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 struct iwl_mvm_hw_queues_iface_iterator_data { 101 struct ieee80211_vif *exclude_vif; 102 unsigned long used_hw_queues; 103 }; 104 105 static void iwl_mvm_mac_tsf_id_iter(void *_data, u8 *mac, 106 struct ieee80211_vif *vif) 107 { 108 struct iwl_mvm_mac_iface_iterator_data *data = _data; 109 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 110 u16 min_bi; 111 112 /* Skip the interface for which we are trying to assign a tsf_id */ 113 if (vif == data->vif) 114 return; 115 116 /* 117 * The TSF is a hardware/firmware resource, there are 4 and 118 * the driver should assign and free them as needed. However, 119 * there are cases where 2 MACs should share the same TSF ID 120 * for the purpose of clock sync, an optimization to avoid 121 * clock drift causing overlapping TBTTs/DTIMs for a GO and 122 * client in the system. 123 * 124 * The firmware will decide according to the MAC type which 125 * will be the master and slave. Clients that need to sync 126 * with a remote station will be the master, and an AP or GO 127 * will be the slave. 128 * 129 * Depending on the new interface type it can be slaved to 130 * or become the master of an existing interface. 131 */ 132 switch (data->vif->type) { 133 case NL80211_IFTYPE_STATION: 134 /* 135 * The new interface is a client, so if the one we're iterating 136 * is an AP, and the beacon interval of the AP is a multiple or 137 * divisor of the beacon interval of the client, the same TSF 138 * should be used to avoid drift between the new client and 139 * existing AP. The existing AP will get drift updates from the 140 * new client context in this case. 141 */ 142 if (vif->type != NL80211_IFTYPE_AP || 143 data->preferred_tsf != NUM_TSF_IDS || 144 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 145 break; 146 147 min_bi = min(data->vif->bss_conf.beacon_int, 148 vif->bss_conf.beacon_int); 149 150 if (!min_bi) 151 break; 152 153 if ((data->vif->bss_conf.beacon_int - 154 vif->bss_conf.beacon_int) % min_bi == 0) { 155 data->preferred_tsf = mvmvif->tsf_id; 156 return; 157 } 158 break; 159 160 case NL80211_IFTYPE_AP: 161 /* 162 * The new interface is AP/GO, so if its beacon interval is a 163 * multiple or a divisor of the beacon interval of an existing 164 * interface, it should get drift updates from an existing 165 * client or use the same TSF as an existing GO. There's no 166 * drift between TSFs internally but if they used different 167 * TSFs then a new client MAC could update one of them and 168 * cause drift that way. 169 */ 170 if ((vif->type != NL80211_IFTYPE_AP && 171 vif->type != NL80211_IFTYPE_STATION) || 172 data->preferred_tsf != NUM_TSF_IDS || 173 !test_bit(mvmvif->tsf_id, data->available_tsf_ids)) 174 break; 175 176 min_bi = min(data->vif->bss_conf.beacon_int, 177 vif->bss_conf.beacon_int); 178 179 if (!min_bi) 180 break; 181 182 if ((data->vif->bss_conf.beacon_int - 183 vif->bss_conf.beacon_int) % min_bi == 0) { 184 data->preferred_tsf = mvmvif->tsf_id; 185 return; 186 } 187 break; 188 default: 189 /* 190 * For all other interface types there's no need to 191 * take drift into account. Either they're exclusive 192 * like IBSS and monitor, or we don't care much about 193 * their TSF (like P2P Device), but we won't be able 194 * to share the TSF resource. 195 */ 196 break; 197 } 198 199 /* 200 * Unless we exited above, we can't share the TSF resource 201 * that the virtual interface we're iterating over is using 202 * with the new one, so clear the available bit and if this 203 * was the preferred one, reset that as well. 204 */ 205 __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); 206 207 if (data->preferred_tsf == mvmvif->tsf_id) 208 data->preferred_tsf = NUM_TSF_IDS; 209 } 210 211 /* 212 * Get the mask of the queues used by the vif 213 */ 214 u32 iwl_mvm_mac_get_queues_mask(struct ieee80211_vif *vif) 215 { 216 u32 qmask = 0, ac; 217 218 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 219 return BIT(IWL_MVM_OFFCHANNEL_QUEUE); 220 221 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 222 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 223 qmask |= BIT(vif->hw_queue[ac]); 224 } 225 226 if (vif->type == NL80211_IFTYPE_AP || 227 vif->type == NL80211_IFTYPE_ADHOC) 228 qmask |= BIT(vif->cab_queue); 229 230 return qmask; 231 } 232 233 static void iwl_mvm_iface_hw_queues_iter(void *_data, u8 *mac, 234 struct ieee80211_vif *vif) 235 { 236 struct iwl_mvm_hw_queues_iface_iterator_data *data = _data; 237 238 /* exclude the given vif */ 239 if (vif == data->exclude_vif) 240 return; 241 242 data->used_hw_queues |= iwl_mvm_mac_get_queues_mask(vif); 243 } 244 245 unsigned long iwl_mvm_get_used_hw_queues(struct iwl_mvm *mvm, 246 struct ieee80211_vif *exclude_vif) 247 { 248 struct iwl_mvm_hw_queues_iface_iterator_data data = { 249 .exclude_vif = exclude_vif, 250 .used_hw_queues = 251 BIT(IWL_MVM_OFFCHANNEL_QUEUE) | 252 BIT(mvm->aux_queue) | 253 BIT(IWL_MVM_DQA_GCAST_QUEUE), 254 }; 255 256 lockdep_assert_held(&mvm->mutex); 257 258 /* mark all VIF used hw queues */ 259 ieee80211_iterate_active_interfaces_atomic( 260 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 261 iwl_mvm_iface_hw_queues_iter, &data); 262 263 return data.used_hw_queues; 264 } 265 266 static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, 267 struct ieee80211_vif *vif) 268 { 269 struct iwl_mvm_mac_iface_iterator_data *data = _data; 270 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 271 272 /* Iterator may already find the interface being added -- skip it */ 273 if (vif == data->vif) { 274 data->found_vif = true; 275 return; 276 } 277 278 /* Mark MAC IDs as used by clearing the available bit, and 279 * (below) mark TSFs as used if their existing use is not 280 * compatible with the new interface type. 281 * No locking or atomic bit operations are needed since the 282 * data is on the stack of the caller function. 283 */ 284 __clear_bit(mvmvif->id, data->available_mac_ids); 285 286 /* find a suitable tsf_id */ 287 iwl_mvm_mac_tsf_id_iter(_data, mac, vif); 288 } 289 290 void iwl_mvm_mac_ctxt_recalc_tsf_id(struct iwl_mvm *mvm, 291 struct ieee80211_vif *vif) 292 { 293 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 294 struct iwl_mvm_mac_iface_iterator_data data = { 295 .mvm = mvm, 296 .vif = vif, 297 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 298 /* no preference yet */ 299 .preferred_tsf = NUM_TSF_IDS, 300 }; 301 302 ieee80211_iterate_active_interfaces_atomic( 303 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 304 iwl_mvm_mac_tsf_id_iter, &data); 305 306 if (data.preferred_tsf != NUM_TSF_IDS) 307 mvmvif->tsf_id = data.preferred_tsf; 308 else if (!test_bit(mvmvif->tsf_id, data.available_tsf_ids)) 309 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 310 NUM_TSF_IDS); 311 } 312 313 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 314 { 315 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 316 struct iwl_mvm_mac_iface_iterator_data data = { 317 .mvm = mvm, 318 .vif = vif, 319 .