1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause 2 /* 3 * Copyright (C) 2012-2014, 2018-2020 Intel Corporation 4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH 5 * Copyright (C) 2016-2017 Intel Deutschland GmbH 6 */ 7 #include <linux/etherdevice.h> 8 #include <net/mac80211.h> 9 #include <linux/crc32.h> 10 11 #include "mvm.h" 12 #include "fw/api/scan.h" 13 #include "iwl-io.h" 14 15 #define IWL_DENSE_EBS_SCAN_RATIO 5 16 #define IWL_SPARSE_EBS_SCAN_RATIO 1 17 18 #define IWL_SCAN_DWELL_ACTIVE 10 19 #define IWL_SCAN_DWELL_PASSIVE 110 20 #define IWL_SCAN_DWELL_FRAGMENTED 44 21 #define IWL_SCAN_DWELL_EXTENDED 90 22 #define IWL_SCAN_NUM_OF_FRAGS 3 23 #define IWL_SCAN_LAST_2_4_CHN 14 24 25 /* adaptive dwell max budget time [TU] for full scan */ 26 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 27 /* adaptive dwell max budget time [TU] for directed scan */ 28 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 29 /* adaptive dwell default high band APs number */ 30 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 31 /* adaptive dwell default low band APs number */ 32 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 33 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 34 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 35 /* number of scan channels */ 36 #define IWL_SCAN_NUM_CHANNELS 112 37 /* adaptive dwell number of APs override mask for p2p friendly GO */ 38 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 39 /* adaptive dwell number of APs override mask for social channels */ 40 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 41 /* adaptive dwell number of APs override for p2p friendly GO channels */ 42 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 43 /* adaptive dwell number of APs override for social channels */ 44 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 45 46 struct iwl_mvm_scan_timing_params { 47 u32 suspend_time; 48 u32 max_out_time; 49 }; 50 51 static struct iwl_mvm_scan_timing_params scan_timing[] = { 52 [IWL_SCAN_TYPE_UNASSOC] = { 53 .suspend_time = 0, 54 .max_out_time = 0, 55 }, 56 [IWL_SCAN_TYPE_WILD] = { 57 .suspend_time = 30, 58 .max_out_time = 120, 59 }, 60 [IWL_SCAN_TYPE_MILD] = { 61 .suspend_time = 120, 62 .max_out_time = 120, 63 }, 64 [IWL_SCAN_TYPE_FRAGMENTED] = { 65 .suspend_time = 95, 66 .max_out_time = 44, 67 }, 68 [IWL_SCAN_TYPE_FAST_BALANCE] = { 69 .suspend_time = 30, 70 .max_out_time = 37, 71 }, 72 }; 73 74 struct iwl_mvm_scan_params { 75 /* For CDB this is low band scan type, for non-CDB - type. */ 76 enum iwl_mvm_scan_type type; 77 enum iwl_mvm_scan_type hb_type; 78 u32 n_channels; 79 u16 delay; 80 int n_ssids; 81 struct cfg80211_ssid *ssids; 82 struct ieee80211_channel **channels; 83 u32 flags; 84 u8 *mac_addr; 85 u8 *mac_addr_mask; 86 bool no_cck; 87 bool pass_all; 88 int n_match_sets; 89 struct iwl_scan_probe_req preq; 90 struct cfg80211_match_set *match_sets; 91 int n_scan_plans; 92 struct cfg80211_sched_scan_plan *scan_plans; 93 bool iter_notif; 94 struct cfg80211_scan_6ghz_params *scan_6ghz_params; 95 u32 n_6ghz_params; 96 bool scan_6ghz; 97 }; 98 99 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 100 { 101 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 102 103 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 104 return (void *)&cmd->v8.data; 105 106 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 107 return (void *)&cmd->v7.data; 108 109 if (iwl_mvm_cdb_scan_api(mvm)) 110 return (void *)&cmd->v6.data; 111 112 return (void *)&cmd->v1.data; 113 } 114 115 static inline struct iwl_scan_umac_chan_param * 116 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 117 { 118 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 119 120 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 121 return &cmd->v8.channel; 122 123 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 124 return &cmd->v7.channel; 125 126 if (iwl_mvm_cdb_scan_api(mvm)) 127 return &cmd->v6.channel; 128 129 return &cmd->v1.channel; 130 } 131 132 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 133 { 134 if (mvm->scan_rx_ant != ANT_NONE) 135 return mvm->scan_rx_ant; 136 return iwl_mvm_get_valid_rx_ant(mvm); 137 } 138 139 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 140 { 141 u16 rx_chain; 142 u8 rx_ant; 143 144 rx_ant = iwl_mvm_scan_rx_ant(mvm); 145 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 146 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 147 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 148 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 149 return cpu_to_le16(rx_chain); 150 } 151 152 static inline __le32 153 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 154 bool no_cck) 155 { 156 u32 tx_ant; 157 158 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 159 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 160 161 if (band == NL80211_BAND_2GHZ && !no_cck) 162 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | 163 tx_ant); 164 else 165 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 166 } 167 168 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, 169 struct ieee80211_vif *vif) 170 { 171 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 172 int *global_cnt = data; 173 174 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 175 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 176 *global_cnt += 1; 177 } 178 179 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 180 { 181 return mvm->tcm.result.global_load; 182 } 183 184 static enum iwl_mvm_traffic_load 185 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 186 { 187 return mvm->tcm.result.band_load[band]; 188 } 189 190 struct iwl_is_dcm_with_go_iterator_data { 191 struct ieee80211_vif *current_vif; 192 bool is_dcm_with_p2p_go; 193 }; 194 195 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, 196 struct ieee80211_vif *vif) 197 { 198 struct iwl_is_dcm_with_go_iterator_data *data = _data; 199 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 200 struct iwl_mvm_vif *curr_mvmvif = 201 iwl_mvm_vif_from_mac80211(data->current_vif); 202 203 /* exclude the given vif */ 204 if (vif == data->current_vif) 205 return; 206 207 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 208 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 209 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 210 data->is_dcm_with_p2p_go = true; 211 } 212 213 static enum 214 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 215 struct ieee80211_vif *vif, 216 enum iwl_mvm_traffic_load load, 217 bool low_latency) 218 { 219 int global_cnt = 0; 220 221 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 222 IEEE80211_IFACE_ITER_NORMAL, 223 iwl_mvm_scan_condition_iterator, 224 &global_cnt); 225 if (!global_cnt) 226 return IWL_SCAN_TYPE_UNASSOC; 227 228 if (fw_has_api(&mvm->fw->ucode_capa, 229 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 230 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 231 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 232 return IWL_SCAN_TYPE_FRAGMENTED; 233 234 /* in case of DCM with GO where BSS DTIM interval < 220msec 235 * set all scan requests as fast-balance scan 236 * */ 237 if (vif && vif->type == NL80211_IFTYPE_STATION && 238 vif->bss_conf.dtim_period < 220) { 239 struct iwl_is_dcm_with_go_iterator_data data = { 240 .current_vif = vif, 241 .is_dcm_with_p2p_go = false, 242 }; 243 244 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 245 IEEE80211_IFACE_ITER_NORMAL, 246 iwl_mvm_is_dcm_with_go_iterator, 247 &data); 248 if (data.is_dcm_with_p2p_go) 249 return IWL_SCAN_TYPE_FAST_BALANCE; 250 } 251 } 252 253 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 254 return IWL_SCAN_TYPE_MILD; 255 256 return IWL_SCAN_TYPE_WILD; 257 } 258 259 static enum 260 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 261 struct ieee80211_vif *vif) 262 { 263 enum iwl_mvm_traffic_load load; 264 bool low_latency; 265 266 load = iwl_mvm_get_traffic_load(mvm); 267 low_latency = iwl_mvm_low_latency(mvm); 268 269 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 270 } 271 272 static enum 273 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 274 struct ieee80211_vif *vif, 275 enum nl80211_band band) 276 { 277 enum iwl_mvm_traffic_load load; 278 bool low_latency; 279 280 load = iwl_mvm_get_traffic_load_band(mvm, band); 281 low_latency = iwl_mvm_low_latency_band(mvm, band); 282 283 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 284 } 285 286 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 287 { 288 /* require rrm scan whenever the fw supports it */ 289 return fw_has_capa(&mvm->fw->ucode_capa, 290 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 291 } 292 293 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 294 { 295 int max_probe_len; 296 297 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 298 299 /* we create the 802.11 header and SSID element */ 300 max_probe_len -= 24 + 2; 301 302 /* DS parameter set element is added on 2.4GHZ band if required */ 303 if (iwl_mvm_rrm_scan_needed(mvm)) 304 max_probe_len -= 3; 305 306 return max_probe_len; 307 } 308 309 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 310 { 311 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 312 313 /* TODO: [BUG] This function should return the maximum allowed size of 314 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 315 * in the same command. So the correct implementation of this function 316 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 317 * command has only 512 bytes and it would leave us with about 240 318 * bytes for scan IEs, which is clearly not enough. So meanwhile 319 * we will report an incorrect value. This may result in a failure to 320 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 321 * functions with -ENOBUFS, if a large enough probe will be provided. 