         err = -ENOMEM;
10403                         goto out_err;
10404                 }
10405
10406                 err = nlmsg_parse_deprecated(cb->nlh,
10407                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10408                                              attrbuf, nl80211_fam.maxattr,
10409                                              nl80211_policy, NULL);
10410                 if (err)
10411                         goto out_err;
10412
10413                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10414                 if (IS_ERR(rdev)) {
10415                         err = PTR_ERR(rdev);
10416                         goto out_err;
10417                 }
10418                 phy_idx = rdev->wiphy_idx;
10419
10420                 if (attrbuf[NL80211_ATTR_TESTDATA])
10421                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10422         }
10423
10424         if (cb->args[1]) {
10425                 data = nla_data((void *)cb->args[1]);
10426                 data_len = nla_len((void *)cb->args[1]);
10427         }
10428
10429         if (!rdev->ops->testmode_dump) {
10430                 err = -EOPNOTSUPP;
10431                 goto out_err;
10432         }
10433
10434         while (1) {
10435                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10436                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10437                                            NL80211_CMD_TESTMODE);
10438                 struct nlattr *tmdata;
10439
10440                 if (!hdr)
10441                         break;
10442
10443                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10444                         genlmsg_cancel(skb, hdr);
10445                         break;
10446                 }
10447
10448                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10449                 if (!tmdata) {
10450                         genlmsg_cancel(skb, hdr);
10451                         break;
10452                 }
10453                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10454                 nla_nest_end(skb, tmdata);
10455
10456                 if (err == -ENOBUFS || err == -ENOENT) {
10457                         genlmsg_cancel(skb, hdr);
10458                         break;
10459                 } else if (err) {
10460                         genlmsg_cancel(skb, hdr);
10461                         goto out_err;
10462                 }
10463
10464                 genlmsg_end(skb, hdr);
10465         }
10466
10467         err = skb->len;
10468         /* see above */
10469         cb->args[0] = phy_idx + 1;
10470  out_err:
10471         kfree(attrbuf);
10472         rtnl_unlock();
10473         return err;
10474 }
10475 #endif
10476
10477 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10478 {
10479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10480         struct net_device *dev = info->user_ptr[1];
10481         struct cfg80211_connect_params connect;
10482         struct wiphy *wiphy;
10483         struct cfg80211_cached_keys *connkeys = NULL;
10484         u32 freq = 0;
10485         int err;
10486
10487         memset(&connect, 0, sizeof(connect));
10488
10489         if (!info->attrs[NL80211_ATTR_SSID] ||
10490             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10491                 return -EINVAL;
10492
10493         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10494                 connect.auth_type =
10495                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10496                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10497                                              NL80211_CMD_CONNECT))
10498                         return -EINVAL;
10499         } else
10500                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10501
10502         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10503
10504         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10505             !wiphy_ext_feature_isset(&rdev->wiphy,
10506                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10507                 return -EINVAL;
10508         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10509
10510         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10511                                       NL80211_MAX_NR_CIPHER_SUITES);
10512         if (err)
10513                 return err;
10514
10515         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10516             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10517                 return -EOPNOTSUPP;
10518
10519         wiphy = &rdev->wiphy;
10520
10521         connect.bg_scan_period = -1;
10522         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10523                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10524                 connect.bg_scan_period =
10525                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10526         }
10527
10528         if (info->attrs[NL80211_ATTR_MAC])
10529                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10530         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10531                 connect.bssid_hint =
10532                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10533         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10534         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10535
10536         if (info->attrs[NL80211_ATTR_IE]) {
10537                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10538                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10539         }
10540
10541         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10542                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10543                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10544                     !wiphy_ext_feature_isset(&rdev->wiphy,
10545                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10546                         return -EOPNOTSUPP;
10547         } else {
10548                 connect.mfp = NL80211_MFP_NO;
10549         }
10550
10551         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10552                 connect.prev_bssid =
10553                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10554
10555         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10556                 freq = MHZ_TO_KHZ(nla_get_u32(
10557                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10558         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10559                 freq +=
10560                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10561
10562         if (freq) {
10563                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10564                 if (!connect.channel)
10565                         return -EINVAL;
10566         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10567                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10568                 freq = MHZ_TO_KHZ(freq);
10569                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10570                 if (!connect.channel_hint)
10571                         return -EINVAL;
10572         }
10573
10574         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10575                 connect.edmg.channels =
10576                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10577
10578                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10579                         connect.edmg.bw_config =
10580                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10581         }
10582
10583         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10584                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10585                 if (IS_ERR(connkeys))
10586                         return PTR_ERR(connkeys);
10587         }
10588
10589         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10590                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10591
10592         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10593                 memcpy(&connect.ht_capa_mask,
10594                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10595                        sizeof(connect.ht_capa_mask));
10596
10597         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10598                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10599                         kfree_sensitive(connkeys);
10600                         return -EINVAL;
10601                 }
10602                 memcpy(&connect.ht_capa,
10603                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10604                        sizeof(connect.ht_capa));
10605         }
10606
10607         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10608                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10609
10610         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10611                 memcpy(&connect.vht_capa_mask,
10612                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10613                        sizeof(connect.vht_capa_mask));
10614
10615         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10616                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10617                         kfree_sensitive(connkeys);
10618                         return -EINVAL;
10619                 }
10620                 memcpy(&connect.vht_capa,
10621                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10622                        sizeof(connect.vht_capa));
10623         }
10624
10625         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10626                 if (!((rdev->wiphy.features &
10627                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10628                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10629                     !wiphy_ext_feature_isset(&rdev->wiphy,
10630                                              NL80211_EXT_FEATURE_RRM)) {
10631                         kfree_sensitive(connkeys);
10632                         return -EINVAL;
10633                 }
10634                 connect.flags |= ASSOC_REQ_USE_RRM;
10635         }
10636
10637         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10638         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10639                 kfree_sensitive(connkeys);
10640                 return -EOPNOTSUPP;
10641         }
10642
10643         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10644                 /* bss selection makes no sense if bssid is set */
10645                 if (connect.bssid) {
10646                         kfree_sensitive(connkeys);
10647                         return -EINVAL;
10648                 }
10649
10650                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10651                                        wiphy, &connect.bss_select);
10652                 if (err) {
10653                         kfree_sensitive(connkeys);
10654                         return err;
10655                 }
10656         }
10657
10658         if (wiphy_ext_feature_isset(&rdev->wiphy,
10659                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10660             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10661             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10662             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10663             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10664                 connect.fils_erp_username =
10665                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10666                 connect.fils_erp_username_len =
10667                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10668                 connect.fils_erp_realm =
10669                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10670                 connect.fils_erp_realm_len =
10671                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10672                 connect.fils_erp_next_seq_num =
10673                         nla_get_u16(
10674                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10675                 connect.fils_erp_rrk =
10676                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10677                 connect.fils_erp_rrk_len =
10678                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10679         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10680                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10681                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10682                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10683                 kfree_sensitive(connkeys);
10684                 return -EINVAL;
10685         }
10686
10687         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10688                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10689                         kfree_sensitive(connkeys);
10690                         GENL_SET_ERR_MSG(info,
10691                                          "external auth requires connection ownership");
10692                         return -EINVAL;
10693                 }
10694                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10695         }
10696
10697         wdev_lock(dev->ieee80211_ptr);
10698
10699         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10700                                connect.prev_bssid);
10701         if (err)
10702                 kfree_sensitive(connkeys);
10703
10704         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10705                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10706                 if (connect.bssid)
10707                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10708                                connect.bssid, ETH_ALEN);
10709                 else
10710                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10711         }
10712
10713         wdev_unlock(dev->ieee80211_ptr);
10714
10715         return err;
10716 }
10717
10718 static int nl80211_update_connect_params(struct sk_buff *skb,
10719                                          struct genl_info *info)
10720 {
10721         struct cfg80211_connect_params connect = {};
10722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10723         struct net_device *dev = info->user_ptr[1];
10724         struct wireless_dev *wdev = dev->ieee80211_ptr;
10725         bool fils_sk_offload;
10726         u32 auth_type;
10727         u32 changed = 0;
10728         int ret;
10729
10730         if (!rdev->ops->update_connect_params)
10731                 return -EOPNOTSUPP;
10732
10733         if (info->attrs[NL80211_ATTR_IE]) {
10734                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10735                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10736                 changed |= UPDATE_ASSOC_IES;
10737         }
10738
10739         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10740                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10741
10742         /*
10743          * when driver supports fils-sk offload all attributes must be
10744          * provided. So the else covers "fils-sk-not-all" and
10745          * "no-fils-sk-any".
10746          */
10747         if (fils_sk_offload &&
10748             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10749             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10750             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10751             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10752                 connect.fils_erp_username =
10753                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10754                 connect.fils_erp_username_len =
10755                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10756                 connect.fils_erp_realm =
10757                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10758                 connect.fils_erp_realm_len =
10759                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10760                 connect.fils_erp_next_seq_num =
10761                         nla_get_u16(
10762                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10763                 connect.fils_erp_rrk =
10764                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10765                 connect.fils_erp_rrk_len =
10766                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10767                 changed |= UPDATE_FILS_ERP_INFO;
10768         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10769                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10770                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10771                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10772                 return -EINVAL;
10773         }
10774
10775         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10776                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10777                 if (!nl80211_valid_auth_type(rdev, auth_type,
10778                                              NL80211_CMD_CONNECT))
10779                         return -EINVAL;
10780
10781                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10782                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10783                         return -EINVAL;
10784
10785                 connect.auth_type = auth_type;
10786                 changed |= UPDATE_AUTH_TYPE;
10787         }
10788
10789         wdev_lock(dev->ieee80211_ptr);
10790         if (!wdev->current_bss)
10791                 ret = -ENOLINK;
10792         else
10793                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10794         wdev_unlock(dev->ieee80211_ptr);
10795
10796         return ret;
10797 }
10798
10799 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10800 {
10801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10802         struct net_device *dev = info->user_ptr[1];
10803         u16 reason;
10804         int ret;
10805
10806         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10807             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10808                 return -EPERM;
10809
10810         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10811                 reason = WLAN_REASON_DEAUTH_LEAVING;
10812         else
10813                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10814
10815         if (reason == 0)
10816                 return -EINVAL;
10817
10818         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10819             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10820                 return -EOPNOTSUPP;
10821
10822         wdev_lock(dev->ieee80211_ptr);
10823         ret = cfg80211_disconnect(rdev, dev, reason, true);
10824         wdev_unlock(dev->ieee80211_ptr);
10825         return ret;
10826 }
10827
10828 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10829 {
10830         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10831         struct net *net;
10832         int err;
10833
10834         if (info->attrs[NL80211_ATTR_PID]) {
10835                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10836
10837                 net = get_net_ns_by_pid(pid);
10838         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10839                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10840
10841                 net = get_net_ns_by_fd(fd);
10842         } else {
10843                 return -EINVAL;
10844         }
10845
10846         if (IS_ERR(net))
10847                 return PTR_ERR(net);
10848
10849         err = 0;
10850
10851         /* check if anything to do */
10852         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10853                 err = cfg80211_switch_netns(rdev, net);
10854
10855         put_net(net);
10856         return err;
10857 }
10858
10859 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10860 {
10861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10862         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10863                         struct cfg80211_pmksa *pmksa) = NULL;
10864         struct net_device *dev = info->user_ptr[1];
10865         struct cfg80211_pmksa pmksa;
10866
10867         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10868
10869         if (!info->attrs[NL80211_ATTR_PMKID])
10870                 return -EINVAL;
10871
10872         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10873
10874         if (info->attrs[NL80211_ATTR_MAC]) {
10875                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10876         } else if (info->attrs[NL80211_ATTR_SSID] &&
10877                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10878                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10879                     info->attrs[NL80211_ATTR_PMK])) {
10880                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10881                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10882                 pmksa.cache_id =
10883                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10884         } else {
10885                 return -EINVAL;
10886         }
10887         if (info->attrs[NL80211_ATTR_PMK]) {
10888                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10889                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10890         }
10891
10892         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10893                 pmksa.pmk_lifetime =
10894                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10895
10896         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10897                 pmksa.pmk_reauth_threshold =
10898                         nla_get_u8(
10899                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10900
10901         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10902             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10903             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10904               wiphy_ext_feature_isset(&rdev->wiphy,
10905                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10906                 return -EOPNOTSUPP;
10907
10908         switch (info->genlhdr->cmd) {
10909         case NL80211_CMD_SET_PMKSA:
10910                 rdev_ops = rdev->ops->set_pmksa;
10911                 break;
10912         case NL80211_CMD_DEL_PMKSA:
10913                 rdev_ops = rdev->ops->del_pmksa;
10914                 break;
10915         default:
10916                 WARN_ON(1);
10917                 break;
10918         }
10919
10920         if (!rdev_ops)
10921                 return -EOPNOTSUPP;
10922
10923         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10924 }
10925
10926 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10927 {
10928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10929         struct net_device *dev = info->user_ptr[1];
10930
10931         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10932             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10933                 return -EOPNOTSUPP;
10934
10935         if (!rdev->ops->flush_pmksa)
10936                 return -EOPNOTSUPP;
10937
10938         return rdev_flush_pmksa(rdev, dev);
10939 }
10940
10941 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10942 {
10943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10944         struct net_device *dev = info->user_ptr[1];
10945         u8 action_code, dialog_token;
10946         u32 peer_capability = 0;
10947         u16 status_code;
10948         u8 *peer;
10949         bool initiator;
10950
10951         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10952             !rdev->ops->tdls_mgmt)
10953                 return -EOPNOTSUPP;
10954
10955         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10956             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10957             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10958             !info->attrs[NL80211_ATTR_IE] ||
10959             !info->attrs[NL80211_ATTR_MAC])
10960                 return -EINVAL;
10961
10962         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10963         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10964         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10965         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10966         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10967         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10968                 peer_capability =
10969                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10970
10971         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10972                               dialog_token, status_code, peer_capability,
10973                               initiator,
10974                               nla_data(info->attrs[NL80211_ATTR_IE]),
10975                               nla_len(info->attrs[NL80211_ATTR_IE]));
10976 }
10977
10978 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10979 {
10980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10981         struct net_device *dev = info->user_ptr[1];
10982         enum nl80211_tdls_operation operation;
10983         u8 *peer;
10984
10985         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10986             !rdev->ops->tdls_oper)
10987                 return -EOPNOTSUPP;
10988
10989         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10990             !info->attrs[NL80211_ATTR_MAC])
10991                 return -EINVAL;
10992
10993         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10994         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10995
10996         return rdev_tdls_oper(rdev, dev, peer, operation);
10997 }
10998
10999 static int nl80211_remain_on_channel(struct sk_buff *skb,
11000                                      struct genl_info *info)
11001 {
11002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11003         struct wireless_dev *wdev = info->user_ptr[1];
11004         struct cfg80211_chan_def chandef;
11005         const struct cfg80211_chan_def *compat_chandef;
11006         struct sk_buff *msg;
11007         void *hdr;
11008         u64 cookie;
11009         u32 duration;
11010         int err;
11011
11012         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11013             !info->attrs[NL80211_ATTR_DURATION])
11014                 return -EINVAL;
11015
11016         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11017
11018         if (!rdev->ops->remain_on_channel ||
11019             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11020                 return -EOPNOTSUPP;
11021
11022         /*
11023          * We should be on that channel for at least a minimum amount of
11024          * time (10ms) but no longer than the driver supports.
11025          */
11026         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11027             duration > rdev->wiphy.max_remain_on_channel_duration)
11028                 return -EINVAL;
11029
11030         err = nl80211_parse_chandef(rdev, info, &chandef);
11031         if (err)
11032                 return err;
11033
11034         wdev_lock(wdev);
11035         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11036             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11037                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11038                                                              &chandef);
11039                 if (compat_chandef != &chandef) {
11040                         wdev_unlock(wdev);
11041                         return -EBUSY;
11042                 }
11043         }
11044         wdev_unlock(wdev);
11045
11046         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11047         if (!msg)
11048                 return -ENOMEM;
11049
11050         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11051                              NL80211_CMD_REMAIN_ON_CHANNEL);
11052         if (!hdr) {
11053                 err = -ENOBUFS;
11054                 goto free_msg;
11055         }
11056
11057         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11058                                      duration, &cookie);
11059
11060         if (err)
11061                 goto free_msg;
11062
11063         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11064                               NL80211_ATTR_PAD))
11065                 goto nla_put_failure;
11066
11067         genlmsg_end(msg, hdr);
11068
11069         return genlmsg_reply(msg, info);
11070
11071  nla_put_failure:
11072         err = -ENOBUFS;
11073  free_msg:
11074         nlmsg_free(msg);
11075         return err;
11076 }
11077
11078 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11079                                             struct genl_info *info)
11080 {
11081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11082         struct wireless_dev *wdev = info->user_ptr[1];
11083         u64 cookie;
11084
11085         if (!info->attrs[NL80211_ATTR_COOKIE])
11086                 return -EINVAL;
11087
11088         if (!rdev->ops->cancel_remain_on_channel)
11089                 return -EOPNOTSUPP;
11090
11091         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11092
11093         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11094 }
11095
11096 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11097                                        struct genl_info *info)
11098 {
11099         struct cfg80211_bitrate_mask mask;
11100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11101         struct net_device *dev = info->user_ptr[1];
11102         struct wireless_dev *wdev = dev->ieee80211_ptr;
11103         int err;
11104
11105         if (!rdev->ops->set_bitrate_mask)
11106                 return -EOPNOTSUPP;
11107
11108         wdev_lock(wdev);
11109         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11110                                             NL80211_ATTR_TX_RATES, &mask,
11111                                             dev);
11112         if (err)
11113                 goto out;
11114
11115         err = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11116 out:
11117         wdev_unlock(wdev);
11118         return err;
11119 }
11120
11121 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11122 {
11123         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11124         struct wireless_dev *wdev = info->user_ptr[1];
11125         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11126
11127         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11128                 return -EINVAL;
11129
11130         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11131                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11132
11133         switch (wdev->iftype) {
11134         case NL80211_IFTYPE_STATION:
11135         case NL80211_IFTYPE_ADHOC:
11136         case NL80211_IFTYPE_P2P_CLIENT:
11137         case NL80211_IFTYPE_AP:
11138         case NL80211_IFTYPE_AP_VLAN:
11139         case NL80211_IFTYPE_MESH_POINT:
11140         case NL80211_IFTYPE_P2P_GO:
11141         case NL80211_IFTYPE_P2P_DEVICE:
11142                 break;
11143         case NL80211_IFTYPE_NAN:
11144         default:
11145                 return -EOPNOTSUPP;
11146         }
11147
11148         /* not much point in registering if we can't reply */
11149         if (!rdev->ops->mgmt_tx)
11150                 return -EOPNOTSUPP;
11151
11152         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11153             !wiphy_ext_feature_isset(&rdev->wiphy,
11154                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11155                 GENL_SET_ERR_MSG(info,
11156                                  "multicast RX registrations are not supported");
11157                 return -EOPNOTSUPP;
11158         }
11159
11160         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11161                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11162                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11163                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11164                                            info->extack);
11165 }
11166
11167 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11168 {
11169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11170         struct wireless_dev *wdev = info->user_ptr[1];
11171         struct cfg80211_chan_def chandef;
11172         int err;
11173         void *hdr = NULL;
11174         u64 cookie;
11175         struct sk_buff *msg = NULL;
11176         struct cfg80211_mgmt_tx_params params = {
11177                 .dont_wait_for_ack =
11178                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11179         };
11180
11181         if (!info->attrs[NL80211_ATTR_FRAME])
11182                 return -EINVAL;
11183
11184         if (!rdev->ops->mgmt_tx)
11185                 return -EOPNOTSUPP;
11186
11187         switch (wdev->iftype) {
11188         case NL80211_IFTYPE_P2P_DEVICE:
11189                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11190                         return -EINVAL;
11191         case NL80211_IFTYPE_STATION:
11192         case NL80211_IFTYPE_ADHOC:
11193         case NL80211_IFTYPE_P2P_CLIENT:
11194         case NL80211_IFTYPE_AP:
11195         case NL80211_IFTYPE_AP_VLAN:
11196         case NL80211_IFTYPE_MESH_POINT:
11197         case NL80211_IFTYPE_P2P_GO:
11198                 break;
11199         case NL80211_IFTYPE_NAN:
11200         default:
11201                 return -EOPNOTSUPP;
11202         }
11203
11204         if (info->attrs[NL80211_ATTR_DURATION]) {
11205                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11206                         return -EINVAL;
11207                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11208
11209                 /*
11210                  * We should wait on the channel for at least a minimum amount
11211                  * of time (10ms) but no longer than the driver supports.
11212                  */
11213                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11214                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11215                         return -EINVAL;
11216         }
11217
11218         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11219
11220         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11221                 return -EINVAL;
11222
11223         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11224
11225         /* get the channel if any has been specified, otherwise pass NULL to
11226          * the driver. The latter will use the current one
11227          */
11228         chandef.chan = NULL;
11229         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11230                 err = nl80211_parse_chandef(rdev, info, &chandef);
11231                 if (err)
11232                         return err;
11233         }
11234
11235         if (!chandef.chan && params.offchan)
11236                 return -EINVAL;
11237
11238         wdev_lock(wdev);
11239         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11240                 wdev_unlock(wdev);
11241                 return -EBUSY;
11242         }
11243         wdev_unlock(wdev);
11244
11245         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11246         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11247
11248         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11249                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11250                 int i;
11251
11252                 if (len % sizeof(u16))
11253                         return -EINVAL;
11254
11255                 params.n_csa_offsets = len / sizeof(u16);
11256                 params.csa_offsets =
11257                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11258
11259                 /* check that all the offsets fit the frame */
11260                 for (i = 0; i < params.n_csa_offsets; i++) {
11261                         if (params.csa_offsets[i] >= params.len)
11262                                 return -EINVAL;
11263                 }
11264         }
11265
11266         if (!params.dont_wait_for_ack) {
11267                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11268                 if (!msg)
11269                         return -ENOMEM;
11270
11271                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11272                                      NL80211_CMD_FRAME);
11273                 if (!hdr) {
11274                         err = -ENOBUFS;
11275                         goto free_msg;
11276                 }
11277         }
11278
11279         params.chan = chandef.chan;
11280         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11281         if (err)
11282                 goto free_msg;
11283
11284         if (msg) {
11285                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11286                                       NL80211_ATTR_PAD))
11287                         goto nla_put_failure;
11288
11289                 genlmsg_end(msg, hdr);
11290                 return genlmsg_reply(msg, info);
11291         }
11292
11293         return 0;
11294
11295  nla_put_failure:
11296         err = -ENOBUFS;
11297  free_msg:
11298         nlmsg_free(msg);
11299         return err;
11300 }
11301
11302 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11303 {
11304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11305         struct wireless_dev *wdev = info->user_ptr[1];
11306         u64 cookie;
11307
11308         if (!info->attrs[NL80211_ATTR_COOKIE])
11309                 return -EINVAL;
11310
11311         if (!rdev->ops->mgmt_tx_cancel_wait)
11312                 return -EOPNOTSUPP;
11313
11314         switch (wdev->iftype) {
11315         case NL80211_IFTYPE_STATION:
11316         case NL80211_IFTYPE_ADHOC:
11317         case NL80211_IFTYPE_P2P_CLIENT:
11318         case NL80211_IFTYPE_AP:
11319         case NL80211_IFTYPE_AP_VLAN:
11320         case NL80211_IFTYPE_P2P_GO:
11321         case NL80211_IFTYPE_P2P_DEVICE:
11322                 break;
11323         case NL80211_IFTYPE_NAN:
11324         default:
11325                 return -EOPNOTSUPP;
11326         }
11327
11328         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11329
11330         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11331 }
11332
11333 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11334 {
11335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11336         struct wireless_dev *wdev;
11337         struct net_device *dev = info->user_ptr[1];
11338         u8 ps_state;
11339         bool state;
11340         int err;
11341
11342         if (!info->attrs[NL80211_ATTR_PS_STATE])
11343                 return -EINVAL;
11344
11345         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11346
11347         wdev = dev->ieee80211_ptr;
11348
11349         if (!rdev->ops->set_power_mgmt)
11350                 return -EOPNOTSUPP;
11351
11352         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11353
11354         if (state == wdev->ps)
11355                 return 0;
11356
11357         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11358         if (!err)
11359                 wdev->ps = state;
11360         return err;
11361 }
11362
11363 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11364 {
11365         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11366         enum nl80211_ps_state ps_state;
11367         struct wireless_dev *wdev;
11368         struct net_device *dev = info->user_ptr[1];
11369         struct sk_buff *msg;
11370         void *hdr;
11371         int err;
11372
11373         wdev = dev->ieee80211_ptr;
11374
11375         if (!rdev->ops->set_power_mgmt)
11376                 return -EOPNOTSUPP;
11377
11378         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11379         if (!msg)
11380                 return -ENOMEM;
11381
11382         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11383                              NL80211_CMD_GET_POWER_SAVE);
11384         if (!hdr) {
11385                 err = -ENOBUFS;
11386                 goto free_msg;
11387         }
11388
11389         if (wdev->ps)
11390                 ps_state = NL80211_PS_ENABLED;
11391         else
11392                 ps_state = NL80211_PS_DISABLED;
11393
11394         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11395                 goto nla_put_failure;
11396
11397         genlmsg_end(msg, hdr);
11398         return genlmsg_reply(msg, info);
11399
11400  nla_put_failure:
11401         err = -ENOBUFS;
11402  free_msg:
11403         nlmsg_free(msg);
11404         return err;
11405 }
11406
11407 static const struct nla_policy
11408 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11409         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11410         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11411         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11412         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11413         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11414         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11415         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11416 };
11417
11418 static int nl80211_set_cqm_txe(struct genl_info *info,
11419                                u32 rate, u32 pkts, u32 intvl)
11420 {
11421         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11422         struct net_device *dev = info->user_ptr[1];
11423         struct wireless_dev *wdev = dev->ieee80211_ptr;
11424
11425         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11426                 return -EINVAL;
11427
11428         if (!rdev->ops->set_cqm_txe_config)
11429                 return -EOPNOTSUPP;
11430
11431         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11432             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11433                 return -EOPNOTSUPP;
11434
11435         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11436 }
11437
11438 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11439                                     struct net_device *dev)
11440 {
11441         struct wireless_dev *wdev = dev->ieee80211_ptr;
11442         s32 last, low, high;
11443         u32 hyst;
11444         int i, n, low_index;
11445         int err;
11446
11447         /* RSSI reporting disabled? */
11448         if (!wdev->cqm_config)
11449                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11450
11451         /*
11452          * Obtain current RSSI value if possible, if not and no RSSI threshold
11453          * event has been received yet, we should receive an event after a
11454          * connection is established and enough beacons received to calculate
11455          * the average.
