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 && 197 mvmvif->deflink.phy_ctxt && 198 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) 199 data->global_cnt += 1; 200 201 if (!data->current_vif || vif == data->current_vif) 202 return; 203 204 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 205 206 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 207 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && 208 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 209 data->is_dcm_with_p2p_go = true; 210 } 211 212 static enum 213 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 214 struct ieee80211_vif *vif, 215 enum iwl_mvm_traffic_load load, 216 bool low_latency) 217 { 218 struct iwl_mvm_scan_iter_data data = { 219 .current_vif = vif, 220 .is_dcm_with_p2p_go = false, 221 .global_cnt = 0, 222 }; 223 224 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 225 IEEE80211_IFACE_ITER_NORMAL, 226 iwl_mvm_scan_iterator, 227 &data); 228 229 if (!data.global_cnt) 230 return IWL_SCAN_TYPE_UNASSOC; 231 232 if (fw_has_api(&mvm->fw->ucode_capa, 233 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 234 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 235 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 236 return IWL_SCAN_TYPE_FRAGMENTED; 237 238 /* 239 * in case of DCM with GO where BSS DTIM interval < 220msec 240 * set all scan requests as fast-balance scan 241 */ 242 if (vif && vif->type == NL80211_IFTYPE_STATION && 243 vif->bss_conf.dtim_period < 220 && 244 data.is_dcm_with_p2p_go) 245 return IWL_SCAN_TYPE_FAST_BALANCE; 246 } 247 248 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 249 return IWL_SCAN_TYPE_MILD; 250 251 return IWL_SCAN_TYPE_WILD; 252 } 253 254 static enum 255 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 256 struct ieee80211_vif *vif) 257 { 258 enum iwl_mvm_traffic_load load; 259 bool low_latency; 260 261 load = iwl_mvm_get_traffic_load(mvm); 262 low_latency = iwl_mvm_low_latency(mvm); 263 264 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 265 } 266 267 static enum 268 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 269 struct ieee80211_vif *vif, 270 enum nl80211_band band) 271 { 272 enum iwl_mvm_traffic_load load; 273 bool low_latency; 274 275 load = iwl_mvm_get_traffic_load_band(mvm, band); 276 low_latency = iwl_mvm_low_latency_band(mvm, band); 277 278 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 279 } 280 281 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 282 { 283 /* require rrm scan whenever the fw supports it */ 284 return fw_has_capa(&mvm->fw->ucode_capa, 285 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 286 } 287 288 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 289 { 290 int max_probe_len; 291 292 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 293 294 /* we create the 802.11 header and SSID element */ 295 max_probe_len -= 24 + 2; 296 297 /* DS parameter set element is added on 2.4GHZ band if required */ 298 if (iwl_mvm_rrm_scan_needed(mvm)) 299 max_probe_len -= 3; 300 301 return max_probe_len; 302 } 303 304 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 305 { 306 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 307 308 /* TODO: [BUG] This function should return the maximum allowed size of 309 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 310 * in the same command. So the correct implementation of this function 311 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 312 * command has only 512 bytes and it would leave us with about 240 313 * bytes for scan IEs, which is clearly not enough. So meanwhile 314 * we will report an incorrect value. This may result in a failure to 315 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 316 * functions with -ENOBUFS, if a large enough probe will be provided. 317 */ 318 return max_ie_len; 319 } 320 321 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 322 struct iwl_rx_cmd_buffer *rxb) 323 { 324 struct iwl_rx_packet *pkt = rxb_addr(rxb); 325 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 326 327 IWL_DEBUG_SCAN(mvm, 328 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 329 notif->status, notif->scanned_channels); 330 331 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 332 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 333 ieee80211_sched_scan_results(mvm->hw); 334 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 335 } 336 } 337 338 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 339 struct iwl_rx_cmd_buffer *rxb) 340 { 341 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 342 ieee80211_sched_scan_results(mvm->hw); 343 } 344 345 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 346 { 347 switch (status) { 348 case IWL_SCAN_EBS_SUCCESS: 349 return "successful"; 350 case IWL_SCAN_EBS_INACTIVE: 351 return "inactive"; 352 case IWL_SCAN_EBS_FAILED: 353 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 354 default: 355 return "failed"; 356 } 357 } 358 359 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 360 struct iwl_rx_cmd_buffer *rxb) 361 { 362 struct iwl_rx_packet *pkt = rxb_addr(rxb); 363 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 364 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 365 366 /* If this happens, the firmware has mistakenly sent an LMAC 367 * notification during UMAC scans -- warn and ignore it. 368 */ 369 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 370 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 371 return; 372 373 /* scan status must be locked for proper checking */ 374 lockdep_assert_held(&mvm->mutex); 375 376 /* We first check if we were stopping a scan, in which case we 377 * just clear the stopping flag. Then we check if it was a 378 * firmware initiated stop, in which case we need to inform 379 * mac80211. 380 * Note that we can have a stopping and a running scan 381 * simultaneously, but we can't have two different types of 382 * scans stopping or running at the same time (since LMAC 383 * doesn't support it). 384 */ 385 386 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 387 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 388 389 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 390 aborted ? "aborted" : "completed", 391 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 392 IWL_DEBUG_SCAN(mvm, 393 "Last line %d, Last iteration %d, Time after last iteration %d\n", 394 scan_notif->last_schedule_line, 395 scan_notif->last_schedule_iteration, 396 __le32_to_cpu(scan_notif->time_after_last_iter)); 397 398 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 399 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 400 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 401 aborted ? "aborted" : "completed", 402 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 403 404 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 405 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 406 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 407 408 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 409 aborted ? "aborted" : "completed", 410 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 411 IWL_DEBUG_SCAN(mvm, 412 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 413 scan_notif->last_schedule_line, 414 scan_notif->last_schedule_iteration, 415 __le32_to_cpu(scan_notif->time_after_last_iter)); 416 417 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 418 ieee80211_sched_scan_stopped(mvm->hw); 419 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 420 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 421 struct cfg80211_scan_info info = { 422 .aborted = aborted, 423 }; 424 425 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 426 aborted ? "aborted" : "completed", 427 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 428 429 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 430 ieee80211_scan_completed(mvm->hw, &info); 431 cancel_delayed_work(&mvm->scan_timeout_dwork); 432 iwl_mvm_resume_tcm(mvm); 433 } else { 434 IWL_ERR(mvm, 435 "got scan complete notification but no scan is running\n"); 436 } 437 438 mvm->last_ebs_successful = 439 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 440 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 441 } 442 443 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 444 { 445 int i; 446 447 for (i = 0; i < PROBE_OPTION_MAX; i++) { 448 if (!ssid_list[i].len) 449 break; 450 if (ssid_list[i].len == ssid_len && 451 !memcmp(ssid_list->ssid, ssid, ssid_len)) 452 return i; 453 } 454 return -1; 455 } 456 457 /* We insert the SSIDs in an inverted order, because the FW will 458 * invert it back. 459 */ 460 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 461 struct iwl_ssid_ie *ssids, 462 u32 *ssid_bitmap) 463 { 464 int i, j; 465 int index; 466 u32 tmp_bitmap = 0; 467 468 /* 469 * copy SSIDs from match list. 470 * iwl_config_sched_scan_profiles() uses the order of these ssids to 471 * config match list. 472 */ 473 for (i = 0, j = params->n_match_sets - 1; 474 j >= 0 && i < PROBE_OPTION_MAX; 475 i++, j--) { 476 /* skip empty SSID matchsets */ 477 if (!params->match_sets[j].ssid.ssid_len) 478 continue; 479 ssids[i].id = WLAN_EID_SSID; 480 ssids[i].len = params->match_sets[j].ssid.ssid_len; 481 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 482 ssids[i].len); 483 } 484 485 /* add SSIDs from scan SSID list */ 486 for (j = params->n_ssids - 1; 487 j >= 0 && i < PROBE_OPTION_MAX; 488 i++, j--) { 489 index = iwl_ssid_exist(params->ssids[j].ssid, 490 params->ssids[j].ssid_len, 491 ssids); 492 if (index < 0) { 493 ssids[i].id = WLAN_EID_SSID; 494 ssids[i].len = params->ssids[j].ssid_len; 495 memcpy(ssids[i].ssid, params->ssids[j].ssid, 496 ssids[i].len); 497 tmp_bitmap |= BIT(i); 498 } else { 499 tmp_bitmap |= BIT(index); 500 } 501 } 502 if (ssid_bitmap) 503 *ssid_bitmap = tmp_bitmap; 504 } 505 506 static int 507 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 508 struct cfg80211_sched_scan_request *req) 509 { 510 struct iwl_scan_offload_profile *profile; 511 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 512 struct iwl_scan_offload_blocklist *blocklist; 513 struct iwl_scan_offload_profile_cfg_data *data; 514 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 515 int profile_cfg_size = sizeof(*data) + 516 sizeof(*profile) * max_profiles; 517 struct iwl_host_cmd cmd = { 518 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 519 .len[1] = profile_cfg_size, 520 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 521 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 522 }; 523 int blocklist_len; 524 int i; 525 int ret; 526 527 if (WARN_ON(req->n_match_sets > max_profiles)) 528 return -EIO; 529 530 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 531 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 532 else 533 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 534 535 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 536 if (!blocklist) 537 return -ENOMEM; 538 539 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 540 if (!profile_cfg_v1) { 541 ret = -ENOMEM; 542 goto free_blocklist; 543 } 544 545 cmd.data[0] = blocklist; 546 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 547 cmd.data[1] = profile_cfg_v1; 548 549 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 550 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 551 struct iwl_scan_offload_profile_cfg *profile_cfg = 552 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 553 554 data = &profile_cfg->data; 555 } else { 556 data = &profile_cfg_v1->data; 557 } 558 559 /* No blocklist configuration */ 560 data->num_profiles = req->n_match_sets; 561 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 562 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 563 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 564 565 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 566 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 567 568 for (i = 0; i < req->n_match_sets; i++) { 569 profile = &profile_cfg_v1->profiles[i]; 570 profile->ssid_index = i; 571 /* Support any cipher and auth algorithm */ 572 profile->unicast_cipher = 0xff; 573 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 574 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 575 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 576 profile->network_type = IWL_NETWORK_TYPE_ANY; 577 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 578 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 579 } 580 581 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 582 583 ret = iwl_mvm_send_cmd(mvm, &cmd); 584 kfree(profile_cfg_v1); 585 free_blocklist: 586 kfree(blocklist); 587 588 return ret; 589 } 590 591 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 592 struct cfg80211_sched_scan_request *req) 593 { 594 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 595 IWL_DEBUG_SCAN(mvm, 596 "Sending scheduled scan with filtering, n_match_sets %d\n", 597 req->n_match_sets); 598 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 599 return false; 600 } 601 602 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 603 604 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 605 return true; 606 } 607 608 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 609 { 610 int ret; 611 struct iwl_host_cmd cmd = { 612 .id = SCAN_OFFLOAD_ABORT_CMD, 613 }; 614 u32 status = CAN_ABORT_STATUS; 615 616 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 617 if (ret) 618 return ret; 619 620 if (status != CAN_ABORT_STATUS) { 621 /* 622 * The scan abort will return 1 for success or 623 * 2 for "failure". A failure condition can be 624 * due to simply not being in an active scan which 625 * can occur if we send the scan abort before the 626 * microcode has notified us that a scan is completed. 