1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH 5 * Copyright (C) 2015-2017 Intel Deutschland GmbH 6 */ 7 #include <net/mac80211.h> 8 9 #include "iwl-debug.h" 10 #include "iwl-io.h" 11 #include "iwl-prph.h" 12 #include "iwl-csr.h" 13 #include "mvm.h" 14 #include "fw/api/rs.h" 15 #include "fw/img.h" 16 17 /* 18 * Will return 0 even if the cmd failed when RFKILL is asserted unless 19 * CMD_WANT_SKB is set in cmd->flags. 20 */ 21 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) 22 { 23 int ret; 24 25 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 26 if (WARN_ON(mvm->d3_test_active)) 27 return -EIO; 28 #endif 29 30 /* 31 * Synchronous commands from this op-mode must hold 32 * the mutex, this ensures we don't try to send two 33 * (or more) synchronous commands at a time. 34 */ 35 if (!(cmd->flags & CMD_ASYNC)) 36 lockdep_assert_held(&mvm->mutex); 37 38 ret = iwl_trans_send_cmd(mvm->trans, cmd); 39 40 /* 41 * If the caller wants the SKB, then don't hide any problems, the 42 * caller might access the response buffer which will be NULL if 43 * the command failed. 44 */ 45 if (cmd->flags & CMD_WANT_SKB) 46 return ret; 47 48 /* 49 * Silently ignore failures if RFKILL is asserted or 50 * we are in suspend\resume process 51 */ 52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) 53 return 0; 54 return ret; 55 } 56 57 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, 58 u32 flags, u16 len, const void *data) 59 { 60 struct iwl_host_cmd cmd = { 61 .id = id, 62 .len = { len, }, 63 .data = { data, }, 64 .flags = flags, 65 }; 66 67 return iwl_mvm_send_cmd(mvm, &cmd); 68 } 69 70 /* 71 * We assume that the caller set the status to the success value 72 */ 73 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, 74 u32 *status) 75 { 76 struct iwl_rx_packet *pkt; 77 struct iwl_cmd_response *resp; 78 int ret, resp_len; 79 80 lockdep_assert_held(&mvm->mutex); 81 82 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) 83 if (WARN_ON(mvm->d3_test_active)) 84 return -EIO; 85 #endif 86 87 /* 88 * Only synchronous commands can wait for status, 89 * we use WANT_SKB so the caller can't. 90 */ 91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), 92 "cmd flags %x", cmd->flags)) 93 return -EINVAL; 94 95 cmd->flags |= CMD_WANT_SKB; 96 97 ret = iwl_trans_send_cmd(mvm->trans, cmd); 98 if (ret == -ERFKILL) { 99 /* 100 * The command failed because of RFKILL, don't update 101 * the status, leave it as success and return 0. 102 */ 103 return 0; 104 } else if (ret) { 105 return ret; 106 } 107 108 pkt = cmd->resp_pkt; 109 110 resp_len = iwl_rx_packet_payload_len(pkt); 111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 112 ret = -EIO; 113 goto out_free_resp; 114 } 115 116 resp = (void *)pkt->data; 117 *status = le32_to_cpu(resp->status); 118 out_free_resp: 119 iwl_free_resp(cmd); 120 return ret; 121 } 122 123 /* 124 * We assume that the caller set the status to the sucess value 125 */ 126 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, 127 const void *data, u32 *status) 128 { 129 struct iwl_host_cmd cmd = { 130 .id = id, 131 .len = { len, }, 132 .data = { data, }, 133 }; 134 135 return iwl_mvm_send_cmd_status(mvm, &cmd, status); 136 } 137 138 int iwl_mvm_legacy_hw_idx_to_mac80211_idx(u32 rate_n_flags, 139 enum nl80211_band band) 140 { 141 int format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; 142 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; 143 bool is_LB = band == NL80211_BAND_2GHZ; 144 145 if (format == RATE_MCS_LEGACY_OFDM_MSK) 146 return is_LB ? rate + IWL_FIRST_OFDM_RATE : 147 rate; 148 149 /* CCK is not allowed in HB */ 150 return is_LB ? rate : -1; 151 } 152 153 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, 154 enum nl80211_band band) 155 { 156 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK_V1; 157 int idx; 158 int band_offset = 0; 159 160 /* Legacy rate format, search for match in table */ 161 if (band != NL80211_BAND_2GHZ) 162 band_offset = IWL_FIRST_OFDM_RATE; 163 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) 164 if (iwl_fw_rate_idx_to_plcp(idx) == rate) 165 return idx - band_offset; 166 167 return -1; 168 } 169 170 u8 iwl_mvm_mac80211_idx_to_hwrate(const struct iwl_fw *fw, int rate_idx) 171 { 172 if (iwl_fw_lookup_cmd_ver(fw, TX_CMD, 0) > 8) 173 /* In the new rate legacy rates are indexed: 174 * 0 - 3 for CCK and 0 - 7 for OFDM. 175 */ 176 return (rate_idx >= IWL_FIRST_OFDM_RATE ? 