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         memset(pinfo, 0, sizeof(*pinfo));
1382
1383         pinfo->generation = mesh_paths_generation;
1384
1385         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1386                         MPATH_INFO_SN |
1387                         MPATH_INFO_METRIC |
1388                         MPATH_INFO_EXPTIME |
1389                         MPATH_INFO_DISCOVERY_TIMEOUT |
1390                         MPATH_INFO_DISCOVERY_RETRIES |
1391                         MPATH_INFO_FLAGS;
1392
1393         pinfo->frame_qlen = mpath->frame_queue.qlen;
1394         pinfo->sn = mpath->sn;
1395         pinfo->metric = mpath->metric;
1396         if (time_before(jiffies, mpath->exp_time))
1397                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1398         pinfo->discovery_timeout =
1399                         jiffies_to_msecs(mpath->discovery_timeout);
1400         pinfo->discovery_retries = mpath->discovery_retries;
1401         if (mpath->flags & MESH_PATH_ACTIVE)
1402                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1403         if (mpath->flags & MESH_PATH_RESOLVING)
1404                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1405         if (mpath->flags & MESH_PATH_SN_VALID)
1406                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1407         if (mpath->flags & MESH_PATH_FIXED)
1408                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1409         if (mpath->flags & MESH_PATH_RESOLVED)
1410                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1411 }
1412
1413 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1414                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1415
1416 {
1417         struct ieee80211_sub_if_data *sdata;
1418         struct mesh_path *mpath;
1419
1420         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1421
1422         rcu_read_lock();
1423         mpath = mesh_path_lookup(dst, sdata);
1424         if (!mpath) {
1425                 rcu_read_unlock();
1426                 return -ENOENT;
1427         }
1428         memcpy(dst, mpath->dst, ETH_ALEN);
1429         mpath_set_pinfo(mpath, next_hop, pinfo);
1430         rcu_read_unlock();
1431         return 0;
1432 }
1433
1434 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1435                                  int idx, u8 *dst, u8 *next_hop,
1436                                  struct mpath_info *pinfo)
1437 {
1438         struct ieee80211_sub_if_data *sdata;
1439         struct mesh_path *mpath;
1440
1441         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1442
1443         rcu_read_lock();
1444         mpath = mesh_path_lookup_by_idx(idx, sdata);
1445         if (!mpath) {
1446                 rcu_read_unlock();
1447                 return -ENOENT;
1448         }
1449         memcpy(dst, mpath->dst, ETH_ALEN);
1450         mpath_set_pinfo(mpath, next_hop, pinfo);
1451         rcu_read_unlock();
1452         return 0;
1453 }
1454
1455 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1456                                 struct net_device *dev,
1457                                 struct mesh_config *conf)
1458 {
1459         struct ieee80211_sub_if_data *sdata;
1460         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1461
1462         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1463         return 0;
1464 }
1465
1466 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1467 {
1468         return (mask >> (parm-1)) & 0x1;
1469 }
1470
1471 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1472                 const struct mesh_setup *setup)
1473 {
1474         u8 *new_ie;
1475         const u8 *old_ie;
1476         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1477                                         struct ieee80211_sub_if_data, u.mesh);
1478
1479         /* allocate information elements */
1480         new_ie = NULL;
1481         old_ie = ifmsh->ie;
1482
1483         if (setup->ie_len) {
1484                 new_ie = kmemdup(setup->ie, setup->ie_len,
1485                                 GFP_KERNEL);
1486                 if (!new_ie)
1487                         return -ENOMEM;
1488         }
1489         ifmsh->ie_len = setup->ie_len;
1490         ifmsh->ie = new_ie;
1491         kfree(old_ie);
1492
1493         /* now copy the rest of the setup parameters */
1494         ifmsh->mesh_id_len = setup->mesh_id_len;
1495         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1496         ifmsh->mesh_sp_id = setup->sync_method;
1497         ifmsh->mesh_pp_id = setup->path_sel_proto;
1498         ifmsh->mesh_pm_id = setup->path_metric;
1499         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1500         if (setup->is_authenticated)
1501                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1502         if (setup->is_secure)
1503                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1504
1505         /* mcast rate setting in Mesh Node */
1506         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1507                                                 sizeof(setup->mcast_rate));
1508
1509         return 0;
1510 }
1511
1512 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1513                                         struct net_device *dev, u32 mask,
1514                                         const struct mesh_config *nconf)
1515 {
1516         struct mesh_config *conf;
1517         struct ieee80211_sub_if_data *sdata;
1518         struct ieee80211_if_mesh *ifmsh;
1519
1520         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1521         ifmsh = &sdata->u.mesh;
1522
1523         /* Set the config options which we are interested in setting */
1524         conf = &(sdata->u.mesh.mshcfg);
1525         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1526                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1527         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1528                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1529         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1530                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1531         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1532                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1533         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1534                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1535         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1536                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1537         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1538                 conf->element_ttl = nconf->element_ttl;
1539         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1540                 conf->auto_open_plinks = nconf->auto_open_plinks;
1541         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1542                 conf->dot11MeshNbrOffsetMaxNeighbor =
1543                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1544         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1545                 conf->dot11MeshHWMPmaxPREQretries =
1546                         nconf->dot11MeshHWMPmaxPREQretries;
1547         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1548                 conf->path_refresh_time = nconf->path_refresh_time;
1549         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1550                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1551         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1552                 conf->dot11MeshHWMPactivePathTimeout =
1553                         nconf->dot11MeshHWMPactivePathTimeout;
1554         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1555                 conf->dot11MeshHWMPpreqMinInterval =
1556                         nconf->dot11MeshHWMPpreqMinInterval;
1557         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1558                 conf->dot11MeshHWMPperrMinInterval =
1559                         nconf->dot11MeshHWMPperrMinInterval;
1560         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1561                            mask))
1562                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1563                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1564         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1565                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1566                 ieee80211_mesh_root_setup(ifmsh);
1567         }
1568         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1569                 /* our current gate announcement implementation rides on root
1570                  * announcements, so require this ifmsh to also be a root node
1571                  * */
1572                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1573                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1574                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1575                         ieee80211_mesh_root_setup(ifmsh);
1576                 }
1577                 conf->dot11MeshGateAnnouncementProtocol =
1578                         nconf->dot11MeshGateAnnouncementProtocol;
1579         }
1580         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1581                 conf->dot11MeshHWMPRannInterval =
1582                         nconf->dot11MeshHWMPRannInterval;
1583         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1584                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1585         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1586                 /* our RSSI threshold implementation is supported only for
1587                  * devices that report signal in dBm.