627 */ 628 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 629 ret = -ENOENT; 630 } 631 632 return ret; 633 } 634 635 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 636 struct iwl_scan_req_tx_cmd *tx_cmd, 637 bool no_cck) 638 { 639 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 640 TX_CMD_FLG_BT_DIS); 641 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 642 NL80211_BAND_2GHZ, 643 no_cck); 644 645 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 646 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 647 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 648 649 /* 650 * Fw doesn't use this sta anymore, pending deprecation via HOST API 651 * change 652 */ 653 } else { 654 tx_cmd[0].sta_id = 0xff; 655 tx_cmd[1].sta_id = 0xff; 656 } 657 658 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 659 TX_CMD_FLG_BT_DIS); 660 661 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 662 NL80211_BAND_5GHZ, 663 no_cck); 664 } 665 666 static void 667 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 668 struct ieee80211_channel **channels, 669 int n_channels, u32 ssid_bitmap, 670 struct iwl_scan_req_lmac *cmd) 671 { 672 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 673 int i; 674 675 for (i = 0; i < n_channels; i++) { 676 channel_cfg[i].channel_num = 677 cpu_to_le16(channels[i]->hw_value); 678 channel_cfg[i].iter_count = cpu_to_le16(1); 679 channel_cfg[i].iter_interval = 0; 680 channel_cfg[i].flags = 681 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 682 ssid_bitmap); 683 } 684 } 685 686 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 687 size_t len, u8 *const pos) 688 { 689 static const u8 before_ds_params[] = { 690 WLAN_EID_SSID, 691 WLAN_EID_SUPP_RATES, 692 WLAN_EID_REQUEST, 693 WLAN_EID_EXT_SUPP_RATES, 694 }; 695 size_t offs; 696 u8 *newpos = pos; 697 698 if (!iwl_mvm_rrm_scan_needed(mvm)) { 699 memcpy(newpos, ies, len); 700 return newpos + len; 701 } 702 703 offs = ieee80211_ie_split(ies, len, 704 before_ds_params, 705 ARRAY_SIZE(before_ds_params), 706 0); 707 708 memcpy(newpos, ies, offs); 709 newpos += offs; 710 711 /* Add a placeholder for DS Parameter Set element */ 712 *newpos++ = WLAN_EID_DS_PARAMS; 713 *newpos++ = 1; 714 *newpos++ = 0; 715 716 memcpy(newpos, ies + offs, len - offs); 717 newpos += len - offs; 718 719 return newpos; 720 } 721 722 #define WFA_TPC_IE_LEN 9 723 724 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 725 { 726 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 727 pos[1] = WFA_TPC_IE_LEN - 2; 728 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 729 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 730 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 731 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 732 pos[6] = 0; 733 /* pos[7] - tx power will be inserted by the FW */ 734 pos[7] = 0; 735 pos[8] = 0; 736 } 737 738 static void 739 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 740 struct ieee80211_scan_ies *ies, 741 struct iwl_mvm_scan_params *params) 742 { 743 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 744 u8 *pos, *newpos; 745 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 746 params->mac_addr : NULL; 747 748 /* 749 * Unfortunately, right now the offload scan doesn't support randomising 750 * within the firmware, so until the firmware API is ready we implement 751 * it in the driver. This means that the scan iterations won't really be 752 * random, only when it's restarted, but at least that helps a bit. 753 */ 754 if (mac_addr) 755 get_random_mask_addr(frame->sa, mac_addr, 756 params->mac_addr_mask); 757 else 758 memcpy(frame->sa, vif->addr, ETH_ALEN); 759 760 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 761 eth_broadcast_addr(frame->da); 762 eth_broadcast_addr(frame->bssid); 763 frame->seq_ctrl = 0; 764 765 pos = frame->u.probe_req.variable; 766 *pos++ = WLAN_EID_SSID; 767 *pos++ = 0; 768 769 params->preq.mac_header.offset = 0; 770 params->preq.mac_header.len = cpu_to_le16(24 + 2); 771 772 /* Insert ds parameter set element on 2.4 GHz band */ 773 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 774 ies->ies[NL80211_BAND_2GHZ], 775 ies->len[NL80211_BAND_2GHZ], 776 pos); 777 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 778 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 779 pos = newpos; 780 781 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 782 ies->len[NL80211_BAND_5GHZ]); 783 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 784 params->preq.band_data[1].len = 785 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 786 pos += ies->len[NL80211_BAND_5GHZ]; 787 788 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 789 ies->len[NL80211_BAND_6GHZ]); 790 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 791 params->preq.band_data[2].len = 792 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 793 pos += ies->len[NL80211_BAND_6GHZ]; 794 memcpy(pos, ies->common_ies, ies->common_ie_len); 795 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 796 797 if (iwl_mvm_rrm_scan_needed(mvm) && 798 !fw_has_capa(&mvm->fw->ucode_capa, 799 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 800 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 801 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 802 WFA_TPC_IE_LEN); 803 } else { 804 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 805 } 806 } 807 808 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 809 struct iwl_scan_req_lmac *cmd, 810 struct iwl_mvm_scan_params *params) 811 { 812 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 813 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 814 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 815 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 816 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 817 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 818 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 819 } 820 821 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 822 struct ieee80211_scan_ies *ies, 823 int n_channels) 824 { 825 return ((n_ssids <= PROBE_OPTION_MAX) && 826 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 827 (ies->common_ie_len + 828 ies->len[NL80211_BAND_2GHZ] + 829 ies->len[NL80211_BAND_5GHZ] <= 830 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 831 } 832 833 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 834 struct ieee80211_vif *vif) 835 { 836 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 837 bool low_latency; 838 839 if (iwl_mvm_is_cdb_supported(mvm)) 840 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 841 else 842 low_latency = iwl_mvm_low_latency(mvm); 843 844 /* We can only use EBS if: 845 * 1. the feature is supported; 846 * 2. the last EBS was successful; 847 * 3. if only single scan, the single scan EBS API is supported; 848 * 4. it's not a p2p find operation. 849 * 5. we are not in low latency mode, 850 * or if fragmented ebs is supported by the FW 851 */ 852 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 853 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 854 vif->type != NL80211_IFTYPE_P2P_DEVICE && 855 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 856 } 857 858 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 859 { 860 return params->n_scan_plans == 1 && 861 params->scan_plans[0].iterations == 1; 862 } 863 864 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 865 { 866 return (type == IWL_SCAN_TYPE_FRAGMENTED || 867 type == IWL_SCAN_TYPE_FAST_BALANCE); 868 } 869 870 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 871 struct iwl_mvm_scan_params *params, 872 struct ieee80211_vif *vif) 873 { 874 int flags = 0; 875 876 if (params->n_ssids == 0) 877 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 878 879 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 880 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 881 882 if (iwl_mvm_is_scan_fragmented(params->type)) 883 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 884 885 if (iwl_mvm_rrm_scan_needed(mvm) && 886 fw_has_capa(&mvm->fw->ucode_capa, 887 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 888 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 889 890 if (params->pass_all) 891 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 892 else 893 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 894 895 #ifdef CONFIG_IWLWIFI_DEBUGFS 896 if (mvm->scan_iter_notif_enabled) 897 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 898 #endif 899 900 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 901 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 902 903 if (iwl_mvm_is_regular_scan(params) && 904 vif->type != NL80211_IFTYPE_P2P_DEVICE && 905 !iwl_mvm_is_scan_fragmented(params->type)) 906 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 907 908 return flags; 909 } 910 911 static void 912 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 913 struct iwl_scan_probe_req *src_p_req) 914 { 915 int i; 916 917 p_req->mac_header = src_p_req->mac_header; 918 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 919 p_req->band_data[i] = src_p_req->band_data[i]; 920 p_req->common_data = src_p_req->common_data; 921 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 922 } 923 924 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 925 struct iwl_mvm_scan_params *params) 926 { 927 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 928 struct iwl_scan_probe_req_v1 *preq = 929 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 930 mvm->fw->ucode_capa.n_scan_channels); 931 u32 ssid_bitmap = 0; 932 int i; 933 u8 band; 934 935 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 936 return -EINVAL; 937 938 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 939 940 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 941 cmd->iter_num = cpu_to_le32(1); 942 cmd->n_channels = (u8)params->n_channels; 943 944 cmd->delay = cpu_to_le32(params->delay); 945 946 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 947 vif)); 948 949 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 950 cmd->flags = cpu_to_le32(band); 951 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 952 MAC_FILTER_IN_BEACON); 953 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 954 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 955 956 /* this API uses bits 1-20 instead of 0-19 */ 957 ssid_bitmap <<= 1; 958 959 for (i = 0; i < params->n_scan_plans; i++) { 960 struct cfg80211_sched_scan_plan *scan_plan = 961 ¶ms->scan_plans[i]; 962 963 cmd->schedule[i].delay = 964 cpu_to_le16(scan_plan->interval); 965 cmd->schedule[i].iterations = scan_plan->iterations; 966 cmd->schedule[i].full_scan_mul = 1; 967 } 968 969 /* 970 * If the number of iterations of the last scan plan is set to 971 * zero, it should run infinitely. However, this is not always the case. 972 * For example, when regular scan is requested the driver sets one scan 973 * plan with one iteration. 