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  *
   8  * This file is GPLv2 as found in COPYING.
   9  */
  10
  11 #include <linux/ieee80211.h>
  12 #include <linux/nl80211.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/slab.h>
  15 #include <net/net_namespace.h>
  16 #include <linux/rcupdate.h>
  17 #include <linux/if_ether.h>
  18 #include <net/cfg80211.h>
  19 #include "ieee80211_i.h"
  20 #include "driver-ops.h"
  21 #include "rate.h"
  22 #include "mesh.h"
  23 #include "wme.h"
  24
  25 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata,
  26                                          struct vif_params *params)
  27 {
  28         bool mu_mimo_groups = false;
  29         bool mu_mimo_follow = false;
  30
  31         if (params->vht_mumimo_groups) {
  32                 u64 membership;
  33
  34                 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN);
  35
  36                 memcpy(sdata->vif.bss_conf.mu_group.membership,
  37                        params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN);
  38                 memcpy(sdata->vif.bss_conf.mu_group.position,
  39                        params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN,
  40                        WLAN_USER_POSITION_LEN);
  41                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS);
  42                 /* don't care about endianness - just check for 0 */
  43                 memcpy(&membership, params->vht_mumimo_groups,
  44                        WLAN_MEMBERSHIP_LEN);
  45                 mu_mimo_groups = membership != 0;
  46         }
  47
  48         if (params->vht_mumimo_follow_addr) {
  49                 mu_mimo_follow =
  50                         is_valid_ether_addr(params->vht_mumimo_follow_addr);
  51                 ether_addr_copy(sdata->u.mntr.mu_follow_addr,
  52                                 params->vht_mumimo_follow_addr);
  53         }
  54
  55         sdata->vif.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow;
  56 }
  57
  58 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata,
  59                                      struct vif_params *params)
  60 {
  61         struct ieee80211_local *local = sdata->local;
  62         struct ieee80211_sub_if_data *monitor_sdata;
  63
  64         /* check flags first */
  65         if (params->flags && ieee80211_sdata_running(sdata)) {
  66                 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE;
  67
  68                 /*
  69                  * Prohibit MONITOR_FLAG_COOK_FRAMES and
  70                  * MONITOR_FLAG_ACTIVE to be changed while the
  71                  * interface is up.
  72                  * Else we would need to add a lot of cruft
  73                  * to update everything:
  74                  *      cooked_mntrs, monitor and all fif_* counters
  75                  *      reconfigure hardware
  76                  */
  77                 if ((params->flags & mask) != (sdata->u.mntr.flags & mask))
  78                         return -EBUSY;
  79         }
  80
  81         /* also validate MU-MIMO change */
  82         monitor_sdata = rtnl_dereference(local->monitor_sdata);
  83
  84         if (!monitor_sdata &&
  85             (params->vht_mumimo_groups || params->vht_mumimo_follow_addr))
  86                 return -EOPNOTSUPP;
  87
  88         /* apply all changes now - no failures allowed */
  89
  90         if (monitor_sdata)
  91                 ieee80211_set_mu_mimo_follow(monitor_sdata, params);
  92
  93         if (params->flags) {
  94                 if (ieee80211_sdata_running(sdata)) {
  95                         ieee80211_adjust_monitor_flags(sdata, -1);
  96                         sdata->u.mntr.flags = params->flags;
  97                         ieee80211_adjust_monitor_flags(sdata, 1);
  98
  99                         ieee80211_configure_filter(local);
 100                 } else {
 101                         /*
 102                          * Because the interface is down, ieee80211_do_stop
 103                          * and ieee80211_do_open take care of "everything"
 104                          * mentioned in the comment above.
 105                          */
 106                         sdata->u.mntr.flags = params->flags;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
 114                                                 const char *name,
 115                                                 unsigned char name_assign_type,
 116                                                 enum nl80211_iftype type,
 117                                                 struct vif_params *params)
 118 {
 119         struct ieee80211_local *local = wiphy_priv(wiphy);
 120         struct wireless_dev *wdev;
 121         struct ieee80211_sub_if_data *sdata;
 122         int err;
 123
 124         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
 125         if (err)
 126                 return ERR_PTR(err);
 127
 128         sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 129
 130         if (type == NL80211_IFTYPE_MONITOR) {
 131                 err = ieee80211_set_mon_options(sdata, params);
 132                 if (err) {
 133                         ieee80211_if_remove(sdata);
 134                         return NULL;
 135                 }
 136         }
 137
 138         return wdev;
 139 }
 140
 141 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
 142 {
 143         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
 144
 145         return 0;
 146 }
 147
 148 static int ieee80211_change_iface(struct wiphy *wiphy,
 149                                   struct net_device *dev,
 150                                   enum nl80211_iftype type,
 151                                   struct vif_params *params)
 152 {
 153         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 154         int ret;
 155
 156         ret = ieee80211_if_change_type(sdata, type);
 157         if (ret)
 158                 return ret;
 159
 160         if (type == NL80211_IFTYPE_AP_VLAN &&
 161             params && params->use_4addr == 0) {
 162                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
 163                 ieee80211_check_fast_rx_iface(sdata);
 164         } else if (type == NL80211_IFTYPE_STATION &&
 165                    params && params->use_4addr >= 0) {
 166                 sdata->u.mgd.use_4addr = params->use_4addr;
 167         }
 168
 169         if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 170                 ret = ieee80211_set_mon_options(sdata, params);
 171                 if (ret)
 172                         return ret;
 173         }
 174
 175         return 0;
 176 }
 177
 178 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 179                                       struct wireless_dev *wdev)
 180 {
 181         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 182         int ret;
 183
 184         mutex_lock(&sdata->local->chanctx_mtx);
 185         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 186         mutex_unlock(&sdata->local->chanctx_mtx);
 187         if (ret < 0)
 188                 return ret;
 189
 190         return ieee80211_do_open(wdev, true);
 191 }
 192
 193 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 194                                       struct wireless_dev *wdev)
 195 {
 196         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 197 }
 198
 199 static int ieee80211_start_nan(struct wiphy *wiphy,
 200                                struct wireless_dev *wdev,
 201                                struct cfg80211_nan_conf *conf)
 202 {
 203         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 204         int ret;
 205
 206         mutex_lock(&sdata->local->chanctx_mtx);
 207         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 208         mutex_unlock(&sdata->local->chanctx_mtx);
 209         if (ret < 0)
 210                 return ret;
 211
 212         ret = ieee80211_do_open(wdev, true);
 213         if (ret)
 214                 return ret;
 215
 216         ret = drv_start_nan(sdata->local, sdata, conf);
 217         if (ret)
 218                 ieee80211_sdata_stop(sdata);
 219
 220         sdata->u.nan.conf = *conf;
 221
 222         return ret;
 223 }
 224
 225 static void ieee80211_stop_nan(struct wiphy *wiphy,
 226                                struct wireless_dev *wdev)
 227 {
 228         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 229
 230         drv_stop_nan(sdata->local, sdata);
 231         ieee80211_sdata_stop(sdata);
 232 }
 233
 234 static int ieee80211_nan_change_conf(struct wiphy *wiphy,
 235                                      struct wireless_dev *wdev,
 236                                      struct cfg80211_nan_conf *conf,
 237                                      u32 changes)
 238 {
 239         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 240         struct cfg80211_nan_conf new_conf;
 241         int ret = 0;
 242
 243         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 244                 return -EOPNOTSUPP;
 245
 246         if (!ieee80211_sdata_running(sdata))
 247                 return -ENETDOWN;
 248
 249         new_conf = sdata->u.nan.conf;
 250
 251         if (changes & CFG80211_NAN_CONF_CHANGED_PREF)
 252                 new_conf.master_pref = conf->master_pref;
 253
 254         if (changes & CFG80211_NAN_CONF_CHANGED_BANDS)
 255                 new_conf.bands = conf->bands;
 256
 257         ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes);
 258         if (!ret)
 259                 sdata->u.nan.conf = new_conf;
 260
 261         return ret;
 262 }
 263
 264 static int ieee80211_add_nan_func(struct wiphy *wiphy,
 265                                   struct wireless_dev *wdev,
 266                                   struct cfg80211_nan_func *nan_func)
 267 {
 268         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 269         int ret;
 270
 271         if (sdata->vif.type != NL80211_IFTYPE_NAN)
 272                 return -EOPNOTSUPP;
 273
 274         if (!ieee80211_sdata_running(sdata))
 275                 return -ENETDOWN;
 276
 277         spin_lock_bh(&sdata->u.nan.func_lock);
 278
 279         ret = idr_alloc(&sdata->u.nan.function_inst_ids,
 280                         nan_func, 1, sdata->local->hw.max_nan_de_entries + 1,
 281                         GFP_ATOMIC);
 282         spin_unlock_bh(&sdata->u.nan.func_lock);
 283
 284         if (ret < 0)
 285                 return ret;
 286
 287         nan_func->instance_id = ret;
 288
 289         WARN_ON(nan_func->instance_id == 0);
 290
 291         ret = drv_add_nan_func(sdata->local, sdata, nan_func);
 292         if (ret) {
 293                 spin_lock_bh(&sdata->u.nan.func_lock);
 294                 idr_remove(&sdata->u.nan.function_inst_ids,
 295                            nan_func->instance_id);
 296                 spin_unlock_bh(&sdata->u.nan.func_lock);
 297         }
 298
 299         return ret;
 300 }
 301
 302 static struct cfg80211_nan_func *
 303 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata,
 304                                   u64 cookie)
 305 {
 306         struct cfg80211_nan_func *func;
 307         int id;
 308
 309         lockdep_assert_held(&sdata->u.nan.func_lock);
 310
 311         idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) {
 312                 if (func->cookie == cookie)
 313                         return func;
 314         }
 315
 316         return NULL;
 317 }
 318
 319 static void ieee80211_del_nan_func(struct wiphy *wiphy,
 320                                   struct wireless_dev *wdev, u64 cookie)
 321 {
 322         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 323         struct cfg80211_nan_func *func;
 324         u8 instance_id = 0;
 325
 326         if (sdata->vif.type != NL80211_IFTYPE_NAN ||
 327             !ieee80211_sdata_running(sdata))
 328                 return;
 329
 330         spin_lock_bh(&sdata->u.nan.func_lock);
 331
 332         func = ieee80211_find_nan_func_by_cookie(sdata, cookie);
 333         if (func)
 334                 instance_id = func->instance_id;
 335
 336         spin_unlock_bh(&sdata->u.nan.func_lock);
 337
 338         if (instance_id)
 339                 drv_del_nan_func(sdata->local, sdata, instance_id);
 340 }
 341
 342 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 343                                   struct net_device *dev,
 344                                   u16 noack_map)
 345 {
 346         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 347
 348         sdata->noack_map = noack_map;
 349
 350         ieee80211_check_fast_xmit_iface(sdata);
 351
 352         return 0;
 353 }
 354
 355 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 356                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 357                              struct key_params *params)
 358 {
 359         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 360         struct ieee80211_local *local = sdata->local;
 361         struct sta_info *sta = NULL;
 362         const struct ieee80211_cipher_scheme *cs = NULL;
 363         struct ieee80211_key *key;
 364         int err;
 365
 366         if (!ieee80211_sdata_running(sdata))
 367                 return -ENETDOWN;
 368
 369         /* reject WEP and TKIP keys if WEP failed to initialize */
 370         switch (params->cipher) {
 371         case WLAN_CIPHER_SUITE_WEP40:
 372         case WLAN_CIPHER_SUITE_TKIP:
 373         case WLAN_CIPHER_SUITE_WEP104:
 374                 if (IS_ERR(local->wep_tx_tfm))
 375                         return -EINVAL;
 376                 break;
 377         case WLAN_CIPHER_SUITE_CCMP:
 378         case WLAN_CIPHER_SUITE_CCMP_256:
 379         case WLAN_CIPHER_SUITE_AES_CMAC:
 380         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 381         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 382         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 383         case WLAN_CIPHER_SUITE_GCMP:
 384         case WLAN_CIPHER_SUITE_GCMP_256:
 385                 break;
 386         default:
 387                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 388                 break;
 389         }
 390
 391         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 392                                   params->key, params->seq_len, params->seq,
 393                                   cs);
 394         if (IS_ERR(key))
 395                 return PTR_ERR(key);
 396
 397         if (pairwise)
 398                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 399
 400         mutex_lock(&local->sta_mtx);
 401
 402         if (mac_addr) {
 403                 sta = sta_info_get_bss(sdata, mac_addr);
 404                 /*
 405                  * The ASSOC test makes sure the driver is ready to
 406                  * receive the key. When wpa_supplicant has roamed
 407                  * using FT, it attempts to set the key before
 408                  * association has completed, this rejects that attempt
 409                  * so it will set the key again after association.
 410                  *
 411                  * TODO: accept the key if we have a station entry and
 412                  *       add it to the device after the station.
