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_V1 | 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 = IWL_AUTH_ALGO_UNSUPPORTED | 583 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 584 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 585 profile->network_type = IWL_NETWORK_TYPE_ANY; 586 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 587 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 588 } 589 590 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 591 592 ret = iwl_mvm_send_cmd(mvm, &cmd); 593 kfree(profile_cfg_v1); 594 free_blocklist: 595 kfree(blocklist); 596 597 return ret; 598 } 599 600 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 601 struct cfg80211_sched_scan_request *req) 602 { 603 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 604 IWL_DEBUG_SCAN(mvm, 605 "Sending scheduled scan with filtering, n_match_sets %d\n", 606 req->n_match_sets); 607 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 608 return false; 609 } 610 611 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 612 613 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 614 return true; 615 } 616 617 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 618 { 619 int ret; 620 struct iwl_host_cmd cmd = { 621 .id = SCAN_OFFLOAD_ABORT_CMD, 622 }; 623 u32 status = CAN_ABORT_STATUS; 624 625 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 626 if (ret) 627 return ret; 628 629 if (status != CAN_ABORT_STATUS) { 630 /* 631 * The scan abort will return 1 for success or 632 * 2 for "failure". A failure condition can be 633 * due to simply not being in an active scan which 634 * can occur if we send the scan abort before the 635 * microcode has notified us that a scan is completed. 636 */ 637 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 638 ret = -ENOENT; 639 } 640 641 return ret; 642 } 643 644 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 645 struct iwl_scan_req_tx_cmd *tx_cmd, 646 bool no_cck) 647 { 648 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 649 TX_CMD_FLG_BT_DIS); 650 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 651 NL80211_BAND_2GHZ, 652 no_cck); 653 654 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 655 ADD_STA, 656 0) < 12) { 657 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 658 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 659 660 /* 661 * Fw doesn't use this sta anymore, pending deprecation via HOST API 662 * change 663 */ 664 } else { 665 tx_cmd[0].sta_id = 0xff; 666 tx_cmd[1].sta_id = 0xff; 667 } 668 669 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 670 TX_CMD_FLG_BT_DIS); 671 672 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 673 NL80211_BAND_5GHZ, 674 no_cck); 675 } 676 677 static void 678 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 679 struct ieee80211_channel **channels, 680 int n_channels, u32 ssid_bitmap, 681 struct iwl_scan_req_lmac *cmd) 682 { 683 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 684 int i; 685 686 for (i = 0; i < n_channels; i++) { 687 channel_cfg[i].channel_num = 688 cpu_to_le16(channels[i]->hw_value); 689 channel_cfg[i].iter_count = cpu_to_le16(1); 690 channel_cfg[i].iter_interval = 0; 691 channel_cfg[i].flags = 692 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 693 ssid_bitmap); 694 } 695 } 696 697 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 698 size_t len, u8 *const pos) 699 { 700 static const u8 before_ds_params[] = { 701 WLAN_EID_SSID, 702 WLAN_EID_SUPP_RATES, 703 WLAN_EID_REQUEST, 704 WLAN_EID_EXT_SUPP_RATES, 705 }; 706 size_t offs; 707 u8 *newpos = pos; 708 709 if (!iwl_mvm_rrm_scan_needed(mvm)) { 710 memcpy(newpos, ies, len); 711 return newpos + len; 712 } 713 714 offs = ieee80211_ie_split(ies, len, 715 before_ds_params, 716 ARRAY_SIZE(before_ds_params), 717 0); 718 719 memcpy(newpos, ies, offs); 720 newpos += offs; 721 722 /* Add a placeholder for DS Parameter Set element */ 723 *newpos++ = WLAN_EID_DS_PARAMS; 724 *newpos++ = 1; 725 *newpos++ = 0; 726 727 memcpy(newpos, ies + offs, len - offs); 728 newpos += len - offs; 729 730 return newpos; 731 } 732 733 #define WFA_TPC_IE_LEN 9 734 735 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 736 { 737 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 738 pos[1] = WFA_TPC_IE_LEN - 2; 739 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 740 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 741 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 742 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 743 pos[6] = 0; 744 /* pos[7] - tx power will be inserted by the FW */ 745 pos[7] = 0; 746 pos[8] = 0; 747 } 748 749 static void 750 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 751 struct ieee80211_scan_ies *ies, 752 struct iwl_mvm_scan_params *params) 753 { 754 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 755 u8 *pos, *newpos; 756 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 757 params->mac_addr : NULL; 758 759 /* 760 * Unfortunately, right now the offload scan doesn't support randomising 761 * within the firmware, so until the firmware API is ready we implement 762 * it in the driver. This means that the scan iterations won't really be 763 * random, only when it's restarted, but at least that helps a bit. 764 */ 765 if (mac_addr) 766 get_random_mask_addr(frame->sa, mac_addr, 767 params->mac_addr_mask); 768 else 769 memcpy(frame->sa, vif->addr, ETH_ALEN); 770 771 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 772 eth_broadcast_addr(frame->da); 773 eth_broadcast_addr(frame->bssid); 774 frame->seq_ctrl = 0; 775 776 pos = frame->u.probe_req.variable; 777 *pos++ = WLAN_EID_SSID; 778 *pos++ = 0; 779 780 params->preq.mac_header.offset = 0; 781 params->preq.mac_header.len = cpu_to_le16(24 + 2); 782 783 /* Insert ds parameter set element on 2.4 GHz band */ 784 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 785 ies->ies[NL80211_BAND_2GHZ], 786 ies->len[NL80211_BAND_2GHZ], 787 pos); 788 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 789 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 790 pos = newpos; 791 792 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 793 ies->len[NL80211_BAND_5GHZ]); 794 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 795 params->preq.band_data[1].len = 796 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 797 pos += ies->len[NL80211_BAND_5GHZ]; 798 799 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 800 ies->len[NL80211_BAND_6GHZ]); 801 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 802 params->preq.band_data[2].len = 803 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 804 pos += ies->len[NL80211_BAND_6GHZ]; 805 memcpy(pos, ies->common_ies, ies->common_ie_len); 806 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 807 808 if (iwl_mvm_rrm_scan_needed(mvm) && 809 !fw_has_capa(&mvm->fw->ucode_capa, 810 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 811 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 812 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 813 WFA_TPC_IE_LEN); 814 } else { 815 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 816 } 817 } 818 819 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 820 struct iwl_scan_req_lmac *cmd, 821 struct iwl_mvm_scan_params *params) 822 { 823 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 824 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 825 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 826 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 827 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 828 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 829 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 830 } 831 832 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 833 struct ieee80211_scan_ies *ies, 834 int n_channels) 835 { 836 return ((n_ssids <= PROBE_OPTION_MAX) && 837 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 838 (ies->common_ie_len + 839 ies->len[NL80211_BAND_2GHZ] + 840 ies->len[NL80211_BAND_5GHZ] <= 841 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 842 } 843 844 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 845 struct ieee80211_vif *vif) 846 { 847 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 848 bool low_latency; 849 850 if (iwl_mvm_is_cdb_supported(mvm)) 851 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 852 else 853 low_latency = iwl_mvm_low_latency(mvm); 854 855 /* We can only use EBS if: 856 * 1. the feature is supported; 857 * 2. the last EBS was successful; 858 * 3. if only single scan, the single scan EBS API is supported; 859 * 4. it's not a p2p find operation. 