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, 320 .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, 321 /* no preference yet */ 322 .preferred_tsf = NUM_TSF_IDS, 323 .found_vif = false, 324 }; 325 u32 ac; 326 int ret, i, queue_limit; 327 unsigned long used_hw_queues; 328 329 lockdep_assert_held(&mvm->mutex); 330 331 /* 332 * Allocate a MAC ID and a TSF for this MAC, along with the queues 333 * and other resources. 334 */ 335 336 /* 337 * Before the iterator, we start with all MAC IDs and TSFs available. 338 * 339 * During iteration, all MAC IDs are cleared that are in use by other 340 * virtual interfaces, and all TSF IDs are cleared that can't be used 341 * by this new virtual interface because they're used by an interface 342 * that can't share it with the new one. 343 * At the same time, we check if there's a preferred TSF in the case 344 * that we should share it with another interface. 345 */ 346 347 /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ 348 switch (vif->type) { 349 case NL80211_IFTYPE_ADHOC: 350 break; 351 case NL80211_IFTYPE_STATION: 352 if (!vif->p2p) 353 break; 354 /* fall through */ 355 default: 356 __clear_bit(0, data.available_mac_ids); 357 } 358 359 ieee80211_iterate_active_interfaces_atomic( 360 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 361 iwl_mvm_mac_iface_iterator, &data); 362 363 used_hw_queues = iwl_mvm_get_used_hw_queues(mvm, vif); 364 365 /* 366 * In the case we're getting here during resume, it's similar to 367 * firmware restart, and with RESUME_ALL the iterator will find 368 * the vif being added already. 369 * We don't want to reassign any IDs in either case since doing 370 * so would probably assign different IDs (as interfaces aren't 371 * necessarily added in the same order), but the old IDs were 372 * preserved anyway, so skip ID assignment for both resume and 373 * recovery. 374 */ 375 if (data.found_vif) 376 return 0; 377 378 /* Therefore, in recovery, we can't get here */ 379 if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) 380 return -EBUSY; 381 382 mvmvif->id = find_first_bit(data.available_mac_ids, 383 NUM_MAC_INDEX_DRIVER); 384 if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { 385 IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); 386 ret = -EIO; 387 goto exit_fail; 388 } 389 390 if (data.preferred_tsf != NUM_TSF_IDS) 391 mvmvif->tsf_id = data.preferred_tsf; 392 else 393 mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, 394 NUM_TSF_IDS); 395 if (mvmvif->tsf_id == NUM_TSF_IDS) { 396 IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); 397 ret = -EIO; 398 goto exit_fail; 399 } 400 401 mvmvif->color = 0; 402 403 INIT_LIST_HEAD(&mvmvif->time_event_data.list); 404 mvmvif->time_event_data.id = TE_MAX; 405 406 /* No need to allocate data queues to P2P Device MAC.*/ 407 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 408 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 409 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; 410 411 return 0; 412 } 413 414 /* 415 * queues in mac80211 almost entirely independent of 416 * the ones here - no real limit 417 */ 418 queue_limit = IEEE80211_MAX_QUEUES; 419 BUILD_BUG_ON(IEEE80211_MAX_QUEUES > 420 BITS_PER_BYTE * 421 sizeof(mvm->hw_queue_to_mac80211[0])); 422 423 /* 424 * Find available queues, and allocate them to the ACs. When in 425 * DQA-mode they aren't really used, and this is done only so the 426 * mac80211 ieee80211_check_queues() function won't fail 427 */ 428 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 429 u8 queue = find_first_zero_bit(&used_hw_queues, queue_limit); 430 431 if (queue >= queue_limit) { 432 IWL_ERR(mvm, "Failed to allocate queue\n"); 433 ret = -EIO; 434 goto exit_fail; 435 } 436 437 __set_bit(queue, &used_hw_queues); 438 vif->hw_queue[ac] = queue; 439 } 440 441 /* Allocate the CAB queue for softAP and GO interfaces */ 442 if (vif->type == NL80211_IFTYPE_AP || 443 vif->type == NL80211_IFTYPE_ADHOC) { 444 /* 445 * For TVQM this will be overwritten later with the FW assigned 446 * queue value (when queue is enabled). 447 */ 448 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 449 vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 450 } else { 451 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; 452 } 453 454 mvmvif->bcast_sta.sta_id = IWL_MVM_INVALID_STA; 455 mvmvif->mcast_sta.sta_id = IWL_MVM_INVALID_STA; 456 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 457 458 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) 459 mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; 460 461 return 0; 462 463 exit_fail: 464 memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); 465 memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); 466 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; 467 return ret; 468 } 469 470 static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, 471 struct ieee80211_vif *vif, 472 enum nl80211_band band, 473 u8 *cck_rates, u8 *ofdm_rates) 474 { 475 struct ieee80211_supported_band *sband; 476 unsigned long basic = vif->bss_conf.basic_rates; 477 int lowest_present_ofdm = 100; 478 int lowest_present_cck = 100; 479 u8 cck = 0; 480 u8 ofdm = 0; 481 int i; 482 483 sband = mvm->hw->wiphy->bands[band]; 484 485 for_each_set_bit(i, &basic, BITS_PER_LONG) { 486 int hw = sband->bitrates[i].hw_value; 487 if (hw >= IWL_FIRST_OFDM_RATE) { 488 ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); 489 if (lowest_present_ofdm > hw) 490 lowest_present_ofdm = hw; 491 } else { 492 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); 493 494 cck |= BIT(hw); 495 if (lowest_present_cck > hw) 496 lowest_present_cck = hw; 497 } 498 } 499 500 /* 501 * Now we've got the basic rates as bitmaps in the ofdm and cck 502 * variables. This isn't sufficient though, as there might not 503 * be all the right rates in the bitmap. E.g. if the only basic 504 * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps 505 * and 6 Mbps because the 802.11-2007 standard says in 9.6: 506 * 507 * [...] a STA responding to a received frame shall transmit 508 * its Control Response frame [...] at the highest rate in the 509 * BSSBasicRateSet parameter that is less than or equal to the 510 * rate of the immediately previous frame in the frame exchange 511 * sequence ([...]) and that is of the same modulation class 512 * ([...]) as the received frame. If no rate contained in the 513 * BSSBasicRateSet parameter meets these conditions, then the 514 * control frame sent in response to a received frame shall be 515 * transmitted at the highest mandatory rate of the PHY that is 516 * less than or equal to the rate of the received frame, and 517 * that is of the same modulation class as the received frame. 