net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  * Copyright (C) 2015-2017 Intel Deutschland GmbH
   7  * Copyright (C) 2018 Intel Corporation
   8  *
   9  * This file is GPLv2 as found in COPYING.
  10  */
  11
  12 #include <linux/ieee80211.h>
  13 #include <linux/nl80211.h>
  14 #include <linux/rtnetlink.h>
  15 #include <linux/slab.h>
  16 #include <net/net_namespace.h>
  17 #include <linux/rcupdate.h>
  18 #include <linux/if_ether.h>
  19 #include <net/cfg80211.h>
  20 #include "ieee80211_i.h"
  21 #include "driver-ops.h"
  22 #include "rate.h"
  23 #include "mesh.h"
  24 #include "wme.h"
  25
  26 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  27                                          struct vif_params *params)
  28 {
  29         bool mu_mimo_groups = false;
  30         bool mu_mimo_follow = false;
  31
  32         if (params->vht_mumimo_groups) {
  33                 u64 membership;
  34
  35                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  36
  37                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  38                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  39                 memcpy(sdata->vif.bss_conf.mu_group.position,
  40                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  41                        WLAN_USER_POSITION_LEN);
  42                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  43                 /* don't care about endianness - just check for 0 */
  44                 memcpy(&membership, params->vht_mumimo_groups,
  45                        WLAN_MEMBERSHIP_LEN);
  46                 mu_mimo_groups = membership != 0;
  47         }
  48
  49         if (params->vht_mumimo_follow_addr) {
  50                 mu_mimo_follow =
  51                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  52                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  53                                 params->vht_mumimo_follow_addr);
  54         }
  55
  56         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  57 }
  58
  59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  60                                      struct vif_params *params)
  61 {
  62         struct ieee80211_local *local = sdata->local;
  63         struct ieee80211_sub_if_data *monitor_sdata;
  64
  65         /* check flags first */
  66         if (params->flags && ieee80211_sdata_running(sdata)) {
  67                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  68
  69                 /*
  70                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  71                  * MONITOR_FLAG_ACTIVE to be changed while the
  72                  * interface is up.
  73                  * Else we would need to add a lot of cruft
  74                  * to update everything:
  75                  *      cooked_mntrs, monitor and all fif_* counters
  76                  *      reconfigure hardware
  77                  */
  78                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  79                         return -EBUSY;
  80         }
  81
  82         /* also validate MU-MIMO change */
  83         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  84
  85         if (!monitor_sdata &&
  86             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  87                 return -EOPNOTSUPP;
  88
  89         /* apply all changes now - no failures allowed */
  90
  91         if (monitor_sdata)
  92                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  93
  94         if (params->flags) {
  95                 if (ieee80211_sdata_running(sdata)) {
  96                         ieee80211_adjust_monitor_flags(sdata, -1);
  97                         sdata->u.mntr.flags = params->flags;
  98                         ieee80211_adjust_monitor_flags(sdata, 1);
  99
 100                         ieee80211_configure_filter(local);
 101                 } else {
 102                         /*
 103                          * Because the interface is down, ieee80211_do_stop
 104                          * and ieee80211_do_open take care of "everything"
 105                          * mentioned in the comment above.
 106                          */
 107                         sdata->u.mntr.flags = params->flags;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 115                                                 const char *name,
 116                                                 unsigned char name_assign_type,
 117                                                 enum nl80211_iftype type,
 118                                                 struct vif_params *params)
 119 {
 120         struct ieee80211_local *local = wiphy_priv(wiphy);
 121         struct wireless_dev *wdev;
 122         struct ieee80211_sub_if_data *sdata;
 123         int err;
 124
 125         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 126         if (err)
 127                 return ERR_PTR(err);
 128
 129         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 130
 131         if (type == NL80211_IFTYPE_MONITOR) {
 132                 err = ieee80211_set_mon_options(sdata, params);
 133                 if (err) {
 134                         ieee80211_if_remove(sdata);
 135                         return NULL;
 136                 }
 137         }
 138
 139         return wdev;
 140 }
 141
 142 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 143 {
 144         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 145
 146         return 0;
 147 }
 148
 149 static int ieee80211_change_iface(struct wiphy *wiphy,
 150                                   struct net_device *dev,
 151                                   enum nl80211_iftype type,
 152                                   struct vif_params *params)
 153 {
 154         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 155         int ret;
 156
 157         ret = ieee80211_if_change_type(sdata, type);
 158         if (ret)
 159                 return ret;
 160
 161         if (type == NL80211_IFTYPE_AP_VLAN &&
 162             params && params->use_4addr == 0) {
 163                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 164                 ieee80211_check_fast_rx_iface(sdata);
 165         } else if (type == NL80211_IFTYPE_STATION &&
 166                    params && params->use_4addr >= 0) {
 167                 sdata->u.mgd.use_4addr = params->use_4addr;
 168         }
 169
 170         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 171                 ret = ieee80211_set_mon_options(sdata, params);
 172                 if (ret)
 173                         return ret;
 174         }
 175
 176         return 0;
 177 }
 178
 179 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 180                                       struct wireless_dev *wdev)
 181 {
 182         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 183         int ret;
 184
 185         mutex_lock(&sdata->local->chanctx_mtx);
 186         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 187         mutex_unlock(&sdata->local->chanctx_mtx);
 188         if (ret < 0)
 189                 return ret;
 190
 191         return ieee80211_do_open(wdev, true);
 192 }
 193
 194 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 195                                       struct wireless_dev *wdev)
 196 {
 197         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 198 }
 199
 200 static int ieee80211_start_nan(struct wiphy *wiphy,
 201                                struct wireless_dev *wdev,
 202                                struct cfg80211_nan_conf *conf)
 203 {
 204         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 205         int ret;
 206
 207         mutex_lock(&sdata->local->chanctx_mtx);
 208         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 209         mutex_unlock(&sdata->local->chanctx_mtx);
 210         if (ret < 0)
 211                 return ret;
 212
 213         ret = ieee80211_do_open(wdev, true);
 214         if (ret)
 215                 return ret;
 216
 217         ret = drv_start_nan(sdata->local, sdata, conf);
 218         if (ret)
 219                 ieee80211_sdata_stop(sdata);
 220
 221         sdata->u.nan.conf = *conf;
 222
 223         return ret;
 224 }
 225
 226 static void ieee80211_stop_nan(struct wiphy *wiphy,
 227                                struct wireless_dev *wdev)
 228 {
 229         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 230
 231         drv_stop_nan(sdata->local, sdata);
 232         ieee80211_sdata_stop(sdata);
 233 }
 234
 235 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 236                                      struct wireless_dev *wdev,
 237                                      struct cfg80211_nan_conf *conf,
 238                                      u32 changes)
 239 {
 240         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 241         struct cfg80211_nan_conf new_conf;
 242         int ret = 0;
 243
 244         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 245                 return -EOPNOTSUPP;
 246
 247         if (!ieee80211_sdata_running(sdata))
 248                 return -ENETDOWN;
 249
 250         new_conf = sdata->u.nan.conf;
 251
 252         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 253                 new_conf.master_pref = conf->master_pref;
 254
 255         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 256                 new_conf.bands = conf->bands;
 257
 258         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 259         if (!ret)
 260                 sdata->u.nan.conf = new_conf;
 261
 262         return ret;
 263 }
 264
 265 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 266                                   struct wireless_dev *wdev,
 267                                   struct cfg80211_nan_func *nan_func)
 268 {
 269         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 270         int ret;
 271
 272         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 273                 return -EOPNOTSUPP;
 274
 275         if (!ieee80211_sdata_running(sdata))
 276                 return -ENETDOWN;
 277
 278         spin_lock_bh(&sdata->u.nan.func_lock);
 279
 280         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 281                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 282                         GFP_ATOMIC);
 283         spin_unlock_bh(&sdata->u.nan.func_lock);
 284
 285         if (ret < 0)
 286                 return ret;
 287
 288         nan_func->instance_id = ret;
 289
 290         WARN_ON(nan_func->instance_id == 0);
 291
 292         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 293         if (ret) {
 294                 spin_lock_bh(&sdata->u.nan.func_lock);
 295                 idr_remove(&sdata->u.nan.function_inst_ids,
 296                            nan_func->instance_id);
 297                 spin_unlock_bh(&sdata->u.nan.func_lock);
 298         }
 299
 300         return ret;
 301 }
 302
 303 static struct cfg80211_nan_func *
 304 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 305                                   u64 cookie)
 306 {
 307         struct cfg80211_nan_func *func;
 308         int id;
 309
 310         lockdep_assert_held(&sdata->u.nan.func_lock);
 311
 312         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 313                 if (func->cookie == cookie)
 314                         return func;
 315         }
 316
 317         return NULL;
 318 }
 319
 320 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 321                                   struct wireless_dev *wdev, u64 cookie)
 322 {
 323         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 324         struct cfg80211_nan_func *func;
 325         u8 instance_id = 0;
 326
 327         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 328             !ieee80211_sdata_running(sdata))
 329                 return;
 330
 331         spin_lock_bh(&sdata->u.nan.func_lock);
 332
 333         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 334         if (func)
 335                 instance_id = func->instance_id;
 336
 337         spin_unlock_bh(&sdata->u.nan.func_lock);
 338
 339         if (instance_id)
 340                 drv_del_nan_func(sdata->local, sdata, instance_id);
 341 }
 342
 343 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 344                                   struct net_device *dev,
 345                                   u16 noack_map)
 346 {
 347         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 348
 349         sdata->noack_map = noack_map;
 350
 351         ieee80211_check_fast_xmit_iface(sdata);
 352
 353         return 0;
 354 }
 355
 356 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 357                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 358                              struct key_params *params)
 359 {
 360         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 361         struct ieee80211_local *local = sdata->local;
 362         struct sta_info *sta = NULL;
 363         const struct ieee80211_cipher_scheme *cs = NULL;
 364         struct ieee80211_key *key;
 365         int err;
 366
 367         if (!ieee80211_sdata_running(sdata))
 368                 return -ENETDOWN;
 369
 370         /* reject WEP and TKIP keys if WEP failed to initialize */
 371         switch (params->cipher) {
 372         case WLAN_CIPHER_SUITE_WEP40:
 373         case WLAN_CIPHER_SUITE_TKIP:
 374         case WLAN_CIPHER_SUITE_WEP104:
 375                 if (IS_ERR(local->wep_tx_tfm))
 376                         return -EINVAL;
 377                 break;
 378         case WLAN_CIPHER_SUITE_CCMP:
 379         case WLAN_CIPHER_SUITE_CCMP_256:
 380         case WLAN_CIPHER_SUITE_AES_CMAC:
 381         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 383         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 384         case WLAN_CIPHER_SUITE_GCMP:
 385         case WLAN_CIPHER_SUITE_GCMP_256:
 386                 break;
 387         default:
 388                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 389                 break;
 390         }
 391
 392         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 393                                   params->key, params->seq_len, params->seq,
 394                                   cs);
 395         if (IS_ERR(key))
 396                 return PTR_ERR(key);
 397
 398         if (pairwise)
 399                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 400
 401         mutex_lock(&local->sta_mtx);
 402
 403         if (mac_addr) {
 404                 sta = sta_info_get_bss(sdata, mac_addr);
 405                 /*
 406                  * The ASSOC test makes sure the driver is ready to
 407                  * receive the key. When wpa_supplicant has roamed
 408                  * using FT, it attempts to set the key before
 409                  * association has completed, this rejects that attempt
 410                  * so it will set the key again after association.
 411                  *
 412                  * TODO: accept the key if we have a station entry and
 413                  *       add it to the device after the station.
