1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 10 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 33 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 65 #include <linux/etherdevice.h> 66 #include <net/mac80211.h> 67 #include "iwl-io.h" 68 #include "iwl-prph.h" 69 #include "fw-api.h" 70 #include "mvm.h" 71 #include "time-event.h" 72 73 const u8 iwl_mvm_ac_to_tx_fifo[] = { 74 IWL_MVM_TX_FIFO_VO, 75 IWL_MVM_TX_FIFO_VI, 76 IWL_MVM_TX_FIFO_BE, 77 IWL_MVM_TX_FIFO_BK, 78 }; 79 80 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 81 IWL_GEN2_EDCA_TX_FIFO_VO, 82 IWL_GEN2_EDCA_TX_FIFO_VI, 83 IWL_GEN2_EDCA_TX_FIFO_BE, 84 IWL_GEN2_EDCA_TX_FIFO_BK, 85 IWL_GEN2_TRIG_TX_FIFO_VO, 86 IWL_GEN2_TRIG_TX_FIFO_VI, 87 IWL_GEN2_TRIG_TX_FIFO_BE, 88 IWL_GEN2_TRIG_TX_FIFO_BK, 89 }; 90 91 struct iwl_mvm_mac_iface_iterator_data { 92 struct iwl_mvm *mvm; 93 struct ieee80211_vif *vif; 94 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 95 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 96 enum iwl_tsf_id preferred_tsf; 97 bool found_vif; 98 }; 99 100 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 101 struct ieee80211_vif *vif) 102 { 103 struct iwl_mvm_mac_iface_iterator_data *data = _data; 104 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 105 u16 min_bi; 106 107 /* Skip the interface for which we are trying to assign a tsf_id */ 108 if (vif == data->vif) 109 return; 110 111 /* 112 * The TSF is a hardware/firmware resource, there are 4 and 113 * the driver should assign and free them as needed. However, 114 * there are cases where 2 MACs should share the same TSF ID 115 * for the purpose of clock sync, an optimization to avoid 116 * clock drift causing overlapping TBTTs/DTIMs for a GO and 117 * client in the system. 118 * 119 * The firmware will decide according to the MAC type which 120 * will be the master and slave. Clients that need to sync 121 * with a remote station will be the master, and an AP or GO 122 * will be the slave. 123 * 124 * Depending on the new interface type it can be slaved to 125 * or become the master of an existing interface. 126 */ 127 switch (data->vif->type) { 128 case NL80211_IFTYPE_STATION: 129 /* 130 * The new interface is a client, so if the one we're iterating 131 * is an AP, and the beacon interval of the AP is a multiple or 132 * divisor of the beacon interval of the client, the same TSF 133 * should be used to avoid drift between the new client and 134 * existing AP. The existing AP will get drift updates from the 135 * new client context in this case. 136 */ 137 if (vif->type != NL80211_IFTYPE_AP || 138 data->preferred_tsf != NUM_TSF_IDS || 139 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 140 break; 141 142 min_bi = min(data->vif->bss_conf.beacon_int, 143 vif->bss_conf.beacon_int); 144 145 if (!min_bi) 146 break; 147 148 if ((data->vif->bss_conf.beacon_int - 149 vif->bss_conf.beacon_int) % min_bi == 0) { 150 data->preferred_tsf = mvmvif->tsf_id; 151 return; 152 } 153 break; 154 155 case NL80211_IFTYPE_AP: 156 /* 157 * The new interface is AP/GO, so if its beacon interval is a 158 * multiple or a divisor of the beacon interval of an existing 159 * interface, it should get drift updates from an existing 160 * client or use the same TSF as an existing GO. There's no 161 * drift between TSFs internally but if they used different 162 * TSFs then a new client MAC could update one of them and 163 * cause drift that way. 164 */ 165 if ((vif->type != NL80211_IFTYPE_AP && 166 vif->type != NL80211_IFTYPE_STATION) || 167 data->preferred_tsf != NUM_TSF_IDS || 168 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 169 break; 170 171 min_bi = min(data->vif->bss_conf.beacon_int, 172 vif->bss_conf.beacon_int); 173 174 if (!min_bi) 175 break; 176 177 if ((data->vif->bss_conf.beacon_int - 178 vif->bss_conf.beacon_int) % min_bi == 0) { 179 data->preferred_tsf = mvmvif->tsf_id; 180 return; 181 } 182 break; 183 default: 184 /* 185 * For all other interface types there's no need to 186 * take drift into account. Either they're exclusive 187 * like IBSS and monitor, or we don't care much about 188 * their TSF (like P2P Device), but we won't be able 189 * to share the TSF resource. 190 */ 191 break; 192 } 193 194 /* 195 * Unless we exited above, we can't share the TSF resource 196 * that the virtual interface we're iterating over is using 197 * with the new one, so clear the available bit and if this 198 * was the preferred one, reset that as well. 199 */ 200 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 201 202 if (data->preferred_tsf == mvmvif->tsf_id) 203 data->preferred_tsf = NUM_TSF_IDS; 204 } 205 206 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 207 struct ieee80211_vif *vif) 208 { 209 struct iwl_mvm_mac_iface_iterator_data *data = _data; 210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 211 212 /* Iterator may already find the interface being added -- skip it */ 213 if (vif == data->vif) { 214 data->found_vif = true; 215 return; 216 } 217 218 /* Mark MAC IDs as used by clearing the available bit, and 219 * (below) mark TSFs as used if their existing use is not 220 * compatible with the new interface type. 221 * No locking or atomic bit operations are needed since the 222 * data is on the stack of the caller function. 223 */ 224 __clear_bit(mvmvif->id, data->available_mac_ids); 225 226 /* find a suitable tsf_id */ 227 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 228 } 229 230 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 231 struct ieee80211_vif *vif) 232 { 233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 234 struct iwl_mvm_mac_iface_iterator_data data = { 235 .mvm = mvm, 236 .vif = vif, 237 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 238 /* no preference yet */ 239 .preferred_tsf = NUM_TSF_IDS, 240 }; 241 242 ieee80211_iterate_active_interfaces_atomic( 243 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 244 iwl_mvm_mac_tsf_id_iter, &data); 245 246 if (data.preferred_tsf != NUM_TSF_IDS) 247 mvmvif->tsf_id = data.preferred_tsf; 248 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 249 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 250 NUM_TSF_IDS); 251 } 252 253 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 254 { 255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 256 struct iwl_mvm_mac_iface_iterator_data data = { 257 .mvm = mvm, 258 .vif = vif, 259 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 260 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 261 /* no preference yet */ 262 .preferred_tsf = NUM_TSF_IDS, 263 .found_vif = false, 264 }; 265 u32 ac; 266 int ret, i, queue_limit; 267 unsigned long used_hw_queues; 268 269 lockdep_assert_held(&mvm->mutex); 270 271 /* 272 * Allocate a MAC ID and a TSF for this MAC, along with the queues 273 * and other resources. 