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