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 /* number of scan channels */ 93 #define IWL_SCAN_NUM_CHANNELS 112 94 /* adaptive dwell number of APs override mask for p2p friendly GO */ 95 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) 96 /* adaptive dwell number of APs override mask for social channels */ 97 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) 98 /* adaptive dwell number of APs override for p2p friendly GO channels */ 99 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 100 /* adaptive dwell number of APs override for social channels */ 101 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 102 103 struct iwl_mvm_scan_timing_params { 104 u32 suspend_time; 105 u32 max_out_time; 106 }; 107 108 static struct iwl_mvm_scan_timing_params scan_timing[] = { 109 [IWL_SCAN_TYPE_UNASSOC] = { 110 .suspend_time = 0, 111 .max_out_time = 0, 112 }, 113 [IWL_SCAN_TYPE_WILD] = { 114 .suspend_time = 30, 115 .max_out_time = 120, 116 }, 117 [IWL_SCAN_TYPE_MILD] = { 118 .suspend_time = 120, 119 .max_out_time = 120, 120 }, 121 [IWL_SCAN_TYPE_FRAGMENTED] = { 122 .suspend_time = 95, 123 .max_out_time = 44, 124 }, 125 [IWL_SCAN_TYPE_FAST_BALANCE] = { 126 .suspend_time = 30, 127 .max_out_time = 37, 128 }, 129 }; 130 131 struct iwl_mvm_scan_params { 132 /* For CDB this is low band scan type, for non-CDB - type. */ 133 enum iwl_mvm_scan_type type; 134 enum iwl_mvm_scan_type hb_type; 135 u32 n_channels; 136 u16 delay; 137 int n_ssids; 138 struct cfg80211_ssid *ssids; 139 struct ieee80211_channel **channels; 140 u32 flags; 141 u8 *mac_addr; 142 u8 *mac_addr_mask; 143 bool no_cck; 144 bool pass_all; 145 int n_match_sets; 146 struct iwl_scan_probe_req preq; 147 struct cfg80211_match_set *match_sets; 148 int n_scan_plans; 149 struct cfg80211_sched_scan_plan *scan_plans; 150 bool iter_notif; 151 }; 152 153 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) 154 { 155 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 156 157 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 158 return (void *)&cmd->v8.data; 159 160 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 161 return (void *)&cmd->v7.data; 162 163 if (iwl_mvm_cdb_scan_api(mvm)) 164 return (void *)&cmd->v6.data; 165 166 return (void *)&cmd->v1.data; 167 } 168 169 static inline struct iwl_scan_umac_chan_param * 170 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) 171 { 172 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 173 174 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 175 return &cmd->v8.channel; 176 177 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 178 return &cmd->v7.channel; 179 180 if (iwl_mvm_cdb_scan_api(mvm)) 181 return &cmd->v6.channel; 182 183 return &cmd->v1.channel; 184 } 185 186 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) 187 { 188 if (mvm->scan_rx_ant != ANT_NONE) 189 return mvm->scan_rx_ant; 190 return iwl_mvm_get_valid_rx_ant(mvm); 191 } 192 193 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) 194 { 195 u16 rx_chain; 196 u8 rx_ant; 197 198 rx_ant = iwl_mvm_scan_rx_ant(mvm); 199 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; 200 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; 201 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; 202 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; 203 return cpu_to_le16(rx_chain); 204 } 205 206 static inline __le32 207 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, 208 bool no_cck) 209 { 210 u32 tx_ant; 211 212 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); 213 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; 214 215 if (band == NL80211_BAND_2GHZ && !no_cck) 216 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | 217 tx_ant); 218 else 219 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); 220 } 221 222 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, 223 struct ieee80211_vif *vif) 224 { 225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 226 int *global_cnt = data; 227 228 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && 229 mvmvif->phy_ctxt->id < NUM_PHY_CTX) 230 *global_cnt += 1; 231 } 232 233 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) 234 { 235 return mvm->tcm.result.global_load; 236 } 237 238 static enum iwl_mvm_traffic_load 239 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) 240 { 241 return mvm->tcm.result.band_load[band]; 242 } 243 244 struct iwl_is_dcm_with_go_iterator_data { 245 struct ieee80211_vif *current_vif; 246 bool is_dcm_with_p2p_go; 247 }; 248 249 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, 250 struct ieee80211_vif *vif) 251 { 252 struct iwl_is_dcm_with_go_iterator_data *data = _data; 253 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); 254 struct iwl_mvm_vif *curr_mvmvif = 255 iwl_mvm_vif_from_mac80211(data->current_vif); 256 257 /* exclude the given vif */ 258 if (vif == data->current_vif) 259 return; 260 261 if (vif->type == NL80211_IFTYPE_AP && vif->p2p && 262 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && 263 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) 264 data->is_dcm_with_p2p_go = true; 265 } 266 267 static enum 268 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 269 struct ieee80211_vif *vif, 270 enum iwl_mvm_traffic_load load, 271 bool low_latency) 272 { 273 int global_cnt = 0; 274 275 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 276 IEEE80211_IFACE_ITER_NORMAL, 277 iwl_mvm_scan_condition_iterator, 278 &global_cnt); 279 if (!global_cnt) 280 return IWL_SCAN_TYPE_UNASSOC; 281 282 if (fw_has_api(&mvm->fw->ucode_capa, 283 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { 284 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && 285 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) 286 return IWL_SCAN_TYPE_FRAGMENTED; 287 288 /* in case of DCM with GO where BSS DTIM interval < 220msec 289 * set all scan requests as fast-balance scan 290 * */ 291 if (vif && vif->type == NL80211_IFTYPE_STATION && 292 vif->bss_conf.dtim_period < 220) { 293 struct iwl_is_dcm_with_go_iterator_data data = { 294 .current_vif = vif, 295 .is_dcm_with_p2p_go = false, 296 }; 297 298 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 299 IEEE80211_IFACE_ITER_NORMAL, 300 iwl_mvm_is_dcm_with_go_iterator, 301 &data); 302 if (data.is_dcm_with_p2p_go) 303 return IWL_SCAN_TYPE_FAST_BALANCE; 304 } 305 } 306 307 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) 308 return IWL_SCAN_TYPE_MILD; 309 310 return IWL_SCAN_TYPE_WILD; 311 } 312 313 static enum 314 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, 315 struct ieee80211_vif *vif) 316 { 317 enum iwl_mvm_traffic_load load; 318 bool low_latency; 319 320 load = iwl_mvm_get_traffic_load(mvm); 321 low_latency = iwl_mvm_low_latency(mvm); 322 323 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 324 } 325 326 static enum 327 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, 328 struct ieee80211_vif *vif, 329 enum nl80211_band band) 330 { 331 enum iwl_mvm_traffic_load load; 332 bool low_latency; 333 334 load = iwl_mvm_get_traffic_load_band(mvm, band); 335 low_latency = iwl_mvm_low_latency_band(mvm, band); 336 337 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); 338 } 339 340 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) 341 { 342 /* require rrm scan whenever the fw supports it */ 343 return fw_has_capa(&mvm->fw->ucode_capa, 344 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); 345 } 346 347 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) 348 { 349 int max_probe_len; 350 351 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; 352 353 /* we create the 802.11 header and SSID element */ 354 max_probe_len -= 24 + 2; 355 356 /* DS parameter set element is added on 2.4GHZ band if required */ 357 if (iwl_mvm_rrm_scan_needed(mvm)) 358 max_probe_len -= 3; 359 360 return max_probe_len; 361 } 362 363 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) 364 { 365 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); 366 367 /* TODO: [BUG] This function should return the maximum allowed size of 368 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs 369 * in the same command. So the correct implementation of this function 370 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan 371 * command has only 512 bytes and it would leave us with about 240 372 * bytes for scan IEs, which is clearly not enough. So meanwhile 373 * we will report an incorrect value. This may result in a failure to 374 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac 375 * functions with -ENOBUFS, if a large enough probe will be provided. 376 */ 377 return max_ie_len; 378 } 379 380 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, 381 struct iwl_rx_cmd_buffer *rxb) 382 { 383 struct iwl_rx_packet *pkt = rxb_addr(rxb); 384 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; 385 386 IWL_DEBUG_SCAN(mvm, 387 "Scan offload iteration complete: status=0x%x scanned channels=%d\n", 388 notif->status, notif->scanned_channels); 389 390 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 391 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 392 ieee80211_sched_scan_results(mvm->hw); 393 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 394 } 395 } 396 397 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, 398 struct iwl_rx_cmd_buffer *rxb) 399 { 400 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); 401 ieee80211_sched_scan_results(mvm->hw); 402 } 403 404 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) 405 { 406 switch (status) { 407 case IWL_SCAN_EBS_SUCCESS: 408 return "successful"; 409 case IWL_SCAN_EBS_INACTIVE: 410 return "inactive"; 411 case IWL_SCAN_EBS_FAILED: 412 case IWL_SCAN_EBS_CHAN_NOT_FOUND: 413 default: 414 return "failed"; 415 } 416 } 417 418 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, 419 struct iwl_rx_cmd_buffer *rxb) 420 { 421 struct iwl_rx_packet *pkt = rxb_addr(rxb); 422 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; 423 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); 424 425 /* If this happens, the firmware has mistakenly sent an LMAC 426 * notification during UMAC scans -- warn and ignore it. 427 */ 428 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, 429 IWL_UCODE_TLV_CAPA_UMAC_SCAN))) 430 return; 431 432 /* scan status must be locked for proper checking */ 433 lockdep_assert_held(&mvm->mutex); 434 435 /* We first check if we were stopping a scan, in which case we 436 * just clear the stopping flag. Then we check if it was a 437 * firmware initiated stop, in which case we need to inform 438 * mac80211. 