net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  *
   6  * This file is GPLv2 as found in COPYING.
   7  */
   8
   9 #include <linux/ieee80211.h>
  10 #include <linux/nl80211.h>
  11 #include <linux/rtnetlink.h>
  12 #include <linux/slab.h>
  13 #include <net/net_namespace.h>
  14 #include <linux/rcupdate.h>
  15 #include <linux/if_ether.h>
  16 #include <net/cfg80211.h>
  17 #include "ieee80211_i.h"
  18 #include "driver-ops.h"
  19 #include "cfg.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22
  23 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  24                                                 const char *name,
  25                                                 enum nl80211_iftype type,
  26                                                 u32 *flags,
  27                                                 struct vif_params *params)
  28 {
  29         struct ieee80211_local *local = wiphy_priv(wiphy);
  30         struct wireless_dev *wdev;
  31         struct ieee80211_sub_if_data *sdata;
  32         int err;
  33
  34         err = ieee80211_if_add(local, name, &wdev, type, params);
  35         if (err)
  36                 return ERR_PTR(err);
  37
  38         if (type == NL80211_IFTYPE_MONITOR && flags) {
  39                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  40                 sdata->u.mntr_flags = *flags;
  41         }
  42
  43         return wdev;
  44 }
  45
  46 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  47 {
  48         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  49
  50         return 0;
  51 }
  52
  53 static int ieee80211_change_iface(struct wiphy *wiphy,
  54                                   struct net_device *dev,
  55                                   enum nl80211_iftype type, u32 *flags,
  56                                   struct vif_params *params)
  57 {
  58         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  59         int ret;
  60
  61         ret = ieee80211_if_change_type(sdata, type);
  62         if (ret)
  63                 return ret;
  64
  65         if (type == NL80211_IFTYPE_AP_VLAN &&
  66             params && params->use_4addr == 0)
  67                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  68         else if (type == NL80211_IFTYPE_STATION &&
  69                  params && params->use_4addr >= 0)
  70                 sdata->u.mgd.use_4addr = params->use_4addr;
  71
  72         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  73                 struct ieee80211_local *local = sdata->local;
  74
  75                 if (ieee80211_sdata_running(sdata)) {
  76                         /*
  77                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  78                          * changed while the interface is up.
  79                          * Else we would need to add a lot of cruft
  80                          * to update everything:
  81                          *      cooked_mntrs, monitor and all fif_* counters
  82                          *      reconfigure hardware
  83                          */
  84                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  85                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  86                                 return -EBUSY;
  87
  88                         ieee80211_adjust_monitor_flags(sdata, -1);
  89                         sdata->u.mntr_flags = *flags;
  90                         ieee80211_adjust_monitor_flags(sdata, 1);
  91
  92                         ieee80211_configure_filter(local);
  93                 } else {
  94                         /*
  95                          * Because the interface is down, ieee80211_do_stop
  96                          * and ieee80211_do_open take care of "everything"
  97                          * mentioned in the comment above.
  98                          */
  99                         sdata->u.mntr_flags = *flags;
 100                 }
 101         }
 102
 103         return 0;
 104 }
 105
 106 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 107                                       struct wireless_dev *wdev)
 108 {
 109         return ieee80211_do_open(wdev, true);
 110 }
 111
 112 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 113                                       struct wireless_dev *wdev)
 114 {
 115         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 116 }
 117
 118 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 119                                   struct net_device *dev,
 120                                   u16 noack_map)
 121 {
 122         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 123
 124         sdata->noack_map = noack_map;
 125         return 0;
 126 }
 127
 128 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 129                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 130                              struct key_params *params)
 131 {
 132         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 133         struct sta_info *sta = NULL;
 134         struct ieee80211_key *key;
 135         int err;
 136
 137         if (!ieee80211_sdata_running(sdata))
 138                 return -ENETDOWN;
 139
 140         /* reject WEP and TKIP keys if WEP failed to initialize */
 141         switch (params->cipher) {
 142         case WLAN_CIPHER_SUITE_WEP40:
 143         case WLAN_CIPHER_SUITE_TKIP:
 144         case WLAN_CIPHER_SUITE_WEP104:
 145                 if (IS_ERR(sdata->local->wep_tx_tfm))
 146                         return -EINVAL;
 147                 break;
 148         default:
 149                 break;
 150         }
 151
 152         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 153                                   params->key, params->seq_len, params->seq);
 154         if (IS_ERR(key))
 155                 return PTR_ERR(key);
 156
 157         if (pairwise)
 158                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 159
 160         mutex_lock(&sdata->local->sta_mtx);
 161
 162         if (mac_addr) {
 163                 if (ieee80211_vif_is_mesh(&sdata->vif))
 164                         sta = sta_info_get(sdata, mac_addr);
 165                 else
 166                         sta = sta_info_get_bss(sdata, mac_addr);
 167                 if (!sta) {
 168                         ieee80211_key_free(sdata->local, key);
 169                         err = -ENOENT;
 170                         goto out_unlock;
 171                 }
 172         }
 173
 174         switch (sdata->vif.type) {
 175         case NL80211_IFTYPE_STATION:
 176                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 177                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 178                 break;
 179         case NL80211_IFTYPE_AP:
 180         case NL80211_IFTYPE_AP_VLAN:
 181                 /* Keys without a station are used for TX only */
 182                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 183                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 184                 break;
 185         case NL80211_IFTYPE_ADHOC:
 186                 /* no MFP (yet) */
 187                 break;
 188         case NL80211_IFTYPE_MESH_POINT:
 189 #ifdef CONFIG_MAC80211_MESH
 190                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 191                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 192                 break;
 193 #endif
 194         case NL80211_IFTYPE_WDS:
 195         case NL80211_IFTYPE_MONITOR:
 196         case NL80211_IFTYPE_P2P_DEVICE:
 197         case NL80211_IFTYPE_UNSPECIFIED:
 198         case NUM_NL80211_IFTYPES:
 199         case NL80211_IFTYPE_P2P_CLIENT:
 200         case NL80211_IFTYPE_P2P_GO:
 201                 /* shouldn't happen */
 202                 WARN_ON_ONCE(1);
 203                 break;
 204         }
 205
 206         err = ieee80211_key_link(key, sdata, sta);
 207         if (err)
 208                 ieee80211_key_free(sdata->local, key);
 209
 210  out_unlock:
 211         mutex_unlock(&sdata->local->sta_mtx);
 212
 213         return err;
 214 }
 215
 216 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 217                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 218 {
 219         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 220         struct ieee80211_local *local = sdata->local;
 221         struct sta_info *sta;
 222         struct ieee80211_key *key = NULL;
 223         int ret;
 224
 225         mutex_lock(&local->sta_mtx);
 226         mutex_lock(&local->key_mtx);
 227
 228         if (mac_addr) {
 229                 ret = -ENOENT;
 230
 231                 sta = sta_info_get_bss(sdata, mac_addr);
 232                 if (!sta)
 233                         goto out_unlock;
 234
 235                 if (pairwise)
 236                         key = key_mtx_dereference(local, sta->ptk);
 237                 else
 238                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 239         } else
 240                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 241
 242         if (!key) {
 243                 ret = -ENOENT;
 244                 goto out_unlock;
 245         }
 246
 247         __ieee80211_key_free(key);
 248
 249         ret = 0;
 250  out_unlock:
 251         mutex_unlock(&local->key_mtx);
 252         mutex_unlock(&local->sta_mtx);
 253
 254         return ret;
 255 }
 256
 257 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 258                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 259                              void *cookie,
 260                              void (*callback)(void *cookie,
 261                                               struct key_params *params))
 262 {
 263         struct ieee80211_sub_if_data *sdata;
 264         struct sta_info *sta = NULL;
 265         u8 seq[6] = {0};
 266         struct key_params params;
 267         struct ieee80211_key *key = NULL;
 268         u64 pn64;
 269         u32 iv32;
 270         u16 iv16;
 271         int err = -ENOENT;
 272
 273         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 274
 275         rcu_read_lock();
 276
 277         if (mac_addr) {
 278                 sta = sta_info_get_bss(sdata, mac_addr);
 279                 if (!sta)
 280                         goto out;
 281
 282                 if (pairwise)
 283                         key = rcu_dereference(sta->ptk);
 284                 else if (key_idx < NUM_DEFAULT_KEYS)
 285                         key = rcu_dereference(sta->gtk[key_idx]);
 286         } else
 287                 key = rcu_dereference(sdata->keys[key_idx]);
 288
 289         if (!key)
 290                 goto out;
 291
 292         memset(&params, 0, sizeof(params));
 293
 294         params.cipher = key->conf.cipher;
 295
 296         switch (key->conf.cipher) {
 297         case WLAN_CIPHER_SUITE_TKIP:
 298                 iv32 = key->u.tkip.tx.iv32;
 299                 iv16 = key->u.tkip.tx.iv16;
 300
 301                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 302                         drv_get_tkip_seq(sdata->local,
 303                                          key->conf.hw_key_idx,
 304                                          &iv32, &iv16);
 305
 306                 seq[0] = iv16 & 0xff;
 307                 seq[1] = (iv16 >> 8) & 0xff;
 308                 seq[2] = iv32 & 0xff;
 309                 seq[3] = (iv32 >> 8) & 0xff;
 310                 seq[4] = (iv32 >> 16) & 0xff;
 311                 seq[5] = (iv32 >> 24) & 0xff;
 312                 params.seq = seq;
 313                 params.seq_len = 6;
 314                 break;
 315         case WLAN_CIPHER_SUITE_CCMP:
 316                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 317                 seq[0] = pn64;
 318                 seq[1] = pn64 >> 8;
 319                 seq[2] = pn64 >> 16;
 320                 seq[3] = pn64 >> 24;
 321                 seq[4] = pn64 >> 32;
 322                 seq[5] = pn64 >> 40;
 323                 params.seq = seq;
 324                 params.seq_len = 6;
 325                 break;
 326         case WLAN_CIPHER_SUITE_AES_CMAC:
 327                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 328                 seq[0] = pn64;
 329                 seq[1] = pn64 >> 8;
 330                 seq[2] = pn64 >> 16;
 331                 seq[3] = pn64 >> 24;
 332                 seq[4] = pn64 >> 32;
 333                 seq[5] = pn64 >> 40;
 334                 params.seq = seq;
 335                 params.seq_len = 6;
 336                 break;
 337         }
 338
 339         params.key = key->conf.key;
 340         params.key_len = key->conf.keylen;
 341
 342         callback(cookie, &params);
 343         err = 0;
 344
 345  out:
 346         rcu_read_unlock();
 347         return err;
 348 }
 349
 350 static int ieee80211_config_default_key(struct wiphy *wiphy,
 351                                         struct net_device *dev,
 352                                         u8 key_idx, bool uni,
 353                                         bool multi)
 354 {
 355         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 356
 357         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 358
 359         return 0;
 360 }
 361
 362 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 363                                              struct net_device *dev,
 364                                              u8 key_idx)
 365 {
 366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 367
 368         ieee80211_set_default_mgmt_key(sdata, key_idx);
 369
 370         return 0;
 371 }
 372
 373 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 374 {
 375         enum ieee80211_band band = ieee80211_get_sdata_band(sta->sdata);
 376
 377         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 378                 struct ieee80211_supported_band *sband;
 379                 sband = sta->local->hw.wiphy->bands[band];
 380                 rate->legacy = sband->bitrates[idx].bitrate;
 381         } else
 382                 rate->mcs = idx;
 383 }
 384
 385 void sta_set_rate_info_tx(struct sta_info *sta,
 386                           const struct ieee80211_tx_rate *rate,
 387                           struct rate_info *rinfo)
 388 {
 389         rinfo->flags = 0;
 390         if (rate->flags & IEEE80211_TX_RC_MCS)
 391                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 392         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 393                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 394         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 395                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 396         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 397 }
 398
 399 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 400 {
 401         struct ieee80211_sub_if_data *sdata = sta->sdata;
 402         struct ieee80211_local *local = sdata->local;
 403         struct timespec uptime;
 404
 405         sinfo->generation = sdata->local->sta_generation;
 406
 407         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 408                         STATION_INFO_RX_BYTES |
 409                         STATION_INFO_TX_BYTES |
 410                         STATION_INFO_RX_PACKETS |
