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); 701 702 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 703 ADD_STA, 704 0) < 12) { 705 tx_cmd[0].sta_id = mvm->aux_sta.sta_id; 706 tx_cmd[1].sta_id = mvm->aux_sta.sta_id; 707 708 /* 709 * Fw doesn't use this sta anymore, pending deprecation via HOST API 710 * change 711 */ 712 } else { 713 tx_cmd[0].sta_id = 0xff; 714 tx_cmd[1].sta_id = 0xff; 715 } 716 717 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | 718 TX_CMD_FLG_BT_DIS); 719 720 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, 721 NL80211_BAND_5GHZ, 722 no_cck); 723 } 724 725 static void 726 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, 727 struct ieee80211_channel **channels, 728 int n_channels, u32 ssid_bitmap, 729 struct iwl_scan_req_lmac *cmd) 730 { 731 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; 732 int i; 733 734 for (i = 0; i < n_channels; i++) { 735 channel_cfg[i].channel_num = 736 cpu_to_le16(channels[i]->hw_value); 737 channel_cfg[i].iter_count = cpu_to_le16(1); 738 channel_cfg[i].iter_interval = 0; 739 channel_cfg[i].flags = 740 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | 741 ssid_bitmap); 742 } 743 } 744 745 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, 746 size_t len, u8 *const pos) 747 { 748 static const u8 before_ds_params[] = { 749 WLAN_EID_SSID, 750 WLAN_EID_SUPP_RATES, 751 WLAN_EID_REQUEST, 752 WLAN_EID_EXT_SUPP_RATES, 753 }; 754 size_t offs; 755 u8 *newpos = pos; 756 757 if (!iwl_mvm_rrm_scan_needed(mvm)) { 758 memcpy(newpos, ies, len); 759 return newpos + len; 760 } 761 762 offs = ieee80211_ie_split(ies, len, 763 before_ds_params, 764 ARRAY_SIZE(before_ds_params), 765 0); 766 767 memcpy(newpos, ies, offs); 768 newpos += offs; 769 770 /* Add a placeholder for DS Parameter Set element */ 771 *newpos++ = WLAN_EID_DS_PARAMS; 772 *newpos++ = 1; 773 *newpos++ = 0; 774 775 memcpy(newpos, ies + offs, len - offs); 776 newpos += len - offs; 777 778 return newpos; 779 } 780 781 #define WFA_TPC_IE_LEN 9 782 783 static void iwl_mvm_add_tpc_report_ie(u8 *pos) 784 { 785 pos[0] = WLAN_EID_VENDOR_SPECIFIC; 786 pos[1] = WFA_TPC_IE_LEN - 2; 787 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; 788 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; 789 pos[4] = WLAN_OUI_MICROSOFT & 0xff; 790 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; 791 pos[6] = 0; 792 /* pos[7] - tx power will be inserted by the FW */ 793 pos[7] = 0; 794 pos[8] = 0; 795 } 796 797 static void 798 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 799 struct ieee80211_scan_ies *ies, 800 struct iwl_mvm_scan_params *params) 801 { 802 struct ieee80211_mgmt *frame = (void *)params->preq.buf; 803 u8 *pos, *newpos; 804 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? 805 params->mac_addr : NULL; 806 807 /* 808 * Unfortunately, right now the offload scan doesn't support randomising 809 * within the firmware, so until the firmware API is ready we implement 810 * it in the driver. This means that the scan iterations won't really be 811 * random, only when it's restarted, but at least that helps a bit. 812 */ 813 if (mac_addr) 814 get_random_mask_addr(frame->sa, mac_addr, 815 params->mac_addr_mask); 816 else 817 memcpy(frame->sa, vif->addr, ETH_ALEN); 818 819 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); 820 eth_broadcast_addr(frame->da); 821 eth_broadcast_addr(frame->bssid); 822 frame->seq_ctrl = 0; 823 824 pos = frame->u.probe_req.variable; 825 *pos++ = WLAN_EID_SSID; 826 *pos++ = 0; 827 828 params->preq.mac_header.offset = 0; 829 params->preq.mac_header.len = cpu_to_le16(24 + 2); 830 831 /* Insert ds parameter set element on 2.4 GHz band */ 832 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, 833 ies->ies[NL80211_BAND_2GHZ], 834 ies->len[NL80211_BAND_2GHZ], 835 pos); 836 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); 837 params->preq.band_data[0].len = cpu_to_le16(newpos - pos); 838 pos = newpos; 839 840 memcpy(pos, ies->ies[NL80211_BAND_5GHZ], 841 ies->len[NL80211_BAND_5GHZ]); 842 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); 843 params->preq.band_data[1].len = 844 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); 845 pos += ies->len[NL80211_BAND_5GHZ]; 846 847 memcpy(pos, ies->common_ies, ies->common_ie_len); 848 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); 849 850 if (iwl_mvm_rrm_scan_needed(mvm) && 851 !fw_has_capa(&mvm->fw->ucode_capa, 852 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { 853 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); 854 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + 855 WFA_TPC_IE_LEN); 856 } else { 857 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); 858 } 859 } 860 861 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, 862 struct iwl_scan_req_lmac *cmd, 863 struct iwl_mvm_scan_params *params) 864 { 865 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; 866 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; 867 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 868 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; 869 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); 870 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); 871 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 872 } 873 874 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, 875 struct ieee80211_scan_ies *ies, 876 int n_channels) 877 { 878 return ((n_ssids <= PROBE_OPTION_MAX) && 879 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & 880 (ies->common_ie_len + 881 ies->len[NL80211_BAND_2GHZ] + 882 ies->len[NL80211_BAND_5GHZ] <= 883 iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); 884 } 885 886 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, 887 struct ieee80211_vif *vif) 888 { 889 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; 890 bool low_latency; 891 892 if (iwl_mvm_is_cdb_supported(mvm)) 893 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); 894 else 895 low_latency = iwl_mvm_low_latency(mvm); 896 897 /* We can only use EBS if: 898 * 1. the feature is supported; 899 * 2. the last EBS was successful; 900 * 3. if only single scan, the single scan EBS API is supported; 901 * 4. it's not a p2p find operation. 902 * 5. we are not in low latency mode, 903 * or if fragmented ebs is supported by the FW 904 */ 905 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && 906 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && 907 vif->type != NL80211_IFTYPE_P2P_DEVICE && 908 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); 909 } 910 911 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) 912 { 913 return params->n_scan_plans == 1 && 914 params->scan_plans[0].iterations == 1; 915 } 916 917 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) 918 { 919 return (type == IWL_SCAN_TYPE_FRAGMENTED || 920 type == IWL_SCAN_TYPE_FAST_BALANCE); 921 } 922 923 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, 924 struct iwl_mvm_scan_params *params, 925 struct ieee80211_vif *vif) 926 { 927 int flags = 0; 928 929 if (params->n_ssids == 0) 930 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; 931 932 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 933 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; 934 935 if (iwl_mvm_is_scan_fragmented(params->type)) 936 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; 937 938 if (iwl_mvm_rrm_scan_needed(mvm) && 939 fw_has_capa(&mvm->fw->ucode_capa, 