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 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 #include <net/mac80211.h> 65 66 #include "mvm.h" 67 #include "sta.h" 68 #include "rs.h" 69 70 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm); 71 72 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 73 u32 sta_id, 74 struct ieee80211_key_conf *key, bool mcast, 75 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 76 u8 key_offset, bool mfp); 77 78 /* 79 * New version of ADD_STA_sta command added new fields at the end of the 80 * structure, so sending the size of the relevant API's structure is enough to 81 * support both API versions. 82 */ 83 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 84 { 85 if (iwl_mvm_has_new_rx_api(mvm) || 86 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 87 return sizeof(struct iwl_mvm_add_sta_cmd); 88 else 89 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 90 } 91 92 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 93 enum nl80211_iftype iftype) 94 { 95 int sta_id; 96 u32 reserved_ids = 0; 97 98 BUILD_BUG_ON(IWL_MVM_STATION_COUNT > 32); 99 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 100 101 lockdep_assert_held(&mvm->mutex); 102 103 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 104 if (iftype != NL80211_IFTYPE_STATION) 105 reserved_ids = BIT(0); 106 107 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 108 for (sta_id = 0; sta_id < ARRAY_SIZE(mvm->fw_id_to_mac_id); sta_id++) { 109 if (BIT(sta_id) & reserved_ids) 110 continue; 111 112 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 113 lockdep_is_held(&mvm->mutex))) 114 return sta_id; 115 } 116 return IWL_MVM_INVALID_STA; 117 } 118 119 /* send station add/update command to firmware */ 120 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 121 bool update, unsigned int flags) 122 { 123 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 124 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 125 .sta_id = mvm_sta->sta_id, 126 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 127 .add_modify = update ? 1 : 0, 128 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 129 STA_FLG_MIMO_EN_MSK | 130 STA_FLG_RTS_MIMO_PROT), 131 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 132 }; 133 int ret; 134 u32 status; 135 u32 agg_size = 0, mpdu_dens = 0; 136 137 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 138 add_sta_cmd.station_type = mvm_sta->sta_type; 139 140 if (!update || (flags & STA_MODIFY_QUEUES)) { 141 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 142 143 if (!iwl_mvm_has_new_tx_api(mvm)) { 144 add_sta_cmd.tfd_queue_msk = 145 cpu_to_le32(mvm_sta->tfd_queue_msk); 146 147 if (flags & STA_MODIFY_QUEUES) 148 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 149 } else { 150 WARN_ON(flags & STA_MODIFY_QUEUES); 151 } 152 } 153 154 switch (sta->bandwidth) { 155 case IEEE80211_STA_RX_BW_160: 156 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 157 /* fall through */ 158 case IEEE80211_STA_RX_BW_80: 159 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 160 /* fall through */ 161 case IEEE80211_STA_RX_BW_40: 162 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 163 /* fall through */ 164 case IEEE80211_STA_RX_BW_20: 165 if (sta->ht_cap.ht_supported) 166 add_sta_cmd.station_flags |= 167 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 168 break; 169 } 170 171 switch (sta->rx_nss) { 172 case 1: 173 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 174 break; 175 case 2: 176 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 177 break; 178 case 3 ... 8: 179 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 180 break; 181 } 182 183 switch (sta->smps_mode) { 184 case IEEE80211_SMPS_AUTOMATIC: 185 case IEEE80211_SMPS_NUM_MODES: 186 WARN_ON(1); 187 break; 188 case IEEE80211_SMPS_STATIC: 189 /* override NSS */ 190 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 191 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 192 break; 193 case IEEE80211_SMPS_DYNAMIC: 194 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 195 break; 196 case IEEE80211_SMPS_OFF: 197 /* nothing */ 198 break; 199 } 200 201 if (sta->ht_cap.ht_supported) { 202 add_sta_cmd.station_flags_msk |= 203 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 204 STA_FLG_AGG_MPDU_DENS_MSK); 205 206 mpdu_dens = sta->ht_cap.ampdu_density; 207 } 208 209 if (sta->vht_cap.vht_supported) { 210 agg_size = sta->vht_cap.cap & 211 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 212 agg_size >>= 213 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 214 } else if (sta->ht_cap.ht_supported) { 215 agg_size = sta->ht_cap.ampdu_factor; 216 } 217 218 add_sta_cmd.station_flags |= 219 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 220 add_sta_cmd.station_flags |= 221 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 222 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 223 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 224 225 if (sta->wme) { 226 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 227 228 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 229 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 230 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 231 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 232 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 233 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 234 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 235 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 236 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 237 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 238 } 239 240 status = ADD_STA_SUCCESS; 241 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 242 iwl_mvm_add_sta_cmd_size(mvm), 243 &add_sta_cmd, &status); 244 if (ret) 245 return ret; 246 247 switch (status & IWL_ADD_STA_STATUS_MASK) { 248 case ADD_STA_SUCCESS: 249 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 250 break; 251 default: 252 ret = -EIO; 253 IWL_ERR(mvm, "ADD_STA failed\n"); 254 break; 255 } 256 257 return ret; 258 } 259 260 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 261 { 262 struct iwl_mvm_baid_data *data = 263 from_timer(data, t, session_timer); 264 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 265 struct iwl_mvm_baid_data *ba_data; 266 struct ieee80211_sta *sta; 267 struct iwl_mvm_sta *mvm_sta; 268 unsigned long timeout; 269 270 rcu_read_lock(); 271 272 ba_data = rcu_dereference(*rcu_ptr); 273 274 if (WARN_ON(!ba_data)) 275 goto unlock; 276 277 if (!ba_data->timeout) 278 goto unlock; 279 280 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 281 if (time_is_after_jiffies(timeout)) { 282 mod_timer(&ba_data->session_timer, timeout); 283 goto unlock; 284 } 285 286 /* Timer expired */ 287 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 288 289 /* 290 * sta should be valid unless the following happens: 291 * The firmware asserts which triggers a reconfig flow, but 292 * the reconfig fails before we set the pointer to sta into 293 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 294 * A-MDPU and hence the timer continues to run. Then, the 295 * timer expires and sta is NULL. 296 */ 297 if (!sta) 298 goto unlock; 299 300 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 301 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 302 sta->addr, ba_data->tid); 303 unlock: 304 rcu_read_unlock(); 305 } 306 307 /* Disable aggregations for a bitmap of TIDs for a given station */ 308 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 309 unsigned long disable_agg_tids, 310 bool remove_queue) 311 { 312 struct iwl_mvm_add_sta_cmd cmd = {}; 313 struct ieee80211_sta *sta; 314 struct iwl_mvm_sta *mvmsta; 315 u32 status; 316 u8 sta_id; 317 int ret; 318 319 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 320 return -EINVAL; 321 322 sta_id = mvm->queue_info[queue].ra_sta_id; 323 324 rcu_read_lock(); 325 326 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 327 328 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 329 rcu_read_unlock(); 330 return -EINVAL; 331 } 332 333 mvmsta = iwl_mvm_sta_from_mac80211(sta); 334 335 mvmsta->tid_disable_agg |= disable_agg_tids; 336 337 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 338 cmd.sta_id = mvmsta->sta_id; 339 cmd.add_modify = STA_MODE_MODIFY; 340 cmd.modify_mask = STA_MODIFY_QUEUES; 341 if (disable_agg_tids) 342 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 343 if (remove_queue) 344 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 345 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 346 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 347 348 rcu_read_unlock(); 349 350 /* Notify FW of queue removal from the STA queues */ 351 status = ADD_STA_SUCCESS; 352 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 353 iwl_mvm_add_sta_cmd_size(mvm), 354 &cmd, &status); 355 356 return ret; 357 } 358 359 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, 360 int mac80211_queue, u8 tid, u8 flags) 361 { 362 struct iwl_scd_txq_cfg_cmd cmd = { 363 .scd_queue = queue, 364 .action = SCD_CFG_DISABLE_QUEUE, 365 }; 366 bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE; 367 int ret; 368 369 if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES)) 370 return -EINVAL; 371 372 if (iwl_mvm_has_new_tx_api(mvm)) { 373 if (remove_mac_queue) 374 mvm->hw_queue_to_mac80211[queue] &= 375 ~BIT(mac80211_queue); 376 377 iwl_trans_txq_free(mvm->trans, queue); 378 379 return 0; 380 } 381 382 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 383 return 0; 384 385 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 386 387 /* 388 * If there is another TID with the same AC - don't remove the MAC queue 389 * from the mapping 390 */ 391 if (tid < IWL_MAX_TID_COUNT) { 392 unsigned long tid_bitmap = 393 mvm->queue_info[queue].tid_bitmap; 394 int ac = tid_to_mac80211_ac[tid]; 395 int i; 396 397 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) { 398 if (tid_to_mac80211_ac[i] == ac) 399 remove_mac_queue = false; 400 } 401 } 402 403 if (remove_mac_queue) 404 mvm->hw_queue_to_mac80211[queue] &= 405 ~BIT(mac80211_queue); 406 407 cmd.action = mvm->queue_info[queue].tid_bitmap ? 408 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 409 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 410 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 411 412 IWL_DEBUG_TX_QUEUES(mvm, 413 "Disabling TXQ #%d tids=0x%x (mac80211 map:0x%x)\n", 414 queue, 415 mvm->queue_info[queue].tid_bitmap, 416 mvm->hw_queue_to_mac80211[queue]); 417 418 /* If the queue is still enabled - nothing left to do in this func */ 419 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 420 return 0; 421 422 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 423 cmd.tid = mvm->queue_info[queue].txq_tid; 424 425 /* Make sure queue info is correct even though we overwrite it */ 426 WARN(mvm->queue_info[queue].tid_bitmap || 427 mvm->hw_queue_to_mac80211[queue], 428 "TXQ #%d info out-of-sync - mac map=0x%x, tids=0x%x\n", 429 queue, mvm->hw_queue_to_mac80211[queue], 430 mvm->queue_info[queue].tid_bitmap); 431 432 /* If we are here - the queue is freed and we can zero out these vals */ 433 mvm->queue_info[queue].tid_bitmap = 0; 434 mvm->hw_queue_to_mac80211[queue] = 0; 435 436 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 437 mvm->queue_info[queue].reserved = false; 438 439 iwl_trans_txq_disable(mvm->trans, queue, false); 440 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags, 441 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 442 443 if (ret) 444 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 445 queue, ret); 446 return ret; 447 } 448 449 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 450 { 451 struct ieee80211_sta *sta; 452 struct iwl_mvm_sta *mvmsta; 453 unsigned long tid_bitmap; 454 unsigned long agg_tids = 0; 455 u8 sta_id; 456 int tid; 457 458 lockdep_assert_held(&mvm->mutex); 459 460 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 461 return -EINVAL; 462 463 sta_id = mvm->queue_info[queue].ra_sta_id; 464 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 465 466 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 467 lockdep_is_held(&mvm->mutex)); 468 469 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 470 return -EINVAL; 471 472 mvmsta = iwl_mvm_sta_from_mac80211(sta); 473 474 spin_lock_bh(&mvmsta->lock); 475 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 476 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 477 agg_tids |= BIT(tid); 478 } 479 spin_unlock_bh(&mvmsta->lock); 480 481 return agg_tids; 482 } 483 484 /* 485 * Remove a queue from a station's resources. 486 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 487 * doesn't disable the queue 488 */ 489 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 490 { 491 struct ieee80211_sta *sta; 492 struct iwl_mvm_sta *mvmsta; 493 unsigned long tid_bitmap; 494 unsigned long disable_agg_tids = 0; 495 u8 sta_id; 496 int tid; 497 498 lockdep_assert_held(&mvm->mutex); 499 500 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 501 return -EINVAL; 502 503 sta_id = mvm->queue_info[queue].ra_sta_id; 504 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 505 506 rcu_read_lock(); 507 508 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 509 510 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 511 rcu_read_unlock(); 512 return 0; 513 } 514 515 mvmsta = iwl_mvm_sta_from_mac80211(sta); 516 517 spin_lock_bh(&mvmsta->lock); 518 /* Unmap MAC queues and TIDs from this queue */ 519 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 520 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 521 disable_agg_tids |= BIT(tid); 522 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 523 } 524 525 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 526 spin_unlock_bh(&mvmsta->lock); 527 528 rcu_read_unlock(); 529 530 /* 531 * The TX path may have been using this TXQ_ID from the tid_data, 532 * so make sure it's no longer running so that we can safely reuse 533 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 534 * above, but nothing guarantees we've stopped using them. Thus, 535 * without this, we could get to iwl_mvm_disable_txq() and remove 536 * the queue while still sending frames to it. 537 */ 538 synchronize_net(); 539 540 return disable_agg_tids; 541 } 542 543 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 544 u8 new_sta_id) 545 { 546 struct iwl_mvm_sta *mvmsta; 547 u8 txq_curr_ac, sta_id, tid; 548 unsigned long disable_agg_tids = 0; 549 bool same_sta; 550 int ret; 551 552 lockdep_assert_held(&mvm->mutex); 553 554 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 555 return -EINVAL; 556 557 txq_curr_ac = mvm->queue_info[queue].mac80211_ac; 558 sta_id = mvm->queue_info[queue].ra_sta_id; 559 tid = mvm->queue_info[queue].txq_tid; 560 561 same_sta = sta_id == new_sta_id; 562 563 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 564 if (WARN_ON(!mvmsta)) 565 return -EINVAL; 566 567 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 568 /* Disable the queue */ 569 if (disable_agg_tids) 570 iwl_mvm_invalidate_sta_queue(mvm, queue, 571 disable_agg_tids, false); 572 573 ret = iwl_mvm_disable_txq(mvm, queue, 574 mvmsta->vif->hw_queue[txq_curr_ac], 575 tid, 0); 576 if (ret) { 577 IWL_ERR(mvm, 578 "Failed to free inactive queue %d (ret=%d)\n", 579 queue, ret); 580 581 return ret; 582 } 583 584 /* If TXQ is allocated to another STA, update removal in FW */ 585 if (!same_sta) 586 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 587 588 return 0; 589 } 590 591 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 592 unsigned long tfd_queue_mask, u8 ac) 593 { 594 int queue = 0; 595 u8 ac_to_queue[IEEE80211_NUM_ACS]; 596 int i; 597 598 /* 599 * This protects us against grabbing a queue that's being reconfigured 600 * by the inactivity checker. 