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 - 2015, 2018 - 2020 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 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) 2012 - 2015, 2018 - 2020 Intel Corporation. All rights reserved. 31 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 32 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 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 #include <net/mac80211.h> 63 64 #include "mvm.h" 65 #include "sta.h" 66 #include "rs.h" 67 68 /* 69 * New version of ADD_STA_sta command added new fields at the end of the 70 * structure, so sending the size of the relevant API's structure is enough to 71 * support both API versions. 72 */ 73 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 74 { 75 if (iwl_mvm_has_new_rx_api(mvm) || 76 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 77 return sizeof(struct iwl_mvm_add_sta_cmd); 78 else 79 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 80 } 81 82 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 83 enum nl80211_iftype iftype) 84 { 85 int sta_id; 86 u32 reserved_ids = 0; 87 88 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 89 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 90 91 lockdep_assert_held(&mvm->mutex); 92 93 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 94 if (iftype != NL80211_IFTYPE_STATION) 95 reserved_ids = BIT(0); 96 97 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 98 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 99 if (BIT(sta_id) & reserved_ids) 100 continue; 101 102 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 103 lockdep_is_held(&mvm->mutex))) 104 return sta_id; 105 } 106 return IWL_MVM_INVALID_STA; 107 } 108 109 /* send station add/update command to firmware */ 110 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 111 bool update, unsigned int flags) 112 { 113 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 114 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 115 .sta_id = mvm_sta->sta_id, 116 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 117 .add_modify = update ? 1 : 0, 118 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 119 STA_FLG_MIMO_EN_MSK | 120 STA_FLG_RTS_MIMO_PROT), 121 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 122 }; 123 int ret; 124 u32 status; 125 u32 agg_size = 0, mpdu_dens = 0; 126 127 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 128 add_sta_cmd.station_type = mvm_sta->sta_type; 129 130 if (!update || (flags & STA_MODIFY_QUEUES)) { 131 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 132 133 if (!iwl_mvm_has_new_tx_api(mvm)) { 134 add_sta_cmd.tfd_queue_msk = 135 cpu_to_le32(mvm_sta->tfd_queue_msk); 136 137 if (flags & STA_MODIFY_QUEUES) 138 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 139 } else { 140 WARN_ON(flags & STA_MODIFY_QUEUES); 141 } 142 } 143 144 switch (sta->bandwidth) { 145 case IEEE80211_STA_RX_BW_160: 146 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 147 /* fall through */ 148 case IEEE80211_STA_RX_BW_80: 149 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 150 /* fall through */ 151 case IEEE80211_STA_RX_BW_40: 152 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 153 /* fall through */ 154 case IEEE80211_STA_RX_BW_20: 155 if (sta->ht_cap.ht_supported) 156 add_sta_cmd.station_flags |= 157 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 158 break; 159 } 160 161 switch (sta->rx_nss) { 162 case 1: 163 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 164 break; 165 case 2: 166 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 167 break; 168 case 3 ... 8: 169 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 170 break; 171 } 172 173 switch (sta->smps_mode) { 174 case IEEE80211_SMPS_AUTOMATIC: 175 case IEEE80211_SMPS_NUM_MODES: 176 WARN_ON(1); 177 break; 178 case IEEE80211_SMPS_STATIC: 179 /* override NSS */ 180 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 181 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 182 break; 183 case IEEE80211_SMPS_DYNAMIC: 184 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 185 break; 186 case IEEE80211_SMPS_OFF: 187 /* nothing */ 188 break; 189 } 190 191 if (sta->ht_cap.ht_supported) { 192 add_sta_cmd.station_flags_msk |= 193 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 194 STA_FLG_AGG_MPDU_DENS_MSK); 195 196 mpdu_dens = sta->ht_cap.ampdu_density; 197 } 198 199 if (sta->vht_cap.vht_supported) { 200 agg_size = sta->vht_cap.cap & 201 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 202 agg_size >>= 203 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 204 } else if (sta->ht_cap.ht_supported) { 205 agg_size = sta->ht_cap.ampdu_factor; 206 } 207 208 add_sta_cmd.station_flags |= 209 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 210 add_sta_cmd.station_flags |= 211 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 212 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 213 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 214 215 if (sta->wme) { 216 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 217 218 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 219 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 220 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 221 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 222 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 223 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 224 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 225 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 226 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 227 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 228 } 229 230 status = ADD_STA_SUCCESS; 231 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 232 iwl_mvm_add_sta_cmd_size(mvm), 233 &add_sta_cmd, &status); 234 if (ret) 235 return ret; 236 237 switch (status & IWL_ADD_STA_STATUS_MASK) { 238 case ADD_STA_SUCCESS: 239 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 240 break; 241 default: 242 ret = -EIO; 243 IWL_ERR(mvm, "ADD_STA failed\n"); 244 break; 245 } 246 247 return ret; 248 } 249 250 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 251 { 252 struct iwl_mvm_baid_data *data = 253 from_timer(data, t, session_timer); 254 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 255 struct iwl_mvm_baid_data *ba_data; 256 struct ieee80211_sta *sta; 257 struct iwl_mvm_sta *mvm_sta; 258 unsigned long timeout; 259 260 rcu_read_lock(); 261 262 ba_data = rcu_dereference(*rcu_ptr); 263 264 if (WARN_ON(!ba_data)) 265 goto unlock; 266 267 if (!ba_data->timeout) 268 goto unlock; 269 270 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 271 if (time_is_after_jiffies(timeout)) { 272 mod_timer(&ba_data->session_timer, timeout); 273 goto unlock; 274 } 275 276 /* Timer expired */ 277 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 278 279 /* 280 * sta should be valid unless the following happens: 281 * The firmware asserts which triggers a reconfig flow, but 282 * the reconfig fails before we set the pointer to sta into 283 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 284 * A-MDPU and hence the timer continues to run. Then, the 285 * timer expires and sta is NULL. 286 */ 287 if (!sta) 288 goto unlock; 289 290 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 291 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 292 sta->addr, ba_data->tid); 293 unlock: 294 rcu_read_unlock(); 295 } 296 297 /* Disable aggregations for a bitmap of TIDs for a given station */ 298 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 299 unsigned long disable_agg_tids, 300 bool remove_queue) 301 { 302 struct iwl_mvm_add_sta_cmd cmd = {}; 303 struct ieee80211_sta *sta; 304 struct iwl_mvm_sta *mvmsta; 305 u32 status; 306 u8 sta_id; 307 308 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 309 return -EINVAL; 310 311 sta_id = mvm->queue_info[queue].ra_sta_id; 312 313 rcu_read_lock(); 314 315 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 316 317 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 318 rcu_read_unlock(); 319 return -EINVAL; 320 } 321 322 mvmsta = iwl_mvm_sta_from_mac80211(sta); 323 324 mvmsta->tid_disable_agg |= disable_agg_tids; 325 326 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 327 cmd.sta_id = mvmsta->sta_id; 328 cmd.add_modify = STA_MODE_MODIFY; 329 cmd.modify_mask = STA_MODIFY_QUEUES; 330 if (disable_agg_tids) 331 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 332 if (remove_queue) 333 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 334 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 335 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 336 337 rcu_read_unlock(); 338 339 /* Notify FW of queue removal from the STA queues */ 340 status = ADD_STA_SUCCESS; 341 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 342 iwl_mvm_add_sta_cmd_size(mvm), 343 &cmd, &status); 344 } 345 346 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 347 int queue, u8 tid, u8 flags) 348 { 349 struct iwl_scd_txq_cfg_cmd cmd = { 350 .scd_queue = queue, 351 .action = SCD_CFG_DISABLE_QUEUE, 352 }; 353 int ret; 354 355 if (iwl_mvm_has_new_tx_api(mvm)) { 356 iwl_trans_txq_free(mvm->trans, queue); 357 358 return 0; 359 } 360 361 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 362 return 0; 363 364 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 365 366 cmd.action = mvm->queue_info[queue].tid_bitmap ? 367 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 368 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 369 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 370 371 IWL_DEBUG_TX_QUEUES(mvm, 372 "Disabling TXQ #%d tids=0x%x\n", 373 queue, 374 mvm->queue_info[queue].tid_bitmap); 375 376 /* If the queue is still enabled - nothing left to do in this func */ 377 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 378 return 0; 379 380 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 381 cmd.tid = mvm->queue_info[queue].txq_tid; 382 383 /* Make sure queue info is correct even though we overwrite it */ 384 WARN(mvm->queue_info[queue].tid_bitmap, 385 "TXQ #%d info out-of-sync - tids=0x%x\n", 386 queue, mvm->queue_info[queue].tid_bitmap); 387 388 /* If we are here - the queue is freed and we can zero out these vals */ 389 mvm->queue_info[queue].tid_bitmap = 0; 390 391 if (sta) { 392 struct iwl_mvm_txq *mvmtxq = 393 iwl_mvm_txq_from_tid(sta, tid); 394 395 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 396 } 397 398 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 399 mvm->queue_info[queue].reserved = false; 400 401 iwl_trans_txq_disable(mvm->trans, queue, false); 402 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 403 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 404 405 if (ret) 406 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 407 queue, ret); 408 return ret; 409 } 410 411 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 412 { 413 struct ieee80211_sta *sta; 414 struct iwl_mvm_sta *mvmsta; 415 unsigned long tid_bitmap; 416 unsigned long agg_tids = 0; 417 u8 sta_id; 418 int tid; 419 420 lockdep_assert_held(&mvm->mutex); 421 422 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 423 return -EINVAL; 424 425 sta_id = mvm->queue_info[queue].ra_sta_id; 426 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 427 428 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 429 lockdep_is_held(&mvm->mutex)); 430 431 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 432 return -EINVAL; 433 434 mvmsta = iwl_mvm_sta_from_mac80211(sta); 435 436 spin_lock_bh(&mvmsta->lock); 437 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 438 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 439 agg_tids |= BIT(tid); 440 } 441 spin_unlock_bh(&mvmsta->lock); 442 443 return agg_tids; 444 } 445 446 /* 447 * Remove a queue from a station's resources. 448 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 449 * doesn't disable the queue 450 */ 451 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 452 { 453 struct ieee80211_sta *sta; 454 struct iwl_mvm_sta *mvmsta; 455 unsigned long tid_bitmap; 456 unsigned long disable_agg_tids = 0; 457 u8 sta_id; 458 int tid; 459 460 lockdep_assert_held(&mvm->mutex); 461 462 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 463 return -EINVAL; 464 465 sta_id = mvm->queue_info[queue].ra_sta_id; 466 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 467 468 rcu_read_lock(); 469 470 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 471 472 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 473 rcu_read_unlock(); 474 return 0; 475 } 476 477 mvmsta = iwl_mvm_sta_from_mac80211(sta); 478 479 spin_lock_bh(&mvmsta->lock); 480 /* Unmap MAC queues and TIDs from this queue */ 481 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 482 struct iwl_mvm_txq *mvmtxq = 483 iwl_mvm_txq_from_tid(sta, tid); 484 485 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 486 disable_agg_tids |= BIT(tid); 487 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 488 489 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 490 } 491 492 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 493 spin_unlock_bh(&mvmsta->lock); 494 495 rcu_read_unlock(); 496 497 /* 498 * The TX path may have been using this TXQ_ID from the tid_data, 499 * so make sure it's no longer running so that we can safely reuse 500 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 501 * above, but nothing guarantees we've stopped using them. Thus, 502 * without this, we could get to iwl_mvm_disable_txq() and remove 503 * the queue while still sending frames to it. 504 */ 505 synchronize_net(); 506 507 return disable_agg_tids; 508 } 509 510 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 511 struct ieee80211_sta *old_sta, 512 u8 new_sta_id) 513 { 514 struct iwl_mvm_sta *mvmsta; 515 u8 sta_id, tid; 516 unsigned long disable_agg_tids = 0; 517 bool same_sta; 518 int ret; 519 520 lockdep_assert_held(&mvm->mutex); 521 522 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 523 return -EINVAL; 524 525 sta_id = mvm->queue_info[queue].ra_sta_id; 526 tid = mvm->queue_info[queue].txq_tid; 527 528 same_sta = sta_id == new_sta_id; 529 530 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 531 if (WARN_ON(!mvmsta)) 532 return -EINVAL; 533 534 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 535 /* Disable the queue */ 536 if (disable_agg_tids) 537 iwl_mvm_invalidate_sta_queue(mvm, queue, 538 disable_agg_tids, false); 539 540 ret = iwl_mvm_disable_txq(mvm, old_sta, queue, tid, 0); 541 if (ret) { 542 IWL_ERR(mvm, 543 "Failed to free inactive queue %d (ret=%d)\n", 544 queue, ret); 545 546 return ret; 547 } 548 549 /* If TXQ is allocated to another STA, update removal in FW */ 550 if (!same_sta) 551 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 552 553 return 0; 554 } 555 556 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 557 unsigned long tfd_queue_mask, u8 ac) 558 { 559 int queue = 0; 560 u8 ac_to_queue[IEEE80211_NUM_ACS]; 561 int i; 562 563 /* 564 * This protects us against grabbing a queue that's being reconfigured 565 * by the inactivity checker. 