860 * 5. we are not in low latency mode, 861 * or if fragmented ebs is supported by the FW 862 */ 863 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 864 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 865 vif->type != NL80211_IFTYPE_P2P_DEVICE && 866 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 867 } 868 869 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 870 { 871 return params->n_scan_plans == 1 && 872 params->scan_plans[0].iterations == 1; 873 } 874 875 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 876 { 877 return (type == IWL_SCAN_TYPE_FRAGMENTED || 878 type == IWL_SCAN_TYPE_FAST_BALANCE); 879 } 880 881 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 882 struct iwl_mvm_scan_params *params, 883 struct ieee80211_vif *vif) 884 { 885 int flags = 0; 886 887 if (params->n_ssids == 0) 888 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 889 890 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 891 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 892 893 if (iwl_mvm_is_scan_fragmented(params->type)) 894 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 895 896 if (iwl_mvm_rrm_scan_needed(mvm) && 897 fw_has_capa(&mvm->fw->ucode_capa, 898 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 899 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 900 901 if (params->pass_all) 902 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 903 else 904 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 905 906 #ifdef CONFIG_IWLWIFI_DEBUGFS 907 if (mvm->scan_iter_notif_enabled) 908 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 909 #endif 910 911 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 912 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 913 914 if (iwl_mvm_is_regular_scan(params) && 915 vif->type != NL80211_IFTYPE_P2P_DEVICE && 916 !iwl_mvm_is_scan_fragmented(params->type)) 917 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 918 919 return flags; 920 } 921 922 static void 923 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 924 struct iwl_scan_probe_req *src_p_req) 925 { 926 int i; 927 928 p_req->mac_header = src_p_req->mac_header; 929 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 930 p_req->band_data[i] = src_p_req->band_data[i]; 931 p_req->common_data = src_p_req->common_data; 932 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 933 } 934 935 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 936 struct iwl_mvm_scan_params *params) 937 { 938 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 939 struct iwl_scan_probe_req_v1 *preq = 940 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 941 mvm->fw->ucode_capa.n_scan_channels); 942 u32 ssid_bitmap = 0; 943 int i; 944 u8 band; 945 946 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 947 return -EINVAL; 948 949 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 950 951 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 952 cmd->iter_num = cpu_to_le32(1); 953 cmd->n_channels = (u8)params->n_channels; 954 955 cmd->delay = cpu_to_le32(params->delay); 956 957 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 958 vif)); 959 960 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 961 cmd->flags = cpu_to_le32(band); 962 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 963 MAC_FILTER_IN_BEACON); 964 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 965 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 966 967 /* this API uses bits 1-20 instead of 0-19 */ 968 ssid_bitmap <<= 1; 969 970 for (i = 0; i < params->n_scan_plans; i++) { 971 struct cfg80211_sched_scan_plan *scan_plan = 972 ¶ms->scan_plans[i]; 973 974 cmd->schedule[i].delay = 975 cpu_to_le16(scan_plan->interval); 976 cmd->schedule[i].iterations = scan_plan->iterations; 977 cmd->schedule[i].full_scan_mul = 1; 978 } 979 980 /* 981 * If the number of iterations of the last scan plan is set to 982 * zero, it should run infinitely. However, this is not always the case. 983 * For example, when regular scan is requested the driver sets one scan 984 * plan with one iteration. 985 */ 986 if (!cmd->schedule[i - 1].iterations) 987 cmd->schedule[i - 1].iterations = 0xff; 988 989 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 990 cmd->channel_opt[0].flags = 991 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 992 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 993 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 994 cmd->channel_opt[0].non_ebs_ratio = 995 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 996 cmd->channel_opt[1].flags = 997 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 998 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 999 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1000 cmd->channel_opt[1].non_ebs_ratio = 1001 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1002 } 1003 1004 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1005 params->n_channels, ssid_bitmap, cmd); 1006 1007 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1008 1009 return 0; 1010 } 1011 1012 static int rate_to_scan_rate_flag(unsigned int rate) 1013 { 1014 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1015 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1016 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1017 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1018 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1019 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1020 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1021 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1022 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1023 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1024 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1025 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1026 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1027 }; 1028 1029 return rate_to_scan_rate[rate]; 1030 } 1031 1032 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1033 { 1034 struct ieee80211_supported_band *band; 1035 unsigned int rates = 0; 1036 int i; 1037 1038 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1039 for (i = 0; i < band->n_bitrates; i++) 1040 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1041 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1042 for (i = 0; i < band->n_bitrates; i++) 1043 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1044 1045 /* Set both basic rates and supported rates */ 1046 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1047 1048 return cpu_to_le32(rates); 1049 } 1050 1051 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1052 struct iwl_scan_dwell *dwell) 1053 { 1054 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1055 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1056 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1057 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1058 } 1059 1060 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1061 u32 max_channels) 1062 { 1063 struct ieee80211_supported_band *band; 1064 int i, j = 0; 1065 1066 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1067 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1068 channels[j] = band->channels[i].hw_value; 1069 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1070 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1071 channels[j] = band->channels[i].hw_value; 1072 } 1073 1074 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1075 u32 flags, u8 channel_flags, 1076 u32 max_channels) 1077 { 1078 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1079 struct iwl_scan_config_v1 *cfg = config; 1080 1081 cfg->flags = cpu_to_le32(flags); 1082 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1083 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1084 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1085 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1086 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1087 1088 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1089 1090 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1091 1092 /* This function should not be called when using ADD_STA ver >=12 */ 1093 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1094 ADD_STA, 0) >= 12); 1095 1096 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1097 cfg->channel_flags = channel_flags; 1098 1099 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1100 } 1101 1102 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1103 u32 flags, u8 channel_flags, 1104 u32 max_channels) 1105 { 1106 struct iwl_scan_config_v2 *cfg = config; 1107 1108 cfg->flags = cpu_to_le32(flags); 1109 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1110 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1111 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1112 1113 if (iwl_mvm_is_cdb_supported(mvm)) { 1114 enum iwl_mvm_scan_type lb_type, hb_type; 1115 1116 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1117 NL80211_BAND_2GHZ); 1118 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1119 NL80211_BAND_5GHZ); 1120 1121 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1122 cpu_to_le32(scan_timing[lb_type].max_out_time); 1123 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1124 cpu_to_le32(scan_timing[lb_type].suspend_time); 1125 1126 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1127 cpu_to_le32(scan_timing[hb_type].max_out_time); 1128 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1129 cpu_to_le32(scan_timing[hb_type].suspend_time); 1130 } else { 1131 enum iwl_mvm_scan_type type = 1132 iwl_mvm_get_scan_type(mvm, NULL); 1133 1134 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1135 cpu_to_le32(scan_timing[type].max_out_time); 1136 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1137 cpu_to_le32(scan_timing[type].suspend_time); 1138 } 1139 1140 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1141 1142 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1143 1144 /* This function should not be called when using ADD_STA ver >=12 */ 1145 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1146 ADD_STA, 0) >= 12); 1147 1148 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1149 cfg->channel_flags = channel_flags; 1150 1151 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1152 } 1153 1154 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1155 { 1156 void *cfg; 1157 int ret, cmd_size; 1158 struct iwl_host_cmd cmd = { 1159 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1160 }; 1161 enum iwl_mvm_scan_type type; 1162 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1163 int num_channels = 1164 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1165 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1166 u32 flags; 1167 u8 channel_flags; 1168 1169 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1170 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1171 1172 if (iwl_mvm_is_cdb_supported(mvm)) { 1173 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1174 NL80211_BAND_2GHZ); 1175 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1176 NL80211_BAND_5GHZ); 1177 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1178 return 0; 1179 } else { 1180 type = iwl_mvm_get_scan_type(mvm, NULL); 1181 if (type == mvm->scan_type) 1182 return 0; 1183 } 1184 1185 if (iwl_mvm_cdb_scan_api(mvm)) 1186 cmd_size = sizeof(struct iwl_scan_config_v2); 1187 else 1188 cmd_size = sizeof(struct iwl_scan_config_v1); 1189 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1190 1191 cfg = kzalloc(cmd_size, GFP_KERNEL); 1192 if (!cfg) 1193 return -ENOMEM; 1194 1195 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1196 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1197 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1198 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1199 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1200 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1201 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1202 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1203 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1204 SCAN_CONFIG_N_CHANNELS(num_channels) | 1205 (iwl_mvm_is_scan_fragmented(type) ? 