11456          */
11457         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11458             rdev->ops->get_station) {
11459                 struct station_info sinfo = {};
11460                 u8 *mac_addr;
11461
11462                 mac_addr = wdev->current_bss->pub.bssid;
11463
11464                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11465                 if (err)
11466                         return err;
11467
11468                 cfg80211_sinfo_release_content(&sinfo);
11469                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11470                         wdev->cqm_config->last_rssi_event_value =
11471                                 (s8) sinfo.rx_beacon_signal_avg;
11472         }
11473
11474         last = wdev->cqm_config->last_rssi_event_value;
11475         hyst = wdev->cqm_config->rssi_hyst;
11476         n = wdev->cqm_config->n_rssi_thresholds;
11477
11478         for (i = 0; i < n; i++) {
11479                 i = array_index_nospec(i, n);
11480                 if (last < wdev->cqm_config->rssi_thresholds[i])
11481                         break;
11482         }
11483
11484         low_index = i - 1;
11485         if (low_index >= 0) {
11486                 low_index = array_index_nospec(low_index, n);
11487                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11488         } else {
11489                 low = S32_MIN;
11490         }
11491         if (i < n) {
11492                 i = array_index_nospec(i, n);
11493                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11494         } else {
11495                 high = S32_MAX;
11496         }
11497
11498         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11499 }
11500
11501 static int nl80211_set_cqm_rssi(struct genl_info *info,
11502                                 const s32 *thresholds, int n_thresholds,
11503                                 u32 hysteresis)
11504 {
11505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11506         struct net_device *dev = info->user_ptr[1];
11507         struct wireless_dev *wdev = dev->ieee80211_ptr;
11508         int i, err;
11509         s32 prev = S32_MIN;
11510
11511         /* Check all values negative and sorted */
11512         for (i = 0; i < n_thresholds; i++) {
11513                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11514                         return -EINVAL;
11515
11516                 prev = thresholds[i];
11517         }
11518
11519         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11520             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11521                 return -EOPNOTSUPP;
11522
11523         wdev_lock(wdev);
11524         cfg80211_cqm_config_free(wdev);
11525         wdev_unlock(wdev);
11526
11527         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11528                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11529                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11530
11531                 return rdev_set_cqm_rssi_config(rdev, dev,
11532                                                 thresholds[0], hysteresis);
11533         }
11534
11535         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11536                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11537                 return -EOPNOTSUPP;
11538
11539         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11540                 n_thresholds = 0;
11541
11542         wdev_lock(wdev);
11543         if (n_thresholds) {
11544                 struct cfg80211_cqm_config *cqm_config;
11545
11546                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11547                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11548                 if (!cqm_config) {
11549                         err = -ENOMEM;
11550                         goto unlock;
11551                 }
11552
11553                 cqm_config->rssi_hyst = hysteresis;
11554                 cqm_config->n_rssi_thresholds = n_thresholds;
11555                 memcpy(cqm_config->rssi_thresholds, thresholds,
11556                        n_thresholds * sizeof(s32));
11557
11558                 wdev->cqm_config = cqm_config;
11559         }
11560
11561         err = cfg80211_cqm_rssi_update(rdev, dev);
11562
11563 unlock:
11564         wdev_unlock(wdev);
11565
11566         return err;
11567 }
11568
11569 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11570 {
11571         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11572         struct nlattr *cqm;
11573         int err;
11574
11575         cqm = info->attrs[NL80211_ATTR_CQM];
11576         if (!cqm)
11577                 return -EINVAL;
11578
11579         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11580                                           nl80211_attr_cqm_policy,
11581                                           info->extack);
11582         if (err)
11583                 return err;
11584
11585         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11586             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11587                 const s32 *thresholds =
11588                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11589                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11590                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11591
11592                 if (len % 4)
11593                         return -EINVAL;
11594
11595                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11596                                             hysteresis);
11597         }
11598
11599         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11600             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11601             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11602                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11603                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11604                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11605
11606                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11607         }
11608
11609         return -EINVAL;
11610 }
11611
11612 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11613 {
11614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11615         struct net_device *dev = info->user_ptr[1];
11616         struct ocb_setup setup = {};
11617         int err;
11618
11619         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11620         if (err)
11621                 return err;
11622
11623         return cfg80211_join_ocb(rdev, dev, &setup);
11624 }
11625
11626 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11627 {
11628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11629         struct net_device *dev = info->user_ptr[1];
11630
11631         return cfg80211_leave_ocb(rdev, dev);
11632 }
11633
11634 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11635 {
11636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11637         struct net_device *dev = info->user_ptr[1];
11638         struct mesh_config cfg;
11639         struct mesh_setup setup;
11640         int err;
11641
11642         /* start with default */
11643         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11644         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11645
11646         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11647                 /* and parse parameters if given */
11648                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11649                 if (err)
11650                         return err;
11651         }
11652
11653         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11654             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11655                 return -EINVAL;
11656
11657         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11658         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11659
11660         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11661             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11662                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11663                         return -EINVAL;
11664
11665         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11666                 setup.beacon_interval =
11667                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11668
11669                 err = cfg80211_validate_beacon_int(rdev,
11670                                                    NL80211_IFTYPE_MESH_POINT,
11671                                                    setup.beacon_interval);
11672                 if (err)
11673                         return err;
11674         }
11675
11676         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11677                 setup.dtim_period =
11678                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11679                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11680                         return -EINVAL;
11681         }
11682
11683         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11684                 /* parse additional setup parameters if given */
11685                 err = nl80211_parse_mesh_setup(info, &setup);
11686                 if (err)
11687                         return err;
11688         }
11689
11690         if (setup.user_mpm)
11691                 cfg.auto_open_plinks = false;
11692
11693         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11694                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11695                 if (err)
11696                         return err;
11697         } else {
11698                 /* __cfg80211_join_mesh() will sort it out */
11699                 setup.chandef.chan = NULL;
11700         }
11701
11702         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11703                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11704                 int n_rates =
11705                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11706                 struct ieee80211_supported_band *sband;
11707
11708                 if (!setup.chandef.chan)
11709                         return -EINVAL;
11710
11711                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11712
11713                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11714                                              &setup.basic_rates);
11715                 if (err)
11716                         return err;
11717         }
11718
11719         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11720                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11721                                                     NL80211_ATTR_TX_RATES,
11722                                                     &setup.beacon_rate,
11723                                                     dev);
11724                 if (err)
11725                         return err;
11726
11727                 if (!setup.chandef.chan)
11728                         return -EINVAL;
11729
11730                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11731                                               &setup.beacon_rate);
11732                 if (err)
11733                         return err;
11734         }
11735
11736         setup.userspace_handles_dfs =
11737                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11738
11739         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11740                 int r = validate_pae_over_nl80211(rdev, info);
11741
11742                 if (r < 0)
11743                         return r;
11744
11745                 setup.control_port_over_nl80211 = true;
11746         }
11747
11748         wdev_lock(dev->ieee80211_ptr);
11749         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11750         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11751                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11752         wdev_unlock(dev->ieee80211_ptr);
11753
11754         return err;
11755 }
11756
11757 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11758 {
11759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11760         struct net_device *dev = info->user_ptr[1];
11761
11762         return cfg80211_leave_mesh(rdev, dev);
11763 }
11764
11765 #ifdef CONFIG_PM
11766 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11767                                         struct cfg80211_registered_device *rdev)
11768 {
11769         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11770         struct nlattr *nl_pats, *nl_pat;
11771         int i, pat_len;
11772
11773         if (!wowlan->n_patterns)
11774                 return 0;
11775
11776         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11777         if (!nl_pats)
11778                 return -ENOBUFS;
11779
11780         for (i = 0; i < wowlan->n_patterns; i++) {
11781                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11782                 if (!nl_pat)
11783                         return -ENOBUFS;
11784                 pat_len = wowlan->patterns[i].pattern_len;
11785                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11786                             wowlan->patterns[i].mask) ||
11787                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11788                             wowlan->patterns[i].pattern) ||
11789                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11790                                 wowlan->patterns[i].pkt_offset))
11791                         return -ENOBUFS;
11792                 nla_nest_end(msg, nl_pat);
11793         }
11794         nla_nest_end(msg, nl_pats);
11795
11796         return 0;
11797 }
11798
11799 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11800                                    struct cfg80211_wowlan_tcp *tcp)
11801 {
11802         struct nlattr *nl_tcp;
11803
11804         if (!tcp)
11805                 return 0;
11806
11807         nl_tcp = nla_nest_start_noflag(msg,
11808                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11809         if (!nl_tcp)
11810                 return -ENOBUFS;
11811
11812         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11813             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11814             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11815             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11816             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11817             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11818                     tcp->payload_len, tcp->payload) ||
11819             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11820                         tcp->data_interval) ||
11821             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11822                     tcp->wake_len, tcp->wake_data) ||
11823             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11824                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11825                 return -ENOBUFS;
11826
11827         if (tcp->payload_seq.len &&
11828             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11829                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11830                 return -ENOBUFS;
11831
11832         if (tcp->payload_tok.len &&
11833             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11834                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11835                     &tcp->payload_tok))
11836                 return -ENOBUFS;
11837
11838         nla_nest_end(msg, nl_tcp);
11839
11840         return 0;
11841 }
11842
11843 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11844                                   struct cfg80211_sched_scan_request *req)
11845 {
11846         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11847         int i;
11848
11849         if (!req)
11850                 return 0;
11851
11852         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11853         if (!nd)
11854                 return -ENOBUFS;
11855
11856         if (req->n_scan_plans == 1 &&
11857             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11858                         req->scan_plans[0].interval * 1000))
11859                 return -ENOBUFS;
11860
11861         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11862                 return -ENOBUFS;
11863
11864         if (req->relative_rssi_set) {
11865                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11866
11867                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11868                                req->relative_rssi))
11869                         return -ENOBUFS;
11870
11871                 rssi_adjust.band = req->rssi_adjust.band;
11872                 rssi_adjust.delta = req->rssi_adjust.delta;
11873                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11874                             sizeof(rssi_adjust), &rssi_adjust))
11875                         return -ENOBUFS;
11876         }
11877
11878         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11879         if (!freqs)
11880                 return -ENOBUFS;
11881
11882         for (i = 0; i < req->n_channels; i++) {
11883                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11884                         return -ENOBUFS;
11885         }
11886
11887         nla_nest_end(msg, freqs);
11888
11889         if (req->n_match_sets) {
11890                 matches = nla_nest_start_noflag(msg,
11891                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11892                 if (!matches)
11893                         return -ENOBUFS;
11894
11895                 for (i = 0; i < req->n_match_sets; i++) {
11896                         match = nla_nest_start_noflag(msg, i);
11897                         if (!match)
11898                                 return -ENOBUFS;
11899
11900                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11901                                     req->match_sets[i].ssid.ssid_len,
11902                                     req->match_sets[i].ssid.ssid))
11903                                 return -ENOBUFS;
11904                         nla_nest_end(msg, match);
11905                 }
11906                 nla_nest_end(msg, matches);
11907         }
11908
11909         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11910         if (!scan_plans)
11911                 return -ENOBUFS;
11912
11913         for (i = 0; i < req->n_scan_plans; i++) {
11914                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11915                 if (!scan_plan)
11916                         return -ENOBUFS;
11917
11918                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11919                                 req->scan_plans[i].interval) ||
11920                     (req->scan_plans[i].iterations &&
11921                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11922                                  req->scan_plans[i].iterations)))
11923                         return -ENOBUFS;
11924                 nla_nest_end(msg, scan_plan);
11925         }
11926         nla_nest_end(msg, scan_plans);
11927
11928         nla_nest_end(msg, nd);
11929
11930         return 0;
11931 }
11932
11933 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11934 {
11935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11936         struct sk_buff *msg;
11937         void *hdr;
11938         u32 size = NLMSG_DEFAULT_SIZE;
11939
11940         if (!rdev->wiphy.wowlan)
11941                 return -EOPNOTSUPP;
11942
11943         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11944                 /* adjust size to have room for all the data */
11945                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11946                         rdev->wiphy.wowlan_config->tcp->payload_len +
11947                         rdev->wiphy.wowlan_config->tcp->wake_len +
11948                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11949         }
11950
11951         msg = nlmsg_new(size, GFP_KERNEL);
11952         if (!msg)
11953                 return -ENOMEM;
11954
11955         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11956                              NL80211_CMD_GET_WOWLAN);
11957         if (!hdr)
11958                 goto nla_put_failure;
11959
11960         if (rdev->wiphy.wowlan_config) {
11961                 struct nlattr *nl_wowlan;
11962
11963                 nl_wowlan = nla_nest_start_noflag(msg,
11964                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11965                 if (!nl_wowlan)
11966                         goto nla_put_failure;
11967
11968                 if ((rdev->wiphy.wowlan_config->any &&
11969                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11970                     (rdev->wiphy.wowlan_config->disconnect &&
11971                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11972                     (rdev->wiphy.wowlan_config->magic_pkt &&
11973                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11974                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11975                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11976                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11977                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11978                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11979                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11980                     (rdev->wiphy.wowlan_config->rfkill_release &&
11981                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11982                         goto nla_put_failure;
11983
11984                 if (nl80211_send_wowlan_patterns(msg, rdev))
11985                         goto nla_put_failure;
11986
11987                 if (nl80211_send_wowlan_tcp(msg,
11988                                             rdev->wiphy.wowlan_config->tcp))
11989                         goto nla_put_failure;
11990
11991                 if (nl80211_send_wowlan_nd(
11992                             msg,
11993                             rdev->wiphy.wowlan_config->nd_config))
11994                         goto nla_put_failure;
11995
11996                 nla_nest_end(msg, nl_wowlan);
11997         }
11998
11999         genlmsg_end(msg, hdr);
12000         return genlmsg_reply(msg, info);
12001
12002 nla_put_failure:
12003         nlmsg_free(msg);
12004         return -ENOBUFS;
12005 }
12006
12007 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12008                                     struct nlattr *attr,
12009                                     struct cfg80211_wowlan *trig)
12010 {
12011         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12012         struct cfg80211_wowlan_tcp *cfg;
12013         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12014         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12015         u32 size;
12016         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12017         int err, port;
12018
12019         if (!rdev->wiphy.wowlan->tcp)
12020                 return -EINVAL;
12021
12022         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12023                                           nl80211_wowlan_tcp_policy, NULL);
12024         if (err)
12025                 return err;
12026
12027         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12028             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12029             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12030             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12031             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12032             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12033             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12034             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12035                 return -EINVAL;
12036
12037         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12038         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12039                 return -EINVAL;
12040
12041         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12042                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12043             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12044                 return -EINVAL;
12045
12046         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12047         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12048                 return -EINVAL;
12049
12050         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12051         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12052                 return -EINVAL;
12053
12054         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12055                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12056
12057                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12058                 tokens_size = tokln - sizeof(*tok);
12059
12060                 if (!tok->len || tokens_size % tok->len)
12061                         return -EINVAL;
12062                 if (!rdev->wiphy.wowlan->tcp->tok)
12063                         return -EINVAL;
12064                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12065                         return -EINVAL;
12066                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12067                         return -EINVAL;
12068                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12069                         return -EINVAL;
12070                 if (tok->offset + tok->len > data_size)
12071                         return -EINVAL;
12072         }
12073
12074         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12075                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12076                 if (!rdev->wiphy.wowlan->tcp->seq)
12077                         return -EINVAL;
12078                 if (seq->len == 0 || seq->len > 4)
12079                         return -EINVAL;
12080                 if (seq->len + seq->offset > data_size)
12081                         return -EINVAL;
12082         }
12083
12084         size = sizeof(*cfg);
12085         size += data_size;
12086         size += wake_size + wake_mask_size;
12087         size += tokens_size;
12088
12089         cfg = kzalloc(size, GFP_KERNEL);
12090         if (!cfg)
12091                 return -ENOMEM;
12092         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12093         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12094         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12095                ETH_ALEN);
12096         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12097                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12098         else
12099                 port = 0;
12100 #ifdef CONFIG_INET
12101         /* allocate a socket and port for it and use it */
12102         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12103                             IPPROTO_TCP, &cfg->sock, 1);
12104         if (err) {
12105                 kfree(cfg);
12106                 return err;
12107         }
12108         if (inet_csk_get_port(cfg->sock->sk, port)) {
12109                 sock_release(cfg->sock);
12110                 kfree(cfg);
12111                 return -EADDRINUSE;
12112         }
12113         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12114 #else
12115         if (!port) {
12116                 kfree(cfg);
12117                 return -EINVAL;
12118         }
12119         cfg->src_port = port;
12120 #endif
12121
12122         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12123         cfg->payload_len = data_size;
12124         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12125         memcpy((void *)cfg->payload,
12126                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12127                data_size);
12128         if (seq)
12129                 cfg->payload_seq = *seq;
12130         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12131         cfg->wake_len = wake_size;
12132         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12133         memcpy((void *)cfg->wake_data,
12134                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12135                wake_size);
12136         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12137                          data_size + wake_size;
12138         memcpy((void *)cfg->wake_mask,
12139                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12140                wake_mask_size);
12141         if (tok) {
12142                 cfg->tokens_size = tokens_size;
12143                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12144         }
12145
12146         trig->tcp = cfg;
12147
12148         return 0;
12149 }
12150
12151 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12152                                    const struct wiphy_wowlan_support *wowlan,
12153                                    struct nlattr *attr,
12154                                    struct cfg80211_wowlan *trig)
12155 {
12156         struct nlattr **tb;
12157         int err;
12158
12159         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12160         if (!tb)
12161                 return -ENOMEM;
12162
12163         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12164                 err = -EOPNOTSUPP;
12165                 goto out;
12166         }
12167
12168         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12169                                           nl80211_policy, NULL);
12170         if (err)
12171                 goto out;
12172
12173         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12174                                                    wowlan->max_nd_match_sets);
12175         err = PTR_ERR_OR_ZERO(trig->nd_config);
12176         if (err)
12177                 trig->nd_config = NULL;
12178
12179 out:
12180         kfree(tb);
12181         return err;
12182 }
12183
12184 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12185 {
12186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12187         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12188         struct cfg80211_wowlan new_triggers = {};
12189         struct cfg80211_wowlan *ntrig;
12190         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12191         int err, i;
12192         bool prev_enabled = rdev->wiphy.wowlan_config;
12193         bool regular = false;
12194
12195         if (!wowlan)
12196                 return -EOPNOTSUPP;
12197
12198         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12199                 cfg80211_rdev_free_wowlan(rdev);
12200                 rdev->wiphy.wowlan_config = NULL;
12201                 goto set_wakeup;
12202         }
12203
12204         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12205                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12206                                           nl80211_wowlan_policy, info->extack);
12207         if (err)
12208                 return err;
12209
12210         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12211                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12212                         return -EINVAL;
12213                 new_triggers.any = true;
12214         }
12215
12216         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12217                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12218                         return -EINVAL;
12219                 new_triggers.disconnect = true;
12220                 regular = true;
12221         }
12222
12223         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12224                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12225                         return -EINVAL;
12226                 new_triggers.magic_pkt = true;
12227                 regular = true;
12228         }
12229
12230         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12231                 return -EINVAL;
12232
12233         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12234                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12235                         return -EINVAL;
12236                 new_triggers.gtk_rekey_failure = true;
12237                 regular = true;
12238         }
12239
12240         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12241                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12242                         return -EINVAL;
12243                 new_triggers.eap_identity_req = true;
12244                 regular = true;
12245         }
12246
12247         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12248                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12249                         return -EINVAL;
12250                 new_triggers.four_way_handshake = true;
12251                 regular = true;
12252         }
12253
12254         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12255                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12256                         return -EINVAL;
12257                 new_triggers.rfkill_release = true;
12258                 regular = true;
12259         }
12260
12261         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12262                 struct nlattr *pat;
12263                 int n_patterns = 0;
12264                 int rem, pat_len, mask_len, pkt_offset;
12265                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12266
12267                 regular = true;
12268
12269                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12270                                     rem)
12271                         n_patterns++;
12272                 if (n_patterns > wowlan->n_patterns)
12273                         return -EINVAL;
12274
12275                 new_triggers.patterns = kcalloc(n_patterns,
12276                                                 sizeof(new_triggers.patterns[0]),
12277                                                 GFP_KERNEL);
12278                 if (!new_triggers.patterns)
12279                         return -ENOMEM;
12280
12281                 new_triggers.n_patterns = n_patterns;
12282                 i = 0;
12283
12284                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12285                                     rem) {
12286                         u8 *mask_pat;
12287
12288                         err = nla_parse_nested_deprecated(pat_tb,
12289                                                           MAX_NL80211_PKTPAT,
12290                                                           pat,
12291                                                           nl80211_packet_pattern_policy,
12292                                                           info->extack);
12293                         if (err)
12294                                 goto error;
12295
12296                         err = -EINVAL;
12297                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12298                             !pat_tb[NL80211_PKTPAT_PATTERN])
12299                                 goto error;
12300                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12301                         mask_len = DIV_ROUND_UP(pat_len, 8);
12302                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12303                                 goto error;
12304                         if (pat_len > wowlan->pattern_max_len ||
12305                             pat_len < wowlan->pattern_min_len)
12306                                 goto error;
12307
12308                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12309                                 pkt_offset = 0;
12310                         else
12311                                 pkt_offset = nla_get_u32(
12312                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12313                         if (pkt_offset > wowlan->max_pkt_offset)
12314                                 goto error;
12315                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12316
12317                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12318                         if (!mask_pat) {
12319                                 err = -ENOMEM;
12320                                 goto error;
12321                         }
12322                         new_triggers.patterns[i].mask = mask_pat;
12323                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12324                                mask_len);
12325                         mask_pat += mask_len;
12326                         new_triggers.patterns[i].pattern = mask_pat;
12327                         new_triggers.patterns[i].pattern_len = pat_len;
12328                         memcpy(mask_pat,
12329                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12330                                pat_len);
12331                         i++;
12332                 }
12333         }
12334
12335         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12336                 regular = true;
12337                 err = nl80211_parse_wowlan_tcp(
12338                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12339                         &new_triggers);
12340                 if (err)
12341                         goto error;
12342         }
12343
12344         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12345                 regular = true;
12346                 err = nl80211_parse_wowlan_nd(
12347                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12348                         &new_triggers);
12349                 if (err)
12350                         goto error;
12351         }
12352
12353         /* The 'any' trigger means the device continues operating more or less
12354          * as in its normal operation mode and wakes up the host on most of the
12355          * normal interrupts (like packet RX, ...)
