1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <net/mac80211.h> 9 #include <linux/crc32.h> 10 11 #include "mvm.h" 12 #include "fw/api/scan.h" 13 #include "iwl-io.h" 14 15 #define IWL_DENSE_EBS_SCAN_RATIO 5 16 #define IWL_SPARSE_EBS_SCAN_RATIO 1 17 18 #define IWL_SCAN_DWELL_ACTIVE 10 19 #define IWL_SCAN_DWELL_PASSIVE 110 20 #define IWL_SCAN_DWELL_FRAGMENTED 44 21 #define IWL_SCAN_DWELL_EXTENDED 90 22 #define IWL_SCAN_NUM_OF_FRAGS 3 23 24 /* adaptive dwell max budget time [TU] for full scan */ 25 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 26 /* adaptive dwell max budget time [TU] for directed scan */ 27 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 28 /* adaptive dwell default high band APs number */ 29 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 30 /* adaptive dwell default low band APs number */ 31 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 32 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 33 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 34 /* number of scan channels */ 35 #define IWL_SCAN_NUM_CHANNELS 112 36 /* adaptive dwell number of APs override mask for p2p friendly GO */ 37 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 38 /* adaptive dwell number of APs override mask for social channels */ 39 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 40 /* adaptive dwell number of APs override for p2p friendly GO channels */ 41 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 42 /* adaptive dwell number of APs override for social channels */ 43 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 44 45 /* minimal number of 2GHz and 5GHz channels in the regular scan request */ 46 #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 47 48 struct iwl_mvm_scan_timing_params { 49 u32 suspend_time; 50 u32 max_out_time; 51 }; 52 53 static struct iwl_mvm_scan_timing_params scan_timing[] = { 54 [IWL_SCAN_TYPE_UNASSOC] = { 55 .suspend_time = 0, 56 .max_out_time = 0, 57 }, 58 [IWL_SCAN_TYPE_WILD] = { 59 .suspend_time = 30, 60 .max_out_time = 120, 61 }, 62 [IWL_SCAN_TYPE_MILD] = { 63 .suspend_time = 120, 64 .max_out_time = 120, 65 }, 66 [IWL_SCAN_TYPE_FRAGMENTED] = { 67 .suspend_time = 95, 68 .max_out_time = 44, 69 }, 70 [IWL_SCAN_TYPE_FAST_BALANCE] = { 71 .suspend_time = 30, 72 .max_out_time = 37, 73 }, 74 }; 75 76 struct iwl_mvm_scan_params { 77 /* For CDB this is low band scan type, for non-CDB - type. */ 78 enum iwl_mvm_scan_type type; 79 enum iwl_mvm_scan_type hb_type; 80 u32 n_channels; 81 u16 delay; 82 int n_ssids; 83 struct cfg80211_ssid *ssids; 84 struct ieee80211_channel **channels; 85 u32 flags; 86 u8 *mac_addr; 87 u8 *mac_addr_mask; 88 bool no_cck; 89 bool pass_all; 90 int n_match_sets; 91 struct iwl_scan_probe_req preq; 92 struct cfg80211_match_set *match_sets; 93 int n_scan_plans; 94 struct cfg80211_sched_scan_plan *scan_plans; 95 bool iter_notif; 96 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 97 u32 n_6ghz_params; 98 bool scan_6ghz; 99 bool enable_6ghz_passive; 100 bool respect_p2p_go, respect_p2p_go_hb; 101 }; 102 103 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 104 { 105 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 106 107 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 108 return (void *)&cmd->v8.data; 109 110 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 111 return (void *)&cmd->v7.data; 112 113 if (iwl_mvm_cdb_scan_api(mvm)) 114 return (void *)&cmd->v6.data; 115 116 return (void *)&cmd->v1.data; 117 } 118 119 static inline struct iwl_scan_umac_chan_param * 120 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 121 { 122 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 123 124 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 125 return &cmd->v8.channel; 126 127 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 128 return &cmd->v7.channel; 129 130 if (iwl_mvm_cdb_scan_api(mvm)) 131 return &cmd->v6.channel; 132 133 return &cmd->v1.channel; 134 } 135 136 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 137 { 138 if (mvm->scan_rx_ant != ANT_NONE) 139 return mvm->scan_rx_ant; 140 return iwl_mvm_get_valid_rx_ant(mvm); 141 } 142 143 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 144 { 145 u16 rx_chain; 146 u8 rx_ant; 147 148 rx_ant = iwl_mvm_scan_rx_ant(mvm); 149 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 150 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 151 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 152 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 153 return cpu_to_le16(rx_chain); 154 } 155 156 static inline __le32 157 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 158 bool no_cck) 159 { 160 u32 tx_ant; 161 162 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 163 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 164 165 if (band == NL80211_BAND_2GHZ && !no_cck) 166 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 167 tx_ant); 168 else 169 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 170 } 171 172 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 173 { 174 return mvm->tcm.result.global_load; 175 } 176 177 static enum iwl_mvm_traffic_load 178 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 179 { 180 return mvm->tcm.result.band_load[band]; 181 } 182 183 struct iwl_mvm_scan_iter_data { 184 u32 global_cnt; 185 struct ieee80211_vif *current_vif; 186 bool is_dcm_with_p2p_go; 187 }; 188 189 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 190 struct ieee80211_vif *vif) 191 { 192 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 193 struct iwl_mvm_scan_iter_data *data = _data; 194 struct iwl_mvm_vif *curr_mvmvif; 195 196 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 197 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 198 data->global_cnt += 1; 199 200 if (!data->current_vif || vif == data->current_vif) 201 return; 202 203 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 204 205 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 206 mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 207 mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 208 data->is_dcm_with_p2p_go = true; 209 } 210 211 static enum 212 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 213 struct ieee80211_vif *vif, 214 enum iwl_mvm_traffic_load load, 215 bool low_latency) 216 { 217 struct iwl_mvm_scan_iter_data data = { 218 .current_vif = vif, 219 .is_dcm_with_p2p_go = false, 220 .global_cnt = 0, 221 }; 222 223 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 224 IEEE80211_IFACE_ITER_NORMAL, 225 iwl_mvm_scan_iterator, 226 &data); 227 228 if (!data.global_cnt) 229 return IWL_SCAN_TYPE_UNASSOC; 230 231 if (fw_has_api(&mvm->fw->ucode_capa, 232 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 233 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 234 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 235 return IWL_SCAN_TYPE_FRAGMENTED; 236 237 /* 238 * in case of DCM with GO where BSS DTIM interval < 220msec 239 * set all scan requests as fast-balance scan 240 */ 241 if (vif && vif->type == NL80211_IFTYPE_STATION && 242 vif->bss_conf.dtim_period < 220 && 243 data.is_dcm_with_p2p_go) 244 return IWL_SCAN_TYPE_FAST_BALANCE; 245 } 246 247 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 248 return IWL_SCAN_TYPE_MILD; 249 250 return IWL_SCAN_TYPE_WILD; 251 } 252 253 static enum 254 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 255 struct ieee80211_vif *vif) 256 { 257 enum iwl_mvm_traffic_load load; 258 bool low_latency; 259 260 load = iwl_mvm_get_traffic_load(mvm); 261 low_latency = iwl_mvm_low_latency(mvm); 262 263 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 264 } 265 266 static enum 267 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 268 struct ieee80211_vif *vif, 269 enum nl80211_band band) 270 { 271 enum iwl_mvm_traffic_load load; 272 bool low_latency; 273 274 load = iwl_mvm_get_traffic_load_band(mvm, band); 275 low_latency = iwl_mvm_low_latency_band(mvm, band); 276 277 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 278 } 279 280 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 281 { 282 /* require rrm scan whenever the fw supports it */ 283 return fw_has_capa(&mvm->fw->ucode_capa, 284 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 285 } 286 287 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 288 { 289 int max_probe_len; 290 291 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 292 293 /* we create the 802.11 header and SSID element */ 294 max_probe_len -= 24 + 2; 295 296 /* DS parameter set element is added on 2.4GHZ band if required */ 297 if (iwl_mvm_rrm_scan_needed(mvm)) 298 max_probe_len -= 3; 299 300 return max_probe_len; 301 } 302 303 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 304 { 305 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 306 307 /* TODO: [BUG] This function should return the maximum allowed size of 308 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 309 * in the same command. So the correct implementation of this function 310 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 311 * command has only 512 bytes and it would leave us with about 240 312 * bytes for scan IEs, which is clearly not enough. So meanwhile 313 * we will report an incorrect value. This may result in a failure to 314 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 315 * functions with -ENOBUFS, if a large enough probe will be provided. 316 */ 317 return max_ie_len; 318 } 319 320 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 321 struct iwl_rx_cmd_buffer *rxb) 322 { 323 struct iwl_rx_packet *pkt = rxb_addr(rxb); 324 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 325 326 IWL_DEBUG_SCAN(mvm, 327 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 328 notif->status, notif->scanned_channels); 329 330 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 331 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 332 ieee80211_sched_scan_results(mvm->hw); 333 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 334 } 335 } 336 337 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 338 struct iwl_rx_cmd_buffer *rxb) 339 { 340 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 341 ieee80211_sched_scan_results(mvm->hw); 342 } 343 344 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 345 { 346 switch (status) { 347 case IWL_SCAN_EBS_SUCCESS: 348 return "successful"; 349 case IWL_SCAN_EBS_INACTIVE: 350 return "inactive"; 351 case IWL_SCAN_EBS_FAILED: 352 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 353 default: 354 return "failed"; 355 } 356 } 357 358 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 359 struct iwl_rx_cmd_buffer *rxb) 360 { 361 struct iwl_rx_packet *pkt = rxb_addr(rxb); 362 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 363 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 364 365 /* If this happens, the firmware has mistakenly sent an LMAC 366 * notification during UMAC scans -- warn and ignore it. 367 */ 368 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 369 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 370 return; 371 372 /* scan status must be locked for proper checking */ 373 lockdep_assert_held(&mvm->mutex); 374 375 /* We first check if we were stopping a scan, in which case we 376 * just clear the stopping flag. Then we check if it was a 377 * firmware initiated stop, in which case we need to inform 378 * mac80211. 379 * Note that we can have a stopping and a running scan 380 * simultaneously, but we can't have two different types of 381 * scans stopping or running at the same time (since LMAC 382 * doesn't support it). 