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 "rate.h" 21 #include "mesh.h" 22 #include "wme.h" 23 24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 25 const char *name, 26 unsigned char name_assign_type, 27 enum nl80211_iftype type, 28 u32 *flags, 29 struct vif_params *params) 30 { 31 struct ieee80211_local *local = wiphy_priv(wiphy); 32 struct wireless_dev *wdev; 33 struct ieee80211_sub_if_data *sdata; 34 int err; 35 36 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 37 if (err) 38 return ERR_PTR(err); 39 40 if (type == NL80211_IFTYPE_MONITOR && flags) { 41 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 42 sdata->u.mntr_flags = *flags; 43 } 44 45 return wdev; 46 } 47 48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 49 { 50 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 51 52 return 0; 53 } 54 55 static int ieee80211_change_iface(struct wiphy *wiphy, 56 struct net_device *dev, 57 enum nl80211_iftype type, u32 *flags, 58 struct vif_params *params) 59 { 60 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 61 int ret; 62 63 ret = ieee80211_if_change_type(sdata, type); 64 if (ret) 65 return ret; 66 67 if (type == NL80211_IFTYPE_AP_VLAN && 68 params && params->use_4addr == 0) 69 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 70 else if (type == NL80211_IFTYPE_STATION && 71 params && params->use_4addr >= 0) 72 sdata->u.mgd.use_4addr = params->use_4addr; 73 74 if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { 75 struct ieee80211_local *local = sdata->local; 76 77 if (ieee80211_sdata_running(sdata)) { 78 u32 mask = MONITOR_FLAG_COOK_FRAMES | 79 MONITOR_FLAG_ACTIVE; 80 81 /* 82 * Prohibit MONITOR_FLAG_COOK_FRAMES and 83 * MONITOR_FLAG_ACTIVE to be changed while the 84 * interface is up. 85 * Else we would need to add a lot of cruft 86 * to update everything: 87 * cooked_mntrs, monitor and all fif_* counters 88 * reconfigure hardware 89 */ 90 if ((*flags & mask) != (sdata->u.mntr_flags & mask)) 91 return -EBUSY; 92 93 ieee80211_adjust_monitor_flags(sdata, -1); 94 sdata->u.mntr_flags = *flags; 95 ieee80211_adjust_monitor_flags(sdata, 1); 96 97 ieee80211_configure_filter(local); 98 } else { 99 /* 100 * Because the interface is down, ieee80211_do_stop 101 * and ieee80211_do_open take care of "everything" 102 * mentioned in the comment above. 103 */ 104 sdata->u.mntr_flags = *flags; 105 } 106 } 107 108 return 0; 109 } 110 111 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 112 struct wireless_dev *wdev) 113 { 114 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 115 int ret; 116 117 mutex_lock(&sdata->local->chanctx_mtx); 118 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 119 mutex_unlock(&sdata->local->chanctx_mtx); 120 if (ret < 0) 121 return ret; 122 123 return ieee80211_do_open(wdev, true); 124 } 125 126 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 127 struct wireless_dev *wdev) 128 { 129 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 130 } 131 132 static int ieee80211_set_noack_map(struct wiphy *wiphy, 133 struct net_device *dev, 134 u16 noack_map) 135 { 136 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 137 138 sdata->noack_map = noack_map; 139 140 ieee80211_check_fast_xmit_iface(sdata); 141 142 return 0; 143 } 144 145 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 146 u8 key_idx, bool pairwise, const u8 *mac_addr, 147 struct key_params *params) 148 { 149 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 150 struct ieee80211_local *local = sdata->local; 151 struct sta_info *sta = NULL; 152 const struct ieee80211_cipher_scheme *cs = NULL; 153 struct ieee80211_key *key; 154 int err; 155 156 if (!ieee80211_sdata_running(sdata)) 157 return -ENETDOWN; 158 159 /* reject WEP and TKIP keys if WEP failed to initialize */ 160 switch (params->cipher) { 161 case WLAN_CIPHER_SUITE_WEP40: 162 case WLAN_CIPHER_SUITE_TKIP: 163 case WLAN_CIPHER_SUITE_WEP104: 164 if (IS_ERR(local->wep_tx_tfm)) 165 return -EINVAL; 166 break; 167 case WLAN_CIPHER_SUITE_CCMP: 168 case WLAN_CIPHER_SUITE_CCMP_256: 169 case WLAN_CIPHER_SUITE_AES_CMAC: 170 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 171 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 172 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 173 case WLAN_CIPHER_SUITE_GCMP: 174 case WLAN_CIPHER_SUITE_GCMP_256: 175 break; 176 default: 177 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); 178 break; 179 } 180 181 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 182 params->key, params->seq_len, params->seq, 183 cs); 184 if (IS_ERR(key)) 185 return PTR_ERR(key); 186 187 if (pairwise) 188 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 189 190 mutex_lock(&local->sta_mtx); 191 192 if (mac_addr) { 193 if (ieee80211_vif_is_mesh(&sdata->vif)) 194 sta = sta_info_get(sdata, mac_addr); 195 else 196 sta = sta_info_get_bss(sdata, mac_addr); 197 /* 198 * The ASSOC test makes sure the driver is ready to 199 * receive the key. When wpa_supplicant has roamed 200 * using FT, it attempts to set the key before 201 * association has completed, this rejects that attempt 202 * so it will set the key again after association. 203 * 204 * TODO: accept the key if we have a station entry and 205 * add it to the device after the station. 206 */ 207 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 208 ieee80211_key_free_unused(key); 209 err = -ENOENT; 210 goto out_unlock; 211 } 212 } 213 214 switch (sdata->vif.type) { 215 case NL80211_IFTYPE_STATION: 216 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 217 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 218 break; 219 case NL80211_IFTYPE_AP: 220 case NL80211_IFTYPE_AP_VLAN: 221 /* Keys without a station are used for TX only */ 222 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) 223 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 224 break; 225 case NL80211_IFTYPE_ADHOC: 226 /* no MFP (yet) */ 227 break; 228 case NL80211_IFTYPE_MESH_POINT: 229 #ifdef CONFIG_MAC80211_MESH 230 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 231 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 232 break; 233 #endif 234 case NL80211_IFTYPE_WDS: 235 case NL80211_IFTYPE_MONITOR: 236 case NL80211_IFTYPE_P2P_DEVICE: 237 case NL80211_IFTYPE_UNSPECIFIED: 238 case NUM_NL80211_IFTYPES: 239 case NL80211_IFTYPE_P2P_CLIENT: 240 case NL80211_IFTYPE_P2P_GO: 241 case NL80211_IFTYPE_OCB: 242 /* shouldn't happen */ 243 WARN_ON_ONCE(1); 244 break; 245 } 246 247 if (sta) 248 sta->cipher_scheme = cs; 249 250 err = ieee80211_key_link(key, sdata, sta); 251 252 out_unlock: 253 mutex_unlock(&local->sta_mtx); 254 255 return err; 256 } 257 258 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 259 u8 key_idx, bool pairwise, const u8 *mac_addr) 260 { 261 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 262 struct ieee80211_local *local = sdata->local; 263 struct sta_info *sta; 264 struct ieee80211_key *key = NULL; 265 int ret; 266 267 mutex_lock(&local->sta_mtx); 268 mutex_lock(&local->key_mtx); 269 270 if (mac_addr) { 271 ret = -ENOENT; 272 273 sta = sta_info_get_bss(sdata, mac_addr); 274 if (!sta) 275 goto out_unlock; 276 277 if (pairwise) 278 key = key_mtx_dereference(local, sta->ptk[key_idx]); 279 else 280 key = key_mtx_dereference(local, sta->gtk[key_idx]); 281 } else 282 key = key_mtx_dereference(local, sdata->keys[key_idx]); 283 284 if (!key) { 285 ret = -ENOENT; 286 goto out_unlock; 287 } 288 289 ieee80211_key_free(key, true); 290 291 ret = 0; 292 out_unlock: 293 mutex_unlock(&local->key_mtx); 294 mutex_unlock(&local->sta_mtx); 295 296 return ret; 297 } 298 299 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 300 u8 key_idx, bool pairwise, const u8 *mac_addr, 301 void *cookie, 302 void (*callback)(void *cookie, 303 struct key_params *params)) 304 { 305 struct ieee80211_sub_if_data *sdata; 306 struct sta_info *sta = NULL; 307 u8 seq[6] = {0}; 308 struct key_params params; 309 struct ieee80211_key *key = NULL; 310 u64 pn64; 311 u32 iv32; 312 u16 iv16; 313 int err = -ENOENT; 314 struct ieee80211_key_seq kseq = {}; 315 316 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 317 318 rcu_read_lock(); 319 320 if (mac_addr) { 321 sta = sta_info_get_bss(sdata, mac_addr); 322 if (!sta) 323 goto out; 324 325 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 326 key = rcu_dereference(sta->ptk[key_idx]); 327 else if (!pairwise && 328 key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS) 329 key = rcu_dereference(sta->gtk[key_idx]); 330 } else 331 key = rcu_dereference(sdata->keys[key_idx]); 332 333 if (!key) 334 goto out; 335 336 memset(¶ms, 0, sizeof(params)); 337 338 params.cipher = key->conf.cipher; 339 340 switch (key->conf.cipher) { 341 case WLAN_CIPHER_SUITE_TKIP: 342 iv32 = key->u.tkip.tx.iv32; 343 iv16 = key->u.tkip.tx.iv16; 344 345 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 346 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 347 drv_get_key_seq(sdata->local, key, &kseq); 348 iv32 = kseq.tkip.iv32; 349 iv16 = kseq.tkip.iv16; 350 } 351 352 seq[0] = iv16 & 0xff; 353 seq[1] = (iv16 >> 8) & 0xff; 354 seq[2] = iv32 & 0xff; 355 seq[3] = (iv32 >> 8) & 0xff; 356 seq[4] = (iv32 >> 16) & 0xff; 357 seq[5] = (iv32 >> 24) & 0xff; 358 params.seq = seq; 359 params.seq_len = 6; 360 break; 361 case WLAN_CIPHER_SUITE_CCMP: 362 case WLAN_CIPHER_SUITE_CCMP_256: 363 case WLAN_CIPHER_SUITE_AES_CMAC: 364 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 365 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 366 offsetof(typeof(kseq), aes_cmac)); 367 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 368 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 369 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 370 offsetof(typeof(kseq), aes_gmac)); 371 case WLAN_CIPHER_SUITE_GCMP: 372 case WLAN_CIPHER_SUITE_GCMP_256: 373 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 374 offsetof(typeof(kseq), gcmp)); 375 376 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 377 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 378 drv_get_key_seq(sdata->local, key, &kseq); 379 memcpy(seq, kseq.ccmp.pn, 6); 380 } else { 381 pn64 = atomic64_read(&key->conf.tx_pn); 382 seq[0] = pn64; 383 seq[1] = pn64 >> 8; 384 seq[2] = pn64 >> 16; 385 seq[3] = pn64 >> 24; 386 seq[4] = pn64 >> 32; 387 seq[5] = pn64 >> 40; 388 } 389 params.seq = seq; 390 params.seq_len = 6; 391 break; 392 default: 393 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 394 break; 395 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 396 break; 397 drv_get_key_seq(sdata->local, key, &kseq); 398 params.seq = kseq.hw.seq; 399 params.seq_len = kseq.hw.seq_len; 400 break; 401 } 402 403 params.key = key->conf.key; 404 params.key_len = key->conf.keylen; 405 406 callback(cookie, ¶ms); 407 err = 0; 408 409 out: 410 rcu_read_unlock(); 411 return err; 412 } 413 414 static int ieee80211_config_default_key(struct wiphy *wiphy, 415 struct net_device *dev, 416 u8 key_idx, bool uni, 417 bool multi) 418 { 419 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 420 421 ieee80211_set_default_key(sdata, key_idx, uni, multi); 422 423 return 0; 424 } 425 426 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 427 struct net_device *dev, 428 u8 key_idx) 429 { 430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 431 432 ieee80211_set_default_mgmt_key(sdata, key_idx); 433 434 return 0; 435 } 436 437 void sta_set_rate_info_tx(struct sta_info *sta, 438 const struct ieee80211_tx_rate *rate, 439 struct rate_info *rinfo) 440 { 441 rinfo->flags = 0; 442 if (rate->flags & IEEE80211_TX_RC_MCS) { 443 rinfo->flags |= RATE_INFO_FLAGS_MCS; 444 rinfo->mcs = rate->idx; 445 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 446 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 447 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 448 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 449 } else { 450 struct ieee80211_supported_band *sband; 451 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 452 u16 brate; 453 454 sband = sta->local->hw.wiphy->bands[ 455 ieee80211_get_sdata_band(sta->sdata)]; 456 brate = sband->bitrates[rate->idx].bitrate; 457 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 458 } 459 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 460 rinfo->bw = RATE_INFO_BW_40; 461 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 462 rinfo->bw = RATE_INFO_BW_80; 463 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 464 rinfo->bw = RATE_INFO_BW_160; 465 else 466 rinfo->bw = RATE_INFO_BW_20; 467 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 468 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 469 } 470 471 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 472 int idx, u8 *mac, struct station_info *sinfo) 473 { 474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 475 struct ieee80211_local *local = sdata->local; 476 struct sta_info *sta; 477 int ret = -ENOENT; 478 479 mutex_lock(&local->sta_mtx); 480 481 sta = sta_info_get_by_idx(sdata, idx); 482 if (sta) { 483 ret = 0; 484 memcpy(mac, sta->sta.addr, ETH_ALEN); 485 sta_set_sinfo(sta, sinfo); 486 } 487 488 mutex_unlock(&local->sta_mtx); 489 490 return ret; 491 } 492 493 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 494 int idx, struct survey_info *survey) 495 { 496 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 497 498 return drv_get_survey(local, idx, survey); 499 } 500 501 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 502 const u8 *mac, struct station_info *sinfo) 503 { 504 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 505 struct ieee80211_local *local = sdata->local; 506 struct sta_info *sta; 507 int ret = -ENOENT; 508 509 mutex_lock(&local->sta_mtx); 510 511 sta = sta_info_get_bss(sdata, mac); 512 if (sta) { 513 ret = 0; 514 sta_set_sinfo(sta, sinfo); 515 } 516 517 mutex_unlock(&local->sta_mtx); 518 519 return ret; 520 } 521 522 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 523 struct cfg80211_chan_def *chandef) 524 { 525 struct ieee80211_local *local = wiphy_priv(wiphy); 526 struct ieee80211_sub_if_data *sdata; 527 int ret = 0; 528 529 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 530 return 0; 531 532 mutex_lock(&local->mtx); 533 mutex_lock(&local->iflist_mtx); 534 if (local->use_chanctx) { 535 sdata = rcu_dereference_protected( 536 local->monitor_sdata, 537 lockdep_is_held(&local->iflist_mtx)); 538 if (sdata) { 539 ieee80211_vif_release_channel(sdata); 540 ret = ieee80211_vif_use_channel(sdata, chandef, 541 IEEE80211_CHANCTX_EXCLUSIVE); 542 } 543 } else if (local->open_count == local->monitors) { 544 local->_oper_chandef = *chandef; 545 ieee80211_hw_config(local, 0); 546 } 547 548 if (ret == 0) 549 local->monitor_chandef = *chandef; 550 mutex_unlock(&local->iflist_mtx); 551 mutex_unlock(&local->mtx); 552 553 return ret; 554 } 555 556 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 557 const u8 *resp, size_t resp_len, 558 const struct ieee80211_csa_settings *csa) 559 { 560 struct probe_resp *new, *old; 561 562 if (!resp || !resp_len) 563 return 1; 564 565 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 566 567 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 568 if (!new) 569 return -ENOMEM; 570 571 new->len = resp_len; 572 memcpy(new->data, resp, resp_len); 573 574 if (csa) 575 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 576 csa->n_counter_offsets_presp * 577 sizeof(new->csa_counter_offsets[0])); 578 579 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 580 if (old) 581 kfree_rcu(old, rcu_head); 582 583 return 0; 584 } 585 586 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 587 struct cfg80211_beacon_data *params, 588 const struct ieee80211_csa_settings *csa) 589 { 590 struct beacon_data *new, *old; 591 int new_head_len, new_tail_len; 592 int size, err; 593 u32 changed = BSS_CHANGED_BEACON; 594 595 old = sdata_dereference(sdata->u.ap.beacon, sdata); 596 597 598 /* Need to have a beacon head if we don't have one yet */ 599 if (!params->head && !old) 600 return -EINVAL; 601 602 /* new or old head? */ 603 if (params->head) 604 new_head_len = params->head_len; 605 else 606 new_head_len = old->head_len; 607 608 /* new or old tail? */ 609 if (params->tail || !old) 610 /* params->tail_len will be zero for !params->tail */ 611 new_tail_len = params->tail_len; 612 else 613 new_tail_len = old->tail_len; 614 615 size = sizeof(*new) + new_head_len + new_tail_len; 616 617 new = kzalloc(size, GFP_KERNEL); 618 if (!new) 619 return -ENOMEM; 620 621 /* start filling the new info now */ 622 623 /* 624 * pointers go into the block we allocated, 625 * memory is | beacon_data | head | tail | 626 */ 627 new->head = ((u8 *) new) + sizeof(*new); 628 new->tail = new->head + new_head_len; 629 new->head_len = new_head_len; 630 new->tail_len = new_tail_len; 631 632 if (csa) { 633 new->csa_current_counter = csa->count; 634 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 635 csa->n_counter_offsets_beacon * 636 sizeof(new->csa_counter_offsets[0])); 637 } 638 639 /* copy in head */ 640 if (params->head) 641 memcpy(new->head, params->head, new_head_len); 642 else 643 memcpy(new->head, old->head, new_head_len); 644 645 /* copy in optional tail */ 646 if (params->tail) 647 memcpy(new->tail, params->tail, new_tail_len); 648 else 649 if (old) 650 memcpy(new->tail, old->tail, new_tail_len); 651 652 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 653 params->probe_resp_len, csa); 654 if (err < 0) 655 return err; 656 if (err == 0) 657 changed |= BSS_CHANGED_AP_PROBE_RESP; 658 659 rcu_assign_pointer(sdata->u.ap.beacon, new); 660 661 if (old) 662 kfree_rcu(old, rcu_head); 663 664 return changed; 665 } 666 667 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 668 struct cfg80211_ap_settings *params) 669 { 670 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 671 struct ieee80211_local *local = sdata->local; 672 struct beacon_data *old; 673 struct ieee80211_sub_if_data *vlan; 674 u32 changed = BSS_CHANGED_BEACON_INT | 675 BSS_CHANGED_BEACON_ENABLED | 676 BSS_CHANGED_BEACON | 677 BSS_CHANGED_SSID | 678 BSS_CHANGED_P2P_PS | 679 BSS_CHANGED_TXPOWER; 680 int err; 681 682 old = sdata_dereference(sdata->u.ap.beacon, sdata); 683 if (old) 684 return -EALREADY; 685 686 switch (params->smps_mode) { 687 case NL80211_SMPS_OFF: 688 sdata->smps_mode = IEEE80211_SMPS_OFF; 689 break; 690 case NL80211_SMPS_STATIC: 691 sdata->smps_mode = IEEE80211_SMPS_STATIC; 692 break; 693 case NL80211_SMPS_DYNAMIC: 694 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 695 break; 696 default: 697 return -EINVAL; 698 } 699 sdata->needed_rx_chains = sdata->local->rx_chains; 700 701 mutex_lock(&local->mtx); 702 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 703 IEEE80211_CHANCTX_SHARED); 704 if (!err) 705 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 706 mutex_unlock(&local->mtx); 707 if (err) 708 return err; 709 710 /* 711 * Apply control port protocol, this allows us to 712 * not encrypt dynamic WEP control frames. 713 */ 714 sdata->control_port_protocol = params->crypto.control_port_ethertype; 715 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 716 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 717 ¶ms->crypto, 718 sdata->vif.type); 719 720 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 721 vlan->control_port_protocol = 722 params->crypto.control_port_ethertype; 723 vlan->control_port_no_encrypt = 724 params->crypto.control_port_no_encrypt; 725 vlan->encrypt_headroom = 726 ieee80211_cs_headroom(sdata->local, 727 ¶ms->crypto, 728 vlan->vif.type); 729 } 730 731 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 732 sdata->vif.bss_conf.dtim_period = params->dtim_period; 733 sdata->vif.bss_conf.enable_beacon = true; 734 735 sdata->vif.bss_conf.ssid_len = params->ssid_len; 736 if (params->ssid_len) 737 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 738 params->ssid_len); 739 sdata->vif.bss_conf.hidden_ssid = 740 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 741 742 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 743 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 744 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 745 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 746 if (params->p2p_opp_ps) 747 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 748 IEEE80211_P2P_OPPPS_ENABLE_BIT; 749 750 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 751 if (err < 0) { 752 ieee80211_vif_release_channel(sdata); 753 return err; 754 } 755 changed |= err; 756 757 err = drv_start_ap(sdata->local, sdata); 758 if (err) { 759 old = sdata_dereference(sdata->u.ap.beacon, sdata); 760 761 if (old) 762 kfree_rcu(old, rcu_head); 763 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 764 ieee80211_vif_release_channel(sdata); 765 return err; 766 } 767 768 ieee80211_recalc_dtim(local, sdata); 769 ieee80211_bss_info_change_notify(sdata, changed); 770 771 netif_carrier_on(dev); 772 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 773 netif_carrier_on(vlan->dev); 774 775 return 0; 776 } 777 778 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 779 struct cfg80211_beacon_data *params) 780 { 781 struct ieee80211_sub_if_data *sdata; 782 struct beacon_data *old; 783 int err; 784 785 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 786 sdata_assert_lock(sdata); 787 788 /* don't allow changing the beacon while CSA is in place - offset 789 * of channel switch counter may change 790 */ 791 if (sdata->vif.csa_active) 792 return -EBUSY; 793 794 old = sdata_dereference(sdata->u.ap.beacon, sdata); 795 if (!old) 796 return -ENOENT; 797 798 err = ieee80211_assign_beacon(sdata, params, NULL); 799 if (err < 0) 800 return err; 801 ieee80211_bss_info_change_notify(sdata, err); 802 return 0; 803 } 804 805 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 806 { 807 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 808 struct ieee80211_sub_if_data *vlan; 809 struct ieee80211_local *local = sdata->local; 810 struct beacon_data *old_beacon; 811 struct probe_resp *old_probe_resp; 812 struct cfg80211_chan_def chandef; 813 814 sdata_assert_lock(sdata); 815 816 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 817 if (!old_beacon) 818 return -ENOENT; 819 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 820 821 /* abort any running channel switch */ 822 mutex_lock(&local->mtx); 823 sdata->vif.csa_active = false; 824 if (sdata->csa_block_tx) { 825 ieee80211_wake_vif_queues(local, sdata, 826 IEEE80211_QUEUE_STOP_REASON_CSA); 827 sdata->csa_block_tx = false; 828 } 829 830 mutex_unlock(&local->mtx); 831 832 kfree(sdata->u.ap.next_beacon); 833 sdata->u.ap.next_beacon = NULL; 834 835 /* turn off carrier for this interface and dependent VLANs */ 836 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 837 netif_carrier_off(vlan->dev); 838 netif_carrier_off(dev); 839 840 /* remove beacon and probe response */ 841 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 842 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 843 kfree_rcu(old_beacon, rcu_head); 844 if (old_probe_resp) 845 kfree_rcu(old_probe_resp, rcu_head); 846 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 847 848 __sta_info_flush(sdata, true); 849 ieee80211_free_keys(sdata, true); 850 851 sdata->vif.bss_conf.enable_beacon = false; 852 sdata->vif.bss_conf.ssid_len = 0; 853 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 854 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 855 856 if (sdata->wdev.cac_started) { 857 chandef = sdata->vif.bss_conf.chandef; 858 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 859 cfg80211_cac_event(sdata->dev, &chandef, 860 NL80211_RADAR_CAC_ABORTED, 861 GFP_KERNEL); 862 } 863 864 drv_stop_ap(sdata->local, sdata); 865 866 /* free all potentially still buffered bcast frames */ 867 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 868 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 869 870 mutex_lock(&local->mtx); 871 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 872 ieee80211_vif_release_channel(sdata); 873 mutex_unlock(&local->mtx); 874 875 return 0; 876 } 877 878 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 879 struct iapp_layer2_update { 880 u8 da[ETH_ALEN]; /* broadcast */ 881 u8 sa[ETH_ALEN]; /* STA addr */ 882 __be16 len; /* 6 */ 883 u8 dsap; /* 0 */ 884 u8 ssap; /* 0 */ 885 u8 control; 886 u8 xid_info[3]; 887 } __packed; 888 889 static void ieee80211_send_layer2_update(struct sta_info *sta) 890 { 891 struct iapp_layer2_update *msg; 892 struct sk_buff *skb; 893 894 /* Send Level 2 Update Frame to update forwarding tables in layer 2 895 * bridge devices */ 896 897 skb = dev_alloc_skb(sizeof(*msg)); 898 if (!skb) 899 return; 900 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 901 902 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 903 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 904 905 eth_broadcast_addr(msg->da); 906 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 907 msg->len = htons(6); 908 msg->dsap = 0; 909 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 910 msg->control = 0xaf; /* XID response lsb.1111F101. 