1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <net/mac80211.h> 9 #include <linux/crc32.h> 10 11 #include "mvm.h" 12 #include "fw/api/scan.h" 13 #include "iwl-io.h" 14 15 #define IWL_DENSE_EBS_SCAN_RATIO 5 16 #define IWL_SPARSE_EBS_SCAN_RATIO 1 17 18 #define IWL_SCAN_DWELL_ACTIVE 10 19 #define IWL_SCAN_DWELL_PASSIVE 110 20 #define IWL_SCAN_DWELL_FRAGMENTED 44 21 #define IWL_SCAN_DWELL_EXTENDED 90 22 #define IWL_SCAN_NUM_OF_FRAGS 3 23 #define IWL_SCAN_LAST_2_4_CHN 14 24 25 /* adaptive dwell max budget time [TU] for full scan */ 26 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 27 /* adaptive dwell max budget time [TU] for directed scan */ 28 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 29 /* adaptive dwell default high band APs number */ 30 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 31 /* adaptive dwell default low band APs number */ 32 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 33 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 34 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 35 /* number of scan channels */ 36 #define IWL_SCAN_NUM_CHANNELS 112 37 /* adaptive dwell number of APs override mask for p2p friendly GO */ 38 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 39 /* adaptive dwell number of APs override mask for social channels */ 40 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 41 /* adaptive dwell number of APs override for p2p friendly GO channels */ 42 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 43 /* adaptive dwell number of APs override for social channels */ 44 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 45 46 /* minimal number of 2GHz and 5GHz channels in the regular scan request */ 47 #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 48 49 struct iwl_mvm_scan_timing_params { 50 u32 suspend_time; 51 u32 max_out_time; 52 }; 53 54 static struct iwl_mvm_scan_timing_params scan_timing[] = { 55 [IWL_SCAN_TYPE_UNASSOC] = { 56 .suspend_time = 0, 57 .max_out_time = 0, 58 }, 59 [IWL_SCAN_TYPE_WILD] = { 60 .suspend_time = 30, 61 .max_out_time = 120, 62 }, 63 [IWL_SCAN_TYPE_MILD] = { 64 .suspend_time = 120, 65 .max_out_time = 120, 66 }, 67 [IWL_SCAN_TYPE_FRAGMENTED] = { 68 .suspend_time = 95, 69 .max_out_time = 44, 70 }, 71 [IWL_SCAN_TYPE_FAST_BALANCE] = { 72 .suspend_time = 30, 73 .max_out_time = 37, 74 }, 75 }; 76 77 struct iwl_mvm_scan_params { 78 /* For CDB this is low band scan type, for non-CDB - type. */ 79 enum iwl_mvm_scan_type type; 80 enum iwl_mvm_scan_type hb_type; 81 u32 n_channels; 82 u16 delay; 83 int n_ssids; 84 struct cfg80211_ssid *ssids; 85 struct ieee80211_channel **channels; 86 u32 flags; 87 u8 *mac_addr; 88 u8 *mac_addr_mask; 89 bool no_cck; 90 bool pass_all; 91 int n_match_sets; 92 struct iwl_scan_probe_req preq; 93 struct cfg80211_match_set *match_sets; 94 int n_scan_plans; 95 struct cfg80211_sched_scan_plan *scan_plans; 96 bool iter_notif; 97 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 98 u32 n_6ghz_params; 99 bool scan_6ghz; 100 bool enable_6ghz_passive; 101 }; 102 103 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 104 { 105 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 106 107 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 108 return (void *)&cmd->v8.data; 109 110 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 111 return (void *)&cmd->v7.data; 112 113 if (iwl_mvm_cdb_scan_api(mvm)) 114 return (void *)&cmd->v6.data; 115 116 return (void *)&cmd->v1.data; 117 } 118 119 static inline struct iwl_scan_umac_chan_param * 120 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 121 { 122 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 123 124 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 125 return &cmd->v8.channel; 126 127 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 128 return &cmd->v7.channel; 129 130 if (iwl_mvm_cdb_scan_api(mvm)) 131 return &cmd->v6.channel; 132 133 return &cmd->v1.channel; 134 } 135 136 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 137 { 138 if (mvm->scan_rx_ant != ANT_NONE) 139 return mvm->scan_rx_ant; 140 return iwl_mvm_get_valid_rx_ant(mvm); 141 } 142 143 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 144 { 145 u16 rx_chain; 146 u8 rx_ant; 147 148 rx_ant = iwl_mvm_scan_rx_ant(mvm); 149 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 150 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 151 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 152 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 153 return cpu_to_le16(rx_chain); 154 } 155 156 static inline __le32 157 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 158 bool no_cck) 159 { 160 u32 tx_ant; 161 162 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 163 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 164 165 if (band == NL80211_BAND_2GHZ && !no_cck) 166 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | 167 tx_ant); 168 else 169 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 170 } 171 172 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, 173 struct ieee80211_vif *vif) 174 { 175 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 176 int *global_cnt = data; 177 178 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 179 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 180 *global_cnt += 1; 181 } 182 183 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 184 { 185 return mvm->tcm.result.global_load; 186 } 187 188 static enum iwl_mvm_traffic_load 189 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 190 { 191 return mvm->tcm.result.band_load[band]; 192 } 193 194 struct iwl_is_dcm_with_go_iterator_data { 195 struct ieee80211_vif *current_vif; 196 bool is_dcm_with_p2p_go; 197 }; 198 199 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, 200 struct ieee80211_vif *vif) 201 { 202 struct iwl_is_dcm_with_go_iterator_data *data = _data; 203 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 204 struct iwl_mvm_vif *curr_mvmvif = 205 iwl_mvm_vif_from_mac80211(data->current_vif); 206 207 /* exclude the given vif */ 208 if (vif == data->current_vif) 209 return; 210 211 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 212 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 213 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 214 data->is_dcm_with_p2p_go = true; 215 } 216 217 static enum 218 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 219 struct ieee80211_vif *vif, 220 enum iwl_mvm_traffic_load load, 221 bool low_latency) 222 { 223 int global_cnt = 0; 224 225 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 226 IEEE80211_IFACE_ITER_NORMAL, 227 iwl_mvm_scan_condition_iterator, 228 &global_cnt); 229 if (!global_cnt) 230 return IWL_SCAN_TYPE_UNASSOC; 231 232 if (fw_has_api(&mvm->fw->ucode_capa, 233 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 234 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 235 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 236 return IWL_SCAN_TYPE_FRAGMENTED; 237 238 /* in case of DCM with GO where BSS DTIM interval < 220msec 239 * set all scan requests as fast-balance scan 240 * */ 241 if (vif && vif->type == NL80211_IFTYPE_STATION && 242 vif->bss_conf.dtim_period < 220) { 243 struct iwl_is_dcm_with_go_iterator_data data = { 244 .current_vif = vif, 245 .is_dcm_with_p2p_go = false, 246 }; 247 248 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 249 IEEE80211_IFACE_ITER_NORMAL, 250 iwl_mvm_is_dcm_with_go_iterator, 251 &data); 252 if (data.is_dcm_with_p2p_go) 253 return IWL_SCAN_TYPE_FAST_BALANCE; 254 } 255 } 256 257 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 258 return IWL_SCAN_TYPE_MILD; 259 260 return IWL_SCAN_TYPE_WILD; 261 } 262 263 static enum 264 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 265 struct ieee80211_vif *vif) 266 { 267 enum iwl_mvm_traffic_load load; 268 bool low_latency; 269 270 load = iwl_mvm_get_traffic_load(mvm); 271 low_latency = iwl_mvm_low_latency(mvm); 272 273 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 274 } 275 276 static enum 277 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 278 struct ieee80211_vif *vif, 279 enum nl80211_band band) 280 { 281 enum iwl_mvm_traffic_load load; 282 bool low_latency; 283 284 load = iwl_mvm_get_traffic_load_band(mvm, band); 285 low_latency = iwl_mvm_low_latency_band(mvm, band); 286 287 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 288 } 289 290 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 291 { 292 /* require rrm scan whenever the fw supports it */ 293 return fw_has_capa(&mvm->fw->ucode_capa, 294 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 295 } 296 297 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 298 { 299 int max_probe_len; 300 301 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 302 303 /* we create the 802.11 header and SSID element */ 304 max_probe_len -= 24 + 2; 305 306 /* DS parameter set element is added on 2.4GHZ band if required */ 307 if (iwl_mvm_rrm_scan_needed(mvm)) 308 max_probe_len -= 3; 309 310 return max_probe_len; 311 } 312 313 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 314 { 315 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 316 317 /* TODO: [BUG] This function should return the maximum allowed size of 318 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 319 * in the same command. So the correct implementation of this function 320 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 321 * command has only 512 bytes and it would leave us with about 240 322 * bytes for scan IEs, which is clearly not enough. So meanwhile 323 * we will report an incorrect value. This may result in a failure to 324 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 325 * functions with -ENOBUFS, if a large enough probe will be provided. 326 */ 327 return max_ie_len; 328 } 329 330 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 331 struct iwl_rx_cmd_buffer *rxb) 332 { 333 struct iwl_rx_packet *pkt = rxb_addr(rxb); 334 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 335 336 IWL_DEBUG_SCAN(mvm, 337 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 338 notif->status, notif->scanned_channels); 339 340 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 341 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 342 ieee80211_sched_scan_results(mvm->hw); 343 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 344 } 345 } 346 347 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 348 struct iwl_rx_cmd_buffer *rxb) 349 { 350 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 351 ieee80211_sched_scan_results(mvm->hw); 352 } 353 354 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 355 { 356 switch (status) { 357 case IWL_SCAN_EBS_SUCCESS: 358 return "successful"; 359 case IWL_SCAN_EBS_INACTIVE: 360 return "inactive"; 361 case IWL_SCAN_EBS_FAILED: 362 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 363 default: 364 return "failed"; 365 } 366 } 367 368 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 369 struct iwl_rx_cmd_buffer *rxb) 370 { 371 struct iwl_rx_packet *pkt = rxb_addr(rxb); 372 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 373 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 374 375 /* If this happens, the firmware has mistakenly sent an LMAC 376 * notification during UMAC scans -- warn and ignore it. 377 */ 378 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 379 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 380 return; 381 382 /* scan status must be locked for proper checking */ 383 lockdep_assert_held(&mvm->mutex); 384 385 /* We first check if we were stopping a scan, in which case we 386 * just clear the stopping flag. Then we check if it was a 387 * firmware initiated stop, in which case we need to inform 388 * mac80211. 389 * Note that we can have a stopping and a running scan 390 * simultaneously, but we can't have two different types of 391 * scans stopping or running at the same time (since LMAC 392 * doesn't support it). 