566 */ 567 lockdep_assert_held(&mvm->mutex); 568 569 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 570 return -EINVAL; 571 572 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 573 574 /* See what ACs the existing queues for this STA have */ 575 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 576 /* Only DATA queues can be shared */ 577 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 578 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 579 continue; 580 581 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 582 } 583 584 /* 585 * The queue to share is chosen only from DATA queues as follows (in 586 * descending priority): 587 * 1. An AC_BE queue 588 * 2. Same AC queue 589 * 3. Highest AC queue that is lower than new AC 590 * 4. Any existing AC (there always is at least 1 DATA queue) 591 */ 592 593 /* Priority 1: An AC_BE queue */ 594 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 595 queue = ac_to_queue[IEEE80211_AC_BE]; 596 /* Priority 2: Same AC queue */ 597 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 598 queue = ac_to_queue[ac]; 599 /* Priority 3a: If new AC is VO and VI exists - use VI */ 600 else if (ac == IEEE80211_AC_VO && 601 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 602 queue = ac_to_queue[IEEE80211_AC_VI]; 603 /* Priority 3b: No BE so only AC less than the new one is BK */ 604 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 605 queue = ac_to_queue[IEEE80211_AC_BK]; 606 /* Priority 4a: No BE nor BK - use VI if exists */ 607 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 608 queue = ac_to_queue[IEEE80211_AC_VI]; 609 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 610 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 611 queue = ac_to_queue[IEEE80211_AC_VO]; 612 613 /* Make sure queue found (or not) is legal */ 614 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 615 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 616 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 617 IWL_ERR(mvm, "No DATA queues available to share\n"); 618 return -ENOSPC; 619 } 620 621 return queue; 622 } 623 624 /* 625 * If a given queue has a higher AC than the TID stream that is being compared 626 * to, the queue needs to be redirected to the lower AC. This function does that 627 * in such a case, otherwise - if no redirection required - it does nothing, 628 * unless the %force param is true. 629 */ 630 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 631 int ac, int ssn, unsigned int wdg_timeout, 632 bool force, struct iwl_mvm_txq *txq) 633 { 634 struct iwl_scd_txq_cfg_cmd cmd = { 635 .scd_queue = queue, 636 .action = SCD_CFG_DISABLE_QUEUE, 637 }; 638 bool shared_queue; 639 int ret; 640 641 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 642 return -EINVAL; 643 644 /* 645 * If the AC is lower than current one - FIFO needs to be redirected to 646 * the lowest one of the streams in the queue. Check if this is needed 647 * here. 648 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 649 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 650 * we need to check if the numerical value of X is LARGER than of Y. 651 */ 652 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 653 IWL_DEBUG_TX_QUEUES(mvm, 654 "No redirection needed on TXQ #%d\n", 655 queue); 656 return 0; 657 } 658 659 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 660 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 661 cmd.tid = mvm->queue_info[queue].txq_tid; 662 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 663 664 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 665 queue, iwl_mvm_ac_to_tx_fifo[ac]); 666 667 /* Stop the queue and wait for it to empty */ 668 txq->stopped = true; 669 670 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 671 if (ret) { 672 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 673 queue); 674 ret = -EIO; 675 goto out; 676 } 677 678 /* Before redirecting the queue we need to de-activate it */ 679 iwl_trans_txq_disable(mvm->trans, queue, false); 680 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 681 if (ret) 682 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 683 ret); 684 685 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 686 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 687 688 /* Update the TID "owner" of the queue */ 689 mvm->queue_info[queue].txq_tid = tid; 690 691 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 692 693 /* Redirect to lower AC */ 694 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 695 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 696 697 /* Update AC marking of the queue */ 698 mvm->queue_info[queue].mac80211_ac = ac; 699 700 /* 701 * Mark queue as shared in transport if shared 702 * Note this has to be done after queue enablement because enablement 703 * can also set this value, and there is no indication there to shared 704 * queues 705 */ 706 if (shared_queue) 707 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 708 709 out: 710 /* Continue using the queue */ 711 txq->stopped = false; 712 713 return ret; 714 } 715 716 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 717 u8 minq, u8 maxq) 718 { 719 int i; 720 721 lockdep_assert_held(&mvm->mutex); 722 723 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 724 "max queue %d >= num_of_queues (%d)", maxq, 725 mvm->trans->trans_cfg->base_params->num_of_queues)) 726 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 727 728 /* This should not be hit with new TX path */ 729 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 730 return -ENOSPC; 731 732 /* Start by looking for a free queue */ 733 for (i = minq; i <= maxq; i++) 734 if (mvm->queue_info[i].tid_bitmap == 0 && 735 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 736 return i; 737 738 return -ENOSPC; 739 } 740 741 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 742 u8 sta_id, u8 tid, unsigned int timeout) 743 { 744 int queue, size = max_t(u32, IWL_DEFAULT_QUEUE_SIZE, 745 mvm->trans->cfg->min_256_ba_txq_size); 746 747 if (tid == IWL_MAX_TID_COUNT) { 748 tid = IWL_MGMT_TID; 749 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 750 mvm->trans->cfg->min_txq_size); 751 } 752 753 do { 754 __le16 enable = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE); 755 756 queue = iwl_trans_txq_alloc(mvm->trans, enable, 757 sta_id, tid, SCD_QUEUE_CFG, 758 size, timeout); 759 760 if (queue < 0) 761 IWL_DEBUG_TX_QUEUES(mvm, 762 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 763 size, sta_id, tid, queue); 764 size /= 2; 765 } while (queue < 0 && size >= 16); 766 767 if (queue < 0) 768 return queue; 769 770 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 771 queue, sta_id, tid); 772 773 return queue; 774 } 775 776 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 777 struct ieee80211_sta *sta, u8 ac, 778 int tid) 779 { 780 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 781 struct iwl_mvm_txq *mvmtxq = 782 iwl_mvm_txq_from_tid(sta, tid); 783 unsigned int wdg_timeout = 784 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 785 int queue = -1; 786 787 lockdep_assert_held(&mvm->mutex); 788 789 IWL_DEBUG_TX_QUEUES(mvm, 790 "Allocating queue for sta %d on tid %d\n", 791 mvmsta->sta_id, tid); 792 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 793 if (queue < 0) 794 return queue; 795 796 mvmtxq->txq_id = queue; 797 mvm->tvqm_info[queue].txq_tid = tid; 798 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 799 800 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 801 802 spin_lock_bh(&mvmsta->lock); 803 mvmsta->tid_data[tid].txq_id = queue; 804 spin_unlock_bh(&mvmsta->lock); 805 806 return 0; 807 } 808 809 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 810 struct ieee80211_sta *sta, 811 int queue, u8 sta_id, u8 tid) 812 { 813 bool enable_queue = true; 814 815 /* Make sure this TID isn't already enabled */ 816 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 817 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 818 queue, tid); 819 return false; 820 } 821 822 /* Update mappings and refcounts */ 823 if (mvm->queue_info[queue].tid_bitmap) 824 enable_queue = false; 825 826 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 827 mvm->queue_info[queue].ra_sta_id = sta_id; 828 829 if (enable_queue) { 830 if (tid != IWL_MAX_TID_COUNT) 831 mvm->queue_info[queue].mac80211_ac = 832 tid_to_mac80211_ac[tid]; 833 else 834 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 835 836 mvm->queue_info[queue].txq_tid = tid; 837 } 838 839 if (sta) { 840 struct iwl_mvm_txq *mvmtxq = 841 iwl_mvm_txq_from_tid(sta, tid); 842 843 mvmtxq->txq_id = queue; 844 } 845 846 IWL_DEBUG_TX_QUEUES(mvm, 847 "Enabling TXQ #%d tids=0x%x\n", 848 queue, mvm->queue_info[queue].tid_bitmap); 849 850 return enable_queue; 851 } 852 853 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 854 int queue, u16 ssn, 855 const struct iwl_trans_txq_scd_cfg *cfg, 856 unsigned int wdg_timeout) 857 { 858 struct iwl_scd_txq_cfg_cmd cmd = { 859 .scd_queue = queue, 860 .action = SCD_CFG_ENABLE_QUEUE, 861 .window = cfg->frame_limit, 862 .sta_id = cfg->sta_id, 863 .ssn = cpu_to_le16(ssn), 864 .tx_fifo = cfg->fifo, 865 .aggregate = cfg->aggregate, 866 .tid = cfg->tid, 867 }; 868 bool inc_ssn; 869 870 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 871 return false; 872 873 /* Send the enabling command if we need to */ 874 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 875 return false; 876 877 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 878 NULL, wdg_timeout); 879 if (inc_ssn) 880 le16_add_cpu(&cmd.ssn, 1); 881 882 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 883 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 884 885 return inc_ssn; 886 } 887 888 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 889 { 890 struct iwl_scd_txq_cfg_cmd cmd = { 891 .scd_queue = queue, 892 .action = SCD_CFG_UPDATE_QUEUE_TID, 893 }; 894 int tid; 895 unsigned long tid_bitmap; 896 int ret; 897 898 lockdep_assert_held(&mvm->mutex); 899 900 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 901 return; 902 903 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 904 905 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 906 return; 907 908 /* Find any TID for queue */ 909 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 910 cmd.tid = tid; 911 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 912 913 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 914 if (ret) { 915 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 916 queue, ret); 917 return; 918 } 919 920 mvm->queue_info[queue].txq_tid = tid; 921 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 922 queue, tid); 923 } 924 925 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 926 { 927 struct ieee80211_sta *sta; 928 struct iwl_mvm_sta *mvmsta; 929 u8 sta_id; 930 int tid = -1; 931 unsigned long tid_bitmap; 932 unsigned int wdg_timeout; 933 int ssn; 934 int ret = true; 935 936 /* queue sharing is disabled on new TX path */ 937 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 938 return; 939 940 lockdep_assert_held(&mvm->mutex); 941 942 sta_id = mvm->queue_info[queue].ra_sta_id; 943 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 944 945 /* Find TID for queue, and make sure it is the only one on the queue */ 946 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 947 if (tid_bitmap != BIT(tid)) { 948 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 949 queue, tid_bitmap); 950 return; 951 } 952 953 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 954 tid); 955 956 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 957 lockdep_is_held(&mvm->mutex)); 958 959 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 960 return; 961 962 mvmsta = iwl_mvm_sta_from_mac80211(sta); 963 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 964 965 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 966 967 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 968 tid_to_mac80211_ac[tid], ssn, 969 wdg_timeout, true, 970 iwl_mvm_txq_from_tid(sta, tid)); 971 if (ret) { 972 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 973 return; 974 } 975 976 /* If aggs should be turned back on - do it */ 977 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 978 struct iwl_mvm_add_sta_cmd cmd = {0}; 979 980 mvmsta->tid_disable_agg &= ~BIT(tid); 981 982 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 983 cmd.sta_id = mvmsta->sta_id; 984 cmd.add_modify = STA_MODE_MODIFY; 985 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 986 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 987 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 988 989 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 990 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 991 if (!ret) { 992 IWL_DEBUG_TX_QUEUES(mvm, 993 "TXQ #%d is now aggregated again\n", 994 queue); 995 996 /* Mark queue intenally as aggregating again */ 997 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 998 } 999 } 1000 1001 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1002 } 1003 1004 /* 1005 * Remove inactive TIDs of a given queue. 1006 * If all queue TIDs are inactive - mark the queue as inactive 1007 * If only some the queue TIDs are inactive - unmap them from the queue 1008 * 1009 * Returns %true if all TIDs were removed and the queue could be reused. 1010 */ 1011 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1012 struct iwl_mvm_sta *mvmsta, int queue, 1013 unsigned long tid_bitmap, 1014 unsigned long *unshare_queues, 1015 unsigned long *changetid_queues) 1016 { 1017 int tid; 1018 1019 lockdep_assert_held(&mvmsta->lock); 1020 lockdep_assert_held(&mvm->mutex); 1021 1022 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1023 return false; 1024 1025 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1026 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1027 /* If some TFDs are still queued - don't mark TID as inactive */ 1028 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1029 tid_bitmap &= ~BIT(tid); 1030 1031 /* Don't mark as inactive any TID that has an active BA */ 1032 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1033 tid_bitmap &= ~BIT(tid); 1034 } 1035 1036 /* If all TIDs in the queue are inactive - return it can be reused */ 1037 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1038 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1039 return true; 1040 } 1041 1042 /* 1043 * If we are here, this is a shared queue and not all TIDs timed-out. 1044 * Remove the ones that did. 1045 */ 1046 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1047 u16 tid_bitmap; 1048 1049 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1050 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1051 1052 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1053 1054 /* 1055 * We need to take into account a situation in which a TXQ was 1056 * allocated to TID x, and then turned shared by adding TIDs y 1057 * and z. If TID x becomes inactive and is removed from the TXQ, 1058 * ownership must be given to one of the remaining TIDs. 1059 * This is mainly because if TID x continues - a new queue can't 1060 * be allocated for it as long as it is an owner of another TXQ. 1061 * 1062 * Mark this queue in the right bitmap, we'll send the command 1063 * to the firmware later. 