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 net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  24                                               enum nl80211_iftype type,
  25                                               u32 *flags,
  26                                               struct vif_params *params)
  27 {
  28         struct ieee80211_local *local = wiphy_priv(wiphy);
  29         struct net_device *dev;
  30         struct ieee80211_sub_if_data *sdata;
  31         int err;
  32
  33         err = ieee80211_if_add(local, name, &dev, type, params);
  34         if (err)
  35                 return ERR_PTR(err);
  36
  37         if (type == NL80211_IFTYPE_MONITOR && flags) {
  38                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  39                 sdata->u.mntr_flags = *flags;
  40         }
  41
  42         return dev;
  43 }
  44
  45 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  46 {
  47         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  48
  49         return 0;
  50 }
  51
  52 static int ieee80211_change_iface(struct wiphy *wiphy,
  53                                   struct net_device *dev,
  54                                   enum nl80211_iftype type, u32 *flags,
  55                                   struct vif_params *params)
  56 {
  57         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  58         int ret;
  59
  60         ret = ieee80211_if_change_type(sdata, type);
  61         if (ret)
  62                 return ret;
  63
  64         if (type == NL80211_IFTYPE_AP_VLAN &&
  65             params && params->use_4addr == 0)
  66                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  67         else if (type == NL80211_IFTYPE_STATION &&
  68                  params && params->use_4addr >= 0)
  69                 sdata->u.mgd.use_4addr = params->use_4addr;
  70
  71         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  72                 struct ieee80211_local *local = sdata->local;
  73
  74                 if (ieee80211_sdata_running(sdata)) {
  75                         /*
  76                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  77                          * changed while the interface is up.
  78                          * Else we would need to add a lot of cruft
  79                          * to update everything:
  80                          *      cooked_mntrs, monitor and all fif_* counters
  81                          *      reconfigure hardware
  82                          */
  83                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  84                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  85                                 return -EBUSY;
  86
  87                         ieee80211_adjust_monitor_flags(sdata, -1);
  88                         sdata->u.mntr_flags = *flags;
  89                         ieee80211_adjust_monitor_flags(sdata, 1);
  90
  91                         ieee80211_configure_filter(local);
  92                 } else {
  93                         /*
  94                          * Because the interface is down, ieee80211_do_stop
  95                          * and ieee80211_do_open take care of "everything"
  96                          * mentioned in the comment above.
  97                          */
  98                         sdata->u.mntr_flags = *flags;
  99                 }
 100         }
 101
 102         return 0;
 103 }
 104
 105 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 106                                   struct net_device *dev,
 107                                   u16 noack_map)
 108 {
 109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 110
 111         sdata->noack_map = noack_map;
 112         return 0;
 113 }
 114
 115 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 116                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 117                              struct key_params *params)
 118 {
 119         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 120         struct sta_info *sta = NULL;
 121         struct ieee80211_key *key;
 122         int err;
 123
 124         if (!ieee80211_sdata_running(sdata))
 125                 return -ENETDOWN;
 126
 127         /* reject WEP and TKIP keys if WEP failed to initialize */
 128         switch (params->cipher) {
 129         case WLAN_CIPHER_SUITE_WEP40:
 130         case WLAN_CIPHER_SUITE_TKIP:
 131         case WLAN_CIPHER_SUITE_WEP104:
 132                 if (IS_ERR(sdata->local->wep_tx_tfm))
 133                         return -EINVAL;
 134                 break;
 135         default:
 136                 break;
 137         }
 138
 139         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 140                                   params->key, params->seq_len, params->seq);
 141         if (IS_ERR(key))
 142                 return PTR_ERR(key);
 143
 144         if (pairwise)
 145                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 146
 147         mutex_lock(&sdata->local->sta_mtx);
 148
 149         if (mac_addr) {
 150                 if (ieee80211_vif_is_mesh(&sdata->vif))
 151                         sta = sta_info_get(sdata, mac_addr);
 152                 else
 153                         sta = sta_info_get_bss(sdata, mac_addr);
 154                 if (!sta) {
 155                         ieee80211_key_free(sdata->local, key);
 156                         err = -ENOENT;
 157                         goto out_unlock;
 158                 }
 159         }
 160
 161         err = ieee80211_key_link(key, sdata, sta);
 162         if (err)
 163                 ieee80211_key_free(sdata->local, key);
 164
 165  out_unlock:
 166         mutex_unlock(&sdata->local->sta_mtx);
 167
 168         return err;
 169 }
 170
 171 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 172                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 173 {
 174         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 175         struct ieee80211_local *local = sdata->local;
 176         struct sta_info *sta;
 177         struct ieee80211_key *key = NULL;
 178         int ret;
 179
 180         mutex_lock(&local->sta_mtx);
 181         mutex_lock(&local->key_mtx);
 182
 183         if (mac_addr) {
 184                 ret = -ENOENT;
 185
 186                 sta = sta_info_get_bss(sdata, mac_addr);
 187                 if (!sta)
 188                         goto out_unlock;
 189
 190                 if (pairwise)
 191                         key = key_mtx_dereference(local, sta->ptk);
 192                 else
 193                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 194         } else
 195                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 196
 197         if (!key) {
 198                 ret = -ENOENT;
 199                 goto out_unlock;
 200         }
 201
 202         __ieee80211_key_free(key);
 203
 204         ret = 0;
 205  out_unlock:
 206         mutex_unlock(&local->key_mtx);
 207         mutex_unlock(&local->sta_mtx);
 208
 209         return ret;
 210 }
 211
 212 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 213                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 214                              void *cookie,
 215                              void (*callback)(void *cookie,
 216                                               struct key_params *params))
 217 {
 218         struct ieee80211_sub_if_data *sdata;
 219         struct sta_info *sta = NULL;
 220         u8 seq[6] = {0};
 221         struct key_params params;
 222         struct ieee80211_key *key = NULL;
 223         u64 pn64;
 224         u32 iv32;
 225         u16 iv16;
 226         int err = -ENOENT;
 227
 228         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 229
 230         rcu_read_lock();
 231
 232         if (mac_addr) {
 233                 sta = sta_info_get_bss(sdata, mac_addr);
 234                 if (!sta)
 235                         goto out;
 236
 237                 if (pairwise)
 238                         key = rcu_dereference(sta->ptk);
 239                 else if (key_idx < NUM_DEFAULT_KEYS)
 240                         key = rcu_dereference(sta->gtk[key_idx]);
 241         } else
 242                 key = rcu_dereference(sdata->keys[key_idx]);
 243
 244         if (!key)
 245                 goto out;
 246
 247         memset(&params, 0, sizeof(params));
 248
 249         params.cipher = key->conf.cipher;
 250
 251         switch (key->conf.cipher) {
 252         case WLAN_CIPHER_SUITE_TKIP:
 253                 iv32 = key->u.tkip.tx.iv32;
 254                 iv16 = key->u.tkip.tx.iv16;
 255
 256                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 257                         drv_get_tkip_seq(sdata->local,
 258                                          key->conf.hw_key_idx,
 259                                          &iv32, &iv16);
 260
 261                 seq[0] = iv16 & 0xff;
 262                 seq[1] = (iv16 >> 8) & 0xff;
 263                 seq[2] = iv32 & 0xff;
 264                 seq[3] = (iv32 >> 8) & 0xff;
 265                 seq[4] = (iv32 >> 16) & 0xff;
 266                 seq[5] = (iv32 >> 24) & 0xff;
 267                 params.seq = seq;
 268                 params.seq_len = 6;
 269                 break;
 270         case WLAN_CIPHER_SUITE_CCMP:
 271                 pn64 = atomic64_read(&key->u.ccmp.tx_pn);
 272                 seq[0] = pn64;
 273                 seq[1] = pn64 >> 8;
 274                 seq[2] = pn64 >> 16;
 275                 seq[3] = pn64 >> 24;
 276                 seq[4] = pn64 >> 32;
 277                 seq[5] = pn64 >> 40;
 278                 params.seq = seq;
 279                 params.seq_len = 6;
 280                 break;
 281         case WLAN_CIPHER_SUITE_AES_CMAC:
 282                 pn64 = atomic64_read(&key->u.aes_cmac.tx_pn);
 283                 seq[0] = pn64;
 284                 seq[1] = pn64 >> 8;
 285                 seq[2] = pn64 >> 16;
 286                 seq[3] = pn64 >> 24;
 287                 seq[4] = pn64 >> 32;
 288                 seq[5] = pn64 >> 40;
 289                 params.seq = seq;
 290                 params.seq_len = 6;
 291                 break;
 292         }
 293
 294         params.key = key->conf.key;
 295         params.key_len = key->conf.keylen;
 296
 297         callback(cookie, &params);
 298         err = 0;
 299
 300  out:
 301         rcu_read_unlock();
 302         return err;
 303 }
 304
 305 static int ieee80211_config_default_key(struct wiphy *wiphy,
 306                                         struct net_device *dev,
 307                                         u8 key_idx, bool uni,
 308                                         bool multi)
 309 {
 310         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 311
 312         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 313
 314         return 0;
 315 }
 316
 317 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 318                                              struct net_device *dev,
 319                                              u8 key_idx)
 320 {
 321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 322
 323         ieee80211_set_default_mgmt_key(sdata, key_idx);
 324
 325         return 0;
 326 }
 327
 328 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 329 {
 330         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 331                 struct ieee80211_supported_band *sband;
 332                 sband = sta->local->hw.wiphy->bands[
 333                                 sta->local->hw.conf.channel->band];
 334                 rate->legacy = sband->bitrates[idx].bitrate;
 335         } else
 336                 rate->mcs = idx;
 337 }
 338
 339 void sta_set_rate_info_tx(struct sta_info *sta,
 340                           const struct ieee80211_tx_rate *rate,
 341                           struct rate_info *rinfo)
 342 {
 343         rinfo->flags = 0;
 344         if (rate->flags & IEEE80211_TX_RC_MCS)
 345                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 346         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 347                 rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 348         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 349                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 350         rate_idx_to_bitrate(rinfo, sta, rate->idx);
 351 }
 352
 353 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 354 {
 355         struct ieee80211_sub_if_data *sdata = sta->sdata;
 356         struct timespec uptime;
 357
 358         sinfo->generation = sdata->local->sta_generation;
 359
 360         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 361                         STATION_INFO_RX_BYTES |
 362                         STATION_INFO_TX_BYTES |
 363                         STATION_INFO_RX_PACKETS |
 364                         STATION_INFO_TX_PACKETS |
 365                         STATION_INFO_TX_RETRIES |
 366                         STATION_INFO_TX_FAILED |
 367                         STATION_INFO_TX_BITRATE |
 368                         STATION_INFO_RX_BITRATE |
 369                         STATION_INFO_RX_DROP_MISC |
 370                         STATION_INFO_BSS_PARAM |
 371                         STATION_INFO_CONNECTED_TIME |
 372                         STATION_INFO_STA_FLAGS |
 373                         STATION_INFO_BEACON_LOSS_COUNT;
 374
 375         do_posix_clock_monotonic_gettime(&uptime);
 376         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 377