518 * 519 * As a consequence, we need to add all mandatory rates that are 520 * lower than all of the basic rates to these bitmaps. 521 */ 522 523 if (IWL_RATE_24M_INDEX < lowest_present_ofdm) 524 ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; 525 if (IWL_RATE_12M_INDEX < lowest_present_ofdm) 526 ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; 527 /* 6M already there or needed so always add */ 528 ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; 529 530 /* 531 * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. 532 * Note, however: 533 * - if no CCK rates are basic, it must be ERP since there must 534 * be some basic rates at all, so they're OFDM => ERP PHY 535 * (or we're in 5 GHz, and the cck bitmap will never be used) 536 * - if 11M is a basic rate, it must be ERP as well, so add 5.5M 537 * - if 5.5M is basic, 1M and 2M are mandatory 538 * - if 2M is basic, 1M is mandatory 539 * - if 1M is basic, that's the only valid ACK rate. 540 * As a consequence, it's not as complicated as it sounds, just add 541 * any lower rates to the ACK rate bitmap. 542 */ 543 if (IWL_RATE_11M_INDEX < lowest_present_cck) 544 cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; 545 if (IWL_RATE_5M_INDEX < lowest_present_cck) 546 cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; 547 if (IWL_RATE_2M_INDEX < lowest_present_cck) 548 cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; 549 /* 1M already there or needed so always add */ 550 cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; 551 552 *cck_rates = cck; 553 *ofdm_rates = ofdm; 554 } 555 556 static void iwl_mvm_mac_ctxt_set_ht_flags(struct iwl_mvm *mvm, 557 struct ieee80211_vif *vif, 558 struct iwl_mac_ctx_cmd *cmd) 559 { 560 /* for both sta and ap, ht_operation_mode hold the protection_mode */ 561 u8 protection_mode = vif->bss_conf.ht_operation_mode & 562 IEEE80211_HT_OP_MODE_PROTECTION; 563 /* The fw does not distinguish between ht and fat */ 564 u32 ht_flag = MAC_PROT_FLG_HT_PROT | MAC_PROT_FLG_FAT_PROT; 565 566 IWL_DEBUG_RATE(mvm, "protection mode set to %d\n", protection_mode); 567 /* 568 * See section 9.23.3.1 of IEEE 80211-2012. 569 * Nongreenfield HT STAs Present is not supported. 570 */ 571 switch (protection_mode) { 572 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 573 break; 574 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 575 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 576 cmd->protection_flags |= cpu_to_le32(ht_flag); 577 break; 578 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 579 /* Protect when channel wider than 20MHz */ 580 if (vif->bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) 581 cmd->protection_flags |= cpu_to_le32(ht_flag); 582 break; 583 default: 584 IWL_ERR(mvm, "Illegal protection mode %d\n", 585 protection_mode); 586 break; 587 } 588 } 589 590 static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, 591 struct ieee80211_vif *vif, 592 struct iwl_mac_ctx_cmd *cmd, 593 const u8 *bssid_override, 594 u32 action) 595 { 596 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 597 struct ieee80211_chanctx_conf *chanctx; 598 bool ht_enabled = !!(vif->bss_conf.ht_operation_mode & 599 IEEE80211_HT_OP_MODE_PROTECTION); 600 u8 cck_ack_rates, ofdm_ack_rates; 601 const u8 *bssid = bssid_override ?: vif->bss_conf.bssid; 602 int i; 603 604 cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 605 mvmvif->color)); 606 cmd->action = cpu_to_le32(action); 607 608 switch (vif->type) { 609 case NL80211_IFTYPE_STATION: 610 if (vif->p2p) 611 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); 612 else 613 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); 614 break; 615 case NL80211_IFTYPE_AP: 616 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); 617 break; 618 case NL80211_IFTYPE_MONITOR: 619 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); 620 break; 621 case NL80211_IFTYPE_P2P_DEVICE: 622 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); 623 break; 624 case NL80211_IFTYPE_ADHOC: 625 cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); 626 break; 627 default: 628 WARN_ON_ONCE(1); 629 } 630 631 cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); 632 633 memcpy(cmd->node_addr, vif->addr, ETH_ALEN); 634 635 if (bssid) 636 memcpy(cmd->bssid_addr, bssid, ETH_ALEN); 637 else 638 eth_broadcast_addr(cmd->bssid_addr); 639 640 rcu_read_lock(); 641 chanctx = rcu_dereference(vif->chanctx_conf); 642 iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band 643 : NL80211_BAND_2GHZ, 644 &cck_ack_rates, &ofdm_ack_rates); 645 rcu_read_unlock(); 646 647 cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); 648 cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); 649 650 cmd->cck_short_preamble = 651 cpu_to_le32(vif->bss_conf.use_short_preamble ? 652 MAC_FLG_SHORT_PREAMBLE : 0); 653 cmd->short_slot = 654 cpu_to_le32(vif->bss_conf.use_short_slot ? 655 MAC_FLG_SHORT_SLOT : 0); 656 657 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); 658 659 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 660 u8 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, i); 661 662 cmd->ac[txf].cw_min = 663 cpu_to_le16(mvmvif->queue_params[i].cw_min); 664 cmd->ac[txf].cw_max = 665 cpu_to_le16(mvmvif->queue_params[i].cw_max); 666 cmd->ac[txf].edca_txop = 667 cpu_to_le16(mvmvif->queue_params[i].txop * 32); 668 cmd->ac[txf].aifsn = mvmvif->queue_params[i].aifs; 669 cmd->ac[txf].fifos_mask = BIT(txf); 670 } 671 672 if (vif->bss_conf.qos) 673 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); 674 675 if (vif->bss_conf.use_cts_prot) 676 cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 677 678 IWL_DEBUG_RATE(mvm, "use_cts_prot %d, ht_operation_mode %d\n", 679 vif->bss_conf.use_cts_prot, 680 vif->bss_conf.ht_operation_mode); 681 if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) 682 cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); 683 if (ht_enabled) 684 