974 */ 975 if (!cmd->schedule[i - 1].iterations) 976 cmd->schedule[i - 1].iterations = 0xff; 977 978 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 979 cmd->channel_opt[0].flags = 980 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 981 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 982 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 983 cmd->channel_opt[0].non_ebs_ratio = 984 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 985 cmd->channel_opt[1].flags = 986 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 987 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 988 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 989 cmd->channel_opt[1].non_ebs_ratio = 990 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 991 } 992 993 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 994 params->n_channels, ssid_bitmap, cmd); 995 996 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 997 998 return 0; 999 } 1000 1001 static int rate_to_scan_rate_flag(unsigned int rate) 1002 { 1003 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1004 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1005 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1006 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1007 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1008 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1009 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1010 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1011 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1012 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1013 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1014 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1015 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1016 }; 1017 1018 return rate_to_scan_rate[rate]; 1019 } 1020 1021 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1022 { 1023 struct ieee80211_supported_band *band; 1024 unsigned int rates = 0; 1025 int i; 1026 1027 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1028 for (i = 0; i < band->n_bitrates; i++) 1029 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1030 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1031 for (i = 0; i < band->n_bitrates; i++) 1032 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1033 1034 /* Set both basic rates and supported rates */ 1035 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1036 1037 return cpu_to_le32(rates); 1038 } 1039 1040 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1041 struct iwl_scan_dwell *dwell) 1042 { 1043 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1044 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1045 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1046 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1047 } 1048 1049 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1050 u32 max_channels) 1051 { 1052 struct ieee80211_supported_band *band; 1053 int i, j = 0; 1054 1055 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1056 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1057 channels[j] = band->channels[i].hw_value; 1058 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1059 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1060 channels[j] = band->channels[i].hw_value; 1061 } 1062 1063 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1064 u32 flags, u8 channel_flags, 1065 u32 max_channels) 1066 { 1067 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1068 struct iwl_scan_config_v1 *cfg = config; 1069 1070 cfg->flags = cpu_to_le32(flags); 1071 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1072 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1073 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1074 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1075 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1076 1077 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1078 1079 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1080 1081 /* This function should not be called when using ADD_STA ver >=12 */ 1082 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1083 1084 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1085 cfg->channel_flags = channel_flags; 1086 1087 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1088 } 1089 1090 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1091 u32 flags, u8 channel_flags, 1092 u32 max_channels) 1093 { 1094 struct iwl_scan_config_v2 *cfg = config; 1095 1096 cfg->flags = cpu_to_le32(flags); 1097 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1098 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1099 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1100 1101 if (iwl_mvm_is_cdb_supported(mvm)) { 1102 enum iwl_mvm_scan_type lb_type, hb_type; 1103 1104 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1105 NL80211_BAND_2GHZ); 1106 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1107 NL80211_BAND_5GHZ); 1108 1109 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1110 cpu_to_le32(scan_timing[lb_type].max_out_time); 1111 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1112 cpu_to_le32(scan_timing[lb_type].suspend_time); 1113 1114 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1115 cpu_to_le32(scan_timing[hb_type].max_out_time); 1116 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1117 cpu_to_le32(scan_timing[hb_type].suspend_time); 1118 } else { 1119 enum iwl_mvm_scan_type type = 1120 iwl_mvm_get_scan_type(mvm, NULL); 1121 1122 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1123 cpu_to_le32(scan_timing[type].max_out_time); 1124 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1125 cpu_to_le32(scan_timing[type].suspend_time); 1126 } 1127 1128 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1129 1130 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1131 1132 /* This function should not be called when using ADD_STA ver >=12 */ 1133 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1134 1135 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1136 cfg->channel_flags = channel_flags; 1137 1138 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1139 } 1140 1141 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1142 { 1143 void *cfg; 1144 int ret, cmd_size; 1145 struct iwl_host_cmd cmd = { 1146 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1147 }; 1148 enum iwl_mvm_scan_type type; 1149 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1150 int num_channels = 1151 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1152 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1153 u32 flags; 1154 u8 channel_flags; 1155 1156 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1157 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1158 1159 if (iwl_mvm_is_cdb_supported(mvm)) { 1160 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1161 NL80211_BAND_2GHZ); 1162 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1163 NL80211_BAND_5GHZ); 1164 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1165 return 0; 1166 } else { 1167 type = iwl_mvm_get_scan_type(mvm, NULL); 1168 if (type == mvm->scan_type) 1169 return 0; 1170 } 1171 1172 if (iwl_mvm_cdb_scan_api(mvm)) 1173 cmd_size = sizeof(struct iwl_scan_config_v2); 1174 else 1175 cmd_size = sizeof(struct iwl_scan_config_v1); 1176 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1177 1178 cfg = kzalloc(cmd_size, GFP_KERNEL); 1179 if (!cfg) 1180 return -ENOMEM; 1181 1182 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1183 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1184 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1185 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1186 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1187 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1188 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1189 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1190 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1191 SCAN_CONFIG_N_CHANNELS(num_channels) | 1192 (iwl_mvm_is_scan_fragmented(type) ? 1193 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1194 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1195 1196 channel_flags = IWL_CHANNEL_FLAG_EBS | 1197 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1198 IWL_CHANNEL_FLAG_EBS_ADD | 1199 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1200 1201 /* 1202 * Check for fragmented scan on LMAC2 - high band. 1203 * LMAC1 - low band is checked above. 1204 */ 1205 if (iwl_mvm_cdb_scan_api(mvm)) { 1206 if (iwl_mvm_is_cdb_supported(mvm)) 1207 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1208 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1209 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1210 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1211 num_channels); 1212 } else { 1213 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1214 num_channels); 1215 } 1216 1217 cmd.data[0] = cfg; 1218 cmd.len[0] = cmd_size; 1219 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1220 1221 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1222 1223 ret = iwl_mvm_send_cmd(mvm, &cmd); 1224 if (!ret) { 1225 mvm->scan_type = type; 1226 mvm->hb_scan_type = hb_type; 1227 } 1228 1229 kfree(cfg); 1230 return ret; 1231 } 1232 1233 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1234 { 1235 struct iwl_scan_config cfg; 1236 struct iwl_host_cmd cmd = { 1237 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1238 .len[0] = sizeof(cfg), 1239 .data[0] = &cfg, 1240 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1241 }; 1242 1243 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1244 return iwl_mvm_legacy_config_scan(mvm); 1245 1246 memset(&cfg, 0, sizeof(cfg)); 1247 1248 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 1249 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1250 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1251 /* 1252 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1253 * version 5. 