 378         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 379         sinfo->rx_bytes = sta->rx_bytes;
 380         sinfo->tx_bytes = sta->tx_bytes;
 381         sinfo->rx_packets = sta->rx_packets;
 382         sinfo->tx_packets = sta->tx_packets;
 383         sinfo->tx_retries = sta->tx_retry_count;
 384         sinfo->tx_failed = sta->tx_retry_failed;
 385         sinfo->rx_dropped_misc = sta->rx_dropped;
 386         sinfo->beacon_loss_count = sta->beacon_loss_count;
 387
 388         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 389             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 390                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 391                 sinfo->signal = (s8)sta->last_signal;
 392                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 393         }
 394
 395         sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate);
 396
 397         sinfo->rxrate.flags = 0;
 398         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 399                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 400         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 401                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 402         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 403                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 404         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 405
 406         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 407 #ifdef CONFIG_MAC80211_MESH
 408                 sinfo->filled |= STATION_INFO_LLID |
 409                                  STATION_INFO_PLID |
 410                                  STATION_INFO_PLINK_STATE;
 411
 412                 sinfo->llid = le16_to_cpu(sta->llid);
 413                 sinfo->plid = le16_to_cpu(sta->plid);
 414                 sinfo->plink_state = sta->plink_state;
 415                 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
 416                         sinfo->filled |= STATION_INFO_T_OFFSET;
 417                         sinfo->t_offset = sta->t_offset;
 418                 }
 419 #endif
 420         }
 421
 422         sinfo->bss_param.flags = 0;
 423         if (sdata->vif.bss_conf.use_cts_prot)
 424                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 425         if (sdata->vif.bss_conf.use_short_preamble)
 426                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 427         if (sdata->vif.bss_conf.use_short_slot)
 428                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 429         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 430         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 431
 432         sinfo->sta_flags.set = 0;
 433         sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
 434                                 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
 435                                 BIT(NL80211_STA_FLAG_WME) |
 436                                 BIT(NL80211_STA_FLAG_MFP) |
 437                                 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
 438                                 BIT(NL80211_STA_FLAG_TDLS_PEER);
 439         if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 440                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
 441         if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
 442                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
 443         if (test_sta_flag(sta, WLAN_STA_WME))
 444                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
 445         if (test_sta_flag(sta, WLAN_STA_MFP))
 446                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
 447         if (test_sta_flag(sta, WLAN_STA_AUTH))
 448                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
 449         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 450                 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
 451 }
 452
 453
 454 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 455                                  int idx, u8 *mac, struct station_info *sinfo)
 456 {
 457         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 458         struct sta_info *sta;
 459         int ret = -ENOENT;
 460
 461         rcu_read_lock();
 462
 463         sta = sta_info_get_by_idx(sdata, idx);
 464         if (sta) {
 465                 ret = 0;
 466                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 467                 sta_set_sinfo(sta, sinfo);
 468         }
 469
 470         rcu_read_unlock();
 471
 472         return ret;
 473 }
 474
 475 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 476                                  int idx, struct survey_info *survey)
 477 {
 478         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 479
 480         return drv_get_survey(local, idx, survey);
 481 }
 482
 483 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 484                                  u8 *mac, struct station_info *sinfo)
 485 {
 486         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 487         struct sta_info *sta;
 488         int ret = -ENOENT;
 489
 490         rcu_read_lock();
 491
 492         sta = sta_info_get_bss(sdata, mac);
 493         if (sta) {
 494                 ret = 0;
 495                 sta_set_sinfo(sta, sinfo);
 496         }
 497
 498         rcu_read_unlock();
 499
 500         return ret;
 501 }
 502
 503 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 504                                     const u8 *resp, size_t resp_len)
 505 {
 506         struct sk_buff *new, *old;
 507
 508         if (!resp || !resp_len)
 509                 return 1;
 510
 511         old = rtnl_dereference(sdata->u.ap.probe_resp);
 512
 513         new = dev_alloc_skb(resp_len);
 514         if (!new)
 515                 return -ENOMEM;
 516
 517         memcpy(skb_put(new, resp_len), resp, resp_len);
 518
 519         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 520         if (old) {
 521                 /* TODO: use call_rcu() */
 522                 synchronize_rcu();
 523                 dev_kfree_skb(old);
 524         }
 525
 526         return 0;
 527 }
 528
 529 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 530                                    struct cfg80211_beacon_data *params)
 531 {
 532         struct beacon_data *new, *old;
 533         int new_head_len, new_tail_len;
 534         int size, err;
 535         u32 changed = BSS_CHANGED_BEACON;
 536
 537         old = rtnl_dereference(sdata->u.ap.beacon);
 538
 539         /* Need to have a beacon head if we don't have one yet */
 540         if (!params->head && !old)
 541                 return -EINVAL;
 542
 543         /* new or old head? */
 544         if (params->head)
 545                 new_head_len = params->head_len;
 546         else
 547                 new_head_len = old->head_len;
 548
 549         /* new or old tail? */
 550         if (params->tail || !old)
 551                 /* params->tail_len will be zero for !params->tail */
 552                 new_tail_len = params->tail_len;
 553         else
 554                 new_tail_len = old->tail_len;
 555
 556         size = sizeof(*new) + new_head_len + new_tail_len;
 557
 558         new = kzalloc(size, GFP_KERNEL);
 559         if (!new)
 560                 return -ENOMEM;
 561
 562         /* start filling the new info now */
 563
 564         /*
 565          * pointers go into the block we allocated,
 566          * memory is | beacon_data | head | tail |
 567          */
 568         new->head = ((u8 *) new) + sizeof(*new);
 569         new->tail = new->head + new_head_len;
 570         new->head_len = new_head_len;
 571         new->tail_len = new_tail_len;
 572
 573         /* copy in head */
 574         if (params->head)
 575                 memcpy(new->head, params->head, new_head_len);
 576         else
 577                 memcpy(new->head, old->head, new_head_len);
 578
 579         /* copy in optional tail */
 580         if (params->tail)
 581                 memcpy(new->tail, params->tail, new_tail_len);
 582         else
 583                 if (old)
 584                         memcpy(new->tail, old->tail, new_tail_len);
 585
 586         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 587                                        params->probe_resp_len);
 588         if (err < 0)
 589                 return err;
 590         if (err == 0)
 591                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 592
 593         rcu_assign_pointer(sdata->u.ap.beacon, new);
 594
 595         if (old)
 596                 kfree_rcu(old, rcu_head);
 597
 598         return changed;
 599 }
 600
 601 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 602                               struct cfg80211_ap_settings *params)
 603 {
 604         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 605         struct beacon_data *old;
 606         struct ieee80211_sub_if_data *vlan;
 607         u32 changed = BSS_CHANGED_BEACON_INT |
 608                       BSS_CHANGED_BEACON_ENABLED |
 609                       BSS_CHANGED_BEACON |
 610                       BSS_CHANGED_SSID;
 611         int err;
 612
 613         old = rtnl_dereference(sdata->u.ap.beacon);
 614         if (old)
 615                 return -EALREADY;
 616
 617         /*
 618          * Apply control port protocol, this allows us to
 619          * not encrypt dynamic WEP control frames.
 620          */
 621         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 622         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 623         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 624                 vlan->control_port_protocol =
 625                         params->crypto.control_port_ethertype;
 626                 vlan->control_port_no_encrypt =
 627                         params->crypto.control_port_no_encrypt;
 628         }
 629
 630         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 631         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 632
 633         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 634         if (params->ssid_len)
 635                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 636                        params->ssid_len);
 637         sdata->vif.bss_conf.hidden_ssid =
 638                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 639
 640         err = ieee80211_assign_beacon(sdata, &params->beacon);
 641         if (err < 0)
 642                 return err;
 643         changed |= err;
 644
 645         ieee80211_bss_info_change_notify(sdata, changed);
 646
 647         netif_carrier_on(dev);
 648         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 649                 netif_carrier_on(vlan->dev);
 650
 651         return 0;
 652 }
 653
 654 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 655                                    struct cfg80211_beacon_data *params)
 656 {
 657         struct ieee80211_sub_if_data *sdata;
 658         struct beacon_data *old;
 659         int err;
 660
 661         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 662
 663         old = rtnl_dereference(sdata->u.ap.beacon);
 664         if (!old)
 665                 return -ENOENT;
 666
 667         err = ieee80211_assign_beacon(sdata, params);
 668         if (err < 0)
 669                 return err;
 670         ieee80211_bss_info_change_notify(sdata, err);
 671         return 0;
 672 }
 673
 674 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 675 {
 676         struct ieee80211_sub_if_data *sdata, *vlan;
 677         struct beacon_data *old;
 678
 679         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 680
 681         old = rtnl_dereference(sdata->u.ap.beacon);
 682         if (!old)
 683                 return -ENOENT;
 684
 685         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 686                 netif_carrier_off(vlan->dev);
 687         netif_carrier_off(dev);
 688
 689         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 690
 691         kfree_rcu(old, rcu_head);
 692
 693         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 694
 695         return 0;
 696 }
 697
 698 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 699 struct iapp_layer2_update {
 700         u8 da[ETH_ALEN];        /* broadcast */
 701         u8 sa[ETH_ALEN];        /* STA addr */
 702         __be16 len;             /* 6 */
 703         u8 dsap;                /* 0 */
 704         u8 ssap;                /* 0 */
 705         u8 control;
 706         u8 xid_info[3];
 707 } __packed;
 708
 709 static void ieee80211_send_layer2_update(struct sta_info *sta)
 710 {
 711         struct iapp_layer2_update *msg;
 712         struct sk_buff *skb;
 713
 714         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 715          * bridge devices */
 716
 717         skb = dev_alloc_skb(sizeof(*msg));
 718         if (!skb)
 719                 return;
 720         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 721
 722         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 723          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 724
 725         memset(msg->da, 0xff, ETH_ALEN);
 726         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 727         msg->len = htons(6);
 728         msg->dsap = 0;
 729         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 730         msg->control = 0xaf;    /* XID response lsb.1111F101.
