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 #define WFA_TPC_IE_LEN 9 52 53 struct iwl_mvm_scan_timing_params { 54 u32 suspend_time; 55 u32 max_out_time; 56 }; 57 58 static struct iwl_mvm_scan_timing_params scan_timing[] = { 59 [IWL_SCAN_TYPE_UNASSOC] = { 60 .suspend_time = 0, 61 .max_out_time = 0, 62 }, 63 [IWL_SCAN_TYPE_WILD] = { 64 .suspend_time = 30, 65 .max_out_time = 120, 66 }, 67 [IWL_SCAN_TYPE_MILD] = { 68 .suspend_time = 120, 69 .max_out_time = 120, 70 }, 71 [IWL_SCAN_TYPE_FRAGMENTED] = { 72 .suspend_time = 95, 73 .max_out_time = 44, 74 }, 75 [IWL_SCAN_TYPE_FAST_BALANCE] = { 76 .suspend_time = 30, 77 .max_out_time = 37, 78 }, 79 }; 80 81 struct iwl_mvm_scan_params { 82 /* For CDB this is low band scan type, for non-CDB - type. */ 83 enum iwl_mvm_scan_type type; 84 enum iwl_mvm_scan_type hb_type; 85 u32 n_channels; 86 u16 delay; 87 int n_ssids; 88 struct cfg80211_ssid *ssids; 89 struct ieee80211_channel **channels; 90 u32 flags; 91 u8 *mac_addr; 92 u8 *mac_addr_mask; 93 bool no_cck; 94 bool pass_all; 95 int n_match_sets; 96 struct iwl_scan_probe_req preq; 97 struct cfg80211_match_set *match_sets; 98 int n_scan_plans; 99 struct cfg80211_sched_scan_plan *scan_plans; 100 bool iter_notif; 101 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 102 u32 n_6ghz_params; 103 bool scan_6ghz; 104 bool enable_6ghz_passive; 105 bool respect_p2p_go, respect_p2p_go_hb; 106 s8 tsf_report_link_id; 107 u8 bssid[ETH_ALEN] __aligned(2); 108 }; 109 110 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 111 { 112 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 113 114 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 115 return (void *)&cmd->v8.data; 116 117 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 118 return (void *)&cmd->v7.data; 119 120 if (iwl_mvm_cdb_scan_api(mvm)) 121 return (void *)&cmd->v6.data; 122 123 return (void *)&cmd->v1.data; 124 } 125 126 static inline struct iwl_scan_umac_chan_param * 127 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 128 { 129 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 130 131 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 132 return &cmd->v8.channel; 133 134 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 135 return &cmd->v7.channel; 136 137 if (iwl_mvm_cdb_scan_api(mvm)) 138 return &cmd->v6.channel; 139 140 return &cmd->v1.channel; 141 } 142 143 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 144 { 145 if (mvm->scan_rx_ant != ANT_NONE) 146 return mvm->scan_rx_ant; 147 return iwl_mvm_get_valid_rx_ant(mvm); 148 } 149 150 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 151 { 152 u16 rx_chain; 153 u8 rx_ant; 154 155 rx_ant = iwl_mvm_scan_rx_ant(mvm); 156 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 157 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 158 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 159 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 160 return cpu_to_le16(rx_chain); 161 } 162 163 static inline __le32 164 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 165 bool no_cck) 166 { 167 u32 tx_ant; 168 169 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 170 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 171 172 if (band == NL80211_BAND_2GHZ && !no_cck) 173 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 | 174 tx_ant); 175 else 176 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 177 } 178 179 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 180 { 181 return mvm->tcm.result.global_load; 182 } 183 184 static enum iwl_mvm_traffic_load 185 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 186 { 187 return mvm->tcm.result.band_load[band]; 188 } 189 190 struct iwl_mvm_scan_iter_data { 191 u32 global_cnt; 192 struct ieee80211_vif *current_vif; 193 bool is_dcm_with_p2p_go; 194 }; 195 196 static void iwl_mvm_scan_iterator(void *_data, u8 *mac, 197 struct ieee80211_vif *vif) 198 { 199 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 200 struct iwl_mvm_scan_iter_data *data = _data; 201 struct iwl_mvm_vif *curr_mvmvif; 202 203 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && 204 mvmvif->deflink.phy_ctxt && 205 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) 206 data->global_cnt += 1; 207 208 if (!data->current_vif || vif == data->current_vif) 209 return; 210 211 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); 212 213 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO && 214 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && 215 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id) 216 data->is_dcm_with_p2p_go = true; 217 } 218 219 static enum 220 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 221 struct ieee80211_vif *vif, 222 enum iwl_mvm_traffic_load load, 223 bool low_latency) 224 { 225 struct iwl_mvm_scan_iter_data data = { 226 .current_vif = vif, 227 .is_dcm_with_p2p_go = false, 228 .global_cnt = 0, 229 }; 230 231 /* 232 * A scanning AP interface probably wants to generate a survey to do 233 * ACS (automatic channel selection). 234 * Force a non-fragmented scan in that case. 235 */ 236 if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP) 237 return IWL_SCAN_TYPE_WILD; 238 239 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 240 IEEE80211_IFACE_ITER_NORMAL, 241 iwl_mvm_scan_iterator, 242 &data); 243 244 if (!data.global_cnt) 245 return IWL_SCAN_TYPE_UNASSOC; 246 247 if (fw_has_api(&mvm->fw->ucode_capa, 248 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 249 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 250 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 251 return IWL_SCAN_TYPE_FRAGMENTED; 252 253 /* 254 * in case of DCM with P2P GO set all scan requests as 255 * fast-balance scan 256 */ 257 if (vif && vif->type == NL80211_IFTYPE_STATION && 258 data.is_dcm_with_p2p_go) 259 return IWL_SCAN_TYPE_FAST_BALANCE; 260 } 261 262 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 263 return IWL_SCAN_TYPE_MILD; 264 265 return IWL_SCAN_TYPE_WILD; 266 } 267 268 static enum 269 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 270 struct ieee80211_vif *vif) 271 { 272 enum iwl_mvm_traffic_load load; 273 bool low_latency; 274 275 load = iwl_mvm_get_traffic_load(mvm); 276 low_latency = iwl_mvm_low_latency(mvm); 277 278 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 279 } 280 281 static enum 282 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 283 struct ieee80211_vif *vif, 284 enum nl80211_band band) 285 { 286 enum iwl_mvm_traffic_load load; 287 bool low_latency; 288 289 load = iwl_mvm_get_traffic_load_band(mvm, band); 290 low_latency = iwl_mvm_low_latency_band(mvm, band); 291 292 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 293 } 294 295 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 296 { 297 /* require rrm scan whenever the fw supports it */ 298 return fw_has_capa(&mvm->fw->ucode_capa, 299 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 300 } 301 302 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 303 { 304 int max_probe_len; 305 306 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 307 308 /* we create the 802.11 header SSID element and WFA TPC element */ 309 max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN; 310 311 /* DS parameter set element is added on 2.4GHZ band if required */ 312 if (iwl_mvm_rrm_scan_needed(mvm)) 313 max_probe_len -= 3; 314 315 return max_probe_len; 316 } 317 318 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 319 { 320 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 321 322 /* TODO: [BUG] This function should return the maximum allowed size of 323 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 324 * in the same command. So the correct implementation of this function 325 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 326 * command has only 512 bytes and it would leave us with about 240 327 * bytes for scan IEs, which is clearly not enough. So meanwhile 328 * we will report an incorrect value. This may result in a failure to 329 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 330 * functions with -ENOBUFS, if a large enough probe will be provided. 331 */ 332 return max_ie_len; 333 } 334 335 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 336 struct iwl_rx_cmd_buffer *rxb) 337 { 338 struct iwl_rx_packet *pkt = rxb_addr(rxb); 339 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 340 341 IWL_DEBUG_SCAN(mvm, 342 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 343 notif->status, notif->scanned_channels); 344 345 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 346 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 347 ieee80211_sched_scan_results(mvm->hw); 348 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 349 } 350 } 351 352 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 353 struct iwl_rx_cmd_buffer *rxb) 354 { 355 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 356 ieee80211_sched_scan_results(mvm->hw); 357 } 358 359 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 360 { 361 switch (status) { 362 case IWL_SCAN_EBS_SUCCESS: 363 return "successful"; 364 case IWL_SCAN_EBS_INACTIVE: 365 return "inactive"; 366 case IWL_SCAN_EBS_FAILED: 367 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 368 default: 369 return "failed"; 370 } 371 } 372 373 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 374 struct iwl_rx_cmd_buffer *rxb) 375 { 376 struct iwl_rx_packet *pkt = rxb_addr(rxb); 377 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 378 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 379 380 /* If this happens, the firmware has mistakenly sent an LMAC 381 * notification during UMAC scans -- warn and ignore it. 382 */ 383 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 384 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 385 return; 386 387 /* scan status must be locked for proper checking */ 388 lockdep_assert_held(&mvm->mutex); 389 390 /* We first check if we were stopping a scan, in which case we 391 * just clear the stopping flag. Then we check if it was a 392 * firmware initiated stop, in which case we need to inform 393 * mac80211. 394 * Note that we can have a stopping and a running scan 395 * simultaneously, but we can't have two different types of 396 * scans stopping or running at the same time (since LMAC 397 * doesn't support it). 398 */ 399 400 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 401 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 402 403 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 404 aborted ? "aborted" : "completed", 405 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 406 IWL_DEBUG_SCAN(mvm, 407 "Last line %d, Last iteration %d, Time after last iteration %d\n", 408 scan_notif->last_schedule_line, 409 scan_notif->last_schedule_iteration, 410 __le32_to_cpu(scan_notif->time_after_last_iter)); 411 412 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 413 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 414 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 415 aborted ? "aborted" : "completed", 416 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 417 418 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 419 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 420 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 421 422 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 423 aborted ? "aborted" : "completed", 424 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 425 IWL_DEBUG_SCAN(mvm, 426 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 427 scan_notif->last_schedule_line, 428 scan_notif->last_schedule_iteration, 429 __le32_to_cpu(scan_notif->time_after_last_iter)); 430 431 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 432 ieee80211_sched_scan_stopped(mvm->hw); 433 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 434 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 435 struct cfg80211_scan_info info = { 436 .aborted = aborted, 437 }; 438 439 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 440 aborted ? "aborted" : "completed", 441 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 442 443 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 444 ieee80211_scan_completed(mvm->hw, &info); 445 cancel_delayed_work(&mvm->scan_timeout_dwork); 446 iwl_mvm_resume_tcm(mvm); 447 } else { 448 IWL_ERR(mvm, 449 "got scan complete notification but no scan is running\n"); 450 } 451 452 mvm->last_ebs_successful = 453 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 454 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 455 } 456 457 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 458 { 459 int i; 460 461 for (i = 0; i < PROBE_OPTION_MAX; i++) { 462 if (!ssid_list[i].len) 463 break; 464 if (ssid_list[i].len == ssid_len && 465 #if defined(__linux__) 466 !memcmp(ssid_list->ssid, ssid, ssid_len)) 467 #elif defined(__FreeBSD__) 468 !memcmp(ssid_list[i].ssid, ssid, ssid_len)) 469 #endif 470 return i; 471 } 472 return -1; 473 } 474 475 /* We insert the SSIDs in an inverted order, because the FW will 476 * invert it back. 477 */ 478 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 479 struct iwl_ssid_ie *ssids, 480 u32 *ssid_bitmap) 481 { 482 int i, j; 483 int index; 484 u32 tmp_bitmap = 0; 485 486 /* 487 * copy SSIDs from match list. 488 * iwl_config_sched_scan_profiles() uses the order of these ssids to 489 * config match list. 490 */ 491 for (i = 0, j = params->n_match_sets - 1; 492 j >= 0 && i < PROBE_OPTION_MAX; 493 i++, j--) { 494 /* skip empty SSID matchsets */ 495 if (!params->match_sets[j].ssid.ssid_len) 496 continue; 497 ssids[i].id = WLAN_EID_SSID; 498 ssids[i].len = params->match_sets[j].ssid.ssid_len; 499 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 500 ssids[i].len); 501 } 502 503 /* add SSIDs from scan SSID list */ 504 for (j = params->n_ssids - 1; 505 j >= 0 && i < PROBE_OPTION_MAX; 506 i++, j--) { 507 index = iwl_ssid_exist(params->ssids[j].ssid, 508 params->ssids[j].ssid_len, 509 ssids); 510 if (index < 0) { 511 ssids[i].id = WLAN_EID_SSID; 512 ssids[i].len = params->ssids[j].ssid_len; 513 memcpy(ssids[i].ssid, params->ssids[j].ssid, 514 ssids[i].len); 515 tmp_bitmap |= BIT(i); 516 } else { 517 tmp_bitmap |= BIT(index); 518 } 519 } 520 if (ssid_bitmap) 521 *ssid_bitmap = tmp_bitmap; 522 } 523 524 static int 525 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 526 struct cfg80211_sched_scan_request *req) 527 { 528 struct iwl_scan_offload_profile *profile; 529 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 530 struct iwl_scan_offload_blocklist *blocklist; 531 struct iwl_scan_offload_profile_cfg_data *data; 532 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 533 int profile_cfg_size = sizeof(*data) + 534 sizeof(*profile) * max_profiles; 535 struct iwl_host_cmd cmd = { 536 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 