1254 */ 1255 cfg.bcast_sta_id = 0xff; 1256 } 1257 1258 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1259 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1260 1261 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1262 1263 return iwl_mvm_send_cmd(mvm, &cmd); 1264 } 1265 1266 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1267 { 1268 int i; 1269 1270 for (i = 0; i < mvm->max_scans; i++) 1271 if (mvm->scan_uid_status[i] == status) 1272 return i; 1273 1274 return -ENOENT; 1275 } 1276 1277 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1278 struct iwl_scan_req_umac *cmd, 1279 struct iwl_mvm_scan_params *params) 1280 { 1281 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1282 u8 active_dwell, passive_dwell; 1283 1284 timing = &scan_timing[params->type]; 1285 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1286 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1287 1288 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1289 cmd->v7.adwell_default_n_aps_social = 1290 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1291 cmd->v7.adwell_default_n_aps = 1292 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1293 1294 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1295 cmd->v9.adwell_default_hb_n_aps = 1296 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1297 1298 /* if custom max budget was configured with debugfs */ 1299 if (IWL_MVM_ADWELL_MAX_BUDGET) 1300 cmd->v7.adwell_max_budget = 1301 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1302 else if (params->ssids && params->ssids[0].ssid_len) 1303 cmd->v7.adwell_max_budget = 1304 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1305 else 1306 cmd->v7.adwell_max_budget = 1307 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1308 1309 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1310 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1311 cpu_to_le32(timing->max_out_time); 1312 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1313 cpu_to_le32(timing->suspend_time); 1314 1315 if (iwl_mvm_is_cdb_supported(mvm)) { 1316 hb_timing = &scan_timing[params->hb_type]; 1317 1318 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1319 cpu_to_le32(hb_timing->max_out_time); 1320 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1321 cpu_to_le32(hb_timing->suspend_time); 1322 } 1323 1324 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1325 cmd->v7.active_dwell = active_dwell; 1326 cmd->v7.passive_dwell = passive_dwell; 1327 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1328 } else { 1329 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1330 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1331 if (iwl_mvm_is_cdb_supported(mvm)) { 1332 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1333 active_dwell; 1334 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1335 passive_dwell; 1336 } 1337 } 1338 } else { 1339 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1340 cmd->v1.active_dwell = active_dwell; 1341 cmd->v1.passive_dwell = passive_dwell; 1342 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1343 1344 if (iwl_mvm_is_cdb_supported(mvm)) { 1345 hb_timing = &scan_timing[params->hb_type]; 1346 1347 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1348 cpu_to_le32(hb_timing->max_out_time); 1349 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1350 cpu_to_le32(hb_timing->suspend_time); 1351 } 1352 1353 if (iwl_mvm_cdb_scan_api(mvm)) { 1354 cmd->v6.scan_priority = 1355 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1356 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1357 cpu_to_le32(timing->max_out_time); 1358 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1359 cpu_to_le32(timing->suspend_time); 1360 } else { 1361 cmd->v1.scan_priority = 1362 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1363 cmd->v1.max_out_time = 1364 cpu_to_le32(timing->max_out_time); 1365 cmd->v1.suspend_time = 1366 cpu_to_le32(timing->suspend_time); 1367 } 1368 } 1369 1370 if (iwl_mvm_is_regular_scan(params)) 1371 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1372 else 1373 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1374 } 1375 1376 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1377 { 1378 return iwl_mvm_is_regular_scan(params) ? 1379 IWL_SCAN_PRIORITY_EXT_6 : 1380 IWL_SCAN_PRIORITY_EXT_2; 1381 } 1382 1383 static void 1384 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1385 struct iwl_scan_general_params_v11 *general_params, 1386 struct iwl_mvm_scan_params *params) 1387 { 1388 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1389 u8 active_dwell, passive_dwell; 1390 1391 timing = &scan_timing[params->type]; 1392 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1393 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1394 1395 general_params->adwell_default_social_chn = 1396 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1397 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1398 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1399 1400 /* if custom max budget was configured with debugfs */ 1401 if (IWL_MVM_ADWELL_MAX_BUDGET) 1402 general_params->adwell_max_budget = 1403 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1404 else if (params->ssids && params->ssids[0].ssid_len) 1405 general_params->adwell_max_budget = 1406 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1407 else 1408 general_params->adwell_max_budget = 1409 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1410 1411 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1412 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1413 cpu_to_le32(timing->max_out_time); 1414 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1415 cpu_to_le32(timing->suspend_time); 1416 1417 hb_timing = &scan_timing[params->hb_type]; 1418 1419 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1420 cpu_to_le32(hb_timing->max_out_time); 1421 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1422 cpu_to_le32(hb_timing->suspend_time); 1423 1424 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1425 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1426 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1427 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1428 } 1429 1430 struct iwl_mvm_scan_channel_segment { 1431 u8 start_idx; 1432 u8 end_idx; 1433 u8 first_channel_id; 1434 u8 last_channel_id; 1435 u8 channel_spacing_shift; 1436 u8 band; 1437 }; 1438 1439 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1440 { 1441 .start_idx = 0, 1442 .end_idx = 13, 1443 .first_channel_id = 1, 1444 .last_channel_id = 14, 1445 .channel_spacing_shift = 0, 1446 .band = PHY_BAND_24 1447 }, 1448 { 1449 .start_idx = 14, 1450 .end_idx = 41, 1451 .first_channel_id = 36, 1452 .last_channel_id = 144, 1453 .channel_spacing_shift = 2, 1454 .band = PHY_BAND_5 1455 }, 1456 { 1457 .start_idx = 42, 1458 .end_idx = 50, 1459 .first_channel_id = 149, 1460 .last_channel_id = 181, 1461 .channel_spacing_shift = 2, 1462 .band = PHY_BAND_5 1463 }, 1464 { 1465 .start_idx = 51, 1466 .end_idx = 111, 1467 .first_channel_id = 1, 1468 .last_channel_id = 241, 1469 .channel_spacing_shift = 2, 1470 .band = PHY_BAND_6 1471 }, 1472 }; 1473 1474 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1475 { 1476 int i, index; 1477 1478 if (!channel_id) 1479 return -EINVAL; 1480 1481 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1482 const struct iwl_mvm_scan_channel_segment *ch_segment = 1483 &scan_channel_segments[i]; 1484 u32 ch_offset; 1485 1486 if (ch_segment->band != band || 1487 ch_segment->first_channel_id > channel_id || 1488 ch_segment->last_channel_id < channel_id) 1489 continue; 1490 1491 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1492 ch_segment->channel_spacing_shift; 1493 1494 index = scan_channel_segments[i].start_idx + ch_offset; 1495 if (index < IWL_SCAN_NUM_CHANNELS) 1496 return index; 1497 1498 break; 1499 } 1500 1501 return -EINVAL; 1502 } 1503 1504 static const u8 p2p_go_friendly_chs[] = { 1505 36, 40, 44, 48, 149, 153, 157, 161, 165, 1506 }; 1507 1508 static const u8 social_chs[] = { 1509 1, 6, 11 1510 }; 1511 1512 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1513 u8 ch_id, u8 band, u8 *ch_bitmap, 1514 size_t bitmap_n_entries) 1515 { 1516 int i; 1517 1518 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1519 return; 1520 1521 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1522 if (p2p_go_friendly_chs[i] == ch_id) { 1523 int ch_idx, bitmap_idx; 1524 1525 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1526 if (ch_idx < 0) 1527 return; 1528 1529 bitmap_idx = ch_idx / 8; 1530 if (bitmap_idx >= bitmap_n_entries) 1531 return; 1532 1533 ch_idx = ch_idx % 8; 1534 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1535 1536 return; 1537 } 1538 } 1539 } 1540 1541 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1542 { 1543 int i; 1544 u32 flags = 0; 1545 1546 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1547 goto out; 1548 1549 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1550 if (p2p_go_friendly_chs[i] == ch_id) { 1551 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1552 break; 1553 } 1554 } 1555 1556 if (flags) 1557 goto out; 1558 1559 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1560 if (social_chs[i] == ch_id) { 1561 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1562 break; 1563 } 1564 } 1565 1566 out: 1567 return flags; 1568 } 1569 1570 static void 1571 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1572 struct ieee80211_channel **channels, 1573 int n_channels, u32 flags, 1574 struct iwl_scan_channel_cfg_umac *channel_cfg) 1575 { 1576 int i; 1577 1578 for (i = 0; i < n_channels; i++) { 1579 channel_cfg[i].flags = cpu_to_le32(flags); 1580 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1581 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1582 enum nl80211_band band = channels[i]->band; 1583 1584 channel_cfg[i].v2.band = 1585 iwl_mvm_phy_band_from_nl80211(band); 1586 channel_cfg[i].v2.iter_count = 1; 1587 channel_cfg[i].v2.iter_interval = 0; 1588 } else { 1589 channel_cfg[i].v1.iter_count = 1; 1590 channel_cfg[i].v1.iter_interval = 0; 1591 } 1592 } 1593 } 1594 1595 static void 1596 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1597 struct ieee80211_channel **channels, 1598 struct iwl_scan_channel_params_v4 *cp, 1599 int n_channels, u32 flags, 1600 enum nl80211_iftype vif_type) 1601 { 1602 u8 *bitmap = cp->adwell_ch_override_bitmap; 1603 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1604 int i; 1605 1606 for (i = 0; i < n_channels; i++) { 1607 enum nl80211_band band = channels[i]->band; 1608 struct iwl_scan_channel_cfg_umac *cfg = 1609 &cp->channel_config[i]; 1610 1611 cfg->flags = cpu_to_le32(flags); 1612 cfg->v2.channel_num = channels[i]->hw_value; 1613 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1614 cfg->v2.iter_count = 1; 1615 cfg->v2.iter_interval = 0; 1616 1617 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1618 cfg->v2.channel_num, 1619 cfg->v2.band, bitmap, 1620 bitmap_n_entries); 1621 } 1622 } 1623 1624 static void 1625 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1626 struct ieee80211_channel **channels, 1627 struct iwl_scan_channel_params_v6 *cp, 1628 int n_channels, u32 flags, 1629 enum nl80211_iftype vif_type) 1630 { 1631 int i; 1632 1633 for (i = 0; i < n_channels; i++) { 1634 enum nl80211_band band = channels[i]->band; 1635 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1636 u32 n_aps_flag = 1637 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1638 channels[i]->hw_value); 1639 1640 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1641 cfg->v2.channel_num = channels[i]->hw_value; 1642 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1643 if (cfg80211_channel_is_psc(channels[i])) 1644 cfg->flags = 0; 1645 cfg->v2.iter_count = 1; 1646 cfg->v2.iter_interval = 0; 1647 } 1648 } 1649 1650 static void 1651 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1652 struct iwl_mvm_scan_params *params, 1653 struct iwl_scan_probe_params_v4 *pp) 1654 { 1655 int j, idex_s = 0, idex_b = 0; 1656 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1657 params->scan_6ghz_params; 1658 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1659 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1660 1661 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1662 j++) { 1663 if (!params->ssids[j].ssid_len) 1664 continue; 1665 1666 pp->short_ssid[idex_s] = 1667 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1668 params->ssids[j].ssid_len)); 1669 1670 if (hidden_supported) { 1671 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1672 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1673 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1674 params->ssids[j].ssid_len); 1675 } 1676 idex_s++; 1677 } 1678 1679 /* 1680 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1681 * collocated parameters. This might not be optimal, as this processing 1682 * does not (yet) correspond to the actual channels, so it is possible 1683 * that some entries would be left out. 1684 * 1685 * TODO: improve this logic. 