 731                                  * F=0 (no poll command; unsolicited frame) */
 732         msg->xid_info[0] = 0x81;        /* XID format identifier */
 733         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 734         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 735
 736         skb->dev = sta->sdata->dev;
 737         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 738         memset(skb->cb, 0, sizeof(skb->cb));
 739         netif_rx_ni(skb);
 740 }
 741
 742 static int sta_apply_parameters(struct ieee80211_local *local,
 743                                 struct sta_info *sta,
 744                                 struct station_parameters *params)
 745 {
 746         int ret = 0;
 747         u32 rates;
 748         int i, j;
 749         struct ieee80211_supported_band *sband;
 750         struct ieee80211_sub_if_data *sdata = sta->sdata;
 751         u32 mask, set;
 752
 753         sband = local->hw.wiphy->bands[local->oper_channel->band];
 754
 755         mask = params->sta_flags_mask;
 756         set = params->sta_flags_set;
 757
 758         /*
 759          * In mesh mode, we can clear AUTHENTICATED flag but must
 760          * also make ASSOCIATED follow appropriately for the driver
 761          * API. See also below, after AUTHORIZED changes.
 762          */
 763         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 764                 /* cfg80211 should not allow this in non-mesh modes */
 765                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 766                         return -EINVAL;
 767
 768                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 769                     !test_sta_flag(sta, WLAN_STA_AUTH)) {
 770                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 771                         if (ret)
 772                                 return ret;
 773                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 774                         if (ret)
 775                                 return ret;
 776                 }
 777         }
 778
 779         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 780                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 781                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 782                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 783                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 784                 if (ret)
 785                         return ret;
 786         }
 787
 788         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 789                 /* cfg80211 should not allow this in non-mesh modes */
 790                 if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif)))
 791                         return -EINVAL;
 792
 793                 if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 794                     test_sta_flag(sta, WLAN_STA_AUTH)) {
 795                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 796                         if (ret)
 797                                 return ret;
 798                         ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 799                         if (ret)
 800                                 return ret;
 801                 }
 802         }
 803
 804
 805         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 806                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 807                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 808                 else
 809                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
 810         }
 811
 812         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 813                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 814                         set_sta_flag(sta, WLAN_STA_WME);
 815                         sta->sta.wme = true;
 816                 } else {
 817                         clear_sta_flag(sta, WLAN_STA_WME);
 818                         sta->sta.wme = false;
 819                 }
 820         }
 821
 822         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 823                 if (set & BIT(NL80211_STA_FLAG_MFP))
 824                         set_sta_flag(sta, WLAN_STA_MFP);
 825                 else
 826                         clear_sta_flag(sta, WLAN_STA_MFP);
 827         }
 828
 829         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
 830                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
 831                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
 832                 else
 833                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
 834         }
 835
 836         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
 837                 sta->sta.uapsd_queues = params->uapsd_queues;
 838                 sta->sta.max_sp = params->max_sp;
 839         }
 840
 841         /*
 842          * cfg80211 validates this (1-2007) and allows setting the AID
 843          * only when creating a new station entry
 844          */
 845         if (params->aid)
 846                 sta->sta.aid = params->aid;
 847
 848         /*
 849          * FIXME: updating the following information is racy when this
 850          *        function is called from ieee80211_change_station().
 851          *        However, all this information should be static so
 852          *        maybe we should just reject attemps to change it.
 853          */
 854
 855         if (params->listen_interval >= 0)
 856                 sta->listen_interval = params->listen_interval;
 857
 858         if (params->supported_rates) {
 859                 rates = 0;
 860
 861                 for (i = 0; i < params->supported_rates_len; i++) {
 862                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 863                         for (j = 0; j < sband->n_bitrates; j++) {
 864                                 if (sband->bitrates[j].bitrate == rate)
 865                                         rates |= BIT(j);
 866                         }
 867                 }
 868                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 869         }
 870
 871         if (params->ht_capa)
 872                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
 873                                                   params->ht_capa,
 874                                                   &sta->sta.ht_cap);
 875
 876         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 877 #ifdef CONFIG_MAC80211_MESH
 878                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 879                         switch (params->plink_state) {
 880                         case NL80211_PLINK_LISTEN:
 881                         case NL80211_PLINK_ESTAB:
 882                         case NL80211_PLINK_BLOCKED:
 883                                 sta->plink_state = params->plink_state;
 884                                 break;
 885                         default:
 886                                 /*  nothing  */
 887                                 break;
 888                         }
 889                 else
 890                         switch (params->plink_action) {
 891                         case PLINK_ACTION_OPEN:
 892                                 mesh_plink_open(sta);
 893                                 break;
 894                         case PLINK_ACTION_BLOCK:
 895                                 mesh_plink_block(sta);
 896                                 break;
 897                         }
 898 #endif
 899         }
 900
 901         return 0;
 902 }
 903
 904 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 905                                  u8 *mac, struct station_parameters *params)
 906 {
 907         struct ieee80211_local *local = wiphy_priv(wiphy);
 908         struct sta_info *sta;
 909         struct ieee80211_sub_if_data *sdata;
 910         int err;
 911         int layer2_update;
 912
 913         if (params->vlan) {
 914                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 915
 916                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 917                     sdata->vif.type != NL80211_IFTYPE_AP)
 918                         return -EINVAL;
 919         } else
 920                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 921
 922         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 923                 return -EINVAL;
 924
 925         if (is_multicast_ether_addr(mac))
 926                 return -EINVAL;
 927
 928         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 929         if (!sta)
 930                 return -ENOMEM;
 931
 932         sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
 933         sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
 934
 935         err = sta_apply_parameters(local, sta, params);
 936         if (err) {
 937                 sta_info_free(local, sta);
 938                 return err;
 939         }
 940
 941         /*
 942          * for TDLS, rate control should be initialized only when supported
 943          * rates are known.
 944          */
 945         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER))
 946                 rate_control_rate_init(sta);
 947
 948         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 949                 sdata->vif.type == NL80211_IFTYPE_AP;
 950
 951         err = sta_info_insert_rcu(sta);
 952         if (err) {
 953                 rcu_read_unlock();
 954                 return err;
 955         }
 956
 957         if (layer2_update)
 958                 ieee80211_send_layer2_update(sta);
 959
 960         rcu_read_unlock();
 961
 962         return 0;
 963 }
 964
 965 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 966                                  u8 *mac)
 967 {
 968         struct ieee80211_local *local = wiphy_priv(wiphy);
 969         struct ieee80211_sub_if_data *sdata;
 970
 971         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 972
 973         if (mac)
 974                 return sta_info_destroy_addr_bss(sdata, mac);
 975
 976         sta_info_flush(local, sdata);
 977         return 0;
 978 }
 979
 980 static int ieee80211_change_station(struct wiphy *wiphy,
 981                                     struct net_device *dev,
 982                                     u8 *mac,
 983                                     struct station_parameters *params)
 984 {
 985         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 986         struct ieee80211_local *local = wiphy_priv(wiphy);
 987         struct sta_info *sta;
 988         struct ieee80211_sub_if_data *vlansdata;
 989         int err;
 990
 991         mutex_lock(&local->sta_mtx);
 992
 993         sta = sta_info_get_bss(sdata, mac);
 994         if (!sta) {
 995                 mutex_unlock(&local->sta_mtx);
 996                 return -ENOENT;
 997         }
 998
 999         /* in station mode, supported rates are only valid with TDLS */
1000         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1001             params->supported_rates &&
1002             !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1003                 mutex_unlock(&local->sta_mtx);
1004                 return -EINVAL;
1005         }
1006
1007         if (params->vlan && params->vlan != sta->sdata->dev) {
1008                 bool prev_4addr = false;
1009                 bool new_4addr = false;
1010
1011                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1012
1013                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1014                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
1015                         mutex_unlock(&local->sta_mtx);
1016                         return -EINVAL;
1017                 }
1018
1019                 if (params->vlan->ieee80211_ptr->use_4addr) {
1020                         if (vlansdata->u.vlan.sta) {
1021                                 mutex_unlock(&local->sta_mtx);
1022                                 return -EBUSY;
1023                         }
1024
1025                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1026                         new_4addr = true;
1027                 }
1028
1029                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1030                     sta->sdata->u.vlan.sta) {
1031                         rcu_assign_pointer(sta->sdata->u.vlan.sta, NULL);
1032                         prev_4addr = true;
1033                 }
1034
1035                 sta->sdata = vlansdata;
1036
1037                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1038                     prev_4addr != new_4addr) {
1039                         if (new_4addr)
1040                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1041                         else
1042                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1043                 }
1044
1045                 ieee80211_send_layer2_update(sta);
1046         }
1047
1048         err = sta_apply_parameters(local, sta, params);
1049         if (err) {
1050                 mutex_unlock(&local->sta_mtx);
1051                 return err;
1052         }
1053
1054         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates)
1055                 rate_control_rate_init(sta);
1056
1057         mutex_unlock(&local->sta_mtx);
1058
1059         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1060             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
1061                 ieee80211_recalc_ps(local, -1);
1062
1063         return 0;
1064 }
1065
1066 #ifdef CONFIG_MAC80211_MESH
1067 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1068                                  u8 *dst, u8 *next_hop)
1069 {
1070         struct ieee80211_sub_if_data *sdata;
1071         struct mesh_path *mpath;
1072         struct sta_info *sta;
1073         int err;
1074
1075         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1076
1077         rcu_read_lock();
1078         sta = sta_info_get(sdata, next_hop);
1079         if (!sta) {
1080                 rcu_read_unlock();
1081                 return -ENOENT;
1082         }
1083
1084         err = mesh_path_add(dst, sdata);
1085         if (err) {
1086                 rcu_read_unlock();
1087                 return err;
1088         }
1089
1090         mpath = mesh_path_lookup(dst, sdata);
1091         if (!mpath) {
1092                 rcu_read_unlock();
1093                 return -ENXIO;
1094         }
1095         mesh_path_fix_nexthop(mpath, sta);
1096
1097         rcu_read_unlock();
1098         return 0;
1099 }
1100
1101 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1102                                  u8 *dst)
1103 {
1104         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1105
1106         if (dst)
1107                 return mesh_path_del(dst, sdata);
1108
1109         mesh_path_flush_by_iface(sdata);
1110         return 0;
1111 }
1112
1113 static int ieee80211_change_mpath(struct wiphy *wiphy,
1114                                     struct net_device *dev,
1115                                     u8 *dst, u8 *next_hop)
1116 {
1117         struct ieee80211_sub_if_data *sdata;
1118         struct mesh_path *mpath;
1119         struct sta_info *sta;
1120
1121         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1122