322 */ 323 return max_ie_len; 324 } 325 326 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 327 struct iwl_rx_cmd_buffer *rxb) 328 { 329 struct iwl_rx_packet *pkt = rxb_addr(rxb); 330 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 331 332 IWL_DEBUG_SCAN(mvm, 333 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 334 notif->status, notif->scanned_channels); 335 336 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 337 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 338 ieee80211_sched_scan_results(mvm->hw); 339 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 340 } 341 } 342 343 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 344 struct iwl_rx_cmd_buffer *rxb) 345 { 346 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 347 ieee80211_sched_scan_results(mvm->hw); 348 } 349 350 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 351 { 352 switch (status) { 353 case IWL_SCAN_EBS_SUCCESS: 354 return "successful"; 355 case IWL_SCAN_EBS_INACTIVE: 356 return "inactive"; 357 case IWL_SCAN_EBS_FAILED: 358 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 359 default: 360 return "failed"; 361 } 362 } 363 364 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 365 struct iwl_rx_cmd_buffer *rxb) 366 { 367 struct iwl_rx_packet *pkt = rxb_addr(rxb); 368 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 369 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 370 371 /* If this happens, the firmware has mistakenly sent an LMAC 372 * notification during UMAC scans -- warn and ignore it. 373 */ 374 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 375 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 376 return; 377 378 /* scan status must be locked for proper checking */ 379 lockdep_assert_held(&mvm->mutex); 380 381 /* We first check if we were stopping a scan, in which case we 382 * just clear the stopping flag. Then we check if it was a 383 * firmware initiated stop, in which case we need to inform 384 * mac80211. 385 * Note that we can have a stopping and a running scan 386 * simultaneously, but we can't have two different types of 387 * scans stopping or running at the same time (since LMAC 388 * doesn't support it). 389 */ 390 391 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 392 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 393 394 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 395 aborted ? "aborted" : "completed", 396 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 397 IWL_DEBUG_SCAN(mvm, 398 "Last line %d, Last iteration %d, Time after last iteration %d\n", 399 scan_notif->last_schedule_line, 400 scan_notif->last_schedule_iteration, 401 __le32_to_cpu(scan_notif->time_after_last_iter)); 402 403 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 404 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 405 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 406 aborted ? "aborted" : "completed", 407 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 408 409 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 410 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 411 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 412 413 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 414 aborted ? "aborted" : "completed", 415 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 416 IWL_DEBUG_SCAN(mvm, 417 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 418 scan_notif->last_schedule_line, 419 scan_notif->last_schedule_iteration, 420 __le32_to_cpu(scan_notif->time_after_last_iter)); 421 422 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 423 ieee80211_sched_scan_stopped(mvm->hw); 424 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 425 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 426 struct cfg80211_scan_info info = { 427 .aborted = aborted, 428 }; 429 430 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 431 aborted ? "aborted" : "completed", 432 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 433 434 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 435 ieee80211_scan_completed(mvm->hw, &info); 436 cancel_delayed_work(&mvm->scan_timeout_dwork); 437 iwl_mvm_resume_tcm(mvm); 438 } else { 439 IWL_ERR(mvm, 440 "got scan complete notification but no scan is running\n"); 441 } 442 443 mvm->last_ebs_successful = 444 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 445 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 446 } 447 448 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 449 { 450 int i; 451 452 for (i = 0; i < PROBE_OPTION_MAX; i++) { 453 if (!ssid_list[i].len) 454 break; 455 if (ssid_list[i].len == ssid_len && 456 !memcmp(ssid_list->ssid, ssid, ssid_len)) 457 return i; 458 } 459 return -1; 460 } 461 462 /* We insert the SSIDs in an inverted order, because the FW will 463 * invert it back. 464 */ 465 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 466 struct iwl_ssid_ie *ssids, 467 u32 *ssid_bitmap) 468 { 469 int i, j; 470 int index; 471 u32 tmp_bitmap = 0; 472 473 /* 474 * copy SSIDs from match list. 475 * iwl_config_sched_scan_profiles() uses the order of these ssids to 476 * config match list. 477 */ 478 for (i = 0, j = params->n_match_sets - 1; 479 j >= 0 && i < PROBE_OPTION_MAX; 480 i++, j--) { 481 /* skip empty SSID matchsets */ 482 if (!params->match_sets[j].ssid.ssid_len) 483 continue; 484 ssids[i].id = WLAN_EID_SSID; 485 ssids[i].len = params->match_sets[j].ssid.ssid_len; 486 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 487 ssids[i].len); 488 } 489 490 /* add SSIDs from scan SSID list */ 491 for (j = params->n_ssids - 1; 492 j >= 0 && i < PROBE_OPTION_MAX; 493 i++, j--) { 494 index = iwl_ssid_exist(params->ssids[j].ssid, 495 params->ssids[j].ssid_len, 496 ssids); 497 if (index < 0) { 498 ssids[i].id = WLAN_EID_SSID; 499 ssids[i].len = params->ssids[j].ssid_len; 500 memcpy(ssids[i].ssid, params->ssids[j].ssid, 501 ssids[i].len); 502 tmp_bitmap |= BIT(i); 503 } else { 504 tmp_bitmap |= BIT(index); 505 } 506 } 507 if (ssid_bitmap) 508 *ssid_bitmap = tmp_bitmap; 509 } 510 511 static int 512 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 513 struct cfg80211_sched_scan_request *req) 514 { 515 struct iwl_scan_offload_profile *profile; 516 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 517 struct iwl_scan_offload_blocklist *blocklist; 518 struct iwl_scan_offload_profile_cfg_data *data; 519 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 520 int profile_cfg_size = sizeof(*data) + 521 sizeof(*profile) * max_profiles; 522 struct iwl_host_cmd cmd = { 523 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 524 .len[1] = profile_cfg_size, 525 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 526 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 527 }; 528 int blocklist_len; 529 int i; 530 int ret; 531 532 if (WARN_ON(req->n_match_sets > max_profiles)) 533 return -EIO; 534 535 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 536 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 537 else 538 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 539 540 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); 541 if (!blocklist) 542 return -ENOMEM; 543 544 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 545 if (!profile_cfg_v1) { 546 ret = -ENOMEM; 547 goto free_blocklist; 548 } 549 550 cmd.data[0] = blocklist; 551 cmd.len[0] = sizeof(*blocklist) * blocklist_len; 552 cmd.data[1] = profile_cfg_v1; 553 554 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 555 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 556 struct iwl_scan_offload_profile_cfg *profile_cfg = 557 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 558 559 data = &profile_cfg->data; 560 } else { 561 data = &profile_cfg_v1->data; 562 } 563 564 /* No blocklist configuration */ 565 data->num_profiles = req->n_match_sets; 566 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 567 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 568 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 569 570 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 571 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 572 573 for (i = 0; i < req->n_match_sets; i++) { 574 profile = &profile_cfg_v1->profiles[i]; 575 profile->ssid_index = i; 576 /* Support any cipher and auth algorithm */ 577 profile->unicast_cipher = 0xff; 578 profile->auth_alg = 0xff; 579 profile->network_type = IWL_NETWORK_TYPE_ANY; 580 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 581 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 582 } 583 584 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 585 586 ret = iwl_mvm_send_cmd(mvm, &cmd); 587 kfree(profile_cfg_v1); 588 free_blocklist: 589 kfree(blocklist); 590 591 return ret; 592 } 593 594 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 595 struct cfg80211_sched_scan_request *req) 596 { 597 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 598 IWL_DEBUG_SCAN(mvm, 599 "Sending scheduled scan with filtering, n_match_sets %d\n", 600 req->n_match_sets); 601 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 602 return false; 603 } 604 605 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 606 607 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 608 return true; 609 } 610 611 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 612 { 613 int ret; 614 struct iwl_host_cmd cmd = { 615 .id = SCAN_OFFLOAD_ABORT_CMD, 616 }; 617 u32 status = CAN_ABORT_STATUS; 618 619 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 620 if (ret) 621 return ret; 622 623 if (status != CAN_ABORT_STATUS) { 624 /* 625 * The scan abort will return 1 for success or 626 * 2 for "failure". A failure condition can be 627 * due to simply not being in an active scan which 628 * can occur if we send the scan abort before the 629 * microcode has notified us that a scan is completed. 