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->def.chan;
 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 cfg80211_chan_def *chandef)
 739 {
 740         struct ieee80211_local *local = wiphy_priv(wiphy);
 741         struct ieee80211_sub_if_data *sdata;
 742         int ret = 0;
 743
 744         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 745                 return 0;
 746
 747         mutex_lock(&local->iflist_mtx);
 748         if (local->use_chanctx) {
 749                 sdata = rcu_dereference_protected(
 750                                 local->monitor_sdata,
 751                                 lockdep_is_held(&local->iflist_mtx));
 752                 if (sdata) {
 753                         ieee80211_vif_release_channel(sdata);
 754                         ret = ieee80211_vif_use_channel(sdata, chandef,
 755                                         IEEE80211_CHANCTX_EXCLUSIVE);
 756                 }
 757         } else if (local->open_count == local->monitors) {
 758                 local->_oper_channel = chandef->chan;
 759                 local->_oper_channel_type = cfg80211_get_chandef_type(chandef);
 760                 ieee80211_hw_config(local, 0);
 761         }
 762
 763         if (ret == 0)
 764                 local->monitor_chandef = *chandef;
 765         mutex_unlock(&local->iflist_mtx);
 766
 767         return ret;
 768 }
 769
 770 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 771                                     const u8 *resp, size_t resp_len)
 772 {
 773         struct probe_resp *new, *old;
 774
 775         if (!resp || !resp_len)
 776                 return 1;
 777
 778         old = rtnl_dereference(sdata->u.ap.probe_resp);
 779
 780         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 781         if (!new)
 782                 return -ENOMEM;
 783
 784         new->len = resp_len;
 785         memcpy(new->data, resp, resp_len);
 786
 787         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 788         if (old)
 789                 kfree_rcu(old, rcu_head);
 790
 791         return 0;
 792 }
 793
 794 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 795                                    struct cfg80211_beacon_data *params)
 796 {
 797         struct beacon_data *new, *old;
 798         int new_head_len, new_tail_len;
 799         int size, err;
 800         u32 changed = BSS_CHANGED_BEACON;
 801
 802         old = rtnl_dereference(sdata->u.ap.beacon);
 803
 804         /* Need to have a beacon head if we don't have one yet */
 805         if (!params->head && !old)
 806                 return -EINVAL;
 807
 808         /* new or old head? */
 809         if (params->head)
 810                 new_head_len = params->head_len;
 811         else
 812                 new_head_len = old->head_len;
 813
 814         /* new or old tail? */
 815         if (params->tail || !old)
 816                 /* params->tail_len will be zero for !params->tail */
 817                 new_tail_len = params->tail_len;
 818         else
 819                 new_tail_len = old->tail_len;
 820
 821         size = sizeof(*new) + new_head_len + new_tail_len;
 822
 823         new = kzalloc(size, GFP_KERNEL);
 824         if (!new)
 825                 return -ENOMEM;
 826
 827         /* start filling the new info now */
 828
 829         /*
 830          * pointers go into the block we allocated,
 831          * memory is | beacon_data | head | tail |
 832          */
 833         new->head = ((u8 *) new) + sizeof(*new);
 834         new->tail = new->head + new_head_len;
 835         new->head_len = new_head_len;
 836         new->tail_len = new_tail_len;
 837
 838         /* copy in head */
 839         if (params->head)
 840                 memcpy(new->head, params->head, new_head_len);
 841         else
 842                 memcpy(new->head, old->head, new_head_len);
 843
 844         /* copy in optional tail */
 845         if (params->tail)
 846                 memcpy(new->tail, params->tail, new_tail_len);
 847         else
 848                 if (old)
 849                         memcpy(new->tail, old->tail, new_tail_len);
 850
 851         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 852                                        params->probe_resp_len);
 853         if (err < 0)
 854                 return err;
 855         if (err == 0)
 856                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 857
 858         rcu_assign_pointer(sdata->u.ap.beacon, new);
 859
 860         if (old)
 861                 kfree_rcu(old, rcu_head);
 862
 863         return changed;
 864 }
 865
 866 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 867                               struct cfg80211_ap_settings *params)
 868 {
 869         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 870         struct beacon_data *old;
 871         struct ieee80211_sub_if_data *vlan;
 872         u32 changed = BSS_CHANGED_BEACON_INT |
 873                       BSS_CHANGED_BEACON_ENABLED |
 874                       BSS_CHANGED_BEACON |
 875                       BSS_CHANGED_SSID;
 876         int err;
 877
 878         old = rtnl_dereference(sdata->u.ap.beacon);
 879         if (old)
 880                 return -EALREADY;
 881
 882         /* TODO: make hostapd tell us what it wants */
 883         sdata->smps_mode = IEEE80211_SMPS_OFF;
 884         sdata->needed_rx_chains = sdata->local->rx_chains;
 885
 886         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 887                                         IEEE80211_CHANCTX_SHARED);
 888         if (err)
 889                 return err;
 890
 891         /*
 892          * Apply control port protocol, this allows us to
 893          * not encrypt dynamic WEP control frames.
 894          */
 895         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 896         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 897         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 898                 vlan->control_port_protocol =
 899                         params->crypto.control_port_ethertype;
 900                 vlan->control_port_no_encrypt =
 901                         params->crypto.control_port_no_encrypt;
 902         }
 903
 904         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 905         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 906
 907         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 908         if (params->ssid_len)
 909                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 910                        params->ssid_len);
 911         sdata->vif.bss_conf.hidden_ssid =
 912                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 913
 914         err = ieee80211_assign_beacon(sdata, &params->beacon);
 915         if (err < 0)
 916                 return err;
 917         changed |= err;
 918
 919         err = drv_start_ap(sdata->local, sdata);
 920         if (err) {
 921                 old = rtnl_dereference(sdata->u.ap.beacon);
 922                 if (old)
 923                         kfree_rcu(old, rcu_head);
 924                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 925                 return err;
 926         }
 927
 928         ieee80211_bss_info_change_notify(sdata, changed);
 929
 930         netif_carrier_on(dev);
 931         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 932                 netif_carrier_on(vlan->dev);
 933
 934         return 0;
 935 }
 936
 937 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 938                                    struct cfg80211_beacon_data *params)
 939 {
 940         struct ieee80211_sub_if_data *sdata;
 941         struct beacon_data *old;
 942         int err;
 943
 944         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 945
 946         old = rtnl_dereference(sdata->u.ap.beacon);
 947         if (!old)
 948                 return -ENOENT;
 949
 950         err = ieee80211_assign_beacon(sdata, params);
 951         if (err < 0)
 952                 return err;
 953         ieee80211_bss_info_change_notify(sdata, err);
 954         return 0;
 955 }
 956
 957 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 958 {
 959         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 960         struct ieee80211_sub_if_data *vlan;
 961         struct ieee80211_local *local = sdata->local;
 962         struct beacon_data *old_beacon;
 963         struct probe_resp *old_probe_resp;
 964
 965         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
 966         if (!old_beacon)
 967                 return -ENOENT;
 968         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
 969
 970         /* turn off carrier for this interface and dependent VLANs */
 971         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 972                 netif_carrier_off(vlan->dev);
 973         netif_carrier_off(dev);
 974
 975         /* remove beacon and probe response */
 976         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 977         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 978         kfree_rcu(old_beacon, rcu_head);
 979         if (old_probe_resp)
 980                 kfree_rcu(old_probe_resp, rcu_head);
 981
 982         sta_info_flush(local, sdata);
 983         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 984
 985         drv_stop_ap(sdata->local, sdata);
 986
 987         /* free all potentially still buffered bcast frames */
 988         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 989         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 990
 991         ieee80211_vif_release_channel(sdata);
 992
 993         return 0;
 994 }
 995
 996 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 997 struct iapp_layer2_update {
 998         u8 da[ETH_ALEN];        /* broadcast */
 999         u8 sa[ETH_ALEN];        /* STA addr */
1000         __be16 len;             /* 6 */
1001         u8 dsap;                /* 0 */
1002         u8 ssap;                /* 0 */
1003         u8 control;
1004         u8 xid_info[3];
1005 } __packed;
1006
1007 static void ieee80211_send_layer2_update(struct sta_info *sta)
1008 {
1009         struct iapp_layer2_update *msg;
1010         struct sk_buff *skb;
1011
1012         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1013          * bridge devices */
1014
1015         skb = dev_alloc_skb(sizeof(*msg));
1016         if (!skb)
1017                 return;
1018         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1019
1020         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1021          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1022
1023         eth_broadcast_addr(msg->da);
1024         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1025         msg->len = htons(6);
1026         msg->dsap = 0;
1027         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1028         msg->control = 0xaf;    /* XID response lsb.1111F101.