940 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 941 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; 942 943 if (params->pass_all) 944 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; 945 else 946 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; 947 948 #ifdef CONFIG_IWLWIFI_DEBUGFS 949 if (mvm->scan_iter_notif_enabled) 950 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 951 #endif 952 953 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 954 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; 955 956 if (iwl_mvm_is_regular_scan(params) && 957 vif->type != NL80211_IFTYPE_P2P_DEVICE && 958 !iwl_mvm_is_scan_fragmented(params->type)) 959 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; 960 961 return flags; 962 } 963 964 static void 965 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, 966 struct iwl_scan_probe_req *src_p_req) 967 { 968 int i; 969 970 p_req->mac_header = src_p_req->mac_header; 971 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) 972 p_req->band_data[i] = src_p_req->band_data[i]; 973 p_req->common_data = src_p_req->common_data; 974 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); 975 } 976 977 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 978 struct iwl_mvm_scan_params *params) 979 { 980 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; 981 struct iwl_scan_probe_req_v1 *preq = 982 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * 983 mvm->fw->ucode_capa.n_scan_channels); 984 u32 ssid_bitmap = 0; 985 int i; 986 u8 band; 987 988 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 989 return -EINVAL; 990 991 iwl_mvm_scan_lmac_dwell(mvm, cmd, params); 992 993 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); 994 cmd->iter_num = cpu_to_le32(1); 995 cmd->n_channels = (u8)params->n_channels; 996 997 cmd->delay = cpu_to_le32(params->delay); 998 999 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, 1000 vif)); 1001 1002 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); 1003 cmd->flags = cpu_to_le32(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 /* This function should not be called when using ADD_STA ver >=12 */ 1135 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1136 ADD_STA, 0) >= 12); 1137 1138 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1139 cfg->channel_flags = channel_flags; 1140 1141 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1142 } 1143 1144 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, 1145 u32 flags, u8 channel_flags, 1146 u32 max_channels) 1147 { 1148 struct iwl_scan_config_v2 *cfg = config; 1149 1150 cfg->flags = cpu_to_le32(flags); 1151 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1152 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1153 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); 1154 1155 if (iwl_mvm_is_cdb_supported(mvm)) { 1156 enum iwl_mvm_scan_type lb_type, hb_type; 1157 1158 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1159 NL80211_BAND_2GHZ); 1160 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1161 NL80211_BAND_5GHZ); 1162 1163 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1164 cpu_to_le32(scan_timing[lb_type].max_out_time); 1165 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1166 cpu_to_le32(scan_timing[lb_type].suspend_time); 1167 1168 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = 1169 cpu_to_le32(scan_timing[hb_type].max_out_time); 1170 cfg->suspend_time[SCAN_HB_LMAC_IDX] = 1171 cpu_to_le32(scan_timing[hb_type].suspend_time); 1172 } else { 1173 enum iwl_mvm_scan_type type = 1174 iwl_mvm_get_scan_type(mvm, NULL); 1175 1176 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = 1177 cpu_to_le32(scan_timing[type].max_out_time); 1178 cfg->suspend_time[SCAN_LB_LMAC_IDX] = 1179 cpu_to_le32(scan_timing[type].suspend_time); 1180 } 1181 1182 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); 1183 1184 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); 1185 1186 /* This function should not be called when using ADD_STA ver >=12 */ 1187 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1188 ADD_STA, 0) >= 12); 1189 1190 cfg->bcast_sta_id = mvm->aux_sta.sta_id; 1191 cfg->channel_flags = channel_flags; 1192 1193 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); 1194 } 1195 1196 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) 1197 { 1198 void *cfg; 1199 int ret, cmd_size; 1200 struct iwl_host_cmd cmd = { 1201 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1202 }; 1203 enum iwl_mvm_scan_type type; 1204 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; 1205 int num_channels = 1206 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + 1207 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; 1208 u32 flags; 1209 u8 channel_flags; 1210 1211 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) 1212 num_channels = mvm->fw->ucode_capa.n_scan_channels; 1213 1214 if (iwl_mvm_is_cdb_supported(mvm)) { 1215 type = iwl_mvm_get_scan_type_band(mvm, NULL, 1216 NL80211_BAND_2GHZ); 1217 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, 1218 NL80211_BAND_5GHZ); 1219 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) 1220 return 0; 1221 } else { 1222 type = iwl_mvm_get_scan_type(mvm, NULL); 1223 if (type == mvm->scan_type) 1224 return 0; 1225 } 1226 1227 if (iwl_mvm_cdb_scan_api(mvm)) 1228 cmd_size = sizeof(struct iwl_scan_config_v2); 1229 else 1230 cmd_size = sizeof(struct iwl_scan_config_v1); 1231 cmd_size += mvm->fw->ucode_capa.n_scan_channels; 1232 1233 cfg = kzalloc(cmd_size, GFP_KERNEL); 1234 if (!cfg) 1235 return -ENOMEM; 1236 1237 flags = SCAN_CONFIG_FLAG_ACTIVATE | 1238 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | 1239 SCAN_CONFIG_FLAG_SET_TX_CHAINS | 1240 SCAN_CONFIG_FLAG_SET_RX_CHAINS | 1241 SCAN_CONFIG_FLAG_SET_AUX_STA_ID | 1242 SCAN_CONFIG_FLAG_SET_ALL_TIMES | 1243 SCAN_CONFIG_FLAG_SET_LEGACY_RATES | 1244 SCAN_CONFIG_FLAG_SET_MAC_ADDR | 1245 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | 1246 SCAN_CONFIG_N_CHANNELS(num_channels) | 1247 (iwl_mvm_is_scan_fragmented(type) ? 1248 SCAN_CONFIG_FLAG_SET_FRAGMENTED : 1249 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); 1250 1251 channel_flags = IWL_CHANNEL_FLAG_EBS | 1252 IWL_CHANNEL_FLAG_ACCURATE_EBS | 1253 IWL_CHANNEL_FLAG_EBS_ADD | 1254 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; 1255 1256 /* 1257 * Check for fragmented scan on LMAC2 - high band. 1258 * LMAC1 - low band is checked above. 1259 */ 1260 if (iwl_mvm_cdb_scan_api(mvm)) { 1261 if (iwl_mvm_is_cdb_supported(mvm)) 1262 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? 1263 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : 1264 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; 1265 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, 1266 num_channels); 1267 } else { 1268 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, 1269 num_channels); 1270 } 1271 1272 cmd.data[0] = cfg; 1273 cmd.len[0] = cmd_size; 1274 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; 1275 1276 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1277 1278 ret = iwl_mvm_send_cmd(mvm, &cmd); 1279 if (!ret) { 1280 mvm->scan_type = type; 1281 mvm->hb_scan_type = hb_type; 1282 } 1283 1284 kfree(cfg); 1285 return ret; 1286 } 1287 1288 int iwl_mvm_config_scan(struct iwl_mvm *mvm) 1289 { 1290 struct iwl_scan_config cfg; 1291 struct iwl_host_cmd cmd = { 1292 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), 1293 .len[0] = sizeof(cfg), 1294 .data[0] = &cfg, 1295 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1296 }; 1297 1298 if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) 1299 return iwl_mvm_legacy_config_scan(mvm); 1300 1301 memset(&cfg, 0, sizeof(cfg)); 1302 1303 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, 1304 ADD_STA, 0) < 12) 1305 cfg.bcast_sta_id = mvm->aux_sta.sta_id; 1306 /* 1307 * Fw doesn't use this sta anymore, pending deprecation via HOST API 1308 * change. 