393 */ 394 395 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 396 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 397 398 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 399 aborted ? "aborted" : "completed", 400 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 401 IWL_DEBUG_SCAN(mvm, 402 "Last line %d, Last iteration %d, Time after last iteration %d\n", 403 scan_notif->last_schedule_line, 404 scan_notif->last_schedule_iteration, 405 __le32_to_cpu(scan_notif->time_after_last_iter)); 406 407 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 408 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 409 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 410 aborted ? "aborted" : "completed", 411 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 412 413 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 414 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 415 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 416 417 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 418 aborted ? "aborted" : "completed", 419 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 420 IWL_DEBUG_SCAN(mvm, 421 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 422 scan_notif->last_schedule_line, 423 scan_notif->last_schedule_iteration, 424 __le32_to_cpu(scan_notif->time_after_last_iter)); 425 426 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 427 ieee80211_sched_scan_stopped(mvm->hw); 428 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 429 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 430 struct cfg80211_scan_info info = { 431 .aborted = aborted, 432 }; 433 434 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 435 aborted ? "aborted" : "completed", 436 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 437 438 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 439 ieee80211_scan_completed(mvm->hw, &info); 440 cancel_delayed_work(&mvm->scan_timeout_dwork); 441 iwl_mvm_resume_tcm(mvm); 442 } else { 443 IWL_ERR(mvm, 444 "got scan complete notification but no scan is running\n"); 445 } 446 447 mvm->last_ebs_successful = 448 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 449 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 450 } 451 452 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 453 { 454 int i; 455 456 for (i = 0; i < PROBE_OPTION_MAX; i++) { 457 if (!ssid_list[i].len) 458 break; 459 if (ssid_list[i].len == ssid_len && 460 !memcmp(ssid_list->ssid, ssid, ssid_len)) 461 return i; 462 } 463 return -1; 464 } 465 466 /* We insert the SSIDs in an inverted order, because the FW will 467 * invert it back. 468 */ 469 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 470 struct iwl_ssid_ie *ssids, 471 u32 *ssid_bitmap) 472 { 473 int i, j; 474 int index; 475 u32 tmp_bitmap = 0; 476 477 /* 478 * copy SSIDs from match list. 479 * iwl_config_sched_scan_profiles() uses the order of these ssids to 480 * config match list. 481 */ 482 for (i = 0, j = params->n_match_sets - 1; 483 j >= 0 && i < PROBE_OPTION_MAX; 484 i++, j--) { 485 /* skip empty SSID matchsets */ 486 if (!params->match_sets[j].ssid.ssid_len) 487 continue; 488 ssids[i].id = WLAN_EID_SSID; 489 ssids[i].len = params->match_sets[j].ssid.ssid_len; 490 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 491 ssids[i].len); 492 } 493 494 /* add SSIDs from scan SSID list */ 495 for (j = params->n_ssids - 1; 496 j >= 0 && i < PROBE_OPTION_MAX; 497 i++, j--) { 498 index = iwl_ssid_exist(params->ssids[j].ssid, 499 params->ssids[j].ssid_len, 500 ssids); 501 if (index < 0) { 502 ssids[i].id = WLAN_EID_SSID; 503 ssids[i].len = params->ssids[j].ssid_len; 504 memcpy(ssids[i].ssid, params->ssids[j].ssid, 505 ssids[i].len); 506 tmp_bitmap |= BIT(i); 507 } else { 508 tmp_bitmap |= BIT(index); 509 } 510 } 511 if (ssid_bitmap) 512 *ssid_bitmap = tmp_bitmap; 513 } 514 515 static int 516 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 517 struct cfg80211_sched_scan_request *req) 518 { 519 struct iwl_scan_offload_profile *profile; 520 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 521 struct iwl_scan_offload_blocklist *blocklist; 522 struct iwl_scan_offload_profile_cfg_data *data; 523 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 524 int profile_cfg_size = sizeof(*data) + 525 sizeof(*profile) * max_profiles; 526 struct iwl_host_cmd cmd = { 527 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 528 .len[1] = profile_cfg_size, 529 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 530 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 531 }; 532 int blocklist_len; 533 int i; 534 int ret; 535 536 if (WARN_ON(req->n_match_sets > max_profiles)) 537 return -EIO; 538 539 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 540 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 541 else 542 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 543 544 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 545 if (!blocklist) 546 return -ENOMEM; 547 548 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 549 if (!profile_cfg_v1) { 550 ret = -ENOMEM; 551 goto free_blocklist; 552 } 553 554 cmd.data[0] = blocklist; 555 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 556 cmd.data[1] = profile_cfg_v1; 557 558 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 559 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 560 struct iwl_scan_offload_profile_cfg *profile_cfg = 561 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 562 563 data = &profile_cfg->data; 564 } else { 565 data = &profile_cfg_v1->data; 566 } 567 568 /* No blocklist configuration */ 569 data->num_profiles = req->n_match_sets; 570 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 571 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 572 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 573 574 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 575 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 576 577 for (i = 0; i < req->n_match_sets; i++) { 578 profile = &profile_cfg_v1->profiles[i]; 579 profile->ssid_index = i; 580 /* Support any cipher and auth algorithm */ 581 profile->unicast_cipher = 0xff; 582 profile->auth_alg = 0xff; 583 profile->network_type = IWL_NETWORK_TYPE_ANY; 584 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 585 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 586 } 587 588 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 589 590 ret = iwl_mvm_send_cmd(mvm, &cmd); 591 kfree(profile_cfg_v1); 592 free_blocklist: 593 kfree(blocklist); 594 595 return ret; 596 } 597 598 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 599 struct cfg80211_sched_scan_request *req) 600 { 601 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 602 IWL_DEBUG_SCAN(mvm, 603 "Sending scheduled scan with filtering, n_match_sets %d\n", 604 req->n_match_sets); 605 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 606 return false; 607 } 608 609 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 610 611 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 612 return true; 613 } 614 615 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 616 { 617 int ret; 618 struct iwl_host_cmd cmd = { 619 .id = SCAN_OFFLOAD_ABORT_CMD, 620 }; 621 u32 status = CAN_ABORT_STATUS; 622 623 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 624 if (ret) 625 return ret; 626 627 if (status != CAN_ABORT_STATUS) { 628 /* 629 * The scan abort will return 1 for success or 630 * 2 for "failure". A failure condition can be 631 * due to simply not being in an active scan which 632 * can occur if we send the scan abort before the 633 * microcode has notified us that a scan is completed. 634 */ 635 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 636 ret = -ENOENT; 637 } 638 639 return ret; 640 } 641 642 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 643 struct iwl_scan_req_tx_cmd *tx_cmd, 644 bool no_cck) 645 { 646 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 647 TX_CMD_FLG_BT_DIS); 648 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 649 NL80211_BAND_2GHZ, 650 no_cck); 651 652 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 653 ADD_STA, 654 0) < 12) { 655 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 656 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 657 658 /* 659 * Fw doesn't use this sta anymore, pending deprecation via HOST API 660 * change 661 */ 662 } else { 663 tx_cmd[0].sta_id = 0xff; 664 tx_cmd[1].sta_id = 0xff; 665 } 666 667 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 668 TX_CMD_FLG_BT_DIS); 669 670 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 671 NL80211_BAND_5GHZ, 672 no_cck); 673 } 674 675 static void 676 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 677 struct ieee80211_channel **channels, 678 int n_channels, u32 ssid_bitmap, 679 struct iwl_scan_req_lmac *cmd) 680 { 681 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 682 int i; 683 684 for (i = 0; i < n_channels; i++) { 685 channel_cfg[i].channel_num = 686 cpu_to_le16(channels[i]->hw_value); 687 channel_cfg[i].iter_count = cpu_to_le16(1); 688 channel_cfg[i].iter_interval = 0; 689 channel_cfg[i].flags = 690 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 691 ssid_bitmap); 692 } 693 } 694 695 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 696 size_t len, u8 *const pos) 697 { 698 static const u8 before_ds_params[] = { 699 WLAN_EID_SSID, 700 WLAN_EID_SUPP_RATES, 701 WLAN_EID_REQUEST, 702 WLAN_EID_EXT_SUPP_RATES, 703 }; 704 size_t offs; 705 u8 *newpos = pos; 706 707 if (!iwl_mvm_rrm_scan_needed(mvm)) { 708 memcpy(newpos, ies, len); 709 return newpos + len; 710 } 711 712 offs = ieee80211_ie_split(ies, len, 713 before_ds_params, 714 ARRAY_SIZE(before_ds_params), 715 0); 716 717 memcpy(newpos, ies, offs); 718 newpos += offs; 719 720 /* Add a placeholder for DS Parameter Set element */ 721 *newpos++ = WLAN_EID_DS_PARAMS; 722 *newpos++ = 1; 723 *newpos++ = 0; 724 725 memcpy(newpos, ies + offs, len - offs); 726 newpos += len - offs; 727 728 return newpos; 729 } 730 731 #define WFA_TPC_IE_LEN 9 732 733 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 734 { 735 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 736 pos[1] = WFA_TPC_IE_LEN - 2; 737 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 738 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 739 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 740 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 741 pos[6] = 0; 742 /* pos[7] - tx power will be inserted by the FW */ 743 pos[7] = 0; 744 pos[8] = 0; 745 } 746 747 static void 748 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 749 struct ieee80211_scan_ies *ies, 750 struct iwl_mvm_scan_params *params) 751 { 752 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 753 u8 *pos, *newpos; 754 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 755 params->mac_addr : NULL; 756 757 /* 758 * Unfortunately, right now the offload scan doesn't support randomising 759 * within the firmware, so until the firmware API is ready we implement 760 * it in the driver. This means that the scan iterations won't really be 761 * random, only when it's restarted, but at least that helps a bit. 762 */ 763 if (mac_addr) 764 get_random_mask_addr(frame->sa, mac_addr, 765 params->mac_addr_mask); 766 else 767 memcpy(frame->sa, vif->addr, ETH_ALEN); 768 769 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 770 eth_broadcast_addr(frame->da); 771 eth_broadcast_addr(frame->bssid); 772 frame->seq_ctrl = 0; 773 774 pos = frame->u.probe_req.variable; 775 *pos++ = WLAN_EID_SSID; 776 *pos++ = 0; 777 778 params->preq.mac_header.offset = 0; 779 params->preq.mac_header.len = cpu_to_le16(24 + 2); 780 781 /* Insert ds parameter set element on 2.4 GHz band */ 782 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 783 ies->ies[NL80211_BAND_2GHZ], 784 ies->len[NL80211_BAND_2GHZ], 785 pos); 786 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 787 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 788 pos = newpos; 789 790 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 791 ies->len[NL80211_BAND_5GHZ]); 792 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 793 params->preq.band_data[1].len = 794 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 795 pos += ies->len[NL80211_BAND_5GHZ]; 796 797 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 798 ies->len[NL80211_BAND_6GHZ]); 799 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 800 