1 /****************************************************************************** 2 * 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * GPL LICENSE SUMMARY 7 * 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 11 * Copyright(c) 2018 - 2019 Intel Corporation 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of version 2 of the GNU General Public License as 15 * published by the Free Software Foundation. 16 * 17 * This program is distributed in the hope that it will be useful, but 18 * WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 20 * General Public License for more details. 21 * 22 * The full GNU General Public License is included in this distribution 23 * in the file called COPYING. 24 * 25 * Contact Information: 26 * Intel Linux Wireless <linuxwifi@intel.com> 27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 28 * 29 * BSD LICENSE 30 * 31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 34 * Copyright(c) 2018 - 2019 Intel Corporation 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * * Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * * Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in 45 * the documentation and/or other materials provided with the 46 * distribution. 47 * * Neither the name Intel Corporation nor the names of its 48 * contributors may be used to endorse or promote products derived 49 * from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 *****************************************************************************/ 64 65 #include <linux/etherdevice.h> 66 #include <net/mac80211.h> 67 68 #include "mvm.h" 69 #include "fw/api/scan.h" 70 #include "iwl-io.h" 71 72 #define IWL_DENSE_EBS_SCAN_RATIO 5 73 #define IWL_SPARSE_EBS_SCAN_RATIO 1 74 75 #define IWL_SCAN_DWELL_ACTIVE 10 76 #define IWL_SCAN_DWELL_PASSIVE 110 77 #define IWL_SCAN_DWELL_FRAGMENTED 44 78 #define IWL_SCAN_DWELL_EXTENDED 90 79 #define IWL_SCAN_NUM_OF_FRAGS 3 80 #define IWL_SCAN_LAST_2_4_CHN 14 81 82 /* adaptive dwell max budget time [TU] for full scan */ 83 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 84 /* adaptive dwell max budget time [TU] for directed scan */ 85 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 86 /* adaptive dwell default high band APs number */ 87 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 88 /* adaptive dwell default low band APs number */ 89 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 90 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 91 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 92 93 struct iwl_mvm_scan_timing_params { 94 u32 suspend_time; 95 u32 max_out_time; 96 }; 97 98 static struct iwl_mvm_scan_timing_params scan_timing[] = { 99 [IWL_SCAN_TYPE_UNASSOC] = { 100 .suspend_time = 0, 101 .max_out_time = 0, 102 }, 103 [IWL_SCAN_TYPE_WILD] = { 104 .suspend_time = 30, 105 .max_out_time = 120, 106 }, 107 [IWL_SCAN_TYPE_MILD] = { 108 .suspend_time = 120, 109 .max_out_time = 120, 110 }, 111 [IWL_SCAN_TYPE_FRAGMENTED] = { 112 .suspend_time = 95, 113 .max_out_time = 44, 114 }, 115 [IWL_SCAN_TYPE_FAST_BALANCE] = { 116 .suspend_time = 30, 117 .max_out_time = 37, 118 }, 119 }; 120 121 struct iwl_mvm_scan_params { 122 /* For CDB this is low band scan type, for non-CDB - type. */ 123 enum iwl_mvm_scan_type type; 124 enum iwl_mvm_scan_type hb_type; 125 u32 n_channels; 126 u16 delay; 127 int n_ssids; 128 struct cfg80211_ssid *ssids; 129 struct ieee80211_channel **channels; 130 u32 flags; 131 u8 *mac_addr; 132 u8 *mac_addr_mask; 133 bool no_cck; 134 bool pass_all; 135 int n_match_sets; 136 struct iwl_scan_probe_req preq; 137 struct cfg80211_match_set *match_sets; 138 int n_scan_plans; 139 struct cfg80211_sched_scan_plan *scan_plans; 140 u32 measurement_dwell; 141 }; 142 143 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 144 { 145 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 146 147 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 148 return (void *)&cmd->v8.data; 149 150 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 151 return (void *)&cmd->v7.data; 152 153 if (iwl_mvm_cdb_scan_api(mvm)) 154 return (void *)&cmd->v6.data; 155 156 return (void *)&cmd->v1.data; 157 } 158 159 static inline struct iwl_scan_umac_chan_param * 160 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 161 { 162 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 163 164 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 165 return &cmd->v8.channel; 166 167 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 168 return &cmd->v7.channel; 169 170 if (iwl_mvm_cdb_scan_api(mvm)) 171 return &cmd->v6.channel; 172 173 return &cmd->v1.channel; 174 } 175 176 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 177 { 178 if (mvm->scan_rx_ant != ANT_NONE) 179 return mvm->scan_rx_ant; 180 return iwl_mvm_get_valid_rx_ant(mvm); 181 } 182 183 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 184 { 185 u16 rx_chain; 186 u8 rx_ant; 187 188 rx_ant = iwl_mvm_scan_rx_ant(mvm); 189 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 190 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 191 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 192 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 193 return cpu_to_le16(rx_chain); 194 } 195 196 static inline __le32 197 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 198 bool no_cck) 199 { 200 u32 tx_ant; 201 202 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 203 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 204 205 if (band == NL80211_BAND_2GHZ && !no_cck) 206 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | 207 tx_ant); 208 else 209 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 210 } 211 212 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, 213 struct ieee80211_vif *vif) 214 { 215 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 216 int *global_cnt = data; 217 218 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 219 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 220 *global_cnt += 1; 221 } 222 223 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 224 { 225 return mvm->tcm.result.global_load; 226 } 227 228 static enum iwl_mvm_traffic_load 229 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 230 { 231 return mvm->tcm.result.band_load[band]; 232 } 233 234 struct iwl_is_dcm_with_go_iterator_data { 235 struct ieee80211_vif *current_vif; 236 bool is_dcm_with_p2p_go; 237 }; 238 239 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, 240 struct ieee80211_vif *vif) 241 { 242 struct iwl_is_dcm_with_go_iterator_data *data = _data; 243 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 244 struct iwl_mvm_vif *curr_mvmvif = 245 iwl_mvm_vif_from_mac80211(data->current_vif); 246 247 /* exclude the given vif */ 248 if (vif == data->current_vif) 249 return; 250 251 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 252 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 253 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 254 data->is_dcm_with_p2p_go = true; 255 } 256 257 static enum 258 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 259 struct ieee80211_vif *vif, 260 enum iwl_mvm_traffic_load load, 261 bool low_latency) 262 { 263 int global_cnt = 0; 264 265 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 266 IEEE80211_IFACE_ITER_NORMAL, 267 iwl_mvm_scan_condition_iterator, 268 &global_cnt); 269 if (!global_cnt) 270 return IWL_SCAN_TYPE_UNASSOC; 271 272 if (fw_has_api(&mvm->fw->ucode_capa, 273 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 274 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 275 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 276 return IWL_SCAN_TYPE_FRAGMENTED; 277 278 /* in case of DCM with GO where BSS DTIM interval < 220msec 279 * set all scan requests as fast-balance scan 280 * */ 281 if (vif && vif->type == NL80211_IFTYPE_STATION && 282 vif->bss_conf.dtim_period < 220) { 283 struct iwl_is_dcm_with_go_iterator_data data = { 284 .current_vif = vif, 285 .is_dcm_with_p2p_go = false, 286 }; 287 288 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 289 IEEE80211_IFACE_ITER_NORMAL, 290 iwl_mvm_is_dcm_with_go_iterator, 291 &data); 292 if (data.is_dcm_with_p2p_go) 293 return IWL_SCAN_TYPE_FAST_BALANCE; 294 } 295 } 296 297 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 298 return IWL_SCAN_TYPE_MILD; 299 300 return IWL_SCAN_TYPE_WILD; 301 } 302 303 static enum 304 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 305 struct ieee80211_vif *vif) 306 { 307 enum iwl_mvm_traffic_load load; 308 bool low_latency; 309 310 load = iwl_mvm_get_traffic_load(mvm); 311 low_latency = iwl_mvm_low_latency(mvm); 312 313 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 314 } 315 316 static enum 317 