12356          * It therefore makes little sense to combine with the more constrained
12357          * wakeup trigger modes.
12358          */
12359         if (new_triggers.any && regular) {
12360                 err = -EINVAL;
12361                 goto error;
12362         }
12363
12364         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12365         if (!ntrig) {
12366                 err = -ENOMEM;
12367                 goto error;
12368         }
12369         cfg80211_rdev_free_wowlan(rdev);
12370         rdev->wiphy.wowlan_config = ntrig;
12371
12372  set_wakeup:
12373         if (rdev->ops->set_wakeup &&
12374             prev_enabled != !!rdev->wiphy.wowlan_config)
12375                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12376
12377         return 0;
12378  error:
12379         for (i = 0; i < new_triggers.n_patterns; i++)
12380                 kfree(new_triggers.patterns[i].mask);
12381         kfree(new_triggers.patterns);
12382         if (new_triggers.tcp && new_triggers.tcp->sock)
12383                 sock_release(new_triggers.tcp->sock);
12384         kfree(new_triggers.tcp);
12385         kfree(new_triggers.nd_config);
12386         return err;
12387 }
12388 #endif
12389
12390 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12391                                        struct cfg80211_registered_device *rdev)
12392 {
12393         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12394         int i, j, pat_len;
12395         struct cfg80211_coalesce_rules *rule;
12396
12397         if (!rdev->coalesce->n_rules)
12398                 return 0;
12399
12400         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12401         if (!nl_rules)
12402                 return -ENOBUFS;
12403
12404         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12405                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12406                 if (!nl_rule)
12407                         return -ENOBUFS;
12408
12409                 rule = &rdev->coalesce->rules[i];
12410                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12411                                 rule->delay))
12412                         return -ENOBUFS;
12413
12414                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12415                                 rule->condition))
12416                         return -ENOBUFS;
12417
12418                 nl_pats = nla_nest_start_noflag(msg,
12419                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12420                 if (!nl_pats)
12421                         return -ENOBUFS;
12422
12423                 for (j = 0; j < rule->n_patterns; j++) {
12424                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12425                         if (!nl_pat)
12426                                 return -ENOBUFS;
12427                         pat_len = rule->patterns[j].pattern_len;
12428                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12429                                     DIV_ROUND_UP(pat_len, 8),
12430                                     rule->patterns[j].mask) ||
12431                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12432                                     rule->patterns[j].pattern) ||
12433                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12434                                         rule->patterns[j].pkt_offset))
12435                                 return -ENOBUFS;
12436                         nla_nest_end(msg, nl_pat);
12437                 }
12438                 nla_nest_end(msg, nl_pats);
12439                 nla_nest_end(msg, nl_rule);
12440         }
12441         nla_nest_end(msg, nl_rules);
12442
12443         return 0;
12444 }
12445
12446 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12447 {
12448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12449         struct sk_buff *msg;
12450         void *hdr;
12451
12452         if (!rdev->wiphy.coalesce)
12453                 return -EOPNOTSUPP;
12454
12455         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12456         if (!msg)
12457                 return -ENOMEM;
12458
12459         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12460                              NL80211_CMD_GET_COALESCE);
12461         if (!hdr)
12462                 goto nla_put_failure;
12463
12464         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12465                 goto nla_put_failure;
12466
12467         genlmsg_end(msg, hdr);
12468         return genlmsg_reply(msg, info);
12469
12470 nla_put_failure:
12471         nlmsg_free(msg);
12472         return -ENOBUFS;
12473 }
12474
12475 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12476 {
12477         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12478         int i, j;
12479         struct cfg80211_coalesce_rules *rule;
12480
12481         if (!coalesce)
12482                 return;
12483
12484         for (i = 0; i < coalesce->n_rules; i++) {
12485                 rule = &coalesce->rules[i];
12486                 for (j = 0; j < rule->n_patterns; j++)
12487                         kfree(rule->patterns[j].mask);
12488                 kfree(rule->patterns);
12489         }
12490         kfree(coalesce->rules);
12491         kfree(coalesce);
12492         rdev->coalesce = NULL;
12493 }
12494
12495 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12496                                        struct nlattr *rule,
12497                                        struct cfg80211_coalesce_rules *new_rule)
12498 {
12499         int err, i;
12500         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12501         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12502         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12503         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12504
12505         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12506                                           rule, nl80211_coalesce_policy, NULL);
12507         if (err)
12508                 return err;
12509
12510         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12511                 new_rule->delay =
12512                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12513         if (new_rule->delay > coalesce->max_delay)
12514                 return -EINVAL;
12515
12516         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12517                 new_rule->condition =
12518                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12519
12520         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12521                 return -EINVAL;
12522
12523         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12524                             rem)
12525                 n_patterns++;
12526         if (n_patterns > coalesce->n_patterns)
12527                 return -EINVAL;
12528
12529         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12530                                      GFP_KERNEL);
12531         if (!new_rule->patterns)
12532                 return -ENOMEM;
12533
12534         new_rule->n_patterns = n_patterns;
12535         i = 0;
12536
12537         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12538                             rem) {
12539                 u8 *mask_pat;
12540
12541                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12542                                                   pat,
12543                                                   nl80211_packet_pattern_policy,
12544                                                   NULL);
12545                 if (err)
12546                         return err;
12547
12548                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12549                     !pat_tb[NL80211_PKTPAT_PATTERN])
12550                         return -EINVAL;
12551                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12552                 mask_len = DIV_ROUND_UP(pat_len, 8);
12553                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12554                         return -EINVAL;
12555                 if (pat_len > coalesce->pattern_max_len ||
12556                     pat_len < coalesce->pattern_min_len)
12557                         return -EINVAL;
12558
12559                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12560                         pkt_offset = 0;
12561                 else
12562                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12563                 if (pkt_offset > coalesce->max_pkt_offset)
12564                         return -EINVAL;
12565                 new_rule->patterns[i].pkt_offset = pkt_offset;
12566
12567                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12568                 if (!mask_pat)
12569                         return -ENOMEM;
12570
12571                 new_rule->patterns[i].mask = mask_pat;
12572                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12573                        mask_len);
12574
12575                 mask_pat += mask_len;
12576                 new_rule->patterns[i].pattern = mask_pat;
12577                 new_rule->patterns[i].pattern_len = pat_len;
12578                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12579                        pat_len);
12580                 i++;
12581         }
12582
12583         return 0;
12584 }
12585
12586 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12587 {
12588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12589         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12590         struct cfg80211_coalesce new_coalesce = {};
12591         struct cfg80211_coalesce *n_coalesce;
12592         int err, rem_rule, n_rules = 0, i, j;
12593         struct nlattr *rule;
12594         struct cfg80211_coalesce_rules *tmp_rule;
12595
12596         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12597                 return -EOPNOTSUPP;
12598
12599         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12600                 cfg80211_rdev_free_coalesce(rdev);
12601                 rdev_set_coalesce(rdev, NULL);
12602                 return 0;
12603         }
12604
12605         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12606                             rem_rule)
12607                 n_rules++;
12608         if (n_rules > coalesce->n_rules)
12609                 return -EINVAL;
12610
12611         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12612                                      GFP_KERNEL);
12613         if (!new_coalesce.rules)
12614                 return -ENOMEM;
12615
12616         new_coalesce.n_rules = n_rules;
12617         i = 0;
12618
12619         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12620                             rem_rule) {
12621                 err = nl80211_parse_coalesce_rule(rdev, rule,
12622                                                   &new_coalesce.rules[i]);
12623                 if (err)
12624                         goto error;
12625
12626                 i++;
12627         }
12628
12629         err = rdev_set_coalesce(rdev, &new_coalesce);
12630         if (err)
12631                 goto error;
12632
12633         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12634         if (!n_coalesce) {
12635                 err = -ENOMEM;
12636                 goto error;
12637         }
12638         cfg80211_rdev_free_coalesce(rdev);
12639         rdev->coalesce = n_coalesce;
12640
12641         return 0;
12642 error:
12643         for (i = 0; i < new_coalesce.n_rules; i++) {
12644                 tmp_rule = &new_coalesce.rules[i];
12645                 if (!tmp_rule)
12646                         continue;
12647                 for (j = 0; j < tmp_rule->n_patterns; j++)
12648                         kfree(tmp_rule->patterns[j].mask);
12649                 kfree(tmp_rule->patterns);
12650         }
12651         kfree(new_coalesce.rules);
12652
12653         return err;
12654 }
12655
12656 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12657 {
12658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12659         struct net_device *dev = info->user_ptr[1];
12660         struct wireless_dev *wdev = dev->ieee80211_ptr;
12661         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12662         struct cfg80211_gtk_rekey_data rekey_data = {};
12663         int err;
12664
12665         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12666                 return -EINVAL;
12667
12668         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12669                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12670                                           nl80211_rekey_policy, info->extack);
12671         if (err)
12672                 return err;
12673
12674         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12675             !tb[NL80211_REKEY_DATA_KCK])
12676                 return -EINVAL;
12677         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12678             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12679               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12680                 return -ERANGE;
12681         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12682             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12683               nla_len(tb[NL80211_REKEY_DATA_KCK]) == NL80211_KCK_EXT_LEN))
12684                 return -ERANGE;
12685
12686         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12687         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12688         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12689         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12690         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12691         if (tb[NL80211_REKEY_DATA_AKM])
12692                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12693
12694         wdev_lock(wdev);
12695         if (!wdev->current_bss) {
12696                 err = -ENOTCONN;
12697                 goto out;
12698         }
12699
12700         if (!rdev->ops->set_rekey_data) {
12701                 err = -EOPNOTSUPP;
12702                 goto out;
12703         }
12704
12705         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12706  out:
12707         wdev_unlock(wdev);
12708         return err;
12709 }
12710
12711 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12712                                              struct genl_info *info)
12713 {
12714         struct net_device *dev = info->user_ptr[1];
12715         struct wireless_dev *wdev = dev->ieee80211_ptr;
12716
12717         if (wdev->iftype != NL80211_IFTYPE_AP &&
12718             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12719                 return -EINVAL;
12720
12721         if (wdev->ap_unexpected_nlportid)
12722                 return -EBUSY;
12723
12724         wdev->ap_unexpected_nlportid = info->snd_portid;
12725         return 0;
12726 }
12727
12728 static int nl80211_probe_client(struct sk_buff *skb,
12729                                 struct genl_info *info)
12730 {
12731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12732         struct net_device *dev = info->user_ptr[1];
12733         struct wireless_dev *wdev = dev->ieee80211_ptr;
12734         struct sk_buff *msg;
12735         void *hdr;
12736         const u8 *addr;
12737         u64 cookie;
12738         int err;
12739
12740         if (wdev->iftype != NL80211_IFTYPE_AP &&
12741             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12742                 return -EOPNOTSUPP;
12743
12744         if (!info->attrs[NL80211_ATTR_MAC])
12745                 return -EINVAL;
12746
12747         if (!rdev->ops->probe_client)
12748                 return -EOPNOTSUPP;
12749
12750         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12751         if (!msg)
12752                 return -ENOMEM;
12753
12754         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12755                              NL80211_CMD_PROBE_CLIENT);
12756         if (!hdr) {
12757                 err = -ENOBUFS;
12758                 goto free_msg;
12759         }
12760
12761         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12762
12763         err = rdev_probe_client(rdev, dev, addr, &cookie);
12764         if (err)
12765                 goto free_msg;
12766
12767         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12768                               NL80211_ATTR_PAD))
12769                 goto nla_put_failure;
12770
12771         genlmsg_end(msg, hdr);
12772
12773         return genlmsg_reply(msg, info);
12774
12775  nla_put_failure:
12776         err = -ENOBUFS;
12777  free_msg:
12778         nlmsg_free(msg);
12779         return err;
12780 }
12781
12782 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12783 {
12784         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12785         struct cfg80211_beacon_registration *reg, *nreg;
12786         int rv;
12787
12788         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12789                 return -EOPNOTSUPP;
12790
12791         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12792         if (!nreg)
12793                 return -ENOMEM;
12794
12795         /* First, check if already registered. */
12796         spin_lock_bh(&rdev->beacon_registrations_lock);
12797         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12798                 if (reg->nlportid == info->snd_portid) {
12799                         rv = -EALREADY;
12800                         goto out_err;
12801                 }
12802         }
12803         /* Add it to the list */
12804         nreg->nlportid = info->snd_portid;
12805         list_add(&nreg->list, &rdev->beacon_registrations);
12806
12807         spin_unlock_bh(&rdev->beacon_registrations_lock);
12808
12809         return 0;
12810 out_err:
12811         spin_unlock_bh(&rdev->beacon_registrations_lock);
12812         kfree(nreg);
12813         return rv;
12814 }
12815
12816 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12817 {
12818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12819         struct wireless_dev *wdev = info->user_ptr[1];
12820         int err;
12821
12822         if (!rdev->ops->start_p2p_device)
12823                 return -EOPNOTSUPP;
12824
12825         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12826                 return -EOPNOTSUPP;
12827
12828         if (wdev_running(wdev))
12829                 return 0;
12830
12831         if (rfkill_blocked(rdev->rfkill))
12832                 return -ERFKILL;
12833
12834         err = rdev_start_p2p_device(rdev, wdev);
12835         if (err)
12836                 return err;
12837
12838         wdev->is_running = true;
12839         rdev->opencount++;
12840
12841         return 0;
12842 }
12843
12844 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12845 {
12846         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12847         struct wireless_dev *wdev = info->user_ptr[1];
12848
12849         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12850                 return -EOPNOTSUPP;
12851
12852         if (!rdev->ops->stop_p2p_device)
12853                 return -EOPNOTSUPP;
12854
12855         cfg80211_stop_p2p_device(rdev, wdev);
12856
12857         return 0;
12858 }
12859
12860 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12861 {
12862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12863         struct wireless_dev *wdev = info->user_ptr[1];
12864         struct cfg80211_nan_conf conf = {};
12865         int err;
12866
12867         if (wdev->iftype != NL80211_IFTYPE_NAN)
12868                 return -EOPNOTSUPP;
12869
12870         if (wdev_running(wdev))
12871                 return -EEXIST;
12872
12873         if (rfkill_blocked(rdev->rfkill))
12874                 return -ERFKILL;
12875
12876         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12877                 return -EINVAL;
12878
12879         conf.master_pref =
12880                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12881
12882         if (info->attrs[NL80211_ATTR_BANDS]) {
12883                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12884
12885                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12886                         return -EOPNOTSUPP;
12887
12888                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12889                         return -EINVAL;
12890
12891                 conf.bands = bands;
12892         }
12893
12894         err = rdev_start_nan(rdev, wdev, &conf);
12895         if (err)
12896                 return err;
12897
12898         wdev->is_running = true;
12899         rdev->opencount++;
12900
12901         return 0;
12902 }
12903
12904 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12905 {
12906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12907         struct wireless_dev *wdev = info->user_ptr[1];
12908
12909         if (wdev->iftype != NL80211_IFTYPE_NAN)
12910                 return -EOPNOTSUPP;
12911
12912         cfg80211_stop_nan(rdev, wdev);
12913
12914         return 0;
12915 }
12916
12917 static int validate_nan_filter(struct nlattr *filter_attr)
12918 {
12919         struct nlattr *attr;
12920         int len = 0, n_entries = 0, rem;
12921
12922         nla_for_each_nested(attr, filter_attr, rem) {
12923                 len += nla_len(attr);
12924                 n_entries++;
12925         }
12926
12927         if (len >= U8_MAX)
12928                 return -EINVAL;
12929
12930         return n_entries;
12931 }
12932
12933 static int handle_nan_filter(struct nlattr *attr_filter,
12934                              struct cfg80211_nan_func *func,
12935                              bool tx)
12936 {
12937         struct nlattr *attr;
12938         int n_entries, rem, i;
12939         struct cfg80211_nan_func_filter *filter;
12940
12941         n_entries = validate_nan_filter(attr_filter);
12942         if (n_entries < 0)
12943                 return n_entries;
12944
12945         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12946
12947         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12948         if (!filter)
12949                 return -ENOMEM;
12950
12951         i = 0;
12952         nla_for_each_nested(attr, attr_filter, rem) {
12953                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12954                 if (!filter[i].filter)
12955                         goto err;
12956
12957                 filter[i].len = nla_len(attr);
12958                 i++;
12959         }
12960         if (tx) {
12961                 func->num_tx_filters = n_entries;
12962                 func->tx_filters = filter;
12963         } else {
12964                 func->num_rx_filters = n_entries;
12965                 func->rx_filters = filter;
12966         }
12967
12968         return 0;
12969
12970 err:
12971         i = 0;
12972         nla_for_each_nested(attr, attr_filter, rem) {
12973                 kfree(filter[i].filter);
12974                 i++;
12975         }
12976         kfree(filter);
12977         return -ENOMEM;
12978 }
12979
12980 static int nl80211_nan_add_func(struct sk_buff *skb,
12981                                 struct genl_info *info)
12982 {
12983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12984         struct wireless_dev *wdev = info->user_ptr[1];
12985         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12986         struct cfg80211_nan_func *func;
12987         struct sk_buff *msg = NULL;
12988         void *hdr = NULL;
12989         int err = 0;
12990
12991         if (wdev->iftype != NL80211_IFTYPE_NAN)
12992                 return -EOPNOTSUPP;
12993
12994         if (!wdev_running(wdev))
12995                 return -ENOTCONN;
12996
12997         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12998                 return -EINVAL;
12999
13000         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13001                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13002                                           nl80211_nan_func_policy,
13003                                           info->extack);
13004         if (err)
13005                 return err;
13006
13007         func = kzalloc(sizeof(*func), GFP_KERNEL);
13008         if (!func)
13009                 return -ENOMEM;
13010
13011         func->cookie = cfg80211_assign_cookie(rdev);
13012
13013         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13014                 err = -EINVAL;
13015                 goto out;
13016         }
13017
13018
13019         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13020
13021         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13022                 err = -EINVAL;
13023                 goto out;
13024         }
13025
13026         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13027                sizeof(func->service_id));
13028
13029         func->close_range =
13030                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13031
13032         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13033                 func->serv_spec_info_len =
13034                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13035                 func->serv_spec_info =
13036                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13037                                 func->serv_spec_info_len,
13038                                 GFP_KERNEL);
13039                 if (!func->serv_spec_info) {
13040                         err = -ENOMEM;
13041                         goto out;
13042                 }
13043         }
13044
13045         if (tb[NL80211_NAN_FUNC_TTL])
13046                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13047
13048         switch (func->type) {
13049         case NL80211_NAN_FUNC_PUBLISH:
13050                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13051                         err = -EINVAL;
13052                         goto out;
13053                 }
13054
13055                 func->publish_type =
13056                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13057                 func->publish_bcast =
13058                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13059
13060                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13061                         func->publish_bcast) {
13062                         err = -EINVAL;
13063                         goto out;
13064                 }
13065                 break;
13066         case NL80211_NAN_FUNC_SUBSCRIBE:
13067                 func->subscribe_active =
13068                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13069                 break;
13070         case NL80211_NAN_FUNC_FOLLOW_UP:
13071                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13072                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13073                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13074                         err = -EINVAL;
13075                         goto out;
13076                 }
13077
13078                 func->followup_id =
13079                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13080                 func->followup_reqid =
13081                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13082                 memcpy(func->followup_dest.addr,
13083                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13084                        sizeof(func->followup_dest.addr));
13085                 if (func->ttl) {
13086                         err = -EINVAL;
13087                         goto out;
13088                 }
13089                 break;
13090         default:
13091                 err = -EINVAL;
13092                 goto out;
13093         }
13094
13095         if (tb[NL80211_NAN_FUNC_SRF]) {
13096                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13097
13098                 err = nla_parse_nested_deprecated(srf_tb,
13099                                                   NL80211_NAN_SRF_ATTR_MAX,
13100                                                   tb[NL80211_NAN_FUNC_SRF],
13101                                                   nl80211_nan_srf_policy,
13102                                                   info->extack);
13103                 if (err)
13104                         goto out;
13105
13106                 func->srf_include =
13107                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13108
13109                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13110                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13111                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13112                                 err = -EINVAL;
13113                                 goto out;
13114                         }
13115
13116                         func->srf_bf_len =
13117                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13118                         func->srf_bf =
13119                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13120                                         func->srf_bf_len, GFP_KERNEL);
13121                         if (!func->srf_bf) {
13122                                 err = -ENOMEM;
13123                                 goto out;
13124                         }
13125
13126                         func->srf_bf_idx =
13127                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13128                 } else {
13129                         struct nlattr *attr, *mac_attr =
13130                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13131                         int n_entries, rem, i = 0;
13132
13133                         if (!mac_attr) {
13134                                 err = -EINVAL;
13135                                 goto out;
13136                         }
13137
13138                         n_entries = validate_acl_mac_addrs(mac_attr);
13139                         if (n_entries <= 0) {
13140                                 err = -EINVAL;
13141                                 goto out;
13142                         }
13143
13144                         func->srf_num_macs = n_entries;
13145                         func->srf_macs =
13146                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13147                                         GFP_KERNEL);
13148                         if (!func->srf_macs) {
13149                                 err = -ENOMEM;
13150                                 goto out;
13151                         }
13152
13153                         nla_for_each_nested(attr, mac_attr, rem)
13154                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13155                                        sizeof(*func->srf_macs));
13156                 }
13157         }
13158
13159         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13160                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13161                                         func, true);
13162                 if (err)
13163                         goto out;
13164         }
13165
13166         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13167                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13168                                         func, false);
13169                 if (err)
13170                         goto out;
13171         }
13172
13173         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13174         if (!msg) {
13175                 err = -ENOMEM;
13176                 goto out;
13177         }
13178
13179         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13180                              NL80211_CMD_ADD_NAN_FUNCTION);
13181         /* This can't really happen - we just allocated 4KB */
13182         if (WARN_ON(!hdr)) {
13183                 err = -ENOMEM;
13184                 goto out;
13185         }
13186
13187         err = rdev_add_nan_func(rdev, wdev, func);
13188 out:
13189         if (err < 0) {
13190                 cfg80211_free_nan_func(func);
13191                 nlmsg_free(msg);
13192                 return err;
13193         }
13194
13195         /* propagate the instance id and cookie to userspace  */
