net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <[email protected]>
   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 <net/cfg80211.h>
  16 #include "ieee80211_i.h"
  17 #include "driver-ops.h"
  18 #include "cfg.h"
  19 #include "rate.h"
  20 #include "mesh.h"
  21
  22 static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name,
  23                                               enum nl80211_iftype type,
  24                                               u32 *flags,
  25                                               struct vif_params *params)
  26 {
  27         struct ieee80211_local *local = wiphy_priv(wiphy);
  28         struct net_device *dev;
  29         struct ieee80211_sub_if_data *sdata;
  30         int err;
  31
  32         err = ieee80211_if_add(local, name, &dev, type, params);
  33         if (err)
  34                 return ERR_PTR(err);
  35
  36         if (type == NL80211_IFTYPE_MONITOR && flags) {
  37                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  38                 sdata->u.mntr_flags = *flags;
  39         }
  40
  41         return dev;
  42 }
  43
  44 static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev)
  45 {
  46         ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev));
  47
  48         return 0;
  49 }
  50
  51 static int ieee80211_change_iface(struct wiphy *wiphy,
  52                                   struct net_device *dev,
  53                                   enum nl80211_iftype type, u32 *flags,
  54                                   struct vif_params *params)
  55 {
  56         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  57         int ret;
  58
  59         ret = ieee80211_if_change_type(sdata, type);
  60         if (ret)
  61                 return ret;
  62
  63         if (type == NL80211_IFTYPE_AP_VLAN &&
  64             params && params->use_4addr == 0)
  65                 rcu_assign_pointer(sdata->u.vlan.sta, NULL);
  66         else if (type == NL80211_IFTYPE_STATION &&
  67                  params && params->use_4addr >= 0)
  68                 sdata->u.mgd.use_4addr = params->use_4addr;
  69
  70         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  71                 struct ieee80211_local *local = sdata->local;
  72
  73                 if (ieee80211_sdata_running(sdata)) {
  74                         /*
  75                          * Prohibit MONITOR_FLAG_COOK_FRAMES to be
  76                          * changed while the interface is up.
  77                          * Else we would need to add a lot of cruft
  78                          * to update everything:
  79                          *      cooked_mntrs, monitor and all fif_* counters
  80                          *      reconfigure hardware
  81                          */
  82                         if ((*flags & MONITOR_FLAG_COOK_FRAMES) !=
  83                             (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES))
  84                                 return -EBUSY;
  85
  86                         ieee80211_adjust_monitor_flags(sdata, -1);
  87                         sdata->u.mntr_flags = *flags;
  88                         ieee80211_adjust_monitor_flags(sdata, 1);
  89
  90                         ieee80211_configure_filter(local);
  91                 } else {
  92                         /*
  93                          * Because the interface is down, ieee80211_do_stop
  94                          * and ieee80211_do_open take care of "everything"
  95                          * mentioned in the comment above.
  96                          */
  97                         sdata->u.mntr_flags = *flags;
  98                 }
  99         }
 100
 101         return 0;
 102 }
 103
 104 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 105                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 106                              struct key_params *params)
 107 {
 108         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 109         struct sta_info *sta = NULL;
 110         struct ieee80211_key *key;
 111         int err;
 112
 113         if (!ieee80211_sdata_running(sdata))
 114                 return -ENETDOWN;
 115
 116         /* reject WEP and TKIP keys if WEP failed to initialize */
 117         switch (params->cipher) {
 118         case WLAN_CIPHER_SUITE_WEP40:
 119         case WLAN_CIPHER_SUITE_TKIP:
 120         case WLAN_CIPHER_SUITE_WEP104:
 121                 if (IS_ERR(sdata->local->wep_tx_tfm))
 122                         return -EINVAL;
 123                 break;
 124         default:
 125                 break;
 126         }
 127
 128         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 129                                   params->key, params->seq_len, params->seq);
 130         if (IS_ERR(key))
 131                 return PTR_ERR(key);
 132
 133         if (pairwise)
 134                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 135
 136         mutex_lock(&sdata->local->sta_mtx);
 137
 138         if (mac_addr) {
 139                 if (ieee80211_vif_is_mesh(&sdata->vif))
 140                         sta = sta_info_get(sdata, mac_addr);
 141                 else
 142                         sta = sta_info_get_bss(sdata, mac_addr);
 143                 if (!sta) {
 144                         ieee80211_key_free(sdata->local, key);
 145                         err = -ENOENT;
 146                         goto out_unlock;
 147                 }
 148         }
 149
 150         err = ieee80211_key_link(key, sdata, sta);
 151         if (err)
 152                 ieee80211_key_free(sdata->local, key);
 153
 154  out_unlock:
 155         mutex_unlock(&sdata->local->sta_mtx);
 156
 157         return err;
 158 }
 159
 160 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 161                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 162 {
 163         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 164         struct ieee80211_local *local = sdata->local;
 165         struct sta_info *sta;
 166         struct ieee80211_key *key = NULL;
 167         int ret;
 168
 169         mutex_lock(&local->sta_mtx);
 170         mutex_lock(&local->key_mtx);
 171
 172         if (mac_addr) {
 173                 ret = -ENOENT;
 174
 175                 sta = sta_info_get_bss(sdata, mac_addr);
 176                 if (!sta)
 177                         goto out_unlock;
 178
 179                 if (pairwise)
 180                         key = key_mtx_dereference(local, sta->ptk);
 181                 else
 182                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 183         } else
 184                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 185
 186         if (!key) {
 187                 ret = -ENOENT;
 188                 goto out_unlock;
 189         }
 190
 191         __ieee80211_key_free(key);
 192
 193         ret = 0;
 194  out_unlock:
 195         mutex_unlock(&local->key_mtx);
 196         mutex_unlock(&local->sta_mtx);
 197
 198         return ret;
 199 }
 200
 201 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 202                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 203                              void *cookie,
 204                              void (*callback)(void *cookie,
 205                                               struct key_params *params))
 206 {
 207         struct ieee80211_sub_if_data *sdata;
 208         struct sta_info *sta = NULL;
 209         u8 seq[6] = {0};
 210         struct key_params params;
 211         struct ieee80211_key *key = NULL;
 212         u32 iv32;
 213         u16 iv16;
 214         int err = -ENOENT;
 215
 216         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 217
 218         rcu_read_lock();
 219
 220         if (mac_addr) {
 221                 sta = sta_info_get_bss(sdata, mac_addr);
 222                 if (!sta)
 223                         goto out;
 224
 225                 if (pairwise)
 226                         key = rcu_dereference(sta->ptk);
 227                 else if (key_idx < NUM_DEFAULT_KEYS)
 228                         key = rcu_dereference(sta->gtk[key_idx]);
 229         } else
 230                 key = rcu_dereference(sdata->keys[key_idx]);
 231
 232         if (!key)
 233                 goto out;
 234
 235         memset(&params, 0, sizeof(params));
 236
 237         params.cipher = key->conf.cipher;
 238
 239         switch (key->conf.cipher) {
 240         case WLAN_CIPHER_SUITE_TKIP:
 241                 iv32 = key->u.tkip.tx.iv32;
 242                 iv16 = key->u.tkip.tx.iv16;
 243
 244                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
 245                         drv_get_tkip_seq(sdata->local,
 246                                          key->conf.hw_key_idx,
 247                                          &iv32, &iv16);
 248
 249                 seq[0] = iv16 & 0xff;
 250                 seq[1] = (iv16 >> 8) & 0xff;
