1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <net/mac80211.h> 9 #include <linux/crc32.h> 10 11 #include "mvm.h" 12 #include "fw/api/scan.h" 13 #include "iwl-io.h" 14 15 #define IWL_DENSE_EBS_SCAN_RATIO 5 16 #define IWL_SPARSE_EBS_SCAN_RATIO 1 17 18 #define IWL_SCAN_DWELL_ACTIVE 10 19 #define IWL_SCAN_DWELL_PASSIVE 110 20 #define IWL_SCAN_DWELL_FRAGMENTED 44 21 #define IWL_SCAN_DWELL_EXTENDED 90 22 #define IWL_SCAN_NUM_OF_FRAGS 3 23 24 /* adaptive dwell max budget time [TU] for full scan */ 25 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 26 /* adaptive dwell max budget time [TU] for directed scan */ 27 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 28 /* adaptive dwell default high band APs number */ 29 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 30 /* adaptive dwell default low band APs number */ 31 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 32 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 33 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 34 /* number of scan channels */ 35 #define IWL_SCAN_NUM_CHANNELS 112 36 /* adaptive dwell number of APs override mask for p2p friendly GO */ 37 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 38 /* adaptive dwell number of APs override mask for social channels */ 39 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 40 /* adaptive dwell number of APs override for p2p friendly GO channels */ 41 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 42 /* adaptive dwell number of APs override for social channels */ 43 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 44 45 /* minimal number of 2GHz and 5GHz channels in the regular scan request */ 46 #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 47 48 /* Number of iterations on the channel for mei filtered scan */ 49 #define IWL_MEI_SCAN_NUM_ITER 5U 50 51 #define WFA_TPC_IE_LEN 9 52 53 struct iwl_mvm_scan_timing_params { 54 u32 suspend_time; 55 u32 max_out_time; 56 }; 57 58 static struct iwl_mvm_scan_timing_params scan_timing[] = { 59 [IWL_SCAN_TYPE_UNASSOC] = { 60 .suspend_time = 0, 61 .max_out_time = 0, 62 }, 63 [IWL_SCAN_TYPE_WILD] = { 64 .suspend_time = 30, 65 .max_out_time = 120, 66 }, 67 [IWL_SCAN_TYPE_MILD] = { 68 .suspend_time = 120, 69 .max_out_time = 120, 70 }, 71 [IWL_SCAN_TYPE_FRAGMENTED] = { 72 .suspend_time = 95, 73 .max_out_time = 44, 74 }, 75 [IWL_SCAN_TYPE_FAST_BALANCE] = { 76 .suspend_time = 30, 77 .max_out_time = 37, 78 }, 79 }; 80 81 struct iwl_mvm_scan_params { 82 /* For CDB this is low band scan type, for non-CDB - type. */ 83 enum iwl_mvm_scan_type type; 84 enum iwl_mvm_scan_type hb_type; 85 u32 n_channels; 86 u16 delay; 87 int n_ssids; 88 struct cfg80211_ssid *ssids; 89 struct ieee80211_channel **channels; 90 u32 flags; 91 u8 *mac_addr; 92 u8 *mac_addr_mask; 93 bool no_cck; 94 bool pass_all; 95 int n_match_sets; 96 struct iwl_scan_probe_req preq; 97 struct cfg80211_match_set *match_sets; 98 int n_scan_plans; 99 struct cfg80211_sched_scan_plan *scan_plans; 100 bool iter_notif; 101 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 102 u32 n_6ghz_params; 103 bool scan_6ghz; 104 bool enable_6ghz_passive; 105 bool respect_p2p_go, respect_p2p_go_hb; 106 s8 tsf_report_link_id; 107 u8 bssid[ETH_ALEN] __aligned(2); 108 }; 109 110 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 111 { 112 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 113 114 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 115 return (void *)&cmd->v8.data; 116 117 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 118 return (void *)&cmd->v7.data; 119 120 if (iwl_mvm_cdb_scan_api(mvm)) 121 return (void *)&cmd->v6.data; 122 123 return (void *)&cmd->v1.data; 124 } 125 126 static inline struct iwl_scan_umac_chan_param * 127 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 128 { 129 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 130 131 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 132 return &cmd->v8.channel; 133 134 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 135 return &cmd->v7.channel; 136 137 if (iwl_mvm_cdb_scan_api(mvm)) 138 return &cmd->v6.channel; 139 140 return &cmd->v1.channel; 141 } 142 143 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 144 { 145 if (mvm->scan_rx_ant != ANT_NONE) 146 return mvm->scan_rx_ant; 147 return iwl_mvm_get_valid_rx_ant(mvm); 148 } 149 150 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 151 { 152 u16 rx_chain; 153 u8 rx_ant; 154 155 rx_ant = iwl_mvm_scan_rx_ant(mvm); 156 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 157 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 158 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 159 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 160 return cpu_to_le16(rx_chain); 161 } 162 163 static inline __le32 164 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 165 bool no_cck) 166 { 167 u32 tx_ant; 168 169 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 170 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 171 172 if (band == NL80211_BAND_2GHZ && !no_cck) 173 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 174 tx_ant); 175 else 176 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 177 } 178 179 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 180 { 181 return mvm->tcm.result.global_load; 182 } 183 184 static enum iwl_mvm_traffic_load 185 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 186 { 187 return mvm->tcm.result.band_load[band]; 188 } 189 190 struct iwl_mvm_scan_iter_data { 191 u32 global_cnt; 192 struct ieee80211_vif *current_vif; 193 bool is_dcm_with_p2p_go; 194 }; 195 196 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 197 struct ieee80211_vif *vif) 198 { 199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 200 struct iwl_mvm_scan_iter_data *data = _data; 201 struct iwl_mvm_vif *curr_mvmvif; 202 203 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && 204 mvmvif->deflink.phy_ctxt && 205 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) 206 data->global_cnt += 1; 207 208 if (!data->current_vif || vif == data->current_vif) 209 return; 210 211 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 212 213 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO && 214 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && 215 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 216 data->is_dcm_with_p2p_go = true; 217 } 218 219 static enum 220 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 221 struct ieee80211_vif *vif, 222 enum iwl_mvm_traffic_load load, 223 bool low_latency) 224 { 225 struct iwl_mvm_scan_iter_data data = { 226 .current_vif = vif, 227 .is_dcm_with_p2p_go = false, 228 .global_cnt = 0, 229 }; 230 231 /* 232 * A scanning AP interface probably wants to generate a survey to do 233 * ACS (automatic channel selection). 234 * Force a non-fragmented scan in that case. 235 */ 236 if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP) 237 return IWL_SCAN_TYPE_WILD; 238 239 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 240 IEEE80211_IFACE_ITER_NORMAL, 241 iwl_mvm_scan_iterator, 242 &data); 243 244 if (!data.global_cnt) 245 return IWL_SCAN_TYPE_UNASSOC; 246 247 if (fw_has_api(&mvm->fw->ucode_capa, 248 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 249 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 250 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 251 return IWL_SCAN_TYPE_FRAGMENTED; 252 253 /* 254 * in case of DCM with P2P GO set all scan requests as 255 * fast-balance scan 256 */ 257 if (vif && vif->type == NL80211_IFTYPE_STATION && 258 data.is_dcm_with_p2p_go) 259 return IWL_SCAN_TYPE_FAST_BALANCE; 260 } 261 262 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 263 return IWL_SCAN_TYPE_MILD; 264 265 return IWL_SCAN_TYPE_WILD; 266 } 267 268 static enum 269 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 270 struct ieee80211_vif *vif) 271 { 272 enum iwl_mvm_traffic_load load; 273 bool low_latency; 274 275 load = iwl_mvm_get_traffic_load(mvm); 276 low_latency = iwl_mvm_low_latency(mvm); 277 278 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 279 } 280 281 static enum 282 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 283 struct ieee80211_vif *vif, 284 enum nl80211_band band) 285 { 286 enum iwl_mvm_traffic_load load; 287 bool low_latency; 288 289 load = iwl_mvm_get_traffic_load_band(mvm, band); 290 low_latency = iwl_mvm_low_latency_band(mvm, band); 291 292 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 293 } 294 295 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 296 { 297 /* require rrm scan whenever the fw supports it */ 298 return fw_has_capa(&mvm->fw->ucode_capa, 299 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 300 } 301 302 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 303 { 304 int max_probe_len; 305 306 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 307 308 /* we create the 802.11 header SSID element and WFA TPC element */ 309 max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN; 310 311 /* DS parameter set element is added on 2.4GHZ band if required */ 312 if (iwl_mvm_rrm_scan_needed(mvm)) 313 max_probe_len -= 3; 314 315 return max_probe_len; 316 } 317 318 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 319 { 320 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 321 322 /* TODO: [BUG] This function should return the maximum allowed size of 323 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 324 * in the same command. So the correct implementation of this function 325 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 326 * command has only 512 bytes and it would leave us with about 240 327 * bytes for scan IEs, which is clearly not enough. So meanwhile 328 * we will report an incorrect value. This may result in a failure to 329 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 330 * functions with -ENOBUFS, if a large enough probe will be provided. 331 */ 332 return max_ie_len; 333 } 334 335 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 336 struct iwl_rx_cmd_buffer *rxb) 337 { 338 struct iwl_rx_packet *pkt = rxb_addr(rxb); 339 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 340 341 IWL_DEBUG_SCAN(mvm, 342 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 343 notif->status, notif->scanned_channels); 344 345 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 346 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 347 ieee80211_sched_scan_results(mvm->hw); 348 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 349 } 350 } 351 352 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 353 struct iwl_rx_cmd_buffer *rxb) 354 { 355 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 356 ieee80211_sched_scan_results(mvm->hw); 357 } 358 359 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 360 { 361 switch (status) { 362 case IWL_SCAN_EBS_SUCCESS: 363 return "successful"; 364 case IWL_SCAN_EBS_INACTIVE: 365 return "inactive"; 366 case IWL_SCAN_EBS_FAILED: 367 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 368 default: 369 return "failed"; 370 } 371 } 372 373 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 374 struct iwl_rx_cmd_buffer *rxb) 375 { 376 struct iwl_rx_packet *pkt = rxb_addr(rxb); 377 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 378 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 379 380 /* If this happens, the firmware has mistakenly sent an LMAC 381 * notification during UMAC scans -- warn and ignore it. 382 */ 383 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 384 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 385 return; 386 387 /* scan status must be locked for proper checking */ 388 lockdep_assert_held(&mvm->mutex); 389 390 /* We first check if we were stopping a scan, in which case we 391 * just clear the stopping flag. Then we check if it was a 392 * firmware initiated stop, in which case we need to inform 393 * mac80211. 394 * Note that we can have a stopping and a running scan 395 * simultaneously, but we can't have two different types of 396 * scans stopping or running at the same time (since LMAC 397 * doesn't support it). 398 */ 399 400 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 401 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 402 403 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 404 aborted ? "aborted" : "completed", 405 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 406 IWL_DEBUG_SCAN(mvm, 407 "Last line %d, Last iteration %d, Time after last iteration %d\n", 408 scan_notif->last_schedule_line, 409 scan_notif->last_schedule_iteration, 410 __le32_to_cpu(scan_notif->time_after_last_iter)); 411 412 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 413 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 414 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 415 aborted ? "aborted" : "completed", 416 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 417 418 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 419 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 420 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 421 422 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 423 aborted ? "aborted" : "completed", 424 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 425 IWL_DEBUG_SCAN(mvm, 426 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 427 scan_notif->last_schedule_line, 428 scan_notif->last_schedule_iteration, 429 __le32_to_cpu(scan_notif->time_after_last_iter)); 430 431 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 432 ieee80211_sched_scan_stopped(mvm->hw); 433 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 434 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 435 struct cfg80211_scan_info info = { 436 .aborted = aborted, 437 }; 438 439 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 440 aborted ? "aborted" : "completed", 441 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 442 443 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 444 ieee80211_scan_completed(mvm->hw, &info); 445 cancel_delayed_work(&mvm->scan_timeout_dwork); 446 iwl_mvm_resume_tcm(mvm); 447 } else { 448 IWL_ERR(mvm, 449 "got scan complete notification but no scan is running\n"); 450 } 451 452 mvm->last_ebs_successful = 453 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 454 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 455 } 456 457 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 458 { 459 int i; 460 461 for (i = 0; i < PROBE_OPTION_MAX; i++) { 462 if (!ssid_list[i].len) 463 break; 464 if (ssid_list[i].len == ssid_len && 465 !memcmp(ssid_list->ssid, ssid, ssid_len)) 466 return i; 467 } 468 return -1; 469 } 470 471 /* We insert the SSIDs in an inverted order, because the FW will 472 * invert it back. 473 */ 474 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 475 struct iwl_ssid_ie *ssids, 476 u32 *ssid_bitmap) 477 { 478 int i, j; 479 int index; 480 u32 tmp_bitmap = 0; 481 482 /* 483 * copy SSIDs from match list. 484 * iwl_config_sched_scan_profiles() uses the order of these ssids to 485 * config match list. 486 */ 487 for (i = 0, j = params->n_match_sets - 1; 488 j >= 0 && i < PROBE_OPTION_MAX; 489 i++, j--) { 490 /* skip empty SSID matchsets */ 491 if (!params->match_sets[j].ssid.ssid_len) 492 continue; 493 ssids[i].id = WLAN_EID_SSID; 494 ssids[i].len = params->match_sets[j].ssid.ssid_len; 495 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 496 ssids[i].len); 497 } 498 499 /* add SSIDs from scan SSID list */ 500 for (j = params->n_ssids - 1; 501 j >= 0 && i < PROBE_OPTION_MAX; 502 i++, j--) { 503 index = iwl_ssid_exist(params->ssids[j].ssid, 504 params->ssids[j].ssid_len, 505 ssids); 506 if (index < 0) { 507 ssids[i].id = WLAN_EID_SSID; 508 ssids[i].len = params->ssids[j].ssid_len; 509 memcpy(ssids[i].ssid, params->ssids[j].ssid, 510 ssids[i].len); 511 tmp_bitmap |= BIT(i); 512 } else { 513 tmp_bitmap |= BIT(index); 514 } 515 } 516 if (ssid_bitmap) 517 *ssid_bitmap = tmp_bitmap; 518 } 519 520 static int 521 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 522 struct cfg80211_sched_scan_request *req) 523 { 524 struct iwl_scan_offload_profile *profile; 525 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 526 struct iwl_scan_offload_blocklist *blocklist; 527 struct iwl_scan_offload_profile_cfg_data *data; 528 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 529 int profile_cfg_size = sizeof(*data) + 530 sizeof(*profile) * max_profiles; 531 struct iwl_host_cmd cmd = { 532 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 533 .len[1] = profile_cfg_size, 534 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 535 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 536 }; 537 int blocklist_len; 538 int i; 539 int ret; 540 541 if (WARN_ON(req->n_match_sets > max_profiles)) 542 return -EIO; 543 544 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 545 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 546 else 547 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 548 549 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 550 if (!blocklist) 551 return -ENOMEM; 552 553 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 554 if (!profile_cfg_v1) { 555 ret = -ENOMEM; 556 goto free_blocklist; 557 } 558 559 cmd.data[0] = blocklist; 560 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 561 cmd.data[1] = profile_cfg_v1; 562 563 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 564 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 565 struct iwl_scan_offload_profile_cfg *profile_cfg = 566 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 567 568 data = &profile_cfg->data; 569 } else { 570 data = &profile_cfg_v1->data; 571 } 572 573 /* No blocklist configuration */ 574 data->num_profiles = req->n_match_sets; 575 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 576 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 577 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 578 579 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 580 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 581 582 for (i = 0; i < req->n_match_sets; i++) { 583 profile = &profile_cfg_v1->profiles[i]; 584 profile->ssid_index = i; 585 /* Support any cipher and auth algorithm */ 586 profile->unicast_cipher = 0xff; 587 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 588 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 589 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 590 profile->network_type = IWL_NETWORK_TYPE_ANY; 591 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 592 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 593 } 594 595 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 596 597 ret = iwl_mvm_send_cmd(mvm, &cmd); 598 kfree(profile_cfg_v1); 599 free_blocklist: 600 kfree(blocklist); 601 602 return ret; 603 } 604 605 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 606 struct cfg80211_sched_scan_request *req) 607 { 608 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 609 IWL_DEBUG_SCAN(mvm, 610 "Sending scheduled scan with filtering, n_match_sets %d\n", 611 req->n_match_sets); 612 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 613 return false; 614 } 615 616 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 617 618 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 619 return true; 620 } 621 622 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 623 { 624 int ret; 625 struct iwl_host_cmd cmd = { 626 .id = SCAN_OFFLOAD_ABORT_CMD, 627 }; 628 u32 status = CAN_ABORT_STATUS; 629 630 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 631 if (ret) 632 return ret; 633 634 if (status != CAN_ABORT_STATUS) { 635 /* 636 * The scan abort will return 1 for success or 637 * 2 for "failure". A failure condition can be 638 * due to simply not being in an active scan which 639 * can occur if we send the scan abort before the 640 * microcode has notified us that a scan is completed. 641 */ 642 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 643 ret = -ENOENT; 644 } 645 646 return ret; 647 } 648 649 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 650 struct iwl_scan_req_tx_cmd *tx_cmd, 651 bool no_cck) 652 { 653 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 654 TX_CMD_FLG_BT_DIS); 655 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 656 NL80211_BAND_2GHZ, 657 no_cck); 658 659 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 660 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 661 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 662 663 /* 664 * Fw doesn't use this sta anymore, pending deprecation via HOST API 665 * change 666 */ 667 } else { 668 tx_cmd[0].sta_id = 0xff; 669 tx_cmd[1].sta_id = 0xff; 670 } 671 672 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 673 TX_CMD_FLG_BT_DIS); 674 675 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 676 NL80211_BAND_5GHZ, 677 no_cck); 678 } 679 680 static void 681 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 682 struct ieee80211_channel **channels, 683 int n_channels, u32 ssid_bitmap, 684 struct iwl_scan_req_lmac *cmd) 685 { 686 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 687 int i; 688 689 for (i = 0; i < n_channels; i++) { 690 channel_cfg[i].channel_num = 691 cpu_to_le16(channels[i]->hw_value); 692 channel_cfg[i].iter_count = cpu_to_le16(1); 693 channel_cfg[i].iter_interval = 0; 694 channel_cfg[i].flags = 695 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 696 ssid_bitmap); 697 } 698 } 699 700 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 701 size_t len, u8 *const pos) 702 { 703 static const u8 before_ds_params[] = { 704 WLAN_EID_SSID, 705 WLAN_EID_SUPP_RATES, 706 WLAN_EID_REQUEST, 707 WLAN_EID_EXT_SUPP_RATES, 708 }; 709 size_t offs; 710 u8 *newpos = pos; 711 712 if (!iwl_mvm_rrm_scan_needed(mvm)) { 713 memcpy(newpos, ies, len); 714 return newpos + len; 715 } 716 717 offs = ieee80211_ie_split(ies, len, 718 before_ds_params, 719 ARRAY_SIZE(before_ds_params), 720 0); 721 722 memcpy(newpos, ies, offs); 723 newpos += offs; 724 725 /* Add a placeholder for DS Parameter Set element */ 726 *newpos++ = WLAN_EID_DS_PARAMS; 727 *newpos++ = 1; 728 *newpos++ = 0; 729 730 memcpy(newpos, ies + offs, len - offs); 731 newpos += len - offs; 732 733 return newpos; 734 } 735 736 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 737 { 738 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 739 pos[1] = WFA_TPC_IE_LEN - 2; 740 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 741 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 742 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 743 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 744 pos[6] = 0; 745 /* pos[7] - tx power will be inserted by the FW */ 746 pos[7] = 0; 747 pos[8] = 0; 748 } 749 750 static void 751 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 752 struct ieee80211_scan_ies *ies, 753 struct iwl_mvm_scan_params *params) 754 { 755 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 756 u8 *pos, *newpos; 757 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 758 params->mac_addr : NULL; 759 760 /* 761 * Unfortunately, right now the offload scan doesn't support randomising 762 * within the firmware, so until the firmware API is ready we implement 763 * it in the driver. This means that the scan iterations won't really be 764 * random, only when it's restarted, but at least that helps a bit. 765 */ 766 if (mac_addr) 767 get_random_mask_addr(frame->sa, mac_addr, 768 params->mac_addr_mask); 769 else 770 memcpy(frame->sa, vif->addr, ETH_ALEN); 771 772 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 773 eth_broadcast_addr(frame->da); 774 ether_addr_copy(frame->bssid, params->bssid); 775 frame->seq_ctrl = 0; 776 777 pos = frame->u.probe_req.variable; 778 *pos++ = WLAN_EID_SSID; 779 *pos++ = 0; 780 781 params->preq.mac_header.offset = 0; 782 params->preq.mac_header.len = cpu_to_le16(24 + 2); 783 784 /* Insert ds parameter set element on 2.4 GHz band */ 785 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 786 ies->ies[NL80211_BAND_2GHZ], 787 ies->len[NL80211_BAND_2GHZ], 788 pos); 789 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 790 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 791 pos = newpos; 792 793 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 794 ies->len[NL80211_BAND_5GHZ]); 795 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 796 params->preq.band_data[1].len = 797 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 798 pos += ies->len[NL80211_BAND_5GHZ]; 799 800 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 801 ies->len[NL80211_BAND_6GHZ]); 802 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 803 params->preq.band_data[2].len = 804 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 805 pos += ies->len[NL80211_BAND_6GHZ]; 806 memcpy(pos, ies->common_ies, ies->common_ie_len); 807 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 808 809 if (iwl_mvm_rrm_scan_needed(mvm) && 810 !fw_has_capa(&mvm->fw->ucode_capa, 811 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 812 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 813 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 814 WFA_TPC_IE_LEN); 815 } else { 816 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 817 } 818 } 819 820 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 821 struct iwl_scan_req_lmac *cmd, 822 struct iwl_mvm_scan_params *params) 823 { 824 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 825 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 826 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 827 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 828 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 829 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 830 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 831 } 832 833 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 834 struct ieee80211_scan_ies *ies, 835 int n_channels) 836 { 837 return ((n_ssids <= PROBE_OPTION_MAX) && 838 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 839 (ies->common_ie_len + 840 ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] + 841 ies->len[NL80211_BAND_6GHZ] <= 842 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 843 } 844 845 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 846 struct ieee80211_vif *vif) 847 { 848 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 849 bool low_latency; 850 851 if (iwl_mvm_is_cdb_supported(mvm)) 852 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 853 else 854 low_latency = iwl_mvm_low_latency(mvm); 855 856 /* We can only use EBS if: 857 * 1. the feature is supported; 858 * 2. the last EBS was successful; 859 * 3. if only single scan, the single scan EBS API is supported; 860 * 4. it's not a p2p find operation. 861 * 5. we are not in low latency mode, 862 * or if fragmented ebs is supported by the FW 863 * 6. the VIF is not an AP interface (scan wants survey results) 864 */ 865 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 866 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 867 vif->type != NL80211_IFTYPE_P2P_DEVICE && 868 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) && 869 ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP); 870 } 871 872 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 873 { 874 return params->n_scan_plans == 1 && 875 params->scan_plans[0].iterations == 1; 876 } 877 878 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 879 { 880 return (type == IWL_SCAN_TYPE_FRAGMENTED || 881 type == IWL_SCAN_TYPE_FAST_BALANCE); 882 } 883 884 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 885 struct iwl_mvm_scan_params *params, 886 struct ieee80211_vif *vif) 887 { 888 int flags = 0; 889 890 if (params->n_ssids == 0) 891 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 892 893 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 894 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 895 896 if (iwl_mvm_is_scan_fragmented(params->type)) 897 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 898 899 if (iwl_mvm_rrm_scan_needed(mvm) && 900 fw_has_capa(&mvm->fw->ucode_capa, 901 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 902 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 903 904 if (params->pass_all) 905 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 906 else 907 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 908 909 #ifdef CONFIG_IWLWIFI_DEBUGFS 910 if (mvm->scan_iter_notif_enabled) 911 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 912 #endif 913 914 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 915 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 916 917 if (iwl_mvm_is_regular_scan(params) && 918 vif->type != NL80211_IFTYPE_P2P_DEVICE && 919 !iwl_mvm_is_scan_fragmented(params->type)) 920 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 921 922 return flags; 923 } 924 925 static void 926 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 927 struct iwl_scan_probe_req *src_p_req) 928 { 929 int i; 930 931 p_req->mac_header = src_p_req->mac_header; 932 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 933 p_req->band_data[i] = src_p_req->band_data[i]; 934 p_req->common_data = src_p_req->common_data; 935 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 936 } 937 938 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 939 struct iwl_mvm_scan_params *params) 940 { 941 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 942 struct iwl_scan_probe_req_v1 *preq = 943 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 944 mvm->fw->ucode_capa.n_scan_channels); 945 u32 ssid_bitmap = 0; 946 int i; 947 u8 band; 948 949 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 950 return -EINVAL; 951 952 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 953 954 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 955 cmd->iter_num = cpu_to_le32(1); 956 cmd->n_channels = (u8)params->n_channels; 957 958 cmd->delay = cpu_to_le32(params->delay); 959 960 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 961 vif)); 962 963 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 964 cmd->flags = cpu_to_le32(band); 965 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 966 MAC_FILTER_IN_BEACON); 967 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 968 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 969 970 /* this API uses bits 1-20 instead of 0-19 */ 971 ssid_bitmap <<= 1; 972 973 for (i = 0; i < params->n_scan_plans; i++) { 974 struct cfg80211_sched_scan_plan *scan_plan = 975 ¶ms->scan_plans[i]; 976 977 cmd->schedule[i].delay = 978 cpu_to_le16(scan_plan->interval); 979 cmd->schedule[i].iterations = scan_plan->iterations; 980 cmd->schedule[i].full_scan_mul = 1; 981 } 982 983 /* 984 * If the number of iterations of the last scan plan is set to 985 * zero, it should run infinitely. However, this is not always the case. 986 * For example, when regular scan is requested the driver sets one scan 987 * plan with one iteration. 