537 .len[1] = profile_cfg_size, 538 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 539 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 540 }; 541 int blocklist_len; 542 int i; 543 int ret; 544 545 if (WARN_ON(req->n_match_sets > max_profiles)) 546 return -EIO; 547 548 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 549 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 550 else 551 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 552 553 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 554 if (!blocklist) 555 return -ENOMEM; 556 557 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 558 if (!profile_cfg_v1) { 559 ret = -ENOMEM; 560 goto free_blocklist; 561 } 562 563 cmd.data[0] = blocklist; 564 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 565 cmd.data[1] = profile_cfg_v1; 566 567 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 568 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 569 struct iwl_scan_offload_profile_cfg *profile_cfg = 570 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 571 572 data = &profile_cfg->data; 573 } else { 574 data = &profile_cfg_v1->data; 575 } 576 577 /* No blocklist configuration */ 578 data->num_profiles = req->n_match_sets; 579 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 580 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 581 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 582 583 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 584 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 585 586 for (i = 0; i < req->n_match_sets; i++) { 587 profile = &profile_cfg_v1->profiles[i]; 588 profile->ssid_index = i; 589 /* Support any cipher and auth algorithm */ 590 profile->unicast_cipher = 0xff; 591 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | 592 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | 593 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 594 profile->network_type = IWL_NETWORK_TYPE_ANY; 595 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 596 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 597 } 598 599 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 600 601 ret = iwl_mvm_send_cmd(mvm, &cmd); 602 kfree(profile_cfg_v1); 603 free_blocklist: 604 kfree(blocklist); 605 606 return ret; 607 } 608 609 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 610 struct cfg80211_sched_scan_request *req) 611 { 612 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 613 IWL_DEBUG_SCAN(mvm, 614 "Sending scheduled scan with filtering, n_match_sets %d\n", 615 req->n_match_sets); 616 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 617 return false; 618 } 619 620 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 621 622 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 623 return true; 624 } 625 626 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 627 { 628 int ret; 629 struct iwl_host_cmd cmd = { 630 .id = SCAN_OFFLOAD_ABORT_CMD, 631 }; 632 u32 status = CAN_ABORT_STATUS; 633 634 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 635 if (ret) 636 return ret; 637 638 if (status != CAN_ABORT_STATUS) { 639 /* 640 * The scan abort will return 1 for success or 641 * 2 for "failure". A failure condition can be 642 * due to simply not being in an active scan which 643 * can occur if we send the scan abort before the 644 * microcode has notified us that a scan is completed. 645 */ 646 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 647 ret = -ENOENT; 648 } 649 650 return ret; 651 } 652 653 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 654 struct iwl_scan_req_tx_cmd *tx_cmd, 655 bool no_cck) 656 { 657 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 658 TX_CMD_FLG_BT_DIS); 659 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 660 NL80211_BAND_2GHZ, 661 no_cck); 662 663 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 664 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 665 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 666 667 /* 668 * Fw doesn't use this sta anymore, pending deprecation via HOST API 669 * change 670 */ 671 } else { 672 tx_cmd[0].sta_id = 0xff; 673 tx_cmd[1].sta_id = 0xff; 674 } 675 676 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 677 TX_CMD_FLG_BT_DIS); 678 679 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 680 NL80211_BAND_5GHZ, 681 no_cck); 682 } 683 684 static void 685 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 686 struct ieee80211_channel **channels, 687 int n_channels, u32 ssid_bitmap, 688 struct iwl_scan_req_lmac *cmd) 689 { 690 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 691 int i; 692 693 for (i = 0; i < n_channels; i++) { 694 channel_cfg[i].channel_num = 695 cpu_to_le16(channels[i]->hw_value); 696 channel_cfg[i].iter_count = cpu_to_le16(1); 697 channel_cfg[i].iter_interval = 0; 698 channel_cfg[i].flags = 699 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 700 ssid_bitmap); 701 } 702 } 703 704 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 705 size_t len, u8 *const pos) 706 { 707 static const u8 before_ds_params[] = { 708 WLAN_EID_SSID, 709 WLAN_EID_SUPP_RATES, 710 WLAN_EID_REQUEST, 711 WLAN_EID_EXT_SUPP_RATES, 712 }; 713 size_t offs; 714 u8 *newpos = pos; 715 716 if (!iwl_mvm_rrm_scan_needed(mvm)) { 717 memcpy(newpos, ies, len); 718 return newpos + len; 719 } 720 721 offs = ieee80211_ie_split(ies, len, 722 before_ds_params, 723 ARRAY_SIZE(before_ds_params), 724 0); 725 726 memcpy(newpos, ies, offs); 727 newpos += offs; 728 729 /* Add a placeholder for DS Parameter Set element */ 730 *newpos++ = WLAN_EID_DS_PARAMS; 731 *newpos++ = 1; 732 *newpos++ = 0; 733 734 memcpy(newpos, ies + offs, len - offs); 735 newpos += len - offs; 736 737 return newpos; 738 } 739 740 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 741 { 742 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 743 pos[1] = WFA_TPC_IE_LEN - 2; 744 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 745 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 746 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 747 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 748 pos[6] = 0; 749 /* pos[7] - tx power will be inserted by the FW */ 750 pos[7] = 0; 751 pos[8] = 0; 752 } 753 754 static void 755 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 756 struct ieee80211_scan_ies *ies, 757 struct iwl_mvm_scan_params *params) 758 { 759 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 760 u8 *pos, *newpos; 761 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 762 params->mac_addr : NULL; 763 764 /* 765 * Unfortunately, right now the offload scan doesn't support randomising 766 * within the firmware, so until the firmware API is ready we implement 767 * it in the driver. This means that the scan iterations won't really be 768 * random, only when it's restarted, but at least that helps a bit. 769 */ 770 if (mac_addr) 771 get_random_mask_addr(frame->sa, mac_addr, 772 params->mac_addr_mask); 773 else 774 memcpy(frame->sa, vif->addr, ETH_ALEN); 775 776 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 777 eth_broadcast_addr(frame->da); 778 ether_addr_copy(frame->bssid, params->bssid); 779 frame->seq_ctrl = 0; 780 781 pos = frame->u.probe_req.variable; 782 *pos++ = WLAN_EID_SSID; 783 *pos++ = 0; 784 785 params->preq.mac_header.offset = 0; 786 params->preq.mac_header.len = cpu_to_le16(24 + 2); 787 788 /* Insert ds parameter set element on 2.4 GHz band */ 789 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 790 ies->ies[NL80211_BAND_2GHZ], 791 ies->len[NL80211_BAND_2GHZ], 792 pos); 793 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 794 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 795 pos = newpos; 796 797 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 798 ies->len[NL80211_BAND_5GHZ]); 799 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 800 params->preq.band_data[1].len = 801 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 802 pos += ies->len[NL80211_BAND_5GHZ]; 803 804 memcpy(pos, ies->ies[NL80211_BAND_6GHZ], 805 ies->len[NL80211_BAND_6GHZ]); 806 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); 807 params->preq.band_data[2].len = 808 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); 809 pos += ies->len[NL80211_BAND_6GHZ]; 810 memcpy(pos, ies->common_ies, ies->common_ie_len); 811 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 812 813 if (iwl_mvm_rrm_scan_needed(mvm) && 814 !fw_has_capa(&mvm->fw->ucode_capa, 815 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 816 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 817 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 818 WFA_TPC_IE_LEN); 819 } else { 820 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 821 } 822 } 823 824 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 825 struct iwl_scan_req_lmac *cmd, 826 struct iwl_mvm_scan_params *params) 827 { 828 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 829 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 830 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 831 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 832 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 833 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 834 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 835 } 836 837 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 838 struct ieee80211_scan_ies *ies, 839 int n_channels) 840 { 841 return ((n_ssids <= PROBE_OPTION_MAX) && 842 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 843 (ies->common_ie_len + 844 ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] + 845 ies->len[NL80211_BAND_6GHZ] <= 846 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 847 } 848 849 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 850 struct ieee80211_vif *vif) 851 { 852 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 853 bool low_latency; 854 855 if (iwl_mvm_is_cdb_supported(mvm)) 856 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 857 else 858 low_latency = iwl_mvm_low_latency(mvm); 859 860 /* We can only use EBS if: 861 * 1. the feature is supported; 862 * 2. the last EBS was successful; 863 * 3. if only single scan, the single scan EBS API is supported; 864 * 4. it's not a p2p find operation. 865 * 5. we are not in low latency mode, 866 * or if fragmented ebs is supported by the FW 867 * 6. the VIF is not an AP interface (scan wants survey results) 868 */ 869 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 870 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 871 vif->type != NL80211_IFTYPE_P2P_DEVICE && 872 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) && 873 ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP); 874 } 875 876 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 877 { 878 return params->n_scan_plans == 1 && 879 params->scan_plans[0].iterations == 1; 880 } 881 882 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 883 { 884 return (type == IWL_SCAN_TYPE_FRAGMENTED || 885 type == IWL_SCAN_TYPE_FAST_BALANCE); 886 } 887 888 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 889 struct iwl_mvm_scan_params *params, 890 struct ieee80211_vif *vif) 891 { 892 int flags = 0; 893 894 if (params->n_ssids == 0) 895 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 896 897 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 898 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 899 900 if (iwl_mvm_is_scan_fragmented(params->type)) 901 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 902 903 if (iwl_mvm_rrm_scan_needed(mvm) && 904 fw_has_capa(&mvm->fw->ucode_capa, 905 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 906 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 907 908 if (params->pass_all) 909 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 910 else 911 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 912 913 #ifdef CONFIG_IWLWIFI_DEBUGFS 914 if (mvm->scan_iter_notif_enabled) 915 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 916 #endif 917 918 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 919 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 920 921 if (iwl_mvm_is_regular_scan(params) && 922 vif->type != NL80211_IFTYPE_P2P_DEVICE && 923 !iwl_mvm_is_scan_fragmented(params->type)) 924 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 925 926 return flags; 927 } 928 929 static void 930 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 931 struct iwl_scan_probe_req *src_p_req) 932 { 933 int i; 934 935 p_req->mac_header = src_p_req->mac_header; 936 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 937 p_req->band_data[i] = src_p_req->band_data[i]; 938 p_req->common_data = src_p_req->common_data; 939 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 940 } 941 942 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 943 struct iwl_mvm_scan_params *params) 944 { 945 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 946 struct iwl_scan_probe_req_v1 *preq = 947 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 948 mvm->fw->ucode_capa.n_scan_channels); 949 u32 ssid_bitmap = 0; 950 int i; 951 u8 band; 952 953 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 954 return -EINVAL; 955 956 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 957 958 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 959 cmd->iter_num = cpu_to_le32(1); 960 cmd->n_channels = (u8)params->n_channels; 961 962 cmd->delay = cpu_to_le32(params->delay); 963 964 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 965 vif)); 966 967 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 968 cmd->flags = cpu_to_le32(band); 969 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 970 MAC_FILTER_IN_BEACON); 971 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 972 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 973 974 /* this API uses bits 1-20 instead of 0-19 */ 975 ssid_bitmap <<= 1; 976 977 for (i = 0; i < params->n_scan_plans; i++) { 978 struct cfg80211_sched_scan_plan *scan_plan = 979 ¶ms->scan_plans[i]; 980 981 cmd->schedule[i].delay = 982 cpu_to_le16(scan_plan->interval); 983 cmd->schedule[i].iterations = scan_plan->iterations; 984 cmd->schedule[i].full_scan_mul = 1; 985 } 986 987 /* 988 * If the number of iterations of the last scan plan is set to 989 * zero, it should run infinitely. However, this is not always the case. 990 * For example, when regular scan is requested the driver sets one scan 991 * plan with one iteration. 