params->preq.band_data[2].len = 801 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 802 pos += ies->len[NL80211_BAND_6GHZ]; 803 memcpy(pos, ies->common_ies, ies->common_ie_len); 804 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 805 806 if (iwl_mvm_rrm_scan_needed(mvm) && 807 !fw_has_capa(&mvm->fw->ucode_capa, 808 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 809 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 810 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 811 WFA_TPC_IE_LEN); 812 } else { 813 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 814 } 815 } 816 817 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 818 struct iwl_scan_req_lmac *cmd, 819 struct iwl_mvm_scan_params *params) 820 { 821 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 822 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 823 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 824 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 825 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 826 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 827 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 828 } 829 830 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 831 struct ieee80211_scan_ies *ies, 832 int n_channels) 833 { 834 return ((n_ssids <= PROBE_OPTION_MAX) && 835 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 836 (ies->common_ie_len + 837 ies->len[NL80211_BAND_2GHZ] + 838 ies->len[NL80211_BAND_5GHZ] <= 839 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 840 } 841 842 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 843 struct ieee80211_vif *vif) 844 { 845 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 846 bool low_latency; 847 848 if (iwl_mvm_is_cdb_supported(mvm)) 849 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 850 else 851 low_latency = iwl_mvm_low_latency(mvm); 852 853 /* We can only use EBS if: 854 * 1. the feature is supported; 855 * 2. the last EBS was successful; 856 * 3. if only single scan, the single scan EBS API is supported; 857 * 4. it's not a p2p find operation. 858 * 5. we are not in low latency mode, 859 * or if fragmented ebs is supported by the FW 860 */ 861 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 862 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 863 vif->type != NL80211_IFTYPE_P2P_DEVICE && 864 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 865 } 866 867 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 868 { 869 return params->n_scan_plans == 1 && 870 params->scan_plans[0].iterations == 1; 871 } 872 873 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 874 { 875 return (type == IWL_SCAN_TYPE_FRAGMENTED || 876 type == IWL_SCAN_TYPE_FAST_BALANCE); 877 } 878 879 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 880 struct iwl_mvm_scan_params *params, 881 struct ieee80211_vif *vif) 882 { 883 int flags = 0; 884 885 if (params->n_ssids == 0) 886 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 887 888 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 889 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 890 891 if (iwl_mvm_is_scan_fragmented(params->type)) 892 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 893 894 if (iwl_mvm_rrm_scan_needed(mvm) && 895 fw_has_capa(&mvm->fw->ucode_capa, 896 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 897 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 898 899 if (params->pass_all) 900 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 901 else 902 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 903 904 #ifdef CONFIG_IWLWIFI_DEBUGFS 905 if (mvm->scan_iter_notif_enabled) 906 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 907 #endif 908 909 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 910 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 911 912 if (iwl_mvm_is_regular_scan(params) && 913 vif->type != NL80211_IFTYPE_P2P_DEVICE && 914 !iwl_mvm_is_scan_fragmented(params->type)) 915 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 916 917 return flags; 918 } 919 920 static void 921 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 922 struct iwl_scan_probe_req *src_p_req) 923 { 924 int i; 925 926 p_req->mac_header = src_p_req->mac_header; 927 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 928 p_req->band_data[i] = src_p_req->band_data[i]; 929 p_req->common_data = src_p_req->common_data; 930 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 931 } 932 933 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 934 struct iwl_mvm_scan_params *params) 935 { 936 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 937 struct iwl_scan_probe_req_v1 *preq = 938 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 939 mvm->fw->ucode_capa.n_scan_channels); 940 u32 ssid_bitmap = 0; 941 int i; 942 u8 band; 943 944 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 945 return -EINVAL; 946 947 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 948 949 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 950 cmd->iter_num = cpu_to_le32(1); 951 cmd->n_channels = (u8)params->n_channels; 952 953 cmd->delay = cpu_to_le32(params->delay); 954 955 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 956 vif)); 957 958 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 959 cmd->flags = cpu_to_le32(band); 960 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 961 MAC_FILTER_IN_BEACON); 962 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 963 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 964 965 /* this API uses bits 1-20 instead of 0-19 */ 966 ssid_bitmap <<= 1; 967 968 for (i = 0; i < params->n_scan_plans; i++) { 969 struct cfg80211_sched_scan_plan *scan_plan = 970 ¶ms->scan_plans[i]; 971 972 cmd->schedule[i].delay = 973 cpu_to_le16(scan_plan->interval); 974 cmd->schedule[i].iterations = scan_plan->iterations; 975 cmd->schedule[i].full_scan_mul = 1; 976 } 977 978 /* 979 * If the number of iterations of the last scan plan is set to 980 * zero, it should run infinitely. However, this is not always the case. 981 * For example, when regular scan is requested the driver sets one scan 982 * plan with one iteration. 983 */ 984 if (!cmd->schedule[i - 1].iterations) 985 cmd->schedule[i - 1].iterations = 0xff; 986 987 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 988 cmd->channel_opt[0].flags = 989 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 990 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 991 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 992 cmd->channel_opt[0].non_ebs_ratio = 993 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 994 cmd->channel_opt[1].flags = 995 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 996 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 997 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 998 cmd->channel_opt[1].non_ebs_ratio = 999 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1000 } 1001 1002 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1003 params->n_channels, ssid_bitmap, cmd); 1004 1005 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1006 1007 return 0; 1008 } 1009 1010 static int rate_to_scan_rate_flag(unsigned int rate) 1011 { 1012 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1013 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1014 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1015 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1016 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1017 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1018 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1019 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1020 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1021 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1022 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1023 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1024 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1025 }; 1026 1027 return rate_to_scan_rate[rate]; 1028 } 1029 1030 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1031 { 1032 struct ieee80211_supported_band *band; 1033 unsigned int rates = 0; 1034 int i; 1035 1036 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1037 for (i = 0; i < band->n_bitrates; i++) 1038 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1039 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1040 for (i = 0; i < band->n_bitrates; i++) 1041 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1042 1043 /* Set both basic rates and supported rates */ 1044 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1045 1046 return cpu_to_le32(rates); 1047 } 1048 1049 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1050 struct iwl_scan_dwell *dwell) 1051 { 1052 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1053 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1054 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1055 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1056 } 1057 1058 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1059 u32 max_channels) 1060 { 1061 struct ieee80211_supported_band *band; 1062 int i, j = 0; 1063 1064 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1065 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1066 channels[j] = band->channels[i].hw_value; 1067 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1068 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1069 channels[j] = band->channels[i].hw_value; 1070 } 1071 1072 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1073 u32 flags, u8 channel_flags, 1074 u32 max_channels) 1075 { 1076 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1077 struct iwl_scan_config_v1 *cfg = config; 1078 1079 cfg->flags = cpu_to_le32(flags); 1080 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1081 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1082 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1083 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1084 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1085 1086 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1087 1088 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1089 1090 /* This function should not be called when using ADD_STA ver >=12 */ 1091 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1092 ADD_STA, 0) >= 12); 1093 1094 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1095 cfg->channel_flags = channel_flags; 1096 1097 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1098 } 1099 1100 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1101 u32 flags, u8 channel_flags, 1102 u32 max_channels) 1103 { 1104 struct iwl_scan_config_v2 *cfg = config; 1105 1106 cfg->flags = cpu_to_le32(flags); 1107 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1108 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1109 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1110 1111 if (iwl_mvm_is_cdb_supported(mvm)) { 1112 enum iwl_mvm_scan_type lb_type, hb_type; 1113 1114 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1115 NL80211_BAND_2GHZ); 1116 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1117 NL80211_BAND_5GHZ); 1118 1119 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1120 cpu_to_le32(scan_timing[lb_type].max_out_time); 1121 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1122 cpu_to_le32(scan_timing[lb_type].suspend_time); 1123 1124 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1125 cpu_to_le32(scan_timing[hb_type].max_out_time); 1126 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1127 cpu_to_le32(scan_timing[hb_type].suspend_time); 1128 } else { 1129 enum iwl_mvm_scan_type type = 1130 iwl_mvm_get_scan_type(mvm, NULL); 1131 1132 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1133 cpu_to_le32(scan_timing[type].max_out_time); 1134 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1135 cpu_to_le32(scan_timing[type].suspend_time); 1136 } 1137 1138 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1139 1140 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1141 1142 /* This function should not be called when using ADD_STA ver >=12 */ 1143 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1144 ADD_STA, 0) >= 12); 