1686 */ 1687 for (j = 0; j < params->n_6ghz_params; j++) { 1688 int k; 1689 1690 /* First, try to place the short SSID */ 1691 if (scan_6ghz_params[j].short_ssid_valid) { 1692 for (k = 0; k < idex_s; k++) { 1693 if (pp->short_ssid[k] == 1694 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1695 break; 1696 } 1697 1698 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1699 pp->short_ssid[idex_s++] = 1700 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1701 } 1702 } 1703 1704 /* try to place BSSID for the same entry */ 1705 for (k = 0; k < idex_b; k++) { 1706 if (!memcmp(&pp->bssid_array[k], 1707 scan_6ghz_params[j].bssid, ETH_ALEN)) 1708 break; 1709 } 1710 1711 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1712 memcpy(&pp->bssid_array[idex_b++], 1713 scan_6ghz_params[j].bssid, ETH_ALEN); 1714 } 1715 } 1716 1717 pp->short_ssid_num = idex_s; 1718 pp->bssid_num = idex_b; 1719 } 1720 1721 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1722 static u32 1723 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm *mvm, 1724 struct iwl_mvm_scan_params *params, 1725 u32 n_channels, 1726 struct iwl_scan_probe_params_v4 *pp, 1727 struct iwl_scan_channel_params_v6 *cp, 1728 enum nl80211_iftype vif_type) 1729 { 1730 int i; 1731 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1732 params->scan_6ghz_params; 1733 u32 ch_cnt; 1734 1735 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1736 struct iwl_scan_channel_cfg_umac *cfg = 1737 &cp->channel_config[ch_cnt]; 1738 1739 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1740 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1741 bool force_passive, found = false, allow_passive = true, 1742 unsolicited_probe_on_chan = false, psc_no_listen = false; 1743 1744 /* 1745 * Avoid performing passive scan on non PSC channels unless the 1746 * scan is specifically a passive scan, i.e., no SSIDs 1747 * configured in the scan command. 1748 */ 1749 if (!cfg80211_channel_is_psc(params->channels[i]) && 1750 !params->n_6ghz_params && params->n_ssids) 1751 continue; 1752 1753 cfg->v1.channel_num = params->channels[i]->hw_value; 1754 cfg->v2.band = 2; 1755 cfg->v2.iter_count = 1; 1756 cfg->v2.iter_interval = 0; 1757 1758 /* 1759 * The optimize the scan time, i.e., reduce the scan dwell time 1760 * on each channel, the below logic tries to set 3 direct BSSID 1761 * probe requests for each broadcast probe request with a short 1762 * SSID. 1763 * TODO: improve this logic 1764 */ 1765 n_used_bssid_entries = 3; 1766 for (j = 0; j < params->n_6ghz_params; j++) { 1767 if (!(scan_6ghz_params[j].channel_idx == i)) 1768 continue; 1769 1770 found = false; 1771 unsolicited_probe_on_chan |= 1772 scan_6ghz_params[j].unsolicited_probe; 1773 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1774 1775 for (k = 0; k < pp->short_ssid_num; k++) { 1776 if (!scan_6ghz_params[j].unsolicited_probe && 1777 le32_to_cpu(pp->short_ssid[k]) == 1778 scan_6ghz_params[j].short_ssid) { 1779 /* Relevant short SSID bit set */ 1780 if (s_ssid_bitmap & BIT(k)) { 1781 found = true; 1782 break; 1783 } 1784 1785 /* 1786 * Use short SSID only to create a new 1787 * iteration during channel dwell or in 1788 * case that the short SSID has a 1789 * matching SSID, i.e., scan for hidden 1790 * APs. 1791 */ 1792 if (n_used_bssid_entries >= 3) { 1793 s_ssid_bitmap |= BIT(k); 1794 s_max++; 1795 n_used_bssid_entries -= 3; 1796 found = true; 1797 break; 1798 } else if (pp->direct_scan[k].len) { 1799 s_ssid_bitmap |= BIT(k); 1800 s_max++; 1801 found = true; 1802 allow_passive = false; 1803 break; 1804 } 1805 } 1806 } 1807 1808 if (found) 1809 continue; 1810 1811 for (k = 0; k < pp->bssid_num; k++) { 1812 if (!memcmp(&pp->bssid_array[k], 1813 scan_6ghz_params[j].bssid, 1814 ETH_ALEN)) { 1815 if (!(bssid_bitmap & BIT(k))) { 1816 bssid_bitmap |= BIT(k); 1817 b_max++; 1818 n_used_bssid_entries++; 1819 } 1820 break; 1821 } 1822 } 1823 } 1824 1825 if (cfg80211_channel_is_psc(params->channels[i]) && 1826 psc_no_listen) 1827 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1828 1829 if (unsolicited_probe_on_chan) 1830 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1831 1832 /* 1833 * In the following cases apply passive scan: 1834 * 1. Non fragmented scan: 1835 * - PSC channel with NO_LISTEN_FLAG on should be treated 1836 * like non PSC channel 1837 * - Non PSC channel with more than 3 short SSIDs or more 1838 * than 9 BSSIDs. 1839 * - Non PSC Channel with unsolicited probe response and 1840 * more than 2 short SSIDs or more than 6 BSSIDs. 1841 * - PSC channel with more than 2 short SSIDs or more than 1842 * 6 BSSIDs. 1843 * 3. Fragmented scan: 1844 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1845 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1846 * - Non PSC channel with unsolicited probe response and 1847 * more than 1 SSID or more than 3 BSSIDs. 1848 */ 1849 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1850 if (!cfg80211_channel_is_psc(params->channels[i]) || 1851 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1852 force_passive = (s_max > 3 || b_max > 9); 1853 force_passive |= (unsolicited_probe_on_chan && 1854 (s_max > 2 || b_max > 6)); 1855 } else { 1856 force_passive = (s_max > 2 || b_max > 6); 1857 } 1858 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1859 force_passive = (s_max > 1 || b_max > 3); 1860 } else { 1861 force_passive = (s_max > 2 || b_max > 6); 1862 force_passive |= (unsolicited_probe_on_chan && 1863 (s_max > 1 || b_max > 3)); 1864 } 1865 if ((allow_passive && force_passive) || 1866 (!(bssid_bitmap | s_ssid_bitmap) && 1867 !cfg80211_channel_is_psc(params->channels[i]))) 1868 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1869 else 1870 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1871 1872 cfg->flags |= cpu_to_le32(flags); 1873 ch_cnt++; 1874 } 1875 1876 if (params->n_channels > ch_cnt) 1877 IWL_DEBUG_SCAN(mvm, 1878 "6GHz: reducing number channels: (%u->%u)\n", 1879 params->n_channels, ch_cnt); 1880 1881 return ch_cnt; 1882 } 1883 1884 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1885 struct iwl_mvm_scan_params *params, 1886 struct ieee80211_vif *vif) 1887 { 1888 u8 flags = 0; 1889 1890 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1891 1892 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1893 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1894 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1895 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1896 1897 /* set fragmented ebs for fragmented scan on HB channels */ 1898 if ((!iwl_mvm_is_cdb_supported(mvm) && 1899 iwl_mvm_is_scan_fragmented(params->type)) || 1900 (iwl_mvm_is_cdb_supported(mvm) && 1901 iwl_mvm_is_scan_fragmented(params->hb_type))) 1902 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1903 1904 /* 1905 * force EBS in case the scan is a fragmented and there is a need to take P2P 1906 * GO operation into consideration during scan operation. 1907 */ 1908 if ((!iwl_mvm_is_cdb_supported(mvm) && 1909 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1910 (iwl_mvm_is_cdb_supported(mvm) && 1911 iwl_mvm_is_scan_fragmented(params->hb_type) && 1912 params->respect_p2p_go_hb)) { 1913 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1914 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1915 } 1916 1917 return flags; 1918 } 1919 1920 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1921 struct iwl_mvm_scan_params *params, 1922 struct ieee80211_vif *vif) 1923 { 1924 struct ieee80211_supported_band *sband = 1925 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1926 u32 n_disabled, i; 1927 1928 params->enable_6ghz_passive = false; 1929 1930 if (params->scan_6ghz) 1931 return; 1932 1933 if (!fw_has_capa(&mvm->fw->ucode_capa, 1934 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 1935 IWL_DEBUG_SCAN(mvm, 1936 "6GHz passive scan: Not supported by FW\n"); 1937 return; 1938 } 1939 1940 /* 6GHz passive scan allowed only on station interface */ 1941 if (vif->type != NL80211_IFTYPE_STATION) { 1942 IWL_DEBUG_SCAN(mvm, 1943 "6GHz passive scan: not station interface\n"); 1944 return; 1945 } 1946 1947 /* 1948 * 6GHz passive scan is allowed in a defined time interval following HW 1949 * reset or resume flow, or while not associated and a large interval 1950 * has passed since the last 6GHz passive scan. 1951 */ 1952 if ((vif->cfg.assoc || 1953 time_after(mvm->last_6ghz_passive_scan_jiffies + 1954 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 1955 (time_before(mvm->last_reset_or_resume_time_jiffies + 1956 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 1957 jiffies))) { 1958 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 1959 vif->cfg.assoc ? "associated" : 1960 "timeout did not expire"); 1961 return; 1962 } 1963 1964 /* not enough channels in the regular scan request */ 1965 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 1966 IWL_DEBUG_SCAN(mvm, 1967 "6GHz passive scan: not enough channels\n"); 1968 return; 1969 } 1970 1971 for (i = 0; i < params->n_ssids; i++) { 1972 if (!params->ssids[i].ssid_len) 1973 break; 1974 } 1975 1976 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 1977 if (i == params->n_ssids) { 1978 IWL_DEBUG_SCAN(mvm, 1979 "6GHz passive scan: no wildcard SSID\n"); 1980 return; 1981 } 1982 1983 if (!sband || !sband->n_channels) { 1984 IWL_DEBUG_SCAN(mvm, 1985 "6GHz passive scan: no 6GHz channels\n"); 1986 return; 1987 } 1988 1989 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 1990 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 1991 n_disabled++; 1992 } 1993 1994 /* 1995 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 1996 * scan 1997 */ 1998 if (n_disabled != sband->n_channels) { 1999 IWL_DEBUG_SCAN(mvm, 2000 "6GHz passive scan: 6GHz channels enabled\n"); 2001 return; 2002 } 2003 2004 /* all conditions to enable 6ghz passive scan are satisfied */ 2005 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2006 params->enable_6ghz_passive = true; 2007 } 2008 2009 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2010 struct iwl_mvm_scan_params *params, 2011 struct ieee80211_vif *vif, 2012 int type) 2013 { 2014 u16 flags = 0; 2015 2016 /* 2017 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2018 * if there is a single SSID which is not the broadcast SSID, assume 2019 * that the scan is intended for roaming purposes and thus enable Rx on 2020 * all chains to improve chances of hearing the beacons/probe responses. 2021 */ 2022 if (params->n_ssids == 0) 2023 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2024 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2025 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2026 2027 if (iwl_mvm_is_scan_fragmented(params->type)) 2028 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2029 2030 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2031 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2032 2033 if (params->pass_all) 2034 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2035 else 2036 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2037 2038 if (!iwl_mvm_is_regular_scan(params)) 2039 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2040 2041 if (params->iter_notif || 2042 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2043 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2044 2045 if (IWL_MVM_ADWELL_ENABLE) 2046 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2047 2048 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2049 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2050 2051 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2052 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2053 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2054 2055 if (params->enable_6ghz_passive) 2056 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2057 2058 if (iwl_mvm_is_oce_supported(mvm) && 2059 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2060 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2061 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2062 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2063 2064 return flags; 2065 } 2066 2067 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2068 struct iwl_mvm_scan_params *params, 2069 struct ieee80211_vif *vif, int type) 2070 { 2071 u8 flags = 0; 2072 2073 if (iwl_mvm_is_cdb_supported(mvm)) { 2074 if (params->respect_p2p_go) 2075 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2076 if (params->respect_p2p_go_hb) 2077 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2078 } else { 2079 if (params->respect_p2p_go) 2080 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2081 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2082 } 2083 2084 return flags; 2085 } 2086 2087 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2088 struct iwl_mvm_scan_params *params, 2089 struct ieee80211_vif *vif) 2090 { 2091 u16 flags = 0; 2092 2093 if (params->n_ssids == 0) 2094 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2095 2096 