274 */ 275 276 /* 277 * Before the iterator, we start with all MAC IDs and TSFs available. 278 * 279 * During iteration, all MAC IDs are cleared that are in use by other 280 * virtual interfaces, and all TSF IDs are cleared that can't be used 281 * by this new virtual interface because they're used by an interface 282 * that can't share it with the new one. 283 * At the same time, we check if there's a preferred TSF in the case 284 * that we should share it with another interface. 285 */ 286 287 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 288 switch (vif->type) { 289 case NL80211_IFTYPE_ADHOC: 290 break; 291 case NL80211_IFTYPE_STATION: 292 if (!vif->p2p) 293 break; 294 /* fall through */ 295 default: 296 __clear_bit(0, data.available_mac_ids); 297 } 298 299 ieee80211_iterate_active_interfaces_atomic( 300 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 301 iwl_mvm_mac_iface_iterator, &data); 302 303 /* 304 * In the case we're getting here during resume, it's similar to 305 * firmware restart, and with RESUME_ALL the iterator will find 306 * the vif being added already. 307 * We don't want to reassign any IDs in either case since doing 308 * so would probably assign different IDs (as interfaces aren't 309 * necessarily added in the same order), but the old IDs were 310 * preserved anyway, so skip ID assignment for both resume and 311 * recovery. 312 */ 313 if (data.found_vif) 314 return 0; 315 316 /* Therefore, in recovery, we can't get here */ 317 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 318 return -EBUSY; 319 320 mvmvif->id = find_first_bit(data.available_mac_ids, 321 NUM_MAC_INDEX_DRIVER); 322 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 323 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 324 ret = -EIO; 325 goto exit_fail; 326 } 327 328 if (data.preferred_tsf != NUM_TSF_IDS) 329 mvmvif->tsf_id = data.preferred_tsf; 330 else 331 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 332 NUM_TSF_IDS); 333 if (mvmvif->tsf_id == NUM_TSF_IDS) { 334 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 335 ret = -EIO; 336 goto exit_fail; 337 } 338 339 mvmvif->color = 0; 340 341 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 342 mvmvif->time_event_data.id = TE_MAX; 343 344 /* No need to allocate data queues to P2P Device MAC.*/ 345 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 346 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 347 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; 348 349 return 0; 350 } 351 352 /* 353 * queues in mac80211 almost entirely independent of 354 * the ones here - no real limit 355 */ 356 queue_limit = IEEE80211_MAX_QUEUES; 357 358 /* 359 * Find available queues, and allocate them to the ACs. When in 360 * DQA-mode they aren't really used, and this is done only so the 361 * mac80211 ieee80211_check_queues() function won't fail 362 */ 363 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 364 u8 queue = find_first_zero_bit(&used_hw_queues, queue_limit); 365 366 if (queue >= queue_limit) { 367 IWL_ERR(mvm, "Failed to allocate queue\n"); 368 ret = -EIO; 369 goto exit_fail; 370 } 371 372 __set_bit(queue, &used_hw_queues); 373 vif->hw_queue[ac] = queue; 374 } 375 376 /* Allocate the CAB queue for softAP and GO interfaces */ 377 if (vif->type == NL80211_IFTYPE_AP || 378 vif->type == NL80211_IFTYPE_ADHOC) { 379 /* 380 * For TVQM this will be overwritten later with the FW assigned 381 * queue value (when queue is enabled). 382 */ 383 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 384 } 385 386 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; 387 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; 388 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 389 390 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 391 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 392 393 return 0; 394 395 exit_fail: 396 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 397 return ret; 398 } 399 400 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 401 struct ieee80211_vif *vif, 402 enum nl80211_band band, 403 u8 *cck_rates, u8 *ofdm_rates) 404 { 405 struct ieee80211_supported_band *sband; 406 unsigned long basic = vif->bss_conf.basic_rates; 407 int lowest_present_ofdm = 100; 408 int lowest_present_cck = 100; 409 u8 cck = 0; 410 u8 ofdm = 0; 411 int i; 412 413 sband = mvm->hw->wiphy->bands[band]; 414 415 for_each_set_bit(i, &basic, BITS_PER_LONG) { 416 int hw = sband->bitrates[i].hw_value; 417 if (hw >= IWL_FIRST_OFDM_RATE) { 418 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 419 if (lowest_present_ofdm > hw) 420 lowest_present_ofdm = hw; 421 } else { 422 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 423 424 cck |= BIT(hw); 425 if (lowest_present_cck > hw) 426 lowest_present_cck = hw; 427 } 428 } 429 430 /* 431 * Now we've got the basic rates as bitmaps in the ofdm and cck 432 * variables. This isn't sufficient though, as there might not 433 * be all the right rates in the bitmap. E.g. if the only basic 434 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 435 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 436 * 437 * [...] a STA responding to a received frame shall transmit 438 * its Control Response frame [...] at the highest rate in the 439 * BSSBasicRateSet parameter that is less than or equal to the 440 * rate of the immediately previous frame in the frame exchange 441 * sequence ([...]) and that is of the same modulation class 442 * ([...]) as the received frame. If no rate contained in the 443 * BSSBasicRateSet parameter meets these conditions, then the 444 * control frame sent in response to a received frame shall be 445 * transmitted at the highest mandatory rate of the PHY that is 446 * less than or equal to the rate of the received frame, and 447 * that is of the same modulation class as the received frame. 