13196         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13197                               NL80211_ATTR_PAD))
13198                 goto nla_put_failure;
13199
13200         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13201         if (!func_attr)
13202                 goto nla_put_failure;
13203
13204         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13205                        func->instance_id))
13206                 goto nla_put_failure;
13207
13208         nla_nest_end(msg, func_attr);
13209
13210         genlmsg_end(msg, hdr);
13211         return genlmsg_reply(msg, info);
13212
13213 nla_put_failure:
13214         nlmsg_free(msg);
13215         return -ENOBUFS;
13216 }
13217
13218 static int nl80211_nan_del_func(struct sk_buff *skb,
13219                                struct genl_info *info)
13220 {
13221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13222         struct wireless_dev *wdev = info->user_ptr[1];
13223         u64 cookie;
13224
13225         if (wdev->iftype != NL80211_IFTYPE_NAN)
13226                 return -EOPNOTSUPP;
13227
13228         if (!wdev_running(wdev))
13229                 return -ENOTCONN;
13230
13231         if (!info->attrs[NL80211_ATTR_COOKIE])
13232                 return -EINVAL;
13233
13234         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13235
13236         rdev_del_nan_func(rdev, wdev, cookie);
13237
13238         return 0;
13239 }
13240
13241 static int nl80211_nan_change_config(struct sk_buff *skb,
13242                                      struct genl_info *info)
13243 {
13244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13245         struct wireless_dev *wdev = info->user_ptr[1];
13246         struct cfg80211_nan_conf conf = {};
13247         u32 changed = 0;
13248
13249         if (wdev->iftype != NL80211_IFTYPE_NAN)
13250                 return -EOPNOTSUPP;
13251
13252         if (!wdev_running(wdev))
13253                 return -ENOTCONN;
13254
13255         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13256                 conf.master_pref =
13257                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13258                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13259                         return -EINVAL;
13260
13261                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13262         }
13263
13264         if (info->attrs[NL80211_ATTR_BANDS]) {
13265                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13266
13267                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13268                         return -EOPNOTSUPP;
13269
13270                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13271                         return -EINVAL;
13272
13273                 conf.bands = bands;
13274                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13275         }
13276
13277         if (!changed)
13278                 return -EINVAL;
13279
13280         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13281 }
13282
13283 void cfg80211_nan_match(struct wireless_dev *wdev,
13284                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13285 {
13286         struct wiphy *wiphy = wdev->wiphy;
13287         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13288         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13289         struct sk_buff *msg;
13290         void *hdr;
13291
13292         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13293                 return;
13294
13295         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13296         if (!msg)
13297                 return;
13298
13299         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13300         if (!hdr) {
13301                 nlmsg_free(msg);
13302                 return;
13303         }
13304
13305         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13306             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13307                                          wdev->netdev->ifindex)) ||
13308             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13309                               NL80211_ATTR_PAD))
13310                 goto nla_put_failure;
13311
13312         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13313                               NL80211_ATTR_PAD) ||
13314             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13315                 goto nla_put_failure;
13316
13317         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13318         if (!match_attr)
13319                 goto nla_put_failure;
13320
13321         local_func_attr = nla_nest_start_noflag(msg,
13322                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13323         if (!local_func_attr)
13324                 goto nla_put_failure;
13325
13326         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13327                 goto nla_put_failure;
13328
13329         nla_nest_end(msg, local_func_attr);
13330
13331         peer_func_attr = nla_nest_start_noflag(msg,
13332                                                NL80211_NAN_MATCH_FUNC_PEER);
13333         if (!peer_func_attr)
13334                 goto nla_put_failure;
13335
13336         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13337             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13338                 goto nla_put_failure;
13339
13340         if (match->info && match->info_len &&
13341             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13342                     match->info))
13343                 goto nla_put_failure;
13344
13345         nla_nest_end(msg, peer_func_attr);
13346         nla_nest_end(msg, match_attr);
13347         genlmsg_end(msg, hdr);
13348
13349         if (!wdev->owner_nlportid)
13350                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13351                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13352         else
13353                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13354                                 wdev->owner_nlportid);
13355
13356         return;
13357
13358 nla_put_failure:
13359         nlmsg_free(msg);
13360 }
13361 EXPORT_SYMBOL(cfg80211_nan_match);
13362
13363 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13364                                   u8 inst_id,
13365                                   enum nl80211_nan_func_term_reason reason,
13366                                   u64 cookie, gfp_t gfp)
13367 {
13368         struct wiphy *wiphy = wdev->wiphy;
13369         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13370         struct sk_buff *msg;
13371         struct nlattr *func_attr;
13372         void *hdr;
13373
13374         if (WARN_ON(!inst_id))
13375                 return;
13376
13377         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13378         if (!msg)
13379                 return;
13380
13381         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13382         if (!hdr) {
13383                 nlmsg_free(msg);
13384                 return;
13385         }
13386
13387         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13388             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13389                                          wdev->netdev->ifindex)) ||
13390             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13391                               NL80211_ATTR_PAD))
13392                 goto nla_put_failure;
13393
13394         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13395                               NL80211_ATTR_PAD))
13396                 goto nla_put_failure;
13397
13398         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13399         if (!func_attr)
13400                 goto nla_put_failure;
13401
13402         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13403             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13404                 goto nla_put_failure;
13405
13406         nla_nest_end(msg, func_attr);
13407         genlmsg_end(msg, hdr);
13408
13409         if (!wdev->owner_nlportid)
13410                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13411                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13412         else
13413                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13414                                 wdev->owner_nlportid);
13415
13416         return;
13417
13418 nla_put_failure:
13419         nlmsg_free(msg);
13420 }
13421 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13422
13423 static int nl80211_get_protocol_features(struct sk_buff *skb,
13424                                          struct genl_info *info)
13425 {
13426         void *hdr;
13427         struct sk_buff *msg;
13428
13429         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13430         if (!msg)
13431                 return -ENOMEM;
13432
13433         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13434                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13435         if (!hdr)
13436                 goto nla_put_failure;
13437
13438         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13439                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13440                 goto nla_put_failure;
13441
13442         genlmsg_end(msg, hdr);
13443         return genlmsg_reply(msg, info);
13444
13445  nla_put_failure:
13446         kfree_skb(msg);
13447         return -ENOBUFS;
13448 }
13449
13450 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13451 {
13452         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13453         struct cfg80211_update_ft_ies_params ft_params;
13454         struct net_device *dev = info->user_ptr[1];
13455
13456         if (!rdev->ops->update_ft_ies)
13457                 return -EOPNOTSUPP;
13458
13459         if (!info->attrs[NL80211_ATTR_MDID] ||
13460             !info->attrs[NL80211_ATTR_IE])
13461                 return -EINVAL;
13462
13463         memset(&ft_params, 0, sizeof(ft_params));
13464         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13465         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13466         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13467
13468         return rdev_update_ft_ies(rdev, dev, &ft_params);
13469 }
13470
13471 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13472                                        struct genl_info *info)
13473 {
13474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13475         struct wireless_dev *wdev = info->user_ptr[1];
13476         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13477         u16 duration;
13478         int ret;
13479
13480         if (!rdev->ops->crit_proto_start)
13481                 return -EOPNOTSUPP;
13482
13483         if (WARN_ON(!rdev->ops->crit_proto_stop))
13484                 return -EINVAL;
13485
13486         if (rdev->crit_proto_nlportid)
13487                 return -EBUSY;
13488
13489         /* determine protocol if provided */
13490         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13491                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13492
13493         if (proto >= NUM_NL80211_CRIT_PROTO)
13494                 return -EINVAL;
13495
13496         /* timeout must be provided */
13497         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13498                 return -EINVAL;
13499
13500         duration =
13501                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13502
13503         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13504         if (!ret)
13505                 rdev->crit_proto_nlportid = info->snd_portid;
13506
13507         return ret;
13508 }
13509
13510 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13511                                       struct genl_info *info)
13512 {
13513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13514         struct wireless_dev *wdev = info->user_ptr[1];
13515
13516         if (!rdev->ops->crit_proto_stop)
13517                 return -EOPNOTSUPP;
13518
13519         if (rdev->crit_proto_nlportid) {
13520                 rdev->crit_proto_nlportid = 0;
13521                 rdev_crit_proto_stop(rdev, wdev);
13522         }
13523         return 0;
13524 }
13525
13526 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13527                                        struct nlattr *attr,
13528                                        struct netlink_ext_ack *extack)
13529 {
13530         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13531                 if (attr->nla_type & NLA_F_NESTED) {
13532                         NL_SET_ERR_MSG_ATTR(extack, attr,
13533                                             "unexpected nested data");
13534                         return -EINVAL;
13535                 }
13536
13537                 return 0;
13538         }
13539
13540         if (!(attr->nla_type & NLA_F_NESTED)) {
13541                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13542                 return -EINVAL;
13543         }
13544
13545         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13546 }
13547
13548 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13549 {
13550         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13551         struct wireless_dev *wdev =
13552                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13553         int i, err;
13554         u32 vid, subcmd;
13555
13556         if (!rdev->wiphy.vendor_commands)
13557                 return -EOPNOTSUPP;
13558
13559         if (IS_ERR(wdev)) {
13560                 err = PTR_ERR(wdev);
13561                 if (err != -EINVAL)
13562                         return err;
13563                 wdev = NULL;
13564         } else if (wdev->wiphy != &rdev->wiphy) {
13565                 return -EINVAL;
13566         }
13567
13568         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13569             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13570                 return -EINVAL;
13571
13572         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13573         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13574         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13575                 const struct wiphy_vendor_command *vcmd;
13576                 void *data = NULL;
13577                 int len = 0;
13578
13579                 vcmd = &rdev->wiphy.vendor_commands[i];
13580
13581                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13582                         continue;
13583
13584                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13585                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13586                         if (!wdev)
13587                                 return -EINVAL;
13588                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13589                             !wdev->netdev)
13590                                 return -EINVAL;
13591
13592                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13593                                 if (!wdev_running(wdev))
13594                                         return -ENETDOWN;
13595                         }
13596                 } else {
13597                         wdev = NULL;
13598                 }
13599
13600                 if (!vcmd->doit)
13601                         return -EOPNOTSUPP;
13602
13603                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13604                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13605                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13606
13607                         err = nl80211_vendor_check_policy(vcmd,
13608                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13609                                         info->extack);
13610                         if (err)
13611                                 return err;
13612                 }
13613
13614                 rdev->cur_cmd_info = info;
13615                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13616                 rdev->cur_cmd_info = NULL;
13617                 return err;
13618         }
13619
13620         return -EOPNOTSUPP;
13621 }
13622
13623 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13624                                        struct netlink_callback *cb,
13625                                        struct cfg80211_registered_device **rdev,
13626                                        struct wireless_dev **wdev)
13627 {
13628         struct nlattr **attrbuf;
13629         u32 vid, subcmd;
13630         unsigned int i;
13631         int vcmd_idx = -1;
13632         int err;
13633         void *data = NULL;
13634         unsigned int data_len = 0;
13635
13636         if (cb->args[0]) {
13637                 /* subtract the 1 again here */
13638                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13639                 struct wireless_dev *tmp;
13640
13641                 if (!wiphy)
13642                         return -ENODEV;
13643                 *rdev = wiphy_to_rdev(wiphy);
13644                 *wdev = NULL;
13645
13646                 if (cb->args[1]) {
13647                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13648                                 if (tmp->identifier == cb->args[1] - 1) {
13649                                         *wdev = tmp;
13650                                         break;
13651                                 }
13652                         }
13653                 }
13654
13655                 /* keep rtnl locked in successful case */
13656                 return 0;
13657         }
13658
13659         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13660         if (!attrbuf)
13661                 return -ENOMEM;
13662
13663         err = nlmsg_parse_deprecated(cb->nlh,
13664                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13665                                      attrbuf, nl80211_fam.maxattr,
13666                                      nl80211_policy, NULL);
13667         if (err)
13668                 goto out;
13669
13670         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13671             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13672                 err = -EINVAL;
13673                 goto out;
13674         }
13675
13676         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13677         if (IS_ERR(*wdev))
13678                 *wdev = NULL;
13679
13680         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13681         if (IS_ERR(*rdev)) {
13682                 err = PTR_ERR(*rdev);
13683                 goto out;
13684         }
13685
13686         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13687         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13688
13689         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13690                 const struct wiphy_vendor_command *vcmd;
13691
13692                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13693
13694                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13695                         continue;
13696
13697                 if (!vcmd->dumpit) {
13698                         err = -EOPNOTSUPP;
13699                         goto out;
13700                 }
13701
13702                 vcmd_idx = i;
13703                 break;
13704         }
13705
13706         if (vcmd_idx < 0) {
13707                 err = -EOPNOTSUPP;
13708                 goto out;
13709         }
13710
13711         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13712                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13713                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13714
13715                 err = nl80211_vendor_check_policy(
13716                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13717                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13718                                 cb->extack);
13719                 if (err)
13720                         goto out;
13721         }
13722
13723         /* 0 is the first index - add 1 to parse only once */
13724         cb->args[0] = (*rdev)->wiphy_idx + 1;
13725         /* add 1 to know if it was NULL */
13726         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13727         cb->args[2] = vcmd_idx;
13728         cb->args[3] = (unsigned long)data;
13729         cb->args[4] = data_len;
13730
13731         /* keep rtnl locked in successful case */
13732         err = 0;
13733 out:
13734         kfree(attrbuf);
13735         return err;
13736 }
13737
13738 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13739                                    struct netlink_callback *cb)
13740 {
13741         struct cfg80211_registered_device *rdev;
13742         struct wireless_dev *wdev;
13743         unsigned int vcmd_idx;
13744         const struct wiphy_vendor_command *vcmd;
13745         void *data;
13746         int data_len;
13747         int err;
13748         struct nlattr *vendor_data;
13749
13750         rtnl_lock();
13751         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13752         if (err)
13753                 goto out;
13754
13755         vcmd_idx = cb->args[2];
13756         data = (void *)cb->args[3];
13757         data_len = cb->args[4];
13758         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13759
13760         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13761                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13762                 if (!wdev) {
13763                         err = -EINVAL;
13764                         goto out;
13765                 }
13766                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13767                     !wdev->netdev) {
13768                         err = -EINVAL;
13769                         goto out;
13770                 }
13771
13772                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13773                         if (!wdev_running(wdev)) {
13774                                 err = -ENETDOWN;
13775                                 goto out;
13776                         }
13777                 }
13778         }
13779
13780         while (1) {
13781                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13782                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13783                                            NL80211_CMD_VENDOR);
13784                 if (!hdr)
13785                         break;
13786
13787                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13788                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13789                                                wdev_id(wdev),
13790                                                NL80211_ATTR_PAD))) {
13791                         genlmsg_cancel(skb, hdr);
13792                         break;
13793                 }
13794
13795                 vendor_data = nla_nest_start_noflag(skb,
13796                                                     NL80211_ATTR_VENDOR_DATA);
13797                 if (!vendor_data) {
13798                         genlmsg_cancel(skb, hdr);
13799                         break;
13800                 }
13801
13802                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13803                                    (unsigned long *)&cb->args[5]);
13804                 nla_nest_end(skb, vendor_data);
13805
13806                 if (err == -ENOBUFS || err == -ENOENT) {
13807                         genlmsg_cancel(skb, hdr);
13808                         break;
13809                 } else if (err <= 0) {
13810                         genlmsg_cancel(skb, hdr);
13811                         goto out;
13812                 }
13813
13814                 genlmsg_end(skb, hdr);
13815         }
13816
13817         err = skb->len;
13818  out:
13819         rtnl_unlock();
13820         return err;
13821 }
13822
13823 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13824                                            enum nl80211_commands cmd,
13825                                            enum nl80211_attrs attr,
13826                                            int approxlen)
13827 {
13828         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13829
13830         if (WARN_ON(!rdev->cur_cmd_info))
13831                 return NULL;
13832
13833         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13834                                            rdev->cur_cmd_info->snd_portid,
13835                                            rdev->cur_cmd_info->snd_seq,
13836                                            cmd, attr, NULL, GFP_KERNEL);
13837 }
13838 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13839
13840 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13841 {
13842         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13843         void *hdr = ((void **)skb->cb)[1];
13844         struct nlattr *data = ((void **)skb->cb)[2];
13845
13846         /* clear CB data for netlink core to own from now on */
13847         memset(skb->cb, 0, sizeof(skb->cb));
13848
13849         if (WARN_ON(!rdev->cur_cmd_info)) {
13850                 kfree_skb(skb);
13851                 return -EINVAL;
13852         }
13853
13854         nla_nest_end(skb, data);
13855         genlmsg_end(skb, hdr);
13856         return genlmsg_reply(skb, rdev->cur_cmd_info);
13857 }
13858 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13859
13860 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13861 {
13862         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13863
13864         if (WARN_ON(!rdev->cur_cmd_info))
13865                 return 0;
13866
13867         return rdev->cur_cmd_info->snd_portid;
13868 }
13869 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13870
13871 static int nl80211_set_qos_map(struct sk_buff *skb,
13872                                struct genl_info *info)
13873 {
13874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13875         struct cfg80211_qos_map *qos_map = NULL;
13876         struct net_device *dev = info->user_ptr[1];
13877         u8 *pos, len, num_des, des_len, des;
13878         int ret;
13879
13880         if (!rdev->ops->set_qos_map)
13881                 return -EOPNOTSUPP;
13882
13883         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13884                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13885                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13886
13887                 if (len % 2)
13888                         return -EINVAL;
13889
13890                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13891                 if (!qos_map)
13892                         return -ENOMEM;
13893
13894                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13895                 if (num_des) {
13896                         des_len = num_des *
13897                                 sizeof(struct cfg80211_dscp_exception);
13898                         memcpy(qos_map->dscp_exception, pos, des_len);
13899                         qos_map->num_des = num_des;
13900                         for (des = 0; des < num_des; des++) {
13901                                 if (qos_map->dscp_exception[des].up > 7) {
13902                                         kfree(qos_map);
13903                                         return -EINVAL;
13904                                 }
13905                         }
13906                         pos += des_len;
13907                 }
13908                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13909         }
13910
13911         wdev_lock(dev->ieee80211_ptr);
13912         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13913         if (!ret)
13914                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13915         wdev_unlock(dev->ieee80211_ptr);
13916
13917         kfree(qos_map);
13918         return ret;
13919 }
13920
13921 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13922 {
13923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13924         struct net_device *dev = info->user_ptr[1];
13925         struct wireless_dev *wdev = dev->ieee80211_ptr;
13926         const u8 *peer;
13927         u8 tsid, up;
13928         u16 admitted_time = 0;
13929         int err;
13930
13931         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13932                 return -EOPNOTSUPP;
13933
13934         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13935             !info->attrs[NL80211_ATTR_USER_PRIO])
13936                 return -EINVAL;
13937
13938         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13939         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13940
13941         /* WMM uses TIDs 0-7 even for TSPEC */
13942         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13943                 /* TODO: handle 802.11 TSPEC/admission control
13944                  * need more attributes for that (e.g. BA session requirement);
13945                  * change the WMM adminssion test above to allow both then
13946                  */
13947                 return -EINVAL;
13948         }
13949
13950         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13951
13952         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13953                 admitted_time =
13954                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13955                 if (!admitted_time)
13956                         return -EINVAL;
13957         }
13958
13959         wdev_lock(wdev);
13960         switch (wdev->iftype) {
13961         case NL80211_IFTYPE_STATION:
13962         case NL80211_IFTYPE_P2P_CLIENT:
13963                 if (wdev->current_bss)
13964                         break;
13965                 err = -ENOTCONN;
13966                 goto out;
13967         default:
13968                 err = -EOPNOTSUPP;
13969                 goto out;
13970         }
13971
13972         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13973
13974  out:
13975         wdev_unlock(wdev);
13976         return err;
13977 }
13978
13979 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13980 {
13981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13982         struct net_device *dev = info->user_ptr[1];
13983         struct wireless_dev *wdev = dev->ieee80211_ptr;
13984         const u8 *peer;
13985         u8 tsid;
13986         int err;
13987
13988         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13989                 return -EINVAL;
13990
13991         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13992         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13993
13994         wdev_lock(wdev);
13995         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13996         wdev_unlock(wdev);
13997
13998         return err;
13999 }
14000
14001 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14002                                        struct genl_info *info)
14003 {
14004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14005         struct net_device *dev = info->user_ptr[1];
14006         struct wireless_dev *wdev = dev->ieee80211_ptr;
14007         struct cfg80211_chan_def chandef = {};
14008         const u8 *addr;
14009         u8 oper_class;
14010         int err;
14011
14012         if (!rdev->ops->tdls_channel_switch ||
14013             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14014                 return -EOPNOTSUPP;
14015
14016         switch (dev->ieee80211_ptr->iftype) {
14017         case NL80211_IFTYPE_STATION:
14018         case NL80211_IFTYPE_P2P_CLIENT:
14019                 break;
14020         default:
14021                 return -EOPNOTSUPP;
14022         }
14023
14024         if (!info->attrs[NL80211_ATTR_MAC] ||
14025             !info->attrs[NL80211_ATTR_OPER_CLASS])
14026                 return -EINVAL;
14027
14028         err = nl80211_parse_chandef(rdev, info, &chandef);
14029         if (err)
14030                 return err;
14031
14032         /*
14033          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14034          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14035          * specification is not defined for them.