630 */ 631 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 632 ret = -ENOENT; 633 } 634 635 return ret; 636 } 637 638 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 639 struct iwl_scan_req_tx_cmd *tx_cmd, 640 bool no_cck) 641 { 642 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 643 TX_CMD_FLG_BT_DIS); 644 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 645 NL80211_BAND_2GHZ, 646 no_cck); 647 648 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 649 ADD_STA, 650 0) < 12) { 651 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 652 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 653 654 /* 655 * Fw doesn't use this sta anymore, pending deprecation via HOST API 656 * change 657 */ 658 } else { 659 tx_cmd[0].sta_id = 0xff; 660 tx_cmd[1].sta_id = 0xff; 661 } 662 663 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 664 TX_CMD_FLG_BT_DIS); 665 666 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 667 NL80211_BAND_5GHZ, 668 no_cck); 669 } 670 671 static void 672 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 673 struct ieee80211_channel **channels, 674 int n_channels, u32 ssid_bitmap, 675 struct iwl_scan_req_lmac *cmd) 676 { 677 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 678 int i; 679 680 for (i = 0; i < n_channels; i++) { 681 channel_cfg[i].channel_num = 682 cpu_to_le16(channels[i]->hw_value); 683 channel_cfg[i].iter_count = cpu_to_le16(1); 684 channel_cfg[i].iter_interval = 0; 685 channel_cfg[i].flags = 686 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 687 ssid_bitmap); 688 } 689 } 690 691 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 692 size_t len, u8 *const pos) 693 { 694 static const u8 before_ds_params[] = { 695 WLAN_EID_SSID, 696 WLAN_EID_SUPP_RATES, 697 WLAN_EID_REQUEST, 698 WLAN_EID_EXT_SUPP_RATES, 699 }; 700 size_t offs; 701 u8 *newpos = pos; 702 703 if (!iwl_mvm_rrm_scan_needed(mvm)) { 704 memcpy(newpos, ies, len); 705 return newpos + len; 706 } 707 708 offs = ieee80211_ie_split(ies, len, 709 before_ds_params, 710 ARRAY_SIZE(before_ds_params), 711 0); 712 713 memcpy(newpos, ies, offs); 714 newpos += offs; 715 716 /* Add a placeholder for DS Parameter Set element */ 717 *newpos++ = WLAN_EID_DS_PARAMS; 718 *newpos++ = 1; 719 *newpos++ = 0; 720 721 memcpy(newpos, ies + offs, len - offs); 722 newpos += len - offs; 723 724 return newpos; 725 } 726 727 #define WFA_TPC_IE_LEN 9 728 729 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 eth_broadcast_addr(frame->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] + 834 ies->len[NL80211_BAND_5GHZ] <= 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_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1088 ADD_STA, 0) >= 12); 1089 1090 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1091 cfg->channel_flags = channel_flags; 1092 1093 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1094 } 1095 1096 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1097 u32 flags, u8 channel_flags, 1098 u32 max_channels) 1099 { 1100 struct iwl_scan_config_v2 *cfg = config; 1101 1102 cfg->flags = cpu_to_le32(flags); 1103 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1104 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1105 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1106 1107 if (iwl_mvm_is_cdb_supported(mvm)) { 1108 enum iwl_mvm_scan_type lb_type, hb_type; 1109 1110 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1111 NL80211_BAND_2GHZ); 1112 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1113 NL80211_BAND_5GHZ); 1114 1115 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1116 cpu_to_le32(scan_timing[lb_type].max_out_time); 1117 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1118 cpu_to_le32(scan_timing[lb_type].suspend_time); 1119 1120 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1121 cpu_to_le32(scan_timing[hb_type].max_out_time); 1122 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1123 cpu_to_le32(scan_timing[hb_type].suspend_time); 1124 } else { 1125 enum iwl_mvm_scan_type type = 1126 iwl_mvm_get_scan_type(mvm, NULL); 1127 1128 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1129 cpu_to_le32(scan_timing[type].max_out_time); 1130 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1131 cpu_to_le32(scan_timing[type].suspend_time); 1132 } 1133 1134 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1135 1136 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1137 1138 /* This function should not be called when using ADD_STA ver >=12 */ 1139 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1140 ADD_STA, 0) >= 12); 1141 1142 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1143 cfg->channel_flags = channel_flags; 1144 1145 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1146 } 1147 1148 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1149 { 1150 void *cfg; 1151 int ret, cmd_size; 1152 struct iwl_host_cmd cmd = { 1153 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1154 }; 1155 enum iwl_mvm_scan_type type; 1156 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1157 int num_channels = 1158 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1159 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1160 u32 flags; 1161 u8 channel_flags; 1162 1163 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1164 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1165 1166 if (iwl_mvm_is_cdb_supported(mvm)) { 1167 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1168 NL80211_BAND_2GHZ); 1169 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1170 NL80211_BAND_5GHZ); 1171 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1172 return 0; 1173 } else { 1174 type = iwl_mvm_get_scan_type(mvm, NULL); 1175 if (type == mvm->scan_type) 1176 return 0; 1177 } 1178 1179 if (iwl_mvm_cdb_scan_api(mvm)) 1180 cmd_size = sizeof(struct iwl_scan_config_v2); 1181 else 1182 cmd_size = sizeof(struct iwl_scan_config_v1); 1183 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1184 1185 cfg = kzalloc(cmd_size, GFP_KERNEL); 1186 if (!cfg) 1187 return -ENOMEM; 1188 1189 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1190 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1191 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1192 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1193 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1194 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1195 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1196 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1197 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1198 SCAN_CONFIG_N_CHANNELS(num_channels) | 1199 (iwl_mvm_is_scan_fragmented(type) ? 1200 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1201 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1202 1203 channel_flags = IWL_CHANNEL_FLAG_EBS | 1204 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1205 IWL_CHANNEL_FLAG_EBS_ADD | 1206 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1207 1208 /* 1209 * Check for fragmented scan on LMAC2 - high band. 1210 * LMAC1 - low band is checked above. 1211 */ 1212 if (iwl_mvm_cdb_scan_api(mvm)) { 1213 if (iwl_mvm_is_cdb_supported(mvm)) 1214 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1215 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1216 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1217 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1218 num_channels); 1219 } else { 1220 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1221 num_channels); 1222 } 1223 1224 cmd.data[0] = cfg; 1225 cmd.len[0] = cmd_size; 1226 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1227 1228 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1229 1230 ret = iwl_mvm_send_cmd(mvm, &cmd); 1231 if (!ret) { 1232 mvm->scan_type = type; 1233 mvm->hb_scan_type = hb_type; 1234 } 1235 1236 kfree(cfg); 1237 return ret; 1238 } 1239 1240 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1241 { 1242 struct iwl_scan_config cfg; 1243 struct iwl_host_cmd cmd = { 1244 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1245 .len[0] = sizeof(cfg), 1246 .data[0] = &cfg, 1247 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1248 }; 1249 1250 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1251 return iwl_mvm_legacy_config_scan(mvm); 1252 1253 memset(&cfg, 0, sizeof(cfg)); 1254 1255 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1256 ADD_STA, 0) < 12) 1257 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1258 /* 1259 * Fw doesn't use this sta anymore, pending deprecation via HOST API 1260 * change. 1261 */ 1262 else 1263 cfg.bcast_sta_id = 0xff; 1264 1265 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1266 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1267 1268 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1269 1270 return iwl_mvm_send_cmd(mvm, &cmd); 1271 } 1272 1273 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1274 { 1275 int i; 1276 1277 for (i = 0; i < mvm->max_scans; i++) 1278 if (mvm->scan_uid_status[i] == status) 1279 return i; 1280 1281 return -ENOENT; 1282 } 1283 1284 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1285 struct iwl_scan_req_umac *cmd, 1286 struct iwl_mvm_scan_params *params) 1287 { 1288 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1289 u8 active_dwell, passive_dwell; 1290 1291 timing = &scan_timing[params->type]; 1292 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1293 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1294 1295 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1296 cmd->v7.adwell_default_n_aps_social = 1297 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1298 cmd->v7.adwell_default_n_aps = 1299 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1300 1301 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1302 cmd->v9.adwell_default_hb_n_aps = 1303 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1304 1305 /* if custom max budget was configured with debugfs */ 1306 if (IWL_MVM_ADWELL_MAX_BUDGET) 1307 cmd->v7.adwell_max_budget = 1308 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1309 else if (params->ssids && params->ssids[0].ssid_len) 1310 cmd->v7.adwell_max_budget = 1311 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1312 else 1313 cmd->v7.adwell_max_budget = 1314 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1315 1316 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1317 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1318 cpu_to_le32(timing->max_out_time); 1319 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1320 cpu_to_le32(timing->suspend_time); 1321 1322 if (iwl_mvm_is_cdb_supported(mvm)) { 1323 hb_timing = &scan_timing[params->hb_type]; 