601 */ 602 lockdep_assert_held(&mvm->mutex); 603 604 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 605 return -EINVAL; 606 607 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 608 609 /* See what ACs the existing queues for this STA have */ 610 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 611 /* Only DATA queues can be shared */ 612 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 613 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 614 continue; 615 616 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 617 } 618 619 /* 620 * The queue to share is chosen only from DATA queues as follows (in 621 * descending priority): 622 * 1. An AC_BE queue 623 * 2. Same AC queue 624 * 3. Highest AC queue that is lower than new AC 625 * 4. Any existing AC (there always is at least 1 DATA queue) 626 */ 627 628 /* Priority 1: An AC_BE queue */ 629 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 630 queue = ac_to_queue[IEEE80211_AC_BE]; 631 /* Priority 2: Same AC queue */ 632 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 633 queue = ac_to_queue[ac]; 634 /* Priority 3a: If new AC is VO and VI exists - use VI */ 635 else if (ac == IEEE80211_AC_VO && 636 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 637 queue = ac_to_queue[IEEE80211_AC_VI]; 638 /* Priority 3b: No BE so only AC less than the new one is BK */ 639 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 640 queue = ac_to_queue[IEEE80211_AC_BK]; 641 /* Priority 4a: No BE nor BK - use VI if exists */ 642 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 643 queue = ac_to_queue[IEEE80211_AC_VI]; 644 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 645 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 646 queue = ac_to_queue[IEEE80211_AC_VO]; 647 648 /* Make sure queue found (or not) is legal */ 649 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 650 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 651 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 652 IWL_ERR(mvm, "No DATA queues available to share\n"); 653 return -ENOSPC; 654 } 655 656 return queue; 657 } 658 659 /* 660 * If a given queue has a higher AC than the TID stream that is being compared 661 * to, the queue needs to be redirected to the lower AC. This function does that 662 * in such a case, otherwise - if no redirection required - it does nothing, 663 * unless the %force param is true. 664 */ 665 static int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, 666 int ac, int ssn, unsigned int wdg_timeout, 667 bool force) 668 { 669 struct iwl_scd_txq_cfg_cmd cmd = { 670 .scd_queue = queue, 671 .action = SCD_CFG_DISABLE_QUEUE, 672 }; 673 bool shared_queue; 674 unsigned long mq; 675 int ret; 676 677 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 678 return -EINVAL; 679 680 /* 681 * If the AC is lower than current one - FIFO needs to be redirected to 682 * the lowest one of the streams in the queue. Check if this is needed 683 * here. 684 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 685 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 686 * we need to check if the numerical value of X is LARGER than of Y. 687 */ 688 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 689 IWL_DEBUG_TX_QUEUES(mvm, 690 "No redirection needed on TXQ #%d\n", 691 queue); 692 return 0; 693 } 694 695 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 696 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 697 cmd.tid = mvm->queue_info[queue].txq_tid; 698 mq = mvm->hw_queue_to_mac80211[queue]; 699 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 700 701 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 702 queue, iwl_mvm_ac_to_tx_fifo[ac]); 703 704 /* Stop MAC queues and wait for this queue to empty */ 705 iwl_mvm_stop_mac_queues(mvm, mq); 706 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 707 if (ret) { 708 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 709 queue); 710 ret = -EIO; 711 goto out; 712 } 713 714 /* Before redirecting the queue we need to de-activate it */ 715 iwl_trans_txq_disable(mvm->trans, queue, false); 716 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 717 if (ret) 718 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 719 ret); 720 721 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 722 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 723 724 /* Update the TID "owner" of the queue */ 725 mvm->queue_info[queue].txq_tid = tid; 726 727 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 728 729 /* Redirect to lower AC */ 730 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 731 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 732 733 /* Update AC marking of the queue */ 734 mvm->queue_info[queue].mac80211_ac = ac; 735 736 /* 737 * Mark queue as shared in transport if shared 738 * Note this has to be done after queue enablement because enablement 739 * can also set this value, and there is no indication there to shared 740 * queues 741 */ 742 if (shared_queue) 743 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 744 745 out: 746 /* Continue using the MAC queues */ 747 iwl_mvm_start_mac_queues(mvm, mq); 748 749 return ret; 750 } 751 752 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 753 u8 minq, u8 maxq) 754 { 755 int i; 756 757 lockdep_assert_held(&mvm->mutex); 758 759 /* This should not be hit with new TX path */ 760 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 761 return -ENOSPC; 762 763 /* Start by looking for a free queue */ 764 for (i = minq; i <= maxq; i++) 765 if (mvm->queue_info[i].tid_bitmap == 0 && 766 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 767 return i; 768 769 return -ENOSPC; 770 } 771 772 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue, 773 u8 sta_id, u8 tid, unsigned int timeout) 774 { 775 int queue, size = IWL_DEFAULT_QUEUE_SIZE; 776 777 if (tid == IWL_MAX_TID_COUNT) { 778 tid = IWL_MGMT_TID; 779 size = IWL_MGMT_QUEUE_SIZE; 780 } 781 queue = iwl_trans_txq_alloc(mvm->trans, 782 cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), 783 sta_id, tid, SCD_QUEUE_CFG, size, timeout); 784 785 if (queue < 0) { 786 IWL_DEBUG_TX_QUEUES(mvm, 787 "Failed allocating TXQ for sta %d tid %d, ret: %d\n", 788 sta_id, tid, queue); 789 return queue; 790 } 791 792 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 793 queue, sta_id, tid); 794 795 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 796 IWL_DEBUG_TX_QUEUES(mvm, 797 "Enabling TXQ #%d (mac80211 map:0x%x)\n", 798 queue, mvm->hw_queue_to_mac80211[queue]); 799 800 return queue; 801 } 802 803 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 804 struct ieee80211_sta *sta, u8 ac, 805 int tid) 806 { 807 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 808 unsigned int wdg_timeout = 809 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 810 u8 mac_queue = mvmsta->vif->hw_queue[ac]; 811 int queue = -1; 812 813 lockdep_assert_held(&mvm->mutex); 814 815 IWL_DEBUG_TX_QUEUES(mvm, 816 "Allocating queue for sta %d on tid %d\n", 817 mvmsta->sta_id, tid); 818 queue = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, mvmsta->sta_id, tid, 819 wdg_timeout); 820 if (queue < 0) 821 return queue; 822 823 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 824 825 spin_lock_bh(&mvmsta->lock); 826 mvmsta->tid_data[tid].txq_id = queue; 827 spin_unlock_bh(&mvmsta->lock); 828 829 return 0; 830 } 831 832 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue, 833 int mac80211_queue, u8 sta_id, u8 tid) 834 { 835 bool enable_queue = true; 836 837 /* Make sure this TID isn't already enabled */ 838 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 839 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 840 queue, tid); 841 return false; 842 } 843 844 /* Update mappings and refcounts */ 845 if (mvm->queue_info[queue].tid_bitmap) 846 enable_queue = false; 847 848 if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) { 849 WARN(mac80211_queue >= 850 BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]), 851 "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n", 852 mac80211_queue, queue, sta_id, tid); 853 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); 854 } 855 856 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 857 mvm->queue_info[queue].ra_sta_id = sta_id; 858 859 if (enable_queue) { 860 if (tid != IWL_MAX_TID_COUNT) 861 mvm->queue_info[queue].mac80211_ac = 862 tid_to_mac80211_ac[tid]; 863 else 864 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 865 866 mvm->queue_info[queue].txq_tid = tid; 867 } 868 869 IWL_DEBUG_TX_QUEUES(mvm, 870 "Enabling TXQ #%d tids=0x%x (mac80211 map:0x%x)\n", 871 queue, mvm->queue_info[queue].tid_bitmap, 872 mvm->hw_queue_to_mac80211[queue]); 873 874 return enable_queue; 875 } 876 877 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, 878 int mac80211_queue, u16 ssn, 879 const struct iwl_trans_txq_scd_cfg *cfg, 880 unsigned int wdg_timeout) 881 { 882 struct iwl_scd_txq_cfg_cmd cmd = { 883 .scd_queue = queue, 884 .action = SCD_CFG_ENABLE_QUEUE, 885 .window = cfg->frame_limit, 886 .sta_id = cfg->sta_id, 887 .ssn = cpu_to_le16(ssn), 888 .tx_fifo = cfg->fifo, 889 .aggregate = cfg->aggregate, 890 .tid = cfg->tid, 891 }; 892 bool inc_ssn; 893 894 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 895 return false; 896 897 /* Send the enabling command if we need to */ 898 if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue, 899 cfg->sta_id, cfg->tid)) 900 return false; 901 902 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 903 NULL, wdg_timeout); 904 if (inc_ssn) 905 le16_add_cpu(&cmd.ssn, 1); 906 907 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 908 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 909 910 return inc_ssn; 911 } 912 913 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 914 { 915 struct iwl_scd_txq_cfg_cmd cmd = { 916 .scd_queue = queue, 917 .action = SCD_CFG_UPDATE_QUEUE_TID, 918 }; 919 int tid; 920 unsigned long tid_bitmap; 921 int ret; 922 923 lockdep_assert_held(&mvm->mutex); 924 925 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 926 return; 927 928 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 929 930 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 931 return; 932 933 /* Find any TID for queue */ 934 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 935 cmd.tid = tid; 936 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 937 938 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 939 if (ret) { 940 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 941 queue, ret); 942 return; 943 } 944 945 mvm->queue_info[queue].txq_tid = tid; 946 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 947 queue, tid); 948 } 949 950 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 951 { 952 struct ieee80211_sta *sta; 953 struct iwl_mvm_sta *mvmsta; 954 u8 sta_id; 955 int tid = -1; 956 unsigned long tid_bitmap; 957 unsigned int wdg_timeout; 958 int ssn; 959 int ret = true; 960 961 /* queue sharing is disabled on new TX path */ 962 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 963 return; 964 965 lockdep_assert_held(&mvm->mutex); 966 967 sta_id = mvm->queue_info[queue].ra_sta_id; 968 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 969 970 /* Find TID for queue, and make sure it is the only one on the queue */ 971 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 972 if (tid_bitmap != BIT(tid)) { 973 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 974 queue, tid_bitmap); 975 return; 976 } 977 978 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 979 tid); 980 981 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 982 lockdep_is_held(&mvm->mutex)); 983 984 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 985 return; 986 987 mvmsta = iwl_mvm_sta_from_mac80211(sta); 988 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 989 990 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 991 992 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, 993 tid_to_mac80211_ac[tid], ssn, 994 wdg_timeout, true); 995 if (ret) { 996 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 997 return; 998 } 999 1000 /* If aggs should be turned back on - do it */ 1001 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1002 struct iwl_mvm_add_sta_cmd cmd = {0}; 1003 1004 mvmsta->tid_disable_agg &= ~BIT(tid); 1005 1006 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1007 cmd.sta_id = mvmsta->sta_id; 1008 cmd.add_modify = STA_MODE_MODIFY; 1009 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1010 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1011 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1012 1013 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1014 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1015 if (!ret) { 1016 IWL_DEBUG_TX_QUEUES(mvm, 1017 "TXQ #%d is now aggregated again\n", 1018 queue); 1019 1020 /* Mark queue intenally as aggregating again */ 1021 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1022 } 1023 } 1024 1025 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1026 } 1027 1028 /* 1029 * Remove inactive TIDs of a given queue. 1030 * If all queue TIDs are inactive - mark the queue as inactive 1031 * If only some the queue TIDs are inactive - unmap them from the queue 1032 * 1033 * Returns %true if all TIDs were removed and the queue could be reused. 