14036          */
14037         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14038             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14039             chandef.width != NL80211_CHAN_WIDTH_20)
14040                 return -EINVAL;
14041
14042         /* we will be active on the TDLS link */
14043         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14044                                            wdev->iftype))
14045                 return -EINVAL;
14046
14047         /* don't allow switching to DFS channels */
14048         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14049                 return -EINVAL;
14050
14051         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14052         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14053
14054         wdev_lock(wdev);
14055         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14056         wdev_unlock(wdev);
14057
14058         return err;
14059 }
14060
14061 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14062                                               struct genl_info *info)
14063 {
14064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14065         struct net_device *dev = info->user_ptr[1];
14066         struct wireless_dev *wdev = dev->ieee80211_ptr;
14067         const u8 *addr;
14068
14069         if (!rdev->ops->tdls_channel_switch ||
14070             !rdev->ops->tdls_cancel_channel_switch ||
14071             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14072                 return -EOPNOTSUPP;
14073
14074         switch (dev->ieee80211_ptr->iftype) {
14075         case NL80211_IFTYPE_STATION:
14076         case NL80211_IFTYPE_P2P_CLIENT:
14077                 break;
14078         default:
14079                 return -EOPNOTSUPP;
14080         }
14081
14082         if (!info->attrs[NL80211_ATTR_MAC])
14083                 return -EINVAL;
14084
14085         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14086
14087         wdev_lock(wdev);
14088         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14089         wdev_unlock(wdev);
14090
14091         return 0;
14092 }
14093
14094 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14095                                             struct genl_info *info)
14096 {
14097         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14098         struct net_device *dev = info->user_ptr[1];
14099         struct wireless_dev *wdev = dev->ieee80211_ptr;
14100         const struct nlattr *nla;
14101         bool enabled;
14102
14103         if (!rdev->ops->set_multicast_to_unicast)
14104                 return -EOPNOTSUPP;
14105
14106         if (wdev->iftype != NL80211_IFTYPE_AP &&
14107             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14108                 return -EOPNOTSUPP;
14109
14110         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14111         enabled = nla_get_flag(nla);
14112
14113         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14114 }
14115
14116 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14117 {
14118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14119         struct net_device *dev = info->user_ptr[1];
14120         struct wireless_dev *wdev = dev->ieee80211_ptr;
14121         struct cfg80211_pmk_conf pmk_conf = {};
14122         int ret;
14123
14124         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14125             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14126                 return -EOPNOTSUPP;
14127
14128         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14129                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14130                 return -EOPNOTSUPP;
14131
14132         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14133                 return -EINVAL;
14134
14135         wdev_lock(wdev);
14136         if (!wdev->current_bss) {
14137                 ret = -ENOTCONN;
14138                 goto out;
14139         }
14140
14141         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14142         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14143                 ret = -EINVAL;
14144                 goto out;
14145         }
14146
14147         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14148         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14149         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14150             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14151                 ret = -EINVAL;
14152                 goto out;
14153         }
14154
14155         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14156                 pmk_conf.pmk_r0_name =
14157                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14158
14159         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14160 out:
14161         wdev_unlock(wdev);
14162         return ret;
14163 }
14164
14165 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14166 {
14167         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14168         struct net_device *dev = info->user_ptr[1];
14169         struct wireless_dev *wdev = dev->ieee80211_ptr;
14170         const u8 *aa;
14171         int ret;
14172
14173         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14174             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14175                 return -EOPNOTSUPP;
14176
14177         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14178                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14179                 return -EOPNOTSUPP;
14180
14181         if (!info->attrs[NL80211_ATTR_MAC])
14182                 return -EINVAL;
14183
14184         wdev_lock(wdev);
14185         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14186         ret = rdev_del_pmk(rdev, dev, aa);
14187         wdev_unlock(wdev);
14188
14189         return ret;
14190 }
14191
14192 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14193 {
14194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14195         struct net_device *dev = info->user_ptr[1];
14196         struct cfg80211_external_auth_params params;
14197
14198         if (!rdev->ops->external_auth)
14199                 return -EOPNOTSUPP;
14200
14201         if (!info->attrs[NL80211_ATTR_SSID] &&
14202             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14203             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14204                 return -EINVAL;
14205
14206         if (!info->attrs[NL80211_ATTR_BSSID])
14207                 return -EINVAL;
14208
14209         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14210                 return -EINVAL;
14211
14212         memset(&params, 0, sizeof(params));
14213
14214         if (info->attrs[NL80211_ATTR_SSID]) {
14215                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14216                 if (params.ssid.ssid_len == 0)
14217                         return -EINVAL;
14218                 memcpy(params.ssid.ssid,
14219                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14220                        params.ssid.ssid_len);
14221         }
14222
14223         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14224                ETH_ALEN);
14225
14226         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14227
14228         if (info->attrs[NL80211_ATTR_PMKID])
14229                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14230
14231         return rdev_external_auth(rdev, dev, &params);
14232 }
14233
14234 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14235 {
14236         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14238         struct net_device *dev = info->user_ptr[1];
14239         struct wireless_dev *wdev = dev->ieee80211_ptr;
14240         const u8 *buf;
14241         size_t len;
14242         u8 *dest;
14243         u16 proto;
14244         bool noencrypt;
14245         u64 cookie = 0;
14246         int err;
14247
14248         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14249                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14250                 return -EOPNOTSUPP;
14251
14252         if (!rdev->ops->tx_control_port)
14253                 return -EOPNOTSUPP;
14254
14255         if (!info->attrs[NL80211_ATTR_FRAME] ||
14256             !info->attrs[NL80211_ATTR_MAC] ||
14257             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14258                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14259                 return -EINVAL;
14260         }
14261
14262         wdev_lock(wdev);
14263
14264         switch (wdev->iftype) {
14265         case NL80211_IFTYPE_AP:
14266         case NL80211_IFTYPE_P2P_GO:
14267         case NL80211_IFTYPE_MESH_POINT:
14268                 break;
14269         case NL80211_IFTYPE_ADHOC:
14270         case NL80211_IFTYPE_STATION:
14271         case NL80211_IFTYPE_P2P_CLIENT:
14272                 if (wdev->current_bss)
14273                         break;
14274                 err = -ENOTCONN;
14275                 goto out;
14276         default:
14277                 err = -EOPNOTSUPP;
14278                 goto out;
14279         }
14280
14281         wdev_unlock(wdev);
14282
14283         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14284         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14285         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14286         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14287         noencrypt =
14288                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14289
14290         err = rdev_tx_control_port(rdev, dev, buf, len,
14291                                    dest, cpu_to_be16(proto), noencrypt,
14292                                    dont_wait_for_ack ? NULL : &cookie);
14293         if (!err && !dont_wait_for_ack)
14294                 nl_set_extack_cookie_u64(info->extack, cookie);
14295         return err;
14296  out:
14297         wdev_unlock(wdev);
14298         return err;
14299 }
14300
14301 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14302                                            struct genl_info *info)
14303 {
14304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14305         struct net_device *dev = info->user_ptr[1];
14306         struct wireless_dev *wdev = dev->ieee80211_ptr;
14307         struct cfg80211_ftm_responder_stats ftm_stats = {};
14308         struct sk_buff *msg;
14309         void *hdr;
14310         struct nlattr *ftm_stats_attr;
14311         int err;
14312
14313         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14314                 return -EOPNOTSUPP;
14315
14316         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14317         if (err)
14318                 return err;
14319
14320         if (!ftm_stats.filled)
14321                 return -ENODATA;
14322
14323         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14324         if (!msg)
14325                 return -ENOMEM;
14326
14327         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14328                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14329         if (!hdr)
14330                 goto nla_put_failure;
14331
14332         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14333                 goto nla_put_failure;
14334
14335         ftm_stats_attr = nla_nest_start_noflag(msg,
14336                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14337         if (!ftm_stats_attr)
14338                 goto nla_put_failure;
14339
14340 #define SET_FTM(field, name, type)                                       \
14341         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14342             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14343                              ftm_stats.field))                           \
14344                 goto nla_put_failure; } while (0)
14345 #define SET_FTM_U64(field, name)                                         \
14346         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14347             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14348                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14349                 goto nla_put_failure; } while (0)
14350
14351         SET_FTM(success_num, SUCCESS_NUM, u32);
14352         SET_FTM(partial_num, PARTIAL_NUM, u32);
14353         SET_FTM(failed_num, FAILED_NUM, u32);
14354         SET_FTM(asap_num, ASAP_NUM, u32);
14355         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14356         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14357         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14358         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14359         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14360 #undef SET_FTM
14361
14362         nla_nest_end(msg, ftm_stats_attr);
14363
14364         genlmsg_end(msg, hdr);
14365         return genlmsg_reply(msg, info);
14366
14367 nla_put_failure:
14368         nlmsg_free(msg);
14369         return -ENOBUFS;
14370 }
14371
14372 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14373 {
14374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14375         struct cfg80211_update_owe_info owe_info;
14376         struct net_device *dev = info->user_ptr[1];
14377
14378         if (!rdev->ops->update_owe_info)
14379                 return -EOPNOTSUPP;
14380
14381         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14382             !info->attrs[NL80211_ATTR_MAC])
14383                 return -EINVAL;
14384
14385         memset(&owe_info, 0, sizeof(owe_info));
14386         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14387         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14388
14389         if (info->attrs[NL80211_ATTR_IE]) {
14390                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14391                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14392         }
14393
14394         return rdev_update_owe_info(rdev, dev, &owe_info);
14395 }
14396
14397 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14398 {
14399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14400         struct net_device *dev = info->user_ptr[1];
14401         struct wireless_dev *wdev = dev->ieee80211_ptr;
14402         struct station_info sinfo = {};
14403         const u8 *buf;
14404         size_t len;
14405         u8 *dest;
14406         int err;
14407
14408         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14409                 return -EOPNOTSUPP;
14410
14411         if (!info->attrs[NL80211_ATTR_MAC] ||
14412             !info->attrs[NL80211_ATTR_FRAME]) {
14413                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14414                 return -EINVAL;
14415         }
14416
14417         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14418                 return -EOPNOTSUPP;
14419
14420         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14421         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14422         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14423
14424         if (len < sizeof(struct ethhdr))
14425                 return -EINVAL;
14426
14427         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14428             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14429                 return -EINVAL;
14430
14431         err = rdev_get_station(rdev, dev, dest, &sinfo);
14432         if (err)
14433                 return err;
14434
14435         cfg80211_sinfo_release_content(&sinfo);
14436
14437         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14438 }
14439
14440 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14441                           struct nlattr *attrs[], struct net_device *dev,
14442                           struct cfg80211_tid_cfg *tid_conf,
14443                           struct genl_info *info, const u8 *peer)
14444 {
14445         struct netlink_ext_ack *extack = info->extack;
14446         u64 mask;
14447         int err;
14448
14449         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14450                 return -EINVAL;
14451
14452         tid_conf->config_override =
14453                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14454         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14455
14456         if (tid_conf->config_override) {
14457                 if (rdev->ops->reset_tid_config) {
14458                         err = rdev_reset_tid_config(rdev, dev, peer,
14459                                                     tid_conf->tids);
14460                         if (err)
14461                                 return err;
14462                 } else {
14463                         return -EINVAL;
14464                 }
14465         }
14466
14467         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14468                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14469                 tid_conf->noack =
14470                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14471         }
14472
14473         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14474                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14475                 tid_conf->retry_short =
14476                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14477
14478                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14479                         return -EINVAL;
14480         }
14481
14482         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14483                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14484                 tid_conf->retry_long =
14485                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14486
14487                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14488                         return -EINVAL;
14489         }
14490
14491         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14492                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14493                 tid_conf->ampdu =
14494                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14495         }
14496
14497         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14498                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14499                 tid_conf->rtscts =
14500                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14501         }
14502
14503         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14504                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14505                 tid_conf->amsdu =
14506                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14507         }
14508
14509         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14510                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14511
14512                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14513
14514                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14515                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14516                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14517                                                     &tid_conf->txrate_mask, dev);
14518                         if (err)
14519                                 return err;
14520
14521                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14522                 }
14523                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14524         }
14525
14526         if (peer)
14527                 mask = rdev->wiphy.tid_config_support.peer;
14528         else
14529                 mask = rdev->wiphy.tid_config_support.vif;
14530
14531         if (tid_conf->mask & ~mask) {
14532                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14533                 return -ENOTSUPP;
14534         }
14535
14536         return 0;
14537 }
14538
14539 static int nl80211_set_tid_config(struct sk_buff *skb,
14540                                   struct genl_info *info)
14541 {
14542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14543         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14544         struct net_device *dev = info->user_ptr[1];
14545         struct cfg80211_tid_config *tid_config;
14546         struct nlattr *tid;
14547         int conf_idx = 0, rem_conf;
14548         int ret = -EINVAL;
14549         u32 num_conf = 0;
14550
14551         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14552                 return -EINVAL;
14553
14554         if (!rdev->ops->set_tid_config)
14555                 return -EOPNOTSUPP;
14556
14557         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14558                             rem_conf)
14559                 num_conf++;
14560
14561         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14562                              GFP_KERNEL);
14563         if (!tid_config)
14564                 return -ENOMEM;
14565
14566         tid_config->n_tid_conf = num_conf;
14567
14568         if (info->attrs[NL80211_ATTR_MAC])
14569                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14570
14571         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14572                             rem_conf) {
14573                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14574                                        tid, NULL, NULL);
14575
14576                 if (ret)
14577                         goto bad_tid_conf;
14578
14579                 ret = parse_tid_conf(rdev, attrs, dev,
14580                                      &tid_config->tid_conf[conf_idx],
14581                                      info, tid_config->peer);
14582                 if (ret)
14583                         goto bad_tid_conf;
14584
14585                 conf_idx++;
14586         }
14587
14588         ret = rdev_set_tid_config(rdev, dev, tid_config);
14589
14590 bad_tid_conf:
14591         kfree(tid_config);
14592         return ret;
14593 }
14594
14595 #define NL80211_FLAG_NEED_WIPHY         0x01
14596 #define NL80211_FLAG_NEED_NETDEV        0x02
14597 #define NL80211_FLAG_NEED_RTNL          0x04
14598 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14599 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14600                                          NL80211_FLAG_CHECK_NETDEV_UP)
14601 #define NL80211_FLAG_NEED_WDEV          0x10
14602 /* If a netdev is associated, it must be UP, P2P must be started */
14603 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14604                                          NL80211_FLAG_CHECK_NETDEV_UP)
14605 #define NL80211_FLAG_CLEAR_SKB          0x20
14606
14607 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14608                             struct genl_info *info)
14609 {
14610         struct cfg80211_registered_device *rdev;
14611         struct wireless_dev *wdev;
14612         struct net_device *dev;
14613         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14614
14615         if (rtnl)
14616                 rtnl_lock();
14617
14618         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14619                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14620                 if (IS_ERR(rdev)) {
14621                         if (rtnl)
14622                                 rtnl_unlock();
14623                         return PTR_ERR(rdev);
14624                 }
14625                 info->user_ptr[0] = rdev;
14626         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14627                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14628                 ASSERT_RTNL();
14629
14630                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14631                                                   info->attrs);
14632                 if (IS_ERR(wdev)) {
14633                         if (rtnl)
14634                                 rtnl_unlock();
14635                         return PTR_ERR(wdev);
14636                 }
14637
14638                 dev = wdev->netdev;
14639                 rdev = wiphy_to_rdev(wdev->wiphy);
14640
14641                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14642                         if (!dev) {
14643                                 if (rtnl)
14644                                         rtnl_unlock();
14645                                 return -EINVAL;
14646                         }
14647
14648                         info->user_ptr[1] = dev;
14649                 } else {
14650                         info->user_ptr[1] = wdev;
14651                 }
14652
14653                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14654                     !wdev_running(wdev)) {
14655                         if (rtnl)
14656                                 rtnl_unlock();
14657                         return -ENETDOWN;
14658                 }
14659
14660                 if (dev)
14661                         dev_hold(dev);
14662
14663                 info->user_ptr[0] = rdev;
14664         }
14665
14666         return 0;
14667 }
14668
14669 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14670                               struct genl_info *info)
14671 {
14672         if (info->user_ptr[1]) {
14673                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14674                         struct wireless_dev *wdev = info->user_ptr[1];
14675
14676                         if (wdev->netdev)
14677                                 dev_put(wdev->netdev);
14678                 } else {
14679                         dev_put(info->user_ptr[1]);
14680                 }
14681         }
14682
14683         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14684                 rtnl_unlock();
14685
14686         /* If needed, clear the netlink message payload from the SKB
14687          * as it might contain key data that shouldn't stick around on
14688          * the heap after the SKB is freed. The netlink message header
14689          * is still needed for further processing, so leave it intact.
14690          */
14691         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14692                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14693
14694                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14695         }
14696 }
14697
14698 static const struct genl_ops nl80211_ops[] = {
14699         {
14700                 .cmd = NL80211_CMD_GET_WIPHY,
14701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14702                 .doit = nl80211_get_wiphy,
14703                 .dumpit = nl80211_dump_wiphy,
14704                 .done = nl80211_dump_wiphy_done,
14705                 /* can be retrieved by unprivileged users */
14706                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14707                                   NL80211_FLAG_NEED_RTNL,
14708         },
14709 };
14710
14711 static const struct genl_small_ops nl80211_small_ops[] = {
14712         {
14713                 .cmd = NL80211_CMD_SET_WIPHY,
14714                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14715                 .doit = nl80211_set_wiphy,
14716                 .flags = GENL_UNS_ADMIN_PERM,
14717                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14718         },
14719         {
14720                 .cmd = NL80211_CMD_GET_INTERFACE,
14721                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14722                 .doit = nl80211_get_interface,
14723                 .dumpit = nl80211_dump_interface,
14724                 /* can be retrieved by unprivileged users */
14725                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14726                                   NL80211_FLAG_NEED_RTNL,
14727         },
14728         {
14729                 .cmd = NL80211_CMD_SET_INTERFACE,
14730                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14731                 .doit = nl80211_set_interface,
14732                 .flags = GENL_UNS_ADMIN_PERM,
14733                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14734                                   NL80211_FLAG_NEED_RTNL,
14735         },
14736         {
14737                 .cmd = NL80211_CMD_NEW_INTERFACE,
14738                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14739                 .doit = nl80211_new_interface,
14740                 .flags = GENL_UNS_ADMIN_PERM,
14741                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14742                                   NL80211_FLAG_NEED_RTNL,
14743         },
14744         {
14745                 .cmd = NL80211_CMD_DEL_INTERFACE,
14746                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14747                 .doit = nl80211_del_interface,
14748                 .flags = GENL_UNS_ADMIN_PERM,
14749                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14750                                   NL80211_FLAG_NEED_RTNL,
14751         },
14752         {
14753                 .cmd = NL80211_CMD_GET_KEY,
14754                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14755                 .doit = nl80211_get_key,
14756                 .flags = GENL_UNS_ADMIN_PERM,
14757                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14758                                   NL80211_FLAG_NEED_RTNL,
14759         },
14760         {
14761                 .cmd = NL80211_CMD_SET_KEY,
14762                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14763                 .doit = nl80211_set_key,
14764                 .flags = GENL_UNS_ADMIN_PERM,
14765                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14766                                   NL80211_FLAG_NEED_RTNL |
14767                                   NL80211_FLAG_CLEAR_SKB,
14768         },
14769         {
14770                 .cmd = NL80211_CMD_NEW_KEY,
14771                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14772                 .doit = nl80211_new_key,
14773                 .flags = GENL_UNS_ADMIN_PERM,
14774                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14775                                   NL80211_FLAG_NEED_RTNL |
14776                                   NL80211_FLAG_CLEAR_SKB,
14777         },
14778         {
14779                 .cmd = NL80211_CMD_DEL_KEY,
14780                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14781                 .doit = nl80211_del_key,
14782                 .flags = GENL_UNS_ADMIN_PERM,
14783                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14784                                   NL80211_FLAG_NEED_RTNL,
14785         },
14786         {
14787                 .cmd = NL80211_CMD_SET_BEACON,
14788                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14789                 .flags = GENL_UNS_ADMIN_PERM,
14790                 .doit = nl80211_set_beacon,
14791                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14792                                   NL80211_FLAG_NEED_RTNL,
14793         },
14794         {
14795                 .cmd = NL80211_CMD_START_AP,
14796                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14797                 .flags = GENL_UNS_ADMIN_PERM,
14798                 .doit = nl80211_start_ap,
14799                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14800                                   NL80211_FLAG_NEED_RTNL,
14801         },
14802         {
14803                 .cmd = NL80211_CMD_STOP_AP,
14804                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14805                 .flags = GENL_UNS_ADMIN_PERM,
14806                 .doit = nl80211_stop_ap,
14807                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14808                                   NL80211_FLAG_NEED_RTNL,
14809         },
14810         {
14811                 .cmd = NL80211_CMD_GET_STATION,
14812                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14813                 .doit = nl80211_get_station,
14814                 .dumpit = nl80211_dump_station,
14815                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14816                                   NL80211_FLAG_NEED_RTNL,
14817         },
14818         {
14819                 .cmd = NL80211_CMD_SET_STATION,
14820                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14821                 .doit = nl80211_set_station,
14822                 .flags = GENL_UNS_ADMIN_PERM,
14823                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14824                                   NL80211_FLAG_NEED_RTNL,
14825         },
14826         {
14827                 .cmd = NL80211_CMD_NEW_STATION,
14828                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14829                 .doit = nl80211_new_station,
14830                 .flags = GENL_UNS_ADMIN_PERM,
14831                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14832                                   NL80211_FLAG_NEED_RTNL,
14833         },
14834         {
14835                 .cmd = NL80211_CMD_DEL_STATION,
14836                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14837                 .doit = nl80211_del_station,
14838                 .flags = GENL_UNS_ADMIN_PERM,
14839                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14840                                   NL80211_FLAG_NEED_RTNL,
14841         },
14842         {
14843                 .cmd = NL80211_CMD_GET_MPATH,
14844                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14845                 .doit = nl80211_get_mpath,
14846                 .dumpit = nl80211_dump_mpath,
14847                 .flags = GENL_UNS_ADMIN_PERM,
14848                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14849                                   NL80211_FLAG_NEED_RTNL,
14850         },
14851         {
14852                 .cmd = NL80211_CMD_GET_MPP,
14853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14854                 .doit = nl80211_get_mpp,
14855                 .dumpit = nl80211_dump_mpp,
14856                 .flags = GENL_UNS_ADMIN_PERM,
14857                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14858                                   NL80211_FLAG_NEED_RTNL,
14859         },
14860         {
14861                 .cmd = NL80211_CMD_SET_MPATH,
14862                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14863                 .doit = nl80211_set_mpath,
14864                 .flags = GENL_UNS_ADMIN_PERM,
14865                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14866                                   NL80211_FLAG_NEED_RTNL,
14867         },
14868         {
14869                 .cmd = NL80211_CMD_NEW_MPATH,
14870                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14871                 .doit = nl80211_new_mpath,
14872                 .flags = GENL_UNS_ADMIN_PERM,
14873                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14874                                   NL80211_FLAG_NEED_RTNL,
14875         },
14876         {
14877                 .cmd = NL80211_CMD_DEL_MPATH,
14878                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14879                 .doit = nl80211_del_mpath,
14880                 .flags = GENL_UNS_ADMIN_PERM,
14881                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14882                                   NL80211_FLAG_NEED_RTNL,
14883         },
14884         {
14885                 .cmd = NL80211_CMD_SET_BSS,
14886                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14887                 .doit = nl80211_set_bss,
14888                 .flags = GENL_UNS_ADMIN_PERM,
14889                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14890                                   NL80211_FLAG_NEED_RTNL,
14891         },
14892         {
14893                 .cmd = NL80211_CMD_GET_REG,
14894                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14895                 .doit = nl80211_get_reg_do,
14896                 .dumpit = nl80211_get_reg_dump,
14897                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14898                 /* can be retrieved by unprivileged users */
14899         },
14900 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14901         {
14902                 .cmd = NL80211_CMD_SET_REG,
14903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14904                 .doit = nl80211_set_reg,
14905                 .flags = GENL_ADMIN_PERM,
14906                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14907         },
14908 #endif
14909         {
14910                 .cmd = NL80211_CMD_REQ_SET_REG,
14911                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14912                 .doit = nl80211_req_set_reg,
14913                 .flags = GENL_ADMIN_PERM,
14914         },
14915         {
14916                 .cmd = NL80211_CMD_RELOAD_REGDB,
14917                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14918                 .doit = nl80211_reload_regdb,
14919                 .flags = GENL_ADMIN_PERM,
14920         },
14921         {
14922                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14923                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14924                 .doit = nl80211_get_mesh_config,
14925                 /* can be retrieved by unprivileged users */
14926                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14927                                   NL80211_FLAG_NEED_RTNL,
14928         },
14929         {
14930                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14931                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14932                 .doit = nl80211_update_mesh_config,
14933                 .flags = GENL_UNS_ADMIN_PERM,
14934                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14935                                   NL80211_FLAG_NEED_RTNL,
14936         },
14937         {
14938                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14939                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14940                 .doit = nl80211_trigger_scan,
14941                 .flags = GENL_UNS_ADMIN_PERM,
14942                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14943                                   NL80211_FLAG_NEED_RTNL,
14944         },
14945         {
14946                 .cmd = NL80211_CMD_ABORT_SCAN,
14947                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14948                 .doit = nl80211_abort_scan,
14949                 .flags = GENL_UNS_ADMIN_PERM,
14950                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14951                                   NL80211_FLAG_NEED_RTNL,
14952         },
14953         {
14954                 .cmd = NL80211_CMD_GET_SCAN,
14955                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14956                 .dumpit = nl80211_dump_scan,
14957         },
14958         {
14959                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14960                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14961                 .doit = nl80211_start_sched_scan,
14962                 .flags = GENL_UNS_ADMIN_PERM,
14963                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14964                                   NL80211_FLAG_NEED_RTNL,
14965         },
14966         {
14967                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14969                 .doit = nl80211_stop_sched_scan,
14970                 .flags = GENL_UNS_ADMIN_PERM,
14971                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14972                                   NL80211_FLAG_NEED_RTNL,
14973         },
14974         {
14975                 .cmd = NL80211_CMD_AUTHENTICATE,
14976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977                 .doit = nl80211_authenticate,
14978                 .flags = GENL_UNS_ADMIN_PERM,
14979                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14980                                   NL80211_FLAG_NEED_RTNL |
14981                                   NL80211_FLAG_CLEAR_SKB,
14982         },
