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 #define IWL_SCAN_BAND_5_2 0 83 #define IWL_SCAN_BAND_2_4 1 84 85 /* adaptive dwell max budget time [TU] for full scan */ 86 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 87 /* adaptive dwell max budget time [TU] for directed scan */ 88 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 89 /* adaptive dwell default high band APs number */ 90 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 91 /* adaptive dwell default low band APs number */ 92 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 93 /* adaptive dwell default APs number in social channels (1, 6, 11) */ 94 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 95 96 struct iwl_mvm_scan_timing_params { 97 u32 suspend_time; 98 u32 max_out_time; 99 }; 100 101 static struct iwl_mvm_scan_timing_params scan_timing[] = { 102 [IWL_SCAN_TYPE_UNASSOC] = { 103 .suspend_time = 0, 104 .max_out_time = 0, 105 }, 106 [IWL_SCAN_TYPE_WILD] = { 107 .suspend_time = 30, 108 .max_out_time = 120, 109 }, 110 [IWL_SCAN_TYPE_MILD] = { 111 .suspend_time = 120, 112 .max_out_time = 120, 113 }, 114 [IWL_SCAN_TYPE_FRAGMENTED] = { 115 .suspend_time = 95, 116 .max_out_time = 44, 117 }, 118 [IWL_SCAN_TYPE_FAST_BALANCE] = { 119 .suspend_time = 30, 120 .max_out_time = 37, 121 }, 122 }; 123 124 struct iwl_mvm_scan_params { 125 /* For CDB this is low band scan type, for non-CDB - type. */ 126 enum iwl_mvm_scan_type type; 127 enum iwl_mvm_scan_type hb_type; 128 u32 n_channels; 129 u16 delay; 130 int n_ssids; 131 struct cfg80211_ssid *ssids; 132 struct ieee80211_channel **channels; 133 u32 flags; 134 u8 *mac_addr; 135 u8 *mac_addr_mask; 136 bool no_cck; 137 bool pass_all; 138 int n_match_sets; 139 struct iwl_scan_probe_req preq; 140 struct cfg80211_match_set *match_sets; 141 int n_scan_plans; 142 struct cfg80211_sched_scan_plan *scan_plans; 143 u32 measurement_dwell; 144 }; 145 146 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 147 { 148 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 149 150 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 151 return (void *)&cmd->v8.data; 152 153 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 154 return (void *)&cmd->v7.data; 155 156 if (iwl_mvm_cdb_scan_api(mvm)) 157 return (void *)&cmd->v6.data; 158 159 return (void *)&cmd->v1.data; 160 } 161 162 static inline struct iwl_scan_umac_chan_param * 163 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 164 { 165 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 166 167 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 168 return &cmd->v8.channel; 169 170 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 171 return &cmd->v7.channel; 172 173 if (iwl_mvm_cdb_scan_api(mvm)) 174 return &cmd->v6.channel; 175 176 return &cmd->v1.channel; 177 } 178 179 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 180 { 181 if (mvm->scan_rx_ant != ANT_NONE) 182 return mvm->scan_rx_ant; 183 return iwl_mvm_get_valid_rx_ant(mvm); 184 } 185 186 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 187 { 188 u16 rx_chain; 189 u8 rx_ant; 190 191 rx_ant = iwl_mvm_scan_rx_ant(mvm); 192 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 193 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 194 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 195 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 196 return cpu_to_le16(rx_chain); 197 } 198 199 static __le32 iwl_mvm_scan_rxon_flags(enum nl80211_band band) 200 { 201 if (band == NL80211_BAND_2GHZ) 202 return cpu_to_le32(PHY_BAND_24); 203 else 204 return cpu_to_le32(PHY_BAND_5); 205 } 206 207 static inline __le32 208 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 209 bool no_cck) 210 { 211 u32 tx_ant; 212 213 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 214 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 215 216 if (band == NL80211_BAND_2GHZ && !no_cck) 217 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | 218 tx_ant); 219 else 220 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 221 } 222 223 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, 224 struct ieee80211_vif *vif) 225 { 226 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 227 int *global_cnt = data; 228 229 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 230 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 231 *global_cnt += 1; 232 } 233 234 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 235 { 236 return mvm->tcm.result.global_load; 237 } 238 239 static enum iwl_mvm_traffic_load 240 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 241 { 242 return mvm->tcm.result.band_load[band]; 243 } 244 245 struct iwl_is_dcm_with_go_iterator_data { 246 struct ieee80211_vif *current_vif; 247 bool is_dcm_with_p2p_go; 248 }; 249 250 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, 251 struct ieee80211_vif *vif) 252 { 253 struct iwl_is_dcm_with_go_iterator_data *data = _data; 254 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 255 struct iwl_mvm_vif *curr_mvmvif = 256 iwl_mvm_vif_from_mac80211(data->current_vif); 257 258 /* exclude the given vif */ 259 if (vif == data->current_vif) 260 return; 261 262 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 263 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 264 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 265 data->is_dcm_with_p2p_go = true; 266 } 267 268 static enum 269 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 270 struct ieee80211_vif *vif, 271 enum iwl_mvm_traffic_load load, 272 bool low_latency) 273 { 274 int global_cnt = 0; 275 276 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 277 IEEE80211_IFACE_ITER_NORMAL, 278 iwl_mvm_scan_condition_iterator, 279 &global_cnt); 280 if (!global_cnt) 281 return IWL_SCAN_TYPE_UNASSOC; 282 283 if (fw_has_api(&mvm->fw->ucode_capa, 284 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 285 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 286 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 287 return IWL_SCAN_TYPE_FRAGMENTED; 288 289 /* in case of DCM with GO where BSS DTIM interval < 220msec 290 * set all scan requests as fast-balance scan 291 * */ 292 if (vif && vif->type == NL80211_IFTYPE_STATION && 293 vif->bss_conf.dtim_period < 220) { 294 struct iwl_is_dcm_with_go_iterator_data data = { 295 .current_vif = vif, 296 .is_dcm_with_p2p_go = false, 297 }; 298 299 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 300 IEEE80211_IFACE_ITER_NORMAL, 301 iwl_mvm_is_dcm_with_go_iterator, 302 &data); 303 if (data.is_dcm_with_p2p_go) 304 return IWL_SCAN_TYPE_FAST_BALANCE; 305 } 306 } 307 308 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 309 return IWL_SCAN_TYPE_MILD; 310 311 return IWL_SCAN_TYPE_WILD; 312 } 313 314 static enum 315 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 316 struct ieee80211_vif *vif) 317 { 318 enum iwl_mvm_traffic_load load; 319 bool low_latency; 320 321 load = iwl_mvm_get_traffic_load(mvm); 322 low_latency = iwl_mvm_low_latency(mvm); 323 324 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 325 } 326 327 static enum 328 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 329 struct ieee80211_vif *vif, 330 enum nl80211_band band) 331 { 332 enum iwl_mvm_traffic_load load; 333 bool low_latency; 334 335 load = iwl_mvm_get_traffic_load_band(mvm, band); 336 low_latency = iwl_mvm_low_latency_band(mvm, band); 337 338 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 339 } 340 341 static int 342 iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm, 343 struct cfg80211_scan_request *req, 344 struct iwl_mvm_scan_params *params) 345 { 346 u32 duration = scan_timing[params->type].max_out_time; 347 348 if (!req->duration) 349 return 0; 350 351 if (iwl_mvm_is_cdb_supported(mvm)) { 352 u32 hb_time = scan_timing[params->hb_type].max_out_time; 353 354 duration = min_t(u32, duration, hb_time); 355 } 356 357 if (req->duration_mandatory && req->duration > duration) { 358 IWL_DEBUG_SCAN(mvm, 359 "Measurement scan - too long dwell %hu (max out time %u)\n", 360 req->duration, 361 duration); 362 return -EOPNOTSUPP; 363 } 364 365 return min_t(u32, (u32)req->duration, duration); 366 } 367 368 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 369 { 370 /* require rrm scan whenever the fw supports it */ 371 return fw_has_capa(&mvm->fw->ucode_capa, 372 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 373 } 374 375 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 376 { 377 int max_probe_len; 378 379 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 380 381 /* we create the 802.11 header and SSID element */ 382 max_probe_len -= 24 + 2; 383 384 /* DS parameter set element is added on 2.4GHZ band if required */ 385 if (iwl_mvm_rrm_scan_needed(mvm)) 386 max_probe_len -= 3; 387 388 return max_probe_len; 389 } 390 391 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 392 { 393 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 394 395 /* TODO: [BUG] This function should return the maximum allowed size of 396 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 397 * in the same command. So the correct implementation of this function 398 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 399 * command has only 512 bytes and it would leave us with about 240 400 * bytes for scan IEs, which is clearly not enough. So meanwhile 401 * we will report an incorrect value. This may result in a failure to 402 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 403 * functions with -ENOBUFS, if a large enough probe will be provided. 