1588                  */
1589                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1590                         return -ENOTSUPP;
1591                 conf->rssi_threshold = nconf->rssi_threshold;
1592         }
1593         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1594                 conf->ht_opmode = nconf->ht_opmode;
1595                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1596                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1597         }
1598         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1599                 conf->dot11MeshHWMPactivePathToRootTimeout =
1600                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1601         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1602                 conf->dot11MeshHWMProotInterval =
1603                         nconf->dot11MeshHWMProotInterval;
1604         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1605                 conf->dot11MeshHWMPconfirmationInterval =
1606                         nconf->dot11MeshHWMPconfirmationInterval;
1607         return 0;
1608 }
1609
1610 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1611                                const struct mesh_config *conf,
1612                                const struct mesh_setup *setup)
1613 {
1614         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1615         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1616         int err;
1617
1618         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1619         err = copy_mesh_setup(ifmsh, setup);
1620         if (err)
1621                 return err;
1622
1623         err = ieee80211_set_channel(wiphy, dev, setup->channel,
1624                                     setup->channel_type);
1625         if (err)
1626                 return err;
1627
1628         ieee80211_start_mesh(sdata);
1629
1630         return 0;
1631 }
1632
1633 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1634 {
1635         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1636
1637         ieee80211_stop_mesh(sdata);
1638
1639         return 0;
1640 }
1641 #endif
1642
1643 static int ieee80211_change_bss(struct wiphy *wiphy,
1644                                 struct net_device *dev,
1645                                 struct bss_parameters *params)
1646 {
1647         struct ieee80211_sub_if_data *sdata;
1648         u32 changed = 0;
1649
1650         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1651
1652         if (params->use_cts_prot >= 0) {
1653                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1654                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1655         }
1656         if (params->use_short_preamble >= 0) {
1657                 sdata->vif.bss_conf.use_short_preamble =
1658                         params->use_short_preamble;
1659                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1660         }
1661
1662         if (!sdata->vif.bss_conf.use_short_slot &&
1663             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1664                 sdata->vif.bss_conf.use_short_slot = true;
1665                 changed |= BSS_CHANGED_ERP_SLOT;
1666         }
1667
1668         if (params->use_short_slot_time >= 0) {
1669                 sdata->vif.bss_conf.use_short_slot =
1670                         params->use_short_slot_time;
1671                 changed |= BSS_CHANGED_ERP_SLOT;
1672         }
1673
1674         if (params->basic_rates) {
1675                 int i, j;
1676                 u32 rates = 0;
1677                 struct ieee80211_local *local = wiphy_priv(wiphy);
1678                 struct ieee80211_supported_band *sband =
1679                         wiphy->bands[local->oper_channel->band];
1680
1681                 for (i = 0; i < params->basic_rates_len; i++) {
1682                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1683                         for (j = 0; j < sband->n_bitrates; j++) {
1684                                 if (sband->bitrates[j].bitrate == rate)
1685                                         rates |= BIT(j);
1686                         }
1687                 }
1688                 sdata->vif.bss_conf.basic_rates = rates;
1689                 changed |= BSS_CHANGED_BASIC_RATES;
1690         }
1691
1692         if (params->ap_isolate >= 0) {
1693                 if (params->ap_isolate)
1694                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1695                 else
1696                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1697         }
1698
1699         if (params->ht_opmode >= 0) {
1700                 sdata->vif.bss_conf.ht_operation_mode =
1701                         (u16) params->ht_opmode;
1702                 changed |= BSS_CHANGED_HT;
1703         }
1704
1705         ieee80211_bss_info_change_notify(sdata, changed);
1706
1707         return 0;
1708 }
1709
1710 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1711                                     struct net_device *dev,
1712                                     struct ieee80211_txq_params *params)
1713 {
1714         struct ieee80211_local *local = wiphy_priv(wiphy);
1715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1716         struct ieee80211_tx_queue_params p;
1717
1718         if (!local->ops->conf_tx)
1719                 return -EOPNOTSUPP;
1720
1721         if (local->hw.queues < IEEE80211_NUM_ACS)
1722                 return -EOPNOTSUPP;
1723
1724         memset(&p, 0, sizeof(p));
1725         p.aifs = params->aifs;
1726         p.cw_max = params->cwmax;
1727         p.cw_min = params->cwmin;
1728         p.txop = params->txop;
1729
1730         /*
1731          * Setting tx queue params disables u-apsd because it's only
1732          * called in master mode.
1733          */
1734         p.uapsd = false;
1735
1736         sdata->tx_conf[params->ac] = p;
1737         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1738                 wiphy_debug(local->hw.wiphy,
1739                             "failed to set TX queue parameters for AC %d\n",
1740                             params->ac);
1741                 return -EINVAL;
1742         }
1743
1744         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1745
1746         return 0;
1747 }
1748
1749 #ifdef CONFIG_PM
1750 static int ieee80211_suspend(struct wiphy *wiphy,
1751                              struct cfg80211_wowlan *wowlan)
1752 {
1753         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1754 }
1755
1756 static int ieee80211_resume(struct wiphy *wiphy)
1757 {
1758         return __ieee80211_resume(wiphy_priv(wiphy));
1759 }
1760 #else
1761 #define ieee80211_suspend NULL
1762 #define ieee80211_resume NULL
1763 #endif
1764
1765 static int ieee80211_scan(struct wiphy *wiphy,
1766                           struct cfg80211_scan_request *req)
1767 {
1768         struct ieee80211_sub_if_data *sdata;
1769
1770         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1771
1772         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1773         case NL80211_IFTYPE_STATION:
1774         case NL80211_IFTYPE_ADHOC:
1775         case NL80211_IFTYPE_MESH_POINT:
1776         case NL80211_IFTYPE_P2P_CLIENT:
1777                 break;
1778         case NL80211_IFTYPE_P2P_GO:
1779                 if (sdata->local->ops->hw_scan)
1780                         break;
1781                 /*
1782                  * FIXME: implement NoA while scanning in software,
1783                  * for now fall through to allow scanning only when
1784                  * beaconing hasn't been configured yet
1785                  */
1786         case NL80211_IFTYPE_AP:
1787                 if (sdata->u.ap.beacon)
1788                         return -EOPNOTSUPP;
1789                 break;
1790         default:
1791                 return -EOPNOTSUPP;
1792         }
1793
1794         return ieee80211_request_scan(sdata, req);