1145 1146 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1147 cfg->channel_flags = channel_flags; 1148 1149 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1150 } 1151 1152 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1153 { 1154 void *cfg; 1155 int ret, cmd_size; 1156 struct iwl_host_cmd cmd = { 1157 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1158 }; 1159 enum iwl_mvm_scan_type type; 1160 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1161 int num_channels = 1162 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1163 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1164 u32 flags; 1165 u8 channel_flags; 1166 1167 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1168 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1169 1170 if (iwl_mvm_is_cdb_supported(mvm)) { 1171 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1172 NL80211_BAND_2GHZ); 1173 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1174 NL80211_BAND_5GHZ); 1175 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1176 return 0; 1177 } else { 1178 type = iwl_mvm_get_scan_type(mvm, NULL); 1179 if (type == mvm->scan_type) 1180 return 0; 1181 } 1182 1183 if (iwl_mvm_cdb_scan_api(mvm)) 1184 cmd_size = sizeof(struct iwl_scan_config_v2); 1185 else 1186 cmd_size = sizeof(struct iwl_scan_config_v1); 1187 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1188 1189 cfg = kzalloc(cmd_size, GFP_KERNEL); 1190 if (!cfg) 1191 return -ENOMEM; 1192 1193 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1194 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1195 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1196 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1197 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1198 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1199 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1200 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1201 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1202 SCAN_CONFIG_N_CHANNELS(num_channels) | 1203 (iwl_mvm_is_scan_fragmented(type) ? 1204 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1205 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1206 1207 channel_flags = IWL_CHANNEL_FLAG_EBS | 1208 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1209 IWL_CHANNEL_FLAG_EBS_ADD | 1210 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1211 1212 /* 1213 * Check for fragmented scan on LMAC2 - high band. 1214 * LMAC1 - low band is checked above. 1215 */ 1216 if (iwl_mvm_cdb_scan_api(mvm)) { 1217 if (iwl_mvm_is_cdb_supported(mvm)) 1218 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1219 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1220 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1221 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1222 num_channels); 1223 } else { 1224 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1225 num_channels); 1226 } 1227 1228 cmd.data[0] = cfg; 1229 cmd.len[0] = cmd_size; 1230 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1231 1232 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1233 1234 ret = iwl_mvm_send_cmd(mvm, &cmd); 1235 if (!ret) { 1236 mvm->scan_type = type; 1237 mvm->hb_scan_type = hb_type; 1238 } 1239 1240 kfree(cfg); 1241 return ret; 1242 } 1243 1244 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1245 { 1246 struct iwl_scan_config cfg; 1247 struct iwl_host_cmd cmd = { 1248 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1249 .len[0] = sizeof(cfg), 1250 .data[0] = &cfg, 1251 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1252 }; 1253 1254 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1255 return iwl_mvm_legacy_config_scan(mvm); 1256 1257 memset(&cfg, 0, sizeof(cfg)); 1258 1259 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1260 ADD_STA, 0) < 12) { 1261 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1262 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1263 SCAN_CFG_CMD, 0) < 5) { 1264 /* 1265 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1266 * version 5. 1267 */ 1268 cfg.bcast_sta_id = 0xff; 1269 } 1270 1271 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1272 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1273 1274 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1275 1276 return iwl_mvm_send_cmd(mvm, &cmd); 1277 } 1278 1279 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1280 { 1281 int i; 1282 1283 for (i = 0; i < mvm->max_scans; i++) 1284 if (mvm->scan_uid_status[i] == status) 1285 return i; 1286 1287 return -ENOENT; 1288 } 1289 1290 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1291 struct iwl_scan_req_umac *cmd, 1292 struct iwl_mvm_scan_params *params) 1293 { 1294 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1295 u8 active_dwell, passive_dwell; 1296 1297 timing = &scan_timing[params->type]; 1298 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1299 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1300 1301 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1302 cmd->v7.adwell_default_n_aps_social = 1303 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1304 cmd->v7.adwell_default_n_aps = 1305 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1306 1307 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1308 cmd->v9.adwell_default_hb_n_aps = 1309 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1310 1311 /* if custom max budget was configured with debugfs */ 1312 if (IWL_MVM_ADWELL_MAX_BUDGET) 1313 cmd->v7.adwell_max_budget = 1314 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1315 else if (params->ssids && params->ssids[0].ssid_len) 1316 cmd->v7.adwell_max_budget = 1317 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1318 else 1319 cmd->v7.adwell_max_budget = 1320 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1321 1322 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1323 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1324 cpu_to_le32(timing->max_out_time); 1325 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1326 cpu_to_le32(timing->suspend_time); 1327 1328 if (iwl_mvm_is_cdb_supported(mvm)) { 1329 hb_timing = &scan_timing[params->hb_type]; 1330 1331 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1332 cpu_to_le32(hb_timing->max_out_time); 1333 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1334 cpu_to_le32(hb_timing->suspend_time); 1335 } 1336 1337 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1338 cmd->v7.active_dwell = active_dwell; 1339 cmd->v7.passive_dwell = passive_dwell; 1340 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1341 } else { 1342 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1343 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1344 if (iwl_mvm_is_cdb_supported(mvm)) { 1345 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1346 active_dwell; 1347 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1348 passive_dwell; 1349 } 1350 } 1351 } else { 1352 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1353 cmd->v1.active_dwell = active_dwell; 1354 cmd->v1.passive_dwell = passive_dwell; 1355 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1356 1357 if (iwl_mvm_is_cdb_supported(mvm)) { 1358 hb_timing = &scan_timing[params->hb_type]; 1359 1360 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1361 cpu_to_le32(hb_timing->max_out_time); 1362 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1363 cpu_to_le32(hb_timing->suspend_time); 1364 } 1365 1366 if (iwl_mvm_cdb_scan_api(mvm)) { 1367 cmd->v6.scan_priority = 1368 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1369 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1370 cpu_to_le32(timing->max_out_time); 1371 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1372 cpu_to_le32(timing->suspend_time); 1373 } else { 1374 cmd->v1.scan_priority = 1375 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1376 cmd->v1.max_out_time = 1377 cpu_to_le32(timing->max_out_time); 1378 cmd->v1.suspend_time = 1379 cpu_to_le32(timing->suspend_time); 1380 } 1381 } 1382 1383 if (iwl_mvm_is_regular_scan(params)) 1384 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1385 else 1386 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1387 } 1388 1389 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1390 { 1391 return iwl_mvm_is_regular_scan(params) ? 1392 IWL_SCAN_PRIORITY_EXT_6 : 1393 IWL_SCAN_PRIORITY_EXT_2; 1394 } 1395 1396 static void 1397 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, 1398 struct iwl_scan_general_params_v10 *general_params, 1399 struct iwl_mvm_scan_params *params) 1400 { 1401 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1402 u8 active_dwell, passive_dwell; 1403 1404 timing = &scan_timing[params->type]; 1405 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1406 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1407 1408 general_params->adwell_default_social_chn = 1409 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1410 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1411 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1412 1413 /* if custom max budget was configured with debugfs */ 1414 if (IWL_MVM_ADWELL_MAX_BUDGET) 1415 general_params->adwell_max_budget = 1416 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1417 else if (params->ssids && params->ssids[0].ssid_len) 1418 general_params->adwell_max_budget = 1419 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1420 else 1421 general_params->adwell_max_budget = 1422 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1423 1424 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1425 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1426 cpu_to_le32(timing->max_out_time); 1427 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1428 cpu_to_le32(timing->suspend_time); 1429 1430 hb_timing = &scan_timing[params->hb_type]; 1431 1432 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1433 cpu_to_le32(hb_timing->max_out_time); 1434 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1435 cpu_to_le32(hb_timing->suspend_time); 1436 1437 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1438 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1439 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1440 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1441 } 1442 1443 struct iwl_mvm_scan_channel_segment { 1444 u8 start_idx; 1445 u8 end_idx; 1446 u8 first_channel_id; 1447 u8 last_channel_id; 1448 u8 channel_spacing_shift; 1449 u8 band; 1450 }; 1451 1452 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1453 { 1454 .start_idx = 0, 1455 .end_idx = 13, 1456 .first_channel_id = 1, 1457 .last_channel_id = 14, 1458 .channel_spacing_shift = 0, 1459 .band = PHY_BAND_24 1460 }, 1461 { 1462 .start_idx = 14, 1463 .end_idx = 41, 1464 .first_channel_id = 36, 1465 .last_channel_id = 144, 1466 .channel_spacing_shift = 2, 1467 .band = PHY_BAND_5 1468 }, 1469 { 1470 .start_idx = 42, 1471 .end_idx = 50, 1472 .first_channel_id = 149, 1473 .last_channel_id = 181, 1474 .channel_spacing_shift = 2, 1475 .band = PHY_BAND_5 1476 }, 1477 { 1478 .start_idx = 51, 1479 .end_idx = 111, 1480 .first_channel_id = 1, 1481 .last_channel_id = 241, 1482 .channel_spacing_shift = 2, 1483 .band = PHY_BAND_6 1484 }, 1485 }; 1486 1487 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1488 { 1489 int i, index; 1490 1491 if (!channel_id) 1492 return -EINVAL; 1493 1494 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1495 const struct iwl_mvm_scan_channel_segment *ch_segment = 1496 &scan_channel_segments[i]; 1497 u32 ch_offset; 1498 1499 if (ch_segment->band != band || 1500 ch_segment->first_channel_id > channel_id || 1501 ch_segment->last_channel_id < channel_id) 1502 continue; 1503 1504 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1505 ch_segment->channel_spacing_shift; 1506 1507 index = scan_channel_segments[i].start_idx + ch_offset; 1508 if (index < IWL_SCAN_NUM_CHANNELS) 1509 return index; 1510 1511 break; 1512 } 1513 1514 return -EINVAL; 1515 } 1516 1517 static const u8 p2p_go_friendly_chs[] = { 1518 36, 40, 44, 48, 149, 153, 157, 161, 165, 1519 }; 1520 1521 static const u8 social_chs[] = { 1522 1, 6, 11 1523 }; 1524 1525 