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) 2013 - 2014 Intel Mobile Communications GmbH 9 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 10 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of version 2 of the GNU General Public License as 14 * published by the Free Software Foundation. 15 * 16 * This program is distributed in the hope that it will be useful, but 17 * WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * The full GNU General Public License is included in this distribution 22 * in the file called COPYING. 23 * 24 * Contact Information: 25 * Intel Linux Wireless <linuxwifi@intel.com> 26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27 * 28 * BSD LICENSE 29 * 30 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH 31 * Copyright(c) 2015 - 2017 Intel Deutschland GmbH 32 * Copyright(c) 2012 - 2014, 2018 - 2020 Intel Corporation 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 39 * * Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * * Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in 43 * the documentation and/or other materials provided with the 44 * distribution. 45 * * Neither the name Intel Corporation nor the names of its 46 * contributors may be used to endorse or promote products derived 47 * from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 *****************************************************************************/ 62 63 #include <linux/etherdevice.h> 64 #include <net/mac80211.h> 65 #include "iwl-io.h" 66 #include "iwl-prph.h" 67 #include "fw-api.h" 68 #include "mvm.h" 69 #include "time-event.h" 70 71 const u8 iwl_mvm_ac_to_tx_fifo[] = { 72 IWL_MVM_TX_FIFO_VO, 73 IWL_MVM_TX_FIFO_VI, 74 IWL_MVM_TX_FIFO_BE, 75 IWL_MVM_TX_FIFO_BK, 76 }; 77 78 const u8 iwl_mvm_ac_to_gen2_tx_fifo[] = { 79 IWL_GEN2_EDCA_TX_FIFO_VO, 80 IWL_GEN2_EDCA_TX_FIFO_VI, 81 IWL_GEN2_EDCA_TX_FIFO_BE, 82 IWL_GEN2_EDCA_TX_FIFO_BK, 83 IWL_GEN2_TRIG_TX_FIFO_VO, 84 IWL_GEN2_TRIG_TX_FIFO_VI, 85 IWL_GEN2_TRIG_TX_FIFO_BE, 86 IWL_GEN2_TRIG_TX_FIFO_BK, 87 }; 88 89 struct iwl_mvm_mac_iface_iterator_data { 90 struct iwl_mvm *mvm; 91 struct ieee80211_vif *vif; 92 unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; 93 unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; 94 enum iwl_tsf_id preferred_tsf; 95 bool found_vif; 96 }; 97 98 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 99 struct ieee80211_vif *vif) 100 { 101 struct iwl_mvm_mac_iface_iterator_data *data = _data; 102 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 103 u16 min_bi; 104 105 /* Skip the interface for which we are trying to assign a tsf_id */ 106 if (vif == data->vif) 107 return; 108 109 /* 110 * The TSF is a hardware/firmware resource, there are 4 and 111 * the driver should assign and free them as needed. However, 112 * there are cases where 2 MACs should share the same TSF ID 113 * for the purpose of clock sync, an optimization to avoid 114 * clock drift causing overlapping TBTTs/DTIMs for a GO and 115 * client in the system. 116 * 117 * The firmware will decide according to the MAC type which 118 * will be the master and slave. Clients that need to sync 119 * with a remote station will be the master, and an AP or GO 120 * will be the slave. 121 * 122 * Depending on the new interface type it can be slaved to 123 * or become the master of an existing interface. 124 */ 125 switch (data->vif->type) { 126 case NL80211_IFTYPE_STATION: 127 /* 128 * The new interface is a client, so if the one we're iterating 129 * is an AP, and the beacon interval of the AP is a multiple or 130 * divisor of the beacon interval of the client, the same TSF 131 * should be used to avoid drift between the new client and 132 * existing AP. The existing AP will get drift updates from the 133 * new client context in this case. 134 */ 135 if (vif->type != NL80211_IFTYPE_AP || 136 data->preferred_tsf != NUM_TSF_IDS || 137 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 138 break; 139 140 min_bi = min(data->vif->bss_conf.beacon_int, 141 vif->bss_conf.beacon_int); 142 143 if (!min_bi) 144 break; 145 146 if ((data->vif->bss_conf.beacon_int - 147 vif->bss_conf.beacon_int) % min_bi == 0) { 148 data->preferred_tsf = mvmvif->tsf_id; 149 return; 150 } 151 break; 152 153 case NL80211_IFTYPE_AP: 154 /* 155 * The new interface is AP/GO, so if its beacon interval is a 156 * multiple or a divisor of the beacon interval of an existing 157 * interface, it should get drift updates from an existing 158 * client or use the same TSF as an existing GO. There's no 159 * drift between TSFs internally but if they used different 160 * TSFs then a new client MAC could update one of them and 161 * cause drift that way. 162 */ 163 if ((vif->type != NL80211_IFTYPE_AP && 164 vif->type != NL80211_IFTYPE_STATION) || 165 data->preferred_tsf != NUM_TSF_IDS || 166 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 167 break; 168 169 min_bi = min(data->vif->bss_conf.beacon_int, 170 vif->bss_conf.beacon_int); 171 172 if (!min_bi) 173 break; 174 175 if ((data->vif->bss_conf.beacon_int - 176 vif->bss_conf.beacon_int) % min_bi == 0) { 177 data->preferred_tsf = mvmvif->tsf_id; 178 return; 179 } 180 break; 181 default: 182 /* 183 * For all other interface types there's no need to 184 * take drift into account. Either they're exclusive 185 * like IBSS and monitor, or we don't care much about 186 * their TSF (like P2P Device), but we won't be able 187 * to share the TSF resource. 188 */ 189 break; 190 } 191 192 /* 193 * Unless we exited above, we can't share the TSF resource 194 * that the virtual interface we're iterating over is using 195 * with the new one, so clear the available bit and if this 196 * was the preferred one, reset that as well. 197 */ 198 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 199 200 if (data->preferred_tsf == mvmvif->tsf_id) 201 data->preferred_tsf = NUM_TSF_IDS; 202 } 203 204 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 205 struct ieee80211_vif *vif) 206 { 207 struct iwl_mvm_mac_iface_iterator_data *data = _data; 208 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 209 210 /* Iterator may already find the interface being added -- skip it */ 211 if (vif == data->vif) { 212 data->found_vif = true; 213 return; 214 } 215 216 /* Mark MAC IDs as used by clearing the available bit, and 217 * (below) mark TSFs as used if their existing use is not 218 * compatible with the new interface type. 219 * No locking or atomic bit operations are needed since the 220 * data is on the stack of the caller function. 