1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2015, 2018-2022 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "mvm.h" 10 #include "sta.h" 11 #include "rs.h" 12 13 /* 14 * New version of ADD_STA_sta command added new fields at the end of the 15 * structure, so sending the size of the relevant API's structure is enough to 16 * support both API versions. 17 */ 18 static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm) 19 { 20 if (iwl_mvm_has_new_rx_api(mvm) || 21 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 22 return sizeof(struct iwl_mvm_add_sta_cmd); 23 else 24 return sizeof(struct iwl_mvm_add_sta_cmd_v7); 25 } 26 27 static int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, 28 enum nl80211_iftype iftype) 29 { 30 int sta_id; 31 u32 reserved_ids = 0; 32 33 BUILD_BUG_ON(IWL_MVM_STATION_COUNT_MAX > 32); 34 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); 35 36 lockdep_assert_held(&mvm->mutex); 37 38 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */ 39 if (iftype != NL80211_IFTYPE_STATION) 40 reserved_ids = BIT(0); 41 42 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */ 43 for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) { 44 if (BIT(sta_id) & reserved_ids) 45 continue; 46 47 if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 48 lockdep_is_held(&mvm->mutex))) 49 return sta_id; 50 } 51 return IWL_MVM_INVALID_STA; 52 } 53 54 /* send station add/update command to firmware */ 55 int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 56 bool update, unsigned int flags) 57 { 58 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 59 struct iwl_mvm_add_sta_cmd add_sta_cmd = { 60 .sta_id = mvm_sta->sta_id, 61 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 62 .add_modify = update ? 1 : 0, 63 .station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK | 64 STA_FLG_MIMO_EN_MSK | 65 STA_FLG_RTS_MIMO_PROT), 66 .tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg), 67 }; 68 int ret; 69 u32 status; 70 u32 agg_size = 0, mpdu_dens = 0; 71 72 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 73 add_sta_cmd.station_type = mvm_sta->sta_type; 74 75 if (!update || (flags & STA_MODIFY_QUEUES)) { 76 memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN); 77 78 if (!iwl_mvm_has_new_tx_api(mvm)) { 79 add_sta_cmd.tfd_queue_msk = 80 cpu_to_le32(mvm_sta->tfd_queue_msk); 81 82 if (flags & STA_MODIFY_QUEUES) 83 add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES; 84 } else { 85 WARN_ON(flags & STA_MODIFY_QUEUES); 86 } 87 } 88 89 switch (sta->deflink.bandwidth) { 90 case IEEE80211_STA_RX_BW_320: 91 case IEEE80211_STA_RX_BW_160: 92 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ); 93 fallthrough; 94 case IEEE80211_STA_RX_BW_80: 95 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ); 96 fallthrough; 97 case IEEE80211_STA_RX_BW_40: 98 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ); 99 fallthrough; 100 case IEEE80211_STA_RX_BW_20: 101 if (sta->deflink.ht_cap.ht_supported) 102 add_sta_cmd.station_flags |= 103 cpu_to_le32(STA_FLG_FAT_EN_20MHZ); 104 break; 105 } 106 107 switch (sta->deflink.rx_nss) { 108 case 1: 109 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 110 break; 111 case 2: 112 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2); 113 break; 114 case 3 ... 8: 115 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3); 116 break; 117 } 118 119 switch (sta->smps_mode) { 120 case IEEE80211_SMPS_AUTOMATIC: 121 case IEEE80211_SMPS_NUM_MODES: 122 WARN_ON(1); 123 break; 124 case IEEE80211_SMPS_STATIC: 125 /* override NSS */ 126 add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK); 127 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO); 128 break; 129 case IEEE80211_SMPS_DYNAMIC: 130 add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT); 131 break; 132 case IEEE80211_SMPS_OFF: 133 /* nothing */ 134 break; 135 } 136 137 if (sta->deflink.ht_cap.ht_supported) { 138 add_sta_cmd.station_flags_msk |= 139 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 140 STA_FLG_AGG_MPDU_DENS_MSK); 141 142 mpdu_dens = sta->deflink.ht_cap.ampdu_density; 143 } 144 145 if (mvm_sta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) { 146 add_sta_cmd.station_flags_msk |= 147 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK | 148 STA_FLG_AGG_MPDU_DENS_MSK); 149 150 mpdu_dens = le16_get_bits(sta->deflink.he_6ghz_capa.capa, 151 IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START); 152 agg_size = le16_get_bits(sta->deflink.he_6ghz_capa.capa, 153 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP); 154 } else if (sta->deflink.vht_cap.vht_supported) { 155 agg_size = sta->deflink.vht_cap.cap & 156 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK; 157 agg_size >>= 158 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; 159 } else if (sta->deflink.ht_cap.ht_supported) { 160 agg_size = sta->deflink.ht_cap.ampdu_factor; 161 } 162 163 /* D6.0 10.12.2 A-MPDU length limit rules 164 * A STA indicates the maximum length of the A-MPDU preEOF padding 165 * that it can receive in an HE PPDU in the Maximum A-MPDU Length 166 * Exponent field in its HT Capabilities, VHT Capabilities, 167 * and HE 6 GHz Band Capabilities elements (if present) and the 168 * Maximum AMPDU Length Exponent Extension field in its HE 169 * Capabilities element 170 */ 171 if (sta->deflink.he_cap.has_he) 172 agg_size += u8_get_bits(sta->deflink.he_cap.he_cap_elem.mac_cap_info[3], 173 IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK); 174 175 /* Limit to max A-MPDU supported by FW */ 176 if (agg_size > (STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT)) 177 agg_size = (STA_FLG_MAX_AGG_SIZE_4M >> 178 STA_FLG_MAX_AGG_SIZE_SHIFT); 179 180 add_sta_cmd.station_flags |= 181 cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT); 182 add_sta_cmd.station_flags |= 183 cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT); 184 if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC) 185 add_sta_cmd.assoc_id = cpu_to_le16(sta->aid); 186 187 if (sta->wme) { 188 add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS; 189 190 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 191 add_sta_cmd.uapsd_acs |= BIT(AC_BK); 192 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 193 add_sta_cmd.uapsd_acs |= BIT(AC_BE); 194 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 195 add_sta_cmd.uapsd_acs |= BIT(AC_VI); 196 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 197 add_sta_cmd.uapsd_acs |= BIT(AC_VO); 198 add_sta_cmd.uapsd_acs |= add_sta_cmd.uapsd_acs << 4; 199 add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128; 200 } 201 202 status = ADD_STA_SUCCESS; 203 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 204 iwl_mvm_add_sta_cmd_size(mvm), 205 &add_sta_cmd, &status); 206 if (ret) 207 return ret; 208 209 switch (status & IWL_ADD_STA_STATUS_MASK) { 210 case ADD_STA_SUCCESS: 211 IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n"); 212 break; 213 default: 214 ret = -EIO; 215 IWL_ERR(mvm, "ADD_STA failed\n"); 216 break; 217 } 218 219 return ret; 220 } 221 222 static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) 223 { 224 struct iwl_mvm_baid_data *data = 225 from_timer(data, t, session_timer); 226 struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; 227 struct iwl_mvm_baid_data *ba_data; 228 struct ieee80211_sta *sta; 229 struct iwl_mvm_sta *mvm_sta; 230 unsigned long timeout; 231 232 rcu_read_lock(); 233 234 ba_data = rcu_dereference(*rcu_ptr); 235 236 if (WARN_ON(!ba_data)) 237 goto unlock; 238 239 if (!ba_data->timeout) 240 goto unlock; 241 242 timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2); 243 if (time_is_after_jiffies(timeout)) { 244 mod_timer(&ba_data->session_timer, timeout); 245 goto unlock; 246 } 247 248 /* Timer expired */ 249 sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]); 250 251 /* 252 * sta should be valid unless the following happens: 253 * The firmware asserts which triggers a reconfig flow, but 254 * the reconfig fails before we set the pointer to sta into 255 * the fw_id_to_mac_id pointer table. Mac80211 can't stop 256 * A-MDPU and hence the timer continues to run. Then, the 257 * timer expires and sta is NULL. 258 */ 259 if (!sta) 260 goto unlock; 261 262 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 263 ieee80211_rx_ba_timer_expired(mvm_sta->vif, 264 sta->addr, ba_data->tid); 265 unlock: 266 rcu_read_unlock(); 267 } 268 269 /* Disable aggregations for a bitmap of TIDs for a given station */ 270 static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue, 271 unsigned long disable_agg_tids, 272 bool remove_queue) 273 { 274 struct iwl_mvm_add_sta_cmd cmd = {}; 275 struct ieee80211_sta *sta; 276 struct iwl_mvm_sta *mvmsta; 277 u32 status; 278 u8 sta_id; 279 280 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 281 return -EINVAL; 282 283 sta_id = mvm->queue_info[queue].ra_sta_id; 284 285 rcu_read_lock(); 286 287 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 288 289 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 290 rcu_read_unlock(); 291 return -EINVAL; 292 } 293 294 mvmsta = iwl_mvm_sta_from_mac80211(sta); 295 296 mvmsta->tid_disable_agg |= disable_agg_tids; 297 298 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 299 cmd.sta_id = mvmsta->sta_id; 300 cmd.add_modify = STA_MODE_MODIFY; 301 cmd.modify_mask = STA_MODIFY_QUEUES; 302 if (disable_agg_tids) 303 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 304 if (remove_queue) 305 cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL; 306 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 307 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 308 309 rcu_read_unlock(); 310 311 /* Notify FW of queue removal from the STA queues */ 312 status = ADD_STA_SUCCESS; 313 return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 314 iwl_mvm_add_sta_cmd_size(mvm), 315 &cmd, &status); 316 } 317 318 static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 319 u16 *queueptr, u8 tid) 320 { 321 int queue = *queueptr; 322 struct iwl_scd_txq_cfg_cmd cmd = { 323 .scd_queue = queue, 324 .action = SCD_CFG_DISABLE_QUEUE, 325 }; 326 int ret; 327 328 lockdep_assert_held(&mvm->mutex); 329 330 if (iwl_mvm_has_new_tx_api(mvm)) { 331 if (mvm->sta_remove_requires_queue_remove) { 332 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, 333 SCD_QUEUE_CONFIG_CMD); 334 struct iwl_scd_queue_cfg_cmd remove_cmd = { 335 .operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE), 336 .u.remove.queue = cpu_to_le32(queue), 337 }; 338 339 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, 340 sizeof(remove_cmd), 341 &remove_cmd); 342 } else { 343 ret = 0; 344 } 345 346 iwl_trans_txq_free(mvm->trans, queue); 347 *queueptr = IWL_MVM_INVALID_QUEUE; 348 349 return ret; 350 } 351 352 if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0)) 353 return 0; 354 355 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 356 357 cmd.action = mvm->queue_info[queue].tid_bitmap ? 358 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE; 359 if (cmd.action == SCD_CFG_DISABLE_QUEUE) 360 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE; 361 362 IWL_DEBUG_TX_QUEUES(mvm, 363 "Disabling TXQ #%d tids=0x%x\n", 364 queue, 365 mvm->queue_info[queue].tid_bitmap); 366 367 /* If the queue is still enabled - nothing left to do in this func */ 368 if (cmd.action == SCD_CFG_ENABLE_QUEUE) 369 return 0; 370 371 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 372 cmd.tid = mvm->queue_info[queue].txq_tid; 373 374 /* Make sure queue info is correct even though we overwrite it */ 375 WARN(mvm->queue_info[queue].tid_bitmap, 376 "TXQ #%d info out-of-sync - tids=0x%x\n", 377 queue, mvm->queue_info[queue].tid_bitmap); 378 379 /* If we are here - the queue is freed and we can zero out these vals */ 380 mvm->queue_info[queue].tid_bitmap = 0; 381 382 if (sta) { 383 struct iwl_mvm_txq *mvmtxq = 384 iwl_mvm_txq_from_tid(sta, tid); 385 386 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 387 } 388 389 /* Regardless if this is a reserved TXQ for a STA - mark it as false */ 390 mvm->queue_info[queue].reserved = false; 391 392 iwl_trans_txq_disable(mvm->trans, queue, false); 393 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, 394 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd); 395 396 if (ret) 397 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", 398 queue, ret); 399 return ret; 400 } 401 402 static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue) 403 { 404 struct ieee80211_sta *sta; 405 struct iwl_mvm_sta *mvmsta; 406 unsigned long tid_bitmap; 407 unsigned long agg_tids = 0; 408 u8 sta_id; 409 int tid; 410 411 lockdep_assert_held(&mvm->mutex); 412 413 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 414 return -EINVAL; 415 416 sta_id = mvm->queue_info[queue].ra_sta_id; 417 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 418 419 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 420 lockdep_is_held(&mvm->mutex)); 421 422 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 423 return -EINVAL; 424 425 mvmsta = iwl_mvm_sta_from_mac80211(sta); 426 427 spin_lock_bh(&mvmsta->lock); 428 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 429 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 430 agg_tids |= BIT(tid); 431 } 432 spin_unlock_bh(&mvmsta->lock); 433 434 return agg_tids; 435 } 436 437 /* 438 * Remove a queue from a station's resources. 439 * Note that this only marks as free. It DOESN'T delete a BA agreement, and 440 * doesn't disable the queue 441 */ 442 static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue) 443 { 444 struct ieee80211_sta *sta; 445 struct iwl_mvm_sta *mvmsta; 446 unsigned long tid_bitmap; 447 unsigned long disable_agg_tids = 0; 448 u8 sta_id; 449 int tid; 450 451 lockdep_assert_held(&mvm->mutex); 452 453 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 454 return -EINVAL; 455 456 sta_id = mvm->queue_info[queue].ra_sta_id; 457 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 458 459 rcu_read_lock(); 460 461 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 462 463 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { 464 rcu_read_unlock(); 465 return 0; 466 } 467 468 mvmsta = iwl_mvm_sta_from_mac80211(sta); 469 470 spin_lock_bh(&mvmsta->lock); 471 /* Unmap MAC queues and TIDs from this queue */ 472 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 473 struct iwl_mvm_txq *mvmtxq = 474 iwl_mvm_txq_from_tid(sta, tid); 475 476 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) 477 disable_agg_tids |= BIT(tid); 478 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 479 480 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 481 } 482 483 mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */ 484 spin_unlock_bh(&mvmsta->lock); 485 486 rcu_read_unlock(); 487 488 /* 489 * The TX path may have been using this TXQ_ID from the tid_data, 490 * so make sure it's no longer running so that we can safely reuse 491 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE 492 * above, but nothing guarantees we've stopped using them. Thus, 493 * without this, we could get to iwl_mvm_disable_txq() and remove 494 * the queue while still sending frames to it. 495 */ 496 synchronize_net(); 497 498 return disable_agg_tids; 499 } 500 501 static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue, 502 struct ieee80211_sta *old_sta, 503 u8 new_sta_id) 504 { 505 struct iwl_mvm_sta *mvmsta; 506 u8 sta_id, tid; 507 unsigned long disable_agg_tids = 0; 508 bool same_sta; 509 u16 queue_tmp = queue; 510 int ret; 511 512 lockdep_assert_held(&mvm->mutex); 513 514 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 515 return -EINVAL; 516 517 sta_id = mvm->queue_info[queue].ra_sta_id; 518 tid = mvm->queue_info[queue].txq_tid; 519 520 same_sta = sta_id == new_sta_id; 521 522 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); 523 if (WARN_ON(!mvmsta)) 524 return -EINVAL; 525 526 disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue); 527 /* Disable the queue */ 528 if (disable_agg_tids) 529 iwl_mvm_invalidate_sta_queue(mvm, queue, 530 disable_agg_tids, false); 531 532 ret = iwl_mvm_disable_txq(mvm, old_sta, &queue_tmp, tid); 533 if (ret) { 534 IWL_ERR(mvm, 535 "Failed to free inactive queue %d (ret=%d)\n", 536 queue, ret); 537 538 return ret; 539 } 540 541 /* If TXQ is allocated to another STA, update removal in FW */ 542 if (!same_sta) 543 iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true); 544 545 return 0; 546 } 547 548 static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm, 549 unsigned long tfd_queue_mask, u8 ac) 550 { 551 int queue = 0; 552 u8 ac_to_queue[IEEE80211_NUM_ACS]; 553 int i; 554 555 /* 556 * This protects us against grabbing a queue that's being reconfigured 557 * by the inactivity checker. 