1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2021 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 struct iwl_mvm_scan_timing_params { 49 u32 suspend_time; 50 u32 max_out_time; 51 }; 52 53 static struct iwl_mvm_scan_timing_params scan_timing[] = { 54 [IWL_SCAN_TYPE_UNASSOC] = { 55 .suspend_time = 0, 56 .max_out_time = 0, 57 }, 58 [IWL_SCAN_TYPE_WILD] = { 59 .suspend_time = 30, 60 .max_out_time = 120, 61 }, 62 [IWL_SCAN_TYPE_MILD] = { 63 .suspend_time = 120, 64 .max_out_time = 120, 65 }, 66 [IWL_SCAN_TYPE_FRAGMENTED] = { 67 .suspend_time = 95, 68 .max_out_time = 44, 69 }, 70 [IWL_SCAN_TYPE_FAST_BALANCE] = { 71 .suspend_time = 30, 72 .max_out_time = 37, 73 }, 74 }; 75 76 struct iwl_mvm_scan_params { 77 /* For CDB this is low band scan type, for non-CDB - type. */ 78 enum iwl_mvm_scan_type type; 79 enum iwl_mvm_scan_type hb_type; 80 u32 n_channels; 81 u16 delay; 82 int n_ssids; 83 struct cfg80211_ssid *ssids; 84 struct ieee80211_channel **channels; 85 u32 flags; 86 u8 *mac_addr; 87 u8 *mac_addr_mask; 88 bool no_cck; 89 bool pass_all; 90 int n_match_sets; 91 struct iwl_scan_probe_req preq; 92 struct cfg80211_match_set *match_sets; 93 int n_scan_plans; 94 struct cfg80211_sched_scan_plan *scan_plans; 95 bool iter_notif; 96 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 97 u32 n_6ghz_params; 98 bool scan_6ghz; 99 bool enable_6ghz_passive; 100 bool respect_p2p_go, respect_p2p_go_hb; 101 }; 102 103 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 104 { 105 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 106 107 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 108 return (void *)&cmd->v8.data; 109 110 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 111 return (void *)&cmd->v7.data; 112 113 if (iwl_mvm_cdb_scan_api(mvm)) 114 return (void *)&cmd->v6.data; 115 116 return (void *)&cmd->v1.data; 117 } 118 119 static inline struct iwl_scan_umac_chan_param * 120 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 121 { 122 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 123 124 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 125 return &cmd->v8.channel; 126 127 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 128 return &cmd->v7.channel; 129 130 if (iwl_mvm_cdb_scan_api(mvm)) 131 return &cmd->v6.channel; 132 133 return &cmd->v1.channel; 134 } 135 136 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 137 { 138 if (mvm->scan_rx_ant != ANT_NONE) 139 return mvm->scan_rx_ant; 140 return iwl_mvm_get_valid_rx_ant(mvm); 141 } 142 143 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 144 { 145 u16 rx_chain; 146 u8 rx_ant; 147 148 rx_ant = iwl_mvm_scan_rx_ant(mvm); 149 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 150 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 151 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 152 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 153 return cpu_to_le16(rx_chain); 154 } 155 156 static inline __le32 157 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 158 bool no_cck) 159 { 160 u32 tx_ant; 161 162 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 163 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 164 165 if (band == NL80211_BAND_2GHZ && !no_cck) 166 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 167 tx_ant); 168 else 169 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 170 } 171 172 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 173 { 174 return mvm->tcm.result.global_load; 175 } 176 177 static enum iwl_mvm_traffic_load 178 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 179 { 180 return mvm->tcm.result.band_load[band]; 181 } 182 183 struct iwl_mvm_scan_iter_data { 184 u32 global_cnt; 185 struct ieee80211_vif *current_vif; 186 bool is_dcm_with_p2p_go; 187 }; 188 189 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 190 struct ieee80211_vif *vif) 191 { 192 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 193 struct iwl_mvm_scan_iter_data *data = _data; 194 struct iwl_mvm_vif *curr_mvmvif; 195 196 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 197 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 198 data->global_cnt += 1; 199 200 if (!data->current_vif || vif == data->current_vif) 201 return; 202 203 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 204 205 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 206 mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 207 mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 208 data->is_dcm_with_p2p_go = true; 209 } 210 211 static enum 212 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 213 struct ieee80211_vif *vif, 214 enum iwl_mvm_traffic_load load, 215 bool low_latency) 216 { 217 struct iwl_mvm_scan_iter_data data = { 218 .current_vif = vif, 219 .is_dcm_with_p2p_go = false, 220 .global_cnt = 0, 221 }; 222 223 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 224 IEEE80211_IFACE_ITER_NORMAL, 225 iwl_mvm_scan_iterator, 226 &data); 227 228 if (!data.global_cnt) 229 return IWL_SCAN_TYPE_UNASSOC; 230 231 if (fw_has_api(&mvm->fw->ucode_capa, 232 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 233 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 234 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 235 return IWL_SCAN_TYPE_FRAGMENTED; 236 237 /* 238 * in case of DCM with GO where BSS DTIM interval < 220msec 239 * set all scan requests as fast-balance scan 240 */ 241 if (vif && vif->type == NL80211_IFTYPE_STATION && 242 vif->bss_conf.dtim_period < 220 && 243 data.is_dcm_with_p2p_go) 244 return IWL_SCAN_TYPE_FAST_BALANCE; 245 } 246 247 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 248 return IWL_SCAN_TYPE_MILD; 249 250 return IWL_SCAN_TYPE_WILD; 251 } 252 253 static enum 254 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 255 struct ieee80211_vif *vif) 256 { 257 enum iwl_mvm_traffic_load load; 258 bool low_latency; 259 260 load = iwl_mvm_get_traffic_load(mvm); 261 low_latency = iwl_mvm_low_latency(mvm); 262 263 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 264 } 265 266 static enum 267 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 268 struct ieee80211_vif *vif, 269 enum nl80211_band band) 270 { 271 enum iwl_mvm_traffic_load load; 272 bool low_latency; 273 274 load = iwl_mvm_get_traffic_load_band(mvm, band); 275 low_latency = iwl_mvm_low_latency_band(mvm, band); 276 277 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 278 } 279 280 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 281 { 282 /* require rrm scan whenever the fw supports it */ 283 return fw_has_capa(&mvm->fw->ucode_capa, 284 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 285 } 286 287 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 288 { 289 int max_probe_len; 290 291 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 292 293 /* we create the 802.11 header and SSID element */ 294 max_probe_len -= 24 + 2; 295 296 /* DS parameter set element is added on 2.4GHZ band if required */ 297 if (iwl_mvm_rrm_scan_needed(mvm)) 298 max_probe_len -= 3; 299 300 return max_probe_len; 301 } 302 303 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 304 { 305 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 306 307 /* TODO: [BUG] This function should return the maximum allowed size of 308 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 309 * in the same command. So the correct implementation of this function 310 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 311 * command has only 512 bytes and it would leave us with about 240 312 * bytes for scan IEs, which is clearly not enough. So meanwhile 313 * we will report an incorrect value. This may result in a failure to 314 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 315 * functions with -ENOBUFS, if a large enough probe will be provided. 316 */ 317 return max_ie_len; 318 } 319 320 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 321 struct iwl_rx_cmd_buffer *rxb) 322 { 323 struct iwl_rx_packet *pkt = rxb_addr(rxb); 324 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 325 326 IWL_DEBUG_SCAN(mvm, 327 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 328 notif->status, notif->scanned_channels); 329 330 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 331 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 332 ieee80211_sched_scan_results(mvm->hw); 333 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 334 } 335 } 336 337 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 338 struct iwl_rx_cmd_buffer *rxb) 339 { 340 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 341 ieee80211_sched_scan_results(mvm->hw); 342 } 343 344 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 345 { 346 switch (status) { 347 case IWL_SCAN_EBS_SUCCESS: 348 return "successful"; 349 case IWL_SCAN_EBS_INACTIVE: 350 return "inactive"; 351 case IWL_SCAN_EBS_FAILED: 352 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 353 default: 354 return "failed"; 355 } 356 } 357 358 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 359 struct iwl_rx_cmd_buffer *rxb) 360 { 361 struct iwl_rx_packet *pkt = rxb_addr(rxb); 362 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 363 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 364 365 /* If this happens, the firmware has mistakenly sent an LMAC 366 * notification during UMAC scans -- warn and ignore it. 367 */ 368 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 369 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 370 return; 371 372 /* scan status must be locked for proper checking */ 373 lockdep_assert_held(&mvm->mutex); 374 375 /* We first check if we were stopping a scan, in which case we 376 * just clear the stopping flag. Then we check if it was a 377 * firmware initiated stop, in which case we need to inform 378 * mac80211. 379 * Note that we can have a stopping and a running scan 380 * simultaneously, but we can't have two different types of 381 * scans stopping or running at the same time (since LMAC 382 * doesn't support it). 383 */ 384 385 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 386 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 387 388 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 389 aborted ? "aborted" : "completed", 390 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 391 IWL_DEBUG_SCAN(mvm, 392 "Last line %d, Last iteration %d, Time after last iteration %d\n", 393 scan_notif->last_schedule_line, 394 scan_notif->last_schedule_iteration, 395 __le32_to_cpu(scan_notif->time_after_last_iter)); 396 397 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 398 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 399 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 400 aborted ? "aborted" : "completed", 401 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 402 403 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 404 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 405 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 406 407 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 408 aborted ? "aborted" : "completed", 409 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 410 IWL_DEBUG_SCAN(mvm, 411 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 412 scan_notif->last_schedule_line, 413 scan_notif->last_schedule_iteration, 414 __le32_to_cpu(scan_notif->time_after_last_iter)); 415 416 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 417 ieee80211_sched_scan_stopped(mvm->hw); 418 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 419 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 420 struct cfg80211_scan_info info = { 421 .aborted = aborted, 422 }; 423 424 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 425 aborted ? "aborted" : "completed", 426 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 427 428 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 429 ieee80211_scan_completed(mvm->hw, &info); 430 cancel_delayed_work(&mvm->scan_timeout_dwork); 431 iwl_mvm_resume_tcm(mvm); 432 } else { 433 IWL_ERR(mvm, 434 "got scan complete notification but no scan is running\n"); 435 } 436 437 mvm->last_ebs_successful = 438 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 439 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 440 } 441 442 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 443 { 444 int i; 445 446 for (i = 0; i < PROBE_OPTION_MAX; i++) { 447 if (!ssid_list[i].len) 448 break; 449 if (ssid_list[i].len == ssid_len && 450 #if defined(__linux__) 451 !memcmp(ssid_list->ssid, ssid, ssid_len)) 452 #elif defined(__FreeBSD__) 453 !memcmp(ssid_list[i].ssid, ssid, ssid_len)) 454 #endif 455 return i; 456 } 457 return -1; 458 } 459 460 /* We insert the