net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                                 enum nl80211_iftype type,
  25                                                 u32 *flags,
  26                                                 struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct wireless_dev *wdev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &wdev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return wdev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  46 {
  47         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 106                                       struct wireless_dev *wdev)
 107 {
 108         return ieee80211_do_open(wdev, true);
 109 }
 110
 111 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 112                                       struct wireless_dev *wdev)
 113 {
 114         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 115 }
 116
 117 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 118                                   struct net_device *dev,
 119                                   u16 noack_map)
 120 {
 121         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 122
 123         sdata->noack_map = noack_map;
 124         return 0;
 125 }
 126
 127 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 128                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 129                              struct key_params *params)
 130 {
 131         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 132         struct sta_info *sta = NULL;
 133         struct ieee80211_key *key;
 134         int err;
 135
 136         if (!ieee80211_sdata_running(sdata))
 137                 return -ENETDOWN;
 138
 139         /* reject WEP and TKIP keys if WEP failed to initialize */
 140         switch (params->cipher) {
 141         case WLAN_CIPHER_SUITE_WEP40:
 142         case WLAN_CIPHER_SUITE_TKIP:
 143         case WLAN_CIPHER_SUITE_WEP104:
 144                 if (IS_ERR(sdata->local->wep_tx_tfm))
 145                         return -EINVAL;
 146                 break;
 147         default:
 148                 break;
 149         }
 150
 151         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 152                                   params->key, params->seq_len, params->seq);
 153         if (IS_ERR(key))
 154                 return PTR_ERR(key);
 155
 156         if (pairwise)
 157                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 158
 159         mutex_lock(&sdata->local->sta_mtx);
 160
 161         if (mac_addr) {
 162                 if (ieee80211_vif_is_mesh(&sdata->vif))
 163                         sta = sta_info_get(sdata, mac_addr);
 164                 else
 165                         sta = sta_info_get_bss(sdata, mac_addr);
 166                 if (!sta) {
 167                         ieee80211_key_free(sdata->local, key);
 168                         err = -ENOENT;
 169                         goto out_unlock;
 170                 }
 171         }
 172
 173         err = ieee80211_key_link(key, sdata, sta);
 174         if (err)
 175                 ieee80211_key_free(sdata->local, key);
 176
 177  out_unlock:
 178         mutex_unlock(&sdata->local->sta_mtx);
 179
 180         return err;
 181 }
 182
 183 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 184                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 185 {
 186         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 187         struct ieee80211_local *local = sdata->local;
 188         struct sta_info *sta;
 189         struct ieee80211_key *key = NULL;
 190         int ret;
 191
 192         mutex_lock(&local->sta_mtx);
 193         mutex_lock(&local->key_mtx);
 194
 195         if (mac_addr) {
 196                 ret = -ENOENT;
 197
 198                 sta = sta_info_get_bss(sdata, mac_addr);
 199                 if (!sta)
 200                         goto out_unlock;
 201
 202                 if (pairwise)
 203                         key = key_mtx_dereference(local, sta->ptk);
 204                 else
 205                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 206         } else
 207                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 208
 209         if (!key) {
 210                 ret = -ENOENT;
 211                 goto out_unlock;
 212         }
 213
 214         __ieee80211_key_free(key);
 215
 216         ret = 0;
 217  out_unlock:
 218         mutex_unlock(&local->key_mtx);
 219         mutex_unlock(&local->sta_mtx);
 220
 221         return ret;
 222 }
 223
 224 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 225                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 226                              void *cookie,
 227                              void (*callback)(void *cookie,
 228                                               struct key_params *params))
 229 {
 230         struct ieee80211_sub_if_data *sdata;
 231         struct sta_info *sta = NULL;
 232         u8 seq[6] = {0};
 233         struct key_params params;
 234         struct ieee80211_key *key = NULL;
 235         u64 pn64;
 236         u32 iv32;
 237         u16 iv16;
 238         int err = -ENOENT;
 239
 240         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 241
 242         rcu_read_lock();
 243
 244         if (mac_addr) {
 245                 sta = sta_info_get_bss(sdata, mac_addr);
 246                 if (!sta)
 247                         goto out;
 248
 249                 if (pairwise)
 250                         key = rcu_dereference(sta->ptk);
 251                 else if (key_idx < NUM_DEFAULT_KEYS)
 252                         key = rcu_dereference(sta->gtk[key_idx]);
 253         } else
 254                 key = rcu_dereference(sdata->keys[key_idx]);
 255
 256         if (!key)
 257                 goto out;
 258
 259         memset(&params, 0, sizeof(params));
 260
 261         params.cipher = key->conf.cipher;
 262
 263         switch (key->conf.cipher) {
 264         case WLAN_CIPHER_SUITE_TKIP:
 265                 iv32 = key->u.tkip.tx.iv32;
 266                 iv16 = key->u.tkip.tx.iv16;
 267
 268                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 269                         drv_get_tkip_seq(sdata->local,
 270                                          key->conf.hw_key_idx,
 271                                          &iv32, &iv16);
 272
 273                 seq[0] = iv16 & 0xff;
 274                 seq[1] = (iv16 >> 8) & 0xff;
 275                 seq[2] = iv32 & 0xff;
 276                 seq[3] = (iv32 >> 8) & 0xff;
 277                 seq[4] = (iv32 >> 16) & 0xff;
 278                 seq[5] = (iv32 >> 24) & 0xff;
 279                 params.seq = seq;
 280                 params.seq_len = 6;
 281                 break;
 282         case WLAN_CIPHER_SUITE_CCMP:
 283                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 284                 seq[0] = pn64;
 285                 seq[1] = pn64 >> 8;
 286                 seq[2] = pn64 >> 16;
 287                 seq[3] = pn64 >> 24;
 288                 seq[4] = pn64 >> 32;
 289                 seq[5] = pn64 >> 40;
 290                 params.seq = seq;
 291                 params.seq_len = 6;
 292                 break;
 293         case WLAN_CIPHER_SUITE_AES_CMAC:
 294                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 295                 seq[0] = pn64;
 296                 seq[1] = pn64 >> 8;
 297                 seq[2] = pn64 >> 16;
 298                 seq[3] = pn64 >> 24;
 299                 seq[4] = pn64 >> 32;
 300                 seq[5] = pn64 >> 40;
 301                 params.seq = seq;
 302                 params.seq_len = 6;
 303                 break;
 304         }
 305
 306         params.key = key->conf.key;
 307         params.key_len = key->conf.keylen;
 308
 309         callback(cookie, &params);
 310         err = 0;
 311
 312  out:
 313         rcu_read_unlock();
 314         return err;
 315 }
 316
 317 static int ieee80211_config_default_key(struct wiphy *wiphy,
 318                                         struct net_device *dev,
 319                                         u8 key_idx, bool uni,
 320                                         bool multi)
 321 {
 322         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 323
 324         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 325
 326         return 0;
 327 }
 328
 329 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 330                                              struct net_device *dev,
 331                                              u8 key_idx)
 332 {
 333         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 334
 335         ieee80211_set_default_mgmt_key(sdata, key_idx);
 336
 337         return 0;
 338 }
 339
 340 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 341 {
 342         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 343                 struct ieee80211_supported_band *sband;
 344                 sband = sta->local->hw.wiphy->bands[
 345                                 sta->local->oper_channel->band];
 346                 rate->legacy = sband->bitrates[idx].bitrate;
 347         } else
 348                 rate->mcs = idx;
 349 }
 350
 351 void sta_set_rate_info_tx(struct sta_info *sta,
 352                           const struct ieee80211_tx_rate *rate,
 353                           struct rate_info *rinfo)
 354 {
 355         rinfo->flags = 0;
 356         if (rate->flags & IEEE80211_TX_RC_MCS)
 357                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 358         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 359                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 360         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 361                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 362         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 363 }
 364
 365 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 366 {
 367         struct ieee80211_sub_if_data *sdata = sta->sdata;
 368         struct ieee80211_local *local = sdata->local;
 369         struct timespec uptime;
 370
 371         sinfo->generation = sdata->local->sta_generation;
 372
 373         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 374                         STATION_INFO_RX_BYTES |
 375                         STATION_INFO_TX_BYTES |
 376                         STATION_INFO_RX_PACKETS |
 377                         STATION_INFO_TX_PACKETS |
 378                         STATION_INFO_TX_RETRIES |
 379                         STATION_INFO_TX_FAILED |
 380                         STATION_INFO_TX_BITRATE |
 381                         STATION_INFO_RX_BITRATE |
 382                         STATION_INFO_RX_DROP_MISC |
 383                         STATION_INFO_BSS_PARAM |
 384                         STATION_INFO_CONNECTED_TIME |
 385                         STATION_INFO_STA_FLAGS |
 386                         STATION_INFO_BEACON_LOSS_COUNT;
 387
 388         do_posix_clock_monotonic_gettime(&uptime);
 389         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 390
 391         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 392         sinfo->rx_bytes = sta->rx_bytes;
 393         sinfo->tx_bytes = sta->tx_bytes;
 394         sinfo->rx_packets = sta->rx_packets;
 395         sinfo->tx_packets = sta->tx_packets;
 396         sinfo->tx_retries = sta->tx_retry_count;
 397         sinfo->tx_failed = sta->tx_retry_failed;
 398         sinfo->rx_dropped_misc = sta->rx_dropped;
 399         sinfo->beacon_loss_count = sta->beacon_loss_count;
 400
 401         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 402             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 403                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 404                 if (!local->ops->get_rssi ||
 405                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 406                         sinfo->signal = (s8)sta->last_signal;
 407                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 408         }
 409
 410         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 411
 412         sinfo->rxrate.flags = 0;
 413         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 414                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 415         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 416                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 417         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 418                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 419         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 420
 421         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 422 #ifdef CONFIG_MAC80211_MESH
 423                 sinfo->filled |= STATION_INFO_LLID |
 424                                  STATION_INFO_PLID |
 425                                  STATION_INFO_PLINK_STATE;
 426
 427                 sinfo->llid = le16_to_cpu(sta->llid);
 428                 sinfo->plid = le16_to_cpu(sta->plid);
 429                 sinfo->plink_state = sta->plink_state;
 430                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 431                         sinfo->filled |= STATION_INFO_T_OFFSET;
 432                         sinfo->t_offset = sta->t_offset;
 433                 }
 434 #endif
 435         }
 436
 437         sinfo->bss_param.flags = 0;
 438         if (sdata->vif.bss_conf.use_cts_prot)
 439                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 440         if (sdata->vif.bss_conf.use_short_preamble)
 441                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 442         if (sdata->vif.bss_conf.use_short_slot)
 443                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 444         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 445         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 446
 447         sinfo->sta_flags.set = 0;
 448         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 449                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 450                                 BIT(NL80211_STA_FLAG_WME) |
 451                                 BIT(NL80211_STA_FLAG_MFP) |
 452                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 453                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 454         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 455                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 456         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 457                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 458         if (test_sta_flag(sta, WLAN_STA_WME))
 459                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 460         if (test_sta_flag(sta, WLAN_STA_MFP))
 461                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 462         if (test_sta_flag(sta, WLAN_STA_AUTH))
 463                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 464         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 465                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 466 }
 467
 468 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 469         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 470         "rx_duplicates", "rx_fragments", "rx_dropped",
 471         "tx_packets", "tx_bytes", "tx_fragments",
 472         "tx_filtered", "tx_retry_failed", "tx_retries",
 473         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 474         "channel", "noise", "ch_time", "ch_time_busy",
 475         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 476 };
 477 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 478
 479 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 480                                        struct net_device *dev,
 481                                        int sset)
 482 {
 483         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 484         int rv = 0;
 485
 486         if (sset == ETH_SS_STATS)
 487                 rv += STA_STATS_LEN;
 488
 489         rv += drv_get_et_sset_count(sdata, sset);
 490
 491         if (rv == 0)
 492                 return -EOPNOTSUPP;
 493         return rv;
 494 }
 495
 496 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 497                                    struct net_device *dev,
 498                                    struct ethtool_stats *stats,
 499                                    u64 *data)
 500 {
 501         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 502         struct sta_info *sta;
 503         struct ieee80211_local *local = sdata->local;
 504         struct station_info sinfo;
 505         struct survey_info survey;
 506         int i, q;
 507 #define STA_STATS_SURVEY_LEN 7
 508
 509         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 510
 511 #define ADD_STA_STATS(sta)                              \
 512         do {                                            \
 513                 data[i++] += sta->rx_packets;           \
 514                 data[i++] += sta->rx_bytes;             \
 515                 data[i++] += sta->wep_weak_iv_count;    \
 516                 data[i++] += sta->num_duplicates;       \
 517                 data[i++] += sta->rx_fragments;         \
 518                 data[i++] += sta->rx_dropped;           \
 519                                                         \
 520                 data[i++] += sta->tx_packets;           \
 521                 data[i++] += sta->tx_bytes;             \
 522                 data[i++] += sta->tx_fragments;         \
 523                 data[i++] += sta->tx_filtered_count;    \
 524                 data[i++] += sta->tx_retry_failed;      \
 525                 data[i++] += sta->tx_retry_count;       \
 526                 data[i++] += sta->beacon_loss_count;    \
 527         } while (0)
 528
 529         /* For Managed stations, find the single station based on BSSID
 530          * and use that.  For interface types, iterate through all available
 531          * stations and add stats for any station that is assigned to this
 532          * network device.