 413                  */
 414                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 415                         ieee80211_key_free_unused(key);
 416                         err = -ENOENT;
 417                         goto out_unlock;
 418                 }
 419         }
 420
 421         switch (sdata->vif.type) {
 422         case NL80211_IFTYPE_STATION:
 423                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 424                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 425                 break;
 426         case NL80211_IFTYPE_AP:
 427         case NL80211_IFTYPE_AP_VLAN:
 428                 /* Keys without a station are used for TX only */
 429                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 430                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 431                 break;
 432         case NL80211_IFTYPE_ADHOC:
 433                 /* no MFP (yet) */
 434                 break;
 435         case NL80211_IFTYPE_MESH_POINT:
 436 #ifdef CONFIG_MAC80211_MESH
 437                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 438                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 439                 break;
 440 #endif
 441         case NL80211_IFTYPE_WDS:
 442         case NL80211_IFTYPE_MONITOR:
 443         case NL80211_IFTYPE_P2P_DEVICE:
 444         case NL80211_IFTYPE_NAN:
 445         case NL80211_IFTYPE_UNSPECIFIED:
 446         case NUM_NL80211_IFTYPES:
 447         case NL80211_IFTYPE_P2P_CLIENT:
 448         case NL80211_IFTYPE_P2P_GO:
 449         case NL80211_IFTYPE_OCB:
 450                 /* shouldn't happen */
 451                 WARN_ON_ONCE(1);
 452                 break;
 453         }
 454
 455         if (sta)
 456                 sta->cipher_scheme = cs;
 457
 458         err = ieee80211_key_link(key, sdata, sta);
 459
 460  out_unlock:
 461         mutex_unlock(&local->sta_mtx);
 462
 463         return err;
 464 }
 465
 466 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 467                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 468 {
 469         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 470         struct ieee80211_local *local = sdata->local;
 471         struct sta_info *sta;
 472         struct ieee80211_key *key = NULL;
 473         int ret;
 474
 475         mutex_lock(&local->sta_mtx);
 476         mutex_lock(&local->key_mtx);
 477
 478         if (mac_addr) {
 479                 ret = -ENOENT;
 480
 481                 sta = sta_info_get_bss(sdata, mac_addr);
 482                 if (!sta)
 483                         goto out_unlock;
 484
 485                 if (pairwise)
 486                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 487                 else
 488                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 489         } else
 490                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 491
 492         if (!key) {
 493                 ret = -ENOENT;
 494                 goto out_unlock;
 495         }
 496
 497         ieee80211_key_free(key, true);
 498
 499         ret = 0;
 500  out_unlock:
 501         mutex_unlock(&local->key_mtx);
 502         mutex_unlock(&local->sta_mtx);
 503
 504         return ret;
 505 }
 506
 507 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 508                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 509                              void *cookie,
 510                              void (*callback)(void *cookie,
 511                                               struct key_params *params))
 512 {
 513         struct ieee80211_sub_if_data *sdata;
 514         struct sta_info *sta = NULL;
 515         u8 seq[6] = {0};
 516         struct key_params params;
 517         struct ieee80211_key *key = NULL;
 518         u64 pn64;
 519         u32 iv32;
 520         u16 iv16;
 521         int err = -ENOENT;
 522         struct ieee80211_key_seq kseq = {};
 523
 524         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 525
 526         rcu_read_lock();
 527
 528         if (mac_addr) {
 529                 sta = sta_info_get_bss(sdata, mac_addr);
 530                 if (!sta)
 531                         goto out;
 532
 533                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 534                         key = rcu_dereference(sta->ptk[key_idx]);
 535                 else if (!pairwise &&
 536                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 537                         key = rcu_dereference(sta->gtk[key_idx]);
 538         } else
 539                 key = rcu_dereference(sdata->keys[key_idx]);
 540
 541         if (!key)
 542                 goto out;
 543
 544         memset(&params, 0, sizeof(params));
 545
 546         params.cipher = key->conf.cipher;
 547
 548         switch (key->conf.cipher) {
 549         case WLAN_CIPHER_SUITE_TKIP:
 550                 pn64 = atomic64_read(&key->conf.tx_pn);
 551                 iv32 = TKIP_PN_TO_IV32(pn64);
 552                 iv16 = TKIP_PN_TO_IV16(pn64);
 553
 554                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 555                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 556                         drv_get_key_seq(sdata->local, key, &kseq);
 557                         iv32 = kseq.tkip.iv32;
 558                         iv16 = kseq.tkip.iv16;
 559                 }
 560
 561                 seq[0] = iv16 & 0xff;
 562                 seq[1] = (iv16 >> 8) & 0xff;
 563                 seq[2] = iv32 & 0xff;
 564                 seq[3] = (iv32 >> 8) & 0xff;
 565                 seq[4] = (iv32 >> 16) & 0xff;
 566                 seq[5] = (iv32 >> 24) & 0xff;
 567                 params.seq = seq;
 568                 params.seq_len = 6;
 569                 break;
 570         case WLAN_CIPHER_SUITE_CCMP:
 571         case WLAN_CIPHER_SUITE_CCMP_256:
 572         case WLAN_CIPHER_SUITE_AES_CMAC:
 573         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 574                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 575                              offsetof(typeof(kseq), aes_cmac));
 576                 /* fall through */
 577         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 578         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 579                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 580                              offsetof(typeof(kseq), aes_gmac));
 581                 /* fall through */
 582         case WLAN_CIPHER_SUITE_GCMP:
 583         case WLAN_CIPHER_SUITE_GCMP_256:
 584                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 585                              offsetof(typeof(kseq), gcmp));
 586
 587                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 588                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 589                         drv_get_key_seq(sdata->local, key, &kseq);
 590                         memcpy(seq, kseq.ccmp.pn, 6);
 591                 } else {
 592                         pn64 = atomic64_read(&key->conf.tx_pn);
 593                         seq[0] = pn64;
 594                         seq[1] = pn64 >> 8;
 595                         seq[2] = pn64 >> 16;
 596                         seq[3] = pn64 >> 24;
 597                         seq[4] = pn64 >> 32;
 598                         seq[5] = pn64 >> 40;
 599                 }
 600                 params.seq = seq;
 601                 params.seq_len = 6;
 602                 break;
 603         default:
 604                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 605                         break;
 606                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 607                         break;
 608                 drv_get_key_seq(sdata->local, key, &kseq);
 609                 params.seq = kseq.hw.seq;
 610                 params.seq_len = kseq.hw.seq_len;
 611                 break;
 612         }
 613
 614         params.key = key->conf.key;
 615         params.key_len = key->conf.keylen;
 616
 617         callback(cookie, &params);
 618         err = 0;
 619
 620  out:
 621         rcu_read_unlock();
 622         return err;
 623 }
 624
 625 static int ieee80211_config_default_key(struct wiphy *wiphy,
 626                                         struct net_device *dev,
 627                                         u8 key_idx, bool uni,
 628                                         bool multi)
 629 {
 630         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 631
 632         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 633
 634         return 0;
 635 }
 636
 637 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 638                                              struct net_device *dev,
 639                                              u8 key_idx)
 640 {
 641         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 642
 643         ieee80211_set_default_mgmt_key(sdata, key_idx);
 644
 645         return 0;
 646 }
 647
 648 void sta_set_rate_info_tx(struct sta_info *sta,
 649                           const struct ieee80211_tx_rate *rate,
 650                           struct rate_info *rinfo)
 651 {
 652         rinfo->flags = 0;
 653         if (rate->flags & IEEE80211_TX_RC_MCS) {
 654                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 655                 rinfo->mcs = rate->idx;
 656         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 657                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 658                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 659                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 660         } else {
 661                 struct ieee80211_supported_band *sband;
 662                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 663                 u16 brate;
 664
 665                 sband = ieee80211_get_sband(sta->sdata);
 666                 if (sband) {
 667                         brate = sband->bitrates[rate->idx].bitrate;
 668                         rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 669                 }
 670         }
 671         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 672                 rinfo->bw = RATE_INFO_BW_40;
 673         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 674                 rinfo->bw = RATE_INFO_BW_80;
 675         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 676                 rinfo->bw = RATE_INFO_BW_160;
 677         else
 678                 rinfo->bw = RATE_INFO_BW_20;
 679         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 680                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 681 }
 682
 683 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 684                                   int idx, u8 *mac, struct station_info *sinfo)
 685 {
 686         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 687         struct ieee80211_local *local = sdata->local;
 688         struct sta_info *sta;
 689         int ret = -ENOENT;
 690
 691         mutex_lock(&local->sta_mtx);
 692
 693         sta = sta_info_get_by_idx(sdata, idx);
 694         if (sta) {
 695                 ret = 0;
 696                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 697                 sta_set_sinfo(sta, sinfo);
 698         }
 699
 700         mutex_unlock(&local->sta_mtx);
 701
 702         return ret;
 703 }
 704
 705 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 706                                  int idx, struct survey_info *survey)
 707 {
 708         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 709
 710         return drv_get_survey(local, idx, survey);
 711 }
 712
 713 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 714                                  const u8 *mac, struct station_info *sinfo)
 715 {
 716         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 717         struct ieee80211_local *local = sdata->local;
 718         struct sta_info *sta;
 719         int ret = -ENOENT;
 720
 721         mutex_lock(&local->sta_mtx);
 722
 723         sta = sta_info_get_bss(sdata, mac);
 724         if (sta) {
 725                 ret = 0;
 726                 sta_set_sinfo(sta, sinfo);
 727         }
 728
 729         mutex_unlock(&local->sta_mtx);
 730
 731         return ret;
 732 }
 733
 734 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 735                                          struct cfg80211_chan_def *chandef)
 736 {
 737         struct ieee80211_local *local = wiphy_priv(wiphy);
 738         struct ieee80211_sub_if_data *sdata;
 739         int ret = 0;
 740
 741         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 742                 return 0;
 743
 744         mutex_lock(&local->mtx);
 745         if (local->use_chanctx) {
 746                 sdata = rtnl_dereference(local->monitor_sdata);
 747                 if (sdata) {
 748                         ieee80211_vif_release_channel(sdata);
 749                         ret = ieee80211_vif_use_channel(sdata, chandef,
 750                                         IEEE80211_CHANCTX_EXCLUSIVE);
 751                 }
 752         } else if (local->open_count == local->monitors) {
 753                 local->_oper_chandef = *chandef;
 754                 ieee80211_hw_config(local, 0);
 755         }
 756
 757         if (ret == 0)
 758                 local->monitor_chandef = *chandef;
 759         mutex_unlock(&local->mtx);
 760
 761         return ret;
 762 }
 763
 764 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 765                                     const u8 *resp, size_t resp_len,
 766                                     const struct ieee80211_csa_settings *csa)
 767 {
 768         struct probe_resp *new, *old;
 769
 770         if (!resp || !resp_len)
 771                 return 1;
 772
 773         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 774
 775         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 776         if (!new)
 777                 return -ENOMEM;
 778
 779         new->len = resp_len;
 780         memcpy(new->data, resp, resp_len);
 781
 782         if (csa)
 783                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 784                        csa->n_counter_offsets_presp *
 785                        sizeof(new->csa_counter_offsets[0]));
 786
 787         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 788         if (old)
 789                 kfree_rcu(old, rcu_head);
 790
 791         return 0;
 792 }
 793
 794 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 795                                    struct cfg80211_beacon_data *params,
 796                                    const struct ieee80211_csa_settings *csa)
 797 {
 798         struct beacon_data *new, *old;
 799         int new_head_len, new_tail_len;
 800         int size, err;
 801         u32 changed = BSS_CHANGED_BEACON;
 802
 803         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 804
 805
 806         /* Need to have a beacon head if we don't have one yet */
 807         if (!params->head && !old)
 808                 return -EINVAL;
 809
 810         /* new or old head? */
 811         if (params->head)
 812                 new_head_len = params->head_len;
 813         else
 814                 new_head_len = old->head_len;
 815
 816         /* new or old tail? */
 817         if (params->tail || !old)
 818                 /* params->tail_len will be zero for !params->tail */
 819                 new_tail_len = params->tail_len;
 820         else
 821                 new_tail_len = old->tail_len;
 822
 823         size = sizeof(*new) + new_head_len + new_tail_len;
 824
 825         new = kzalloc(size, GFP_KERNEL);
 826         if (!new)
 827                 return -ENOMEM;
 828
 829         /* start filling the new info now */
 830
 831         /*
 832          * pointers go into the block we allocated,
 833          * memory is | beacon_data | head | tail |
 834          */
 835         new->head = ((u8 *) new) + sizeof(*new);
 836         new->tail = new->head + new_head_len;
 837         new->head_len = new_head_len;
 838         new->tail_len = new_tail_len;
 839
 840         if (csa) {
 841                 new->csa_current_counter = csa->count;
 842                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 843                        csa->n_counter_offsets_beacon *
 844                        sizeof(new->csa_counter_offsets[0]));
 845         }
 846
 847         /* copy in head */
 848         if (params->head)
 849                 memcpy(new->head, params->head, new_head_len);
 850         else
 851                 memcpy(new->head, old->head, new_head_len);
 852
 853         /* copy in optional tail */
 854         if (params->tail)
 855                 memcpy(new->tail, params->tail, new_tail_len);
 856         else
 857                 if (old)
 858                         memcpy(new->tail, old->tail, new_tail_len);
 859
 860         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 861                                        params->probe_resp_len, csa);
 862         if (err < 0)
 863                 return err;
 864         if (err == 0)
 865                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 866
 867         rcu_assign_pointer(sdata->u.ap.beacon, new);
 868
 869         if (old)
 870                 kfree_rcu(old, rcu_head);
 871
 872         return changed;
 873 }
 874
 875 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 876                               struct cfg80211_ap_settings *params)
 877 {
 878         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 879         struct ieee80211_local *local = sdata->local;
 880         struct beacon_data *old;
 881         struct ieee80211_sub_if_data *vlan;
 882         u32 changed = BSS_CHANGED_BEACON_INT |
 883                       BSS_CHANGED_BEACON_ENABLED |
 884                       BSS_CHANGED_BEACON |
 885                       BSS_CHANGED_SSID |
 886                       BSS_CHANGED_P2P_PS |
 887                       BSS_CHANGED_TXPOWER;
 888         int err;
 889
 890         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 891         if (old)
 892                 return -EALREADY;
 893
 894         switch (params->smps_mode) {
 895         case NL80211_SMPS_OFF:
 896                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 897                 break;
 898         case NL80211_SMPS_STATIC:
 899                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 900                 break;
 901         case NL80211_SMPS_DYNAMIC:
 902                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 903                 break;
 904         default:
 905                 return -EINVAL;
 906         }
 907         sdata->u.ap.req_smps = sdata->smps_mode;
 908
 909         sdata->needed_rx_chains = sdata->local->rx_chains;
 910
 911         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 912
 913         mutex_lock(&local->mtx);
 914         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 915                                         IEEE80211_CHANCTX_SHARED);
 916         if (!err)
 917                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 918         mutex_unlock(&local->mtx);
 919         if (err)
 920                 return err;
 921
 922         /*
 923          * Apply control port protocol, this allows us to
 924          * not encrypt dynamic WEP control frames.