1029                                  * F=0 (no poll command; unsolicited frame) */
1030         msg->xid_info[0] = 0x81;        /* XID format identifier */
1031         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1032         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1033
1034         skb->dev = sta->sdata->dev;
1035         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1036         memset(skb->cb, 0, sizeof(skb->cb));
1037         netif_rx_ni(skb);
1038 }
1039
1040 static int sta_apply_parameters(struct ieee80211_local *local,
1041                                 struct sta_info *sta,
1042                                 struct station_parameters *params)
1043 {
1044         int ret = 0;
1045         u32 rates;
1046         int i, j;
1047         struct ieee80211_supported_band *sband;
1048         struct ieee80211_sub_if_data *sdata = sta->sdata;
1049         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1050         u32 mask, set;
1051
1052         sband = local->hw.wiphy->bands[band];
1053
1054         mask = params->sta_flags_mask;
1055         set = params->sta_flags_set;
1056
1057         /*
1058          * In mesh mode, we can clear AUTHENTICATED flag but must
1059          * also make ASSOCIATED follow appropriately for the driver
1060          * API. See also below, after AUTHORIZED changes.
1061          */
1062         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1063                 /* cfg80211 should not allow this in non-mesh modes */
1064                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1065                         return -EINVAL;
1066
1067                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1068                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1069                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1070                         if (ret)
1071                                 return ret;
1072                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1073                         if (ret)
1074                                 return ret;
1075                 }
1076         }
1077
1078         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1079                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1080                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1081                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1082                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1083                 if (ret)
1084                         return ret;
1085         }
1086
1087         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1088                 /* cfg80211 should not allow this in non-mesh modes */
1089                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1090                         return -EINVAL;
1091
1092                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1093                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1094                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1095                         if (ret)
1096                                 return ret;
1097                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1098                         if (ret)
1099                                 return ret;
1100                 }
1101         }
1102
1103
1104         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1105                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1106                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1107                 else
1108                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1109         }
1110
1111         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1112                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1113                         set_sta_flag(sta, WLAN_STA_WME);
1114                         sta->sta.wme = true;
1115                 } else {
1116                         clear_sta_flag(sta, WLAN_STA_WME);
1117                         sta->sta.wme = false;
1118                 }
1119         }
1120
1121         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1122                 if (set & BIT(NL80211_STA_FLAG_MFP))
1123                         set_sta_flag(sta, WLAN_STA_MFP);
1124                 else
1125                         clear_sta_flag(sta, WLAN_STA_MFP);
1126         }
1127
1128         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1129                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1130                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1131                 else
1132                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1133         }
1134
1135         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1136                 sta->sta.uapsd_queues = params->uapsd_queues;
1137                 sta->sta.max_sp = params->max_sp;
1138         }
1139
1140         /*
1141          * cfg80211 validates this (1-2007) and allows setting the AID
1142          * only when creating a new station entry
1143          */
1144         if (params->aid)
1145                 sta->sta.aid = params->aid;
1146
1147         /*
1148          * FIXME: updating the following information is racy when this
1149          *        function is called from ieee80211_change_station().
1150          *        However, all this information should be static so
1151          *        maybe we should just reject attemps to change it.
1152          */
1153
1154         if (params->listen_interval >= 0)
1155                 sta->listen_interval = params->listen_interval;
1156
1157         if (params->supported_rates) {
1158                 rates = 0;
1159
1160                 for (i = 0; i < params->supported_rates_len; i++) {
1161                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1162                         for (j = 0; j < sband->n_bitrates; j++) {
1163                                 if (sband->bitrates[j].bitrate == rate)
1164                                         rates |= BIT(j);
1165                         }
1166                 }
1167                 sta->sta.supp_rates[band] = rates;
1168         }
1169
1170         if (params->ht_capa)
1171                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1172                                                   params->ht_capa,
1173                                                   &sta->sta.ht_cap);
1174
1175         if (params->vht_capa)
1176                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1177                                                     params->vht_capa,
1178                                                     &sta->sta.vht_cap);
1179
1180         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1181 #ifdef CONFIG_MAC80211_MESH
1182                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1183                         switch (params->plink_state) {
1184                         case NL80211_PLINK_LISTEN:
1185                         case NL80211_PLINK_ESTAB:
1186                         case NL80211_PLINK_BLOCKED:
1187                                 sta->plink_state = params->plink_state;
1188                                 break;
1189                         default:
1190                                 /*  nothing  */
1191                                 break;
1192                         }
1193                 else
1194                         switch (params->plink_action) {
1195                         case PLINK_ACTION_OPEN:
1196                                 mesh_plink_open(sta);
1197                                 break;
1198                         case PLINK_ACTION_BLOCK:
1199                                 mesh_plink_block(sta);
1200                                 break;
1201                         }
1202 #endif
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1209                                  u8 *mac, struct station_parameters *params)
1210 {
1211         struct ieee80211_local *local = wiphy_priv(wiphy);
1212         struct sta_info *sta;
1213         struct ieee80211_sub_if_data *sdata;
1214         int err;
1215         int layer2_update;
1216
1217         if (params->vlan) {
1218                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1219
1220                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1221                     sdata->vif.type != NL80211_IFTYPE_AP)
1222                         return -EINVAL;
1223         } else
1224                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1225
1226         if (ether_addr_equal(mac, sdata->vif.addr))
1227                 return -EINVAL;
1228
1229         if (is_multicast_ether_addr(mac))
1230                 return -EINVAL;
1231
1232         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1233         if (!sta)
1234                 return -ENOMEM;
1235
1236         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1237         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1238
1239         err = sta_apply_parameters(local, sta, params);
1240         if (err) {
1241                 sta_info_free(local, sta);
1242                 return err;
1243         }
1244
1245         /*
1246          * for TDLS, rate control should be initialized only when supported
1247          * rates are known.
1248          */
1249         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1250                 rate_control_rate_init(sta);
1251
1252         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1253                 sdata->vif.type == NL80211_IFTYPE_AP;
1254
1255         err = sta_info_insert_rcu(sta);
1256         if (err) {
1257                 rcu_read_unlock();
1258                 return err;
1259         }
1260
1261         if (layer2_update)
1262                 ieee80211_send_layer2_update(sta);
1263
1264         rcu_read_unlock();
1265
1266         return 0;
1267 }
1268
1269 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1270                                  u8 *mac)
1271 {
1272         struct ieee80211_local *local = wiphy_priv(wiphy);
1273         struct ieee80211_sub_if_data *sdata;
1274
1275         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1276
1277         if (mac)
1278                 return sta_info_destroy_addr_bss(sdata, mac);
1279
1280         sta_info_flush(local, sdata);
1281         return 0;
1282 }
1283
1284 static int ieee80211_change_station(struct wiphy *wiphy,
1285                                     struct net_device *dev,
1286                                     u8 *mac,
1287                                     struct station_parameters *params)
1288 {
1289         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1290         struct ieee80211_local *local = wiphy_priv(wiphy);
1291         struct sta_info *sta;
1292         struct ieee80211_sub_if_data *vlansdata;
1293         int err;
1294
1295         mutex_lock(&local->sta_mtx);
1296
1297         sta = sta_info_get_bss(sdata, mac);
1298         if (!sta) {
1299                 mutex_unlock(&local->sta_mtx);
1300                 return -ENOENT;
1301         }
1302
1303         /* in station mode, supported rates are only valid with TDLS */
1304         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1305             params->supported_rates &&
1306             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1307                 mutex_unlock(&local->sta_mtx);
1308                 return -EINVAL;
1309         }
1310
1311         if (params->vlan && params->vlan != sta->sdata->dev) {
1312                 bool prev_4addr = false;
1313                 bool new_4addr = false;
1314
1315                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1316
1317                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1318                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1319                         mutex_unlock(&local->sta_mtx);
1320                         return -EINVAL;
1321                 }
1322
1323                 if (params->vlan->ieee80211_ptr->use_4addr) {
1324                         if (vlansdata->u.vlan.sta) {
1325                                 mutex_unlock(&local->sta_mtx);
1326                                 return -EBUSY;
1327                         }
1328
1329                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1330                         new_4addr = true;
1331                 }
1332
1333                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1334                     sta->sdata->u.vlan.sta) {
1335                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1336                         prev_4addr = true;
1337                 }
1338
1339                 sta->sdata = vlansdata;
1340
1341                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1342                     prev_4addr != new_4addr) {
1343                         if (new_4addr)
1344                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1345                         else
1346                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1347                 }
