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,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         /*
  77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  78                          * changed while the interface is up.
  79                          * Else we would need to add a lot of cruft
  80                          * to update everything:
  81                          *      cooked_mntrs, monitor and all fif_* counters
  82                          *      reconfigure hardware
  83                          */
  84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  86                                 return -EBUSY;
  87
  88                         ieee80211_adjust_monitor_flags(sdata, -1);
  89                         sdata->u.mntr_flags = *flags;
  90                         ieee80211_adjust_monitor_flags(sdata, 1);
  91
  92                         ieee80211_configure_filter(local);
  93                 } else {
  94                         /*
  95                          * Because the interface is down, ieee80211_do_stop
  96                          * and ieee80211_do_open take care of "everything"
  97                          * mentioned in the comment above.
  98                          */
  99                         sdata->u.mntr_flags = *flags;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 107                                       struct wireless_dev *wdev)
 108 {
 109         return ieee80211_do_open(wdev, true);
 110 }
 111
 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 116 }
 117
 118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 119                                   struct net_device *dev,
 120                                   u16 noack_map)
 121 {
 122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 123
 124         sdata->noack_map = noack_map;
 125         return 0;
 126 }
 127
 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 130                              struct key_params *params)
 131 {
 132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 133         struct sta_info *sta = NULL;
 134         struct ieee80211_key *key;
 135         int err;
 136
 137         if (!ieee80211_sdata_running(sdata))
 138                 return -ENETDOWN;
 139
 140         /* reject WEP and TKIP keys if WEP failed to initialize */
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_TKIP:
 144         case WLAN_CIPHER_SUITE_WEP104:
 145                 if (IS_ERR(sdata->local->wep_tx_tfm))
 146                         return -EINVAL;
 147                 break;
 148         default:
 149                 break;
 150         }
 151
 152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 153                                   params->key, params->seq_len, params->seq);
 154         if (IS_ERR(key))
 155                 return PTR_ERR(key);
 156
 157         if (pairwise)
 158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 159
 160         mutex_lock(&sdata->local->sta_mtx);
 161
 162         if (mac_addr) {
 163                 if (ieee80211_vif_is_mesh(&sdata->vif))
 164                         sta = sta_info_get(sdata, mac_addr);
 165                 else
 166                         sta = sta_info_get_bss(sdata, mac_addr);
 167                 if (!sta) {
 168                         ieee80211_key_free(sdata->local, key);
 169                         err = -ENOENT;
 170                         goto out_unlock;
 171                 }
 172         }
 173
 174         switch (sdata->vif.type) {
 175         case NL80211_IFTYPE_STATION:
 176                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 177                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 178                 break;
 179         case NL80211_IFTYPE_AP:
 180         case NL80211_IFTYPE_AP_VLAN:
 181                 /* Keys without a station are used for TX only */
 182                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 183                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 184                 break;
 185         case NL80211_IFTYPE_ADHOC:
 186                 /* no MFP (yet) */
 187                 break;
 188         case NL80211_IFTYPE_MESH_POINT:
 189 #ifdef CONFIG_MAC80211_MESH
 190                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 191                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 192                 break;
 193 #endif
 194         case NL80211_IFTYPE_WDS:
 195         case NL80211_IFTYPE_MONITOR:
 196         case NL80211_IFTYPE_P2P_DEVICE:
 197         case NL80211_IFTYPE_UNSPECIFIED:
 198         case NUM_NL80211_IFTYPES:
 199         case NL80211_IFTYPE_P2P_CLIENT:
 200         case NL80211_IFTYPE_P2P_GO:
 201                 /* shouldn't happen */
 202                 WARN_ON_ONCE(1);
 203                 break;
 204         }
 205
 206         err = ieee80211_key_link(key, sdata, sta);
 207         if (err)
 208                 ieee80211_key_free(sdata->local, key);
 209
 210  out_unlock:
 211         mutex_unlock(&sdata->local->sta_mtx);
 212
 213         return err;
 214 }
 215
 216 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 217                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 218 {
 219         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 220         struct ieee80211_local *local = sdata->local;
 221         struct sta_info *sta;
 222         struct ieee80211_key *key = NULL;
 223         int ret;
 224
 225         mutex_lock(&local->sta_mtx);
 226         mutex_lock(&local->key_mtx);
 227
 228         if (mac_addr) {
 229                 ret = -ENOENT;
 230
 231                 sta = sta_info_get_bss(sdata, mac_addr);
 232                 if (!sta)
 233                         goto out_unlock;
 234
 235                 if (pairwise)
 236                         key = key_mtx_dereference(local, sta->ptk);
 237                 else
 238                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 239         } else
 240                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 241
 242         if (!key) {
 243                 ret = -ENOENT;
 244                 goto out_unlock;
 245         }
 246
 247         __ieee80211_key_free(key);
 248
 249         ret = 0;
 250  out_unlock:
 251         mutex_unlock(&local->key_mtx);
 252         mutex_unlock(&local->sta_mtx);
 253
 254         return ret;
 255 }
 256
 257 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 258                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 259                              void *cookie,
 260                              void (*callback)(void *cookie,
 261                                               struct key_params *params))
 262 {
 263         struct ieee80211_sub_if_data *sdata;
 264         struct sta_info *sta = NULL;
 265         u8 seq[6] = {0};
 266         struct key_params params;
 267         struct ieee80211_key *key = NULL;
 268         u64 pn64;
 269         u32 iv32;
 270         u16 iv16;
 271         int err = -ENOENT;
 272
 273         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 274
 275         rcu_read_lock();
 276
 277         if (mac_addr) {
 278                 sta = sta_info_get_bss(sdata, mac_addr);
 279                 if (!sta)
 280                         goto out;
 281
 282                 if (pairwise)
 283                         key = rcu_dereference(sta->ptk);
 284                 else if (key_idx < NUM_DEFAULT_KEYS)
 285                         key = rcu_dereference(sta->gtk[key_idx]);
 286         } else
 287                 key = rcu_dereference(sdata->keys[key_idx]);
 288
 289         if (!key)
 290                 goto out;
 291
 292         memset(&params, 0, sizeof(params));
 293
 294         params.cipher = key->conf.cipher;
 295
 296         switch (key->conf.cipher) {
 297         case WLAN_CIPHER_SUITE_TKIP:
 298                 iv32 = key->u.tkip.tx.iv32;
 299                 iv16 = key->u.tkip.tx.iv16;
 300
 301                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 302                         drv_get_tkip_seq(sdata->local,
 303                                          key->conf.hw_key_idx,
 304                                          &iv32, &iv16);
 305
 306                 seq[0] = iv16 & 0xff;
 307                 seq[1] = (iv16 >> 8) & 0xff;
 308                 seq[2] = iv32 & 0xff;
 309                 seq[3] = (iv32 >> 8) & 0xff;
 310                 seq[4] = (iv32 >> 16) & 0xff;
 311                 seq[5] = (iv32 >> 24) & 0xff;
 312                 params.seq = seq;
 313                 params.seq_len = 6;
 314                 break;
 315         case WLAN_CIPHER_SUITE_CCMP:
 316                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 317                 seq[0] = pn64;
 318                 seq[1] = pn64 >> 8;
 319                 seq[2] = pn64 >> 16;
 320                 seq[3] = pn64 >> 24;
 321                 seq[4] = pn64 >> 32;
 322                 seq[5] = pn64 >> 40;
 323                 params.seq = seq;
 324                 params.seq_len = 6;
 325                 break;
 326         case WLAN_CIPHER_SUITE_AES_CMAC:
 327                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 328                 seq[0] = pn64;
 329                 seq[1] = pn64 >> 8;
 330                 seq[2] = pn64 >> 16;
 331                 seq[3] = pn64 >> 24;
 332                 seq[4] = pn64 >> 32;
 333                 seq[5] = pn64 >> 40;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         }
 338
 339         params.key = key->conf.key;
 340         params.key_len = key->conf.keylen;
 341
 342         callback(cookie, &params);
 343         err = 0;
 344
 345  out:
 346         rcu_read_unlock();
 347         return err;
 348 }
 349
 350 static int ieee80211_config_default_key(struct wiphy *wiphy,
 351                                         struct net_device *dev,
 352                                         u8 key_idx, bool uni,
 353                                         bool multi)
 354 {
 355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 356
 357         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 358
 359         return 0;
 360 }
 361
 362 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 363                                              struct net_device *dev,
 364                                              u8 key_idx)
 365 {
 366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 367
 368         ieee80211_set_default_mgmt_key(sdata, key_idx);
 369
 370         return 0;
 371 }
 372
 373 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 374 {
 375         enum ieee80211_band band = ieee80211_get_sdata_band(sta->sdata);
 376
 377         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 378                 struct ieee80211_supported_band *sband;
 379                 sband = sta->local->hw.wiphy->bands[band];
 380                 rate->legacy = sband->bitrates[idx].bitrate;
 381         } else
 382                 rate->mcs = idx;
 383 }
 384
 385 void sta_set_rate_info_tx(struct sta_info *sta,
 386                           const struct ieee80211_tx_rate *rate,
 387                           struct rate_info *rinfo)
 388 {
 389         rinfo->flags = 0;
 390         if (rate->flags & IEEE80211_TX_RC_MCS)
 391                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 392         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 393                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 394         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 395                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 396         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 397 }
 398
 399 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 400 {
 401         struct ieee80211_sub_if_data *sdata = sta->sdata;
 402         struct ieee80211_local *local = sdata->local;
 403         struct timespec uptime;
 404
 405         sinfo->generation = sdata->local->sta_generation;
 406
 407         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 408                         STATION_INFO_RX_BYTES |
 409                         STATION_INFO_TX_BYTES |
 410                         STATION_INFO_RX_PACKETS |
 411                         STATION_INFO_TX_PACKETS |
 412                         STATION_INFO_TX_RETRIES |
 413                         STATION_INFO_TX_FAILED |
 414                         STATION_INFO_TX_BITRATE |
 415                         STATION_INFO_RX_BITRATE |
 416                         STATION_INFO_RX_DROP_MISC |
 417                         STATION_INFO_BSS_PARAM |
 418                         STATION_INFO_CONNECTED_TIME |
 419                         STATION_INFO_STA_FLAGS |
 420                         STATION_INFO_BEACON_LOSS_COUNT;
 421
 422         do_posix_clock_monotonic_gettime(&uptime);
 423         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 424
 425         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 426         sinfo->rx_bytes = sta->rx_bytes;
 427         sinfo->tx_bytes = sta->tx_bytes;
 428         sinfo->rx_packets = sta->rx_packets;
 429         sinfo->tx_packets = sta->tx_packets;
 430         sinfo->tx_retries = sta->tx_retry_count;
 431         sinfo->tx_failed = sta->tx_retry_failed;
 432         sinfo->rx_dropped_misc = sta->rx_dropped;
 433         sinfo->beacon_loss_count = sta->beacon_loss_count;
 434
 435         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 436             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 437                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 438                 if (!local->ops->get_rssi ||
 439                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 440                         sinfo->signal = (s8)sta->last_signal;
 441                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 442         }
 443
 444         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 445
 446         sinfo->rxrate.flags = 0;
 447         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 448                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 449         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 450                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 451         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 452                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 453         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 454
 455         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 456 #ifdef CONFIG_MAC80211_MESH
 457                 sinfo->filled |= STATION_INFO_LLID |
 458                                  STATION_INFO_PLID |
 459                                  STATION_INFO_PLINK_STATE;
 460
 461                 sinfo->llid = le16_to_cpu(sta->llid);
 462                 sinfo->plid = le16_to_cpu(sta->plid);
 463                 sinfo->plink_state = sta->plink_state;
 464                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 465                         sinfo->filled |= STATION_INFO_T_OFFSET;
 466                         sinfo->t_offset = sta->t_offset;
 467                 }
 468 #endif
 469         }
 470
 471         sinfo->bss_param.flags = 0;
 472         if (sdata->vif.bss_conf.use_cts_prot)
 473                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 474         if (sdata->vif.bss_conf.use_short_preamble)
 475                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 476         if (sdata->vif.bss_conf.use_short_slot)
 477                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 478         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 479         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 480
 481         sinfo->sta_flags.set = 0;
 482         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 483                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 484                                 BIT(NL80211_STA_FLAG_WME) |
 485                                 BIT(NL80211_STA_FLAG_MFP) |