 925          */
 926         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 927         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 928         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 929                                                         &params->crypto,
 930                                                         sdata->vif.type);
 931
 932         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 933                 vlan->control_port_protocol =
 934                         params->crypto.control_port_ethertype;
 935                 vlan->control_port_no_encrypt =
 936                         params->crypto.control_port_no_encrypt;
 937                 vlan->encrypt_headroom =
 938                         ieee80211_cs_headroom(sdata->local,
 939                                               &params->crypto,
 940                                               vlan->vif.type);
 941         }
 942
 943         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 944         sdata->vif.bss_conf.enable_beacon = true;
 945         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 946
 947         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 948         if (params->ssid_len)
 949                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 950                        params->ssid_len);
 951         sdata->vif.bss_conf.hidden_ssid =
 952                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 953
 954         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 955                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 956         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 957                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 958         if (params->p2p_opp_ps)
 959                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 960                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 961
 962         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 963         if (err < 0) {
 964                 ieee80211_vif_release_channel(sdata);
 965                 return err;
 966         }
 967         changed |= err;
 968
 969         err = drv_start_ap(sdata->local, sdata);
 970         if (err) {
 971                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 972
 973                 if (old)
 974                         kfree_rcu(old, rcu_head);
 975                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 976                 ieee80211_vif_release_channel(sdata);
 977                 return err;
 978         }
 979
 980         ieee80211_recalc_dtim(local, sdata);
 981         ieee80211_bss_info_change_notify(sdata, changed);
 982
 983         netif_carrier_on(dev);
 984         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 985                 netif_carrier_on(vlan->dev);
 986
 987         return 0;
 988 }
 989
 990 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 991                                    struct cfg80211_beacon_data *params)
 992 {
 993         struct ieee80211_sub_if_data *sdata;
 994         struct beacon_data *old;
 995         int err;
 996
 997         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 998         sdata_assert_lock(sdata);
 999
1000         /* don't allow changing the beacon while CSA is in place - offset
1001          * of channel switch counter may change
1002          */
1003         if (sdata->vif.csa_active)
1004                 return -EBUSY;
1005
1006         old = sdata_dereference(sdata->u.ap.beacon, sdata);
1007         if (!old)
1008                 return -ENOENT;
1009
1010         err = ieee80211_assign_beacon(sdata, params, NULL);
1011         if (err < 0)
1012                 return err;
1013         ieee80211_bss_info_change_notify(sdata, err);
1014         return 0;
1015 }
1016
1017 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
1018 {
1019         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1020         struct ieee80211_sub_if_data *vlan;
1021         struct ieee80211_local *local = sdata->local;
1022         struct beacon_data *old_beacon;
1023         struct probe_resp *old_probe_resp;
1024         struct cfg80211_chan_def chandef;
1025
1026         sdata_assert_lock(sdata);
1027
1028         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
1029         if (!old_beacon)
1030                 return -ENOENT;
1031         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
1032
1033         /* abort any running channel switch */
1034         mutex_lock(&local->mtx);
1035         sdata->vif.csa_active = false;
1036         if (sdata->csa_block_tx) {
1037                 ieee80211_wake_vif_queues(local, sdata,
1038                                           IEEE80211_QUEUE_STOP_REASON_CSA);
1039                 sdata->csa_block_tx = false;
1040         }
1041
1042         mutex_unlock(&local->mtx);
1043
1044         kfree(sdata->u.ap.next_beacon);
1045         sdata->u.ap.next_beacon = NULL;
1046
1047         /* turn off carrier for this interface and dependent VLANs */
1048         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
1049                 netif_carrier_off(vlan->dev);
1050         netif_carrier_off(dev);
1051
1052         /* remove beacon and probe response */
1053         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
1054         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
1055         kfree_rcu(old_beacon, rcu_head);
1056         if (old_probe_resp)
1057                 kfree_rcu(old_probe_resp, rcu_head);
1058         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
1059
1060         __sta_info_flush(sdata, true);
1061         ieee80211_free_keys(sdata, true);
1062
1063         sdata->vif.bss_conf.enable_beacon = false;
1064         sdata->vif.bss_conf.ssid_len = 0;
1065         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
1066         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
1067
1068         if (sdata->wdev.cac_started) {
1069                 chandef = sdata->vif.bss_conf.chandef;
1070                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
1071                 cfg80211_cac_event(sdata->dev, &chandef,
1072                                    NL80211_RADAR_CAC_ABORTED,
1073                                    GFP_KERNEL);
1074         }
1075
1076         drv_stop_ap(sdata->local, sdata);
1077
1078         /* free all potentially still buffered bcast frames */
1079         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
1080         ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf);
1081
1082         mutex_lock(&local->mtx);
1083         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
1084         ieee80211_vif_release_channel(sdata);
1085         mutex_unlock(&local->mtx);
1086
1087         return 0;
1088 }
1089
1090 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
1091 struct iapp_layer2_update {
1092         u8 da[ETH_ALEN];        /* broadcast */
1093         u8 sa[ETH_ALEN];        /* STA addr */
1094         __be16 len;             /* 6 */
1095         u8 dsap;                /* 0 */
1096         u8 ssap;                /* 0 */
1097         u8 control;
1098         u8 xid_info[3];
1099 } __packed;
1100
1101 static void ieee80211_send_layer2_update(struct sta_info *sta)
1102 {
1103         struct iapp_layer2_update *msg;
1104         struct sk_buff *skb;
1105
1106         /* Send Level 2 Update Frame to update forwarding tables in layer 2
1107          * bridge devices */
1108
1109         skb = dev_alloc_skb(sizeof(*msg));
1110         if (!skb)
1111                 return;
1112         msg = skb_put(skb, sizeof(*msg));
1113
1114         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
1115          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
1116
1117         eth_broadcast_addr(msg->da);
1118         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
1119         msg->len = htons(6);
1120         msg->dsap = 0;
1121         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
1122         msg->control = 0xaf;    /* XID response lsb.1111F101.
1123                                  * F=0 (no poll command; unsolicited frame) */
1124         msg->xid_info[0] = 0x81;        /* XID format identifier */
1125         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
1126         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
1127
1128         skb->dev = sta->sdata->dev;
1129         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
1130         memset(skb->cb, 0, sizeof(skb->cb));
1131         netif_rx_ni(skb);
1132 }
1133
1134 static int sta_apply_auth_flags(struct ieee80211_local *local,
1135                                 struct sta_info *sta,
1136                                 u32 mask, u32 set)
1137 {
1138         int ret;
1139
1140         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1141             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1142             !test_sta_flag(sta, WLAN_STA_AUTH)) {
1143                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1144                 if (ret)
1145                         return ret;
1146         }
1147
1148         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1149             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1150             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
1151                 /*
1152                  * When peer becomes associated, init rate control as
1153                  * well. Some drivers require rate control initialized
1154                  * before drv_sta_state() is called.
1155                  */
1156                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
1157                         rate_control_rate_init(sta);
1158
1159                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1160                 if (ret)
1161                         return ret;
1162         }
1163
1164         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1165                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
1166                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
1167                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1168                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
1169                 else
1170                         ret = 0;
1171                 if (ret)
1172                         return ret;
1173         }
1174
1175         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
1176             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1177             test_sta_flag(sta, WLAN_STA_ASSOC)) {
1178                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
1179                 if (ret)
1180                         return ret;
1181         }
1182
1183         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
1184             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
1185             test_sta_flag(sta, WLAN_STA_AUTH)) {
1186                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
1187                 if (ret)
1188                         return ret;
1189         }
1190
1191         return 0;
1192 }
1193
1194 static void sta_apply_mesh_params(struct ieee80211_local *local,
1195                                   struct sta_info *sta,
1196                                   struct station_parameters *params)
1197 {
1198 #ifdef CONFIG_MAC80211_MESH
1199         struct ieee80211_sub_if_data *sdata = sta->sdata;
1200         u32 changed = 0;
1201
1202         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
1203                 switch (params->plink_state) {
1204                 case NL80211_PLINK_ESTAB:
1205                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
1206                                 changed = mesh_plink_inc_estab_count(sdata);
1207                         sta->mesh->plink_state = params->plink_state;
1208                         sta->mesh->aid = params->peer_aid;
1209
1210                         ieee80211_mps_sta_status_update(sta);
1211                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1212                                       sdata->u.mesh.mshcfg.power_mode);
1213                         break;
1214                 case NL80211_PLINK_LISTEN:
1215                 case NL80211_PLINK_BLOCKED:
1216                 case NL80211_PLINK_OPN_SNT:
1217                 case NL80211_PLINK_OPN_RCVD:
1218                 case NL80211_PLINK_CNF_RCVD:
1219                 case NL80211_PLINK_HOLDING:
1220                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1221                                 changed = mesh_plink_dec_estab_count(sdata);
1222                         sta->mesh->plink_state = params->plink_state;
1223
1224                         ieee80211_mps_sta_status_update(sta);
1225                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1226                                         NL80211_MESH_POWER_UNKNOWN);
1227                         break;
1228                 default:
1229                         /*  nothing  */
1230                         break;
1231                 }
1232         }
1233
1234         switch (params->plink_action) {
1235         case NL80211_PLINK_ACTION_NO_ACTION:
1236                 /* nothing */
1237                 break;
1238         case NL80211_PLINK_ACTION_OPEN:
1239                 changed |= mesh_plink_open(sta);
1240                 break;
1241         case NL80211_PLINK_ACTION_BLOCK:
1242                 changed |= mesh_plink_block(sta);
1243                 break;
1244         }
1245
1246         if (params->local_pm)
1247                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1248                                                           params->local_pm);
1249
1250         ieee80211_mbss_info_change_notify(sdata, changed);
1251 #endif
1252 }
1253
1254 static int sta_apply_parameters(struct ieee80211_local *local,
1255                                 struct sta_info *sta,
1256                                 struct station_parameters *params)
1257 {
1258         int ret = 0;
1259         struct ieee80211_supported_band *sband;
1260         struct ieee80211_sub_if_data *sdata = sta->sdata;
1261         u32 mask, set;
1262
1263         sband = ieee80211_get_sband(sdata);
1264         if (!sband)
1265                 return -EINVAL;
1266
1267         mask = params->sta_flags_mask;
1268         set = params->sta_flags_set;
1269
1270         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1271                 /*
1272                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1273                  * API but must follow AUTHENTICATED for driver state.
1274                  */
1275                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1276                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1277                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1278                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1279         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1280                 /*
1281                  * TDLS -- everything follows authorized, but
1282                  * only becoming authorized is possible, not
1283                  * going back
1284                  */
1285                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1286                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1287                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1288                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1289                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1290                 }
1291         }
1292
1293         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1294             local->hw.queues >= IEEE80211_NUM_ACS)
1295                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1296
1297         /* auth flags will be set later for TDLS,
1298          * and for unassociated stations that move to assocaited */
1299         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1300             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1301               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1302                 ret = sta_apply_auth_flags(local, sta, mask, set);
1303                 if (ret)
1304                         return ret;
1305         }
1306
1307         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1308                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1309                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1310                 else
1311                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1312         }
1313
1314         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1315                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1316                 if (set & BIT(NL80211_STA_FLAG_MFP))
1317                         set_sta_flag(sta, WLAN_STA_MFP);
1318                 else
1319                         clear_sta_flag(sta, WLAN_STA_MFP);
1320         }
1321
1322         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1323                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1324                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1325                 else
1326                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1327         }
1328
1329         /* mark TDLS channel switch support, if the AP allows it */
1330         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1331             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1332             params->ext_capab_len >= 4 &&
1333             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1334                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1335
1336         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1337             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1338             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1339             params->ext_capab_len >= 8 &&
1340             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1341                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1342
1343         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1344                 sta->sta.uapsd_queues = params->uapsd_queues;
1345                 sta->sta.max_sp = params->max_sp;
1346         }
1347
1348         /* The sender might not have sent the last bit, consider it to be 0 */
1349         if (params->ext_capab_len >= 8) {
1350                 u8 val = (params->ext_capab[7] &
1351                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1352
1353                 /* we did get all the bits, take the MSB as well */
1354                 if (params->ext_capab_len >= 9) {
1355                         u8 val_msb = params->ext_capab[8] &
1356                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1357                         val_msb <<= 1;
1358                         val |= val_msb;
1359                 }
1360
1361                 switch (val) {
1362                 case 1:
1363                         sta->sta.max_amsdu_subframes = 32;
1364                         break;
1365                 case 2:
1366                         sta->sta.max_amsdu_subframes = 16;
1367                         break;
1368                 case 3:
1369                         sta->sta.max_amsdu_subframes = 8;
1370                         break;
1371                 default:
1372                         sta->sta.max_amsdu_subframes = 0;
1373                 }
1374         }
1375
1376         /*
1377          * cfg80211 validates this (1-2007) and allows setting the AID
1378          * only when creating a new station entry
1379          */
1380         if (params->aid)
1381                 sta->sta.aid = params->aid;
1382
1383         /*
1384          * Some of the following updates would be racy if called on an
1385          * existing station, via ieee80211_change_station(). However,
1386          * all such changes are rejected by cfg80211 except for updates
1387          * changing the supported rates on an existing but not yet used
1388          * TDLS peer.
