1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2025 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 #include "iwl-utils.h" 15 16 #define IWL_DENSE_EBS_SCAN_RATIO 5 17 #define IWL_SPARSE_EBS_SCAN_RATIO 1 18 19 #define IWL_SCAN_DWELL_ACTIVE 10 20 #define IWL_SCAN_DWELL_PASSIVE 110 21 #define IWL_SCAN_DWELL_FRAGMENTED 44 22 #define IWL_SCAN_DWELL_EXTENDED 90 23 #define IWL_SCAN_NUM_OF_FRAGS 3 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 /* Number of iterations on the channel for mei filtered scan */ 50 #define IWL_MEI_SCAN_NUM_ITER 5U 51 52 #define WFA_TPC_IE_LEN 9 53 54 struct iwl_mvm_scan_timing_params { 55 u32 suspend_time; 56 u32 max_out_time; 57 }; 58 59 static struct iwl_mvm_scan_timing_params scan_timing[] = { 60 [IWL_SCAN_TYPE_UNASSOC] = { 61 .suspend_time = 0, 62 .max_out_time = 0, 63 }, 64 [IWL_SCAN_TYPE_WILD] = { 65 .suspend_time = 30, 66 .max_out_time = 120, 67 }, 68 [IWL_SCAN_TYPE_MILD] = { 69 .suspend_time = 120, 70 .max_out_time = 120, 71 }, 72 [IWL_SCAN_TYPE_FRAGMENTED] = { 73 .suspend_time = 95, 74 .max_out_time = 44, 75 }, 76 [IWL_SCAN_TYPE_FAST_BALANCE] = { 77 .suspend_time = 30, 78 .max_out_time = 37, 79 }, 80 }; 81 82 struct iwl_mvm_scan_params { 83 /* For CDB this is low band scan type, for non-CDB - type. */ 84 enum iwl_mvm_scan_type type; 85 enum iwl_mvm_scan_type hb_type; 86 u32 n_channels; 87 u16 delay; 88 int n_ssids; 89 struct cfg80211_ssid *ssids; 90 struct ieee80211_channel **channels; 91 u32 flags; 92 u8 *mac_addr; 93 u8 *mac_addr_mask; 94 bool no_cck; 95 bool pass_all; 96 int n_match_sets; 97 struct iwl_scan_probe_req preq; 98 struct cfg80211_match_set *match_sets; 99 int n_scan_plans; 100 struct cfg80211_sched_scan_plan *scan_plans; 101 bool iter_notif; 102 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 103 u32 n_6ghz_params; 104 bool scan_6ghz; 105 bool enable_6ghz_passive; 106 bool respect_p2p_go, respect_p2p_go_hb; 107 s8 tsf_report_link_id; 108 u8 bssid[ETH_ALEN] __aligned(2); 109 }; 110 111 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 112 { 113 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 114 115 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 116 return (void *)&cmd->v8.data; 117 118 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 119 return (void *)&cmd->v7.data; 120 121 if (iwl_mvm_cdb_scan_api(mvm)) 122 return (void *)&cmd->v6.data; 123 124 return (void *)&cmd->v1.data; 125 } 126 127 static inline struct iwl_scan_umac_chan_param * 128 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 129 { 130 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 131 132 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 133 return &cmd->v8.channel; 134 135 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 136 return &cmd->v7.channel; 137 138 if (iwl_mvm_cdb_scan_api(mvm)) 139 return &cmd->v6.channel; 140 141 return &cmd->v1.channel; 142 } 143 144 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 145 { 146 if (mvm->scan_rx_ant != ANT_NONE) 147 return mvm->scan_rx_ant; 148 return iwl_mvm_get_valid_rx_ant(mvm); 149 } 150 151 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 152 { 153 u16 rx_chain; 154 u8 rx_ant; 155 156 rx_ant = iwl_mvm_scan_rx_ant(mvm); 157 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 158 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 159 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 160 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 161 return cpu_to_le16(rx_chain); 162 } 163 164 static inline __le32 165 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 166 bool no_cck) 167 { 168 u32 tx_ant; 169 170 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 171 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 172 173 if (band == NL80211_BAND_2GHZ && !no_cck) 174 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 175 tx_ant); 176 else 177 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 178 } 179 180 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 181 { 182 return mvm->tcm.result.global_load; 183 } 184 185 static enum iwl_mvm_traffic_load 186 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 187 { 188 return mvm->tcm.result.band_load[band]; 189 } 190 191 struct iwl_mvm_scan_iter_data { 192 u32 global_cnt; 193 struct ieee80211_vif *current_vif; 194 bool is_dcm_with_p2p_go; 195 }; 196 197 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 198 struct ieee80211_vif *vif) 199 { 200 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 201 struct iwl_mvm_scan_iter_data *data = _data; 202 struct iwl_mvm_vif *curr_mvmvif; 203 204 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && 205 mvmvif->deflink.phy_ctxt && 206 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) 207 data->global_cnt += 1; 208 209 if (!data->current_vif || vif == data->current_vif) 210 return; 211 212 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 213 214 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO && 215 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && 216 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 217 data->is_dcm_with_p2p_go = true; 218 } 219 220 static enum 221 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 222 struct ieee80211_vif *vif, 223 enum iwl_mvm_traffic_load load, 224 bool low_latency) 225 { 226 struct iwl_mvm_scan_iter_data data = { 227 .current_vif = vif, 228 .is_dcm_with_p2p_go = false, 229 .global_cnt = 0, 230 }; 231 232 /* 233 * A scanning AP interface probably wants to generate a survey to do 234 * ACS (automatic channel selection). 235 * Force a non-fragmented scan in that case. 236 */ 237 if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP) 238 return IWL_SCAN_TYPE_WILD; 239 240 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 241 IEEE80211_IFACE_ITER_NORMAL, 242 iwl_mvm_scan_iterator, 243 &data); 244 245 if (!data.global_cnt) 246 return IWL_SCAN_TYPE_UNASSOC; 247 248 if (fw_has_api(&mvm->fw->ucode_capa, 249 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 250 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 251 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 252 return IWL_SCAN_TYPE_FRAGMENTED; 253 254 /* 255 * in case of DCM with P2P GO set all scan requests as 256 * fast-balance scan 257 */ 258 if (vif && vif->type == NL80211_IFTYPE_STATION && 259 data.is_dcm_with_p2p_go) 260 return IWL_SCAN_TYPE_FAST_BALANCE; 261 } 262 263 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 264 return IWL_SCAN_TYPE_MILD; 265 266 return IWL_SCAN_TYPE_WILD; 267 } 268 269 static enum 270 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 271 struct ieee80211_vif *vif) 272 { 273 enum iwl_mvm_traffic_load load; 274 bool low_latency; 275 276 load = iwl_mvm_get_traffic_load(mvm); 277 low_latency = iwl_mvm_low_latency(mvm); 278 279 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 280 } 281 282 static enum 283 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 284 struct ieee80211_vif *vif, 285 enum nl80211_band band) 286 { 287 enum iwl_mvm_traffic_load load; 288 bool low_latency; 289 290 load = iwl_mvm_get_traffic_load_band(mvm, band); 291 low_latency = iwl_mvm_low_latency_band(mvm, band); 292 293 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 294 } 295 296 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 297 { 298 /* require rrm scan whenever the fw supports it */ 299 return fw_has_capa(&mvm->fw->ucode_capa, 300 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 301 } 302 303 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 304 { 305 int max_probe_len; 306 307 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 308 309 /* we create the 802.11 header SSID element and WFA TPC element */ 310 max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN; 311 312 /* DS parameter set element is added on 2.4GHZ band if required */ 313 if (iwl_mvm_rrm_scan_needed(mvm)) 314 max_probe_len -= 3; 315 316 return max_probe_len; 317 } 318 319 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 320 { 321 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 322 323 /* TODO: [BUG] This function should return the maximum allowed size of 324 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 325 * in the same command. So the correct implementation of this function 326 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 327 * command has only 512 bytes and it would leave us with about 240 328 * bytes for scan IEs, which is clearly not enough. So meanwhile 329 * we will report an incorrect value. This may result in a failure to 330 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 331 * functions with -ENOBUFS, if a large enough probe will be provided. 332 */ 333 return max_ie_len; 334 } 335 336 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 337 struct iwl_rx_cmd_buffer *rxb) 338 { 339 struct iwl_rx_packet *pkt = rxb_addr(rxb); 340 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 341 342 IWL_DEBUG_SCAN(mvm, 343 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 344 notif->status, notif->scanned_channels); 345 346 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 347 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 348 ieee80211_sched_scan_results(mvm->hw); 349 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 350 } 351 } 352 353 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 354 struct iwl_rx_cmd_buffer *rxb) 355 { 356 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 357 ieee80211_sched_scan_results(mvm->hw); 358 } 359 360 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 361 { 362 switch (status) { 363 case IWL_SCAN_EBS_SUCCESS: 364 return "successful"; 365 case IWL_SCAN_EBS_INACTIVE: 366 return "inactive"; 367 case IWL_SCAN_EBS_FAILED: 368 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 369 default: 370 return "failed"; 371 } 372 } 373 374 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 375 struct iwl_rx_cmd_buffer *rxb) 376 { 377 struct iwl_rx_packet *pkt = rxb_addr(rxb); 378 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 379 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 380 381 /* If this happens, the firmware has mistakenly sent an LMAC 382 * notification during UMAC scans -- warn and ignore it. 383 */ 384 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 385 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 386 return; 387 388 /* scan status must be locked for proper checking */ 389 lockdep_assert_held(&mvm->mutex); 390 391 /* We first check if we were stopping a scan, in which case we 392 * just clear the stopping flag. Then we check if it was a 393 * firmware initiated stop, in which case we need to inform 394 * mac80211. 395 * Note that we can have a stopping and a running scan 396 * simultaneously, but we can't have two different types of 397 * scans stopping or running at the same time (since LMAC 398 * doesn't support it). 399 */ 400 401 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 402 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 403 404 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 405 aborted ? "aborted" : "completed", 406 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 407 IWL_DEBUG_SCAN(mvm, 408 "Last line %d, Last iteration %d, Time after last iteration %d\n", 409 scan_notif->last_schedule_line, 410 scan_notif->last_schedule_iteration, 411 __le32_to_cpu(scan_notif->time_after_last_iter)); 412 413 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 414 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 415 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 416 aborted ? "aborted" : "completed", 417 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 418 419 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 420 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 421 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 422 423 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 424 aborted ? "aborted" : "completed", 425 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 426 IWL_DEBUG_SCAN(mvm, 427 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 428 scan_notif->last_schedule_line, 429 scan_notif->last_schedule_iteration, 430 __le32_to_cpu(scan_notif->time_after_last_iter)); 431 432 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 433 ieee80211_sched_scan_stopped(mvm->hw); 434 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 435 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 436 struct cfg80211_scan_info info = { 437 .aborted = aborted, 438 }; 439 440 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 441 aborted ? "aborted" : "completed", 442 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 443 444 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 445 ieee80211_scan_completed(mvm->hw, &info); 446 cancel_delayed_work(&mvm->scan_timeout_dwork); 447 iwl_mvm_resume_tcm(mvm); 448 } else { 449 IWL_ERR(mvm, 450 "got scan complete notification but no scan is running\n"); 451 } 452 453 mvm->last_ebs_successful = 454 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 455 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 456 } 457 458 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 459 { 460 int i; 461 462 for (i = 0; i < PROBE_OPTION_MAX; i++) { 463 if (!ssid_list[i].len) 464 break; 465 if (ssid_list[i].len == ssid_len && 466 !memcmp(ssid_list[i].ssid, ssid, ssid_len)) 467 return i; 468 } 469 return -1; 470 } 471 472 /* We insert the SSIDs in an inverted order, because the FW will 473 * invert it back. 474 */ 475 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 476 struct iwl_ssid_ie *ssids, 477 u32 *ssid_bitmap) 478 { 479 int i, j; 480 int index; 481 u32 tmp_bitmap = 0; 482 483 /* 484 * copy SSIDs from match list. 485 * iwl_config_sched_scan_profiles() uses the order of these ssids to 486 * config match list. 487 */ 488 for (i = 0, j = params->n_match_sets - 1; 489 j >= 0 && i < PROBE_OPTION_MAX; 490 i++, j--) { 491 /* skip empty SSID matchsets */ 492 if (!params->match_sets[j].ssid.ssid_len) 493 continue; 494 ssids[i].id = WLAN_EID_SSID; 495 ssids[i].len = params->match_sets[j].ssid.ssid_len; 496 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 497 ssids[i].len); 498 } 499 500 /* add SSIDs from scan SSID list */ 501 for (j = params->n_ssids - 1; 502 j >= 0 && i < PROBE_OPTION_MAX; 503 i++, j--) { 504 index = iwl_ssid_exist(params->ssids[j].ssid, 505 params->ssids[j].ssid_len, 506 ssids); 507 if (index < 0) { 508 ssids[i].id = WLAN_EID_SSID; 509 ssids[i].len = params->ssids[j].ssid_len; 510 memcpy(ssids[i].ssid, params->ssids[j].ssid, 511 ssids[i].len); 512 tmp_bitmap |= BIT(i); 513 } else { 514 tmp_bitmap |= BIT(index); 515 } 516 } 517 if (ssid_bitmap) 518 *ssid_bitmap = tmp_bitmap; 519 } 520 521 static int 522 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 523 struct cfg80211_sched_scan_request *req) 524 { 525 struct iwl_scan_offload_profile *profile; 526 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 527 struct iwl_scan_offload_blocklist *blocklist; 528 struct iwl_scan_offload_profile_cfg_data *data; 529 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 530 int profile_cfg_size = sizeof(*data) + 531 sizeof(*profile) * max_profiles; 532 struct iwl_host_cmd cmd = { 533 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 534 .len[1] = profile_cfg_size, 535 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 536 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 537 }; 538 int blocklist_len; 539 int i; 540 int ret; 541 542 if (WARN_ON(req->n_match_sets > max_profiles)) 543 return -EIO; 544 545 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 546 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 547 else 548 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 549 550 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 551 if (!blocklist) 552 return -ENOMEM; 553 554 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 555 if (!profile_cfg_v1) { 556 ret = -ENOMEM; 557 goto free_blocklist; 558 } 559 560 cmd.data[0] = blocklist; 561 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 562 cmd.data[1] = profile_cfg_v1; 563 564 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 565 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 566 struct iwl_scan_offload_profile_cfg *profile_cfg = 567 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 568 569 data = &profile_cfg->data; 570 } else { 571 data = &profile_cfg_v1->data; 572 } 573 574 /* No blocklist configuration */ 575 data->num_profiles = req->n_match_sets; 576 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 577 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 578 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 579 580 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 581 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 582 583 for (i = 0; i < req->n_match_sets; i++) { 584 profile = &profile_cfg_v1->profiles[i]; 585 profile->ssid_index = i; 586 /* Support any cipher and auth algorithm */ 587 profile->unicast_cipher = 0xff; 588 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 589 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 590 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 591 profile->network_type = IWL_NETWORK_TYPE_ANY; 592 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 593 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 594 } 595 596 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 597 598 ret = iwl_mvm_send_cmd(mvm, &cmd); 599 kfree(profile_cfg_v1); 600 free_blocklist: 601 kfree(blocklist); 602 603 return ret; 604 } 605 606 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 607 struct cfg80211_sched_scan_request *req) 608 { 609 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 610 IWL_DEBUG_SCAN(mvm, 611 "Sending scheduled scan with filtering, n_match_sets %d\n", 612 req->n_match_sets); 613 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 614 return false; 615 } 616 617 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 618 619 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 620 return true; 621 } 622 623 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 624 { 625 int ret; 626 struct iwl_host_cmd cmd = { 627 .id = SCAN_OFFLOAD_ABORT_CMD, 628 }; 629 u32 status = CAN_ABORT_STATUS; 630 631 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 632 if (ret) 633 return ret; 634 635 if (status != CAN_ABORT_STATUS) { 636 /* 637 * The scan abort will return 1 for success or 638 * 2 for "failure". A failure condition can be 639 * due to simply not being in an active scan which 640 * can occur if we send the scan abort before the 641 * microcode has notified us that a scan is completed. 642 */ 643 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 644 ret = -ENOENT; 645 } 646 647 return ret; 648 } 649 650 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 651 struct iwl_scan_req_tx_cmd *tx_cmd, 652 bool no_cck) 653 { 654 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 655 TX_CMD_FLG_BT_DIS); 656 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 657 NL80211_BAND_2GHZ, 658 no_cck); 659 660 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 661 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 662 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 663 664 /* 665 * Fw doesn't use this sta anymore, pending deprecation via HOST API 666 * change 667 */ 668 } else { 669 tx_cmd[0].sta_id = 0xff; 670 tx_cmd[1].sta_id = 0xff; 671 } 672 673 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 674 TX_CMD_FLG_BT_DIS); 675 676 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 677 NL80211_BAND_5GHZ, 678 no_cck); 679 } 680 681 static void 682 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 683 struct ieee80211_channel **channels, 684 int n_channels, u32 ssid_bitmap, 685 struct iwl_scan_req_lmac *cmd) 686 { 687 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 688 int i; 689 690 for (i = 0; i < n_channels; i++) { 691 channel_cfg[i].channel_num = 692 cpu_to_le16(channels[i]->hw_value); 693 channel_cfg[i].iter_count = cpu_to_le16(1); 694 channel_cfg[i].iter_interval = 0; 695 channel_cfg[i].flags = 696 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 697 ssid_bitmap); 698 } 699 } 700 701 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 702 size_t len, u8 *const pos) 703 { 704 static const u8 before_ds_params[] = { 705 WLAN_EID_SSID, 706 WLAN_EID_SUPP_RATES, 707 WLAN_EID_REQUEST, 708 WLAN_EID_EXT_SUPP_RATES, 709 }; 710 size_t offs; 711 u8 *newpos = pos; 712 713 if (!iwl_mvm_rrm_scan_needed(mvm)) { 714 memcpy(newpos, ies, len); 715 return newpos + len; 716 } 717 718 offs = ieee80211_ie_split(ies, len, 719 before_ds_params, 720 ARRAY_SIZE(before_ds_params), 721 0); 722 723 memcpy(newpos, ies, offs); 724 newpos += offs; 725 726 /* Add a placeholder for DS Parameter Set element */ 727 *newpos++ = WLAN_EID_DS_PARAMS; 728 *newpos++ = 1; 729 *newpos++ = 0; 730 731 memcpy(newpos, ies + offs, len - offs); 732 newpos += len - offs; 733 734 return newpos; 735 } 736 737 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 738 { 739 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 740 pos[1] = WFA_TPC_IE_LEN - 2; 741 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 742 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 743 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 744 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 745 pos[6] = 0; 746 /* pos[7] - tx power will be inserted by the FW */ 747 pos[7] = 0; 748 pos[8] = 0; 749 } 750 751 static void 752 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 753 struct ieee80211_scan_ies *ies, 754 struct iwl_mvm_scan_params *params) 755 { 756 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 757 u8 *pos, *newpos; 758 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 759 params->mac_addr : NULL; 760 761 /* 762 * Unfortunately, right now the offload scan doesn't support randomising 763 * within the firmware, so until the firmware API is ready we implement 764 * it in the driver. This means that the scan iterations won't really be 765 * random, only when it's restarted, but at least that helps a bit. 766 */ 767 if (mac_addr) 768 get_random_mask_addr(frame->sa, mac_addr, 769 params->mac_addr_mask); 770 else 771 memcpy(frame->sa, vif->addr, ETH_ALEN); 772 773 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 774 eth_broadcast_addr(frame->da); 775 ether_addr_copy(frame->bssid, params->bssid); 776 frame->seq_ctrl = 0; 777 778 pos = frame->u.probe_req.variable; 779 *pos++ = WLAN_EID_SSID; 780 *pos++ = 0; 781 782 params->preq.mac_header.offset = 0; 783 params->preq.mac_header.len = cpu_to_le16(24 + 2); 784 785 /* Insert ds parameter set element on 2.4 GHz band */ 786 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 787 ies->ies[NL80211_BAND_2GHZ], 788 ies->len[NL80211_BAND_2GHZ], 789 pos); 790 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 791 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 792 pos = newpos; 793 794 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 795 ies->len[NL80211_BAND_5GHZ]); 796 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 797 params->preq.band_data[1].len = 798 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 799 pos += ies->len[NL80211_BAND_5GHZ]; 800 801 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 802 ies->len[NL80211_BAND_6GHZ]); 803 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 804 params->preq.band_data[2].len = 805 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 806 pos += ies->len[NL80211_BAND_6GHZ]; 807 memcpy(pos, ies->common_ies, ies->common_ie_len); 808 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 809 810 if (iwl_mvm_rrm_scan_needed(mvm) && 811 !fw_has_capa(&mvm->fw->ucode_capa, 812 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 813 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 814 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 815 WFA_TPC_IE_LEN); 816 } else { 817 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 818 } 819 } 820 821 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 822 struct iwl_scan_req_lmac *cmd, 823 struct iwl_mvm_scan_params *params) 824 { 825 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 826 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 827 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 828 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 829 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 830 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 831 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 832 } 833 834 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 835 struct ieee80211_scan_ies *ies, 836 int n_channels) 837 { 838 return ((n_ssids <= PROBE_OPTION_MAX) && 839 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) && 840 (ies->common_ie_len + 841 ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] + 842 ies->len[NL80211_BAND_6GHZ] <= 843 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 844 } 845 846 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 847 struct ieee80211_vif *vif) 848 { 849 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 850 bool low_latency; 851 852 if (iwl_mvm_is_cdb_supported(mvm)) 853 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 854 else 855 low_latency = iwl_mvm_low_latency(mvm); 856 857 /* We can only use EBS if: 858 * 1. the feature is supported; 859 * 2. the last EBS was successful; 860 * 3. if only single scan, the single scan EBS API is supported; 861 * 4. it's not a p2p find operation. 862 * 5. we are not in low latency mode, 863 * or if fragmented ebs is supported by the FW 864 * 6. the VIF is not an AP interface (scan wants survey results) 865 */ 866 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 867 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 868 vif->type != NL80211_IFTYPE_P2P_DEVICE && 869 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) && 870 ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP); 871 } 872 873 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 874 { 875 return params->n_scan_plans == 1 && 876 params->scan_plans[0].iterations == 1; 877 } 878 879 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 880 { 881 return (type == IWL_SCAN_TYPE_FRAGMENTED || 882 type == IWL_SCAN_TYPE_FAST_BALANCE); 883 } 884 885 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 886 struct iwl_mvm_scan_params *params, 887 struct ieee80211_vif *vif) 888 { 889 int flags = 0; 890 891 if (params->n_ssids == 0) 892 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 893 894 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 895 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 896 897 if (iwl_mvm_is_scan_fragmented(params->type)) 898 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 899 900 if (iwl_mvm_rrm_scan_needed(mvm) && 901 fw_has_capa(&mvm->fw->ucode_capa, 902 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 903 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 904 905 if (params->pass_all) 906 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 907 else 908 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 909 910 #ifdef CONFIG_IWLWIFI_DEBUGFS 911 if (mvm->scan_iter_notif_enabled) 912 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 913 #endif 914 915 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 916 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 917 918 if (iwl_mvm_is_regular_scan(params) && 919 vif->type != NL80211_IFTYPE_P2P_DEVICE && 920 !iwl_mvm_is_scan_fragmented(params->type)) 921 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 922 923 return flags; 924 } 925 926 static void 927 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 928 struct iwl_scan_probe_req *src_p_req) 929 { 930 int i; 931 932 p_req->mac_header = src_p_req->mac_header; 933 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 934 p_req->band_data[i] = src_p_req->band_data[i]; 935 p_req->common_data = src_p_req->common_data; 936 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 937 } 938 939 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 940 struct iwl_mvm_scan_params *params) 941 { 942 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 943 struct iwl_scan_probe_req_v1 *preq = 944 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 945 mvm->fw->ucode_capa.n_scan_channels); 946 u32 ssid_bitmap = 0; 947 int i; 948 u8 band; 949 950 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 951 return -EINVAL; 952 953 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 954 955 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 956 cmd->iter_num = cpu_to_le32(1); 957 cmd->n_channels = (u8)params->n_channels; 958 959 cmd->delay = cpu_to_le32(params->delay); 960 961 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 962 vif)); 963 964 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 965 cmd->flags = cpu_to_le32(band); 966 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 967 MAC_FILTER_IN_BEACON); 968 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 969 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 970 971 /* this API uses bits 1-20 instead of 0-19 */ 972 ssid_bitmap <<= 1; 973 974 for (i = 0; i < params->n_scan_plans; i++) { 975 struct cfg80211_sched_scan_plan *scan_plan = 976 ¶ms->scan_plans[i]; 977 978 cmd->schedule[i].delay = 979 cpu_to_le16(scan_plan->interval); 980 cmd->schedule[i].iterations = scan_plan->iterations; 981 cmd->schedule[i].full_scan_mul = 1; 982 } 983 984 /* 985 * If the number of iterations of the last scan plan is set to 986 * zero, it should run infinitely. However, this is not always the case. 987 * For example, when regular scan is requested the driver sets one scan 988 * plan with one iteration. 