SSIDs in an inverted order, because the FW will 461 * invert it back. 462 */ 463 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 464 struct iwl_ssid_ie *ssids, 465 u32 *ssid_bitmap) 466 { 467 int i, j; 468 int index; 469 u32 tmp_bitmap = 0; 470 471 /* 472 * copy SSIDs from match list. 473 * iwl_config_sched_scan_profiles() uses the order of these ssids to 474 * config match list. 475 */ 476 for (i = 0, j = params->n_match_sets - 1; 477 j >= 0 && i < PROBE_OPTION_MAX; 478 i++, j--) { 479 /* skip empty SSID matchsets */ 480 if (!params->match_sets[j].ssid.ssid_len) 481 continue; 482 ssids[i].id = WLAN_EID_SSID; 483 ssids[i].len = params->match_sets[j].ssid.ssid_len; 484 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 485 ssids[i].len); 486 } 487 488 /* add SSIDs from scan SSID list */ 489 for (j = params->n_ssids - 1; 490 j >= 0 && i < PROBE_OPTION_MAX; 491 i++, j--) { 492 index = iwl_ssid_exist(params->ssids[j].ssid, 493 params->ssids[j].ssid_len, 494 ssids); 495 if (index < 0) { 496 ssids[i].id = WLAN_EID_SSID; 497 ssids[i].len = params->ssids[j].ssid_len; 498 memcpy(ssids[i].ssid, params->ssids[j].ssid, 499 ssids[i].len); 500 tmp_bitmap |= BIT(i); 501 } else { 502 tmp_bitmap |= BIT(index); 503 } 504 } 505 if (ssid_bitmap) 506 *ssid_bitmap = tmp_bitmap; 507 } 508 509 static int 510 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 511 struct cfg80211_sched_scan_request *req) 512 { 513 struct iwl_scan_offload_profile *profile; 514 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 515 struct iwl_scan_offload_blocklist *blocklist; 516 struct iwl_scan_offload_profile_cfg_data *data; 517 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 518 int profile_cfg_size = sizeof(*data) + 519 sizeof(*profile) * max_profiles; 520 struct iwl_host_cmd cmd = { 521 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 522 .len[1] = profile_cfg_size, 523 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 524 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 525 }; 526 int blocklist_len; 527 int i; 528 int ret; 529 530 if (WARN_ON(req->n_match_sets > max_profiles)) 531 return -EIO; 532 533 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 534 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 535 else 536 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 537 538 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 539 if (!blocklist) 540 return -ENOMEM; 541 542 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 543 if (!profile_cfg_v1) { 544 ret = -ENOMEM; 545 goto free_blocklist; 546 } 547 548 cmd.data[0] = blocklist; 549 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 550 cmd.data[1] = profile_cfg_v1; 551 552 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 553 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 554 struct iwl_scan_offload_profile_cfg *profile_cfg = 555 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 556 557 data = &profile_cfg->data; 558 } else { 559 data = &profile_cfg_v1->data; 560 } 561 562 /* No blocklist configuration */ 563 data->num_profiles = req->n_match_sets; 564 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 565 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 566 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 567 568 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 569 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 570 571 for (i = 0; i < req->n_match_sets; i++) { 572 profile = &profile_cfg_v1->profiles[i]; 573 profile->ssid_index = i; 574 /* Support any cipher and auth algorithm */ 575 profile->unicast_cipher = 0xff; 576 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 577 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 578 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 579 profile->network_type = IWL_NETWORK_TYPE_ANY; 580 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 581 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 582 } 583 584 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 585 586 ret = iwl_mvm_send_cmd(mvm, &cmd); 587 kfree(profile_cfg_v1); 588 free_blocklist: 589 kfree(blocklist); 590 591 return ret; 592 } 593 594 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 595 struct cfg80211_sched_scan_request *req) 596 { 597 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 598 IWL_DEBUG_SCAN(mvm, 599 "Sending scheduled scan with filtering, n_match_sets %d\n", 600 req->n_match_sets); 601 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 602 return false; 603 } 604 605 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 606 607 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 608 return true; 609 } 610 611 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 612 { 613 int ret; 614 struct iwl_host_cmd cmd = { 615 .id = SCAN_OFFLOAD_ABORT_CMD, 616 }; 617 u32 status = CAN_ABORT_STATUS; 618 619 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 620 if (ret) 621 return ret; 622 623 if (status != CAN_ABORT_STATUS) { 624 /* 625 * The scan abort will return 1 for success or 626 * 2 for "failure". A failure condition can be 627 * due to simply not being in an active scan which 628 * can occur if we send the scan abort before the 629 * microcode has notified us that a scan is completed. 630 */ 631 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 632 ret = -ENOENT; 633 } 634 635 return ret; 636 } 637 638 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 639 struct iwl_scan_req_tx_cmd *tx_cmd, 640 bool no_cck) 641 { 642 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 643 TX_CMD_FLG_BT_DIS); 644 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 645 NL80211_BAND_2GHZ, 646 no_cck); 647 648 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 649 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 650 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 651 652 /* 653 * Fw doesn't use this sta anymore, pending deprecation via HOST API 654 * change 655 */ 656 } else { 657 tx_cmd[0].sta_id = 0xff; 658 tx_cmd[1].sta_id = 0xff; 659 } 660 661 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 662 TX_CMD_FLG_BT_DIS); 663 664 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 665 NL80211_BAND_5GHZ, 666 no_cck); 667 } 668 669 static void 670 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 671 struct ieee80211_channel **channels, 672 int n_channels, u32 ssid_bitmap, 673 struct iwl_scan_req_lmac *cmd) 674 { 675 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 676 int i; 677 678 for (i = 0; i < n_channels; i++) { 679 channel_cfg[i].channel_num = 680 cpu_to_le16(channels[i]->hw_value); 681 channel_cfg[i].iter_count = cpu_to_le16(1); 682 channel_cfg[i].iter_interval = 0; 683 channel_cfg[i].flags = 684 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 685 ssid_bitmap); 686 } 687 } 688 689 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 690 size_t len, u8 *const pos) 691 { 692 static const u8 before_ds_params[] = { 693 WLAN_EID_SSID, 694 WLAN_EID_SUPP_RATES, 695 WLAN_EID_REQUEST, 696 WLAN_EID_EXT_SUPP_RATES, 697 }; 698 size_t offs; 699 u8 *newpos = pos; 700 701 if (!iwl_mvm_rrm_scan_needed(mvm)) { 702 memcpy(newpos, ies, len); 703 return newpos + len; 704 } 705 706 offs = ieee80211_ie_split(ies, len, 707 before_ds_params, 708 ARRAY_SIZE(before_ds_params), 709 0); 710 711 memcpy(newpos, ies, offs); 712 newpos += offs; 713 714 /* Add a placeholder for DS Parameter Set element */ 715 *newpos++ = WLAN_EID_DS_PARAMS; 716 *newpos++ = 1; 717 *newpos++ = 0; 718 719 memcpy(newpos, ies + offs, len - offs); 720 newpos += len - offs; 721 722 return newpos; 723 } 724 725 #define WFA_TPC_IE_LEN 9 726 727 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 728 { 729 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 730 pos[1] = WFA_TPC_IE_LEN - 2; 731 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 732 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 733 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 734 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 735 pos[6] = 0; 736 /* pos[7] - tx power will be inserted by the FW */ 737 pos[7] = 0; 738 pos[8] = 0; 739 } 740 741 static void 742 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 743 struct ieee80211_scan_ies *ies, 744 struct iwl_mvm_scan_params *params) 745 { 746 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 747 u8 *pos, *newpos; 748 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 749 params->mac_addr : NULL; 750 751 /* 752 * Unfortunately, right now the offload scan doesn't support randomising 753 * within the firmware, so until the firmware API is ready we implement 754 * it in the driver. This means that the scan iterations won't really be 755 * random, only when it's restarted, but at least that helps a bit. 756 */ 757 if (mac_addr) 758 get_random_mask_addr(frame->sa, mac_addr, 759 params->mac_addr_mask); 760 else 761 memcpy(frame->sa, vif->addr, ETH_ALEN); 762 763 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 764 eth_broadcast_addr(frame->da); 765 eth_broadcast_addr(frame->bssid); 766 frame->seq_ctrl = 0; 767 768 pos = frame->u.probe_req.variable; 769 *pos++ = WLAN_EID_SSID; 770 *pos++ = 0; 771 772 params->preq.mac_header.offset = 0; 773 params->preq.mac_header.len = cpu_to_le16(24 + 2); 774 775 /* Insert ds parameter set element on 2.4 GHz band */ 776 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 777 ies->ies[NL80211_BAND_2GHZ], 778 ies->len[NL80211_BAND_2GHZ], 779 pos); 780 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 781 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 782 pos = newpos; 783 784 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 785 ies->len[NL80211_BAND_5GHZ]); 786 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 787 params->preq.band_data[1].len = 788 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 789 pos += ies->len[NL80211_BAND_5GHZ]; 790 791 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 792 ies->len[NL80211_BAND_6GHZ]); 793 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 794 params->preq.band_data[2].len = 795 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 796 pos += ies->len[NL80211_BAND_6GHZ]; 797 memcpy(pos, ies->common_ies, ies->common_ie_len); 798 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 799 800 if (iwl_mvm_rrm_scan_needed(mvm) && 801 !fw_has_capa(&mvm->fw->ucode_capa, 802 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 803 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 804 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 805 WFA_TPC_IE_LEN); 806 } else { 807 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 808 } 809 } 810 811 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 812 struct iwl_scan_req_lmac *cmd, 813 struct iwl_mvm_scan_params *params) 814 { 815 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 816 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 817 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 818 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 819 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 820 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 821 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 822 } 823 824 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 825 struct ieee80211_scan_ies *ies, 826 int n_channels) 827 { 828 return ((n_ssids <= PROBE_OPTION_MAX) && 829 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 830 (ies->common_ie_len + 831 ies->len[NL80211_BAND_2GHZ] + 832 ies->len[NL80211_BAND_5GHZ] <= 833 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 834 } 835 836 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 837 struct ieee80211_vif *vif) 838 { 839 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 840 bool low_latency; 841 842 if (iwl_mvm_is_cdb_supported(mvm)) 843 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 844 else 845 low_latency = iwl_mvm_low_latency(mvm); 846 847 /* We can only use EBS if: 848 * 1. the feature is supported; 849 * 2. the last EBS was successful; 850 * 3. if only single scan, the single scan EBS API is supported; 851 * 4. it's not a p2p find operation. 