1348
1349                 ieee80211_send_layer2_update(sta);
1350         }
1351
1352         err = sta_apply_parameters(local, sta, params);
1353         if (err) {
1354                 mutex_unlock(&local->sta_mtx);
1355                 return err;
1356         }
1357
1358         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1359                 rate_control_rate_init(sta);
1360
1361         mutex_unlock(&local->sta_mtx);
1362
1363         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1364             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1365                 ieee80211_recalc_ps(local, -1);
1366                 ieee80211_recalc_ps_vif(sdata);
1367         }
1368         return 0;
1369 }
1370
1371 #ifdef CONFIG_MAC80211_MESH
1372 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1373                                  u8 *dst, u8 *next_hop)
1374 {
1375         struct ieee80211_sub_if_data *sdata;
1376         struct mesh_path *mpath;
1377         struct sta_info *sta;
1378         int err;
1379
1380         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1381
1382         rcu_read_lock();
1383         sta = sta_info_get(sdata, next_hop);
1384         if (!sta) {
1385                 rcu_read_unlock();
1386                 return -ENOENT;
1387         }
1388
1389         err = mesh_path_add(dst, sdata);
1390         if (err) {
1391                 rcu_read_unlock();
1392                 return err;
1393         }
1394
1395         mpath = mesh_path_lookup(dst, sdata);
1396         if (!mpath) {
1397                 rcu_read_unlock();
1398                 return -ENXIO;
1399         }
1400         mesh_path_fix_nexthop(mpath, sta);
1401
1402         rcu_read_unlock();
1403         return 0;
1404 }
1405
1406 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1407                                  u8 *dst)
1408 {
1409         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1410
1411         if (dst)
1412                 return mesh_path_del(dst, sdata);
1413
1414         mesh_path_flush_by_iface(sdata);
1415         return 0;
1416 }
1417
1418 static int ieee80211_change_mpath(struct wiphy *wiphy,
1419                                     struct net_device *dev,
1420                                     u8 *dst, u8 *next_hop)
1421 {
1422         struct ieee80211_sub_if_data *sdata;
1423         struct mesh_path *mpath;
1424         struct sta_info *sta;
1425
1426         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1427
1428         rcu_read_lock();
1429
1430         sta = sta_info_get(sdata, next_hop);
1431         if (!sta) {
1432                 rcu_read_unlock();
1433                 return -ENOENT;
1434         }
1435
1436         mpath = mesh_path_lookup(dst, sdata);
1437         if (!mpath) {
1438                 rcu_read_unlock();
1439                 return -ENOENT;
1440         }
1441
1442         mesh_path_fix_nexthop(mpath, sta);
1443
1444         rcu_read_unlock();
1445         return 0;
1446 }
1447
1448 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1449                             struct mpath_info *pinfo)
1450 {
1451         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1452
1453         if (next_hop_sta)
1454                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1455         else
1456                 memset(next_hop, 0, ETH_ALEN);
1457
1458         memset(pinfo, 0, sizeof(*pinfo));
1459
1460         pinfo->generation = mesh_paths_generation;
1461
1462         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1463                         MPATH_INFO_SN |
1464                         MPATH_INFO_METRIC |
1465                         MPATH_INFO_EXPTIME |
1466                         MPATH_INFO_DISCOVERY_TIMEOUT |
1467                         MPATH_INFO_DISCOVERY_RETRIES |
1468                         MPATH_INFO_FLAGS;
1469
1470         pinfo->frame_qlen = mpath->frame_queue.qlen;
1471         pinfo->sn = mpath->sn;
1472         pinfo->metric = mpath->metric;
1473         if (time_before(jiffies, mpath->exp_time))
1474                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1475         pinfo->discovery_timeout =
1476                         jiffies_to_msecs(mpath->discovery_timeout);
1477         pinfo->discovery_retries = mpath->discovery_retries;
1478         if (mpath->flags & MESH_PATH_ACTIVE)
1479                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1480         if (mpath->flags & MESH_PATH_RESOLVING)
1481                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1482         if (mpath->flags & MESH_PATH_SN_VALID)
1483                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1484         if (mpath->flags & MESH_PATH_FIXED)
1485                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1486         if (mpath->flags & MESH_PATH_RESOLVED)
1487                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1488 }
1489
1490 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1491                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1492
1493 {
1494         struct ieee80211_sub_if_data *sdata;
1495         struct mesh_path *mpath;
1496
1497         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1498
1499         rcu_read_lock();
1500         mpath = mesh_path_lookup(dst, sdata);
1501         if (!mpath) {
1502                 rcu_read_unlock();
1503                 return -ENOENT;
1504         }
1505         memcpy(dst, mpath->dst, ETH_ALEN);
1506         mpath_set_pinfo(mpath, next_hop, pinfo);
1507         rcu_read_unlock();
1508         return 0;
1509 }
1510
1511 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1512                                  int idx, u8 *dst, u8 *next_hop,
1513                                  struct mpath_info *pinfo)
1514 {
1515         struct ieee80211_sub_if_data *sdata;
1516         struct mesh_path *mpath;
1517
1518         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1519
1520         rcu_read_lock();
1521         mpath = mesh_path_lookup_by_idx(idx, sdata);
1522         if (!mpath) {
1523                 rcu_read_unlock();
1524                 return -ENOENT;
1525         }
1526         memcpy(dst, mpath->dst, ETH_ALEN);
1527         mpath_set_pinfo(mpath, next_hop, pinfo);
1528         rcu_read_unlock();
1529         return 0;
1530 }
1531
1532 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1533                                 struct net_device *dev,
1534                                 struct mesh_config *conf)
1535 {
1536         struct ieee80211_sub_if_data *sdata;
1537         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1538
1539         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1540         return 0;
1541 }
1542
1543 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1544 {
1545         return (mask >> (parm-1)) & 0x1;
1546 }
1547
1548 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1549                 const struct mesh_setup *setup)
1550 {
1551         u8 *new_ie;
1552         const u8 *old_ie;
1553         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1554                                         struct ieee80211_sub_if_data, u.mesh);
1555
1556         /* allocate information elements */
1557         new_ie = NULL;
1558         old_ie = ifmsh->ie;
1559
1560         if (setup->ie_len) {
1561                 new_ie = kmemdup(setup->ie, setup->ie_len,
1562                                 GFP_KERNEL);
1563                 if (!new_ie)
1564                         return -ENOMEM;
1565         }
1566         ifmsh->ie_len = setup->ie_len;
1567         ifmsh->ie = new_ie;
1568         kfree(old_ie);
1569
1570         /* now copy the rest of the setup parameters */
1571         ifmsh->mesh_id_len = setup->mesh_id_len;
1572         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1573         ifmsh->mesh_sp_id = setup->sync_method;
1574         ifmsh->mesh_pp_id = setup->path_sel_proto;
1575         ifmsh->mesh_pm_id = setup->path_metric;
1576         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1577         if (setup->is_authenticated)
1578                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1579         if (setup->is_secure)
1580                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1581
1582         /* mcast rate setting in Mesh Node */
1583         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1584                                                 sizeof(setup->mcast_rate));
1585
1586         return 0;
1587 }
1588
1589 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1590                                         struct net_device *dev, u32 mask,
1591                                         const struct mesh_config *nconf)
1592 {
1593         struct mesh_config *conf;
1594         struct ieee80211_sub_if_data *sdata;
1595         struct ieee80211_if_mesh *ifmsh;
1596
1597         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1598         ifmsh = &sdata->u.mesh;
1599
1600         /* Set the config options which we are interested in setting */
1601         conf = &(sdata->u.mesh.mshcfg);
1602         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1603                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1604         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1605                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1606         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1607                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1608         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1609                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1610         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1611                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1612         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1613                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1614         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1615                 conf->element_ttl = nconf->element_ttl;
1616         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1617                 conf->auto_open_plinks = nconf->auto_open_plinks;
1618         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1619                 conf->dot11MeshNbrOffsetMaxNeighbor =
1620                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1621         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1622                 conf->dot11MeshHWMPmaxPREQretries =
1623                         nconf->dot11MeshHWMPmaxPREQretries;
1624         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1625                 conf->path_refresh_time = nconf->path_refresh_time;
1626         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1627                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1628         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1629                 conf->dot11MeshHWMPactivePathTimeout =
1630                         nconf->dot11MeshHWMPactivePathTimeout;
1631         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1632                 conf->dot11MeshHWMPpreqMinInterval =
1633                         nconf->dot11MeshHWMPpreqMinInterval;
1634         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1635                 conf->dot11MeshHWMPperrMinInterval =
1636                         nconf->dot11MeshHWMPperrMinInterval;
1637         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1638                            mask))
1639                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1640                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1641         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1642                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1643                 ieee80211_mesh_root_setup(ifmsh);
1644         }
1645         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1646                 /* our current gate announcement implementation rides on root
1647                  * announcements, so require this ifmsh to also be a root node
1648                  * */
1649                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1650                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1651                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1652                         ieee80211_mesh_root_setup(ifmsh);
1653                 }
1654                 conf->dot11MeshGateAnnouncementProtocol =
1655                         nconf->dot11MeshGateAnnouncementProtocol;
1656         }
1657         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1658                 conf->dot11MeshHWMPRannInterval =
1659                         nconf->dot11MeshHWMPRannInterval;
1660         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1661                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1662         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1663                 /* our RSSI threshold implementation is supported only for
1664                  * devices that report signal in dBm.