992 */ 993 if (!cmd->schedule[i - 1].iterations) 994 cmd->schedule[i - 1].iterations = 0xff; 995 996 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 997 cmd->channel_opt[0].flags = 998 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 999 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1000 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1001 cmd->channel_opt[0].non_ebs_ratio = 1002 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 1003 cmd->channel_opt[1].flags = 1004 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1005 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1006 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1007 cmd->channel_opt[1].non_ebs_ratio = 1008 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1009 } 1010 1011 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1012 params->n_channels, ssid_bitmap, cmd); 1013 1014 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1015 1016 return 0; 1017 } 1018 1019 static int rate_to_scan_rate_flag(unsigned int rate) 1020 { 1021 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1022 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1023 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1024 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1025 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1026 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1027 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1028 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1029 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1030 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1031 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1032 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1033 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1034 }; 1035 1036 return rate_to_scan_rate[rate]; 1037 } 1038 1039 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1040 { 1041 struct ieee80211_supported_band *band; 1042 unsigned int rates = 0; 1043 int i; 1044 1045 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1046 for (i = 0; i < band->n_bitrates; i++) 1047 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1048 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1049 for (i = 0; i < band->n_bitrates; i++) 1050 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1051 1052 /* Set both basic rates and supported rates */ 1053 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1054 1055 return cpu_to_le32(rates); 1056 } 1057 1058 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1059 struct iwl_scan_dwell *dwell) 1060 { 1061 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1062 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1063 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1064 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1065 } 1066 1067 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1068 u32 max_channels) 1069 { 1070 struct ieee80211_supported_band *band; 1071 int i, j = 0; 1072 1073 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1074 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1075 channels[j] = band->channels[i].hw_value; 1076 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1077 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1078 channels[j] = band->channels[i].hw_value; 1079 } 1080 1081 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1082 u32 flags, u8 channel_flags, 1083 u32 max_channels) 1084 { 1085 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1086 struct iwl_scan_config_v1 *cfg = config; 1087 1088 cfg->flags = cpu_to_le32(flags); 1089 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1090 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1091 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1092 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1093 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1094 1095 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1096 1097 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1098 1099 /* This function should not be called when using ADD_STA ver >=12 */ 1100 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1101 1102 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1103 cfg->channel_flags = channel_flags; 1104 1105 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1106 } 1107 1108 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1109 u32 flags, u8 channel_flags, 1110 u32 max_channels) 1111 { 1112 struct iwl_scan_config_v2 *cfg = config; 1113 1114 cfg->flags = cpu_to_le32(flags); 1115 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1116 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1117 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1118 1119 if (iwl_mvm_is_cdb_supported(mvm)) { 1120 enum iwl_mvm_scan_type lb_type, hb_type; 1121 1122 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1123 NL80211_BAND_2GHZ); 1124 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1125 NL80211_BAND_5GHZ); 1126 1127 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1128 cpu_to_le32(scan_timing[lb_type].max_out_time); 1129 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1130 cpu_to_le32(scan_timing[lb_type].suspend_time); 1131 1132 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1133 cpu_to_le32(scan_timing[hb_type].max_out_time); 1134 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1135 cpu_to_le32(scan_timing[hb_type].suspend_time); 1136 } else { 1137 enum iwl_mvm_scan_type type = 1138 iwl_mvm_get_scan_type(mvm, NULL); 1139 1140 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1141 cpu_to_le32(scan_timing[type].max_out_time); 1142 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1143 cpu_to_le32(scan_timing[type].suspend_time); 1144 } 1145 1146 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1147 1148 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1149 1150 /* This function should not be called when using ADD_STA ver >=12 */ 1151 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 1152 1153 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1154 cfg->channel_flags = channel_flags; 1155 1156 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1157 } 1158 1159 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1160 { 1161 void *cfg; 1162 int ret, cmd_size; 1163 struct iwl_host_cmd cmd = { 1164 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1165 }; 1166 enum iwl_mvm_scan_type type; 1167 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1168 int num_channels = 1169 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1170 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1171 u32 flags; 1172 u8 channel_flags; 1173 1174 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1175 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1176 1177 if (iwl_mvm_is_cdb_supported(mvm)) { 1178 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1179 NL80211_BAND_2GHZ); 1180 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1181 NL80211_BAND_5GHZ); 1182 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1183 return 0; 1184 } else { 1185 type = iwl_mvm_get_scan_type(mvm, NULL); 1186 if (type == mvm->scan_type) 1187 return 0; 1188 } 1189 1190 if (iwl_mvm_cdb_scan_api(mvm)) 1191 cmd_size = sizeof(struct iwl_scan_config_v2); 1192 else 1193 cmd_size = sizeof(struct iwl_scan_config_v1); 1194 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1195 1196 cfg = kzalloc(cmd_size, GFP_KERNEL); 1197 if (!cfg) 1198 return -ENOMEM; 1199 1200 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1201 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1202 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1203 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1204 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1205 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1206 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1207 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1208 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1209 SCAN_CONFIG_N_CHANNELS(num_channels) | 1210 (iwl_mvm_is_scan_fragmented(type) ? 1211 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1212 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1213 1214 channel_flags = IWL_CHANNEL_FLAG_EBS | 1215 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1216 IWL_CHANNEL_FLAG_EBS_ADD | 1217 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1218 1219 /* 1220 * Check for fragmented scan on LMAC2 - high band. 1221 * LMAC1 - low band is checked above. 1222 */ 1223 if (iwl_mvm_cdb_scan_api(mvm)) { 1224 if (iwl_mvm_is_cdb_supported(mvm)) 1225 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1226 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1227 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1228 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1229 num_channels); 1230 } else { 1231 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1232 num_channels); 1233 } 1234 1235 cmd.data[0] = cfg; 1236 cmd.len[0] = cmd_size; 1237 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1238 1239 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1240 1241 ret = iwl_mvm_send_cmd(mvm, &cmd); 1242 if (!ret) { 1243 mvm->scan_type = type; 1244 mvm->hb_scan_type = hb_type; 1245 } 1246 1247 kfree(cfg); 1248 return ret; 1249 } 1250 1251 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1252 { 1253 struct iwl_scan_config cfg; 1254 struct iwl_host_cmd cmd = { 1255 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), 1256 .len[0] = sizeof(cfg), 1257 .data[0] = &cfg, 1258 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1259 }; 1260 1261 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1262 return iwl_mvm_legacy_config_scan(mvm); 1263 1264 memset(&cfg, 0, sizeof(cfg)); 1265 1266 if (!iwl_mvm_has_new_station_api(mvm->fw)) { 1267 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1268 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { 1269 /* 1270 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1271 * version 5. 1272 */ 1273 cfg.bcast_sta_id = 0xff; 1274 } 1275 1276 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1277 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1278 1279 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1280 1281 return iwl_mvm_send_cmd(mvm, &cmd); 1282 } 1283 1284 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1285 { 1286 int i; 1287 1288 for (i = 0; i < mvm->max_scans; i++) 1289 if (mvm->scan_uid_status[i] == status) 1290 return i; 1291 1292 return -ENOENT; 1293 } 1294 1295 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1296 struct iwl_scan_req_umac *cmd, 1297 struct iwl_mvm_scan_params *params) 1298 { 1299 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1300 u8 active_dwell, passive_dwell; 1301 1302 timing = &scan_timing[params->type]; 1303 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1304 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1305 1306 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1307 cmd->v7.adwell_default_n_aps_social = 1308 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1309 cmd->v7.adwell_default_n_aps = 1310 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1311 1312 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1313 cmd->v9.adwell_default_hb_n_aps = 1314 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1315 1316 /* if custom max budget was configured with debugfs */ 1317 if (IWL_MVM_ADWELL_MAX_BUDGET) 1318 cmd->v7.adwell_max_budget = 1319 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1320 else if (params->n_ssids && params->ssids[0].ssid_len) 1321 cmd->v7.adwell_max_budget = 1322 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1323 else 1324 cmd->v7.adwell_max_budget = 1325 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1326 1327 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1328 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1329 cpu_to_le32(timing->max_out_time); 1330 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1331 cpu_to_le32(timing->suspend_time); 1332 1333 if (iwl_mvm_is_cdb_supported(mvm)) { 1334 hb_timing = &scan_timing[params->hb_type]; 1335 1336 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1337 cpu_to_le32(hb_timing->max_out_time); 1338 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1339 cpu_to_le32(hb_timing->suspend_time); 1340 } 1341 1342 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1343 cmd->v7.active_dwell = active_dwell; 1344 cmd->v7.passive_dwell = passive_dwell; 1345 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1346 } else { 1347 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1348 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1349 if (iwl_mvm_is_cdb_supported(mvm)) { 1350 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1351 active_dwell; 1352 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1353 passive_dwell; 1354 } 1355 } 1356 } else { 1357 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1358 cmd->v1.active_dwell = active_dwell; 1359 cmd->v1.passive_dwell = passive_dwell; 1360 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1361 1362 if (iwl_mvm_is_cdb_supported(mvm)) { 1363 hb_timing = &scan_timing[params->hb_type]; 1364 1365 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1366 cpu_to_le32(hb_timing->max_out_time); 1367 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1368 cpu_to_le32(hb_timing->suspend_time); 1369 } 1370 1371 if (iwl_mvm_cdb_scan_api(mvm)) { 1372 cmd->v6.scan_priority = 1373 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1374 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1375 cpu_to_le32(timing->max_out_time); 1376 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1377 cpu_to_le32(timing->suspend_time); 1378 } else { 1379 cmd->v1.scan_priority = 1380 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1381 cmd->v1.max_out_time = 1382 cpu_to_le32(timing->max_out_time); 1383 cmd->v1.suspend_time = 1384 cpu_to_le32(timing->suspend_time); 1385 } 1386 } 1387 1388 if (iwl_mvm_is_regular_scan(params)) 1389 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1390 else 1391 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1392 } 1393 1394 static u32 iwl_mvm_scan_umac_ooc_priority(int type) 1395 { 1396 if (type == IWL_MVM_SCAN_REGULAR) 1397 return IWL_SCAN_PRIORITY_EXT_6; 1398 if (type == IWL_MVM_SCAN_INT_MLO) 1399 return IWL_SCAN_PRIORITY_EXT_4; 1400 1401 return IWL_SCAN_PRIORITY_EXT_2; 1402 } 1403 1404 static void 1405 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, 1406 struct iwl_scan_general_params_v11 *general_params, 1407 struct iwl_mvm_scan_params *params) 1408 { 1409 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1410 u8 active_dwell, passive_dwell; 1411 1412 timing = &scan_timing[params->type]; 1413 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1414 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1415 1416 general_params->adwell_default_social_chn = 1417 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1418 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1419 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1420 1421 /* if custom max budget was configured with debugfs */ 1422 if (IWL_MVM_ADWELL_MAX_BUDGET) 1423 