852 * 5. we are not in low latency mode, 853 * or if fragmented ebs is supported by the FW 854 */ 855 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 856 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 857 vif->type != NL80211_IFTYPE_P2P_DEVICE && 858 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 859 } 860 861 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 862 { 863 return params->n_scan_plans == 1 && 864 params->scan_plans[0].iterations == 1; 865 } 866 867 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 868 { 869 return (type == IWL_SCAN_TYPE_FRAGMENTED || 870 type == IWL_SCAN_TYPE_FAST_BALANCE); 871 } 872 873 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 874 struct iwl_mvm_scan_params *params, 875 struct ieee80211_vif *vif) 876 { 877 int flags = 0; 878 879 if (params->n_ssids == 0) 880 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 881 882 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 883 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 884 885 if (iwl_mvm_is_scan_fragmented(params->type)) 886 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 887 888 if (iwl_mvm_rrm_scan_needed(mvm) && 889 fw_has_capa(&mvm->fw->ucode_capa, 890 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 891 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 892 893 if (params->pass_all) 894 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 895 else 896 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 897 898 #ifdef CONFIG_IWLWIFI_DEBUGFS 899 if (mvm->scan_iter_notif_enabled) 900 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 901 #endif 902 903 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 904 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 905 906 if (iwl_mvm_is_regular_scan(params) && 907 vif->type != NL80211_IFTYPE_P2P_DEVICE && 908 !iwl_mvm_is_scan_fragmented(params->type)) 909 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 910 911 return flags; 912 } 913 914 static void 915 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 916 struct iwl_scan_probe_req *src_p_req) 917 { 918 int i; 919 920 p_req->mac_header = src_p_req->mac_header; 921 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 922 p_req->band_data[i] = src_p_req->band_data[i]; 923 p_req->common_data = src_p_req->common_data; 924 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 925 } 926 927 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 928 struct iwl_mvm_scan_params *params) 929 { 930 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 931 struct iwl_scan_probe_req_v1 *preq = 932 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 933 mvm->fw->ucode_capa.n_scan_channels); 934 u32 ssid_bitmap = 0; 935 int i; 936 u8 band; 937 938 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 939 return -EINVAL; 940 941 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 942 943 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 944 cmd->iter_num = cpu_to_le32(1); 945 cmd->n_channels = (u8)params->n_channels; 946 947 cmd->delay = cpu_to_le32(params->delay); 948 949 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 950 vif)); 951 952 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 953 cmd->flags = cpu_to_le32(band); 954 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 955 MAC_FILTER_IN_BEACON); 956 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 957 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 958 959 /* this API uses bits 1-20 instead of 0-19 */ 960 ssid_bitmap <<= 1; 961 962 for (i = 0; i < params->n_scan_plans; i++) { 963 struct cfg80211_sched_scan_plan *scan_plan = 964 ¶ms->scan_plans[i]; 965 966 cmd->schedule[i].delay = 967 cpu_to_le16(scan_plan->interval); 968 cmd->schedule[i].iterations = scan_plan->iterations; 969 cmd->schedule[i].full_scan_mul = 1; 970 } 971 972 /* 973 * If the number of iterations of the last scan plan is set to 974 * zero, it should run infinitely. However, this is not always the case. 975 * For example, when regular scan is requested the driver sets one scan 976 * plan with one iteration. 977 */ 978 if (!cmd->schedule[i - 1].iterations) 979 cmd->schedule[i - 1].iterations = 0xff; 980 981 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 982 cmd->channel_opt[0].flags = 983 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 984 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 985 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 986 cmd->channel_opt[0].non_ebs_ratio = 987 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 988 cmd->channel_opt[1].flags = 989 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 990 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 991 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 992 cmd->channel_opt[1].non_ebs_ratio = 993 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 994 } 995 996 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 997 params->n_channels, ssid_bitmap, cmd); 998 999 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1000 1001 return 0; 1002 } 1003 1004 static int rate_to_scan_rate_flag(unsigned int rate) 1005 { 1006 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1007 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1008 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1009 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1010 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1011 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1012 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1013 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1014 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1015 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1016 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1017 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1018 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1019 }; 1020 1021 return rate_to_scan_rate[rate]; 1022 } 1023 1024 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1025 { 1026 struct ieee80211_supported_band *band; 1027 unsigned int rates = 0; 1028 int i; 1029 1030 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1031 for (i = 0; i < band->n_bitrates; i++) 1032 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1033 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1034 for (i = 0; i < band->n_bitrates; i++) 1035 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1036 1037 /* Set both basic rates and supported rates */ 1038 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1039 1040 return cpu_to_le32(rates); 1041 } 1042 1043 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1044 struct iwl_scan_dwell *dwell) 1045 { 1046 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1047 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1048 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1049 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1050 } 1051 1052 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1053 u32 max_channels) 1054 { 1055 struct ieee80211_supported_band *band; 1056 int i, j = 0; 1057 1058 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1059 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1060 channels[j] = band->channels[i].hw_value; 1061 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1062 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1063 channels[j] = band->channels[i].hw_value; 1064 } 1065 1066 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1067 u32 flags, u8 channel_flags, 1068 u32 max_channels) 1069 { 1070 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1071 struct iwl_scan_config_v1 *cfg = config; 1072 1073 cfg->flags = cpu_to_le32(flags); 1074 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1075 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1076 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1077 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1078 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1079 1080 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1081 1082 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1083 1084 /* This function should not be called when using ADD_STA ver >=12 */ 1085 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1086 1087 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1088 cfg->channel_flags = channel_flags; 1089 1090 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1091 } 1092 1093 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1094 u32 flags, u8 channel_flags, 1095 u32 max_channels) 1096 { 1097 struct iwl_scan_config_v2 *cfg = config; 1098 1099 cfg->flags = cpu_to_le32(flags); 1100 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1101 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1102 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1103 1104 if (iwl_mvm_is_cdb_supported(mvm)) { 1105 enum iwl_mvm_scan_type lb_type, hb_type; 1106 1107 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1108 NL80211_BAND_2GHZ); 1109 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1110 NL80211_BAND_5GHZ); 1111 1112 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1113 cpu_to_le32(scan_timing[lb_type].max_out_time); 1114 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1115 cpu_to_le32(scan_timing[lb_type].suspend_time); 1116 1117 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1118 cpu_to_le32(scan_timing[hb_type].max_out_time); 1119 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1120 cpu_to_le32(scan_timing[hb_type].suspend_time); 1121 } else { 1122 enum iwl_mvm_scan_type type = 1123 iwl_mvm_get_scan_type(mvm, NULL); 1124 1125 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1126 cpu_to_le32(scan_timing[type].max_out_time); 1127 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1128 cpu_to_le32(scan_timing[type].suspend_time); 1129 } 1130 1131 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1132 1133 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1134 1135 /* This function should not be called when using ADD_STA ver >=12 */ 1136 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1137 1138 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1139 cfg->channel_flags = channel_flags; 1140 1141 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1142 } 1143 1144 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1145 { 1146 void *cfg; 1147 int ret, cmd_size; 1148 struct iwl_host_cmd cmd = { 1149 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1150 }; 1151 enum iwl_mvm_scan_type type; 1152 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1153 int num_channels = 1154 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1155 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1156 u32 flags; 1157 u8 channel_flags; 1158 1159 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1160 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1161 1162 if (iwl_mvm_is_cdb_supported(mvm)) { 1163 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1164 NL80211_BAND_2GHZ); 1165 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1166 NL80211_BAND_5GHZ); 1167 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1168 return 0; 1169 } else { 1170 type = iwl_mvm_get_scan_type(mvm, NULL); 1171 if (type == mvm->scan_type) 1172 return 0; 1173 } 1174 1175 if (iwl_mvm_cdb_scan_api(mvm)) 1176 cmd_size = sizeof(struct iwl_scan_config_v2); 1177 else 1178 cmd_size = sizeof(struct iwl_scan_config_v1); 1179 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1180 1181 cfg = kzalloc(cmd_size, GFP_KERNEL); 1182 if (!cfg) 1183 return -ENOMEM; 1184 1185 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1186 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1187 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1188 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1189 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1190 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1191 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1192 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1193 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1194 SCAN_CONFIG_N_CHANNELS(num_channels) | 1195 (iwl_mvm_is_scan_fragmented(type) ? 1196 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1197 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1198 1199 channel_flags = IWL_CHANNEL_FLAG_EBS | 1200 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1201 IWL_CHANNEL_FLAG_EBS_ADD | 1202 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1203 1204 /* 1205 * Check for fragmented scan on LMAC2 - high band. 1206 * LMAC1 - low band is checked above. 