 411                         STATION_INFO_TX_PACKETS |
 412                         STATION_INFO_TX_RETRIES |
 413                         STATION_INFO_TX_FAILED |
 414                         STATION_INFO_TX_BITRATE |
 415                         STATION_INFO_RX_BITRATE |
 416                         STATION_INFO_RX_DROP_MISC |
 417                         STATION_INFO_BSS_PARAM |
 418                         STATION_INFO_CONNECTED_TIME |
 419                         STATION_INFO_STA_FLAGS |
 420                         STATION_INFO_BEACON_LOSS_COUNT;
 421
 422         do_posix_clock_monotonic_gettime(&uptime);
 423         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 424
 425         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 426         sinfo->rx_bytes = sta->rx_bytes;
 427         sinfo->tx_bytes = sta->tx_bytes;
 428         sinfo->rx_packets = sta->rx_packets;
 429         sinfo->tx_packets = sta->tx_packets;
 430         sinfo->tx_retries = sta->tx_retry_count;
 431         sinfo->tx_failed = sta->tx_retry_failed;
 432         sinfo->rx_dropped_misc = sta->rx_dropped;
 433         sinfo->beacon_loss_count = sta->beacon_loss_count;
 434
 435         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 436             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 437                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 438                 if (!local->ops->get_rssi ||
 439                     drv_get_rssi(local, sdata, &sta->sta, &sinfo->signal))
 440                         sinfo->signal = (s8)sta->last_signal;
 441                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 442         }
 443
 444         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 445
 446         sinfo->rxrate.flags = 0;
 447         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 448                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 449         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 450                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 451         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 452                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 453         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 454
 455         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 456 #ifdef CONFIG_MAC80211_MESH
 457                 sinfo->filled |= STATION_INFO_LLID |
 458                                  STATION_INFO_PLID |
 459                                  STATION_INFO_PLINK_STATE;
 460
 461                 sinfo->llid = le16_to_cpu(sta->llid);
 462                 sinfo->plid = le16_to_cpu(sta->plid);
 463                 sinfo->plink_state = sta->plink_state;
 464                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 465                         sinfo->filled |= STATION_INFO_T_OFFSET;
 466                         sinfo->t_offset = sta->t_offset;
 467                 }
 468 #endif
 469         }
 470
 471         sinfo->bss_param.flags = 0;
 472         if (sdata->vif.bss_conf.use_cts_prot)
 473                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 474         if (sdata->vif.bss_conf.use_short_preamble)
 475                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 476         if (sdata->vif.bss_conf.use_short_slot)
 477                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 478         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 479         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 480
 481         sinfo->sta_flags.set = 0;
 482         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 483                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 484                                 BIT(NL80211_STA_FLAG_WME) |
 485                                 BIT(NL80211_STA_FLAG_MFP) |
 486                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 487                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 488         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 489                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 490         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 491                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 492         if (test_sta_flag(sta, WLAN_STA_WME))
 493                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 494         if (test_sta_flag(sta, WLAN_STA_MFP))
 495                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 496         if (test_sta_flag(sta, WLAN_STA_AUTH))
 497                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 498         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 499                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 500 }
 501
 502 static const char ieee80211_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
 503         "rx_packets", "rx_bytes", "wep_weak_iv_count",
 504         "rx_duplicates", "rx_fragments", "rx_dropped",
 505         "tx_packets", "tx_bytes", "tx_fragments",
 506         "tx_filtered", "tx_retry_failed", "tx_retries",
 507         "beacon_loss", "sta_state", "txrate", "rxrate", "signal",
 508         "channel", "noise", "ch_time", "ch_time_busy",
 509         "ch_time_ext_busy", "ch_time_rx", "ch_time_tx"
 510 };
 511 #define STA_STATS_LEN   ARRAY_SIZE(ieee80211_gstrings_sta_stats)
 512
 513 static int ieee80211_get_et_sset_count(struct wiphy *wiphy,
 514                                        struct net_device *dev,
 515                                        int sset)
 516 {
 517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 518         int rv = 0;
 519
 520         if (sset == ETH_SS_STATS)
 521                 rv += STA_STATS_LEN;
 522
 523         rv += drv_get_et_sset_count(sdata, sset);
 524
 525         if (rv == 0)
 526                 return -EOPNOTSUPP;
 527         return rv;
 528 }
 529
 530 static void ieee80211_get_et_stats(struct wiphy *wiphy,
 531                                    struct net_device *dev,
 532                                    struct ethtool_stats *stats,
 533                                    u64 *data)
 534 {
 535         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 536         struct ieee80211_chanctx_conf *chanctx_conf;
 537         struct ieee80211_channel *channel;
 538         struct sta_info *sta;
 539         struct ieee80211_local *local = sdata->local;
 540         struct station_info sinfo;
 541         struct survey_info survey;
 542         int i, q;
 543 #define STA_STATS_SURVEY_LEN 7
 544
 545         memset(data, 0, sizeof(u64) * STA_STATS_LEN);
 546
 547 #define ADD_STA_STATS(sta)                              \
 548         do {                                            \
 549                 data[i++] += sta->rx_packets;           \
 550                 data[i++] += sta->rx_bytes;             \
 551                 data[i++] += sta->wep_weak_iv_count;    \
 552                 data[i++] += sta->num_duplicates;       \
 553                 data[i++] += sta->rx_fragments;         \
 554                 data[i++] += sta->rx_dropped;           \
 555                                                         \
 556                 data[i++] += sta->tx_packets;           \
 557                 data[i++] += sta->tx_bytes;             \
 558                 data[i++] += sta->tx_fragments;         \
 559                 data[i++] += sta->tx_filtered_count;    \
 560                 data[i++] += sta->tx_retry_failed;      \
 561                 data[i++] += sta->tx_retry_count;       \
 562                 data[i++] += sta->beacon_loss_count;    \
 563         } while (0)
 564
 565         /* For Managed stations, find the single station based on BSSID
 566          * and use that.  For interface types, iterate through all available
 567          * stations and add stats for any station that is assigned to this
 568          * network device.
 569          */
 570
 571         mutex_lock(&local->sta_mtx);
 572
 573         if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 574                 sta = sta_info_get_bss(sdata, sdata->u.mgd.bssid);
 575
 576                 if (!(sta && !WARN_ON(sta->sdata->dev != dev)))
 577                         goto do_survey;
 578
 579                 i = 0;
 580                 ADD_STA_STATS(sta);
 581
 582                 data[i++] = sta->sta_state;
 583
 584                 sinfo.filled = 0;
 585                 sta_set_sinfo(sta, &sinfo);
 586
 587                 if (sinfo.filled & STATION_INFO_TX_BITRATE)
 588                         data[i] = 100000 *
 589                                 cfg80211_calculate_bitrate(&sinfo.txrate);
 590                 i++;
 591                 if (sinfo.filled & STATION_INFO_RX_BITRATE)
 592                         data[i] = 100000 *
 593                                 cfg80211_calculate_bitrate(&sinfo.rxrate);
 594                 i++;
 595
 596                 if (sinfo.filled & STATION_INFO_SIGNAL_AVG)
 597                         data[i] = (u8)sinfo.signal_avg;
 598                 i++;
 599         } else {
 600                 list_for_each_entry(sta, &local->sta_list, list) {
 601                         /* Make sure this station belongs to the proper dev */
 602                         if (sta->sdata->dev != dev)
 603                                 continue;
 604
 605                         i = 0;
 606                         ADD_STA_STATS(sta);
 607                 }
 608         }
 609
 610 do_survey:
 611         i = STA_STATS_LEN - STA_STATS_SURVEY_LEN;
 612         /* Get survey stats for current channel */
 613         survey.filled = 0;
 614
 615         rcu_read_lock();
 616         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
 617         if (chanctx_conf)
 618                 channel = chanctx_conf->channel;
 619         else
 620                 channel = NULL;
 621         rcu_read_unlock();
 622
 623         if (channel) {
 624                 q = 0;
 625                 do {
 626                         survey.filled = 0;
 627                         if (drv_get_survey(local, q, &survey) != 0) {
 628                                 survey.filled = 0;
 629                                 break;
 630                         }
 631                         q++;
 632                 } while (channel != survey.channel);
 633         }
 634
 635         if (survey.filled)
 636                 data[i++] = survey.channel->center_freq;
 637         else
 638                 data[i++] = 0;
 639         if (survey.filled & SURVEY_INFO_NOISE_DBM)
 640                 data[i++] = (u8)survey.noise;
 641         else
 642                 data[i++] = -1LL;
 643         if (survey.filled & SURVEY_INFO_CHANNEL_TIME)
 644                 data[i++] = survey.channel_time;
 645         else
 646                 data[i++] = -1LL;
 647         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_BUSY)
 648                 data[i++] = survey.channel_time_busy;
 649         else
 650                 data[i++] = -1LL;
 651         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY)
 652                 data[i++] = survey.channel_time_ext_busy;
 653         else
 654                 data[i++] = -1LL;
 655         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_RX)
 656                 data[i++] = survey.channel_time_rx;
 657         else
 658                 data[i++] = -1LL;
 659         if (survey.filled & SURVEY_INFO_CHANNEL_TIME_TX)
 660                 data[i++] = survey.channel_time_tx;
 661         else
 662                 data[i++] = -1LL;
 663
 664         mutex_unlock(&local->sta_mtx);
 665
 666         if (WARN_ON(i != STA_STATS_LEN))
 667                 return;
 668
 669         drv_get_et_stats(sdata, stats, &(data[STA_STATS_LEN]));
 670 }
 671
 672 static void ieee80211_get_et_strings(struct wiphy *wiphy,
 673                                      struct net_device *dev,
 674                                      u32 sset, u8 *data)
 675 {
 676         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 677         int sz_sta_stats = 0;
 678
 679         if (sset == ETH_SS_STATS) {
 680                 sz_sta_stats = sizeof(ieee80211_gstrings_sta_stats);
 681                 memcpy(data, *ieee80211_gstrings_sta_stats, sz_sta_stats);
 682         }
 683         drv_get_et_strings(sdata, sset, &(data[sz_sta_stats]));
 684 }
 685
 686 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 687                                  int idx, u8 *mac, struct station_info *sinfo)
 688 {
 689         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 690         struct ieee80211_local *local = sdata->local;
 691         struct sta_info *sta;
 692         int ret = -ENOENT;
 693
 694         mutex_lock(&local->sta_mtx);
 695
 696         sta = sta_info_get_by_idx(sdata, idx);
 697         if (sta) {
 698                 ret = 0;
 699                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 700                 sta_set_sinfo(sta, sinfo);
 701         }
 702
 703         mutex_unlock(&local->sta_mtx);
 704
 705         return ret;
 706 }
 707
 708 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 709                                  int idx, struct survey_info *survey)
 710 {
 711         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 712
 713         return drv_get_survey(local, idx, survey);
 714 }
 715
 716 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 717                                  u8 *mac, struct station_info *sinfo)
 718 {
 719         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 720         struct ieee80211_local *local = sdata->local;
 721         struct sta_info *sta;
 722         int ret = -ENOENT;
 723
 724         mutex_lock(&local->sta_mtx);
 725
 726         sta = sta_info_get_bss(sdata, mac);
 727         if (sta) {
 728                 ret = 0;
 729                 sta_set_sinfo(sta, sinfo);
 730         }
 731
 732         mutex_unlock(&local->sta_mtx);
 733
 734         return ret;
 735 }
 736
 737 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 738                                          struct ieee80211_channel *chan,
 739                                          enum nl80211_channel_type channel_type)
 740 {
 741         struct ieee80211_local *local = wiphy_priv(wiphy);
 742         struct ieee80211_sub_if_data *sdata;
 743         int ret = 0;
 744
 745         if (local->monitor_channel == chan &&
 746             local->monitor_channel_type == channel_type)
 747                 return 0;
 748
 749         mutex_lock(&local->iflist_mtx);
 750         if (local->use_chanctx) {
 751                 sdata = rcu_dereference_protected(
 752                                 local->monitor_sdata,
 753                                 lockdep_is_held(&local->iflist_mtx));
 754                 if (sdata) {
 755                         ieee80211_vif_release_channel(sdata);
 756                         ret = ieee80211_vif_use_channel(
 757                                         sdata, chan, channel_type,
 758                                         IEEE80211_CHANCTX_EXCLUSIVE);
 759                 }
 760         } else if (local->open_count == local->monitors) {
 761                 local->_oper_channel = chan;
 762                 local->_oper_channel_type = channel_type;
 763                 ieee80211_hw_config(local, 0);
 764         }
 765