558 */ 559 lockdep_assert_held(&mvm->mutex); 560 561 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 562 return -EINVAL; 563 564 memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue)); 565 566 /* See what ACs the existing queues for this STA have */ 567 for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) { 568 /* Only DATA queues can be shared */ 569 if (i < IWL_MVM_DQA_MIN_DATA_QUEUE && 570 i != IWL_MVM_DQA_BSS_CLIENT_QUEUE) 571 continue; 572 573 ac_to_queue[mvm->queue_info[i].mac80211_ac] = i; 574 } 575 576 /* 577 * The queue to share is chosen only from DATA queues as follows (in 578 * descending priority): 579 * 1. An AC_BE queue 580 * 2. Same AC queue 581 * 3. Highest AC queue that is lower than new AC 582 * 4. Any existing AC (there always is at least 1 DATA queue) 583 */ 584 585 /* Priority 1: An AC_BE queue */ 586 if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE) 587 queue = ac_to_queue[IEEE80211_AC_BE]; 588 /* Priority 2: Same AC queue */ 589 else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE) 590 queue = ac_to_queue[ac]; 591 /* Priority 3a: If new AC is VO and VI exists - use VI */ 592 else if (ac == IEEE80211_AC_VO && 593 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 594 queue = ac_to_queue[IEEE80211_AC_VI]; 595 /* Priority 3b: No BE so only AC less than the new one is BK */ 596 else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE) 597 queue = ac_to_queue[IEEE80211_AC_BK]; 598 /* Priority 4a: No BE nor BK - use VI if exists */ 599 else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE) 600 queue = ac_to_queue[IEEE80211_AC_VI]; 601 /* Priority 4b: No BE, BK nor VI - use VO if exists */ 602 else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE) 603 queue = ac_to_queue[IEEE80211_AC_VO]; 604 605 /* Make sure queue found (or not) is legal */ 606 if (!iwl_mvm_is_dqa_data_queue(mvm, queue) && 607 !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) && 608 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) { 609 IWL_ERR(mvm, "No DATA queues available to share\n"); 610 return -ENOSPC; 611 } 612 613 return queue; 614 } 615 616 /* Re-configure the SCD for a queue that has already been configured */ 617 static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, 618 int sta_id, int tid, int frame_limit, u16 ssn) 619 { 620 struct iwl_scd_txq_cfg_cmd cmd = { 621 .scd_queue = queue, 622 .action = SCD_CFG_ENABLE_QUEUE, 623 .window = frame_limit, 624 .sta_id = sta_id, 625 .ssn = cpu_to_le16(ssn), 626 .tx_fifo = fifo, 627 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 628 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE), 629 .tid = tid, 630 }; 631 int ret; 632 633 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 634 return -EINVAL; 635 636 if (WARN(mvm->queue_info[queue].tid_bitmap == 0, 637 "Trying to reconfig unallocated queue %d\n", queue)) 638 return -ENXIO; 639 640 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue); 641 642 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 643 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n", 644 queue, fifo, ret); 645 646 return ret; 647 } 648 649 /* 650 * If a given queue has a higher AC than the TID stream that is being compared 651 * to, the queue needs to be redirected to the lower AC. This function does that 652 * in such a case, otherwise - if no redirection required - it does nothing, 653 * unless the %force param is true. 654 */ 655 static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid, 656 int ac, int ssn, unsigned int wdg_timeout, 657 bool force, struct iwl_mvm_txq *txq) 658 { 659 struct iwl_scd_txq_cfg_cmd cmd = { 660 .scd_queue = queue, 661 .action = SCD_CFG_DISABLE_QUEUE, 662 }; 663 bool shared_queue; 664 int ret; 665 666 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 667 return -EINVAL; 668 669 /* 670 * If the AC is lower than current one - FIFO needs to be redirected to 671 * the lowest one of the streams in the queue. Check if this is needed 672 * here. 673 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with 674 * value 3 and VO with value 0, so to check if ac X is lower than ac Y 675 * we need to check if the numerical value of X is LARGER than of Y. 676 */ 677 if (ac <= mvm->queue_info[queue].mac80211_ac && !force) { 678 IWL_DEBUG_TX_QUEUES(mvm, 679 "No redirection needed on TXQ #%d\n", 680 queue); 681 return 0; 682 } 683 684 cmd.sta_id = mvm->queue_info[queue].ra_sta_id; 685 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac]; 686 cmd.tid = mvm->queue_info[queue].txq_tid; 687 shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1; 688 689 IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n", 690 queue, iwl_mvm_ac_to_tx_fifo[ac]); 691 692 /* Stop the queue and wait for it to empty */ 693 txq->stopped = true; 694 695 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue)); 696 if (ret) { 697 IWL_ERR(mvm, "Error draining queue %d before reconfig\n", 698 queue); 699 ret = -EIO; 700 goto out; 701 } 702 703 /* Before redirecting the queue we need to de-activate it */ 704 iwl_trans_txq_disable(mvm->trans, queue, false); 705 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 706 if (ret) 707 IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue, 708 ret); 709 710 /* Make sure the SCD wrptr is correctly set before reconfiguring */ 711 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); 712 713 /* Update the TID "owner" of the queue */ 714 mvm->queue_info[queue].txq_tid = tid; 715 716 /* TODO: Work-around SCD bug when moving back by multiples of 0x40 */ 717 718 /* Redirect to lower AC */ 719 iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], 720 cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); 721 722 /* Update AC marking of the queue */ 723 mvm->queue_info[queue].mac80211_ac = ac; 724 725 /* 726 * Mark queue as shared in transport if shared 727 * Note this has to be done after queue enablement because enablement 728 * can also set this value, and there is no indication there to shared 729 * queues 730 */ 731 if (shared_queue) 732 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 733 734 out: 735 /* Continue using the queue */ 736 txq->stopped = false; 737 738 return ret; 739 } 740 741 static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, 742 u8 minq, u8 maxq) 743 { 744 int i; 745 746 lockdep_assert_held(&mvm->mutex); 747 748 if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues, 749 "max queue %d >= num_of_queues (%d)", maxq, 750 mvm->trans->trans_cfg->base_params->num_of_queues)) 751 maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1; 752 753 /* This should not be hit with new TX path */ 754 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 755 return -ENOSPC; 756 757 /* Start by looking for a free queue */ 758 for (i = minq; i <= maxq; i++) 759 if (mvm->queue_info[i].tid_bitmap == 0 && 760 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE) 761 return i; 762 763 return -ENOSPC; 764 } 765 766 static int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, 767 u8 sta_id, u8 tid, unsigned int timeout) 768 { 769 int queue, size; 770 771 if (tid == IWL_MAX_TID_COUNT) { 772 tid = IWL_MGMT_TID; 773 size = max_t(u32, IWL_MGMT_QUEUE_SIZE, 774 mvm->trans->cfg->min_txq_size); 775 } else { 776 struct ieee80211_sta *sta; 777 778 rcu_read_lock(); 779 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 780 781 /* this queue isn't used for traffic (cab_queue) */ 782 if (IS_ERR_OR_NULL(sta)) { 783 size = IWL_MGMT_QUEUE_SIZE; 784 } else if (sta->deflink.he_cap.has_he) { 785 /* support for 256 ba size */ 786 size = IWL_DEFAULT_QUEUE_SIZE_HE; 787 } else { 788 size = IWL_DEFAULT_QUEUE_SIZE; 789 } 790 791 rcu_read_unlock(); 792 } 793 794 /* take the min with bc tbl entries allowed */ 795 size = min_t(u32, size, mvm->trans->txqs.bc_tbl_size / sizeof(u16)); 796 797 /* size needs to be power of 2 values for calculating read/write pointers */ 798 size = rounddown_pow_of_two(size); 799 800 do { 801 queue = iwl_trans_txq_alloc(mvm->trans, 0, BIT(sta_id), 802 tid, size, timeout); 803 804 if (queue < 0) 805 IWL_DEBUG_TX_QUEUES(mvm, 806 "Failed allocating TXQ of size %d for sta %d tid %d, ret: %d\n", 807 size, sta_id, tid, queue); 808 size /= 2; 809 } while (queue < 0 && size >= 16); 810 811 if (queue < 0) 812 return queue; 813 814 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", 815 queue, sta_id, tid); 816 817 return queue; 818 } 819 820 static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm, 821 struct ieee80211_sta *sta, u8 ac, 822 int tid) 823 { 824 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 825 struct iwl_mvm_txq *mvmtxq = 826 iwl_mvm_txq_from_tid(sta, tid); 827 unsigned int wdg_timeout = 828 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 829 int queue = -1; 830 831 lockdep_assert_held(&mvm->mutex); 832 833 IWL_DEBUG_TX_QUEUES(mvm, 834 "Allocating queue for sta %d on tid %d\n", 835 mvmsta->sta_id, tid); 836 queue = iwl_mvm_tvqm_enable_txq(mvm, mvmsta->sta_id, tid, wdg_timeout); 837 if (queue < 0) 838 return queue; 839 840 mvmtxq->txq_id = queue; 841 mvm->tvqm_info[queue].txq_tid = tid; 842 mvm->tvqm_info[queue].sta_id = mvmsta->sta_id; 843 844 IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue); 845 846 spin_lock_bh(&mvmsta->lock); 847 mvmsta->tid_data[tid].txq_id = queue; 848 spin_unlock_bh(&mvmsta->lock); 849 850 return 0; 851 } 852 853 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, 854 struct ieee80211_sta *sta, 855 int queue, u8 sta_id, u8 tid) 856 { 857 bool enable_queue = true; 858 859 /* Make sure this TID isn't already enabled */ 860 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) { 861 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", 862 queue, tid); 863 return false; 864 } 865 866 /* Update mappings and refcounts */ 867 if (mvm->queue_info[queue].tid_bitmap) 868 enable_queue = false; 869 870 mvm->queue_info[queue].tid_bitmap |= BIT(tid); 871 mvm->queue_info[queue].ra_sta_id = sta_id; 872 873 if (enable_queue) { 874 if (tid != IWL_MAX_TID_COUNT) 875 mvm->queue_info[queue].mac80211_ac = 876 tid_to_mac80211_ac[tid]; 877 else 878 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; 879 880 mvm->queue_info[queue].txq_tid = tid; 881 } 882 883 if (sta) { 884 struct iwl_mvm_txq *mvmtxq = 885 iwl_mvm_txq_from_tid(sta, tid); 886 887 mvmtxq->txq_id = queue; 888 } 889 890 IWL_DEBUG_TX_QUEUES(mvm, 891 "Enabling TXQ #%d tids=0x%x\n", 892 queue, mvm->queue_info[queue].tid_bitmap); 893 894 return enable_queue; 895 } 896 897 static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 898 int queue, u16 ssn, 899 const struct iwl_trans_txq_scd_cfg *cfg, 900 unsigned int wdg_timeout) 901 { 902 struct iwl_scd_txq_cfg_cmd cmd = { 903 .scd_queue = queue, 904 .action = SCD_CFG_ENABLE_QUEUE, 905 .window = cfg->frame_limit, 906 .sta_id = cfg->sta_id, 907 .ssn = cpu_to_le16(ssn), 908 .tx_fifo = cfg->fifo, 909 .aggregate = cfg->aggregate, 910 .tid = cfg->tid, 911 }; 912 bool inc_ssn; 913 914 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 915 return false; 916 917 /* Send the enabling command if we need to */ 918 if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid)) 919 return false; 920 921 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, 922 NULL, wdg_timeout); 923 if (inc_ssn) 924 le16_add_cpu(&cmd.ssn, 1); 925 926 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd), 927 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo); 928 929 return inc_ssn; 930 } 931 932 static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue) 933 { 934 struct iwl_scd_txq_cfg_cmd cmd = { 935 .scd_queue = queue, 936 .action = SCD_CFG_UPDATE_QUEUE_TID, 937 }; 938 int tid; 939 unsigned long tid_bitmap; 940 int ret; 941 942 lockdep_assert_held(&mvm->mutex); 943 944 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 945 return; 946 947 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 948 949 if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue)) 950 return; 951 952 /* Find any TID for queue */ 953 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 954 cmd.tid = tid; 955 cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 956 957 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd); 958 if (ret) { 959 IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n", 960 queue, ret); 961 return; 962 } 963 964 mvm->queue_info[queue].txq_tid = tid; 965 IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n", 966 queue, tid); 967 } 968 969 static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue) 970 { 971 struct ieee80211_sta *sta; 972 struct iwl_mvm_sta *mvmsta; 973 u8 sta_id; 974 int tid = -1; 975 unsigned long tid_bitmap; 976 unsigned int wdg_timeout; 977 int ssn; 978 int ret = true; 979 980 /* queue sharing is disabled on new TX path */ 981 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 982 return; 983 984 lockdep_assert_held(&mvm->mutex); 985 986 sta_id = mvm->queue_info[queue].ra_sta_id; 987 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 988 989 /* Find TID for queue, and make sure it is the only one on the queue */ 990 tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1); 991 if (tid_bitmap != BIT(tid)) { 992 IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n", 993 queue, tid_bitmap); 994 return; 995 } 996 997 IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue, 998 tid); 999 1000 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1001 lockdep_is_held(&mvm->mutex)); 1002 1003 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) 1004 return; 1005 1006 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1007 wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1008 1009 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1010 1011 ret = iwl_mvm_redirect_queue(mvm, queue, tid, 1012 tid_to_mac80211_ac[tid], ssn, 1013 wdg_timeout, true, 1014 iwl_mvm_txq_from_tid(sta, tid)); 1015 if (ret) { 1016 IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue); 1017 return; 1018 } 1019 1020 /* If aggs should be turned back on - do it */ 1021 if (mvmsta->tid_data[tid].state == IWL_AGG_ON) { 1022 struct iwl_mvm_add_sta_cmd cmd = {0}; 1023 1024 mvmsta->tid_disable_agg &= ~BIT(tid); 1025 1026 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1027 cmd.sta_id = mvmsta->sta_id; 1028 cmd.add_modify = STA_MODE_MODIFY; 1029 cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX; 1030 cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk); 1031 cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg); 1032 1033 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 1034 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 1035 if (!ret) { 1036 IWL_DEBUG_TX_QUEUES(mvm, 1037 "TXQ #%d is now aggregated again\n", 1038 queue); 1039 1040 /* Mark queue intenally as aggregating again */ 1041 iwl_trans_txq_set_shared_mode(mvm->trans, queue, false); 1042 } 1043 } 1044 1045 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1046 } 1047 1048 /* 1049 * Remove inactive TIDs of a given queue. 1050 * If all queue TIDs are inactive - mark the queue as inactive 1051 * If only some the queue TIDs are inactive - unmap them from the queue 1052 * 1053 * Returns %true if all TIDs were removed and the queue could be reused. 