1207 */ 1208 if (iwl_mvm_cdb_scan_api(mvm)) { 1209 if (iwl_mvm_is_cdb_supported(mvm)) 1210 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1211 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1212 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1213 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1214 num_channels); 1215 } else { 1216 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1217 num_channels); 1218 } 1219 1220 cmd.data[0] = cfg; 1221 cmd.len[0] = cmd_size; 1222 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1223 1224 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1225 1226 ret = iwl_mvm_send_cmd(mvm, &cmd); 1227 if (!ret) { 1228 mvm->scan_type = type; 1229 mvm->hb_scan_type = hb_type; 1230 } 1231 1232 kfree(cfg); 1233 return ret; 1234 } 1235 1236 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1237 { 1238 struct iwl_scan_config cfg; 1239 struct iwl_host_cmd cmd = { 1240 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1241 .len[0] = sizeof(cfg), 1242 .data[0] = &cfg, 1243 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1244 }; 1245 1246 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1247 return iwl_mvm_legacy_config_scan(mvm); 1248 1249 memset(&cfg, 0, sizeof(cfg)); 1250 1251 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 1252 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1253 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1254 /* 1255 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1256 * version 5. 1257 */ 1258 cfg.bcast_sta_id = 0xff; 1259 } 1260 1261 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1262 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1263 1264 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1265 1266 return iwl_mvm_send_cmd(mvm, &cmd); 1267 } 1268 1269 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1270 { 1271 int i; 1272 1273 for (i = 0; i < mvm->max_scans; i++) 1274 if (mvm->scan_uid_status[i] == status) 1275 return i; 1276 1277 return -ENOENT; 1278 } 1279 1280 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1281 struct iwl_scan_req_umac *cmd, 1282 struct iwl_mvm_scan_params *params) 1283 { 1284 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1285 u8 active_dwell, passive_dwell; 1286 1287 timing = &scan_timing[params->type]; 1288 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1289 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1290 1291 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1292 cmd->v7.adwell_default_n_aps_social = 1293 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1294 cmd->v7.adwell_default_n_aps = 1295 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1296 1297 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1298 cmd->v9.adwell_default_hb_n_aps = 1299 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1300 1301 /* if custom max budget was configured with debugfs */ 1302 if (IWL_MVM_ADWELL_MAX_BUDGET) 1303 cmd->v7.adwell_max_budget = 1304 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1305 else if (params->ssids && params->ssids[0].ssid_len) 1306 cmd->v7.adwell_max_budget = 1307 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1308 else 1309 cmd->v7.adwell_max_budget = 1310 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1311 1312 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1313 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1314 cpu_to_le32(timing->max_out_time); 1315 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1316 cpu_to_le32(timing->suspend_time); 1317 1318 if (iwl_mvm_is_cdb_supported(mvm)) { 1319 hb_timing = &scan_timing[params->hb_type]; 1320 1321 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1322 cpu_to_le32(hb_timing->max_out_time); 1323 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1324 cpu_to_le32(hb_timing->suspend_time); 1325 } 1326 1327 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1328 cmd->v7.active_dwell = active_dwell; 1329 cmd->v7.passive_dwell = passive_dwell; 1330 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1331 } else { 1332 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1333 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1334 if (iwl_mvm_is_cdb_supported(mvm)) { 1335 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1336 active_dwell; 1337 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1338 passive_dwell; 1339 } 1340 } 1341 } else { 1342 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1343 cmd->v1.active_dwell = active_dwell; 1344 cmd->v1.passive_dwell = passive_dwell; 1345 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1346 1347 if (iwl_mvm_is_cdb_supported(mvm)) { 1348 hb_timing = &scan_timing[params->hb_type]; 1349 1350 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1351 cpu_to_le32(hb_timing->max_out_time); 1352 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1353 cpu_to_le32(hb_timing->suspend_time); 1354 } 1355 1356 if (iwl_mvm_cdb_scan_api(mvm)) { 1357 cmd->v6.scan_priority = 1358 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1359 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1360 cpu_to_le32(timing->max_out_time); 1361 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1362 cpu_to_le32(timing->suspend_time); 1363 } else { 1364 cmd->v1.scan_priority = 1365 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1366 cmd->v1.max_out_time = 1367 cpu_to_le32(timing->max_out_time); 1368 cmd->v1.suspend_time = 1369 cpu_to_le32(timing->suspend_time); 1370 } 1371 } 1372 1373 if (iwl_mvm_is_regular_scan(params)) 1374 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1375 else 1376 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1377 } 1378 1379 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1380 { 1381 return iwl_mvm_is_regular_scan(params) ? 1382 IWL_SCAN_PRIORITY_EXT_6 : 1383 IWL_SCAN_PRIORITY_EXT_2; 1384 } 1385 1386 static void 1387 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1388 struct iwl_scan_general_params_v11 *general_params, 1389 struct iwl_mvm_scan_params *params) 1390 { 1391 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1392 u8 active_dwell, passive_dwell; 1393 1394 timing = &scan_timing[params->type]; 1395 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1396 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1397 1398 general_params->adwell_default_social_chn = 1399 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1400 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1401 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1402 1403 /* if custom max budget was configured with debugfs */ 1404 if (IWL_MVM_ADWELL_MAX_BUDGET) 1405 general_params->adwell_max_budget = 1406 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1407 else if (params->ssids && params->ssids[0].ssid_len) 1408 general_params->adwell_max_budget = 1409 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1410 else 1411 general_params->adwell_max_budget = 1412 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1413 1414 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1415 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1416 cpu_to_le32(timing->max_out_time); 1417 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1418 cpu_to_le32(timing->suspend_time); 1419 1420 hb_timing = &scan_timing[params->hb_type]; 1421 1422 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1423 cpu_to_le32(hb_timing->max_out_time); 1424 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1425 cpu_to_le32(hb_timing->suspend_time); 1426 1427 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1428 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1429 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1430 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1431 } 1432 1433 struct iwl_mvm_scan_channel_segment { 1434 u8 start_idx; 1435 u8 end_idx; 1436 u8 first_channel_id; 1437 u8 last_channel_id; 1438 u8 channel_spacing_shift; 1439 u8 band; 1440 }; 1441 1442 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1443 { 1444 .start_idx = 0, 1445 .end_idx = 13, 1446 .first_channel_id = 1, 1447 .last_channel_id = 14, 1448 .channel_spacing_shift = 0, 1449 .band = PHY_BAND_24 1450 }, 1451 { 1452 .start_idx = 14, 1453 .end_idx = 41, 1454 .first_channel_id = 36, 1455 .last_channel_id = 144, 1456 .channel_spacing_shift = 2, 1457 .band = PHY_BAND_5 1458 }, 1459 { 1460 .start_idx = 42, 1461 .end_idx = 50, 1462 .first_channel_id = 149, 1463 .last_channel_id = 181, 1464 .channel_spacing_shift = 2, 1465 .band = PHY_BAND_5 1466 }, 1467 { 1468 .start_idx = 51, 1469 .end_idx = 111, 1470 .first_channel_id = 1, 1471 .last_channel_id = 241, 1472 .channel_spacing_shift = 2, 1473 .band = PHY_BAND_6 1474 }, 1475 }; 1476 1477 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1478 { 1479 int i, index; 1480 1481 if (!channel_id) 1482 return -EINVAL; 1483 1484 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1485 const struct iwl_mvm_scan_channel_segment *ch_segment = 1486 &scan_channel_segments[i]; 1487 u32 ch_offset; 1488 1489 if (ch_segment->band != band || 1490 ch_segment->first_channel_id > channel_id || 1491 ch_segment->last_channel_id < channel_id) 1492 continue; 1493 1494 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1495 ch_segment->channel_spacing_shift; 1496 1497 index = scan_channel_segments[i].start_idx + ch_offset; 1498 if (index < IWL_SCAN_NUM_CHANNELS) 1499 return index; 1500 1501 break; 1502 } 1503 1504 return -EINVAL; 1505 } 1506 1507 static const u8 p2p_go_friendly_chs[] = { 1508 36, 40, 44, 48, 149, 153, 157, 161, 165, 1509 }; 1510 1511 static const u8 social_chs[] = { 1512 1, 6, 11 1513 }; 1514 1515 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1516 u8 ch_id, u8 band, u8 *ch_bitmap, 1517 size_t bitmap_n_entries) 1518 { 1519 int i; 1520 1521 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1522 return; 1523 1524 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1525 if (p2p_go_friendly_chs[i] == ch_id) { 1526 int ch_idx, bitmap_idx; 1527 1528 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1529 if (ch_idx < 0) 1530 return; 1531 1532 bitmap_idx = ch_idx / 8; 1533 if (bitmap_idx >= bitmap_n_entries) 1534 return; 1535 1536 ch_idx = ch_idx % 8; 1537 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1538 1539 return; 1540 } 1541 } 1542 } 1543 1544 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1545 { 1546 int i; 1547 u32 flags = 0; 1548 1549 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1550 goto out; 1551 1552 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1553 if (p2p_go_friendly_chs[i] == ch_id) { 1554 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1555 break; 1556 } 1557 } 1558 1559 if (flags) 1560 goto out; 1561 1562 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1563 if (social_chs[i] == ch_id) { 1564 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1565 break; 1566 } 1567 } 1568 1569 out: 1570 return flags; 1571 } 1572 1573 static void 1574 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1575 struct ieee80211_channel **channels, 1576 int n_channels, u32 flags, 1577 struct iwl_scan_channel_cfg_umac *channel_cfg) 1578 { 1579 int i; 1580 1581 for (i = 0; i < n_channels; i++) { 1582 channel_cfg[i].flags = cpu_to_le32(flags); 1583 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1584 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1585 enum nl80211_band band = channels[i]->band; 1586 1587 channel_cfg[i].v2.band = 1588 iwl_mvm_phy_band_from_nl80211(band); 1589 channel_cfg[i].v2.iter_count = 1; 1590 channel_cfg[i].v2.iter_interval = 0; 1591 } else { 1592 channel_cfg[i].v1.iter_count = 1; 1593 channel_cfg[i].v1.iter_interval = 0; 1594 } 1595 } 1596 } 1597 1598 static void 1599 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1600 struct ieee80211_channel **channels, 1601 struct iwl_scan_channel_params_v4 *cp, 1602 int n_channels, u32 flags, 1603 enum nl80211_iftype vif_type) 1604 { 1605 u8 *bitmap = cp->adwell_ch_override_bitmap; 1606 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1607 int i; 1608 1609 for (i = 0; i < n_channels; i++) { 1610 enum nl80211_band band = channels[i]->band; 1611 struct iwl_scan_channel_cfg_umac *cfg = 1612 &cp->channel_config[i]; 1613 1614 cfg->flags = cpu_to_le32(flags); 1615 cfg->v2.channel_num = channels[i]->hw_value; 1616 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1617 cfg->v2.iter_count = 1; 1618 cfg->v2.iter_interval = 0; 1619 1620 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1621 cfg->v2.channel_num, 1622 cfg->v2.band, bitmap, 1623 bitmap_n_entries); 1624 } 1625 } 1626 1627 static void 1628 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1629 struct ieee80211_channel **channels, 1630 struct iwl_scan_channel_params_v6 *cp, 1631 int n_channels, u32 flags, 1632 enum nl80211_iftype vif_type) 1633 { 1634 int i; 1635 1636 for (i = 0; i < n_channels; i++) { 1637 enum nl80211_band band = channels[i]->band; 1638 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1639 u32 n_aps_flag = 1640 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1641 channels[i]->hw_value); 1642 1643 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1644 cfg->v2.channel_num = channels[i]->hw_value; 1645 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1646 if (cfg80211_channel_is_psc(channels[i])) 1647 cfg->flags = 0; 1648 cfg->v2.iter_count = 1; 1649 cfg->v2.iter_interval = 0; 1650 } 1651 } 1652 1653 static void 1654 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1655 struct iwl_mvm_scan_params *params, 1656 struct iwl_scan_probe_params_v4 *pp) 1657 { 1658 int j, idex_s = 0, idex_b = 0; 1659 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1660 params->scan_6ghz_params; 1661 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1662 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1663 1664 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1665 j++) { 1666 if (!params->ssids[j].ssid_len) 1667 continue; 1668 1669 pp->short_ssid[idex_s] = 1670 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1671 params->ssids[j].ssid_len)); 1672 1673 if (hidden_supported) { 1674 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1675 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1676 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1677 params->ssids[j].ssid_len); 1678 } 1679 idex_s++; 1680 } 1681 1682 /* 1683 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1684 * collocated parameters. This might not be optimal, as this processing 1685 * does not (yet) correspond to the actual channels, so it is possible 1686 * that some entries would be left out. 1687 * 1688 * TODO: improve this logic. 