1206 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1207 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1208 1209 channel_flags = IWL_CHANNEL_FLAG_EBS | 1210 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1211 IWL_CHANNEL_FLAG_EBS_ADD | 1212 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1213 1214 /* 1215 * Check for fragmented scan on LMAC2 - high band. 1216 * LMAC1 - low band is checked above. 1217 */ 1218 if (iwl_mvm_cdb_scan_api(mvm)) { 1219 if (iwl_mvm_is_cdb_supported(mvm)) 1220 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1221 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1222 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1223 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1224 num_channels); 1225 } else { 1226 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1227 num_channels); 1228 } 1229 1230 cmd.data[0] = cfg; 1231 cmd.len[0] = cmd_size; 1232 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1233 1234 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1235 1236 ret = iwl_mvm_send_cmd(mvm, &cmd); 1237 if (!ret) { 1238 mvm->scan_type = type; 1239 mvm->hb_scan_type = hb_type; 1240 } 1241 1242 kfree(cfg); 1243 return ret; 1244 } 1245 1246 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1247 { 1248 struct iwl_scan_config cfg; 1249 struct iwl_host_cmd cmd = { 1250 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1251 .len[0] = sizeof(cfg), 1252 .data[0] = &cfg, 1253 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1254 }; 1255 1256 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1257 return iwl_mvm_legacy_config_scan(mvm); 1258 1259 memset(&cfg, 0, sizeof(cfg)); 1260 1261 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1262 ADD_STA, 0) < 12) { 1263 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1264 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1265 SCAN_CFG_CMD, 0) < 5) { 1266 /* 1267 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1268 * version 5. 1269 */ 1270 cfg.bcast_sta_id = 0xff; 1271 } 1272 1273 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1274 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1275 1276 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1277 1278 return iwl_mvm_send_cmd(mvm, &cmd); 1279 } 1280 1281 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1282 { 1283 int i; 1284 1285 for (i = 0; i < mvm->max_scans; i++) 1286 if (mvm->scan_uid_status[i] == status) 1287 return i; 1288 1289 return -ENOENT; 1290 } 1291 1292 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1293 struct iwl_scan_req_umac *cmd, 1294 struct iwl_mvm_scan_params *params) 1295 { 1296 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1297 u8 active_dwell, passive_dwell; 1298 1299 timing = &scan_timing[params->type]; 1300 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1301 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1302 1303 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1304 cmd->v7.adwell_default_n_aps_social = 1305 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1306 cmd->v7.adwell_default_n_aps = 1307 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1308 1309 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1310 cmd->v9.adwell_default_hb_n_aps = 1311 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1312 1313 /* if custom max budget was configured with debugfs */ 1314 if (IWL_MVM_ADWELL_MAX_BUDGET) 1315 cmd->v7.adwell_max_budget = 1316 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1317 else if (params->ssids && params->ssids[0].ssid_len) 1318 cmd->v7.adwell_max_budget = 1319 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1320 else 1321 cmd->v7.adwell_max_budget = 1322 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1323 1324 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1325 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1326 cpu_to_le32(timing->max_out_time); 1327 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1328 cpu_to_le32(timing->suspend_time); 1329 1330 if (iwl_mvm_is_cdb_supported(mvm)) { 1331 hb_timing = &scan_timing[params->hb_type]; 1332 1333 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1334 cpu_to_le32(hb_timing->max_out_time); 1335 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1336 cpu_to_le32(hb_timing->suspend_time); 1337 } 1338 1339 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1340 cmd->v7.active_dwell = active_dwell; 1341 cmd->v7.passive_dwell = passive_dwell; 1342 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1343 } else { 1344 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1345 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1346 if (iwl_mvm_is_cdb_supported(mvm)) { 1347 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1348 active_dwell; 1349 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1350 passive_dwell; 1351 } 1352 } 1353 } else { 1354 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1355 cmd->v1.active_dwell = active_dwell; 1356 cmd->v1.passive_dwell = passive_dwell; 1357 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1358 1359 if (iwl_mvm_is_cdb_supported(mvm)) { 1360 hb_timing = &scan_timing[params->hb_type]; 1361 1362 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1363 cpu_to_le32(hb_timing->max_out_time); 1364 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1365 cpu_to_le32(hb_timing->suspend_time); 1366 } 1367 1368 if (iwl_mvm_cdb_scan_api(mvm)) { 1369 cmd->v6.scan_priority = 1370 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1371 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1372 cpu_to_le32(timing->max_out_time); 1373 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1374 cpu_to_le32(timing->suspend_time); 1375 } else { 1376 cmd->v1.scan_priority = 1377 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1378 cmd->v1.max_out_time = 1379 cpu_to_le32(timing->max_out_time); 1380 cmd->v1.suspend_time = 1381 cpu_to_le32(timing->suspend_time); 1382 } 1383 } 1384 1385 if (iwl_mvm_is_regular_scan(params)) 1386 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1387 else 1388 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1389 } 1390 1391 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1392 { 1393 return iwl_mvm_is_regular_scan(params) ? 1394 IWL_SCAN_PRIORITY_EXT_6 : 1395 IWL_SCAN_PRIORITY_EXT_2; 1396 } 1397 1398 static void 1399 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1400 struct iwl_scan_general_params_v11 *general_params, 1401 struct iwl_mvm_scan_params *params) 1402 { 1403 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1404 u8 active_dwell, passive_dwell; 1405 1406 timing = &scan_timing[params->type]; 1407 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1408 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1409 1410 general_params->adwell_default_social_chn = 1411 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1412 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1413 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1414 1415 /* if custom max budget was configured with debugfs */ 1416 if (IWL_MVM_ADWELL_MAX_BUDGET) 1417 general_params->adwell_max_budget = 1418 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1419 else if (params->ssids && params->ssids[0].ssid_len) 1420 general_params->adwell_max_budget = 1421 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1422 else 1423 general_params->adwell_max_budget = 1424 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1425 1426 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1427 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1428 cpu_to_le32(timing->max_out_time); 1429 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1430 cpu_to_le32(timing->suspend_time); 1431 1432 hb_timing = &scan_timing[params->hb_type]; 1433 1434 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1435 cpu_to_le32(hb_timing->max_out_time); 1436 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1437 cpu_to_le32(hb_timing->suspend_time); 1438 1439 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1440 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1441 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1442 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1443 } 1444 1445 struct iwl_mvm_scan_channel_segment { 1446 u8 start_idx; 1447 u8 end_idx; 1448 u8 first_channel_id; 1449 u8 last_channel_id; 1450 u8 channel_spacing_shift; 