1054 */ 1055 static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm, 1056 struct iwl_mvm_sta *mvmsta, int queue, 1057 unsigned long tid_bitmap, 1058 unsigned long *unshare_queues, 1059 unsigned long *changetid_queues) 1060 { 1061 unsigned int tid; 1062 1063 lockdep_assert_held(&mvmsta->lock); 1064 lockdep_assert_held(&mvm->mutex); 1065 1066 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1067 return false; 1068 1069 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */ 1070 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1071 /* If some TFDs are still queued - don't mark TID as inactive */ 1072 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid])) 1073 tid_bitmap &= ~BIT(tid); 1074 1075 /* Don't mark as inactive any TID that has an active BA */ 1076 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 1077 tid_bitmap &= ~BIT(tid); 1078 } 1079 1080 /* If all TIDs in the queue are inactive - return it can be reused */ 1081 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) { 1082 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue); 1083 return true; 1084 } 1085 1086 /* 1087 * If we are here, this is a shared queue and not all TIDs timed-out. 1088 * Remove the ones that did. 1089 */ 1090 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) { 1091 u16 q_tid_bitmap; 1092 1093 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE; 1094 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid); 1095 1096 q_tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1097 1098 /* 1099 * We need to take into account a situation in which a TXQ was 1100 * allocated to TID x, and then turned shared by adding TIDs y 1101 * and z. If TID x becomes inactive and is removed from the TXQ, 1102 * ownership must be given to one of the remaining TIDs. 1103 * This is mainly because if TID x continues - a new queue can't 1104 * be allocated for it as long as it is an owner of another TXQ. 1105 * 1106 * Mark this queue in the right bitmap, we'll send the command 1107 * to the firmware later. 1108 */ 1109 if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid))) 1110 set_bit(queue, changetid_queues); 1111 1112 IWL_DEBUG_TX_QUEUES(mvm, 1113 "Removing inactive TID %d from shared Q:%d\n", 1114 tid, queue); 1115 } 1116 1117 IWL_DEBUG_TX_QUEUES(mvm, 1118 "TXQ #%d left with tid bitmap 0x%x\n", queue, 1119 mvm->queue_info[queue].tid_bitmap); 1120 1121 /* 1122 * There may be different TIDs with the same mac queues, so make 1123 * sure all TIDs have existing corresponding mac queues enabled 1124 */ 1125 tid_bitmap = mvm->queue_info[queue].tid_bitmap; 1126 1127 /* If the queue is marked as shared - "unshare" it */ 1128 if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 && 1129 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) { 1130 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n", 1131 queue); 1132 set_bit(queue, unshare_queues); 1133 } 1134 1135 return false; 1136 } 1137 1138 /* 1139 * Check for inactivity - this includes checking if any queue 1140 * can be unshared and finding one (and only one) that can be 1141 * reused. 1142 * This function is also invoked as a sort of clean-up task, 1143 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA. 1144 * 1145 * Returns the queue number, or -ENOSPC. 1146 */ 1147 static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta) 1148 { 1149 unsigned long now = jiffies; 1150 unsigned long unshare_queues = 0; 1151 unsigned long changetid_queues = 0; 1152 int i, ret, free_queue = -ENOSPC; 1153 struct ieee80211_sta *queue_owner = NULL; 1154 1155 lockdep_assert_held(&mvm->mutex); 1156 1157 if (iwl_mvm_has_new_tx_api(mvm)) 1158 return -ENOSPC; 1159 1160 rcu_read_lock(); 1161 1162 /* we skip the CMD queue below by starting at 1 */ 1163 BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0); 1164 1165 for (i = 1; i < IWL_MAX_HW_QUEUES; i++) { 1166 struct ieee80211_sta *sta; 1167 struct iwl_mvm_sta *mvmsta; 1168 u8 sta_id; 1169 int tid; 1170 unsigned long inactive_tid_bitmap = 0; 1171 unsigned long queue_tid_bitmap; 1172 1173 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap; 1174 if (!queue_tid_bitmap) 1175 continue; 1176 1177 /* If TXQ isn't in active use anyway - nothing to do here... */ 1178 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY && 1179 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) 1180 continue; 1181 1182 /* Check to see if there are inactive TIDs on this queue */ 1183 for_each_set_bit(tid, &queue_tid_bitmap, 1184 IWL_MAX_TID_COUNT + 1) { 1185 if (time_after(mvm->queue_info[i].last_frame_time[tid] + 1186 IWL_MVM_DQA_QUEUE_TIMEOUT, now)) 1187 continue; 1188 1189 inactive_tid_bitmap |= BIT(tid); 1190 } 1191 1192 /* If all TIDs are active - finish check on this queue */ 1193 if (!inactive_tid_bitmap) 1194 continue; 1195 1196 /* 1197 * If we are here - the queue hadn't been served recently and is 1198 * in use 1199 */ 1200 1201 sta_id = mvm->queue_info[i].ra_sta_id; 1202 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 1203 1204 /* 1205 * If the STA doesn't exist anymore, it isn't an error. It could 1206 * be that it was removed since getting the queues, and in this 1207 * case it should've inactivated its queues anyway. 1208 */ 1209 if (IS_ERR_OR_NULL(sta)) 1210 continue; 1211 1212 mvmsta = iwl_mvm_sta_from_mac80211(sta); 1213 1214 spin_lock_bh(&mvmsta->lock); 1215 ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i, 1216 inactive_tid_bitmap, 1217 &unshare_queues, 1218 &changetid_queues); 1219 if (ret && free_queue < 0) { 1220 queue_owner = sta; 1221 free_queue = i; 1222 } 1223 /* only unlock sta lock - we still need the queue info lock */ 1224 spin_unlock_bh(&mvmsta->lock); 1225 } 1226 1227 1228 /* Reconfigure queues requiring reconfiguation */ 1229 for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES) 1230 iwl_mvm_unshare_queue(mvm, i); 1231 for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES) 1232 iwl_mvm_change_queue_tid(mvm, i); 1233 1234 rcu_read_unlock(); 1235 1236 if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) { 1237 ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner, 1238 alloc_for_sta); 1239 if (ret) 1240 return ret; 1241 } 1242 1243 return free_queue; 1244 } 1245 1246 static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm, 1247 struct ieee80211_sta *sta, u8 ac, int tid) 1248 { 1249 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1250 struct iwl_trans_txq_scd_cfg cfg = { 1251 .fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac), 1252 .sta_id = mvmsta->sta_id, 1253 .tid = tid, 1254 .frame_limit = IWL_FRAME_LIMIT, 1255 }; 1256 unsigned int wdg_timeout = 1257 iwl_mvm_get_wd_timeout(mvm, mvmsta->vif, false, false); 1258 int queue = -1; 1259 u16 queue_tmp; 1260 unsigned long disable_agg_tids = 0; 1261 enum iwl_mvm_agg_state queue_state; 1262 bool shared_queue = false, inc_ssn; 1263 int ssn; 1264 unsigned long tfd_queue_mask; 1265 int ret; 1266 1267 lockdep_assert_held(&mvm->mutex); 1268 1269 if (iwl_mvm_has_new_tx_api(mvm)) 1270 return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 1271 1272 spin_lock_bh(&mvmsta->lock); 1273 tfd_queue_mask = mvmsta->tfd_queue_msk; 1274 ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number); 1275 spin_unlock_bh(&mvmsta->lock); 1276 1277 if (tid == IWL_MAX_TID_COUNT) { 1278 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1279 IWL_MVM_DQA_MIN_MGMT_QUEUE, 1280 IWL_MVM_DQA_MAX_MGMT_QUEUE); 1281 if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE) 1282 IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n", 1283 queue); 1284 1285 /* If no such queue is found, we'll use a DATA queue instead */ 1286 } 1287 1288 if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) && 1289 (mvm->queue_info[mvmsta->reserved_queue].status == 1290 IWL_MVM_QUEUE_RESERVED)) { 1291 queue = mvmsta->reserved_queue; 1292 mvm->queue_info[queue].reserved = true; 1293 IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue); 1294 } 1295 1296 if (queue < 0) 1297 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1298 IWL_MVM_DQA_MIN_DATA_QUEUE, 1299 IWL_MVM_DQA_MAX_DATA_QUEUE); 1300 if (queue < 0) { 1301 /* try harder - perhaps kill an inactive queue */ 1302 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1303 } 1304 1305 /* No free queue - we'll have to share */ 1306 if (queue <= 0) { 1307 queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac); 1308 if (queue > 0) { 1309 shared_queue = true; 1310 mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED; 1311 } 1312 } 1313 1314 /* 1315 * Mark TXQ as ready, even though it hasn't been fully configured yet, 1316 * to make sure no one else takes it. 1317 * This will allow avoiding re-acquiring the lock at the end of the 1318 * configuration. On error we'll mark it back as free. 1319 */ 1320 if (queue > 0 && !shared_queue) 1321 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 1322 1323 /* This shouldn't happen - out of queues */ 1324 if (WARN_ON(queue <= 0)) { 1325 IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n", 1326 tid, cfg.sta_id); 1327 return queue; 1328 } 1329 1330 /* 1331 * Actual en/disablement of aggregations is through the ADD_STA HCMD, 1332 * but for configuring the SCD to send A-MPDUs we need to mark the queue 1333 * as aggregatable. 1334 * Mark all DATA queues as allowing to be aggregated at some point 1335 */ 1336 cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1337 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1338 1339 IWL_DEBUG_TX_QUEUES(mvm, 1340 "Allocating %squeue #%d to sta %d on tid %d\n", 1341 shared_queue ? "shared " : "", queue, 1342 mvmsta->sta_id, tid); 1343 1344 if (shared_queue) { 1345 /* Disable any open aggs on this queue */ 1346 disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue); 1347 1348 if (disable_agg_tids) { 1349 IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n", 1350 queue); 1351 iwl_mvm_invalidate_sta_queue(mvm, queue, 1352 disable_agg_tids, false); 1353 } 1354 } 1355 1356 inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout); 1357 1358 /* 1359 * Mark queue as shared in transport if shared 1360 * Note this has to be done after queue enablement because enablement 1361 * can also set this value, and there is no indication there to shared 1362 * queues 1363 */ 1364 if (shared_queue) 1365 iwl_trans_txq_set_shared_mode(mvm->trans, queue, true); 1366 1367 spin_lock_bh(&mvmsta->lock); 1368 /* 1369 * This looks racy, but it is not. We have only one packet for 1370 * this ra/tid in our Tx path since we stop the Qdisc when we 1371 * need to allocate a new TFD queue. 1372 */ 1373 if (inc_ssn) { 1374 mvmsta->tid_data[tid].seq_number += 0x10; 1375 ssn = (ssn + 1) & IEEE80211_SCTL_SEQ; 1376 } 1377 mvmsta->tid_data[tid].txq_id = queue; 1378 mvmsta->tfd_queue_msk |= BIT(queue); 1379 queue_state = mvmsta->tid_data[tid].state; 1380 1381 if (mvmsta->reserved_queue == queue) 1382 mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE; 1383 spin_unlock_bh(&mvmsta->lock); 1384 1385 if (!shared_queue) { 1386 ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES); 1387 if (ret) 1388 goto out_err; 1389 1390 /* If we need to re-enable aggregations... */ 1391 if (queue_state == IWL_AGG_ON) { 1392 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 1393 if (ret) 1394 goto out_err; 1395 } 1396 } else { 1397 /* Redirect queue, if needed */ 1398 ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn, 1399 wdg_timeout, false, 1400 iwl_mvm_txq_from_tid(sta, tid)); 1401 if (ret) 1402 goto out_err; 1403 } 1404 1405 return 0; 1406 1407 out_err: 1408 queue_tmp = queue; 1409 iwl_mvm_disable_txq(mvm, sta, &queue_tmp, tid); 1410 1411 return ret; 1412 } 1413 1414 void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk) 1415 { 1416 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, 1417 add_stream_wk); 1418 1419 mutex_lock(&mvm->mutex); 1420 1421 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1422 1423 while (!list_empty(&mvm->add_stream_txqs)) { 1424 struct iwl_mvm_txq *mvmtxq; 1425 struct ieee80211_txq *txq; 1426 u8 tid; 1427 1428 mvmtxq = list_first_entry(&mvm->add_stream_txqs, 1429 struct iwl_mvm_txq, list); 1430 1431 txq = container_of((void *)mvmtxq, struct ieee80211_txq, 1432 drv_priv); 1433 tid = txq->tid; 1434 if (tid == IEEE80211_NUM_TIDS) 1435 tid = IWL_MAX_TID_COUNT; 1436 1437 /* 1438 * We can't really do much here, but if this fails we can't 1439 * transmit anyway - so just don't transmit the frame etc. 1440 * and let them back up ... we've tried our best to allocate 1441 * a queue in the function itself. 1442 */ 1443 if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) { 1444 list_del_init(&mvmtxq->list); 1445 continue; 1446 } 1447 1448 list_del_init(&mvmtxq->list); 1449 local_bh_disable(); 1450 iwl_mvm_mac_itxq_xmit(mvm->hw, txq); 1451 local_bh_enable(); 1452 } 1453 1454 mutex_unlock(&mvm->mutex); 1455 } 1456 1457 static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm, 1458 struct ieee80211_sta *sta, 1459 enum nl80211_iftype vif_type) 1460 { 1461 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 1462 int queue; 1463 1464 /* queue reserving is disabled on new TX path */ 1465 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 1466 return 0; 1467 1468 /* run the general cleanup/unsharing of queues */ 1469 iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA); 1470 1471 /* Make sure we have free resources for this STA */ 1472 if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls && 1473 !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap && 1474 (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status == 1475 IWL_MVM_QUEUE_FREE)) 1476 queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; 1477 else 1478 queue = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 1479 IWL_MVM_DQA_MIN_DATA_QUEUE, 1480 IWL_MVM_DQA_MAX_DATA_QUEUE); 1481 if (queue < 0) { 1482 /* try again - this time kick out a queue if needed */ 1483 queue = iwl_mvm_inactivity_check(mvm, mvmsta->sta_id); 1484 if (queue < 0) { 1485 IWL_ERR(mvm, "No available queues for new station\n"); 1486 return -ENOSPC; 1487 } 1488 } 1489 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED; 1490 1491 mvmsta->reserved_queue = queue; 1492 1493 IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n", 1494 queue, mvmsta->sta_id); 1495 1496 return 0; 1497 } 1498 1499 /* 1500 * In DQA mode, after a HW restart the queues should be allocated as before, in 1501 * order to avoid race conditions when there are shared queues. This function 1502 * does the re-mapping and queue allocation. 1503 * 1504 * Note that re-enabling aggregations isn't done in this function. 