1689 */ 1690 for (j = 0; j < params->n_6ghz_params; j++) { 1691 int k; 1692 1693 /* First, try to place the short SSID */ 1694 if (scan_6ghz_params[j].short_ssid_valid) { 1695 for (k = 0; k < idex_s; k++) { 1696 if (pp->short_ssid[k] == 1697 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1698 break; 1699 } 1700 1701 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1702 pp->short_ssid[idex_s++] = 1703 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1704 } 1705 } 1706 1707 /* try to place BSSID for the same entry */ 1708 for (k = 0; k < idex_b; k++) { 1709 if (!memcmp(&pp->bssid_array[k], 1710 scan_6ghz_params[j].bssid, ETH_ALEN)) 1711 break; 1712 } 1713 1714 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1715 memcpy(&pp->bssid_array[idex_b++], 1716 scan_6ghz_params[j].bssid, ETH_ALEN); 1717 } 1718 } 1719 1720 pp->short_ssid_num = idex_s; 1721 pp->bssid_num = idex_b; 1722 } 1723 1724 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1725 static u32 1726 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm *mvm, 1727 struct iwl_mvm_scan_params *params, 1728 u32 n_channels, 1729 struct iwl_scan_probe_params_v4 *pp, 1730 struct iwl_scan_channel_params_v6 *cp, 1731 enum nl80211_iftype vif_type) 1732 { 1733 int i; 1734 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1735 params->scan_6ghz_params; 1736 u32 ch_cnt; 1737 1738 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1739 struct iwl_scan_channel_cfg_umac *cfg = 1740 &cp->channel_config[ch_cnt]; 1741 1742 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1743 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1744 bool force_passive, found = false, allow_passive = true, 1745 unsolicited_probe_on_chan = false, psc_no_listen = false; 1746 1747 /* 1748 * Avoid performing passive scan on non PSC channels unless the 1749 * scan is specifically a passive scan, i.e., no SSIDs 1750 * configured in the scan command. 1751 */ 1752 if (!cfg80211_channel_is_psc(params->channels[i]) && 1753 !params->n_6ghz_params && params->n_ssids) 1754 continue; 1755 1756 cfg->v1.channel_num = params->channels[i]->hw_value; 1757 cfg->v2.band = 2; 1758 cfg->v2.iter_count = 1; 1759 cfg->v2.iter_interval = 0; 1760 1761 /* 1762 * The optimize the scan time, i.e., reduce the scan dwell time 1763 * on each channel, the below logic tries to set 3 direct BSSID 1764 * probe requests for each broadcast probe request with a short 1765 * SSID. 1766 * TODO: improve this logic 1767 */ 1768 n_used_bssid_entries = 3; 1769 for (j = 0; j < params->n_6ghz_params; j++) { 1770 if (!(scan_6ghz_params[j].channel_idx == i)) 1771 continue; 1772 1773 found = false; 1774 unsolicited_probe_on_chan |= 1775 scan_6ghz_params[j].unsolicited_probe; 1776 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1777 1778 for (k = 0; k < pp->short_ssid_num; k++) { 1779 if (!scan_6ghz_params[j].unsolicited_probe && 1780 le32_to_cpu(pp->short_ssid[k]) == 1781 scan_6ghz_params[j].short_ssid) { 1782 /* Relevant short SSID bit set */ 1783 if (s_ssid_bitmap & BIT(k)) { 1784 found = true; 1785 break; 1786 } 1787 1788 /* 1789 * Use short SSID only to create a new 1790 * iteration during channel dwell or in 1791 * case that the short SSID has a 1792 * matching SSID, i.e., scan for hidden 1793 * APs. 1794 */ 1795 if (n_used_bssid_entries >= 3) { 1796 s_ssid_bitmap |= BIT(k); 1797 s_max++; 1798 n_used_bssid_entries -= 3; 1799 found = true; 1800 break; 1801 } else if (pp->direct_scan[k].len) { 1802 s_ssid_bitmap |= BIT(k); 1803 s_max++; 1804 found = true; 1805 allow_passive = false; 1806 break; 1807 } 1808 } 1809 } 1810 1811 if (found) 1812 continue; 1813 1814 for (k = 0; k < pp->bssid_num; k++) { 1815 if (!memcmp(&pp->bssid_array[k], 1816 scan_6ghz_params[j].bssid, 1817 ETH_ALEN)) { 1818 if (!(bssid_bitmap & BIT(k))) { 1819 bssid_bitmap |= BIT(k); 1820 b_max++; 1821 n_used_bssid_entries++; 1822 } 1823 break; 1824 } 1825 } 1826 } 1827 1828 if (cfg80211_channel_is_psc(params->channels[i]) && 1829 psc_no_listen) 1830 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1831 1832 if (unsolicited_probe_on_chan) 1833 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1834 1835 /* 1836 * In the following cases apply passive scan: 1837 * 1. Non fragmented scan: 1838 * - PSC channel with NO_LISTEN_FLAG on should be treated 1839 * like non PSC channel 1840 * - Non PSC channel with more than 3 short SSIDs or more 1841 * than 9 BSSIDs. 1842 * - Non PSC Channel with unsolicited probe response and 1843 * more than 2 short SSIDs or more than 6 BSSIDs. 1844 * - PSC channel with more than 2 short SSIDs or more than 1845 * 6 BSSIDs. 1846 * 3. Fragmented scan: 1847 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1848 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1849 * - Non PSC channel with unsolicited probe response and 1850 * more than 1 SSID or more than 3 BSSIDs. 1851 */ 1852 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1853 if (!cfg80211_channel_is_psc(params->channels[i]) || 1854 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1855 force_passive = (s_max > 3 || b_max > 9); 1856 force_passive |= (unsolicited_probe_on_chan && 1857 (s_max > 2 || b_max > 6)); 1858 } else { 1859 force_passive = (s_max > 2 || b_max > 6); 1860 } 1861 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1862 force_passive = (s_max > 1 || b_max > 3); 1863 } else { 1864 force_passive = (s_max > 2 || b_max > 6); 1865 force_passive |= (unsolicited_probe_on_chan && 1866 (s_max > 1 || b_max > 3)); 1867 } 1868 if ((allow_passive && force_passive) || 1869 (!(bssid_bitmap | s_ssid_bitmap) && 1870 !cfg80211_channel_is_psc(params->channels[i]))) 1871 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1872 else 1873 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1874 1875 cfg->flags |= cpu_to_le32(flags); 1876 ch_cnt++; 1877 } 1878 1879 if (params->n_channels > ch_cnt) 1880 IWL_DEBUG_SCAN(mvm, 1881 "6GHz: reducing number channels: (%u->%u)\n", 1882 params->n_channels, ch_cnt); 1883 1884 return ch_cnt; 1885 } 1886 1887 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1888 struct iwl_mvm_scan_params *params, 1889 struct ieee80211_vif *vif) 1890 { 1891 u8 flags = 0; 1892 1893 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1894 1895 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1896 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1897 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1898 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1899 1900 /* set fragmented ebs for fragmented scan on HB channels */ 1901 if ((!iwl_mvm_is_cdb_supported(mvm) && 1902 iwl_mvm_is_scan_fragmented(params->type)) || 1903 (iwl_mvm_is_cdb_supported(mvm) && 1904 iwl_mvm_is_scan_fragmented(params->hb_type))) 1905 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1906 1907 /* 1908 * force EBS in case the scan is a fragmented and there is a need to take P2P 1909 * GO operation into consideration during scan operation. 1910 */ 1911 if ((!iwl_mvm_is_cdb_supported(mvm) && 1912 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1913 (iwl_mvm_is_cdb_supported(mvm) && 1914 iwl_mvm_is_scan_fragmented(params->hb_type) && 1915 params->respect_p2p_go_hb)) { 1916 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1917 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1918 } 1919 1920 return flags; 1921 } 1922 1923 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1924 struct iwl_mvm_scan_params *params, 1925 struct ieee80211_vif *vif) 1926 { 1927 struct ieee80211_supported_band *sband = 1928 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1929 u32 n_disabled, i; 1930 1931 params->enable_6ghz_passive = false; 1932 1933 if (params->scan_6ghz) 1934 return; 1935 1936 if (!fw_has_capa(&mvm->fw->ucode_capa, 1937 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 1938 IWL_DEBUG_SCAN(mvm, 1939 "6GHz passive scan: Not supported by FW\n"); 1940 return; 1941 } 1942 1943 /* 6GHz passive scan allowed only on station interface */ 1944 if (vif->type != NL80211_IFTYPE_STATION) { 1945 IWL_DEBUG_SCAN(mvm, 1946 "6GHz passive scan: not station interface\n"); 1947 return; 1948 } 1949 1950 /* 1951 * 6GHz passive scan is allowed in a defined time interval following HW 1952 * reset or resume flow, or while not associated and a large interval 1953 * has passed since the last 6GHz passive scan. 1954 */ 1955 if ((vif->bss_conf.assoc || 1956 time_after(mvm->last_6ghz_passive_scan_jiffies + 1957 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 1958 (time_before(mvm->last_reset_or_resume_time_jiffies + 1959 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 1960 jiffies))) { 1961 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 1962 vif->bss_conf.assoc ? "associated" : 1963 "timeout did not expire"); 1964 return; 1965 } 1966 1967 /* not enough channels in the regular scan request */ 1968 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 1969 IWL_DEBUG_SCAN(mvm, 1970 "6GHz passive scan: not enough channels\n"); 1971 return; 1972 } 1973 1974 for (i = 0; i < params->n_ssids; i++) { 1975 if (!params->ssids[i].ssid_len) 1976 break; 1977 } 1978 1979 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 1980 if (i == params->n_ssids) { 1981 IWL_DEBUG_SCAN(mvm, 1982 "6GHz passive scan: no wildcard SSID\n"); 1983 return; 1984 } 1985 1986 if (!sband || !sband->n_channels) { 1987 IWL_DEBUG_SCAN(mvm, 1988 "6GHz passive scan: no 6GHz channels\n"); 1989 return; 1990 } 1991 1992 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 1993 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 1994 n_disabled++; 1995 } 1996 1997 /* 1998 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 1999 * scan 2000 */ 2001 if (n_disabled != sband->n_channels) { 2002 IWL_DEBUG_SCAN(mvm, 2003 "6GHz passive scan: 6GHz channels enabled\n"); 2004 return; 2005 } 2006 2007 /* all conditions to enable 6ghz passive scan are satisfied */ 2008 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2009 params->enable_6ghz_passive = true; 2010 } 2011 2012 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2013 struct iwl_mvm_scan_params *params, 2014 struct ieee80211_vif *vif, 2015 int type) 2016 { 2017 u16 flags = 0; 2018 2019 /* 2020 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2021 * if there is a single SSID which is not the broadcast SSID, assume 2022 * that the scan is intended for roaming purposes and thus enable Rx on 2023 * all chains to improve chances of hearing the beacons/probe responses. 