1309 */ 1310 else 1311 cfg.bcast_sta_id = 0xff; 1312 1313 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); 1314 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); 1315 1316 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); 1317 1318 return iwl_mvm_send_cmd(mvm, &cmd); 1319 } 1320 1321 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) 1322 { 1323 int i; 1324 1325 for (i = 0; i < mvm->max_scans; i++) 1326 if (mvm->scan_uid_status[i] == status) 1327 return i; 1328 1329 return -ENOENT; 1330 } 1331 1332 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, 1333 struct iwl_scan_req_umac *cmd, 1334 struct iwl_mvm_scan_params *params) 1335 { 1336 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1337 u8 active_dwell, passive_dwell; 1338 1339 timing = &scan_timing[params->type]; 1340 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1341 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1342 1343 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { 1344 cmd->v7.adwell_default_n_aps_social = 1345 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1346 cmd->v7.adwell_default_n_aps = 1347 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1348 1349 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) 1350 cmd->v9.adwell_default_hb_n_aps = 1351 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1352 1353 /* if custom max budget was configured with debugfs */ 1354 if (IWL_MVM_ADWELL_MAX_BUDGET) 1355 cmd->v7.adwell_max_budget = 1356 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1357 else if (params->ssids && params->ssids[0].ssid_len) 1358 cmd->v7.adwell_max_budget = 1359 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1360 else 1361 cmd->v7.adwell_max_budget = 1362 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1363 1364 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1365 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = 1366 cpu_to_le32(timing->max_out_time); 1367 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = 1368 cpu_to_le32(timing->suspend_time); 1369 1370 if (iwl_mvm_is_cdb_supported(mvm)) { 1371 hb_timing = &scan_timing[params->hb_type]; 1372 1373 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = 1374 cpu_to_le32(hb_timing->max_out_time); 1375 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = 1376 cpu_to_le32(hb_timing->suspend_time); 1377 } 1378 1379 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1380 cmd->v7.active_dwell = active_dwell; 1381 cmd->v7.passive_dwell = passive_dwell; 1382 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1383 } else { 1384 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1385 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1386 if (iwl_mvm_is_cdb_supported(mvm)) { 1387 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = 1388 active_dwell; 1389 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = 1390 passive_dwell; 1391 } 1392 } 1393 } else { 1394 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED; 1395 cmd->v1.active_dwell = active_dwell; 1396 cmd->v1.passive_dwell = passive_dwell; 1397 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; 1398 1399 if (iwl_mvm_is_cdb_supported(mvm)) { 1400 hb_timing = &scan_timing[params->hb_type]; 1401 1402 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = 1403 cpu_to_le32(hb_timing->max_out_time); 1404 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = 1405 cpu_to_le32(hb_timing->suspend_time); 1406 } 1407 1408 if (iwl_mvm_cdb_scan_api(mvm)) { 1409 cmd->v6.scan_priority = 1410 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1411 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = 1412 cpu_to_le32(timing->max_out_time); 1413 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = 1414 cpu_to_le32(timing->suspend_time); 1415 } else { 1416 cmd->v1.scan_priority = 1417 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1418 cmd->v1.max_out_time = 1419 cpu_to_le32(timing->max_out_time); 1420 cmd->v1.suspend_time = 1421 cpu_to_le32(timing->suspend_time); 1422 } 1423 } 1424 1425 if (iwl_mvm_is_regular_scan(params)) 1426 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1427 else 1428 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); 1429 } 1430 1431 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) 1432 { 1433 return iwl_mvm_is_regular_scan(params) ? 1434 IWL_SCAN_PRIORITY_EXT_6 : 1435 IWL_SCAN_PRIORITY_EXT_2; 1436 } 1437 1438 static void 1439 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, 1440 struct iwl_scan_general_params_v10 *general_params, 1441 struct iwl_mvm_scan_params *params) 1442 { 1443 struct iwl_mvm_scan_timing_params *timing, *hb_timing; 1444 u8 active_dwell, passive_dwell; 1445 1446 timing = &scan_timing[params->type]; 1447 active_dwell = IWL_SCAN_DWELL_ACTIVE; 1448 passive_dwell = IWL_SCAN_DWELL_PASSIVE; 1449 1450 general_params->adwell_default_social_chn = 1451 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; 1452 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; 1453 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; 1454 1455 /* if custom max budget was configured with debugfs */ 1456 if (IWL_MVM_ADWELL_MAX_BUDGET) 1457 general_params->adwell_max_budget = 1458 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); 1459 else if (params->ssids && params->ssids[0].ssid_len) 1460 general_params->adwell_max_budget = 1461 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); 1462 else 1463 general_params->adwell_max_budget = 1464 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); 1465 1466 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); 1467 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = 1468 cpu_to_le32(timing->max_out_time); 1469 general_params->suspend_time[SCAN_LB_LMAC_IDX] = 1470 cpu_to_le32(timing->suspend_time); 1471 1472 hb_timing = &scan_timing[params->hb_type]; 1473 1474 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = 1475 cpu_to_le32(hb_timing->max_out_time); 1476 general_params->suspend_time[SCAN_HB_LMAC_IDX] = 1477 cpu_to_le32(hb_timing->suspend_time); 1478 1479 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; 1480 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; 1481 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; 1482 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; 1483 } 1484 1485 struct iwl_mvm_scan_channel_segment { 1486 u8 start_idx; 1487 u8 end_idx; 1488 u8 first_channel_id; 1489 u8 last_channel_id; 1490 u8 channel_spacing_shift; 1491 u8 band; 1492 }; 1493 1494 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { 1495 { 1496 .start_idx = 0, 1497 .end_idx = 13, 1498 .first_channel_id = 1, 1499 .last_channel_id = 14, 1500 .channel_spacing_shift = 0, 1501 .band = PHY_BAND_24 1502 }, 1503 { 1504 .start_idx = 14, 1505 .end_idx = 41, 1506 .first_channel_id = 36, 1507 .last_channel_id = 144, 1508 .channel_spacing_shift = 2, 1509 .band = PHY_BAND_5 1510 }, 1511 { 1512 .start_idx = 42, 1513 .end_idx = 50, 1514 .first_channel_id = 149, 1515 .last_channel_id = 181, 1516 .channel_spacing_shift = 2, 1517 .band = PHY_BAND_5 1518 }, 1519 }; 1520 1521 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) 1522 { 1523 int i, index; 1524 1525 if (!channel_id) 1526 return -EINVAL; 1527 1528 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { 1529 const struct iwl_mvm_scan_channel_segment *ch_segment = 1530 &scan_channel_segments[i]; 1531 u32 ch_offset; 1532 1533 if (ch_segment->band != band || 1534 ch_segment->first_channel_id > channel_id || 1535 ch_segment->last_channel_id < channel_id) 1536 continue; 1537 1538 ch_offset = (channel_id - ch_segment->first_channel_id) >> 1539 ch_segment->channel_spacing_shift; 1540 1541 index = scan_channel_segments[i].start_idx + ch_offset; 1542 if (index < IWL_SCAN_NUM_CHANNELS) 1543 return index; 1544 1545 break; 1546 } 1547 1548 return -EINVAL; 1549 } 1550 1551 static const u8 p2p_go_friendly_chs[] = { 1552 36, 40, 44, 48, 149, 153, 157, 161, 165, 1553 }; 1554 1555 static const u8 social_chs[] = { 1556 1, 6, 11 1557 }; 1558 1559 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, 1560 u8 ch_id, u8 band, u8 *ch_bitmap, 1561 size_t bitmap_n_entries) 1562 { 1563 int i; 1564 1565 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1566 return; 1567 1568 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1569 if (p2p_go_friendly_chs[i] == ch_id) { 1570 int ch_idx, bitmap_idx; 1571 1572 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); 1573 if (ch_idx < 0) 1574 return; 1575 1576 bitmap_idx = ch_idx / 8; 1577 if (bitmap_idx >= bitmap_n_entries) 1578 return; 1579 1580 ch_idx = ch_idx % 8; 1581 ch_bitmap[bitmap_idx] |= BIT(ch_idx); 1582 1583 return; 1584 } 1585 } 1586 } 1587 1588 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) 1589 { 1590 int i; 1591 u32 flags = 0; 1592 1593 if (vif_type != NL80211_IFTYPE_P2P_DEVICE) 1594 goto out; 1595 1596 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { 1597 if (p2p_go_friendly_chs[i] == ch_id) { 1598 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; 1599 break; 1600 } 1601 } 1602 1603 if (flags) 1604 goto out; 1605 1606 for (i = 0; i < ARRAY_SIZE(social_chs); i++) { 1607 if (social_chs[i] == ch_id) { 1608 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; 1609 break; 1610 } 1611 } 1612 1613 out: 1614 return flags; 1615 } 1616 1617 static void 1618 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, 1619 struct ieee80211_channel **channels, 1620 int n_channels, u32 flags, 1621 struct iwl_scan_channel_cfg_umac *channel_cfg) 1622 { 1623 int i; 1624 1625 for (i = 0; i < n_channels; i++) { 1626 channel_cfg[i].flags = cpu_to_le32(flags); 1627 channel_cfg[i].v1.channel_num = channels[i]->hw_value; 1628 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1629 enum nl80211_band band = channels[i]->band; 1630 1631 channel_cfg[i].v2.band = 1632 iwl_mvm_phy_band_from_nl80211(band); 1633 channel_cfg[i].v2.iter_count = 1; 1634 channel_cfg[i].v2.iter_interval = 0; 1635 } else { 1636 channel_cfg[i].v1.iter_count = 1; 1637 channel_cfg[i].v1.iter_interval = 0; 1638 } 1639 } 1640 } 1641 1642 static void 1643 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, 1644 struct ieee80211_channel **channels, 1645 struct iwl_scan_channel_params_v4 *cp, 1646 int n_channels, u32 flags, 1647 enum nl80211_iftype vif_type) 1648 { 1649 u8 *bitmap = cp->adwell_ch_override_bitmap; 1650 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); 1651 int i; 1652 1653 for (i = 0; i < n_channels; i++) { 1654 enum nl80211_band band = channels[i]->band; 1655 struct iwl_scan_channel_cfg_umac *cfg = 1656 &cp->channel_config[i]; 1657 1658 cfg->flags = cpu_to_le32(flags); 1659 cfg->v2.channel_num = channels[i]->hw_value; 1660 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1661 cfg->v2.iter_count = 1; 1662 cfg->v2.iter_interval = 0; 1663 1664 iwl_mvm_scan_ch_add_n_aps_override(vif_type, 1665 cfg->v2.channel_num, 1666 cfg->v2.band, bitmap, 1667 bitmap_n_entries); 1668 } 1669 } 1670 1671 static void 1672 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm, 1673 struct ieee80211_channel **channels, 1674 struct iwl_scan_channel_params_v6 *cp, 1675 int n_channels, u32 flags, 1676 enum nl80211_iftype vif_type) 1677 { 1678 int i; 1679 1680 for (i = 0; i < n_channels; i++) { 1681 enum nl80211_band band = channels[i]->band; 1682 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i]; 1683 u32 n_aps_flag = 1684 iwl_mvm_scan_ch_n_aps_flag(vif_type, 1685 cfg->v2.channel_num); 1686 1687 cfg->flags = cpu_to_le32(flags | n_aps_flag); 1688 cfg->v2.channel_num = channels[i]->hw_value; 1689 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); 1690 cfg->v2.iter_count = 1; 1691 cfg->v2.iter_interval = 0; 1692 } 1693 } 1694 1695 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 1696 struct iwl_mvm_scan_params *params, 1697 struct ieee80211_vif *vif) 1698 { 1699 u8 flags = 0; 1700 1701 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; 1702 1703 if (iwl_mvm_scan_use_ebs(mvm, vif)) 1704 flags |= IWL_SCAN_CHANNEL_FLAG_EBS | 1705 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1706 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1707 1708 /* set fragmented ebs for fragmented scan on HB channels */ 1709 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1710 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1711 1712 return flags; 1713 } 1714 1715 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 1716 struct iwl_mvm_scan_params *params, 1717 struct ieee80211_vif *vif, 1718 int type) 1719 { 1720 u16 flags = 0; 1721 1722 if (params->n_ssids == 0) 1723 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; 1724 1725 if (iwl_mvm_is_scan_fragmented(params->type)) 1726 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; 1727 1728 if (iwl_mvm_is_scan_fragmented(params->hb_type)) 1729 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; 1730 1731 if (params->pass_all) 1732 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; 1733 else 1734 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; 1735 1736 if (!iwl_mvm_is_regular_scan(params)) 1737 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; 1738 1739 if (params->iter_notif || 1740 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1741 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; 1742 1743 if (IWL_MVM_ADWELL_ENABLE) 1744 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; 1745 1746 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1747 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; 1748 1749 return flags; 1750 } 1751 1752 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, 1753 struct iwl_mvm_scan_params *params, 1754 struct ieee80211_vif *vif) 1755 { 1756 u16 flags = 0; 1757 1758 if (params->n_ssids == 0) 1759 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; 1760 1761 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) 1762 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; 1763 1764 if (iwl_mvm_is_scan_fragmented(params->type)) 1765 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; 1766 1767 if (iwl_mvm_is_cdb_supported(mvm) && 1768 iwl_mvm_is_scan_fragmented(params->hb_type)) 1769 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; 1770 1771 if (iwl_mvm_rrm_scan_needed(mvm) && 1772 fw_has_capa(&mvm->fw->ucode_capa, 1773 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 1774 