 414                  */
 415                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 416                         ieee80211_key_free_unused(key);
 417                         err = -ENOENT;
 418                         goto out_unlock;
 419                 }
 420         }
 421
 422         switch (sdata->vif.type) {
 423         case NL80211_IFTYPE_STATION:
 424                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 425                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 426                 break;
 427         case NL80211_IFTYPE_AP:
 428         case NL80211_IFTYPE_AP_VLAN:
 429                 /* Keys without a station are used for TX only */
 430                 if (sta && test_sta_flag(sta, WLAN_STA_MFP))
 431                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 432                 break;
 433         case NL80211_IFTYPE_ADHOC:
 434                 /* no MFP (yet) */
 435                 break;
 436         case NL80211_IFTYPE_MESH_POINT:
 437 #ifdef CONFIG_MAC80211_MESH
 438                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 439                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 440                 break;
 441 #endif
 442         case NL80211_IFTYPE_WDS:
 443         case NL80211_IFTYPE_MONITOR:
 444         case NL80211_IFTYPE_P2P_DEVICE:
 445         case NL80211_IFTYPE_NAN:
 446         case NL80211_IFTYPE_UNSPECIFIED:
 447         case NUM_NL80211_IFTYPES:
 448         case NL80211_IFTYPE_P2P_CLIENT:
 449         case NL80211_IFTYPE_P2P_GO:
 450         case NL80211_IFTYPE_OCB:
 451                 /* shouldn't happen */
 452                 WARN_ON_ONCE(1);
 453                 break;
 454         }
 455
 456         if (sta)
 457                 sta->cipher_scheme = cs;
 458
 459         err = ieee80211_key_link(key, sdata, sta);
 460
 461  out_unlock:
 462         mutex_unlock(&local->sta_mtx);
 463
 464         return err;
 465 }
 466
 467 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 468                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 469 {
 470         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 471         struct ieee80211_local *local = sdata->local;
 472         struct sta_info *sta;
 473         struct ieee80211_key *key = NULL;
 474         int ret;
 475
 476         mutex_lock(&local->sta_mtx);
 477         mutex_lock(&local->key_mtx);
 478
 479         if (mac_addr) {
 480                 ret = -ENOENT;
 481
 482                 sta = sta_info_get_bss(sdata, mac_addr);
 483                 if (!sta)
 484                         goto out_unlock;
 485
 486                 if (pairwise)
 487                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 488                 else
 489                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 490         } else
 491                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 492
 493         if (!key) {
 494                 ret = -ENOENT;
 495                 goto out_unlock;
 496         }
 497
 498         ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION);
 499
 500         ret = 0;
 501  out_unlock:
 502         mutex_unlock(&local->key_mtx);
 503         mutex_unlock(&local->sta_mtx);
 504
 505         return ret;
 506 }
 507
 508 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 509                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 510                              void *cookie,
 511                              void (*callback)(void *cookie,
 512                                               struct key_params *params))
 513 {
 514         struct ieee80211_sub_if_data *sdata;
 515         struct sta_info *sta = NULL;
 516         u8 seq[6] = {0};
 517         struct key_params params;
 518         struct ieee80211_key *key = NULL;
 519         u64 pn64;
 520         u32 iv32;
 521         u16 iv16;
 522         int err = -ENOENT;
 523         struct ieee80211_key_seq kseq = {};
 524
 525         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 526
 527         rcu_read_lock();
 528
 529         if (mac_addr) {
 530                 sta = sta_info_get_bss(sdata, mac_addr);
 531                 if (!sta)
 532                         goto out;
 533
 534                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 535                         key = rcu_dereference(sta->ptk[key_idx]);
 536                 else if (!pairwise &&
 537                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 538                         key = rcu_dereference(sta->gtk[key_idx]);
 539         } else
 540                 key = rcu_dereference(sdata->keys[key_idx]);
 541
 542         if (!key)
 543                 goto out;
 544
 545         memset(&params, 0, sizeof(params));
 546
 547         params.cipher = key->conf.cipher;
 548
 549         switch (key->conf.cipher) {
 550         case WLAN_CIPHER_SUITE_TKIP:
 551                 pn64 = atomic64_read(&key->conf.tx_pn);
 552                 iv32 = TKIP_PN_TO_IV32(pn64);
 553                 iv16 = TKIP_PN_TO_IV16(pn64);
 554
 555                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 556                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 557                         drv_get_key_seq(sdata->local, key, &kseq);
 558                         iv32 = kseq.tkip.iv32;
 559                         iv16 = kseq.tkip.iv16;
 560                 }
 561
 562                 seq[0] = iv16 & 0xff;
 563                 seq[1] = (iv16 >> 8) & 0xff;
 564                 seq[2] = iv32 & 0xff;
 565                 seq[3] = (iv32 >> 8) & 0xff;
 566                 seq[4] = (iv32 >> 16) & 0xff;
 567                 seq[5] = (iv32 >> 24) & 0xff;
 568                 params.seq = seq;
 569                 params.seq_len = 6;
 570                 break;
 571         case WLAN_CIPHER_SUITE_CCMP:
 572         case WLAN_CIPHER_SUITE_CCMP_256:
 573         case WLAN_CIPHER_SUITE_AES_CMAC:
 574         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 575                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 576                              offsetof(typeof(kseq), aes_cmac));
 577                 /* fall through */
 578         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 579         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 580                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 581                              offsetof(typeof(kseq), aes_gmac));
 582                 /* fall through */
 583         case WLAN_CIPHER_SUITE_GCMP:
 584         case WLAN_CIPHER_SUITE_GCMP_256:
 585                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 586                              offsetof(typeof(kseq), gcmp));
 587
 588                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 589                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 590                         drv_get_key_seq(sdata->local, key, &kseq);
 591                         memcpy(seq, kseq.ccmp.pn, 6);
 592                 } else {
 593                         pn64 = atomic64_read(&key->conf.tx_pn);
 594                         seq[0] = pn64;
 595                         seq[1] = pn64 >> 8;
 596                         seq[2] = pn64 >> 16;
 597                         seq[3] = pn64 >> 24;
 598                         seq[4] = pn64 >> 32;
 599                         seq[5] = pn64 >> 40;
 600                 }
 601                 params.seq = seq;
 602                 params.seq_len = 6;
 603                 break;
 604         default:
 605                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 606                         break;
 607                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 608                         break;
 609                 drv_get_key_seq(sdata->local, key, &kseq);
 610                 params.seq = kseq.hw.seq;
 611                 params.seq_len = kseq.hw.seq_len;
 612                 break;
 613         }
 614
 615         params.key = key->conf.key;
 616         params.key_len = key->conf.keylen;
 617
 618         callback(cookie, &params);
 619         err = 0;
 620
 621  out:
 622         rcu_read_unlock();
 623         return err;
 624 }
 625
 626 static int ieee80211_config_default_key(struct wiphy *wiphy,
 627                                         struct net_device *dev,
 628                                         u8 key_idx, bool uni,
 629                                         bool multi)
 630 {
 631         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 632
 633         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 634
 635         return 0;
 636 }
 637
 638 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 639                                              struct net_device *dev,
 640                                              u8 key_idx)
 641 {
 642         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 643
 644         ieee80211_set_default_mgmt_key(sdata, key_idx);
 645
 646         return 0;
 647 }
 648
 649 void sta_set_rate_info_tx(struct sta_info *sta,
 650                           const struct ieee80211_tx_rate *rate,
 651                           struct rate_info *rinfo)
 652 {
 653         rinfo->flags = 0;
 654         if (rate->flags & IEEE80211_TX_RC_MCS) {
 655                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 656                 rinfo->mcs = rate->idx;
 657         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 658                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 659                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 660                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 661         } else {
 662                 struct ieee80211_supported_band *sband;
 663                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 664                 u16 brate;
 665
 666                 sband = ieee80211_get_sband(sta->sdata);
 667                 WARN_ON_ONCE(sband && !sband->bitrates);
 668                 if (sband && sband->bitrates) {
 669                         brate = sband->bitrates[rate->idx].bitrate;
 670                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 671                 }
 672         }
 673         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 674                 rinfo->bw = RATE_INFO_BW_40;
 675         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 676                 rinfo->bw = RATE_INFO_BW_80;
 677         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 678                 rinfo->bw = RATE_INFO_BW_160;
 679         else
 680                 rinfo->bw = RATE_INFO_BW_20;
 681         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 682                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 683 }
 684
 685 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 686                                   int idx, u8 *mac, struct station_info *sinfo)
 687 {
 688         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 689         struct ieee80211_local *local = sdata->local;
 690         struct sta_info *sta;
 691         int ret = -ENOENT;
 692
 693         mutex_lock(&local->sta_mtx);
 694
 695         sta = sta_info_get_by_idx(sdata, idx);
 696         if (sta) {
 697                 ret = 0;
 698                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 699                 sta_set_sinfo(sta, sinfo, true);
 700         }
 701
 702         mutex_unlock(&local->sta_mtx);
 703
 704         return ret;
 705 }
 706
 707 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 708                                  int idx, struct survey_info *survey)
 709 {
 710         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 711
 712         return drv_get_survey(local, idx, survey);
 713 }
 714
 715 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 716                                  const u8 *mac, struct station_info *sinfo)
 717 {
 718         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 719         struct ieee80211_local *local = sdata->local;
 720         struct sta_info *sta;
 721         int ret = -ENOENT;
 722
 723         mutex_lock(&local->sta_mtx);
 724
 725         sta = sta_info_get_bss(sdata, mac);
 726         if (sta) {
 727                 ret = 0;
 728                 sta_set_sinfo(sta, sinfo, true);
 729         }
 730
 731         mutex_unlock(&local->sta_mtx);
 732
 733         return ret;
 734 }
 735
 736 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 737                                          struct cfg80211_chan_def *chandef)
 738 {
 739         struct ieee80211_local *local = wiphy_priv(wiphy);
 740         struct ieee80211_sub_if_data *sdata;
 741         int ret = 0;
 742
 743         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 744                 return 0;
 745
 746         mutex_lock(&local->mtx);
 747         if (local->use_chanctx) {
 748                 sdata = rtnl_dereference(local->monitor_sdata);
 749                 if (sdata) {
 750                         ieee80211_vif_release_channel(sdata);
 751                         ret = ieee80211_vif_use_channel(sdata, chandef,
 752                                         IEEE80211_CHANCTX_EXCLUSIVE);
 753                 }
 754         } else if (local->open_count == local->monitors) {
 755                 local->_oper_chandef = *chandef;
 756                 ieee80211_hw_config(local, 0);
 757         }
 758
 759         if (ret == 0)
 760                 local->monitor_chandef = *chandef;
 761         mutex_unlock(&local->mtx);
 762
 763         return ret;
 764 }
 765
 766 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 767                                     const u8 *resp, size_t resp_len,
 768                                     const struct ieee80211_csa_settings *csa)
 769 {
 770         struct probe_resp *new, *old;
 771
 772         if (!resp || !resp_len)
 773                 return 1;
 774
 775         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 776
 777         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 778         if (!new)
 779                 return -ENOMEM;
 780
 781         new->len = resp_len;
 782         memcpy(new->data, resp, resp_len);
 783
 784         if (csa)
 785                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 786                        csa->n_counter_offsets_presp *
 787                        sizeof(new->csa_counter_offsets[0]));
 788
 789         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 790         if (old)
 791                 kfree_rcu(old, rcu_head);
 792
 793         return 0;
 794 }
 795
 796 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 797                                    struct cfg80211_beacon_data *params,
 798                                    const struct ieee80211_csa_settings *csa)
 799 {
 800         struct beacon_data *new, *old;
 801         int new_head_len, new_tail_len;
 802         int size, err;
 803         u32 changed = BSS_CHANGED_BEACON;
 804
 805         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 806
 807
 808         /* Need to have a beacon head if we don't have one yet */
 809         if (!params->head && !old)
 810                 return -EINVAL;
 811
 812         /* new or old head? */
 813         if (params->head)
 814                 new_head_len = params->head_len;
 815         else
 816                 new_head_len = old->head_len;
 817
 818         /* new or old tail? */
 819         if (params->tail || !old)
 820                 /* params->tail_len will be zero for !params->tail */
 821                 new_tail_len = params->tail_len;
 822         else
 823                 new_tail_len = old->tail_len;
 824
 825         size = sizeof(*new) + new_head_len + new_tail_len;
 826
 827         new = kzalloc(size, GFP_KERNEL);
 828         if (!new)
 829                 return -ENOMEM;
 830
 831         /* start filling the new info now */
 832
 833         /*
 834          * pointers go into the block we allocated,
 835          * memory is | beacon_data | head | tail |
 836          */
 837         new->head = ((u8 *) new) + sizeof(*new);
 838         new->tail = new->head + new_head_len;
 839         new->head_len = new_head_len;
 840         new->tail_len = new_tail_len;
 841
 842         if (csa) {
 843                 new->csa_current_counter = csa->count;
 844                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 845                        csa->n_counter_offsets_beacon *
 846                        sizeof(new->csa_counter_offsets[0]));
 847         }
 848
 849         /* copy in head */
 850         if (params->head)
 851                 memcpy(new->head, params->head, new_head_len);
 852         else
 853                 memcpy(new->head, old->head, new_head_len);
 854
 855         /* copy in optional tail */
 856         if (params->tail)
 857                 memcpy(new->tail, params->tail, new_tail_len);
 858         else
 859                 if (old)
 860                         memcpy(new->tail, old->tail, new_tail_len);
 861
 862         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 863                                        params->probe_resp_len, csa);
 864         if (err < 0)
 865                 return err;
 866         if (err == 0)
 867                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 868
 869         rcu_assign_pointer(sdata->u.ap.beacon, new);
 870
 871         if (old)
 872                 kfree_rcu(old, rcu_head);
 873
 874         return changed;
 875 }
 876
 877 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 878                               struct cfg80211_ap_settings *params)
 879 {
 880         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 881         struct ieee80211_local *local = sdata->local;
 882         struct beacon_data *old;
 883         struct ieee80211_sub_if_data *vlan;
 884         u32 changed = BSS_CHANGED_BEACON_INT |
 885                       BSS_CHANGED_BEACON_ENABLED |
 886                       BSS_CHANGED_BEACON |
 887                       BSS_CHANGED_SSID |
 888                       BSS_CHANGED_P2P_PS |
 889                       BSS_CHANGED_TXPOWER;
 890         int err;
 891         int prev_beacon_int;
 892
 893         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 894         if (old)
 895                 return -EALREADY;
 896
 897         switch (params->smps_mode) {
 898         case NL80211_SMPS_OFF:
 899                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 900                 break;
 901         case NL80211_SMPS_STATIC:
 902                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 903                 break;
 904         case NL80211_SMPS_DYNAMIC:
 905                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 906                 break;
 907         default:
 908                 return -EINVAL;
 909         }
 910         sdata->u.ap.req_smps = sdata->smps_mode;
 911
 912         sdata->needed_rx_chains = sdata->local->rx_chains;
 913
 914         prev_beacon_int = sdata->vif.bss_conf.beacon_int;
 915         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 916
 917         mutex_lock(&local->mtx);
 918         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 919                                         IEEE80211_CHANCTX_SHARED);
 920         if (!err)
 921                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 922         mutex_unlock(&local->mtx);
 923         if (err) {
 924                 sdata->vif.bss_conf.beacon_int = prev_beacon_int;
 925                 return err;
 926         }
 927
 928         /*
 929          * Apply control port protocol, this allows us to
 930          * not encrypt dynamic WEP control frames.