1389          */
1390
1391         if (params->listen_interval >= 0)
1392                 sta->listen_interval = params->listen_interval;
1393
1394         if (params->supported_rates) {
1395                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1396                                          sband, params->supported_rates,
1397                                          params->supported_rates_len,
1398                                          &sta->sta.supp_rates[sband->band]);
1399         }
1400
1401         if (params->ht_capa)
1402                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1403                                                   params->ht_capa, sta);
1404
1405         /* VHT can override some HT caps such as the A-MSDU max length */
1406         if (params->vht_capa)
1407                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1408                                                     params->vht_capa, sta);
1409
1410         if (params->opmode_notif_used) {
1411                 /* returned value is only needed for rc update, but the
1412                  * rc isn't initialized here yet, so ignore it
1413                  */
1414                 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif,
1415                                               sband->band);
1416         }
1417
1418         if (params->support_p2p_ps >= 0)
1419                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1420
1421         if (ieee80211_vif_is_mesh(&sdata->vif))
1422                 sta_apply_mesh_params(local, sta, params);
1423
1424         /* set the STA state after all sta info from usermode has been set */
1425         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1426             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1427                 ret = sta_apply_auth_flags(local, sta, mask, set);
1428                 if (ret)
1429                         return ret;
1430         }
1431
1432         return 0;
1433 }
1434
1435 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1436                                  const u8 *mac,
1437                                  struct station_parameters *params)
1438 {
1439         struct ieee80211_local *local = wiphy_priv(wiphy);
1440         struct sta_info *sta;
1441         struct ieee80211_sub_if_data *sdata;
1442         int err;
1443         int layer2_update;
1444
1445         if (params->vlan) {
1446                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1447
1448                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1449                     sdata->vif.type != NL80211_IFTYPE_AP)
1450                         return -EINVAL;
1451         } else
1452                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1453
1454         if (ether_addr_equal(mac, sdata->vif.addr))
1455                 return -EINVAL;
1456
1457         if (is_multicast_ether_addr(mac))
1458                 return -EINVAL;
1459
1460         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1461         if (!sta)
1462                 return -ENOMEM;
1463
1464         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1465                 sta->sta.tdls = true;
1466
1467         err = sta_apply_parameters(local, sta, params);
1468         if (err) {
1469                 sta_info_free(local, sta);
1470                 return err;
1471         }
1472
1473         /*
1474          * for TDLS and for unassociated station, rate control should be
1475          * initialized only when rates are known and station is marked
1476          * authorized/associated
1477          */
1478         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1479             test_sta_flag(sta, WLAN_STA_ASSOC))
1480                 rate_control_rate_init(sta);
1481
1482         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1483                 sdata->vif.type == NL80211_IFTYPE_AP;
1484
1485         err = sta_info_insert_rcu(sta);
1486         if (err) {
1487                 rcu_read_unlock();
1488                 return err;
1489         }
1490
1491         if (layer2_update)
1492                 ieee80211_send_layer2_update(sta);
1493
1494         rcu_read_unlock();
1495
1496         return 0;
1497 }
1498
1499 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1500                                  struct station_del_parameters *params)
1501 {
1502         struct ieee80211_sub_if_data *sdata;
1503
1504         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1505
1506         if (params->mac)
1507                 return sta_info_destroy_addr_bss(sdata, params->mac);
1508
1509         sta_info_flush(sdata);
1510         return 0;
1511 }
1512
1513 static int ieee80211_change_station(struct wiphy *wiphy,
1514                                     struct net_device *dev, const u8 *mac,
1515                                     struct station_parameters *params)
1516 {
1517         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1518         struct ieee80211_local *local = wiphy_priv(wiphy);
1519         struct sta_info *sta;
1520         struct ieee80211_sub_if_data *vlansdata;
1521         enum cfg80211_station_type statype;
1522         int err;
1523
1524         mutex_lock(&local->sta_mtx);
1525
1526         sta = sta_info_get_bss(sdata, mac);
1527         if (!sta) {
1528                 err = -ENOENT;
1529                 goto out_err;
1530         }
1531
1532         switch (sdata->vif.type) {
1533         case NL80211_IFTYPE_MESH_POINT:
1534                 if (sdata->u.mesh.user_mpm)
1535                         statype = CFG80211_STA_MESH_PEER_USER;
1536                 else
1537                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1538                 break;
1539         case NL80211_IFTYPE_ADHOC:
1540                 statype = CFG80211_STA_IBSS;
1541                 break;
1542         case NL80211_IFTYPE_STATION:
1543                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1544                         statype = CFG80211_STA_AP_STA;
1545                         break;
1546                 }
1547                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1548                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1549                 else
1550                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1551                 break;
1552         case NL80211_IFTYPE_AP:
1553         case NL80211_IFTYPE_AP_VLAN:
1554                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1555                         statype = CFG80211_STA_AP_CLIENT;
1556                 else
1557                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1558                 break;
1559         default:
1560                 err = -EOPNOTSUPP;
1561                 goto out_err;
1562         }
1563
1564         err = cfg80211_check_station_change(wiphy, params, statype);
1565         if (err)
1566                 goto out_err;
1567
1568         if (params->vlan && params->vlan != sta->sdata->dev) {
1569                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1570
1571                 if (params->vlan->ieee80211_ptr->use_4addr) {
1572                         if (vlansdata->u.vlan.sta) {
1573                                 err = -EBUSY;
1574                                 goto out_err;
1575                         }
1576
1577                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1578                         __ieee80211_check_fast_rx_iface(vlansdata);
1579                 }
1580
1581                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1582                     sta->sdata->u.vlan.sta)
1583                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1584
1585                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1586                         ieee80211_vif_dec_num_mcast(sta->sdata);
1587
1588                 sta->sdata = vlansdata;
1589                 ieee80211_check_fast_xmit(sta);
1590
1591                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1592                         ieee80211_vif_inc_num_mcast(sta->sdata);
1593
1594                 ieee80211_send_layer2_update(sta);
1595         }
1596
1597         err = sta_apply_parameters(local, sta, params);
1598         if (err)
1599                 goto out_err;
1600
1601         mutex_unlock(&local->sta_mtx);
1602
1603         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1604              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1605             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1606             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1607             sta_info_tx_streams(sta) != 1) {
1608                 ht_dbg(sta->sdata,
1609                        "%pM just authorized and MIMO capable - update SMPS\n",
1610                        sta->sta.addr);
1611                 ieee80211_send_smps_action(sta->sdata,
1612                         sta->sdata->bss->req_smps,
1613                         sta->sta.addr,
1614                         sta->sdata->vif.bss_conf.bssid);
1615         }
1616
1617         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1618             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1619                 ieee80211_recalc_ps(local);
1620                 ieee80211_recalc_ps_vif(sdata);
1621         }
1622
1623         return 0;
1624 out_err:
1625         mutex_unlock(&local->sta_mtx);
1626         return err;
1627 }
1628
1629 #ifdef CONFIG_MAC80211_MESH
1630 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1631                                const u8 *dst, const u8 *next_hop)
1632 {
1633         struct ieee80211_sub_if_data *sdata;
1634         struct mesh_path *mpath;
1635         struct sta_info *sta;
1636
1637         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1638
1639         rcu_read_lock();
1640         sta = sta_info_get(sdata, next_hop);
1641         if (!sta) {
1642                 rcu_read_unlock();
1643                 return -ENOENT;
1644         }
1645
1646         mpath = mesh_path_add(sdata, dst);
1647         if (IS_ERR(mpath)) {
1648                 rcu_read_unlock();
1649                 return PTR_ERR(mpath);
1650         }
1651
1652         mesh_path_fix_nexthop(mpath, sta);
1653
1654         rcu_read_unlock();
1655         return 0;
1656 }
1657
1658 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1659                                const u8 *dst)
1660 {
1661         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1662
1663         if (dst)
1664                 return mesh_path_del(sdata, dst);
1665
1666         mesh_path_flush_by_iface(sdata);
1667         return 0;
1668 }
1669
1670 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1671                                   const u8 *dst, const u8 *next_hop)
1672 {
1673         struct ieee80211_sub_if_data *sdata;
1674         struct mesh_path *mpath;
1675         struct sta_info *sta;
1676
1677         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1678
1679         rcu_read_lock();
1680
1681         sta = sta_info_get(sdata, next_hop);
1682         if (!sta) {
1683                 rcu_read_unlock();
1684                 return -ENOENT;
1685         }
1686
1687         mpath = mesh_path_lookup(sdata, dst);
1688         if (!mpath) {
1689                 rcu_read_unlock();
1690                 return -ENOENT;
1691         }
1692
1693         mesh_path_fix_nexthop(mpath, sta);
1694
1695         rcu_read_unlock();
1696         return 0;
1697 }
1698
1699 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1700                             struct mpath_info *pinfo)
1701 {
1702         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1703
1704         if (next_hop_sta)
1705                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1706         else
1707                 eth_zero_addr(next_hop);
1708
1709         memset(pinfo, 0, sizeof(*pinfo));
1710
1711         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1712
1713         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1714                         MPATH_INFO_SN |
1715                         MPATH_INFO_METRIC |
1716                         MPATH_INFO_EXPTIME |
1717                         MPATH_INFO_DISCOVERY_TIMEOUT |
1718                         MPATH_INFO_DISCOVERY_RETRIES |
1719                         MPATH_INFO_FLAGS;
1720
1721         pinfo->frame_qlen = mpath->frame_queue.qlen;
1722         pinfo->sn = mpath->sn;
1723         pinfo->metric = mpath->metric;
1724         if (time_before(jiffies, mpath->exp_time))
1725                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1726         pinfo->discovery_timeout =
1727                         jiffies_to_msecs(mpath->discovery_timeout);
1728         pinfo->discovery_retries = mpath->discovery_retries;
1729         if (mpath->flags & MESH_PATH_ACTIVE)
1730                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1731         if (mpath->flags & MESH_PATH_RESOLVING)
1732                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1733         if (mpath->flags & MESH_PATH_SN_VALID)
1734                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1735         if (mpath->flags & MESH_PATH_FIXED)
1736                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1737         if (mpath->flags & MESH_PATH_RESOLVED)
1738                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1739 }
1740
1741 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1742                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1743
1744 {
1745         struct ieee80211_sub_if_data *sdata;
1746         struct mesh_path *mpath;
1747
1748         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1749
1750         rcu_read_lock();
1751         mpath = mesh_path_lookup(sdata, dst);
1752         if (!mpath) {
1753                 rcu_read_unlock();
1754                 return -ENOENT;
1755         }
1756         memcpy(dst, mpath->dst, ETH_ALEN);
1757         mpath_set_pinfo(mpath, next_hop, pinfo);
1758         rcu_read_unlock();
1759         return 0;
1760 }
1761
1762 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1763                                 int idx, u8 *dst, u8 *next_hop,
1764                                 struct mpath_info *pinfo)
1765 {
1766         struct ieee80211_sub_if_data *sdata;
1767         struct mesh_path *mpath;
1768
1769         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1770
1771         rcu_read_lock();
1772         mpath = mesh_path_lookup_by_idx(sdata, idx);
1773         if (!mpath) {
1774                 rcu_read_unlock();
1775                 return -ENOENT;
1776         }
1777         memcpy(dst, mpath->dst, ETH_ALEN);
1778         mpath_set_pinfo(mpath, next_hop, pinfo);
1779         rcu_read_unlock();
1780         return 0;
1781 }
1782
1783 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1784                           struct mpath_info *pinfo)
1785 {
1786         memset(pinfo, 0, sizeof(*pinfo));
1787         memcpy(mpp, mpath->mpp, ETH_ALEN);
1788
1789         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1790 }
1791
1792 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1793                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1794
1795 {
1796         struct ieee80211_sub_if_data *sdata;
1797         struct mesh_path *mpath;
1798
1799         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1800
1801         rcu_read_lock();
1802         mpath = mpp_path_lookup(sdata, dst);
1803         if (!mpath) {
1804                 rcu_read_unlock();
1805                 return -ENOENT;
1806         }
1807         memcpy(dst, mpath->dst, ETH_ALEN);
1808         mpp_set_pinfo(mpath, mpp, pinfo);
1809         rcu_read_unlock();
1810         return 0;
1811 }
1812
1813 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1814                               int idx, u8 *dst, u8 *mpp,
1815                               struct mpath_info *pinfo)
1816 {
1817         struct ieee80211_sub_if_data *sdata;
1818         struct mesh_path *mpath;
1819
1820         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1821
1822         rcu_read_lock();
1823         mpath = mpp_path_lookup_by_idx(sdata, idx);
1824         if (!mpath) {
1825                 rcu_read_unlock();
1826                 return -ENOENT;
1827         }
1828         memcpy(dst, mpath->dst, ETH_ALEN);
1829         mpp_set_pinfo(mpath, mpp, pinfo);
1830         rcu_read_unlock();
1831         return 0;
1832 }
1833
1834 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1835                                 struct net_device *dev,
1836                                 struct mesh_config *conf)
1837 {
1838         struct ieee80211_sub_if_data *sdata;
1839         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1840
1841         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1842         return 0;
1843 }
1844
1845 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1846 {
1847         return (mask >> (parm-1)) & 0x1;
1848 }
1849
1850 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1851                 const struct mesh_setup *setup)
1852 {
1853         u8 *new_ie;
1854         const u8 *old_ie;
1855         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1856                                         struct ieee80211_sub_if_data, u.mesh);
1857
1858         /* allocate information elements */
1859         new_ie = NULL;
1860         old_ie = ifmsh->ie;
1861
1862         if (setup->ie_len) {
1863                 new_ie = kmemdup(setup->ie, setup->ie_len,
1864                                 GFP_KERNEL);
1865                 if (!new_ie)
1866                         return -ENOMEM;
1867         }
1868         ifmsh->ie_len = setup->ie_len;
1869         ifmsh->ie = new_ie;
1870         kfree(old_ie);
1871
1872         /* now copy the rest of the setup parameters */
1873         ifmsh->mesh_id_len = setup->mesh_id_len;
1874         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1875         ifmsh->mesh_sp_id = setup->sync_method;
1876         ifmsh->mesh_pp_id = setup->path_sel_proto;
1877         ifmsh->mesh_pm_id = setup->path_metric;
1878         ifmsh->user_mpm = setup->user_mpm;
1879         ifmsh->mesh_auth_id = setup->auth_id;
1880         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1881         ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs;
1882         if (setup->is_authenticated)
1883                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1884         if (setup->is_secure)
1885                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1886
1887         /* mcast rate setting in Mesh Node */
1888         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1889                                                 sizeof(setup->mcast_rate));
1890         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1891
1892         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1893         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1894
1895         return 0;
1896 }
1897
1898 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1899                                         struct net_device *dev, u32 mask,
1900                                         const struct mesh_config *nconf)
1901 {
1902         struct mesh_config *conf;
1903         struct ieee80211_sub_if_data *sdata;
1904         struct ieee80211_if_mesh *ifmsh;
1905
1906         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1907         ifmsh = &sdata->u.mesh;
1908
1909         /* Set the config options which we are interested in setting */
1910         conf = &(sdata->u.mesh.mshcfg);
1911         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1912                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1913         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1914                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1915         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1916                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1917         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1918                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1919         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1920                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1921         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1922                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1923         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1924                 conf->element_ttl = nconf->element_ttl;
1925         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1926                 if (ifmsh->user_mpm)
1927                         return -EBUSY;
1928                 conf->auto_open_plinks = nconf->auto_open_plinks;
1929         }
1930         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1931                 conf->dot11MeshNbrOffsetMaxNeighbor =
1932                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1933         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1934                 conf->dot11MeshHWMPmaxPREQretries =
1935                         nconf->dot11MeshHWMPmaxPREQretries;
1936         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1937                 conf->path_refresh_time = nconf->path_refresh_time;
1938         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1939                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1940         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1941                 conf->dot11MeshHWMPactivePathTimeout =
1942                         nconf->dot11MeshHWMPactivePathTimeout;
1943         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1944                 conf->dot11MeshHWMPpreqMinInterval =
1945                         nconf->dot11MeshHWMPpreqMinInterval;
1946         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1947                 conf->dot11MeshHWMPperrMinInterval =
1948                         nconf->dot11MeshHWMPperrMinInterval;
1949         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1950                            mask))
1951                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1952                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1953         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1954                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1955                 ieee80211_mesh_root_setup(ifmsh);
1956         }
1957         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1958                 /* our current gate announcement implementation rides on root
1959                  * announcements, so require this ifmsh to also be a root node
1960                  * */
1961                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1962                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1963                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1964                         ieee80211_mesh_root_setup(ifmsh);
1965                 }
1966                 conf->dot11MeshGateAnnouncementProtocol =
1967                         nconf->dot11MeshGateAnnouncementProtocol;
1968         }
1969         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1970                 conf->dot11MeshHWMPRannInterval =
1971                         nconf->dot11MeshHWMPRannInterval;
1972         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1973                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1974         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1975                 /* our RSSI threshold implementation is supported only for
1976                  * devices that report signal in dBm.