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 318 struct ieee80211_vif *vif, 319 enum nl80211_band band) 320 { 321 enum iwl_mvm_traffic_load load; 322 bool low_latency; 323 324 load = iwl_mvm_get_traffic_load_band(mvm, band); 325 low_latency = iwl_mvm_low_latency_band(mvm, band); 326 327 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 328 } 329 330 static int 331 iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm, 332 struct cfg80211_scan_request *req, 333 struct iwl_mvm_scan_params *params) 334 { 335 u32 duration = scan_timing[params->type].max_out_time; 336 337 if (!req->duration) 338 return 0; 339 340 if (iwl_mvm_is_cdb_supported(mvm)) { 341 u32 hb_time = scan_timing[params->hb_type].max_out_time; 342 343 duration = min_t(u32, duration, hb_time); 344 } 345 346 if (req->duration_mandatory && req->duration > duration) { 347 IWL_DEBUG_SCAN(mvm, 348 "Measurement scan - too long dwell %hu (max out time %u)\n", 349 req->duration, 350 duration); 351 return -EOPNOTSUPP; 352 } 353 354 return min_t(u32, (u32)req->duration, duration); 355 } 356 357 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 358 { 359 /* require rrm scan whenever the fw supports it */ 360 return fw_has_capa(&mvm->fw->ucode_capa, 361 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 362 } 363 364 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 365 { 366 int max_probe_len; 367 368 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 369 370 /* we create the 802.11 header and SSID element */ 371 max_probe_len -= 24 + 2; 372 373 /* DS parameter set element is added on 2.4GHZ band if required */ 374 if (iwl_mvm_rrm_scan_needed(mvm)) 375 max_probe_len -= 3; 376 377 return max_probe_len; 378 } 379 380 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 381 { 382 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 383 384 /* TODO: [BUG] This function should return the maximum allowed size of 385 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 386 * in the same command. So the correct implementation of this function 387 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 388 * command has only 512 bytes and it would leave us with about 240 389 * bytes for scan IEs, which is clearly not enough. So meanwhile 390 * we will report an incorrect value. This may result in a failure to 391 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 392 * functions with -ENOBUFS, if a large enough probe will be provided. 393 */ 394 return max_ie_len; 395 } 396 397 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 398 struct iwl_rx_cmd_buffer *rxb) 399 { 400 struct iwl_rx_packet *pkt = rxb_addr(rxb); 401 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 402 403 IWL_DEBUG_SCAN(mvm, 404 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 405 notif->status, notif->scanned_channels); 406 407 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 408 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 409 ieee80211_sched_scan_results(mvm->hw); 410 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 411 } 412 } 413 414 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 415 struct iwl_rx_cmd_buffer *rxb) 416 { 417 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 418 ieee80211_sched_scan_results(mvm->hw); 419 } 420 421 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 422 { 423 switch (status) { 424 case IWL_SCAN_EBS_SUCCESS: 425 return "successful"; 426 case IWL_SCAN_EBS_INACTIVE: 427 return "inactive"; 428 case IWL_SCAN_EBS_FAILED: 429 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 430 default: 431 return "failed"; 432 } 433 } 434 435 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 436 struct iwl_rx_cmd_buffer *rxb) 437 { 438 struct iwl_rx_packet *pkt = rxb_addr(rxb); 439 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 440 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 441 442 /* If this happens, the firmware has mistakenly sent an LMAC 443 * notification during UMAC scans -- warn and ignore it. 444 */ 445 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 446 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 447 return; 448 449 /* scan status must be locked for proper checking */ 450 lockdep_assert_held(&mvm->mutex); 451 452 /* We first check if we were stopping a scan, in which case we 453 * just clear the stopping flag. Then we check if it was a 454 * firmware initiated stop, in which case we need to inform 455 * mac80211. 456 * Note that we can have a stopping and a running scan 457 * simultaneously, but we can't have two different types of 458 * scans stopping or running at the same time (since LMAC 459 * doesn't support it). 460 */ 461 462 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 463 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 464 465 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 466 aborted ? "aborted" : "completed", 467 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 468 IWL_DEBUG_SCAN(mvm, 469 "Last line %d, Last iteration %d, Time after last iteration %d\n", 470 scan_notif->last_schedule_line, 471 scan_notif->last_schedule_iteration, 472 __le32_to_cpu(scan_notif->time_after_last_iter)); 473 474 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 475 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 476 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 477 aborted ? "aborted" : "completed", 478 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 479 480 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 481 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 482 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 483 484 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 485 aborted ? "aborted" : "completed", 486 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 487 IWL_DEBUG_SCAN(mvm, 488 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 489 scan_notif->last_schedule_line, 490 scan_notif->last_schedule_iteration, 491 __le32_to_cpu(scan_notif->time_after_last_iter)); 492 493 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 494 ieee80211_sched_scan_stopped(mvm->hw); 495 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 496 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 497 struct cfg80211_scan_info info = { 498 .aborted = aborted, 499 }; 500 501 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 502 aborted ? "aborted" : "completed", 503 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 504 505 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 506 ieee80211_scan_completed(mvm->hw, &info); 507 cancel_delayed_work(&mvm->scan_timeout_dwork); 508 iwl_mvm_resume_tcm(mvm); 509 } else { 510 IWL_ERR(mvm, 511 "got scan complete notification but no scan is running\n"); 512 } 513 514 mvm->last_ebs_successful = 515 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 516 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 517 } 518 519 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 520 { 521 int i; 522 523 for (i = 0; i < PROBE_OPTION_MAX; i++) { 524 if (!ssid_list[i].len) 525 break; 526 if (ssid_list[i].len == ssid_len && 527 !memcmp(ssid_list->ssid, ssid, ssid_len)) 528 return i; 529 } 530 return -1; 531 } 532 533 /* We insert the SSIDs in an inverted order, because the FW will 534 * invert it back. 535 */ 536 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 537 struct iwl_ssid_ie *ssids, 538 u32 *ssid_bitmap) 539 { 540 int i, j; 541 int index; 542 543 /* 544 * copy SSIDs from match list. 545 * iwl_config_sched_scan_profiles() uses the order of these ssids to 546 * config match list. 547 */ 548 for (i = 0, j = params->n_match_sets - 1; 549 j >= 0 && i < PROBE_OPTION_MAX; 550 i++, j--) { 551 /* skip empty SSID matchsets */ 552 if (!params->match_sets[j].ssid.ssid_len) 553 continue; 554 ssids[i].id = WLAN_EID_SSID; 555 ssids[i].len = params->match_sets[j].ssid.ssid_len; 556 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 557 ssids[i].len); 558 } 559 560 /* add SSIDs from scan SSID list */ 561 *ssid_bitmap = 0; 562 for (j = params->n_ssids - 1; 563 j >= 0 && i < PROBE_OPTION_MAX; 564 i++, j--) { 565 index = iwl_ssid_exist(params->ssids[j].ssid, 566 params->ssids[j].ssid_len, 567 ssids); 568 if (index < 0) { 569 ssids[i].id = WLAN_EID_SSID; 570 ssids[i].len = params->ssids[j].ssid_len; 571 memcpy(ssids[i].ssid, params->ssids[j].ssid, 572 ssids[i].len); 573 *ssid_bitmap |= BIT(i); 574 } else { 575 *ssid_bitmap |= BIT(index); 576 } 577 } 578 } 579 580 static int 581 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 582 struct cfg80211_sched_scan_request *req) 583 { 584 struct iwl_scan_offload_profile *profile; 585 struct iwl_scan_offload_profile_cfg *profile_cfg; 586 struct iwl_scan_offload_blacklist *blacklist; 587 