 931          */
 932         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 933         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 934         sdata->control_port_over_nl80211 =
 935                                 params->crypto.control_port_over_nl80211;
 936         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 937                                                         &params->crypto,
 938                                                         sdata->vif.type);
 939
 940         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 941                 vlan->control_port_protocol =
 942                         params->crypto.control_port_ethertype;
 943                 vlan->control_port_no_encrypt =
 944                         params->crypto.control_port_no_encrypt;
 945                 vlan->control_port_over_nl80211 =
 946                         params->crypto.control_port_over_nl80211;
 947                 vlan->encrypt_headroom =
 948                         ieee80211_cs_headroom(sdata->local,
 949                                               &params->crypto,
 950                                               vlan->vif.type);
 951         }
 952
 953         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 954         sdata->vif.bss_conf.enable_beacon = true;
 955         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 956
 957         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 958         if (params->ssid_len)
 959                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 960                        params->ssid_len);
 961         sdata->vif.bss_conf.hidden_ssid =
 962                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 963
 964         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 965                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 966         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 967                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 968         if (params->p2p_opp_ps)
 969                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 970                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 971
 972         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 973         if (err < 0) {
 974                 ieee80211_vif_release_channel(sdata);
 975                 return err;
 976         }
 977         changed |= err;
 978
 979         err = drv_start_ap(sdata->local, sdata);
 980         if (err) {
 981                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 982
 983                 if (old)
 984                         kfree_rcu(old, rcu_head);
 985                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 986                 ieee80211_vif_release_channel(sdata);
 987                 return err;
 988         }
 989
 990         ieee80211_recalc_dtim(local, sdata);
 991         ieee80211_bss_info_change_notify(sdata, changed);
 992
 993         netif_carrier_on(dev);
 994         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 995                 netif_carrier_on(vlan->dev);
 996
 997         return 0;
 998 }
 999
1000 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
1001                                    struct cfg80211_beacon_data *params)
1002 {
1003         struct ieee80211_sub_if_data *sdata;
1004         struct beacon_data *old;
1005         int err;
1006
1007         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1008         sdata_assert_lock(sdata);
1009
1010         /* don't allow changing the beacon while CSA is in place - offset
1011          * of channel switch counter may change
1012          */
1013         if (sdata->vif.csa_active)
1014                 return -EBUSY;
1015
1016         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1017         if (!old)
1018                 return -ENOENT;
1019
1020         err = ieee80211_assign_beacon(sdata, params, NULL);
1021         if (err < 0)
1022                 return err;
1023         ieee80211_bss_info_change_notify(sdata, err);
1024         return 0;
1025 }
1026
1027 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1028 {
1029         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1030         struct ieee80211_sub_if_data *vlan;
1031         struct ieee80211_local *local = sdata->local;
1032         struct beacon_data *old_beacon;
1033         struct probe_resp *old_probe_resp;
1034         struct cfg80211_chan_def chandef;
1035
1036         sdata_assert_lock(sdata);
1037
1038         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1039         if (!old_beacon)
1040                 return -ENOENT;
1041         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1042
1043         /* abort any running channel switch */
1044         mutex_lock(&local->mtx);
1045         sdata->vif.csa_active = false;
1046         if (sdata->csa_block_tx) {
1047                 ieee80211_wake_vif_queues(local, sdata,
1048                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1049                 sdata->csa_block_tx = false;
1050         }
1051
1052         mutex_unlock(&local->mtx);
1053
1054         kfree(sdata->u.ap.next_beacon);
1055         sdata->u.ap.next_beacon = NULL;
1056
1057         /* turn off carrier for this interface and dependent VLANs */
1058         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1059                 netif_carrier_off(vlan->dev);
1060         netif_carrier_off(dev);
1061
1062         /* remove beacon and probe response */
1063         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1064         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1065         kfree_rcu(old_beacon, rcu_head);
1066         if (old_probe_resp)
1067                 kfree_rcu(old_probe_resp, rcu_head);
1068         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1069
1070         __sta_info_flush(sdata, true);
1071         ieee80211_free_keys(sdata, true);
1072
1073         sdata->vif.bss_conf.enable_beacon = false;
1074         sdata->vif.bss_conf.ssid_len = 0;
1075         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1076         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1077
1078         if (sdata->wdev.cac_started) {
1079                 chandef = sdata->vif.bss_conf.chandef;
1080                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1081                 cfg80211_cac_event(sdata->dev, &chandef,
1082                                    NL80211_RADAR_CAC_ABORTED,
1083                                    GFP_KERNEL);
1084         }
1085
1086         drv_stop_ap(sdata->local, sdata);
1087
1088         /* free all potentially still buffered bcast frames */
1089         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1090         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1091
1092         mutex_lock(&local->mtx);
1093         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1094         ieee80211_vif_release_channel(sdata);
1095         mutex_unlock(&local->mtx);
1096
1097         return 0;
1098 }
1099
1100 static int sta_apply_auth_flags(struct ieee80211_local *local,
1101                                 struct sta_info *sta,
1102                                 u32 mask, u32 set)
1103 {
1104         int ret;
1105
1106         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1107             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1108             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1109                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1110                 if (ret)
1111                         return ret;
1112         }
1113
1114         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1115             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1116             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1117                 /*
1118                  * When peer becomes associated, init rate control as
1119                  * well. Some drivers require rate control initialized
1120                  * before drv_sta_state() is called.
1121                  */
1122                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1123                         rate_control_rate_init(sta);
1124
1125                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1126                 if (ret)
1127                         return ret;
1128         }
1129
1130         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1131                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1132                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1133                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1134                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1135                 else
1136                         ret = 0;
1137                 if (ret)
1138                         return ret;
1139         }
1140
1141         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1142             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1143             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1144                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1145                 if (ret)
1146                         return ret;
1147         }
1148
1149         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1150             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1151             test_sta_flag(sta, WLAN_STA_AUTH)) {
1152                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1153                 if (ret)
1154                         return ret;
1155         }
1156
1157         return 0;
1158 }
1159
1160 static void sta_apply_mesh_params(struct ieee80211_local *local,
1161                                   struct sta_info *sta,
1162                                   struct station_parameters *params)
1163 {
1164 #ifdef CONFIG_MAC80211_MESH
1165         struct ieee80211_sub_if_data *sdata = sta->sdata;
1166         u32 changed = 0;
1167
1168         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1169                 switch (params->plink_state) {
1170                 case NL80211_PLINK_ESTAB:
1171                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1172                                 changed = mesh_plink_inc_estab_count(sdata);
1173                         sta->mesh->plink_state = params->plink_state;
1174                         sta->mesh->aid = params->peer_aid;
1175
1176                         ieee80211_mps_sta_status_update(sta);
1177                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1178                                       sdata->u.mesh.mshcfg.power_mode);
1179                         break;
1180                 case NL80211_PLINK_LISTEN:
1181                 case NL80211_PLINK_BLOCKED:
1182                 case NL80211_PLINK_OPN_SNT:
1183                 case NL80211_PLINK_OPN_RCVD:
1184                 case NL80211_PLINK_CNF_RCVD:
1185                 case NL80211_PLINK_HOLDING:
1186                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1187                                 changed = mesh_plink_dec_estab_count(sdata);
1188                         sta->mesh->plink_state = params->plink_state;
1189
1190                         ieee80211_mps_sta_status_update(sta);
1191                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1192                                         NL80211_MESH_POWER_UNKNOWN);
1193                         break;
1194                 default:
1195                         /*  nothing  */
1196                         break;
1197                 }
1198         }
1199
1200         switch (params->plink_action) {
1201         case NL80211_PLINK_ACTION_NO_ACTION:
1202                 /* nothing */
1203                 break;
1204         case NL80211_PLINK_ACTION_OPEN:
1205                 changed |= mesh_plink_open(sta);
1206                 break;
1207         case NL80211_PLINK_ACTION_BLOCK:
1208                 changed |= mesh_plink_block(sta);
1209                 break;
1210         }
1211
1212         if (params->local_pm)
1213                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1214                                                           params->local_pm);
1215
1216         ieee80211_mbss_info_change_notify(sdata, changed);
1217 #endif
1218 }
1219
1220 static int sta_apply_parameters(struct ieee80211_local *local,
1221                                 struct sta_info *sta,
1222                                 struct station_parameters *params)
1223 {
1224         int ret = 0;
1225         struct ieee80211_supported_band *sband;
1226         struct ieee80211_sub_if_data *sdata = sta->sdata;
1227         u32 mask, set;
1228
1229         sband = ieee80211_get_sband(sdata);
1230         if (!sband)
1231                 return -EINVAL;
1232
1233         mask = params->sta_flags_mask;
1234         set = params->sta_flags_set;
1235
1236         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1237                 /*
1238                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1239                  * API but must follow AUTHENTICATED for driver state.
1240                  */
1241                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1242                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1243                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1244                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1245         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1246                 /*
1247                  * TDLS -- everything follows authorized, but
1248                  * only becoming authorized is possible, not
1249                  * going back
1250                  */
1251                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1252                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1253                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1254                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1255                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1256                 }
1257         }
1258
1259         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1260             local->hw.queues >= IEEE80211_NUM_ACS)
1261                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1262
1263         /* auth flags will be set later for TDLS,
1264          * and for unassociated stations that move to assocaited */
1265         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1266             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1267               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1268                 ret = sta_apply_auth_flags(local, sta, mask, set);
1269                 if (ret)
1270                         return ret;
1271         }
1272
1273         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1274                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1275                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1276                 else
1277                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1278         }
1279
1280         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1281                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1282                 if (set & BIT(NL80211_STA_FLAG_MFP))
1283                         set_sta_flag(sta, WLAN_STA_MFP);
1284                 else
1285                         clear_sta_flag(sta, WLAN_STA_MFP);
1286         }
1287
1288         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1289                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1290                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1291                 else
1292                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1293         }
1294
1295         /* mark TDLS channel switch support, if the AP allows it */
1296         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1297             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1298             params->ext_capab_len >= 4 &&
1299             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1300                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1301
1302         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1303             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1304             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1305             params->ext_capab_len >= 8 &&
1306             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1307                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1308
1309         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1310                 sta->sta.uapsd_queues = params->uapsd_queues;
1311                 sta->sta.max_sp = params->max_sp;
1312         }
1313
1314         /* The sender might not have sent the last bit, consider it to be 0 */
1315         if (params->ext_capab_len >= 8) {
1316                 u8 val = (params->ext_capab[7] &
1317                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1318
1319                 /* we did get all the bits, take the MSB as well */
1320                 if (params->ext_capab_len >= 9) {
1321                         u8 val_msb = params->ext_capab[8] &
1322                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1323                         val_msb <<= 1;
1324                         val |= val_msb;
1325                 }
1326
1327                 switch (val) {
1328                 case 1:
1329                         sta->sta.max_amsdu_subframes = 32;
1330                         break;
1331                 case 2:
1332                         sta->sta.max_amsdu_subframes = 16;
1333                         break;
1334                 case 3:
1335                         sta->sta.max_amsdu_subframes = 8;
1336                         break;
1337                 default:
1338                         sta->sta.max_amsdu_subframes = 0;
1339                 }
1340         }
1341
1342         /*
1343          * cfg80211 validates this (1-2007) and allows setting the AID
1344          * only when creating a new station entry
1345          */
1346         if (params->aid)
1347                 sta->sta.aid = params->aid;
1348
1349         /*
1350          * Some of the following updates would be racy if called on an
1351          * existing station, via ieee80211_change_station(). However,
1352          * all such changes are rejected by cfg80211 except for updates
1353          * changing the supported rates on an existing but not yet used
1354          * TDLS peer.