1505 */ 1506 static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, 1507 struct ieee80211_sta *sta) 1508 { 1509 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1510 unsigned int wdg = 1511 iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif, false, false); 1512 int i; 1513 struct iwl_trans_txq_scd_cfg cfg = { 1514 .sta_id = mvm_sta->sta_id, 1515 .frame_limit = IWL_FRAME_LIMIT, 1516 }; 1517 1518 /* Make sure reserved queue is still marked as such (if allocated) */ 1519 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) 1520 mvm->queue_info[mvm_sta->reserved_queue].status = 1521 IWL_MVM_QUEUE_RESERVED; 1522 1523 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1524 struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i]; 1525 int txq_id = tid_data->txq_id; 1526 int ac; 1527 1528 if (txq_id == IWL_MVM_INVALID_QUEUE) 1529 continue; 1530 1531 ac = tid_to_mac80211_ac[i]; 1532 1533 if (iwl_mvm_has_new_tx_api(mvm)) { 1534 IWL_DEBUG_TX_QUEUES(mvm, 1535 "Re-mapping sta %d tid %d\n", 1536 mvm_sta->sta_id, i); 1537 txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id, 1538 i, wdg); 1539 /* 1540 * on failures, just set it to IWL_MVM_INVALID_QUEUE 1541 * to try again later, we have no other good way of 1542 * failing here 1543 */ 1544 if (txq_id < 0) 1545 txq_id = IWL_MVM_INVALID_QUEUE; 1546 tid_data->txq_id = txq_id; 1547 1548 /* 1549 * Since we don't set the seq number after reset, and HW 1550 * sets it now, FW reset will cause the seq num to start 1551 * at 0 again, so driver will need to update it 1552 * internally as well, so it keeps in sync with real val 1553 */ 1554 tid_data->seq_number = 0; 1555 } else { 1556 u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 1557 1558 cfg.tid = i; 1559 cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); 1560 cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE || 1561 txq_id == 1562 IWL_MVM_DQA_BSS_CLIENT_QUEUE); 1563 1564 IWL_DEBUG_TX_QUEUES(mvm, 1565 "Re-mapping sta %d tid %d to queue %d\n", 1566 mvm_sta->sta_id, i, txq_id); 1567 1568 iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg); 1569 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; 1570 } 1571 } 1572 } 1573 1574 static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm, 1575 struct iwl_mvm_int_sta *sta, 1576 const u8 *addr, 1577 u16 mac_id, u16 color) 1578 { 1579 struct iwl_mvm_add_sta_cmd cmd; 1580 int ret; 1581 u32 status = ADD_STA_SUCCESS; 1582 1583 lockdep_assert_held(&mvm->mutex); 1584 1585 memset(&cmd, 0, sizeof(cmd)); 1586 cmd.sta_id = sta->sta_id; 1587 1588 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12 && 1589 sta->type == IWL_STA_AUX_ACTIVITY) 1590 cmd.mac_id_n_color = cpu_to_le32(mac_id); 1591 else 1592 cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id, 1593 color)); 1594 1595 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 1596 cmd.station_type = sta->type; 1597 1598 if (!iwl_mvm_has_new_tx_api(mvm)) 1599 cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk); 1600 cmd.tid_disable_tx = cpu_to_le16(0xffff); 1601 1602 if (addr) 1603 memcpy(cmd.addr, addr, ETH_ALEN); 1604 1605 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1606 iwl_mvm_add_sta_cmd_size(mvm), 1607 &cmd, &status); 1608 if (ret) 1609 return ret; 1610 1611 switch (status & IWL_ADD_STA_STATUS_MASK) { 1612 case ADD_STA_SUCCESS: 1613 IWL_DEBUG_INFO(mvm, "Internal station added.\n"); 1614 return 0; 1615 default: 1616 ret = -EIO; 1617 IWL_ERR(mvm, "Add internal station failed, status=0x%x\n", 1618 status); 1619 break; 1620 } 1621 return ret; 1622 } 1623 1624 int iwl_mvm_add_sta(struct iwl_mvm *mvm, 1625 struct ieee80211_vif *vif, 1626 struct ieee80211_sta *sta) 1627 { 1628 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1629 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1630 struct iwl_mvm_rxq_dup_data *dup_data; 1631 int i, ret, sta_id; 1632 bool sta_update = false; 1633 unsigned int sta_flags = 0; 1634 1635 lockdep_assert_held(&mvm->mutex); 1636 1637 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1638 sta_id = iwl_mvm_find_free_sta_id(mvm, 1639 ieee80211_vif_type_p2p(vif)); 1640 else 1641 sta_id = mvm_sta->sta_id; 1642 1643 if (sta_id == IWL_MVM_INVALID_STA) 1644 return -ENOSPC; 1645 1646 spin_lock_init(&mvm_sta->lock); 1647 1648 /* if this is a HW restart re-alloc existing queues */ 1649 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1650 struct iwl_mvm_int_sta tmp_sta = { 1651 .sta_id = sta_id, 1652 .type = mvm_sta->sta_type, 1653 }; 1654 1655 /* 1656 * First add an empty station since allocating 1657 * a queue requires a valid station 1658 */ 1659 ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr, 1660 mvmvif->id, mvmvif->color); 1661 if (ret) 1662 goto err; 1663 1664 iwl_mvm_realloc_queues_after_restart(mvm, sta); 1665 sta_update = true; 1666 sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES; 1667 goto update_fw; 1668 } 1669 1670 mvm_sta->sta_id = sta_id; 1671 mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id, 1672 mvmvif->color); 1673 mvm_sta->vif = vif; 1674 if (!mvm->trans->trans_cfg->gen2) 1675 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_DEF; 1676 else 1677 mvm_sta->max_agg_bufsize = LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF; 1678 mvm_sta->tx_protection = 0; 1679 mvm_sta->tt_tx_protection = false; 1680 mvm_sta->sta_type = sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK; 1681 1682 /* HW restart, don't assume the memory has been zeroed */ 1683 mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */ 1684 mvm_sta->tfd_queue_msk = 0; 1685 1686 /* for HW restart - reset everything but the sequence number */ 1687 for (i = 0; i <= IWL_MAX_TID_COUNT; i++) { 1688 u16 seq = mvm_sta->tid_data[i].seq_number; 1689 memset(&mvm_sta->tid_data[i], 0, sizeof(mvm_sta->tid_data[i])); 1690 mvm_sta->tid_data[i].seq_number = seq; 1691 1692 /* 1693 * Mark all queues for this STA as unallocated and defer TX 1694 * frames until the queue is allocated 1695 */ 1696 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1697 } 1698 1699 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1700 struct iwl_mvm_txq *mvmtxq = 1701 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1702 1703 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1704 INIT_LIST_HEAD(&mvmtxq->list); 1705 atomic_set(&mvmtxq->tx_request, 0); 1706 } 1707 1708 mvm_sta->agg_tids = 0; 1709 1710 if (iwl_mvm_has_new_rx_api(mvm) && 1711 !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1712 int q; 1713 1714 dup_data = kcalloc(mvm->trans->num_rx_queues, 1715 sizeof(*dup_data), GFP_KERNEL); 1716 if (!dup_data) 1717 return -ENOMEM; 1718 /* 1719 * Initialize all the last_seq values to 0xffff which can never 1720 * compare equal to the frame's seq_ctrl in the check in 1721 * iwl_mvm_is_dup() since the lower 4 bits are the fragment 1722 * number and fragmented packets don't reach that function. 1723 * 1724 * This thus allows receiving a packet with seqno 0 and the 1725 * retry bit set as the very first packet on a new TID. 1726 */ 1727 for (q = 0; q < mvm->trans->num_rx_queues; q++) 1728 memset(dup_data[q].last_seq, 0xff, 1729 sizeof(dup_data[q].last_seq)); 1730 mvm_sta->dup_data = dup_data; 1731 } 1732 1733 if (!iwl_mvm_has_new_tx_api(mvm)) { 1734 ret = iwl_mvm_reserve_sta_stream(mvm, sta, 1735 ieee80211_vif_type_p2p(vif)); 1736 if (ret) 1737 goto err; 1738 } 1739 1740 /* 1741 * if rs is registered with mac80211, then "add station" will be handled 1742 * via the corresponding ops, otherwise need to notify rate scaling here 1743 */ 1744 if (iwl_mvm_has_tlc_offload(mvm)) 1745 iwl_mvm_rs_add_sta(mvm, mvm_sta); 1746 else 1747 spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock); 1748 1749 iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant); 1750 1751 update_fw: 1752 ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags); 1753 if (ret) 1754 goto err; 1755 1756 if (vif->type == NL80211_IFTYPE_STATION) { 1757 if (!sta->tdls) { 1758 WARN_ON(mvmvif->ap_sta_id != IWL_MVM_INVALID_STA); 1759 mvmvif->ap_sta_id = sta_id; 1760 } else { 1761 WARN_ON(mvmvif->ap_sta_id == IWL_MVM_INVALID_STA); 1762 } 1763 } 1764 1765 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta); 1766 1767 return 0; 1768 1769 err: 1770 return ret; 1771 } 1772 1773 int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta, 1774 bool drain) 1775 { 1776 struct iwl_mvm_add_sta_cmd cmd = {}; 1777 int ret; 1778 u32 status; 1779 1780 lockdep_assert_held(&mvm->mutex); 1781 1782 cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color); 1783 cmd.sta_id = mvmsta->sta_id; 1784 cmd.add_modify = STA_MODE_MODIFY; 1785 cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0; 1786 cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW); 1787 1788 status = ADD_STA_SUCCESS; 1789 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 1790 iwl_mvm_add_sta_cmd_size(mvm), 1791 &cmd, &status); 1792 if (ret) 1793 return ret; 1794 1795 switch (status & IWL_ADD_STA_STATUS_MASK) { 1796 case ADD_STA_SUCCESS: 1797 IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n", 1798 mvmsta->sta_id); 1799 break; 1800 default: 1801 ret = -EIO; 1802 IWL_ERR(mvm, "Couldn't drain frames for staid %d\n", 1803 mvmsta->sta_id); 1804 break; 1805 } 1806 1807 return ret; 1808 } 1809 1810 /* 1811 * Remove a station from the FW table. Before sending the command to remove 1812 * the station validate that the station is indeed known to the driver (sanity 1813 * only). 1814 */ 1815 static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id) 1816 { 1817 struct ieee80211_sta *sta; 1818 struct iwl_mvm_rm_sta_cmd rm_sta_cmd = { 1819 .sta_id = sta_id, 1820 }; 1821 int ret; 1822 1823 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 1824 lockdep_is_held(&mvm->mutex)); 1825 1826 /* Note: internal stations are marked as error values */ 1827 if (!sta) { 1828 IWL_ERR(mvm, "Invalid station id\n"); 1829 return -EINVAL; 1830 } 1831 1832 ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0, 1833 sizeof(rm_sta_cmd), &rm_sta_cmd); 1834 if (ret) { 1835 IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id); 1836 return ret; 1837 } 1838 1839 return 0; 1840 } 1841 1842 static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm, 1843 struct ieee80211_vif *vif, 1844 struct ieee80211_sta *sta) 1845 { 1846 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1847 int i; 1848 1849 lockdep_assert_held(&mvm->mutex); 1850 1851 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1852 if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE) 1853 continue; 1854 1855 iwl_mvm_disable_txq(mvm, sta, &mvm_sta->tid_data[i].txq_id, i); 1856 mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE; 1857 } 1858 1859 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) { 1860 struct iwl_mvm_txq *mvmtxq = 1861 iwl_mvm_txq_from_mac80211(sta->txq[i]); 1862 1863 mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE; 1864 } 1865 } 1866 1867 int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm, 1868 struct iwl_mvm_sta *mvm_sta) 1869 { 1870 int i; 1871 1872 for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) { 1873 u16 txq_id; 1874 int ret; 1875 1876 spin_lock_bh(&mvm_sta->lock); 1877 txq_id = mvm_sta->tid_data[i].txq_id; 1878 spin_unlock_bh(&mvm_sta->lock); 1879 1880 if (txq_id == IWL_MVM_INVALID_QUEUE) 1881 continue; 1882 1883 ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id); 1884 if (ret) 1885 return ret; 1886 } 1887 1888 return 0; 1889 } 1890 1891 int iwl_mvm_rm_sta(struct iwl_mvm *mvm, 1892 struct ieee80211_vif *vif, 1893 struct ieee80211_sta *sta) 1894 { 1895 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1896 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 1897 u8 sta_id = mvm_sta->sta_id; 1898 int ret; 1899 1900 lockdep_assert_held(&mvm->mutex); 1901 1902 if (iwl_mvm_has_new_rx_api(mvm)) 1903 kfree(mvm_sta->dup_data); 1904 1905 ret = iwl_mvm_drain_sta(mvm, mvm_sta, true); 1906 if (ret) 1907 return ret; 1908 1909 /* flush its queues here since we are freeing mvm_sta */ 1910 ret = iwl_mvm_flush_sta(mvm, mvm_sta, false); 1911 if (ret) 1912 return ret; 1913 if (iwl_mvm_has_new_tx_api(mvm)) { 1914 ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta); 1915 } else { 1916 u32 q_mask = mvm_sta->tfd_queue_msk; 1917 1918 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 1919 q_mask); 1920 } 1921 if (ret) 1922 return ret; 1923 1924 ret = iwl_mvm_drain_sta(mvm, mvm_sta, false); 1925 1926 iwl_mvm_disable_sta_queues(mvm, vif, sta); 1927 1928 /* If there is a TXQ still marked as reserved - free it */ 1929 if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) { 1930 u8 reserved_txq = mvm_sta->reserved_queue; 1931 enum iwl_mvm_queue_status *status; 1932 1933 /* 1934 * If no traffic has gone through the reserved TXQ - it 1935 * is still marked as IWL_MVM_QUEUE_RESERVED, and 1936 * should be manually marked as free again 1937 */ 1938 status = &mvm->queue_info[reserved_txq].status; 1939 if (WARN((*status != IWL_MVM_QUEUE_RESERVED) && 1940 (*status != IWL_MVM_QUEUE_FREE), 1941 "sta_id %d reserved txq %d status %d", 1942 sta_id, reserved_txq, *status)) 1943 return -EINVAL; 1944 1945 *status = IWL_MVM_QUEUE_FREE; 1946 } 1947 1948 if (vif->type == NL80211_IFTYPE_STATION && 1949 mvmvif->ap_sta_id == sta_id) { 1950 /* if associated - we can't remove the AP STA now */ 1951 if (vif->bss_conf.assoc) 1952 return ret; 1953 1954 /* unassoc - go ahead - remove the AP STA now */ 1955 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1956 } 1957 1958 /* 1959 * This shouldn't happen - the TDLS channel switch should be canceled 1960 * before the STA is removed. 1961 */ 1962 if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) { 1963 mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA; 1964 cancel_delayed_work(&mvm->tdls_cs.dwork); 1965 } 1966 1967 /* 1968 * Make sure that the tx response code sees the station as -EBUSY and 1969 * calls the drain worker. 1970 */ 1971 spin_lock_bh(&mvm_sta->lock); 1972 spin_unlock_bh(&mvm_sta->lock); 1973 1974 ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->sta_id); 1975 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->sta_id], NULL); 1976 1977 return ret; 1978 } 1979 1980 int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm, 1981 struct ieee80211_vif *vif, 1982 u8 sta_id) 1983 { 1984 int ret = iwl_mvm_rm_sta_common(mvm, sta_id); 1985 1986 lockdep_assert_held(&mvm->mutex); 1987 1988 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL); 1989 return ret; 1990 } 1991 1992 int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm, 1993 struct iwl_mvm_int_sta *sta, 1994 u32 qmask, enum nl80211_iftype iftype, 1995 enum iwl_sta_type type) 1996 { 1997 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1998 sta->sta_id == IWL_MVM_INVALID_STA) { 1999 sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype); 2000 if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA)) 2001 return -ENOSPC; 2002 } 2003 2004 sta->tfd_queue_msk = qmask; 2005 sta->type = type; 2006 2007 /* put a non-NULL value so iterating over the stations won't stop */ 2008 rcu_assign_pointer(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL)); 2009 return 0; 2010 } 2011 2012 void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta) 2013 { 2014 RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL); 2015 memset(sta, 0, sizeof(struct iwl_mvm_int_sta)); 2016 sta->sta_id = IWL_MVM_INVALID_STA; 2017 } 2018 2019 static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue, 2020 u8 sta_id, u8 fifo) 2021 { 2022 unsigned int wdg_timeout = 2023 mvm->trans->trans_cfg->base_params->wd_timeout; 2024 struct iwl_trans_txq_scd_cfg cfg = { 2025 .fifo = fifo, 2026 .sta_id = sta_id, 2027 .tid = IWL_MAX_TID_COUNT, 2028 .aggregate = false, 2029 .frame_limit = IWL_FRAME_LIMIT, 2030 }; 2031 2032 WARN_ON(iwl_mvm_has_new_tx_api(mvm)); 2033 2034 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2035 } 2036 2037 static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id) 2038 { 2039 unsigned int wdg_timeout = 2040 mvm->trans->trans_cfg->base_params->wd_timeout; 2041 2042 WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); 2043 2044 return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT, 2045 wdg_timeout); 2046 } 2047 2048 static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx, 2049 int maccolor, u8 *addr, 2050 struct iwl_mvm_int_sta *sta, 2051 u16 *queue, int fifo) 2052 { 2053 int ret; 2054 2055 /* Map queue to fifo - needs to happen before adding station */ 2056 if (!iwl_mvm_has_new_tx_api(mvm)) 2057 iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo); 2058 2059 ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor); 2060 if (ret) { 2061 if (!iwl_mvm_has_new_tx_api(mvm)) 2062 iwl_mvm_disable_txq(mvm, NULL, queue, 2063 IWL_MAX_TID_COUNT); 2064 return ret; 2065 } 2066 2067 /* 2068 * For 22000 firmware and on we cannot add queue to a station unknown 2069 * to firmware so enable queue here - after the station was added 2070 */ 2071 if (iwl_mvm_has_new_tx_api(mvm)) { 2072 int txq; 2073 2074 txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id); 2075 if (txq < 0) { 2076 iwl_mvm_rm_sta_common(mvm, sta->sta_id); 2077 return txq; 2078 } 2079 2080 *queue = txq; 2081 } 2082 2083 return 0; 2084 } 2085 2086 int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id) 2087 { 2088 int ret; 2089 2090 lockdep_assert_held(&mvm->mutex); 2091 2092 /* Allocate aux station and assign to it the aux queue */ 2093 ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, BIT(mvm->aux_queue), 2094 NL80211_IFTYPE_UNSPECIFIED, 2095 IWL_STA_AUX_ACTIVITY); 2096 if (ret) 2097 return ret; 2098 2099 /* 2100 * In CDB NICs we need to specify which lmac to use for aux activity 2101 * using the mac_id argument place to send lmac_id to the function 2102 */ 2103 ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL, 2104 &mvm->aux_sta, &mvm->aux_queue, 2105 IWL_MVM_TX_FIFO_MCAST); 2106 if (ret) { 2107 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2108 return ret; 2109 } 2110 2111 return 0; 2112 } 2113 2114 int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2115 { 2116 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2117 2118 lockdep_assert_held(&mvm->mutex); 2119 2120 return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 2121 NULL, &mvm->snif_sta, 2122 &mvm->snif_queue, 2123 IWL_MVM_TX_FIFO_BE); 2124 } 2125 2126 int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2127 { 2128 int ret; 2129 2130 lockdep_assert_held(&mvm->mutex); 2131 2132 if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA)) 2133 return -EINVAL; 2134 2135 iwl_mvm_disable_txq(mvm, NULL, &mvm->snif_queue, IWL_MAX_TID_COUNT); 2136 ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id); 2137 if (ret) 2138 IWL_WARN(mvm, "Failed sending remove station\n"); 2139 2140 return ret; 2141 } 2142 2143 int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm) 2144 { 2145 int ret; 2146 2147 lockdep_assert_held(&mvm->mutex); 2148 2149 if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA)) 2150 return -EINVAL; 2151 2152 iwl_mvm_disable_txq(mvm, NULL, &mvm->aux_queue, IWL_MAX_TID_COUNT); 2153 ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id); 2154 if (ret) 2155 IWL_WARN(mvm, "Failed sending remove station\n"); 2156 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta); 2157 2158 return ret; 2159 } 2160 2161 void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm) 2162 { 2163 iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta); 2164 } 2165 2166 /* 2167 * Send the add station command for the vif's broadcast station. 