911 * F=0 (no poll command; unsolicited frame) */ 912 msg->xid_info[0] = 0x81; /* XID format identifier */ 913 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 914 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 915 916 skb->dev = sta->sdata->dev; 917 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 918 memset(skb->cb, 0, sizeof(skb->cb)); 919 netif_rx_ni(skb); 920 } 921 922 static int sta_apply_auth_flags(struct ieee80211_local *local, 923 struct sta_info *sta, 924 u32 mask, u32 set) 925 { 926 int ret; 927 928 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 929 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 930 !test_sta_flag(sta, WLAN_STA_AUTH)) { 931 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 932 if (ret) 933 return ret; 934 } 935 936 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 937 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 938 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 939 /* 940 * When peer becomes associated, init rate control as 941 * well. Some drivers require rate control initialized 942 * before drv_sta_state() is called. 943 */ 944 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 945 rate_control_rate_init(sta); 946 947 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 948 if (ret) 949 return ret; 950 } 951 952 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 953 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 954 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 955 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 956 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 957 else 958 ret = 0; 959 if (ret) 960 return ret; 961 } 962 963 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 964 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 965 test_sta_flag(sta, WLAN_STA_ASSOC)) { 966 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 967 if (ret) 968 return ret; 969 } 970 971 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 972 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 973 test_sta_flag(sta, WLAN_STA_AUTH)) { 974 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 975 if (ret) 976 return ret; 977 } 978 979 return 0; 980 } 981 982 static void sta_apply_mesh_params(struct ieee80211_local *local, 983 struct sta_info *sta, 984 struct station_parameters *params) 985 { 986 #ifdef CONFIG_MAC80211_MESH 987 struct ieee80211_sub_if_data *sdata = sta->sdata; 988 u32 changed = 0; 989 990 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 991 switch (params->plink_state) { 992 case NL80211_PLINK_ESTAB: 993 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 994 changed = mesh_plink_inc_estab_count(sdata); 995 sta->mesh->plink_state = params->plink_state; 996 997 ieee80211_mps_sta_status_update(sta); 998 changed |= ieee80211_mps_set_sta_local_pm(sta, 999 sdata->u.mesh.mshcfg.power_mode); 1000 break; 1001 case NL80211_PLINK_LISTEN: 1002 case NL80211_PLINK_BLOCKED: 1003 case NL80211_PLINK_OPN_SNT: 1004 case NL80211_PLINK_OPN_RCVD: 1005 case NL80211_PLINK_CNF_RCVD: 1006 case NL80211_PLINK_HOLDING: 1007 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1008 changed = mesh_plink_dec_estab_count(sdata); 1009 sta->mesh->plink_state = params->plink_state; 1010 1011 ieee80211_mps_sta_status_update(sta); 1012 changed |= ieee80211_mps_set_sta_local_pm(sta, 1013 NL80211_MESH_POWER_UNKNOWN); 1014 break; 1015 default: 1016 /* nothing */ 1017 break; 1018 } 1019 } 1020 1021 switch (params->plink_action) { 1022 case NL80211_PLINK_ACTION_NO_ACTION: 1023 /* nothing */ 1024 break; 1025 case NL80211_PLINK_ACTION_OPEN: 1026 changed |= mesh_plink_open(sta); 1027 break; 1028 case NL80211_PLINK_ACTION_BLOCK: 1029 changed |= mesh_plink_block(sta); 1030 break; 1031 } 1032 1033 if (params->local_pm) 1034 changed |= ieee80211_mps_set_sta_local_pm(sta, 1035 params->local_pm); 1036 1037 ieee80211_mbss_info_change_notify(sdata, changed); 1038 #endif 1039 } 1040 1041 static int sta_apply_parameters(struct ieee80211_local *local, 1042 struct sta_info *sta, 1043 struct station_parameters *params) 1044 { 1045 int ret = 0; 1046 struct ieee80211_supported_band *sband; 1047 struct ieee80211_sub_if_data *sdata = sta->sdata; 1048 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1049 u32 mask, set; 1050 1051 sband = local->hw.wiphy->bands[band]; 1052 1053 mask = params->sta_flags_mask; 1054 set = params->sta_flags_set; 1055 1056 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1057 /* 1058 * In mesh mode, ASSOCIATED isn't part of the nl80211 1059 * API but must follow AUTHENTICATED for driver state. 1060 */ 1061 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1062 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1063 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1064 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1065 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1066 /* 1067 * TDLS -- everything follows authorized, but 1068 * only becoming authorized is possible, not 1069 * going back 1070 */ 1071 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1072 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1073 BIT(NL80211_STA_FLAG_ASSOCIATED); 1074 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1075 BIT(NL80211_STA_FLAG_ASSOCIATED); 1076 } 1077 } 1078 1079 if (mask & BIT(NL80211_STA_FLAG_WME) && 1080 local->hw.queues >= IEEE80211_NUM_ACS) 1081 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1082 1083 /* auth flags will be set later for TDLS, 1084 * and for unassociated stations that move to assocaited */ 1085 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1086 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1087 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1088 ret = sta_apply_auth_flags(local, sta, mask, set); 1089 if (ret) 1090 return ret; 1091 } 1092 1093 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1094 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1095 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1096 else 1097 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1098 } 1099 1100 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1101 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1102 if (set & BIT(NL80211_STA_FLAG_MFP)) 1103 set_sta_flag(sta, WLAN_STA_MFP); 1104 else 1105 clear_sta_flag(sta, WLAN_STA_MFP); 1106 } 1107 1108 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1109 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1110 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1111 else 1112 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1113 } 1114 1115 /* mark TDLS channel switch support, if the AP allows it */ 1116 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1117 !sdata->u.mgd.tdls_chan_switch_prohibited && 1118 params->ext_capab_len >= 4 && 1119 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1120 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1121 1122 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1123 !sdata->u.mgd.tdls_wider_bw_prohibited && 1124 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1125 params->ext_capab_len >= 8 && 1126 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1127 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1128 1129 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1130 sta->sta.uapsd_queues = params->uapsd_queues; 1131 sta->sta.max_sp = params->max_sp; 1132 } 1133 1134 /* 1135 * cfg80211 validates this (1-2007) and allows setting the AID 1136 * only when creating a new station entry 1137 */ 1138 if (params->aid) 1139 sta->sta.aid = params->aid; 1140 1141 /* 1142 * Some of the following updates would be racy if called on an 1143 * existing station, via ieee80211_change_station(). However, 1144 * all such changes are rejected by cfg80211 except for updates 1145 * changing the supported rates on an existing but not yet used 1146 * TDLS peer. 1147 */ 1148 1149 if (params->listen_interval >= 0) 1150 sta->listen_interval = params->listen_interval; 1151 1152 if (params->supported_rates) { 1153 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1154 sband, params->supported_rates, 1155 params->supported_rates_len, 1156 &sta->sta.supp_rates[band]); 1157 } 1158 1159 if (params->ht_capa) 1160 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1161 params->ht_capa, sta); 1162 1163 if (params->vht_capa) 1164 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1165 params->vht_capa, sta); 1166 1167 if (params->opmode_notif_used) { 1168 /* returned value is only needed for rc update, but the 1169 * rc isn't initialized here yet, so ignore it 1170 */ 1171 __ieee80211_vht_handle_opmode(sdata, sta, 1172 params->opmode_notif, band); 1173 } 1174 1175 if (ieee80211_vif_is_mesh(&sdata->vif)) 1176 sta_apply_mesh_params(local, sta, params); 1177 1178 /* set the STA state after all sta info from usermode has been set */ 1179 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1180 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1181 ret = sta_apply_auth_flags(local, sta, mask, set); 1182 if (ret) 1183 return ret; 1184 } 1185 1186 return 0; 1187 } 1188 1189 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1190 const u8 *mac, 1191 struct station_parameters *params) 1192 { 1193 struct ieee80211_local *local = wiphy_priv(wiphy); 1194 struct sta_info *sta; 1195 struct ieee80211_sub_if_data *sdata; 1196 int err; 1197 int layer2_update; 1198 1199 if (params->vlan) { 1200 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1201 1202 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1203 sdata->vif.type != NL80211_IFTYPE_AP) 1204 return -EINVAL; 1205 } else 1206 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1207 1208 if (ether_addr_equal(mac, sdata->vif.addr)) 1209 return -EINVAL; 1210 1211 if (is_multicast_ether_addr(mac)) 1212 return -EINVAL; 1213 1214 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1215 if (!sta) 1216 return -ENOMEM; 1217 1218 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1219 sta->sta.tdls = true; 1220 1221 err = sta_apply_parameters(local, sta, params); 1222 if (err) { 1223 sta_info_free(local, sta); 1224 return err; 1225 } 1226 1227 /* 1228 * for TDLS and for unassociated station, rate control should be 1229 * initialized only when rates are known and station is marked 1230 * authorized/associated 1231 */ 1232 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1233 test_sta_flag(sta, WLAN_STA_ASSOC)) 1234 rate_control_rate_init(sta); 1235 1236 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1237 sdata->vif.type == NL80211_IFTYPE_AP; 1238 1239 err = sta_info_insert_rcu(sta); 1240 if (err) { 1241 rcu_read_unlock(); 1242 return err; 1243 } 1244 1245 if (layer2_update) 1246 ieee80211_send_layer2_update(sta); 1247 1248 rcu_read_unlock(); 1249 1250 return 0; 1251 } 1252 1253 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1254 struct station_del_parameters *params) 1255 { 1256 struct ieee80211_sub_if_data *sdata; 1257 1258 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1259 1260 if (params->mac) 1261 return sta_info_destroy_addr_bss(sdata, params->mac); 1262 1263 sta_info_flush(sdata); 1264 return 0; 1265 } 1266 1267 static int ieee80211_change_station(struct wiphy *wiphy, 1268 struct net_device *dev, const u8 *mac, 1269 struct station_parameters *params) 1270 { 1271 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1272 struct ieee80211_local *local = wiphy_priv(wiphy); 1273 struct sta_info *sta; 1274 struct ieee80211_sub_if_data *vlansdata; 1275 enum cfg80211_station_type statype; 1276 int err; 1277 1278 mutex_lock(&local->sta_mtx); 1279 1280 sta = sta_info_get_bss(sdata, mac); 1281 if (!sta) { 1282 err = -ENOENT; 1283 goto out_err; 1284 } 1285 1286 switch (sdata->vif.type) { 1287 case NL80211_IFTYPE_MESH_POINT: 1288 if (sdata->u.mesh.user_mpm) 1289 statype = CFG80211_STA_MESH_PEER_USER; 1290 else 1291 statype = CFG80211_STA_MESH_PEER_KERNEL; 1292 break; 1293 case NL80211_IFTYPE_ADHOC: 1294 statype = CFG80211_STA_IBSS; 1295 break; 1296 case NL80211_IFTYPE_STATION: 1297 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1298 statype = CFG80211_STA_AP_STA; 1299 break; 1300 } 1301 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1302 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1303 