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; 1775 1776 if (params->pass_all) 1777 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; 1778 else 1779 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; 1780 1781 if (!iwl_mvm_is_regular_scan(params)) 1782 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; 1783 1784 if (params->iter_notif) 1785 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1786 1787 #ifdef CONFIG_IWLWIFI_DEBUGFS 1788 if (mvm->scan_iter_notif_enabled) 1789 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1790 #endif 1791 1792 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) 1793 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; 1794 1795 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) 1796 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; 1797 1798 /* 1799 * Extended dwell is relevant only for low band to start with, as it is 1800 * being used for social channles only (1, 6, 11), so we can check 1801 * only scan type on low band also for CDB. 1802 */ 1803 if (iwl_mvm_is_regular_scan(params) && 1804 vif->type != NL80211_IFTYPE_P2P_DEVICE && 1805 !iwl_mvm_is_scan_fragmented(params->type) && 1806 !iwl_mvm_is_adaptive_dwell_supported(mvm) && 1807 !iwl_mvm_is_oce_supported(mvm)) 1808 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; 1809 1810 if (iwl_mvm_is_oce_supported(mvm)) { 1811 if ((params->flags & 1812 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) 1813 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; 1814 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and 1815 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares 1816 * the same bit, we need to make sure that we use this bit here 1817 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be 1818 * used. */ 1819 if ((params->flags & 1820 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 1821 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) 1822 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; 1823 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) 1824 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; 1825 } 1826 1827 return flags; 1828 } 1829 1830 static int 1831 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, 1832 struct iwl_scan_umac_schedule *schedule, 1833 __le16 *delay) 1834 { 1835 int i; 1836 if (WARN_ON(!params->n_scan_plans || 1837 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) 1838 return -EINVAL; 1839 1840 for (i = 0; i < params->n_scan_plans; i++) { 1841 struct cfg80211_sched_scan_plan *scan_plan = 1842 ¶ms->scan_plans[i]; 1843 1844 schedule[i].iter_count = scan_plan->iterations; 1845 schedule[i].interval = 1846 cpu_to_le16(scan_plan->interval); 1847 } 1848 1849 /* 1850 * If the number of iterations of the last scan plan is set to 1851 * zero, it should run infinitely. However, this is not always the case. 1852 * For example, when regular scan is requested the driver sets one scan 1853 * plan with one iteration. 1854 */ 1855 if (!schedule[params->n_scan_plans - 1].iter_count) 1856 schedule[params->n_scan_plans - 1].iter_count = 0xff; 1857 1858 *delay = cpu_to_le16(params->delay); 1859 1860 return 0; 1861 } 1862 1863 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1864 struct iwl_mvm_scan_params *params, 1865 int type, int uid) 1866 { 1867 struct iwl_scan_req_umac *cmd = mvm->scan_cmd; 1868 struct iwl_scan_umac_chan_param *chan_param; 1869 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); 1870 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * 1871 mvm->fw->ucode_capa.n_scan_channels; 1872 struct iwl_scan_req_umac_tail_v2 *tail_v2 = 1873 (struct iwl_scan_req_umac_tail_v2 *)sec_part; 1874 struct iwl_scan_req_umac_tail_v1 *tail_v1; 1875 struct iwl_ssid_ie *direct_scan; 1876 int ret = 0; 1877 u32 ssid_bitmap = 0; 1878 u8 channel_flags = 0; 1879 u16 gen_flags; 1880 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1881 1882 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); 1883 1884 iwl_mvm_scan_umac_dwell(mvm, cmd, params); 1885 1886 mvm->scan_uid_status[uid] = type; 1887 1888 cmd->uid = cpu_to_le32(uid); 1889 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); 1890 cmd->general_flags = cpu_to_le16(gen_flags); 1891 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { 1892 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) 1893 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = 1894 IWL_SCAN_NUM_OF_FRAGS; 1895 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) 1896 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = 1897 IWL_SCAN_NUM_OF_FRAGS; 1898 1899 cmd->v8.general_flags2 = 1900 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; 1901 } 1902 1903 cmd->scan_start_mac_id = scan_vif->id; 1904 1905 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) 1906 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); 1907 1908 if (iwl_mvm_scan_use_ebs(mvm, vif)) { 1909 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | 1910 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | 1911 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; 1912 1913 /* set fragmented ebs for fragmented scan on HB channels */ 1914 if (iwl_mvm_is_frag_ebs_supported(mvm)) { 1915 if (gen_flags & 1916 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || 1917 (!iwl_mvm_is_cdb_supported(mvm) && 1918 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) 1919 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; 1920 } 1921 } 1922 1923 chan_param->flags = channel_flags; 1924 chan_param->count = params->n_channels; 1925 1926 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, 1927 &tail_v2->delay); 1928 if (ret) 1929 return ret; 1930 1931 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { 1932 tail_v2->preq = params->preq; 1933 direct_scan = tail_v2->direct_scan; 1934 } else { 1935 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; 1936 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, 1937 ¶ms->preq); 1938 direct_scan = tail_v1->direct_scan; 1939 } 1940 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); 1941 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, 1942 params->n_channels, ssid_bitmap, 1943 cmd_data); 1944 return 0; 1945 } 1946 1947 static void 1948 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, 1949 struct iwl_mvm_scan_params *params, 1950 struct ieee80211_vif *vif, 1951 struct iwl_scan_general_params_v10 *gp, 1952 u16 gen_flags) 1953 { 1954 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); 1955 1956 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); 1957 1958 gp->flags = cpu_to_le16(gen_flags); 1959 1960 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) 1961 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 1962 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) 1963 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; 1964 1965 gp->scan_start_mac_id = scan_vif->id; 1966 } 1967 1968 static void 1969 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, 1970 struct iwl_scan_probe_params_v3 *pp) 1971 { 1972 pp->preq = params->preq; 1973 pp->ssid_num = params->n_ssids; 1974 iwl_scan_build_ssids(params, pp->direct_scan, NULL); 1975 } 1976 1977 static void 1978 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, 1979 struct iwl_scan_probe_params_v4 *pp, 1980 u32 *bitmap_ssid) 1981 { 1982 pp->preq = params->preq; 1983 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); 1984 } 1985 1986 static void 1987 