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 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1259 SCAN_CFG_CMD, 0) < 5) { 1260 /* 1261 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD 1262 * version 5. 1263 */ 1264 cfg.bcast_sta_id = 0xff; 1265 } 1266 1267 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1268 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1269 1270 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1271 1272 return iwl_mvm_send_cmd(mvm, &cmd); 1273 } 1274 1275 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1276 { 1277 int i; 1278 1279 for (i = 0; i < mvm->max_scans; i++) 1280 if (mvm->scan_uid_status[i] == status) 1281 return i; 1282 1283 return -ENOENT; 1284 } 1285 1286 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1287 struct iwl_scan_req_umac *cmd, 1288 struct iwl_mvm_scan_params *params) 1289 { 1290 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1291 u8 active_dwell, passive_dwell; 1292 1293 timing = &scan_timing[params->type]; 1294 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1295 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1296 1297 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1298 cmd->v7.adwell_default_n_aps_social = 1299 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1300 cmd->v7.adwell_default_n_aps = 1301 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1302 1303 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1304 cmd->v9.adwell_default_hb_n_aps = 1305 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1306 1307 /* if custom max budget was configured with debugfs */ 1308 if (IWL_MVM_ADWELL_MAX_BUDGET) 1309 cmd->v7.adwell_max_budget = 1310 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1311 else if (params->ssids && params->ssids[0].ssid_len) 1312 cmd->v7.adwell_max_budget = 1313 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1314 else 1315 cmd->v7.adwell_max_budget = 1316 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1317 1318 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1319 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1320 cpu_to_le32(timing->max_out_time); 1321 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1322 cpu_to_le32(timing->suspend_time); 1323 1324 if (iwl_mvm_is_cdb_supported(mvm)) { 1325 hb_timing = &scan_timing[params->hb_type]; 1326 1327 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1328 cpu_to_le32(hb_timing->max_out_time); 1329 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1330 cpu_to_le32(hb_timing->suspend_time); 1331 } 1332 1333 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1334 cmd->v7.active_dwell = active_dwell; 1335 cmd->v7.passive_dwell = passive_dwell; 1336 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1337 } else { 1338 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1339 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1340 if (iwl_mvm_is_cdb_supported(mvm)) { 1341 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1342 active_dwell; 1343 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1344 passive_dwell; 1345 } 1346 } 1347 } else { 1348 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1349 cmd->v1.active_dwell = active_dwell; 1350 cmd->v1.passive_dwell = passive_dwell; 1351 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1352 1353 if (iwl_mvm_is_cdb_supported(mvm)) { 1354 hb_timing = &scan_timing[params->hb_type]; 1355 1356 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1357 cpu_to_le32(hb_timing->max_out_time); 1358 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1359 cpu_to_le32(hb_timing->suspend_time); 1360 } 1361 1362 if (iwl_mvm_cdb_scan_api(mvm)) { 1363 cmd->v6.scan_priority = 1364 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1365 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1366 cpu_to_le32(timing->max_out_time); 1367 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1368 cpu_to_le32(timing->suspend_time); 1369 } else { 1370 cmd->v1.scan_priority = 1371 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1372 cmd->v1.max_out_time = 1373 cpu_to_le32(timing->max_out_time); 1374 cmd->v1.suspend_time = 1375 cpu_to_le32(timing->suspend_time); 1376 } 1377 } 1378 1379 if (iwl_mvm_is_regular_scan(params)) 1380 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1381 else 1382 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1383 } 1384 1385 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1386 { 1387 return iwl_mvm_is_regular_scan(params) ? 1388 IWL_SCAN_PRIORITY_EXT_6 : 1389 IWL_SCAN_PRIORITY_EXT_2; 1390 } 1391 1392 static void 1393 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, 1394 struct iwl_scan_general_params_v10 *general_params, 1395 struct iwl_mvm_scan_params *params) 1396 { 1397 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1398 u8 active_dwell, passive_dwell; 1399 1400 timing = &scan_timing[params->type]; 1401 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1402 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1403 1404 general_params->adwell_default_social_chn = 1405 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1406 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1407 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1408 1409 /* if custom max budget was configured with debugfs */ 1410 if (IWL_MVM_ADWELL_MAX_BUDGET) 1411 general_params->adwell_max_budget = 1412 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1413 else if (params->ssids && params->ssids[0].ssid_len) 1414 general_params->adwell_max_budget = 1415 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1416 else 1417 general_params->adwell_max_budget = 1418 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1419 1420 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1421 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1422 cpu_to_le32(timing->max_out_time); 1423 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1424 cpu_to_le32(timing->suspend_time); 1425 1426 hb_timing = &scan_timing[params->hb_type]; 1427 1428 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1429 cpu_to_le32(hb_timing->max_out_time); 1430 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1431 cpu_to_le32(hb_timing->suspend_time); 1432 1433 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1434 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1435 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1436 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1437 } 1438 1439 struct iwl_mvm_scan_channel_segment { 1440 u8 start_idx; 1441 u8 end_idx; 1442 u8 first_channel_id; 1443 u8 last_channel_id; 1444 u8 channel_spacing_shift; 1445 u8 band; 1446 }; 1447 1448 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1449 { 1450 .start_idx = 0, 1451 .end_idx = 13, 1452 .first_channel_id = 1, 1453 .last_channel_id = 14, 1454 .channel_spacing_shift = 0, 1455 .band = PHY_BAND_24 1456 }, 1457 { 1458 .start_idx = 14, 1459 .end_idx = 41, 1460 .first_channel_id = 36, 1461 .last_channel_id = 144, 1462 .channel_spacing_shift = 2, 1463 .band = PHY_BAND_5 1464 }, 1465 { 1466 .start_idx = 42, 1467 .end_idx = 50, 1468 .first_channel_id = 149, 1469 .last_channel_id = 181, 1470 .channel_spacing_shift = 2, 1471 .band = PHY_BAND_5 1472 }, 1473 { 1474 .start_idx = 51, 1475 .end_idx = 111, 1476 .first_channel_id = 1, 1477 .last_channel_id = 241, 1478 .channel_spacing_shift = 2, 1479 .band = PHY_BAND_6 1480 }, 1481 }; 1482 1483 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1484 { 1485 int i, index; 1486 1487 if (!channel_id) 1488 return -EINVAL; 1489 1490 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1491 const struct iwl_mvm_scan_channel_segment *ch_segment = 1492 &scan_channel_segments[i]; 1493 u32 ch_offset; 1494 1495 if (ch_segment->band != band || 1496 ch_segment->first_channel_id > channel_id || 1497 ch_segment->last_channel_id < channel_id) 1498 continue; 1499 1500 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1501 ch_segment->channel_spacing_shift; 1502 1503 index = scan_channel_segments[i].start_idx + ch_offset; 1504 if (index < IWL_SCAN_NUM_CHANNELS) 1505 return index; 1506 1507 break; 1508 } 1509 1510 return -EINVAL; 1511 } 1512 1513 static const u8 p2p_go_friendly_chs[] = { 1514 36, 40, 44, 48, 149, 153, 157, 161, 165, 1515 }; 1516 1517 static const u8 social_chs[] = { 1518 1, 6, 11 1519 }; 1520 1521 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1522 u8 ch_id, u8 band, u8 *ch_bitmap, 1523 size_t bitmap_n_entries) 1524 { 1525 int i; 1526 1527 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1528 return; 1529 1530 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1531 if (p2p_go_friendly_chs[i] == ch_id) { 1532 int ch_idx, bitmap_idx; 1533 1534 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1535 if (ch_idx < 0) 1536 return; 1537 1538 bitmap_idx = ch_idx / 8; 1539 if (bitmap_idx >= bitmap_n_entries) 1540 return; 1541 1542 ch_idx = ch_idx % 8; 1543 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1544 1545 return; 1546 } 1547 } 1548 } 1549 1550 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1551 { 1552 int i; 1553 u32 flags = 0; 1554 1555 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1556 goto out; 1557 1558 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1559 if (p2p_go_friendly_chs[i] == ch_id) { 1560 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1561 break; 1562 } 1563 } 1564 1565 if (flags) 1566 goto out; 1567 1568 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1569 if (social_chs[i] == ch_id) { 1570 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1571 break; 1572 } 1573 } 1574 1575 out: 1576 return flags; 1577 } 1578 1579 static void 1580 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1581 struct ieee80211_channel **channels, 1582 int n_channels, u32 flags, 1583 struct iwl_scan_channel_cfg_umac *channel_cfg) 1584 { 1585 int i; 1586 1587 for (i = 0; i < n_channels; i++) { 1588 channel_cfg[i].flags = cpu_to_le32(flags); 1589 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1590 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1591 enum nl80211_band band = channels[i]->band; 1592 1593 channel_cfg[i].v2.band = 1594 iwl_mvm_phy_band_from_nl80211(band); 1595 channel_cfg[i].v2.iter_count = 1; 1596 channel_cfg[i].v2.iter_interval = 0; 1597 } else { 1598 channel_cfg[i].v1.iter_count = 1; 1599 channel_cfg[i].v1.iter_interval = 0; 1600 } 1601 } 1602 } 1603 1604 static void 1605 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1606 struct ieee80211_channel **channels, 1607 struct iwl_scan_channel_params_v4 *cp, 1608 int n_channels, u32 flags, 1609 enum nl80211_iftype vif_type) 1610 { 1611 u8 *bitmap = cp->adwell_ch_override_bitmap; 1612 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1613 int i; 1614 1615 for (i = 0; i < n_channels; i++) { 1616 enum nl80211_band band = channels[i]->band; 1617 struct iwl_scan_channel_cfg_umac *cfg = 1618 &cp->channel_config[i]; 1619 1620 cfg->flags = cpu_to_le32(flags); 1621 cfg->v2.channel_num = channels[i]->hw_value; 1622 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1623 cfg->v2.iter_count = 1; 1624 cfg->v2.iter_interval = 0; 1625 1626 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1627 cfg->v2.channel_num, 1628 cfg->v2.band, bitmap, 1629 bitmap_n_entries); 1630 } 1631 } 1632 1633 static void 1634 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1635 struct ieee80211_channel **channels, 1636 struct iwl_scan_channel_params_v6 *cp, 1637 int n_channels, u32 flags, 1638 enum nl80211_iftype vif_type) 1639 { 1640 int i; 1641 1642 for (i = 0; i < n_channels; i++) { 1643 enum nl80211_band band = channels[i]->band; 1644 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1645 u32 n_aps_flag = 1646 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1647 cfg->v2.channel_num); 1648 1649 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1650 cfg->v2.channel_num = channels[i]->hw_value; 1651 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1652 if (cfg80211_channel_is_psc(channels[i])) 1653 cfg->flags = 0; 1654 cfg->v2.iter_count = 1; 1655 cfg->v2.iter_interval = 0; 1656 } 1657 } 1658 1659 static int 1660 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm_scan_params *params, 1661 __le32 *cmd_short_ssid, u8 *cmd_bssid, 1662 u8 *scan_ssid_num, u8 *bssid_num) 1663 { 1664 int j, idex_s = 0, idex_b = 0; 1665 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1666 params->scan_6ghz_params; 1667 1668 if (!params->n_6ghz_params) { 1669 for (j = 0; j < params->n_ssids; j++) { 1670 cmd_short_ssid[idex_s++] = 1671 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, 1672 params->ssids[j].ssid_len)); 1673 (*scan_ssid_num)++; 1674 } 1675 return 0; 1676 } 1677 1678 /* 1679 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz 1680 * collocated parameters. This might not be optimal, as this processing 1681 * does not (yet) correspond to the actual channels, so it is possible 1682 * that some entries would be left out. 1683 * 1684 * TODO: improve this logic. 