else 1304 statype = CFG80211_STA_TDLS_PEER_SETUP; 1305 break; 1306 case NL80211_IFTYPE_AP: 1307 case NL80211_IFTYPE_AP_VLAN: 1308 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1309 statype = CFG80211_STA_AP_CLIENT; 1310 else 1311 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1312 break; 1313 default: 1314 err = -EOPNOTSUPP; 1315 goto out_err; 1316 } 1317 1318 err = cfg80211_check_station_change(wiphy, params, statype); 1319 if (err) 1320 goto out_err; 1321 1322 if (params->vlan && params->vlan != sta->sdata->dev) { 1323 bool prev_4addr = false; 1324 bool new_4addr = false; 1325 1326 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1327 1328 if (params->vlan->ieee80211_ptr->use_4addr) { 1329 if (vlansdata->u.vlan.sta) { 1330 err = -EBUSY; 1331 goto out_err; 1332 } 1333 1334 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1335 new_4addr = true; 1336 } 1337 1338 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1339 sta->sdata->u.vlan.sta) { 1340 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1341 prev_4addr = true; 1342 } 1343 1344 sta->sdata = vlansdata; 1345 ieee80211_check_fast_xmit(sta); 1346 1347 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1348 prev_4addr != new_4addr) { 1349 if (new_4addr) 1350 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1351 else 1352 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1353 } 1354 1355 ieee80211_send_layer2_update(sta); 1356 } 1357 1358 err = sta_apply_parameters(local, sta, params); 1359 if (err) 1360 goto out_err; 1361 1362 mutex_unlock(&local->sta_mtx); 1363 1364 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1365 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1366 sta->known_smps_mode != sta->sdata->bss->req_smps && 1367 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1368 sta_info_tx_streams(sta) != 1) { 1369 ht_dbg(sta->sdata, 1370 "%pM just authorized and MIMO capable - update SMPS\n", 1371 sta->sta.addr); 1372 ieee80211_send_smps_action(sta->sdata, 1373 sta->sdata->bss->req_smps, 1374 sta->sta.addr, 1375 sta->sdata->vif.bss_conf.bssid); 1376 } 1377 1378 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1379 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1380 ieee80211_recalc_ps(local); 1381 ieee80211_recalc_ps_vif(sdata); 1382 } 1383 1384 return 0; 1385 out_err: 1386 mutex_unlock(&local->sta_mtx); 1387 return err; 1388 } 1389 1390 #ifdef CONFIG_MAC80211_MESH 1391 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1392 const u8 *dst, const u8 *next_hop) 1393 { 1394 struct ieee80211_sub_if_data *sdata; 1395 struct mesh_path *mpath; 1396 struct sta_info *sta; 1397 1398 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1399 1400 rcu_read_lock(); 1401 sta = sta_info_get(sdata, next_hop); 1402 if (!sta) { 1403 rcu_read_unlock(); 1404 return -ENOENT; 1405 } 1406 1407 mpath = mesh_path_add(sdata, dst); 1408 if (IS_ERR(mpath)) { 1409 rcu_read_unlock(); 1410 return PTR_ERR(mpath); 1411 } 1412 1413 mesh_path_fix_nexthop(mpath, sta); 1414 1415 rcu_read_unlock(); 1416 return 0; 1417 } 1418 1419 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1420 const u8 *dst) 1421 { 1422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1423 1424 if (dst) 1425 return mesh_path_del(sdata, dst); 1426 1427 mesh_path_flush_by_iface(sdata); 1428 return 0; 1429 } 1430 1431 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1432 const u8 *dst, const u8 *next_hop) 1433 { 1434 struct ieee80211_sub_if_data *sdata; 1435 struct mesh_path *mpath; 1436 struct sta_info *sta; 1437 1438 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1439 1440 rcu_read_lock(); 1441 1442 sta = sta_info_get(sdata, next_hop); 1443 if (!sta) { 1444 rcu_read_unlock(); 1445 return -ENOENT; 1446 } 1447 1448 mpath = mesh_path_lookup(sdata, dst); 1449 if (!mpath) { 1450 rcu_read_unlock(); 1451 return -ENOENT; 1452 } 1453 1454 mesh_path_fix_nexthop(mpath, sta); 1455 1456 rcu_read_unlock(); 1457 return 0; 1458 } 1459 1460 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1461 struct mpath_info *pinfo) 1462 { 1463 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1464 1465 if (next_hop_sta) 1466 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1467 else 1468 eth_zero_addr(next_hop); 1469 1470 memset(pinfo, 0, sizeof(*pinfo)); 1471 1472 pinfo->generation = mesh_paths_generation; 1473 1474 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1475 MPATH_INFO_SN | 1476 MPATH_INFO_METRIC | 1477 MPATH_INFO_EXPTIME | 1478 MPATH_INFO_DISCOVERY_TIMEOUT | 1479 MPATH_INFO_DISCOVERY_RETRIES | 1480 MPATH_INFO_FLAGS; 1481 1482 pinfo->frame_qlen = mpath->frame_queue.qlen; 1483 pinfo->sn = mpath->sn; 1484 pinfo->metric = mpath->metric; 1485 if (time_before(jiffies, mpath->exp_time)) 1486 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1487 pinfo->discovery_timeout = 1488 jiffies_to_msecs(mpath->discovery_timeout); 1489 pinfo->discovery_retries = mpath->discovery_retries; 1490 if (mpath->flags & MESH_PATH_ACTIVE) 1491 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1492 if (mpath->flags & MESH_PATH_RESOLVING) 1493 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1494 if (mpath->flags & MESH_PATH_SN_VALID) 1495 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1496 if (mpath->flags & MESH_PATH_FIXED) 1497 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1498 if (mpath->flags & MESH_PATH_RESOLVED) 1499 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1500 } 1501 1502 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1503 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1504 1505 { 1506 struct ieee80211_sub_if_data *sdata; 1507 struct mesh_path *mpath; 1508 1509 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1510 1511 rcu_read_lock(); 1512 mpath = mesh_path_lookup(sdata, dst); 1513 if (!mpath) { 1514 rcu_read_unlock(); 1515 return -ENOENT; 1516 } 1517 memcpy(dst, mpath->dst, ETH_ALEN); 1518 mpath_set_pinfo(mpath, next_hop, pinfo); 1519 rcu_read_unlock(); 1520 return 0; 1521 } 1522 1523 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1524 int idx, u8 *dst, u8 *next_hop, 1525 struct mpath_info *pinfo) 1526 { 1527 struct ieee80211_sub_if_data *sdata; 1528 struct mesh_path *mpath; 1529 1530 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1531 1532 rcu_read_lock(); 1533 mpath = mesh_path_lookup_by_idx(sdata, idx); 1534 if (!mpath) { 1535 rcu_read_unlock(); 1536 return -ENOENT; 1537 } 1538 memcpy(dst, mpath->dst, ETH_ALEN); 1539 mpath_set_pinfo(mpath, next_hop, pinfo); 1540 rcu_read_unlock(); 1541 return 0; 1542 } 1543 1544 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1545 struct mpath_info *pinfo) 1546 { 1547 memset(pinfo, 0, sizeof(*pinfo)); 1548 memcpy(mpp, mpath->mpp, ETH_ALEN); 1549 1550 pinfo->generation = mpp_paths_generation; 1551 } 1552 1553 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1554 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1555 1556 { 1557 struct ieee80211_sub_if_data *sdata; 1558 struct mesh_path *mpath; 1559 1560 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1561 1562 rcu_read_lock(); 1563 mpath = mpp_path_lookup(sdata, dst); 1564 if (!mpath) { 1565 rcu_read_unlock(); 1566 return -ENOENT; 1567 } 1568 memcpy(dst, mpath->dst, ETH_ALEN); 1569 mpp_set_pinfo(mpath, mpp, pinfo); 1570 rcu_read_unlock(); 1571 return 0; 1572 } 1573 1574 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1575 int idx, u8 *dst, u8 *mpp, 1576 struct mpath_info *pinfo) 1577 { 1578 struct ieee80211_sub_if_data *sdata; 1579 struct mesh_path *mpath; 1580 1581 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1582 1583 rcu_read_lock(); 1584 mpath = mpp_path_lookup_by_idx(sdata, idx); 1585 if (!mpath) { 1586 rcu_read_unlock(); 1587 return -ENOENT; 1588 } 1589 memcpy(dst, mpath->dst, ETH_ALEN); 1590 mpp_set_pinfo(mpath, mpp, pinfo); 1591 rcu_read_unlock(); 1592 return 0; 1593 } 1594 1595 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1596 struct net_device *dev, 1597 struct mesh_config *conf) 1598 { 1599 struct ieee80211_sub_if_data *sdata; 1600 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1601 1602 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1603 return 0; 1604 } 1605 1606 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1607 { 1608 return (mask >> (parm-1)) & 0x1; 1609 } 1610 1611 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1612 const struct mesh_setup *setup) 1613 { 1614 u8 *new_ie; 1615 const u8 *old_ie; 1616 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1617 struct ieee80211_sub_if_data, u.mesh); 1618 1619 /* allocate information elements */ 1620 new_ie = NULL; 1621 old_ie = ifmsh->ie; 1622 1623 if (setup->ie_len) { 1624 new_ie = kmemdup(setup->ie, setup->ie_len, 1625 GFP_KERNEL); 1626 if (!new_ie) 1627 return -ENOMEM; 1628 } 1629 ifmsh->ie_len = setup->ie_len; 1630 ifmsh->ie = new_ie; 1631 kfree(old_ie); 1632 1633 /* now copy the rest of the setup parameters */ 1634 ifmsh->mesh_id_len = setup->mesh_id_len; 1635 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1636 ifmsh->mesh_sp_id = setup->sync_method; 1637 ifmsh->mesh_pp_id = setup->path_sel_proto; 1638 ifmsh->mesh_pm_id = setup->path_metric; 1639 ifmsh->user_mpm = setup->user_mpm; 1640 ifmsh->mesh_auth_id = setup->auth_id; 1641 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1642 if (setup->is_authenticated) 1643 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1644 if (setup->is_secure) 1645 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1646 1647 /* mcast rate setting in Mesh Node */ 1648 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1649 sizeof(setup->mcast_rate)); 1650 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1651 1652 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1653 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1654 1655 return 0; 1656 } 1657 1658 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1659 struct net_device *dev, u32 mask, 1660 const struct mesh_config *nconf) 1661 { 1662 struct mesh_config *conf; 1663 struct ieee80211_sub_if_data *sdata; 1664 struct ieee80211_if_mesh *ifmsh; 1665 1666 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1667 ifmsh = &sdata->u.mesh; 1668 1669 /* Set the config options which we are interested in setting */ 1670 conf = &(sdata->u.mesh.mshcfg); 1671 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1672 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1673 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1674 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1675 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1676 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1677 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1678 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1679 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1680 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1681 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1682 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1683 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1684 conf->element_ttl = nconf->element_ttl; 1685 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1686 if (ifmsh->user_mpm) 1687 return -EBUSY; 1688 conf->auto_open_plinks = nconf->auto_open_plinks; 1689 } 1690 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1691 conf->dot11MeshNbrOffsetMaxNeighbor = 1692 nconf->dot11MeshNbrOffsetMaxNeighbor; 1693 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1694 conf->dot11MeshHWMPmaxPREQretries = 1695 nconf->dot11MeshHWMPmaxPREQretries; 1696 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1697 conf->path_refresh_time = nconf->path_refresh_time; 1698 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1699 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1700 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1701 conf->dot11MeshHWMPactivePathTimeout = 1702 nconf->dot11MeshHWMPactivePathTimeout; 1703 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1704 conf->dot11MeshHWMPpreqMinInterval = 1705 nconf->dot11MeshHWMPpreqMinInterval; 1706 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1707 conf->dot11MeshHWMPperrMinInterval = 1708 nconf->dot11MeshHWMPperrMinInterval; 1709 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1710 mask)) 1711 conf->dot11MeshHWMPnetDiameterTraversalTime = 1712 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1714 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1715 