1795 }
1796
1797 static int
1798 ieee80211_sched_scan_start(struct wiphy *wiphy,
1799                            struct net_device *dev,
1800                            struct cfg80211_sched_scan_request *req)
1801 {
1802         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1803
1804         if (!sdata->local->ops->sched_scan_start)
1805                 return -EOPNOTSUPP;
1806
1807         return ieee80211_request_sched_scan_start(sdata, req);
1808 }
1809
1810 static int
1811 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1812 {
1813         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1814
1815         if (!sdata->local->ops->sched_scan_stop)
1816                 return -EOPNOTSUPP;
1817
1818         return ieee80211_request_sched_scan_stop(sdata);
1819 }
1820
1821 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1822                           struct cfg80211_auth_request *req)
1823 {
1824         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1825 }
1826
1827 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1828                            struct cfg80211_assoc_request *req)
1829 {
1830         struct ieee80211_local *local = wiphy_priv(wiphy);
1831         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1832
1833         switch (ieee80211_get_channel_mode(local, sdata)) {
1834         case CHAN_MODE_HOPPING:
1835                 return -EBUSY;
1836         case CHAN_MODE_FIXED:
1837                 if (local->oper_channel == req->bss->channel)
1838                         break;
1839                 return -EBUSY;
1840         case CHAN_MODE_UNDEFINED:
1841                 break;
1842         }
1843
1844         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1845 }
1846
1847 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1848                             struct cfg80211_deauth_request *req)
1849 {
1850         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1851 }
1852
1853 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1854                               struct cfg80211_disassoc_request *req)
1855 {
1856         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1857 }
1858
1859 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1860                                struct cfg80211_ibss_params *params)
1861 {
1862         struct ieee80211_local *local = wiphy_priv(wiphy);
1863         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1864
1865         switch (ieee80211_get_channel_mode(local, sdata)) {
1866         case CHAN_MODE_HOPPING:
1867                 return -EBUSY;
1868         case CHAN_MODE_FIXED:
1869                 if (!params->channel_fixed)
1870                         return -EBUSY;
1871                 if (local->oper_channel == params->channel)
1872                         break;
1873                 return -EBUSY;
1874         case CHAN_MODE_UNDEFINED:
1875                 break;
1876         }
1877
1878         return ieee80211_ibss_join(sdata, params);
1879 }
1880
1881 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1882 {
1883         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1884
1885         return ieee80211_ibss_leave(sdata);
1886 }
1887
1888 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1889 {
1890         struct ieee80211_local *local = wiphy_priv(wiphy);
1891         int err;
1892
1893         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1894                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1895
1896                 if (err)
1897                         return err;
1898         }
1899
1900         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1901                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1902
1903                 if (err)
1904                         return err;
1905         }
1906
1907         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1908                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1909
1910                 if (err)
1911                         return err;
1912         }
1913
1914         if (changed & WIPHY_PARAM_RETRY_SHORT)
1915                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1916         if (changed & WIPHY_PARAM_RETRY_LONG)
1917                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1918         if (changed &
1919             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1920                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1921
1922         return 0;
1923 }
1924
1925 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1926                                   enum nl80211_tx_power_setting type, int mbm)
1927 {
1928         struct ieee80211_local *local = wiphy_priv(wiphy);
1929         struct ieee80211_channel *chan = local->hw.conf.channel;
1930         u32 changes = 0;
1931
1932         switch (type) {
1933         case NL80211_TX_POWER_AUTOMATIC:
1934                 local->user_power_level = -1;
1935                 break;
1936         case NL80211_TX_POWER_LIMITED:
1937                 if (mbm < 0 || (mbm % 100))
1938                         return -EOPNOTSUPP;
1939                 local->user_power_level = MBM_TO_DBM(mbm);
1940                 break;
1941         case NL80211_TX_POWER_FIXED:
1942                 if (mbm < 0 || (mbm % 100))
1943                         return -EOPNOTSUPP;
1944                 /* TODO: move to cfg80211 when it knows the channel */
1945                 if (MBM_TO_DBM(mbm) > chan->max_power)
1946                         return -EINVAL;
1947                 local->user_power_level = MBM_TO_DBM(mbm);
1948                 break;
1949         }
1950
1951         ieee80211_hw_config(local, changes);
1952
1953         return 0;
1954 }
1955
1956 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1957 {
1958         struct ieee80211_local *local = wiphy_priv(wiphy);
1959
1960         *dbm = local->hw.conf.power_level;
1961
1962         return 0;
1963 }
1964
1965 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1966                                   const u8 *addr)
1967 {
1968         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1969
1970         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1971
1972         return 0;
1973 }
1974
1975 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1976 {
1977         struct ieee80211_local *local = wiphy_priv(wiphy);
1978
1979         drv_rfkill_poll(local);
1980 }
1981
1982 #ifdef CONFIG_NL80211_TESTMODE
1983 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1984 {
1985         struct ieee80211_local *local = wiphy_priv(wiphy);
1986
1987         if (!local->ops->testmode_cmd)
1988                 return -EOPNOTSUPP;
1989
1990         return local->ops->testmode_cmd(&local->hw, data, len);
1991 }
1992
1993 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1994                                    struct sk_buff *skb,
1995                                    struct netlink_callback *cb,
1996                                    void *data, int len)
1997 {
1998         struct ieee80211_local *local = wiphy_priv(wiphy);
1999
2000         if (!local->ops->testmode_dump)
2001                 return -EOPNOTSUPP;
2002
2003         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2004 }
2005 #endif
2006
2007 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2008                              enum ieee80211_smps_mode smps_mode)
2009 {
2010         const u8 *ap;
2011         enum ieee80211_smps_mode old_req;
2012         int err;
2013
2014         lockdep_assert_held(&sdata->u.mgd.mtx);
2015
2016         old_req = sdata->u.mgd.req_smps;
2017         sdata->u.mgd.req_smps = smps_mode;
2018
2019         if (old_req == smps_mode &&
2020             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2021                 return 0;
2022
2023         /*
2024          * If not associated, or current association is not an HT
2025          * association, there's no need to send an action frame.