14983         {
14984                 .cmd = NL80211_CMD_ASSOCIATE,
14985                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14986                 .doit = nl80211_associate,
14987                 .flags = GENL_UNS_ADMIN_PERM,
14988                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14989                                   NL80211_FLAG_NEED_RTNL |
14990                                   NL80211_FLAG_CLEAR_SKB,
14991         },
14992         {
14993                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14994                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14995                 .doit = nl80211_deauthenticate,
14996                 .flags = GENL_UNS_ADMIN_PERM,
14997                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14998                                   NL80211_FLAG_NEED_RTNL,
14999         },
15000         {
15001                 .cmd = NL80211_CMD_DISASSOCIATE,
15002                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15003                 .doit = nl80211_disassociate,
15004                 .flags = GENL_UNS_ADMIN_PERM,
15005                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15006                                   NL80211_FLAG_NEED_RTNL,
15007         },
15008         {
15009                 .cmd = NL80211_CMD_JOIN_IBSS,
15010                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15011                 .doit = nl80211_join_ibss,
15012                 .flags = GENL_UNS_ADMIN_PERM,
15013                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15014                                   NL80211_FLAG_NEED_RTNL,
15015         },
15016         {
15017                 .cmd = NL80211_CMD_LEAVE_IBSS,
15018                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15019                 .doit = nl80211_leave_ibss,
15020                 .flags = GENL_UNS_ADMIN_PERM,
15021                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15022                                   NL80211_FLAG_NEED_RTNL,
15023         },
15024 #ifdef CONFIG_NL80211_TESTMODE
15025         {
15026                 .cmd = NL80211_CMD_TESTMODE,
15027                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15028                 .doit = nl80211_testmode_do,
15029                 .dumpit = nl80211_testmode_dump,
15030                 .flags = GENL_UNS_ADMIN_PERM,
15031                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15032                                   NL80211_FLAG_NEED_RTNL,
15033         },
15034 #endif
15035         {
15036                 .cmd = NL80211_CMD_CONNECT,
15037                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15038                 .doit = nl80211_connect,
15039                 .flags = GENL_UNS_ADMIN_PERM,
15040                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15041                                   NL80211_FLAG_NEED_RTNL |
15042                                   NL80211_FLAG_CLEAR_SKB,
15043         },
15044         {
15045                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15046                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15047                 .doit = nl80211_update_connect_params,
15048                 .flags = GENL_ADMIN_PERM,
15049                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15050                                   NL80211_FLAG_NEED_RTNL |
15051                                   NL80211_FLAG_CLEAR_SKB,
15052         },
15053         {
15054                 .cmd = NL80211_CMD_DISCONNECT,
15055                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15056                 .doit = nl80211_disconnect,
15057                 .flags = GENL_UNS_ADMIN_PERM,
15058                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15059                                   NL80211_FLAG_NEED_RTNL,
15060         },
15061         {
15062                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15063                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15064                 .doit = nl80211_wiphy_netns,
15065                 .flags = GENL_UNS_ADMIN_PERM,
15066                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15067                                   NL80211_FLAG_NEED_RTNL,
15068         },
15069         {
15070                 .cmd = NL80211_CMD_GET_SURVEY,
15071                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15072                 .dumpit = nl80211_dump_survey,
15073         },
15074         {
15075                 .cmd = NL80211_CMD_SET_PMKSA,
15076                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15077                 .doit = nl80211_setdel_pmksa,
15078                 .flags = GENL_UNS_ADMIN_PERM,
15079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15080                                   NL80211_FLAG_NEED_RTNL |
15081                                   NL80211_FLAG_CLEAR_SKB,
15082         },
15083         {
15084                 .cmd = NL80211_CMD_DEL_PMKSA,
15085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15086                 .doit = nl80211_setdel_pmksa,
15087                 .flags = GENL_UNS_ADMIN_PERM,
15088                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15089                                   NL80211_FLAG_NEED_RTNL,
15090         },
15091         {
15092                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15094                 .doit = nl80211_flush_pmksa,
15095                 .flags = GENL_UNS_ADMIN_PERM,
15096                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15097                                   NL80211_FLAG_NEED_RTNL,
15098         },
15099         {
15100                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15101                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15102                 .doit = nl80211_remain_on_channel,
15103                 .flags = GENL_UNS_ADMIN_PERM,
15104                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15105                                   NL80211_FLAG_NEED_RTNL,
15106         },
15107         {
15108                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15109                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15110                 .doit = nl80211_cancel_remain_on_channel,
15111                 .flags = GENL_UNS_ADMIN_PERM,
15112                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15113                                   NL80211_FLAG_NEED_RTNL,
15114         },
15115         {
15116                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15117                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15118                 .doit = nl80211_set_tx_bitrate_mask,
15119                 .flags = GENL_UNS_ADMIN_PERM,
15120                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15121                                   NL80211_FLAG_NEED_RTNL,
15122         },
15123         {
15124                 .cmd = NL80211_CMD_REGISTER_FRAME,
15125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15126                 .doit = nl80211_register_mgmt,
15127                 .flags = GENL_UNS_ADMIN_PERM,
15128                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15129                                   NL80211_FLAG_NEED_RTNL,
15130         },
15131         {
15132                 .cmd = NL80211_CMD_FRAME,
15133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15134                 .doit = nl80211_tx_mgmt,
15135                 .flags = GENL_UNS_ADMIN_PERM,
15136                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15137                                   NL80211_FLAG_NEED_RTNL,
15138         },
15139         {
15140                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15141                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15142                 .doit = nl80211_tx_mgmt_cancel_wait,
15143                 .flags = GENL_UNS_ADMIN_PERM,
15144                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15145                                   NL80211_FLAG_NEED_RTNL,
15146         },
15147         {
15148                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15149                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15150                 .doit = nl80211_set_power_save,
15151                 .flags = GENL_UNS_ADMIN_PERM,
15152                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15153                                   NL80211_FLAG_NEED_RTNL,
15154         },
15155         {
15156                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15157                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15158                 .doit = nl80211_get_power_save,
15159                 /* can be retrieved by unprivileged users */
15160                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15161                                   NL80211_FLAG_NEED_RTNL,
15162         },
15163         {
15164                 .cmd = NL80211_CMD_SET_CQM,
15165                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15166                 .doit = nl80211_set_cqm,
15167                 .flags = GENL_UNS_ADMIN_PERM,
15168                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15169                                   NL80211_FLAG_NEED_RTNL,
15170         },
15171         {
15172                 .cmd = NL80211_CMD_SET_CHANNEL,
15173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15174                 .doit = nl80211_set_channel,
15175                 .flags = GENL_UNS_ADMIN_PERM,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15177                                   NL80211_FLAG_NEED_RTNL,
15178         },
15179         {
15180                 .cmd = NL80211_CMD_SET_WDS_PEER,
15181                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15182                 .doit = nl80211_set_wds_peer,
15183                 .flags = GENL_UNS_ADMIN_PERM,
15184                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15185                                   NL80211_FLAG_NEED_RTNL,
15186         },
15187         {
15188                 .cmd = NL80211_CMD_JOIN_MESH,
15189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15190                 .doit = nl80211_join_mesh,
15191                 .flags = GENL_UNS_ADMIN_PERM,
15192                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15193                                   NL80211_FLAG_NEED_RTNL,
15194         },
15195         {
15196                 .cmd = NL80211_CMD_LEAVE_MESH,
15197                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15198                 .doit = nl80211_leave_mesh,
15199                 .flags = GENL_UNS_ADMIN_PERM,
15200                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15201                                   NL80211_FLAG_NEED_RTNL,
15202         },
15203         {
15204                 .cmd = NL80211_CMD_JOIN_OCB,
15205                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15206                 .doit = nl80211_join_ocb,
15207                 .flags = GENL_UNS_ADMIN_PERM,
15208                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15209                                   NL80211_FLAG_NEED_RTNL,
15210         },
15211         {
15212                 .cmd = NL80211_CMD_LEAVE_OCB,
15213                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15214                 .doit = nl80211_leave_ocb,
15215                 .flags = GENL_UNS_ADMIN_PERM,
15216                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15217                                   NL80211_FLAG_NEED_RTNL,
15218         },
15219 #ifdef CONFIG_PM
15220         {
15221                 .cmd = NL80211_CMD_GET_WOWLAN,
15222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15223                 .doit = nl80211_get_wowlan,
15224                 /* can be retrieved by unprivileged users */
15225                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15226                                   NL80211_FLAG_NEED_RTNL,
15227         },
15228         {
15229                 .cmd = NL80211_CMD_SET_WOWLAN,
15230                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15231                 .doit = nl80211_set_wowlan,
15232                 .flags = GENL_UNS_ADMIN_PERM,
15233                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15234                                   NL80211_FLAG_NEED_RTNL,
15235         },
15236 #endif
15237         {
15238                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15239                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15240                 .doit = nl80211_set_rekey_data,
15241                 .flags = GENL_UNS_ADMIN_PERM,
15242                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15243                                   NL80211_FLAG_NEED_RTNL |
15244                                   NL80211_FLAG_CLEAR_SKB,
15245         },
15246         {
15247                 .cmd = NL80211_CMD_TDLS_MGMT,
15248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15249                 .doit = nl80211_tdls_mgmt,
15250                 .flags = GENL_UNS_ADMIN_PERM,
15251                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15252                                   NL80211_FLAG_NEED_RTNL,
15253         },
15254         {
15255                 .cmd = NL80211_CMD_TDLS_OPER,
15256                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15257                 .doit = nl80211_tdls_oper,
15258                 .flags = GENL_UNS_ADMIN_PERM,
15259                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15260                                   NL80211_FLAG_NEED_RTNL,
15261         },
15262         {
15263                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15264                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15265                 .doit = nl80211_register_unexpected_frame,
15266                 .flags = GENL_UNS_ADMIN_PERM,
15267                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15268                                   NL80211_FLAG_NEED_RTNL,
15269         },
15270         {
15271                 .cmd = NL80211_CMD_PROBE_CLIENT,
15272                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15273                 .doit = nl80211_probe_client,
15274                 .flags = GENL_UNS_ADMIN_PERM,
15275                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15276                                   NL80211_FLAG_NEED_RTNL,
15277         },
15278         {
15279                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15281                 .doit = nl80211_register_beacons,
15282                 .flags = GENL_UNS_ADMIN_PERM,
15283                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15284                                   NL80211_FLAG_NEED_RTNL,
15285         },
15286         {
15287                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15288                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15289                 .doit = nl80211_set_noack_map,
15290                 .flags = GENL_UNS_ADMIN_PERM,
15291                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15292                                   NL80211_FLAG_NEED_RTNL,
15293         },
15294         {
15295                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15296                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15297                 .doit = nl80211_start_p2p_device,
15298                 .flags = GENL_UNS_ADMIN_PERM,
15299                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15300                                   NL80211_FLAG_NEED_RTNL,
15301         },
15302         {
15303                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15305                 .doit = nl80211_stop_p2p_device,
15306                 .flags = GENL_UNS_ADMIN_PERM,
15307                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15308                                   NL80211_FLAG_NEED_RTNL,
15309         },
15310         {
15311                 .cmd = NL80211_CMD_START_NAN,
15312                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15313                 .doit = nl80211_start_nan,
15314                 .flags = GENL_ADMIN_PERM,
15315                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15316                                   NL80211_FLAG_NEED_RTNL,
15317         },
15318         {
15319                 .cmd = NL80211_CMD_STOP_NAN,
15320                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15321                 .doit = nl80211_stop_nan,
15322                 .flags = GENL_ADMIN_PERM,
15323                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15324                                   NL80211_FLAG_NEED_RTNL,
15325         },
15326         {
15327                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15328                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15329                 .doit = nl80211_nan_add_func,
15330                 .flags = GENL_ADMIN_PERM,
15331                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15332                                   NL80211_FLAG_NEED_RTNL,
15333         },
15334         {
15335                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15336                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15337                 .doit = nl80211_nan_del_func,
15338                 .flags = GENL_ADMIN_PERM,
15339                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15340                                   NL80211_FLAG_NEED_RTNL,
15341         },
15342         {
15343                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15345                 .doit = nl80211_nan_change_config,
15346                 .flags = GENL_ADMIN_PERM,
15347                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15348                                   NL80211_FLAG_NEED_RTNL,
15349         },
15350         {
15351                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15352                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15353                 .doit = nl80211_set_mcast_rate,
15354                 .flags = GENL_UNS_ADMIN_PERM,
15355                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15356                                   NL80211_FLAG_NEED_RTNL,
15357         },
15358         {
15359                 .cmd = NL80211_CMD_SET_MAC_ACL,
15360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15361                 .doit = nl80211_set_mac_acl,
15362                 .flags = GENL_UNS_ADMIN_PERM,
15363                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15364                                   NL80211_FLAG_NEED_RTNL,
15365         },
15366         {
15367                 .cmd = NL80211_CMD_RADAR_DETECT,
15368                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15369                 .doit = nl80211_start_radar_detection,
15370                 .flags = GENL_UNS_ADMIN_PERM,
15371                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15372                                   NL80211_FLAG_NEED_RTNL,
15373         },
15374         {
15375                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15376                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15377                 .doit = nl80211_get_protocol_features,
15378         },
15379         {
15380                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15382                 .doit = nl80211_update_ft_ies,
15383                 .flags = GENL_UNS_ADMIN_PERM,
15384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15385                                   NL80211_FLAG_NEED_RTNL,
15386         },
15387         {
15388                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15389                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15390                 .doit = nl80211_crit_protocol_start,
15391                 .flags = GENL_UNS_ADMIN_PERM,
15392                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15393                                   NL80211_FLAG_NEED_RTNL,
15394         },
15395         {
15396                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15397                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15398                 .doit = nl80211_crit_protocol_stop,
15399                 .flags = GENL_UNS_ADMIN_PERM,
15400                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15401                                   NL80211_FLAG_NEED_RTNL,
15402         },
15403         {
15404                 .cmd = NL80211_CMD_GET_COALESCE,
15405                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15406                 .doit = nl80211_get_coalesce,
15407                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15408                                   NL80211_FLAG_NEED_RTNL,
15409         },
15410         {
15411                 .cmd = NL80211_CMD_SET_COALESCE,
15412                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15413                 .doit = nl80211_set_coalesce,
15414                 .flags = GENL_UNS_ADMIN_PERM,
15415                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15416                                   NL80211_FLAG_NEED_RTNL,
15417         },
15418         {
15419                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15420                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15421                 .doit = nl80211_channel_switch,
15422                 .flags = GENL_UNS_ADMIN_PERM,
15423                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15424                                   NL80211_FLAG_NEED_RTNL,
15425         },
15426         {
15427                 .cmd = NL80211_CMD_VENDOR,
15428                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15429                 .doit = nl80211_vendor_cmd,
15430                 .dumpit = nl80211_vendor_cmd_dump,
15431                 .flags = GENL_UNS_ADMIN_PERM,
15432                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15433                                   NL80211_FLAG_NEED_RTNL |
15434                                   NL80211_FLAG_CLEAR_SKB,
15435         },
15436         {
15437                 .cmd = NL80211_CMD_SET_QOS_MAP,
15438                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15439                 .doit = nl80211_set_qos_map,
15440                 .flags = GENL_UNS_ADMIN_PERM,
15441                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15442                                   NL80211_FLAG_NEED_RTNL,
15443         },
15444         {
15445                 .cmd = NL80211_CMD_ADD_TX_TS,
15446                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15447                 .doit = nl80211_add_tx_ts,
15448                 .flags = GENL_UNS_ADMIN_PERM,
15449                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15450                                   NL80211_FLAG_NEED_RTNL,
15451         },
15452         {
15453                 .cmd = NL80211_CMD_DEL_TX_TS,
15454                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15455                 .doit = nl80211_del_tx_ts,
15456                 .flags = GENL_UNS_ADMIN_PERM,
15457                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15458                                   NL80211_FLAG_NEED_RTNL,
15459         },
15460         {
15461                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15462                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15463                 .doit = nl80211_tdls_channel_switch,
15464                 .flags = GENL_UNS_ADMIN_PERM,
15465                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15466                                   NL80211_FLAG_NEED_RTNL,
15467         },
15468         {
15469                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15470                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15471                 .doit = nl80211_tdls_cancel_channel_switch,
15472                 .flags = GENL_UNS_ADMIN_PERM,
15473                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15474                                   NL80211_FLAG_NEED_RTNL,
15475         },
15476         {
15477                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15478                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15479                 .doit = nl80211_set_multicast_to_unicast,
15480                 .flags = GENL_UNS_ADMIN_PERM,
15481                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15482                                   NL80211_FLAG_NEED_RTNL,
15483         },
15484         {
15485                 .cmd = NL80211_CMD_SET_PMK,
15486                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15487                 .doit = nl80211_set_pmk,
15488                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15489                                   NL80211_FLAG_NEED_RTNL |
15490                                   NL80211_FLAG_CLEAR_SKB,
15491         },
15492         {
15493                 .cmd = NL80211_CMD_DEL_PMK,
15494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15495                 .doit = nl80211_del_pmk,
15496                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15497                                   NL80211_FLAG_NEED_RTNL,
15498         },
15499         {
15500                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15501                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15502                 .doit = nl80211_external_auth,
15503                 .flags = GENL_ADMIN_PERM,
15504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15505                                   NL80211_FLAG_NEED_RTNL,
15506         },
15507         {
15508                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15510                 .doit = nl80211_tx_control_port,
15511                 .flags = GENL_UNS_ADMIN_PERM,
15512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15513                                   NL80211_FLAG_NEED_RTNL,
15514         },
15515         {
15516                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15517                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15518                 .doit = nl80211_get_ftm_responder_stats,
15519                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15520                                   NL80211_FLAG_NEED_RTNL,
15521         },
15522         {
15523                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15525                 .doit = nl80211_pmsr_start,
15526                 .flags = GENL_UNS_ADMIN_PERM,
15527                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15528                                   NL80211_FLAG_NEED_RTNL,
15529         },
15530         {
15531                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15533                 .doit = nl80211_notify_radar_detection,
15534                 .flags = GENL_UNS_ADMIN_PERM,
15535                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15536                                   NL80211_FLAG_NEED_RTNL,
15537         },
15538         {
15539                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15540                 .doit = nl80211_update_owe_info,
15541                 .flags = GENL_ADMIN_PERM,
15542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15543                                   NL80211_FLAG_NEED_RTNL,
15544         },
15545         {
15546                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15547                 .doit = nl80211_probe_mesh_link,
15548                 .flags = GENL_UNS_ADMIN_PERM,
15549                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15550                                   NL80211_FLAG_NEED_RTNL,
15551         },
15552         {
15553                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15554                 .doit = nl80211_set_tid_config,
15555                 .flags = GENL_UNS_ADMIN_PERM,
15556                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15557                                   NL80211_FLAG_NEED_RTNL,
15558         },
15559 };
15560
15561 static struct genl_family nl80211_fam __ro_after_init = {
15562         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15563         .hdrsize = 0,                   /* no private header */
15564         .version = 1,                   /* no particular meaning now */
15565         .maxattr = NL80211_ATTR_MAX,
15566         .policy = nl80211_policy,
15567         .netnsok = true,
15568         .pre_doit = nl80211_pre_doit,
15569         .post_doit = nl80211_post_doit,
15570         .module = THIS_MODULE,
15571         .ops = nl80211_ops,
15572         .n_ops = ARRAY_SIZE(nl80211_ops),
15573         .small_ops = nl80211_small_ops,
15574         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15575         .mcgrps = nl80211_mcgrps,
15576         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15577         .parallel_ops = true,
15578 };
15579
15580 /* notification functions */
15581
15582 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15583                           enum nl80211_commands cmd)
15584 {
15585         struct sk_buff *msg;
15586         struct nl80211_dump_wiphy_state state = {};
15587
15588         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15589                 cmd != NL80211_CMD_DEL_WIPHY);
15590
15591         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15592         if (!msg)
15593                 return;
15594
15595         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15596                 nlmsg_free(msg);
15597                 return;
15598         }
15599
15600         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15601                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15602 }
15603
15604 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15605                                 struct wireless_dev *wdev,
15606                                 enum nl80211_commands cmd)
15607 {
15608         struct sk_buff *msg;
15609
15610         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15611         if (!msg)
15612                 return;
15613
15614         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15615                 nlmsg_free(msg);
15616                 return;
15617         }
15618
15619         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15620                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15621 }
15622
15623 static int nl80211_add_scan_req(struct sk_buff *msg,
15624                                 struct cfg80211_registered_device *rdev)
15625 {
15626         struct cfg80211_scan_request *req = rdev->scan_req;
15627         struct nlattr *nest;
15628         int i;
15629         struct cfg80211_scan_info *info;
15630
15631         if (WARN_ON(!req))
15632                 return 0;
15633
15634         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15635         if (!nest)
15636                 goto nla_put_failure;
15637         for (i = 0; i < req->n_ssids; i++) {
15638                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15639                         goto nla_put_failure;
15640         }
15641         nla_nest_end(msg, nest);
15642
15643         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15644                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15645                 if (!nest)
15646                         goto nla_put_failure;
15647                 for (i = 0; i < req->n_channels; i++) {
15648                         if (nla_put_u32(msg, i,
15649                                    ieee80211_channel_to_khz(req->channels[i])))
15650                                 goto nla_put_failure;
15651                 }
15652                 nla_nest_end(msg, nest);
15653         } else {
15654                 nest = nla_nest_start_noflag(msg,
15655                                              NL80211_ATTR_SCAN_FREQUENCIES);
15656                 if (!nest)
15657                         goto nla_put_failure;
15658                 for (i = 0; i < req->n_channels; i++) {
15659                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15660                                 goto nla_put_failure;
15661                 }
15662                 nla_nest_end(msg, nest);
15663         }
15664
15665         if (req->ie &&
15666             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15667                 goto nla_put_failure;
15668
15669         if (req->flags &&
15670             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15671                 goto nla_put_failure;
15672
15673         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15674                 &rdev->scan_req->info;
15675         if (info->scan_start_tsf &&
15676             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15677                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15678              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15679                      info->tsf_bssid)))
15680                 goto nla_put_failure;
15681
15682         return 0;
15683  nla_put_failure:
15684         return -ENOBUFS;
15685 }
15686
15687 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15688                                  struct cfg80211_registered_device *rdev,
15689                                  struct wireless_dev *wdev,
15690                                  u32 portid, u32 seq, int flags,
15691                                  u32 cmd)
15692 {
15693         void *hdr;
15694
15695         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15696         if (!hdr)
15697                 return -1;
15698
15699         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15700             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15701                                          wdev->netdev->ifindex)) ||
15702             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15703                               NL80211_ATTR_PAD))
15704                 goto nla_put_failure;
15705
15706         /* ignore errors and send incomplete event anyway */
15707         nl80211_add_scan_req(msg, rdev);
15708
15709         genlmsg_end(msg, hdr);
15710         return 0;
15711
15712  nla_put_failure:
15713         genlmsg_cancel(msg, hdr);
15714         return -EMSGSIZE;
15715 }
15716
15717 static int
15718 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15719                             struct cfg80211_sched_scan_request *req, u32 cmd)
15720 {
15721         void *hdr;
15722
15723         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15724         if (!hdr)
15725                 return -1;
15726
15727         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15728                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15729             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15730             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15731                               NL80211_ATTR_PAD))
15732                 goto nla_put_failure;
15733
15734         genlmsg_end(msg, hdr);
15735         return 0;
15736
15737  nla_put_failure:
15738         genlmsg_cancel(msg, hdr);
15739         return -EMSGSIZE;
15740 }
15741
15742 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15743                              struct wireless_dev *wdev)
15744 {
15745         struct sk_buff *msg;
15746
15747         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15748         if (!msg)
15749                 return;
15750
15751         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15752                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15753                 nlmsg_free(msg);
15754                 return;
15755         }
15756
15757         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15758                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15759 }
15760
15761 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15762                                        struct wireless_dev *wdev, bool aborted)
15763 {
15764         struct sk_buff *msg;
15765
15766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15767         if (!msg)
15768                 return NULL;
15769
15770         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15771                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15772                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15773                 nlmsg_free(msg);
15774                 return NULL;
15775         }
15776
15777         return msg;
15778 }
15779
15780 /* send message created by nl80211_build_scan_msg() */
15781 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15782                            struct sk_buff *msg)
15783 {
15784         if (!msg)
15785                 return;
15786
15787         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15788                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15789 }
15790
15791 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15792 {
15793         struct sk_buff *msg;
15794
15795         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15796         if (!msg)
15797                 return;
15798
15799         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15800                 nlmsg_free(msg);
15801                 return;
15802         }
15803
15804         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15805                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15806 }
15807
15808 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15809                                           struct regulatory_request *request)
15810 {
15811         /* Userspace can always count this one always being set */
15812         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15813                 goto nla_put_failure;
15814
15815         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15816                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15817                                NL80211_REGDOM_TYPE_WORLD))
15818                         goto nla_put_failure;
15819         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15820                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15821                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15822                         goto nla_put_failure;
15823         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15824                    request->intersect) {
15825                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15826                                NL80211_REGDOM_TYPE_INTERSECTION))
15827                         goto nla_put_failure;
15828         } else {
15829                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15830                                NL80211_REGDOM_TYPE_COUNTRY) ||
15831                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15832                                    request->alpha2))
15833                         goto nla_put_failure;
15834         }
15835
15836         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15837                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15838
15839                 if (wiphy &&
15840                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15841                         goto nla_put_failure;
15842
15843                 if (wiphy &&
15844                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15845                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15846                         goto nla_put_failure;
15847         }
15848
15849         return true;
15850
15851 nla_put_failure:
15852         return false;
15853 }
15854
15855 /*
15856  * This can happen on global regulatory changes or device specific settings
15857  * based on custom regulatory domains.