struct iwl_host_cmd cmd = { 588 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 589 .len[1] = sizeof(*profile_cfg), 590 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 591 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 592 }; 593 int blacklist_len; 594 int i; 595 int ret; 596 597 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) 598 return -EIO; 599 600 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 601 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 602 else 603 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 604 605 blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL); 606 if (!blacklist) 607 return -ENOMEM; 608 609 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); 610 if (!profile_cfg) { 611 ret = -ENOMEM; 612 goto free_blacklist; 613 } 614 615 cmd.data[0] = blacklist; 616 cmd.len[0] = sizeof(*blacklist) * blacklist_len; 617 cmd.data[1] = profile_cfg; 618 619 /* No blacklist configuration */ 620 621 profile_cfg->num_profiles = req->n_match_sets; 622 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; 623 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; 624 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; 625 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 626 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 627 628 for (i = 0; i < req->n_match_sets; i++) { 629 profile = &profile_cfg->profiles[i]; 630 profile->ssid_index = i; 631 /* Support any cipher and auth algorithm */ 632 profile->unicast_cipher = 0xff; 633 profile->auth_alg = 0xff; 634 profile->network_type = IWL_NETWORK_TYPE_ANY; 635 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 636 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 637 } 638 639 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 640 641 ret = iwl_mvm_send_cmd(mvm, &cmd); 642 kfree(profile_cfg); 643 free_blacklist: 644 kfree(blacklist); 645 646 return ret; 647 } 648 649 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 650 struct cfg80211_sched_scan_request *req) 651 { 652 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 653 IWL_DEBUG_SCAN(mvm, 654 "Sending scheduled scan with filtering, n_match_sets %d\n", 655 req->n_match_sets); 656 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 657 return false; 658 } 659 660 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 661 662 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 663 return true; 664 } 665 666 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 667 { 668 int ret; 669 struct iwl_host_cmd cmd = { 670 .id = SCAN_OFFLOAD_ABORT_CMD, 671 }; 672 u32 status = CAN_ABORT_STATUS; 673 674 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 675 if (ret) 676 return ret; 677 678 if (status != CAN_ABORT_STATUS) { 679 /* 680 * The scan abort will return 1 for success or 681 * 2 for "failure". A failure condition can be 682 * due to simply not being in an active scan which 683 * can occur if we send the scan abort before the 684 * microcode has notified us that a scan is completed. 685 */ 686 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 687 ret = -ENOENT; 688 } 689 690 return ret; 691 } 692 693 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 694 struct iwl_scan_req_tx_cmd *tx_cmd, 695 bool no_cck) 696 { 697 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 698 TX_CMD_FLG_BT_DIS); 699 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 700 NL80211_BAND_2GHZ, 701 no_cck); 702 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 703 704 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 705 TX_CMD_FLG_BT_DIS); 706 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 707 NL80211_BAND_5GHZ, 708 no_cck); 709 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 710 } 711 712 static void 713 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 714 struct ieee80211_channel **channels, 715 int n_channels, u32 ssid_bitmap, 716 struct iwl_scan_req_lmac *cmd) 717 { 718 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 719 int i; 720 721 for (i = 0; i < n_channels; i++) { 722 channel_cfg[i].channel_num = 723 cpu_to_le16(channels[i]->hw_value); 724 channel_cfg[i].iter_count = cpu_to_le16(1); 725 channel_cfg[i].iter_interval = 0; 726 channel_cfg[i].flags = 727 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 728 ssid_bitmap); 729 } 730 } 731 732 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 733 size_t len, u8 *const pos) 734 { 735 static const u8 before_ds_params[] = { 736 WLAN_EID_SSID, 737 WLAN_EID_SUPP_RATES, 738 WLAN_EID_REQUEST, 739 WLAN_EID_EXT_SUPP_RATES, 740 }; 741 size_t offs; 742 u8 *newpos = pos; 743 744 if (!iwl_mvm_rrm_scan_needed(mvm)) { 745 memcpy(newpos, ies, len); 746 return newpos + len; 747 } 748 749 offs = ieee80211_ie_split(ies, len, 750 before_ds_params, 751 ARRAY_SIZE(before_ds_params), 752 0); 753 754 memcpy(newpos, ies, offs); 755 newpos += offs; 756 757 /* Add a placeholder for DS Parameter Set element */ 758 *newpos++ = WLAN_EID_DS_PARAMS; 759 *newpos++ = 1; 760 *newpos++ = 0; 761 762 memcpy(newpos, ies + offs, len - offs); 763 newpos += len - offs; 764 765 return newpos; 766 } 767 768 #define WFA_TPC_IE_LEN 9 769 770 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 771 { 772 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 773 pos[1] = WFA_TPC_IE_LEN - 2; 774 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 775 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 776 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 777 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 778 pos[6] = 0; 779 /* pos[7] - tx power will be inserted by the FW */ 780 pos[7] = 0; 781 pos[8] = 0; 782 } 783 784 static void 785 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 786 struct ieee80211_scan_ies *ies, 787 struct iwl_mvm_scan_params *params) 788 { 789 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 790 u8 *pos, *newpos; 791 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 792 params->mac_addr : NULL; 793 794 /* 795 * Unfortunately, right now the offload scan doesn't support randomising 796 * within the firmware, so until the firmware API is ready we implement 797 * it in the driver. This means that the scan iterations won't really be 798 * random, only when it's restarted, but at least that helps a bit. 799 */ 800 if (mac_addr) 801 get_random_mask_addr(frame->sa, mac_addr, 802 params->mac_addr_mask); 803 else 804 memcpy(frame->sa, vif->addr, ETH_ALEN); 805 806 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 807 eth_broadcast_addr(frame->da); 808 eth_broadcast_addr(frame->bssid); 809 frame->seq_ctrl = 0; 810 811 pos = frame->u.probe_req.variable; 812 *pos++ = WLAN_EID_SSID; 813 *pos++ = 0; 814 815 params->preq.mac_header.offset = 0; 816 params->preq.mac_header.len = cpu_to_le16(24 + 2); 817 818 /* Insert ds parameter set element on 2.4 GHz band */ 819 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 820 ies->ies[NL80211_BAND_2GHZ], 821 ies->len[NL80211_BAND_2GHZ], 822 pos); 823 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 824 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 825 pos = newpos; 826 827 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 828 ies->len[NL80211_BAND_5GHZ]); 829 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 830 params->preq.band_data[1].len = 831 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 832 pos += ies->len[NL80211_BAND_5GHZ]; 833 834 memcpy(pos, ies->common_ies, ies->common_ie_len); 835 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 836 837 if (iwl_mvm_rrm_scan_needed(mvm) && 838 !fw_has_capa(&mvm->fw->ucode_capa, 839 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 840 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 841 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 842 WFA_TPC_IE_LEN); 843 } else { 844 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 845 } 846 } 847 848 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 849 struct iwl_scan_req_lmac *cmd, 850 struct iwl_mvm_scan_params *params) 851 { 852 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 853 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 854 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 855 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 856 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 857 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 858 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 859 } 860 861 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 862 struct ieee80211_scan_ies *ies, 863 int n_channels) 864 { 865 return ((n_ssids <= PROBE_OPTION_MAX) && 866 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 867 (ies->common_ie_len + 868 ies->len[NL80211_BAND_2GHZ] + 869 ies->len[NL80211_BAND_5GHZ] <= 870 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 871 } 872 873 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 874 struct ieee80211_vif *vif) 875 { 876 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 877 bool low_latency; 878 879 if (iwl_mvm_is_cdb_supported(mvm)) 880 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 881 else 882 low_latency = iwl_mvm_low_latency(mvm); 883 884 /* We can only use EBS if: 885 * 1. the feature is supported; 886 * 2. the last EBS was successful; 887 * 3. if only single scan, the single scan EBS API is supported; 888 * 4. it's not a p2p find operation. 