1324 1325 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1326 cpu_to_le32(hb_timing->max_out_time); 1327 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1328 cpu_to_le32(hb_timing->suspend_time); 1329 } 1330 1331 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1332 cmd->v7.active_dwell = active_dwell; 1333 cmd->v7.passive_dwell = passive_dwell; 1334 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1335 } else { 1336 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1337 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1338 if (iwl_mvm_is_cdb_supported(mvm)) { 1339 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1340 active_dwell; 1341 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1342 passive_dwell; 1343 } 1344 } 1345 } else { 1346 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1347 cmd->v1.active_dwell = active_dwell; 1348 cmd->v1.passive_dwell = passive_dwell; 1349 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1350 1351 if (iwl_mvm_is_cdb_supported(mvm)) { 1352 hb_timing = &scan_timing[params->hb_type]; 1353 1354 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1355 cpu_to_le32(hb_timing->max_out_time); 1356 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1357 cpu_to_le32(hb_timing->suspend_time); 1358 } 1359 1360 if (iwl_mvm_cdb_scan_api(mvm)) { 1361 cmd->v6.scan_priority = 1362 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1363 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1364 cpu_to_le32(timing->max_out_time); 1365 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1366 cpu_to_le32(timing->suspend_time); 1367 } else { 1368 cmd->v1.scan_priority = 1369 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1370 cmd->v1.max_out_time = 1371 cpu_to_le32(timing->max_out_time); 1372 cmd->v1.suspend_time = 1373 cpu_to_le32(timing->suspend_time); 1374 } 1375 } 1376 1377 if (iwl_mvm_is_regular_scan(params)) 1378 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1379 else 1380 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1381 } 1382 1383 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1384 { 1385 return iwl_mvm_is_regular_scan(params) ? 1386 IWL_SCAN_PRIORITY_EXT_6 : 1387 IWL_SCAN_PRIORITY_EXT_2; 1388 } 1389 1390 static void 1391 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, 1392 struct iwl_scan_general_params_v10 *general_params, 1393 struct iwl_mvm_scan_params *params) 1394 { 1395 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1396 u8 active_dwell, passive_dwell; 1397 1398 timing = &scan_timing[params->type]; 1399 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1400 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1401 1402 general_params->adwell_default_social_chn = 1403 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1404 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1405 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1406 1407 /* if custom max budget was configured with debugfs */ 1408 if (IWL_MVM_ADWELL_MAX_BUDGET) 1409 general_params->adwell_max_budget = 1410 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1411 else if (params->ssids && params->ssids[0].ssid_len) 1412 general_params->adwell_max_budget = 1413 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1414 else 1415 general_params->adwell_max_budget = 1416 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1417 1418 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1419 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1420 cpu_to_le32(timing->max_out_time); 1421 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1422 cpu_to_le32(timing->suspend_time); 1423 1424 hb_timing = &scan_timing[params->hb_type]; 1425 1426 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1427 cpu_to_le32(hb_timing->max_out_time); 1428 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1429 cpu_to_le32(hb_timing->suspend_time); 1430 1431 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1432 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1433 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1434 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1435 } 1436 1437 struct iwl_mvm_scan_channel_segment { 1438 u8 start_idx; 1439 u8 end_idx; 1440 u8 first_channel_id; 1441 u8 last_channel_id; 1442 u8 channel_spacing_shift; 1443 u8 band; 1444 }; 1445 1446 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1447 { 1448 .start_idx = 0, 1449 .end_idx = 13, 1450 .first_channel_id = 1, 1451 .last_channel_id = 14, 1452 .channel_spacing_shift = 0, 1453 .band = PHY_BAND_24 1454 }, 1455 { 1456 .start_idx = 14, 1457 .end_idx = 41, 1458 .first_channel_id = 36, 1459 .last_channel_id = 144, 1460 .channel_spacing_shift = 2, 1461 .band = PHY_BAND_5 1462 }, 1463 { 1464 .start_idx = 42, 1465 .end_idx = 50, 1466 .first_channel_id = 149, 1467 .last_channel_id = 181, 1468 .channel_spacing_shift = 2, 1469 .band = PHY_BAND_5 1470 }, 1471 { 1472 .start_idx = 51, 1473 .end_idx = 111, 1474 .first_channel_id = 1, 1475 .last_channel_id = 241, 1476 .channel_spacing_shift = 2, 1477 .band = PHY_BAND_6 1478 }, 1479 }; 1480 1481 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1482 { 1483 int i, index; 1484 1485 if (!channel_id) 1486 return -EINVAL; 1487 1488 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1489 const struct iwl_mvm_scan_channel_segment *ch_segment = 1490 &scan_channel_segments[i]; 1491 u32 ch_offset; 1492 1493 if (ch_segment->band != band || 1494 ch_segment->first_channel_id > channel_id || 1495 ch_segment->last_channel_id < channel_id) 1496 continue; 1497 1498 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1499 ch_segment->channel_spacing_shift; 1500 1501 index = scan_channel_segments[i].start_idx + ch_offset; 1502 if (index < IWL_SCAN_NUM_CHANNELS) 1503 return index; 1504 1505 break; 1506 } 1507 1508 return -EINVAL; 1509 } 1510 1511 static const u8 p2p_go_friendly_chs[] = { 1512 36, 40, 44, 48, 149, 153, 157, 161, 165, 1513 }; 1514 1515 static const u8 social_chs[] = { 1516 1, 6, 11 1517 }; 1518 1519 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1520 u8 ch_id, u8 band, u8 *ch_bitmap, 1521 size_t bitmap_n_entries) 1522 { 1523 int i; 1524 1525 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1526 return; 1527 1528 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1529 if (p2p_go_friendly_chs[i] == ch_id) { 1530 int ch_idx, bitmap_idx; 1531 1532 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1533 if (ch_idx < 0) 1534 return; 1535 1536 bitmap_idx = ch_idx / 8; 1537 if (bitmap_idx >= bitmap_n_entries) 1538 return; 1539 1540 ch_idx = ch_idx % 8; 1541 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1542 1543 return; 1544 } 1545 } 1546 } 1547 1548 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1549 { 1550 int i; 1551 u32 flags = 0; 1552 1553 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1554 goto out; 1555 1556 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1557 if (p2p_go_friendly_chs[i] == ch_id) { 1558 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1559 break; 1560 } 1561 } 1562 1563 if (flags) 1564 goto out; 1565 1566 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1567 if (social_chs[i] == ch_id) { 1568 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1569 break; 1570 } 1571 } 1572 1573 out: 1574 return flags; 1575 } 1576 1577 static void 1578 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1579 struct ieee80211_channel **channels, 1580 int n_channels, u32 flags, 1581 struct iwl_scan_channel_cfg_umac *channel_cfg) 1582 { 1583 int i; 1584 1585 for (i = 0; i < n_channels; i++) { 1586 channel_cfg[i].flags = cpu_to_le32(flags); 1587 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1588 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1589 enum nl80211_band band = channels[i]->band; 1590 1591 channel_cfg[i].v2.band = 1592 iwl_mvm_phy_band_from_nl80211(band); 1593 channel_cfg[i].v2.iter_count = 1; 1594 channel_cfg[i].v2.iter_interval = 0; 1595 } else { 1596 channel_cfg[i].v1.iter_count = 1; 1597 channel_cfg[i].v1.iter_interval = 0; 1598 } 1599 } 1600 } 1601 1602 static void 1603 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1604 struct ieee80211_channel **channels, 1605 struct iwl_scan_channel_params_v4 *cp, 1606 int n_channels, u32 flags, 1607 enum nl80211_iftype vif_type) 1608 { 1609 u8 *bitmap = cp->adwell_ch_override_bitmap; 1610 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1611 int i; 1612 1613 for (i = 0; i < n_channels; i++) { 1614 enum nl80211_band band = channels[i]->band; 1615 struct iwl_scan_channel_cfg_umac *cfg = 1616 &cp->channel_config[i]; 1617 1618 cfg->flags = cpu_to_le32(flags); 1619 cfg->v2.channel_num = channels[i]->hw_value; 1620 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1621 cfg->v2.iter_count = 1; 1622 cfg->v2.iter_interval = 0; 1623 1624 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1625 cfg->v2.channel_num, 1626 cfg->v2.band, bitmap, 1627 bitmap_n_entries); 1628 } 1629 } 1630 1631 static void 1632 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1633 struct ieee80211_channel **channels, 1634 struct iwl_scan_channel_params_v6 *cp, 1635 int n_channels, u32 flags, 1636 enum nl80211_iftype vif_type) 1637 { 1638 int i; 1639 1640 for (i = 0; i < n_channels; i++) { 1641 enum nl80211_band band = channels[i]->band; 1642 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1643 u32 n_aps_flag = 1644 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1645 cfg->v2.channel_num); 1646 1647 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1648 cfg->v2.channel_num = channels[i]->hw_value; 1649 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1650 if (cfg80211_channel_is_psc(channels[i])) 1651 cfg->flags = 0; 1652 cfg->v2.iter_count = 1; 1653 cfg->v2.iter_interval = 0; 1654 } 1655 } 1656 1657 static int 1658 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm_scan_params *params, 1659 __le32 *cmd_short_ssid, u8 *cmd_bssid, 1660 u8 *scan_ssid_num, u8 *bssid_num) 1661 { 1662 int j, idex_s = 0, idex_b = 0; 1663 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1664 params->scan_6ghz_params; 1665 1666 if (!params->n_6ghz_params) { 1667 for (j = 0; j < params->n_ssids; j++) { 1668 cmd_short_ssid[idex_s++] = 1669 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1670 params->ssids[j].ssid_len)); 1671 (*scan_ssid_num)++; 1672 } 1673 return 0; 1674 } 1675 1676 /* 1677 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1678 * collocated parameters. This might not be optimal, as this processing 1679 * does not (yet) correspond to the actual channels, so it is possible 1680 * that some entries would be left out. 1681 * 1682 * TODO: improve this logic. 