1064 */ 1065 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1066 set_bit(queue, changetid_queues); 1067 1068 IWL_DEBUG_TX_QUEUES(mvm, 1069 "Removing inactive TID %d from shared Q:%d\n", 1070 tid, queue); 1071 } 1072 1073 IWL_DEBUG_TX_QUEUES(mvm, 1074 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1075 mvm->queue_info[queue].tid_bitmap); 1076 1077 /* 1078 * There may be different TIDs with the same mac queues, so make 1079 * sure all TIDs have existing corresponding mac queues enabled 1080 */ 1081 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1082 1083 /* If the queue is marked as shared - "unshare" it */ 1084 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1085 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1086 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1087 queue); 1088 set_bit(queue, unshare_queues); 1089 } 1090 1091 return false; 1092 } 1093 1094 /* 1095 * Check for inactivity - this includes checking if any queue 1096 * can be unshared and finding one (and only one) that can be 1097 * reused. 1098 * This function is also invoked as a sort of clean-up task, 1099 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1100 * 1101 * Returns the queue number, or -ENOSPC. 1102 */ 1103 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1104 { 1105 unsigned long now = jiffies; 1106 unsigned long unshare_queues = 0; 1107 unsigned long changetid_queues = 0; 1108 int i, ret, free_queue = -ENOSPC; 1109 struct ieee80211_sta *queue_owner = NULL; 1110 1111 lockdep_assert_held(&mvm->mutex); 1112 1113 if (iwl_mvm_has_new_tx_api(mvm)) 1114 return -ENOSPC; 1115 1116 rcu_read_lock(); 1117 1118 /* we skip the CMD queue below by starting at 1 */ 1119 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1120 1121 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1122 struct ieee80211_sta *sta; 1123 struct iwl_mvm_sta *mvmsta; 1124 u8 sta_id; 1125 int tid; 1126 unsigned long inactive_tid_bitmap = 0; 1127 unsigned long queue_tid_bitmap; 1128 1129 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1130 if (!queue_tid_bitmap) 1131 continue; 1132 1133 /* If TXQ isn't in active use anyway - nothing to do here... */ 1134 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1135 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1136 continue; 1137 1138 /* Check to see if there are inactive TIDs on this queue */ 1139 for_each_set_bit(tid, &queue_tid_bitmap, 1140 IWL_MAX_TID_COUNT + 1) { 1141 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1142 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1143 continue; 1144 1145 inactive_tid_bitmap |= BIT(tid); 1146 } 1147 1148 /* If all TIDs are active - finish check on this queue */ 1149 if (!inactive_tid_bitmap) 1150 continue; 1151 1152 /* 1153 * If we are here - the queue hadn't been served recently and is 1154 * in use 1155 */ 1156 1157 sta_id = mvm->queue_info[i].ra_sta_id; 1158 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1159 1160 /* 1161 * If the STA doesn't exist anymore, it isn't an error. It could 1162 * be that it was removed since getting the queues, and in this 1163 * case it should've inactivated its queues anyway. 1164 */ 1165 if (IS_ERR_OR_NULL(sta)) 1166 continue; 1167 1168 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1169 1170 spin_lock_bh(&mvmsta->lock); 1171 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1172 inactive_tid_bitmap, 1173 &unshare_queues, 1174 &changetid_queues); 1175 if (ret && free_queue < 0) { 1176 queue_owner = sta; 1177 free_queue = i; 1178 } 1179 /* only unlock sta lock - we still need the queue info lock */ 1180 spin_unlock_bh(&mvmsta->lock); 1181 } 1182 1183 1184 /* Reconfigure queues requiring reconfiguation */ 1185 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1186 iwl_mvm_unshare_queue(mvm, i); 1187 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1188 iwl_mvm_change_queue_tid(mvm, i); 1189 1190 rcu_read_unlock(); 1191 1192 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1193 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1194 alloc_for_sta); 1195 if (ret) 1196 return ret; 1197 } 1198 1199 return free_queue; 1200 } 1201 1202 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1203 struct ieee80211_sta *sta, u8 ac, int tid) 1204 { 1205 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1206 struct iwl_trans_txq_scd_cfg cfg = { 1207 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1208 .sta_id = mvmsta->sta_id, 1209 .tid = tid, 1210 .frame_limit = IWL_FRAME_LIMIT, 1211 }; 1212 unsigned int wdg_timeout = 1213 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1214 int queue = -1; 1215 unsigned long disable_agg_tids = 0; 1216 enum iwl_mvm_agg_state queue_state; 1217 bool shared_queue = false, inc_ssn; 1218 int ssn; 1219 unsigned long tfd_queue_mask; 1220 int ret; 1221 1222 lockdep_assert_held(&mvm->mutex); 1223 1224 if (iwl_mvm_has_new_tx_api(mvm)) 1225 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1226 1227 spin_lock_bh(&mvmsta->lock); 1228 tfd_queue_mask = mvmsta->tfd_queue_msk; 1229 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1230 spin_unlock_bh(&mvmsta->lock); 1231 1232 if (tid == IWL_MAX_TID_COUNT) { 1233 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1234 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1235 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1236 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1237 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1238 queue); 1239 1240 /* If no such queue is found, we'll use a DATA queue instead */ 1241 } 1242 1243 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1244 (mvm->queue_info[mvmsta->reserved_queue].status == 1245 IWL_MVM_QUEUE_RESERVED)) { 1246 queue = mvmsta->reserved_queue; 1247 mvm->queue_info[queue].reserved = true; 1248 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1249 } 1250 1251 if (queue < 0) 1252 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1253 IWL_MVM_DQA_MIN_DATA_QUEUE, 1254 IWL_MVM_DQA_MAX_DATA_QUEUE); 1255 if (queue < 0) { 1256 /* try harder - perhaps kill an inactive queue */ 1257 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1258 } 1259 1260 /* No free queue - we'll have to share */ 1261 if (queue <= 0) { 1262 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1263 if (queue > 0) { 1264 shared_queue = true; 1265 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1266 } 1267 } 1268 1269 /* 1270 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1271 * to make sure no one else takes it. 1272 * This will allow avoiding re-acquiring the lock at the end of the 1273 * configuration. On error we'll mark it back as free. 1274 */ 1275 if (queue > 0 && !shared_queue) 1276 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1277 1278 /* This shouldn't happen - out of queues */ 1279 if (WARN_ON(queue <= 0)) { 1280 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1281 tid, cfg.sta_id); 1282 return queue; 1283 } 1284 1285 /* 1286 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1287 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1288 * as aggregatable. 1289 * Mark all DATA queues as allowing to be aggregated at some point 1290 */ 1291 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1292 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1293 1294 IWL_DEBUG_TX_QUEUES(mvm, 1295 "Allocating %squeue #%d to sta %d on tid %d\n", 1296 shared_queue ? "shared " : "", queue, 1297 mvmsta->sta_id, tid); 1298 1299 if (shared_queue) { 1300 /* Disable any open aggs on this queue */ 1301 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1302 1303 if (disable_agg_tids) { 1304 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1305 queue); 1306 iwl_mvm_invalidate_sta_queue(mvm, queue, 1307 disable_agg_tids, false); 1308 } 1309 } 1310 1311 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1312 1313 /* 1314 * Mark queue as shared in transport if shared 1315 * Note this has to be done after queue enablement because enablement 1316 * can also set this value, and there is no indication there to shared 1317 * queues 1318 */ 1319 if (shared_queue) 1320 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1321 1322 spin_lock_bh(&mvmsta->lock); 1323 /* 1324 * This looks racy, but it is not. We have only one packet for 1325 * this ra/tid in our Tx path since we stop the Qdisc when we 1326 * need to allocate a new TFD queue. 1327 */ 1328 if (inc_ssn) { 1329 mvmsta->tid_data[tid].seq_number += 0x10; 1330 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1331 } 1332 mvmsta->tid_data[tid].txq_id = queue; 1333 mvmsta->tfd_queue_msk |= BIT(queue); 1334 queue_state = mvmsta->tid_data[tid].state; 1335 1336 if (mvmsta->reserved_queue == queue) 1337 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1338 spin_unlock_bh(&mvmsta->lock); 1339 1340 if (!shared_queue) { 1341 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1342 if (ret) 1343 goto out_err; 1344 1345 /* If we need to re-enable aggregations... */ 1346 if (queue_state == IWL_AGG_ON) { 1347 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1348 if (ret) 1349 goto out_err; 1350 } 1351 } else { 1352 /* Redirect queue, if needed */ 1353 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1354 wdg_timeout, false, 1355 iwl_mvm_txq_from_tid(sta, tid)); 1356 if (ret) 1357 goto out_err; 1358 } 1359 1360 return 0; 1361 1362 out_err: 1363 iwl_mvm_disable_txq(mvm, sta, queue, tid, 0); 1364 1365 return ret; 1366 } 1367 1368 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1369 { 1370 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1371 add_stream_wk); 1372 1373 mutex_lock(&mvm->mutex); 1374 1375 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1376 1377 while (!list_empty(&mvm->add_stream_txqs)) { 1378 struct iwl_mvm_txq *mvmtxq; 1379 struct ieee80211_txq *txq; 1380 u8 tid; 1381 1382 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1383 struct iwl_mvm_txq, list); 1384 1385 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1386 drv_priv); 1387 tid = txq->tid; 1388 if (tid == IEEE80211_NUM_TIDS) 1389 tid = IWL_MAX_TID_COUNT; 1390 1391 /* 1392 * We can't really do much here, but if this fails we can't 1393 * transmit anyway - so just don't transmit the frame etc. 1394 * and let them back up ... we've tried our best to allocate 1395 * a queue in the function itself. 1396 */ 1397 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1398 list_del_init(&mvmtxq->list); 1399 continue; 1400 } 1401 1402 list_del_init(&mvmtxq->list); 1403 local_bh_disable(); 1404 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1405 local_bh_enable(); 1406 } 1407 1408 mutex_unlock(&mvm->mutex); 1409 } 1410 1411 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1412 struct ieee80211_sta *sta, 1413 enum nl80211_iftype vif_type) 1414 { 1415 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1416 int queue; 1417 1418 /* queue reserving is disabled on new TX path */ 1419 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1420 return 0; 1421 1422 /* run the general cleanup/unsharing of queues */ 1423 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1424 1425 /* Make sure we have free resources for this STA */ 1426 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1427 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1428 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1429 IWL_MVM_QUEUE_FREE)) 1430 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1431 else 1432 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1433 IWL_MVM_DQA_MIN_DATA_QUEUE, 1434 IWL_MVM_DQA_MAX_DATA_QUEUE); 1435 if (queue < 0) { 1436 /* try again - this time kick out a queue if needed */ 1437 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1438 if (queue < 0) { 1439 IWL_ERR(mvm, "No available queues for new station\n"); 1440 return -ENOSPC; 1441 } 1442 } 1443 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1444 1445 mvmsta->reserved_queue = queue; 1446 1447 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1448 queue, mvmsta->sta_id); 1449 1450 return 0; 1451 } 1452 1453 /* 1454 * In DQA mode, after a HW restart the queues should be allocated as before, in 1455 * order to avoid race conditions when there are shared queues. This function 1456 * does the re-mapping and queue allocation. 1457 * 1458 * Note that re-enabling aggregations isn't done in this function. 