404 */ 405 return max_ie_len; 406 } 407 408 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 409 struct iwl_rx_cmd_buffer *rxb) 410 { 411 struct iwl_rx_packet *pkt = rxb_addr(rxb); 412 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 413 414 IWL_DEBUG_SCAN(mvm, 415 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 416 notif->status, notif->scanned_channels); 417 418 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 419 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 420 ieee80211_sched_scan_results(mvm->hw); 421 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 422 } 423 } 424 425 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 426 struct iwl_rx_cmd_buffer *rxb) 427 { 428 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 429 ieee80211_sched_scan_results(mvm->hw); 430 } 431 432 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 433 { 434 switch (status) { 435 case IWL_SCAN_EBS_SUCCESS: 436 return "successful"; 437 case IWL_SCAN_EBS_INACTIVE: 438 return "inactive"; 439 case IWL_SCAN_EBS_FAILED: 440 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 441 default: 442 return "failed"; 443 } 444 } 445 446 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 447 struct iwl_rx_cmd_buffer *rxb) 448 { 449 struct iwl_rx_packet *pkt = rxb_addr(rxb); 450 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 451 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 452 453 /* If this happens, the firmware has mistakenly sent an LMAC 454 * notification during UMAC scans -- warn and ignore it. 455 */ 456 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 457 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 458 return; 459 460 /* scan status must be locked for proper checking */ 461 lockdep_assert_held(&mvm->mutex); 462 463 /* We first check if we were stopping a scan, in which case we 464 * just clear the stopping flag. Then we check if it was a 465 * firmware initiated stop, in which case we need to inform 466 * mac80211. 467 * Note that we can have a stopping and a running scan 468 * simultaneously, but we can't have two different types of 469 * scans stopping or running at the same time (since LMAC 470 * doesn't support it). 471 */ 472 473 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 474 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 475 476 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 477 aborted ? "aborted" : "completed", 478 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 479 IWL_DEBUG_SCAN(mvm, 480 "Last line %d, Last iteration %d, Time after last iteration %d\n", 481 scan_notif->last_schedule_line, 482 scan_notif->last_schedule_iteration, 483 __le32_to_cpu(scan_notif->time_after_last_iter)); 484 485 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 486 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 487 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 488 aborted ? "aborted" : "completed", 489 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 490 491 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 492 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 493 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 494 495 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 496 aborted ? "aborted" : "completed", 497 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 498 IWL_DEBUG_SCAN(mvm, 499 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 500 scan_notif->last_schedule_line, 501 scan_notif->last_schedule_iteration, 502 __le32_to_cpu(scan_notif->time_after_last_iter)); 503 504 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 505 ieee80211_sched_scan_stopped(mvm->hw); 506 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 507 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 508 struct cfg80211_scan_info info = { 509 .aborted = aborted, 510 }; 511 512 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 513 aborted ? "aborted" : "completed", 514 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 515 516 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 517 ieee80211_scan_completed(mvm->hw, &info); 518 cancel_delayed_work(&mvm->scan_timeout_dwork); 519 iwl_mvm_resume_tcm(mvm); 520 } else { 521 IWL_ERR(mvm, 522 "got scan complete notification but no scan is running\n"); 523 } 524 525 mvm->last_ebs_successful = 526 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 527 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 528 } 529 530 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 531 { 532 int i; 533 534 for (i = 0; i < PROBE_OPTION_MAX; i++) { 535 if (!ssid_list[i].len) 536 break; 537 if (ssid_list[i].len == ssid_len && 538 !memcmp(ssid_list->ssid, ssid, ssid_len)) 539 return i; 540 } 541 return -1; 542 } 543 544 /* We insert the SSIDs in an inverted order, because the FW will 545 * invert it back. 546 */ 547 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 548 struct iwl_ssid_ie *ssids, 549 u32 *ssid_bitmap) 550 { 551 int i, j; 552 int index; 553 554 /* 555 * copy SSIDs from match list. 556 * iwl_config_sched_scan_profiles() uses the order of these ssids to 557 * config match list. 558 */ 559 for (i = 0, j = params->n_match_sets - 1; 560 j >= 0 && i < PROBE_OPTION_MAX; 561 i++, j--) { 562 /* skip empty SSID matchsets */ 563 if (!params->match_sets[j].ssid.ssid_len) 564 continue; 565 ssids[i].id = WLAN_EID_SSID; 566 ssids[i].len = params->match_sets[j].ssid.ssid_len; 567 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 568 ssids[i].len); 569 } 570 571 /* add SSIDs from scan SSID list */ 572 *ssid_bitmap = 0; 573 for (j = params->n_ssids - 1; 574 j >= 0 && i < PROBE_OPTION_MAX; 575 i++, j--) { 576 index = iwl_ssid_exist(params->ssids[j].ssid, 577 params->ssids[j].ssid_len, 578 ssids); 579 if (index < 0) { 580 ssids[i].id = WLAN_EID_SSID; 581 ssids[i].len = params->ssids[j].ssid_len; 582 memcpy(ssids[i].ssid, params->ssids[j].ssid, 583 ssids[i].len); 584 *ssid_bitmap |= BIT(i); 585 } else { 586 *ssid_bitmap |= BIT(index); 587 } 588 } 589 } 590 591 static int 592 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 593 struct cfg80211_sched_scan_request *req) 594 { 595 struct iwl_scan_offload_profile *profile; 596 struct iwl_scan_offload_profile_cfg *profile_cfg; 597 struct iwl_scan_offload_blacklist *blacklist; 598 struct iwl_host_cmd cmd = { 599 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 600 .len[1] = sizeof(*profile_cfg), 601 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 602 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 603 }; 604 int blacklist_len; 605 int i; 606 int ret; 607 608 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) 609 return -EIO; 610 611 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 612 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 613 else 614 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 615 616 blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL); 617 if (!blacklist) 618 return -ENOMEM; 619 620 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); 621 if (!profile_cfg) { 622 ret = -ENOMEM; 623 goto free_blacklist; 624 } 625 626 cmd.data[0] = blacklist; 627 cmd.len[0] = sizeof(*blacklist) * blacklist_len; 628 cmd.data[1] = profile_cfg; 629 630 /* No blacklist configuration */ 631 632 profile_cfg->num_profiles = req->n_match_sets; 633 