1685 */ 1686 for (j = 0; j < params->n_6ghz_params; j++) { 1687 int k; 1688 1689 /* First, try to place the short SSID */ 1690 if (scan_6ghz_params[j].short_ssid_valid) { 1691 for (k = 0; k < idex_s; k++) { 1692 if (cmd_short_ssid[k] == 1693 cpu_to_le32(scan_6ghz_params[j].short_ssid)) 1694 break; 1695 } 1696 1697 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { 1698 cmd_short_ssid[idex_s++] = 1699 cpu_to_le32(scan_6ghz_params[j].short_ssid); 1700 (*scan_ssid_num)++; 1701 } 1702 } 1703 1704 /* try to place BSSID for the same entry */ 1705 for (k = 0; k < idex_b; k++) { 1706 if (!memcmp(&cmd_bssid[ETH_ALEN * k], 1707 scan_6ghz_params[j].bssid, ETH_ALEN)) 1708 break; 1709 } 1710 1711 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) { 1712 memcpy(&cmd_bssid[ETH_ALEN * idex_b++], 1713 scan_6ghz_params[j].bssid, ETH_ALEN); 1714 (*bssid_num)++; 1715 } 1716 } 1717 return 0; 1718 } 1719 1720 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */ 1721 static void 1722 iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm_scan_params *params, 1723 u32 n_channels, __le32 *cmd_short_ssid, 1724 u8 *cmd_bssid, u8 scan_ssid_num, 1725 u8 bssid_num, 1726 struct iwl_scan_channel_params_v6 *cp, 1727 enum nl80211_iftype vif_type) 1728 { 1729 struct iwl_scan_channel_cfg_umac *channel_cfg = cp->channel_config; 1730 int i; 1731 struct cfg80211_scan_6ghz_params *scan_6ghz_params = 1732 params->scan_6ghz_params; 1733 1734 for (i = 0; i < params->n_channels; i++) { 1735 struct iwl_scan_channel_cfg_umac *cfg = 1736 &cp->channel_config[i]; 1737 1738 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; 1739 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries; 1740 bool force_passive, found = false, 1741 unsolicited_probe_on_chan = false, psc_no_listen = false; 1742 1743 cfg->v1.channel_num = params->channels[i]->hw_value; 1744 cfg->v2.band = 2; 1745 cfg->v2.iter_count = 1; 1746 cfg->v2.iter_interval = 0; 1747 1748 /* 1749 * The optimize the scan time, i.e., reduce the scan dwell time 1750 * on each channel, the below logic tries to set 3 direct BSSID 1751 * probe requests for each broadcast probe request with a short 1752 * SSID. 1753 * TODO: improve this logic 1754 */ 1755 n_used_bssid_entries = 3; 1756 for (j = 0; j < params->n_6ghz_params; j++) { 1757 if (!(scan_6ghz_params[j].channel_idx == i)) 1758 continue; 1759 1760 found = false; 1761 unsolicited_probe_on_chan |= 1762 scan_6ghz_params[j].unsolicited_probe; 1763 psc_no_listen |= scan_6ghz_params[j].psc_no_listen; 1764 1765 for (k = 0; k < scan_ssid_num; k++) { 1766 if (!scan_6ghz_params[j].unsolicited_probe && 1767 le32_to_cpu(cmd_short_ssid[k]) == 1768 scan_6ghz_params[j].short_ssid) { 1769 /* Relevant short SSID bit set */ 1770 if (s_ssid_bitmap & BIT(k)) { 1771 found = true; 1772 break; 1773 } 1774 1775 /* 1776 * Use short SSID only to create a new 1777 * iteration during channel dwell. 1778 */ 1779 if (n_used_bssid_entries >= 3) { 1780 s_ssid_bitmap |= BIT(k); 1781 s_max++; 1782 n_used_bssid_entries -= 3; 1783 found = true; 1784 break; 1785 } 1786 } 1787 } 1788 1789 if (found) 1790 continue; 1791 1792 for (k = 0; k < bssid_num; k++) { 1793 if (!memcmp(&cmd_bssid[ETH_ALEN * k], 1794 scan_6ghz_params[j].bssid, 1795 ETH_ALEN)) { 1796 if (!(bssid_bitmap & BIT(k))) { 1797 bssid_bitmap |= BIT(k); 1798 b_max++; 1799 n_used_bssid_entries++; 1800 } 1801 break; 1802 } 1803 } 1804 } 1805 1806 flags = bssid_bitmap | (s_ssid_bitmap << 16); 1807 1808 if (cfg80211_channel_is_psc(params->channels[i]) && 1809 psc_no_listen) 1810 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; 1811 1812 if (unsolicited_probe_on_chan) 1813 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; 1814 1815 /* 1816 * In the following cases apply passive scan: 1817 * 1. Non fragmented scan: 1818 * - PSC channel with NO_LISTEN_FLAG on should be treated 1819 * like non PSC channel 1820 * - Non PSC channel with more than 3 short SSIDs or more 1821 * than 9 BSSIDs. 1822 * - Non PSC Channel with unsolicited probe response and 1823 * more than 2 short SSIDs or more than 6 BSSIDs. 1824 * - PSC channel with more than 2 short SSIDs or more than 1825 * 6 BSSIDs. 1826 * 3. Fragmented scan: 1827 * - PSC channel with more than 1 SSID or 3 BSSIDs. 1828 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. 1829 * - Non PSC channel with unsolicited probe response and 1830 * more than 1 SSID or more than 3 BSSIDs. 1831 */ 1832 if (!iwl_mvm_is_scan_fragmented(params->type)) { 1833 if (!cfg80211_channel_is_psc(params->channels[i]) || 1834 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) { 1835 force_passive = (s_max > 3 || b_max > 9); 1836 force_passive |= (unsolicited_probe_on_chan && 1837 (s_max > 2 || b_max > 6)); 1838 } else { 1839 force_passive = (s_max > 2 || b_max > 6); 1840 } 1841 } else if (cfg80211_channel_is_psc(params->channels[i])) { 1842 force_passive = (s_max > 1 || b_max > 3); 1843 } else { 1844 force_passive = (s_max > 2 || b_max > 6); 1845 force_passive |= (unsolicited_probe_on_chan && 1846 (s_max > 1 || b_max > 3)); 1847 } 1848 if (force_passive || 1849 (!flags && !cfg80211_channel_is_psc(params->channels[i]))) 1850 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; 1851 1852 channel_cfg[i].flags |= cpu_to_le32(flags); 1853 } 1854 } 1855 1856 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1857 struct iwl_mvm_scan_params *params, 1858 struct ieee80211_vif *vif) 1859 { 1860 u8 flags = 0; 1861 1862 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1863 1864 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1865 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1866 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1867 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1868 1869 /* set fragmented ebs for fragmented scan on HB channels */ 1870 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1871 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1872 1873 return flags; 1874 } 1875 1876 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 1877 struct iwl_mvm_scan_params *params, 1878 struct ieee80211_vif *vif, 1879 int type) 1880 { 1881 u16 flags = 0; 1882 1883 if (params->n_ssids == 0) 1884 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 1885 1886 if (iwl_mvm_is_scan_fragmented(params->type)) 1887 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 1888 1889 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1890 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 1891 1892 if (params->pass_all) 1893 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 1894 else 1895 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 1896 1897 if (!iwl_mvm_is_regular_scan(params)) 1898 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 1899 1900 if (params->iter_notif || 1901 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1902 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 1903 1904 if (IWL_MVM_ADWELL_ENABLE) 1905 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 