1459 */ 1460 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1461 struct ieee80211_sta *sta) 1462 { 1463 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1464 unsigned int wdg = 1465 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1466 int i; 1467 struct iwl_trans_txq_scd_cfg cfg = { 1468 .sta_id = mvm_sta->sta_id, 1469 .frame_limit = IWL_FRAME_LIMIT, 1470 }; 1471 1472 /* Make sure reserved queue is still marked as such (if allocated) */ 1473 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1474 mvm->queue_info[mvm_sta->reserved_queue].status = 1475 IWL_MVM_QUEUE_RESERVED; 1476 1477 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1478 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1479 int txq_id = tid_data->txq_id; 1480 int ac; 1481 1482 if (txq_id == IWL_MVM_INVALID_QUEUE) 1483 continue; 1484 1485 ac = tid_to_mac80211_ac[i]; 1486 1487 if (iwl_mvm_has_new_tx_api(mvm)) { 1488 IWL_DEBUG_TX_QUEUES(mvm, 1489 "Re-mapping sta %d tid %d\n", 1490 mvm_sta->sta_id, i); 1491 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1492 i, wdg); 1493 /* 1494 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1495 * to try again later, we have no other good way of 1496 * failing here 1497 */ 1498 if (txq_id < 0) 1499 txq_id = IWL_MVM_INVALID_QUEUE; 1500 tid_data->txq_id = txq_id; 1501 1502 /* 1503 * Since we don't set the seq number after reset, and HW 1504 * sets it now, FW reset will cause the seq num to start 1505 * at 0 again, so driver will need to update it 1506 * internally as well, so it keeps in sync with real val 1507 */ 1508 tid_data->seq_number = 0; 1509 } else { 1510 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1511 1512 cfg.tid = i; 1513 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1514 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1515 txq_id == 1516 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1517 1518 IWL_DEBUG_TX_QUEUES(mvm, 1519 "Re-mapping sta %d tid %d to queue %d\n", 1520 mvm_sta->sta_id, i, txq_id); 1521 1522 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1523 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1524 } 1525 } 1526 } 1527 1528 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1529 struct iwl_mvm_int_sta *sta, 1530 const u8 *addr, 1531 u16 mac_id, u16 color) 1532 { 1533 struct iwl_mvm_add_sta_cmd cmd; 1534 int ret; 1535 u32 status = ADD_STA_SUCCESS; 1536 1537 lockdep_assert_held(&mvm->mutex); 1538 1539 memset(&cmd, 0, sizeof(cmd)); 1540 cmd.sta_id = sta->sta_id; 1541 1542 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, ADD_STA, 1543 0) >= 12 && 1544 sta->type == IWL_STA_AUX_ACTIVITY) 1545 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1546 else 1547 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1548 color)); 1549 1550 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1551 cmd.station_type = sta->type; 1552 1553 if (!iwl_mvm_has_new_tx_api(mvm)) 1554 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1555 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1556 1557 if (addr) 1558 memcpy(cmd.addr, addr, ETH_ALEN); 1559 1560 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1561 iwl_mvm_add_sta_cmd_size(mvm), 1562 &cmd, &status); 1563 if (ret) 1564 return ret; 1565 1566 switch (status & IWL_ADD_STA_STATUS_MASK) { 1567 case ADD_STA_SUCCESS: 1568 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1569 return 0; 1570 default: 1571 ret = -EIO; 1572 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1573 status); 1574 break; 1575 } 1576 return ret; 1577 } 1578 1579 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1580 struct ieee80211_vif *vif, 1581 struct ieee80211_sta *sta) 1582 { 1583 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1584 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1585 struct iwl_mvm_rxq_dup_data *dup_data; 1586 int i, ret, sta_id; 1587 bool sta_update = false; 1588 unsigned int sta_flags = 0; 1589 1590 lockdep_assert_held(&mvm->mutex); 1591 1592 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1593 sta_id = iwl_mvm_find_free_sta_id(mvm, 1594 ieee80211_vif_type_p2p(vif)); 1595 else 1596 sta_id = mvm_sta->sta_id; 1597 1598 if (sta_id == IWL_MVM_INVALID_STA) 1599 return -ENOSPC; 1600 1601 spin_lock_init(&mvm_sta->lock); 1602 1603 /* if this is a HW restart re-alloc existing queues */ 1604 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1605 struct iwl_mvm_int_sta tmp_sta = { 1606 .sta_id = sta_id, 1607 .type = mvm_sta->sta_type, 1608 }; 1609 1610 /* 1611 * First add an empty station since allocating 1612 * a queue requires a valid station 1613 */ 1614 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1615 mvmvif->id, mvmvif->color); 1616 if (ret) 1617 goto err; 1618 1619 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1620 sta_update = true; 1621 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1622 goto update_fw; 1623 } 1624 1625 mvm_sta->sta_id = sta_id; 1626 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1627 mvmvif->color); 1628 mvm_sta->vif = vif; 1629 if (!mvm->trans->trans_cfg->gen2) 1630 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1631 else 1632 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1633 mvm_sta->tx_protection = 0; 1634 mvm_sta->tt_tx_protection = false; 1635 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1636 1637 /* HW restart, don't assume the memory has been zeroed */ 1638 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1639 mvm_sta->tfd_queue_msk = 0; 1640 1641 /* for HW restart - reset everything but the sequence number */ 1642 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1643 u16 seq = mvm_sta->tid_data[i].seq_number; 1644 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1645 mvm_sta->tid_data[i].seq_number = seq; 1646 1647 /* 1648 * Mark all queues for this STA as unallocated and defer TX 1649 * frames until the queue is allocated 1650 */ 1651 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1652 } 1653 1654 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1655 struct iwl_mvm_txq *mvmtxq = 1656 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1657 1658 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1659 INIT_LIST_HEAD(&mvmtxq->list); 1660 atomic_set(&mvmtxq->tx_request, 0); 1661 } 1662 1663 mvm_sta->agg_tids = 0; 1664 1665 if (iwl_mvm_has_new_rx_api(mvm) && 1666 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1667 int q; 1668 1669 dup_data = kcalloc(mvm->trans->num_rx_queues, 1670 sizeof(*dup_data), GFP_KERNEL); 1671 if (!dup_data) 1672 return -ENOMEM; 1673 /* 1674 * Initialize all the last_seq values to 0xffff which can never 1675 * compare equal to the frame's seq_ctrl in the check in 1676 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1677 * number and fragmented packets don't reach that function. 1678 * 1679 * This thus allows receiving a packet with seqno 0 and the 1680 * retry bit set as the very first packet on a new TID. 1681 */ 1682 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1683 memset(dup_data[q].last_seq, 0xff, 1684 sizeof(dup_data[q].last_seq)); 1685 mvm_sta->dup_data = dup_data; 1686 } 1687 1688 if (!iwl_mvm_has_new_tx_api(mvm)) { 1689 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1690 ieee80211_vif_type_p2p(vif)); 1691 if (ret) 1692 goto err; 1693 } 1694 1695 /* 1696 * if rs is registered with mac80211, then "add station" will be handled 1697 * via the corresponding ops, otherwise need to notify rate scaling here 1698 */ 1699 if (iwl_mvm_has_tlc_offload(mvm)) 1700 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1701 else 1702 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1703 1704 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1705 1706 update_fw: 1707 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1708 if (ret) 1709 goto err; 1710 1711 if (vif->type == NL80211_IFTYPE_STATION) { 1712 if (!sta->tdls) { 1713 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1714 mvmvif->ap_sta_id = sta_id; 1715 } else { 1716 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1717 } 1718 } 1719 1720 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1721 1722 return 0; 1723 1724 err: 1725 return ret; 1726 } 1727 1728 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1729 bool drain) 1730 { 1731 struct iwl_mvm_add_sta_cmd cmd = {}; 1732 int ret; 1733 u32 status; 1734 1735 lockdep_assert_held(&mvm->mutex); 1736 1737 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1738 cmd.sta_id = mvmsta->sta_id; 1739 cmd.add_modify = STA_MODE_MODIFY; 1740 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1741 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1742 1743 status = ADD_STA_SUCCESS; 1744 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1745 iwl_mvm_add_sta_cmd_size(mvm), 1746 &cmd, &status); 1747 if (ret) 1748 return ret; 1749 1750 switch (status & IWL_ADD_STA_STATUS_MASK) { 1751 case ADD_STA_SUCCESS: 1752 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1753 mvmsta->sta_id); 1754 break; 1755 default: 1756 ret = -EIO; 1757 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1758 mvmsta->sta_id); 1759 break; 1760 } 1761 1762 return ret; 1763 } 1764 1765 /* 1766 * Remove a station from the FW table. Before sending the command to remove 1767 * the station validate that the station is indeed known to the driver (sanity 1768 * only). 1769 */ 1770 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1771 { 1772 struct ieee80211_sta *sta; 1773 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1774 .sta_id = sta_id, 1775 }; 1776 int ret; 1777 1778 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1779 lockdep_is_held(&mvm->mutex)); 1780 1781 /* Note: internal stations are marked as error values */ 1782 if (!sta) { 1783 IWL_ERR(mvm, "Invalid station id\n"); 1784 return -EINVAL; 1785 } 1786 1787 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1788 sizeof(rm_sta_cmd), &rm_sta_cmd); 1789 if (ret) { 1790 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1791 return ret; 1792 } 1793 1794 return 0; 1795 } 1796 1797 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1798 struct ieee80211_vif *vif, 1799 struct ieee80211_sta *sta) 1800 { 1801 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1802 int i; 1803 1804 lockdep_assert_held(&mvm->mutex); 1805 1806 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1807 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1808 continue; 1809 1810 iwl_mvm_disable_txq(mvm, sta, mvm_sta->tid_data[i].txq_id, i, 1811 0); 1812 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1813 } 1814 1815 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1816 struct iwl_mvm_txq *mvmtxq = 1817 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1818 1819 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1820 } 1821 } 1822 1823 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1824 struct iwl_mvm_sta *mvm_sta) 1825 { 1826 int i; 1827 1828 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1829 u16 txq_id; 1830 int ret; 1831 1832 spin_lock_bh(&mvm_sta->lock); 1833 txq_id = mvm_sta->tid_data[i].txq_id; 1834 spin_unlock_bh(&mvm_sta->lock); 1835 1836 if (txq_id == IWL_MVM_INVALID_QUEUE) 1837 continue; 1838 1839 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1840 if (ret) 1841 return ret; 1842 } 1843 1844 return 0; 1845 } 1846 1847 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1848 struct ieee80211_vif *vif, 1849 struct ieee80211_sta *sta) 1850 { 1851 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1852 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1853 u8 sta_id = mvm_sta->sta_id; 1854 int ret; 1855 1856 lockdep_assert_held(&mvm->mutex); 1857 1858 if (iwl_mvm_has_new_rx_api(mvm)) 1859 kfree(mvm_sta->dup_data); 1860 1861 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1862 if (ret) 1863 return ret; 1864 1865 /* flush its queues here since we are freeing mvm_sta */ 1866 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1867 if (ret) 1868 return ret; 1869 if (iwl_mvm_has_new_tx_api(mvm)) { 1870 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1871 } else { 1872 u32 q_mask = mvm_sta->tfd_queue_msk; 1873 1874 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1875 q_mask); 1876 } 1877 if (ret) 1878 return ret; 1879 1880 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1881 1882 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1883 1884 /* If there is a TXQ still marked as reserved - free it */ 1885 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1886 u8 reserved_txq = mvm_sta->reserved_queue; 1887 enum iwl_mvm_queue_status *status; 1888 1889 /* 1890 * If no traffic has gone through the reserved TXQ - it 1891 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1892 * should be manually marked as free again 1893 */ 1894 status = &mvm->queue_info[reserved_txq].status; 1895 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1896 (*status != IWL_MVM_QUEUE_FREE), 1897 "sta_id %d reserved txq %d status %d", 1898 sta_id, reserved_txq, *status)) 1899 return -EINVAL; 1900 1901 *status = IWL_MVM_QUEUE_FREE; 1902 } 1903 1904 if (vif->type == NL80211_IFTYPE_STATION && 1905 mvmvif->ap_sta_id == sta_id) { 1906 /* if associated - we can't remove the AP STA now */ 1907 if (vif->bss_conf.assoc) 1908 return ret; 1909 1910 /* unassoc - go ahead - remove the AP STA now */ 1911 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1912 } 1913 1914 /* 1915 * This shouldn't happen - the TDLS channel switch should be canceled 1916 * before the STA is removed. 1917 */ 1918 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1919 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1920 cancel_delayed_work(&mvm->tdls_cs.dwork); 1921 } 1922 1923 /* 1924 * Make sure that the tx response code sees the station as -EBUSY and 1925 * calls the drain worker. 1926 */ 1927 spin_lock_bh(&mvm_sta->lock); 1928 spin_unlock_bh(&mvm_sta->lock); 1929 1930 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1931 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1932 1933 return ret; 1934 } 1935 1936 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1937 struct ieee80211_vif *vif, 1938 u8 sta_id) 1939 { 1940 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1941 1942 lockdep_assert_held(&mvm->mutex); 1943 1944 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1945 return ret; 1946 } 1947 1948 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1949 struct iwl_mvm_int_sta *sta, 1950 u32 qmask, enum nl80211_iftype iftype, 1951 enum iwl_sta_type type) 1952 { 1953 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1954 sta->sta_id == IWL_MVM_INVALID_STA) { 1955 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 1956 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 1957 return -ENOSPC; 1958 } 1959 1960 sta->tfd_queue_msk = qmask; 1961 sta->type = type; 1962 1963 /* put a non-NULL value so iterating over the stations won't stop */ 1964 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 1965 return 0; 1966 } 1967 1968 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 1969 { 1970 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 1971 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 1972 sta->sta_id = IWL_MVM_INVALID_STA; 1973 } 1974 1975 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 1976 u8 sta_id, u8 fifo) 1977 { 1978 unsigned int wdg_timeout = 1979 mvm->trans->trans_cfg->base_params->wd_timeout; 1980 struct iwl_trans_txq_scd_cfg cfg = { 1981 .fifo = fifo, 1982 .sta_id = sta_id, 1983 .tid = IWL_MAX_TID_COUNT, 1984 .aggregate = false, 1985 .frame_limit = IWL_FRAME_LIMIT, 1986 }; 1987 1988 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 1989 1990 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 1991 } 1992 1993 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 1994 { 1995 unsigned int wdg_timeout = 1996 mvm->trans->trans_cfg->base_params->wd_timeout; 1997 1998 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 1999 2000 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 2001 wdg_timeout); 2002 } 2003 2004 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2005 int maccolor, u8 *addr, 2006 struct iwl_mvm_int_sta *sta, 2007 u16 *queue, int fifo) 2008 { 2009 int ret; 2010 2011 /* Map queue to fifo - needs to happen before adding station */ 2012 