989 */ 990 if (!cmd->schedule[i - 1].iterations) 991 cmd->schedule[i - 1].iterations = 0xff; 992 993 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 994 cmd->channel_opt[0].flags = 995 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 996 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 997 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 998 cmd->channel_opt[0].non_ebs_ratio = 999 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 1000 cmd->channel_opt[1].flags = 1001 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1002 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1003 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1004 cmd->channel_opt[1].non_ebs_ratio = 1005 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1006 } 1007 1008 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1009 params->n_channels, ssid_bitmap, cmd); 1010 1011 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1012 1013 return 0; 1014 } 1015 1016 static int rate_to_scan_rate_flag(unsigned int rate) 1017 { 1018 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1019 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1020 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1021 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1022 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1023 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1024 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1025 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1026 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1027 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1028 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1029 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1030 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1031 }; 1032 1033 return rate_to_scan_rate[rate]; 1034 } 1035 1036 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1037 { 1038 struct ieee80211_supported_band *band; 1039 unsigned int rates = 0; 1040 int i; 1041 1042 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1043 for (i = 0; i < band->n_bitrates; i++) 1044 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1045 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1046 for (i = 0; i < band->n_bitrates; i++) 1047 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1048 1049 /* Set both basic rates and supported rates */ 1050 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1051 1052 return cpu_to_le32(rates); 1053 } 1054 1055 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1056 struct iwl_scan_dwell *dwell) 1057 { 1058 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1059 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1060 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1061 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1062 } 1063 1064 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1065 u32 max_channels) 1066 { 1067 struct ieee80211_supported_band *band; 1068 int i, j = 0; 1069 1070 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1071 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1072 channels[j] = band->channels[i].hw_value; 1073 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1074 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1075 channels[j] = band->channels[i].hw_value; 1076 } 1077 1078 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1079 u32 flags, u8 channel_flags, 1080 u32 max_channels) 1081 { 1082 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1083 struct iwl_scan_config_v1 *cfg = config; 1084 1085 cfg->flags = cpu_to_le32(flags); 1086 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1087 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1088 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1089 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1090 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1091 1092 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1093 1094 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1095 1096 /* This function should not be called when using ADD_STA ver >=12 */ 1097 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1098 1099 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1100 cfg->channel_flags = channel_flags; 1101 1102 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1103 } 1104 1105 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1106 u32 flags, u8 channel_flags, 1107 u32 max_channels) 1108 { 1109 struct iwl_scan_config_v2 *cfg = config; 1110 1111 cfg->flags = cpu_to_le32(flags); 1112 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1113 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1114 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1115 1116 if (iwl_mvm_is_cdb_supported(mvm)) { 1117 enum iwl_mvm_scan_type lb_type, hb_type; 1118 1119 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1120 NL80211_BAND_2GHZ); 1121 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1122 NL80211_BAND_5GHZ); 1123 1124 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1125 cpu_to_le32(scan_timing[lb_type].max_out_time); 1126 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1127 cpu_to_le32(scan_timing[lb_type].suspend_time); 1128 1129 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1130 cpu_to_le32(scan_timing[hb_type].max_out_time); 1131 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1132 cpu_to_le32(scan_timing[hb_type].suspend_time); 1133 } else { 1134 enum iwl_mvm_scan_type type = 1135 iwl_mvm_get_scan_type(mvm, NULL); 1136 1137 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1138 cpu_to_le32(scan_timing[type].max_out_time); 1139 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1140 cpu_to_le32(scan_timing[type].suspend_time); 1141 } 1142 1143 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1144 1145 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1146 1147 /* This function should not be called when using ADD_STA ver >=12 */ 1148 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1149 1150 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1151 cfg->channel_flags = channel_flags; 1152 1153 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1154 } 1155 1156 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1157 { 1158 void *cfg; 1159 int ret, cmd_size; 1160 struct iwl_host_cmd cmd = { 1161 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1162 }; 1163 enum iwl_mvm_scan_type type; 1164 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1165 int num_channels = 1166 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1167 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1168 u32 flags; 1169 u8 channel_flags; 1170 1171 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1172 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1173 1174 if (iwl_mvm_is_cdb_supported(mvm)) { 1175 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1176 NL80211_BAND_2GHZ); 1177 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1178 NL80211_BAND_5GHZ); 1179 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1180 return 0; 1181 } else { 1182 type = iwl_mvm_get_scan_type(mvm, NULL); 1183 if (type == mvm->scan_type) 1184 return 0; 1185 } 1186 1187 if (iwl_mvm_cdb_scan_api(mvm)) 1188 cmd_size = sizeof(struct iwl_scan_config_v2); 1189 else 1190 cmd_size = sizeof(struct iwl_scan_config_v1); 1191 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1192 1193 cfg = kzalloc(cmd_size, GFP_KERNEL); 1194 if (!cfg) 1195 return -ENOMEM; 1196 1197 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1198 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1199 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1200 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1201 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1202 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1203 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1204 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1205 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1206 SCAN_CONFIG_N_CHANNELS(num_channels) | 1207 (iwl_mvm_is_scan_fragmented(type) ? 1208 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1209 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1210 1211 channel_flags = IWL_CHANNEL_FLAG_EBS | 1212 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1213 IWL_CHANNEL_FLAG_EBS_ADD | 1214 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1215 1216 /* 1217 * Check for fragmented scan on LMAC2 - high band. 1218 * LMAC1 - low band is checked above. 1219 */ 1220 if (iwl_mvm_cdb_scan_api(mvm)) { 1221 if (iwl_mvm_is_cdb_supported(mvm)) 1222 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1223 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1224 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1225 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1226 num_channels); 1227 } else { 1228 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1229 num_channels); 1230 } 1231 1232 cmd.data[0] = cfg; 1233 cmd.len[0] = cmd_size; 1234 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1235 1236 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1237 1238 ret = iwl_mvm_send_cmd(mvm, &cmd); 1239 if (!ret) { 1240 mvm->scan_type = type; 1241 mvm->hb_scan_type = hb_type; 1242 } 1243 1244 kfree(cfg); 1245 return ret; 1246 } 1247 1248 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1249 { 1250 struct iwl_scan_config cfg; 1251 struct iwl_host_cmd cmd = { 1252 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1253 .len[0] = sizeof(cfg), 1254 .data[0] = &cfg, 1255 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1256 }; 1257 1258 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1259 return iwl_mvm_legacy_config_scan(mvm); 1260 1261 memset(&cfg, 0, sizeof(cfg)); 1262 1263 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 1264 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1265 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, 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->n_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(int type) 1392 { 1393 if (type == IWL_MVM_SCAN_REGULAR) 1394 return IWL_SCAN_PRIORITY_EXT_6; 1395 if (type == IWL_MVM_SCAN_INT_MLO) 1396 return IWL_SCAN_PRIORITY_EXT_4; 1397 1398 return IWL_SCAN_PRIORITY_EXT_2; 1399 } 1400 1401 static void 1402 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1403 struct iwl_scan_general_params_v11 *general_params, 1404 struct iwl_mvm_scan_params *params) 1405 { 1406 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1407 u8 active_dwell, passive_dwell; 1408 1409 timing = &scan_timing[params->type]; 1410 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1411 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1412 1413 general_params->adwell_default_social_chn = 1414 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1415 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1416 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1417 1418 /* if custom max budget was configured with debugfs */ 1419 if (IWL_MVM_ADWELL_MAX_BUDGET) 1420 general_params->adwell_max_budget = 1421 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1422 else if (params->n_ssids && params->ssids[0].ssid_len) 1423 general_params->adwell_max_budget = 1424 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1425 else 1426 general_params->adwell_max_budget = 1427 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1428 1429 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1430 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1431 cpu_to_le32(timing->max_out_time); 1432 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1433 cpu_to_le32(timing->suspend_time); 1434 1435 hb_timing = &scan_timing[params->hb_type]; 1436 1437 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1438 cpu_to_le32(hb_timing->max_out_time); 1439 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1440 cpu_to_le32(hb_timing->suspend_time); 1441 1442 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1443 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1444 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1445 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1446 } 1447 1448 struct iwl_mvm_scan_channel_segment { 1449 u8 start_idx; 1450 u8 end_idx; 1451 u8 first_channel_id; 1452 u8 last_channel_id; 1453 u8 channel_spacing_shift; 1454 u8 band; 1455 }; 1456 1457 