general_params->adwell_max_budget = 1424 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1425 else if (params->n_ssids && params->ssids[0].ssid_len) 1426 general_params->adwell_max_budget = 1427 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1428 else 1429 general_params->adwell_max_budget = 1430 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1431 1432 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1433 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1434 cpu_to_le32(timing->max_out_time); 1435 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1436 cpu_to_le32(timing->suspend_time); 1437 1438 hb_timing = &scan_timing[params->hb_type]; 1439 1440 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1441 cpu_to_le32(hb_timing->max_out_time); 1442 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1443 cpu_to_le32(hb_timing->suspend_time); 1444 1445 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1446 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1447 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1448 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1449 } 1450 1451 struct iwl_mvm_scan_channel_segment { 1452 u8 start_idx; 1453 u8 end_idx; 1454 u8 first_channel_id; 1455 u8 last_channel_id; 1456 u8 channel_spacing_shift; 1457 u8 band; 1458 }; 1459 1460 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1461 { 1462 .start_idx = 0, 1463 .end_idx = 13, 1464 .first_channel_id = 1, 1465 .last_channel_id = 14, 1466 .channel_spacing_shift = 0, 1467 .band = PHY_BAND_24 1468 }, 1469 { 1470 .start_idx = 14, 1471 .end_idx = 41, 1472 .first_channel_id = 36, 1473 .last_channel_id = 144, 1474 .channel_spacing_shift = 2, 1475 .band = PHY_BAND_5 1476 }, 1477 { 1478 .start_idx = 42, 1479 .end_idx = 50, 1480 .first_channel_id = 149, 1481 .last_channel_id = 181, 1482 .channel_spacing_shift = 2, 1483 .band = PHY_BAND_5 1484 }, 1485 { 1486 .start_idx = 51, 1487 .end_idx = 111, 1488 .first_channel_id = 1, 1489 .last_channel_id = 241, 1490 .channel_spacing_shift = 2, 1491 .band = PHY_BAND_6 1492 }, 1493 }; 1494 1495 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1496 { 1497 int i, index; 1498 1499 if (!channel_id) 1500 return -EINVAL; 1501 1502 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1503 const struct iwl_mvm_scan_channel_segment *ch_segment = 1504 &scan_channel_segments[i]; 1505 u32 ch_offset; 1506 1507 if (ch_segment->band != band || 1508 ch_segment->first_channel_id > channel_id || 1509 ch_segment->last_channel_id < channel_id) 1510 continue; 1511 1512 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1513 ch_segment->channel_spacing_shift; 1514 1515 index = scan_channel_segments[i].start_idx + ch_offset; 1516 if (index < IWL_SCAN_NUM_CHANNELS) 1517 return index; 1518 1519 break; 1520 } 1521 1522 return -EINVAL; 1523 } 1524 1525 static const u8 p2p_go_friendly_chs[] = { 1526 36, 40, 44, 48, 149, 153, 157, 161, 165, 1527 }; 1528 1529 static const u8 social_chs[] = { 1530 1, 6, 11 1531 }; 1532 1533 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1534 u8 ch_id, u8 band, u8 *ch_bitmap, 1535 size_t bitmap_n_entries) 1536 { 1537 int i; 1538 1539 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1540 return; 1541 1542 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1543 if (p2p_go_friendly_chs[i] == ch_id) { 1544 int ch_idx, bitmap_idx; 1545 1546 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1547 if (ch_idx < 0) 1548 return; 1549 1550 bitmap_idx = ch_idx / 8; 1551 if (bitmap_idx >= bitmap_n_entries) 1552 return; 1553 1554 ch_idx = ch_idx % 8; 1555 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1556 1557 return; 1558 } 1559 } 1560 } 1561 1562 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1563 { 1564 int i; 1565 u32 flags = 0; 1566 1567 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1568 goto out; 1569 1570 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1571 if (p2p_go_friendly_chs[i] == ch_id) { 1572 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1573 break; 1574 } 1575 } 1576 1577 if (flags) 1578 goto out; 1579 1580 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1581 if (social_chs[i] == ch_id) { 1582 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1583 break; 1584 } 1585 } 1586 1587 out: 1588 return flags; 1589 } 1590 1591 static void 1592 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1593 struct ieee80211_channel **channels, 1594 int n_channels, u32 flags, 1595 struct iwl_scan_channel_cfg_umac *channel_cfg) 1596 { 1597 int i; 1598 1599 for (i = 0; i < n_channels; i++) { 1600 channel_cfg[i].flags = cpu_to_le32(flags); 1601 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1602 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1603 enum nl80211_band band = channels[i]->band; 1604 1605 channel_cfg[i].v2.band = 1606 iwl_mvm_phy_band_from_nl80211(band); 1607 channel_cfg[i].v2.iter_count = 1; 1608 channel_cfg[i].v2.iter_interval = 0; 1609 } else { 1610 channel_cfg[i].v1.iter_count = 1; 1611 channel_cfg[i].v1.iter_interval = 0; 1612 } 1613 } 1614 } 1615 1616 static void 1617 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1618 struct ieee80211_channel **channels, 1619 struct iwl_scan_channel_params_v4 *cp, 1620 int n_channels, u32 flags, 1621 enum nl80211_iftype vif_type) 1622 { 1623 u8 *bitmap = cp->adwell_ch_override_bitmap; 1624 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1625 int i; 1626 1627 for (i = 0; i < n_channels; i++) { 1628 enum nl80211_band band = channels[i]->band; 1629 struct iwl_scan_channel_cfg_umac *cfg = 1630 &cp->channel_config[i]; 1631 1632 cfg->flags = cpu_to_le32(flags); 1633 cfg->v2.channel_num = channels[i]->hw_value; 1634 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1635 cfg->v2.iter_count = 1; 1636 cfg->v2.iter_interval = 0; 1637 1638 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1639 cfg->v2.channel_num, 1640 cfg->v2.band, bitmap, 1641 bitmap_n_entries); 1642 } 1643 } 1644 1645 static void 1646 iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm, 1647 struct ieee80211_channel **channels, 1648 struct iwl_scan_channel_params_v7 *cp, 1649 int n_channels, u32 flags, 1650 enum nl80211_iftype vif_type, u32 version) 1651 { 1652 int i; 1653 1654 for (i = 0; i < n_channels; i++) { 1655 enum nl80211_band band = channels[i]->band; 1656 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1657 u32 n_aps_flag = 1658 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1659 channels[i]->hw_value); 1660 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band); 1661 1662 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1663 cfg->v2.channel_num = channels[i]->hw_value; 1664 if (cfg80211_channel_is_psc(channels[i])) 1665 cfg->flags = 0; 1666 1667 if (band == NL80211_BAND_6GHZ) { 1668 /* 6 GHz channels should only appear in a scan request 1669 * that has scan_6ghz set. The only exception is MLO 1670 * scan, which has to be passive. 1671 */ 1672 WARN_ON_ONCE(cfg->flags != 0); 1673 cfg->flags = 1674 cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE); 1675 } 1676 1677 cfg->v2.iter_count = 1; 1678 cfg->v2.iter_interval = 0; 1679 if (version < 17) 1680 cfg->v2.band = iwl_band; 1681 else 1682 cfg->flags |= cpu_to_le32((iwl_band << 1683 IWL_CHAN_CFG_FLAGS_BAND_POS)); 1684 } 1685 } 1686 1687 static void 1688 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, 1689 struct iwl_mvm_scan_params *params, 1690 struct iwl_scan_probe_params_v4 *pp) 1691 { 1692 int j, idex_s = 0, idex_b = 0; 1693 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1694 params->scan_6ghz_params; 1695 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, 1696 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); 1697 1698 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; 1699 j++) { 1700 if (!params->ssids[j].ssid_len) 1701 continue; 1702 1703 pp->short_ssid[idex_s] = 1704 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1705 params->ssids[j].ssid_len)); 1706 1707 if (hidden_supported) { 1708 pp->direct_scan[idex_s].id = WLAN_EID_SSID; 1709 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; 1710 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, 1711 params->ssids[j].ssid_len); 1712 } 1713 idex_s++; 1714 } 1715 1716 /* 1717 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1718 * collocated parameters. This might not be optimal, as this processing 1719 * does not (yet) correspond to the actual channels, so it is possible 1720 * that some entries would be left out. 1721 * 1722 * TODO: improve this logic. 1723 */ 1724 for (j = 0; j < params->n_6ghz_params; j++) { 1725 int k; 1726 1727 /* First, try to place the short SSID */ 1728 if (scan_6ghz_params[j].short_ssid_valid) { 1729 for (k = 0; k < idex_s; k++) { 1730 if (pp->short_ssid[k] == 1731 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1732 break; 1733 } 1734 1735 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1736 pp->short_ssid[idex_s++] = 1737 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1738 } 1739 } 1740 1741 /* try to place BSSID for the same entry */ 1742 for (k = 0; k < idex_b; k++) { 1743 if (!memcmp(&pp->bssid_array[k], 1744 scan_6ghz_params[j].bssid, ETH_ALEN)) 1745 break; 1746 } 1747 1748 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE && 1749 !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid), 1750 "scan: invalid BSSID at index %u, index_b=%u\n", 1751 j, idex_b)) { 1752 memcpy(&pp->bssid_array[idex_b++], 1753 scan_6ghz_params[j].bssid, ETH_ALEN); 1754 } 1755 } 1756 1757 pp->short_ssid_num = idex_s; 1758 pp->bssid_num = idex_b; 1759 } 1760 1761 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */ 1762 static u32 1763 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm, 1764 struct iwl_mvm_scan_params *params, 1765 u32 n_channels, 1766 struct iwl_scan_probe_params_v4 *pp, 1767 struct iwl_scan_channel_params_v7 *cp, 1768 enum nl80211_iftype vif_type, 1769 u32 version) 1770 { 1771 int i; 1772 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1773 params->scan_6ghz_params; 1774 u32 ch_cnt; 1775 1776 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { 1777 struct iwl_scan_channel_cfg_umac *cfg = 1778 &cp->channel_config[ch_cnt]; 1779 1780 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1781 u8 j, k, n_s_ssids = 0, n_bssids = 0; 1782 u8 max_s_ssids, max_bssids; 1783 bool force_passive = false, found = false, allow_passive = true, 1784 unsolicited_probe_on_chan = false, psc_no_listen = false; 1785 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 1786 1787 /* 1788 * Avoid performing passive scan on non PSC channels unless the 1789 * scan is specifically a passive scan, i.e., no SSIDs 1790 * configured in the scan command. 1791 */ 1792 if (!cfg80211_channel_is_psc(params->channels[i]) && 1793 !params->n_6ghz_params && params->n_ssids) 1794 continue; 1795 1796 cfg->v1.channel_num = params->channels[i]->hw_value; 1797 if (version < 17) 1798 cfg->v2.band = PHY_BAND_6; 1799 else 1800 cfg->flags |= cpu_to_le32(PHY_BAND_6 << 1801 IWL_CHAN_CFG_FLAGS_BAND_POS); 1802 1803 cfg->v5.iter_count = 1; 1804 cfg->v5.iter_interval = 0; 1805 1806 for (j = 0; j < params->n_6ghz_params; j++) { 1807 s8 tmp_psd_20; 1808 1809 if (!(scan_6ghz_params[j].channel_idx == i)) 1810 continue; 1811 1812 unsolicited_probe_on_chan |= 1813 scan_6ghz_params[j].unsolicited_probe; 1814 1815 /* Use the highest PSD value allowed as advertised by 1816 * APs for this channel 1817 */ 1818 tmp_psd_20 = scan_6ghz_params[j].psd_20; 1819 if (tmp_psd_20 != 1820 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED && 1821 (psd_20 == 1822 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED || 1823 psd_20 < tmp_psd_20)) 1824 psd_20 = tmp_psd_20; 1825 1826 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1827 } 1828 1829 /* 1830 * In the following cases apply passive scan: 1831 * 1. Non fragmented scan: 1832 * - PSC channel with NO_LISTEN_FLAG on should be treated 1833 * like non PSC channel 1834 * - Non PSC channel with more than 3 short SSIDs or more 1835 * than 9 BSSIDs. 1836 * - Non PSC Channel with unsolicited probe response and 1837 * more than 2 short SSIDs or more than 6 BSSIDs. 1838 * - PSC channel with more than 2 short SSIDs or more than 1839 * 6 BSSIDs. 1840 * 3. Fragmented scan: 1841 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1842 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1843 * - Non PSC channel with unsolicited probe response and 1844 * more than 1 SSID or more than 3 BSSIDs. 1845 */ 1846 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1847 if (!cfg80211_channel_is_psc(params->channels[i]) || 1848 psc_no_listen) { 1849 if (unsolicited_probe_on_chan) { 1850 max_s_ssids = 2; 1851 max_bssids = 6; 1852 } else { 1853 max_s_ssids = 3; 1854 max_bssids = 9; 1855 } 1856 } else { 1857 max_s_ssids = 2; 1858 max_bssids = 6; 1859 } 1860 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1861 max_s_ssids = 1; 1862 max_bssids = 3; 1863 } else { 1864 if (unsolicited_probe_on_chan) { 1865 max_s_ssids = 1; 1866 max_bssids = 3; 1867 } else { 1868 max_s_ssids = 2; 1869 max_bssids = 6; 1870 } 1871 } 1872 1873 /* 1874 * The optimize the scan time, i.e., reduce the scan dwell time 1875 * on each channel, the below logic tries to set 3 direct BSSID 1876 * probe requests for each broadcast probe request with a short 1877 * SSID. 1878 * TODO: improve this logic 1879 */ 1880 for (j = 0; j < params->n_6ghz_params; j++) { 1881 if (!(scan_6ghz_params[j].channel_idx == i)) 1882 continue; 1883 1884 found = false; 1885 1886 for (k = 0; 1887 k < pp->short_ssid_num && n_s_ssids < max_s_ssids; 1888 k++) { 1889 if (!scan_6ghz_params[j].unsolicited_probe && 1890 le32_to_cpu(pp->short_ssid[k]) == 1891 scan_6ghz_params[j].short_ssid) { 1892 /* Relevant short SSID bit set */ 1893 if (s_ssid_bitmap & BIT(k)) { 1894 found = true; 1895 break; 1896 } 1897 1898 /* 1899 * Prefer creating BSSID entries unless 1900 * the short SSID probe can be done in 1901 * the same channel dwell iteration. 1902 * 1903 * We also need to create a short SSID 1904 * entry for any hidden AP. 1905 */ 1906 if (3 * n_s_ssids > n_bssids && 1907 !pp->direct_scan[k].len) 1908 break; 1909 1910 /* Hidden AP, cannot do passive scan */ 1911 if (pp->direct_scan[k].len) 1912 allow_passive = false; 1913 1914 s_ssid_bitmap |= BIT(k); 1915 n_s_ssids++; 1916 found = true; 1917 break; 1918 } 1919 } 1920 1921 if (found) 1922 continue; 1923 1924 for (k = 0; k < pp->bssid_num; k++) { 1925 if (!memcmp(&pp->bssid_array[k], 1926 scan_6ghz_params[j].bssid, 1927 ETH_ALEN)) { 1928 if (!(bssid_bitmap & BIT(k))) { 1929 if (n_bssids < max_bssids) { 1930 bssid_bitmap |= BIT(k); 1931 n_bssids++; 1932 } else { 1933 force_passive = TRUE; 1934 } 1935 } 1936 break; 1937 } 1938 } 1939 } 1940 1941 if (cfg80211_channel_is_psc(params->channels[i]) && 1942 psc_no_listen) 1943 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1944 1945 if (unsolicited_probe_on_chan) 1946 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1947 1948 if ((allow_passive && force_passive) || 1949 (!