 251                 seq[2] = iv32 & 0xff;
 252                 seq[3] = (iv32 >> 8) & 0xff;
 253                 seq[4] = (iv32 >> 16) & 0xff;
 254                 seq[5] = (iv32 >> 24) & 0xff;
 255                 params.seq = seq;
 256                 params.seq_len = 6;
 257                 break;
 258         case WLAN_CIPHER_SUITE_CCMP:
 259                 seq[0] = key->u.ccmp.tx_pn[5];
 260                 seq[1] = key->u.ccmp.tx_pn[4];
 261                 seq[2] = key->u.ccmp.tx_pn[3];
 262                 seq[3] = key->u.ccmp.tx_pn[2];
 263                 seq[4] = key->u.ccmp.tx_pn[1];
 264                 seq[5] = key->u.ccmp.tx_pn[0];
 265                 params.seq = seq;
 266                 params.seq_len = 6;
 267                 break;
 268         case WLAN_CIPHER_SUITE_AES_CMAC:
 269                 seq[0] = key->u.aes_cmac.tx_pn[5];
 270                 seq[1] = key->u.aes_cmac.tx_pn[4];
 271                 seq[2] = key->u.aes_cmac.tx_pn[3];
 272                 seq[3] = key->u.aes_cmac.tx_pn[2];
 273                 seq[4] = key->u.aes_cmac.tx_pn[1];
 274                 seq[5] = key->u.aes_cmac.tx_pn[0];
 275                 params.seq = seq;
 276                 params.seq_len = 6;
 277                 break;
 278         }
 279
 280         params.key = key->conf.key;
 281         params.key_len = key->conf.keylen;
 282
 283         callback(cookie, &params);
 284         err = 0;
 285
 286  out:
 287         rcu_read_unlock();
 288         return err;
 289 }
 290
 291 static int ieee80211_config_default_key(struct wiphy *wiphy,
 292                                         struct net_device *dev,
 293                                         u8 key_idx, bool uni,
 294                                         bool multi)
 295 {
 296         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 297
 298         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 299
 300         return 0;
 301 }
 302
 303 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 304                                              struct net_device *dev,
 305                                              u8 key_idx)
 306 {
 307         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 308
 309         ieee80211_set_default_mgmt_key(sdata, key_idx);
 310
 311         return 0;
 312 }
 313
 314 static void rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx)
 315 {
 316         if (!(rate->flags & RATE_INFO_FLAGS_MCS)) {
 317                 struct ieee80211_supported_band *sband;
 318                 sband = sta->local->hw.wiphy->bands[
 319                                 sta->local->hw.conf.channel->band];
 320                 rate->legacy = sband->bitrates[idx].bitrate;
 321         } else
 322                 rate->mcs = idx;
 323 }
 324
 325 static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
 326 {
 327         struct ieee80211_sub_if_data *sdata = sta->sdata;
 328         struct timespec uptime;
 329
 330         sinfo->generation = sdata->local->sta_generation;
 331
 332         sinfo->filled = STATION_INFO_INACTIVE_TIME |
 333                         STATION_INFO_RX_BYTES |
 334                         STATION_INFO_TX_BYTES |
 335                         STATION_INFO_RX_PACKETS |
 336                         STATION_INFO_TX_PACKETS |
 337                         STATION_INFO_TX_RETRIES |
 338                         STATION_INFO_TX_FAILED |
 339                         STATION_INFO_TX_BITRATE |
 340                         STATION_INFO_RX_BITRATE |
 341                         STATION_INFO_RX_DROP_MISC |
 342                         STATION_INFO_BSS_PARAM |
 343                         STATION_INFO_CONNECTED_TIME;
 344
 345         do_posix_clock_monotonic_gettime(&uptime);
 346         sinfo->connected_time = uptime.tv_sec - sta->last_connected;
 347
 348         sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
 349         sinfo->rx_bytes = sta->rx_bytes;
 350         sinfo->tx_bytes = sta->tx_bytes;
 351         sinfo->rx_packets = sta->rx_packets;
 352         sinfo->tx_packets = sta->tx_packets;
 353         sinfo->tx_retries = sta->tx_retry_count;
 354         sinfo->tx_failed = sta->tx_retry_failed;
 355         sinfo->rx_dropped_misc = sta->rx_dropped;
 356
 357         if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) ||
 358             (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) {
 359                 sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG;
 360                 sinfo->signal = (s8)sta->last_signal;
 361                 sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal);
 362         }
 363
 364         sinfo->txrate.flags = 0;
 365         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)
 366                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
 367         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 368                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 369         if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI)
 370                 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 371         rate_idx_to_bitrate(&sinfo->txrate, sta, sta->last_tx_rate.idx);
 372
 373         sinfo->rxrate.flags = 0;
 374         if (sta->last_rx_rate_flag & RX_FLAG_HT)
 375                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS;
 376         if (sta->last_rx_rate_flag & RX_FLAG_40MHZ)
 377                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
 378         if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI)
 379                 sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
 380         rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_rate_idx);
 381
 382         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 383 #ifdef CONFIG_MAC80211_MESH
 384                 sinfo->filled |= STATION_INFO_LLID |
 385                                  STATION_INFO_PLID |
 386                                  STATION_INFO_PLINK_STATE;
 387
 388                 sinfo->llid = le16_to_cpu(sta->llid);
 389                 sinfo->plid = le16_to_cpu(sta->plid);
 390                 sinfo->plink_state = sta->plink_state;
 391 #endif
 392         }
 393
 394         sinfo->bss_param.flags = 0;
 395         if (sdata->vif.bss_conf.use_cts_prot)
 396                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
 397         if (sdata->vif.bss_conf.use_short_preamble)
 398                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
 399         if (sdata->vif.bss_conf.use_short_slot)
 400                 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
 401         sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
 402         sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
 403 }
 404
 405
 406 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 407                                  int idx, u8 *mac, struct station_info *sinfo)
 408 {
 409         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 410         struct sta_info *sta;
 411         int ret = -ENOENT;
 412
 413         rcu_read_lock();
 414
 415         sta = sta_info_get_by_idx(sdata, idx);
 416         if (sta) {
 417                 ret = 0;
 418                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 419                 sta_set_sinfo(sta, sinfo);
 420         }
 421
 422         rcu_read_unlock();
 423
 424         return ret;
 425 }
 426
 427 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 428                                  int idx, struct survey_info *survey)
 429 {
 430         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 431
 432         return drv_get_survey(local, idx, survey);
 433 }
 434
 435 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 436                                  u8 *mac, struct station_info *sinfo)
 437 {
 438         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 439         struct sta_info *sta;
 440         int ret = -ENOENT;
 441
 442         rcu_read_lock();
 443
 444         sta = sta_info_get_bss(sdata, mac);
 445         if (sta) {
 446                 ret = 0;
 447                 sta_set_sinfo(sta, sinfo);
 448         }
 449
 450         rcu_read_unlock();
 451
 452         return ret;
 453 }
 454
 455 /*
 456  * This handles both adding a beacon and setting new beacon info
 457  */
 458 static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 459                                    struct beacon_parameters *params)
 460 {
 461         struct beacon_data *new, *old;
 462         int new_head_len, new_tail_len;
 463         int size;
 464         int err = -EINVAL;
 465
 466         old = rtnl_dereference(sdata->u.ap.beacon);
 467
 468         /* head must not be zero-length */
 469         if (params->head && !params->head_len)
 470                 return -EINVAL;
 471
 472         /*
 473          * This is a kludge. beacon interval should really be part
 474          * of the beacon information.
