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 pn64 = atomic64_read(&key->conf.tx_pn); 343 iv32 = TKIP_PN_TO_IV32(pn64); 344 iv16 = TKIP_PN_TO_IV16(pn64); 345 346 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 347 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 348 drv_get_key_seq(sdata->local, key, &kseq); 349 iv32 = kseq.tkip.iv32; 350 iv16 = kseq.tkip.iv16; 351 } 352 353 seq[0] = iv16 & 0xff; 354 seq[1] = (iv16 >> 8) & 0xff; 355 seq[2] = iv32 & 0xff; 356 seq[3] = (iv32 >> 8) & 0xff; 357 seq[4] = (iv32 >> 16) & 0xff; 358 seq[5] = (iv32 >> 24) & 0xff; 359 params.seq = seq; 360 params.seq_len = 6; 361 break; 362 case WLAN_CIPHER_SUITE_CCMP: 363 case WLAN_CIPHER_SUITE_CCMP_256: 364 case WLAN_CIPHER_SUITE_AES_CMAC: 365 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 366 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 367 offsetof(typeof(kseq), aes_cmac)); 368 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 369 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 370 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 371 offsetof(typeof(kseq), aes_gmac)); 372 case WLAN_CIPHER_SUITE_GCMP: 373 case WLAN_CIPHER_SUITE_GCMP_256: 374 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 375 offsetof(typeof(kseq), gcmp)); 376 377 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 378 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 379 drv_get_key_seq(sdata->local, key, &kseq); 380 memcpy(seq, kseq.ccmp.pn, 6); 381 } else { 382 pn64 = atomic64_read(&key->conf.tx_pn); 383 seq[0] = pn64; 384 seq[1] = pn64 >> 8; 385 seq[2] = pn64 >> 16; 386 seq[3] = pn64 >> 24; 387 seq[4] = pn64 >> 32; 388 seq[5] = pn64 >> 40; 389 } 390 params.seq = seq; 391 params.seq_len = 6; 392 break; 393 default: 394 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 395 break; 396 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 397 break; 398 drv_get_key_seq(sdata->local, key, &kseq); 399 params.seq = kseq.hw.seq; 400 params.seq_len = kseq.hw.seq_len; 401 break; 402 } 403 404 params.key = key->conf.key; 405 params.key_len = key->conf.keylen; 406 407 callback(cookie, ¶ms); 408 err = 0; 409 410 out: 411 rcu_read_unlock(); 412 return err; 413 } 414 415 static int ieee80211_config_default_key(struct wiphy *wiphy, 416 struct net_device *dev, 417 u8 key_idx, bool uni, 418 bool multi) 419 { 420 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 421 422 ieee80211_set_default_key(sdata, key_idx, uni, multi); 423 424 return 0; 425 } 426 427 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 428 struct net_device *dev, 429 u8 key_idx) 430 { 431 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 432 433 ieee80211_set_default_mgmt_key(sdata, key_idx); 434 435 return 0; 436 } 437 438 void sta_set_rate_info_tx(struct sta_info *sta, 439 const struct ieee80211_tx_rate *rate, 440 struct rate_info *rinfo) 441 { 442 rinfo->flags = 0; 443 if (rate->flags & IEEE80211_TX_RC_MCS) { 444 rinfo->flags |= RATE_INFO_FLAGS_MCS; 445 rinfo->mcs = rate->idx; 446 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 447 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 448 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 449 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 450 } else { 451 struct ieee80211_supported_band *sband; 452 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 453 u16 brate; 454 455 sband = sta->local->hw.wiphy->bands[ 456 ieee80211_get_sdata_band(sta->sdata)]; 457 brate = sband->bitrates[rate->idx].bitrate; 458 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 459 } 460 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 461 rinfo->bw = RATE_INFO_BW_40; 462 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 463 rinfo->bw = RATE_INFO_BW_80; 464 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 465 rinfo->bw = RATE_INFO_BW_160; 466 else 467 rinfo->bw = RATE_INFO_BW_20; 468 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 469 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 470 } 471 472 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 473 int idx, u8 *mac, struct station_info *sinfo) 474 { 475 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 476 struct ieee80211_local *local = sdata->local; 477 struct sta_info *sta; 478 int ret = -ENOENT; 479 480 mutex_lock(&local->sta_mtx); 481 482 sta = sta_info_get_by_idx(sdata, idx); 483 if (sta) { 484 ret = 0; 485 memcpy(mac, sta->sta.addr, ETH_ALEN); 486 sta_set_sinfo(sta, sinfo); 487 } 488 489 mutex_unlock(&local->sta_mtx); 490 491 return ret; 492 } 493 494 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 495 int idx, struct survey_info *survey) 496 { 497 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 498 499 return drv_get_survey(local, idx, survey); 500 } 501 502 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 503 const u8 *mac, struct station_info *sinfo) 504 { 505 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 506 struct ieee80211_local *local = sdata->local; 507 struct sta_info *sta; 508 int ret = -ENOENT; 509 510 mutex_lock(&local->sta_mtx); 511 512 sta = sta_info_get_bss(sdata, mac); 513 if (sta) { 514 ret = 0; 515 sta_set_sinfo(sta, sinfo); 516 } 517 518 mutex_unlock(&local->sta_mtx); 519 520 return ret; 521 } 522 523 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 524 struct cfg80211_chan_def *chandef) 525 { 526 struct ieee80211_local *local = wiphy_priv(wiphy); 527 struct ieee80211_sub_if_data *sdata; 528 int ret = 0; 529 530 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 531 return 0; 532 533 mutex_lock(&local->mtx); 534 mutex_lock(&local->iflist_mtx); 535 if (local->use_chanctx) { 536 sdata = rcu_dereference_protected( 537 local->monitor_sdata, 538 lockdep_is_held(&local->iflist_mtx)); 539 if (sdata) { 540 ieee80211_vif_release_channel(sdata); 541 ret = ieee80211_vif_use_channel(sdata, chandef, 542 IEEE80211_CHANCTX_EXCLUSIVE); 543 } 544 } else if (local->open_count == local->monitors) { 545 local->_oper_chandef = *chandef; 546 ieee80211_hw_config(local, 0); 547 } 548 549 if (ret == 0) 550 local->monitor_chandef = *chandef; 551 mutex_unlock(&local->iflist_mtx); 552 mutex_unlock(&local->mtx); 553 554 return ret; 555 } 556 557 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 558 const u8 *resp, size_t resp_len, 559 const struct ieee80211_csa_settings *csa) 560 { 561 struct probe_resp *new, *old; 562 563 if (!resp || !resp_len) 564 return 1; 565 566 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 567 568 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 569 if (!new) 570 return -ENOMEM; 571 572 new->len = resp_len; 573 memcpy(new->data, resp, resp_len); 574 575 if (csa) 576 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, 577 csa->n_counter_offsets_presp * 578 sizeof(new->csa_counter_offsets[0])); 579 580 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 581 if (old) 582 kfree_rcu(old, rcu_head); 583 584 return 0; 585 } 586 587 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 588 struct cfg80211_beacon_data *params, 589 const struct ieee80211_csa_settings *csa) 590 { 591 struct beacon_data *new, *old; 592 int new_head_len, new_tail_len; 593 int size, err; 594 u32 changed = BSS_CHANGED_BEACON; 595 596 old = sdata_dereference(sdata->u.ap.beacon, sdata); 597 598 599 /* Need to have a beacon head if we don't have one yet */ 600 if (!params->head && !old) 601 return -EINVAL; 602 603 /* new or old head? */ 604 if (params->head) 605 new_head_len = params->head_len; 606 else 607 new_head_len = old->head_len; 608 609 /* new or old tail? */ 610 if (params->tail || !old) 611 /* params->tail_len will be zero for !params->tail */ 612 new_tail_len = params->tail_len; 613 else 614 new_tail_len = old->tail_len; 615 616 size = sizeof(*new) + new_head_len + new_tail_len; 617 618 new = kzalloc(size, GFP_KERNEL); 619 if (!new) 620 return -ENOMEM; 621 622 /* start filling the new info now */ 623 624 /* 625 * pointers go into the block we allocated, 626 * memory is | beacon_data | head | tail | 627 */ 628 new->head = ((u8 *) new) + sizeof(*new); 629 new->tail = new->head + new_head_len; 630 new->head_len = new_head_len; 631 new->tail_len = new_tail_len; 632 633 if (csa) { 634 new->csa_current_counter = csa->count; 635 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, 636 csa->n_counter_offsets_beacon * 637 sizeof(new->csa_counter_offsets[0])); 638 } 639 640 /* copy in head */ 641 if (params->head) 642 memcpy(new->head, params->head, new_head_len); 643 else 644 memcpy(new->head, old->head, new_head_len); 645 646 /* copy in optional tail */ 647 if (params->tail) 648 memcpy(new->tail, params->tail, new_tail_len); 649 else 650 if (old) 651 memcpy(new->tail, old->tail, new_tail_len); 652 653 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 654 params->probe_resp_len, csa); 655 if (err < 0) 656 return err; 657 if (err == 0) 658 changed |= BSS_CHANGED_AP_PROBE_RESP; 659 660 rcu_assign_pointer(sdata->u.ap.beacon, new); 661 662 if (old) 663 kfree_rcu(old, rcu_head); 664 665 return changed; 666 } 667 668 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 669 struct cfg80211_ap_settings *params) 670 { 671 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 672 struct ieee80211_local *local = sdata->local; 673 struct beacon_data *old; 674 struct ieee80211_sub_if_data *vlan; 675 u32 changed = BSS_CHANGED_BEACON_INT | 676 BSS_CHANGED_BEACON_ENABLED | 677 BSS_CHANGED_BEACON | 678 BSS_CHANGED_SSID | 679 BSS_CHANGED_P2P_PS | 680 BSS_CHANGED_TXPOWER; 681 int err; 682 683 old = sdata_dereference(sdata->u.ap.beacon, sdata); 684 if (old) 685 return -EALREADY; 686 687 switch (params->smps_mode) { 688 case NL80211_SMPS_OFF: 689 sdata->smps_mode = IEEE80211_SMPS_OFF; 690 break; 691 case NL80211_SMPS_STATIC: 692 sdata->smps_mode = IEEE80211_SMPS_STATIC; 693 break; 694 case NL80211_SMPS_DYNAMIC: 695 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; 696 break; 697 default: 698 return -EINVAL; 699 } 700 sdata->needed_rx_chains = sdata->local->rx_chains; 701 702 mutex_lock(&local->mtx); 703 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 704 IEEE80211_CHANCTX_SHARED); 705 if (!err) 706 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 707 mutex_unlock(&local->mtx); 708 if (err) 709 return err; 710 711 /* 712 * Apply control port protocol, this allows us to 713 * not encrypt dynamic WEP control frames. 