221 */ 222 __clear_bit(mvmvif->id, data->available_mac_ids); 223 224 /* find a suitable tsf_id */ 225 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 226 } 227 228 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 229 struct ieee80211_vif *vif) 230 { 231 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 232 struct iwl_mvm_mac_iface_iterator_data data = { 233 .mvm = mvm, 234 .vif = vif, 235 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 236 /* no preference yet */ 237 .preferred_tsf = NUM_TSF_IDS, 238 }; 239 240 ieee80211_iterate_active_interfaces_atomic( 241 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 242 iwl_mvm_mac_tsf_id_iter, &data); 243 244 if (data.preferred_tsf != NUM_TSF_IDS) 245 mvmvif->tsf_id = data.preferred_tsf; 246 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 247 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 248 NUM_TSF_IDS); 249 } 250 251 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 252 { 253 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 254 struct iwl_mvm_mac_iface_iterator_data data = { 255 .mvm = mvm, 256 .vif = vif, 257 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 258 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 259 /* no preference yet */ 260 .preferred_tsf = NUM_TSF_IDS, 261 .found_vif = false, 262 }; 263 int ret, i; 264 265 lockdep_assert_held(&mvm->mutex); 266 267 /* 268 * Allocate a MAC ID and a TSF for this MAC, along with the queues 269 * and other resources. 270 */ 271 272 /* 273 * Before the iterator, we start with all MAC IDs and TSFs available. 274 * 275 * During iteration, all MAC IDs are cleared that are in use by other 276 * virtual interfaces, and all TSF IDs are cleared that can't be used 277 * by this new virtual interface because they're used by an interface 278 * that can't share it with the new one. 279 * At the same time, we check if there's a preferred TSF in the case 280 * that we should share it with another interface. 281 */ 282 283 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 284 switch (vif->type) { 285 case NL80211_IFTYPE_ADHOC: 286 break; 287 case NL80211_IFTYPE_STATION: 288 if (!vif->p2p) 289 break; 290 /* fall through */ 291 default: 292 __clear_bit(0, data.available_mac_ids); 293 } 294 295 ieee80211_iterate_active_interfaces_atomic( 296 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 297 iwl_mvm_mac_iface_iterator, &data); 298 299 /* 300 * In the case we're getting here during resume, it's similar to 301 * firmware restart, and with RESUME_ALL the iterator will find 302 * the vif being added already. 303 * We don't want to reassign any IDs in either case since doing 304 * so would probably assign different IDs (as interfaces aren't 305 * necessarily added in the same order), but the old IDs were 306 * preserved anyway, so skip ID assignment for both resume and 307 * recovery. 308 */ 309 if (data.found_vif) 310 return 0; 311 312 /* Therefore, in recovery, we can't get here */ 313 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 314 return -EBUSY; 315 316 mvmvif->id = find_first_bit(data.available_mac_ids, 317 NUM_MAC_INDEX_DRIVER); 318 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 319 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 320 ret = -EIO; 321 goto exit_fail; 322 } 323 324 if (data.preferred_tsf != NUM_TSF_IDS) 325 mvmvif->tsf_id = data.preferred_tsf; 326 else 327 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 328 NUM_TSF_IDS); 329 if (mvmvif->tsf_id == NUM_TSF_IDS) { 330 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 331 ret = -EIO; 332 goto exit_fail; 333 } 334 335 mvmvif->color = 0; 336 337 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 338 mvmvif->time_event_data.id = TE_MAX; 339 340 /* No need to allocate data queues to P2P Device MAC and NAN.*/ 341 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 342 return 0; 343 344 /* Allocate the CAB queue for softAP and GO interfaces */ 345 if (vif->type == NL80211_IFTYPE_AP || 346 vif->type == NL80211_IFTYPE_ADHOC) { 347 /* 348 * For TVQM this will be overwritten later with the FW assigned 349 * queue value (when queue is enabled). 350 */ 351 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 352 } 353 354 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; 355 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; 356 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 357 358 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 359 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 360 361 return 0; 362 363 exit_fail: 364 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 365 return ret; 366 } 367 368 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 369 struct ieee80211_vif *vif, 370 enum nl80211_band band, 371 u8 *cck_rates, u8 *ofdm_rates) 372 { 373 struct ieee80211_supported_band *sband; 374 unsigned long basic = vif->bss_conf.basic_rates; 375 int lowest_present_ofdm = 100; 376 int lowest_present_cck = 100; 377 u8 cck = 0; 378 u8 ofdm = 0; 379 int i; 380 381 sband = mvm->hw->wiphy->bands[band]; 382 383 for_each_set_bit(i, &basic, BITS_PER_LONG) { 384 int hw = sband->bitrates[i].hw_value; 385 if (hw >= IWL_FIRST_OFDM_RATE) { 386 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 387 if (lowest_present_ofdm > hw) 388 lowest_present_ofdm = hw; 389 } else { 390 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 391 392 cck |= BIT(hw); 393 if (lowest_present_cck > hw) 394 lowest_present_cck = hw; 395 } 396 } 397 398 /* 399 * Now we've got the basic rates as bitmaps in the ofdm and cck 400 * variables. This isn't sufficient though, as there might not 401 * be all the right rates in the bitmap. E.g. if the only basic 402 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 403 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 404 * 405 * [...] a STA responding to a received frame shall transmit 406 * its Control Response frame [...] at the highest rate in the 407 * BSSBasicRateSet parameter that is less than or equal to the 408 * rate of the immediately previous frame in the frame exchange 409 * sequence ([...]) and that is of the same modulation class 410 * ([...]) as the received frame. If no rate contained in the 411 * BSSBasicRateSet parameter meets these conditions, then the 412 * control frame sent in response to a received frame shall be 413 * transmitted at the highest mandatory rate of the PHY that is 414 * less than or equal to the rate of the received frame, and 415 * that is of the same modulation class as the received frame. 