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