ieee80211_mesh_root_setup(ifmsh); 1716 } 1717 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1718 /* our current gate announcement implementation rides on root 1719 * announcements, so require this ifmsh to also be a root node 1720 * */ 1721 if (nconf->dot11MeshGateAnnouncementProtocol && 1722 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1723 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1724 ieee80211_mesh_root_setup(ifmsh); 1725 } 1726 conf->dot11MeshGateAnnouncementProtocol = 1727 nconf->dot11MeshGateAnnouncementProtocol; 1728 } 1729 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1730 conf->dot11MeshHWMPRannInterval = 1731 nconf->dot11MeshHWMPRannInterval; 1732 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1733 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1734 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1735 /* our RSSI threshold implementation is supported only for 1736 * devices that report signal in dBm. 1737 */ 1738 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1739 return -ENOTSUPP; 1740 conf->rssi_threshold = nconf->rssi_threshold; 1741 } 1742 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1743 conf->ht_opmode = nconf->ht_opmode; 1744 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1745 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1746 } 1747 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1748 conf->dot11MeshHWMPactivePathToRootTimeout = 1749 nconf->dot11MeshHWMPactivePathToRootTimeout; 1750 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1751 conf->dot11MeshHWMProotInterval = 1752 nconf->dot11MeshHWMProotInterval; 1753 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1754 conf->dot11MeshHWMPconfirmationInterval = 1755 nconf->dot11MeshHWMPconfirmationInterval; 1756 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1757 conf->power_mode = nconf->power_mode; 1758 ieee80211_mps_local_status_update(sdata); 1759 } 1760 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1761 conf->dot11MeshAwakeWindowDuration = 1762 nconf->dot11MeshAwakeWindowDuration; 1763 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1764 conf->plink_timeout = nconf->plink_timeout; 1765 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1766 return 0; 1767 } 1768 1769 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1770 const struct mesh_config *conf, 1771 const struct mesh_setup *setup) 1772 { 1773 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1774 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1775 int err; 1776 1777 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1778 err = copy_mesh_setup(ifmsh, setup); 1779 if (err) 1780 return err; 1781 1782 /* can mesh use other SMPS modes? */ 1783 sdata->smps_mode = IEEE80211_SMPS_OFF; 1784 sdata->needed_rx_chains = sdata->local->rx_chains; 1785 1786 mutex_lock(&sdata->local->mtx); 1787 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1788 IEEE80211_CHANCTX_SHARED); 1789 mutex_unlock(&sdata->local->mtx); 1790 if (err) 1791 return err; 1792 1793 return ieee80211_start_mesh(sdata); 1794 } 1795 1796 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1797 { 1798 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1799 1800 ieee80211_stop_mesh(sdata); 1801 mutex_lock(&sdata->local->mtx); 1802 ieee80211_vif_release_channel(sdata); 1803 mutex_unlock(&sdata->local->mtx); 1804 1805 return 0; 1806 } 1807 #endif 1808 1809 static int ieee80211_change_bss(struct wiphy *wiphy, 1810 struct net_device *dev, 1811 struct bss_parameters *params) 1812 { 1813 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1814 enum ieee80211_band band; 1815 u32 changed = 0; 1816 1817 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1818 return -ENOENT; 1819 1820 band = ieee80211_get_sdata_band(sdata); 1821 1822 if (params->use_cts_prot >= 0) { 1823 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1824 changed |= BSS_CHANGED_ERP_CTS_PROT; 1825 } 1826 if (params->use_short_preamble >= 0) { 1827 sdata->vif.bss_conf.use_short_preamble = 1828 params->use_short_preamble; 1829 changed |= BSS_CHANGED_ERP_PREAMBLE; 1830 } 1831 1832 if (!sdata->vif.bss_conf.use_short_slot && 1833 band == IEEE80211_BAND_5GHZ) { 1834 sdata->vif.bss_conf.use_short_slot = true; 1835 changed |= BSS_CHANGED_ERP_SLOT; 1836 } 1837 1838 if (params->use_short_slot_time >= 0) { 1839 sdata->vif.bss_conf.use_short_slot = 1840 params->use_short_slot_time; 1841 changed |= BSS_CHANGED_ERP_SLOT; 1842 } 1843 1844 if (params->basic_rates) { 1845 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1846 wiphy->bands[band], 1847 params->basic_rates, 1848 params->basic_rates_len, 1849 &sdata->vif.bss_conf.basic_rates); 1850 changed |= BSS_CHANGED_BASIC_RATES; 1851 } 1852 1853 if (params->ap_isolate >= 0) { 1854 if (params->ap_isolate) 1855 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1856 else 1857 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1858 } 1859 1860 if (params->ht_opmode >= 0) { 1861 sdata->vif.bss_conf.ht_operation_mode = 1862 (u16) params->ht_opmode; 1863 changed |= BSS_CHANGED_HT; 1864 } 1865 1866 if (params->p2p_ctwindow >= 0) { 1867 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1868 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1869 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1870 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1871 changed |= BSS_CHANGED_P2P_PS; 1872 } 1873 1874 if (params->p2p_opp_ps > 0) { 1875 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1876 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1877 changed |= BSS_CHANGED_P2P_PS; 1878 } else if (params->p2p_opp_ps == 0) { 1879 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1880 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1881 changed |= BSS_CHANGED_P2P_PS; 1882 } 1883 1884 ieee80211_bss_info_change_notify(sdata, changed); 1885 1886 return 0; 1887 } 1888 1889 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1890 struct net_device *dev, 1891 struct ieee80211_txq_params *params) 1892 { 1893 struct ieee80211_local *local = wiphy_priv(wiphy); 1894 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1895 struct ieee80211_tx_queue_params p; 1896 1897 if (!local->ops->conf_tx) 1898 return -EOPNOTSUPP; 1899 1900 if (local->hw.queues < IEEE80211_NUM_ACS) 1901 return -EOPNOTSUPP; 1902 1903 memset(&p, 0, sizeof(p)); 1904 p.aifs = params->aifs; 1905 p.cw_max = params->cwmax; 1906 p.cw_min = params->cwmin; 1907 p.txop = params->txop; 1908 1909 /* 1910 * Setting tx queue params disables u-apsd because it's only 1911 * called in master mode. 1912 */ 1913 p.uapsd = false; 1914 1915 sdata->tx_conf[params->ac] = p; 1916 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1917 wiphy_debug(local->hw.wiphy, 1918 "failed to set TX queue parameters for AC %d\n", 1919 params->ac); 1920 return -EINVAL; 1921 } 1922 1923 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1924 1925 return 0; 1926 } 1927 1928 #ifdef CONFIG_PM 1929 static int ieee80211_suspend(struct wiphy *wiphy, 1930 struct cfg80211_wowlan *wowlan) 1931 { 1932 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1933 } 1934 1935 static int ieee80211_resume(struct wiphy *wiphy) 1936 { 1937 return __ieee80211_resume(wiphy_priv(wiphy)); 1938 } 1939 #else 1940 #define ieee80211_suspend NULL 1941 #define ieee80211_resume NULL 1942 #endif 1943 1944 static int ieee80211_scan(struct wiphy *wiphy, 1945 struct cfg80211_scan_request *req) 1946 { 1947 struct ieee80211_sub_if_data *sdata; 1948 1949 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1950 1951 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1952 case NL80211_IFTYPE_STATION: 1953 case NL80211_IFTYPE_ADHOC: 1954 case NL80211_IFTYPE_MESH_POINT: 1955 case NL80211_IFTYPE_P2P_CLIENT: 1956 case NL80211_IFTYPE_P2P_DEVICE: 1957 break; 1958 case NL80211_IFTYPE_P2P_GO: 1959 if (sdata->local->ops->hw_scan) 1960 break; 1961 /* 1962 * FIXME: implement NoA while scanning in software, 1963 * for now fall through to allow scanning only when 1964 * beaconing hasn't been configured yet 1965 */ 1966 case NL80211_IFTYPE_AP: 1967 /* 1968 * If the scan has been forced (and the driver supports 1969 * forcing), don't care about being beaconing already. 1970 * This will create problems to the attached stations (e.g. all 1971 * the frames sent while scanning on other channel will be 1972 * lost) 1973 */ 1974 if (sdata->u.ap.beacon && 1975 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 1976 !(req->flags & NL80211_SCAN_FLAG_AP))) 1977 return -EOPNOTSUPP; 1978 break; 1979 default: 1980 return -EOPNOTSUPP; 1981 } 1982 1983 return ieee80211_request_scan(sdata, req); 1984 } 1985 1986 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 1987 { 1988 ieee80211_scan_cancel(wiphy_priv(wiphy)); 1989 } 1990 1991 static int 1992 ieee80211_sched_scan_start(struct wiphy *wiphy, 1993 struct net_device *dev, 1994 struct cfg80211_sched_scan_request *req) 1995 { 1996 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1997 1998 if (!sdata->local->ops->sched_scan_start) 1999 return -EOPNOTSUPP; 2000 2001 return ieee80211_request_sched_scan_start(sdata, req); 2002 } 2003 2004 static int 2005 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2006 { 2007 struct ieee80211_local *local = wiphy_priv(wiphy); 2008 2009 if (!local->ops->sched_scan_stop) 2010 return -EOPNOTSUPP; 2011 2012 return ieee80211_request_sched_scan_stop(local); 2013 } 2014 2015 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2016 struct cfg80211_auth_request *req) 2017 { 2018 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2019 } 2020 2021 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2022 struct cfg80211_assoc_request *req) 2023 { 2024 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2025 } 2026 2027 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2028 struct cfg80211_deauth_request *req) 2029 { 2030 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2031 } 2032 2033 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2034 struct cfg80211_disassoc_request *req) 2035 { 2036 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2037 } 2038 2039 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2040 struct cfg80211_ibss_params *params) 2041 { 2042 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2043 } 2044 2045 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2046 { 2047 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2048 } 2049 2050 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2051 struct ocb_setup *setup) 2052 { 2053 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2054 } 2055 2056 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2057 { 2058 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2059 } 2060 2061 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2062 int rate[IEEE80211_NUM_BANDS]) 2063 { 2064 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2065 2066 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2067 sizeof(int) * IEEE80211_NUM_BANDS); 2068 2069 return 0; 2070 } 2071 2072 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2073 { 2074 struct ieee80211_local *local = wiphy_priv(wiphy); 2075 int err; 2076 2077 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2078 ieee80211_check_fast_xmit_all(local); 2079 2080 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2081 2082 if (err) { 2083 ieee80211_check_fast_xmit_all(local); 2084 return err; 2085 } 2086 } 2087 2088 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2089 (changed & WIPHY_PARAM_DYN_ACK)) { 2090 s16 coverage_class; 2091 2092 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2093 wiphy->coverage_class : -1; 2094 err = drv_set_coverage_class(local, coverage_class); 2095 2096 if (err) 2097 return err; 2098 } 2099 2100 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2101 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2102 2103 if (err) 2104 return err; 2105 } 2106 2107 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2108 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2109 return -EINVAL; 2110 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2111 } 2112 if (changed & WIPHY_PARAM_RETRY_LONG) { 2113 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2114 return -EINVAL; 2115 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2116 } 2117 if (changed & 2118 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2119 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2120 2121 return 