416 * 417 * As a consequence, we need to add all mandatory rates that are 418 * lower than all of the basic rates to these bitmaps. 419 */ 420 421 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 422 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 423 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 424 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 425 /* 6M already there or needed so always add */ 426 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 427 428 /* 429 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 430 * Note, however: 431 * - if no CCK rates are basic, it must be ERP since there must 432 * be some basic rates at all, so they're OFDM => ERP PHY 433 * (or we're in 5 GHz, and the cck bitmap will never be used) 434 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 435 * - if 5.5M is basic, 1M and 2M are mandatory 436 * - if 2M is basic, 1M is mandatory 437 * - if 1M is basic, that's the only valid ACK rate. 438 * As a consequence, it's not as complicated as it sounds, just add 439 * any lower rates to the ACK rate bitmap. 440 */ 441 if (IWL_RATE_11M_INDEX < lowest_present_cck) 442 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 443 if (IWL_RATE_5M_INDEX < lowest_present_cck) 444 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 445 if (IWL_RATE_2M_INDEX < lowest_present_cck) 446 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 447 /* 1M already there or needed so always add */ 448 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 449 450 *cck_rates = cck; 451 *ofdm_rates = ofdm; 452 } 453 454 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 455 struct ieee80211_vif *vif, 456 struct iwl_mac_ctx_cmd *cmd) 457 { 458 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 459 u8 protection_mode = vif->bss_conf.ht_operation_mode & 460 IEEE80211_HT_OP_MODE_PROTECTION; 461 /* The fw does not distinguish between ht and fat */ 462 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 463 464 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 465 /* 466 * See section 9.23.3.1 of IEEE 80211-2012. 467 * Nongreenfield HT STAs Present is not supported. 468 */ 469 switch (protection_mode) { 470 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 471 break; 472 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 473 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 474 cmd->protection_flags |= cpu_to_le32(ht_flag); 475 break; 476 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 477 /* Protect when channel wider than 20MHz */ 478 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 479 cmd->protection_flags |= cpu_to_le32(ht_flag); 480 break; 481 default: 482 IWL_ERR(mvm, "Illegal protection mode %d\n", 483 protection_mode); 484 break; 485 } 486 } 487 488 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 489 struct ieee80211_vif *vif, 490 struct iwl_mac_ctx_cmd *cmd, 491 const u8 *bssid_override, 492 u32 action) 493 { 494 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 495 struct ieee80211_chanctx_conf *chanctx; 496 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 497 IEEE80211_HT_OP_MODE_PROTECTION); 498 u8 cck_ack_rates, ofdm_ack_rates; 499 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 500 int i; 501 502 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 503 mvmvif->color)); 504 cmd->action = cpu_to_le32(action); 505 506 switch (vif->type) { 507 case NL80211_IFTYPE_STATION: 508 if (vif->p2p) 509 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 510 else 511 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 512 break; 513 case NL80211_IFTYPE_AP: 514 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 515 break; 516 case NL80211_IFTYPE_MONITOR: 517 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 518 break; 519 case NL80211_IFTYPE_P2P_DEVICE: 520 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 521 break; 522 case NL80211_IFTYPE_ADHOC: 523 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 524 break; 525 default: 526 WARN_ON_ONCE(1); 527 } 528 529 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 530 531 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 532 533 if (bssid) 534 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 535 else 536 eth_broadcast_addr(cmd->bssid_addr); 537 538 rcu_read_lock(); 539 chanctx = rcu_dereference(vif->chanctx_conf); 540 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 541 : NL80211_BAND_2GHZ, 542 &cck_ack_rates, &ofdm_ack_rates); 543 rcu_read_unlock(); 544 545 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 546 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 547 548 cmd->cck_short_preamble = 549 cpu_to_le32(vif->bss_conf.use_short_preamble ? 550 MAC_FLG_SHORT_PREAMBLE : 0); 551 cmd->short_slot = 552 cpu_to_le32(vif->bss_conf.use_short_slot ? 