1451 u8 band; 1452 }; 1453 1454 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1455 { 1456 .start_idx = 0, 1457 .end_idx = 13, 1458 .first_channel_id = 1, 1459 .last_channel_id = 14, 1460 .channel_spacing_shift = 0, 1461 .band = PHY_BAND_24 1462 }, 1463 { 1464 .start_idx = 14, 1465 .end_idx = 41, 1466 .first_channel_id = 36, 1467 .last_channel_id = 144, 1468 .channel_spacing_shift = 2, 1469 .band = PHY_BAND_5 1470 }, 1471 { 1472 .start_idx = 42, 1473 .end_idx = 50, 1474 .first_channel_id = 149, 1475 .last_channel_id = 181, 1476 .channel_spacing_shift = 2, 1477 .band = PHY_BAND_5 1478 }, 1479 { 1480 .start_idx = 51, 1481 .end_idx = 111, 1482 .first_channel_id = 1, 1483 .last_channel_id = 241, 1484 .channel_spacing_shift = 2, 1485 .band = PHY_BAND_6 1486 }, 1487 }; 1488 1489 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1490 { 1491 int i, index; 1492 1493 if (!channel_id) 1494 return -EINVAL; 1495 1496 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1497 const struct iwl_mvm_scan_channel_segment *ch_segment = 1498 &scan_channel_segments[i]; 1499 u32 ch_offset; 1500 1501 if (ch_segment->band != band || 1502 ch_segment->first_channel_id > channel_id || 1503 ch_segment->last_channel_id < channel_id) 1504 continue; 1505 1506 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1507 ch_segment->channel_spacing_shift; 1508 1509 index = scan_channel_segments[i].start_idx + ch_offset; 1510 if (index < IWL_SCAN_NUM_CHANNELS) 1511 return index; 1512 1513 break; 1514 } 1515 1516 return -EINVAL; 1517 } 1518 1519 static const u8 p2p_go_friendly_chs[] = { 1520 36, 40, 44, 48, 149, 153, 157, 161, 165, 1521 }; 1522 1523 static const u8 social_chs[] = { 1524 1, 6, 11 1525 }; 1526 1527 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1528 u8 ch_id, u8 band, u8 *ch_bitmap, 1529 size_t bitmap_n_entries) 1530 { 1531 int i; 1532 1533 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1534 return; 1535 1536 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1537 if (p2p_go_friendly_chs[i] == ch_id) { 1538 int ch_idx, bitmap_idx; 1539 1540 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1541 if (ch_idx < 0) 1542 return; 1543 1544 bitmap_idx = ch_idx / 8; 1545 if (bitmap_idx >= bitmap_n_entries) 1546 return; 1547 1548 ch_idx = ch_idx % 8; 1549 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1550 1551 return; 1552 } 1553 } 1554 } 1555 1556 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1557 { 1558 int i; 1559 u32 flags = 0; 1560 1561 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1562 goto out; 1563 1564 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1565 if (p2p_go_friendly_chs[i] == ch_id) { 1566 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1567 break; 1568 } 1569 } 1570 1571 if (flags) 1572 goto out; 1573 1574 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1575 if (social_chs[i] == ch_id) { 1576 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1577 break; 1578 } 1579 } 1580 1581 out: 1582 return flags; 1583 } 1584 1585 static void 1586 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1587 struct ieee80211_channel **channels, 1588 int n_channels, u32 flags, 1589 struct iwl_scan_channel_cfg_umac *channel_cfg) 1590 { 1591 int i; 1592 1593 for (i = 0; i < n_channels; i++) { 1594 channel_cfg[i].flags = cpu_to_le32(flags); 1595 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1596 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1597 enum nl80211_band band = channels[i]->band; 1598 1599 channel_cfg[i].v2.band = 1600 iwl_mvm_phy_band_from_nl80211(band); 1601 channel_cfg[i].v2.iter_count = 1; 1602 channel_cfg[i].v2.iter_interval = 0; 1603 } else { 1604 channel_cfg[i].v1.iter_count = 1; 1605 channel_cfg[i].v1.iter_interval = 0; 1606 } 1607 } 1608 } 1609 1610 static void 1611 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1612 struct ieee80211_channel **channels, 1613 struct iwl_scan_channel_params_v4 *cp, 1614 int n_channels, u32 flags, 1615 enum nl80211_iftype vif_type) 1616 { 1617 u8 *bitmap = cp->adwell_ch_override_bitmap; 1618 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1619 int i; 1620 1621 for (i = 0; i < n_channels; i++) { 1622 enum nl80211_band band = channels[i]->band; 1623 struct iwl_scan_channel_cfg_umac *cfg = 1624 &cp->channel_config[i]; 1625 1626 cfg->flags = cpu_to_le32(flags); 1627 cfg->v2.channel_num = channels[i]->hw_value; 1628 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1629 cfg->v2.iter_count = 1; 1630 cfg->v2.iter_interval = 0; 1631 1632 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1633 cfg->v2.channel_num, 1634 cfg->v2.band, bitmap, 1635 bitmap_n_entries); 1636 } 1637 } 1638 1639 static void 1640 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1641 struct ieee80211_channel **channels, 1642 struct iwl_scan_channel_params_v6 *cp, 1643 int n_channels, u32 flags, 1644 enum nl80211_iftype vif_type) 1645 { 1646 int i; 1647 1648 for (i = 0; i < n_channels; i++) { 1649 enum nl80211_band band = channels[i]->band; 1650 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1651 u32 n_aps_flag = 1652 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1653 channels[i]->hw_value); 1654 1655 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1656 cfg->v2.channel_num = channels[i]->hw_value; 1657 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1658 if (cfg80211_channel_is_psc(channels[i])) 1659 cfg->flags = 0; 1660 cfg->v2.iter_count = 1; 1661 cfg->v2.iter_interval = 0; 1662 } 1663 } 1664 1665 static int 1666 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1667 struct iwl_mvm_scan_params *params, 1668 struct iwl_scan_probe_params_v4 *pp) 1669 { 1670 int j, idex_s = 0, idex_b = 0; 1671 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1672 params->scan_6ghz_params; 1673 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1674 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1675 1676 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1677 j++) { 1678 if (!params->ssids[j].ssid_len) 1679 continue; 1680 1681 pp->short_ssid[idex_s] = 1682 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1683 params->ssids[j].ssid_len)); 1684 1685 if (hidden_supported) { 1686 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1687 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1688 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1689 params->ssids[j].ssid_len); 1690 } 1691 idex_s++; 1692 } 1693 1694 /* 1695 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1696 * collocated parameters. This might not be optimal, as this processing 1697 * does not (yet) correspond to the actual channels, so it is possible 1698 * that some entries would be left out. 1699 * 1700 * TODO: improve this logic. 1701 */ 1702 for (j = 0; j < params->n_6ghz_params; j++) { 1703 int k; 1704 1705 /* First, try to place the short SSID */ 1706 if (scan_6ghz_params[j].short_ssid_valid) { 1707 for (k = 0; k < idex_s; k++) { 1708 if (pp->short_ssid[k] == 1709 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1710 break; 1711 } 1712 1713 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1714 pp->short_ssid[idex_s++] = 1715 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1716 } 1717 } 1718 1719 /* try to place BSSID for the same entry */ 1720 for (k = 0; k < idex_b; k++) { 1721 if (!memcmp(&pp->bssid_array[k], 1722 scan_6ghz_params[j].bssid, ETH_ALEN)) 1723 break; 1724 } 1725 1726 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1727 memcpy(&pp->bssid_array[idex_b++], 1728 scan_6ghz_params[j].bssid, ETH_ALEN); 1729 } 1730 } 1731 1732 pp->short_ssid_num = idex_s; 1733 pp->bssid_num = idex_b; 1734 return 0; 1735 } 1736 1737 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1738 static void 1739 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm_scan_params *params, 1740 u32 n_channels, 1741 struct iwl_scan_probe_params_v4 *pp, 1742 struct iwl_scan_channel_params_v6 *cp, 1743 enum nl80211_iftype vif_type) 1744 { 1745 struct iwl_scan_channel_cfg_umac *channel_cfg = cp->channel_config; 1746 int i; 1747 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1748 params->scan_6ghz_params; 1749 1750 for (i = 0; i < params->n_channels; i++) { 1751 struct iwl_scan_channel_cfg_umac *cfg = 1752 &cp->channel_config[i]; 1753 1754 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1755 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1756 bool force_passive, found = false, allow_passive = true, 1757 unsolicited_probe_on_chan = false, psc_no_listen = false; 1758 1759 cfg->v1.channel_num = params->channels[i]->hw_value; 1760 cfg->v2.band = 2; 1761 cfg->v2.iter_count = 1; 1762 cfg->v2.iter_interval = 0; 1763 1764 /* 1765 * The optimize the scan time, i.e., reduce the scan dwell time 1766 * on each channel, the below logic tries to set 3 direct BSSID 1767 * probe requests for each broadcast probe request with a short 1768 * SSID. 1769 * TODO: improve this logic 1770 */ 1771 n_used_bssid_entries = 3; 1772 for (j = 0; j < params->n_6ghz_params; j++) { 1773 if (!(scan_6ghz_params[j].channel_idx == i)) 1774 continue; 1775 1776 found = false; 1777 unsolicited_probe_on_chan |= 1778 scan_6ghz_params[j].unsolicited_probe; 1779 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1780 1781 for (k = 0; k < pp->short_ssid_num; k++) { 1782 if (!scan_6ghz_params[j].unsolicited_probe && 1783 le32_to_cpu(pp->short_ssid[k]) == 1784 scan_6ghz_params[j].short_ssid) { 1785 /* Relevant short SSID bit set */ 1786 if (s_ssid_bitmap & BIT(k)) { 1787 found = true; 1788 break; 1789 } 1790 1791 /* 1792 * Use short SSID only to create a new 1793 * iteration during channel dwell or in 1794 * case that the short SSID has a 1795 * matching SSID, i.e., scan for hidden 1796 * APs. 1797 */ 1798 if (n_used_bssid_entries >= 3) { 1799 s_ssid_bitmap |= BIT(k); 1800 s_max++; 1801 n_used_bssid_entries -= 3; 1802 found = true; 1803 break; 1804 } else if (pp->direct_scan[k].len) { 1805 s_ssid_bitmap |= BIT(k); 1806 s_max++; 1807 found = true; 1808 allow_passive = false; 1809 break; 1810 } 1811 } 1812 } 1813 1814 if (found) 1815 continue; 1816 1817 for (k = 0; k < pp->bssid_num; k++) { 1818 if (!memcmp(&pp->bssid_array[k], 1819 scan_6ghz_params[j].bssid, 1820 ETH_ALEN)) { 1821 if (!