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1526 u8 ch_id, u8 band, u8 *ch_bitmap, 1527 size_t bitmap_n_entries) 1528 { 1529 int i; 1530 1531 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1532 return; 1533 1534 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1535 if (p2p_go_friendly_chs[i] == ch_id) { 1536 int ch_idx, bitmap_idx; 1537 1538 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1539 if (ch_idx < 0) 1540 return; 1541 1542 bitmap_idx = ch_idx / 8; 1543 if (bitmap_idx >= bitmap_n_entries) 1544 return; 1545 1546 ch_idx = ch_idx % 8; 1547 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1548 1549 return; 1550 } 1551 } 1552 } 1553 1554 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1555 { 1556 int i; 1557 u32 flags = 0; 1558 1559 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1560 goto out; 1561 1562 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1563 if (p2p_go_friendly_chs[i] == ch_id) { 1564 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1565 break; 1566 } 1567 } 1568 1569 if (flags) 1570 goto out; 1571 1572 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1573 if (social_chs[i] == ch_id) { 1574 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1575 break; 1576 } 1577 } 1578 1579 out: 1580 return flags; 1581 } 1582 1583 static void 1584 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1585 struct ieee80211_channel **channels, 1586 int n_channels, u32 flags, 1587 struct iwl_scan_channel_cfg_umac *channel_cfg) 1588 { 1589 int i; 1590 1591 for (i = 0; i < n_channels; i++) { 1592 channel_cfg[i].flags = cpu_to_le32(flags); 1593 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1594 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1595 enum nl80211_band band = channels[i]->band; 1596 1597 channel_cfg[i].v2.band = 1598 iwl_mvm_phy_band_from_nl80211(band); 1599 channel_cfg[i].v2.iter_count = 1; 1600 channel_cfg[i].v2.iter_interval = 0; 1601 } else { 1602 channel_cfg[i].v1.iter_count = 1; 1603 channel_cfg[i].v1.iter_interval = 0; 1604 } 1605 } 1606 } 1607 1608 static void 1609 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1610 struct ieee80211_channel **channels, 1611 struct iwl_scan_channel_params_v4 *cp, 1612 int n_channels, u32 flags, 1613 enum nl80211_iftype vif_type) 1614 { 1615 u8 *bitmap = cp->adwell_ch_override_bitmap; 1616 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1617 int i; 1618 1619 for (i = 0; i < n_channels; i++) { 1620 enum nl80211_band band = channels[i]->band; 1621 struct iwl_scan_channel_cfg_umac *cfg = 1622 &cp->channel_config[i]; 1623 1624 cfg->flags = cpu_to_le32(flags); 1625 cfg->v2.channel_num = channels[i]->hw_value; 1626 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1627 cfg->v2.iter_count = 1; 1628 cfg->v2.iter_interval = 0; 1629 1630 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1631 cfg->v2.channel_num, 1632 cfg->v2.band, bitmap, 1633 bitmap_n_entries); 1634 } 1635 } 1636 1637 static void 1638 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1639 struct ieee80211_channel **channels, 1640 struct iwl_scan_channel_params_v6 *cp, 1641 int n_channels, u32 flags, 1642 enum nl80211_iftype vif_type) 1643 { 1644 int i; 1645 1646 for (i = 0; i < n_channels; i++) { 1647 enum nl80211_band band = channels[i]->band; 1648 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1649 u32 n_aps_flag = 1650 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1651 channels[i]->hw_value); 1652 1653 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1654 cfg->v2.channel_num = channels[i]->hw_value; 1655 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1656 if (cfg80211_channel_is_psc(channels[i])) 1657 cfg->flags = 0; 1658 cfg->v2.iter_count = 1; 1659 cfg->v2.iter_interval = 0; 1660 } 1661 } 1662 1663 static int 1664 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1665 struct iwl_mvm_scan_params *params, 1666 struct iwl_scan_probe_params_v4 *pp) 1667 { 1668 int j, idex_s = 0, idex_b = 0; 1669 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1670 params->scan_6ghz_params; 1671 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1672 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1673 1674 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1675 j++) { 1676 if (!params->ssids[j].ssid_len) 1677 continue; 1678 1679 pp->short_ssid[idex_s] = 1680 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1681 params->ssids[j].ssid_len)); 1682 1683 if (hidden_supported) { 1684 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1685 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1686 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1687 params->ssids[j].ssid_len); 1688 } 1689 idex_s++; 1690 } 1691 1692 /* 1693 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1694 * collocated parameters. This might not be optimal, as this processing 1695 * does not (yet) correspond to the actual channels, so it is possible 1696 * that some entries would be left out. 1697 * 1698 * TODO: improve this logic. 1699 */ 1700 for (j = 0; j < params->n_6ghz_params; j++) { 1701 int k; 1702 1703 /* First, try to place the short SSID */ 1704 if (scan_6ghz_params[j].short_ssid_valid) { 1705 for (k = 0; k < idex_s; k++) { 1706 if (pp->short_ssid[k] == 1707 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1708 break; 1709 } 1710 1711 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1712 pp->short_ssid[idex_s++] = 1713 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1714 } 1715 } 1716 1717 /* try to place BSSID for the same entry */ 1718 for (k = 0; k < idex_b; k++) { 1719 if (!memcmp(&pp->bssid_array[k], 1720 scan_6ghz_params[j].bssid, ETH_ALEN)) 1721 break; 1722 } 1723 1724 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1725 memcpy(&pp->bssid_array[idex_b++], 1726 scan_6ghz_params[j].bssid, ETH_ALEN); 1727 } 1728 } 1729 1730 pp->short_ssid_num = idex_s; 1731 pp->bssid_num = idex_b; 1732 return 0; 1733 } 1734 1735 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1736 static void 1737 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm_scan_params *params, 1738 u32 n_channels, 1739 struct iwl_scan_probe_params_v4 *pp, 1740 struct iwl_scan_channel_params_v6 *cp, 1741 enum nl80211_iftype vif_type) 1742 { 1743 struct iwl_scan_channel_cfg_umac *channel_cfg = cp->channel_config; 1744 int i; 1745 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1746 params->scan_6ghz_params; 1747 1748 for (i = 0; i < params->n_channels; i++) { 1749 struct iwl_scan_channel_cfg_umac *cfg = 1750 &cp->channel_config[i]; 1751 1752 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1753 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1754 bool force_passive, found = false, allow_passive = true, 1755 unsolicited_probe_on_chan = false, psc_no_listen = false; 1756 1757 cfg->v1.channel_num = params->channels[i]->hw_value; 1758 cfg->v2.band = 2; 1759 cfg->v2.iter_count = 1; 1760 cfg->v2.iter_interval = 0; 1761 1762 /* 1763 * The optimize the scan time, i.e., reduce the scan dwell time 1764 * on each channel, the below logic tries to set 3 direct BSSID 1765 * probe requests for each broadcast probe request with a short 1766 * SSID. 1767 * TODO: improve this logic 1768 */ 1769 n_used_bssid_entries = 3; 1770 for (j = 0; j < params->n_6ghz_params; j++) { 1771 if (!(scan_6ghz_params[j].channel_idx == i)) 1772 continue; 1773 1774 found = false; 1775 unsolicited_probe_on_chan |= 1776 scan_6ghz_params[j].unsolicited_probe; 1777 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1778 1779 for (k = 0; k < pp->short_ssid_num; k++) { 1780 if (!scan_6ghz_params[j].unsolicited_probe && 1781 le32_to_cpu(pp->short_ssid[k]) == 1782 scan_6ghz_params[j].short_ssid) { 1783 /* Relevant short SSID bit set */ 1784 if (s_ssid_bitmap & BIT(k)) { 1785 found = true; 1786 break; 1787 } 1788 1789 /* 1790 * Use short SSID only to create a new 1791 * iteration during channel dwell or in 1792 * case that the short SSID has a 1793 * matching SSID, i.e., scan for hidden 1794 * APs. 1795 */ 1796 if (n_used_bssid_entries >= 3) { 1797 s_ssid_bitmap |= BIT(k); 1798 s_max++; 1799 n_used_bssid_entries -= 3; 1800 found = true; 1801 break; 1802 } else if (pp->direct_scan[k].len) { 1803 s_ssid_bitmap |= BIT(k); 1804 s_max++; 1805 found = true; 1806 allow_passive = false; 1807 break; 1808 } 1809 } 1810 } 1811 1812 if (found) 1813 continue; 1814 1815 for (k = 0; k < pp->bssid_num; k++) { 1816 if (!memcmp(&pp->bssid_array[k], 1817 scan_6ghz_params[j].bssid, 1818 ETH_ALEN)) { 1819 if (!(bssid_bitmap & BIT(k))) { 1820 bssid_bitmap |= BIT(k); 1821 b_max++; 1822 n_used_bssid_entries++; 1823 } 1824 break; 1825 } 1826 } 1827 } 1828 1829 flags = bssid_bitmap | (s_ssid_bitmap << 16); 1830 1831 if (cfg80211_channel_is_psc(params->channels[i]) && 1832 psc_no_listen) 1833 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1834 1835 if (unsolicited_probe_on_chan) 1836 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1837 1838 /* 1839 * In the following cases apply passive scan: 1840 * 1. Non fragmented scan: 1841 * - PSC channel with NO_LISTEN_FLAG on should be treated 1842 * like non PSC channel 1843 * - Non PSC channel with more than 3 short SSIDs or more 1844 * than 9 BSSIDs. 1845 * - Non PSC Channel with unsolicited probe response and 1846 * more than 2 short SSIDs or more than 6 BSSIDs. 1847 * - PSC channel with more than 2 short SSIDs or more than 1848 * 6 BSSIDs. 1849 * 3. Fragmented scan: 1850 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1851 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1852 * - Non PSC channel with unsolicited probe response and 1853 * more than 1 SSID or more than 3 BSSIDs. 1854 */ 1855 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1856 if (!cfg80211_channel_is_psc(params->channels[i]) || 1857 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1858 force_passive = (s_max > 3 || b_max > 9); 1859 force_passive |= (unsolicited_probe_on_chan && 1860 (s_max > 2 || b_max > 6)); 1861 } else { 1862 force_passive = (s_max > 2 || b_max > 6); 1863 } 1864 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1865 force_passive = (s_max > 1 || b_max > 3); 1866 } else { 1867 force_passive = (s_max > 2 || b_max > 6); 1868 force_passive |= (unsolicited_probe_on_chan && 1869 (s_max > 1 || b_max > 3)); 1870 } 1871 if ((allow_passive && force_passive) || 1872 (!flags && !cfg80211_channel_is_psc(params->channels[i]))) 1873 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1874 1875 channel_cfg[i].flags |= cpu_to_le32(flags); 1876 } 1877 } 1878 1879 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1880 struct iwl_mvm_scan_params *params, 1881 struct ieee80211_vif *vif) 1882 { 1883 u8 flags = 0; 1884 1885 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1886 1887 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1888 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1889 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1890 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1891 1892 /* set fragmented ebs for fragmented scan on HB channels */ 1893 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1894 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1895 1896 return flags; 1897 } 1898 1899 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1900 struct iwl_mvm_scan_params *params, 1901 struct ieee80211_vif *vif) 1902 { 1903 struct ieee80211_supported_band *sband = 1904 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1905 u32 n_disabled, i; 1906 1907 params->enable_6ghz_passive = false; 1908 1909 if (params->scan_6ghz) 1910 return; 1911 1912 if (!fw_has_capa(&mvm->fw->ucode_capa, 1913 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 1914 IWL_DEBUG_SCAN(mvm, 1915 "6GHz passive scan: Not supported by FW\n"); 1916 return; 1917 } 1918 1919 /* 6GHz passive scan allowed only on station interface */ 1920 if (vif->type != NL80211_IFTYPE_STATION) { 1921 IWL_DEBUG_SCAN(mvm, 1922 "6GHz passive scan: not station interface\n"); 1923 return; 1924 } 1925 1926 /* 1927 * 6GHz passive scan is allowed while associated in a defined time 1928 * interval following HW reset or resume flow 1929 */ 1930 if (vif->bss_conf.assoc && 1931 (time_before(mvm->last_reset_or_resume_time_jiffies + 1932 