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; 634 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; 635 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; 636 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 637 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 638 639 for (i = 0; i < req->n_match_sets; i++) { 640 profile = &profile_cfg->profiles[i]; 641 profile->ssid_index = i; 642 /* Support any cipher and auth algorithm */ 643 profile->unicast_cipher = 0xff; 644 profile->auth_alg = 0xff; 645 profile->network_type = IWL_NETWORK_TYPE_ANY; 646 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 647 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 648 } 649 650 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 651 652 ret = iwl_mvm_send_cmd(mvm, &cmd); 653 kfree(profile_cfg); 654 free_blacklist: 655 kfree(blacklist); 656 657 return ret; 658 } 659 660 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 661 struct cfg80211_sched_scan_request *req) 662 { 663 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 664 IWL_DEBUG_SCAN(mvm, 665 "Sending scheduled scan with filtering, n_match_sets %d\n", 666 req->n_match_sets); 667 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 668 return false; 669 } 670 671 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 672 673 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 674 return true; 675 } 676 677 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 678 { 679 int ret; 680 struct iwl_host_cmd cmd = { 681 .id = SCAN_OFFLOAD_ABORT_CMD, 682 }; 683 u32 status = CAN_ABORT_STATUS; 684 685 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 686 if (ret) 687 return ret; 688 689 if (status != CAN_ABORT_STATUS) { 690 /* 691 * The scan abort will return 1 for success or 692 * 2 for "failure". A failure condition can be 693 * due to simply not being in an active scan which 694 * can occur if we send the scan abort before the 695 * microcode has notified us that a scan is completed. 696 */ 697 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 698 ret = -ENOENT; 699 } 700 701 return ret; 702 } 703 704 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 705 struct iwl_scan_req_tx_cmd *tx_cmd, 706 bool no_cck) 707 { 708 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 709 TX_CMD_FLG_BT_DIS); 710 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 711 NL80211_BAND_2GHZ, 712 no_cck); 713 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 714 715 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 716 TX_CMD_FLG_BT_DIS); 717 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 718 NL80211_BAND_5GHZ, 719 no_cck); 720 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 721 } 722 723 static void 724 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 725 struct ieee80211_channel **channels, 726 int n_channels, u32 ssid_bitmap, 727 struct iwl_scan_req_lmac *cmd) 728 { 729 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 730 int i; 731 732 for (i = 0; i < n_channels; i++) { 733 channel_cfg[i].channel_num = 734 cpu_to_le16(channels[i]->hw_value); 735 channel_cfg[i].iter_count = cpu_to_le16(1); 736 channel_cfg[i].iter_interval = 0; 737 channel_cfg[i].flags = 738 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 739 ssid_bitmap); 740 } 741 } 742 743 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 744 size_t len, u8 *const pos) 745 { 746 static const u8 before_ds_params[] = { 747 WLAN_EID_SSID, 748 WLAN_EID_SUPP_RATES, 749 WLAN_EID_REQUEST, 750 WLAN_EID_EXT_SUPP_RATES, 751 }; 752 size_t offs; 753 u8 *newpos = pos; 754 755 if (!iwl_mvm_rrm_scan_needed(mvm)) { 756 memcpy(newpos, ies, len); 757 return newpos + len; 758 } 759 760 offs = ieee80211_ie_split(ies, len, 761 before_ds_params, 762 ARRAY_SIZE(before_ds_params), 763 0); 764 765 memcpy(newpos, ies, offs); 766 newpos += offs; 767 768 /* Add a placeholder for DS Parameter Set element */ 769 *newpos++ = WLAN_EID_DS_PARAMS; 770 *newpos++ = 1; 771 *newpos++ = 0; 772 773 memcpy(newpos, ies + offs, len - offs); 774 newpos += len - offs; 775 776 return newpos; 777 } 778 779 #define WFA_TPC_IE_LEN 9 780 781 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 782 { 783 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 784 pos[1] = WFA_TPC_IE_LEN - 2; 785 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 786 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 787 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 788 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 789 pos[6] = 0; 790 /* pos[7] - tx power will be inserted by the FW */ 791 pos[7] = 0; 792 pos[8] = 0; 793 } 794 795 static void 796 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 797 struct ieee80211_scan_ies *ies, 798 struct iwl_mvm_scan_params *params) 799 { 800 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 801 u8 *pos, *newpos; 802 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 803 params->mac_addr : NULL; 804 805 /* 806 * Unfortunately, right now the offload scan doesn't support randomising 807 * within the firmware, so until the firmware API is ready we implement 808 * it in the driver. This means that the scan iterations won't really be 809 * random, only when it's restarted, but at least that helps a bit. 810 */ 811 if (mac_addr) 812 get_random_mask_addr(frame->sa, mac_addr, 813 params->mac_addr_mask); 814 else 815 memcpy(frame->sa, vif->addr, ETH_ALEN); 816 817 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 818 eth_broadcast_addr(frame->da); 819 eth_broadcast_addr(frame->bssid); 820 frame->seq_ctrl = 0; 821 822 pos = frame->u.probe_req.variable; 823 *pos++ = WLAN_EID_SSID; 824 *pos++ = 0; 825 826 params->preq.mac_header.offset = 0; 827 params->preq.mac_header.len = cpu_to_le16(24 + 2); 828 829 /* Insert ds parameter set element on 2.4 GHz band */ 830 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 831 ies->ies[NL80211_BAND_2GHZ], 832 ies->len[NL80211_BAND_2GHZ], 833 pos); 834 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 835 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 836 pos = newpos; 837 838 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 839 ies->len[NL80211_BAND_5GHZ]); 840 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 841 params->preq.band_data[1].len = 842 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 843 pos += ies->len[NL80211_BAND_5GHZ]; 844 845 memcpy(pos, ies->common_ies, ies->common_ie_len); 846 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 847 848 if (iwl_mvm_rrm_scan_needed(mvm) && 849 !fw_has_capa(&mvm->fw->ucode_capa, 850 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 851 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 852 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 853 WFA_TPC_IE_LEN); 854 } else { 855 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 856 } 857 } 858 859 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 860 struct iwl_scan_req_lmac *cmd, 861 struct iwl_mvm_scan_params *params) 862 { 863 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 864 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 865 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 866 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 867 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 868 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 869 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 870 } 871 872 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 873 struct ieee80211_scan_ies *ies, 874 int n_channels) 875 { 876 return ((n_ssids <= PROBE_OPTION_MAX) && 877 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 878 (ies->common_ie_len + 879 ies->len[NL80211_BAND_2GHZ] + 880 ies->len[NL80211_BAND_5GHZ] <= 881 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 882 } 883 884 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 885 struct ieee80211_vif *vif) 886 { 887 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 888 bool low_latency; 889 890 if (iwl_mvm_is_cdb_supported(mvm)) 891 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 892 else 893 low_latency = iwl_mvm_low_latency(mvm); 894 895 /* We can only use EBS if: 896 * 1. the feature is supported; 897 * 2. the last EBS was successful; 898 * 3. if only single scan, the single scan EBS API is supported; 899 * 4. it's not a p2p find operation. 