1683 */ 1684 for (j = 0; j < params->n_6ghz_params; j++) { 1685 int k; 1686 1687 /* First, try to place the short SSID */ 1688 if (scan_6ghz_params[j].short_ssid_valid) { 1689 for (k = 0; k < idex_s; k++) { 1690 if (cmd_short_ssid[k] == 1691 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1692 break; 1693 } 1694 1695 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1696 cmd_short_ssid[idex_s++] = 1697 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1698 (*scan_ssid_num)++; 1699 } 1700 } 1701 1702 /* try to place BSSID for the same entry */ 1703 for (k = 0; k < idex_b; k++) { 1704 if (!memcmp(&cmd_bssid[ETH_ALEN * k], 1705 scan_6ghz_params[j].bssid, ETH_ALEN)) 1706 break; 1707 } 1708 1709 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1710 memcpy(&cmd_bssid[ETH_ALEN * idex_b++], 1711 scan_6ghz_params[j].bssid, ETH_ALEN); 1712 (*bssid_num)++; 1713 } 1714 } 1715 return 0; 1716 } 1717 1718 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1719 static void 1720 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm_scan_params *params, 1721 u32 n_channels, __le32 *cmd_short_ssid, 1722 u8 *cmd_bssid, u8 scan_ssid_num, 1723 u8 bssid_num, 1724 struct iwl_scan_channel_params_v6 *cp, 1725 enum nl80211_iftype vif_type) 1726 { 1727 struct iwl_scan_channel_cfg_umac *channel_cfg = cp->channel_config; 1728 int i; 1729 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1730 params->scan_6ghz_params; 1731 1732 for (i = 0; i < params->n_channels; i++) { 1733 struct iwl_scan_channel_cfg_umac *cfg = 1734 &cp->channel_config[i]; 1735 1736 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1737 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1738 bool force_passive, found = false, 1739 unsolicited_probe_on_chan = false, psc_no_listen = false; 1740 1741 cfg->v1.channel_num = params->channels[i]->hw_value; 1742 cfg->v2.band = 2; 1743 cfg->v2.iter_count = 1; 1744 cfg->v2.iter_interval = 0; 1745 1746 /* 1747 * The optimize the scan time, i.e., reduce the scan dwell time 1748 * on each channel, the below logic tries to set 3 direct BSSID 1749 * probe requests for each broadcast probe request with a short 1750 * SSID. 1751 * TODO: improve this logic 1752 */ 1753 n_used_bssid_entries = 3; 1754 for (j = 0; j < params->n_6ghz_params; j++) { 1755 if (!(scan_6ghz_params[j].channel_idx == i)) 1756 continue; 1757 1758 found = false; 1759 unsolicited_probe_on_chan |= 1760 scan_6ghz_params[j].unsolicited_probe; 1761 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1762 1763 for (k = 0; k < scan_ssid_num; k++) { 1764 if (!scan_6ghz_params[j].unsolicited_probe && 1765 le32_to_cpu(cmd_short_ssid[k]) == 1766 scan_6ghz_params[j].short_ssid) { 1767 /* Relevant short SSID bit set */ 1768 if (s_ssid_bitmap & BIT(k)) { 1769 found = true; 1770 break; 1771 } 1772 1773 /* 1774 * Use short SSID only to create a new 1775 * iteration during channel dwell. 1776 */ 1777 if (n_used_bssid_entries >= 3) { 1778 s_ssid_bitmap |= BIT(k); 1779 s_max++; 1780 n_used_bssid_entries -= 3; 1781 found = true; 1782 break; 1783 } 1784 } 1785 } 1786 1787 if (found) 1788 continue; 1789 1790 for (k = 0; k < bssid_num; k++) { 1791 if (!memcmp(&cmd_bssid[ETH_ALEN * k], 1792 scan_6ghz_params[j].bssid, 1793 ETH_ALEN)) { 1794 if (!(bssid_bitmap & BIT(k))) { 1795 bssid_bitmap |= BIT(k); 1796 b_max++; 1797 n_used_bssid_entries++; 1798 } 1799 break; 1800 } 1801 } 1802 } 1803 1804 flags = bssid_bitmap | (s_ssid_bitmap << 16); 1805 1806 if (cfg80211_channel_is_psc(params->channels[i]) && 1807 psc_no_listen) 1808 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1809 1810 if (unsolicited_probe_on_chan) 1811 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1812 1813 /* 1814 * In the following cases apply passive scan: 1815 * 1. Non fragmented scan: 1816 * - PSC channel with NO_LISTEN_FLAG on should be treated 1817 * like non PSC channel 1818 * - Non PSC channel with more than 3 short SSIDs or more 1819 * than 9 BSSIDs. 1820 * - Non PSC Channel with unsolicited probe response and 1821 * more than 2 short SSIDs or more than 6 BSSIDs. 1822 * - PSC channel with more than 2 short SSIDs or more than 1823 * 6 BSSIDs. 1824 * 3. Fragmented scan: 1825 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1826 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1827 * - Non PSC channel with unsolicited probe response and 1828 * more than 1 SSID or more than 3 BSSIDs. 1829 */ 1830 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1831 if (!cfg80211_channel_is_psc(params->channels[i]) || 1832 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1833 force_passive = (s_max > 3 || b_max > 9); 1834 force_passive |= (unsolicited_probe_on_chan && 1835 (s_max > 2 || b_max > 6)); 1836 } else { 1837 force_passive = (s_max > 2 || b_max > 6); 1838 } 1839 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1840 force_passive = (s_max > 1 || b_max > 3); 1841 } else { 1842 force_passive = (s_max > 2 || b_max > 6); 1843 force_passive |= (unsolicited_probe_on_chan && 1844 (s_max > 1 || b_max > 3)); 1845 } 1846 if (force_passive || 1847 (!flags && !cfg80211_channel_is_psc(params->channels[i]))) 1848 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1849 1850 channel_cfg[i].flags |= cpu_to_le32(flags); 1851 } 1852 } 1853 1854 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1855 struct iwl_mvm_scan_params *params, 1856 struct ieee80211_vif *vif) 1857 { 1858 u8 flags = 0; 1859 1860 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1861 1862 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1863 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1864 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1865 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1866 1867 /* set fragmented ebs for fragmented scan on HB channels */ 1868 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1869 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1870 1871 return flags; 1872 } 1873 1874 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 1875 struct iwl_mvm_scan_params *params, 1876 struct ieee80211_vif *vif, 1877 int type) 1878 { 1879 u16 flags = 0; 1880 1881 if (params->n_ssids == 0) 1882 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 1883 1884 if (iwl_mvm_is_scan_fragmented(params->type)) 1885 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 1886 1887 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1888 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 1889 1890 if (params->pass_all) 1891 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 1892 else 1893 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 1894 1895 if (!iwl_mvm_is_regular_scan(params)) 1896 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 1897 1898 if (params->iter_notif || 1899 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1900 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 1901 1902 if (IWL_MVM_ADWELL_ENABLE) 1903 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 1904 1905 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1906 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 1907 1908 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 1909 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 1910 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 1911 1912 return flags; 1913 } 1914 1915 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1916 struct iwl_mvm_scan_params *params, 1917 struct ieee80211_vif *vif) 1918 { 1919 u16 flags = 0; 1920 1921 if (params->n_ssids == 0) 1922 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1923 1924 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1925 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1926 1927 if (iwl_mvm_is_scan_fragmented(params->type)) 1928 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1929 1930 if (iwl_mvm_is_cdb_supported(mvm) && 1931 iwl_mvm_is_scan_fragmented(params->hb_type)) 1932 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1933 1934 if (iwl_mvm_rrm_scan_needed(mvm) && 1935 fw_has_capa(&mvm->fw->ucode_capa, 1936 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1937 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1938 1939 if (params->pass_all) 1940 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1941 else 1942 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1943 1944 if (!iwl_mvm_is_regular_scan(params)) 1945 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1946 1947 if (params->iter_notif) 1948 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1949 1950 #ifdef CONFIG_IWLWIFI_DEBUGFS 1951 if (mvm->scan_iter_notif_enabled) 1952 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1953 #endif 1954 1955 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1956 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1957 1958 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 1959 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1960 1961 /* 1962 * Extended dwell is relevant only for low band to start with, as it is 1963 * being used for social channles only (1, 6, 11), so we can check 1964 * only scan type on low band also for CDB. 1965 */ 1966 if (iwl_mvm_is_regular_scan(params) && 1967 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1968 !iwl_mvm_is_scan_fragmented(params->type) && 1969 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1970 !iwl_mvm_is_oce_supported(mvm)) 1971 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1972 1973 if (iwl_mvm_is_oce_supported(mvm)) { 1974 if ((params->flags & 1975 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1976 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1977 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1978 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1979 * the same bit, we need to make sure that we use this bit here 1980 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1981 * used. */ 1982 if ((params->flags & 1983 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1984 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1985 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1986 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1987 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1988 } 1989 1990 return flags; 1991 } 1992 1993 static int 1994 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 1995 struct iwl_scan_umac_schedule *schedule, 1996 __le16 *delay) 1997 { 1998 int i; 1999 if (WARN_ON(!params->n_scan_plans || 2000 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2001 return -EINVAL; 2002 2003 for (i = 0; i < params->n_scan_plans; i++) { 2004 struct cfg80211_sched_scan_plan *scan_plan = 2005 ¶ms->scan_plans[i]; 2006 2007 schedule[i].iter_count = scan_plan->iterations; 2008 schedule[i].interval = 2009 cpu_to_le16(scan_plan->interval); 2010 } 2011 2012 /* 2013 * If the number of iterations of the last scan plan is set to 2014 * zero, it should run infinitely. However, this is not always the case. 2015 * For example, when regular scan is requested the driver sets one scan 2016 * plan with one iteration. 