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 1933 jiffies))) { 1934 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: associated\n"); 1935 return; 1936 } 1937 1938 /* No need for 6GHz passive scan if not enough time elapsed */ 1939 if (time_after(mvm->last_6ghz_passive_scan_jiffies + 1940 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) { 1941 IWL_DEBUG_SCAN(mvm, 1942 "6GHz passive scan: timeout did not expire\n"); 1943 return; 1944 } 1945 1946 /* not enough channels in the regular scan request */ 1947 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 1948 IWL_DEBUG_SCAN(mvm, 1949 "6GHz passive scan: not enough channels\n"); 1950 return; 1951 } 1952 1953 for (i = 0; i < params->n_ssids; i++) { 1954 if (!params->ssids[i].ssid_len) 1955 break; 1956 } 1957 1958 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 1959 if (i == params->n_ssids) { 1960 IWL_DEBUG_SCAN(mvm, 1961 "6GHz passive scan: no wildcard SSID\n"); 1962 return; 1963 } 1964 1965 if (!sband || !sband->n_channels) { 1966 IWL_DEBUG_SCAN(mvm, 1967 "6GHz passive scan: no 6GHz channels\n"); 1968 return; 1969 } 1970 1971 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 1972 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 1973 n_disabled++; 1974 } 1975 1976 /* 1977 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 1978 * scan 1979 */ 1980 if (n_disabled != sband->n_channels) { 1981 IWL_DEBUG_SCAN(mvm, 1982 "6GHz passive scan: 6GHz channels enabled\n"); 1983 return; 1984 } 1985 1986 /* all conditions to enable 6ghz passive scan are satisfied */ 1987 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 1988 params->enable_6ghz_passive = true; 1989 } 1990 1991 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 1992 struct iwl_mvm_scan_params *params, 1993 struct ieee80211_vif *vif, 1994 int type) 1995 { 1996 u16 flags = 0; 1997 1998 if (params->n_ssids == 0) 1999 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2000 2001 if (iwl_mvm_is_scan_fragmented(params->type)) 2002 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2003 2004 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2005 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2006 2007 if (params->pass_all) 2008 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2009 else 2010 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2011 2012 if (!iwl_mvm_is_regular_scan(params)) 2013 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2014 2015 if (params->iter_notif || 2016 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2017 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2018 2019 if (IWL_MVM_ADWELL_ENABLE) 2020 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2021 2022 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2023 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2024 2025 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2026 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2027 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2028 2029 if (params->enable_6ghz_passive) 2030 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2031 2032 return flags; 2033 } 2034 2035 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2036 struct iwl_mvm_scan_params *params, 2037 struct ieee80211_vif *vif) 2038 { 2039 u16 flags = 0; 2040 2041 if (params->n_ssids == 0) 2042 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2043 2044 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2045 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2046 2047 if (iwl_mvm_is_scan_fragmented(params->type)) 2048 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2049 2050 if (iwl_mvm_is_cdb_supported(mvm) && 2051 iwl_mvm_is_scan_fragmented(params->hb_type)) 2052 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2053 2054 if (iwl_mvm_rrm_scan_needed(mvm) && 2055 fw_has_capa(&mvm->fw->ucode_capa, 2056 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2057 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2058 2059 if (params->pass_all) 2060 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2061 else 2062 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2063 2064 if (!iwl_mvm_is_regular_scan(params)) 2065 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2066 2067 if (params->iter_notif) 2068 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2069 2070 #ifdef CONFIG_IWLWIFI_DEBUGFS 2071 if (mvm->scan_iter_notif_enabled) 2072 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2073 #endif 2074 2075 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2076 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2077 2078 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2079 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2080 2081 /* 2082 * Extended dwell is relevant only for low band to start with, as it is 2083 * being used for social channles only (1, 6, 11), so we can check 2084 * only scan type on low band also for CDB. 2085 */ 2086 if (iwl_mvm_is_regular_scan(params) && 2087 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2088 !iwl_mvm_is_scan_fragmented(params->type) && 2089 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2090 !iwl_mvm_is_oce_supported(mvm)) 2091 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2092 2093 if (iwl_mvm_is_oce_supported(mvm)) { 2094 if ((params->flags & 2095 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2096 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2097 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2098 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2099 * the same bit, we need to make sure that we use this bit here 2100 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2101 * used. */ 2102 if ((params->flags & 2103 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2104 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2105 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2106 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2107 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2108 } 2109 2110 return flags; 2111 } 2112 2113 static int 2114 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2115 struct iwl_scan_umac_schedule *schedule, 2116 __le16 *delay) 2117 { 2118 int i; 2119 if (WARN_ON(!params->n_scan_plans || 2120 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2121 return -EINVAL; 2122 2123 for (i = 0; i < params->n_scan_plans; i++) { 2124 struct cfg80211_sched_scan_plan *scan_plan = 2125 ¶ms->scan_plans[i]; 2126 2127 schedule[i].iter_count = scan_plan->iterations; 2128 schedule[i].interval = 2129 cpu_to_le16(scan_plan->interval); 2130 } 2131 2132 /* 2133 * If the number of iterations of the last scan plan is set to 2134 * zero, it should run infinitely. However, this is not always the case. 2135 * For example, when regular scan is requested the driver sets one scan 2136 * plan with one iteration. 2137 */ 2138 if (!schedule[params->n_scan_plans - 1].iter_count) 2139 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2140 2141 *delay = cpu_to_le16(params->delay); 2142 2143 return 0; 2144 } 2145 2146 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2147 struct iwl_mvm_scan_params *params, 2148 int type, int uid) 2149 { 2150 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2151 struct iwl_scan_umac_chan_param *chan_param; 2152 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2153 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2154 mvm->fw->ucode_capa.n_scan_channels; 2155 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2156 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2157 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2158 struct iwl_ssid_ie *direct_scan; 2159 int ret = 0; 2160 u32 ssid_bitmap = 0; 2161 u8 channel_flags = 0; 2162 u16 gen_flags; 2163 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2164 2165 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2166 2167 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2168 2169 mvm->scan_uid_status[uid] = type; 2170 2171 cmd->uid = cpu_to_le32(uid); 2172 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2173 cmd->general_flags = cpu_to_le16(gen_flags); 2174 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2175 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2176 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2177 IWL_SCAN_NUM_OF_FRAGS; 2178 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2179 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2180 IWL_SCAN_NUM_OF_FRAGS; 2181 2182 cmd->v8.general_flags2 = 2183 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2184 } 2185 2186 cmd->scan_start_mac_id = scan_vif->id; 2187 2188 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2189 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2190 2191 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2192 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2193 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2194 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2195 2196 /* set fragmented ebs for fragmented scan on HB channels */ 2197 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2198 if (gen_flags & 2199 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2200 (!iwl_mvm_is_cdb_supported(mvm) && 2201 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2202 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2203 } 2204 } 2205 2206 chan_param->flags = channel_flags; 2207 chan_param->count = params->n_channels; 2208 2209 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2210 &tail_v2->delay); 2211 if (ret) { 2212 mvm->scan_uid_status[uid] = 0; 2213 return ret; 2214 } 2215 2216 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2217 tail_v2->preq = params->preq; 2218 direct_scan = tail_v2->direct_scan; 2219 } else { 2220 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2221 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2222 ¶ms->preq); 2223 direct_scan = tail_v1->direct_scan; 2224 } 2225 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2226 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2227 params->n_channels, ssid_bitmap, 2228 cmd_data); 2229 return 0; 2230 } 2231 2232 static void 2233 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, 2234 struct iwl_mvm_scan_params *params, 2235 struct ieee80211_vif *vif, 2236 struct iwl_scan_general_params_v10 *gp, 2237 u16 gen_flags) 2238 { 2239 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2240 2241 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); 2242 2243 gp->flags = cpu_to_le16(gen_flags); 2244 2245 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2246 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2247 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2248 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2249 2250 gp->scan_start_mac_id = scan_vif->id; 2251 } 2252 2253 static void 2254 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2255 struct iwl_scan_probe_params_v3 *pp) 2256 { 2257 pp->preq = params->preq; 2258 pp->ssid_num = params->n_ssids; 2259 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2260 } 2261 2262 static void 2263 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2264 struct iwl_scan_probe_params_v4 *pp, 2265 u32 *bitmap_ssid) 2266 { 2267 pp->preq = params->preq; 2268 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2269 } 2270 2271 static void 2272 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2273 struct iwl_mvm_scan_params *params, 2274 struct ieee80211_vif *vif, 2275 struct iwl_scan_channel_params_v4 *cp, 2276 u32 channel_cfg_flags) 2277 { 2278 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2279 cp->count = params->n_channels; 2280 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2281 2282 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2283 params->n_channels, 2284 channel_cfg_flags, 2285 vif->type); 2286 } 2287 2288 static void 2289 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2290 struct iwl_mvm_scan_params *params, 2291 struct ieee80211_vif *vif, 2292 struct iwl_scan_channel_params_v6 *cp, 2293 u32 channel_cfg_flags) 2294 { 2295 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2296 cp->count = params->n_channels; 2297 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2298 