 486                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 487                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 488         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 489                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 490         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 491                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 492         if (test_sta_flag(sta, WLAN_STA_WME))
 493                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 494         if (test_sta_flag(sta, WLAN_STA_MFP))
 495                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 496         if (test_sta_flag(sta, WLAN_STA_AUTH))
 497                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 498         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 499                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 500 }
 501
 502 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 503         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 504         "rx_duplicates", "rx_fragments", "rx_dropped",
 505         "tx_packets", "tx_bytes", "tx_fragments",
 506         "tx_filtered", "tx_retry_failed", "tx_retries",
 507         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 508         "channel", "noise", "ch_time", "ch_time_busy",
 509         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 510 };
 511 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 512
 513 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 514                                        struct net_device *dev,
 515                                        int sset)
 516 {
 517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 518         int rv = 0;
 519
 520         if (sset == ETH_SS_STATS)
 521                 rv += STA_STATS_LEN;
 522
 523         rv += drv_get_et_sset_count(sdata, sset);
 524
 525         if (rv == 0)
 526                 return -EOPNOTSUPP;
 527         return rv;
 528 }
 529
 530 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 531                                    struct net_device *dev,
 532                                    struct ethtool_stats *stats,
 533                                    u64 *data)
 534 {
 535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 536         struct ieee80211_chanctx_conf *chanctx_conf;
 537         struct ieee80211_channel *channel;
 538         struct sta_info *sta;
 539         struct ieee80211_local *local = sdata->local;
 540         struct station_info sinfo;
 541         struct survey_info survey;
 542         int i, q;
 543 #define STA_STATS_SURVEY_LEN 7
 544
 545         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 546
 547 #define ADD_STA_STATS(sta)                              \
 548         do {                                            \
 549                 data[i++] += sta->rx_packets;           \
 550                 data[i++] += sta->rx_bytes;             \
 551                 data[i++] += sta->wep_weak_iv_count;    \
 552                 data[i++] += sta->num_duplicates;       \
 553                 data[i++] += sta->rx_fragments;         \
 554                 data[i++] += sta->rx_dropped;           \
 555                                                         \
 556                 data[i++] += sta->tx_packets;           \
 557                 data[i++] += sta->tx_bytes;             \
 558                 data[i++] += sta->tx_fragments;         \
 559                 data[i++] += sta->tx_filtered_count;    \
 560                 data[i++] += sta->tx_retry_failed;      \
 561                 data[i++] += sta->tx_retry_count;       \
 562                 data[i++] += sta->beacon_loss_count;    \
 563         } while (0)
 564
 565         /* For Managed stations, find the single station based on BSSID
 566          * and use that.  For interface types, iterate through all available
 567          * stations and add stats for any station that is assigned to this
 568          * network device.
 569          */
 570
 571         mutex_lock(&local->sta_mtx);
 572
 573         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 574                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 575
 576                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 577                         goto do_survey;
 578
 579                 i = 0;
 580                 ADD_STA_STATS(sta);
 581
 582                 data[i++] = sta->sta_state;
 583
 584                 sinfo.filled = 0;
 585                 sta_set_sinfo(sta, &sinfo);
 586
 587                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 588                         data[i] = 100000 *
 589                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 590                 i++;
 591                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 592                         data[i] = 100000 *
 593                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 594                 i++;
 595
 596                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 597                         data[i] = (u8)sinfo.signal_avg;
 598                 i++;
 599         } else {
 600                 list_for_each_entry(sta, &local->sta_list, list) {
 601                         /* Make sure this station belongs to the proper dev */
 602                         if (sta->sdata->dev != dev)
 603                                 continue;
 604
 605                         i = 0;
 606                         ADD_STA_STATS(sta);
 607                 }
 608         }
 609
 610 do_survey:
 611         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 612         /* Get survey stats for current channel */
 613         survey.filled = 0;
 614
 615         rcu_read_lock();
 616         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 617         if (chanctx_conf)
 618                 channel = chanctx_conf->channel;
 619         else
 620                 channel = NULL;
 621         rcu_read_unlock();
 622
 623         if (channel) {
 624                 q = 0;
 625                 do {
 626                         survey.filled = 0;
 627                         if (drv_get_survey(local, q, &survey) != 0) {
 628                                 survey.filled = 0;
 629                                 break;
 630                         }
 631                         q++;
 632                 } while (channel != survey.channel);
 633         }
 634
 635         if (survey.filled)
 636                 data[i++] = survey.channel->center_freq;
 637         else
 638                 data[i++] = 0;
 639         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 640                 data[i++] = (u8)survey.noise;
 641         else
 642                 data[i++] = -1LL;
 643         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 644                 data[i++] = survey.channel_time;
 645         else
 646                 data[i++] = -1LL;
 647         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 648                 data[i++] = survey.channel_time_busy;
 649         else
 650                 data[i++] = -1LL;
 651         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 652                 data[i++] = survey.channel_time_ext_busy;
 653         else
 654                 data[i++] = -1LL;
 655         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 656                 data[i++] = survey.channel_time_rx;
 657         else
 658                 data[i++] = -1LL;
 659         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 660                 data[i++] = survey.channel_time_tx;
 661         else
 662                 data[i++] = -1LL;
 663
 664         mutex_unlock(&local->sta_mtx);
 665
 666         if (WARN_ON(i != STA_STATS_LEN))
 667                 return;
 668
 669         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 670 }
 671
 672 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 673                                      struct net_device *dev,
 674                                      u32 sset, u8 *data)
 675 {
 676         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 677         int sz_sta_stats = 0;
 678
 679         if (sset == ETH_SS_STATS) {
 680                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 681                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 682         }
 683         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 684 }
 685
 686 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 687                                  int idx, u8 *mac, struct station_info *sinfo)
 688 {
 689         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 690         struct ieee80211_local *local = sdata->local;
 691         struct sta_info *sta;
 692         int ret = -ENOENT;
 693
 694         mutex_lock(&local->sta_mtx);
 695
 696         sta = sta_info_get_by_idx(sdata, idx);
 697         if (sta) {
 698                 ret = 0;
 699                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 700                 sta_set_sinfo(sta, sinfo);
 701         }
 702
 703         mutex_unlock(&local->sta_mtx);
 704
 705         return ret;
 706 }
 707
 708 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 709                                  int idx, struct survey_info *survey)
 710 {
 711         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 712
 713         return drv_get_survey(local, idx, survey);
 714 }
 715
 716 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 717                                  u8 *mac, struct station_info *sinfo)
 718 {
 719         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 720         struct ieee80211_local *local = sdata->local;
 721         struct sta_info *sta;
 722         int ret = -ENOENT;
 723
 724         mutex_lock(&local->sta_mtx);
 725
 726         sta = sta_info_get_bss(sdata, mac);
 727         if (sta) {
 728                 ret = 0;
 729                 sta_set_sinfo(sta, sinfo);
 730         }
 731
 732         mutex_unlock(&local->sta_mtx);
 733
 734         return ret;
 735 }
 736
 737 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 738                                          struct ieee80211_channel *chan,
 739                                          enum nl80211_channel_type channel_type)
 740 {
 741         struct ieee80211_local *local = wiphy_priv(wiphy);
 742         struct ieee80211_sub_if_data *sdata;
 743         int ret = 0;
 744
 745         if (local->monitor_channel == chan &&
 746             local->monitor_channel_type == channel_type)
 747                 return 0;
 748
 749         mutex_lock(&local->iflist_mtx);
 750         if (local->use_chanctx) {
 751                 sdata = rcu_dereference_protected(
 752                                 local->monitor_sdata,
 753                                 lockdep_is_held(&local->iflist_mtx));
 754                 if (sdata) {
 755                         ieee80211_vif_release_channel(sdata);
 756                         ret = ieee80211_vif_use_channel(
 757                                         sdata, chan, channel_type,
 758                                         IEEE80211_CHANCTX_EXCLUSIVE);
 759                 }
 760         } else if (local->open_count == local->monitors) {
 761                 local->_oper_channel = chan;
 762                 local->_oper_channel_type = channel_type;
 763                 ieee80211_hw_config(local, 0);
 764         }
 765
 766         if (ret == 0) {
 767                 local->monitor_channel = chan;
 768                 local->monitor_channel_type = channel_type;
 769         }
 770         mutex_unlock(&local->iflist_mtx);
 771
 772         return ret;
 773 }
 774
 775 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 776                                     const u8 *resp, size_t resp_len)
 777 {
 778         struct probe_resp *new, *old;
 779
 780         if (!resp || !resp_len)
 781                 return 1;
 782
 783         old = rtnl_dereference(sdata->u.ap.probe_resp);
 784
 785         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 786         if (!new)
 787                 return -ENOMEM;
 788
 789         new->len = resp_len;
 790         memcpy(new->data, resp, resp_len);
 791
 792         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 793         if (old)
 794                 kfree_rcu(old, rcu_head);
 795
 796         return 0;
 797 }
 798
 799 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 800                                    struct cfg80211_beacon_data *params)
 801 {
 802         struct beacon_data *new, *old;
 803         int new_head_len, new_tail_len;
 804         int size, err;
 805         u32 changed = BSS_CHANGED_BEACON;
 806
 807         old = rtnl_dereference(sdata->u.ap.beacon);
 808
 809         /* Need to have a beacon head if we don't have one yet */
 810         if (!params->head && !old)
 811                 return -EINVAL;
 812
 813         /* new or old head? */
 814         if (params->head)
 815                 new_head_len = params->head_len;
 816         else
 817                 new_head_len = old->head_len;
 818
 819         /* new or old tail? */
 820         if (params->tail || !old)
 821                 /* params->tail_len will be zero for !params->tail */
 822                 new_tail_len = params->tail_len;
 823         else
 824                 new_tail_len = old->tail_len;
 825
 826         size = sizeof(*new) + new_head_len + new_tail_len;
 827
 828         new = kzalloc(size, GFP_KERNEL);
 829         if (!new)
 830                 return -ENOMEM;
 831
 832         /* start filling the new info now */
 833
 834         /*
 835          * pointers go into the block we allocated,
 836          * memory is | beacon_data | head | tail |
 837          */
 838         new->head = ((u8 *) new) + sizeof(*new);
 839         new->tail = new->head + new_head_len;
 840         new->head_len = new_head_len;
 841         new->tail_len = new_tail_len;
 842
 843         /* copy in head */
 844         if (params->head)
 845                 memcpy(new->head, params->head, new_head_len);
 846         else
 847                 memcpy(new->head, old->head, new_head_len);
 848
 849         /* copy in optional tail */
 850         if (params->tail)
 851                 memcpy(new->tail, params->tail, new_tail_len);
 852         else
 853                 if (old)
 854                         memcpy(new->tail, old->tail, new_tail_len);
 855
 856         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 857                                        params->probe_resp_len);
 858         if (err < 0)
 859                 return err;
 860         if (err == 0)
 861                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 862
 863         rcu_assign_pointer(sdata->u.ap.beacon, new);
 864
 865         if (old)
 866                 kfree_rcu(old, rcu_head);
 867
 868         return changed;
 869 }
 870
 871 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 872                               struct cfg80211_ap_settings *params)
 873 {
 874         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 875         struct beacon_data *old;
 876         struct ieee80211_sub_if_data *vlan;
 877         u32 changed = BSS_CHANGED_BEACON_INT |
 878                       BSS_CHANGED_BEACON_ENABLED |
 879                       BSS_CHANGED_BEACON |
 880                       BSS_CHANGED_SSID;
 881         int err;
 882
 883         old = rtnl_dereference(sdata->u.ap.beacon);
 884         if (old)
 885                 return -EALREADY;
 886
 887         /* TODO: make hostapd tell us what it wants */
 888         sdata->smps_mode = IEEE80211_SMPS_OFF;
 889         sdata->needed_rx_chains = sdata->local->rx_chains;
 890
 891         err = ieee80211_vif_use_channel(sdata, params->channel,
 892                                         params->channel_type,
 893                                         IEEE80211_CHANCTX_SHARED);
 894         if (err)
 895                 return err;
 896
 897         /*
 898          * Apply control port protocol, this allows us to
 899          * not encrypt dynamic WEP control frames.