177 rate_idx - IWL_FIRST_OFDM_RATE : 178 rate_idx); 179 180 return iwl_fw_rate_idx_to_plcp(rate_idx); 181 } 182 183 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) 184 { 185 static const u8 mac80211_ac_to_ucode_ac[] = { 186 AC_VO, 187 AC_VI, 188 AC_BE, 189 AC_BK 190 }; 191 192 return mac80211_ac_to_ucode_ac[ac]; 193 } 194 195 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 196 { 197 struct iwl_rx_packet *pkt = rxb_addr(rxb); 198 struct iwl_error_resp *err_resp = (void *)pkt->data; 199 200 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", 201 le32_to_cpu(err_resp->error_type), err_resp->cmd_id); 202 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", 203 le16_to_cpu(err_resp->bad_cmd_seq_num), 204 le32_to_cpu(err_resp->error_service)); 205 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", 206 le64_to_cpu(err_resp->timestamp)); 207 } 208 209 /* 210 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. 211 * The parameter should also be a combination of ANT_[ABC]. 212 */ 213 u8 first_antenna(u8 mask) 214 { 215 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ 216 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ 217 return BIT(0); 218 return BIT(ffs(mask) - 1); 219 } 220 221 #define MAX_ANT_NUM 2 222 /* 223 * Toggles between TX antennas to send the probe request on. 224 * Receives the bitmask of valid TX antennas and the *index* used 225 * for the last TX, and returns the next valid *index* to use. 226 * In order to set it in the tx_cmd, must do BIT(idx). 227 */ 228 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) 229 { 230 u8 ind = last_idx; 231 int i; 232 233 for (i = 0; i < MAX_ANT_NUM; i++) { 234 ind = (ind + 1) % MAX_ANT_NUM; 235 if (valid & BIT(ind)) 236 return ind; 237 } 238 239 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); 240 return last_idx; 241 } 242 243 /** 244 * iwl_mvm_send_lq_cmd() - Send link quality command 245 * @mvm: Driver data. 246 * @lq: Link quality command to send. 247 * 248 * The link quality command is sent as the last step of station creation. 249 * This is the special case in which init is set and we call a callback in 250 * this case to clear the state indicating that station creation is in 251 * progress. 252 * 253 * Returns: an error code indicating success or failure 254 */ 255 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq) 256 { 257 struct iwl_host_cmd cmd = { 258 .id = LQ_CMD, 259 .len = { sizeof(struct iwl_lq_cmd), }, 260 .flags = CMD_ASYNC, 261 .data = { lq, }, 262 }; 263 264 if (WARN_ON(lq->sta_id == IWL_INVALID_STA || 265 iwl_mvm_has_tlc_offload(mvm))) 266 return -EINVAL; 267 268 return iwl_mvm_send_cmd(mvm, &cmd); 269 } 270 271 /** 272 * iwl_mvm_update_smps - Get a request to change the SMPS mode 273 * @mvm: Driver data. 274 * @vif: Pointer to the ieee80211_vif structure 275 * @req_type: The part of the driver who call for a change. 276 * @smps_request: The request to change the SMPS mode. 277 * @link_id: for MLO link_id, otherwise 0 (deflink) 278 * 279 * Get a requst to change the SMPS mode, 280 * and change it according to all other requests in the driver. 281 */ 282 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 283 enum iwl_mvm_smps_type_request req_type, 284 enum ieee80211_smps_mode smps_request, 285 unsigned int link_id) 286 { 287 struct iwl_mvm_vif *mvmvif; 288 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC; 289 int i; 290 291 lockdep_assert_held(&mvm->mutex); 292 293 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ 294 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 295 return; 296 297 if (vif->type != NL80211_IFTYPE_STATION) 298 return; 299 300 /* SMPS is handled by firmware */ 301 if (iwl_mvm_has_rlc_offload(mvm)) 302 return; 303 304 mvmvif = iwl_mvm_vif_from_mac80211(vif); 305 306 if (WARN_ON_ONCE(!mvmvif->link[link_id])) 307 return; 308 309 mvmvif->link[link_id]->smps_requests[req_type] = smps_request; 310 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 311 if (mvmvif->link[link_id]->smps_requests[i] == 312 IEEE80211_SMPS_STATIC) { 313 smps_mode = IEEE80211_SMPS_STATIC; 314 break; 315 } 316 if (mvmvif->link[link_id]->smps_requests[i] == 317 IEEE80211_SMPS_DYNAMIC) 318 smps_mode = IEEE80211_SMPS_DYNAMIC; 319 } 320 321 /* SMPS is disabled in eSR */ 322 if (mvmvif->esr_active) 323 smps_mode = IEEE80211_SMPS_OFF; 324 325 ieee80211_request_smps(vif, link_id, smps_mode); 326 } 327 328 void iwl_mvm_update_smps_on_active_links(struct