2017 */ 2018 if (!schedule[params->n_scan_plans - 1].iter_count) 2019 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2020 2021 *delay = cpu_to_le16(params->delay); 2022 2023 return 0; 2024 } 2025 2026 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2027 struct iwl_mvm_scan_params *params, 2028 int type, int uid) 2029 { 2030 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2031 struct iwl_scan_umac_chan_param *chan_param; 2032 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2033 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2034 mvm->fw->ucode_capa.n_scan_channels; 2035 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2036 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2037 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2038 struct iwl_ssid_ie *direct_scan; 2039 int ret = 0; 2040 u32 ssid_bitmap = 0; 2041 u8 channel_flags = 0; 2042 u16 gen_flags; 2043 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2044 2045 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2046 2047 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2048 2049 mvm->scan_uid_status[uid] = type; 2050 2051 cmd->uid = cpu_to_le32(uid); 2052 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2053 cmd->general_flags = cpu_to_le16(gen_flags); 2054 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2055 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2056 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2057 IWL_SCAN_NUM_OF_FRAGS; 2058 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2059 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2060 IWL_SCAN_NUM_OF_FRAGS; 2061 2062 cmd->v8.general_flags2 = 2063 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2064 } 2065 2066 cmd->scan_start_mac_id = scan_vif->id; 2067 2068 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2069 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2070 2071 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2072 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2073 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2074 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2075 2076 /* set fragmented ebs for fragmented scan on HB channels */ 2077 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2078 if (gen_flags & 2079 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2080 (!iwl_mvm_is_cdb_supported(mvm) && 2081 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2082 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2083 } 2084 } 2085 2086 chan_param->flags = channel_flags; 2087 chan_param->count = params->n_channels; 2088 2089 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2090 &tail_v2->delay); 2091 if (ret) { 2092 mvm->scan_uid_status[uid] = 0; 2093 return ret; 2094 } 2095 2096 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2097 tail_v2->preq = params->preq; 2098 direct_scan = tail_v2->direct_scan; 2099 } else { 2100 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2101 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2102 ¶ms->preq); 2103 direct_scan = tail_v1->direct_scan; 2104 } 2105 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2106 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2107 params->n_channels, ssid_bitmap, 2108 cmd_data); 2109 return 0; 2110 } 2111 2112 static void 2113 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, 2114 struct iwl_mvm_scan_params *params, 2115 struct ieee80211_vif *vif, 2116 struct iwl_scan_general_params_v10 *gp, 2117 u16 gen_flags) 2118 { 2119 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2120 2121 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); 2122 2123 gp->flags = cpu_to_le16(gen_flags); 2124 2125 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2126 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2127 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2128 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2129 2130 gp->scan_start_mac_id = scan_vif->id; 2131 } 2132 2133 static void 2134 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2135 struct iwl_scan_probe_params_v3 *pp) 2136 { 2137 pp->preq = params->preq; 2138 pp->ssid_num = params->n_ssids; 2139 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2140 } 2141 2142 static void 2143 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2144 struct iwl_scan_probe_params_v4 *pp, 2145 u32 *bitmap_ssid) 2146 { 2147 pp->preq = params->preq; 2148 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2149 } 2150 2151 static void 2152 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2153 struct iwl_mvm_scan_params *params, 2154 struct ieee80211_vif *vif, 2155 struct iwl_scan_channel_params_v4 *cp, 2156 u32 channel_cfg_flags) 2157 { 2158 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2159 cp->count = params->n_channels; 2160 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2161 2162 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2163 params->n_channels, 2164 channel_cfg_flags, 2165 vif->type); 2166 } 2167 2168 static void 2169 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2170 struct iwl_mvm_scan_params *params, 2171 struct ieee80211_vif *vif, 2172 struct iwl_scan_channel_params_v6 *cp, 2173 u32 channel_cfg_flags) 2174 { 2175 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2176 cp->count = params->n_channels; 2177 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2178 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2179 2180 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2181 params->n_channels, 2182 channel_cfg_flags, 2183 vif->type); 2184 } 2185 2186 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2187 struct iwl_mvm_scan_params *params, int type, 2188 int uid) 2189 { 2190 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2191 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2192 int ret; 2193 u16 gen_flags; 2194 2195 mvm->scan_uid_status[uid] = type; 2196 2197 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2198 cmd->uid = cpu_to_le32(uid); 2199 2200 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2201 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2202 &scan_p->general_params, 2203 gen_flags); 2204 2205 ret = iwl_mvm_fill_scan_sched_params(params, 2206 scan_p->periodic_params.schedule, 2207 &scan_p->periodic_params.delay); 2208 if (ret) 2209 return ret; 2210 2211 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2212 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2213 &scan_p->channel_params, 0); 2214 2215 return 0; 2216 } 2217 2218 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2219 struct iwl_mvm_scan_params *params, int type, 2220 int uid) 2221 { 2222 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd; 2223 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params; 2224 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2225 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2226 int ret; 2227 u16 gen_flags; 2228 u32 bitmap_ssid = 0; 2229 2230 mvm->scan_uid_status[uid] = type; 2231 2232 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2233 cmd->uid = cpu_to_le32(uid); 2234 2235 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2236 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2237 &scan_p->general_params, 2238 gen_flags); 2239 2240 ret = iwl_mvm_fill_scan_sched_params(params, 2241 scan_p->periodic_params.schedule, 2242 &scan_p->periodic_params.delay); 2243 if (ret) 2244 return ret; 2245 2246 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2247 &bitmap_ssid); 2248 if (!params->scan_6ghz) { 2249 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2250 &scan_p->channel_params, bitmap_ssid); 2251 2252 return 0; 2253 } 2254 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2255 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2256 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2257 2258 ret = iwl_mvm_umac_scan_fill_6g_chan_list(params, pb->short_ssid, 2259 pb->bssid_array[0], 2260 &pb->short_ssid_num, 2261 &pb->bssid_num); 2262 if (ret) 2263 return ret; 2264 2265 iwl_mvm_umac_scan_cfg_channels_v6_6g(params, 2266 params->n_channels, 2267 pb->short_ssid, 2268 pb->bssid_array[0], 2269 pb->short_ssid_num, 2270 pb->bssid_num, cp, 2271 vif->type); 2272 cp->count = params->n_channels; 2273 if (!params->n_ssids || 2274 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2275 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2276 2277 return 0; 2278 } 2279 2280 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2281 { 2282 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2283 } 2284 2285 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2286 { 2287 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2288 