iwl_mvm_mac_ctxt_set_ht_flags(mvm, vif, cmd); 685 } 686 687 static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, 688 struct iwl_mac_ctx_cmd *cmd) 689 { 690 int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 691 sizeof(*cmd), cmd); 692 if (ret) 693 IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", 694 le32_to_cpu(cmd->action), ret); 695 return ret; 696 } 697 698 static int iwl_mvm_mac_ctxt_cmd_sta(struct iwl_mvm *mvm, 699 struct ieee80211_vif *vif, 700 u32 action, bool force_assoc_off, 701 const u8 *bssid_override) 702 { 703 struct iwl_mac_ctx_cmd cmd = {}; 704 struct iwl_mac_data_sta *ctxt_sta; 705 706 WARN_ON(vif->type != NL80211_IFTYPE_STATION); 707 708 /* Fill the common data for all mac context types */ 709 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, bssid_override, action); 710 711 if (vif->p2p) { 712 struct ieee80211_p2p_noa_attr *noa = 713 &vif->bss_conf.p2p_noa_attr; 714 715 cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & 716 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 717 ctxt_sta = &cmd.p2p_sta.sta; 718 } else { 719 ctxt_sta = &cmd.sta; 720 } 721 722 /* We need the dtim_period to set the MAC as associated */ 723 if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && 724 !force_assoc_off) { 725 u32 dtim_offs; 726 727 /* 728 * The DTIM count counts down, so when it is N that means N 729 * more beacon intervals happen until the DTIM TBTT. Therefore 730 * add this to the current time. If that ends up being in the 731 * future, the firmware will handle it. 732 * 733 * Also note that the system_timestamp (which we get here as 734 * "sync_device_ts") and TSF timestamp aren't at exactly the 735 * same offset in the frame -- the TSF is at the first symbol 736 * of the TSF, the system timestamp is at signal acquisition 737 * time. This means there's an offset between them of at most 738 * a few hundred microseconds (24 * 8 bits + PLCP time gives 739 * 384us in the longest case), this is currently not relevant 740 * as the firmware wakes up around 2ms before the TBTT. 741 */ 742 dtim_offs = vif->bss_conf.sync_dtim_count * 743 vif->bss_conf.beacon_int; 744 /* convert TU to usecs */ 745 dtim_offs *= 1024; 746 747 ctxt_sta->dtim_tsf = 748 cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); 749 ctxt_sta->dtim_time = 750 cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); 751 ctxt_sta->assoc_beacon_arrive_time = 752 cpu_to_le32(vif->bss_conf.sync_device_ts); 753 754 IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", 755 le64_to_cpu(ctxt_sta->dtim_tsf), 756 le32_to_cpu(ctxt_sta->dtim_time), 757 dtim_offs); 758 759 ctxt_sta->is_assoc = cpu_to_le32(1); 760 } else { 761 ctxt_sta->is_assoc = cpu_to_le32(0); 762 763 /* Allow beacons to pass through as long as we are not 764 * associated, or we do not have dtim period information. 765 */ 766 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 767 } 768 769 ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); 770 ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 771 vif->bss_conf.dtim_period); 772 773 ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); 774 ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); 775 776 if (vif->probe_req_reg && vif->bss_conf.assoc && vif->p2p) 777 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 778 779 if (vif->bss_conf.assoc && vif->bss_conf.he_support && 780 !iwlwifi_mod_params.disable_11ax) { 781 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 782 u8 sta_id = mvmvif->ap_sta_id; 783 784 cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 785 if (sta_id != IWL_MVM_INVALID_STA) { 786 struct ieee80211_sta *sta; 787 788 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 789 lockdep_is_held(&mvm->mutex)); 790 791 /* 792 * TODO: we should check the ext cap IE but it is 793 * unclear why the spec requires two bits (one in HE 794 * cap IE, and one in the ext cap IE). In the meantime 795 * rely on the HE cap IE only. 796 */ 797 if (sta && (sta->he_cap.he_cap_elem.mac_cap_info[0] & 798 IEEE80211_HE_MAC_CAP0_TWT_RES)) 799 ctxt_sta->data_policy |= 800 cpu_to_le32(TWT_SUPPORTED); 801 } 802 } 803 804 805 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 806 } 807 808 static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, 809 struct ieee80211_vif *vif, 810 u32 action) 811 { 812 struct iwl_mac_ctx_cmd cmd = {}; 813 u32 tfd_queue_msk = BIT(mvm->snif_queue); 814 int ret; 815 816 WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); 817 818 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 819 820 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | 821 MAC_FILTER_IN_CONTROL_AND_MGMT | 822 MAC_FILTER_IN_BEACON | 823 MAC_FILTER_IN_PROBE_REQUEST | 824 MAC_FILTER_IN_CRC32); 825 ieee80211_hw_set(mvm->hw, RX_INCLUDES_FCS); 826 827 /* Allocate sniffer station */ 828 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->snif_sta, tfd_queue_msk, 829 vif->type, IWL_STA_GENERAL_PURPOSE); 830 if (ret) 831 return ret; 832 833 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 834 } 835 836 static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, 837 struct ieee80211_vif *vif, 838 u32 action) 839 { 840 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 841 struct iwl_mac_ctx_cmd cmd = {}; 842 843 WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); 844 845 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 846 847 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | 848 MAC_FILTER_IN_PROBE_REQUEST); 849 850 /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ 851 cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); 852 853 /* TODO: Assumes that the beacon id == mac context id */ 854 cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); 855 856 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 857 } 858 859 struct iwl_mvm_go_iterator_data { 860 bool go_active; 861 }; 862 863 static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) 864 { 865 struct iwl_mvm_go_iterator_data *data = _data; 866 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 867 868 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 869 mvmvif->ap_ibss_active) 870 data->go_active = true; 871 } 872 873 static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, 874 struct ieee80211_vif *vif, 875 u32 action) 876 { 877 struct iwl_mac_ctx_cmd cmd = {}; 878 struct iwl_mvm_go_iterator_data data = {}; 879 880 WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); 881 882 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 883 884 cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); 885 886 /* Override the filter flags to accept only probe requests */ 887 cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 888 889 /* 890 * This flag should be set to true when the P2P Device is 891 * discoverable and there is at least another active P2P GO. Settings 892 * this flag will allow the P2P Device to be discoverable on other 893 * channels in addition to its listen channel. 