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2097 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2098 2099 if (iwl_mvm_is_scan_fragmented(params->type)) 2100 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2101 2102 if (iwl_mvm_is_cdb_supported(mvm) && 2103 iwl_mvm_is_scan_fragmented(params->hb_type)) 2104 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2105 2106 if (iwl_mvm_rrm_scan_needed(mvm) && 2107 fw_has_capa(&mvm->fw->ucode_capa, 2108 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2109 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2110 2111 if (params->pass_all) 2112 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2113 else 2114 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2115 2116 if (!iwl_mvm_is_regular_scan(params)) 2117 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2118 2119 if (params->iter_notif) 2120 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2121 2122 #ifdef CONFIG_IWLWIFI_DEBUGFS 2123 if (mvm->scan_iter_notif_enabled) 2124 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2125 #endif 2126 2127 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2128 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2129 2130 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2131 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2132 2133 /* 2134 * Extended dwell is relevant only for low band to start with, as it is 2135 * being used for social channles only (1, 6, 11), so we can check 2136 * only scan type on low band also for CDB. 2137 */ 2138 if (iwl_mvm_is_regular_scan(params) && 2139 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2140 !iwl_mvm_is_scan_fragmented(params->type) && 2141 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2142 !iwl_mvm_is_oce_supported(mvm)) 2143 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2144 2145 if (iwl_mvm_is_oce_supported(mvm)) { 2146 if ((params->flags & 2147 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2148 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2149 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2150 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2151 * the same bit, we need to make sure that we use this bit here 2152 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2153 * used. */ 2154 if ((params->flags & 2155 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2156 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2157 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2158 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2159 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2160 } 2161 2162 return flags; 2163 } 2164 2165 static int 2166 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2167 struct iwl_scan_umac_schedule *schedule, 2168 __le16 *delay) 2169 { 2170 int i; 2171 if (WARN_ON(!params->n_scan_plans || 2172 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2173 return -EINVAL; 2174 2175 for (i = 0; i < params->n_scan_plans; i++) { 2176 struct cfg80211_sched_scan_plan *scan_plan = 2177 ¶ms->scan_plans[i]; 2178 2179 schedule[i].iter_count = scan_plan->iterations; 2180 schedule[i].interval = 2181 cpu_to_le16(scan_plan->interval); 2182 } 2183 2184 /* 2185 * If the number of iterations of the last scan plan is set to 2186 * zero, it should run infinitely. However, this is not always the case. 2187 * For example, when regular scan is requested the driver sets one scan 2188 * plan with one iteration. 2189 */ 2190 if (!schedule[params->n_scan_plans - 1].iter_count) 2191 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2192 2193 *delay = cpu_to_le16(params->delay); 2194 2195 return 0; 2196 } 2197 2198 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2199 struct iwl_mvm_scan_params *params, 2200 int type, int uid) 2201 { 2202 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2203 struct iwl_scan_umac_chan_param *chan_param; 2204 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2205 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2206 mvm->fw->ucode_capa.n_scan_channels; 2207 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2208 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2209 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2210 struct iwl_ssid_ie *direct_scan; 2211 int ret = 0; 2212 u32 ssid_bitmap = 0; 2213 u8 channel_flags = 0; 2214 u16 gen_flags; 2215 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2216 2217 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2218 2219 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2220 2221 mvm->scan_uid_status[uid] = type; 2222 2223 cmd->uid = cpu_to_le32(uid); 2224 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2225 cmd->general_flags = cpu_to_le16(gen_flags); 2226 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2227 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2228 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2229 IWL_SCAN_NUM_OF_FRAGS; 2230 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2231 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2232 IWL_SCAN_NUM_OF_FRAGS; 2233 2234 cmd->v8.general_flags2 = 2235 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2236 } 2237 2238 cmd->scan_start_mac_id = scan_vif->id; 2239 2240 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2241 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2242 2243 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2244 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2245 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2246 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2247 2248 /* set fragmented ebs for fragmented scan on HB channels */ 2249 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2250 if (gen_flags & 2251 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2252 (!iwl_mvm_is_cdb_supported(mvm) && 2253 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2254 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2255 } 2256 } 2257 2258 chan_param->flags = channel_flags; 2259 chan_param->count = params->n_channels; 2260 2261 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2262 &tail_v2->delay); 2263 if (ret) { 2264 mvm->scan_uid_status[uid] = 0; 2265 return ret; 2266 } 2267 2268 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2269 tail_v2->preq = params->preq; 2270 direct_scan = tail_v2->direct_scan; 2271 } else { 2272 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2273 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2274 ¶ms->preq); 2275 direct_scan = tail_v1->direct_scan; 2276 } 2277 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2278 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2279 params->n_channels, ssid_bitmap, 2280 cmd_data); 2281 return 0; 2282 } 2283 2284 static void 2285 iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm, 2286 struct iwl_mvm_scan_params *params, 2287 struct ieee80211_vif *vif, 2288 struct iwl_scan_general_params_v11 *gp, 2289 u16 gen_flags, u8 gen_flags2) 2290 { 2291 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2292 2293 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2294 2295 IWL_DEBUG_SCAN(mvm, "Gerenal: flags=0x%x, flags2=0x%x\n", 2296 gen_flags, gen_flags2); 2297 2298 gp->flags = cpu_to_le16(gen_flags); 2299 gp->flags2 = gen_flags2; 2300 2301 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2302 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2303 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2304 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2305 2306 gp->scan_start_mac_id = scan_vif->id; 2307 } 2308 2309 static void 2310 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2311 struct iwl_scan_probe_params_v3 *pp) 2312 { 2313 pp->preq = params->preq; 2314 pp->ssid_num = params->n_ssids; 2315 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2316 } 2317 2318 static void 2319 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2320 struct iwl_scan_probe_params_v4 *pp, 2321 u32 *bitmap_ssid) 2322 { 2323 pp->preq = params->preq; 2324 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2325 } 2326 2327 static void 2328 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2329 struct iwl_mvm_scan_params *params, 2330 struct ieee80211_vif *vif, 2331 struct iwl_scan_channel_params_v4 *cp, 2332 u32 channel_cfg_flags) 2333 { 2334 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2335 cp->count = params->n_channels; 2336 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2337 2338 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2339 params->n_channels, 2340 channel_cfg_flags, 2341 vif->type); 2342 } 2343 2344 static void 2345 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2346 struct iwl_mvm_scan_params *params, 2347 struct ieee80211_vif *vif, 2348 struct iwl_scan_channel_params_v6 *cp, 2349 u32 channel_cfg_flags) 2350 { 2351 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2352 cp->count = params->n_channels; 2353 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2354 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2355 2356 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2357 params->n_channels, 2358 channel_cfg_flags, 2359 vif->type); 2360 2361 if (params->enable_6ghz_passive) { 2362 struct ieee80211_supported_band *sband = 2363 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2364 u32 i; 2365 2366 for (i = 0; i < sband->n_channels; i++) { 2367 struct ieee80211_channel *channel = 2368 &sband->channels[i]; 2369 2370 struct iwl_scan_channel_cfg_umac *cfg = 2371 &cp->channel_config[cp->count]; 2372 2373 if (!cfg80211_channel_is_psc(channel)) 2374 continue; 2375 2376 cfg->flags = 0; 2377 cfg->v2.channel_num = channel->hw_value; 2378 cfg->v2.band = PHY_BAND_6; 2379 cfg->v2.iter_count = 1; 2380 cfg->v2.iter_interval = 0; 2381 cp->count++; 2382 } 2383 } 2384 } 2385 2386 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2387 struct iwl_mvm_scan_params *params, int type, 2388 int uid) 2389 { 2390 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2391 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2392 int ret; 2393 u16 gen_flags; 2394 2395 mvm->scan_uid_status[uid] = type; 2396 2397 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2398 cmd->uid = cpu_to_le32(uid); 2399 2400 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2401 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2402 &scan_p->general_params, 2403 gen_flags, 0); 2404 2405 ret = iwl_mvm_fill_scan_sched_params(params, 2406 scan_p->periodic_params.schedule, 2407 &scan_p->periodic_params.delay); 2408 if (ret) 2409 return ret; 2410 2411 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2412 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2413 &scan_p->channel_params, 0); 2414 2415 return 0; 2416 } 2417 2418 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2419 struct ieee80211_vif *vif, 2420 struct iwl_mvm_scan_params *params, 2421 int type, int uid, u32 version) 2422 { 2423 struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd; 2424 struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params; 2425 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2426 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2427 int ret; 2428 u16 gen_flags; 2429 u8 gen_flags2; 2430 u32 bitmap_ssid = 0; 2431 2432 mvm->scan_uid_status[uid] = type; 2433 2434 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2435 cmd->uid = cpu_to_le32(uid); 2436 2437 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2438 2439 if (version >= 15) 2440 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type); 2441 else 2442 gen_flags2 = 0; 2443 2444 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2445 &scan_p->general_params, 2446 gen_flags, gen_flags2); 2447 2448 ret = iwl_mvm_fill_scan_sched_params(params, 2449 scan_p->periodic_params.schedule, 2450 &scan_p->periodic_params.delay); 2451 if (ret) 2452 return ret; 2453 2454 if (!params->scan_6ghz) { 2455 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2456 &bitmap_ssid); 2457 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2458 &scan_p->channel_params, bitmap_ssid); 2459 2460 return 0; 2461 } else { 2462 pb->preq = params->preq; 2463 } 2464 2465 