(bssid_bitmap & BIT(k))) { 1822 bssid_bitmap |= BIT(k); 1823 b_max++; 1824 n_used_bssid_entries++; 1825 } 1826 break; 1827 } 1828 } 1829 } 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 (!(bssid_bitmap | s_ssid_bitmap) && 1873 !cfg80211_channel_is_psc(params->channels[i]))) 1874 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1875 else 1876 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1877 1878 channel_cfg[i].flags |= cpu_to_le32(flags); 1879 } 1880 } 1881 1882 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1883 struct iwl_mvm_scan_params *params, 1884 struct ieee80211_vif *vif) 1885 { 1886 u8 flags = 0; 1887 1888 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1889 1890 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1891 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1892 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1893 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1894 1895 /* set fragmented ebs for fragmented scan on HB channels */ 1896 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1897 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1898 1899 return flags; 1900 } 1901 1902 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1903 struct iwl_mvm_scan_params *params, 1904 struct ieee80211_vif *vif) 1905 { 1906 struct ieee80211_supported_band *sband = 1907 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1908 u32 n_disabled, i; 1909 1910 params->enable_6ghz_passive = false; 1911 1912 if (params->scan_6ghz) 1913 return; 1914 1915 if (!fw_has_capa(&mvm->fw->ucode_capa, 1916 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 1917 IWL_DEBUG_SCAN(mvm, 1918 "6GHz passive scan: Not supported by FW\n"); 1919 return; 1920 } 1921 1922 /* 6GHz passive scan allowed only on station interface */ 1923 if (vif->type != NL80211_IFTYPE_STATION) { 1924 IWL_DEBUG_SCAN(mvm, 1925 "6GHz passive scan: not station interface\n"); 1926 return; 1927 } 1928 1929 /* 1930 * 6GHz passive scan is allowed in a defined time interval following HW 1931 * reset or resume flow, or while not associated and a large interval 1932 * has passed since the last 6GHz passive scan. 1933 */ 1934 if ((vif->bss_conf.assoc || 1935 time_after(mvm->last_6ghz_passive_scan_jiffies + 1936 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 1937 (time_before(mvm->last_reset_or_resume_time_jiffies + 1938 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 1939 jiffies))) { 1940 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 1941 vif->bss_conf.assoc ? "associated" : 1942 "timeout did not expire"); 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 /* 1999 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2000 * if there is a single SSID which is not the broadcast SSID, assume 2001 * that the scan is intended for roaming purposes and thus enable Rx on 2002 * all chains to improve chances of hearing the beacons/probe responses. 2003 */ 2004 if (params->n_ssids == 0) 2005 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2006 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2007 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2008 2009 if (iwl_mvm_is_scan_fragmented(params->type)) 2010 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2011 2012 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2013 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2014 2015 if (params->pass_all) 2016 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2017 else 2018 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2019 2020 if (!iwl_mvm_is_regular_scan(params)) 2021 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2022 2023 if (params->iter_notif || 2024 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2025 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2026 2027 if (IWL_MVM_ADWELL_ENABLE) 2028 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2029 2030 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2031 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2032 2033 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2034 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2035 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2036 2037 if (params->enable_6ghz_passive) 2038 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2039 2040 if (iwl_mvm_is_oce_supported(mvm) && 2041 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2042 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2043 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2044 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2045 2046 return flags; 2047 } 2048 2049 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2050 struct iwl_mvm_scan_params *params, 2051 struct ieee80211_vif *vif) 2052 { 2053 u16 flags = 0; 2054 2055 if (params->n_ssids == 0) 2056 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2057 2058 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2059 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2060 2061 if (iwl_mvm_is_scan_fragmented(params->type)) 2062 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2063 2064 if (iwl_mvm_is_cdb_supported(mvm) && 2065 iwl_mvm_is_scan_fragmented(params->hb_type)) 2066 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2067 2068 if (iwl_mvm_rrm_scan_needed(mvm) && 2069 fw_has_capa(&mvm->fw->ucode_capa, 2070 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2071 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2072 2073 if (params->pass_all) 2074 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2075 else 2076 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2077 2078 if (!iwl_mvm_is_regular_scan(params)) 2079 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2080 2081 if (params->iter_notif) 2082 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2083 2084 #ifdef CONFIG_IWLWIFI_DEBUGFS 2085 if (mvm->scan_iter_notif_enabled) 2086 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2087 #endif 2088 2089 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2090 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2091 2092 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2093 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2094 2095 /* 2096 * Extended dwell is relevant only for low band to start with, as it is 2097 * being used for social channles only (1, 6, 11), so we can check 2098 * only scan type on low band also for CDB. 2099 */ 2100 if (iwl_mvm_is_regular_scan(params) && 2101 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2102 !iwl_mvm_is_scan_fragmented(params->type) && 2103 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2104 !iwl_mvm_is_oce_supported(mvm)) 2105 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2106 2107 if (iwl_mvm_is_oce_supported(mvm)) { 2108 if ((params->flags & 2109 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2110 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2111 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2112 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2113 * the same bit, we need to make sure that we use this bit here 2114 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2115 * used. */ 2116 if ((params->flags & 2117 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2118 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2119 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2120 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2121 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2122 } 2123 2124 return flags; 2125 } 2126 2127 static int 2128 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2129 struct iwl_scan_umac_schedule *schedule, 2130 __le16 *delay) 2131 { 2132 int i; 2133 if (WARN_ON(!params->n_scan_plans || 2134 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2135 return -EINVAL; 2136 2137 for (i = 0; i < params->n_scan_plans; i++) { 2138 struct cfg80211_sched_scan_plan *scan_plan = 2139 ¶ms->scan_plans[i]; 2140 2141 schedule[i].iter_count = scan_plan->iterations; 2142 schedule[i].interval = 2143 cpu_to_le16(scan_plan->interval); 2144 } 2145 2146 /* 2147 * If the number of iterations of the last scan plan is set to 2148 * zero, it should run infinitely. However, this is not always the case. 2149 * For example, when regular scan is requested the driver sets one scan 2150 * plan with one iteration. 