 900          */
 901         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 902         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 903         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 904                 vlan->control_port_protocol =
 905                         params->crypto.control_port_ethertype;
 906                 vlan->control_port_no_encrypt =
 907                         params->crypto.control_port_no_encrypt;
 908         }
 909
 910         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 911         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 912
 913         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 914         if (params->ssid_len)
 915                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 916                        params->ssid_len);
 917         sdata->vif.bss_conf.hidden_ssid =
 918                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 919
 920         err = ieee80211_assign_beacon(sdata, &params->beacon);
 921         if (err < 0)
 922                 return err;
 923         changed |= err;
 924
 925         ieee80211_bss_info_change_notify(sdata, changed);
 926
 927         netif_carrier_on(dev);
 928         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 929                 netif_carrier_on(vlan->dev);
 930
 931         return 0;
 932 }
 933
 934 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 935                                    struct cfg80211_beacon_data *params)
 936 {
 937         struct ieee80211_sub_if_data *sdata;
 938         struct beacon_data *old;
 939         int err;
 940
 941         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 942
 943         old = rtnl_dereference(sdata->u.ap.beacon);
 944         if (!old)
 945                 return -ENOENT;
 946
 947         err = ieee80211_assign_beacon(sdata, params);
 948         if (err < 0)
 949                 return err;
 950         ieee80211_bss_info_change_notify(sdata, err);
 951         return 0;
 952 }
 953
 954 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 955 {
 956         struct ieee80211_sub_if_data *sdata, *vlan;
 957         struct beacon_data *old;
 958
 959         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 960
 961         old = rtnl_dereference(sdata->u.ap.beacon);
 962         if (!old)
 963                 return -ENOENT;
 964
 965         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 966                 netif_carrier_off(vlan->dev);
 967         netif_carrier_off(dev);
 968
 969         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 970
 971         kfree_rcu(old, rcu_head);
 972
 973         sta_info_flush(sdata->local, sdata);
 974         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 975
 976         ieee80211_vif_release_channel(sdata);
 977
 978         return 0;
 979 }
 980
 981 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 982 struct iapp_layer2_update {
 983         u8 da[ETH_ALEN];        /* broadcast */
 984         u8 sa[ETH_ALEN];        /* STA addr */
 985         __be16 len;             /* 6 */
 986         u8 dsap;                /* 0 */
 987         u8 ssap;                /* 0 */
 988         u8 control;
 989         u8 xid_info[3];
 990 } __packed;
 991
 992 static void ieee80211_send_layer2_update(struct sta_info *sta)
 993 {
 994         struct iapp_layer2_update *msg;
 995         struct sk_buff *skb;
 996
 997         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 998          * bridge devices */
 999
1000         skb = dev_alloc_skb(sizeof(*msg));
1001         if (!skb)
1002                 return;
1003         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1004
1005         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1006          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1007
1008         eth_broadcast_addr(msg->da);
1009         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1010         msg->len = htons(6);
1011         msg->dsap = 0;
1012         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1013         msg->control = 0xaf;    /* XID response lsb.1111F101.
1014                                  * F=0 (no poll command; unsolicited frame) */
1015         msg->xid_info[0] = 0x81;        /* XID format identifier */
1016         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1017         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1018
1019         skb->dev = sta->sdata->dev;
1020         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1021         memset(skb->cb, 0, sizeof(skb->cb));
1022         netif_rx_ni(skb);
1023 }
1024
1025 static int sta_apply_parameters(struct ieee80211_local *local,
1026                                 struct sta_info *sta,
1027                                 struct station_parameters *params)
1028 {
1029         int ret = 0;
1030         u32 rates;
1031         int i, j;
1032         struct ieee80211_supported_band *sband;
1033         struct ieee80211_sub_if_data *sdata = sta->sdata;
1034         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1035         u32 mask, set;
1036
1037         sband = local->hw.wiphy->bands[band];
1038
1039         mask = params->sta_flags_mask;
1040         set = params->sta_flags_set;
1041
1042         /*
1043          * In mesh mode, we can clear AUTHENTICATED flag but must
1044          * also make ASSOCIATED follow appropriately for the driver
1045          * API. See also below, after AUTHORIZED changes.
1046          */
1047         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1048                 /* cfg80211 should not allow this in non-mesh modes */
1049                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1050                         return -EINVAL;
1051
1052                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1053                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1054                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1055                         if (ret)
1056                                 return ret;
1057                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1058                         if (ret)
1059                                 return ret;
1060                 }
1061         }
1062
1063         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1064                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1065                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1066                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1067                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1068                 if (ret)
1069                         return ret;
1070         }
1071
1072         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1073                 /* cfg80211 should not allow this in non-mesh modes */
1074                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1075                         return -EINVAL;
1076
1077                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1078                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1079                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1080                         if (ret)
1081                                 return ret;
1082                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1083                         if (ret)
1084                                 return ret;
1085                 }
1086         }
1087
1088
1089         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1090                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1091                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1092                 else
1093                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1094         }
1095
1096         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1097                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1098                         set_sta_flag(sta, WLAN_STA_WME);
1099                         sta->sta.wme = true;
1100                 } else {
1101                         clear_sta_flag(sta, WLAN_STA_WME);
1102                         sta->sta.wme = false;
1103                 }
1104         }
1105
1106         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1107                 if (set & BIT(NL80211_STA_FLAG_MFP))
1108                         set_sta_flag(sta, WLAN_STA_MFP);
1109                 else
1110                         clear_sta_flag(sta, WLAN_STA_MFP);
1111         }
1112
1113         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1114                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1115                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1116                 else
1117                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1118         }
1119
1120         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1121                 sta->sta.uapsd_queues = params->uapsd_queues;
1122                 sta->sta.max_sp = params->max_sp;
1123         }
1124
1125         /*
1126          * cfg80211 validates this (1-2007) and allows setting the AID
1127          * only when creating a new station entry
1128          */
1129         if (params->aid)
1130                 sta->sta.aid = params->aid;
1131
1132         /*
1133          * FIXME: updating the following information is racy when this
1134          *        function is called from ieee80211_change_station().
1135          *        However, all this information should be static so
1136          *        maybe we should just reject attemps to change it.
1137          */
1138
1139         if (params->listen_interval >= 0)
1140                 sta->listen_interval = params->listen_interval;
1141
1142         if (params->supported_rates) {
1143                 rates = 0;
1144
1145                 for (i = 0; i < params->supported_rates_len; i++) {
1146                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1147                         for (j = 0; j < sband->n_bitrates; j++) {
1148                                 if (sband->bitrates[j].bitrate == rate)
1149                                         rates |= BIT(j);
1150                         }
1151                 }
1152                 sta->sta.supp_rates[band] = rates;
1153         }
1154
1155         if (params->ht_capa)
1156                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1157                                                   params->ht_capa,
1158                                                   &sta->sta.ht_cap);
1159
1160         if (params->vht_capa)
1161                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1162                                                     params->vht_capa,
1163                                                     &sta->sta.vht_cap);
1164
1165         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1166 #ifdef CONFIG_MAC80211_MESH
1167                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1168                         switch (params->plink_state) {
1169                         case NL80211_PLINK_LISTEN:
1170                         case NL80211_PLINK_ESTAB:
1171                         case NL80211_PLINK_BLOCKED:
1172                                 sta->plink_state = params->plink_state;
1173                                 break;
1174                         default:
1175                                 /*  nothing  */
1176                                 break;
1177                         }
1178                 else
1179                         switch (params->plink_action) {
1180                         case PLINK_ACTION_OPEN:
1181                                 mesh_plink_open(sta);
1182                                 break;
1183                         case PLINK_ACTION_BLOCK:
1184                                 mesh_plink_block(sta);
1185                                 break;
1186                         }
1187 #endif
1188         }
1189
1190         return 0;
1191 }
1192
1193 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1194                                  u8 *mac, struct station_parameters *params)
1195 {
1196         struct ieee80211_local *local = wiphy_priv(wiphy);
1197         struct sta_info *sta;
1198         struct ieee80211_sub_if_data *sdata;
1199         int err;
1200         int layer2_update;
1201
1202         if (params->vlan) {
1203                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1204
1205                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1206                     sdata->vif.type != NL80211_IFTYPE_AP)
1207                         return -EINVAL;
1208         } else
1209                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1210
1211         if (ether_addr_equal(mac, sdata->vif.addr))
1212                 return -EINVAL;
1213
1214         if (is_multicast_ether_addr(mac))
1215                 return -EINVAL;
1216
1217         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1218         if (!sta)
1219                 return -ENOMEM;
1220
1221         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1222         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1223
1224         err = sta_apply_parameters(local, sta, params);
1225         if (err) {
1226                 sta_info_free(local, sta);
1227                 return err;
1228         }
1229
1230         /*
1231          * for TDLS, rate control should be initialized only when supported
1232          * rates are known.