894 * Note that this flag should not be set in other cases as it opens the 895 * Rx filters on all MAC and increases the number of interrupts. 896 */ 897 ieee80211_iterate_active_interfaces_atomic( 898 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 899 iwl_mvm_go_iterator, &data); 900 901 cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); 902 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 903 } 904 905 static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, 906 __le32 *tim_index, __le32 *tim_size, 907 u8 *beacon, u32 frame_size) 908 { 909 u32 tim_idx; 910 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; 911 912 /* The index is relative to frame start but we start looking at the 913 * variable-length part of the beacon. */ 914 tim_idx = mgmt->u.beacon.variable - beacon; 915 916 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ 917 while ((tim_idx < (frame_size - 2)) && 918 (beacon[tim_idx] != WLAN_EID_TIM)) 919 tim_idx += beacon[tim_idx+1] + 2; 920 921 /* If TIM field was found, set variables */ 922 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { 923 *tim_index = cpu_to_le32(tim_idx); 924 *tim_size = cpu_to_le32((u32)beacon[tim_idx + 1]); 925 } else { 926 IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); 927 } 928 } 929 930 static u32 iwl_mvm_find_ie_offset(u8 *beacon, u8 eid, u32 frame_size) 931 { 932 struct ieee80211_mgmt *mgmt = (void *)beacon; 933 const u8 *ie; 934 935 if (WARN_ON_ONCE(frame_size <= (mgmt->u.beacon.variable - beacon))) 936 return 0; 937 938 frame_size -= mgmt->u.beacon.variable - beacon; 939 940 ie = cfg80211_find_ie(eid, mgmt->u.beacon.variable, frame_size); 941 if (!ie) 942 return 0; 943 944 return ie - beacon; 945 } 946 947 static u8 iwl_mvm_mac_ctxt_get_lowest_rate(struct ieee80211_tx_info *info, 948 struct ieee80211_vif *vif) 949 { 950 u8 rate; 951 952 if (info->band == NL80211_BAND_5GHZ || vif->p2p) 953 rate = IWL_FIRST_OFDM_RATE; 954 else 955 rate = IWL_FIRST_CCK_RATE; 956 957 return rate; 958 } 959 960 static void iwl_mvm_mac_ctxt_set_tx(struct iwl_mvm *mvm, 961 struct ieee80211_vif *vif, 962 struct sk_buff *beacon, 963 struct iwl_tx_cmd *tx) 964 { 965 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 966 struct ieee80211_tx_info *info; 967 u8 rate; 968 u32 tx_flags; 969 970 info = IEEE80211_SKB_CB(beacon); 971 972 /* Set up TX command fields */ 973 tx->len = cpu_to_le16((u16)beacon->len); 974 tx->sta_id = mvmvif->bcast_sta.sta_id; 975 tx->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); 976 tx_flags = TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_TSF; 977 tx_flags |= 978 iwl_mvm_bt_coex_tx_prio(mvm, (void *)beacon->data, info, 0) << 979 TX_CMD_FLG_BT_PRIO_POS; 980 tx->tx_flags = cpu_to_le32(tx_flags); 981 982 if (!fw_has_capa(&mvm->fw->ucode_capa, 983 IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION)) 984 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); 985 986 tx->rate_n_flags = 987 cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << 988 RATE_MCS_ANT_POS); 989 990 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 991 992 tx->rate_n_flags |= cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); 993 if (rate == IWL_FIRST_CCK_RATE) 994 tx->rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); 995 996 } 997 998 static int iwl_mvm_mac_ctxt_send_beacon_cmd(struct iwl_mvm *mvm, 999 struct sk_buff *beacon, 1000 void *data, int len) 1001 { 1002 struct iwl_host_cmd cmd = { 1003 .id = BEACON_TEMPLATE_CMD, 1004 .flags = CMD_ASYNC, 1005 }; 1006 1007 cmd.len[0] = len; 1008 cmd.data[0] = data; 1009 cmd.dataflags[0] = 0; 1010 cmd.len[1] = beacon->len; 1011 cmd.data[1] = beacon->data; 1012 cmd.dataflags[1] = IWL_HCMD_DFL_DUP; 1013 1014 return iwl_mvm_send_cmd(mvm, &cmd); 1015 } 1016 1017 static int iwl_mvm_mac_ctxt_send_beacon_v6(struct iwl_mvm *mvm, 1018 struct ieee80211_vif *vif, 1019 struct sk_buff *beacon) 1020 { 1021 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1022 struct iwl_mac_beacon_cmd_v6 beacon_cmd = {}; 1023 1024 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1025 1026 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1027 1028 if (vif->type == NL80211_IFTYPE_AP) 1029 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1030 &beacon_cmd.tim_size, 1031 beacon->data, beacon->len); 1032 1033 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1034 sizeof(beacon_cmd)); 1035 } 1036 1037 static int iwl_mvm_mac_ctxt_send_beacon_v7(struct iwl_mvm *mvm, 1038 struct ieee80211_vif *vif, 1039 struct sk_buff *beacon) 1040 { 1041 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1042 struct iwl_mac_beacon_cmd_v7 beacon_cmd = {}; 1043 1044 iwl_mvm_mac_ctxt_set_tx(mvm, vif, beacon, &beacon_cmd.tx); 1045 1046 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1047 1048 if (vif->type == NL80211_IFTYPE_AP) 1049 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1050 &beacon_cmd.tim_size, 1051 beacon->data, beacon->len); 1052 1053 beacon_cmd.csa_offset = 1054 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1055 WLAN_EID_CHANNEL_SWITCH, 1056 beacon->len)); 1057 beacon_cmd.ecsa_offset = 1058 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1059 WLAN_EID_EXT_CHANSWITCH_ANN, 1060 beacon->len)); 1061 1062 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1063 sizeof(beacon_cmd)); 1064 } 1065 1066 static int iwl_mvm_mac_ctxt_send_beacon_v9(struct iwl_mvm *mvm, 1067 struct ieee80211_vif *vif, 1068 struct sk_buff *beacon) 1069 { 1070 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1071 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(beacon); 1072 struct iwl_mac_beacon_cmd beacon_cmd = {}; 1073 u8 rate = iwl_mvm_mac_ctxt_get_lowest_rate(info, vif); 1074 u16 flags; 1075 1076 flags = iwl_mvm_mac80211_idx_to_hwrate(rate); 1077 1078 if (rate == IWL_FIRST_CCK_RATE) 1079 flags |= IWL_MAC_BEACON_CCK; 1080 1081 beacon_cmd.flags = cpu_to_le16(flags); 1082 beacon_cmd.byte_cnt = cpu_to_le16((u16)beacon->len); 1083 beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); 1084 1085 if (vif->type == NL80211_IFTYPE_AP) 1086 iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd.tim_idx, 1087 &beacon_cmd.tim_size, 1088 beacon->data, beacon->len); 