 475          */
 476         if (params->interval &&
 477             (sdata->vif.bss_conf.beacon_int != params->interval)) {
 478                 sdata->vif.bss_conf.beacon_int = params->interval;
 479                 ieee80211_bss_info_change_notify(sdata,
 480                                                  BSS_CHANGED_BEACON_INT);
 481         }
 482
 483         /* Need to have a beacon head if we don't have one yet */
 484         if (!params->head && !old)
 485                 return err;
 486
 487         /* sorry, no way to start beaconing without dtim period */
 488         if (!params->dtim_period && !old)
 489                 return err;
 490
 491         /* new or old head? */
 492         if (params->head)
 493                 new_head_len = params->head_len;
 494         else
 495                 new_head_len = old->head_len;
 496
 497         /* new or old tail? */
 498         if (params->tail || !old)
 499                 /* params->tail_len will be zero for !params->tail */
 500                 new_tail_len = params->tail_len;
 501         else
 502                 new_tail_len = old->tail_len;
 503
 504         size = sizeof(*new) + new_head_len + new_tail_len;
 505
 506         new = kzalloc(size, GFP_KERNEL);
 507         if (!new)
 508                 return -ENOMEM;
 509
 510         /* start filling the new info now */
 511
 512         /* new or old dtim period? */
 513         if (params->dtim_period)
 514                 new->dtim_period = params->dtim_period;
 515         else
 516                 new->dtim_period = old->dtim_period;
 517
 518         /*
 519          * pointers go into the block we allocated,
 520          * memory is | beacon_data | head | tail |
 521          */
 522         new->head = ((u8 *) new) + sizeof(*new);
 523         new->tail = new->head + new_head_len;
 524         new->head_len = new_head_len;
 525         new->tail_len = new_tail_len;
 526
 527         /* copy in head */
 528         if (params->head)
 529                 memcpy(new->head, params->head, new_head_len);
 530         else
 531                 memcpy(new->head, old->head, new_head_len);
 532
 533         /* copy in optional tail */
 534         if (params->tail)
 535                 memcpy(new->tail, params->tail, new_tail_len);
 536         else
 537                 if (old)
 538                         memcpy(new->tail, old->tail, new_tail_len);
 539
 540         sdata->vif.bss_conf.dtim_period = new->dtim_period;
 541
 542         rcu_assign_pointer(sdata->u.ap.beacon, new);
 543
 544         synchronize_rcu();
 545
 546         kfree(old);
 547
 548         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
 549                                                 BSS_CHANGED_BEACON);
 550         return 0;
 551 }
 552
 553 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
 554                                 struct beacon_parameters *params)
 555 {
 556         struct ieee80211_sub_if_data *sdata;
 557         struct beacon_data *old;
 558
 559         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 560
 561         old = rtnl_dereference(sdata->u.ap.beacon);
 562         if (old)
 563                 return -EALREADY;
 564
 565         return ieee80211_config_beacon(sdata, params);
 566 }
 567
 568 static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev,
 569                                 struct beacon_parameters *params)
 570 {
 571         struct ieee80211_sub_if_data *sdata;
 572         struct beacon_data *old;
 573
 574         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 575
 576         old = rtnl_dereference(sdata->u.ap.beacon);
 577         if (!old)
 578                 return -ENOENT;
 579
 580         return ieee80211_config_beacon(sdata, params);
 581 }
 582
 583 static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 584 {
 585         struct ieee80211_sub_if_data *sdata;
 586         struct beacon_data *old;
 587
 588         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 589
 590         old = rtnl_dereference(sdata->u.ap.beacon);
 591         if (!old)
 592                 return -ENOENT;
 593
 594         rcu_assign_pointer(sdata->u.ap.beacon, NULL);
 595         synchronize_rcu();
 596         kfree(old);
 597
 598         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 599         return 0;
 600 }
 601
 602 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 603 struct iapp_layer2_update {
 604         u8 da[ETH_ALEN];        /* broadcast */
 605         u8 sa[ETH_ALEN];        /* STA addr */
 606         __be16 len;             /* 6 */
 607         u8 dsap;                /* 0 */
 608         u8 ssap;                /* 0 */
 609         u8 control;
 610         u8 xid_info[3];
 611 } __packed;
 612
 613 static void ieee80211_send_layer2_update(struct sta_info *sta)
 614 {
 615         struct iapp_layer2_update *msg;
 616         struct sk_buff *skb;
 617
 618         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 619          * bridge devices */
 620
 621         skb = dev_alloc_skb(sizeof(*msg));
 622         if (!skb)
 623                 return;
 624         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 625
 626         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 627          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 628
 629         memset(msg->da, 0xff, ETH_ALEN);
 630         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 631         msg->len = htons(6);
 632         msg->dsap = 0;
 633         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 634         msg->control = 0xaf;    /* XID response lsb.1111F101.
 635                                  * F=0 (no poll command; unsolicited frame) */
 636         msg->xid_info[0] = 0x81;        /* XID format identifier */
 637         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 638         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 639
 640         skb->dev = sta->sdata->dev;
 641         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 642         memset(skb->cb, 0, sizeof(skb->cb));
 643         netif_rx_ni(skb);
 644 }
 645
 646 static void sta_apply_parameters(struct ieee80211_local *local,
 647                                  struct sta_info *sta,
 648                                  struct station_parameters *params)
 649 {
 650         unsigned long flags;
 651         u32 rates;
 652         int i, j;
 653         struct ieee80211_supported_band *sband;
 654         struct ieee80211_sub_if_data *sdata = sta->sdata;
 655         u32 mask, set;
 656
 657         sband = local->hw.wiphy->bands[local->oper_channel->band];
 658
 659         spin_lock_irqsave(&sta->flaglock, flags);
 660         mask = params->sta_flags_mask;
 661         set = params->sta_flags_set;
 662
 663         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 664                 sta->flags &= ~WLAN_STA_AUTHORIZED;
 665                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 666                         sta->flags |= WLAN_STA_AUTHORIZED;
 667         }
 668
 669         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
 670                 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
 671                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
 672                         sta->flags |= WLAN_STA_SHORT_PREAMBLE;
 673         }
 674
 675         if (mask & BIT(NL80211_STA_FLAG_WME)) {
 676                 sta->flags &= ~WLAN_STA_WME;
 677                 sta->sta.wme = false;
 678                 if (set & BIT(NL80211_STA_FLAG_WME)) {
 679                         sta->flags |= WLAN_STA_WME;
 680                         sta->sta.wme = true;
 681                 }
 682         }
 683
 684         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
 685                 sta->flags &= ~WLAN_STA_MFP;
 686                 if (set & BIT(NL80211_STA_FLAG_MFP))
 687                         sta->flags |= WLAN_STA_MFP;
 688         }
 689
 690         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) {
 691                 sta->flags &= ~WLAN_STA_AUTH;
 692                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
 693                         sta->flags |= WLAN_STA_AUTH;
 694         }
 695         spin_unlock_irqrestore(&sta->flaglock, flags);
 696
 697         /*
 698          * cfg80211 validates this (1-2007) and allows setting the AID
 699          * only when creating a new station entry
 700          */
 701         if (params->aid)
 702                 sta->sta.aid = params->aid;
 703
 704         /*
 705          * FIXME: updating the following information is racy when this
 706          *        function is called from ieee80211_change_station().
 707          *        However, all this information should be static so
 708          *        maybe we should just reject attemps to change it.
 709          */
 710
 711         if (params->listen_interval >= 0)
 712                 sta->listen_interval = params->listen_interval;
 713
 714         if (params->supported_rates) {
 715                 rates = 0;
 716
 717                 for (i = 0; i < params->supported_rates_len; i++) {
 718                         int rate = (params->supported_rates[i] & 0x7f) * 5;
 719                         for (j = 0; j < sband->n_bitrates; j++) {
 720                                 if (sband->bitrates[j].bitrate == rate)
 721                                         rates |= BIT(j);
 722                         }
 723                 }
 724                 sta->sta.supp_rates[local->oper_channel->band] = rates;
 725         }
 726
 727         if (params->ht_capa)
 728                 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
 729                                                   params->ht_capa,
 730                                                   &sta->sta.ht_cap);
 731
 732         if (ieee80211_vif_is_mesh(&sdata->vif)) {
 733 #ifdef CONFIG_MAC80211_MESH
 734                 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED)
 735                         switch (params->plink_state) {
 736                         case NL80211_PLINK_LISTEN:
 737                         case NL80211_PLINK_ESTAB:
 738                         case NL80211_PLINK_BLOCKED:
 739                                 sta->plink_state = params->plink_state;
 740                                 break;
 741                         default:
 742                                 /*  nothing  */
 743                                 break;
 744                         }