1906 1907 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1908 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 1909 1910 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 1911 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) 1912 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; 1913 1914 return flags; 1915 } 1916 1917 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1918 struct iwl_mvm_scan_params *params, 1919 struct ieee80211_vif *vif) 1920 { 1921 u16 flags = 0; 1922 1923 if (params->n_ssids == 0) 1924 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1925 1926 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1927 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1928 1929 if (iwl_mvm_is_scan_fragmented(params->type)) 1930 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1931 1932 if (iwl_mvm_is_cdb_supported(mvm) && 1933 iwl_mvm_is_scan_fragmented(params->hb_type)) 1934 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1935 1936 if (iwl_mvm_rrm_scan_needed(mvm) && 1937 fw_has_capa(&mvm->fw->ucode_capa, 1938 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1939 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1940 1941 if (params->pass_all) 1942 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1943 else 1944 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1945 1946 if (!iwl_mvm_is_regular_scan(params)) 1947 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1948 1949 if (params->iter_notif) 1950 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1951 1952 #ifdef CONFIG_IWLWIFI_DEBUGFS 1953 if (mvm->scan_iter_notif_enabled) 1954 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1955 #endif 1956 1957 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1958 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1959 1960 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 1961 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1962 1963 /* 1964 * Extended dwell is relevant only for low band to start with, as it is 1965 * being used for social channles only (1, 6, 11), so we can check 1966 * only scan type on low band also for CDB. 1967 */ 1968 if (iwl_mvm_is_regular_scan(params) && 1969 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1970 !iwl_mvm_is_scan_fragmented(params->type) && 1971 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1972 !iwl_mvm_is_oce_supported(mvm)) 1973 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1974 1975 if (iwl_mvm_is_oce_supported(mvm)) { 1976 if ((params->flags & 1977 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1978 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1979 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1980 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1981 * the same bit, we need to make sure that we use this bit here 1982 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1983 * used. */ 1984 if ((params->flags & 1985 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1986 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1987 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1988 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1989 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1990 } 1991 1992 return flags; 1993 } 1994 1995 static int 1996 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 1997 struct iwl_scan_umac_schedule *schedule, 1998 __le16 *delay) 1999 { 2000 int i; 2001 if (WARN_ON(!params->n_scan_plans || 2002 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 2003 return -EINVAL; 2004 2005 for (i = 0; i < params->n_scan_plans; i++) { 2006 struct cfg80211_sched_scan_plan *scan_plan = 2007 ¶ms->scan_plans[i]; 2008 2009 schedule[i].iter_count = scan_plan->iterations; 2010 schedule[i].interval = 2011 cpu_to_le16(scan_plan->interval); 2012 } 2013 2014 /* 2015 * If the number of iterations of the last scan plan is set to 2016 * zero, it should run infinitely. However, this is not always the case. 2017 * For example, when regular scan is requested the driver sets one scan 2018 * plan with one iteration. 2019 */ 2020 if (!schedule[params->n_scan_plans - 1].iter_count) 2021 schedule[params->n_scan_plans - 1].iter_count = 0xff; 2022 2023 *delay = cpu_to_le16(params->delay); 2024 2025 return 0; 2026 } 2027 2028 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2029 struct iwl_mvm_scan_params *params, 2030 int type, int uid) 2031 { 2032 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 2033 struct iwl_scan_umac_chan_param *chan_param; 2034 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 2035 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 2036 mvm->fw->ucode_capa.n_scan_channels; 2037 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 2038 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 2039 struct iwl_scan_req_umac_tail_v1 *tail_v1; 2040 struct iwl_ssid_ie *direct_scan; 2041 int ret = 0; 2042 u32 ssid_bitmap = 0; 2043 u8 channel_flags = 0; 2044 u16 gen_flags; 2045 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2046 2047 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 2048 2049 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 2050 2051 mvm->scan_uid_status[uid] = type; 2052 2053 cmd->uid = cpu_to_le32(uid); 2054 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 2055 cmd->general_flags = cpu_to_le16(gen_flags); 2056 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 2057 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 2058 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 2059 IWL_SCAN_NUM_OF_FRAGS; 2060 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 2061 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 2062 IWL_SCAN_NUM_OF_FRAGS; 2063 2064 cmd->v8.general_flags2 = 2065 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 2066 } 2067 2068 cmd->scan_start_mac_id = scan_vif->id; 2069 2070 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 2071 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 2072 2073 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 2074 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 2075 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 2076 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 2077 2078 /* set fragmented ebs for fragmented scan on HB channels */ 2079 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 2080 if (gen_flags & 2081 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 2082 (!iwl_mvm_is_cdb_supported(mvm) && 2083 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 2084 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 2085 } 2086 } 2087 2088 chan_param->flags = channel_flags; 2089 chan_param->count = params->n_channels; 2090 2091 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 2092 &tail_v2->delay); 2093 if (ret) { 2094 mvm->scan_uid_status[uid] = 0; 2095 return ret; 2096 } 2097 2098 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 2099 tail_v2->preq = params->preq; 2100 direct_scan = tail_v2->direct_scan; 2101 } else { 2102 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 2103 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 2104 ¶ms->preq); 2105 direct_scan = tail_v1->direct_scan; 2106 } 2107 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 2108 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 2109 params->n_channels, ssid_bitmap, 2110 cmd_data); 2111 return 0; 2112 } 2113 2114 static void 2115 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, 2116 struct iwl_mvm_scan_params *params, 2117 struct ieee80211_vif *vif, 2118 struct iwl_scan_general_params_v10 *gp, 2119 u16 gen_flags) 2120 { 2121 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 2122 2123 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); 2124 2125 gp->flags = cpu_to_le16(gen_flags); 2126 2127 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 2128 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2129 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 2130 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 2131 2132 gp->scan_start_mac_id = scan_vif->id; 2133 } 2134 2135 static void 2136 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 2137 struct iwl_scan_probe_params_v3 *pp) 2138 { 2139 pp->preq = params->preq; 2140 pp->ssid_num = params->n_ssids; 2141 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 2142 } 2143 2144 static void 2145 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 2146 struct iwl_scan_probe_params_v4 *pp, 2147 u32 *bitmap_ssid) 2148 { 2149 pp->preq = params->preq; 2150 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 2151 } 2152 2153 static void 2154 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 2155 struct iwl_mvm_scan_params *params, 2156 struct ieee80211_vif *vif, 2157 struct iwl_scan_channel_params_v4 *cp, 2158 u32 channel_cfg_flags) 2159 { 2160 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2161 cp->count = params->n_channels; 2162 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2163 2164 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 2165 params->n_channels, 2166 channel_cfg_flags, 2167 vif->type); 2168 } 2169 2170 static void 2171 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2172 struct iwl_mvm_scan_params *params, 2173 struct ieee80211_vif *vif, 2174 struct iwl_scan_channel_params_v6 *cp, 2175 u32 channel_cfg_flags) 2176 { 2177 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2178 cp->count = params->n_channels; 2179 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2180 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2181 2182 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2183 params->n_channels, 2184 channel_cfg_flags, 2185 vif->type); 2186 } 2187 2188 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2189 struct iwl_mvm_scan_params *params, int type, 2190 int uid) 2191 { 2192 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2193 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2194 int ret; 2195 u16 gen_flags; 2196 2197 mvm->scan_uid_status[uid] = type; 2198 2199 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2200 cmd->uid = cpu_to_le32(uid); 2201 2202 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2203 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2204 &scan_p->general_params, 2205 gen_flags); 2206 2207 ret = iwl_mvm_fill_scan_sched_params(params, 2208 scan_p->periodic_params.schedule, 2209 &scan_p->periodic_params.delay); 2210 if (ret) 2211 return ret; 2212 2213 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2214 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2215 &scan_p->channel_params, 0); 2216 2217 return 0; 2218 } 2219 2220 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2221 struct iwl_mvm_scan_params *params, int type, 2222 int uid) 2223 { 2224 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd; 2225 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params; 2226 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params; 2227 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; 2228 int ret; 2229 u16 gen_flags; 2230 u32 bitmap_ssid = 0; 2231 2232 mvm->scan_uid_status[uid] = type; 2233 2234 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2235 cmd->uid = cpu_to_le32(uid); 2236 2237 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2238 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2239 &scan_p->general_params, 2240 gen_flags); 2241 2242 ret = iwl_mvm_fill_scan_sched_params(params, 2243 scan_p->periodic_params.schedule, 2244 &scan_p->periodic_params.delay); 2245 if (ret) 2246 return ret; 2247 2248 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2249 &bitmap_ssid); 2250 if (!params->scan_6ghz) { 2251 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2252 &scan_p->channel_params, bitmap_ssid); 2253 2254 return 0; 2255 } 2256 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2257 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2258 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2259 2260 ret = iwl_mvm_umac_scan_fill_6g_chan_list(params, pb->short_ssid, 2261 pb->bssid_array[0], 2262 &pb->short_ssid_num, 2263 &pb->bssid_num); 2264 if (ret) 2265 return ret; 2266 2267 iwl_mvm_umac_scan_cfg_channels_v6_6g(params, 2268 params->n_channels, 2269 pb->short_ssid, 2270 pb->bssid_array[0], 2271 pb->short_ssid_num, 2272 pb->bssid_num, cp, 2273 vif->type); 2274 cp->count = params->n_channels; 2275 if (!params->n_ssids || 2276 (params->n_ssids == 1 && !params->ssids[0].ssid_len)) 2277 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; 2278 2279 return 0; 2280 } 2281 2282 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2283 { 2284 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2285 } 2286 2287 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2288 { 2289 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2290 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2291 2292 /* This looks a bit arbitrary, but the idea is that if we run 2293 * out of possible simultaneous scans and the userspace is 2294 * trying to run a scan type that is already running, we 2295 * return -EBUSY. But if the userspace wants to start a 2296 * different type of scan, we stop the opposite type to make 2297 * space for the new request. The reason is backwards 2298 * compatibility with old wpa_supplicant that wouldn't stop a 2299 * scheduled scan before starting a normal scan. 2300 */ 2301 2302 /* FW supports only a single periodic scan */ 2303 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2304 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2305 return -EBUSY; 2306 2307 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2308 return 0; 2309 2310 /* Use a switch, even though this is a bitmask, so that more 2311 * than one bits set will fall in default and we will warn. 2312 */ 2313 switch (type) { 2314 case IWL_MVM_SCAN_REGULAR: 2315 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2316 return -EBUSY; 2317 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2318 case IWL_MVM_SCAN_SCHED: 2319 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2320 return -EBUSY; 2321 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2322 case IWL_MVM_SCAN_NETDETECT: 2323 /* For non-unified images, there's no need to stop 2324 * anything for net-detect since the firmware is 2325 * restarted anyway. This way, any sched scans that 2326 * were running will be restarted when we resume. 2327 */ 2328 if (!unified_image) 2329 return 0; 2330 2331 /* If this is a unified image and we ran out of scans, 2332 * we need to stop something. Prefer stopping regular 2333 * scans, because the results are useless at this 2334 * point, and we should be able to keep running 2335 * another scheduled scan while suspended. 2336 */ 2337 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2338 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2339 true); 2340 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2341 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2342 true); 2343 /* Something is wrong if no scan was running but we 2344 * ran out of scans. 2345 */ 2346 fallthrough; 2347 default: 2348 WARN_ON(1); 2349 break; 2350 } 2351 2352 return -EIO; 2353 } 2354 2355 #define SCAN_TIMEOUT 20000 2356 2357 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2358 { 2359 struct delayed_work *delayed_work = to_delayed_work(work); 2360 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2361 scan_timeout_dwork); 2362 2363 IWL_ERR(mvm, "regular scan timed out\n"); 2364 2365 iwl_force_nmi(mvm->trans); 2366 } 2367 2368 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2369 struct iwl_mvm_scan_params *params, 2370 struct ieee80211_vif *vif) 2371 { 2372 if (iwl_mvm_is_cdb_supported(mvm)) { 2373 params->type = 2374 iwl_mvm_get_scan_type_band(mvm, vif, 2375 NL80211_BAND_2GHZ); 2376 params->hb_type = 2377 iwl_mvm_get_scan_type_band(mvm, vif, 2378 NL80211_BAND_5GHZ); 2379 } else { 2380 params->type = iwl_mvm_get_scan_type(mvm, vif); 2381 } 2382 } 2383 2384 struct iwl_scan_umac_handler { 2385 u8 version; 2386 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2387 struct iwl_mvm_scan_params *params, int type, int uid); 2388 }; 2389 2390 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2391 .version = _ver, \ 2392 .handler = iwl_mvm_scan_umac_v##_ver, \ 2393 } 2394 2395 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2396 /* set the newest version first to shorten the list traverse time */ 2397 IWL_SCAN_UMAC_HANDLER(14), 2398 IWL_SCAN_UMAC_HANDLER(12), 2399 }; 2400 2401 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2402 struct ieee80211_vif *vif, 2403 struct iwl_host_cmd *hcmd, 2404 struct iwl_mvm_scan_params *params, 2405 int type) 2406 { 2407 int uid, i, err; 2408 u8 scan_ver; 2409 2410 lockdep_assert_held(&mvm->mutex); 2411 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2412 2413 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2414 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2415 2416 return iwl_mvm_scan_lmac(mvm, vif, params); 2417 } 2418 2419 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2420 if (uid < 0) 2421 return uid; 2422 2423 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2424 2425 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2426 SCAN_REQ_UMAC, 2427 IWL_FW_CMD_VER_UNKNOWN); 2428 2429 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2430 const struct iwl_scan_umac_handler *ver_handler = 2431 &iwl_scan_umac_handlers[i]; 2432 2433 if (ver_handler->version != scan_ver) 2434 continue; 2435 2436 return ver_handler->handler(mvm, vif, params, type, uid); 2437 } 2438 2439 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2440 if (err) 2441 return err; 2442 2443 return uid; 2444 } 2445 2446 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2447 struct cfg80211_scan_request *req, 2448 struct ieee80211_scan_ies *ies) 2449 { 2450 struct iwl_host_cmd hcmd = { 2451 .len = { iwl_mvm_scan_size(mvm), }, 2452 .data = { mvm->scan_cmd, }, 2453 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2454 }; 2455 struct iwl_mvm_scan_params params = {}; 2456 int ret, uid; 2457 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2458 2459 lockdep_assert_held(&mvm->mutex); 2460 2461 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2462 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2463 return -EBUSY; 2464 } 2465 2466 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2467 if (ret) 2468 return ret; 2469 2470 /* we should have failed registration if scan_cmd was NULL */ 2471 if (WARN_ON(!mvm->scan_cmd)) 2472 return -ENOMEM; 2473 2474 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2475 return -ENOBUFS; 2476 2477 params.n_ssids = req->n_ssids; 2478 params.flags = req->flags; 2479 params.n_channels = req->n_channels; 2480 params.delay = 0; 2481 params.ssids = req->ssids; 2482 params.channels = req->channels; 2483 params.mac_addr = req->mac_addr; 2484 params.mac_addr_mask = req->mac_addr_mask; 2485 params.no_cck = req->no_cck; 2486 params.pass_all = true; 2487 params.n_match_sets = 0; 2488 params.match_sets = NULL; 2489 2490 params.scan_plans = &scan_plan; 2491 params.n_scan_plans = 1; 2492 2493 params.n_6ghz_params = req->n_6ghz_params; 2494 params.scan_6ghz_params = req->scan_6ghz_params; 2495 params.scan_6ghz = req->scan_6ghz; 2496 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2497 2498 if (req->duration) 2499 params.iter_notif = true; 2500 2501 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2502 2503 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2504 IWL_MVM_SCAN_REGULAR); 2505 2506 if (uid < 0) 2507 return uid; 2508 2509 iwl_mvm_pause_tcm(mvm, false); 2510 2511 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2512 if (ret) { 2513 /* If the scan failed, it usually means that the FW was unable 2514 * to allocate the time events. Warn on it, but maybe we 2515 * should try to send the command again with different params. 