1355          */
1356
1357         if (params->listen_interval >= 0)
1358                 sta->listen_interval = params->listen_interval;
1359
1360         if (params->supported_rates) {
1361                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1362                                          sband, params->supported_rates,
1363                                          params->supported_rates_len,
1364                                          &sta->sta.supp_rates[sband->band]);
1365         }
1366
1367         if (params->ht_capa)
1368                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1369                                                   params->ht_capa, sta);
1370
1371         /* VHT can override some HT caps such as the A-MSDU max length */
1372         if (params->vht_capa)
1373                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1374                                                     params->vht_capa, sta);
1375
1376         if (params->he_capa)
1377                 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband,
1378                                                   (void *)params->he_capa,
1379                                                   params->he_capa_len, sta);
1380
1381         if (params->opmode_notif_used) {
1382                 /* returned value is only needed for rc update, but the
1383                  * rc isn't initialized here yet, so ignore it
1384                  */
1385                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1386                                               sband->band);
1387         }
1388
1389         if (params->support_p2p_ps >= 0)
1390                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1391
1392         if (ieee80211_vif_is_mesh(&sdata->vif))
1393                 sta_apply_mesh_params(local, sta, params);
1394
1395         /* set the STA state after all sta info from usermode has been set */
1396         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1397             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1398                 ret = sta_apply_auth_flags(local, sta, mask, set);
1399                 if (ret)
1400                         return ret;
1401         }
1402
1403         return 0;
1404 }
1405
1406 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1407                                  const u8 *mac,
1408                                  struct station_parameters *params)
1409 {
1410         struct ieee80211_local *local = wiphy_priv(wiphy);
1411         struct sta_info *sta;
1412         struct ieee80211_sub_if_data *sdata;
1413         int err;
1414
1415         if (params->vlan) {
1416                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1417
1418                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1419                     sdata->vif.type != NL80211_IFTYPE_AP)
1420                         return -EINVAL;
1421         } else
1422                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1423
1424         if (ether_addr_equal(mac, sdata->vif.addr))
1425                 return -EINVAL;
1426
1427         if (is_multicast_ether_addr(mac))
1428                 return -EINVAL;
1429
1430         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) &&
1431             sdata->vif.type == NL80211_IFTYPE_STATION &&
1432             !sdata->u.mgd.associated)
1433                 return -EINVAL;
1434
1435         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1436         if (!sta)
1437                 return -ENOMEM;
1438
1439         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1440                 sta->sta.tdls = true;
1441
1442         err = sta_apply_parameters(local, sta, params);
1443         if (err) {
1444                 sta_info_free(local, sta);
1445                 return err;
1446         }
1447
1448         /*
1449          * for TDLS and for unassociated station, rate control should be
1450          * initialized only when rates are known and station is marked
1451          * authorized/associated
1452          */
1453         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1454             test_sta_flag(sta, WLAN_STA_ASSOC))
1455                 rate_control_rate_init(sta);
1456
1457         err = sta_info_insert_rcu(sta);
1458         if (err) {
1459                 rcu_read_unlock();
1460                 return err;
1461         }
1462
1463         rcu_read_unlock();
1464
1465         return 0;
1466 }
1467
1468 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1469                                  struct station_del_parameters *params)
1470 {
1471         struct ieee80211_sub_if_data *sdata;
1472
1473         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1474
1475         if (params->mac)
1476                 return sta_info_destroy_addr_bss(sdata, params->mac);
1477
1478         sta_info_flush(sdata);
1479         return 0;
1480 }
1481
1482 static int ieee80211_change_station(struct wiphy *wiphy,
1483                                     struct net_device *dev, const u8 *mac,
1484                                     struct station_parameters *params)
1485 {
1486         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1487         struct ieee80211_local *local = wiphy_priv(wiphy);
1488         struct sta_info *sta;
1489         struct ieee80211_sub_if_data *vlansdata;
1490         enum cfg80211_station_type statype;
1491         int err;
1492
1493         mutex_lock(&local->sta_mtx);
1494
1495         sta = sta_info_get_bss(sdata, mac);
1496         if (!sta) {
1497                 err = -ENOENT;
1498                 goto out_err;
1499         }
1500
1501         switch (sdata->vif.type) {
1502         case NL80211_IFTYPE_MESH_POINT:
1503                 if (sdata->u.mesh.user_mpm)
1504                         statype = CFG80211_STA_MESH_PEER_USER;
1505                 else
1506                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1507                 break;
1508         case NL80211_IFTYPE_ADHOC:
1509                 statype = CFG80211_STA_IBSS;
1510                 break;
1511         case NL80211_IFTYPE_STATION:
1512                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1513                         statype = CFG80211_STA_AP_STA;
1514                         break;
1515                 }
1516                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1517                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1518                 else
1519                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1520                 break;
1521         case NL80211_IFTYPE_AP:
1522         case NL80211_IFTYPE_AP_VLAN:
1523                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1524                         statype = CFG80211_STA_AP_CLIENT;
1525                 else
1526                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1527                 break;
1528         default:
1529                 err = -EOPNOTSUPP;
1530                 goto out_err;
1531         }
1532
1533         err = cfg80211_check_station_change(wiphy, params, statype);
1534         if (err)
1535                 goto out_err;
1536
1537         if (params->vlan && params->vlan != sta->sdata->dev) {
1538                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1539
1540                 if (params->vlan->ieee80211_ptr->use_4addr) {
1541                         if (vlansdata->u.vlan.sta) {
1542                                 err = -EBUSY;
1543                                 goto out_err;
1544                         }
1545
1546                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1547                         __ieee80211_check_fast_rx_iface(vlansdata);
1548                 }
1549
1550                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1551                     sta->sdata->u.vlan.sta)
1552                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1553
1554                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1555                         ieee80211_vif_dec_num_mcast(sta->sdata);
1556
1557                 sta->sdata = vlansdata;
1558                 ieee80211_check_fast_rx(sta);
1559                 ieee80211_check_fast_xmit(sta);
1560
1561                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) {
1562                         ieee80211_vif_inc_num_mcast(sta->sdata);
1563                         cfg80211_send_layer2_update(sta->sdata->dev,
1564                                                     sta->sta.addr);
1565                 }
1566         }
1567
1568         err = sta_apply_parameters(local, sta, params);
1569         if (err)
1570                 goto out_err;
1571
1572         mutex_unlock(&local->sta_mtx);
1573
1574         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1575              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1576             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1577             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1578             sta_info_tx_streams(sta) != 1) {
1579                 ht_dbg(sta->sdata,
1580                        "%pM just authorized and MIMO capable - update SMPS\n",
1581                        sta->sta.addr);
1582                 ieee80211_send_smps_action(sta->sdata,
1583                         sta->sdata->bss->req_smps,
1584                         sta->sta.addr,
1585                         sta->sdata->vif.bss_conf.bssid);
1586         }
1587
1588         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1589             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1590                 ieee80211_recalc_ps(local);
1591                 ieee80211_recalc_ps_vif(sdata);
1592         }
1593
1594         return 0;
1595 out_err:
1596         mutex_unlock(&local->sta_mtx);
1597         return err;
1598 }
1599
1600 #ifdef CONFIG_MAC80211_MESH
1601 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1602                                const u8 *dst, const u8 *next_hop)
1603 {
1604         struct ieee80211_sub_if_data *sdata;
1605         struct mesh_path *mpath;
1606         struct sta_info *sta;
1607
1608         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1609
1610         rcu_read_lock();
1611         sta = sta_info_get(sdata, next_hop);
1612         if (!sta) {
1613                 rcu_read_unlock();
1614                 return -ENOENT;
1615         }
1616
1617         mpath = mesh_path_add(sdata, dst);
1618         if (IS_ERR(mpath)) {
1619                 rcu_read_unlock();
1620                 return PTR_ERR(mpath);
1621         }
1622
1623         mesh_path_fix_nexthop(mpath, sta);
1624
1625         rcu_read_unlock();
1626         return 0;
1627 }
1628
1629 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1630                                const u8 *dst)
1631 {
1632         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1633
1634         if (dst)
1635                 return mesh_path_del(sdata, dst);
1636
1637         mesh_path_flush_by_iface(sdata);
1638         return 0;
1639 }
1640
1641 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1642                                   const u8 *dst, const u8 *next_hop)
1643 {
1644         struct ieee80211_sub_if_data *sdata;
1645         struct mesh_path *mpath;
1646         struct sta_info *sta;
1647
1648         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1649
1650         rcu_read_lock();
1651
1652         sta = sta_info_get(sdata, next_hop);
1653         if (!sta) {
1654                 rcu_read_unlock();
1655                 return -ENOENT;
1656         }
1657
1658         mpath = mesh_path_lookup(sdata, dst);
1659         if (!mpath) {
1660                 rcu_read_unlock();
1661                 return -ENOENT;
1662         }
1663
1664         mesh_path_fix_nexthop(mpath, sta);
1665
1666         rcu_read_unlock();
1667         return 0;
1668 }
1669
1670 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1671                             struct mpath_info *pinfo)
1672 {
1673         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1674
1675         if (next_hop_sta)
1676                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1677         else
1678                 eth_zero_addr(next_hop);
1679
1680         memset(pinfo, 0, sizeof(*pinfo));
1681
1682         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1683
1684         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1685                         MPATH_INFO_SN |
1686                         MPATH_INFO_METRIC |
1687                         MPATH_INFO_EXPTIME |
1688                         MPATH_INFO_DISCOVERY_TIMEOUT |
1689                         MPATH_INFO_DISCOVERY_RETRIES |
1690                         MPATH_INFO_FLAGS;
1691
1692         pinfo->frame_qlen = mpath->frame_queue.qlen;
1693         pinfo->sn = mpath->sn;
1694         pinfo->metric = mpath->metric;
1695         if (time_before(jiffies, mpath->exp_time))
1696                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1697         pinfo->discovery_timeout =
1698                         jiffies_to_msecs(mpath->discovery_timeout);
1699         pinfo->discovery_retries = mpath->discovery_retries;
1700         if (mpath->flags & MESH_PATH_ACTIVE)
1701                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1702         if (mpath->flags & MESH_PATH_RESOLVING)
1703                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1704         if (mpath->flags & MESH_PATH_SN_VALID)
1705                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1706         if (mpath->flags & MESH_PATH_FIXED)
1707                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1708         if (mpath->flags & MESH_PATH_RESOLVED)
1709                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1710 }
1711
1712 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1713                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1714
1715 {
1716         struct ieee80211_sub_if_data *sdata;
1717         struct mesh_path *mpath;
1718
1719         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1720
1721         rcu_read_lock();
1722         mpath = mesh_path_lookup(sdata, dst);
1723         if (!mpath) {
1724                 rcu_read_unlock();
1725                 return -ENOENT;
1726         }
1727         memcpy(dst, mpath->dst, ETH_ALEN);
1728         mpath_set_pinfo(mpath, next_hop, pinfo);
1729         rcu_read_unlock();
1730         return 0;
1731 }
1732
1733 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1734                                 int idx, u8 *dst, u8 *next_hop,
1735                                 struct mpath_info *pinfo)
1736 {
1737         struct ieee80211_sub_if_data *sdata;
1738         struct mesh_path *mpath;
1739
1740         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1741
1742         rcu_read_lock();
1743         mpath = mesh_path_lookup_by_idx(sdata, idx);
1744         if (!mpath) {
1745                 rcu_read_unlock();
1746                 return -ENOENT;
1747         }
1748         memcpy(dst, mpath->dst, ETH_ALEN);
1749         mpath_set_pinfo(mpath, next_hop, pinfo);
1750         rcu_read_unlock();
1751         return 0;
1752 }
1753
1754 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1755                           struct mpath_info *pinfo)
1756 {
1757         memset(pinfo, 0, sizeof(*pinfo));
1758         memcpy(mpp, mpath->mpp, ETH_ALEN);
1759
1760         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1761 }
1762
1763 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1764                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1765
1766 {
1767         struct ieee80211_sub_if_data *sdata;
1768         struct mesh_path *mpath;
1769
1770         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1771
1772         rcu_read_lock();
1773         mpath = mpp_path_lookup(sdata, dst);
1774         if (!mpath) {
1775                 rcu_read_unlock();
1776                 return -ENOENT;
1777         }
1778         memcpy(dst, mpath->dst, ETH_ALEN);
1779         mpp_set_pinfo(mpath, mpp, pinfo);
1780         rcu_read_unlock();
1781         return 0;
1782 }
1783
1784 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1785                               int idx, u8 *dst, u8 *mpp,
1786                               struct mpath_info *pinfo)
1787 {
1788         struct ieee80211_sub_if_data *sdata;
1789         struct mesh_path *mpath;
1790
1791         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1792
1793         rcu_read_lock();
1794         mpath = mpp_path_lookup_by_idx(sdata, idx);
1795         if (!mpath) {
1796                 rcu_read_unlock();
1797                 return -ENOENT;
1798         }
1799         memcpy(dst, mpath->dst, ETH_ALEN);
1800         mpp_set_pinfo(mpath, mpp, pinfo);
1801         rcu_read_unlock();
1802         return 0;
1803 }
1804
1805 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1806                                 struct net_device *dev,
1807                                 struct mesh_config *conf)
1808 {
1809         struct ieee80211_sub_if_data *sdata;
1810         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1811
1812         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1813         return 0;
1814 }
1815
1816 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1817 {
1818         return (mask >> (parm-1)) & 0x1;
1819 }
1820
1821 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1822                 const struct mesh_setup *setup)
1823 {
1824         u8 *new_ie;
1825         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1826                                         struct ieee80211_sub_if_data, u.mesh);
1827
1828         /* allocate information elements */
1829         new_ie = NULL;
1830
1831         if (setup->ie_len) {
1832                 new_ie = kmemdup(setup->ie, setup->ie_len,
1833                                 GFP_KERNEL);
1834                 if (!new_ie)
1835                         return -ENOMEM;
1836         }
1837         ifmsh->ie_len = setup->ie_len;
1838         ifmsh->ie = new_ie;
1839
1840         /* now copy the rest of the setup parameters */
1841         ifmsh->mesh_id_len = setup->mesh_id_len;
1842         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1843         ifmsh->mesh_sp_id = setup->sync_method;
1844         ifmsh->mesh_pp_id = setup->path_sel_proto;
1845         ifmsh->mesh_pm_id = setup->path_metric;
1846         ifmsh->user_mpm = setup->user_mpm;
1847         ifmsh->mesh_auth_id = setup->auth_id;
1848         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1849         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1850         if (setup->is_authenticated)
1851                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1852         if (setup->is_secure)
1853                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1854
1855         /* mcast rate setting in Mesh Node */
1856         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1857                                                 sizeof(setup->mcast_rate));
1858         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1859
1860         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1861         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1862
1863         return 0;
1864 }
1865
1866 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1867                                         struct net_device *dev, u32 mask,
1868                                         const struct mesh_config *nconf)
1869 {
1870         struct mesh_config *conf;
1871         struct ieee80211_sub_if_data *sdata;
1872         struct ieee80211_if_mesh *ifmsh;
1873
1874         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1875         ifmsh = &sdata->u.mesh;
1876
1877         /* Set the config options which we are interested in setting */
1878         conf = &(sdata->u.mesh.mshcfg);
1879         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1880                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1881         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1882                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1883         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1884                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1885         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1886                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1887         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1888                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1889         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1890                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1891         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1892                 conf->element_ttl = nconf->element_ttl;
1893         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1894                 if (ifmsh->user_mpm)
1895                         return -EBUSY;
1896                 conf->auto_open_plinks = nconf->auto_open_plinks;
1897         }
1898         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1899                 conf->dot11MeshNbrOffsetMaxNeighbor =
1900                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1901         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1902                 conf->dot11MeshHWMPmaxPREQretries =
1903                         nconf->dot11MeshHWMPmaxPREQretries;
1904         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1905                 conf->path_refresh_time = nconf->path_refresh_time;
1906         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1907                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1908         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1909                 conf->dot11MeshHWMPactivePathTimeout =
1910                         nconf->dot11MeshHWMPactivePathTimeout;
1911         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1912                 conf->dot11MeshHWMPpreqMinInterval =
1913                         nconf->dot11MeshHWMPpreqMinInterval;
1914         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1915                 conf->dot11MeshHWMPperrMinInterval =
1916                         nconf->dot11MeshHWMPperrMinInterval;
1917         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1918                            mask))
1919                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1920                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1921         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1922                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1923                 ieee80211_mesh_root_setup(ifmsh);
1924         }
1925         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1926                 /* our current gate announcement implementation rides on root
1927                  * announcements, so require this ifmsh to also be a root node
1928                  * */
1929                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1930                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1931                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1932                         ieee80211_mesh_root_setup(ifmsh);
1933                 }
1934                 conf->dot11MeshGateAnnouncementProtocol =
1935                         nconf->dot11MeshGateAnnouncementProtocol;
1936         }
1937         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1938                 conf->dot11MeshHWMPRannInterval =
1939                         nconf->dot11MeshHWMPRannInterval;
1940         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1941                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1942         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1943                 /* our RSSI threshold implementation is supported only for
1944                  * devices that report signal in dBm.