448 * 449 * As a consequence, we need to add all mandatory rates that are 450 * lower than all of the basic rates to these bitmaps. 451 */ 452 453 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 454 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 455 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 456 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 457 /* 6M already there or needed so always add */ 458 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 459 460 /* 461 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 462 * Note, however: 463 * - if no CCK rates are basic, it must be ERP since there must 464 * be some basic rates at all, so they're OFDM => ERP PHY 465 * (or we're in 5 GHz, and the cck bitmap will never be used) 466 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 467 * - if 5.5M is basic, 1M and 2M are mandatory 468 * - if 2M is basic, 1M is mandatory 469 * - if 1M is basic, that's the only valid ACK rate. 470 * As a consequence, it's not as complicated as it sounds, just add 471 * any lower rates to the ACK rate bitmap. 472 */ 473 if (IWL_RATE_11M_INDEX < lowest_present_cck) 474 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 475 if (IWL_RATE_5M_INDEX < lowest_present_cck) 476 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 477 if (IWL_RATE_2M_INDEX < lowest_present_cck) 478 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 479 /* 1M already there or needed so always add */ 480 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 481 482 *cck_rates = cck; 483 *ofdm_rates = ofdm; 484 } 485 486 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 487 struct ieee80211_vif *vif, 488 struct iwl_mac_ctx_cmd *cmd) 489 { 490 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 491 u8 protection_mode = vif->bss_conf.ht_operation_mode & 492 IEEE80211_HT_OP_MODE_PROTECTION; 493 /* The fw does not distinguish between ht and fat */ 494 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 495 496 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 497 /* 498 * See section 9.23.3.1 of IEEE 80211-2012. 499 * Nongreenfield HT STAs Present is not supported. 500 */ 501 switch (protection_mode) { 502 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 503 break; 504 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 505 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 506 cmd->protection_flags |= cpu_to_le32(ht_flag); 507 break; 508 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 509 /* Protect when channel wider than 20MHz */ 510 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 511 cmd->protection_flags |= cpu_to_le32(ht_flag); 512 break; 513 default: 514 IWL_ERR(mvm, "Illegal protection mode %d\n", 515 protection_mode); 516 break; 517 } 518 } 519 520 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 521 struct ieee80211_vif *vif, 522 struct iwl_mac_ctx_cmd *cmd, 523 const u8 *bssid_override, 524 u32 action) 525 { 526 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 527 struct ieee80211_chanctx_conf *chanctx; 528 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 529 IEEE80211_HT_OP_MODE_PROTECTION); 530 u8 cck_ack_rates, ofdm_ack_rates; 531 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 532 int i; 533 534 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 535 mvmvif->color)); 536 cmd->action = cpu_to_le32(action); 537 538 switch (vif->type) { 539 case NL80211_IFTYPE_STATION: 540 if (vif->p2p) 541 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 542 else 543 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 544 break; 545 case NL80211_IFTYPE_AP: 546 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 547 break; 548 case NL80211_IFTYPE_MONITOR: 549 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 550 break; 551 case NL80211_IFTYPE_P2P_DEVICE: 552 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 553 break; 554 case NL80211_IFTYPE_ADHOC: 555 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 556 break; 557 default: 558 WARN_ON_ONCE(1); 559 } 560 561 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 562 563 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 564 565 if (bssid) 566 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 567 else 568 eth_broadcast_addr(cmd->bssid_addr); 569 570 rcu_read_lock(); 571 chanctx = rcu_dereference(vif->chanctx_conf); 572 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 573 : NL80211_BAND_2GHZ, 574 &cck_ack_rates, &ofdm_ack_rates); 575 rcu_read_unlock(); 576 577 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 578 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 579 580 cmd->cck_short_preamble = 581 cpu_to_le32(vif->bss_conf.use_short_preamble ? 582 MAC_FLG_SHORT_PREAMBLE : 0); 583 cmd->short_slot = 584 cpu_to_le32(vif->bss_conf.use_short_slot ? 585 MAC_FLG_SHORT_SLOT : 0); 586 587 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 588 589 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 590 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 591 592 cmd->ac[txf].cw_min = 593 cpu_to_le16(mvmvif->queue_params[i].cw_min); 594 cmd->ac[txf].cw_max = 595 cpu_to_le16(mvmvif->queue_params[i].cw_max); 596 cmd->ac[txf].edca_txop = 597 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 598 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; 599 cmd->ac[txf].fifos_mask = BIT(txf); 600 } 601 602 if (vif->bss_conf.qos) 603 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 604 605 if (vif->bss_conf.use_cts_prot) 606 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 607 608 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 609 vif->bss_conf.use_cts_prot, 610 vif->bss_conf.ht_operation_mode); 611 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 612 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 613 if (ht_enabled) 614 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 615 } 616 617 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 618 struct iwl_mac_ctx_cmd *cmd) 619 { 620 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 621 sizeof(*cmd), cmd); 622 if (ret) 623 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 624 le32_to_cpu(cmd->action), ret); 625 return ret; 626 } 627 628 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 629 struct ieee80211_vif *vif, 630 u32 action, bool force_assoc_off, 631 const u8 *bssid_override) 632 { 633 struct iwl_mac_ctx_cmd cmd = {}; 634 struct iwl_mac_data_sta *ctxt_sta; 635 636 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 637 638 /* Fill the common data for all mac context types */ 639 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 640 641 if (vif->p2p) { 642 struct ieee80211_p2p_noa_attr *noa = 643 &vif->bss_conf.p2p_noa_attr; 644 645 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 646 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 647 ctxt_sta = &cmd.p2p_sta.sta; 648 } else { 649 ctxt_sta = &cmd.sta; 650 } 651 652 /* We need the dtim_period to set the MAC as associated */ 653 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && 654 !force_assoc_off) { 655 u32 dtim_offs; 656 657 /* 658 * The DTIM count counts down, so when it is N that means N 659 * more beacon intervals happen until the DTIM TBTT. Therefore 660 * add this to the current time. If that ends up being in the 661 * future, the firmware will handle it. 662 * 663 * Also note that the system_timestamp (which we get here as 664 * "sync_device_ts") and TSF timestamp aren't at exactly the 665 * same offset in the frame -- the TSF is at the first symbol 666 * of the TSF, the system timestamp is at signal acquisition 667 * time. This means there's an offset between them of at most 668 * a few hundred microseconds (24 * 8 bits + PLCP time gives 669 * 384us in the longest case), this is currently not relevant 670 * as the firmware wakes up around 2ms before the TBTT. 671 */ 672 dtim_offs = vif->bss_conf.sync_dtim_count * 673 vif->bss_conf.beacon_int; 674 /* convert TU to usecs */ 675 dtim_offs *= 1024; 676 677 ctxt_sta->dtim_tsf = 678 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 679 ctxt_sta->dtim_time = 680 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 681 ctxt_sta->assoc_beacon_arrive_time = 682 cpu_to_le32(vif->bss_conf.sync_device_ts); 683 684 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 685 le64_to_cpu(ctxt_sta->dtim_tsf), 686 le32_to_cpu(ctxt_sta->dtim_time), 687 dtim_offs); 688 689 ctxt_sta->is_assoc = cpu_to_le32(1); 690 } else { 691 ctxt_sta->is_assoc = cpu_to_le32(0); 692 693 /* Allow beacons to pass through as long as we are not 694 * associated, or we do not have dtim period information. 695 */ 696 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 697 } 698 699 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 700 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 701 vif->bss_conf.dtim_period); 702 703 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 704 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); 705 706 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) 707 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 708 709 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 710 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 711 if (vif->bss_conf.twt_requester) 712 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED); 713 } 714 715 716 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 717 } 718 719 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 720 struct ieee80211_vif *vif, 721 u32 action) 722 { 723 struct iwl_mac_ctx_cmd cmd = {}; 724 u32 tfd_queue_msk = BIT(mvm->snif_queue); 725 int ret; 726 727 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 728 729 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 730 731 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 732 MAC_FILTER_IN_CONTROL_AND_MGMT | 733 MAC_FILTER_IN_BEACON | 734 MAC_FILTER_IN_PROBE_REQUEST | 735 MAC_FILTER_IN_CRC32); 736 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 737 738 /* Allocate sniffer station */ 739 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 740 vif->type, IWL_STA_GENERAL_PURPOSE); 741 if (ret) 742 return ret; 743 744 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 745 } 746 747 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 748 struct ieee80211_vif *vif, 749 u32 action) 750 { 751 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 752 struct iwl_mac_ctx_cmd cmd = {}; 753 754 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 755 756 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 757 758 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 759 MAC_FILTER_IN_PROBE_REQUEST); 760 761 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 762 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 763 764 /* TODO: Assumes that the beacon id == mac context id */ 765 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 766 767 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 768 } 769 770 struct iwl_mvm_go_iterator_data { 771 bool go_active; 772 }; 773 774 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 775 { 776 struct iwl_mvm_go_iterator_data *data = _data; 777 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 778 779 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 780 mvmvif->ap_ibss_active) 781 data->go_active = true; 782 } 783 784 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 785 struct ieee80211_vif *vif, 786 u32 action) 787 { 788 struct iwl_mac_ctx_cmd cmd = {}; 789 struct iwl_mvm_go_iterator_data data = {}; 790 791 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 792 793 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 794 795 /* Override the filter flags to accept only probe requests */ 796 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 797 798 /* 799 * This flag should be set to true when the P2P Device is 800 * discoverable and there is at least another active P2P GO. Settings 801 * this flag will allow the P2P Device to be discoverable on other 802 * channels in addition to its listen channel. 803 * Note that this flag should not be set in other cases as it opens the 804 * Rx filters on all MAC and increases the number of interrupts. 