553 MAC_FLG_SHORT_SLOT : 0); 554 555 cmd->filter_flags = 0; 556 557 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 558 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 559 u8 ucode_ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 560 561 cmd->ac[ucode_ac].cw_min = 562 cpu_to_le16(mvmvif->queue_params[i].cw_min); 563 cmd->ac[ucode_ac].cw_max = 564 cpu_to_le16(mvmvif->queue_params[i].cw_max); 565 cmd->ac[ucode_ac].edca_txop = 566 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 567 cmd->ac[ucode_ac].aifsn = mvmvif->queue_params[i].aifs; 568 cmd->ac[ucode_ac].fifos_mask = BIT(txf); 569 } 570 571 if (vif->bss_conf.qos) 572 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 573 574 if (vif->bss_conf.use_cts_prot) 575 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 576 577 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 578 vif->bss_conf.use_cts_prot, 579 vif->bss_conf.ht_operation_mode); 580 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 581 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 582 if (ht_enabled) 583 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 584 } 585 586 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 587 struct iwl_mac_ctx_cmd *cmd) 588 { 589 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 590 sizeof(*cmd), cmd); 591 if (ret) 592 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 593 le32_to_cpu(cmd->action), ret); 594 return ret; 595 } 596 597 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 598 struct ieee80211_vif *vif, 599 u32 action, bool force_assoc_off, 600 const u8 *bssid_override) 601 { 602 struct iwl_mac_ctx_cmd cmd = {}; 603 struct iwl_mac_data_sta *ctxt_sta; 604 605 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 606 607 /* Fill the common data for all mac context types */ 608 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 609 610 if (vif->p2p) { 611 struct ieee80211_p2p_noa_attr *noa = 612 &vif->bss_conf.p2p_noa_attr; 613 614 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 615 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 616 ctxt_sta = &cmd.p2p_sta.sta; 617 } else { 618 ctxt_sta = &cmd.sta; 619 } 620 621 /* We need the dtim_period to set the MAC as associated */ 622 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && 623 !force_assoc_off) { 624 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 625 u8 ap_sta_id = mvmvif->ap_sta_id; 626 u32 dtim_offs; 627 628 /* 629 * The DTIM count counts down, so when it is N that means N 630 * more beacon intervals happen until the DTIM TBTT. Therefore 631 * add this to the current time. If that ends up being in the 632 * future, the firmware will handle it. 633 * 634 * Also note that the system_timestamp (which we get here as 635 * "sync_device_ts") and TSF timestamp aren't at exactly the 636 * same offset in the frame -- the TSF is at the first symbol 637 * of the TSF, the system timestamp is at signal acquisition 638 * time. This means there's an offset between them of at most 639 * a few hundred microseconds (24 * 8 bits + PLCP time gives 640 * 384us in the longest case), this is currently not relevant 641 * as the firmware wakes up around 2ms before the TBTT. 642 */ 643 dtim_offs = vif->bss_conf.sync_dtim_count * 644 vif->bss_conf.beacon_int; 645 /* convert TU to usecs */ 646 dtim_offs *= 1024; 647 648 ctxt_sta->dtim_tsf = 649 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 650 ctxt_sta->dtim_time = 651 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 652 ctxt_sta->assoc_beacon_arrive_time = 653 cpu_to_le32(vif->bss_conf.sync_device_ts); 654 655 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 656 le64_to_cpu(ctxt_sta->dtim_tsf), 657 le32_to_cpu(ctxt_sta->dtim_time), 658 dtim_offs); 659 660 ctxt_sta->is_assoc = cpu_to_le32(1); 661 662 /* 663 * allow multicast data frames only as long as the station is 664 * authorized, i.e., GTK keys are already installed (if needed) 665 */ 666 if (ap_sta_id < mvm->fw->ucode_capa.num_stations) { 667 struct ieee80211_sta *sta; 668 669 rcu_read_lock(); 670 671 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 672 if (!IS_ERR_OR_NULL(sta)) { 673 struct iwl_mvm_sta *mvmsta = 674 iwl_mvm_sta_from_mac80211(sta); 675 676 if (mvmsta->sta_state == 677 IEEE80211_STA_AUTHORIZED) 678 cmd.filter_flags |= 679 cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 680 } 681 682 rcu_read_unlock(); 683 } 684 } else { 685 ctxt_sta->is_assoc = cpu_to_le32(0); 686 687 /* Allow beacons to pass through as long as we are not 688 * associated, or we do not have dtim period information. 689 */ 690 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 691 } 692 693 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 694 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 695 vif->bss_conf.dtim_period); 696 697 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 698 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); 699 700 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) 701 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 702 703 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) { 704 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 705 if (vif->bss_conf.twt_requester && IWL_MVM_USE_TWT) { 706 ctxt_sta->data_policy |= cpu_to_le32(TWT_SUPPORTED); 707 if (vif->bss_conf.twt_protected) 708 ctxt_sta->data_policy |= 709 cpu_to_le32(PROTECTED_TWT_SUPPORTED); 710 } 711 } 712 713 714 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 715 } 716 717 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 718 struct ieee80211_vif *vif, 719 u32 action) 720 { 721 struct iwl_mac_ctx_cmd cmd = {}; 722 u32 tfd_queue_msk = BIT(mvm->snif_queue); 723 int ret; 724 725 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 726 727 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 728 729 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 730 MAC_FILTER_IN_CONTROL_AND_MGMT | 731 MAC_FILTER_IN_BEACON | 732 MAC_FILTER_IN_PROBE_REQUEST | 733 MAC_FILTER_IN_CRC32 | 734 MAC_FILTER_ACCEPT_GRP); 735 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 736 737 /* Allocate sniffer station */ 738 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 739 vif->type, IWL_STA_GENERAL_PURPOSE); 740 if (ret) 741 return ret; 742 743 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 744 } 745 746 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 747 struct ieee80211_vif *vif, 748 u32 action) 749 { 750 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 751 struct iwl_mac_ctx_cmd cmd = {}; 752 753 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 754 755 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 756 757 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 758 MAC_FILTER_IN_PROBE_REQUEST | 759 MAC_FILTER_ACCEPT_GRP); 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 if (info->band == NL80211_BAND_2GHZ && !vif->p2p) 861 rate = IWL_FIRST_CCK_RATE; 