714 */ 715 sdata->control_port_protocol = params->crypto.control_port_ethertype; 716 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 717 sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, 718 ¶ms->crypto, 719 sdata->vif.type); 720 721 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 722 vlan->control_port_protocol = 723 params->crypto.control_port_ethertype; 724 vlan->control_port_no_encrypt = 725 params->crypto.control_port_no_encrypt; 726 vlan->encrypt_headroom = 727 ieee80211_cs_headroom(sdata->local, 728 ¶ms->crypto, 729 vlan->vif.type); 730 } 731 732 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 733 sdata->vif.bss_conf.dtim_period = params->dtim_period; 734 sdata->vif.bss_conf.enable_beacon = true; 735 736 sdata->vif.bss_conf.ssid_len = params->ssid_len; 737 if (params->ssid_len) 738 memcpy(sdata->vif.bss_conf.ssid, params->ssid, 739 params->ssid_len); 740 sdata->vif.bss_conf.hidden_ssid = 741 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 742 743 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 744 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 745 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 746 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 747 if (params->p2p_opp_ps) 748 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 749 IEEE80211_P2P_OPPPS_ENABLE_BIT; 750 751 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); 752 if (err < 0) { 753 ieee80211_vif_release_channel(sdata); 754 return err; 755 } 756 changed |= err; 757 758 err = drv_start_ap(sdata->local, sdata); 759 if (err) { 760 old = sdata_dereference(sdata->u.ap.beacon, sdata); 761 762 if (old) 763 kfree_rcu(old, rcu_head); 764 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 765 ieee80211_vif_release_channel(sdata); 766 return err; 767 } 768 769 ieee80211_recalc_dtim(local, sdata); 770 ieee80211_bss_info_change_notify(sdata, changed); 771 772 netif_carrier_on(dev); 773 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 774 netif_carrier_on(vlan->dev); 775 776 return 0; 777 } 778 779 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 780 struct cfg80211_beacon_data *params) 781 { 782 struct ieee80211_sub_if_data *sdata; 783 struct beacon_data *old; 784 int err; 785 786 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 787 sdata_assert_lock(sdata); 788 789 /* don't allow changing the beacon while CSA is in place - offset 790 * of channel switch counter may change 791 */ 792 if (sdata->vif.csa_active) 793 return -EBUSY; 794 795 old = sdata_dereference(sdata->u.ap.beacon, sdata); 796 if (!old) 797 return -ENOENT; 798 799 err = ieee80211_assign_beacon(sdata, params, NULL); 800 if (err < 0) 801 return err; 802 ieee80211_bss_info_change_notify(sdata, err); 803 return 0; 804 } 805 806 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) 807 { 808 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 809 struct ieee80211_sub_if_data *vlan; 810 struct ieee80211_local *local = sdata->local; 811 struct beacon_data *old_beacon; 812 struct probe_resp *old_probe_resp; 813 struct cfg80211_chan_def chandef; 814 815 sdata_assert_lock(sdata); 816 817 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 818 if (!old_beacon) 819 return -ENOENT; 820 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 821 822 /* abort any running channel switch */ 823 mutex_lock(&local->mtx); 824 sdata->vif.csa_active = false; 825 if (sdata->csa_block_tx) { 826 ieee80211_wake_vif_queues(local, sdata, 827 IEEE80211_QUEUE_STOP_REASON_CSA); 828 sdata->csa_block_tx = false; 829 } 830 831 mutex_unlock(&local->mtx); 832 833 kfree(sdata->u.ap.next_beacon); 834 sdata->u.ap.next_beacon = NULL; 835 836 /* turn off carrier for this interface and dependent VLANs */ 837 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 838 netif_carrier_off(vlan->dev); 839 netif_carrier_off(dev); 840 841 /* remove beacon and probe response */ 842 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 843 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 844 kfree_rcu(old_beacon, rcu_head); 845 if (old_probe_resp) 846 kfree_rcu(old_probe_resp, rcu_head); 847 sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; 848 849 __sta_info_flush(sdata, true); 850 ieee80211_free_keys(sdata, true); 851 852 sdata->vif.bss_conf.enable_beacon = false; 853 sdata->vif.bss_conf.ssid_len = 0; 854 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 855 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 856 857 if (sdata->wdev.cac_started) { 858 chandef = sdata->vif.bss_conf.chandef; 859 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 860 cfg80211_cac_event(sdata->dev, &chandef, 861 NL80211_RADAR_CAC_ABORTED, 862 GFP_KERNEL); 863 } 864 865 drv_stop_ap(sdata->local, sdata); 866 867 /* free all potentially still buffered bcast frames */ 868 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 869 skb_queue_purge(&sdata->u.ap.ps.bc_buf); 870 871 mutex_lock(&local->mtx); 872 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 873 ieee80211_vif_release_channel(sdata); 874 mutex_unlock(&local->mtx); 875 876 return 0; 877 } 878 879 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ 880 struct iapp_layer2_update { 881 u8 da[ETH_ALEN]; /* broadcast */ 882 u8 sa[ETH_ALEN]; /* STA addr */ 883 __be16 len; /* 6 */ 884 u8 dsap; /* 0 */ 885 u8 ssap; /* 0 */ 886 u8 control; 887 u8 xid_info[3]; 888 } __packed; 889 890 static void ieee80211_send_layer2_update(struct sta_info *sta) 891 { 892 struct iapp_layer2_update *msg; 893 struct sk_buff *skb; 894 895 /* Send Level 2 Update Frame to update forwarding tables in layer 2 896 * bridge devices */ 897 898 skb = dev_alloc_skb(sizeof(*msg)); 899 if (!skb) 900 return; 901 msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); 902 903 /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) 904 * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ 905 906 eth_broadcast_addr(msg->da); 907 memcpy(msg->sa, sta->sta.addr, ETH_ALEN); 908 msg->len = htons(6); 909 msg->dsap = 0; 910 msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ 911 msg->control = 0xaf; /* XID response lsb.1111F101. 912 * F=0 (no poll command; unsolicited frame) */ 913 msg->xid_info[0] = 0x81; /* XID format identifier */ 914 msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ 915 msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ 916 917 skb->dev = sta->sdata->dev; 918 skb->protocol = eth_type_trans(skb, sta->sdata->dev); 919 memset(skb->cb, 0, sizeof(skb->cb)); 920 netif_rx_ni(skb); 921 } 922 923 static int sta_apply_auth_flags(struct ieee80211_local *local, 924 struct sta_info *sta, 925 u32 mask, u32 set) 926 { 927 int ret; 928 929 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 930 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 931 !test_sta_flag(sta, WLAN_STA_AUTH)) { 932 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 933 if (ret) 934 return ret; 935 } 936 937 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 938 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 939 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 940 /* 941 * When peer becomes associated, init rate control as 942 * well. Some drivers require rate control initialized 943 * before drv_sta_state() is called. 944 */ 945 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 946 rate_control_rate_init(sta); 947 948 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 949 if (ret) 950 return ret; 951 } 952 953 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 954 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 955 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 956 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 957 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 958 else 959 ret = 0; 960 if (ret) 961 return ret; 962 } 963 964 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 965 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 966 test_sta_flag(sta, WLAN_STA_ASSOC)) { 967 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 968 if (ret) 969 return ret; 970 } 971 972 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 973 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 974 test_sta_flag(sta, WLAN_STA_AUTH)) { 975 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 976 if (ret) 977 return ret; 978 } 979 980 return 0; 981 } 982 983 static void sta_apply_mesh_params(struct ieee80211_local *local, 984 struct sta_info *sta, 985 struct station_parameters *params) 986 { 987 #ifdef CONFIG_MAC80211_MESH 988 struct ieee80211_sub_if_data *sdata = sta->sdata; 989 u32 changed = 0; 990 991 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 992 switch (params->plink_state) { 993 case NL80211_PLINK_ESTAB: 994 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 995 changed = mesh_plink_inc_estab_count(sdata); 996 sta->mesh->plink_state = params->plink_state; 997 998 ieee80211_mps_sta_status_update(sta); 999 changed |= ieee80211_mps_set_sta_local_pm(sta, 1000 sdata->u.mesh.mshcfg.power_mode); 1001 break; 1002 case NL80211_PLINK_LISTEN: 1003 case NL80211_PLINK_BLOCKED: 1004 case NL80211_PLINK_OPN_SNT: 1005 case NL80211_PLINK_OPN_RCVD: 1006 case NL80211_PLINK_CNF_RCVD: 1007 case NL80211_PLINK_HOLDING: 1008 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1009 changed = mesh_plink_dec_estab_count(sdata); 1010 sta->mesh->plink_state = params->plink_state; 1011 1012 ieee80211_mps_sta_status_update(sta); 1013 changed |= ieee80211_mps_set_sta_local_pm(sta, 1014 NL80211_MESH_POWER_UNKNOWN); 1015 break; 1016 default: 1017 /* nothing */ 1018 break; 1019 } 1020 } 1021 1022 switch (params->plink_action) { 1023 case NL80211_PLINK_ACTION_NO_ACTION: 1024 /* nothing */ 1025 break; 1026 case NL80211_PLINK_ACTION_OPEN: 1027 changed |= mesh_plink_open(sta); 1028 break; 1029 case NL80211_PLINK_ACTION_BLOCK: 1030 changed |= mesh_plink_block(sta); 1031 break; 1032 } 1033 1034 if (params->local_pm) 1035 changed |= ieee80211_mps_set_sta_local_pm(sta, 1036 params->local_pm); 1037 1038 ieee80211_mbss_info_change_notify(sdata, changed); 1039 #endif 1040 } 1041 1042 static int sta_apply_parameters(struct ieee80211_local *local, 1043 struct sta_info *sta, 1044 struct station_parameters *params) 1045 { 1046 int ret = 0; 1047 struct ieee80211_supported_band *sband; 1048 struct ieee80211_sub_if_data *sdata = sta->sdata; 1049 enum ieee80211_band band = ieee80211_get_sdata_band(sdata); 1050 u32 mask, set; 1051 1052 sband = local->hw.wiphy->bands[band]; 1053 1054 mask = params->sta_flags_mask; 1055 set = params->sta_flags_set; 1056 1057 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1058 /* 1059 * In mesh mode, ASSOCIATED isn't part of the nl80211 1060 * API but must follow AUTHENTICATED for driver state. 1061 */ 1062 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1063 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1064 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1065 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1066 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1067 /* 1068 * TDLS -- everything follows authorized, but 1069 * only becoming authorized is possible, not 1070 * going back 1071 */ 1072 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1073 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1074 BIT(NL80211_STA_FLAG_ASSOCIATED); 1075 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1076 BIT(NL80211_STA_FLAG_ASSOCIATED); 1077 } 1078 } 1079 1080 if (mask & BIT(NL80211_STA_FLAG_WME) && 1081 local->hw.queues >= IEEE80211_NUM_ACS) 1082 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1083 1084 /* auth flags will be set later for TDLS, 1085 * and for unassociated stations that move to assocaited */ 1086 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1087 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1088 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1089 ret = sta_apply_auth_flags(local, sta, mask, set); 1090 if (ret) 1091 return ret; 1092 } 1093 1094 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1095 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1096 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1097 else 1098 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1099 } 1100 1101 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1102 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1103 if (set & BIT(NL80211_STA_FLAG_MFP)) 1104 set_sta_flag(sta, WLAN_STA_MFP); 1105 else 1106 clear_sta_flag(sta, WLAN_STA_MFP); 1107 } 1108 1109 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1110 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1111 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1112 else 1113 