 533          */
 534
 535         mutex_lock(&local->sta_mtx);
 536
 537         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 538                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 539
 540                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 541                         goto do_survey;
 542
 543                 i = 0;
 544                 ADD_STA_STATS(sta);
 545
 546                 data[i++] = sta->sta_state;
 547
 548                 sinfo.filled = 0;
 549                 sta_set_sinfo(sta, &sinfo);
 550
 551                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 552                         data[i] = 100000 *
 553                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 554                 i++;
 555                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 556                         data[i] = 100000 *
 557                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 558                 i++;
 559
 560                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 561                         data[i] = (u8)sinfo.signal_avg;
 562                 i++;
 563         } else {
 564                 list_for_each_entry(sta, &local->sta_list, list) {
 565                         /* Make sure this station belongs to the proper dev */
 566                         if (sta->sdata->dev != dev)
 567                                 continue;
 568
 569                         i = 0;
 570                         ADD_STA_STATS(sta);
 571                 }
 572         }
 573
 574 do_survey:
 575         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 576         /* Get survey stats for current channel */
 577         q = 0;
 578         while (true) {
 579                 survey.filled = 0;
 580                 if (drv_get_survey(local, q, &survey) != 0) {
 581                         survey.filled = 0;
 582                         break;
 583                 }
 584
 585                 if (survey.channel &&
 586                     (local->oper_channel->center_freq ==
 587                      survey.channel->center_freq))
 588                         break;
 589                 q++;
 590         }
 591
 592         if (survey.filled)
 593                 data[i++] = survey.channel->center_freq;
 594         else
 595                 data[i++] = 0;
 596         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 597                 data[i++] = (u8)survey.noise;
 598         else
 599                 data[i++] = -1LL;
 600         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 601                 data[i++] = survey.channel_time;
 602         else
 603                 data[i++] = -1LL;
 604         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 605                 data[i++] = survey.channel_time_busy;
 606         else
 607                 data[i++] = -1LL;
 608         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 609                 data[i++] = survey.channel_time_ext_busy;
 610         else
 611                 data[i++] = -1LL;
 612         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 613                 data[i++] = survey.channel_time_rx;
 614         else
 615                 data[i++] = -1LL;
 616         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 617                 data[i++] = survey.channel_time_tx;
 618         else
 619                 data[i++] = -1LL;
 620
 621         mutex_unlock(&local->sta_mtx);
 622
 623         if (WARN_ON(i != STA_STATS_LEN))
 624                 return;
 625
 626         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 627 }
 628
 629 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 630                                      struct net_device *dev,
 631                                      u32 sset, u8 *data)
 632 {
 633         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 634         int sz_sta_stats = 0;
 635
 636         if (sset == ETH_SS_STATS) {
 637                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 638                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 639         }
 640         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 641 }
 642
 643 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 644                                  int idx, u8 *mac, struct station_info *sinfo)
 645 {
 646         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 647         struct ieee80211_local *local = sdata->local;
 648         struct sta_info *sta;
 649         int ret = -ENOENT;
 650
 651         mutex_lock(&local->sta_mtx);
 652
 653         sta = sta_info_get_by_idx(sdata, idx);
 654         if (sta) {
 655                 ret = 0;
 656                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 657                 sta_set_sinfo(sta, sinfo);
 658         }
 659
 660         mutex_unlock(&local->sta_mtx);
 661
 662         return ret;
 663 }
 664
 665 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 666                                  int idx, struct survey_info *survey)
 667 {
 668         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 669
 670         return drv_get_survey(local, idx, survey);
 671 }
 672
 673 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 674                                  u8 *mac, struct station_info *sinfo)
 675 {
 676         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 677         struct ieee80211_local *local = sdata->local;
 678         struct sta_info *sta;
 679         int ret = -ENOENT;
 680
 681         mutex_lock(&local->sta_mtx);
 682
 683         sta = sta_info_get_bss(sdata, mac);
 684         if (sta) {
 685                 ret = 0;
 686                 sta_set_sinfo(sta, sinfo);
 687         }
 688
 689         mutex_unlock(&local->sta_mtx);
 690
 691         return ret;
 692 }
 693
 694 static int ieee80211_set_channel(struct wiphy *wiphy,
 695                                  struct net_device *netdev,
 696                                  struct ieee80211_channel *chan,
 697                                  enum nl80211_channel_type channel_type)
 698 {
 699         struct ieee80211_local *local = wiphy_priv(wiphy);
 700         struct ieee80211_sub_if_data *sdata = NULL;
 701
 702         if (netdev)
 703                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
 704
 705         switch (ieee80211_get_channel_mode(local, NULL)) {
 706         case CHAN_MODE_HOPPING:
 707                 return -EBUSY;
 708         case CHAN_MODE_FIXED:
 709                 if (local->oper_channel != chan ||
 710                     (!sdata && local->_oper_channel_type != channel_type))
 711                         return -EBUSY;
 712                 if (!sdata && local->_oper_channel_type == channel_type)
 713                         return 0;
 714                 break;
 715         case CHAN_MODE_UNDEFINED:
 716                 break;
 717         }
 718
 719         if (!ieee80211_set_channel_type(local, sdata, channel_type))
 720                 return -EBUSY;
 721
 722         local->oper_channel = chan;
 723
 724         /* auto-detects changes */
 725         ieee80211_hw_config(local, 0);
 726
 727         return 0;
 728 }
 729
 730 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 731                                          struct ieee80211_channel *chan,
 732                                          enum nl80211_channel_type channel_type)
 733 {
 734         return ieee80211_set_channel(wiphy, NULL, chan, channel_type);
 735 }
 736
 737 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 738                                     const u8 *resp, size_t resp_len)
 739 {
 740         struct probe_resp *new, *old;
 741
 742         if (!resp || !resp_len)
 743                 return -EINVAL;
 744
 745         old = rtnl_dereference(sdata->u.ap.probe_resp);
 746
 747         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 748         if (!new)
 749                 return -ENOMEM;
 750
 751         new->len = resp_len;
 752         memcpy(new->data, resp, resp_len);
 753
 754         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 755         if (old)
 756                 kfree_rcu(old, rcu_head);
 757
 758         return 0;
 759 }
 760
 761 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 762                                    struct cfg80211_beacon_data *params)
 763 {
 764         struct beacon_data *new, *old;
 765         int new_head_len, new_tail_len;
 766         int size, err;
 767         u32 changed = BSS_CHANGED_BEACON;
 768
 769         old = rtnl_dereference(sdata->u.ap.beacon);
 770
 771         /* Need to have a beacon head if we don't have one yet */
 772         if (!params->head && !old)
 773                 return -EINVAL;
 774
 775         /* new or old head? */
 776         if (params->head)
 777                 new_head_len = params->head_len;
 778         else
 779                 new_head_len = old->head_len;
 780
 781         /* new or old tail? */
 782         if (params->tail || !old)
 783                 /* params->tail_len will be zero for !params->tail */
 784                 new_tail_len = params->tail_len;
 785         else
 786                 new_tail_len = old->tail_len;
 787
 788         size = sizeof(*new) + new_head_len + new_tail_len;
 789
 790         new = kzalloc(size, GFP_KERNEL);
 791         if (!new)
 792                 return -ENOMEM;
 793
 794         /* start filling the new info now */
 795
 796         /*
 797          * pointers go into the block we allocated,
 798          * memory is | beacon_data | head | tail |
 799          */
 800         new->head = ((u8 *) new) + sizeof(*new);
 801         new->tail = new->head + new_head_len;
 802         new->head_len = new_head_len;
 803         new->tail_len = new_tail_len;
 804
 805         /* copy in head */
 806         if (params->head)
 807                 memcpy(new->head, params->head, new_head_len);
 808         else
 809                 memcpy(new->head, old->head, new_head_len);
 810
 811         /* copy in optional tail */
 812         if (params->tail)
 813                 memcpy(new->tail, params->tail, new_tail_len);
 814         else
 815                 if (old)
 816                         memcpy(new->tail, old->tail, new_tail_len);
 817
 818         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 819                                        params->probe_resp_len);
 820         if (err < 0)
 821                 return err;
 822         if (err == 0)
 823                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 824
 825         rcu_assign_pointer(sdata->u.ap.beacon, new);
 826
 827         if (old)
 828                 kfree_rcu(old, rcu_head);
 829
 830         return changed;
 831 }
 832
 833 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 834                               struct cfg80211_ap_settings *params)
 835 {
 836         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 837         struct beacon_data *old;
 838         struct ieee80211_sub_if_data *vlan;
 839         u32 changed = BSS_CHANGED_BEACON_INT |
 840                       BSS_CHANGED_BEACON_ENABLED |
 841                       BSS_CHANGED_BEACON |
 842                       BSS_CHANGED_SSID;
 843         int err;
 844
 845         old = rtnl_dereference(sdata->u.ap.beacon);
 846         if (old)
 847                 return -EALREADY;
 848
 849         err = ieee80211_set_channel(wiphy, dev, params->channel,
 850                                     params->channel_type);
 851         if (err)
 852                 return err;
 853
 854         /*
 855          * Apply control port protocol, this allows us to
 856          * not encrypt dynamic WEP control frames.