805 */ 806 ieee80211_iterate_active_interfaces_atomic( 807 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 808 iwl_mvm_go_iterator, &data); 809 810 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); 811 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 812 } 813 814 void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 815 __le32 *tim_index, __le32 *tim_size, 816 u8 *beacon, u32 frame_size) 817 { 818 u32 tim_idx; 819 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 820 821 /* The index is relative to frame start but we start looking at the 822 * variable-length part of the beacon. */ 823 tim_idx = mgmt->u.beacon.variable - beacon; 824 825 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 826 while ((tim_idx < (frame_size - 2)) && 827 (beacon[tim_idx] != WLAN_EID_TIM)) 828 tim_idx += beacon[tim_idx+1] + 2; 829 830 /* If TIM field was found, set variables */ 831 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 832 *tim_index = cpu_to_le32(tim_idx); 833 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 834 } else { 835 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 836 } 837 } 838 839 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 840 { 841 struct ieee80211_mgmt *mgmt = (void *)beacon; 842 const u8 *ie; 843 844 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 845 return 0; 846 847 frame_size -= mgmt->u.beacon.variable - beacon; 848 849 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 850 if (!ie) 851 return 0; 852 853 return ie - beacon; 854 } 855 856 u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, 857 struct ieee80211_vif *vif) 858 { 859 u8 rate; 860 861 if (info->band == NL80211_BAND_5GHZ || vif->p2p) 862 rate = IWL_FIRST_OFDM_RATE; 863 else 864 rate = IWL_FIRST_CCK_RATE; 865 866 return rate; 867 } 868 869 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 870 struct ieee80211_vif *vif, 871 struct sk_buff *beacon, 872 struct iwl_tx_cmd *tx) 873 { 874 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 875 struct ieee80211_tx_info *info; 876 u8 rate; 877 u32 tx_flags; 878 879 info = IEEE80211_SKB_CB(beacon); 880 881 /* Set up TX command fields */ 882 tx->len = cpu_to_le16((u16)beacon->len); 883 tx->sta_id = mvmvif->bcast_sta.sta_id; 884 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 885 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 886 tx_flags |= 887 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 888 TX_CMD_FLG_BT_PRIO_POS; 889 tx->tx_flags = cpu_to_le32(tx_flags); 890 891 if (!fw_has_capa(&mvm->fw->ucode_capa, 892 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 893 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 894 895 tx->rate_n_flags = 896 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 897 RATE_MCS_ANT_POS); 898 899 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 900 901 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); 902 if (rate == IWL_FIRST_CCK_RATE) 903 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); 904 905 } 906 907 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 908 struct sk_buff *beacon, 909 void *data, int len) 910 { 911 struct iwl_host_cmd cmd = { 912 .id = BEACON_TEMPLATE_CMD, 913 .flags = CMD_ASYNC, 914 }; 915 916 cmd.len[0] = len; 917 cmd.data[0] = data; 918 cmd.dataflags[0] = 0; 919 cmd.len[1] = beacon->len; 920 cmd.data[1] = beacon->data; 921 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 922 923 return iwl_mvm_send_cmd(mvm, &cmd); 924 } 925 926 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 927 struct ieee80211_vif *vif, 928 struct sk_buff *beacon) 929 { 930 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 931 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 932 933 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 934 935 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 936 937 if (vif->type == NL80211_IFTYPE_AP) 938 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 939 &beacon_cmd.tim_size, 940 beacon->data, beacon->len); 941 942 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 943 sizeof(beacon_cmd)); 944 } 945 946 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 947 struct ieee80211_vif *vif, 948 struct sk_buff *beacon) 949 { 950 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 951 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 952 953 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 954 955 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 956 957 if (vif->type == NL80211_IFTYPE_AP) 958 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 959 &beacon_cmd.tim_size, 960 beacon->data, beacon->len); 961 962 beacon_cmd.csa_offset = 963 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 964 WLAN_EID_CHANNEL_SWITCH, 965 beacon->len)); 966 beacon_cmd.ecsa_offset = 967 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 968 WLAN_EID_EXT_CHANSWITCH_ANN, 969 beacon->len)); 970 971 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 972 sizeof(beacon_cmd)); 973 } 974 975 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 976 struct ieee80211_vif *vif, 977 struct sk_buff *beacon) 978 { 979 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 980 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 981 struct iwl_mac_beacon_cmd beacon_cmd = {}; 982 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 983 u16 flags; 984 985 flags = iwl_mvm_mac80211_idx_to_hwrate(rate); 986 987 if (rate == IWL_FIRST_CCK_RATE) 988 flags |= IWL_MAC_BEACON_CCK; 989 990 beacon_cmd.flags = cpu_to_le16(flags); 991 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 992 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 993 994 if (vif->type == NL80211_IFTYPE_AP) 995 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 996 &beacon_cmd.tim_size, 997 beacon->data, beacon->len); 998 999 beacon_cmd.csa_offset = 1000 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1001 WLAN_EID_CHANNEL_SWITCH, 1002 beacon->len)); 1003 beacon_cmd.ecsa_offset = 1004 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1005 WLAN_EID_EXT_CHANSWITCH_ANN, 1006 beacon->len)); 1007 1008 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1009 sizeof(beacon_cmd)); 1010 } 1011 1012 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1013 struct ieee80211_vif *vif, 1014 struct sk_buff *beacon) 1015 { 1016 if (WARN_ON(!beacon)) 1017 return -EINVAL; 1018 1019 if (IWL_MVM_NON_TRANSMITTING_AP) 1020 return 0; 1021 1022 if (!fw_has_capa(&mvm->fw->ucode_capa, 1023 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1024 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1025 1026 if (fw_has_api(&mvm->fw->ucode_capa, 1027 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1028 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); 1029 1030 