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1114 } 1115 1116 /* mark TDLS channel switch support, if the AP allows it */ 1117 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1118 !sdata->u.mgd.tdls_chan_switch_prohibited && 1119 params->ext_capab_len >= 4 && 1120 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1121 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1122 1123 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1124 !sdata->u.mgd.tdls_wider_bw_prohibited && 1125 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1126 params->ext_capab_len >= 8 && 1127 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1128 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1129 1130 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1131 sta->sta.uapsd_queues = params->uapsd_queues; 1132 sta->sta.max_sp = params->max_sp; 1133 } 1134 1135 /* The sender might not have sent the last bit, consider it to be 0 */ 1136 if (params->ext_capab_len >= 8) { 1137 u8 val = (params->ext_capab[7] & 1138 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1139 1140 /* we did get all the bits, take the MSB as well */ 1141 if (params->ext_capab_len >= 9) { 1142 u8 val_msb = params->ext_capab[8] & 1143 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1144 val_msb <<= 1; 1145 val |= val_msb; 1146 } 1147 1148 switch (val) { 1149 case 1: 1150 sta->sta.max_amsdu_subframes = 32; 1151 break; 1152 case 2: 1153 sta->sta.max_amsdu_subframes = 16; 1154 break; 1155 case 3: 1156 sta->sta.max_amsdu_subframes = 8; 1157 break; 1158 default: 1159 sta->sta.max_amsdu_subframes = 0; 1160 } 1161 } 1162 1163 /* 1164 * cfg80211 validates this (1-2007) and allows setting the AID 1165 * only when creating a new station entry 1166 */ 1167 if (params->aid) 1168 sta->sta.aid = params->aid; 1169 1170 /* 1171 * Some of the following updates would be racy if called on an 1172 * existing station, via ieee80211_change_station(). However, 1173 * all such changes are rejected by cfg80211 except for updates 1174 * changing the supported rates on an existing but not yet used 1175 * TDLS peer. 1176 */ 1177 1178 if (params->listen_interval >= 0) 1179 sta->listen_interval = params->listen_interval; 1180 1181 if (params->supported_rates) { 1182 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1183 sband, params->supported_rates, 1184 params->supported_rates_len, 1185 &sta->sta.supp_rates[band]); 1186 } 1187 1188 if (params->ht_capa) 1189 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1190 params->ht_capa, sta); 1191 1192 /* VHT can override some HT caps such as the A-MSDU max length */ 1193 if (params->vht_capa) 1194 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1195 params->vht_capa, sta); 1196 1197 if (params->opmode_notif_used) { 1198 /* returned value is only needed for rc update, but the 1199 * rc isn't initialized here yet, so ignore it 1200 */ 1201 __ieee80211_vht_handle_opmode(sdata, sta, 1202 params->opmode_notif, band); 1203 } 1204 1205 if (ieee80211_vif_is_mesh(&sdata->vif)) 1206 sta_apply_mesh_params(local, sta, params); 1207 1208 /* set the STA state after all sta info from usermode has been set */ 1209 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1210 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1211 ret = sta_apply_auth_flags(local, sta, mask, set); 1212 if (ret) 1213 return ret; 1214 } 1215 1216 return 0; 1217 } 1218 1219 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1220 const u8 *mac, 1221 struct station_parameters *params) 1222 { 1223 struct ieee80211_local *local = wiphy_priv(wiphy); 1224 struct sta_info *sta; 1225 struct ieee80211_sub_if_data *sdata; 1226 int err; 1227 int layer2_update; 1228 1229 if (params->vlan) { 1230 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1231 1232 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1233 sdata->vif.type != NL80211_IFTYPE_AP) 1234 return -EINVAL; 1235 } else 1236 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1237 1238 if (ether_addr_equal(mac, sdata->vif.addr)) 1239 return -EINVAL; 1240 1241 if (is_multicast_ether_addr(mac)) 1242 return -EINVAL; 1243 1244 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1245 if (!sta) 1246 return -ENOMEM; 1247 1248 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1249 sta->sta.tdls = true; 1250 1251 err = sta_apply_parameters(local, sta, params); 1252 if (err) { 1253 sta_info_free(local, sta); 1254 return err; 1255 } 1256 1257 /* 1258 * for TDLS and for unassociated station, rate control should be 1259 * initialized only when rates are known and station is marked 1260 * authorized/associated 1261 */ 1262 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1263 test_sta_flag(sta, WLAN_STA_ASSOC)) 1264 rate_control_rate_init(sta); 1265 1266 layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || 1267 sdata->vif.type == NL80211_IFTYPE_AP; 1268 1269 err = sta_info_insert_rcu(sta); 1270 if (err) { 1271 rcu_read_unlock(); 1272 return err; 1273 } 1274 1275 if (layer2_update) 1276 ieee80211_send_layer2_update(sta); 1277 1278 rcu_read_unlock(); 1279 1280 return 0; 1281 } 1282 1283 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1284 struct station_del_parameters *params) 1285 { 1286 struct ieee80211_sub_if_data *sdata; 1287 1288 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1289 1290 if (params->mac) 1291 return sta_info_destroy_addr_bss(sdata, params->mac); 1292 1293 sta_info_flush(sdata); 1294 return 0; 1295 } 1296 1297 static int ieee80211_change_station(struct wiphy *wiphy, 1298 struct net_device *dev, const u8 *mac, 1299 struct station_parameters *params) 1300 { 1301 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1302 struct ieee80211_local *local = wiphy_priv(wiphy); 1303 struct sta_info *sta; 1304 struct ieee80211_sub_if_data *vlansdata; 1305 enum cfg80211_station_type statype; 1306 int err; 1307 1308 mutex_lock(&local->sta_mtx); 1309 1310 sta = sta_info_get_bss(sdata, mac); 1311 if (!sta) { 1312 err = -ENOENT; 1313 goto out_err; 1314 } 1315 1316 switch (sdata->vif.type) { 1317 case NL80211_IFTYPE_MESH_POINT: 1318 if (sdata->u.mesh.user_mpm) 1319 statype = CFG80211_STA_MESH_PEER_USER; 1320 else 1321 statype = CFG80211_STA_MESH_PEER_KERNEL; 1322 break; 1323 case NL80211_IFTYPE_ADHOC: 1324 statype = CFG80211_STA_IBSS; 1325 break; 1326 case NL80211_IFTYPE_STATION: 1327 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1328 statype = CFG80211_STA_AP_STA; 1329 break; 1330 } 1331 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1332 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1333 else 1334 statype = CFG80211_STA_TDLS_PEER_SETUP; 1335 break; 1336 case NL80211_IFTYPE_AP: 1337 case NL80211_IFTYPE_AP_VLAN: 1338 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1339 statype = CFG80211_STA_AP_CLIENT; 1340 else 1341 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1342 break; 1343 default: 1344 err = -EOPNOTSUPP; 1345 goto out_err; 1346 } 1347 1348 err = cfg80211_check_station_change(wiphy, params, statype); 1349 if (err) 1350 goto out_err; 1351 1352 if (params->vlan && params->vlan != sta->sdata->dev) { 1353 bool prev_4addr = false; 1354 bool new_4addr = false; 1355 1356 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1357 1358 if (params->vlan->ieee80211_ptr->use_4addr) { 1359 if (vlansdata->u.vlan.sta) { 1360 err = -EBUSY; 1361 goto out_err; 1362 } 1363 1364 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1365 new_4addr = true; 1366 } 1367 1368 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1369 sta->sdata->u.vlan.sta) { 1370 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1371 prev_4addr = true; 1372 } 1373 1374 sta->sdata = vlansdata; 1375 ieee80211_check_fast_xmit(sta); 1376 1377 if (sta->sta_state == IEEE80211_STA_AUTHORIZED && 1378 prev_4addr != new_4addr) { 1379 if (new_4addr) 1380 atomic_dec(&sta->sdata->bss->num_mcast_sta); 1381 else 1382 atomic_inc(&sta->sdata->bss->num_mcast_sta); 1383 } 1384 1385 ieee80211_send_layer2_update(sta); 1386 } 1387 1388 err = sta_apply_parameters(local, sta, params); 1389 if (err) 1390 goto out_err; 1391 1392 mutex_unlock(&local->sta_mtx); 1393 1394 if ((sdata->vif.type == NL80211_IFTYPE_AP || 1395 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && 1396 sta->known_smps_mode != sta->sdata->bss->req_smps && 1397 test_sta_flag(sta, WLAN_STA_AUTHORIZED) && 1398 sta_info_tx_streams(sta) != 1) { 1399 ht_dbg(sta->sdata, 1400 "%pM just authorized and MIMO capable - update SMPS\n", 1401 sta->sta.addr); 1402 ieee80211_send_smps_action(sta->sdata, 1403 sta->sdata->bss->req_smps, 1404 sta->sta.addr, 1405 sta->sdata->vif.bss_conf.bssid); 1406 } 1407 1408 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1409 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1410 ieee80211_recalc_ps(local); 1411 ieee80211_recalc_ps_vif(sdata); 1412 } 1413 1414 return 0; 1415 out_err: 1416 mutex_unlock(&local->sta_mtx); 1417 return err; 1418 } 1419 1420 #ifdef CONFIG_MAC80211_MESH 1421 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1422 const u8 *dst, const u8 *next_hop) 1423 { 1424 struct ieee80211_sub_if_data *sdata; 1425 struct mesh_path *mpath; 1426 struct sta_info *sta; 1427 1428 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1429 1430 rcu_read_lock(); 1431 sta = sta_info_get(sdata, next_hop); 1432 if (!sta) { 1433 rcu_read_unlock(); 1434 return -ENOENT; 1435 } 1436 1437 mpath = mesh_path_add(sdata, dst); 1438 if (IS_ERR(mpath)) { 1439 rcu_read_unlock(); 1440 return PTR_ERR(mpath); 1441 } 1442 1443 mesh_path_fix_nexthop(mpath, sta); 1444 1445 rcu_read_unlock(); 1446 return 0; 1447 } 1448 1449 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 1450 const u8 *dst) 1451 { 1452 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1453 1454 if (dst) 1455 return mesh_path_del(sdata, dst); 1456 1457 mesh_path_flush_by_iface(sdata); 1458 return 0; 1459 } 1460 1461 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 1462 const u8 *dst, const u8 *next_hop) 1463 { 1464 struct ieee80211_sub_if_data *sdata; 1465 struct mesh_path *mpath; 1466 struct sta_info *sta; 1467 1468 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1469 1470 rcu_read_lock(); 1471 1472 sta = sta_info_get(sdata, next_hop); 1473 if (!sta) { 1474 rcu_read_unlock(); 1475 return -ENOENT; 1476 } 1477 1478 mpath = mesh_path_lookup(sdata, dst); 1479 if (!mpath) { 1480 rcu_read_unlock(); 1481 return -ENOENT; 1482 } 1483 1484 mesh_path_fix_nexthop(mpath, sta); 1485 1486 rcu_read_unlock(); 1487 return 0; 1488 } 1489 1490 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 1491 struct mpath_info *pinfo) 1492 { 1493 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 1494 1495 if (next_hop_sta) 1496 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 1497 else 1498 eth_zero_addr(next_hop); 1499 1500 memset(pinfo, 0, sizeof(*pinfo)); 1501 1502 pinfo->generation = mesh_paths_generation; 1503 1504 pinfo->filled = MPATH_INFO_FRAME_QLEN | 1505 MPATH_INFO_SN | 1506 MPATH_INFO_METRIC | 1507 MPATH_INFO_EXPTIME | 1508 MPATH_INFO_DISCOVERY_TIMEOUT | 1509 MPATH_INFO_DISCOVERY_RETRIES | 1510 MPATH_INFO_FLAGS; 1511 1512 pinfo->frame_qlen = mpath->frame_queue.qlen; 1513 pinfo->sn = mpath->sn; 1514 pinfo->metric = mpath->metric; 1515 if (time_before(jiffies, mpath->exp_time)) 1516 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 1517 pinfo->discovery_timeout = 1518 jiffies_to_msecs(mpath->discovery_timeout); 1519 pinfo->discovery_retries = mpath->discovery_retries; 1520 if (mpath->flags & MESH_PATH_ACTIVE) 