1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <net/mac80211.h> 9 #include <linux/crc32.h> 10 11 #include "mvm.h" 12 #include "fw/api/scan.h" 13 #include "iwl-io.h" 14 15 #define IWL_DENSE_EBS_SCAN_RATIO 5 16 #define IWL_SPARSE_EBS_SCAN_RATIO 1 17 18 #define IWL_SCAN_DWELL_ACTIVE 10 19 #define IWL_SCAN_DWELL_PASSIVE 110 20 #define IWL_SCAN_DWELL_FRAGMENTED 44 21 #define IWL_SCAN_DWELL_EXTENDED 90 22 #define IWL_SCAN_NUM_OF_FRAGS 3 23 24 /* adaptive dwell max budget time [TU] for full scan */ 25 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 26 /* adaptive dwell max budget time [TU] for directed scan */ 27 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 28 /* adaptive dwell default high band APs number */ 29 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 30 /* adaptive dwell default low band APs number */ 31 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 32 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 33 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 34 /* number of scan channels */ 35 #define IWL_SCAN_NUM_CHANNELS 112 36 /* adaptive dwell number of APs override mask for p2p friendly GO */ 37 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 38 /* adaptive dwell number of APs override mask for social channels */ 39 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 40 /* adaptive dwell number of APs override for p2p friendly GO channels */ 41 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 42 /* adaptive dwell number of APs override for social channels */ 43 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 44 45 /* minimal number of 2GHz and 5GHz channels in the regular scan request */ 46 #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 47 48 /* Number of iterations on the channel for mei filtered scan */ 49 #define IWL_MEI_SCAN_NUM_ITER 5U 50 51 struct iwl_mvm_scan_timing_params { 52 u32 suspend_time; 53 u32 max_out_time; 54 }; 55 56 static struct iwl_mvm_scan_timing_params scan_timing[] = { 57 [IWL_SCAN_TYPE_UNASSOC] = { 58 .suspend_time = 0, 59 .max_out_time = 0, 60 }, 61 [IWL_SCAN_TYPE_WILD] = { 62 .suspend_time = 30, 63 .max_out_time = 120, 64 }, 65 [IWL_SCAN_TYPE_MILD] = { 66 .suspend_time = 120, 67 .max_out_time = 120, 68 }, 69 [IWL_SCAN_TYPE_FRAGMENTED] = { 70 .suspend_time = 95, 71 .max_out_time = 44, 72 }, 73 [IWL_SCAN_TYPE_FAST_BALANCE] = { 74 .suspend_time = 30, 75 .max_out_time = 37, 76 }, 77 }; 78 79 struct iwl_mvm_scan_params { 80 /* For CDB this is low band scan type, for non-CDB - type. */ 81 enum iwl_mvm_scan_type type; 82 enum iwl_mvm_scan_type hb_type; 83 u32 n_channels; 84 u16 delay; 85 int n_ssids; 86 struct cfg80211_ssid *ssids; 87 struct ieee80211_channel **channels; 88 u32 flags; 89 u8 *mac_addr; 90 u8 *mac_addr_mask; 91 bool no_cck; 92 bool pass_all; 93 int n_match_sets; 94 struct iwl_scan_probe_req preq; 95 struct cfg80211_match_set *match_sets; 96 int n_scan_plans; 97 struct cfg80211_sched_scan_plan *scan_plans; 98 bool iter_notif; 99 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 100 u32 n_6ghz_params; 101 bool scan_6ghz; 102 bool enable_6ghz_passive; 103 bool respect_p2p_go, respect_p2p_go_hb; 104 s8 tsf_report_link_id; 105 u8 bssid[ETH_ALEN] __aligned(2); 106 }; 107 108 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 109 { 110 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 111 112 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 113 return (void *)&cmd->v8.data; 114 115 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 116 return (void *)&cmd->v7.data; 117 118 if (iwl_mvm_cdb_scan_api(mvm)) 119 return (void *)&cmd->v6.data; 120 121 return (void *)&cmd->v1.data; 122 } 123 124 static inline struct iwl_scan_umac_chan_param * 125 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 126 { 127 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 128 129 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 130 return &cmd->v8.channel; 131 132 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 133 return &cmd->v7.channel; 134 135 if (iwl_mvm_cdb_scan_api(mvm)) 136 return &cmd->v6.channel; 137 138 return &cmd->v1.channel; 139 } 140 141 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 142 { 143 if (mvm->scan_rx_ant != ANT_NONE) 144 return mvm->scan_rx_ant; 145 return iwl_mvm_get_valid_rx_ant(mvm); 146 } 147 148 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 149 { 150 u16 rx_chain; 151 u8 rx_ant; 152 153 rx_ant = iwl_mvm_scan_rx_ant(mvm); 154 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 155 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 156 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 157 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 158 return cpu_to_le16(rx_chain); 159 } 160 161 static inline __le32 162 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 163 bool no_cck) 164 { 165 u32 tx_ant; 166 167 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 168 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 169 170 if (band == NL80211_BAND_2GHZ && !no_cck) 171 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 172 tx_ant); 173 else 174 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 175 } 176 177 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 178 { 179 return mvm->tcm.result.global_load; 180 } 181 182 static enum iwl_mvm_traffic_load 183 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 184 { 185 return mvm->tcm.result.band_load[band]; 186 } 187 188 struct iwl_mvm_scan_iter_data { 189 u32 global_cnt; 190 struct ieee80211_vif *current_vif; 191 bool is_dcm_with_p2p_go; 192 }; 193 194 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 195 struct ieee80211_vif *vif) 196 { 197 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 198 struct iwl_mvm_scan_iter_data *data = _data; 199 struct iwl_mvm_vif *curr_mvmvif; 200 201 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && 202 mvmvif->deflink.phy_ctxt && 203 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) 204 data->global_cnt += 1; 205 206 if (!data->current_vif || vif == data->current_vif) 207 return; 208 209 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 210 211 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO && 212 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && 213 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 214 data->is_dcm_with_p2p_go = true; 215 } 216 217 static enum 218 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 219 struct ieee80211_vif *vif, 220 enum iwl_mvm_traffic_load load, 221 bool low_latency) 222 { 223 struct iwl_mvm_scan_iter_data data = { 224 .current_vif = vif, 225 .is_dcm_with_p2p_go = false, 226 .global_cnt = 0, 227 }; 228 229 /* 230 * A scanning AP interface probably wants to generate a survey to do 231 * ACS (automatic channel selection). 232 * Force a non-fragmented scan in that case. 233 */ 234 if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP) 235 return IWL_SCAN_TYPE_WILD; 236 237 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 238 IEEE80211_IFACE_ITER_NORMAL, 239 iwl_mvm_scan_iterator, 240 &data); 241 242 if (!data.global_cnt) 243 return IWL_SCAN_TYPE_UNASSOC; 244 245 if (fw_has_api(&mvm->fw->ucode_capa, 246 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 247 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 248 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 249 return IWL_SCAN_TYPE_FRAGMENTED; 250 251 /* 252 * in case of DCM with P2P GO set all scan requests as 253 * fast-balance scan 254 */ 255 if (vif && vif->type == NL80211_IFTYPE_STATION && 256 data.is_dcm_with_p2p_go) 257 return IWL_SCAN_TYPE_FAST_BALANCE; 258 } 259 260 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 261 return IWL_SCAN_TYPE_MILD; 262 263 return IWL_SCAN_TYPE_WILD; 264 } 265 266 static enum 267 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 268 struct ieee80211_vif *vif) 269 { 270 enum iwl_mvm_traffic_load load; 271 bool low_latency; 272 273 load = iwl_mvm_get_traffic_load(mvm); 274 low_latency = iwl_mvm_low_latency(mvm); 275 276 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 277 } 278 279 static enum 280 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 281 struct ieee80211_vif *vif, 282 enum nl80211_band band) 283 { 284 enum iwl_mvm_traffic_load load; 285 bool low_latency; 286 287 load = iwl_mvm_get_traffic_load_band(mvm, band); 288 low_latency = iwl_mvm_low_latency_band(mvm, band); 289 290 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 291 } 292 293 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 294 { 295 /* require rrm scan whenever the fw supports it */ 296 return fw_has_capa(&mvm->fw->ucode_capa, 297 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 298 } 299 300 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 301 { 302 int max_probe_len; 303 304 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 305 306 /* we create the 802.11 header and SSID element */ 307 max_probe_len -= 24 + 2; 308 309 /* DS parameter set element is added on 2.4GHZ band if required */ 310 if (iwl_mvm_rrm_scan_needed(mvm)) 311 max_probe_len -= 3; 312 313 return max_probe_len; 314 } 315 316 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 317 { 318 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 319 320 /* TODO: [BUG] This function should return the maximum allowed size of 321 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 322 * in the same command. So the correct implementation of this function 323 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 324 * command has only 512 bytes and it would leave us with about 240 325 * bytes for scan IEs, which is clearly not enough. So meanwhile 326 * we will report an incorrect value. This may result in a failure to 327 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 328 * functions with -ENOBUFS, if a large enough probe will be provided. 329 */ 330 return max_ie_len; 331 } 332 333 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 334 struct iwl_rx_cmd_buffer *rxb) 335 { 336 struct iwl_rx_packet *pkt = rxb_addr(rxb); 337 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 338 339 IWL_DEBUG_SCAN(mvm, 340 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 341 notif->status, notif->scanned_channels); 342 343 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 344 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 345 ieee80211_sched_scan_results(mvm->hw); 346 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 347 } 348 } 349 350 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 351 struct iwl_rx_cmd_buffer *rxb) 352 { 353 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 354 ieee80211_sched_scan_results(mvm->hw); 355 } 356 357 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 358 { 359 switch (status) { 360 case IWL_SCAN_EBS_SUCCESS: 361 return "successful"; 362 case IWL_SCAN_EBS_INACTIVE: 363 return "inactive"; 364 case IWL_SCAN_EBS_FAILED: 365 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 366 default: 367 return "failed"; 368 } 369 } 370 371 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 372 struct iwl_rx_cmd_buffer *rxb) 373 { 374 struct iwl_rx_packet *pkt = rxb_addr(rxb); 375 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 376 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 377 378 /* If this happens, the firmware has mistakenly sent an LMAC 379 * notification during UMAC scans -- warn and ignore it. 380 */ 381 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 382 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 383 return; 384 385 /* scan status must be locked for proper checking */ 386 lockdep_assert_held(&mvm->mutex); 387 388 /* We first check if we were stopping a scan, in which case we 389 * just clear the stopping flag. Then we check if it was a 390 * firmware initiated stop, in which case we need to inform 391 * mac80211. 392 * Note that we can have a stopping and a running scan 393 * simultaneously, but we can't have two different types of 394 * scans stopping or running at the same time (since LMAC 395 * doesn't support it). 396 */ 397 398 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 399 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 400 401 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 402 aborted ? "aborted" : "completed", 403 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 404 IWL_DEBUG_SCAN(mvm, 405 "Last line %d, Last iteration %d, Time after last iteration %d\n", 406 scan_notif->last_schedule_line, 407 scan_notif->last_schedule_iteration, 408 __le32_to_cpu(scan_notif->time_after_last_iter)); 409 410 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 411 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 412 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 413 aborted ? "aborted" : "completed", 414 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 415 416 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 417 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 418 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 419 420 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 421 aborted ? "aborted" : "completed", 422 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 423 IWL_DEBUG_SCAN(mvm, 424 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 425 scan_notif->last_schedule_line, 426 scan_notif->last_schedule_iteration, 427 __le32_to_cpu(scan_notif->time_after_last_iter)); 428 429 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 430 ieee80211_sched_scan_stopped(mvm->hw); 431 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 432 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 433 struct cfg80211_scan_info info = { 434 .aborted = aborted, 435 }; 436 437 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 438 aborted ? "aborted" : "completed", 439 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 440 441 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 442 ieee80211_scan_completed(mvm->hw, &info); 443 cancel_delayed_work(&mvm->scan_timeout_dwork); 444 iwl_mvm_resume_tcm(mvm); 445 } else { 446 IWL_ERR(mvm, 447 "got scan complete notification but no scan is running\n"); 448 } 449 450 mvm->last_ebs_successful = 451 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 452 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 453 } 454 455 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 456 { 457 int i; 458 459 for (i = 0; i < PROBE_OPTION_MAX; i++) { 460 if (!ssid_list[i].len) 461 break; 462 if (ssid_list[i].len == ssid_len && 463 !memcmp(ssid_list->ssid, ssid, ssid_len)) 464 return i; 465 } 466 return -1; 467 } 468 469 /* We insert the SSIDs in an inverted order, because the FW will 470 * invert it back. 471 */ 472 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 473 struct iwl_ssid_ie *ssids, 474 u32 *ssid_bitmap) 475 { 476 int i, j; 477 int index; 478 u32 tmp_bitmap = 0; 479 480 /* 481 * copy SSIDs from match list. 482 * iwl_config_sched_scan_profiles() uses the order of these ssids to 483 * config match list. 484 */ 485 for (i = 