889 * 5. we are not in low latency mode, 890 * or if fragmented ebs is supported by the FW 891 */ 892 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 893 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 894 vif->type != NL80211_IFTYPE_P2P_DEVICE && 895 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 896 } 897 898 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 899 { 900 return params->n_scan_plans == 1 && 901 params->scan_plans[0].iterations == 1; 902 } 903 904 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 905 { 906 return (type == IWL_SCAN_TYPE_FRAGMENTED || 907 type == IWL_SCAN_TYPE_FAST_BALANCE); 908 } 909 910 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 911 struct iwl_mvm_scan_params *params, 912 struct ieee80211_vif *vif) 913 { 914 int flags = 0; 915 916 if (params->n_ssids == 0) 917 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 918 919 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 920 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 921 922 if (iwl_mvm_is_scan_fragmented(params->type)) 923 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 924 925 if (iwl_mvm_rrm_scan_needed(mvm) && 926 fw_has_capa(&mvm->fw->ucode_capa, 927 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 928 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 929 930 if (params->pass_all) 931 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 932 else 933 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 934 935 #ifdef CONFIG_IWLWIFI_DEBUGFS 936 if (mvm->scan_iter_notif_enabled) 937 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 938 #endif 939 940 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 941 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 942 943 if (iwl_mvm_is_regular_scan(params) && 944 vif->type != NL80211_IFTYPE_P2P_DEVICE && 945 !iwl_mvm_is_scan_fragmented(params->type)) 946 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 947 948 return flags; 949 } 950 951 static void 952 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 953 struct iwl_scan_probe_req *src_p_req) 954 { 955 int i; 956 957 p_req->mac_header = src_p_req->mac_header; 958 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 959 p_req->band_data[i] = src_p_req->band_data[i]; 960 p_req->common_data = src_p_req->common_data; 961 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 962 } 963 964 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 965 struct iwl_mvm_scan_params *params) 966 { 967 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 968 struct iwl_scan_probe_req_v1 *preq = 969 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 970 mvm->fw->ucode_capa.n_scan_channels); 971 u32 ssid_bitmap = 0; 972 int i; 973 u8 band; 974 975 lockdep_assert_held(&mvm->mutex); 976 977 memset(cmd, 0, ksize(cmd)); 978 979 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 980 return -EINVAL; 981 982 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 983 984 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 985 cmd->iter_num = cpu_to_le32(1); 986 cmd->n_channels = (u8)params->n_channels; 987 988 cmd->delay = cpu_to_le32(params->delay); 989 990 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 991 vif)); 992 993 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 994 cmd->flags = cpu_to_le32(band); 995 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 996 MAC_FILTER_IN_BEACON); 997 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 998 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 999 1000 /* this API uses bits 1-20 instead of 0-19 */ 1001 ssid_bitmap <<= 1; 1002 1003 for (i = 0; i < params->n_scan_plans; i++) { 1004 struct cfg80211_sched_scan_plan *scan_plan = 1005 ¶ms->scan_plans[i]; 1006 1007 cmd->schedule[i].delay = 1008 cpu_to_le16(scan_plan->interval); 1009 cmd->schedule[i].iterations = scan_plan->iterations; 1010 cmd->schedule[i].full_scan_mul = 1; 1011 } 1012 1013 /* 1014 * If the number of iterations of the last scan plan is set to 1015 * zero, it should run infinitely. However, this is not always the case. 1016 * For example, when regular scan is requested the driver sets one scan 1017 * plan with one iteration. 1018 */ 1019 if (!cmd->schedule[i - 1].iterations) 1020 cmd->schedule[i - 1].iterations = 0xff; 1021 1022 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1023 cmd->channel_opt[0].flags = 1024 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1025 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1026 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1027 cmd->channel_opt[0].non_ebs_ratio = 1028 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 1029 cmd->channel_opt[1].flags = 1030 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1031 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1032 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1033 cmd->channel_opt[1].non_ebs_ratio = 1034 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1035 } 1036 1037 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1038 params->n_channels, ssid_bitmap, cmd); 1039 1040 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1041 1042 return 0; 1043 } 1044 1045 static int rate_to_scan_rate_flag(unsigned int rate) 1046 { 1047 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1048 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1049 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1050 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1051 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1052 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1053 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1054 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1055 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1056 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1057 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1058 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1059 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1060 }; 1061 1062 return rate_to_scan_rate[rate]; 1063 } 1064 1065 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1066 { 1067 struct ieee80211_supported_band *band; 1068 unsigned int rates = 0; 1069 int i; 1070 1071 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1072 for (i = 0; i < band->n_bitrates; i++) 1073 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1074 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1075 for (i = 0; i < band->n_bitrates; i++) 1076 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1077 1078 /* Set both basic rates and supported rates */ 1079 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1080 1081 return cpu_to_le32(rates); 1082 } 1083 1084 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1085 struct iwl_scan_dwell *dwell) 1086 { 1087 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1088 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1089 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1090 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1091 } 1092 1093 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1094 u32 max_channels) 1095 { 1096 struct ieee80211_supported_band *band; 1097 int i, j = 0; 1098 1099 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1100 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1101 channels[j] = band->channels[i].hw_value; 1102 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1103 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1104 channels[j] = band->channels[i].hw_value; 1105 } 1106 1107 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1108 u32 flags, u8 channel_flags, 1109 u32 max_channels) 1110 { 1111 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1112 struct iwl_scan_config_v1 *cfg = config; 1113 1114 cfg->flags = cpu_to_le32(flags); 1115 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1116 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1117 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1118 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1119 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1120 