383 */ 384 385 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 386 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 387 388 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 389 aborted ? "aborted" : "completed", 390 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 391 IWL_DEBUG_SCAN(mvm, 392 "Last line %d, Last iteration %d, Time after last iteration %d\n", 393 scan_notif->last_schedule_line, 394 scan_notif->last_schedule_iteration, 395 __le32_to_cpu(scan_notif->time_after_last_iter)); 396 397 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 398 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 399 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 400 aborted ? "aborted" : "completed", 401 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 402 403 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 404 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 405 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 406 407 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 408 aborted ? "aborted" : "completed", 409 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 410 IWL_DEBUG_SCAN(mvm, 411 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 412 scan_notif->last_schedule_line, 413 scan_notif->last_schedule_iteration, 414 __le32_to_cpu(scan_notif->time_after_last_iter)); 415 416 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 417 ieee80211_sched_scan_stopped(mvm->hw); 418 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 419 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 420 struct cfg80211_scan_info info = { 421 .aborted = aborted, 422 }; 423 424 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 425 aborted ? "aborted" : "completed", 426 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 427 428 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 429 ieee80211_scan_completed(mvm->hw, &info); 430 cancel_delayed_work(&mvm->scan_timeout_dwork); 431 iwl_mvm_resume_tcm(mvm); 432 } else { 433 IWL_ERR(mvm, 434 "got scan complete notification but no scan is running\n"); 435 } 436 437 mvm->last_ebs_successful = 438 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 439 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 440 } 441 442 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 443 { 444 int i; 445 446 for (i = 0; i < PROBE_OPTION_MAX; i++) { 447 if (!ssid_list[i].len) 448 break; 449 if (ssid_list[i].len == ssid_len && 450 !memcmp(ssid_list->ssid, ssid, ssid_len)) 451 return i; 452 } 453 return -1; 454 } 455 456 /* We insert the SSIDs in an inverted order, because the FW will 457 * invert it back. 458 */ 459 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 460 struct iwl_ssid_ie *ssids, 461 u32 *ssid_bitmap) 462 { 463 int i, j; 464 int index; 465 u32 tmp_bitmap = 0; 466 467 /* 468 * copy SSIDs from match list. 469 * iwl_config_sched_scan_profiles() uses the order of these ssids to 470 * config match list. 471 */ 472 for (i = 0, j = params->n_match_sets - 1; 473 j >= 0 && i < PROBE_OPTION_MAX; 474 i++, j--) { 475 /* skip empty SSID matchsets */ 476 if (!params->match_sets[j].ssid.ssid_len) 477 continue; 478 ssids[i].id = WLAN_EID_SSID; 479 ssids[i].len = params->match_sets[j].ssid.ssid_len; 480 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 481 ssids[i].len); 482 } 483 484 /* add SSIDs from scan SSID list */ 485 for (j = params->n_ssids - 1; 486 j >= 0 && i < PROBE_OPTION_MAX; 487 i++, j--) { 488 index = iwl_ssid_exist(params->ssids[j].ssid, 489 params->ssids[j].ssid_len, 490 ssids); 491 if (index < 0) { 492 ssids[i].id = WLAN_EID_SSID; 493 ssids[i].len = params->ssids[j].ssid_len; 494 memcpy(ssids[i].ssid, params->ssids[j].ssid, 495 ssids[i].len); 496 tmp_bitmap |= BIT(i); 497 } else { 498 tmp_bitmap |= BIT(index); 499 } 500 } 501 if (ssid_bitmap) 502 *ssid_bitmap = tmp_bitmap; 503 } 504 505 static int 506 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 507 struct cfg80211_sched_scan_request *req) 508 { 509 struct iwl_scan_offload_profile *profile; 510 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 511 struct iwl_scan_offload_blocklist *blocklist; 512 struct iwl_scan_offload_profile_cfg_data *data; 513 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 514 int profile_cfg_size = sizeof(*data) + 515 sizeof(*profile) * max_profiles; 516 struct iwl_host_cmd cmd = { 517 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 518 .len[1] = profile_cfg_size, 519 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 520 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 521 }; 522 int blocklist_len; 523 int i; 524 int ret; 525 526 if (WARN_ON(req->n_match_sets > max_profiles)) 527 return -EIO; 528 529 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 530 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 531 else 532 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 533 534 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 535 if (!blocklist) 536 return -ENOMEM; 537 538 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 539 if (!profile_cfg_v1) { 540 ret = -ENOMEM; 541 goto free_blocklist; 542 } 543 544 cmd.data[0] = blocklist; 545 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 546 cmd.data[1] = profile_cfg_v1; 547 548 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 549 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 550 struct iwl_scan_offload_profile_cfg *profile_cfg = 551 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 552 553 data = &profile_cfg->data; 554 } else { 555 data = &profile_cfg_v1->data; 556 } 557 558 /* No blocklist configuration */ 559 data->num_profiles = req->n_match_sets; 560 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 561 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 562 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 563 564 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 565 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 566 567 for (i = 0; i < req->n_match_sets; i++) { 568 profile = &profile_cfg_v1->profiles[i]; 569 profile->ssid_index = i; 570 /* Support any cipher and auth algorithm */ 571 profile->unicast_cipher = 0xff; 572 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 573 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 574 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 575 profile->network_type = IWL_NETWORK_TYPE_ANY; 576 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 577 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 578 } 579 580 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 581 582 ret = iwl_mvm_send_cmd(mvm, &cmd); 583 kfree(profile_cfg_v1); 584 free_blocklist: 585 kfree(blocklist); 586 587 return ret; 588 } 589 590 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 591 struct cfg80211_sched_scan_request *req) 592 { 593 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 594 IWL_DEBUG_SCAN(mvm, 595 "Sending scheduled scan with filtering, n_match_sets %d\n", 596 req->n_match_sets); 597 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 598 return false; 599 } 600 601 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 602 603 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 604 return true; 605 } 606 607 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 608 { 609 int ret; 610 struct iwl_host_cmd cmd = { 611 .id = SCAN_OFFLOAD_ABORT_CMD, 612 }; 613 u32 status = CAN_ABORT_STATUS; 614 615 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 616 if (ret) 617 return ret; 618 619 if (status != CAN_ABORT_STATUS) { 620 /* 621 * The scan abort will return 1 for success or 622 * 2 for "failure". A failure condition can be 623 * due to simply not being in an active scan which 624 * can occur if we send the scan abort before the 625 * microcode has notified us that a scan is completed. 626 */ 627 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 628 ret = -ENOENT; 629 } 630 631 return ret; 632 } 633 634 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 635 struct iwl_scan_req_tx_cmd *tx_cmd, 636 bool no_cck) 637 { 638 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 639 TX_CMD_FLG_BT_DIS); 640 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 641 NL80211_BAND_2GHZ, 642 no_cck); 643 644 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 645 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 646 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 647 648 /* 649 * Fw doesn't use this sta anymore, pending deprecation via HOST API 650 * change 651 */ 652 } else { 653 tx_cmd[0].sta_id = 0xff; 654 tx_cmd[1].sta_id = 0xff; 655 } 656 657 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 658 TX_CMD_FLG_BT_DIS); 659 660 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 661 NL80211_BAND_5GHZ, 662 no_cck); 663 } 664 665 static void 666 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 667 struct ieee80211_channel **channels, 668 int n_channels, u32 ssid_bitmap, 669 struct iwl_scan_req_lmac *cmd) 670 { 671 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 672 int i; 673 674 for (i = 0; i < n_channels; i++) { 675 channel_cfg[i].channel_num = 676 cpu_to_le16(channels[i]->hw_value); 677 channel_cfg[i].iter_count = cpu_to_le16(1); 678 channel_cfg[i].iter_interval = 0; 679 channel_cfg[i].flags = 680 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 681 ssid_bitmap); 682 } 683 } 684 685 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 686 size_t len, u8 *const pos) 687 { 688 static const u8 before_ds_params[] = { 689 WLAN_EID_SSID, 690 WLAN_EID_SUPP_RATES, 691 WLAN_EID_REQUEST, 692 WLAN_EID_EXT_SUPP_RATES, 693 }; 694 size_t offs; 695 u8 *newpos = pos; 696 697 if (!iwl_mvm_rrm_scan_needed(mvm)) { 698 memcpy(newpos, ies, len); 699 return newpos + len; 700 } 701 702 offs = ieee80211_ie_split(ies, len, 703 before_ds_params, 704 ARRAY_SIZE(before_ds_params), 705 0); 706 707 memcpy(newpos, ies, offs); 708 newpos += offs; 709 710 /* Add a placeholder for DS Parameter Set element */ 711 *newpos++ = WLAN_EID_DS_PARAMS; 712 *newpos++ = 1; 713 *newpos++ = 0; 714 715 memcpy(newpos, ies + offs, len - offs); 716 newpos += len - offs; 717 718 return newpos; 719 } 720 721 #define WFA_TPC_IE_LEN 9 722 723 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 724 { 725 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 726 pos[1] = WFA_TPC_IE_LEN - 2; 727 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 728 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 729 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 730 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 731 pos[6] = 0; 732 /* pos[7] - tx power will be inserted by the FW */ 733 pos[7] = 0; 734 pos[8] = 0; 735 } 736 737 static void 738 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 739 struct ieee80211_scan_ies *ies, 740 struct iwl_mvm_scan_params *params) 741 { 742 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 743 u8 *pos, *newpos; 744 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 745 params->mac_addr : NULL; 746 747 /* 748 * Unfortunately, right now the offload scan doesn't support randomising 749 * within the firmware, so until the firmware API is ready we implement 750 * it in the driver. This means that the scan iterations won't really be 751 * random, only when it's restarted, but at least that helps a bit. 752 */ 753 if (mac_addr) 754 get_random_mask_addr(frame->sa, mac_addr, 755 params->mac_addr_mask); 756 else 757 memcpy(frame->sa, vif->addr, ETH_ALEN); 758 759 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 760 eth_broadcast_addr(frame->da); 761 eth_broadcast_addr(frame->bssid); 762 frame->seq_ctrl = 0; 763 764 pos = frame->u.probe_req.variable; 765 *pos++ = WLAN_EID_SSID; 766 *pos++ = 0; 767 768 params->preq.mac_header.offset = 0; 769 params->preq.mac_header.len = cpu_to_le16(24 + 2); 770 771 /* Insert ds parameter set element on 2.4 GHz band */ 772 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 773 ies->ies[NL80211_BAND_2GHZ], 774 ies->len[NL80211_BAND_2GHZ], 775 pos); 776 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 777 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 778 pos = newpos; 779 780 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 781 ies->len[NL80211_BAND_5GHZ]); 782 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 783 params->preq.band_data[1].len = 784 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 785 pos += ies->len[NL80211_BAND_5GHZ]; 786 787 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 788 ies->len[NL80211_BAND_6GHZ]); 789 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 790 params->preq.band_data[2].len = 791 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 792 pos += ies->len[NL80211_BAND_6GHZ]; 793 memcpy(pos, ies->common_ies, ies->common_ie_len); 794 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 795 796 if (iwl_mvm_rrm_scan_needed(mvm) && 797 !fw_has_capa(&mvm->fw->ucode_capa, 798 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 799 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 800 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 801 WFA_TPC_IE_LEN); 802 } else { 803 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 804 } 805 } 806 807 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 808 struct iwl_scan_req_lmac *cmd, 809 struct iwl_mvm_scan_params *params) 810 { 811 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 812 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 813 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 814 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 815 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 816 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 817 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 818 } 819 820 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 821 struct ieee80211_scan_ies *ies, 822 int n_channels) 823 { 824 return ((n_ssids <= PROBE_OPTION_MAX) && 825 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 826 (ies->common_ie_len + 827 ies->len[NL80211_BAND_2GHZ] + 828 ies->len[NL80211_BAND_5GHZ] <= 829 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 830 } 831 832 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 833 struct ieee80211_vif *vif) 834 { 835 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 836 bool low_latency; 837 838 if (iwl_mvm_is_cdb_supported(mvm)) 839 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 840 else 841 low_latency = iwl_mvm_low_latency(mvm); 842 843 /* We can only use EBS if: 844 * 1. the feature is supported; 845 * 2. the last EBS was successful; 846 * 3. if only single scan, the single scan EBS API is supported; 847 * 4. it's not a p2p find operation. 