1521 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 1522 if (mpath->flags & MESH_PATH_RESOLVING) 1523 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 1524 if (mpath->flags & MESH_PATH_SN_VALID) 1525 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 1526 if (mpath->flags & MESH_PATH_FIXED) 1527 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 1528 if (mpath->flags & MESH_PATH_RESOLVED) 1529 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 1530 } 1531 1532 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 1533 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 1534 1535 { 1536 struct ieee80211_sub_if_data *sdata; 1537 struct mesh_path *mpath; 1538 1539 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1540 1541 rcu_read_lock(); 1542 mpath = mesh_path_lookup(sdata, dst); 1543 if (!mpath) { 1544 rcu_read_unlock(); 1545 return -ENOENT; 1546 } 1547 memcpy(dst, mpath->dst, ETH_ALEN); 1548 mpath_set_pinfo(mpath, next_hop, pinfo); 1549 rcu_read_unlock(); 1550 return 0; 1551 } 1552 1553 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 1554 int idx, u8 *dst, u8 *next_hop, 1555 struct mpath_info *pinfo) 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 = mesh_path_lookup_by_idx(sdata, idx); 1564 if (!mpath) { 1565 rcu_read_unlock(); 1566 return -ENOENT; 1567 } 1568 memcpy(dst, mpath->dst, ETH_ALEN); 1569 mpath_set_pinfo(mpath, next_hop, pinfo); 1570 rcu_read_unlock(); 1571 return 0; 1572 } 1573 1574 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 1575 struct mpath_info *pinfo) 1576 { 1577 memset(pinfo, 0, sizeof(*pinfo)); 1578 memcpy(mpp, mpath->mpp, ETH_ALEN); 1579 1580 pinfo->generation = mpp_paths_generation; 1581 } 1582 1583 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 1584 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 1585 1586 { 1587 struct ieee80211_sub_if_data *sdata; 1588 struct mesh_path *mpath; 1589 1590 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1591 1592 rcu_read_lock(); 1593 mpath = mpp_path_lookup(sdata, dst); 1594 if (!mpath) { 1595 rcu_read_unlock(); 1596 return -ENOENT; 1597 } 1598 memcpy(dst, mpath->dst, ETH_ALEN); 1599 mpp_set_pinfo(mpath, mpp, pinfo); 1600 rcu_read_unlock(); 1601 return 0; 1602 } 1603 1604 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 1605 int idx, u8 *dst, u8 *mpp, 1606 struct mpath_info *pinfo) 1607 { 1608 struct ieee80211_sub_if_data *sdata; 1609 struct mesh_path *mpath; 1610 1611 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1612 1613 rcu_read_lock(); 1614 mpath = mpp_path_lookup_by_idx(sdata, idx); 1615 if (!mpath) { 1616 rcu_read_unlock(); 1617 return -ENOENT; 1618 } 1619 memcpy(dst, mpath->dst, ETH_ALEN); 1620 mpp_set_pinfo(mpath, mpp, pinfo); 1621 rcu_read_unlock(); 1622 return 0; 1623 } 1624 1625 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 1626 struct net_device *dev, 1627 struct mesh_config *conf) 1628 { 1629 struct ieee80211_sub_if_data *sdata; 1630 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1631 1632 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 1633 return 0; 1634 } 1635 1636 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 1637 { 1638 return (mask >> (parm-1)) & 0x1; 1639 } 1640 1641 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 1642 const struct mesh_setup *setup) 1643 { 1644 u8 *new_ie; 1645 const u8 *old_ie; 1646 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 1647 struct ieee80211_sub_if_data, u.mesh); 1648 1649 /* allocate information elements */ 1650 new_ie = NULL; 1651 old_ie = ifmsh->ie; 1652 1653 if (setup->ie_len) { 1654 new_ie = kmemdup(setup->ie, setup->ie_len, 1655 GFP_KERNEL); 1656 if (!new_ie) 1657 return -ENOMEM; 1658 } 1659 ifmsh->ie_len = setup->ie_len; 1660 ifmsh->ie = new_ie; 1661 kfree(old_ie); 1662 1663 /* now copy the rest of the setup parameters */ 1664 ifmsh->mesh_id_len = setup->mesh_id_len; 1665 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 1666 ifmsh->mesh_sp_id = setup->sync_method; 1667 ifmsh->mesh_pp_id = setup->path_sel_proto; 1668 ifmsh->mesh_pm_id = setup->path_metric; 1669 ifmsh->user_mpm = setup->user_mpm; 1670 ifmsh->mesh_auth_id = setup->auth_id; 1671 ifmsh->security = IEEE80211_MESH_SEC_NONE; 1672 if (setup->is_authenticated) 1673 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 1674 if (setup->is_secure) 1675 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 1676 1677 /* mcast rate setting in Mesh Node */ 1678 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 1679 sizeof(setup->mcast_rate)); 1680 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 1681 1682 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 1683 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 1684 1685 return 0; 1686 } 1687 1688 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 1689 struct net_device *dev, u32 mask, 1690 const struct mesh_config *nconf) 1691 { 1692 struct mesh_config *conf; 1693 struct ieee80211_sub_if_data *sdata; 1694 struct ieee80211_if_mesh *ifmsh; 1695 1696 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1697 ifmsh = &sdata->u.mesh; 1698 1699 /* Set the config options which we are interested in setting */ 1700 conf = &(sdata->u.mesh.mshcfg); 1701 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 1702 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 1703 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 1704 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 1705 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 1706 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 1707 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 1708 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 1709 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 1710 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 1711 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 1712 conf->dot11MeshTTL = nconf->dot11MeshTTL; 1713 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 1714 conf->element_ttl = nconf->element_ttl; 1715 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 1716 if (ifmsh->user_mpm) 1717 return -EBUSY; 1718 conf->auto_open_plinks = nconf->auto_open_plinks; 1719 } 1720 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 1721 conf->dot11MeshNbrOffsetMaxNeighbor = 1722 nconf->dot11MeshNbrOffsetMaxNeighbor; 1723 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 1724 conf->dot11MeshHWMPmaxPREQretries = 1725 nconf->dot11MeshHWMPmaxPREQretries; 1726 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 1727 conf->path_refresh_time = nconf->path_refresh_time; 1728 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 1729 conf->min_discovery_timeout = nconf->min_discovery_timeout; 1730 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 1731 conf->dot11MeshHWMPactivePathTimeout = 1732 nconf->dot11MeshHWMPactivePathTimeout; 1733 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 1734 conf->dot11MeshHWMPpreqMinInterval = 1735 nconf->dot11MeshHWMPpreqMinInterval; 1736 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 1737 conf->dot11MeshHWMPperrMinInterval = 1738 nconf->dot11MeshHWMPperrMinInterval; 1739 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 1740 mask)) 1741 conf->dot11MeshHWMPnetDiameterTraversalTime = 1742 nconf->dot11MeshHWMPnetDiameterTraversalTime; 1743 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 1744 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 1745 ieee80211_mesh_root_setup(ifmsh); 1746 } 1747 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 1748 /* our current gate announcement implementation rides on root 1749 * announcements, so require this ifmsh to also be a root node 1750 * */ 1751 if (nconf->dot11MeshGateAnnouncementProtocol && 1752 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 1753 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 1754 ieee80211_mesh_root_setup(ifmsh); 1755 } 1756 conf->dot11MeshGateAnnouncementProtocol = 1757 nconf->dot11MeshGateAnnouncementProtocol; 1758 } 1759 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 1760 conf->dot11MeshHWMPRannInterval = 1761 nconf->dot11MeshHWMPRannInterval; 1762 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 1763 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 1764 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 1765 /* our RSSI threshold implementation is supported only for 1766 * devices that report signal in dBm. 1767 */ 1768 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 1769 return -ENOTSUPP; 1770 conf->rssi_threshold = nconf->rssi_threshold; 1771 } 1772 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 1773 conf->ht_opmode = nconf->ht_opmode; 1774 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 1775 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 1776 } 1777 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 1778 conf->dot11MeshHWMPactivePathToRootTimeout = 1779 nconf->dot11MeshHWMPactivePathToRootTimeout; 1780 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 1781 conf->dot11MeshHWMProotInterval = 1782 nconf->dot11MeshHWMProotInterval; 1783 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 1784 conf->dot11MeshHWMPconfirmationInterval = 1785 nconf->dot11MeshHWMPconfirmationInterval; 1786 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 1787 conf->power_mode = nconf->power_mode; 1788 ieee80211_mps_local_status_update(sdata); 1789 } 1790 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 1791 conf->dot11MeshAwakeWindowDuration = 1792 nconf->dot11MeshAwakeWindowDuration; 1793 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 1794 conf->plink_timeout = nconf->plink_timeout; 1795 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 1796 return 0; 1797 } 1798 1799 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 1800 const struct mesh_config *conf, 1801 const struct mesh_setup *setup) 1802 { 1803 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1804 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 1805 int err; 1806 1807 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 1808 err = copy_mesh_setup(ifmsh, setup); 1809 if (err) 1810 return err; 1811 1812 /* can mesh use other SMPS modes? */ 1813 sdata->smps_mode = IEEE80211_SMPS_OFF; 1814 sdata->needed_rx_chains = sdata->local->rx_chains; 1815 1816 mutex_lock(&sdata->local->mtx); 1817 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 1818 IEEE80211_CHANCTX_SHARED); 1819 mutex_unlock(&sdata->local->mtx); 1820 if (err) 1821 return err; 1822 1823 return ieee80211_start_mesh(sdata); 1824 } 1825 1826 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 1827 { 1828 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1829 1830 ieee80211_stop_mesh(sdata); 1831 mutex_lock(&sdata->local->mtx); 1832 ieee80211_vif_release_channel(sdata); 1833 mutex_unlock(&sdata->local->mtx); 1834 1835 return 0; 1836 } 1837 #endif 1838 1839 static int ieee80211_change_bss(struct wiphy *wiphy, 1840 struct net_device *dev, 1841 struct bss_parameters *params) 1842 { 1843 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1844 enum ieee80211_band band; 1845 u32 changed = 0; 1846 1847 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 1848 return -ENOENT; 1849 1850 band = ieee80211_get_sdata_band(sdata); 1851 1852 if (params->use_cts_prot >= 0) { 1853 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 1854 changed |= BSS_CHANGED_ERP_CTS_PROT; 1855 } 1856 if (params->use_short_preamble >= 0) { 1857 sdata->vif.bss_conf.use_short_preamble = 1858 params->use_short_preamble; 1859 changed |= BSS_CHANGED_ERP_PREAMBLE; 1860 } 1861 1862 if (!sdata->vif.bss_conf.use_short_slot && 1863 band == IEEE80211_BAND_5GHZ) { 1864 sdata->vif.bss_conf.use_short_slot = true; 1865 changed |= BSS_CHANGED_ERP_SLOT; 1866 } 1867 1868 if (params->use_short_slot_time >= 0) { 1869 sdata->vif.bss_conf.use_short_slot = 1870 params->use_short_slot_time; 1871 changed |= BSS_CHANGED_ERP_SLOT; 1872 } 1873 1874 if (params->basic_rates) { 1875 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1876 wiphy->bands[band], 1877 params->basic_rates, 1878 params->basic_rates_len, 1879 &sdata->vif.bss_conf.basic_rates); 1880 changed |= BSS_CHANGED_BASIC_RATES; 1881 } 1882 1883 if (params->ap_isolate >= 0) { 1884 if (params->ap_isolate) 1885 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1886 else 1887 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 1888 } 1889 1890 if (params->ht_opmode >= 0) { 1891 sdata->vif.bss_conf.ht_operation_mode = 1892 (u16) params->ht_opmode; 1893 changed |= BSS_CHANGED_HT; 1894 } 1895 1896 if (params->p2p_ctwindow >= 0) { 1897 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1898 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1899 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1900 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1901 changed |= BSS_CHANGED_P2P_PS; 1902 } 1903 1904 if (params->p2p_opp_ps > 0) { 1905 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1906 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1907 changed |= BSS_CHANGED_P2P_PS; 1908 } else if (params->p2p_opp_ps == 0) { 1909 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 1910 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 1911 changed |= BSS_CHANGED_P2P_PS; 1912 } 1913 1914 ieee80211_bss_info_change_notify(sdata, changed); 1915 1916 return 0; 1917 } 1918 1919 static int ieee80211_set_txq_params(struct wiphy *wiphy, 1920 struct net_device *dev, 1921 struct ieee80211_txq_params *params) 1922 { 1923 struct ieee80211_local *local = wiphy_priv(wiphy); 1924 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1925 struct ieee80211_tx_queue_params p; 1926 1927 if (!local->ops->conf_tx) 1928 return -EOPNOTSUPP; 1929 1930 if (local->hw.queues < IEEE80211_NUM_ACS) 1931 return -EOPNOTSUPP; 1932 1933 memset(&p, 0, sizeof(p)); 1934 p.aifs = params->aifs; 1935 p.cw_max = params->cwmax; 1936 p.cw_min = params->cwmin; 1937 p.txop = params->txop; 1938 1939 /* 1940 * Setting tx queue params disables u-apsd because it's only 1941 * called in master mode. 1942 */ 1943 p.uapsd = false; 1944 1945 sdata->tx_conf[params->ac] = p; 1946 if (drv_conf_tx(local, sdata, params->ac, &p)) { 1947 wiphy_debug(local->hw.wiphy, 1948 "failed to set TX queue parameters for AC %d\n", 1949 params->ac); 1950 return -EINVAL; 1951 } 1952 1953 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 1954 1955 return 0; 1956 } 1957 1958 #ifdef CONFIG_PM 1959 static int ieee80211_suspend(struct wiphy *wiphy, 1960 struct cfg80211_wowlan *wowlan) 1961 { 1962 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 1963 } 1964 1965 static int ieee80211_resume(struct wiphy *wiphy) 1966 { 1967 return __ieee80211_resume(wiphy_priv(wiphy)); 1968 } 1969 #else 1970 #define ieee80211_suspend NULL 1971 #define ieee80211_resume NULL 1972 #endif 1973 1974 static int ieee80211_scan(struct wiphy *wiphy, 1975 struct cfg80211_scan_request *req) 1976 { 1977 struct ieee80211_sub_if_data *sdata; 1978 1979 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 1980 1981 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 1982 case NL80211_IFTYPE_STATION: 1983 case NL80211_IFTYPE_ADHOC: 1984 case NL80211_IFTYPE_MESH_POINT: 1985 case NL80211_IFTYPE_P2P_CLIENT: 1986 case NL80211_IFTYPE_P2P_DEVICE: 1987 break; 1988 case NL80211_IFTYPE_P2P_GO: 1989 if (sdata->local->ops->hw_scan) 1990 break; 1991 /* 1992 * FIXME: implement NoA while scanning in software, 1993 * for now fall through to allow scanning only when 1994 * beaconing hasn't been configured yet 1995 */ 1996 case NL80211_IFTYPE_AP: 1997 /* 1998 * If the scan has been forced (and the driver supports 1999 * forcing), don't care about being beaconing already. 2000 * This will create problems to the attached stations (e.g. all 2001 * the frames sent while scanning on other channel will be 2002 * lost) 2003 */ 2004 if (sdata->u.ap.beacon && 2005 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2006 !(req->flags & NL80211_SCAN_FLAG_AP))) 2007 return -EOPNOTSUPP; 2008 break; 2009 default: 2010 return -EOPNOTSUPP; 2011 } 2012 2013 return ieee80211_request_scan(sdata, req); 2014 } 2015 2016 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2017 { 2018 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2019 } 2020 2021 static int 2022 ieee80211_sched_scan_start(struct wiphy *wiphy, 2023 struct net_device *dev, 2024 struct cfg80211_sched_scan_request *req) 2025 { 2026 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2027 2028 if (!sdata->local->ops->sched_scan_start) 2029 return -EOPNOTSUPP; 2030 2031 return ieee80211_request_sched_scan_start(sdata, req); 2032 } 2033 2034 static int 2035 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) 2036 { 2037 struct ieee80211_local *local = wiphy_priv(wiphy); 2038 2039 if (!local->ops->sched_scan_stop) 2040 return -EOPNOTSUPP; 2041 2042 return ieee80211_request_sched_scan_stop(local); 2043 } 2044 2045 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2046 struct cfg80211_auth_request *req) 2047 { 2048 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2049 } 2050 2051 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2052 struct cfg80211_assoc_request *req) 2053 { 2054 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2055 } 2056 2057 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2058 struct cfg80211_deauth_request *req) 2059 { 2060 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2061 } 2062 2063 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2064 struct cfg80211_disassoc_request *req) 2065 { 2066 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2067 } 2068 2069 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2070 struct cfg80211_ibss_params *params) 2071 { 2072 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2073 } 2074 2075 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2076 { 2077 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2078 } 2079 2080 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2081 struct ocb_setup *setup) 2082 { 2083 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2084 } 2085 2086 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2087 { 2088 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2089 } 2090 2091 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2092 int rate[IEEE80211_NUM_BANDS]) 2093 { 2094 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2095 2096 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2097 sizeof(int) * IEEE80211_NUM_BANDS); 2098 2099 return 0; 2100 } 2101 2102 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2103 { 2104 struct ieee80211_local *local = wiphy_priv(wiphy); 2105 int err; 2106 2107 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2108 ieee80211_check_fast_xmit_all(local); 2109 2110 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2111 2112 if (err) { 2113 ieee80211_check_fast_xmit_all(local); 2114 return err; 2115 } 2116 } 2117 2118 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2119 (changed & WIPHY_PARAM_DYN_ACK)) { 2120 s16 coverage_class; 2121 2122 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2123 wiphy->coverage_class : -1; 2124 err = drv_set_coverage_class(local, coverage_class); 2125 2126 if (err) 2127 return err; 2128 } 2129 2130 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2131 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2132 2133 if (err) 2134 return err; 2135 } 2136 2137 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2138 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2139 return -EINVAL; 2140 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2141 } 2142 if (changed & WIPHY_PARAM_RETRY_LONG) { 2143 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2144 return -EINVAL; 2145 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2146 } 2147 if (changed & 2148 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2149 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2150 2151 return 0; 2152 } 2153 2154 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2155 struct wireless_dev *wdev, 2156 enum nl80211_tx_power_setting type, int mbm) 2157 { 2158 struct ieee80211_local *local = wiphy_priv(wiphy); 2159 struct ieee80211_sub_if_data *sdata; 2160 enum nl80211_tx_power_setting txp_type = type; 2161 bool update_txp_type = false; 2162 2163 if (wdev) { 2164 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2165 2166 switch (type) { 2167 case NL80211_TX_POWER_AUTOMATIC: 2168 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2169 txp_type = NL80211_TX_POWER_LIMITED; 2170 break; 2171 case NL80211_TX_POWER_LIMITED: 2172 case NL80211_TX_POWER_FIXED: 2173 if (mbm < 0 || (mbm % 100)) 2174 return -EOPNOTSUPP; 2175 sdata->user_power_level = MBM_TO_DBM(mbm); 2176 break; 2177 } 2178 2179 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2180 update_txp_type = true; 2181 sdata->vif.bss_conf.txpower_type = txp_type; 2182 } 2183 2184 ieee80211_recalc_txpower(sdata, update_txp_type); 2185 2186 return 0; 2187 } 2188 2189 switch (type) { 2190 case NL80211_TX_POWER_AUTOMATIC: 2191 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2192 txp_type = NL80211_TX_POWER_LIMITED; 2193 break; 2194 case NL80211_TX_POWER_LIMITED: 2195 case NL80211_TX_POWER_FIXED: 2196 if (mbm < 0 || (mbm % 100)) 2197 return -EOPNOTSUPP; 2198 local->user_power_level = MBM_TO_DBM(mbm); 2199 break; 2200 } 2201 2202 mutex_lock(&local->iflist_mtx); 2203 list_for_each_entry(sdata, &local->interfaces, list) { 2204 sdata->user_power_level = local->user_power_level; 2205 if (txp_type != sdata->vif.bss_conf.txpower_type) 2206 update_txp_type = true; 2207 sdata->vif.bss_conf.txpower_type = txp_type; 2208 } 2209 list_for_each_entry(sdata, &local->interfaces, list) 2210 ieee80211_recalc_txpower(sdata, update_txp_type); 2211 mutex_unlock(&local->iflist_mtx); 2212 2213 return 0; 2214 } 2215 2216 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2217 struct wireless_dev *wdev, 2218 int *dbm) 2219 { 2220 struct ieee80211_local *local = wiphy_priv(wiphy); 2221 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2222 2223 if (local->ops->get_txpower) 2224 return drv_get_txpower(local, sdata, dbm); 2225 2226 if (!local->use_chanctx) 2227 *dbm = local->hw.conf.power_level; 2228 else 2229 *dbm = sdata->vif.bss_conf.txpower; 2230 2231 return 0; 2232 } 2233 2234 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, 2235 const u8 *addr) 2236 { 2237 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2238 2239 memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); 2240 2241 return 0; 2242 } 2243 2244 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2245 { 2246 struct ieee80211_local *local = wiphy_priv(wiphy); 2247 2248 drv_rfkill_poll(local); 2249 } 2250 2251 #ifdef CONFIG_NL80211_TESTMODE 2252 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2253 struct wireless_dev *wdev, 2254 void *data, int len) 2255 { 2256 struct ieee80211_local *local = wiphy_priv(wiphy); 2257 struct ieee80211_vif *vif = NULL; 2258 2259 if (!local->ops->testmode_cmd) 2260 return -EOPNOTSUPP; 2261 