 745                 else
 746                         switch (params->plink_action) {
 747                         case PLINK_ACTION_OPEN:
 748                                 mesh_plink_open(sta);
 749                                 break;
 750                         case PLINK_ACTION_BLOCK:
 751                                 mesh_plink_block(sta);
 752                                 break;
 753                         }
 754 #endif
 755         }
 756 }
 757
 758 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 759                                  u8 *mac, struct station_parameters *params)
 760 {
 761         struct ieee80211_local *local = wiphy_priv(wiphy);
 762         struct sta_info *sta;
 763         struct ieee80211_sub_if_data *sdata;
 764         int err;
 765         int layer2_update;
 766
 767         if (params->vlan) {
 768                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 769
 770                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 771                     sdata->vif.type != NL80211_IFTYPE_AP)
 772                         return -EINVAL;
 773         } else
 774                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 775
 776         if (compare_ether_addr(mac, sdata->vif.addr) == 0)
 777                 return -EINVAL;
 778
 779         if (is_multicast_ether_addr(mac))
 780                 return -EINVAL;
 781
 782         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
 783         if (!sta)
 784                 return -ENOMEM;
 785
 786         sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC;
 787
 788         sta_apply_parameters(local, sta, params);
 789
 790         rate_control_rate_init(sta);
 791
 792         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
 793                 sdata->vif.type == NL80211_IFTYPE_AP;
 794
 795         err = sta_info_insert_rcu(sta);
 796         if (err) {
 797                 rcu_read_unlock();
 798                 return err;
 799         }
 800
 801         if (layer2_update)
 802                 ieee80211_send_layer2_update(sta);
 803
 804         rcu_read_unlock();
 805
 806         return 0;
 807 }
 808
 809 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
 810                                  u8 *mac)
 811 {
 812         struct ieee80211_local *local = wiphy_priv(wiphy);
 813         struct ieee80211_sub_if_data *sdata;
 814
 815         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 816
 817         if (mac)
 818                 return sta_info_destroy_addr_bss(sdata, mac);
 819
 820         sta_info_flush(local, sdata);
 821         return 0;
 822 }
 823
 824 static int ieee80211_change_station(struct wiphy *wiphy,
 825                                     struct net_device *dev,
 826                                     u8 *mac,
 827                                     struct station_parameters *params)
 828 {
 829         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 830         struct ieee80211_local *local = wiphy_priv(wiphy);
 831         struct sta_info *sta;
 832         struct ieee80211_sub_if_data *vlansdata;
 833
 834         rcu_read_lock();
 835
 836         sta = sta_info_get_bss(sdata, mac);
 837         if (!sta) {
 838                 rcu_read_unlock();
 839                 return -ENOENT;
 840         }
 841
 842         if (params->vlan && params->vlan != sta->sdata->dev) {
 843                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
 844
 845                 if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
 846                     vlansdata->vif.type != NL80211_IFTYPE_AP) {
 847                         rcu_read_unlock();
 848                         return -EINVAL;
 849                 }
 850
 851                 if (params->vlan->ieee80211_ptr->use_4addr) {
 852                         if (vlansdata->u.vlan.sta) {
 853                                 rcu_read_unlock();
 854                                 return -EBUSY;
 855                         }
 856
 857                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
 858                 }
 859
 860                 sta->sdata = vlansdata;
 861                 ieee80211_send_layer2_update(sta);
 862         }
 863
 864         sta_apply_parameters(local, sta, params);
 865
 866         rcu_read_unlock();
 867
 868         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
 869             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))
 870                 ieee80211_recalc_ps(local, -1);
 871
 872         return 0;
 873 }
 874
 875 #ifdef CONFIG_MAC80211_MESH
 876 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
 877                                  u8 *dst, u8 *next_hop)
 878 {
 879         struct ieee80211_sub_if_data *sdata;
 880         struct mesh_path *mpath;
 881         struct sta_info *sta;
 882         int err;
 883
 884         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 885
 886         rcu_read_lock();
 887         sta = sta_info_get(sdata, next_hop);
 888         if (!sta) {
 889                 rcu_read_unlock();
 890                 return -ENOENT;
 891         }
 892
 893         err = mesh_path_add(dst, sdata);
 894         if (err) {
 895                 rcu_read_unlock();
 896                 return err;
 897         }
 898
 899         mpath = mesh_path_lookup(dst, sdata);
 900         if (!mpath) {
 901                 rcu_read_unlock();
 902                 return -ENXIO;
 903         }
 904         mesh_path_fix_nexthop(mpath, sta);
 905
 906         rcu_read_unlock();
 907         return 0;
 908 }
 909
 910 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
 911                                  u8 *dst)
 912 {
 913         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 914
 915         if (dst)
 916                 return mesh_path_del(dst, sdata);
 917
 918         mesh_path_flush(sdata);
 919         return 0;
 920 }
 921
 922 static int ieee80211_change_mpath(struct wiphy *wiphy,
 923                                     struct net_device *dev,
 924                                     u8 *dst, u8 *next_hop)
 925 {
 926         struct ieee80211_sub_if_data *sdata;
 927         struct mesh_path *mpath;
 928         struct sta_info *sta;
 929
 930         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 931
 932         rcu_read_lock();
 933
 934         sta = sta_info_get(sdata, next_hop);
 935         if (!sta) {
 936                 rcu_read_unlock();
 937                 return -ENOENT;
 938         }
 939
 940         mpath = mesh_path_lookup(dst, sdata);
 941         if (!mpath) {
 942                 rcu_read_unlock();
 943                 return -ENOENT;
 944         }
 945
 946         mesh_path_fix_nexthop(mpath, sta);
 947
 948         rcu_read_unlock();
 949         return 0;
 950 }
 951
 952 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
 953                             struct mpath_info *pinfo)
 954 {
 955         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
 956
 957         if (next_hop_sta)
 958                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
 959         else
 960                 memset(next_hop, 0, ETH_ALEN);
 961
 962         pinfo->generation = mesh_paths_generation;
 963
 964         pinfo->filled = MPATH_INFO_FRAME_QLEN |
 965                         MPATH_INFO_SN |
 966                         MPATH_INFO_METRIC |
 967                         MPATH_INFO_EXPTIME |
 968                         MPATH_INFO_DISCOVERY_TIMEOUT |
 969                         MPATH_INFO_DISCOVERY_RETRIES |
 970                         MPATH_INFO_FLAGS;
 971
 972         pinfo->frame_qlen = mpath->frame_queue.qlen;
 973         pinfo->sn = mpath->sn;
 974         pinfo->metric = mpath->metric;
 975         if (time_before(jiffies, mpath->exp_time))
 976                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
 977         pinfo->discovery_timeout =
 978                         jiffies_to_msecs(mpath->discovery_timeout);
 979         pinfo->discovery_retries = mpath->discovery_retries;
 980         pinfo->flags = 0;
 981         if (mpath->flags & MESH_PATH_ACTIVE)
 982                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
 983         if (mpath->flags & MESH_PATH_RESOLVING)
 984                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 985         if (mpath->flags & MESH_PATH_SN_VALID)
 986                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
 987         if (mpath->flags & MESH_PATH_FIXED)
 988                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
 989         if (mpath->flags & MESH_PATH_RESOLVING)
 990                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
 991
 992         pinfo->flags = mpath->flags;
 993 }
 994
 995 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
 996                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
 997
 998 {
 999         struct ieee80211_sub_if_data *sdata;
1000         struct mesh_path *mpath;
1001
1002         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1003
1004         rcu_read_lock();
1005         mpath = mesh_path_lookup(dst, sdata);
1006         if (!mpath) {
1007                 rcu_read_unlock();
1008                 return -ENOENT;
1009         }
1010         memcpy(dst, mpath->dst, ETH_ALEN);
1011         mpath_set_pinfo(mpath, next_hop, pinfo);
1012         rcu_read_unlock();
1013         return 0;
1014 }
1015
1016 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1017                                  int idx, u8 *dst, u8 *next_hop,
1018                                  struct mpath_info *pinfo)
1019 {
1020         struct ieee80211_sub_if_data *sdata;
1021         struct mesh_path *mpath;
1022
1023         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1024
1025         rcu_read_lock();
1026         mpath = mesh_path_lookup_by_idx(idx, sdata);
1027         if (!mpath) {
1028                 rcu_read_unlock();
1029                 return -ENOENT;
1030         }
1031         memcpy(dst, mpath->dst, ETH_ALEN);
1032         mpath_set_pinfo(mpath, next_hop, pinfo);
1033         rcu_read_unlock();
1034         return 0;
1035 }
1036
1037 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1038                                 struct net_device *dev,
1039                                 struct mesh_config *conf)
1040 {
1041         struct ieee80211_sub_if_data *sdata;
1042         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1043