if (!iwl_mvm_has_new_tx_api(mvm)) 2013 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2014 2015 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2016 if (ret) { 2017 if (!iwl_mvm_has_new_tx_api(mvm)) 2018 iwl_mvm_disable_txq(mvm, NULL, *queue, 2019 IWL_MAX_TID_COUNT, 0); 2020 return ret; 2021 } 2022 2023 /* 2024 * For 22000 firmware and on we cannot add queue to a station unknown 2025 * to firmware so enable queue here - after the station was added 2026 */ 2027 if (iwl_mvm_has_new_tx_api(mvm)) { 2028 int txq; 2029 2030 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2031 if (txq < 0) { 2032 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2033 return txq; 2034 } 2035 2036 *queue = txq; 2037 } 2038 2039 return 0; 2040 } 2041 2042 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2043 { 2044 int ret; 2045 2046 lockdep_assert_held(&mvm->mutex); 2047 2048 /* Allocate aux station and assign to it the aux queue */ 2049 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2050 NL80211_IFTYPE_UNSPECIFIED, 2051 IWL_STA_AUX_ACTIVITY); 2052 if (ret) 2053 return ret; 2054 2055 /* 2056 * In CDB NICs we need to specify which lmac to use for aux activity 2057 * using the mac_id argument place to send lmac_id to the function 2058 */ 2059 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2060 &mvm->aux_sta, &mvm->aux_queue, 2061 IWL_MVM_TX_FIFO_MCAST); 2062 if (ret) { 2063 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2064 return ret; 2065 } 2066 2067 return 0; 2068 } 2069 2070 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2071 { 2072 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2073 2074 lockdep_assert_held(&mvm->mutex); 2075 2076 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2077 NULL, &mvm->snif_sta, 2078 &mvm->snif_queue, 2079 IWL_MVM_TX_FIFO_BE); 2080 } 2081 2082 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2083 { 2084 int ret; 2085 2086 lockdep_assert_held(&mvm->mutex); 2087 2088 iwl_mvm_disable_txq(mvm, NULL, mvm->snif_queue, IWL_MAX_TID_COUNT, 0); 2089 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2090 if (ret) 2091 IWL_WARN(mvm, "Failed sending remove station\n"); 2092 2093 return ret; 2094 } 2095 2096 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2097 { 2098 int ret; 2099 2100 lockdep_assert_held(&mvm->mutex); 2101 2102 iwl_mvm_disable_txq(mvm, NULL, mvm->aux_queue, IWL_MAX_TID_COUNT, 0); 2103 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2104 if (ret) 2105 IWL_WARN(mvm, "Failed sending remove station\n"); 2106 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2107 2108 return ret; 2109 } 2110 2111 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2112 { 2113 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2114 } 2115 2116 /* 2117 * Send the add station command for the vif's broadcast station. 2118 * Assumes that the station was already allocated. 2119 * 2120 * @mvm: the mvm component 2121 * @vif: the interface to which the broadcast station is added 2122 * @bsta: the broadcast station to add. 2123 */ 2124 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2125 { 2126 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2127 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2128 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2129 const u8 *baddr = _baddr; 2130 int queue; 2131 int ret; 2132 unsigned int wdg_timeout = 2133 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2134 struct iwl_trans_txq_scd_cfg cfg = { 2135 .fifo = IWL_MVM_TX_FIFO_VO, 2136 .sta_id = mvmvif->bcast_sta.sta_id, 2137 .tid = IWL_MAX_TID_COUNT, 2138 .aggregate = false, 2139 .frame_limit = IWL_FRAME_LIMIT, 2140 }; 2141 2142 lockdep_assert_held(&mvm->mutex); 2143 2144 if (!iwl_mvm_has_new_tx_api(mvm)) { 2145 if (vif->type == NL80211_IFTYPE_AP || 2146 vif->type == NL80211_IFTYPE_ADHOC) { 2147 queue = mvm->probe_queue; 2148 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2149 queue = mvm->p2p_dev_queue; 2150 } else { 2151 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2152 return -EINVAL; 2153 } 2154 2155 bsta->tfd_queue_msk |= BIT(queue); 2156 2157 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2158 } 2159 2160 if (vif->type == NL80211_IFTYPE_ADHOC) 2161 baddr = vif->bss_conf.bssid; 2162 2163 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2164 return -ENOSPC; 2165 2166 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2167 mvmvif->id, mvmvif->color); 2168 if (ret) 2169 return ret; 2170 2171 /* 2172 * For 22000 firmware and on we cannot add queue to a station unknown 2173 * to firmware so enable queue here - after the station was added 2174 */ 2175 if (iwl_mvm_has_new_tx_api(mvm)) { 2176 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2177 IWL_MAX_TID_COUNT, 2178 wdg_timeout); 2179 if (queue < 0) { 2180 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2181 return queue; 2182 } 2183 2184 if (vif->type == NL80211_IFTYPE_AP || 2185 vif->type == NL80211_IFTYPE_ADHOC) 2186 mvm->probe_queue = queue; 2187 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2188 mvm->p2p_dev_queue = queue; 2189 } 2190 2191 return 0; 2192 } 2193 2194 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2195 struct ieee80211_vif *vif) 2196 { 2197 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2198 int queue; 2199 2200 lockdep_assert_held(&mvm->mutex); 2201 2202 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2203 2204 switch (vif->type) { 2205 case NL80211_IFTYPE_AP: 2206 case NL80211_IFTYPE_ADHOC: 2207 queue = mvm->probe_queue; 2208 break; 2209 case NL80211_IFTYPE_P2P_DEVICE: 2210 queue = mvm->p2p_dev_queue; 2211 break; 2212 default: 2213 WARN(1, "Can't free bcast queue on vif type %d\n", 2214 vif->type); 2215 return; 2216 } 2217 2218 iwl_mvm_disable_txq(mvm, NULL, queue, IWL_MAX_TID_COUNT, 0); 2219 if (iwl_mvm_has_new_tx_api(mvm)) 2220 return; 2221 2222 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2223 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2224 } 2225 2226 /* Send the FW a request to remove the station from it's internal data 2227 * structures, but DO NOT remove the entry from the local data structures. */ 2228 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2229 { 2230 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2231 int ret; 2232 2233 lockdep_assert_held(&mvm->mutex); 2234 2235 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2236 2237 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2238 if (ret) 2239 IWL_WARN(mvm, "Failed sending remove station\n"); 2240 return ret; 2241 } 2242 2243 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2244 { 2245 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2246 2247 lockdep_assert_held(&mvm->mutex); 2248 2249 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2250 ieee80211_vif_type_p2p(vif), 2251 IWL_STA_GENERAL_PURPOSE); 2252 } 2253 2254 /* Allocate a new station entry for the broadcast station to the given vif, 2255 * and send it to the FW. 2256 * Note that each P2P mac should have its own broadcast station. 2257 * 2258 * @mvm: the mvm component 2259 * @vif: the interface to which the broadcast station is added 2260 * @bsta: the broadcast station to add. */ 2261 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2262 { 2263 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2264 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2265 int ret; 2266 2267 lockdep_assert_held(&mvm->mutex); 2268 2269 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2270 if (ret) 2271 return ret; 2272 2273 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2274 2275 if (ret) 2276 iwl_mvm_dealloc_int_sta(mvm, bsta); 2277 2278 return ret; 2279 } 2280 2281 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2282 { 2283 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2284 2285 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2286 } 2287 2288 /* 2289 * Send the FW a request to remove the station from it's internal data 2290 * structures, and in addition remove it from the local data structure. 2291 */ 2292 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2293 { 2294 int ret; 2295 2296 lockdep_assert_held(&mvm->mutex); 2297 2298 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2299 2300 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2301 2302 return ret; 2303 } 2304 2305 /* 2306 * Allocate a new station entry for the multicast station to the given vif, 2307 * and send it to the FW. 2308 * Note that each AP/GO mac should have its own multicast station. 2309 * 2310 * @mvm: the mvm component 2311 * @vif: the interface to which the multicast station is added 2312 */ 2313 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2314 { 2315 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2316 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2317 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2318 const u8 *maddr = _maddr; 2319 struct iwl_trans_txq_scd_cfg cfg = { 2320 .fifo = vif->type == NL80211_IFTYPE_AP ? 2321 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2322 .sta_id = msta->sta_id, 2323 .tid = 0, 2324 .aggregate = false, 2325 .frame_limit = IWL_FRAME_LIMIT, 2326 }; 2327 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2328 int ret; 2329 2330 lockdep_assert_held(&mvm->mutex); 2331 2332 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2333 vif->type != NL80211_IFTYPE_ADHOC)) 2334 return -ENOTSUPP; 2335 2336 /* 2337 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2338 * invalid, so make sure we use the queue we want. 2339 * Note that this is done here as we want to avoid making DQA 2340 * changes in mac80211 layer. 2341 */ 2342 if (vif->type == NL80211_IFTYPE_ADHOC) 2343 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2344 2345 /* 2346 * While in previous FWs we had to exclude cab queue from TFD queue 2347 * mask, now it is needed as any other queue. 2348 */ 2349 if (!iwl_mvm_has_new_tx_api(mvm) && 2350 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2351 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2352 timeout); 2353 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2354 } 2355 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2356 mvmvif->id, mvmvif->color); 2357 if (ret) 2358 goto err; 2359 2360 /* 2361 * Enable cab queue after the ADD_STA command is sent. 2362 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2363 * command with unknown station id, and for FW that doesn't support 2364 * station API since the cab queue is not included in the 2365 * tfd_queue_mask. 2366 */ 2367 if (iwl_mvm_has_new_tx_api(mvm)) { 2368 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2369 0, 2370 timeout); 2371 if (queue < 0) { 2372 ret = queue; 2373 goto err; 2374 } 2375 mvmvif->cab_queue = queue; 2376 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2377 IWL_UCODE_TLV_API_STA_TYPE)) 2378 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2379 timeout); 2380 2381 return 0; 2382 err: 2383 iwl_mvm_dealloc_int_sta(mvm, msta); 2384 return ret; 2385 } 2386 2387 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2388 struct ieee80211_key_conf *keyconf, 2389 bool mcast) 2390 { 2391 union { 2392 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2393 struct iwl_mvm_add_sta_key_cmd cmd; 2394 } u = {}; 2395 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2396 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2397 __le16 key_flags; 2398 int ret, size; 2399 u32 status; 2400 2401 /* This is a valid situation for GTK removal */ 2402 if (sta_id == IWL_MVM_INVALID_STA) 2403 return 0; 2404 2405 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2406 STA_KEY_FLG_KEYID_MSK); 2407 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2408 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2409 2410 if (mcast) 2411 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2412 2413 /* 2414 * The fields assigned here are in the same location at the start 2415 * of the command, so we can do this union trick. 2416 */ 2417 u.cmd.common.key_flags = key_flags; 2418 u.cmd.common.key_offset = keyconf->hw_key_idx; 2419 u.cmd.common.sta_id = sta_id; 2420 2421 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2422 2423 status = ADD_STA_SUCCESS; 2424 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2425 &status); 2426 2427 switch (status) { 2428 case ADD_STA_SUCCESS: 2429 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2430 break; 2431 default: 2432 ret = -EIO; 2433 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2434 break; 2435 } 2436 2437 return ret; 2438 } 2439 2440 /* 2441 * Send the FW a request to remove the station from it's internal data 2442 * structures, and in addition remove it from the local data structure. 2443 */ 2444 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2445 { 2446 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2447 int ret; 2448 2449 lockdep_assert_held(&mvm->mutex); 2450 2451 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2452 2453 iwl_mvm_disable_txq(mvm, NULL, mvmvif->cab_queue, 0, 0); 2454 2455 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2456 if (ret) 2457 IWL_WARN(mvm, "Failed sending remove station\n"); 2458 2459 return ret; 2460 } 2461 2462 #define IWL_MAX_RX_BA_SESSIONS 16 2463 2464 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2465 { 2466 struct iwl_mvm_rss_sync_notif notif = { 2467 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2468 .metadata.sync = 1, 2469 .delba.baid = baid, 2470 }; 2471 iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 2472 }; 2473 2474 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2475 struct iwl_mvm_baid_data *data) 2476 { 2477 int i; 2478 2479 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2480 2481 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2482 int j; 2483 struct iwl_mvm_reorder_buffer *reorder_buf = 2484 &data->reorder_buf[i]; 2485 struct iwl_mvm_reorder_buf_entry *entries = 2486 &data->entries[i * data->entries_per_queue]; 2487 2488 spin_lock_bh(&reorder_buf->lock); 2489 if (likely(!reorder_buf->num_stored)) { 2490 spin_unlock_bh(&reorder_buf->lock); 2491 continue; 2492 } 2493 2494 /* 2495 * This shouldn't happen in regular DELBA since the internal 2496 * delBA notification should trigger a release of all frames in 2497 * the reorder buffer. 2498 */ 2499 WARN_ON(1); 2500 2501 for (j = 0; j < reorder_buf->buf_size; j++) 2502 __skb_queue_purge(&entries[j].e.frames); 2503 /* 2504 * Prevent timer re-arm. This prevents a very far fetched case 2505 * where we timed out on the notification. There may be prior 2506 * RX frames pending in the RX queue before the notification 2507 * that might get processed between now and the actual deletion 2508 * and we would re-arm the timer although we are deleting the 2509 * reorder buffer. 