iwl_mvm *mvm, 329 struct ieee80211_vif *vif, 330 enum iwl_mvm_smps_type_request req_type, 331 enum ieee80211_smps_mode smps_request) 332 { 333 struct ieee80211_bss_conf *link_conf; 334 unsigned int link_id; 335 336 rcu_read_lock(); 337 for_each_vif_active_link(vif, link_conf, link_id) 338 iwl_mvm_update_smps(mvm, vif, req_type, smps_request, 339 link_id); 340 rcu_read_unlock(); 341 } 342 343 static bool iwl_wait_stats_complete(struct iwl_notif_wait_data *notif_wait, 344 struct iwl_rx_packet *pkt, void *data) 345 { 346 WARN_ON(pkt->hdr.cmd != STATISTICS_NOTIFICATION); 347 348 return true; 349 } 350 351 #define PERIODIC_STAT_RATE 5 352 353 int iwl_mvm_request_periodic_system_statistics(struct iwl_mvm *mvm, bool enable) 354 { 355 u32 flags = enable ? 0 : IWL_STATS_CFG_FLG_DISABLE_NTFY_MSK; 356 u32 type = enable ? (IWL_STATS_NTFY_TYPE_ID_OPER | 357 IWL_STATS_NTFY_TYPE_ID_OPER_PART1) : 0; 358 struct iwl_system_statistics_cmd system_cmd = { 359 .cfg_mask = cpu_to_le32(flags), 360 .config_time_sec = cpu_to_le32(enable ? 361 PERIODIC_STAT_RATE : 0), 362 .type_id_mask = cpu_to_le32(type), 363 }; 364 365 return iwl_mvm_send_cmd_pdu(mvm, 366 WIDE_ID(SYSTEM_GROUP, 367 SYSTEM_STATISTICS_CMD), 368 0, sizeof(system_cmd), &system_cmd); 369 } 370 371 static int iwl_mvm_request_system_statistics(struct iwl_mvm *mvm, bool clear, 372 u8 cmd_ver) 373 { 374 struct iwl_system_statistics_cmd system_cmd = { 375 .cfg_mask = clear ? 376 cpu_to_le32(IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK) : 377 cpu_to_le32(IWL_STATS_CFG_FLG_RESET_MSK | 378 IWL_STATS_CFG_FLG_ON_DEMAND_NTFY_MSK), 379 .type_id_mask = cpu_to_le32(IWL_STATS_NTFY_TYPE_ID_OPER | 380 IWL_STATS_NTFY_TYPE_ID_OPER_PART1), 381 }; 382 struct iwl_host_cmd cmd = { 383 .id = WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_CMD), 384 .len[0] = sizeof(system_cmd), 385 .data[0] = &system_cmd, 386 }; 387 struct iwl_notification_wait stats_wait; 388 static const u16 stats_complete[] = { 389 WIDE_ID(SYSTEM_GROUP, SYSTEM_STATISTICS_END_NOTIF), 390 }; 391 int ret; 392 393 if (cmd_ver != 1) { 394 IWL_FW_CHECK_FAILED(mvm, 395 "Invalid system statistics command version:%d\n", 396 cmd_ver); 397 return -EOPNOTSUPP; 398 } 399 400 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 401 stats_complete, ARRAY_SIZE(stats_complete), 402 NULL, NULL); 403 404 mvm->statistics_clear = clear; 405 ret = iwl_mvm_send_cmd(mvm, &cmd); 406 if (ret) { 407 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 408 return ret; 409 } 410 411 /* 500ms for OPERATIONAL, PART1 and END notification should be enough 412 * for FW to collect data from all LMACs and send 413 * STATISTICS_NOTIFICATION to host 414 */ 415 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 2); 416 if (ret) 417 return ret; 418 419 if (clear) 420 iwl_mvm_accu_radio_stats(mvm); 421 422 return ret; 423 } 424 425 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear) 426 { 427 struct iwl_statistics_cmd scmd = { 428 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0, 429 }; 430 431 struct iwl_host_cmd cmd = { 432 .id = STATISTICS_CMD, 433 .len[0] = sizeof(scmd), 434 .data[0] = &scmd, 435 }; 436 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, 437 WIDE_ID(SYSTEM_GROUP, 438 SYSTEM_STATISTICS_CMD), 439 IWL_FW_CMD_VER_UNKNOWN); 440 int ret; 441 442 /* 443 * Don't request statistics during restart, they'll not have any useful 444 * information right after restart, nor is clearing needed 445 */ 446 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 447 return 0; 448 449 if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN) 450 return iwl_mvm_request_system_statistics(mvm, clear, cmd_ver); 451 452 /* From version 15 - STATISTICS_NOTIFICATION, the reply for 453 * STATISTICS_CMD is empty, and the response is with 454 * STATISTICS_NOTIFICATION notification 455 */ 456 if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, 457 STATISTICS_NOTIFICATION, 0) < 15) { 458 cmd.flags = CMD_WANT_SKB; 459 460 ret = iwl_mvm_send_cmd(mvm, &cmd); 461 if (ret) 462 return ret; 463 464 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt); 465 iwl_free_resp(&cmd); 466 } else { 467 struct iwl_notification_wait stats_wait; 468 static const u16 stats_complete[] = { 469 STATISTICS_NOTIFICATION, 470 }; 471 472 iwl_init_notification_wait(&mvm->notif_wait, &stats_wait, 473 stats_complete, ARRAY_SIZE(stats_complete), 474 iwl_wait_stats_complete, NULL); 475 476 ret = iwl_mvm_send_cmd(mvm, &cmd); 477 if (ret) { 478 iwl_remove_notification(&mvm->notif_wait, &stats_wait); 479 return ret; 480 } 481 482 /* 200ms should be enough for FW to collect data from all 483 * LMACs and send STATISTICS_NOTIFICATION to host 484 */ 485 ret = iwl_wait_notification(&mvm->notif_wait, &stats_wait, HZ / 5); 486 if (ret) 487 return ret; 488 } 489 490 if (clear) 491 iwl_mvm_accu_radio_stats(mvm); 492 493 return 0; 494 } 495 496 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm) 497 { 498 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time; 499 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time; 500 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf; 501 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan; 502 } 503 504 struct iwl_mvm_diversity_iter_data { 505 struct iwl_mvm_phy_ctxt *ctxt; 506 bool result; 507 }; 508 509 static void iwl_mvm_diversity_iter(void *_data, u8 *mac, 510 struct ieee80211_vif *vif) 511 { 512 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 513 struct iwl_mvm_diversity_iter_data *data = _data; 514 int i, link_id; 515 516 for_each_mvm_vif_valid_link(mvmvif, link_id) { 517 struct iwl_mvm_vif_link_info *link_info = mvmvif->link[link_id]; 518 519 if (link_info->phy_ctxt != data->ctxt) 520 continue; 521 522 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) { 523 if (link_info->smps_requests[i] == IEEE80211_SMPS_STATIC || 524 link_info->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) { 525 data->result = false; 526 break; 527 } 528 } 529 } 530 } 531 532 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm, 533 struct iwl_mvm_phy_ctxt *ctxt) 534 { 535 struct iwl_mvm_diversity_iter_data data = { 536 .ctxt = ctxt, 537 .result = true, 538 }; 539 540 lockdep_assert_held(&mvm->mutex); 541 542 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 543 return false; 544 545 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1) 546 return false; 547 548 if (mvm->cfg->rx_with_siso_diversity) 549 return false; 550 551 ieee80211_iterate_active_interfaces_atomic( 552 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 553 iwl_mvm_diversity_iter, &data); 554 555 return data.result; 556 } 557 558 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm, 559 bool low_latency, u16 mac_id) 560 { 561 struct iwl_mac_low_latency_cmd cmd = { 562 .mac_id = cpu_to_le32(mac_id) 563 }; 564 565 if (!fw_has_capa(&mvm->fw->ucode_capa, 566 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA)) 567 return; 568 569 if (low_latency) { 570 /* currently we don't care about the direction */ 571 cmd.low_latency_rx = 1; 572 cmd.low_latency_tx = 1; 573 } 574 575 if (iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, LOW_LATENCY_CMD), 576 0, sizeof(cmd), &cmd)) 577 IWL_ERR(mvm, "Failed to send low latency command\n"); 578 } 579 580 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 581 bool low_latency, 582 enum iwl_mvm_low_latency_cause cause) 583 { 584 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 585 int res; 586 bool prev; 587 588 lockdep_assert_held(&mvm->mutex); 589 590 prev = iwl_mvm_vif_low_latency(mvmvif); 591 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause); 592 593 low_latency = iwl_mvm_vif_low_latency(mvmvif); 594 595 if (low_latency == prev) 596 return 0; 597 598 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id); 599 600 res = iwl_mvm_update_quotas(mvm, false, NULL); 601 if (res) 602 return res; 603 604 iwl_mvm_bt_coex_vif_change(mvm); 605 606 return iwl_mvm_power_update_mac(mvm); 607 } 608 609 struct iwl_mvm_low_latency_iter { 610 bool result; 611 bool result_per_band[NUM_NL80211_BANDS]; 612 }; 613 614 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 615 { 616 struct iwl_mvm_low_latency_iter *result = _data; 617 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 618 enum nl80211_band band; 619 620 if (iwl_mvm_vif_low_latency(mvmvif)) { 621 result->result = true; 622 623 if (!mvmvif->deflink.phy_ctxt) 624 return; 625 626 band = mvmvif->deflink.phy_ctxt->channel->band; 627 result->result_per_band[band] = true; 628 } 629 } 630 631 bool iwl_mvm_low_latency(struct iwl_mvm *mvm) 632 { 633 struct iwl_mvm_low_latency_iter data = {}; 634 635 ieee80211_iterate_active_interfaces_atomic( 636 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 637 iwl_mvm_ll_iter, &data); 638 639 return data.result; 640 } 641 642 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band) 