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2466 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2467 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2468 2469 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2470 2471 cp->count = iwl_mvm_umac_scan_cfg_channels_v6_6g(mvm, params, 2472 params->n_channels, 2473 pb, cp, vif->type); 2474 if (!cp->count) { 2475 mvm->scan_uid_status[uid] = 0; 2476 return -EINVAL; 2477 } 2478 2479 if (!params->n_ssids || 2480 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2481 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2482 2483 return 0; 2484 } 2485 2486 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2487 struct iwl_mvm_scan_params *params, int type, 2488 int uid) 2489 { 2490 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2491 } 2492 2493 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2494 struct iwl_mvm_scan_params *params, int type, 2495 int uid) 2496 { 2497 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2498 } 2499 2500 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2501 { 2502 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2503 } 2504 2505 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2506 { 2507 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2508 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2509 2510 /* This looks a bit arbitrary, but the idea is that if we run 2511 * out of possible simultaneous scans and the userspace is 2512 * trying to run a scan type that is already running, we 2513 * return -EBUSY. But if the userspace wants to start a 2514 * different type of scan, we stop the opposite type to make 2515 * space for the new request. The reason is backwards 2516 * compatibility with old wpa_supplicant that wouldn't stop a 2517 * scheduled scan before starting a normal scan. 2518 */ 2519 2520 /* FW supports only a single periodic scan */ 2521 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2522 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2523 return -EBUSY; 2524 2525 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2526 return 0; 2527 2528 /* Use a switch, even though this is a bitmask, so that more 2529 * than one bits set will fall in default and we will warn. 2530 */ 2531 switch (type) { 2532 case IWL_MVM_SCAN_REGULAR: 2533 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2534 return -EBUSY; 2535 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2536 case IWL_MVM_SCAN_SCHED: 2537 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2538 return -EBUSY; 2539 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2540 case IWL_MVM_SCAN_NETDETECT: 2541 /* For non-unified images, there's no need to stop 2542 * anything for net-detect since the firmware is 2543 * restarted anyway. This way, any sched scans that 2544 * were running will be restarted when we resume. 2545 */ 2546 if (!unified_image) 2547 return 0; 2548 2549 /* If this is a unified image and we ran out of scans, 2550 * we need to stop something. Prefer stopping regular 2551 * scans, because the results are useless at this 2552 * point, and we should be able to keep running 2553 * another scheduled scan while suspended. 2554 */ 2555 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2556 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2557 true); 2558 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2559 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2560 true); 2561 /* Something is wrong if no scan was running but we 2562 * ran out of scans. 2563 */ 2564 fallthrough; 2565 default: 2566 WARN_ON(1); 2567 break; 2568 } 2569 2570 return -EIO; 2571 } 2572 2573 #define SCAN_TIMEOUT 30000 2574 2575 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2576 { 2577 struct delayed_work *delayed_work = to_delayed_work(work); 2578 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2579 scan_timeout_dwork); 2580 2581 IWL_ERR(mvm, "regular scan timed out\n"); 2582 2583 iwl_force_nmi(mvm->trans); 2584 } 2585 2586 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2587 struct iwl_mvm_scan_params *params, 2588 struct ieee80211_vif *vif) 2589 { 2590 if (iwl_mvm_is_cdb_supported(mvm)) { 2591 params->type = 2592 iwl_mvm_get_scan_type_band(mvm, vif, 2593 NL80211_BAND_2GHZ); 2594 params->hb_type = 2595 iwl_mvm_get_scan_type_band(mvm, vif, 2596 NL80211_BAND_5GHZ); 2597 } else { 2598 params->type = iwl_mvm_get_scan_type(mvm, vif); 2599 } 2600 } 2601 2602 struct iwl_scan_umac_handler { 2603 u8 version; 2604 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2605 struct iwl_mvm_scan_params *params, int type, int uid); 2606 }; 2607 2608 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2609 .version = _ver, \ 2610 .handler = iwl_mvm_scan_umac_v##_ver, \ 2611 } 2612 2613 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2614 /* set the newest version first to shorten the list traverse time */ 2615 IWL_SCAN_UMAC_HANDLER(15), 2616 IWL_SCAN_UMAC_HANDLER(14), 2617 IWL_SCAN_UMAC_HANDLER(12), 2618 }; 2619 2620 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2621 struct ieee80211_vif *vif, 2622 struct iwl_host_cmd *hcmd, 2623 struct iwl_mvm_scan_params *params, 2624 int type) 2625 { 2626 int uid, i, err; 2627 u8 scan_ver; 2628 2629 lockdep_assert_held(&mvm->mutex); 2630 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); 2631 2632 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2633 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2634 2635 return iwl_mvm_scan_lmac(mvm, vif, params); 2636 } 2637 2638 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2639 if (uid < 0) 2640 return uid; 2641 2642 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2643 2644 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2645 IWL_FW_CMD_VER_UNKNOWN); 2646 2647 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2648 const struct iwl_scan_umac_handler *ver_handler = 2649 &iwl_scan_umac_handlers[i]; 2650 2651 if (ver_handler->version != scan_ver) 2652 continue; 2653 2654 return ver_handler->handler(mvm, vif, params, type, uid); 2655 } 2656 2657 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2658 if (err) 2659 return err; 2660 2661 return uid; 2662 } 2663 2664 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2665 struct ieee80211_vif *current_vif; 2666 bool p2p_go; 2667 enum nl80211_band band; 2668 }; 2669 2670 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2671 struct ieee80211_vif *vif) 2672 { 2673 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2674 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2675 2676 /* exclude the given vif */ 2677 if (vif == data->current_vif) 2678 return; 2679 2680 if (vif->type == NL80211_IFTYPE_AP && vif->p2p) { 2681 u32 link_id; 2682 2683 for (link_id = 0; 2684 link_id < ARRAY_SIZE(mvmvif->link); 2685 link_id++) { 2686 struct iwl_mvm_vif_link_info *link = 2687 mvmvif->link[link_id]; 2688 2689 if (link && link->phy_ctxt->id < NUM_PHY_CTX && 2690 (data->band == NUM_NL80211_BANDS || 2691 link->phy_ctxt->channel->band == data->band)) { 2692 data->p2p_go = true; 2693 break; 2694 } 2695 } 2696 } 2697 } 2698 2699 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2700 struct ieee80211_vif *vif, 2701 bool low_latency, 2702 enum nl80211_band band) 2703 { 2704 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2705 .current_vif = vif, 2706 .p2p_go = false, 2707 .band = band, 2708 }; 2709 2710 if (!low_latency) 2711 return false; 2712 2713 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2714 IEEE80211_IFACE_ITER_NORMAL, 2715 iwl_mvm_scan_respect_p2p_go_iter, 2716 &data); 2717 2718 return data.p2p_go; 2719 } 2720 2721 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2722 struct ieee80211_vif *vif, 2723 enum nl80211_band band) 2724 { 2725 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2726 2727 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2728 } 2729 2730 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2731 struct ieee80211_vif *vif) 2732 { 2733 bool low_latency = iwl_mvm_low_latency(mvm); 2734 2735 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2736 NUM_NL80211_BANDS); 2737 } 2738 2739 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2740 struct iwl_mvm_scan_params *params, 2741 struct ieee80211_vif *vif) 2742 { 2743 if (iwl_mvm_is_cdb_supported(mvm)) { 2744 params->respect_p2p_go = 2745 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2746 NL80211_BAND_2GHZ); 2747 params->respect_p2p_go_hb = 2748 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2749 NL80211_BAND_5GHZ); 2750 } else { 2751 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2752 } 2753 } 2754 2755 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2756 struct cfg80211_scan_request *req, 2757 struct ieee80211_scan_ies *ies) 2758 { 2759 struct iwl_host_cmd hcmd = { 2760 .len = { iwl_mvm_scan_size(mvm), }, 2761 .data = { mvm->scan_cmd, }, 2762 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2763 }; 2764 struct iwl_mvm_scan_params params = {}; 2765 int ret, uid; 2766 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2767 2768 lockdep_assert_held(&mvm->mutex); 2769 2770 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2771 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2772 return -EBUSY; 2773 } 2774 2775 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2776 if (ret) 2777 return ret; 2778 2779 /* we should have failed registration if scan_cmd was NULL */ 2780 if (WARN_ON(!mvm->scan_cmd)) 2781 return -ENOMEM; 2782 2783 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2784 return -ENOBUFS; 2785 2786 params.n_ssids = req->n_ssids; 2787 params.flags = req->flags; 2788 params.n_channels = req->n_channels; 2789 params.delay = 0; 2790 params.ssids = req->ssids; 2791 params.channels = req->channels; 2792 params.mac_addr = req->mac_addr; 2793 params.mac_addr_mask = req->mac_addr_mask; 2794 params.no_cck = req->no_cck; 2795 params.pass_all = true; 2796 params.n_match_sets = 0; 2797 params.match_sets = NULL; 2798 2799 params.scan_plans = &scan_plan; 2800 params.n_scan_plans = 1; 2801 2802 params.n_6ghz_params = req->n_6ghz_params; 2803 params.scan_6ghz_params = req->scan_6ghz_params; 2804 params.scan_6ghz = req->scan_6ghz; 2805 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2806 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2807 2808 if (req->duration) 2809 params.iter_notif = true; 2810 2811 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2812 2813 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 2814 2815 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2816 IWL_MVM_SCAN_REGULAR); 2817 2818 if (uid < 0) 2819 return uid; 2820 2821 iwl_mvm_pause_tcm(mvm, false); 2822 2823 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2824 if (ret) { 2825 /* If the scan failed, it usually means that the FW was unable 2826 * to allocate the time events. Warn on it, but maybe we 2827 * should try to send the command again with different params. 