2510 */ 2511 reorder_buf->removed = true; 2512 spin_unlock_bh(&reorder_buf->lock); 2513 del_timer_sync(&reorder_buf->reorder_timer); 2514 } 2515 } 2516 2517 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2518 struct iwl_mvm_baid_data *data, 2519 u16 ssn, u16 buf_size) 2520 { 2521 int i; 2522 2523 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2524 struct iwl_mvm_reorder_buffer *reorder_buf = 2525 &data->reorder_buf[i]; 2526 struct iwl_mvm_reorder_buf_entry *entries = 2527 &data->entries[i * data->entries_per_queue]; 2528 int j; 2529 2530 reorder_buf->num_stored = 0; 2531 reorder_buf->head_sn = ssn; 2532 reorder_buf->buf_size = buf_size; 2533 /* rx reorder timer */ 2534 timer_setup(&reorder_buf->reorder_timer, 2535 iwl_mvm_reorder_timer_expired, 0); 2536 spin_lock_init(&reorder_buf->lock); 2537 reorder_buf->mvm = mvm; 2538 reorder_buf->queue = i; 2539 reorder_buf->valid = false; 2540 for (j = 0; j < reorder_buf->buf_size; j++) 2541 __skb_queue_head_init(&entries[j].e.frames); 2542 } 2543 } 2544 2545 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2546 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2547 { 2548 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2549 struct iwl_mvm_add_sta_cmd cmd = {}; 2550 struct iwl_mvm_baid_data *baid_data = NULL; 2551 int ret; 2552 u32 status; 2553 2554 lockdep_assert_held(&mvm->mutex); 2555 2556 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2557 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2558 return -ENOSPC; 2559 } 2560 2561 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2562 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2563 2564 /* sparse doesn't like the __align() so don't check */ 2565 #ifndef __CHECKER__ 2566 /* 2567 * The division below will be OK if either the cache line size 2568 * can be divided by the entry size (ALIGN will round up) or if 2569 * if the entry size can be divided by the cache line size, in 2570 * which case the ALIGN() will do nothing. 2571 */ 2572 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2573 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2574 #endif 2575 2576 /* 2577 * Upward align the reorder buffer size to fill an entire cache 2578 * line for each queue, to avoid sharing cache lines between 2579 * different queues. 2580 */ 2581 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2582 2583 /* 2584 * Allocate here so if allocation fails we can bail out early 2585 * before starting the BA session in the firmware 2586 */ 2587 baid_data = kzalloc(sizeof(*baid_data) + 2588 mvm->trans->num_rx_queues * 2589 reorder_buf_size, 2590 GFP_KERNEL); 2591 if (!baid_data) 2592 return -ENOMEM; 2593 2594 /* 2595 * This division is why we need the above BUILD_BUG_ON(), 2596 * if that doesn't hold then this will not be right. 2597 */ 2598 baid_data->entries_per_queue = 2599 reorder_buf_size / sizeof(baid_data->entries[0]); 2600 } 2601 2602 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2603 cmd.sta_id = mvm_sta->sta_id; 2604 cmd.add_modify = STA_MODE_MODIFY; 2605 if (start) { 2606 cmd.add_immediate_ba_tid = (u8) tid; 2607 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2608 cmd.rx_ba_window = cpu_to_le16(buf_size); 2609 } else { 2610 cmd.remove_immediate_ba_tid = (u8) tid; 2611 } 2612 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2613 STA_MODIFY_REMOVE_BA_TID; 2614 2615 status = ADD_STA_SUCCESS; 2616 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2617 iwl_mvm_add_sta_cmd_size(mvm), 2618 &cmd, &status); 2619 if (ret) 2620 goto out_free; 2621 2622 switch (status & IWL_ADD_STA_STATUS_MASK) { 2623 case ADD_STA_SUCCESS: 2624 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2625 start ? "start" : "stopp"); 2626 break; 2627 case ADD_STA_IMMEDIATE_BA_FAILURE: 2628 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2629 ret = -ENOSPC; 2630 break; 2631 default: 2632 ret = -EIO; 2633 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2634 start ? "start" : "stopp", status); 2635 break; 2636 } 2637 2638 if (ret) 2639 goto out_free; 2640 2641 if (start) { 2642 u8 baid; 2643 2644 mvm->rx_ba_sessions++; 2645 2646 if (!iwl_mvm_has_new_rx_api(mvm)) 2647 return 0; 2648 2649 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2650 ret = -EINVAL; 2651 goto out_free; 2652 } 2653 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2654 IWL_ADD_STA_BAID_SHIFT); 2655 baid_data->baid = baid; 2656 baid_data->timeout = timeout; 2657 baid_data->last_rx = jiffies; 2658 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2659 timer_setup(&baid_data->session_timer, 2660 iwl_mvm_rx_agg_session_expired, 0); 2661 baid_data->mvm = mvm; 2662 baid_data->tid = tid; 2663 baid_data->sta_id = mvm_sta->sta_id; 2664 2665 mvm_sta->tid_to_baid[tid] = baid; 2666 if (timeout) 2667 mod_timer(&baid_data->session_timer, 2668 TU_TO_EXP_TIME(timeout * 2)); 2669 2670 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2671 /* 2672 * protect the BA data with RCU to cover a case where our 2673 * internal RX sync mechanism will timeout (not that it's 2674 * supposed to happen) and we will free the session data while 2675 * RX is being processed in parallel 2676 */ 2677 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2678 mvm_sta->sta_id, tid, baid); 2679 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2680 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2681 } else { 2682 u8 baid = mvm_sta->tid_to_baid[tid]; 2683 2684 if (mvm->rx_ba_sessions > 0) 2685 /* check that restart flow didn't zero the counter */ 2686 mvm->rx_ba_sessions--; 2687 if (!iwl_mvm_has_new_rx_api(mvm)) 2688 return 0; 2689 2690 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2691 return -EINVAL; 2692 2693 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2694 if (WARN_ON(!baid_data)) 2695 return -EINVAL; 2696 2697 /* synchronize all rx queues so we can safely delete */ 2698 iwl_mvm_free_reorder(mvm, baid_data); 2699 del_timer_sync(&baid_data->session_timer); 2700 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2701 kfree_rcu(baid_data, rcu_head); 2702 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2703 } 2704 return 0; 2705 2706 out_free: 2707 kfree(baid_data); 2708 return ret; 2709 } 2710 2711 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2712 int tid, u8 queue, bool start) 2713 { 2714 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2715 struct iwl_mvm_add_sta_cmd cmd = {}; 2716 int ret; 2717 u32 status; 2718 2719 lockdep_assert_held(&mvm->mutex); 2720 2721 if (start) { 2722 mvm_sta->tfd_queue_msk |= BIT(queue); 2723 mvm_sta->tid_disable_agg &= ~BIT(tid); 2724 } else { 2725 /* In DQA-mode the queue isn't removed on agg termination */ 2726 mvm_sta->tid_disable_agg |= BIT(tid); 2727 } 2728 2729 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2730 cmd.sta_id = mvm_sta->sta_id; 2731 cmd.add_modify = STA_MODE_MODIFY; 2732 if (!iwl_mvm_has_new_tx_api(mvm)) 2733 cmd.modify_mask = STA_MODIFY_QUEUES; 2734 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2735 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2736 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2737 2738 status = ADD_STA_SUCCESS; 2739 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2740 iwl_mvm_add_sta_cmd_size(mvm), 2741 &cmd, &status); 2742 if (ret) 2743 return ret; 2744 2745 switch (status & IWL_ADD_STA_STATUS_MASK) { 2746 case ADD_STA_SUCCESS: 2747 break; 2748 default: 2749 ret = -EIO; 2750 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2751 start ? "start" : "stopp", status); 2752 break; 2753 } 2754 2755 return ret; 2756 } 2757 2758 const u8 tid_to_mac80211_ac[] = { 2759 IEEE80211_AC_BE, 2760 IEEE80211_AC_BK, 2761 IEEE80211_AC_BK, 2762 IEEE80211_AC_BE, 2763 IEEE80211_AC_VI, 2764 IEEE80211_AC_VI, 2765 IEEE80211_AC_VO, 2766 IEEE80211_AC_VO, 2767 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2768 }; 2769 2770 static const u8 tid_to_ucode_ac[] = { 2771 AC_BE, 2772 AC_BK, 2773 AC_BK, 2774 AC_BE, 2775 AC_VI, 2776 AC_VI, 2777 AC_VO, 2778 AC_VO, 2779 }; 2780 2781 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2782 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2783 { 2784 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2785 struct iwl_mvm_tid_data *tid_data; 2786 u16 normalized_ssn; 2787 u16 txq_id; 2788 int ret; 2789 2790 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2791 return -EINVAL; 2792 2793 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2794 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2795 IWL_ERR(mvm, 2796 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2797 mvmsta->tid_data[tid].state); 2798 return -ENXIO; 2799 } 2800 2801 lockdep_assert_held(&mvm->mutex); 2802 2803 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2804 iwl_mvm_has_new_tx_api(mvm)) { 2805 u8 ac = tid_to_mac80211_ac[tid]; 2806 2807 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2808 if (ret) 2809 return ret; 2810 } 2811 2812 spin_lock_bh(&mvmsta->lock); 2813 2814 /* 2815 * Note the possible cases: 2816 * 1. An enabled TXQ - TXQ needs to become agg'ed 2817 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2818 * it as reserved 2819 */ 2820 txq_id = mvmsta->tid_data[tid].txq_id; 2821 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2822 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2823 IWL_MVM_DQA_MIN_DATA_QUEUE, 2824 IWL_MVM_DQA_MAX_DATA_QUEUE); 2825 if (ret < 0) { 2826 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2827 goto out; 2828 } 2829 2830 txq_id = ret; 2831 2832 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2833 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2834 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2835 ret = -ENXIO; 2836 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2837 tid, IWL_MAX_HW_QUEUES - 1); 2838 goto out; 2839 2840 } else if (unlikely(mvm->queue_info[txq_id].status == 2841 IWL_MVM_QUEUE_SHARED)) { 2842 ret = -ENXIO; 2843 IWL_DEBUG_TX_QUEUES(mvm, 2844 "Can't start tid %d agg on shared queue!\n", 2845 tid); 2846 goto out; 2847 } 2848 2849 IWL_DEBUG_TX_QUEUES(mvm, 2850 "AGG for tid %d will be on queue #%d\n", 2851 tid, txq_id); 2852 2853 tid_data = &mvmsta->tid_data[tid]; 2854 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2855 tid_data->txq_id = txq_id; 2856 *ssn = tid_data->ssn; 2857 2858 IWL_DEBUG_TX_QUEUES(mvm, 2859 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2860 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2861 tid_data->next_reclaimed); 2862 2863 /* 2864 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2865 * to align the wrap around of ssn so we compare relevant values. 2866 */ 2867 normalized_ssn = tid_data->ssn; 2868 if (mvm->trans->trans_cfg->gen2) 2869 normalized_ssn &= 0xff; 2870 2871 if (normalized_ssn == tid_data->next_reclaimed) { 2872 tid_data->state = IWL_AGG_STARTING; 2873 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 2874 } else { 2875 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2876 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 2877 } 2878 2879 out: 2880 spin_unlock_bh(&mvmsta->lock); 2881 2882 return ret; 2883 } 2884 2885 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2886 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2887 bool amsdu) 2888 { 2889 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2890 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2891 unsigned int wdg_timeout = 2892 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2893 int queue, ret; 2894 bool alloc_queue = true; 2895 enum iwl_mvm_queue_status queue_status; 2896 u16 ssn; 2897 2898 struct iwl_trans_txq_scd_cfg cfg = { 2899 .sta_id = mvmsta->sta_id, 2900 .tid = tid, 2901 .frame_limit = buf_size, 2902 .aggregate = true, 2903 }; 2904 2905 /* 2906 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2907 * manager, so this function should never be called in this case. 2908 */ 2909 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2910 return -EINVAL; 2911 2912 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2913 != IWL_MAX_TID_COUNT); 2914 2915 spin_lock_bh(&mvmsta->lock); 2916 ssn = tid_data->ssn; 2917 queue = tid_data->txq_id; 2918 tid_data->state = IWL_AGG_ON; 2919 mvmsta->agg_tids |= BIT(tid); 2920 tid_data->ssn = 0xffff; 2921 tid_data->amsdu_in_ampdu_allowed = amsdu; 2922 spin_unlock_bh(&mvmsta->lock); 2923 2924 if (iwl_mvm_has_new_tx_api(mvm)) { 2925 /* 2926 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2927 * would have failed, so if we are here there is no need to 2928 * allocate a queue. 2929 * However, if aggregation size is different than the default 2930 * size, the scheduler should be reconfigured. 2931 * We cannot do this with the new TX API, so return unsupported 2932 * for now, until it will be offloaded to firmware.. 2933 * Note that if SCD default value changes - this condition 2934 * should be updated as well. 2935 */ 2936 if (buf_size < IWL_FRAME_LIMIT) 2937 return -ENOTSUPP; 2938 2939 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2940 if (ret) 2941 return -EIO; 2942 goto out; 2943 } 2944 2945 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2946 2947 queue_status = mvm->queue_info[queue].status; 2948 2949 /* Maybe there is no need to even alloc a queue... */ 2950 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2951 alloc_queue = false; 2952 2953 /* 2954 * Only reconfig the SCD for the queue if the window size has 2955 * changed from current (become smaller) 2956 */ 2957 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2958 /* 2959 * If reconfiguring an existing queue, it first must be 2960 * drained 2961 */ 2962 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2963 BIT(queue)); 2964 if (ret) { 2965 IWL_ERR(mvm, 2966 "Error draining queue before reconfig\n"); 2967 return ret; 2968 } 2969 2970 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2971 mvmsta->sta_id, tid, 2972 buf_size, ssn); 2973 if (ret) { 2974 IWL_ERR(mvm, 2975 "Error reconfiguring TXQ #%d\n", queue); 2976 return ret; 2977 } 2978 } 2979 2980 if (alloc_queue) 2981 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 2982 &cfg, wdg_timeout); 2983 2984 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2985 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2986 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2987 if (ret) 2988 return -EIO; 2989 } 2990 2991 /* No need to mark as reserved */ 2992 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2993 2994 out: 2995 /* 2996 * Even though in theory the peer could have different 2997 * aggregation reorder buffer sizes for different sessions, 2998 * our ucode doesn't allow for that and has a global limit 2999 * for each station. Therefore, use the minimum of all the 3000 * aggregation sessions and our default value. 