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2299 2300 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2301 params->n_channels, 2302 channel_cfg_flags, 2303 vif->type); 2304 2305 if (params->enable_6ghz_passive) { 2306 struct ieee80211_supported_band *sband = 2307 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2308 u32 i; 2309 2310 for (i = 0; i < sband->n_channels; i++) { 2311 struct ieee80211_channel *channel = 2312 &sband->channels[i]; 2313 2314 struct iwl_scan_channel_cfg_umac *cfg = 2315 &cp->channel_config[cp->count]; 2316 2317 if (!cfg80211_channel_is_psc(channel)) 2318 continue; 2319 2320 cfg->flags = 0; 2321 cfg->v2.channel_num = channel->hw_value; 2322 cfg->v2.band = PHY_BAND_6; 2323 cfg->v2.iter_count = 1; 2324 cfg->v2.iter_interval = 0; 2325 cp->count++; 2326 } 2327 } 2328 } 2329 2330 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2331 struct iwl_mvm_scan_params *params, int type, 2332 int uid) 2333 { 2334 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2335 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2336 int ret; 2337 u16 gen_flags; 2338 2339 mvm->scan_uid_status[uid] = type; 2340 2341 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2342 cmd->uid = cpu_to_le32(uid); 2343 2344 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2345 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2346 &scan_p->general_params, 2347 gen_flags); 2348 2349 ret = iwl_mvm_fill_scan_sched_params(params, 2350 scan_p->periodic_params.schedule, 2351 &scan_p->periodic_params.delay); 2352 if (ret) 2353 return ret; 2354 2355 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2356 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2357 &scan_p->channel_params, 0); 2358 2359 return 0; 2360 } 2361 2362 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2363 struct iwl_mvm_scan_params *params, int type, 2364 int uid) 2365 { 2366 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd; 2367 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params; 2368 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2369 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2370 int ret; 2371 u16 gen_flags; 2372 u32 bitmap_ssid = 0; 2373 2374 mvm->scan_uid_status[uid] = type; 2375 2376 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2377 cmd->uid = cpu_to_le32(uid); 2378 2379 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2380 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2381 &scan_p->general_params, 2382 gen_flags); 2383 2384 ret = iwl_mvm_fill_scan_sched_params(params, 2385 scan_p->periodic_params.schedule, 2386 &scan_p->periodic_params.delay); 2387 if (ret) 2388 return ret; 2389 2390 if (!params->scan_6ghz) { 2391 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2392 &bitmap_ssid); 2393 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2394 &scan_p->channel_params, bitmap_ssid); 2395 2396 return 0; 2397 } else { 2398 pb->preq = params->preq; 2399 } 2400 2401 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2402 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2403 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2404 2405 ret = iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2406 if (ret) 2407 return ret; 2408 2409 iwl_mvm_umac_scan_cfg_channels_v6_6g(params, 2410 params->n_channels, 2411 pb, cp, vif->type); 2412 cp->count = params->n_channels; 2413 if (!params->n_ssids || 2414 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2415 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2416 2417 return 0; 2418 } 2419 2420 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2421 { 2422 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2423 } 2424 2425 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2426 { 2427 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2428 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2429 2430 /* This looks a bit arbitrary, but the idea is that if we run 2431 * out of possible simultaneous scans and the userspace is 2432 * trying to run a scan type that is already running, we 2433 * return -EBUSY. But if the userspace wants to start a 2434 * different type of scan, we stop the opposite type to make 2435 * space for the new request. The reason is backwards 2436 * compatibility with old wpa_supplicant that wouldn't stop a 2437 * scheduled scan before starting a normal scan. 2438 */ 2439 2440 /* FW supports only a single periodic scan */ 2441 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2442 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2443 return -EBUSY; 2444 2445 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2446 return 0; 2447 2448 /* Use a switch, even though this is a bitmask, so that more 2449 * than one bits set will fall in default and we will warn. 2450 */ 2451 switch (type) { 2452 case IWL_MVM_SCAN_REGULAR: 2453 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2454 return -EBUSY; 2455 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2456 case IWL_MVM_SCAN_SCHED: 2457 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2458 return -EBUSY; 2459 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2460 case IWL_MVM_SCAN_NETDETECT: 2461 /* For non-unified images, there's no need to stop 2462 * anything for net-detect since the firmware is 2463 * restarted anyway. This way, any sched scans that 2464 * were running will be restarted when we resume. 2465 */ 2466 if (!unified_image) 2467 return 0; 2468 2469 /* If this is a unified image and we ran out of scans, 2470 * we need to stop something. Prefer stopping regular 2471 * scans, because the results are useless at this 2472 * point, and we should be able to keep running 2473 * another scheduled scan while suspended. 2474 */ 2475 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2476 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2477 true); 2478 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2479 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2480 true); 2481 /* Something is wrong if no scan was running but we 2482 * ran out of scans. 2483 */ 2484 fallthrough; 2485 default: 2486 WARN_ON(1); 2487 break; 2488 } 2489 2490 return -EIO; 2491 } 2492 2493 #define SCAN_TIMEOUT 20000 2494 2495 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2496 { 2497 struct delayed_work *delayed_work = to_delayed_work(work); 2498 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2499 scan_timeout_dwork); 2500 2501 IWL_ERR(mvm, "regular scan timed out\n"); 2502 2503 iwl_force_nmi(mvm->trans); 2504 } 2505 2506 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2507 struct iwl_mvm_scan_params *params, 2508 struct ieee80211_vif *vif) 2509 { 2510 if (iwl_mvm_is_cdb_supported(mvm)) { 2511 params->type = 2512 iwl_mvm_get_scan_type_band(mvm, vif, 2513 NL80211_BAND_2GHZ); 2514 params->hb_type = 2515 iwl_mvm_get_scan_type_band(mvm, vif, 2516 NL80211_BAND_5GHZ); 2517 } else { 2518 params->type = iwl_mvm_get_scan_type(mvm, vif); 2519 } 2520 } 2521 2522 struct iwl_scan_umac_handler { 2523 u8 version; 2524 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2525 struct iwl_mvm_scan_params *params, int type, int uid); 2526 }; 2527 2528 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2529 .version = _ver, \ 2530 .handler = iwl_mvm_scan_umac_v##_ver, \ 2531 } 2532 2533 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2534 /* set the newest version first to shorten the list traverse time */ 2535 IWL_SCAN_UMAC_HANDLER(14), 2536 IWL_SCAN_UMAC_HANDLER(12), 2537 }; 2538 2539 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2540 struct ieee80211_vif *vif, 2541 struct iwl_host_cmd *hcmd, 2542 struct iwl_mvm_scan_params *params, 2543 int type) 2544 { 2545 int uid, i, err; 2546 u8 scan_ver; 2547 2548 lockdep_assert_held(&mvm->mutex); 2549 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2550 2551 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2552 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2553 2554 return iwl_mvm_scan_lmac(mvm, vif, params); 2555 } 2556 2557 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2558 if (uid < 0) 2559 return uid; 2560 2561 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2562 2563 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2564 SCAN_REQ_UMAC, 2565 IWL_FW_CMD_VER_UNKNOWN); 2566 2567 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2568 const struct iwl_scan_umac_handler *ver_handler = 2569 &iwl_scan_umac_handlers[i]; 2570 2571 if (ver_handler->version != scan_ver) 2572 continue; 2573 2574 return ver_handler->handler(mvm, vif, params, type, uid); 2575 } 2576 2577 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2578 if (err) 2579 return err; 2580 2581 return uid; 2582 } 2583 2584 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2585 struct cfg80211_scan_request *req, 2586 struct ieee80211_scan_ies *ies) 2587 { 2588 struct iwl_host_cmd hcmd = { 2589 .len = { iwl_mvm_scan_size(mvm), }, 2590 .data = { mvm->scan_cmd, }, 2591 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2592 }; 2593 struct iwl_mvm_scan_params params = {}; 2594 int ret, uid; 2595 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2596 2597 lockdep_assert_held(&mvm->mutex); 2598 2599 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2600 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2601 return -EBUSY; 2602 } 2603 2604 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2605 if (ret) 2606 return ret; 2607 2608 /* we should have failed registration if scan_cmd was NULL */ 2609 if (WARN_ON(!mvm->scan_cmd)) 2610 return -ENOMEM; 2611 2612 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2613 return -ENOBUFS; 2614 2615 params.n_ssids = req->n_ssids; 2616 params.flags = req->flags; 2617 params.n_channels = req->n_channels; 2618 params.delay = 0; 2619 params.ssids = req->ssids; 2620 params.channels = req->channels; 2621 params.mac_addr = req->mac_addr; 2622 params.mac_addr_mask = req->mac_addr_mask; 2623 params.no_cck = req->no_cck; 2624 params.pass_all = true; 2625 params.n_match_sets = 0; 2626 params.match_sets = NULL; 2627 2628 params.scan_plans = &scan_plan; 2629 params.n_scan_plans = 1; 2630 2631 params.n_6ghz_params = req->n_6ghz_params; 2632 params.scan_6ghz_params = req->scan_6ghz_params; 2633 params.scan_6ghz = req->scan_6ghz; 2634 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2635 2636 if (req->duration) 2637 params.iter_notif = true; 2638 2639 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2640 2641 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 2642 2643 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2644 IWL_MVM_SCAN_REGULAR); 2645 2646 if (uid < 0) 2647 return uid; 2648 2649 iwl_mvm_pause_tcm(mvm, false); 2650 2651 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2652 if (ret) { 2653 /* If the scan failed, it usually means that the FW was unable 2654 * to allocate the time events. Warn on it, but maybe we 2655 * should try to send the command again with different params. 