2168 * Assumes that the station was already allocated. 2169 * 2170 * @mvm: the mvm component 2171 * @vif: the interface to which the broadcast station is added 2172 * @bsta: the broadcast station to add. 2173 */ 2174 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2175 { 2176 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2177 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2178 static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; 2179 const u8 *baddr = _baddr; 2180 int queue; 2181 int ret; 2182 unsigned int wdg_timeout = 2183 iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2184 struct iwl_trans_txq_scd_cfg cfg = { 2185 .fifo = IWL_MVM_TX_FIFO_VO, 2186 .sta_id = mvmvif->bcast_sta.sta_id, 2187 .tid = IWL_MAX_TID_COUNT, 2188 .aggregate = false, 2189 .frame_limit = IWL_FRAME_LIMIT, 2190 }; 2191 2192 lockdep_assert_held(&mvm->mutex); 2193 2194 if (!iwl_mvm_has_new_tx_api(mvm)) { 2195 if (vif->type == NL80211_IFTYPE_AP || 2196 vif->type == NL80211_IFTYPE_ADHOC) { 2197 queue = mvm->probe_queue; 2198 } else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 2199 queue = mvm->p2p_dev_queue; 2200 } else { 2201 WARN(1, "Missing required TXQ for adding bcast STA\n"); 2202 return -EINVAL; 2203 } 2204 2205 bsta->tfd_queue_msk |= BIT(queue); 2206 2207 iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout); 2208 } 2209 2210 if (vif->type == NL80211_IFTYPE_ADHOC) 2211 baddr = vif->bss_conf.bssid; 2212 2213 if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA)) 2214 return -ENOSPC; 2215 2216 ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr, 2217 mvmvif->id, mvmvif->color); 2218 if (ret) 2219 return ret; 2220 2221 /* 2222 * For 22000 firmware and on we cannot add queue to a station unknown 2223 * to firmware so enable queue here - after the station was added 2224 */ 2225 if (iwl_mvm_has_new_tx_api(mvm)) { 2226 queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id, 2227 IWL_MAX_TID_COUNT, 2228 wdg_timeout); 2229 if (queue < 0) { 2230 iwl_mvm_rm_sta_common(mvm, bsta->sta_id); 2231 return queue; 2232 } 2233 2234 if (vif->type == NL80211_IFTYPE_AP || 2235 vif->type == NL80211_IFTYPE_ADHOC) 2236 mvm->probe_queue = queue; 2237 else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) 2238 mvm->p2p_dev_queue = queue; 2239 } 2240 2241 return 0; 2242 } 2243 2244 static void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm, 2245 struct ieee80211_vif *vif) 2246 { 2247 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2248 u16 *queueptr, queue; 2249 2250 lockdep_assert_held(&mvm->mutex); 2251 2252 iwl_mvm_flush_sta(mvm, &mvmvif->bcast_sta, true); 2253 2254 switch (vif->type) { 2255 case NL80211_IFTYPE_AP: 2256 case NL80211_IFTYPE_ADHOC: 2257 queueptr = &mvm->probe_queue; 2258 break; 2259 case NL80211_IFTYPE_P2P_DEVICE: 2260 queueptr = &mvm->p2p_dev_queue; 2261 break; 2262 default: 2263 WARN(1, "Can't free bcast queue on vif type %d\n", 2264 vif->type); 2265 return; 2266 } 2267 2268 queue = *queueptr; 2269 iwl_mvm_disable_txq(mvm, NULL, queueptr, IWL_MAX_TID_COUNT); 2270 if (iwl_mvm_has_new_tx_api(mvm)) 2271 return; 2272 2273 WARN_ON(!(mvmvif->bcast_sta.tfd_queue_msk & BIT(queue))); 2274 mvmvif->bcast_sta.tfd_queue_msk &= ~BIT(queue); 2275 } 2276 2277 /* Send the FW a request to remove the station from it's internal data 2278 * structures, but DO NOT remove the entry from the local data structures. */ 2279 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2280 { 2281 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2282 int ret; 2283 2284 lockdep_assert_held(&mvm->mutex); 2285 2286 iwl_mvm_free_bcast_sta_queues(mvm, vif); 2287 2288 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->bcast_sta.sta_id); 2289 if (ret) 2290 IWL_WARN(mvm, "Failed sending remove station\n"); 2291 return ret; 2292 } 2293 2294 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2295 { 2296 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2297 2298 lockdep_assert_held(&mvm->mutex); 2299 2300 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta, 0, 2301 ieee80211_vif_type_p2p(vif), 2302 IWL_STA_GENERAL_PURPOSE); 2303 } 2304 2305 /* Allocate a new station entry for the broadcast station to the given vif, 2306 * and send it to the FW. 2307 * Note that each P2P mac should have its own broadcast station. 2308 * 2309 * @mvm: the mvm component 2310 * @vif: the interface to which the broadcast station is added 2311 * @bsta: the broadcast station to add. */ 2312 int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2313 { 2314 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2315 struct iwl_mvm_int_sta *bsta = &mvmvif->bcast_sta; 2316 int ret; 2317 2318 lockdep_assert_held(&mvm->mutex); 2319 2320 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 2321 if (ret) 2322 return ret; 2323 2324 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2325 2326 if (ret) 2327 iwl_mvm_dealloc_int_sta(mvm, bsta); 2328 2329 return ret; 2330 } 2331 2332 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2333 { 2334 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2335 2336 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); 2337 } 2338 2339 /* 2340 * Send the FW a request to remove the station from it's internal data 2341 * structures, and in addition remove it from the local data structure. 2342 */ 2343 int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2344 { 2345 int ret; 2346 2347 lockdep_assert_held(&mvm->mutex); 2348 2349 ret = iwl_mvm_send_rm_bcast_sta(mvm, vif); 2350 2351 iwl_mvm_dealloc_bcast_sta(mvm, vif); 2352 2353 return ret; 2354 } 2355 2356 /* 2357 * Allocate a new station entry for the multicast station to the given vif, 2358 * and send it to the FW. 2359 * Note that each AP/GO mac should have its own multicast station. 2360 * 2361 * @mvm: the mvm component 2362 * @vif: the interface to which the multicast station is added 2363 */ 2364 int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2365 { 2366 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2367 struct iwl_mvm_int_sta *msta = &mvmvif->mcast_sta; 2368 static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00}; 2369 const u8 *maddr = _maddr; 2370 struct iwl_trans_txq_scd_cfg cfg = { 2371 .fifo = vif->type == NL80211_IFTYPE_AP ? 2372 IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE, 2373 .sta_id = msta->sta_id, 2374 .tid = 0, 2375 .aggregate = false, 2376 .frame_limit = IWL_FRAME_LIMIT, 2377 }; 2378 unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif, false, false); 2379 int ret; 2380 2381 lockdep_assert_held(&mvm->mutex); 2382 2383 if (WARN_ON(vif->type != NL80211_IFTYPE_AP && 2384 vif->type != NL80211_IFTYPE_ADHOC)) 2385 return -ENOTSUPP; 2386 2387 /* 2388 * In IBSS, ieee80211_check_queues() sets the cab_queue to be 2389 * invalid, so make sure we use the queue we want. 2390 * Note that this is done here as we want to avoid making DQA 2391 * changes in mac80211 layer. 2392 */ 2393 if (vif->type == NL80211_IFTYPE_ADHOC) 2394 mvmvif->cab_queue = IWL_MVM_DQA_GCAST_QUEUE; 2395 2396 /* 2397 * While in previous FWs we had to exclude cab queue from TFD queue 2398 * mask, now it is needed as any other queue. 2399 */ 2400 if (!iwl_mvm_has_new_tx_api(mvm) && 2401 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2402 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2403 timeout); 2404 msta->tfd_queue_msk |= BIT(mvmvif->cab_queue); 2405 } 2406 ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr, 2407 mvmvif->id, mvmvif->color); 2408 if (ret) 2409 goto err; 2410 2411 /* 2412 * Enable cab queue after the ADD_STA command is sent. 2413 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG 2414 * command with unknown station id, and for FW that doesn't support 2415 * station API since the cab queue is not included in the 2416 * tfd_queue_mask. 2417 */ 2418 if (iwl_mvm_has_new_tx_api(mvm)) { 2419 int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id, 2420 0, 2421 timeout); 2422 if (queue < 0) { 2423 ret = queue; 2424 goto err; 2425 } 2426 mvmvif->cab_queue = queue; 2427 } else if (!fw_has_api(&mvm->fw->ucode_capa, 2428 IWL_UCODE_TLV_API_STA_TYPE)) 2429 iwl_mvm_enable_txq(mvm, NULL, mvmvif->cab_queue, 0, &cfg, 2430 timeout); 2431 2432 return 0; 2433 err: 2434 iwl_mvm_dealloc_int_sta(mvm, msta); 2435 return ret; 2436 } 2437 2438 static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id, 2439 struct ieee80211_key_conf *keyconf, 2440 bool mcast) 2441 { 2442 union { 2443 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 2444 struct iwl_mvm_add_sta_key_cmd cmd; 2445 } u = {}; 2446 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 2447 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 2448 __le16 key_flags; 2449 int ret, size; 2450 u32 status; 2451 2452 /* This is a valid situation for GTK removal */ 2453 if (sta_id == IWL_MVM_INVALID_STA) 2454 return 0; 2455 2456 key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) & 2457 STA_KEY_FLG_KEYID_MSK); 2458 key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP); 2459 key_flags |= cpu_to_le16(STA_KEY_NOT_VALID); 2460 2461 if (mcast) 2462 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 2463 2464 /* 2465 * The fields assigned here are in the same location at the start 2466 * of the command, so we can do this union trick. 2467 */ 2468 u.cmd.common.key_flags = key_flags; 2469 u.cmd.common.key_offset = keyconf->hw_key_idx; 2470 u.cmd.common.sta_id = sta_id; 2471 2472 size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1); 2473 2474 status = ADD_STA_SUCCESS; 2475 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd, 2476 &status); 2477 2478 switch (status) { 2479 case ADD_STA_SUCCESS: 2480 IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n"); 2481 break; 2482 default: 2483 ret = -EIO; 2484 IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n"); 2485 break; 2486 } 2487 2488 return ret; 2489 } 2490 2491 /* 2492 * Send the FW a request to remove the station from it's internal data 2493 * structures, and in addition remove it from the local data structure. 2494 */ 2495 int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 2496 { 2497 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2498 int ret; 2499 2500 lockdep_assert_held(&mvm->mutex); 2501 2502 iwl_mvm_flush_sta(mvm, &mvmvif->mcast_sta, true); 2503 2504 iwl_mvm_disable_txq(mvm, NULL, &mvmvif->cab_queue, 0); 2505 2506 ret = iwl_mvm_rm_sta_common(mvm, mvmvif->mcast_sta.sta_id); 2507 if (ret) 2508 IWL_WARN(mvm, "Failed sending remove station\n"); 2509 2510 return ret; 2511 } 2512 2513 static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid) 2514 { 2515 struct iwl_mvm_delba_data notif = { 2516 .baid = baid, 2517 }; 2518 2519 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true, 2520 ¬if, sizeof(notif)); 2521 }; 2522 2523 static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, 2524 struct iwl_mvm_baid_data *data) 2525 { 2526 int i; 2527 2528 iwl_mvm_sync_rxq_del_ba(mvm, data->baid); 2529 2530 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2531 int j; 2532 struct iwl_mvm_reorder_buffer *reorder_buf = 2533 &data->reorder_buf[i]; 2534 struct iwl_mvm_reorder_buf_entry *entries = 2535 &data->entries[i * data->entries_per_queue]; 2536 2537 spin_lock_bh(&reorder_buf->lock); 2538 if (likely(!reorder_buf->num_stored)) { 2539 spin_unlock_bh(&reorder_buf->lock); 2540 continue; 2541 } 2542 2543 /* 2544 * This shouldn't happen in regular DELBA since the internal 2545 * delBA notification should trigger a release of all frames in 2546 * the reorder buffer. 2547 */ 2548 WARN_ON(1); 2549 2550 for (j = 0; j < reorder_buf->buf_size; j++) 2551 __skb_queue_purge(&entries[j].e.frames); 2552 /* 2553 * Prevent timer re-arm. This prevents a very far fetched case 2554 * where we timed out on the notification. There may be prior 2555 * RX frames pending in the RX queue before the notification 2556 * that might get processed between now and the actual deletion 2557 * and we would re-arm the timer although we are deleting the 2558 * reorder buffer. 2559 */ 2560 reorder_buf->removed = true; 2561 spin_unlock_bh(&reorder_buf->lock); 2562 del_timer_sync(&reorder_buf->reorder_timer); 2563 } 2564 } 2565 2566 static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, 2567 struct iwl_mvm_baid_data *data, 2568 u16 ssn, u16 buf_size) 2569 { 2570 int i; 2571 2572 for (i = 0; i < mvm->trans->num_rx_queues; i++) { 2573 struct iwl_mvm_reorder_buffer *reorder_buf = 2574 &data->reorder_buf[i]; 2575 struct iwl_mvm_reorder_buf_entry *entries = 2576 &data->entries[i * data->entries_per_queue]; 2577 int j; 2578 2579 reorder_buf->num_stored = 0; 2580 reorder_buf->head_sn = ssn; 2581 reorder_buf->buf_size = buf_size; 2582 /* rx reorder timer */ 2583 timer_setup(&reorder_buf->reorder_timer, 2584 iwl_mvm_reorder_timer_expired, 0); 2585 spin_lock_init(&reorder_buf->lock); 2586 reorder_buf->mvm = mvm; 2587 reorder_buf->queue = i; 2588 reorder_buf->valid = false; 2589 for (j = 0; j < reorder_buf->buf_size; j++) 2590 __skb_queue_head_init(&entries[j].e.frames); 2591 } 2592 } 2593 2594 static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm, 2595 struct iwl_mvm_sta *mvm_sta, 2596 bool start, int tid, u16 ssn, 2597 u16 buf_size) 2598 { 2599 struct iwl_mvm_add_sta_cmd cmd = { 2600 .mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color), 2601 .sta_id = mvm_sta->sta_id, 2602 .add_modify = STA_MODE_MODIFY, 2603 }; 2604 u32 status; 2605 int ret; 2606 2607 if (start) { 2608 cmd.add_immediate_ba_tid = tid; 2609 cmd.add_immediate_ba_ssn = cpu_to_le16(ssn); 2610 cmd.rx_ba_window = cpu_to_le16(buf_size); 2611 cmd.modify_mask = STA_MODIFY_ADD_BA_TID; 2612 } else { 2613 cmd.remove_immediate_ba_tid = tid; 2614 cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID; 2615 } 2616 2617 status = ADD_STA_SUCCESS; 2618 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2619 iwl_mvm_add_sta_cmd_size(mvm), 2620 &cmd, &status); 2621 if (ret) 2622 return ret; 2623 2624 switch (status & IWL_ADD_STA_STATUS_MASK) { 2625 case ADD_STA_SUCCESS: 2626 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2627 start ? "start" : "stopp"); 2628 if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) && 2629 !