848 * 5. we are not in low latency mode, 849 * or if fragmented ebs is supported by the FW 850 */ 851 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 852 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 853 vif->type != NL80211_IFTYPE_P2P_DEVICE && 854 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 855 } 856 857 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 858 { 859 return params->n_scan_plans == 1 && 860 params->scan_plans[0].iterations == 1; 861 } 862 863 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 864 { 865 return (type == IWL_SCAN_TYPE_FRAGMENTED || 866 type == IWL_SCAN_TYPE_FAST_BALANCE); 867 } 868 869 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 870 struct iwl_mvm_scan_params *params, 871 struct ieee80211_vif *vif) 872 { 873 int flags = 0; 874 875 if (params->n_ssids == 0) 876 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 877 878 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 879 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 880 881 if (iwl_mvm_is_scan_fragmented(params->type)) 882 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 883 884 if (iwl_mvm_rrm_scan_needed(mvm) && 885 fw_has_capa(&mvm->fw->ucode_capa, 886 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 887 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 888 889 if (params->pass_all) 890 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 891 else 892 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 893 894 #ifdef CONFIG_IWLWIFI_DEBUGFS 895 if (mvm->scan_iter_notif_enabled) 896 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 897 #endif 898 899 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 900 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 901 902 if (iwl_mvm_is_regular_scan(params) && 903 vif->type != NL80211_IFTYPE_P2P_DEVICE && 904 !iwl_mvm_is_scan_fragmented(params->type)) 905 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 906 907 return flags; 908 } 909 910 static void 911 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 912 struct iwl_scan_probe_req *src_p_req) 913 { 914 int i; 915 916 p_req->mac_header = src_p_req->mac_header; 917 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 918 p_req->band_data[i] = src_p_req->band_data[i]; 919 p_req->common_data = src_p_req->common_data; 920 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 921 } 922 923 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 924 struct iwl_mvm_scan_params *params) 925 { 926 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 927 struct iwl_scan_probe_req_v1 *preq = 928 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 929 mvm->fw->ucode_capa.n_scan_channels); 930 u32 ssid_bitmap = 0; 931 int i; 932 u8 band; 933 934 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 935 return -EINVAL; 936 937 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 938 939 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 940 cmd->iter_num = cpu_to_le32(1); 941 cmd->n_channels = (u8)params->n_channels; 942 943 cmd->delay = cpu_to_le32(params->delay); 944 945 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 946 vif)); 947 948 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 949 cmd->flags = cpu_to_le32(band); 950 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 951 MAC_FILTER_IN_BEACON); 952 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 953 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 954 955 /* this API uses bits 1-20 instead of 0-19 */ 956 ssid_bitmap <<= 1; 957 958 for (i = 0; i < params->n_scan_plans; i++) { 959 struct cfg80211_sched_scan_plan *scan_plan = 960 ¶ms->scan_plans[i]; 961 962 cmd->schedule[i].delay = 963 cpu_to_le16(scan_plan->interval); 964 cmd->schedule[i].iterations = scan_plan->iterations; 965 cmd->schedule[i].full_scan_mul = 1; 966 } 967 968 /* 969 * If the number of iterations of the last scan plan is set to 970 * zero, it should run infinitely. However, this is not always the case. 971 * For example, when regular scan is requested the driver sets one scan 972 * plan with one iteration. 973 */ 974 if (!cmd->schedule[i - 1].iterations) 975 cmd->schedule[i - 1].iterations = 0xff; 976 977 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 978 cmd->channel_opt[0].flags = 979 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 980 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 981 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 982 cmd->channel_opt[0].non_ebs_ratio = 983 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 984 cmd->channel_opt[1].flags = 985 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 986 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 987 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 988 cmd->channel_opt[1].non_ebs_ratio = 989 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 990 } 991 992 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 993 params->n_channels, ssid_bitmap, cmd); 994 995 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 996 997 return 0; 998 } 999 1000 static int rate_to_scan_rate_flag(unsigned int rate) 1001 { 1002 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1003 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1004 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1005 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1006 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1007 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1008 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1009 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1010 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1011 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1012 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1013 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1014 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1015 }; 1016 1017 return rate_to_scan_rate[rate]; 1018 } 1019 1020 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1021 { 1022 struct ieee80211_supported_band *band; 1023 unsigned int rates = 0; 1024 int i; 1025 1026 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1027 for (i = 0; i < band->n_bitrates; i++) 1028 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1029 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1030 for (i = 0; i < band->n_bitrates; i++) 1031 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1032 1033 /* Set both basic rates and supported rates */ 1034 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1035 1036 return cpu_to_le32(rates); 1037 } 1038 1039 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1040 struct iwl_scan_dwell *dwell) 1041 { 1042 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1043 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1044 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1045 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1046 } 1047 1048 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1049 u32 max_channels) 1050 { 1051 struct ieee80211_supported_band *band; 1052 int i, j = 0; 1053 1054 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1055 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1056 channels[j] = band->channels[i].hw_value; 1057 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1058 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1059 channels[j] = band->channels[i].hw_value; 1060 } 1061 1062 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1063 u32 flags, u8 channel_flags, 1064 u32 max_channels) 1065 { 1066 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1067 struct iwl_scan_config_v1 *cfg = config; 1068 1069 cfg->flags = cpu_to_le32(flags); 1070 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1071 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1072 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1073 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1074 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1075 1076 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1077 1078 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1079 1080 /* This function should not be called when using ADD_STA ver >=12 */ 1081 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1082 1083 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1084 cfg->channel_flags = channel_flags; 1085 1086 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1087 } 1088 1089 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1090 u32 flags, u8 channel_flags, 1091 u32 max_channels) 1092 { 1093 struct iwl_scan_config_v2 *cfg = config; 1094 1095 cfg->flags = cpu_to_le32(flags); 1096 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1097 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1098 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1099 1100 if (iwl_mvm_is_cdb_supported(mvm)) { 1101 enum iwl_mvm_scan_type lb_type, hb_type; 1102 1103 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1104 NL80211_BAND_2GHZ); 1105 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1106 NL80211_BAND_5GHZ); 1107 1108 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1109 cpu_to_le32(scan_timing[lb_type].max_out_time); 1110 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1111 cpu_to_le32(scan_timing[lb_type].suspend_time); 1112 1113 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1114 cpu_to_le32(scan_timing[hb_type].max_out_time); 1115 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1116 cpu_to_le32(scan_timing[hb_type].suspend_time); 1117 } else { 1118 enum iwl_mvm_scan_type type = 1119 iwl_mvm_get_scan_type(mvm, NULL); 1120 1121 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1122 cpu_to_le32(scan_timing[type].max_out_time); 1123 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1124 cpu_to_le32(scan_timing[type].suspend_time); 1125 } 1126 1127 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1128 1129 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1130 1131 /* This function should not be called when using ADD_STA ver >=12 */ 1132 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12); 1133 1134 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1135 cfg->channel_flags = channel_flags; 1136 1137 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1138 } 1139 1140 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1141 { 1142 void *cfg; 1143 int ret, cmd_size; 1144 struct iwl_host_cmd cmd = { 1145 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1146 }; 1147 enum iwl_mvm_scan_type type; 1148 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1149 int num_channels = 1150 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1151 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1152 u32 flags; 1153 u8 channel_flags; 1154 1155 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1156 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1157 1158 if (iwl_mvm_is_cdb_supported(mvm)) { 1159 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1160 NL80211_BAND_2GHZ); 1161 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1162 NL80211_BAND_5GHZ); 1163 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1164 return 0; 1165 } else { 1166 type = iwl_mvm_get_scan_type(mvm, NULL); 1167 if (type == mvm->scan_type) 1168 return 0; 1169 } 1170 1171 if (iwl_mvm_cdb_scan_api(mvm)) 1172 cmd_size = sizeof(struct iwl_scan_config_v2); 1173 else 1174 cmd_size = sizeof(struct iwl_scan_config_v1); 1175 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1176 1177 cfg = kzalloc(cmd_size, GFP_KERNEL); 1178 if (!cfg) 1179 return -ENOMEM; 1180 1181 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1182 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1183 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1184 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1185 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1186 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1187 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1188 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1189 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1190 SCAN_CONFIG_N_CHANNELS(num_channels) | 1191 (iwl_mvm_is_scan_fragmented(type) ? 