1123         rcu_read_lock();
1124
1125         sta = sta_info_get(sdata, next_hop);
1126         if (!sta) {
1127                 rcu_read_unlock();
1128                 return -ENOENT;
1129         }
1130
1131         mpath = mesh_path_lookup(dst, sdata);
1132         if (!mpath) {
1133                 rcu_read_unlock();
1134                 return -ENOENT;
1135         }
1136
1137         mesh_path_fix_nexthop(mpath, sta);
1138
1139         rcu_read_unlock();
1140         return 0;
1141 }
1142
1143 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1144                             struct mpath_info *pinfo)
1145 {
1146         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1147
1148         if (next_hop_sta)
1149                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1150         else
1151                 memset(next_hop, 0, ETH_ALEN);
1152
1153         pinfo->generation = mesh_paths_generation;
1154
1155         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1156                         MPATH_INFO_SN |
1157                         MPATH_INFO_METRIC |
1158                         MPATH_INFO_EXPTIME |
1159                         MPATH_INFO_DISCOVERY_TIMEOUT |
1160                         MPATH_INFO_DISCOVERY_RETRIES |
1161                         MPATH_INFO_FLAGS;
1162
1163         pinfo->frame_qlen = mpath->frame_queue.qlen;
1164         pinfo->sn = mpath->sn;
1165         pinfo->metric = mpath->metric;
1166         if (time_before(jiffies, mpath->exp_time))
1167                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1168         pinfo->discovery_timeout =
1169                         jiffies_to_msecs(mpath->discovery_timeout);
1170         pinfo->discovery_retries = mpath->discovery_retries;
1171         pinfo->flags = 0;
1172         if (mpath->flags & MESH_PATH_ACTIVE)
1173                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1174         if (mpath->flags & MESH_PATH_RESOLVING)
1175                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1176         if (mpath->flags & MESH_PATH_SN_VALID)
1177                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1178         if (mpath->flags & MESH_PATH_FIXED)
1179                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1180         if (mpath->flags & MESH_PATH_RESOLVING)
1181                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1182
1183         pinfo->flags = mpath->flags;
1184 }
1185
1186 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1187                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1188
1189 {
1190         struct ieee80211_sub_if_data *sdata;
1191         struct mesh_path *mpath;
1192
1193         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1194
1195         rcu_read_lock();
1196         mpath = mesh_path_lookup(dst, sdata);
1197         if (!mpath) {
1198                 rcu_read_unlock();
1199                 return -ENOENT;
1200         }
1201         memcpy(dst, mpath->dst, ETH_ALEN);
1202         mpath_set_pinfo(mpath, next_hop, pinfo);
1203         rcu_read_unlock();
1204         return 0;
1205 }
1206
1207 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1208                                  int idx, u8 *dst, u8 *next_hop,
1209                                  struct mpath_info *pinfo)
1210 {
1211         struct ieee80211_sub_if_data *sdata;
1212         struct mesh_path *mpath;
1213
1214         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1215
1216         rcu_read_lock();
1217         mpath = mesh_path_lookup_by_idx(idx, sdata);
1218         if (!mpath) {
1219                 rcu_read_unlock();
1220                 return -ENOENT;
1221         }
1222         memcpy(dst, mpath->dst, ETH_ALEN);
1223         mpath_set_pinfo(mpath, next_hop, pinfo);
1224         rcu_read_unlock();
1225         return 0;
1226 }
1227
1228 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1229                                 struct net_device *dev,
1230                                 struct mesh_config *conf)
1231 {
1232         struct ieee80211_sub_if_data *sdata;
1233         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1234
1235         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1236         return 0;
1237 }
1238
1239 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1240 {
1241         return (mask >> (parm-1)) & 0x1;
1242 }
1243
1244 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1245                 const struct mesh_setup *setup)
1246 {
1247         u8 *new_ie;
1248         const u8 *old_ie;
1249         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1250                                         struct ieee80211_sub_if_data, u.mesh);
1251
1252         /* allocate information elements */
1253         new_ie = NULL;
1254         old_ie = ifmsh->ie;
1255
1256         if (setup->ie_len) {
1257                 new_ie = kmemdup(setup->ie, setup->ie_len,
1258                                 GFP_KERNEL);
1259                 if (!new_ie)
1260                         return -ENOMEM;
1261         }
1262         ifmsh->ie_len = setup->ie_len;
1263         ifmsh->ie = new_ie;
1264         kfree(old_ie);
1265
1266         /* now copy the rest of the setup parameters */
1267         ifmsh->mesh_id_len = setup->mesh_id_len;
1268         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1269         ifmsh->mesh_sp_id = setup->sync_method;
1270         ifmsh->mesh_pp_id = setup->path_sel_proto;
1271         ifmsh->mesh_pm_id = setup->path_metric;
1272         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1273         if (setup->is_authenticated)
1274                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1275         if (setup->is_secure)
1276                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1277
1278         /* mcast rate setting in Mesh Node */
1279         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1280                                                 sizeof(setup->mcast_rate));
1281
1282         return 0;
1283 }
1284
1285 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1286                                         struct net_device *dev, u32 mask,
1287                                         const struct mesh_config *nconf)
1288 {
1289         struct mesh_config *conf;
1290         struct ieee80211_sub_if_data *sdata;
1291         struct ieee80211_if_mesh *ifmsh;
1292
1293         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1294         ifmsh = &sdata->u.mesh;
1295
1296         /* Set the config options which we are interested in setting */
1297         conf = &(sdata->u.mesh.mshcfg);
1298         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1299                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1300         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1301                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1302         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1303                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1304         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1305                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1306         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1307                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1308         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1309                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1310         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1311                 conf->dot11MeshTTL = nconf->element_ttl;
1312         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1313                 conf->auto_open_plinks = nconf->auto_open_plinks;
1314         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1315                 conf->dot11MeshNbrOffsetMaxNeighbor =
1316                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1317         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1318                 conf->dot11MeshHWMPmaxPREQretries =
1319                         nconf->dot11MeshHWMPmaxPREQretries;
1320         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1321                 conf->path_refresh_time = nconf->path_refresh_time;
1322         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1323                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1324         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1325                 conf->dot11MeshHWMPactivePathTimeout =
1326                         nconf->dot11MeshHWMPactivePathTimeout;
1327         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1328                 conf->dot11MeshHWMPpreqMinInterval =
1329                         nconf->dot11MeshHWMPpreqMinInterval;
1330         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1331                 conf->dot11MeshHWMPperrMinInterval =
1332                         nconf->dot11MeshHWMPperrMinInterval;
1333         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1334                            mask))
1335                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1336                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1337         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1338                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1339                 ieee80211_mesh_root_setup(ifmsh);
1340         }
1341         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1342                 /* our current gate announcement implementation rides on root
1343                  * announcements, so require this ifmsh to also be a root node
1344                  * */
1345                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1346                     !conf->dot11MeshHWMPRootMode) {
1347                         conf->dot11MeshHWMPRootMode = 1;
1348                         ieee80211_mesh_root_setup(ifmsh);
1349                 }
1350                 conf->dot11MeshGateAnnouncementProtocol =
1351                         nconf->dot11MeshGateAnnouncementProtocol;
1352         }
1353         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
1354                 conf->dot11MeshHWMPRannInterval =
1355                         nconf->dot11MeshHWMPRannInterval;
1356         }
1357         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1358                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1359         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1360                 /* our RSSI threshold implementation is supported only for
1361                  * devices that report signal in dBm.
1362                  */
1363                 if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM))
1364                         return -ENOTSUPP;
1365                 conf->rssi_threshold = nconf->rssi_threshold;
1366         }
1367         return 0;
1368 }
1369
1370 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1371                                const struct mesh_config *conf,
1372                                const struct mesh_setup *setup)
1373 {
1374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1375         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1376         int err;
1377
1378         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1379         err = copy_mesh_setup(ifmsh, setup);
1380         if (err)
1381                 return err;
1382         ieee80211_start_mesh(sdata);
1383
1384         return 0;
1385 }
1386
1387 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1388 {
1389         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1390
1391         ieee80211_stop_mesh(sdata);
1392
1393         return 0;
1394 }
1395 #endif
1396
1397 static int ieee80211_change_bss(struct wiphy *wiphy,
1398                                 struct net_device *dev,
1399                                 struct bss_parameters *params)
1400 {
1401         struct ieee80211_sub_if_data *sdata;
1402         u32 changed = 0;
1403
1404         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1405
1406         if (params->use_cts_prot >= 0) {
1407                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1408                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1409         }
1410         if (params->use_short_preamble >= 0) {
1411                 sdata->vif.bss_conf.use_short_preamble =
1412                         params->use_short_preamble;
1413                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1414         }
1415
1416         if (!sdata->vif.bss_conf.use_short_slot &&
1417             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1418                 sdata->vif.bss_conf.use_short_slot = true;
1419                 changed |= BSS_CHANGED_ERP_SLOT;
1420         }
1421
1422         if (params->use_short_slot_time >= 0) {
1423                 sdata->vif.bss_conf.use_short_slot =
1424                         params->use_short_slot_time;
1425                 changed |= BSS_CHANGED_ERP_SLOT;
1426         }
1427
1428         if (params->basic_rates) {
1429                 int i, j;
1430                 u32 rates = 0;
1431                 struct ieee80211_local *local = wiphy_priv(wiphy);
1432                 struct ieee80211_supported_band *sband =
1433                         wiphy->bands[local->oper_channel->band];
1434
1435                 for (i = 0; i < params->basic_rates_len; i++) {
1436                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1437                         for (j = 0; j < sband->n_bitrates; j++) {
1438                                 if (sband->bitrates[j].bitrate == rate)
1439                                         rates |= BIT(j);
1440                         }
1441                 }
1442                 sdata->vif.bss_conf.basic_rates = rates;
1443                 changed |= BSS_CHANGED_BASIC_RATES;
1444         }
1445
1446         if (params->ap_isolate >= 0) {
1447                 if (params->ap_isolate)
1448                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1449                 else
1450                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1451         }
1452
1453         if (params->ht_opmode >= 0) {
1454                 sdata->vif.bss_conf.ht_operation_mode =
1455                         (u16) params->ht_opmode;
1456                 changed |= BSS_CHANGED_HT;
1457         }
1458
1459         ieee80211_bss_info_change_notify(sdata, changed);
1460
1461         return 0;
1462 }
1463
1464 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1465                                     struct net_device *dev,
1466                                     struct ieee80211_txq_params *params)
1467 {
1468         struct ieee80211_local *local = wiphy_priv(wiphy);
1469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1470         struct ieee80211_tx_queue_params p;
1471
1472         if (!local->ops->conf_tx)
1473                 return -EOPNOTSUPP;
1474
1475         if (local->hw.queues < IEEE80211_NUM_ACS)
1476                 return -EOPNOTSUPP;
1477
1478         memset(&p, 0, sizeof(p));
1479         p.aifs = params->aifs;
1480         p.cw_max = params->cwmax;
1481         p.cw_min = params->cwmin;
1482         p.txop = params->txop;
1483
1484         /*
1485          * Setting tx queue params disables u-apsd because it's only
1486          * called in master mode.