643 { 644 struct iwl_mvm_low_latency_iter data = {}; 645 646 ieee80211_iterate_active_interfaces_atomic( 647 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 648 iwl_mvm_ll_iter, &data); 649 650 return data.result_per_band[band]; 651 } 652 653 struct iwl_bss_iter_data { 654 struct ieee80211_vif *vif; 655 bool error; 656 }; 657 658 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac, 659 struct ieee80211_vif *vif) 660 { 661 struct iwl_bss_iter_data *data = _data; 662 663 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) 664 return; 665 666 if (data->vif) { 667 data->error = true; 668 return; 669 } 670 671 data->vif = vif; 672 } 673 674 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm) 675 { 676 struct iwl_bss_iter_data bss_iter_data = {}; 677 678 ieee80211_iterate_active_interfaces_atomic( 679 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 680 iwl_mvm_bss_iface_iterator, &bss_iter_data); 681 682 if (bss_iter_data.error) 683 return ERR_PTR(-EINVAL); 684 685 return bss_iter_data.vif; 686 } 687 688 struct iwl_bss_find_iter_data { 689 struct ieee80211_vif *vif; 690 u32 macid; 691 }; 692 693 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, 694 struct ieee80211_vif *vif) 695 { 696 struct iwl_bss_find_iter_data *data = _data; 697 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 698 699 if (mvmvif->id == data->macid) 700 data->vif = vif; 701 } 702 703 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) 704 { 705 struct iwl_bss_find_iter_data data = { 706 .macid = macid, 707 }; 708 709 lockdep_assert_held(&mvm->mutex); 710 711 ieee80211_iterate_active_interfaces_atomic( 712 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 713 iwl_mvm_bss_find_iface_iterator, &data); 714 715 return data.vif; 716 } 717 718 struct iwl_sta_iter_data { 719 bool assoc; 720 }; 721 722 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac, 723 struct ieee80211_vif *vif) 724 { 725 struct iwl_sta_iter_data *data = _data; 726 727 if (vif->type != NL80211_IFTYPE_STATION) 728 return; 729 730 if (vif->cfg.assoc) 731 data->assoc = true; 732 } 733 734 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm) 735 { 736 struct iwl_sta_iter_data data = { 737 .assoc = false, 738 }; 739 740 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 741 IEEE80211_IFACE_ITER_NORMAL, 742 iwl_mvm_sta_iface_iterator, 743 &data); 744 return data.assoc; 745 } 746 747 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm, 748 struct ieee80211_vif *vif) 749 { 750 unsigned int default_timeout = 751 mvm->trans->trans_cfg->base_params->wd_timeout; 752 753 /* 754 * We can't know when the station is asleep or awake, so we 755 * must disable the queue hang detection. 756 */ 757 if (fw_has_capa(&mvm->fw->ucode_capa, 758 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) && 759 vif->type == NL80211_IFTYPE_AP) 760 return IWL_WATCHDOG_DISABLED; 761 return default_timeout; 762 } 763 764 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 765 const char *errmsg) 766 { 767 struct iwl_fw_dbg_trigger_tlv *trig; 768 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 769 770 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 771 FW_DBG_TRIGGER_MLME); 772 if (!trig) 773 goto out; 774 775 trig_mlme = (void *)trig->data; 776 777 if (trig_mlme->stop_connection_loss && 778 --trig_mlme->stop_connection_loss) 779 goto out; 780 781 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg); 782 783 out: 784 ieee80211_connection_loss(vif); 785 } 786 787 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, 788 struct ieee80211_vif *vif, 789 const struct ieee80211_sta *sta, 790 u16 tid) 791 { 792 struct iwl_fw_dbg_trigger_tlv *trig; 793 struct iwl_fw_dbg_trigger_ba *ba_trig; 794 795 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 796 FW_DBG_TRIGGER_BA); 797 if (!trig) 798 return; 799 800 ba_trig = (void *)trig->data; 801 802 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid))) 803 return; 804 805 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 806 "Frame from %pM timed out, tid %d", 807 sta->addr, tid); 808 } 809 810 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed) 811 { 812 if (!elapsed) 813 return 0; 814 815 return (100 * airtime / elapsed) / USEC_PER_MSEC; 816 } 817 818 static enum iwl_mvm_traffic_load 819 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed) 820 { 821 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed); 822 823 