900 * 5. we are not in low latency mode, 901 * or if fragmented ebs is supported by the FW 902 */ 903 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 904 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 905 vif->type != NL80211_IFTYPE_P2P_DEVICE && 906 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 907 } 908 909 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 910 { 911 return params->n_scan_plans == 1 && 912 params->scan_plans[0].iterations == 1; 913 } 914 915 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 916 { 917 return (type == IWL_SCAN_TYPE_FRAGMENTED || 918 type == IWL_SCAN_TYPE_FAST_BALANCE); 919 } 920 921 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 922 struct iwl_mvm_scan_params *params, 923 struct ieee80211_vif *vif) 924 { 925 int flags = 0; 926 927 if (params->n_ssids == 0) 928 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 929 930 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 931 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 932 933 if (iwl_mvm_is_scan_fragmented(params->type)) 934 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 935 936 if (iwl_mvm_rrm_scan_needed(mvm) && 937 fw_has_capa(&mvm->fw->ucode_capa, 938 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 939 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 940 941 if (params->pass_all) 942 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 943 else 944 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 945 946 #ifdef CONFIG_IWLWIFI_DEBUGFS 947 if (mvm->scan_iter_notif_enabled) 948 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 949 #endif 950 951 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 952 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 953 954 if (iwl_mvm_is_regular_scan(params) && 955 vif->type != NL80211_IFTYPE_P2P_DEVICE && 956 !iwl_mvm_is_scan_fragmented(params->type)) 957 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 958 959 return flags; 960 } 961 962 static void 963 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 964 struct iwl_scan_probe_req *src_p_req) 965 { 966 int i; 967 968 p_req->mac_header = src_p_req->mac_header; 969 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 970 p_req->band_data[i] = src_p_req->band_data[i]; 971 p_req->common_data = src_p_req->common_data; 972 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 973 } 974 975 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 976 struct iwl_mvm_scan_params *params) 977 { 978 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 979 struct iwl_scan_probe_req_v1 *preq = 980 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 981 mvm->fw->ucode_capa.n_scan_channels); 982 u32 ssid_bitmap = 0; 983 int i; 984 985 lockdep_assert_held(&mvm->mutex); 986 987 memset(cmd, 0, ksize(cmd)); 988 989 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 990 return -EINVAL; 991 992 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 993 994 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 995 cmd->iter_num = cpu_to_le32(1); 996 cmd->n_channels = (u8)params->n_channels; 997 998 cmd->delay = cpu_to_le32(params->delay); 999 1000 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 1001 vif)); 1002 1003 cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); 1004 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 1005 MAC_FILTER_IN_BEACON); 1006 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 1007 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 1008 1009 /* this API uses bits 1-20 instead of 0-19 */ 1010 ssid_bitmap <<= 1; 1011 1012 for (i = 0; i < params->n_scan_plans; i++) { 1013 struct cfg80211_sched_scan_plan *scan_plan = 1014 ¶ms->scan_plans[i]; 1015 1016 cmd->schedule[i].delay = 1017 cpu_to_le16(scan_plan->interval); 1018 cmd->schedule[i].iterations = scan_plan->iterations; 1019 cmd->schedule[i].full_scan_mul = 1; 1020 } 1021 1022 /* 1023 * If the number of iterations of the last scan plan is set to 1024 * zero, it should run infinitely. However, this is not always the case. 1025 * For example, when regular scan is requested the driver sets one scan 1026 * plan with one iteration. 1027 */ 1028 if (!cmd->schedule[i - 1].iterations) 1029 cmd->schedule[i - 1].iterations = 0xff; 1030 1031 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1032 cmd->channel_opt[0].flags = 1033 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1034 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1035 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1036 cmd->channel_opt[0].non_ebs_ratio = 1037 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 1038 cmd->channel_opt[1].flags = 1039 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1040 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1041 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1042 cmd->channel_opt[1].non_ebs_ratio = 1043 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1044 } 1045 1046 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1047 params->n_channels, ssid_bitmap, cmd); 1048 1049 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1050 1051 return 0; 1052 } 1053 1054 static int rate_to_scan_rate_flag(unsigned int rate) 1055 { 1056 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1057 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1058 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1059 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1060 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1061 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1062 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1063 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1064 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1065 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1066 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1067 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1068 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1069 }; 1070 1071 return rate_to_scan_rate[rate]; 1072 } 1073 1074 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1075 { 1076 struct ieee80211_supported_band *band; 1077 unsigned int rates = 0; 1078 int i; 1079 1080 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1081 for (i = 0; i < band->n_bitrates; i++) 1082 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1083 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1084 for (i = 0; i < band->n_bitrates; i++) 1085 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1086 1087 /* Set both basic rates and supported rates */ 1088 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1089 1090 return cpu_to_le32(rates); 1091 } 1092 1093 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1094 struct iwl_scan_dwell *dwell) 1095 { 1096 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1097 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1098 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1099 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1100 } 1101 1102 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1103 u32 max_channels) 1104 { 1105 struct ieee80211_supported_band *band; 1106 int i, j = 0; 1107 1108 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1109 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1110 channels[j] = band->channels[i].hw_value; 1111 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1112 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1113 channels[j] = band->channels[i].hw_value; 1114 } 1115 1116 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1117 u32 flags, u8 channel_flags, 1118 u32 max_channels) 1119 { 1120 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1121 struct iwl_scan_config_v1 *cfg = config; 1122 1123 cfg->flags = cpu_to_le32(flags); 1124 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1125 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1126 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1127 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1128 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1129 1130 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1131 1132 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1133 1134 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1135 cfg->channel_flags = channel_flags; 1136 1137 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1138 } 1139 1140 static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config, 1141 u32 flags, u8 channel_flags, 1142 u32 max_channels) 1143 { 1144 struct