1089 1090 beacon_cmd.csa_offset = 1091 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1092 WLAN_EID_CHANNEL_SWITCH, 1093 beacon->len)); 1094 beacon_cmd.ecsa_offset = 1095 cpu_to_le32(iwl_mvm_find_ie_offset(beacon->data, 1096 WLAN_EID_EXT_CHANSWITCH_ANN, 1097 beacon->len)); 1098 1099 return iwl_mvm_mac_ctxt_send_beacon_cmd(mvm, beacon, &beacon_cmd, 1100 sizeof(beacon_cmd)); 1101 } 1102 1103 static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, 1104 struct ieee80211_vif *vif, 1105 struct sk_buff *beacon) 1106 { 1107 if (WARN_ON(!beacon)) 1108 return -EINVAL; 1109 1110 if (!fw_has_capa(&mvm->fw->ucode_capa, 1111 IWL_UCODE_TLV_CAPA_CSA_AND_TBTT_OFFLOAD)) 1112 return iwl_mvm_mac_ctxt_send_beacon_v6(mvm, vif, beacon); 1113 1114 if (fw_has_api(&mvm->fw->ucode_capa, 1115 IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE)) 1116 return iwl_mvm_mac_ctxt_send_beacon_v9(mvm, vif, beacon); 1117 1118 return iwl_mvm_mac_ctxt_send_beacon_v7(mvm, vif, beacon); 1119 } 1120 1121 /* The beacon template for the AP/GO/IBSS has changed and needs update */ 1122 int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, 1123 struct ieee80211_vif *vif) 1124 { 1125 struct sk_buff *beacon; 1126 int ret; 1127 1128 WARN_ON(vif->type != NL80211_IFTYPE_AP && 1129 vif->type != NL80211_IFTYPE_ADHOC); 1130 1131 beacon = ieee80211_beacon_get_template(mvm->hw, vif, NULL); 1132 if (!beacon) 1133 return -ENOMEM; 1134 1135 ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); 1136 dev_kfree_skb(beacon); 1137 return ret; 1138 } 1139 1140 struct iwl_mvm_mac_ap_iterator_data { 1141 struct iwl_mvm *mvm; 1142 struct ieee80211_vif *vif; 1143 u32 beacon_device_ts; 1144 u16 beacon_int; 1145 }; 1146 1147 /* Find the beacon_device_ts and beacon_int for a managed interface */ 1148 static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, 1149 struct ieee80211_vif *vif) 1150 { 1151 struct iwl_mvm_mac_ap_iterator_data *data = _data; 1152 1153 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) 1154 return; 1155 1156 /* Station client has higher priority over P2P client*/ 1157 if (vif->p2p && data->beacon_device_ts) 1158 return; 1159 1160 data->beacon_device_ts = vif->bss_conf.sync_device_ts; 1161 data->beacon_int = vif->bss_conf.beacon_int; 1162 } 1163 1164 /* 1165 * Fill the specific data for mac context of type AP of P2P GO 1166 */ 1167 static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, 1168 struct ieee80211_vif *vif, 1169 struct iwl_mac_ctx_cmd *cmd, 1170 struct iwl_mac_data_ap *ctxt_ap, 1171 bool add) 1172 { 1173 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1174 struct iwl_mvm_mac_ap_iterator_data data = { 1175 .mvm = mvm, 1176 .vif = vif, 1177 .beacon_device_ts = 0 1178 }; 1179 1180 /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ 1181 cmd->ac[IWL_MVM_TX_FIFO_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); 1182 1183 /* 1184 * in AP mode, pass probe requests and beacons from other APs 1185 * (needed for ht protection); when there're no any associated 1186 * station don't ask FW to pass beacons to prevent unnecessary 1187 * wake-ups. 1188 */ 1189 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); 1190 if (mvmvif->ap_assoc_sta_count || !mvm->drop_bcn_ap_mode) { 1191 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); 1192 IWL_DEBUG_HC(mvm, "Asking FW to pass beacons\n"); 1193 } else { 1194 IWL_DEBUG_HC(mvm, "No need to receive beacons\n"); 1195 } 1196 1197 if (vif->bss_conf.he_support && !iwlwifi_mod_params.disable_11ax) 1198 cmd->filter_flags |= cpu_to_le32(MAC_FILTER_IN_11AX); 1199 1200 ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); 1201 ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * 1202 vif->bss_conf.dtim_period); 1203 1204 if (!fw_has_api(&mvm->fw->ucode_capa, 1205 IWL_UCODE_TLV_API_STA_TYPE)) 1206 ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); 1207 1208 /* 1209 * Only set the beacon time when the MAC is being added, when we 1210 * just modify the MAC then we should keep the time -- the firmware 1211 * can otherwise have a "jumping" TBTT. 1212 */ 1213 if (add) { 1214 /* 1215 * If there is a station/P2P client interface which is 1216 * associated, set the AP's TBTT far enough from the station's 1217 * TBTT. Otherwise, set it to the current system time 1218 */ 1219 ieee80211_iterate_active_interfaces_atomic( 1220 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1221 iwl_mvm_mac_ap_iterator, &data); 1222 1223 if (data.beacon_device_ts) { 1224 u32 rand = (prandom_u32() % (64 - 36)) + 36; 1225 mvmvif->ap_beacon_time = data.beacon_device_ts + 1226 ieee80211_tu_to_usec(data.beacon_int * rand / 1227 100); 1228 } else { 1229 mvmvif->ap_beacon_time = 1230 iwl_read_prph(mvm->trans, 1231 DEVICE_SYSTEM_TIME_REG); 1232 } 1233 } 1234 1235 ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); 1236 ctxt_ap->beacon_tsf = 0; /* unused */ 1237 1238 /* TODO: Assume that the beacon id == mac context id */ 1239 ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); 1240 } 1241 1242 static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, 1243 struct ieee80211_vif *vif, 1244 u32 action) 1245 { 1246 struct iwl_mac_ctx_cmd cmd = {}; 1247 1248 WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); 1249 1250 /* Fill the common data for all mac context types */ 1251 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1252 1253 /* Fill the data specific for ap mode */ 1254 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.ap, 1255 action == FW_CTXT_ACTION_ADD); 1256 1257 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1258 } 1259 1260 static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, 1261 struct ieee80211_vif *vif, 1262 u32 action) 1263 { 1264 struct iwl_mac_ctx_cmd cmd = {}; 1265 struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; 1266 1267 WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); 1268 1269 /* Fill the common data for all mac context types */ 1270 iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, NULL, action); 1271 1272 /* Fill the data specific for GO mode */ 1273 iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd, &cmd.go.ap, 1274 action == FW_CTXT_ACTION_ADD); 1275 1276 cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & 1277 IEEE80211_P2P_OPPPS_CTWINDOW_MASK); 1278 cmd.go.opp_ps_enabled = 1279 cpu_to_le32(!!