1034 */ 1035 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1036 struct iwl_mvm_sta *mvmsta, int queue, 1037 unsigned long tid_bitmap, 1038 unsigned long *unshare_queues, 1039 unsigned long *changetid_queues) 1040 { 1041 int tid; 1042 1043 lockdep_assert_held(&mvmsta->lock); 1044 lockdep_assert_held(&mvm->mutex); 1045 1046 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1047 return false; 1048 1049 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1050 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1051 /* If some TFDs are still queued - don't mark TID as inactive */ 1052 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1053 tid_bitmap &= ~BIT(tid); 1054 1055 /* Don't mark as inactive any TID that has an active BA */ 1056 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1057 tid_bitmap &= ~BIT(tid); 1058 } 1059 1060 /* If all TIDs in the queue are inactive - return it can be reused */ 1061 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1062 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1063 return true; 1064 } 1065 1066 /* 1067 * If we are here, this is a shared queue and not all TIDs timed-out. 1068 * Remove the ones that did. 1069 */ 1070 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1071 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]; 1072 u16 tid_bitmap; 1073 1074 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1075 mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue); 1076 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1077 1078 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1079 1080 /* 1081 * We need to take into account a situation in which a TXQ was 1082 * allocated to TID x, and then turned shared by adding TIDs y 1083 * and z. If TID x becomes inactive and is removed from the TXQ, 1084 * ownership must be given to one of the remaining TIDs. 1085 * This is mainly because if TID x continues - a new queue can't 1086 * be allocated for it as long as it is an owner of another TXQ. 1087 * 1088 * Mark this queue in the right bitmap, we'll send the command 1089 * to the firmware later. 1090 */ 1091 if (!(tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1092 set_bit(queue, changetid_queues); 1093 1094 IWL_DEBUG_TX_QUEUES(mvm, 1095 "Removing inactive TID %d from shared Q:%d\n", 1096 tid, queue); 1097 } 1098 1099 IWL_DEBUG_TX_QUEUES(mvm, 1100 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1101 mvm->queue_info[queue].tid_bitmap); 1102 1103 /* 1104 * There may be different TIDs with the same mac queues, so make 1105 * sure all TIDs have existing corresponding mac queues enabled 1106 */ 1107 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1108 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1109 mvm->hw_queue_to_mac80211[queue] |= 1110 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]); 1111 } 1112 1113 /* If the queue is marked as shared - "unshare" it */ 1114 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1115 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1116 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1117 queue); 1118 set_bit(queue, unshare_queues); 1119 } 1120 1121 return false; 1122 } 1123 1124 /* 1125 * Check for inactivity - this includes checking if any queue 1126 * can be unshared and finding one (and only one) that can be 1127 * reused. 1128 * This function is also invoked as a sort of clean-up task, 1129 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1130 * 1131 * Returns the queue number, or -ENOSPC. 1132 */ 1133 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1134 { 1135 unsigned long now = jiffies; 1136 unsigned long unshare_queues = 0; 1137 unsigned long changetid_queues = 0; 1138 int i, ret, free_queue = -ENOSPC; 1139 1140 lockdep_assert_held(&mvm->mutex); 1141 1142 if (iwl_mvm_has_new_tx_api(mvm)) 1143 return -ENOSPC; 1144 1145 rcu_read_lock(); 1146 1147 /* we skip the CMD queue below by starting at 1 */ 1148 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1149 1150 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1151 struct ieee80211_sta *sta; 1152 struct iwl_mvm_sta *mvmsta; 1153 u8 sta_id; 1154 int tid; 1155 unsigned long inactive_tid_bitmap = 0; 1156 unsigned long queue_tid_bitmap; 1157 1158 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1159 if (!queue_tid_bitmap) 1160 continue; 1161 1162 /* If TXQ isn't in active use anyway - nothing to do here... */ 1163 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1164 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1165 continue; 1166 1167 /* Check to see if there are inactive TIDs on this queue */ 1168 for_each_set_bit(tid, &queue_tid_bitmap, 1169 IWL_MAX_TID_COUNT + 1) { 1170 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1171 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1172 continue; 1173 1174 inactive_tid_bitmap |= BIT(tid); 1175 } 1176 1177 /* If all TIDs are active - finish check on this queue */ 1178 if (!inactive_tid_bitmap) 1179 continue; 1180 1181 /* 1182 * If we are here - the queue hadn't been served recently and is 1183 * in use 1184 */ 1185 1186 sta_id = mvm->queue_info[i].ra_sta_id; 1187 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1188 1189 /* 1190 * If the STA doesn't exist anymore, it isn't an error. It could 1191 * be that it was removed since getting the queues, and in this 1192 * case it should've inactivated its queues anyway. 1193 */ 1194 if (IS_ERR_OR_NULL(sta)) 1195 continue; 1196 1197 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1198 1199 spin_lock_bh(&mvmsta->lock); 1200 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1201 inactive_tid_bitmap, 1202 &unshare_queues, 1203 &changetid_queues); 1204 if (ret >= 0 && free_queue < 0) 1205 free_queue = ret; 1206 /* only unlock sta lock - we still need the queue info lock */ 1207 spin_unlock_bh(&mvmsta->lock); 1208 } 1209 1210 rcu_read_unlock(); 1211 1212 /* Reconfigure queues requiring reconfiguation */ 1213 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1214 iwl_mvm_unshare_queue(mvm, i); 1215 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1216 iwl_mvm_change_queue_tid(mvm, i); 1217 1218 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1219 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, 1220 alloc_for_sta); 1221 if (ret) 1222 return ret; 1223 } 1224 1225 return free_queue; 1226 } 1227 1228 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1229 struct ieee80211_sta *sta, u8 ac, int tid, 1230 struct ieee80211_hdr *hdr) 1231 { 1232 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1233 struct iwl_trans_txq_scd_cfg cfg = { 1234 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1235 .sta_id = mvmsta->sta_id, 1236 .tid = tid, 1237 .frame_limit = IWL_FRAME_LIMIT, 1238 }; 1239 unsigned int wdg_timeout = 1240 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1241 u8 mac_queue = mvmsta->vif->hw_queue[ac]; 1242 int queue = -1; 1243 unsigned long disable_agg_tids = 0; 1244 enum iwl_mvm_agg_state queue_state; 1245 bool shared_queue = false, inc_ssn; 1246 int ssn; 1247 unsigned long tfd_queue_mask; 1248 int ret; 1249 1250 lockdep_assert_held(&mvm->mutex); 1251 1252 if (iwl_mvm_has_new_tx_api(mvm)) 1253 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1254 1255 spin_lock_bh(&mvmsta->lock); 1256 tfd_queue_mask = mvmsta->tfd_queue_msk; 1257 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1258 spin_unlock_bh(&mvmsta->lock); 1259 1260 /* 1261 * Non-QoS, QoS NDP and MGMT frames should go to a MGMT queue, if one 1262 * exists 1263 */ 1264 if (!ieee80211_is_data_qos(hdr->frame_control) || 1265 ieee80211_is_qos_nullfunc(hdr->frame_control)) { 1266 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1267 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1268 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1269 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1270 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1271 queue); 1272 1273 /* If no such queue is found, we'll use a DATA queue instead */ 1274 } 1275 1276 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1277 (mvm->queue_info[mvmsta->reserved_queue].status == 1278 IWL_MVM_QUEUE_RESERVED)) { 1279 queue = mvmsta->reserved_queue; 1280 mvm->queue_info[queue].reserved = true; 1281 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1282 } 1283 1284 if (queue < 0) 1285 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1286 IWL_MVM_DQA_MIN_DATA_QUEUE, 1287 IWL_MVM_DQA_MAX_DATA_QUEUE); 1288 if (queue < 0) { 1289 /* try harder - perhaps kill an inactive queue */ 1290 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1291 } 1292 1293 /* No free queue - we'll have to share */ 1294 if (queue <= 0) { 1295 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1296 if (queue > 0) { 1297 shared_queue = true; 1298 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1299 } 1300 } 1301 1302 /* 1303 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1304 * to make sure no one else takes it. 1305 * This will allow avoiding re-acquiring the lock at the end of the 1306 * configuration. On error we'll mark it back as free. 1307 */ 1308 if (queue > 0 && !shared_queue) 1309 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1310 1311 /* This shouldn't happen - out of queues */ 1312 if (WARN_ON(queue <= 0)) { 1313 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1314 tid, cfg.sta_id); 1315 return queue; 1316 } 1317 1318 /* 1319 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1320 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1321 * as aggregatable. 1322 * Mark all DATA queues as allowing to be aggregated at some point 1323 */ 1324 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1325 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1326 1327 IWL_DEBUG_TX_QUEUES(mvm, 1328 "Allocating %squeue #%d to sta %d on tid %d\n", 1329 shared_queue ? "shared " : "", queue, 1330 mvmsta->sta_id, tid); 1331 1332 if (shared_queue) { 1333 /* Disable any open aggs on this queue */ 1334 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1335 1336 if (disable_agg_tids) { 1337 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1338 queue); 1339 iwl_mvm_invalidate_sta_queue(mvm, queue, 1340 disable_agg_tids, false); 1341 } 1342 } 1343 1344 inc_ssn = iwl_mvm_enable_txq(mvm, queue, mac_queue, 1345 ssn, &cfg, wdg_timeout); 1346 1347 /* 1348 * Mark queue as shared in transport if shared 1349 * Note this has to be done after queue enablement because enablement 1350 * can also set this value, and there is no indication there to shared 1351 * queues 1352 */ 1353 if (shared_queue) 1354 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1355 1356 spin_lock_bh(&mvmsta->lock); 1357 /* 1358 * This looks racy, but it is not. We have only one packet for 1359 * this ra/tid in our Tx path since we stop the Qdisc when we 1360 * need to allocate a new TFD queue. 1361 */ 1362 if (inc_ssn) { 1363 mvmsta->tid_data[tid].seq_number += 0x10; 1364 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1365 } 1366 mvmsta->tid_data[tid].txq_id = queue; 1367 mvmsta->tfd_queue_msk |= BIT(queue); 1368 queue_state = mvmsta->tid_data[tid].state; 1369 1370 if (mvmsta->reserved_queue == queue) 1371 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1372 spin_unlock_bh(&mvmsta->lock); 1373 1374 if (!shared_queue) { 1375 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1376 if (ret) 1377 goto out_err; 1378 1379 /* If we need to re-enable aggregations... */ 1380 if (queue_state == IWL_AGG_ON) { 1381 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1382 if (ret) 1383 goto out_err; 1384 } 1385 } else { 1386 /* Redirect queue, if needed */ 1387 ret = iwl_mvm_scd_queue_redirect(mvm, queue, tid, ac, ssn, 1388 wdg_timeout, false); 1389 if (ret) 1390 goto out_err; 1391 } 1392 1393 return 0; 1394 1395 out_err: 1396 iwl_mvm_disable_txq(mvm, queue, mac_queue, tid, 0); 1397 1398 return ret; 1399 } 1400 1401 static inline u8 iwl_mvm_tid_to_ac_queue(int tid) 1402 { 1403 if (tid == IWL_MAX_TID_COUNT) 1404 return IEEE80211_AC_VO; /* MGMT */ 1405 1406 return tid_to_mac80211_ac[tid]; 1407 } 1408 1409 static void iwl_mvm_tx_deferred_stream(struct iwl_mvm *mvm, 1410 struct ieee80211_sta *sta, int tid) 1411 { 1412 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1413 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 1414 struct sk_buff *skb; 1415 struct ieee80211_hdr *hdr; 1416 struct sk_buff_head deferred_tx; 1417 u8 mac_queue; 1418 bool no_queue = false; /* Marks if there is a problem with the queue */ 1419 u8 ac; 1420 1421 lockdep_assert_held(&mvm->mutex); 1422 1423 skb = skb_peek(&tid_data->deferred_tx_frames); 1424 if (!skb) 1425 return; 1426 hdr = (void *)skb->data; 1427 1428 ac = iwl_mvm_tid_to_ac_queue(tid); 1429 mac_queue = IEEE80211_SKB_CB(skb)->hw_queue; 1430 1431 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE && 1432 iwl_mvm_sta_alloc_queue(mvm, sta, ac, tid, hdr)) { 1433 IWL_ERR(mvm, 1434 "Can't alloc TXQ for sta %d tid %d - dropping frame\n", 1435 mvmsta->sta_id, tid); 1436 1437 /* 1438 * Mark queue as problematic so later the deferred traffic is 1439 * freed, as we can do nothing with it 1440 */ 1441 no_queue = true; 1442 } 1443 1444 __skb_queue_head_init(&deferred_tx); 1445 1446 /* Disable bottom-halves when entering TX path */ 1447 local_bh_disable(); 1448 spin_lock(&mvmsta->lock); 1449 skb_queue_splice_init(&tid_data->deferred_tx_frames, &deferred_tx); 1450 mvmsta->deferred_traffic_tid_map &= ~BIT(tid); 1451 spin_unlock(&mvmsta->lock); 1452 1453 while ((skb = __skb_dequeue(&deferred_tx))) 1454 if (no_queue || iwl_mvm_tx_skb(mvm, skb, sta)) 1455 ieee80211_free_txskb(mvm->hw, skb); 1456 local_bh_enable(); 1457 1458 /* Wake queue */ 1459 iwl_mvm_start_mac_queues(mvm, BIT(mac_queue)); 1460 } 1461 1462 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1463 { 1464 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1465 add_stream_wk); 1466 struct ieee80211_sta *sta; 1467 struct iwl_mvm_sta *mvmsta; 1468 unsigned long deferred_tid_traffic; 1469 int sta_id, tid; 1470 1471 mutex_lock(&mvm->mutex); 1472 1473 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1474 1475 /* Go over all stations with deferred traffic */ 1476 for_each_set_bit(sta_id, mvm->sta_deferred_frames, 1477 IWL_MVM_STATION_COUNT) { 1478 clear_bit(sta_id, mvm->sta_deferred_frames); 1479 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1480 lockdep_is_held(&mvm->mutex)); 1481 if (IS_ERR_OR_NULL(sta)) 1482 continue; 1483 1484 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1485 deferred_tid_traffic = mvmsta->deferred_traffic_tid_map; 1486 1487 for_each_set_bit(tid, &deferred_tid_traffic, 1488 IWL_MAX_TID_COUNT + 1) 1489 iwl_mvm_tx_deferred_stream(mvm, sta, tid); 1490 } 1491 1492 mutex_unlock(&mvm->mutex); 1493 } 1494 1495 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1496 struct ieee80211_sta *sta, 1497 enum nl80211_iftype vif_type) 1498 { 1499 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1500 int queue; 1501 1502 /* queue reserving is disabled on new TX path */ 1503 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1504 return 0; 1505 1506 /* run the general cleanup/unsharing of queues */ 1507 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1508 1509 /* Make sure we have free resources for this STA */ 1510 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1511 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1512 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1513 IWL_MVM_QUEUE_FREE)) 1514 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1515 else 1516 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1517 IWL_MVM_DQA_MIN_DATA_QUEUE, 1518 IWL_MVM_DQA_MAX_DATA_QUEUE); 1519 if (queue < 0) { 1520 /* try again - this time kick out a queue if needed */ 1521 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1522 if (queue < 0) { 1523 IWL_ERR(mvm, "No available queues for new station\n"); 1524 return -ENOSPC; 1525 } 1526 } 1527 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1528 1529 mvmsta->reserved_queue = queue; 1530 1531 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1532 queue, mvmsta->sta_id); 1533 1534 return 0; 1535 } 1536 1537 /* 1538 * In DQA mode, after a HW restart the queues should be allocated as before, in 1539 * order to avoid race conditions when there are shared queues. This function 1540 * does the re-mapping and queue allocation. 