439 * Note that we can have a stopping and a running scan 440 * simultaneously, but we can't have two different types of 441 * scans stopping or running at the same time (since LMAC 442 * doesn't support it). 443 */ 444 445 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { 446 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); 447 448 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 449 aborted ? "aborted" : "completed", 450 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 451 IWL_DEBUG_SCAN(mvm, 452 "Last line %d, Last iteration %d, Time after last iteration %d\n", 453 scan_notif->last_schedule_line, 454 scan_notif->last_schedule_iteration, 455 __le32_to_cpu(scan_notif->time_after_last_iter)); 456 457 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; 458 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { 459 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", 460 aborted ? "aborted" : "completed", 461 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 462 463 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; 464 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { 465 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); 466 467 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", 468 aborted ? "aborted" : "completed", 469 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 470 IWL_DEBUG_SCAN(mvm, 471 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", 472 scan_notif->last_schedule_line, 473 scan_notif->last_schedule_iteration, 474 __le32_to_cpu(scan_notif->time_after_last_iter)); 475 476 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; 477 ieee80211_sched_scan_stopped(mvm->hw); 478 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 479 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 480 struct cfg80211_scan_info info = { 481 .aborted = aborted, 482 }; 483 484 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", 485 aborted ? "aborted" : "completed", 486 iwl_mvm_ebs_status_str(scan_notif->ebs_status)); 487 488 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; 489 ieee80211_scan_completed(mvm->hw, &info); 490 cancel_delayed_work(&mvm->scan_timeout_dwork); 491 iwl_mvm_resume_tcm(mvm); 492 } else { 493 IWL_ERR(mvm, 494 "got scan complete notification but no scan is running\n"); 495 } 496 497 mvm->last_ebs_successful = 498 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || 499 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; 500 } 501 502 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) 503 { 504 int i; 505 506 for (i = 0; i < PROBE_OPTION_MAX; i++) { 507 if (!ssid_list[i].len) 508 break; 509 if (ssid_list[i].len == ssid_len && 510 !memcmp(ssid_list->ssid, ssid, ssid_len)) 511 return i; 512 } 513 return -1; 514 } 515 516 /* We insert the SSIDs in an inverted order, because the FW will 517 * invert it back. 518 */ 519 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, 520 struct iwl_ssid_ie *ssids, 521 u32 *ssid_bitmap) 522 { 523 int i, j; 524 int index; 525 u32 tmp_bitmap = 0; 526 527 /* 528 * copy SSIDs from match list. 529 * iwl_config_sched_scan_profiles() uses the order of these ssids to 530 * config match list. 531 */ 532 for (i = 0, j = params->n_match_sets - 1; 533 j >= 0 && i < PROBE_OPTION_MAX; 534 i++, j--) { 535 /* skip empty SSID matchsets */ 536 if (!params->match_sets[j].ssid.ssid_len) 537 continue; 538 ssids[i].id = WLAN_EID_SSID; 539 ssids[i].len = params->match_sets[j].ssid.ssid_len; 540 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, 541 ssids[i].len); 542 } 543 544 /* add SSIDs from scan SSID list */ 545 for (j = params->n_ssids - 1; 546 j >= 0 && i < PROBE_OPTION_MAX; 547 i++, j--) { 548 index = iwl_ssid_exist(params->ssids[j].ssid, 549 params->ssids[j].ssid_len, 550 ssids); 551 if (index < 0) { 552 ssids[i].id = WLAN_EID_SSID; 553 ssids[i].len = params->ssids[j].ssid_len; 554 memcpy(ssids[i].ssid, params->ssids[j].ssid, 555 ssids[i].len); 556 tmp_bitmap |= BIT(i); 557 } else { 558 tmp_bitmap |= BIT(index); 559 } 560 } 561 if (ssid_bitmap) 562 *ssid_bitmap = tmp_bitmap; 563 } 564 565 static int 566 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, 567 struct cfg80211_sched_scan_request *req) 568 { 569 struct iwl_scan_offload_profile *profile; 570 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1; 571 struct iwl_scan_offload_blacklist *blacklist; 572 struct iwl_scan_offload_profile_cfg_data *data; 573 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); 574 int profile_cfg_size = sizeof(*data) + 575 sizeof(*profile) * max_profiles; 576 struct iwl_host_cmd cmd = { 577 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, 578 .len[1] = profile_cfg_size, 579 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 580 .dataflags[1] = IWL_HCMD_DFL_NOCOPY, 581 }; 582 int blacklist_len; 583 int i; 584 int ret; 585 586 if (WARN_ON(req->n_match_sets > max_profiles)) 587 return -EIO; 588 589 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) 590 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; 591 else 592 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; 593 594 blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL); 595 if (!blacklist) 596 return -ENOMEM; 597 598 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); 599 if (!profile_cfg_v1) { 600 ret = -ENOMEM; 601 goto free_blacklist; 602 } 603 604 cmd.data[0] = blacklist; 605 cmd.len[0] = sizeof(*blacklist) * blacklist_len; 606 cmd.data[1] = profile_cfg_v1; 607 608 /* if max_profile is MAX_PROFILES_V2, we have the new API */ 609 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { 610 struct iwl_scan_offload_profile_cfg *profile_cfg = 611 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; 612 613 data = &profile_cfg->data; 614 } else { 615 data = &profile_cfg_v1->data; 616 } 617 618 /* No blacklist configuration */ 619 data->num_profiles = req->n_match_sets; 620 data->active_clients = SCAN_CLIENT_SCHED_SCAN; 621 data->pass_match = SCAN_CLIENT_SCHED_SCAN; 622 data->match_notify = SCAN_CLIENT_SCHED_SCAN; 623 624 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) 625 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; 626 627 for (i = 0; i < req->n_match_sets; i++) { 628 profile = &profile_cfg_v1->profiles[i]; 629 profile->ssid_index = i; 630 /* Support any cipher and auth algorithm */ 631 profile->unicast_cipher = 0xff; 632 profile->auth_alg = 0xff; 633 profile->network_type = IWL_NETWORK_TYPE_ANY; 634 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; 635 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; 636 } 637 638 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); 639 640 ret = iwl_mvm_send_cmd(mvm, &cmd); 641 kfree(profile_cfg_v1); 642 free_blacklist: 643 kfree(blacklist); 644 645 return ret; 646 } 647 648 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, 649 struct cfg80211_sched_scan_request *req) 650 { 651 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { 652 IWL_DEBUG_SCAN(mvm, 653 "Sending scheduled scan with filtering, n_match_sets %d\n", 654 req->n_match_sets); 655 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 656 return false; 657 } 658 659 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); 660 661 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 662 return true; 663 } 664 665 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) 666 { 667 int ret; 668 struct iwl_host_cmd cmd = { 669 .id = SCAN_OFFLOAD_ABORT_CMD, 670 }; 671 u32 status = CAN_ABORT_STATUS; 672 673 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); 674 if (ret) 675 return ret; 676 677 if (status != CAN_ABORT_STATUS) { 678 /* 679 * The scan abort will return 1 for success or 680 * 2 for "failure". A failure condition can be 681 * due to simply not being in an active scan which 682 * can occur if we send the scan abort before the 683 * microcode has notified us that a scan is completed. 684 */ 685 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); 686 ret = -ENOENT; 687 } 688 689 return ret; 690 } 691 692 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, 693 struct iwl_scan_req_tx_cmd *tx_cmd, 694 bool no_cck) 695 { 696 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 697 TX_CMD_FLG_BT_DIS); 698 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 699 NL80211_BAND_2GHZ, 700 no_cck); 701 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 702 703 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 704 TX_CMD_FLG_BT_DIS); 705 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 706 NL80211_BAND_5GHZ, 707 no_cck); 708 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 709 } 710 711 static void 712 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 713 struct ieee80211_channel **channels, 714 int n_channels, u32 ssid_bitmap, 715 struct iwl_scan_req_lmac *cmd) 716 { 717 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 718 int i; 719 720 for (i = 0; i < n_channels; i++) { 721 channel_cfg[i].channel_num = 722 cpu_to_le16(channels[i]->hw_value); 723 channel_cfg[i].iter_count = cpu_to_le16(1); 724 channel_cfg[i].iter_interval = 0; 725 channel_cfg[i].flags = 726 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 727 ssid_bitmap); 728 } 729 } 730 731 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 732 size_t len, u8 *const pos) 733 { 734 static const u8 before_ds_params[] = { 735 WLAN_EID_SSID, 736 WLAN_EID_SUPP_RATES, 737 WLAN_EID_REQUEST, 738 WLAN_EID_EXT_SUPP_RATES, 739 }; 740 size_t offs; 741 u8 *newpos = pos; 742 743 if (!iwl_mvm_rrm_scan_needed(mvm)) { 744 memcpy(newpos, ies, len); 745 return newpos + len; 746 } 747 748 offs = ieee80211_ie_split(ies, len, 749 before_ds_params, 750 ARRAY_SIZE(before_ds_params), 751 0); 752 753 memcpy(newpos, ies, offs); 754 newpos += offs; 755 756 /* Add a placeholder for DS Parameter Set element */ 757 *newpos++ = WLAN_EID_DS_PARAMS; 758 *newpos++ = 1; 759 *newpos++ = 0; 760 761 memcpy(newpos, ies + offs, len - offs); 762 newpos += len - offs; 763 764 return newpos; 765 } 766 767 #define WFA_TPC_IE_LEN 9 768 769 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 