1977                  */
1978                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1979                         return -ENOTSUPP;
1980                 conf->rssi_threshold = nconf->rssi_threshold;
1981         }
1982         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1983                 conf->ht_opmode = nconf->ht_opmode;
1984                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1985                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1986         }
1987         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1988                 conf->dot11MeshHWMPactivePathToRootTimeout =
1989                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1990         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1991                 conf->dot11MeshHWMProotInterval =
1992                         nconf->dot11MeshHWMProotInterval;
1993         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1994                 conf->dot11MeshHWMPconfirmationInterval =
1995                         nconf->dot11MeshHWMPconfirmationInterval;
1996         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1997                 conf->power_mode = nconf->power_mode;
1998                 ieee80211_mps_local_status_update(sdata);
1999         }
2000         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
2001                 conf->dot11MeshAwakeWindowDuration =
2002                         nconf->dot11MeshAwakeWindowDuration;
2003         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
2004                 conf->plink_timeout = nconf->plink_timeout;
2005         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
2006         return 0;
2007 }
2008
2009 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
2010                                const struct mesh_config *conf,
2011                                const struct mesh_setup *setup)
2012 {
2013         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2014         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2015         int err;
2016
2017         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
2018         err = copy_mesh_setup(ifmsh, setup);
2019         if (err)
2020                 return err;
2021
2022         /* can mesh use other SMPS modes? */
2023         sdata->smps_mode = IEEE80211_SMPS_OFF;
2024         sdata->needed_rx_chains = sdata->local->rx_chains;
2025
2026         mutex_lock(&sdata->local->mtx);
2027         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
2028                                         IEEE80211_CHANCTX_SHARED);
2029         mutex_unlock(&sdata->local->mtx);
2030         if (err)
2031                 return err;
2032
2033         return ieee80211_start_mesh(sdata);
2034 }
2035
2036 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
2037 {
2038         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2039
2040         ieee80211_stop_mesh(sdata);
2041         mutex_lock(&sdata->local->mtx);
2042         ieee80211_vif_release_channel(sdata);
2043         mutex_unlock(&sdata->local->mtx);
2044
2045         return 0;
2046 }
2047 #endif
2048
2049 static int ieee80211_change_bss(struct wiphy *wiphy,
2050                                 struct net_device *dev,
2051                                 struct bss_parameters *params)
2052 {
2053         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2054         struct ieee80211_supported_band *sband;
2055         u32 changed = 0;
2056
2057         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
2058                 return -ENOENT;
2059
2060         sband = ieee80211_get_sband(sdata);
2061         if (!sband)
2062                 return -EINVAL;
2063
2064         if (params->use_cts_prot >= 0) {
2065                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
2066                 changed |= BSS_CHANGED_ERP_CTS_PROT;
2067         }
2068         if (params->use_short_preamble >= 0) {
2069                 sdata->vif.bss_conf.use_short_preamble =
2070                         params->use_short_preamble;
2071                 changed |= BSS_CHANGED_ERP_PREAMBLE;
2072         }
2073
2074         if (!sdata->vif.bss_conf.use_short_slot &&
2075             sband->band == NL80211_BAND_5GHZ) {
2076                 sdata->vif.bss_conf.use_short_slot = true;
2077                 changed |= BSS_CHANGED_ERP_SLOT;
2078         }
2079
2080         if (params->use_short_slot_time >= 0) {
2081                 sdata->vif.bss_conf.use_short_slot =
2082                         params->use_short_slot_time;
2083                 changed |= BSS_CHANGED_ERP_SLOT;
2084         }
2085
2086         if (params->basic_rates) {
2087                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
2088                                          wiphy->bands[sband->band],
2089                                          params->basic_rates,
2090                                          params->basic_rates_len,
2091                                          &sdata->vif.bss_conf.basic_rates);
2092                 changed |= BSS_CHANGED_BASIC_RATES;
2093                 ieee80211_check_rate_mask(sdata);
2094         }
2095
2096         if (params->ap_isolate >= 0) {
2097                 if (params->ap_isolate)
2098                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2099                 else
2100                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
2101                 ieee80211_check_fast_rx_iface(sdata);
2102         }
2103
2104         if (params->ht_opmode >= 0) {
2105                 sdata->vif.bss_conf.ht_operation_mode =
2106                         (u16) params->ht_opmode;
2107                 changed |= BSS_CHANGED_HT;
2108         }
2109
2110         if (params->p2p_ctwindow >= 0) {
2111                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2112                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2113                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2114                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
2115                 changed |= BSS_CHANGED_P2P_PS;
2116         }
2117
2118         if (params->p2p_opp_ps > 0) {
2119                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
2120                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
2121                 changed |= BSS_CHANGED_P2P_PS;
2122         } else if (params->p2p_opp_ps == 0) {
2123                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
2124                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
2125                 changed |= BSS_CHANGED_P2P_PS;
2126         }
2127
2128         ieee80211_bss_info_change_notify(sdata, changed);
2129
2130         return 0;
2131 }
2132
2133 static int ieee80211_set_txq_params(struct wiphy *wiphy,
2134                                     struct net_device *dev,
2135                                     struct ieee80211_txq_params *params)
2136 {
2137         struct ieee80211_local *local = wiphy_priv(wiphy);
2138         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2139         struct ieee80211_tx_queue_params p;
2140
2141         if (!local->ops->conf_tx)
2142                 return -EOPNOTSUPP;
2143
2144         if (local->hw.queues < IEEE80211_NUM_ACS)
2145                 return -EOPNOTSUPP;
2146
2147         memset(&p, 0, sizeof(p));
2148         p.aifs = params->aifs;
2149         p.cw_max = params->cwmax;
2150         p.cw_min = params->cwmin;
2151         p.txop = params->txop;
2152
2153         /*
2154          * Setting tx queue params disables u-apsd because it's only
2155          * called in master mode.
2156          */
2157         p.uapsd = false;
2158
2159         sdata->tx_conf[params->ac] = p;
2160         if (drv_conf_tx(local, sdata, params->ac, &p)) {
2161                 wiphy_debug(local->hw.wiphy,
2162                             "failed to set TX queue parameters for AC %d\n",
2163                             params->ac);
2164                 return -EINVAL;
2165         }
2166
2167         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
2168
2169         return 0;
2170 }
2171
2172 #ifdef CONFIG_PM
2173 static int ieee80211_suspend(struct wiphy *wiphy,
2174                              struct cfg80211_wowlan *wowlan)
2175 {
2176         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
2177 }
2178
2179 static int ieee80211_resume(struct wiphy *wiphy)
2180 {
2181         return __ieee80211_resume(wiphy_priv(wiphy));
2182 }
2183 #else
2184 #define ieee80211_suspend NULL
2185 #define ieee80211_resume NULL
2186 #endif
2187
2188 static int ieee80211_scan(struct wiphy *wiphy,
2189                           struct cfg80211_scan_request *req)
2190 {
2191         struct ieee80211_sub_if_data *sdata;
2192
2193         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
2194
2195         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
2196         case NL80211_IFTYPE_STATION:
2197         case NL80211_IFTYPE_ADHOC:
2198         case NL80211_IFTYPE_MESH_POINT:
2199         case NL80211_IFTYPE_P2P_CLIENT:
2200         case NL80211_IFTYPE_P2P_DEVICE:
2201                 break;
2202         case NL80211_IFTYPE_P2P_GO:
2203                 if (sdata->local->ops->hw_scan)
2204                         break;
2205                 /*
2206                  * FIXME: implement NoA while scanning in software,
2207                  * for now fall through to allow scanning only when
2208                  * beaconing hasn't been configured yet
2209                  */
2210                 /* fall through */
2211         case NL80211_IFTYPE_AP:
2212                 /*
2213                  * If the scan has been forced (and the driver supports
2214                  * forcing), don't care about being beaconing already.
2215                  * This will create problems to the attached stations (e.g. all
2216                  * the  frames sent while scanning on other channel will be
2217                  * lost)
2218                  */
2219                 if (sdata->u.ap.beacon &&
2220                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2221                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2222                         return -EOPNOTSUPP;
2223                 break;
2224         case NL80211_IFTYPE_NAN:
2225         default:
2226                 return -EOPNOTSUPP;
2227         }
2228
2229         return ieee80211_request_scan(sdata, req);
2230 }
2231
2232 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2233 {
2234         ieee80211_scan_cancel(wiphy_priv(wiphy));
2235 }
2236
2237 static int
2238 ieee80211_sched_scan_start(struct wiphy *wiphy,
2239                            struct net_device *dev,
2240                            struct cfg80211_sched_scan_request *req)
2241 {
2242         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2243
2244         if (!sdata->local->ops->sched_scan_start)
2245                 return -EOPNOTSUPP;
2246
2247         return ieee80211_request_sched_scan_start(sdata, req);
2248 }
2249
2250 static int
2251 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
2252                           u64 reqid)
2253 {
2254         struct ieee80211_local *local = wiphy_priv(wiphy);
2255
2256         if (!local->ops->sched_scan_stop)
2257                 return -EOPNOTSUPP;
2258
2259         return ieee80211_request_sched_scan_stop(local);
2260 }
2261
2262 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2263                           struct cfg80211_auth_request *req)
2264 {
2265         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2266 }
2267
2268 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2269                            struct cfg80211_assoc_request *req)
2270 {
2271         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2272 }
2273
2274 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2275                             struct cfg80211_deauth_request *req)
2276 {
2277         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2278 }
2279
2280 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2281                               struct cfg80211_disassoc_request *req)
2282 {
2283         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2284 }
2285
2286 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2287                                struct cfg80211_ibss_params *params)
2288 {
2289         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2290 }
2291
2292 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2293 {
2294         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2295 }
2296
2297 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2298                               struct ocb_setup *setup)
2299 {
2300         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2301 }
2302
2303 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2304 {
2305         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2306 }
2307
2308 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2309                                     int rate[NUM_NL80211_BANDS])
2310 {
2311         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2312
2313         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2314                sizeof(int) * NUM_NL80211_BANDS);
2315
2316         return 0;
2317 }
2318
2319 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2320 {
2321         struct ieee80211_local *local = wiphy_priv(wiphy);
2322         int err;
2323
2324         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2325                 ieee80211_check_fast_xmit_all(local);
2326
2327                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2328
2329                 if (err) {
2330                         ieee80211_check_fast_xmit_all(local);
2331                         return err;
2332                 }
2333         }
2334
2335         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2336             (changed & WIPHY_PARAM_DYN_ACK)) {
2337                 s16 coverage_class;
2338
2339                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2340                                         wiphy->coverage_class : -1;
2341                 err = drv_set_coverage_class(local, coverage_class);
2342
2343                 if (err)
2344                         return err;
2345         }
2346
2347         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2348                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2349
2350                 if (err)
2351                         return err;
2352         }
2353
2354         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2355                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2356                         return -EINVAL;
2357                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2358         }
2359         if (changed & WIPHY_PARAM_RETRY_LONG) {
2360                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2361                         return -EINVAL;
2362                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2363         }
2364         if (changed &
2365             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2366                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2367
2368         return 0;
2369 }
2370
2371 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2372                                   struct wireless_dev *wdev,
2373                                   enum nl80211_tx_power_setting type, int mbm)
2374 {