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1031 } 1032 1033 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1034 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1035 struct ieee80211_vif *vif) 1036 { 1037 struct sk_buff *beacon; 1038 int ret; 1039 1040 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1041 vif->type != NL80211_IFTYPE_ADHOC); 1042 1043 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); 1044 if (!beacon) 1045 return -ENOMEM; 1046 1047 #ifdef CONFIG_IWLWIFI_DEBUGFS 1048 if (mvm->beacon_inject_active) 1049 return -EBUSY; 1050 #endif 1051 1052 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 1053 dev_kfree_skb(beacon); 1054 return ret; 1055 } 1056 1057 struct iwl_mvm_mac_ap_iterator_data { 1058 struct iwl_mvm *mvm; 1059 struct ieee80211_vif *vif; 1060 u32 beacon_device_ts; 1061 u16 beacon_int; 1062 }; 1063 1064 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1065 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1066 struct ieee80211_vif *vif) 1067 { 1068 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1069 1070 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) 1071 return; 1072 1073 /* Station client has higher priority over P2P client*/ 1074 if (vif->p2p && data->beacon_device_ts) 1075 return; 1076 1077 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1078 data->beacon_int = vif->bss_conf.beacon_int; 1079 } 1080 1081 /* 1082 * Fill the specific data for mac context of type AP of P2P GO 1083 */ 1084 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1085 struct ieee80211_vif *vif, 1086 struct iwl_mac_ctx_cmd *cmd, 1087 struct iwl_mac_data_ap *ctxt_ap, 1088 bool add) 1089 { 1090 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1091 struct iwl_mvm_mac_ap_iterator_data data = { 1092 .mvm = mvm, 1093 .vif = vif, 1094 .beacon_device_ts = 0 1095 }; 1096 1097 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1098 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1099 1100 /* 1101 * in AP mode, pass probe requests and beacons from other APs 1102 * (needed for ht protection); when there're no any associated 1103 * station don't ask FW to pass beacons to prevent unnecessary 1104 * wake-ups. 1105 */ 1106 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1107 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1108 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 1109 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1110 } else { 1111 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1112 } 1113 1114 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) 1115 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 1116 1117 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1118 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1119 vif->bss_conf.dtim_period); 1120 1121 if (!fw_has_api(&mvm->fw->ucode_capa, 1122 IWL_UCODE_TLV_API_STA_TYPE)) 1123 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue); 1124 1125 /* 1126 * Only set the beacon time when the MAC is being added, when we 1127 * just modify the MAC then we should keep the time -- the firmware 1128 * can otherwise have a "jumping" TBTT. 1129 */ 1130 if (add) { 1131 /* 1132 * If there is a station/P2P client interface which is 1133 * associated, set the AP's TBTT far enough from the station's 1134 * TBTT. Otherwise, set it to the current system time 1135 */ 1136 ieee80211_iterate_active_interfaces_atomic( 1137 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1138 iwl_mvm_mac_ap_iterator, &data); 1139 1140 if (data.beacon_device_ts) { 1141 u32 rand = (prandom_u32() % (64 - 36)) + 36; 1142 mvmvif->ap_beacon_time = data.beacon_device_ts + 1143 ieee80211_tu_to_usec(data.beacon_int * rand / 1144 100); 1145 } else { 1146 mvmvif->ap_beacon_time = 1147 iwl_read_prph(mvm->trans, 1148 DEVICE_SYSTEM_TIME_REG); 1149 } 1150 } 1151 1152 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1153 ctxt_ap->beacon_tsf = 0; /* unused */ 1154 1155 /* TODO: Assume that the beacon id == mac context id */ 1156 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1157 } 1158 1159 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1160 struct ieee80211_vif *vif, 1161 u32 action) 1162 { 1163 struct iwl_mac_ctx_cmd cmd = {}; 1164 1165 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1166 1167 /* Fill the common data for all mac context types */ 1168 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1169 1170 /* Fill the data specific for ap mode */ 1171 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1172 action == FW_CTXT_ACTION_ADD); 1173 1174 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1175 } 1176 1177 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1178 struct ieee80211_vif *vif, 1179 u32 action) 1180 { 1181 struct iwl_mac_ctx_cmd cmd = {}; 1182 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1183 1184 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1185 1186 /* Fill the common data for all mac context types */ 1187 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1188 1189 /* Fill the data specific for GO mode */ 1190 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1191 action == FW_CTXT_ACTION_ADD); 1192 1193 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1194 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1195 cmd.go.opp_ps_enabled = 1196 cpu_to_le32(!!(noa->oppps_ctwindow & 1197 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1198 1199 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1200 } 1201 1202 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1203 u32 action, bool force_assoc_off, 1204 const u8 *bssid_override) 1205 { 1206 switch (vif->type) { 1207 case NL80211_IFTYPE_STATION: 1208 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1209 force_assoc_off, 1210 bssid_override); 1211 break; 1212 case NL80211_IFTYPE_AP: 1213 if (!vif->p2p) 1214 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1215 else 1216 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1217 break; 1218 case NL80211_IFTYPE_MONITOR: 1219 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1220 case NL80211_IFTYPE_P2P_DEVICE: 1221 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1222 case NL80211_IFTYPE_ADHOC: 1223 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1224 default: 1225 break; 1226 } 1227 1228 return -EOPNOTSUPP; 1229 } 1230 1231 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1232 { 1233 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1234 int ret; 1235 1236 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1237 vif->addr, ieee80211_vif_type_p2p(vif))) 1238 return -EIO; 1239 1240 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1241 true, NULL); 1242 if (ret) 1243 return ret; 1244 1245 /* will only do anything at resume from D3 time */ 1246 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1247 1248 mvmvif->uploaded = true; 1249 return 0; 1250 } 1251 1252 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1253 bool force_assoc_off, const u8 *bssid_override) 1254 { 1255 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1256 1257 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1258 vif->addr, ieee80211_vif_type_p2p(vif))) 1259 return -EIO; 1260 1261 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1262 force_assoc_off, bssid_override); 1263 } 1264 1265 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1266 { 1267 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1268 struct iwl_mac_ctx_cmd cmd; 1269 int ret; 1270 1271 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1272 vif->addr, ieee80211_vif_type_p2p(vif))) 1273 return -EIO; 1274 1275 memset(&cmd, 0, sizeof(cmd)); 1276 1277 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1278 mvmvif->color)); 1279 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1280 1281 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 1282 sizeof(cmd), &cmd); 1283 if (ret) { 1284 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1285 return ret; 1286 } 1287 1288 mvmvif->uploaded = false; 1289 1290 if (vif->type == NL80211_IFTYPE_MONITOR) { 1291 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1292 iwl_mvm_dealloc_snif_sta(mvm); 1293 } 1294 1295 return 0; 1296 } 1297 1298 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1299 struct ieee80211_vif *csa_vif, u32 gp2, 1300 bool tx_success) 1301 { 1302 struct iwl_mvm_vif *mvmvif = 1303 iwl_mvm_vif_from_mac80211(csa_vif); 1304 1305 /* Don't start to countdown from a failed beacon */ 1306 if (!tx_success && !mvmvif->csa_countdown) 1307 return; 1308 1309 mvmvif->csa_countdown = true; 1310 1311 if (!ieee80211_csa_is_complete(csa_vif)) { 1312 int c = ieee80211_csa_update_counter(csa_vif); 1313 1314 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); 1315 if (csa_vif->p2p && 1316 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1317 tx_success) { 1318 u32 rel_time = (c + 1) * 1319 csa_vif->bss_conf.beacon_int - 1320 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1321 u32 apply_time = gp2 + rel_time * 1024; 1322 1323 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1324 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1325 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1326 apply_time); 1327 } 1328 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1329 /* we don't have CSA NoA scheduled yet, switch now */ 1330 ieee80211_csa_finish(csa_vif); 1331 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1332 } 1333 } 1334 1335 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1336 struct iwl_rx_cmd_buffer *rxb) 1337 { 1338 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1339 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1340 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1341 struct ieee80211_vif *csa_vif; 1342 struct ieee80211_vif *tx_blocked_vif; 1343 struct agg_tx_status *agg_status; 1344 u16 status; 1345 1346 lockdep_assert_held(&mvm->mutex); 1347 1348 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1349 1350 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1351 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1352 &beacon_v5->beacon_notify_hdr; 1353 1354 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1355 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1356 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1357 IWL_DEBUG_RX(mvm, 1358 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1359 status, beacon_notify_hdr->failure_frame, 1360 le64_to_cpu(beacon->tsf), 1361 mvm->ap_last_beacon_gp2, 1362 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1363 } else { 1364 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1365 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1366 IWL_DEBUG_RX(mvm, 1367 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1368 status, le64_to_cpu(beacon->tsf), 1369 mvm->ap_last_beacon_gp2); 1370 } 1371 1372 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1373 lockdep_is_held(&mvm->mutex)); 1374 if (unlikely(csa_vif && csa_vif->csa_active)) 1375 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1376 (status == TX_STATUS_SUCCESS)); 1377 1378 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1379 lockdep_is_held(&mvm->mutex)); 1380 if (unlikely(tx_blocked_vif)) { 1381 struct iwl_mvm_vif *mvmvif = 1382 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1383 1384 /* 1385 * The channel switch is started and we have blocked the 1386 * stations. If this is the first beacon (the timeout wasn't 1387 * set), set the unblock timeout, otherwise countdown 1388 */ 1389 if (!mvm->csa_tx_block_bcn_timeout) 1390 mvm->csa_tx_block_bcn_timeout = 1391 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1392 else 1393 mvm->csa_tx_block_bcn_timeout--; 1394 1395 /* Check if the timeout is expired, and unblock tx */ 1396 if (mvm->csa_tx_block_bcn_timeout == 0) { 1397 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1398 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1399 } 1400 } 1401 } 1402 1403 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1404 struct iwl_rx_cmd_buffer *rxb) 1405 { 1406 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1407 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1408 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1409 struct iwl_fw_dbg_trigger_tlv *trigger; 1410 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1411 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1412 struct ieee80211_vif *vif; 1413 u32 id = le32_to_cpu(mb->mac_id); 1414 1415 IWL_DEBUG_INFO(mvm, 1416 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1417 le32_to_cpu(mb->mac_id), 1418 le32_to_cpu(mb->consec_missed_beacons), 1419 