770 { 771 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 772 pos[1] = WFA_TPC_IE_LEN - 2; 773 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 774 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 775 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 776 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 777 pos[6] = 0; 778 /* pos[7] - tx power will be inserted by the FW */ 779 pos[7] = 0; 780 pos[8] = 0; 781 } 782 783 static void 784 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 785 struct ieee80211_scan_ies *ies, 786 struct iwl_mvm_scan_params *params) 787 { 788 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 789 u8 *pos, *newpos; 790 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 791 params->mac_addr : NULL; 792 793 /* 794 * Unfortunately, right now the offload scan doesn't support randomising 795 * within the firmware, so until the firmware API is ready we implement 796 * it in the driver. This means that the scan iterations won't really be 797 * random, only when it's restarted, but at least that helps a bit. 798 */ 799 if (mac_addr) 800 get_random_mask_addr(frame->sa, mac_addr, 801 params->mac_addr_mask); 802 else 803 memcpy(frame->sa, vif->addr, ETH_ALEN); 804 805 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 806 eth_broadcast_addr(frame->da); 807 eth_broadcast_addr(frame->bssid); 808 frame->seq_ctrl = 0; 809 810 pos = frame->u.probe_req.variable; 811 *pos++ = WLAN_EID_SSID; 812 *pos++ = 0; 813 814 params->preq.mac_header.offset = 0; 815 params->preq.mac_header.len = cpu_to_le16(24 + 2); 816 817 /* Insert ds parameter set element on 2.4 GHz band */ 818 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 819 ies->ies[NL80211_BAND_2GHZ], 820 ies->len[NL80211_BAND_2GHZ], 821 pos); 822 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 823 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 824 pos = newpos; 825 826 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 827 ies->len[NL80211_BAND_5GHZ]); 828 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 829 params->preq.band_data[1].len = 830 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 831 pos += ies->len[NL80211_BAND_5GHZ]; 832 833 memcpy(pos, ies->common_ies, ies->common_ie_len); 834 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 835 836 if (iwl_mvm_rrm_scan_needed(mvm) && 837 !fw_has_capa(&mvm->fw->ucode_capa, 838 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 839 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 840 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 841 WFA_TPC_IE_LEN); 842 } else { 843 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 844 } 845 } 846 847 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 848 struct iwl_scan_req_lmac *cmd, 849 struct iwl_mvm_scan_params *params) 850 { 851 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 852 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 853 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 854 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 855 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 856 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 857 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 858 } 859 860 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 861 struct ieee80211_scan_ies *ies, 862 int n_channels) 863 { 864 return ((n_ssids <= PROBE_OPTION_MAX) && 865 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 866 (ies->common_ie_len + 867 ies->len[NL80211_BAND_2GHZ] + 868 ies->len[NL80211_BAND_5GHZ] <= 869 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 870 } 871 872 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 873 struct ieee80211_vif *vif) 874 { 875 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 876 bool low_latency; 877 878 if (iwl_mvm_is_cdb_supported(mvm)) 879 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 880 else 881 low_latency = iwl_mvm_low_latency(mvm); 882 883 /* We can only use EBS if: 884 * 1. the feature is supported; 885 * 2. the last EBS was successful; 886 * 3. if only single scan, the single scan EBS API is supported; 887 * 4. it's not a p2p find operation. 888 * 5. we are not in low latency mode, 889 * or if fragmented ebs is supported by the FW 890 */ 891 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 892 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 893 vif->type != NL80211_IFTYPE_P2P_DEVICE && 894 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 895 } 896 897 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 898 { 899 return params->n_scan_plans == 1 && 900 params->scan_plans[0].iterations == 1; 901 } 902 903 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 904 { 905 return (type == IWL_SCAN_TYPE_FRAGMENTED || 906 type == IWL_SCAN_TYPE_FAST_BALANCE); 907 } 908 909 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 910 struct iwl_mvm_scan_params *params, 911 struct ieee80211_vif *vif) 912 { 913 int flags = 0; 914 915 if (params->n_ssids == 0) 916 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 917 918 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 919 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 920 921 if (iwl_mvm_is_scan_fragmented(params->type)) 922 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 923 924 if (iwl_mvm_rrm_scan_needed(mvm) && 925 fw_has_capa(&mvm->fw->ucode_capa, 926 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 927 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 928 929 if (params->pass_all) 930 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 931 else 932 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 933 934 #ifdef CONFIG_IWLWIFI_DEBUGFS 935 if (mvm->scan_iter_notif_enabled) 936 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 937 #endif 938 939 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 940 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 941 942 if (iwl_mvm_is_regular_scan(params) && 943 vif->type != NL80211_IFTYPE_P2P_DEVICE && 944 !iwl_mvm_is_scan_fragmented(params->type)) 945 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 946 947 return flags; 948 } 949 950 static void 951 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 952 struct iwl_scan_probe_req *src_p_req) 953 { 954 int i; 955 956 p_req->mac_header = src_p_req->mac_header; 957 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 958 p_req->band_data[i] = src_p_req->band_data[i]; 959 p_req->common_data = src_p_req->common_data; 960 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 961 } 962 963 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 964 struct iwl_mvm_scan_params *params) 965 { 966 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 967 struct iwl_scan_probe_req_v1 *preq = 968 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 969 mvm->fw->ucode_capa.n_scan_channels); 970 u32 ssid_bitmap = 0; 971 int i; 972 u8 band; 973 974 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 975 return -EINVAL; 976 977 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 978 979 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 980 cmd->iter_num = cpu_to_le32(1); 981 cmd->n_channels = (u8)params->n_channels; 982 983 cmd->delay = cpu_to_le32(params->delay); 984 985 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 986 vif)); 987 988 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 989 cmd->flags = cpu_to_le32(band); 990 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | 991 MAC_FILTER_IN_BEACON); 992 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); 993 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); 994 995 /* this API uses bits 1-20 instead of 0-19 */ 996 ssid_bitmap <<= 1; 997 998 for (i = 0; i < params->n_scan_plans; i++) { 999 struct cfg80211_sched_scan_plan *scan_plan = 1000 ¶ms->scan_plans[i]; 1001 1002 cmd->schedule[i].delay = 1003 cpu_to_le16(scan_plan->interval); 1004 cmd->schedule[i].iterations = scan_plan->iterations; 1005 cmd->schedule[i].full_scan_mul = 1; 1006 } 1007 1008 /* 1009 * If the number of iterations of the last scan plan is set to 1010 * zero, it should run infinitely. However, this is not always the case. 1011 * For example, when regular scan is requested the driver sets one scan 1012 * plan with one iteration. 1013 */ 1014 if (!cmd->schedule[i - 1].iterations) 1015 cmd->schedule[i - 1].iterations = 0xff; 1016 1017 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1018 cmd->channel_opt[0].flags = 1019 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1020 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1021 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1022 cmd->channel_opt[0].non_ebs_ratio = 1023 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); 1024 cmd->channel_opt[1].flags = 1025 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | 1026 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1027 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); 1028 cmd->channel_opt[1].non_ebs_ratio = 1029 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); 1030 } 1031 1032 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, 1033 params->n_channels, ssid_bitmap, cmd); 1034 1035 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); 1036 1037 return 0; 1038 } 1039 1040 static int rate_to_scan_rate_flag(unsigned int rate) 1041 { 1042 static const int rate_to_scan_rate[IWL_RATE_COUNT] = { 1043 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, 1044 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, 1045 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, 1046 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, 1047 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, 1048 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, 1049 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, 1050 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, 1051 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, 1052 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, 1053 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, 1054 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, 1055 }; 1056 1057 return rate_to_scan_rate[rate]; 1058 } 1059 1060 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) 1061 { 1062 struct ieee80211_supported_band *band; 1063 