0, j = params->n_match_sets - 1; 486 j >= 0 && i < PROBE_OPTION_MAX; 487 i++, j--) { 488 /* skip empty SSID matchsets */ 489 if (!params->match_sets[j].ssid.ssid_len) 490 continue; 491 ssids[i].id = WLAN_EID_SSID; 492 ssids[i].len = params->match_sets[j].ssid.ssid_len; 493 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 494 ssids[i].len); 495 } 496 497 /* add SSIDs from scan SSID list */ 498 for (j = params->n_ssids - 1; 499 j >= 0 && i < PROBE_OPTION_MAX; 500 i++, j--) { 501 index = iwl_ssid_exist(params->ssids[j].ssid, 502 params->ssids[j].ssid_len, 503 ssids); 504 if (index < 0) { 505 ssids[i].id = WLAN_EID_SSID; 506 ssids[i].len = params->ssids[j].ssid_len; 507 memcpy(ssids[i].ssid, params->ssids[j].ssid, 508 ssids[i].len); 509 tmp_bitmap |= BIT(i); 510 } else { 511 tmp_bitmap |= BIT(index); 512 } 513 } 514 if (ssid_bitmap) 515 *ssid_bitmap = tmp_bitmap; 516 } 517 518 static int 519 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 520 struct cfg80211_sched_scan_request *req) 521 { 522 struct iwl_scan_offload_profile *profile; 523 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 524 struct iwl_scan_offload_blocklist *blocklist; 525 struct iwl_scan_offload_profile_cfg_data *data; 526 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 527 int profile_cfg_size = sizeof(*data) + 528 sizeof(*profile) * max_profiles; 529 struct iwl_host_cmd cmd = { 530 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 531 .len[1] = profile_cfg_size, 532 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 533 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 534 }; 535 int blocklist_len; 536 int i; 537 int ret; 538 539 if (WARN_ON(req->n_match_sets > max_profiles)) 540 return -EIO; 541 542 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 543 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 544 else 545 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 546 547 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 548 if (!blocklist) 549 return -ENOMEM; 550 551 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 552 if (!profile_cfg_v1) { 553 ret = -ENOMEM; 554 goto free_blocklist; 555 } 556 557 cmd.data[0] = blocklist; 558 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 559 cmd.data[1] = profile_cfg_v1; 560 561 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 562 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 563 struct iwl_scan_offload_profile_cfg *profile_cfg = 564 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 565 566 data = &profile_cfg->data; 567 } else { 568 data = &profile_cfg_v1->data; 569 } 570 571 /* No blocklist configuration */ 572 data->num_profiles = req->n_match_sets; 573 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 574 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 575 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 576 577 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 578 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 579 580 for (i = 0; i < req->n_match_sets; i++) { 581 profile = &profile_cfg_v1->profiles[i]; 582 profile->ssid_index = i; 583 /* Support any cipher and auth algorithm */ 584 profile->unicast_cipher = 0xff; 585 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 586 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 587 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 588 profile->network_type = IWL_NETWORK_TYPE_ANY; 589 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 590 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 591 } 592 593 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 594 595 ret = iwl_mvm_send_cmd(mvm, &cmd); 596 kfree(profile_cfg_v1); 597 free_blocklist: 598 kfree(blocklist); 599 600 return ret; 601 } 602 603 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 604 struct cfg80211_sched_scan_request *req) 605 { 606 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 607 IWL_DEBUG_SCAN(mvm, 608 "Sending scheduled scan with filtering, n_match_sets %d\n", 609 req->n_match_sets); 610 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 611 return false; 612 } 613 614 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 615 616 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 617 return true; 618 } 619 620 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 621 { 622 int ret; 623 struct iwl_host_cmd cmd = { 624 .id = SCAN_OFFLOAD_ABORT_CMD, 625 }; 626 u32 status = CAN_ABORT_STATUS; 627 628 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 629 if (ret) 630 return ret; 631 632 if (status != CAN_ABORT_STATUS) { 633 /* 634 * The scan abort will return 1 for success or 635 * 2 for "failure". A failure condition can be 636 * due to simply not being in an active scan which 637 * can occur if we send the scan abort before the 638 * microcode has notified us that a scan is completed. 639 */ 640 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 641 ret = -ENOENT; 642 } 643 644 return ret; 645 } 646 647 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 648 struct iwl_scan_req_tx_cmd *tx_cmd, 649 bool no_cck) 650 { 651 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 652 TX_CMD_FLG_BT_DIS); 653 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 654 NL80211_BAND_2GHZ, 655 no_cck); 656 657 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 658 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 659 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 660 661 /* 662 * Fw doesn't use this sta anymore, pending deprecation via HOST API 663 * change 664 */ 665 } else { 666 tx_cmd[0].sta_id = 0xff; 667 tx_cmd[1].sta_id = 0xff; 668 } 669 670 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 671 TX_CMD_FLG_BT_DIS); 672 673 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 674 NL80211_BAND_5GHZ, 675 no_cck); 676 } 677 678 static void 679 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 680 struct ieee80211_channel **channels, 681 int n_channels, u32 ssid_bitmap, 682 struct iwl_scan_req_lmac *cmd) 683 { 684 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 685 int i; 686 687 for (i = 0; i < n_channels; i++) { 688 channel_cfg[i].channel_num = 689 cpu_to_le16(channels[i]->hw_value); 690 channel_cfg[i].iter_count = cpu_to_le16(1); 691 channel_cfg[i].iter_interval = 0; 692 channel_cfg[i].flags = 693 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 694 ssid_bitmap); 695 } 696 } 697 698 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 699 size_t len, u8 *const pos) 700 { 701 static const u8 before_ds_params[] = { 702 WLAN_EID_SSID, 703 WLAN_EID_SUPP_RATES, 704 WLAN_EID_REQUEST, 705 WLAN_EID_EXT_SUPP_RATES, 706 }; 707 size_t offs; 708 u8 *newpos = pos; 709 710 if (!iwl_mvm_rrm_scan_needed(mvm)) { 711 memcpy(newpos, ies, len); 712 return newpos + len; 713 } 714 715 offs = ieee80211_ie_split(ies, len, 716 before_ds_params, 717 ARRAY_SIZE(before_ds_params), 718 0); 719 720 memcpy(newpos, ies, offs); 721 newpos += offs; 722 723 /* Add a placeholder for DS Parameter Set element */ 724 *newpos++ = WLAN_EID_DS_PARAMS; 725 *newpos++ = 1; 726 *newpos++ = 0; 727 728 memcpy(newpos, ies + offs, len - offs); 729 newpos += len - offs; 730 731 return newpos; 732 } 733 734 #define WFA_TPC_IE_LEN 9 735 736 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 737 { 738 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 739 pos[1] = WFA_TPC_IE_LEN - 2; 740 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 741 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 742 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 743 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 744 pos[6] = 0; 745 /* pos[7] - tx power will be inserted by the FW */ 746 pos[7] = 0; 747 pos[8] = 0; 748 } 749 750 static void 751 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 752 struct ieee80211_scan_ies *ies, 753 struct iwl_mvm_scan_params *params) 754 { 755 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 756 u8 *pos, *newpos; 757 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 758 params->mac_addr : NULL; 759 760 /* 761 * Unfortunately, right now the offload scan doesn't support randomising 762 * within the firmware, so until the firmware API is ready we implement 763 * it in the driver. This means that the scan iterations won't really be 764 * random, only when it's restarted, but at least that helps a bit. 765 */ 766 if (mac_addr) 767 get_random_mask_addr(frame->sa, mac_addr, 768 params->mac_addr_mask); 769 else 770 memcpy(frame->sa, vif->addr, ETH_ALEN); 771 772 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 773 eth_broadcast_addr(frame->da); 774 ether_addr_copy(frame->bssid, params->bssid); 775 frame->seq_ctrl = 0; 776 777 pos = frame->u.probe_req.variable; 778 *pos++ = WLAN_EID_SSID; 779 *pos++ = 0; 780 781 params->preq.mac_header.offset = 0; 782 params->preq.mac_header.len = cpu_to_le16(24 + 2); 783 784 /* Insert ds parameter set element on 2.4 GHz band */ 785 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 786 ies->ies[NL80211_BAND_2GHZ], 787 ies->len[NL80211_BAND_2GHZ], 788 pos); 789 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 790 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 791 pos = newpos; 792 793 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 794 ies->len[NL80211_BAND_5GHZ]); 795 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 796 params->preq.band_data[1].len = 797 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 798 pos += ies->len[NL80211_BAND_5GHZ]; 799 800 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 801 ies->len[NL80211_BAND_6GHZ]); 802 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 803 params->preq.band_data[2].len = 804 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 805 pos += ies->len[NL80211_BAND_6GHZ]; 806 memcpy(pos, ies->common_ies, ies->common_ie_len); 807 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 808 809 if (iwl_mvm_rrm_scan_needed(mvm) && 810 !fw_has_capa(&mvm->fw->ucode_capa, 811 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 812 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 813 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 814 WFA_TPC_IE_LEN); 815 } else { 816 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 817 } 818 } 819 820 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 821 struct iwl_scan_req_lmac *cmd, 822 struct iwl_mvm_scan_params *params) 823 { 824 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 825 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 826 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 827 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 828 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 829 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 830 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 831 } 832 833 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 834 struct ieee80211_scan_ies *ies, 835 int n_channels) 836 { 837 return ((n_ssids <= PROBE_OPTION_MAX) && 838 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 839 (ies->common_ie_len + 840 ies->len[NL80211_BAND_2GHZ] + 841 ies->len[NL80211_BAND_5GHZ] <= 842 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 843 } 844 845 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 846 struct ieee80211_vif *vif) 847 { 848 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 849 bool low_latency; 850 851 if (iwl_mvm_is_cdb_supported(mvm)) 852 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 853 else 854 low_latency = iwl_mvm_low_latency(mvm); 855 856 /* We can only use EBS if: 857 * 1. the feature is supported; 858 * 2. the last EBS was successful; 859 * 3. if only single scan, the single scan EBS API is supported; 860 * 4. it's not a p2p find operation. 861 * 5. we are not in low latency mode, 862 * or if fragmented ebs is supported by the FW 863 * 6. the VIF is not an AP interface (scan wants survey results) 864 */ 865 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 866 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 867 vif->type != NL80211_IFTYPE_P2P_DEVICE && 868 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) && 869 ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP); 870 } 871 872 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 873 { 874 return params->n_scan_plans == 1 && 875 params->scan_plans[0].iterations == 1; 876 } 877 878 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 879 { 880 return (type == IWL_SCAN_TYPE_FRAGMENTED || 881 type == IWL_SCAN_TYPE_FAST_BALANCE); 882 } 883 884 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 885 struct iwl_mvm_scan_params *params, 886 struct ieee80211_vif *vif) 887 { 888 int flags = 0; 889 890 if (params->n_ssids == 0) 891 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 892 893 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 894 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 895 896 if (iwl_mvm_is_scan_fragmented(params->type)) 897 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 898 899 if (iwl_mvm_rrm_scan_needed(mvm) && 900 fw_has_capa(&mvm->fw->ucode_capa, 901 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 902 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 903 904 if (params->pass_all) 905 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 906 else 907 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 908 909 #ifdef CONFIG_IWLWIFI_DEBUGFS 910 if (mvm->scan_iter_notif_enabled) 911 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 912 #endif 913 914 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 915 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 916 917 if (iwl_mvm_is_regular_scan(params) && 918 vif->type != NL80211_IFTYPE_P2P_DEVICE && 919 !iwl_mvm_is_scan_fragmented(params->type)) 920 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 921 922 return flags; 923 } 924 925 static void 926 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 927 struct iwl_scan_probe_req *src_p_req) 928 { 929 int i; 930 931 p_req->mac_header = src_p_req->mac_header; 932 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 933 p_req->band_data[i] = src_p_req->band_data[i]; 934 p_req->common_data = src_p_req->common_data; 935 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 936 } 937 938 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 939 struct iwl_mvm_scan_params *params) 940 { 941 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 942 struct iwl_scan_probe_req_v1 *preq = 943 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 944 mvm->fw->ucode_capa.n_scan_channels); 945 u32 ssid_bitmap = 0; 946 int i; 947 u8 band; 948 949 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 950 return -EINVAL; 951 952 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 953 954 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 955 cmd->iter_num = cpu_to_le32(1); 956 cmd->n_channels = (u8)params->n_channels; 957 958 cmd->delay = cpu_to_le32(params->delay); 959 960 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 961 vif)); 962 963 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 964 cmd->flags = cpu_to_le32(band); 965 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 966 MAC_FILTER_IN_BEACON); 967 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 968 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 969 970 /* this API uses bits 1-20 instead of 0-19 */ 971 ssid_bitmap <<= 1; 972 973 for (i = 0; i < params->n_scan_plans; i++) { 974 struct cfg80211_sched_scan_plan *scan_plan = 975 ¶ms->scan_plans[i]; 976 977 cmd->schedule[i].delay = 978 cpu_to_le16(scan_plan->interval); 979 cmd->schedule[i].iterations = scan_plan->iterations; 980 cmd->schedule[i].full_scan_mul = 1; 981 } 982 983 /* 984 * If the number of iterations of the last scan plan is set to 985 * zero, it should run infinitely. However, this is not always the case. 986 * For example, when regular scan is requested the driver sets one scan 987 * plan with one iteration. 