1665                  */
1666                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1667                         return -ENOTSUPP;
1668                 conf->rssi_threshold = nconf->rssi_threshold;
1669         }
1670         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1671                 conf->ht_opmode = nconf->ht_opmode;
1672                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1673                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1674         }
1675         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1676                 conf->dot11MeshHWMPactivePathToRootTimeout =
1677                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1678         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1679                 conf->dot11MeshHWMProotInterval =
1680                         nconf->dot11MeshHWMProotInterval;
1681         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1682                 conf->dot11MeshHWMPconfirmationInterval =
1683                         nconf->dot11MeshHWMPconfirmationInterval;
1684         return 0;
1685 }
1686
1687 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1688                                const struct mesh_config *conf,
1689                                const struct mesh_setup *setup)
1690 {
1691         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1692         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1693         int err;
1694
1695         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1696         err = copy_mesh_setup(ifmsh, setup);
1697         if (err)
1698                 return err;
1699
1700         /* can mesh use other SMPS modes? */
1701         sdata->smps_mode = IEEE80211_SMPS_OFF;
1702         sdata->needed_rx_chains = sdata->local->rx_chains;
1703
1704         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1705                                         IEEE80211_CHANCTX_SHARED);
1706         if (err)
1707                 return err;
1708
1709         ieee80211_start_mesh(sdata);
1710
1711         return 0;
1712 }
1713
1714 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1715 {
1716         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1717
1718         ieee80211_stop_mesh(sdata);
1719         ieee80211_vif_release_channel(sdata);
1720
1721         return 0;
1722 }
1723 #endif
1724
1725 static int ieee80211_change_bss(struct wiphy *wiphy,
1726                                 struct net_device *dev,
1727                                 struct bss_parameters *params)
1728 {
1729         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1730         enum ieee80211_band band;
1731         u32 changed = 0;
1732
1733         if (!rtnl_dereference(sdata->u.ap.beacon))
1734                 return -ENOENT;
1735
1736         band = ieee80211_get_sdata_band(sdata);
1737
1738         if (params->use_cts_prot >= 0) {
1739                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1740                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1741         }
1742         if (params->use_short_preamble >= 0) {
1743                 sdata->vif.bss_conf.use_short_preamble =
1744                         params->use_short_preamble;
1745                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1746         }
1747
1748         if (!sdata->vif.bss_conf.use_short_slot &&
1749             band == IEEE80211_BAND_5GHZ) {
1750                 sdata->vif.bss_conf.use_short_slot = true;
1751                 changed |= BSS_CHANGED_ERP_SLOT;
1752         }
1753
1754         if (params->use_short_slot_time >= 0) {
1755                 sdata->vif.bss_conf.use_short_slot =
1756                         params->use_short_slot_time;
1757                 changed |= BSS_CHANGED_ERP_SLOT;
1758         }
1759
1760         if (params->basic_rates) {
1761                 int i, j;
1762                 u32 rates = 0;
1763                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1764
1765                 for (i = 0; i < params->basic_rates_len; i++) {
1766                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1767                         for (j = 0; j < sband->n_bitrates; j++) {
1768                                 if (sband->bitrates[j].bitrate == rate)
1769                                         rates |= BIT(j);
1770                         }
1771                 }
1772                 sdata->vif.bss_conf.basic_rates = rates;
1773                 changed |= BSS_CHANGED_BASIC_RATES;
1774         }
1775
1776         if (params->ap_isolate >= 0) {
1777                 if (params->ap_isolate)
1778                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1779                 else
1780                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1781         }
1782
1783         if (params->ht_opmode >= 0) {
1784                 sdata->vif.bss_conf.ht_operation_mode =
1785                         (u16) params->ht_opmode;
1786                 changed |= BSS_CHANGED_HT;
1787         }
1788
1789         ieee80211_bss_info_change_notify(sdata, changed);
1790
1791         return 0;
1792 }
1793
1794 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1795                                     struct net_device *dev,
1796                                     struct ieee80211_txq_params *params)
1797 {
1798         struct ieee80211_local *local = wiphy_priv(wiphy);
1799         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800         struct ieee80211_tx_queue_params p;
1801
1802         if (!local->ops->conf_tx)
1803                 return -EOPNOTSUPP;
1804
1805         if (local->hw.queues < IEEE80211_NUM_ACS)
1806                 return -EOPNOTSUPP;
1807
1808         memset(&p, 0, sizeof(p));
1809         p.aifs = params->aifs;
1810         p.cw_max = params->cwmax;
1811         p.cw_min = params->cwmin;
1812         p.txop = params->txop;
1813
1814         /*
1815          * Setting tx queue params disables u-apsd because it's only
1816          * called in master mode.
1817          */
1818         p.uapsd = false;
1819
1820         sdata->tx_conf[params->ac] = p;
1821         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1822                 wiphy_debug(local->hw.wiphy,
1823                             "failed to set TX queue parameters for AC %d\n",
1824                             params->ac);
1825                 return -EINVAL;
1826         }
1827
1828         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1829
1830         return 0;
1831 }
1832
1833 #ifdef CONFIG_PM
1834 static int ieee80211_suspend(struct wiphy *wiphy,
1835                              struct cfg80211_wowlan *wowlan)
1836 {
1837         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1838 }
1839
1840 static int ieee80211_resume(struct wiphy *wiphy)
1841 {
1842         return __ieee80211_resume(wiphy_priv(wiphy));
1843 }
1844 #else
1845 #define ieee80211_suspend NULL
1846 #define ieee80211_resume NULL
1847 #endif
1848
1849 static int ieee80211_scan(struct wiphy *wiphy,
1850                           struct cfg80211_scan_request *req)
1851 {
1852         struct ieee80211_sub_if_data *sdata;
1853
1854         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1855
1856         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1857         case NL80211_IFTYPE_STATION:
1858         case NL80211_IFTYPE_ADHOC:
1859         case NL80211_IFTYPE_MESH_POINT:
1860         case NL80211_IFTYPE_P2P_CLIENT:
1861         case NL80211_IFTYPE_P2P_DEVICE:
1862                 break;
1863         case NL80211_IFTYPE_P2P_GO:
1864                 if (sdata->local->ops->hw_scan)
1865                         break;
1866                 /*
1867                  * FIXME: implement NoA while scanning in software,
1868                  * for now fall through to allow scanning only when
1869                  * beaconing hasn't been configured yet
1870                  */
1871         case NL80211_IFTYPE_AP:
1872                 /*
1873                  * If the scan has been forced (and the driver supports
1874                  * forcing), don't care about being beaconing already.
1875                  * This will create problems to the attached stations (e.g. all
1876                  * the  frames sent while scanning on other channel will be
1877                  * lost)
1878                  */
1879                 if (sdata->u.ap.beacon &&
1880                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1881                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1882                         return -EOPNOTSUPP;
1883                 break;
1884         default:
1885                 return -EOPNOTSUPP;
1886         }
1887
1888         return ieee80211_request_scan(sdata, req);
1889 }
1890
1891 static int
1892 ieee80211_sched_scan_start(struct wiphy *wiphy,
1893                            struct net_device *dev,
1894                            struct cfg80211_sched_scan_request *req)
1895 {
1896         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1897
1898         if (!sdata->local->ops->sched_scan_start)
1899                 return -EOPNOTSUPP;
1900
1901         return ieee80211_request_sched_scan_start(sdata, req);
1902 }
1903
1904 static int
1905 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1906 {
1907         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1908
1909         if (!sdata->local->ops->sched_scan_stop)
1910                 return -EOPNOTSUPP;
1911
1912         return ieee80211_request_sched_scan_stop(sdata);
1913 }
1914
1915 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1916                           struct cfg80211_auth_request *req)
1917 {
1918         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1919 }
1920
1921 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1922                            struct cfg80211_assoc_request *req)
1923 {
1924         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1925 }
1926
1927 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1928                             struct cfg80211_deauth_request *req)
1929 {
1930         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1931 }
1932
1933 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1934                               struct cfg80211_disassoc_request *req)
1935 {
1936         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1937 }
1938
1939 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1940                                struct cfg80211_ibss_params *params)
1941 {
1942         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1943 }
1944
1945 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1946 {
1947         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1948 }
1949
1950 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
1951                                     int rate[IEEE80211_NUM_BANDS])
1952 {
1953         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1954
1955         memcpy(sdata->vif.bss_conf.mcast_rate, rate, sizeof(rate));
1956
1957         return 0;
1958 }
1959
1960 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1961 {
1962         struct ieee80211_local *local = wiphy_priv(wiphy);
1963         int err;
1964
1965         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1966                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1967
1968                 if (err)
1969                         return err;
1970         }
1971
1972         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1973                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1974
1975                 if (err)
1976                         return err;
1977         }
1978
1979         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1980                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1981
1982                 if (err)
1983                         return err;
1984         }
1985
1986         if (changed & WIPHY_PARAM_RETRY_SHORT)
1987                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1988         if (changed & WIPHY_PARAM_RETRY_LONG)
1989                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1990         if (changed &
1991             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1992                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1993
1994         return 0;
1995 }
1996
1997 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1998                                   struct wireless_dev *wdev,
1999                                   enum nl80211_tx_power_setting type, int mbm)
2000 {