2516 */ 2517 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2518 iwl_mvm_resume_tcm(mvm); 2519 mvm->scan_uid_status[uid] = 0; 2520 return ret; 2521 } 2522 2523 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2524 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2525 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2526 2527 schedule_delayed_work(&mvm->scan_timeout_dwork, 2528 msecs_to_jiffies(SCAN_TIMEOUT)); 2529 2530 return 0; 2531 } 2532 2533 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2534 struct ieee80211_vif *vif, 2535 struct cfg80211_sched_scan_request *req, 2536 struct ieee80211_scan_ies *ies, 2537 int type) 2538 { 2539 struct iwl_host_cmd hcmd = { 2540 .len = { iwl_mvm_scan_size(mvm), }, 2541 .data = { mvm->scan_cmd, }, 2542 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2543 }; 2544 struct iwl_mvm_scan_params params = {}; 2545 int ret, uid; 2546 int i, j; 2547 bool non_psc_included = false; 2548 2549 lockdep_assert_held(&mvm->mutex); 2550 2551 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2552 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2553 return -EBUSY; 2554 } 2555 2556 ret = iwl_mvm_check_running_scans(mvm, type); 2557 if (ret) 2558 return ret; 2559 2560 /* we should have failed registration if scan_cmd was NULL */ 2561 if (WARN_ON(!mvm->scan_cmd)) 2562 return -ENOMEM; 2563 2564 2565 params.n_ssids = req->n_ssids; 2566 params.flags = req->flags; 2567 params.n_channels = req->n_channels; 2568 params.ssids = req->ssids; 2569 params.channels = req->channels; 2570 params.mac_addr = req->mac_addr; 2571 params.mac_addr_mask = req->mac_addr_mask; 2572 params.no_cck = false; 2573 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2574 params.n_match_sets = req->n_match_sets; 2575 params.match_sets = req->match_sets; 2576 if (!req->n_scan_plans) 2577 return -EINVAL; 2578 2579 params.n_scan_plans = req->n_scan_plans; 2580 params.scan_plans = req->scan_plans; 2581 2582 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2583 2584 /* In theory, LMAC scans can handle a 32-bit delay, but since 2585 * waiting for over 18 hours to start the scan is a bit silly 2586 * and to keep it aligned with UMAC scans (which only support 2587 * 16-bit delays), trim it down to 16-bits. 2588 */ 2589 if (req->delay > U16_MAX) { 2590 IWL_DEBUG_SCAN(mvm, 2591 "delay value is > 16-bits, set to max possible\n"); 2592 params.delay = U16_MAX; 2593 } else { 2594 params.delay = req->delay; 2595 } 2596 2597 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2598 if (ret) 2599 return ret; 2600 2601 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2602 2603 /* for 6 GHZ band only PSC channels need to be added */ 2604 for (i = 0; i < params.n_channels; i++) { 2605 struct ieee80211_channel *channel = params.channels[i]; 2606 2607 if (channel->band == NL80211_BAND_6GHZ && 2608 !cfg80211_channel_is_psc(channel)) { 2609 non_psc_included = true; 2610 break; 2611 } 2612 } 2613 2614 if (non_psc_included) { 2615 params.channels = kmemdup(params.channels, 2616 sizeof(params.channels[0]) * 2617 params.n_channels, 2618 GFP_KERNEL); 2619 if (!params.channels) 2620 return -ENOMEM; 2621 2622 for (i = j = 0; i < params.n_channels; i++) { 2623 if (params.channels[i]->band == NL80211_BAND_6GHZ && 2624 !cfg80211_channel_is_psc(params.channels[i])) 2625 continue; 2626 params.channels[j++] = params.channels[i]; 2627 } 2628 params.n_channels = j; 2629 } 2630 2631 if (non_psc_included && 2632 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { 2633 kfree(params.channels); 2634 return -ENOBUFS; 2635 } 2636 2637 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2638 2639 if (non_psc_included) 2640 kfree(params.channels); 2641 if (uid < 0) 2642 return uid; 2643 2644 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2645 if (!ret) { 2646 IWL_DEBUG_SCAN(mvm, 2647 "Sched scan request was sent successfully\n"); 2648 mvm->scan_status |= type; 2649 } else { 2650 /* If the scan failed, it usually means that the FW was unable 2651 * to allocate the time events. Warn on it, but maybe we 2652 * should try to send the command again with different params. 2653 */ 2654 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2655 mvm->scan_uid_status[uid] = 0; 2656 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2657 } 2658 2659 return ret; 2660 } 2661 2662 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2663 struct iwl_rx_cmd_buffer *rxb) 2664 { 2665 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2666 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2667 u32 uid = __le32_to_cpu(notif->uid); 2668 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2669 2670 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2671 return; 2672 2673 /* if the scan is already stopping, we don't need to notify mac80211 */ 2674 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2675 struct cfg80211_scan_info info = { 2676 .aborted = aborted, 2677 .scan_start_tsf = mvm->scan_start, 2678 }; 2679 2680 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2681 ieee80211_scan_completed(mvm->hw, &info); 2682 mvm->scan_vif = NULL; 2683 cancel_delayed_work(&mvm->scan_timeout_dwork); 2684 iwl_mvm_resume_tcm(mvm); 2685 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2686 ieee80211_sched_scan_stopped(mvm->hw); 2687 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2688 } 2689 2690 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2691 IWL_DEBUG_SCAN(mvm, 2692 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2693 uid, mvm->scan_uid_status[uid], 2694 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2695 "completed" : "aborted", 2696 iwl_mvm_ebs_status_str(notif->ebs_status)); 2697 IWL_DEBUG_SCAN(mvm, 2698 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2699 notif->last_schedule, notif->last_iter, 2700 __le32_to_cpu(notif->time_from_last_iter)); 2701 2702 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2703 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2704 mvm->last_ebs_successful = false; 2705 2706 mvm->scan_uid_status[uid] = 0; 2707 } 2708 2709 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2710 struct iwl_rx_cmd_buffer *rxb) 2711 { 2712 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2713 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2714 2715 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2716 2717 IWL_DEBUG_SCAN(mvm, 2718 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2719 notif->status, notif->scanned_channels); 2720 2721 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2722 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2723 ieee80211_sched_scan_results(mvm->hw); 2724 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2725 } 2726 2727 