 857          */
 858         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 859         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 860         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 861                 vlan->control_port_protocol =
 862                         params->crypto.control_port_ethertype;
 863                 vlan->control_port_no_encrypt =
 864                         params->crypto.control_port_no_encrypt;
 865         }
 866
 867         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 868         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 869
 870         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 871         if (params->ssid_len)
 872                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 873                        params->ssid_len);
 874         sdata->vif.bss_conf.hidden_ssid =
 875                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 876
 877         err = ieee80211_assign_beacon(sdata, &params->beacon);
 878         if (err < 0)
 879                 return err;
 880         changed |= err;
 881
 882         ieee80211_bss_info_change_notify(sdata, changed);
 883
 884         netif_carrier_on(dev);
 885         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 886                 netif_carrier_on(vlan->dev);
 887
 888         return 0;
 889 }
 890
 891 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 892                                    struct cfg80211_beacon_data *params)
 893 {
 894         struct ieee80211_sub_if_data *sdata;
 895         struct beacon_data *old;
 896         int err;
 897
 898         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 899
 900         old = rtnl_dereference(sdata->u.ap.beacon);
 901         if (!old)
 902                 return -ENOENT;
 903
 904         err = ieee80211_assign_beacon(sdata, params);
 905         if (err < 0)
 906                 return err;
 907         ieee80211_bss_info_change_notify(sdata, err);
 908         return 0;
 909 }
 910
 911 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 912 {
 913         struct ieee80211_sub_if_data *sdata, *vlan;
 914         struct beacon_data *old;
 915
 916         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 917
 918         old = rtnl_dereference(sdata->u.ap.beacon);
 919         if (!old)
 920                 return -ENOENT;
 921
 922         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 923                 netif_carrier_off(vlan->dev);
 924         netif_carrier_off(dev);
 925
 926         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 927
 928         kfree_rcu(old, rcu_head);
 929
 930         sta_info_flush(sdata->local, sdata);
 931         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 932
 933         return 0;
 934 }
 935
 936 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 937 struct iapp_layer2_update {
 938         u8 da[ETH_ALEN];        /* broadcast */
 939         u8 sa[ETH_ALEN];        /* STA addr */
 940         __be16 len;             /* 6 */
 941         u8 dsap;                /* 0 */
 942         u8 ssap;                /* 0 */
 943         u8 control;
 944         u8 xid_info[3];
 945 } __packed;
 946
 947 static void ieee80211_send_layer2_update(struct sta_info *sta)
 948 {
 949         struct iapp_layer2_update *msg;
 950         struct sk_buff *skb;
 951
 952         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 953          * bridge devices */
 954
 955         skb = dev_alloc_skb(sizeof(*msg));
 956         if (!skb)
 957                 return;
 958         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 959
 960         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 961          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 962
 963         eth_broadcast_addr(msg->da);
 964         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 965         msg->len = htons(6);
 966         msg->dsap = 0;
 967         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 968         msg->control = 0xaf;    /* XID response lsb.1111F101.
 969                                  * F=0 (no poll command; unsolicited frame) */
 970         msg->xid_info[0] = 0x81;        /* XID format identifier */
 971         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 972         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 973
 974         skb->dev = sta->sdata->dev;
 975         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 976         memset(skb->cb, 0, sizeof(skb->cb));
 977         netif_rx_ni(skb);
 978 }
 979
 980 static int sta_apply_parameters(struct ieee80211_local *local,
 981                                 struct sta_info *sta,
 982                                 struct station_parameters *params)
 983 {
 984         int ret = 0;
 985         u32 rates;
 986         int i, j;
 987         struct ieee80211_supported_band *sband;
 988         struct ieee80211_sub_if_data *sdata = sta->sdata;
 989         u32 mask, set;
 990
 991         sband = local->hw.wiphy->bands[local->oper_channel->band];
 992
 993         mask = params->sta_flags_mask;
 994         set = params->sta_flags_set;
 995
 996         /*
 997          * In mesh mode, we can clear AUTHENTICATED flag but must
 998          * also make ASSOCIATED follow appropriately for the driver
 999          * API. See also below, after AUTHORIZED changes.
1000          */
1001         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1002                 /* cfg80211 should not allow this in non-mesh modes */
1003                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1004                         return -EINVAL;
1005
1006                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1007                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1008                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1009                         if (ret)
1010                                 return ret;
1011                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1012                         if (ret)
1013                                 return ret;
1014                 }
1015         }
1016
1017         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1018                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1019                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1020                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1021                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1022                 if (ret)
1023                         return ret;
1024         }
1025
1026         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1027                 /* cfg80211 should not allow this in non-mesh modes */
1028                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1029                         return -EINVAL;
1030
1031                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1032                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1033                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1034                         if (ret)
1035                                 return ret;
1036                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1037                         if (ret)
1038                                 return ret;
1039                 }
1040         }
1041
1042
1043         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1044                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1045                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1046                 else
1047                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1048         }
1049
1050         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1051                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1052                         set_sta_flag(sta, WLAN_STA_WME);
1053                         sta->sta.wme = true;
1054                 } else {
1055                         clear_sta_flag(sta, WLAN_STA_WME);
1056                         sta->sta.wme = false;
1057                 }
1058         }
1059
1060         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1061                 if (set & BIT(NL80211_STA_FLAG_MFP))
1062                         set_sta_flag(sta, WLAN_STA_MFP);
1063                 else
1064                         clear_sta_flag(sta, WLAN_STA_MFP);
1065         }
1066
1067         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1068                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1069                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1070                 else
1071                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1072         }
1073
1074         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1075                 sta->sta.uapsd_queues = params->uapsd_queues;
1076                 sta->sta.max_sp = params->max_sp;
1077         }
1078
1079         /*
1080          * cfg80211 validates this (1-2007) and allows setting the AID
1081          * only when creating a new station entry
1082          */
1083         if (params->aid)
1084                 sta->sta.aid = params->aid;
1085
1086         /*
1087          * FIXME: updating the following information is racy when this
1088          *        function is called from ieee80211_change_station().
1089          *        However, all this information should be static so
1090          *        maybe we should just reject attemps to change it.
1091          */
1092
1093         if (params->listen_interval >= 0)
1094                 sta->listen_interval = params->listen_interval;
1095
1096         if (params->supported_rates) {
1097                 rates = 0;
1098
1099                 for (i = 0; i < params->supported_rates_len; i++) {
1100                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1101                         for (j = 0; j < sband->n_bitrates; j++) {
1102                                 if (sband->bitrates[j].bitrate == rate)
1103                                         rates |= BIT(j);
1104                         }
1105                 }
1106                 sta->sta.supp_rates[local->oper_channel->band] = rates;
1107         }
1108
1109         if (params->ht_capa)
1110                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1111                                                   params->ht_capa,
1112                                                   &sta->sta.ht_cap);
1113
1114         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1115 #ifdef CONFIG_MAC80211_MESH
1116                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1117                         switch (params->plink_state) {
1118                         case NL80211_PLINK_LISTEN:
1119                         case NL80211_PLINK_ESTAB:
1120                         case NL80211_PLINK_BLOCKED:
1121                                 sta->plink_state = params->plink_state;
1122                                 break;
1123                         default:
1124                                 /*  nothing  */
1125                                 break;
1126                         }
1127                 else
1128                         switch (params->plink_action) {
1129                         case PLINK_ACTION_OPEN:
1130                                 mesh_plink_open(sta);
1131                                 break;
1132                         case PLINK_ACTION_BLOCK:
1133                                 mesh_plink_block(sta);
1134                                 break;
1135                         }
1136 #endif
1137         }
1138
1139         return 0;
1140 }
1141
1142 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1143                                  u8 *mac, struct station_parameters *params)
1144 {
1145         struct ieee80211_local *local = wiphy_priv(wiphy);
1146         struct sta_info *sta;
1147         struct ieee80211_sub_if_data *sdata;
1148         int err;
1149         int layer2_update;
1150
1151         if (params->vlan) {
1152                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1153
1154                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1155                     sdata->vif.type != NL80211_IFTYPE_AP)
1156                         return -EINVAL;
1157         } else
1158                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1159
1160         if (ether_addr_equal(mac, sdata->vif.addr))
1161                 return -EINVAL;
1162
1163         if (is_multicast_ether_addr(mac))
1164                 return -EINVAL;
1165
1166         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1167         if (!sta)
1168                 return -ENOMEM;
1169
1170         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1171         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1172
1173         err = sta_apply_parameters(local, sta, params);
1174         if (err) {
1175                 sta_info_free(local, sta);
1176                 return err;
1177         }
1178
1179         /*
1180          * for TDLS, rate control should be initialized only when supported
1181          * rates are known.