 766         if (ret == 0) {
 767                 local->monitor_channel = chan;
 768                 local->monitor_channel_type = channel_type;
 769         }
 770         mutex_unlock(&local->iflist_mtx);
 771
 772         return ret;
 773 }
 774
 775 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 776                                     const u8 *resp, size_t resp_len)
 777 {
 778         struct probe_resp *new, *old;
 779
 780         if (!resp || !resp_len)
 781                 return 1;
 782
 783         old = rtnl_dereference(sdata->u.ap.probe_resp);
 784
 785         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 786         if (!new)
 787                 return -ENOMEM;
 788
 789         new->len = resp_len;
 790         memcpy(new->data, resp, resp_len);
 791
 792         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 793         if (old)
 794                 kfree_rcu(old, rcu_head);
 795
 796         return 0;
 797 }
 798
 799 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 800                                    struct cfg80211_beacon_data *params)
 801 {
 802         struct beacon_data *new, *old;
 803         int new_head_len, new_tail_len;
 804         int size, err;
 805         u32 changed = BSS_CHANGED_BEACON;
 806
 807         old = rtnl_dereference(sdata->u.ap.beacon);
 808
 809         /* Need to have a beacon head if we don't have one yet */
 810         if (!params->head && !old)
 811                 return -EINVAL;
 812
 813         /* new or old head? */
 814         if (params->head)
 815                 new_head_len = params->head_len;
 816         else
 817                 new_head_len = old->head_len;
 818
 819         /* new or old tail? */
 820         if (params->tail || !old)
 821                 /* params->tail_len will be zero for !params->tail */
 822                 new_tail_len = params->tail_len;
 823         else
 824                 new_tail_len = old->tail_len;
 825
 826         size = sizeof(*new) + new_head_len + new_tail_len;
 827
 828         new = kzalloc(size, GFP_KERNEL);
 829         if (!new)
 830                 return -ENOMEM;
 831
 832         /* start filling the new info now */
 833
 834         /*
 835          * pointers go into the block we allocated,
 836          * memory is | beacon_data | head | tail |
 837          */
 838         new->head = ((u8 *) new) + sizeof(*new);
 839         new->tail = new->head + new_head_len;
 840         new->head_len = new_head_len;
 841         new->tail_len = new_tail_len;
 842
 843         /* copy in head */
 844         if (params->head)
 845                 memcpy(new->head, params->head, new_head_len);
 846         else
 847                 memcpy(new->head, old->head, new_head_len);
 848
 849         /* copy in optional tail */
 850         if (params->tail)
 851                 memcpy(new->tail, params->tail, new_tail_len);
 852         else
 853                 if (old)
 854                         memcpy(new->tail, old->tail, new_tail_len);
 855
 856         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 857                                        params->probe_resp_len);
 858         if (err < 0)
 859                 return err;
 860         if (err == 0)
 861                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 862
 863         rcu_assign_pointer(sdata->u.ap.beacon, new);
 864
 865         if (old)
 866                 kfree_rcu(old, rcu_head);
 867
 868         return changed;
 869 }
 870
 871 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 872                               struct cfg80211_ap_settings *params)
 873 {
 874         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 875         struct beacon_data *old;
 876         struct ieee80211_sub_if_data *vlan;
 877         u32 changed = BSS_CHANGED_BEACON_INT |
 878                       BSS_CHANGED_BEACON_ENABLED |
 879                       BSS_CHANGED_BEACON |
 880                       BSS_CHANGED_SSID;
 881         int err;
 882
 883         old = rtnl_dereference(sdata->u.ap.beacon);
 884         if (old)
 885                 return -EALREADY;
 886
 887         /* TODO: make hostapd tell us what it wants */
 888         sdata->smps_mode = IEEE80211_SMPS_OFF;
 889         sdata->needed_rx_chains = sdata->local->rx_chains;
 890
 891         err = ieee80211_vif_use_channel(sdata, params->channel,
 892                                         params->channel_type,
 893                                         IEEE80211_CHANCTX_SHARED);
 894         if (err)
 895                 return err;
 896
 897         /*
 898          * Apply control port protocol, this allows us to
 899          * not encrypt dynamic WEP control frames.
 900          */
 901         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 902         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 903         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 904                 vlan->control_port_protocol =
 905                         params->crypto.control_port_ethertype;
 906                 vlan->control_port_no_encrypt =
 907                         params->crypto.control_port_no_encrypt;
 908         }
 909
 910         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 911         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 912
 913         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 914         if (params->ssid_len)
 915                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 916                        params->ssid_len);
 917         sdata->vif.bss_conf.hidden_ssid =
 918                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 919
 920         err = ieee80211_assign_beacon(sdata, &params->beacon);
 921         if (err < 0)
 922                 return err;
 923         changed |= err;
 924
 925         err = drv_start_ap(sdata->local, sdata);
 926         if (err) {
 927                 old = rtnl_dereference(sdata->u.ap.beacon);
 928                 if (old)
 929                         kfree_rcu(old, rcu_head);
 930                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 931                 return err;
 932         }
 933
 934         ieee80211_bss_info_change_notify(sdata, changed);
 935
 936         netif_carrier_on(dev);
 937         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 938                 netif_carrier_on(vlan->dev);
 939
 940         return 0;
 941 }
 942
 943 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 944                                    struct cfg80211_beacon_data *params)
 945 {
 946         struct ieee80211_sub_if_data *sdata;
 947         struct beacon_data *old;
 948         int err;
 949
 950         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 951
 952         old = rtnl_dereference(sdata->u.ap.beacon);
 953         if (!old)
 954                 return -ENOENT;
 955
 956         err = ieee80211_assign_beacon(sdata, params);
 957         if (err < 0)
 958                 return err;
 959         ieee80211_bss_info_change_notify(sdata, err);
 960         return 0;
 961 }
 962
 963 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 964 {
 965         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 966         struct ieee80211_sub_if_data *vlan;
 967         struct ieee80211_local *local = sdata->local;
 968         struct beacon_data *old_beacon;
 969         struct probe_resp *old_probe_resp;
 970
 971         old_beacon = rtnl_dereference(sdata->u.ap.beacon);
 972         if (!old_beacon)
 973                 return -ENOENT;
 974         old_probe_resp = rtnl_dereference(sdata->u.ap.probe_resp);
 975
 976         /* turn off carrier for this interface and dependent VLANs */
 977         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 978                 netif_carrier_off(vlan->dev);
 979         netif_carrier_off(dev);
 980
 981         /* remove beacon and probe response */
 982         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 983         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 984         kfree_rcu(old_beacon, rcu_head);
 985         if (old_probe_resp)
 986                 kfree_rcu(old_probe_resp, rcu_head);
 987
 988         sta_info_flush(local, sdata);
 989         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 990
 991         drv_stop_ap(sdata->local, sdata);
 992
 993         /* free all potentially still buffered bcast frames */
 994         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 995         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 996
 997         ieee80211_vif_release_channel(sdata);
 998
 999         return 0;
1000 }
1001
1002 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1003 struct iapp_layer2_update {
1004         u8 da[ETH_ALEN];        /* broadcast */
1005         u8 sa[ETH_ALEN];        /* STA addr */
1006         __be16 len;             /* 6 */
1007         u8 dsap;                /* 0 */
1008         u8 ssap;                /* 0 */
1009         u8 control;
1010         u8 xid_info[3];
1011 } __packed;
1012
1013 static void ieee80211_send_layer2_update(struct sta_info *sta)
1014 {
1015         struct iapp_layer2_update *msg;
1016         struct sk_buff *skb;
1017
1018         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1019          * bridge devices */
1020
1021         skb = dev_alloc_skb(sizeof(*msg));
1022         if (!skb)
1023                 return;
1024         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
1025
1026         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1027          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1028
1029         eth_broadcast_addr(msg->da);
1030         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1031         msg->len = htons(6);
1032         msg->dsap = 0;
1033         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1034         msg->control = 0xaf;    /* XID response lsb.1111F101.
1035                                  * F=0 (no poll command; unsolicited frame) */
1036         msg->xid_info[0] = 0x81;        /* XID format identifier */
1037         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1038         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1039
1040         skb->dev = sta->sdata->dev;
1041         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1042         memset(skb->cb, 0, sizeof(skb->cb));
1043         netif_rx_ni(skb);
1044 }
1045
1046 static int sta_apply_parameters(struct ieee80211_local *local,
1047                                 struct sta_info *sta,
1048                                 struct station_parameters *params)
1049 {
1050         int ret = 0;
1051         u32 rates;
1052         int i, j;
1053         struct ieee80211_supported_band *sband;
1054         struct ieee80211_sub_if_data *sdata = sta->sdata;
1055         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
1056         u32 mask, set;
1057
1058         sband = local->hw.wiphy->bands[band];
1059
1060         mask = params->sta_flags_mask;
1061         set = params->sta_flags_set;
1062
1063         /*
1064          * In mesh mode, we can clear AUTHENTICATED flag but must
1065          * also make ASSOCIATED follow appropriately for the driver
1066          * API. See also below, after AUTHORIZED changes.
1067          */
1068         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1069                 /* cfg80211 should not allow this in non-mesh modes */
1070                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1071                         return -EINVAL;
1072
1073                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1074                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
1075                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1076                         if (ret)
1077                                 return ret;
1078                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1079                         if (ret)
1080                                 return ret;
1081                 }
1082         }
1083
1084         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1085                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1086                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1087                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1088                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1089                 if (ret)
1090                         return ret;
1091         }
1092
1093         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
1094                 /* cfg80211 should not allow this in non-mesh modes */
1095                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
1096                         return -EINVAL;
1097
1098                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1099                     test_sta_flag(sta, WLAN_STA_AUTH)) {
1100                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1101                         if (ret)
1102                                 return ret;
1103                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1104                         if (ret)
1105                                 return ret;
1106                 }
1107         }
1108
1109
1110         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1111                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1112                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1113                 else
1114                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1115         }
1116
1117         if (mask & BIT(NL80211_STA_FLAG_WME)) {
1118                 if (set & BIT(NL80211_STA_FLAG_WME)) {
1119                         set_sta_flag(sta, WLAN_STA_WME);
1120                         sta->sta.wme = true;
1121                 } else {
1122                         clear_sta_flag(sta, WLAN_STA_WME);
1123                         sta->sta.wme = false;
1124                 }
1125         }
1126
1127         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1128                 if (set & BIT(NL80211_STA_FLAG_MFP))
1129                         set_sta_flag(sta, WLAN_STA_MFP);
1130                 else
1131                         clear_sta_flag(sta, WLAN_STA_MFP);
1132         }
1133
1134         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1135                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1136                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1137                 else
1138                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1139         }
1140
1141         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1142                 sta->sta.uapsd_queues = params->uapsd_queues;
1143                 sta->sta.max_sp = params->max_sp;
1144         }
1145
1146         /*
1147          * cfg80211 validates this (1-2007) and allows setting the AID
1148          * only when creating a new station entry
1149          */
1150         if (params->aid)
1151                 sta->sta.aid = params->aid;
1152
1153         /*
1154          * FIXME: updating the following information is racy when this
1155          *        function is called from ieee80211_change_station().
1156          *        However, all this information should be static so
1157          *        maybe we should just reject attemps to change it.