988 */ 989 if (!cmd->schedule[i - 1].iterations) 990 cmd->schedule[i - 1].iterations = 0xff; 991 992 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 993 cmd->channel_opt[0].flags = 994 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 995 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 996 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 997 cmd->channel_opt[0].non_ebs_ratio = 998 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 999 cmd->channel_opt[1].flags = 1000 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1001 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1002 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1003 cmd->channel_opt[1].non_ebs_ratio = 1004 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1005 } 1006 1007 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1008 params->n_channels, ssid_bitmap, cmd); 1009 1010 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1011 1012 return 0; 1013 } 1014 1015 static int rate_to_scan_rate_flag(unsigned int rate) 1016 { 1017 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1018 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1019 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1020 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1021 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1022 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1023 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1024 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1025 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1026 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1027 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1028 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1029 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1030 }; 1031 1032 return rate_to_scan_rate[rate]; 1033 } 1034 1035 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1036 { 1037 struct ieee80211_supported_band *band; 1038 unsigned int rates = 0; 1039 int i; 1040 1041 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1042 for (i = 0; i < band->n_bitrates; i++) 1043 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1044 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1045 for (i = 0; i < band->n_bitrates; i++) 1046 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1047 1048 /* Set both basic rates and supported rates */ 1049 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1050 1051 return cpu_to_le32(rates); 1052 } 1053 1054 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1055 struct iwl_scan_dwell *dwell) 1056 { 1057 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1058 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1059 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1060 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1061 } 1062 1063 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1064 u32 max_channels) 1065 { 1066 struct ieee80211_supported_band *band; 1067 int i, j = 0; 1068 1069 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1070 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1071 channels[j] = band->channels[i].hw_value; 1072 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1073 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1074 channels[j] = band->channels[i].hw_value; 1075 } 1076 1077 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1078 u32 flags, u8 channel_flags, 1079 u32 max_channels) 1080 { 1081 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1082 struct iwl_scan_config_v1 *cfg = config; 1083 1084 cfg->flags = cpu_to_le32(flags); 1085 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1086 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1087 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1088 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1089 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1090 1091 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1092 1093 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1094 1095 /* This function should not be called when using ADD_STA ver >=12 */ 1096 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1097 1098 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1099 cfg->channel_flags = channel_flags; 1100 1101 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1102 } 1103 1104 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1105 u32 flags, u8 channel_flags, 1106 u32 max_channels) 1107 { 1108 struct iwl_scan_config_v2 *cfg = config; 1109 1110 cfg->flags = cpu_to_le32(flags); 1111 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1112 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1113 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1114 1115 if (iwl_mvm_is_cdb_supported(mvm)) { 1116 enum iwl_mvm_scan_type lb_type, hb_type; 1117 1118 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1119 NL80211_BAND_2GHZ); 1120 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1121 NL80211_BAND_5GHZ); 1122 1123 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1124 cpu_to_le32(scan_timing[lb_type].max_out_time); 1125 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1126 cpu_to_le32(scan_timing[lb_type].suspend_time); 1127 1128 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1129 cpu_to_le32(scan_timing[hb_type].max_out_time); 1130 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1131 cpu_to_le32(scan_timing[hb_type].suspend_time); 1132 } else { 1133 enum iwl_mvm_scan_type type = 1134 iwl_mvm_get_scan_type(mvm, NULL); 1135 1136 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1137 cpu_to_le32(scan_timing[type].max_out_time); 1138 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1139 cpu_to_le32(scan_timing[type].suspend_time); 1140 } 1141 1142 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1143 1144 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1145 1146 /* This function should not be called when using ADD_STA ver >=12 */ 1147 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1148 1149 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1150 cfg->channel_flags = channel_flags; 1151 1152 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1153 } 1154 1155 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1156 { 1157 void *cfg; 1158 int ret, cmd_size; 1159 struct iwl_host_cmd cmd = { 1160 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1161 }; 1162 enum iwl_mvm_scan_type type; 1163 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1164 int num_channels = 1165 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1166 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1167 u32 flags; 1168 u8 channel_flags; 1169 1170 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1171 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1172 1173 if (iwl_mvm_is_cdb_supported(mvm)) { 1174 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1175 NL80211_BAND_2GHZ); 1176 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1177 NL80211_BAND_5GHZ); 1178 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1179 return 0; 1180 } else { 1181 type = iwl_mvm_get_scan_type(mvm, NULL); 1182 if (type == mvm->scan_type) 1183 return 0; 1184 } 1185 1186 if (iwl_mvm_cdb_scan_api(mvm)) 1187 cmd_size = sizeof(struct iwl_scan_config_v2); 1188 else 1189 cmd_size = sizeof(struct iwl_scan_config_v1); 1190 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1191 1192 cfg = kzalloc(cmd_size, GFP_KERNEL); 1193 if (!cfg) 1194 return -ENOMEM; 1195 1196 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1197 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1198 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1199 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1200 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1201 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1202 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1203 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1204 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1205 SCAN_CONFIG_N_CHANNELS(num_channels) | 1206 (iwl_mvm_is_scan_fragmented(type) ? 1207 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1208 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1209 1210 channel_flags = IWL_CHANNEL_FLAG_EBS | 1211 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1212 IWL_CHANNEL_FLAG_EBS_ADD | 1213 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1214 1215 /* 1216 * Check for fragmented scan on LMAC2 - high band. 1217 * LMAC1 - low band is checked above. 1218 */ 1219 if (iwl_mvm_cdb_scan_api(mvm)) { 1220 if (iwl_mvm_is_cdb_supported(mvm)) 1221 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1222 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1223 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1224 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1225 num_channels); 1226 } else { 1227 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1228 num_channels); 1229 } 1230 1231 cmd.data[0] = cfg; 1232 cmd.len[0] = cmd_size; 1233 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1234 1235 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1236 1237 ret = iwl_mvm_send_cmd(mvm, &cmd); 1238 if (!ret) { 1239 mvm->scan_type = type; 1240 mvm->hb_scan_type = hb_type; 1241 } 1242 1243 kfree(cfg); 1244 return ret; 1245 } 1246 1247 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1248 { 1249 struct iwl_scan_config cfg; 1250 struct iwl_host_cmd cmd = { 1251 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1252 .len[0] = sizeof(cfg), 1253 .data[0] = &cfg, 1254 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1255 }; 1256 1257 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1258 return iwl_mvm_legacy_config_scan(mvm); 1259 1260 memset(&cfg, 0, sizeof(cfg)); 1261 1262 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 1263 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1264 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1265 /* 1266 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1267 * version 5. 1268 */ 1269 cfg.bcast_sta_id = 0xff; 1270 } 1271 1272 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1273 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1274 1275 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1276 1277 return iwl_mvm_send_cmd(mvm, &cmd); 1278 } 1279 1280 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1281 { 1282 int i; 1283 1284 for (i = 0; i < mvm->max_scans; i++) 1285 if (mvm->scan_uid_status[i] == status) 1286 return i; 1287 1288 return -ENOENT; 1289 } 1290 1291 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1292 struct iwl_scan_req_umac *cmd, 1293 struct iwl_mvm_scan_params *params) 1294 { 1295 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1296 u8 active_dwell, passive_dwell; 1297 1298 timing = &scan_timing[params->type]; 1299 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1300 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1301 1302 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1303 cmd->v7.adwell_default_n_aps_social = 1304 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1305 cmd->v7.adwell_default_n_aps = 1306 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1307 1308 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1309 cmd->v9.adwell_default_hb_n_aps = 1310 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1311 1312 /* if custom max budget was configured with debugfs */ 1313 if (IWL_MVM_ADWELL_MAX_BUDGET) 1314 cmd->v7.adwell_max_budget = 1315 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1316 else if (params->n_ssids && params->ssids[0].ssid_len) 1317 cmd->v7.adwell_max_budget = 1318 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1319 else 1320 cmd->v7.adwell_max_budget = 1321 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1322 1323 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1324 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1325 cpu_to_le32(timing->max_out_time); 1326 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1327 cpu_to_le32(timing->suspend_time); 1328 1329 if (iwl_mvm_is_cdb_supported(mvm)) { 1330 hb_timing = &scan_timing[params->hb_type]; 1331 1332 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1333 cpu_to_le32(hb_timing->max_out_time); 1334 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1335 cpu_to_le32(hb_timing->suspend_time); 1336 } 1337 1338 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1339 cmd->v7.active_dwell = active_dwell; 1340 cmd->v7.passive_dwell = passive_dwell; 1341 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1342 } else { 1343 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1344 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1345 if (iwl_mvm_is_cdb_supported(mvm)) { 1346 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1347 active_dwell; 1348 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1349 passive_dwell; 1350 } 1351 } 1352 } else { 1353 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1354 cmd->v1.active_dwell = active_dwell; 1355 cmd->v1.passive_dwell = passive_dwell; 1356 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1357 1358 if (iwl_mvm_is_cdb_supported(mvm)) { 1359 hb_timing = &scan_timing[params->hb_type]; 1360 1361 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1362 cpu_to_le32(hb_timing->max_out_time); 1363 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1364 cpu_to_le32(hb_timing->suspend_time); 1365 } 1366 1367 if (iwl_mvm_cdb_scan_api(mvm)) { 1368 cmd->v6.scan_priority = 1369 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1370 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1371 cpu_to_le32(timing->max_out_time); 1372 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1373 cpu_to_le32(timing->suspend_time); 1374 } else { 1375 cmd->v1.scan_priority = 1376 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1377 cmd->v1.max_out_time = 1378 cpu_to_le32(timing->max_out_time); 1379 cmd->v1.suspend_time = 1380 cpu_to_le32(timing->suspend_time); 1381 } 1382 } 1383 1384 if (iwl_mvm_is_regular_scan(params)) 1385 