1192 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1193 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1194 1195 channel_flags = IWL_CHANNEL_FLAG_EBS | 1196 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1197 IWL_CHANNEL_FLAG_EBS_ADD | 1198 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1199 1200 /* 1201 * Check for fragmented scan on LMAC2 - high band. 1202 * LMAC1 - low band is checked above. 1203 */ 1204 if (iwl_mvm_cdb_scan_api(mvm)) { 1205 if (iwl_mvm_is_cdb_supported(mvm)) 1206 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1207 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1208 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1209 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1210 num_channels); 1211 } else { 1212 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1213 num_channels); 1214 } 1215 1216 cmd.data[0] = cfg; 1217 cmd.len[0] = cmd_size; 1218 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1219 1220 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1221 1222 ret = iwl_mvm_send_cmd(mvm, &cmd); 1223 if (!ret) { 1224 mvm->scan_type = type; 1225 mvm->hb_scan_type = hb_type; 1226 } 1227 1228 kfree(cfg); 1229 return ret; 1230 } 1231 1232 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1233 { 1234 struct iwl_scan_config cfg; 1235 struct iwl_host_cmd cmd = { 1236 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1237 .len[0] = sizeof(cfg), 1238 .data[0] = &cfg, 1239 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1240 }; 1241 1242 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1243 return iwl_mvm_legacy_config_scan(mvm); 1244 1245 memset(&cfg, 0, sizeof(cfg)); 1246 1247 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) { 1248 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1249 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1250 /* 1251 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1252 * version 5. 1253 */ 1254 cfg.bcast_sta_id = 0xff; 1255 } 1256 1257 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1258 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1259 1260 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1261 1262 return iwl_mvm_send_cmd(mvm, &cmd); 1263 } 1264 1265 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1266 { 1267 int i; 1268 1269 for (i = 0; i < mvm->max_scans; i++) 1270 if (mvm->scan_uid_status[i] == status) 1271 return i; 1272 1273 return -ENOENT; 1274 } 1275 1276 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1277 struct iwl_scan_req_umac *cmd, 1278 struct iwl_mvm_scan_params *params) 1279 { 1280 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1281 u8 active_dwell, passive_dwell; 1282 1283 timing = &scan_timing[params->type]; 1284 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1285 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1286 1287 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1288 cmd->v7.adwell_default_n_aps_social = 1289 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1290 cmd->v7.adwell_default_n_aps = 1291 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1292 1293 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1294 cmd->v9.adwell_default_hb_n_aps = 1295 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1296 1297 /* if custom max budget was configured with debugfs */ 1298 if (IWL_MVM_ADWELL_MAX_BUDGET) 1299 cmd->v7.adwell_max_budget = 1300 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1301 else if (params->ssids && params->ssids[0].ssid_len) 1302 cmd->v7.adwell_max_budget = 1303 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1304 else 1305 cmd->v7.adwell_max_budget = 1306 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1307 1308 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1309 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1310 cpu_to_le32(timing->max_out_time); 1311 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1312 cpu_to_le32(timing->suspend_time); 1313 1314 if (iwl_mvm_is_cdb_supported(mvm)) { 1315 hb_timing = &scan_timing[params->hb_type]; 1316 1317 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1318 cpu_to_le32(hb_timing->max_out_time); 1319 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1320 cpu_to_le32(hb_timing->suspend_time); 1321 } 1322 1323 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1324 cmd->v7.active_dwell = active_dwell; 1325 cmd->v7.passive_dwell = passive_dwell; 1326 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1327 } else { 1328 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1329 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1330 if (iwl_mvm_is_cdb_supported(mvm)) { 1331 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1332 active_dwell; 1333 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1334 passive_dwell; 1335 } 1336 } 1337 } else { 1338 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1339 cmd->v1.active_dwell = active_dwell; 1340 cmd->v1.passive_dwell = passive_dwell; 1341 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1342 1343 if (iwl_mvm_is_cdb_supported(mvm)) { 1344 hb_timing = &scan_timing[params->hb_type]; 1345 1346 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1347 cpu_to_le32(hb_timing->max_out_time); 1348 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1349 cpu_to_le32(hb_timing->suspend_time); 1350 } 1351 1352 if (iwl_mvm_cdb_scan_api(mvm)) { 1353 cmd->v6.scan_priority = 1354 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1355 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1356 cpu_to_le32(timing->max_out_time); 1357 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1358 cpu_to_le32(timing->suspend_time); 1359 } else { 1360 cmd->v1.scan_priority = 1361 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1362 cmd->v1.max_out_time = 1363 cpu_to_le32(timing->max_out_time); 1364 cmd->v1.suspend_time = 1365 cpu_to_le32(timing->suspend_time); 1366 } 1367 } 1368 1369 if (iwl_mvm_is_regular_scan(params)) 1370 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1371 else 1372 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1373 } 1374 1375 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1376 { 1377 return iwl_mvm_is_regular_scan(params) ? 1378 IWL_SCAN_PRIORITY_EXT_6 : 1379 IWL_SCAN_PRIORITY_EXT_2; 1380 } 1381 1382 static void 1383 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1384 struct iwl_scan_general_params_v11 *general_params, 1385 struct iwl_mvm_scan_params *params) 1386 { 1387 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1388 u8 active_dwell, passive_dwell; 1389 1390 timing = &scan_timing[params->type]; 1391 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1392 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1393 1394 general_params->adwell_default_social_chn = 1395 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1396 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1397 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1398 1399 /* if custom max budget was configured with debugfs */ 1400 if (IWL_MVM_ADWELL_MAX_BUDGET) 1401 general_params->adwell_max_budget = 1402 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1403 else if (params->ssids && params->ssids[0].ssid_len) 1404 general_params->adwell_max_budget = 1405 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1406 else 1407 general_params->adwell_max_budget = 1408 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1409 1410 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1411 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1412 cpu_to_le32(timing->max_out_time); 1413 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1414 cpu_to_le32(timing->suspend_time); 1415 1416 hb_timing = &scan_timing[params->hb_type]; 1417 1418 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1419 cpu_to_le32(hb_timing->max_out_time); 1420 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1421 cpu_to_le32(hb_timing->suspend_time); 1422 1423 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1424 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1425 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1426 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1427 } 1428 1429 struct iwl_mvm_scan_channel_segment { 1430 u8 start_idx; 1431 u8 end_idx; 1432 u8 first_channel_id; 1433 u8 last_channel_id; 1434 u8 channel_spacing_shift; 1435 u8 band; 1436 }; 1437 1438 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1439 { 1440 .start_idx = 0, 1441 .end_idx = 13, 1442 .first_channel_id = 1, 1443 .last_channel_id = 14, 1444 .channel_spacing_shift = 0, 1445 .band = PHY_BAND_24 1446 }, 1447 { 1448 .start_idx = 14, 1449 .end_idx = 41, 1450 .first_channel_id = 36, 1451 .last_channel_id = 144, 1452 .channel_spacing_shift = 2, 1453 .band = PHY_BAND_5 1454 }, 1455 { 1456 .start_idx = 42, 1457 .end_idx = 50, 1458 .first_channel_id = 149, 1459 .last_channel_id = 181, 1460 .channel_spacing_shift = 2, 1461 .band = PHY_BAND_5 1462 }, 1463 { 1464 .start_idx = 51, 1465 .end_idx = 111, 1466 .first_channel_id = 1, 1467 .last_channel_id = 241, 1468 .channel_spacing_shift = 2, 1469 .band = PHY_BAND_6 1470 }, 1471 }; 1472 1473 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1474 { 1475 int i, index; 1476 1477 if (!channel_id) 1478 return -EINVAL; 1479 1480 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1481 const struct iwl_mvm_scan_channel_segment *ch_segment = 1482 &scan_channel_segments[i]; 1483 u32 ch_offset; 1484 1485 if (ch_segment->band != band || 1486 ch_segment->first_channel_id > channel_id || 1487 ch_segment->last_channel_id < channel_id) 1488 continue; 1489 1490 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1491 ch_segment->channel_spacing_shift; 1492 1493 index = scan_channel_segments[i].start_idx + ch_offset; 1494 if (index < IWL_SCAN_NUM_CHANNELS) 1495 return index; 1496 1497 break; 1498 } 1499 1500 return -EINVAL; 1501 } 1502 1503 static const u8 p2p_go_friendly_chs[] = { 1504 36, 40, 44, 48, 149, 153, 157, 161, 165, 1505 }; 1506 1507 static const u8 social_chs[] = { 1508 1, 6, 11 1509 }; 1510 1511 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1512 u8 ch_id, u8 band, u8 *ch_bitmap, 1513 size_t bitmap_n_entries) 1514 { 1515 int i; 1516 1517 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1518 return; 1519 1520 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1521 if (p2p_go_friendly_chs[i] == ch_id) { 1522 int ch_idx, bitmap_idx; 1523 1524 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1525 if (ch_idx < 0) 1526 return; 1527 1528 bitmap_idx = ch_idx / 8; 1529 if (bitmap_idx >= bitmap_n_entries) 1530 return; 1531 1532 ch_idx = ch_idx % 8; 1533 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1534 1535 return; 1536 } 1537 } 1538 } 1539 1540 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1541 { 1542 int i; 1543 u32 flags = 0; 1544 1545 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1546 goto out; 1547 1548 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1549 if (p2p_go_friendly_chs[i] == ch_id) { 1550 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1551 break; 1552 } 1553 } 1554 1555 if (flags) 1556 goto out; 1557 1558 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1559 if (social_chs[i] == ch_id) { 1560 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1561 break; 1562 } 1563 } 1564 1565 out: 1566 return flags; 1567 } 1568 1569 static void 1570 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1571 struct ieee80211_channel **channels, 1572 int n_channels, u32 flags, 1573 struct iwl_scan_channel_cfg_umac *channel_cfg) 1574 { 1575 int i; 1576 1577 for (i = 0; i < n_channels; i++) { 1578 channel_cfg[i].flags = cpu_to_le32(flags); 1579 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1580 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1581 enum nl80211_band band = channels[i]->band; 1582 1583 channel_cfg[i].v2.band = 1584 iwl_mvm_phy_band_from_nl80211(band); 1585 channel_cfg[i].v2.iter_count = 1; 1586 channel_cfg[i].v2.iter_interval = 0; 1587 } else { 1588 channel_cfg[i].v1.iter_count = 1; 1589 channel_cfg[i].v1.iter_interval = 0; 1590 } 1591 } 1592 } 1593 1594 static void 1595 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1596 struct ieee80211_channel **channels, 1597 struct iwl_scan_channel_params_v4 *cp, 1598 int n_channels, u32 flags, 1599 enum nl80211_iftype vif_type) 1600 { 1601 u8 *bitmap = cp->adwell_ch_override_bitmap; 1602 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1603 int i; 1604 1605 for (i = 0; i < n_channels; i++) { 1606 enum nl80211_band band = channels[i]->band; 1607 struct iwl_scan_channel_cfg_umac *cfg = 1608 &cp->channel_config[i]; 1609 1610 cfg->flags = cpu_to_le32(flags); 1611 cfg->v2.channel_num = channels[i]->hw_value; 1612 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1613 cfg->v2.iter_count = 1; 1614 cfg->v2.iter_interval = 0; 1615 1616 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1617 cfg->v2.channel_num, 