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, 1988 struct iwl_mvm_scan_params *params, 1989 struct ieee80211_vif *vif, 1990 struct iwl_scan_channel_params_v4 *cp, 1991 u32 channel_cfg_flags) 1992 { 1993 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 1994 cp->count = params->n_channels; 1995 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 1996 1997 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, 1998 params->n_channels, 1999 channel_cfg_flags, 2000 vif->type); 2001 } 2002 2003 static void 2004 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, 2005 struct iwl_mvm_scan_params *params, 2006 struct ieee80211_vif *vif, 2007 struct iwl_scan_channel_params_v6 *cp, 2008 u32 channel_cfg_flags) 2009 { 2010 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); 2011 cp->count = params->n_channels; 2012 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; 2013 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; 2014 2015 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp, 2016 params->n_channels, 2017 channel_cfg_flags, 2018 vif->type); 2019 } 2020 2021 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2022 struct iwl_mvm_scan_params *params, int type, 2023 int uid) 2024 { 2025 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; 2026 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; 2027 int ret; 2028 u16 gen_flags; 2029 2030 mvm->scan_uid_status[uid] = type; 2031 2032 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2033 cmd->uid = cpu_to_le32(uid); 2034 2035 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2036 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2037 &scan_p->general_params, 2038 gen_flags); 2039 2040 ret = iwl_mvm_fill_scan_sched_params(params, 2041 scan_p->periodic_params.schedule, 2042 &scan_p->periodic_params.delay); 2043 if (ret) 2044 return ret; 2045 2046 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); 2047 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, 2048 &scan_p->channel_params, 0); 2049 2050 return 0; 2051 } 2052 2053 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2054 struct iwl_mvm_scan_params *params, int type, 2055 int uid) 2056 { 2057 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd; 2058 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params; 2059 int ret; 2060 u16 gen_flags; 2061 u32 bitmap_ssid = 0; 2062 2063 mvm->scan_uid_status[uid] = type; 2064 2065 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); 2066 cmd->uid = cpu_to_le32(uid); 2067 2068 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); 2069 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, 2070 &scan_p->general_params, 2071 gen_flags); 2072 2073 ret = iwl_mvm_fill_scan_sched_params(params, 2074 scan_p->periodic_params.schedule, 2075 &scan_p->periodic_params.delay); 2076 if (ret) 2077 return ret; 2078 2079 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, 2080 &bitmap_ssid); 2081 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif, 2082 &scan_p->channel_params, bitmap_ssid); 2083 2084 return 0; 2085 } 2086 2087 static int iwl_mvm_num_scans(struct iwl_mvm *mvm) 2088 { 2089 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); 2090 } 2091 2092 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) 2093 { 2094 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, 2095 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 2096 2097 /* This looks a bit arbitrary, but the idea is that if we run 2098 * out of possible simultaneous scans and the userspace is 2099 * trying to run a scan type that is already running, we 2100 * return -EBUSY. But if the userspace wants to start a 2101 * different type of scan, we stop the opposite type to make 2102 * space for the new request. The reason is backwards 2103 * compatibility with old wpa_supplicant that wouldn't stop a 2104 * scheduled scan before starting a normal scan. 2105 */ 2106 2107 /* FW supports only a single periodic scan */ 2108 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && 2109 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) 2110 return -EBUSY; 2111 2112 if (iwl_mvm_num_scans(mvm) < mvm->max_scans) 2113 return 0; 2114 2115 /* Use a switch, even though this is a bitmask, so that more 2116 * than one bits set will fall in default and we will warn. 2117 */ 2118 switch (type) { 2119 case IWL_MVM_SCAN_REGULAR: 2120 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2121 return -EBUSY; 2122 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2123 case IWL_MVM_SCAN_SCHED: 2124 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2125 return -EBUSY; 2126 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2127 case IWL_MVM_SCAN_NETDETECT: 2128 /* For non-unified images, there's no need to stop 2129 * anything for net-detect since the firmware is 2130 * restarted anyway. This way, any sched scans that 2131 * were running will be restarted when we resume. 2132 */ 2133 if (!unified_image) 2134 return 0; 2135 2136 /* If this is a unified image and we ran out of scans, 2137 * we need to stop something. Prefer stopping regular 2138 * scans, because the results are useless at this 2139 * point, and we should be able to keep running 2140 * another scheduled scan while suspended. 2141 */ 2142 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) 2143 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, 2144 true); 2145 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) 2146 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, 2147 true); 2148 /* Something is wrong if no scan was running but we 2149 * ran out of scans. 2150 */ 2151 /* fall through */ 2152 default: 2153 WARN_ON(1); 2154 break; 2155 } 2156 2157 return -EIO; 2158 } 2159 2160 #define SCAN_TIMEOUT 20000 2161 2162 void iwl_mvm_scan_timeout_wk(struct work_struct *work) 2163 { 2164 struct delayed_work *delayed_work = to_delayed_work(work); 2165 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, 2166 scan_timeout_dwork); 2167 2168 IWL_ERR(mvm, "regular scan timed out\n"); 2169 2170 iwl_force_nmi(mvm->trans); 2171 } 2172 2173 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, 2174 struct iwl_mvm_scan_params *params, 2175 struct ieee80211_vif *vif) 2176 { 2177 if (iwl_mvm_is_cdb_supported(mvm)) { 2178 params->type = 2179 iwl_mvm_get_scan_type_band(mvm, vif, 2180 NL80211_BAND_2GHZ); 2181 params->hb_type = 2182 iwl_mvm_get_scan_type_band(mvm, vif, 2183 NL80211_BAND_5GHZ); 2184 } else { 2185 params->type = iwl_mvm_get_scan_type(mvm, vif); 2186 } 2187 } 2188 2189 struct iwl_scan_umac_handler { 2190 u8 version; 2191 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2192 struct iwl_mvm_scan_params *params, int type, int uid); 2193 }; 2194 2195 #define IWL_SCAN_UMAC_HANDLER(_ver) { \ 2196 .version = _ver, \ 2197 .handler = iwl_mvm_scan_umac_v##_ver, \ 2198 } 2199 2200 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { 2201 /* set the newest version first to shorten the list traverse time */ 2202 IWL_SCAN_UMAC_HANDLER(14), 2203 IWL_SCAN_UMAC_HANDLER(12), 2204 }; 2205 2206 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, 2207 struct ieee80211_vif *vif, 2208 struct iwl_host_cmd *hcmd, 2209 struct iwl_mvm_scan_params *params, 2210 int type) 2211 { 2212 int uid, i; 2213 u8 scan_ver; 2214 2215 lockdep_assert_held(&mvm->mutex); 2216 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); 2217 2218 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2219 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; 