1044         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1045         return 0;
1046 }
1047
1048 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1049 {
1050         return (mask >> (parm-1)) & 0x1;
1051 }
1052
1053 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1054                 const struct mesh_setup *setup)
1055 {
1056         u8 *new_ie;
1057         const u8 *old_ie;
1058
1059         /* allocate information elements */
1060         new_ie = NULL;
1061         old_ie = ifmsh->ie;
1062
1063         if (setup->ie_len) {
1064                 new_ie = kmemdup(setup->ie, setup->ie_len,
1065                                 GFP_KERNEL);
1066                 if (!new_ie)
1067                         return -ENOMEM;
1068         }
1069         ifmsh->ie_len = setup->ie_len;
1070         ifmsh->ie = new_ie;
1071         kfree(old_ie);
1072
1073         /* now copy the rest of the setup parameters */
1074         ifmsh->mesh_id_len = setup->mesh_id_len;
1075         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1076         ifmsh->mesh_pp_id = setup->path_sel_proto;
1077         ifmsh->mesh_pm_id = setup->path_metric;
1078         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1079         if (setup->is_authenticated)
1080                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1081         if (setup->is_secure)
1082                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1083
1084         return 0;
1085 }
1086
1087 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1088                                         struct net_device *dev, u32 mask,
1089                                         const struct mesh_config *nconf)
1090 {
1091         struct mesh_config *conf;
1092         struct ieee80211_sub_if_data *sdata;
1093         struct ieee80211_if_mesh *ifmsh;
1094
1095         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1096         ifmsh = &sdata->u.mesh;
1097
1098         /* Set the config options which we are interested in setting */
1099         conf = &(sdata->u.mesh.mshcfg);
1100         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1101                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1102         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1103                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1104         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1105                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1106         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1107                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1108         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1109                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1110         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1111                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1112         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1113                 conf->dot11MeshTTL = nconf->element_ttl;
1114         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
1115                 conf->auto_open_plinks = nconf->auto_open_plinks;
1116         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1117                 conf->dot11MeshHWMPmaxPREQretries =
1118                         nconf->dot11MeshHWMPmaxPREQretries;
1119         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1120                 conf->path_refresh_time = nconf->path_refresh_time;
1121         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1122                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1123         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1124                 conf->dot11MeshHWMPactivePathTimeout =
1125                         nconf->dot11MeshHWMPactivePathTimeout;
1126         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1127                 conf->dot11MeshHWMPpreqMinInterval =
1128                         nconf->dot11MeshHWMPpreqMinInterval;
1129         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1130                            mask))
1131                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1132                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1133         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1134                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1135                 ieee80211_mesh_root_setup(ifmsh);
1136         }
1137         return 0;
1138 }
1139
1140 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1141                                const struct mesh_config *conf,
1142                                const struct mesh_setup *setup)
1143 {
1144         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1145         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1146         int err;
1147
1148         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1149         err = copy_mesh_setup(ifmsh, setup);
1150         if (err)
1151                 return err;
1152         ieee80211_start_mesh(sdata);
1153
1154         return 0;
1155 }
1156
1157 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1158 {
1159         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1160
1161         ieee80211_stop_mesh(sdata);
1162
1163         return 0;
1164 }
1165 #endif
1166
1167 static int ieee80211_change_bss(struct wiphy *wiphy,
1168                                 struct net_device *dev,
1169                                 struct bss_parameters *params)
1170 {
1171         struct ieee80211_sub_if_data *sdata;
1172         u32 changed = 0;
1173
1174         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1175
1176         if (params->use_cts_prot >= 0) {
1177                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1178                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1179         }
1180         if (params->use_short_preamble >= 0) {
1181                 sdata->vif.bss_conf.use_short_preamble =
1182                         params->use_short_preamble;
1183                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1184         }
1185
1186         if (!sdata->vif.bss_conf.use_short_slot &&
1187             sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) {
1188                 sdata->vif.bss_conf.use_short_slot = true;
1189                 changed |= BSS_CHANGED_ERP_SLOT;
1190         }
1191
1192         if (params->use_short_slot_time >= 0) {
1193                 sdata->vif.bss_conf.use_short_slot =
1194                         params->use_short_slot_time;
1195                 changed |= BSS_CHANGED_ERP_SLOT;
1196         }
1197
1198         if (params->basic_rates) {
1199                 int i, j;
1200                 u32 rates = 0;
1201                 struct ieee80211_local *local = wiphy_priv(wiphy);
1202                 struct ieee80211_supported_band *sband =
1203                         wiphy->bands[local->oper_channel->band];
1204
1205                 for (i = 0; i < params->basic_rates_len; i++) {
1206                         int rate = (params->basic_rates[i] & 0x7f) * 5;
1207                         for (j = 0; j < sband->n_bitrates; j++) {
1208                                 if (sband->bitrates[j].bitrate == rate)
1209                                         rates |= BIT(j);
1210                         }
1211                 }
1212                 sdata->vif.bss_conf.basic_rates = rates;
1213                 changed |= BSS_CHANGED_BASIC_RATES;
1214         }
1215
1216         if (params->ap_isolate >= 0) {
1217                 if (params->ap_isolate)
1218                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1219                 else
1220                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1221         }
1222
1223         if (params->ht_opmode >= 0) {
1224                 sdata->vif.bss_conf.ht_operation_mode =
1225                         (u16) params->ht_opmode;
1226                 changed |= BSS_CHANGED_HT;
1227         }
1228
1229         ieee80211_bss_info_change_notify(sdata, changed);
1230
1231         return 0;
1232 }
1233
1234 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1235                                     struct ieee80211_txq_params *params)
1236 {
1237         struct ieee80211_local *local = wiphy_priv(wiphy);
1238         struct ieee80211_tx_queue_params p;
1239
1240         if (!local->ops->conf_tx)
1241                 return -EOPNOTSUPP;
1242
1243         memset(&p, 0, sizeof(p));
1244         p.aifs = params->aifs;
1245         p.cw_max = params->cwmax;
1246         p.cw_min = params->cwmin;
1247         p.txop = params->txop;
1248
1249         /*
1250          * Setting tx queue params disables u-apsd because it's only
1251          * called in master mode.
1252          */
1253         p.uapsd = false;
1254
1255         if (drv_conf_tx(local, params->queue, &p)) {
1256                 wiphy_debug(local->hw.wiphy,
1257                             "failed to set TX queue parameters for queue %d\n",
1258                             params->queue);
1259                 return -EINVAL;
1260         }
1261
1262         return 0;
1263 }
1264
1265 static int ieee80211_set_channel(struct wiphy *wiphy,
1266                                  struct net_device *netdev,
1267                                  struct ieee80211_channel *chan,
1268                                  enum nl80211_channel_type channel_type)
1269 {
1270         struct ieee80211_local *local = wiphy_priv(wiphy);
1271         struct ieee80211_sub_if_data *sdata = NULL;
1272         struct ieee80211_channel *old_oper;
1273         enum nl80211_channel_type old_oper_type;
1274         enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT;
1275
1276         if (netdev)
1277                 sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
1278
1279         switch (ieee80211_get_channel_mode(local, NULL)) {
1280         case CHAN_MODE_HOPPING:
1281                 return -EBUSY;
1282         case CHAN_MODE_FIXED:
1283                 if (local->oper_channel != chan)
1284                         return -EBUSY;
1285                 if (!sdata && local->_oper_channel_type == channel_type)
1286                         return 0;
1287                 break;
1288         case CHAN_MODE_UNDEFINED:
1289                 break;
1290         }
1291
1292         if (sdata)
1293                 old_vif_oper_type = sdata->vif.bss_conf.channel_type;
1294         old_oper_type = local->_oper_channel_type;
1295
1296         if (!ieee80211_set_channel_type(local, sdata, channel_type))