988 */ 989 if (!cmd->schedule[i - 1].iterations) 990 cmd->schedule[i - 1].iterations = 0xff; 991 992 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 993 cmd->channel_opt[0].flags = 994 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 995 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 996 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 997 cmd->channel_opt[0].non_ebs_ratio = 998 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 999 cmd->channel_opt[1].flags = 1000 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1001 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1002 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1003 cmd->channel_opt[1].non_ebs_ratio = 1004 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1005 } 1006 1007 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1008 params->n_channels, ssid_bitmap, cmd); 1009 1010 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1011 1012 return 0; 1013 } 1014 1015 static int rate_to_scan_rate_flag(unsigned int rate) 1016 { 1017 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1018 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1019 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1020 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1021 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1022 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1023 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1024 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1025 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1026 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1027 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1028 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1029 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1030 }; 1031 1032 return rate_to_scan_rate[rate]; 1033 } 1034 1035 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1036 { 1037 struct ieee80211_supported_band *band; 1038 unsigned int rates = 0; 1039 int i; 1040 1041 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1042 for (i = 0; i < band->n_bitrates; i++) 1043 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1044 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1045 for (i = 0; i < band->n_bitrates; i++) 1046 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1047 1048 /* Set both basic rates and supported rates */ 1049 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1050 1051 return cpu_to_le32(rates); 1052 } 1053 1054 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1055 struct iwl_scan_dwell *dwell) 1056 { 1057 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1058 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1059 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1060 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1061 } 1062 1063 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1064 u32 max_channels) 1065 { 1066 struct ieee80211_supported_band *band; 1067 int i, j = 0; 1068 1069 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1070 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1071 channels[j] = band->channels[i].hw_value; 1072 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1073 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1074 channels[j] = band->channels[i].hw_value; 1075 } 1076 1077 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1078 u32 flags, u8 channel_flags, 1079 u32 max_channels) 1080 { 1081 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1082 struct iwl_scan_config_v1 *cfg = config; 1083 1084 cfg->flags = cpu_to_le32(flags); 1085 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1086 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1087 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1088 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1089 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1090 1091 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1092 1093 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1094 1095 /* This function should not be called when using ADD_STA ver >=12 */ 1096 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1097 1098 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1099 cfg->channel_flags = channel_flags; 1100 1101 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1102 } 1103 1104 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1105 u32 flags, u8 channel_flags, 1106 u32 max_channels) 1107 { 1108 struct iwl_scan_config_v2 *cfg = config; 1109 1110 cfg->flags = cpu_to_le32(flags); 1111 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1112 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1113 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1114 1115 if (iwl_mvm_is_cdb_supported(mvm)) { 1116 enum iwl_mvm_scan_type lb_type, hb_type; 1117 1118 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1119 NL80211_BAND_2GHZ); 1120 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1121 NL80211_BAND_5GHZ); 1122 1123 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1124 cpu_to_le32(scan_timing[lb_type].max_out_time); 1125 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1126 cpu_to_le32(scan_timing[lb_type].suspend_time); 1127 1128 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1129 cpu_to_le32(scan_timing[hb_type].max_out_time); 1130 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1131 cpu_to_le32(scan_timing[hb_type].suspend_time); 1132 } else { 1133 enum iwl_mvm_scan_type type = 1134 iwl_mvm_get_scan_type(mvm, NULL); 1135 1136 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1137 cpu_to_le32(scan_timing[type].max_out_time); 1138 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1139 cpu_to_le32(scan_timing[type].suspend_time); 1140 } 1141 1142 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1143 1144 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1145 1146 /* This function should not be called when using ADD_STA ver >=12 */ 1147 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1148 1149 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1150 cfg->channel_flags = channel_flags; 1151 1152 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1153 } 1154 1155 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1156 { 1157 void *cfg; 1158 int ret, cmd_size; 1159 struct iwl_host_cmd cmd = { 1160 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1161 }; 1162 enum iwl_mvm_scan_type type; 1163 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1164 int num_channels = 1165 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1166 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1167 u32 flags; 1168 u8 channel_flags; 1169 1170 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1171 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1172 1173 if (iwl_mvm_is_cdb_supported(mvm)) { 1174 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1175 NL80211_BAND_2GHZ); 1176 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1177 NL80211_BAND_5GHZ); 1178 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1179 return 0; 1180 } else { 1181 type = iwl_mvm_get_scan_type(mvm, NULL); 1182 if (type == mvm->scan_type) 1183 return 0; 1184 } 1185 1186 if (iwl_mvm_cdb_scan_api(mvm)) 1187 cmd_size = sizeof(struct iwl_scan_config_v2); 1188 else 1189 cmd_size = sizeof(struct iwl_scan_config_v1); 1190 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1191 1192 cfg = kzalloc(cmd_size, GFP_KERNEL); 1193 if (!cfg) 1194 return -ENOMEM; 1195 1196 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1197 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1198 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1199 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1200 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1201 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1202 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1203 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1204 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1205 SCAN_CONFIG_N_CHANNELS(num_channels) | 1206 (iwl_mvm_is_scan_fragmented(type) ? 1207 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1208 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1209 1210 channel_flags = IWL_CHANNEL_FLAG_EBS | 1211 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1212 IWL_CHANNEL_FLAG_EBS_ADD | 1213 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1214 1215 /* 1216 * Check for fragmented scan on LMAC2 - high band. 1217 * LMAC1 - low band is checked above. 1218 */ 1219 if (iwl_mvm_cdb_scan_api(mvm)) { 1220 if (iwl_mvm_is_cdb_supported(mvm)) 1221 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1222 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1223 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1224 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1225 num_channels); 1226 } else { 1227 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1228 num_channels); 1229 } 1230 1231 cmd.data[0] = cfg; 1232 cmd.len[0] = cmd_size; 1233 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1234 1235 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1236 1237 ret = iwl_mvm_send_cmd(mvm, &cmd); 1238 if (!ret) { 1239 mvm->scan_type = type; 1240 mvm->hb_scan_type = hb_type; 1241 } 1242 1243 kfree(cfg); 1244 return ret; 1245 } 1246 1247 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1248 { 1249 struct iwl_scan_config cfg; 1250 struct iwl_host_cmd cmd = { 1251 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1252 .len[0] = sizeof(cfg), 1253 .data[0] = &cfg, 1254 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1255 }; 1256 1257 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1258 return iwl_mvm_legacy_config_scan(mvm); 1259 1260 memset(&cfg, 0, sizeof(cfg)); 1261 1262 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 1263 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1264 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1265 /* 1266 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1267 * version 5. 1268 */ 1269 cfg.bcast_sta_id = 0xff; 1270 } 1271 1272 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1273 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1274 1275 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1276 1277 return iwl_mvm_send_cmd(mvm, &cmd); 1278 } 1279 1280 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1281 { 1282 int i; 1283 1284 for (i = 0; i < mvm->max_scans; i++) 1285 if (mvm->scan_uid_status[i] == status) 1286 return i; 1287 1288 return -ENOENT; 1289 } 1290 1291 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1292 struct iwl_scan_req_umac *cmd, 1293 struct iwl_mvm_scan_params *params) 1294 { 1295 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1296 u8 active_dwell, passive_dwell; 1297 1298 timing = &scan_timing[params->type]; 1299 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1300 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1301 1302 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1303 cmd->v7.adwell_default_n_aps_social = 1304 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1305 cmd->v7.adwell_default_n_aps = 1306 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1307 1308 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1309 cmd->v9.adwell_default_hb_n_aps = 1310 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1311 1312 /* if custom max budget was configured with debugfs */ 1313 if (IWL_MVM_ADWELL_MAX_BUDGET) 1314 cmd->v7.adwell_max_budget = 1315 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1316 else if (params->n_ssids && params->ssids[0].ssid_len) 1317 cmd->v7.adwell_max_budget = 1318 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1319 else 1320 cmd->v7.adwell_max_budget = 1321 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1322 1323 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1324 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1325 cpu_to_le32(timing->max_out_time); 1326 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1327 cpu_to_le32(timing->suspend_time); 1328 1329 if (iwl_mvm_is_cdb_supported(mvm)) { 1330 hb_timing = &scan_timing[params->hb_type]; 1331 1332 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1333 cpu_to_le32(hb_timing->max_out_time); 1334 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1335 cpu_to_le32(hb_timing->suspend_time); 1336 } 1337 1338 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1339 cmd->v7.active_dwell = active_dwell; 1340 cmd->v7.passive_dwell = passive_dwell; 1341 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1342 } else { 1343 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1344 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1345 if (iwl_mvm_is_cdb_supported(mvm)) { 1346 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1347 active_dwell; 1348 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1349 passive_dwell; 1350 } 1351 } 1352 } else { 1353 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1354 cmd->v1.active_dwell = active_dwell; 1355 cmd->v1.passive_dwell = passive_dwell; 1356 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1357 1358 if (iwl_mvm_is_cdb_supported(mvm)) { 1359 hb_timing = &scan_timing[params->hb_type]; 1360 1361 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1362 cpu_to_le32(hb_timing->max_out_time); 1363 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1364 cpu_to_le32(hb_timing->suspend_time); 1365 } 1366 1367 if (iwl_mvm_cdb_scan_api(mvm)) { 1368 cmd->v6.scan_priority = 1369 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1370 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1371 cpu_to_le32(timing->max_out_time); 1372 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1373 cpu_to_le32(timing->suspend_time); 1374 } else { 1375 cmd->v1.scan_priority = 1376 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1377 cmd->v1.max_out_time = 1378 cpu_to_le32(timing->max_out_time); 1379 cmd->v1.suspend_time = 1380 cpu_to_le32(timing->suspend_time); 1381 } 1382 } 1383 1384 if (iwl_mvm_is_regular_scan(params)) 1385 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1386 else 1387 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1388 } 1389 1390 static u32 iwl_mvm_scan_umac_ooc_priority(int type) 1391 { 1392 if (type == IWL_MVM_SCAN_REGULAR) 1393 return IWL_SCAN_PRIORITY_EXT_6; 1394 if (type == IWL_MVM_SCAN_INT_MLO) 1395 return IWL_SCAN_PRIORITY_EXT_4; 1396 1397 return IWL_SCAN_PRIORITY_EXT_2; 1398 } 1399 1400 static void 1401 