2262 if (wdev) { 2263 struct ieee80211_sub_if_data *sdata; 2264 2265 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2266 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2267 vif = &sdata->vif; 2268 } 2269 2270 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2271 } 2272 2273 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2274 struct sk_buff *skb, 2275 struct netlink_callback *cb, 2276 void *data, int len) 2277 { 2278 struct ieee80211_local *local = wiphy_priv(wiphy); 2279 2280 if (!local->ops->testmode_dump) 2281 return -EOPNOTSUPP; 2282 2283 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2284 } 2285 #endif 2286 2287 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2288 enum ieee80211_smps_mode smps_mode) 2289 { 2290 struct sta_info *sta; 2291 enum ieee80211_smps_mode old_req; 2292 2293 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) 2294 return -EINVAL; 2295 2296 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2297 return 0; 2298 2299 old_req = sdata->u.ap.req_smps; 2300 sdata->u.ap.req_smps = smps_mode; 2301 2302 /* AUTOMATIC doesn't mean much for AP - don't allow it */ 2303 if (old_req == smps_mode || 2304 smps_mode == IEEE80211_SMPS_AUTOMATIC) 2305 return 0; 2306 2307 /* If no associated stations, there's no need to do anything */ 2308 if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { 2309 sdata->smps_mode = smps_mode; 2310 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2311 return 0; 2312 } 2313 2314 ht_dbg(sdata, 2315 "SMPS %d requested in AP mode, sending Action frame to %d stations\n", 2316 smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); 2317 2318 mutex_lock(&sdata->local->sta_mtx); 2319 list_for_each_entry(sta, &sdata->local->sta_list, list) { 2320 /* 2321 * Only stations associated to our AP and 2322 * associated VLANs 2323 */ 2324 if (sta->sdata->bss != &sdata->u.ap) 2325 continue; 2326 2327 /* This station doesn't support MIMO - skip it */ 2328 if (sta_info_tx_streams(sta) == 1) 2329 continue; 2330 2331 /* 2332 * Don't wake up a STA just to send the action frame 2333 * unless we are getting more restrictive. 2334 */ 2335 if (test_sta_flag(sta, WLAN_STA_PS_STA) && 2336 !ieee80211_smps_is_restrictive(sta->known_smps_mode, 2337 smps_mode)) { 2338 ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", 2339 sta->sta.addr); 2340 continue; 2341 } 2342 2343 /* 2344 * If the STA is not authorized, wait until it gets 2345 * authorized and the action frame will be sent then. 2346 */ 2347 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2348 continue; 2349 2350 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); 2351 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, 2352 sdata->vif.bss_conf.bssid); 2353 } 2354 mutex_unlock(&sdata->local->sta_mtx); 2355 2356 sdata->smps_mode = smps_mode; 2357 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); 2358 2359 return 0; 2360 } 2361 2362 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2363 enum ieee80211_smps_mode smps_mode) 2364 { 2365 const u8 *ap; 2366 enum ieee80211_smps_mode old_req; 2367 int err; 2368 struct sta_info *sta; 2369 bool tdls_peer_found = false; 2370 2371 lockdep_assert_held(&sdata->wdev.mtx); 2372 2373 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2374 return -EINVAL; 2375 2376 old_req = sdata->u.mgd.req_smps; 2377 sdata->u.mgd.req_smps = smps_mode; 2378 2379 if (old_req == smps_mode && 2380 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2381 return 0; 2382 2383 /* 2384 * If not associated, or current association is not an HT 2385 * association, there's no need to do anything, just store 2386 * the new value until we associate. 2387 */ 2388 if (!sdata->u.mgd.associated || 2389 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2390 return 0; 2391 2392 ap = sdata->u.mgd.associated->bssid; 2393 2394 rcu_read_lock(); 2395 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2396 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2397 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2398 continue; 2399 2400 tdls_peer_found = true; 2401 break; 2402 } 2403 rcu_read_unlock(); 2404 2405 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2406 if (tdls_peer_found || !sdata->u.mgd.powersave) 2407 smps_mode = IEEE80211_SMPS_OFF; 2408 else 2409 smps_mode = IEEE80211_SMPS_DYNAMIC; 2410 } 2411 2412 /* send SM PS frame to AP */ 2413 err = ieee80211_send_smps_action(sdata, smps_mode, 2414 ap, ap); 2415 if (err) 2416 sdata->u.mgd.req_smps = old_req; 2417 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2418 ieee80211_teardown_tdls_peers(sdata); 2419 2420 return err; 2421 } 2422 2423 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2424 bool enabled, int timeout) 2425 { 2426 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2427 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2428 2429 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2430 return -EOPNOTSUPP; 2431 2432 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2433 return -EOPNOTSUPP; 2434 2435 if (enabled == sdata->u.mgd.powersave && 2436 timeout == local->dynamic_ps_forced_timeout) 2437 return 0; 2438 2439 sdata->u.mgd.powersave = enabled; 2440 local->dynamic_ps_forced_timeout = timeout; 2441 2442 /* no change, but if automatic follow powersave */ 2443 sdata_lock(sdata); 2444 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2445 sdata_unlock(sdata); 2446 2447 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2448 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2449 2450 ieee80211_recalc_ps(local); 2451 ieee80211_recalc_ps_vif(sdata); 2452 2453 return 0; 2454 } 2455 2456 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2457 struct net_device *dev, 2458 s32 rssi_thold, u32 rssi_hyst) 2459 { 2460 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2461 struct ieee80211_vif *vif = &sdata->vif; 2462 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 2463 2464 if (rssi_thold == bss_conf->cqm_rssi_thold && 2465 rssi_hyst == bss_conf->cqm_rssi_hyst) 2466 return 0; 2467 2468 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 2469 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 2470 return -EOPNOTSUPP; 2471 2472 bss_conf->cqm_rssi_thold = rssi_thold; 2473 bss_conf->cqm_rssi_hyst = rssi_hyst; 2474 sdata->u.mgd.last_cqm_event_signal = 0; 2475 2476 /* tell the driver upon association, unless already associated */ 2477 if (sdata->u.mgd.associated && 2478 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 2479 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 2480 2481 return 0; 2482 } 2483 2484 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 2485 struct net_device *dev, 2486 const u8 *addr, 2487 const struct cfg80211_bitrate_mask *mask) 2488 { 2489 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2490 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2491 int i, ret; 2492 2493 if (!ieee80211_sdata_running(sdata)) 2494 return -ENETDOWN; 2495 2496 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 2497 ret = drv_set_bitrate_mask(local, sdata, mask); 2498 if (ret) 2499 return ret; 2500 } 2501 2502 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 2503 struct ieee80211_supported_band *sband = wiphy->bands[i]; 2504 int j; 2505 2506 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 2507 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 2508 sizeof(mask->control[i].ht_mcs)); 2509 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 2510 mask->control[i].vht_mcs, 2511 sizeof(mask->control[i].vht_mcs)); 2512 2513 sdata->rc_has_mcs_mask[i] = false; 2514 sdata->rc_has_vht_mcs_mask[i] = false; 2515 if (!sband) 2516 continue; 2517 2518 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 2519 if (~sdata->rc_rateidx_mcs_mask[i][j]) { 2520 sdata->rc_has_mcs_mask[i] = true; 2521 break; 2522 } 2523 } 2524 2525 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 2526 if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { 2527 sdata->rc_has_vht_mcs_mask[i] = true; 2528 break; 2529 } 2530 } 2531 } 2532 2533 return 0; 2534 } 2535 2536 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 2537 struct net_device *dev, 2538 struct cfg80211_chan_def *chandef, 2539 u32 cac_time_ms) 2540 { 2541 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2542 struct ieee80211_local *local = sdata->local; 2543 int err; 2544 2545 mutex_lock(&local->mtx); 2546 if (!list_empty(&local->roc_list) || local->scanning) { 2547 err = -EBUSY; 2548 goto out_unlock; 2549 } 2550 2551 /* whatever, but channel contexts should not complain about that one */ 2552 sdata->smps_mode = IEEE80211_SMPS_OFF; 2553 sdata->needed_rx_chains = local->rx_chains; 2554 2555 err = ieee80211_vif_use_channel(sdata, chandef, 2556 IEEE80211_CHANCTX_SHARED); 2557 if (err) 2558 goto out_unlock; 2559 2560 ieee80211_queue_delayed_work(&sdata->local->hw, 2561 &sdata->dfs_cac_timer_work, 2562 msecs_to_jiffies(cac_time_ms)); 2563 2564 out_unlock: 2565 mutex_unlock(&local->mtx); 2566 return err; 2567 } 2568 2569 static struct cfg80211_beacon_data * 2570 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 2571 { 2572 struct cfg80211_beacon_data *new_beacon; 2573 u8 *pos; 2574 int len; 2575 2576 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 2577 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 2578 beacon->probe_resp_len; 2579 2580 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 2581 if (!new_beacon) 2582 return NULL; 2583 2584 pos = (u8 *)(new_beacon + 1); 2585 if (beacon->head_len) { 2586 new_beacon->head_len = beacon->head_len; 2587 new_beacon->head = pos; 2588 memcpy(pos, beacon->head, beacon->head_len); 2589 pos += beacon->head_len; 2590 } 2591 if (beacon->tail_len) { 2592 new_beacon->tail_len = beacon->tail_len; 2593 new_beacon->tail = pos; 2594 memcpy(pos, beacon->tail, beacon->tail_len); 2595 pos += beacon->tail_len; 2596 } 2597 if (beacon->beacon_ies_len) { 2598 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 2599 new_beacon->beacon_ies = pos; 2600 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 2601 pos += beacon->beacon_ies_len; 2602 } 2603 if (beacon->proberesp_ies_len) { 2604 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 2605 new_beacon->proberesp_ies = pos; 2606 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 2607 pos += beacon->proberesp_ies_len; 2608 } 2609 if (beacon->assocresp_ies_len) { 2610 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 2611 new_beacon->assocresp_ies = pos; 2612 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 2613 pos += beacon->assocresp_ies_len; 2614 } 2615 if (beacon->probe_resp_len) { 2616 new_beacon->probe_resp_len = beacon->probe_resp_len; 2617 beacon->probe_resp = pos; 2618 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 2619 pos += beacon->probe_resp_len; 2620 } 2621 2622 return new_beacon; 2623 } 2624 2625 void ieee80211_csa_finish(struct ieee80211_vif *vif) 2626 { 2627 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2628 2629 ieee80211_queue_work(&sdata->local->hw, 2630 &sdata->csa_finalize_work); 2631 } 2632 EXPORT_SYMBOL(ieee80211_csa_finish); 2633 2634 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 2635 u32 *changed) 2636 { 2637 int err; 2638 2639 switch (sdata->vif.type) { 2640 case NL80211_IFTYPE_AP: 2641 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 2642 NULL); 2643 kfree(sdata->u.ap.next_beacon); 2644 sdata->u.ap.next_beacon = NULL; 2645 2646 if (err < 0) 2647 return err; 2648 *changed |= err; 2649 break; 2650 case NL80211_IFTYPE_ADHOC: 