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2289 2290 /* This looks a bit arbitrary, but the idea is that if we run 2291 * out of possible simultaneous scans and the userspace is 2292 * trying to run a scan type that is already running, we 2293 * return -EBUSY. But if the userspace wants to start a 2294 * different type of scan, we stop the opposite type to make 2295 * space for the new request. The reason is backwards 2296 * compatibility with old wpa_supplicant that wouldn't stop a 2297 * scheduled scan before starting a normal scan. 2298 */ 2299 2300 /* FW supports only a single periodic scan */ 2301 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2302 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2303 return -EBUSY; 2304 2305 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2306 return 0; 2307 2308 /* Use a switch, even though this is a bitmask, so that more 2309 * than one bits set will fall in default and we will warn. 2310 */ 2311 switch (type) { 2312 case IWL_MVM_SCAN_REGULAR: 2313 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2314 return -EBUSY; 2315 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2316 case IWL_MVM_SCAN_SCHED: 2317 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2318 return -EBUSY; 2319 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2320 case IWL_MVM_SCAN_NETDETECT: 2321 /* For non-unified images, there's no need to stop 2322 * anything for net-detect since the firmware is 2323 * restarted anyway. This way, any sched scans that 2324 * were running will be restarted when we resume. 2325 */ 2326 if (!unified_image) 2327 return 0; 2328 2329 /* If this is a unified image and we ran out of scans, 2330 * we need to stop something. Prefer stopping regular 2331 * scans, because the results are useless at this 2332 * point, and we should be able to keep running 2333 * another scheduled scan while suspended. 2334 */ 2335 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2336 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2337 true); 2338 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2339 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2340 true); 2341 /* Something is wrong if no scan was running but we 2342 * ran out of scans. 2343 */ 2344 fallthrough; 2345 default: 2346 WARN_ON(1); 2347 break; 2348 } 2349 2350 return -EIO; 2351 } 2352 2353 #define SCAN_TIMEOUT 20000 2354 2355 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2356 { 2357 struct delayed_work *delayed_work = to_delayed_work(work); 2358 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2359 scan_timeout_dwork); 2360 2361 IWL_ERR(mvm, "regular scan timed out\n"); 2362 2363 iwl_force_nmi(mvm->trans); 2364 } 2365 2366 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2367 struct iwl_mvm_scan_params *params, 2368 struct ieee80211_vif *vif) 2369 { 2370 if (iwl_mvm_is_cdb_supported(mvm)) { 2371 params->type = 2372 iwl_mvm_get_scan_type_band(mvm, vif, 2373 NL80211_BAND_2GHZ); 2374 params->hb_type = 2375 iwl_mvm_get_scan_type_band(mvm, vif, 2376 NL80211_BAND_5GHZ); 2377 } else { 2378 params->type = iwl_mvm_get_scan_type(mvm, vif); 2379 } 2380 } 2381 2382 struct iwl_scan_umac_handler { 2383 u8 version; 2384 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2385 struct iwl_mvm_scan_params *params, int type, int uid); 2386 }; 2387 2388 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2389 .version = _ver, \ 2390 .handler = iwl_mvm_scan_umac_v##_ver, \ 2391 } 2392 2393 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2394 /* set the newest version first to shorten the list traverse time */ 2395 IWL_SCAN_UMAC_HANDLER(14), 2396 IWL_SCAN_UMAC_HANDLER(12), 2397 }; 2398 2399 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2400 struct ieee80211_vif *vif, 2401 struct iwl_host_cmd *hcmd, 2402 struct iwl_mvm_scan_params *params, 2403 int type) 2404 { 2405 int uid, i, err; 2406 u8 scan_ver; 2407 2408 lockdep_assert_held(&mvm->mutex); 2409 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2410 2411 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2412 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2413 2414 return iwl_mvm_scan_lmac(mvm, vif, params); 2415 } 2416 2417 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2418 if (uid < 0) 2419 return uid; 2420 2421 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2422 2423 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2424 SCAN_REQ_UMAC, 2425 IWL_FW_CMD_VER_UNKNOWN); 2426 2427 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2428 const struct iwl_scan_umac_handler *ver_handler = 2429 &iwl_scan_umac_handlers[i]; 2430 2431 if (ver_handler->version != scan_ver) 2432 continue; 2433 2434 return ver_handler->handler(mvm, vif, params, type, uid); 2435 } 2436 2437 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2438 if (err) 2439 return err; 2440 2441 return uid; 2442 } 2443 2444 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2445 struct cfg80211_scan_request *req, 2446 struct ieee80211_scan_ies *ies) 2447 { 2448 struct iwl_host_cmd hcmd = { 2449 .len = { iwl_mvm_scan_size(mvm), }, 2450 .data = { mvm->scan_cmd, }, 2451 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2452 }; 2453 struct iwl_mvm_scan_params params = {}; 2454 int ret, uid; 2455 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2456 2457 lockdep_assert_held(&mvm->mutex); 2458 2459 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2460 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2461 return -EBUSY; 2462 } 2463 2464 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2465 if (ret) 2466 return ret; 2467 2468 /* we should have failed registration if scan_cmd was NULL */ 2469 if (WARN_ON(!mvm->scan_cmd)) 2470 return -ENOMEM; 2471 2472 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2473 return -ENOBUFS; 2474 2475 params.n_ssids = req->n_ssids; 2476 params.flags = req->flags; 2477 params.n_channels = req->n_channels; 2478 params.delay = 0; 2479 params.ssids = req->ssids; 2480 params.channels = req->channels; 2481 params.mac_addr = req->mac_addr; 2482 params.mac_addr_mask = req->mac_addr_mask; 2483 params.no_cck = req->no_cck; 2484 params.pass_all = true; 2485 params.n_match_sets = 0; 2486 params.match_sets = NULL; 2487 2488 params.scan_plans = &scan_plan; 2489 params.n_scan_plans = 1; 2490 2491 params.n_6ghz_params = req->n_6ghz_params; 2492 params.scan_6ghz_params = req->scan_6ghz_params; 2493 params.scan_6ghz = req->scan_6ghz; 2494 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2495 2496 if (req->duration) 2497 params.iter_notif = true; 2498 2499 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2500 2501 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2502 IWL_MVM_SCAN_REGULAR); 2503 2504 if (uid < 0) 2505 return uid; 2506 2507 iwl_mvm_pause_tcm(mvm, false); 2508 2509 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2510 if (ret) { 2511 /* If the scan failed, it usually means that the FW was unable 2512 * to allocate the time events. Warn on it, but maybe we 2513 * should try to send the command again with different params. 2514 */ 2515 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2516 iwl_mvm_resume_tcm(mvm); 2517 mvm->scan_uid_status[uid] = 0; 2518 return ret; 2519 } 2520 2521 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2522 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2523 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2524 2525 schedule_delayed_work(&mvm->scan_timeout_dwork, 2526 msecs_to_jiffies(SCAN_TIMEOUT)); 2527 2528 return 0; 2529 } 2530 2531 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2532 struct ieee80211_vif *vif, 2533 struct cfg80211_sched_scan_request *req, 2534 struct ieee80211_scan_ies *ies, 2535 int type) 2536 { 2537 struct iwl_host_cmd hcmd = { 2538 .len = { iwl_mvm_scan_size(mvm), }, 2539 .data = { mvm->scan_cmd, }, 2540 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2541 }; 2542 struct iwl_mvm_scan_params params = {}; 2543 int ret, uid; 2544 int i, j; 2545 bool non_psc_included = false; 2546 2547 lockdep_assert_held(&mvm->mutex); 2548 2549 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2550 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2551 return -EBUSY; 2552 } 2553 2554 ret = iwl_mvm_check_running_scans(mvm, type); 2555 if (ret) 2556 return ret; 2557 2558 /* we should have failed registration if scan_cmd was NULL */ 2559 if (WARN_ON(!mvm->scan_cmd)) 2560 return -ENOMEM; 2561 2562 2563 params.n_ssids = req->n_ssids; 2564 params.flags = req->flags; 2565 params.n_channels = req->n_channels; 2566 params.ssids = req->ssids; 2567 params.channels = req->channels; 2568 params.mac_addr = req->mac_addr; 2569 params.mac_addr_mask = req->mac_addr_mask; 2570 params.no_cck = false; 2571 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2572 params.n_match_sets = req->n_match_sets; 2573 params.match_sets = req->match_sets; 2574 if (!req->n_scan_plans) 2575 return -EINVAL; 2576 2577 params.n_scan_plans = req->n_scan_plans; 2578 params.scan_plans = req->scan_plans; 2579 2580 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2581 2582 /* In theory, LMAC scans can handle a 32-bit delay, but since 2583 * waiting for over 18 hours to start the scan is a bit silly 2584 * and to keep it aligned with UMAC scans (which only support 2585 * 16-bit delays), trim it down to 16-bits. 2586 */ 2587 if (req->delay > U16_MAX) { 2588 IWL_DEBUG_SCAN(mvm, 2589 "delay value is > 16-bits, set to max possible\n"); 2590 params.delay = U16_MAX; 2591 } else { 2592 params.delay = req->delay; 2593 } 2594 2595 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2596 if (ret) 2597 return ret; 2598 2599 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2600 2601 /* for 6 GHZ band only PSC channels need to be added */ 2602 for (i = 0; i < params.n_channels; i++) { 2603 struct ieee80211_channel *channel = params.channels[i]; 2604 2605 if (channel->band == NL80211_BAND_6GHZ && 2606 !cfg80211_channel_is_psc(channel)) { 2607 non_psc_included = true; 2608 break; 2609 } 2610 } 2611 2612 if (non_psc_included) { 2613 params.channels = kmemdup(params.channels, 2614 sizeof(params.channels[0]) * 2615 params.n_channels, 2616 GFP_KERNEL); 2617 if (!params.channels) 2618 return -ENOMEM; 2619 2620 for (i = j = 0; i < params.n_channels; i++) { 2621 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2622 !cfg80211_channel_is_psc(params.channels[i])) 2623 continue; 2624 params.channels[j++] = params.channels[i]; 2625 } 2626 params.n_channels = j; 2627 } 2628 2629 if (non_psc_included && 2630 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2631 kfree(params.channels); 2632 return -ENOBUFS; 2633 } 2634 2635 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2636 2637 if (non_psc_included) 2638 kfree(params.channels); 2639 if (uid < 0) 2640 return uid; 2641 2642 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2643 if (!ret) { 2644 IWL_DEBUG_SCAN(mvm, 2645 "Sched scan request was sent successfully\n"); 2646 mvm->scan_status |= type; 2647 } else { 2648 /* If the scan failed, it usually means that the FW was unable 2649 * to allocate the time events. Warn on it, but maybe we 2650 * should try to send the command again with different params. 