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 * 7 * This file is GPLv2 as found in COPYING. 8 */ 9 10 #include <linux/ieee80211.h> 11 #include <linux/nl80211.h> 12 #include <linux/rtnetlink.h> 13 #include <linux/slab.h> 14 #include <net/net_namespace.h> 15 #include <linux/rcupdate.h> 16 #include <linux/if_ether.h> 17 #include <net/cfg80211.h> 18 #include "ieee80211_i.h" 19 #include "driver-ops.h" 20 #include "cfg.h" 21 #include "rate.h" 22 #include "mesh.h" 23 #include "wme.h" 24 25 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 26 const char *name, 27 unsigned char name_assign_type, 28 enum nl80211_iftype type, 29 u32 *flags, 30 struct vif_params *params) 31 { 32 struct ieee80211_local *local = wiphy_priv(wiphy); 33 struct wireless_dev *wdev; 34 struct ieee80211_sub_if_data *sdata; 35 int err; 36 37 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 38 if (err) 39 return ERR_PTR(err); 40 41 if (type == NL80211_IFTYPE_MONITOR && flags) { 42 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 43 sdata->u.mntr_flags = *flags; 44 } 45 46 return wdev; 47 } 48 49 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 50 { 51 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 52 53 return 0; 54 } 55 56 static int ieee80211_change_iface(struct wiphy *wiphy, 57 struct net_device *dev, 58 enum nl80211_iftype type, u32 *flags, 59 struct vif_params *params) 60 { 61 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 62 int ret; 63 64 ret = ieee80211_if_change_type(sdata, type); 65 if (ret) 66 return ret; 67 68 if (type == NL80211_IFTYPE_AP_VLAN && 69 params && params->use_4addr == 0) 70 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 71 else if (type == NL80211_IFTYPE_STATION && 72 params && params->use_4addr >= 0) 73 sdata->u.mgd.use_4addr = params->use_4addr; 74 75 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 76 struct ieee80211_local *local = sdata->local; 77 78 if (ieee80211_sdata_running(sdata)) { 79 u32 mask = MONITOR_FLAG_COOK_FRAMES | 80 MONITOR_FLAG_ACTIVE; 81 82 /* 83 * Prohibit MONITOR_FLAG_COOK_FRAMES and 84 * MONITOR_FLAG_ACTIVE to be changed while the 85 * interface is up. 86 * Else we would need to add a lot of cruft 87 * to update everything: 88 * cooked_mntrs, monitor and all fif_* counters 89 * reconfigure hardware 90 */ 91 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 92 return -EBUSY; 93 94 ieee80211_adjust_monitor_flags(sdata, -1); 95 sdata->u.mntr_flags = *flags; 96 ieee80211_adjust_monitor_flags(sdata, 1); 97 98 ieee80211_configure_filter(local); 99 } else { 100 /* 101 * Because the interface is down, ieee80211_do_stop 102 * and ieee80211_do_open take care of "everything" 103 * mentioned in the comment above. 104 */ 105 sdata->u.mntr_flags = *flags; 106 } 107 } 108 109 return 0; 110 } 111 112 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 113 struct wireless_dev *wdev) 114 { 115 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 116 int ret; 117 118 mutex_lock(&sdata->local->chanctx_mtx); 119 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 120 mutex_unlock(&sdata->local->chanctx_mtx); 121 if (ret < 0) 122 return ret; 123 124 return ieee80211_do_open(wdev, true); 125 } 126 127 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 128 struct wireless_dev *wdev) 129 { 130 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 131 } 132 133 static int ieee80211_set_noack_map(struct wiphy *wiphy, 134 struct net_device *dev, 135 u16 noack_map) 136 { 137 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 138 139 sdata->noack_map = noack_map; 140 141 ieee80211_check_fast_xmit_iface(sdata); 142 143 return 0; 144 } 145 146 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 147 u8 key_idx, bool pairwise, const u8 *mac_addr, 148 struct key_params *params) 149 { 150 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 151 struct ieee80211_local *local = sdata->local; 152 struct sta_info *sta = NULL; 153 const struct ieee80211_cipher_scheme *cs = NULL; 154 struct ieee80211_key *key; 155 int err; 156 157 if (!ieee80211_sdata_running(sdata)) 158 return -ENETDOWN; 159 160 /* reject WEP and TKIP keys if WEP failed to initialize */ 161 switch (params->cipher) { 162 case WLAN_CIPHER_SUITE_WEP40: 163 case WLAN_CIPHER_SUITE_TKIP: 164 case WLAN_CIPHER_SUITE_WEP104: 165 if (IS_ERR(local->wep_tx_tfm)) 166 return -EINVAL; 167 break; 168 case WLAN_CIPHER_SUITE_CCMP: 169 case WLAN_CIPHER_SUITE_CCMP_256: 170 case WLAN_CIPHER_SUITE_AES_CMAC: 171 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 173 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 174 case WLAN_CIPHER_SUITE_GCMP: 175 case WLAN_CIPHER_SUITE_GCMP_256: 176 break; 177 default: 178 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 179 break; 180 } 181 182 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 183 params->key, params->seq_len, params->seq, 184 cs); 185 if (IS_ERR(key)) 186 return PTR_ERR(key); 187 188 if (pairwise) 189 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 190 191 mutex_lock(&local->sta_mtx); 192 193 if (mac_addr) { 194 if (ieee80211_vif_is_mesh(&sdata->vif)) 195 sta = sta_info_get(sdata, mac_addr); 196 else 197 sta = sta_info_get_bss(sdata, mac_addr); 198 /* 199 * The ASSOC test makes sure the driver is ready to 200 * receive the key. When wpa_supplicant has roamed 201 * using FT, it attempts to set the key before 202 * association has completed, this rejects that attempt 203 * so it will set the key again after association. 204 * 205 * TODO: accept the key if we have a station entry and 206 * add it to the device after the station. 207 */ 208 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 209 ieee80211_key_free_unused(key); 210 err = -ENOENT; 211 goto out_unlock; 212 } 213 } 214 215 switch (sdata->vif.type) { 216 case NL80211_IFTYPE_STATION: 217 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 218 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 219 break; 220 case NL80211_IFTYPE_AP: 221 case NL80211_IFTYPE_AP_VLAN: 222 /* Keys without a station are used for TX only */ 223 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 224 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 225 break; 226 case NL80211_IFTYPE_ADHOC: 227 /* no MFP (yet) */ 228 break; 229 case NL80211_IFTYPE_MESH_POINT: 230 #ifdef CONFIG_MAC80211_MESH 231 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 232 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 233 break; 234 #endif 235 case NL80211_IFTYPE_WDS: 236 case NL80211_IFTYPE_MONITOR: 237 case NL80211_IFTYPE_P2P_DEVICE: 238 case NL80211_IFTYPE_UNSPECIFIED: 239 case NUM_NL80211_IFTYPES: 240 case NL80211_IFTYPE_P2P_CLIENT: 241 case NL80211_IFTYPE_P2P_GO: 242 case NL80211_IFTYPE_OCB: 243 /* shouldn't happen */ 244 WARN_ON_ONCE(1); 245 break; 246 } 247 248 if (sta) 249 sta->cipher_scheme = cs; 250 251 err = ieee80211_key_link(key, sdata, sta); 252 253 out_unlock: 254 mutex_unlock(&local->sta_mtx); 255 256 return err; 257 } 258 259 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 260 u8 key_idx, bool pairwise, const u8 *mac_addr) 261 { 262 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 263 struct ieee80211_local *local = sdata->local; 264 struct sta_info *sta; 265 struct ieee80211_key *key = NULL; 266 int ret; 267 268 mutex_lock(&local->sta_mtx); 269 mutex_lock(&local->key_mtx); 270 271 if (mac_addr) { 272 ret = -ENOENT; 273 274 sta = sta_info_get_bss(sdata, mac_addr); 275 if (!sta) 276 goto out_unlock; 277 278 if (pairwise) 279 key = key_mtx_dereference(local, sta->ptk[key_idx]); 280 else 281 key = key_mtx_dereference(local, sta->gtk[key_idx]); 282 } else 283 key = key_mtx_dereference(local, sdata->keys[key_idx]); 284 285 if (!key) { 286 ret = -ENOENT; 287 goto out_unlock; 288 } 289 290 ieee80211_key_free(key, true); 291 292 ret = 0; 293 out_unlock: 294 mutex_unlock(&local->key_mtx); 295 mutex_unlock(&local->sta_mtx); 296 297 return ret; 298 } 299 300 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 301 u8 key_idx, bool pairwise, const u8 *mac_addr, 302 void *cookie, 303 void (*callback)(void *cookie, 304 struct key_params *params)) 305 { 306 struct ieee80211_sub_if_data *sdata; 307 struct sta_info *sta = NULL; 308 u8 seq[6] = {0}; 309 struct key_params params; 310 struct ieee80211_key *key = NULL; 311 u64 pn64; 312 u32 iv32; 313 u16 iv16; 314 int err = -ENOENT; 315 struct ieee80211_key_seq kseq = {}; 316 317 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 318 319 rcu_read_lock(); 320 321 if (mac_addr) { 322 sta = sta_info_get_bss(sdata, mac_addr); 323 if (!sta) 324 goto out; 325 326 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 327 key = rcu_dereference(sta->ptk[key_idx]); 328 else if (!pairwise && 329 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 330 key = rcu_dereference(sta->gtk[key_idx]); 331 } else 332 key = rcu_dereference(sdata->keys[key_idx]); 333 334 if (!key) 335 goto out; 336 337 memset(¶ms, 0, sizeof(params)); 338 339 params.cipher = key->conf.cipher; 340 341 switch (key->conf.cipher) { 342 case WLAN_CIPHER_SUITE_TKIP: 343 iv32 = key->u.tkip.tx.iv32; 344 iv16 = key->u.tkip.tx.iv16; 345 346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 348 drv_get_key_seq(sdata->local, key, &kseq); 349 iv32 = kseq.tkip.iv32; 350 iv16 = kseq.tkip.iv16; 351 } 352 353 seq[0] = iv16 & 0xff; 354 seq[1] = (iv16 >> 8) & 0xff; 355 seq[2] = iv32 & 0xff; 356 seq[3] = (iv32 >> 8) & 0xff; 357 seq[4] = (iv32 >> 16) & 0xff; 358 seq[5] = (iv32 >> 24) & 0xff; 359 params.seq = seq; 360 params.seq_len = 6; 361 break; 362 case WLAN_CIPHER_SUITE_CCMP: 363 case WLAN_CIPHER_SUITE_CCMP_256: 364 case WLAN_CIPHER_SUITE_AES_CMAC: 365 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 367 offsetof(typeof(kseq), aes_cmac)); 368 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 369 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 371 offsetof(typeof(kseq), aes_gmac)); 372 case WLAN_CIPHER_SUITE_GCMP: 373 case WLAN_CIPHER_SUITE_GCMP_256: 374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 375 offsetof(typeof(kseq), gcmp)); 376 377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 379 drv_get_key_seq(sdata->local, key, &kseq); 380 memcpy(seq, kseq.ccmp.pn, 6); 381 } else { 382 pn64 = atomic64_read(&key->conf.tx_pn); 383 seq[0] = pn64; 384 seq[1] = pn64 >> 8; 385 seq[2] = pn64 >> 16; 386 seq[3] = pn64 >> 24; 387 seq[4] = pn64 >> 32; 388 seq[5] = pn64 >> 40; 389 } 390 params.seq = seq; 391 params.seq_len = 6; 392 break; 393 default: 394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 395 break; 396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 397 break; 398 drv_get_key_seq(sdata->local, key, &kseq); 399 params.seq = kseq.hw.seq; 400 params.seq_len = kseq.hw.seq_len; 401 break; 402 } 403 404 params.key = key->conf.key; 405 params.key_len = key->conf.keylen; 406 407 callback(cookie, ¶ms); 408 err = 0; 409 410 out: 411 rcu_read_unlock(); 412 return err; 413 } 414 415 static int ieee80211_config_default_key(struct wiphy *wiphy, 416 struct net_device *dev, 417 u8 key_idx, bool uni, 418 bool multi) 419 { 420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 421 422 ieee80211_set_default_key(sdata, key_idx, uni, multi); 423 424 return 0; 425 } 426 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 428 struct net_device *dev, 429 u8 key_idx) 430 { 431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 432 433 ieee80211_set_default_mgmt_key(sdata, key_idx); 434 435 return 0; 436 } 437 438 void sta_set_rate_info_tx(struct sta_info *sta, 439 const struct ieee80211_tx_rate *rate, 440 struct rate_info *rinfo) 441 { 442 rinfo->flags = 0; 443 if (rate->flags & IEEE80211_TX_RC_MCS) { 444 rinfo->flags |= RATE_INFO_FLAGS_MCS; 445 rinfo->mcs = rate->idx; 446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 449 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 450 } else { 451 struct ieee80211_supported_band *sband; 452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 453 u16 brate; 454 455 sband = sta->local->hw.wiphy->bands[ 456 ieee80211_get_sdata_band(sta->sdata)]; 457 brate = sband->bitrates[rate->idx].bitrate; 458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 459 } 460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 461 rinfo->bw = RATE_INFO_BW_40; 462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_80; 464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_160; 466 else 467 rinfo->bw = RATE_INFO_BW_20; 468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 470 } 471 472 void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) 473 { 474 rinfo->flags = 0; 475 476 if (sta->last_rx_rate_flag & RX_FLAG_HT) { 477 rinfo->flags |= RATE_INFO_FLAGS_MCS; 478 rinfo->mcs = sta->last_rx_rate_idx; 479 } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { 480 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 481 rinfo->nss = sta->last_rx_rate_vht_nss; 482 rinfo->mcs = sta->last_rx_rate_idx; 483 } else { 484 struct ieee80211_supported_band *sband; 485 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 486 u16 brate; 487 488 sband = sta->local->hw.wiphy->bands[ 489 ieee80211_get_sdata_band(sta->sdata)]; 490 brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; 491 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 492 } 493 494 if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) 495 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 496 497 if (sta->last_rx_rate_flag & RX_FLAG_5MHZ) 498 rinfo->bw = RATE_INFO_BW_5; 499 else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ) 500 rinfo->bw = RATE_INFO_BW_10; 501 else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) 502 rinfo->bw = RATE_INFO_BW_40; 503 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) 504 rinfo->bw = RATE_INFO_BW_80; 505 else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) 506 rinfo->bw = RATE_INFO_BW_160; 507 else 508 rinfo->bw = RATE_INFO_BW_20; 509 } 510 511 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 512 int idx, u8 *mac, struct station_info *sinfo) 513 { 514 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 