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1402 struct iwl_scan_general_params_v11 *general_params, 1403 struct iwl_mvm_scan_params *params) 1404 { 1405 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1406 u8 active_dwell, passive_dwell; 1407 1408 timing = &scan_timing[params->type]; 1409 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1410 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1411 1412 general_params->adwell_default_social_chn = 1413 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1414 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1415 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1416 1417 /* if custom max budget was configured with debugfs */ 1418 if (IWL_MVM_ADWELL_MAX_BUDGET) 1419 general_params->adwell_max_budget = 1420 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1421 else if (params->n_ssids && params->ssids[0].ssid_len) 1422 general_params->adwell_max_budget = 1423 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1424 else 1425 general_params->adwell_max_budget = 1426 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1427 1428 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1429 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1430 cpu_to_le32(timing->max_out_time); 1431 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1432 cpu_to_le32(timing->suspend_time); 1433 1434 hb_timing = &scan_timing[params->hb_type]; 1435 1436 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1437 cpu_to_le32(hb_timing->max_out_time); 1438 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1439 cpu_to_le32(hb_timing->suspend_time); 1440 1441 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1442 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1443 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1444 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1445 } 1446 1447 struct iwl_mvm_scan_channel_segment { 1448 u8 start_idx; 1449 u8 end_idx; 1450 u8 first_channel_id; 1451 u8 last_channel_id; 1452 u8 channel_spacing_shift; 1453 u8 band; 1454 }; 1455 1456 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1457 { 1458 .start_idx = 0, 1459 .end_idx = 13, 1460 .first_channel_id = 1, 1461 .last_channel_id = 14, 1462 .channel_spacing_shift = 0, 1463 .band = PHY_BAND_24 1464 }, 1465 { 1466 .start_idx = 14, 1467 .end_idx = 41, 1468 .first_channel_id = 36, 1469 .last_channel_id = 144, 1470 .channel_spacing_shift = 2, 1471 .band = PHY_BAND_5 1472 }, 1473 { 1474 .start_idx = 42, 1475 .end_idx = 50, 1476 .first_channel_id = 149, 1477 .last_channel_id = 181, 1478 .channel_spacing_shift = 2, 1479 .band = PHY_BAND_5 1480 }, 1481 { 1482 .start_idx = 51, 1483 .end_idx = 111, 1484 .first_channel_id = 1, 1485 .last_channel_id = 241, 1486 .channel_spacing_shift = 2, 1487 .band = PHY_BAND_6 1488 }, 1489 }; 1490 1491 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1492 { 1493 int i, index; 1494 1495 if (!channel_id) 1496 return -EINVAL; 1497 1498 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1499 const struct iwl_mvm_scan_channel_segment *ch_segment = 1500 &scan_channel_segments[i]; 1501 u32 ch_offset; 1502 1503 if (ch_segment->band != band || 1504 ch_segment->first_channel_id > channel_id || 1505 ch_segment->last_channel_id < channel_id) 1506 continue; 1507 1508 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1509 ch_segment->channel_spacing_shift; 1510 1511 index = scan_channel_segments[i].start_idx + ch_offset; 1512 if (index < IWL_SCAN_NUM_CHANNELS) 1513 return index; 1514 1515 break; 1516 } 1517 1518 return -EINVAL; 1519 } 1520 1521 static const u8 p2p_go_friendly_chs[] = { 1522 36, 40, 44, 48, 149, 153, 157, 161, 165, 1523 }; 1524 1525 static const u8 social_chs[] = { 1526 1, 6, 11 1527 }; 1528 1529 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1530 u8 ch_id, u8 band, u8 *ch_bitmap, 1531 size_t bitmap_n_entries) 1532 { 1533 int i; 1534 1535 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1536 return; 1537 1538 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1539 if (p2p_go_friendly_chs[i] == ch_id) { 1540 int ch_idx, bitmap_idx; 1541 1542 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1543 if (ch_idx < 0) 1544 return; 1545 1546 bitmap_idx = ch_idx / 8; 1547 if (bitmap_idx >= bitmap_n_entries) 1548 return; 1549 1550 ch_idx = ch_idx % 8; 1551 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1552 1553 return; 1554 } 1555 } 1556 } 1557 1558 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1559 { 1560 int i; 1561 u32 flags = 0; 1562 1563 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1564 goto out; 1565 1566 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1567 if (p2p_go_friendly_chs[i] == ch_id) { 1568 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1569 break; 1570 } 1571 } 1572 1573 if (flags) 1574 goto out; 1575 1576 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1577 if (social_chs[i] == ch_id) { 1578 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1579 break; 1580 } 1581 } 1582 1583 out: 1584 return flags; 1585 } 1586 1587 static void 1588 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1589 struct ieee80211_channel **channels, 1590 int n_channels, u32 flags, 1591 struct iwl_scan_channel_cfg_umac *channel_cfg) 1592 { 1593 int i; 1594 1595 for (i = 0; i < n_channels; i++) { 1596 channel_cfg[i].flags = cpu_to_le32(flags); 1597 channel_cfg[i].channel_num = channels[i]->hw_value; 1598 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1599 enum nl80211_band band = channels[i]->band; 1600 1601 channel_cfg[i].v2.band = 1602 iwl_mvm_phy_band_from_nl80211(band); 1603 channel_cfg[i].v2.iter_count = 1; 1604 channel_cfg[i].v2.iter_interval = 0; 1605 } else { 1606 channel_cfg[i].v1.iter_count = 1; 1607 channel_cfg[i].v1.iter_interval = 0; 1608 } 1609 } 1610 } 1611 1612 static void 1613 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1614 struct ieee80211_channel **channels, 1615 struct iwl_scan_channel_params_v4 *cp, 1616 int n_channels, u32 flags, 1617 enum nl80211_iftype vif_type) 1618 { 1619 u8 *bitmap = cp->adwell_ch_override_bitmap; 1620 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1621 int i; 1622 1623 for (i = 0; i < n_channels; i++) { 1624 enum nl80211_band band = channels[i]->band; 1625 struct iwl_scan_channel_cfg_umac *cfg = 1626 &cp->channel_config[i]; 1627 1628 cfg->flags = cpu_to_le32(flags); 1629 cfg->channel_num = channels[i]->hw_value; 1630 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1631 cfg->v2.iter_count = 1; 1632 cfg->v2.iter_interval = 0; 1633 1634 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1635 cfg->channel_num, 1636 cfg->v2.band, bitmap, 1637 bitmap_n_entries); 1638 } 1639 } 1640 1641 static void 1642 iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm, 1643 struct ieee80211_channel **channels, 1644 struct iwl_scan_channel_params_v7 *cp, 1645 int n_channels, u32 flags, 1646 enum nl80211_iftype vif_type, u32 version) 1647 { 1648 int i; 1649 1650 for (i = 0; i < n_channels; i++) { 1651 enum nl80211_band band = channels[i]->band; 1652 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1653 u32 n_aps_flag = 1654 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1655 channels[i]->hw_value); 1656 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band); 1657 1658 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1659 cfg->channel_num = channels[i]->hw_value; 1660 if (cfg80211_channel_is_psc(channels[i])) 1661 cfg->flags = 0; 1662 1663 if (band == NL80211_BAND_6GHZ) { 1664 /* 6 GHz channels should only appear in a scan request 1665 * that has scan_6ghz set. The only exception is MLO 1666 * scan, which has to be passive. 1667 */ 1668 WARN_ON_ONCE(cfg->flags != 0); 1669 cfg->flags = 1670 cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE); 1671 } 1672 1673 cfg->v2.iter_count = 1; 1674 cfg->v2.iter_interval = 0; 1675 if (version < 17) 1676 cfg->v2.band = iwl_band; 1677 else 1678 cfg->flags |= cpu_to_le32((iwl_band << 1679 IWL_CHAN_CFG_FLAGS_BAND_POS)); 1680 } 1681 } 1682 1683 static void 1684 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1685 struct iwl_mvm_scan_params *params, 1686 struct iwl_scan_probe_params_v4 *pp) 1687 { 1688 int j, idex_s = 0, idex_b = 0; 1689 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1690 params->scan_6ghz_params; 1691 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1692 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1693 1694 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1695 j++) { 1696 if (!params->ssids[j].ssid_len) 1697 continue; 1698 1699 pp->short_ssid[idex_s] = 1700 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1701 params->ssids[j].ssid_len)); 1702 1703 if (hidden_supported) { 1704 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1705 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1706 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1707 params->ssids[j].ssid_len); 1708 } 1709 idex_s++; 1710 } 1711 1712 /* 1713 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1714 * collocated parameters. This might not be optimal, as this processing 1715 * does not (yet) correspond to the actual channels, so it is possible 1716 * that some entries would be left out. 1717 * 1718 * TODO: improve this logic. 1719 */ 1720 for (j = 0; j < params->n_6ghz_params; j++) { 1721 int k; 1722 1723 /* First, try to place the short SSID */ 1724 if (scan_6ghz_params[j].short_ssid_valid) { 1725 for (k = 0; k < idex_s; k++) { 1726 if (pp->short_ssid[k] == 1727 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1728 break; 1729 } 1730 1731 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1732 pp->short_ssid[idex_s++] = 1733 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1734 } 1735 } 1736 1737 /* try to place BSSID for the same entry */ 1738 for (k = 0; k < idex_b; k++) { 1739 if (!memcmp(&pp->bssid_array[k], 1740 scan_6ghz_params[j].bssid, ETH_ALEN)) 1741 break; 1742 } 1743 1744 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE && 1745 !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid), 1746 "scan: invalid BSSID at index %u, index_b=%u\n", 1747 j, idex_b)) { 1748 memcpy(&pp->bssid_array[idex_b++], 1749 scan_6ghz_params[j].bssid, ETH_ALEN); 1750 } 1751 } 1752 1753 pp->short_ssid_num = idex_s; 1754 pp->bssid_num = idex_b; 1755 } 1756 1757 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */ 1758 static u32 1759 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm, 1760 struct iwl_mvm_scan_params *params, 1761 u32 n_channels, 1762 struct iwl_scan_probe_params_v4 *pp, 1763 struct iwl_scan_channel_params_v7 *cp, 1764 enum nl80211_iftype vif_type, 1765 u32 version) 1766 { 1767 int i; 1768 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1769 params->scan_6ghz_params; 1770 u32 ch_cnt; 1771 1772 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1773 struct iwl_scan_channel_cfg_umac *cfg = 1774 &cp->channel_config[ch_cnt]; 1775 1776 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1777 u8 k, n_s_ssids = 0, n_bssids = 0; 1778 u8 max_s_ssids, max_bssids; 1779 bool force_passive = false, found = false, allow_passive = true, 1780 unsolicited_probe_on_chan = false, psc_no_listen = false; 1781 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 1782 1783 /* 1784 * Avoid performing passive scan on non PSC channels unless the 1785 * scan is specifically a passive scan, i.e., no SSIDs 1786 * configured in the scan command. 1787 */ 1788 if (!cfg80211_channel_is_psc(params->channels[i]) && 1789 !params->n_6ghz_params && params->n_ssids) 1790 continue; 1791 1792 cfg->channel_num = params->channels[i]->hw_value; 1793 if (version < 17) 1794 cfg->v2.band = PHY_BAND_6; 1795 else 1796 cfg->flags |= cpu_to_le32(PHY_BAND_6 << 1797 IWL_CHAN_CFG_FLAGS_BAND_POS); 1798 1799 cfg->v5.iter_count = 1; 1800 cfg->v5.iter_interval = 0; 1801 1802 for (u32 j = 0; j < params->n_6ghz_params; j++) { 1803 s8 tmp_psd_20; 1804 1805 if (!(scan_6ghz_params[j].channel_idx == i)) 1806 continue; 1807 1808 unsolicited_probe_on_chan |= 1809 scan_6ghz_params[j].unsolicited_probe; 1810 1811 /* Use the highest PSD value allowed as advertised by 1812 * APs for this channel 1813 */ 1814 tmp_psd_20 = scan_6ghz_params[j].psd_20; 1815 if (tmp_psd_20 != 1816 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED && 1817 (psd_20 == 1818 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED || 1819 psd_20 < tmp_psd_20)) 1820 psd_20 = tmp_psd_20; 1821 1822 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1823 } 1824 1825 /* 1826 * In the following cases apply passive scan: 1827 * 1. Non fragmented scan: 1828 * - PSC channel with NO_LISTEN_FLAG on should be treated 1829 * like non PSC channel 1830 * - Non PSC channel with more than 3 short SSIDs or more 1831 * than 9 BSSIDs. 1832 * - Non PSC Channel with unsolicited probe response and 1833 * more than 2 short SSIDs or more than 6 BSSIDs. 1834 * - PSC channel with more than 2 short SSIDs or more than 1835 * 6 BSSIDs. 1836 * 3. Fragmented scan: 1837 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1838 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1839 * - Non PSC channel with unsolicited probe response and 1840 * more than 1 SSID or more than 3 BSSIDs. 1841 */ 1842 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1843 if (!cfg80211_channel_is_psc(params->channels[i]) || 1844 psc_no_listen) { 1845 if (unsolicited_probe_on_chan) { 1846 max_s_ssids = 2; 1847 max_bssids = 6; 1848 } else { 1849 max_s_ssids = 3; 1850 max_bssids = 9; 1851 } 1852 } else { 1853 max_s_ssids = 2; 1854 max_bssids = 6; 1855 } 1856 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1857 max_s_ssids = 1; 1858 max_bssids = 3; 1859 } else { 1860 if (unsolicited_probe_on_chan) { 1861 max_s_ssids = 1; 1862 max_bssids = 3; 1863 } else { 1864 max_s_ssids = 2; 1865 max_bssids = 6; 1866 } 1867 } 1868 1869 /* 1870 * The optimize the scan time, i.e., reduce the scan dwell time 1871 * on each channel, the below logic tries to set 3 direct BSSID 1872 * probe requests for each broadcast probe request with a short 1873 * SSID. 1874 * TODO: improve this logic 1875 */ 1876 for (u32 j = 0; j < params->n_6ghz_params; j++) { 1877 if (!(scan_6ghz_params[j].channel_idx == i)) 1878 continue; 1879 1880 found = false; 1881 1882 for (k = 0; 1883 k < pp->short_ssid_num && n_s_ssids < max_s_ssids; 1884 k++) { 1885 if (!scan_6ghz_params[j].unsolicited_probe && 1886 le32_to_cpu(pp->short_ssid[k]) == 1887 scan_6ghz_params[j].short_ssid) { 1888 /* Relevant short SSID bit set */ 1889 if (s_ssid_bitmap & BIT(k)) { 1890 found = true; 1891 break; 1892 } 1893 1894 /* 1895 * Prefer creating BSSID entries unless 1896 * the short SSID probe can be done in 1897 * the same channel dwell iteration. 1898 * 1899 * We also need to create a short SSID 1900 * entry for any hidden AP. 1901 */ 1902 if (3 * n_s_ssids > n_bssids && 1903 !pp->direct_scan[k].len) 1904 break; 1905 1906 /* Hidden AP, cannot do passive scan */ 1907 if (pp->direct_scan[k].len) 1908 allow_passive = false; 1909 1910 s_ssid_bitmap |= BIT(k); 1911 n_s_ssids++; 1912 found = true; 1913 break; 1914 } 1915 } 1916 1917 if (found) 1918 continue; 1919 1920 for (k = 0; k < pp->bssid_num; k++) { 1921 if (!memcmp(&pp->bssid_array[k], 1922 scan_6ghz_params[j].bssid, 1923 ETH_ALEN)) { 1924 if (!