iwl_scan_config *cfg = config; 1145 1146 cfg->flags = cpu_to_le32(flags); 1147 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1148 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1149 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1150 1151 if (iwl_mvm_is_cdb_supported(mvm)) { 1152 enum iwl_mvm_scan_type lb_type, hb_type; 1153 1154 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1155 NL80211_BAND_2GHZ); 1156 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1157 NL80211_BAND_5GHZ); 1158 1159 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1160 cpu_to_le32(scan_timing[lb_type].max_out_time); 1161 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1162 cpu_to_le32(scan_timing[lb_type].suspend_time); 1163 1164 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1165 cpu_to_le32(scan_timing[hb_type].max_out_time); 1166 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1167 cpu_to_le32(scan_timing[hb_type].suspend_time); 1168 } else { 1169 enum iwl_mvm_scan_type type = 1170 iwl_mvm_get_scan_type(mvm, NULL); 1171 1172 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1173 cpu_to_le32(scan_timing[type].max_out_time); 1174 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1175 cpu_to_le32(scan_timing[type].suspend_time); 1176 } 1177 1178 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1179 1180 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1181 1182 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1183 cfg->channel_flags = channel_flags; 1184 1185 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1186 } 1187 1188 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1189 { 1190 void *cfg; 1191 int ret, cmd_size; 1192 struct iwl_host_cmd cmd = { 1193 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1194 }; 1195 enum iwl_mvm_scan_type type; 1196 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1197 int num_channels = 1198 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1199 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1200 u32 flags; 1201 u8 channel_flags; 1202 1203 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1204 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1205 1206 if (iwl_mvm_is_cdb_supported(mvm)) { 1207 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1208 NL80211_BAND_2GHZ); 1209 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1210 NL80211_BAND_5GHZ); 1211 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1212 return 0; 1213 } else { 1214 type = iwl_mvm_get_scan_type(mvm, NULL); 1215 if (type == mvm->scan_type) 1216 return 0; 1217 } 1218 1219 if (iwl_mvm_cdb_scan_api(mvm)) 1220 cmd_size = sizeof(struct iwl_scan_config); 1221 else 1222 cmd_size = sizeof(struct iwl_scan_config_v1); 1223 cmd_size += num_channels; 1224 1225 cfg = kzalloc(cmd_size, GFP_KERNEL); 1226 if (!cfg) 1227 return -ENOMEM; 1228 1229 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1230 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1231 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1232 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1233 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1234 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1235 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1236 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1237 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1238 SCAN_CONFIG_N_CHANNELS(num_channels) | 1239 (iwl_mvm_is_scan_fragmented(type) ? 1240 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1241 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1242 1243 channel_flags = IWL_CHANNEL_FLAG_EBS | 1244 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1245 IWL_CHANNEL_FLAG_EBS_ADD | 1246 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1247 1248 /* 1249 * Check for fragmented scan on LMAC2 - high band. 1250 * LMAC1 - low band is checked above. 1251 */ 1252 if (iwl_mvm_cdb_scan_api(mvm)) { 1253 if (iwl_mvm_is_cdb_supported(mvm)) 1254 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1255 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1256 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1257 iwl_mvm_fill_scan_config(mvm, cfg, flags, channel_flags, 1258 num_channels); 1259 } else { 1260 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1261 num_channels); 1262 } 1263 1264 cmd.data[0] = cfg; 1265 cmd.len[0] = cmd_size; 1266 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1267 1268 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1269 1270 ret = iwl_mvm_send_cmd(mvm, &cmd); 1271 if (!ret) { 1272 mvm->scan_type = type; 1273 mvm->hb_scan_type = hb_type; 1274 } 1275 1276 kfree(cfg); 1277 return ret; 1278 } 1279 1280 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1281 { 1282 int i; 1283 1284 for (i = 0; i < mvm->max_scans; i++) 1285 if (mvm->scan_uid_status[i] == status) 1286 return i; 1287 1288 return -ENOENT; 1289 } 1290 1291 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1292 struct iwl_scan_req_umac *cmd, 1293 struct iwl_mvm_scan_params *params) 1294 { 1295 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1296 u8 active_dwell, passive_dwell; 1297 1298 timing = &scan_timing[params->type]; 1299 active_dwell = params->measurement_dwell ? 1300 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE; 1301 passive_dwell = params->measurement_dwell ? 1302 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE; 1303 1304 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1305 cmd->v7.adwell_default_n_aps_social = 1306 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1307 cmd->v7.adwell_default_n_aps = 1308 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1309 1310 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1311 cmd->v9.adwell_default_hb_n_aps = 1312 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1313 1314 /* if custom max budget was configured with debugfs */ 1315 if (IWL_MVM_ADWELL_MAX_BUDGET) 1316 cmd->v7.adwell_max_budget = 1317 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1318 else if (params->ssids && params->ssids[0].ssid_len) 1319 cmd->v7.adwell_max_budget = 1320 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1321 else 1322 cmd->v7.adwell_max_budget = 1323 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1324 1325 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1326 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1327 cpu_to_le32(timing->max_out_time); 1328 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1329 cpu_to_le32(timing->suspend_time); 1330 1331 if (iwl_mvm_is_cdb_supported(mvm)) { 1332 hb_timing = &scan_timing[params->hb_type]; 1333 1334 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1335 cpu_to_le32(hb_timing->max_out_time); 1336 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1337 cpu_to_le32(hb_timing->suspend_time); 1338 } 1339 1340 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1341 cmd->v7.active_dwell = active_dwell; 1342 cmd->v7.passive_dwell = passive_dwell; 1343 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1344 } else { 1345 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1346 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1347 if (iwl_mvm_is_cdb_supported(mvm)) { 1348 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1349 active_dwell; 1350 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1351 passive_dwell; 1352 } 1353 } 1354 } else { 1355 cmd->v1.extended_dwell = params->measurement_dwell ? 1356 params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED; 1357 cmd->v1.active_dwell = active_dwell; 1358 cmd->v1.passive_dwell = passive_dwell; 1359 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1360 1361 if (iwl_mvm_is_cdb_supported(mvm)) { 1362 hb_timing = &scan_timing[params->hb_type]; 1363 1364 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1365 cpu_to_le32(hb_timing->max_out_time); 1366 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1367 cpu_to_le32(hb_timing->suspend_time); 1368 } 1369 1370 if (iwl_mvm_cdb_scan_api(mvm)) { 1371 cmd->v6.scan_priority = 1372 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1373 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1374 cpu_to_le32(timing->max_out_time); 1375 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1376 cpu_to_le32(timing->suspend_time); 1377 } else { 1378 cmd->v1.scan_priority = 1379 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1380 cmd->v1.max_out_time = 1381 cpu_to_le32(timing->max_out_time); 1382 cmd->v1.suspend_time = 1383 cpu_to_le32(timing->suspend_time); 1384 } 1385 } 1386 1387 if (iwl_mvm_is_regular_scan(params)) 1388 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1389 else 1390 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1391 } 1392 1393 static void 1394 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1395 struct ieee80211_channel **channels, 1396 int n_channels, u32 ssid_bitmap, 1397 struct iwl_scan_channel_cfg_umac *channel_cfg) 1398 { 1399 int i; 1400 1401 for (i = 0; i < n_channels; i++) { 1402 channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); 1403 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1404 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1405 channel_cfg[i].v2.band = 1406 channels[i]->hw_value <= IWL_SCAN_LAST_2_4_CHN ? 