2026          */
2027         if (!sdata->u.mgd.associated ||
2028             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
2029                 mutex_lock(&sdata->local->iflist_mtx);
2030                 ieee80211_recalc_smps(sdata->local);
2031                 mutex_unlock(&sdata->local->iflist_mtx);
2032                 return 0;
2033         }
2034
2035         ap = sdata->u.mgd.associated->bssid;
2036
2037         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2038                 if (sdata->u.mgd.powersave)
2039                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2040                 else
2041                         smps_mode = IEEE80211_SMPS_OFF;
2042         }
2043
2044         /* send SM PS frame to AP */
2045         err = ieee80211_send_smps_action(sdata, smps_mode,
2046                                          ap, ap);
2047         if (err)
2048                 sdata->u.mgd.req_smps = old_req;
2049
2050         return err;
2051 }
2052
2053 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2054                                     bool enabled, int timeout)
2055 {
2056         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2057         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2058
2059         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2060                 return -EOPNOTSUPP;
2061
2062         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2063                 return -EOPNOTSUPP;
2064
2065         if (enabled == sdata->u.mgd.powersave &&
2066             timeout == local->dynamic_ps_forced_timeout)
2067                 return 0;
2068
2069         sdata->u.mgd.powersave = enabled;
2070         local->dynamic_ps_forced_timeout = timeout;
2071
2072         /* no change, but if automatic follow powersave */
2073         mutex_lock(&sdata->u.mgd.mtx);
2074         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2075         mutex_unlock(&sdata->u.mgd.mtx);
2076
2077         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2078                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2079
2080         ieee80211_recalc_ps(local, -1);
2081
2082         return 0;
2083 }
2084
2085 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2086                                          struct net_device *dev,
2087                                          s32 rssi_thold, u32 rssi_hyst)
2088 {
2089         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2090         struct ieee80211_vif *vif = &sdata->vif;
2091         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2092
2093         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2094             rssi_hyst == bss_conf->cqm_rssi_hyst)
2095                 return 0;
2096
2097         bss_conf->cqm_rssi_thold = rssi_thold;
2098         bss_conf->cqm_rssi_hyst = rssi_hyst;
2099
2100         /* tell the driver upon association, unless already associated */
2101         if (sdata->u.mgd.associated &&
2102             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2103                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2104
2105         return 0;
2106 }
2107
2108 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2109                                       struct net_device *dev,
2110                                       const u8 *addr,
2111                                       const struct cfg80211_bitrate_mask *mask)
2112 {
2113         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2114         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2115         int i, ret;
2116
2117         if (!ieee80211_sdata_running(sdata))
2118                 return -ENETDOWN;
2119
2120         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2121                 ret = drv_set_bitrate_mask(local, sdata, mask);
2122                 if (ret)
2123                         return ret;
2124         }
2125
2126         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2127                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2128                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2129                        sizeof(mask->control[i].mcs));
2130         }
2131
2132         return 0;
2133 }
2134
2135 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2136                                     struct ieee80211_sub_if_data *sdata,
2137                                     struct ieee80211_channel *channel,
2138                                     enum nl80211_channel_type channel_type,
2139                                     unsigned int duration, u64 *cookie,
2140                                     struct sk_buff *txskb)
2141 {
2142         struct ieee80211_roc_work *roc, *tmp;
2143         bool queued = false;
2144         int ret;
2145
2146         lockdep_assert_held(&local->mtx);
2147
2148         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2149         if (!roc)
2150                 return -ENOMEM;
2151
2152         roc->chan = channel;
2153         roc->chan_type = channel_type;
2154         roc->duration = duration;
2155         roc->req_duration = duration;
2156         roc->frame = txskb;
2157         roc->mgmt_tx_cookie = (unsigned long)txskb;
2158         roc->sdata = sdata;
2159         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2160         INIT_LIST_HEAD(&roc->dependents);
2161
2162         /* if there's one pending or we're scanning, queue this one */
2163         if (!list_empty(&local->roc_list) || local->scanning)
2164                 goto out_check_combine;
2165
2166         /* if not HW assist, just queue & schedule work */
2167         if (!local->ops->remain_on_channel) {
2168                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2169                 goto out_queue;
2170         }
2171
2172         /* otherwise actually kick it off here (for error handling) */
2173
2174         /*
2175          * If the duration is zero, then the driver
2176          * wouldn't actually do anything. Set it to
2177          * 10 for now.
2178          *
2179          * TODO: cancel the off-channel operation
2180          *       when we get the SKB's TX status and
2181          *       the wait time was zero before.
2182          */
2183         if (!duration)
2184                 duration = 10;
2185
2186         ret = drv_remain_on_channel(local, channel, channel_type, duration);
2187         if (ret) {
2188                 kfree(roc);
2189                 return ret;
2190         }
2191
2192         roc->started = true;
2193         goto out_queue;
2194
2195  out_check_combine:
2196         list_for_each_entry(tmp, &local->roc_list, list) {
2197                 if (tmp->chan != channel || tmp->chan_type != channel_type)
2198                         continue;
2199
2200                 /*
2201                  * Extend this ROC if possible:
2202                  *
2203                  * If it hasn't started yet, just increase the duration
2204                  * and add the new one to the list of dependents.
2205                  */
2206                 if (!tmp->started) {
2207                         list_add_tail(&roc->list, &tmp->dependents);
2208                         tmp->duration = max(tmp->duration, roc->duration);
2209                         queued = true;
2210                         break;
2211                 }
2212
2213                 /* If it has already started, it's more difficult ... */
2214                 if (local->ops->remain_on_channel) {
2215                         unsigned long j = jiffies;
2216
2217                         /*
2218                          * In the offloaded ROC case, if it hasn't begun, add
2219                          * this new one to the dependent list to be handled
2220                          * when the the master one begins. If it has begun,
2221                          * check that there's still a minimum time left and
2222                          * if so, start this one, transmitting the frame, but
2223                          * add it to the list directly after this one with a
2224                          * a reduced time so we'll ask the driver to execute
2225                          * it right after finishing the previous one, in the
2226                          * hope that it'll also be executed right afterwards,
2227                          * effectively extending the old one.
2228                          * If there's no minimum time left, just add it to the
2229                          * normal list.
2230                          */
2231                         if (!tmp->hw_begun) {
2232                                 list_add_tail(&roc->list, &tmp->dependents);
2233                                 queued = true;
2234                                 break;
2235                         }
2236
2237                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2238                                         tmp->hw_start_time +
2239                                         msecs_to_jiffies(tmp->duration))) {
2240                                 int new_dur;
2241
2242                                 ieee80211_handle_roc_started(roc);
2243
2244                                 new_dur = roc->duration -
2245                                           jiffies_to_msecs(tmp->hw_start_time +
2246                                                            msecs_to_jiffies(
2247                                                                 tmp->duration) -
2248                                                            j);
2249
2250                                 if (new_dur > 0) {
2251                                         /* add right after tmp */
2252                                         list_add(&roc->list, &tmp->list);
2253                                 } else {
2254                                         list_add_tail(&roc->list,
2255                                                       &tmp->dependents);
2256                                 }
2257                                 queued = true;
2258                         }
2259                 } else if (del_timer_sync(&tmp->work.timer)) {
2260                         unsigned long new_end;
2261
2262                         /*
2263                          * In the software ROC case, cancel the timer, if
2264                          * that fails then the finish work is already
2265                          * queued/pending and thus we queue the new ROC
2266                          * normally, if that succeeds then we can extend
2267                          * the timer duration and TX the frame (if any.)