1297                 return -EBUSY;
1298
1299         old_oper = local->oper_channel;
1300         local->oper_channel = chan;
1301
1302         /* Update driver if changes were actually made. */
1303         if ((old_oper != local->oper_channel) ||
1304             (old_oper_type != local->_oper_channel_type))
1305                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
1306
1307         if ((sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) &&
1308             old_vif_oper_type != sdata->vif.bss_conf.channel_type)
1309                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1310
1311         return 0;
1312 }
1313
1314 #ifdef CONFIG_PM
1315 static int ieee80211_suspend(struct wiphy *wiphy,
1316                              struct cfg80211_wowlan *wowlan)
1317 {
1318         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1319 }
1320
1321 static int ieee80211_resume(struct wiphy *wiphy)
1322 {
1323         return __ieee80211_resume(wiphy_priv(wiphy));
1324 }
1325 #else
1326 #define ieee80211_suspend NULL
1327 #define ieee80211_resume NULL
1328 #endif
1329
1330 static int ieee80211_scan(struct wiphy *wiphy,
1331                           struct net_device *dev,
1332                           struct cfg80211_scan_request *req)
1333 {
1334         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1335
1336         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1337         case NL80211_IFTYPE_STATION:
1338         case NL80211_IFTYPE_ADHOC:
1339         case NL80211_IFTYPE_MESH_POINT:
1340         case NL80211_IFTYPE_P2P_CLIENT:
1341                 break;
1342         case NL80211_IFTYPE_P2P_GO:
1343                 if (sdata->local->ops->hw_scan)
1344                         break;
1345                 /*
1346                  * FIXME: implement NoA while scanning in software,
1347                  * for now fall through to allow scanning only when
1348                  * beaconing hasn't been configured yet
1349                  */
1350         case NL80211_IFTYPE_AP:
1351                 if (sdata->u.ap.beacon)
1352                         return -EOPNOTSUPP;
1353                 break;
1354         default:
1355                 return -EOPNOTSUPP;
1356         }
1357
1358         return ieee80211_request_scan(sdata, req);
1359 }
1360
1361 static int
1362 ieee80211_sched_scan_start(struct wiphy *wiphy,
1363                            struct net_device *dev,
1364                            struct cfg80211_sched_scan_request *req)
1365 {
1366         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1367
1368         if (!sdata->local->ops->sched_scan_start)
1369                 return -EOPNOTSUPP;
1370
1371         return ieee80211_request_sched_scan_start(sdata, req);
1372 }
1373
1374 static int
1375 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
1376 {
1377         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1378
1379         if (!sdata->local->ops->sched_scan_stop)
1380                 return -EOPNOTSUPP;
1381
1382         return ieee80211_request_sched_scan_stop(sdata);
1383 }
1384
1385 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
1386                           struct cfg80211_auth_request *req)
1387 {
1388         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
1389 }
1390
1391 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
1392                            struct cfg80211_assoc_request *req)
1393 {
1394         struct ieee80211_local *local = wiphy_priv(wiphy);
1395         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1396
1397         switch (ieee80211_get_channel_mode(local, sdata)) {
1398         case CHAN_MODE_HOPPING:
1399                 return -EBUSY;
1400         case CHAN_MODE_FIXED:
1401                 if (local->oper_channel == req->bss->channel)
1402                         break;
1403                 return -EBUSY;
1404         case CHAN_MODE_UNDEFINED:
1405                 break;
1406         }
1407
1408         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
1409 }
1410
1411 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
1412                             struct cfg80211_deauth_request *req,
1413                             void *cookie)
1414 {
1415         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev),
1416                                     req, cookie);
1417 }
1418
1419 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
1420                               struct cfg80211_disassoc_request *req,
1421                               void *cookie)
1422 {
1423         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev),
1424                                       req, cookie);
1425 }
1426
1427 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1428                                struct cfg80211_ibss_params *params)
1429 {
1430         struct ieee80211_local *local = wiphy_priv(wiphy);
1431         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1432
1433         switch (ieee80211_get_channel_mode(local, sdata)) {
1434         case CHAN_MODE_HOPPING:
1435                 return -EBUSY;
1436         case CHAN_MODE_FIXED:
1437                 if (!params->channel_fixed)
1438                         return -EBUSY;
1439                 if (local->oper_channel == params->channel)
1440                         break;
1441                 return -EBUSY;
1442         case CHAN_MODE_UNDEFINED:
1443                 break;
1444         }
1445
1446         return ieee80211_ibss_join(sdata, params);
1447 }
1448
1449 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
1450 {
1451         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1452
1453         return ieee80211_ibss_leave(sdata);
1454 }
1455
1456 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1457 {
1458         struct ieee80211_local *local = wiphy_priv(wiphy);
1459         int err;
1460
1461         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1462                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
1463
1464                 if (err)
1465                         return err;
1466         }
1467
1468         if (changed & WIPHY_PARAM_COVERAGE_CLASS) {
1469                 err = drv_set_coverage_class(local, wiphy->coverage_class);
1470
1471                 if (err)
1472                         return err;
1473         }
1474
1475         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1476                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
1477
1478                 if (err)
1479                         return err;
1480         }
1481
1482         if (changed & WIPHY_PARAM_RETRY_SHORT)
1483                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
1484         if (changed & WIPHY_PARAM_RETRY_LONG)
1485                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
1486         if (changed &
1487             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
1488                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
1489
1490         return 0;
1491 }
1492
1493 static int ieee80211_set_tx_power(struct wiphy *wiphy,
1494                                   enum nl80211_tx_power_setting type, int mbm)
1495 {
1496         struct ieee80211_local *local = wiphy_priv(wiphy);
1497         struct ieee80211_channel *chan = local->hw.conf.channel;
1498         u32 changes = 0;
1499
1500         switch (type) {
1501         case NL80211_TX_POWER_AUTOMATIC:
1502                 local->user_power_level = -1;
1503                 break;
1504         case NL80211_TX_POWER_LIMITED:
1505                 if (mbm < 0 || (mbm % 100))
1506                         return -EOPNOTSUPP;
1507                 local->user_power_level = MBM_TO_DBM(mbm);
1508                 break;
1509         case NL80211_TX_POWER_FIXED:
1510                 if (mbm < 0 || (mbm % 100))
1511                         return -EOPNOTSUPP;
1512                 /* TODO: move to cfg80211 when it knows the channel */
1513                 if (MBM_TO_DBM(mbm) > chan->max_power)
1514                         return -EINVAL;
1515                 local->user_power_level = MBM_TO_DBM(mbm);
1516                 break;
1517         }
1518
1519         ieee80211_hw_config(local, changes);
1520
1521         return 0;
1522 }
1523
1524 static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm)
1525 {
1526         struct ieee80211_local *local = wiphy_priv(wiphy);
1527
1528         *dbm = local->hw.conf.power_level;
1529
1530         return 0;
1531 }
1532
1533 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
1534                                   const u8 *addr)
1535 {
1536         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1537
1538         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
1539
1540         return 0;
1541 }
1542
1543 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
1544 {
1545         struct ieee80211_local *local = wiphy_priv(wiphy);
1546
1547         drv_rfkill_poll(local);
1548 }
1549
1550 #ifdef CONFIG_NL80211_TESTMODE
1551 static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len)
1552 {
1553         struct ieee80211_local *local = wiphy_priv(wiphy);
1554
1555         if (!local->ops->testmode_cmd)
1556                 return -EOPNOTSUPP;
1557
1558         return local->ops->testmode_cmd(&local->hw, data, len);
1559 }
1560
1561 static int ieee80211_testmode_dump(struct wiphy *wiphy,
1562                                    struct sk_buff *skb,
1563                                    struct netlink_callback *cb,
1564                                    void *data, int len)
1565 {
1566         struct ieee80211_local *local = wiphy_priv(wiphy);
1567
1568         if (!local->ops->testmode_dump)
1569                 return -EOPNOTSUPP;
1570
1571         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
1572 }
1573 #endif
1574
1575 int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
1576                              enum ieee80211_smps_mode smps_mode)
1577 {
1578         const u8 *ap;
1579         enum ieee80211_smps_mode old_req;
1580         int err;
1581
1582         lockdep_assert_held(&sdata->u.mgd.mtx);
1583
1584         old_req = sdata->u.mgd.req_smps;
1585         sdata->u.mgd.req_smps = smps_mode;
1586
1587         if (old_req == smps_mode &&
1588             smps_mode != IEEE80211_SMPS_AUTOMATIC)
1589                 return 0;
1590
1591         /*
1592          * If not associated, or current association is not an HT
1593          * association, there's no need to send an action frame.