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1458 { 1459 .start_idx = 0, 1460 .end_idx = 13, 1461 .first_channel_id = 1, 1462 .last_channel_id = 14, 1463 .channel_spacing_shift = 0, 1464 .band = PHY_BAND_24 1465 }, 1466 { 1467 .start_idx = 14, 1468 .end_idx = 41, 1469 .first_channel_id = 36, 1470 .last_channel_id = 144, 1471 .channel_spacing_shift = 2, 1472 .band = PHY_BAND_5 1473 }, 1474 { 1475 .start_idx = 42, 1476 .end_idx = 50, 1477 .first_channel_id = 149, 1478 .last_channel_id = 181, 1479 .channel_spacing_shift = 2, 1480 .band = PHY_BAND_5 1481 }, 1482 { 1483 .start_idx = 51, 1484 .end_idx = 111, 1485 .first_channel_id = 1, 1486 .last_channel_id = 241, 1487 .channel_spacing_shift = 2, 1488 .band = PHY_BAND_6 1489 }, 1490 }; 1491 1492 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1493 { 1494 int i, index; 1495 1496 if (!channel_id) 1497 return -EINVAL; 1498 1499 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1500 const struct iwl_mvm_scan_channel_segment *ch_segment = 1501 &scan_channel_segments[i]; 1502 u32 ch_offset; 1503 1504 if (ch_segment->band != band || 1505 ch_segment->first_channel_id > channel_id || 1506 ch_segment->last_channel_id < channel_id) 1507 continue; 1508 1509 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1510 ch_segment->channel_spacing_shift; 1511 1512 index = scan_channel_segments[i].start_idx + ch_offset; 1513 if (index < IWL_SCAN_NUM_CHANNELS) 1514 return index; 1515 1516 break; 1517 } 1518 1519 return -EINVAL; 1520 } 1521 1522 static const u8 p2p_go_friendly_chs[] = { 1523 36, 40, 44, 48, 149, 153, 157, 161, 165, 1524 }; 1525 1526 static const u8 social_chs[] = { 1527 1, 6, 11 1528 }; 1529 1530 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1531 u8 ch_id, u8 band, u8 *ch_bitmap, 1532 size_t bitmap_n_entries) 1533 { 1534 int i; 1535 1536 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1537 return; 1538 1539 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1540 if (p2p_go_friendly_chs[i] == ch_id) { 1541 int ch_idx, bitmap_idx; 1542 1543 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1544 if (ch_idx < 0) 1545 return; 1546 1547 bitmap_idx = ch_idx / 8; 1548 if (bitmap_idx >= bitmap_n_entries) 1549 return; 1550 1551 ch_idx = ch_idx % 8; 1552 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1553 1554 return; 1555 } 1556 } 1557 } 1558 1559 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1560 { 1561 int i; 1562 u32 flags = 0; 1563 1564 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1565 goto out; 1566 1567 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1568 if (p2p_go_friendly_chs[i] == ch_id) { 1569 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1570 break; 1571 } 1572 } 1573 1574 if (flags) 1575 goto out; 1576 1577 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1578 if (social_chs[i] == ch_id) { 1579 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1580 break; 1581 } 1582 } 1583 1584 out: 1585 return flags; 1586 } 1587 1588 static void 1589 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1590 struct ieee80211_channel **channels, 1591 int n_channels, u32 flags, 1592 struct iwl_scan_channel_cfg_umac *channel_cfg) 1593 { 1594 int i; 1595 1596 for (i = 0; i < n_channels; i++) { 1597 channel_cfg[i].flags = cpu_to_le32(flags); 1598 channel_cfg[i].channel_num = channels[i]->hw_value; 1599 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1600 enum nl80211_band band = channels[i]->band; 1601 1602 channel_cfg[i].v2.band = 1603 iwl_mvm_phy_band_from_nl80211(band); 1604 channel_cfg[i].v2.iter_count = 1; 1605 channel_cfg[i].v2.iter_interval = 0; 1606 } else { 1607 channel_cfg[i].v1.iter_count = 1; 1608 channel_cfg[i].v1.iter_interval = 0; 1609 } 1610 } 1611 } 1612 1613 static void 1614 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1615 struct ieee80211_channel **channels, 1616 struct iwl_scan_channel_params_v4 *cp, 1617 int n_channels, u32 flags, 1618 enum nl80211_iftype vif_type) 1619 { 1620 u8 *bitmap = cp->adwell_ch_override_bitmap; 1621 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1622 int i; 1623 1624 for (i = 0; i < n_channels; i++) { 1625 enum nl80211_band band = channels[i]->band; 1626 struct iwl_scan_channel_cfg_umac *cfg = 1627 &cp->channel_config[i]; 1628 1629 cfg->flags = cpu_to_le32(flags); 1630 cfg->channel_num = channels[i]->hw_value; 1631 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1632 cfg->v2.iter_count = 1; 1633 cfg->v2.iter_interval = 0; 1634 1635 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1636 cfg->channel_num, 1637 cfg->v2.band, bitmap, 1638 bitmap_n_entries); 1639 } 1640 } 1641 1642 static void 1643 iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm, 1644 struct ieee80211_channel **channels, 1645 struct iwl_scan_channel_params_v7 *cp, 1646 int n_channels, u32 flags, 1647 enum nl80211_iftype vif_type, u32 version) 1648 { 1649 int i; 1650 1651 for (i = 0; i < n_channels; i++) { 1652 enum nl80211_band band = channels[i]->band; 1653 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1654 u32 n_aps_flag = 1655 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1656 channels[i]->hw_value); 1657 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band); 1658 1659 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1660 cfg->channel_num = channels[i]->hw_value; 1661 if (cfg80211_channel_is_psc(channels[i])) 1662 cfg->flags = 0; 1663 1664 if (band == NL80211_BAND_6GHZ) { 1665 /* 6 GHz channels should only appear in a scan request 1666 * that has scan_6ghz set. The only exception is MLO 1667 * scan, which has to be passive. 1668 */ 1669 WARN_ON_ONCE(cfg->flags != 0); 1670 cfg->flags = 1671 cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE); 1672 } 1673 1674 cfg->v2.iter_count = 1; 1675 cfg->v2.iter_interval = 0; 1676 if (version < 17) 1677 cfg->v2.band = iwl_band; 1678 else 1679 cfg->flags |= cpu_to_le32((iwl_band << 1680 IWL_CHAN_CFG_FLAGS_BAND_POS)); 1681 } 1682 } 1683 1684 static void 1685 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1686 struct iwl_mvm_scan_params *params, 1687 struct iwl_scan_probe_params_v4 *pp) 1688 { 1689 int j, idex_s = 0, idex_b = 0; 1690 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1691 params->scan_6ghz_params; 1692 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1693 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1694 1695 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1696 j++) { 1697 if (!params->ssids[j].ssid_len) 1698 continue; 1699 1700 pp->short_ssid[idex_s] = 1701 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1702 params->ssids[j].ssid_len)); 1703 1704 if (hidden_supported) { 1705 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1706 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1707 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1708 params->ssids[j].ssid_len); 1709 } 1710 idex_s++; 1711 } 1712 1713 /* 1714 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1715 * collocated parameters. This might not be optimal, as this processing 1716 * does not (yet) correspond to the actual channels, so it is possible 1717 * that some entries would be left out. 1718 * 1719 * TODO: improve this logic. 1720 */ 1721 for (j = 0; j < params->n_6ghz_params; j++) { 1722 int k; 1723 1724 /* First, try to place the short SSID */ 1725 if (scan_6ghz_params[j].short_ssid_valid) { 1726 for (k = 0; k < idex_s; k++) { 1727 if (pp->short_ssid[k] == 1728 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1729 break; 1730 } 1731 1732 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1733 pp->short_ssid[idex_s++] = 1734 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1735 } 1736 } 1737 1738 /* try to place BSSID for the same entry */ 1739 for (k = 0; k < idex_b; k++) { 1740 if (!memcmp(&pp->bssid_array[k], 1741 scan_6ghz_params[j].bssid, ETH_ALEN)) 1742 break; 1743 } 1744 1745 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE && 1746 !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid), 1747 "scan: invalid BSSID at index %u, index_b=%u\n", 1748 j, idex_b)) { 1749 memcpy(&pp->bssid_array[idex_b++], 1750 scan_6ghz_params[j].bssid, ETH_ALEN); 1751 } 1752 } 1753 1754 pp->short_ssid_num = idex_s; 1755 pp->bssid_num = idex_b; 1756 } 1757 1758 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */ 1759 static u32 1760 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm, 1761 struct iwl_mvm_scan_params *params, 1762 u32 n_channels, 1763 struct iwl_scan_probe_params_v4 *pp, 1764 struct iwl_scan_channel_params_v7 *cp, 1765 enum nl80211_iftype vif_type, 1766 u32 version) 1767 { 1768 int i; 1769 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1770 params->scan_6ghz_params; 1771 u32 ch_cnt; 1772 1773 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1774 struct iwl_scan_channel_cfg_umac *cfg = 1775 &cp->channel_config[ch_cnt]; 1776 1777 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1778 u8 k, n_s_ssids = 0, n_bssids = 0; 1779 u8 max_s_ssids, max_bssids; 1780 bool force_passive = false, found = false, allow_passive = true, 1781 unsolicited_probe_on_chan = false, psc_no_listen = false; 1782 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 1783 1784 /* 1785 * Avoid performing passive scan on non PSC channels unless the 1786 * scan is specifically a passive scan, i.e., no SSIDs 1787 * configured in the scan command. 1788 */ 1789 if (!cfg80211_channel_is_psc(params->channels[i]) && 1790 !params->n_6ghz_params && params->n_ssids) 1791 continue; 1792 1793 cfg->channel_num = params->channels[i]->hw_value; 1794 if (version < 17) 1795 cfg->v2.band = PHY_BAND_6; 1796 else 1797 cfg->flags |= cpu_to_le32(PHY_BAND_6 << 1798 IWL_CHAN_CFG_FLAGS_BAND_POS); 1799 1800 cfg->v5.iter_count = 1; 1801 cfg->v5.iter_interval = 0; 1802 1803 for (u32 j = 0; j < params->n_6ghz_params; j++) { 1804 s8 tmp_psd_20; 1805 1806 if (!(scan_6ghz_params[j].channel_idx == i)) 1807 continue; 1808 1809 unsolicited_probe_on_chan |= 1810 scan_6ghz_params[j].unsolicited_probe; 1811 1812 /* Use the highest PSD value allowed as advertised by 1813 * APs for this channel 1814 */ 1815 tmp_psd_20 = scan_6ghz_params[j].psd_20; 1816 if (tmp_psd_20 != 1817 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED && 1818 (psd_20 == 1819 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED || 1820 psd_20 < tmp_psd_20)) 1821 psd_20 = tmp_psd_20; 1822 1823 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1824 } 1825 1826 /* 1827 * In the following cases apply passive scan: 1828 * 1. Non fragmented scan: 1829 * - PSC channel with NO_LISTEN_FLAG on should be treated 1830 * like non PSC channel 1831 * - Non PSC channel with more than 3 short SSIDs or more 1832 * than 9 BSSIDs. 1833 * - Non PSC Channel with unsolicited probe response and 1834 * more than 2 short SSIDs or more than 6 BSSIDs. 1835 * - PSC channel with more than 2 short SSIDs or more than 1836 * 6 BSSIDs. 1837 * 3. Fragmented scan: 1838 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1839 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1840 * - Non PSC channel with unsolicited probe response and 1841 * more than 1 SSID or more than 3 BSSIDs. 1842 */ 1843 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1844 if (!cfg80211_channel_is_psc(params->channels[i]) || 1845 psc_no_listen) { 1846 if (unsolicited_probe_on_chan) { 1847 max_s_ssids = 2; 1848 max_bssids = 6; 1849 } else { 1850 max_s_ssids = 3; 1851 max_bssids = 9; 1852 } 1853 } else { 1854 max_s_ssids = 2; 1855 max_bssids = 6; 1856 } 1857 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1858 max_s_ssids = 1; 1859 max_bssids = 3; 1860 } else { 1861 if (unsolicited_probe_on_chan) { 1862 max_s_ssids = 1; 1863 max_bssids = 3; 1864 } else { 1865 max_s_ssids = 2; 1866 max_bssids = 6; 1867 } 1868 } 1869 1870 /* 1871 * The optimize the scan time, i.e., reduce the scan dwell time 1872 * on each channel, the below logic tries to set 3 direct BSSID 1873 * probe requests for each broadcast probe request with a short 1874 * SSID. 1875 * TODO: improve this logic 1876 */ 1877 for (u32 j = 0; j < params->n_6ghz_params; j++) { 1878 if (!(scan_6ghz_params[j].channel_idx == i)) 1879 continue; 1880 1881 found = false; 1882 1883 for (k = 0; 1884 k < pp->short_ssid_num && n_s_ssids < max_s_ssids; 1885 k++) { 1886 if (!scan_6ghz_params[j].unsolicited_probe && 1887 le32_to_cpu(pp->short_ssid[k]) == 1888 scan_6ghz_params[j].short_ssid) { 1889 /* Relevant short SSID bit set */ 1890 if (s_ssid_bitmap & BIT(k)) { 1891 found = true; 1892 break; 1893 } 1894 1895 /* 1896 * Prefer creating BSSID entries unless 1897 * the short SSID probe can be done in 1898 * the same channel dwell iteration. 1899 * 1900 * We also need to create a short SSID 1901 * entry for any hidden AP. 1902 */ 1903 if (3 * n_s_ssids > n_bssids && 1904 !pp->direct_scan[k].len) 1905 break; 1906 1907 /* Hidden AP, cannot do passive scan */ 1908 if (pp->direct_scan[k].len) 1909 allow_passive = false; 1910 1911 s_ssid_bitmap |= BIT(k); 1912 n_s_ssids++; 1913 found = true; 1914 break; 1915 } 1916 } 1917 1918 if (found) 1919 continue; 1920 1921 for (k = 0; k < pp->bssid_num; k++) { 1922 if (!memcmp(&pp->bssid_array[k], 1923 scan_6ghz_params[j].bssid, 1924 ETH_ALEN)) { 1925 if (!(bssid_bitmap & BIT(k))) { 1926 if (n_bssids < max_bssids) { 1927 bssid_bitmap |= BIT(k); 1928 n_bssids++; 1929 } else { 1930 force_passive = TRUE; 1931 } 1932 } 1933 break; 1934 } 1935 } 1936 } 1937 1938 if (cfg80211_channel_is_psc(params->channels[i]) && 1939 psc_no_listen) 1940 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1941 1942 if (unsolicited_probe_on_chan) 1943 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1944 1945 if ((allow_passive && force_passive) || 1946 (!