unsigned int rates = 0; 1064 int i; 1065 1066 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1067 for (i = 0; i < band->n_bitrates; i++) 1068 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1069 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1070 for (i = 0; i < band->n_bitrates; i++) 1071 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); 1072 1073 /* Set both basic rates and supported rates */ 1074 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); 1075 1076 return cpu_to_le32(rates); 1077 } 1078 1079 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, 1080 struct iwl_scan_dwell *dwell) 1081 { 1082 dwell->active = IWL_SCAN_DWELL_ACTIVE; 1083 dwell->passive = IWL_SCAN_DWELL_PASSIVE; 1084 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; 1085 dwell->extended = IWL_SCAN_DWELL_EXTENDED; 1086 } 1087 1088 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, 1089 u32 max_channels) 1090 { 1091 struct ieee80211_supported_band *band; 1092 int i, j = 0; 1093 1094 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 1095 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1096 channels[j] = band->channels[i].hw_value; 1097 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 1098 for (i = 0; i < band->n_channels && j < max_channels; i++, j++) 1099 channels[j] = band->channels[i].hw_value; 1100 } 1101 1102 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, 1103 u32 flags, u8 channel_flags, 1104 u32 max_channels) 1105 { 1106 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); 1107 struct iwl_scan_config_v1 *cfg = config; 1108 1109 cfg->flags = cpu_to_le32(flags); 1110 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1111 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1112 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1113 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); 1114 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); 1115 1116 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1117 1118 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1119 1120 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1121 cfg->channel_flags = channel_flags; 1122 1123 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1124 } 1125 1126 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1127 u32 flags, u8 channel_flags, 1128 u32 max_channels) 1129 { 1130 struct iwl_scan_config_v2 *cfg = config; 1131 1132 cfg->flags = cpu_to_le32(flags); 1133 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1134 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1135 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1136 1137 if (iwl_mvm_is_cdb_supported(mvm)) { 1138 enum iwl_mvm_scan_type lb_type, hb_type; 1139 1140 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1141 NL80211_BAND_2GHZ); 1142 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1143 NL80211_BAND_5GHZ); 1144 1145 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1146 cpu_to_le32(scan_timing[lb_type].max_out_time); 1147 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1148 cpu_to_le32(scan_timing[lb_type].suspend_time); 1149 1150 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1151 cpu_to_le32(scan_timing[hb_type].max_out_time); 1152 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1153 cpu_to_le32(scan_timing[hb_type].suspend_time); 1154 } else { 1155 enum iwl_mvm_scan_type type = 1156 iwl_mvm_get_scan_type(mvm, NULL); 1157 1158 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1159 cpu_to_le32(scan_timing[type].max_out_time); 1160 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1161 cpu_to_le32(scan_timing[type].suspend_time); 1162 } 1163 1164 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1165 1166 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1167 1168 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1169 cfg->channel_flags = channel_flags; 1170 1171 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1172 } 1173 1174 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1175 { 1176 void *cfg; 1177 int ret, cmd_size; 1178 struct iwl_host_cmd cmd = { 1179 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1180 }; 1181 enum iwl_mvm_scan_type type; 1182 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1183 int num_channels = 1184 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1185 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1186 u32 flags; 1187 u8 channel_flags; 1188 1189 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1190 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1191 1192 if (iwl_mvm_is_cdb_supported(mvm)) { 1193 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1194 NL80211_BAND_2GHZ); 1195 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1196 NL80211_BAND_5GHZ); 1197 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1198 return 0; 1199 } else { 1200 type = iwl_mvm_get_scan_type(mvm, NULL); 1201 if (type == mvm->scan_type) 1202 return 0; 1203 } 1204 1205 if (iwl_mvm_cdb_scan_api(mvm)) 1206 cmd_size = sizeof(struct iwl_scan_config_v2); 1207 else 1208 cmd_size = sizeof(struct iwl_scan_config_v1); 1209 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1210 1211 cfg = kzalloc(cmd_size, GFP_KERNEL); 1212 if (!cfg) 1213 return -ENOMEM; 1214 1215 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1216 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1217 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1218 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1219 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1220 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1221 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1222 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1223 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1224 SCAN_CONFIG_N_CHANNELS(num_channels) | 1225 (iwl_mvm_is_scan_fragmented(type) ? 1226 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1227 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1228 1229 channel_flags = IWL_CHANNEL_FLAG_EBS | 1230 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1231 IWL_CHANNEL_FLAG_EBS_ADD | 1232 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1233 1234 /* 1235 * Check for fragmented scan on LMAC2 - high band. 1236 * LMAC1 - low band is checked above. 1237 */ 1238 if (iwl_mvm_cdb_scan_api(mvm)) { 1239 if (iwl_mvm_is_cdb_supported(mvm)) 1240 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1241 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1242 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1243 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1244 num_channels); 1245 } else { 1246 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1247 num_channels); 1248 } 1249 1250 cmd.data[0] = cfg; 1251 cmd.len[0] = cmd_size; 1252 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1253 1254 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1255 1256 ret = iwl_mvm_send_cmd(mvm, &cmd); 1257 if (!ret) { 1258 mvm->scan_type = type; 1259 mvm->hb_scan_type = hb_type; 1260 } 1261 1262 kfree(cfg); 1263 return ret; 1264 } 1265 1266 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1267 { 1268 struct iwl_scan_config cfg; 1269 struct iwl_host_cmd cmd = { 1270 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1271 .len[0] = sizeof(cfg), 1272 .data[0] = &cfg, 1273 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1274 }; 1275 1276 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1277 return iwl_mvm_legacy_config_scan(mvm); 1278 1279 memset(&cfg, 0, sizeof(cfg)); 1280 1281 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1282 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1283 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1284 1285 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1286 1287 return iwl_mvm_send_cmd(mvm, &cmd); 1288 } 1289 1290 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1291 { 1292 int i; 1293 1294 for (i = 0; i < mvm->max_scans; i++) 1295 if (mvm->scan_uid_status[i] == status) 1296 return i; 1297 1298 return -ENOENT; 1299 } 1300 1301 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1302 struct iwl_scan_req_umac *cmd, 1303 struct iwl_mvm_scan_params *params) 1304 { 1305 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1306 u8 active_dwell, passive_dwell; 1307 1308 timing = &scan_timing[params->type]; 1309 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1310 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1311 1312 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1313 cmd->v7.adwell_default_n_aps_social = 1314 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1315 cmd->v7.adwell_default_n_aps = 1316 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1317 1318 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1319 cmd->v9.adwell_default_hb_n_aps = 1320 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1321 1322 /* if custom max budget was configured with debugfs */ 1323 if (IWL_MVM_ADWELL_MAX_BUDGET) 1324 cmd->v7.adwell_max_budget = 1325 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1326 else if (params->ssids && params->ssids[0].ssid_len) 1327 cmd->v7.adwell_max_budget = 1328 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1329 else 1330 cmd->v7.adwell_max_budget = 1331 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1332 1333 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1334 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1335 cpu_to_le32(timing->max_out_time); 1336 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1337 cpu_to_le32(timing->suspend_time); 1338 1339 if (iwl_mvm_is_cdb_supported(mvm)) { 1340 hb_timing = &scan_timing[params->hb_type]; 1341 1342 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1343 cpu_to_le32(hb_timing->max_out_time); 1344 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1345 cpu_to_le32(hb_timing->suspend_time); 1346 } 1347 1348 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1349 cmd->v7.active_dwell = active_dwell; 1350 cmd->v7.passive_dwell = passive_dwell; 1351 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1352 } else { 1353 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1354 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1355 if (iwl_mvm_is_cdb_supported(mvm)) { 1356 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1357 active_dwell; 1358 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1359 passive_dwell; 1360 } 1361 } 1362 } else { 1363 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1364 cmd->v1.active_dwell = active_dwell; 1365 cmd->v1.passive_dwell = passive_dwell; 1366 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1367 1368 if (iwl_mvm_is_cdb_supported(mvm)) { 1369 hb_timing = &scan_timing[params->hb_type]; 1370 1371 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1372 cpu_to_le32(hb_timing->max_out_time); 1373 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1374 cpu_to_le32(hb_timing->suspend_time); 1375 } 1376 1377 if (iwl_mvm_cdb_scan_api(mvm)) { 1378 cmd->v6.scan_priority = 1379 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1380 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1381 cpu_to_le32(timing->max_out_time); 1382 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1383 cpu_to_le32(timing->suspend_time); 1384 } else { 1385 cmd->v1.scan_priority = 1386 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1387 cmd->v1.max_out_time = 1388 cpu_to_le32(timing->max_out_time); 1389 cmd->v1.suspend_time = 1390 cpu_to_le32(timing->suspend_time); 1391 } 1392 } 1393 1394 if (iwl_mvm_is_regular_scan(params)) 1395 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1396 else 1397 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1398 } 1399 1400 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1401 { 1402 return iwl_mvm_is_regular_scan(params) ? 