1121 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1122 1123 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1124 1125 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1126 cfg->channel_flags = channel_flags; 1127 1128 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1129 } 1130 1131 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1132 u32 flags, u8 channel_flags, 1133 u32 max_channels) 1134 { 1135 struct iwl_scan_config_v2 *cfg = config; 1136 1137 cfg->flags = cpu_to_le32(flags); 1138 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1139 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1140 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1141 1142 if (iwl_mvm_is_cdb_supported(mvm)) { 1143 enum iwl_mvm_scan_type lb_type, hb_type; 1144 1145 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1146 NL80211_BAND_2GHZ); 1147 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1148 NL80211_BAND_5GHZ); 1149 1150 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1151 cpu_to_le32(scan_timing[lb_type].max_out_time); 1152 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1153 cpu_to_le32(scan_timing[lb_type].suspend_time); 1154 1155 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1156 cpu_to_le32(scan_timing[hb_type].max_out_time); 1157 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1158 cpu_to_le32(scan_timing[hb_type].suspend_time); 1159 } else { 1160 enum iwl_mvm_scan_type type = 1161 iwl_mvm_get_scan_type(mvm, NULL); 1162 1163 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1164 cpu_to_le32(scan_timing[type].max_out_time); 1165 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1166 cpu_to_le32(scan_timing[type].suspend_time); 1167 } 1168 1169 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1170 1171 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1172 1173 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1174 cfg->channel_flags = channel_flags; 1175 1176 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1177 } 1178 1179 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1180 { 1181 void *cfg; 1182 int ret, cmd_size; 1183 struct iwl_host_cmd cmd = { 1184 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1185 }; 1186 enum iwl_mvm_scan_type type; 1187 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1188 int num_channels = 1189 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1190 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1191 u32 flags; 1192 u8 channel_flags; 1193 1194 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1195 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1196 1197 if (iwl_mvm_is_cdb_supported(mvm)) { 1198 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1199 NL80211_BAND_2GHZ); 1200 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1201 NL80211_BAND_5GHZ); 1202 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1203 return 0; 1204 } else { 1205 type = iwl_mvm_get_scan_type(mvm, NULL); 1206 if (type == mvm->scan_type) 1207 return 0; 1208 } 1209 1210 if (iwl_mvm_cdb_scan_api(mvm)) 1211 cmd_size = sizeof(struct iwl_scan_config_v2); 1212 else 1213 cmd_size = sizeof(struct iwl_scan_config_v1); 1214 cmd_size += num_channels; 1215 1216 cfg = kzalloc(cmd_size, GFP_KERNEL); 1217 if (!cfg) 1218 return -ENOMEM; 1219 1220 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1221 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1222 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1223 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1224 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1225 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1226 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1227 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1228 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1229 SCAN_CONFIG_N_CHANNELS(num_channels) | 1230 (iwl_mvm_is_scan_fragmented(type) ? 1231 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1232 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1233 1234 channel_flags = IWL_CHANNEL_FLAG_EBS | 1235 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1236 IWL_CHANNEL_FLAG_EBS_ADD | 1237 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1238 1239 /* 1240 * Check for fragmented scan on LMAC2 - high band. 1241 * LMAC1 - low band is checked above. 1242 */ 1243 if (iwl_mvm_cdb_scan_api(mvm)) { 1244 if (iwl_mvm_is_cdb_supported(mvm)) 1245 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1246 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1247 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1248 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1249 num_channels); 1250 } else { 1251 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1252 num_channels); 1253 } 1254 1255 cmd.data[0] = cfg; 1256 cmd.len[0] = cmd_size; 1257 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1258 1259 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1260 1261 ret = iwl_mvm_send_cmd(mvm, &cmd); 1262 if (!ret) { 1263 mvm->scan_type = type; 1264 mvm->hb_scan_type = hb_type; 1265 } 1266 1267 kfree(cfg); 1268 return ret; 1269 } 1270 1271 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1272 { 1273 struct iwl_scan_config cfg; 1274 struct iwl_host_cmd cmd = { 1275 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1276 .len[0] = sizeof(cfg), 1277 .data[0] = &cfg, 1278 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1279 }; 1280 1281 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1282 return iwl_mvm_legacy_config_scan(mvm); 1283 1284 memset(&cfg, 0, sizeof(cfg)); 1285 1286 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1287 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1288 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1289 1290 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1291 1292 return iwl_mvm_send_cmd(mvm, &cmd); 1293 } 1294 1295 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1296 { 1297 int i; 1298 1299 for (i = 0; i < mvm->max_scans; i++) 1300 if (mvm->scan_uid_status[i] == status) 1301 return i; 1302 1303 return -ENOENT; 1304 } 1305 1306 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1307 struct iwl_scan_req_umac *cmd, 1308 struct iwl_mvm_scan_params *params) 1309 { 1310 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1311 u8 active_dwell, passive_dwell; 1312 1313 timing = &scan_timing[params->type]; 1314 active_dwell = params->measurement_dwell ? 1315 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE; 1316 passive_dwell = params->measurement_dwell ? 1317 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE; 1318 1319 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1320 cmd->v7.adwell_default_n_aps_social = 1321 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1322 cmd->v7.adwell_default_n_aps = 1323 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1324 1325 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1326 cmd->v9.adwell_default_hb_n_aps = 1327 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1328 1329 /* if custom max budget was configured with debugfs */ 1330 if (IWL_MVM_ADWELL_MAX_BUDGET) 1331 cmd->v7.adwell_max_budget = 1332 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1333 else if (params->ssids && params->ssids[0].ssid_len) 1334 cmd->v7.adwell_max_budget = 1335 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1336 else 1337 cmd->v7.adwell_max_budget = 1338 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1339 1340 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1341 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1342 cpu_to_le32(timing->max_out_time); 1343 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1344 cpu_to_le32(timing->suspend_time); 1345 1346 if (iwl_mvm_is_cdb_supported(mvm)) { 1347 hb_timing = &scan_timing[params->hb_type]; 1348 1349 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1350 cpu_to_le32(hb_timing->max_out_time); 1351 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1352 cpu_to_le32(hb_timing->suspend_time); 1353 } 1354 1355 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1356 cmd->v7.active_dwell = active_dwell; 1357 cmd->v7.passive_dwell = passive_dwell; 1358 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1359 } else { 1360 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1361 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1362 if (iwl_mvm_is_cdb_supported(mvm)) { 1363 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1364 active_dwell; 1365 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1366 passive_dwell; 1367 } 1368 } 1369 } else { 1370 cmd->v1.extended_dwell = params->measurement_dwell ? 