1594          */
1595         if (!sdata->u.mgd.associated ||
1596             sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
1597                 mutex_lock(&sdata->local->iflist_mtx);
1598                 ieee80211_recalc_smps(sdata->local);
1599                 mutex_unlock(&sdata->local->iflist_mtx);
1600                 return 0;
1601         }
1602
1603         ap = sdata->u.mgd.associated->bssid;
1604
1605         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
1606                 if (sdata->u.mgd.powersave)
1607                         smps_mode = IEEE80211_SMPS_DYNAMIC;
1608                 else
1609                         smps_mode = IEEE80211_SMPS_OFF;
1610         }
1611
1612         /* send SM PS frame to AP */
1613         err = ieee80211_send_smps_action(sdata, smps_mode,
1614                                          ap, ap);
1615         if (err)
1616                 sdata->u.mgd.req_smps = old_req;
1617
1618         return err;
1619 }
1620
1621 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
1622                                     bool enabled, int timeout)
1623 {
1624         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1625         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1626
1627         if (sdata->vif.type != NL80211_IFTYPE_STATION)
1628                 return -EOPNOTSUPP;
1629
1630         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS))
1631                 return -EOPNOTSUPP;
1632
1633         if (enabled == sdata->u.mgd.powersave &&
1634             timeout == local->dynamic_ps_forced_timeout)
1635                 return 0;
1636
1637         sdata->u.mgd.powersave = enabled;
1638         local->dynamic_ps_forced_timeout = timeout;
1639
1640         /* no change, but if automatic follow powersave */
1641         mutex_lock(&sdata->u.mgd.mtx);
1642         __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
1643         mutex_unlock(&sdata->u.mgd.mtx);
1644
1645         if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
1646                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
1647
1648         ieee80211_recalc_ps(local, -1);
1649
1650         return 0;
1651 }
1652
1653 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
1654                                          struct net_device *dev,
1655                                          s32 rssi_thold, u32 rssi_hyst)
1656 {
1657         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1658         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1659         struct ieee80211_vif *vif = &sdata->vif;
1660         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1661
1662         if (rssi_thold == bss_conf->cqm_rssi_thold &&
1663             rssi_hyst == bss_conf->cqm_rssi_hyst)
1664                 return 0;
1665
1666         bss_conf->cqm_rssi_thold = rssi_thold;
1667         bss_conf->cqm_rssi_hyst = rssi_hyst;
1668
1669         if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1670                 if (sdata->vif.type != NL80211_IFTYPE_STATION)
1671                         return -EOPNOTSUPP;
1672                 return 0;
1673         }
1674
1675         /* tell the driver upon association, unless already associated */
1676         if (sdata->u.mgd.associated)
1677                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
1678
1679         return 0;
1680 }
1681
1682 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
1683                                       struct net_device *dev,
1684                                       const u8 *addr,
1685                                       const struct cfg80211_bitrate_mask *mask)
1686 {
1687         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1688         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
1689         int i, ret;
1690
1691         if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
1692                 ret = drv_set_bitrate_mask(local, sdata, mask);
1693                 if (ret)
1694                         return ret;
1695         }
1696
1697         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
1698                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
1699
1700         return 0;
1701 }
1702
1703 static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local,
1704                                           struct net_device *dev,
1705                                           struct ieee80211_channel *chan,
1706                                           enum nl80211_channel_type chantype,
1707                                           unsigned int duration, u64 *cookie)
1708 {
1709         int ret;
1710         u32 random_cookie;
1711
1712         lockdep_assert_held(&local->mtx);
1713
1714         if (local->hw_roc_cookie)
1715                 return -EBUSY;
1716         /* must be nonzero */
1717         random_cookie = random32() | 1;
1718
1719         *cookie = random_cookie;
1720         local->hw_roc_dev = dev;
1721         local->hw_roc_cookie = random_cookie;
1722         local->hw_roc_channel = chan;
1723         local->hw_roc_channel_type = chantype;
1724         local->hw_roc_duration = duration;
1725         ret = drv_remain_on_channel(local, chan, chantype, duration);
1726         if (ret) {
1727                 local->hw_roc_channel = NULL;
1728                 local->hw_roc_cookie = 0;
1729         }
1730
1731         return ret;
1732 }
1733
1734 static int ieee80211_remain_on_channel(struct wiphy *wiphy,
1735                                        struct net_device *dev,
1736                                        struct ieee80211_channel *chan,
1737                                        enum nl80211_channel_type channel_type,
1738                                        unsigned int duration,
1739                                        u64 *cookie)
1740 {
1741         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1742         struct ieee80211_local *local = sdata->local;
1743
1744         if (local->ops->remain_on_channel) {
1745                 int ret;
1746
1747                 mutex_lock(&local->mtx);
1748                 ret = ieee80211_remain_on_channel_hw(local, dev,
1749                                                      chan, channel_type,
1750                                                      duration, cookie);
1751                 local->hw_roc_for_tx = false;
1752                 mutex_unlock(&local->mtx);
1753
1754                 return ret;
1755         }
1756
1757         return ieee80211_wk_remain_on_channel(sdata, chan, channel_type,
1758                                               duration, cookie);
1759 }
1760
1761 static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local,
1762                                                  u64 cookie)
1763 {
1764         int ret;
1765
1766         lockdep_assert_held(&local->mtx);
1767
1768         if (local->hw_roc_cookie != cookie)
1769                 return -ENOENT;
1770
1771         ret = drv_cancel_remain_on_channel(local);
1772         if (ret)
1773                 return ret;
1774
1775         local->hw_roc_cookie = 0;
1776         local->hw_roc_channel = NULL;
1777
1778         ieee80211_recalc_idle(local);
1779
1780         return 0;
1781 }
1782
1783 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
1784                                               struct net_device *dev,
1785                                               u64 cookie)
1786 {
1787         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1788         struct ieee80211_local *local = sdata->local;
1789
1790         if (local->ops->cancel_remain_on_channel) {
1791                 int ret;
1792
1793                 mutex_lock(&local->mtx);
1794                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
1795                 mutex_unlock(&local->mtx);
1796
1797                 return ret;
1798         }
1799
1800         return ieee80211_wk_cancel_remain_on_channel(sdata, cookie);
1801 }
1802
1803 static enum work_done_result
1804 ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb)
1805 {
1806         /*
1807          * Use the data embedded in the work struct for reporting
1808          * here so if the driver mangled the SKB before dropping
1809          * it (which is the only way we really should get here)
1810          * then we don't report mangled data.
1811          *
1812          * If there was no wait time, then by the time we get here
1813          * the driver will likely not have reported the status yet,
1814          * so in that case userspace will have to deal with it.
1815          */
1816
1817         if (wk->offchan_tx.wait && wk->offchan_tx.frame)
1818                 cfg80211_mgmt_tx_status(wk->sdata->dev,
1819                                         (unsigned long) wk->offchan_tx.frame,
1820                                         wk->ie, wk->ie_len, false, GFP_KERNEL);
1821
1822         return WORK_DONE_DESTROY;
1823 }
1824
1825 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
1826                              struct ieee80211_channel *chan, bool offchan,
1827                              enum nl80211_channel_type channel_type,
1828                              bool channel_type_valid, unsigned int wait,
1829                              const u8 *buf, size_t len, u64 *cookie)
1830 {
1831         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1832         struct ieee80211_local *local = sdata->local;
1833         struct sk_buff *skb;
1834         struct sta_info *sta;
1835         struct ieee80211_work *wk;
1836         const struct ieee80211_mgmt *mgmt = (void *)buf;
1837         u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX |
1838                     IEEE80211_TX_CTL_REQ_TX_STATUS;
1839         bool is_offchan = false;
1840
1841         /* Check that we are on the requested channel for transmission */
1842         if (chan != local->tmp_channel &&
1843             chan != local->oper_channel)
1844                 is_offchan = true;
1845         if (channel_type_valid &&
1846             (channel_type != local->tmp_channel_type &&
1847              channel_type != local->_oper_channel_type))
1848                 is_offchan = true;
1849
1850         if (chan == local->hw_roc_channel) {
1851                 /* TODO: check channel type? */
1852                 is_offchan = false;
1853                 flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1854         }
1855
1856         if (is_offchan && !offchan)
1857                 return -EBUSY;
1858
1859         switch (sdata->vif.type) {
1860         case NL80211_IFTYPE_ADHOC:
1861         case NL80211_IFTYPE_AP:
1862         case NL80211_IFTYPE_AP_VLAN:
1863         case NL80211_IFTYPE_P2P_GO:
1864         case NL80211_IFTYPE_MESH_POINT:
1865                 if (!ieee80211_is_action(mgmt->frame_control) ||
1866                     mgmt->u.action.category == WLAN_CATEGORY_PUBLIC)
1867                         break;
1868                 rcu_read_lock();
1869                 sta = sta_info_get(sdata, mgmt->da);
1870                 rcu_read_unlock();
1871                 if (!sta)
1872                         return -ENOLINK;
1873                 break;
1874         case NL80211_IFTYPE_STATION:
1875         case NL80211_IFTYPE_P2P_CLIENT:
1876                 break;
1877         default:
1878                 return -EOPNOTSUPP;
1879         }
1880
1881         skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
1882         if (!skb)
1883                 return -ENOMEM;
1884         skb_reserve(skb, local->hw.extra_tx_headroom);
1885
1886         memcpy(skb_put(skb, len), buf, len);
1887
1888         IEEE80211_SKB_CB(skb)->flags = flags;
1889
1890         skb->dev = sdata->dev;
1891
1892         *cookie = (unsigned long) skb;
1893
1894         if (is_offchan && local->ops->offchannel_tx) {
1895                 int ret;
1896
1897                 IEEE80211_SKB_CB(skb)->band = chan->band;
1898
1899                 mutex_lock(&local->mtx);
1900
1901                 if (local->hw_offchan_tx_cookie) {
1902                         mutex_unlock(&local->mtx);
1903                         return -EBUSY;
1904                 }
1905
1906                 /* TODO: bitrate control, TX processing? */
1907                 ret = drv_offchannel_tx(local, skb, chan, channel_type, wait);
1908
1909                 if (ret == 0)
1910                         local->hw_offchan_tx_cookie = *cookie;
1911                 mutex_unlock(&local->mtx);
1912
1913                 /*
1914                  * Allow driver to return 1 to indicate it wants to have the
1915                  * frame transmitted with a remain_on_channel + regular TX.
1916                  */
1917                 if (ret != 1)
1918                         return ret;
1919         }
1920
1921         if (is_offchan && local->ops->remain_on_channel) {
1922                 unsigned int duration;
1923                 int ret;
1924
1925                 mutex_lock(&local->mtx);
1926                 /*
1927                  * If the duration is zero, then the driver
1928                  * wouldn't actually do anything. Set it to
1929                  * 100 for now.