1403 IWL_SCAN_PRIORITY_EXT_6 : 1404 IWL_SCAN_PRIORITY_EXT_2; 1405 } 1406 1407 static void 1408 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, 1409 struct iwl_scan_general_params_v10 *general_params, 1410 struct iwl_mvm_scan_params *params) 1411 { 1412 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1413 u8 active_dwell, passive_dwell; 1414 1415 timing = &scan_timing[params->type]; 1416 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1417 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1418 1419 general_params->adwell_default_social_chn = 1420 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1421 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1422 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1423 1424 /* if custom max budget was configured with debugfs */ 1425 if (IWL_MVM_ADWELL_MAX_BUDGET) 1426 general_params->adwell_max_budget = 1427 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1428 else if (params->ssids && params->ssids[0].ssid_len) 1429 general_params->adwell_max_budget = 1430 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1431 else 1432 general_params->adwell_max_budget = 1433 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1434 1435 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1436 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1437 cpu_to_le32(timing->max_out_time); 1438 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1439 cpu_to_le32(timing->suspend_time); 1440 1441 hb_timing = &scan_timing[params->hb_type]; 1442 1443 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1444 cpu_to_le32(hb_timing->max_out_time); 1445 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1446 cpu_to_le32(hb_timing->suspend_time); 1447 1448 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1449 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1450 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1451 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1452 } 1453 1454 struct iwl_mvm_scan_channel_segment { 1455 u8 start_idx; 1456 u8 end_idx; 1457 u8 first_channel_id; 1458 u8 last_channel_id; 1459 u8 channel_spacing_shift; 1460 u8 band; 1461 }; 1462 1463 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1464 { 1465 .start_idx = 0, 1466 .end_idx = 13, 1467 .first_channel_id = 1, 1468 .last_channel_id = 14, 1469 .channel_spacing_shift = 0, 1470 .band = PHY_BAND_24 1471 }, 1472 { 1473 .start_idx = 14, 1474 .end_idx = 41, 1475 .first_channel_id = 36, 1476 .last_channel_id = 144, 1477 .channel_spacing_shift = 2, 1478 .band = PHY_BAND_5 1479 }, 1480 { 1481 .start_idx = 42, 1482 .end_idx = 50, 1483 .first_channel_id = 149, 1484 .last_channel_id = 181, 1485 .channel_spacing_shift = 2, 1486 .band = PHY_BAND_5 1487 }, 1488 }; 1489 1490 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1491 { 1492 int i, index; 1493 1494 if (!channel_id) 1495 return -EINVAL; 1496 1497 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1498 const struct iwl_mvm_scan_channel_segment *ch_segment = 1499 &scan_channel_segments[i]; 1500 u32 ch_offset; 1501 1502 if (ch_segment->band != band || 1503 ch_segment->first_channel_id > channel_id || 1504 ch_segment->last_channel_id < channel_id) 1505 continue; 1506 1507 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1508 ch_segment->channel_spacing_shift; 1509 1510 index = scan_channel_segments[i].start_idx + ch_offset; 1511 if (index < IWL_SCAN_NUM_CHANNELS) 1512 return index; 1513 1514 break; 1515 } 1516 1517 return -EINVAL; 1518 } 1519 1520 static const u8 p2p_go_friendly_chs[] = { 1521 36, 40, 44, 48, 149, 153, 157, 161, 165, 1522 }; 1523 1524 static const u8 social_chs[] = { 1525 1, 6, 11 1526 }; 1527 1528 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1529 u8 ch_id, u8 band, u8 *ch_bitmap, 1530 size_t bitmap_n_entries) 1531 { 1532 int i; 1533 1534 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1535 return; 1536 1537 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1538 if (p2p_go_friendly_chs[i] == ch_id) { 1539 int ch_idx, bitmap_idx; 1540 1541 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1542 if (ch_idx < 0) 1543 return; 1544 1545 bitmap_idx = ch_idx / 8; 1546 if (bitmap_idx >= bitmap_n_entries) 1547 return; 1548 1549 ch_idx = ch_idx % 8; 1550 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1551 1552 return; 1553 } 1554 } 1555 } 1556 1557 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1558 { 1559 int i; 1560 u32 flags = 0; 1561 1562 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1563 goto out; 1564 1565 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1566 if (p2p_go_friendly_chs[i] == ch_id) { 1567 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1568 break; 1569 } 1570 } 1571 1572 if (flags) 1573 goto out; 1574 1575 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1576 if (social_chs[i] == ch_id) { 1577 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1578 break; 1579 } 1580 } 1581 1582 out: 1583 return flags; 1584 } 1585 1586 static void 1587 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1588 struct ieee80211_channel **channels, 1589 int n_channels, u32 flags, 1590 struct iwl_scan_channel_cfg_umac *channel_cfg) 1591 { 1592 int i; 1593 1594 for (i = 0; i < n_channels; i++) { 1595 channel_cfg[i].flags = cpu_to_le32(flags); 1596 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1597 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1598 enum nl80211_band band = channels[i]->band; 1599 1600 channel_cfg[i].v2.band = 1601 iwl_mvm_phy_band_from_nl80211(band); 1602 channel_cfg[i].v2.iter_count = 1; 1603 channel_cfg[i].v2.iter_interval = 0; 1604 } else { 1605 channel_cfg[i].v1.iter_count = 1; 1606 channel_cfg[i].v1.iter_interval = 0; 1607 } 1608 } 1609 } 1610 1611 static void 1612 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1613 struct ieee80211_channel **channels, 1614 struct iwl_scan_channel_params_v4 *cp, 1615 int n_channels, u32 flags, 1616 enum nl80211_iftype vif_type) 1617 { 1618 u8 *bitmap = cp->adwell_ch_override_bitmap; 1619 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1620 int i; 1621 1622 for (i = 0; i < n_channels; i++) { 1623 enum nl80211_band band = channels[i]->band; 1624 struct iwl_scan_channel_cfg_umac *cfg = 1625 &cp->channel_config[i]; 1626 1627 cfg->flags = cpu_to_le32(flags); 1628 cfg->v2.channel_num = channels[i]->hw_value; 1629 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1630 cfg->v2.iter_count = 1; 1631 cfg->v2.iter_interval = 0; 1632 1633 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1634 cfg->v2.channel_num, 1635 cfg->v2.band, bitmap, 1636 bitmap_n_entries); 1637 } 1638 } 1639 1640 static void 1641 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1642 struct ieee80211_channel **channels, 1643 struct iwl_scan_channel_params_v6 *cp, 1644 int n_channels, u32 flags, 1645 enum nl80211_iftype vif_type) 1646 { 1647 int i; 1648 1649 for (i = 0; i < n_channels; i++) { 1650 enum nl80211_band band = channels[i]->band; 1651 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1652 u32 n_aps_flag = 1653 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1654 cfg->v2.channel_num); 1655 1656 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1657 cfg->v2.channel_num = channels[i]->hw_value; 1658 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1659 cfg->v2.iter_count = 1; 1660 cfg->v2.iter_interval = 0; 1661 } 1662 } 1663 1664 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1665 struct iwl_mvm_scan_params *params, 1666 struct ieee80211_vif *vif) 1667 { 1668 u8 flags = 0; 1669 1670 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1671 1672 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1673 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1674 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1675 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1676 1677 /* set fragmented ebs for fragmented scan on HB channels */ 1678 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1679 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1680 1681 return flags; 1682 } 1683 1684 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 1685 struct iwl_mvm_scan_params *params, 1686 struct ieee80211_vif *vif, 1687 int type) 1688 { 1689 u16 flags = 0; 1690 1691 if (params->n_ssids == 0) 1692 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 1693 1694 if (iwl_mvm_is_scan_fragmented(params->type)) 1695 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 1696 1697 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1698 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 1699 1700 if (params->pass_all) 1701 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 1702 else 1703 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 1704 1705 if (!iwl_mvm_is_regular_scan(params)) 