2651 */ 2652 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2653 mvm->scan_uid_status[uid] = 0; 2654 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2655 } 2656 2657 return ret; 2658 } 2659 2660 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2661 struct iwl_rx_cmd_buffer *rxb) 2662 { 2663 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2664 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2665 u32 uid = __le32_to_cpu(notif->uid); 2666 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2667 2668 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2669 return; 2670 2671 /* if the scan is already stopping, we don't need to notify mac80211 */ 2672 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2673 struct cfg80211_scan_info info = { 2674 .aborted = aborted, 2675 .scan_start_tsf = mvm->scan_start, 2676 }; 2677 2678 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2679 ieee80211_scan_completed(mvm->hw, &info); 2680 mvm->scan_vif = NULL; 2681 cancel_delayed_work(&mvm->scan_timeout_dwork); 2682 iwl_mvm_resume_tcm(mvm); 2683 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2684 ieee80211_sched_scan_stopped(mvm->hw); 2685 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2686 } 2687 2688 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2689 IWL_DEBUG_SCAN(mvm, 2690 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2691 uid, mvm->scan_uid_status[uid], 2692 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2693 "completed" : "aborted", 2694 iwl_mvm_ebs_status_str(notif->ebs_status)); 2695 IWL_DEBUG_SCAN(mvm, 2696 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2697 notif->last_schedule, notif->last_iter, 2698 __le32_to_cpu(notif->time_from_last_iter)); 2699 2700 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2701 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2702 mvm->last_ebs_successful = false; 2703 2704 mvm->scan_uid_status[uid] = 0; 2705 } 2706 2707 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2708 struct iwl_rx_cmd_buffer *rxb) 2709 { 2710 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2711 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2712 2713 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2714 2715 IWL_DEBUG_SCAN(mvm, 2716 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2717 notif->status, notif->scanned_channels); 2718 2719 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2720 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2721 ieee80211_sched_scan_results(mvm->hw); 2722 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2723 } 2724 2725 IWL_DEBUG_SCAN(mvm, 2726 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2727 mvm->scan_start); 2728 } 2729 2730 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2731 { 2732 struct iwl_umac_scan_abort cmd = {}; 2733 int uid, ret; 2734 2735 lockdep_assert_held(&mvm->mutex); 2736 2737 /* We should always get a valid index here, because we already 2738 * checked that this type of scan was running in the generic 2739 * code. 2740 */ 2741 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2742 if (WARN_ON_ONCE(uid < 0)) 2743 return uid; 2744 2745 cmd.uid = cpu_to_le32(uid); 2746 2747 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2748 2749 ret = iwl_mvm_send_cmd_pdu(mvm, 2750 iwl_cmd_id(SCAN_ABORT_UMAC, 2751 IWL_ALWAYS_LONG_GROUP, 0), 2752 0, sizeof(cmd), &cmd); 2753 if (!ret) 2754 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2755 2756 return ret; 2757 } 2758 2759 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2760 { 2761 struct iwl_notification_wait wait_scan_done; 2762 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2763 SCAN_OFFLOAD_COMPLETE, }; 2764 int ret; 2765 2766 lockdep_assert_held(&mvm->mutex); 2767 2768 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2769 scan_done_notif, 2770 ARRAY_SIZE(scan_done_notif), 2771 NULL, NULL); 2772 2773 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2774 2775 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2776 ret = iwl_mvm_umac_scan_abort(mvm, type); 2777 else 2778 ret = iwl_mvm_lmac_scan_abort(mvm); 2779 2780 if (ret) { 2781 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2782 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2783 return ret; 2784 } 2785 2786 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2787 1 * HZ); 2788 } 2789 2790 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ 2791 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ 2792 } 2793 2794 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2795 { 2796 switch (scan_ver) { 2797 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14); 2798 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); 2799 } 2800 2801 return 0; 2802 } 2803 2804 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2805 { 2806 int base_size, tail_size; 2807 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2808 SCAN_REQ_UMAC, 2809 IWL_FW_CMD_VER_UNKNOWN); 2810 2811 base_size = iwl_scan_req_umac_get_size(scan_ver); 2812 if (base_size) 2813 return base_size; 2814 2815 2816 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2817 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2818 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2819 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2820 else if (iwl_mvm_cdb_scan_api(mvm)) 2821 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2822 else 2823 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2824 2825 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2826 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2827 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2828 else 2829 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2830 2831 return base_size + 2832 sizeof(struct iwl_scan_channel_cfg_umac) * 2833 mvm->fw->ucode_capa.n_scan_channels + 2834 tail_size; 2835 } 2836 return sizeof(struct iwl_scan_req_lmac) + 2837 sizeof(struct iwl_scan_channel_cfg_lmac) * 2838 mvm->fw->ucode_capa.n_scan_channels + 2839 sizeof(struct iwl_scan_probe_req_v1); 2840 } 2841 2842 /* 2843 * This function is used in nic restart flow, to inform mac80211 about scans 2844 * that was aborted by restart flow or by an assert. 2845 */ 2846 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2847 { 2848 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2849 int uid, i; 2850 2851 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2852 if (uid >= 0) { 2853 struct cfg80211_scan_info info = { 2854 .aborted = true, 2855 }; 2856 2857 ieee80211_scan_completed(mvm->hw, &info); 2858 mvm->scan_uid_status[uid] = 0; 2859 } 2860 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2861 if (uid >= 0 && !mvm->fw_restart) { 2862 ieee80211_sched_scan_stopped(mvm->hw); 2863 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2864 mvm->scan_uid_status[uid] = 0; 2865 } 2866 uid = iwl_mvm_scan_uid_by_status(mvm, 2867 IWL_MVM_SCAN_STOPPING_REGULAR); 2868 if (uid >= 0) 2869 mvm->scan_uid_status[uid] = 0; 2870 2871 uid = iwl_mvm_scan_uid_by_status(mvm, 2872 IWL_MVM_SCAN_STOPPING_SCHED); 2873 if (uid >= 0) 2874 mvm->scan_uid_status[uid] = 0; 2875 2876 /* We shouldn't have any UIDs still set. Loop over all the 2877 * UIDs to make sure there's nothing left there and warn if 2878 * any is found. 2879 */ 2880 for (i = 0; i < mvm->max_scans; i++) { 2881 if (WARN_ONCE(mvm->scan_uid_status[i], 2882 "UMAC scan UID %d status was not cleaned\n", 2883 i)) 2884 mvm->scan_uid_status[i] = 0; 2885 } 2886 } else { 2887 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2888 struct cfg80211_scan_info info = { 2889 .aborted = true, 2890 }; 2891 2892 ieee80211_scan_completed(mvm->hw, &info); 2893 } 2894 2895 /* Sched scan will be restarted by mac80211 in 2896 * restart_hw, so do not report if FW is about to be 2897 * restarted. 2898 */ 2899 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2900 !mvm->fw_restart) { 2901 ieee80211_sched_scan_stopped(mvm->hw); 2902 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2903 } 2904 } 2905 } 2906 2907 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2908 { 2909 int ret; 2910 2911 if (!(mvm->scan_status & type)) 2912 return 0; 2913 2914 if (iwl_mvm_is_radio_killed(mvm)) { 2915 ret = 0; 2916 goto out; 2917 } 2918 2919 ret = iwl_mvm_scan_stop_wait(mvm, type); 2920 if (!ret) 2921 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2922 out: 2923 /* Clear the scan status so the next scan requests will 2924 * succeed and mark the scan as stopping, so that the Rx 2925 * handler doesn't do anything, as the scan was stopped from 2926 * above. 2927 */ 2928 mvm->scan_status &= ~type; 2929 2930 if (type == IWL_MVM_SCAN_REGULAR) { 2931 cancel_delayed_work(&mvm->scan_timeout_dwork); 2932 if (notify) { 2933 struct cfg80211_scan_info info = { 2934 .aborted = true, 2935 }; 2936 2937 ieee80211_scan_completed(mvm->hw, &info); 2938 } 2939 } else if (notify) { 2940 ieee80211_sched_scan_stopped(mvm->hw); 2941 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2942 } 2943 2944 return ret; 2945 } 2946