515 struct ieee80211_local *local = sdata->local; 516 struct sta_info *sta; 517 int ret = -ENOENT; 518 519 mutex_lock(&local->sta_mtx); 520 521 sta = sta_info_get_by_idx(sdata, idx); 522 if (sta) { 523 ret = 0; 524 memcpy(mac, sta->sta.addr, ETH_ALEN); 525 sta_set_sinfo(sta, sinfo); 526 } 527 528 mutex_unlock(&local->sta_mtx); 529 530 return ret; 531 } 532 533 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 534 int idx, struct survey_info *survey) 535 { 536 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 537 538 return drv_get_survey(local, idx, survey); 539 } 540 541 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 542 const u8 *mac, struct station_info *sinfo) 543 { 544 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 545 struct ieee80211_local *local = sdata->local; 546 struct sta_info *sta; 547 int ret = -ENOENT; 548 549 mutex_lock(&local->sta_mtx); 550 551 sta = sta_info_get_bss(sdata, mac); 552 if (sta) { 553 ret = 0; 554 sta_set_sinfo(sta, sinfo); 555 } 556 557 mutex_unlock(&local->sta_mtx); 558 559 return ret; 560 } 561 562 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 563 struct cfg80211_chan_def *chandef) 564 { 565 struct ieee80211_local *local = wiphy_priv(wiphy); 566 struct ieee80211_sub_if_data *sdata; 567 int ret = 0; 568 569 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 570 return 0; 571 572 mutex_lock(&local->mtx); 573 mutex_lock(&local->iflist_mtx); 574 if (local->use_chanctx) { 575 sdata = rcu_dereference_protected( 576 local->monitor_sdata, 577 lockdep_is_held(&local->iflist_mtx)); 578 if (sdata) { 579 ieee80211_vif_release_channel(sdata); 580 ret = ieee80211_vif_use_channel(sdata, chandef, 581 IEEE80211_CHANCTX_EXCLUSIVE); 582 } 583 } else if (local->open_count == local->monitors) { 584 local->_oper_chandef = *chandef; 585 ieee80211_hw_config(local, 0); 586 } 587 588 if (ret == 0) 589 local->monitor_chandef = *chandef; 590 mutex_unlock(&local->iflist_mtx); 591 mutex_unlock(&local->mtx); 592 593 return ret; 594 } 595 596 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 597 const u8 *resp, size_t resp_len, 598 const struct ieee80211_csa_settings *csa) 599 { 600 struct probe_resp *new, *old; 601 602 if (!resp || !resp_len) 603 return 1; 604 605 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 606 607 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 608 if (!new) 609 return -ENOMEM; 610 611 new->len = resp_len; 612 memcpy(new->data, resp, resp_len); 613 614 if (csa) 615 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 616 csa->n_counter_offsets_presp * 617 sizeof(new->csa_counter_offsets[0])); 618 619 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 620 if (old) 621 kfree_rcu(old, rcu_head); 622 623 return 0; 624 } 625 626 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 627 struct cfg80211_beacon_data *params, 628 const struct ieee80211_csa_settings *csa) 629 { 630 struct beacon_data *new, *old; 631 int new_head_len, new_tail_len; 632 int size, err; 633 u32 changed = BSS_CHANGED_BEACON; 634 635 old = sdata_dereference(sdata->u.ap.beacon, sdata); 636 637 638 /* Need to have a beacon head if we don't have one yet */ 639 if (!params->head && !old) 640 return -EINVAL; 641 642 /* new or old head? */ 643 if (params->head) 644 new_head_len = params->head_len; 645 else 646 new_head_len = old->head_len; 647 648 /* new or old tail? */ 649 if (params->tail || !old) 650 /* params->tail_len will be zero for !params->tail */ 651 new_tail_len = params->tail_len; 652 else 653 new_tail_len = old->tail_len; 654 655 size = sizeof(*new) + new_head_len + new_tail_len; 656 657 new = kzalloc(size, GFP_KERNEL); 658 if (!new) 659 return -ENOMEM; 660 661 /* start filling the new info now */ 662 663 /* 664 * pointers go into the block we allocated, 665 * memory is | beacon_data | head | tail | 666 */ 667 new->head = ((u8 *) new) + sizeof(*new); 668 new->tail = new->head + new_head_len; 669 new->head_len = new_head_len; 670 new->tail_len = new_tail_len; 671 672 if (csa) { 673 new->csa_current_counter = csa->count; 674 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 675 csa->n_counter_offsets_beacon * 676 sizeof(new->csa_counter_offsets[0])); 677 } 678 679 /* copy in head */ 680 if (params->head) 681 memcpy(new->head, params->head, new_head_len); 682 else 683 memcpy(new->head, old->head, new_head_len); 684 685 /* copy in optional tail */ 686 if (params->tail) 687 memcpy(new->tail, params->tail, new_tail_len); 688 else 689 if (old) 690 memcpy(new->tail, old->tail, new_tail_len); 691 692 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 693 params->probe_resp_len, csa); 694 if (err < 0) 695 return err; 696 if (err == 0) 697 changed |= BSS_CHANGED_AP_PROBE_RESP; 698 699 rcu_assign_pointer(sdata->u.ap.beacon, new); 700 701 if (old) 702 kfree_rcu(old, rcu_head); 703 704 return changed; 705 } 706 707 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 708 struct cfg80211_ap_settings *params) 709 { 710 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 711 struct ieee80211_local *local = sdata->local; 712 struct beacon_data *old; 713 struct ieee80211_sub_if_data *vlan; 714 u32 changed = BSS_CHANGED_BEACON_INT | 715 BSS_CHANGED_BEACON_ENABLED | 716 BSS_CHANGED_BEACON | 717 BSS_CHANGED_SSID | 718 BSS_CHANGED_P2P_PS | 719 BSS_CHANGED_TXPOWER; 720 int err; 721 722 old = sdata_dereference(sdata->u.ap.beacon, sdata); 723 if (old) 724 return -EALREADY; 725 726 switch (params->smps_mode) { 727 case NL80211_SMPS_OFF: 728 sdata->smps_mode = IEEE80211_SMPS_OFF; 729 break; 730 case NL80211_SMPS_STATIC: 731 sdata->smps_mode = IEEE80211_SMPS_STATIC; 732 break; 733 case NL80211_SMPS_DYNAMIC: 734 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 735 break; 736 default: 737 return -EINVAL; 738 } 739 sdata->needed_rx_chains = sdata->local->rx_chains; 740 741 mutex_lock(&local->mtx); 742 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 743 IEEE80211_CHANCTX_SHARED); 744 if (!err) 745 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 746 mutex_unlock(&local->mtx); 747 if (err) 748 return err; 749 750 /* 751 * Apply control port protocol, this allows us to 752 * not encrypt dynamic WEP control frames. 753 */ 754 sdata->control_port_protocol = params->crypto.control_port_ethertype; 755 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 756 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 757 ¶ms->crypto, 758 sdata->vif.type); 759 760 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 761 vlan->control_port_protocol = 762 params->crypto.control_port_ethertype; 763 vlan->control_port_no_encrypt = 764 params->crypto.control_port_no_encrypt; 765 vlan->encrypt_headroom = 766 ieee80211_cs_headroom(sdata->local, 767 ¶ms->crypto, 768 vlan->vif.type); 769 } 770 771 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 772 sdata->vif.bss_conf.dtim_period = params->dtim_period; 773 sdata->vif.bss_conf.enable_beacon = true; 774 775 sdata->vif.bss_conf.ssid_len = params->ssid_len; 776 if (params->ssid_len) 777 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 778 params->ssid_len); 779 sdata->vif.bss_conf.hidden_ssid = 780 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 781 782 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 783 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 784 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 785 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 786 if (params->p2p_opp_ps) 787 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 788 IEEE80211_P2P_OPPPS_ENABLE_BIT; 789 790 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 791 if (err < 0) { 792 ieee80211_vif_release_channel(sdata); 793 return err; 794 } 795 changed |= err; 796 797 err = drv_start_ap(sdata->local, sdata); 798 if (err) { 799 old = sdata_dereference(sdata->u.ap.beacon, sdata); 800 801 if (old) 802 kfree_rcu(old, rcu_head); 803 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 804 ieee80211_vif_release_channel(sdata); 805 return err; 806 } 807 808 ieee80211_recalc_dtim(local, sdata); 809 ieee80211_bss_info_change_notify(sdata, changed); 810 811 netif_carrier_on(dev); 812 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 813 netif_carrier_on(vlan->dev); 814 815 return 0; 816 } 817 818 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 819 struct cfg80211_beacon_data *params) 820 { 821 struct ieee80211_sub_if_data *sdata; 822 struct beacon_data *old; 823 int err; 824 825 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 826 sdata_assert_lock(sdata); 827 828 /* don't allow changing the beacon while CSA is in place - offset 829 * of channel switch counter may change 830 */ 831 if (sdata->vif.csa_active) 832 return -EBUSY; 833 834 old = sdata_dereference(sdata->u.ap.beacon, sdata); 835 if (!old) 836 return -ENOENT; 837 838 err = ieee80211_assign_beacon(sdata, params, NULL); 839 if (err < 0) 840 return err; 841 ieee80211_bss_info_change_notify(sdata, err); 842 return 0; 843 } 844 845 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 846 { 847 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 848 struct ieee80211_sub_if_data *vlan; 849 struct ieee80211_local *local = sdata->local; 850 struct beacon_data *old_beacon; 851 struct probe_resp *old_probe_resp; 852 struct cfg80211_chan_def chandef; 853 854 sdata_assert_lock(sdata); 855 856 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 857 if (!old_beacon) 858 return -ENOENT; 859 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 860 861 /* abort any running channel switch */ 862 mutex_lock(&local->mtx); 863 sdata->vif.csa_active = false; 864 if (sdata->csa_block_tx) { 865 ieee80211_wake_vif_queues(local, sdata, 866 IEEE80211_QUEUE_STOP_REASON_CSA); 867 sdata->csa_block_tx = false; 868 } 869 870 mutex_unlock(&local->mtx); 871 872 kfree(sdata->u.ap.next_beacon); 873 sdata->u.ap.next_beacon = NULL; 874 875 /* turn off carrier for this interface and dependent VLANs */ 876 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 877 netif_carrier_off(vlan->dev); 878 netif_carrier_off(dev); 879 880 /* remove beacon and probe response */ 881 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 882 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 883 kfree_rcu(old_beacon, rcu_head); 884 if (old_probe_resp) 885 kfree_rcu(old_probe_resp, rcu_head); 886 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 887 888 __sta_info_flush(sdata, true); 889 ieee80211_free_keys(sdata, true); 890 891 sdata->vif.bss_conf.enable_beacon = false; 892 sdata->vif.bss_conf.ssid_len = 0; 893 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 894 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 895 896 if (sdata->wdev.cac_started) { 897 chandef = sdata->vif.bss_conf.chandef; 898 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 899 cfg80211_cac_event(sdata->dev, &chandef, 900 NL80211_RADAR_CAC_ABORTED, 901 GFP_KERNEL); 902 } 903 904 drv_stop_ap(sdata->local, sdata); 905 906 /* free all potentially still buffered bcast frames */ 907 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 908 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 909 910 mutex_lock(&local->mtx); 911 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 912 ieee80211_vif_release_channel(sdata); 913 mutex_unlock(&local->mtx); 914 915 return 0; 916 } 917 918 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 919 struct iapp_layer2_update { 920 u8 da[ETH_ALEN]; /* broadcast */ 921 u8 sa[ETH_ALEN]; /* STA addr */ 922 __be16 len; /* 6 */ 923 u8 dsap; /* 0 */ 924 u8 ssap; /* 0 */ 925 u8 control; 926 u8 xid_info[3]; 927 } __packed; 928 929 static void ieee80211_send_layer2_update(struct sta_info *sta) 930 { 931 struct iapp_layer2_update *msg; 932 struct sk_buff *skb; 933 934 /* Send Level 2 Update Frame to update forwarding tables in layer 2 935 * bridge devices */ 936 937 skb = dev_alloc_skb(sizeof(*msg)); 938 if (!skb) 939 return; 940 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 941 942 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 943 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 944 945 eth_broadcast_addr(msg->da); 946 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 947 msg->len = htons(6); 948 msg->dsap = 0; 949 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 950 msg->control = 0xaf; /* XID response lsb.1111F101. 951 * F=0 (no poll command; unsolicited frame) */ 952 msg->xid_info[0] = 0x81; /* XID format identifier */ 953 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 954 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 955 956 skb->dev = sta->sdata->dev; 957 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 958 memset(skb->cb, 0, sizeof(skb->cb)); 959 netif_rx_ni(skb); 960 } 961 962 static int sta_apply_auth_flags(struct ieee80211_local *local, 963 struct sta_info *sta, 964 u32 mask, u32 set) 965 { 966 int ret; 967 968 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 969 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 970 !test_sta_flag(sta, WLAN_STA_AUTH)) { 971 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 972 if (ret) 973 return ret; 974 } 975 976 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 977 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 978 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 979 /* 980 * When peer becomes associated, init rate control as 981 * well. Some drivers require rate control initialized 982 * before drv_sta_state() is called. 