2651 err = ieee80211_ibss_finish_csa(sdata); 2652 if (err < 0) 2653 return err; 2654 *changed |= err; 2655 break; 2656 #ifdef CONFIG_MAC80211_MESH 2657 case NL80211_IFTYPE_MESH_POINT: 2658 err = ieee80211_mesh_finish_csa(sdata); 2659 if (err < 0) 2660 return err; 2661 *changed |= err; 2662 break; 2663 #endif 2664 default: 2665 WARN_ON(1); 2666 return -EINVAL; 2667 } 2668 2669 return 0; 2670 } 2671 2672 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2673 { 2674 struct ieee80211_local *local = sdata->local; 2675 u32 changed = 0; 2676 int err; 2677 2678 sdata_assert_lock(sdata); 2679 lockdep_assert_held(&local->mtx); 2680 lockdep_assert_held(&local->chanctx_mtx); 2681 2682 /* 2683 * using reservation isn't immediate as it may be deferred until later 2684 * with multi-vif. once reservation is complete it will re-schedule the 2685 * work with no reserved_chanctx so verify chandef to check if it 2686 * completed successfully 2687 */ 2688 2689 if (sdata->reserved_chanctx) { 2690 /* 2691 * with multi-vif csa driver may call ieee80211_csa_finish() 2692 * many times while waiting for other interfaces to use their 2693 * reservations 2694 */ 2695 if (sdata->reserved_ready) 2696 return 0; 2697 2698 return ieee80211_vif_use_reserved_context(sdata); 2699 } 2700 2701 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 2702 &sdata->csa_chandef)) 2703 return -EINVAL; 2704 2705 sdata->vif.csa_active = false; 2706 2707 err = ieee80211_set_after_csa_beacon(sdata, &changed); 2708 if (err) 2709 return err; 2710 2711 ieee80211_bss_info_change_notify(sdata, changed); 2712 2713 if (sdata->csa_block_tx) { 2714 ieee80211_wake_vif_queues(local, sdata, 2715 IEEE80211_QUEUE_STOP_REASON_CSA); 2716 sdata->csa_block_tx = false; 2717 } 2718 2719 err = drv_post_channel_switch(sdata); 2720 if (err) 2721 return err; 2722 2723 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); 2724 2725 return 0; 2726 } 2727 2728 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 2729 { 2730 if (__ieee80211_csa_finalize(sdata)) { 2731 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 2732 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 2733 GFP_KERNEL); 2734 } 2735 } 2736 2737 void ieee80211_csa_finalize_work(struct work_struct *work) 2738 { 2739 struct ieee80211_sub_if_data *sdata = 2740 container_of(work, struct ieee80211_sub_if_data, 2741 csa_finalize_work); 2742 struct ieee80211_local *local = sdata->local; 2743 2744 sdata_lock(sdata); 2745 mutex_lock(&local->mtx); 2746 mutex_lock(&local->chanctx_mtx); 2747 2748 /* AP might have been stopped while waiting for the lock. */ 2749 if (!sdata->vif.csa_active) 2750 goto unlock; 2751 2752 if (!ieee80211_sdata_running(sdata)) 2753 goto unlock; 2754 2755 ieee80211_csa_finalize(sdata); 2756 2757 unlock: 2758 mutex_unlock(&local->chanctx_mtx); 2759 mutex_unlock(&local->mtx); 2760 sdata_unlock(sdata); 2761 } 2762 2763 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 2764 struct cfg80211_csa_settings *params, 2765 u32 *changed) 2766 { 2767 struct ieee80211_csa_settings csa = {}; 2768 int err; 2769 2770 switch (sdata->vif.type) { 2771 case NL80211_IFTYPE_AP: 2772 sdata->u.ap.next_beacon = 2773 cfg80211_beacon_dup(¶ms->beacon_after); 2774 if (!sdata->u.ap.next_beacon) 2775 return -ENOMEM; 2776 2777 /* 2778 * With a count of 0, we don't have to wait for any 2779 * TBTT before switching, so complete the CSA 2780 * immediately. In theory, with a count == 1 we 2781 * should delay the switch until just before the next 2782 * TBTT, but that would complicate things so we switch 2783 * immediately too. If we would delay the switch 2784 * until the next TBTT, we would have to set the probe 2785 * response here. 2786 * 2787 * TODO: A channel switch with count <= 1 without 2788 * sending a CSA action frame is kind of useless, 2789 * because the clients won't know we're changing 2790 * channels. The action frame must be implemented 2791 * either here or in the userspace. 2792 */ 2793 if (params->count <= 1) 2794 break; 2795 2796 if ((params->n_counter_offsets_beacon > 2797 IEEE80211_MAX_CSA_COUNTERS_NUM) || 2798 (params->n_counter_offsets_presp > 2799 IEEE80211_MAX_CSA_COUNTERS_NUM)) 2800 return -EINVAL; 2801 2802 csa.counter_offsets_beacon = params->counter_offsets_beacon; 2803 csa.counter_offsets_presp = params->counter_offsets_presp; 2804 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 2805 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 2806 csa.count = params->count; 2807 2808 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); 2809 if (err < 0) { 2810 kfree(sdata->u.ap.next_beacon); 2811 return err; 2812 } 2813 *changed |= err; 2814 2815 break; 2816 case NL80211_IFTYPE_ADHOC: 2817 if (!sdata->vif.bss_conf.ibss_joined) 2818 return -EINVAL; 2819 2820 if (params->chandef.width != sdata->u.ibss.chandef.width) 2821 return -EINVAL; 2822 2823 switch (params->chandef.width) { 2824 case NL80211_CHAN_WIDTH_40: 2825 if (cfg80211_get_chandef_type(¶ms->chandef) != 2826 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 2827 return -EINVAL; 2828 case NL80211_CHAN_WIDTH_5: 2829 case NL80211_CHAN_WIDTH_10: 2830 case NL80211_CHAN_WIDTH_20_NOHT: 2831 case NL80211_CHAN_WIDTH_20: 2832 break; 2833 default: 2834 return -EINVAL; 2835 } 2836 2837 /* changes into another band are not supported */ 2838 if (sdata->u.ibss.chandef.chan->band != 2839 params->chandef.chan->band) 2840 return -EINVAL; 2841 2842 /* see comments in the NL80211_IFTYPE_AP block */ 2843 if (params->count > 1) { 2844 err = ieee80211_ibss_csa_beacon(sdata, params); 2845 if (err < 0) 2846 return err; 2847 *changed |= err; 2848 } 2849 2850 ieee80211_send_action_csa(sdata, params); 2851 2852 break; 2853 #ifdef CONFIG_MAC80211_MESH 2854 case NL80211_IFTYPE_MESH_POINT: { 2855 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2856 2857 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 2858 return -EINVAL; 2859 2860 /* changes into another band are not supported */ 2861 if (sdata->vif.bss_conf.chandef.chan->band != 2862 params->chandef.chan->band) 2863 return -EINVAL; 2864 2865 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 2866 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 2867 if (!ifmsh->pre_value) 2868 ifmsh->pre_value = 1; 2869 else 2870 ifmsh->pre_value++; 2871 } 2872 2873 /* see comments in the NL80211_IFTYPE_AP block */ 2874 if (params->count > 1) { 2875 err = ieee80211_mesh_csa_beacon(sdata, params); 2876 if (err < 0) { 2877 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 2878 return err; 2879 } 2880 *changed |= err; 2881 } 2882 2883 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 2884 ieee80211_send_action_csa(sdata, params); 2885 2886 break; 2887 } 2888 #endif 2889 default: 2890 return -EOPNOTSUPP; 2891 } 2892 2893 return 0; 2894 } 2895 2896 static int 2897 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2898 struct cfg80211_csa_settings *params) 2899 { 2900 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2901 struct ieee80211_local *local = sdata->local; 2902 struct ieee80211_channel_switch ch_switch; 2903 struct ieee80211_chanctx_conf *conf; 2904 struct ieee80211_chanctx *chanctx; 2905 u32 changed = 0; 2906 int err; 2907 2908 sdata_assert_lock(sdata); 2909 lockdep_assert_held(&local->mtx); 2910 2911 if (!list_empty(&local->roc_list) || local->scanning) 2912 return -EBUSY; 2913 2914 if (sdata->wdev.cac_started) 2915 return -EBUSY; 2916 2917 if (cfg80211_chandef_identical(¶ms->chandef, 2918 &sdata->vif.bss_conf.chandef)) 2919 return -EINVAL; 2920 2921 /* don't allow another channel switch if one is already active. */ 2922 if (sdata->vif.csa_active) 2923 return -EBUSY; 2924 2925 mutex_lock(&local->chanctx_mtx); 2926 conf = rcu_dereference_protected(sdata->vif.chanctx_conf, 2927 lockdep_is_held(&local->chanctx_mtx)); 2928 if (!conf) { 2929 err = -EBUSY; 2930 goto out; 2931 } 2932 2933 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 2934 if (!chanctx) { 2935 err = -EBUSY; 2936 goto out; 2937 } 2938 2939 ch_switch.timestamp = 0; 2940 ch_switch.device_timestamp = 0; 2941 ch_switch.block_tx = params->block_tx; 2942 ch_switch.chandef = params->chandef; 2943 ch_switch.count = params->count; 2944 2945 err = drv_pre_channel_switch(sdata, &ch_switch); 2946 if (err) 2947 goto out; 2948 2949 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 2950 chanctx->mode, 2951 params->radar_required); 2952 if (err) 2953 goto out; 2954 2955 /* if reservation is invalid then this will fail */ 2956 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 2957 if (err) { 2958 ieee80211_vif_unreserve_chanctx(sdata); 2959 goto out; 2960 } 2961 2962 err = ieee80211_set_csa_beacon(sdata, params, &changed); 2963 if (err) { 2964 ieee80211_vif_unreserve_chanctx(sdata); 2965 goto out; 2966 } 2967 2968 sdata->csa_chandef = params->chandef; 2969 sdata->csa_block_tx = params->block_tx; 2970 sdata->vif.csa_active = true; 2971 2972 if (sdata->csa_block_tx) 2973 ieee80211_stop_vif_queues(local, sdata, 2974 IEEE80211_QUEUE_STOP_REASON_CSA); 2975 2976 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 2977 params->count); 2978 2979 if (changed) { 2980 ieee80211_bss_info_change_notify(sdata, changed); 2981 drv_channel_switch_beacon(sdata, ¶ms->chandef); 2982 } else { 2983 /* if the beacon didn't change, we can finalize immediately */ 2984 ieee80211_csa_finalize(sdata); 2985 } 2986 2987 out: 2988 mutex_unlock(&local->chanctx_mtx); 2989 return err; 2990 } 2991 2992 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2993 struct cfg80211_csa_settings *params) 2994 { 2995 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2996 struct ieee80211_local *local = sdata->local; 2997 int err; 2998 2999 mutex_lock(&local->mtx); 3000 err = __ieee80211_channel_switch(wiphy, dev, params); 3001 mutex_unlock(&local->mtx); 3002 3003 return err; 3004 } 3005 3006 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3007 { 3008 lockdep_assert_held(&local->mtx); 3009 3010 local->roc_cookie_counter++; 3011 3012 /* wow, you wrapped 64 bits ... more likely a bug */ 3013 if (WARN_ON(local->roc_cookie_counter == 0)) 3014 local->roc_cookie_counter++; 3015 3016 return local->roc_cookie_counter; 3017 } 3018 3019 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3020 u64 *cookie, gfp_t gfp) 3021 { 3022 unsigned long spin_flags; 3023 struct sk_buff *ack_skb; 3024 int id; 3025 3026 ack_skb = skb_copy(skb, gfp); 3027 if (!ack_skb) 3028 return -ENOMEM; 3029 3030 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3031 id = idr_alloc(&local->ack_status_frames, ack_skb, 3032 1, 0x10000, GFP_ATOMIC); 3033 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3034 3035 if (id < 0) { 3036 kfree_skb(ack_skb); 3037 return -ENOMEM; 3038 } 3039 3040 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3041 3042 *cookie = ieee80211_mgmt_tx_cookie(local); 3043 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3044 3045 return 0; 3046 } 3047 3048 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, 3049 struct wireless_dev *wdev, 3050 u16 frame_type, bool reg) 3051 { 3052 struct ieee80211_local *local = wiphy_priv(wiphy); 3053 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3054 3055 switch (frame_type) { 3056 case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: 3057 if (reg) { 3058 local->probe_req_reg++; 3059 sdata->vif.probe_req_reg++; 3060 } else { 3061 if (local->probe_req_reg) 3062 local->probe_req_reg--; 3063 3064 if (sdata->vif.probe_req_reg) 3065 sdata->vif.probe_req_reg--; 3066 } 3067 3068 if (!local->open_count) 