0; 2122 } 2123 2124 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2125 struct wireless_dev *wdev, 2126 enum nl80211_tx_power_setting type, int mbm) 2127 { 2128 struct ieee80211_local *local = wiphy_priv(wiphy); 2129 struct ieee80211_sub_if_data *sdata; 2130 enum nl80211_tx_power_setting txp_type = type; 2131 bool update_txp_type = false; 2132 2133 if (wdev) { 2134 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2135 2136 switch (type) { 2137 case NL80211_TX_POWER_AUTOMATIC: 2138 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2139 txp_type = NL80211_TX_POWER_LIMITED; 2140 break; 2141 case NL80211_TX_POWER_LIMITED: 2142 case NL80211_TX_POWER_FIXED: 2143 if (mbm < 0 || (mbm % 100)) 2144 return -EOPNOTSUPP; 2145 sdata->user_power_level = MBM_TO_DBM(mbm); 2146 break; 2147 } 2148 2149 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2150 update_txp_type = true; 2151 sdata->vif.bss_conf.txpower_type = txp_type; 2152 } 2153 2154 ieee80211_recalc_txpower(sdata, update_txp_type); 2155 2156 return 0; 2157 } 2158 2159 switch (type) { 2160 case NL80211_TX_POWER_AUTOMATIC: 2161 local->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 local->user_power_level = MBM_TO_DBM(mbm); 2169 break; 2170 } 2171 2172 mutex_lock(&local->iflist_mtx); 2173 list_for_each_entry(sdata, &local->interfaces, list) { 2174 sdata->user_power_level = local->user_power_level; 2175 if (txp_type != sdata->vif.bss_conf.txpower_type) 2176 update_txp_type = true; 2177 sdata->vif.bss_conf.txpower_type = txp_type; 2178 } 2179 list_for_each_entry(sdata, &local->interfaces, list) 2180 ieee80211_recalc_txpower(sdata, update_txp_type); 2181 mutex_unlock(&local->iflist_mtx); 2182 2183 return 0; 2184 } 2185 2186 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2187 struct wireless_dev *wdev, 2188 int *dbm) 2189 { 2190 struct ieee80211_local *local = wiphy_priv(wiphy); 2191 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2192 2193 if (local->ops->get_txpower) 2194 return drv_get_txpower(local, sdata, dbm); 2195 2196 if (!local->use_chanctx) 2197 *dbm = local->hw.conf.power_level; 2198 else 2199 *dbm = sdata->vif.bss_conf.txpower; 2200 2201 return 0; 2202 } 2203 2204 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2205 const u8 *addr) 2206 { 2207 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2208 2209 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2210 2211 return 0; 2212 } 2213 2214 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2215 { 2216 struct ieee80211_local *local = wiphy_priv(wiphy); 2217 2218 drv_rfkill_poll(local); 2219 } 2220 2221 #ifdef CONFIG_NL80211_TESTMODE 2222 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2223 struct wireless_dev *wdev, 2224 void *data, int len) 2225 { 2226 struct ieee80211_local *local = wiphy_priv(wiphy); 2227 struct ieee80211_vif *vif = NULL; 2228 2229 if (!local->ops->testmode_cmd) 2230 return -EOPNOTSUPP; 2231 2232 if (wdev) { 2233 struct ieee80211_sub_if_data *sdata; 2234 2235 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2236 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2237 vif = &sdata->vif; 2238 } 2239 2240 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2241 } 2242 2243 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2244 struct sk_buff *skb, 2245 struct netlink_callback *cb, 2246 void *data, int len) 2247 { 2248 struct ieee80211_local *local = wiphy_priv(wiphy); 2249 2250 if (!local->ops->testmode_dump) 2251 return -EOPNOTSUPP; 2252 2253 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2254 } 2255 #endif 2256 2257 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2258 enum ieee80211_smps_mode smps_mode) 2259 { 2260 struct sta_info *sta; 2261 enum ieee80211_smps_mode old_req; 2262 2263 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2264 return -EINVAL; 2265 2266 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2267 return 0; 2268 2269 old_req = sdata->u.ap.req_smps; 2270 sdata->u.ap.req_smps = smps_mode; 2271 2272 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2273 if (old_req == smps_mode || 2274 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2275 return 0; 2276 2277 /* If no associated stations, there's no need to do anything */ 2278 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2279 sdata->smps_mode = smps_mode; 2280 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2281 return 0; 2282 } 2283 2284 ht_dbg(sdata, 2285 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2286 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2287 2288 mutex_lock(&sdata->local->sta_mtx); 2289 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2290 /* 2291 * Only stations associated to our AP and 2292 * associated VLANs 2293 */ 2294 if (sta->sdata->bss != &sdata->u.ap) 2295 continue; 2296 2297 /* This station doesn't support MIMO - skip it */ 2298 if (sta_info_tx_streams(sta) == 1) 2299 continue; 2300 2301 /* 2302 * Don't wake up a STA just to send the action frame 2303 * unless we are getting more restrictive. 2304 */ 2305 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2306 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2307 smps_mode)) { 2308 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2309 sta->sta.addr); 2310 continue; 2311 } 2312 2313 /* 2314 * If the STA is not authorized, wait until it gets 2315 * authorized and the action frame will be sent then. 2316 */ 2317 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2318 continue; 2319 2320 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2321 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2322 sdata->vif.bss_conf.bssid); 2323 } 2324 mutex_unlock(&sdata->local->sta_mtx); 2325 2326 sdata->smps_mode = smps_mode; 2327 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2328 2329 return 0; 2330 } 2331 2332 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2333 enum ieee80211_smps_mode smps_mode) 2334 { 2335 const u8 *ap; 2336 enum ieee80211_smps_mode old_req; 2337 int err; 2338 struct sta_info *sta; 2339 bool tdls_peer_found = false; 2340 2341 lockdep_assert_held(&sdata->wdev.mtx); 2342 2343 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2344 return -EINVAL; 2345 2346 old_req = sdata->u.mgd.req_smps; 2347 sdata->u.mgd.req_smps = smps_mode; 2348 2349 if (old_req == smps_mode && 2350 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2351 return 0; 2352 2353 /* 2354 * If not associated, or current association is not an HT 2355 * association, there's no need to do anything, just store 2356 * the new value until we associate. 2357 */ 2358 if (!sdata->u.mgd.associated || 2359 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2360 return 0; 2361 2362 ap = sdata->u.mgd.associated->bssid; 2363 2364 rcu_read_lock(); 2365 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2366 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2367 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2368 continue; 2369 2370 tdls_peer_found = true; 2371 break; 2372 } 2373 rcu_read_unlock(); 2374 2375 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2376 if (tdls_peer_found || !sdata->u.mgd.powersave) 2377 smps_mode = IEEE80211_SMPS_OFF; 2378 else 2379 smps_mode = IEEE80211_SMPS_DYNAMIC; 2380 } 2381 2382 /* send SM PS frame to AP */ 2383 err = ieee80211_send_smps_action(sdata, smps_mode, 2384 ap, ap); 2385 if (err) 2386 sdata->u.mgd.req_smps = old_req; 2387 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2388 ieee80211_teardown_tdls_peers(sdata); 2389 2390 return err; 2391 } 2392 2393 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2394 bool enabled, int timeout) 2395 { 2396 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2397 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2398 2399 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2400 return -EOPNOTSUPP; 2401 2402 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2403 return -EOPNOTSUPP; 2404 2405 if (enabled == sdata->u.mgd.powersave && 2406 timeout == local->dynamic_ps_forced_timeout) 2407 return 0; 2408 2409 sdata->u.mgd.powersave = enabled; 2410 local->dynamic_ps_forced_timeout = timeout; 2411 2412 /* no change, but if automatic follow powersave */ 2413 sdata_lock(sdata); 2414 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2415 sdata_unlock(sdata); 2416 2417 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2418 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2419 2420 ieee80211_recalc_ps(local); 2421 ieee80211_recalc_ps_vif(sdata); 2422 2423 return 0; 2424 } 2425 2426 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2427 struct net_device *dev, 2428 s32 rssi_thold, u32 rssi_hyst) 2429 { 2430 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2431 struct ieee80211_vif *vif = &sdata->vif; 2432 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2433 2434 if (rssi_thold == bss_conf->cqm_rssi_thold && 2435 rssi_hyst == bss_conf->cqm_rssi_hyst) 2436 return 0; 2437 2438 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2439 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2440 return -EOPNOTSUPP; 2441 2442 bss_conf->cqm_rssi_thold = rssi_thold; 2443 bss_conf->cqm_rssi_hyst = rssi_hyst; 2444 sdata->u.mgd.last_cqm_event_signal = 0; 2445 2446 /* tell the driver upon association, unless already associated */ 2447 if (sdata->u.mgd.associated && 2448 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2449 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2450 2451 return 0; 2452 } 2453 2454 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2455 struct net_device *dev, 2456 const u8 *addr, 2457 const struct cfg80211_bitrate_mask *mask) 2458 { 2459 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2460 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2461 int i, ret; 2462 2463 if (!ieee80211_sdata_running(sdata)) 2464 return -ENETDOWN; 2465 2466 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2467 ret = drv_set_bitrate_mask(local, sdata, mask); 2468 if (ret) 2469 return ret; 2470 } 2471 2472 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2473 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2474 int j; 2475 2476 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2477 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2478 sizeof(mask->control[i].ht_mcs)); 2479 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2480 mask->control[i].vht_mcs, 2481 sizeof(mask->control[i].vht_mcs)); 2482 2483 sdata->rc_has_mcs_mask[i] = false; 2484 sdata->rc_has_vht_mcs_mask[i] = false; 2485 if (!sband) 2486 continue; 2487 2488 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2489 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2490 sdata->rc_has_mcs_mask[i] = true; 2491 break; 2492 } 2493 } 2494 2495 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2496 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2497 sdata->rc_has_vht_mcs_mask[i] = true; 2498 break; 2499 } 2500 } 2501 } 2502 2503 return 0; 2504 } 2505 2506 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2507 struct net_device *dev, 2508 struct cfg80211_chan_def *chandef, 2509 u32 cac_time_ms) 2510 { 2511 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2512 struct ieee80211_local *local = sdata->local; 2513 int err; 2514 2515 mutex_lock(&local->mtx); 2516 if (!list_empty(&local->roc_list) || local->scanning) { 2517 err = -EBUSY; 2518 goto out_unlock; 2519 } 2520 2521 /* whatever, but channel contexts should not complain about that one */ 2522 sdata->smps_mode = IEEE80211_SMPS_OFF; 2523 sdata->needed_rx_chains = local->rx_chains; 2524 2525 err = ieee80211_vif_use_channel(sdata, chandef, 2526 IEEE80211_CHANCTX_SHARED); 2527 if (err) 2528 goto out_unlock; 2529 2530 ieee80211_queue_delayed_work(&sdata->local->hw, 2531 &sdata->dfs_cac_timer_work, 2532 msecs_to_jiffies(cac_time_ms)); 2533 2534 out_unlock: 2535 mutex_unlock(&local->mtx); 2536 return err; 2537 } 2538 2539 static struct cfg80211_beacon_data * 2540 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2541 { 2542 struct cfg80211_beacon_data *new_beacon; 2543 u8 *pos; 2544 int len; 2545 2546 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2547 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2548 beacon->probe_resp_len; 2549 2550 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2551 if (!new_beacon) 2552 return NULL; 2553 2554 pos = (u8 *)(new_beacon + 1); 2555 if (beacon->head_len) { 2556 new_beacon->head_len = beacon->head_len; 2557 new_beacon->head = pos; 2558 