1945                  */
1946                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1947                         return -ENOTSUPP;
1948                 conf->rssi_threshold = nconf->rssi_threshold;
1949         }
1950         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1951                 conf->ht_opmode = nconf->ht_opmode;
1952                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1953                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1954         }
1955         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1956                 conf->dot11MeshHWMPactivePathToRootTimeout =
1957                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1958         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1959                 conf->dot11MeshHWMProotInterval =
1960                         nconf->dot11MeshHWMProotInterval;
1961         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1962                 conf->dot11MeshHWMPconfirmationInterval =
1963                         nconf->dot11MeshHWMPconfirmationInterval;
1964         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1965                 conf->power_mode = nconf->power_mode;
1966                 ieee80211_mps_local_status_update(sdata);
1967         }
1968         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1969                 conf->dot11MeshAwakeWindowDuration =
1970                         nconf->dot11MeshAwakeWindowDuration;
1971         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1972                 conf->plink_timeout = nconf->plink_timeout;
1973         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1974         return 0;
1975 }
1976
1977 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1978                                const struct mesh_config *conf,
1979                                const struct mesh_setup *setup)
1980 {
1981         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1982         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1983         int err;
1984
1985         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1986         err = copy_mesh_setup(ifmsh, setup);
1987         if (err)
1988                 return err;
1989
1990         sdata->control_port_over_nl80211 = setup->control_port_over_nl80211;
1991
1992         /* can mesh use other SMPS modes? */
1993         sdata->smps_mode = IEEE80211_SMPS_OFF;
1994         sdata->needed_rx_chains = sdata->local->rx_chains;
1995
1996         mutex_lock(&sdata->local->mtx);
1997         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1998                                         IEEE80211_CHANCTX_SHARED);
1999         mutex_unlock(&sdata->local->mtx);
2000         if (err)
2001                 return err;
2002
2003         return ieee80211_start_mesh(sdata);
2004 }
2005
2006 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2007 {
2008         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2009
2010         ieee80211_stop_mesh(sdata);
2011         mutex_lock(&sdata->local->mtx);
2012         ieee80211_vif_release_channel(sdata);
2013         kfree(sdata->u.mesh.ie);
2014         mutex_unlock(&sdata->local->mtx);
2015
2016         return 0;
2017 }
2018 #endif
2019
2020 static int ieee80211_change_bss(struct wiphy *wiphy,
2021                                 struct net_device *dev,
2022                                 struct bss_parameters *params)
2023 {
2024         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2025         struct ieee80211_supported_band *sband;
2026         u32 changed = 0;
2027
2028         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2029                 return -ENOENT;
2030
2031         sband = ieee80211_get_sband(sdata);
2032         if (!sband)
2033                 return -EINVAL;
2034
2035         if (params->use_cts_prot >= 0) {
2036                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2037                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2038         }
2039         if (params->use_short_preamble >= 0) {
2040                 sdata->vif.bss_conf.use_short_preamble =
2041                         params->use_short_preamble;
2042                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2043         }
2044
2045         if (!sdata->vif.bss_conf.use_short_slot &&
2046             sband->band == NL80211_BAND_5GHZ) {
2047                 sdata->vif.bss_conf.use_short_slot = true;
2048                 changed |= BSS_CHANGED_ERP_SLOT;
2049         }
2050
2051         if (params->use_short_slot_time >= 0) {
2052                 sdata->vif.bss_conf.use_short_slot =
2053                         params->use_short_slot_time;
2054                 changed |= BSS_CHANGED_ERP_SLOT;
2055         }
2056
2057         if (params->basic_rates) {
2058                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2059                                          wiphy->bands[sband->band],
2060                                          params->basic_rates,
2061                                          params->basic_rates_len,
2062                                          &sdata->vif.bss_conf.basic_rates);
2063                 changed |= BSS_CHANGED_BASIC_RATES;
2064                 ieee80211_check_rate_mask(sdata);
2065         }
2066
2067         if (params->ap_isolate >= 0) {
2068                 if (params->ap_isolate)
2069                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2070                 else
2071                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2072                 ieee80211_check_fast_rx_iface(sdata);
2073         }
2074
2075         if (params->ht_opmode >= 0) {
2076                 sdata->vif.bss_conf.ht_operation_mode =
2077                         (u16) params->ht_opmode;
2078                 changed |= BSS_CHANGED_HT;
2079         }
2080
2081         if (params->p2p_ctwindow >= 0) {
2082                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2083                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2084                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2085                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2086                 changed |= BSS_CHANGED_P2P_PS;
2087         }
2088
2089         if (params->p2p_opp_ps > 0) {
2090                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2091                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2092                 changed |= BSS_CHANGED_P2P_PS;
2093         } else if (params->p2p_opp_ps == 0) {
2094                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2095                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2096                 changed |= BSS_CHANGED_P2P_PS;
2097         }
2098
2099         ieee80211_bss_info_change_notify(sdata, changed);
2100
2101         return 0;
2102 }
2103
2104 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2105                                     struct net_device *dev,
2106                                     struct ieee80211_txq_params *params)
2107 {
2108         struct ieee80211_local *local = wiphy_priv(wiphy);
2109         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2110         struct ieee80211_tx_queue_params p;
2111
2112         if (!local->ops->conf_tx)
2113                 return -EOPNOTSUPP;
2114
2115         if (local->hw.queues < IEEE80211_NUM_ACS)
2116                 return -EOPNOTSUPP;
2117
2118         memset(&p, 0, sizeof(p));
2119         p.aifs = params->aifs;
2120         p.cw_max = params->cwmax;
2121         p.cw_min = params->cwmin;
2122         p.txop = params->txop;
2123
2124         /*
2125          * Setting tx queue params disables u-apsd because it's only
2126          * called in master mode.
2127          */
2128         p.uapsd = false;
2129
2130         ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac);
2131
2132         sdata->tx_conf[params->ac] = p;
2133         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2134                 wiphy_debug(local->hw.wiphy,
2135                             "failed to set TX queue parameters for AC %d\n",
2136                             params->ac);
2137                 return -EINVAL;
2138         }
2139
2140         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2141
2142         return 0;
2143 }
2144
2145 #ifdef CONFIG_PM
2146 static int ieee80211_suspend(struct wiphy *wiphy,
2147                              struct cfg80211_wowlan *wowlan)
2148 {
2149         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2150 }
2151
2152 static int ieee80211_resume(struct wiphy *wiphy)
2153 {
2154         return __ieee80211_resume(wiphy_priv(wiphy));
2155 }
2156 #else
2157 #define ieee80211_suspend NULL
2158 #define ieee80211_resume NULL
2159 #endif
2160
2161 static int ieee80211_scan(struct wiphy *wiphy,
2162                           struct cfg80211_scan_request *req)
2163 {
2164         struct ieee80211_sub_if_data *sdata;
2165
2166         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2167
2168         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2169         case NL80211_IFTYPE_STATION:
2170         case NL80211_IFTYPE_ADHOC:
2171         case NL80211_IFTYPE_MESH_POINT:
2172         case NL80211_IFTYPE_P2P_CLIENT:
2173         case NL80211_IFTYPE_P2P_DEVICE:
2174                 break;
2175         case NL80211_IFTYPE_P2P_GO:
2176                 if (sdata->local->ops->hw_scan)
2177                         break;
2178                 /*
2179                  * FIXME: implement NoA while scanning in software,
2180                  * for now fall through to allow scanning only when
2181                  * beaconing hasn't been configured yet
2182                  */
2183                 /* fall through */
2184         case NL80211_IFTYPE_AP:
2185                 /*
2186                  * If the scan has been forced (and the driver supports
2187                  * forcing), don't care about being beaconing already.
2188                  * This will create problems to the attached stations (e.g. all
2189                  * the  frames sent while scanning on other channel will be
2190                  * lost)
2191                  */
2192                 if (sdata->u.ap.beacon &&
2193                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2194                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2195                         return -EOPNOTSUPP;
2196                 break;
2197         case NL80211_IFTYPE_NAN:
2198         default:
2199                 return -EOPNOTSUPP;
2200         }
2201
2202         return ieee80211_request_scan(sdata, req);
2203 }
2204
2205 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2206 {
2207         ieee80211_scan_cancel(wiphy_priv(wiphy));
2208 }
2209
2210 static int
2211 ieee80211_sched_scan_start(struct wiphy *wiphy,
2212                            struct net_device *dev,
2213                            struct cfg80211_sched_scan_request *req)
2214 {
2215         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2216
2217         if (!sdata->local->ops->sched_scan_start)
2218                 return -EOPNOTSUPP;
2219
2220         return ieee80211_request_sched_scan_start(sdata, req);
2221 }
2222
2223 static int
2224 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2225                           u64 reqid)
2226 {
2227         struct ieee80211_local *local = wiphy_priv(wiphy);
2228
2229         if (!local->ops->sched_scan_stop)
2230                 return -EOPNOTSUPP;
2231
2232         return ieee80211_request_sched_scan_stop(local);
2233 }
2234
2235 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2236                           struct cfg80211_auth_request *req)
2237 {
2238         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2239 }
2240
2241 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2242                            struct cfg80211_assoc_request *req)
2243 {
2244         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2245 }
2246
2247 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2248                             struct cfg80211_deauth_request *req)
2249 {
2250         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2251 }
2252
2253 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2254                               struct cfg80211_disassoc_request *req)
2255 {
2256         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2257 }
2258
2259 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2260                                struct cfg80211_ibss_params *params)
2261 {
2262         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2263 }
2264
2265 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2266 {
2267         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2268 }
2269
2270 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2271                               struct ocb_setup *setup)
2272 {
2273         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2274 }
2275
2276 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2277 {
2278         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2279 }
2280
2281 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2282                                     int rate[NUM_NL80211_BANDS])
2283 {
2284         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2285
2286         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2287                sizeof(int) * NUM_NL80211_BANDS);
2288
2289         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE);
2290
2291         return 0;
2292 }
2293
2294 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2295 {
2296         struct ieee80211_local *local = wiphy_priv(wiphy);
2297         int err;
2298
2299         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2300                 ieee80211_check_fast_xmit_all(local);
2301
2302                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2303
2304                 if (err) {
2305                         ieee80211_check_fast_xmit_all(local);
2306                         return err;
2307                 }
2308         }
2309
2310         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2311             (changed & WIPHY_PARAM_DYN_ACK)) {
2312                 s16 coverage_class;
2313
2314                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2315                                         wiphy->coverage_class : -1;
2316                 err = drv_set_coverage_class(local, coverage_class);
2317
2318                 if (err)
2319                         return err;
2320         }
2321
2322         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2323                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2324
2325                 if (err)
2326                         return err;
2327         }
2328
2329         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2330                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2331                         return -EINVAL;
2332                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2333         }
2334         if (changed & WIPHY_PARAM_RETRY_LONG) {
2335                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2336                         return -EINVAL;
2337                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2338         }
2339         if (changed &
2340             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2341                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2342
2343         if (changed & (WIPHY_PARAM_TXQ_LIMIT |
2344                        WIPHY_PARAM_TXQ_MEMORY_LIMIT |
2345                        WIPHY_PARAM_TXQ_QUANTUM))
2346                 ieee80211_txq_set_params(local);
2347
2348         return 0;
2349 }
2350
2351 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2352                                   struct wireless_dev *wdev,
2353                                   enum nl80211_tx_power_setting type, int mbm)
2354 {
2355         struct ieee80211_local *local = wiphy_priv(wiphy);
2356         struct ieee80211_sub_if_data *sdata;
2357         enum nl80211_tx_power_setting txp_type = type;
2358         bool update_txp_type = false;
2359         bool has_monitor = false;
2360
2361         if (wdev) {
2362                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2363
2364                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2365                         sdata = rtnl_dereference(local->monitor_sdata);
2366                         if (!sdata)
2367                                 return -EOPNOTSUPP;
2368                 }
2369
2370                 switch (type) {
2371                 case NL80211_TX_POWER_AUTOMATIC:
2372                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2373                         txp_type = NL80211_TX_POWER_LIMITED;
2374                         break;
2375                 case NL80211_TX_POWER_LIMITED:
2376                 case NL80211_TX_POWER_FIXED:
2377                         if (mbm < 0 || (mbm % 100))
2378                                 return -EOPNOTSUPP;
2379                         sdata->user_power_level = MBM_TO_DBM(mbm);
2380                         break;
2381                 }
2382
2383                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2384                         update_txp_type = true;
2385                         sdata->vif.bss_conf.txpower_type = txp_type;
2386                 }
2387
2388                 ieee80211_recalc_txpower(sdata, update_txp_type);
2389
2390                 return 0;
2391         }
2392
2393         switch (type) {
2394         case NL80211_TX_POWER_AUTOMATIC:
2395                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2396                 txp_type = NL80211_TX_POWER_LIMITED;
2397                 break;
2398         case NL80211_TX_POWER_LIMITED:
2399         case NL80211_TX_POWER_FIXED:
2400                 if (mbm < 0 || (mbm % 100))
2401                         return -EOPNOTSUPP;
2402                 local->user_power_level = MBM_TO_DBM(mbm);
2403                 break;
2404         }
2405
2406         mutex_lock(&local->iflist_mtx);
2407         list_for_each_entry(sdata, &local->interfaces, list) {
2408                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2409                         has_monitor = true;
2410                         continue;
2411                 }
2412                 sdata->user_power_level = local->user_power_level;
2413                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2414                         update_txp_type = true;
2415                 sdata->vif.bss_conf.txpower_type = txp_type;
2416         }
2417         list_for_each_entry(sdata, &local->interfaces, list) {
2418                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2419                         continue;
2420                 ieee80211_recalc_txpower(sdata, update_txp_type);
2421         }
2422         mutex_unlock(&local->iflist_mtx);
2423
2424         if (has_monitor) {
2425                 sdata = rtnl_dereference(local->monitor_sdata);
2426                 if (sdata) {
2427                         sdata->user_power_level = local->user_power_level;
2428                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2429                                 update_txp_type = true;
2430                         sdata->vif.bss_conf.txpower_type = txp_type;
2431
2432                         ieee80211_recalc_txpower(sdata, update_txp_type);
2433                 }
2434         }
2435
2436         return 0;
2437 }
2438
2439 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2440                                   struct wireless_dev *wdev,
2441                                   int *dbm)
2442 {
2443         struct ieee80211_local *local = wiphy_priv(wiphy);
2444         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2445
2446         if (local->ops->get_txpower)
2447                 return drv_get_txpower(local, sdata, dbm);
2448
2449         if (!local->use_chanctx)
2450                 *dbm = local->hw.conf.power_level;
2451         else
2452                 *dbm = sdata->vif.bss_conf.txpower;
2453
2454         /* INT_MIN indicates no power level was set yet */
2455         if (*dbm == INT_MIN)
2456                 return -EINVAL;
2457
2458         return 0;
2459 }
2460
2461 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2462                                   const u8 *addr)
2463 {
2464         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2465
2466         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2467
2468         return 0;
2469 }
2470
2471 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2472 {
2473         struct ieee80211_local *local = wiphy_priv(wiphy);
2474
2475         drv_rfkill_poll(local);
2476 }
2477
2478 #ifdef CONFIG_NL80211_TESTMODE
2479 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2480                                   struct wireless_dev *wdev,
2481                                   void *data, int len)
2482 {
2483         struct ieee80211_local *local = wiphy_priv(wiphy);
2484         struct ieee80211_vif *vif = NULL;
2485
2486         if (!local->ops->testmode_cmd)
2487                 return -EOPNOTSUPP;
2488
2489         if (wdev) {
2490                 struct ieee80211_sub_if_data *sdata;
2491
2492                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2493                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2494                         vif = &sdata->vif;
2495         }
2496
2497         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2498 }
2499
2500 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2501                                    struct sk_buff *skb,
2502                                    struct netlink_callback *cb,
2503                                    void *data, int len)
2504 {
2505         struct ieee80211_local *local = wiphy_priv(wiphy);
2506
2507         if (!local->ops->testmode_dump)
2508                 return -EOPNOTSUPP;
2509
2510         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2511 }
2512 #endif
2513
2514 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2515                                 enum ieee80211_smps_mode smps_mode)
2516 {
2517         struct sta_info *sta;
2518         enum ieee80211_smps_mode old_req;
2519
2520         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2521                 return -EINVAL;
2522
2523         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2524                 return 0;
2525
2526         old_req = sdata->u.ap.req_smps;
2527         sdata->u.ap.req_smps = smps_mode;
2528
2529         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2530         if (old_req == smps_mode ||
2531             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2532                 return 0;
2533
2534         ht_dbg(sdata,
2535                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2536                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2537
2538         mutex_lock(&sdata->local->sta_mtx);
2539         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2540                 /*
2541                  * Only stations associated to our AP and
2542                  * associated VLANs
2543                  */
2544                 if (sta->sdata->bss != &sdata->u.ap)
2545                         continue;
2546
2547                 /* This station doesn't support MIMO - skip it */
2548                 if (sta_info_tx_streams(sta) == 1)
2549                         continue;
2550
2551                 /*
2552                  * Don't wake up a STA just to send the action frame
2553                  * unless we are getting more restrictive.
