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