1158          */
1159
1160         if (params->listen_interval >= 0)
1161                 sta->listen_interval = params->listen_interval;
1162
1163         if (params->supported_rates) {
1164                 rates = 0;
1165
1166                 for (i = 0; i < params->supported_rates_len; i++) {
1167                         int rate = (params->supported_rates[i] & 0x7f) * 5;
1168                         for (j = 0; j < sband->n_bitrates; j++) {
1169                                 if (sband->bitrates[j].bitrate == rate)
1170                                         rates |= BIT(j);
1171                         }
1172                 }
1173                 sta->sta.supp_rates[band] = rates;
1174         }
1175
1176         if (params->ht_capa)
1177                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1178                                                   params->ht_capa,
1179                                                   &sta->sta.ht_cap);
1180
1181         if (params->vht_capa)
1182                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1183                                                     params->vht_capa,
1184                                                     &sta->sta.vht_cap);
1185
1186         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1187 #ifdef CONFIG_MAC80211_MESH
1188                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
1189                         switch (params->plink_state) {
1190                         case NL80211_PLINK_LISTEN:
1191                         case NL80211_PLINK_ESTAB:
1192                         case NL80211_PLINK_BLOCKED:
1193                                 sta->plink_state = params->plink_state;
1194                                 break;
1195                         default:
1196                                 /*  nothing  */
1197                                 break;
1198                         }
1199                 else
1200                         switch (params->plink_action) {
1201                         case PLINK_ACTION_OPEN:
1202                                 mesh_plink_open(sta);
1203                                 break;
1204                         case PLINK_ACTION_BLOCK:
1205                                 mesh_plink_block(sta);
1206                                 break;
1207                         }
1208 #endif
1209         }
1210
1211         return 0;
1212 }
1213
1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1215                                  u8 *mac, struct station_parameters *params)
1216 {
1217         struct ieee80211_local *local = wiphy_priv(wiphy);
1218         struct sta_info *sta;
1219         struct ieee80211_sub_if_data *sdata;
1220         int err;
1221         int layer2_update;
1222
1223         if (params->vlan) {
1224                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1225
1226                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1227                     sdata->vif.type != NL80211_IFTYPE_AP)
1228                         return -EINVAL;
1229         } else
1230                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1231
1232         if (ether_addr_equal(mac, sdata->vif.addr))
1233                 return -EINVAL;
1234
1235         if (is_multicast_ether_addr(mac))
1236                 return -EINVAL;
1237
1238         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1239         if (!sta)
1240                 return -ENOMEM;
1241
1242         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
1243         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
1244
1245         err = sta_apply_parameters(local, sta, params);
1246         if (err) {
1247                 sta_info_free(local, sta);
1248                 return err;
1249         }
1250
1251         /*
1252          * for TDLS, rate control should be initialized only when supported
1253          * rates are known.
1254          */
1255         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
1256                 rate_control_rate_init(sta);
1257
1258         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1259                 sdata->vif.type == NL80211_IFTYPE_AP;
1260
1261         err = sta_info_insert_rcu(sta);
1262         if (err) {
1263                 rcu_read_unlock();
1264                 return err;
1265         }
1266
1267         if (layer2_update)
1268                 ieee80211_send_layer2_update(sta);
1269
1270         rcu_read_unlock();
1271
1272         return 0;
1273 }
1274
1275 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1276                                  u8 *mac)
1277 {
1278         struct ieee80211_local *local = wiphy_priv(wiphy);
1279         struct ieee80211_sub_if_data *sdata;
1280
1281         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1282
1283         if (mac)
1284                 return sta_info_destroy_addr_bss(sdata, mac);
1285
1286         sta_info_flush(local, sdata);
1287         return 0;
1288 }
1289
1290 static int ieee80211_change_station(struct wiphy *wiphy,
1291                                     struct net_device *dev,
1292                                     u8 *mac,
1293                                     struct station_parameters *params)
1294 {
1295         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1296         struct ieee80211_local *local = wiphy_priv(wiphy);
1297         struct sta_info *sta;
1298         struct ieee80211_sub_if_data *vlansdata;
1299         int err;
1300
1301         mutex_lock(&local->sta_mtx);
1302
1303         sta = sta_info_get_bss(sdata, mac);
1304         if (!sta) {
1305                 mutex_unlock(&local->sta_mtx);
1306                 return -ENOENT;
1307         }
1308
1309         /* in station mode, supported rates are only valid with TDLS */
1310         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1311             params->supported_rates &&
1312             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1313                 mutex_unlock(&local->sta_mtx);
1314                 return -EINVAL;
1315         }
1316
1317         if (params->vlan && params->vlan != sta->sdata->dev) {
1318                 bool prev_4addr = false;
1319                 bool new_4addr = false;
1320
1321                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1322
1323                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1324                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1325                         mutex_unlock(&local->sta_mtx);
1326                         return -EINVAL;
1327                 }
1328
1329                 if (params->vlan->ieee80211_ptr->use_4addr) {
1330                         if (vlansdata->u.vlan.sta) {
1331                                 mutex_unlock(&local->sta_mtx);
1332                                 return -EBUSY;
1333                         }
1334
1335                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1336                         new_4addr = true;
1337                 }
1338
1339                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1340                     sta->sdata->u.vlan.sta) {
1341                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1342                         prev_4addr = true;
1343                 }
1344
1345                 sta->sdata = vlansdata;
1346
1347                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1348                     prev_4addr != new_4addr) {
1349                         if (new_4addr)
1350                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1351                         else
1352                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1353                 }
1354
1355                 ieee80211_send_layer2_update(sta);
1356         }
1357
1358         err = sta_apply_parameters(local, sta, params);
1359         if (err) {
1360                 mutex_unlock(&local->sta_mtx);
1361                 return err;
1362         }
1363
1364         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1365                 rate_control_rate_init(sta);
1366
1367         mutex_unlock(&local->sta_mtx);
1368
1369         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1370             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1371                 ieee80211_recalc_ps(local, -1);
1372                 ieee80211_recalc_ps_vif(sdata);
1373         }
1374         return 0;
1375 }
1376
1377 #ifdef CONFIG_MAC80211_MESH
1378 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1379                                  u8 *dst, u8 *next_hop)
1380 {
1381         struct ieee80211_sub_if_data *sdata;
1382         struct mesh_path *mpath;
1383         struct sta_info *sta;
1384         int err;
1385
1386         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1387
1388         rcu_read_lock();
1389         sta = sta_info_get(sdata, next_hop);
1390         if (!sta) {
1391                 rcu_read_unlock();
1392                 return -ENOENT;
1393         }
1394
1395         err = mesh_path_add(dst, sdata);
1396         if (err) {
1397                 rcu_read_unlock();
1398                 return err;
1399         }
1400
1401         mpath = mesh_path_lookup(dst, sdata);
1402         if (!mpath) {
1403                 rcu_read_unlock();
1404                 return -ENXIO;
1405         }
1406         mesh_path_fix_nexthop(mpath, sta);
1407
1408         rcu_read_unlock();
1409         return 0;
1410 }
1411
1412 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1413                                  u8 *dst)
1414 {
1415         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1416
1417         if (dst)
1418                 return mesh_path_del(dst, sdata);
1419
1420         mesh_path_flush_by_iface(sdata);
1421         return 0;
1422 }
1423
1424 static int ieee80211_change_mpath(struct wiphy *wiphy,
1425                                     struct net_device *dev,
1426                                     u8 *dst, u8 *next_hop)
1427 {
1428         struct ieee80211_sub_if_data *sdata;
1429         struct mesh_path *mpath;
1430         struct sta_info *sta;
1431
1432         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1433
1434         rcu_read_lock();
1435
1436         sta = sta_info_get(sdata, next_hop);
1437         if (!sta) {
1438                 rcu_read_unlock();
1439                 return -ENOENT;
1440         }
1441
1442         mpath = mesh_path_lookup(dst, sdata);
1443         if (!mpath) {
1444                 rcu_read_unlock();
1445                 return -ENOENT;
1446         }
1447
1448         mesh_path_fix_nexthop(mpath, sta);
1449
1450         rcu_read_unlock();
1451         return 0;
1452 }
1453
1454 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1455                             struct mpath_info *pinfo)
1456 {
1457         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1458
1459         if (next_hop_sta)
1460                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1461         else
1462                 memset(next_hop, 0, ETH_ALEN);
1463
1464         memset(pinfo, 0, sizeof(*pinfo));
1465
1466         pinfo->generation = mesh_paths_generation;
1467
1468         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1469                         MPATH_INFO_SN |
1470                         MPATH_INFO_METRIC |
1471                         MPATH_INFO_EXPTIME |
1472                         MPATH_INFO_DISCOVERY_TIMEOUT |
1473                         MPATH_INFO_DISCOVERY_RETRIES |
1474                         MPATH_INFO_FLAGS;
1475
1476         pinfo->frame_qlen = mpath->frame_queue.qlen;
1477         pinfo->sn = mpath->sn;
1478         pinfo->metric = mpath->metric;
1479         if (time_before(jiffies, mpath->exp_time))
1480                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1481         pinfo->discovery_timeout =
1482                         jiffies_to_msecs(mpath->discovery_timeout);
1483         pinfo->discovery_retries = mpath->discovery_retries;
1484         if (mpath->flags & MESH_PATH_ACTIVE)
1485                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1486         if (mpath->flags & MESH_PATH_RESOLVING)
1487                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1488         if (mpath->flags & MESH_PATH_SN_VALID)
1489                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1490         if (mpath->flags & MESH_PATH_FIXED)
1491                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1492         if (mpath->flags & MESH_PATH_RESOLVED)
1493                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1494 }
1495
1496 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1497                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1498
1499 {
1500         struct ieee80211_sub_if_data *sdata;
1501         struct mesh_path *mpath;
1502
1503         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1504
1505         rcu_read_lock();
1506         mpath = mesh_path_lookup(dst, sdata);
1507         if (!mpath) {
1508                 rcu_read_unlock();
1509                 return -ENOENT;
1510         }
1511         memcpy(dst, mpath->dst, ETH_ALEN);
1512         mpath_set_pinfo(mpath, next_hop, pinfo);
1513         rcu_read_unlock();
1514         return 0;
1515 }
1516
1517 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1518                                  int idx, u8 *dst, u8 *next_hop,
1519                                  struct mpath_info *pinfo)
1520 {
1521         struct ieee80211_sub_if_data *sdata;
1522         struct mesh_path *mpath;
1523
1524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1525
1526         rcu_read_lock();
1527         mpath = mesh_path_lookup_by_idx(idx, sdata);
1528         if (!mpath) {
1529                 rcu_read_unlock();
1530                 return -ENOENT;
1531         }
1532         memcpy(dst, mpath->dst, ETH_ALEN);
1533         mpath_set_pinfo(mpath, next_hop, pinfo);
1534         rcu_read_unlock();
1535         return 0;
1536 }
1537
1538 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1539                                 struct net_device *dev,
1540                                 struct mesh_config *conf)
1541 {
1542         struct ieee80211_sub_if_data *sdata;
1543         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1544
1545         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1546         return 0;
1547 }
1548
1549 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1550 {
1551         return (mask >> (parm-1)) & 0x1;
1552 }
1553
1554 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1555                 const struct mesh_setup *setup)
1556 {
1557         u8 *new_ie;
1558         const u8 *old_ie;
1559         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1560                                         struct ieee80211_sub_if_data, u.mesh);
1561
1562         /* allocate information elements */
1563         new_ie = NULL;
1564         old_ie = ifmsh->ie;
1565
1566         if (setup->ie_len) {
1567                 new_ie = kmemdup(setup->ie, setup->ie_len,
1568                                 GFP_KERNEL);
1569                 if (!new_ie)
1570                         return -ENOMEM;
1571         }
1572         ifmsh->ie_len = setup->ie_len;
1573         ifmsh->ie = new_ie;
1574         kfree(old_ie);
1575
1576         /* now copy the rest of the setup parameters */
1577         ifmsh->mesh_id_len = setup->mesh_id_len;
1578         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1579         ifmsh->mesh_sp_id = setup->sync_method;
1580         ifmsh->mesh_pp_id = setup->path_sel_proto;
1581         ifmsh->mesh_pm_id = setup->path_metric;
1582         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1583         if (setup->is_authenticated)
1584                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1585         if (setup->is_secure)
1586                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1587
1588         /* mcast rate setting in Mesh Node */
1589         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1590                                                 sizeof(setup->mcast_rate));
1591
1592         return 0;
1593 }
1594
1595 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1596                                         struct net_device *dev, u32 mask,
1597                                         const struct mesh_config *nconf)
1598 {
1599         struct mesh_config *conf;
1600         struct ieee80211_sub_if_data *sdata;
1601         struct ieee80211_if_mesh *ifmsh;
1602
1603         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1604         ifmsh = &sdata->u.mesh;
1605
1606         /* Set the config options which we are interested in setting */
1607         conf = &(sdata->u.mesh.mshcfg);
1608         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1609                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1610         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1611                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1612         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1613                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1614         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1615                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1616         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1617                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1618         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1619                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1620         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1621                 conf->element_ttl = nconf->element_ttl;
1622         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1623                 conf->auto_open_plinks = nconf->auto_open_plinks;
1624         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1625                 conf->dot11MeshNbrOffsetMaxNeighbor =
1626                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1627         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1628                 conf->dot11MeshHWMPmaxPREQretries =
1629                         nconf->dot11MeshHWMPmaxPREQretries;
1630         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1631                 conf->path_refresh_time = nconf->path_refresh_time;
1632         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1633                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1634         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1635                 conf->dot11MeshHWMPactivePathTimeout =
1636                         nconf->dot11MeshHWMPactivePathTimeout;
1637         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1638                 conf->dot11MeshHWMPpreqMinInterval =
1639                         nconf->dot11MeshHWMPpreqMinInterval;
1640         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1641                 conf->dot11MeshHWMPperrMinInterval =
1642                         nconf->dot11MeshHWMPperrMinInterval;
1643         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1644                            mask))
1645                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1646                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1647         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1648                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1649                 ieee80211_mesh_root_setup(ifmsh);
1650         }
1651         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1652                 /* our current gate announcement implementation rides on root
1653                  * announcements, so require this ifmsh to also be a root node
1654                  * */
1655                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1656                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1657                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1658                         ieee80211_mesh_root_setup(ifmsh);
1659                 }
1660                 conf->dot11MeshGateAnnouncementProtocol =
1661                         nconf->dot11MeshGateAnnouncementProtocol;
1662         }
1663         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1664                 conf->dot11MeshHWMPRannInterval =
1665                         nconf->dot11MeshHWMPRannInterval;
1666         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1667                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1668         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1669                 /* our RSSI threshold implementation is supported only for
1670                  * devices that report signal in dBm.