2151 */ 2152 if (!schedule[params->n_scan_plans - 1].iter_count) 2153 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2154 2155 *delay = cpu_to_le16(params->delay); 2156 2157 return 0; 2158 } 2159 2160 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2161 struct iwl_mvm_scan_params *params, 2162 int type, int uid) 2163 { 2164 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2165 struct iwl_scan_umac_chan_param *chan_param; 2166 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2167 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2168 mvm->fw->ucode_capa.n_scan_channels; 2169 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2170 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2171 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2172 struct iwl_ssid_ie *direct_scan; 2173 int ret = 0; 2174 u32 ssid_bitmap = 0; 2175 u8 channel_flags = 0; 2176 u16 gen_flags; 2177 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2178 2179 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2180 2181 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2182 2183 mvm->scan_uid_status[uid] = type; 2184 2185 cmd->uid = cpu_to_le32(uid); 2186 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2187 cmd->general_flags = cpu_to_le16(gen_flags); 2188 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2189 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2190 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2191 IWL_SCAN_NUM_OF_FRAGS; 2192 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2193 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2194 IWL_SCAN_NUM_OF_FRAGS; 2195 2196 cmd->v8.general_flags2 = 2197 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2198 } 2199 2200 cmd->scan_start_mac_id = scan_vif->id; 2201 2202 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2203 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2204 2205 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2206 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2207 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2208 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2209 2210 /* set fragmented ebs for fragmented scan on HB channels */ 2211 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2212 if (gen_flags & 2213 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2214 (!iwl_mvm_is_cdb_supported(mvm) && 2215 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2216 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2217 } 2218 } 2219 2220 chan_param->flags = channel_flags; 2221 chan_param->count = params->n_channels; 2222 2223 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2224 &tail_v2->delay); 2225 if (ret) { 2226 mvm->scan_uid_status[uid] = 0; 2227 return ret; 2228 } 2229 2230 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2231 tail_v2->preq = params->preq; 2232 direct_scan = tail_v2->direct_scan; 2233 } else { 2234 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2235 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2236 ¶ms->preq); 2237 direct_scan = tail_v1->direct_scan; 2238 } 2239 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2240 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2241 params->n_channels, ssid_bitmap, 2242 cmd_data); 2243 return 0; 2244 } 2245 2246 static void 2247 iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm, 2248 struct iwl_mvm_scan_params *params, 2249 struct ieee80211_vif *vif, 2250 struct iwl_scan_general_params_v11 *gp, 2251 u16 gen_flags) 2252 { 2253 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2254 2255 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2256 2257 gp->flags = cpu_to_le16(gen_flags); 2258 2259 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2260 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2261 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2262 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2263 2264 gp->scan_start_mac_id = scan_vif->id; 2265 } 2266 2267 static void 2268 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2269 struct iwl_scan_probe_params_v3 *pp) 2270 { 2271 pp->preq = params->preq; 2272 pp->ssid_num = params->n_ssids; 2273 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2274 } 2275 2276 static void 2277 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2278 struct iwl_scan_probe_params_v4 *pp, 2279 u32 *bitmap_ssid) 2280 { 2281 pp->preq = params->preq; 2282 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2283 } 2284 2285 static void 2286 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2287 struct iwl_mvm_scan_params *params, 2288 struct ieee80211_vif *vif, 2289 struct iwl_scan_channel_params_v4 *cp, 2290 u32 channel_cfg_flags) 2291 { 2292 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2293 cp->count = params->n_channels; 2294 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2295 2296 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2297 params->n_channels, 2298 channel_cfg_flags, 2299 vif->type); 2300 } 2301 2302 static void 2303 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2304 struct iwl_mvm_scan_params *params, 2305 struct ieee80211_vif *vif, 2306 struct iwl_scan_channel_params_v6 *cp, 2307 u32 channel_cfg_flags) 2308 { 2309 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2310 cp->count = params->n_channels; 2311 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2312 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2313 2314 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2315 params->n_channels, 2316 channel_cfg_flags, 2317 vif->type); 2318 2319 if (params->enable_6ghz_passive) { 2320 struct ieee80211_supported_band *sband = 2321 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2322 u32 i; 2323 2324 for (i = 0; i < sband->n_channels; i++) { 2325 struct ieee80211_channel *channel = 2326 &sband->channels[i]; 2327 2328 struct iwl_scan_channel_cfg_umac *cfg = 2329 &cp->channel_config[cp->count]; 2330 2331 if (!cfg80211_channel_is_psc(channel)) 2332 continue; 2333 2334 cfg->flags = 0; 2335 cfg->v2.channel_num = channel->hw_value; 2336 cfg->v2.band = PHY_BAND_6; 2337 cfg->v2.iter_count = 1; 2338 cfg->v2.iter_interval = 0; 2339 cp->count++; 2340 } 2341 } 2342 } 2343 2344 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2345 struct iwl_mvm_scan_params *params, int type, 2346 int uid) 2347 { 2348 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2349 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2350 int ret; 2351 u16 gen_flags; 2352 2353 mvm->scan_uid_status[uid] = type; 2354 2355 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2356 cmd->uid = cpu_to_le32(uid); 2357 2358 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2359 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2360 &scan_p->general_params, 2361 gen_flags); 2362 2363 ret = iwl_mvm_fill_scan_sched_params(params, 2364 scan_p->periodic_params.schedule, 2365 &scan_p->periodic_params.delay); 2366 if (ret) 2367 return ret; 2368 2369 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2370 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2371 &scan_p->channel_params, 0); 2372 2373 return 0; 2374 } 2375 2376 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2377 struct ieee80211_vif *vif, 2378 struct iwl_mvm_scan_params *params, 2379 int type, int uid, u32 version) 2380 { 2381 struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd; 2382 struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params; 2383 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2384 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2385 int ret; 2386 u16 gen_flags; 2387 u32 bitmap_ssid = 0; 2388 2389 mvm->scan_uid_status[uid] = type; 2390 2391 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2392 cmd->uid = cpu_to_le32(uid); 2393 2394 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2395 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif, 2396 &scan_p->general_params, 2397 gen_flags); 2398 2399 ret = iwl_mvm_fill_scan_sched_params(params, 2400 scan_p->periodic_params.schedule, 2401 &scan_p->periodic_params.delay); 2402 if (ret) 2403 return ret; 2404 2405 if (!params->scan_6ghz) { 2406 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2407 &bitmap_ssid); 2408 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2409 &scan_p->channel_params, bitmap_ssid); 2410 2411 return 0; 2412 } else { 2413 pb->preq = params->preq; 2414 } 2415 2416 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2417 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2418 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2419 2420 ret = iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2421 if (ret) 2422 return ret; 2423 2424 iwl_mvm_umac_scan_cfg_channels_v6_6g(params, 2425 params->n_channels, 2426 pb, cp, vif->type); 2427 cp->count = params->n_channels; 2428 if (!params->n_ssids || 2429 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2430 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2431 2432 return 0; 2433 } 2434 2435 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2436 struct iwl_mvm_scan_params *params, int type, 2437 int uid) 2438 { 2439 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2440 } 2441 2442 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2443 struct iwl_mvm_scan_params *params, int type, 2444 int uid) 2445 { 2446 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2447 } 2448 2449 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2450 { 2451 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2452 } 2453 2454 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2455 { 2456 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2457 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2458 2459 /* This looks a bit arbitrary, but the idea is that if we run 2460 * out of possible simultaneous scans and the userspace is 2461 * trying to run a scan type that is already running, we 2462 * return -EBUSY. But if the userspace wants to start a 2463 * different type of scan, we stop the opposite type to make 2464 * space for the new request. The reason is backwards 2465 * compatibility with old wpa_supplicant that wouldn't stop a 2466 * scheduled scan before starting a normal scan. 2467 */ 2468 2469 /* FW supports only a single periodic scan */ 2470 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2471 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2472 return -EBUSY; 2473 2474 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2475 return 0; 2476 2477 /* Use a switch, even though this is a bitmask, so that more 2478 * than one bits set will fall in default and we will warn. 2479 */ 2480 switch (type) { 2481 case IWL_MVM_SCAN_REGULAR: 2482 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2483 return -EBUSY; 2484 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2485 case IWL_MVM_SCAN_SCHED: 2486 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2487 return -EBUSY; 2488 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2489 case IWL_MVM_SCAN_NETDETECT: 2490 /* For non-unified images, there's no need to stop 2491 * anything for net-detect since the firmware is 2492 * restarted anyway. This way, any sched scans that 2493 * were running will be restarted when we resume. 