2001         struct ieee80211_local *local = wiphy_priv(wiphy);
2002         struct ieee80211_sub_if_data *sdata;
2003
2004         if (wdev) {
2005                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2006
2007                 switch (type) {
2008                 case NL80211_TX_POWER_AUTOMATIC:
2009                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2010                         break;
2011                 case NL80211_TX_POWER_LIMITED:
2012                 case NL80211_TX_POWER_FIXED:
2013                         if (mbm < 0 || (mbm % 100))
2014                                 return -EOPNOTSUPP;
2015                         sdata->user_power_level = MBM_TO_DBM(mbm);
2016                         break;
2017                 }
2018
2019                 ieee80211_recalc_txpower(sdata);
2020
2021                 return 0;
2022         }
2023
2024         switch (type) {
2025         case NL80211_TX_POWER_AUTOMATIC:
2026                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2027                 break;
2028         case NL80211_TX_POWER_LIMITED:
2029         case NL80211_TX_POWER_FIXED:
2030                 if (mbm < 0 || (mbm % 100))
2031                         return -EOPNOTSUPP;
2032                 local->user_power_level = MBM_TO_DBM(mbm);
2033                 break;
2034         }
2035
2036         mutex_lock(&local->iflist_mtx);
2037         list_for_each_entry(sdata, &local->interfaces, list)
2038                 sdata->user_power_level = local->user_power_level;
2039         list_for_each_entry(sdata, &local->interfaces, list)
2040                 ieee80211_recalc_txpower(sdata);
2041         mutex_unlock(&local->iflist_mtx);
2042
2043         return 0;
2044 }
2045
2046 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2047                                   struct wireless_dev *wdev,
2048                                   int *dbm)
2049 {
2050         struct ieee80211_local *local = wiphy_priv(wiphy);
2051         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2052
2053         if (!local->use_chanctx)
2054                 *dbm = local->hw.conf.power_level;
2055         else
2056                 *dbm = sdata->vif.bss_conf.txpower;
2057
2058         return 0;
2059 }
2060
2061 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2062                                   const u8 *addr)
2063 {
2064         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2065
2066         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2067
2068         return 0;
2069 }
2070
2071 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2072 {
2073         struct ieee80211_local *local = wiphy_priv(wiphy);
2074
2075         drv_rfkill_poll(local);
2076 }
2077
2078 #ifdef CONFIG_NL80211_TESTMODE
2079 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2080 {
2081         struct ieee80211_local *local = wiphy_priv(wiphy);
2082
2083         if (!local->ops->testmode_cmd)
2084                 return -EOPNOTSUPP;
2085
2086         return local->ops->testmode_cmd(&local->hw, data, len);
2087 }
2088
2089 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2090                                    struct sk_buff *skb,
2091                                    struct netlink_callback *cb,
2092                                    void *data, int len)
2093 {
2094         struct ieee80211_local *local = wiphy_priv(wiphy);
2095
2096         if (!local->ops->testmode_dump)
2097                 return -EOPNOTSUPP;
2098
2099         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2100 }
2101 #endif
2102
2103 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2104                              enum ieee80211_smps_mode smps_mode)
2105 {
2106         const u8 *ap;
2107         enum ieee80211_smps_mode old_req;
2108         int err;
2109
2110         lockdep_assert_held(&sdata->u.mgd.mtx);
2111
2112         old_req = sdata->u.mgd.req_smps;
2113         sdata->u.mgd.req_smps = smps_mode;
2114
2115         if (old_req == smps_mode &&
2116             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2117                 return 0;
2118
2119         /*
2120          * If not associated, or current association is not an HT
2121          * association, there's no need to do anything, just store
2122          * the new value until we associate.
2123          */
2124         if (!sdata->u.mgd.associated ||
2125             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2126                 return 0;
2127
2128         ap = sdata->u.mgd.associated->bssid;
2129
2130         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2131                 if (sdata->u.mgd.powersave)
2132                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2133                 else
2134                         smps_mode = IEEE80211_SMPS_OFF;
2135         }
2136
2137         /* send SM PS frame to AP */
2138         err = ieee80211_send_smps_action(sdata, smps_mode,
2139                                          ap, ap);
2140         if (err)
2141                 sdata->u.mgd.req_smps = old_req;
2142
2143         return err;
2144 }
2145
2146 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2147                                     bool enabled, int timeout)
2148 {
2149         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2150         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2151
2152         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2153                 return -EOPNOTSUPP;
2154
2155         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2156                 return -EOPNOTSUPP;
2157
2158         if (enabled == sdata->u.mgd.powersave &&
2159             timeout == local->dynamic_ps_forced_timeout)
2160                 return 0;
2161
2162         sdata->u.mgd.powersave = enabled;
2163         local->dynamic_ps_forced_timeout = timeout;
2164
2165         /* no change, but if automatic follow powersave */
2166         mutex_lock(&sdata->u.mgd.mtx);
2167         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2168         mutex_unlock(&sdata->u.mgd.mtx);
2169
2170         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2171                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2172
2173         ieee80211_recalc_ps(local, -1);
2174         ieee80211_recalc_ps_vif(sdata);
2175
2176         return 0;
2177 }
2178
2179 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2180                                          struct net_device *dev,
2181                                          s32 rssi_thold, u32 rssi_hyst)
2182 {
2183         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2184         struct ieee80211_vif *vif = &sdata->vif;
2185         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2186
2187         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2188             rssi_hyst == bss_conf->cqm_rssi_hyst)
2189                 return 0;
2190
2191         bss_conf->cqm_rssi_thold = rssi_thold;
2192         bss_conf->cqm_rssi_hyst = rssi_hyst;
2193
2194         /* tell the driver upon association, unless already associated */
2195         if (sdata->u.mgd.associated &&
2196             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2197                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2198
2199         return 0;
2200 }
2201
2202 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2203                                       struct net_device *dev,
2204                                       const u8 *addr,
2205                                       const struct cfg80211_bitrate_mask *mask)
2206 {
2207         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2208         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2209         int i, ret;
2210
2211         if (!ieee80211_sdata_running(sdata))
2212                 return -ENETDOWN;
2213
2214         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2215                 ret = drv_set_bitrate_mask(local, sdata, mask);
2216                 if (ret)
2217                         return ret;
2218         }
2219
2220         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2221                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2222                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2223                        sizeof(mask->control[i].mcs));
2224         }
2225
2226         return 0;
2227 }
2228
2229 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2230                                     struct ieee80211_sub_if_data *sdata,
2231                                     struct ieee80211_channel *channel,
2232                                     unsigned int duration, u64 *cookie,
2233                                     struct sk_buff *txskb)
2234 {
2235         struct ieee80211_roc_work *roc, *tmp;
2236         bool queued = false;
2237         int ret;
2238
2239         lockdep_assert_held(&local->mtx);
2240
2241         if (local->use_chanctx && !local->ops->remain_on_channel)
2242                 return -EOPNOTSUPP;
2243
2244         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2245         if (!roc)
2246                 return -ENOMEM;
2247
2248         roc->chan = channel;
2249         roc->duration = duration;
2250         roc->req_duration = duration;
2251         roc->frame = txskb;
2252         roc->mgmt_tx_cookie = (unsigned long)txskb;
2253         roc->sdata = sdata;
2254         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2255         INIT_LIST_HEAD(&roc->dependents);
2256
2257         /* if there's one pending or we're scanning, queue this one */
2258         if (!list_empty(&local->roc_list) || local->scanning)
2259                 goto out_check_combine;
2260
2261         /* if not HW assist, just queue & schedule work */
2262         if (!local->ops->remain_on_channel) {
2263                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2264                 goto out_queue;
2265         }
2266
2267         /* otherwise actually kick it off here (for error handling) */
2268
2269         /*
2270          * If the duration is zero, then the driver
2271          * wouldn't actually do anything. Set it to
2272          * 10 for now.
2273          *
2274          * TODO: cancel the off-channel operation
2275          *       when we get the SKB's TX status and
2276          *       the wait time was zero before.
2277          */
2278         if (!duration)
2279                 duration = 10;
2280
2281         ret = drv_remain_on_channel(local, sdata, channel, duration);
2282         if (ret) {
2283                 kfree(roc);
2284                 return ret;
2285         }
2286
2287         roc->started = true;
2288         goto out_queue;
2289
2290  out_check_combine:
2291         list_for_each_entry(tmp, &local->roc_list, list) {
2292                 if (tmp->chan != channel || tmp->sdata != sdata)
2293                         continue;
2294
2295                 /*
2296                  * Extend this ROC if possible:
2297                  *
2298                  * If it hasn't started yet, just increase the duration
2299                  * and add the new one to the list of dependents.
2300                  */
2301                 if (!tmp->started) {
2302                         list_add_tail(&roc->list, &tmp->dependents);
2303                         tmp->duration = max(tmp->duration, roc->duration);
2304                         queued = true;
2305                         break;
2306                 }
2307
2308                 /* If it has already started, it's more difficult ... */
2309                 if (local->ops->remain_on_channel) {
2310                         unsigned long j = jiffies;
2311
2312                         /*
2313                          * In the offloaded ROC case, if it hasn't begun, add
2314                          * this new one to the dependent list to be handled
2315                          * when the the master one begins. If it has begun,
2316                          * check that there's still a minimum time left and
2317                          * if so, start this one, transmitting the frame, but
2318                          * add it to the list directly after this one with a
2319                          * a reduced time so we'll ask the driver to execute
2320                          * it right after finishing the previous one, in the
2321                          * hope that it'll also be executed right afterwards,
2322                          * effectively extending the old one.
2323                          * If there's no minimum time left, just add it to the
2324                          * normal list.