1706 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 1707 1708 if (params->iter_notif || 1709 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1710 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 1711 1712 if (IWL_MVM_ADWELL_ENABLE) 1713 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 1714 1715 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1716 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 1717 1718 return flags; 1719 } 1720 1721 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1722 struct iwl_mvm_scan_params *params, 1723 struct ieee80211_vif *vif) 1724 { 1725 u16 flags = 0; 1726 1727 if (params->n_ssids == 0) 1728 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1729 1730 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1731 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1732 1733 if (iwl_mvm_is_scan_fragmented(params->type)) 1734 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1735 1736 if (iwl_mvm_is_cdb_supported(mvm) && 1737 iwl_mvm_is_scan_fragmented(params->hb_type)) 1738 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1739 1740 if (iwl_mvm_rrm_scan_needed(mvm) && 1741 fw_has_capa(&mvm->fw->ucode_capa, 1742 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1743 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1744 1745 if (params->pass_all) 1746 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1747 else 1748 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1749 1750 if (!iwl_mvm_is_regular_scan(params)) 1751 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1752 1753 if (params->iter_notif) 1754 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1755 1756 #ifdef CONFIG_IWLWIFI_DEBUGFS 1757 if (mvm->scan_iter_notif_enabled) 1758 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1759 #endif 1760 1761 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1762 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1763 1764 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 1765 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1766 1767 /* 1768 * Extended dwell is relevant only for low band to start with, as it is 1769 * being used for social channles only (1, 6, 11), so we can check 1770 * only scan type on low band also for CDB. 1771 */ 1772 if (iwl_mvm_is_regular_scan(params) && 1773 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1774 !iwl_mvm_is_scan_fragmented(params->type) && 1775 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1776 !iwl_mvm_is_oce_supported(mvm)) 1777 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1778 1779 if (iwl_mvm_is_oce_supported(mvm)) { 1780 if ((params->flags & 1781 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1782 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1783 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1784 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1785 * the same bit, we need to make sure that we use this bit here 1786 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1787 * used. */ 1788 if ((params->flags & 1789 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1790 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1791 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1792 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1793 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1794 } 1795 1796 return flags; 1797 } 1798 1799 static int 1800 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 1801 struct iwl_scan_umac_schedule *schedule, 1802 __le16 *delay) 1803 { 1804 int i; 1805 if (WARN_ON(!params->n_scan_plans || 1806 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 1807 return -EINVAL; 1808 1809 for (i = 0; i < params->n_scan_plans; i++) { 1810 struct cfg80211_sched_scan_plan *scan_plan = 1811 ¶ms->scan_plans[i]; 1812 1813 schedule[i].iter_count = scan_plan->iterations; 1814 schedule[i].interval = 1815 cpu_to_le16(scan_plan->interval); 1816 } 1817 1818 /* 1819 * If the number of iterations of the last scan plan is set to 1820 * zero, it should run infinitely. However, this is not always the case. 1821 * For example, when regular scan is requested the driver sets one scan 1822 * plan with one iteration. 1823 */ 1824 if (!schedule[params->n_scan_plans - 1].iter_count) 1825 schedule[params->n_scan_plans - 1].iter_count = 0xff; 1826 1827 *delay = cpu_to_le16(params->delay); 1828 1829 return 0; 1830 } 1831 1832 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1833 struct iwl_mvm_scan_params *params, 1834 int type, int uid) 1835 { 1836 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 1837 struct iwl_scan_umac_chan_param *chan_param; 1838 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 1839 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 1840 mvm->fw->ucode_capa.n_scan_channels; 1841 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 1842 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 1843 struct iwl_scan_req_umac_tail_v1 *tail_v1; 1844 struct iwl_ssid_ie *direct_scan; 1845 int ret = 0; 1846 u32 ssid_bitmap = 0; 1847 u8 channel_flags = 0; 1848 u16 gen_flags; 1849 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1850 1851 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 1852 1853 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 1854 1855 mvm->scan_uid_status[uid] = type; 1856 1857 cmd->uid = cpu_to_le32(uid); 1858 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 1859 cmd->general_flags = cpu_to_le16(gen_flags); 1860 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1861 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 1862 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 1863 IWL_SCAN_NUM_OF_FRAGS; 1864 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 1865 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 1866 IWL_SCAN_NUM_OF_FRAGS; 1867 1868 cmd->v8.general_flags2 = 1869 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 1870 } 1871 1872 cmd->scan_start_mac_id = scan_vif->id; 1873 1874 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1875 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 1876 1877 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1878 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 1879 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1880 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1881 1882 /* set fragmented ebs for fragmented scan on HB channels */ 1883 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 1884 if (gen_flags & 1885 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 1886 (!iwl_mvm_is_cdb_supported(mvm) && 1887 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 1888 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1889 } 1890 } 1891 1892 chan_param->flags = channel_flags; 1893 chan_param->count = params->n_channels; 1894 1895 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 1896 &tail_v2->delay); 1897 if (ret) 1898 return ret; 1899 1900 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1901 tail_v2->preq = params->preq; 1902 direct_scan = tail_v2->direct_scan; 1903 } else { 1904 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 1905 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 1906 ¶ms->preq); 1907 direct_scan = tail_v1->direct_scan; 1908 } 1909 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 1910 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 1911 params->n_channels, ssid_bitmap, 1912 cmd_data); 1913 return 0; 1914 } 1915 1916 static void 1917 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, 1918 struct iwl_mvm_scan_params *params, 1919 struct ieee80211_vif *vif, 1920 struct iwl_scan_general_params_v10 *gp, 1921 u16 gen_flags) 1922 { 1923 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1924 1925 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); 1926 1927 gp->flags = cpu_to_le16(gen_flags); 1928 1929 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 1930 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 1931 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 1932 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 1933 1934 gp->scan_start_mac_id = scan_vif->id; 1935 } 1936 1937 static void 1938 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 1939 struct iwl_scan_probe_params_v3 *pp) 1940 { 1941 pp->preq = params->preq; 1942 pp->ssid_num = params->n_ssids; 1943 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 1944 } 1945 1946 static void 1947 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 1948 struct iwl_scan_probe_params_v4 *pp, 1949 u32 *bitmap_ssid) 1950 { 1951 pp->preq = params->preq; 1952 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 1953 } 1954 1955 static void 1956 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 1957 struct iwl_mvm_scan_params *params, 1958 struct ieee80211_vif *vif, 1959 struct iwl_scan_channel_params_v4 *cp, 1960 u32 channel_cfg_flags) 1961 { 1962 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 1963 cp->count = params->n_channels; 1964 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 1965 1966 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 1967 params->n_channels, 1968 channel_cfg_flags, 1969 vif->type); 1970 } 1971 1972 static void 1973 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 1974 struct iwl_mvm_scan_params *params, 1975 struct ieee80211_vif *vif, 1976 struct iwl_scan_channel_params_v6 *cp, 1977 u32 channel_cfg_flags) 1978 { 1979 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 1980 cp->count = params->n_channels; 1981 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 1982 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 1983 1984 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 1985 params->n_channels, 1986 channel_cfg_flags, 1987 vif->type); 1988 } 1989 1990 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1991 struct iwl_mvm_scan_params *params, int type, 1992 int uid) 1993 { 1994 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 1995 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 1996 int ret; 1997 u16 gen_flags; 1998 1999 mvm->scan_uid_status[uid] = type; 2000 2001 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2002 cmd->uid = cpu_to_le32(uid); 2003 2004 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2005 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2006 &scan_p->general_params, 2007 gen_flags); 2008 2009 ret = iwl_mvm_fill_scan_sched_params(params, 2010 scan_p->periodic_params.schedule, 2011 &scan_p->periodic_params.delay); 2012 if (ret) 2013 return ret; 2014 2015 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2016 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2017 &scan_p->channel_params, 0); 2018 2019 return 0; 2020 } 2021 2022 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2023 struct iwl_mvm_scan_params *params, int type, 2024 int uid) 2025 { 2026 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd; 2027 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params; 2028 int ret; 2029 u16 gen_flags; 2030 u32 bitmap_ssid = 0; 2031 2032 mvm->scan_uid_status[uid] = type; 2033 2034 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2035 cmd->uid = cpu_to_le32(uid); 2036 2037 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2038 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2039 &scan_p->general_params, 2040 gen_flags); 2041 2042 ret = iwl_mvm_fill_scan_sched_params(params, 2043 scan_p->periodic_params.schedule, 2044 &scan_p->periodic_params.delay); 2045 if (ret) 2046 return ret; 2047 2048 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2049 &bitmap_ssid); 2050 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2051 &scan_p->channel_params, bitmap_ssid); 2052 2053 return 0; 2054 } 2055 2056 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2057 { 2058 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2059 } 2060 2061 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2062 { 2063 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2064 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2065 2066 /* This looks a bit arbitrary, but the idea is that if we run 2067 * out of possible simultaneous scans and the userspace is 2068 * trying to run a scan type that is already running, we 2069 * return -EBUSY. But if the userspace wants to start a 2070 * different type of scan, we stop the opposite type to make 2071 * space for the new request. The reason is backwards 2072 * compatibility with old wpa_supplicant that wouldn't stop a 2073 * scheduled scan before starting a normal scan. 2074 */ 2075 2076 /* FW supports only a single periodic scan */ 2077 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2078 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2079 return -EBUSY; 2080 2081 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2082 return 0; 2083 2084 /* Use a switch, even though this is a bitmask, so that more 2085 * than one bits set will fall in default and we will warn. 2086 */ 2087 switch (type) { 2088 case IWL_MVM_SCAN_REGULAR: 2089 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2090 return -EBUSY; 2091 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2092 case IWL_MVM_SCAN_SCHED: 2093 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2094 return -EBUSY; 2095 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2096 case IWL_MVM_SCAN_NETDETECT: 2097 /* For non-unified images, there's no need to stop 2098 * anything for net-detect since the firmware is 2099 * restarted anyway. This way, any sched scans that 2100 * were running will be restarted when we resume. 2101 */ 2102 if (!unified_image) 2103 return 0; 2104 2105 /* If this is a unified image and we ran out of scans, 2106 * we need to stop something. Prefer stopping regular 2107 * scans, because the results are useless at this 2108 * point, and we should be able to keep running 2109 * another scheduled scan while suspended. 2110 */ 2111 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2112 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2113 true); 2114 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2115 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2116 true); 2117 /* Something is wrong if no scan was running but we 2118 * ran out of scans. 2119 */ 2120 /* fall through */ 2121 default: 2122 WARN_ON(1); 2123 break; 2124 } 2125 2126 return -EIO; 2127 } 2128 2129 #define SCAN_TIMEOUT 20000 2130 2131 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2132 { 2133 struct delayed_work *delayed_work = to_delayed_work(work); 2134 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2135 scan_timeout_dwork); 2136 2137 IWL_ERR(mvm, "regular scan timed out\n"); 2138 2139 iwl_force_nmi(mvm->trans); 2140 } 2141 2142 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2143 struct iwl_mvm_scan_params *params, 2144 struct ieee80211_vif *vif) 2145 { 2146 if (iwl_mvm_is_cdb_supported(mvm)) { 2147 params->type = 2148 iwl_mvm_get_scan_type_band(mvm, vif, 2149 NL80211_BAND_2GHZ); 2150 params->hb_type = 2151 iwl_mvm_get_scan_type_band(mvm, vif, 2152 NL80211_BAND_5GHZ); 2153 } else { 2154 params->type = iwl_mvm_get_scan_type(mvm, vif); 2155 } 2156 } 2157 2158 struct iwl_scan_umac_handler { 2159 u8 version; 2160 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2161 struct iwl_mvm_scan_params *params, int type, int uid); 2162 }; 2163 2164 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2165 .version = _ver, \ 2166 .handler = iwl_mvm_scan_umac_v##_ver, \ 2167 } 2168 2169 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2170 /* set the newest version first to shorten the list traverse time */ 2171 IWL_SCAN_UMAC_HANDLER(14), 2172 IWL_SCAN_UMAC_HANDLER(12), 2173 }; 2174 2175 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2176 struct ieee80211_vif *vif, 2177 struct iwl_host_cmd *hcmd, 2178 struct iwl_mvm_scan_params *params, 2179 int type) 2180 { 2181 int uid, i; 2182 u8 scan_ver; 2183 2184 lockdep_assert_held(&mvm->mutex); 2185 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2186 2187 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2188 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2189 2190 return iwl_mvm_scan_lmac(mvm, vif, params); 2191 } 2192 2193 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2194 if (uid < 0) 2195 return uid; 2196 2197 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2198 2199 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2200 SCAN_REQ_UMAC, 2201 IWL_FW_CMD_VER_UNKNOWN); 2202 2203 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2204 const struct iwl_scan_umac_handler *ver_handler = 2205 &iwl_scan_umac_handlers[i]; 2206 2207 if (ver_handler->version != scan_ver) 2208 continue; 2209 2210 return ver_handler->handler(mvm, vif, params, type, uid); 2211 } 2212 2213 return iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2214 } 2215 2216 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2217 struct cfg80211_scan_request *req, 2218 struct ieee80211_scan_ies *ies) 2219 { 2220 struct iwl_host_cmd hcmd = { 2221 .len = { iwl_mvm_scan_size(mvm), }, 2222 .data = { mvm->scan_cmd, }, 2223 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2224 }; 2225 struct iwl_mvm_scan_params params = {}; 2226 int ret; 2227 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2228 2229 lockdep_assert_held(&mvm->mutex); 2230 2231 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2232 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2233 return -EBUSY; 2234 } 2235 2236 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2237 if (ret) 2238 return ret; 2239 2240 /* we should have failed registration if scan_cmd was NULL */ 2241 if (WARN_ON(!mvm->scan_cmd)) 2242 return -ENOMEM; 2243 2244 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2245 return -ENOBUFS; 2246 2247 params.n_ssids = req->n_ssids; 2248 params.flags = req->flags; 2249 params.n_channels = req->n_channels; 2250 params.delay = 0; 2251 params.ssids = req->ssids; 2252 params.channels = req->channels; 2253 params.mac_addr = req->mac_addr; 2254 params.mac_addr_mask = req->mac_addr_mask; 2255 params.no_cck = req->no_cck; 2256 params.pass_all = true; 2257 params.n_match_sets = 0; 2258 params.match_sets = NULL; 2259 2260 params.scan_plans = &scan_plan; 2261 params.n_scan_plans = 1; 2262 2263 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2264 2265 if (req->duration) 2266 params.iter_notif = true; 2267 2268 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2269 2270 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2271 IWL_MVM_SCAN_REGULAR); 2272 2273 if (ret) 2274 return ret; 2275 2276 iwl_mvm_pause_tcm(mvm, false); 2277 2278 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2279 if (ret) { 2280 /* If the scan failed, it usually means that the FW was unable 2281 * to allocate the time events. Warn on it, but maybe we 2282 * should try to send the command again with different params. 2283 */ 2284 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2285 iwl_mvm_resume_tcm(mvm); 2286 return ret; 2287 } 2288 2289 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2290 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2291 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2292 2293 schedule_delayed_work(&mvm->scan_timeout_dwork, 2294 msecs_to_jiffies(SCAN_TIMEOUT)); 2295 2296 return 0; 2297 } 2298 2299 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2300 struct ieee80211_vif *vif, 2301 struct cfg80211_sched_scan_request *req, 2302 struct ieee80211_scan_ies *ies, 2303 int type) 2304 { 2305 struct iwl_host_cmd hcmd = { 2306 .len = { iwl_mvm_scan_size(mvm), }, 2307 .data = { mvm->scan_cmd, }, 2308 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2309 }; 2310 struct iwl_mvm_scan_params params = {}; 2311 int ret; 2312 2313 lockdep_assert_held(&mvm->mutex); 2314 2315 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2316 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2317 return -EBUSY; 2318 } 2319 2320 ret = iwl_mvm_check_running_scans(mvm, type); 2321 if (ret) 2322 return ret; 2323 2324 /* we should have failed registration if scan_cmd was NULL */ 2325 if (WARN_ON(!mvm->scan_cmd)) 2326 return -ENOMEM; 2327 2328 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2329 return -ENOBUFS; 2330 2331 params.n_ssids = req->n_ssids; 2332 params.flags = req->flags; 2333 params.n_channels = req->n_channels; 2334 params.ssids = req->ssids; 2335 params.channels = req->channels; 2336 params.mac_addr = req->mac_addr; 2337 params.mac_addr_mask = req->mac_addr_mask; 2338 params.no_cck = false; 2339 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2340 params.n_match_sets = req->n_match_sets; 2341 params.match_sets = req->match_sets; 2342 if (!req->n_scan_plans) 2343 return -EINVAL; 2344 2345 params.n_scan_plans = req->n_scan_plans; 2346 params.scan_plans = req->scan_plans; 2347 2348 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2349 2350 /* In theory, LMAC scans can handle a 32-bit delay, but since 2351 * waiting for over 18 hours to start the scan is a bit silly 2352 * and to keep it aligned with UMAC scans (which only support 2353 * 16-bit delays), trim it down to 16-bits. 2354 */ 2355 if (req->delay > U16_MAX) { 2356 IWL_DEBUG_SCAN(mvm, 2357 "delay value is > 16-bits, set to max possible\n"); 2358 params.delay = U16_MAX; 2359 } else { 2360 params.delay = req->delay; 2361 } 2362 2363 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2364 if (ret) 2365 return ret; 2366 2367 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2368 2369 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2370 2371 if (ret) 2372 return ret; 2373 2374 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2375 if (!ret) { 2376 IWL_DEBUG_SCAN(mvm, 2377 "Sched scan request was sent successfully\n"); 2378 mvm->scan_status |= type; 2379 } else { 2380 /* If the scan failed, it usually means that the FW was unable 2381 * to allocate the time events. Warn on it, but maybe we 2382 * should try to send the command again with different params. 