2554                  */
2555                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2556                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2557                                                    smps_mode)) {
2558                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2559                                sta->sta.addr);
2560                         continue;
2561                 }
2562
2563                 /*
2564                  * If the STA is not authorized, wait until it gets
2565                  * authorized and the action frame will be sent then.
2566                  */
2567                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2568                         continue;
2569
2570                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2571                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2572                                            sdata->vif.bss_conf.bssid);
2573         }
2574         mutex_unlock(&sdata->local->sta_mtx);
2575
2576         sdata->smps_mode = smps_mode;
2577         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2578
2579         return 0;
2580 }
2581
2582 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2583                                  enum ieee80211_smps_mode smps_mode)
2584 {
2585         const u8 *ap;
2586         enum ieee80211_smps_mode old_req;
2587         int err;
2588         struct sta_info *sta;
2589         bool tdls_peer_found = false;
2590
2591         lockdep_assert_held(&sdata->wdev.mtx);
2592
2593         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2594                 return -EINVAL;
2595
2596         old_req = sdata->u.mgd.req_smps;
2597         sdata->u.mgd.req_smps = smps_mode;
2598
2599         if (old_req == smps_mode &&
2600             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2601                 return 0;
2602
2603         /*
2604          * If not associated, or current association is not an HT
2605          * association, there's no need to do anything, just store
2606          * the new value until we associate.
2607          */
2608         if (!sdata->u.mgd.associated ||
2609             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2610                 return 0;
2611
2612         ap = sdata->u.mgd.associated->bssid;
2613
2614         rcu_read_lock();
2615         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2616                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2617                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2618                         continue;
2619
2620                 tdls_peer_found = true;
2621                 break;
2622         }
2623         rcu_read_unlock();
2624
2625         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2626                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2627                         smps_mode = IEEE80211_SMPS_OFF;
2628                 else
2629                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2630         }
2631
2632         /* send SM PS frame to AP */
2633         err = ieee80211_send_smps_action(sdata, smps_mode,
2634                                          ap, ap);
2635         if (err)
2636                 sdata->u.mgd.req_smps = old_req;
2637         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2638                 ieee80211_teardown_tdls_peers(sdata);
2639
2640         return err;
2641 }
2642
2643 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2644                                     bool enabled, int timeout)
2645 {
2646         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2647         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2648
2649         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2650                 return -EOPNOTSUPP;
2651
2652         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2653                 return -EOPNOTSUPP;
2654
2655         if (enabled == sdata->u.mgd.powersave &&
2656             timeout == local->dynamic_ps_forced_timeout)
2657                 return 0;
2658
2659         sdata->u.mgd.powersave = enabled;
2660         local->dynamic_ps_forced_timeout = timeout;
2661
2662         /* no change, but if automatic follow powersave */
2663         sdata_lock(sdata);
2664         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2665         sdata_unlock(sdata);
2666
2667         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2668                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2669
2670         ieee80211_recalc_ps(local);
2671         ieee80211_recalc_ps_vif(sdata);
2672         ieee80211_check_fast_rx_iface(sdata);
2673
2674         return 0;
2675 }
2676
2677 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2678                                          struct net_device *dev,
2679                                          s32 rssi_thold, u32 rssi_hyst)
2680 {
2681         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2682         struct ieee80211_vif *vif = &sdata->vif;
2683         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2684
2685         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2686             rssi_hyst == bss_conf->cqm_rssi_hyst)
2687                 return 0;
2688
2689         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2690             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2691                 return -EOPNOTSUPP;
2692
2693         bss_conf->cqm_rssi_thold = rssi_thold;
2694         bss_conf->cqm_rssi_hyst = rssi_hyst;
2695         bss_conf->cqm_rssi_low = 0;
2696         bss_conf->cqm_rssi_high = 0;
2697         sdata->u.mgd.last_cqm_event_signal = 0;
2698
2699         /* tell the driver upon association, unless already associated */
2700         if (sdata->u.mgd.associated &&
2701             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2702                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2703
2704         return 0;
2705 }
2706
2707 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2708                                                struct net_device *dev,
2709                                                s32 rssi_low, s32 rssi_high)
2710 {
2711         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2712         struct ieee80211_vif *vif = &sdata->vif;
2713         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2714
2715         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2716                 return -EOPNOTSUPP;
2717
2718         bss_conf->cqm_rssi_low = rssi_low;
2719         bss_conf->cqm_rssi_high = rssi_high;
2720         bss_conf->cqm_rssi_thold = 0;
2721         bss_conf->cqm_rssi_hyst = 0;
2722         sdata->u.mgd.last_cqm_event_signal = 0;
2723
2724         /* tell the driver upon association, unless already associated */
2725         if (sdata->u.mgd.associated &&
2726             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2727                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2728
2729         return 0;
2730 }
2731
2732 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2733                                       struct net_device *dev,
2734                                       const u8 *addr,
2735                                       const struct cfg80211_bitrate_mask *mask)
2736 {
2737         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2738         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2739         int i, ret;
2740
2741         if (!ieee80211_sdata_running(sdata))
2742                 return -ENETDOWN;
2743
2744         /*
2745          * If active validate the setting and reject it if it doesn't leave
2746          * at least one basic rate usable, since we really have to be able
2747          * to send something, and if we're an AP we have to be able to do
2748          * so at a basic rate so that all clients can receive it.
2749          */
2750         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2751             sdata->vif.bss_conf.chandef.chan) {
2752                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2753                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2754
2755                 if (!(mask->control[band].legacy & basic_rates))
2756                         return -EINVAL;
2757         }
2758
2759         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2760                 ret = drv_set_bitrate_mask(local, sdata, mask);
2761                 if (ret)
2762                         return ret;
2763         }
2764
2765         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2766                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2767                 int j;
2768
2769                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2770                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2771                        sizeof(mask->control[i].ht_mcs));
2772                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2773                        mask->control[i].vht_mcs,
2774                        sizeof(mask->control[i].vht_mcs));
2775
2776                 sdata->rc_has_mcs_mask[i] = false;
2777                 sdata->rc_has_vht_mcs_mask[i] = false;
2778                 if (!sband)
2779                         continue;
2780
2781                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2782                         if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) {
2783                                 sdata->rc_has_mcs_mask[i] = true;
2784                                 break;
2785                         }
2786                 }
2787
2788                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2789                         if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) {
2790                                 sdata->rc_has_vht_mcs_mask[i] = true;
2791                                 break;
2792                         }
2793                 }
2794         }
2795
2796         return 0;
2797 }
2798
2799 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2800                                            struct net_device *dev,
2801                                            struct cfg80211_chan_def *chandef,
2802                                            u32 cac_time_ms)
2803 {
2804         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2805         struct ieee80211_local *local = sdata->local;
2806         int err;
2807
2808         mutex_lock(&local->mtx);
2809         if (!list_empty(&local->roc_list) || local->scanning) {
2810                 err = -EBUSY;
2811                 goto out_unlock;
2812         }
2813
2814         /* whatever, but channel contexts should not complain about that one */
2815         sdata->smps_mode = IEEE80211_SMPS_OFF;
2816         sdata->needed_rx_chains = local->rx_chains;
2817
2818         err = ieee80211_vif_use_channel(sdata, chandef,
2819                                         IEEE80211_CHANCTX_SHARED);
2820         if (err)
2821                 goto out_unlock;
2822
2823         ieee80211_queue_delayed_work(&sdata->local->hw,
2824                                      &sdata->dfs_cac_timer_work,
2825                                      msecs_to_jiffies(cac_time_ms));
2826
2827  out_unlock:
2828         mutex_unlock(&local->mtx);
2829         return err;
2830 }
2831
2832 static void ieee80211_end_cac(struct wiphy *wiphy,
2833                               struct net_device *dev)
2834 {
2835         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2836         struct ieee80211_local *local = sdata->local;
2837
2838         mutex_lock(&local->mtx);
2839         list_for_each_entry(sdata, &local->interfaces, list) {
2840                 /* it might be waiting for the local->mtx, but then
2841                  * by the time it gets it, sdata->wdev.cac_started
2842                  * will no longer be true
2843                  */
2844                 cancel_delayed_work(&sdata->dfs_cac_timer_work);
2845
2846                 if (sdata->wdev.cac_started) {
2847                         ieee80211_vif_release_channel(sdata);
2848                         sdata->wdev.cac_started = false;
2849                 }
2850         }
2851         mutex_unlock(&local->mtx);
2852 }
2853
2854 static struct cfg80211_beacon_data *
2855 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2856 {
2857         struct cfg80211_beacon_data *new_beacon;
2858         u8 *pos;
2859         int len;
2860
2861         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2862               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2863               beacon->probe_resp_len;
2864
2865         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2866         if (!new_beacon)
2867                 return NULL;
2868
2869         pos = (u8 *)(new_beacon + 1);
2870         if (beacon->head_len) {
2871                 new_beacon->head_len = beacon->head_len;
2872                 new_beacon->head = pos;
2873                 memcpy(pos, beacon->head, beacon->head_len);
2874                 pos += beacon->head_len;
2875         }
2876         if (beacon->tail_len) {
2877                 new_beacon->tail_len = beacon->tail_len;
2878                 new_beacon->tail = pos;
2879                 memcpy(pos, beacon->tail, beacon->tail_len);
2880                 pos += beacon->tail_len;
2881         }
2882         if (beacon->beacon_ies_len) {
2883                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2884                 new_beacon->beacon_ies = pos;
2885                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2886                 pos += beacon->beacon_ies_len;
2887         }
2888         if (beacon->proberesp_ies_len) {
2889                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2890                 new_beacon->proberesp_ies = pos;
2891                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2892                 pos += beacon->proberesp_ies_len;
2893         }
2894         if (beacon->assocresp_ies_len) {
2895                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2896                 new_beacon->assocresp_ies = pos;
2897                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2898                 pos += beacon->assocresp_ies_len;
2899         }
2900         if (beacon->probe_resp_len) {
2901                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2902                 new_beacon->probe_resp = pos;
2903                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2904                 pos += beacon->probe_resp_len;
2905         }
2906
2907         return new_beacon;
2908 }
2909
2910 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2911 {
2912         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2913
2914         ieee80211_queue_work(&sdata->local->hw,
2915                              &sdata->csa_finalize_work);
2916 }
2917 EXPORT_SYMBOL(ieee80211_csa_finish);
2918
2919 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2920                                           u32 *changed)
2921 {
2922         int err;
2923
2924         switch (sdata->vif.type) {
2925         case NL80211_IFTYPE_AP:
2926                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2927                                               NULL);
2928                 kfree(sdata->u.ap.next_beacon);
2929                 sdata->u.ap.next_beacon = NULL;
2930
2931                 if (err < 0)
2932                         return err;
2933                 *changed |= err;
2934                 break;
2935         case NL80211_IFTYPE_ADHOC:
2936                 err = ieee80211_ibss_finish_csa(sdata);
2937                 if (err < 0)
2938                         return err;
2939                 *changed |= err;
2940                 break;
2941 #ifdef CONFIG_MAC80211_MESH
2942         case NL80211_IFTYPE_MESH_POINT:
2943                 err = ieee80211_mesh_finish_csa(sdata);
2944                 if (err < 0)
2945                         return err;
2946                 *changed |= err;
2947                 break;
2948 #endif
2949         default:
2950                 WARN_ON(1);
2951                 return -EINVAL;
2952         }
2953
2954         return 0;
2955 }
2956
2957 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2958 {
2959         struct ieee80211_local *local = sdata->local;
2960         u32 changed = 0;
2961         int err;
2962
2963         sdata_assert_lock(sdata);
2964         lockdep_assert_held(&local->mtx);
2965         lockdep_assert_held(&local->chanctx_mtx);
2966
2967         /*
2968          * using reservation isn't immediate as it may be deferred until later
2969          * with multi-vif. once reservation is complete it will re-schedule the
2970          * work with no reserved_chanctx so verify chandef to check if it
2971          * completed successfully
2972          */
2973
2974         if (sdata->reserved_chanctx) {
2975                 /*
2976                  * with multi-vif csa driver may call ieee80211_csa_finish()
2977                  * many times while waiting for other interfaces to use their
2978                  * reservations
2979                  */
2980                 if (sdata->reserved_ready)
2981                         return 0;
2982
2983                 return ieee80211_vif_use_reserved_context(sdata);
2984         }
2985
2986         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2987                                         &sdata->csa_chandef))
2988                 return -EINVAL;
2989
2990         sdata->vif.csa_active = false;
2991
2992         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2993         if (err)
2994                 return err;
2995
2996         ieee80211_bss_info_change_notify(sdata, changed);
2997
2998         if (sdata->csa_block_tx) {
2999                 ieee80211_wake_vif_queues(local, sdata,
3000                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3001                 sdata->csa_block_tx = false;
3002         }
3003
3004         err = drv_post_channel_switch(sdata);
3005         if (err)
3006                 return err;
3007
3008         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3009
3010         return 0;
3011 }
3012
3013 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3014 {
3015         if (__ieee80211_csa_finalize(sdata)) {
3016                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3017                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3018                                     GFP_KERNEL);
3019         }
3020 }
3021
3022 void ieee80211_csa_finalize_work(struct work_struct *work)
3023 {
3024         struct ieee80211_sub_if_data *sdata =
3025                 container_of(work, struct ieee80211_sub_if_data,
3026                              csa_finalize_work);
3027         struct ieee80211_local *local = sdata->local;
3028
3029         sdata_lock(sdata);
3030         mutex_lock(&local->mtx);
3031         mutex_lock(&local->chanctx_mtx);
3032
3033         /* AP might have been stopped while waiting for the lock. */
3034         if (!sdata->vif.csa_active)
3035                 goto unlock;
3036
3037         if (!ieee80211_sdata_running(sdata))
3038                 goto unlock;
3039
3040         ieee80211_csa_finalize(sdata);
3041
3042 unlock:
3043         mutex_unlock(&local->chanctx_mtx);
3044         mutex_unlock(&local->mtx);
3045         sdata_unlock(sdata);
3046 }
3047
3048 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3049                                     struct cfg80211_csa_settings *params,
3050                                     u32 *changed)
3051 {
3052         struct ieee80211_csa_settings csa = {};
3053         int err;
3054
3055         switch (sdata->vif.type) {
3056         case NL80211_IFTYPE_AP:
3057                 sdata->u.ap.next_beacon =
3058                         cfg80211_beacon_dup(&params->beacon_after);
3059                 if (!sdata->u.ap.next_beacon)
3060                         return -ENOMEM;
3061
3062                 /*
3063                  * With a count of 0, we don't have to wait for any
3064                  * TBTT before switching, so complete the CSA
3065                  * immediately.  In theory, with a count == 1 we
3066                  * should delay the switch until just before the next
3067                  * TBTT, but that would complicate things so we switch
3068                  * immediately too.  If we would delay the switch
3069                  * until the next TBTT, we would have to set the probe
3070                  * response here.