1182          */
1183         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1184                 rate_control_rate_init(sta);
1185
1186         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1187                 sdata->vif.type == NL80211_IFTYPE_AP;
1188
1189         err = sta_info_insert_rcu(sta);
1190         if (err) {
1191                 rcu_read_unlock();
1192                 return err;
1193         }
1194
1195         if (layer2_update)
1196                 ieee80211_send_layer2_update(sta);
1197
1198         rcu_read_unlock();
1199
1200         return 0;
1201 }
1202
1203 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1204                                  u8 *mac)
1205 {
1206         struct ieee80211_local *local = wiphy_priv(wiphy);
1207         struct ieee80211_sub_if_data *sdata;
1208
1209         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1210
1211         if (mac)
1212                 return sta_info_destroy_addr_bss(sdata, mac);
1213
1214         sta_info_flush(local, sdata);
1215         return 0;
1216 }
1217
1218 static int ieee80211_change_station(struct wiphy *wiphy,
1219                                     struct net_device *dev,
1220                                     u8 *mac,
1221                                     struct station_parameters *params)
1222 {
1223         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1224         struct ieee80211_local *local = wiphy_priv(wiphy);
1225         struct sta_info *sta;
1226         struct ieee80211_sub_if_data *vlansdata;
1227         int err;
1228
1229         mutex_lock(&local->sta_mtx);
1230
1231         sta = sta_info_get_bss(sdata, mac);
1232         if (!sta) {
1233                 mutex_unlock(&local->sta_mtx);
1234                 return -ENOENT;
1235         }
1236
1237         /* in station mode, supported rates are only valid with TDLS */
1238         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1239             params->supported_rates &&
1240             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1241                 mutex_unlock(&local->sta_mtx);
1242                 return -EINVAL;
1243         }
1244
1245         if (params->vlan && params->vlan != sta->sdata->dev) {
1246                 bool prev_4addr = false;
1247                 bool new_4addr = false;
1248
1249                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1250
1251                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1252                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1253                         mutex_unlock(&local->sta_mtx);
1254                         return -EINVAL;
1255                 }
1256
1257                 if (params->vlan->ieee80211_ptr->use_4addr) {
1258                         if (vlansdata->u.vlan.sta) {
1259                                 mutex_unlock(&local->sta_mtx);
1260                                 return -EBUSY;
1261                         }
1262
1263                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1264                         new_4addr = true;
1265                 }
1266
1267                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1268                     sta->sdata->u.vlan.sta) {
1269                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1270                         prev_4addr = true;
1271                 }
1272
1273                 sta->sdata = vlansdata;
1274
1275                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1276                     prev_4addr != new_4addr) {
1277                         if (new_4addr)
1278                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1279                         else
1280                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1281                 }
1282
1283                 ieee80211_send_layer2_update(sta);
1284         }
1285
1286         err = sta_apply_parameters(local, sta, params);
1287         if (err) {
1288                 mutex_unlock(&local->sta_mtx);
1289                 return err;
1290         }
1291
1292         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1293                 rate_control_rate_init(sta);
1294
1295         mutex_unlock(&local->sta_mtx);
1296
1297         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1298             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1299                 ieee80211_recalc_ps(local, -1);
1300                 ieee80211_recalc_ps_vif(sdata);
1301         }
1302         return 0;
1303 }
1304
1305 #ifdef CONFIG_MAC80211_MESH
1306 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1307                                  u8 *dst, u8 *next_hop)
1308 {
1309         struct ieee80211_sub_if_data *sdata;
1310         struct mesh_path *mpath;
1311         struct sta_info *sta;
1312         int err;
1313
1314         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1315
1316         rcu_read_lock();
1317         sta = sta_info_get(sdata, next_hop);
1318         if (!sta) {
1319                 rcu_read_unlock();
1320                 return -ENOENT;
1321         }
1322
1323         err = mesh_path_add(dst, sdata);
1324         if (err) {
1325                 rcu_read_unlock();
1326                 return err;
1327         }
1328
1329         mpath = mesh_path_lookup(dst, sdata);
1330         if (!mpath) {
1331                 rcu_read_unlock();
1332                 return -ENXIO;
1333         }
1334         mesh_path_fix_nexthop(mpath, sta);
1335
1336         rcu_read_unlock();
1337         return 0;
1338 }
1339
1340 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1341                                  u8 *dst)
1342 {
1343         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1344
1345         if (dst)
1346                 return mesh_path_del(dst, sdata);
1347
1348         mesh_path_flush_by_iface(sdata);
1349         return 0;
1350 }
1351
1352 static int ieee80211_change_mpath(struct wiphy *wiphy,
1353                                     struct net_device *dev,
1354                                     u8 *dst, u8 *next_hop)
1355 {
1356         struct ieee80211_sub_if_data *sdata;
1357         struct mesh_path *mpath;
1358         struct sta_info *sta;
1359
1360         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1361
1362         rcu_read_lock();
1363
1364         sta = sta_info_get(sdata, next_hop);
1365         if (!sta) {
1366                 rcu_read_unlock();
1367                 return -ENOENT;
1368         }
1369
1370         mpath = mesh_path_lookup(dst, sdata);
1371         if (!mpath) {
1372                 rcu_read_unlock();
1373                 return -ENOENT;
1374         }
1375
1376         mesh_path_fix_nexthop(mpath, sta);
1377
1378         rcu_read_unlock();
1379         return 0;
1380 }
1381
1382 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1383                             struct mpath_info *pinfo)
1384 {
1385         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1386
1387         if (next_hop_sta)
1388                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1389         else
1390                 memset(next_hop, 0, ETH_ALEN);
1391
1392         pinfo->generation = mesh_paths_generation;
1393
1394         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1395                         MPATH_INFO_SN |
1396                         MPATH_INFO_METRIC |
1397                         MPATH_INFO_EXPTIME |
1398                         MPATH_INFO_DISCOVERY_TIMEOUT |
1399                         MPATH_INFO_DISCOVERY_RETRIES |
1400                         MPATH_INFO_FLAGS;
1401
1402         pinfo->frame_qlen = mpath->frame_queue.qlen;
1403         pinfo->sn = mpath->sn;
1404         pinfo->metric = mpath->metric;
1405         if (time_before(jiffies, mpath->exp_time))
1406                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1407         pinfo->discovery_timeout =
1408                         jiffies_to_msecs(mpath->discovery_timeout);
1409         pinfo->discovery_retries = mpath->discovery_retries;
1410         pinfo->flags = 0;
1411         if (mpath->flags & MESH_PATH_ACTIVE)
1412                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1413         if (mpath->flags & MESH_PATH_RESOLVING)
1414                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1415         if (mpath->flags & MESH_PATH_SN_VALID)
1416                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1417         if (mpath->flags & MESH_PATH_FIXED)
1418                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1419         if (mpath->flags & MESH_PATH_RESOLVING)
1420                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1421
1422         pinfo->flags = mpath->flags;
1423 }
1424
1425 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1426                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1427
1428 {
1429         struct ieee80211_sub_if_data *sdata;
1430         struct mesh_path *mpath;
1431
1432         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433
1434         rcu_read_lock();
1435         mpath = mesh_path_lookup(dst, sdata);
1436         if (!mpath) {
1437                 rcu_read_unlock();
1438                 return -ENOENT;
1439         }
1440         memcpy(dst, mpath->dst, ETH_ALEN);
1441         mpath_set_pinfo(mpath, next_hop, pinfo);
1442         rcu_read_unlock();
1443         return 0;
1444 }
1445
1446 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1447                                  int idx, u8 *dst, u8 *next_hop,
1448                                  struct mpath_info *pinfo)
1449 {
1450         struct ieee80211_sub_if_data *sdata;
1451         struct mesh_path *mpath;
1452
1453         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1454
1455         rcu_read_lock();
1456         mpath = mesh_path_lookup_by_idx(idx, sdata);
1457         if (!mpath) {
1458                 rcu_read_unlock();
1459                 return -ENOENT;
1460         }
1461         memcpy(dst, mpath->dst, ETH_ALEN);
1462         mpath_set_pinfo(mpath, next_hop, pinfo);
1463         rcu_read_unlock();
1464         return 0;
1465 }
1466
1467 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1468                                 struct net_device *dev,
1469                                 struct mesh_config *conf)
1470 {
1471         struct ieee80211_sub_if_data *sdata;
1472         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1473
1474         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1475         return 0;
1476 }
1477
1478 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1479 {
1480         return (mask >> (parm-1)) & 0x1;
1481 }
1482
1483 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1484                 const struct mesh_setup *setup)
1485 {
1486         u8 *new_ie;
1487         const u8 *old_ie;
1488         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1489                                         struct ieee80211_sub_if_data, u.mesh);
1490
1491         /* allocate information elements */
1492         new_ie = NULL;
1493         old_ie = ifmsh->ie;
1494
1495         if (setup->ie_len) {
1496                 new_ie = kmemdup(setup->ie, setup->ie_len,
1497                                 GFP_KERNEL);
1498                 if (!new_ie)
1499                         return -ENOMEM;
1500         }
1501         ifmsh->ie_len = setup->ie_len;
1502         ifmsh->ie = new_ie;
1503         kfree(old_ie);
1504
1505         /* now copy the rest of the setup parameters */
1506         ifmsh->mesh_id_len = setup->mesh_id_len;
1507         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1508         ifmsh->mesh_sp_id = setup->sync_method;
1509         ifmsh->mesh_pp_id = setup->path_sel_proto;
1510         ifmsh->mesh_pm_id = setup->path_metric;
1511         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1512         if (setup->is_authenticated)
1513                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1514         if (setup->is_secure)
1515                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1516
1517         /* mcast rate setting in Mesh Node */
1518         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1519                                                 sizeof(setup->mcast_rate));
1520
1521         return 0;
1522 }
1523
1524 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1525                                         struct net_device *dev, u32 mask,
1526                                         const struct mesh_config *nconf)
1527 {
1528         struct mesh_config *conf;
1529         struct ieee80211_sub_if_data *sdata;
1530         struct ieee80211_if_mesh *ifmsh;
1531
1532         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1533         ifmsh = &sdata->u.mesh;
1534
1535         /* Set the config options which we are interested in setting */
1536         conf = &(sdata->u.mesh.mshcfg);
1537         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1538                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1539         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1540                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1541         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1542                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1543         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1544                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1545         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1546                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1547         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1548                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1549         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1550                 conf->element_ttl = nconf->element_ttl;
1551         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1552                 conf->auto_open_plinks = nconf->auto_open_plinks;
1553         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1554                 conf->dot11MeshNbrOffsetMaxNeighbor =
1555                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1556         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1557                 conf->dot11MeshHWMPmaxPREQretries =
1558                         nconf->dot11MeshHWMPmaxPREQretries;
1559         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1560                 conf->path_refresh_time = nconf->path_refresh_time;
1561         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1562                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1563         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1564                 conf->dot11MeshHWMPactivePathTimeout =
1565                         nconf->dot11MeshHWMPactivePathTimeout;
1566         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1567                 conf->dot11MeshHWMPpreqMinInterval =
1568                         nconf->dot11MeshHWMPpreqMinInterval;
1569         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1570                 conf->dot11MeshHWMPperrMinInterval =
1571                         nconf->dot11MeshHWMPperrMinInterval;
1572         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1573                            mask))
1574                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1575                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1576         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1577                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1578                 ieee80211_mesh_root_setup(ifmsh);
1579         }
1580         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1581                 /* our current gate announcement implementation rides on root
1582                  * announcements, so require this ifmsh to also be a root node
1583                  * */
1584                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1585                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1586                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1587                         ieee80211_mesh_root_setup(ifmsh);
1588                 }
1589                 conf->dot11MeshGateAnnouncementProtocol =
1590                         nconf->dot11MeshGateAnnouncementProtocol;
1591         }
1592         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1593                 conf->dot11MeshHWMPRannInterval =
1594                         nconf->dot11MeshHWMPRannInterval;
1595         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1596                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1597         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1598                 /* our RSSI threshold implementation is supported only for
1599                  * devices that report signal in dBm.