2268                          */
2269
2270                         list_add_tail(&roc->list, &tmp->dependents);
2271                         queued = true;
2272
2273                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2274
2275                         /* ok, it was started & we canceled timer */
2276                         if (time_after(new_end, tmp->work.timer.expires))
2277                                 mod_timer(&tmp->work.timer, new_end);
2278                         else
2279                                 add_timer(&tmp->work.timer);
2280
2281                         ieee80211_handle_roc_started(roc);
2282                 }
2283                 break;
2284         }
2285
2286  out_queue:
2287         if (!queued)
2288                 list_add_tail(&roc->list, &local->roc_list);
2289
2290         /*
2291          * cookie is either the roc (for normal roc)
2292          * or the SKB (for mgmt TX)
2293          */
2294         if (txskb)
2295                 *cookie = (unsigned long)txskb;
2296         else
2297                 *cookie = (unsigned long)roc;
2298
2299         return 0;
2300 }
2301
2302 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2303                                        struct wireless_dev *wdev,
2304                                        struct ieee80211_channel *chan,
2305                                        enum nl80211_channel_type channel_type,
2306                                        unsigned int duration,
2307                                        u64 *cookie)
2308 {
2309         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2310         struct ieee80211_local *local = sdata->local;
2311         int ret;
2312
2313         mutex_lock(&local->mtx);
2314         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2315                                        duration, cookie, NULL);
2316         mutex_unlock(&local->mtx);
2317
2318         return ret;
2319 }
2320
2321 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2322                                 u64 cookie, bool mgmt_tx)
2323 {
2324         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2325         int ret;
2326
2327         mutex_lock(&local->mtx);
2328         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2329                 struct ieee80211_roc_work *dep, *tmp2;
2330
2331                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2332                         if (!mgmt_tx && (unsigned long)dep != cookie)
2333                                 continue;
2334                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2335                                 continue;
2336                         /* found dependent item -- just remove it */
2337                         list_del(&dep->list);
2338                         mutex_unlock(&local->mtx);
2339
2340                         ieee80211_roc_notify_destroy(dep);
2341                         return 0;
2342                 }
2343
2344                 if (!mgmt_tx && (unsigned long)roc != cookie)
2345                         continue;
2346                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2347                         continue;
2348
2349                 found = roc;
2350                 break;
2351         }
2352
2353         if (!found) {
2354                 mutex_unlock(&local->mtx);
2355                 return -ENOENT;
2356         }
2357
2358         /*
2359          * We found the item to cancel, so do that. Note that it
2360          * may have dependents, which we also cancel (and send
2361          * the expired signal for.) Not doing so would be quite
2362          * tricky here, but we may need to fix it later.
2363          */
2364
2365         if (local->ops->remain_on_channel) {
2366                 if (found->started) {
2367                         ret = drv_cancel_remain_on_channel(local);
2368                         if (WARN_ON_ONCE(ret)) {
2369                                 mutex_unlock(&local->mtx);
2370                                 return ret;
2371                         }
2372                 }
2373
2374                 list_del(&found->list);
2375
2376                 if (found->started)
2377                         ieee80211_start_next_roc(local);
2378                 mutex_unlock(&local->mtx);
2379
2380                 ieee80211_roc_notify_destroy(found);
2381         } else {
2382                 /* work may be pending so use it all the time */
2383                 found->abort = true;
2384                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2385
2386                 mutex_unlock(&local->mtx);
2387
2388                 /* work will clean up etc */
2389                 flush_delayed_work(&found->work);
2390         }
2391
2392         return 0;
2393 }
2394
2395 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2396                                               struct wireless_dev *wdev,
2397                                               u64 cookie)
2398 {
2399         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2400         struct ieee80211_local *local = sdata->local;
2401
2402         return ieee80211_cancel_roc(local, cookie, false);
2403 }
2404
2405 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2406                              struct ieee80211_channel *chan, bool offchan,
2407                              enum nl80211_channel_type channel_type,
2408                              bool channel_type_valid, unsigned int wait,
2409                              const u8 *buf, size_t len, bool no_cck,
2410                              bool dont_wait_for_ack, u64 *cookie)
2411 {
2412         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2413         struct ieee80211_local *local = sdata->local;
2414         struct sk_buff *skb;
2415         struct sta_info *sta;
2416         const struct ieee80211_mgmt *mgmt = (void *)buf;
2417         bool need_offchan = false;
2418         u32 flags;
2419         int ret;
2420
2421         if (dont_wait_for_ack)
2422                 flags = IEEE80211_TX_CTL_NO_ACK;
2423         else
2424                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2425                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2426
2427         if (no_cck)
2428                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2429
2430         switch (sdata->vif.type) {
2431         case NL80211_IFTYPE_ADHOC:
2432                 if (!sdata->vif.bss_conf.ibss_joined)
2433                         need_offchan = true;
2434                 /* fall through */
2435 #ifdef CONFIG_MAC80211_MESH
2436         case NL80211_IFTYPE_MESH_POINT:
2437                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2438                     !sdata->u.mesh.mesh_id_len)
2439                         need_offchan = true;
2440                 /* fall through */
2441 #endif
2442         case NL80211_IFTYPE_AP:
2443         case NL80211_IFTYPE_AP_VLAN:
2444         case NL80211_IFTYPE_P2P_GO:
2445                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2446                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2447                     !rcu_access_pointer(sdata->bss->beacon))
2448                         need_offchan = true;
2449                 if (!ieee80211_is_action(mgmt->frame_control) ||
2450                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2451                         break;
2452                 rcu_read_lock();
2453                 sta = sta_info_get(sdata, mgmt->da);
2454                 rcu_read_unlock();
2455                 if (!sta)
2456                         return -ENOLINK;
2457                 break;
2458         case NL80211_IFTYPE_STATION:
2459         case NL80211_IFTYPE_P2P_CLIENT:
2460                 if (!sdata->u.mgd.associated)
2461                         need_offchan = true;
2462                 break;
2463         default:
2464                 return -EOPNOTSUPP;
2465         }
2466
2467         mutex_lock(&local->mtx);
2468
2469         /* Check if the operating channel is the requested channel */
2470         if (!need_offchan) {
2471                 need_offchan = chan != local->oper_channel;
2472                 if (channel_type_valid &&
2473                     channel_type != local->_oper_channel_type)
2474                         need_offchan = true;
2475         }
2476
2477         if (need_offchan && !offchan) {
2478                 ret = -EBUSY;
2479                 goto out_unlock;
2480         }
2481
2482         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2483         if (!skb) {
2484                 ret = -ENOMEM;
2485                 goto out_unlock;
2486         }
2487         skb_reserve(skb, local->hw.extra_tx_headroom);
2488
2489         memcpy(skb_put(skb, len), buf, len);
2490
2491         IEEE80211_SKB_CB(skb)->flags = flags;
2492
2493         skb->dev = sdata->dev;
2494
2495         if (!need_offchan) {
2496                 *cookie = (unsigned long) skb;
2497                 ieee80211_tx_skb(sdata, skb);
2498                 ret = 0;
2499                 goto out_unlock;
2500         }
2501
2502         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2503         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2504                 IEEE80211_SKB_CB(skb)->hw_queue =
2505                         local->hw.offchannel_tx_hw_queue;
2506
2507         /* This will handle all kinds of coalescing and immediate TX */
2508         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2509                                        wait, cookie, skb);
2510         if (ret)
2511                 kfree_skb(skb);
2512  out_unlock:
2513         mutex_unlock(&local->mtx);
2514         return ret;
2515 }
2516
2517 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2518                                          struct wireless_dev *wdev,
2519                                          u64 cookie)
2520 {
2521         struct ieee80211_local *local = wiphy_priv(wiphy);
2522
2523         return ieee80211_cancel_roc(local, cookie, true);
2524 }
2525
2526 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2527                                           struct wireless_dev *wdev,
2528                                           u16 frame_type, bool reg)
2529 {
2530         struct ieee80211_local *local = wiphy_priv(wiphy);
2531         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2532
2533         switch (frame_type) {
2534         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2535                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2536                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2537
2538                         if (reg)
2539                                 ifibss->auth_frame_registrations++;
2540                         else
2541                                 ifibss->auth_frame_registrations--;
2542                 }
2543                 break;
2544         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2545                 if (reg)
2546                         local->probe_req_reg++;
2547                 else
2548                         local->probe_req_reg--;
2549
2550                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2551                 break;
2552         default:
2553                 break;
2554         }
2555 }
2556
2557 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2558 {
2559         struct ieee80211_local *local = wiphy_priv(wiphy);
2560
2561         if (local->started)
2562                 return -EOPNOTSUPP;
2563
2564         return drv_set_antenna(local, tx_ant, rx_ant);
2565 }
2566
2567 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2568 {
2569         struct ieee80211_local *local = wiphy_priv(wiphy);
2570
2571         return drv_get_antenna(local, tx_ant, rx_ant);
2572 }
2573
2574 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2575 {
2576         struct ieee80211_local *local = wiphy_priv(wiphy);
2577
2578         return drv_set_ringparam(local, tx, rx);
2579 }
2580
2581 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2582                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2583 {
2584         struct ieee80211_local *local = wiphy_priv(wiphy);
2585
2586         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2587 }
2588
2589 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2590                                     struct net_device *dev,
2591                                     struct cfg80211_gtk_rekey_data *data)
2592 {
2593         struct ieee80211_local *local = wiphy_priv(wiphy);
2594         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2595
2596         if (!local->ops->set_rekey_data)
2597                 return -EOPNOTSUPP;
2598
2599         drv_set_rekey_data(local, sdata, data);
2600
2601         return 0;
2602 }
2603
2604 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2605 {
2606         u8 *pos = (void *)skb_put(skb, 7);
2607
2608         *pos++ = WLAN_EID_EXT_CAPABILITY;
2609         *pos++ = 5; /* len */
2610         *pos++ = 0x0;
2611         *pos++ = 0x0;
2612         *pos++ = 0x0;
2613         *pos++ = 0x0;
2614         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2615 }
2616
2617 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2618 {
2619         struct ieee80211_local *local = sdata->local;
2620         u16 capab;
2621
2622         capab = 0;
2623         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2624                 return capab;
2625
2626         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2627                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2628         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2629                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2630
2631         return capab;
2632 }
2633
2634 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2635                                        u8 *peer, u8 *bssid)
2636 {
2637         struct ieee80211_tdls_lnkie *lnkid;
2638
2639         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2640
2641         lnkid->ie_type = WLAN_EID_LINK_ID;
2642         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2643
2644         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2645         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2646         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2647 }
2648
2649 static int
2650 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2651                                u8 *peer, u8 action_code, u8 dialog_token,
2652                                u16 status_code, struct sk_buff *skb)
2653 {
2654         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2655         struct ieee80211_tdls_data *tf;
2656
2657         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2658
2659         memcpy(tf->da, peer, ETH_ALEN);
2660         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2661         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2662         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2663
2664         switch (action_code) {
2665         case WLAN_TDLS_SETUP_REQUEST:
2666                 tf->category = WLAN_CATEGORY_TDLS;
2667                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2668
2669                 skb_put(skb, sizeof(tf->u.setup_req));
2670                 tf->u.setup_req.dialog_token = dialog_token;
2671                 tf->u.setup_req.capability =
2672                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2673
