drivers/net/wireless/intel/iwlwifi/mvm/scan.c

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  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 default number of APs override */
  95 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_OVERRIDE 10
  96
  97 struct iwl_mvm_scan_timing_params {
  98         u32 suspend_time;
  99         u32 max_out_time;
 100 };
 101
 102 static struct iwl_mvm_scan_timing_params scan_timing[] = {
 103         [IWL_SCAN_TYPE_UNASSOC] = {
 104                 .suspend_time = 0,
 105                 .max_out_time = 0,
 106         },
 107         [IWL_SCAN_TYPE_WILD] = {
 108                 .suspend_time = 30,
 109                 .max_out_time = 120,
 110         },
 111         [IWL_SCAN_TYPE_MILD] = {
 112                 .suspend_time = 120,
 113                 .max_out_time = 120,
 114         },
 115         [IWL_SCAN_TYPE_FRAGMENTED] = {
 116                 .suspend_time = 95,
 117                 .max_out_time = 44,
 118         },
 119         [IWL_SCAN_TYPE_FAST_BALANCE] = {
 120                 .suspend_time = 30,
 121                 .max_out_time = 37,
 122         },
 123 };
 124
 125 struct iwl_mvm_scan_params {
 126         /* For CDB this is low band scan type, for non-CDB - type. */
 127         enum iwl_mvm_scan_type type;
 128         enum iwl_mvm_scan_type hb_type;
 129         u32 n_channels;
 130         u16 delay;
 131         int n_ssids;
 132         struct cfg80211_ssid *ssids;
 133         struct ieee80211_channel **channels;
 134         u32 flags;
 135         u8 *mac_addr;
 136         u8 *mac_addr_mask;
 137         bool no_cck;
 138         bool pass_all;
 139         int n_match_sets;
 140         struct iwl_scan_probe_req preq;
 141         struct cfg80211_match_set *match_sets;
 142         int n_scan_plans;
 143         struct cfg80211_sched_scan_plan *scan_plans;
 144         u32 measurement_dwell;
 145 };
 146
 147 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 148 {
 149         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 150
 151         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 152                 return (void *)&cmd->v8.data;
 153
 154         if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 155                 return (void *)&cmd->v7.data;
 156
 157         if (iwl_mvm_cdb_scan_api(mvm))
 158                 return (void *)&cmd->v6.data;
 159
 160         return (void *)&cmd->v1.data;
 161 }
 162
 163 static inline struct iwl_scan_umac_chan_param *
 164 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
 165 {
 166         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 167
 168         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 169                 return &cmd->v8.channel;
 170
 171         if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 172                 return &cmd->v7.channel;
 173
 174         if (iwl_mvm_cdb_scan_api(mvm))
 175                 return &cmd->v6.channel;
 176
 177         return &cmd->v1.channel;
 178 }
 179
 180 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 181 {
 182         if (mvm->scan_rx_ant != ANT_NONE)
 183                 return mvm->scan_rx_ant;
 184         return iwl_mvm_get_valid_rx_ant(mvm);
 185 }
 186
 187 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
 188 {
 189         u16 rx_chain;
 190         u8 rx_ant;
 191
 192         rx_ant = iwl_mvm_scan_rx_ant(mvm);
 193         rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
 194         rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
 195         rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
 196         rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
 197         return cpu_to_le16(rx_chain);
 198 }
 199
 200 static inline __le32
 201 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
 202                           bool no_cck)
 203 {
 204         u32 tx_ant;
 205
 206         iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
 207         tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
 208
 209         if (band == NL80211_BAND_2GHZ && !no_cck)
 210                 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
 211                                    tx_ant);
 212         else
 213                 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
 214 }
 215
 216 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
 217                                             struct ieee80211_vif *vif)
 218 {
 219         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 220         int *global_cnt = data;
 221
 222         if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
 223             mvmvif->phy_ctxt->id < NUM_PHY_CTX)
 224                 *global_cnt += 1;
 225 }
 226
 227 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
 228 {
 229         return mvm->tcm.result.global_load;
 230 }
 231
 232 static enum iwl_mvm_traffic_load
 233 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
 234 {
 235         return mvm->tcm.result.band_load[band];
 236 }
 237
 238 struct iwl_is_dcm_with_go_iterator_data {
 239         struct ieee80211_vif *current_vif;
 240         bool is_dcm_with_p2p_go;
 241 };
 242
 243 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac,
 244                                             struct ieee80211_vif *vif)
 245 {
 246         struct iwl_is_dcm_with_go_iterator_data *data = _data;
 247         struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif);
 248         struct iwl_mvm_vif *curr_mvmvif =
 249                 iwl_mvm_vif_from_mac80211(data->current_vif);
 250
 251         /* exclude the given vif */
 252         if (vif == data->current_vif)
 253                 return;
 254
 255         if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
 256             other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
 257             other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
 258                 data->is_dcm_with_p2p_go = true;
 259 }
 260
 261 static enum
 262 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 263                                          struct ieee80211_vif *vif,
 264                                          enum iwl_mvm_traffic_load load,
 265                                          bool low_latency)
 266 {
 267         int global_cnt = 0;
 268
 269         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 270                                             IEEE80211_IFACE_ITER_NORMAL,
 271                                             iwl_mvm_scan_condition_iterator,
 272                                             &global_cnt);
 273         if (!global_cnt)
 274                 return IWL_SCAN_TYPE_UNASSOC;
 275
 276         if (fw_has_api(&mvm->fw->ucode_capa,
 277                        IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
 278                 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
 279                     (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
 280                         return IWL_SCAN_TYPE_FRAGMENTED;
 281