983 */ 984 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 985 rate_control_rate_init(sta); 986 987 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 988 if (ret) 989 return ret; 990 } 991 992 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 993 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 994 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 995 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 996 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 997 else 998 ret = 0; 999 if (ret) 1000 return ret; 1001 } 1002 1003 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1004 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1005 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1006 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1007 if (ret) 1008 return ret; 1009 } 1010 1011 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1012 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1013 test_sta_flag(sta, WLAN_STA_AUTH)) { 1014 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1015 if (ret) 1016 return ret; 1017 } 1018 1019 return 0; 1020 } 1021 1022 static int sta_apply_parameters(struct ieee80211_local *local, 1023 struct sta_info *sta, 1024 struct station_parameters *params) 1025 { 1026 int ret = 0; 1027 struct ieee80211_supported_band *sband; 1028 struct ieee80211_sub_if_data *sdata = sta->sdata; 1029 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1030 u32 mask, set; 1031 1032 sband = local->hw.wiphy->bands[band]; 1033 1034 mask = params->sta_flags_mask; 1035 set = params->sta_flags_set; 1036 1037 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1038 /* 1039 * In mesh mode, ASSOCIATED isn't part of the nl80211 1040 * API but must follow AUTHENTICATED for driver state. 1041 */ 1042 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1043 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1044 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1045 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1046 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1047 /* 1048 * TDLS -- everything follows authorized, but 1049 * only becoming authorized is possible, not 1050 * going back 1051 */ 1052 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1053 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1054 BIT(NL80211_STA_FLAG_ASSOCIATED); 1055 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1056 BIT(NL80211_STA_FLAG_ASSOCIATED); 1057 } 1058 } 1059 1060 if (mask & BIT(NL80211_STA_FLAG_WME) && 1061 local->hw.queues >= IEEE80211_NUM_ACS) 1062 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1063 1064 /* auth flags will be set later for TDLS stations */ 1065 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1066 ret = sta_apply_auth_flags(local, sta, mask, set); 1067 if (ret) 1068 return ret; 1069 } 1070 1071 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1072 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1073 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1074 else 1075 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1076 } 1077 1078 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1079 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1080 if (set & BIT(NL80211_STA_FLAG_MFP)) 1081 set_sta_flag(sta, WLAN_STA_MFP); 1082 else 1083 clear_sta_flag(sta, WLAN_STA_MFP); 1084 } 1085 1086 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1087 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1088 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1089 else 1090 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1091 } 1092 1093 /* mark TDLS channel switch support, if the AP allows it */ 1094 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1095 !sdata->u.mgd.tdls_chan_switch_prohibited && 1096 params->ext_capab_len >= 4 && 1097 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1098 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1099 1100 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1101 sta->sta.uapsd_queues = params->uapsd_queues; 1102 sta->sta.max_sp = params->max_sp; 1103 } 1104 1105 /* 1106 * cfg80211 validates this (1-2007) and allows setting the AID 1107 * only when creating a new station entry 1108 */ 1109 if (params->aid) 1110 sta->sta.aid = params->aid; 1111 1112 /* 1113 * Some of the following updates would be racy if called on an 1114 * existing station, via ieee80211_change_station(). However, 1115 * all such changes are rejected by cfg80211 except for updates 1116 * changing the supported rates on an existing but not yet used 1117 * TDLS peer. 1118 */ 1119 1120 if (params->listen_interval >= 0) 1121 sta->listen_interval = params->listen_interval; 1122 1123 if (params->supported_rates) { 1124 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1125 sband, params->supported_rates, 1126 params->supported_rates_len, 1127 &sta->sta.supp_rates[band]); 1128 } 1129 1130 if (params->ht_capa) 1131 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1132 params->ht_capa, sta); 1133 1134 if (params->vht_capa) 1135 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1136 params->vht_capa, sta); 1137 1138 if (params->opmode_notif_used) { 1139 /* returned value is only needed for rc update, but the 1140 * rc isn't initialized here yet, so ignore it 1141 */ 1142 __ieee80211_vht_handle_opmode(sdata, sta, 1143 params->opmode_notif, 1144 band, false); 1145 } 1146 1147 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1148 #ifdef CONFIG_MAC80211_MESH 1149 u32 changed = 0; 1150 1151 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1152 switch (params->plink_state) { 1153 case NL80211_PLINK_ESTAB: 1154 if (sta->plink_state != NL80211_PLINK_ESTAB) 1155 changed = mesh_plink_inc_estab_count( 1156 sdata); 1157 sta->plink_state = params->plink_state; 1158 1159 ieee80211_mps_sta_status_update(sta); 1160 changed |= ieee80211_mps_set_sta_local_pm(sta, 1161 sdata->u.mesh.mshcfg.power_mode); 1162 break; 1163 case NL80211_PLINK_LISTEN: 1164 case NL80211_PLINK_BLOCKED: 1165 case NL80211_PLINK_OPN_SNT: 1166 case NL80211_PLINK_OPN_RCVD: 1167 case NL80211_PLINK_CNF_RCVD: 1168 case NL80211_PLINK_HOLDING: 1169 if (sta->plink_state == NL80211_PLINK_ESTAB) 1170 changed = mesh_plink_dec_estab_count( 1171 sdata); 1172 sta->plink_state = params->plink_state; 1173 1174 ieee80211_mps_sta_status_update(sta); 1175 changed |= ieee80211_mps_set_sta_local_pm(sta, 1176 NL80211_MESH_POWER_UNKNOWN); 1177 break; 1178 default: 1179 /* nothing */ 1180 break; 1181 } 1182 } 1183 1184 switch (params->plink_action) { 1185 case NL80211_PLINK_ACTION_NO_ACTION: 1186 /* nothing */ 1187 break; 1188 case NL80211_PLINK_ACTION_OPEN: 1189 changed |= mesh_plink_open(sta); 1190 break; 1191 case NL80211_PLINK_ACTION_BLOCK: 1192 changed |= mesh_plink_block(sta); 1193 break; 1194 } 1195 1196 if (params->local_pm) 1197 changed |= 1198 ieee80211_mps_set_sta_local_pm(sta, 1199 params->local_pm); 1200 ieee80211_mbss_info_change_notify(sdata, changed); 1201 #endif 1202 } 1203 1204 /* set the STA state after all sta info from usermode has been set */ 1205 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1206 ret = sta_apply_auth_flags(local, sta, mask, set); 1207 if (ret) 1208 return ret; 1209 } 1210 1211 return 0; 1212 } 1213 1214 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1215 const u8 *mac, 1216 struct station_parameters *params) 1217 { 1218 struct ieee80211_local *local = wiphy_priv(wiphy); 1219 struct sta_info *sta; 1220 struct ieee80211_sub_if_data *sdata; 1221 int err; 1222 int layer2_update; 1223 1224 if (params->vlan) { 1225 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1226 1227 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1228 sdata->vif.type != NL80211_IFTYPE_AP) 1229 return -EINVAL; 1230 } else 1231 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1232 1233 if (ether_addr_equal(mac, sdata->vif.addr)) 1234 return -EINVAL; 1235 1236 if (is_multicast_ether_addr(mac)) 1237 return -EINVAL; 1238 1239 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1240 if (!sta) 1241 return -ENOMEM; 1242 1243 /* 1244 * defaults -- if userspace wants something else we'll 1245 * change it accordingly in sta_apply_parameters() 1246 */ 1247 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { 1248 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); 1249 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); 1250 } else { 1251 sta->sta.tdls = true; 1252 } 1253 1254 err = sta_apply_parameters(local, sta, params); 1255 if (err) { 1256 sta_info_free(local, sta); 1257 return err; 1258 } 1259 1260 /* 1261 * for TDLS, rate control should be initialized only when 1262 * rates are known and station is marked authorized 1263 */ 1264 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) 1265 rate_control_rate_init(sta); 1266 1267 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1268 sdata->vif.type == NL80211_IFTYPE_AP; 1269 1270 err = sta_info_insert_rcu(sta); 1271 if (err) { 1272 rcu_read_unlock(); 1273 return err; 1274 } 1275 1276 if (layer2_update) 1277 ieee80211_send_layer2_update(sta); 1278 1279 rcu_read_unlock(); 1280 1281 return 0; 1282 } 1283 1284 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1285 struct station_del_parameters *params) 1286 { 1287 struct ieee80211_sub_if_data *sdata; 1288 1289 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1290 1291 if (params->mac) 1292 return sta_info_destroy_addr_bss(sdata, params->mac); 1293 1294 sta_info_flush(sdata); 1295 return 0; 1296 } 1297 1298 static int ieee80211_change_station(struct wiphy *wiphy, 1299 struct net_device *dev, const u8 *mac, 1300 struct station_parameters *params) 1301 { 1302 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1303 struct ieee80211_local *local = wiphy_priv(wiphy); 1304 struct sta_info *sta; 1305 struct ieee80211_sub_if_data *vlansdata; 1306 enum cfg80211_station_type statype; 1307 int err; 1308 1309 mutex_lock(&local->sta_mtx); 1310 1311 sta = sta_info_get_bss(sdata, mac); 1312 if (!sta) { 1313 err = -ENOENT; 1314 goto out_err; 1315 } 1316 1317 switch (sdata->vif.type) { 1318 case NL80211_IFTYPE_MESH_POINT: 1319 if (sdata->u.mesh.user_mpm) 1320 statype = CFG80211_STA_MESH_PEER_USER; 1321 else 1322 statype = CFG80211_STA_MESH_PEER_KERNEL; 1323 break; 1324 case NL80211_IFTYPE_ADHOC: 1325 statype = CFG80211_STA_IBSS; 1326 break; 1327 case NL80211_IFTYPE_STATION: 1328 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1329 statype = CFG80211_STA_AP_STA; 1330 break; 1331 } 1332 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1333 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1334 else 1335 statype = CFG80211_STA_TDLS_PEER_SETUP; 1336 break; 1337 case NL80211_IFTYPE_AP: 1338 case NL80211_IFTYPE_AP_VLAN: 1339 statype = CFG80211_STA_AP_CLIENT; 1340 break; 1341 default: 1342 err = -EOPNOTSUPP; 1343 goto out_err; 1344 } 1345 1346 err = cfg80211_check_station_change(wiphy, params, statype); 1347 if (err) 1348 goto out_err; 1349 1350 if (params->vlan && params->vlan != sta->sdata->dev) { 1351 bool prev_4addr = false; 1352 bool new_4addr = false; 1353 1354 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1355 1356 if (params->vlan->ieee80211_ptr->use_4addr) { 1357 if (vlansdata->u.vlan.sta) { 1358 err = -EBUSY; 1359 goto out_err; 1360 } 1361 1362 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1363 new_4addr = true; 1364 } 1365 1366 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1367 sta->sdata->u.vlan.sta) { 1368 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1369 prev_4addr = true; 1370 } 1371 1372 sta->sdata = vlansdata; 1373 ieee80211_check_fast_xmit(sta); 1374 1375 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1376 prev_4addr != new_4addr) { 1377 if (new_4addr) 1378 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1379 else 1380 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1381 } 1382 1383 ieee80211_send_layer2_update(sta); 1384 } 1385 1386 err = sta_apply_parameters(local, sta, params); 1387 if (err) 1388 goto out_err; 1389 1390 mutex_unlock(&local->sta_mtx); 1391 1392 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1393 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1394 sta->known_smps_mode != sta->sdata->bss->req_smps && 1395 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1396 sta_info_tx_streams(sta) != 1) { 1397 ht_dbg(sta->sdata, 1398 "%pM just authorized and MIMO capable - update SMPS\n", 1399 sta->sta.addr); 1400 ieee80211_send_smps_action(sta->sdata, 1401 sta->sdata->bss->req_smps, 1402 sta->sta.addr, 1403 sta->sdata->vif.bss_conf.bssid); 1404 } 1405 1406 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1407 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1408 ieee80211_recalc_ps(local, -1); 1409 ieee80211_recalc_ps_vif(sdata); 1410 } 1411 1412 return 0; 1413 out_err: 1414 mutex_unlock(&local->sta_mtx); 1415 return err; 1416 } 1417 1418 #ifdef CONFIG_MAC80211_MESH 1419 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1420 const u8 *dst, const u8 *next_hop) 1421 { 1422 struct ieee80211_sub_if_data *sdata; 1423 struct mesh_path *mpath; 1424 struct sta_info *sta; 1425 1426 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1427 1428 rcu_read_lock(); 1429 sta = sta_info_get(sdata, next_hop); 1430 if (!sta) { 1431 rcu_read_unlock(); 1432 return -ENOENT; 1433 } 1434 1435 mpath = mesh_path_add(sdata, dst); 1436 if (IS_ERR(mpath)) { 1437 rcu_read_unlock(); 1438 return PTR_ERR(mpath); 1439 } 1440 1441 mesh_path_fix_nexthop(mpath, sta); 1442 1443 rcu_read_unlock(); 1444 return 0; 1445 } 1446 1447 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1448 const u8 *dst) 1449 { 1450 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1451 1452 if (dst) 1453 return mesh_path_del(sdata, dst); 1454 1455 mesh_path_flush_by_iface(sdata); 1456 return 0; 1457 } 1458 1459 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1460 const u8 *dst, const u8 *next_hop) 1461 { 1462 struct ieee80211_sub_if_data *sdata; 1463 struct mesh_path *mpath; 1464 struct sta_info *sta; 1465 1466 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1467 1468 rcu_read_lock(); 1469 1470 sta = sta_info_get(sdata, next_hop); 1471 if (!sta) { 1472 rcu_read_unlock(); 1473 return -ENOENT; 1474 } 1475 1476 mpath = mesh_path_lookup(sdata, dst); 1477 if (!mpath) { 1478 rcu_read_unlock(); 1479 return -ENOENT; 1480 } 1481 1482 mesh_path_fix_nexthop(mpath, sta); 1483 1484 rcu_read_unlock(); 1485 return 0; 1486 } 1487 1488 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1489 struct mpath_info *pinfo) 1490 { 1491 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1492 1493 if (next_hop_sta) 1494 