2325                          */
2326                         if (!tmp->hw_begun) {
2327                                 list_add_tail(&roc->list, &tmp->dependents);
2328                                 queued = true;
2329                                 break;
2330                         }
2331
2332                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2333                                         tmp->hw_start_time +
2334                                         msecs_to_jiffies(tmp->duration))) {
2335                                 int new_dur;
2336
2337                                 ieee80211_handle_roc_started(roc);
2338
2339                                 new_dur = roc->duration -
2340                                           jiffies_to_msecs(tmp->hw_start_time +
2341                                                            msecs_to_jiffies(
2342                                                                 tmp->duration) -
2343                                                            j);
2344
2345                                 if (new_dur > 0) {
2346                                         /* add right after tmp */
2347                                         list_add(&roc->list, &tmp->list);
2348                                 } else {
2349                                         list_add_tail(&roc->list,
2350                                                       &tmp->dependents);
2351                                 }
2352                                 queued = true;
2353                         }
2354                 } else if (del_timer_sync(&tmp->work.timer)) {
2355                         unsigned long new_end;
2356
2357                         /*
2358                          * In the software ROC case, cancel the timer, if
2359                          * that fails then the finish work is already
2360                          * queued/pending and thus we queue the new ROC
2361                          * normally, if that succeeds then we can extend
2362                          * the timer duration and TX the frame (if any.)
2363                          */
2364
2365                         list_add_tail(&roc->list, &tmp->dependents);
2366                         queued = true;
2367
2368                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2369
2370                         /* ok, it was started & we canceled timer */
2371                         if (time_after(new_end, tmp->work.timer.expires))
2372                                 mod_timer(&tmp->work.timer, new_end);
2373                         else
2374                                 add_timer(&tmp->work.timer);
2375
2376                         ieee80211_handle_roc_started(roc);
2377                 }
2378                 break;
2379         }
2380
2381  out_queue:
2382         if (!queued)
2383                 list_add_tail(&roc->list, &local->roc_list);
2384
2385         /*
2386          * cookie is either the roc cookie (for normal roc)
2387          * or the SKB (for mgmt TX)
2388          */
2389         if (!txskb) {
2390                 /* local->mtx protects this */
2391                 local->roc_cookie_counter++;
2392                 roc->cookie = local->roc_cookie_counter;
2393                 /* wow, you wrapped 64 bits ... more likely a bug */
2394                 if (WARN_ON(roc->cookie == 0)) {
2395                         roc->cookie = 1;
2396                         local->roc_cookie_counter++;
2397                 }
2398                 *cookie = roc->cookie;
2399         } else {
2400                 *cookie = (unsigned long)txskb;
2401         }
2402
2403         return 0;
2404 }
2405
2406 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2407                                        struct wireless_dev *wdev,
2408                                        struct ieee80211_channel *chan,
2409                                        unsigned int duration,
2410                                        u64 *cookie)
2411 {
2412         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2413         struct ieee80211_local *local = sdata->local;
2414         int ret;
2415
2416         mutex_lock(&local->mtx);
2417         ret = ieee80211_start_roc_work(local, sdata, chan,
2418                                        duration, cookie, NULL);
2419         mutex_unlock(&local->mtx);
2420
2421         return ret;
2422 }
2423
2424 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2425                                 u64 cookie, bool mgmt_tx)
2426 {
2427         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2428         int ret;
2429
2430         mutex_lock(&local->mtx);
2431         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2432                 struct ieee80211_roc_work *dep, *tmp2;
2433
2434                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2435                         if (!mgmt_tx && dep->cookie != cookie)
2436                                 continue;
2437                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2438                                 continue;
2439                         /* found dependent item -- just remove it */
2440                         list_del(&dep->list);
2441                         mutex_unlock(&local->mtx);
2442
2443                         ieee80211_roc_notify_destroy(dep);
2444                         return 0;
2445                 }
2446
2447                 if (!mgmt_tx && roc->cookie != cookie)
2448                         continue;
2449                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2450                         continue;
2451
2452                 found = roc;
2453                 break;
2454         }
2455
2456         if (!found) {
2457                 mutex_unlock(&local->mtx);
2458                 return -ENOENT;
2459         }
2460
2461         /*
2462          * We found the item to cancel, so do that. Note that it
2463          * may have dependents, which we also cancel (and send
2464          * the expired signal for.) Not doing so would be quite
2465          * tricky here, but we may need to fix it later.
2466          */
2467
2468         if (local->ops->remain_on_channel) {
2469                 if (found->started) {
2470                         ret = drv_cancel_remain_on_channel(local);
2471                         if (WARN_ON_ONCE(ret)) {
2472                                 mutex_unlock(&local->mtx);
2473                                 return ret;
2474                         }
2475                 }
2476
2477                 list_del(&found->list);
2478
2479                 if (found->started)
2480                         ieee80211_start_next_roc(local);
2481                 mutex_unlock(&local->mtx);
2482
2483                 ieee80211_roc_notify_destroy(found);
2484         } else {
2485                 /* work may be pending so use it all the time */
2486                 found->abort = true;
2487                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2488
2489                 mutex_unlock(&local->mtx);
2490
2491                 /* work will clean up etc */
2492                 flush_delayed_work(&found->work);
2493         }
2494
2495         return 0;
2496 }
2497
2498 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2499                                               struct wireless_dev *wdev,
2500                                               u64 cookie)
2501 {
2502         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2503         struct ieee80211_local *local = sdata->local;
2504
2505         return ieee80211_cancel_roc(local, cookie, false);
2506 }
2507
2508 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2509                              struct ieee80211_channel *chan, bool offchan,
2510                              unsigned int wait, const u8 *buf, size_t len,
2511                              bool no_cck, bool dont_wait_for_ack, u64 *cookie)
2512 {
2513         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2514         struct ieee80211_local *local = sdata->local;
2515         struct sk_buff *skb;
2516         struct sta_info *sta;
2517         const struct ieee80211_mgmt *mgmt = (void *)buf;
2518         bool need_offchan = false;
2519         u32 flags;
2520         int ret;
2521
2522         if (dont_wait_for_ack)
2523                 flags = IEEE80211_TX_CTL_NO_ACK;
2524         else
2525                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2526                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2527
2528         if (no_cck)
2529                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2530
2531         switch (sdata->vif.type) {
2532         case NL80211_IFTYPE_ADHOC:
2533                 if (!sdata->vif.bss_conf.ibss_joined)
2534                         need_offchan = true;
2535                 /* fall through */
2536 #ifdef CONFIG_MAC80211_MESH
2537         case NL80211_IFTYPE_MESH_POINT:
2538                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2539                     !sdata->u.mesh.mesh_id_len)
2540                         need_offchan = true;
2541                 /* fall through */
2542 #endif
2543         case NL80211_IFTYPE_AP:
2544         case NL80211_IFTYPE_AP_VLAN:
2545         case NL80211_IFTYPE_P2P_GO:
2546                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2547                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2548                     !rcu_access_pointer(sdata->bss->beacon))
2549                         need_offchan = true;
2550                 if (!ieee80211_is_action(mgmt->frame_control) ||
2551                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2552                         break;
2553                 rcu_read_lock();
2554                 sta = sta_info_get(sdata, mgmt->da);
2555                 rcu_read_unlock();
2556                 if (!sta)
2557                         return -ENOLINK;
2558                 break;
2559         case NL80211_IFTYPE_STATION:
2560         case NL80211_IFTYPE_P2P_CLIENT:
2561                 if (!sdata->u.mgd.associated)
2562                         need_offchan = true;
2563                 break;
2564         case NL80211_IFTYPE_P2P_DEVICE:
2565                 need_offchan = true;
2566                 break;
2567         default:
2568                 return -EOPNOTSUPP;
2569         }
2570
2571         mutex_lock(&local->mtx);
2572
2573         /* Check if the operating channel is the requested channel */
2574         if (!need_offchan) {
2575                 struct ieee80211_chanctx_conf *chanctx_conf;
2576
2577                 rcu_read_lock();
2578                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2579
2580                 if (chanctx_conf)
2581                         need_offchan = chan != chanctx_conf->def.chan;
2582                 else
2583                         need_offchan = true;
2584                 rcu_read_unlock();
2585         }
2586
2587         if (need_offchan && !offchan) {
2588                 ret = -EBUSY;
2589                 goto out_unlock;
2590         }
2591
2592         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2593         if (!skb) {
2594                 ret = -ENOMEM;
2595                 goto out_unlock;
2596         }
2597         skb_reserve(skb, local->hw.extra_tx_headroom);
2598
2599         memcpy(skb_put(skb, len), buf, len);
2600
2601         IEEE80211_SKB_CB(skb)->flags = flags;
2602
2603         skb->dev = sdata->dev;
2604
2605         if (!need_offchan) {
2606                 *cookie = (unsigned long) skb;
2607                 ieee80211_tx_skb(sdata, skb);
2608                 ret = 0;
2609                 goto out_unlock;
2610         }
2611
2612         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2613         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2614                 IEEE80211_SKB_CB(skb)->hw_queue =
2615                         local->hw.offchannel_tx_hw_queue;
2616
2617         /* This will handle all kinds of coalescing and immediate TX */
2618         ret = ieee80211_start_roc_work(local, sdata, chan,
2619                                        wait, cookie, skb);
2620         if (ret)
2621                 kfree_skb(skb);
2622  out_unlock:
2623         mutex_unlock(&local->mtx);
2624         return ret;
2625 }
2626
2627 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2628                                          struct wireless_dev *wdev,
2629                                          u64 cookie)
2630 {
2631         struct ieee80211_local *local = wiphy_priv(wiphy);
2632
2633         return ieee80211_cancel_roc(local, cookie, true);
2634 }
2635
2636 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2637                                           struct wireless_dev *wdev,
2638                                           u16 frame_type, bool reg)
2639 {
2640         struct ieee80211_local *local = wiphy_priv(wiphy);
2641         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2642