862 else 863 rate = IWL_FIRST_OFDM_RATE; 864 865 return rate; 866 } 867 868 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 869 struct ieee80211_vif *vif, 870 struct sk_buff *beacon, 871 struct iwl_tx_cmd *tx) 872 { 873 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 874 struct ieee80211_tx_info *info; 875 u8 rate; 876 u32 tx_flags; 877 878 info = IEEE80211_SKB_CB(beacon); 879 880 /* Set up TX command fields */ 881 tx->len = cpu_to_le16((u16)beacon->len); 882 tx->sta_id = mvmvif->bcast_sta.sta_id; 883 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 884 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 885 tx_flags |= 886 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 887 TX_CMD_FLG_BT_PRIO_POS; 888 tx->tx_flags = cpu_to_le32(tx_flags); 889 890 if (!fw_has_capa(&mvm->fw->ucode_capa, 891 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 892 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 893 894 tx->rate_n_flags = 895 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 896 RATE_MCS_ANT_POS); 897 898 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 899 900 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); 901 if (rate == IWL_FIRST_CCK_RATE) 902 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); 903 904 } 905 906 int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 907 struct sk_buff *beacon, 908 void *data, int len) 909 { 910 struct iwl_host_cmd cmd = { 911 .id = BEACON_TEMPLATE_CMD, 912 .flags = CMD_ASYNC, 913 }; 914 915 cmd.len[0] = len; 916 cmd.data[0] = data; 917 cmd.dataflags[0] = 0; 918 cmd.len[1] = beacon->len; 919 cmd.data[1] = beacon->data; 920 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 921 922 return iwl_mvm_send_cmd(mvm, &cmd); 923 } 924 925 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 926 struct ieee80211_vif *vif, 927 struct sk_buff *beacon) 928 { 929 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 930 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 931 932 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 933 934 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 935 936 if (vif->type == NL80211_IFTYPE_AP) 937 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 938 &beacon_cmd.tim_size, 939 beacon->data, beacon->len); 940 941 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 942 sizeof(beacon_cmd)); 943 } 944 945 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 946 struct ieee80211_vif *vif, 947 struct sk_buff *beacon) 948 { 949 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 950 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 951 952 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 953 954 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 955 956 if (vif->type == NL80211_IFTYPE_AP) 957 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 958 &beacon_cmd.tim_size, 959 beacon->data, beacon->len); 960 961 beacon_cmd.csa_offset = 962 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 963 WLAN_EID_CHANNEL_SWITCH, 964 beacon->len)); 965 beacon_cmd.ecsa_offset = 966 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 967 WLAN_EID_EXT_CHANSWITCH_ANN, 968 beacon->len)); 969 970 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 971 sizeof(beacon_cmd)); 972 } 973 974 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 975 struct ieee80211_vif *vif, 976 struct sk_buff *beacon) 977 { 978 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 979 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 980 struct iwl_mac_beacon_cmd beacon_cmd = {}; 981 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 982 u16 flags; 983 984 flags = iwl_mvm_mac80211_idx_to_hwrate(rate); 985 986 if (rate == IWL_FIRST_CCK_RATE) 987 flags |= IWL_MAC_BEACON_CCK; 988 989 beacon_cmd.flags = cpu_to_le16(flags); 990 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 991 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 992 993 if (vif->type == NL80211_IFTYPE_AP) 994 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 995 &beacon_cmd.tim_size, 996 beacon->data, beacon->len); 997 998 beacon_cmd.csa_offset = 999 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1000 WLAN_EID_CHANNEL_SWITCH, 1001 beacon->len)); 1002 beacon_cmd.ecsa_offset = 1003 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1004 WLAN_EID_EXT_CHANSWITCH_ANN, 1005 beacon->len)); 1006 1007 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1008 sizeof(beacon_cmd)); 1009 } 1010 1011 int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1012 struct ieee80211_vif *vif, 1013 struct sk_buff *beacon) 1014 { 1015 if (WARN_ON(!beacon)) 1016 return -EINVAL; 1017 1018 if (IWL_MVM_NON_TRANSMITTING_AP) 1019 return 0; 1020 1021 if (!fw_has_capa(&mvm->fw->ucode_capa, 1022 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1023 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1024 1025 if (fw_has_api(&mvm->fw->ucode_capa, 1026 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1027 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); 1028 1029 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1030 } 1031 1032 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1033 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1034 struct ieee80211_vif *vif) 1035 { 1036 struct sk_buff *beacon; 1037 int ret; 1038 1039 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1040 vif->type != NL80211_IFTYPE_ADHOC); 1041 1042 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); 1043 if (!beacon) 1044 return -ENOMEM; 1045 1046 #ifdef CONFIG_IWLWIFI_DEBUGFS 1047 if (mvm->beacon_inject_active) 1048 return -EBUSY; 1049 #endif 1050 1051 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 1052 dev_kfree_skb(beacon); 1053 return ret; 1054 } 1055 1056 struct iwl_mvm_mac_ap_iterator_data { 1057 struct iwl_mvm *mvm; 1058 struct ieee80211_vif *vif; 1059 u32 beacon_device_ts; 1060 u16 beacon_int; 1061 }; 1062 1063 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1064 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1065 struct ieee80211_vif *vif) 1066 { 1067 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1068 1069 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) 1070 return; 