3071                  *
3072                  * TODO: A channel switch with count <= 1 without
3073                  * sending a CSA action frame is kind of useless,
3074                  * because the clients won't know we're changing
3075                  * channels.  The action frame must be implemented
3076                  * either here or in the userspace.
3077                  */
3078                 if (params->count <= 1)
3079                         break;
3080
3081                 if ((params->n_counter_offsets_beacon >
3082                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3083                     (params->n_counter_offsets_presp >
3084                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3085                         return -EINVAL;
3086
3087                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3088                 csa.counter_offsets_presp = params->counter_offsets_presp;
3089                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3090                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3091                 csa.count = params->count;
3092
3093                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3094                 if (err < 0) {
3095                         kfree(sdata->u.ap.next_beacon);
3096                         return err;
3097                 }
3098                 *changed |= err;
3099
3100                 break;
3101         case NL80211_IFTYPE_ADHOC:
3102                 if (!sdata->vif.bss_conf.ibss_joined)
3103                         return -EINVAL;
3104
3105                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3106                         return -EINVAL;
3107
3108                 switch (params->chandef.width) {
3109                 case NL80211_CHAN_WIDTH_40:
3110                         if (cfg80211_get_chandef_type(&params->chandef) !=
3111                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3112                                 return -EINVAL;
3113                 case NL80211_CHAN_WIDTH_5:
3114                 case NL80211_CHAN_WIDTH_10:
3115                 case NL80211_CHAN_WIDTH_20_NOHT:
3116                 case NL80211_CHAN_WIDTH_20:
3117                         break;
3118                 default:
3119                         return -EINVAL;
3120                 }
3121
3122                 /* changes into another band are not supported */
3123                 if (sdata->u.ibss.chandef.chan->band !=
3124                     params->chandef.chan->band)
3125                         return -EINVAL;
3126
3127                 /* see comments in the NL80211_IFTYPE_AP block */
3128                 if (params->count > 1) {
3129                         err = ieee80211_ibss_csa_beacon(sdata, params);
3130                         if (err < 0)
3131                                 return err;
3132                         *changed |= err;
3133                 }
3134
3135                 ieee80211_send_action_csa(sdata, params);
3136
3137                 break;
3138 #ifdef CONFIG_MAC80211_MESH
3139         case NL80211_IFTYPE_MESH_POINT: {
3140                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3141
3142                 /* changes into another band are not supported */
3143                 if (sdata->vif.bss_conf.chandef.chan->band !=
3144                     params->chandef.chan->band)
3145                         return -EINVAL;
3146
3147                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3148                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3149                         if (!ifmsh->pre_value)
3150                                 ifmsh->pre_value = 1;
3151                         else
3152                                 ifmsh->pre_value++;
3153                 }
3154
3155                 /* see comments in the NL80211_IFTYPE_AP block */
3156                 if (params->count > 1) {
3157                         err = ieee80211_mesh_csa_beacon(sdata, params);
3158                         if (err < 0) {
3159                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3160                                 return err;
3161                         }
3162                         *changed |= err;
3163                 }
3164
3165                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3166                         ieee80211_send_action_csa(sdata, params);
3167
3168                 break;
3169                 }
3170 #endif
3171         default:
3172                 return -EOPNOTSUPP;
3173         }
3174
3175         return 0;
3176 }
3177
3178 static int
3179 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3180                            struct cfg80211_csa_settings *params)
3181 {
3182         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3183         struct ieee80211_local *local = sdata->local;
3184         struct ieee80211_channel_switch ch_switch;
3185         struct ieee80211_chanctx_conf *conf;
3186         struct ieee80211_chanctx *chanctx;
3187         u32 changed = 0;
3188         int err;
3189
3190         sdata_assert_lock(sdata);
3191         lockdep_assert_held(&local->mtx);
3192
3193         if (!list_empty(&local->roc_list) || local->scanning)
3194                 return -EBUSY;
3195
3196         if (sdata->wdev.cac_started)
3197                 return -EBUSY;
3198
3199         if (cfg80211_chandef_identical(&params->chandef,
3200                                        &sdata->vif.bss_conf.chandef))
3201                 return -EINVAL;
3202
3203         /* don't allow another channel switch if one is already active. */
3204         if (sdata->vif.csa_active)
3205                 return -EBUSY;
3206
3207         mutex_lock(&local->chanctx_mtx);
3208         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3209                                          lockdep_is_held(&local->chanctx_mtx));
3210         if (!conf) {
3211                 err = -EBUSY;
3212                 goto out;
3213         }
3214
3215         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3216
3217         ch_switch.timestamp = 0;
3218         ch_switch.device_timestamp = 0;
3219         ch_switch.block_tx = params->block_tx;
3220         ch_switch.chandef = params->chandef;
3221         ch_switch.count = params->count;
3222
3223         err = drv_pre_channel_switch(sdata, &ch_switch);
3224         if (err)
3225                 goto out;
3226
3227         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3228                                             chanctx->mode,
3229                                             params->radar_required);
3230         if (err)
3231                 goto out;
3232
3233         /* if reservation is invalid then this will fail */
3234         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3235         if (err) {
3236                 ieee80211_vif_unreserve_chanctx(sdata);
3237                 goto out;
3238         }
3239
3240         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3241         if (err) {
3242                 ieee80211_vif_unreserve_chanctx(sdata);
3243                 goto out;
3244         }
3245
3246         sdata->csa_chandef = params->chandef;
3247         sdata->csa_block_tx = params->block_tx;
3248         sdata->vif.csa_active = true;
3249
3250         if (sdata->csa_block_tx)
3251                 ieee80211_stop_vif_queues(local, sdata,
3252                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3253
3254         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3255                                           params->count);
3256
3257         if (changed) {
3258                 ieee80211_bss_info_change_notify(sdata, changed);
3259                 drv_channel_switch_beacon(sdata, &params->chandef);
3260         } else {
3261                 /* if the beacon didn't change, we can finalize immediately */
3262                 ieee80211_csa_finalize(sdata);
3263         }
3264
3265 out:
3266         mutex_unlock(&local->chanctx_mtx);
3267         return err;
3268 }
3269
3270 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3271                              struct cfg80211_csa_settings *params)
3272 {
3273         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3274         struct ieee80211_local *local = sdata->local;
3275         int err;
3276
3277         mutex_lock(&local->mtx);
3278         err = __ieee80211_channel_switch(wiphy, dev, params);
3279         mutex_unlock(&local->mtx);
3280
3281         return err;
3282 }
3283
3284 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3285 {
3286         lockdep_assert_held(&local->mtx);
3287
3288         local->roc_cookie_counter++;
3289
3290         /* wow, you wrapped 64 bits ... more likely a bug */
3291         if (WARN_ON(local->roc_cookie_counter == 0))
3292                 local->roc_cookie_counter++;
3293
3294         return local->roc_cookie_counter;
3295 }
3296
3297 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3298                              u64 *cookie, gfp_t gfp)
3299 {
3300         unsigned long spin_flags;
3301         struct sk_buff *ack_skb;
3302         int id;
3303
3304         ack_skb = skb_copy(skb, gfp);
3305         if (!ack_skb)
3306                 return -ENOMEM;
3307
3308         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3309         id = idr_alloc(&local->ack_status_frames, ack_skb,
3310                        1, 0x10000, GFP_ATOMIC);
3311         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3312
3313         if (id < 0) {
3314                 kfree_skb(ack_skb);
3315                 return -ENOMEM;
3316         }
3317
3318         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3319
3320         *cookie = ieee80211_mgmt_tx_cookie(local);
3321         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3322
3323         return 0;
3324 }
3325
3326 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3327                                           struct wireless_dev *wdev,
3328                                           u16 frame_type, bool reg)
3329 {
3330         struct ieee80211_local *local = wiphy_priv(wiphy);
3331         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3332
3333         switch (frame_type) {
3334         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3335                 if (reg) {
3336                         local->probe_req_reg++;
3337                         sdata->vif.probe_req_reg++;
3338                 } else {
3339                         if (local->probe_req_reg)
3340                                 local->probe_req_reg--;
3341
3342                         if (sdata->vif.probe_req_reg)
3343                                 sdata->vif.probe_req_reg--;
3344                 }
3345
3346                 if (!local->open_count)
3347                         break;
3348
3349                 if (sdata->vif.probe_req_reg == 1)
3350                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3351                                                 FIF_PROBE_REQ);
3352                 else if (sdata->vif.probe_req_reg == 0)
3353                         drv_config_iface_filter(local, sdata, 0,
3354                                                 FIF_PROBE_REQ);
3355
3356                 ieee80211_configure_filter(local);
3357                 break;
3358         default:
3359                 break;
3360         }
3361 }
3362
3363 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3364 {
3365         struct ieee80211_local *local = wiphy_priv(wiphy);
3366
3367         if (local->started)
3368                 return -EOPNOTSUPP;
3369
3370         return drv_set_antenna(local, tx_ant, rx_ant);
3371 }
3372
3373 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3374 {
3375         struct ieee80211_local *local = wiphy_priv(wiphy);
3376
3377         return drv_get_antenna(local, tx_ant, rx_ant);
3378 }
3379
3380 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3381                                     struct net_device *dev,
3382                                     struct cfg80211_gtk_rekey_data *data)
3383 {
3384         struct ieee80211_local *local = wiphy_priv(wiphy);
3385         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3386
3387         if (!local->ops->set_rekey_data)
3388                 return -EOPNOTSUPP;
3389
3390         drv_set_rekey_data(local, sdata, data);
3391
3392         return 0;
3393 }
3394
3395 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3396                                   const u8 *peer, u64 *cookie)
3397 {
3398         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3399         struct ieee80211_local *local = sdata->local;
3400         struct ieee80211_qos_hdr *nullfunc;
3401         struct sk_buff *skb;
3402         int size = sizeof(*nullfunc);
3403         __le16 fc;
3404         bool qos;
3405         struct ieee80211_tx_info *info;
3406         struct sta_info *sta;
3407         struct ieee80211_chanctx_conf *chanctx_conf;
3408         enum nl80211_band band;
3409         int ret;
3410
3411         /* the lock is needed to assign the cookie later */
3412         mutex_lock(&local->mtx);
3413
3414         rcu_read_lock();
3415         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3416         if (WARN_ON(!chanctx_conf)) {
3417                 ret = -EINVAL;
3418                 goto unlock;
3419         }
3420         band = chanctx_conf->def.chan->band;
3421         sta = sta_info_get_bss(sdata, peer);
3422         if (sta) {
3423                 qos = sta->sta.wme;
3424         } else {
3425                 ret = -ENOLINK;
3426                 goto unlock;
3427         }
3428
3429         if (qos) {
3430                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3431                                  IEEE80211_STYPE_QOS_NULLFUNC |
3432                                  IEEE80211_FCTL_FROMDS);
3433         } else {
3434                 size -= 2;
3435                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3436                                  IEEE80211_STYPE_NULLFUNC |
3437                                  IEEE80211_FCTL_FROMDS);
3438         }
3439
3440         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3441         if (!skb) {
3442                 ret = -ENOMEM;
3443                 goto unlock;
3444         }
3445
3446         skb->dev = dev;
3447
3448         skb_reserve(skb, local->hw.extra_tx_headroom);
3449
3450         nullfunc = skb_put(skb, size);
3451         nullfunc->frame_control = fc;
3452         nullfunc->duration_id = 0;
3453         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3454         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3455         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3456         nullfunc->seq_ctrl = 0;
3457
3458         info = IEEE80211_SKB_CB(skb);
3459
3460         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3461                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3462         info->band = band;
3463
3464         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3465         skb->priority = 7;
3466         if (qos)
3467                 nullfunc->qos_ctrl = cpu_to_le16(7);
3468
3469         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3470         if (ret) {
3471                 kfree_skb(skb);
3472                 goto unlock;
3473         }
3474
3475         local_bh_disable();
3476         ieee80211_xmit(sdata, sta, skb, 0);
3477         local_bh_enable();
3478
3479         ret = 0;
3480 unlock:
3481         rcu_read_unlock();
3482         mutex_unlock(&local->mtx);
3483
3484         return ret;
3485 }
3486
3487 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3488                                      struct wireless_dev *wdev,
3489                                      struct cfg80211_chan_def *chandef)
3490 {
3491         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3492         struct ieee80211_local *local = wiphy_priv(wiphy);
3493         struct ieee80211_chanctx_conf *chanctx_conf;
3494         int ret = -ENODATA;
3495
3496         rcu_read_lock();
3497         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3498         if (chanctx_conf) {
3499                 *chandef = sdata->vif.bss_conf.chandef;
3500                 ret = 0;
3501         } else if (local->open_count > 0 &&
3502                    local->open_count == local->monitors &&
3503                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3504                 if (local->use_chanctx)
3505                         *chandef = local->monitor_chandef;
3506                 else
3507                         *chandef = local->_oper_chandef;
3508                 ret = 0;
3509         }
3510         rcu_read_unlock();
3511
3512         return ret;
3513 }
3514
3515 #ifdef CONFIG_PM
3516 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3517 {
3518         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3519 }
3520 #endif
3521
3522 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3523                                  struct net_device *dev,
3524                                  struct cfg80211_qos_map *qos_map)
3525 {
3526         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3527         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3528
3529         if (qos_map) {
3530                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3531                 if (!new_qos_map)
3532                         return -ENOMEM;
3533                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3534         } else {
3535                 /* A NULL qos_map was passed to disable QoS mapping */
3536                 new_qos_map = NULL;
3537         }
3538
3539         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3540         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3541         if (old_qos_map)
3542                 kfree_rcu(old_qos_map, rcu_head);
3543
3544         return 0;
3545 }
3546
3547 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3548                                       struct net_device *dev,
3549                                       struct cfg80211_chan_def *chandef)
3550 {
3551         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3552         int ret;
3553         u32 changed = 0;
3554
3555         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3556         if (ret == 0)
3557                 ieee80211_bss_info_change_notify(sdata, changed);
3558
3559         return ret;
3560 }
3561
3562 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3563                                u8 tsid, const u8 *peer, u8 up,
3564                                u16 admitted_time)
3565 {
3566         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3567         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3568         int ac = ieee802_1d_to_ac[up];
3569
3570         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3571                 return -EOPNOTSUPP;
3572
3573         if (!(sdata->wmm_acm & BIT(up)))
3574                 return -EINVAL;
3575
3576         if (ifmgd->tx_tspec[ac].admitted_time)
3577                 return -EBUSY;
3578
3579         if (admitted_time) {
3580                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3581                 ifmgd->tx_tspec[ac].tsid = tsid;
3582                 ifmgd->tx_tspec[ac].up = up;
3583         }
3584
3585         return 0;
3586 }
3587
3588 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3589                                u8 tsid, const u8 *peer)
3590 {
3591         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3592         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3593         struct ieee80211_local *local = wiphy_priv(wiphy);
3594         int ac;
3595
3596         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3597                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3598
3599                 /* skip unused entries */
3600                 if (!tx_tspec->admitted_time)
3601                         continue;
3602
3603                 if (tx_tspec->tsid != tsid)
3604                         continue;
3605
3606                 /* due to this new packets will be reassigned to non-ACM ACs */
3607                 tx_tspec->up = -1;
3608
3609                 /* Make sure that all packets have been sent to avoid to
3610                  * restore the QoS params on packets that are still on the
3611                  * queues.