15858  */
15859 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15860                                      struct regulatory_request *request)
15861 {
15862         struct sk_buff *msg;
15863         void *hdr;
15864
15865         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15866         if (!msg)
15867                 return;
15868
15869         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15870         if (!hdr)
15871                 goto nla_put_failure;
15872
15873         if (!nl80211_reg_change_event_fill(msg, request))
15874                 goto nla_put_failure;
15875
15876         genlmsg_end(msg, hdr);
15877
15878         rcu_read_lock();
15879         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15880                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15881         rcu_read_unlock();
15882
15883         return;
15884
15885 nla_put_failure:
15886         nlmsg_free(msg);
15887 }
15888
15889 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15890                                     struct net_device *netdev,
15891                                     const u8 *buf, size_t len,
15892                                     enum nl80211_commands cmd, gfp_t gfp,
15893                                     int uapsd_queues, const u8 *req_ies,
15894                                     size_t req_ies_len)
15895 {
15896         struct sk_buff *msg;
15897         void *hdr;
15898
15899         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15900         if (!msg)
15901                 return;
15902
15903         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15904         if (!hdr) {
15905                 nlmsg_free(msg);
15906                 return;
15907         }
15908
15909         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15910             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15911             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15912             (req_ies &&
15913              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15914                 goto nla_put_failure;
15915
15916         if (uapsd_queues >= 0) {
15917                 struct nlattr *nla_wmm =
15918                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15919                 if (!nla_wmm)
15920                         goto nla_put_failure;
15921
15922                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15923                                uapsd_queues))
15924                         goto nla_put_failure;
15925
15926                 nla_nest_end(msg, nla_wmm);
15927         }
15928
15929         genlmsg_end(msg, hdr);
15930
15931         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15932                                 NL80211_MCGRP_MLME, gfp);
15933         return;
15934
15935  nla_put_failure:
15936         nlmsg_free(msg);
15937 }
15938
15939 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15940                           struct net_device *netdev, const u8 *buf,
15941                           size_t len, gfp_t gfp)
15942 {
15943         nl80211_send_mlme_event(rdev, netdev, buf, len,
15944                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15945 }
15946
15947 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15948                            struct net_device *netdev, const u8 *buf,
15949                            size_t len, gfp_t gfp, int uapsd_queues,
15950                            const u8 *req_ies, size_t req_ies_len)
15951 {
15952         nl80211_send_mlme_event(rdev, netdev, buf, len,
15953                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15954                                 req_ies, req_ies_len);
15955 }
15956
15957 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15958                          struct net_device *netdev, const u8 *buf,
15959                          size_t len, gfp_t gfp)
15960 {
15961         nl80211_send_mlme_event(rdev, netdev, buf, len,
15962                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15963 }
15964
15965 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15966                            struct net_device *netdev, const u8 *buf,
15967                            size_t len, gfp_t gfp)
15968 {
15969         nl80211_send_mlme_event(rdev, netdev, buf, len,
15970                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15971 }
15972
15973 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15974                                   size_t len)
15975 {
15976         struct wireless_dev *wdev = dev->ieee80211_ptr;
15977         struct wiphy *wiphy = wdev->wiphy;
15978         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15979         const struct ieee80211_mgmt *mgmt = (void *)buf;
15980         u32 cmd;
15981
15982         if (WARN_ON(len < 2))
15983                 return;
15984
15985         if (ieee80211_is_deauth(mgmt->frame_control)) {
15986                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15987         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15988                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15989         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15990                 if (wdev->unprot_beacon_reported &&
15991                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15992                         return;
15993                 cmd = NL80211_CMD_UNPROT_BEACON;
15994                 wdev->unprot_beacon_reported = jiffies;
15995         } else {
15996                 return;
15997         }
15998
15999         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16000         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16001                                 NULL, 0);
16002 }
16003 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16004
16005 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16006                                       struct net_device *netdev, int cmd,
16007                                       const u8 *addr, gfp_t gfp)
16008 {
16009         struct sk_buff *msg;
16010         void *hdr;
16011
16012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16013         if (!msg)
16014                 return;
16015
16016         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16017         if (!hdr) {
16018                 nlmsg_free(msg);
16019                 return;
16020         }
16021
16022         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16023             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16024             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16025             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16026                 goto nla_put_failure;
16027
16028         genlmsg_end(msg, hdr);
16029
16030         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16031                                 NL80211_MCGRP_MLME, gfp);
16032         return;
16033
16034  nla_put_failure:
16035         nlmsg_free(msg);
16036 }
16037
16038 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16039                                struct net_device *netdev, const u8 *addr,
16040                                gfp_t gfp)
16041 {
16042         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16043                                   addr, gfp);
16044 }
16045
16046 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16047                                 struct net_device *netdev, const u8 *addr,
16048                                 gfp_t gfp)
16049 {
16050         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16051                                   addr, gfp);
16052 }
16053
16054 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16055                                  struct net_device *netdev,
16056                                  struct cfg80211_connect_resp_params *cr,
16057                                  gfp_t gfp)
16058 {
16059         struct sk_buff *msg;
16060         void *hdr;
16061
16062         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16063                         cr->fils.kek_len + cr->fils.pmk_len +
16064                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16065         if (!msg)
16066                 return;
16067
16068         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16069         if (!hdr) {
16070                 nlmsg_free(msg);
16071                 return;
16072         }
16073
16074         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16075             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16076             (cr->bssid &&
16077              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16078             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16079                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16080                         cr->status) ||
16081             (cr->status < 0 &&
16082              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16083               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16084                           cr->timeout_reason))) ||
16085             (cr->req_ie &&
16086              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16087             (cr->resp_ie &&
16088              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16089                      cr->resp_ie)) ||
16090             (cr->fils.update_erp_next_seq_num &&
16091              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16092                          cr->fils.erp_next_seq_num)) ||
16093             (cr->status == WLAN_STATUS_SUCCESS &&
16094              ((cr->fils.kek &&
16095                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16096                        cr->fils.kek)) ||
16097               (cr->fils.pmk &&
16098                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16099               (cr->fils.pmkid &&
16100                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16101                 goto nla_put_failure;
16102
16103         genlmsg_end(msg, hdr);
16104
16105         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16106                                 NL80211_MCGRP_MLME, gfp);
16107         return;
16108
16109  nla_put_failure:
16110         nlmsg_free(msg);
16111 }
16112
16113 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16114                          struct net_device *netdev,
16115                          struct cfg80211_roam_info *info, gfp_t gfp)
16116 {
16117         struct sk_buff *msg;
16118         void *hdr;
16119         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16120
16121         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16122                         info->fils.kek_len + info->fils.pmk_len +
16123                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16124         if (!msg)
16125                 return;
16126
16127         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16128         if (!hdr) {
16129                 nlmsg_free(msg);
16130                 return;
16131         }
16132
16133         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16134             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16135             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16136             (info->req_ie &&
16137              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16138                      info->req_ie)) ||
16139             (info->resp_ie &&
16140              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16141                      info->resp_ie)) ||
16142             (info->fils.update_erp_next_seq_num &&
16143              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16144                          info->fils.erp_next_seq_num)) ||
16145             (info->fils.kek &&
16146              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16147                      info->fils.kek)) ||
16148             (info->fils.pmk &&
16149              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16150             (info->fils.pmkid &&
16151              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16152                 goto nla_put_failure;
16153
16154         genlmsg_end(msg, hdr);
16155
16156         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16157                                 NL80211_MCGRP_MLME, gfp);
16158         return;
16159
16160  nla_put_failure:
16161         nlmsg_free(msg);
16162 }
16163
16164 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16165                                   struct net_device *netdev, const u8 *bssid)
16166 {
16167         struct sk_buff *msg;
16168         void *hdr;
16169
16170         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16171         if (!msg)
16172                 return;
16173
16174         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16175         if (!hdr) {
16176                 nlmsg_free(msg);
16177                 return;
16178         }
16179
16180         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16181             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16182             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16183                 goto nla_put_failure;
16184
16185         genlmsg_end(msg, hdr);
16186
16187         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16188                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16189         return;
16190
16191  nla_put_failure:
16192         nlmsg_free(msg);
16193 }
16194
16195 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16196                                struct net_device *netdev, u16 reason,
16197                                const u8 *ie, size_t ie_len, bool from_ap)
16198 {
16199         struct sk_buff *msg;
16200         void *hdr;
16201
16202         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16203         if (!msg)
16204                 return;
16205
16206         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16207         if (!hdr) {
16208                 nlmsg_free(msg);
16209                 return;
16210         }
16211
16212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16213             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16214             (reason &&
16215              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16216             (from_ap &&
16217              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16218             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16219                 goto nla_put_failure;
16220
16221         genlmsg_end(msg, hdr);
16222
16223         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16224                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16225         return;
16226
16227  nla_put_failure:
16228         nlmsg_free(msg);
16229 }
16230
16231 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16232                              struct net_device *netdev, const u8 *bssid,
16233                              gfp_t gfp)
16234 {
16235         struct sk_buff *msg;
16236         void *hdr;
16237
16238         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16239         if (!msg)
16240                 return;
16241
16242         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16243         if (!hdr) {
16244                 nlmsg_free(msg);
16245                 return;
16246         }
16247
16248         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16249             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16250             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16251                 goto nla_put_failure;
16252
16253         genlmsg_end(msg, hdr);
16254
16255         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16256                                 NL80211_MCGRP_MLME, gfp);
16257         return;
16258
16259  nla_put_failure:
16260         nlmsg_free(msg);
16261 }
16262
16263 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16264                                         const u8 *ie, u8 ie_len,
16265                                         int sig_dbm, gfp_t gfp)
16266 {
16267         struct wireless_dev *wdev = dev->ieee80211_ptr;
16268         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16269         struct sk_buff *msg;
16270         void *hdr;
16271
16272         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16273                 return;
16274
16275         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16276
16277         msg = nlmsg_new(100 + ie_len, gfp);
16278         if (!msg)
16279                 return;
16280
16281         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16282         if (!hdr) {
16283                 nlmsg_free(msg);
16284                 return;
16285         }
16286
16287         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16288             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16289             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16290             (ie_len && ie &&
16291              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16292             (sig_dbm &&
16293              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16294                 goto nla_put_failure;
16295
16296         genlmsg_end(msg, hdr);
16297
16298         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16299                                 NL80211_MCGRP_MLME, gfp);
16300         return;
16301
16302  nla_put_failure:
16303         nlmsg_free(msg);
16304 }
16305 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16306
16307 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16308                                  struct net_device *netdev, const u8 *addr,
16309                                  enum nl80211_key_type key_type, int key_id,
16310                                  const u8 *tsc, gfp_t gfp)
16311 {
16312         struct sk_buff *msg;
16313         void *hdr;
16314
16315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16316         if (!msg)
16317                 return;
16318
16319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16320         if (!hdr) {
16321                 nlmsg_free(msg);
16322                 return;
16323         }
16324
16325         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16326             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16327             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16328             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16329             (key_id != -1 &&
16330              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16331             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16332                 goto nla_put_failure;
16333
16334         genlmsg_end(msg, hdr);
16335
16336         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16337                                 NL80211_MCGRP_MLME, gfp);
16338         return;
16339
16340  nla_put_failure:
16341         nlmsg_free(msg);
16342 }
16343
16344 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16345                                     struct ieee80211_channel *channel_before,
16346                                     struct ieee80211_channel *channel_after)
16347 {
16348         struct sk_buff *msg;
16349         void *hdr;
16350         struct nlattr *nl_freq;
16351
16352         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16353         if (!msg)
16354                 return;
16355
16356         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16357         if (!hdr) {
16358                 nlmsg_free(msg);
16359                 return;
16360         }
16361
16362         /*
16363          * Since we are applying the beacon hint to a wiphy we know its
16364          * wiphy_idx is valid
16365          */
16366         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16367                 goto nla_put_failure;
16368
16369         /* Before */
16370         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16371         if (!nl_freq)
16372                 goto nla_put_failure;
16373
16374         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16375                 goto nla_put_failure;
16376         nla_nest_end(msg, nl_freq);
16377
16378         /* After */
16379         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16380         if (!nl_freq)
16381                 goto nla_put_failure;
16382
16383         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16384                 goto nla_put_failure;
16385         nla_nest_end(msg, nl_freq);
16386
16387         genlmsg_end(msg, hdr);
16388
16389         rcu_read_lock();
16390         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16391                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16392         rcu_read_unlock();
16393
16394         return;
16395
16396 nla_put_failure:
16397         nlmsg_free(msg);
16398 }
16399
16400 static void nl80211_send_remain_on_chan_event(
16401         int cmd, struct cfg80211_registered_device *rdev,
16402         struct wireless_dev *wdev, u64 cookie,
16403         struct ieee80211_channel *chan,
16404         unsigned int duration, gfp_t gfp)
16405 {
16406         struct sk_buff *msg;
16407         void *hdr;
16408
16409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16410         if (!msg)
16411                 return;
16412
16413         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16414         if (!hdr) {
16415                 nlmsg_free(msg);
16416                 return;
16417         }
16418
16419         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16420             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16421                                          wdev->netdev->ifindex)) ||
16422             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16423                               NL80211_ATTR_PAD) ||
16424             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16425             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16426                         NL80211_CHAN_NO_HT) ||
16427             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16428                               NL80211_ATTR_PAD))
16429                 goto nla_put_failure;
16430
16431         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16432             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16433                 goto nla_put_failure;
16434
16435         genlmsg_end(msg, hdr);
16436
16437         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16438                                 NL80211_MCGRP_MLME, gfp);
16439         return;
16440
16441  nla_put_failure:
16442         nlmsg_free(msg);
16443 }
16444
16445 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16446                                struct ieee80211_channel *chan,
16447                                unsigned int duration, gfp_t gfp)
16448 {
16449         struct wiphy *wiphy = wdev->wiphy;
16450         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16451
16452         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16453         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16454                                           rdev, wdev, cookie, chan,
16455                                           duration, gfp);
16456 }
16457 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16458
16459 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16460                                         struct ieee80211_channel *chan,
16461                                         gfp_t gfp)
16462 {
16463         struct wiphy *wiphy = wdev->wiphy;
16464         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16465
16466         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16467         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16468                                           rdev, wdev, cookie, chan, 0, gfp);
16469 }
16470 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16471
16472 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16473                                         struct ieee80211_channel *chan,
16474                                         gfp_t gfp)
16475 {
16476         struct wiphy *wiphy = wdev->wiphy;
16477         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16478
16479         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16480         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16481                                           rdev, wdev, cookie, chan, 0, gfp);
16482 }
16483 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16484
16485 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16486                       struct station_info *sinfo, gfp_t gfp)
16487 {
16488         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16489         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16490         struct sk_buff *msg;
16491
16492         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16493
16494         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16495         if (!msg)
16496                 return;
16497
16498         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16499                                  rdev, dev, mac_addr, sinfo) < 0) {
16500                 nlmsg_free(msg);
16501                 return;
16502         }
16503
16504         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16505                                 NL80211_MCGRP_MLME, gfp);
16506 }
16507 EXPORT_SYMBOL(cfg80211_new_sta);
16508
16509 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16510                             struct station_info *sinfo, gfp_t gfp)
16511 {
16512         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16513         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16514         struct sk_buff *msg;
16515         struct station_info empty_sinfo = {};
16516
16517         if (!sinfo)
16518                 sinfo = &empty_sinfo;
16519
16520         trace_cfg80211_del_sta(dev, mac_addr);
16521
16522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16523         if (!msg) {
16524                 cfg80211_sinfo_release_content(sinfo);
16525                 return;
16526         }
16527
16528         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16529                                  rdev, dev, mac_addr, sinfo) < 0) {
16530                 nlmsg_free(msg);
16531                 return;
16532         }
16533
16534         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16535                                 NL80211_MCGRP_MLME, gfp);
16536 }
16537 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16538
16539 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16540                           enum nl80211_connect_failed_reason reason,
16541                           gfp_t gfp)
16542 {
16543         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16544         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16545         struct sk_buff *msg;
16546         void *hdr;
16547
16548         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16549         if (!msg)
16550                 return;
16551
16552         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16553         if (!hdr) {
16554                 nlmsg_free(msg);
16555                 return;
16556         }
16557
16558         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16559             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16560             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16561                 goto nla_put_failure;
16562
16563         genlmsg_end(msg, hdr);
16564
16565         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16566                                 NL80211_MCGRP_MLME, gfp);
16567         return;
16568
16569  nla_put_failure:
16570         nlmsg_free(msg);
16571 }
16572 EXPORT_SYMBOL(cfg80211_conn_failed);
16573
16574 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16575                                        const u8 *addr, gfp_t gfp)
16576 {
16577         struct wireless_dev *wdev = dev->ieee80211_ptr;
16578         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16579         struct sk_buff *msg;
16580         void *hdr;
16581         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16582
16583         if (!nlportid)
16584                 return false;
16585
16586         msg = nlmsg_new(100, gfp);
16587         if (!msg)
16588                 return true;
16589
16590         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16591         if (!hdr) {
16592                 nlmsg_free(msg);
16593                 return true;
16594         }
16595
16596         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16597             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16598             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16599                 goto nla_put_failure;
16600
16601         genlmsg_end(msg, hdr);
16602         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16603         return true;
16604
16605  nla_put_failure:
16606         nlmsg_free(msg);
16607         return true;
16608 }
16609
16610 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16611                                 const u8 *addr, gfp_t gfp)
16612 {
16613         struct wireless_dev *wdev = dev->ieee80211_ptr;
16614         bool ret;
16615
16616         trace_cfg80211_rx_spurious_frame(dev, addr);
16617
16618         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16619                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16620                 trace_cfg80211_return_bool(false);
16621                 return false;
16622         }
16623         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16624                                          addr, gfp);
16625         trace_cfg80211_return_bool(ret);
16626         return ret;
16627 }
16628 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16629
16630 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16631                                         const u8 *addr, gfp_t gfp)
16632 {
16633         struct wireless_dev *wdev = dev->ieee80211_ptr;
16634         bool ret;
16635
16636         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16637
16638         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16639                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16640                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16641                 trace_cfg80211_return_bool(false);
16642                 return false;
16643         }
16644         ret = __nl80211_unexpected_frame(dev,
16645                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16646                                          addr, gfp);
16647         trace_cfg80211_return_bool(ret);
16648         return ret;
16649 }
16650 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16651
16652 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16653                       struct wireless_dev *wdev, u32 nlportid,
16654                       int freq, int sig_dbm,
16655                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16656 {
16657         struct net_device *netdev = wdev->netdev;
16658         struct sk_buff *msg;
16659         void *hdr;
16660
16661         msg = nlmsg_new(100 + len, gfp);
16662         if (!msg)
16663                 return -ENOMEM;
16664
16665         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16666         if (!hdr) {
16667                 nlmsg_free(msg);
16668                 return -ENOMEM;
16669         }
16670
16671         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16672             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16673                                         netdev->ifindex)) ||
16674             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16675                               NL80211_ATTR_PAD) ||
16676             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16677             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16678             (sig_dbm &&
16679              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16680             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16681             (flags &&
16682              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16683                 goto nla_put_failure;
16684
16685         genlmsg_end(msg, hdr);
16686
16687         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16688
16689  nla_put_failure:
16690         nlmsg_free(msg);
16691         return -ENOBUFS;
16692 }
16693
16694 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16695                                     const u8 *buf, size_t len, bool ack,
16696                                     gfp_t gfp, enum nl80211_commands command)
16697 {
16698         struct wiphy *wiphy = wdev->wiphy;
16699         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16700         struct net_device *netdev = wdev->netdev;
16701         struct sk_buff *msg;
16702         void *hdr;
16703
16704         if (command == NL80211_CMD_FRAME_TX_STATUS)
16705                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16706         else
16707                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16708
16709         msg = nlmsg_new(100 + len, gfp);
16710         if (!msg)
16711                 return;
16712
16713         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16714         if (!hdr) {
16715                 nlmsg_free(msg);
16716                 return;
16717         }
16718
16719         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16720             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16721                                    netdev->ifindex)) ||
16722             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16723                               NL80211_ATTR_PAD) ||
16724             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16725             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16726                               NL80211_ATTR_PAD) ||
16727             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16728                 goto nla_put_failure;
16729
16730         genlmsg_end(msg, hdr);
16731
16732         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16733                                 NL80211_MCGRP_MLME, gfp);
16734         return;
16735
16736 nla_put_failure:
16737         nlmsg_free(msg);
16738 }
16739
16740 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16741                                      const u8 *buf, size_t len, bool ack,
16742                                      gfp_t gfp)
16743 {
16744         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16745                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16746 }
16747 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16748
16749 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16750                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16751 {
16752         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16753                                 NL80211_CMD_FRAME_TX_STATUS);
16754 }
16755 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16756
16757 static int __nl80211_rx_control_port(struct net_device *dev,
16758                                      struct sk_buff *skb,
16759                                      bool unencrypted, gfp_t gfp)
16760 {
16761         struct wireless_dev *wdev = dev->ieee80211_ptr;
16762         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16763         struct ethhdr *ehdr = eth_hdr(skb);
16764         const u8 *addr = ehdr->h_source;
16765         u16 proto = be16_to_cpu(skb->protocol);
16766         struct sk_buff *msg;
16767         void *hdr;
16768         struct nlattr *frame;
16769
16770         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16771
16772         if (!nlportid)
16773                 return -ENOENT;
16774
16775         msg = nlmsg_new(100 + skb->len, gfp);
16776         if (!msg)
16777                 return -ENOMEM;
16778
16779         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16780         if (!hdr) {
16781                 nlmsg_free(msg);
16782                 return -ENOBUFS;
16783         }
16784
16785         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16786             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16787             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16788                               NL80211_ATTR_PAD) ||
16789             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16790             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16791             (unencrypted && nla_put_flag(msg,
16792                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16793                 goto nla_put_failure;
16794
16795         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16796         if (!frame)
16797                 goto nla_put_failure;
16798
16799         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16800         genlmsg_end(msg, hdr);
16801
16802         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16803
16804  nla_put_failure:
16805         nlmsg_free(msg);
16806         return -ENOBUFS;
16807 }
16808
16809 bool cfg80211_rx_control_port(struct net_device *dev,
16810                               struct sk_buff *skb, bool unencrypted)
16811 {
16812         int ret;
16813
16814         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16815         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16816         trace_cfg80211_return_bool(ret == 0);
16817         return ret == 0;
16818 }
16819 EXPORT_SYMBOL(cfg80211_rx_control_port);
16820
16821 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16822                                             const char *mac, gfp_t gfp)
16823 {
16824         struct wireless_dev *wdev = dev->ieee80211_ptr;
16825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16826         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16827         void **cb;
16828
16829         if (!msg)
16830                 return NULL;
16831
16832         cb = (void **)msg->cb;
16833
16834         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16835         if (!cb[0]) {
16836                 nlmsg_free(msg);
16837                 return NULL;
16838         }
16839
16840         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16841             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16842                 goto nla_put_failure;
16843
16844         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16845                 goto nla_put_failure;
16846
16847         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16848         if (!cb[1])