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1495 else 1496 eth_zero_addr(next_hop); 1497 1498 memset(pinfo, 0, sizeof(*pinfo)); 1499 1500 pinfo->generation = mesh_paths_generation; 1501 1502 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1503 MPATH_INFO_SN | 1504 MPATH_INFO_METRIC | 1505 MPATH_INFO_EXPTIME | 1506 MPATH_INFO_DISCOVERY_TIMEOUT | 1507 MPATH_INFO_DISCOVERY_RETRIES | 1508 MPATH_INFO_FLAGS; 1509 1510 pinfo->frame_qlen = mpath->frame_queue.qlen; 1511 pinfo->sn = mpath->sn; 1512 pinfo->metric = mpath->metric; 1513 if (time_before(jiffies, mpath->exp_time)) 1514 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1515 pinfo->discovery_timeout = 1516 jiffies_to_msecs(mpath->discovery_timeout); 1517 pinfo->discovery_retries = mpath->discovery_retries; 1518 if (mpath->flags & MESH_PATH_ACTIVE) 1519 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1520 if (mpath->flags & MESH_PATH_RESOLVING) 1521 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1522 if (mpath->flags & MESH_PATH_SN_VALID) 1523 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1524 if (mpath->flags & MESH_PATH_FIXED) 1525 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1526 if (mpath->flags & MESH_PATH_RESOLVED) 1527 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1528 } 1529 1530 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1531 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1532 1533 { 1534 struct ieee80211_sub_if_data *sdata; 1535 struct mesh_path *mpath; 1536 1537 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1538 1539 rcu_read_lock(); 1540 mpath = mesh_path_lookup(sdata, dst); 1541 if (!mpath) { 1542 rcu_read_unlock(); 1543 return -ENOENT; 1544 } 1545 memcpy(dst, mpath->dst, ETH_ALEN); 1546 mpath_set_pinfo(mpath, next_hop, pinfo); 1547 rcu_read_unlock(); 1548 return 0; 1549 } 1550 1551 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1552 int idx, u8 *dst, u8 *next_hop, 1553 struct mpath_info *pinfo) 1554 { 1555 struct ieee80211_sub_if_data *sdata; 1556 struct mesh_path *mpath; 1557 1558 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1559 1560 rcu_read_lock(); 1561 mpath = mesh_path_lookup_by_idx(sdata, idx); 1562 if (!mpath) { 1563 rcu_read_unlock(); 1564 return -ENOENT; 1565 } 1566 memcpy(dst, mpath->dst, ETH_ALEN); 1567 mpath_set_pinfo(mpath, next_hop, pinfo); 1568 rcu_read_unlock(); 1569 return 0; 1570 } 1571 1572 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1573 struct mpath_info *pinfo) 1574 { 1575 memset(pinfo, 0, sizeof(*pinfo)); 1576 memcpy(mpp, mpath->mpp, ETH_ALEN); 1577 1578 pinfo->generation = mpp_paths_generation; 1579 } 1580 1581 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1582 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1583 1584 { 1585 struct ieee80211_sub_if_data *sdata; 1586 struct mesh_path *mpath; 1587 1588 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1589 1590 rcu_read_lock(); 1591 mpath = mpp_path_lookup(sdata, dst); 1592 if (!mpath) { 1593 rcu_read_unlock(); 1594 return -ENOENT; 1595 } 1596 memcpy(dst, mpath->dst, ETH_ALEN); 1597 mpp_set_pinfo(mpath, mpp, pinfo); 1598 rcu_read_unlock(); 1599 return 0; 1600 } 1601 1602 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1603 int idx, u8 *dst, u8 *mpp, 1604 struct mpath_info *pinfo) 1605 { 1606 struct ieee80211_sub_if_data *sdata; 1607 struct mesh_path *mpath; 1608 1609 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1610 1611 rcu_read_lock(); 1612 mpath = mpp_path_lookup_by_idx(sdata, idx); 1613 if (!mpath) { 1614 rcu_read_unlock(); 1615 return -ENOENT; 1616 } 1617 memcpy(dst, mpath->dst, ETH_ALEN); 1618 mpp_set_pinfo(mpath, mpp, pinfo); 1619 rcu_read_unlock(); 1620 return 0; 1621 } 1622 1623 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1624 struct net_device *dev, 1625 struct mesh_config *conf) 1626 { 1627 struct ieee80211_sub_if_data *sdata; 1628 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1629 1630 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1631 return 0; 1632 } 1633 1634 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1635 { 1636 return (mask >> (parm-1)) & 0x1; 1637 } 1638 1639 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1640 const struct mesh_setup *setup) 1641 { 1642 u8 *new_ie; 1643 const u8 *old_ie; 1644 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1645 struct ieee80211_sub_if_data, u.mesh); 1646 1647 /* allocate information elements */ 1648 new_ie = NULL; 1649 old_ie = ifmsh->ie; 1650 1651 if (setup->ie_len) { 1652 new_ie = kmemdup(setup->ie, setup->ie_len, 1653 GFP_KERNEL); 1654 if (!new_ie) 1655 return -ENOMEM; 1656 } 1657 ifmsh->ie_len = setup->ie_len; 1658 ifmsh->ie = new_ie; 1659 kfree(old_ie); 1660 1661 /* now copy the rest of the setup parameters */ 1662 ifmsh->mesh_id_len = setup->mesh_id_len; 1663 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1664 ifmsh->mesh_sp_id = setup->sync_method; 1665 ifmsh->mesh_pp_id = setup->path_sel_proto; 1666 ifmsh->mesh_pm_id = setup->path_metric; 1667 ifmsh->user_mpm = setup->user_mpm; 1668 ifmsh->mesh_auth_id = setup->auth_id; 1669 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1670 if (setup->is_authenticated) 1671 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1672 if (setup->is_secure) 1673 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1674 1675 /* mcast rate setting in Mesh Node */ 1676 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1677 sizeof(setup->mcast_rate)); 1678 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1679 1680 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1681 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1682 1683 return 0; 1684 } 1685 1686 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1687 struct net_device *dev, u32 mask, 1688 const struct mesh_config *nconf) 1689 { 1690 struct mesh_config *conf; 1691 struct ieee80211_sub_if_data *sdata; 1692 struct ieee80211_if_mesh *ifmsh; 1693 1694 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1695 ifmsh = &sdata->u.mesh; 1696 1697 /* Set the config options which we are interested in setting */ 1698 conf = &(sdata->u.mesh.mshcfg); 1699 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1700 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1701 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1702 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1703 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1704 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1705 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1706 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1707 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1708 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1709 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1710 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1711 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1712 conf->element_ttl = nconf->element_ttl; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1714 if (ifmsh->user_mpm) 1715 return -EBUSY; 1716 conf->auto_open_plinks = nconf->auto_open_plinks; 1717 } 1718 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1719 conf->dot11MeshNbrOffsetMaxNeighbor = 1720 nconf->dot11MeshNbrOffsetMaxNeighbor; 1721 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1722 conf->dot11MeshHWMPmaxPREQretries = 1723 nconf->dot11MeshHWMPmaxPREQretries; 1724 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1725 conf->path_refresh_time = nconf->path_refresh_time; 1726 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1727 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1728 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1729 conf->dot11MeshHWMPactivePathTimeout = 1730 nconf->dot11MeshHWMPactivePathTimeout; 1731 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1732 conf->dot11MeshHWMPpreqMinInterval = 1733 nconf->dot11MeshHWMPpreqMinInterval; 1734 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1735 conf->dot11MeshHWMPperrMinInterval = 1736 nconf->dot11MeshHWMPperrMinInterval; 1737 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1738 mask)) 1739 conf->dot11MeshHWMPnetDiameterTraversalTime = 1740 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1741 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1742 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1743 ieee80211_mesh_root_setup(ifmsh); 1744 } 1745 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1746 /* our current gate announcement implementation rides on root 1747 * announcements, so require this ifmsh to also be a root node 1748 * */ 1749 if (nconf->dot11MeshGateAnnouncementProtocol && 1750 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1751 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1752 ieee80211_mesh_root_setup(ifmsh); 1753 } 1754 conf->dot11MeshGateAnnouncementProtocol = 1755 nconf->dot11MeshGateAnnouncementProtocol; 1756 } 1757 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1758 conf->dot11MeshHWMPRannInterval = 1759 nconf->dot11MeshHWMPRannInterval; 1760 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1761 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1762 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1763 /* our RSSI threshold implementation is supported only for 1764 * devices that report signal in dBm. 1765 */ 1766 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1767 return -ENOTSUPP; 1768 conf->rssi_threshold = nconf->rssi_threshold; 1769 } 1770 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1771 conf->ht_opmode = nconf->ht_opmode; 1772 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1773 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1774 } 1775 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1776 conf->dot11MeshHWMPactivePathToRootTimeout = 1777 nconf->dot11MeshHWMPactivePathToRootTimeout; 1778 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1779 conf->dot11MeshHWMProotInterval = 1780 nconf->dot11MeshHWMProotInterval; 1781 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1782 conf->dot11MeshHWMPconfirmationInterval = 1783 nconf->dot11MeshHWMPconfirmationInterval; 1784 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1785 conf->power_mode = nconf->power_mode; 1786 ieee80211_mps_local_status_update(sdata); 1787 } 1788 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1789 conf->dot11MeshAwakeWindowDuration = 1790 nconf->dot11MeshAwakeWindowDuration; 1791 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1792 conf->plink_timeout = nconf->plink_timeout; 1793 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1794 return 0; 1795 } 1796 1797 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1798 const struct mesh_config *conf, 1799 const struct mesh_setup *setup) 1800 { 1801 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1802 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1803 int err; 1804 1805 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1806 err = copy_mesh_setup(ifmsh, setup); 1807 if (err) 1808 return err; 1809 1810 /* can mesh use other SMPS modes? */ 1811 sdata->smps_mode = IEEE80211_SMPS_OFF; 1812 sdata->needed_rx_chains = sdata->local->rx_chains; 1813 1814 mutex_lock(&sdata->local->mtx); 1815 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1816 IEEE80211_CHANCTX_SHARED); 1817 mutex_unlock(&sdata->local->mtx); 1818 if (err) 1819 return err; 1820 1821 return ieee80211_start_mesh(sdata); 1822 } 1823 1824 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1825 { 1826 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1827 1828 ieee80211_stop_mesh(sdata); 1829 mutex_lock(&sdata->local->mtx); 1830 ieee80211_vif_release_channel(sdata); 1831 mutex_unlock(&sdata->local->mtx); 1832 1833 return 0; 1834 } 1835 #endif 1836 1837 static int ieee80211_change_bss(struct wiphy *wiphy, 1838 struct net_device *dev, 1839 struct bss_parameters *params) 1840 { 1841 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1842 enum ieee80211_band band; 1843 u32 changed = 0; 1844 1845 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1846 return -ENOENT; 1847 1848 band = ieee80211_get_sdata_band(sdata); 1849 1850 if (params->use_cts_prot >= 0) { 1851 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1852 changed |= BSS_CHANGED_ERP_CTS_PROT; 1853 } 1854 if (params->use_short_preamble >= 0) { 1855 sdata->vif.bss_conf.use_short_preamble = 1856 params->use_short_preamble; 1857 changed |= BSS_CHANGED_ERP_PREAMBLE; 1858 } 1859 1860 if (!sdata->vif.bss_conf.use_short_slot && 1861 band == IEEE80211_BAND_5GHZ) { 1862 sdata->vif.bss_conf.use_short_slot = true; 1863 changed |= BSS_CHANGED_ERP_SLOT; 1864 } 1865 1866 if (params->use_short_slot_time >= 0) { 1867 sdata->vif.bss_conf.use_short_slot = 1868 params->use_short_slot_time; 1869 changed |= BSS_CHANGED_ERP_SLOT; 1870 } 1871 1872 if (params->basic_rates) { 1873 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1874 wiphy->bands[band], 1875 params->basic_rates, 1876 params->basic_rates_len, 1877 &sdata->vif.bss_conf.basic_rates); 1878 changed |= BSS_CHANGED_BASIC_RATES; 1879 } 1880 1881 if (params->ap_isolate >= 0) { 1882 if (params->ap_isolate) 1883 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1884 else 1885 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1886 } 1887 1888 if (params->ht_opmode >= 0) { 1889 sdata->vif.bss_conf.ht_operation_mode = 1890 (u16) params->ht_opmode; 1891 changed |= BSS_CHANGED_HT; 1892 } 1893 1894 if (params->p2p_ctwindow >= 0) { 1895 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1896 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1897 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1898 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1899 changed |= BSS_CHANGED_P2P_PS; 1900 } 1901 1902 if (params->p2p_opp_ps > 0) { 1903 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1904 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1905 changed |= BSS_CHANGED_P2P_PS; 1906 } else if (params->p2p_opp_ps == 0) { 1907 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1908 