(bssid_bitmap | s_ssid_bitmap) && 1947 !cfg80211_channel_is_psc(params->channels[i]))) 1948 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1949 else 1950 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1951 1952 cfg->flags |= cpu_to_le32(flags); 1953 if (version >= 17) 1954 cfg->v5.psd_20 = psd_20; 1955 1956 ch_cnt++; 1957 } 1958 1959 if (params->n_channels > ch_cnt) 1960 IWL_DEBUG_SCAN(mvm, 1961 "6GHz: reducing number channels: (%u->%u)\n", 1962 params->n_channels, ch_cnt); 1963 1964 return ch_cnt; 1965 } 1966 1967 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1968 struct iwl_mvm_scan_params *params, 1969 struct ieee80211_vif *vif) 1970 { 1971 u8 flags = 0; 1972 1973 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1974 1975 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1976 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1977 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1978 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1979 1980 /* set fragmented ebs for fragmented scan on HB channels */ 1981 if ((!iwl_mvm_is_cdb_supported(mvm) && 1982 iwl_mvm_is_scan_fragmented(params->type)) || 1983 (iwl_mvm_is_cdb_supported(mvm) && 1984 iwl_mvm_is_scan_fragmented(params->hb_type))) 1985 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1986 1987 /* 1988 * force EBS in case the scan is a fragmented and there is a need to take P2P 1989 * GO operation into consideration during scan operation. 1990 */ 1991 if ((!iwl_mvm_is_cdb_supported(mvm) && 1992 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1993 (iwl_mvm_is_cdb_supported(mvm) && 1994 iwl_mvm_is_scan_fragmented(params->hb_type) && 1995 params->respect_p2p_go_hb)) { 1996 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1997 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1998 } 1999 2000 return flags; 2001 } 2002 2003 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 2004 struct iwl_mvm_scan_params *params, 2005 struct ieee80211_vif *vif) 2006 { 2007 struct ieee80211_supported_band *sband = 2008 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2009 u32 n_disabled, i; 2010 2011 params->enable_6ghz_passive = false; 2012 2013 if (params->scan_6ghz) 2014 return; 2015 2016 if (!fw_has_capa(&mvm->fw->ucode_capa, 2017 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 2018 IWL_DEBUG_SCAN(mvm, 2019 "6GHz passive scan: Not supported by FW\n"); 2020 return; 2021 } 2022 2023 /* 6GHz passive scan allowed only on station interface */ 2024 if (vif->type != NL80211_IFTYPE_STATION) { 2025 IWL_DEBUG_SCAN(mvm, 2026 "6GHz passive scan: not station interface\n"); 2027 return; 2028 } 2029 2030 /* 2031 * 6GHz passive scan is allowed in a defined time interval following HW 2032 * reset or resume flow, or while not associated and a large interval 2033 * has passed since the last 6GHz passive scan. 2034 */ 2035 if ((vif->cfg.assoc || 2036 time_after(mvm->last_6ghz_passive_scan_jiffies + 2037 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 2038 (time_before(mvm->last_reset_or_resume_time_jiffies + 2039 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 2040 jiffies))) { 2041 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 2042 vif->cfg.assoc ? "associated" : 2043 "timeout did not expire"); 2044 return; 2045 } 2046 2047 /* not enough channels in the regular scan request */ 2048 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 2049 IWL_DEBUG_SCAN(mvm, 2050 "6GHz passive scan: not enough channels\n"); 2051 return; 2052 } 2053 2054 for (i = 0; i < params->n_ssids; i++) { 2055 if (!params->ssids[i].ssid_len) 2056 break; 2057 } 2058 2059 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 2060 if (i == params->n_ssids) { 2061 IWL_DEBUG_SCAN(mvm, 2062 "6GHz passive scan: no wildcard SSID\n"); 2063 return; 2064 } 2065 2066 if (!sband || !sband->n_channels) { 2067 IWL_DEBUG_SCAN(mvm, 2068 "6GHz passive scan: no 6GHz channels\n"); 2069 return; 2070 } 2071 2072 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 2073 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 2074 n_disabled++; 2075 } 2076 2077 /* 2078 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 2079 * scan 2080 */ 2081 if (n_disabled != sband->n_channels) { 2082 IWL_DEBUG_SCAN(mvm, 2083 "6GHz passive scan: 6GHz channels enabled\n"); 2084 return; 2085 } 2086 2087 /* all conditions to enable 6ghz passive scan are satisfied */ 2088 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2089 params->enable_6ghz_passive = true; 2090 } 2091 2092 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2093 struct iwl_mvm_scan_params *params, 2094 struct ieee80211_vif *vif, 2095 int type) 2096 { 2097 u16 flags = 0; 2098 2099 /* 2100 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2101 * if there is a single SSID which is not the broadcast SSID, assume 2102 * that the scan is intended for roaming purposes and thus enable Rx on 2103 * all chains to improve chances of hearing the beacons/probe responses. 2104 */ 2105 if (params->n_ssids == 0) 2106 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2107 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2108 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2109 2110 if (iwl_mvm_is_scan_fragmented(params->type)) 2111 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2112 2113 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2114 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2115 2116 if (params->pass_all) 2117 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2118 else 2119 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2120 2121 if (!iwl_mvm_is_regular_scan(params)) 2122 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2123 2124 if (params->iter_notif || 2125 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2126 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2127 2128 if (IWL_MVM_ADWELL_ENABLE) 2129 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2130 2131 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2132 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2133 2134 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2135 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2136 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2137 2138 if (params->enable_6ghz_passive) 2139 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2140 2141 if (iwl_mvm_is_oce_supported(mvm) && 2142 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2143 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2144 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2145 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2146 2147 return flags; 2148 } 2149 2150 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2151 struct iwl_mvm_scan_params *params, 2152 struct ieee80211_vif *vif, int type, 2153 u16 gen_flags) 2154 { 2155 u8 flags = 0; 2156 2157 if (iwl_mvm_is_cdb_supported(mvm)) { 2158 if (params->respect_p2p_go) 2159 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2160 if (params->respect_p2p_go_hb) 2161 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2162 } else { 2163 if (params->respect_p2p_go) 2164 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2165 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2166 } 2167 2168 if (params->scan_6ghz && 2169 fw_has_capa(&mvm->fw->ucode_capa, 2170 IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT)) 2171 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT; 2172 2173 /* Passive and AP interface -> ACS (automatic channel selection) */ 2174 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE && 2175 ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP && 2176 iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 2177 0) >= 1) 2178 flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS; 2179 2180 return flags; 2181 } 2182 2183 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2184 struct iwl_mvm_scan_params *params, 2185 struct ieee80211_vif *vif) 2186 { 2187 u16 flags = 0; 2188 2189 if (params->n_ssids == 0) 2190 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2191 2192 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2193 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2194 2195 if (iwl_mvm_is_scan_fragmented(params->type)) 2196 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2197 2198 if (iwl_mvm_is_cdb_supported(mvm) && 2199 iwl_mvm_is_scan_fragmented(params->hb_type)) 2200 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2201 2202 if (iwl_mvm_rrm_scan_needed(mvm) && 2203 fw_has_capa(&mvm->fw->ucode_capa, 2204 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2205 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2206 2207 if (params->pass_all) 2208 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2209 else 2210 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2211 2212 if (!iwl_mvm_is_regular_scan(params)) 2213 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2214 2215 if (params->iter_notif) 2216 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2217 2218 #ifdef CONFIG_IWLWIFI_DEBUGFS 2219 if (mvm->scan_iter_notif_enabled) 2220 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2221 #endif 2222 2223 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2224 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2225 2226 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2227 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2228 2229 /* 2230 * Extended dwell is relevant only for low band to start with, as it is 2231 * being used for social channles only (1, 6, 11), so we can check 2232 * only scan type on low band also for CDB. 2233 */ 2234 if (iwl_mvm_is_regular_scan(params) && 2235 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2236 !iwl_mvm_is_scan_fragmented(params->type) && 2237 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2238 !iwl_mvm_is_oce_supported(mvm)) 2239 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2240 2241 if (iwl_mvm_is_oce_supported(mvm)) { 2242 if ((params->flags & 2243 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2244 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2245 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2246 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2247 * the same bit, we need to make sure that we use this bit here 2248 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2249 * used. */ 2250 if ((params->flags & 2251 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2252 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2253 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2254 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2255 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2256 } 2257 2258 return flags; 2259 } 2260 2261 static int 2262 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2263 struct iwl_scan_umac_schedule *schedule, 2264 __le16 *delay) 2265 { 2266 int i; 2267 if (WARN_ON(!params->n_scan_plans || 2268 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2269 return -EINVAL; 2270 2271 for (i = 0; i < params->n_scan_plans; i++) { 2272 struct cfg80211_sched_scan_plan *scan_plan = 2273 ¶ms->scan_plans[i]; 2274 2275 schedule[i].iter_count = scan_plan->iterations; 2276 schedule[i].interval = 2277 cpu_to_le16(scan_plan->interval); 2278 } 2279 2280 /* 2281 * If the number of iterations of the last scan plan is set to 2282 * zero, it should run infinitely. However, this is not always the case. 2283 * For example, when regular scan is requested the driver sets one scan 2284 * plan with one iteration. 2285 */ 2286 if (!schedule[params->n_scan_plans - 1].iter_count) 2287 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2288 2289 *delay = cpu_to_le16(params->delay); 2290 2291 return 0; 2292 } 2293 2294 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2295 struct iwl_mvm_scan_params *params, 2296 int type, int uid) 2297 { 2298 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2299 struct iwl_scan_umac_chan_param *chan_param; 2300 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2301 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2302 mvm->fw->ucode_capa.n_scan_channels; 2303 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2304 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2305 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2306 struct iwl_ssid_ie *direct_scan; 2307 int ret = 0; 2308 u32 ssid_bitmap = 0; 2309 u8 channel_flags = 0; 2310 u16 gen_flags; 2311 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2312 2313 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2314 2315 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2316 2317 cmd->uid = cpu_to_le32(uid); 2318 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2319 cmd->general_flags = cpu_to_le16(gen_flags); 2320 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2321 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2322 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2323 IWL_SCAN_NUM_OF_FRAGS; 2324 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2325 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2326 IWL_SCAN_NUM_OF_FRAGS; 2327 2328 cmd->v8.general_flags2 = 2329 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2330 } 2331 2332 cmd->scan_start_mac_id = scan_vif->id; 2333 2334 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2335 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2336 2337 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2338 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2339 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2340 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2341 2342 /* set fragmented ebs for fragmented scan on HB channels */ 2343 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2344 if (gen_flags & 2345 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2346 (!iwl_mvm_is_cdb_supported(mvm) && 2347 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2348 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2349 } 2350 } 2351 2352 chan_param->flags = channel_flags; 2353 chan_param->count = params->n_channels; 2354 2355 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2356 &tail_v2->delay); 2357 if (ret) 2358 return ret; 2359 2360 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2361 tail_v2->preq = params->preq; 2362 direct_scan = tail_v2->direct_scan; 2363 } else { 2364 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2365 