3001 */ 3002 mvmsta->max_agg_bufsize = 3003 min(mvmsta->max_agg_bufsize, buf_size); 3004 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3005 3006 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3007 sta->addr, tid); 3008 3009 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3010 } 3011 3012 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3013 struct iwl_mvm_sta *mvmsta, 3014 struct iwl_mvm_tid_data *tid_data) 3015 { 3016 u16 txq_id = tid_data->txq_id; 3017 3018 lockdep_assert_held(&mvm->mutex); 3019 3020 if (iwl_mvm_has_new_tx_api(mvm)) 3021 return; 3022 3023 /* 3024 * The TXQ is marked as reserved only if no traffic came through yet 3025 * This means no traffic has been sent on this TID (agg'd or not), so 3026 * we no longer have use for the queue. Since it hasn't even been 3027 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3028 * free. 3029 */ 3030 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3031 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3032 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3033 } 3034 } 3035 3036 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3037 struct ieee80211_sta *sta, u16 tid) 3038 { 3039 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3040 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3041 u16 txq_id; 3042 int err; 3043 3044 /* 3045 * If mac80211 is cleaning its state, then say that we finished since 3046 * our state has been cleared anyway. 3047 */ 3048 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3049 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3050 return 0; 3051 } 3052 3053 spin_lock_bh(&mvmsta->lock); 3054 3055 txq_id = tid_data->txq_id; 3056 3057 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3058 mvmsta->sta_id, tid, txq_id, tid_data->state); 3059 3060 mvmsta->agg_tids &= ~BIT(tid); 3061 3062 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3063 3064 switch (tid_data->state) { 3065 case IWL_AGG_ON: 3066 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3067 3068 IWL_DEBUG_TX_QUEUES(mvm, 3069 "ssn = %d, next_recl = %d\n", 3070 tid_data->ssn, tid_data->next_reclaimed); 3071 3072 tid_data->ssn = 0xffff; 3073 tid_data->state = IWL_AGG_OFF; 3074 spin_unlock_bh(&mvmsta->lock); 3075 3076 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3077 3078 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3079 return 0; 3080 case IWL_AGG_STARTING: 3081 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3082 /* 3083 * The agg session has been stopped before it was set up. This 3084 * can happen when the AddBA timer times out for example. 3085 */ 3086 3087 /* No barriers since we are under mutex */ 3088 lockdep_assert_held(&mvm->mutex); 3089 3090 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3091 tid_data->state = IWL_AGG_OFF; 3092 err = 0; 3093 break; 3094 default: 3095 IWL_ERR(mvm, 3096 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3097 mvmsta->sta_id, tid, tid_data->state); 3098 IWL_ERR(mvm, 3099 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3100 err = -EINVAL; 3101 } 3102 3103 spin_unlock_bh(&mvmsta->lock); 3104 3105 return err; 3106 } 3107 3108 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3109 struct ieee80211_sta *sta, u16 tid) 3110 { 3111 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3112 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3113 u16 txq_id; 3114 enum iwl_mvm_agg_state old_state; 3115 3116 /* 3117 * First set the agg state to OFF to avoid calling 3118 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3119 */ 3120 spin_lock_bh(&mvmsta->lock); 3121 txq_id = tid_data->txq_id; 3122 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3123 mvmsta->sta_id, tid, txq_id, tid_data->state); 3124 old_state = tid_data->state; 3125 tid_data->state = IWL_AGG_OFF; 3126 mvmsta->agg_tids &= ~BIT(tid); 3127 spin_unlock_bh(&mvmsta->lock); 3128 3129 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3130 3131 if (old_state >= IWL_AGG_ON) { 3132 iwl_mvm_drain_sta(mvm, mvmsta, true); 3133 3134 if (iwl_mvm_has_new_tx_api(mvm)) { 3135 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3136 BIT(tid), 0)) 3137 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3138 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3139 } else { 3140 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 3141 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3142 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3143 } 3144 3145 iwl_mvm_drain_sta(mvm, mvmsta, false); 3146 3147 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3148 } 3149 3150 return 0; 3151 } 3152 3153 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3154 { 3155 int i, max = -1, max_offs = -1; 3156 3157 lockdep_assert_held(&mvm->mutex); 3158 3159 /* Pick the unused key offset with the highest 'deleted' 3160 * counter. Every time a key is deleted, all the counters 3161 * are incremented and the one that was just deleted is 3162 * reset to zero. Thus, the highest counter is the one 3163 * that was deleted longest ago. Pick that one. 3164 */ 3165 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3166 if (test_bit(i, mvm->fw_key_table)) 3167 continue; 3168 if (mvm->fw_key_deleted[i] > max) { 3169 max = mvm->fw_key_deleted[i]; 3170 max_offs = i; 3171 } 3172 } 3173 3174 if (max_offs < 0) 3175 return STA_KEY_IDX_INVALID; 3176 3177 return max_offs; 3178 } 3179 3180 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3181 struct ieee80211_vif *vif, 3182 struct ieee80211_sta *sta) 3183 { 3184 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3185 3186 if (sta) 3187 return iwl_mvm_sta_from_mac80211(sta); 3188 3189 /* 3190 * The device expects GTKs for station interfaces to be 3191 * installed as GTKs for the AP station. If we have no 3192 * station ID, then use AP's station ID. 3193 */ 3194 if (vif->type == NL80211_IFTYPE_STATION && 3195 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3196 u8 sta_id = mvmvif->ap_sta_id; 3197 3198 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3199 lockdep_is_held(&mvm->mutex)); 3200 3201 /* 3202 * It is possible that the 'sta' parameter is NULL, 3203 * for example when a GTK is removed - the sta_id will then 3204 * be the AP ID, and no station was passed by mac80211. 3205 */ 3206 if (IS_ERR_OR_NULL(sta)) 3207 return NULL; 3208 3209 return iwl_mvm_sta_from_mac80211(sta); 3210 } 3211 3212 return NULL; 3213 } 3214 3215 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3216 u32 sta_id, 3217 struct ieee80211_key_conf *key, bool mcast, 3218 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3219 u8 key_offset, bool mfp) 3220 { 3221 union { 3222 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3223 struct iwl_mvm_add_sta_key_cmd cmd; 3224 } u = {}; 3225 __le16 key_flags; 3226 int ret; 3227 u32 status; 3228 u16 keyidx; 3229 u64 pn = 0; 3230 int i, size; 3231 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3232 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3233 3234 if (sta_id == IWL_MVM_INVALID_STA) 3235 return -EINVAL; 3236 3237 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3238 STA_KEY_FLG_KEYID_MSK; 3239 key_flags = cpu_to_le16(keyidx); 3240 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3241 3242 switch (key->cipher) { 3243 case WLAN_CIPHER_SUITE_TKIP: 3244 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3245 if (new_api) { 3246 memcpy((void *)&u.cmd.tx_mic_key, 3247 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3248 IWL_MIC_KEY_SIZE); 3249 3250 memcpy((void *)&u.cmd.rx_mic_key, 3251 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3252 IWL_MIC_KEY_SIZE); 3253 pn = atomic64_read(&key->tx_pn); 3254 3255 } else { 3256 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3257 for (i = 0; i < 5; i++) 3258 u.cmd_v1.tkip_rx_ttak[i] = 3259 cpu_to_le16(tkip_p1k[i]); 3260 } 3261 memcpy(u.cmd.common.key, key->key, key->keylen); 3262 break; 3263 case WLAN_CIPHER_SUITE_CCMP: 3264 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3265 memcpy(u.cmd.common.key, key->key, key->keylen); 3266 if (new_api) 3267 pn = atomic64_read(&key->tx_pn); 3268 break; 3269 case WLAN_CIPHER_SUITE_WEP104: 3270 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3271 /* fall through */ 3272 case WLAN_CIPHER_SUITE_WEP40: 3273 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3274 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3275 break; 3276 case WLAN_CIPHER_SUITE_GCMP_256: 3277 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3278 /* fall through */ 3279 case WLAN_CIPHER_SUITE_GCMP: 3280 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3281 memcpy(u.cmd.common.key, key->key, key->keylen); 3282 if (new_api) 3283 pn = atomic64_read(&key->tx_pn); 3284 break; 3285 default: 3286 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3287 memcpy(u.cmd.common.key, key->key, key->keylen); 3288 } 3289 3290 if (mcast) 3291 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3292 if (mfp) 3293 key_flags |= cpu_to_le16(STA_KEY_MFP); 3294 3295 u.cmd.common.key_offset = key_offset; 3296 u.cmd.common.key_flags = key_flags; 3297 u.cmd.common.sta_id = sta_id; 3298 3299 if (new_api) { 3300 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3301 size = sizeof(u.cmd); 3302 } else { 3303 size = sizeof(u.cmd_v1); 3304 } 3305 3306 status = ADD_STA_SUCCESS; 3307 if (cmd_flags & CMD_ASYNC) 3308 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3309 &u.cmd); 3310 else 3311 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3312 &u.cmd, &status); 3313 3314 switch (status) { 3315 case ADD_STA_SUCCESS: 3316 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3317 break; 3318 default: 3319 ret = -EIO; 3320 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3321 break; 3322 } 3323 3324 return ret; 3325 } 3326 3327 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3328 struct ieee80211_key_conf *keyconf, 3329 u8 sta_id, bool remove_key) 3330 { 3331 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3332 3333 /* verify the key details match the required command's expectations */ 3334 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3335 (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 3336 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3337 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3338 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3339 return -EINVAL; 3340 3341 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3342 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3343 return -EINVAL; 3344 3345 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3346 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3347 3348 if (remove_key) { 3349 /* This is a valid situation for IGTK */ 3350 if (sta_id == IWL_MVM_INVALID_STA) 3351 return 0; 3352 3353 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3354 } else { 3355 struct ieee80211_key_seq seq; 3356 const u8 *pn; 3357 3358 switch (keyconf->cipher) { 3359 case WLAN_CIPHER_SUITE_AES_CMAC: 3360 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3361 break; 3362 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3363 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3364 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3365 break; 3366 default: 3367 return -EINVAL; 3368 } 3369 3370 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3371 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3372 igtk_cmd.ctrl_flags |= 3373 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3374 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3375 pn = seq.aes_cmac.pn; 3376 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3377 ((u64) pn[4] << 8) | 3378 ((u64) pn[3] << 16) | 3379 ((u64) pn[2] << 24) | 3380 ((u64) pn[1] << 32) | 3381 ((u64) pn[0] << 40)); 3382 } 3383 3384 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3385 remove_key ? "removing" : "installing", 3386 igtk_cmd.sta_id); 3387 3388 if (!iwl_mvm_has_new_rx_api(mvm)) { 3389 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3390 .ctrl_flags = igtk_cmd.ctrl_flags, 3391 .key_id = igtk_cmd.key_id, 3392 .sta_id = igtk_cmd.sta_id, 3393 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3394 }; 3395 3396 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3397 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3398 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3399 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3400 } 3401 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3402 sizeof(igtk_cmd), &igtk_cmd); 3403 } 3404 3405 3406 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3407 struct ieee80211_vif *vif, 3408 struct ieee80211_sta *sta) 3409 { 3410 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3411 3412 if (sta) 3413 return sta->addr; 3414 3415 if (vif->type == NL80211_IFTYPE_STATION && 3416 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3417 u8 sta_id = mvmvif->ap_sta_id; 3418 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3419 lockdep_is_held(&mvm->mutex)); 3420 return sta->addr; 3421 } 3422 3423 3424 return NULL; 3425 } 3426 3427 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3428 struct ieee80211_vif *vif, 3429 struct ieee80211_sta *sta, 3430 struct ieee80211_key_conf *keyconf, 3431 u8 key_offset, 3432 bool mcast) 3433 { 3434 int ret; 3435 const u8 *addr; 3436 struct ieee80211_key_seq seq; 3437 u16 p1k[5]; 3438 u32 sta_id; 3439 bool mfp = false; 3440 3441 if (sta) { 3442 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3443 3444 sta_id = mvm_sta->sta_id; 3445 mfp = sta->mfp; 3446 } else if (vif->type == NL80211_IFTYPE_AP && 3447 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3448 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3449 3450 sta_id = mvmvif->mcast_sta.sta_id; 3451 } else { 3452 IWL_ERR(mvm, "Failed to find station id\n"); 3453 return -EINVAL; 3454 } 3455 3456 switch (keyconf->cipher) { 3457 case WLAN_CIPHER_SUITE_TKIP: 3458 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3459 /* get phase 1 key from mac80211 */ 3460 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3461 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3462 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3463 seq.tkip.iv32, p1k, 0, key_offset, 3464 mfp); 3465 break; 3466 case WLAN_CIPHER_SUITE_CCMP: 3467 case WLAN_CIPHER_SUITE_WEP40: 3468 case WLAN_CIPHER_SUITE_WEP104: 3469 case WLAN_CIPHER_SUITE_GCMP: 3470 case WLAN_CIPHER_SUITE_GCMP_256: 3471 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3472 0, NULL, 0, key_offset, mfp); 3473 break; 3474 default: 3475 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3476 0, NULL, 0, key_offset, mfp); 3477 } 3478 3479 return ret; 3480 } 3481 3482 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3483 struct ieee80211_vif *vif, 3484 struct ieee80211_sta *sta, 3485 struct ieee80211_key_conf *keyconf, 3486 u8 key_offset) 3487 { 3488 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3489 struct iwl_mvm_sta *mvm_sta; 3490 u8 sta_id = IWL_MVM_INVALID_STA; 3491 int ret; 3492 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3493 3494 lockdep_assert_held(&mvm->mutex); 3495 3496 if (vif->type != NL80211_IFTYPE_AP || 3497 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3498 /* Get the station id from the mvm local station table */ 3499 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3500 if (!mvm_sta) { 3501 IWL_ERR(mvm, "Failed to find station\n"); 3502 return -EINVAL; 3503 } 3504 sta_id = mvm_sta->sta_id; 3505 3506 /* 3507 * It is possible that the 'sta' parameter is NULL, and thus 3508 * there is a need to retrieve the sta from the local station 3509 * table. 