(status & IWL_ADD_STA_BAID_VALID_MASK))) 2630 return -EINVAL; 2631 return u32_get_bits(status, IWL_ADD_STA_BAID_MASK); 2632 case ADD_STA_IMMEDIATE_BA_FAILURE: 2633 IWL_WARN(mvm, "RX BA Session refused by fw\n"); 2634 return -ENOSPC; 2635 default: 2636 IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n", 2637 start ? "start" : "stopp", status); 2638 return -EIO; 2639 } 2640 } 2641 2642 static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm, 2643 struct iwl_mvm_sta *mvm_sta, 2644 bool start, int tid, u16 ssn, 2645 u16 buf_size, int baid) 2646 { 2647 struct iwl_rx_baid_cfg_cmd cmd = { 2648 .action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) : 2649 cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE), 2650 }; 2651 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD); 2652 int ret; 2653 2654 BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid)); 2655 2656 if (start) { 2657 cmd.alloc.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2658 cmd.alloc.tid = tid; 2659 cmd.alloc.ssn = cpu_to_le16(ssn); 2660 cmd.alloc.win_size = cpu_to_le16(buf_size); 2661 baid = -EIO; 2662 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 1) == 1) { 2663 cmd.remove_v1.baid = cpu_to_le32(baid); 2664 BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove)); 2665 } else { 2666 cmd.remove.sta_id_mask = cpu_to_le32(BIT(mvm_sta->sta_id)); 2667 cmd.remove.tid = cpu_to_le32(tid); 2668 } 2669 2670 ret = iwl_mvm_send_cmd_pdu_status(mvm, cmd_id, sizeof(cmd), 2671 &cmd, &baid); 2672 if (ret) 2673 return ret; 2674 2675 if (!start) { 2676 /* ignore firmware baid on remove */ 2677 baid = 0; 2678 } 2679 2680 IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n", 2681 start ? "start" : "stopp"); 2682 2683 if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map)) 2684 return -EINVAL; 2685 2686 return baid; 2687 } 2688 2689 static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvm_sta, 2690 bool start, int tid, u16 ssn, u16 buf_size, 2691 int baid) 2692 { 2693 if (fw_has_capa(&mvm->fw->ucode_capa, 2694 IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT)) 2695 return iwl_mvm_fw_baid_op_cmd(mvm, mvm_sta, start, 2696 tid, ssn, buf_size, baid); 2697 2698 return iwl_mvm_fw_baid_op_sta(mvm, mvm_sta, start, 2699 tid, ssn, buf_size); 2700 } 2701 2702 int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2703 int tid, u16 ssn, bool start, u16 buf_size, u16 timeout) 2704 { 2705 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2706 struct iwl_mvm_baid_data *baid_data = NULL; 2707 int ret, baid; 2708 u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID : 2709 IWL_MAX_BAID_OLD; 2710 2711 lockdep_assert_held(&mvm->mutex); 2712 2713 if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) { 2714 IWL_WARN(mvm, "Not enough RX BA SESSIONS\n"); 2715 return -ENOSPC; 2716 } 2717 2718 if (iwl_mvm_has_new_rx_api(mvm) && start) { 2719 u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); 2720 2721 /* sparse doesn't like the __align() so don't check */ 2722 #ifndef __CHECKER__ 2723 /* 2724 * The division below will be OK if either the cache line size 2725 * can be divided by the entry size (ALIGN will round up) or if 2726 * if the entry size can be divided by the cache line size, in 2727 * which case the ALIGN() will do nothing. 2728 */ 2729 BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && 2730 sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); 2731 #endif 2732 2733 /* 2734 * Upward align the reorder buffer size to fill an entire cache 2735 * line for each queue, to avoid sharing cache lines between 2736 * different queues. 2737 */ 2738 reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); 2739 2740 /* 2741 * Allocate here so if allocation fails we can bail out early 2742 * before starting the BA session in the firmware 2743 */ 2744 baid_data = kzalloc(sizeof(*baid_data) + 2745 mvm->trans->num_rx_queues * 2746 reorder_buf_size, 2747 GFP_KERNEL); 2748 if (!baid_data) 2749 return -ENOMEM; 2750 2751 /* 2752 * This division is why we need the above BUILD_BUG_ON(), 2753 * if that doesn't hold then this will not be right. 2754 */ 2755 baid_data->entries_per_queue = 2756 reorder_buf_size / sizeof(baid_data->entries[0]); 2757 } 2758 2759 if (iwl_mvm_has_new_rx_api(mvm) && !start) { 2760 baid = mvm_sta->tid_to_baid[tid]; 2761 } else { 2762 /* we don't really need it in this case */ 2763 baid = -1; 2764 } 2765 2766 /* Don't send command to remove (start=0) BAID during restart */ 2767 if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 2768 baid = iwl_mvm_fw_baid_op(mvm, mvm_sta, start, tid, ssn, buf_size, 2769 baid); 2770 2771 if (baid < 0) { 2772 ret = baid; 2773 goto out_free; 2774 } 2775 2776 if (start) { 2777 mvm->rx_ba_sessions++; 2778 2779 if (!iwl_mvm_has_new_rx_api(mvm)) 2780 return 0; 2781 2782 baid_data->baid = baid; 2783 baid_data->timeout = timeout; 2784 baid_data->last_rx = jiffies; 2785 baid_data->rcu_ptr = &mvm->baid_map[baid]; 2786 timer_setup(&baid_data->session_timer, 2787 iwl_mvm_rx_agg_session_expired, 0); 2788 baid_data->mvm = mvm; 2789 baid_data->tid = tid; 2790 baid_data->sta_id = mvm_sta->sta_id; 2791 2792 mvm_sta->tid_to_baid[tid] = baid; 2793 if (timeout) 2794 mod_timer(&baid_data->session_timer, 2795 TU_TO_EXP_TIME(timeout * 2)); 2796 2797 iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); 2798 /* 2799 * protect the BA data with RCU to cover a case where our 2800 * internal RX sync mechanism will timeout (not that it's 2801 * supposed to happen) and we will free the session data while 2802 * RX is being processed in parallel 2803 */ 2804 IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n", 2805 mvm_sta->sta_id, tid, baid); 2806 WARN_ON(rcu_access_pointer(mvm->baid_map[baid])); 2807 rcu_assign_pointer(mvm->baid_map[baid], baid_data); 2808 } else { 2809 baid = mvm_sta->tid_to_baid[tid]; 2810 2811 if (mvm->rx_ba_sessions > 0) 2812 /* check that restart flow didn't zero the counter */ 2813 mvm->rx_ba_sessions--; 2814 if (!iwl_mvm_has_new_rx_api(mvm)) 2815 return 0; 2816 2817 if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID)) 2818 return -EINVAL; 2819 2820 baid_data = rcu_access_pointer(mvm->baid_map[baid]); 2821 if (WARN_ON(!baid_data)) 2822 return -EINVAL; 2823 2824 /* synchronize all rx queues so we can safely delete */ 2825 iwl_mvm_free_reorder(mvm, baid_data); 2826 del_timer_sync(&baid_data->session_timer); 2827 RCU_INIT_POINTER(mvm->baid_map[baid], NULL); 2828 kfree_rcu(baid_data, rcu_head); 2829 IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid); 2830 2831 /* 2832 * After we've deleted it, do another queue sync 2833 * so if an IWL_MVM_RXQ_NSSN_SYNC was concurrently 2834 * running it won't find a new session in the old 2835 * BAID. It can find the NULL pointer for the BAID, 2836 * but we must not have it find a different session. 2837 */ 2838 iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, 2839 true, NULL, 0); 2840 } 2841 return 0; 2842 2843 out_free: 2844 kfree(baid_data); 2845 return ret; 2846 } 2847 2848 int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, 2849 int tid, u8 queue, bool start) 2850 { 2851 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2852 struct iwl_mvm_add_sta_cmd cmd = {}; 2853 int ret; 2854 u32 status; 2855 2856 lockdep_assert_held(&mvm->mutex); 2857 2858 if (start) { 2859 mvm_sta->tfd_queue_msk |= BIT(queue); 2860 mvm_sta->tid_disable_agg &= ~BIT(tid); 2861 } else { 2862 /* In DQA-mode the queue isn't removed on agg termination */ 2863 mvm_sta->tid_disable_agg |= BIT(tid); 2864 } 2865 2866 cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); 2867 cmd.sta_id = mvm_sta->sta_id; 2868 cmd.add_modify = STA_MODE_MODIFY; 2869 if (!iwl_mvm_has_new_tx_api(mvm)) 2870 cmd.modify_mask = STA_MODIFY_QUEUES; 2871 cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX; 2872 cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk); 2873 cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg); 2874 2875 status = ADD_STA_SUCCESS; 2876 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA, 2877 iwl_mvm_add_sta_cmd_size(mvm), 2878 &cmd, &status); 2879 if (ret) 2880 return ret; 2881 2882 switch (status & IWL_ADD_STA_STATUS_MASK) { 2883 case ADD_STA_SUCCESS: 2884 break; 2885 default: 2886 ret = -EIO; 2887 IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n", 2888 start ? "start" : "stopp", status); 2889 break; 2890 } 2891 2892 return ret; 2893 } 2894 2895 const u8 tid_to_mac80211_ac[] = { 2896 IEEE80211_AC_BE, 2897 IEEE80211_AC_BK, 2898 IEEE80211_AC_BK, 2899 IEEE80211_AC_BE, 2900 IEEE80211_AC_VI, 2901 IEEE80211_AC_VI, 2902 IEEE80211_AC_VO, 2903 IEEE80211_AC_VO, 2904 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */ 2905 }; 2906 2907 static const u8 tid_to_ucode_ac[] = { 2908 AC_BE, 2909 AC_BK, 2910 AC_BK, 2911 AC_BE, 2912 AC_VI, 2913 AC_VI, 2914 AC_VO, 2915 AC_VO, 2916 }; 2917 2918 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2919 struct ieee80211_sta *sta, u16 tid, u16 *ssn) 2920 { 2921 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2922 struct iwl_mvm_tid_data *tid_data; 2923 u16 normalized_ssn; 2924 u16 txq_id; 2925 int ret; 2926 2927 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) 2928 return -EINVAL; 2929 2930 if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED && 2931 mvmsta->tid_data[tid].state != IWL_AGG_OFF) { 2932 IWL_ERR(mvm, 2933 "Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n", 2934 mvmsta->tid_data[tid].state); 2935 return -ENXIO; 2936 } 2937 2938 lockdep_assert_held(&mvm->mutex); 2939 2940 if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE && 2941 iwl_mvm_has_new_tx_api(mvm)) { 2942 u8 ac = tid_to_mac80211_ac[tid]; 2943 2944 ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid); 2945 if (ret) 2946 return ret; 2947 } 2948 2949 spin_lock_bh(&mvmsta->lock); 2950 2951 /* 2952 * Note the possible cases: 2953 * 1. An enabled TXQ - TXQ needs to become agg'ed 2954 * 2. The TXQ hasn't yet been enabled, so find a free one and mark 2955 * it as reserved 2956 */ 2957 txq_id = mvmsta->tid_data[tid].txq_id; 2958 if (txq_id == IWL_MVM_INVALID_QUEUE) { 2959 ret = iwl_mvm_find_free_queue(mvm, mvmsta->sta_id, 2960 IWL_MVM_DQA_MIN_DATA_QUEUE, 2961 IWL_MVM_DQA_MAX_DATA_QUEUE); 2962 if (ret < 0) { 2963 IWL_ERR(mvm, "Failed to allocate agg queue\n"); 2964 goto out; 2965 } 2966 2967 txq_id = ret; 2968 2969 /* TXQ hasn't yet been enabled, so mark it only as reserved */ 2970 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED; 2971 } else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) { 2972 ret = -ENXIO; 2973 IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n", 2974 tid, IWL_MAX_HW_QUEUES - 1); 2975 goto out; 2976 2977 } else if (unlikely(mvm->queue_info[txq_id].status == 2978 IWL_MVM_QUEUE_SHARED)) { 2979 ret = -ENXIO; 2980 IWL_DEBUG_TX_QUEUES(mvm, 2981 "Can't start tid %d agg on shared queue!\n", 2982 tid); 2983 goto out; 2984 } 2985 2986 IWL_DEBUG_TX_QUEUES(mvm, 2987 "AGG for tid %d will be on queue #%d\n", 2988 tid, txq_id); 2989 2990 tid_data = &mvmsta->tid_data[tid]; 2991 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 2992 tid_data->txq_id = txq_id; 2993 *ssn = tid_data->ssn; 2994 2995 IWL_DEBUG_TX_QUEUES(mvm, 2996 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n", 2997 mvmsta->sta_id, tid, txq_id, tid_data->ssn, 2998 tid_data->next_reclaimed); 2999 3000 /* 3001 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 3002 * to align the wrap around of ssn so we compare relevant values. 3003 */ 3004 normalized_ssn = tid_data->ssn; 3005 if (mvm->trans->trans_cfg->gen2) 3006 normalized_ssn &= 0xff; 3007 3008 if (normalized_ssn == tid_data->next_reclaimed) { 3009 tid_data->state = IWL_AGG_STARTING; 3010 ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; 3011 } else { 3012 tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA; 3013 ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA; 3014 } 3015 3016 out: 3017 spin_unlock_bh(&mvmsta->lock); 3018 3019 return ret; 3020 } 3021 3022 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3023 struct ieee80211_sta *sta, u16 tid, u16 buf_size, 3024 bool amsdu) 3025 { 3026 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3027 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3028 unsigned int wdg_timeout = 3029 iwl_mvm_get_wd_timeout(mvm, vif, sta->tdls, false); 3030 int queue, ret; 3031 bool alloc_queue = true; 3032 enum iwl_mvm_queue_status queue_status; 3033 u16 ssn; 3034 3035 struct iwl_trans_txq_scd_cfg cfg = { 3036 .sta_id = mvmsta->sta_id, 3037 .tid = tid, 3038 .frame_limit = buf_size, 3039 .aggregate = true, 3040 }; 3041 3042 /* 3043 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation 3044 * manager, so this function should never be called in this case. 3045 */ 3046 if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm))) 3047 return -EINVAL; 3048 3049 BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) 3050 != IWL_MAX_TID_COUNT); 3051 3052 spin_lock_bh(&mvmsta->lock); 3053 ssn = tid_data->ssn; 3054 queue = tid_data->txq_id; 3055 tid_data->state = IWL_AGG_ON; 3056 mvmsta->agg_tids |= BIT(tid); 3057 tid_data->ssn = 0xffff; 3058 tid_data->amsdu_in_ampdu_allowed = amsdu; 3059 spin_unlock_bh(&mvmsta->lock); 3060 3061 if (iwl_mvm_has_new_tx_api(mvm)) { 3062 /* 3063 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() 3064 * would have failed, so if we are here there is no need to 3065 * allocate a queue. 3066 * However, if aggregation size is different than the default 3067 * size, the scheduler should be reconfigured. 3068 * We cannot do this with the new TX API, so return unsupported 3069 * for now, until it will be offloaded to firmware.. 3070 * Note that if SCD default value changes - this condition 3071 * should be updated as well. 3072 */ 3073 if (buf_size < IWL_FRAME_LIMIT) 3074 return -ENOTSUPP; 3075 3076 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3077 if (ret) 3078 return -EIO; 3079 goto out; 3080 } 3081 3082 cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; 3083 3084 queue_status = mvm->queue_info[queue].status; 3085 3086 /* Maybe there is no need to even alloc a queue... */ 3087 if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY) 3088 alloc_queue = false; 3089 3090 /* 3091 * Only reconfig the SCD for the queue if the window size has 3092 * changed from current (become smaller) 3093 */ 3094 if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { 3095 /* 3096 * If reconfiguring an existing queue, it first must be 3097 * drained 3098 */ 3099 ret = iwl_trans_wait_tx_queues_empty(mvm->trans, 3100 BIT(queue)); 3101 if (ret) { 3102 IWL_ERR(mvm, 3103 "Error draining queue before reconfig\n"); 3104 return ret; 3105 } 3106 3107 ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo, 3108 mvmsta->sta_id, tid, 3109 buf_size, ssn); 3110 if (ret) { 3111 IWL_ERR(mvm, 3112 "Error reconfiguring TXQ #%d\n", queue); 3113 return ret; 3114 } 3115 } 3116 3117 if (alloc_queue) 3118 iwl_mvm_enable_txq(mvm, sta, queue, ssn, 3119 &cfg, wdg_timeout); 3120 3121 /* Send ADD_STA command to enable aggs only if the queue isn't shared */ 3122 if (queue_status != IWL_MVM_QUEUE_SHARED) { 3123 ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); 3124 if (ret) 3125 return -EIO; 3126 } 3127 3128 /* No need to mark as reserved */ 3129 mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY; 3130 3131 out: 3132 /* 3133 * Even though in theory the peer could have different 3134 * aggregation reorder buffer sizes for different sessions, 3135 * our ucode doesn't allow for that and has a global limit 3136 * for each station. Therefore, use the minimum of all the 3137 * aggregation sessions and our default value. 