1487          */
1488         p.uapsd = false;
1489
1490         sdata->tx_conf[params->ac] = p;
1491         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1492                 wiphy_debug(local->hw.wiphy,
1493                             "failed to set TX queue parameters for AC %d\n",
1494                             params->ac);
1495                 return -EINVAL;
1496         }
1497
1498         return 0;
1499 }
1500
1501 static int ieee80211_set_channel(struct wiphy *wiphy,
1502                                  struct net_device *netdev,
1503                                  struct ieee80211_channel *chan,
1504                                  enum nl80211_channel_type channel_type)
1505 {
1506         struct ieee80211_local *local = wiphy_priv(wiphy);
1507         struct ieee80211_sub_if_data *sdata = NULL;
1508         struct ieee80211_channel *old_oper;
1509         enum nl80211_channel_type old_oper_type;
1510         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1511
1512         if (netdev)
1513                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1514
1515         switch (ieee80211_get_channel_mode(local, NULL)) {
1516         case CHAN_MODE_HOPPING:
1517                 return -EBUSY;
1518         case CHAN_MODE_FIXED:
1519                 if (local->oper_channel != chan)
1520                         return -EBUSY;
1521                 if (!sdata && local->_oper_channel_type == channel_type)
1522                         return 0;
1523                 break;
1524         case CHAN_MODE_UNDEFINED:
1525                 break;
1526         }
1527
1528         if (sdata)
1529                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1530         old_oper_type = local->_oper_channel_type;
1531
1532         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1533                 return -EBUSY;
1534
1535         old_oper = local->oper_channel;
1536         local->oper_channel = chan;
1537
1538         /* Update driver if changes were actually made. */
1539         if ((old_oper != local->oper_channel) ||
1540             (old_oper_type != local->_oper_channel_type))
1541                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1542
1543         if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR &&
1544             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1545                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1546
1547         return 0;
1548 }
1549
1550 #ifdef CONFIG_PM
1551 static int ieee80211_suspend(struct wiphy *wiphy,
1552                              struct cfg80211_wowlan *wowlan)
1553 {
1554         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1555 }
1556
1557 static int ieee80211_resume(struct wiphy *wiphy)
1558 {
1559         return __ieee80211_resume(wiphy_priv(wiphy));
1560 }
1561 #else
1562 #define ieee80211_suspend NULL
1563 #define ieee80211_resume NULL
1564 #endif
1565
1566 static int ieee80211_scan(struct wiphy *wiphy,
1567                           struct net_device *dev,
1568                           struct cfg80211_scan_request *req)
1569 {
1570         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1571
1572         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1573         case NL80211_IFTYPE_STATION:
1574         case NL80211_IFTYPE_ADHOC:
1575         case NL80211_IFTYPE_MESH_POINT:
1576         case NL80211_IFTYPE_P2P_CLIENT:
1577                 break;
1578         case NL80211_IFTYPE_P2P_GO:
1579                 if (sdata->local->ops->hw_scan)
1580                         break;
1581                 /*
1582                  * FIXME: implement NoA while scanning in software,
1583                  * for now fall through to allow scanning only when
1584                  * beaconing hasn't been configured yet
1585                  */
1586         case NL80211_IFTYPE_AP:
1587                 if (sdata->u.ap.beacon)
1588                         return -EOPNOTSUPP;
1589                 break;
1590         default:
1591                 return -EOPNOTSUPP;
1592         }
1593
1594         return ieee80211_request_scan(sdata, req);
1595 }
1596
1597 static int
1598 ieee80211_sched_scan_start(struct wiphy *wiphy,
1599                            struct net_device *dev,
1600                            struct cfg80211_sched_scan_request *req)
1601 {
1602         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1603
1604         if (!sdata->local->ops->sched_scan_start)
1605                 return -EOPNOTSUPP;
1606
1607         return ieee80211_request_sched_scan_start(sdata, req);
1608 }
1609
1610 static int
1611 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1612 {
1613         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1614
1615         if (!sdata->local->ops->sched_scan_stop)
1616                 return -EOPNOTSUPP;
1617
1618         return ieee80211_request_sched_scan_stop(sdata);
1619 }
1620
1621 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1622                           struct cfg80211_auth_request *req)
1623 {
1624         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1625 }
1626
1627 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1628                            struct cfg80211_assoc_request *req)
1629 {
1630         struct ieee80211_local *local = wiphy_priv(wiphy);
1631         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1632
1633         switch (ieee80211_get_channel_mode(local, sdata)) {
1634         case CHAN_MODE_HOPPING:
1635                 return -EBUSY;
1636         case CHAN_MODE_FIXED:
1637                 if (local->oper_channel == req->bss->channel)
1638                         break;
1639                 return -EBUSY;
1640         case CHAN_MODE_UNDEFINED:
1641                 break;
1642         }
1643
1644         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1645 }
1646
1647 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1648                             struct cfg80211_deauth_request *req)
1649 {
1650         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1651 }
1652
1653 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1654                               struct cfg80211_disassoc_request *req)
1655 {
1656         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1657 }
1658
1659 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1660                                struct cfg80211_ibss_params *params)
1661 {
1662         struct ieee80211_local *local = wiphy_priv(wiphy);
1663         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1664
1665         switch (ieee80211_get_channel_mode(local, sdata)) {
1666         case CHAN_MODE_HOPPING:
1667                 return -EBUSY;
1668         case CHAN_MODE_FIXED:
1669                 if (!params->channel_fixed)
1670                         return -EBUSY;
1671                 if (local->oper_channel == params->channel)
1672                         break;
1673                 return -EBUSY;
1674         case CHAN_MODE_UNDEFINED:
1675                 break;
1676         }
1677
1678         return ieee80211_ibss_join(sdata, params);
1679 }
1680
1681 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1682 {
1683         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1684
1685         return ieee80211_ibss_leave(sdata);
1686 }
1687
1688 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1689 {
1690         struct ieee80211_local *local = wiphy_priv(wiphy);
1691         int err;
1692
1693         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1694                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1695
1696                 if (err)
1697                         return err;
1698         }
1699
1700         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1701                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1702
1703                 if (err)
1704                         return err;
1705         }
1706
1707         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1708                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1709
1710                 if (err)
1711                         return err;
1712         }
1713
1714         if (changed & WIPHY_PARAM_RETRY_SHORT)
1715                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1716         if (changed & WIPHY_PARAM_RETRY_LONG)
1717                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1718         if (changed &
1719             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1720                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1721
1722         return 0;
1723 }
1724
1725 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1726                                   enum nl80211_tx_power_setting type, int mbm)
1727 {
1728         struct ieee80211_local *local = wiphy_priv(wiphy);
1729         struct ieee80211_channel *chan = local->hw.conf.channel;
1730         u32 changes = 0;
1731
1732         switch (type) {
1733         case NL80211_TX_POWER_AUTOMATIC:
1734                 local->user_power_level = -1;
1735                 break;
1736         case NL80211_TX_POWER_LIMITED:
1737                 if (mbm < 0 || (mbm % 100))
1738                         return -EOPNOTSUPP;
1739                 local->user_power_level = MBM_TO_DBM(mbm);
1740                 break;
1741         case NL80211_TX_POWER_FIXED:
1742                 if (mbm < 0 || (mbm % 100))
1743                         return -EOPNOTSUPP;
1744                 /* TODO: move to cfg80211 when it knows the channel */
1745                 if (MBM_TO_DBM(mbm) > chan->max_power)
1746                         return -EINVAL;
1747                 local->user_power_level = MBM_TO_DBM(mbm);
1748                 break;
1749         }
1750
1751         ieee80211_hw_config(local, changes);
1752
1753         return 0;
1754 }
1755
1756 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1757 {
1758         struct ieee80211_local *local = wiphy_priv(wiphy);
1759
1760         *dbm = local->hw.conf.power_level;
1761
1762         return 0;
1763 }
1764
1765 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1766                                   const u8 *addr)
1767 {
1768         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1769
1770         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1771
1772         return 0;
1773 }
1774
1775 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1776 {
1777         struct ieee80211_local *local = wiphy_priv(wiphy);
1778
1779         drv_rfkill_poll(local);
1780 }
1781
1782 #ifdef CONFIG_NL80211_TESTMODE
1783 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1784 {
1785         struct ieee80211_local *local = wiphy_priv(wiphy);
1786
1787         if (!local->ops->testmode_cmd)
1788                 return -EOPNOTSUPP;
1789
1790         return local->ops->testmode_cmd(&local->hw, data, len);
1791 }
1792
1793 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1794                                    struct sk_buff *skb,
1795                                    struct netlink_callback *cb,
1796                                    void *data, int len)
1797 {
1798         struct ieee80211_local *local = wiphy_priv(wiphy);
1799
1800         if (!local->ops->testmode_dump)
1801                 return -EOPNOTSUPP;
1802
1803         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1804 }
1805 #endif
1806
1807 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1808                              enum ieee80211_smps_mode smps_mode)
1809 {
1810         const u8 *ap;
1811         enum ieee80211_smps_mode old_req;
1812         int err;
1813
1814         lockdep_assert_held(&sdata->u.mgd.mtx);
1815
1816         old_req = sdata->u.mgd.req_smps;
1817         sdata->u.mgd.req_smps = smps_mode;
1818
1819         if (old_req == smps_mode &&
1820             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1821                 return 0;
1822
1823         /*
1824          * If not associated, or current association is not an HT
1825          * association, there's no need to send an action frame.