16849                 goto nla_put_failure;
16850
16851         cb[2] = rdev;
16852
16853         return msg;
16854  nla_put_failure:
16855         nlmsg_free(msg);
16856         return NULL;
16857 }
16858
16859 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16860 {
16861         void **cb = (void **)msg->cb;
16862         struct cfg80211_registered_device *rdev = cb[2];
16863
16864         nla_nest_end(msg, cb[1]);
16865         genlmsg_end(msg, cb[0]);
16866
16867         memset(msg->cb, 0, sizeof(msg->cb));
16868
16869         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16870                                 NL80211_MCGRP_MLME, gfp);
16871 }
16872
16873 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16874                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16875                               s32 rssi_level, gfp_t gfp)
16876 {
16877         struct sk_buff *msg;
16878         struct wireless_dev *wdev = dev->ieee80211_ptr;
16879         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16880
16881         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16882
16883         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16884                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16885                 return;
16886
16887         if (wdev->cqm_config) {
16888                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16889
16890                 cfg80211_cqm_rssi_update(rdev, dev);
16891
16892                 if (rssi_level == 0)
16893                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16894         }
16895
16896         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16897         if (!msg)
16898                 return;
16899
16900         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16901                         rssi_event))
16902                 goto nla_put_failure;
16903
16904         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16905                                       rssi_level))
16906                 goto nla_put_failure;
16907
16908         cfg80211_send_cqm(msg, gfp);
16909
16910         return;
16911
16912  nla_put_failure:
16913         nlmsg_free(msg);
16914 }
16915 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16916
16917 void cfg80211_cqm_txe_notify(struct net_device *dev,
16918                              const u8 *peer, u32 num_packets,
16919                              u32 rate, u32 intvl, gfp_t gfp)
16920 {
16921         struct sk_buff *msg;
16922
16923         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16924         if (!msg)
16925                 return;
16926
16927         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16928                 goto nla_put_failure;
16929
16930         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16931                 goto nla_put_failure;
16932
16933         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16934                 goto nla_put_failure;
16935
16936         cfg80211_send_cqm(msg, gfp);
16937         return;
16938
16939  nla_put_failure:
16940         nlmsg_free(msg);
16941 }
16942 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16943
16944 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16945                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16946 {
16947         struct sk_buff *msg;
16948
16949         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16950
16951         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16952         if (!msg)
16953                 return;
16954
16955         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16956                 goto nla_put_failure;
16957
16958         cfg80211_send_cqm(msg, gfp);
16959         return;
16960
16961  nla_put_failure:
16962         nlmsg_free(msg);
16963 }
16964 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16965
16966 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16967 {
16968         struct sk_buff *msg;
16969
16970         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16971         if (!msg)
16972                 return;
16973
16974         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16975                 goto nla_put_failure;
16976
16977         cfg80211_send_cqm(msg, gfp);
16978         return;
16979
16980  nla_put_failure:
16981         nlmsg_free(msg);
16982 }
16983 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16984
16985 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16986                                      struct net_device *netdev, const u8 *bssid,
16987                                      const u8 *replay_ctr, gfp_t gfp)
16988 {
16989         struct sk_buff *msg;
16990         struct nlattr *rekey_attr;
16991         void *hdr;
16992
16993         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16994         if (!msg)
16995                 return;
16996
16997         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16998         if (!hdr) {
16999                 nlmsg_free(msg);
17000                 return;
17001         }
17002
17003         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17004             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17005             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17006                 goto nla_put_failure;
17007
17008         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17009         if (!rekey_attr)
17010                 goto nla_put_failure;
17011
17012         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17013                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17014                 goto nla_put_failure;
17015
17016         nla_nest_end(msg, rekey_attr);
17017
17018         genlmsg_end(msg, hdr);
17019
17020         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17021                                 NL80211_MCGRP_MLME, gfp);
17022         return;
17023
17024  nla_put_failure:
17025         nlmsg_free(msg);
17026 }
17027
17028 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17029                                const u8 *replay_ctr, gfp_t gfp)
17030 {
17031         struct wireless_dev *wdev = dev->ieee80211_ptr;
17032         struct wiphy *wiphy = wdev->wiphy;
17033         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17034
17035         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17036         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17037 }
17038 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17039
17040 static void
17041 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17042                                struct net_device *netdev, int index,
17043                                const u8 *bssid, bool preauth, gfp_t gfp)
17044 {
17045         struct sk_buff *msg;
17046         struct nlattr *attr;
17047         void *hdr;
17048
17049         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17050         if (!msg)
17051                 return;
17052
17053         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17054         if (!hdr) {
17055                 nlmsg_free(msg);
17056                 return;
17057         }
17058
17059         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17060             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17061                 goto nla_put_failure;
17062
17063         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17064         if (!attr)
17065                 goto nla_put_failure;
17066
17067         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17068             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17069             (preauth &&
17070              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17071                 goto nla_put_failure;
17072
17073         nla_nest_end(msg, attr);
17074
17075         genlmsg_end(msg, hdr);
17076
17077         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17078                                 NL80211_MCGRP_MLME, gfp);
17079         return;
17080
17081  nla_put_failure:
17082         nlmsg_free(msg);
17083 }
17084
17085 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17086                                      const u8 *bssid, bool preauth, gfp_t gfp)
17087 {
17088         struct wireless_dev *wdev = dev->ieee80211_ptr;
17089         struct wiphy *wiphy = wdev->wiphy;
17090         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17091
17092         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17093         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17094 }
17095 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17096
17097 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17098                                      struct net_device *netdev,
17099                                      struct cfg80211_chan_def *chandef,
17100                                      gfp_t gfp,
17101                                      enum nl80211_commands notif,
17102                                      u8 count)
17103 {
17104         struct sk_buff *msg;
17105         void *hdr;
17106
17107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17108         if (!msg)
17109                 return;
17110
17111         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17112         if (!hdr) {
17113                 nlmsg_free(msg);
17114                 return;
17115         }
17116
17117         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17118                 goto nla_put_failure;
17119
17120         if (nl80211_send_chandef(msg, chandef))
17121                 goto nla_put_failure;
17122
17123         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17124             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17125                         goto nla_put_failure;
17126
17127         genlmsg_end(msg, hdr);
17128
17129         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17130                                 NL80211_MCGRP_MLME, gfp);
17131         return;
17132
17133  nla_put_failure:
17134         nlmsg_free(msg);
17135 }
17136
17137 void cfg80211_ch_switch_notify(struct net_device *dev,
17138                                struct cfg80211_chan_def *chandef)
17139 {
17140         struct wireless_dev *wdev = dev->ieee80211_ptr;
17141         struct wiphy *wiphy = wdev->wiphy;
17142         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17143
17144         ASSERT_WDEV_LOCK(wdev);
17145
17146         trace_cfg80211_ch_switch_notify(dev, chandef);
17147
17148         wdev->chandef = *chandef;
17149         wdev->preset_chandef = *chandef;
17150
17151         if ((wdev->iftype == NL80211_IFTYPE_STATION ||
17152              wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
17153             !WARN_ON(!wdev->current_bss))
17154                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17155
17156         cfg80211_sched_dfs_chan_update(rdev);
17157
17158         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17159                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17160 }
17161 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17162
17163 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17164                                        struct cfg80211_chan_def *chandef,
17165                                        u8 count)
17166 {
17167         struct wireless_dev *wdev = dev->ieee80211_ptr;
17168         struct wiphy *wiphy = wdev->wiphy;
17169         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17170
17171         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17172
17173         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17174                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17175 }
17176 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17177
17178 void
17179 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17180                      const struct cfg80211_chan_def *chandef,
17181                      enum nl80211_radar_event event,
17182                      struct net_device *netdev, gfp_t gfp)
17183 {
17184         struct sk_buff *msg;
17185         void *hdr;
17186
17187         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17188         if (!msg)
17189                 return;
17190
17191         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17192         if (!hdr) {
17193                 nlmsg_free(msg);
17194                 return;
17195         }
17196
17197         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17198                 goto nla_put_failure;
17199
17200         /* NOP and radar events don't need a netdev parameter */
17201         if (netdev) {
17202                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17203
17204                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17205                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17206                                       NL80211_ATTR_PAD))
17207                         goto nla_put_failure;
17208         }
17209
17210         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17211                 goto nla_put_failure;
17212
17213         if (nl80211_send_chandef(msg, chandef))
17214                 goto nla_put_failure;
17215
17216         genlmsg_end(msg, hdr);
17217
17218         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17219                                 NL80211_MCGRP_MLME, gfp);
17220         return;
17221
17222  nla_put_failure:
17223         nlmsg_free(msg);
17224 }
17225
17226 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17227                                        struct sta_opmode_info *sta_opmode,
17228                                        gfp_t gfp)
17229 {
17230         struct sk_buff *msg;
17231         struct wireless_dev *wdev = dev->ieee80211_ptr;
17232         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17233         void *hdr;
17234
17235         if (WARN_ON(!mac))
17236                 return;
17237
17238         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17239         if (!msg)
17240                 return;
17241
17242         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17243         if (!hdr) {
17244                 nlmsg_free(msg);
17245                 return;
17246         }
17247
17248         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17249                 goto nla_put_failure;
17250
17251         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17252                 goto nla_put_failure;
17253
17254         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17255                 goto nla_put_failure;
17256
17257         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17258             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17259                 goto nla_put_failure;
17260
17261         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17262             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17263                 goto nla_put_failure;
17264
17265         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17266             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17267                 goto nla_put_failure;
17268
17269         genlmsg_end(msg, hdr);
17270
17271         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17272                                 NL80211_MCGRP_MLME, gfp);
17273
17274         return;
17275
17276 nla_put_failure:
17277         nlmsg_free(msg);
17278 }
17279 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17280
17281 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17282                            u64 cookie, bool acked, s32 ack_signal,
17283                            bool is_valid_ack_signal, gfp_t gfp)
17284 {
17285         struct wireless_dev *wdev = dev->ieee80211_ptr;
17286         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17287         struct sk_buff *msg;
17288         void *hdr;
17289
17290         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17291
17292         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17293
17294         if (!msg)
17295                 return;
17296
17297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17298         if (!hdr) {
17299                 nlmsg_free(msg);
17300                 return;
17301         }
17302
17303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17305             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17306             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17307                               NL80211_ATTR_PAD) ||
17308             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17309             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17310                                                 ack_signal)))
17311                 goto nla_put_failure;
17312
17313         genlmsg_end(msg, hdr);
17314
17315         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17316                                 NL80211_MCGRP_MLME, gfp);
17317         return;
17318
17319  nla_put_failure:
17320         nlmsg_free(msg);
17321 }
17322 EXPORT_SYMBOL(cfg80211_probe_status);
17323
17324 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17325                                      size_t len, int freq, int sig_dbm)
17326 {
17327         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17328         struct sk_buff *msg;
17329         void *hdr;
17330         struct cfg80211_beacon_registration *reg;
17331
17332         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17333
17334         spin_lock_bh(&rdev->beacon_registrations_lock);
17335         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17336                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17337                 if (!msg) {
17338                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17339                         return;
17340                 }
17341
17342                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17343                 if (!hdr)
17344                         goto nla_put_failure;
17345
17346                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17347                     (freq &&
17348                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17349                                   KHZ_TO_MHZ(freq)) ||
17350                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17351                                   freq % 1000))) ||
17352                     (sig_dbm &&
17353                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17354                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17355                         goto nla_put_failure;
17356
17357                 genlmsg_end(msg, hdr);
17358
17359                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17360         }
17361         spin_unlock_bh(&rdev->beacon_registrations_lock);
17362         return;
17363
17364  nla_put_failure:
17365         spin_unlock_bh(&rdev->beacon_registrations_lock);
17366         nlmsg_free(msg);
17367 }
17368 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17369
17370 #ifdef CONFIG_PM
17371 static int cfg80211_net_detect_results(struct sk_buff *msg,
17372                                        struct cfg80211_wowlan_wakeup *wakeup)
17373 {
17374         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17375         struct nlattr *nl_results, *nl_match, *nl_freqs;
17376         int i, j;
17377
17378         nl_results = nla_nest_start_noflag(msg,
17379                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17380         if (!nl_results)
17381                 return -EMSGSIZE;
17382
17383         for (i = 0; i < nd->n_matches; i++) {
17384                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17385
17386                 nl_match = nla_nest_start_noflag(msg, i);
17387                 if (!nl_match)
17388                         break;
17389
17390                 /* The SSID attribute is optional in nl80211, but for
17391                  * simplicity reasons it's always present in the
17392                  * cfg80211 structure.  If a driver can't pass the
17393                  * SSID, that needs to be changed.  A zero length SSID
17394                  * is still a valid SSID (wildcard), so it cannot be
17395                  * used for this purpose.
17396                  */
17397                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17398                             match->ssid.ssid)) {
17399                         nla_nest_cancel(msg, nl_match);
17400                         goto out;
17401                 }
17402
17403                 if (match->n_channels) {
17404                         nl_freqs = nla_nest_start_noflag(msg,
17405                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17406                         if (!nl_freqs) {
17407                                 nla_nest_cancel(msg, nl_match);
17408                                 goto out;
17409                         }
17410
17411                         for (j = 0; j < match->n_channels; j++) {
17412                                 if (nla_put_u32(msg, j, match->channels[j])) {
17413                                         nla_nest_cancel(msg, nl_freqs);
17414                                         nla_nest_cancel(msg, nl_match);
17415                                         goto out;
17416                                 }
17417                         }
17418
17419                         nla_nest_end(msg, nl_freqs);
17420                 }
17421
17422                 nla_nest_end(msg, nl_match);
17423         }
17424
17425 out:
17426         nla_nest_end(msg, nl_results);
17427         return 0;
17428 }
17429
17430 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17431                                    struct cfg80211_wowlan_wakeup *wakeup,
17432                                    gfp_t gfp)
17433 {
17434         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17435         struct sk_buff *msg;
17436         void *hdr;
17437         int size = 200;
17438
17439         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17440
17441         if (wakeup)
17442                 size += wakeup->packet_present_len;
17443
17444         msg = nlmsg_new(size, gfp);
17445         if (!msg)
17446                 return;
17447
17448         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17449         if (!hdr)
17450                 goto free_msg;
17451
17452         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17453             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17454                               NL80211_ATTR_PAD))
17455                 goto free_msg;
17456
17457         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17458                                         wdev->netdev->ifindex))
17459                 goto free_msg;
17460
17461         if (wakeup) {
17462                 struct nlattr *reasons;
17463
17464                 reasons = nla_nest_start_noflag(msg,
17465                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17466                 if (!reasons)
17467                         goto free_msg;
17468
17469                 if (wakeup->disconnect &&
17470                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17471                         goto free_msg;
17472                 if (wakeup->magic_pkt &&
17473                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17474                         goto free_msg;
17475                 if (wakeup->gtk_rekey_failure &&
17476                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17477                         goto free_msg;
17478                 if (wakeup->eap_identity_req &&
17479                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17480                         goto free_msg;
17481                 if (wakeup->four_way_handshake &&
17482                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17483                         goto free_msg;
17484                 if (wakeup->rfkill_release &&
17485                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17486                         goto free_msg;
17487
17488                 if (wakeup->pattern_idx >= 0 &&
17489                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17490                                 wakeup->pattern_idx))
17491                         goto free_msg;
17492
17493                 if (wakeup->tcp_match &&
17494                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17495                         goto free_msg;
17496
17497                 if (wakeup->tcp_connlost &&
17498                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17499                         goto free_msg;
17500
17501                 if (wakeup->tcp_nomoretokens &&
17502                     nla_put_flag(msg,
17503                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17504                         goto free_msg;
17505
17506                 if (wakeup->packet) {
17507                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17508                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17509
17510                         if (!wakeup->packet_80211) {
17511                                 pkt_attr =
17512                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17513                                 len_attr =
17514                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17515                         }
17516
17517                         if (wakeup->packet_len &&
17518                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17519                                 goto free_msg;
17520
17521                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17522                                     wakeup->packet))
17523                                 goto free_msg;
17524                 }
17525
17526                 if (wakeup->net_detect &&
17527                     cfg80211_net_detect_results(msg, wakeup))
17528                                 goto free_msg;
17529
17530                 nla_nest_end(msg, reasons);
17531         }
17532
17533         genlmsg_end(msg, hdr);
17534
17535         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17536                                 NL80211_MCGRP_MLME, gfp);
17537         return;
17538
17539  free_msg:
17540         nlmsg_free(msg);
17541 }
17542 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17543 #endif
17544
17545 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17546                                 enum nl80211_tdls_operation oper,
17547                                 u16 reason_code, gfp_t gfp)
17548 {
17549         struct wireless_dev *wdev = dev->ieee80211_ptr;
17550         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17551         struct sk_buff *msg;
17552         void *hdr;
17553
17554         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17555                                          reason_code);
17556
17557         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17558         if (!msg)
17559                 return;
17560
17561         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17562         if (!hdr) {
17563                 nlmsg_free(msg);
17564                 return;
17565         }
17566
17567         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17568             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17569             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17570             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17571             (reason_code > 0 &&
17572              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17573                 goto nla_put_failure;
17574
17575         genlmsg_end(msg, hdr);
17576
17577         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17578                                 NL80211_MCGRP_MLME, gfp);
17579         return;
17580
17581  nla_put_failure:
17582         nlmsg_free(msg);
17583 }
17584 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17585
17586 static int nl80211_netlink_notify(struct notifier_block * nb,
17587                                   unsigned long state,
17588                                   void *_notify)
17589 {
17590         struct netlink_notify *notify = _notify;
17591         struct cfg80211_registered_device *rdev;
17592         struct wireless_dev *wdev;
17593         struct cfg80211_beacon_registration *reg, *tmp;
17594
17595         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17596                 return NOTIFY_DONE;
17597
17598         rcu_read_lock();
17599
17600         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17601                 struct cfg80211_sched_scan_request *sched_scan_req;
17602
17603                 list_for_each_entry_rcu(sched_scan_req,
17604                                         &rdev->sched_scan_req_list,
17605                                         list) {
17606                         if (sched_scan_req->owner_nlportid == notify->portid) {
17607                                 sched_scan_req->nl_owner_dead = true;
17608                                 schedule_work(&rdev->sched_scan_stop_wk);
17609                         }
17610                 }
17611
17612                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17613                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17614
17615                         if (wdev->owner_nlportid == notify->portid) {
17616                                 wdev->nl_owner_dead = true;
17617                                 schedule_work(&rdev->destroy_work);
17618                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17619                                 schedule_work(&wdev->disconnect_wk);
17620                         }
17621
17622                         cfg80211_release_pmsr(wdev, notify->portid);
17623                 }
17624
17625                 spin_lock_bh(&rdev->beacon_registrations_lock);
17626                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17627                                          list) {
17628                         if (reg->nlportid == notify->portid) {
17629                                 list_del(&reg->list);
17630                                 kfree(reg);
17631                                 break;
17632                         }
17633                 }
17634                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17635         }
17636
17637         rcu_read_unlock();
17638
17639         /*
17640          * It is possible that the user space process that is controlling the
17641          * indoor setting disappeared, so notify the regulatory core.
17642          */
17643         regulatory_netlink_notify(notify->portid);
17644         return NOTIFY_OK;
17645 }
17646
17647 static struct notifier_block nl80211_netlink_notifier = {
17648         .notifier_call = nl80211_netlink_notify,
17649 };
17650
17651 void cfg80211_ft_event(struct net_device *netdev,
17652                        struct cfg80211_ft_event_params *ft_event)
17653 {
17654         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17655         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17656         struct sk_buff *msg;
17657         void *hdr;
17658
17659         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17660
17661         if (!ft_event->target_ap)
17662                 return;
17663
17664         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17665                         GFP_KERNEL);
17666         if (!msg)
17667                 return;
17668
17669         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17670         if (!hdr)
17671                 goto out;
17672
17673         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17674             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17675             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17676                 goto out;
17677
17678         if (ft_event->ies &&
17679             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17680                 goto out;
17681         if (ft_event->ric_ies &&
17682             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17683                     ft_event->ric_ies))
17684                 goto out;
17685
17686         genlmsg_end(msg, hdr);
17687
17688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17689                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17690         return;
17691  out:
17692         nlmsg_free(msg);
17693 }
17694 EXPORT_SYMBOL(cfg80211_ft_event);
17695
17696 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17697 {
17698         struct cfg80211_registered_device *rdev;
17699         struct sk_buff *msg;
17700         void *hdr;
17701         u32 nlportid;
17702
17703         rdev = wiphy_to_rdev(wdev->wiphy);
17704         if (!rdev->crit_proto_nlportid)
17705                 return;
17706
17707         nlportid = rdev->crit_proto_nlportid;
17708         rdev->crit_proto_nlportid = 0;
17709
17710         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17711         if (!msg)
17712                 return;
17713
17714         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17715         if (!hdr)
17716                 goto nla_put_failure;
17717
17718         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17719             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17720                               NL80211_ATTR_PAD))
17721                 goto nla_put_failure;
17722
17723         genlmsg_end(msg, hdr);
17724
17725         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17726         return;
17727
17728  nla_put_failure:
17729         nlmsg_free(msg);
17730 }
17731 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17732
17733 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17734 {
17735         struct wiphy *wiphy = wdev->wiphy;
17736         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17737         struct sk_buff *msg;
17738         void *hdr;
17739
17740         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17741         if (!msg)
17742                 return;
17743
17744         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17745         if (!hdr)
17746                 goto out;
17747
17748         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17749             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17750             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17751                               NL80211_ATTR_PAD))
17752                 goto out;
17753
17754         genlmsg_end(msg, hdr);
17755
17756         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17757                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17758         return;
17759  out:
17760         nlmsg_free(msg);
17761 }
17762
17763 int cfg80211_external_auth_request(struct net_device *dev,
17764                                    struct cfg80211_external_auth_params *params,
17765                                    gfp_t gfp)
17766 {
17767         struct wireless_dev *wdev = dev->ieee80211_ptr;
17768         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17769         struct sk_buff *msg;
17770         void *hdr;
17771
17772         if (!wdev->conn_owner_nlportid)
17773                 return -EINVAL;
17774
17775         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17776         if (!msg)
17777                 return -ENOMEM;
17778
17779         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17780         if (!hdr)
17781                 goto nla_put_failure;
17782
17783         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17784             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17785             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17786             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17787                         params->action) ||
17788             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17789             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17790                     params->ssid.ssid))
17791                 goto nla_put_failure;
17792
17793         genlmsg_end(msg, hdr);
17794         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17795                         wdev->conn_owner_nlportid);
17796         return 0;
17797
17798  nla_put_failure:
17799         nlmsg_free(msg);
17800         return -ENOBUFS;
17801 }
17802 EXPORT_SYMBOL(cfg80211_external_auth_request);
17803
17804 void cfg80211_update_owe_info_event(struct net_device *netdev,
17805                                     struct cfg80211_update_owe_info *owe_info,
17806                                     gfp_t gfp)
17807 {
17808         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17809         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17810         struct sk_buff *msg;
17811         void *hdr;
17812
17813         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17814
17815         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17816         if (!msg)
17817                 return;
17818
17819         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17820         if (!hdr)
17821                 goto nla_put_failure;
17822
17823         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17824             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17825             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17826                 goto nla_put_failure;
17827
17828         if (!owe_info->ie_len ||
17829             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17830                 goto nla_put_failure;
17831
17832         genlmsg_end(msg, hdr);
17833
17834         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17835                                 NL80211_MCGRP_MLME, gfp);
17836         return;
17837
17838 nla_put_failure:
17839         genlmsg_cancel(msg, hdr);
17840         nlmsg_free(msg);
17841 }
17842 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17843
17844 /* initialisation/exit functions */
17845
17846 int __init nl80211_init(void)
17847 {
17848         int err;
17849
17850         err = genl_register_family(&nl80211_fam);
17851         if (err)
17852                 return err;
17853
17854         err = netlink_register_notifier(&nl80211_netlink_notifier);
17855         if (err)
17856                 goto err_out;
17857
17858         return 0;
17859  err_out:
17860         genl_unregister_family(&nl80211_fam);
17861         return err;
17862 }
17863
17864 void nl80211_exit(void)
17865 {
17866         netlink_unregister_notifier(&nl80211_netlink_notifier);
17867         genl_unregister_family(&nl80211_fam);
17868 }