1071 1072 /* Station client has higher priority over P2P client*/ 1073 if (vif->p2p && data->beacon_device_ts) 1074 return; 1075 1076 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1077 data->beacon_int = vif->bss_conf.beacon_int; 1078 } 1079 1080 /* 1081 * Fill the specific data for mac context of type AP of P2P GO 1082 */ 1083 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1084 struct ieee80211_vif *vif, 1085 struct iwl_mac_ctx_cmd *cmd, 1086 struct iwl_mac_data_ap *ctxt_ap, 1087 bool add) 1088 { 1089 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1090 struct iwl_mvm_mac_ap_iterator_data data = { 1091 .mvm = mvm, 1092 .vif = vif, 1093 .beacon_device_ts = 0 1094 }; 1095 1096 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1097 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1098 1099 /* 1100 * in AP mode, pass probe requests and beacons from other APs 1101 * (needed for ht protection); when there're no any associated 1102 * station don't ask FW to pass beacons to prevent unnecessary 1103 * wake-ups. 1104 */ 1105 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1106 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1107 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 1108 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1109 } else { 1110 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1111 } 1112 1113 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1114 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1115 vif->bss_conf.dtim_period); 1116 1117 if (!fw_has_api(&mvm->fw->ucode_capa, 1118 IWL_UCODE_TLV_API_STA_TYPE)) 1119 ctxt_ap->mcast_qid = cpu_to_le32(mvmvif->cab_queue); 1120 1121 /* 1122 * Only set the beacon time when the MAC is being added, when we 1123 * just modify the MAC then we should keep the time -- the firmware 1124 * can otherwise have a "jumping" TBTT. 1125 */ 1126 if (add) { 1127 /* 1128 * If there is a station/P2P client interface which is 1129 * associated, set the AP's TBTT far enough from the station's 1130 * TBTT. Otherwise, set it to the current system time 1131 */ 1132 ieee80211_iterate_active_interfaces_atomic( 1133 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1134 iwl_mvm_mac_ap_iterator, &data); 1135 1136 if (data.beacon_device_ts) { 1137 u32 rand = (prandom_u32() % (64 - 36)) + 36; 1138 mvmvif->ap_beacon_time = data.beacon_device_ts + 1139 ieee80211_tu_to_usec(data.beacon_int * rand / 1140 100); 1141 } else { 1142 mvmvif->ap_beacon_time = iwl_mvm_get_systime(mvm); 1143 } 1144 } 1145 1146 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1147 ctxt_ap->beacon_tsf = 0; /* unused */ 1148 1149 /* TODO: Assume that the beacon id == mac context id */ 1150 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1151 } 1152 1153 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1154 struct ieee80211_vif *vif, 1155 u32 action) 1156 { 1157 struct iwl_mac_ctx_cmd cmd = {}; 1158 1159 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1160 1161 /* Fill the common data for all mac context types */ 1162 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1163 1164 /* Fill the data specific for ap mode */ 1165 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1166 action == FW_CTXT_ACTION_ADD); 1167 1168 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1169 } 1170 1171 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1172 struct ieee80211_vif *vif, 1173 u32 action) 1174 { 1175 struct iwl_mac_ctx_cmd cmd = {}; 1176 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1177 1178 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1179 1180 /* Fill the common data for all mac context types */ 1181 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1182 1183 /* Fill the data specific for GO mode */ 1184 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1185 action == FW_CTXT_ACTION_ADD); 1186 1187 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1188 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1189 cmd.go.opp_ps_enabled = 1190 cpu_to_le32(!!(noa->oppps_ctwindow & 1191 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1192 1193 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1194 } 1195 1196 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1197 u32 action, bool force_assoc_off, 1198 const u8 *bssid_override) 1199 { 1200 switch (vif->type) { 1201 case NL80211_IFTYPE_STATION: 1202 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1203 force_assoc_off, 1204 bssid_override); 1205 break; 1206 case NL80211_IFTYPE_AP: 1207 if (!vif->p2p) 1208 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1209 else 1210 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1211 break; 1212 case NL80211_IFTYPE_MONITOR: 1213 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1214 case NL80211_IFTYPE_P2P_DEVICE: 1215 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1216 case NL80211_IFTYPE_ADHOC: 1217 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1218 default: 1219 break; 1220 } 1221 1222 return -EOPNOTSUPP; 1223 } 1224 1225 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1226 { 1227 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1228 int ret; 1229 1230 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1231 vif->addr, ieee80211_vif_type_p2p(vif))) 1232 return -EIO; 1233 1234 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1235 true, NULL); 1236 if (ret) 1237 return ret; 1238 1239 /* will only do anything at resume from D3 time */ 1240 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1241 1242 mvmvif->uploaded = true; 1243 return 0; 1244 } 1245 1246 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1247 bool force_assoc_off, const u8 *bssid_override) 1248 { 1249 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1250 1251 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1252 vif->addr, ieee80211_vif_type_p2p(vif))) 1253 return -EIO; 1254 1255 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1256 force_assoc_off, bssid_override); 1257 } 1258 1259 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1260 { 1261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1262 struct iwl_mac_ctx_cmd cmd; 1263 int ret; 1264 1265 