1671                  */
1672                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1673                         return -ENOTSUPP;
1674                 conf->rssi_threshold = nconf->rssi_threshold;
1675         }
1676         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1677                 conf->ht_opmode = nconf->ht_opmode;
1678                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1679                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1680         }
1681         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1682                 conf->dot11MeshHWMPactivePathToRootTimeout =
1683                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1684         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1685                 conf->dot11MeshHWMProotInterval =
1686                         nconf->dot11MeshHWMProotInterval;
1687         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1688                 conf->dot11MeshHWMPconfirmationInterval =
1689                         nconf->dot11MeshHWMPconfirmationInterval;
1690         return 0;
1691 }
1692
1693 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1694                                const struct mesh_config *conf,
1695                                const struct mesh_setup *setup)
1696 {
1697         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1698         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1699         int err;
1700
1701         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1702         err = copy_mesh_setup(ifmsh, setup);
1703         if (err)
1704                 return err;
1705
1706         /* can mesh use other SMPS modes? */
1707         sdata->smps_mode = IEEE80211_SMPS_OFF;
1708         sdata->needed_rx_chains = sdata->local->rx_chains;
1709
1710         err = ieee80211_vif_use_channel(sdata, setup->channel,
1711                                         setup->channel_type,
1712                                         IEEE80211_CHANCTX_SHARED);
1713         if (err)
1714                 return err;
1715
1716         ieee80211_start_mesh(sdata);
1717
1718         return 0;
1719 }
1720
1721 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1722 {
1723         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1724
1725         ieee80211_stop_mesh(sdata);
1726         ieee80211_vif_release_channel(sdata);
1727
1728         return 0;
1729 }
1730 #endif
1731
1732 static int ieee80211_change_bss(struct wiphy *wiphy,
1733                                 struct net_device *dev,
1734                                 struct bss_parameters *params)
1735 {
1736         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1737         enum ieee80211_band band;
1738         u32 changed = 0;
1739
1740         if (!rtnl_dereference(sdata->u.ap.beacon))
1741                 return -ENOENT;
1742
1743         band = ieee80211_get_sdata_band(sdata);
1744
1745         if (params->use_cts_prot >= 0) {
1746                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1747                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1748         }
1749         if (params->use_short_preamble >= 0) {
1750                 sdata->vif.bss_conf.use_short_preamble =
1751                         params->use_short_preamble;
1752                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1753         }
1754
1755         if (!sdata->vif.bss_conf.use_short_slot &&
1756             band == IEEE80211_BAND_5GHZ) {
1757                 sdata->vif.bss_conf.use_short_slot = true;
1758                 changed |= BSS_CHANGED_ERP_SLOT;
1759         }
1760
1761         if (params->use_short_slot_time >= 0) {
1762                 sdata->vif.bss_conf.use_short_slot =
1763                         params->use_short_slot_time;
1764                 changed |= BSS_CHANGED_ERP_SLOT;
1765         }
1766
1767         if (params->basic_rates) {
1768                 int i, j;
1769                 u32 rates = 0;
1770                 struct ieee80211_supported_band *sband = wiphy->bands[band];
1771
1772                 for (i = 0; i < params->basic_rates_len; i++) {
1773                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1774                         for (j = 0; j < sband->n_bitrates; j++) {
1775                                 if (sband->bitrates[j].bitrate == rate)
1776                                         rates |= BIT(j);
1777                         }
1778                 }
1779                 sdata->vif.bss_conf.basic_rates = rates;
1780                 changed |= BSS_CHANGED_BASIC_RATES;
1781         }
1782
1783         if (params->ap_isolate >= 0) {
1784                 if (params->ap_isolate)
1785                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1786                 else
1787                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1788         }
1789
1790         if (params->ht_opmode >= 0) {
1791                 sdata->vif.bss_conf.ht_operation_mode =
1792                         (u16) params->ht_opmode;
1793                 changed |= BSS_CHANGED_HT;
1794         }
1795
1796         ieee80211_bss_info_change_notify(sdata, changed);
1797
1798         return 0;
1799 }
1800
1801 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1802                                     struct net_device *dev,
1803                                     struct ieee80211_txq_params *params)
1804 {
1805         struct ieee80211_local *local = wiphy_priv(wiphy);
1806         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1807         struct ieee80211_tx_queue_params p;
1808
1809         if (!local->ops->conf_tx)
1810                 return -EOPNOTSUPP;
1811
1812         if (local->hw.queues < IEEE80211_NUM_ACS)
1813                 return -EOPNOTSUPP;
1814
1815         memset(&p, 0, sizeof(p));
1816         p.aifs = params->aifs;
1817         p.cw_max = params->cwmax;
1818         p.cw_min = params->cwmin;
1819         p.txop = params->txop;
1820
1821         /*
1822          * Setting tx queue params disables u-apsd because it's only
1823          * called in master mode.
1824          */
1825         p.uapsd = false;
1826
1827         sdata->tx_conf[params->ac] = p;
1828         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1829                 wiphy_debug(local->hw.wiphy,
1830                             "failed to set TX queue parameters for AC %d\n",
1831                             params->ac);
1832                 return -EINVAL;
1833         }
1834
1835         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1836
1837         return 0;
1838 }
1839
1840 #ifdef CONFIG_PM
1841 static int ieee80211_suspend(struct wiphy *wiphy,
1842                              struct cfg80211_wowlan *wowlan)
1843 {
1844         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1845 }
1846
1847 static int ieee80211_resume(struct wiphy *wiphy)
1848 {
1849         return __ieee80211_resume(wiphy_priv(wiphy));
1850 }
1851 #else
1852 #define ieee80211_suspend NULL
1853 #define ieee80211_resume NULL
1854 #endif
1855
1856 static int ieee80211_scan(struct wiphy *wiphy,
1857                           struct cfg80211_scan_request *req)
1858 {
1859         struct ieee80211_sub_if_data *sdata;
1860
1861         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1862
1863         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1864         case NL80211_IFTYPE_STATION:
1865         case NL80211_IFTYPE_ADHOC:
1866         case NL80211_IFTYPE_MESH_POINT:
1867         case NL80211_IFTYPE_P2P_CLIENT:
1868         case NL80211_IFTYPE_P2P_DEVICE:
1869                 break;
1870         case NL80211_IFTYPE_P2P_GO:
1871                 if (sdata->local->ops->hw_scan)
1872                         break;
1873                 /*
1874                  * FIXME: implement NoA while scanning in software,
1875                  * for now fall through to allow scanning only when
1876                  * beaconing hasn't been configured yet
1877                  */
1878         case NL80211_IFTYPE_AP:
1879                 /*
1880                  * If the scan has been forced (and the driver supports
1881                  * forcing), don't care about being beaconing already.
1882                  * This will create problems to the attached stations (e.g. all
1883                  * the  frames sent while scanning on other channel will be
1884                  * lost)
1885                  */
1886                 if (sdata->u.ap.beacon &&
1887                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
1888                      !(req->flags & NL80211_SCAN_FLAG_AP)))
1889                         return -EOPNOTSUPP;
1890                 break;
1891         default:
1892                 return -EOPNOTSUPP;
1893         }
1894
1895         return ieee80211_request_scan(sdata, req);
1896 }
1897
1898 static int
1899 ieee80211_sched_scan_start(struct wiphy *wiphy,
1900                            struct net_device *dev,
1901                            struct cfg80211_sched_scan_request *req)
1902 {
1903         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1904
1905         if (!sdata->local->ops->sched_scan_start)
1906                 return -EOPNOTSUPP;
1907
1908         return ieee80211_request_sched_scan_start(sdata, req);
1909 }
1910
1911 static int
1912 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1913 {
1914         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1915
1916         if (!sdata->local->ops->sched_scan_stop)
1917                 return -EOPNOTSUPP;
1918
1919         return ieee80211_request_sched_scan_stop(sdata);
1920 }
1921
1922 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1923                           struct cfg80211_auth_request *req)
1924 {
1925         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1926 }
1927
1928 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1929                            struct cfg80211_assoc_request *req)
1930 {
1931         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1932 }
1933
1934 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1935                             struct cfg80211_deauth_request *req)
1936 {
1937         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1938 }
1939
1940 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1941                               struct cfg80211_disassoc_request *req)
1942 {
1943         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1944 }
1945
1946 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1947                                struct cfg80211_ibss_params *params)
1948 {
1949         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
1950 }
1951
1952 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1953 {
1954         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
1955 }
1956
1957 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1958 {
1959         struct ieee80211_local *local = wiphy_priv(wiphy);
1960         int err;
1961
1962         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1963                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1964
1965                 if (err)
1966                         return err;
1967         }
1968
1969         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1970                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1971
1972                 if (err)
1973                         return err;
1974         }
1975
1976         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1977                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1978
1979                 if (err)
1980                         return err;
1981         }
1982
1983         if (changed & WIPHY_PARAM_RETRY_SHORT)
1984                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1985         if (changed & WIPHY_PARAM_RETRY_LONG)
1986                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1987         if (changed &
1988             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1989                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1990
1991         return 0;
1992 }
1993
1994 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1995                                   enum nl80211_tx_power_setting type, int mbm)
1996 {
1997         struct ieee80211_local *local = wiphy_priv(wiphy);
1998         struct ieee80211_channel *chan = local->_oper_channel;
1999         u32 changes = 0;
2000
2001         /* FIXME */
2002         if (local->use_chanctx)
2003                 return -EOPNOTSUPP;
2004
2005         switch (type) {
2006         case NL80211_TX_POWER_AUTOMATIC:
2007                 local->user_power_level = -1;
2008                 break;
2009         case NL80211_TX_POWER_LIMITED:
2010                 if (mbm < 0 || (mbm % 100))
2011                         return -EOPNOTSUPP;
2012                 local->user_power_level = MBM_TO_DBM(mbm);
2013                 break;
2014         case NL80211_TX_POWER_FIXED:
2015                 if (mbm < 0 || (mbm % 100))
2016                         return -EOPNOTSUPP;
2017                 /* TODO: move to cfg80211 when it knows the channel */
2018                 if (MBM_TO_DBM(mbm) > chan->max_power)
2019                         return -EINVAL;
2020                 local->user_power_level = MBM_TO_DBM(mbm);
2021                 break;
2022         }
2023
2024         ieee80211_hw_config(local, changes);
2025
2026         return 0;
2027 }
2028
2029 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
2030 {
2031         struct ieee80211_local *local = wiphy_priv(wiphy);
2032
2033         *dbm = local->hw.conf.power_level;
2034
2035         return 0;
2036 }
2037
2038 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2039                                   const u8 *addr)
2040 {
2041         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2042
2043         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2044
2045         return 0;
2046 }
2047
2048 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2049 {
2050         struct ieee80211_local *local = wiphy_priv(wiphy);
2051
2052         drv_rfkill_poll(local);
2053 }
2054
2055 #ifdef CONFIG_NL80211_TESTMODE
2056 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
2057 {
2058         struct ieee80211_local *local = wiphy_priv(wiphy);
2059
2060         if (!local->ops->testmode_cmd)
2061                 return -EOPNOTSUPP;
2062
2063         return local->ops->testmode_cmd(&local->hw, data, len);
2064 }
2065
2066 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2067                                    struct sk_buff *skb,
2068                                    struct netlink_callback *cb,
2069                                    void *data, int len)
2070 {
2071         struct ieee80211_local *local = wiphy_priv(wiphy);
2072
2073         if (!local->ops->testmode_dump)
2074                 return -EOPNOTSUPP;
2075
2076         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2077 }
2078 #endif
2079
2080 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
2081                              enum ieee80211_smps_mode smps_mode)
2082 {
2083         const u8 *ap;
2084         enum ieee80211_smps_mode old_req;
2085         int err;
2086
2087         lockdep_assert_held(&sdata->u.mgd.mtx);
2088
2089         old_req = sdata->u.mgd.req_smps;
2090         sdata->u.mgd.req_smps = smps_mode;
2091
2092         if (old_req == smps_mode &&
2093             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2094                 return 0;
2095
2096         /*
2097          * If not associated, or current association is not an HT
2098          * association, there's no need to do anything, just store
2099          * the new value until we associate.