IWL_DEBUG_SCAN(mvm, 2728 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2729 mvm->scan_start); 2730 } 2731 2732 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2733 { 2734 struct iwl_umac_scan_abort cmd = {}; 2735 int uid, ret; 2736 2737 lockdep_assert_held(&mvm->mutex); 2738 2739 /* We should always get a valid index here, because we already 2740 * checked that this type of scan was running in the generic 2741 * code. 2742 */ 2743 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2744 if (WARN_ON_ONCE(uid < 0)) 2745 return uid; 2746 2747 cmd.uid = cpu_to_le32(uid); 2748 2749 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2750 2751 ret = iwl_mvm_send_cmd_pdu(mvm, 2752 iwl_cmd_id(SCAN_ABORT_UMAC, 2753 IWL_ALWAYS_LONG_GROUP, 0), 2754 0, sizeof(cmd), &cmd); 2755 if (!ret) 2756 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2757 2758 return ret; 2759 } 2760 2761 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2762 { 2763 struct iwl_notification_wait wait_scan_done; 2764 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2765 SCAN_OFFLOAD_COMPLETE, }; 2766 int ret; 2767 2768 lockdep_assert_held(&mvm->mutex); 2769 2770 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2771 scan_done_notif, 2772 ARRAY_SIZE(scan_done_notif), 2773 NULL, NULL); 2774 2775 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2776 2777 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2778 ret = iwl_mvm_umac_scan_abort(mvm, type); 2779 else 2780 ret = iwl_mvm_lmac_scan_abort(mvm); 2781 2782 if (ret) { 2783 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2784 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2785 return ret; 2786 } 2787 2788 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2789 1 * HZ); 2790 } 2791 2792 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ 2793 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ 2794 } 2795 2796 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2797 { 2798 switch (scan_ver) { 2799 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14); 2800 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); 2801 } 2802 2803 return 0; 2804 } 2805 2806 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2807 { 2808 int base_size, tail_size; 2809 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2810 SCAN_REQ_UMAC, 2811 IWL_FW_CMD_VER_UNKNOWN); 2812 2813 base_size = iwl_scan_req_umac_get_size(scan_ver); 2814 if (base_size) 2815 return base_size; 2816 2817 2818 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2819 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2820 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2821 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2822 else if (iwl_mvm_cdb_scan_api(mvm)) 2823 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2824 else 2825 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2826 2827 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2828 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2829 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2830 else 2831 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2832 2833 return base_size + 2834 sizeof(struct iwl_scan_channel_cfg_umac) * 2835 mvm->fw->ucode_capa.n_scan_channels + 2836 tail_size; 2837 } 2838 return sizeof(struct iwl_scan_req_lmac) + 2839 sizeof(struct iwl_scan_channel_cfg_lmac) * 2840 mvm->fw->ucode_capa.n_scan_channels + 2841 sizeof(struct iwl_scan_probe_req_v1); 2842 } 2843 2844 /* 2845 * This function is used in nic restart flow, to inform mac80211 about scans 2846 * that was aborted by restart flow or by an assert. 2847 */ 2848 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2849 { 2850 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2851 int uid, i; 2852 2853 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2854 if (uid >= 0) { 2855 struct cfg80211_scan_info info = { 2856 .aborted = true, 2857 }; 2858 2859 cancel_delayed_work(&mvm->scan_timeout_dwork); 2860 2861 ieee80211_scan_completed(mvm->hw, &info); 2862 mvm->scan_uid_status[uid] = 0; 2863 } 2864 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2865 if (uid >= 0) { 2866 /* Sched scan will be restarted by mac80211 in 2867 * restart_hw, so do not report if FW is about to be 2868 * restarted. 2869 */ 2870 if (!mvm->fw_restart) 2871 ieee80211_sched_scan_stopped(mvm->hw); 2872 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2873 mvm->scan_uid_status[uid] = 0; 2874 } 2875 uid = iwl_mvm_scan_uid_by_status(mvm, 2876 IWL_MVM_SCAN_STOPPING_REGULAR); 2877 if (uid >= 0) 2878 mvm->scan_uid_status[uid] = 0; 2879 2880 uid = iwl_mvm_scan_uid_by_status(mvm, 2881 IWL_MVM_SCAN_STOPPING_SCHED); 2882 if (uid >= 0) 2883 mvm->scan_uid_status[uid] = 0; 2884 2885 /* We shouldn't have any UIDs still set. Loop over all the 2886 * UIDs to make sure there's nothing left there and warn if 2887 * any is found. 2888 */ 2889 for (i = 0; i < mvm->max_scans; i++) { 2890 if (WARN_ONCE(mvm->scan_uid_status[i], 2891 "UMAC scan UID %d status was not cleaned\n", 2892 i)) 2893 mvm->scan_uid_status[i] = 0; 2894 } 2895 } else { 2896 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2897 struct cfg80211_scan_info info = { 2898 .aborted = true, 2899 }; 2900 2901 cancel_delayed_work(&mvm->scan_timeout_dwork); 2902 ieee80211_scan_completed(mvm->hw, &info); 2903 } 2904 2905 /* Sched scan will be restarted by mac80211 in 2906 * restart_hw, so do not report if FW is about to be 2907 * restarted. 2908 */ 2909 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2910 !mvm->fw_restart) { 2911 ieee80211_sched_scan_stopped(mvm->hw); 2912 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2913 } 2914 } 2915 } 2916 2917 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2918 { 2919 int ret; 2920 2921 if (!(mvm->scan_status & type)) 2922 return 0; 2923 2924 if (iwl_mvm_is_radio_killed(mvm)) { 2925 ret = 0; 2926 goto out; 2927 } 2928 2929 ret = iwl_mvm_scan_stop_wait(mvm, type); 2930 if (!ret) 2931 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2932 out: 2933 /* Clear the scan status so the next scan requests will 2934 * succeed and mark the scan as stopping, so that the Rx 2935 * handler doesn't do anything, as the scan was stopped from 2936 * above. 2937 */ 2938 mvm->scan_status &= ~type; 2939 2940 if (type == IWL_MVM_SCAN_REGULAR) { 2941 cancel_delayed_work(&mvm->scan_timeout_dwork); 2942 if (notify) { 2943 struct cfg80211_scan_info info = { 2944 .aborted = true, 2945 }; 2946 2947 ieee80211_scan_completed(mvm->hw, &info); 2948 } 2949 } else if (notify) { 2950 ieee80211_sched_scan_stopped(mvm->hw); 2951 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2952 } 2953 2954 return ret; 2955 } 2956