3069 break; 3070 3071 if (sdata->vif.probe_req_reg == 1) 3072 drv_config_iface_filter(local, sdata, FIF_PROBE_REQ, 3073 FIF_PROBE_REQ); 3074 else if (sdata->vif.probe_req_reg == 0) 3075 drv_config_iface_filter(local, sdata, 0, 3076 FIF_PROBE_REQ); 3077 3078 ieee80211_configure_filter(local); 3079 break; 3080 default: 3081 break; 3082 } 3083 } 3084 3085 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3086 { 3087 struct ieee80211_local *local = wiphy_priv(wiphy); 3088 3089 if (local->started) 3090 return -EOPNOTSUPP; 3091 3092 return drv_set_antenna(local, tx_ant, rx_ant); 3093 } 3094 3095 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3096 { 3097 struct ieee80211_local *local = wiphy_priv(wiphy); 3098 3099 return drv_get_antenna(local, tx_ant, rx_ant); 3100 } 3101 3102 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3103 struct net_device *dev, 3104 struct cfg80211_gtk_rekey_data *data) 3105 { 3106 struct ieee80211_local *local = wiphy_priv(wiphy); 3107 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3108 3109 if (!local->ops->set_rekey_data) 3110 return -EOPNOTSUPP; 3111 3112 drv_set_rekey_data(local, sdata, data); 3113 3114 return 0; 3115 } 3116 3117 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3118 const u8 *peer, u64 *cookie) 3119 { 3120 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3121 struct ieee80211_local *local = sdata->local; 3122 struct ieee80211_qos_hdr *nullfunc; 3123 struct sk_buff *skb; 3124 int size = sizeof(*nullfunc); 3125 __le16 fc; 3126 bool qos; 3127 struct ieee80211_tx_info *info; 3128 struct sta_info *sta; 3129 struct ieee80211_chanctx_conf *chanctx_conf; 3130 enum ieee80211_band band; 3131 int ret; 3132 3133 /* the lock is needed to assign the cookie later */ 3134 mutex_lock(&local->mtx); 3135 3136 rcu_read_lock(); 3137 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3138 if (WARN_ON(!chanctx_conf)) { 3139 ret = -EINVAL; 3140 goto unlock; 3141 } 3142 band = chanctx_conf->def.chan->band; 3143 sta = sta_info_get_bss(sdata, peer); 3144 if (sta) { 3145 qos = sta->sta.wme; 3146 } else { 3147 ret = -ENOLINK; 3148 goto unlock; 3149 } 3150 3151 if (qos) { 3152 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3153 IEEE80211_STYPE_QOS_NULLFUNC | 3154 IEEE80211_FCTL_FROMDS); 3155 } else { 3156 size -= 2; 3157 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3158 IEEE80211_STYPE_NULLFUNC | 3159 IEEE80211_FCTL_FROMDS); 3160 } 3161 3162 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3163 if (!skb) { 3164 ret = -ENOMEM; 3165 goto unlock; 3166 } 3167 3168 skb->dev = dev; 3169 3170 skb_reserve(skb, local->hw.extra_tx_headroom); 3171 3172 nullfunc = (void *) skb_put(skb, size); 3173 nullfunc->frame_control = fc; 3174 nullfunc->duration_id = 0; 3175 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3176 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3177 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3178 nullfunc->seq_ctrl = 0; 3179 3180 info = IEEE80211_SKB_CB(skb); 3181 3182 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3183 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3184 info->band = band; 3185 3186 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3187 skb->priority = 7; 3188 if (qos) 3189 nullfunc->qos_ctrl = cpu_to_le16(7); 3190 3191 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3192 if (ret) { 3193 kfree_skb(skb); 3194 goto unlock; 3195 } 3196 3197 local_bh_disable(); 3198 ieee80211_xmit(sdata, sta, skb); 3199 local_bh_enable(); 3200 3201 ret = 0; 3202 unlock: 3203 rcu_read_unlock(); 3204 mutex_unlock(&local->mtx); 3205 3206 return ret; 3207 } 3208 3209 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3210 struct wireless_dev *wdev, 3211 struct cfg80211_chan_def *chandef) 3212 { 3213 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3214 struct ieee80211_local *local = wiphy_priv(wiphy); 3215 struct ieee80211_chanctx_conf *chanctx_conf; 3216 int ret = -ENODATA; 3217 3218 rcu_read_lock(); 3219 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 3220 if (chanctx_conf) { 3221 *chandef = sdata->vif.bss_conf.chandef; 3222 ret = 0; 3223 } else if (local->open_count > 0 && 3224 local->open_count == local->monitors && 3225 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3226 if (local->use_chanctx) 3227 *chandef = local->monitor_chandef; 3228 else 3229 *chandef = local->_oper_chandef; 3230 ret = 0; 3231 } 3232 rcu_read_unlock(); 3233 3234 return ret; 3235 } 3236 3237 #ifdef CONFIG_PM 3238 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3239 { 3240 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3241 } 3242 #endif 3243 3244 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3245 struct net_device *dev, 3246 struct cfg80211_qos_map *qos_map) 3247 { 3248 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3249 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3250 3251 if (qos_map) { 3252 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3253 if (!new_qos_map) 3254 return -ENOMEM; 3255 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3256 } else { 3257 /* A NULL qos_map was passed to disable QoS mapping */ 3258 new_qos_map = NULL; 3259 } 3260 3261 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3262 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3263 if (old_qos_map) 3264 kfree_rcu(old_qos_map, rcu_head); 3265 3266 return 0; 3267 } 3268 3269 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3270 struct net_device *dev, 3271 struct cfg80211_chan_def *chandef) 3272 { 3273 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3274 int ret; 3275 u32 changed = 0; 3276 3277 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3278 if (ret == 0) 3279 ieee80211_bss_info_change_notify(sdata, changed); 3280 3281 return ret; 3282 } 3283 3284 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3285 u8 tsid, const u8 *peer, u8 up, 3286 u16 admitted_time) 3287 { 3288 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3289 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3290 int ac = ieee802_1d_to_ac[up]; 3291 3292 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3293 return -EOPNOTSUPP; 3294 3295 if (!(sdata->wmm_acm & BIT(up))) 3296 return -EINVAL; 3297 3298 if (ifmgd->tx_tspec[ac].admitted_time) 3299 return -EBUSY; 3300 3301 if (admitted_time) { 3302 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3303 ifmgd->tx_tspec[ac].tsid = tsid; 3304 ifmgd->tx_tspec[ac].up = up; 3305 } 3306 3307 return 0; 3308 } 3309 3310 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3311 u8 tsid, const u8 *peer) 3312 { 3313 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3314 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3315 struct ieee80211_local *local = wiphy_priv(wiphy); 3316 int ac; 3317 3318 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 3319 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 3320 3321 /* skip unused entries */ 3322 if (!tx_tspec->admitted_time) 3323 continue; 3324 3325 if (tx_tspec->tsid != tsid) 3326 continue; 3327 3328 /* due to this new packets will be reassigned to non-ACM ACs */ 3329 tx_tspec->up = -1; 3330 3331 /* Make sure that all packets have been sent to avoid to 3332 * restore the QoS params on packets that are still on the 3333 * queues. 3334 */ 3335 synchronize_net(); 3336 ieee80211_flush_queues(local, sdata, false); 3337 3338 /* restore the normal QoS parameters 3339 * (unconditionally to avoid races) 3340 */ 3341 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 3342 tx_tspec->downgraded = false; 3343 ieee80211_sta_handle_tspec_ac_params(sdata); 3344 3345 /* finally clear all the data */ 3346 memset(tx_tspec, 0, sizeof(*tx_tspec)); 3347 3348 return 0; 3349 } 3350 3351 return -ENOENT; 3352 } 3353 3354 const struct cfg80211_ops mac80211_config_ops = { 3355 .add_virtual_intf = ieee80211_add_iface, 3356 .del_virtual_intf = ieee80211_del_iface, 3357 .change_virtual_intf = ieee80211_change_iface, 3358 .start_p2p_device = ieee80211_start_p2p_device, 3359 .stop_p2p_device = ieee80211_stop_p2p_device, 3360 .add_key = ieee80211_add_key, 3361 .del_key = ieee80211_del_key, 3362 .get_key = ieee80211_get_key, 3363 .set_default_key = ieee80211_config_default_key, 3364 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 3365 .start_ap = ieee80211_start_ap, 3366 .change_beacon = ieee80211_change_beacon, 3367 .stop_ap = ieee80211_stop_ap, 3368 .add_station = ieee80211_add_station, 3369 .del_station = ieee80211_del_station, 3370 .change_station = ieee80211_change_station, 3371 .get_station = ieee80211_get_station, 3372 .dump_station = ieee80211_dump_station, 3373 .dump_survey = ieee80211_dump_survey, 3374 #ifdef CONFIG_MAC80211_MESH 3375 .add_mpath = ieee80211_add_mpath, 3376 .del_mpath = ieee80211_del_mpath, 3377 .change_mpath = ieee80211_change_mpath, 3378 .get_mpath = ieee80211_get_mpath, 3379 .dump_mpath = ieee80211_dump_mpath, 3380 .get_mpp = ieee80211_get_mpp, 3381 .dump_mpp = ieee80211_dump_mpp, 3382 .update_mesh_config = ieee80211_update_mesh_config, 3383 .get_mesh_config = ieee80211_get_mesh_config, 3384 .join_mesh = ieee80211_join_mesh, 3385 .leave_mesh = ieee80211_leave_mesh, 3386 #endif 3387 .join_ocb = ieee80211_join_ocb, 3388 .leave_ocb = ieee80211_leave_ocb, 3389 .change_bss = ieee80211_change_bss, 3390 .set_txq_params = ieee80211_set_txq_params, 3391 .set_monitor_channel = ieee80211_set_monitor_channel, 3392 .suspend = ieee80211_suspend, 3393 .resume = ieee80211_resume, 3394 .scan = ieee80211_scan, 3395 .abort_scan = ieee80211_abort_scan, 3396 .sched_scan_start = ieee80211_sched_scan_start, 3397 .sched_scan_stop = ieee80211_sched_scan_stop, 3398 .auth = ieee80211_auth, 3399 .assoc = ieee80211_assoc, 3400 .deauth = ieee80211_deauth, 3401 .disassoc = ieee80211_disassoc, 3402 .join_ibss = ieee80211_join_ibss, 3403 .leave_ibss = ieee80211_leave_ibss, 3404 .set_mcast_rate = ieee80211_set_mcast_rate, 3405 .set_wiphy_params = ieee80211_set_wiphy_params, 3406 .set_tx_power = ieee80211_set_tx_power, 3407 .get_tx_power = ieee80211_get_tx_power, 3408 .set_wds_peer = ieee80211_set_wds_peer, 3409 .rfkill_poll = ieee80211_rfkill_poll, 3410 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 3411 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 3412 .set_power_mgmt = ieee80211_set_power_mgmt, 3413 .set_bitrate_mask = ieee80211_set_bitrate_mask, 3414 .remain_on_channel = ieee80211_remain_on_channel, 3415 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 3416 .mgmt_tx = ieee80211_mgmt_tx, 3417 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 3418 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 3419 .mgmt_frame_register = ieee80211_mgmt_frame_register, 3420 .set_antenna = ieee80211_set_antenna, 3421 .get_antenna = ieee80211_get_antenna, 3422 .set_rekey_data = ieee80211_set_rekey_data, 3423 .tdls_oper = ieee80211_tdls_oper, 3424 .tdls_mgmt = ieee80211_tdls_mgmt, 3425 .tdls_channel_switch = ieee80211_tdls_channel_switch, 3426 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 3427 .probe_client = ieee80211_probe_client, 3428 .set_noack_map = ieee80211_set_noack_map, 3429 #ifdef CONFIG_PM 3430 .set_wakeup = ieee80211_set_wakeup, 3431 #endif 3432 .get_channel = ieee80211_cfg_get_channel, 3433 .start_radar_detection = ieee80211_start_radar_detection, 3434 .channel_switch = ieee80211_channel_switch, 3435 .set_qos_map = ieee80211_set_qos_map, 3436 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 3437 .add_tx_ts = ieee80211_add_tx_ts, 3438 .del_tx_ts = ieee80211_del_tx_ts, 3439 }; 3440