3510 */ 3511 if (!sta) { 3512 sta = rcu_dereference_protected( 3513 mvm->fw_id_to_mac_id[sta_id], 3514 lockdep_is_held(&mvm->mutex)); 3515 if (IS_ERR_OR_NULL(sta)) { 3516 IWL_ERR(mvm, "Invalid station id\n"); 3517 return -EINVAL; 3518 } 3519 } 3520 3521 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3522 return -EINVAL; 3523 } else { 3524 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3525 3526 sta_id = mvmvif->mcast_sta.sta_id; 3527 } 3528 3529 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3530 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3531 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3532 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3533 goto end; 3534 } 3535 3536 /* If the key_offset is not pre-assigned, we need to find a 3537 * new offset to use. In normal cases, the offset is not 3538 * pre-assigned, but during HW_RESTART we want to reuse the 3539 * same indices, so we pass them when this function is called. 3540 * 3541 * In D3 entry, we need to hardcoded the indices (because the 3542 * firmware hardcodes the PTK offset to 0). In this case, we 3543 * need to make sure we don't overwrite the hw_key_idx in the 3544 * keyconf structure, because otherwise we cannot configure 3545 * the original ones back when resuming. 3546 */ 3547 if (key_offset == STA_KEY_IDX_INVALID) { 3548 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3549 if (key_offset == STA_KEY_IDX_INVALID) 3550 return -ENOSPC; 3551 keyconf->hw_key_idx = key_offset; 3552 } 3553 3554 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3555 if (ret) 3556 goto end; 3557 3558 /* 3559 * For WEP, the same key is used for multicast and unicast. Upload it 3560 * again, using the same key offset, and now pointing the other one 3561 * to the same key slot (offset). 3562 * If this fails, remove the original as well. 3563 */ 3564 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3565 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3566 sta) { 3567 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3568 key_offset, !mcast); 3569 if (ret) { 3570 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3571 goto end; 3572 } 3573 } 3574 3575 __set_bit(key_offset, mvm->fw_key_table); 3576 3577 end: 3578 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3579 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3580 sta ? sta->addr : zero_addr, ret); 3581 return ret; 3582 } 3583 3584 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3585 struct ieee80211_vif *vif, 3586 struct ieee80211_sta *sta, 3587 struct ieee80211_key_conf *keyconf) 3588 { 3589 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3590 struct iwl_mvm_sta *mvm_sta; 3591 u8 sta_id = IWL_MVM_INVALID_STA; 3592 int ret, i; 3593 3594 lockdep_assert_held(&mvm->mutex); 3595 3596 /* Get the station from the mvm local station table */ 3597 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3598 if (mvm_sta) 3599 sta_id = mvm_sta->sta_id; 3600 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3601 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3602 3603 3604 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3605 keyconf->keyidx, sta_id); 3606 3607 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3608 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3609 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3610 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3611 3612 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3613 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3614 keyconf->hw_key_idx); 3615 return -ENOENT; 3616 } 3617 3618 /* track which key was deleted last */ 3619 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3620 if (mvm->fw_key_deleted[i] < U8_MAX) 3621 mvm->fw_key_deleted[i]++; 3622 } 3623 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3624 3625 if (sta && !mvm_sta) { 3626 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3627 return 0; 3628 } 3629 3630 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3631 if (ret) 3632 return ret; 3633 3634 /* delete WEP key twice to get rid of (now useless) offset */ 3635 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3636 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3637 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3638 3639 return ret; 3640 } 3641 3642 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3643 struct ieee80211_vif *vif, 3644 struct ieee80211_key_conf *keyconf, 3645 struct ieee80211_sta *sta, u32 iv32, 3646 u16 *phase1key) 3647 { 3648 struct iwl_mvm_sta *mvm_sta; 3649 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3650 bool mfp = sta ? sta->mfp : false; 3651 3652 rcu_read_lock(); 3653 3654 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3655 if (WARN_ON_ONCE(!mvm_sta)) 3656 goto unlock; 3657 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3658 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3659 mfp); 3660 3661 unlock: 3662 rcu_read_unlock(); 3663 } 3664 3665 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3666 struct ieee80211_sta *sta) 3667 { 3668 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3669 struct iwl_mvm_add_sta_cmd cmd = { 3670 .add_modify = STA_MODE_MODIFY, 3671 .sta_id = mvmsta->sta_id, 3672 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3673 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3674 }; 3675 int ret; 3676 3677 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3678 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3679 if (ret) 3680 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3681 } 3682 3683 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3684 struct ieee80211_sta *sta, 3685 enum ieee80211_frame_release_type reason, 3686 u16 cnt, u16 tids, bool more_data, 3687 bool single_sta_queue) 3688 { 3689 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3690 struct iwl_mvm_add_sta_cmd cmd = { 3691 .add_modify = STA_MODE_MODIFY, 3692 .sta_id = mvmsta->sta_id, 3693 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3694 .sleep_tx_count = cpu_to_le16(cnt), 3695 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3696 }; 3697 int tid, ret; 3698 unsigned long _tids = tids; 3699 3700 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3701 * Note that this field is reserved and unused by firmware not 3702 * supporting GO uAPSD, so it's safe to always do this. 3703 */ 3704 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3705 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3706 3707 /* If we're releasing frames from aggregation or dqa queues then check 3708 * if all the queues that we're releasing frames from, combined, have: 3709 * - more frames than the service period, in which case more_data 3710 * needs to be set 3711 * - fewer than 'cnt' frames, in which case we need to adjust the 3712 * firmware command (but do that unconditionally) 3713 */ 3714 if (single_sta_queue) { 3715 int remaining = cnt; 3716 int sleep_tx_count; 3717 3718 spin_lock_bh(&mvmsta->lock); 3719 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3720 struct iwl_mvm_tid_data *tid_data; 3721 u16 n_queued; 3722 3723 tid_data = &mvmsta->tid_data[tid]; 3724 3725 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3726 if (n_queued > remaining) { 3727 more_data = true; 3728 remaining = 0; 3729 break; 3730 } 3731 remaining -= n_queued; 3732 } 3733 sleep_tx_count = cnt - remaining; 3734 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3735 mvmsta->sleep_tx_count = sleep_tx_count; 3736 spin_unlock_bh(&mvmsta->lock); 3737 3738 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3739 if (WARN_ON(cnt - remaining == 0)) { 3740 ieee80211_sta_eosp(sta); 3741 return; 3742 } 3743 } 3744 3745 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3746 if (more_data) 3747 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3748 3749 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3750 mvmsta->next_status_eosp = true; 3751 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3752 } else { 3753 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3754 } 3755 3756 /* block the Tx queues until the FW updated the sleep Tx count */ 3757 iwl_trans_block_txq_ptrs(mvm->trans, true); 3758 3759 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3760 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3761 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3762 if (ret) 3763 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3764 } 3765 3766 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3767 struct iwl_rx_cmd_buffer *rxb) 3768 { 3769 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3770 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3771 struct ieee80211_sta *sta; 3772 u32 sta_id = le32_to_cpu(notif->sta_id); 3773 3774 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3775 return; 3776 3777 rcu_read_lock(); 3778 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3779 if (!IS_ERR_OR_NULL(sta)) 3780 ieee80211_sta_eosp(sta); 3781 rcu_read_unlock(); 3782 } 3783 3784 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3785 struct iwl_mvm_sta *mvmsta, bool disable) 3786 { 3787 struct iwl_mvm_add_sta_cmd cmd = { 3788 .add_modify = STA_MODE_MODIFY, 3789 .sta_id = mvmsta->sta_id, 3790 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3791 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3792 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3793 }; 3794 int ret; 3795 3796 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3797 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3798 if (ret) 3799 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3800 } 3801 3802 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3803 struct ieee80211_sta *sta, 3804 bool disable) 3805 { 3806 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3807 3808 spin_lock_bh(&mvm_sta->lock); 3809 3810 if (mvm_sta->disable_tx == disable) { 3811 spin_unlock_bh(&mvm_sta->lock); 3812 return; 3813 } 3814 3815 mvm_sta->disable_tx = disable; 3816 3817 /* Tell mac80211 to start/stop queuing tx for this station */ 3818 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3819 3820 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3821 3822 spin_unlock_bh(&mvm_sta->lock); 3823 } 3824 3825 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3826 struct iwl_mvm_vif *mvmvif, 3827 struct iwl_mvm_int_sta *sta, 3828 bool disable) 3829 { 3830 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3831 struct iwl_mvm_add_sta_cmd cmd = { 3832 .add_modify = STA_MODE_MODIFY, 3833 .sta_id = sta->sta_id, 3834 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3835 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3836 .mac_id_n_color = cpu_to_le32(id), 3837 }; 3838 int ret; 3839 3840 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, 3841 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3842 if (ret) 3843 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3844 } 3845 3846 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3847 struct iwl_mvm_vif *mvmvif, 3848 bool disable) 3849 { 3850 struct ieee80211_sta *sta; 3851 struct iwl_mvm_sta *mvm_sta; 3852 int i; 3853 3854 lockdep_assert_held(&mvm->mutex); 3855 3856 /* Block/unblock all the stations of the given mvmvif */ 3857 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 3858 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3859 lockdep_is_held(&mvm->mutex)); 3860 if (IS_ERR_OR_NULL(sta)) 3861 continue; 3862 3863 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3864 if (mvm_sta->mac_id_n_color != 3865 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3866 continue; 3867 3868 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3869 } 3870 3871 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3872 return; 3873 3874 /* Need to block/unblock also multicast station */ 3875 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3876 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3877 &mvmvif->mcast_sta, disable); 3878 3879 /* 3880 * Only unblock the broadcast station (FW blocks it for immediate 3881 * quiet, not the driver) 3882 */ 3883 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3884 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3885 &mvmvif->bcast_sta, disable); 3886 } 3887 3888 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3889 { 3890 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3891 struct iwl_mvm_sta *mvmsta; 3892 3893 rcu_read_lock(); 3894 3895 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3896 3897 if (!WARN_ON(!mvmsta)) 3898 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3899 3900 rcu_read_unlock(); 3901 } 3902 3903 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3904 { 3905 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3906 3907 /* 3908 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3909 * to align the wrap around of ssn so we compare relevant values. 3910 */ 3911 if (mvm->trans->trans_cfg->gen2) 3912 sn &= 0xff; 3913 3914 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3915 } 3916 3917 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3918 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 3919 u8 *key, u32 key_len) 3920 { 3921 int ret; 3922 u16 queue; 3923 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3924 struct ieee80211_key_conf *keyconf; 3925 3926 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 3927 NL80211_IFTYPE_UNSPECIFIED, 3928 IWL_STA_LINK); 3929 if (ret) 3930 return ret; 3931 3932 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 3933 addr, sta, &queue, 3934 IWL_MVM_TX_FIFO_BE); 3935 if (ret) 3936 goto out; 3937 3938 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 3939 if (!keyconf) { 3940 ret = -ENOBUFS; 3941 goto out; 3942 } 3943 3944 keyconf->cipher = cipher; 3945 memcpy(keyconf->key, key, key_len); 3946 keyconf->keylen = key_len; 3947 3948 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 3949 0, NULL, 0, 0, true); 3950 kfree(keyconf); 3951 return 0; 3952 out: 3953 iwl_mvm_dealloc_int_sta(mvm, sta); 3954 return ret; 3955 } 3956