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1909 changed |= BSS_CHANGED_P2P_PS; 1910 } 1911 1912 ieee80211_bss_info_change_notify(sdata, changed); 1913 1914 return 0; 1915 } 1916 1917 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1918 struct net_device *dev, 1919 struct ieee80211_txq_params *params) 1920 { 1921 struct ieee80211_local *local = wiphy_priv(wiphy); 1922 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1923 struct ieee80211_tx_queue_params p; 1924 1925 if (!local->ops->conf_tx) 1926 return -EOPNOTSUPP; 1927 1928 if (local->hw.queues < IEEE80211_NUM_ACS) 1929 return -EOPNOTSUPP; 1930 1931 memset(&p, 0, sizeof(p)); 1932 p.aifs = params->aifs; 1933 p.cw_max = params->cwmax; 1934 p.cw_min = params->cwmin; 1935 p.txop = params->txop; 1936 1937 /* 1938 * Setting tx queue params disables u-apsd because it's only 1939 * called in master mode. 1940 */ 1941 p.uapsd = false; 1942 1943 sdata->tx_conf[params->ac] = p; 1944 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1945 wiphy_debug(local->hw.wiphy, 1946 "failed to set TX queue parameters for AC %d\n", 1947 params->ac); 1948 return -EINVAL; 1949 } 1950 1951 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1952 1953 return 0; 1954 } 1955 1956 #ifdef CONFIG_PM 1957 static int ieee80211_suspend(struct wiphy *wiphy, 1958 struct cfg80211_wowlan *wowlan) 1959 { 1960 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1961 } 1962 1963 static int ieee80211_resume(struct wiphy *wiphy) 1964 { 1965 return __ieee80211_resume(wiphy_priv(wiphy)); 1966 } 1967 #else 1968 #define ieee80211_suspend NULL 1969 #define ieee80211_resume NULL 1970 #endif 1971 1972 static int ieee80211_scan(struct wiphy *wiphy, 1973 struct cfg80211_scan_request *req) 1974 { 1975 struct ieee80211_sub_if_data *sdata; 1976 1977 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1978 1979 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1980 case NL80211_IFTYPE_STATION: 1981 case NL80211_IFTYPE_ADHOC: 1982 case NL80211_IFTYPE_MESH_POINT: 1983 case NL80211_IFTYPE_P2P_CLIENT: 1984 case NL80211_IFTYPE_P2P_DEVICE: 1985 break; 1986 case NL80211_IFTYPE_P2P_GO: 1987 if (sdata->local->ops->hw_scan) 1988 break; 1989 /* 1990 * FIXME: implement NoA while scanning in software, 1991 * for now fall through to allow scanning only when 1992 * beaconing hasn't been configured yet 1993 */ 1994 case NL80211_IFTYPE_AP: 1995 /* 1996 * If the scan has been forced (and the driver supports 1997 * forcing), don't care about being beaconing already. 1998 * This will create problems to the attached stations (e.g. all 1999 * the frames sent while scanning on other channel will be 2000 * lost) 2001 */ 2002 if (sdata->u.ap.beacon && 2003 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2004 !(req->flags & NL80211_SCAN_FLAG_AP))) 2005 return -EOPNOTSUPP; 2006 break; 2007 default: 2008 return -EOPNOTSUPP; 2009 } 2010 2011 return ieee80211_request_scan(sdata, req); 2012 } 2013 2014 static int 2015 ieee80211_sched_scan_start(struct wiphy *wiphy, 2016 struct net_device *dev, 2017 struct cfg80211_sched_scan_request *req) 2018 { 2019 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2020 2021 if (!sdata->local->ops->sched_scan_start) 2022 return -EOPNOTSUPP; 2023 2024 return ieee80211_request_sched_scan_start(sdata, req); 2025 } 2026 2027 static int 2028 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2029 { 2030 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2031 2032 if (!sdata->local->ops->sched_scan_stop) 2033 return -EOPNOTSUPP; 2034 2035 return ieee80211_request_sched_scan_stop(sdata); 2036 } 2037 2038 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2039 struct cfg80211_auth_request *req) 2040 { 2041 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2042 } 2043 2044 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2045 struct cfg80211_assoc_request *req) 2046 { 2047 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2048 } 2049 2050 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2051 struct cfg80211_deauth_request *req) 2052 { 2053 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2054 } 2055 2056 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2057 struct cfg80211_disassoc_request *req) 2058 { 2059 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2060 } 2061 2062 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2063 struct cfg80211_ibss_params *params) 2064 { 2065 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2066 } 2067 2068 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2069 { 2070 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2071 } 2072 2073 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2074 struct ocb_setup *setup) 2075 { 2076 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2077 } 2078 2079 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2080 { 2081 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2082 } 2083 2084 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2085 int rate[IEEE80211_NUM_BANDS]) 2086 { 2087 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2088 2089 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2090 sizeof(int) * IEEE80211_NUM_BANDS); 2091 2092 return 0; 2093 } 2094 2095 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2096 { 2097 struct ieee80211_local *local = wiphy_priv(wiphy); 2098 int err; 2099 2100 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2101 ieee80211_check_fast_xmit_all(local); 2102 2103 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2104 2105 if (err) { 2106 ieee80211_check_fast_xmit_all(local); 2107 return err; 2108 } 2109 } 2110 2111 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2112 (changed & WIPHY_PARAM_DYN_ACK)) { 2113 s16 coverage_class; 2114 2115 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2116 wiphy->coverage_class : -1; 2117 err = drv_set_coverage_class(local, coverage_class); 2118 2119 if (err) 2120 return err; 2121 } 2122 2123 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2124 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2125 2126 if (err) 2127 return err; 2128 } 2129 2130 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2131 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2132 return -EINVAL; 2133 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2134 } 2135 if (changed & WIPHY_PARAM_RETRY_LONG) { 2136 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2137 return -EINVAL; 2138 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2139 } 2140 if (changed & 2141 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2142 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2143 2144 return 0; 2145 } 2146 2147 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2148 struct wireless_dev *wdev, 2149 enum nl80211_tx_power_setting type, int mbm) 2150 { 2151 struct ieee80211_local *local = wiphy_priv(wiphy); 2152 struct ieee80211_sub_if_data *sdata; 2153 enum nl80211_tx_power_setting txp_type = type; 2154 bool update_txp_type = false; 2155 2156 if (wdev) { 2157 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2158 2159 switch (type) { 2160 case NL80211_TX_POWER_AUTOMATIC: 2161 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2162 txp_type = NL80211_TX_POWER_LIMITED; 2163 break; 2164 case NL80211_TX_POWER_LIMITED: 2165 case NL80211_TX_POWER_FIXED: 2166 if (mbm < 0 || (mbm % 100)) 2167 return -EOPNOTSUPP; 2168 sdata->user_power_level = MBM_TO_DBM(mbm); 2169 break; 2170 } 2171 2172 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2173 update_txp_type = true; 2174 sdata->vif.bss_conf.txpower_type = txp_type; 2175 } 2176 2177 ieee80211_recalc_txpower(sdata, update_txp_type); 2178 2179 return 0; 2180 } 2181 2182 switch (type) { 2183 case NL80211_TX_POWER_AUTOMATIC: 2184 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2185 txp_type = NL80211_TX_POWER_LIMITED; 2186 break; 2187 case NL80211_TX_POWER_LIMITED: 2188 case NL80211_TX_POWER_FIXED: 2189 if (mbm < 0 || (mbm % 100)) 2190 return -EOPNOTSUPP; 2191 local->user_power_level = MBM_TO_DBM(mbm); 2192 break; 2193 } 2194 2195 mutex_lock(&local->iflist_mtx); 2196 list_for_each_entry(sdata, &local->interfaces, list) { 2197 sdata->user_power_level = local->user_power_level; 2198 if (txp_type != sdata->vif.bss_conf.txpower_type) 2199 update_txp_type = true; 2200 sdata->vif.bss_conf.txpower_type = txp_type; 2201 } 2202 list_for_each_entry(sdata, &local->interfaces, list) 2203 ieee80211_recalc_txpower(sdata, update_txp_type); 2204 mutex_unlock(&local->iflist_mtx); 2205 2206 return 0; 2207 } 2208 2209 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2210 struct wireless_dev *wdev, 2211 int *dbm) 2212 { 2213 struct ieee80211_local *local = wiphy_priv(wiphy); 2214 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2215 2216 if (local->ops->get_txpower) 2217 return drv_get_txpower(local, sdata, dbm); 2218 2219 if (!local->use_chanctx) 2220 *dbm = local->hw.conf.power_level; 2221 else 2222 *dbm = sdata->vif.bss_conf.txpower; 2223 2224 return 0; 2225 } 2226 2227 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2228 const u8 *addr) 2229 { 2230 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2231 2232 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2233 2234 return 0; 2235 } 2236 2237 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2238 { 2239 struct ieee80211_local *local = wiphy_priv(wiphy); 2240 2241 drv_rfkill_poll(local); 2242 } 2243 2244 #ifdef CONFIG_NL80211_TESTMODE 2245 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2246 struct wireless_dev *wdev, 2247 void *data, int len) 2248 { 2249 struct ieee80211_local *local = wiphy_priv(wiphy); 2250 struct ieee80211_vif *vif = NULL; 2251 2252 if (!local->ops->testmode_cmd) 2253 return -EOPNOTSUPP; 2254 2255 if (wdev) { 2256 struct ieee80211_sub_if_data *sdata; 2257 2258 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2259 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2260 vif = &sdata->vif; 2261 } 2262 2263 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2264 } 2265 2266 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2267 struct sk_buff *skb, 2268 struct netlink_callback *cb, 2269 void *data, int len) 2270 { 2271 struct ieee80211_local *local = wiphy_priv(wiphy); 2272 2273 if (!local->ops->testmode_dump) 2274 return -EOPNOTSUPP; 2275 2276 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2277 } 2278 #endif 2279 2280 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2281 enum ieee80211_smps_mode smps_mode) 2282 { 2283 struct sta_info *sta; 2284 enum ieee80211_smps_mode old_req; 2285 2286 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2287 return -EINVAL; 2288 2289 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2290 return 0; 2291 2292 old_req = sdata->u.ap.req_smps; 2293 sdata->u.ap.req_smps = smps_mode; 2294 2295 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2296 if (old_req == smps_mode || 2297 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2298 return 0; 2299 2300 /* If no associated stations, there's no need to do anything */ 2301 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2302 sdata->smps_mode = smps_mode; 2303 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2304 return 0; 2305 } 2306 2307 ht_dbg(sdata, 2308 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2309 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2310 2311 mutex_lock(&sdata->local->sta_mtx); 2312 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2313 /* 2314 * Only stations associated to our AP and 2315 * associated VLANs 2316 */ 2317 if (sta->sdata->bss != &sdata->u.ap) 2318 continue; 2319 2320 /* This station doesn't support MIMO - skip it */ 2321 if (sta_info_tx_streams(sta) == 1) 2322 continue; 2323 2324 /* 2325 * Don't wake up a STA just to send the action frame 2326 * unless we are getting more restrictive. 2327 */ 2328 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2329 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2330 smps_mode)) { 2331 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2332 sta->sta.addr); 2333 continue; 2334 } 2335 2336 /* 2337 * If the STA is not authorized, wait until it gets 2338 * authorized and the action frame will be sent then. 2339 */ 2340 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2341 continue; 2342 2343 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2344 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2345 sdata->vif.bss_conf.bssid); 2346 } 2347 mutex_unlock(&sdata->local->sta_mtx); 2348 2349 sdata->smps_mode = smps_mode; 2350 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2351 2352 return 0; 2353 } 2354 2355 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2356 enum ieee80211_smps_mode smps_mode) 2357 { 2358 const u8 *ap; 2359 enum ieee80211_smps_mode old_req; 2360 int err; 2361 2362 lockdep_assert_held(&sdata->wdev.mtx); 2363 2364 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2365 return -EINVAL; 2366 2367 old_req = sdata->u.mgd.req_smps; 2368 sdata->u.mgd.req_smps = smps_mode; 2369 2370 if (old_req == smps_mode && 2371 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2372 return 0; 2373 2374 /* 2375 * If not associated, or current association is not an HT 2376 * association, there's no need to do anything, just store 2377 * the new value until we associate. 