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2366 ¶ms->preq); 2367 direct_scan = tail_v1->direct_scan; 2368 } 2369 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2370 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2371 params->n_channels, ssid_bitmap, 2372 cmd_data); 2373 return 0; 2374 } 2375 2376 static void 2377 iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm, 2378 struct iwl_mvm_scan_params *params, 2379 struct ieee80211_vif *vif, 2380 struct iwl_scan_general_params_v11 *gp, 2381 u16 gen_flags, u8 gen_flags2, 2382 u32 version) 2383 { 2384 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2385 2386 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2387 2388 IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n", 2389 gen_flags, gen_flags2); 2390 2391 gp->flags = cpu_to_le16(gen_flags); 2392 gp->flags2 = gen_flags2; 2393 2394 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2395 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2396 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2397 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2398 2399 mvm->scan_link_id = 0; 2400 2401 if (version < 16) { 2402 gp->scan_start_mac_or_link_id = scan_vif->id; 2403 } else { 2404 struct iwl_mvm_vif_link_info *link_info = 2405 scan_vif->link[params->tsf_report_link_id]; 2406 2407 mvm->scan_link_id = params->tsf_report_link_id; 2408 if (!WARN_ON(!link_info)) 2409 gp->scan_start_mac_or_link_id = link_info->fw_link_id; 2410 } 2411 } 2412 2413 static void 2414 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2415 struct iwl_scan_probe_params_v3 *pp) 2416 { 2417 pp->preq = params->preq; 2418 pp->ssid_num = params->n_ssids; 2419 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2420 } 2421 2422 static void 2423 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2424 struct iwl_scan_probe_params_v4 *pp, 2425 u32 *bitmap_ssid) 2426 { 2427 pp->preq = params->preq; 2428 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2429 } 2430 2431 static void 2432 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2433 struct iwl_mvm_scan_params *params, 2434 struct ieee80211_vif *vif, 2435 struct iwl_scan_channel_params_v4 *cp, 2436 u32 channel_cfg_flags) 2437 { 2438 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2439 cp->count = params->n_channels; 2440 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2441 2442 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2443 params->n_channels, 2444 channel_cfg_flags, 2445 vif->type); 2446 } 2447 2448 static void 2449 iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm, 2450 struct iwl_mvm_scan_params *params, 2451 struct ieee80211_vif *vif, 2452 struct iwl_scan_channel_params_v7 *cp, 2453 u32 channel_cfg_flags, 2454 u32 version) 2455 { 2456 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2457 cp->count = params->n_channels; 2458 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2459 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2460 2461 iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp, 2462 params->n_channels, 2463 channel_cfg_flags, 2464 vif->type, version); 2465 2466 if (params->enable_6ghz_passive) { 2467 struct ieee80211_supported_band *sband = 2468 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2469 u32 i; 2470 2471 for (i = 0; i < sband->n_channels; i++) { 2472 struct ieee80211_channel *channel = 2473 &sband->channels[i]; 2474 2475 struct iwl_scan_channel_cfg_umac *cfg = 2476 &cp->channel_config[cp->count]; 2477 2478 if (!cfg80211_channel_is_psc(channel)) 2479 continue; 2480 2481 cfg->channel_num = channel->hw_value; 2482 cfg->v5.iter_count = 1; 2483 cfg->v5.iter_interval = 0; 2484 2485 if (version < 17) { 2486 cfg->flags = 0; 2487 cfg->v2.band = PHY_BAND_6; 2488 } else { 2489 cfg->flags = cpu_to_le32(PHY_BAND_6 << 2490 IWL_CHAN_CFG_FLAGS_BAND_POS); 2491 cfg->v5.psd_20 = 2492 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 2493 } 2494 cp->count++; 2495 } 2496 } 2497 } 2498 2499 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2500 struct iwl_mvm_scan_params *params, int type, 2501 int uid) 2502 { 2503 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2504 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2505 int ret; 2506 u16 gen_flags; 2507 2508 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2509 cmd->uid = cpu_to_le32(uid); 2510 2511 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2512 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2513 &scan_p->general_params, 2514 gen_flags, 0, 12); 2515 2516 ret = iwl_mvm_fill_scan_sched_params(params, 2517 scan_p->periodic_params.schedule, 2518 &scan_p->periodic_params.delay); 2519 if (ret) 2520 return ret; 2521 2522 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2523 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2524 &scan_p->channel_params, 0); 2525 2526 return 0; 2527 } 2528 2529 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2530 struct ieee80211_vif *vif, 2531 struct iwl_mvm_scan_params *params, 2532 int type, int uid, u32 version) 2533 { 2534 struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd; 2535 struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params; 2536 struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params; 2537 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2538 int ret; 2539 u16 gen_flags; 2540 u8 gen_flags2; 2541 u32 bitmap_ssid = 0; 2542 2543 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2544 cmd->uid = cpu_to_le32(uid); 2545 2546 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2547 2548 if (version >= 15) 2549 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type, 2550 gen_flags); 2551 else 2552 gen_flags2 = 0; 2553 2554 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2555 &scan_p->general_params, 2556 gen_flags, gen_flags2, version); 2557 2558 ret = iwl_mvm_fill_scan_sched_params(params, 2559 scan_p->periodic_params.schedule, 2560 &scan_p->periodic_params.delay); 2561 if (ret) 2562 return ret; 2563 2564 if (!params->scan_6ghz) { 2565 iwl_mvm_scan_umac_fill_probe_p_v4(params, 2566 &scan_p->probe_params, 2567 &bitmap_ssid); 2568 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif, 2569 &scan_p->channel_params, 2570 bitmap_ssid, 2571 version); 2572 return 0; 2573 } else { 2574 pb->preq = params->preq; 2575 } 2576 2577 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2578 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2579 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2580 2581 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2582 2583 cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params, 2584 params->n_channels, 2585 pb, cp, vif->type, 2586 version); 2587 if (!cp->count) 2588 return -EINVAL; 2589 2590 if (!params->n_ssids || 2591 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2592 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2593 2594 return 0; 2595 } 2596 2597 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2598 struct iwl_mvm_scan_params *params, int type, 2599 int uid) 2600 { 2601 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2602 } 2603 2604 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2605 struct iwl_mvm_scan_params *params, int type, 2606 int uid) 2607 { 2608 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2609 } 2610 2611 static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2612 struct iwl_mvm_scan_params *params, int type, 2613 int uid) 2614 { 2615 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16); 2616 } 2617 2618 static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2619 struct iwl_mvm_scan_params *params, int type, 2620 int uid) 2621 { 2622 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17); 2623 } 2624 2625 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2626 { 2627 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2628 } 2629 2630 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2631 { 2632 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2633 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2634 2635 /* This looks a bit arbitrary, but the idea is that if we run 2636 * out of possible simultaneous scans and the userspace is 2637 * trying to run a scan type that is already running, we 2638 * return -EBUSY. But if the userspace wants to start a 2639 * different type of scan, we stop the opposite type to make 2640 * space for the new request. The reason is backwards 2641 * compatibility with old wpa_supplicant that wouldn't stop a 2642 * scheduled scan before starting a normal scan. 2643 */ 2644 2645 /* FW supports only a single periodic scan */ 2646 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2647 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2648 return -EBUSY; 2649 2650 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2651 return 0; 2652 2653 /* Use a switch, even though this is a bitmask, so that more 2654 * than one bits set will fall in default and we will warn. 2655 */ 2656 switch (type) { 2657 case IWL_MVM_SCAN_REGULAR: 2658 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2659 return -EBUSY; 2660 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2661 case IWL_MVM_SCAN_SCHED: 2662 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2663 return -EBUSY; 2664 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2665 case IWL_MVM_SCAN_NETDETECT: 2666 /* For non-unified images, there's no need to stop 2667 * anything for net-detect since the firmware is 2668 * restarted anyway. This way, any sched scans that 2669 * were running will be restarted when we resume. 2670 */ 2671 if (!unified_image) 2672 return 0; 2673 2674 /* If this is a unified image and we ran out of scans, 2675 * we need to stop something. Prefer stopping regular 2676 * scans, because the results are useless at this 2677 * point, and we should be able to keep running 2678 * another scheduled scan while suspended. 2679 */ 2680 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2681 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2682 true); 2683 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2684 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2685 true); 2686 /* Something is wrong if no scan was running but we 2687 * ran out of scans. 2688 */ 2689 fallthrough; 2690 default: 2691 WARN_ON(1); 2692 break; 2693 } 2694 2695 return -EIO; 2696 } 2697 2698 #define SCAN_TIMEOUT 30000 2699 2700 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2701 { 2702 struct delayed_work *delayed_work = to_delayed_work(work); 2703 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2704 scan_timeout_dwork); 2705 2706 IWL_ERR(mvm, "regular scan timed out\n"); 2707 2708 iwl_force_nmi(mvm->trans); 2709 } 2710 2711 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2712 struct iwl_mvm_scan_params *params, 2713 struct ieee80211_vif *vif) 2714 { 2715 if (iwl_mvm_is_cdb_supported(mvm)) { 2716 params->type = 2717 iwl_mvm_get_scan_type_band(mvm, vif, 2718 NL80211_BAND_2GHZ); 2719 params->hb_type = 2720 iwl_mvm_get_scan_type_band(mvm, vif, 2721 NL80211_BAND_5GHZ); 2722 } else { 2723 params->type = iwl_mvm_get_scan_type(mvm, vif); 2724 } 2725 } 2726 2727 struct iwl_scan_umac_handler { 2728 u8 version; 2729 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2730 struct iwl_mvm_scan_params *params, int type, int uid); 2731 }; 2732 2733 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2734 .version = _ver, \ 2735 .handler = iwl_mvm_scan_umac_v##_ver, \ 2736 } 2737 2738 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2739 /* set the newest version first to shorten the list traverse time */ 2740 IWL_SCAN_UMAC_HANDLER(17), 2741 IWL_SCAN_UMAC_HANDLER(16), 2742 IWL_SCAN_UMAC_HANDLER(15), 2743 IWL_SCAN_UMAC_HANDLER(14), 2744 IWL_SCAN_UMAC_HANDLER(12), 2745 }; 2746 2747 static void iwl_mvm_mei_scan_work(struct work_struct *wk) 2748 { 2749 struct iwl_mei_scan_filter *scan_filter = 2750 container_of(wk, struct iwl_mei_scan_filter, scan_work); 2751 struct iwl_mvm *mvm = 2752 container_of(scan_filter, struct iwl_mvm, mei_scan_filter); 2753 struct iwl_mvm_csme_conn_info *info; 2754 struct sk_buff *skb; 2755 u8 bssid[ETH_ALEN]; 2756 2757 mutex_lock(&mvm->mutex); 2758 info = iwl_mvm_get_csme_conn_info(mvm); 2759 memcpy(bssid, info->conn_info.bssid, ETH_ALEN); 2760 mutex_unlock(&mvm->mutex); 2761 2762 while ((skb = skb_dequeue(&scan_filter->scan_res))) { 2763 struct ieee80211_mgmt *mgmt = (void *)skb->data; 2764 2765 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) 2766 ieee80211_rx_irqsafe(mvm->hw, skb); 2767 else 2768 kfree_skb(skb); 2769 } 2770 } 2771 2772 void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) 2773 { 2774 skb_queue_head_init(&mei_scan_filter->scan_res); 2775 INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); 2776 } 2777 2778 /* In case CSME is connected and has link protection set, this function will 2779 * override the scan request to scan only the associated channel and only for 2780 * the associated SSID. 2781 */ 2782 static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, 2783 struct iwl_mvm_scan_params *params) 2784 { 2785 struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); 2786 struct iwl_mei_conn_info *conn_info; 2787 struct ieee80211_channel *chan; 2788 int scan_iters, i; 2789 2790 if (!info) { 2791 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); 2792 return; 2793 } 2794 2795 conn_info = &info->conn_info; 2796 if (!info->conn_info.lp_state || !info->conn_info.ssid_len) 2797 return; 2798 2799 if (!params->n_channels || !params->n_ssids) 2800 return; 2801 2802 mvm->mei_scan_filter.is_mei_limited_scan = true; 2803 2804 chan = ieee80211_get_channel(mvm->hw->wiphy, 2805 ieee80211_channel_to_frequency(conn_info->channel, 2806 conn_info->band)); 2807 if (!chan) { 2808 IWL_DEBUG_SCAN(mvm, 2809 "Failed to get CSME channel (chan=%u band=%u)\n", 2810 conn_info->channel, conn_info->band); 2811 return; 2812 } 2813 2814 /* The mei filtered scan must find the AP, otherwise CSME will 2815 * take the NIC ownership. Add several iterations on the channel to 2816 * make the scan more robust. 