memcpy(pos, beacon->head, beacon->head_len); 2559 pos += beacon->head_len; 2560 } 2561 if (beacon->tail_len) { 2562 new_beacon->tail_len = beacon->tail_len; 2563 new_beacon->tail = pos; 2564 memcpy(pos, beacon->tail, beacon->tail_len); 2565 pos += beacon->tail_len; 2566 } 2567 if (beacon->beacon_ies_len) { 2568 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2569 new_beacon->beacon_ies = pos; 2570 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2571 pos += beacon->beacon_ies_len; 2572 } 2573 if (beacon->proberesp_ies_len) { 2574 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2575 new_beacon->proberesp_ies = pos; 2576 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2577 pos += beacon->proberesp_ies_len; 2578 } 2579 if (beacon->assocresp_ies_len) { 2580 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2581 new_beacon->assocresp_ies = pos; 2582 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2583 pos += beacon->assocresp_ies_len; 2584 } 2585 if (beacon->probe_resp_len) { 2586 new_beacon->probe_resp_len = beacon->probe_resp_len; 2587 beacon->probe_resp = pos; 2588 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2589 pos += beacon->probe_resp_len; 2590 } 2591 2592 return new_beacon; 2593 } 2594 2595 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2596 { 2597 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2598 2599 ieee80211_queue_work(&sdata->local->hw, 2600 &sdata->csa_finalize_work); 2601 } 2602 EXPORT_SYMBOL(ieee80211_csa_finish); 2603 2604 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2605 u32 *changed) 2606 { 2607 int err; 2608 2609 switch (sdata->vif.type) { 2610 case NL80211_IFTYPE_AP: 2611 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2612 NULL); 2613 kfree(sdata->u.ap.next_beacon); 2614 sdata->u.ap.next_beacon = NULL; 2615 2616 if (err < 0) 2617 return err; 2618 *changed |= err; 2619 break; 2620 case NL80211_IFTYPE_ADHOC: 2621 err = ieee80211_ibss_finish_csa(sdata); 2622 if (err < 0) 2623 return err; 2624 *changed |= err; 2625 break; 2626 #ifdef CONFIG_MAC80211_MESH 2627 case NL80211_IFTYPE_MESH_POINT: 2628 err = ieee80211_mesh_finish_csa(sdata); 2629 if (err < 0) 2630 return err; 2631 *changed |= err; 2632 break; 2633 #endif 2634 default: 2635 WARN_ON(1); 2636 return -EINVAL; 2637 } 2638 2639 return 0; 2640 } 2641 2642 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2643 { 2644 struct ieee80211_local *local = sdata->local; 2645 u32 changed = 0; 2646 int err; 2647 2648 sdata_assert_lock(sdata); 2649 lockdep_assert_held(&local->mtx); 2650 lockdep_assert_held(&local->chanctx_mtx); 2651 2652 /* 2653 * using reservation isn't immediate as it may be deferred until later 2654 * with multi-vif. once reservation is complete it will re-schedule the 2655 * work with no reserved_chanctx so verify chandef to check if it 2656 * completed successfully 2657 */ 2658 2659 if (sdata->reserved_chanctx) { 2660 /* 2661 * with multi-vif csa driver may call ieee80211_csa_finish() 2662 * many times while waiting for other interfaces to use their 2663 * reservations 2664 */ 2665 if (sdata->reserved_ready) 2666 return 0; 2667 2668 return ieee80211_vif_use_reserved_context(sdata); 2669 } 2670 2671 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2672 &sdata->csa_chandef)) 2673 return -EINVAL; 2674 2675 sdata->vif.csa_active = false; 2676 2677 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2678 if (err) 2679 return err; 2680 2681 ieee80211_bss_info_change_notify(sdata, changed); 2682 2683 if (sdata->csa_block_tx) { 2684 ieee80211_wake_vif_queues(local, sdata, 2685 IEEE80211_QUEUE_STOP_REASON_CSA); 2686 sdata->csa_block_tx = false; 2687 } 2688 2689 err = drv_post_channel_switch(sdata); 2690 if (err) 2691 return err; 2692 2693 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2694 2695 return 0; 2696 } 2697 2698 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2699 { 2700 if (__ieee80211_csa_finalize(sdata)) { 2701 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2702 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2703 GFP_KERNEL); 2704 } 2705 } 2706 2707 void ieee80211_csa_finalize_work(struct work_struct *work) 2708 { 2709 struct ieee80211_sub_if_data *sdata = 2710 container_of(work, struct ieee80211_sub_if_data, 2711 csa_finalize_work); 2712 struct ieee80211_local *local = sdata->local; 2713 2714 sdata_lock(sdata); 2715 mutex_lock(&local->mtx); 2716 mutex_lock(&local->chanctx_mtx); 2717 2718 /* AP might have been stopped while waiting for the lock. */ 2719 if (!sdata->vif.csa_active) 2720 goto unlock; 2721 2722 if (!ieee80211_sdata_running(sdata)) 2723 goto unlock; 2724 2725 ieee80211_csa_finalize(sdata); 2726 2727 unlock: 2728 mutex_unlock(&local->chanctx_mtx); 2729 mutex_unlock(&local->mtx); 2730 sdata_unlock(sdata); 2731 } 2732 2733 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 2734 struct cfg80211_csa_settings *params, 2735 u32 *changed) 2736 { 2737 struct ieee80211_csa_settings csa = {}; 2738 int err; 2739 2740 switch (sdata->vif.type) { 2741 case NL80211_IFTYPE_AP: 2742 sdata->u.ap.next_beacon = 2743 cfg80211_beacon_dup(¶ms->beacon_after); 2744 if (!sdata->u.ap.next_beacon) 2745 return -ENOMEM; 2746 2747 /* 2748 * With a count of 0, we don't have to wait for any 2749 * TBTT before switching, so complete the CSA 2750 * immediately. In theory, with a count == 1 we 2751 * should delay the switch until just before the next 2752 * TBTT, but that would complicate things so we switch 2753 * immediately too. If we would delay the switch 2754 * until the next TBTT, we would have to set the probe 2755 * response here. 2756 * 2757 * TODO: A channel switch with count <= 1 without 2758 * sending a CSA action frame is kind of useless, 2759 * because the clients won't know we're changing 2760 * channels. The action frame must be implemented 2761 * either here or in the userspace. 2762 */ 2763 if (params->count <= 1) 2764 break; 2765 2766 if ((params->n_counter_offsets_beacon > 2767 IEEE80211_MAX_CSA_COUNTERS_NUM) || 2768 (params->n_counter_offsets_presp > 2769 IEEE80211_MAX_CSA_COUNTERS_NUM)) 2770 return -EINVAL; 2771 2772 csa.counter_offsets_beacon = params->counter_offsets_beacon; 2773 csa.counter_offsets_presp = params->counter_offsets_presp; 2774 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 2775 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 2776 csa.count = params->count; 2777 2778 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 2779 if (err < 0) { 2780 kfree(sdata->u.ap.next_beacon); 2781 return err; 2782 } 2783 *changed |= err; 2784 2785 break; 2786 case NL80211_IFTYPE_ADHOC: 2787 if (!sdata->vif.bss_conf.ibss_joined) 2788 return -EINVAL; 2789 2790 if (params->chandef.width != sdata->u.ibss.chandef.width) 2791 return -EINVAL; 2792 2793 switch (params->chandef.width) { 2794 case NL80211_CHAN_WIDTH_40: 2795 if (cfg80211_get_chandef_type(¶ms->chandef) != 2796 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 2797 return -EINVAL; 2798 case NL80211_CHAN_WIDTH_5: 2799 case NL80211_CHAN_WIDTH_10: 2800 case NL80211_CHAN_WIDTH_20_NOHT: 2801 case NL80211_CHAN_WIDTH_20: 2802 break; 2803 default: 2804 return -EINVAL; 2805 } 2806 2807 /* changes into another band are not supported */ 2808 if (sdata->u.ibss.chandef.chan->band != 2809 params->chandef.chan->band) 2810 return -EINVAL; 2811 2812 /* see comments in the NL80211_IFTYPE_AP block */ 2813 if (params->count > 1) { 2814 err = ieee80211_ibss_csa_beacon(sdata, params); 2815 if (err < 0) 2816 return err; 2817 *changed |= err; 2818 } 2819 2820 ieee80211_send_action_csa(sdata, params); 2821 2822 break; 2823 #ifdef CONFIG_MAC80211_MESH 2824 case NL80211_IFTYPE_MESH_POINT: { 2825 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2826 2827 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 2828 return -EINVAL; 2829 2830 /* changes into another band are not supported */ 2831 if (sdata->vif.bss_conf.chandef.chan->band != 2832 params->chandef.chan->band) 2833 return -EINVAL; 2834 2835 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 2836 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 2837 if (!ifmsh->pre_value) 2838 ifmsh->pre_value = 1; 2839 else 2840 ifmsh->pre_value++; 2841 } 2842 2843 /* see comments in the NL80211_IFTYPE_AP block */ 2844 if (params->count > 1) { 2845 err = ieee80211_mesh_csa_beacon(sdata, params); 2846 if (err < 0) { 2847 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 2848 return err; 2849 } 2850 *changed |= err; 2851 } 2852 2853 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 2854 ieee80211_send_action_csa(sdata, params); 2855 2856 break; 2857 } 2858 #endif 2859 default: 2860 return -EOPNOTSUPP; 2861 } 2862 2863 return 0; 2864 } 2865 2866 static int 2867 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2868 struct cfg80211_csa_settings *params) 2869 { 2870 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2871 struct ieee80211_local *local = sdata->local; 2872 struct ieee80211_channel_switch ch_switch; 2873 struct ieee80211_chanctx_conf *conf; 2874 struct ieee80211_chanctx *chanctx; 2875 u32 changed = 0; 2876 int err; 2877 2878 sdata_assert_lock(sdata); 2879 lockdep_assert_held(&local->mtx); 2880 2881 if (!list_empty(&local->roc_list) || local->scanning) 2882 return -EBUSY; 2883 2884 if (sdata->wdev.cac_started) 2885 return -EBUSY; 2886 2887 if (cfg80211_chandef_identical(¶ms->chandef, 2888 &sdata->vif.bss_conf.chandef)) 2889 return -EINVAL; 2890 2891 /* don't allow another channel switch if one is already active. */ 2892 if (sdata->vif.csa_active) 2893 return -EBUSY; 2894 2895 mutex_lock(&local->chanctx_mtx); 2896 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2897 lockdep_is_held(&local->chanctx_mtx)); 2898 if (!conf) { 2899 err = -EBUSY; 2900 goto out; 2901 } 2902 2903 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2904 if (!chanctx) { 2905 err = -EBUSY; 2906 goto out; 2907 } 2908 2909 ch_switch.timestamp = 0; 2910 ch_switch.device_timestamp = 0; 2911 ch_switch.block_tx = params->block_tx; 2912 ch_switch.chandef = params->chandef; 2913 ch_switch.count = params->count; 2914 2915 err = drv_pre_channel_switch(sdata, &ch_switch); 2916 if (err) 2917 goto out; 2918 2919 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 2920 chanctx->mode, 2921 params->radar_required); 2922 if (err) 2923 goto out; 2924 2925 /* if reservation is invalid then this will fail */ 2926 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 2927 if (err) { 2928 ieee80211_vif_unreserve_chanctx(sdata); 2929 goto out; 2930 } 2931 2932 err = ieee80211_set_csa_beacon(sdata, params, &changed); 2933 if (err) { 2934 ieee80211_vif_unreserve_chanctx(sdata); 2935 goto out; 2936 } 2937 2938 sdata->csa_chandef = params->chandef; 2939 sdata->csa_block_tx = params->block_tx; 2940 sdata->vif.csa_active = true; 2941 2942 if (sdata->csa_block_tx) 2943 ieee80211_stop_vif_queues(local, sdata, 2944 IEEE80211_QUEUE_STOP_REASON_CSA); 2945 2946 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 2947 params->count); 2948 2949 if (changed) { 2950 ieee80211_bss_info_change_notify(sdata, changed); 2951 drv_channel_switch_beacon(sdata, ¶ms->chandef); 2952 } else { 2953 /* if the beacon didn't change, we can finalize immediately */ 2954 ieee80211_csa_finalize(sdata); 2955 } 2956 2957 out: 2958 mutex_unlock(&local->chanctx_mtx); 2959 return err; 2960 } 2961 2962 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2963 struct cfg80211_csa_settings *params) 2964 { 2965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2966 struct ieee80211_local *local = sdata->local; 2967 int err; 2968 2969 mutex_lock(&local->mtx); 2970 err = __ieee80211_channel_switch(wiphy, dev, params); 2971 mutex_unlock(&local->mtx); 2972 2973 return err; 2974 } 2975 2976 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 2977 { 2978 lockdep_assert_held(&local->mtx); 2979 2980 local->roc_cookie_counter++; 2981 2982 /* wow, you wrapped 64 bits ... more likely a bug */ 2983 if (WARN_ON(local->roc_cookie_counter == 0)) 2984 local->roc_cookie_counter++; 2985 2986 return local->roc_cookie_counter; 2987 } 2988 2989 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 2990 u64 *cookie, gfp_t gfp) 2991 { 2992 unsigned long spin_flags; 2993 struct sk_buff *ack_skb; 2994 int id; 2995 2996 ack_skb = skb_copy(skb, gfp); 2997 if (!ack_skb) 2998 return -ENOMEM; 2999 3000 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3001 id = idr_alloc(&local->ack_status_frames, ack_skb, 3002 1, 0x10000, GFP_ATOMIC); 