3138 */ 3139 mvmsta->max_agg_bufsize = 3140 min(mvmsta->max_agg_bufsize, buf_size); 3141 mvmsta->lq_sta.rs_drv.lq.agg_frame_cnt_limit = mvmsta->max_agg_bufsize; 3142 3143 IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n", 3144 sta->addr, tid); 3145 3146 return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq); 3147 } 3148 3149 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm, 3150 struct iwl_mvm_sta *mvmsta, 3151 struct iwl_mvm_tid_data *tid_data) 3152 { 3153 u16 txq_id = tid_data->txq_id; 3154 3155 lockdep_assert_held(&mvm->mutex); 3156 3157 if (iwl_mvm_has_new_tx_api(mvm)) 3158 return; 3159 3160 /* 3161 * The TXQ is marked as reserved only if no traffic came through yet 3162 * This means no traffic has been sent on this TID (agg'd or not), so 3163 * we no longer have use for the queue. Since it hasn't even been 3164 * allocated through iwl_mvm_enable_txq, so we can just mark it back as 3165 * free. 3166 */ 3167 if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) { 3168 mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE; 3169 tid_data->txq_id = IWL_MVM_INVALID_QUEUE; 3170 } 3171 } 3172 3173 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3174 struct ieee80211_sta *sta, u16 tid) 3175 { 3176 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3177 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3178 u16 txq_id; 3179 int err; 3180 3181 /* 3182 * If mac80211 is cleaning its state, then say that we finished since 3183 * our state has been cleared anyway. 3184 */ 3185 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 3186 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3187 return 0; 3188 } 3189 3190 spin_lock_bh(&mvmsta->lock); 3191 3192 txq_id = tid_data->txq_id; 3193 3194 IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n", 3195 mvmsta->sta_id, tid, txq_id, tid_data->state); 3196 3197 mvmsta->agg_tids &= ~BIT(tid); 3198 3199 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3200 3201 switch (tid_data->state) { 3202 case IWL_AGG_ON: 3203 tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 3204 3205 IWL_DEBUG_TX_QUEUES(mvm, 3206 "ssn = %d, next_recl = %d\n", 3207 tid_data->ssn, tid_data->next_reclaimed); 3208 3209 tid_data->ssn = 0xffff; 3210 tid_data->state = IWL_AGG_OFF; 3211 spin_unlock_bh(&mvmsta->lock); 3212 3213 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3214 3215 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3216 return 0; 3217 case IWL_AGG_STARTING: 3218 case IWL_EMPTYING_HW_QUEUE_ADDBA: 3219 /* 3220 * The agg session has been stopped before it was set up. This 3221 * can happen when the AddBA timer times out for example. 3222 */ 3223 3224 /* No barriers since we are under mutex */ 3225 lockdep_assert_held(&mvm->mutex); 3226 3227 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 3228 tid_data->state = IWL_AGG_OFF; 3229 err = 0; 3230 break; 3231 default: 3232 IWL_ERR(mvm, 3233 "Stopping AGG while state not ON or starting for %d on %d (%d)\n", 3234 mvmsta->sta_id, tid, tid_data->state); 3235 IWL_ERR(mvm, 3236 "\ttid_data->txq_id = %d\n", tid_data->txq_id); 3237 err = -EINVAL; 3238 } 3239 3240 spin_unlock_bh(&mvmsta->lock); 3241 3242 return err; 3243 } 3244 3245 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3246 struct ieee80211_sta *sta, u16 tid) 3247 { 3248 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3249 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 3250 u16 txq_id; 3251 enum iwl_mvm_agg_state old_state; 3252 3253 /* 3254 * First set the agg state to OFF to avoid calling 3255 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty. 3256 */ 3257 spin_lock_bh(&mvmsta->lock); 3258 txq_id = tid_data->txq_id; 3259 IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n", 3260 mvmsta->sta_id, tid, txq_id, tid_data->state); 3261 old_state = tid_data->state; 3262 tid_data->state = IWL_AGG_OFF; 3263 mvmsta->agg_tids &= ~BIT(tid); 3264 spin_unlock_bh(&mvmsta->lock); 3265 3266 iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data); 3267 3268 if (old_state >= IWL_AGG_ON) { 3269 iwl_mvm_drain_sta(mvm, mvmsta, true); 3270 3271 if (iwl_mvm_has_new_tx_api(mvm)) { 3272 if (iwl_mvm_flush_sta_tids(mvm, mvmsta->sta_id, 3273 BIT(tid))) 3274 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3275 iwl_trans_wait_txq_empty(mvm->trans, txq_id); 3276 } else { 3277 if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id))) 3278 IWL_ERR(mvm, "Couldn't flush the AGG queue\n"); 3279 iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id)); 3280 } 3281 3282 iwl_mvm_drain_sta(mvm, mvmsta, false); 3283 3284 iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false); 3285 } 3286 3287 return 0; 3288 } 3289 3290 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm) 3291 { 3292 int i, max = -1, max_offs = -1; 3293 3294 lockdep_assert_held(&mvm->mutex); 3295 3296 /* Pick the unused key offset with the highest 'deleted' 3297 * counter. Every time a key is deleted, all the counters 3298 * are incremented and the one that was just deleted is 3299 * reset to zero. Thus, the highest counter is the one 3300 * that was deleted longest ago. Pick that one. 3301 */ 3302 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3303 if (test_bit(i, mvm->fw_key_table)) 3304 continue; 3305 if (mvm->fw_key_deleted[i] > max) { 3306 max = mvm->fw_key_deleted[i]; 3307 max_offs = i; 3308 } 3309 } 3310 3311 if (max_offs < 0) 3312 return STA_KEY_IDX_INVALID; 3313 3314 return max_offs; 3315 } 3316 3317 static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm, 3318 struct ieee80211_vif *vif, 3319 struct ieee80211_sta *sta) 3320 { 3321 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3322 3323 if (sta) 3324 return iwl_mvm_sta_from_mac80211(sta); 3325 3326 /* 3327 * The device expects GTKs for station interfaces to be 3328 * installed as GTKs for the AP station. If we have no 3329 * station ID, then use AP's station ID. 3330 */ 3331 if (vif->type == NL80211_IFTYPE_STATION && 3332 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3333 u8 sta_id = mvmvif->ap_sta_id; 3334 3335 sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id], 3336 lockdep_is_held(&mvm->mutex)); 3337 3338 /* 3339 * It is possible that the 'sta' parameter is NULL, 3340 * for example when a GTK is removed - the sta_id will then 3341 * be the AP ID, and no station was passed by mac80211. 3342 */ 3343 if (IS_ERR_OR_NULL(sta)) 3344 return NULL; 3345 3346 return iwl_mvm_sta_from_mac80211(sta); 3347 } 3348 3349 return NULL; 3350 } 3351 3352 static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len) 3353 { 3354 int i; 3355 3356 for (i = len - 1; i >= 0; i--) { 3357 if (pn1[i] > pn2[i]) 3358 return 1; 3359 if (pn1[i] < pn2[i]) 3360 return -1; 3361 } 3362 3363 return 0; 3364 } 3365 3366 static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm, 3367 u32 sta_id, 3368 struct ieee80211_key_conf *key, bool mcast, 3369 u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags, 3370 u8 key_offset, bool mfp) 3371 { 3372 union { 3373 struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1; 3374 struct iwl_mvm_add_sta_key_cmd cmd; 3375 } u = {}; 3376 __le16 key_flags; 3377 int ret; 3378 u32 status; 3379 u16 keyidx; 3380 u64 pn = 0; 3381 int i, size; 3382 bool new_api = fw_has_api(&mvm->fw->ucode_capa, 3383 IWL_UCODE_TLV_API_TKIP_MIC_KEYS); 3384 int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY, 3385 new_api ? 2 : 1); 3386 3387 if (sta_id == IWL_MVM_INVALID_STA) 3388 return -EINVAL; 3389 3390 keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) & 3391 STA_KEY_FLG_KEYID_MSK; 3392 key_flags = cpu_to_le16(keyidx); 3393 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP); 3394 3395 switch (key->cipher) { 3396 case WLAN_CIPHER_SUITE_TKIP: 3397 key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP); 3398 if (api_ver >= 2) { 3399 memcpy((void *)&u.cmd.tx_mic_key, 3400 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], 3401 IWL_MIC_KEY_SIZE); 3402 3403 memcpy((void *)&u.cmd.rx_mic_key, 3404 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], 3405 IWL_MIC_KEY_SIZE); 3406 pn = atomic64_read(&key->tx_pn); 3407 3408 } else { 3409 u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32; 3410 for (i = 0; i < 5; i++) 3411 u.cmd_v1.tkip_rx_ttak[i] = 3412 cpu_to_le16(tkip_p1k[i]); 3413 } 3414 memcpy(u.cmd.common.key, key->key, key->keylen); 3415 break; 3416 case WLAN_CIPHER_SUITE_CCMP: 3417 key_flags |= cpu_to_le16(STA_KEY_FLG_CCM); 3418 memcpy(u.cmd.common.key, key->key, key->keylen); 3419 if (api_ver >= 2) 3420 pn = atomic64_read(&key->tx_pn); 3421 break; 3422 case WLAN_CIPHER_SUITE_WEP104: 3423 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES); 3424 fallthrough; 3425 case WLAN_CIPHER_SUITE_WEP40: 3426 key_flags |= cpu_to_le16(STA_KEY_FLG_WEP); 3427 memcpy(u.cmd.common.key + 3, key->key, key->keylen); 3428 break; 3429 case WLAN_CIPHER_SUITE_GCMP_256: 3430 key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES); 3431 fallthrough; 3432 case WLAN_CIPHER_SUITE_GCMP: 3433 key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP); 3434 memcpy(u.cmd.common.key, key->key, key->keylen); 3435 if (api_ver >= 2) 3436 pn = atomic64_read(&key->tx_pn); 3437 break; 3438 default: 3439 key_flags |= cpu_to_le16(STA_KEY_FLG_EXT); 3440 memcpy(u.cmd.common.key, key->key, key->keylen); 3441 } 3442 3443 if (mcast) 3444 key_flags |= cpu_to_le16(STA_KEY_MULTICAST); 3445 if (mfp) 3446 key_flags |= cpu_to_le16(STA_KEY_MFP); 3447 3448 u.cmd.common.key_offset = key_offset; 3449 u.cmd.common.key_flags = key_flags; 3450 u.cmd.common.sta_id = sta_id; 3451 3452 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 3453 i = 0; 3454 else 3455 i = -1; 3456 3457 for (; i < IEEE80211_NUM_TIDS; i++) { 3458 struct ieee80211_key_seq seq = {}; 3459 u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn; 3460 int rx_pn_len = 8; 3461 /* there's a hole at 2/3 in FW format depending on version */ 3462 int hole = api_ver >= 3 ? 0 : 2; 3463 3464 ieee80211_get_key_rx_seq(key, i, &seq); 3465 3466 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { 3467 rx_pn[0] = seq.tkip.iv16; 3468 rx_pn[1] = seq.tkip.iv16 >> 8; 3469 rx_pn[2 + hole] = seq.tkip.iv32; 3470 rx_pn[3 + hole] = seq.tkip.iv32 >> 8; 3471 rx_pn[4 + hole] = seq.tkip.iv32 >> 16; 3472 rx_pn[5 + hole] = seq.tkip.iv32 >> 24; 3473 } else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) { 3474 rx_pn = seq.hw.seq; 3475 rx_pn_len = seq.hw.seq_len; 3476 } else { 3477 rx_pn[0] = seq.ccmp.pn[0]; 3478 rx_pn[1] = seq.ccmp.pn[1]; 3479 rx_pn[2 + hole] = seq.ccmp.pn[2]; 3480 rx_pn[3 + hole] = seq.ccmp.pn[3]; 3481 rx_pn[4 + hole] = seq.ccmp.pn[4]; 3482 rx_pn[5 + hole] = seq.ccmp.pn[5]; 3483 } 3484 3485 if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt, 3486 rx_pn_len) > 0) 3487 memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn, 3488 rx_pn_len); 3489 } 3490 3491 if (api_ver >= 2) { 3492 u.cmd.transmit_seq_cnt = cpu_to_le64(pn); 3493 size = sizeof(u.cmd); 3494 } else { 3495 size = sizeof(u.cmd_v1); 3496 } 3497 3498 status = ADD_STA_SUCCESS; 3499 if (cmd_flags & CMD_ASYNC) 3500 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size, 3501 &u.cmd); 3502 else 3503 ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, 3504 &u.cmd, &status); 3505 3506 switch (status) { 3507 case ADD_STA_SUCCESS: 3508 IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n"); 3509 break; 3510 default: 3511 ret = -EIO; 3512 IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n"); 3513 break; 3514 } 3515 3516 return ret; 3517 } 3518 3519 static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm, 3520 struct ieee80211_key_conf *keyconf, 3521 u8 sta_id, bool remove_key) 3522 { 3523 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {}; 3524 3525 /* verify the key details match the required command's expectations */ 3526 if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) || 3527 (keyconf->keyidx != 4 && keyconf->keyidx != 5 && 3528 keyconf->keyidx != 6 && keyconf->keyidx != 7) || 3529 (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC && 3530 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 && 3531 keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256))) 3532 return -EINVAL; 3533 3534 if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) && 3535 keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC)) 3536 return -EINVAL; 3537 3538 igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx); 3539 igtk_cmd.sta_id = cpu_to_le32(sta_id); 3540 3541 if (remove_key) { 3542 /* This is a valid situation for IGTK */ 3543 if (sta_id == IWL_MVM_INVALID_STA) 3544 return 0; 3545 3546 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID); 3547 } else { 3548 struct ieee80211_key_seq seq; 3549 const u8 *pn; 3550 3551 switch (keyconf->cipher) { 3552 case WLAN_CIPHER_SUITE_AES_CMAC: 3553 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM); 3554 break; 3555 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3556 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3557 igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP); 3558 break; 3559 default: 3560 return -EINVAL; 3561 } 3562 3563 memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen); 3564 if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3565 igtk_cmd.ctrl_flags |= 3566 cpu_to_le32(STA_KEY_FLG_KEY_32BYTES); 3567 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3568 pn = seq.aes_cmac.pn; 3569 igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) | 3570 ((u64) pn[4] << 8) | 3571 ((u64) pn[3] << 16) | 3572 ((u64) pn[2] << 24) | 3573 ((u64) pn[1] << 32) | 3574 ((u64) pn[0] << 40)); 3575 } 3576 3577 IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n", 3578 remove_key ? "removing" : "installing", 3579 keyconf->keyidx >= 6 ? "B" : "", 3580 keyconf->keyidx, igtk_cmd.sta_id); 3581 3582 if (!iwl_mvm_has_new_rx_api(mvm)) { 3583 struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = { 3584 .ctrl_flags = igtk_cmd.ctrl_flags, 3585 .key_id = igtk_cmd.key_id, 3586 .sta_id = igtk_cmd.sta_id, 3587 .receive_seq_cnt = igtk_cmd.receive_seq_cnt 3588 }; 3589 3590 memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk, 3591 ARRAY_SIZE(igtk_cmd_v1.igtk)); 3592 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3593 sizeof(igtk_cmd_v1), &igtk_cmd_v1); 3594 } 3595 return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0, 3596 sizeof(igtk_cmd), &igtk_cmd); 3597 } 3598 3599 3600 static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm, 3601 struct ieee80211_vif *vif, 3602 struct ieee80211_sta *sta) 3603 { 3604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3605 3606 if (sta) 3607 return sta->addr; 3608 3609 if (vif->type == NL80211_IFTYPE_STATION && 3610 mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 3611 u8 sta_id = mvmvif->ap_sta_id; 3612 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], 3613 lockdep_is_held(&mvm->mutex)); 3614 return sta->addr; 3615 } 3616 3617 3618 return NULL; 3619 } 3620 3621 static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3622 struct ieee80211_vif *vif, 3623 struct ieee80211_sta *sta, 3624 struct ieee80211_key_conf *keyconf, 3625 u8 key_offset, 3626 bool mcast) 3627 { 3628 const u8 *addr; 3629 struct ieee80211_key_seq seq; 3630 u16 p1k[5]; 3631 u32 sta_id; 3632 bool mfp = false; 3633 3634 if (sta) { 3635 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3636 3637 sta_id = mvm_sta->sta_id; 3638 mfp = sta->mfp; 3639 } else if (vif->type == NL80211_IFTYPE_AP && 3640 !