2375         struct ieee80211_local *local = wiphy_priv(wiphy);
2376         struct ieee80211_sub_if_data *sdata;
2377         enum nl80211_tx_power_setting txp_type = type;
2378         bool update_txp_type = false;
2379         bool has_monitor = false;
2380
2381         if (wdev) {
2382                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2383
2384                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2385                         sdata = rtnl_dereference(local->monitor_sdata);
2386                         if (!sdata)
2387                                 return -EOPNOTSUPP;
2388                 }
2389
2390                 switch (type) {
2391                 case NL80211_TX_POWER_AUTOMATIC:
2392                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2393                         txp_type = NL80211_TX_POWER_LIMITED;
2394                         break;
2395                 case NL80211_TX_POWER_LIMITED:
2396                 case NL80211_TX_POWER_FIXED:
2397                         if (mbm < 0 || (mbm % 100))
2398                                 return -EOPNOTSUPP;
2399                         sdata->user_power_level = MBM_TO_DBM(mbm);
2400                         break;
2401                 }
2402
2403                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2404                         update_txp_type = true;
2405                         sdata->vif.bss_conf.txpower_type = txp_type;
2406                 }
2407
2408                 ieee80211_recalc_txpower(sdata, update_txp_type);
2409
2410                 return 0;
2411         }
2412
2413         switch (type) {
2414         case NL80211_TX_POWER_AUTOMATIC:
2415                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2416                 txp_type = NL80211_TX_POWER_LIMITED;
2417                 break;
2418         case NL80211_TX_POWER_LIMITED:
2419         case NL80211_TX_POWER_FIXED:
2420                 if (mbm < 0 || (mbm % 100))
2421                         return -EOPNOTSUPP;
2422                 local->user_power_level = MBM_TO_DBM(mbm);
2423                 break;
2424         }
2425
2426         mutex_lock(&local->iflist_mtx);
2427         list_for_each_entry(sdata, &local->interfaces, list) {
2428                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {
2429                         has_monitor = true;
2430                         continue;
2431                 }
2432                 sdata->user_power_level = local->user_power_level;
2433                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2434                         update_txp_type = true;
2435                 sdata->vif.bss_conf.txpower_type = txp_type;
2436         }
2437         list_for_each_entry(sdata, &local->interfaces, list) {
2438                 if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
2439                         continue;
2440                 ieee80211_recalc_txpower(sdata, update_txp_type);
2441         }
2442         mutex_unlock(&local->iflist_mtx);
2443
2444         if (has_monitor) {
2445                 sdata = rtnl_dereference(local->monitor_sdata);
2446                 if (sdata) {
2447                         sdata->user_power_level = local->user_power_level;
2448                         if (txp_type != sdata->vif.bss_conf.txpower_type)
2449                                 update_txp_type = true;
2450                         sdata->vif.bss_conf.txpower_type = txp_type;
2451
2452                         ieee80211_recalc_txpower(sdata, update_txp_type);
2453                 }
2454         }
2455
2456         return 0;
2457 }
2458
2459 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2460                                   struct wireless_dev *wdev,
2461                                   int *dbm)
2462 {
2463         struct ieee80211_local *local = wiphy_priv(wiphy);
2464         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2465
2466         if (local->ops->get_txpower)
2467                 return drv_get_txpower(local, sdata, dbm);
2468
2469         if (!local->use_chanctx)
2470                 *dbm = local->hw.conf.power_level;
2471         else
2472                 *dbm = sdata->vif.bss_conf.txpower;
2473
2474         return 0;
2475 }
2476
2477 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2478                                   const u8 *addr)
2479 {
2480         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2481
2482         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2483
2484         return 0;
2485 }
2486
2487 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2488 {
2489         struct ieee80211_local *local = wiphy_priv(wiphy);
2490
2491         drv_rfkill_poll(local);
2492 }
2493
2494 #ifdef CONFIG_NL80211_TESTMODE
2495 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2496                                   struct wireless_dev *wdev,
2497                                   void *data, int len)
2498 {
2499         struct ieee80211_local *local = wiphy_priv(wiphy);
2500         struct ieee80211_vif *vif = NULL;
2501
2502         if (!local->ops->testmode_cmd)
2503                 return -EOPNOTSUPP;
2504
2505         if (wdev) {
2506                 struct ieee80211_sub_if_data *sdata;
2507
2508                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2509                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2510                         vif = &sdata->vif;
2511         }
2512
2513         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2514 }
2515
2516 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2517                                    struct sk_buff *skb,
2518                                    struct netlink_callback *cb,
2519                                    void *data, int len)
2520 {
2521         struct ieee80211_local *local = wiphy_priv(wiphy);
2522
2523         if (!local->ops->testmode_dump)
2524                 return -EOPNOTSUPP;
2525
2526         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2527 }
2528 #endif
2529
2530 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2531                                 enum ieee80211_smps_mode smps_mode)
2532 {
2533         struct sta_info *sta;
2534         enum ieee80211_smps_mode old_req;
2535
2536         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2537                 return -EINVAL;
2538
2539         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2540                 return 0;
2541
2542         old_req = sdata->u.ap.req_smps;
2543         sdata->u.ap.req_smps = smps_mode;
2544
2545         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2546         if (old_req == smps_mode ||
2547             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2548                 return 0;
2549
2550         ht_dbg(sdata,
2551                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2552                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2553
2554         mutex_lock(&sdata->local->sta_mtx);
2555         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2556                 /*
2557                  * Only stations associated to our AP and
2558                  * associated VLANs
2559                  */
2560                 if (sta->sdata->bss != &sdata->u.ap)
2561                         continue;
2562
2563                 /* This station doesn't support MIMO - skip it */
2564                 if (sta_info_tx_streams(sta) == 1)
2565                         continue;
2566
2567                 /*
2568                  * Don't wake up a STA just to send the action frame
2569                  * unless we are getting more restrictive.
2570                  */
2571                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2572                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2573                                                    smps_mode)) {
2574                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2575                                sta->sta.addr);
2576                         continue;
2577                 }
2578
2579                 /*
2580                  * If the STA is not authorized, wait until it gets
2581                  * authorized and the action frame will be sent then.
2582                  */
2583                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2584                         continue;
2585
2586                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2587                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2588                                            sdata->vif.bss_conf.bssid);
2589         }
2590         mutex_unlock(&sdata->local->sta_mtx);
2591
2592         sdata->smps_mode = smps_mode;
2593         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2594
2595         return 0;
2596 }
2597
2598 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2599                                  enum ieee80211_smps_mode smps_mode)
2600 {
2601         const u8 *ap;
2602         enum ieee80211_smps_mode old_req;
2603         int err;
2604         struct sta_info *sta;
2605         bool tdls_peer_found = false;
2606
2607         lockdep_assert_held(&sdata->wdev.mtx);
2608
2609         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2610                 return -EINVAL;
2611
2612         old_req = sdata->u.mgd.req_smps;
2613         sdata->u.mgd.req_smps = smps_mode;
2614
2615         if (old_req == smps_mode &&
2616             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2617                 return 0;
2618
2619         /*
2620          * If not associated, or current association is not an HT
2621          * association, there's no need to do anything, just store
2622          * the new value until we associate.
2623          */
2624         if (!sdata->u.mgd.associated ||
2625             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2626                 return 0;
2627
2628         ap = sdata->u.mgd.associated->bssid;
2629
2630         rcu_read_lock();
2631         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2632                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2633                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2634                         continue;
2635
2636                 tdls_peer_found = true;
2637                 break;
2638         }
2639         rcu_read_unlock();
2640
2641         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2642                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2643                         smps_mode = IEEE80211_SMPS_OFF;
2644                 else
2645                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2646         }
2647
2648         /* send SM PS frame to AP */
2649         err = ieee80211_send_smps_action(sdata, smps_mode,
2650                                          ap, ap);
2651         if (err)
2652                 sdata->u.mgd.req_smps = old_req;
2653         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2654                 ieee80211_teardown_tdls_peers(sdata);
2655
2656         return err;
2657 }
2658
2659 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2660                                     bool enabled, int timeout)
2661 {
2662         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2663         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2664
2665         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2666                 return -EOPNOTSUPP;
2667
2668         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2669                 return -EOPNOTSUPP;
2670
2671         if (enabled == sdata->u.mgd.powersave &&
2672             timeout == local->dynamic_ps_forced_timeout)
2673                 return 0;
2674
2675         sdata->u.mgd.powersave = enabled;
2676         local->dynamic_ps_forced_timeout = timeout;
2677
2678         /* no change, but if automatic follow powersave */
2679         sdata_lock(sdata);
2680         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2681         sdata_unlock(sdata);
2682
2683         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2684                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2685
2686         ieee80211_recalc_ps(local);
2687         ieee80211_recalc_ps_vif(sdata);
2688
2689         return 0;
2690 }
2691
2692 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2693                                          struct net_device *dev,
2694                                          s32 rssi_thold, u32 rssi_hyst)
2695 {
2696         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2697         struct ieee80211_vif *vif = &sdata->vif;
2698         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2699
2700         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2701             rssi_hyst == bss_conf->cqm_rssi_hyst)
2702                 return 0;
2703
2704         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2705             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2706                 return -EOPNOTSUPP;
2707
2708         bss_conf->cqm_rssi_thold = rssi_thold;
2709         bss_conf->cqm_rssi_hyst = rssi_hyst;
2710         bss_conf->cqm_rssi_low = 0;
2711         bss_conf->cqm_rssi_high = 0;
2712         sdata->u.mgd.last_cqm_event_signal = 0;
2713
2714         /* tell the driver upon association, unless already associated */
2715         if (sdata->u.mgd.associated &&
2716             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2717                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2718
2719         return 0;
2720 }
2721
2722 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy,
2723                                                struct net_device *dev,
2724                                                s32 rssi_low, s32 rssi_high)
2725 {
2726         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2727         struct ieee80211_vif *vif = &sdata->vif;
2728         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2729
2730         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)
2731                 return -EOPNOTSUPP;
2732
2733         bss_conf->cqm_rssi_low = rssi_low;
2734         bss_conf->cqm_rssi_high = rssi_high;
2735         bss_conf->cqm_rssi_thold = 0;
2736         bss_conf->cqm_rssi_hyst = 0;
2737         sdata->u.mgd.last_cqm_event_signal = 0;
2738
2739         /* tell the driver upon association, unless already associated */
2740         if (sdata->u.mgd.associated &&
2741             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2742                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2743
2744         return 0;
2745 }
2746
2747 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2748                                       struct net_device *dev,
2749                                       const u8 *addr,
2750                                       const struct cfg80211_bitrate_mask *mask)
2751 {
2752         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2753         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2754         int i, ret;
2755
2756         if (!ieee80211_sdata_running(sdata))
2757                 return -ENETDOWN;
2758
2759         /*
2760          * If active validate the setting and reject it if it doesn't leave
2761          * at least one basic rate usable, since we really have to be able
2762          * to send something, and if we're an AP we have to be able to do
2763          * so at a basic rate so that all clients can receive it.