(bssid_bitmap & BIT(k))) { 1925 if (n_bssids < max_bssids) { 1926 bssid_bitmap |= BIT(k); 1927 n_bssids++; 1928 } else { 1929 force_passive = TRUE; 1930 } 1931 } 1932 break; 1933 } 1934 } 1935 } 1936 1937 if (cfg80211_channel_is_psc(params->channels[i]) && 1938 psc_no_listen) 1939 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1940 1941 if (unsolicited_probe_on_chan) 1942 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1943 1944 if ((allow_passive && force_passive) || 1945 (!(bssid_bitmap | s_ssid_bitmap) && 1946 !cfg80211_channel_is_psc(params->channels[i]))) 1947 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1948 else 1949 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1950 1951 cfg->flags |= cpu_to_le32(flags); 1952 if (version >= 17) 1953 cfg->v5.psd_20 = psd_20; 1954 1955 ch_cnt++; 1956 } 1957 1958 if (params->n_channels > ch_cnt) 1959 IWL_DEBUG_SCAN(mvm, 1960 "6GHz: reducing number channels: (%u->%u)\n", 1961 params->n_channels, ch_cnt); 1962 1963 return ch_cnt; 1964 } 1965 1966 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1967 struct iwl_mvm_scan_params *params, 1968 struct ieee80211_vif *vif) 1969 { 1970 u8 flags = 0; 1971 1972 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1973 1974 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1975 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1976 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1977 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1978 1979 /* set fragmented ebs for fragmented scan on HB channels */ 1980 if ((!iwl_mvm_is_cdb_supported(mvm) && 1981 iwl_mvm_is_scan_fragmented(params->type)) || 1982 (iwl_mvm_is_cdb_supported(mvm) && 1983 iwl_mvm_is_scan_fragmented(params->hb_type))) 1984 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1985 1986 /* 1987 * force EBS in case the scan is a fragmented and there is a need to take P2P 1988 * GO operation into consideration during scan operation. 1989 */ 1990 if ((!iwl_mvm_is_cdb_supported(mvm) && 1991 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1992 (iwl_mvm_is_cdb_supported(mvm) && 1993 iwl_mvm_is_scan_fragmented(params->hb_type) && 1994 params->respect_p2p_go_hb)) { 1995 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1996 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1997 } 1998 1999 return flags; 2000 } 2001 2002 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 2003 struct iwl_mvm_scan_params *params, 2004 struct ieee80211_vif *vif) 2005 { 2006 struct ieee80211_supported_band *sband = 2007 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2008 u32 n_disabled, i; 2009 2010 params->enable_6ghz_passive = false; 2011 2012 if (params->scan_6ghz) 2013 return; 2014 2015 if (!fw_has_capa(&mvm->fw->ucode_capa, 2016 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 2017 IWL_DEBUG_SCAN(mvm, 2018 "6GHz passive scan: Not supported by FW\n"); 2019 return; 2020 } 2021 2022 /* 6GHz passive scan allowed only on station interface */ 2023 if (vif->type != NL80211_IFTYPE_STATION) { 2024 IWL_DEBUG_SCAN(mvm, 2025 "6GHz passive scan: not station interface\n"); 2026 return; 2027 } 2028 2029 /* 2030 * 6GHz passive scan is allowed in a defined time interval following HW 2031 * reset or resume flow, or while not associated and a large interval 2032 * has passed since the last 6GHz passive scan. 2033 */ 2034 if ((vif->cfg.assoc || 2035 time_after(mvm->last_6ghz_passive_scan_jiffies + 2036 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 2037 (time_before(mvm->last_reset_or_resume_time_jiffies + 2038 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 2039 jiffies))) { 2040 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 2041 vif->cfg.assoc ? "associated" : 2042 "timeout did not expire"); 2043 return; 2044 } 2045 2046 /* not enough channels in the regular scan request */ 2047 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 2048 IWL_DEBUG_SCAN(mvm, 2049 "6GHz passive scan: not enough channels\n"); 2050 return; 2051 } 2052 2053 for (i = 0; i < params->n_ssids; i++) { 2054 if (!params->ssids[i].ssid_len) 2055 break; 2056 } 2057 2058 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 2059 if (i == params->n_ssids) { 2060 IWL_DEBUG_SCAN(mvm, 2061 "6GHz passive scan: no wildcard SSID\n"); 2062 return; 2063 } 2064 2065 if (!sband || !sband->n_channels) { 2066 IWL_DEBUG_SCAN(mvm, 2067 "6GHz passive scan: no 6GHz channels\n"); 2068 return; 2069 } 2070 2071 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 2072 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 2073 n_disabled++; 2074 } 2075 2076 /* 2077 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 2078 * scan 2079 */ 2080 if (n_disabled != sband->n_channels) { 2081 IWL_DEBUG_SCAN(mvm, 2082 "6GHz passive scan: 6GHz channels enabled\n"); 2083 return; 2084 } 2085 2086 /* all conditions to enable 6ghz passive scan are satisfied */ 2087 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2088 params->enable_6ghz_passive = true; 2089 } 2090 2091 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2092 struct iwl_mvm_scan_params *params, 2093 struct ieee80211_vif *vif, 2094 int type) 2095 { 2096 u16 flags = 0; 2097 2098 /* 2099 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2100 * if there is a single SSID which is not the broadcast SSID, assume 2101 * that the scan is intended for roaming purposes and thus enable Rx on 2102 * all chains to improve chances of hearing the beacons/probe responses. 2103 */ 2104 if (params->n_ssids == 0) 2105 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2106 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2107 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2108 2109 if (iwl_mvm_is_scan_fragmented(params->type)) 2110 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2111 2112 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2113 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2114 2115 if (params->pass_all) 2116 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2117 else 2118 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2119 2120 if (!iwl_mvm_is_regular_scan(params)) 2121 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2122 2123 if (params->iter_notif || 2124 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2125 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2126 2127 if (IWL_MVM_ADWELL_ENABLE) 2128 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2129 2130 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2131 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2132 2133 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2134 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2135 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2136 2137 if (params->enable_6ghz_passive) 2138 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2139 2140 if (iwl_mvm_is_oce_supported(mvm) && 2141 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2142 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2143 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2144 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2145 2146 return flags; 2147 } 2148 2149 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2150 struct iwl_mvm_scan_params *params, 2151 struct ieee80211_vif *vif, int type, 2152 u16 gen_flags) 2153 { 2154 u8 flags = 0; 2155 2156 if (iwl_mvm_is_cdb_supported(mvm)) { 2157 if (params->respect_p2p_go) 2158 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2159 if (params->respect_p2p_go_hb) 2160 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2161 } else { 2162 if (params->respect_p2p_go) 2163 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2164 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2165 } 2166 2167 if (params->scan_6ghz && 2168 fw_has_capa(&mvm->fw->ucode_capa, 2169 IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT)) 2170 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT; 2171 2172 /* Passive and AP interface -> ACS (automatic channel selection) */ 2173 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE && 2174 ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP && 2175 iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 2176 0) >= 1) 2177 flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS; 2178 2179 return flags; 2180 } 2181 2182 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2183 struct iwl_mvm_scan_params *params, 2184 struct ieee80211_vif *vif) 2185 { 2186 u16 flags = 0; 2187 2188 if (params->n_ssids == 0) 2189 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2190 2191 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2192 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2193 2194 if (iwl_mvm_is_scan_fragmented(params->type)) 2195 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2196 2197 if (iwl_mvm_is_cdb_supported(mvm) && 2198 iwl_mvm_is_scan_fragmented(params->hb_type)) 2199 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2200 2201 if (iwl_mvm_rrm_scan_needed(mvm) && 2202 fw_has_capa(&mvm->fw->ucode_capa, 2203 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2204 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2205 2206 if (params->pass_all) 2207 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2208 else 2209 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2210 2211 if (!iwl_mvm_is_regular_scan(params)) 2212 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2213 2214 if (params->iter_notif) 2215 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2216 2217 #ifdef CONFIG_IWLWIFI_DEBUGFS 2218 if (mvm->scan_iter_notif_enabled) 2219 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2220 #endif 2221 2222 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2223 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2224 2225 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2226 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2227 2228 /* 2229 * Extended dwell is relevant only for low band to start with, as it is 2230 * being used for social channles only (1, 6, 11), so we can check 2231 * only scan type on low band also for CDB. 2232 */ 2233 if (iwl_mvm_is_regular_scan(params) && 2234 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2235 !iwl_mvm_is_scan_fragmented(params->type) && 2236 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2237 !iwl_mvm_is_oce_supported(mvm)) 2238 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2239 2240 if (iwl_mvm_is_oce_supported(mvm)) { 2241 if ((params->flags & 2242 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2243 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2244 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2245 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2246 * the same bit, we need to make sure that we use this bit here 2247 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2248 * used. */ 2249 if ((params->flags & 2250 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2251 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2252 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2253 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2254 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2255 } 2256 2257 return flags; 2258 } 2259 2260 static int 2261 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2262 struct iwl_scan_umac_schedule *schedule, 2263 __le16 *delay) 2264 { 2265 int i; 2266 if (WARN_ON(!params->n_scan_plans || 2267 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2268 return -EINVAL; 2269 2270 for (i = 0; i < params->n_scan_plans; i++) { 2271 struct cfg80211_sched_scan_plan *scan_plan = 2272 ¶ms->scan_plans[i]; 2273 2274 schedule[i].iter_count = scan_plan->iterations; 2275 schedule[i].interval = 2276 cpu_to_le16(scan_plan->interval); 2277 } 2278 2279 /* 2280 * If the number of iterations of the last scan plan is set to 2281 * zero, it should run infinitely. However, this is not always the case. 2282 * For example, when regular scan is requested the driver sets one scan 2283 * plan with one iteration. 2284 */ 2285 if (!schedule[params->n_scan_plans - 1].iter_count) 2286 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2287 2288 *delay = cpu_to_le16(params->delay); 2289 2290 return 0; 2291 } 2292 2293 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2294 struct iwl_mvm_scan_params *params, 2295 int type, int uid) 2296 { 2297 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2298 struct iwl_scan_umac_chan_param *chan_param; 2299 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2300 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2301 mvm->fw->ucode_capa.n_scan_channels; 2302 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2303 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2304 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2305 struct iwl_ssid_ie *direct_scan; 2306 int ret = 0; 2307 u32 ssid_bitmap = 0; 2308 u8 channel_flags = 0; 2309 u16 gen_flags; 2310 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2311 2312 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2313 2314 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2315 2316 cmd->uid = cpu_to_le32(uid); 2317 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2318 cmd->general_flags = cpu_to_le16(gen_flags); 2319 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2320 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2321 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2322 IWL_SCAN_NUM_OF_FRAGS; 2323 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2324 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2325 IWL_SCAN_NUM_OF_FRAGS; 2326 2327 cmd->v8.general_flags2 = 2328 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2329 } 2330 2331 cmd->scan_start_mac_id = scan_vif->id; 2332 2333 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2334 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2335 2336 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2337 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2338 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2339 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2340 2341 /* set fragmented ebs for fragmented scan on HB channels */ 2342 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2343 if (gen_flags & 2344 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2345 (!iwl_mvm_is_cdb_supported(mvm) && 2346 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2347 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2348 } 2349 } 2350 2351 chan_param->flags = channel_flags; 2352 chan_param->count = params->n_channels; 2353 2354 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2355 &tail_v2->delay); 2356 if (ret) 2357 return ret; 2358 2359 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2360 tail_v2->preq = params->preq; 2361 direct_scan = tail_v2->direct_scan; 2362 } else { 2363 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2364 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2365 ¶ms->preq); 2366 direct_scan = tail_v1->direct_scan; 2367 } 2368 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2369 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2370 