2674                 ieee80211_add_srates_ie(sdata, skb, false);
2675                 ieee80211_add_ext_srates_ie(sdata, skb, false);
2676                 ieee80211_tdls_add_ext_capab(skb);
2677                 break;
2678         case WLAN_TDLS_SETUP_RESPONSE:
2679                 tf->category = WLAN_CATEGORY_TDLS;
2680                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2681
2682                 skb_put(skb, sizeof(tf->u.setup_resp));
2683                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2684                 tf->u.setup_resp.dialog_token = dialog_token;
2685                 tf->u.setup_resp.capability =
2686                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2687
2688                 ieee80211_add_srates_ie(sdata, skb, false);
2689                 ieee80211_add_ext_srates_ie(sdata, skb, false);
2690                 ieee80211_tdls_add_ext_capab(skb);
2691                 break;
2692         case WLAN_TDLS_SETUP_CONFIRM:
2693                 tf->category = WLAN_CATEGORY_TDLS;
2694                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2695
2696                 skb_put(skb, sizeof(tf->u.setup_cfm));
2697                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2698                 tf->u.setup_cfm.dialog_token = dialog_token;
2699                 break;
2700         case WLAN_TDLS_TEARDOWN:
2701                 tf->category = WLAN_CATEGORY_TDLS;
2702                 tf->action_code = WLAN_TDLS_TEARDOWN;
2703
2704                 skb_put(skb, sizeof(tf->u.teardown));
2705                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2706                 break;
2707         case WLAN_TDLS_DISCOVERY_REQUEST:
2708                 tf->category = WLAN_CATEGORY_TDLS;
2709                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2710
2711                 skb_put(skb, sizeof(tf->u.discover_req));
2712                 tf->u.discover_req.dialog_token = dialog_token;
2713                 break;
2714         default:
2715                 return -EINVAL;
2716         }
2717
2718         return 0;
2719 }
2720
2721 static int
2722 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2723                            u8 *peer, u8 action_code, u8 dialog_token,
2724                            u16 status_code, struct sk_buff *skb)
2725 {
2726         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2727         struct ieee80211_mgmt *mgmt;
2728
2729         mgmt = (void *)skb_put(skb, 24);
2730         memset(mgmt, 0, 24);
2731         memcpy(mgmt->da, peer, ETH_ALEN);
2732         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2733         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2734
2735         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2736                                           IEEE80211_STYPE_ACTION);
2737
2738         switch (action_code) {
2739         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2740                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2741                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2742                 mgmt->u.action.u.tdls_discover_resp.action_code =
2743                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2744                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2745                         dialog_token;
2746                 mgmt->u.action.u.tdls_discover_resp.capability =
2747                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2748
2749                 ieee80211_add_srates_ie(sdata, skb, false);
2750                 ieee80211_add_ext_srates_ie(sdata, skb, false);
2751                 ieee80211_tdls_add_ext_capab(skb);
2752                 break;
2753         default:
2754                 return -EINVAL;
2755         }
2756
2757         return 0;
2758 }
2759
2760 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2761                                u8 *peer, u8 action_code, u8 dialog_token,
2762                                u16 status_code, const u8 *extra_ies,
2763                                size_t extra_ies_len)
2764 {
2765         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2766         struct ieee80211_local *local = sdata->local;
2767         struct ieee80211_tx_info *info;
2768         struct sk_buff *skb = NULL;
2769         bool send_direct;
2770         int ret;
2771
2772         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2773                 return -ENOTSUPP;
2774
2775         /* make sure we are in managed mode, and associated */
2776         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2777             !sdata->u.mgd.associated)
2778                 return -EINVAL;
2779
2780         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2781                  action_code, peer);
2782
2783         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2784                             max(sizeof(struct ieee80211_mgmt),
2785                                 sizeof(struct ieee80211_tdls_data)) +
2786                             50 + /* supported rates */
2787                             7 + /* ext capab */
2788                             extra_ies_len +
2789                             sizeof(struct ieee80211_tdls_lnkie));
2790         if (!skb)
2791                 return -ENOMEM;
2792
2793         info = IEEE80211_SKB_CB(skb);
2794         skb_reserve(skb, local->hw.extra_tx_headroom);
2795
2796         switch (action_code) {
2797         case WLAN_TDLS_SETUP_REQUEST:
2798         case WLAN_TDLS_SETUP_RESPONSE:
2799         case WLAN_TDLS_SETUP_CONFIRM:
2800         case WLAN_TDLS_TEARDOWN:
2801         case WLAN_TDLS_DISCOVERY_REQUEST:
2802                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2803                                                      action_code, dialog_token,
2804                                                      status_code, skb);
2805                 send_direct = false;
2806                 break;
2807         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2808                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2809                                                  dialog_token, status_code,
2810                                                  skb);
2811                 send_direct = true;
2812                 break;
2813         default:
2814                 ret = -ENOTSUPP;
2815                 break;
2816         }
2817
2818         if (ret < 0)
2819                 goto fail;
2820
2821         if (extra_ies_len)
2822                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2823
2824         /* the TDLS link IE is always added last */
2825         switch (action_code) {
2826         case WLAN_TDLS_SETUP_REQUEST:
2827         case WLAN_TDLS_SETUP_CONFIRM:
2828         case WLAN_TDLS_TEARDOWN:
2829         case WLAN_TDLS_DISCOVERY_REQUEST:
2830                 /* we are the initiator */
2831                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2832                                            sdata->u.mgd.bssid);
2833                 break;
2834         case WLAN_TDLS_SETUP_RESPONSE:
2835         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2836                 /* we are the responder */
2837                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2838                                            sdata->u.mgd.bssid);
2839                 break;
2840         default:
2841                 ret = -ENOTSUPP;
2842                 goto fail;
2843         }
2844
2845         if (send_direct) {
2846                 ieee80211_tx_skb(sdata, skb);
2847                 return 0;
2848         }
2849
2850         /*
2851          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2852          * we should default to AC_VI.