1541 * 1542 * Note that re-enabling aggregations isn't done in this function. 1543 */ 1544 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1545 struct iwl_mvm_sta *mvm_sta) 1546 { 1547 unsigned int wdg_timeout = 1548 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1549 int i; 1550 struct iwl_trans_txq_scd_cfg cfg = { 1551 .sta_id = mvm_sta->sta_id, 1552 .frame_limit = IWL_FRAME_LIMIT, 1553 }; 1554 1555 /* Make sure reserved queue is still marked as such (if allocated) */ 1556 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1557 mvm->queue_info[mvm_sta->reserved_queue].status = 1558 IWL_MVM_QUEUE_RESERVED; 1559 1560 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1561 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1562 int txq_id = tid_data->txq_id; 1563 int ac; 1564 u8 mac_queue; 1565 1566 if (txq_id == IWL_MVM_INVALID_QUEUE) 1567 continue; 1568 1569 skb_queue_head_init(&tid_data->deferred_tx_frames); 1570 1571 ac = tid_to_mac80211_ac[i]; 1572 mac_queue = mvm_sta->vif->hw_queue[ac]; 1573 1574 if (iwl_mvm_has_new_tx_api(mvm)) { 1575 IWL_DEBUG_TX_QUEUES(mvm, 1576 "Re-mapping sta %d tid %d\n", 1577 mvm_sta->sta_id, i); 1578 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mac_queue, 1579 mvm_sta->sta_id, 1580 i, wdg_timeout); 1581 tid_data->txq_id = txq_id; 1582 1583 /* 1584 * Since we don't set the seq number after reset, and HW 1585 * sets it now, FW reset will cause the seq num to start 1586 * at 0 again, so driver will need to update it 1587 * internally as well, so it keeps in sync with real val 1588 */ 1589 tid_data->seq_number = 0; 1590 } else { 1591 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1592 1593 cfg.tid = i; 1594 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1595 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1596 txq_id == 1597 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1598 1599 IWL_DEBUG_TX_QUEUES(mvm, 1600 "Re-mapping sta %d tid %d to queue %d\n", 1601 mvm_sta->sta_id, i, txq_id); 1602 1603 iwl_mvm_enable_txq(mvm, txq_id, mac_queue, seq, &cfg, 1604 wdg_timeout); 1605 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1606 } 1607 } 1608 } 1609 1610 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1611 struct iwl_mvm_int_sta *sta, 1612 const u8 *addr, 1613 u16 mac_id, u16 color) 1614 { 1615 struct iwl_mvm_add_sta_cmd cmd; 1616 int ret; 1617 u32 status = ADD_STA_SUCCESS; 1618 1619 lockdep_assert_held(&mvm->mutex); 1620 1621 memset(&cmd, 0, sizeof(cmd)); 1622 cmd.sta_id = sta->sta_id; 1623 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1624 color)); 1625 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1626 cmd.station_type = sta->type; 1627 1628 if (!iwl_mvm_has_new_tx_api(mvm)) 1629 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1630 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1631 1632 if (addr) 1633 memcpy(cmd.addr, addr, ETH_ALEN); 1634 1635 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1636 iwl_mvm_add_sta_cmd_size(mvm), 1637 &cmd, &status); 1638 if (ret) 1639 return ret; 1640 1641 switch (status & IWL_ADD_STA_STATUS_MASK) { 1642 case ADD_STA_SUCCESS: 1643 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1644 return 0; 1645 default: 1646 ret = -EIO; 1647 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1648 status); 1649 break; 1650 } 1651 return ret; 1652 } 1653 1654 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1655 struct ieee80211_vif *vif, 1656 struct ieee80211_sta *sta) 1657 { 1658 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1659 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1660 struct iwl_mvm_rxq_dup_data *dup_data; 1661 int i, ret, sta_id; 1662 bool sta_update = false; 1663 unsigned int sta_flags = 0; 1664 1665 lockdep_assert_held(&mvm->mutex); 1666 1667 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1668 sta_id = iwl_mvm_find_free_sta_id(mvm, 1669 ieee80211_vif_type_p2p(vif)); 1670 else 1671 sta_id = mvm_sta->sta_id; 1672 1673 if (sta_id == IWL_MVM_INVALID_STA) 1674 return -ENOSPC; 1675 1676 spin_lock_init(&mvm_sta->lock); 1677 1678 /* if this is a HW restart re-alloc existing queues */ 1679 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1680 struct iwl_mvm_int_sta tmp_sta = { 1681 .sta_id = sta_id, 1682 .type = mvm_sta->sta_type, 1683 }; 1684 1685 /* 1686 * First add an empty station since allocating 1687 * a queue requires a valid station 1688 */ 1689 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1690 mvmvif->id, mvmvif->color); 1691 if (ret) 1692 goto err; 1693 1694 iwl_mvm_realloc_queues_after_restart(mvm, mvm_sta); 1695 sta_update = true; 1696 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1697 goto update_fw; 1698 } 1699 1700 mvm_sta->sta_id = sta_id; 1701 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1702 mvmvif->color); 1703 mvm_sta->vif = vif; 1704 if (!mvm->trans->cfg->gen2) 1705 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1706 else 1707 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1708 mvm_sta->tx_protection = 0; 1709 mvm_sta->tt_tx_protection = false; 1710 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1711 1712 /* HW restart, don't assume the memory has been zeroed */ 1713 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1714 mvm_sta->tfd_queue_msk = 0; 1715 1716 /* for HW restart - reset everything but the sequence number */ 1717 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1718 u16 seq = mvm_sta->tid_data[i].seq_number; 1719 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1720 mvm_sta->tid_data[i].seq_number = seq; 1721 1722 /* 1723 * Mark all queues for this STA as unallocated and defer TX 1724 * frames until the queue is allocated 1725 */ 1726 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1727 skb_queue_head_init(&mvm_sta->tid_data[i].deferred_tx_frames); 1728 } 1729 mvm_sta->deferred_traffic_tid_map = 0; 1730 mvm_sta->agg_tids = 0; 1731 1732 if (iwl_mvm_has_new_rx_api(mvm) && 1733 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1734 int q; 1735 1736 dup_data = kcalloc(mvm->trans->num_rx_queues, 1737 sizeof(*dup_data), GFP_KERNEL); 1738 if (!dup_data) 1739 return -ENOMEM; 1740 /* 1741 * Initialize all the last_seq values to 0xffff which can never 1742 * compare equal to the frame's seq_ctrl in the check in 1743 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1744 * number and fragmented packets don't reach that function. 1745 * 1746 * This thus allows receiving a packet with seqno 0 and the 1747 * retry bit set as the very first packet on a new TID. 1748 */ 1749 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1750 memset(dup_data[q].last_seq, 0xff, 1751 sizeof(dup_data[q].last_seq)); 1752 mvm_sta->dup_data = dup_data; 1753 } 1754 1755 if (!iwl_mvm_has_new_tx_api(mvm)) { 1756 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1757 ieee80211_vif_type_p2p(vif)); 1758 if (ret) 1759 goto err; 1760 } 1761 1762 /* 1763 * if rs is registered with mac80211, then "add station" will be handled 1764 * via the corresponding ops, otherwise need to notify rate scaling here 1765 */ 1766 if (iwl_mvm_has_tlc_offload(mvm)) 1767 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1768 1769 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1770 1771 update_fw: 1772 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1773 if (ret) 1774 goto err; 1775 1776 if (vif->type == NL80211_IFTYPE_STATION) { 1777 if (!sta->tdls) { 1778 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1779 mvmvif->ap_sta_id = sta_id; 1780 } else { 1781 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1782 } 1783 } 1784 1785 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1786 1787 return 0; 1788 1789 err: 1790 return ret; 1791 } 1792 1793 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1794 bool drain) 1795 { 1796 struct iwl_mvm_add_sta_cmd cmd = {}; 1797 int ret; 1798 u32 status; 1799 1800 lockdep_assert_held(&mvm->mutex); 1801 1802 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1803 cmd.sta_id = mvmsta->sta_id; 1804 cmd.add_modify = STA_MODE_MODIFY; 1805 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1806 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1807 1808 status = ADD_STA_SUCCESS; 1809 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1810 iwl_mvm_add_sta_cmd_size(mvm), 1811 &cmd, &status); 1812 if (ret) 1813 return ret; 1814 1815 switch (status & IWL_ADD_STA_STATUS_MASK) { 1816 case ADD_STA_SUCCESS: 1817 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1818 mvmsta->sta_id); 1819 break; 1820 default: 1821 ret = -EIO; 1822 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1823 mvmsta->sta_id); 1824 break; 1825 } 1826 1827 return ret; 1828 } 1829 1830 /* 1831 * Remove a station from the FW table. Before sending the command to remove 1832 * the station validate that the station is indeed known to the driver (sanity 1833 * only). 1834 */ 1835 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1836 { 1837 struct ieee80211_sta *sta; 1838 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1839 .sta_id = sta_id, 1840 }; 1841 int ret; 1842 1843 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1844 lockdep_is_held(&mvm->mutex)); 1845 1846 /* Note: internal stations are marked as error values */ 1847 if (!sta) { 1848 IWL_ERR(mvm, "Invalid station id\n"); 1849 return -EINVAL; 1850 } 1851 1852 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1853 sizeof(rm_sta_cmd), &rm_sta_cmd); 1854 if (ret) { 1855 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1856 return ret; 1857 } 1858 1859 return 0; 1860 } 1861 1862 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1863 struct ieee80211_vif *vif, 1864 struct iwl_mvm_sta *mvm_sta) 1865 { 1866 int ac; 1867 int i; 1868 1869 lockdep_assert_held(&mvm->mutex); 1870 1871 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1872 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1873 continue; 1874 1875 ac = iwl_mvm_tid_to_ac_queue(i); 1876 iwl_mvm_disable_txq(mvm, mvm_sta->tid_data[i].txq_id, 1877 vif->hw_queue[ac], i, 0); 1878 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1879 } 1880 } 1881 1882 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1883 struct iwl_mvm_sta *mvm_sta) 1884 { 1885 int i; 1886 1887 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1888 u16 txq_id; 1889 int ret; 1890 1891 spin_lock_bh(&mvm_sta->lock); 1892 txq_id = mvm_sta->tid_data[i].txq_id; 1893 spin_unlock_bh(&mvm_sta->lock); 1894 1895 if (txq_id == IWL_MVM_INVALID_QUEUE) 1896 continue; 1897 1898 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1899 if (ret) 1900 return ret; 1901 } 1902 1903 return 0; 1904 } 1905 1906 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1907 struct ieee80211_vif *vif, 1908 struct ieee80211_sta *sta) 1909 { 1910 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1911 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1912 u8 sta_id = mvm_sta->sta_id; 1913 int ret; 1914 1915 lockdep_assert_held(&mvm->mutex); 1916 1917 if (iwl_mvm_has_new_rx_api(mvm)) 1918 kfree(mvm_sta->dup_data); 1919 1920 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1921 if (ret) 1922 return ret; 1923 1924 /* flush its queues here since we are freeing mvm_sta */ 1925 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0); 1926 if (ret) 1927 return ret; 1928 if (iwl_mvm_has_new_tx_api(mvm)) { 1929 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1930 } else { 1931 u32 q_mask = mvm_sta->tfd_queue_msk; 1932 1933 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1934 q_mask); 1935 } 1936 if (ret) 1937 return ret; 1938 1939 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1940 1941 iwl_mvm_disable_sta_queues(mvm, vif, mvm_sta); 1942 1943 /* If there is a TXQ still marked as reserved - free it */ 1944 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1945 u8 reserved_txq = mvm_sta->reserved_queue; 1946 enum iwl_mvm_queue_status *status; 1947 1948 /* 1949 * If no traffic has gone through the reserved TXQ - it 1950 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1951 * should be manually marked as free again 1952 */ 1953 status = &mvm->queue_info[reserved_txq].status; 1954 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1955 (*status != IWL_MVM_QUEUE_FREE), 1956 "sta_id %d reserved txq %d status %d", 1957 sta_id, reserved_txq, *status)) 1958 return -EINVAL; 1959 1960 *status = IWL_MVM_QUEUE_FREE; 1961 } 1962 1963 if (vif->type == NL80211_IFTYPE_STATION && 1964 mvmvif->ap_sta_id == sta_id) { 1965 /* if associated - we can't remove the AP STA now */ 1966 if (vif->bss_conf.assoc) 1967 return ret; 1968 1969 /* unassoc - go ahead - remove the AP STA now */ 1970 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1971 1972 /* clear d0i3_ap_sta_id if no longer relevant */ 1973 if (mvm->d0i3_ap_sta_id == sta_id) 1974 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA; 1975 } 1976 1977 /* 1978 * This shouldn't happen - the TDLS channel switch should be canceled 1979 * before the STA is removed. 1980 */ 1981 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1982 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1983 cancel_delayed_work(&mvm->tdls_cs.dwork); 1984 } 1985 1986 /* 1987 * Make sure that the tx response code sees the station as -EBUSY and 1988 * calls the drain worker. 