1371 params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED; 1372 cmd->v1.active_dwell = active_dwell; 1373 cmd->v1.passive_dwell = passive_dwell; 1374 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1375 1376 if (iwl_mvm_is_cdb_supported(mvm)) { 1377 hb_timing = &scan_timing[params->hb_type]; 1378 1379 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1380 cpu_to_le32(hb_timing->max_out_time); 1381 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1382 cpu_to_le32(hb_timing->suspend_time); 1383 } 1384 1385 if (iwl_mvm_cdb_scan_api(mvm)) { 1386 cmd->v6.scan_priority = 1387 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1388 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1389 cpu_to_le32(timing->max_out_time); 1390 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1391 cpu_to_le32(timing->suspend_time); 1392 } else { 1393 cmd->v1.scan_priority = 1394 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1395 cmd->v1.max_out_time = 1396 cpu_to_le32(timing->max_out_time); 1397 cmd->v1.suspend_time = 1398 cpu_to_le32(timing->suspend_time); 1399 } 1400 } 1401 1402 if (iwl_mvm_is_regular_scan(params)) 1403 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1404 else 1405 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1406 } 1407 1408 static void 1409 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1410 struct ieee80211_channel **channels, 1411 int n_channels, u32 ssid_bitmap, 1412 struct iwl_scan_channel_cfg_umac *channel_cfg) 1413 { 1414 int i; 1415 1416 for (i = 0; i < n_channels; i++) { 1417 channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); 1418 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1419 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1420 enum nl80211_band band = channels[i]->band; 1421 1422 channel_cfg[i].v2.band = 1423 iwl_mvm_phy_band_from_nl80211(band); 1424 channel_cfg[i].v2.iter_count = 1; 1425 channel_cfg[i].v2.iter_interval = 0; 1426 } else { 1427 channel_cfg[i].v1.iter_count = 1; 1428 channel_cfg[i].v1.iter_interval = 0; 1429 } 1430 } 1431 } 1432 1433 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1434 struct iwl_mvm_scan_params *params, 1435 struct ieee80211_vif *vif) 1436 { 1437 u16 flags = 0; 1438 1439 if (params->n_ssids == 0) 1440 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1441 1442 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1443 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1444 1445 if (iwl_mvm_is_scan_fragmented(params->type)) 1446 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1447 1448 if (iwl_mvm_is_cdb_supported(mvm) && 1449 iwl_mvm_is_scan_fragmented(params->hb_type)) 1450 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1451 1452 if (iwl_mvm_rrm_scan_needed(mvm) && 1453 fw_has_capa(&mvm->fw->ucode_capa, 1454 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1455 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1456 1457 if (params->pass_all) 1458 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1459 else 1460 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1461 1462 if (!iwl_mvm_is_regular_scan(params)) 1463 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1464 1465 if (params->measurement_dwell) 1466 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1467 1468 #ifdef CONFIG_IWLWIFI_DEBUGFS 1469 if (mvm->scan_iter_notif_enabled) 1470 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1471 #endif 1472 1473 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1474 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1475 1476 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE && 1477 vif->type != NL80211_IFTYPE_P2P_DEVICE) 1478 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1479 1480 /* 1481 * Extended dwell is relevant only for low band to start with, as it is 1482 * being used for social channles only (1, 6, 11), so we can check 1483 * only scan type on low band also for CDB. 1484 */ 1485 if (iwl_mvm_is_regular_scan(params) && 1486 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1487 !iwl_mvm_is_scan_fragmented(params->type) && 1488 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1489 !iwl_mvm_is_oce_supported(mvm)) 1490 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1491 1492 if (iwl_mvm_is_oce_supported(mvm)) { 1493 if ((params->flags & 1494 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1495 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1496 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1497 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1498 * the same bit, we need to make sure that we use this bit here 1499 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1500 * used. */ 1501 if ((params->flags & 1502 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1503 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1504 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1505 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1506 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1507 } 1508 1509 return flags; 1510 } 1511 1512 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1513 struct iwl_mvm_scan_params *params, 1514 int type) 1515 { 1516 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 1517 struct iwl_scan_umac_chan_param *chan_param; 1518 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 1519 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 1520 mvm->fw->ucode_capa.n_scan_channels; 1521 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 1522 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 1523 struct iwl_scan_req_umac_tail_v1 *tail_v1; 1524 struct iwl_ssid_ie *direct_scan; 1525 int uid, i; 1526 u32 ssid_bitmap = 0; 1527 u8 channel_flags = 0; 1528 u16 gen_flags; 1529 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1530 1531 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 1532 1533 lockdep_assert_held(&mvm->mutex); 1534 1535 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 1536 return -EINVAL; 1537 1538 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 1539 if (uid < 0) 1540 return uid; 1541 1542 memset(cmd, 0, ksize(cmd)); 1543 1544 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 1545 1546 mvm->scan_uid_status[uid] = type; 1547 1548 cmd->uid = cpu_to_le32(uid); 1549 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 1550 cmd->general_flags = cpu_to_le16(gen_flags); 1551 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1552 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 1553 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 1554 IWL_SCAN_NUM_OF_FRAGS; 1555 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 1556 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 1557 IWL_SCAN_NUM_OF_FRAGS; 1558 1559 cmd->v8.general_flags2 = 1560 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 1561 } 1562 1563 cmd->scan_start_mac_id = scan_vif->id; 1564 1565 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1566 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 1567 1568 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1569 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 1570 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1571 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1572 1573 /* set fragmented ebs for fragmented scan on HB channels */ 1574 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 1575 if (gen_flags & 1576 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 1577 (!iwl_mvm_is_cdb_supported(mvm) && 1578 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 1579 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1580 } 1581 } 1582 1583 chan_param->flags = channel_flags; 1584 chan_param->count = params->n_channels; 1585 1586 for (i = 0; i < params->n_scan_plans; i++) { 1587 struct cfg80211_sched_scan_plan *scan_plan = 1588 ¶ms->scan_plans[i]; 1589 1590 tail_v2->schedule[i].iter_count = scan_plan->iterations; 1591 tail_v2->schedule[i].interval = 1592 cpu_to_le16(scan_plan->interval); 1593 } 1594 1595 /* 1596 * If the number of iterations of the last scan plan is set to 1597 * zero, it should run infinitely. However, this is not always the case. 1598 * For example, when regular scan is requested the driver sets one scan 1599 * plan with one iteration. 