params->n_channels, ssid_bitmap, 2371 cmd_data); 2372 return 0; 2373 } 2374 2375 static void 2376 iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm, 2377 struct iwl_mvm_scan_params *params, 2378 struct ieee80211_vif *vif, 2379 struct iwl_scan_general_params_v11 *gp, 2380 u16 gen_flags, u8 gen_flags2, 2381 u32 version) 2382 { 2383 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2384 2385 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2386 2387 IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n", 2388 gen_flags, gen_flags2); 2389 2390 gp->flags = cpu_to_le16(gen_flags); 2391 gp->flags2 = gen_flags2; 2392 2393 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2394 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2395 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2396 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2397 2398 mvm->scan_link_id = 0; 2399 2400 if (version < 16) { 2401 gp->scan_start_mac_or_link_id = scan_vif->id; 2402 } else { 2403 struct iwl_mvm_vif_link_info *link_info = 2404 scan_vif->link[params->tsf_report_link_id]; 2405 2406 mvm->scan_link_id = params->tsf_report_link_id; 2407 if (!WARN_ON(!link_info)) 2408 gp->scan_start_mac_or_link_id = link_info->fw_link_id; 2409 } 2410 } 2411 2412 static void 2413 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2414 struct iwl_scan_probe_params_v3 *pp) 2415 { 2416 pp->preq = params->preq; 2417 pp->ssid_num = params->n_ssids; 2418 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2419 } 2420 2421 static void 2422 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2423 struct iwl_scan_probe_params_v4 *pp, 2424 u32 *bitmap_ssid) 2425 { 2426 pp->preq = params->preq; 2427 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2428 } 2429 2430 static void 2431 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2432 struct iwl_mvm_scan_params *params, 2433 struct ieee80211_vif *vif, 2434 struct iwl_scan_channel_params_v4 *cp, 2435 u32 channel_cfg_flags) 2436 { 2437 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2438 cp->count = params->n_channels; 2439 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2440 2441 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2442 params->n_channels, 2443 channel_cfg_flags, 2444 vif->type); 2445 } 2446 2447 static void 2448 iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm, 2449 struct iwl_mvm_scan_params *params, 2450 struct ieee80211_vif *vif, 2451 struct iwl_scan_channel_params_v7 *cp, 2452 u32 channel_cfg_flags, 2453 u32 version) 2454 { 2455 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2456 cp->count = params->n_channels; 2457 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2458 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2459 2460 iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp, 2461 params->n_channels, 2462 channel_cfg_flags, 2463 vif->type, version); 2464 2465 if (params->enable_6ghz_passive) { 2466 struct ieee80211_supported_band *sband = 2467 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2468 u32 i; 2469 2470 for (i = 0; i < sband->n_channels; i++) { 2471 struct ieee80211_channel *channel = 2472 &sband->channels[i]; 2473 2474 struct iwl_scan_channel_cfg_umac *cfg = 2475 &cp->channel_config[cp->count]; 2476 2477 if (!cfg80211_channel_is_psc(channel)) 2478 continue; 2479 2480 cfg->channel_num = channel->hw_value; 2481 cfg->v5.iter_count = 1; 2482 cfg->v5.iter_interval = 0; 2483 2484 if (version < 17) { 2485 cfg->flags = 0; 2486 cfg->v2.band = PHY_BAND_6; 2487 } else { 2488 cfg->flags = cpu_to_le32(PHY_BAND_6 << 2489 IWL_CHAN_CFG_FLAGS_BAND_POS); 2490 cfg->v5.psd_20 = 2491 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 2492 } 2493 cp->count++; 2494 } 2495 } 2496 } 2497 2498 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2499 struct iwl_mvm_scan_params *params, int type, 2500 int uid) 2501 { 2502 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2503 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2504 int ret; 2505 u16 gen_flags; 2506 2507 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2508 cmd->uid = cpu_to_le32(uid); 2509 2510 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2511 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2512 &scan_p->general_params, 2513 gen_flags, 0, 12); 2514 2515 ret = iwl_mvm_fill_scan_sched_params(params, 2516 scan_p->periodic_params.schedule, 2517 &scan_p->periodic_params.delay); 2518 if (ret) 2519 return ret; 2520 2521 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2522 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2523 &scan_p->channel_params, 0); 2524 2525 return 0; 2526 } 2527 2528 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2529 struct ieee80211_vif *vif, 2530 struct iwl_mvm_scan_params *params, 2531 int type, int uid, u32 version) 2532 { 2533 struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd; 2534 struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params; 2535 struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params; 2536 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2537 int ret; 2538 u16 gen_flags; 2539 u8 gen_flags2; 2540 u32 bitmap_ssid = 0; 2541 2542 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2543 cmd->uid = cpu_to_le32(uid); 2544 2545 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2546 2547 if (version >= 15) 2548 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type, 2549 gen_flags); 2550 else 2551 gen_flags2 = 0; 2552 2553 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2554 &scan_p->general_params, 2555 gen_flags, gen_flags2, version); 2556 2557 ret = iwl_mvm_fill_scan_sched_params(params, 2558 scan_p->periodic_params.schedule, 2559 &scan_p->periodic_params.delay); 2560 if (ret) 2561 return ret; 2562 2563 if (!params->scan_6ghz) { 2564 iwl_mvm_scan_umac_fill_probe_p_v4(params, 2565 &scan_p->probe_params, 2566 &bitmap_ssid); 2567 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif, 2568 &scan_p->channel_params, 2569 bitmap_ssid, 2570 version); 2571 return 0; 2572 } else { 2573 pb->preq = params->preq; 2574 } 2575 2576 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2577 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2578 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2579 2580 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2581 2582 cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params, 2583 params->n_channels, 2584 pb, cp, vif->type, 2585 version); 2586 if (!cp->count) 2587 return -EINVAL; 2588 2589 if (!params->n_ssids || 2590 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2591 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2592 2593 return 0; 2594 } 2595 2596 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2597 struct iwl_mvm_scan_params *params, int type, 2598 int uid) 2599 { 2600 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2601 } 2602 2603 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2604 struct iwl_mvm_scan_params *params, int type, 2605 int uid) 2606 { 2607 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2608 } 2609 2610 static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2611 struct iwl_mvm_scan_params *params, int type, 2612 int uid) 2613 { 2614 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16); 2615 } 2616 2617 static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2618 struct iwl_mvm_scan_params *params, int type, 2619 int uid) 2620 { 2621 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17); 2622 } 2623 2624 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2625 { 2626 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2627 } 2628 2629 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2630 { 2631 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2632 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2633 2634 /* This looks a bit arbitrary, but the idea is that if we run 2635 * out of possible simultaneous scans and the userspace is 2636 * trying to run a scan type that is already running, we 2637 * return -EBUSY. But if the userspace wants to start a 2638 * different type of scan, we stop the opposite type to make 2639 * space for the new request. The reason is backwards 2640 * compatibility with old wpa_supplicant that wouldn't stop a 2641 * scheduled scan before starting a normal scan. 2642 */ 2643 2644 /* FW supports only a single periodic scan */ 2645 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2646 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2647 return -EBUSY; 2648 2649 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2650 return 0; 2651 2652 /* Use a switch, even though this is a bitmask, so that more 2653 * than one bits set will fall in default and we will warn. 2654 */ 2655 switch (type) { 2656 case IWL_MVM_SCAN_REGULAR: 2657 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2658 return -EBUSY; 2659 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2660 case IWL_MVM_SCAN_SCHED: 2661 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2662 return -EBUSY; 2663 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2664 case IWL_MVM_SCAN_NETDETECT: 2665 /* For non-unified images, there's no need to stop 2666 * anything for net-detect since the firmware is 2667 * restarted anyway. This way, any sched scans that 2668 * were running will be restarted when we resume. 2669 */ 2670 if (!unified_image) 2671 return 0; 2672 2673 /* If this is a unified image and we ran out of scans, 2674 * we need to stop something. Prefer stopping regular 2675 * scans, because the results are useless at this 2676 * point, and we should be able to keep running 2677 * another scheduled scan while suspended. 2678 */ 2679 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2680 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2681 true); 2682 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2683 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2684 true); 2685 /* Something is wrong if no scan was running but we 2686 * ran out of scans. 2687 */ 2688 fallthrough; 2689 default: 2690 WARN_ON(1); 2691 break; 2692 } 2693 2694 return -EIO; 2695 } 2696 2697 #define SCAN_TIMEOUT 30000 2698 2699 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2700 { 2701 struct delayed_work *delayed_work = to_delayed_work(work); 2702 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2703 scan_timeout_dwork); 2704 2705 IWL_ERR(mvm, "regular scan timed out\n"); 2706 2707 iwl_force_nmi(mvm->trans); 2708 } 2709 2710 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2711 struct iwl_mvm_scan_params *params, 2712 struct ieee80211_vif *vif) 2713 { 2714 if (iwl_mvm_is_cdb_supported(mvm)) { 2715 params->type = 2716 iwl_mvm_get_scan_type_band(mvm, vif, 2717 NL80211_BAND_2GHZ); 2718 params->hb_type = 2719 iwl_mvm_get_scan_type_band(mvm, vif, 2720 NL80211_BAND_5GHZ); 2721 } else { 2722 params->type = iwl_mvm_get_scan_type(mvm, vif); 2723 } 2724 } 2725 2726 struct iwl_scan_umac_handler { 2727 u8 version; 2728 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2729 struct iwl_mvm_scan_params *params, int type, int uid); 2730 }; 2731 2732 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2733 .version = _ver, \ 2734 .handler = iwl_mvm_scan_umac_v##_ver, \ 2735 } 2736 2737 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2738 /* set the newest version first to shorten the list traverse time */ 2739 IWL_SCAN_UMAC_HANDLER(17), 2740 IWL_SCAN_UMAC_HANDLER(16), 2741 IWL_SCAN_UMAC_HANDLER(15), 2742 IWL_SCAN_UMAC_HANDLER(14), 2743 IWL_SCAN_UMAC_HANDLER(12), 2744 }; 2745 2746 static void iwl_mvm_mei_scan_work(struct work_struct *wk) 2747 { 2748 struct iwl_mei_scan_filter *scan_filter = 2749 container_of(wk, struct iwl_mei_scan_filter, scan_work); 2750 struct iwl_mvm *mvm = 2751 container_of(scan_filter, struct iwl_mvm, mei_scan_filter); 2752 struct iwl_mvm_csme_conn_info *info; 2753 struct sk_buff *skb; 2754 u8 bssid[ETH_ALEN]; 2755 2756 mutex_lock(&mvm->mutex); 2757 info = iwl_mvm_get_csme_conn_info(mvm); 2758 memcpy(bssid, info->conn_info.bssid, ETH_ALEN); 2759 mutex_unlock(&mvm->mutex); 2760 2761 while ((skb = skb_dequeue(&scan_filter->scan_res))) { 2762 struct ieee80211_mgmt *mgmt = (void *)skb->data; 2763 2764 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) 2765 ieee80211_rx_irqsafe(mvm->hw, skb); 2766 else 2767 kfree_skb(skb); 2768 } 2769 } 2770 2771 void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) 2772 { 2773 skb_queue_head_init(&mei_scan_filter->scan_res); 2774 INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); 2775 } 2776 2777 /* In case CSME is connected and has link protection set, this function will 2778 * override the scan request to scan only the associated channel and only for 2779 * the associated SSID. 2780 */ 2781 static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, 2782 struct iwl_mvm_scan_params *params) 2783 { 2784 struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); 2785 struct iwl_mei_conn_info *conn_info; 2786 struct ieee80211_channel *chan; 2787 int scan_iters, i; 2788 2789 if (!info) { 2790 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); 2791 return; 2792 } 2793 2794 conn_info = &info->conn_info; 2795 if (!info->conn_info.lp_state || !info->conn_info.ssid_len) 2796 return; 2797 2798 if (!params->n_channels || !params->n_ssids) 2799 return; 2800 2801 mvm->mei_scan_filter.is_mei_limited_scan = true; 2802 2803 chan = ieee80211_get_channel(mvm->hw->wiphy, 2804 ieee80211_channel_to_frequency(conn_info->channel, 2805 conn_info->band)); 2806 if (!chan) { 2807 IWL_DEBUG_SCAN(mvm, 2808 "Failed to get CSME channel (chan=%u band=%u)\n", 2809 conn_info->channel, conn_info->band); 2810 return; 2811 } 2812 2813 /* The mei filtered scan must find the AP, otherwise CSME will 2814 * take the NIC ownership. Add several iterations on the channel to 2815 * make the scan more robust. 