(bssid_bitmap | s_ssid_bitmap) && 1950 !cfg80211_channel_is_psc(params->channels[i]))) 1951 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1952 else 1953 flags |= bssid_bitmap | (s_ssid_bitmap << 16); 1954 1955 cfg->flags |= cpu_to_le32(flags); 1956 if (version >= 17) 1957 cfg->v5.psd_20 = psd_20; 1958 1959 ch_cnt++; 1960 } 1961 1962 if (params->n_channels > ch_cnt) 1963 IWL_DEBUG_SCAN(mvm, 1964 "6GHz: reducing number channels: (%u->%u)\n", 1965 params->n_channels, ch_cnt); 1966 1967 return ch_cnt; 1968 } 1969 1970 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1971 struct iwl_mvm_scan_params *params, 1972 struct ieee80211_vif *vif) 1973 { 1974 u8 flags = 0; 1975 1976 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1977 1978 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1979 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1980 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1981 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1982 1983 /* set fragmented ebs for fragmented scan on HB channels */ 1984 if ((!iwl_mvm_is_cdb_supported(mvm) && 1985 iwl_mvm_is_scan_fragmented(params->type)) || 1986 (iwl_mvm_is_cdb_supported(mvm) && 1987 iwl_mvm_is_scan_fragmented(params->hb_type))) 1988 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1989 1990 /* 1991 * force EBS in case the scan is a fragmented and there is a need to take P2P 1992 * GO operation into consideration during scan operation. 1993 */ 1994 if ((!iwl_mvm_is_cdb_supported(mvm) && 1995 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || 1996 (iwl_mvm_is_cdb_supported(mvm) && 1997 iwl_mvm_is_scan_fragmented(params->hb_type) && 1998 params->respect_p2p_go_hb)) { 1999 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); 2000 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; 2001 } 2002 2003 return flags; 2004 } 2005 2006 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, 2007 struct iwl_mvm_scan_params *params, 2008 struct ieee80211_vif *vif) 2009 { 2010 struct ieee80211_supported_band *sband = 2011 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2012 u32 n_disabled, i; 2013 2014 params->enable_6ghz_passive = false; 2015 2016 if (params->scan_6ghz) 2017 return; 2018 2019 if (!fw_has_capa(&mvm->fw->ucode_capa, 2020 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { 2021 IWL_DEBUG_SCAN(mvm, 2022 "6GHz passive scan: Not supported by FW\n"); 2023 return; 2024 } 2025 2026 /* 6GHz passive scan allowed only on station interface */ 2027 if (vif->type != NL80211_IFTYPE_STATION) { 2028 IWL_DEBUG_SCAN(mvm, 2029 "6GHz passive scan: not station interface\n"); 2030 return; 2031 } 2032 2033 /* 2034 * 6GHz passive scan is allowed in a defined time interval following HW 2035 * reset or resume flow, or while not associated and a large interval 2036 * has passed since the last 6GHz passive scan. 2037 */ 2038 if ((vif->cfg.assoc || 2039 time_after(mvm->last_6ghz_passive_scan_jiffies + 2040 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && 2041 (time_before(mvm->last_reset_or_resume_time_jiffies + 2042 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), 2043 jiffies))) { 2044 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", 2045 vif->cfg.assoc ? "associated" : 2046 "timeout did not expire"); 2047 return; 2048 } 2049 2050 /* not enough channels in the regular scan request */ 2051 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { 2052 IWL_DEBUG_SCAN(mvm, 2053 "6GHz passive scan: not enough channels\n"); 2054 return; 2055 } 2056 2057 for (i = 0; i < params->n_ssids; i++) { 2058 if (!params->ssids[i].ssid_len) 2059 break; 2060 } 2061 2062 /* not a wildcard scan, so cannot enable passive 6GHz scan */ 2063 if (i == params->n_ssids) { 2064 IWL_DEBUG_SCAN(mvm, 2065 "6GHz passive scan: no wildcard SSID\n"); 2066 return; 2067 } 2068 2069 if (!sband || !sband->n_channels) { 2070 IWL_DEBUG_SCAN(mvm, 2071 "6GHz passive scan: no 6GHz channels\n"); 2072 return; 2073 } 2074 2075 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { 2076 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) 2077 n_disabled++; 2078 } 2079 2080 /* 2081 * Not all the 6GHz channels are disabled, so no need for 6GHz passive 2082 * scan 2083 */ 2084 if (n_disabled != sband->n_channels) { 2085 IWL_DEBUG_SCAN(mvm, 2086 "6GHz passive scan: 6GHz channels enabled\n"); 2087 return; 2088 } 2089 2090 /* all conditions to enable 6ghz passive scan are satisfied */ 2091 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); 2092 params->enable_6ghz_passive = true; 2093 } 2094 2095 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 2096 struct iwl_mvm_scan_params *params, 2097 struct ieee80211_vif *vif, 2098 int type) 2099 { 2100 u16 flags = 0; 2101 2102 /* 2103 * If no direct SSIDs are provided perform a passive scan. Otherwise, 2104 * if there is a single SSID which is not the broadcast SSID, assume 2105 * that the scan is intended for roaming purposes and thus enable Rx on 2106 * all chains to improve chances of hearing the beacons/probe responses. 2107 */ 2108 if (params->n_ssids == 0) 2109 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 2110 else if (params->n_ssids == 1 && params->ssids[0].ssid_len) 2111 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 2112 2113 if (iwl_mvm_is_scan_fragmented(params->type)) 2114 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 2115 2116 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 2117 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 2118 2119 if (params->pass_all) 2120 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 2121 else 2122 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 2123 2124 if (!iwl_mvm_is_regular_scan(params)) 2125 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 2126 2127 if (params->iter_notif || 2128 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2129 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 2130 2131 if (IWL_MVM_ADWELL_ENABLE) 2132 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 2133 2134 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2135 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 2136 2137 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2138 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 2139 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 2140 2141 if (params->enable_6ghz_passive) 2142 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; 2143 2144 if (iwl_mvm_is_oce_supported(mvm) && 2145 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | 2146 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | 2147 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) 2148 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; 2149 2150 return flags; 2151 } 2152 2153 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, 2154 struct iwl_mvm_scan_params *params, 2155 struct ieee80211_vif *vif, int type, 2156 u16 gen_flags) 2157 { 2158 u8 flags = 0; 2159 2160 if (iwl_mvm_is_cdb_supported(mvm)) { 2161 if (params->respect_p2p_go) 2162 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; 2163 if (params->respect_p2p_go_hb) 2164 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2165 } else { 2166 if (params->respect_p2p_go) 2167 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | 2168 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; 2169 } 2170 2171 if (params->scan_6ghz && 2172 fw_has_capa(&mvm->fw->ucode_capa, 2173 IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT)) 2174 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT; 2175 2176 /* Passive and AP interface -> ACS (automatic channel selection) */ 2177 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE && 2178 ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP && 2179 iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 2180 0) >= 1) 2181 flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS; 2182 2183 return flags; 2184 } 2185 2186 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 2187 struct iwl_mvm_scan_params *params, 2188 struct ieee80211_vif *vif) 2189 { 2190 u16 flags = 0; 2191 2192 if (params->n_ssids == 0) 2193 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 2194 2195 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 2196 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 2197 2198 if (iwl_mvm_is_scan_fragmented(params->type)) 2199 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 2200 2201 if (iwl_mvm_is_cdb_supported(mvm) && 2202 iwl_mvm_is_scan_fragmented(params->hb_type)) 2203 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 2204 2205 if (iwl_mvm_rrm_scan_needed(mvm) && 2206 fw_has_capa(&mvm->fw->ucode_capa, 2207 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 2208 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 2209 2210 if (params->pass_all) 2211 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 2212 else 2213 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 2214 2215 if (!iwl_mvm_is_regular_scan(params)) 2216 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 2217 2218 if (params->iter_notif) 2219 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2220 2221 #ifdef CONFIG_IWLWIFI_DEBUGFS 2222 if (mvm->scan_iter_notif_enabled) 2223 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2224 #endif 2225 2226 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 2227 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 2228 2229 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 2230 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 2231 2232 /* 2233 * Extended dwell is relevant only for low band to start with, as it is 2234 * being used for social channles only (1, 6, 11), so we can check 2235 * only scan type on low band also for CDB. 2236 */ 2237 if (iwl_mvm_is_regular_scan(params) && 2238 vif->type != NL80211_IFTYPE_P2P_DEVICE && 2239 !iwl_mvm_is_scan_fragmented(params->type) && 2240 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 2241 !iwl_mvm_is_oce_supported(mvm)) 2242 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 2243 2244 if (iwl_mvm_is_oce_supported(mvm)) { 2245 if ((params->flags & 2246 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 2247 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 2248 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 2249 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 2250 * the same bit, we need to make sure that we use this bit here 2251 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 2252 * used. */ 2253 if ((params->flags & 2254 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 2255 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 2256 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 2257 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 2258 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 2259 } 2260 2261 return flags; 2262 } 2263 2264 static int 2265 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 2266 struct iwl_scan_umac_schedule *schedule, 2267 __le16 *delay) 2268 { 2269 int i; 2270 if (WARN_ON(!params->n_scan_plans || 2271 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2272 return -EINVAL; 2273 2274 for (i = 0; i < params->n_scan_plans; i++) { 2275 struct cfg80211_sched_scan_plan *scan_plan = 2276 ¶ms->scan_plans[i]; 2277 2278 schedule[i].iter_count = scan_plan->iterations; 2279 schedule[i].interval = 2280 cpu_to_le16(scan_plan->interval); 2281 } 2282 2283 /* 2284 * If the number of iterations of the last scan plan is set to 2285 * zero, it should run infinitely. However, this is not always the case. 2286 * For example, when regular scan is requested the driver sets one scan 2287 * plan with one iteration. 2288 */ 2289 if (!schedule[params->n_scan_plans - 1].iter_count) 2290 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2291 2292 *delay = cpu_to_le16(params->delay); 2293 2294 return 0; 2295 } 2296 2297 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2298 struct iwl_mvm_scan_params *params, 2299 int type, int uid) 2300 { 2301 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2302 struct iwl_scan_umac_chan_param *chan_param; 2303 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2304 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2305 mvm->fw->ucode_capa.n_scan_channels; 2306 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2307 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2308 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2309 struct iwl_ssid_ie *direct_scan; 2310 int ret = 0; 2311 u32 ssid_bitmap = 0; 2312 u8 channel_flags = 0; 2313 u16 gen_flags; 2314 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2315 2316 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2317 2318 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2319 2320 cmd->uid = cpu_to_le32(uid); 2321 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2322 cmd->general_flags = cpu_to_le16(gen_flags); 2323 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2324 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2325 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2326 IWL_SCAN_NUM_OF_FRAGS; 2327 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2328 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2329 IWL_SCAN_NUM_OF_FRAGS; 2330 2331 cmd->v8.general_flags2 = 2332 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2333 } 2334 2335 cmd->scan_start_mac_id = scan_vif->id; 2336 2337 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2338 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2339 2340 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2341 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2342 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2343 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2344 2345 /* set fragmented ebs for fragmented scan on HB channels */ 2346 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2347 if (gen_flags & 2348 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2349 (!iwl_mvm_is_cdb_supported(mvm) && 2350 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2351 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2352 } 2353 } 2354 2355 chan_param->flags = channel_flags; 2356 chan_param->count = params->n_channels; 2357 2358 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2359 &tail_v2->delay); 2360 if (ret) 2361 return ret; 2362 2363 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2364 tail_v2->preq = params->preq; 2365 direct_scan = tail_v2->direct_scan; 2366 } else { 2367 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2368 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2369 ¶ms->preq); 2370 direct_scan = tail_v1->direct_scan; 2371 } 2372 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2373 