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1266 vif->addr, ieee80211_vif_type_p2p(vif))) 1267 return -EIO; 1268 1269 memset(&cmd, 0, sizeof(cmd)); 1270 1271 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1272 mvmvif->color)); 1273 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1274 1275 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 1276 sizeof(cmd), &cmd); 1277 if (ret) { 1278 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1279 return ret; 1280 } 1281 1282 mvmvif->uploaded = false; 1283 1284 if (vif->type == NL80211_IFTYPE_MONITOR) { 1285 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1286 iwl_mvm_dealloc_snif_sta(mvm); 1287 } 1288 1289 return 0; 1290 } 1291 1292 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1293 struct ieee80211_vif *csa_vif, u32 gp2, 1294 bool tx_success) 1295 { 1296 struct iwl_mvm_vif *mvmvif = 1297 iwl_mvm_vif_from_mac80211(csa_vif); 1298 1299 /* Don't start to countdown from a failed beacon */ 1300 if (!tx_success && !mvmvif->csa_countdown) 1301 return; 1302 1303 mvmvif->csa_countdown = true; 1304 1305 if (!ieee80211_beacon_cntdwn_is_complete(csa_vif)) { 1306 int c = ieee80211_beacon_update_cntdwn(csa_vif); 1307 1308 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); 1309 if (csa_vif->p2p && 1310 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1311 tx_success) { 1312 u32 rel_time = (c + 1) * 1313 csa_vif->bss_conf.beacon_int - 1314 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1315 u32 apply_time = gp2 + rel_time * 1024; 1316 1317 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1318 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1319 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1320 apply_time); 1321 } 1322 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1323 /* we don't have CSA NoA scheduled yet, switch now */ 1324 ieee80211_csa_finish(csa_vif); 1325 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1326 } 1327 } 1328 1329 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1330 struct iwl_rx_cmd_buffer *rxb) 1331 { 1332 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1333 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1334 struct iwl_extended_beacon_notif_v5 *beacon_v5 = (void *)pkt->data; 1335 struct ieee80211_vif *csa_vif; 1336 struct ieee80211_vif *tx_blocked_vif; 1337 struct agg_tx_status *agg_status; 1338 u16 status; 1339 1340 lockdep_assert_held(&mvm->mutex); 1341 1342 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1343 1344 if (!iwl_mvm_is_short_beacon_notif_supported(mvm)) { 1345 struct iwl_mvm_tx_resp *beacon_notify_hdr = 1346 &beacon_v5->beacon_notify_hdr; 1347 1348 mvm->ibss_manager = beacon_v5->ibss_mgr_status != 0; 1349 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1350 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1351 IWL_DEBUG_RX(mvm, 1352 "beacon status %#x retries:%d tsf:0x%016llX gp2:0x%X rate:%d\n", 1353 status, beacon_notify_hdr->failure_frame, 1354 le64_to_cpu(beacon->tsf), 1355 mvm->ap_last_beacon_gp2, 1356 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1357 } else { 1358 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1359 status = le32_to_cpu(beacon->status) & TX_STATUS_MSK; 1360 IWL_DEBUG_RX(mvm, 1361 "beacon status %#x tsf:0x%016llX gp2:0x%X\n", 1362 status, le64_to_cpu(beacon->tsf), 1363 mvm->ap_last_beacon_gp2); 1364 } 1365 1366 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1367 lockdep_is_held(&mvm->mutex)); 1368 if (unlikely(csa_vif && csa_vif->csa_active)) 1369 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1370 (status == TX_STATUS_SUCCESS)); 1371 1372 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1373 lockdep_is_held(&mvm->mutex)); 1374 if (unlikely(tx_blocked_vif)) { 1375 struct iwl_mvm_vif *mvmvif = 1376 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1377 1378 /* 1379 * The channel switch is started and we have blocked the 1380 * stations. If this is the first beacon (the timeout wasn't 1381 * set), set the unblock timeout, otherwise countdown 1382 */ 1383 if (!mvm->csa_tx_block_bcn_timeout) 1384 mvm->csa_tx_block_bcn_timeout = 1385 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1386 else 1387 mvm->csa_tx_block_bcn_timeout--; 1388 1389 /* Check if the timeout is expired, and unblock tx */ 1390 if (mvm->csa_tx_block_bcn_timeout == 0) { 1391 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1392 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1393 } 1394 } 1395 } 1396 1397 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1398 struct iwl_rx_cmd_buffer *rxb) 1399 { 1400 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1401 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1402 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1403 struct iwl_fw_dbg_trigger_tlv *trigger; 1404 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1405 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1406 struct ieee80211_vif *vif; 1407 u32 id = le32_to_cpu(mb->mac_id); 1408 union iwl_dbg_tlv_tp_data tp_data = { .fw_pkt = pkt }; 1409 1410 IWL_DEBUG_INFO(mvm, 1411 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1412 le32_to_cpu(mb->mac_id), 1413 le32_to_cpu(mb->consec_missed_beacons), 1414 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1415 le32_to_cpu(mb->num_recvd_beacons), 1416 le32_to_cpu(mb->num_expected_beacons)); 1417 1418 rcu_read_lock(); 1419 1420 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1421 if (!vif) 1422 goto out; 1423 1424 rx_missed_bcon = le32_to_cpu(mb->consec_missed_beacons); 1425 rx_missed_bcon_since_rx = 1426 le32_to_cpu(mb->consec_missed_beacons_since_last_rx); 1427 /* 1428 * TODO: the threshold should be adjusted based on latency conditions, 1429 * and/or in case of a CS flow on one of the other AP vifs. 1430 */ 1431 if (rx_missed_bcon > IWL_MVM_MISSED_BEACONS_THRESHOLD_LONG) 1432 iwl_mvm_connection_loss(mvm, vif, "missed beacons"); 1433 else if (rx_missed_bcon_since_rx > IWL_MVM_MISSED_BEACONS_THRESHOLD) 1434 ieee80211_beacon_loss(vif); 1435 1436 iwl_dbg_tlv_time_point(&mvm->fwrt, 1437 IWL_FW_INI_TIME_POINT_MISSED_BEACONS, &tp_data); 1438 1439 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1440 FW_DBG_TRIGGER_MISSED_BEACONS); 