1826          */
1827         if (!sdata->u.mgd.associated ||
1828             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1829                 mutex_lock(&sdata->local->iflist_mtx);
1830                 ieee80211_recalc_smps(sdata->local);
1831                 mutex_unlock(&sdata->local->iflist_mtx);
1832                 return 0;
1833         }
1834
1835         ap = sdata->u.mgd.associated->bssid;
1836
1837         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1838                 if (sdata->u.mgd.powersave)
1839                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1840                 else
1841                         smps_mode = IEEE80211_SMPS_OFF;
1842         }
1843
1844         /* send SM PS frame to AP */
1845         err = ieee80211_send_smps_action(sdata, smps_mode,
1846                                          ap, ap);
1847         if (err)
1848                 sdata->u.mgd.req_smps = old_req;
1849
1850         return err;
1851 }
1852
1853 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1854                                     bool enabled, int timeout)
1855 {
1856         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1857         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1858
1859         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1860                 return -EOPNOTSUPP;
1861
1862         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1863                 return -EOPNOTSUPP;
1864
1865         if (enabled == sdata->u.mgd.powersave &&
1866             timeout == local->dynamic_ps_forced_timeout)
1867                 return 0;
1868
1869         sdata->u.mgd.powersave = enabled;
1870         local->dynamic_ps_forced_timeout = timeout;
1871
1872         /* no change, but if automatic follow powersave */
1873         mutex_lock(&sdata->u.mgd.mtx);
1874         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1875         mutex_unlock(&sdata->u.mgd.mtx);
1876
1877         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1878                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1879
1880         ieee80211_recalc_ps(local, -1);
1881
1882         return 0;
1883 }
1884
1885 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1886                                          struct net_device *dev,
1887                                          s32 rssi_thold, u32 rssi_hyst)
1888 {
1889         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1890         struct ieee80211_vif *vif = &sdata->vif;
1891         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1892
1893         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1894             rssi_hyst == bss_conf->cqm_rssi_hyst)
1895                 return 0;
1896
1897         bss_conf->cqm_rssi_thold = rssi_thold;
1898         bss_conf->cqm_rssi_hyst = rssi_hyst;
1899
1900         /* tell the driver upon association, unless already associated */
1901         if (sdata->u.mgd.associated &&
1902             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
1903                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1904
1905         return 0;
1906 }
1907
1908 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1909                                       struct net_device *dev,
1910                                       const u8 *addr,
1911                                       const struct cfg80211_bitrate_mask *mask)
1912 {
1913         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1914         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1915         int i, ret;
1916
1917         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1918                 ret = drv_set_bitrate_mask(local, sdata, mask);
1919                 if (ret)
1920                         return ret;
1921         }
1922
1923         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
1924                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1925                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
1926                        sizeof(mask->control[i].mcs));
1927         }
1928
1929         return 0;
1930 }
1931
1932 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1933                                           struct net_device *dev,
1934                                           struct ieee80211_channel *chan,
1935                                           enum nl80211_channel_type chantype,
1936                                           unsigned int duration, u64 *cookie)
1937 {
1938         int ret;
1939         u32 random_cookie;
1940
1941         lockdep_assert_held(&local->mtx);
1942
1943         if (local->hw_roc_cookie)
1944                 return -EBUSY;
1945         /* must be nonzero */
1946         random_cookie = random32() | 1;
1947
1948         *cookie = random_cookie;
1949         local->hw_roc_dev = dev;
1950         local->hw_roc_cookie = random_cookie;
1951         local->hw_roc_channel = chan;
1952         local->hw_roc_channel_type = chantype;
1953         local->hw_roc_duration = duration;
1954         ret = drv_remain_on_channel(local, chan, chantype, duration);
1955         if (ret) {
1956                 local->hw_roc_channel = NULL;
1957                 local->hw_roc_cookie = 0;
1958         }
1959
1960         return ret;
1961 }
1962
1963 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1964                                        struct net_device *dev,
1965                                        struct ieee80211_channel *chan,
1966                                        enum nl80211_channel_type channel_type,
1967                                        unsigned int duration,
1968                                        u64 *cookie)
1969 {
1970         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1971         struct ieee80211_local *local = sdata->local;
1972
1973         if (local->ops->remain_on_channel) {
1974                 int ret;
1975
1976                 mutex_lock(&local->mtx);
1977                 ret = ieee80211_remain_on_channel_hw(local, dev,
1978                                                      chan, channel_type,
1979                                                      duration, cookie);
1980                 local->hw_roc_for_tx = false;
1981                 mutex_unlock(&local->mtx);
1982
1983                 return ret;
1984         }
1985
1986         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1987                                               duration, cookie);
1988 }
1989
1990 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1991                                                  u64 cookie)
1992 {
1993         int ret;
1994
1995         lockdep_assert_held(&local->mtx);
1996
1997         if (local->hw_roc_cookie != cookie)
1998                 return -ENOENT;
1999
2000         ret = drv_cancel_remain_on_channel(local);
2001         if (ret)
2002                 return ret;
2003
2004         local->hw_roc_cookie = 0;
2005         local->hw_roc_channel = NULL;
2006
2007         ieee80211_recalc_idle(local);
2008
2009         return 0;
2010 }
2011
2012 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
2013                                               struct net_device *dev,
2014                                               u64 cookie)
2015 {
2016         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2017         struct ieee80211_local *local = sdata->local;
2018
2019         if (local->ops->cancel_remain_on_channel) {
2020                 int ret;
2021
2022                 mutex_lock(&local->mtx);
2023                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2024                 mutex_unlock(&local->mtx);
2025
2026                 return ret;
2027         }
2028
2029         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
2030 }
2031
2032 static enum work_done_result
2033 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
2034 {
2035         /*
2036          * Use the data embedded in the work struct for reporting
2037          * here so if the driver mangled the SKB before dropping
2038          * it (which is the only way we really should get here)
2039          * then we don't report mangled data.
2040          *
2041          * If there was no wait time, then by the time we get here
2042          * the driver will likely not have reported the status yet,
2043          * so in that case userspace will have to deal with it.
2044          */
2045
2046         if (wk->offchan_tx.wait && !wk->offchan_tx.status)
2047                 cfg80211_mgmt_tx_status(wk->sdata->dev,
2048                                         (unsigned long) wk->offchan_tx.frame,
2049                                         wk->data, wk->data_len, false, GFP_KERNEL);
2050
2051         return WORK_DONE_DESTROY;
2052 }
2053
2054 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
2055                              struct ieee80211_channel *chan, bool offchan,
2056                              enum nl80211_channel_type channel_type,
2057                              bool channel_type_valid, unsigned int wait,
2058                              const u8 *buf, size_t len, bool no_cck,
2059                              bool dont_wait_for_ack, u64 *cookie)
2060 {
2061         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2062         struct ieee80211_local *local = sdata->local;
2063         struct sk_buff *skb;
2064         struct sta_info *sta;
2065         struct ieee80211_work *wk;
2066         const struct ieee80211_mgmt *mgmt = (void *)buf;
2067         u32 flags;
2068         bool is_offchan = false;
2069
2070         if (dont_wait_for_ack)
2071                 flags = IEEE80211_TX_CTL_NO_ACK;
2072         else
2073                 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
2074                         IEEE80211_TX_CTL_REQ_TX_STATUS;
2075
2076         /* Check that we are on the requested channel for transmission */
2077         if (chan != local->tmp_channel &&
2078             chan != local->oper_channel)
2079                 is_offchan = true;
2080         if (channel_type_valid &&
2081             (channel_type != local->tmp_channel_type &&
2082              channel_type != local->_oper_channel_type))
2083                 is_offchan = true;
2084
2085         if (chan == local->hw_roc_channel) {
2086                 /* TODO: check channel type? */
2087                 is_offchan = false;
2088                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2089         }
2090
2091         if (no_cck)
2092                 flags |= IEEE80211_TX_CTL_NO_CCK_RATE;
2093
2094         if (is_offchan && !offchan)
2095                 return -EBUSY;
2096
2097         switch (sdata->vif.type) {
2098         case NL80211_IFTYPE_ADHOC:
2099         case NL80211_IFTYPE_AP:
2100         case NL80211_IFTYPE_AP_VLAN:
2101         case NL80211_IFTYPE_P2P_GO:
2102         case NL80211_IFTYPE_MESH_POINT:
2103                 if (!ieee80211_is_action(mgmt->frame_control) ||
2104                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
2105                         break;
2106                 rcu_read_lock();
2107                 sta = sta_info_get(sdata, mgmt->da);
2108                 rcu_read_unlock();
2109                 if (!sta)
2110                         return -ENOLINK;
2111                 break;
2112         case NL80211_IFTYPE_STATION:
2113         case NL80211_IFTYPE_P2P_CLIENT:
2114                 break;
2115         default:
2116                 return -EOPNOTSUPP;
2117         }
2118
2119         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
2120         if (!skb)
2121                 return -ENOMEM;
2122         skb_reserve(skb, local->hw.extra_tx_headroom);
2123
2124         memcpy(skb_put(skb, len), buf, len);
2125
2126         IEEE80211_SKB_CB(skb)->flags = flags;
2127
2128         if (flags & IEEE80211_TX_CTL_TX_OFFCHAN)
2129                 IEEE80211_SKB_CB(skb)->hw_queue =
2130                         local->hw.offchannel_tx_hw_queue;
2131
2132         skb->dev = sdata->dev;
2133
2134         *cookie = (unsigned long) skb;
2135
2136         if (is_offchan && local->ops->remain_on_channel) {
2137                 unsigned int duration;
2138                 int ret;
2139
2140                 mutex_lock(&local->mtx);
2141                 /*
2142                  * If the duration is zero, then the driver
2143                  * wouldn't actually do anything. Set it to
2144                  * 100 for now.
2145                  *
2146                  * TODO: cancel the off-channel operation
2147                  *       when we get the SKB's TX status and
2148                  *       the wait time was zero before.