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2374 params->n_channels, ssid_bitmap, 2375 cmd_data); 2376 return 0; 2377 } 2378 2379 static void 2380 iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm, 2381 struct iwl_mvm_scan_params *params, 2382 struct ieee80211_vif *vif, 2383 struct iwl_scan_general_params_v11 *gp, 2384 u16 gen_flags, u8 gen_flags2, 2385 u32 version) 2386 { 2387 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2388 2389 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); 2390 2391 IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n", 2392 gen_flags, gen_flags2); 2393 2394 gp->flags = cpu_to_le16(gen_flags); 2395 gp->flags2 = gen_flags2; 2396 2397 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2398 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2399 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2400 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2401 2402 mvm->scan_link_id = 0; 2403 2404 if (version < 16) { 2405 gp->scan_start_mac_or_link_id = scan_vif->id; 2406 } else { 2407 struct iwl_mvm_vif_link_info *link_info = 2408 scan_vif->link[params->tsf_report_link_id]; 2409 2410 mvm->scan_link_id = params->tsf_report_link_id; 2411 if (!WARN_ON(!link_info)) 2412 gp->scan_start_mac_or_link_id = link_info->fw_link_id; 2413 } 2414 } 2415 2416 static void 2417 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2418 struct iwl_scan_probe_params_v3 *pp) 2419 { 2420 pp->preq = params->preq; 2421 pp->ssid_num = params->n_ssids; 2422 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2423 } 2424 2425 static void 2426 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2427 struct iwl_scan_probe_params_v4 *pp, 2428 u32 *bitmap_ssid) 2429 { 2430 pp->preq = params->preq; 2431 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2432 } 2433 2434 static void 2435 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2436 struct iwl_mvm_scan_params *params, 2437 struct ieee80211_vif *vif, 2438 struct iwl_scan_channel_params_v4 *cp, 2439 u32 channel_cfg_flags) 2440 { 2441 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2442 cp->count = params->n_channels; 2443 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2444 2445 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2446 params->n_channels, 2447 channel_cfg_flags, 2448 vif->type); 2449 } 2450 2451 static void 2452 iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm, 2453 struct iwl_mvm_scan_params *params, 2454 struct ieee80211_vif *vif, 2455 struct iwl_scan_channel_params_v7 *cp, 2456 u32 channel_cfg_flags, 2457 u32 version) 2458 { 2459 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2460 cp->count = params->n_channels; 2461 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2462 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2463 2464 iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp, 2465 params->n_channels, 2466 channel_cfg_flags, 2467 vif->type, version); 2468 2469 if (params->enable_6ghz_passive) { 2470 struct ieee80211_supported_band *sband = 2471 &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; 2472 u32 i; 2473 2474 for (i = 0; i < sband->n_channels; i++) { 2475 struct ieee80211_channel *channel = 2476 &sband->channels[i]; 2477 2478 struct iwl_scan_channel_cfg_umac *cfg = 2479 &cp->channel_config[cp->count]; 2480 2481 if (!cfg80211_channel_is_psc(channel)) 2482 continue; 2483 2484 cfg->v5.channel_num = channel->hw_value; 2485 cfg->v5.iter_count = 1; 2486 cfg->v5.iter_interval = 0; 2487 2488 if (version < 17) { 2489 cfg->flags = 0; 2490 cfg->v2.band = PHY_BAND_6; 2491 } else { 2492 cfg->flags = cpu_to_le32(PHY_BAND_6 << 2493 IWL_CHAN_CFG_FLAGS_BAND_POS); 2494 cfg->v5.psd_20 = 2495 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; 2496 } 2497 cp->count++; 2498 } 2499 } 2500 } 2501 2502 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2503 struct iwl_mvm_scan_params *params, int type, 2504 int uid) 2505 { 2506 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2507 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2508 int ret; 2509 u16 gen_flags; 2510 2511 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2512 cmd->uid = cpu_to_le32(uid); 2513 2514 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2515 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2516 &scan_p->general_params, 2517 gen_flags, 0, 12); 2518 2519 ret = iwl_mvm_fill_scan_sched_params(params, 2520 scan_p->periodic_params.schedule, 2521 &scan_p->periodic_params.delay); 2522 if (ret) 2523 return ret; 2524 2525 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2526 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2527 &scan_p->channel_params, 0); 2528 2529 return 0; 2530 } 2531 2532 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm, 2533 struct ieee80211_vif *vif, 2534 struct iwl_mvm_scan_params *params, 2535 int type, int uid, u32 version) 2536 { 2537 struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd; 2538 struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params; 2539 struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params; 2540 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2541 int ret; 2542 u16 gen_flags; 2543 u8 gen_flags2; 2544 u32 bitmap_ssid = 0; 2545 2546 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 2547 cmd->uid = cpu_to_le32(uid); 2548 2549 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2550 2551 if (version >= 15) 2552 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type, 2553 gen_flags); 2554 else 2555 gen_flags2 = 0; 2556 2557 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, 2558 &scan_p->general_params, 2559 gen_flags, gen_flags2, version); 2560 2561 ret = iwl_mvm_fill_scan_sched_params(params, 2562 scan_p->periodic_params.schedule, 2563 &scan_p->periodic_params.delay); 2564 if (ret) 2565 return ret; 2566 2567 if (!params->scan_6ghz) { 2568 iwl_mvm_scan_umac_fill_probe_p_v4(params, 2569 &scan_p->probe_params, 2570 &bitmap_ssid); 2571 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif, 2572 &scan_p->channel_params, 2573 bitmap_ssid, 2574 version); 2575 return 0; 2576 } else { 2577 pb->preq = params->preq; 2578 } 2579 2580 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2581 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2582 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2583 2584 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); 2585 2586 cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params, 2587 params->n_channels, 2588 pb, cp, vif->type, 2589 version); 2590 if (!cp->count) 2591 return -EINVAL; 2592 2593 if (!params->n_ssids || 2594 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2595 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2596 2597 return 0; 2598 } 2599 2600 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2601 struct iwl_mvm_scan_params *params, int type, 2602 int uid) 2603 { 2604 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); 2605 } 2606 2607 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2608 struct iwl_mvm_scan_params *params, int type, 2609 int uid) 2610 { 2611 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); 2612 } 2613 2614 static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2615 struct iwl_mvm_scan_params *params, int type, 2616 int uid) 2617 { 2618 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16); 2619 } 2620 2621 static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2622 struct iwl_mvm_scan_params *params, int type, 2623 int uid) 2624 { 2625 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17); 2626 } 2627 2628 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2629 { 2630 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2631 } 2632 2633 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2634 { 2635 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2636 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2637 2638 /* This looks a bit arbitrary, but the idea is that if we run 2639 * out of possible simultaneous scans and the userspace is 2640 * trying to run a scan type that is already running, we 2641 * return -EBUSY. But if the userspace wants to start a 2642 * different type of scan, we stop the opposite type to make 2643 * space for the new request. The reason is backwards 2644 * compatibility with old wpa_supplicant that wouldn't stop a 2645 * scheduled scan before starting a normal scan. 2646 */ 2647 2648 /* FW supports only a single periodic scan */ 2649 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2650 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2651 return -EBUSY; 2652 2653 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2654 return 0; 2655 2656 /* Use a switch, even though this is a bitmask, so that more 2657 * than one bits set will fall in default and we will warn. 2658 */ 2659 switch (type) { 2660 case IWL_MVM_SCAN_REGULAR: 2661 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2662 return -EBUSY; 2663 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2664 case IWL_MVM_SCAN_SCHED: 2665 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2666 return -EBUSY; 2667 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2668 case IWL_MVM_SCAN_NETDETECT: 2669 /* For non-unified images, there's no need to stop 2670 * anything for net-detect since the firmware is 2671 * restarted anyway. This way, any sched scans that 2672 * were running will be restarted when we resume. 2673 */ 2674 if (!unified_image) 2675 return 0; 2676 2677 /* If this is a unified image and we ran out of scans, 2678 * we need to stop something. Prefer stopping regular 2679 * scans, because the results are useless at this 2680 * point, and we should be able to keep running 2681 * another scheduled scan while suspended. 2682 */ 2683 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2684 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2685 true); 2686 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2687 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2688 true); 2689 /* Something is wrong if no scan was running but we 2690 * ran out of scans. 2691 */ 2692 fallthrough; 2693 default: 2694 WARN_ON(1); 2695 break; 2696 } 2697 2698 return -EIO; 2699 } 2700 2701 #define SCAN_TIMEOUT 30000 2702 2703 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2704 { 2705 struct delayed_work *delayed_work = to_delayed_work(work); 2706 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2707 scan_timeout_dwork); 2708 2709 IWL_ERR(mvm, "regular scan timed out\n"); 2710 2711 iwl_force_nmi(mvm->trans); 2712 } 2713 2714 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2715 struct iwl_mvm_scan_params *params, 2716 struct ieee80211_vif *vif) 2717 { 2718 if (iwl_mvm_is_cdb_supported(mvm)) { 2719 params->type = 2720 iwl_mvm_get_scan_type_band(mvm, vif, 2721 NL80211_BAND_2GHZ); 2722 params->hb_type = 2723 iwl_mvm_get_scan_type_band(mvm, vif, 2724 NL80211_BAND_5GHZ); 2725 } else { 2726 params->type = iwl_mvm_get_scan_type(mvm, vif); 2727 } 2728 } 2729 2730 struct iwl_scan_umac_handler { 2731 u8 version; 2732 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2733 struct iwl_mvm_scan_params *params, int type, int uid); 2734 }; 2735 2736 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2737 .version = _ver, \ 2738 .handler = iwl_mvm_scan_umac_v##_ver, \ 2739 } 2740 2741 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2742 /* set the newest version first to shorten the list traverse time */ 2743 IWL_SCAN_UMAC_HANDLER(17), 2744 IWL_SCAN_UMAC_HANDLER(16), 2745 IWL_SCAN_UMAC_HANDLER(15), 2746 IWL_SCAN_UMAC_HANDLER(14), 2747 IWL_SCAN_UMAC_HANDLER(12), 2748 }; 2749 2750 static void iwl_mvm_mei_scan_work(struct work_struct *wk) 2751 { 2752 struct iwl_mei_scan_filter *scan_filter = 2753 container_of(wk, struct iwl_mei_scan_filter, scan_work); 2754 struct iwl_mvm *mvm = 2755 container_of(scan_filter, struct iwl_mvm, mei_scan_filter); 2756 struct iwl_mvm_csme_conn_info *info; 2757 struct sk_buff *skb; 2758 u8 bssid[ETH_ALEN]; 2759 2760 mutex_lock(&mvm->mutex); 2761 info = iwl_mvm_get_csme_conn_info(mvm); 2762 memcpy(bssid, info->conn_info.bssid, ETH_ALEN); 2763 mutex_unlock(&mvm->mutex); 2764 2765 while ((skb = skb_dequeue(&scan_filter->scan_res))) { 2766 struct ieee80211_mgmt *mgmt = (void *)skb->data; 2767 2768 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) 2769 ieee80211_rx_irqsafe(mvm->hw, skb); 2770 else 2771 kfree_skb(skb); 2772 } 2773 } 2774 2775 void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) 2776 { 2777 skb_queue_head_init(&mei_scan_filter->scan_res); 2778 INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); 2779 } 2780 2781 /* In case CSME is connected and has link protection set, this function will 2782 * override the scan request to scan only the associated channel and only for 2783 * the associated SSID. 2784 */ 2785 static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, 2786 struct iwl_mvm_scan_params *params) 2787 { 2788 struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); 2789 struct iwl_mei_conn_info *conn_info; 2790 struct ieee80211_channel *chan; 2791 int scan_iters, i; 2792 2793 if (!info) { 2794 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); 2795 return; 2796 } 2797 2798 conn_info = &info->conn_info; 2799 if (!info->conn_info.lp_state || !info->conn_info.ssid_len) 2800 return; 2801 2802 if (!params->n_channels || !params->n_ssids) 2803 return; 2804 2805 mvm->mei_scan_filter.is_mei_limited_scan = true; 2806 2807 chan = ieee80211_get_channel(mvm->hw->wiphy, 2808 ieee80211_channel_to_frequency(conn_info->channel, 2809 conn_info->band)); 2810 if (!chan) { 2811 IWL_DEBUG_SCAN(mvm, 2812 "Failed to get CSME channel (chan=%u band=%u)\n", 2813 conn_info->channel, conn_info->band); 2814 return; 2815 } 2816 2817 /* The mei filtered scan must find the AP, otherwise CSME will 2818 * take the NIC ownership. Add several iterations on the channel to 2819 * make the scan more robust. 