2816 */ 2817 scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); 2818 params->n_channels = scan_iters; 2819 for (i = 0; i < scan_iters; i++) 2820 params->channels[i] = chan; 2821 2822 IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); 2823 2824 params->n_ssids = 1; 2825 params->ssids[0].ssid_len = conn_info->ssid_len; 2826 memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); 2827 } 2828 2829 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2830 struct ieee80211_vif *vif, 2831 struct iwl_host_cmd *hcmd, 2832 struct iwl_mvm_scan_params *params, 2833 int type) 2834 { 2835 int uid, i, err; 2836 u8 scan_ver; 2837 2838 lockdep_assert_held(&mvm->mutex); 2839 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); 2840 2841 iwl_mvm_mei_limited_scan(mvm, params); 2842 2843 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2844 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2845 2846 return iwl_mvm_scan_lmac(mvm, vif, params); 2847 } 2848 2849 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2850 if (uid < 0) 2851 return uid; 2852 2853 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2854 2855 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2856 IWL_FW_CMD_VER_UNKNOWN); 2857 2858 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2859 const struct iwl_scan_umac_handler *ver_handler = 2860 &iwl_scan_umac_handlers[i]; 2861 2862 if (ver_handler->version != scan_ver) 2863 continue; 2864 2865 err = ver_handler->handler(mvm, vif, params, type, uid); 2866 return err ? : uid; 2867 } 2868 2869 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2870 if (err) 2871 return err; 2872 2873 return uid; 2874 } 2875 2876 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2877 struct ieee80211_vif *current_vif; 2878 bool p2p_go; 2879 enum nl80211_band band; 2880 }; 2881 2882 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2883 struct ieee80211_vif *vif) 2884 { 2885 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2886 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2887 2888 /* exclude the given vif */ 2889 if (vif == data->current_vif) 2890 return; 2891 2892 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) { 2893 u32 link_id; 2894 2895 for (link_id = 0; 2896 link_id < ARRAY_SIZE(mvmvif->link); 2897 link_id++) { 2898 struct iwl_mvm_vif_link_info *link = 2899 mvmvif->link[link_id]; 2900 2901 if (link && link->phy_ctxt->id < NUM_PHY_CTX && 2902 (data->band == NUM_NL80211_BANDS || 2903 link->phy_ctxt->channel->band == data->band)) { 2904 data->p2p_go = true; 2905 break; 2906 } 2907 } 2908 } 2909 } 2910 2911 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2912 struct ieee80211_vif *vif, 2913 bool low_latency, 2914 enum nl80211_band band) 2915 { 2916 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2917 .current_vif = vif, 2918 .p2p_go = false, 2919 .band = band, 2920 }; 2921 2922 if (!low_latency) 2923 return false; 2924 2925 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2926 IEEE80211_IFACE_ITER_NORMAL, 2927 iwl_mvm_scan_respect_p2p_go_iter, 2928 &data); 2929 2930 return data.p2p_go; 2931 } 2932 2933 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2934 struct ieee80211_vif *vif, 2935 enum nl80211_band band) 2936 { 2937 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2938 2939 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2940 } 2941 2942 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2943 struct ieee80211_vif *vif) 2944 { 2945 bool low_latency = iwl_mvm_low_latency(mvm); 2946 2947 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2948 NUM_NL80211_BANDS); 2949 } 2950 2951 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2952 struct iwl_mvm_scan_params *params, 2953 struct ieee80211_vif *vif) 2954 { 2955 if (iwl_mvm_is_cdb_supported(mvm)) { 2956 params->respect_p2p_go = 2957 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2958 NL80211_BAND_2GHZ); 2959 params->respect_p2p_go_hb = 2960 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2961 NL80211_BAND_5GHZ); 2962 } else { 2963 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2964 } 2965 } 2966 2967 static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm, 2968 struct ieee80211_vif *vif, 2969 struct cfg80211_scan_request *req, 2970 struct ieee80211_scan_ies *ies, 2971 int type) 2972 { 2973 struct iwl_host_cmd hcmd = { 2974 .len = { iwl_mvm_scan_size(mvm), }, 2975 .data = { mvm->scan_cmd, }, 2976 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2977 }; 2978 struct iwl_mvm_scan_params params = {}; 2979 int ret, uid; 2980 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2981 2982 lockdep_assert_held(&mvm->mutex); 2983 2984 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2985 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2986 return -EBUSY; 2987 } 2988 2989 ret = iwl_mvm_check_running_scans(mvm, type); 2990 if (ret) 2991 return ret; 2992 2993 /* we should have failed registration if scan_cmd was NULL */ 2994 if (WARN_ON(!mvm->scan_cmd)) 2995 return -ENOMEM; 2996 2997 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2998 return -ENOBUFS; 2999 3000 params.n_ssids = req->n_ssids; 3001 params.flags = req->flags; 3002 params.n_channels = req->n_channels; 3003 params.delay = 0; 3004 params.ssids = req->ssids; 3005 params.channels = req->channels; 3006 params.mac_addr = req->mac_addr; 3007 params.mac_addr_mask = req->mac_addr_mask; 3008 params.no_cck = req->no_cck; 3009 params.pass_all = true; 3010 params.n_match_sets = 0; 3011 params.match_sets = NULL; 3012 ether_addr_copy(params.bssid, req->bssid); 3013 3014 params.scan_plans = &scan_plan; 3015 params.n_scan_plans = 1; 3016 3017 params.n_6ghz_params = req->n_6ghz_params; 3018 params.scan_6ghz_params = req->scan_6ghz_params; 3019 params.scan_6ghz = req->scan_6ghz; 3020 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3021 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3022 3023 if (req->duration) 3024 params.iter_notif = true; 3025 3026 params.tsf_report_link_id = req->tsf_report_link_id; 3027 if (params.tsf_report_link_id < 0) { 3028 if (vif->active_links) 3029 params.tsf_report_link_id = __ffs(vif->active_links); 3030 else 3031 params.tsf_report_link_id = 0; 3032 } 3033 3034 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3035 3036 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 3037 3038 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3039 3040 if (uid < 0) 3041 return uid; 3042 3043 iwl_mvm_pause_tcm(mvm, false); 3044 3045 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3046 if (ret) { 3047 /* If the scan failed, it usually means that the FW was unable 3048 * to allocate the time events. Warn on it, but maybe we 3049 * should try to send the command again with different params. 3050 */ 3051 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 3052 iwl_mvm_resume_tcm(mvm); 3053 return ret; 3054 } 3055 3056 IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n", 3057 type, uid); 3058 3059 mvm->scan_uid_status[uid] = type; 3060 mvm->scan_status |= type; 3061 3062 if (type == IWL_MVM_SCAN_REGULAR) { 3063 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 3064 schedule_delayed_work(&mvm->scan_timeout_dwork, 3065 msecs_to_jiffies(SCAN_TIMEOUT)); 3066 } 3067 3068 if (params.enable_6ghz_passive) 3069 mvm->last_6ghz_passive_scan_jiffies = jiffies; 3070 3071 return 0; 3072 } 3073 3074 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3075 struct cfg80211_scan_request *req, 3076 struct ieee80211_scan_ies *ies) 3077 { 3078 return _iwl_mvm_single_scan_start(mvm, vif, req, ies, 3079 IWL_MVM_SCAN_REGULAR); 3080 } 3081 3082 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 3083 struct ieee80211_vif *vif, 3084 struct cfg80211_sched_scan_request *req, 3085 struct ieee80211_scan_ies *ies, 3086 int type) 3087 { 3088 struct iwl_host_cmd hcmd = { 3089 .len = { iwl_mvm_scan_size(mvm), }, 3090 .data = { mvm->scan_cmd, }, 3091 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 3092 }; 3093 struct iwl_mvm_scan_params params = {}; 3094 int ret, uid; 3095 int i, j; 3096 bool non_psc_included = false; 3097 3098 lockdep_assert_held(&mvm->mutex); 3099 3100 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 3101 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 3102 return -EBUSY; 3103 } 3104 3105 ret = iwl_mvm_check_running_scans(mvm, type); 3106 if (ret) 3107 return ret; 3108 3109 /* we should have failed registration if scan_cmd was NULL */ 3110 if (WARN_ON(!mvm->scan_cmd)) 3111 return -ENOMEM; 3112 3113 3114 params.n_ssids = req->n_ssids; 3115 params.flags = req->flags; 3116 params.n_channels = req->n_channels; 3117 params.ssids = req->ssids; 3118 params.channels = req->channels; 3119 params.mac_addr = req->mac_addr; 3120 params.mac_addr_mask = req->mac_addr_mask; 3121 params.no_cck = false; 3122 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 3123 params.n_match_sets = req->n_match_sets; 3124 params.match_sets = req->match_sets; 3125 eth_broadcast_addr(params.bssid); 3126 if (!req->n_scan_plans) 3127 return -EINVAL; 3128 3129 params.n_scan_plans = req->n_scan_plans; 3130 params.scan_plans = req->scan_plans; 3131 3132 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3133 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3134 3135 /* In theory, LMAC scans can handle a 32-bit delay, but since 3136 * waiting for over 18 hours to start the scan is a bit silly 3137 * and to keep it aligned with UMAC scans (which only support 3138 * 16-bit delays), trim it down to 16-bits. 3139 */ 3140 if (req->delay > U16_MAX) { 3141 IWL_DEBUG_SCAN(mvm, 3142 "delay value is > 16-bits, set to max possible\n"); 3143 params.delay = U16_MAX; 3144 } else { 3145 params.delay = req->delay; 3146 } 3147 3148 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 3149 if (ret) 3150 return ret; 3151 3152 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3153 3154 /* for 6 GHZ band only PSC channels need to be added */ 3155 for (i = 0; i < params.n_channels; i++) { 3156 struct ieee80211_channel *channel = params.channels[i]; 3157 3158 if (channel->band == NL80211_BAND_6GHZ && 3159 !cfg80211_channel_is_psc(channel)) { 3160 non_psc_included = true; 3161 break; 3162 } 3163 } 3164 3165 if (non_psc_included) { 3166 params.channels = kmemdup(params.channels, 3167 sizeof(params.channels[0]) * 3168 params.n_channels, 3169 GFP_KERNEL); 3170 if (!params.channels) 3171 return -ENOMEM; 3172 3173 for (i = j = 0; i < params.n_channels; i++) { 3174 if (params.channels[i]->band == NL80211_BAND_6GHZ && 3175 !cfg80211_channel_is_psc(params.channels[i])) 3176 continue; 3177 params.channels[j++] = params.channels[i]; 3178 } 3179 params.n_channels = j; 3180 } 3181 3182 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 3183 ret = -ENOBUFS; 3184 goto out; 3185 } 3186 3187 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3188 if (uid < 0) { 3189 ret = uid; 3190 goto out; 3191 } 3192 3193 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3194 if (!ret) { 3195 IWL_DEBUG_SCAN(mvm, 3196 "Sched scan request send success: type=%u, uid=%u\n", 3197 type, uid); 3198 mvm->scan_uid_status[uid] = type; 3199 mvm->scan_status |= type; 3200 } else { 3201 /* If the scan failed, it usually means that the FW was unable 3202 * to allocate the time events. Warn on it, but maybe we 3203 * should try to send the command again with different params. 3204 */ 3205 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 3206 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3207 } 3208 3209 out: 3210 if (non_psc_included) 3211 kfree(params.channels); 3212 return ret; 3213 } 3214 3215 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 3216 struct iwl_rx_cmd_buffer *rxb) 3217 { 3218 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3219 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 3220 u32 uid = __le32_to_cpu(notif->uid); 3221 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 3222 bool select_links = false; 3223 3224 mvm->mei_scan_filter.is_mei_limited_scan = false; 3225 3226 IWL_DEBUG_SCAN(mvm, 3227 "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n", 3228 uid, mvm->scan_uid_status[uid], 3229 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3230 "completed" : "aborted", 3231 iwl_mvm_ebs_status_str(notif->ebs_status)); 3232 3233 IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n", 3234 mvm->scan_status); 3235 3236 IWL_DEBUG_SCAN(mvm, 3237 "Scan completed: line=%u, iter=%u, elapsed time=%u\n", 3238 notif->last_schedule, notif->last_iter, 3239 __le32_to_cpu(notif->time_from_last_iter)); 3240 3241 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 3242 return; 3243 3244 /* if the scan is already stopping, we don't need to notify mac80211 */ 3245 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 3246 struct cfg80211_scan_info info = { 3247 .aborted = aborted, 3248 .scan_start_tsf = mvm->scan_start, 3249 }; 3250 struct iwl_mvm_vif *scan_vif = mvm->scan_vif; 3251 struct iwl_mvm_vif_link_info *link_info = 3252 scan_vif->link[mvm->scan_link_id]; 3253 3254 /* It is possible that by the time the scan is complete the link 3255 * was already removed and is not valid. 3256 */ 3257 if (link_info) 3258 memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN); 3259 else 3260 IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n"); 3261 3262 ieee80211_scan_completed(mvm->hw, &info); 3263 mvm->scan_vif = NULL; 3264 cancel_delayed_work(&mvm->scan_timeout_dwork); 3265 iwl_mvm_resume_tcm(mvm); 3266 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 3267 ieee80211_sched_scan_stopped(mvm->hw); 3268 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3269 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) { 3270 IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n"); 3271 /* 3272 * Other scan types won't necessarily scan for the MLD links channels. 3273 * Therefore, only select links after successful internal scan. 3274 */ 3275 select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED; 3276 } 3277 3278 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 3279 3280 IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n", 3281 mvm->scan_status); 3282 3283 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3284 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3285 mvm->last_ebs_successful = false; 3286 3287 mvm->scan_uid_status[uid] = 0; 3288 3289 if (select_links) 3290 wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk); 3291 } 3292 3293 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3294 struct iwl_rx_cmd_buffer *rxb) 3295 { 3296 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3297 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3298 3299 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3300 3301 IWL_DEBUG_SCAN(mvm, 3302 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3303 notif->status, notif->scanned_channels); 3304 3305 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3306 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3307 ieee80211_sched_scan_results(mvm->hw); 3308 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3309 } 3310 3311 IWL_DEBUG_SCAN(mvm, 3312 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3313 mvm->scan_start); 3314 } 3315 3316 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type, bool *wait) 3317 { 3318 struct iwl_umac_scan_abort abort_cmd = {}; 3319 struct iwl_host_cmd cmd = { 3320 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3321 .len = { sizeof(abort_cmd), }, 3322 .data = { &abort_cmd, }, 3323 .flags = CMD_SEND_IN_RFKILL, 3324 }; 3325 3326 int uid, ret; 3327 u32 status = IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND; 3328 3329 lockdep_assert_held(&mvm->mutex); 3330 3331 *wait = true; 3332 3333 /* We should always get a valid index here, because we already 3334 * checked that this type of scan was running in the generic 3335 * code. 3336 */ 3337 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3338 if (WARN_ON_ONCE(uid < 0)) 3339 return uid; 3340 3341 abort_cmd.uid = cpu_to_le32(uid); 3342 3343 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3344 3345 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 3346 3347 IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status); 3348 if (!ret) 3349 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3350 3351 /* Handle the case that the FW is no longer familiar with the scan that 3352 * is to be stopped. In such a case, it is expected that the scan 3353 * complete notification was already received but not yet processed. 