2817 */ 2818 scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); 2819 params->n_channels = scan_iters; 2820 for (i = 0; i < scan_iters; i++) 2821 params->channels[i] = chan; 2822 2823 IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); 2824 2825 params->n_ssids = 1; 2826 params->ssids[0].ssid_len = conn_info->ssid_len; 2827 memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); 2828 } 2829 2830 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2831 struct ieee80211_vif *vif, 2832 struct iwl_host_cmd *hcmd, 2833 struct iwl_mvm_scan_params *params, 2834 int type) 2835 { 2836 int uid, i, err; 2837 u8 scan_ver; 2838 2839 lockdep_assert_held(&mvm->mutex); 2840 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); 2841 2842 iwl_mvm_mei_limited_scan(mvm, params); 2843 2844 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2845 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2846 2847 return iwl_mvm_scan_lmac(mvm, vif, params); 2848 } 2849 2850 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2851 if (uid < 0) 2852 return uid; 2853 2854 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2855 2856 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2857 IWL_FW_CMD_VER_UNKNOWN); 2858 2859 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2860 const struct iwl_scan_umac_handler *ver_handler = 2861 &iwl_scan_umac_handlers[i]; 2862 2863 if (ver_handler->version != scan_ver) 2864 continue; 2865 2866 err = ver_handler->handler(mvm, vif, params, type, uid); 2867 return err ? : uid; 2868 } 2869 2870 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2871 if (err) 2872 return err; 2873 2874 return uid; 2875 } 2876 2877 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2878 struct ieee80211_vif *current_vif; 2879 bool p2p_go; 2880 enum nl80211_band band; 2881 }; 2882 2883 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2884 struct ieee80211_vif *vif) 2885 { 2886 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2887 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2888 2889 /* exclude the given vif */ 2890 if (vif == data->current_vif) 2891 return; 2892 2893 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) { 2894 u32 link_id; 2895 2896 for (link_id = 0; 2897 link_id < ARRAY_SIZE(mvmvif->link); 2898 link_id++) { 2899 struct iwl_mvm_vif_link_info *link = 2900 mvmvif->link[link_id]; 2901 2902 if (link && link->phy_ctxt->id < NUM_PHY_CTX && 2903 (data->band == NUM_NL80211_BANDS || 2904 link->phy_ctxt->channel->band == data->band)) { 2905 data->p2p_go = true; 2906 break; 2907 } 2908 } 2909 } 2910 } 2911 2912 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2913 struct ieee80211_vif *vif, 2914 bool low_latency, 2915 enum nl80211_band band) 2916 { 2917 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2918 .current_vif = vif, 2919 .p2p_go = false, 2920 .band = band, 2921 }; 2922 2923 if (!low_latency) 2924 return false; 2925 2926 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2927 IEEE80211_IFACE_ITER_NORMAL, 2928 iwl_mvm_scan_respect_p2p_go_iter, 2929 &data); 2930 2931 return data.p2p_go; 2932 } 2933 2934 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2935 struct ieee80211_vif *vif, 2936 enum nl80211_band band) 2937 { 2938 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2939 2940 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2941 } 2942 2943 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2944 struct ieee80211_vif *vif) 2945 { 2946 bool low_latency = iwl_mvm_low_latency(mvm); 2947 2948 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2949 NUM_NL80211_BANDS); 2950 } 2951 2952 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2953 struct iwl_mvm_scan_params *params, 2954 struct ieee80211_vif *vif) 2955 { 2956 if (iwl_mvm_is_cdb_supported(mvm)) { 2957 params->respect_p2p_go = 2958 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2959 NL80211_BAND_2GHZ); 2960 params->respect_p2p_go_hb = 2961 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2962 NL80211_BAND_5GHZ); 2963 } else { 2964 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2965 } 2966 } 2967 2968 static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm, 2969 struct ieee80211_vif *vif, 2970 struct cfg80211_scan_request *req, 2971 struct ieee80211_scan_ies *ies, 2972 int type) 2973 { 2974 struct iwl_host_cmd hcmd = { 2975 .len = { iwl_mvm_scan_size(mvm), }, 2976 .data = { mvm->scan_cmd, }, 2977 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2978 }; 2979 struct iwl_mvm_scan_params params = {}; 2980 int ret, uid; 2981 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2982 2983 lockdep_assert_held(&mvm->mutex); 2984 2985 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2986 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2987 return -EBUSY; 2988 } 2989 2990 ret = iwl_mvm_check_running_scans(mvm, type); 2991 if (ret) 2992 return ret; 2993 2994 /* we should have failed registration if scan_cmd was NULL */ 2995 if (WARN_ON(!mvm->scan_cmd)) 2996 return -ENOMEM; 2997 2998 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2999 return -ENOBUFS; 3000 3001 params.n_ssids = req->n_ssids; 3002 params.flags = req->flags; 3003 params.n_channels = req->n_channels; 3004 params.delay = 0; 3005 params.ssids = req->ssids; 3006 params.channels = req->channels; 3007 params.mac_addr = req->mac_addr; 3008 params.mac_addr_mask = req->mac_addr_mask; 3009 params.no_cck = req->no_cck; 3010 params.pass_all = true; 3011 params.n_match_sets = 0; 3012 params.match_sets = NULL; 3013 ether_addr_copy(params.bssid, req->bssid); 3014 3015 params.scan_plans = &scan_plan; 3016 params.n_scan_plans = 1; 3017 3018 params.n_6ghz_params = req->n_6ghz_params; 3019 params.scan_6ghz_params = req->scan_6ghz_params; 3020 params.scan_6ghz = req->scan_6ghz; 3021 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3022 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3023 3024 if (req->duration) 3025 params.iter_notif = true; 3026 3027 params.tsf_report_link_id = req->tsf_report_link_id; 3028 if (params.tsf_report_link_id < 0) { 3029 if (vif->active_links) 3030 params.tsf_report_link_id = __ffs(vif->active_links); 3031 else 3032 params.tsf_report_link_id = 0; 3033 } 3034 3035 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3036 3037 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 3038 3039 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3040 3041 if (uid < 0) 3042 return uid; 3043 3044 iwl_mvm_pause_tcm(mvm, false); 3045 3046 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3047 if (ret) { 3048 /* If the scan failed, it usually means that the FW was unable 3049 * to allocate the time events. Warn on it, but maybe we 3050 * should try to send the command again with different params. 3051 */ 3052 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 3053 iwl_mvm_resume_tcm(mvm); 3054 return ret; 3055 } 3056 3057 IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n", 3058 type, uid); 3059 3060 mvm->scan_uid_status[uid] = type; 3061 mvm->scan_status |= type; 3062 3063 if (type == IWL_MVM_SCAN_REGULAR) { 3064 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 3065 schedule_delayed_work(&mvm->scan_timeout_dwork, 3066 msecs_to_jiffies(SCAN_TIMEOUT)); 3067 } 3068 3069 if (params.enable_6ghz_passive) 3070 mvm->last_6ghz_passive_scan_jiffies = jiffies; 3071 3072 return 0; 3073 } 3074 3075 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3076 struct cfg80211_scan_request *req, 3077 struct ieee80211_scan_ies *ies) 3078 { 3079 return _iwl_mvm_single_scan_start(mvm, vif, req, ies, 3080 IWL_MVM_SCAN_REGULAR); 3081 } 3082 3083 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 3084 struct ieee80211_vif *vif, 3085 struct cfg80211_sched_scan_request *req, 3086 struct ieee80211_scan_ies *ies, 3087 int type) 3088 { 3089 struct iwl_host_cmd hcmd = { 3090 .len = { iwl_mvm_scan_size(mvm), }, 3091 .data = { mvm->scan_cmd, }, 3092 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 3093 }; 3094 struct iwl_mvm_scan_params params = {}; 3095 int ret, uid; 3096 int i, j; 3097 bool non_psc_included = false; 3098 3099 lockdep_assert_held(&mvm->mutex); 3100 3101 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 3102 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 3103 return -EBUSY; 3104 } 3105 3106 ret = iwl_mvm_check_running_scans(mvm, type); 3107 if (ret) 3108 return ret; 3109 3110 /* we should have failed registration if scan_cmd was NULL */ 3111 if (WARN_ON(!mvm->scan_cmd)) 3112 return -ENOMEM; 3113 3114 3115 params.n_ssids = req->n_ssids; 3116 params.flags = req->flags; 3117 params.n_channels = req->n_channels; 3118 params.ssids = req->ssids; 3119 params.channels = req->channels; 3120 params.mac_addr = req->mac_addr; 3121 params.mac_addr_mask = req->mac_addr_mask; 3122 params.no_cck = false; 3123 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 3124 params.n_match_sets = req->n_match_sets; 3125 params.match_sets = req->match_sets; 3126 eth_broadcast_addr(params.bssid); 3127 if (!req->n_scan_plans) 3128 return -EINVAL; 3129 3130 params.n_scan_plans = req->n_scan_plans; 3131 params.scan_plans = req->scan_plans; 3132 3133 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3134 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3135 3136 /* In theory, LMAC scans can handle a 32-bit delay, but since 3137 * waiting for over 18 hours to start the scan is a bit silly 3138 * and to keep it aligned with UMAC scans (which only support 3139 * 16-bit delays), trim it down to 16-bits. 3140 */ 3141 if (req->delay > U16_MAX) { 3142 IWL_DEBUG_SCAN(mvm, 3143 "delay value is > 16-bits, set to max possible\n"); 3144 params.delay = U16_MAX; 3145 } else { 3146 params.delay = req->delay; 3147 } 3148 3149 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 3150 if (ret) 3151 return ret; 3152 3153 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3154 3155 /* for 6 GHZ band only PSC channels need to be added */ 3156 for (i = 0; i < params.n_channels; i++) { 3157 struct ieee80211_channel *channel = params.channels[i]; 3158 3159 if (channel->band == NL80211_BAND_6GHZ && 3160 !cfg80211_channel_is_psc(channel)) { 3161 non_psc_included = true; 3162 break; 3163 } 3164 } 3165 3166 if (non_psc_included) { 3167 params.channels = kmemdup(params.channels, 3168 sizeof(params.channels[0]) * 3169 params.n_channels, 3170 GFP_KERNEL); 3171 if (!params.channels) 3172 return -ENOMEM; 3173 3174 for (i = j = 0; i < params.n_channels; i++) { 3175 if (params.channels[i]->band == NL80211_BAND_6GHZ && 3176 !cfg80211_channel_is_psc(params.channels[i])) 3177 continue; 3178 params.channels[j++] = params.channels[i]; 3179 } 3180 params.n_channels = j; 3181 } 3182 3183 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 3184 ret = -ENOBUFS; 3185 goto out; 3186 } 3187 3188 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3189 if (uid < 0) { 3190 ret = uid; 3191 goto out; 3192 } 3193 3194 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3195 if (!ret) { 3196 IWL_DEBUG_SCAN(mvm, 3197 "Sched scan request send success: type=%u, uid=%u\n", 3198 type, uid); 3199 mvm->scan_uid_status[uid] = type; 3200 mvm->scan_status |= type; 3201 } else { 3202 /* If the scan failed, it usually means that the FW was unable 3203 * to allocate the time events. Warn on it, but maybe we 3204 * should try to send the command again with different params. 3205 */ 3206 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 3207 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3208 } 3209 3210 out: 3211 if (non_psc_included) 3212 kfree(params.channels); 3213 return ret; 3214 } 3215 3216 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 3217 struct iwl_rx_cmd_buffer *rxb) 3218 { 3219 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3220 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 3221 u32 uid = __le32_to_cpu(notif->uid); 3222 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 3223 bool select_links = false; 3224 3225 mvm->mei_scan_filter.is_mei_limited_scan = false; 3226 3227 IWL_DEBUG_SCAN(mvm, 3228 "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n", 3229 uid, mvm->scan_uid_status[uid], 3230 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3231 "completed" : "aborted", 3232 iwl_mvm_ebs_status_str(notif->ebs_status)); 3233 3234 IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n", 3235 mvm->scan_status); 3236 3237 IWL_DEBUG_SCAN(mvm, 3238 "Scan completed: line=%u, iter=%u, elapsed time=%u\n", 3239 notif->last_schedule, notif->last_iter, 3240 __le32_to_cpu(notif->time_from_last_iter)); 3241 3242 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 3243 return; 3244 3245 /* if the scan is already stopping, we don't need to notify mac80211 */ 3246 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 3247 struct cfg80211_scan_info info = { 3248 .aborted = aborted, 3249 .scan_start_tsf = mvm->scan_start, 3250 }; 3251 struct iwl_mvm_vif *scan_vif = mvm->scan_vif; 3252 struct iwl_mvm_vif_link_info *link_info = 3253 scan_vif->link[mvm->scan_link_id]; 3254 3255 /* It is possible that by the time the scan is complete the link 3256 * was already removed and is not valid. 3257 */ 3258 if (link_info) 3259 memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN); 3260 else 3261 IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n"); 3262 3263 ieee80211_scan_completed(mvm->hw, &info); 3264 mvm->scan_vif = NULL; 3265 cancel_delayed_work(&mvm->scan_timeout_dwork); 3266 iwl_mvm_resume_tcm(mvm); 3267 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 3268 ieee80211_sched_scan_stopped(mvm->hw); 3269 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3270 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) { 3271 IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n"); 3272 /* 3273 * Other scan types won't necessarily scan for the MLD links channels. 