2378 */ 2379 if (!sdata->u.mgd.associated || 2380 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2381 return 0; 2382 2383 ap = sdata->u.mgd.associated->bssid; 2384 2385 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2386 if (sdata->u.mgd.powersave) 2387 smps_mode = IEEE80211_SMPS_DYNAMIC; 2388 else 2389 smps_mode = IEEE80211_SMPS_OFF; 2390 } 2391 2392 /* send SM PS frame to AP */ 2393 err = ieee80211_send_smps_action(sdata, smps_mode, 2394 ap, ap); 2395 if (err) 2396 sdata->u.mgd.req_smps = old_req; 2397 2398 return err; 2399 } 2400 2401 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2402 bool enabled, int timeout) 2403 { 2404 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2405 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2406 2407 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2408 return -EOPNOTSUPP; 2409 2410 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2411 return -EOPNOTSUPP; 2412 2413 if (enabled == sdata->u.mgd.powersave && 2414 timeout == local->dynamic_ps_forced_timeout) 2415 return 0; 2416 2417 sdata->u.mgd.powersave = enabled; 2418 local->dynamic_ps_forced_timeout = timeout; 2419 2420 /* no change, but if automatic follow powersave */ 2421 sdata_lock(sdata); 2422 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2423 sdata_unlock(sdata); 2424 2425 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2426 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2427 2428 ieee80211_recalc_ps(local, -1); 2429 ieee80211_recalc_ps_vif(sdata); 2430 2431 return 0; 2432 } 2433 2434 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2435 struct net_device *dev, 2436 s32 rssi_thold, u32 rssi_hyst) 2437 { 2438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2439 struct ieee80211_vif *vif = &sdata->vif; 2440 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2441 2442 if (rssi_thold == bss_conf->cqm_rssi_thold && 2443 rssi_hyst == bss_conf->cqm_rssi_hyst) 2444 return 0; 2445 2446 bss_conf->cqm_rssi_thold = rssi_thold; 2447 bss_conf->cqm_rssi_hyst = rssi_hyst; 2448 2449 /* tell the driver upon association, unless already associated */ 2450 if (sdata->u.mgd.associated && 2451 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2452 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2453 2454 return 0; 2455 } 2456 2457 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2458 struct net_device *dev, 2459 const u8 *addr, 2460 const struct cfg80211_bitrate_mask *mask) 2461 { 2462 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2463 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2464 int i, ret; 2465 2466 if (!ieee80211_sdata_running(sdata)) 2467 return -ENETDOWN; 2468 2469 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2470 ret = drv_set_bitrate_mask(local, sdata, mask); 2471 if (ret) 2472 return ret; 2473 } 2474 2475 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2476 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2477 int j; 2478 2479 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2480 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2481 sizeof(mask->control[i].ht_mcs)); 2482 2483 sdata->rc_has_mcs_mask[i] = false; 2484 if (!sband) 2485 continue; 2486 2487 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) 2488 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2489 sdata->rc_has_mcs_mask[i] = true; 2490 break; 2491 } 2492 } 2493 2494 return 0; 2495 } 2496 2497 static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, 2498 struct ieee80211_roc_work *new_roc, 2499 struct ieee80211_roc_work *cur_roc) 2500 { 2501 unsigned long now = jiffies; 2502 unsigned long remaining = cur_roc->hw_start_time + 2503 msecs_to_jiffies(cur_roc->duration) - 2504 now; 2505 2506 if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) 2507 return false; 2508 2509 /* if it doesn't fit entirely, schedule a new one */ 2510 if (new_roc->duration > jiffies_to_msecs(remaining)) 2511 return false; 2512 2513 ieee80211_handle_roc_started(new_roc); 2514 2515 /* add to dependents so we send the expired event properly */ 2516 list_add_tail(&new_roc->list, &cur_roc->dependents); 2517 return true; 2518 } 2519 2520 static u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 2521 { 2522 lockdep_assert_held(&local->mtx); 2523 2524 local->roc_cookie_counter++; 2525 2526 /* wow, you wrapped 64 bits ... more likely a bug */ 2527 if (WARN_ON(local->roc_cookie_counter == 0)) 2528 local->roc_cookie_counter++; 2529 2530 return local->roc_cookie_counter; 2531 } 2532 2533 static int ieee80211_start_roc_work(struct ieee80211_local *local, 2534 struct ieee80211_sub_if_data *sdata, 2535 struct ieee80211_channel *channel, 2536 unsigned int duration, u64 *cookie, 2537 struct sk_buff *txskb, 2538 enum ieee80211_roc_type type) 2539 { 2540 struct ieee80211_roc_work *roc, *tmp; 2541 bool queued = false; 2542 int ret; 2543 2544 lockdep_assert_held(&local->mtx); 2545 2546 if (local->use_chanctx && !local->ops->remain_on_channel) 2547 return -EOPNOTSUPP; 2548 2549 roc = kzalloc(sizeof(*roc), GFP_KERNEL); 2550 if (!roc) 2551 return -ENOMEM; 2552 2553 /* 2554 * If the duration is zero, then the driver 2555 * wouldn't actually do anything. Set it to 2556 * 10 for now. 2557 * 2558 * TODO: cancel the off-channel operation 2559 * when we get the SKB's TX status and 2560 * the wait time was zero before. 2561 */ 2562 if (!duration) 2563 duration = 10; 2564 2565 roc->chan = channel; 2566 roc->duration = duration; 2567 roc->req_duration = duration; 2568 roc->frame = txskb; 2569 roc->type = type; 2570 roc->sdata = sdata; 2571 INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); 2572 INIT_LIST_HEAD(&roc->dependents); 2573 2574 /* 2575 * cookie is either the roc cookie (for normal roc) 2576 * or the SKB (for mgmt TX) 2577 */ 2578 if (!txskb) { 2579 roc->cookie = ieee80211_mgmt_tx_cookie(local); 2580 *cookie = roc->cookie; 2581 } else { 2582 roc->mgmt_tx_cookie = *cookie; 2583 } 2584 2585 /* if there's one pending or we're scanning, queue this one */ 2586 if (!list_empty(&local->roc_list) || 2587 local->scanning || ieee80211_is_radar_required(local)) 2588 goto out_check_combine; 2589 2590 /* if not HW assist, just queue & schedule work */ 2591 if (!local->ops->remain_on_channel) { 2592 ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); 2593 goto out_queue; 2594 } 2595 2596 /* otherwise actually kick it off here (for error handling) */ 2597 2598 ret = drv_remain_on_channel(local, sdata, channel, duration, type); 2599 if (ret) { 2600 kfree(roc); 2601 return ret; 2602 } 2603 2604 roc->started = true; 2605 goto out_queue; 2606 2607 out_check_combine: 2608 list_for_each_entry(tmp, &local->roc_list, list) { 2609 if (tmp->chan != channel || tmp->sdata != sdata) 2610 continue; 2611 2612 /* 2613 * Extend this ROC if possible: 2614 * 2615 * If it hasn't started yet, just increase the duration 2616 * and add the new one to the list of dependents. 2617 * If the type of the new ROC has higher priority, modify the 2618 * type of the previous one to match that of the new one. 2619 */ 2620 if (!tmp->started) { 2621 list_add_tail(&roc->list, &tmp->dependents); 2622 tmp->duration = max(tmp->duration, roc->duration); 2623 tmp->type = max(tmp->type, roc->type); 2624 queued = true; 2625 break; 2626 } 2627 2628 /* If it has already started, it's more difficult ... */ 2629 if (local->ops->remain_on_channel) { 2630 /* 2631 * In the offloaded ROC case, if it hasn't begun, add 2632 * this new one to the dependent list to be handled 2633 * when the master one begins. If it has begun, 2634 * check if it fits entirely within the existing one, 2635 * in which case it will just be dependent as well. 2636 * Otherwise, schedule it by itself. 2637 */ 2638 if (!tmp->hw_begun) { 2639 list_add_tail(&roc->list, &tmp->dependents); 2640 queued = true; 2641 break; 2642 } 2643 2644 if (ieee80211_coalesce_started_roc(local, roc, tmp)) 2645 queued = true; 2646 } else if (del_timer_sync(&tmp->work.timer)) { 2647 unsigned long new_end; 2648 2649 /* 2650 * In the software ROC case, cancel the timer, if 2651 * that fails then the finish work is already 2652 * queued/pending and thus we queue the new ROC 2653 * normally, if that succeeds then we can extend 2654 * the timer duration and TX the frame (if any.) 2655 */ 2656 2657 list_add_tail(&roc->list, &tmp->dependents); 2658 queued = true; 2659 2660 new_end = jiffies + msecs_to_jiffies(roc->duration); 2661 2662 /* ok, it was started & we canceled timer */ 2663 if (time_after(new_end, tmp->work.timer.expires)) 2664 mod_timer(&tmp->work.timer, new_end); 2665 else 2666 add_timer(&tmp->work.timer); 2667 2668 ieee80211_handle_roc_started(roc); 2669 } 2670 break; 2671 } 2672 2673 out_queue: 2674 if (!queued) 2675 list_add_tail(&roc->list, &local->roc_list); 2676 2677 return 0; 2678 } 2679 2680 static int ieee80211_remain_on_channel(struct wiphy *wiphy, 2681 struct wireless_dev *wdev, 2682 struct ieee80211_channel *chan, 2683 unsigned int duration, 2684 u64 *cookie) 2685 { 2686 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2687 struct ieee80211_local *local = sdata->local; 2688 int ret; 2689 2690 mutex_lock(&local->mtx); 2691 ret = ieee80211_start_roc_work(local, sdata, chan, 2692 duration, cookie, NULL, 2693 IEEE80211_ROC_TYPE_NORMAL); 2694 mutex_unlock(&local->mtx); 2695 2696 return ret; 2697 } 2698 2699 static int ieee80211_cancel_roc(struct ieee80211_local *local, 2700 u64 cookie, bool mgmt_tx) 2701 { 2702 struct ieee80211_roc_work *roc, *tmp, *found = NULL; 2703 int ret; 2704 2705 mutex_lock(&local->mtx); 2706 list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { 2707 struct ieee80211_roc_work *dep, *tmp2; 2708 2709 list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { 2710 if (!mgmt_tx && dep->cookie != cookie) 2711 continue; 2712 else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) 2713 continue; 2714 /* found dependent item -- just remove it */ 2715 list_del(&dep->list); 2716 mutex_unlock(&local->mtx); 2717 2718 ieee80211_roc_notify_destroy(dep, true); 2719 return 0; 2720 } 2721 2722 if (!mgmt_tx && roc->cookie != cookie) 2723 continue; 2724 else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) 2725 continue; 2726 2727 found = roc; 2728 break; 2729 } 2730 2731 if (!found) { 2732 mutex_unlock(&local->mtx); 2733 return -ENOENT; 2734 } 2735 2736 /* 2737 * We found the item to cancel, so do that. Note that it 2738 * may have dependents, which we also cancel (and send 2739 * the expired signal for.) Not doing so would be quite 2740 * tricky here, but we may need to fix it later. 2741 */ 2742 2743 if (local->ops->remain_on_channel) { 2744 if (found->started) { 2745 ret = drv_cancel_remain_on_channel(local); 2746 if (WARN_ON_ONCE(ret)) { 2747 mutex_unlock(&local->mtx); 2748 return ret; 2749 } 2750 } 2751 2752 list_del(&found->list); 2753 2754 if (found->started) 2755 ieee80211_start_next_roc(local); 2756 mutex_unlock(&local->mtx); 2757 2758 ieee80211_roc_notify_destroy(found, true); 2759 } else { 2760 /* work may be pending so use it all the time */ 2761 found->abort = true; 2762 ieee80211_queue_delayed_work(&local->hw, &found->work, 0); 2763 2764 mutex_unlock(&local->mtx); 2765 2766 /* work will clean up etc */ 2767 flush_delayed_work(&found->work); 2768 WARN_ON(!found->to_be_freed); 2769 kfree(found); 2770 } 2771 2772 return 0; 2773 } 2774 2775 static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 2776 struct wireless_dev *wdev, 2777 u64 cookie) 2778 { 2779 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2780 struct ieee80211_local *local = sdata->local; 2781 2782 return ieee80211_cancel_roc(local, cookie, false); 2783 } 2784 2785 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2786 struct net_device *dev, 2787 struct cfg80211_chan_def *chandef, 2788 u32 cac_time_ms) 2789 { 2790 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2791 struct ieee80211_local *local = sdata->local; 2792 int err; 2793 2794 mutex_lock(&local->mtx); 2795 if (!list_empty(&local->roc_list) || local->scanning) { 2796 err = -EBUSY; 2797 goto out_unlock; 2798 } 2799 2800 /* whatever, but channel contexts should not complain about that one */ 2801 sdata->smps_mode = IEEE80211_SMPS_OFF; 2802 sdata->needed_rx_chains = local->rx_chains; 2803 2804 err = ieee80211_vif_use_channel(sdata, chandef, 2805 IEEE80211_CHANCTX_SHARED); 2806 if (err) 2807 goto out_unlock; 2808 2809 ieee80211_queue_delayed_work(&sdata->local->hw, 2810 &sdata->dfs_cac_timer_work, 2811 msecs_to_jiffies(cac_time_ms)); 2812 2813 out_unlock: 2814 mutex_unlock(&local->mtx); 2815 return err; 2816 } 2817 2818 static struct cfg80211_beacon_data * 2819 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2820 { 2821 struct cfg80211_beacon_data *new_beacon; 2822 u8 *pos; 2823 int len; 2824 2825 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2826 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2827 beacon->probe_resp_len; 2828 2829 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2830 if (!new_beacon) 2831 return NULL; 2832 2833 pos = (u8 *)(new_beacon + 1); 2834 if (beacon->head_len) { 2835 new_beacon->head_len = beacon->head_len; 2836 new_beacon->head = pos; 2837 memcpy(pos, beacon->head, beacon->head_len); 2838 pos += beacon->head_len; 2839 } 2840 if (beacon->tail_len) { 2841 new_beacon->tail_len = beacon->tail_len; 2842 new_beacon->tail = pos; 2843 memcpy(pos, beacon->tail, beacon->tail_len); 2844 pos += beacon->tail_len; 2845 } 2846 if (beacon->beacon_ies_len) { 2847 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2848 new_beacon->beacon_ies = pos; 2849 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2850 pos += beacon->beacon_ies_len; 2851 } 2852 if (beacon->proberesp_ies_len) { 2853 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2854 new_beacon->proberesp_ies = pos; 2855 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2856 pos += beacon->proberesp_ies_len; 2857 } 2858 if (beacon->assocresp_ies_len) { 2859 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2860 new_beacon->assocresp_ies = pos; 2861 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2862 pos += beacon->assocresp_ies_len; 2863 } 2864 if (beacon->probe_resp_len) { 2865 new_beacon->probe_resp_len = beacon->probe_resp_len; 2866 beacon->probe_resp = pos; 2867 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2868 pos += beacon->probe_resp_len; 2869 } 2870 2871 return new_beacon; 2872 } 2873 2874 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2875 { 2876 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2877 2878 ieee80211_queue_work(&sdata->local->hw, 2879 &sdata->csa_finalize_work); 2880 } 2881 EXPORT_SYMBOL(ieee80211_csa_finish); 2882 2883 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2884 u32 *changed) 2885 { 2886 int err; 2887 2888 switch (sdata->vif.type) { 2889 case