3612                  */
3613                 synchronize_net();
3614                 ieee80211_flush_queues(local, sdata, false);
3615
3616                 /* restore the normal QoS parameters
3617                  * (unconditionally to avoid races)
3618                  */
3619                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3620                 tx_tspec->downgraded = false;
3621                 ieee80211_sta_handle_tspec_ac_params(sdata);
3622
3623                 /* finally clear all the data */
3624                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3625
3626                 return 0;
3627         }
3628
3629         return -ENOENT;
3630 }
3631
3632 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3633                                    u8 inst_id,
3634                                    enum nl80211_nan_func_term_reason reason,
3635                                    gfp_t gfp)
3636 {
3637         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3638         struct cfg80211_nan_func *func;
3639         u64 cookie;
3640
3641         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3642                 return;
3643
3644         spin_lock_bh(&sdata->u.nan.func_lock);
3645
3646         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3647         if (WARN_ON(!func)) {
3648                 spin_unlock_bh(&sdata->u.nan.func_lock);
3649                 return;
3650         }
3651
3652         cookie = func->cookie;
3653         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3654
3655         spin_unlock_bh(&sdata->u.nan.func_lock);
3656
3657         cfg80211_free_nan_func(func);
3658
3659         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3660                                      reason, cookie, gfp);
3661 }
3662 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3663
3664 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3665                               struct cfg80211_nan_match_params *match,
3666                               gfp_t gfp)
3667 {
3668         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3669         struct cfg80211_nan_func *func;
3670
3671         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3672                 return;
3673
3674         spin_lock_bh(&sdata->u.nan.func_lock);
3675
3676         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3677         if (WARN_ON(!func)) {
3678                 spin_unlock_bh(&sdata->u.nan.func_lock);
3679                 return;
3680         }
3681         match->cookie = func->cookie;
3682
3683         spin_unlock_bh(&sdata->u.nan.func_lock);
3684
3685         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3686 }
3687 EXPORT_SYMBOL(ieee80211_nan_func_match);
3688
3689 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3690                                               struct net_device *dev,
3691                                               const bool enabled)
3692 {
3693         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3694
3695         sdata->u.ap.multicast_to_unicast = enabled;
3696
3697         return 0;
3698 }
3699
3700 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats,
3701                               struct txq_info *txqi)
3702 {
3703         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) {
3704                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES);
3705                 txqstats->backlog_bytes = txqi->tin.backlog_bytes;
3706         }
3707
3708         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) {
3709                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS);
3710                 txqstats->backlog_packets = txqi->tin.backlog_packets;
3711         }
3712
3713         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) {
3714                 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS);
3715                 txqstats->flows = txqi->tin.flows;
3716         }
3717
3718         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) {
3719                 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS);
3720                 txqstats->drops = txqi->cstats.drop_count;
3721         }
3722
3723         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) {
3724                 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS);
3725                 txqstats->ecn_marks = txqi->cstats.ecn_mark;
3726         }
3727
3728         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) {
3729                 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT);
3730                 txqstats->overlimit = txqi->tin.overlimit;
3731         }
3732
3733         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) {
3734                 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS);
3735                 txqstats->collisions = txqi->tin.collisions;
3736         }
3737
3738         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) {
3739                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES);
3740                 txqstats->tx_bytes = txqi->tin.tx_bytes;
3741         }
3742
3743         if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) {
3744                 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS);
3745                 txqstats->tx_packets = txqi->tin.tx_packets;
3746         }
3747 }
3748
3749 static int ieee80211_get_txq_stats(struct wiphy *wiphy,
3750                                    struct wireless_dev *wdev,
3751                                    struct cfg80211_txq_stats *txqstats)
3752 {
3753         struct ieee80211_local *local = wiphy_priv(wiphy);
3754         struct ieee80211_sub_if_data *sdata;
3755         int ret = 0;
3756
3757         if (!local->ops->wake_tx_queue)
3758                 return 1;
3759
3760         spin_lock_bh(&local->fq.lock);
3761         rcu_read_lock();
3762
3763         if (wdev) {
3764                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3765                 if (!sdata->vif.txq) {
3766                         ret = 1;
3767                         goto out;
3768                 }
3769                 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq));
3770         } else {
3771                 /* phy stats */
3772                 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) |
3773                                     BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) |
3774                                     BIT(NL80211_TXQ_STATS_OVERLIMIT) |
3775                                     BIT(NL80211_TXQ_STATS_OVERMEMORY) |
3776                                     BIT(NL80211_TXQ_STATS_COLLISIONS) |
3777                                     BIT(NL80211_TXQ_STATS_MAX_FLOWS);
3778                 txqstats->backlog_packets = local->fq.backlog;
3779                 txqstats->backlog_bytes = local->fq.memory_usage;
3780                 txqstats->overlimit = local->fq.overlimit;
3781                 txqstats->overmemory = local->fq.overmemory;
3782                 txqstats->collisions = local->fq.collisions;
3783                 txqstats->max_flows = local->fq.flows_cnt;
3784         }
3785
3786 out:
3787         rcu_read_unlock();
3788         spin_unlock_bh(&local->fq.lock);
3789
3790         return ret;
3791 }
3792
3793 const struct cfg80211_ops mac80211_config_ops = {
3794         .add_virtual_intf = ieee80211_add_iface,
3795         .del_virtual_intf = ieee80211_del_iface,
3796         .change_virtual_intf = ieee80211_change_iface,
3797         .start_p2p_device = ieee80211_start_p2p_device,
3798         .stop_p2p_device = ieee80211_stop_p2p_device,
3799         .add_key = ieee80211_add_key,
3800         .del_key = ieee80211_del_key,
3801         .get_key = ieee80211_get_key,
3802         .set_default_key = ieee80211_config_default_key,
3803         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3804         .start_ap = ieee80211_start_ap,
3805         .change_beacon = ieee80211_change_beacon,
3806         .stop_ap = ieee80211_stop_ap,
3807         .add_station = ieee80211_add_station,
3808         .del_station = ieee80211_del_station,
3809         .change_station = ieee80211_change_station,
3810         .get_station = ieee80211_get_station,
3811         .dump_station = ieee80211_dump_station,
3812         .dump_survey = ieee80211_dump_survey,
3813 #ifdef CONFIG_MAC80211_MESH
3814         .add_mpath = ieee80211_add_mpath,
3815         .del_mpath = ieee80211_del_mpath,
3816         .change_mpath = ieee80211_change_mpath,
3817         .get_mpath = ieee80211_get_mpath,
3818         .dump_mpath = ieee80211_dump_mpath,
3819         .get_mpp = ieee80211_get_mpp,
3820         .dump_mpp = ieee80211_dump_mpp,
3821         .update_mesh_config = ieee80211_update_mesh_config,
3822         .get_mesh_config = ieee80211_get_mesh_config,
3823         .join_mesh = ieee80211_join_mesh,
3824         .leave_mesh = ieee80211_leave_mesh,
3825 #endif
3826         .join_ocb = ieee80211_join_ocb,
3827         .leave_ocb = ieee80211_leave_ocb,
3828         .change_bss = ieee80211_change_bss,
3829         .set_txq_params = ieee80211_set_txq_params,
3830         .set_monitor_channel = ieee80211_set_monitor_channel,
3831         .suspend = ieee80211_suspend,
3832         .resume = ieee80211_resume,
3833         .scan = ieee80211_scan,
3834         .abort_scan = ieee80211_abort_scan,
3835         .sched_scan_start = ieee80211_sched_scan_start,
3836         .sched_scan_stop = ieee80211_sched_scan_stop,
3837         .auth = ieee80211_auth,
3838         .assoc = ieee80211_assoc,
3839         .deauth = ieee80211_deauth,
3840         .disassoc = ieee80211_disassoc,
3841         .join_ibss = ieee80211_join_ibss,
3842         .leave_ibss = ieee80211_leave_ibss,
3843         .set_mcast_rate = ieee80211_set_mcast_rate,
3844         .set_wiphy_params = ieee80211_set_wiphy_params,
3845         .set_tx_power = ieee80211_set_tx_power,
3846         .get_tx_power = ieee80211_get_tx_power,
3847         .set_wds_peer = ieee80211_set_wds_peer,
3848         .rfkill_poll = ieee80211_rfkill_poll,
3849         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3850         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3851         .set_power_mgmt = ieee80211_set_power_mgmt,
3852         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3853         .remain_on_channel = ieee80211_remain_on_channel,
3854         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3855         .mgmt_tx = ieee80211_mgmt_tx,
3856         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3857         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3858         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3859         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3860         .set_antenna = ieee80211_set_antenna,
3861         .get_antenna = ieee80211_get_antenna,
3862         .set_rekey_data = ieee80211_set_rekey_data,
3863         .tdls_oper = ieee80211_tdls_oper,
3864         .tdls_mgmt = ieee80211_tdls_mgmt,
3865         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3866         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3867         .probe_client = ieee80211_probe_client,
3868         .set_noack_map = ieee80211_set_noack_map,
3869 #ifdef CONFIG_PM
3870         .set_wakeup = ieee80211_set_wakeup,
3871 #endif
3872         .get_channel = ieee80211_cfg_get_channel,
3873         .start_radar_detection = ieee80211_start_radar_detection,
3874         .end_cac = ieee80211_end_cac,
3875         .channel_switch = ieee80211_channel_switch,
3876         .set_qos_map = ieee80211_set_qos_map,
3877         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3878         .add_tx_ts = ieee80211_add_tx_ts,
3879         .del_tx_ts = ieee80211_del_tx_ts,
3880         .start_nan = ieee80211_start_nan,
3881         .stop_nan = ieee80211_stop_nan,
3882         .nan_change_conf = ieee80211_nan_change_conf,
3883         .add_nan_func = ieee80211_add_nan_func,
3884         .del_nan_func = ieee80211_del_nan_func,
3885         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3886         .tx_control_port = ieee80211_tx_control_port,
3887         .get_txq_stats = ieee80211_get_txq_stats,
3888 };