1407 IWL_SCAN_BAND_2_4 : IWL_SCAN_BAND_5_2; 1408 channel_cfg[i].v2.iter_count = 1; 1409 channel_cfg[i].v2.iter_interval = 0; 1410 } else { 1411 channel_cfg[i].v1.iter_count = 1; 1412 channel_cfg[i].v1.iter_interval = 0; 1413 } 1414 } 1415 } 1416 1417 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1418 struct iwl_mvm_scan_params *params, 1419 struct ieee80211_vif *vif) 1420 { 1421 u16 flags = 0; 1422 1423 if (params->n_ssids == 0) 1424 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1425 1426 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1427 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1428 1429 if (iwl_mvm_is_scan_fragmented(params->type)) 1430 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1431 1432 if (iwl_mvm_is_cdb_supported(mvm) && 1433 iwl_mvm_is_scan_fragmented(params->hb_type)) 1434 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1435 1436 if (iwl_mvm_rrm_scan_needed(mvm) && 1437 fw_has_capa(&mvm->fw->ucode_capa, 1438 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1439 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1440 1441 if (params->pass_all) 1442 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1443 else 1444 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1445 1446 if (!iwl_mvm_is_regular_scan(params)) 1447 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1448 1449 if (params->measurement_dwell) 1450 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1451 1452 #ifdef CONFIG_IWLWIFI_DEBUGFS 1453 if (mvm->scan_iter_notif_enabled) 1454 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1455 #endif 1456 1457 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1458 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1459 1460 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE && 1461 vif->type != NL80211_IFTYPE_P2P_DEVICE) 1462 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1463 1464 /* 1465 * Extended dwell is relevant only for low band to start with, as it is 1466 * being used for social channles only (1, 6, 11), so we can check 1467 * only scan type on low band also for CDB. 1468 */ 1469 if (iwl_mvm_is_regular_scan(params) && 1470 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1471 !iwl_mvm_is_scan_fragmented(params->type) && 1472 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1473 !iwl_mvm_is_oce_supported(mvm)) 1474 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1475 1476 if (iwl_mvm_is_oce_supported(mvm)) { 1477 if ((params->flags & 1478 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1479 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1480 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1481 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1482 * the same bit, we need to make sure that we use this bit here 1483 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1484 * used. */ 1485 if ((params->flags & 1486 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1487 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1488 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1489 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1490 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1491 } 1492 1493 return flags; 1494 } 1495 1496 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1497 struct iwl_mvm_scan_params *params, 1498 int type) 1499 { 1500 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 1501 struct iwl_scan_umac_chan_param *chan_param; 1502 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 1503 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 1504 mvm->fw->ucode_capa.n_scan_channels; 1505 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 1506 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 1507 struct iwl_scan_req_umac_tail_v1 *tail_v1; 1508 struct iwl_ssid_ie *direct_scan; 1509 int uid, i; 1510 u32 ssid_bitmap = 0; 1511 u8 channel_flags = 0; 1512 u16 gen_flags; 1513 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1514 1515 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 1516 1517 lockdep_assert_held(&mvm->mutex); 1518 1519 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 1520 return -EINVAL; 1521 1522 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 1523 if (uid < 0) 1524 return uid; 1525 1526 memset(cmd, 0, ksize(cmd)); 1527 1528 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 1529 1530 mvm->scan_uid_status[uid] = type; 1531 1532 cmd->uid = cpu_to_le32(uid); 1533 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 1534 cmd->general_flags = cpu_to_le16(gen_flags); 1535 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1536 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 1537 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 1538 IWL_SCAN_NUM_OF_FRAGS; 1539 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 1540 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 1541 IWL_SCAN_NUM_OF_FRAGS; 1542 1543 cmd->v8.general_flags2 = 1544 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 1545 } 1546 1547 cmd->scan_start_mac_id = scan_vif->id; 1548 1549 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1550 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 1551 1552 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1553 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 1554 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1555 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1556 1557 /* set fragmented ebs for fragmented scan on HB channels */ 1558 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 1559 if (gen_flags & 1560 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 1561 (!iwl_mvm_is_cdb_supported(mvm) && 1562 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 1563 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1564 } 1565 } 1566 1567 chan_param->flags = channel_flags; 1568 chan_param->count = params->n_channels; 1569 1570 for (i = 0; i < params->n_scan_plans; i++) { 1571 struct cfg80211_sched_scan_plan *scan_plan = 1572 ¶ms->scan_plans[i]; 1573 1574 tail_v2->schedule[i].iter_count = scan_plan->iterations; 1575 tail_v2->schedule[i].interval = 1576 cpu_to_le16(scan_plan->interval); 1577 } 1578 1579 /* 1580 * If the number of iterations of the last scan plan is set to 1581 * zero, it should run infinitely. However, this is not always the case. 1582 * For example, when regular scan is requested the driver sets one scan 1583 * plan with one iteration. 