2494 */ 2495 if (!unified_image) 2496 return 0; 2497 2498 /* If this is a unified image and we ran out of scans, 2499 * we need to stop something. Prefer stopping regular 2500 * scans, because the results are useless at this 2501 * point, and we should be able to keep running 2502 * another scheduled scan while suspended. 2503 */ 2504 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2505 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2506 true); 2507 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2508 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2509 true); 2510 /* Something is wrong if no scan was running but we 2511 * ran out of scans. 2512 */ 2513 fallthrough; 2514 default: 2515 WARN_ON(1); 2516 break; 2517 } 2518 2519 return -EIO; 2520 } 2521 2522 #define SCAN_TIMEOUT 30000 2523 2524 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2525 { 2526 struct delayed_work *delayed_work = to_delayed_work(work); 2527 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2528 scan_timeout_dwork); 2529 2530 IWL_ERR(mvm, "regular scan timed out\n"); 2531 2532 iwl_force_nmi(mvm->trans); 2533 } 2534 2535 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2536 struct iwl_mvm_scan_params *params, 2537 struct ieee80211_vif *vif) 2538 { 2539 if (iwl_mvm_is_cdb_supported(mvm)) { 2540 params->type = 2541 iwl_mvm_get_scan_type_band(mvm, vif, 2542 NL80211_BAND_2GHZ); 2543 params->hb_type = 2544 iwl_mvm_get_scan_type_band(mvm, vif, 2545 NL80211_BAND_5GHZ); 2546 } else { 2547 params->type = iwl_mvm_get_scan_type(mvm, vif); 2548 } 2549 } 2550 2551 struct iwl_scan_umac_handler { 2552 u8 version; 2553 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2554 struct iwl_mvm_scan_params *params, int type, int uid); 2555 }; 2556 2557 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2558 .version = _ver, \ 2559 .handler = iwl_mvm_scan_umac_v##_ver, \ 2560 } 2561 2562 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2563 /* set the newest version first to shorten the list traverse time */ 2564 IWL_SCAN_UMAC_HANDLER(15), 2565 IWL_SCAN_UMAC_HANDLER(14), 2566 IWL_SCAN_UMAC_HANDLER(12), 2567 }; 2568 2569 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2570 struct ieee80211_vif *vif, 2571 struct iwl_host_cmd *hcmd, 2572 struct iwl_mvm_scan_params *params, 2573 int type) 2574 { 2575 int uid, i, err; 2576 u8 scan_ver; 2577 2578 lockdep_assert_held(&mvm->mutex); 2579 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2580 2581 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2582 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2583 2584 return iwl_mvm_scan_lmac(mvm, vif, params); 2585 } 2586 2587 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2588 if (uid < 0) 2589 return uid; 2590 2591 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2592 2593 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2594 SCAN_REQ_UMAC, 2595 IWL_FW_CMD_VER_UNKNOWN); 2596 2597 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2598 const struct iwl_scan_umac_handler *ver_handler = 2599 &iwl_scan_umac_handlers[i]; 2600 2601 if (ver_handler->version != scan_ver) 2602 continue; 2603 2604 return ver_handler->handler(mvm, vif, params, type, uid); 2605 } 2606 2607 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2608 if (err) 2609 return err; 2610 2611 return uid; 2612 } 2613 2614 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2615 struct cfg80211_scan_request *req, 2616 struct ieee80211_scan_ies *ies) 2617 { 2618 struct iwl_host_cmd hcmd = { 2619 .len = { iwl_mvm_scan_size(mvm), }, 2620 .data = { mvm->scan_cmd, }, 2621 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2622 }; 2623 struct iwl_mvm_scan_params params = {}; 2624 int ret, uid; 2625 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2626 2627 lockdep_assert_held(&mvm->mutex); 2628 2629 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2630 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2631 return -EBUSY; 2632 } 2633 2634 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2635 if (ret) 2636 return ret; 2637 2638 /* we should have failed registration if scan_cmd was NULL */ 2639 if (WARN_ON(!mvm->scan_cmd)) 2640 return -ENOMEM; 2641 2642 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2643 return -ENOBUFS; 2644 2645 params.n_ssids = req->n_ssids; 2646 params.flags = req->flags; 2647 params.n_channels = req->n_channels; 2648 params.delay = 0; 2649 params.ssids = req->ssids; 2650 params.channels = req->channels; 2651 params.mac_addr = req->mac_addr; 2652 params.mac_addr_mask = req->mac_addr_mask; 2653 params.no_cck = req->no_cck; 2654 params.pass_all = true; 2655 params.n_match_sets = 0; 2656 params.match_sets = NULL; 2657 2658 params.scan_plans = &scan_plan; 2659 params.n_scan_plans = 1; 2660 2661 params.n_6ghz_params = req->n_6ghz_params; 2662 params.scan_6ghz_params = req->scan_6ghz_params; 2663 params.scan_6ghz = req->scan_6ghz; 2664 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2665 2666 if (req->duration) 2667 params.iter_notif = true; 2668 2669 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2670 2671 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 2672 2673 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2674 IWL_MVM_SCAN_REGULAR); 2675 2676 if (uid < 0) 2677 return uid; 2678 2679 iwl_mvm_pause_tcm(mvm, false); 2680 2681 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2682 if (ret) { 2683 /* If the scan failed, it usually means that the FW was unable 2684 * to allocate the time events. Warn on it, but maybe we 2685 * should try to send the command again with different params. 2686 */ 2687 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2688 iwl_mvm_resume_tcm(mvm); 2689 mvm->scan_uid_status[uid] = 0; 2690 return ret; 2691 } 2692 2693 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2694 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2695 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2696 2697 if (params.enable_6ghz_passive) 2698 mvm->last_6ghz_passive_scan_jiffies = jiffies; 2699 2700 schedule_delayed_work(&mvm->scan_timeout_dwork, 2701 msecs_to_jiffies(SCAN_TIMEOUT)); 2702 2703 return 0; 2704 } 2705 2706 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2707 struct ieee80211_vif *vif, 2708 struct cfg80211_sched_scan_request *req, 2709 struct ieee80211_scan_ies *ies, 2710 int type) 2711 { 2712 struct iwl_host_cmd hcmd = { 2713 .len = { iwl_mvm_scan_size(mvm), }, 2714 .data = { mvm->scan_cmd, }, 2715 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2716 }; 2717 struct iwl_mvm_scan_params params = {}; 2718 int ret, uid; 2719 int i, j; 2720 bool non_psc_included = false; 2721 2722 lockdep_assert_held(&mvm->mutex); 2723 2724 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2725 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2726 return -EBUSY; 2727 } 2728 2729 ret = iwl_mvm_check_running_scans(mvm, type); 2730 if (ret) 2731 return ret; 2732 2733 /* we should have failed registration if scan_cmd was NULL */ 2734 if (WARN_ON(!mvm->scan_cmd)) 2735 return -ENOMEM; 2736 2737 2738 params.n_ssids = req->n_ssids; 2739 params.flags = req->flags; 2740 params.n_channels = req->n_channels; 2741 params.ssids = req->ssids; 2742 params.channels = req->channels; 2743 params.mac_addr = req->mac_addr; 2744 params.mac_addr_mask = req->mac_addr_mask; 2745 params.no_cck = false; 2746 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2747 params.n_match_sets = req->n_match_sets; 2748 params.match_sets = req->match_sets; 2749 if (!req->n_scan_plans) 2750 return -EINVAL; 2751 2752 params.n_scan_plans = req->n_scan_plans; 2753 params.scan_plans = req->scan_plans; 2754 2755 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2756 2757 /* In theory, LMAC scans can handle a 32-bit delay, but since 2758 * waiting for over 18 hours to start the scan is a bit silly 2759 * and to keep it aligned with UMAC scans (which only support 2760 * 16-bit delays), trim it down to 16-bits. 2761 */ 2762 if (req->delay > U16_MAX) { 2763 IWL_DEBUG_SCAN(mvm, 2764 "delay value is > 16-bits, set to max possible\n"); 2765 params.delay = U16_MAX; 2766 } else { 2767 params.delay = req->delay; 2768 } 2769 2770 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2771 if (ret) 2772 return ret; 2773 2774 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2775 2776 /* for 6 GHZ band only PSC channels need to be added */ 2777 for (i = 0; i < params.n_channels; i++) { 2778 struct ieee80211_channel *channel = params.channels[i]; 2779 2780 if (channel->band == NL80211_BAND_6GHZ && 2781 !cfg80211_channel_is_psc(channel)) { 2782 non_psc_included = true; 2783 break; 2784 } 2785 } 2786 2787 if (non_psc_included) { 2788 params.channels = kmemdup(params.channels, 2789 sizeof(params.channels[0]) * 2790 params.n_channels, 2791 GFP_KERNEL); 2792 if (!params.channels) 2793 return -ENOMEM; 2794 2795 for (i = j = 0; i < params.n_channels; i++) { 2796 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2797 !cfg80211_channel_is_psc(params.channels[i])) 2798 continue; 2799 params.channels[j++] = params.channels[i]; 2800 } 2801 params.n_channels = j; 2802 } 2803 2804 if (non_psc_included && 2805 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2806 kfree(params.channels); 2807 return -ENOBUFS; 2808 } 2809 2810 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2811 2812 if (non_psc_included) 2813 kfree(params.channels); 2814 if (uid < 0) 2815 return uid; 2816 2817 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2818 if (!ret) { 2819 IWL_DEBUG_SCAN(mvm, 2820 "Sched scan request was sent successfully\n"); 2821 mvm->scan_status |= type; 2822 } else { 2823 /* If the scan failed, it usually means that the FW was unable 2824 * to allocate the time events. Warn on it, but maybe we 2825 * should try to send the command again with different params. 