2643         switch (frame_type) {
2644         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2645                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2646                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2647
2648                         if (reg)
2649                                 ifibss->auth_frame_registrations++;
2650                         else
2651                                 ifibss->auth_frame_registrations--;
2652                 }
2653                 break;
2654         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2655                 if (reg)
2656                         local->probe_req_reg++;
2657                 else
2658                         local->probe_req_reg--;
2659
2660                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2661                 break;
2662         default:
2663                 break;
2664         }
2665 }
2666
2667 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2668 {
2669         struct ieee80211_local *local = wiphy_priv(wiphy);
2670
2671         if (local->started)
2672                 return -EOPNOTSUPP;
2673
2674         return drv_set_antenna(local, tx_ant, rx_ant);
2675 }
2676
2677 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2678 {
2679         struct ieee80211_local *local = wiphy_priv(wiphy);
2680
2681         return drv_get_antenna(local, tx_ant, rx_ant);
2682 }
2683
2684 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2685 {
2686         struct ieee80211_local *local = wiphy_priv(wiphy);
2687
2688         return drv_set_ringparam(local, tx, rx);
2689 }
2690
2691 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2692                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2693 {
2694         struct ieee80211_local *local = wiphy_priv(wiphy);
2695
2696         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2697 }
2698
2699 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2700                                     struct net_device *dev,
2701                                     struct cfg80211_gtk_rekey_data *data)
2702 {
2703         struct ieee80211_local *local = wiphy_priv(wiphy);
2704         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2705
2706         if (!local->ops->set_rekey_data)
2707                 return -EOPNOTSUPP;
2708
2709         drv_set_rekey_data(local, sdata, data);
2710
2711         return 0;
2712 }
2713
2714 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2715 {
2716         u8 *pos = (void *)skb_put(skb, 7);
2717
2718         *pos++ = WLAN_EID_EXT_CAPABILITY;
2719         *pos++ = 5; /* len */
2720         *pos++ = 0x0;
2721         *pos++ = 0x0;
2722         *pos++ = 0x0;
2723         *pos++ = 0x0;
2724         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2725 }
2726
2727 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2728 {
2729         struct ieee80211_local *local = sdata->local;
2730         u16 capab;
2731
2732         capab = 0;
2733         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2734                 return capab;
2735
2736         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2737                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2738         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2739                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2740
2741         return capab;
2742 }
2743
2744 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2745                                        u8 *peer, u8 *bssid)
2746 {
2747         struct ieee80211_tdls_lnkie *lnkid;
2748
2749         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2750
2751         lnkid->ie_type = WLAN_EID_LINK_ID;
2752         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2753
2754         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2755         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2756         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2757 }
2758
2759 static int
2760 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2761                                u8 *peer, u8 action_code, u8 dialog_token,
2762                                u16 status_code, struct sk_buff *skb)
2763 {
2764         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2765         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2766         struct ieee80211_tdls_data *tf;
2767
2768         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2769
2770         memcpy(tf->da, peer, ETH_ALEN);
2771         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2772         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2773         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2774
2775         switch (action_code) {
2776         case WLAN_TDLS_SETUP_REQUEST:
2777                 tf->category = WLAN_CATEGORY_TDLS;
2778                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2779
2780                 skb_put(skb, sizeof(tf->u.setup_req));
2781                 tf->u.setup_req.dialog_token = dialog_token;
2782                 tf->u.setup_req.capability =
2783                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2784
2785                 ieee80211_add_srates_ie(sdata, skb, false, band);
2786                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2787                 ieee80211_tdls_add_ext_capab(skb);
2788                 break;
2789         case WLAN_TDLS_SETUP_RESPONSE:
2790                 tf->category = WLAN_CATEGORY_TDLS;
2791                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2792
2793                 skb_put(skb, sizeof(tf->u.setup_resp));
2794                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2795                 tf->u.setup_resp.dialog_token = dialog_token;
2796                 tf->u.setup_resp.capability =
2797                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2798
2799                 ieee80211_add_srates_ie(sdata, skb, false, band);
2800                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2801                 ieee80211_tdls_add_ext_capab(skb);
2802                 break;
2803         case WLAN_TDLS_SETUP_CONFIRM:
2804                 tf->category = WLAN_CATEGORY_TDLS;
2805                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2806
2807                 skb_put(skb, sizeof(tf->u.setup_cfm));
2808                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2809                 tf->u.setup_cfm.dialog_token = dialog_token;
2810                 break;
2811         case WLAN_TDLS_TEARDOWN:
2812                 tf->category = WLAN_CATEGORY_TDLS;
2813                 tf->action_code = WLAN_TDLS_TEARDOWN;
2814
2815                 skb_put(skb, sizeof(tf->u.teardown));
2816                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2817                 break;
2818         case WLAN_TDLS_DISCOVERY_REQUEST:
2819                 tf->category = WLAN_CATEGORY_TDLS;
2820                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2821
2822                 skb_put(skb, sizeof(tf->u.discover_req));
2823                 tf->u.discover_req.dialog_token = dialog_token;
2824                 break;
2825         default:
2826                 return -EINVAL;
2827         }
2828
2829         return 0;
2830 }
2831
2832 static int
2833 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2834                            u8 *peer, u8 action_code, u8 dialog_token,
2835                            u16 status_code, struct sk_buff *skb)
2836 {
2837         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2838         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2839         struct ieee80211_mgmt *mgmt;
2840
2841         mgmt = (void *)skb_put(skb, 24);
2842         memset(mgmt, 0, 24);
2843         memcpy(mgmt->da, peer, ETH_ALEN);
2844         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2845         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2846
2847         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2848                                           IEEE80211_STYPE_ACTION);
2849
2850         switch (action_code) {
2851         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2852                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2853                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2854                 mgmt->u.action.u.tdls_discover_resp.action_code =
2855                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2856                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2857                         dialog_token;
2858                 mgmt->u.action.u.tdls_discover_resp.capability =
2859                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2860
2861                 ieee80211_add_srates_ie(sdata, skb, false, band);
2862                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2863                 ieee80211_tdls_add_ext_capab(skb);
2864                 break;
2865         default:
2866                 return -EINVAL;
2867         }
2868
2869         return 0;
2870 }
2871
2872 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2873                                u8 *peer, u8 action_code, u8 dialog_token,
2874                                u16 status_code, const u8 *extra_ies,
2875                                size_t extra_ies_len)
2876 {
2877         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2878         struct ieee80211_local *local = sdata->local;
2879         struct sk_buff *skb = NULL;
2880         bool send_direct;
2881         int ret;
2882
2883         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2884                 return -ENOTSUPP;
2885
2886         /* make sure we are in managed mode, and associated */
2887         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2888             !sdata->u.mgd.associated)
2889                 return -EINVAL;
2890
2891         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2892                  action_code, peer);
2893
2894         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2895                             max(sizeof(struct ieee80211_mgmt),
2896                                 sizeof(struct ieee80211_tdls_data)) +
2897                             50 + /* supported rates */
2898                             7 + /* ext capab */
2899                             extra_ies_len +
2900                             sizeof(struct ieee80211_tdls_lnkie));
2901         if (!skb)
2902                 return -ENOMEM;
2903
2904         skb_reserve(skb, local->hw.extra_tx_headroom);
2905
2906         switch (action_code) {
2907         case WLAN_TDLS_SETUP_REQUEST:
2908         case WLAN_TDLS_SETUP_RESPONSE:
2909         case WLAN_TDLS_SETUP_CONFIRM:
2910         case WLAN_TDLS_TEARDOWN:
2911         case WLAN_TDLS_DISCOVERY_REQUEST:
2912                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2913                                                      action_code, dialog_token,
2914                                                      status_code, skb);
2915                 send_direct = false;
2916                 break;
2917         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2918                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2919                                                  dialog_token, status_code,
2920                                                  skb);
2921                 send_direct = true;
2922                 break;
2923         default:
2924                 ret = -ENOTSUPP;
2925                 break;
2926         }
2927
2928         if (ret < 0)
2929                 goto fail;
2930
2931         if (extra_ies_len)
2932                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2933
2934         /* the TDLS link IE is always added last */
2935         switch (action_code) {
2936         case WLAN_TDLS_SETUP_REQUEST:
2937         case WLAN_TDLS_SETUP_CONFIRM:
2938         case WLAN_TDLS_TEARDOWN:
2939         case WLAN_TDLS_DISCOVERY_REQUEST:
2940                 /* we are the initiator */
2941                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2942                                            sdata->u.mgd.bssid);
2943                 break;
2944         case WLAN_TDLS_SETUP_RESPONSE:
2945         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2946                 /* we are the responder */
2947                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2948                                            sdata->u.mgd.bssid);
2949                 break;
2950         default:
2951                 ret = -ENOTSUPP;
2952                 goto fail;
2953         }
2954
2955         if (send_direct) {
2956                 ieee80211_tx_skb(sdata, skb);
2957                 return 0;
2958         }
2959
2960         /*
2961          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2962          * we should default to AC_VI.