3354 * In such a case, there is no need to wait for a scan complete 3355 * notification and the flow should continue similar to the case that 3356 * the scan was really aborted. 3357 */ 3358 if (status == IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND) { 3359 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3360 *wait = false; 3361 } 3362 3363 return ret; 3364 } 3365 3366 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3367 { 3368 struct iwl_notification_wait wait_scan_done; 3369 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3370 SCAN_OFFLOAD_COMPLETE, }; 3371 int ret; 3372 bool wait = true; 3373 3374 lockdep_assert_held(&mvm->mutex); 3375 3376 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3377 scan_done_notif, 3378 ARRAY_SIZE(scan_done_notif), 3379 NULL, NULL); 3380 3381 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3382 3383 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3384 ret = iwl_mvm_umac_scan_abort(mvm, type, &wait); 3385 else 3386 ret = iwl_mvm_lmac_scan_abort(mvm); 3387 3388 if (ret) { 3389 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3390 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3391 return ret; 3392 } else if (!wait) { 3393 IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type); 3394 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3395 return 0; 3396 } 3397 3398 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3399 1 * HZ); 3400 } 3401 3402 static size_t iwl_scan_req_umac_get_size(u8 scan_ver) 3403 { 3404 switch (scan_ver) { 3405 case 12: 3406 return sizeof(struct iwl_scan_req_umac_v12); 3407 case 14: 3408 case 15: 3409 case 16: 3410 case 17: 3411 return sizeof(struct iwl_scan_req_umac_v17); 3412 } 3413 3414 return 0; 3415 } 3416 3417 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) 3418 { 3419 int base_size, tail_size; 3420 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3421 IWL_FW_CMD_VER_UNKNOWN); 3422 3423 base_size = iwl_scan_req_umac_get_size(scan_ver); 3424 if (base_size) 3425 return base_size; 3426 3427 3428 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3429 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3430 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3431 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3432 else if (iwl_mvm_cdb_scan_api(mvm)) 3433 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3434 else 3435 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3436 3437 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3438 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3439 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3440 else 3441 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3442 3443 return base_size + 3444 sizeof(struct iwl_scan_channel_cfg_umac) * 3445 mvm->fw->ucode_capa.n_scan_channels + 3446 tail_size; 3447 } 3448 return sizeof(struct iwl_scan_req_lmac) + 3449 sizeof(struct iwl_scan_channel_cfg_lmac) * 3450 mvm->fw->ucode_capa.n_scan_channels + 3451 sizeof(struct iwl_scan_probe_req_v1); 3452 } 3453 3454 /* 3455 * This function is used in nic restart flow, to inform mac80211 about scans 3456 * that was aborted by restart flow or by an assert. 3457 */ 3458 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3459 { 3460 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3461 int uid, i; 3462 3463 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3464 if (uid >= 0) { 3465 struct cfg80211_scan_info info = { 3466 .aborted = true, 3467 }; 3468 3469 cancel_delayed_work(&mvm->scan_timeout_dwork); 3470 3471 ieee80211_scan_completed(mvm->hw, &info); 3472 mvm->scan_uid_status[uid] = 0; 3473 } 3474 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3475 if (uid >= 0) { 3476 /* Sched scan will be restarted by mac80211 in 3477 * restart_hw, so do not report if FW is about to be 3478 * restarted. 3479 */ 3480 if (!mvm->fw_restart) 3481 ieee80211_sched_scan_stopped(mvm->hw); 3482 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3483 mvm->scan_uid_status[uid] = 0; 3484 } 3485 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO); 3486 if (uid >= 0) { 3487 IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n"); 3488 mvm->scan_uid_status[uid] = 0; 3489 } 3490 3491 uid = iwl_mvm_scan_uid_by_status(mvm, 3492 IWL_MVM_SCAN_STOPPING_REGULAR); 3493 if (uid >= 0) 3494 mvm->scan_uid_status[uid] = 0; 3495 3496 uid = iwl_mvm_scan_uid_by_status(mvm, 3497 IWL_MVM_SCAN_STOPPING_SCHED); 3498 if (uid >= 0) 3499 mvm->scan_uid_status[uid] = 0; 3500 3501 uid = iwl_mvm_scan_uid_by_status(mvm, 3502 IWL_MVM_SCAN_STOPPING_INT_MLO); 3503 if (uid >= 0) 3504 mvm->scan_uid_status[uid] = 0; 3505 3506 /* We shouldn't have any UIDs still set. Loop over all the 3507 * UIDs to make sure there's nothing left there and warn if 3508 * any is found. 3509 */ 3510 for (i = 0; i < mvm->max_scans; i++) { 3511 if (WARN_ONCE(mvm->scan_uid_status[i], 3512 "UMAC scan UID %d status was not cleaned\n", 3513 i)) 3514 mvm->scan_uid_status[i] = 0; 3515 } 3516 } else { 3517 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3518 struct cfg80211_scan_info info = { 3519 .aborted = true, 3520 }; 3521 3522 cancel_delayed_work(&mvm->scan_timeout_dwork); 3523 ieee80211_scan_completed(mvm->hw, &info); 3524 } 3525 3526 /* Sched scan will be restarted by mac80211 in 3527 * restart_hw, so do not report if FW is about to be 3528 * restarted. 3529 */ 3530 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3531 !mvm->fw_restart) { 3532 ieee80211_sched_scan_stopped(mvm->hw); 3533 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3534 } 3535 } 3536 } 3537 3538 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3539 { 3540 int ret; 3541 3542 IWL_DEBUG_SCAN(mvm, 3543 "Request to stop scan: type=0x%x, status=0x%x\n", 3544 type, mvm->scan_status); 3545 3546 if (!(mvm->scan_status & type)) 3547 return 0; 3548 3549 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 3550 ret = 0; 3551 goto out; 3552 } 3553 3554 ret = iwl_mvm_scan_stop_wait(mvm, type); 3555 if (!ret) 3556 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3557 else 3558 IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n"); 3559 3560 out: 3561 /* Clear the scan status so the next scan requests will 3562 * succeed and mark the scan as stopping, so that the Rx 3563 * handler doesn't do anything, as the scan was stopped from 3564 * above. 3565 */ 3566 mvm->scan_status &= ~type; 3567 3568 if (type == IWL_MVM_SCAN_REGULAR) { 3569 cancel_delayed_work(&mvm->scan_timeout_dwork); 3570 if (notify) { 3571 struct cfg80211_scan_info info = { 3572 .aborted = true, 3573 }; 3574 3575 ieee80211_scan_completed(mvm->hw, &info); 3576 } 3577 } else if (notify) { 3578 ieee80211_sched_scan_stopped(mvm->hw); 3579 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3580 } 3581 3582 return ret; 3583 } 3584 3585 static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm, 3586 struct ieee80211_vif *vif, 3587 struct ieee80211_channel **channels, 3588 size_t n_channels) 3589 { 3590 struct cfg80211_scan_request *req = NULL; 3591 struct ieee80211_scan_ies ies = {}; 3592 size_t size, i; 3593 int ret; 3594 3595 lockdep_assert_held(&mvm->mutex); 3596 3597 IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n", 3598 n_channels); 3599 3600 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 3601 return -EINVAL; 3602 3603 size = struct_size(req, channels, n_channels); 3604 req = kzalloc(size, GFP_KERNEL); 3605 if (!req) 3606 return -ENOMEM; 3607 3608 /* set the requested channels */ 3609 for (i = 0; i < n_channels; i++) 3610 req->channels[i] = channels[i]; 3611 3612 req->n_channels = n_channels; 3613 3614 /* set the rates */ 3615 for (i = 0; i < NUM_NL80211_BANDS; i++) 3616 if (mvm->hw->wiphy->bands[i]) 3617 req->rates[i] = 3618 (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1; 3619 3620 req->wdev = ieee80211_vif_to_wdev(vif); 3621 req->wiphy = mvm->hw->wiphy; 3622 req->scan_start = jiffies; 3623 req->tsf_report_link_id = -1; 3624 3625 ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies, 3626 IWL_MVM_SCAN_INT_MLO); 3627 kfree(req); 3628 3629 IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret); 3630 return ret; 3631 } 3632 3633 int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3634 { 3635 struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS]; 3636 unsigned long usable_links = ieee80211_vif_usable_links(vif); 3637 size_t n_channels = 0; 3638 u8 link_id; 3639 3640 lockdep_assert_held(&mvm->mutex); 3641 3642 if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) { 3643 IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n"); 3644 return -EBUSY; 3645 } 3646 3647 rcu_read_lock(); 3648 3649 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 3650 struct ieee80211_bss_conf *link_conf = 3651 rcu_dereference(vif->link_conf[link_id]); 3652 3653 if (WARN_ON_ONCE(!link_conf)) 3654 continue; 3655 3656 channels[n_channels++] = link_conf->chanreq.oper.chan; 3657 } 3658 3659 rcu_read_unlock(); 3660 3661 if (!n_channels) 3662 return -EINVAL; 3663 3664 return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels); 3665 } 3666 3667 static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm, 3668 enum nl80211_band band, 3669 u16 phy_chan_num) 3670 { 3671 struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band]; 3672 int chan_idx; 3673 3674 if (WARN_ON_ONCE(!sband)) 3675 return -EINVAL; 3676 3677 for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) { 3678 struct ieee80211_channel *channel = &sband->channels[chan_idx]; 3679 3680 if (channel->hw_value == phy_chan_num) 3681 return chan_idx; 3682 } 3683 3684 return -EINVAL; 3685 } 3686 3687 static u32 iwl_mvm_div_by_db(u32 value, u8 db) 3688 { 3689 /* 3690 * 2^32 * 10**(i / 10) for i = [1, 10], skipping 0 and simply stopping 3691 * at 10 dB and looping instead of using a much larger table. 3692 * 3693 * Using 64 bit math is overkill, but means the helper does not require 3694 * a limit on the input range. 3695 */ 3696 static const u32 db_to_val[] = { 3697 0xcb59185e, 0xa1866ba8, 0x804dce7a, 0x65ea59fe, 0x50f44d89, 3698 0x404de61f, 0x331426af, 0x2892c18b, 0x203a7e5b, 0x1999999a, 3699 }; 3700 3701 while (value && db > 0) { 3702 u8 change = min_t(u8, db, ARRAY_SIZE(db_to_val)); 3703 3704 value = (((u64)value) * db_to_val[change - 1]) >> 32; 3705 3706 db -= change; 3707 } 3708 3709 return value; 3710 } 3711 3712 VISIBLE_IF_IWLWIFI_KUNIT s8 3713 iwl_mvm_average_dbm_values(const struct iwl_umac_scan_channel_survey_notif *notif) 3714 { 3715 s8 average_magnitude; 3716 u32 average_factor; 3717 s8 sum_magnitude = -128; 3718 u32 sum_factor = 0; 3719 int i, count = 0; 3720 3721 /* 3722 * To properly average the decibel values (signal values given in dBm) 3723 * we need to do the math in linear space. Doing a linear average of 3724 * dB (dBm) values is a bit annoying though due to the large range of 3725 * at least -10 to -110 dBm that will not fit into a 32 bit integer. 3726 * 3727 * A 64 bit integer should be sufficient, but then we still have the 3728 * problem that there are no directly usable utility functions 3729 * available. 3730 * 3731 * So, lets not deal with that and instead do much of the calculation 3732 * with a 16.16 fixed point integer along with a base in dBm. 16.16 bit 3733 * gives us plenty of head-room for adding up a few values and even 3734 * doing some math on it. And the tail should be accurate enough too 3735 * (1/2^16 is somewhere around -48 dB, so effectively zero). 3736 * 3737 * i.e. the real value of sum is: 3738 * sum = sum_factor / 2^16 * 10^(sum_magnitude / 10) mW 3739 * 3740 * However, that does mean we need to be able to bring two values to 3741 * a common base, so we need a helper for that. 3742 * 3743 * Note that this function takes an input with unsigned negative dBm 3744 * values but returns a signed dBm (i.e. a negative value). 3745 */ 3746 3747 for (i = 0; i < ARRAY_SIZE(notif->noise); i++) { 3748 s8 val_magnitude; 3749 u32 val_factor; 3750 3751 if (notif->noise[i] == 0xff) 3752 continue; 3753 3754 val_factor = 0x10000; 3755 val_magnitude = -notif->noise[i]; 3756 3757 if (val_magnitude <= sum_magnitude) { 3758 u8 div_db = sum_magnitude - val_magnitude; 3759 3760 val_factor = iwl_mvm_div_by_db(val_factor, div_db); 3761 val_magnitude = sum_magnitude; 3762 } else { 3763 u8 div_db = val_magnitude - sum_magnitude; 3764 3765 sum_factor = iwl_mvm_div_by_db(sum_factor, div_db); 3766 sum_magnitude = val_magnitude; 3767 } 3768 3769 sum_factor += val_factor; 3770 count++; 3771 } 3772 3773 /* No valid noise measurement, return a very high noise level */ 3774 if (count == 0) 3775 return 0; 3776 3777 average_magnitude = sum_magnitude; 3778 average_factor = sum_factor / count; 3779 3780 /* 3781 * average_factor will be a number smaller than 1.0 (0x10000) at this 3782 * point. What we need to do now is to adjust average_magnitude so that 3783 * average_factor is between -0.5 dB and 0.5 dB. 3784 * 3785 * Just do -1 dB steps and find the point where 3786 * -0.5 dB * -i dB = 0x10000 * 10^(-0.5/10) / i dB 3787 * = div_by_db(0xe429, i) 3788 * is smaller than average_factor. 3789 */ 3790 for (i = 0; average_factor < iwl_mvm_div_by_db(0xe429, i); i++) { 3791 /* nothing */ 3792 } 3793 3794 return average_magnitude - i; 3795 } 3796 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_average_dbm_values); 3797 3798 void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm, 3799 struct iwl_rx_cmd_buffer *rxb) 3800 { 3801 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3802 const struct iwl_umac_scan_channel_survey_notif *notif = 3803 (void *)pkt->data; 3804 struct iwl_mvm_acs_survey_channel *info; 3805 enum nl80211_band band; 3806 int chan_idx; 3807 3808 lockdep_assert_held(&mvm->mutex); 3809 3810 if (!mvm->acs_survey) { 3811 size_t n_channels = 0; 3812 3813 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3814 if (!mvm->hw->wiphy->bands[band]) 3815 continue; 3816 3817 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3818 } 3819 3820 mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey, 3821 channels, n_channels), 3822 GFP_KERNEL); 3823 3824 if (!mvm->acs_survey) 3825 return; 3826 3827 mvm->acs_survey->n_channels = n_channels; 3828 n_channels = 0; 3829 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3830 if (!mvm->hw->wiphy->bands[band]) 3831 continue; 3832 3833 mvm->acs_survey->bands[band] = 3834 &mvm->acs_survey->channels[n_channels]; 3835 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3836 } 3837 } 3838 3839 band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band)); 3840 chan_idx = iwl_mvm_chanidx_from_phy(mvm, band, 3841 le32_to_cpu(notif->channel)); 3842 if (WARN_ON_ONCE(chan_idx < 0)) 3843 return; 3844 3845 IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n", 3846 mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq); 3847 3848 info = &mvm->acs_survey->bands[band][chan_idx]; 3849 3850 /* Times are all in ms */ 3851 info->time = le32_to_cpu(notif->active_time); 3852 info->time_busy = le32_to_cpu(notif->busy_time); 3853 info->time_rx = le32_to_cpu(notif->rx_time); 3854 info->time_tx = le32_to_cpu(notif->tx_time); 3855 info->noise = iwl_mvm_average_dbm_values(notif); 3856 } 3857