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1386 else 1387 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1388 } 1389 1390 static u32 iwl_mvm_scan_umac_ooc_priority(int type) 1391 { 1392 if (type == IWL_MVM_SCAN_REGULAR) 1393 return IWL_SCAN_PRIORITY_EXT_6; 1394 if (type == IWL_MVM_SCAN_INT_MLO) 1395 return IWL_SCAN_PRIORITY_EXT_4; 1396 1397 return IWL_SCAN_PRIORITY_EXT_2; 1398 } 1399 1400 static void 1401 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1402 struct iwl_scan_general_params_v11 *general_params, 1403 struct iwl_mvm_scan_params *params) 1404 { 1405 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1406 u8 active_dwell, passive_dwell; 1407 1408 timing = &scan_timing[params->type]; 1409 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1410 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1411 1412 general_params->adwell_default_social_chn = 1413 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1414 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1415 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1416 1417 /* if custom max budget was configured with debugfs */ 1418 if (IWL_MVM_ADWELL_MAX_BUDGET) 1419 general_params->adwell_max_budget = 1420 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1421 else if (params->n_ssids && params->ssids[0].ssid_len) 1422 general_params->adwell_max_budget = 1423 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1424 else 1425 general_params->adwell_max_budget = 1426 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1427 1428 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1429 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1430 cpu_to_le32(timing->max_out_time); 1431 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1432 cpu_to_le32(timing->suspend_time); 1433 1434 hb_timing = &scan_timing[params->hb_type]; 1435 1436 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1437 cpu_to_le32(hb_timing->max_out_time); 1438 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1439 cpu_to_le32(hb_timing->suspend_time); 1440 1441 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1442 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1443 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1444 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1445 } 1446 1447 struct iwl_mvm_scan_channel_segment { 1448 u8 start_idx; 1449 u8 end_idx; 1450 u8 first_channel_id; 1451 u8 last_channel_id; 1452 u8 channel_spacing_shift; 1453 u8 band; 1454 }; 1455 1456 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1457 { 1458 .start_idx = 0, 1459 .end_idx = 13, 1460 .first_channel_id = 1, 1461 .last_channel_id = 14, 1462 .channel_spacing_shift = 0, 1463 .band = PHY_BAND_24 1464 }, 1465 { 1466 .start_idx = 14, 1467 .end_idx = 41, 1468 .first_channel_id = 36, 1469 .last_channel_id = 144, 1470 .channel_spacing_shift = 2, 1471 .band = PHY_BAND_5 1472 }, 1473 { 1474 .start_idx = 42, 1475 .end_idx = 50, 1476 .first_channel_id = 149, 1477 .last_channel_id = 181, 1478 .channel_spacing_shift = 2, 1479 .band = PHY_BAND_5 1480 }, 1481 { 1482 .start_idx = 51, 1483 .end_idx = 111, 1484 .first_channel_id = 1, 1485 .last_channel_id = 241, 1486 .channel_spacing_shift = 2, 1487 .band = PHY_BAND_6 1488 }, 1489 }; 1490 1491 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1492 { 1493 int i, index; 1494 1495 if (!channel_id) 1496 return -EINVAL; 1497 1498 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1499 const struct iwl_mvm_scan_channel_segment *ch_segment = 1500 &scan_channel_segments[i]; 1501 u32 ch_offset; 1502 1503 if (ch_segment->band != band || 1504 ch_segment->first_channel_id > channel_id || 1505 ch_segment->last_channel_id < channel_id) 1506 continue; 1507 1508 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1509 ch_segment->channel_spacing_shift; 1510 1511 index = scan_channel_segments[i].start_idx + ch_offset; 1512 if (index < IWL_SCAN_NUM_CHANNELS) 1513 return index; 1514 1515 break; 1516 } 1517 1518 return -EINVAL; 1519 } 1520 1521 static const u8 p2p_go_friendly_chs[] = { 1522 36, 40, 44, 48, 149, 153, 157, 161, 165, 1523 }; 1524 1525 static const u8 social_chs[] = { 1526 1, 6, 11 1527 }; 1528 1529 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1530 u8 ch_id, u8 band, u8 *ch_bitmap, 1531 size_t bitmap_n_entries) 1532 { 1533 int i; 1534 1535 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1536 return; 1537 1538 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1539 if (p2p_go_friendly_chs[i] == ch_id) { 1540 int ch_idx, bitmap_idx; 1541 1542 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1543 if (ch_idx < 0) 1544 return; 1545 1546 bitmap_idx = ch_idx / 8; 1547 if (bitmap_idx >= bitmap_n_entries) 1548 return; 1549 1550 ch_idx = ch_idx % 8; 1551 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1552 1553 return; 1554 } 1555 } 1556 } 1557 1558 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1559 { 1560 int i; 1561 u32 flags = 0; 1562 1563 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1564 goto out; 1565 1566 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1567 if (p2p_go_friendly_chs[i] == ch_id) { 1568 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1569 break; 1570 } 1571 } 1572 1573 if (flags) 1574 goto out; 1575 1576 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1577 if (social_chs[i] == ch_id) { 1578 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1579 break; 1580 } 1581 } 1582 1583 out: 1584 return flags; 1585 } 1586 1587 static void 1588 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1589 struct ieee80211_channel **channels, 1590 int n_channels, u32 flags, 1591 struct iwl_scan_channel_cfg_umac *channel_cfg) 1592 { 1593 int i; 1594 1595 for (i = 0; i < n_channels; i++) { 1596 channel_cfg[i].flags = cpu_to_le32(flags); 1597 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1598 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1599 enum nl80211_band band = channels[i]->band; 1600 1601 channel_cfg[i].v2.band = 1602 iwl_mvm_phy_band_from_nl80211(band); 1603 channel_cfg[i].v2.iter_count = 1; 1604 channel_cfg[i].v2.iter_interval = 0; 1605 } else { 1606 channel_cfg[i].v1.iter_count = 1; 1607 channel_cfg[i].v1.iter_interval = 0; 1608 } 1609 } 1610 } 1611 1612 static void 1613 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1614 struct ieee80211_channel **channels, 1615 struct iwl_scan_channel_params_v4 *cp, 1616 int n_channels, u32 flags, 1617 enum nl80211_iftype vif_type) 1618 { 1619 u8 *bitmap = cp->adwell_ch_override_bitmap; 1620 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1621 int i; 1622 1623 for (i = 0; i < n_channels; i++) { 1624 enum nl80211_band band = channels[i]->band; 1625 struct iwl_scan_channel_cfg_umac *cfg = 1626 &cp->channel_config[i]; 1627 1628 cfg->flags = cpu_to_le32(flags); 1629 cfg->v2.channel_num = channels[i]->hw_value; 1630 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1631 cfg->v2.iter_count = 1; 1632 cfg->v2.iter_interval = 0; 1633 1634 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1635 cfg->v2.channel_num, 1636 cfg->v2.band, bitmap, 1637 bitmap_n_entries); 1638 } 1639 } 1640 1641 static void 1642 iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm, 1643 struct ieee80211_channel **channels, 1644 struct iwl_scan_channel_params_v7 *cp, 1645 int n_channels, u32 flags, 1646 enum nl80211_iftype vif_type, u32 version) 1647 { 1648 int i; 1649 1650 for (i = 0; i < n_channels; i++) { 1651 enum nl80211_band band = channels[i]->band; 1652 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1653 u32 n_aps_flag = 1654 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1655 channels[i]->hw_value); 1656 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band); 1657 1658 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1659 cfg->v2.channel_num = channels[i]->hw_value; 1660 if (cfg80211_channel_is_psc(channels[i])) 1661 cfg->flags = 0; 1662 cfg->v2.iter_count = 1; 1663 cfg->v2.iter_interval = 0; 1664 if (version < 17) 1665 cfg->v2.band = iwl_band; 1666 else 1667 cfg->flags |= cpu_to_le32((iwl_band << 1668 IWL_CHAN_CFG_FLAGS_BAND_POS)); 1669 } 1670 } 1671 1672 static void 1673 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1674 struct iwl_mvm_scan_params *params, 1675 struct iwl_scan_probe_params_v4 *pp) 1676 { 1677 int j, idex_s = 0, idex_b = 0; 1678 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1679 params->scan_6ghz_params; 1680 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1681 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1682 1683 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1684 j++) { 1685 if (!params->ssids[j].ssid_len) 1686 continue; 1687 1688 pp->short_ssid[idex_s] = 1689 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1690 params->ssids[j].ssid_len)); 1691 1692 if (hidden_supported) { 1693 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1694 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1695 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1696 params->ssids[j].ssid_len); 1697 } 1698 idex_s++; 1699 } 1700 1701 /* 1702 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1703 * collocated parameters. This might not be optimal, as this processing 1704 * does not (yet) correspond to the actual channels, so it is possible 1705 * that some entries would be left out. 1706 * 1707 * TODO: improve this logic. 1708 */ 1709 for (j = 0; j < params->n_6ghz_params; j++) { 1710 int k; 1711 1712 /* First, try to place the short SSID */ 1713 if (scan_6ghz_params[j].short_ssid_valid) { 1714 for (k = 0; k < idex_s; k++) { 1715 if (pp->short_ssid[k] == 1716 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1717 break; 1718 } 1719 1720 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1721 pp->short_ssid[idex_s++] = 1722 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1723 } 1724 } 1725 1726 /* try to place BSSID for the same entry */ 1727 for (k = 0; k < idex_b; k++) { 1728 if (!memcmp(&pp->bssid_array[k], 1729 scan_6ghz_params[j].bssid, ETH_ALEN)) 1730 break; 1731 } 1732 1733 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE && 1734 !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid), 1735 "scan: invalid BSSID at index %u, index_b=%u\n", 1736 j, idex_b)) { 1737 memcpy(&pp->bssid_array[idex_b++], 1738 scan_6ghz_params[j].bssid, ETH_ALEN); 1739 } 1740 } 1741 1742 pp->short_ssid_num = idex_s; 1743 pp->bssid_num = idex_b; 1744 } 1745 1746 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */ 1747 static u32 1748 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm, 1749 struct iwl_mvm_scan_params *params, 1750 u32 n_channels, 1751 struct iwl_scan_probe_params_v4 *pp, 1752 struct iwl_scan_channel_params_v7 *cp, 1753 enum nl80211_iftype vif_type, 1754 u32 version) 1755 { 1756 int i; 1757 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1758 params->scan_6ghz_params; 1759 u32 ch_cnt; 1760 1761 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1762 struct iwl_scan_channel_cfg_umac *cfg = 1763 &cp->channel_config[ch_cnt]; 1764 1765 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1766 u8 j, k, n_s_ssids = 0, n_bssids = 0; 1767 u8 max_s_ssids, max_bssids; 1768 bool force_passive = false, found = false, allow_passive = true, 1769 unsolicited_probe_on_chan = false, psc_no_listen = false; 1770 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 1771 1772 /* 1773 * Avoid performing passive scan on non PSC channels unless the 1774 * scan is specifically a passive scan, i.e., no SSIDs 1775 * configured in the scan command. 1776 */ 1777 if (!cfg80211_channel_is_psc(params->channels[i]) && 1778 !params->n_6ghz_params && params->n_ssids) 1779 continue; 1780 1781 cfg->v1.channel_num = params->channels[i]->hw_value; 1782 if (version < 17) 1783 cfg->v2.band = PHY_BAND_6; 1784 else 1785 cfg->flags |= cpu_to_le32(PHY_BAND_6 << 1786 IWL_CHAN_CFG_FLAGS_BAND_POS); 1787 1788 cfg->v5.iter_count = 1; 1789 cfg->v5.iter_interval = 0; 1790 1791 for (j = 0; j < params->n_6ghz_params; j++) { 1792 s8 tmp_psd_20; 1793 1794 if (!(scan_6ghz_params[j].channel_idx == i)) 1795 continue; 1796 1797 unsolicited_probe_on_chan |= 1798 scan_6ghz_params[j].unsolicited_probe; 1799 1800 /* Use the highest PSD value allowed as advertised by 1801 * APs for this channel 1802 */ 1803 tmp_psd_20 = scan_6ghz_params[j].psd_20; 1804 if (tmp_psd_20 != 1805 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED && 1806 (psd_20 == 1807 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED || 1808 psd_20 < tmp_psd_20)) 1809 psd_20 = tmp_psd_20; 1810 1811 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1812 } 1813 1814 /* 1815 * In the following cases apply passive scan: 1816 * 1. Non fragmented scan: 1817 * - PSC channel with NO_LISTEN_FLAG on should be treated 1818 * like non PSC channel 1819 * - Non PSC channel with more than 3 short SSIDs or more 1820 * than 9 BSSIDs. 1821 * - Non PSC Channel with unsolicited probe response and 1822 * more than 2 short SSIDs or more than 6 BSSIDs. 1823 * - PSC channel with more than 2 short SSIDs or more than 1824 * 6 BSSIDs. 1825 * 3. Fragmented scan: 1826 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1827 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1828 * - Non PSC channel with unsolicited probe response and 1829 * more than 1 SSID or more than 3 BSSIDs. 1830 */ 1831 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1832 if (!cfg80211_channel_is_psc(params->channels[i]) || 1833 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1834 if (unsolicited_probe_on_chan) { 1835 max_s_ssids = 2; 1836 max_bssids = 6; 1837 } else { 1838 max_s_ssids = 3; 1839 max_bssids = 9; 1840 } 1841 } else { 1842 max_s_ssids = 2; 1843 max_bssids = 6; 1844 } 1845 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1846 max_s_ssids = 1; 1847 max_bssids = 3; 1848 } else { 1849 if (unsolicited_probe_on_chan) { 1850 max_s_ssids = 1; 1851 max_bssids = 3; 1852 } else { 1853 max_s_ssids = 2; 1854 max_bssids = 6; 1855 } 1856 } 1857 1858 /* 1859 * The optimize the scan time, i.e., reduce the scan dwell time 1860 * on each channel, the below logic tries to set 3 direct BSSID 1861 * probe requests for each broadcast probe request with a short 1862 * SSID. 1863 * TODO: improve this logic 1864 */ 1865 for (j = 0; j < params->n_6ghz_params; j++) { 1866 if (!(scan_6ghz_params[j].channel_idx == i)) 1867 continue; 1868 1869 found = false; 1870 1871 for (k = 0; 1872 k < pp->short_ssid_num && n_s_ssids < max_s_ssids; 1873 k++) { 1874 if (!scan_6ghz_params[j].unsolicited_probe && 1875 le32_to_cpu(pp->short_ssid[k]) == 1876 scan_6ghz_params[j].short_ssid) { 1877 /* Relevant short SSID bit set */ 1878 if (s_ssid_bitmap & BIT(k)) { 1879 found = true; 1880 break; 1881 } 1882 1883 /* 1884 * Prefer creating BSSID entries unless 1885 * the short SSID probe can be done in 1886 * the same channel dwell iteration. 