NL80211_IFTYPE_AP: 2890 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2891 NULL); 2892 kfree(sdata->u.ap.next_beacon); 2893 sdata->u.ap.next_beacon = NULL; 2894 2895 if (err < 0) 2896 return err; 2897 *changed |= err; 2898 break; 2899 case NL80211_IFTYPE_ADHOC: 2900 err = ieee80211_ibss_finish_csa(sdata); 2901 if (err < 0) 2902 return err; 2903 *changed |= err; 2904 break; 2905 #ifdef CONFIG_MAC80211_MESH 2906 case NL80211_IFTYPE_MESH_POINT: 2907 err = ieee80211_mesh_finish_csa(sdata); 2908 if (err < 0) 2909 return err; 2910 *changed |= err; 2911 break; 2912 #endif 2913 default: 2914 WARN_ON(1); 2915 return -EINVAL; 2916 } 2917 2918 return 0; 2919 } 2920 2921 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2922 { 2923 struct ieee80211_local *local = sdata->local; 2924 u32 changed = 0; 2925 int err; 2926 2927 sdata_assert_lock(sdata); 2928 lockdep_assert_held(&local->mtx); 2929 lockdep_assert_held(&local->chanctx_mtx); 2930 2931 /* 2932 * using reservation isn't immediate as it may be deferred until later 2933 * with multi-vif. once reservation is complete it will re-schedule the 2934 * work with no reserved_chanctx so verify chandef to check if it 2935 * completed successfully 2936 */ 2937 2938 if (sdata->reserved_chanctx) { 2939 /* 2940 * with multi-vif csa driver may call ieee80211_csa_finish() 2941 * many times while waiting for other interfaces to use their 2942 * reservations 2943 */ 2944 if (sdata->reserved_ready) 2945 return 0; 2946 2947 return ieee80211_vif_use_reserved_context(sdata); 2948 } 2949 2950 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2951 &sdata->csa_chandef)) 2952 return -EINVAL; 2953 2954 sdata->vif.csa_active = false; 2955 2956 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2957 if (err) 2958 return err; 2959 2960 ieee80211_bss_info_change_notify(sdata, changed); 2961 2962 if (sdata->csa_block_tx) { 2963 ieee80211_wake_vif_queues(local, sdata, 2964 IEEE80211_QUEUE_STOP_REASON_CSA); 2965 sdata->csa_block_tx = false; 2966 } 2967 2968 err = drv_post_channel_switch(sdata); 2969 if (err) 2970 return err; 2971 2972 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2973 2974 return 0; 2975 } 2976 2977 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2978 { 2979 if (__ieee80211_csa_finalize(sdata)) { 2980 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2981 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2982 GFP_KERNEL); 2983 } 2984 } 2985 2986 void ieee80211_csa_finalize_work(struct work_struct *work) 2987 { 2988 struct ieee80211_sub_if_data *sdata = 2989 container_of(work, struct ieee80211_sub_if_data, 2990 csa_finalize_work); 2991 struct ieee80211_local *local = sdata->local; 2992 2993 sdata_lock(sdata); 2994 mutex_lock(&local->mtx); 2995 mutex_lock(&local->chanctx_mtx); 2996 2997 /* AP might have been stopped while waiting for the lock. */ 2998 if (!sdata->vif.csa_active) 2999 goto unlock; 3000 3001 if (!ieee80211_sdata_running(sdata)) 3002 goto unlock; 3003 3004 ieee80211_csa_finalize(sdata); 3005 3006 unlock: 3007 mutex_unlock(&local->chanctx_mtx); 3008 mutex_unlock(&local->mtx); 3009 sdata_unlock(sdata); 3010 } 3011 3012 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3013 struct cfg80211_csa_settings *params, 3014 u32 *changed) 3015 { 3016 struct ieee80211_csa_settings csa = {}; 3017 int err; 3018 3019 switch (sdata->vif.type) { 3020 case NL80211_IFTYPE_AP: 3021 sdata->u.ap.next_beacon = 3022 cfg80211_beacon_dup(¶ms->beacon_after); 3023 if (!sdata->u.ap.next_beacon) 3024 return -ENOMEM; 3025 3026 /* 3027 * With a count of 0, we don't have to wait for any 3028 * TBTT before switching, so complete the CSA 3029 * immediately. In theory, with a count == 1 we 3030 * should delay the switch until just before the next 3031 * TBTT, but that would complicate things so we switch 3032 * immediately too. If we would delay the switch 3033 * until the next TBTT, we would have to set the probe 3034 * response here. 3035 * 3036 * TODO: A channel switch with count <= 1 without 3037 * sending a CSA action frame is kind of useless, 3038 * because the clients won't know we're changing 3039 * channels. The action frame must be implemented 3040 * either here or in the userspace. 3041 */ 3042 if (params->count <= 1) 3043 break; 3044 3045 if ((params->n_counter_offsets_beacon > 3046 IEEE80211_MAX_CSA_COUNTERS_NUM) || 3047 (params->n_counter_offsets_presp > 3048 IEEE80211_MAX_CSA_COUNTERS_NUM)) 3049 return -EINVAL; 3050 3051 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3052 csa.counter_offsets_presp = params->counter_offsets_presp; 3053 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3054 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3055 csa.count = params->count; 3056 3057 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 3058 if (err < 0) { 3059 kfree(sdata->u.ap.next_beacon); 3060 return err; 3061 } 3062 *changed |= err; 3063 3064 break; 3065 case NL80211_IFTYPE_ADHOC: 3066 if (!sdata->vif.bss_conf.ibss_joined) 3067 return -EINVAL; 3068 3069 if (params->chandef.width != sdata->u.ibss.chandef.width) 3070 return -EINVAL; 3071 3072 switch (params->chandef.width) { 3073 case NL80211_CHAN_WIDTH_40: 3074 if (cfg80211_get_chandef_type(¶ms->chandef) != 3075 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3076 return -EINVAL; 3077 case NL80211_CHAN_WIDTH_5: 3078 case NL80211_CHAN_WIDTH_10: 3079 case NL80211_CHAN_WIDTH_20_NOHT: 3080 case NL80211_CHAN_WIDTH_20: 3081 break; 3082 default: 3083 return -EINVAL; 3084 } 3085 3086 /* changes into another band are not supported */ 3087 if (sdata->u.ibss.chandef.chan->band != 3088 params->chandef.chan->band) 3089 return -EINVAL; 3090 3091 /* see comments in the NL80211_IFTYPE_AP block */ 3092 if (params->count > 1) { 3093 err = ieee80211_ibss_csa_beacon(sdata, params); 3094 if (err < 0) 3095 return err; 3096 *changed |= err; 3097 } 3098 3099 ieee80211_send_action_csa(sdata, params); 3100 3101 break; 3102 #ifdef CONFIG_MAC80211_MESH 3103 case NL80211_IFTYPE_MESH_POINT: { 3104 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3105 3106 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3107 return -EINVAL; 3108 3109 /* changes into another band are not supported */ 3110 if (sdata->vif.bss_conf.chandef.chan->band != 3111 params->chandef.chan->band) 3112 return -EINVAL; 3113 3114 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3115 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3116 if (!ifmsh->pre_value) 3117 ifmsh->pre_value = 1; 3118 else 3119 ifmsh->pre_value++; 3120 } 3121 3122 /* see comments in the NL80211_IFTYPE_AP block */ 3123 if (params->count > 1) { 3124 err = ieee80211_mesh_csa_beacon(sdata, params); 3125 if (err < 0) { 3126 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3127 return err; 3128 } 3129 *changed |= err; 3130 } 3131 3132 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3133 ieee80211_send_action_csa(sdata, params); 3134 3135 break; 3136 } 3137 #endif 3138 default: 3139 return -EOPNOTSUPP; 3140 } 3141 3142 return 0; 3143 } 3144 3145 static int 3146 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3147 struct cfg80211_csa_settings *params) 3148 { 3149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3150 struct ieee80211_local *local = sdata->local; 3151 struct ieee80211_channel_switch ch_switch; 3152 struct ieee80211_chanctx_conf *conf; 3153 struct ieee80211_chanctx *chanctx; 3154 u32 changed = 0; 3155 int err; 3156 3157 sdata_assert_lock(sdata); 3158 lockdep_assert_held(&local->mtx); 3159 3160 if (!list_empty(&local->roc_list) || local->scanning) 3161 return -EBUSY; 3162 3163 if (sdata->wdev.cac_started) 3164 return -EBUSY; 3165 3166 if (cfg80211_chandef_identical(¶ms->chandef, 3167 &sdata->vif.bss_conf.chandef)) 3168 return -EINVAL; 3169 3170 /* don't allow another channel switch if one is already active. */ 3171 if (sdata->vif.csa_active) 3172 return -EBUSY; 3173 3174 mutex_lock(&local->chanctx_mtx); 3175 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 3176 lockdep_is_held(&local->chanctx_mtx)); 3177 if (!conf) { 3178 err = -EBUSY; 3179 goto out; 3180 } 3181 3182 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3183 if (!chanctx) { 3184 err = -EBUSY; 3185 goto out; 3186 } 3187 3188 ch_switch.timestamp = 0; 3189 ch_switch.device_timestamp = 0; 3190 ch_switch.block_tx = params->block_tx; 3191 ch_switch.chandef = params->chandef; 3192 ch_switch.count = params->count; 3193 3194 err = drv_pre_channel_switch(sdata, &ch_switch); 3195 if (err) 3196 goto out; 3197 3198 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3199 chanctx->mode, 3200 params->radar_required); 3201 if (err) 3202 goto out; 3203 3204 /* if reservation is invalid then this will fail */ 3205 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3206 if (err) { 3207 ieee80211_vif_unreserve_chanctx(sdata); 3208 goto out; 3209 } 3210 3211 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3212 if (err) { 3213 ieee80211_vif_unreserve_chanctx(sdata); 3214 goto out; 3215 } 3216 3217 sdata->csa_chandef = params->chandef; 3218 sdata->csa_block_tx = params->block_tx; 3219 sdata->vif.csa_active = true; 3220 3221 if (sdata->csa_block_tx) 3222 ieee80211_stop_vif_queues(local, sdata, 3223 IEEE80211_QUEUE_STOP_REASON_CSA); 3224 3225 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3226 params->count); 3227 3228 if (changed) { 3229 ieee80211_bss_info_change_notify(sdata, changed); 3230 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3231 } else { 3232 /* if the beacon didn't change, we can finalize immediately */ 3233 ieee80211_csa_finalize(sdata); 3234 } 3235 3236 out: 3237 mutex_unlock(&local->chanctx_mtx); 3238 return err; 3239 } 3240 3241 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3242 struct cfg80211_csa_settings *params) 3243 { 3244 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3245 struct ieee80211_local *local = sdata->local; 3246 int err; 3247 3248 mutex_lock(&local->mtx); 3249 err = __ieee80211_channel_switch(wiphy, dev, params); 3250 mutex_unlock(&local->mtx); 3251 3252 return err; 3253 } 3254 3255 static struct sk_buff *ieee80211_make_ack_skb(struct ieee80211_local *local, 3256 struct sk_buff *skb, u64 *cookie, 3257 gfp_t gfp) 3258 { 3259 unsigned long spin_flags; 3260 struct sk_buff *ack_skb; 3261 int id; 3262 3263 ack_skb = skb_copy(skb, gfp); 3264 if (!ack_skb) 3265 return ERR_PTR(-ENOMEM); 3266 3267 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3268 id = idr_alloc(&local->ack_status_frames, ack_skb, 3269 1, 0x10000, GFP_ATOMIC); 3270 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3271 3272 if (id < 0) { 3273 kfree_skb(ack_skb); 3274 return ERR_PTR(-ENOMEM); 3275 } 3276 3277 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3278 3279 *cookie = ieee80211_mgmt_tx_cookie(local); 3280 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3281 3282 return ack_skb; 3283 } 3284 3285 static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 3286 struct cfg80211_mgmt_tx_params *params, 3287 u64 *cookie) 3288 { 3289 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3290 struct ieee80211_local *local = sdata->local; 3291 struct sk_buff *skb, *ack_skb; 3292 struct sta_info *sta; 3293 const struct ieee80211_mgmt *mgmt = (void *)params->buf; 3294 bool need_offchan = false; 3295 u32 flags; 3296 int ret; 3297 u8 *data; 3298 3299 if (params->dont_wait_for_ack) 3300 flags = IEEE80211_TX_CTL_NO_ACK; 3301 else 3302 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | 3303 IEEE80211_TX_CTL_REQ_TX_STATUS; 3304 3305 if (params->no_cck) 3306 flags |= IEEE80211_TX_CTL_NO_CCK_RATE; 3307 3308 switch (sdata->vif.type) { 3309 case NL80211_IFTYPE_ADHOC: 3310 if (!sdata->vif.bss_conf.ibss_joined) 3311 need_offchan = true; 3312 /* fall through */ 3313 #ifdef CONFIG_MAC80211_MESH 3314 case NL80211_IFTYPE_MESH_POINT: 3315 if (ieee80211_vif_is_mesh(&sdata->vif) && 3316 !sdata->u.mesh.mesh_id_len) 3317 need_offchan = true; 3318 /* fall through */ 3319 #endif 3320 case NL80211_IFTYPE_AP: 3321 case NL80211_IFTYPE_AP_VLAN: 3322 case NL80211_IFTYPE_P2P_GO: 3323 if (sdata->vif.type != NL80211_IFTYPE_ADHOC && 3324 !ieee80211_vif_is_mesh(&sdata->vif) && 3325 !rcu_access_pointer(sdata->bss->beacon)) 3326 need_offchan = true; 3327 if (!ieee80211_is_action(mgmt->frame_control) || 3328 mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || 3329 mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || 3330 mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) 3331 break; 3332 rcu_read_lock(); 3333 sta = sta_info_get(sdata, mgmt->da); 3334 rcu_read_unlock(); 3335 if (!sta) 3336 return -ENOLINK; 3337 break; 3338 case NL80211_IFTYPE_STATION: 3339 case NL80211_IFTYPE_P2P_CLIENT: 3340 sdata_lock(sdata); 3341 if (!sdata->u.mgd.associated || 3342 (params->offchan && params->wait && 3343 local->ops->remain_on_channel && 3344 memcmp(sdata->u.mgd.associated->bssid, 3345 mgmt->bssid, ETH_ALEN))) 3346 need_offchan = true; 3347 sdata_unlock(sdata); 3348 break; 3349 case NL80211_IFTYPE_P2P_DEVICE: 3350 need_offchan = true; 3351 break; 3352 default: 3353 return -EOPNOTSUPP; 3354 } 3355 3356 /* configurations requiring offchan cannot work if no channel has been 3357 * specified 3358 */ 3359 if (need_offchan && !params->chan) 3360 return -EINVAL; 3361 3362 mutex_lock(&local->mtx); 3363 3364 /* Check if the operating channel is the requested channel */ 3365 if (!need_offchan) { 3366 struct ieee80211_chanctx_conf *chanctx_conf; 3367 3368 rcu_read_lock(); 3369 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3370 3371 if (chanctx_conf) { 3372 need_offchan = params->chan && 3373 (params->chan != 3374 chanctx_conf->def.chan); 3375 } else if (!params->chan) { 3376 ret = -EINVAL; 3377 rcu_read_unlock(); 3378 goto out_unlock; 3379 } else { 3380 need_offchan = true; 3381 } 3382 rcu_read_unlock(); 3383 } 3384 3385 if (need_offchan && !params->offchan) { 3386 ret = -EBUSY; 3387 goto out_unlock; 3388 } 3389 3390 skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); 3391 if (!skb) { 3392 ret = -ENOMEM; 3393 goto out_unlock; 3394 } 3395 skb_reserve(skb, local->hw.extra_tx_headroom); 3396 3397 data = skb_put(skb, params->len); 3398 memcpy(data, params->buf, params->len); 3399 3400 /* Update CSA counters */ 3401 if (sdata->vif.csa_active && 3402 (sdata->vif.type == NL80211_IFTYPE_AP || 3403 sdata->vif.type == NL80211_IFTYPE_MESH_POINT || 3404 sdata->vif.type == NL80211_IFTYPE_ADHOC) && 3405 params->n_csa_offsets) { 3406 int i; 3407 struct beacon_data *beacon = NULL; 3408 3409 rcu_read_lock(); 3410 3411 if (sdata->vif.type == NL80211_IFTYPE_AP) 3412 beacon = rcu_dereference(sdata->u.ap.beacon); 3413 else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) 3414 beacon = rcu_dereference(sdata->u.ibss.presp); 3415 else if (ieee80211_vif_is_mesh(&sdata->vif)) 3416 beacon = rcu_dereference(sdata->u.mesh.beacon); 3417 3418 if (beacon) 3419 for (i = 0; i < params->n_csa_offsets; i++) 3420 data[params->csa_offsets[i]] = 3421 beacon->csa_current_counter; 3422 3423 rcu_read_unlock(); 3424 } 3425 3426 IEEE80211_SKB_CB(skb)->flags = flags; 3427 3428 skb->dev = sdata->dev; 3429 3430 if (!params->dont_wait_for_ack) { 3431 /* make a copy to preserve the frame contents 3432 * in case of encryption. 