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