2828 */ 2829 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2830 iwl_mvm_resume_tcm(mvm); 2831 mvm->scan_uid_status[uid] = 0; 2832 return ret; 2833 } 2834 2835 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2836 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2837 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2838 2839 if (params.enable_6ghz_passive) 2840 mvm->last_6ghz_passive_scan_jiffies = jiffies; 2841 2842 schedule_delayed_work(&mvm->scan_timeout_dwork, 2843 msecs_to_jiffies(SCAN_TIMEOUT)); 2844 2845 return 0; 2846 } 2847 2848 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2849 struct ieee80211_vif *vif, 2850 struct cfg80211_sched_scan_request *req, 2851 struct ieee80211_scan_ies *ies, 2852 int type) 2853 { 2854 struct iwl_host_cmd hcmd = { 2855 .len = { iwl_mvm_scan_size(mvm), }, 2856 .data = { mvm->scan_cmd, }, 2857 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2858 }; 2859 struct iwl_mvm_scan_params params = {}; 2860 int ret, uid; 2861 int i, j; 2862 bool non_psc_included = false; 2863 2864 lockdep_assert_held(&mvm->mutex); 2865 2866 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2867 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2868 return -EBUSY; 2869 } 2870 2871 ret = iwl_mvm_check_running_scans(mvm, type); 2872 if (ret) 2873 return ret; 2874 2875 /* we should have failed registration if scan_cmd was NULL */ 2876 if (WARN_ON(!mvm->scan_cmd)) 2877 return -ENOMEM; 2878 2879 2880 params.n_ssids = req->n_ssids; 2881 params.flags = req->flags; 2882 params.n_channels = req->n_channels; 2883 params.ssids = req->ssids; 2884 params.channels = req->channels; 2885 params.mac_addr = req->mac_addr; 2886 params.mac_addr_mask = req->mac_addr_mask; 2887 params.no_cck = false; 2888 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2889 params.n_match_sets = req->n_match_sets; 2890 params.match_sets = req->match_sets; 2891 if (!req->n_scan_plans) 2892 return -EINVAL; 2893 2894 params.n_scan_plans = req->n_scan_plans; 2895 params.scan_plans = req->scan_plans; 2896 2897 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2898 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2899 2900 /* In theory, LMAC scans can handle a 32-bit delay, but since 2901 * waiting for over 18 hours to start the scan is a bit silly 2902 * and to keep it aligned with UMAC scans (which only support 2903 * 16-bit delays), trim it down to 16-bits. 2904 */ 2905 if (req->delay > U16_MAX) { 2906 IWL_DEBUG_SCAN(mvm, 2907 "delay value is > 16-bits, set to max possible\n"); 2908 params.delay = U16_MAX; 2909 } else { 2910 params.delay = req->delay; 2911 } 2912 2913 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2914 if (ret) 2915 return ret; 2916 2917 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2918 2919 /* for 6 GHZ band only PSC channels need to be added */ 2920 for (i = 0; i < params.n_channels; i++) { 2921 struct ieee80211_channel *channel = params.channels[i]; 2922 2923 if (channel->band == NL80211_BAND_6GHZ && 2924 !cfg80211_channel_is_psc(channel)) { 2925 non_psc_included = true; 2926 break; 2927 } 2928 } 2929 2930 if (non_psc_included) { 2931 params.channels = kmemdup(params.channels, 2932 sizeof(params.channels[0]) * 2933 params.n_channels, 2934 GFP_KERNEL); 2935 if (!params.channels) 2936 return -ENOMEM; 2937 2938 for (i = j = 0; i < params.n_channels; i++) { 2939 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2940 !cfg80211_channel_is_psc(params.channels[i])) 2941 continue; 2942 params.channels[j++] = params.channels[i]; 2943 } 2944 params.n_channels = j; 2945 } 2946 2947 if (non_psc_included && 2948 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2949 kfree(params.channels); 2950 return -ENOBUFS; 2951 } 2952 2953 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2954 2955 if (non_psc_included) 2956 kfree(params.channels); 2957 if (uid < 0) 2958 return uid; 2959 2960 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2961 if (!ret) { 2962 IWL_DEBUG_SCAN(mvm, 2963 "Sched scan request was sent successfully\n"); 2964 mvm->scan_status |= type; 2965 } else { 2966 /* If the scan failed, it usually means that the FW was unable 2967 * to allocate the time events. Warn on it, but maybe we 2968 * should try to send the command again with different params. 2969 */ 2970 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2971 mvm->scan_uid_status[uid] = 0; 2972 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2973 } 2974 2975 return ret; 2976 } 2977 2978 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2979 struct iwl_rx_cmd_buffer *rxb) 2980 { 2981 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2982 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2983 u32 uid = __le32_to_cpu(notif->uid); 2984 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2985 2986 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2987 return; 2988 2989 /* if the scan is already stopping, we don't need to notify mac80211 */ 2990 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2991 struct cfg80211_scan_info info = { 2992 .aborted = aborted, 2993 .scan_start_tsf = mvm->scan_start, 2994 }; 2995 2996 memcpy(info.tsf_bssid, mvm->scan_vif->deflink.bssid, ETH_ALEN); 2997 ieee80211_scan_completed(mvm->hw, &info); 2998 mvm->scan_vif = NULL; 2999 cancel_delayed_work(&mvm->scan_timeout_dwork); 3000 iwl_mvm_resume_tcm(mvm); 3001 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 3002 ieee80211_sched_scan_stopped(mvm->hw); 3003 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3004 } 3005 3006 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 3007 IWL_DEBUG_SCAN(mvm, 3008 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 3009 uid, mvm->scan_uid_status[uid], 3010 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3011 "completed" : "aborted", 3012 iwl_mvm_ebs_status_str(notif->ebs_status)); 3013 IWL_DEBUG_SCAN(mvm, 3014 "Last line %d, Last iteration %d, Time from last iteration %d\n", 3015 notif->last_schedule, notif->last_iter, 3016 __le32_to_cpu(notif->time_from_last_iter)); 3017 3018 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3019 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3020 mvm->last_ebs_successful = false; 3021 3022 mvm->scan_uid_status[uid] = 0; 3023 } 3024 3025 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3026 struct iwl_rx_cmd_buffer *rxb) 3027 { 3028 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3029 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3030 3031 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3032 3033 IWL_DEBUG_SCAN(mvm, 3034 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3035 notif->status, notif->scanned_channels); 3036 3037 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3038 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3039 ieee80211_sched_scan_results(mvm->hw); 3040 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3041 } 3042 3043 IWL_DEBUG_SCAN(mvm, 3044 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3045 mvm->scan_start); 3046 } 3047 3048 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 3049 { 3050 struct iwl_umac_scan_abort cmd = {}; 3051 int uid, ret; 3052 3053 lockdep_assert_held(&mvm->mutex); 3054 3055 /* We should always get a valid index here, because we already 3056 * checked that this type of scan was running in the generic 3057 * code. 3058 */ 3059 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3060 if (WARN_ON_ONCE(uid < 0)) 3061 return uid; 3062 3063 cmd.uid = cpu_to_le32(uid); 3064 3065 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3066 3067 ret = iwl_mvm_send_cmd_pdu(mvm, 3068 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3069 0, sizeof(cmd), &cmd); 3070 if (!ret) 3071 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3072 3073 return ret; 3074 } 3075 3076 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3077 { 3078 struct iwl_notification_wait wait_scan_done; 3079 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3080 SCAN_OFFLOAD_COMPLETE, }; 3081 int ret; 3082 3083 lockdep_assert_held(&mvm->mutex); 3084 3085 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3086 scan_done_notif, 3087 ARRAY_SIZE(scan_done_notif), 3088 NULL, NULL); 3089 3090 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3091 3092 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3093 ret = iwl_mvm_umac_scan_abort(mvm, type); 3094 else 3095 ret = iwl_mvm_lmac_scan_abort(mvm); 3096 3097 if (ret) { 3098 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3099 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3100 return ret; 3101 } 3102 3103 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3104 1 * HZ); 3105 } 3106 3107 static size_t iwl_scan_req_umac_get_size(u8 scan_ver) 3108 { 3109 switch (scan_ver) { 3110 case 12: 3111 return sizeof(struct iwl_scan_req_umac_v12); 3112 case 14: 3113 case 15: 3114 return sizeof(struct iwl_scan_req_umac_v15); 3115 } 3116 3117 return 0; 3118 } 3119 3120 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) 3121 { 3122 int base_size, tail_size; 3123 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3124 IWL_FW_CMD_VER_UNKNOWN); 3125 3126 base_size = iwl_scan_req_umac_get_size(scan_ver); 3127 if (base_size) 3128 return base_size; 3129 3130 3131 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3132 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3133 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3134 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3135 else if (iwl_mvm_cdb_scan_api(mvm)) 3136 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3137 else 3138 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3139 3140 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3141 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3142 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3143 else 3144 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3145 3146 return base_size + 3147 sizeof(struct iwl_scan_channel_cfg_umac) * 3148 mvm->fw->ucode_capa.n_scan_channels + 3149 tail_size; 3150 } 3151 return sizeof(struct iwl_scan_req_lmac) + 3152 sizeof(struct iwl_scan_channel_cfg_lmac) * 3153 mvm->fw->ucode_capa.n_scan_channels + 3154 sizeof(struct iwl_scan_probe_req_v1); 3155 } 3156 3157 /* 3158 * This function is used in nic restart flow, to inform mac80211 about scans 3159 * that was aborted by restart flow or by an assert. 3160 */ 3161 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3162 { 3163 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3164 int uid, i; 3165 3166 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3167 if (uid >= 0) { 3168 struct cfg80211_scan_info info = { 3169 .aborted = true, 3170 }; 3171 3172 cancel_delayed_work(&mvm->scan_timeout_dwork); 3173 3174 ieee80211_scan_completed(mvm->hw, &info); 3175 mvm->scan_uid_status[uid] = 0; 3176 } 3177 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3178 if (uid >= 0) { 3179 /* Sched scan will be restarted by mac80211 in 3180 * restart_hw, so do not report if FW is about to be 3181 * restarted. 3182 */ 3183 if (!mvm->fw_restart) 3184 ieee80211_sched_scan_stopped(mvm->hw); 3185 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3186 mvm->scan_uid_status[uid] = 0; 3187 } 3188 uid = iwl_mvm_scan_uid_by_status(mvm, 3189 IWL_MVM_SCAN_STOPPING_REGULAR); 3190 if (uid >= 0) 3191 mvm->scan_uid_status[uid] = 0; 3192 3193 uid = iwl_mvm_scan_uid_by_status(mvm, 3194 IWL_MVM_SCAN_STOPPING_SCHED); 3195 if (uid >= 0) 3196 mvm->scan_uid_status[uid] = 0; 3197 3198 /* We shouldn't have any UIDs still set. Loop over all the 3199 * UIDs to make sure there's nothing left there and warn if 3200 * any is found. 3201 */ 3202 for (i = 0; i < mvm->max_scans; i++) { 3203 if (WARN_ONCE(mvm->scan_uid_status[i], 3204 "UMAC scan UID %d status was not cleaned\n", 3205 i)) 3206 mvm->scan_uid_status[i] = 0; 3207 } 3208 } else { 3209 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3210 struct cfg80211_scan_info info = { 3211 .aborted = true, 3212 }; 3213 3214 cancel_delayed_work(&mvm->scan_timeout_dwork); 3215 ieee80211_scan_completed(mvm->hw, &info); 3216 } 3217 3218 /* Sched scan will be restarted by mac80211 in 3219 * restart_hw, so do not report if FW is about to be 3220 * restarted. 3221 */ 3222 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3223 !mvm->fw_restart) { 3224 ieee80211_sched_scan_stopped(mvm->hw); 3225 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3226 } 3227 } 3228 } 3229 3230 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3231 { 3232 int ret; 3233 3234 if (!(mvm->scan_status & type)) 3235 return 0; 3236 3237 if (iwl_mvm_is_radio_killed(mvm)) { 3238 ret = 0; 3239 goto out; 3240 } 3241 3242 ret = iwl_mvm_scan_stop_wait(mvm, type); 3243 if (!ret) 3244 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3245 out: 3246 /* Clear the scan status so the next scan requests will 3247 * succeed and mark the scan as stopping, so that the Rx 3248 * handler doesn't do anything, as the scan was stopped from 3249 * above. 3250 */ 3251 mvm->scan_status &= ~type; 3252 3253 if (type == IWL_MVM_SCAN_REGULAR) { 3254 cancel_delayed_work(&mvm->scan_timeout_dwork); 3255 if (notify) { 3256 struct cfg80211_scan_info info = { 3257 .aborted = true, 3258 }; 3259 3260 ieee80211_scan_completed(mvm->hw, &info); 3261 } 3262 } else if (notify) { 3263 ieee80211_sched_scan_stopped(mvm->hw); 3264 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3265 } 3266 3267 return ret; 3268 } 3269