3003 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3004 3005 if (id < 0) { 3006 kfree_skb(ack_skb); 3007 return -ENOMEM; 3008 } 3009 3010 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3011 3012 *cookie = ieee80211_mgmt_tx_cookie(local); 3013 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3014 3015 return 0; 3016 } 3017 3018 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3019 struct wireless_dev *wdev, 3020 u16 frame_type, bool reg) 3021 { 3022 struct ieee80211_local *local = wiphy_priv(wiphy); 3023 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3024 3025 switch (frame_type) { 3026 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3027 if (reg) { 3028 local->probe_req_reg++; 3029 sdata->vif.probe_req_reg++; 3030 } else { 3031 if (local->probe_req_reg) 3032 local->probe_req_reg--; 3033 3034 if (sdata->vif.probe_req_reg) 3035 sdata->vif.probe_req_reg--; 3036 } 3037 3038 if (!local->open_count) 3039 break; 3040 3041 if (sdata->vif.probe_req_reg == 1) 3042 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3043 FIF_PROBE_REQ); 3044 else if (sdata->vif.probe_req_reg == 0) 3045 drv_config_iface_filter(local, sdata, 0, 3046 FIF_PROBE_REQ); 3047 3048 ieee80211_configure_filter(local); 3049 break; 3050 default: 3051 break; 3052 } 3053 } 3054 3055 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3056 { 3057 struct ieee80211_local *local = wiphy_priv(wiphy); 3058 3059 if (local->started) 3060 return -EOPNOTSUPP; 3061 3062 return drv_set_antenna(local, tx_ant, rx_ant); 3063 } 3064 3065 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3066 { 3067 struct ieee80211_local *local = wiphy_priv(wiphy); 3068 3069 return drv_get_antenna(local, tx_ant, rx_ant); 3070 } 3071 3072 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3073 struct net_device *dev, 3074 struct cfg80211_gtk_rekey_data *data) 3075 { 3076 struct ieee80211_local *local = wiphy_priv(wiphy); 3077 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3078 3079 if (!local->ops->set_rekey_data) 3080 return -EOPNOTSUPP; 3081 3082 drv_set_rekey_data(local, sdata, data); 3083 3084 return 0; 3085 } 3086 3087 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3088 const u8 *peer, u64 *cookie) 3089 { 3090 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3091 struct ieee80211_local *local = sdata->local; 3092 struct ieee80211_qos_hdr *nullfunc; 3093 struct sk_buff *skb; 3094 int size = sizeof(*nullfunc); 3095 __le16 fc; 3096 bool qos; 3097 struct ieee80211_tx_info *info; 3098 struct sta_info *sta; 3099 struct ieee80211_chanctx_conf *chanctx_conf; 3100 enum ieee80211_band band; 3101 int ret; 3102 3103 /* the lock is needed to assign the cookie later */ 3104 mutex_lock(&local->mtx); 3105 3106 rcu_read_lock(); 3107 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3108 if (WARN_ON(!chanctx_conf)) { 3109 ret = -EINVAL; 3110 goto unlock; 3111 } 3112 band = chanctx_conf->def.chan->band; 3113 sta = sta_info_get_bss(sdata, peer); 3114 if (sta) { 3115 qos = sta->sta.wme; 3116 } else { 3117 ret = -ENOLINK; 3118 goto unlock; 3119 } 3120 3121 if (qos) { 3122 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3123 IEEE80211_STYPE_QOS_NULLFUNC | 3124 IEEE80211_FCTL_FROMDS); 3125 } else { 3126 size -= 2; 3127 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3128 IEEE80211_STYPE_NULLFUNC | 3129 IEEE80211_FCTL_FROMDS); 3130 } 3131 3132 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3133 if (!skb) { 3134 ret = -ENOMEM; 3135 goto unlock; 3136 } 3137 3138 skb->dev = dev; 3139 3140 skb_reserve(skb, local->hw.extra_tx_headroom); 3141 3142 nullfunc = (void *) skb_put(skb, size); 3143 nullfunc->frame_control = fc; 3144 nullfunc->duration_id = 0; 3145 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3146 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3147 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3148 nullfunc->seq_ctrl = 0; 3149 3150 info = IEEE80211_SKB_CB(skb); 3151 3152 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3153 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3154 info->band = band; 3155 3156 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3157 skb->priority = 7; 3158 if (qos) 3159 nullfunc->qos_ctrl = cpu_to_le16(7); 3160 3161 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3162 if (ret) { 3163 kfree_skb(skb); 3164 goto unlock; 3165 } 3166 3167 local_bh_disable(); 3168 ieee80211_xmit(sdata, sta, skb); 3169 local_bh_enable(); 3170 3171 ret = 0; 3172 unlock: 3173 rcu_read_unlock(); 3174 mutex_unlock(&local->mtx); 3175 3176 return ret; 3177 } 3178 3179 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3180 struct wireless_dev *wdev, 3181 struct cfg80211_chan_def *chandef) 3182 { 3183 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3184 struct ieee80211_local *local = wiphy_priv(wiphy); 3185 struct ieee80211_chanctx_conf *chanctx_conf; 3186 int ret = -ENODATA; 3187 3188 rcu_read_lock(); 3189 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3190 if (chanctx_conf) { 3191 *chandef = sdata->vif.bss_conf.chandef; 3192 ret = 0; 3193 } else if (local->open_count > 0 && 3194 local->open_count == local->monitors && 3195 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3196 if (local->use_chanctx) 3197 *chandef = local->monitor_chandef; 3198 else 3199 *chandef = local->_oper_chandef; 3200 ret = 0; 3201 } 3202 rcu_read_unlock(); 3203 3204 return ret; 3205 } 3206 3207 #ifdef CONFIG_PM 3208 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3209 { 3210 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3211 } 3212 #endif 3213 3214 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3215 struct net_device *dev, 3216 struct cfg80211_qos_map *qos_map) 3217 { 3218 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3219 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3220 3221 if (qos_map) { 3222 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3223 if (!new_qos_map) 3224 return -ENOMEM; 3225 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3226 } else { 3227 /* A NULL qos_map was passed to disable QoS mapping */ 3228 new_qos_map = NULL; 3229 } 3230 3231 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3232 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3233 if (old_qos_map) 3234 kfree_rcu(old_qos_map, rcu_head); 3235 3236 return 0; 3237 } 3238 3239 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3240 struct net_device *dev, 3241 struct cfg80211_chan_def *chandef) 3242 { 3243 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3244 int ret; 3245 u32 changed = 0; 3246 3247 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3248 if (ret == 0) 3249 ieee80211_bss_info_change_notify(sdata, changed); 3250 3251 return ret; 3252 } 3253 3254 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3255 u8 tsid, const u8 *peer, u8 up, 3256 u16 admitted_time) 3257 { 3258 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3259 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3260 int ac = ieee802_1d_to_ac[up]; 3261 3262 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3263 return -EOPNOTSUPP; 3264 3265 if (!(sdata->wmm_acm & BIT(up))) 3266 return -EINVAL; 3267 3268 if (ifmgd->tx_tspec[ac].admitted_time) 3269 return -EBUSY; 3270 3271 if (admitted_time) { 3272 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3273 ifmgd->tx_tspec[ac].tsid = tsid; 3274 ifmgd->tx_tspec[ac].up = up; 3275 } 3276 3277 return 0; 3278 } 3279 3280 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3281 u8 tsid, const u8 *peer) 3282 { 3283 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3284 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3285 struct ieee80211_local *local = wiphy_priv(wiphy); 3286 int ac; 3287 3288 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3289 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3290 3291 /* skip unused entries */ 3292 if (!tx_tspec->admitted_time) 3293 continue; 3294 3295 if (tx_tspec->tsid != tsid) 3296 continue; 3297 3298 /* due to this new packets will be reassigned to non-ACM ACs */ 3299 tx_tspec->up = -1; 3300 3301 /* Make sure that all packets have been sent to avoid to 3302 * restore the QoS params on packets that are still on the 3303 * queues. 3304 */ 3305 synchronize_net(); 3306 ieee80211_flush_queues(local, sdata, false); 3307 3308 /* restore the normal QoS parameters 3309 * (unconditionally to avoid races) 3310 */ 3311 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3312 tx_tspec->downgraded = false; 3313 ieee80211_sta_handle_tspec_ac_params(sdata); 3314 3315 /* finally clear all the data */ 3316 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3317 3318 return 0; 3319 } 3320 3321 return -ENOENT; 3322 } 3323 3324 const struct cfg80211_ops mac80211_config_ops = { 3325 .add_virtual_intf = ieee80211_add_iface, 3326 .del_virtual_intf = ieee80211_del_iface, 3327 .change_virtual_intf = ieee80211_change_iface, 3328 .start_p2p_device = ieee80211_start_p2p_device, 3329 .stop_p2p_device = ieee80211_stop_p2p_device, 3330 .add_key = ieee80211_add_key, 3331 .del_key = ieee80211_del_key, 3332 .get_key = ieee80211_get_key, 3333 .set_default_key = ieee80211_config_default_key, 3334 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3335 .start_ap = ieee80211_start_ap, 3336 .change_beacon = ieee80211_change_beacon, 3337 .stop_ap = ieee80211_stop_ap, 3338 .add_station = ieee80211_add_station, 3339 .del_station = ieee80211_del_station, 3340 .change_station = ieee80211_change_station, 3341 .get_station = ieee80211_get_station, 3342 .dump_station = ieee80211_dump_station, 3343 .dump_survey = ieee80211_dump_survey, 3344 #ifdef CONFIG_MAC80211_MESH 3345 .add_mpath = ieee80211_add_mpath, 3346 .del_mpath = ieee80211_del_mpath, 3347 .change_mpath = ieee80211_change_mpath, 3348 .get_mpath = ieee80211_get_mpath, 3349 .dump_mpath = ieee80211_dump_mpath, 3350 .get_mpp = ieee80211_get_mpp, 3351 .dump_mpp = ieee80211_dump_mpp, 3352 .update_mesh_config = ieee80211_update_mesh_config, 3353 .get_mesh_config = ieee80211_get_mesh_config, 3354 .join_mesh = ieee80211_join_mesh, 3355 .leave_mesh = ieee80211_leave_mesh, 3356 #endif 3357 .join_ocb = ieee80211_join_ocb, 3358 .leave_ocb = ieee80211_leave_ocb, 3359 .change_bss = ieee80211_change_bss, 3360 .set_txq_params = ieee80211_set_txq_params, 3361 .set_monitor_channel = ieee80211_set_monitor_channel, 3362 .suspend = ieee80211_suspend, 3363 .resume = ieee80211_resume, 3364 .scan = ieee80211_scan, 3365 .abort_scan = ieee80211_abort_scan, 3366 .sched_scan_start = ieee80211_sched_scan_start, 3367 .sched_scan_stop = ieee80211_sched_scan_stop, 3368 .auth = ieee80211_auth, 3369 .assoc = ieee80211_assoc, 3370 .deauth = ieee80211_deauth, 3371 .disassoc = ieee80211_disassoc, 3372 .join_ibss = ieee80211_join_ibss, 3373 .leave_ibss = ieee80211_leave_ibss, 3374 .set_mcast_rate = ieee80211_set_mcast_rate, 3375 .set_wiphy_params = ieee80211_set_wiphy_params, 3376 .set_tx_power = ieee80211_set_tx_power, 3377 .get_tx_power = ieee80211_get_tx_power, 3378 .set_wds_peer = ieee80211_set_wds_peer, 3379 .rfkill_poll = ieee80211_rfkill_poll, 3380 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3381 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3382 .set_power_mgmt = ieee80211_set_power_mgmt, 3383 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3384 .remain_on_channel = ieee80211_remain_on_channel, 3385 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3386 .mgmt_tx = ieee80211_mgmt_tx, 3387 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3388 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3389 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3390 .set_antenna = ieee80211_set_antenna, 3391 .get_antenna = ieee80211_get_antenna, 3392 .set_rekey_data = ieee80211_set_rekey_data, 3393 .tdls_oper = ieee80211_tdls_oper, 3394 .tdls_mgmt = ieee80211_tdls_mgmt, 3395 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3396 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3397 .probe_client = ieee80211_probe_client, 3398 .set_noack_map = ieee80211_set_noack_map, 3399 #ifdef CONFIG_PM 3400 .set_wakeup = ieee80211_set_wakeup, 3401 #endif 3402 .get_channel = ieee80211_cfg_get_channel, 3403 .start_radar_detection = ieee80211_start_radar_detection, 3404 .channel_switch = ieee80211_channel_switch, 3405 .set_qos_map = ieee80211_set_qos_map, 3406 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3407 .add_tx_ts = ieee80211_add_tx_ts, 3408 .del_tx_ts = ieee80211_del_tx_ts, 3409 }; 3410