1441 if (!trigger) 1442 goto out; 1443 1444 bcon_trig = (void *)trigger->data; 1445 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1446 stop_trig_missed_bcon_since_rx = 1447 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1448 1449 /* TODO: implement start trigger */ 1450 1451 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1452 rx_missed_bcon >= stop_trig_missed_bcon) 1453 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1454 1455 out: 1456 rcu_read_unlock(); 1457 } 1458 1459 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1460 struct iwl_rx_cmd_buffer *rxb) 1461 { 1462 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1463 struct iwl_stored_beacon_notif *sb = (void *)pkt->data; 1464 struct ieee80211_rx_status rx_status; 1465 struct sk_buff *skb; 1466 u32 size = le32_to_cpu(sb->byte_count); 1467 1468 if (size == 0) 1469 return; 1470 1471 skb = alloc_skb(size, GFP_ATOMIC); 1472 if (!skb) { 1473 IWL_ERR(mvm, "alloc_skb failed\n"); 1474 return; 1475 } 1476 1477 /* update rx_status according to the notification's metadata */ 1478 memset(&rx_status, 0, sizeof(rx_status)); 1479 rx_status.mactime = le64_to_cpu(sb->tsf); 1480 /* TSF as indicated by the firmware is at INA time */ 1481 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1482 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1483 rx_status.band = 1484 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1485 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1486 rx_status.freq = 1487 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1488 rx_status.band); 1489 1490 /* copy the data */ 1491 skb_put_data(skb, sb->data, size); 1492 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1493 1494 /* pass it as regular rx to mac80211 */ 1495 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1496 } 1497 1498 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1499 struct iwl_rx_cmd_buffer *rxb) 1500 { 1501 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1502 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1503 struct iwl_probe_resp_data *old_data, *new_data; 1504 int len = iwl_rx_packet_payload_len(pkt); 1505 u32 id = le32_to_cpu(notif->mac_id); 1506 struct ieee80211_vif *vif; 1507 struct iwl_mvm_vif *mvmvif; 1508 1509 if (WARN_ON_ONCE(len < sizeof(*notif))) 1510 return; 1511 1512 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1513 notif->noa_active, notif->csa_counter); 1514 1515 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, false); 1516 if (!vif) 1517 return; 1518 1519 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1520 1521 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1522 if (!new_data) 1523 return; 1524 1525 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1526 1527 /* noa_attr contains 1 reserved byte, need to substruct it */ 1528 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1529 sizeof(new_data->notif.noa_attr) - 1; 1530 1531 /* 1532 * If it's a one time NoA, only one descriptor is needed, 1533 * adjust the length according to len_low. 1534 */ 1535 if (new_data->notif.noa_attr.len_low == 1536 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1537 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1538 1539 old_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1540 lockdep_is_held(&mvmvif->mvm->mutex)); 1541 rcu_assign_pointer(mvmvif->probe_resp_data, new_data); 1542 1543 if (old_data) 1544 kfree_rcu(old_data, rcu_head); 1545 1546 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1547 notif->csa_counter >= 1) 1548 ieee80211_beacon_set_cntdwn(vif, notif->csa_counter); 1549 } 1550 1551 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, 1552 struct iwl_rx_cmd_buffer *rxb) 1553 { 1554 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1555 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data; 1556 struct ieee80211_vif *csa_vif, *vif; 1557 struct iwl_mvm_vif *mvmvif; 1558 int len = iwl_rx_packet_payload_len(pkt); 1559 u32 id_n_color, csa_id, mac_id; 1560 1561 if (WARN_ON_ONCE(len < sizeof(*notif))) 1562 return; 1563 1564 id_n_color = le32_to_cpu(notif->id_and_color); 1565 mac_id = id_n_color & FW_CTXT_ID_MSK; 1566 1567 if (WARN_ON_ONCE(mac_id >= NUM_MAC_INDEX_DRIVER)) 1568 return; 1569 1570 rcu_read_lock(); 1571 vif = rcu_dereference(mvm->vif_id_to_mac[mac_id]); 1572 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1573 1574 switch (vif->type) { 1575 case NL80211_IFTYPE_AP: 1576 csa_vif = rcu_dereference(mvm->csa_vif); 1577 if (WARN_ON(!csa_vif || !csa_vif->csa_active || 1578 csa_vif != vif)) 1579 goto out_unlock; 1580 1581 csa_id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 1582 if (WARN(csa_id != id_n_color, 1583 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1584 csa_id, id_n_color)) 1585 goto out_unlock; 1586 1587 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1588 1589 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1590 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1591 csa_vif->bss_conf.beacon_int)); 1592 1593 ieee80211_csa_finish(csa_vif); 1594 1595 rcu_read_unlock(); 1596 1597 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1598 return; 1599 case NL80211_IFTYPE_STATION: 1600 iwl_mvm_csa_client_absent(mvm, vif); 1601 cancel_delayed_work(&mvmvif->csa_work); 1602 ieee80211_chswitch_done(vif, true); 1603 break; 1604 default: 1605 /* should never happen */ 1606 WARN_ON_ONCE(1); 1607 break; 1608 } 1609 out_unlock: 1610 rcu_read_unlock(); 1611 } 1612 1613 void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, 1614 struct iwl_rx_cmd_buffer *rxb) 1615 { 1616 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1617 struct iwl_missed_vap_notif *mb = (void *)pkt->data; 1618 struct ieee80211_vif *vif; 1619 u32 id = le32_to_cpu(mb->mac_id); 1620 1621 IWL_DEBUG_INFO(mvm, 1622 "missed_vap notify mac_id=%u, num_beacon_intervals_elapsed=%u, profile_periodicity=%u\n", 1623 le32_to_cpu(mb->mac_id), 1624 mb->num_beacon_intervals_elapsed, 1625 mb->profile_periodicity); 1626 1627 rcu_read_lock(); 1628 1629 vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); 1630 if (vif) 1631 iwl_mvm_connection_loss(mvm, vif, "missed vap beacon"); 1632 1633 rcu_read_unlock(); 1634 } 1635