1584 */ 1585 if (!tail_v2->schedule[i - 1].iter_count) 1586 tail_v2->schedule[i - 1].iter_count = 0xff; 1587 1588 tail_v2->delay = cpu_to_le16(params->delay); 1589 1590 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1591 tail_v2->preq = params->preq; 1592 direct_scan = tail_v2->direct_scan; 1593 } else { 1594 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 1595 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 1596 ¶ms->preq); 1597 direct_scan = tail_v1->direct_scan; 1598 } 1599 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 1600 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 1601 params->n_channels, ssid_bitmap, 1602 cmd_data); 1603 return 0; 1604 } 1605 1606 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 1607 { 1608 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 1609 } 1610 1611 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 1612 { 1613 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 1614 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 1615 1616 /* This looks a bit arbitrary, but the idea is that if we run 1617 * out of possible simultaneous scans and the userspace is 1618 * trying to run a scan type that is already running, we 1619 * return -EBUSY. But if the userspace wants to start a 1620 * different type of scan, we stop the opposite type to make 1621 * space for the new request. The reason is backwards 1622 * compatibility with old wpa_supplicant that wouldn't stop a 1623 * scheduled scan before starting a normal scan. 1624 */ 1625 1626 /* FW supports only a single periodic scan */ 1627 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 1628 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 1629 return -EBUSY; 1630 1631 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 1632 return 0; 1633 1634 /* Use a switch, even though this is a bitmask, so that more 1635 * than one bits set will fall in default and we will warn. 1636 */ 1637 switch (type) { 1638 case IWL_MVM_SCAN_REGULAR: 1639 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 1640 return -EBUSY; 1641 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 1642 case IWL_MVM_SCAN_SCHED: 1643 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 1644 return -EBUSY; 1645 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 1646 case IWL_MVM_SCAN_NETDETECT: 1647 /* For non-unified images, there's no need to stop 1648 * anything for net-detect since the firmware is 1649 * restarted anyway. This way, any sched scans that 1650 * were running will be restarted when we resume. 1651 */ 1652 if (!unified_image) 1653 return 0; 1654 1655 /* If this is a unified image and we ran out of scans, 1656 * we need to stop something. Prefer stopping regular 1657 * scans, because the results are useless at this 1658 * point, and we should be able to keep running 1659 * another scheduled scan while suspended. 1660 */ 1661 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 1662 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 1663 true); 1664 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 1665 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 1666 true); 1667 /* Something is wrong if no scan was running but we 1668 * ran out of scans. 1669 */ 1670 /* fall through */ 1671 default: 1672 WARN_ON(1); 1673 break; 1674 } 1675 1676 return -EIO; 1677 } 1678 1679 #define SCAN_TIMEOUT 20000 1680 1681 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 1682 { 1683 struct delayed_work *delayed_work = to_delayed_work(work); 1684 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 1685 scan_timeout_dwork); 1686 1687 IWL_ERR(mvm, "regular scan timed out\n"); 1688 1689 iwl_force_nmi(mvm->trans); 1690 } 1691 1692 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 1693 struct iwl_mvm_scan_params *params, 1694 struct ieee80211_vif *vif) 1695 { 1696 if (iwl_mvm_is_cdb_supported(mvm)) { 1697 params->type = 1698 iwl_mvm_get_scan_type_band(mvm, vif, 1699 NL80211_BAND_2GHZ); 1700 params->hb_type = 1701 iwl_mvm_get_scan_type_band(mvm, vif, 1702 NL80211_BAND_5GHZ); 1703 } else { 1704 params->type = iwl_mvm_get_scan_type(mvm, vif); 1705 } 1706 } 1707 1708 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1709 struct cfg80211_scan_request *req, 1710 struct ieee80211_scan_ies *ies) 1711 { 1712 struct iwl_host_cmd hcmd = { 1713 .len = { iwl_mvm_scan_size(mvm), }, 1714 .data = { mvm->scan_cmd, }, 1715 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 1716 }; 1717 struct iwl_mvm_scan_params params = {}; 1718 int ret; 1719 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 1720 1721 lockdep_assert_held(&mvm->mutex); 1722 1723 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 1724 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 1725 return -EBUSY; 1726 } 1727 1728 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 1729 if (ret) 1730 return ret; 1731 1732 /* we should have failed registration if scan_cmd was NULL */ 1733 if (WARN_ON(!mvm->scan_cmd)) 1734 return -ENOMEM; 1735 1736 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 1737 return -ENOBUFS; 1738 1739 params.n_ssids = req->n_ssids; 1740 params.flags = req->flags; 1741 params.n_channels = req->n_channels; 1742 params.delay = 0; 1743 params.ssids = req->ssids; 1744 params.channels = req->channels; 1745 params.mac_addr = req->mac_addr; 1746 params.mac_addr_mask = req->mac_addr_mask; 1747 params.no_cck = req->no_cck; 1748 params.pass_all = true; 1749 params.n_match_sets = 0; 1750 params.match_sets = NULL; 1751 1752 params.scan_plans = &scan_plan; 1753 params.n_scan_plans = 1; 1754 1755 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 1756 1757 ret = iwl_mvm_get_measurement_dwell(mvm, req, ¶ms); 1758 if (ret < 0) 1759 return ret; 1760 1761 params.measurement_dwell = ret; 1762 1763 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 1764 1765 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1766 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 1767 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, 1768 IWL_MVM_SCAN_REGULAR); 1769 } else { 1770 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; 1771 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); 1772 } 1773 1774 if (ret) 1775 return ret; 1776 1777 iwl_mvm_pause_tcm(mvm, false); 1778 1779 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1780 if (ret) { 1781 /* If the scan failed, it usually means that the FW was unable 1782 * to allocate the time events. Warn on it, but maybe we 1783 * should try to send the command again with different params. 1784 */ 1785 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 1786 iwl_mvm_resume_tcm(mvm); 1787 return ret; 1788 } 1789 1790 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 1791 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 1792 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 1793 1794 schedule_delayed_work(&mvm->scan_timeout_dwork, 1795 msecs_to_jiffies(SCAN_TIMEOUT)); 1796 1797 return 0; 1798 } 1799 1800 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 1801 struct ieee80211_vif *vif, 1802 struct cfg80211_sched_scan_request *req, 1803 struct ieee80211_scan_ies *ies, 1804 int type) 1805 { 1806 struct iwl_host_cmd hcmd = { 1807 .len = { iwl_mvm_scan_size(mvm), }, 1808 .data = { mvm->scan_cmd, }, 1809 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 1810 }; 1811 struct iwl_mvm_scan_params params = {}; 1812 int ret; 1813 1814 lockdep_assert_held(&mvm->mutex); 1815 1816 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 1817 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 1818 return -EBUSY; 1819 } 1820 1821 ret = iwl_mvm_check_running_scans(mvm, type); 1822 if (ret) 1823 return ret; 1824 1825 /* we should have failed registration if scan_cmd was NULL */ 1826 if (WARN_ON(!mvm->scan_cmd)) 1827 return -ENOMEM; 1828 1829 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 1830 return -ENOBUFS; 1831 1832 params.n_ssids = req->n_ssids; 1833 params.flags = req->flags; 1834 params.n_channels = req->n_channels; 1835 params.ssids = req->ssids; 1836 params.channels = req->channels; 1837 params.mac_addr = req->mac_addr; 1838 params.mac_addr_mask = req->mac_addr_mask; 1839 params.no_cck = false; 1840 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 1841 params.n_match_sets = req->n_match_sets; 1842 params.match_sets = req->match_sets; 1843 if (!req->n_scan_plans) 1844 return -EINVAL; 1845 1846 params.n_scan_plans = req->n_scan_plans; 1847 params.scan_plans = req->scan_plans; 1848 1849 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 1850 1851 /* In theory, LMAC scans can handle a 32-bit delay, but since 1852 * waiting for over 18 hours to start the scan is a bit silly 1853 * and to keep it aligned with UMAC scans (which only support 1854 * 16-bit delays), trim it down to 16-bits. 1855 */ 1856 if (req->delay > U16_MAX) { 1857 IWL_DEBUG_SCAN(mvm, 1858 "delay value is > 16-bits, set to max possible\n"); 1859 params.delay = U16_MAX; 1860 } else { 1861 params.delay = req->delay; 1862 } 1863 1864 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 1865 if (ret) 1866 return ret; 1867 1868 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 1869 1870 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1871 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 1872 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, type); 1873 } else { 1874 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; 1875 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); 1876 } 1877 1878 if (ret) 1879 return ret; 1880 1881 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1882 if (!ret) { 1883 IWL_DEBUG_SCAN(mvm, 1884 "Sched scan request was sent successfully\n"); 1885 mvm->scan_status |= type; 1886 } else { 1887 /* If the scan failed, it usually means that the FW was unable 1888 * to allocate the time events. Warn on it, but maybe we 1889 * should try to send the command again with different params. 