1600                  */
1601                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1602                         return -ENOTSUPP;
1603                 conf->rssi_threshold = nconf->rssi_threshold;
1604         }
1605         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1606                 conf->ht_opmode = nconf->ht_opmode;
1607                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1608                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1609         }
1610         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1611                 conf->dot11MeshHWMPactivePathToRootTimeout =
1612                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1613         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1614                 conf->dot11MeshHWMProotInterval =
1615                         nconf->dot11MeshHWMProotInterval;
1616         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1617                 conf->dot11MeshHWMPconfirmationInterval =
1618                         nconf->dot11MeshHWMPconfirmationInterval;
1619         return 0;
1620 }
1621
1622 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1623                                const struct mesh_config *conf,
1624                                const struct mesh_setup *setup)
1625 {
1626         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1627         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1628         int err;
1629
1630         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1631         err = copy_mesh_setup(ifmsh, setup);
1632         if (err)
1633                 return err;
1634
1635         err = ieee80211_set_channel(wiphy, dev, setup->channel,
1636                                     setup->channel_type);
1637         if (err)
1638                 return err;
1639
1640         ieee80211_start_mesh(sdata);
1641
1642         return 0;
1643 }
1644
1645 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1646 {
1647         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1648
1649         ieee80211_stop_mesh(sdata);
1650
1651         return 0;
1652 }
1653 #endif
1654
1655 static int ieee80211_change_bss(struct wiphy *wiphy,
1656                                 struct net_device *dev,
1657                                 struct bss_parameters *params)
1658 {
1659         struct ieee80211_sub_if_data *sdata;
1660         u32 changed = 0;
1661
1662         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1663
1664         if (params->use_cts_prot >= 0) {
1665                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1666                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1667         }
1668         if (params->use_short_preamble >= 0) {
1669                 sdata->vif.bss_conf.use_short_preamble =
1670                         params->use_short_preamble;
1671                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1672         }
1673
1674         if (!sdata->vif.bss_conf.use_short_slot &&
1675             sdata->local->oper_channel->band == IEEE80211_BAND_5GHZ) {
1676                 sdata->vif.bss_conf.use_short_slot = true;
1677                 changed |= BSS_CHANGED_ERP_SLOT;
1678         }
1679
1680         if (params->use_short_slot_time >= 0) {
1681                 sdata->vif.bss_conf.use_short_slot =
1682                         params->use_short_slot_time;
1683                 changed |= BSS_CHANGED_ERP_SLOT;
1684         }
1685
1686         if (params->basic_rates) {
1687                 int i, j;
1688                 u32 rates = 0;
1689                 struct ieee80211_local *local = wiphy_priv(wiphy);
1690                 struct ieee80211_supported_band *sband =
1691                         wiphy->bands[local->oper_channel->band];
1692
1693                 for (i = 0; i < params->basic_rates_len; i++) {
1694                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1695                         for (j = 0; j < sband->n_bitrates; j++) {
1696                                 if (sband->bitrates[j].bitrate == rate)
1697                                         rates |= BIT(j);
1698                         }
1699                 }
1700                 sdata->vif.bss_conf.basic_rates = rates;
1701                 changed |= BSS_CHANGED_BASIC_RATES;
1702         }
1703
1704         if (params->ap_isolate >= 0) {
1705                 if (params->ap_isolate)
1706                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1707                 else
1708                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1709         }
1710
1711         if (params->ht_opmode >= 0) {
1712                 sdata->vif.bss_conf.ht_operation_mode =
1713                         (u16) params->ht_opmode;
1714                 changed |= BSS_CHANGED_HT;
1715         }
1716
1717         ieee80211_bss_info_change_notify(sdata, changed);
1718
1719         return 0;
1720 }
1721
1722 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1723                                     struct net_device *dev,
1724                                     struct ieee80211_txq_params *params)
1725 {
1726         struct ieee80211_local *local = wiphy_priv(wiphy);
1727         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1728         struct ieee80211_tx_queue_params p;
1729
1730         if (!local->ops->conf_tx)
1731                 return -EOPNOTSUPP;
1732
1733         if (local->hw.queues < IEEE80211_NUM_ACS)
1734                 return -EOPNOTSUPP;
1735
1736         memset(&p, 0, sizeof(p));
1737         p.aifs = params->aifs;
1738         p.cw_max = params->cwmax;
1739         p.cw_min = params->cwmin;
1740         p.txop = params->txop;
1741
1742         /*
1743          * Setting tx queue params disables u-apsd because it's only
1744          * called in master mode.
1745          */
1746         p.uapsd = false;
1747
1748         sdata->tx_conf[params->ac] = p;
1749         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1750                 wiphy_debug(local->hw.wiphy,
1751                             "failed to set TX queue parameters for AC %d\n",
1752                             params->ac);
1753                 return -EINVAL;
1754         }
1755
1756         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1757
1758         return 0;
1759 }
1760
1761 #ifdef CONFIG_PM
1762 static int ieee80211_suspend(struct wiphy *wiphy,
1763                              struct cfg80211_wowlan *wowlan)
1764 {
1765         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1766 }
1767
1768 static int ieee80211_resume(struct wiphy *wiphy)
1769 {
1770         return __ieee80211_resume(wiphy_priv(wiphy));
1771 }
1772 #else
1773 #define ieee80211_suspend NULL
1774 #define ieee80211_resume NULL
1775 #endif
1776
1777 static int ieee80211_scan(struct wiphy *wiphy,
1778                           struct cfg80211_scan_request *req)
1779 {
1780         struct ieee80211_sub_if_data *sdata;
1781
1782         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1783
1784         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1785         case NL80211_IFTYPE_STATION:
1786         case NL80211_IFTYPE_ADHOC:
1787         case NL80211_IFTYPE_MESH_POINT:
1788         case NL80211_IFTYPE_P2P_CLIENT:
1789         case NL80211_IFTYPE_P2P_DEVICE:
1790                 break;
1791         case NL80211_IFTYPE_P2P_GO:
1792                 if (sdata->local->ops->hw_scan)
1793                         break;
1794                 /*
1795                  * FIXME: implement NoA while scanning in software,
1796                  * for now fall through to allow scanning only when
1797                  * beaconing hasn't been configured yet
1798                  */
1799         case NL80211_IFTYPE_AP:
1800                 if (sdata->u.ap.beacon)
1801                         return -EOPNOTSUPP;
1802                 break;
1803         default:
1804                 return -EOPNOTSUPP;
1805         }
1806
1807         return ieee80211_request_scan(sdata, req);
1808 }
1809
1810 static int
1811 ieee80211_sched_scan_start(struct wiphy *wiphy,
1812                            struct net_device *dev,
1813                            struct cfg80211_sched_scan_request *req)
1814 {
1815         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1816
1817         if (!sdata->local->ops->sched_scan_start)
1818                 return -EOPNOTSUPP;
1819
1820         return ieee80211_request_sched_scan_start(sdata, req);
1821 }
1822
1823 static int
1824 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1825 {
1826         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1827
1828         if (!sdata->local->ops->sched_scan_stop)
1829                 return -EOPNOTSUPP;
1830
1831         return ieee80211_request_sched_scan_stop(sdata);
1832 }
1833
1834 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1835                           struct cfg80211_auth_request *req)
1836 {
1837         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1838 }
1839
1840 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1841                            struct cfg80211_assoc_request *req)
1842 {
1843         struct ieee80211_local *local = wiphy_priv(wiphy);
1844         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1845
1846         switch (ieee80211_get_channel_mode(local, sdata)) {
1847         case CHAN_MODE_HOPPING:
1848                 return -EBUSY;
1849         case CHAN_MODE_FIXED:
1850                 if (local->oper_channel == req->bss->channel)
1851                         break;
1852                 return -EBUSY;
1853         case CHAN_MODE_UNDEFINED:
1854                 break;
1855         }
1856
1857         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1858 }
1859
1860 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1861                             struct cfg80211_deauth_request *req)
1862 {
1863         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1864 }
1865
1866 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1867                               struct cfg80211_disassoc_request *req)
1868 {
1869         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1870 }
1871
1872 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1873                                struct cfg80211_ibss_params *params)
1874 {
1875         struct ieee80211_local *local = wiphy_priv(wiphy);
1876         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1877
1878         switch (ieee80211_get_channel_mode(local, sdata)) {
1879         case CHAN_MODE_HOPPING:
1880                 return -EBUSY;
1881         case CHAN_MODE_FIXED:
1882                 if (!params->channel_fixed)
1883                         return -EBUSY;
1884                 if (local->oper_channel == params->channel)
1885                         break;
1886                 return -EBUSY;
1887         case CHAN_MODE_UNDEFINED:
1888                 break;
1889         }
1890
1891         return ieee80211_ibss_join(sdata, params);
1892 }
1893
1894 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1895 {
1896         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1897
1898         return ieee80211_ibss_leave(sdata);
1899 }
1900
1901 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1902 {
1903         struct ieee80211_local *local = wiphy_priv(wiphy);
1904         int err;
1905
1906         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1907                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1908
1909                 if (err)
1910                         return err;
1911         }
1912
1913         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1914                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1915
1916                 if (err)
1917                         return err;
1918         }
1919
1920         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1921                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1922
1923                 if (err)
1924                         return err;
1925         }
1926
1927         if (changed & WIPHY_PARAM_RETRY_SHORT)
1928                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1929         if (changed & WIPHY_PARAM_RETRY_LONG)
1930                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1931         if (changed &
1932             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1933                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1934
1935         return 0;
1936 }
1937
1938 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1939                                   enum nl80211_tx_power_setting type, int mbm)
1940 {
1941         struct ieee80211_local *local = wiphy_priv(wiphy);
1942         struct ieee80211_channel *chan = local->oper_channel;
1943         u32 changes = 0;
1944
1945         switch (type) {
1946         case NL80211_TX_POWER_AUTOMATIC:
1947                 local->user_power_level = -1;
1948                 break;
1949         case NL80211_TX_POWER_LIMITED:
1950                 if (mbm < 0 || (mbm % 100))
1951                         return -EOPNOTSUPP;
1952                 local->user_power_level = MBM_TO_DBM(mbm);
1953                 break;
1954         case NL80211_TX_POWER_FIXED:
1955                 if (mbm < 0 || (mbm % 100))
1956                         return -EOPNOTSUPP;
1957                 /* TODO: move to cfg80211 when it knows the channel */
1958                 if (MBM_TO_DBM(mbm) > chan->max_power)
1959                         return -EINVAL;
1960                 local->user_power_level = MBM_TO_DBM(mbm);
1961                 break;
1962         }
1963
1964         ieee80211_hw_config(local, changes);
1965
1966         return 0;
1967 }
1968
1969 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1970 {
1971         struct ieee80211_local *local = wiphy_priv(wiphy);
1972
1973         *dbm = local->hw.conf.power_level;
1974
1975         return 0;
1976 }
1977
1978 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1979                                   const u8 *addr)
1980 {
1981         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982
1983         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1984
1985         return 0;
1986 }
1987
1988 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1989 {
1990         struct ieee80211_local *local = wiphy_priv(wiphy);
1991
1992         drv_rfkill_poll(local);
1993 }
1994
1995 #ifdef CONFIG_NL80211_TESTMODE
1996 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1997 {
1998         struct ieee80211_local *local = wiphy_priv(wiphy);
1999
2000         if (!local->ops->testmode_cmd)
2001                 return -EOPNOTSUPP;
2002
2003         return local->ops->testmode_cmd(&local->hw, data, len);
2004 }
2005
2006 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2007                                    struct sk_buff *skb,
2008                                    struct netlink_callback *cb,
2009                                    void *data, int len)
2010 {
2011         struct ieee80211_local *local = wiphy_priv(wiphy);
2012
2013         if (!local->ops->testmode_dump)
2014                 return -EOPNOTSUPP;
2015
2016         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2017 }
2018 #endif
2019
2020 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2021                              enum ieee80211_smps_mode smps_mode)
2022 {
2023         const u8 *ap;
2024         enum ieee80211_smps_mode old_req;
2025         int err;
2026
2027         lockdep_assert_held(&sdata->u.mgd.mtx);
2028
2029         old_req = sdata->u.mgd.req_smps;
2030         sdata->u.mgd.req_smps = smps_mode;
2031
2032         if (old_req == smps_mode &&
2033             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2034                 return 0;
2035
2036         /*
2037          * If not associated, or current association is not an HT
2038          * association, there's no need to send an action frame.