2220 2221 return iwl_mvm_scan_lmac(mvm, vif, params); 2222 } 2223 2224 uid = iwl_mvm_scan_uid_by_status(mvm, 0); 2225 if (uid < 0) 2226 return uid; 2227 2228 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); 2229 2230 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2231 SCAN_REQ_UMAC, 2232 IWL_FW_CMD_VER_UNKNOWN); 2233 2234 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { 2235 const struct iwl_scan_umac_handler *ver_handler = 2236 &iwl_scan_umac_handlers[i]; 2237 2238 if (ver_handler->version != scan_ver) 2239 continue; 2240 2241 return ver_handler->handler(mvm, vif, params, type, uid); 2242 } 2243 2244 return iwl_mvm_scan_umac(mvm, vif, params, type, uid); 2245 } 2246 2247 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2248 struct cfg80211_scan_request *req, 2249 struct ieee80211_scan_ies *ies) 2250 { 2251 struct iwl_host_cmd hcmd = { 2252 .len = { iwl_mvm_scan_size(mvm), }, 2253 .data = { mvm->scan_cmd, }, 2254 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2255 }; 2256 struct iwl_mvm_scan_params params = {}; 2257 int ret; 2258 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; 2259 2260 lockdep_assert_held(&mvm->mutex); 2261 2262 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2263 IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); 2264 return -EBUSY; 2265 } 2266 2267 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); 2268 if (ret) 2269 return ret; 2270 2271 /* we should have failed registration if scan_cmd was NULL */ 2272 if (WARN_ON(!mvm->scan_cmd)) 2273 return -ENOMEM; 2274 2275 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2276 return -ENOBUFS; 2277 2278 params.n_ssids = req->n_ssids; 2279 params.flags = req->flags; 2280 params.n_channels = req->n_channels; 2281 params.delay = 0; 2282 params.ssids = req->ssids; 2283 params.channels = req->channels; 2284 params.mac_addr = req->mac_addr; 2285 params.mac_addr_mask = req->mac_addr_mask; 2286 params.no_cck = req->no_cck; 2287 params.pass_all = true; 2288 params.n_match_sets = 0; 2289 params.match_sets = NULL; 2290 2291 params.scan_plans = &scan_plan; 2292 params.n_scan_plans = 1; 2293 2294 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2295 2296 if (req->duration) 2297 params.iter_notif = true; 2298 2299 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2300 2301 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, 2302 IWL_MVM_SCAN_REGULAR); 2303 2304 if (ret) 2305 return ret; 2306 2307 iwl_mvm_pause_tcm(mvm, false); 2308 2309 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2310 if (ret) { 2311 /* If the scan failed, it usually means that the FW was unable 2312 * to allocate the time events. Warn on it, but maybe we 2313 * should try to send the command again with different params. 2314 */ 2315 IWL_ERR(mvm, "Scan failed! ret %d\n", ret); 2316 iwl_mvm_resume_tcm(mvm); 2317 return ret; 2318 } 2319 2320 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); 2321 mvm->scan_status |= IWL_MVM_SCAN_REGULAR; 2322 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); 2323 2324 schedule_delayed_work(&mvm->scan_timeout_dwork, 2325 msecs_to_jiffies(SCAN_TIMEOUT)); 2326 2327 return 0; 2328 } 2329 2330 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, 2331 struct ieee80211_vif *vif, 2332 struct cfg80211_sched_scan_request *req, 2333 struct ieee80211_scan_ies *ies, 2334 int type) 2335 { 2336 struct iwl_host_cmd hcmd = { 2337 .len = { iwl_mvm_scan_size(mvm), }, 2338 .data = { mvm->scan_cmd, }, 2339 .dataflags = { IWL_HCMD_DFL_NOCOPY, }, 2340 }; 2341 struct iwl_mvm_scan_params params = {}; 2342 int ret; 2343 2344 lockdep_assert_held(&mvm->mutex); 2345 2346 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { 2347 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); 2348 return -EBUSY; 2349 } 2350 2351 ret = iwl_mvm_check_running_scans(mvm, type); 2352 if (ret) 2353 return ret; 2354 2355 /* we should have failed registration if scan_cmd was NULL */ 2356 if (WARN_ON(!mvm->scan_cmd)) 2357 return -ENOMEM; 2358 2359 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) 2360 return -ENOBUFS; 2361 2362 params.n_ssids = req->n_ssids; 2363 params.flags = req->flags; 2364 params.n_channels = req->n_channels; 2365 params.ssids = req->ssids; 2366 params.channels = req->channels; 2367 params.mac_addr = req->mac_addr; 2368 params.mac_addr_mask = req->mac_addr_mask; 2369 params.no_cck = false; 2370 params.pass_all = iwl_mvm_scan_pass_all(mvm, req); 2371 params.n_match_sets = req->n_match_sets; 2372 params.match_sets = req->match_sets; 2373 if (!req->n_scan_plans) 2374 return -EINVAL; 2375 2376 params.n_scan_plans = req->n_scan_plans; 2377 params.scan_plans = req->scan_plans; 2378 2379 iwl_mvm_fill_scan_type(mvm, ¶ms, vif); 2380 2381 /* In theory, LMAC scans can handle a 32-bit delay, but since 2382 * waiting for over 18 hours to start the scan is a bit silly 2383 * and to keep it aligned with UMAC scans (which only support 2384 * 16-bit delays), trim it down to 16-bits. 2385 */ 2386 if (req->delay > U16_MAX) { 2387 IWL_DEBUG_SCAN(mvm, 2388 "delay value is > 16-bits, set to max possible\n"); 2389 params.delay = U16_MAX; 2390 } else { 2391 params.delay = req->delay; 2392 } 2393 2394 ret = iwl_mvm_config_sched_scan_profiles(mvm, req); 2395 if (ret) 2396 return ret; 2397 2398 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); 2399 2400 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); 2401 2402 if (ret) 2403 return ret; 2404 2405 ret = iwl_mvm_send_cmd(mvm, &hcmd); 2406 if (!ret) { 2407 IWL_DEBUG_SCAN(mvm, 2408 "Sched scan request was sent successfully\n"); 2409 mvm->scan_status |= type; 2410 } else { 2411 /* If the scan failed, it usually means that the FW was unable 2412 * to allocate the time events. Warn on it, but maybe we 2413 * should try to send the command again with different params. 2414 */ 2415 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); 2416 } 2417 2418 return ret; 2419 } 2420 2421 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, 2422 struct iwl_rx_cmd_buffer *rxb) 2423 { 2424 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2425 struct iwl_umac_scan_complete *notif = (void *)pkt->data; 2426 u32 uid = __le32_to_cpu(notif->uid); 2427 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); 2428 2429 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) 2430 return; 2431 2432 /* if the scan is already stopping, we don't need to notify mac80211 */ 2433 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { 2434 struct cfg80211_scan_info info = { 2435 .aborted = aborted, 2436 .scan_start_tsf = mvm->scan_start, 2437 }; 2438 2439 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); 2440 ieee80211_scan_completed(mvm->hw, &info); 2441 mvm->scan_vif = NULL; 2442 cancel_delayed_work(&mvm->scan_timeout_dwork); 2443 iwl_mvm_resume_tcm(mvm); 2444 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { 2445 ieee80211_sched_scan_stopped(mvm->hw); 2446 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2447 } 2448 2449 mvm->scan_status &= ~mvm->scan_uid_status[uid]; 2450 IWL_DEBUG_SCAN(mvm, 2451 "Scan completed, uid %u type %u, status %s, EBS status %s\n", 2452 uid, mvm->scan_uid_status[uid], 2453 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? 