2764          */
2765         if (rcu_access_pointer(sdata->vif.chanctx_conf) &&
2766             sdata->vif.bss_conf.chandef.chan) {
2767                 u32 basic_rates = sdata->vif.bss_conf.basic_rates;
2768                 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band;
2769
2770                 if (!(mask->control[band].legacy & basic_rates))
2771                         return -EINVAL;
2772         }
2773
2774         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2775                 ret = drv_set_bitrate_mask(local, sdata, mask);
2776                 if (ret)
2777                         return ret;
2778         }
2779
2780         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2781                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2782                 int j;
2783
2784                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2785                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2786                        sizeof(mask->control[i].ht_mcs));
2787                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2788                        mask->control[i].vht_mcs,
2789                        sizeof(mask->control[i].vht_mcs));
2790
2791                 sdata->rc_has_mcs_mask[i] = false;
2792                 sdata->rc_has_vht_mcs_mask[i] = false;
2793                 if (!sband)
2794                         continue;
2795
2796                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2797                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2798                                 sdata->rc_has_mcs_mask[i] = true;
2799                                 break;
2800                         }
2801                 }
2802
2803                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2804                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2805                                 sdata->rc_has_vht_mcs_mask[i] = true;
2806                                 break;
2807                         }
2808                 }
2809         }
2810
2811         return 0;
2812 }
2813
2814 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2815                                            struct net_device *dev,
2816                                            struct cfg80211_chan_def *chandef,
2817                                            u32 cac_time_ms)
2818 {
2819         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2820         struct ieee80211_local *local = sdata->local;
2821         int err;
2822
2823         mutex_lock(&local->mtx);
2824         if (!list_empty(&local->roc_list) || local->scanning) {
2825                 err = -EBUSY;
2826                 goto out_unlock;
2827         }
2828
2829         /* whatever, but channel contexts should not complain about that one */
2830         sdata->smps_mode = IEEE80211_SMPS_OFF;
2831         sdata->needed_rx_chains = local->rx_chains;
2832
2833         err = ieee80211_vif_use_channel(sdata, chandef,
2834                                         IEEE80211_CHANCTX_SHARED);
2835         if (err)
2836                 goto out_unlock;
2837
2838         ieee80211_queue_delayed_work(&sdata->local->hw,
2839                                      &sdata->dfs_cac_timer_work,
2840                                      msecs_to_jiffies(cac_time_ms));
2841
2842  out_unlock:
2843         mutex_unlock(&local->mtx);
2844         return err;
2845 }
2846
2847 static struct cfg80211_beacon_data *
2848 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2849 {
2850         struct cfg80211_beacon_data *new_beacon;
2851         u8 *pos;
2852         int len;
2853
2854         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2855               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2856               beacon->probe_resp_len;
2857
2858         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2859         if (!new_beacon)
2860                 return NULL;
2861
2862         pos = (u8 *)(new_beacon + 1);
2863         if (beacon->head_len) {
2864                 new_beacon->head_len = beacon->head_len;
2865                 new_beacon->head = pos;
2866                 memcpy(pos, beacon->head, beacon->head_len);
2867                 pos += beacon->head_len;
2868         }
2869         if (beacon->tail_len) {
2870                 new_beacon->tail_len = beacon->tail_len;
2871                 new_beacon->tail = pos;
2872                 memcpy(pos, beacon->tail, beacon->tail_len);
2873                 pos += beacon->tail_len;
2874         }
2875         if (beacon->beacon_ies_len) {
2876                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2877                 new_beacon->beacon_ies = pos;
2878                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2879                 pos += beacon->beacon_ies_len;
2880         }
2881         if (beacon->proberesp_ies_len) {
2882                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2883                 new_beacon->proberesp_ies = pos;
2884                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2885                 pos += beacon->proberesp_ies_len;
2886         }
2887         if (beacon->assocresp_ies_len) {
2888                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2889                 new_beacon->assocresp_ies = pos;
2890                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2891                 pos += beacon->assocresp_ies_len;
2892         }
2893         if (beacon->probe_resp_len) {
2894                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2895                 new_beacon->probe_resp = pos;
2896                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2897                 pos += beacon->probe_resp_len;
2898         }
2899
2900         return new_beacon;
2901 }
2902
2903 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2904 {
2905         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2906
2907         ieee80211_queue_work(&sdata->local->hw,
2908                              &sdata->csa_finalize_work);
2909 }
2910 EXPORT_SYMBOL(ieee80211_csa_finish);
2911
2912 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2913                                           u32 *changed)
2914 {
2915         int err;
2916
2917         switch (sdata->vif.type) {
2918         case NL80211_IFTYPE_AP:
2919                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2920                                               NULL);
2921                 kfree(sdata->u.ap.next_beacon);
2922                 sdata->u.ap.next_beacon = NULL;
2923
2924                 if (err < 0)
2925                         return err;
2926                 *changed |= err;
2927                 break;
2928         case NL80211_IFTYPE_ADHOC:
2929                 err = ieee80211_ibss_finish_csa(sdata);
2930                 if (err < 0)
2931                         return err;
2932                 *changed |= err;
2933                 break;
2934 #ifdef CONFIG_MAC80211_MESH
2935         case NL80211_IFTYPE_MESH_POINT:
2936                 err = ieee80211_mesh_finish_csa(sdata);
2937                 if (err < 0)
2938                         return err;
2939                 *changed |= err;
2940                 break;
2941 #endif
2942         default:
2943                 WARN_ON(1);
2944                 return -EINVAL;
2945         }
2946
2947         return 0;
2948 }
2949
2950 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2951 {
2952         struct ieee80211_local *local = sdata->local;
2953         u32 changed = 0;
2954         int err;
2955
2956         sdata_assert_lock(sdata);
2957         lockdep_assert_held(&local->mtx);
2958         lockdep_assert_held(&local->chanctx_mtx);
2959
2960         /*
2961          * using reservation isn't immediate as it may be deferred until later
2962          * with multi-vif. once reservation is complete it will re-schedule the
2963          * work with no reserved_chanctx so verify chandef to check if it
2964          * completed successfully
2965          */
2966
2967         if (sdata->reserved_chanctx) {
2968                 /*
2969                  * with multi-vif csa driver may call ieee80211_csa_finish()
2970                  * many times while waiting for other interfaces to use their
2971                  * reservations
2972                  */
2973                 if (sdata->reserved_ready)
2974                         return 0;
2975
2976                 return ieee80211_vif_use_reserved_context(sdata);
2977         }
2978
2979         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2980                                         &sdata->csa_chandef))
2981                 return -EINVAL;
2982
2983         sdata->vif.csa_active = false;
2984
2985         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2986         if (err)
2987                 return err;
2988
2989         ieee80211_bss_info_change_notify(sdata, changed);
2990
2991         if (sdata->csa_block_tx) {
2992                 ieee80211_wake_vif_queues(local, sdata,
2993                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2994                 sdata->csa_block_tx = false;
2995         }
2996
2997         err = drv_post_channel_switch(sdata);
2998         if (err)
2999                 return err;
3000
3001         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
3002
3003         return 0;
3004 }
3005
3006 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
3007 {
3008         if (__ieee80211_csa_finalize(sdata)) {
3009                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
3010                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
3011                                     GFP_KERNEL);
3012         }
3013 }
3014
3015 void ieee80211_csa_finalize_work(struct work_struct *work)
3016 {
3017         struct ieee80211_sub_if_data *sdata =
3018                 container_of(work, struct ieee80211_sub_if_data,
3019                              csa_finalize_work);
3020         struct ieee80211_local *local = sdata->local;
3021
3022         sdata_lock(sdata);
3023         mutex_lock(&local->mtx);
3024         mutex_lock(&local->chanctx_mtx);
3025
3026         /* AP might have been stopped while waiting for the lock. */
3027         if (!sdata->vif.csa_active)
3028                 goto unlock;
3029
3030         if (!ieee80211_sdata_running(sdata))
3031                 goto unlock;
3032
3033         ieee80211_csa_finalize(sdata);
3034
3035 unlock:
3036         mutex_unlock(&local->chanctx_mtx);
3037         mutex_unlock(&local->mtx);
3038         sdata_unlock(sdata);
3039 }
3040
3041 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
3042                                     struct cfg80211_csa_settings *params,
3043                                     u32 *changed)
3044 {
3045         struct ieee80211_csa_settings csa = {};
3046         int err;
3047
3048         switch (sdata->vif.type) {
3049         case NL80211_IFTYPE_AP:
3050                 sdata->u.ap.next_beacon =
3051                         cfg80211_beacon_dup(&params->beacon_after);
3052                 if (!sdata->u.ap.next_beacon)
3053                         return -ENOMEM;
3054
3055                 /*
3056                  * With a count of 0, we don't have to wait for any
3057                  * TBTT before switching, so complete the CSA
3058                  * immediately.  In theory, with a count == 1 we
3059                  * should delay the switch until just before the next
3060                  * TBTT, but that would complicate things so we switch
3061                  * immediately too.  If we would delay the switch
3062                  * until the next TBTT, we would have to set the probe
3063                  * response here.
3064                  *
3065                  * TODO: A channel switch with count <= 1 without
3066                  * sending a CSA action frame is kind of useless,
3067                  * because the clients won't know we're changing
3068                  * channels.  The action frame must be implemented
3069                  * either here or in the userspace.
3070                  */
3071                 if (params->count <= 1)
3072                         break;
3073
3074                 if ((params->n_counter_offsets_beacon >
3075                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
3076                     (params->n_counter_offsets_presp >
3077                      IEEE80211_MAX_CSA_COUNTERS_NUM))
3078                         return -EINVAL;
3079
3080                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
3081                 csa.counter_offsets_presp = params->counter_offsets_presp;
3082                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
3083                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
3084                 csa.count = params->count;
3085
3086                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
3087                 if (err < 0) {
3088                         kfree(sdata->u.ap.next_beacon);
3089                         return err;
3090                 }
3091                 *changed |= err;
3092
3093                 break;
3094         case NL80211_IFTYPE_ADHOC:
3095                 if (!sdata->vif.bss_conf.ibss_joined)
3096                         return -EINVAL;
3097
3098                 if (params->chandef.width != sdata->u.ibss.chandef.width)
3099                         return -EINVAL;
3100
3101                 switch (params->chandef.width) {
3102                 case NL80211_CHAN_WIDTH_40:
3103                         if (cfg80211_get_chandef_type(&params->chandef) !=
3104                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
3105                                 return -EINVAL;
3106                 case NL80211_CHAN_WIDTH_5:
3107                 case NL80211_CHAN_WIDTH_10:
3108                 case NL80211_CHAN_WIDTH_20_NOHT:
3109                 case NL80211_CHAN_WIDTH_20:
3110                         break;
3111                 default:
3112                         return -EINVAL;
3113                 }
3114
3115                 /* changes into another band are not supported */
3116                 if (sdata->u.ibss.chandef.chan->band !=
3117                     params->chandef.chan->band)
3118                         return -EINVAL;
3119
3120                 /* see comments in the NL80211_IFTYPE_AP block */
3121                 if (params->count > 1) {
3122                         err = ieee80211_ibss_csa_beacon(sdata, params);
3123                         if (err < 0)
3124                                 return err;
3125                         *changed |= err;
3126                 }
3127
3128                 ieee80211_send_action_csa(sdata, params);
3129
3130                 break;
3131 #ifdef CONFIG_MAC80211_MESH
3132         case NL80211_IFTYPE_MESH_POINT: {
3133                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
3134
3135                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
3136                         return -EINVAL;
3137
3138                 /* changes into another band are not supported */
3139                 if (sdata->vif.bss_conf.chandef.chan->band !=
3140                     params->chandef.chan->band)
3141                         return -EINVAL;
3142
3143                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
3144                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
3145                         if (!ifmsh->pre_value)
3146                                 ifmsh->pre_value = 1;
3147                         else
3148                                 ifmsh->pre_value++;
3149                 }
3150
3151                 /* see comments in the NL80211_IFTYPE_AP block */
3152                 if (params->count > 1) {
3153                         err = ieee80211_mesh_csa_beacon(sdata, params);
3154                         if (err < 0) {
3155                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
3156                                 return err;
3157                         }
3158                         *changed |= err;
3159                 }
3160
3161                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
3162                         ieee80211_send_action_csa(sdata, params);
3163
3164                 break;
3165                 }
3166 #endif
3167         default:
3168                 return -EOPNOTSUPP;
3169         }
3170
3171         return 0;
3172 }
3173
3174 static int
3175 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3176                            struct cfg80211_csa_settings *params)
3177 {
3178         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3179         struct ieee80211_local *local = sdata->local;
3180         struct ieee80211_channel_switch ch_switch;
3181         struct ieee80211_chanctx_conf *conf;
3182         struct ieee80211_chanctx *chanctx;
3183         u32 changed = 0;
3184         int err;
3185
3186         sdata_assert_lock(sdata);
3187         lockdep_assert_held(&local->mtx);
3188
3189         if (!list_empty(&local->roc_list) || local->scanning)
3190                 return -EBUSY;
3191
3192         if (sdata->wdev.cac_started)
3193                 return -EBUSY;
3194
3195         if (cfg80211_chandef_identical(&params->chandef,
3196                                        &sdata->vif.bss_conf.chandef))
3197                 return -EINVAL;
3198
3199         /* don't allow another channel switch if one is already active. */
3200         if (sdata->vif.csa_active)
3201                 return -EBUSY;
3202
3203         mutex_lock(&local->chanctx_mtx);
3204         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
3205                                          lockdep_is_held(&local->chanctx_mtx));
3206         if (!conf) {
3207                 err = -EBUSY;
3208                 goto out;
3209         }
3210
3211         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
3212
3213         ch_switch.timestamp = 0;
3214         ch_switch.device_timestamp = 0;
3215         ch_switch.block_tx = params->block_tx;
3216         ch_switch.chandef = params->chandef;
3217         ch_switch.count = params->count;
3218
3219         err = drv_pre_channel_switch(sdata, &ch_switch);
3220         if (err)
3221                 goto out;
3222
3223         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
3224                                             chanctx->mode,
3225                                             params->radar_required);
3226         if (err)
3227                 goto out;
3228
3229         /* if reservation is invalid then this will fail */
3230         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
3231         if (err) {
3232                 ieee80211_vif_unreserve_chanctx(sdata);
3233                 goto out;
3234         }
3235
3236         err = ieee80211_set_csa_beacon(sdata, params, &changed);
3237         if (err) {
3238                 ieee80211_vif_unreserve_chanctx(sdata);
3239                 goto out;
3240         }
3241
3242         sdata->csa_chandef = params->chandef;
3243         sdata->csa_block_tx = params->block_tx;
3244         sdata->vif.csa_active = true;
3245
3246         if (sdata->csa_block_tx)
3247                 ieee80211_stop_vif_queues(local, sdata,
3248                                           IEEE80211_QUEUE_STOP_REASON_CSA);
3249
3250         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
3251                                           params->count);
3252
3253         if (changed) {
3254                 ieee80211_bss_info_change_notify(sdata, changed);
3255                 drv_channel_switch_beacon(sdata, &params->chandef);
3256         } else {
3257                 /* if the beacon didn't change, we can finalize immediately */
3258                 ieee80211_csa_finalize(sdata);
3259         }
3260
3261 out:
3262         mutex_unlock(&local->chanctx_mtx);
3263         return err;
3264 }
3265
3266 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3267                              struct cfg80211_csa_settings *params)
3268 {