3433 */ 3434 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, 3435 GFP_KERNEL); 3436 if (IS_ERR(ack_skb)) { 3437 ret = PTR_ERR(ack_skb); 3438 kfree_skb(skb); 3439 goto out_unlock; 3440 } 3441 } else { 3442 /* for cookie below */ 3443 ack_skb = skb; 3444 } 3445 3446 if (!need_offchan) { 3447 ieee80211_tx_skb(sdata, skb); 3448 ret = 0; 3449 goto out_unlock; 3450 } 3451 3452 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | 3453 IEEE80211_TX_INTFL_OFFCHAN_TX_OK; 3454 if (ieee80211_hw_check(&local->hw, QUEUE_CONTROL)) 3455 IEEE80211_SKB_CB(skb)->hw_queue = 3456 local->hw.offchannel_tx_hw_queue; 3457 3458 /* This will handle all kinds of coalescing and immediate TX */ 3459 ret = ieee80211_start_roc_work(local, sdata, params->chan, 3460 params->wait, cookie, skb, 3461 IEEE80211_ROC_TYPE_MGMT_TX); 3462 if (ret) 3463 kfree_skb(skb); 3464 out_unlock: 3465 mutex_unlock(&local->mtx); 3466 return ret; 3467 } 3468 3469 static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 3470 struct wireless_dev *wdev, 3471 u64 cookie) 3472 { 3473 struct ieee80211_local *local = wiphy_priv(wiphy); 3474 3475 return ieee80211_cancel_roc(local, cookie, true); 3476 } 3477 3478 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3479 struct wireless_dev *wdev, 3480 u16 frame_type, bool reg) 3481 { 3482 struct ieee80211_local *local = wiphy_priv(wiphy); 3483 3484 switch (frame_type) { 3485 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3486 if (reg) 3487 local->probe_req_reg++; 3488 else 3489 local->probe_req_reg--; 3490 3491 if (!local->open_count) 3492 break; 3493 3494 ieee80211_queue_work(&local->hw, &local->reconfig_filter); 3495 break; 3496 default: 3497 break; 3498 } 3499 } 3500 3501 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3502 { 3503 struct ieee80211_local *local = wiphy_priv(wiphy); 3504 3505 if (local->started) 3506 return -EOPNOTSUPP; 3507 3508 return drv_set_antenna(local, tx_ant, rx_ant); 3509 } 3510 3511 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3512 { 3513 struct ieee80211_local *local = wiphy_priv(wiphy); 3514 3515 return drv_get_antenna(local, tx_ant, rx_ant); 3516 } 3517 3518 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3519 struct net_device *dev, 3520 struct cfg80211_gtk_rekey_data *data) 3521 { 3522 struct ieee80211_local *local = wiphy_priv(wiphy); 3523 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3524 3525 if (!local->ops->set_rekey_data) 3526 return -EOPNOTSUPP; 3527 3528 drv_set_rekey_data(local, sdata, data); 3529 3530 return 0; 3531 } 3532 3533 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3534 const u8 *peer, u64 *cookie) 3535 { 3536 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3537 struct ieee80211_local *local = sdata->local; 3538 struct ieee80211_qos_hdr *nullfunc; 3539 struct sk_buff *skb, *ack_skb; 3540 int size = sizeof(*nullfunc); 3541 __le16 fc; 3542 bool qos; 3543 struct ieee80211_tx_info *info; 3544 struct sta_info *sta; 3545 struct ieee80211_chanctx_conf *chanctx_conf; 3546 enum ieee80211_band band; 3547 int ret; 3548 3549 /* the lock is needed to assign the cookie later */ 3550 mutex_lock(&local->mtx); 3551 3552 rcu_read_lock(); 3553 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3554 if (WARN_ON(!chanctx_conf)) { 3555 ret = -EINVAL; 3556 goto unlock; 3557 } 3558 band = chanctx_conf->def.chan->band; 3559 sta = sta_info_get_bss(sdata, peer); 3560 if (sta) { 3561 qos = sta->sta.wme; 3562 } else { 3563 ret = -ENOLINK; 3564 goto unlock; 3565 } 3566 3567 if (qos) { 3568 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3569 IEEE80211_STYPE_QOS_NULLFUNC | 3570 IEEE80211_FCTL_FROMDS); 3571 } else { 3572 size -= 2; 3573 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3574 IEEE80211_STYPE_NULLFUNC | 3575 IEEE80211_FCTL_FROMDS); 3576 } 3577 3578 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3579 if (!skb) { 3580 ret = -ENOMEM; 3581 goto unlock; 3582 } 3583 3584 skb->dev = dev; 3585 3586 skb_reserve(skb, local->hw.extra_tx_headroom); 3587 3588 nullfunc = (void *) skb_put(skb, size); 3589 nullfunc->frame_control = fc; 3590 nullfunc->duration_id = 0; 3591 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3592 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3593 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3594 nullfunc->seq_ctrl = 0; 3595 3596 info = IEEE80211_SKB_CB(skb); 3597 3598 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3599 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3600 info->band = band; 3601 3602 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3603 skb->priority = 7; 3604 if (qos) 3605 nullfunc->qos_ctrl = cpu_to_le16(7); 3606 3607 ack_skb = ieee80211_make_ack_skb(local, skb, cookie, GFP_ATOMIC); 3608 if (IS_ERR(ack_skb)) { 3609 kfree_skb(skb); 3610 ret = PTR_ERR(ack_skb); 3611 goto unlock; 3612 } 3613 3614 local_bh_disable(); 3615 ieee80211_xmit(sdata, sta, skb); 3616 local_bh_enable(); 3617 3618 ret = 0; 3619 unlock: 3620 rcu_read_unlock(); 3621 mutex_unlock(&local->mtx); 3622 3623 return ret; 3624 } 3625 3626 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3627 struct wireless_dev *wdev, 3628 struct cfg80211_chan_def *chandef) 3629 { 3630 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3631 struct ieee80211_local *local = wiphy_priv(wiphy); 3632 struct ieee80211_chanctx_conf *chanctx_conf; 3633 int ret = -ENODATA; 3634 3635 rcu_read_lock(); 3636 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3637 if (chanctx_conf) { 3638 *chandef = sdata->vif.bss_conf.chandef; 3639 ret = 0; 3640 } else if (local->open_count > 0 && 3641 local->open_count == local->monitors && 3642 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3643 if (local->use_chanctx) 3644 *chandef = local->monitor_chandef; 3645 else 3646 *chandef = local->_oper_chandef; 3647 ret = 0; 3648 } 3649 rcu_read_unlock(); 3650 3651 return ret; 3652 } 3653 3654 #ifdef CONFIG_PM 3655 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3656 { 3657 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3658 } 3659 #endif 3660 3661 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3662 struct net_device *dev, 3663 struct cfg80211_qos_map *qos_map) 3664 { 3665 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3666 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3667 3668 if (qos_map) { 3669 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3670 if (!new_qos_map) 3671 return -ENOMEM; 3672 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3673 } else { 3674 /* A NULL qos_map was passed to disable QoS mapping */ 3675 new_qos_map = NULL; 3676 } 3677 3678 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3679 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3680 if (old_qos_map) 3681 kfree_rcu(old_qos_map, rcu_head); 3682 3683 return 0; 3684 } 3685 3686 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3687 struct net_device *dev, 3688 struct cfg80211_chan_def *chandef) 3689 { 3690 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3691 int ret; 3692 u32 changed = 0; 3693 3694 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3695 if (ret == 0) 3696 ieee80211_bss_info_change_notify(sdata, changed); 3697 3698 return ret; 3699 } 3700 3701 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3702 u8 tsid, const u8 *peer, u8 up, 3703 u16 admitted_time) 3704 { 3705 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3706 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3707 int ac = ieee802_1d_to_ac[up]; 3708 3709 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3710 return -EOPNOTSUPP; 3711 3712 if (!(sdata->wmm_acm & BIT(up))) 3713 return -EINVAL; 3714 3715 if (ifmgd->tx_tspec[ac].admitted_time) 3716 return -EBUSY; 3717 3718 if (admitted_time) { 3719 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3720 ifmgd->tx_tspec[ac].tsid = tsid; 3721 ifmgd->tx_tspec[ac].up = up; 3722 } 3723 3724 return 0; 3725 } 3726 3727 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3728 u8 tsid, const u8 *peer) 3729 { 3730 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3731 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3732 struct ieee80211_local *local = wiphy_priv(wiphy); 3733 int ac; 3734 3735 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3736 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3737 3738 /* skip unused entries */ 3739 if (!tx_tspec->admitted_time) 3740 continue; 3741 3742 if (tx_tspec->tsid != tsid) 3743 continue; 3744 3745 /* due to this new packets will be reassigned to non-ACM ACs */ 3746 tx_tspec->up = -1; 3747 3748 /* Make sure that all packets have been sent to avoid to 3749 * restore the QoS params on packets that are still on the 3750 * queues. 3751 */ 3752 synchronize_net(); 3753 ieee80211_flush_queues(local, sdata, false); 3754 3755 /* restore the normal QoS parameters 3756 * (unconditionally to avoid races) 3757 */ 3758 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3759 tx_tspec->downgraded = false; 3760 ieee80211_sta_handle_tspec_ac_params(sdata); 3761 3762 /* finally clear all the data */ 3763 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3764 3765 return 0; 3766 } 3767 3768 return -ENOENT; 3769 } 3770 3771 const struct cfg80211_ops mac80211_config_ops = { 3772 .add_virtual_intf = ieee80211_add_iface, 3773 .del_virtual_intf = ieee80211_del_iface, 3774 .change_virtual_intf = ieee80211_change_iface, 3775 .start_p2p_device = ieee80211_start_p2p_device, 3776 .stop_p2p_device = ieee80211_stop_p2p_device, 3777 .add_key = ieee80211_add_key, 3778 .del_key = ieee80211_del_key, 3779 .get_key = ieee80211_get_key, 3780 .set_default_key = ieee80211_config_default_key, 3781 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3782 .start_ap = ieee80211_start_ap, 3783 .change_beacon = ieee80211_change_beacon, 3784 .stop_ap = ieee80211_stop_ap, 3785 .add_station = ieee80211_add_station, 3786 .del_station = ieee80211_del_station, 3787 .change_station = ieee80211_change_station, 3788 .get_station = ieee80211_get_station, 3789 .dump_station = ieee80211_dump_station, 3790 .dump_survey = ieee80211_dump_survey, 3791 #ifdef CONFIG_MAC80211_MESH 3792 .add_mpath = ieee80211_add_mpath, 3793 .del_mpath = ieee80211_del_mpath, 3794 .change_mpath = ieee80211_change_mpath, 3795 .get_mpath = ieee80211_get_mpath, 3796 .dump_mpath = ieee80211_dump_mpath, 3797 .get_mpp = ieee80211_get_mpp, 3798 .dump_mpp = ieee80211_dump_mpp, 3799 .update_mesh_config = ieee80211_update_mesh_config, 3800 .get_mesh_config = ieee80211_get_mesh_config, 3801 .join_mesh = ieee80211_join_mesh, 3802 .leave_mesh = ieee80211_leave_mesh, 3803 #endif 3804 .join_ocb = ieee80211_join_ocb, 3805 .leave_ocb = ieee80211_leave_ocb, 3806 .change_bss = ieee80211_change_bss, 3807 .set_txq_params = ieee80211_set_txq_params, 3808 .set_monitor_channel = ieee80211_set_monitor_channel, 3809 .suspend = ieee80211_suspend, 3810 .resume = ieee80211_resume, 3811 .scan = ieee80211_scan, 3812 .sched_scan_start = ieee80211_sched_scan_start, 3813 .sched_scan_stop = ieee80211_sched_scan_stop, 3814 .auth = ieee80211_auth, 3815 .assoc = ieee80211_assoc, 3816 .deauth = ieee80211_deauth, 3817 .disassoc = ieee80211_disassoc, 3818 .join_ibss = ieee80211_join_ibss, 3819 .leave_ibss = ieee80211_leave_ibss, 3820 .set_mcast_rate = ieee80211_set_mcast_rate, 3821 .set_wiphy_params = ieee80211_set_wiphy_params, 3822 .set_tx_power = ieee80211_set_tx_power, 3823 .get_tx_power = ieee80211_get_tx_power, 3824 .set_wds_peer = ieee80211_set_wds_peer, 3825 .rfkill_poll = ieee80211_rfkill_poll, 3826 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3827 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3828 .set_power_mgmt = ieee80211_set_power_mgmt, 3829 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3830 .remain_on_channel = ieee80211_remain_on_channel, 3831 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3832 .mgmt_tx = ieee80211_mgmt_tx, 3833 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3834 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3835 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3836 .set_antenna = ieee80211_set_antenna, 3837 .get_antenna = ieee80211_get_antenna, 3838 .set_rekey_data = ieee80211_set_rekey_data, 3839 .tdls_oper = ieee80211_tdls_oper, 3840 .tdls_mgmt = ieee80211_tdls_mgmt, 3841 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3842 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3843 .probe_client = ieee80211_probe_client, 3844 .set_noack_map = ieee80211_set_noack_map, 3845 #ifdef CONFIG_PM 3846 .set_wakeup = ieee80211_set_wakeup, 3847 #endif 3848 .get_channel = ieee80211_cfg_get_channel, 3849 .start_radar_detection = ieee80211_start_radar_detection, 3850 .channel_switch = ieee80211_channel_switch, 3851 .set_qos_map = ieee80211_set_qos_map, 3852 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3853 .add_tx_ts = ieee80211_add_tx_ts, 3854 .del_tx_ts = ieee80211_del_tx_ts, 3855 }; 3856