(noa->oppps_ctwindow & 1280 IEEE80211_P2P_OPPPS_ENABLE_BIT)); 1281 1282 return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); 1283 } 1284 1285 static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1286 u32 action, bool force_assoc_off, 1287 const u8 *bssid_override) 1288 { 1289 switch (vif->type) { 1290 case NL80211_IFTYPE_STATION: 1291 return iwl_mvm_mac_ctxt_cmd_sta(mvm, vif, action, 1292 force_assoc_off, 1293 bssid_override); 1294 break; 1295 case NL80211_IFTYPE_AP: 1296 if (!vif->p2p) 1297 return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); 1298 else 1299 return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); 1300 break; 1301 case NL80211_IFTYPE_MONITOR: 1302 return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); 1303 case NL80211_IFTYPE_P2P_DEVICE: 1304 return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); 1305 case NL80211_IFTYPE_ADHOC: 1306 return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); 1307 default: 1308 break; 1309 } 1310 1311 return -EOPNOTSUPP; 1312 } 1313 1314 int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1315 { 1316 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1317 int ret; 1318 1319 if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", 1320 vif->addr, ieee80211_vif_type_p2p(vif))) 1321 return -EIO; 1322 1323 ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD, 1324 true, NULL); 1325 if (ret) 1326 return ret; 1327 1328 /* will only do anything at resume from D3 time */ 1329 iwl_mvm_set_last_nonqos_seq(mvm, vif); 1330 1331 mvmvif->uploaded = true; 1332 return 0; 1333 } 1334 1335 int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1336 bool force_assoc_off, const u8 *bssid_override) 1337 { 1338 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1339 1340 if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", 1341 vif->addr, ieee80211_vif_type_p2p(vif))) 1342 return -EIO; 1343 1344 return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY, 1345 force_assoc_off, bssid_override); 1346 } 1347 1348 int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1349 { 1350 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1351 struct iwl_mac_ctx_cmd cmd; 1352 int ret; 1353 1354 if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", 1355 vif->addr, ieee80211_vif_type_p2p(vif))) 1356 return -EIO; 1357 1358 memset(&cmd, 0, sizeof(cmd)); 1359 1360 cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1361 mvmvif->color)); 1362 cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); 1363 1364 ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, 0, 1365 sizeof(cmd), &cmd); 1366 if (ret) { 1367 IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); 1368 return ret; 1369 } 1370 1371 mvmvif->uploaded = false; 1372 1373 if (vif->type == NL80211_IFTYPE_MONITOR) { 1374 __clear_bit(IEEE80211_HW_RX_INCLUDES_FCS, mvm->hw->flags); 1375 iwl_mvm_dealloc_snif_sta(mvm); 1376 } 1377 1378 return 0; 1379 } 1380 1381 static void iwl_mvm_csa_count_down(struct iwl_mvm *mvm, 1382 struct ieee80211_vif *csa_vif, u32 gp2, 1383 bool tx_success) 1384 { 1385 struct iwl_mvm_vif *mvmvif = 1386 iwl_mvm_vif_from_mac80211(csa_vif); 1387 1388 /* Don't start to countdown from a failed beacon */ 1389 if (!tx_success && !mvmvif->csa_countdown) 1390 return; 1391 1392 mvmvif->csa_countdown = true; 1393 1394 if (!ieee80211_csa_is_complete(csa_vif)) { 1395 int c = ieee80211_csa_update_counter(csa_vif); 1396 1397 iwl_mvm_mac_ctxt_beacon_changed(mvm, csa_vif); 1398 if (csa_vif->p2p && 1399 !iwl_mvm_te_scheduled(&mvmvif->time_event_data) && gp2 && 1400 tx_success) { 1401 u32 rel_time = (c + 1) * 1402 csa_vif->bss_conf.beacon_int - 1403 IWL_MVM_CHANNEL_SWITCH_TIME_GO; 1404 u32 apply_time = gp2 + rel_time * 1024; 1405 1406 iwl_mvm_schedule_csa_period(mvm, csa_vif, 1407 IWL_MVM_CHANNEL_SWITCH_TIME_GO - 1408 IWL_MVM_CHANNEL_SWITCH_MARGIN, 1409 apply_time); 1410 } 1411 } else if (!iwl_mvm_te_scheduled(&mvmvif->time_event_data)) { 1412 /* we don't have CSA NoA scheduled yet, switch now */ 1413 ieee80211_csa_finish(csa_vif); 1414 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1415 } 1416 } 1417 1418 void iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, 1419 struct iwl_rx_cmd_buffer *rxb) 1420 { 1421 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1422 struct iwl_extended_beacon_notif *beacon = (void *)pkt->data; 1423 struct iwl_mvm_tx_resp *beacon_notify_hdr; 1424 struct ieee80211_vif *csa_vif; 1425 struct ieee80211_vif *tx_blocked_vif; 1426 struct agg_tx_status *agg_status; 1427 u16 status; 1428 1429 lockdep_assert_held(&mvm->mutex); 1430 1431 beacon_notify_hdr = &beacon->beacon_notify_hdr; 1432 mvm->ap_last_beacon_gp2 = le32_to_cpu(beacon->gp2); 1433 mvm->ibss_manager = beacon->ibss_mgr_status != 0; 1434 1435 agg_status = iwl_mvm_get_agg_status(mvm, beacon_notify_hdr); 1436 status = le16_to_cpu(agg_status->status) & TX_STATUS_MSK; 1437 IWL_DEBUG_RX(mvm, 1438 "beacon status %#x retries:%d tsf:0x%16llX gp2:0x%X rate:%d\n", 1439 status, beacon_notify_hdr->failure_frame, 1440 le64_to_cpu(beacon->tsf), 1441 mvm->ap_last_beacon_gp2, 1442 le32_to_cpu(beacon_notify_hdr->initial_rate)); 1443 1444 csa_vif = rcu_dereference_protected(mvm->csa_vif, 1445 lockdep_is_held(&mvm->mutex)); 1446 if (unlikely(csa_vif && csa_vif->csa_active)) 1447 iwl_mvm_csa_count_down(mvm, csa_vif, mvm->ap_last_beacon_gp2, 1448 (status == TX_STATUS_SUCCESS)); 1449 1450 tx_blocked_vif = rcu_dereference_protected(mvm->csa_tx_blocked_vif, 1451 lockdep_is_held(&mvm->mutex)); 1452 if (unlikely(tx_blocked_vif)) { 1453 struct iwl_mvm_vif *mvmvif = 1454 iwl_mvm_vif_from_mac80211(tx_blocked_vif); 1455 1456 /* 1457 * The channel switch is started and we have blocked the 1458 * stations. If this is the first beacon (the timeout wasn't 1459 * set), set the unblock timeout, otherwise countdown 1460 */ 1461 if (!mvm->csa_tx_block_bcn_timeout) 1462 mvm->csa_tx_block_bcn_timeout = 1463 IWL_MVM_CS_UNBLOCK_TX_TIMEOUT; 1464 else 1465 mvm->csa_tx_block_bcn_timeout--; 1466 1467 /* Check if the timeout is expired, and unblock tx */ 1468 if (mvm->csa_tx_block_bcn_timeout == 0) { 1469 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false); 1470 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 1471 } 1472 } 1473 } 1474 1475 static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, 1476 struct ieee80211_vif *vif) 1477 { 1478 struct iwl_missed_beacons_notif *missed_beacons = _data; 1479 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1480 struct iwl_mvm *mvm = mvmvif->mvm; 1481 struct iwl_fw_dbg_trigger_missed_bcon *bcon_trig; 1482 struct iwl_fw_dbg_trigger_tlv *trigger; 1483 u32 stop_trig_missed_bcon, stop_trig_missed_bcon_since_rx; 1484 u32 rx_missed_bcon, rx_missed_bcon_since_rx; 1485 1486 if (mvmvif->id != (u16)le32_to_cpu(missed_beacons->mac_id)) 