2024 */ 2025 if (params->n_ssids == 0) 2026 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2027 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2028 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2029 2030 if (iwl_mvm_is_scan_fragmented(params->type)) 2031 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2032 2033 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2034 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2035 2036 if (params->pass_all) 2037 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2038 else 2039 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2040 2041 if (!iwl_mvm_is_regular_scan(params)) 2042 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2043 2044 if (params->iter_notif || 2045 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2046 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2047 2048 if (IWL_MVM_ADWELL_ENABLE) 2049 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2050 2051 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2052 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2053 2054 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2055 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2056 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2057 2058 if (params->enable_6ghz_passive) 2059 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2060 2061 if (iwl_mvm_is_oce_supported(mvm) && 2062 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2063 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2064 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2065 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2066 2067 return flags; 2068 } 2069 2070 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2071 struct iwl_mvm_scan_params *params, 2072 struct ieee80211_vif *vif, int type) 2073 { 2074 u8 flags = 0; 2075 2076 if (iwl_mvm_is_cdb_supported(mvm)) { 2077 if (params->respect_p2p_go) 2078 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2079 if (params->respect_p2p_go_hb) 2080 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2081 } else { 2082 if (params->respect_p2p_go) 2083 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2084 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2085 } 2086 2087 return flags; 2088 } 2089 2090 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2091 struct iwl_mvm_scan_params *params, 2092 struct ieee80211_vif *vif) 2093 { 2094 u16 flags = 0; 2095 2096 if (params->n_ssids == 0) 2097 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2098 2099 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2100 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2101 2102 if (iwl_mvm_is_scan_fragmented(params->type)) 2103 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2104 2105 if (iwl_mvm_is_cdb_supported(mvm) && 2106 iwl_mvm_is_scan_fragmented(params->hb_type)) 2107 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2108 2109 if (iwl_mvm_rrm_scan_needed(mvm) && 2110 fw_has_capa(&mvm->fw->ucode_capa, 2111 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2112 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2113 2114 if (params->pass_all) 2115 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2116 else 2117 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2118 2119 if (!iwl_mvm_is_regular_scan(params)) 2120 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2121 2122 if (params->iter_notif) 2123 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2124 2125 #ifdef CONFIG_IWLWIFI_DEBUGFS 2126 if (mvm->scan_iter_notif_enabled) 2127 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2128 #endif 2129 2130 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2131 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2132 2133 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2134 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2135 2136 /* 2137 * Extended dwell is relevant only for low band to start with, as it is 2138 * being used for social channles only (1, 6, 11), so we can check 2139 * only scan type on low band also for CDB. 2140 */ 2141 if (iwl_mvm_is_regular_scan(params) && 2142 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2143 !iwl_mvm_is_scan_fragmented(params->type) && 2144 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2145 !iwl_mvm_is_oce_supported(mvm)) 2146 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2147 2148 if (iwl_mvm_is_oce_supported(mvm)) { 2149 if ((params->flags & 2150 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2151 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2152 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2153 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2154 * the same bit, we need to make sure that we use this bit here 2155 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2156 * used. */ 2157 if ((params->flags & 2158 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2159 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2160 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2161 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2162 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2163 } 2164 2165 return flags; 2166 } 2167 2168 static int 2169 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2170 struct iwl_scan_umac_schedule *schedule, 2171 __le16 *delay) 2172 { 2173 int i; 2174 if (WARN_ON(!params->n_scan_plans || 2175 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2176 return -EINVAL; 2177 2178 for (i = 0; i < params->n_scan_plans; i++) { 2179 struct cfg80211_sched_scan_plan *scan_plan = 2180 ¶ms->scan_plans[i]; 2181 2182 schedule[i].iter_count = scan_plan->iterations; 2183 schedule[i].interval = 2184 cpu_to_le16(scan_plan->interval); 2185 } 2186 2187 /* 2188 * If the number of iterations of the last scan plan is set to 2189 * zero, it should run infinitely. However, this is not always the case. 2190 * For example, when regular scan is requested the driver sets one scan 2191 * plan with one iteration. 2192 */ 2193 if (!schedule[params->n_scan_plans - 1].iter_count) 2194 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2195 2196 *delay = cpu_to_le16(params->delay); 2197 2198 return 0; 2199 } 2200 2201 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2202 struct iwl_mvm_scan_params *params, 2203 int type, int uid) 2204 { 2205 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2206 struct iwl_scan_umac_chan_param *chan_param; 2207 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2208 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2209 mvm->fw->ucode_capa.n_scan_channels; 2210 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2211 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2212 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2213 struct iwl_ssid_ie *direct_scan; 2214 int ret = 0; 2215 u32 ssid_bitmap = 0; 2216 u8 channel_flags = 0; 2217 u16 gen_flags; 2218 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2219 2220 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2221 2222 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2223 2224 mvm->scan_uid_status[uid] = type; 2225 2226 cmd->uid = cpu_to_le32(uid); 2227 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2228 cmd->general_flags = cpu_to_le16(gen_flags); 2229 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2230 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2231 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2232 IWL_SCAN_NUM_OF_FRAGS; 2233 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2234 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2235 IWL_SCAN_NUM_OF_FRAGS; 2236 2237 cmd->v8.general_flags2 = 2238 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2239 } 2240 2241 cmd->scan_start_mac_id = scan_vif->id; 2242 2243 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2244 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2245 2246 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2247 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2248 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2249 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2250 2251 /* set fragmented ebs for fragmented scan on HB channels */ 2252 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2253 if (gen_flags & 2254 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2255 (!iwl_mvm_is_cdb_supported(mvm) && 2256 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2257 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2258 } 2259 } 2260 2261 chan_param->flags = channel_flags; 2262 chan_param->count = params->n_channels; 2263 2264 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2265 &tail_v2->delay); 2266 if (ret) { 2267 mvm->scan_uid_status[uid] = 0; 2268 return ret; 2269 } 2270 2271 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2272 tail_v2->preq = params->preq; 2273 direct_scan = tail_v2->direct_scan; 2274 } else { 2275 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2276 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2277 ¶ms->preq); 2278 direct_scan = tail_v1->direct_scan; 2279 } 2280 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2281 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2282 params->n_channels, ssid_bitmap, 2283 cmd_data); 2284 return 0; 2285 } 2286 2287 static void 2288 iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm, 2289 struct iwl_mvm_scan_params *params, 2290 struct ieee80211_vif *vif, 2291 struct iwl_scan_general_params_v11 *gp, 2292 u16 gen_flags, u8 gen_flags2) 2293 { 2294 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2295 2296 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2297 2298 IWL_DEBUG_SCAN(mvm, "Gerenal: flags=0x%x, flags2=0x%x\n", 2299 gen_flags, gen_flags2); 2300 2301 gp->flags = cpu_to_le16(gen_flags); 2302 gp->flags2 = gen_flags2; 2303 2304 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2305 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2306 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2307 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2308 2309 gp->scan_start_mac_id = scan_vif->id; 2310 } 2311 2312 static void 2313 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2314 struct iwl_scan_probe_params_v3 *pp) 2315 { 2316 pp->preq = params->preq; 2317 pp->ssid_num = params->n_ssids; 2318 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2319 } 2320 2321 static void 2322 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2323 struct iwl_scan_probe_params_v4 *pp, 2324 u32 *bitmap_ssid) 2325 { 2326 pp->preq = params->preq; 2327 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2328 } 2329 2330 static void 2331 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2332 struct iwl_mvm_scan_params *params, 2333 struct ieee80211_vif *vif, 2334 struct iwl_scan_channel_params_v4 *cp, 2335 u32 channel_cfg_flags) 2336 { 2337 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2338 cp->count = params->n_channels; 2339 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2340 2341 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2342 params->n_channels, 2343 channel_cfg_flags, 2344 vif->type); 2345 } 2346 2347 static void 2348 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2349 struct iwl_mvm_scan_params *params, 2350 struct ieee80211_vif *vif, 2351 struct iwl_scan_channel_params_v6 *cp, 2352 u32 channel_cfg_flags) 2353 { 2354 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2355 cp->count = params->n_channels; 2356 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2357 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2358 2359 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2360 params->n_channels, 2361 channel_cfg_flags, 2362 vif->type); 2363 2364 if (params->enable_6ghz_passive) { 2365 struct ieee80211_supported_band *sband = 2366 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2367 u32 i; 2368 2369 for (i = 0; i < sband->n_channels; i++) { 2370 struct ieee80211_channel *channel = 2371 &sband->channels[i]; 2372 2373 struct iwl_scan_channel_cfg_umac *cfg = 2374 &cp->channel_config[cp->count]; 2375 2376 if (!cfg80211_channel_is_psc(channel)) 2377 continue; 2378 2379 cfg->flags = 0; 2380 cfg->v2.channel_num = channel->hw_value; 2381 cfg->v2.band = PHY_BAND_6; 2382 cfg->v2.iter_count = 1; 2383 cfg->v2.iter_interval = 0; 2384 cp->count++; 2385 } 2386 } 2387 } 2388 2389 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2390 struct iwl_mvm_scan_params *params, int type, 2391 int uid) 2392 { 2393 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2394 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2395 int ret; 2396 u16 gen_flags; 2397 2398 mvm->scan_uid_status[uid] = type; 2399 2400 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2401 cmd->uid = cpu_to_le32(uid); 2402 2403 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2404 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2405 &scan_p->general_params, 2406 gen_flags, 0); 2407 2408 ret = iwl_mvm_fill_scan_sched_params(params, 2409 scan_p->periodic_params.schedule, 2410 &scan_p->periodic_params.delay); 2411 if (ret) 2412 return ret; 2413 2414 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2415 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2416 &scan_p->channel_params, 0); 2417 2418 return 0; 2419 } 2420 2421 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2422 struct ieee80211_vif *vif, 2423 struct iwl_mvm_scan_params *params, 2424 int type, int uid, u32 version) 2425 { 2426 struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd; 