1600 */ 1601 if (!tail_v2->schedule[i - 1].iter_count) 1602 tail_v2->schedule[i - 1].iter_count = 0xff; 1603 1604 tail_v2->delay = cpu_to_le16(params->delay); 1605 1606 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1607 tail_v2->preq = params->preq; 1608 direct_scan = tail_v2->direct_scan; 1609 } else { 1610 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 1611 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 1612 ¶ms->preq); 1613 direct_scan = tail_v1->direct_scan; 1614 } 1615 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 1616 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 1617 params->n_channels, ssid_bitmap, 1618 cmd_data); 1619 return 0; 1620 } 1621 1622 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 1623 { 1624 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 1625 } 1626 1627 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 1628 { 1629 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1630 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1631 1632 /* This looks a bit arbitrary, but the idea is that if we run 1633 * out of possible simultaneous scans and the userspace is 1634 * trying to run a scan type that is already running, we 1635 * return -EBUSY. But if the userspace wants to start a 1636 * different type of scan, we stop the opposite type to make 1637 * space for the new request. The reason is backwards 1638 * compatibility with old wpa_supplicant that wouldn't stop a 1639 * scheduled scan before starting a normal scan. 1640 */ 1641 1642 /* FW supports only a single periodic scan */ 1643 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 1644 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 1645 return -EBUSY; 1646 1647 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 1648 return 0; 1649 1650 /* Use a switch, even though this is a bitmask, so that more 1651 * than one bits set will fall in default and we will warn. 1652 */ 1653 switch (type) { 1654 case IWL_MVM_SCAN_REGULAR: 1655 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 1656 return -EBUSY; 1657 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1658 case IWL_MVM_SCAN_SCHED: 1659 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 1660 return -EBUSY; 1661 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 1662 case IWL_MVM_SCAN_NETDETECT: 1663 /* For non-unified images, there's no need to stop 1664 * anything for net-detect since the firmware is 1665 * restarted anyway. This way, any sched scans that 1666 * were running will be restarted when we resume. 1667 */ 1668 if (!unified_image) 1669 return 0; 1670 1671 /* If this is a unified image and we ran out of scans, 1672 * we need to stop something. Prefer stopping regular 1673 * scans, because the results are useless at this 1674 * point, and we should be able to keep running 1675 * another scheduled scan while suspended. 1676 */ 1677 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 1678 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 1679 true); 1680 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 1681 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 1682 true); 1683 /* Something is wrong if no scan was running but we 1684 * ran out of scans. 1685 */ 1686 /* fall through */ 1687 default: 1688 WARN_ON(1); 1689 break; 1690 } 1691 1692 return -EIO; 1693 } 1694 1695 #define SCAN_TIMEOUT 20000 1696 1697 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 1698 { 1699 struct delayed_work *delayed_work = to_delayed_work(work); 1700 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1701 scan_timeout_dwork); 1702 1703 IWL_ERR(mvm, "regular scan timed out\n"); 1704 1705 iwl_force_nmi(mvm->trans); 1706 } 1707 1708 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 1709 struct iwl_mvm_scan_params *params, 1710 struct ieee80211_vif *vif) 1711 { 1712 if (iwl_mvm_is_cdb_supported(mvm)) { 1713 params->type = 1714 iwl_mvm_get_scan_type_band(mvm, vif, 1715 NL80211_BAND_2GHZ); 1716 params->hb_type = 1717 iwl_mvm_get_scan_type_band(mvm, vif, 1718 NL80211_BAND_5GHZ); 1719 } else { 1720 params->type = iwl_mvm_get_scan_type(mvm, vif); 1721 } 1722 } 1723 1724 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1725 struct cfg80211_scan_request *req, 1726 struct ieee80211_scan_ies *ies) 1727 { 1728 struct iwl_host_cmd hcmd = { 1729 .len = { iwl_mvm_scan_size(mvm), }, 1730 .data = { mvm->scan_cmd, }, 1731 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 1732 }; 1733 struct iwl_mvm_scan_params params = {}; 1734 int ret; 1735 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 1736 1737 lockdep_assert_held(&mvm->mutex); 1738 1739 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 1740 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 1741 return -EBUSY; 1742 } 1743 1744 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 1745 if (ret) 1746 return ret; 1747 1748 /* we should have failed registration if scan_cmd was NULL */ 1749 if (WARN_ON(!mvm->scan_cmd)) 1750 return -ENOMEM; 1751 1752 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 1753 return -ENOBUFS; 1754 1755 params.n_ssids = req->n_ssids; 1756 params.flags = req->flags; 1757 params.n_channels = req->n_channels; 1758 params.delay = 0; 1759 params.ssids = req->ssids; 1760 params.channels = req->channels; 1761 params.mac_addr = req->mac_addr; 1762 params.mac_addr_mask = req->mac_addr_mask; 1763 params.no_cck = req->no_cck; 1764 params.pass_all = true; 1765 params.n_match_sets = 0; 1766 params.match_sets = NULL; 1767 1768 params.scan_plans = &scan_plan; 1769 params.n_scan_plans = 1; 1770 1771 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 1772 1773 ret = iwl_mvm_get_measurement_dwell(mvm, req, ¶ms); 1774 if (ret < 0) 1775 return ret; 1776 1777 params.measurement_dwell = ret; 1778 1779 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 1780 1781 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1782 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 1783 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, 1784 IWL_MVM_SCAN_REGULAR); 1785 } else { 1786 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; 1787 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); 1788 } 1789 1790 if (ret) 1791 return ret; 1792 1793 iwl_mvm_pause_tcm(mvm, false); 1794 1795 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1796 if (ret) { 1797 /* If the scan failed, it usually means that the FW was unable 1798 * to allocate the time events. Warn on it, but maybe we 1799 * should try to send the command again with different params. 1800 */ 1801 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 1802 iwl_mvm_resume_tcm(mvm); 1803 return ret; 1804 } 1805 1806 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 1807 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 1808 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 1809 1810 schedule_delayed_work(&mvm->scan_timeout_dwork, 1811 msecs_to_jiffies(SCAN_TIMEOUT)); 1812 1813 return 0; 1814 } 1815 1816 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 1817 struct ieee80211_vif *vif, 1818 struct cfg80211_sched_scan_request *req, 1819 struct ieee80211_scan_ies *ies, 1820 int type) 1821 { 1822 struct iwl_host_cmd hcmd = { 1823 .len = { iwl_mvm_scan_size(mvm), }, 1824 .data = { mvm->scan_cmd, }, 1825 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 1826 }; 1827 struct iwl_mvm_scan_params params = {}; 1828 int ret; 1829 1830 lockdep_assert_held(&mvm->mutex); 1831 1832 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 1833 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 1834 return -EBUSY; 1835 } 1836 1837 ret = iwl_mvm_check_running_scans(mvm, type); 1838 if (ret) 1839 return ret; 1840 1841 /* we should have failed registration if scan_cmd was NULL */ 1842 if (WARN_ON(!mvm->scan_cmd)) 1843 return -ENOMEM; 1844 1845 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 1846 return -ENOBUFS; 1847 1848 params.n_ssids = req->n_ssids; 1849 params.flags = req->flags; 1850 params.n_channels = req->n_channels; 1851 params.ssids = req->ssids; 1852 params.channels = req->channels; 1853 params.mac_addr = req->mac_addr; 1854 params.mac_addr_mask = req->mac_addr_mask; 1855 params.no_cck = false; 1856 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 1857 params.n_match_sets = req->n_match_sets; 1858 params.match_sets = req->match_sets; 1859 if (!req->n_scan_plans) 1860 return -EINVAL; 1861 1862 params.n_scan_plans = req->n_scan_plans; 1863 params.scan_plans = req->scan_plans; 1864 1865 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 1866 1867 /* In theory, LMAC scans can handle a 32-bit delay, but since 1868 * waiting for over 18 hours to start the scan is a bit silly 1869 * and to keep it aligned with UMAC scans (which only support 1870 * 16-bit delays), trim it down to 16-bits. 1871 */ 1872 if (req->delay > U16_MAX) { 1873 IWL_DEBUG_SCAN(mvm, 1874 "delay value is > 16-bits, set to max possible\n"); 1875 params.delay = U16_MAX; 1876 } else { 1877 params.delay = req->delay; 1878 } 1879 1880 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 1881 if (ret) 1882 return ret; 1883 1884 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 1885 1886 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1887 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 1888 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, type); 1889 } else { 1890 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; 1891 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); 1892 } 1893 1894 if (ret) 1895 return ret; 1896 1897 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1898 if (!ret) { 1899 IWL_DEBUG_SCAN(mvm, 1900 "Sched scan request was sent successfully\n"); 1901 mvm->scan_status |= type; 1902 } else { 1903 /* If the scan failed, it usually means that the FW was unable 1904 * to allocate the time events. Warn on it, but maybe we 1905 * should try to send the command again with different params. 