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