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1420 le32_to_cpu(mb->num_recvd_beacons), 1421 le32_to_cpu(mb->num_expected_beacons)); 1422 1423 rcu_read_lock(); 1424 1425 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1426 if (!vif) 1427 goto out; 1428 1429 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1430 rx_missed_bcon_since_rx = 1431 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1432 /* 1433 * TODO: the threshold should be adjusted based on latency conditions, 1434 * and/or in case of a CS flow on one of the other AP vifs. 1435 */ 1436 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1437 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1438 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1439 ieee80211_beacon_loss(vif); 1440 1441 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1442 FW_DBG_TRIGGER_MISSED_BEACONS); 1443 if (!trigger) 1444 goto out; 1445 1446 bcon_trig = (void *)trigger->data; 1447 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1448 stop_trig_missed_bcon_since_rx = 1449 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1450 1451 /* TODO: implement start trigger */ 1452 1453 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1454 rx_missed_bcon >= stop_trig_missed_bcon) 1455 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1456 1457 iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_MISSED_BEACONS); 1458 1459 out: 1460 rcu_read_unlock(); 1461 } 1462 1463 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1464 struct iwl_rx_cmd_buffer *rxb) 1465 { 1466 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1467 struct iwl_stored_beacon_notif *sb = (void *)pkt->data; 1468 struct ieee80211_rx_status rx_status; 1469 struct sk_buff *skb; 1470 u32 size = le32_to_cpu(sb->byte_count); 1471 1472 if (size == 0) 1473 return; 1474 1475 skb = alloc_skb(size, GFP_ATOMIC); 1476 if (!skb) { 1477 IWL_ERR(mvm, "alloc_skb failed\n"); 1478 return; 1479 } 1480 1481 /* update rx_status according to the notification's metadata */ 1482 memset(&rx_status, 0, sizeof(rx_status)); 1483 rx_status.mactime = le64_to_cpu(sb->tsf); 1484 /* TSF as indicated by the firmware is at INA time */ 1485 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1486 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1487 rx_status.band = 1488 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1489 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1490 rx_status.freq = 1491 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1492 rx_status.band); 1493 1494 /* copy the data */ 1495 skb_put_data(skb, sb->data, size); 1496 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1497 1498 /* pass it as regular rx to mac80211 */ 1499 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1500 } 1501 1502 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1503 struct iwl_rx_cmd_buffer *rxb) 1504 { 1505 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1506 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1507 struct iwl_probe_resp_data *old_data, *new_data; 1508 int len = iwl_rx_packet_payload_len(pkt); 1509 u32 id = le32_to_cpu(notif->mac_id); 1510 struct ieee80211_vif *vif; 1511 struct iwl_mvm_vif *mvmvif; 1512 1513 if (WARN_ON_ONCE(len < sizeof(*notif))) 1514 return; 1515 1516 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1517 notif->noa_active, notif->csa_counter); 1518 1519 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1520 if (!vif) 1521 return; 1522 1523 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1524 1525 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1526 if (!new_data) 1527 return; 1528 1529 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1530 1531 /* noa_attr contains 1 reserved byte, need to substruct it */ 1532 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1533 sizeof(new_data->notif.noa_attr) - 1; 1534 1535 /* 1536 * If it's a one time NoA, only one descriptor is needed, 1537 * adjust the length according to len_low. 1538 */ 1539 if (new_data->notif.noa_attr.len_low == 1540 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1541 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1542 1543 old_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1544 lockdep_is_held(&mvmvif->mvm->mutex)); 1545 rcu_assign_pointer(mvmvif->probe_resp_data, new_data); 1546 1547 if (old_data) 1548 kfree_rcu(old_data, rcu_head); 1549 1550 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1551 notif->csa_counter >= 1) 1552 ieee80211_csa_set_counter(vif, notif->csa_counter); 1553 } 1554 1555 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, 1556 struct iwl_rx_cmd_buffer *rxb) 1557 { 1558 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1559 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data; 1560 struct ieee80211_vif *csa_vif, *vif; 1561 struct iwl_mvm_vif *mvmvif; 1562 int len = iwl_rx_packet_payload_len(pkt); 1563 u32 id_n_color, csa_id, mac_id; 1564 1565 if (WARN_ON_ONCE(len < sizeof(*notif))) 1566 return; 1567 1568 id_n_color = le32_to_cpu(notif->id_and_color); 1569 mac_id = id_n_color & FW_CTXT_ID_MSK; 1570 1571 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER)) 1572 return; 1573 1574 rcu_read_lock(); 1575 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]); 1576 1577 switch (vif->type) { 1578 case NL80211_IFTYPE_AP: 1579 csa_vif = rcu_dereference(mvm->csa_vif); 1580 if (WARN_ON(!csa_vif || !csa_vif->csa_active || 1581 csa_vif != vif)) 1582 goto out_unlock; 1583 1584 mvmvif = iwl_mvm_vif_from_mac80211(csa_vif); 1585 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1586 if (WARN(csa_id != id_n_color, 1587 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1588 csa_id, id_n_color)) 1589 goto out_unlock; 1590 1591 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1592 1593 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1594 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1595 csa_vif->bss_conf.beacon_int)); 1596 1597 ieee80211_csa_finish(csa_vif); 1598 1599 rcu_read_unlock(); 1600 1601 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1602 return; 1603 case NL80211_IFTYPE_STATION: 1604 iwl_mvm_csa_client_absent(mvm, vif); 1605 ieee80211_chswitch_done(vif, true); 1606 break; 1607 default: 1608 /* should never happen */ 1609 WARN_ON_ONCE(1); 1610 break; 1611 } 1612 out_unlock: 1613 rcu_read_unlock(); 1614 } 1615