1989 */ 1990 spin_lock_bh(&mvm_sta->lock); 1991 spin_unlock_bh(&mvm_sta->lock); 1992 1993 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1994 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1995 1996 return ret; 1997 } 1998 1999 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 2000 struct ieee80211_vif *vif, 2001 u8 sta_id) 2002 { 2003 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 2004 2005 lockdep_assert_held(&mvm->mutex); 2006 2007 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 2008 return ret; 2009 } 2010 2011 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 2012 struct iwl_mvm_int_sta *sta, 2013 u32 qmask, enum nl80211_iftype iftype, 2014 enum iwl_sta_type type) 2015 { 2016 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 2017 sta->sta_id == IWL_MVM_INVALID_STA) { 2018 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2019 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2020 return -ENOSPC; 2021 } 2022 2023 sta->tfd_queue_msk = qmask; 2024 sta->type = type; 2025 2026 /* put a non-NULL value so iterating over the stations won't stop */ 2027 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2028 return 0; 2029 } 2030 2031 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2032 { 2033 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2034 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2035 sta->sta_id = IWL_MVM_INVALID_STA; 2036 } 2037 2038 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue, 2039 u8 sta_id, u8 fifo) 2040 { 2041 unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ? 2042 mvm->cfg->base_params->wd_timeout : 2043 IWL_WATCHDOG_DISABLED; 2044 2045 if (iwl_mvm_has_new_tx_api(mvm)) { 2046 int tvqm_queue = 2047 iwl_mvm_tvqm_enable_txq(mvm, *queue, sta_id, 2048 IWL_MAX_TID_COUNT, 2049 wdg_timeout); 2050 *queue = tvqm_queue; 2051 } else { 2052 struct iwl_trans_txq_scd_cfg cfg = { 2053 .fifo = fifo, 2054 .sta_id = sta_id, 2055 .tid = IWL_MAX_TID_COUNT, 2056 .aggregate = false, 2057 .frame_limit = IWL_FRAME_LIMIT, 2058 }; 2059 2060 iwl_mvm_enable_txq(mvm, *queue, *queue, 0, &cfg, wdg_timeout); 2061 } 2062 } 2063 2064 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm) 2065 { 2066 int ret; 2067 2068 lockdep_assert_held(&mvm->mutex); 2069 2070 /* Allocate aux station and assign to it the aux queue */ 2071 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2072 NL80211_IFTYPE_UNSPECIFIED, 2073 IWL_STA_AUX_ACTIVITY); 2074 if (ret) 2075 return ret; 2076 2077 /* Map Aux queue to fifo - needs to happen before adding Aux station */ 2078 if (!iwl_mvm_has_new_tx_api(mvm)) 2079 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, 2080 mvm->aux_sta.sta_id, 2081 IWL_MVM_TX_FIFO_MCAST); 2082 2083 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL, 2084 MAC_INDEX_AUX, 0); 2085 if (ret) { 2086 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2087 return ret; 2088 } 2089 2090 /* 2091 * For 22000 firmware and on we cannot add queue to a station unknown 2092 * to firmware so enable queue here - after the station was added 2093 */ 2094 if (iwl_mvm_has_new_tx_api(mvm)) 2095 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue, 2096 mvm->aux_sta.sta_id, 2097 IWL_MVM_TX_FIFO_MCAST); 2098 2099 return 0; 2100 } 2101 2102 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2103 { 2104 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2105 int ret; 2106 2107 lockdep_assert_held(&mvm->mutex); 2108 2109 /* Map snif queue to fifo - must happen before adding snif station */ 2110 if (!iwl_mvm_has_new_tx_api(mvm)) 2111 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, 2112 mvm->snif_sta.sta_id, 2113 IWL_MVM_TX_FIFO_BE); 2114 2115 ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr, 2116 mvmvif->id, 0); 2117 if (ret) 2118 return ret; 2119 2120 /* 2121 * For 22000 firmware and on we cannot add queue to a station unknown 2122 * to firmware so enable queue here - after the station was added 2123 */ 2124 if (iwl_mvm_has_new_tx_api(mvm)) 2125 iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue, 2126 mvm->snif_sta.sta_id, 2127 IWL_MVM_TX_FIFO_BE); 2128 2129 return 0; 2130 } 2131 2132 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2133 { 2134 int ret; 2135 2136 lockdep_assert_held(&mvm->mutex); 2137 2138 iwl_mvm_disable_txq(mvm, mvm->snif_queue, mvm->snif_queue, 2139 IWL_MAX_TID_COUNT, 0); 2140 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2141 if (ret) 2142 IWL_WARN(mvm, "Failed sending remove station\n"); 2143 2144 return ret; 2145 } 2146 2147 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2148 { 2149 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2150 } 2151 2152 void iwl_mvm_del_aux_sta(struct iwl_mvm *mvm) 2153 { 2154 lockdep_assert_held(&mvm->mutex); 2155 2156 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2157 } 2158 2159 /* 2160 * Send the add station command for the vif's broadcast station. 2161 * Assumes that the station was already allocated. 2162 * 2163 * @mvm: the mvm component 2164 * @vif: the interface to which the broadcast station is added 2165 * @bsta: the broadcast station to add. 2166 */ 2167 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2168 { 2169 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2170 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2171 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2172 const u8 *baddr = _baddr; 2173 int queue; 2174 int ret; 2175 unsigned int wdg_timeout = 2176 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2177 struct iwl_trans_txq_scd_cfg cfg = { 2178 .fifo = IWL_MVM_TX_FIFO_VO, 2179 .sta_id = mvmvif->bcast_sta.sta_id, 2180 .tid = IWL_MAX_TID_COUNT, 2181 .aggregate = false, 2182 .frame_limit = IWL_FRAME_LIMIT, 2183 }; 2184 2185 lockdep_assert_held(&mvm->mutex); 2186 2187 if (!iwl_mvm_has_new_tx_api(mvm)) { 2188 if (vif->type == NL80211_IFTYPE_AP || 2189 vif->type == NL80211_IFTYPE_ADHOC) 2190 queue = mvm->probe_queue; 2191 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2192 queue = mvm->p2p_dev_queue; 2193 else if (WARN(1, "Missing required TXQ for adding bcast STA\n")) 2194 return -EINVAL; 2195 2196 bsta->tfd_queue_msk |= BIT(queue); 2197 2198 iwl_mvm_enable_txq(mvm, queue, vif->hw_queue[0], 0, 2199 &cfg, wdg_timeout); 2200 } 2201 2202 if (vif->type == NL80211_IFTYPE_ADHOC) 2203 baddr = vif->bss_conf.bssid; 2204 2205 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2206 return -ENOSPC; 2207 2208 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2209 mvmvif->id, mvmvif->color); 2210 if (ret) 2211 return ret; 2212 2213 /* 2214 * For 22000 firmware and on we cannot add queue to a station unknown 2215 * to firmware so enable queue here - after the station was added 2216 */ 2217 if (iwl_mvm_has_new_tx_api(mvm)) { 2218 queue = iwl_mvm_tvqm_enable_txq(mvm, vif->hw_queue[0], 2219 bsta->sta_id, 2220 IWL_MAX_TID_COUNT, 2221 wdg_timeout); 2222 2223 if (vif->type == NL80211_IFTYPE_AP || 2224 vif->type == NL80211_IFTYPE_ADHOC) 2225 mvm->probe_queue = queue; 2226 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2227 mvm->p2p_dev_queue = queue; 2228 } 2229 2230 return 0; 2231 } 2232 2233 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2234 struct ieee80211_vif *vif) 2235 { 2236 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2237 int queue; 2238 2239 lockdep_assert_held(&mvm->mutex); 2240 2241 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true, 0); 2242 2243 switch (vif->type) { 2244 case NL80211_IFTYPE_AP: 2245 case NL80211_IFTYPE_ADHOC: 2246 queue = mvm->probe_queue; 2247 break; 2248 case NL80211_IFTYPE_P2P_DEVICE: 2249 queue = mvm->p2p_dev_queue; 2250 break; 2251 default: 2252 WARN(1, "Can't free bcast queue on vif type %d\n", 2253 vif->type); 2254 return; 2255 } 2256 2257 iwl_mvm_disable_txq(mvm, queue, vif->hw_queue[0], IWL_MAX_TID_COUNT, 0); 2258 if (iwl_mvm_has_new_tx_api(mvm)) 2259 return; 2260 2261 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2262 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2263 } 2264 2265 /* Send the FW a request to remove the station from it's internal data 2266 * structures, but DO NOT remove the entry from the local data structures. */ 2267 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2268 { 2269 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2270 int ret; 2271 2272 lockdep_assert_held(&mvm->mutex); 2273 2274 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2275 2276 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2277 if (ret) 2278 IWL_WARN(mvm, "Failed sending remove station\n"); 2279 return ret; 2280 } 2281 2282 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2283 { 2284 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2285 2286 lockdep_assert_held(&mvm->mutex); 2287 2288 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2289 ieee80211_vif_type_p2p(vif), 2290 IWL_STA_GENERAL_PURPOSE); 2291 } 2292 2293 /* Allocate a new station entry for the broadcast station to the given vif, 2294 * and send it to the FW. 2295 * Note that each P2P mac should have its own broadcast station. 2296 * 2297 * @mvm: the mvm component 2298 * @vif: the interface to which the broadcast station is added 2299 * @bsta: the broadcast station to add. */ 2300 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2301 { 2302 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2303 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2304 int ret; 2305 2306 lockdep_assert_held(&mvm->mutex); 2307 2308 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2309 if (ret) 2310 return ret; 2311 2312 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2313 2314 if (ret) 2315 iwl_mvm_dealloc_int_sta(mvm, bsta); 2316 2317 return ret; 2318 } 2319 2320 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2321 { 2322 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2323 2324 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2325 } 2326 2327 /* 2328 * Send the FW a request to remove the station from it's internal data 2329 * structures, and in addition remove it from the local data structure. 2330 */ 2331 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2332 { 2333 int ret; 2334 2335 lockdep_assert_held(&mvm->mutex); 2336 2337 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2338 2339 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2340 2341 return ret; 2342 } 2343 2344 /* 2345 * Allocate a new station entry for the multicast station to the given vif, 2346 * and send it to the FW. 2347 * Note that each AP/GO mac should have its own multicast station. 2348 * 2349 * @mvm: the mvm component 2350 * @vif: the interface to which the multicast station is added 2351 */ 2352 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2353 { 2354 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2355 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2356 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2357 const u8 *maddr = _maddr; 2358 struct iwl_trans_txq_scd_cfg cfg = { 2359 .fifo = IWL_MVM_TX_FIFO_MCAST, 2360 .sta_id = msta->sta_id, 2361 .tid = 0, 2362 .aggregate = false, 2363 .frame_limit = IWL_FRAME_LIMIT, 2364 }; 2365 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2366 int ret; 2367 2368 lockdep_assert_held(&mvm->mutex); 2369 2370 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2371 vif->type != NL80211_IFTYPE_ADHOC)) 2372 return -ENOTSUPP; 2373 2374 /* 2375 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2376 * invalid, so make sure we use the queue we want. 2377 * Note that this is done here as we want to avoid making DQA 2378 * changes in mac80211 layer. 2379 */ 2380 if (vif->type == NL80211_IFTYPE_ADHOC) { 2381 vif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2382 mvmvif->cab_queue = vif->cab_queue; 2383 } 2384 2385 /* 2386 * While in previous FWs we had to exclude cab queue from TFD queue 2387 * mask, now it is needed as any other queue. 2388 */ 2389 if (!iwl_mvm_has_new_tx_api(mvm) && 2390 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2391 iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2392 &cfg, timeout); 2393 msta->tfd_queue_msk |= BIT(vif->cab_queue); 2394 } 2395 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2396 mvmvif->id, mvmvif->color); 2397 if (ret) { 2398 iwl_mvm_dealloc_int_sta(mvm, msta); 2399 return ret; 2400 } 2401 2402 /* 2403 * Enable cab queue after the ADD_STA command is sent. 2404 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2405 * command with unknown station id, and for FW that doesn't support 2406 * station API since the cab queue is not included in the 2407 * tfd_queue_mask. 2408 */ 2409 if (iwl_mvm_has_new_tx_api(mvm)) { 2410 int queue = iwl_mvm_tvqm_enable_txq(mvm, vif->cab_queue, 2411 msta->sta_id, 2412 0, 2413 timeout); 2414 mvmvif->cab_queue = queue; 2415 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2416 IWL_UCODE_TLV_API_STA_TYPE)) 2417 iwl_mvm_enable_txq(mvm, vif->cab_queue, vif->cab_queue, 0, 2418 &cfg, timeout); 2419 2420 if (mvmvif->ap_wep_key) { 2421 u8 key_offset = iwl_mvm_set_fw_key_idx(mvm); 2422 2423 if (key_offset == STA_KEY_IDX_INVALID) 2424 return -ENOSPC; 2425 2426 ret = iwl_mvm_send_sta_key(mvm, mvmvif->mcast_sta.sta_id, 2427 mvmvif->ap_wep_key, 1, 0, NULL, 0, 2428 key_offset, 0); 2429 if (ret) 2430 return ret; 2431 } 2432 2433 return 0; 2434 } 2435 2436 /* 2437 * Send the FW a request to remove the station from it's internal data 2438 * structures, and in addition remove it from the local data structure. 2439 */ 2440 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2441 { 2442 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2443 int ret; 2444 2445 lockdep_assert_held(&mvm->mutex); 2446 2447 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true, 0); 2448 2449 iwl_mvm_disable_txq(mvm, mvmvif->cab_queue, vif->cab_queue, 2450 0, 0); 2451 2452 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2453 if (ret) 2454 IWL_WARN(mvm, "Failed sending remove station\n"); 2455 2456 return ret; 2457 } 2458 2459 #define IWL_MAX_RX_BA_SESSIONS 16 2460 2461 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2462 { 2463 struct iwl_mvm_delba_notif notif = { 2464 .metadata.type = IWL_MVM_RXQ_NOTIF_DEL_BA, 2465 .metadata.sync = 1, 2466 .delba.baid = baid, 2467 }; 2468 iwl_mvm_sync_rx_queues_internal(mvm, (void *)¬if, sizeof(notif)); 2469 }; 2470 2471 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2472 struct iwl_mvm_baid_data *data) 2473 { 2474 int i; 2475 2476 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2477 2478 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2479 int j; 2480 struct iwl_mvm_reorder_buffer *reorder_buf = 2481 &data->reorder_buf[i]; 2482 struct iwl_mvm_reorder_buf_entry *entries = 2483 &data->entries[i * data->entries_per_queue]; 2484 2485 spin_lock_bh(&reorder_buf->lock); 2486 if (likely(!reorder_buf->num_stored)) { 2487 spin_unlock_bh(&reorder_buf->lock); 2488 continue; 2489 } 2490 2491 /* 2492 * This shouldn't happen in regular DELBA since the internal 2493 * delBA notification should trigger a release of all frames in 2494 * the reorder buffer. 2495 */ 2496 WARN_ON(1); 2497 2498 for (j = 0; j < reorder_buf->buf_size; j++) 2499 __skb_queue_purge(&entries[j].e.frames); 2500 /* 2501 * Prevent timer re-arm. This prevents a very far fetched case 2502 * where we timed out on the notification. There may be prior 2503 * RX frames pending in the RX queue before the notification 2504 * that might get processed between now and the actual deletion 2505 * and we would re-arm the timer although we are deleting the 2506 * reorder buffer. 