2963          */
2964         switch (action_code) {
2965         case WLAN_TDLS_SETUP_REQUEST:
2966         case WLAN_TDLS_SETUP_RESPONSE:
2967                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2968                 skb->priority = 2;
2969                 break;
2970         default:
2971                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2972                 skb->priority = 5;
2973                 break;
2974         }
2975
2976         /* disable bottom halves when entering the Tx path */
2977         local_bh_disable();
2978         ret = ieee80211_subif_start_xmit(skb, dev);
2979         local_bh_enable();
2980
2981         return ret;
2982
2983 fail:
2984         dev_kfree_skb(skb);
2985         return ret;
2986 }
2987
2988 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2989                                u8 *peer, enum nl80211_tdls_operation oper)
2990 {
2991         struct sta_info *sta;
2992         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2993
2994         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2995                 return -ENOTSUPP;
2996
2997         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2998                 return -EINVAL;
2999
3000         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
3001
3002         switch (oper) {
3003         case NL80211_TDLS_ENABLE_LINK:
3004                 rcu_read_lock();
3005                 sta = sta_info_get(sdata, peer);
3006                 if (!sta) {
3007                         rcu_read_unlock();
3008                         return -ENOLINK;
3009                 }
3010
3011                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
3012                 rcu_read_unlock();
3013                 break;
3014         case NL80211_TDLS_DISABLE_LINK:
3015                 return sta_info_destroy_addr(sdata, peer);
3016         case NL80211_TDLS_TEARDOWN:
3017         case NL80211_TDLS_SETUP:
3018         case NL80211_TDLS_DISCOVERY_REQ:
3019                 /* We don't support in-driver setup/teardown/discovery */
3020                 return -ENOTSUPP;
3021         default:
3022                 return -ENOTSUPP;
3023         }
3024
3025         return 0;
3026 }
3027
3028 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3029                                   const u8 *peer, u64 *cookie)
3030 {
3031         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3032         struct ieee80211_local *local = sdata->local;
3033         struct ieee80211_qos_hdr *nullfunc;
3034         struct sk_buff *skb;
3035         int size = sizeof(*nullfunc);
3036         __le16 fc;
3037         bool qos;
3038         struct ieee80211_tx_info *info;
3039         struct sta_info *sta;
3040         struct ieee80211_chanctx_conf *chanctx_conf;
3041         enum ieee80211_band band;
3042
3043         rcu_read_lock();
3044         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3045         if (WARN_ON(!chanctx_conf)) {
3046                 rcu_read_unlock();
3047                 return -EINVAL;
3048         }
3049         band = chanctx_conf->def.chan->band;
3050         sta = sta_info_get(sdata, peer);
3051         if (sta) {
3052                 qos = test_sta_flag(sta, WLAN_STA_WME);
3053         } else {
3054                 rcu_read_unlock();
3055                 return -ENOLINK;
3056         }
3057
3058         if (qos) {
3059                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3060                                  IEEE80211_STYPE_QOS_NULLFUNC |
3061                                  IEEE80211_FCTL_FROMDS);
3062         } else {
3063                 size -= 2;
3064                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3065                                  IEEE80211_STYPE_NULLFUNC |
3066                                  IEEE80211_FCTL_FROMDS);
3067         }
3068
3069         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3070         if (!skb) {
3071                 rcu_read_unlock();
3072                 return -ENOMEM;
3073         }
3074
3075         skb->dev = dev;
3076
3077         skb_reserve(skb, local->hw.extra_tx_headroom);
3078
3079         nullfunc = (void *) skb_put(skb, size);
3080         nullfunc->frame_control = fc;
3081         nullfunc->duration_id = 0;
3082         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3083         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3084         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3085         nullfunc->seq_ctrl = 0;
3086
3087         info = IEEE80211_SKB_CB(skb);
3088
3089         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3090                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3091
3092         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3093         skb->priority = 7;
3094         if (qos)
3095                 nullfunc->qos_ctrl = cpu_to_le16(7);
3096
3097         local_bh_disable();
3098         ieee80211_xmit(sdata, skb, band);
3099         local_bh_enable();
3100         rcu_read_unlock();
3101
3102         *cookie = (unsigned long) skb;
3103         return 0;
3104 }
3105
3106 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3107                                      struct wireless_dev *wdev,
3108                                      struct cfg80211_chan_def *chandef)
3109 {
3110         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3111         struct ieee80211_chanctx_conf *chanctx_conf;
3112         int ret = -ENODATA;
3113
3114         rcu_read_lock();
3115         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3116         if (chanctx_conf) {
3117                 *chandef = chanctx_conf->def;
3118                 ret = 0;
3119         }
3120         rcu_read_unlock();
3121
3122         return ret;
3123 }
3124
3125 #ifdef CONFIG_PM
3126 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3127 {
3128         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3129 }
3130 #endif
3131
3132 struct cfg80211_ops mac80211_config_ops = {
3133         .add_virtual_intf = ieee80211_add_iface,
3134         .del_virtual_intf = ieee80211_del_iface,
3135         .change_virtual_intf = ieee80211_change_iface,
3136         .start_p2p_device = ieee80211_start_p2p_device,
3137         .stop_p2p_device = ieee80211_stop_p2p_device,
3138         .add_key = ieee80211_add_key,
3139         .del_key = ieee80211_del_key,
3140         .get_key = ieee80211_get_key,
3141         .set_default_key = ieee80211_config_default_key,
3142         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3143         .start_ap = ieee80211_start_ap,
3144         .change_beacon = ieee80211_change_beacon,
3145         .stop_ap = ieee80211_stop_ap,
3146         .add_station = ieee80211_add_station,
3147         .del_station = ieee80211_del_station,
3148         .change_station = ieee80211_change_station,
3149         .get_station = ieee80211_get_station,
3150         .dump_station = ieee80211_dump_station,
3151         .dump_survey = ieee80211_dump_survey,
3152 #ifdef CONFIG_MAC80211_MESH
3153         .add_mpath = ieee80211_add_mpath,
3154         .del_mpath = ieee80211_del_mpath,
3155         .change_mpath = ieee80211_change_mpath,
3156         .get_mpath = ieee80211_get_mpath,
3157         .dump_mpath = ieee80211_dump_mpath,
3158         .update_mesh_config = ieee80211_update_mesh_config,
3159         .get_mesh_config = ieee80211_get_mesh_config,
3160         .join_mesh = ieee80211_join_mesh,
3161         .leave_mesh = ieee80211_leave_mesh,
3162 #endif
3163         .change_bss = ieee80211_change_bss,
3164         .set_txq_params = ieee80211_set_txq_params,
3165         .set_monitor_channel = ieee80211_set_monitor_channel,
3166         .suspend = ieee80211_suspend,
3167         .resume = ieee80211_resume,
3168         .scan = ieee80211_scan,
3169         .sched_scan_start = ieee80211_sched_scan_start,
3170         .sched_scan_stop = ieee80211_sched_scan_stop,
3171         .auth = ieee80211_auth,
3172         .assoc = ieee80211_assoc,
3173         .deauth = ieee80211_deauth,
3174         .disassoc = ieee80211_disassoc,
3175         .join_ibss = ieee80211_join_ibss,
3176         .leave_ibss = ieee80211_leave_ibss,
3177         .set_mcast_rate = ieee80211_set_mcast_rate,
3178         .set_wiphy_params = ieee80211_set_wiphy_params,
3179         .set_tx_power = ieee80211_set_tx_power,
3180         .get_tx_power = ieee80211_get_tx_power,
3181         .set_wds_peer = ieee80211_set_wds_peer,
3182         .rfkill_poll = ieee80211_rfkill_poll,
3183         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3184         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3185         .set_power_mgmt = ieee80211_set_power_mgmt,
3186         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3187         .remain_on_channel = ieee80211_remain_on_channel,
3188         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3189         .mgmt_tx = ieee80211_mgmt_tx,
3190         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3191         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3192         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3193         .set_antenna = ieee80211_set_antenna,
3194         .get_antenna = ieee80211_get_antenna,
3195         .set_ringparam = ieee80211_set_ringparam,
3196         .get_ringparam = ieee80211_get_ringparam,
3197         .set_rekey_data = ieee80211_set_rekey_data,
3198         .tdls_oper = ieee80211_tdls_oper,
3199         .tdls_mgmt = ieee80211_tdls_mgmt,
3200         .probe_client = ieee80211_probe_client,
3201         .set_noack_map = ieee80211_set_noack_map,
3202 #ifdef CONFIG_PM
3203         .set_wakeup = ieee80211_set_wakeup,
3204 #endif
3205         .get_et_sset_count = ieee80211_get_et_sset_count,
3206         .get_et_stats = ieee80211_get_et_stats,
3207         .get_et_strings = ieee80211_get_et_strings,
3208         .get_channel = ieee80211_cfg_get_channel,
3209 };