1487 return; 1488 1489 rx_missed_bcon = le32_to_cpu(missed_beacons->consec_missed_beacons); 1490 rx_missed_bcon_since_rx = 1491 le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx); 1492 /* 1493 * TODO: the threshold should be adjusted based on latency conditions, 1494 * and/or in case of a CS flow on one of the other AP vifs. 1495 */ 1496 if (le32_to_cpu(missed_beacons->consec_missed_beacons_since_last_rx) > 1497 IWL_MVM_MISSED_BEACONS_THRESHOLD) 1498 ieee80211_beacon_loss(vif); 1499 1500 trigger = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 1501 FW_DBG_TRIGGER_MISSED_BEACONS); 1502 if (!trigger) 1503 return; 1504 1505 bcon_trig = (void *)trigger->data; 1506 stop_trig_missed_bcon = le32_to_cpu(bcon_trig->stop_consec_missed_bcon); 1507 stop_trig_missed_bcon_since_rx = 1508 le32_to_cpu(bcon_trig->stop_consec_missed_bcon_since_rx); 1509 1510 /* TODO: implement start trigger */ 1511 1512 if (rx_missed_bcon_since_rx >= stop_trig_missed_bcon_since_rx || 1513 rx_missed_bcon >= stop_trig_missed_bcon) 1514 iwl_fw_dbg_collect_trig(&mvm->fwrt, trigger, NULL); 1515 } 1516 1517 void iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, 1518 struct iwl_rx_cmd_buffer *rxb) 1519 { 1520 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1521 struct iwl_missed_beacons_notif *mb = (void *)pkt->data; 1522 1523 IWL_DEBUG_INFO(mvm, 1524 "missed bcn mac_id=%u, consecutive=%u (%u, %u, %u)\n", 1525 le32_to_cpu(mb->mac_id), 1526 le32_to_cpu(mb->consec_missed_beacons), 1527 le32_to_cpu(mb->consec_missed_beacons_since_last_rx), 1528 le32_to_cpu(mb->num_recvd_beacons), 1529 le32_to_cpu(mb->num_expected_beacons)); 1530 1531 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 1532 IEEE80211_IFACE_ITER_NORMAL, 1533 iwl_mvm_beacon_loss_iterator, 1534 mb); 1535 1536 iwl_fw_dbg_apply_point(&mvm->fwrt, IWL_FW_INI_APPLY_MISSED_BEACONS); 1537 } 1538 1539 void iwl_mvm_rx_stored_beacon_notif(struct iwl_mvm *mvm, 1540 struct iwl_rx_cmd_buffer *rxb) 1541 { 1542 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1543 struct iwl_stored_beacon_notif *sb = (void *)pkt->data; 1544 struct ieee80211_rx_status rx_status; 1545 struct sk_buff *skb; 1546 u32 size = le32_to_cpu(sb->byte_count); 1547 1548 if (size == 0) 1549 return; 1550 1551 skb = alloc_skb(size, GFP_ATOMIC); 1552 if (!skb) { 1553 IWL_ERR(mvm, "alloc_skb failed\n"); 1554 return; 1555 } 1556 1557 /* update rx_status according to the notification's metadata */ 1558 memset(&rx_status, 0, sizeof(rx_status)); 1559 rx_status.mactime = le64_to_cpu(sb->tsf); 1560 /* TSF as indicated by the firmware is at INA time */ 1561 rx_status.flag |= RX_FLAG_MACTIME_PLCP_START; 1562 rx_status.device_timestamp = le32_to_cpu(sb->system_time); 1563 rx_status.band = 1564 (sb->band & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ? 1565 NL80211_BAND_2GHZ : NL80211_BAND_5GHZ; 1566 rx_status.freq = 1567 ieee80211_channel_to_frequency(le16_to_cpu(sb->channel), 1568 rx_status.band); 1569 1570 /* copy the data */ 1571 skb_put_data(skb, sb->data, size); 1572 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status)); 1573 1574 /* pass it as regular rx to mac80211 */ 1575 ieee80211_rx_napi(mvm->hw, NULL, skb, NULL); 1576 } 1577 1578 static void iwl_mvm_probe_resp_data_iter(void *_data, u8 *mac, 1579 struct ieee80211_vif *vif) 1580 { 1581 struct iwl_probe_resp_data_notif *notif = _data; 1582 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1583 struct iwl_probe_resp_data *old_data, *new_data; 1584 1585 if (mvmvif->id != (u16)le32_to_cpu(notif->mac_id)) 1586 return; 1587 1588 new_data = kzalloc(sizeof(*new_data), GFP_KERNEL); 1589 if (!new_data) 1590 return; 1591 1592 memcpy(&new_data->notif, notif, sizeof(new_data->notif)); 1593 1594 /* noa_attr contains 1 reserved byte, need to substruct it */ 1595 new_data->noa_len = sizeof(struct ieee80211_vendor_ie) + 1596 sizeof(new_data->notif.noa_attr) - 1; 1597 1598 /* 1599 * If it's a one time NoA, only one descriptor is needed, 1600 * adjust the length according to len_low. 1601 */ 1602 if (new_data->notif.noa_attr.len_low == 1603 sizeof(struct ieee80211_p2p_noa_desc) + 2) 1604 new_data->noa_len -= sizeof(struct ieee80211_p2p_noa_desc); 1605 1606 old_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1607 lockdep_is_held(&mvmvif->mvm->mutex)); 1608 rcu_assign_pointer(mvmvif->probe_resp_data, new_data); 1609 1610 if (old_data) 1611 kfree_rcu(old_data, rcu_head); 1612 1613 if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA && 1614 notif->csa_counter >= 1) 1615 ieee80211_csa_set_counter(vif, notif->csa_counter); 1616 } 1617 1618 void iwl_mvm_probe_resp_data_notif(struct iwl_mvm *mvm, 1619 struct iwl_rx_cmd_buffer *rxb) 1620 { 1621 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1622 struct iwl_probe_resp_data_notif *notif = (void *)pkt->data; 1623 int len = iwl_rx_packet_payload_len(pkt); 1624 1625 if (WARN_ON_ONCE(len < sizeof(*notif))) 1626 return; 1627 1628 IWL_DEBUG_INFO(mvm, "Probe response data notif: noa %d, csa %d\n", 1629 notif->noa_active, notif->csa_counter); 1630 1631 ieee80211_iterate_active_interfaces(mvm->hw, 1632 IEEE80211_IFACE_ITER_ACTIVE, 1633 iwl_mvm_probe_resp_data_iter, 1634 notif); 1635 } 1636 1637 void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, 1638 struct iwl_rx_cmd_buffer *rxb) 1639 { 1640 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1641 struct iwl_channel_switch_noa_notif *notif = (void *)pkt->data; 1642 struct ieee80211_vif *csa_vif; 1643 struct iwl_mvm_vif *mvmvif; 1644 int len = iwl_rx_packet_payload_len(pkt); 1645 u32 id_n_color; 1646 1647 if (WARN_ON_ONCE(len < sizeof(*notif))) 1648 return; 1649 1650 rcu_read_lock(); 1651 1652 csa_vif = rcu_dereference(mvm->csa_vif); 1653 if (WARN_ON(!csa_vif || !csa_vif->csa_active)) 1654 goto out_unlock; 1655 1656 id_n_color = le32_to_cpu(notif->id_and_color); 1657 1658 mvmvif = iwl_mvm_vif_from_mac80211(csa_vif); 1659 if (WARN(FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color) != id_n_color, 1660 "channel switch noa notification on unexpected vif (csa_vif=%d, notif=%d)", 1661 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color), id_n_color)) 1662 goto out_unlock; 1663 1664 IWL_DEBUG_INFO(mvm, "Channel Switch Started Notification\n"); 1665 1666 schedule_delayed_work(&mvm->cs_tx_unblock_dwork, 1667 msecs_to_jiffies(IWL_MVM_CS_UNBLOCK_TX_TIMEOUT * 1668 csa_vif->bss_conf.beacon_int)); 1669 1670 ieee80211_csa_finish(csa_vif); 1671 1672 rcu_read_unlock(); 1673 1674 RCU_INIT_POINTER(mvm->csa_vif, NULL); 1675 1676 return; 1677 1678 out_unlock: 1679 rcu_read_unlock(); 1680 } 1681