2507 */ 2508 reorder_buf->removed = true; 2509 spin_unlock_bh(&reorder_buf->lock); 2510 del_timer_sync(&reorder_buf->reorder_timer); 2511 } 2512 } 2513 2514 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2515 struct iwl_mvm_baid_data *data, 2516 u16 ssn, u16 buf_size) 2517 { 2518 int i; 2519 2520 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2521 struct iwl_mvm_reorder_buffer *reorder_buf = 2522 &data->reorder_buf[i]; 2523 struct iwl_mvm_reorder_buf_entry *entries = 2524 &data->entries[i * data->entries_per_queue]; 2525 int j; 2526 2527 reorder_buf->num_stored = 0; 2528 reorder_buf->head_sn = ssn; 2529 reorder_buf->buf_size = buf_size; 2530 /* rx reorder timer */ 2531 timer_setup(&reorder_buf->reorder_timer, 2532 iwl_mvm_reorder_timer_expired, 0); 2533 spin_lock_init(&reorder_buf->lock); 2534 reorder_buf->mvm = mvm; 2535 reorder_buf->queue = i; 2536 reorder_buf->valid = false; 2537 for (j = 0; j < reorder_buf->buf_size; j++) 2538 __skb_queue_head_init(&entries[j].e.frames); 2539 } 2540 } 2541 2542 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2543 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2544 { 2545 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2546 struct iwl_mvm_add_sta_cmd cmd = {}; 2547 struct iwl_mvm_baid_data *baid_data = NULL; 2548 int ret; 2549 u32 status; 2550 2551 lockdep_assert_held(&mvm->mutex); 2552 2553 if (start && mvm->rx_ba_sessions >= IWL_MAX_RX_BA_SESSIONS) { 2554 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2555 return -ENOSPC; 2556 } 2557 2558 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2559 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2560 2561 /* sparse doesn't like the __align() so don't check */ 2562 #ifndef __CHECKER__ 2563 /* 2564 * The division below will be OK if either the cache line size 2565 * can be divided by the entry size (ALIGN will round up) or if 2566 * if the entry size can be divided by the cache line size, in 2567 * which case the ALIGN() will do nothing. 2568 */ 2569 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2570 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2571 #endif 2572 2573 /* 2574 * Upward align the reorder buffer size to fill an entire cache 2575 * line for each queue, to avoid sharing cache lines between 2576 * different queues. 2577 */ 2578 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2579 2580 /* 2581 * Allocate here so if allocation fails we can bail out early 2582 * before starting the BA session in the firmware 2583 */ 2584 baid_data = kzalloc(sizeof(*baid_data) + 2585 mvm->trans->num_rx_queues * 2586 reorder_buf_size, 2587 GFP_KERNEL); 2588 if (!baid_data) 2589 return -ENOMEM; 2590 2591 /* 2592 * This division is why we need the above BUILD_BUG_ON(), 2593 * if that doesn't hold then this will not be right. 2594 */ 2595 baid_data->entries_per_queue = 2596 reorder_buf_size / sizeof(baid_data->entries[0]); 2597 } 2598 2599 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2600 cmd.sta_id = mvm_sta->sta_id; 2601 cmd.add_modify = STA_MODE_MODIFY; 2602 if (start) { 2603 cmd.add_immediate_ba_tid = (u8) tid; 2604 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2605 cmd.rx_ba_window = cpu_to_le16(buf_size); 2606 } else { 2607 cmd.remove_immediate_ba_tid = (u8) tid; 2608 } 2609 cmd.modify_mask = start ? STA_MODIFY_ADD_BA_TID : 2610 STA_MODIFY_REMOVE_BA_TID; 2611 2612 status = ADD_STA_SUCCESS; 2613 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2614 iwl_mvm_add_sta_cmd_size(mvm), 2615 &cmd, &status); 2616 if (ret) 2617 goto out_free; 2618 2619 switch (status & IWL_ADD_STA_STATUS_MASK) { 2620 case ADD_STA_SUCCESS: 2621 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2622 start ? "start" : "stopp"); 2623 break; 2624 case ADD_STA_IMMEDIATE_BA_FAILURE: 2625 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2626 ret = -ENOSPC; 2627 break; 2628 default: 2629 ret = -EIO; 2630 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2631 start ? "start" : "stopp", status); 2632 break; 2633 } 2634 2635 if (ret) 2636 goto out_free; 2637 2638 if (start) { 2639 u8 baid; 2640 2641 mvm->rx_ba_sessions++; 2642 2643 if (!iwl_mvm_has_new_rx_api(mvm)) 2644 return 0; 2645 2646 if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) { 2647 ret = -EINVAL; 2648 goto out_free; 2649 } 2650 baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >> 2651 IWL_ADD_STA_BAID_SHIFT); 2652 baid_data->baid = baid; 2653 baid_data->timeout = timeout; 2654 baid_data->last_rx = jiffies; 2655 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2656 timer_setup(&baid_data->session_timer, 2657 iwl_mvm_rx_agg_session_expired, 0); 2658 baid_data->mvm = mvm; 2659 baid_data->tid = tid; 2660 baid_data->sta_id = mvm_sta->sta_id; 2661 2662 mvm_sta->tid_to_baid[tid] = baid; 2663 if (timeout) 2664 mod_timer(&baid_data->session_timer, 2665 TU_TO_EXP_TIME(timeout * 2)); 2666 2667 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2668 /* 2669 * protect the BA data with RCU to cover a case where our 2670 * internal RX sync mechanism will timeout (not that it's 2671 * supposed to happen) and we will free the session data while 2672 * RX is being processed in parallel 2673 */ 2674 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2675 mvm_sta->sta_id, tid, baid); 2676 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2677 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2678 } else { 2679 u8 baid = mvm_sta->tid_to_baid[tid]; 2680 2681 if (mvm->rx_ba_sessions > 0) 2682 /* check that restart flow didn't zero the counter */ 2683 mvm->rx_ba_sessions--; 2684 if (!iwl_mvm_has_new_rx_api(mvm)) 2685 return 0; 2686 2687 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2688 return -EINVAL; 2689 2690 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2691 if (WARN_ON(!baid_data)) 2692 return -EINVAL; 2693 2694 /* synchronize all rx queues so we can safely delete */ 2695 iwl_mvm_free_reorder(mvm, baid_data); 2696 del_timer_sync(&baid_data->session_timer); 2697 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2698 kfree_rcu(baid_data, rcu_head); 2699 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2700 } 2701 return 0; 2702 2703 out_free: 2704 kfree(baid_data); 2705 return ret; 2706 } 2707 2708 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2709 int tid, u8 queue, bool start) 2710 { 2711 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2712 struct iwl_mvm_add_sta_cmd cmd = {}; 2713 int ret; 2714 u32 status; 2715 2716 lockdep_assert_held(&mvm->mutex); 2717 2718 if (start) { 2719 mvm_sta->tfd_queue_msk |= BIT(queue); 2720 mvm_sta->tid_disable_agg &= ~BIT(tid); 2721 } else { 2722 /* In DQA-mode the queue isn't removed on agg termination */ 2723 mvm_sta->tid_disable_agg |= BIT(tid); 2724 } 2725 2726 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2727 cmd.sta_id = mvm_sta->sta_id; 2728 cmd.add_modify = STA_MODE_MODIFY; 2729 if (!iwl_mvm_has_new_tx_api(mvm)) 2730 cmd.modify_mask = STA_MODIFY_QUEUES; 2731 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2732 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2733 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2734 2735 status = ADD_STA_SUCCESS; 2736 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2737 iwl_mvm_add_sta_cmd_size(mvm), 2738 &cmd, &status); 2739 if (ret) 2740 return ret; 2741 2742 switch (status & IWL_ADD_STA_STATUS_MASK) { 2743 case ADD_STA_SUCCESS: 2744 break; 2745 default: 2746 ret = -EIO; 2747 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2748 start ? "start" : "stopp", status); 2749 break; 2750 } 2751 2752 return ret; 2753 } 2754 2755 const u8 tid_to_mac80211_ac[] = { 2756 IEEE80211_AC_BE, 2757 IEEE80211_AC_BK, 2758 IEEE80211_AC_BK, 2759 IEEE80211_AC_BE, 2760 IEEE80211_AC_VI, 2761 IEEE80211_AC_VI, 2762 IEEE80211_AC_VO, 2763 IEEE80211_AC_VO, 2764 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2765 }; 2766 2767 static const u8 tid_to_ucode_ac[] = { 2768 AC_BE, 2769 AC_BK, 2770 AC_BK, 2771 AC_BE, 2772 AC_VI, 2773 AC_VI, 2774 AC_VO, 2775 AC_VO, 2776 }; 2777 2778 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2779 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2780 { 2781 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2782 struct iwl_mvm_tid_data *tid_data; 2783 u16 normalized_ssn; 2784 int txq_id; 2785 int ret; 2786 2787 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2788 return -EINVAL; 2789 2790 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2791 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2792 IWL_ERR(mvm, 2793 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2794 mvmsta->tid_data[tid].state); 2795 return -ENXIO; 2796 } 2797 2798 lockdep_assert_held(&mvm->mutex); 2799 2800 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2801 iwl_mvm_has_new_tx_api(mvm)) { 2802 u8 ac = tid_to_mac80211_ac[tid]; 2803 2804 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2805 if (ret) 2806 return ret; 2807 } 2808 2809 spin_lock_bh(&mvmsta->lock); 2810 2811 /* possible race condition - we entered D0i3 while starting agg */ 2812 if (test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)) { 2813 spin_unlock_bh(&mvmsta->lock); 2814 IWL_ERR(mvm, "Entered D0i3 while starting Tx agg\n"); 2815 return -EIO; 2816 } 2817 2818 /* 2819 * Note the possible cases: 2820 * 1. An enabled TXQ - TXQ needs to become agg'ed 2821 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2822 * it as reserved 2823 */ 2824 txq_id = mvmsta->tid_data[tid].txq_id; 2825 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2826 txq_id = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2827 IWL_MVM_DQA_MIN_DATA_QUEUE, 2828 IWL_MVM_DQA_MAX_DATA_QUEUE); 2829 if (txq_id < 0) { 2830 ret = txq_id; 2831 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2832 goto out; 2833 } 2834 2835 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2836 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2837 } else if (unlikely(mvm->queue_info[txq_id].status == 2838 IWL_MVM_QUEUE_SHARED)) { 2839 ret = -ENXIO; 2840 IWL_DEBUG_TX_QUEUES(mvm, 2841 "Can't start tid %d agg on shared queue!\n", 2842 tid); 2843 goto out; 2844 } 2845 2846 IWL_DEBUG_TX_QUEUES(mvm, 2847 "AGG for tid %d will be on queue #%d\n", 2848 tid, txq_id); 2849 2850 tid_data = &mvmsta->tid_data[tid]; 2851 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2852 tid_data->txq_id = txq_id; 2853 *ssn = tid_data->ssn; 2854 2855 IWL_DEBUG_TX_QUEUES(mvm, 2856 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2857 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2858 tid_data->next_reclaimed); 2859 2860 /* 2861 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 2862 * to align the wrap around of ssn so we compare relevant values. 2863 */ 2864 normalized_ssn = tid_data->ssn; 2865 if (mvm->trans->cfg->gen2) 2866 normalized_ssn &= 0xff; 2867 2868 if (normalized_ssn == tid_data->next_reclaimed) { 2869 tid_data->state = IWL_AGG_STARTING; 2870 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 2871 } else { 2872 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 2873 } 2874 2875 ret = 0; 2876 2877 out: 2878 spin_unlock_bh(&mvmsta->lock); 2879 2880 return ret; 2881 } 2882 2883 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2884 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 2885 bool amsdu) 2886 { 2887 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2888 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2889 unsigned int wdg_timeout = 2890 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 2891 int queue, ret; 2892 bool alloc_queue = true; 2893 enum iwl_mvm_queue_status queue_status; 2894 u16 ssn; 2895 2896 struct iwl_trans_txq_scd_cfg cfg = { 2897 .sta_id = mvmsta->sta_id, 2898 .tid = tid, 2899 .frame_limit = buf_size, 2900 .aggregate = true, 2901 }; 2902 2903 /* 2904 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 2905 * manager, so this function should never be called in this case. 2906 */ 2907 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 2908 return -EINVAL; 2909 2910 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 2911 != IWL_MAX_TID_COUNT); 2912 2913 spin_lock_bh(&mvmsta->lock); 2914 ssn = tid_data->ssn; 2915 queue = tid_data->txq_id; 2916 tid_data->state = IWL_AGG_ON; 2917 mvmsta->agg_tids |= BIT(tid); 2918 tid_data->ssn = 0xffff; 2919 tid_data->amsdu_in_ampdu_allowed = amsdu; 2920 spin_unlock_bh(&mvmsta->lock); 2921 2922 if (iwl_mvm_has_new_tx_api(mvm)) { 2923 /* 2924 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 2925 * would have failed, so if we are here there is no need to 2926 * allocate a queue. 2927 * However, if aggregation size is different than the default 2928 * size, the scheduler should be reconfigured. 2929 * We cannot do this with the new TX API, so return unsupported 2930 * for now, until it will be offloaded to firmware.. 2931 * Note that if SCD default value changes - this condition 2932 * should be updated as well. 2933 */ 2934 if (buf_size < IWL_FRAME_LIMIT) 2935 return -ENOTSUPP; 2936 2937 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2938 if (ret) 2939 return -EIO; 2940 goto out; 2941 } 2942 2943 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 2944 2945 queue_status = mvm->queue_info[queue].status; 2946 2947 /* Maybe there is no need to even alloc a queue... */ 2948 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 2949 alloc_queue = false; 2950 2951 /* 2952 * Only reconfig the SCD for the queue if the window size has 2953 * changed from current (become smaller) 2954 */ 2955 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 2956 /* 2957 * If reconfiguring an existing queue, it first must be 2958 * drained 2959 */ 2960 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 2961 BIT(queue)); 2962 if (ret) { 2963 IWL_ERR(mvm, 2964 "Error draining queue before reconfig\n"); 2965 return ret; 2966 } 2967 2968 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 2969 mvmsta->sta_id, tid, 2970 buf_size, ssn); 2971 if (ret) { 2972 IWL_ERR(mvm, 2973 "Error reconfiguring TXQ #%d\n", queue); 2974 return ret; 2975 } 2976 } 2977 2978 if (alloc_queue) 2979 iwl_mvm_enable_txq(mvm, queue, 2980 vif->hw_queue[tid_to_mac80211_ac[tid]], ssn, 2981 &cfg, wdg_timeout); 2982 2983 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 2984 if (queue_status != IWL_MVM_QUEUE_SHARED) { 2985 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 2986 if (ret) 2987 return -EIO; 2988 } 2989 2990 /* No need to mark as reserved */ 2991 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 2992 2993 out: 2994 /* 2995 * Even though in theory the peer could have different 2996 * aggregation reorder buffer sizes for different sessions, 2997 * our ucode doesn't allow for that and has a global limit 2998 * for each station. Therefore, use the minimum of all the 2999 * aggregation sessions and our default value. 