2820 */ 2821 scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); 2822 params->n_channels = scan_iters; 2823 for (i = 0; i < scan_iters; i++) 2824 params->channels[i] = chan; 2825 2826 IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); 2827 2828 params->n_ssids = 1; 2829 params->ssids[0].ssid_len = conn_info->ssid_len; 2830 memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); 2831 } 2832 2833 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2834 struct ieee80211_vif *vif, 2835 struct iwl_host_cmd *hcmd, 2836 struct iwl_mvm_scan_params *params, 2837 int type) 2838 { 2839 int uid, i, err; 2840 u8 scan_ver; 2841 2842 lockdep_assert_held(&mvm->mutex); 2843 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); 2844 2845 iwl_mvm_mei_limited_scan(mvm, params); 2846 2847 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2848 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2849 2850 return iwl_mvm_scan_lmac(mvm, vif, params); 2851 } 2852 2853 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2854 if (uid < 0) 2855 return uid; 2856 2857 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); 2858 2859 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 2860 IWL_FW_CMD_VER_UNKNOWN); 2861 2862 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2863 const struct iwl_scan_umac_handler *ver_handler = 2864 &iwl_scan_umac_handlers[i]; 2865 2866 if (ver_handler->version != scan_ver) 2867 continue; 2868 2869 err = ver_handler->handler(mvm, vif, params, type, uid); 2870 return err ? : uid; 2871 } 2872 2873 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2874 if (err) 2875 return err; 2876 2877 return uid; 2878 } 2879 2880 struct iwl_mvm_scan_respect_p2p_go_iter_data { 2881 struct ieee80211_vif *current_vif; 2882 bool p2p_go; 2883 enum nl80211_band band; 2884 }; 2885 2886 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, 2887 struct ieee80211_vif *vif) 2888 { 2889 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; 2890 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2891 2892 /* exclude the given vif */ 2893 if (vif == data->current_vif) 2894 return; 2895 2896 if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) { 2897 u32 link_id; 2898 2899 for (link_id = 0; 2900 link_id < ARRAY_SIZE(mvmvif->link); 2901 link_id++) { 2902 struct iwl_mvm_vif_link_info *link = 2903 mvmvif->link[link_id]; 2904 2905 if (link && link->phy_ctxt->id < NUM_PHY_CTX && 2906 (data->band == NUM_NL80211_BANDS || 2907 link->phy_ctxt->channel->band == data->band)) { 2908 data->p2p_go = true; 2909 break; 2910 } 2911 } 2912 } 2913 } 2914 2915 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2916 struct ieee80211_vif *vif, 2917 bool low_latency, 2918 enum nl80211_band band) 2919 { 2920 struct iwl_mvm_scan_respect_p2p_go_iter_data data = { 2921 .current_vif = vif, 2922 .p2p_go = false, 2923 .band = band, 2924 }; 2925 2926 if (!low_latency) 2927 return false; 2928 2929 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 2930 IEEE80211_IFACE_ITER_NORMAL, 2931 iwl_mvm_scan_respect_p2p_go_iter, 2932 &data); 2933 2934 return data.p2p_go; 2935 } 2936 2937 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, 2938 struct ieee80211_vif *vif, 2939 enum nl80211_band band) 2940 { 2941 bool low_latency = iwl_mvm_low_latency_band(mvm, band); 2942 2943 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); 2944 } 2945 2946 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, 2947 struct ieee80211_vif *vif) 2948 { 2949 bool low_latency = iwl_mvm_low_latency(mvm); 2950 2951 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, 2952 NUM_NL80211_BANDS); 2953 } 2954 2955 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, 2956 struct iwl_mvm_scan_params *params, 2957 struct ieee80211_vif *vif) 2958 { 2959 if (iwl_mvm_is_cdb_supported(mvm)) { 2960 params->respect_p2p_go = 2961 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2962 NL80211_BAND_2GHZ); 2963 params->respect_p2p_go_hb = 2964 iwl_mvm_get_respect_p2p_go_band(mvm, vif, 2965 NL80211_BAND_5GHZ); 2966 } else { 2967 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); 2968 } 2969 } 2970 2971 static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm, 2972 struct ieee80211_vif *vif, 2973 struct cfg80211_scan_request *req, 2974 struct ieee80211_scan_ies *ies, 2975 int type) 2976 { 2977 struct iwl_host_cmd hcmd = { 2978 .len = { iwl_mvm_scan_size(mvm), }, 2979 .data = { mvm->scan_cmd, }, 2980 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2981 }; 2982 struct iwl_mvm_scan_params params = {}; 2983 int ret, uid; 2984 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2985 2986 lockdep_assert_held(&mvm->mutex); 2987 2988 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2989 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2990 return -EBUSY; 2991 } 2992 2993 ret = iwl_mvm_check_running_scans(mvm, type); 2994 if (ret) 2995 return ret; 2996 2997 /* we should have failed registration if scan_cmd was NULL */ 2998 if (WARN_ON(!mvm->scan_cmd)) 2999 return -ENOMEM; 3000 3001 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 3002 return -ENOBUFS; 3003 3004 params.n_ssids = req->n_ssids; 3005 params.flags = req->flags; 3006 params.n_channels = req->n_channels; 3007 params.delay = 0; 3008 params.ssids = req->ssids; 3009 params.channels = req->channels; 3010 params.mac_addr = req->mac_addr; 3011 params.mac_addr_mask = req->mac_addr_mask; 3012 params.no_cck = req->no_cck; 3013 params.pass_all = true; 3014 params.n_match_sets = 0; 3015 params.match_sets = NULL; 3016 ether_addr_copy(params.bssid, req->bssid); 3017 3018 params.scan_plans = &scan_plan; 3019 params.n_scan_plans = 1; 3020 3021 params.n_6ghz_params = req->n_6ghz_params; 3022 params.scan_6ghz_params = req->scan_6ghz_params; 3023 params.scan_6ghz = req->scan_6ghz; 3024 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3025 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3026 3027 if (req->duration) 3028 params.iter_notif = true; 3029 3030 params.tsf_report_link_id = req->tsf_report_link_id; 3031 if (params.tsf_report_link_id < 0) { 3032 if (vif->active_links) 3033 params.tsf_report_link_id = __ffs(vif->active_links); 3034 else 3035 params.tsf_report_link_id = 0; 3036 } 3037 3038 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3039 3040 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); 3041 3042 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3043 3044 if (uid < 0) 3045 return uid; 3046 3047 iwl_mvm_pause_tcm(mvm, false); 3048 3049 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3050 if (ret) { 3051 /* If the scan failed, it usually means that the FW was unable 3052 * to allocate the time events. Warn on it, but maybe we 3053 * should try to send the command again with different params. 3054 */ 3055 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 3056 iwl_mvm_resume_tcm(mvm); 3057 return ret; 3058 } 3059 3060 IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n", 3061 type, uid); 3062 3063 mvm->scan_uid_status[uid] = type; 3064 mvm->scan_status |= type; 3065 3066 if (type == IWL_MVM_SCAN_REGULAR) { 3067 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 3068 schedule_delayed_work(&mvm->scan_timeout_dwork, 3069 msecs_to_jiffies(SCAN_TIMEOUT)); 3070 } 3071 3072 if (params.enable_6ghz_passive) 3073 mvm->last_6ghz_passive_scan_jiffies = jiffies; 3074 3075 return 0; 3076 } 3077 3078 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 3079 struct cfg80211_scan_request *req, 3080 struct ieee80211_scan_ies *ies) 3081 { 3082 return _iwl_mvm_single_scan_start(mvm, vif, req, ies, 3083 IWL_MVM_SCAN_REGULAR); 3084 } 3085 3086 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 3087 struct ieee80211_vif *vif, 3088 struct cfg80211_sched_scan_request *req, 3089 struct ieee80211_scan_ies *ies, 3090 int type) 3091 { 3092 struct iwl_host_cmd hcmd = { 3093 .len = { iwl_mvm_scan_size(mvm), }, 3094 .data = { mvm->scan_cmd, }, 3095 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 3096 }; 3097 struct iwl_mvm_scan_params params = {}; 3098 int ret, uid; 3099 int i, j; 3100 bool non_psc_included = false; 3101 3102 lockdep_assert_held(&mvm->mutex); 3103 3104 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 3105 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 3106 return -EBUSY; 3107 } 3108 3109 ret = iwl_mvm_check_running_scans(mvm, type); 3110 if (ret) 3111 return ret; 3112 3113 /* we should have failed registration if scan_cmd was NULL */ 3114 if (WARN_ON(!mvm->scan_cmd)) 3115 return -ENOMEM; 3116 3117 3118 params.n_ssids = req->n_ssids; 3119 params.flags = req->flags; 3120 params.n_channels = req->n_channels; 3121 params.ssids = req->ssids; 3122 params.channels = req->channels; 3123 params.mac_addr = req->mac_addr; 3124 params.mac_addr_mask = req->mac_addr_mask; 3125 params.no_cck = false; 3126 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 3127 params.n_match_sets = req->n_match_sets; 3128 params.match_sets = req->match_sets; 3129 eth_broadcast_addr(params.bssid); 3130 if (!req->n_scan_plans) 3131 return -EINVAL; 3132 3133 params.n_scan_plans = req->n_scan_plans; 3134 params.scan_plans = req->scan_plans; 3135 3136 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 3137 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); 3138 3139 /* In theory, LMAC scans can handle a 32-bit delay, but since 3140 * waiting for over 18 hours to start the scan is a bit silly 3141 * and to keep it aligned with UMAC scans (which only support 3142 * 16-bit delays), trim it down to 16-bits. 3143 */ 3144 if (req->delay > U16_MAX) { 3145 IWL_DEBUG_SCAN(mvm, 3146 "delay value is > 16-bits, set to max possible\n"); 3147 params.delay = U16_MAX; 3148 } else { 3149 params.delay = req->delay; 3150 } 3151 3152 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 3153 if (ret) 3154 return ret; 3155 3156 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 3157 3158 /* for 6 GHZ band only PSC channels need to be added */ 3159 for (i = 0; i < params.n_channels; i++) { 3160 struct ieee80211_channel *channel = params.channels[i]; 3161 3162 if (channel->band == NL80211_BAND_6GHZ && 3163 !cfg80211_channel_is_psc(channel)) { 3164 non_psc_included = true; 3165 break; 3166 } 3167 } 3168 3169 if (non_psc_included) { 3170 params.channels = kmemdup(params.channels, 3171 sizeof(params.channels[0]) * 3172 params.n_channels, 3173 GFP_KERNEL); 3174 if (!params.channels) 3175 return -ENOMEM; 3176 3177 for (i = j = 0; i < params.n_channels; i++) { 3178 if (params.channels[i]->band == NL80211_BAND_6GHZ && 3179 !cfg80211_channel_is_psc(params.channels[i])) 3180 continue; 3181 params.channels[j++] = params.channels[i]; 3182 } 3183 params.n_channels = j; 3184 } 3185 3186 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 3187 ret = -ENOBUFS; 3188 goto out; 3189 } 3190 3191 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 3192 if (uid < 0) { 3193 ret = uid; 3194 goto out; 3195 } 3196 3197 ret = iwl_mvm_send_cmd(mvm, &hcmd); 3198 if (!ret) { 3199 IWL_DEBUG_SCAN(mvm, 3200 "Sched scan request send success: type=%u, uid=%u\n", 3201 type, uid); 3202 mvm->scan_uid_status[uid] = type; 3203 mvm->scan_status |= type; 3204 } else { 3205 /* If the scan failed, it usually means that the FW was unable 3206 * to allocate the time events. Warn on it, but maybe we 3207 * should try to send the command again with different params. 3208 */ 3209 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 3210 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3211 } 3212 3213 out: 3214 if (non_psc_included) 3215 kfree(params.channels); 3216 return ret; 3217 } 3218 3219 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 3220 struct iwl_rx_cmd_buffer *rxb) 3221 { 3222 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3223 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 3224 u32 uid = __le32_to_cpu(notif->uid); 3225 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 3226 bool select_links = false; 3227 3228 mvm->mei_scan_filter.is_mei_limited_scan = false; 3229 3230 IWL_DEBUG_SCAN(mvm, 3231 "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n", 3232 uid, mvm->scan_uid_status[uid], 3233 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 3234 "completed" : "aborted", 3235 iwl_mvm_ebs_status_str(notif->ebs_status)); 3236 3237 IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n", 3238 mvm->scan_status); 3239 3240 IWL_DEBUG_SCAN(mvm, 3241 "Scan completed: line=%u, iter=%u, elapsed time=%u\n", 3242 notif->last_schedule, notif->last_iter, 3243 __le32_to_cpu(notif->time_from_last_iter)); 3244 3245 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 3246 return; 3247 3248 /* if the scan is already stopping, we don't need to notify mac80211 */ 3249 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 3250 struct cfg80211_scan_info info = { 3251 .aborted = aborted, 3252 .scan_start_tsf = mvm->scan_start, 3253 }; 3254 struct iwl_mvm_vif *scan_vif = mvm->scan_vif; 3255 struct iwl_mvm_vif_link_info *link_info = 3256 scan_vif->link[mvm->scan_link_id]; 3257 3258 /* It is possible that by the time the scan is complete the link 3259 * was already removed and is not valid. 3260 */ 3261 if (link_info) 3262 memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN); 3263 else 3264 IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n"); 3265 3266 ieee80211_scan_completed(mvm->hw, &info); 3267 mvm->scan_vif = NULL; 3268 cancel_delayed_work(&mvm->scan_timeout_dwork); 3269 iwl_mvm_resume_tcm(mvm); 3270 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 3271 ieee80211_sched_scan_stopped(mvm->hw); 3272 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3273 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) { 3274 IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n"); 3275 /* 3276 * Other scan types won't necessarily scan for the MLD links channels. 