1906 */ 1907 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 1908 } 1909 1910 return ret; 1911 } 1912 1913 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 1914 struct iwl_rx_cmd_buffer *rxb) 1915 { 1916 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1917 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 1918 u32 uid = __le32_to_cpu(notif->uid); 1919 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 1920 1921 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 1922 return; 1923 1924 /* if the scan is already stopping, we don't need to notify mac80211 */ 1925 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 1926 struct cfg80211_scan_info info = { 1927 .aborted = aborted, 1928 .scan_start_tsf = mvm->scan_start, 1929 }; 1930 1931 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 1932 ieee80211_scan_completed(mvm->hw, &info); 1933 mvm->scan_vif = NULL; 1934 cancel_delayed_work(&mvm->scan_timeout_dwork); 1935 iwl_mvm_resume_tcm(mvm); 1936 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 1937 ieee80211_sched_scan_stopped(mvm->hw); 1938 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 1939 } 1940 1941 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 1942 IWL_DEBUG_SCAN(mvm, 1943 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 1944 uid, mvm->scan_uid_status[uid], 1945 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 1946 "completed" : "aborted", 1947 iwl_mvm_ebs_status_str(notif->ebs_status)); 1948 IWL_DEBUG_SCAN(mvm, 1949 "Last line %d, Last iteration %d, Time from last iteration %d\n", 1950 notif->last_schedule, notif->last_iter, 1951 __le32_to_cpu(notif->time_from_last_iter)); 1952 1953 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 1954 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 1955 mvm->last_ebs_successful = false; 1956 1957 mvm->scan_uid_status[uid] = 0; 1958 } 1959 1960 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 1961 struct iwl_rx_cmd_buffer *rxb) 1962 { 1963 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1964 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 1965 1966 mvm->scan_start = le64_to_cpu(notif->start_tsf); 1967 1968 IWL_DEBUG_SCAN(mvm, 1969 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 1970 notif->status, notif->scanned_channels); 1971 1972 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 1973 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 1974 ieee80211_sched_scan_results(mvm->hw); 1975 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 1976 } 1977 1978 IWL_DEBUG_SCAN(mvm, 1979 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 1980 mvm->scan_start); 1981 } 1982 1983 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 1984 { 1985 struct iwl_umac_scan_abort cmd = {}; 1986 int uid, ret; 1987 1988 lockdep_assert_held(&mvm->mutex); 1989 1990 /* We should always get a valid index here, because we already 1991 * checked that this type of scan was running in the generic 1992 * code. 1993 */ 1994 uid = iwl_mvm_scan_uid_by_status(mvm, type); 1995 if (WARN_ON_ONCE(uid < 0)) 1996 return uid; 1997 1998 cmd.uid = cpu_to_le32(uid); 1999 2000 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2001 2002 ret = iwl_mvm_send_cmd_pdu(mvm, 2003 iwl_cmd_id(SCAN_ABORT_UMAC, 2004 IWL_ALWAYS_LONG_GROUP, 0), 2005 0, sizeof(cmd), &cmd); 2006 if (!ret) 2007 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2008 2009 return ret; 2010 } 2011 2012 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2013 { 2014 struct iwl_notification_wait wait_scan_done; 2015 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2016 SCAN_OFFLOAD_COMPLETE, }; 2017 int ret; 2018 2019 lockdep_assert_held(&mvm->mutex); 2020 2021 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2022 scan_done_notif, 2023 ARRAY_SIZE(scan_done_notif), 2024 NULL, NULL); 2025 2026 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2027 2028 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2029 ret = iwl_mvm_umac_scan_abort(mvm, type); 2030 else 2031 ret = iwl_mvm_lmac_scan_abort(mvm); 2032 2033 if (ret) { 2034 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2035 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2036 return ret; 2037 } 2038 2039 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2040 1 * HZ); 2041 } 2042 2043 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2044 { 2045 int base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2046 int tail_size; 2047 2048 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2049 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2050 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2051 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2052 else if (iwl_mvm_cdb_scan_api(mvm)) 2053 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2054 2055 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2056 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2057 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2058 else 2059 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2060 2061 return base_size + 2062 sizeof(struct iwl_scan_channel_cfg_umac) * 2063 mvm->fw->ucode_capa.n_scan_channels + 2064 tail_size; 2065 } 2066 return sizeof(struct iwl_scan_req_lmac) + 2067 sizeof(struct iwl_scan_channel_cfg_lmac) * 2068 mvm->fw->ucode_capa.n_scan_channels + 2069 sizeof(struct iwl_scan_probe_req_v1); 2070 } 2071 2072 /* 2073 * This function is used in nic restart flow, to inform mac80211 about scans 2074 * that was aborted by restart flow or by an assert. 2075 */ 2076 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2077 { 2078 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2079 int uid, i; 2080 2081 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2082 if (uid >= 0) { 2083 struct cfg80211_scan_info info = { 2084 .aborted = true, 2085 }; 2086 2087 ieee80211_scan_completed(mvm->hw, &info); 2088 mvm->scan_uid_status[uid] = 0; 2089 } 2090 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2091 if (uid >= 0 && !mvm->fw_restart) { 2092 ieee80211_sched_scan_stopped(mvm->hw); 2093 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2094 mvm->scan_uid_status[uid] = 0; 2095 } 2096 2097 /* We shouldn't have any UIDs still set. Loop over all the 2098 * UIDs to make sure there's nothing left there and warn if 2099 * any is found. 2100 */ 2101 for (i = 0; i < mvm->max_scans; i++) { 2102 if (WARN_ONCE(mvm->scan_uid_status[i], 2103 "UMAC scan UID %d status was not cleaned\n", 2104 i)) 2105 mvm->scan_uid_status[i] = 0; 2106 } 2107 } else { 2108 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2109 struct cfg80211_scan_info info = { 2110 .aborted = true, 2111 }; 2112 2113 ieee80211_scan_completed(mvm->hw, &info); 2114 } 2115 2116 /* Sched scan will be restarted by mac80211 in 2117 * restart_hw, so do not report if FW is about to be 2118 * restarted. 2119 */ 2120 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2121 !mvm->fw_restart) { 2122 ieee80211_sched_scan_stopped(mvm->hw); 2123 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2124 } 2125 } 2126 } 2127 2128 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2129 { 2130 int ret; 2131 2132 if (!(mvm->scan_status & type)) 2133 return 0; 2134 2135 if (iwl_mvm_is_radio_killed(mvm)) { 2136 ret = 0; 2137 goto out; 2138 } 2139 2140 ret = iwl_mvm_scan_stop_wait(mvm, type); 2141 if (!ret) 2142 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2143 out: 2144 /* Clear the scan status so the next scan requests will 2145 * succeed and mark the scan as stopping, so that the Rx 2146 * handler doesn't do anything, as the scan was stopped from 2147 * above. 2148 */ 2149 mvm->scan_status &= ~type; 2150 2151 if (type == IWL_MVM_SCAN_REGULAR) { 2152 cancel_delayed_work(&mvm->scan_timeout_dwork); 2153 if (notify) { 2154 struct cfg80211_scan_info info = { 2155 .aborted = true, 2156 }; 2157 2158 ieee80211_scan_completed(mvm->hw, &info); 2159 } 2160 } else if (notify) { 2161 ieee80211_sched_scan_stopped(mvm->hw); 2162 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2163 } 2164 2165 return ret; 2166 } 2167