1887 * 1888 * We also need to create a short SSID 1889 * entry for any hidden AP. 1890 */ 1891 if (3 * n_s_ssids > n_bssids && 1892 !pp->direct_scan[k].len) 1893 break; 1894 1895 /* Hidden AP, cannot do passive scan */ 1896 if (pp->direct_scan[k].len) 1897 allow_passive = false; 1898 1899 s_ssid_bitmap |= BIT(k); 1900 n_s_ssids++; 1901 found = true; 1902 break; 1903 } 1904 } 1905 1906 if (found) 1907 continue; 1908 1909 for (k = 0; k < pp->bssid_num; k++) { 1910 if (!memcmp(&pp->bssid_array[k], 1911 scan_6ghz_params[j].bssid, 1912 ETH_ALEN)) { 1913 if (!(bssid_bitmap & BIT(k))) { 1914 if (n_bssids < max_bssids) { 1915 bssid_bitmap |= BIT(k); 1916 n_bssids++; 1917 } else { 1918 force_passive = TRUE; 1919 } 1920 } 1921 break; 1922 } 1923 } 1924 } 1925 1926 if (cfg80211_channel_is_psc(params->channels[i]) && 1927 psc_no_listen) 1928 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1929 1930 if (unsolicited_probe_on_chan) 1931 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1932 1933 if ((allow_passive && force_passive) || 1934 (!(bssid_bitmap | s_ssid_bitmap) && 1935 !cfg80211_channel_is_psc(params->channels[i]))) 1936 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1937 else 1938 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1939 1940 cfg->flags |= cpu_to_le32(flags); 1941 if (version >= 17) 1942 cfg->v5.psd_20 = psd_20; 1943 1944 ch_cnt++; 1945 } 1946 1947 if (params->n_channels > ch_cnt) 1948 IWL_DEBUG_SCAN(mvm, 1949 "6GHz: reducing number channels: (%u->%u)\n", 1950 params->n_channels, ch_cnt); 1951 1952 return ch_cnt; 1953 } 1954 1955 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1956 struct iwl_mvm_scan_params *params, 1957 struct ieee80211_vif *vif) 1958 { 1959 u8 flags = 0; 1960 1961 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1962 1963 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1964 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1965 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1966 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1967 1968 /* set fragmented ebs for fragmented scan on HB channels */ 1969 if ((!iwl_mvm_is_cdb_supported(mvm) && 1970 iwl_mvm_is_scan_fragmented(params->type)) || 1971 (iwl_mvm_is_cdb_supported(mvm) && 1972 iwl_mvm_is_scan_fragmented(params->hb_type))) 1973 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1974 1975 /* 1976 * force EBS in case the scan is a fragmented and there is a need to take P2P 1977 * GO operation into consideration during scan operation. 1978 */ 1979 if ((!iwl_mvm_is_cdb_supported(mvm) && 1980 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1981 (iwl_mvm_is_cdb_supported(mvm) && 1982 iwl_mvm_is_scan_fragmented(params->hb_type) && 1983 params->respect_p2p_go_hb)) { 1984 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 1985 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 1986 } 1987 1988 return flags; 1989 } 1990 1991 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 1992 struct iwl_mvm_scan_params *params, 1993 struct ieee80211_vif *vif) 1994 { 1995 struct ieee80211_supported_band *sband = 1996 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 1997 u32 n_disabled, i; 1998 1999 params->enable_6ghz_passive = false; 2000 2001 if (params->scan_6ghz) 2002 return; 2003 2004 if (!fw_has_capa(&mvm->fw->ucode_capa, 2005 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 2006 IWL_DEBUG_SCAN(mvm, 2007 "6GHz passive scan: Not supported by FW\n"); 2008 return; 2009 } 2010 2011 /* 6GHz passive scan allowed only on station interface */ 2012 if (vif->type != NL80211_IFTYPE_STATION) { 2013 IWL_DEBUG_SCAN(mvm, 2014 "6GHz passive scan: not station interface\n"); 2015 return; 2016 } 2017 2018 /* 2019 * 6GHz passive scan is allowed in a defined time interval following HW 2020 * reset or resume flow, or while not associated and a large interval 2021 * has passed since the last 6GHz passive scan. 2022 */ 2023 if ((vif->cfg.assoc || 2024 time_after(mvm->last_6ghz_passive_scan_jiffies + 2025 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 2026 (time_before(mvm->last_reset_or_resume_time_jiffies + 2027 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 2028 jiffies))) { 2029 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 2030 vif->cfg.assoc ? "associated" : 2031 "timeout did not expire"); 2032 return; 2033 } 2034 2035 /* not enough channels in the regular scan request */ 2036 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 2037 IWL_DEBUG_SCAN(mvm, 2038 "6GHz passive scan: not enough channels\n"); 2039 return; 2040 } 2041 2042 for (i = 0; i < params->n_ssids; i++) { 2043 if (!params->ssids[i].ssid_len) 2044 break; 2045 } 2046 2047 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 2048 if (i == params->n_ssids) { 2049 IWL_DEBUG_SCAN(mvm, 2050 "6GHz passive scan: no wildcard SSID\n"); 2051 return; 2052 } 2053 2054 if (!sband || !sband->n_channels) { 2055 IWL_DEBUG_SCAN(mvm, 2056 "6GHz passive scan: no 6GHz channels\n"); 2057 return; 2058 } 2059 2060 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 2061 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 2062 n_disabled++; 2063 } 2064 2065 /* 2066 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 2067 * scan 2068 */ 2069 if (n_disabled != sband->n_channels) { 2070 IWL_DEBUG_SCAN(mvm, 2071 "6GHz passive scan: 6GHz channels enabled\n"); 2072 return; 2073 } 2074 2075 /* all conditions to enable 6ghz passive scan are satisfied */ 2076 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2077 params->enable_6ghz_passive = true; 2078 } 2079 2080 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2081 struct iwl_mvm_scan_params *params, 2082 struct ieee80211_vif *vif, 2083 int type) 2084 { 2085 u16 flags = 0; 2086 2087 /* 2088 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2089 * if there is a single SSID which is not the broadcast SSID, assume 2090 * that the scan is intended for roaming purposes and thus enable Rx on 2091 * all chains to improve chances of hearing the beacons/probe responses. 2092 */ 2093 if (params->n_ssids == 0) 2094 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2095 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2096 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2097 2098 if (iwl_mvm_is_scan_fragmented(params->type)) 2099 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2100 2101 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2102 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2103 2104 if (params->pass_all) 2105 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2106 else 2107 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2108 2109 if (!iwl_mvm_is_regular_scan(params)) 2110 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2111 2112 if (params->iter_notif || 2113 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2114 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2115 2116 if (IWL_MVM_ADWELL_ENABLE) 2117 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2118 2119 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2120 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2121 2122 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2123 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2124 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2125 2126 if (params->enable_6ghz_passive) 2127 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2128 2129 if (iwl_mvm_is_oce_supported(mvm) && 2130 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2131 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2132 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2133 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2134 2135 return flags; 2136 } 2137 2138 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2139 struct iwl_mvm_scan_params *params, 2140 struct ieee80211_vif *vif, int type, 2141 u16 gen_flags) 2142 { 2143 u8 flags = 0; 2144 2145 if (iwl_mvm_is_cdb_supported(mvm)) { 2146 if (params->respect_p2p_go) 2147 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2148 if (params->respect_p2p_go_hb) 2149 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2150 } else { 2151 if (params->respect_p2p_go) 2152 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2153 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2154 } 2155 2156 if (params->scan_6ghz && 2157 fw_has_capa(&mvm->fw->ucode_capa, 2158 IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT)) 2159 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT; 2160 2161 /* Passive and AP interface -> ACS (automatic channel selection) */ 2162 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE && 2163 ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP && 2164 iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 2165 0) >= 1) 2166 flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS; 2167 2168 return flags; 2169 } 2170 2171 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2172 struct iwl_mvm_scan_params *params, 2173 struct ieee80211_vif *vif) 2174 { 2175 u16 flags = 0; 2176 2177 if (params->n_ssids == 0) 2178 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2179 2180 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2181 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2182 2183 if (iwl_mvm_is_scan_fragmented(params->type)) 2184 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2185 2186 if (iwl_mvm_is_cdb_supported(mvm) && 2187 iwl_mvm_is_scan_fragmented(params->hb_type)) 2188 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2189 2190 if (iwl_mvm_rrm_scan_needed(mvm) && 2191 fw_has_capa(&mvm->fw->ucode_capa, 2192 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2193 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2194 2195 if (params->pass_all) 2196 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2197 else 2198 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2199 2200 if (!iwl_mvm_is_regular_scan(params)) 2201 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2202 2203 if (params->iter_notif) 2204 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2205 2206 #ifdef CONFIG_IWLWIFI_DEBUGFS 2207 if (mvm->scan_iter_notif_enabled) 2208 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2209 #endif 2210 2211 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2212 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2213 2214 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2215 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2216 2217 /* 2218 * Extended dwell is relevant only for low band to start with, as it is 2219 * being used for social channles only (1, 6, 11), so we can check 2220 * only scan type on low band also for CDB. 2221 */ 2222 if (iwl_mvm_is_regular_scan(params) && 2223 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2224 !iwl_mvm_is_scan_fragmented(params->type) && 2225 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2226 !iwl_mvm_is_oce_supported(mvm)) 2227 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2228 2229 if (iwl_mvm_is_oce_supported(mvm)) { 2230 if ((params->flags & 2231 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2232 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2233 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2234 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2235 * the same bit, we need to make sure that we use this bit here 2236 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2237 * used. */ 2238 if ((params->flags & 2239 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2240 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2241 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2242 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2243 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2244 } 2245 2246 return flags; 2247 } 2248 2249 static int 2250 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2251 struct iwl_scan_umac_schedule *schedule, 2252 __le16 *delay) 2253 { 2254 int i; 2255 if (WARN_ON(!params->n_scan_plans || 2256 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2257 return -EINVAL; 2258 2259 for (i = 0; i < params->n_scan_plans; i++) { 2260 struct cfg80211_sched_scan_plan *scan_plan = 2261 ¶ms->scan_plans[i]; 2262 2263 schedule[i].iter_count = scan_plan->iterations; 2264 schedule[i].interval = 2265 cpu_to_le16(scan_plan->interval); 2266 } 2267 2268 /* 2269 * If the number of iterations of the last scan plan is set to 2270 * zero, it should run infinitely. However, this is not always the case. 2271 * For example, when regular scan is requested the driver sets one scan 2272 * plan with one iteration. 2273 */ 2274 if (!schedule[params->n_scan_plans - 1].iter_count) 2275 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2276 2277 *delay = cpu_to_le16(params->delay); 2278 2279 return 0; 2280 } 2281 2282 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2283 struct iwl_mvm_scan_params *params, 2284 int type, int uid) 2285 { 2286 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2287 struct iwl_scan_umac_chan_param *chan_param; 2288 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2289 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2290 mvm->fw->ucode_capa.n_scan_channels; 2291 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2292 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2293 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2294 struct iwl_ssid_ie *direct_scan; 2295 int ret = 0; 2296 u32 ssid_bitmap = 0; 2297 u8 channel_flags = 0; 2298 u16 gen_flags; 2299 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2300 2301 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2302 2303 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2304 2305 cmd->uid = cpu_to_le32(uid); 2306 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2307 cmd->general_flags = cpu_to_le16(gen_flags); 2308 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2309 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2310 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2311 IWL_SCAN_NUM_OF_FRAGS; 2312 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2313 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2314 IWL_SCAN_NUM_OF_FRAGS; 2315 2316 cmd->v8.general_flags2 = 2317 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2318 } 2319 2320 cmd->scan_start_mac_id = scan_vif->id; 2321 2322 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2323 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2324 2325 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2326 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2327 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2328 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2329 2330 /* set fragmented ebs for fragmented scan on HB channels */ 2331 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2332 if (gen_flags & 2333 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2334 (!iwl_mvm_is_cdb_supported(mvm) && 2335 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2336 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2337 } 2338 } 2339 2340 chan_param->flags = channel_flags; 2341 chan_param->count = params->n_channels; 2342 2343 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2344 &tail_v2->delay); 2345 if (ret) 2346 return ret; 2347 2348 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2349 tail_v2->preq = params->preq; 2350 direct_scan = tail_v2->direct_scan; 2351 } else { 2352 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2353 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2354 ¶ms->preq); 2355 direct_scan = tail_v1->direct_scan; 2356 } 2357 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2358 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2359 params->n_channels, ssid_bitmap, 2360 cmd_data); 2361 return 0; 2362 } 2363 2364 static void 2365 iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm, 2366 struct iwl_mvm_scan_params *params, 2367 struct ieee80211_vif *vif, 2368 struct iwl_scan_general_params_v11 *gp, 2369 u16 gen_flags, u8 gen_flags2, 2370 u32 version) 2371 { 2372 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2373 2374 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2375 2376 IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n", 2377 gen_flags, gen_flags2); 2378 2379 gp->flags = cpu_to_le16(gen_flags); 2380 gp->flags2 = gen_flags2; 2381 2382 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2383 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2384 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2385 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2386 2387 mvm->scan_link_id = 0; 2388 2389 if (version < 16) { 2390 gp->scan_start_mac_or_link_id = scan_vif->id; 2391 } else { 2392 struct iwl_mvm_vif_link_info *link_info = 2393 scan_vif->link[params->tsf_report_link_id]; 2394 2395 mvm->scan_link_id = params->tsf_report_link_id; 2396 if (!WARN_ON(!link_info)) 2397 gp->scan_start_mac_or_link_id = link_info->fw_link_id; 2398 } 2399 } 2400 2401 static void 2402 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2403 struct iwl_scan_probe_params_v3 *pp) 2404 { 2405 pp->preq = params->preq; 2406 pp->ssid_num = params->n_ssids; 2407 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2408 } 2409 2410 static void 2411 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2412 struct iwl_scan_probe_params_v4 *pp, 2413 u32 *bitmap_ssid) 2414 { 2415 pp->preq = params->preq; 2416 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2417 } 2418 2419 static void 2420 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2421 struct iwl_mvm_scan_params *params, 2422 struct ieee80211_vif *vif, 2423 struct iwl_scan_channel_params_v4 *cp, 2424 u32 channel_cfg_flags) 2425 { 2426 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2427 cp->count = params->n_channels; 2428 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2429 2430 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2431 params->n_channels, 2432 channel_cfg_flags, 2433 vif->type); 2434 } 2435 2436 static void 2437 iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm, 2438 struct iwl_mvm_scan_params *params, 2439 struct ieee80211_vif *vif, 2440 struct iwl_scan_channel_params_v7 *cp, 2441 u32 channel_cfg_flags, 2442 u32 version) 2443 { 2444 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2445 cp->count = params->n_channels; 2446 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2447 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2448 2449 iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp, 2450 params->n_channels, 2451 channel_cfg_flags, 2452 vif->type, version); 2453 2454 if (params->enable_6ghz_passive) { 2455 struct ieee80211_supported_band *sband = 2456 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2457 u32 i; 2458 2459 for (i = 0; i < sband->n_channels; i++) { 2460 struct ieee80211_channel *channel = 2461 &sband->channels[i]; 2462 2463 struct iwl_scan_channel_cfg_umac *cfg = 2464 &cp->channel_config[cp->count]; 2465 2466 if (!cfg80211_channel_is_psc(channel)) 2467 continue; 2468 2469 cfg->v5.channel_num = channel->hw_value; 2470 cfg->v5.iter_count = 1; 2471 cfg->v5.iter_interval = 0; 2472 2473 if (version < 17) { 2474 cfg->flags = 0; 2475 cfg->v2.band = PHY_BAND_6; 2476 } else { 2477 cfg->flags = cpu_to_le32(PHY_BAND_6 << 2478 IWL_CHAN_CFG_FLAGS_BAND_POS); 2479 cfg->v5.psd_20 = 2480 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 2481 } 2482 cp->count++; 2483 } 2484 } 2485 } 2486 2487 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2488 struct iwl_mvm_scan_params *params, int type, 2489 int uid) 2490 { 2491 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2492 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2493 int ret; 2494 u16 gen_flags; 2495 2496 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2497 cmd->uid = cpu_to_le32(uid); 2498 2499 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2500 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2501 &scan_p->general_params, 2502 gen_flags, 0, 12); 2503 2504 ret = iwl_mvm_fill_scan_sched_params(params, 2505 scan_p->periodic_params.schedule, 2506 &scan_p->periodic_params.delay); 2507 if (ret) 2508 return ret; 2509 2510 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2511 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2512 &scan_p->channel_params, 0); 2513 2514 return 0; 2515 } 2516 2517 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2518 struct ieee80211_vif *vif, 2519 struct iwl_mvm_scan_params *params, 2520 int type, int uid, u32 version) 2521 { 2522 struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd; 2523 struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params; 2524 struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params; 2525 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2526 int ret; 2527 u16 gen_flags; 2528 u8 gen_flags2; 2529 u32 bitmap_ssid = 0; 2530 2531 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2532 cmd->uid = cpu_to_le32(uid); 2533 2534 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2535 2536 if (version >= 15) 2537 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type, 2538 gen_flags); 2539 else 2540 gen_flags2 = 0; 2541 2542 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2543 &scan_p->general_params, 2544 gen_flags, gen_flags2, version); 2545 2546 ret = iwl_mvm_fill_scan_sched_params(params, 2547 scan_p->periodic_params.schedule, 2548 &scan_p->periodic_params.delay); 2549 if (ret) 2550 return ret; 2551 2552 if (!params->scan_6ghz) { 2553 iwl_mvm_scan_umac_fill_probe_p_v4(params, 2554 &scan_p->probe_params, 2555 &bitmap_ssid); 2556 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif, 2557 &scan_p->channel_params, 2558 bitmap_ssid, 2559 version); 2560 return 0; 2561 } else { 2562 pb->preq = params->preq; 2563 } 2564 2565 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2566 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2567 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2568 2569 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2570 2571 cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params, 2572 params->n_channels, 2573 pb, cp, vif->type, 2574 version); 2575 if (!cp->count) 2576 return -EINVAL; 2577 2578 if (!params->n_ssids || 2579 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2580 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2581 2582 return 0; 2583 } 2584 2585 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2586 struct iwl_mvm_scan_params *params, int type, 2587 int uid) 2588 { 2589 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2590 } 2591 2592 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2593 struct iwl_mvm_scan_params *params, int type, 2594 int uid) 2595 { 2596 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2597 } 2598 2599 static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2600 struct iwl_mvm_scan_params *params, int type, 2601 int uid) 2602 { 2603 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16); 2604 } 2605 2606 static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2607 struct iwl_mvm_scan_params *params, int type, 2608 int uid) 2609 { 2610 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17); 2611 } 2612 2613 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2614 { 2615 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2616 } 2617 2618 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2619 { 2620 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2621 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2622 2623 /* This looks a bit arbitrary, but the idea is that if we run 2624 * out of possible simultaneous scans and the userspace is 2625 * trying to run a scan type that is already running, we 2626 * return -EBUSY. But if the userspace wants to start a 2627 * different type of scan, we stop the opposite type to make 2628 * space for the new request. The reason is backwards 2629 * compatibility with old wpa_supplicant that wouldn't stop a 2630 * scheduled scan before starting a normal scan. 2631 */ 2632 2633 /* FW supports only a single periodic scan */ 2634 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2635 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2636 return -EBUSY; 2637 2638 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2639 return 0; 2640 2641 /* Use a switch, even though this is a bitmask, so that more 2642 * than one bits set will fall in default and we will warn. 2643 */ 2644 switch (type) { 2645 case IWL_MVM_SCAN_REGULAR: 2646 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2647 return -EBUSY; 2648 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2649 case IWL_MVM_SCAN_SCHED: 2650 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2651 return -EBUSY; 2652 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2653 case IWL_MVM_SCAN_NETDETECT: 2654 /* For non-unified images, there's no need to stop 2655 * anything for net-detect since the firmware is 2656 * restarted anyway. This way, any sched scans that 2657 * were running will be restarted when we resume. 2658 */ 2659 if (!unified_image) 2660 return 0; 2661 2662 /* If this is a unified image and we ran out of scans, 2663 * we need to stop something. Prefer stopping regular 2664 * scans, because the results are useless at this 2665 * point, and we should be able to keep running 2666 * another scheduled scan while suspended. 2667 */ 2668 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2669 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2670 true); 2671 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2672 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2673 true); 2674 /* Something is wrong if no scan was running but we 2675 * ran out of scans. 2676 */ 2677 fallthrough; 2678 default: 2679 WARN_ON(1); 2680 break; 2681 } 2682 2683 return -EIO; 2684 } 2685 2686 #define SCAN_TIMEOUT 30000 2687 2688 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2689 { 2690 struct delayed_work *delayed_work = to_delayed_work(work); 2691 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2692 scan_timeout_dwork); 2693 2694 IWL_ERR(mvm, "regular scan timed out\n"); 2695 2696 iwl_force_nmi(mvm->trans); 2697 } 2698 2699 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2700 struct iwl_mvm_scan_params *params, 2701 struct ieee80211_vif *vif) 2702 { 2703 if (iwl_mvm_is_cdb_supported(mvm)) { 2704 params->type = 2705 iwl_mvm_get_scan_type_band(mvm, vif, 2706 NL80211_BAND_2GHZ); 2707 params->hb_type = 2708 iwl_mvm_get_scan_type_band(mvm, vif, 2709 NL80211_BAND_5GHZ); 2710 } else { 2711 params->type = iwl_mvm_get_scan_type(mvm, vif); 2712 } 2713 } 2714 2715 struct iwl_scan_umac_handler { 2716 u8 version; 2717 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2718 struct iwl_mvm_scan_params *params, int type, int uid); 2719 }; 2720 2721 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2722 .version = _ver, \ 2723 .handler = iwl_mvm_scan_umac_v##_ver, \ 2724 } 2725 2726 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2727 /* set the newest version first to shorten the list traverse time */ 2728 IWL_SCAN_UMAC_HANDLER(17), 2729 IWL_SCAN_UMAC_HANDLER(16), 2730 IWL_SCAN_UMAC_HANDLER(15), 2731 IWL_SCAN_UMAC_HANDLER(14), 2732 IWL_SCAN_UMAC_HANDLER(12), 2733 }; 2734 2735 static void iwl_mvm_mei_scan_work(struct work_struct *wk) 2736 { 2737 struct iwl_mei_scan_filter *scan_filter = 2738 container_of(wk, struct iwl_mei_scan_filter, scan_work); 2739 struct iwl_mvm *mvm = 2740 container_of(scan_filter, struct iwl_mvm, mei_scan_filter); 2741 struct iwl_mvm_csme_conn_info *info; 2742 struct sk_buff *skb; 2743 u8 bssid[ETH_ALEN]; 2744 2745 mutex_lock(&mvm->mutex); 2746 info = iwl_mvm_get_csme_conn_info(mvm); 2747 memcpy(bssid, info->conn_info.bssid, ETH_ALEN); 2748 mutex_unlock(&mvm->mutex); 2749 2750 while ((skb = skb_dequeue(&scan_filter->scan_res))) { 2751 struct ieee80211_mgmt *mgmt = (void *)skb->data; 2752 2753 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) 2754 ieee80211_rx_irqsafe(mvm->hw, skb); 2755 else 2756 kfree_skb(skb); 2757 } 2758 } 2759 2760 void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) 2761 { 2762 skb_queue_head_init(&mei_scan_filter->scan_res); 2763 INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); 2764 } 2765 2766 /* In case CSME is connected and has link protection set, this function will 2767 * override the scan request to scan only the associated channel and only for 2768 * the associated SSID. 2769 */ 2770 static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, 2771 struct iwl_mvm_scan_params *params) 2772 { 2773 struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); 2774 struct iwl_mei_conn_info *conn_info; 2775 struct ieee80211_channel *chan; 2776 int scan_iters, i; 2777 2778 if (!info) { 2779 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); 2780 return; 2781 } 2782 2783 conn_info = &info->conn_info; 2784 if (!info->conn_info.lp_state || !info->conn_info.ssid_len) 2785 return; 2786 2787 if (!params->n_channels || !params->n_ssids) 2788 return; 2789 2790 mvm->mei_scan_filter.is_mei_limited_scan = true; 2791 2792 chan = ieee80211_get_channel(mvm->hw->wiphy, 2793 ieee80211_channel_to_frequency(conn_info->channel, 2794 conn_info->band)); 2795 if (!chan) { 2796 IWL_DEBUG_SCAN(mvm, 2797 "Failed to get CSME channel (chan=%u band=%u)\n", 2798 conn_info->channel, conn_info->band); 2799 return; 2800 } 2801 2802 /* The mei filtered scan must find the AP, otherwise CSME will 2803 * take the NIC ownership. Add several iterations on the channel to 2804 * make the scan more robust. 