3277 * Therefore, only select links after successful internal scan. 3278 */ 3279 select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED; 3280 } 3281 3282 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 3283 3284 IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n", 3285 mvm->scan_status); 3286 3287 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 3288 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 3289 mvm->last_ebs_successful = false; 3290 3291 mvm->scan_uid_status[uid] = 0; 3292 3293 if (select_links) 3294 wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk); 3295 } 3296 3297 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 3298 struct iwl_rx_cmd_buffer *rxb) 3299 { 3300 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3301 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 3302 3303 mvm->scan_start = le64_to_cpu(notif->start_tsf); 3304 3305 IWL_DEBUG_SCAN(mvm, 3306 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 3307 notif->status, notif->scanned_channels); 3308 3309 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 3310 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 3311 ieee80211_sched_scan_results(mvm->hw); 3312 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 3313 } 3314 3315 IWL_DEBUG_SCAN(mvm, 3316 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 3317 mvm->scan_start); 3318 } 3319 3320 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 3321 { 3322 struct iwl_umac_scan_abort cmd = {}; 3323 int uid, ret; 3324 3325 lockdep_assert_held(&mvm->mutex); 3326 3327 /* We should always get a valid index here, because we already 3328 * checked that this type of scan was running in the generic 3329 * code. 3330 */ 3331 uid = iwl_mvm_scan_uid_by_status(mvm, type); 3332 if (WARN_ON_ONCE(uid < 0)) 3333 return uid; 3334 3335 cmd.uid = cpu_to_le32(uid); 3336 3337 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 3338 3339 ret = iwl_mvm_send_cmd_pdu(mvm, 3340 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), 3341 CMD_SEND_IN_RFKILL, sizeof(cmd), &cmd); 3342 if (!ret) 3343 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 3344 3345 IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d\n", ret); 3346 return ret; 3347 } 3348 3349 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 3350 { 3351 struct iwl_notification_wait wait_scan_done; 3352 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 3353 SCAN_OFFLOAD_COMPLETE, }; 3354 int ret; 3355 3356 lockdep_assert_held(&mvm->mutex); 3357 3358 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 3359 scan_done_notif, 3360 ARRAY_SIZE(scan_done_notif), 3361 NULL, NULL); 3362 3363 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 3364 3365 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 3366 ret = iwl_mvm_umac_scan_abort(mvm, type); 3367 else 3368 ret = iwl_mvm_lmac_scan_abort(mvm); 3369 3370 if (ret) { 3371 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 3372 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 3373 return ret; 3374 } 3375 3376 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 3377 1 * HZ); 3378 } 3379 3380 static size_t iwl_scan_req_umac_get_size(u8 scan_ver) 3381 { 3382 switch (scan_ver) { 3383 case 12: 3384 return sizeof(struct iwl_scan_req_umac_v12); 3385 case 14: 3386 case 15: 3387 case 16: 3388 case 17: 3389 return sizeof(struct iwl_scan_req_umac_v17); 3390 } 3391 3392 return 0; 3393 } 3394 3395 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) 3396 { 3397 int base_size, tail_size; 3398 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 3399 IWL_FW_CMD_VER_UNKNOWN); 3400 3401 base_size = iwl_scan_req_umac_get_size(scan_ver); 3402 if (base_size) 3403 return base_size; 3404 3405 3406 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 3407 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 3408 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 3409 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 3410 else if (iwl_mvm_cdb_scan_api(mvm)) 3411 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 3412 else 3413 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 3414 3415 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3416 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 3417 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 3418 else 3419 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 3420 3421 return base_size + 3422 sizeof(struct iwl_scan_channel_cfg_umac) * 3423 mvm->fw->ucode_capa.n_scan_channels + 3424 tail_size; 3425 } 3426 return sizeof(struct iwl_scan_req_lmac) + 3427 sizeof(struct iwl_scan_channel_cfg_lmac) * 3428 mvm->fw->ucode_capa.n_scan_channels + 3429 sizeof(struct iwl_scan_probe_req_v1); 3430 } 3431 3432 /* 3433 * This function is used in nic restart flow, to inform mac80211 about scans 3434 * that was aborted by restart flow or by an assert. 3435 */ 3436 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 3437 { 3438 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 3439 int uid, i; 3440 3441 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 3442 if (uid >= 0) { 3443 struct cfg80211_scan_info info = { 3444 .aborted = true, 3445 }; 3446 3447 cancel_delayed_work(&mvm->scan_timeout_dwork); 3448 3449 ieee80211_scan_completed(mvm->hw, &info); 3450 mvm->scan_uid_status[uid] = 0; 3451 } 3452 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 3453 if (uid >= 0) { 3454 /* Sched scan will be restarted by mac80211 in 3455 * restart_hw, so do not report if FW is about to be 3456 * restarted. 3457 */ 3458 if (!mvm->fw_restart) 3459 ieee80211_sched_scan_stopped(mvm->hw); 3460 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3461 mvm->scan_uid_status[uid] = 0; 3462 } 3463 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO); 3464 if (uid >= 0) { 3465 IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n"); 3466 mvm->scan_uid_status[uid] = 0; 3467 } 3468 3469 uid = iwl_mvm_scan_uid_by_status(mvm, 3470 IWL_MVM_SCAN_STOPPING_REGULAR); 3471 if (uid >= 0) 3472 mvm->scan_uid_status[uid] = 0; 3473 3474 uid = iwl_mvm_scan_uid_by_status(mvm, 3475 IWL_MVM_SCAN_STOPPING_SCHED); 3476 if (uid >= 0) 3477 mvm->scan_uid_status[uid] = 0; 3478 3479 uid = iwl_mvm_scan_uid_by_status(mvm, 3480 IWL_MVM_SCAN_STOPPING_INT_MLO); 3481 if (uid >= 0) 3482 mvm->scan_uid_status[uid] = 0; 3483 3484 /* We shouldn't have any UIDs still set. Loop over all the 3485 * UIDs to make sure there's nothing left there and warn if 3486 * any is found. 3487 */ 3488 for (i = 0; i < mvm->max_scans; i++) { 3489 if (WARN_ONCE(mvm->scan_uid_status[i], 3490 "UMAC scan UID %d status was not cleaned\n", 3491 i)) 3492 mvm->scan_uid_status[i] = 0; 3493 } 3494 } else { 3495 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 3496 struct cfg80211_scan_info info = { 3497 .aborted = true, 3498 }; 3499 3500 cancel_delayed_work(&mvm->scan_timeout_dwork); 3501 ieee80211_scan_completed(mvm->hw, &info); 3502 } 3503 3504 /* Sched scan will be restarted by mac80211 in 3505 * restart_hw, so do not report if FW is about to be 3506 * restarted. 3507 */ 3508 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 3509 !mvm->fw_restart) { 3510 ieee80211_sched_scan_stopped(mvm->hw); 3511 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3512 } 3513 } 3514 } 3515 3516 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 3517 { 3518 int ret; 3519 3520 IWL_DEBUG_SCAN(mvm, 3521 "Request to stop scan: type=0x%x, status=0x%x\n", 3522 type, mvm->scan_status); 3523 3524 if (!(mvm->scan_status & type)) 3525 return 0; 3526 3527 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { 3528 ret = 0; 3529 goto out; 3530 } 3531 3532 ret = iwl_mvm_scan_stop_wait(mvm, type); 3533 if (!ret) 3534 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 3535 else 3536 IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n"); 3537 3538 out: 3539 /* Clear the scan status so the next scan requests will 3540 * succeed and mark the scan as stopping, so that the Rx 3541 * handler doesn't do anything, as the scan was stopped from 3542 * above. 3543 */ 3544 mvm->scan_status &= ~type; 3545 3546 if (type == IWL_MVM_SCAN_REGULAR) { 3547 cancel_delayed_work(&mvm->scan_timeout_dwork); 3548 if (notify) { 3549 struct cfg80211_scan_info info = { 3550 .aborted = true, 3551 }; 3552 3553 ieee80211_scan_completed(mvm->hw, &info); 3554 } 3555 } else if (notify) { 3556 ieee80211_sched_scan_stopped(mvm->hw); 3557 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 3558 } 3559 3560 return ret; 3561 } 3562 3563 static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm, 3564 struct ieee80211_vif *vif, 3565 struct ieee80211_channel **channels, 3566 size_t n_channels) 3567 { 3568 struct cfg80211_scan_request *req = NULL; 3569 struct ieee80211_scan_ies ies = {}; 3570 size_t size, i; 3571 int ret; 3572 3573 lockdep_assert_held(&mvm->mutex); 3574 3575 IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n", 3576 n_channels); 3577 3578 if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) 3579 return -EINVAL; 3580 3581 size = struct_size(req, channels, n_channels); 3582 req = kzalloc(size, GFP_KERNEL); 3583 if (!req) 3584 return -ENOMEM; 3585 3586 /* set the requested channels */ 3587 for (i = 0; i < n_channels; i++) 3588 req->channels[i] = channels[i]; 3589 3590 req->n_channels = n_channels; 3591 3592 /* set the rates */ 3593 for (i = 0; i < NUM_NL80211_BANDS; i++) 3594 if (mvm->hw->wiphy->bands[i]) 3595 req->rates[i] = 3596 (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1; 3597 3598 req->wdev = ieee80211_vif_to_wdev(vif); 3599 req->wiphy = mvm->hw->wiphy; 3600 req->scan_start = jiffies; 3601 req->tsf_report_link_id = -1; 3602 3603 ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies, 3604 IWL_MVM_SCAN_INT_MLO); 3605 kfree(req); 3606 3607 IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret); 3608 return ret; 3609 } 3610 3611 int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif) 3612 { 3613 struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS]; 3614 unsigned long usable_links = ieee80211_vif_usable_links(vif); 3615 size_t n_channels = 0; 3616 u8 link_id; 3617 3618 lockdep_assert_held(&mvm->mutex); 3619 3620 if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) { 3621 IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n"); 3622 return -EBUSY; 3623 } 3624 3625 rcu_read_lock(); 3626 3627 for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { 3628 struct ieee80211_bss_conf *link_conf = 3629 rcu_dereference(vif->link_conf[link_id]); 3630 3631 if (WARN_ON_ONCE(!link_conf)) 3632 continue; 3633 3634 channels[n_channels++] = link_conf->chanreq.oper.chan; 3635 } 3636 3637 rcu_read_unlock(); 3638 3639 if (!n_channels) 3640 return -EINVAL; 3641 3642 return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels); 3643 } 3644 3645 static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm, 3646 enum nl80211_band band, 3647 u16 phy_chan_num) 3648 { 3649 struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band]; 3650 int chan_idx; 3651 3652 if (WARN_ON_ONCE(!sband)) 3653 return -EINVAL; 3654 3655 for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) { 3656 struct ieee80211_channel *channel = &sband->channels[chan_idx]; 3657 3658 if (channel->hw_value == phy_chan_num) 3659 return chan_idx; 3660 } 3661 3662 return -EINVAL; 3663 } 3664 3665 static u32 iwl_mvm_div_by_db(u32 value, u8 db) 3666 { 3667 /* 3668 * 2^32 * 10**(i / 10) for i = [1, 10], skipping 0 and simply stopping 3669 * at 10 dB and looping instead of using a much larger table. 3670 * 3671 * Using 64 bit math is overkill, but means the helper does not require 3672 * a limit on the input range. 3673 */ 3674 static const u32 db_to_val[] = { 3675 0xcb59185e, 0xa1866ba8, 0x804dce7a, 0x65ea59fe, 0x50f44d89, 3676 0x404de61f, 0x331426af, 0x2892c18b, 0x203a7e5b, 0x1999999a, 3677 }; 3678 3679 while (value && db > 0) { 3680 u8 change = min_t(u8, db, ARRAY_SIZE(db_to_val)); 3681 3682 value = (((u64)value) * db_to_val[change - 1]) >> 32; 3683 3684 db -= change; 3685 } 3686 3687 return value; 3688 } 3689 3690 VISIBLE_IF_IWLWIFI_KUNIT s8 3691 iwl_mvm_average_dbm_values(const struct iwl_umac_scan_channel_survey_notif *notif) 3692 { 3693 s8 average_magnitude; 3694 u32 average_factor; 3695 s8 sum_magnitude = -128; 3696 u32 sum_factor = 0; 3697 int i, count = 0; 3698 3699 /* 3700 * To properly average the decibel values (signal values given in dBm) 3701 * we need to do the math in linear space. Doing a linear average of 3702 * dB (dBm) values is a bit annoying though due to the large range of 3703 * at least -10 to -110 dBm that will not fit into a 32 bit integer. 3704 * 3705 * A 64 bit integer should be sufficient, but then we still have the 3706 * problem that there are no directly usable utility functions 3707 * available. 3708 * 3709 * So, lets not deal with that and instead do much of the calculation 3710 * with a 16.16 fixed point integer along with a base in dBm. 16.16 bit 3711 * gives us plenty of head-room for adding up a few values and even 3712 * doing some math on it. And the tail should be accurate enough too 3713 * (1/2^16 is somewhere around -48 dB, so effectively zero). 3714 * 3715 * i.e. the real value of sum is: 3716 * sum = sum_factor / 2^16 * 10^(sum_magnitude / 10) mW 3717 * 3718 * However, that does mean we need to be able to bring two values to 3719 * a common base, so we need a helper for that. 3720 * 3721 * Note that this function takes an input with unsigned negative dBm 3722 * values but returns a signed dBm (i.e. a negative value). 3723 */ 3724 3725 for (i = 0; i < ARRAY_SIZE(notif->noise); i++) { 3726 s8 val_magnitude; 3727 u32 val_factor; 3728 3729 if (notif->noise[i] == 0xff) 3730 continue; 3731 3732 val_factor = 0x10000; 3733 val_magnitude = -notif->noise[i]; 3734 3735 if (val_magnitude <= sum_magnitude) { 3736 u8 div_db = sum_magnitude - val_magnitude; 3737 3738 val_factor = iwl_mvm_div_by_db(val_factor, div_db); 3739 val_magnitude = sum_magnitude; 3740 } else { 3741 u8 div_db = val_magnitude - sum_magnitude; 3742 3743 sum_factor = iwl_mvm_div_by_db(sum_factor, div_db); 3744 sum_magnitude = val_magnitude; 3745 } 3746 3747 sum_factor += val_factor; 3748 count++; 3749 } 3750 3751 /* No valid noise measurement, return a very high noise level */ 3752 if (count == 0) 3753 return 0; 3754 3755 average_magnitude = sum_magnitude; 3756 average_factor = sum_factor / count; 3757 3758 /* 3759 * average_factor will be a number smaller than 1.0 (0x10000) at this 3760 * point. What we need to do now is to adjust average_magnitude so that 3761 * average_factor is between -0.5 dB and 0.5 dB. 3762 * 3763 * Just do -1 dB steps and find the point where 3764 * -0.5 dB * -i dB = 0x10000 * 10^(-0.5/10) / i dB 3765 * = div_by_db(0xe429, i) 3766 * is smaller than average_factor. 3767 */ 3768 for (i = 0; average_factor < iwl_mvm_div_by_db(0xe429, i); i++) { 3769 /* nothing */ 3770 } 3771 3772 return average_magnitude - i; 3773 } 3774 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_average_dbm_values); 3775 3776 void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm, 3777 struct iwl_rx_cmd_buffer *rxb) 3778 { 3779 struct iwl_rx_packet *pkt = rxb_addr(rxb); 3780 const struct iwl_umac_scan_channel_survey_notif *notif = 3781 (void *)pkt->data; 3782 struct iwl_mvm_acs_survey_channel *info; 3783 enum nl80211_band band; 3784 int chan_idx; 3785 3786 lockdep_assert_held(&mvm->mutex); 3787 3788 if (!mvm->acs_survey) { 3789 size_t n_channels = 0; 3790 3791 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3792 if (!mvm->hw->wiphy->bands[band]) 3793 continue; 3794 3795 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3796 } 3797 3798 mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey, 3799 channels, n_channels), 3800 GFP_KERNEL); 3801 3802 if (!mvm->acs_survey) 3803 return; 3804 3805 mvm->acs_survey->n_channels = n_channels; 3806 n_channels = 0; 3807 for (band = 0; band < NUM_NL80211_BANDS; band++) { 3808 if (!mvm->hw->wiphy->bands[band]) 3809 continue; 3810 3811 mvm->acs_survey->bands[band] = 3812 &mvm->acs_survey->channels[n_channels]; 3813 n_channels += mvm->hw->wiphy->bands[band]->n_channels; 3814 } 3815 } 3816 3817 band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band)); 3818 chan_idx = iwl_mvm_chanidx_from_phy(mvm, band, 3819 le32_to_cpu(notif->channel)); 3820 if (WARN_ON_ONCE(chan_idx < 0)) 3821 return; 3822 3823 IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n", 3824 mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq); 3825 3826 info = &mvm->acs_survey->bands[band][chan_idx]; 3827 3828 /* Times are all in ms */ 3829 info->time = le32_to_cpu(notif->active_time); 3830 info->time_busy = le32_to_cpu(notif->busy_time); 3831 info->time_rx = le32_to_cpu(notif->rx_time); 3832 info->time_tx = le32_to_cpu(notif->tx_time); 3833 info->noise = iwl_mvm_average_dbm_values(notif); 3834 } 3835