2427 struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params; 2428 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2429 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2430 int ret; 2431 u16 gen_flags; 2432 u8 gen_flags2; 2433 u32 bitmap_ssid = 0; 2434 2435 mvm->scan_uid_status[uid] = type; 2436 2437 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2438 cmd->uid = cpu_to_le32(uid); 2439 2440 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2441 2442 if (version >= 15) 2443 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type); 2444 else 2445 gen_flags2 = 0; 2446 2447 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2448 &scan_p->general_params, 2449 gen_flags, gen_flags2); 2450 2451 ret = iwl_mvm_fill_scan_sched_params(params, 2452 scan_p->periodic_params.schedule, 2453 &scan_p->periodic_params.delay); 2454 if (ret) 2455 return ret; 2456 2457 if (!params->scan_6ghz) { 2458 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2459 &bitmap_ssid); 2460 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2461 &scan_p->channel_params, bitmap_ssid); 2462 2463 return 0; 2464 } else { 2465 pb->preq = params->preq; 2466 } 2467 2468 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2469 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2470 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2471 2472 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2473 2474 cp->count = iwl_mvm_umac_scan_cfg_channels_v6_6g(mvm, params, 2475 params->n_channels, 2476 pb, cp, vif->type); 2477 if (!cp->count) { 2478 mvm->scan_uid_status[uid] = 0; 2479 return -EINVAL; 2480 } 2481 2482 if (!params->n_ssids || 2483 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2484 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2485 2486 return 0; 2487 } 2488 2489 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2490 struct iwl_mvm_scan_params *params, int type, 2491 int uid) 2492 { 2493 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2494 } 2495 2496 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2497 struct iwl_mvm_scan_params *params, int type, 2498 int uid) 2499 { 2500 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2501 } 2502 2503 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2504 { 2505 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2506 } 2507 2508 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2509 { 2510 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2511 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2512 2513 /* This looks a bit arbitrary, but the idea is that if we run 2514 * out of possible simultaneous scans and the userspace is 2515 * trying to run a scan type that is already running, we 2516 * return -EBUSY. But if the userspace wants to start a 2517 * different type of scan, we stop the opposite type to make 2518 * space for the new request. The reason is backwards 2519 * compatibility with old wpa_supplicant that wouldn't stop a 2520 * scheduled scan before starting a normal scan. 2521 */ 2522 2523 /* FW supports only a single periodic scan */ 2524 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2525 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2526 return -EBUSY; 2527 2528 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2529 return 0; 2530 2531 /* Use a switch, even though this is a bitmask, so that more 2532 * than one bits set will fall in default and we will warn. 2533 */ 2534 switch (type) { 2535 case IWL_MVM_SCAN_REGULAR: 2536 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2537 return -EBUSY; 2538 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2539 case IWL_MVM_SCAN_SCHED: 2540 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2541 return -EBUSY; 2542 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2543 case IWL_MVM_SCAN_NETDETECT: 2544 /* For non-unified images, there's no need to stop 2545 * anything for net-detect since the firmware is 2546 * restarted anyway. This way, any sched scans that 2547 * were running will be restarted when we resume. 2548 */ 2549 if (!unified_image) 2550 return 0; 2551 2552 /* If this is a unified image and we ran out of scans, 2553 * we need to stop something. Prefer stopping regular 2554 * scans, because the results are useless at this 2555 * point, and we should be able to keep running 2556 * another scheduled scan while suspended. 2557 */ 2558 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2559 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2560 true); 2561 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2562 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2563 true); 2564 /* Something is wrong if no scan was running but we 2565 * ran out of scans. 2566 */ 2567 fallthrough; 2568 default: 2569 WARN_ON(1); 2570 break; 2571 } 2572 2573 return -EIO; 2574 } 2575 2576 #define SCAN_TIMEOUT 30000 2577 2578 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2579 { 2580 struct delayed_work *delayed_work = to_delayed_work(work); 2581 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2582 scan_timeout_dwork); 2583 2584 IWL_ERR(mvm, "regular scan timed out\n"); 2585 2586 iwl_force_nmi(mvm->trans); 2587 } 2588 2589 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2590 struct iwl_mvm_scan_params *params, 2591 struct ieee80211_vif *vif) 2592 { 2593 if (iwl_mvm_is_cdb_supported(mvm)) { 2594 params->type = 2595 iwl_mvm_get_scan_type_band(mvm, vif, 2596 NL80211_BAND_2GHZ); 2597 params->hb_type = 2598 iwl_mvm_get_scan_type_band(mvm, vif, 2599 NL80211_BAND_5GHZ); 2600 } else { 2601 params->type = iwl_mvm_get_scan_type(mvm, vif); 2602 } 2603 } 2604 2605 struct iwl_scan_umac_handler { 2606 u8 version; 2607 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2608 struct iwl_mvm_scan_params *params, int type, int uid); 2609 }; 2610 2611 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2612 .version = _ver, \ 2613 .handler = iwl_mvm_scan_umac_v##_ver, \ 2614 } 2615 2616 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2617 /* set the newest version first to shorten the list traverse time */ 2618 IWL_SCAN_UMAC_HANDLER(15), 2619 IWL_SCAN_UMAC_HANDLER(14), 2620 IWL_SCAN_UMAC_HANDLER(12), 2621 }; 2622 2623 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2624 struct ieee80211_vif *vif, 2625 struct iwl_host_cmd *hcmd, 2626 struct iwl_mvm_scan_params *params, 2627 int type) 2628 { 2629 int uid, i, err; 2630 u8 scan_ver; 2631 2632 lockdep_assert_held(&mvm->mutex); 2633 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2634 2635 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2636 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2637 2638 return iwl_mvm_scan_lmac(mvm, vif, params); 2639 } 2640 2641 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2642 if (uid < 0) 2643 return uid; 2644 2645 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2646 2647 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2648 IWL_FW_CMD_VER_UNKNOWN); 2649 2650 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2651 const struct iwl_scan_umac_handler *ver_handler = 2652 &iwl_scan_umac_handlers[i]; 2653 2654 if (ver_handler->version != scan_ver) 2655 continue; 2656 2657 return ver_handler->handler(mvm, vif, params, type, uid); 2658 } 2659 2660 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2661 if (err) 2662 return err; 2663 2664 return uid; 2665 } 2666 2667 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2668 struct ieee80211_vif *current_vif; 2669 bool p2p_go; 2670 enum nl80211_band band; 2671 }; 2672 2673 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2674 struct ieee80211_vif *vif) 2675 { 2676 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2677 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2678 2679 /* exclude the given vif */ 2680 if (vif == data->current_vif) 2681 return; 2682 2683 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 2684 mvmvif->phy_ctxt->id < NUM_PHY_CTX && 2685 (data->band == NUM_NL80211_BANDS || 2686 mvmvif->phy_ctxt->channel->band == data->band)) 2687 data->p2p_go = true; 2688 } 2689 2690 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2691 struct ieee80211_vif *vif, 2692 bool low_latency, 2693 enum nl80211_band band) 2694 { 2695 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2696 .current_vif = vif, 2697 .p2p_go = false, 2698 .band = band, 2699 }; 2700 2701 if (!low_latency) 2702 return false; 2703 2704 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2705 IEEE80211_IFACE_ITER_NORMAL, 2706 iwl_mvm_scan_respect_p2p_go_iter, 2707 &data); 2708 2709 return data.p2p_go; 2710 } 2711 2712 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2713 struct ieee80211_vif *vif, 2714 enum nl80211_band band) 2715 { 2716 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2717 2718 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2719 } 2720 2721 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2722 struct ieee80211_vif *vif) 2723 { 2724 bool low_latency = iwl_mvm_low_latency(mvm); 2725 2726 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2727 NUM_NL80211_BANDS); 2728 } 2729 2730 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2731 struct iwl_mvm_scan_params *params, 2732 struct ieee80211_vif *vif) 2733 { 2734 if (iwl_mvm_is_cdb_supported(mvm)) { 2735 params->respect_p2p_go = 2736 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2737 NL80211_BAND_2GHZ); 2738 params->respect_p2p_go_hb = 2739 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2740 NL80211_BAND_5GHZ); 2741 } else { 2742 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2743 } 2744 } 2745 2746 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2747 struct cfg80211_scan_request *req, 2748 struct ieee80211_scan_ies *ies) 2749 { 2750 struct iwl_host_cmd hcmd = { 2751 .len = { iwl_mvm_scan_size(mvm), }, 2752 .data = { mvm->scan_cmd, }, 2753 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2754 }; 2755 struct iwl_mvm_scan_params params = {}; 2756 int ret, uid; 2757 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2758 2759 lockdep_assert_held(&mvm->mutex); 2760 2761 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2762 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2763 return -EBUSY; 2764 } 2765 2766 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2767 if (ret) 2768 return ret; 2769 2770 /* we should have failed registration if scan_cmd was NULL */ 2771 if (WARN_ON(!mvm->scan_cmd)) 2772 return -ENOMEM; 2773 2774 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2775 return -ENOBUFS; 2776 2777 params.n_ssids = req->n_ssids; 2778 params.flags = req->flags; 2779 params.n_channels = req->n_channels; 2780 params.delay = 0; 2781 params.ssids = req->ssids; 2782 params.channels = req->channels; 2783 params.mac_addr = req->mac_addr; 2784 params.mac_addr_mask = req->mac_addr_mask; 2785 params.no_cck = req->no_cck; 2786 params.pass_all = true; 2787 params.n_match_sets = 0; 2788 params.match_sets = NULL; 2789 2790 params.scan_plans = &scan_plan; 2791 params.n_scan_plans = 1; 2792 2793 params.n_6ghz_params = req->n_6ghz_params; 2794 params.scan_6ghz_params = req->scan_6ghz_params; 2795 params.scan_6ghz = req->scan_6ghz; 2796 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2797 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2798 2799 if (req->duration) 2800 params.iter_notif = true; 2801 2802 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2803 2804 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 2805 2806 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2807 IWL_MVM_SCAN_REGULAR); 2808 2809 if (uid < 0) 2810 return uid; 2811 2812 iwl_mvm_pause_tcm(mvm, false); 2813 2814 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2815 if (ret) { 2816 /* If the scan failed, it usually means that the FW was unable 2817 * to allocate the time events. Warn on it, but maybe we 2818 * should try to send the command again with different params. 