2100          */
2101         if (!sdata->u.mgd.associated ||
2102             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT)
2103                 return 0;
2104
2105         ap = sdata->u.mgd.associated->bssid;
2106
2107         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2108                 if (sdata->u.mgd.powersave)
2109                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2110                 else
2111                         smps_mode = IEEE80211_SMPS_OFF;
2112         }
2113
2114         /* send SM PS frame to AP */
2115         err = ieee80211_send_smps_action(sdata, smps_mode,
2116                                          ap, ap);
2117         if (err)
2118                 sdata->u.mgd.req_smps = old_req;
2119
2120         return err;
2121 }
2122
2123 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2124                                     bool enabled, int timeout)
2125 {
2126         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2127         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2128
2129         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2130                 return -EOPNOTSUPP;
2131
2132         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
2133                 return -EOPNOTSUPP;
2134
2135         if (enabled == sdata->u.mgd.powersave &&
2136             timeout == local->dynamic_ps_forced_timeout)
2137                 return 0;
2138
2139         sdata->u.mgd.powersave = enabled;
2140         local->dynamic_ps_forced_timeout = timeout;
2141
2142         /* no change, but if automatic follow powersave */
2143         mutex_lock(&sdata->u.mgd.mtx);
2144         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
2145         mutex_unlock(&sdata->u.mgd.mtx);
2146
2147         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
2148                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2149
2150         ieee80211_recalc_ps(local, -1);
2151         ieee80211_recalc_ps_vif(sdata);
2152
2153         return 0;
2154 }
2155
2156 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2157                                          struct net_device *dev,
2158                                          s32 rssi_thold, u32 rssi_hyst)
2159 {
2160         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2161         struct ieee80211_vif *vif = &sdata->vif;
2162         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2163
2164         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2165             rssi_hyst == bss_conf->cqm_rssi_hyst)
2166                 return 0;
2167
2168         bss_conf->cqm_rssi_thold = rssi_thold;
2169         bss_conf->cqm_rssi_hyst = rssi_hyst;
2170
2171         /* tell the driver upon association, unless already associated */
2172         if (sdata->u.mgd.associated &&
2173             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2174                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2175
2176         return 0;
2177 }
2178
2179 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2180                                       struct net_device *dev,
2181                                       const u8 *addr,
2182                                       const struct cfg80211_bitrate_mask *mask)
2183 {
2184         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2185         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2186         int i, ret;
2187
2188         if (!ieee80211_sdata_running(sdata))
2189                 return -ENETDOWN;
2190
2191         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
2192                 ret = drv_set_bitrate_mask(local, sdata, mask);
2193                 if (ret)
2194                         return ret;
2195         }
2196
2197         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
2198                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2199                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
2200                        sizeof(mask->control[i].mcs));
2201         }
2202
2203         return 0;
2204 }
2205
2206 static int ieee80211_start_roc_work(struct ieee80211_local *local,
2207                                     struct ieee80211_sub_if_data *sdata,
2208                                     struct ieee80211_channel *channel,
2209                                     enum nl80211_channel_type channel_type,
2210                                     unsigned int duration, u64 *cookie,
2211                                     struct sk_buff *txskb)
2212 {
2213         struct ieee80211_roc_work *roc, *tmp;
2214         bool queued = false;
2215         int ret;
2216
2217         lockdep_assert_held(&local->mtx);
2218
2219         if (local->use_chanctx && !local->ops->remain_on_channel)
2220                 return -EOPNOTSUPP;
2221
2222         roc = kzalloc(sizeof(*roc), GFP_KERNEL);
2223         if (!roc)
2224                 return -ENOMEM;
2225
2226         roc->chan = channel;
2227         roc->chan_type = channel_type;
2228         roc->duration = duration;
2229         roc->req_duration = duration;
2230         roc->frame = txskb;
2231         roc->mgmt_tx_cookie = (unsigned long)txskb;
2232         roc->sdata = sdata;
2233         INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work);
2234         INIT_LIST_HEAD(&roc->dependents);
2235
2236         /* if there's one pending or we're scanning, queue this one */
2237         if (!list_empty(&local->roc_list) || local->scanning)
2238                 goto out_check_combine;
2239
2240         /* if not HW assist, just queue & schedule work */
2241         if (!local->ops->remain_on_channel) {
2242                 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0);
2243                 goto out_queue;
2244         }
2245
2246         /* otherwise actually kick it off here (for error handling) */
2247
2248         /*
2249          * If the duration is zero, then the driver
2250          * wouldn't actually do anything. Set it to
2251          * 10 for now.
2252          *
2253          * TODO: cancel the off-channel operation
2254          *       when we get the SKB's TX status and
2255          *       the wait time was zero before.
2256          */
2257         if (!duration)
2258                 duration = 10;
2259
2260         ret = drv_remain_on_channel(local, channel, channel_type, duration);
2261         if (ret) {
2262                 kfree(roc);
2263                 return ret;
2264         }
2265
2266         roc->started = true;
2267         goto out_queue;
2268
2269  out_check_combine:
2270         list_for_each_entry(tmp, &local->roc_list, list) {
2271                 if (tmp->chan != channel || tmp->chan_type != channel_type)
2272                         continue;
2273
2274                 /*
2275                  * Extend this ROC if possible:
2276                  *
2277                  * If it hasn't started yet, just increase the duration
2278                  * and add the new one to the list of dependents.
2279                  */
2280                 if (!tmp->started) {
2281                         list_add_tail(&roc->list, &tmp->dependents);
2282                         tmp->duration = max(tmp->duration, roc->duration);
2283                         queued = true;
2284                         break;
2285                 }
2286
2287                 /* If it has already started, it's more difficult ... */
2288                 if (local->ops->remain_on_channel) {
2289                         unsigned long j = jiffies;
2290
2291                         /*
2292                          * In the offloaded ROC case, if it hasn't begun, add
2293                          * this new one to the dependent list to be handled
2294                          * when the the master one begins. If it has begun,
2295                          * check that there's still a minimum time left and
2296                          * if so, start this one, transmitting the frame, but
2297                          * add it to the list directly after this one with a
2298                          * a reduced time so we'll ask the driver to execute
2299                          * it right after finishing the previous one, in the
2300                          * hope that it'll also be executed right afterwards,
2301                          * effectively extending the old one.
2302                          * If there's no minimum time left, just add it to the
2303                          * normal list.
2304                          */
2305                         if (!tmp->hw_begun) {
2306                                 list_add_tail(&roc->list, &tmp->dependents);
2307                                 queued = true;
2308                                 break;
2309                         }
2310
2311                         if (time_before(j + IEEE80211_ROC_MIN_LEFT,
2312                                         tmp->hw_start_time +
2313                                         msecs_to_jiffies(tmp->duration))) {
2314                                 int new_dur;
2315
2316                                 ieee80211_handle_roc_started(roc);
2317
2318                                 new_dur = roc->duration -
2319                                           jiffies_to_msecs(tmp->hw_start_time +
2320                                                            msecs_to_jiffies(
2321                                                                 tmp->duration) -
2322                                                            j);
2323
2324                                 if (new_dur > 0) {
2325                                         /* add right after tmp */
2326                                         list_add(&roc->list, &tmp->list);
2327                                 } else {
2328                                         list_add_tail(&roc->list,
2329                                                       &tmp->dependents);
2330                                 }
2331                                 queued = true;
2332                         }
2333                 } else if (del_timer_sync(&tmp->work.timer)) {
2334                         unsigned long new_end;
2335
2336                         /*
2337                          * In the software ROC case, cancel the timer, if
2338                          * that fails then the finish work is already
2339                          * queued/pending and thus we queue the new ROC
2340                          * normally, if that succeeds then we can extend
2341                          * the timer duration and TX the frame (if any.)
2342                          */
2343
2344                         list_add_tail(&roc->list, &tmp->dependents);
2345                         queued = true;
2346
2347                         new_end = jiffies + msecs_to_jiffies(roc->duration);
2348
2349                         /* ok, it was started & we canceled timer */
2350                         if (time_after(new_end, tmp->work.timer.expires))
2351                                 mod_timer(&tmp->work.timer, new_end);
2352                         else
2353                                 add_timer(&tmp->work.timer);
2354
2355                         ieee80211_handle_roc_started(roc);
2356                 }
2357                 break;
2358         }
2359
2360  out_queue:
2361         if (!queued)
2362                 list_add_tail(&roc->list, &local->roc_list);
2363
2364         /*
2365          * cookie is either the roc (for normal roc)
2366          * or the SKB (for mgmt TX)
2367          */
2368         if (txskb)
2369                 *cookie = (unsigned long)txskb;
2370         else
2371                 *cookie = (unsigned long)roc;
2372
2373         return 0;
2374 }
2375
2376 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
2377                                        struct wireless_dev *wdev,
2378                                        struct ieee80211_channel *chan,
2379                                        enum nl80211_channel_type channel_type,
2380                                        unsigned int duration,
2381                                        u64 *cookie)
2382 {
2383         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2384         struct ieee80211_local *local = sdata->local;
2385         int ret;
2386
2387         mutex_lock(&local->mtx);
2388         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2389                                        duration, cookie, NULL);
2390         mutex_unlock(&local->mtx);
2391
2392         return ret;
2393 }
2394
2395 static int ieee80211_cancel_roc(struct ieee80211_local *local,
2396                                 u64 cookie, bool mgmt_tx)
2397 {
2398         struct ieee80211_roc_work *roc, *tmp, *found = NULL;
2399         int ret;
2400
2401         mutex_lock(&local->mtx);
2402         list_for_each_entry_safe(roc, tmp, &local->roc_list, list) {
2403                 struct ieee80211_roc_work *dep, *tmp2;
2404
2405                 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) {
2406                         if (!mgmt_tx && (unsigned long)dep != cookie)
2407                                 continue;
2408                         else if (mgmt_tx && dep->mgmt_tx_cookie != cookie)
2409                                 continue;
2410                         /* found dependent item -- just remove it */
2411                         list_del(&dep->list);
2412                         mutex_unlock(&local->mtx);
2413
2414                         ieee80211_roc_notify_destroy(dep);
2415                         return 0;
2416                 }
2417
2418                 if (!mgmt_tx && (unsigned long)roc != cookie)
2419                         continue;
2420                 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie)
2421                         continue;
2422
2423                 found = roc;
2424                 break;
2425         }
2426
2427         if (!found) {
2428                 mutex_unlock(&local->mtx);
2429                 return -ENOENT;
2430         }
2431
2432         /*
2433          * We found the item to cancel, so do that. Note that it
2434          * may have dependents, which we also cancel (and send
2435          * the expired signal for.) Not doing so would be quite
2436          * tricky here, but we may need to fix it later.