1233          */
1234         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1235                 rate_control_rate_init(sta);
1236
1237         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1238                 sdata->vif.type == NL80211_IFTYPE_AP;
1239
1240         err = sta_info_insert_rcu(sta);
1241         if (err) {
1242                 rcu_read_unlock();
1243                 return err;
1244         }
1245
1246         if (layer2_update)
1247                 ieee80211_send_layer2_update(sta);
1248
1249         rcu_read_unlock();
1250
1251         return 0;
1252 }
1253
1254 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1255                                  u8 *mac)
1256 {
1257         struct ieee80211_local *local = wiphy_priv(wiphy);
1258         struct ieee80211_sub_if_data *sdata;
1259
1260         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1261
1262         if (mac)
1263                 return sta_info_destroy_addr_bss(sdata, mac);
1264
1265         sta_info_flush(local, sdata);
1266         return 0;
1267 }
1268
1269 static int ieee80211_change_station(struct wiphy *wiphy,
1270                                     struct net_device *dev,
1271                                     u8 *mac,
1272                                     struct station_parameters *params)
1273 {
1274         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1275         struct ieee80211_local *local = wiphy_priv(wiphy);
1276         struct sta_info *sta;
1277         struct ieee80211_sub_if_data *vlansdata;
1278         int err;
1279
1280         mutex_lock(&local->sta_mtx);
1281
1282         sta = sta_info_get_bss(sdata, mac);
1283         if (!sta) {
1284                 mutex_unlock(&local->sta_mtx);
1285                 return -ENOENT;
1286         }
1287
1288         /* in station mode, supported rates are only valid with TDLS */
1289         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1290             params->supported_rates &&
1291             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1292                 mutex_unlock(&local->sta_mtx);
1293                 return -EINVAL;
1294         }
1295
1296         if (params->vlan && params->vlan != sta->sdata->dev) {
1297                 bool prev_4addr = false;
1298                 bool new_4addr = false;
1299
1300                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1301
1302                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1303                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1304                         mutex_unlock(&local->sta_mtx);
1305                         return -EINVAL;
1306                 }
1307
1308                 if (params->vlan->ieee80211_ptr->use_4addr) {
1309                         if (vlansdata->u.vlan.sta) {
1310                                 mutex_unlock(&local->sta_mtx);
1311                                 return -EBUSY;
1312                         }
1313
1314                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1315                         new_4addr = true;
1316                 }
1317
1318                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1319                     sta->sdata->u.vlan.sta) {
1320                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1321                         prev_4addr = true;
1322                 }
1323
1324                 sta->sdata = vlansdata;
1325
1326                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1327                     prev_4addr != new_4addr) {
1328                         if (new_4addr)
1329                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1330                         else
1331                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1332                 }
1333
1334                 ieee80211_send_layer2_update(sta);
1335         }
1336
1337         err = sta_apply_parameters(local, sta, params);
1338         if (err) {
1339                 mutex_unlock(&local->sta_mtx);
1340                 return err;
1341         }
1342
1343         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1344                 rate_control_rate_init(sta);
1345
1346         mutex_unlock(&local->sta_mtx);
1347
1348         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1349             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1350                 ieee80211_recalc_ps(local, -1);
1351                 ieee80211_recalc_ps_vif(sdata);
1352         }
1353         return 0;
1354 }
1355
1356 #ifdef CONFIG_MAC80211_MESH
1357 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1358                                  u8 *dst, u8 *next_hop)
1359 {
1360         struct ieee80211_sub_if_data *sdata;
1361         struct mesh_path *mpath;
1362         struct sta_info *sta;
1363         int err;
1364
1365         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1366
1367         rcu_read_lock();
1368         sta = sta_info_get(sdata, next_hop);
1369         if (!sta) {
1370                 rcu_read_unlock();
1371                 return -ENOENT;
1372         }
1373
1374         err = mesh_path_add(dst, sdata);
1375         if (err) {
1376                 rcu_read_unlock();
1377                 return err;
1378         }
1379
1380         mpath = mesh_path_lookup(dst, sdata);
1381         if (!mpath) {
1382                 rcu_read_unlock();
1383                 return -ENXIO;
1384         }
1385         mesh_path_fix_nexthop(mpath, sta);
1386
1387         rcu_read_unlock();
1388         return 0;
1389 }
1390
1391 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1392                                  u8 *dst)
1393 {
1394         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1395
1396         if (dst)
1397                 return mesh_path_del(dst, sdata);
1398
1399         mesh_path_flush_by_iface(sdata);
1400         return 0;
1401 }
1402
1403 static int ieee80211_change_mpath(struct wiphy *wiphy,
1404                                     struct net_device *dev,
1405                                     u8 *dst, u8 *next_hop)
1406 {
1407         struct ieee80211_sub_if_data *sdata;
1408         struct mesh_path *mpath;
1409         struct sta_info *sta;
1410
1411         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1412
1413         rcu_read_lock();
1414
1415         sta = sta_info_get(sdata, next_hop);
1416         if (!sta) {
1417                 rcu_read_unlock();
1418                 return -ENOENT;
1419         }
1420
1421         mpath = mesh_path_lookup(dst, sdata);
1422         if (!mpath) {
1423                 rcu_read_unlock();
1424                 return -ENOENT;
1425         }
1426
1427         mesh_path_fix_nexthop(mpath, sta);
1428
1429         rcu_read_unlock();
1430         return 0;
1431 }
1432
1433 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1434                             struct mpath_info *pinfo)
1435 {
1436         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1437
1438         if (next_hop_sta)
1439                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1440         else
1441                 memset(next_hop, 0, ETH_ALEN);
1442
1443         memset(pinfo, 0, sizeof(*pinfo));
1444
1445         pinfo->generation = mesh_paths_generation;
1446
1447         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1448                         MPATH_INFO_SN |
1449                         MPATH_INFO_METRIC |
1450                         MPATH_INFO_EXPTIME |
1451                         MPATH_INFO_DISCOVERY_TIMEOUT |
1452                         MPATH_INFO_DISCOVERY_RETRIES |
1453                         MPATH_INFO_FLAGS;
1454
1455         pinfo->frame_qlen = mpath->frame_queue.qlen;
1456         pinfo->sn = mpath->sn;
1457         pinfo->metric = mpath->metric;
1458         if (time_before(jiffies, mpath->exp_time))
1459                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1460         pinfo->discovery_timeout =
1461                         jiffies_to_msecs(mpath->discovery_timeout);
1462         pinfo->discovery_retries = mpath->discovery_retries;
1463         if (mpath->flags & MESH_PATH_ACTIVE)
1464                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1465         if (mpath->flags & MESH_PATH_RESOLVING)
1466                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1467         if (mpath->flags & MESH_PATH_SN_VALID)
1468                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1469         if (mpath->flags & MESH_PATH_FIXED)
1470                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1471         if (mpath->flags & MESH_PATH_RESOLVED)
1472                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1473 }
1474
1475 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1476                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1477
1478 {
1479         struct ieee80211_sub_if_data *sdata;
1480         struct mesh_path *mpath;
1481
1482         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1483
1484         rcu_read_lock();
1485         mpath = mesh_path_lookup(dst, sdata);
1486         if (!mpath) {
1487                 rcu_read_unlock();
1488                 return -ENOENT;
1489         }
1490         memcpy(dst, mpath->dst, ETH_ALEN);
1491         mpath_set_pinfo(mpath, next_hop, pinfo);
1492         rcu_read_unlock();
1493         return 0;
1494 }
1495
1496 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1497                                  int idx, u8 *dst, u8 *next_hop,
1498                                  struct mpath_info *pinfo)
1499 {
1500         struct ieee80211_sub_if_data *sdata;
1501         struct mesh_path *mpath;
1502
1503         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1504
1505         rcu_read_lock();
1506         mpath = mesh_path_lookup_by_idx(idx, sdata);
1507         if (!mpath) {
1508                 rcu_read_unlock();
1509                 return -ENOENT;
1510         }
1511         memcpy(dst, mpath->dst, ETH_ALEN);
1512         mpath_set_pinfo(mpath, next_hop, pinfo);
1513         rcu_read_unlock();
1514         return 0;
1515 }
1516
1517 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1518                                 struct net_device *dev,
1519                                 struct mesh_config *conf)
1520 {
1521         struct ieee80211_sub_if_data *sdata;
1522         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1523
1524         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1525         return 0;
1526 }
1527
1528 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1529 {
1530         return (mask >> (parm-1)) & 0x1;
1531 }
1532
1533 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1534                 const struct mesh_setup *setup)
1535 {
1536         u8 *new_ie;
1537         const u8 *old_ie;
1538         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1539                                         struct ieee80211_sub_if_data, u.mesh);
1540
1541         /* allocate information elements */
1542         new_ie = NULL;
1543         old_ie = ifmsh->ie;
1544
1545         if (setup->ie_len) {
1546                 new_ie = kmemdup(setup->ie, setup->ie_len,
1547                                 GFP_KERNEL);
1548                 if (!new_ie)
1549                         return -ENOMEM;
1550         }
1551         ifmsh->ie_len = setup->ie_len;
1552         ifmsh->ie = new_ie;
1553         kfree(old_ie);
1554
1555         /* now copy the rest of the setup parameters */
1556         ifmsh->mesh_id_len = setup->mesh_id_len;
1557         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1558         ifmsh->mesh_sp_id = setup->sync_method;
1559         ifmsh->mesh_pp_id = setup->path_sel_proto;
1560         ifmsh->mesh_pm_id = setup->path_metric;
1561         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1562         if (setup->is_authenticated)
1563                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1564         if (setup->is_secure)
1565                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1566
1567         /* mcast rate setting in Mesh Node */
1568         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1569                                                 sizeof(setup->mcast_rate));
1570
1571         return 0;
1572 }
1573
1574 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1575                                         struct net_device *dev, u32 mask,
1576                                         const struct mesh_config *nconf)
1577 {
1578         struct mesh_config *conf;
1579         struct ieee80211_sub_if_data *sdata;
1580         struct ieee80211_if_mesh *ifmsh;
1581
1582         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1583         ifmsh = &sdata->u.mesh;
1584
1585         /* Set the config options which we are interested in setting */
1586         conf = &(sdata->u.mesh.mshcfg);
1587         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1588                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1589         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1590                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1591         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1592                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1593         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1594                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1595         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1596                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1597         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1598                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1599         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1600                 conf->element_ttl = nconf->element_ttl;
1601         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1602                 conf->auto_open_plinks = nconf->auto_open_plinks;
1603         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1604                 conf->dot11MeshNbrOffsetMaxNeighbor =
1605                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1606         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1607                 conf->dot11MeshHWMPmaxPREQretries =
1608                         nconf->dot11MeshHWMPmaxPREQretries;
1609         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1610                 conf->path_refresh_time = nconf->path_refresh_time;
1611         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1612                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1613         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1614                 conf->dot11MeshHWMPactivePathTimeout =
1615                         nconf->dot11MeshHWMPactivePathTimeout;
1616         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1617                 conf->dot11MeshHWMPpreqMinInterval =
1618                         nconf->dot11MeshHWMPpreqMinInterval;
1619         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1620                 conf->dot11MeshHWMPperrMinInterval =
1621                         nconf->dot11MeshHWMPperrMinInterval;
1622         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1623                            mask))
1624                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1625                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1626         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1627                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1628                 ieee80211_mesh_root_setup(ifmsh);
1629         }
1630         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1631                 /* our current gate announcement implementation rides on root
1632                  * announcements, so require this ifmsh to also be a root node
1633                  * */
1634                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1635                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1636                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1637                         ieee80211_mesh_root_setup(ifmsh);
1638                 }
1639                 conf->dot11MeshGateAnnouncementProtocol =
1640                         nconf->dot11MeshGateAnnouncementProtocol;
1641         }
1642         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1643                 conf->dot11MeshHWMPRannInterval =
1644                         nconf->dot11MeshHWMPRannInterval;
1645         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1646                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1647         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1648                 /* our RSSI threshold implementation is supported only for
1649                  * devices that report signal in dBm.