2656 */ 2657 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2658 iwl_mvm_resume_tcm(mvm); 2659 mvm->scan_uid_status[uid] = 0; 2660 return ret; 2661 } 2662 2663 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2664 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2665 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2666 2667 if (params.enable_6ghz_passive) 2668 mvm->last_6ghz_passive_scan_jiffies = jiffies; 2669 2670 schedule_delayed_work(&mvm->scan_timeout_dwork, 2671 msecs_to_jiffies(SCAN_TIMEOUT)); 2672 2673 return 0; 2674 } 2675 2676 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2677 struct ieee80211_vif *vif, 2678 struct cfg80211_sched_scan_request *req, 2679 struct ieee80211_scan_ies *ies, 2680 int type) 2681 { 2682 struct iwl_host_cmd hcmd = { 2683 .len = { iwl_mvm_scan_size(mvm), }, 2684 .data = { mvm->scan_cmd, }, 2685 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2686 }; 2687 struct iwl_mvm_scan_params params = {}; 2688 int ret, uid; 2689 int i, j; 2690 bool non_psc_included = false; 2691 2692 lockdep_assert_held(&mvm->mutex); 2693 2694 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2695 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2696 return -EBUSY; 2697 } 2698 2699 ret = iwl_mvm_check_running_scans(mvm, type); 2700 if (ret) 2701 return ret; 2702 2703 /* we should have failed registration if scan_cmd was NULL */ 2704 if (WARN_ON(!mvm->scan_cmd)) 2705 return -ENOMEM; 2706 2707 2708 params.n_ssids = req->n_ssids; 2709 params.flags = req->flags; 2710 params.n_channels = req->n_channels; 2711 params.ssids = req->ssids; 2712 params.channels = req->channels; 2713 params.mac_addr = req->mac_addr; 2714 params.mac_addr_mask = req->mac_addr_mask; 2715 params.no_cck = false; 2716 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2717 params.n_match_sets = req->n_match_sets; 2718 params.match_sets = req->match_sets; 2719 if (!req->n_scan_plans) 2720 return -EINVAL; 2721 2722 params.n_scan_plans = req->n_scan_plans; 2723 params.scan_plans = req->scan_plans; 2724 2725 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2726 2727 /* In theory, LMAC scans can handle a 32-bit delay, but since 2728 * waiting for over 18 hours to start the scan is a bit silly 2729 * and to keep it aligned with UMAC scans (which only support 2730 * 16-bit delays), trim it down to 16-bits. 2731 */ 2732 if (req->delay > U16_MAX) { 2733 IWL_DEBUG_SCAN(mvm, 2734 "delay value is > 16-bits, set to max possible\n"); 2735 params.delay = U16_MAX; 2736 } else { 2737 params.delay = req->delay; 2738 } 2739 2740 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2741 if (ret) 2742 return ret; 2743 2744 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2745 2746 /* for 6 GHZ band only PSC channels need to be added */ 2747 for (i = 0; i < params.n_channels; i++) { 2748 struct ieee80211_channel *channel = params.channels[i]; 2749 2750 if (channel->band == NL80211_BAND_6GHZ && 2751 !cfg80211_channel_is_psc(channel)) { 2752 non_psc_included = true; 2753 break; 2754 } 2755 } 2756 2757 if (non_psc_included) { 2758 params.channels = kmemdup(params.channels, 2759 sizeof(params.channels[0]) * 2760 params.n_channels, 2761 GFP_KERNEL); 2762 if (!params.channels) 2763 return -ENOMEM; 2764 2765 for (i = j = 0; i < params.n_channels; i++) { 2766 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2767 !cfg80211_channel_is_psc(params.channels[i])) 2768 continue; 2769 params.channels[j++] = params.channels[i]; 2770 } 2771 params.n_channels = j; 2772 } 2773 2774 if (non_psc_included && 2775 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2776 kfree(params.channels); 2777 return -ENOBUFS; 2778 } 2779 2780 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2781 2782 if (non_psc_included) 2783 kfree(params.channels); 2784 if (uid < 0) 2785 return uid; 2786 2787 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2788 if (!ret) { 2789 IWL_DEBUG_SCAN(mvm, 2790 "Sched scan request was sent successfully\n"); 2791 mvm->scan_status |= type; 2792 } else { 2793 /* If the scan failed, it usually means that the FW was unable 2794 * to allocate the time events. Warn on it, but maybe we 2795 * should try to send the command again with different params. 2796 */ 2797 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2798 mvm->scan_uid_status[uid] = 0; 2799 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2800 } 2801 2802 return ret; 2803 } 2804 2805 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2806 struct iwl_rx_cmd_buffer *rxb) 2807 { 2808 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2809 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2810 u32 uid = __le32_to_cpu(notif->uid); 2811 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2812 2813 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2814 return; 2815 2816 /* if the scan is already stopping, we don't need to notify mac80211 */ 2817 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2818 struct cfg80211_scan_info info = { 2819 .aborted = aborted, 2820 .scan_start_tsf = mvm->scan_start, 2821 }; 2822 2823 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2824 ieee80211_scan_completed(mvm->hw, &info); 2825 mvm->scan_vif = NULL; 2826 cancel_delayed_work(&mvm->scan_timeout_dwork); 2827 iwl_mvm_resume_tcm(mvm); 2828 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2829 ieee80211_sched_scan_stopped(mvm->hw); 2830 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2831 } 2832 2833 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2834 IWL_DEBUG_SCAN(mvm, 2835 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2836 uid, mvm->scan_uid_status[uid], 2837 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2838 "completed" : "aborted", 2839 iwl_mvm_ebs_status_str(notif->ebs_status)); 2840 IWL_DEBUG_SCAN(mvm, 2841 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2842 notif->last_schedule, notif->last_iter, 2843 __le32_to_cpu(notif->time_from_last_iter)); 2844 2845 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2846 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2847 mvm->last_ebs_successful = false; 2848 2849 mvm->scan_uid_status[uid] = 0; 2850 } 2851 2852 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2853 struct iwl_rx_cmd_buffer *rxb) 2854 { 2855 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2856 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2857 2858 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2859 2860 IWL_DEBUG_SCAN(mvm, 2861 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2862 notif->status, notif->scanned_channels); 2863 2864 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2865 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2866 ieee80211_sched_scan_results(mvm->hw); 2867 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2868 } 2869 2870 IWL_DEBUG_SCAN(mvm, 2871 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2872 mvm->scan_start); 2873 } 2874 2875 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2876 { 2877 struct iwl_umac_scan_abort cmd = {}; 2878 int uid, ret; 2879 2880 lockdep_assert_held(&mvm->mutex); 2881 2882 /* We should always get a valid index here, because we already 2883 * checked that this type of scan was running in the generic 2884 * code. 2885 */ 2886 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2887 if (WARN_ON_ONCE(uid < 0)) 2888 return uid; 2889 2890 cmd.uid = cpu_to_le32(uid); 2891 2892 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2893 2894 ret = iwl_mvm_send_cmd_pdu(mvm, 2895 iwl_cmd_id(SCAN_ABORT_UMAC, 2896 IWL_ALWAYS_LONG_GROUP, 0), 2897 0, sizeof(cmd), &cmd); 2898 if (!ret) 2899 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2900 2901 return ret; 2902 } 2903 2904 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2905 { 2906 struct iwl_notification_wait wait_scan_done; 2907 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2908 SCAN_OFFLOAD_COMPLETE, }; 2909 int ret; 2910 2911 lockdep_assert_held(&mvm->mutex); 2912 2913 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2914 scan_done_notif, 2915 ARRAY_SIZE(scan_done_notif), 2916 NULL, NULL); 2917 2918 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2919 2920 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2921 ret = iwl_mvm_umac_scan_abort(mvm, type); 2922 else 2923 ret = iwl_mvm_lmac_scan_abort(mvm); 2924 2925 if (ret) { 2926 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2927 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2928 return ret; 2929 } 2930 2931 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2932 1 * HZ); 2933 } 2934 2935 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ 2936 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ 2937 } 2938 2939 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2940 { 2941 switch (scan_ver) { 2942 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14); 2943 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); 2944 } 2945 2946 return 0; 2947 } 2948 2949 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2950 { 2951 int base_size, tail_size; 2952 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2953 SCAN_REQ_UMAC, 2954 IWL_FW_CMD_VER_UNKNOWN); 2955 2956 base_size = iwl_scan_req_umac_get_size(scan_ver); 2957 if (base_size) 2958 return base_size; 2959 2960 2961 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2962 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2963 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2964 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2965 else if (iwl_mvm_cdb_scan_api(mvm)) 2966 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2967 else 2968 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2969 2970 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2971 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2972 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2973 else 2974 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2975 2976 return base_size + 2977 sizeof(struct iwl_scan_channel_cfg_umac) * 2978 mvm->fw->ucode_capa.n_scan_channels + 2979 tail_size; 2980 } 2981 return sizeof(struct iwl_scan_req_lmac) + 2982 sizeof(struct iwl_scan_channel_cfg_lmac) * 2983 mvm->fw->ucode_capa.n_scan_channels + 2984 sizeof(struct iwl_scan_probe_req_v1); 2985 } 2986 2987 /* 2988 * This function is used in nic restart flow, to inform mac80211 about scans 2989 * that was aborted by restart flow or by an assert. 2990 */ 2991 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2992 { 2993 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2994 int uid, i; 2995 2996 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2997 if (uid >= 0) { 2998 struct cfg80211_scan_info info = { 2999 .aborted = true, 3000 }; 3001 3002 cancel_delayed_work(&mvm->scan_timeout_dwork); 3003 3004 ieee80211_scan_completed(mvm->hw, &info); 3005 mvm->scan_uid_status[uid] = 0; 3006 } 3007 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3008 if (uid >= 0) { 3009 /* Sched scan will be restarted by mac80211 in 3010 * restart_hw, so do not report if FW is about to be 3011 * restarted. 3012 */ 3013 if (!mvm->fw_restart) 3014 ieee80211_sched_scan_stopped(mvm->hw); 3015 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3016 mvm->scan_uid_status[uid] = 0; 3017 } 3018 uid = iwl_mvm_scan_uid_by_status(mvm, 3019 IWL_MVM_SCAN_STOPPING_REGULAR); 3020 if (uid >= 0) 3021 mvm->scan_uid_status[uid] = 0; 3022 3023 uid = iwl_mvm_scan_uid_by_status(mvm, 3024 IWL_MVM_SCAN_STOPPING_SCHED); 3025 if (uid >= 0) 3026 mvm->scan_uid_status[uid] = 0; 3027 3028 /* We shouldn't have any UIDs still set. Loop over all the 3029 * UIDs to make sure there's nothing left there and warn if 3030 * any is found. 3031 */ 3032 for (i = 0; i < mvm->max_scans; i++) { 3033 if (WARN_ONCE(mvm->scan_uid_status[i], 3034 "UMAC scan UID %d status was not cleaned\n", 3035 i)) 3036 mvm->scan_uid_status[i] = 0; 3037 } 3038 } else { 3039 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3040 struct cfg80211_scan_info info = { 3041 .aborted = true, 3042 }; 3043 3044 cancel_delayed_work(&mvm->scan_timeout_dwork); 3045 ieee80211_scan_completed(mvm->hw, &info); 3046 } 3047 3048 /* Sched scan will be restarted by mac80211 in 3049 * restart_hw, so do not report if FW is about to be 3050 * restarted. 3051 */ 3052 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3053 !mvm->fw_restart) { 3054 ieee80211_sched_scan_stopped(mvm->hw); 3055 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3056 } 3057 } 3058 } 3059 3060 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3061 { 3062 int ret; 3063 3064 if (!(mvm->scan_status & type)) 3065 return 0; 3066 3067 if (iwl_mvm_is_radio_killed(mvm)) { 3068 ret = 0; 3069 goto out; 3070 } 3071 3072 ret = iwl_mvm_scan_stop_wait(mvm, type); 3073 if (!ret) 3074 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3075 out: 3076 /* Clear the scan status so the next scan requests will 3077 * succeed and mark the scan as stopping, so that the Rx 3078 * handler doesn't do anything, as the scan was stopped from 3079 * above. 3080 */ 3081 mvm->scan_status &= ~type; 3082 3083 if (type == IWL_MVM_SCAN_REGULAR) { 3084 cancel_delayed_work(&mvm->scan_timeout_dwork); 3085 if (notify) { 3086 struct cfg80211_scan_info info = { 3087 .aborted = true, 3088 }; 3089 3090 ieee80211_scan_completed(mvm->hw, &info); 3091 } 3092 } else if (notify) { 3093 ieee80211_sched_scan_stopped(mvm->hw); 3094 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3095 } 3096 3097 return ret; 3098 } 3099