1618 cfg->v2.band, bitmap, 1619 bitmap_n_entries); 1620 } 1621 } 1622 1623 static void 1624 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1625 struct ieee80211_channel **channels, 1626 struct iwl_scan_channel_params_v6 *cp, 1627 int n_channels, u32 flags, 1628 enum nl80211_iftype vif_type) 1629 { 1630 int i; 1631 1632 for (i = 0; i < n_channels; i++) { 1633 enum nl80211_band band = channels[i]->band; 1634 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1635 u32 n_aps_flag = 1636 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1637 channels[i]->hw_value); 1638 1639 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1640 cfg->v2.channel_num = channels[i]->hw_value; 1641 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1642 if (cfg80211_channel_is_psc(channels[i])) 1643 cfg->flags = 0; 1644 cfg->v2.iter_count = 1; 1645 cfg->v2.iter_interval = 0; 1646 } 1647 } 1648 1649 static void 1650 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1651 struct iwl_mvm_scan_params *params, 1652 struct iwl_scan_probe_params_v4 *pp) 1653 { 1654 int j, idex_s = 0, idex_b = 0; 1655 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1656 params->scan_6ghz_params; 1657 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1658 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1659 1660 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1661 j++) { 1662 if (!params->ssids[j].ssid_len) 1663 continue; 1664 1665 pp->short_ssid[idex_s] = 1666 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1667 params->ssids[j].ssid_len)); 1668 1669 if (hidden_supported) { 1670 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1671 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1672 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1673 params->ssids[j].ssid_len); 1674 } 1675 idex_s++; 1676 } 1677 1678 /* 1679 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1680 * collocated parameters. This might not be optimal, as this processing 1681 * does not (yet) correspond to the actual channels, so it is possible 1682 * that some entries would be left out. 1683 * 1684 * TODO: improve this logic. 1685 */ 1686 for (j = 0; j < params->n_6ghz_params; j++) { 1687 int k; 1688 1689 /* First, try to place the short SSID */ 1690 if (scan_6ghz_params[j].short_ssid_valid) { 1691 for (k = 0; k < idex_s; k++) { 1692 if (pp->short_ssid[k] == 1693 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1694 break; 1695 } 1696 1697 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1698 pp->short_ssid[idex_s++] = 1699 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1700 } 1701 } 1702 1703 /* try to place BSSID for the same entry */ 1704 for (k = 0; k < idex_b; k++) { 1705 if (!memcmp(&pp->bssid_array[k], 1706 scan_6ghz_params[j].bssid, ETH_ALEN)) 1707 break; 1708 } 1709 1710 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1711 memcpy(&pp->bssid_array[idex_b++], 1712 scan_6ghz_params[j].bssid, ETH_ALEN); 1713 } 1714 } 1715 1716 pp->short_ssid_num = idex_s; 1717 pp->bssid_num = idex_b; 1718 } 1719 1720 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1721 static u32 1722 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm *mvm, 1723 struct iwl_mvm_scan_params *params, 1724 u32 n_channels, 1725 struct iwl_scan_probe_params_v4 *pp, 1726 struct iwl_scan_channel_params_v6 *cp, 1727 enum nl80211_iftype vif_type) 1728 { 1729 int i; 1730 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1731 params->scan_6ghz_params; 1732 u32 ch_cnt; 1733 1734 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1735 struct iwl_scan_channel_cfg_umac *cfg = 1736 &cp->channel_config[ch_cnt]; 1737 1738 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1739 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1740 bool force_passive, found = false, allow_passive = true, 1741 unsolicited_probe_on_chan = false, psc_no_listen = false; 1742 1743 /* 1744 * Avoid performing passive scan on non PSC channels unless the 1745 * scan is specifically a passive scan, i.e., no SSIDs 1746 * configured in the scan command. 1747 */ 1748 if (!cfg80211_channel_is_psc(params->channels[i]) && 1749 !params->n_6ghz_params && params->n_ssids) 1750 continue; 1751 1752 cfg->v1.channel_num = params->channels[i]->hw_value; 1753 cfg->v2.band = 2; 1754 cfg->v2.iter_count = 1; 1755 cfg->v2.iter_interval = 0; 1756 1757 /* 1758 * The optimize the scan time, i.e., reduce the scan dwell time 1759 * on each channel, the below logic tries to set 3 direct BSSID 1760 * probe requests for each broadcast probe request with a short 1761 * SSID. 1762 * TODO: improve this logic 1763 */ 1764 n_used_bssid_entries = 3; 1765 for (j = 0; j < params->n_6ghz_params; j++) { 1766 if (!(scan_6ghz_params[j].channel_idx == i)) 1767 continue; 1768 1769 found = false; 1770 unsolicited_probe_on_chan |= 1771 scan_6ghz_params[j].unsolicited_probe; 1772 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1773 1774 for (k = 0; k < pp->short_ssid_num; k++) { 1775 if (!scan_6ghz_params[j].unsolicited_probe && 1776 le32_to_cpu(pp->short_ssid[k]) == 1777 scan_6ghz_params[j].short_ssid) { 1778 /* Relevant short SSID bit set */ 1779 if (s_ssid_bitmap & BIT(k)) { 1780 found = true; 1781 break; 1782 } 1783 1784 /* 1785 * Use short SSID only to create a new 1786 * iteration during channel dwell or in 1787 * case that the short SSID has a 1788 * matching SSID, i.e., scan for hidden 1789 * APs. 1790 */ 1791 if (n_used_bssid_entries >= 3) { 1792 s_ssid_bitmap |= BIT(k); 1793 s_max++; 1794 n_used_bssid_entries -= 3; 1795 found = true; 1796 break; 1797 } else if (pp->direct_scan[k].len) { 1798 s_ssid_bitmap |= BIT(k); 1799 s_max++; 1800 found = true; 1801 allow_passive = false; 1802 break; 1803 } 1804 } 1805 } 1806 1807 if (found) 1808 continue; 1809 1810 for (k = 0; k < pp->bssid_num; k++) { 1811 if (!memcmp(&pp->bssid_array[k], 1812 scan_6ghz_params[j].bssid, 1813 ETH_ALEN)) { 1814 if (!(bssid_bitmap & BIT(k))) { 1815 bssid_bitmap |= BIT(k); 1816 b_max++; 1817 n_used_bssid_entries++; 1818 } 1819 break; 1820 } 1821 } 1822 } 1823 1824 if (cfg80211_channel_is_psc(params->channels[i]) && 1825 psc_no_listen) 1826 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1827 1828 if (unsolicited_probe_on_chan) 1829 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1830 1831 /* 1832 * In the following cases apply passive scan: 1833 * 1. Non fragmented scan: 1834 * - PSC channel with NO_LISTEN_FLAG on should be treated 1835 * like non PSC channel 1836 * - Non PSC channel with more than 3 short SSIDs or more 1837 * than 9 BSSIDs. 1838 * - Non PSC Channel with unsolicited probe response and 1839 * more than 2 short SSIDs or more than 6 BSSIDs. 1840 * - PSC channel with more than 2 short SSIDs or more than 1841 * 6 BSSIDs. 1842 * 3. Fragmented scan: 1843 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1844 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1845 * - Non PSC channel with unsolicited probe response and 1846 * more than 1 SSID or more than 3 BSSIDs. 1847 */ 1848 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1849 if (!cfg80211_channel_is_psc(params->channels[i]) || 1850 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1851 force_passive = (s_max > 3 || b_max > 9); 1852 force_passive |= (unsolicited_probe_on_chan && 1853 (s_max > 2 || b_max > 6)); 1854 } else { 1855 force_passive = (s_max > 2 || b_max > 6); 1856 } 1857 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1858 force_passive = (s_max > 1 || b_max > 3); 1859 } else { 1860 force_passive = (s_max > 2 || b_max > 6); 1861 force_passive |= (unsolicited_probe_on_chan && 1862 (s_max > 1 || b_max > 3)); 1863 } 1864 if ((allow_passive && force_passive) || 1865 (!(bssid_bitmap | s_ssid_bitmap) && 1866 !cfg80211_channel_is_psc(params->channels[i]))) 1867 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1868 else 1869 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1870 1871 cfg->flags |= cpu_to_le32(flags); 1872 ch_cnt++; 1873 } 1874 1875 if (params->n_channels > ch_cnt) 1876 IWL_DEBUG_SCAN(mvm, 1877 "6GHz: reducing number channels: (%u->%u)\n", 1878 params->n_channels, ch_cnt); 1879 1880 return ch_cnt; 1881 } 1882 1883 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1884 struct iwl_mvm_scan_params *params, 1885 struct ieee80211_vif *vif) 1886 { 1887 u8 flags = 0; 1888 1889 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1890 1891 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1892 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1893 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1894 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1895 1896 /* set fragmented ebs for fragmented scan on HB channels */ 1897 if ((!iwl_mvm_is_cdb_supported(mvm) && 1898 iwl_mvm_is_scan_fragmented(params->type)) || 1899 (iwl_mvm_is_cdb_supported(mvm) && 1900 iwl_mvm_is_scan_fragmented(params->hb_type))) 1901 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1902 1903 /* 1904 * force EBS in case the scan is a fragmented and there is a need to take P2P 1905 * GO operation into consideration during scan operation. 1906 */ 1907 if ((!iwl_mvm_is_cdb_supported(mvm) && 1908 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1909 (iwl_mvm_is_cdb_supported(mvm) && 1910 iwl_mvm_is_scan_fragmented(params->hb_type) && 1911 params->respect_p2p_go_hb)) { 1912 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1913 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1914 } 1915 1916 return flags; 1917 } 1918 1919 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1920 struct iwl_mvm_scan_params *params, 1921 struct ieee80211_vif *vif) 1922 { 1923 struct ieee80211_supported_band *sband = 1924 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1925 u32 n_disabled, i; 1926 1927 params->enable_6ghz_passive = false; 1928 1929 if (params->scan_6ghz) 1930 return; 1931 1932 if (!fw_has_capa(&mvm->fw->ucode_capa, 1933 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 1934 IWL_DEBUG_SCAN(mvm, 1935 "6GHz passive scan: Not supported by FW\n"); 1936 return; 1937 } 1938 1939 /* 6GHz passive scan allowed only on station interface */ 1940 if (vif->type != NL80211_IFTYPE_STATION) { 1941 IWL_DEBUG_SCAN(mvm, 1942 "6GHz passive scan: not station interface\n"); 1943 return; 1944 } 1945 1946 /* 1947 * 6GHz passive scan is allowed in a defined time interval following HW 1948 * reset or resume flow, or while not associated and a large interval 1949 * has passed since the last 6GHz passive scan. 1950 */ 1951 if ((vif->bss_conf.assoc || 1952 time_after(mvm->last_6ghz_passive_scan_jiffies + 1953 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 1954 (time_before(mvm->last_reset_or_resume_time_jiffies + 1955 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 1956 jiffies))) { 1957 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 1958 vif->bss_conf.assoc ? "associated" : 1959 "timeout did not expire"); 1960 return; 1961 } 1962 1963 /* not enough channels in the regular scan request */ 1964 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 1965 IWL_DEBUG_SCAN(mvm, 1966 "6GHz passive scan: not enough channels\n"); 1967 return; 1968 } 1969 1970 for (i = 0; i < params->n_ssids; i++) { 1971 if (!params->ssids[i].ssid_len) 1972 break; 1973 } 1974 1975 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 1976 if (i == params->n_ssids) { 1977 IWL_DEBUG_SCAN(mvm, 1978 "6GHz passive scan: no wildcard SSID\n"); 1979 return; 1980 } 1981 1982 if (!sband || !sband->n_channels) { 1983 IWL_DEBUG_SCAN(mvm, 1984 "6GHz passive scan: no 6GHz channels\n"); 1985 return; 1986 } 1987 1988 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 1989 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 1990 n_disabled++; 1991 } 1992 1993 /* 1994 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 1995 * scan 1996 */ 1997 if (n_disabled != sband->n_channels) { 1998 IWL_DEBUG_SCAN(mvm, 1999 "6GHz passive scan: 6GHz channels enabled\n"); 2000 return; 2001 } 2002 2003 /* all conditions to enable 6ghz passive scan are satisfied */ 2004 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2005 params->enable_6ghz_passive = true; 2006 } 2007 2008 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2009 struct iwl_mvm_scan_params *params, 2010 struct ieee80211_vif *vif, 2011 int type) 2012 { 2013 u16 flags = 0; 2014 2015 /* 2016 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2017 * if there is a single SSID which is not the broadcast SSID, assume 2018 * that the scan is intended for roaming purposes and thus enable Rx on 2019 * all chains to improve chances of hearing the beacons/probe responses. 