2039          */
2040         if (!sdata->u.mgd.associated ||
2041             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2042                 mutex_lock(&sdata->local->iflist_mtx);
2043                 ieee80211_recalc_smps(sdata->local);
2044                 mutex_unlock(&sdata->local->iflist_mtx);
2045                 return 0;
2046         }
2047
2048         ap = sdata->u.mgd.associated->bssid;
2049
2050         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2051                 if (sdata->u.mgd.powersave)
2052                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2053                 else
2054                         smps_mode = IEEE80211_SMPS_OFF;
2055         }
2056
2057         /* send SM PS frame to AP */
2058         err = ieee80211_send_smps_action(sdata, smps_mode,
2059                                          ap, ap);
2060         if (err)
2061                 sdata->u.mgd.req_smps = old_req;
2062
2063         return err;
2064 }
2065
2066 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2067                                     bool enabled, int timeout)
2068 {
2069         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2070         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2071
2072         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2073                 return -EOPNOTSUPP;
2074
2075         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2076                 return -EOPNOTSUPP;
2077
2078         if (enabled == sdata->u.mgd.powersave &&
2079             timeout == local->dynamic_ps_forced_timeout)
2080                 return 0;
2081
2082         sdata->u.mgd.powersave = enabled;
2083         local->dynamic_ps_forced_timeout = timeout;
2084
2085         /* no change, but if automatic follow powersave */
2086         mutex_lock(&sdata->u.mgd.mtx);
2087         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2088         mutex_unlock(&sdata->u.mgd.mtx);
2089
2090         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2091                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2092
2093         ieee80211_recalc_ps(local, -1);
2094         ieee80211_recalc_ps_vif(sdata);
2095
2096         return 0;
2097 }
2098
2099 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2100                                          struct net_device *dev,
2101                                          s32 rssi_thold, u32 rssi_hyst)
2102 {
2103         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2104         struct ieee80211_vif *vif = &sdata->vif;
2105         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2106
2107         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2108             rssi_hyst == bss_conf->cqm_rssi_hyst)
2109                 return 0;
2110
2111         bss_conf->cqm_rssi_thold = rssi_thold;
2112         bss_conf->cqm_rssi_hyst = rssi_hyst;
2113
2114         /* tell the driver upon association, unless already associated */
2115         if (sdata->u.mgd.associated &&
2116             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2117                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2118
2119         return 0;
2120 }
2121
2122 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2123                                       struct net_device *dev,
2124                                       const u8 *addr,
2125                                       const struct cfg80211_bitrate_mask *mask)
2126 {
2127         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2128         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2129         int i, ret;
2130
2131         if (!ieee80211_sdata_running(sdata))
2132                 return -ENETDOWN;
2133
2134         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2135                 ret = drv_set_bitrate_mask(local, sdata, mask);
2136                 if (ret)
2137                         return ret;
2138         }
2139
2140         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2141                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2142                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2143                        sizeof(mask->control[i].mcs));
2144         }
2145
2146         return 0;
2147 }
2148
2149 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2150                                     struct ieee80211_sub_if_data *sdata,
2151                                     struct ieee80211_channel *channel,
2152                                     enum nl80211_channel_type channel_type,
2153                                     unsigned int duration, u64 *cookie,
2154                                     struct sk_buff *txskb)
2155 {
2156         struct ieee80211_roc_work *roc, *tmp;
2157         bool queued = false;
2158         int ret;
2159
2160         lockdep_assert_held(&local->mtx);
2161
2162         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2163         if (!roc)
2164                 return -ENOMEM;
2165
2166         roc->chan = channel;
2167         roc->chan_type = channel_type;
2168         roc->duration = duration;
2169         roc->req_duration = duration;
2170         roc->frame = txskb;
2171         roc->mgmt_tx_cookie = (unsigned long)txskb;
2172         roc->sdata = sdata;
2173         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2174         INIT_LIST_HEAD(&roc->dependents);
2175
2176         /* if there's one pending or we're scanning, queue this one */
2177         if (!list_empty(&local->roc_list) || local->scanning)
2178                 goto out_check_combine;
2179
2180         /* if not HW assist, just queue & schedule work */
2181         if (!local->ops->remain_on_channel) {
2182                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2183                 goto out_queue;
2184         }
2185
2186         /* otherwise actually kick it off here (for error handling) */
2187
2188         /*
2189          * If the duration is zero, then the driver
2190          * wouldn't actually do anything. Set it to
2191          * 10 for now.
2192          *
2193          * TODO: cancel the off-channel operation
2194          *       when we get the SKB's TX status and
2195          *       the wait time was zero before.
2196          */
2197         if (!duration)
2198                 duration = 10;
2199
2200         ret = drv_remain_on_channel(local, channel, channel_type, duration);
2201         if (ret) {
2202                 kfree(roc);
2203                 return ret;
2204         }
2205
2206         roc->started = true;
2207         goto out_queue;
2208
2209  out_check_combine:
2210         list_for_each_entry(tmp, &local->roc_list, list) {
2211                 if (tmp->chan != channel || tmp->chan_type != channel_type)
2212                         continue;
2213
2214                 /*
2215                  * Extend this ROC if possible:
2216                  *
2217                  * If it hasn't started yet, just increase the duration
2218                  * and add the new one to the list of dependents.
2219                  */
2220                 if (!tmp->started) {
2221                         list_add_tail(&roc->list, &tmp->dependents);
2222                         tmp->duration = max(tmp->duration, roc->duration);
2223                         queued = true;
2224                         break;
2225                 }
2226
2227                 /* If it has already started, it's more difficult ... */
2228                 if (local->ops->remain_on_channel) {
2229                         unsigned long j = jiffies;
2230
2231                         /*
2232                          * In the offloaded ROC case, if it hasn't begun, add
2233                          * this new one to the dependent list to be handled
2234                          * when the the master one begins. If it has begun,
2235                          * check that there's still a minimum time left and
2236                          * if so, start this one, transmitting the frame, but
2237                          * add it to the list directly after this one with a
2238                          * a reduced time so we'll ask the driver to execute
2239                          * it right after finishing the previous one, in the
2240                          * hope that it'll also be executed right afterwards,
2241                          * effectively extending the old one.
2242                          * If there's no minimum time left, just add it to the
2243                          * normal list.
2244                          */
2245                         if (!tmp->hw_begun) {
2246                                 list_add_tail(&roc->list, &tmp->dependents);
2247                                 queued = true;
2248                                 break;
2249                         }
2250
2251                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2252                                         tmp->hw_start_time +
2253                                         msecs_to_jiffies(tmp->duration))) {
2254                                 int new_dur;
2255
2256                                 ieee80211_handle_roc_started(roc);
2257
2258                                 new_dur = roc->duration -
2259                                           jiffies_to_msecs(tmp->hw_start_time +
2260                                                            msecs_to_jiffies(
2261                                                                 tmp->duration) -
2262                                                            j);
2263
2264                                 if (new_dur > 0) {
2265                                         /* add right after tmp */
2266                                         list_add(&roc->list, &tmp->list);
2267                                 } else {
2268                                         list_add_tail(&roc->list,
2269                                                       &tmp->dependents);
2270                                 }
2271                                 queued = true;
2272                         }
2273                 } else if (del_timer_sync(&tmp->work.timer)) {
2274                         unsigned long new_end;
2275
2276                         /*
2277                          * In the software ROC case, cancel the timer, if
2278                          * that fails then the finish work is already
2279                          * queued/pending and thus we queue the new ROC
2280                          * normally, if that succeeds then we can extend
2281                          * the timer duration and TX the frame (if any.)
2282                          */
2283
2284                         list_add_tail(&roc->list, &tmp->dependents);
2285                         queued = true;
2286
2287                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2288
2289                         /* ok, it was started & we canceled timer */
2290                         if (time_after(new_end, tmp->work.timer.expires))
2291                                 mod_timer(&tmp->work.timer, new_end);
2292                         else
2293                                 add_timer(&tmp->work.timer);
2294
2295                         ieee80211_handle_roc_started(roc);
2296                 }
2297                 break;
2298         }
2299
2300  out_queue:
2301         if (!queued)
2302                 list_add_tail(&roc->list, &local->roc_list);
2303
2304         /*
2305          * cookie is either the roc (for normal roc)
2306          * or the SKB (for mgmt TX)
2307          */
2308         if (txskb)
2309                 *cookie = (unsigned long)txskb;
2310         else
2311                 *cookie = (unsigned long)roc;
2312
2313         return 0;
2314 }
2315
2316 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2317                                        struct wireless_dev *wdev,
2318                                        struct ieee80211_channel *chan,
2319                                        enum nl80211_channel_type channel_type,
2320                                        unsigned int duration,
2321                                        u64 *cookie)
2322 {
2323         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2324         struct ieee80211_local *local = sdata->local;
2325         int ret;
2326
2327         mutex_lock(&local->mtx);
2328         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2329                                        duration, cookie, NULL);
2330         mutex_unlock(&local->mtx);
2331
2332         return ret;
2333 }
2334
2335 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2336                                 u64 cookie, bool mgmt_tx)
2337 {
2338         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2339         int ret;
2340
2341         mutex_lock(&local->mtx);
2342         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2343                 struct ieee80211_roc_work *dep, *tmp2;
2344
2345                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2346                         if (!mgmt_tx && (unsigned long)dep != cookie)
2347                                 continue;
2348                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2349                                 continue;
2350                         /* found dependent item -- just remove it */
2351                         list_del(&dep->list);
2352                         mutex_unlock(&local->mtx);
2353
2354                         ieee80211_roc_notify_destroy(dep);
2355                         return 0;
2356                 }
2357
2358                 if (!mgmt_tx && (unsigned long)roc != cookie)
2359                         continue;
2360                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2361                         continue;
2362
2363                 found = roc;
2364                 break;
2365         }
2366
2367         if (!found) {
2368                 mutex_unlock(&local->mtx);
2369                 return -ENOENT;
2370         }
2371
2372         /*
2373          * We found the item to cancel, so do that. Note that it
2374          * may have dependents, which we also cancel (and send
2375          * the expired signal for.) Not doing so would be quite
2376          * tricky here, but we may need to fix it later.