3269         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3270         struct ieee80211_local *local = sdata->local;
3271         int err;
3272
3273         mutex_lock(&local->mtx);
3274         err = __ieee80211_channel_switch(wiphy, dev, params);
3275         mutex_unlock(&local->mtx);
3276
3277         return err;
3278 }
3279
3280 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3281 {
3282         lockdep_assert_held(&local->mtx);
3283
3284         local->roc_cookie_counter++;
3285
3286         /* wow, you wrapped 64 bits ... more likely a bug */
3287         if (WARN_ON(local->roc_cookie_counter == 0))
3288                 local->roc_cookie_counter++;
3289
3290         return local->roc_cookie_counter;
3291 }
3292
3293 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3294                              u64 *cookie, gfp_t gfp)
3295 {
3296         unsigned long spin_flags;
3297         struct sk_buff *ack_skb;
3298         int id;
3299
3300         ack_skb = skb_copy(skb, gfp);
3301         if (!ack_skb)
3302                 return -ENOMEM;
3303
3304         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3305         id = idr_alloc(&local->ack_status_frames, ack_skb,
3306                        1, 0x10000, GFP_ATOMIC);
3307         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3308
3309         if (id < 0) {
3310                 kfree_skb(ack_skb);
3311                 return -ENOMEM;
3312         }
3313
3314         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3315
3316         *cookie = ieee80211_mgmt_tx_cookie(local);
3317         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3318
3319         return 0;
3320 }
3321
3322 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3323                                           struct wireless_dev *wdev,
3324                                           u16 frame_type, bool reg)
3325 {
3326         struct ieee80211_local *local = wiphy_priv(wiphy);
3327         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3328
3329         switch (frame_type) {
3330         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3331                 if (reg) {
3332                         local->probe_req_reg++;
3333                         sdata->vif.probe_req_reg++;
3334                 } else {
3335                         if (local->probe_req_reg)
3336                                 local->probe_req_reg--;
3337
3338                         if (sdata->vif.probe_req_reg)
3339                                 sdata->vif.probe_req_reg--;
3340                 }
3341
3342                 if (!local->open_count)
3343                         break;
3344
3345                 if (sdata->vif.probe_req_reg == 1)
3346                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3347                                                 FIF_PROBE_REQ);
3348                 else if (sdata->vif.probe_req_reg == 0)
3349                         drv_config_iface_filter(local, sdata, 0,
3350                                                 FIF_PROBE_REQ);
3351
3352                 ieee80211_configure_filter(local);
3353                 break;
3354         default:
3355                 break;
3356         }
3357 }
3358
3359 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3360 {
3361         struct ieee80211_local *local = wiphy_priv(wiphy);
3362
3363         if (local->started)
3364                 return -EOPNOTSUPP;
3365
3366         return drv_set_antenna(local, tx_ant, rx_ant);
3367 }
3368
3369 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3370 {
3371         struct ieee80211_local *local = wiphy_priv(wiphy);
3372
3373         return drv_get_antenna(local, tx_ant, rx_ant);
3374 }
3375
3376 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3377                                     struct net_device *dev,
3378                                     struct cfg80211_gtk_rekey_data *data)
3379 {
3380         struct ieee80211_local *local = wiphy_priv(wiphy);
3381         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3382
3383         if (!local->ops->set_rekey_data)
3384                 return -EOPNOTSUPP;
3385
3386         drv_set_rekey_data(local, sdata, data);
3387
3388         return 0;
3389 }
3390
3391 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3392                                   const u8 *peer, u64 *cookie)
3393 {
3394         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3395         struct ieee80211_local *local = sdata->local;
3396         struct ieee80211_qos_hdr *nullfunc;
3397         struct sk_buff *skb;
3398         int size = sizeof(*nullfunc);
3399         __le16 fc;
3400         bool qos;
3401         struct ieee80211_tx_info *info;
3402         struct sta_info *sta;
3403         struct ieee80211_chanctx_conf *chanctx_conf;
3404         enum nl80211_band band;
3405         int ret;
3406
3407         /* the lock is needed to assign the cookie later */
3408         mutex_lock(&local->mtx);
3409
3410         rcu_read_lock();
3411         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3412         if (WARN_ON(!chanctx_conf)) {
3413                 ret = -EINVAL;
3414                 goto unlock;
3415         }
3416         band = chanctx_conf->def.chan->band;
3417         sta = sta_info_get_bss(sdata, peer);
3418         if (sta) {
3419                 qos = sta->sta.wme;
3420         } else {
3421                 ret = -ENOLINK;
3422                 goto unlock;
3423         }
3424
3425         if (qos) {
3426                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3427                                  IEEE80211_STYPE_QOS_NULLFUNC |
3428                                  IEEE80211_FCTL_FROMDS);
3429         } else {
3430                 size -= 2;
3431                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3432                                  IEEE80211_STYPE_NULLFUNC |
3433                                  IEEE80211_FCTL_FROMDS);
3434         }
3435
3436         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3437         if (!skb) {
3438                 ret = -ENOMEM;
3439                 goto unlock;
3440         }
3441
3442         skb->dev = dev;
3443
3444         skb_reserve(skb, local->hw.extra_tx_headroom);
3445
3446         nullfunc = skb_put(skb, size);
3447         nullfunc->frame_control = fc;
3448         nullfunc->duration_id = 0;
3449         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3450         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3451         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3452         nullfunc->seq_ctrl = 0;
3453
3454         info = IEEE80211_SKB_CB(skb);
3455
3456         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3457                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3458         info->band = band;
3459
3460         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3461         skb->priority = 7;
3462         if (qos)
3463                 nullfunc->qos_ctrl = cpu_to_le16(7);
3464
3465         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3466         if (ret) {
3467                 kfree_skb(skb);
3468                 goto unlock;
3469         }
3470
3471         local_bh_disable();
3472         ieee80211_xmit(sdata, sta, skb);
3473         local_bh_enable();
3474
3475         ret = 0;
3476 unlock:
3477         rcu_read_unlock();
3478         mutex_unlock(&local->mtx);
3479
3480         return ret;
3481 }
3482
3483 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3484                                      struct wireless_dev *wdev,
3485                                      struct cfg80211_chan_def *chandef)
3486 {
3487         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3488         struct ieee80211_local *local = wiphy_priv(wiphy);
3489         struct ieee80211_chanctx_conf *chanctx_conf;
3490         int ret = -ENODATA;
3491
3492         rcu_read_lock();
3493         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3494         if (chanctx_conf) {
3495                 *chandef = sdata->vif.bss_conf.chandef;
3496                 ret = 0;
3497         } else if (local->open_count > 0 &&
3498                    local->open_count == local->monitors &&
3499                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3500                 if (local->use_chanctx)
3501                         *chandef = local->monitor_chandef;
3502                 else
3503                         *chandef = local->_oper_chandef;
3504                 ret = 0;
3505         }
3506         rcu_read_unlock();
3507
3508         return ret;
3509 }
3510
3511 #ifdef CONFIG_PM
3512 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3513 {
3514         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3515 }
3516 #endif
3517
3518 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3519                                  struct net_device *dev,
3520                                  struct cfg80211_qos_map *qos_map)
3521 {
3522         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3523         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3524
3525         if (qos_map) {
3526                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3527                 if (!new_qos_map)
3528                         return -ENOMEM;
3529                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3530         } else {
3531                 /* A NULL qos_map was passed to disable QoS mapping */
3532                 new_qos_map = NULL;
3533         }
3534
3535         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3536         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3537         if (old_qos_map)
3538                 kfree_rcu(old_qos_map, rcu_head);
3539
3540         return 0;
3541 }
3542
3543 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3544                                       struct net_device *dev,
3545                                       struct cfg80211_chan_def *chandef)
3546 {
3547         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3548         int ret;
3549         u32 changed = 0;
3550
3551         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3552         if (ret == 0)
3553                 ieee80211_bss_info_change_notify(sdata, changed);
3554
3555         return ret;
3556 }
3557
3558 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3559                                u8 tsid, const u8 *peer, u8 up,
3560                                u16 admitted_time)
3561 {
3562         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3563         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3564         int ac = ieee802_1d_to_ac[up];
3565
3566         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3567                 return -EOPNOTSUPP;
3568
3569         if (!(sdata->wmm_acm & BIT(up)))
3570                 return -EINVAL;
3571
3572         if (ifmgd->tx_tspec[ac].admitted_time)
3573                 return -EBUSY;
3574
3575         if (admitted_time) {
3576                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3577                 ifmgd->tx_tspec[ac].tsid = tsid;
3578                 ifmgd->tx_tspec[ac].up = up;
3579         }
3580
3581         return 0;
3582 }
3583
3584 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3585                                u8 tsid, const u8 *peer)
3586 {
3587         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3588         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3589         struct ieee80211_local *local = wiphy_priv(wiphy);
3590         int ac;
3591
3592         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3593                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3594
3595                 /* skip unused entries */
3596                 if (!tx_tspec->admitted_time)
3597                         continue;
3598
3599                 if (tx_tspec->tsid != tsid)
3600                         continue;
3601
3602                 /* due to this new packets will be reassigned to non-ACM ACs */
3603                 tx_tspec->up = -1;
3604
3605                 /* Make sure that all packets have been sent to avoid to
3606                  * restore the QoS params on packets that are still on the
3607                  * queues.
3608                  */
3609                 synchronize_net();
3610                 ieee80211_flush_queues(local, sdata, false);
3611
3612                 /* restore the normal QoS parameters
3613                  * (unconditionally to avoid races)
3614                  */
3615                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3616                 tx_tspec->downgraded = false;
3617                 ieee80211_sta_handle_tspec_ac_params(sdata);
3618
3619                 /* finally clear all the data */
3620                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3621
3622                 return 0;
3623         }
3624
3625         return -ENOENT;
3626 }
3627
3628 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif,
3629                                    u8 inst_id,
3630                                    enum nl80211_nan_func_term_reason reason,
3631                                    gfp_t gfp)
3632 {
3633         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3634         struct cfg80211_nan_func *func;
3635         u64 cookie;
3636
3637         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3638                 return;
3639
3640         spin_lock_bh(&sdata->u.nan.func_lock);
3641
3642         func = idr_find(&sdata->u.nan.function_inst_ids, inst_id);
3643         if (WARN_ON(!func)) {
3644                 spin_unlock_bh(&sdata->u.nan.func_lock);
3645                 return;
3646         }
3647
3648         cookie = func->cookie;
3649         idr_remove(&sdata->u.nan.function_inst_ids, inst_id);
3650
3651         spin_unlock_bh(&sdata->u.nan.func_lock);
3652
3653         cfg80211_free_nan_func(func);
3654
3655         cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id,
3656                                      reason, cookie, gfp);
3657 }
3658 EXPORT_SYMBOL(ieee80211_nan_func_terminated);
3659
3660 void ieee80211_nan_func_match(struct ieee80211_vif *vif,
3661                               struct cfg80211_nan_match_params *match,
3662                               gfp_t gfp)
3663 {
3664         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
3665         struct cfg80211_nan_func *func;
3666
3667         if (WARN_ON(vif->type != NL80211_IFTYPE_NAN))
3668                 return;
3669
3670         spin_lock_bh(&sdata->u.nan.func_lock);
3671
3672         func = idr_find(&sdata->u.nan.function_inst_ids,  match->inst_id);
3673         if (WARN_ON(!func)) {
3674                 spin_unlock_bh(&sdata->u.nan.func_lock);
3675                 return;
3676         }
3677         match->cookie = func->cookie;
3678
3679         spin_unlock_bh(&sdata->u.nan.func_lock);
3680
3681         cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp);
3682 }
3683 EXPORT_SYMBOL(ieee80211_nan_func_match);
3684
3685 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy,
3686                                               struct net_device *dev,
3687                                               const bool enabled)
3688 {
3689         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3690
3691         sdata->u.ap.multicast_to_unicast = enabled;
3692
3693         return 0;
3694 }
3695
3696 const struct cfg80211_ops mac80211_config_ops = {
3697         .add_virtual_intf = ieee80211_add_iface,
3698         .del_virtual_intf = ieee80211_del_iface,
3699         .change_virtual_intf = ieee80211_change_iface,
3700         .start_p2p_device = ieee80211_start_p2p_device,
3701         .stop_p2p_device = ieee80211_stop_p2p_device,
3702         .add_key = ieee80211_add_key,
3703         .del_key = ieee80211_del_key,
3704         .get_key = ieee80211_get_key,
3705         .set_default_key = ieee80211_config_default_key,
3706         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3707         .start_ap = ieee80211_start_ap,
3708         .change_beacon = ieee80211_change_beacon,
3709         .stop_ap = ieee80211_stop_ap,
3710         .add_station = ieee80211_add_station,
3711         .del_station = ieee80211_del_station,
3712         .change_station = ieee80211_change_station,
3713         .get_station = ieee80211_get_station,
3714         .dump_station = ieee80211_dump_station,
3715         .dump_survey = ieee80211_dump_survey,
3716 #ifdef CONFIG_MAC80211_MESH
3717         .add_mpath = ieee80211_add_mpath,
3718         .del_mpath = ieee80211_del_mpath,
3719         .change_mpath = ieee80211_change_mpath,
3720         .get_mpath = ieee80211_get_mpath,
3721         .dump_mpath = ieee80211_dump_mpath,
3722         .get_mpp = ieee80211_get_mpp,
3723         .dump_mpp = ieee80211_dump_mpp,
3724         .update_mesh_config = ieee80211_update_mesh_config,
3725         .get_mesh_config = ieee80211_get_mesh_config,
3726         .join_mesh = ieee80211_join_mesh,
3727         .leave_mesh = ieee80211_leave_mesh,
3728 #endif
3729         .join_ocb = ieee80211_join_ocb,
3730         .leave_ocb = ieee80211_leave_ocb,
3731         .change_bss = ieee80211_change_bss,
3732         .set_txq_params = ieee80211_set_txq_params,
3733         .set_monitor_channel = ieee80211_set_monitor_channel,
3734         .suspend = ieee80211_suspend,
3735         .resume = ieee80211_resume,
3736         .scan = ieee80211_scan,
3737         .abort_scan = ieee80211_abort_scan,
3738         .sched_scan_start = ieee80211_sched_scan_start,
3739         .sched_scan_stop = ieee80211_sched_scan_stop,
3740         .auth = ieee80211_auth,
3741         .assoc = ieee80211_assoc,
3742         .deauth = ieee80211_deauth,
3743         .disassoc = ieee80211_disassoc,
3744         .join_ibss = ieee80211_join_ibss,
3745         .leave_ibss = ieee80211_leave_ibss,
3746         .set_mcast_rate = ieee80211_set_mcast_rate,
3747         .set_wiphy_params = ieee80211_set_wiphy_params,
3748         .set_tx_power = ieee80211_set_tx_power,
3749         .get_tx_power = ieee80211_get_tx_power,
3750         .set_wds_peer = ieee80211_set_wds_peer,
3751         .rfkill_poll = ieee80211_rfkill_poll,
3752         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3753         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3754         .set_power_mgmt = ieee80211_set_power_mgmt,
3755         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3756         .remain_on_channel = ieee80211_remain_on_channel,
3757         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3758         .mgmt_tx = ieee80211_mgmt_tx,
3759         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3760         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3761         .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config,
3762         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3763         .set_antenna = ieee80211_set_antenna,
3764         .get_antenna = ieee80211_get_antenna,
3765         .set_rekey_data = ieee80211_set_rekey_data,
3766         .tdls_oper = ieee80211_tdls_oper,
3767         .tdls_mgmt = ieee80211_tdls_mgmt,
3768         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3769         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3770         .probe_client = ieee80211_probe_client,
3771         .set_noack_map = ieee80211_set_noack_map,
3772 #ifdef CONFIG_PM
3773         .set_wakeup = ieee80211_set_wakeup,
3774 #endif
3775         .get_channel = ieee80211_cfg_get_channel,
3776         .start_radar_detection = ieee80211_start_radar_detection,
3777         .channel_switch = ieee80211_channel_switch,
3778         .set_qos_map = ieee80211_set_qos_map,
3779         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3780         .add_tx_ts = ieee80211_add_tx_ts,
3781         .del_tx_ts = ieee80211_del_tx_ts,
3782         .start_nan = ieee80211_start_nan,
3783         .stop_nan = ieee80211_stop_nan,
3784         .nan_change_conf = ieee80211_nan_change_conf,
3785         .add_nan_func = ieee80211_add_nan_func,
3786         .del_nan_func = ieee80211_del_nan_func,
3787         .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast,
3788 };