2020 */ 2021 if (params->n_ssids == 0) 2022 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2023 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2024 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2025 2026 if (iwl_mvm_is_scan_fragmented(params->type)) 2027 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2028 2029 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2030 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2031 2032 if (params->pass_all) 2033 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2034 else 2035 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2036 2037 if (!iwl_mvm_is_regular_scan(params)) 2038 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2039 2040 if (params->iter_notif || 2041 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2042 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2043 2044 if (IWL_MVM_ADWELL_ENABLE) 2045 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2046 2047 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2048 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2049 2050 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2051 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2052 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2053 2054 if (params->enable_6ghz_passive) 2055 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2056 2057 if (iwl_mvm_is_oce_supported(mvm) && 2058 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2059 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2060 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2061 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2062 2063 return flags; 2064 } 2065 2066 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2067 struct iwl_mvm_scan_params *params, 2068 struct ieee80211_vif *vif, int type) 2069 { 2070 u8 flags = 0; 2071 2072 if (iwl_mvm_is_cdb_supported(mvm)) { 2073 if (params->respect_p2p_go) 2074 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2075 if (params->respect_p2p_go_hb) 2076 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2077 } else { 2078 if (params->respect_p2p_go) 2079 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2080 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2081 } 2082 2083 return flags; 2084 } 2085 2086 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2087 struct iwl_mvm_scan_params *params, 2088 struct ieee80211_vif *vif) 2089 { 2090 u16 flags = 0; 2091 2092 if (params->n_ssids == 0) 2093 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2094 2095 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2096 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2097 2098 if (iwl_mvm_is_scan_fragmented(params->type)) 2099 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2100 2101 if (iwl_mvm_is_cdb_supported(mvm) && 2102 iwl_mvm_is_scan_fragmented(params->hb_type)) 2103 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2104 2105 if (iwl_mvm_rrm_scan_needed(mvm) && 2106 fw_has_capa(&mvm->fw->ucode_capa, 2107 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2108 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2109 2110 if (params->pass_all) 2111 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2112 else 2113 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2114 2115 if (!iwl_mvm_is_regular_scan(params)) 2116 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2117 2118 if (params->iter_notif) 2119 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2120 2121 #ifdef CONFIG_IWLWIFI_DEBUGFS 2122 if (mvm->scan_iter_notif_enabled) 2123 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2124 #endif 2125 2126 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2127 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2128 2129 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2130 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2131 2132 /* 2133 * Extended dwell is relevant only for low band to start with, as it is 2134 * being used for social channles only (1, 6, 11), so we can check 2135 * only scan type on low band also for CDB. 2136 */ 2137 if (iwl_mvm_is_regular_scan(params) && 2138 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2139 !iwl_mvm_is_scan_fragmented(params->type) && 2140 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2141 !iwl_mvm_is_oce_supported(mvm)) 2142 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2143 2144 if (iwl_mvm_is_oce_supported(mvm)) { 2145 if ((params->flags & 2146 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2147 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2148 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2149 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2150 * the same bit, we need to make sure that we use this bit here 2151 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2152 * used. */ 2153 if ((params->flags & 2154 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2155 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2156 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2157 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2158 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2159 } 2160 2161 return flags; 2162 } 2163 2164 static int 2165 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2166 struct iwl_scan_umac_schedule *schedule, 2167 __le16 *delay) 2168 { 2169 int i; 2170 if (WARN_ON(!params->n_scan_plans || 2171 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2172 return -EINVAL; 2173 2174 for (i = 0; i < params->n_scan_plans; i++) { 2175 struct cfg80211_sched_scan_plan *scan_plan = 2176 ¶ms->scan_plans[i]; 2177 2178 schedule[i].iter_count = scan_plan->iterations; 2179 schedule[i].interval = 2180 cpu_to_le16(scan_plan->interval); 2181 } 2182 2183 /* 2184 * If the number of iterations of the last scan plan is set to 2185 * zero, it should run infinitely. However, this is not always the case. 2186 * For example, when regular scan is requested the driver sets one scan 2187 * plan with one iteration. 2188 */ 2189 if (!schedule[params->n_scan_plans - 1].iter_count) 2190 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2191 2192 *delay = cpu_to_le16(params->delay); 2193 2194 return 0; 2195 } 2196 2197 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2198 struct iwl_mvm_scan_params *params, 2199 int type, int uid) 2200 { 2201 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2202 struct iwl_scan_umac_chan_param *chan_param; 2203 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2204 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2205 mvm->fw->ucode_capa.n_scan_channels; 2206 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2207 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2208 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2209 struct iwl_ssid_ie *direct_scan; 2210 int ret = 0; 2211 u32 ssid_bitmap = 0; 2212 u8 channel_flags = 0; 2213 u16 gen_flags; 2214 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2215 2216 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2217 2218 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2219 2220 mvm->scan_uid_status[uid] = type; 2221 2222 cmd->uid = cpu_to_le32(uid); 2223 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2224 cmd->general_flags = cpu_to_le16(gen_flags); 2225 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2226 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2227 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2228 IWL_SCAN_NUM_OF_FRAGS; 2229 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2230 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2231 IWL_SCAN_NUM_OF_FRAGS; 2232 2233 cmd->v8.general_flags2 = 2234 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2235 } 2236 2237 cmd->scan_start_mac_id = scan_vif->id; 2238 2239 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2240 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2241 2242 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2243 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2244 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2245 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2246 2247 /* set fragmented ebs for fragmented scan on HB channels */ 2248 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2249 if (gen_flags & 2250 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2251 (!iwl_mvm_is_cdb_supported(mvm) && 2252 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2253 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2254 } 2255 } 2256 2257 chan_param->flags = channel_flags; 2258 chan_param->count = params->n_channels; 2259 2260 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2261 &tail_v2->delay); 2262 if (ret) { 2263 mvm->scan_uid_status[uid] = 0; 2264 return ret; 2265 } 2266 2267 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2268 tail_v2->preq = params->preq; 2269 direct_scan = tail_v2->direct_scan; 2270 } else { 2271 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2272 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2273 ¶ms->preq); 2274 direct_scan = tail_v1->direct_scan; 2275 } 2276 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2277 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2278 params->n_channels, ssid_bitmap, 2279 cmd_data); 2280 return 0; 2281 } 2282 2283 static void 2284 iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm, 2285 struct iwl_mvm_scan_params *params, 2286 struct ieee80211_vif *vif, 2287 struct iwl_scan_general_params_v11 *gp, 2288 u16 gen_flags, u8 gen_flags2) 2289 { 2290 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2291 2292 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2293 2294 IWL_DEBUG_SCAN(mvm, "Gerenal: flags=0x%x, flags2=0x%x\n", 2295 gen_flags, gen_flags2); 2296 2297 gp->flags = cpu_to_le16(gen_flags); 2298 gp->flags2 = gen_flags2; 2299 2300 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2301 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2302 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2303 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2304 2305 gp->scan_start_mac_id = scan_vif->id; 2306 } 2307 2308 static void 2309 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2310 struct iwl_scan_probe_params_v3 *pp) 2311 { 2312 pp->preq = params->preq; 2313 pp->ssid_num = params->n_ssids; 2314 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2315 } 2316 2317 static void 2318 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2319 struct iwl_scan_probe_params_v4 *pp, 2320 u32 *bitmap_ssid) 2321 { 2322 pp->preq = params->preq; 2323 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2324 } 2325 2326 static void 2327 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2328 struct iwl_mvm_scan_params *params, 2329 struct ieee80211_vif *vif, 2330 struct iwl_scan_channel_params_v4 *cp, 2331 u32 channel_cfg_flags) 2332 { 2333 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2334 cp->count = params->n_channels; 2335 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2336 2337 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2338 params->n_channels, 2339 channel_cfg_flags, 2340 vif->type); 2341 } 2342 2343 static void 2344 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2345 struct iwl_mvm_scan_params *params, 2346 struct ieee80211_vif *vif, 2347 struct iwl_scan_channel_params_v6 *cp, 2348 u32 channel_cfg_flags) 2349 { 2350 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2351 cp->count = params->n_channels; 2352 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2353 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2354 2355 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2356 params->n_channels, 2357 channel_cfg_flags, 2358 vif->type); 2359 2360 if (params->enable_6ghz_passive) { 2361 struct ieee80211_supported_band *sband = 2362 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2363 u32 i; 2364 2365 for (i = 0; i < sband->n_channels; i++) { 2366 struct ieee80211_channel *channel = 2367 &sband->channels[i]; 2368 2369 struct iwl_scan_channel_cfg_umac *cfg = 2370 &cp->channel_config[cp->count]; 2371 2372 if (!cfg80211_channel_is_psc(channel)) 2373 continue; 2374 2375 cfg->flags = 0; 2376 cfg->v2.channel_num = channel->hw_value; 2377 cfg->v2.band = PHY_BAND_6; 2378 cfg->v2.iter_count = 1; 2379 cfg->v2.iter_interval = 0; 2380 cp->count++; 2381 } 2382 } 2383 } 2384 2385 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2386 struct iwl_mvm_scan_params *params, int type, 2387 int uid) 2388 { 2389 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2390 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2391 int ret; 2392 u16 gen_flags; 2393 2394 mvm->scan_uid_status[uid] = type; 2395 2396 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2397 cmd->uid = cpu_to_le32(uid); 2398 2399 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2400 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2401 &scan_p->general_params, 2402 gen_flags, 0); 2403 2404 ret = iwl_mvm_fill_scan_sched_params(params, 2405 scan_p->periodic_params.schedule, 2406 &scan_p->periodic_params.delay); 2407 if (ret) 2408 