2853          */
2854         switch (action_code) {
2855         case WLAN_TDLS_SETUP_REQUEST:
2856         case WLAN_TDLS_SETUP_RESPONSE:
2857                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2858                 skb->priority = 2;
2859                 break;
2860         default:
2861                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2862                 skb->priority = 5;
2863                 break;
2864         }
2865
2866         /* disable bottom halves when entering the Tx path */
2867         local_bh_disable();
2868         ret = ieee80211_subif_start_xmit(skb, dev);
2869         local_bh_enable();
2870
2871         return ret;
2872
2873 fail:
2874         dev_kfree_skb(skb);
2875         return ret;
2876 }
2877
2878 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2879                                u8 *peer, enum nl80211_tdls_operation oper)
2880 {
2881         struct sta_info *sta;
2882         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2883
2884         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2885                 return -ENOTSUPP;
2886
2887         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2888                 return -EINVAL;
2889
2890         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2891
2892         switch (oper) {
2893         case NL80211_TDLS_ENABLE_LINK:
2894                 rcu_read_lock();
2895                 sta = sta_info_get(sdata, peer);
2896                 if (!sta) {
2897                         rcu_read_unlock();
2898                         return -ENOLINK;
2899                 }
2900
2901                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2902                 rcu_read_unlock();
2903                 break;
2904         case NL80211_TDLS_DISABLE_LINK:
2905                 return sta_info_destroy_addr(sdata, peer);
2906         case NL80211_TDLS_TEARDOWN:
2907         case NL80211_TDLS_SETUP:
2908         case NL80211_TDLS_DISCOVERY_REQ:
2909                 /* We don't support in-driver setup/teardown/discovery */
2910                 return -ENOTSUPP;
2911         default:
2912                 return -ENOTSUPP;
2913         }
2914
2915         return 0;
2916 }
2917
2918 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2919                                   const u8 *peer, u64 *cookie)
2920 {
2921         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2922         struct ieee80211_local *local = sdata->local;
2923         struct ieee80211_qos_hdr *nullfunc;
2924         struct sk_buff *skb;
2925         int size = sizeof(*nullfunc);
2926         __le16 fc;
2927         bool qos;
2928         struct ieee80211_tx_info *info;
2929         struct sta_info *sta;
2930
2931         rcu_read_lock();
2932         sta = sta_info_get(sdata, peer);
2933         if (sta) {
2934                 qos = test_sta_flag(sta, WLAN_STA_WME);
2935                 rcu_read_unlock();
2936         } else {
2937                 rcu_read_unlock();
2938                 return -ENOLINK;
2939         }
2940
2941         if (qos) {
2942                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2943                                  IEEE80211_STYPE_QOS_NULLFUNC |
2944                                  IEEE80211_FCTL_FROMDS);
2945         } else {
2946                 size -= 2;
2947                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2948                                  IEEE80211_STYPE_NULLFUNC |
2949                                  IEEE80211_FCTL_FROMDS);
2950         }
2951
2952         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2953         if (!skb)
2954                 return -ENOMEM;
2955
2956         skb->dev = dev;
2957
2958         skb_reserve(skb, local->hw.extra_tx_headroom);
2959
2960         nullfunc = (void *) skb_put(skb, size);
2961         nullfunc->frame_control = fc;
2962         nullfunc->duration_id = 0;
2963         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2964         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2965         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2966         nullfunc->seq_ctrl = 0;
2967
2968         info = IEEE80211_SKB_CB(skb);
2969
2970         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2971                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2972
2973         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2974         skb->priority = 7;
2975         if (qos)
2976                 nullfunc->qos_ctrl = cpu_to_le16(7);
2977
2978         local_bh_disable();
2979         ieee80211_xmit(sdata, skb);
2980         local_bh_enable();
2981
2982         *cookie = (unsigned long) skb;
2983         return 0;
2984 }
2985
2986 static struct ieee80211_channel *
2987 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
2988                           enum nl80211_channel_type *type)
2989 {
2990         struct ieee80211_local *local = wiphy_priv(wiphy);
2991
2992         *type = local->_oper_channel_type;
2993         return local->oper_channel;
2994 }
2995
2996 #ifdef CONFIG_PM
2997 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2998 {
2999         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3000 }
3001 #endif
3002
3003 struct cfg80211_ops mac80211_config_ops = {
3004         .add_virtual_intf = ieee80211_add_iface,
3005         .del_virtual_intf = ieee80211_del_iface,
3006         .change_virtual_intf = ieee80211_change_iface,
3007         .add_key = ieee80211_add_key,
3008         .del_key = ieee80211_del_key,
3009         .get_key = ieee80211_get_key,
3010         .set_default_key = ieee80211_config_default_key,
3011         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3012         .start_ap = ieee80211_start_ap,
3013         .change_beacon = ieee80211_change_beacon,
3014         .stop_ap = ieee80211_stop_ap,
3015         .add_station = ieee80211_add_station,
3016         .del_station = ieee80211_del_station,
3017         .change_station = ieee80211_change_station,
3018         .get_station = ieee80211_get_station,
3019         .dump_station = ieee80211_dump_station,
3020         .dump_survey = ieee80211_dump_survey,
3021 #ifdef CONFIG_MAC80211_MESH
3022         .add_mpath = ieee80211_add_mpath,
3023         .del_mpath = ieee80211_del_mpath,
3024         .change_mpath = ieee80211_change_mpath,
3025         .get_mpath = ieee80211_get_mpath,
3026         .dump_mpath = ieee80211_dump_mpath,
3027         .update_mesh_config = ieee80211_update_mesh_config,
3028         .get_mesh_config = ieee80211_get_mesh_config,
3029         .join_mesh = ieee80211_join_mesh,
3030         .leave_mesh = ieee80211_leave_mesh,
3031 #endif
3032         .change_bss = ieee80211_change_bss,
3033         .set_txq_params = ieee80211_set_txq_params,
3034         .set_monitor_channel = ieee80211_set_monitor_channel,
3035         .suspend = ieee80211_suspend,
3036         .resume = ieee80211_resume,
3037         .scan = ieee80211_scan,
3038         .sched_scan_start = ieee80211_sched_scan_start,
3039         .sched_scan_stop = ieee80211_sched_scan_stop,
3040         .auth = ieee80211_auth,
3041         .assoc = ieee80211_assoc,
3042         .deauth = ieee80211_deauth,
3043         .disassoc = ieee80211_disassoc,
3044         .join_ibss = ieee80211_join_ibss,
3045         .leave_ibss = ieee80211_leave_ibss,
3046         .set_wiphy_params = ieee80211_set_wiphy_params,
3047         .set_tx_power = ieee80211_set_tx_power,
3048         .get_tx_power = ieee80211_get_tx_power,
3049         .set_wds_peer = ieee80211_set_wds_peer,
3050         .rfkill_poll = ieee80211_rfkill_poll,
3051         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3052         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3053         .set_power_mgmt = ieee80211_set_power_mgmt,
3054         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3055         .remain_on_channel = ieee80211_remain_on_channel,
3056         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3057         .mgmt_tx = ieee80211_mgmt_tx,
3058         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3059         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3060         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3061         .set_antenna = ieee80211_set_antenna,
3062         .get_antenna = ieee80211_get_antenna,
3063         .set_ringparam = ieee80211_set_ringparam,
3064         .get_ringparam = ieee80211_get_ringparam,
3065         .set_rekey_data = ieee80211_set_rekey_data,
3066         .tdls_oper = ieee80211_tdls_oper,
3067         .tdls_mgmt = ieee80211_tdls_mgmt,
3068         .probe_client = ieee80211_probe_client,
3069         .set_noack_map = ieee80211_set_noack_map,
3070 #ifdef CONFIG_PM
3071         .set_wakeup = ieee80211_set_wakeup,
3072 #endif
3073         .get_et_sset_count = ieee80211_get_et_sset_count,
3074         .get_et_stats = ieee80211_get_et_stats,
3075         .get_et_strings = ieee80211_get_et_strings,
3076         .get_channel = ieee80211_cfg_get_channel,
3077 };