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH) 824 return IWL_MVM_TRAFFIC_HIGH; 825 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH) 826 return IWL_MVM_TRAFFIC_MEDIUM; 827 828 return IWL_MVM_TRAFFIC_LOW; 829 } 830 831 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) 832 { 833 struct iwl_mvm *mvm = _data; 834 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 835 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC; 836 837 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER) 838 return; 839 840 low_latency = mvm->tcm.result.low_latency[mvmvif->id]; 841 842 if (!mvm->tcm.result.change[mvmvif->id] && 843 prev == low_latency) { 844 iwl_mvm_update_quotas(mvm, false, NULL); 845 return; 846 } 847 848 if (prev != low_latency) { 849 /* this sends traffic load and updates quota as well */ 850 iwl_mvm_update_low_latency(mvm, vif, low_latency, 851 LOW_LATENCY_TRAFFIC); 852 } else { 853 iwl_mvm_update_quotas(mvm, false, NULL); 854 } 855 } 856 857 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) 858 { 859 guard(mvm)(mvm); 860 861 ieee80211_iterate_active_interfaces( 862 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 863 iwl_mvm_tcm_iter, mvm); 864 865 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 866 iwl_mvm_config_scan(mvm); 867 } 868 869 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk) 870 { 871 struct iwl_mvm *mvm; 872 struct iwl_mvm_vif *mvmvif; 873 struct ieee80211_vif *vif; 874 875 mvmvif = container_of(wk, struct iwl_mvm_vif, 876 uapsd_nonagg_detected_wk.work); 877 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 878 mvm = mvmvif->mvm; 879 880 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions) 881 return; 882 883 /* remember that this AP is broken */ 884 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr, 885 vif->bss_conf.bssid, ETH_ALEN); 886 mvm->uapsd_noagg_bssid_write_idx++; 887 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN) 888 mvm->uapsd_noagg_bssid_write_idx = 0; 889 890 iwl_mvm_connection_loss(mvm, vif, 891 "AP isn't using AMPDU with uAPSD enabled"); 892 } 893 894 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm, 895 struct ieee80211_vif *vif) 896 { 897 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 898 899 if (vif->type != NL80211_IFTYPE_STATION) 900 return; 901 902 if (!vif->cfg.assoc) 903 return; 904 905 if (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd && 906 !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd && 907 !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd && 908 !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) 909 return; 910 911 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected) 912 return; 913 914 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true; 915 IWL_INFO(mvm, 916 "detected AP should do aggregation but isn't, likely due to U-APSD\n"); 917 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 918 15 * HZ); 919 } 920 921 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm, 922 unsigned int elapsed, 923 int mac) 924 { 925 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes; 926 u64 tpt; 927 unsigned long rate; 928 struct ieee80211_vif *vif; 929 930 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate); 931 932 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions || 933 mvm->tcm.data[mac].uapsd_nonagg_detect.detected) 934 return; 935 936 if (iwl_mvm_has_new_rx_api(mvm)) { 937 tpt = 8 * bytes; /* kbps */ 938 do_div(tpt, elapsed); 939 rate *= 1000; /* kbps */ 940 if (tpt < 22 * rate / 100) 941 return; 942 } else { 943 /* 944 * the rate here is actually the threshold, in 100Kbps units, 945 * so do the needed conversion from bytes to 100Kbps: 946 * 100kb = bits / (100 * 1000), 947 * 100kbps = 100kb / (msecs / 1000) == 948 * (bits / (100 * 1000)) / (msecs / 1000) == 949 * bits / (100 * msecs) 950 */ 951 tpt = (8 * bytes); 952 do_div(tpt, elapsed * 100); 953 if (tpt < rate) 954 return; 955 } 956 957 rcu_read_lock(); 958 vif = rcu_dereference(mvm->vif_id_to_mac[mac]); 959 if (vif) 960 iwl_mvm_uapsd_agg_disconnect(mvm, vif); 961 rcu_read_unlock(); 962 } 963 964 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac, 965 struct ieee80211_vif *vif) 966 { 967 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 968 u32 *band = _data; 969 970 if (!mvmvif->deflink.phy_ctxt) 971 return; 972 973 band[mvmvif->id] = mvmvif->deflink.phy_ctxt->channel->band; 974 } 975 976 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm, 