return ret; 2409 2410 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2411 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2412 &scan_p->channel_params, 0); 2413 2414 return 0; 2415 } 2416 2417 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2418 struct ieee80211_vif *vif, 2419 struct iwl_mvm_scan_params *params, 2420 int type, int uid, u32 version) 2421 { 2422 struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd; 2423 struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params; 2424 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2425 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2426 int ret; 2427 u16 gen_flags; 2428 u8 gen_flags2; 2429 u32 bitmap_ssid = 0; 2430 2431 mvm->scan_uid_status[uid] = type; 2432 2433 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2434 cmd->uid = cpu_to_le32(uid); 2435 2436 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2437 2438 if (version >= 15) 2439 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type); 2440 else 2441 gen_flags2 = 0; 2442 2443 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2444 &scan_p->general_params, 2445 gen_flags, gen_flags2); 2446 2447 ret = iwl_mvm_fill_scan_sched_params(params, 2448 scan_p->periodic_params.schedule, 2449 &scan_p->periodic_params.delay); 2450 if (ret) 2451 return ret; 2452 2453 if (!params->scan_6ghz) { 2454 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2455 &bitmap_ssid); 2456 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2457 &scan_p->channel_params, bitmap_ssid); 2458 2459 return 0; 2460 } else { 2461 pb->preq = params->preq; 2462 } 2463 2464 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2465 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2466 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2467 2468 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2469 2470 cp->count = iwl_mvm_umac_scan_cfg_channels_v6_6g(mvm, params, 2471 params->n_channels, 2472 pb, cp, vif->type); 2473 if (!cp->count) { 2474 mvm->scan_uid_status[uid] = 0; 2475 return -EINVAL; 2476 } 2477 2478 if (!params->n_ssids || 2479 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2480 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2481 2482 return 0; 2483 } 2484 2485 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2486 struct iwl_mvm_scan_params *params, int type, 2487 int uid) 2488 { 2489 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2490 } 2491 2492 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2493 struct iwl_mvm_scan_params *params, int type, 2494 int uid) 2495 { 2496 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2497 } 2498 2499 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2500 { 2501 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2502 } 2503 2504 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2505 { 2506 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2507 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2508 2509 /* This looks a bit arbitrary, but the idea is that if we run 2510 * out of possible simultaneous scans and the userspace is 2511 * trying to run a scan type that is already running, we 2512 * return -EBUSY. But if the userspace wants to start a 2513 * different type of scan, we stop the opposite type to make 2514 * space for the new request. The reason is backwards 2515 * compatibility with old wpa_supplicant that wouldn't stop a 2516 * scheduled scan before starting a normal scan. 2517 */ 2518 2519 /* FW supports only a single periodic scan */ 2520 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2521 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2522 return -EBUSY; 2523 2524 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2525 return 0; 2526 2527 /* Use a switch, even though this is a bitmask, so that more 2528 * than one bits set will fall in default and we will warn. 2529 */ 2530 switch (type) { 2531 case IWL_MVM_SCAN_REGULAR: 2532 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2533 return -EBUSY; 2534 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2535 case IWL_MVM_SCAN_SCHED: 2536 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2537 return -EBUSY; 2538 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2539 case IWL_MVM_SCAN_NETDETECT: 2540 /* For non-unified images, there's no need to stop 2541 * anything for net-detect since the firmware is 2542 * restarted anyway. This way, any sched scans that 2543 * were running will be restarted when we resume. 2544 */ 2545 if (!unified_image) 2546 return 0; 2547 2548 /* If this is a unified image and we ran out of scans, 2549 * we need to stop something. Prefer stopping regular 2550 * scans, because the results are useless at this 2551 * point, and we should be able to keep running 2552 * another scheduled scan while suspended. 2553 */ 2554 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2555 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2556 true); 2557 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2558 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2559 true); 2560 /* Something is wrong if no scan was running but we 2561 * ran out of scans. 2562 */ 2563 fallthrough; 2564 default: 2565 WARN_ON(1); 2566 break; 2567 } 2568 2569 return -EIO; 2570 } 2571 2572 #define SCAN_TIMEOUT 30000 2573 2574 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2575 { 2576 struct delayed_work *delayed_work = to_delayed_work(work); 2577 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2578 scan_timeout_dwork); 2579 2580 IWL_ERR(mvm, "regular scan timed out\n"); 2581 2582 iwl_force_nmi(mvm->trans); 2583 } 2584 2585 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2586 struct iwl_mvm_scan_params *params, 2587 struct ieee80211_vif *vif) 2588 { 2589 if (iwl_mvm_is_cdb_supported(mvm)) { 2590 params->type = 2591 iwl_mvm_get_scan_type_band(mvm, vif, 2592 NL80211_BAND_2GHZ); 2593 params->hb_type = 2594 iwl_mvm_get_scan_type_band(mvm, vif, 2595 NL80211_BAND_5GHZ); 2596 } else { 2597 params->type = iwl_mvm_get_scan_type(mvm, vif); 2598 } 2599 } 2600 2601 struct iwl_scan_umac_handler { 2602 u8 version; 2603 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2604 struct iwl_mvm_scan_params *params, int type, int uid); 2605 }; 2606 2607 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2608 .version = _ver, \ 2609 .handler = iwl_mvm_scan_umac_v##_ver, \ 2610 } 2611 2612 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2613 /* set the newest version first to shorten the list traverse time */ 2614 IWL_SCAN_UMAC_HANDLER(15), 2615 IWL_SCAN_UMAC_HANDLER(14), 2616 IWL_SCAN_UMAC_HANDLER(12), 2617 }; 2618 2619 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2620 struct ieee80211_vif *vif, 2621 struct iwl_host_cmd *hcmd, 2622 struct iwl_mvm_scan_params *params, 2623 int type) 2624 { 2625 int uid, i, err; 2626 u8 scan_ver; 2627 2628 lockdep_assert_held(&mvm->mutex); 2629 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2630 2631 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2632 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2633 2634 return iwl_mvm_scan_lmac(mvm, vif, params); 2635 } 2636 2637 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2638 if (uid < 0) 2639 return uid; 2640 2641 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2642 2643 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2644 IWL_FW_CMD_VER_UNKNOWN); 2645 2646 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2647 const struct iwl_scan_umac_handler *ver_handler = 2648 &iwl_scan_umac_handlers[i]; 2649 2650 if (ver_handler->version != scan_ver) 2651 continue; 2652 2653 return ver_handler->handler(mvm, vif, params, type, uid); 2654 } 2655 2656 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2657 if (err) 2658 return err; 2659 2660 return uid; 2661 } 2662 2663 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2664 struct ieee80211_vif *current_vif; 2665 bool p2p_go; 2666 enum nl80211_band band; 2667 }; 2668 2669 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2670 struct ieee80211_vif *vif) 2671 { 2672 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2674 2675 /* exclude the given vif */ 2676 if (vif == data->current_vif) 2677 return; 2678 2679 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 2680 mvmvif->phy_ctxt->id < NUM_PHY_CTX && 2681 (data->band == NUM_NL80211_BANDS || 2682 mvmvif->phy_ctxt->channel->band == data->band)) 2683 data->p2p_go = true; 2684 } 2685 2686 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2687 struct ieee80211_vif *vif, 2688 bool low_latency, 2689 enum nl80211_band band) 2690 { 2691 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2692 .current_vif = vif, 2693 .p2p_go = false, 2694 .band = band, 2695 }; 2696 2697 if (!low_latency) 2698 return false; 2699 2700 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2701 IEEE80211_IFACE_ITER_NORMAL, 2702 iwl_mvm_scan_respect_p2p_go_iter, 2703 &data); 2704 2705 return data.p2p_go; 2706 } 2707 2708 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2709 struct ieee80211_vif *vif, 2710 enum nl80211_band band) 2711 { 2712 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2713 2714 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2715 } 2716 2717 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2718 struct ieee80211_vif *vif) 2719 { 2720 bool low_latency = iwl_mvm_low_latency(mvm); 2721 2722 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2723 NUM_NL80211_BANDS); 2724 } 2725 2726 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2727 struct iwl_mvm_scan_params *params, 2728 struct ieee80211_vif *vif) 2729 { 2730 if (iwl_mvm_is_cdb_supported(mvm)) { 2731 params->respect_p2p_go = 2732 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2733 NL80211_BAND_2GHZ); 2734 params->respect_p2p_go_hb = 2735 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2736 NL80211_BAND_5GHZ); 2737 } else { 2738 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2739 } 2740 } 2741 2742 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2743 struct cfg80211_scan_request *req, 2744 struct ieee80211_scan_ies *ies) 2745 { 2746 struct iwl_host_cmd hcmd = { 2747 .len = { iwl_mvm_scan_size(mvm), }, 2748 .data = { mvm->scan_cmd, }, 2749 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2750 }; 2751 struct iwl_mvm_scan_params params = {}; 2752 int ret, uid; 2753 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2754 2755 lockdep_assert_held(&mvm->mutex); 2756 2757 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2758 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2759 return -EBUSY; 2760 } 2761 2762 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2763 if (ret) 2764 return ret; 2765 2766 /* we should have failed registration if scan_cmd was NULL */ 2767 if (WARN_ON(!mvm->scan_cmd)) 2768 return -ENOMEM; 2769 2770 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2771 return -ENOBUFS; 2772 2773 params.n_ssids = req->n_ssids; 2774 params.flags = req->flags; 2775 params.n_channels = req->n_channels; 2776 params.delay = 0; 2777 params.ssids = req->ssids; 2778 params.channels = req->channels; 2779 params.mac_addr = req->mac_addr; 2780 params.mac_addr_mask = req->mac_addr_mask; 2781 params.no_cck = req->no_cck; 2782 params.pass_all = true; 2783 params.n_match_sets = 0; 2784 params.match_sets = NULL; 2785 2786 params.scan_plans = &scan_plan; 2787 params.n_scan_plans = 1; 2788 2789 params.n_6ghz_params = req->n_6ghz_params; 2790 params.scan_6ghz_params = req->scan_6ghz_params; 2791 params.scan_6ghz = req->scan_6ghz; 2792 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2793 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2794 2795 if (req->duration) 2796 params.iter_notif = true; 2797 2798 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2799 2800 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 2801 2802 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2803 IWL_MVM_SCAN_REGULAR); 2804 2805 if (uid < 0) 2806 return uid; 2807 2808 iwl_mvm_pause_tcm(mvm, false); 2809 2810 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2811 if (ret) { 2812 /* If the scan failed, it usually means that the FW was unable 2813 * to allocate the time events. Warn on it, but maybe we 2814 * should try to send the command again with different params. 