2437          */
2438
2439         if (local->ops->remain_on_channel) {
2440                 if (found->started) {
2441                         ret = drv_cancel_remain_on_channel(local);
2442                         if (WARN_ON_ONCE(ret)) {
2443                                 mutex_unlock(&local->mtx);
2444                                 return ret;
2445                         }
2446                 }
2447
2448                 list_del(&found->list);
2449
2450                 if (found->started)
2451                         ieee80211_start_next_roc(local);
2452                 mutex_unlock(&local->mtx);
2453
2454                 ieee80211_roc_notify_destroy(found);
2455         } else {
2456                 /* work may be pending so use it all the time */
2457                 found->abort = true;
2458                 ieee80211_queue_delayed_work(&local->hw, &found->work, 0);
2459
2460                 mutex_unlock(&local->mtx);
2461
2462                 /* work will clean up etc */
2463                 flush_delayed_work(&found->work);
2464         }
2465
2466         return 0;
2467 }
2468
2469 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2470                                               struct wireless_dev *wdev,
2471                                               u64 cookie)
2472 {
2473         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2474         struct ieee80211_local *local = sdata->local;
2475
2476         return ieee80211_cancel_roc(local, cookie, false);
2477 }
2478
2479 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
2480                              struct ieee80211_channel *chan, bool offchan,
2481                              enum nl80211_channel_type channel_type,
2482                              bool channel_type_valid, unsigned int wait,
2483                              const u8 *buf, size_t len, bool no_cck,
2484                              bool dont_wait_for_ack, u64 *cookie)
2485 {
2486         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2487         struct ieee80211_local *local = sdata->local;
2488         struct sk_buff *skb;
2489         struct sta_info *sta;
2490         const struct ieee80211_mgmt *mgmt = (void *)buf;
2491         bool need_offchan = false;
2492         u32 flags;
2493         int ret;
2494
2495         if (dont_wait_for_ack)
2496                 flags = IEEE80211_TX_CTL_NO_ACK;
2497         else
2498                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2499                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2500
2501         if (no_cck)
2502                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2503
2504         switch (sdata->vif.type) {
2505         case NL80211_IFTYPE_ADHOC:
2506                 if (!sdata->vif.bss_conf.ibss_joined)
2507                         need_offchan = true;
2508                 /* fall through */
2509 #ifdef CONFIG_MAC80211_MESH
2510         case NL80211_IFTYPE_MESH_POINT:
2511                 if (ieee80211_vif_is_mesh(&sdata->vif) &&
2512                     !sdata->u.mesh.mesh_id_len)
2513                         need_offchan = true;
2514                 /* fall through */
2515 #endif
2516         case NL80211_IFTYPE_AP:
2517         case NL80211_IFTYPE_AP_VLAN:
2518         case NL80211_IFTYPE_P2P_GO:
2519                 if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
2520                     !ieee80211_vif_is_mesh(&sdata->vif) &&
2521                     !rcu_access_pointer(sdata->bss->beacon))
2522                         need_offchan = true;
2523                 if (!ieee80211_is_action(mgmt->frame_control) ||
2524                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2525                         break;
2526                 rcu_read_lock();
2527                 sta = sta_info_get(sdata, mgmt->da);
2528                 rcu_read_unlock();
2529                 if (!sta)
2530                         return -ENOLINK;
2531                 break;
2532         case NL80211_IFTYPE_STATION:
2533         case NL80211_IFTYPE_P2P_CLIENT:
2534                 if (!sdata->u.mgd.associated)
2535                         need_offchan = true;
2536                 break;
2537         case NL80211_IFTYPE_P2P_DEVICE:
2538                 need_offchan = true;
2539                 break;
2540         default:
2541                 return -EOPNOTSUPP;
2542         }
2543
2544         mutex_lock(&local->mtx);
2545
2546         /* Check if the operating channel is the requested channel */
2547         if (!need_offchan) {
2548                 struct ieee80211_chanctx_conf *chanctx_conf;
2549
2550                 rcu_read_lock();
2551                 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
2552
2553                 if (chanctx_conf) {
2554                         need_offchan = chan != chanctx_conf->channel;
2555                         if (channel_type_valid &&
2556                             channel_type != chanctx_conf->channel_type)
2557                                 need_offchan = true;
2558                 } else {
2559                         need_offchan = true;
2560                 }
2561                 rcu_read_unlock();
2562         }
2563
2564         if (need_offchan && !offchan) {
2565                 ret = -EBUSY;
2566                 goto out_unlock;
2567         }
2568
2569         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2570         if (!skb) {
2571                 ret = -ENOMEM;
2572                 goto out_unlock;
2573         }
2574         skb_reserve(skb, local->hw.extra_tx_headroom);
2575
2576         memcpy(skb_put(skb, len), buf, len);
2577
2578         IEEE80211_SKB_CB(skb)->flags = flags;
2579
2580         skb->dev = sdata->dev;
2581
2582         if (!need_offchan) {
2583                 *cookie = (unsigned long) skb;
2584                 ieee80211_tx_skb(sdata, skb);
2585                 ret = 0;
2586                 goto out_unlock;
2587         }
2588
2589         IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2590         if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
2591                 IEEE80211_SKB_CB(skb)->hw_queue =
2592                         local->hw.offchannel_tx_hw_queue;
2593
2594         /* This will handle all kinds of coalescing and immediate TX */
2595         ret = ieee80211_start_roc_work(local, sdata, chan, channel_type,
2596                                        wait, cookie, skb);
2597         if (ret)
2598                 kfree_skb(skb);
2599  out_unlock:
2600         mutex_unlock(&local->mtx);
2601         return ret;
2602 }
2603
2604 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2605                                          struct wireless_dev *wdev,
2606                                          u64 cookie)
2607 {
2608         struct ieee80211_local *local = wiphy_priv(wiphy);
2609
2610         return ieee80211_cancel_roc(local, cookie, true);
2611 }
2612
2613 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2614                                           struct wireless_dev *wdev,
2615                                           u16 frame_type, bool reg)
2616 {
2617         struct ieee80211_local *local = wiphy_priv(wiphy);
2618         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2619
2620         switch (frame_type) {
2621         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH:
2622                 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
2623                         struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
2624
2625                         if (reg)
2626                                 ifibss->auth_frame_registrations++;
2627                         else
2628                                 ifibss->auth_frame_registrations--;
2629                 }
2630                 break;
2631         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
2632                 if (reg)
2633                         local->probe_req_reg++;
2634                 else
2635                         local->probe_req_reg--;
2636
2637                 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2638                 break;
2639         default:
2640                 break;
2641         }
2642 }
2643
2644 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2645 {
2646         struct ieee80211_local *local = wiphy_priv(wiphy);
2647
2648         if (local->started)
2649                 return -EOPNOTSUPP;
2650
2651         return drv_set_antenna(local, tx_ant, rx_ant);
2652 }
2653
2654 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2655 {
2656         struct ieee80211_local *local = wiphy_priv(wiphy);
2657
2658         return drv_get_antenna(local, tx_ant, rx_ant);
2659 }
2660
2661 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2662 {
2663         struct ieee80211_local *local = wiphy_priv(wiphy);
2664
2665         return drv_set_ringparam(local, tx, rx);
2666 }
2667
2668 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2669                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2670 {
2671         struct ieee80211_local *local = wiphy_priv(wiphy);
2672
2673         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2674 }
2675
2676 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2677                                     struct net_device *dev,
2678                                     struct cfg80211_gtk_rekey_data *data)
2679 {
2680         struct ieee80211_local *local = wiphy_priv(wiphy);
2681         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2682
2683         if (!local->ops->set_rekey_data)
2684                 return -EOPNOTSUPP;
2685
2686         drv_set_rekey_data(local, sdata, data);
2687
2688         return 0;
2689 }
2690
2691 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2692 {
2693         u8 *pos = (void *)skb_put(skb, 7);
2694
2695         *pos++ = WLAN_EID_EXT_CAPABILITY;
2696         *pos++ = 5; /* len */
2697         *pos++ = 0x0;
2698         *pos++ = 0x0;
2699         *pos++ = 0x0;
2700         *pos++ = 0x0;
2701         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2702 }
2703
2704 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2705 {
2706         struct ieee80211_local *local = sdata->local;
2707         u16 capab;
2708
2709         capab = 0;
2710         if (ieee80211_get_sdata_band(sdata) != IEEE80211_BAND_2GHZ)
2711                 return capab;
2712
2713         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2714                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2715         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2716                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2717
2718         return capab;
2719 }
2720
2721 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2722                                        u8 *peer, u8 *bssid)
2723 {
2724         struct ieee80211_tdls_lnkie *lnkid;
2725
2726         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2727
2728         lnkid->ie_type = WLAN_EID_LINK_ID;
2729         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2730
2731         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2732         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2733         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2734 }
2735
2736 static int
2737 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2738                                u8 *peer, u8 action_code, u8 dialog_token,
2739                                u16 status_code, struct sk_buff *skb)
2740 {
2741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2742         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2743         struct ieee80211_tdls_data *tf;
2744
2745         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2746
2747         memcpy(tf->da, peer, ETH_ALEN);
2748         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2749         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2750         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2751
2752         switch (action_code) {
2753         case WLAN_TDLS_SETUP_REQUEST:
2754                 tf->category = WLAN_CATEGORY_TDLS;
2755                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2756
2757                 skb_put(skb, sizeof(tf->u.setup_req));
2758                 tf->u.setup_req.dialog_token = dialog_token;
2759                 tf->u.setup_req.capability =
2760                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2761
2762                 ieee80211_add_srates_ie(sdata, skb, false, band);
2763                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2764                 ieee80211_tdls_add_ext_capab(skb);
2765                 break;
2766         case WLAN_TDLS_SETUP_RESPONSE:
2767                 tf->category = WLAN_CATEGORY_TDLS;
2768                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2769
2770                 skb_put(skb, sizeof(tf->u.setup_resp));
2771                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2772                 tf->u.setup_resp.dialog_token = dialog_token;
2773                 tf->u.setup_resp.capability =
2774                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2775
2776                 ieee80211_add_srates_ie(sdata, skb, false, band);
2777                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2778                 ieee80211_tdls_add_ext_capab(skb);
2779                 break;
2780         case WLAN_TDLS_SETUP_CONFIRM:
2781                 tf->category = WLAN_CATEGORY_TDLS;
2782                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2783
2784                 skb_put(skb, sizeof(tf->u.setup_cfm));
2785                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2786                 tf->u.setup_cfm.dialog_token = dialog_token;
2787                 break;
2788         case WLAN_TDLS_TEARDOWN:
2789                 tf->category = WLAN_CATEGORY_TDLS;
2790                 tf->action_code = WLAN_TDLS_TEARDOWN;
2791
2792                 skb_put(skb, sizeof(tf->u.teardown));
2793                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2794                 break;
2795         case WLAN_TDLS_DISCOVERY_REQUEST:
2796                 tf->category = WLAN_CATEGORY_TDLS;
2797                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2798
2799                 skb_put(skb, sizeof(tf->u.discover_req));
2800                 tf->u.discover_req.dialog_token = dialog_token;
2801                 break;
2802         default:
2803                 return -EINVAL;
2804         }
2805
2806         return 0;
2807 }
2808
2809 static int
2810 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2811                            u8 *peer, u8 action_code, u8 dialog_token,
2812                            u16 status_code, struct sk_buff *skb)
2813 {
2814         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2815         enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
2816         struct ieee80211_mgmt *mgmt;
2817
2818         mgmt = (void *)skb_put(skb, 24);
2819         memset(mgmt, 0, 24);
2820         memcpy(mgmt->da, peer, ETH_ALEN);
2821         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2822         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2823
2824         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2825                                           IEEE80211_STYPE_ACTION);
2826
2827         switch (action_code) {
2828         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2829                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2830                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2831                 mgmt->u.action.u.tdls_discover_resp.action_code =
2832                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2833                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2834                         dialog_token;
2835                 mgmt->u.action.u.tdls_discover_resp.capability =
2836                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2837
2838                 ieee80211_add_srates_ie(sdata, skb, false, band);
2839                 ieee80211_add_ext_srates_ie(sdata, skb, false, band);
2840                 ieee80211_tdls_add_ext_capab(skb);
2841                 break;
2842         default:
2843                 return -EINVAL;
2844         }
2845
2846         return 0;
2847 }
2848
2849 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2850                                u8 *peer, u8 action_code, u8 dialog_token,
2851                                u16 status_code, const u8 *extra_ies,
2852                                size_t extra_ies_len)
2853 {
2854         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2855         struct ieee80211_local *local = sdata->local;
2856         struct sk_buff *skb = NULL;
2857         bool send_direct;
2858         int ret;
2859
2860         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2861                 return -ENOTSUPP;
2862
2863         /* make sure we are in managed mode, and associated */
2864         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2865             !sdata->u.mgd.associated)
2866                 return -EINVAL;
2867
2868         tdls_dbg(sdata, "TDLS mgmt action %d peer %pM\n",
2869                  action_code, peer);
2870
2871         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2872                             max(sizeof(struct ieee80211_mgmt),
2873                                 sizeof(struct ieee80211_tdls_data)) +
2874                             50 + /* supported rates */
2875                             7 + /* ext capab */
2876                             extra_ies_len +
2877                             sizeof(struct ieee80211_tdls_lnkie));
2878         if (!skb)
2879                 return -ENOMEM;
2880
2881         skb_reserve(skb, local->hw.extra_tx_headroom);
2882
2883         switch (action_code) {
2884         case WLAN_TDLS_SETUP_REQUEST:
2885         case WLAN_TDLS_SETUP_RESPONSE:
2886         case WLAN_TDLS_SETUP_CONFIRM:
2887         case WLAN_TDLS_TEARDOWN:
2888         case WLAN_TDLS_DISCOVERY_REQUEST:
2889                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2890                                                      action_code, dialog_token,
2891                                                      status_code, skb);
2892                 send_direct = false;
2893                 break;
2894         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2895                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2896                                                  dialog_token, status_code,
2897                                                  skb);
2898                 send_direct = true;
2899                 break;
2900         default:
2901                 ret = -ENOTSUPP;
2902                 break;
2903         }
2904
2905         if (ret < 0)
2906                 goto fail;
2907
2908         if (extra_ies_len)
2909                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2910
2911         /* the TDLS link IE is always added last */
2912         switch (action_code) {
2913         case WLAN_TDLS_SETUP_REQUEST:
2914         case WLAN_TDLS_SETUP_CONFIRM:
2915         case WLAN_TDLS_TEARDOWN:
2916         case WLAN_TDLS_DISCOVERY_REQUEST:
2917                 /* we are the initiator */
2918                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2919                                            sdata->u.mgd.bssid);
2920                 break;
2921         case WLAN_TDLS_SETUP_RESPONSE:
2922         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2923                 /* we are the responder */
2924                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2925                                            sdata->u.mgd.bssid);
2926                 break;
2927         default:
2928                 ret = -ENOTSUPP;
2929                 goto fail;
2930         }
2931
2932         if (send_direct) {
2933                 ieee80211_tx_skb(sdata, skb);
2934                 return 0;
2935         }
2936
2937         /*
2938          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2939          * we should default to AC_VI.
