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