1930                  *
1931                  * TODO: cancel the off-channel operation
1932                  *       when we get the SKB's TX status and
1933                  *       the wait time was zero before.
1934                  */
1935                 duration = 100;
1936                 if (wait)
1937                         duration = wait;
1938                 ret = ieee80211_remain_on_channel_hw(local, dev, chan,
1939                                                      channel_type,
1940                                                      duration, cookie);
1941                 if (ret) {
1942                         kfree_skb(skb);
1943                         mutex_unlock(&local->mtx);
1944                         return ret;
1945                 }
1946
1947                 local->hw_roc_for_tx = true;
1948                 local->hw_roc_duration = wait;
1949
1950                 /*
1951                  * queue up frame for transmission after
1952                  * ieee80211_ready_on_channel call
1953                  */
1954
1955                 /* modify cookie to prevent API mismatches */
1956                 *cookie ^= 2;
1957                 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN;
1958                 local->hw_roc_skb = skb;
1959                 local->hw_roc_skb_for_status = skb;
1960                 mutex_unlock(&local->mtx);
1961
1962                 return 0;
1963         }
1964
1965         /*
1966          * Can transmit right away if the channel was the
1967          * right one and there's no wait involved... If a
1968          * wait is involved, we might otherwise not be on
1969          * the right channel for long enough!
1970          */
1971         if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) {
1972                 ieee80211_tx_skb(sdata, skb);
1973                 return 0;
1974         }
1975
1976         wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL);
1977         if (!wk) {
1978                 kfree_skb(skb);
1979                 return -ENOMEM;
1980         }
1981
1982         wk->type = IEEE80211_WORK_OFFCHANNEL_TX;
1983         wk->chan = chan;
1984         wk->chan_type = channel_type;
1985         wk->sdata = sdata;
1986         wk->done = ieee80211_offchan_tx_done;
1987         wk->offchan_tx.frame = skb;
1988         wk->offchan_tx.wait = wait;
1989         wk->ie_len = len;
1990         memcpy(wk->ie, buf, len);
1991
1992         ieee80211_add_work(wk);
1993         return 0;
1994 }
1995
1996 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy,
1997                                          struct net_device *dev,
1998                                          u64 cookie)
1999 {
2000         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2001         struct ieee80211_local *local = sdata->local;
2002         struct ieee80211_work *wk;
2003         int ret = -ENOENT;
2004
2005         mutex_lock(&local->mtx);
2006
2007         if (local->ops->offchannel_tx_cancel_wait &&
2008             local->hw_offchan_tx_cookie == cookie) {
2009                 ret = drv_offchannel_tx_cancel_wait(local);
2010
2011                 if (!ret)
2012                         local->hw_offchan_tx_cookie = 0;
2013
2014                 mutex_unlock(&local->mtx);
2015
2016                 return ret;
2017         }
2018
2019         if (local->ops->cancel_remain_on_channel) {
2020                 cookie ^= 2;
2021                 ret = ieee80211_cancel_remain_on_channel_hw(local, cookie);
2022
2023                 if (ret == 0) {
2024                         kfree_skb(local->hw_roc_skb);
2025                         local->hw_roc_skb = NULL;
2026                         local->hw_roc_skb_for_status = NULL;
2027                 }
2028
2029                 mutex_unlock(&local->mtx);
2030
2031                 return ret;
2032         }
2033
2034         list_for_each_entry(wk, &local->work_list, list) {
2035                 if (wk->sdata != sdata)
2036                         continue;
2037
2038                 if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX)
2039                         continue;
2040
2041                 if (cookie != (unsigned long) wk->offchan_tx.frame)
2042                         continue;
2043
2044                 wk->timeout = jiffies;
2045
2046                 ieee80211_queue_work(&local->hw, &local->work_work);
2047                 ret = 0;
2048                 break;
2049         }
2050         mutex_unlock(&local->mtx);
2051
2052         return ret;
2053 }
2054
2055 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
2056                                           struct net_device *dev,
2057                                           u16 frame_type, bool reg)
2058 {
2059         struct ieee80211_local *local = wiphy_priv(wiphy);
2060
2061         if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ))
2062                 return;
2063
2064         if (reg)
2065                 local->probe_req_reg++;
2066         else
2067                 local->probe_req_reg--;
2068
2069         ieee80211_queue_work(&local->hw, &local->reconfig_filter);
2070 }
2071
2072 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
2073 {
2074         struct ieee80211_local *local = wiphy_priv(wiphy);
2075
2076         if (local->started)
2077                 return -EOPNOTSUPP;
2078
2079         return drv_set_antenna(local, tx_ant, rx_ant);
2080 }
2081
2082 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
2083 {
2084         struct ieee80211_local *local = wiphy_priv(wiphy);
2085
2086         return drv_get_antenna(local, tx_ant, rx_ant);
2087 }
2088
2089 static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx)
2090 {
2091         struct ieee80211_local *local = wiphy_priv(wiphy);
2092
2093         return drv_set_ringparam(local, tx, rx);
2094 }
2095
2096 static void ieee80211_get_ringparam(struct wiphy *wiphy,
2097                                     u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max)
2098 {
2099         struct ieee80211_local *local = wiphy_priv(wiphy);
2100
2101         drv_get_ringparam(local, tx, tx_max, rx, rx_max);
2102 }
2103
2104 struct cfg80211_ops mac80211_config_ops = {
2105         .add_virtual_intf = ieee80211_add_iface,
2106         .del_virtual_intf = ieee80211_del_iface,
2107         .change_virtual_intf = ieee80211_change_iface,
2108         .add_key = ieee80211_add_key,
2109         .del_key = ieee80211_del_key,
2110         .get_key = ieee80211_get_key,
2111         .set_default_key = ieee80211_config_default_key,
2112         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
2113         .add_beacon = ieee80211_add_beacon,
2114         .set_beacon = ieee80211_set_beacon,
2115         .del_beacon = ieee80211_del_beacon,
2116         .add_station = ieee80211_add_station,
2117         .del_station = ieee80211_del_station,
2118         .change_station = ieee80211_change_station,
2119         .get_station = ieee80211_get_station,
2120         .dump_station = ieee80211_dump_station,
2121         .dump_survey = ieee80211_dump_survey,
2122 #ifdef CONFIG_MAC80211_MESH
2123         .add_mpath = ieee80211_add_mpath,
2124         .del_mpath = ieee80211_del_mpath,
2125         .change_mpath = ieee80211_change_mpath,
2126         .get_mpath = ieee80211_get_mpath,
2127         .dump_mpath = ieee80211_dump_mpath,
2128         .update_mesh_config = ieee80211_update_mesh_config,
2129         .get_mesh_config = ieee80211_get_mesh_config,
2130         .join_mesh = ieee80211_join_mesh,
2131         .leave_mesh = ieee80211_leave_mesh,
2132 #endif
2133         .change_bss = ieee80211_change_bss,
2134         .set_txq_params = ieee80211_set_txq_params,
2135         .set_channel = ieee80211_set_channel,
2136         .suspend = ieee80211_suspend,
2137         .resume = ieee80211_resume,
2138         .scan = ieee80211_scan,
2139         .sched_scan_start = ieee80211_sched_scan_start,
2140         .sched_scan_stop = ieee80211_sched_scan_stop,
2141         .auth = ieee80211_auth,
2142         .assoc = ieee80211_assoc,
2143         .deauth = ieee80211_deauth,
2144         .disassoc = ieee80211_disassoc,
2145         .join_ibss = ieee80211_join_ibss,
2146         .leave_ibss = ieee80211_leave_ibss,
2147         .set_wiphy_params = ieee80211_set_wiphy_params,
2148         .set_tx_power = ieee80211_set_tx_power,
2149         .get_tx_power = ieee80211_get_tx_power,
2150         .set_wds_peer = ieee80211_set_wds_peer,
2151         .rfkill_poll = ieee80211_rfkill_poll,
2152         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
2153         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
2154         .set_power_mgmt = ieee80211_set_power_mgmt,
2155         .set_bitrate_mask = ieee80211_set_bitrate_mask,
2156         .remain_on_channel = ieee80211_remain_on_channel,
2157         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
2158         .mgmt_tx = ieee80211_mgmt_tx,
2159         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
2160         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
2161         .mgmt_frame_register = ieee80211_mgmt_frame_register,
2162         .set_antenna = ieee80211_set_antenna,
2163         .get_antenna = ieee80211_get_antenna,
2164         .set_ringparam = ieee80211_set_ringparam,
2165         .get_ringparam = ieee80211_get_ringparam,
2166 };