2819 */ 2820 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2821 iwl_mvm_resume_tcm(mvm); 2822 mvm->scan_uid_status[uid] = 0; 2823 return ret; 2824 } 2825 2826 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2827 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2828 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2829 2830 if (params.enable_6ghz_passive) 2831 mvm->last_6ghz_passive_scan_jiffies = jiffies; 2832 2833 schedule_delayed_work(&mvm->scan_timeout_dwork, 2834 msecs_to_jiffies(SCAN_TIMEOUT)); 2835 2836 return 0; 2837 } 2838 2839 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2840 struct ieee80211_vif *vif, 2841 struct cfg80211_sched_scan_request *req, 2842 struct ieee80211_scan_ies *ies, 2843 int type) 2844 { 2845 struct iwl_host_cmd hcmd = { 2846 .len = { iwl_mvm_scan_size(mvm), }, 2847 .data = { mvm->scan_cmd, }, 2848 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2849 }; 2850 struct iwl_mvm_scan_params params = {}; 2851 int ret, uid; 2852 int i, j; 2853 bool non_psc_included = false; 2854 2855 lockdep_assert_held(&mvm->mutex); 2856 2857 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2858 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2859 return -EBUSY; 2860 } 2861 2862 ret = iwl_mvm_check_running_scans(mvm, type); 2863 if (ret) 2864 return ret; 2865 2866 /* we should have failed registration if scan_cmd was NULL */ 2867 if (WARN_ON(!mvm->scan_cmd)) 2868 return -ENOMEM; 2869 2870 2871 params.n_ssids = req->n_ssids; 2872 params.flags = req->flags; 2873 params.n_channels = req->n_channels; 2874 params.ssids = req->ssids; 2875 params.channels = req->channels; 2876 params.mac_addr = req->mac_addr; 2877 params.mac_addr_mask = req->mac_addr_mask; 2878 params.no_cck = false; 2879 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2880 params.n_match_sets = req->n_match_sets; 2881 params.match_sets = req->match_sets; 2882 if (!req->n_scan_plans) 2883 return -EINVAL; 2884 2885 params.n_scan_plans = req->n_scan_plans; 2886 params.scan_plans = req->scan_plans; 2887 2888 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2889 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2890 2891 /* In theory, LMAC scans can handle a 32-bit delay, but since 2892 * waiting for over 18 hours to start the scan is a bit silly 2893 * and to keep it aligned with UMAC scans (which only support 2894 * 16-bit delays), trim it down to 16-bits. 2895 */ 2896 if (req->delay > U16_MAX) { 2897 IWL_DEBUG_SCAN(mvm, 2898 "delay value is > 16-bits, set to max possible\n"); 2899 params.delay = U16_MAX; 2900 } else { 2901 params.delay = req->delay; 2902 } 2903 2904 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2905 if (ret) 2906 return ret; 2907 2908 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2909 2910 /* for 6 GHZ band only PSC channels need to be added */ 2911 for (i = 0; i < params.n_channels; i++) { 2912 struct ieee80211_channel *channel = params.channels[i]; 2913 2914 if (channel->band == NL80211_BAND_6GHZ && 2915 !cfg80211_channel_is_psc(channel)) { 2916 non_psc_included = true; 2917 break; 2918 } 2919 } 2920 2921 if (non_psc_included) { 2922 params.channels = kmemdup(params.channels, 2923 sizeof(params.channels[0]) * 2924 params.n_channels, 2925 GFP_KERNEL); 2926 if (!params.channels) 2927 return -ENOMEM; 2928 2929 for (i = j = 0; i < params.n_channels; i++) { 2930 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2931 !cfg80211_channel_is_psc(params.channels[i])) 2932 continue; 2933 params.channels[j++] = params.channels[i]; 2934 } 2935 params.n_channels = j; 2936 } 2937 2938 if (non_psc_included && 2939 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2940 kfree(params.channels); 2941 return -ENOBUFS; 2942 } 2943 2944 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2945 2946 if (non_psc_included) 2947 kfree(params.channels); 2948 if (uid < 0) 2949 return uid; 2950 2951 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2952 if (!ret) { 2953 IWL_DEBUG_SCAN(mvm, 2954 "Sched scan request was sent successfully\n"); 2955 mvm->scan_status |= type; 2956 } else { 2957 /* If the scan failed, it usually means that the FW was unable 2958 * to allocate the time events. Warn on it, but maybe we 2959 * should try to send the command again with different params. 2960 */ 2961 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2962 mvm->scan_uid_status[uid] = 0; 2963 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2964 } 2965 2966 return ret; 2967 } 2968 2969 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2970 struct iwl_rx_cmd_buffer *rxb) 2971 { 2972 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2973 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2974 u32 uid = __le32_to_cpu(notif->uid); 2975 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2976 2977 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2978 return; 2979 2980 /* if the scan is already stopping, we don't need to notify mac80211 */ 2981 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2982 struct cfg80211_scan_info info = { 2983 .aborted = aborted, 2984 .scan_start_tsf = mvm->scan_start, 2985 }; 2986 2987 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2988 ieee80211_scan_completed(mvm->hw, &info); 2989 mvm->scan_vif = NULL; 2990 cancel_delayed_work(&mvm->scan_timeout_dwork); 2991 iwl_mvm_resume_tcm(mvm); 2992 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2993 ieee80211_sched_scan_stopped(mvm->hw); 2994 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2995 } 2996 2997 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2998 IWL_DEBUG_SCAN(mvm, 2999 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 3000 uid, mvm->scan_uid_status[uid], 3001 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3002 "completed" : "aborted", 3003 iwl_mvm_ebs_status_str(notif->ebs_status)); 3004 IWL_DEBUG_SCAN(mvm, 3005 "Last line %d, Last iteration %d, Time from last iteration %d\n", 3006 notif->last_schedule, notif->last_iter, 3007 __le32_to_cpu(notif->time_from_last_iter)); 3008 3009 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3010 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3011 mvm->last_ebs_successful = false; 3012 3013 mvm->scan_uid_status[uid] = 0; 3014 } 3015 3016 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3017 struct iwl_rx_cmd_buffer *rxb) 3018 { 3019 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3020 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3021 3022 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3023 3024 IWL_DEBUG_SCAN(mvm, 3025 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3026 notif->status, notif->scanned_channels); 3027 3028 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3029 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3030 ieee80211_sched_scan_results(mvm->hw); 3031 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3032 } 3033 3034 IWL_DEBUG_SCAN(mvm, 3035 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3036 mvm->scan_start); 3037 } 3038 3039 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 3040 { 3041 struct iwl_umac_scan_abort cmd = {}; 3042 int uid, ret; 3043 3044 lockdep_assert_held(&mvm->mutex); 3045 3046 /* We should always get a valid index here, because we already 3047 * checked that this type of scan was running in the generic 3048 * code. 3049 */ 3050 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3051 if (WARN_ON_ONCE(uid < 0)) 3052 return uid; 3053 3054 cmd.uid = cpu_to_le32(uid); 3055 3056 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3057 3058 ret = iwl_mvm_send_cmd_pdu(mvm, 3059 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3060 0, sizeof(cmd), &cmd); 3061 if (!ret) 3062 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3063 3064 return ret; 3065 } 3066 3067 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3068 { 3069 struct iwl_notification_wait wait_scan_done; 3070 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3071 SCAN_OFFLOAD_COMPLETE, }; 3072 int ret; 3073 3074 lockdep_assert_held(&mvm->mutex); 3075 3076 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3077 scan_done_notif, 3078 ARRAY_SIZE(scan_done_notif), 3079 NULL, NULL); 3080 3081 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3082 3083 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3084 ret = iwl_mvm_umac_scan_abort(mvm, type); 3085 else 3086 ret = iwl_mvm_lmac_scan_abort(mvm); 3087 3088 if (ret) { 3089 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3090 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3091 return ret; 3092 } 3093 3094 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3095 1 * HZ); 3096 } 3097 3098 static int iwl_scan_req_umac_get_size(u8 scan_ver) 3099 { 3100 switch (scan_ver) { 3101 case 12: 3102 return sizeof(struct iwl_scan_req_umac_v12); 3103 case 14: 3104 case 15: 3105 return sizeof(struct iwl_scan_req_umac_v15); 3106 } 3107 3108 return 0; 3109 } 3110 3111 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 3112 { 3113 int base_size, tail_size; 3114 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3115 IWL_FW_CMD_VER_UNKNOWN); 3116 3117 base_size = iwl_scan_req_umac_get_size(scan_ver); 3118 if (base_size) 3119 return base_size; 3120 3121 3122 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3123 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3124 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3125 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3126 else if (iwl_mvm_cdb_scan_api(mvm)) 3127 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3128 else 3129 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3130 3131 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3132 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3133 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3134 else 3135 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3136 3137 return base_size + 3138 sizeof(struct iwl_scan_channel_cfg_umac) * 3139 mvm->fw->ucode_capa.n_scan_channels + 3140 tail_size; 3141 } 3142 return sizeof(struct iwl_scan_req_lmac) + 3143 sizeof(struct iwl_scan_channel_cfg_lmac) * 3144 mvm->fw->ucode_capa.n_scan_channels + 3145 sizeof(struct iwl_scan_probe_req_v1); 3146 } 3147 3148 /* 3149 * This function is used in nic restart flow, to inform mac80211 about scans 3150 * that was aborted by restart flow or by an assert. 3151 */ 3152 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3153 { 3154 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3155 int uid, i; 3156 3157 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3158 if (uid >= 0) { 3159 struct cfg80211_scan_info info = { 3160 .aborted = true, 3161 }; 3162 3163 cancel_delayed_work(&mvm->scan_timeout_dwork); 3164 3165 ieee80211_scan_completed(mvm->hw, &info); 3166 mvm->scan_uid_status[uid] = 0; 3167 } 3168 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3169 if (uid >= 0) { 3170 /* Sched scan will be restarted by mac80211 in 3171 * restart_hw, so do not report if FW is about to be 3172 * restarted. 3173 */ 3174 if (!mvm->fw_restart) 3175 ieee80211_sched_scan_stopped(mvm->hw); 3176 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3177 mvm->scan_uid_status[uid] = 0; 3178 } 3179 uid = iwl_mvm_scan_uid_by_status(mvm, 3180 IWL_MVM_SCAN_STOPPING_REGULAR); 3181 if (uid >= 0) 3182 mvm->scan_uid_status[uid] = 0; 3183 3184 uid = iwl_mvm_scan_uid_by_status(mvm, 3185 IWL_MVM_SCAN_STOPPING_SCHED); 3186 if (uid >= 0) 3187 mvm->scan_uid_status[uid] = 0; 3188 3189 /* We shouldn't have any UIDs still set. Loop over all the 3190 * UIDs to make sure there's nothing left there and warn if 3191 * any is found. 3192 */ 3193 for (i = 0; i < mvm->max_scans; i++) { 3194 if (WARN_ONCE(mvm->scan_uid_status[i], 3195 "UMAC scan UID %d status was not cleaned\n", 3196 i)) 3197 mvm->scan_uid_status[i] = 0; 3198 } 3199 } else { 3200 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3201 struct cfg80211_scan_info info = { 3202 .aborted = true, 3203 }; 3204 3205 cancel_delayed_work(&mvm->scan_timeout_dwork); 3206 ieee80211_scan_completed(mvm->hw, &info); 3207 } 3208 3209 /* Sched scan will be restarted by mac80211 in 3210 * restart_hw, so do not report if FW is about to be 3211 * restarted. 3212 */ 3213 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3214 !mvm->fw_restart) { 3215 ieee80211_sched_scan_stopped(mvm->hw); 3216 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3217 } 3218 } 3219 } 3220 3221 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3222 { 3223 int ret; 3224 3225 if (!(mvm->scan_status & type)) 3226 return 0; 3227 3228 if (iwl_mvm_is_radio_killed(mvm)) { 3229 ret = 0; 3230 goto out; 3231 } 3232 3233 ret = iwl_mvm_scan_stop_wait(mvm, type); 3234 if (!ret) 3235 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3236 out: 3237 /* Clear the scan status so the next scan requests will 3238 * succeed and mark the scan as stopping, so that the Rx 3239 * handler doesn't do anything, as the scan was stopped from 3240 * above. 3241 */ 3242 mvm->scan_status &= ~type; 3243 3244 if (type == IWL_MVM_SCAN_REGULAR) { 3245 cancel_delayed_work(&mvm->scan_timeout_dwork); 3246 if (notify) { 3247 struct cfg80211_scan_info info = { 3248 .aborted = true, 3249 }; 3250 3251 ieee80211_scan_completed(mvm->hw, &info); 3252 } 3253 } else if (notify) { 3254 ieee80211_sched_scan_stopped(mvm->hw); 3255 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3256 } 3257 3258 return ret; 3259 } 3260