1650                  */
1651                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1652                         return -ENOTSUPP;
1653                 conf->rssi_threshold = nconf->rssi_threshold;
1654         }
1655         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1656                 conf->ht_opmode = nconf->ht_opmode;
1657                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1658                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1659         }
1660         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1661                 conf->dot11MeshHWMPactivePathToRootTimeout =
1662                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1663         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1664                 conf->dot11MeshHWMProotInterval =
1665                         nconf->dot11MeshHWMProotInterval;
1666         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1667                 conf->dot11MeshHWMPconfirmationInterval =
1668                         nconf->dot11MeshHWMPconfirmationInterval;
1669         return 0;
1670 }
1671
1672 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1673                                const struct mesh_config *conf,
1674                                const struct mesh_setup *setup)
1675 {
1676         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1677         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1678         int err;
1679
1680         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1681         err = copy_mesh_setup(ifmsh, setup);
1682         if (err)
1683                 return err;
1684
1685         /* can mesh use other SMPS modes? */
1686         sdata->smps_mode = IEEE80211_SMPS_OFF;
1687         sdata->needed_rx_chains = sdata->local->rx_chains;
1688
1689         err = ieee80211_vif_use_channel(sdata, setup->channel,
1690                                         setup->channel_type,
1691                                         IEEE80211_CHANCTX_SHARED);
1692         if (err)
1693                 return err;
1694
1695         ieee80211_start_mesh(sdata);
1696
1697         return 0;
1698 }
1699
1700 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1701 {
1702         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1703
1704         ieee80211_stop_mesh(sdata);
1705         ieee80211_vif_release_channel(sdata);
1706
1707         return 0;
1708 }
1709 #endif
1710
1711 static int ieee80211_change_bss(struct wiphy *wiphy,
1712                                 struct net_device *dev,
1713                                 struct bss_parameters *params)
1714 {
1715         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1716         enum ieee80211_band band;
1717         u32 changed = 0;
1718
1719         if (!rtnl_dereference(sdata->u.ap.beacon))
1720                 return -ENOENT;
1721
1722         band = ieee80211_get_sdata_band(sdata);
1723
1724         if (params->use_cts_prot >= 0) {
1725                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1726                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1727         }
1728         if (params->use_short_preamble >= 0) {
1729                 sdata->vif.bss_conf.use_short_preamble =
1730                         params->use_short_preamble;
1731                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1732         }
1733
1734         if (!sdata->vif.bss_conf.use_short_slot &&
1735             band == IEEE80211_BAND_5GHZ) {
1736                 sdata->vif.bss_conf.use_short_slot = true;
1737                 changed |= BSS_CHANGED_ERP_SLOT;
1738         }
1739
1740         if (params->use_short_slot_time >= 0) {
1741                 sdata->vif.bss_conf.use_short_slot =
1742                         params->use_short_slot_time;
1743                 changed |= BSS_CHANGED_ERP_SLOT;
1744         }
1745
1746         if (params->basic_rates) {
1747                 int i, j;
1748                 u32 rates = 0;
1749                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1750
1751                 for (i = 0; i < params->basic_rates_len; i++) {
1752                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1753                         for (j = 0; j < sband->n_bitrates; j++) {
1754                                 if (sband->bitrates[j].bitrate == rate)
1755                                         rates |= BIT(j);
1756                         }
1757                 }
1758                 sdata->vif.bss_conf.basic_rates = rates;
1759                 changed |= BSS_CHANGED_BASIC_RATES;
1760         }
1761
1762         if (params->ap_isolate >= 0) {
1763                 if (params->ap_isolate)
1764                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1765                 else
1766                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1767         }
1768
1769         if (params->ht_opmode >= 0) {
1770                 sdata->vif.bss_conf.ht_operation_mode =
1771                         (u16) params->ht_opmode;
1772                 changed |= BSS_CHANGED_HT;
1773         }
1774
1775         ieee80211_bss_info_change_notify(sdata, changed);
1776
1777         return 0;
1778 }
1779
1780 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1781                                     struct net_device *dev,
1782                                     struct ieee80211_txq_params *params)
1783 {
1784         struct ieee80211_local *local = wiphy_priv(wiphy);
1785         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1786         struct ieee80211_tx_queue_params p;
1787
1788         if (!local->ops->conf_tx)
1789                 return -EOPNOTSUPP;
1790
1791         if (local->hw.queues < IEEE80211_NUM_ACS)
1792                 return -EOPNOTSUPP;
1793
1794         memset(&p, 0, sizeof(p));
1795         p.aifs = params->aifs;
1796         p.cw_max = params->cwmax;
1797         p.cw_min = params->cwmin;
1798         p.txop = params->txop;
1799
1800         /*
1801          * Setting tx queue params disables u-apsd because it's only
1802          * called in master mode.
1803          */
1804         p.uapsd = false;
1805
1806         sdata->tx_conf[params->ac] = p;
1807         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1808                 wiphy_debug(local->hw.wiphy,
1809                             "failed to set TX queue parameters for AC %d\n",
1810                             params->ac);
1811                 return -EINVAL;
1812         }
1813
1814         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1815
1816         return 0;
1817 }
1818
1819 #ifdef CONFIG_PM
1820 static int ieee80211_suspend(struct wiphy *wiphy,
1821                              struct cfg80211_wowlan *wowlan)
1822 {
1823         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1824 }
1825
1826 static int ieee80211_resume(struct wiphy *wiphy)
1827 {
1828         return __ieee80211_resume(wiphy_priv(wiphy));
1829 }
1830 #else
1831 #define ieee80211_suspend NULL
1832 #define ieee80211_resume NULL
1833 #endif
1834
1835 static int ieee80211_scan(struct wiphy *wiphy,
1836                           struct cfg80211_scan_request *req)
1837 {
1838         struct ieee80211_sub_if_data *sdata;
1839
1840         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1841
1842         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1843         case NL80211_IFTYPE_STATION:
1844         case NL80211_IFTYPE_ADHOC:
1845         case NL80211_IFTYPE_MESH_POINT:
1846         case NL80211_IFTYPE_P2P_CLIENT:
1847         case NL80211_IFTYPE_P2P_DEVICE:
1848                 break;
1849         case NL80211_IFTYPE_P2P_GO:
1850                 if (sdata->local->ops->hw_scan)
1851                         break;
1852                 /*
1853                  * FIXME: implement NoA while scanning in software,
1854                  * for now fall through to allow scanning only when
1855                  * beaconing hasn't been configured yet
1856                  */
1857         case NL80211_IFTYPE_AP:
1858                 /*
1859                  * If the scan has been forced (and the driver supports
1860                  * forcing), don't care about being beaconing already.
1861                  * This will create problems to the attached stations (e.g. all
1862                  * the  frames sent while scanning on other channel will be
1863                  * lost)
1864                  */
1865                 if (sdata->u.ap.beacon &&
1866                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1867                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1868                         return -EOPNOTSUPP;
1869                 break;
1870         default:
1871                 return -EOPNOTSUPP;
1872         }
1873
1874         return ieee80211_request_scan(sdata, req);
1875 }
1876
1877 static int
1878 ieee80211_sched_scan_start(struct wiphy *wiphy,
1879                            struct net_device *dev,
1880                            struct cfg80211_sched_scan_request *req)
1881 {
1882         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1883
1884         if (!sdata->local->ops->sched_scan_start)
1885                 return -EOPNOTSUPP;
1886
1887         return ieee80211_request_sched_scan_start(sdata, req);
1888 }
1889
1890 static int
1891 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1892 {
1893         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1894
1895         if (!sdata->local->ops->sched_scan_stop)
1896                 return -EOPNOTSUPP;
1897
1898         return ieee80211_request_sched_scan_stop(sdata);
1899 }
1900
1901 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1902                           struct cfg80211_auth_request *req)
1903 {
1904         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1905 }
1906
1907 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1908                            struct cfg80211_assoc_request *req)
1909 {
1910         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1911 }
1912
1913 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1914                             struct cfg80211_deauth_request *req)
1915 {
1916         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1917 }
1918
1919 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1920                               struct cfg80211_disassoc_request *req)
1921 {
1922         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1923 }
1924
1925 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1926                                struct cfg80211_ibss_params *params)
1927 {
1928         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1929 }
1930
1931 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1932 {
1933         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1934 }
1935
1936 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1937 {
1938         struct ieee80211_local *local = wiphy_priv(wiphy);
1939         int err;
1940
1941         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1942                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1943
1944                 if (err)
1945                         return err;
1946         }
1947
1948         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1949                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1950
1951                 if (err)
1952                         return err;
1953         }
1954
1955         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1956                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1957
1958                 if (err)
1959                         return err;
1960         }
1961
1962         if (changed & WIPHY_PARAM_RETRY_SHORT)
1963                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1964         if (changed & WIPHY_PARAM_RETRY_LONG)
1965                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1966         if (changed &
1967             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1968                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1969
1970         return 0;
1971 }
1972
1973 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1974                                   enum nl80211_tx_power_setting type, int mbm)
1975 {
1976         struct ieee80211_local *local = wiphy_priv(wiphy);
1977         struct ieee80211_channel *chan = local->_oper_channel;
1978         u32 changes = 0;
1979
1980         /* FIXME */
1981         if (local->use_chanctx)
1982                 return -EOPNOTSUPP;
1983
1984         switch (type) {
1985         case NL80211_TX_POWER_AUTOMATIC:
1986                 local->user_power_level = -1;
1987                 break;
1988         case NL80211_TX_POWER_LIMITED:
1989                 if (mbm < 0 || (mbm % 100))
1990                         return -EOPNOTSUPP;
1991                 local->user_power_level = MBM_TO_DBM(mbm);
1992                 break;
1993         case NL80211_TX_POWER_FIXED:
1994                 if (mbm < 0 || (mbm % 100))
1995                         return -EOPNOTSUPP;
1996                 /* TODO: move to cfg80211 when it knows the channel */
1997                 if (MBM_TO_DBM(mbm) > chan->max_power)
1998                         return -EINVAL;
1999                 local->user_power_level = MBM_TO_DBM(mbm);
2000                 break;
2001         }
2002
2003         ieee80211_hw_config(local, changes);
2004
2005         return 0;
2006 }
2007
2008 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
2009 {
2010         struct ieee80211_local *local = wiphy_priv(wiphy);
2011
2012         *dbm = local->hw.conf.power_level;
2013
2014         return 0;
2015 }
2016
2017 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2018                                   const u8 *addr)
2019 {
2020         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2021
2022         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2023
2024         return 0;
2025 }
2026
2027 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2028 {
2029         struct ieee80211_local *local = wiphy_priv(wiphy);
2030
2031         drv_rfkill_poll(local);
2032 }
2033
2034 #ifdef CONFIG_NL80211_TESTMODE
2035 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2036 {
2037         struct ieee80211_local *local = wiphy_priv(wiphy);
2038
2039         if (!local->ops->testmode_cmd)
2040                 return -EOPNOTSUPP;
2041
2042         return local->ops->testmode_cmd(&local->hw, data, len);
2043 }
2044
2045 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2046                                    struct sk_buff *skb,
2047                                    struct netlink_callback *cb,
2048                                    void *data, int len)
2049 {
2050         struct ieee80211_local *local = wiphy_priv(wiphy);
2051
2052         if (!local->ops->testmode_dump)
2053                 return -EOPNOTSUPP;
2054
2055         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2056 }
2057 #endif
2058
2059 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2060                              enum ieee80211_smps_mode smps_mode)
2061 {
2062         const u8 *ap;
2063         enum ieee80211_smps_mode old_req;
2064         int err;
2065
2066         lockdep_assert_held(&sdata->u.mgd.mtx);
2067
2068         old_req = sdata->u.mgd.req_smps;
2069         sdata->u.mgd.req_smps = smps_mode;
2070
2071         if (old_req == smps_mode &&
2072             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2073                 return 0;
2074
2075         /*
2076          * If not associated, or current association is not an HT
2077          * association, there's no need to do anything, just store
2078          * the new value until we associate.