2454 "completed" : "aborted", 2455 iwl_mvm_ebs_status_str(notif->ebs_status)); 2456 IWL_DEBUG_SCAN(mvm, 2457 "Last line %d, Last iteration %d, Time from last iteration %d\n", 2458 notif->last_schedule, notif->last_iter, 2459 __le32_to_cpu(notif->time_from_last_iter)); 2460 2461 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && 2462 notif->ebs_status != IWL_SCAN_EBS_INACTIVE) 2463 mvm->last_ebs_successful = false; 2464 2465 mvm->scan_uid_status[uid] = 0; 2466 } 2467 2468 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, 2469 struct iwl_rx_cmd_buffer *rxb) 2470 { 2471 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2472 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; 2473 2474 mvm->scan_start = le64_to_cpu(notif->start_tsf); 2475 2476 IWL_DEBUG_SCAN(mvm, 2477 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", 2478 notif->status, notif->scanned_channels); 2479 2480 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { 2481 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); 2482 ieee80211_sched_scan_results(mvm->hw); 2483 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; 2484 } 2485 2486 IWL_DEBUG_SCAN(mvm, 2487 "UMAC Scan iteration complete: scan started at %llu (TSF)\n", 2488 mvm->scan_start); 2489 } 2490 2491 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) 2492 { 2493 struct iwl_umac_scan_abort cmd = {}; 2494 int uid, ret; 2495 2496 lockdep_assert_held(&mvm->mutex); 2497 2498 /* We should always get a valid index here, because we already 2499 * checked that this type of scan was running in the generic 2500 * code. 2501 */ 2502 uid = iwl_mvm_scan_uid_by_status(mvm, type); 2503 if (WARN_ON_ONCE(uid < 0)) 2504 return uid; 2505 2506 cmd.uid = cpu_to_le32(uid); 2507 2508 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); 2509 2510 ret = iwl_mvm_send_cmd_pdu(mvm, 2511 iwl_cmd_id(SCAN_ABORT_UMAC, 2512 IWL_ALWAYS_LONG_GROUP, 0), 2513 0, sizeof(cmd), &cmd); 2514 if (!ret) 2515 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; 2516 2517 return ret; 2518 } 2519 2520 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) 2521 { 2522 struct iwl_notification_wait wait_scan_done; 2523 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, 2524 SCAN_OFFLOAD_COMPLETE, }; 2525 int ret; 2526 2527 lockdep_assert_held(&mvm->mutex); 2528 2529 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, 2530 scan_done_notif, 2531 ARRAY_SIZE(scan_done_notif), 2532 NULL, NULL); 2533 2534 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); 2535 2536 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2537 ret = iwl_mvm_umac_scan_abort(mvm, type); 2538 else 2539 ret = iwl_mvm_lmac_scan_abort(mvm); 2540 2541 if (ret) { 2542 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); 2543 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); 2544 return ret; 2545 } 2546 2547 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 2548 1 * HZ); 2549 } 2550 2551 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ 2552 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ 2553 } 2554 2555 static int iwl_scan_req_umac_get_size(u8 scan_ver) 2556 { 2557 switch (scan_ver) { 2558 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14); 2559 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); 2560 } 2561 2562 return 0; 2563 } 2564 2565 int iwl_mvm_scan_size(struct iwl_mvm *mvm) 2566 { 2567 int base_size, tail_size; 2568 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, 2569 SCAN_REQ_UMAC, 2570 IWL_FW_CMD_VER_UNKNOWN); 2571 2572 base_size = iwl_scan_req_umac_get_size(scan_ver); 2573 if (base_size) 2574 return base_size; 2575 2576 2577 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) 2578 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; 2579 else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) 2580 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; 2581 else if (iwl_mvm_cdb_scan_api(mvm)) 2582 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; 2583 else 2584 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; 2585 2586 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2587 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) 2588 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); 2589 else 2590 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); 2591 2592 return base_size + 2593 sizeof(struct iwl_scan_channel_cfg_umac) * 2594 mvm->fw->ucode_capa.n_scan_channels + 2595 tail_size; 2596 } 2597 return sizeof(struct iwl_scan_req_lmac) + 2598 sizeof(struct iwl_scan_channel_cfg_lmac) * 2599 mvm->fw->ucode_capa.n_scan_channels + 2600 sizeof(struct iwl_scan_probe_req_v1); 2601 } 2602 2603 /* 2604 * This function is used in nic restart flow, to inform mac80211 about scans 2605 * that was aborted by restart flow or by an assert. 2606 */ 2607 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) 2608 { 2609 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 2610 int uid, i; 2611 2612 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); 2613 if (uid >= 0) { 2614 struct cfg80211_scan_info info = { 2615 .aborted = true, 2616 }; 2617 2618 ieee80211_scan_completed(mvm->hw, &info); 2619 mvm->scan_uid_status[uid] = 0; 2620 } 2621 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); 2622 if (uid >= 0 && !mvm->fw_restart) { 2623 ieee80211_sched_scan_stopped(mvm->hw); 2624 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2625 mvm->scan_uid_status[uid] = 0; 2626 } 2627 uid = iwl_mvm_scan_uid_by_status(mvm, 2628 IWL_MVM_SCAN_STOPPING_REGULAR); 2629 if (uid >= 0) 2630 mvm->scan_uid_status[uid] = 0; 2631 2632 uid = iwl_mvm_scan_uid_by_status(mvm, 2633 IWL_MVM_SCAN_STOPPING_SCHED); 2634 if (uid >= 0) 2635 mvm->scan_uid_status[uid] = 0; 2636 2637 /* We shouldn't have any UIDs still set. Loop over all the 2638 * UIDs to make sure there's nothing left there and warn if 2639 * any is found. 2640 */ 2641 for (i = 0; i < mvm->max_scans; i++) { 2642 if (WARN_ONCE(mvm->scan_uid_status[i], 2643 "UMAC scan UID %d status was not cleaned\n", 2644 i)) 2645 mvm->scan_uid_status[i] = 0; 2646 } 2647 } else { 2648 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { 2649 struct cfg80211_scan_info info = { 2650 .aborted = true, 2651 }; 2652 2653 ieee80211_scan_completed(mvm->hw, &info); 2654 } 2655 2656 /* Sched scan will be restarted by mac80211 in 2657 * restart_hw, so do not report if FW is about to be 2658 * restarted. 2659 */ 2660 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && 2661 !mvm->fw_restart) { 2662 ieee80211_sched_scan_stopped(mvm->hw); 2663 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2664 } 2665 } 2666 } 2667 2668 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) 2669 { 2670 int ret; 2671 2672 if (!(mvm->scan_status & type)) 2673 return 0; 2674 2675 if (iwl_mvm_is_radio_killed(mvm)) { 2676 ret = 0; 2677 goto out; 2678 } 2679 2680 ret = iwl_mvm_scan_stop_wait(mvm, type); 2681 if (!ret) 2682 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; 2683 out: 2684 /* Clear the scan status so the next scan requests will 2685 * succeed and mark the scan as stopping, so that the Rx 2686 * handler doesn't do anything, as the scan was stopped from 2687 * above. 2688 */ 2689 mvm->scan_status &= ~type; 2690 2691 if (type == IWL_MVM_SCAN_REGULAR) { 2692 cancel_delayed_work(&mvm->scan_timeout_dwork); 2693 if (notify) { 2694 struct cfg80211_scan_info info = { 2695 .aborted = true, 2696 }; 2697 2698 ieee80211_scan_completed(mvm->hw, &info); 2699 } 2700 } else if (notify) { 2701 ieee80211_sched_scan_stopped(mvm->hw); 2702 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; 2703 } 2704 2705 return ret; 2706 } 2707