2805 */ 2806 scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); 2807 params->n_channels = scan_iters; 2808 for (i = 0; i < scan_iters; i++) 2809 params->channels[i] = chan; 2810 2811 IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); 2812 2813 params->n_ssids = 1; 2814 params->ssids[0].ssid_len = conn_info->ssid_len; 2815 memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); 2816 } 2817 2818 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2819 struct ieee80211_vif *vif, 2820 struct iwl_host_cmd *hcmd, 2821 struct iwl_mvm_scan_params *params, 2822 int type) 2823 { 2824 int uid, i, err; 2825 u8 scan_ver; 2826 2827 lockdep_assert_held(&mvm->mutex); 2828 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); 2829 2830 iwl_mvm_mei_limited_scan(mvm, params); 2831 2832 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2833 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2834 2835 return iwl_mvm_scan_lmac(mvm, vif, params); 2836 } 2837 2838 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2839 if (uid < 0) 2840 return uid; 2841 2842 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2843 2844 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2845 IWL_FW_CMD_VER_UNKNOWN); 2846 2847 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2848 const struct iwl_scan_umac_handler *ver_handler = 2849 &iwl_scan_umac_handlers[i]; 2850 2851 if (ver_handler->version != scan_ver) 2852 continue; 2853 2854 err = ver_handler->handler(mvm, vif, params, type, uid); 2855 return err ? : uid; 2856 } 2857 2858 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2859 if (err) 2860 return err; 2861 2862 return uid; 2863 } 2864 2865 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2866 struct ieee80211_vif *current_vif; 2867 bool p2p_go; 2868 enum nl80211_band band; 2869 }; 2870 2871 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2872 struct ieee80211_vif *vif) 2873 { 2874 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2875 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2876 2877 /* exclude the given vif */ 2878 if (vif == data->current_vif) 2879 return; 2880 2881 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) { 2882 u32 link_id; 2883 2884 for (link_id = 0; 2885 link_id < ARRAY_SIZE(mvmvif->link); 2886 link_id++) { 2887 struct iwl_mvm_vif_link_info *link = 2888 mvmvif->link[link_id]; 2889 2890 if (link && link->phy_ctxt->id < NUM_PHY_CTX && 2891 (data->band == NUM_NL80211_BANDS || 2892 link->phy_ctxt->channel->band == data->band)) { 2893 data->p2p_go = true; 2894 break; 2895 } 2896 } 2897 } 2898 } 2899 2900 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2901 struct ieee80211_vif *vif, 2902 bool low_latency, 2903 enum nl80211_band band) 2904 { 2905 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2906 .current_vif = vif, 2907 .p2p_go = false, 2908 .band = band, 2909 }; 2910 2911 if (!low_latency) 2912 return false; 2913 2914 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2915 IEEE80211_IFACE_ITER_NORMAL, 2916 iwl_mvm_scan_respect_p2p_go_iter, 2917 &data); 2918 2919 return data.p2p_go; 2920 } 2921 2922 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2923 struct ieee80211_vif *vif, 2924 enum nl80211_band band) 2925 { 2926 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2927 2928 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2929 } 2930 2931 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2932 struct ieee80211_vif *vif) 2933 { 2934 bool low_latency = iwl_mvm_low_latency(mvm); 2935 2936 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2937 NUM_NL80211_BANDS); 2938 } 2939 2940 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2941 struct iwl_mvm_scan_params *params, 2942 struct ieee80211_vif *vif) 2943 { 2944 if (iwl_mvm_is_cdb_supported(mvm)) { 2945 params->respect_p2p_go = 2946 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2947 NL80211_BAND_2GHZ); 2948 params->respect_p2p_go_hb = 2949 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2950 NL80211_BAND_5GHZ); 2951 } else { 2952 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2953 } 2954 } 2955 2956 static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm, 2957 struct ieee80211_vif *vif, 2958 struct cfg80211_scan_request *req, 2959 struct ieee80211_scan_ies *ies, 2960 int type) 2961 { 2962 struct iwl_host_cmd hcmd = { 2963 .len = { iwl_mvm_scan_size(mvm), }, 2964 .data = { mvm->scan_cmd, }, 2965 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2966 }; 2967 struct iwl_mvm_scan_params params = {}; 2968 int ret, uid; 2969 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2970 2971 lockdep_assert_held(&mvm->mutex); 2972 2973 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2974 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2975 return -EBUSY; 2976 } 2977 2978 ret = iwl_mvm_check_running_scans(mvm, type); 2979 if (ret) 2980 return ret; 2981 2982 /* we should have failed registration if scan_cmd was NULL */ 2983 if (WARN_ON(!mvm->scan_cmd)) 2984 return -ENOMEM; 2985 2986 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2987 return -ENOBUFS; 2988 2989 params.n_ssids = req->n_ssids; 2990 params.flags = req->flags; 2991 params.n_channels = req->n_channels; 2992 params.delay = 0; 2993 params.ssids = req->ssids; 2994 params.channels = req->channels; 2995 params.mac_addr = req->mac_addr; 2996 params.mac_addr_mask = req->mac_addr_mask; 2997 params.no_cck = req->no_cck; 2998 params.pass_all = true; 2999 params.n_match_sets = 0; 3000 params.match_sets = NULL; 3001 ether_addr_copy(params.bssid, req->bssid); 3002 3003 params.scan_plans = &scan_plan; 3004 params.n_scan_plans = 1; 3005 3006 params.n_6ghz_params = req->n_6ghz_params; 3007 params.scan_6ghz_params = req->scan_6ghz_params; 3008 params.scan_6ghz = req->scan_6ghz; 3009 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3010 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3011 3012 if (req->duration) 3013 params.iter_notif = true; 3014 3015 params.tsf_report_link_id = req->tsf_report_link_id; 3016 if (params.tsf_report_link_id < 0) { 3017 if (vif->active_links) 3018 params.tsf_report_link_id = __ffs(vif->active_links); 3019 else 3020 params.tsf_report_link_id = 0; 3021 } 3022 3023 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3024 3025 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 3026 3027 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3028 3029 if (uid < 0) 3030 return uid; 3031 3032 iwl_mvm_pause_tcm(mvm, false); 3033 3034 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3035 if (ret) { 3036 /* If the scan failed, it usually means that the FW was unable 3037 * to allocate the time events. Warn on it, but maybe we 3038 * should try to send the command again with different params. 3039 */ 3040 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 3041 iwl_mvm_resume_tcm(mvm); 3042 return ret; 3043 } 3044 3045 IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n", 3046 type, uid); 3047 3048 mvm->scan_uid_status[uid] = type; 3049 mvm->scan_status |= type; 3050 3051 if (type == IWL_MVM_SCAN_REGULAR) { 3052 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 3053 schedule_delayed_work(&mvm->scan_timeout_dwork, 3054 msecs_to_jiffies(SCAN_TIMEOUT)); 3055 } 3056 3057 if (params.enable_6ghz_passive) 3058 mvm->last_6ghz_passive_scan_jiffies = jiffies; 3059 3060 return 0; 3061 } 3062 3063 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3064 struct cfg80211_scan_request *req, 3065 struct ieee80211_scan_ies *ies) 3066 { 3067 return _iwl_mvm_single_scan_start(mvm, vif, req, ies, 3068 IWL_MVM_SCAN_REGULAR); 3069 } 3070 3071 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 3072 struct ieee80211_vif *vif, 3073 struct cfg80211_sched_scan_request *req, 3074 struct ieee80211_scan_ies *ies, 3075 int type) 3076 { 3077 struct iwl_host_cmd hcmd = { 3078 .len = { iwl_mvm_scan_size(mvm), }, 3079 .data = { mvm->scan_cmd, }, 3080 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 3081 }; 3082 struct iwl_mvm_scan_params params = {}; 3083 int ret, uid; 3084 int i, j; 3085 bool non_psc_included = false; 3086 3087 lockdep_assert_held(&mvm->mutex); 3088 3089 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 3090 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 3091 return -EBUSY; 3092 } 3093 3094 ret = iwl_mvm_check_running_scans(mvm, type); 3095 if (ret) 3096 return ret; 3097 3098 /* we should have failed registration if scan_cmd was NULL */ 3099 if (WARN_ON(!mvm->scan_cmd)) 3100 return -ENOMEM; 3101 3102 3103 params.n_ssids = req->n_ssids; 3104 params.flags = req->flags; 3105 params.n_channels = req->n_channels; 3106 params.ssids = req->ssids; 3107 params.channels = req->channels; 3108 params.mac_addr = req->mac_addr; 3109 params.mac_addr_mask = req->mac_addr_mask; 3110 params.no_cck = false; 3111 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 3112 params.n_match_sets = req->n_match_sets; 3113 params.match_sets = req->match_sets; 3114 eth_broadcast_addr(params.bssid); 3115 if (!req->n_scan_plans) 3116 return -EINVAL; 3117 3118 params.n_scan_plans = req->n_scan_plans; 3119 params.scan_plans = req->scan_plans; 3120 3121 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3122 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3123 3124 /* In theory, LMAC scans can handle a 32-bit delay, but since 3125 * waiting for over 18 hours to start the scan is a bit silly 3126 * and to keep it aligned with UMAC scans (which only support 3127 * 16-bit delays), trim it down to 16-bits. 3128 */ 3129 if (req->delay > U16_MAX) { 3130 IWL_DEBUG_SCAN(mvm, 3131 "delay value is > 16-bits, set to max possible\n"); 3132 params.delay = U16_MAX; 3133 } else { 3134 params.delay = req->delay; 3135 } 3136 3137 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 3138 if (ret) 3139 return ret; 3140 3141 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3142 3143 /* for 6 GHZ band only PSC channels need to be added */ 3144 for (i = 0; i < params.n_channels; i++) { 3145 struct ieee80211_channel *channel = params.channels[i]; 3146 3147 if (channel->band == NL80211_BAND_6GHZ && 3148 !cfg80211_channel_is_psc(channel)) { 3149 non_psc_included = true; 3150 break; 3151 } 3152 } 3153 3154 if (non_psc_included) { 3155 params.channels = kmemdup(params.channels, 3156 sizeof(params.channels[0]) * 3157 params.n_channels, 3158 GFP_KERNEL); 3159 if (!params.channels) 3160 return -ENOMEM; 3161 3162 for (i = j = 0; i < params.n_channels; i++) { 3163 if (params.channels[i]->band == NL80211_BAND_6GHZ && 3164 !cfg80211_channel_is_psc(params.channels[i])) 3165 continue; 3166 params.channels[j++] = params.channels[i]; 3167 } 3168 params.n_channels = j; 3169 } 3170 3171 if (non_psc_included && 3172 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 3173 kfree(params.channels); 3174 return -ENOBUFS; 3175 } 3176 3177 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3178 3179 if (non_psc_included) 3180 kfree(params.channels); 3181 if (uid < 0) 3182 return uid; 3183 3184 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3185 if (!ret) { 3186 IWL_DEBUG_SCAN(mvm, 3187 "Sched scan request send success: type=%u, uid=%u\n", 3188 type, uid); 3189 mvm->scan_uid_status[uid] = type; 3190 mvm->scan_status |= type; 3191 } else { 3192 /* If the scan failed, it usually means that the FW was unable 3193 * to allocate the time events. Warn on it, but maybe we 3194 * should try to send the command again with different params. 3195 */ 3196 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 3197 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3198 } 3199 3200 return ret; 3201 } 3202 3203 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 3204 struct iwl_rx_cmd_buffer *rxb) 3205 { 3206 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3207 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 3208 u32 uid = __le32_to_cpu(notif->uid); 3209 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 3210 bool select_links = false; 3211 3212 mvm->mei_scan_filter.is_mei_limited_scan = false; 3213 3214 IWL_DEBUG_SCAN(mvm, 3215 "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n", 3216 uid, mvm->scan_uid_status[uid], 3217 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3218 "completed" : "aborted", 3219 iwl_mvm_ebs_status_str(notif->ebs_status)); 3220 3221 IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n", 3222 mvm->scan_status); 3223 3224 IWL_DEBUG_SCAN(mvm, 3225 "Scan completed: line=%u, iter=%u, elapsed time=%u\n", 3226 notif->last_schedule, notif->last_iter, 3227 __le32_to_cpu(notif->time_from_last_iter)); 3228 3229 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 3230 return; 3231 3232 /* if the scan is already stopping, we don't need to notify mac80211 */ 3233 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 3234 struct cfg80211_scan_info info = { 3235 .aborted = aborted, 3236 .scan_start_tsf = mvm->scan_start, 3237 }; 3238 struct iwl_mvm_vif *scan_vif = mvm->scan_vif; 3239 struct iwl_mvm_vif_link_info *link_info = 3240 scan_vif->link[mvm->scan_link_id]; 3241 3242 /* It is possible that by the time the scan is complete the link 3243 * was already removed and is not valid. 3244 */ 3245 if (link_info) 3246 memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN); 3247 else 3248 IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n"); 3249 3250 ieee80211_scan_completed(mvm->hw, &info); 3251 mvm->scan_vif = NULL; 3252 cancel_delayed_work(&mvm->scan_timeout_dwork); 3253 iwl_mvm_resume_tcm(mvm); 3254 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 3255 ieee80211_sched_scan_stopped(mvm->hw); 3256 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3257 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) { 3258 IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n"); 3259 /* 3260 * Other scan types won't necessarily scan for the MLD links channels. 