2940          */
2941         switch (action_code) {
2942         case WLAN_TDLS_SETUP_REQUEST:
2943         case WLAN_TDLS_SETUP_RESPONSE:
2944                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2945                 skb->priority = 2;
2946                 break;
2947         default:
2948                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2949                 skb->priority = 5;
2950                 break;
2951         }
2952
2953         /* disable bottom halves when entering the Tx path */
2954         local_bh_disable();
2955         ret = ieee80211_subif_start_xmit(skb, dev);
2956         local_bh_enable();
2957
2958         return ret;
2959
2960 fail:
2961         dev_kfree_skb(skb);
2962         return ret;
2963 }
2964
2965 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2966                                u8 *peer, enum nl80211_tdls_operation oper)
2967 {
2968         struct sta_info *sta;
2969         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2970
2971         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2972                 return -ENOTSUPP;
2973
2974         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2975                 return -EINVAL;
2976
2977         tdls_dbg(sdata, "TDLS oper %d peer %pM\n", oper, peer);
2978
2979         switch (oper) {
2980         case NL80211_TDLS_ENABLE_LINK:
2981                 rcu_read_lock();
2982                 sta = sta_info_get(sdata, peer);
2983                 if (!sta) {
2984                         rcu_read_unlock();
2985                         return -ENOLINK;
2986                 }
2987
2988                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2989                 rcu_read_unlock();
2990                 break;
2991         case NL80211_TDLS_DISABLE_LINK:
2992                 return sta_info_destroy_addr(sdata, peer);
2993         case NL80211_TDLS_TEARDOWN:
2994         case NL80211_TDLS_SETUP:
2995         case NL80211_TDLS_DISCOVERY_REQ:
2996                 /* We don't support in-driver setup/teardown/discovery */
2997                 return -ENOTSUPP;
2998         default:
2999                 return -ENOTSUPP;
3000         }
3001
3002         return 0;
3003 }
3004
3005 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3006                                   const u8 *peer, u64 *cookie)
3007 {
3008         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3009         struct ieee80211_local *local = sdata->local;
3010         struct ieee80211_qos_hdr *nullfunc;
3011         struct sk_buff *skb;
3012         int size = sizeof(*nullfunc);
3013         __le16 fc;
3014         bool qos;
3015         struct ieee80211_tx_info *info;
3016         struct sta_info *sta;
3017         struct ieee80211_chanctx_conf *chanctx_conf;
3018         enum ieee80211_band band;
3019
3020         rcu_read_lock();
3021         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3022         if (WARN_ON(!chanctx_conf)) {
3023                 rcu_read_unlock();
3024                 return -EINVAL;
3025         }
3026         band = chanctx_conf->channel->band;
3027         sta = sta_info_get(sdata, peer);
3028         if (sta) {
3029                 qos = test_sta_flag(sta, WLAN_STA_WME);
3030         } else {
3031                 rcu_read_unlock();
3032                 return -ENOLINK;
3033         }
3034
3035         if (qos) {
3036                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3037                                  IEEE80211_STYPE_QOS_NULLFUNC |
3038                                  IEEE80211_FCTL_FROMDS);
3039         } else {
3040                 size -= 2;
3041                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3042                                  IEEE80211_STYPE_NULLFUNC |
3043                                  IEEE80211_FCTL_FROMDS);
3044         }
3045
3046         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3047         if (!skb) {
3048                 rcu_read_unlock();
3049                 return -ENOMEM;
3050         }
3051
3052         skb->dev = dev;
3053
3054         skb_reserve(skb, local->hw.extra_tx_headroom);
3055
3056         nullfunc = (void *) skb_put(skb, size);
3057         nullfunc->frame_control = fc;
3058         nullfunc->duration_id = 0;
3059         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3060         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3061         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3062         nullfunc->seq_ctrl = 0;
3063
3064         info = IEEE80211_SKB_CB(skb);
3065
3066         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3067                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3068
3069         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3070         skb->priority = 7;
3071         if (qos)
3072                 nullfunc->qos_ctrl = cpu_to_le16(7);
3073
3074         local_bh_disable();
3075         ieee80211_xmit(sdata, skb, band);
3076         local_bh_enable();
3077         rcu_read_unlock();
3078
3079         *cookie = (unsigned long) skb;
3080         return 0;
3081 }
3082
3083 static struct ieee80211_channel *
3084 ieee80211_cfg_get_channel(struct wiphy *wiphy, struct wireless_dev *wdev,
3085                           enum nl80211_channel_type *type)
3086 {
3087         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3088         struct ieee80211_chanctx_conf *chanctx_conf;
3089         struct ieee80211_channel *chan = NULL;
3090
3091         rcu_read_lock();
3092         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3093         if (chanctx_conf) {
3094                 *type = chanctx_conf->channel_type;
3095                 chan = chanctx_conf->channel;
3096         }
3097         rcu_read_unlock();
3098
3099         return chan;
3100 }
3101
3102 #ifdef CONFIG_PM
3103 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3104 {
3105         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3106 }
3107 #endif
3108
3109 struct cfg80211_ops mac80211_config_ops = {
3110         .add_virtual_intf = ieee80211_add_iface,
3111         .del_virtual_intf = ieee80211_del_iface,
3112         .change_virtual_intf = ieee80211_change_iface,
3113         .start_p2p_device = ieee80211_start_p2p_device,
3114         .stop_p2p_device = ieee80211_stop_p2p_device,
3115         .add_key = ieee80211_add_key,
3116         .del_key = ieee80211_del_key,
3117         .get_key = ieee80211_get_key,
3118         .set_default_key = ieee80211_config_default_key,
3119         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3120         .start_ap = ieee80211_start_ap,
3121         .change_beacon = ieee80211_change_beacon,
3122         .stop_ap = ieee80211_stop_ap,
3123         .add_station = ieee80211_add_station,
3124         .del_station = ieee80211_del_station,
3125         .change_station = ieee80211_change_station,
3126         .get_station = ieee80211_get_station,
3127         .dump_station = ieee80211_dump_station,
3128         .dump_survey = ieee80211_dump_survey,
3129 #ifdef CONFIG_MAC80211_MESH
3130         .add_mpath = ieee80211_add_mpath,
3131         .del_mpath = ieee80211_del_mpath,
3132         .change_mpath = ieee80211_change_mpath,
3133         .get_mpath = ieee80211_get_mpath,
3134         .dump_mpath = ieee80211_dump_mpath,
3135         .update_mesh_config = ieee80211_update_mesh_config,
3136         .get_mesh_config = ieee80211_get_mesh_config,
3137         .join_mesh = ieee80211_join_mesh,
3138         .leave_mesh = ieee80211_leave_mesh,
3139 #endif
3140         .change_bss = ieee80211_change_bss,
3141         .set_txq_params = ieee80211_set_txq_params,
3142         .set_monitor_channel = ieee80211_set_monitor_channel,
3143         .suspend = ieee80211_suspend,
3144         .resume = ieee80211_resume,
3145         .scan = ieee80211_scan,
3146         .sched_scan_start = ieee80211_sched_scan_start,
3147         .sched_scan_stop = ieee80211_sched_scan_stop,
3148         .auth = ieee80211_auth,
3149         .assoc = ieee80211_assoc,
3150         .deauth = ieee80211_deauth,
3151         .disassoc = ieee80211_disassoc,
3152         .join_ibss = ieee80211_join_ibss,
3153         .leave_ibss = ieee80211_leave_ibss,
3154         .set_wiphy_params = ieee80211_set_wiphy_params,
3155         .set_tx_power = ieee80211_set_tx_power,
3156         .get_tx_power = ieee80211_get_tx_power,
3157         .set_wds_peer = ieee80211_set_wds_peer,
3158         .rfkill_poll = ieee80211_rfkill_poll,
3159         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3160         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3161         .set_power_mgmt = ieee80211_set_power_mgmt,
3162         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3163         .remain_on_channel = ieee80211_remain_on_channel,
3164         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3165         .mgmt_tx = ieee80211_mgmt_tx,
3166         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3167         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3168         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3169         .set_antenna = ieee80211_set_antenna,
3170         .get_antenna = ieee80211_get_antenna,
3171         .set_ringparam = ieee80211_set_ringparam,
3172         .get_ringparam = ieee80211_get_ringparam,
3173         .set_rekey_data = ieee80211_set_rekey_data,
3174         .tdls_oper = ieee80211_tdls_oper,
3175         .tdls_mgmt = ieee80211_tdls_mgmt,
3176         .probe_client = ieee80211_probe_client,
3177         .set_noack_map = ieee80211_set_noack_map,
3178 #ifdef CONFIG_PM
3179         .set_wakeup = ieee80211_set_wakeup,
3180 #endif
3181         .get_et_sset_count = ieee80211_get_et_sset_count,
3182         .get_et_stats = ieee80211_get_et_stats,
3183         .get_et_strings = ieee80211_get_et_strings,
3184         .get_channel = ieee80211_cfg_get_channel,
3185 };