3274 * Therefore, only select links after successful internal scan. 3275 */ 3276 select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED; 3277 } 3278 3279 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 3280 3281 IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n", 3282 mvm->scan_status); 3283 3284 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3285 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3286 mvm->last_ebs_successful = false; 3287 3288 mvm->scan_uid_status[uid] = 0; 3289 3290 if (select_links) 3291 wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk); 3292 } 3293 3294 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3295 struct iwl_rx_cmd_buffer *rxb) 3296 { 3297 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3298 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3299 3300 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3301 3302 IWL_DEBUG_SCAN(mvm, 3303 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3304 notif->status, notif->scanned_channels); 3305 3306 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3307 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3308 ieee80211_sched_scan_results(mvm->hw); 3309 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3310 } 3311 3312 IWL_DEBUG_SCAN(mvm, 3313 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3314 mvm->scan_start); 3315 } 3316 3317 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type, bool *wait) 3318 { 3319 struct iwl_umac_scan_abort abort_cmd = {}; 3320 struct iwl_host_cmd cmd = { 3321 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3322 .len = { sizeof(abort_cmd), }, 3323 .data = { &abort_cmd, }, 3324 .flags = CMD_SEND_IN_RFKILL, 3325 }; 3326 3327 int uid, ret; 3328 u32 status = IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND; 3329 3330 lockdep_assert_held(&mvm->mutex); 3331 3332 *wait = true; 3333 3334 /* We should always get a valid index here, because we already 3335 * checked that this type of scan was running in the generic 3336 * code. 3337 */ 3338 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3339 if (WARN_ON_ONCE(uid < 0)) 3340 return uid; 3341 3342 abort_cmd.uid = cpu_to_le32(uid); 3343 3344 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3345 3346 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 3347 3348 IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status); 3349 if (!ret) 3350 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3351 3352 /* Handle the case that the FW is no longer familiar with the scan that 3353 * is to be stopped. In such a case, it is expected that the scan 3354 * complete notification was already received but not yet processed. 3355 * In such a case, there is no need to wait for a scan complete 3356 * notification and the flow should continue similar to the case that 3357 * the scan was really aborted. 3358 */ 3359 if (status == IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND) { 3360 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3361 *wait = false; 3362 } 3363 3364 return ret; 3365 } 3366 3367 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3368 { 3369 struct iwl_notification_wait wait_scan_done; 3370 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3371 SCAN_OFFLOAD_COMPLETE, }; 3372 int ret; 3373 bool wait = true; 3374 3375 lockdep_assert_held(&mvm->mutex); 3376 3377 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3378 scan_done_notif, 3379 ARRAY_SIZE(scan_done_notif), 3380 NULL, NULL); 3381 3382 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3383 3384 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3385 ret = iwl_mvm_umac_scan_abort(mvm, type, &wait); 3386 else 3387 ret = iwl_mvm_lmac_scan_abort(mvm); 3388 3389 if (ret) { 3390 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3391 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3392 return ret; 3393 } else if (!wait) { 3394 IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type); 3395 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3396 return 0; 3397 } 3398 3399 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3400 1 * HZ); 3401 } 3402 3403 static size_t iwl_scan_req_umac_get_size(u8 scan_ver) 3404 { 3405 switch (scan_ver) { 3406 case 12: 3407 return sizeof(struct iwl_scan_req_umac_v12); 3408 case 14: 3409 case 15: 3410 case 16: 3411 case 17: 3412 return sizeof(struct iwl_scan_req_umac_v17); 3413 } 3414 3415 return 0; 3416 } 3417 3418 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) 3419 { 3420 int base_size, tail_size; 3421 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3422 IWL_FW_CMD_VER_UNKNOWN); 3423 3424 base_size = iwl_scan_req_umac_get_size(scan_ver); 3425 if (base_size) 3426 return base_size; 3427 3428 3429 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3430 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3431 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3432 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3433 else if (iwl_mvm_cdb_scan_api(mvm)) 3434 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3435 else 3436 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3437 3438 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3439 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3440 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3441 else 3442 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3443 3444 return base_size + 3445 sizeof(struct iwl_scan_channel_cfg_umac) * 3446 mvm->fw->ucode_capa.n_scan_channels + 3447 tail_size; 3448 } 3449 return sizeof(struct iwl_scan_req_lmac) + 3450 sizeof(struct iwl_scan_channel_cfg_lmac) * 3451 mvm->fw->ucode_capa.n_scan_channels + 3452 sizeof(struct iwl_scan_probe_req_v1); 3453 } 3454 3455 /* 3456 * This function is used in nic restart flow, to inform mac80211 about scans 3457 * that was aborted by restart flow or by an assert. 3458 */ 3459 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3460 { 3461 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3462 int uid, i; 3463 3464 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3465 if (uid >= 0) { 3466 struct cfg80211_scan_info info = { 3467 .aborted = true, 3468 }; 3469 3470 cancel_delayed_work(&mvm->scan_timeout_dwork); 3471 3472 ieee80211_scan_completed(mvm->hw, &info); 3473 mvm->scan_uid_status[uid] = 0; 3474 } 3475 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3476 if (uid >= 0) { 3477 /* Sched scan will be restarted by mac80211 in 3478 * restart_hw, so do not report if FW is about to be 3479 * restarted. 3480 */ 3481 if (!iwlwifi_mod_params.fw_restart) 3482 ieee80211_sched_scan_stopped(mvm->hw); 3483 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3484 mvm->scan_uid_status[uid] = 0; 3485 } 3486 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO); 3487 if (uid >= 0) { 3488 IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n"); 3489 mvm->scan_uid_status[uid] = 0; 3490 } 3491 3492 uid = iwl_mvm_scan_uid_by_status(mvm, 3493 IWL_MVM_SCAN_STOPPING_REGULAR); 3494 if (uid >= 0) 3495 mvm->scan_uid_status[uid] = 0; 3496 3497 uid = iwl_mvm_scan_uid_by_status(mvm, 3498 IWL_MVM_SCAN_STOPPING_SCHED); 3499 if (uid >= 0) 3500 mvm->scan_uid_status[uid] = 0; 3501 3502 uid = iwl_mvm_scan_uid_by_status(mvm, 3503 IWL_MVM_SCAN_STOPPING_INT_MLO); 3504 if (uid >= 0) 3505 mvm->scan_uid_status[uid] = 0; 3506 3507 /* We shouldn't have any UIDs still set. Loop over all the 3508 * UIDs to make sure there's nothing left there and warn if 3509 * any is found. 3510 */ 3511 for (i = 0; i < mvm->max_scans; i++) { 3512 if (WARN_ONCE(mvm->scan_uid_status[i], 3513 "UMAC scan UID %d status was not cleaned\n", 3514 i)) 3515 mvm->scan_uid_status[i] = 0; 3516 } 3517 } else { 3518 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3519 struct cfg80211_scan_info info = { 3520 .aborted = true, 3521 }; 3522 3523 cancel_delayed_work(&mvm->scan_timeout_dwork); 3524 ieee80211_scan_completed(mvm->hw, &info); 3525 } 3526 3527 /* Sched scan will be restarted by mac80211 in 3528 * restart_hw, so do not report if FW is about to be 3529 * restarted. 3530 */ 3531 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3532 !iwlwifi_mod_params.fw_restart) { 3533 ieee80211_sched_scan_stopped(mvm->hw); 3534 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3535 } 3536 } 3537 } 3538 3539 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3540 { 3541 int ret; 3542 3543 IWL_DEBUG_SCAN(mvm, 3544 "Request to stop scan: type=0x%x, status=0x%x\n", 3545 type, mvm->scan_status); 3546 3547 if (!(mvm->scan_status & type)) 3548 return 0; 3549 3550 if (!iwl_trans_device_enabled(mvm->trans)) { 3551 ret = 0; 3552 goto out; 3553 } 3554 3555 ret = iwl_mvm_scan_stop_wait(mvm, type); 3556 if (!ret) 3557 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3558 else 3559 IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n"); 3560 3561 out: 3562 /* Clear the scan status so the next scan requests will 3563 * succeed and mark the scan as stopping, so that the Rx 3564 * handler doesn't do anything, as the scan was stopped from 3565 * above. 3566 */ 3567 mvm->scan_status &= ~type; 3568 3569 if (type == IWL_MVM_SCAN_REGULAR) { 3570 cancel_delayed_work(&mvm->scan_timeout_dwork); 3571 if (notify) { 3572 struct cfg80211_scan_info info = { 3573 .aborted = true, 3574 }; 3575 3576 ieee80211_scan_completed(mvm->hw, &info); 3577 } 3578 } else if (notify) { 3579 ieee80211_sched_scan_stopped(mvm->hw); 3580 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3581 } 3582 3583 return ret; 3584 } 3585 3586 static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm, 3587 struct ieee80211_vif *vif, 3588 struct ieee80211_channel **channels, 3589 size_t n_channels) 3590 { 3591 struct cfg80211_scan_request *req = NULL; 3592 struct ieee80211_scan_ies ies = {}; 3593 size_t size, i; 3594 int ret; 3595 3596 lockdep_assert_held(&mvm->mutex); 3597 3598 IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n", 3599 n_channels); 3600 3601 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif) || 3602 hweight16(vif->valid_links) == 1) 3603 return -EINVAL; 3604 3605 size = struct_size(req, channels, n_channels); 3606 req = kzalloc(size, GFP_KERNEL); 3607 if (!req) 3608 return -ENOMEM; 3609 3610 /* set the requested channels */ 3611 for (i = 0; i < n_channels; i++) 3612 req->channels[i] = channels[i]; 3613 3614 req->n_channels = n_channels; 3615 3616 /* set the rates */ 3617 for (i = 0; i < NUM_NL80211_BANDS; i++) 3618 if (mvm->hw->wiphy->bands[i]) 3619 req->rates[i] = 3620 (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1; 3621 3622 req->wdev = ieee80211_vif_to_wdev(vif); 3623 req->wiphy = mvm->hw->wiphy; 3624 req->scan_start = jiffies; 3625 req->tsf_report_link_id = -1; 3626 3627 ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies, 3628 IWL_MVM_SCAN_INT_MLO); 3629 kfree(req); 3630 3631 IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret); 3632 return ret; 3633 } 3634 3635 int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3636 { 3637 struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS]; 3638 unsigned long usable_links = ieee80211_vif_usable_links(vif); 3639 size_t n_channels = 0; 3640 u8 link_id; 3641 3642 lockdep_assert_held(&mvm->mutex); 3643 3644 if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) { 3645 IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n"); 3646 return -EBUSY; 3647 } 3648 3649 rcu_read_lock(); 3650 3651 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 3652 struct ieee80211_bss_conf *link_conf = 3653 rcu_dereference(vif->link_conf[link_id]); 3654 3655 if (WARN_ON_ONCE(!link_conf)) 3656 continue; 3657 3658 channels[n_channels++] = link_conf->chanreq.oper.chan; 3659 } 3660 3661 rcu_read_unlock(); 3662 3663 if (!n_channels) 3664 return -EINVAL; 3665 3666 return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels); 3667 } 3668 3669 static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm, 3670 enum nl80211_band band, 3671 u16 phy_chan_num) 3672 { 3673 struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band]; 3674 int chan_idx; 3675 3676 if (WARN_ON_ONCE(!sband)) 3677 return -EINVAL; 3678 3679 for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) { 3680 struct ieee80211_channel *channel = &sband->channels[chan_idx]; 3681 3682 if (channel->hw_value == phy_chan_num) 3683 return chan_idx; 3684 } 3685 3686 return -EINVAL; 3687 } 3688 3689 void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm, 3690 struct iwl_rx_cmd_buffer *rxb) 3691 { 3692 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3693 const struct iwl_umac_scan_channel_survey_notif *notif = 3694 (void *)pkt->data; 3695 struct iwl_mvm_acs_survey_channel *info; 3696 enum nl80211_band band; 3697 int chan_idx; 3698 3699 lockdep_assert_held(&mvm->mutex); 3700 3701 if (!mvm->acs_survey) { 3702 size_t n_channels = 0; 3703 3704 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3705 if (!mvm->hw->wiphy->bands[band]) 3706 continue; 3707 3708 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3709 } 3710 3711 mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey, 3712 channels, n_channels), 3713 GFP_KERNEL); 3714 3715 if (!mvm->acs_survey) 3716 return; 3717 3718 mvm->acs_survey->n_channels = n_channels; 3719 n_channels = 0; 3720 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3721 if (!mvm->hw->wiphy->bands[band]) 3722 continue; 3723 3724 mvm->acs_survey->bands[band] = 3725 &mvm->acs_survey->channels[n_channels]; 3726 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3727 } 3728 } 3729 3730 band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band)); 3731 chan_idx = iwl_mvm_chanidx_from_phy(mvm, band, 3732 le32_to_cpu(notif->channel)); 3733 if (WARN_ON_ONCE(chan_idx < 0)) 3734 return; 3735 3736 IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n", 3737 mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq); 3738 3739 info = &mvm->acs_survey->bands[band][chan_idx]; 3740 3741 /* Times are all in ms */ 3742 info->time = le32_to_cpu(notif->active_time); 3743 info->time_busy = le32_to_cpu(notif->busy_time); 3744 info->time_rx = le32_to_cpu(notif->rx_time); 3745 info->time_tx = le32_to_cpu(notif->tx_time); 3746 info->noise = 3747 iwl_average_neg_dbm(notif->noise, ARRAY_SIZE(notif->noise)); 3748 } 3749