2377          */
2378
2379         if (local->ops->remain_on_channel) {
2380                 if (found->started) {
2381                         ret = drv_cancel_remain_on_channel(local);
2382                         if (WARN_ON_ONCE(ret)) {
2383                                 mutex_unlock(&local->mtx);
2384                                 return ret;
2385                         }
2386                 }
2387
2388                 list_del(&found->list);
2389
2390                 if (found->started)
2391                         ieee80211_start_next_roc(local);
2392                 mutex_unlock(&local->mtx);
2393
2394                 ieee80211_roc_notify_destroy(found);
2395         } else {
2396                 /* work may be pending so use it all the time */
2397                 found->abort = true;
2398                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2399
2400                 mutex_unlock(&local->mtx);
2401
2402                 /* work will clean up etc */
2403                 flush_delayed_work(&found->work);
2404         }
2405
2406         return 0;
2407 }
2408
2409 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2410                                               struct wireless_dev *wdev,
2411                                               u64 cookie)
2412 {
2413         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2414         struct ieee80211_local *local = sdata->local;
2415
2416         return ieee80211_cancel_roc(local, cookie, false);
2417 }
2418
2419 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2420                              struct ieee80211_channel *chan, bool offchan,
2421                              enum nl80211_channel_type channel_type,
2422                              bool channel_type_valid, unsigned int wait,
2423                              const u8 *buf, size_t len, bool no_cck,
2424                              bool dont_wait_for_ack, u64 *cookie)
2425 {
2426         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2427         struct ieee80211_local *local = sdata->local;
2428         struct sk_buff *skb;
2429         struct sta_info *sta;
2430         const struct ieee80211_mgmt *mgmt = (void *)buf;
2431         bool need_offchan = false;
2432         u32 flags;
2433         int ret;
2434
2435         if (dont_wait_for_ack)
2436                 flags = IEEE80211_TX_CTL_NO_ACK;
2437         else
2438                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2439                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2440
2441         if (no_cck)
2442                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2443
2444         switch (sdata->vif.type) {
2445         case NL80211_IFTYPE_ADHOC:
2446                 if (!sdata->vif.bss_conf.ibss_joined)
2447                         need_offchan = true;
2448                 /* fall through */
2449 #ifdef CONFIG_MAC80211_MESH
2450         case NL80211_IFTYPE_MESH_POINT:
2451                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2452                     !sdata->u.mesh.mesh_id_len)
2453                         need_offchan = true;
2454                 /* fall through */
2455 #endif
2456         case NL80211_IFTYPE_AP:
2457         case NL80211_IFTYPE_AP_VLAN:
2458         case NL80211_IFTYPE_P2P_GO:
2459                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2460                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2461                     !rcu_access_pointer(sdata->bss->beacon))
2462                         need_offchan = true;
2463                 if (!ieee80211_is_action(mgmt->frame_control) ||
2464                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2465                         break;
2466                 rcu_read_lock();
2467                 sta = sta_info_get(sdata, mgmt->da);
2468                 rcu_read_unlock();
2469                 if (!sta)
2470                         return -ENOLINK;
2471                 break;
2472         case NL80211_IFTYPE_STATION:
2473         case NL80211_IFTYPE_P2P_CLIENT:
2474                 if (!sdata->u.mgd.associated)
2475                         need_offchan = true;
2476                 break;
2477         case NL80211_IFTYPE_P2P_DEVICE:
2478                 need_offchan = true;
2479                 break;
2480         default:
2481                 return -EOPNOTSUPP;
2482         }
2483
2484         mutex_lock(&local->mtx);
2485
2486         /* Check if the operating channel is the requested channel */
2487         if (!need_offchan) {
2488                 need_offchan = chan != local->oper_channel;
2489                 if (channel_type_valid &&
2490                     channel_type != local->_oper_channel_type)
2491                         need_offchan = true;
2492         }
2493
2494         if (need_offchan && !offchan) {
2495                 ret = -EBUSY;
2496                 goto out_unlock;
2497         }
2498
2499         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2500         if (!skb) {
2501                 ret = -ENOMEM;
2502                 goto out_unlock;
2503         }
2504         skb_reserve(skb, local->hw.extra_tx_headroom);
2505
2506         memcpy(skb_put(skb, len), buf, len);
2507
2508         IEEE80211_SKB_CB(skb)->flags = flags;
2509
2510         skb->dev = sdata->dev;
2511
2512         if (!need_offchan) {
2513                 *cookie = (unsigned long) skb;
2514                 ieee80211_tx_skb(sdata, skb);
2515                 ret = 0;
2516                 goto out_unlock;
2517         }
2518
2519         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2520         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2521                 IEEE80211_SKB_CB(skb)->hw_queue =
2522                         local->hw.offchannel_tx_hw_queue;
2523
2524         /* This will handle all kinds of coalescing and immediate TX */
2525         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2526                                        wait, cookie, skb);
2527         if (ret)
2528                 kfree_skb(skb);
2529  out_unlock:
2530         mutex_unlock(&local->mtx);
2531         return ret;
2532 }
2533
2534 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2535                                          struct wireless_dev *wdev,
2536                                          u64 cookie)
2537 {
2538         struct ieee80211_local *local = wiphy_priv(wiphy);
2539
2540         return ieee80211_cancel_roc(local, cookie, true);
2541 }
2542
2543 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2544                                           struct wireless_dev *wdev,
2545                                           u16 frame_type, bool reg)
2546 {
2547         struct ieee80211_local *local = wiphy_priv(wiphy);
2548         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2549
2550         switch (frame_type) {
2551         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2552                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2553                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2554
2555                         if (reg)
2556                                 ifibss->auth_frame_registrations++;
2557                         else
2558                                 ifibss->auth_frame_registrations--;
2559                 }
2560                 break;
2561         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2562                 if (reg)
2563                         local->probe_req_reg++;
2564                 else
2565                         local->probe_req_reg--;
2566
2567                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2568                 break;
2569         default:
2570                 break;
2571         }
2572 }
2573
2574 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2575 {
2576         struct ieee80211_local *local = wiphy_priv(wiphy);
2577
2578         if (local->started)
2579                 return -EOPNOTSUPP;
2580
2581         return drv_set_antenna(local, tx_ant, rx_ant);
2582 }
2583
2584 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2585 {
2586         struct ieee80211_local *local = wiphy_priv(wiphy);
2587
2588         return drv_get_antenna(local, tx_ant, rx_ant);
2589 }
2590
2591 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2592 {
2593         struct ieee80211_local *local = wiphy_priv(wiphy);
2594
2595         return drv_set_ringparam(local, tx, rx);
2596 }
2597
2598 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2599                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2600 {
2601         struct ieee80211_local *local = wiphy_priv(wiphy);
2602
2603         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2604 }
2605
2606 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2607                                     struct net_device *dev,
2608                                     struct cfg80211_gtk_rekey_data *data)
2609 {
2610         struct ieee80211_local *local = wiphy_priv(wiphy);
2611         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2612
2613         if (!local->ops->set_rekey_data)
2614                 return -EOPNOTSUPP;
2615
2616         drv_set_rekey_data(local, sdata, data);
2617
2618         return 0;
2619 }
2620
2621 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2622 {
2623         u8 *pos = (void *)skb_put(skb, 7);
2624
2625         *pos++ = WLAN_EID_EXT_CAPABILITY;
2626         *pos++ = 5; /* len */
2627         *pos++ = 0x0;
2628         *pos++ = 0x0;
2629         *pos++ = 0x0;
2630         *pos++ = 0x0;
2631         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2632 }
2633
2634 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2635 {
2636         struct ieee80211_local *local = sdata->local;
2637         u16 capab;
2638
2639         capab = 0;
2640         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2641                 return capab;
2642
2643         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2644                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2645         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2646                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2647
2648         return capab;
2649 }
2650
2651 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2652                                        u8 *peer, u8 *bssid)
2653 {
2654         struct ieee80211_tdls_lnkie *lnkid;
2655
2656         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2657
2658         lnkid->ie_type = WLAN_EID_LINK_ID;
2659         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2660
2661         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2662         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2663         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2664 }
2665
2666 static int
2667 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2668                                u8 *peer, u8 action_code, u8 dialog_token,
2669                                u16 status_code, struct sk_buff *skb)
2670 {
2671         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2672         struct ieee80211_local *local = sdata->local;
2673         struct ieee80211_tdls_data *tf;
2674
2675         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2676
2677         memcpy(tf->da, peer, ETH_ALEN);
2678         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2679         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2680         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2681
2682         switch (action_code) {
2683         case WLAN_TDLS_SETUP_REQUEST:
2684                 tf->category = WLAN_CATEGORY_TDLS;
2685                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2686
2687                 skb_put(skb, sizeof(tf->u.setup_req));
2688                 tf->u.setup_req.dialog_token = dialog_token;
2689                 tf->u.setup_req.capability =
2690                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2691
2692                 ieee80211_add_srates_ie(sdata, skb, false,
2693                                         local->oper_channel->band);
2694                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2695                                             local->oper_channel->band);
2696                 ieee80211_tdls_add_ext_capab(skb);
2697                 break;
2698         case WLAN_TDLS_SETUP_RESPONSE:
2699                 tf->category = WLAN_CATEGORY_TDLS;
2700                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2701
2702                 skb_put(skb, sizeof(tf->u.setup_resp));
2703                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2704                 tf->u.setup_resp.dialog_token = dialog_token;
2705                 tf->u.setup_resp.capability =
2706                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2707
2708                 ieee80211_add_srates_ie(sdata, skb, false,
2709                                         local->oper_channel->band);
2710                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2711                                             local->oper_channel->band);
2712                 ieee80211_tdls_add_ext_capab(skb);
2713                 break;
2714         case WLAN_TDLS_SETUP_CONFIRM:
2715                 tf->category = WLAN_CATEGORY_TDLS;
2716                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2717
2718                 skb_put(skb, sizeof(tf->u.setup_cfm));
2719                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2720                 tf->u.setup_cfm.dialog_token = dialog_token;
2721                 break;
2722         case WLAN_TDLS_TEARDOWN:
2723                 tf->category = WLAN_CATEGORY_TDLS;
2724                 tf->action_code = WLAN_TDLS_TEARDOWN;
2725
2726                 skb_put(skb, sizeof(tf->u.teardown));
2727                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2728                 break;
2729         case WLAN_TDLS_DISCOVERY_REQUEST:
2730                 tf->category = WLAN_CATEGORY_TDLS;
2731                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2732
2733                 skb_put(skb, sizeof(tf->u.discover_req));
2734                 tf->u.discover_req.dialog_token = dialog_token;
2735                 break;
2736         default:
2737                 return -EINVAL;
2738         }
2739
2740         return 0;
2741 }
2742
2743 static int
2744 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2745                            u8 *peer, u8 action_code, u8 dialog_token,
2746                            u16 status_code, struct sk_buff *skb)
2747 {
2748         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2749         struct ieee80211_local *local = sdata->local;
2750         struct ieee80211_mgmt *mgmt;
2751
2752         mgmt = (void *)skb_put(skb, 24);
2753         memset(mgmt, 0, 24);
2754         memcpy(mgmt->da, peer, ETH_ALEN);
2755         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2756         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2757
2758         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2759                                           IEEE80211_STYPE_ACTION);
2760
2761         switch (action_code) {
2762         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2763                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2764                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2765                 mgmt->u.action.u.tdls_discover_resp.action_code =
2766                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2767                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2768                         dialog_token;
2769                 mgmt->u.action.u.tdls_discover_resp.capability =
2770                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2771
2772                 ieee80211_add_srates_ie(sdata, skb, false,
2773                                         local->oper_channel->band);
2774                 ieee80211_add_ext_srates_ie(sdata, skb, false,
2775                                             local->oper_channel->band);
2776                 ieee80211_tdls_add_ext_capab(skb);
2777                 break;
2778         default:
2779                 return -EINVAL;
2780         }
2781
2782         return 0;
2783 }
2784
2785 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2786                                u8 *peer, u8 action_code, u8 dialog_token,
2787                                u16 status_code, const u8 *extra_ies,
2788                                size_t extra_ies_len)
2789 {
2790         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2791         struct ieee80211_local *local = sdata->local;
2792         struct ieee80211_tx_info *info;
2793         struct sk_buff *skb = NULL;
2794         bool send_direct;
2795         int ret;
2796
2797         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2798                 return -ENOTSUPP;
2799
2800         /* make sure we are in managed mode, and associated */
2801         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2802             !sdata->u.mgd.associated)
2803                 return -EINVAL;
2804
2805         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2806                  action_code, peer);
2807
2808         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2809                             max(sizeof(struct ieee80211_mgmt),
2810                                 sizeof(struct ieee80211_tdls_data)) +
2811                             50 + /* supported rates */
2812                             7 + /* ext capab */
2813                             extra_ies_len +
2814                             sizeof(struct ieee80211_tdls_lnkie));
2815         if (!skb)
2816                 return -ENOMEM;
2817
2818         info = IEEE80211_SKB_CB(skb);
2819         skb_reserve(skb, local->hw.extra_tx_headroom);
2820
2821         switch (action_code) {
2822         case WLAN_TDLS_SETUP_REQUEST:
2823         case WLAN_TDLS_SETUP_RESPONSE:
2824         case WLAN_TDLS_SETUP_CONFIRM:
2825         case WLAN_TDLS_TEARDOWN:
2826         case WLAN_TDLS_DISCOVERY_REQUEST:
2827                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2828                                                      action_code, dialog_token,
2829                                                      status_code, skb);
2830                 send_direct = false;
2831                 break;
2832         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2833                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2834                                                  dialog_token, status_code,
2835                                                  skb);
2836                 send_direct = true;
2837                 break;
2838         default:
2839                 ret = -ENOTSUPP;
2840                 break;
2841         }
2842
2843         if (ret < 0)
2844                 goto fail;
2845
2846         if (extra_ies_len)
2847                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2848
2849         /* the TDLS link IE is always added last */
2850         switch (action_code) {
2851         case WLAN_TDLS_SETUP_REQUEST:
2852         case WLAN_TDLS_SETUP_CONFIRM:
2853         case WLAN_TDLS_TEARDOWN:
2854         case WLAN_TDLS_DISCOVERY_REQUEST:
2855                 /* we are the initiator */
2856                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2857                                            sdata->u.mgd.bssid);
2858                 break;
2859         case WLAN_TDLS_SETUP_RESPONSE:
2860         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2861                 /* we are the responder */
2862                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2863                                            sdata->u.mgd.bssid);
2864                 break;
2865         default:
2866                 ret = -ENOTSUPP;
2867                 goto fail;
2868         }
2869
2870         if (send_direct) {
2871                 ieee80211_tx_skb(sdata, skb);
2872                 return 0;
2873         }
2874
2875         /*
2876          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2877          * we should default to AC_VI.