1890 */ 1891 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 1892 } 1893 1894 return ret; 1895 } 1896 1897 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 1898 struct iwl_rx_cmd_buffer *rxb) 1899 { 1900 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1901 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 1902 u32 uid = __le32_to_cpu(notif->uid); 1903 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 1904 1905 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 1906 return; 1907 1908 /* if the scan is already stopping, we don't need to notify mac80211 */ 1909 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 1910 struct cfg80211_scan_info info = { 1911 .aborted = aborted, 1912 .scan_start_tsf = mvm->scan_start, 1913 }; 1914 1915 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 1916 ieee80211_scan_completed(mvm->hw, &info); 1917 mvm->scan_vif = NULL; 1918 cancel_delayed_work(&mvm->scan_timeout_dwork); 1919 iwl_mvm_resume_tcm(mvm); 1920 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 1921 ieee80211_sched_scan_stopped(mvm->hw); 1922 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 1923 } 1924 1925 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 1926 IWL_DEBUG_SCAN(mvm, 1927 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 1928 uid, mvm->scan_uid_status[uid], 1929 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 1930 "completed" : "aborted", 1931 iwl_mvm_ebs_status_str(notif->ebs_status)); 1932 IWL_DEBUG_SCAN(mvm, 1933 "Last line %d, Last iteration %d, Time from last iteration %d\n", 1934 notif->last_schedule, notif->last_iter, 1935 __le32_to_cpu(notif->time_from_last_iter)); 1936 1937 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 1938 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 1939 mvm->last_ebs_successful = false; 1940 1941 mvm->scan_uid_status[uid] = 0; 1942 } 1943 1944 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 1945 struct iwl_rx_cmd_buffer *rxb) 1946 { 1947 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1948 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 1949 1950 mvm->scan_start = le64_to_cpu(notif->start_tsf); 1951 1952 IWL_DEBUG_SCAN(mvm, 1953 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 1954 notif->status, notif->scanned_channels); 1955 1956 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 1957 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 1958 ieee80211_sched_scan_results(mvm->hw); 1959 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 1960 } 1961 1962 IWL_DEBUG_SCAN(mvm, 1963 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 1964 mvm->scan_start); 1965 } 1966 1967 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 1968 { 1969 struct iwl_umac_scan_abort cmd = {}; 1970 int uid, ret; 1971 1972 lockdep_assert_held(&mvm->mutex); 1973 1974 /* We should always get a valid index here, because we already 1975 * checked that this type of scan was running in the generic 1976 * code. 1977 */ 1978 uid = iwl_mvm_scan_uid_by_status(mvm, type); 1979 if (WARN_ON_ONCE(uid < 0)) 1980 return uid; 1981 1982 cmd.uid = cpu_to_le32(uid); 1983 1984 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 1985 1986 ret = iwl_mvm_send_cmd_pdu(mvm, 1987 iwl_cmd_id(SCAN_ABORT_UMAC, 1988 IWL_ALWAYS_LONG_GROUP, 0), 1989 0, sizeof(cmd), &cmd); 1990 if (!ret) 1991 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 1992 1993 return ret; 1994 } 1995 1996 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 1997 { 1998 struct iwl_notification_wait wait_scan_done; 1999 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2000 SCAN_OFFLOAD_COMPLETE, }; 2001 int ret; 2002 2003 lockdep_assert_held(&mvm->mutex); 2004 2005 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2006 scan_done_notif, 2007 ARRAY_SIZE(scan_done_notif), 2008 NULL, NULL); 2009 2010 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2011 2012 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2013 ret = iwl_mvm_umac_scan_abort(mvm, type); 2014 else 2015 ret = iwl_mvm_lmac_scan_abort(mvm); 2016 2017 if (ret) { 2018 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2019 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2020 return ret; 2021 } 2022 2023 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2024 1 * HZ); 2025 } 2026 2027 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2028 { 2029 int base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2030 int tail_size; 2031 2032 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2033 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2034 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2035 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2036 else if (iwl_mvm_cdb_scan_api(mvm)) 2037 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2038 2039 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2040 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2041 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2042 else 2043 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2044 2045 return base_size + 2046 sizeof(struct iwl_scan_channel_cfg_umac) * 2047 mvm->fw->ucode_capa.n_scan_channels + 2048 tail_size; 2049 } 2050 return sizeof(struct iwl_scan_req_lmac) + 2051 sizeof(struct iwl_scan_channel_cfg_lmac) * 2052 mvm->fw->ucode_capa.n_scan_channels + 2053 sizeof(struct iwl_scan_probe_req_v1); 2054 } 2055 2056 /* 2057 * This function is used in nic restart flow, to inform mac80211 about scans 2058 * that was aborted by restart flow or by an assert. 2059 */ 2060 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2061 { 2062 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2063 int uid, i; 2064 2065 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2066 if (uid >= 0) { 2067 struct cfg80211_scan_info info = { 2068 .aborted = true, 2069 }; 2070 2071 ieee80211_scan_completed(mvm->hw, &info); 2072 mvm->scan_uid_status[uid] = 0; 2073 } 2074 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2075 if (uid >= 0 && !mvm->fw_restart) { 2076 ieee80211_sched_scan_stopped(mvm->hw); 2077 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2078 mvm->scan_uid_status[uid] = 0; 2079 } 2080 2081 /* We shouldn't have any UIDs still set. Loop over all the 2082 * UIDs to make sure there's nothing left there and warn if 2083 * any is found. 2084 */ 2085 for (i = 0; i < mvm->max_scans; i++) { 2086 if (WARN_ONCE(mvm->scan_uid_status[i], 2087 "UMAC scan UID %d status was not cleaned\n", 2088 i)) 2089 mvm->scan_uid_status[i] = 0; 2090 } 2091 } else { 2092 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2093 struct cfg80211_scan_info info = { 2094 .aborted = true, 2095 }; 2096 2097 ieee80211_scan_completed(mvm->hw, &info); 2098 } 2099 2100 /* Sched scan will be restarted by mac80211 in 2101 * restart_hw, so do not report if FW is about to be 2102 * restarted. 2103 */ 2104 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2105 !mvm->fw_restart) { 2106 ieee80211_sched_scan_stopped(mvm->hw); 2107 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2108 } 2109 } 2110 } 2111 2112 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2113 { 2114 int ret; 2115 2116 if (!(mvm->scan_status & type)) 2117 return 0; 2118 2119 if (iwl_mvm_is_radio_killed(mvm)) { 2120 ret = 0; 2121 goto out; 2122 } 2123 2124 ret = iwl_mvm_scan_stop_wait(mvm, type); 2125 if (!ret) 2126 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2127 out: 2128 /* Clear the scan status so the next scan requests will 2129 * succeed and mark the scan as stopping, so that the Rx 2130 * handler doesn't do anything, as the scan was stopped from 2131 * above. 2132 */ 2133 mvm->scan_status &= ~type; 2134 2135 if (type == IWL_MVM_SCAN_REGULAR) { 2136 cancel_delayed_work(&mvm->scan_timeout_dwork); 2137 if (notify) { 2138 struct cfg80211_scan_info info = { 2139 .aborted = true, 2140 }; 2141 2142 ieee80211_scan_completed(mvm->hw, &info); 2143 } 2144 } else if (notify) { 2145 ieee80211_sched_scan_stopped(mvm->hw); 2146 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2147 } 2148 2149 return ret; 2150 } 2151