2079          */
2080         if (!sdata->u.mgd.associated ||
2081             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
2082                 return 0;
2083
2084         ap = sdata->u.mgd.associated->bssid;
2085
2086         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2087                 if (sdata->u.mgd.powersave)
2088                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2089                 else
2090                         smps_mode = IEEE80211_SMPS_OFF;
2091         }
2092
2093         /* send SM PS frame to AP */
2094         err = ieee80211_send_smps_action(sdata, smps_mode,
2095                                          ap, ap);
2096         if (err)
2097                 sdata->u.mgd.req_smps = old_req;
2098
2099         return err;
2100 }
2101
2102 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2103                                     bool enabled, int timeout)
2104 {
2105         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2106         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2107
2108         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2109                 return -EOPNOTSUPP;
2110
2111         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2112                 return -EOPNOTSUPP;
2113
2114         if (enabled == sdata->u.mgd.powersave &&
2115             timeout == local->dynamic_ps_forced_timeout)
2116                 return 0;
2117
2118         sdata->u.mgd.powersave = enabled;
2119         local->dynamic_ps_forced_timeout = timeout;
2120
2121         /* no change, but if automatic follow powersave */
2122         mutex_lock(&sdata->u.mgd.mtx);
2123         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2124         mutex_unlock(&sdata->u.mgd.mtx);
2125
2126         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2127                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2128
2129         ieee80211_recalc_ps(local, -1);
2130         ieee80211_recalc_ps_vif(sdata);
2131
2132         return 0;
2133 }
2134
2135 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2136                                          struct net_device *dev,
2137                                          s32 rssi_thold, u32 rssi_hyst)
2138 {
2139         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2140         struct ieee80211_vif *vif = &sdata->vif;
2141         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2142
2143         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2144             rssi_hyst == bss_conf->cqm_rssi_hyst)
2145                 return 0;
2146
2147         bss_conf->cqm_rssi_thold = rssi_thold;
2148         bss_conf->cqm_rssi_hyst = rssi_hyst;
2149
2150         /* tell the driver upon association, unless already associated */
2151         if (sdata->u.mgd.associated &&
2152             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2153                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2154
2155         return 0;
2156 }
2157
2158 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2159                                       struct net_device *dev,
2160                                       const u8 *addr,
2161                                       const struct cfg80211_bitrate_mask *mask)
2162 {
2163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2164         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2165         int i, ret;
2166
2167         if (!ieee80211_sdata_running(sdata))
2168                 return -ENETDOWN;
2169
2170         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2171                 ret = drv_set_bitrate_mask(local, sdata, mask);
2172                 if (ret)
2173                         return ret;
2174         }
2175
2176         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2177                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2178                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2179                        sizeof(mask->control[i].mcs));
2180         }
2181
2182         return 0;
2183 }
2184
2185 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2186                                     struct ieee80211_sub_if_data *sdata,
2187                                     struct ieee80211_channel *channel,
2188                                     enum nl80211_channel_type channel_type,
2189                                     unsigned int duration, u64 *cookie,
2190                                     struct sk_buff *txskb)
2191 {
2192         struct ieee80211_roc_work *roc, *tmp;
2193         bool queued = false;
2194         int ret;
2195
2196         lockdep_assert_held(&local->mtx);
2197
2198         if (local->use_chanctx && !local->ops->remain_on_channel)
2199                 return -EOPNOTSUPP;
2200
2201         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2202         if (!roc)
2203                 return -ENOMEM;
2204
2205         roc->chan = channel;
2206         roc->chan_type = channel_type;
2207         roc->duration = duration;
2208         roc->req_duration = duration;
2209         roc->frame = txskb;
2210         roc->mgmt_tx_cookie = (unsigned long)txskb;
2211         roc->sdata = sdata;
2212         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2213         INIT_LIST_HEAD(&roc->dependents);
2214
2215         /* if there's one pending or we're scanning, queue this one */
2216         if (!list_empty(&local->roc_list) || local->scanning)
2217                 goto out_check_combine;
2218
2219         /* if not HW assist, just queue & schedule work */
2220         if (!local->ops->remain_on_channel) {
2221                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2222                 goto out_queue;
2223         }
2224
2225         /* otherwise actually kick it off here (for error handling) */
2226
2227         /*
2228          * If the duration is zero, then the driver
2229          * wouldn't actually do anything. Set it to
2230          * 10 for now.
2231          *
2232          * TODO: cancel the off-channel operation
2233          *       when we get the SKB's TX status and
2234          *       the wait time was zero before.
2235          */
2236         if (!duration)
2237                 duration = 10;
2238
2239         ret = drv_remain_on_channel(local, channel, channel_type, duration);
2240         if (ret) {
2241                 kfree(roc);
2242                 return ret;
2243         }
2244
2245         roc->started = true;
2246         goto out_queue;
2247
2248  out_check_combine:
2249         list_for_each_entry(tmp, &local->roc_list, list) {
2250                 if (tmp->chan != channel || tmp->chan_type != channel_type)
2251                         continue;
2252
2253                 /*
2254                  * Extend this ROC if possible:
2255                  *
2256                  * If it hasn't started yet, just increase the duration
2257                  * and add the new one to the list of dependents.
2258                  */
2259                 if (!tmp->started) {
2260                         list_add_tail(&roc->list, &tmp->dependents);
2261                         tmp->duration = max(tmp->duration, roc->duration);
2262                         queued = true;
2263                         break;
2264                 }
2265
2266                 /* If it has already started, it's more difficult ... */
2267                 if (local->ops->remain_on_channel) {
2268                         unsigned long j = jiffies;
2269
2270                         /*
2271                          * In the offloaded ROC case, if it hasn't begun, add
2272                          * this new one to the dependent list to be handled
2273                          * when the the master one begins. If it has begun,
2274                          * check that there's still a minimum time left and
2275                          * if so, start this one, transmitting the frame, but
2276                          * add it to the list directly after this one with a
2277                          * a reduced time so we'll ask the driver to execute
2278                          * it right after finishing the previous one, in the
2279                          * hope that it'll also be executed right afterwards,
2280                          * effectively extending the old one.
2281                          * If there's no minimum time left, just add it to the
2282                          * normal list.
2283                          */
2284                         if (!tmp->hw_begun) {
2285                                 list_add_tail(&roc->list, &tmp->dependents);
2286                                 queued = true;
2287                                 break;
2288                         }
2289
2290                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2291                                         tmp->hw_start_time +
2292                                         msecs_to_jiffies(tmp->duration))) {
2293                                 int new_dur;
2294
2295                                 ieee80211_handle_roc_started(roc);
2296
2297                                 new_dur = roc->duration -
2298                                           jiffies_to_msecs(tmp->hw_start_time +
2299                                                            msecs_to_jiffies(
2300                                                                 tmp->duration) -
2301                                                            j);
2302
2303                                 if (new_dur > 0) {
2304                                         /* add right after tmp */
2305                                         list_add(&roc->list, &tmp->list);
2306                                 } else {
2307                                         list_add_tail(&roc->list,
2308                                                       &tmp->dependents);
2309                                 }
2310                                 queued = true;
2311                         }
2312                 } else if (del_timer_sync(&tmp->work.timer)) {
2313                         unsigned long new_end;
2314
2315                         /*
2316                          * In the software ROC case, cancel the timer, if
2317                          * that fails then the finish work is already
2318                          * queued/pending and thus we queue the new ROC
2319                          * normally, if that succeeds then we can extend
2320                          * the timer duration and TX the frame (if any.)
2321                          */
2322
2323                         list_add_tail(&roc->list, &tmp->dependents);
2324                         queued = true;
2325
2326                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2327
2328                         /* ok, it was started & we canceled timer */
2329                         if (time_after(new_end, tmp->work.timer.expires))
2330                                 mod_timer(&tmp->work.timer, new_end);
2331                         else
2332                                 add_timer(&tmp->work.timer);
2333
2334                         ieee80211_handle_roc_started(roc);
2335                 }
2336                 break;
2337         }
2338
2339  out_queue:
2340         if (!queued)
2341                 list_add_tail(&roc->list, &local->roc_list);
2342
2343         /*
2344          * cookie is either the roc (for normal roc)
2345          * or the SKB (for mgmt TX)
2346          */
2347         if (txskb)
2348                 *cookie = (unsigned long)txskb;
2349         else
2350                 *cookie = (unsigned long)roc;
2351
2352         return 0;
2353 }
2354
2355 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2356                                        struct wireless_dev *wdev,
2357                                        struct ieee80211_channel *chan,
2358                                        enum nl80211_channel_type channel_type,
2359                                        unsigned int duration,
2360                                        u64 *cookie)
2361 {
2362         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2363         struct ieee80211_local *local = sdata->local;
2364         int ret;
2365
2366         mutex_lock(&local->mtx);
2367         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2368                                        duration, cookie, NULL);
2369         mutex_unlock(&local->mtx);
2370
2371         return ret;
2372 }
2373
2374 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2375                                 u64 cookie, bool mgmt_tx)
2376 {
2377         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2378         int ret;
2379
2380         mutex_lock(&local->mtx);
2381         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2382                 struct ieee80211_roc_work *dep, *tmp2;
2383
2384                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2385                         if (!mgmt_tx && (unsigned long)dep != cookie)
2386                                 continue;
2387                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2388                                 continue;
2389                         /* found dependent item -- just remove it */
2390                         list_del(&dep->list);
2391                         mutex_unlock(&local->mtx);
2392
2393                         ieee80211_roc_notify_destroy(dep);
2394                         return 0;
2395                 }
2396
2397                 if (!mgmt_tx && (unsigned long)roc != cookie)
2398                         continue;
2399                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2400                         continue;
2401
2402                 found = roc;
2403                 break;
2404         }
2405
2406         if (!found) {
2407                 mutex_unlock(&local->mtx);
2408                 return -ENOENT;
2409         }
2410
2411         /*
2412          * We found the item to cancel, so do that. Note that it
2413          * may have dependents, which we also cancel (and send
2414          * the expired signal for.) Not doing so would be quite
2415          * tricky here, but we may need to fix it later.