2878          */
2879         switch (action_code) {
2880         case WLAN_TDLS_SETUP_REQUEST:
2881         case WLAN_TDLS_SETUP_RESPONSE:
2882                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2883                 skb->priority = 2;
2884                 break;
2885         default:
2886                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2887                 skb->priority = 5;
2888                 break;
2889         }
2890
2891         /* disable bottom halves when entering the Tx path */
2892         local_bh_disable();
2893         ret = ieee80211_subif_start_xmit(skb, dev);
2894         local_bh_enable();
2895
2896         return ret;
2897
2898 fail:
2899         dev_kfree_skb(skb);
2900         return ret;
2901 }
2902
2903 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2904                                u8 *peer, enum nl80211_tdls_operation oper)
2905 {
2906         struct sta_info *sta;
2907         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2908
2909         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2910                 return -ENOTSUPP;
2911
2912         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2913                 return -EINVAL;
2914
2915         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2916
2917         switch (oper) {
2918         case NL80211_TDLS_ENABLE_LINK:
2919                 rcu_read_lock();
2920                 sta = sta_info_get(sdata, peer);
2921                 if (!sta) {
2922                         rcu_read_unlock();
2923                         return -ENOLINK;
2924                 }
2925
2926                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2927                 rcu_read_unlock();
2928                 break;
2929         case NL80211_TDLS_DISABLE_LINK:
2930                 return sta_info_destroy_addr(sdata, peer);
2931         case NL80211_TDLS_TEARDOWN:
2932         case NL80211_TDLS_SETUP:
2933         case NL80211_TDLS_DISCOVERY_REQ:
2934                 /* We don't support in-driver setup/teardown/discovery */
2935                 return -ENOTSUPP;
2936         default:
2937                 return -ENOTSUPP;
2938         }
2939
2940         return 0;
2941 }
2942
2943 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2944                                   const u8 *peer, u64 *cookie)
2945 {
2946         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2947         struct ieee80211_local *local = sdata->local;
2948         struct ieee80211_qos_hdr *nullfunc;
2949         struct sk_buff *skb;
2950         int size = sizeof(*nullfunc);
2951         __le16 fc;
2952         bool qos;
2953         struct ieee80211_tx_info *info;
2954         struct sta_info *sta;
2955
2956         rcu_read_lock();
2957         sta = sta_info_get(sdata, peer);
2958         if (sta) {
2959                 qos = test_sta_flag(sta, WLAN_STA_WME);
2960                 rcu_read_unlock();
2961         } else {
2962                 rcu_read_unlock();
2963                 return -ENOLINK;
2964         }
2965
2966         if (qos) {
2967                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2968                                  IEEE80211_STYPE_QOS_NULLFUNC |
2969                                  IEEE80211_FCTL_FROMDS);
2970         } else {
2971                 size -= 2;
2972                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2973                                  IEEE80211_STYPE_NULLFUNC |
2974                                  IEEE80211_FCTL_FROMDS);
2975         }
2976
2977         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2978         if (!skb)
2979                 return -ENOMEM;
2980
2981         skb->dev = dev;
2982
2983         skb_reserve(skb, local->hw.extra_tx_headroom);
2984
2985         nullfunc = (void *) skb_put(skb, size);
2986         nullfunc->frame_control = fc;
2987         nullfunc->duration_id = 0;
2988         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2989         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2990         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2991         nullfunc->seq_ctrl = 0;
2992
2993         info = IEEE80211_SKB_CB(skb);
2994
2995         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2996                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2997
2998         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2999         skb->priority = 7;
3000         if (qos)
3001                 nullfunc->qos_ctrl = cpu_to_le16(7);
3002
3003         local_bh_disable();
3004         ieee80211_xmit(sdata, skb);
3005         local_bh_enable();
3006
3007         *cookie = (unsigned long) skb;
3008         return 0;
3009 }
3010
3011 static struct ieee80211_channel *
3012 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
3013                           enum nl80211_channel_type *type)
3014 {
3015         struct ieee80211_local *local = wiphy_priv(wiphy);
3016
3017         *type = local->_oper_channel_type;
3018         return local->oper_channel;
3019 }
3020
3021 #ifdef CONFIG_PM
3022 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3023 {
3024         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3025 }
3026 #endif
3027
3028 struct cfg80211_ops mac80211_config_ops = {
3029         .add_virtual_intf = ieee80211_add_iface,
3030         .del_virtual_intf = ieee80211_del_iface,
3031         .change_virtual_intf = ieee80211_change_iface,
3032         .start_p2p_device = ieee80211_start_p2p_device,
3033         .stop_p2p_device = ieee80211_stop_p2p_device,
3034         .add_key = ieee80211_add_key,
3035         .del_key = ieee80211_del_key,
3036         .get_key = ieee80211_get_key,
3037         .set_default_key = ieee80211_config_default_key,
3038         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3039         .start_ap = ieee80211_start_ap,
3040         .change_beacon = ieee80211_change_beacon,
3041         .stop_ap = ieee80211_stop_ap,
3042         .add_station = ieee80211_add_station,
3043         .del_station = ieee80211_del_station,
3044         .change_station = ieee80211_change_station,
3045         .get_station = ieee80211_get_station,
3046         .dump_station = ieee80211_dump_station,
3047         .dump_survey = ieee80211_dump_survey,
3048 #ifdef CONFIG_MAC80211_MESH
3049         .add_mpath = ieee80211_add_mpath,
3050         .del_mpath = ieee80211_del_mpath,
3051         .change_mpath = ieee80211_change_mpath,
3052         .get_mpath = ieee80211_get_mpath,
3053         .dump_mpath = ieee80211_dump_mpath,
3054         .update_mesh_config = ieee80211_update_mesh_config,
3055         .get_mesh_config = ieee80211_get_mesh_config,
3056         .join_mesh = ieee80211_join_mesh,
3057         .leave_mesh = ieee80211_leave_mesh,
3058 #endif
3059         .change_bss = ieee80211_change_bss,
3060         .set_txq_params = ieee80211_set_txq_params,
3061         .set_monitor_channel = ieee80211_set_monitor_channel,
3062         .suspend = ieee80211_suspend,
3063         .resume = ieee80211_resume,
3064         .scan = ieee80211_scan,
3065         .sched_scan_start = ieee80211_sched_scan_start,
3066         .sched_scan_stop = ieee80211_sched_scan_stop,
3067         .auth = ieee80211_auth,
3068         .assoc = ieee80211_assoc,
3069         .deauth = ieee80211_deauth,
3070         .disassoc = ieee80211_disassoc,
3071         .join_ibss = ieee80211_join_ibss,
3072         .leave_ibss = ieee80211_leave_ibss,
3073         .set_wiphy_params = ieee80211_set_wiphy_params,
3074         .set_tx_power = ieee80211_set_tx_power,
3075         .get_tx_power = ieee80211_get_tx_power,
3076         .set_wds_peer = ieee80211_set_wds_peer,
3077         .rfkill_poll = ieee80211_rfkill_poll,
3078         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3079         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3080         .set_power_mgmt = ieee80211_set_power_mgmt,
3081         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3082         .remain_on_channel = ieee80211_remain_on_channel,
3083         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3084         .mgmt_tx = ieee80211_mgmt_tx,
3085         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3086         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3087         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3088         .set_antenna = ieee80211_set_antenna,
3089         .get_antenna = ieee80211_get_antenna,
3090         .set_ringparam = ieee80211_set_ringparam,
3091         .get_ringparam = ieee80211_get_ringparam,
3092         .set_rekey_data = ieee80211_set_rekey_data,
3093         .tdls_oper = ieee80211_tdls_oper,
3094         .tdls_mgmt = ieee80211_tdls_mgmt,
3095         .probe_client = ieee80211_probe_client,
3096         .set_noack_map = ieee80211_set_noack_map,
3097 #ifdef CONFIG_PM
3098         .set_wakeup = ieee80211_set_wakeup,
3099 #endif
3100         .get_et_sset_count = ieee80211_get_et_sset_count,
3101         .get_et_stats = ieee80211_get_et_stats,
3102         .get_et_strings = ieee80211_get_et_strings,
3103         .get_channel = ieee80211_cfg_get_channel,
3104 };