3000 */ 3001 mvmsta->max_agg_bufsize = 3002 min(mvmsta->max_agg_bufsize, buf_size); 3003 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3004 3005 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3006 sta->addr, tid); 3007 3008 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false); 3009 } 3010 3011 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3012 struct iwl_mvm_sta *mvmsta, 3013 struct iwl_mvm_tid_data *tid_data) 3014 { 3015 u16 txq_id = tid_data->txq_id; 3016 3017 lockdep_assert_held(&mvm->mutex); 3018 3019 if (iwl_mvm_has_new_tx_api(mvm)) 3020 return; 3021 3022 /* 3023 * The TXQ is marked as reserved only if no traffic came through yet 3024 * This means no traffic has been sent on this TID (agg'd or not), so 3025 * we no longer have use for the queue. Since it hasn't even been 3026 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3027 * free. 3028 */ 3029 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3030 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3031 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3032 } 3033 } 3034 3035 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3036 struct ieee80211_sta *sta, u16 tid) 3037 { 3038 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3039 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3040 u16 txq_id; 3041 int err; 3042 3043 /* 3044 * If mac80211 is cleaning its state, then say that we finished since 3045 * our state has been cleared anyway. 3046 */ 3047 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3048 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3049 return 0; 3050 } 3051 3052 spin_lock_bh(&mvmsta->lock); 3053 3054 txq_id = tid_data->txq_id; 3055 3056 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3057 mvmsta->sta_id, tid, txq_id, tid_data->state); 3058 3059 mvmsta->agg_tids &= ~BIT(tid); 3060 3061 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3062 3063 switch (tid_data->state) { 3064 case IWL_AGG_ON: 3065 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3066 3067 IWL_DEBUG_TX_QUEUES(mvm, 3068 "ssn = %d, next_recl = %d\n", 3069 tid_data->ssn, tid_data->next_reclaimed); 3070 3071 tid_data->ssn = 0xffff; 3072 tid_data->state = IWL_AGG_OFF; 3073 spin_unlock_bh(&mvmsta->lock); 3074 3075 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3076 3077 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3078 return 0; 3079 case IWL_AGG_STARTING: 3080 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3081 /* 3082 * The agg session has been stopped before it was set up. This 3083 * can happen when the AddBA timer times out for example. 3084 */ 3085 3086 /* No barriers since we are under mutex */ 3087 lockdep_assert_held(&mvm->mutex); 3088 3089 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3090 tid_data->state = IWL_AGG_OFF; 3091 err = 0; 3092 break; 3093 default: 3094 IWL_ERR(mvm, 3095 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3096 mvmsta->sta_id, tid, tid_data->state); 3097 IWL_ERR(mvm, 3098 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3099 err = -EINVAL; 3100 } 3101 3102 spin_unlock_bh(&mvmsta->lock); 3103 3104 return err; 3105 } 3106 3107 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3108 struct ieee80211_sta *sta, u16 tid) 3109 { 3110 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3111 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3112 u16 txq_id; 3113 enum iwl_mvm_agg_state old_state; 3114 3115 /* 3116 * First set the agg state to OFF to avoid calling 3117 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3118 */ 3119 spin_lock_bh(&mvmsta->lock); 3120 txq_id = tid_data->txq_id; 3121 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3122 mvmsta->sta_id, tid, txq_id, tid_data->state); 3123 old_state = tid_data->state; 3124 tid_data->state = IWL_AGG_OFF; 3125 mvmsta->agg_tids &= ~BIT(tid); 3126 spin_unlock_bh(&mvmsta->lock); 3127 3128 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3129 3130 if (old_state >= IWL_AGG_ON) { 3131 iwl_mvm_drain_sta(mvm, mvmsta, true); 3132 3133 if (iwl_mvm_has_new_tx_api(mvm)) { 3134 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3135 BIT(tid), 0)) 3136 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3137 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3138 } else { 3139 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id), 0)) 3140 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3141 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3142 } 3143 3144 iwl_mvm_drain_sta(mvm, mvmsta, false); 3145 3146 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3147 } 3148 3149 return 0; 3150 } 3151 3152 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3153 { 3154 int i, max = -1, max_offs = -1; 3155 3156 lockdep_assert_held(&mvm->mutex); 3157 3158 /* Pick the unused key offset with the highest 'deleted' 3159 * counter. Every time a key is deleted, all the counters 3160 * are incremented and the one that was just deleted is 3161 * reset to zero. Thus, the highest counter is the one 3162 * that was deleted longest ago. Pick that one. 3163 */ 3164 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3165 if (test_bit(i, mvm->fw_key_table)) 3166 continue; 3167 if (mvm->fw_key_deleted[i] > max) { 3168 max = mvm->fw_key_deleted[i]; 3169 max_offs = i; 3170 } 3171 } 3172 3173 if (max_offs < 0) 3174 return STA_KEY_IDX_INVALID; 3175 3176 return max_offs; 3177 } 3178 3179 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3180 struct ieee80211_vif *vif, 3181 struct ieee80211_sta *sta) 3182 { 3183 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3184 3185 if (sta) 3186 return iwl_mvm_sta_from_mac80211(sta); 3187 3188 /* 3189 * The device expects GTKs for station interfaces to be 3190 * installed as GTKs for the AP station. If we have no 3191 * station ID, then use AP's station ID. 3192 */ 3193 if (vif->type == NL80211_IFTYPE_STATION && 3194 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3195 u8 sta_id = mvmvif->ap_sta_id; 3196 3197 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3198 lockdep_is_held(&mvm->mutex)); 3199 3200 /* 3201 * It is possible that the 'sta' parameter is NULL, 3202 * for example when a GTK is removed - the sta_id will then 3203 * be the AP ID, and no station was passed by mac80211. 3204 */ 3205 if (IS_ERR_OR_NULL(sta)) 3206 return NULL; 3207 3208 return iwl_mvm_sta_from_mac80211(sta); 3209 } 3210 3211 return NULL; 3212 } 3213 3214 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3215 u32 sta_id, 3216 struct ieee80211_key_conf *key, bool mcast, 3217 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3218 u8 key_offset, bool mfp) 3219 { 3220 union { 3221 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3222 struct iwl_mvm_add_sta_key_cmd cmd; 3223 } u = {}; 3224 __le16 key_flags; 3225 int ret; 3226 u32 status; 3227 u16 keyidx; 3228 u64 pn = 0; 3229 int i, size; 3230 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3231 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3232 3233 if (sta_id == IWL_MVM_INVALID_STA) 3234 return -EINVAL; 3235 3236 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3237 STA_KEY_FLG_KEYID_MSK; 3238 key_flags = cpu_to_le16(keyidx); 3239 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3240 3241 switch (key->cipher) { 3242 case WLAN_CIPHER_SUITE_TKIP: 3243 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3244 if (new_api) { 3245 memcpy((void *)&u.cmd.tx_mic_key, 3246 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3247 IWL_MIC_KEY_SIZE); 3248 3249 memcpy((void *)&u.cmd.rx_mic_key, 3250 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3251 IWL_MIC_KEY_SIZE); 3252 pn = atomic64_read(&key->tx_pn); 3253 3254 } else { 3255 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3256 for (i = 0; i < 5; i++) 3257 u.cmd_v1.tkip_rx_ttak[i] = 3258 cpu_to_le16(tkip_p1k[i]); 3259 } 3260 memcpy(u.cmd.common.key, key->key, key->keylen); 3261 break; 3262 case WLAN_CIPHER_SUITE_CCMP: 3263 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3264 memcpy(u.cmd.common.key, key->key, key->keylen); 3265 if (new_api) 3266 pn = atomic64_read(&key->tx_pn); 3267 break; 3268 case WLAN_CIPHER_SUITE_WEP104: 3269 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3270 /* fall through */ 3271 case WLAN_CIPHER_SUITE_WEP40: 3272 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3273 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3274 break; 3275 case WLAN_CIPHER_SUITE_GCMP_256: 3276 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3277 /* fall through */ 3278 case WLAN_CIPHER_SUITE_GCMP: 3279 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3280 memcpy(u.cmd.common.key, key->key, key->keylen); 3281 if (new_api) 3282 pn = atomic64_read(&key->tx_pn); 3283 break; 3284 default: 3285 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3286 memcpy(u.cmd.common.key, key->key, key->keylen); 3287 } 3288 3289 if (mcast) 3290 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3291 if (mfp) 3292 key_flags |= cpu_to_le16(STA_KEY_MFP); 3293 3294 u.cmd.common.key_offset = key_offset; 3295 u.cmd.common.key_flags = key_flags; 3296 u.cmd.common.sta_id = sta_id; 3297 3298 if (new_api) { 3299 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3300 size = sizeof(u.cmd); 3301 } else { 3302 size = sizeof(u.cmd_v1); 3303 } 3304 3305 status = ADD_STA_SUCCESS; 3306 if (cmd_flags & CMD_ASYNC) 3307 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3308 &u.cmd); 3309 else 3310 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3311 &u.cmd, &status); 3312 3313 switch (status) { 3314 case ADD_STA_SUCCESS: 3315 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3316 break; 3317 default: 3318 ret = -EIO; 3319 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3320 break; 3321 } 3322 3323 return ret; 3324 } 3325 3326 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3327 struct ieee80211_key_conf *keyconf, 3328 u8 sta_id, bool remove_key) 3329 { 3330 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3331 3332 /* verify the key details match the required command's expectations */ 3333 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3334 (keyconf->keyidx != 4 && keyconf->keyidx != 5) || 3335 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3336 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3337 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3338 return -EINVAL; 3339 3340 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3341 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3342 return -EINVAL; 3343 3344 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3345 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3346 3347 if (remove_key) { 3348 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3349 } else { 3350 struct ieee80211_key_seq seq; 3351 const u8 *pn; 3352 3353 switch (keyconf->cipher) { 3354 case WLAN_CIPHER_SUITE_AES_CMAC: 3355 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3356 break; 3357 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3358 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3359 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3360 break; 3361 default: 3362 return -EINVAL; 3363 } 3364 3365 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3366 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3367 igtk_cmd.ctrl_flags |= 3368 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3369 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3370 pn = seq.aes_cmac.pn; 3371 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3372 ((u64) pn[4] << 8) | 3373 ((u64) pn[3] << 16) | 3374 ((u64) pn[2] << 24) | 3375 ((u64) pn[1] << 32) | 3376 ((u64) pn[0] << 40)); 3377 } 3378 3379 IWL_DEBUG_INFO(mvm, "%s igtk for sta %u\n", 3380 remove_key ? "removing" : "installing", 3381 igtk_cmd.sta_id); 3382 3383 if (!iwl_mvm_has_new_rx_api(mvm)) { 3384 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3385 .ctrl_flags = igtk_cmd.ctrl_flags, 3386 .key_id = igtk_cmd.key_id, 3387 .sta_id = igtk_cmd.sta_id, 3388 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3389 }; 3390 3391 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3392 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3393 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3394 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3395 } 3396 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3397 sizeof(igtk_cmd), &igtk_cmd); 3398 } 3399 3400 3401 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3402 struct ieee80211_vif *vif, 3403 struct ieee80211_sta *sta) 3404 { 3405 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3406 3407 if (sta) 3408 return sta->addr; 3409 3410 if (vif->type == NL80211_IFTYPE_STATION && 3411 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3412 u8 sta_id = mvmvif->ap_sta_id; 3413 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3414 lockdep_is_held(&mvm->mutex)); 3415 return sta->addr; 3416 } 3417 3418 3419 return NULL; 3420 } 3421 3422 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3423 struct ieee80211_vif *vif, 3424 struct ieee80211_sta *sta, 3425 struct ieee80211_key_conf *keyconf, 3426 u8 key_offset, 3427 bool mcast) 3428 { 3429 int ret; 3430 const u8 *addr; 3431 struct ieee80211_key_seq seq; 3432 u16 p1k[5]; 3433 u32 sta_id; 3434 bool mfp = false; 3435 3436 if (sta) { 3437 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3438 3439 sta_id = mvm_sta->sta_id; 3440 mfp = sta->mfp; 3441 } else if (vif->type == NL80211_IFTYPE_AP && 3442 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3443 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3444 3445 sta_id = mvmvif->mcast_sta.sta_id; 3446 } else { 3447 IWL_ERR(mvm, "Failed to find station id\n"); 3448 return -EINVAL; 3449 } 3450 3451 switch (keyconf->cipher) { 3452 case WLAN_CIPHER_SUITE_TKIP: 3453 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3454 /* get phase 1 key from mac80211 */ 3455 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3456 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3457 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3458 seq.tkip.iv32, p1k, 0, key_offset, 3459 mfp); 3460 break; 3461 case WLAN_CIPHER_SUITE_CCMP: 3462 case WLAN_CIPHER_SUITE_WEP40: 3463 case WLAN_CIPHER_SUITE_WEP104: 3464 case WLAN_CIPHER_SUITE_GCMP: 3465 case WLAN_CIPHER_SUITE_GCMP_256: 3466 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3467 0, NULL, 0, key_offset, mfp); 3468 break; 3469 default: 3470 ret = iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3471 0, NULL, 0, key_offset, mfp); 3472 } 3473 3474 return ret; 3475 } 3476 3477 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 3478 struct ieee80211_key_conf *keyconf, 3479 bool mcast) 3480 { 3481 union { 3482 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3483 struct iwl_mvm_add_sta_key_cmd cmd; 3484 } u = {}; 3485 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3486 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3487 __le16 key_flags; 3488 int ret, size; 3489 u32 status; 3490 3491 /* This is a valid situation for GTK removal */ 3492 if (sta_id == IWL_MVM_INVALID_STA) 3493 return 0; 3494 3495 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 3496 STA_KEY_FLG_KEYID_MSK); 3497 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 3498 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 3499 3500 if (mcast) 3501 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3502 3503 /* 3504 * The fields assigned here are in the same location at the start 3505 * of the command, so we can do this union trick. 