2416          */
2417
2418         if (local->ops->remain_on_channel) {
2419                 if (found->started) {
2420                         ret = drv_cancel_remain_on_channel(local);
2421                         if (WARN_ON_ONCE(ret)) {
2422                                 mutex_unlock(&local->mtx);
2423                                 return ret;
2424                         }
2425                 }
2426
2427                 list_del(&found->list);
2428
2429                 if (found->started)
2430                         ieee80211_start_next_roc(local);
2431                 mutex_unlock(&local->mtx);
2432
2433                 ieee80211_roc_notify_destroy(found);
2434         } else {
2435                 /* work may be pending so use it all the time */
2436                 found->abort = true;
2437                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2438
2439                 mutex_unlock(&local->mtx);
2440
2441                 /* work will clean up etc */
2442                 flush_delayed_work(&found->work);
2443         }
2444
2445         return 0;
2446 }
2447
2448 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2449                                               struct wireless_dev *wdev,
2450                                               u64 cookie)
2451 {
2452         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2453         struct ieee80211_local *local = sdata->local;
2454
2455         return ieee80211_cancel_roc(local, cookie, false);
2456 }
2457
2458 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2459                              struct ieee80211_channel *chan, bool offchan,
2460                              enum nl80211_channel_type channel_type,
2461                              bool channel_type_valid, unsigned int wait,
2462                              const u8 *buf, size_t len, bool no_cck,
2463                              bool dont_wait_for_ack, u64 *cookie)
2464 {
2465         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2466         struct ieee80211_local *local = sdata->local;
2467         struct sk_buff *skb;
2468         struct sta_info *sta;
2469         const struct ieee80211_mgmt *mgmt = (void *)buf;
2470         bool need_offchan = false;
2471         u32 flags;
2472         int ret;
2473
2474         if (dont_wait_for_ack)
2475                 flags = IEEE80211_TX_CTL_NO_ACK;
2476         else
2477                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2478                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2479
2480         if (no_cck)
2481                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2482
2483         switch (sdata->vif.type) {
2484         case NL80211_IFTYPE_ADHOC:
2485                 if (!sdata->vif.bss_conf.ibss_joined)
2486                         need_offchan = true;
2487                 /* fall through */
2488 #ifdef CONFIG_MAC80211_MESH
2489         case NL80211_IFTYPE_MESH_POINT:
2490                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2491                     !sdata->u.mesh.mesh_id_len)
2492                         need_offchan = true;
2493                 /* fall through */
2494 #endif
2495         case NL80211_IFTYPE_AP:
2496         case NL80211_IFTYPE_AP_VLAN:
2497         case NL80211_IFTYPE_P2P_GO:
2498                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2499                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2500                     !rcu_access_pointer(sdata->bss->beacon))
2501                         need_offchan = true;
2502                 if (!ieee80211_is_action(mgmt->frame_control) ||
2503                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2504                         break;
2505                 rcu_read_lock();
2506                 sta = sta_info_get(sdata, mgmt->da);
2507                 rcu_read_unlock();
2508                 if (!sta)
2509                         return -ENOLINK;
2510                 break;
2511         case NL80211_IFTYPE_STATION:
2512         case NL80211_IFTYPE_P2P_CLIENT:
2513                 if (!sdata->u.mgd.associated)
2514                         need_offchan = true;
2515                 break;
2516         case NL80211_IFTYPE_P2P_DEVICE:
2517                 need_offchan = true;
2518                 break;
2519         default:
2520                 return -EOPNOTSUPP;
2521         }
2522
2523         mutex_lock(&local->mtx);
2524
2525         /* Check if the operating channel is the requested channel */
2526         if (!need_offchan) {
2527                 struct ieee80211_chanctx_conf *chanctx_conf;
2528
2529                 rcu_read_lock();
2530                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2531
2532                 if (chanctx_conf) {
2533                         need_offchan = chan != chanctx_conf->channel;
2534                         if (channel_type_valid &&
2535                             channel_type != chanctx_conf->channel_type)
2536                                 need_offchan = true;
2537                 } else {
2538                         need_offchan = true;
2539                 }
2540                 rcu_read_unlock();
2541         }
2542
2543         if (need_offchan && !offchan) {
2544                 ret = -EBUSY;
2545                 goto out_unlock;
2546         }
2547
2548         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2549         if (!skb) {
2550                 ret = -ENOMEM;
2551                 goto out_unlock;
2552         }
2553         skb_reserve(skb, local->hw.extra_tx_headroom);
2554
2555         memcpy(skb_put(skb, len), buf, len);
2556
2557         IEEE80211_SKB_CB(skb)->flags = flags;
2558
2559         skb->dev = sdata->dev;
2560
2561         if (!need_offchan) {
2562                 *cookie = (unsigned long) skb;
2563                 ieee80211_tx_skb(sdata, skb);
2564                 ret = 0;
2565                 goto out_unlock;
2566         }
2567
2568         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2569         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2570                 IEEE80211_SKB_CB(skb)->hw_queue =
2571                         local->hw.offchannel_tx_hw_queue;
2572
2573         /* This will handle all kinds of coalescing and immediate TX */
2574         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2575                                        wait, cookie, skb);
2576         if (ret)
2577                 kfree_skb(skb);
2578  out_unlock:
2579         mutex_unlock(&local->mtx);
2580         return ret;
2581 }
2582
2583 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2584                                          struct wireless_dev *wdev,
2585                                          u64 cookie)
2586 {
2587         struct ieee80211_local *local = wiphy_priv(wiphy);
2588
2589         return ieee80211_cancel_roc(local, cookie, true);
2590 }
2591
2592 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2593                                           struct wireless_dev *wdev,
2594                                           u16 frame_type, bool reg)
2595 {
2596         struct ieee80211_local *local = wiphy_priv(wiphy);
2597         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2598
2599         switch (frame_type) {
2600         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2601                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2602                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2603
2604                         if (reg)
2605                                 ifibss->auth_frame_registrations++;
2606                         else
2607                                 ifibss->auth_frame_registrations--;
2608                 }
2609                 break;
2610         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2611                 if (reg)
2612                         local->probe_req_reg++;
2613                 else
2614                         local->probe_req_reg--;
2615
2616                 if (!local->open_count)
2617                         break;
2618
2619                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2620                 break;
2621         default:
2622                 break;
2623         }
2624 }
2625
2626 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2627 {
2628         struct ieee80211_local *local = wiphy_priv(wiphy);
2629
2630         if (local->started)
2631                 return -EOPNOTSUPP;
2632
2633         return drv_set_antenna(local, tx_ant, rx_ant);
2634 }
2635
2636 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2637 {
2638         struct ieee80211_local *local = wiphy_priv(wiphy);
2639
2640         return drv_get_antenna(local, tx_ant, rx_ant);
2641 }
2642
2643 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2644 {
2645         struct ieee80211_local *local = wiphy_priv(wiphy);
2646
2647         return drv_set_ringparam(local, tx, rx);
2648 }
2649
2650 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2651                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2652 {
2653         struct ieee80211_local *local = wiphy_priv(wiphy);
2654
2655         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2656 }
2657
2658 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2659                                     struct net_device *dev,
2660                                     struct cfg80211_gtk_rekey_data *data)
2661 {
2662         struct ieee80211_local *local = wiphy_priv(wiphy);
2663         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2664
2665         if (!local->ops->set_rekey_data)
2666                 return -EOPNOTSUPP;
2667
2668         drv_set_rekey_data(local, sdata, data);
2669
2670         return 0;
2671 }
2672
2673 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2674 {
2675         u8 *pos = (void *)skb_put(skb, 7);
2676
2677         *pos++ = WLAN_EID_EXT_CAPABILITY;
2678         *pos++ = 5; /* len */
2679         *pos++ = 0x0;
2680         *pos++ = 0x0;
2681         *pos++ = 0x0;
2682         *pos++ = 0x0;
2683         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2684 }
2685
2686 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2687 {
2688         struct ieee80211_local *local = sdata->local;
2689         u16 capab;
2690
2691         capab = 0;
2692         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2693                 return capab;
2694
2695         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2696                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2697         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2698                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2699
2700         return capab;
2701 }
2702
2703 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2704                                        u8 *peer, u8 *bssid)
2705 {
2706         struct ieee80211_tdls_lnkie *lnkid;
2707
2708         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2709
2710         lnkid->ie_type = WLAN_EID_LINK_ID;
2711         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2712
2713         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2714         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2715         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2716 }
2717
2718 static int
2719 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2720                                u8 *peer, u8 action_code, u8 dialog_token,
2721                                u16 status_code, struct sk_buff *skb)
2722 {
2723         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2724         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2725         struct ieee80211_tdls_data *tf;
2726
2727         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2728
2729         memcpy(tf->da, peer, ETH_ALEN);
2730         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2731         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2732         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2733
2734         switch (action_code) {
2735         case WLAN_TDLS_SETUP_REQUEST:
2736                 tf->category = WLAN_CATEGORY_TDLS;
2737                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2738
2739                 skb_put(skb, sizeof(tf->u.setup_req));
2740                 tf->u.setup_req.dialog_token = dialog_token;
2741                 tf->u.setup_req.capability =
2742                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2743
2744                 ieee80211_add_srates_ie(sdata, skb, false, band);
2745                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2746                 ieee80211_tdls_add_ext_capab(skb);
2747                 break;
2748         case WLAN_TDLS_SETUP_RESPONSE:
2749                 tf->category = WLAN_CATEGORY_TDLS;
2750                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2751
2752                 skb_put(skb, sizeof(tf->u.setup_resp));
2753                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2754                 tf->u.setup_resp.dialog_token = dialog_token;
2755                 tf->u.setup_resp.capability =
2756                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2757
2758                 ieee80211_add_srates_ie(sdata, skb, false, band);
2759                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2760                 ieee80211_tdls_add_ext_capab(skb);
2761                 break;
2762         case WLAN_TDLS_SETUP_CONFIRM:
2763                 tf->category = WLAN_CATEGORY_TDLS;
2764                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2765
2766                 skb_put(skb, sizeof(tf->u.setup_cfm));
2767                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2768                 tf->u.setup_cfm.dialog_token = dialog_token;
2769                 break;
2770         case WLAN_TDLS_TEARDOWN:
2771                 tf->category = WLAN_CATEGORY_TDLS;
2772                 tf->action_code = WLAN_TDLS_TEARDOWN;
2773
2774                 skb_put(skb, sizeof(tf->u.teardown));
2775                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2776                 break;
2777         case WLAN_TDLS_DISCOVERY_REQUEST:
2778                 tf->category = WLAN_CATEGORY_TDLS;
2779                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2780
2781                 skb_put(skb, sizeof(tf->u.discover_req));
2782                 tf->u.discover_req.dialog_token = dialog_token;
2783                 break;
2784         default:
2785                 return -EINVAL;
2786         }
2787
2788         return 0;
2789 }
2790
2791 static int
2792 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2793                            u8 *peer, u8 action_code, u8 dialog_token,
2794                            u16 status_code, struct sk_buff *skb)
2795 {
2796         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2797         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2798         struct ieee80211_mgmt *mgmt;
2799
2800         mgmt = (void *)skb_put(skb, 24);
2801         memset(mgmt, 0, 24);
2802         memcpy(mgmt->da, peer, ETH_ALEN);
2803         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2804         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2805
2806         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2807                                           IEEE80211_STYPE_ACTION);
2808
2809         switch (action_code) {
2810         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2811                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2812                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2813                 mgmt->u.action.u.tdls_discover_resp.action_code =
2814                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2815                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2816                         dialog_token;
2817                 mgmt->u.action.u.tdls_discover_resp.capability =
2818                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2819
2820                 ieee80211_add_srates_ie(sdata, skb, false, band);
2821                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2822                 ieee80211_tdls_add_ext_capab(skb);
2823                 break;
2824         default:
2825                 return -EINVAL;
2826         }
2827
2828         return 0;
2829 }
2830
2831 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2832                                u8 *peer, u8 action_code, u8 dialog_token,
2833                                u16 status_code, const u8 *extra_ies,
2834                                size_t extra_ies_len)
2835 {
2836         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2837         struct ieee80211_local *local = sdata->local;
2838         struct sk_buff *skb = NULL;
2839         bool send_direct;
2840         int ret;
2841
2842         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2843                 return -ENOTSUPP;
2844
2845         /* make sure we are in managed mode, and associated */
2846         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2847             !sdata->u.mgd.associated)
2848                 return -EINVAL;
2849
2850         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2851                  action_code, peer);
2852
2853         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2854                             max(sizeof(struct ieee80211_mgmt),
2855                                 sizeof(struct ieee80211_tdls_data)) +
2856                             50 + /* supported rates */
2857                             7 + /* ext capab */
2858                             extra_ies_len +
2859                             sizeof(struct ieee80211_tdls_lnkie));
2860         if (!skb)
2861                 return -ENOMEM;
2862
2863         skb_reserve(skb, local->hw.extra_tx_headroom);
2864
2865         switch (action_code) {
2866         case WLAN_TDLS_SETUP_REQUEST:
2867         case WLAN_TDLS_SETUP_RESPONSE:
2868         case WLAN_TDLS_SETUP_CONFIRM:
2869         case WLAN_TDLS_TEARDOWN:
2870         case WLAN_TDLS_DISCOVERY_REQUEST:
2871                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2872                                                      action_code, dialog_token,
2873                                                      status_code, skb);
2874                 send_direct = false;
2875                 break;
2876         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2877                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2878                                                  dialog_token, status_code,
2879                                                  skb);
2880                 send_direct = true;
2881                 break;
2882         default:
2883                 ret = -ENOTSUPP;
2884                 break;
2885         }
2886
2887         if (ret < 0)
2888                 goto fail;
2889
2890         if (extra_ies_len)
2891                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2892
2893         /* the TDLS link IE is always added last */
2894         switch (action_code) {
2895         case WLAN_TDLS_SETUP_REQUEST:
2896         case WLAN_TDLS_SETUP_CONFIRM:
2897         case WLAN_TDLS_TEARDOWN:
2898         case WLAN_TDLS_DISCOVERY_REQUEST:
2899                 /* we are the initiator */
2900                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2901                                            sdata->u.mgd.bssid);
2902                 break;
2903         case WLAN_TDLS_SETUP_RESPONSE:
2904         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2905                 /* we are the responder */
2906                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2907                                            sdata->u.mgd.bssid);
2908                 break;
2909         default:
2910                 ret = -ENOTSUPP;
2911                 goto fail;
2912         }
2913
2914         if (send_direct) {
2915                 ieee80211_tx_skb(sdata, skb);
2916                 return 0;
2917         }
2918
2919         /*
2920          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2921          * we should default to AC_VI.