2815 */ 2816 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2817 iwl_mvm_resume_tcm(mvm); 2818 mvm->scan_uid_status[uid] = 0; 2819 return ret; 2820 } 2821 2822 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2823 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2824 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2825 2826 if (params.enable_6ghz_passive) 2827 mvm->last_6ghz_passive_scan_jiffies = jiffies; 2828 2829 schedule_delayed_work(&mvm->scan_timeout_dwork, 2830 msecs_to_jiffies(SCAN_TIMEOUT)); 2831 2832 return 0; 2833 } 2834 2835 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2836 struct ieee80211_vif *vif, 2837 struct cfg80211_sched_scan_request *req, 2838 struct ieee80211_scan_ies *ies, 2839 int type) 2840 { 2841 struct iwl_host_cmd hcmd = { 2842 .len = { iwl_mvm_scan_size(mvm), }, 2843 .data = { mvm->scan_cmd, }, 2844 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2845 }; 2846 struct iwl_mvm_scan_params params = {}; 2847 int ret, uid; 2848 int i, j; 2849 bool non_psc_included = false; 2850 2851 lockdep_assert_held(&mvm->mutex); 2852 2853 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2854 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2855 return -EBUSY; 2856 } 2857 2858 ret = iwl_mvm_check_running_scans(mvm, type); 2859 if (ret) 2860 return ret; 2861 2862 /* we should have failed registration if scan_cmd was NULL */ 2863 if (WARN_ON(!mvm->scan_cmd)) 2864 return -ENOMEM; 2865 2866 2867 params.n_ssids = req->n_ssids; 2868 params.flags = req->flags; 2869 params.n_channels = req->n_channels; 2870 params.ssids = req->ssids; 2871 params.channels = req->channels; 2872 params.mac_addr = req->mac_addr; 2873 params.mac_addr_mask = req->mac_addr_mask; 2874 params.no_cck = false; 2875 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2876 params.n_match_sets = req->n_match_sets; 2877 params.match_sets = req->match_sets; 2878 if (!req->n_scan_plans) 2879 return -EINVAL; 2880 2881 params.n_scan_plans = req->n_scan_plans; 2882 params.scan_plans = req->scan_plans; 2883 2884 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2885 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 2886 2887 /* In theory, LMAC scans can handle a 32-bit delay, but since 2888 * waiting for over 18 hours to start the scan is a bit silly 2889 * and to keep it aligned with UMAC scans (which only support 2890 * 16-bit delays), trim it down to 16-bits. 2891 */ 2892 if (req->delay > U16_MAX) { 2893 IWL_DEBUG_SCAN(mvm, 2894 "delay value is > 16-bits, set to max possible\n"); 2895 params.delay = U16_MAX; 2896 } else { 2897 params.delay = req->delay; 2898 } 2899 2900 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2901 if (ret) 2902 return ret; 2903 2904 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2905 2906 /* for 6 GHZ band only PSC channels need to be added */ 2907 for (i = 0; i < params.n_channels; i++) { 2908 struct ieee80211_channel *channel = params.channels[i]; 2909 2910 if (channel->band == NL80211_BAND_6GHZ && 2911 !cfg80211_channel_is_psc(channel)) { 2912 non_psc_included = true; 2913 break; 2914 } 2915 } 2916 2917 if (non_psc_included) { 2918 params.channels = kmemdup(params.channels, 2919 sizeof(params.channels[0]) * 2920 params.n_channels, 2921 GFP_KERNEL); 2922 if (!params.channels) 2923 return -ENOMEM; 2924 2925 for (i = j = 0; i < params.n_channels; i++) { 2926 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2927 !cfg80211_channel_is_psc(params.channels[i])) 2928 continue; 2929 params.channels[j++] = params.channels[i]; 2930 } 2931 params.n_channels = j; 2932 } 2933 2934 if (non_psc_included && 2935 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2936 kfree(params.channels); 2937 return -ENOBUFS; 2938 } 2939 2940 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2941 2942 if (non_psc_included) 2943 kfree(params.channels); 2944 if (uid < 0) 2945 return uid; 2946 2947 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2948 if (!ret) { 2949 IWL_DEBUG_SCAN(mvm, 2950 "Sched scan request was sent successfully\n"); 2951 mvm->scan_status |= type; 2952 } else { 2953 /* If the scan failed, it usually means that the FW was unable 2954 * to allocate the time events. Warn on it, but maybe we 2955 * should try to send the command again with different params. 2956 */ 2957 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2958 mvm->scan_uid_status[uid] = 0; 2959 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2960 } 2961 2962 return ret; 2963 } 2964 2965 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2966 struct iwl_rx_cmd_buffer *rxb) 2967 { 2968 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2969 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2970 u32 uid = __le32_to_cpu(notif->uid); 2971 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2972 2973 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2974 return; 2975 2976 /* if the scan is already stopping, we don't need to notify mac80211 */ 2977 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2978 struct cfg80211_scan_info info = { 2979 .aborted = aborted, 2980 .scan_start_tsf = mvm->scan_start, 2981 }; 2982 2983 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2984 ieee80211_scan_completed(mvm->hw, &info); 2985 mvm->scan_vif = NULL; 2986 cancel_delayed_work(&mvm->scan_timeout_dwork); 2987 iwl_mvm_resume_tcm(mvm); 2988 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2989 ieee80211_sched_scan_stopped(mvm->hw); 2990 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2991 } 2992 2993 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2994 IWL_DEBUG_SCAN(mvm, 2995 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2996 uid, mvm->scan_uid_status[uid], 2997 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2998 "completed" : "aborted", 2999 iwl_mvm_ebs_status_str(notif->ebs_status)); 3000 IWL_DEBUG_SCAN(mvm, 3001 "Last line %d, Last iteration %d, Time from last iteration %d\n", 3002 notif->last_schedule, notif->last_iter, 3003 __le32_to_cpu(notif->time_from_last_iter)); 3004 3005 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3006 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3007 mvm->last_ebs_successful = false; 3008 3009 mvm->scan_uid_status[uid] = 0; 3010 } 3011 3012 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3013 struct iwl_rx_cmd_buffer *rxb) 3014 { 3015 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3016 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3017 3018 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3019 3020 IWL_DEBUG_SCAN(mvm, 3021 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3022 notif->status, notif->scanned_channels); 3023 3024 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3025 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3026 ieee80211_sched_scan_results(mvm->hw); 3027 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3028 } 3029 3030 IWL_DEBUG_SCAN(mvm, 3031 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3032 mvm->scan_start); 3033 } 3034 3035 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 3036 { 3037 struct iwl_umac_scan_abort cmd = {}; 3038 int uid, ret; 3039 3040 lockdep_assert_held(&mvm->mutex); 3041 3042 /* We should always get a valid index here, because we already 3043 * checked that this type of scan was running in the generic 3044 * code. 3045 */ 3046 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3047 if (WARN_ON_ONCE(uid < 0)) 3048 return uid; 3049 3050 cmd.uid = cpu_to_le32(uid); 3051 3052 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3053 3054 ret = iwl_mvm_send_cmd_pdu(mvm, 3055 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3056 0, sizeof(cmd), &cmd); 3057 if (!ret) 3058 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3059 3060 return ret; 3061 } 3062 3063 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3064 { 3065 struct iwl_notification_wait wait_scan_done; 3066 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3067 SCAN_OFFLOAD_COMPLETE, }; 3068 int ret; 3069 3070 lockdep_assert_held(&mvm->mutex); 3071 3072 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3073 scan_done_notif, 3074 ARRAY_SIZE(scan_done_notif), 3075 NULL, NULL); 3076 3077 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3078 3079 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3080 ret = iwl_mvm_umac_scan_abort(mvm, type); 3081 else 3082 ret = iwl_mvm_lmac_scan_abort(mvm); 3083 3084 if (ret) { 3085 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3086 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3087 return ret; 3088 } 3089 3090 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3091 1 * HZ); 3092 } 3093 3094 static int iwl_scan_req_umac_get_size(u8 scan_ver) 3095 { 3096 switch (scan_ver) { 3097 case 12: 3098 return sizeof(struct iwl_scan_req_umac_v12); 3099 case 14: 3100 case 15: 3101 return sizeof(struct iwl_scan_req_umac_v15); 3102 } 3103 3104 return 0; 3105 } 3106 3107 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 3108 { 3109 int base_size, tail_size; 3110 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3111 IWL_FW_CMD_VER_UNKNOWN); 3112 3113 base_size = iwl_scan_req_umac_get_size(scan_ver); 3114 if (base_size) 3115 return base_size; 3116 3117 3118 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3119 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3120 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3121 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3122 else if (iwl_mvm_cdb_scan_api(mvm)) 3123 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3124 else 3125 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3126 3127 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3128 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3129 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3130 else 3131 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3132 3133 return base_size + 3134 sizeof(struct iwl_scan_channel_cfg_umac) * 3135 mvm->fw->ucode_capa.n_scan_channels + 3136 tail_size; 3137 } 3138 return sizeof(struct iwl_scan_req_lmac) + 3139 sizeof(struct iwl_scan_channel_cfg_lmac) * 3140 mvm->fw->ucode_capa.n_scan_channels + 3141 sizeof(struct iwl_scan_probe_req_v1); 3142 } 3143 3144 /* 3145 * This function is used in nic restart flow, to inform mac80211 about scans 3146 * that was aborted by restart flow or by an assert. 3147 */ 3148 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3149 { 3150 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3151 int uid, i; 3152 3153 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3154 if (uid >= 0) { 3155 struct cfg80211_scan_info info = { 3156 .aborted = true, 3157 }; 3158 3159 cancel_delayed_work(&mvm->scan_timeout_dwork); 3160 3161 ieee80211_scan_completed(mvm->hw, &info); 3162 mvm->scan_uid_status[uid] = 0; 3163 } 3164 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3165 if (uid >= 0) { 3166 /* Sched scan will be restarted by mac80211 in 3167 * restart_hw, so do not report if FW is about to be 3168 * restarted. 3169 */ 3170 if (!mvm->fw_restart) 3171 ieee80211_sched_scan_stopped(mvm->hw); 3172 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3173 mvm->scan_uid_status[uid] = 0; 3174 } 3175 uid = iwl_mvm_scan_uid_by_status(mvm, 3176 IWL_MVM_SCAN_STOPPING_REGULAR); 3177 if (uid >= 0) 3178 mvm->scan_uid_status[uid] = 0; 3179 3180 uid = iwl_mvm_scan_uid_by_status(mvm, 3181 IWL_MVM_SCAN_STOPPING_SCHED); 3182 if (uid >= 0) 3183 mvm->scan_uid_status[uid] = 0; 3184 3185 /* We shouldn't have any UIDs still set. Loop over all the 3186 * UIDs to make sure there's nothing left there and warn if 3187 * any is found. 3188 */ 3189 for (i = 0; i < mvm->max_scans; i++) { 3190 if (WARN_ONCE(mvm->scan_uid_status[i], 3191 "UMAC scan UID %d status was not cleaned\n", 3192 i)) 3193 mvm->scan_uid_status[i] = 0; 3194 } 3195 } else { 3196 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3197 struct cfg80211_scan_info info = { 3198 .aborted = true, 3199 }; 3200 3201 cancel_delayed_work(&mvm->scan_timeout_dwork); 3202 ieee80211_scan_completed(mvm->hw, &info); 3203 } 3204 3205 /* Sched scan will be restarted by mac80211 in 3206 * restart_hw, so do not report if FW is about to be 3207 * restarted. 3208 */ 3209 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3210 !mvm->fw_restart) { 3211 ieee80211_sched_scan_stopped(mvm->hw); 3212 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3213 } 3214 } 3215 } 3216 3217 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3218 { 3219 int ret; 3220 3221 if (!(mvm->scan_status & type)) 3222 return 0; 3223 3224 if (iwl_mvm_is_radio_killed(mvm)) { 3225 ret = 0; 3226 goto out; 3227 } 3228 3229 ret = iwl_mvm_scan_stop_wait(mvm, type); 3230 if (!ret) 3231 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3232 out: 3233 /* Clear the scan status so the next scan requests will 3234 * succeed and mark the scan as stopping, so that the Rx 3235 * handler doesn't do anything, as the scan was stopped from 3236 * above. 3237 */ 3238 mvm->scan_status &= ~type; 3239 3240 if (type == IWL_MVM_SCAN_REGULAR) { 3241 cancel_delayed_work(&mvm->scan_timeout_dwork); 3242 if (notify) { 3243 struct cfg80211_scan_info info = { 3244 .aborted = true, 3245 }; 3246 3247 ieee80211_scan_completed(mvm->hw, &info); 3248 } 3249 } else if (notify) { 3250 ieee80211_sched_scan_stopped(mvm->hw); 3251 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3252 } 3253 3254 return ret; 3255 } 3256