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 3641 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3642 3643 sta_id = mvmvif->mcast_sta.sta_id; 3644 } else { 3645 IWL_ERR(mvm, "Failed to find station id\n"); 3646 return -EINVAL; 3647 } 3648 3649 if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) { 3650 addr = iwl_mvm_get_mac_addr(mvm, vif, sta); 3651 /* get phase 1 key from mac80211 */ 3652 ieee80211_get_key_rx_seq(keyconf, 0, &seq); 3653 ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); 3654 3655 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3656 seq.tkip.iv32, p1k, 0, key_offset, 3657 mfp); 3658 } 3659 3660 return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast, 3661 0, NULL, 0, key_offset, mfp); 3662 } 3663 3664 int iwl_mvm_set_sta_key(struct iwl_mvm *mvm, 3665 struct ieee80211_vif *vif, 3666 struct ieee80211_sta *sta, 3667 struct ieee80211_key_conf *keyconf, 3668 u8 key_offset) 3669 { 3670 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3671 struct iwl_mvm_sta *mvm_sta; 3672 u8 sta_id = IWL_MVM_INVALID_STA; 3673 int ret; 3674 static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0}; 3675 3676 lockdep_assert_held(&mvm->mutex); 3677 3678 if (vif->type != NL80211_IFTYPE_AP || 3679 keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) { 3680 /* Get the station id from the mvm local station table */ 3681 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3682 if (!mvm_sta) { 3683 IWL_ERR(mvm, "Failed to find station\n"); 3684 return -EINVAL; 3685 } 3686 sta_id = mvm_sta->sta_id; 3687 3688 /* 3689 * It is possible that the 'sta' parameter is NULL, and thus 3690 * there is a need to retrieve the sta from the local station 3691 * table. 3692 */ 3693 if (!sta) { 3694 sta = rcu_dereference_protected( 3695 mvm->fw_id_to_mac_id[sta_id], 3696 lockdep_is_held(&mvm->mutex)); 3697 if (IS_ERR_OR_NULL(sta)) { 3698 IWL_ERR(mvm, "Invalid station id\n"); 3699 return -EINVAL; 3700 } 3701 } 3702 3703 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif)) 3704 return -EINVAL; 3705 } else { 3706 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3707 3708 sta_id = mvmvif->mcast_sta.sta_id; 3709 } 3710 3711 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3712 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3713 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) { 3714 ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false); 3715 goto end; 3716 } 3717 3718 /* If the key_offset is not pre-assigned, we need to find a 3719 * new offset to use. In normal cases, the offset is not 3720 * pre-assigned, but during HW_RESTART we want to reuse the 3721 * same indices, so we pass them when this function is called. 3722 * 3723 * In D3 entry, we need to hardcoded the indices (because the 3724 * firmware hardcodes the PTK offset to 0). In this case, we 3725 * need to make sure we don't overwrite the hw_key_idx in the 3726 * keyconf structure, because otherwise we cannot configure 3727 * the original ones back when resuming. 3728 */ 3729 if (key_offset == STA_KEY_IDX_INVALID) { 3730 key_offset = iwl_mvm_set_fw_key_idx(mvm); 3731 if (key_offset == STA_KEY_IDX_INVALID) 3732 return -ENOSPC; 3733 keyconf->hw_key_idx = key_offset; 3734 } 3735 3736 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast); 3737 if (ret) 3738 goto end; 3739 3740 /* 3741 * For WEP, the same key is used for multicast and unicast. Upload it 3742 * again, using the same key offset, and now pointing the other one 3743 * to the same key slot (offset). 3744 * If this fails, remove the original as well. 3745 */ 3746 if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3747 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) && 3748 sta) { 3749 ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, 3750 key_offset, !mcast); 3751 if (ret) { 3752 __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3753 goto end; 3754 } 3755 } 3756 3757 __set_bit(key_offset, mvm->fw_key_table); 3758 3759 end: 3760 IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", 3761 keyconf->cipher, keyconf->keylen, keyconf->keyidx, 3762 sta ? sta->addr : zero_addr, ret); 3763 return ret; 3764 } 3765 3766 int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, 3767 struct ieee80211_vif *vif, 3768 struct ieee80211_sta *sta, 3769 struct ieee80211_key_conf *keyconf) 3770 { 3771 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3772 struct iwl_mvm_sta *mvm_sta; 3773 u8 sta_id = IWL_MVM_INVALID_STA; 3774 int ret, i; 3775 3776 lockdep_assert_held(&mvm->mutex); 3777 3778 /* Get the station from the mvm local station table */ 3779 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3780 if (mvm_sta) 3781 sta_id = mvm_sta->sta_id; 3782 else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast) 3783 sta_id = iwl_mvm_vif_from_mac80211(vif)->mcast_sta.sta_id; 3784 3785 3786 IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n", 3787 keyconf->keyidx, sta_id); 3788 3789 if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3790 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3791 keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3792 return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true); 3793 3794 if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) { 3795 IWL_ERR(mvm, "offset %d not used in fw key table.\n", 3796 keyconf->hw_key_idx); 3797 return -ENOENT; 3798 } 3799 3800 /* track which key was deleted last */ 3801 for (i = 0; i < STA_KEY_MAX_NUM; i++) { 3802 if (mvm->fw_key_deleted[i] < U8_MAX) 3803 mvm->fw_key_deleted[i]++; 3804 } 3805 mvm->fw_key_deleted[keyconf->hw_key_idx] = 0; 3806 3807 if (sta && !mvm_sta) { 3808 IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n"); 3809 return 0; 3810 } 3811 3812 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast); 3813 if (ret) 3814 return ret; 3815 3816 /* delete WEP key twice to get rid of (now useless) offset */ 3817 if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 || 3818 keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) 3819 ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast); 3820 3821 return ret; 3822 } 3823 3824 void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm, 3825 struct ieee80211_vif *vif, 3826 struct ieee80211_key_conf *keyconf, 3827 struct ieee80211_sta *sta, u32 iv32, 3828 u16 *phase1key) 3829 { 3830 struct iwl_mvm_sta *mvm_sta; 3831 bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE); 3832 bool mfp = sta ? sta->mfp : false; 3833 3834 rcu_read_lock(); 3835 3836 mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta); 3837 if (WARN_ON_ONCE(!mvm_sta)) 3838 goto unlock; 3839 iwl_mvm_send_sta_key(mvm, mvm_sta->sta_id, keyconf, mcast, 3840 iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx, 3841 mfp); 3842 3843 unlock: 3844 rcu_read_unlock(); 3845 } 3846 3847 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm, 3848 struct ieee80211_sta *sta) 3849 { 3850 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3851 struct iwl_mvm_add_sta_cmd cmd = { 3852 .add_modify = STA_MODE_MODIFY, 3853 .sta_id = mvmsta->sta_id, 3854 .station_flags_msk = cpu_to_le32(STA_FLG_PS), 3855 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3856 }; 3857 int ret; 3858 3859 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3860 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3861 if (ret) 3862 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3863 } 3864 3865 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm, 3866 struct ieee80211_sta *sta, 3867 enum ieee80211_frame_release_type reason, 3868 u16 cnt, u16 tids, bool more_data, 3869 bool single_sta_queue) 3870 { 3871 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 3872 struct iwl_mvm_add_sta_cmd cmd = { 3873 .add_modify = STA_MODE_MODIFY, 3874 .sta_id = mvmsta->sta_id, 3875 .modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT, 3876 .sleep_tx_count = cpu_to_le16(cnt), 3877 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3878 }; 3879 int tid, ret; 3880 unsigned long _tids = tids; 3881 3882 /* convert TIDs to ACs - we don't support TSPEC so that's OK 3883 * Note that this field is reserved and unused by firmware not 3884 * supporting GO uAPSD, so it's safe to always do this. 3885 */ 3886 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) 3887 cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]); 3888 3889 /* If we're releasing frames from aggregation or dqa queues then check 3890 * if all the queues that we're releasing frames from, combined, have: 3891 * - more frames than the service period, in which case more_data 3892 * needs to be set 3893 * - fewer than 'cnt' frames, in which case we need to adjust the 3894 * firmware command (but do that unconditionally) 3895 */ 3896 if (single_sta_queue) { 3897 int remaining = cnt; 3898 int sleep_tx_count; 3899 3900 spin_lock_bh(&mvmsta->lock); 3901 for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) { 3902 struct iwl_mvm_tid_data *tid_data; 3903 u16 n_queued; 3904 3905 tid_data = &mvmsta->tid_data[tid]; 3906 3907 n_queued = iwl_mvm_tid_queued(mvm, tid_data); 3908 if (n_queued > remaining) { 3909 more_data = true; 3910 remaining = 0; 3911 break; 3912 } 3913 remaining -= n_queued; 3914 } 3915 sleep_tx_count = cnt - remaining; 3916 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) 3917 mvmsta->sleep_tx_count = sleep_tx_count; 3918 spin_unlock_bh(&mvmsta->lock); 3919 3920 cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count); 3921 if (WARN_ON(cnt - remaining == 0)) { 3922 ieee80211_sta_eosp(sta); 3923 return; 3924 } 3925 } 3926 3927 /* Note: this is ignored by firmware not supporting GO uAPSD */ 3928 if (more_data) 3929 cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA; 3930 3931 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) { 3932 mvmsta->next_status_eosp = true; 3933 cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL; 3934 } else { 3935 cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD; 3936 } 3937 3938 /* block the Tx queues until the FW updated the sleep Tx count */ 3939 iwl_trans_block_txq_ptrs(mvm->trans, true); 3940 3941 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, 3942 CMD_ASYNC | CMD_WANT_ASYNC_CALLBACK, 3943 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3944 if (ret) 3945 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3946 } 3947 3948 void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm, 3949 struct iwl_rx_cmd_buffer *rxb) 3950 { 3951 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3952 struct iwl_mvm_eosp_notification *notif = (void *)pkt->data; 3953 struct ieee80211_sta *sta; 3954 u32 sta_id = le32_to_cpu(notif->sta_id); 3955 3956 if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations)) 3957 return; 3958 3959 rcu_read_lock(); 3960 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); 3961 if (!IS_ERR_OR_NULL(sta)) 3962 ieee80211_sta_eosp(sta); 3963 rcu_read_unlock(); 3964 } 3965 3966 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm, 3967 struct iwl_mvm_sta *mvmsta, bool disable) 3968 { 3969 struct iwl_mvm_add_sta_cmd cmd = { 3970 .add_modify = STA_MODE_MODIFY, 3971 .sta_id = mvmsta->sta_id, 3972 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 3973 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 3974 .mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color), 3975 }; 3976 int ret; 3977 3978 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 3979 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 3980 if (ret) 3981 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 3982 } 3983 3984 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm, 3985 struct ieee80211_sta *sta, 3986 bool disable) 3987 { 3988 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3989 3990 spin_lock_bh(&mvm_sta->lock); 3991 3992 if (mvm_sta->disable_tx == disable) { 3993 spin_unlock_bh(&mvm_sta->lock); 3994 return; 3995 } 3996 3997 mvm_sta->disable_tx = disable; 3998 3999 /* 4000 * If sta PS state is handled by mac80211, tell it to start/stop 4001 * queuing tx for this station. 4002 */ 4003 if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS)) 4004 ieee80211_sta_block_awake(mvm->hw, sta, disable); 4005 4006 iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable); 4007 4008 spin_unlock_bh(&mvm_sta->lock); 4009 } 4010 4011 static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm, 4012 struct iwl_mvm_vif *mvmvif, 4013 struct iwl_mvm_int_sta *sta, 4014 bool disable) 4015 { 4016 u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color); 4017 struct iwl_mvm_add_sta_cmd cmd = { 4018 .add_modify = STA_MODE_MODIFY, 4019 .sta_id = sta->sta_id, 4020 .station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0, 4021 .station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX), 4022 .mac_id_n_color = cpu_to_le32(id), 4023 }; 4024 int ret; 4025 4026 ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC, 4027 iwl_mvm_add_sta_cmd_size(mvm), &cmd); 4028 if (ret) 4029 IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret); 4030 } 4031 4032 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm, 4033 struct iwl_mvm_vif *mvmvif, 4034 bool disable) 4035 { 4036 struct ieee80211_sta *sta; 4037 struct iwl_mvm_sta *mvm_sta; 4038 int i; 4039 4040 rcu_read_lock(); 4041 4042 /* Block/unblock all the stations of the given mvmvif */ 4043 for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) { 4044 sta = rcu_dereference(mvm->fw_id_to_mac_id[i]); 4045 if (IS_ERR_OR_NULL(sta)) 4046 continue; 4047 4048 mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4049 if (mvm_sta->mac_id_n_color != 4050 FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color)) 4051 continue; 4052 4053 iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable); 4054 } 4055 4056 rcu_read_unlock(); 4057 4058 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 4059 return; 4060 4061 /* Need to block/unblock also multicast station */ 4062 if (mvmvif->mcast_sta.sta_id != IWL_MVM_INVALID_STA) 4063 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4064 &mvmvif->mcast_sta, disable); 4065 4066 /* 4067 * Only unblock the broadcast station (FW blocks it for immediate 4068 * quiet, not the driver) 4069 */ 4070 if (!disable && mvmvif->bcast_sta.sta_id != IWL_MVM_INVALID_STA) 4071 iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif, 4072 &mvmvif->bcast_sta, disable); 4073 } 4074 4075 void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 4076 { 4077 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4078 struct iwl_mvm_sta *mvmsta; 4079 4080 rcu_read_lock(); 4081 4082 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id); 4083 4084 if (mvmsta) 4085 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true); 4086 4087 rcu_read_unlock(); 4088 } 4089 4090 u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data) 4091 { 4092 u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); 4093 4094 /* 4095 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need 4096 * to align the wrap around of ssn so we compare relevant values. 4097 */ 4098 if (mvm->trans->trans_cfg->gen2) 4099 sn &= 0xff; 4100 4101 return ieee80211_sn_sub(sn, tid_data->next_reclaimed); 4102 } 4103 4104 int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 4105 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher, 4106 u8 *key, u32 key_len) 4107 { 4108 int ret; 4109 u16 queue; 4110 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4111 struct ieee80211_key_conf *keyconf; 4112 4113 ret = iwl_mvm_allocate_int_sta(mvm, sta, 0, 4114 NL80211_IFTYPE_UNSPECIFIED, 4115 IWL_STA_LINK); 4116 if (ret) 4117 return ret; 4118 4119 ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color, 4120 addr, sta, &queue, 4121 IWL_MVM_TX_FIFO_BE); 4122 if (ret) 4123 goto out; 4124 4125 keyconf = kzalloc(sizeof(*keyconf) + key_len, GFP_KERNEL); 4126 if (!keyconf) { 4127 ret = -ENOBUFS; 4128 goto out; 4129 } 4130 4131 keyconf->cipher = cipher; 4132 memcpy(keyconf->key, key, key_len); 4133 keyconf->keylen = key_len; 4134 4135 ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false, 4136 0, NULL, 0, 0, true); 4137 kfree(keyconf); 4138 return 0; 4139 out: 4140 iwl_mvm_dealloc_int_sta(mvm, sta); 4141 return ret; 4142 } 4143 4144 void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm, 4145 struct ieee80211_vif *vif, 4146 u32 mac_id) 4147 { 4148 struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = { 4149 .mac_id = cpu_to_le32(mac_id), 4150 }; 4151 int ret; 4152 4153 ret = iwl_mvm_send_cmd_pdu(mvm, 4154 WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD), 4155 CMD_ASYNC, 4156 sizeof(cancel_channel_switch_cmd), 4157 &cancel_channel_switch_cmd); 4158 if (ret) 4159 IWL_ERR(mvm, "Failed to cancel the channel switch\n"); 4160 } 4161