2922          */
2923         switch (action_code) {
2924         case WLAN_TDLS_SETUP_REQUEST:
2925         case WLAN_TDLS_SETUP_RESPONSE:
2926                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2927                 skb->priority = 2;
2928                 break;
2929         default:
2930                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2931                 skb->priority = 5;
2932                 break;
2933         }
2934
2935         /* disable bottom halves when entering the Tx path */
2936         local_bh_disable();
2937         ret = ieee80211_subif_start_xmit(skb, dev);
2938         local_bh_enable();
2939
2940         return ret;
2941
2942 fail:
2943         dev_kfree_skb(skb);
2944         return ret;
2945 }
2946
2947 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2948                                u8 *peer, enum nl80211_tdls_operation oper)
2949 {
2950         struct sta_info *sta;
2951         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2952
2953         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2954                 return -ENOTSUPP;
2955
2956         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2957                 return -EINVAL;
2958
2959         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2960
2961         switch (oper) {
2962         case NL80211_TDLS_ENABLE_LINK:
2963                 rcu_read_lock();
2964                 sta = sta_info_get(sdata, peer);
2965                 if (!sta) {
2966                         rcu_read_unlock();
2967                         return -ENOLINK;
2968                 }
2969
2970                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2971                 rcu_read_unlock();
2972                 break;
2973         case NL80211_TDLS_DISABLE_LINK:
2974                 return sta_info_destroy_addr(sdata, peer);
2975         case NL80211_TDLS_TEARDOWN:
2976         case NL80211_TDLS_SETUP:
2977         case NL80211_TDLS_DISCOVERY_REQ:
2978                 /* We don't support in-driver setup/teardown/discovery */
2979                 return -ENOTSUPP;
2980         default:
2981                 return -ENOTSUPP;
2982         }
2983
2984         return 0;
2985 }
2986
2987 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2988                                   const u8 *peer, u64 *cookie)
2989 {
2990         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2991         struct ieee80211_local *local = sdata->local;
2992         struct ieee80211_qos_hdr *nullfunc;
2993         struct sk_buff *skb;
2994         int size = sizeof(*nullfunc);
2995         __le16 fc;
2996         bool qos;
2997         struct ieee80211_tx_info *info;
2998         struct sta_info *sta;
2999         struct ieee80211_chanctx_conf *chanctx_conf;
3000         enum ieee80211_band band;
3001
3002         rcu_read_lock();
3003         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3004         if (WARN_ON(!chanctx_conf)) {
3005                 rcu_read_unlock();
3006                 return -EINVAL;
3007         }
3008         band = chanctx_conf->channel->band;
3009         sta = sta_info_get(sdata, peer);
3010         if (sta) {
3011                 qos = test_sta_flag(sta, WLAN_STA_WME);
3012         } else {
3013                 rcu_read_unlock();
3014                 return -ENOLINK;
3015         }
3016
3017         if (qos) {
3018                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3019                                  IEEE80211_STYPE_QOS_NULLFUNC |
3020                                  IEEE80211_FCTL_FROMDS);
3021         } else {
3022                 size -= 2;
3023                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3024                                  IEEE80211_STYPE_NULLFUNC |
3025                                  IEEE80211_FCTL_FROMDS);
3026         }
3027
3028         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3029         if (!skb) {
3030                 rcu_read_unlock();
3031                 return -ENOMEM;
3032         }
3033
3034         skb->dev = dev;
3035
3036         skb_reserve(skb, local->hw.extra_tx_headroom);
3037
3038         nullfunc = (void *) skb_put(skb, size);
3039         nullfunc->frame_control = fc;
3040         nullfunc->duration_id = 0;
3041         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3042         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3043         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3044         nullfunc->seq_ctrl = 0;
3045
3046         info = IEEE80211_SKB_CB(skb);
3047
3048         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3049                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3050
3051         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3052         skb->priority = 7;
3053         if (qos)
3054                 nullfunc->qos_ctrl = cpu_to_le16(7);
3055
3056         local_bh_disable();
3057         ieee80211_xmit(sdata, skb, band);
3058         local_bh_enable();
3059         rcu_read_unlock();
3060
3061         *cookie = (unsigned long) skb;
3062         return 0;
3063 }
3064
3065 static struct ieee80211_channel *
3066 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
3067                           enum nl80211_channel_type *type)
3068 {
3069         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3070         struct ieee80211_chanctx_conf *chanctx_conf;
3071         struct ieee80211_channel *chan = NULL;
3072
3073         rcu_read_lock();
3074         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3075         if (chanctx_conf) {
3076                 *type = chanctx_conf->channel_type;
3077                 chan = chanctx_conf->channel;
3078         }
3079         rcu_read_unlock();
3080
3081         return chan;
3082 }
3083
3084 #ifdef CONFIG_PM
3085 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3086 {
3087         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3088 }
3089 #endif
3090
3091 struct cfg80211_ops mac80211_config_ops = {
3092         .add_virtual_intf = ieee80211_add_iface,
3093         .del_virtual_intf = ieee80211_del_iface,
3094         .change_virtual_intf = ieee80211_change_iface,
3095         .start_p2p_device = ieee80211_start_p2p_device,
3096         .stop_p2p_device = ieee80211_stop_p2p_device,
3097         .add_key = ieee80211_add_key,
3098         .del_key = ieee80211_del_key,
3099         .get_key = ieee80211_get_key,
3100         .set_default_key = ieee80211_config_default_key,
3101         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3102         .start_ap = ieee80211_start_ap,
3103         .change_beacon = ieee80211_change_beacon,
3104         .stop_ap = ieee80211_stop_ap,
3105         .add_station = ieee80211_add_station,
3106         .del_station = ieee80211_del_station,
3107         .change_station = ieee80211_change_station,
3108         .get_station = ieee80211_get_station,
3109         .dump_station = ieee80211_dump_station,
3110         .dump_survey = ieee80211_dump_survey,
3111 #ifdef CONFIG_MAC80211_MESH
3112         .add_mpath = ieee80211_add_mpath,
3113         .del_mpath = ieee80211_del_mpath,
3114         .change_mpath = ieee80211_change_mpath,
3115         .get_mpath = ieee80211_get_mpath,
3116         .dump_mpath = ieee80211_dump_mpath,
3117         .update_mesh_config = ieee80211_update_mesh_config,
3118         .get_mesh_config = ieee80211_get_mesh_config,
3119         .join_mesh = ieee80211_join_mesh,
3120         .leave_mesh = ieee80211_leave_mesh,
3121 #endif
3122         .change_bss = ieee80211_change_bss,
3123         .set_txq_params = ieee80211_set_txq_params,
3124         .set_monitor_channel = ieee80211_set_monitor_channel,
3125         .suspend = ieee80211_suspend,
3126         .resume = ieee80211_resume,
3127         .scan = ieee80211_scan,
3128         .sched_scan_start = ieee80211_sched_scan_start,
3129         .sched_scan_stop = ieee80211_sched_scan_stop,
3130         .auth = ieee80211_auth,
3131         .assoc = ieee80211_assoc,
3132         .deauth = ieee80211_deauth,
3133         .disassoc = ieee80211_disassoc,
3134         .join_ibss = ieee80211_join_ibss,
3135         .leave_ibss = ieee80211_leave_ibss,
3136         .set_wiphy_params = ieee80211_set_wiphy_params,
3137         .set_tx_power = ieee80211_set_tx_power,
3138         .get_tx_power = ieee80211_get_tx_power,
3139         .set_wds_peer = ieee80211_set_wds_peer,
3140         .rfkill_poll = ieee80211_rfkill_poll,
3141         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3142         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3143         .set_power_mgmt = ieee80211_set_power_mgmt,
3144         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3145         .remain_on_channel = ieee80211_remain_on_channel,
3146         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3147         .mgmt_tx = ieee80211_mgmt_tx,
3148         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3149         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3150         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3151         .set_antenna = ieee80211_set_antenna,
3152         .get_antenna = ieee80211_get_antenna,
3153         .set_ringparam = ieee80211_set_ringparam,
3154         .get_ringparam = ieee80211_get_ringparam,
3155         .set_rekey_data = ieee80211_set_rekey_data,
3156         .tdls_oper = ieee80211_tdls_oper,
3157         .tdls_mgmt = ieee80211_tdls_mgmt,
3158         .probe_client = ieee80211_probe_client,
3159         .set_noack_map = ieee80211_set_noack_map,
3160 #ifdef CONFIG_PM
3161         .set_wakeup = ieee80211_set_wakeup,
3162 #endif
3163         .get_et_sset_count = ieee80211_get_et_sset_count,
3164         .get_et_stats = ieee80211_get_et_stats,
3165         .get_et_strings = ieee80211_get_et_strings,
3166         .get_channel = ieee80211_cfg_get_channel,
3167 };