977 unsigned long ts, 978 bool handle_uapsd) 979 { 980 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts); 981 unsigned int uapsd_elapsed = 982 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts); 983 u32 total_airtime = 0; 984 u32 band_airtime[NUM_NL80211_BANDS] = {0}; 985 u32 band[NUM_MAC_INDEX_DRIVER] = {0}; 986 int ac, mac, i; 987 bool low_latency = false; 988 enum iwl_mvm_traffic_load load, band_load; 989 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD); 990 991 if (handle_ll) 992 mvm->tcm.ll_ts = ts; 993 if (handle_uapsd) 994 mvm->tcm.uapsd_nonagg_ts = ts; 995 996 mvm->tcm.result.elapsed = elapsed; 997 998 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 999 IEEE80211_IFACE_ITER_NORMAL, 1000 iwl_mvm_tcm_iterator, 1001 &band); 1002 1003 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1004 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1005 u32 vo_vi_pkts = 0; 1006 u32 airtime = mdata->rx.airtime + mdata->tx.airtime; 1007 1008 total_airtime += airtime; 1009 band_airtime[band[mac]] += airtime; 1010 1011 load = iwl_mvm_tcm_load(mvm, airtime, elapsed); 1012 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac]; 1013 mvm->tcm.result.load[mac] = load; 1014 mvm->tcm.result.airtime[mac] = airtime; 1015 1016 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++) 1017 vo_vi_pkts += mdata->rx.pkts[ac] + 1018 mdata->tx.pkts[ac]; 1019 1020 /* enable immediately with enough packets but defer disabling */ 1021 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH) 1022 mvm->tcm.result.low_latency[mac] = true; 1023 else if (handle_ll) 1024 mvm->tcm.result.low_latency[mac] = false; 1025 1026 if (handle_ll) { 1027 /* clear old data */ 1028 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1029 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1030 } 1031 low_latency |= mvm->tcm.result.low_latency[mac]; 1032 1033 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd) 1034 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed, 1035 mac); 1036 /* clear old data */ 1037 if (handle_uapsd) 1038 mdata->uapsd_nonagg_detect.rx_bytes = 0; 1039 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1040 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1041 } 1042 1043 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed); 1044 mvm->tcm.result.global_load = load; 1045 1046 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1047 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed); 1048 mvm->tcm.result.band_load[i] = band_load; 1049 } 1050 1051 /* 1052 * If the current load isn't low we need to force re-evaluation 1053 * in the TCM period, so that we can return to low load if there 1054 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get 1055 * triggered by traffic). 1056 */ 1057 if (load != IWL_MVM_TRAFFIC_LOW) 1058 return MVM_TCM_PERIOD; 1059 /* 1060 * If low-latency is active we need to force re-evaluation after 1061 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency 1062 * when there's no traffic at all. 1063 */ 1064 if (low_latency) 1065 return MVM_LL_PERIOD; 1066 /* 1067 * Otherwise, we don't need to run the work struct because we're 1068 * in the default "idle" state - traffic indication is low (which 1069 * also covers the "no traffic" case) and low-latency is disabled 1070 * so there's no state that may need to be disabled when there's 1071 * no traffic at all. 1072 * 1073 * Note that this has no impact on the regular scheduling of the 1074 * updates triggered by traffic - those happen whenever one of the 1075 * two timeouts expire (if there's traffic at all.) 1076 */ 1077 return 0; 1078 } 1079 1080 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm) 1081 { 1082 unsigned long ts = jiffies; 1083 bool handle_uapsd = 1084 time_after(ts, mvm->tcm.uapsd_nonagg_ts + 1085 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD)); 1086 1087 spin_lock(&mvm->tcm.lock); 1088 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1089 spin_unlock(&mvm->tcm.lock); 1090 return; 1091 } 1092 spin_unlock(&mvm->tcm.lock); 1093 1094 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) { 1095 guard(mvm)(mvm); 1096 if (iwl_mvm_request_statistics(mvm, true)) 1097 handle_uapsd = false; 1098 } 1099 1100 spin_lock(&mvm->tcm.lock); 1101 /* re-check if somebody else won the recheck race */ 1102 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) { 1103 /* calculate statistics */ 1104 