3506 */ 3507 u.cmd.common.key_flags = key_flags; 3508 u.cmd.common.key_offset = keyconf->hw_key_idx; 3509 u.cmd.common.sta_id = sta_id; 3510 3511 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 3512 3513 status = ADD_STA_SUCCESS; 3514 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 3515 &status); 3516 3517 switch (status) { 3518 case ADD_STA_SUCCESS: 3519 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 3520 break; 3521 default: 3522 ret = -EIO; 3523 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 3524 break; 3525 } 3526 3527 return ret; 3528 } 3529 3530 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3531 struct ieee80211_vif *vif, 3532 struct ieee80211_sta *sta, 3533 struct ieee80211_key_conf *keyconf, 3534 u8 key_offset) 3535 { 3536 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3537 struct iwl_mvm_sta *mvm_sta; 3538 u8 sta_id = IWL_MVM_INVALID_STA; 3539 int ret; 3540 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3541 3542 lockdep_assert_held(&mvm->mutex); 3543 3544 if (vif->type != NL80211_IFTYPE_AP || 3545 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3546 /* Get the station id from the mvm local station table */ 3547 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3548 if (!mvm_sta) { 3549 IWL_ERR(mvm, "Failed to find station\n"); 3550 return -EINVAL; 3551 } 3552 sta_id = mvm_sta->sta_id; 3553 3554 /* 3555 * It is possible that the 'sta' parameter is NULL, and thus 3556 * there is a need to retrieve the sta from the local station 3557 * table. 3558 */ 3559 if (!sta) { 3560 sta = rcu_dereference_protected( 3561 mvm->fw_id_to_mac_id[sta_id], 3562 lockdep_is_held(&mvm->mutex)); 3563 if (IS_ERR_OR_NULL(sta)) { 3564 IWL_ERR(mvm, "Invalid station id\n"); 3565 return -EINVAL; 3566 } 3567 } 3568 3569 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3570 return -EINVAL; 3571 } else { 3572 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3573 3574 sta_id = mvmvif->mcast_sta.sta_id; 3575 } 3576 3577 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3578 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3579 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3580 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3581 goto end; 3582 } 3583 3584 /* If the key_offset is not pre-assigned, we need to find a 3585 * new offset to use. In normal cases, the offset is not 3586 * pre-assigned, but during HW_RESTART we want to reuse the 3587 * same indices, so we pass them when this function is called. 3588 * 3589 * In D3 entry, we need to hardcoded the indices (because the 3590 * firmware hardcodes the PTK offset to 0). In this case, we 3591 * need to make sure we don't overwrite the hw_key_idx in the 3592 * keyconf structure, because otherwise we cannot configure 3593 * the original ones back when resuming. 3594 */ 3595 if (key_offset == STA_KEY_IDX_INVALID) { 3596 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3597 if (key_offset == STA_KEY_IDX_INVALID) 3598 return -ENOSPC; 3599 keyconf->hw_key_idx = key_offset; 3600 } 3601 3602 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3603 if (ret) 3604 goto end; 3605 3606 /* 3607 * For WEP, the same key is used for multicast and unicast. Upload it 3608 * again, using the same key offset, and now pointing the other one 3609 * to the same key slot (offset). 3610 * If this fails, remove the original as well. 3611 */ 3612 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3613 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3614 sta) { 3615 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3616 key_offset, !mcast); 3617 if (ret) { 3618 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3619 goto end; 3620 } 3621 } 3622 3623 __set_bit(key_offset, mvm->fw_key_table); 3624 3625 end: 3626 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3627 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3628 sta ? sta->addr : zero_addr, ret); 3629 return ret; 3630 } 3631 3632 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3633 struct ieee80211_vif *vif, 3634 struct ieee80211_sta *sta, 3635 struct ieee80211_key_conf *keyconf) 3636 { 3637 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3638 struct iwl_mvm_sta *mvm_sta; 3639 u8 sta_id = IWL_MVM_INVALID_STA; 3640 int ret, i; 3641 3642 lockdep_assert_held(&mvm->mutex); 3643 3644 /* Get the station from the mvm local station table */ 3645 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3646 if (mvm_sta) 3647 sta_id = mvm_sta->sta_id; 3648 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3649 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3650 3651 3652 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3653 keyconf->keyidx, sta_id); 3654 3655 if (mvm_sta && (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3656 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3657 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)) 3658 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3659 3660 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3661 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3662 keyconf->hw_key_idx); 3663 return -ENOENT; 3664 } 3665 3666 /* track which key was deleted last */ 3667 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3668 if (mvm->fw_key_deleted[i] < U8_MAX) 3669 mvm->fw_key_deleted[i]++; 3670 } 3671 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3672 3673 if (sta && !mvm_sta) { 3674 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3675 return 0; 3676 } 3677 3678 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3679 if (ret) 3680 return ret; 3681 3682 /* delete WEP key twice to get rid of (now useless) offset */ 3683 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3684 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3685 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3686 3687 return ret; 3688 } 3689 3690 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3691 struct ieee80211_vif *vif, 3692 struct ieee80211_key_conf *keyconf, 3693 struct ieee80211_sta *sta, u32 iv32, 3694 u16 *phase1key) 3695 { 3696 struct iwl_mvm_sta *mvm_sta; 3697 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3698 bool mfp = sta ? sta->mfp : false; 3699 3700 rcu_read_lock(); 3701 3702 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3703 if (WARN_ON_ONCE(!mvm_sta)) 3704 goto unlock; 3705 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3706 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3707 mfp); 3708 3709 unlock: 3710 rcu_read_unlock(); 3711 } 3712 3713 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3714 struct ieee80211_sta *sta) 3715 { 3716 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3717 struct iwl_mvm_add_sta_cmd cmd = { 3718 .add_modify = STA_MODE_MODIFY, 3719 .sta_id = mvmsta->sta_id, 3720 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3721 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3722 }; 3723 int ret; 3724 3725 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3726 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3727 if (ret) 3728 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3729 } 3730 3731 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3732 struct ieee80211_sta *sta, 3733 enum ieee80211_frame_release_type reason, 3734 u16 cnt, u16 tids, bool more_data, 3735 bool single_sta_queue) 3736 { 3737 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3738 struct iwl_mvm_add_sta_cmd cmd = { 3739 .add_modify = STA_MODE_MODIFY, 3740 .sta_id = mvmsta->sta_id, 3741 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3742 .sleep_tx_count = cpu_to_le16(cnt), 3743 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3744 }; 3745 int tid, ret; 3746 unsigned long _tids = tids; 3747 3748 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3749 * Note that this field is reserved and unused by firmware not 3750 * supporting GO uAPSD, so it's safe to always do this. 3751 */ 3752 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3753 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3754 3755 /* If we're releasing frames from aggregation or dqa queues then check 3756 * if all the queues that we're releasing frames from, combined, have: 3757 * - more frames than the service period, in which case more_data 3758 * needs to be set 3759 * - fewer than 'cnt' frames, in which case we need to adjust the 3760 * firmware command (but do that unconditionally) 3761 */ 3762 if (single_sta_queue) { 3763 int remaining = cnt; 3764 int sleep_tx_count; 3765 3766 spin_lock_bh(&mvmsta->lock); 3767 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3768 struct iwl_mvm_tid_data *tid_data; 3769 u16 n_queued; 3770 3771 tid_data = &mvmsta->tid_data[tid]; 3772 3773 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3774 if (n_queued > remaining) { 3775 more_data = true; 3776 remaining = 0; 3777 break; 3778 } 3779 remaining -= n_queued; 3780 } 3781 sleep_tx_count = cnt - remaining; 3782 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3783 mvmsta->sleep_tx_count = sleep_tx_count; 3784 spin_unlock_bh(&mvmsta->lock); 3785 3786 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3787 if (WARN_ON(cnt - remaining == 0)) { 3788 ieee80211_sta_eosp(sta); 3789 return; 3790 } 3791 } 3792 3793 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3794 if (more_data) 3795 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3796 3797 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3798 mvmsta->next_status_eosp = true; 3799 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3800 } else { 3801 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3802 } 3803 3804 /* block the Tx queues until the FW updated the sleep Tx count */ 3805 iwl_trans_block_txq_ptrs(mvm->trans, true); 3806 3807 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3808 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3809 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3810 if (ret) 3811 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3812 } 3813 3814 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3815 struct iwl_rx_cmd_buffer *rxb) 3816 { 3817 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3818 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3819 struct ieee80211_sta *sta; 3820 u32 sta_id = le32_to_cpu(notif->sta_id); 3821 3822 if (WARN_ON_ONCE(sta_id >= IWL_MVM_STATION_COUNT)) 3823 return; 3824 3825 rcu_read_lock(); 3826 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3827 if (!IS_ERR_OR_NULL(sta)) 3828 ieee80211_sta_eosp(sta); 3829 rcu_read_unlock(); 3830 } 3831 3832 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3833 struct iwl_mvm_sta *mvmsta, bool disable) 3834 { 3835 struct iwl_mvm_add_sta_cmd cmd = { 3836 .add_modify = STA_MODE_MODIFY, 3837 .sta_id = mvmsta->sta_id, 3838 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3839 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3840 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3841 }; 3842 int ret; 3843 3844 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3845 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3846 if (ret) 3847 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3848 } 3849 3850 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3851 struct ieee80211_sta *sta, 3852 bool disable) 3853 { 3854 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3855 3856 spin_lock_bh(&mvm_sta->lock); 3857 3858 if (mvm_sta->disable_tx == disable) { 3859 spin_unlock_bh(&mvm_sta->lock); 3860 return; 3861 } 3862 3863 mvm_sta->disable_tx = disable; 3864 3865 /* Tell mac80211 to start/stop queuing tx for this station */ 3866 ieee80211_sta_block_awake(mvm->hw, sta, disable); 3867 3868 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 3869 3870 spin_unlock_bh(&mvm_sta->lock); 3871 } 3872 3873 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 3874 struct iwl_mvm_vif *mvmvif, 3875 struct iwl_mvm_int_sta *sta, 3876 bool disable) 3877 { 3878 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 3879 struct iwl_mvm_add_sta_cmd cmd = { 3880 .add_modify = STA_MODE_MODIFY, 3881 .sta_id = sta->sta_id, 3882 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3883 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3884 .mac_id_n_color = cpu_to_le32(id), 3885 }; 3886 int ret; 3887 3888 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 0, 3889 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3890 if (ret) 3891 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3892 } 3893 3894 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 3895 struct iwl_mvm_vif *mvmvif, 3896 bool disable) 3897 { 3898 struct ieee80211_sta *sta; 3899 struct iwl_mvm_sta *mvm_sta; 3900 int i; 3901 3902 lockdep_assert_held(&mvm->mutex); 3903 3904 /* Block/unblock all the stations of the given mvmvif */ 3905 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 3906 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 3907 lockdep_is_held(&mvm->mutex)); 3908 if (IS_ERR_OR_NULL(sta)) 3909 continue; 3910 3911 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3912 if (mvm_sta->mac_id_n_color != 3913 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 3914 continue; 3915 3916 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 3917 } 3918 3919 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 3920 return; 3921 3922 /* Need to block/unblock also multicast station */ 3923 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 3924 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3925 &mvmvif->mcast_sta, disable); 3926 3927 /* 3928 * Only unblock the broadcast station (FW blocks it for immediate 3929 * quiet, not the driver) 3930 */ 3931 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 3932 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 3933 &mvmvif->bcast_sta, disable); 3934 } 3935 3936 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3937 { 3938 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3939 struct iwl_mvm_sta *mvmsta; 3940 3941 rcu_read_lock(); 3942 3943 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 3944 3945 if (!WARN_ON(!mvmsta)) 3946 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 3947 3948 rcu_read_unlock(); 3949 } 3950 3951 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 3952 { 3953 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3954 3955 /* 3956 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3957 * to align the wrap around of ssn so we compare relevant values. 3958 */ 3959 if (mvm->trans->cfg->gen2) 3960 sn &= 0xff; 3961 3962 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 3963 } 3964