2826 */ 2827 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2828 mvm->scan_uid_status[uid] = 0; 2829 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2830 } 2831 2832 return ret; 2833 } 2834 2835 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2836 struct iwl_rx_cmd_buffer *rxb) 2837 { 2838 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2839 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2840 u32 uid = __le32_to_cpu(notif->uid); 2841 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2842 2843 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2844 return; 2845 2846 /* if the scan is already stopping, we don't need to notify mac80211 */ 2847 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2848 struct cfg80211_scan_info info = { 2849 .aborted = aborted, 2850 .scan_start_tsf = mvm->scan_start, 2851 }; 2852 2853 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2854 ieee80211_scan_completed(mvm->hw, &info); 2855 mvm->scan_vif = NULL; 2856 cancel_delayed_work(&mvm->scan_timeout_dwork); 2857 iwl_mvm_resume_tcm(mvm); 2858 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2859 ieee80211_sched_scan_stopped(mvm->hw); 2860 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2861 } 2862 2863 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2864 IWL_DEBUG_SCAN(mvm, 2865 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2866 uid, mvm->scan_uid_status[uid], 2867 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2868 "completed" : "aborted", 2869 iwl_mvm_ebs_status_str(notif->ebs_status)); 2870 IWL_DEBUG_SCAN(mvm, 2871 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2872 notif->last_schedule, notif->last_iter, 2873 __le32_to_cpu(notif->time_from_last_iter)); 2874 2875 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2876 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2877 mvm->last_ebs_successful = false; 2878 2879 mvm->scan_uid_status[uid] = 0; 2880 } 2881 2882 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2883 struct iwl_rx_cmd_buffer *rxb) 2884 { 2885 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2886 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2887 2888 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2889 2890 IWL_DEBUG_SCAN(mvm, 2891 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2892 notif->status, notif->scanned_channels); 2893 2894 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2895 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2896 ieee80211_sched_scan_results(mvm->hw); 2897 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2898 } 2899 2900 IWL_DEBUG_SCAN(mvm, 2901 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2902 mvm->scan_start); 2903 } 2904 2905 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2906 { 2907 struct iwl_umac_scan_abort cmd = {}; 2908 int uid, ret; 2909 2910 lockdep_assert_held(&mvm->mutex); 2911 2912 /* We should always get a valid index here, because we already 2913 * checked that this type of scan was running in the generic 2914 * code. 2915 */ 2916 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2917 if (WARN_ON_ONCE(uid < 0)) 2918 return uid; 2919 2920 cmd.uid = cpu_to_le32(uid); 2921 2922 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2923 2924 ret = iwl_mvm_send_cmd_pdu(mvm, 2925 iwl_cmd_id(SCAN_ABORT_UMAC, 2926 IWL_ALWAYS_LONG_GROUP, 0), 2927 0, sizeof(cmd), &cmd); 2928 if (!ret) 2929 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2930 2931 return ret; 2932 } 2933 2934 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2935 { 2936 struct iwl_notification_wait wait_scan_done; 2937 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2938 SCAN_OFFLOAD_COMPLETE, }; 2939 int ret; 2940 2941 lockdep_assert_held(&mvm->mutex); 2942 2943 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2944 scan_done_notif, 2945 ARRAY_SIZE(scan_done_notif), 2946 NULL, NULL); 2947 2948 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2949 2950 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2951 ret = iwl_mvm_umac_scan_abort(mvm, type); 2952 else 2953 ret = iwl_mvm_lmac_scan_abort(mvm); 2954 2955 if (ret) { 2956 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2957 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2958 return ret; 2959 } 2960 2961 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2962 1 * HZ); 2963 } 2964 2965 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2966 { 2967 switch (scan_ver) { 2968 case 12: 2969 return sizeof(struct iwl_scan_req_umac_v12); 2970 case 14: 2971 case 15: 2972 return sizeof(struct iwl_scan_req_umac_v15); 2973 } 2974 2975 return 0; 2976 } 2977 2978 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2979 { 2980 int base_size, tail_size; 2981 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2982 SCAN_REQ_UMAC, 2983 IWL_FW_CMD_VER_UNKNOWN); 2984 2985 base_size = iwl_scan_req_umac_get_size(scan_ver); 2986 if (base_size) 2987 return base_size; 2988 2989 2990 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2991 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2992 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2993 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2994 else if (iwl_mvm_cdb_scan_api(mvm)) 2995 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2996 else 2997 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2998 2999 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3000 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3001 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3002 else 3003 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3004 3005 return base_size + 3006 sizeof(struct iwl_scan_channel_cfg_umac) * 3007 mvm->fw->ucode_capa.n_scan_channels + 3008 tail_size; 3009 } 3010 return sizeof(struct iwl_scan_req_lmac) + 3011 sizeof(struct iwl_scan_channel_cfg_lmac) * 3012 mvm->fw->ucode_capa.n_scan_channels + 3013 sizeof(struct iwl_scan_probe_req_v1); 3014 } 3015 3016 /* 3017 * This function is used in nic restart flow, to inform mac80211 about scans 3018 * that was aborted by restart flow or by an assert. 3019 */ 3020 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3021 { 3022 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3023 int uid, i; 3024 3025 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3026 if (uid >= 0) { 3027 struct cfg80211_scan_info info = { 3028 .aborted = true, 3029 }; 3030 3031 cancel_delayed_work(&mvm->scan_timeout_dwork); 3032 3033 ieee80211_scan_completed(mvm->hw, &info); 3034 mvm->scan_uid_status[uid] = 0; 3035 } 3036 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3037 if (uid >= 0) { 3038 /* Sched scan will be restarted by mac80211 in 3039 * restart_hw, so do not report if FW is about to be 3040 * restarted. 3041 */ 3042 if (!mvm->fw_restart) 3043 ieee80211_sched_scan_stopped(mvm->hw); 3044 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3045 mvm->scan_uid_status[uid] = 0; 3046 } 3047 uid = iwl_mvm_scan_uid_by_status(mvm, 3048 IWL_MVM_SCAN_STOPPING_REGULAR); 3049 if (uid >= 0) 3050 mvm->scan_uid_status[uid] = 0; 3051 3052 uid = iwl_mvm_scan_uid_by_status(mvm, 3053 IWL_MVM_SCAN_STOPPING_SCHED); 3054 if (uid >= 0) 3055 mvm->scan_uid_status[uid] = 0; 3056 3057 /* We shouldn't have any UIDs still set. Loop over all the 3058 * UIDs to make sure there's nothing left there and warn if 3059 * any is found. 3060 */ 3061 for (i = 0; i < mvm->max_scans; i++) { 3062 if (WARN_ONCE(mvm->scan_uid_status[i], 3063 "UMAC scan UID %d status was not cleaned\n", 3064 i)) 3065 mvm->scan_uid_status[i] = 0; 3066 } 3067 } else { 3068 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3069 struct cfg80211_scan_info info = { 3070 .aborted = true, 3071 }; 3072 3073 cancel_delayed_work(&mvm->scan_timeout_dwork); 3074 ieee80211_scan_completed(mvm->hw, &info); 3075 } 3076 3077 /* Sched scan will be restarted by mac80211 in 3078 * restart_hw, so do not report if FW is about to be 3079 * restarted. 3080 */ 3081 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3082 !mvm->fw_restart) { 3083 ieee80211_sched_scan_stopped(mvm->hw); 3084 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3085 } 3086 } 3087 } 3088 3089 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3090 { 3091 int ret; 3092 3093 if (!(mvm->scan_status & type)) 3094 return 0; 3095 3096 if (iwl_mvm_is_radio_killed(mvm)) { 3097 ret = 0; 3098 goto out; 3099 } 3100 3101 ret = iwl_mvm_scan_stop_wait(mvm, type); 3102 if (!ret) 3103 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3104 out: 3105 /* Clear the scan status so the next scan requests will 3106 * succeed and mark the scan as stopping, so that the Rx 3107 * handler doesn't do anything, as the scan was stopped from 3108 * above. 3109 */ 3110 mvm->scan_status &= ~type; 3111 3112 if (type == IWL_MVM_SCAN_REGULAR) { 3113 cancel_delayed_work(&mvm->scan_timeout_dwork); 3114 if (notify) { 3115 struct cfg80211_scan_info info = { 3116 .aborted = true, 3117 }; 3118 3119 ieee80211_scan_completed(mvm->hw, &info); 3120 } 3121 } else if (notify) { 3122 ieee80211_sched_scan_stopped(mvm->hw); 3123 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3124 } 3125 3126 return ret; 3127 } 3128