2383 */ 2384 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2385 } 2386 2387 return ret; 2388 } 2389 2390 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2391 struct iwl_rx_cmd_buffer *rxb) 2392 { 2393 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2394 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2395 u32 uid = __le32_to_cpu(notif->uid); 2396 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2397 2398 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2399 return; 2400 2401 /* if the scan is already stopping, we don't need to notify mac80211 */ 2402 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2403 struct cfg80211_scan_info info = { 2404 .aborted = aborted, 2405 .scan_start_tsf = mvm->scan_start, 2406 }; 2407 2408 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2409 ieee80211_scan_completed(mvm->hw, &info); 2410 mvm->scan_vif = NULL; 2411 cancel_delayed_work(&mvm->scan_timeout_dwork); 2412 iwl_mvm_resume_tcm(mvm); 2413 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2414 ieee80211_sched_scan_stopped(mvm->hw); 2415 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2416 } 2417 2418 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2419 IWL_DEBUG_SCAN(mvm, 2420 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2421 uid, mvm->scan_uid_status[uid], 2422 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2423 "completed" : "aborted", 2424 iwl_mvm_ebs_status_str(notif->ebs_status)); 2425 IWL_DEBUG_SCAN(mvm, 2426 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2427 notif->last_schedule, notif->last_iter, 2428 __le32_to_cpu(notif->time_from_last_iter)); 2429 2430 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2431 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2432 mvm->last_ebs_successful = false; 2433 2434 mvm->scan_uid_status[uid] = 0; 2435 } 2436 2437 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2438 struct iwl_rx_cmd_buffer *rxb) 2439 { 2440 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2441 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2442 2443 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2444 2445 IWL_DEBUG_SCAN(mvm, 2446 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2447 notif->status, notif->scanned_channels); 2448 2449 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2450 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2451 ieee80211_sched_scan_results(mvm->hw); 2452 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2453 } 2454 2455 IWL_DEBUG_SCAN(mvm, 2456 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2457 mvm->scan_start); 2458 } 2459 2460 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2461 { 2462 struct iwl_umac_scan_abort cmd = {}; 2463 int uid, ret; 2464 2465 lockdep_assert_held(&mvm->mutex); 2466 2467 /* We should always get a valid index here, because we already 2468 * checked that this type of scan was running in the generic 2469 * code. 2470 */ 2471 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2472 if (WARN_ON_ONCE(uid < 0)) 2473 return uid; 2474 2475 cmd.uid = cpu_to_le32(uid); 2476 2477 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2478 2479 ret = iwl_mvm_send_cmd_pdu(mvm, 2480 iwl_cmd_id(SCAN_ABORT_UMAC, 2481 IWL_ALWAYS_LONG_GROUP, 0), 2482 0, sizeof(cmd), &cmd); 2483 if (!ret) 2484 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2485 2486 return ret; 2487 } 2488 2489 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2490 { 2491 struct iwl_notification_wait wait_scan_done; 2492 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2493 SCAN_OFFLOAD_COMPLETE, }; 2494 int ret; 2495 2496 lockdep_assert_held(&mvm->mutex); 2497 2498 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2499 scan_done_notif, 2500 ARRAY_SIZE(scan_done_notif), 2501 NULL, NULL); 2502 2503 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2504 2505 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2506 ret = iwl_mvm_umac_scan_abort(mvm, type); 2507 else 2508 ret = iwl_mvm_lmac_scan_abort(mvm); 2509 2510 if (ret) { 2511 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2512 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2513 return ret; 2514 } 2515 2516 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2517 1 * HZ); 2518 } 2519 2520 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ 2521 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ 2522 } 2523 2524 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2525 { 2526 switch (scan_ver) { 2527 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14); 2528 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); 2529 } 2530 2531 return 0; 2532 } 2533 2534 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2535 { 2536 int base_size, tail_size; 2537 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2538 SCAN_REQ_UMAC, 2539 IWL_FW_CMD_VER_UNKNOWN); 2540 2541 base_size = iwl_scan_req_umac_get_size(scan_ver); 2542 if (base_size) 2543 return base_size; 2544 2545 2546 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2547 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2548 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2549 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2550 else if (iwl_mvm_cdb_scan_api(mvm)) 2551 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2552 else 2553 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2554 2555 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2556 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2557 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2558 else 2559 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2560 2561 return base_size + 2562 sizeof(struct iwl_scan_channel_cfg_umac) * 2563 mvm->fw->ucode_capa.n_scan_channels + 2564 tail_size; 2565 } 2566 return sizeof(struct iwl_scan_req_lmac) + 2567 sizeof(struct iwl_scan_channel_cfg_lmac) * 2568 mvm->fw->ucode_capa.n_scan_channels + 2569 sizeof(struct iwl_scan_probe_req_v1); 2570 } 2571 2572 /* 2573 * This function is used in nic restart flow, to inform mac80211 about scans 2574 * that was aborted by restart flow or by an assert. 2575 */ 2576 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2577 { 2578 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2579 int uid, i; 2580 2581 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2582 if (uid >= 0) { 2583 struct cfg80211_scan_info info = { 2584 .aborted = true, 2585 }; 2586 2587 ieee80211_scan_completed(mvm->hw, &info); 2588 mvm->scan_uid_status[uid] = 0; 2589 } 2590 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2591 if (uid >= 0 && !mvm->fw_restart) { 2592 ieee80211_sched_scan_stopped(mvm->hw); 2593 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2594 mvm->scan_uid_status[uid] = 0; 2595 } 2596 uid = iwl_mvm_scan_uid_by_status(mvm, 2597 IWL_MVM_SCAN_STOPPING_REGULAR); 2598 if (uid >= 0) 2599 mvm->scan_uid_status[uid] = 0; 2600 2601 uid = iwl_mvm_scan_uid_by_status(mvm, 2602 IWL_MVM_SCAN_STOPPING_SCHED); 2603 if (uid >= 0) 2604 mvm->scan_uid_status[uid] = 0; 2605 2606 /* We shouldn't have any UIDs still set. Loop over all the 2607 * UIDs to make sure there's nothing left there and warn if 2608 * any is found. 2609 */ 2610 for (i = 0; i < mvm->max_scans; i++) { 2611 if (WARN_ONCE(mvm->scan_uid_status[i], 2612 "UMAC scan UID %d status was not cleaned\n", 2613 i)) 2614 mvm->scan_uid_status[i] = 0; 2615 } 2616 } else { 2617 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2618 struct cfg80211_scan_info info = { 2619 .aborted = true, 2620 }; 2621 2622 ieee80211_scan_completed(mvm->hw, &info); 2623 } 2624 2625 /* Sched scan will be restarted by mac80211 in 2626 * restart_hw, so do not report if FW is about to be 2627 * restarted. 2628 */ 2629 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2630 !mvm->fw_restart) { 2631 ieee80211_sched_scan_stopped(mvm->hw); 2632 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2633 } 2634 } 2635 } 2636 2637 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2638 { 2639 int ret; 2640 2641 if (!(mvm->scan_status & type)) 2642 return 0; 2643 2644 if (iwl_mvm_is_radio_killed(mvm)) { 2645 ret = 0; 2646 goto out; 2647 } 2648 2649 ret = iwl_mvm_scan_stop_wait(mvm, type); 2650 if (!ret) 2651 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2652 out: 2653 /* Clear the scan status so the next scan requests will 2654 * succeed and mark the scan as stopping, so that the Rx 2655 * handler doesn't do anything, as the scan was stopped from 2656 * above. 2657 */ 2658 mvm->scan_status &= ~type; 2659 2660 if (type == IWL_MVM_SCAN_REGULAR) { 2661 cancel_delayed_work(&mvm->scan_timeout_dwork); 2662 if (notify) { 2663 struct cfg80211_scan_info info = { 2664 .aborted = true, 2665 }; 2666 2667 ieee80211_scan_completed(mvm->hw, &info); 2668 } 2669 } else if (notify) { 2670 ieee80211_sched_scan_stopped(mvm->hw); 2671 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2672 } 2673 2674 return ret; 2675 } 2676