2149                  */
2150                 duration = 100;
2151                 if (wait)
2152                         duration = wait;
2153                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
2154                                                      channel_type,
2155                                                      duration, cookie);
2156                 if (ret) {
2157                         kfree_skb(skb);
2158                         mutex_unlock(&local->mtx);
2159                         return ret;
2160                 }
2161
2162                 local->hw_roc_for_tx = true;
2163                 local->hw_roc_duration = wait;
2164
2165                 /*
2166                  * queue up frame for transmission after
2167                  * ieee80211_ready_on_channel call
2168                  */
2169
2170                 /* modify cookie to prevent API mismatches */
2171                 *cookie ^= 2;
2172                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
2173                 IEEE80211_SKB_CB(skb)->hw_queue =
2174                         local->hw.offchannel_tx_hw_queue;
2175                 local->hw_roc_skb = skb;
2176                 local->hw_roc_skb_for_status = skb;
2177                 mutex_unlock(&local->mtx);
2178
2179                 return 0;
2180         }
2181
2182         /*
2183          * Can transmit right away if the channel was the
2184          * right one and there's no wait involved... If a
2185          * wait is involved, we might otherwise not be on
2186          * the right channel for long enough!
2187          */
2188         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
2189                 ieee80211_tx_skb(sdata, skb);
2190                 return 0;
2191         }
2192
2193         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
2194         if (!wk) {
2195                 kfree_skb(skb);
2196                 return -ENOMEM;
2197         }
2198
2199         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
2200         wk->chan = chan;
2201         wk->chan_type = channel_type;
2202         wk->sdata = sdata;
2203         wk->done = ieee80211_offchan_tx_done;
2204         wk->offchan_tx.frame = skb;
2205         wk->offchan_tx.wait = wait;
2206         wk->data_len = len;
2207         memcpy(wk->data, buf, len);
2208
2209         ieee80211_add_work(wk);
2210         return 0;
2211 }
2212
2213 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
2214                                          struct net_device *dev,
2215                                          u64 cookie)
2216 {
2217         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2218         struct ieee80211_local *local = sdata->local;
2219         struct ieee80211_work *wk;
2220         int ret = -ENOENT;
2221
2222         mutex_lock(&local->mtx);
2223
2224         if (local->ops->cancel_remain_on_channel) {
2225                 cookie ^= 2;
2226                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2227
2228                 if (ret == 0) {
2229                         kfree_skb(local->hw_roc_skb);
2230                         local->hw_roc_skb = NULL;
2231                         local->hw_roc_skb_for_status = NULL;
2232                 }
2233
2234                 mutex_unlock(&local->mtx);
2235
2236                 return ret;
2237         }
2238
2239         list_for_each_entry(wk, &local->work_list, list) {
2240                 if (wk->sdata != sdata)
2241                         continue;
2242
2243                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2244                         continue;
2245
2246                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2247                         continue;
2248
2249                 wk->timeout = jiffies;
2250
2251                 ieee80211_queue_work(&local->hw, &local->work_work);
2252                 ret = 0;
2253                 break;
2254         }
2255         mutex_unlock(&local->mtx);
2256
2257         return ret;
2258 }
2259
2260 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2261                                           struct net_device *dev,
2262                                           u16 frame_type, bool reg)
2263 {
2264         struct ieee80211_local *local = wiphy_priv(wiphy);
2265
2266         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2267                 return;
2268
2269         if (reg)
2270                 local->probe_req_reg++;
2271         else
2272                 local->probe_req_reg--;
2273
2274         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2275 }
2276
2277 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2278 {
2279         struct ieee80211_local *local = wiphy_priv(wiphy);
2280
2281         if (local->started)
2282                 return -EOPNOTSUPP;
2283
2284         return drv_set_antenna(local, tx_ant, rx_ant);
2285 }
2286
2287 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2288 {
2289         struct ieee80211_local *local = wiphy_priv(wiphy);
2290
2291         return drv_get_antenna(local, tx_ant, rx_ant);
2292 }
2293
2294 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2295 {
2296         struct ieee80211_local *local = wiphy_priv(wiphy);
2297
2298         return drv_set_ringparam(local, tx, rx);
2299 }
2300
2301 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2302                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2303 {
2304         struct ieee80211_local *local = wiphy_priv(wiphy);
2305
2306         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2307 }
2308
2309 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
2310                                     struct net_device *dev,
2311                                     struct cfg80211_gtk_rekey_data *data)
2312 {
2313         struct ieee80211_local *local = wiphy_priv(wiphy);
2314         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2315
2316         if (!local->ops->set_rekey_data)
2317                 return -EOPNOTSUPP;
2318
2319         drv_set_rekey_data(local, sdata, data);
2320
2321         return 0;
2322 }
2323
2324 static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb)
2325 {
2326         u8 *pos = (void *)skb_put(skb, 7);
2327
2328         *pos++ = WLAN_EID_EXT_CAPABILITY;
2329         *pos++ = 5; /* len */
2330         *pos++ = 0x0;
2331         *pos++ = 0x0;
2332         *pos++ = 0x0;
2333         *pos++ = 0x0;
2334         *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
2335 }
2336
2337 static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata)
2338 {
2339         struct ieee80211_local *local = sdata->local;
2340         u16 capab;
2341
2342         capab = 0;
2343         if (local->oper_channel->band != IEEE80211_BAND_2GHZ)
2344                 return capab;
2345
2346         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE))
2347                 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
2348         if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE))
2349                 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
2350
2351         return capab;
2352 }
2353
2354 static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr,
2355                                        u8 *peer, u8 *bssid)
2356 {
2357         struct ieee80211_tdls_lnkie *lnkid;
2358
2359         lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
2360
2361         lnkid->ie_type = WLAN_EID_LINK_ID;
2362         lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2;
2363
2364         memcpy(lnkid->bssid, bssid, ETH_ALEN);
2365         memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
2366         memcpy(lnkid->resp_sta, peer, ETH_ALEN);
2367 }
2368
2369 static int
2370 ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev,
2371                                u8 *peer, u8 action_code, u8 dialog_token,
2372                                u16 status_code, struct sk_buff *skb)
2373 {
2374         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2375         struct ieee80211_tdls_data *tf;
2376
2377         tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
2378
2379         memcpy(tf->da, peer, ETH_ALEN);
2380         memcpy(tf->sa, sdata->vif.addr, ETH_ALEN);
2381         tf->ether_type = cpu_to_be16(ETH_P_TDLS);
2382         tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
2383
2384         switch (action_code) {
2385         case WLAN_TDLS_SETUP_REQUEST:
2386                 tf->category = WLAN_CATEGORY_TDLS;
2387                 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
2388
2389                 skb_put(skb, sizeof(tf->u.setup_req));
2390                 tf->u.setup_req.dialog_token = dialog_token;
2391                 tf->u.setup_req.capability =
2392                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2393
2394                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2395                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2396                 ieee80211_tdls_add_ext_capab(skb);
2397                 break;
2398         case WLAN_TDLS_SETUP_RESPONSE:
2399                 tf->category = WLAN_CATEGORY_TDLS;
2400                 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
2401
2402                 skb_put(skb, sizeof(tf->u.setup_resp));
2403                 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
2404                 tf->u.setup_resp.dialog_token = dialog_token;
2405                 tf->u.setup_resp.capability =
2406                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2407
2408                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2409                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2410                 ieee80211_tdls_add_ext_capab(skb);
2411                 break;
2412         case WLAN_TDLS_SETUP_CONFIRM:
2413                 tf->category = WLAN_CATEGORY_TDLS;
2414                 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
2415
2416                 skb_put(skb, sizeof(tf->u.setup_cfm));
2417                 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
2418                 tf->u.setup_cfm.dialog_token = dialog_token;
2419                 break;
2420         case WLAN_TDLS_TEARDOWN:
2421                 tf->category = WLAN_CATEGORY_TDLS;
2422                 tf->action_code = WLAN_TDLS_TEARDOWN;
2423
2424                 skb_put(skb, sizeof(tf->u.teardown));
2425                 tf->u.teardown.reason_code = cpu_to_le16(status_code);
2426                 break;
2427         case WLAN_TDLS_DISCOVERY_REQUEST:
2428                 tf->category = WLAN_CATEGORY_TDLS;
2429                 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
2430
2431                 skb_put(skb, sizeof(tf->u.discover_req));
2432                 tf->u.discover_req.dialog_token = dialog_token;
2433                 break;
2434         default:
2435                 return -EINVAL;
2436         }
2437
2438         return 0;
2439 }
2440
2441 static int
2442 ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev,
2443                            u8 *peer, u8 action_code, u8 dialog_token,
2444                            u16 status_code, struct sk_buff *skb)
2445 {
2446         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2447         struct ieee80211_mgmt *mgmt;
2448
2449         mgmt = (void *)skb_put(skb, 24);
2450         memset(mgmt, 0, 24);
2451         memcpy(mgmt->da, peer, ETH_ALEN);
2452         memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
2453         memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
2454
2455         mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
2456                                           IEEE80211_STYPE_ACTION);
2457
2458         switch (action_code) {
2459         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2460                 skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp));
2461                 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
2462                 mgmt->u.action.u.tdls_discover_resp.action_code =
2463                         WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
2464                 mgmt->u.action.u.tdls_discover_resp.dialog_token =
2465                         dialog_token;
2466                 mgmt->u.action.u.tdls_discover_resp.capability =
2467                         cpu_to_le16(ieee80211_get_tdls_sta_capab(sdata));
2468
2469                 ieee80211_add_srates_ie(&sdata->vif, skb, false);
2470                 ieee80211_add_ext_srates_ie(&sdata->vif, skb, false);
2471                 ieee80211_tdls_add_ext_capab(skb);
2472                 break;
2473         default:
2474                 return -EINVAL;
2475         }
2476
2477         return 0;
2478 }
2479
2480 static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
2481                                u8 *peer, u8 action_code, u8 dialog_token,
2482                                u16 status_code, const u8 *extra_ies,
2483                                size_t extra_ies_len)
2484 {
2485         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2486         struct ieee80211_local *local = sdata->local;
2487         struct ieee80211_tx_info *info;
2488         struct sk_buff *skb = NULL;
2489         bool send_direct;
2490         int ret;
2491
2492         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2493                 return -ENOTSUPP;
2494
2495         /* make sure we are in managed mode, and associated */
2496         if (sdata->vif.type != NL80211_IFTYPE_STATION ||
2497             !sdata->u.mgd.associated)
2498                 return -EINVAL;
2499
2500 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2501         printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer);
2502 #endif
2503
2504         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
2505                             max(sizeof(struct ieee80211_mgmt),
2506                                 sizeof(struct ieee80211_tdls_data)) +
2507                             50 + /* supported rates */
2508                             7 + /* ext capab */
2509                             extra_ies_len +
2510                             sizeof(struct ieee80211_tdls_lnkie));
2511         if (!skb)
2512                 return -ENOMEM;
2513
2514         info = IEEE80211_SKB_CB(skb);
2515         skb_reserve(skb, local->hw.extra_tx_headroom);
2516
2517         switch (action_code) {
2518         case WLAN_TDLS_SETUP_REQUEST:
2519         case WLAN_TDLS_SETUP_RESPONSE:
2520         case WLAN_TDLS_SETUP_CONFIRM:
2521         case WLAN_TDLS_TEARDOWN:
2522         case WLAN_TDLS_DISCOVERY_REQUEST:
2523                 ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer,
2524                                                      action_code, dialog_token,
2525                                                      status_code, skb);
2526                 send_direct = false;
2527                 break;
2528         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2529                 ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code,
2530                                                  dialog_token, status_code,
2531                                                  skb);
2532                 send_direct = true;
2533                 break;
2534         default:
2535                 ret = -ENOTSUPP;
2536                 break;
2537         }
2538
2539         if (ret < 0)
2540                 goto fail;
2541
2542         if (extra_ies_len)
2543                 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
2544
2545         /* the TDLS link IE is always added last */
2546         switch (action_code) {
2547         case WLAN_TDLS_SETUP_REQUEST:
2548         case WLAN_TDLS_SETUP_CONFIRM:
2549         case WLAN_TDLS_TEARDOWN:
2550         case WLAN_TDLS_DISCOVERY_REQUEST:
2551                 /* we are the initiator */
2552                 ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer,
2553                                            sdata->u.mgd.bssid);
2554                 break;
2555         case WLAN_TDLS_SETUP_RESPONSE:
2556         case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
2557                 /* we are the responder */
2558                 ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr,
2559                                            sdata->u.mgd.bssid);
2560                 break;
2561         default:
2562                 ret = -ENOTSUPP;
2563                 goto fail;
2564         }
2565
2566         if (send_direct) {
2567                 ieee80211_tx_skb(sdata, skb);
2568                 return 0;
2569         }
2570
2571         /*
2572          * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise
2573          * we should default to AC_VI.