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts, 1105 handle_uapsd); 1106 1107 /* the memset needs to be visible before the timestamp */ 1108 smp_mb(); 1109 mvm->tcm.ts = ts; 1110 if (work_delay) 1111 schedule_delayed_work(&mvm->tcm.work, work_delay); 1112 } 1113 spin_unlock(&mvm->tcm.lock); 1114 1115 iwl_mvm_tcm_results(mvm); 1116 } 1117 1118 void iwl_mvm_tcm_work(struct work_struct *work) 1119 { 1120 struct delayed_work *delayed_work = to_delayed_work(work); 1121 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1122 tcm.work); 1123 1124 iwl_mvm_recalc_tcm(mvm); 1125 } 1126 1127 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel) 1128 { 1129 spin_lock_bh(&mvm->tcm.lock); 1130 mvm->tcm.paused = true; 1131 spin_unlock_bh(&mvm->tcm.lock); 1132 if (with_cancel) 1133 cancel_delayed_work_sync(&mvm->tcm.work); 1134 } 1135 1136 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm) 1137 { 1138 int mac; 1139 bool low_latency = false; 1140 1141 spin_lock_bh(&mvm->tcm.lock); 1142 mvm->tcm.ts = jiffies; 1143 mvm->tcm.ll_ts = jiffies; 1144 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) { 1145 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac]; 1146 1147 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts)); 1148 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts)); 1149 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime)); 1150 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime)); 1151 1152 if (mvm->tcm.result.low_latency[mac]) 1153 low_latency = true; 1154 } 1155 /* The TCM data needs to be reset before "paused" flag changes */ 1156 smp_mb(); 1157 mvm->tcm.paused = false; 1158 1159 /* 1160 * if the current load is not low or low latency is active, force 1161 * re-evaluation to cover the case of no traffic. 1162 */ 1163 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW) 1164 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD); 1165 else if (low_latency) 1166 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD); 1167 1168 spin_unlock_bh(&mvm->tcm.lock); 1169 } 1170 1171 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1172 { 1173 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1174 1175 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk, 1176 iwl_mvm_tcm_uapsd_nonagg_detected_wk); 1177 } 1178 1179 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 1180 { 1181 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1182 1183 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk); 1184 } 1185 1186 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm) 1187 { 1188 u32 reg_addr = DEVICE_SYSTEM_TIME_REG; 1189 1190 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 && 1191 mvm->trans->cfg->gp2_reg_addr) 1192 reg_addr = mvm->trans->cfg->gp2_reg_addr; 1193 1194 return iwl_read_prph(mvm->trans, reg_addr); 1195 } 1196 1197 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type, 1198 u32 *gp2, u64 *boottime, ktime_t *realtime) 1199 { 1200 bool ps_disabled; 1201 1202 lockdep_assert_held(&mvm->mutex); 1203 1204 /* Disable power save when reading GP2 */ 1205 ps_disabled = mvm->ps_disabled; 1206 if (!ps_disabled) { 1207 mvm->ps_disabled = true; 1208 iwl_mvm_power_update_device(mvm); 1209 } 1210 1211 *gp2 = iwl_mvm_get_systime(mvm); 1212 1213 if (clock_type == CLOCK_BOOTTIME && boottime) 1214 *boottime = ktime_get_boottime_ns(); 1215 else if (clock_type == CLOCK_REALTIME && realtime) 1216 *realtime = ktime_get_real(); 1217 1218 if (!ps_disabled) { 1219 mvm->ps_disabled = ps_disabled; 1220 iwl_mvm_power_update_device(mvm); 1221 } 1222 } 1223 1224 /* Find if at least two links from different vifs use same channel 1225 * FIXME: consider having a refcount array in struct iwl_mvm_vif for 1226 * used phy_ctxt ids. 1227 */ 1228 bool iwl_mvm_have_links_same_channel(struct iwl_mvm_vif *vif1, 1229 struct iwl_mvm_vif *vif2) 1230 { 1231 unsigned int i, j; 1232 1233 for_each_mvm_vif_valid_link(vif1, i) { 1234 for_each_mvm_vif_valid_link(vif2, j) { 1235 if (vif1->link[i]->phy_ctxt == vif2->link[j]->phy_ctxt) 1236 return true; 1237 } 1238 } 1239 1240 return false; 1241 } 1242 1243 bool iwl_mvm_vif_is_active(struct iwl_mvm_vif *mvmvif) 1244 { 1245 unsigned int i; 1246 1247 /* FIXME: can it fail when phy_ctxt is assigned? */ 1248 for_each_mvm_vif_valid_link(mvmvif, i) { 1249 if (mvmvif->link[i]->phy_ctxt && 1250 mvmvif->link[i]->phy_ctxt->id < NUM_PHY_CTX) 1251 return true; 1252 } 1253 1254 return false; 1255 } 1256