3261 * Therefore, only select links after successful internal scan. 3262 */ 3263 select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED; 3264 } 3265 3266 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 3267 3268 IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n", 3269 mvm->scan_status); 3270 3271 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3272 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3273 mvm->last_ebs_successful = false; 3274 3275 mvm->scan_uid_status[uid] = 0; 3276 3277 if (select_links) 3278 wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk); 3279 } 3280 3281 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3282 struct iwl_rx_cmd_buffer *rxb) 3283 { 3284 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3285 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3286 3287 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3288 3289 IWL_DEBUG_SCAN(mvm, 3290 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3291 notif->status, notif->scanned_channels); 3292 3293 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3294 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3295 ieee80211_sched_scan_results(mvm->hw); 3296 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3297 } 3298 3299 IWL_DEBUG_SCAN(mvm, 3300 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3301 mvm->scan_start); 3302 } 3303 3304 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 3305 { 3306 struct iwl_umac_scan_abort cmd = {}; 3307 int uid, ret; 3308 3309 lockdep_assert_held(&mvm->mutex); 3310 3311 /* We should always get a valid index here, because we already 3312 * checked that this type of scan was running in the generic 3313 * code. 3314 */ 3315 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3316 if (WARN_ON_ONCE(uid < 0)) 3317 return uid; 3318 3319 cmd.uid = cpu_to_le32(uid); 3320 3321 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3322 3323 ret = iwl_mvm_send_cmd_pdu(mvm, 3324 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3325 CMD_SEND_IN_RFKILL, sizeof(cmd), &cmd); 3326 if (!ret) 3327 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3328 3329 IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d\n", ret); 3330 return ret; 3331 } 3332 3333 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3334 { 3335 struct iwl_notification_wait wait_scan_done; 3336 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3337 SCAN_OFFLOAD_COMPLETE, }; 3338 int ret; 3339 3340 lockdep_assert_held(&mvm->mutex); 3341 3342 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3343 scan_done_notif, 3344 ARRAY_SIZE(scan_done_notif), 3345 NULL, NULL); 3346 3347 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3348 3349 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3350 ret = iwl_mvm_umac_scan_abort(mvm, type); 3351 else 3352 ret = iwl_mvm_lmac_scan_abort(mvm); 3353 3354 if (ret) { 3355 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3356 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3357 return ret; 3358 } 3359 3360 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3361 1 * HZ); 3362 } 3363 3364 static size_t iwl_scan_req_umac_get_size(u8 scan_ver) 3365 { 3366 switch (scan_ver) { 3367 case 12: 3368 return sizeof(struct iwl_scan_req_umac_v12); 3369 case 14: 3370 case 15: 3371 case 16: 3372 case 17: 3373 return sizeof(struct iwl_scan_req_umac_v17); 3374 } 3375 3376 return 0; 3377 } 3378 3379 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) 3380 { 3381 int base_size, tail_size; 3382 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3383 IWL_FW_CMD_VER_UNKNOWN); 3384 3385 base_size = iwl_scan_req_umac_get_size(scan_ver); 3386 if (base_size) 3387 return base_size; 3388 3389 3390 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3391 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3392 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3393 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3394 else if (iwl_mvm_cdb_scan_api(mvm)) 3395 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3396 else 3397 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3398 3399 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3400 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3401 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3402 else 3403 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3404 3405 return base_size + 3406 sizeof(struct iwl_scan_channel_cfg_umac) * 3407 mvm->fw->ucode_capa.n_scan_channels + 3408 tail_size; 3409 } 3410 return sizeof(struct iwl_scan_req_lmac) + 3411 sizeof(struct iwl_scan_channel_cfg_lmac) * 3412 mvm->fw->ucode_capa.n_scan_channels + 3413 sizeof(struct iwl_scan_probe_req_v1); 3414 } 3415 3416 /* 3417 * This function is used in nic restart flow, to inform mac80211 about scans 3418 * that was aborted by restart flow or by an assert. 3419 */ 3420 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3421 { 3422 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3423 int uid, i; 3424 3425 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3426 if (uid >= 0) { 3427 struct cfg80211_scan_info info = { 3428 .aborted = true, 3429 }; 3430 3431 cancel_delayed_work(&mvm->scan_timeout_dwork); 3432 3433 ieee80211_scan_completed(mvm->hw, &info); 3434 mvm->scan_uid_status[uid] = 0; 3435 } 3436 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3437 if (uid >= 0) { 3438 /* Sched scan will be restarted by mac80211 in 3439 * restart_hw, so do not report if FW is about to be 3440 * restarted. 3441 */ 3442 if (!mvm->fw_restart) 3443 ieee80211_sched_scan_stopped(mvm->hw); 3444 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3445 mvm->scan_uid_status[uid] = 0; 3446 } 3447 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO); 3448 if (uid >= 0) { 3449 IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n"); 3450 mvm->scan_uid_status[uid] = 0; 3451 } 3452 3453 uid = iwl_mvm_scan_uid_by_status(mvm, 3454 IWL_MVM_SCAN_STOPPING_REGULAR); 3455 if (uid >= 0) 3456 mvm->scan_uid_status[uid] = 0; 3457 3458 uid = iwl_mvm_scan_uid_by_status(mvm, 3459 IWL_MVM_SCAN_STOPPING_SCHED); 3460 if (uid >= 0) 3461 mvm->scan_uid_status[uid] = 0; 3462 3463 uid = iwl_mvm_scan_uid_by_status(mvm, 3464 IWL_MVM_SCAN_STOPPING_INT_MLO); 3465 if (uid >= 0) 3466 mvm->scan_uid_status[uid] = 0; 3467 3468 /* We shouldn't have any UIDs still set. Loop over all the 3469 * UIDs to make sure there's nothing left there and warn if 3470 * any is found. 3471 */ 3472 for (i = 0; i < mvm->max_scans; i++) { 3473 if (WARN_ONCE(mvm->scan_uid_status[i], 3474 "UMAC scan UID %d status was not cleaned\n", 3475 i)) 3476 mvm->scan_uid_status[i] = 0; 3477 } 3478 } else { 3479 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3480 struct cfg80211_scan_info info = { 3481 .aborted = true, 3482 }; 3483 3484 cancel_delayed_work(&mvm->scan_timeout_dwork); 3485 ieee80211_scan_completed(mvm->hw, &info); 3486 } 3487 3488 /* Sched scan will be restarted by mac80211 in 3489 * restart_hw, so do not report if FW is about to be 3490 * restarted. 3491 */ 3492 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3493 !mvm->fw_restart) { 3494 ieee80211_sched_scan_stopped(mvm->hw); 3495 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3496 } 3497 } 3498 } 3499 3500 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3501 { 3502 int ret; 3503 3504 IWL_DEBUG_SCAN(mvm, 3505 "Request to stop scan: type=0x%x, status=0x%x\n", 3506 type, mvm->scan_status); 3507 3508 if (!(mvm->scan_status & type)) 3509 return 0; 3510 3511 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 3512 ret = 0; 3513 goto out; 3514 } 3515 3516 ret = iwl_mvm_scan_stop_wait(mvm, type); 3517 if (!ret) 3518 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3519 else 3520 IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n"); 3521 3522 out: 3523 /* Clear the scan status so the next scan requests will 3524 * succeed and mark the scan as stopping, so that the Rx 3525 * handler doesn't do anything, as the scan was stopped from 3526 * above. 3527 */ 3528 mvm->scan_status &= ~type; 3529 3530 if (type == IWL_MVM_SCAN_REGULAR) { 3531 cancel_delayed_work(&mvm->scan_timeout_dwork); 3532 if (notify) { 3533 struct cfg80211_scan_info info = { 3534 .aborted = true, 3535 }; 3536 3537 ieee80211_scan_completed(mvm->hw, &info); 3538 } 3539 } else if (notify) { 3540 ieee80211_sched_scan_stopped(mvm->hw); 3541 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3542 } 3543 3544 return ret; 3545 } 3546 3547 static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm, 3548 struct ieee80211_vif *vif, 3549 struct ieee80211_channel **channels, 3550 size_t n_channels) 3551 { 3552 struct cfg80211_scan_request *req = NULL; 3553 struct ieee80211_scan_ies ies = {}; 3554 size_t size, i; 3555 int ret; 3556 3557 lockdep_assert_held(&mvm->mutex); 3558 3559 IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n", 3560 n_channels); 3561 3562 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 3563 return -EINVAL; 3564 3565 size = struct_size(req, channels, n_channels); 3566 req = kzalloc(size, GFP_KERNEL); 3567 if (!req) 3568 return -ENOMEM; 3569 3570 /* set the requested channels */ 3571 for (i = 0; i < n_channels; i++) 3572 req->channels[i] = channels[i]; 3573 3574 req->n_channels = n_channels; 3575 3576 /* set the rates */ 3577 for (i = 0; i < NUM_NL80211_BANDS; i++) 3578 if (mvm->hw->wiphy->bands[i]) 3579 req->rates[i] = 3580 (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1; 3581 3582 req->wdev = ieee80211_vif_to_wdev(vif); 3583 req->wiphy = mvm->hw->wiphy; 3584 req->scan_start = jiffies; 3585 req->tsf_report_link_id = -1; 3586 3587 ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies, 3588 IWL_MVM_SCAN_INT_MLO); 3589 kfree(req); 3590 3591 IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret); 3592 return ret; 3593 } 3594 3595 int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3596 { 3597 struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS]; 3598 unsigned long usable_links = ieee80211_vif_usable_links(vif); 3599 size_t n_channels = 0; 3600 u8 link_id; 3601 3602 lockdep_assert_held(&mvm->mutex); 3603 3604 if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) { 3605 IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n"); 3606 return -EBUSY; 3607 } 3608 3609 rcu_read_lock(); 3610 3611 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 3612 struct ieee80211_bss_conf *link_conf = 3613 rcu_dereference(vif->link_conf[link_id]); 3614 3615 if (WARN_ON_ONCE(!link_conf)) 3616 continue; 3617 3618 channels[n_channels++] = link_conf->chanreq.oper.chan; 3619 } 3620 3621 rcu_read_unlock(); 3622 3623 if (!n_channels) 3624 return -EINVAL; 3625 3626 return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels); 3627 } 3628 3629 static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm, 3630 enum nl80211_band band, 3631 u16 phy_chan_num) 3632 { 3633 struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band]; 3634 int chan_idx; 3635 3636 if (WARN_ON_ONCE(!sband)) 3637 return -EINVAL; 3638 3639 for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) { 3640 struct ieee80211_channel *channel = &sband->channels[chan_idx]; 3641 3642 if (channel->hw_value == phy_chan_num) 3643 return chan_idx; 3644 } 3645 3646 return -EINVAL; 3647 } 3648 3649 static u32 iwl_mvm_div_by_db(u32 value, u8 db) 3650 { 3651 /* 3652 * 2^32 * 10**(i / 10) for i = [1, 10], skipping 0 and simply stopping 3653 * at 10 dB and looping instead of using a much larger table. 3654 * 3655 * Using 64 bit math is overkill, but means the helper does not require 3656 * a limit on the input range. 3657 */ 3658 static const u32 db_to_val[] = { 3659 0xcb59185e, 0xa1866ba8, 0x804dce7a, 0x65ea59fe, 0x50f44d89, 3660 0x404de61f, 0x331426af, 0x2892c18b, 0x203a7e5b, 0x1999999a, 3661 }; 3662 3663 while (value && db > 0) { 3664 u8 change = min_t(u8, db, ARRAY_SIZE(db_to_val)); 3665 3666 value = (((u64)value) * db_to_val[change - 1]) >> 32; 3667 3668 db -= change; 3669 } 3670 3671 return value; 3672 } 3673 3674 VISIBLE_IF_IWLWIFI_KUNIT s8 3675 iwl_mvm_average_dbm_values(const struct iwl_umac_scan_channel_survey_notif *notif) 3676 { 3677 s8 average_magnitude; 3678 u32 average_factor; 3679 s8 sum_magnitude = -128; 3680 u32 sum_factor = 0; 3681 int i, count = 0; 3682 3683 /* 3684 * To properly average the decibel values (signal values given in dBm) 3685 * we need to do the math in linear space. Doing a linear average of 3686 * dB (dBm) values is a bit annoying though due to the large range of 3687 * at least -10 to -110 dBm that will not fit into a 32 bit integer. 3688 * 3689 * A 64 bit integer should be sufficient, but then we still have the 3690 * problem that there are no directly usable utility functions 3691 * available. 3692 * 3693 * So, lets not deal with that and instead do much of the calculation 3694 * with a 16.16 fixed point integer along with a base in dBm. 16.16 bit 3695 * gives us plenty of head-room for adding up a few values and even 3696 * doing some math on it. And the tail should be accurate enough too 3697 * (1/2^16 is somewhere around -48 dB, so effectively zero). 3698 * 3699 * i.e. the real value of sum is: 3700 * sum = sum_factor / 2^16 * 10^(sum_magnitude / 10) mW 3701 * 3702 * However, that does mean we need to be able to bring two values to 3703 * a common base, so we need a helper for that. 3704 * 3705 * Note that this function takes an input with unsigned negative dBm 3706 * values but returns a signed dBm (i.e. a negative value). 3707 */ 3708 3709 for (i = 0; i < ARRAY_SIZE(notif->noise); i++) { 3710 s8 val_magnitude; 3711 u32 val_factor; 3712 3713 if (notif->noise[i] == 0xff) 3714 continue; 3715 3716 val_factor = 0x10000; 3717 val_magnitude = -notif->noise[i]; 3718 3719 if (val_magnitude <= sum_magnitude) { 3720 u8 div_db = sum_magnitude - val_magnitude; 3721 3722 val_factor = iwl_mvm_div_by_db(val_factor, div_db); 3723 val_magnitude = sum_magnitude; 3724 } else { 3725 u8 div_db = val_magnitude - sum_magnitude; 3726 3727 sum_factor = iwl_mvm_div_by_db(sum_factor, div_db); 3728 sum_magnitude = val_magnitude; 3729 } 3730 3731 sum_factor += val_factor; 3732 count++; 3733 } 3734 3735 /* No valid noise measurement, return a very high noise level */ 3736 if (count == 0) 3737 return 0; 3738 3739 average_magnitude = sum_magnitude; 3740 average_factor = sum_factor / count; 3741 3742 /* 3743 * average_factor will be a number smaller than 1.0 (0x10000) at this 3744 * point. What we need to do now is to adjust average_magnitude so that 3745 * average_factor is between -0.5 dB and 0.5 dB. 3746 * 3747 * Just do -1 dB steps and find the point where 3748 * -0.5 dB * -i dB = 0x10000 * 10^(-0.5/10) / i dB 3749 * = div_by_db(0xe429, i) 3750 * is smaller than average_factor. 3751 */ 3752 for (i = 0; average_factor < iwl_mvm_div_by_db(0xe429, i); i++) { 3753 /* nothing */ 3754 } 3755 3756 return average_magnitude - i; 3757 } 3758 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_average_dbm_values); 3759 3760 void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm, 3761 struct iwl_rx_cmd_buffer *rxb) 3762 { 3763 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3764 const struct iwl_umac_scan_channel_survey_notif *notif = 3765 (void *)pkt->data; 3766 struct iwl_mvm_acs_survey_channel *info; 3767 enum nl80211_band band; 3768 int chan_idx; 3769 3770 lockdep_assert_held(&mvm->mutex); 3771 3772 if (!mvm->acs_survey) { 3773 size_t n_channels = 0; 3774 3775 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3776 if (!mvm->hw->wiphy->bands[band]) 3777 continue; 3778 3779 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3780 } 3781 3782 mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey, 3783 channels, n_channels), 3784 GFP_KERNEL); 3785 3786 if (!mvm->acs_survey) 3787 return; 3788 3789 mvm->acs_survey->n_channels = n_channels; 3790 n_channels = 0; 3791 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3792 if (!mvm->hw->wiphy->bands[band]) 3793 continue; 3794 3795 mvm->acs_survey->bands[band] = 3796 &mvm->acs_survey->channels[n_channels]; 3797 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3798 } 3799 } 3800 3801 band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band)); 3802 chan_idx = iwl_mvm_chanidx_from_phy(mvm, band, 3803 le32_to_cpu(notif->channel)); 3804 if (WARN_ON_ONCE(chan_idx < 0)) 3805 return; 3806 3807 IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n", 3808 mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq); 3809 3810 info = &mvm->acs_survey->bands[band][chan_idx]; 3811 3812 /* Times are all in ms */ 3813 info->time = le32_to_cpu(notif->active_time); 3814 info->time_busy = le32_to_cpu(notif->busy_time); 3815 info->time_rx = le32_to_cpu(notif->rx_time); 3816 info->time_tx = le32_to_cpu(notif->tx_time); 3817 info->noise = iwl_mvm_average_dbm_values(notif); 3818 } 3819