2574          */
2575         switch (action_code) {
2576         case WLAN_TDLS_SETUP_REQUEST:
2577         case WLAN_TDLS_SETUP_RESPONSE:
2578                 skb_set_queue_mapping(skb, IEEE80211_AC_BK);
2579                 skb->priority = 2;
2580                 break;
2581         default:
2582                 skb_set_queue_mapping(skb, IEEE80211_AC_VI);
2583                 skb->priority = 5;
2584                 break;
2585         }
2586
2587         /* disable bottom halves when entering the Tx path */
2588         local_bh_disable();
2589         ret = ieee80211_subif_start_xmit(skb, dev);
2590         local_bh_enable();
2591
2592         return ret;
2593
2594 fail:
2595         dev_kfree_skb(skb);
2596         return ret;
2597 }
2598
2599 static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
2600                                u8 *peer, enum nl80211_tdls_operation oper)
2601 {
2602         struct sta_info *sta;
2603         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2604
2605         if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS))
2606                 return -ENOTSUPP;
2607
2608         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2609                 return -EINVAL;
2610
2611 #ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG
2612         printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer);
2613 #endif
2614
2615         switch (oper) {
2616         case NL80211_TDLS_ENABLE_LINK:
2617                 rcu_read_lock();
2618                 sta = sta_info_get(sdata, peer);
2619                 if (!sta) {
2620                         rcu_read_unlock();
2621                         return -ENOLINK;
2622                 }
2623
2624                 set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH);
2625                 rcu_read_unlock();
2626                 break;
2627         case NL80211_TDLS_DISABLE_LINK:
2628                 return sta_info_destroy_addr(sdata, peer);
2629         case NL80211_TDLS_TEARDOWN:
2630         case NL80211_TDLS_SETUP:
2631         case NL80211_TDLS_DISCOVERY_REQ:
2632                 /* We don't support in-driver setup/teardown/discovery */
2633                 return -ENOTSUPP;
2634         default:
2635                 return -ENOTSUPP;
2636         }
2637
2638         return 0;
2639 }
2640
2641 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
2642                                   const u8 *peer, u64 *cookie)
2643 {
2644         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2645         struct ieee80211_local *local = sdata->local;
2646         struct ieee80211_qos_hdr *nullfunc;
2647         struct sk_buff *skb;
2648         int size = sizeof(*nullfunc);
2649         __le16 fc;
2650         bool qos;
2651         struct ieee80211_tx_info *info;
2652         struct sta_info *sta;
2653
2654         rcu_read_lock();
2655         sta = sta_info_get(sdata, peer);
2656         if (sta) {
2657                 qos = test_sta_flag(sta, WLAN_STA_WME);
2658                 rcu_read_unlock();
2659         } else {
2660                 rcu_read_unlock();
2661                 return -ENOLINK;
2662         }
2663
2664         if (qos) {
2665                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2666                                  IEEE80211_STYPE_QOS_NULLFUNC |
2667                                  IEEE80211_FCTL_FROMDS);
2668         } else {
2669                 size -= 2;
2670                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
2671                                  IEEE80211_STYPE_NULLFUNC |
2672                                  IEEE80211_FCTL_FROMDS);
2673         }
2674
2675         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
2676         if (!skb)
2677                 return -ENOMEM;
2678
2679         skb->dev = dev;
2680
2681         skb_reserve(skb, local->hw.extra_tx_headroom);
2682
2683         nullfunc = (void *) skb_put(skb, size);
2684         nullfunc->frame_control = fc;
2685         nullfunc->duration_id = 0;
2686         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
2687         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
2688         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
2689         nullfunc->seq_ctrl = 0;
2690
2691         info = IEEE80211_SKB_CB(skb);
2692
2693         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
2694                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
2695
2696         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
2697         skb->priority = 7;
2698         if (qos)
2699                 nullfunc->qos_ctrl = cpu_to_le16(7);
2700
2701         local_bh_disable();
2702         ieee80211_xmit(sdata, skb);
2703         local_bh_enable();
2704
2705         *cookie = (unsigned long) skb;
2706         return 0;
2707 }
2708
2709 static struct ieee80211_channel *
2710 ieee80211_wiphy_get_channel(struct wiphy *wiphy,
2711                             enum nl80211_channel_type *type)
2712 {
2713         struct ieee80211_local *local = wiphy_priv(wiphy);
2714
2715         *type = local->_oper_channel_type;
2716         return local->oper_channel;
2717 }
2718
2719 #ifdef CONFIG_PM
2720 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
2721 {
2722         drv_set_wakeup(wiphy_priv(wiphy), enabled);
2723 }
2724 #endif
2725
2726 struct cfg80211_ops mac80211_config_ops = {
2727         .add_virtual_intf = ieee80211_add_iface,
2728         .del_virtual_intf = ieee80211_del_iface,
2729         .change_virtual_intf = ieee80211_change_iface,
2730         .add_key = ieee80211_add_key,
2731         .del_key = ieee80211_del_key,
2732         .get_key = ieee80211_get_key,
2733         .set_default_key = ieee80211_config_default_key,
2734         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2735         .start_ap = ieee80211_start_ap,
2736         .change_beacon = ieee80211_change_beacon,
2737         .stop_ap = ieee80211_stop_ap,
2738         .add_station = ieee80211_add_station,
2739         .del_station = ieee80211_del_station,
2740         .change_station = ieee80211_change_station,
2741         .get_station = ieee80211_get_station,
2742         .dump_station = ieee80211_dump_station,
2743         .dump_survey = ieee80211_dump_survey,
2744 #ifdef CONFIG_MAC80211_MESH
2745         .add_mpath = ieee80211_add_mpath,
2746         .del_mpath = ieee80211_del_mpath,
2747         .change_mpath = ieee80211_change_mpath,
2748         .get_mpath = ieee80211_get_mpath,
2749         .dump_mpath = ieee80211_dump_mpath,
2750         .update_mesh_config = ieee80211_update_mesh_config,
2751         .get_mesh_config = ieee80211_get_mesh_config,
2752         .join_mesh = ieee80211_join_mesh,
2753         .leave_mesh = ieee80211_leave_mesh,
2754 #endif
2755         .change_bss = ieee80211_change_bss,
2756         .set_txq_params = ieee80211_set_txq_params,
2757         .set_channel = ieee80211_set_channel,
2758         .suspend = ieee80211_suspend,
2759         .resume = ieee80211_resume,
2760         .scan = ieee80211_scan,
2761         .sched_scan_start = ieee80211_sched_scan_start,
2762         .sched_scan_stop = ieee80211_sched_scan_stop,
2763         .auth = ieee80211_auth,
2764         .assoc = ieee80211_assoc,
2765         .deauth = ieee80211_deauth,
2766         .disassoc = ieee80211_disassoc,
2767         .join_ibss = ieee80211_join_ibss,
2768         .leave_ibss = ieee80211_leave_ibss,
2769         .set_wiphy_params = ieee80211_set_wiphy_params,
2770         .set_tx_power = ieee80211_set_tx_power,
2771         .get_tx_power = ieee80211_get_tx_power,
2772         .set_wds_peer = ieee80211_set_wds_peer,
2773         .rfkill_poll = ieee80211_rfkill_poll,
2774         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2775         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2776         .set_power_mgmt = ieee80211_set_power_mgmt,
2777         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2778         .remain_on_channel = ieee80211_remain_on_channel,
2779         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2780         .mgmt_tx = ieee80211_mgmt_tx,
2781         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2782         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2783         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2784         .set_antenna = ieee80211_set_antenna,
2785         .get_antenna = ieee80211_get_antenna,
2786         .set_ringparam = ieee80211_set_ringparam,
2787         .get_ringparam = ieee80211_get_ringparam,
2788         .set_rekey_data = ieee80211_set_rekey_data,
2789         .tdls_oper = ieee80211_tdls_oper,
2790         .tdls_mgmt = ieee80211_tdls_mgmt,
2791         .probe_client = ieee80211_probe_client,
2792         .get_channel = ieee80211_wiphy_get_channel,
2793         .set_noack_map = ieee80211_set_noack_map,
2794 #ifdef CONFIG_PM
2795         .set_wakeup = ieee80211_set_wakeup,
2796 #endif
2797 };