 282                 /* in case of DCM with GO where BSS DTIM interval < 220msec
 283                  * set all scan requests as fast-balance scan
 284                  * */
 285                 if (vif && vif->type == NL80211_IFTYPE_STATION &&
 286                     vif->bss_conf.dtim_period < 220) {
 287                         struct iwl_is_dcm_with_go_iterator_data data = {
 288                                 .current_vif = vif,
 289                                 .is_dcm_with_p2p_go = false,
 290                         };
 291
 292                         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 293                                                 IEEE80211_IFACE_ITER_NORMAL,
 294                                                 iwl_mvm_is_dcm_with_go_iterator,
 295                                                 &data);
 296                         if (data.is_dcm_with_p2p_go)
 297                                 return IWL_SCAN_TYPE_FAST_BALANCE;
 298                 }
 299         }
 300
 301         if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
 302                 return IWL_SCAN_TYPE_MILD;
 303
 304         return IWL_SCAN_TYPE_WILD;
 305 }
 306
 307 static enum
 308 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 309                                         struct ieee80211_vif *vif)
 310 {
 311         enum iwl_mvm_traffic_load load;
 312         bool low_latency;
 313
 314         load = iwl_mvm_get_traffic_load(mvm);
 315         low_latency = iwl_mvm_low_latency(mvm);
 316
 317         return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 318 }
 319
 320 static enum
 321 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
 322                                              struct ieee80211_vif *vif,
 323                                              enum nl80211_band band)
 324 {
 325         enum iwl_mvm_traffic_load load;
 326         bool low_latency;
 327
 328         load = iwl_mvm_get_traffic_load_band(mvm, band);
 329         low_latency = iwl_mvm_low_latency_band(mvm, band);
 330
 331         return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 332 }
 333
 334 static int
 335 iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm,
 336                               struct cfg80211_scan_request *req,
 337                               struct iwl_mvm_scan_params *params)
 338 {
 339         u32 duration = scan_timing[params->type].max_out_time;
 340
 341         if (!req->duration)
 342                 return 0;
 343
 344         if (iwl_mvm_is_cdb_supported(mvm)) {
 345                 u32 hb_time = scan_timing[params->hb_type].max_out_time;
 346
 347                 duration = min_t(u32, duration, hb_time);
 348         }
 349
 350         if (req->duration_mandatory && req->duration > duration) {
 351                 IWL_DEBUG_SCAN(mvm,
 352                                "Measurement scan - too long dwell %hu (max out time %u)\n",
 353                                req->duration,
 354                                duration);
 355                 return -EOPNOTSUPP;
 356         }
 357
 358         return min_t(u32, (u32)req->duration, duration);
 359 }
 360
 361 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
 362 {
 363         /* require rrm scan whenever the fw supports it */
 364         return fw_has_capa(&mvm->fw->ucode_capa,
 365                            IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
 366 }
 367
 368 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
 369 {
 370         int max_probe_len;
 371
 372         max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
 373
 374         /* we create the 802.11 header and SSID element */
 375         max_probe_len -= 24 + 2;
 376
 377         /* DS parameter set element is added on 2.4GHZ band if required */
 378         if (iwl_mvm_rrm_scan_needed(mvm))
 379                 max_probe_len -= 3;
 380
 381         return max_probe_len;
 382 }
 383
 384 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 385 {
 386         int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
 387
 388         /* TODO: [BUG] This function should return the maximum allowed size of
 389          * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
 390          * in the same command. So the correct implementation of this function
 391          * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
 392          * command has only 512 bytes and it would leave us with about 240
 393          * bytes for scan IEs, which is clearly not enough. So meanwhile
 394          * we will report an incorrect value. This may result in a failure to
 395          * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
 396          * functions with -ENOBUFS, if a large enough probe will be provided.
 397          */
 398         return max_ie_len;
 399 }
 400
 401 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
 402                                               struct iwl_rx_cmd_buffer *rxb)
 403 {
 404         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 405         struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
 406
 407         IWL_DEBUG_SCAN(mvm,
 408                        "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
 409                        notif->status, notif->scanned_channels);
 410
 411         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
 412                 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
 413                 ieee80211_sched_scan_results(mvm->hw);
 414                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 415         }
 416 }
 417
 418 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
 419                                  struct iwl_rx_cmd_buffer *rxb)
 420 {
 421         IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
 422         ieee80211_sched_scan_results(mvm->hw);
 423 }
 424
 425 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
 426 {
 427         switch (status) {
 428         case IWL_SCAN_EBS_SUCCESS:
 429                 return "successful";
 430         case IWL_SCAN_EBS_INACTIVE:
 431                 return "inactive";
 432         case IWL_SCAN_EBS_FAILED:
 433         case IWL_SCAN_EBS_CHAN_NOT_FOUND:
 434         default:
 435                 return "failed";
 436         }
 437 }
 438
 439 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
 440                                          struct iwl_rx_cmd_buffer *rxb)
 441 {
 442         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 443         struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
 444         bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
 445
 446         /* If this happens, the firmware has mistakenly sent an LMAC
 447          * notification during UMAC scans -- warn and ignore it.
 448          */
 449         if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
 450                                      IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
 451                 return;
 452
 453         /* scan status must be locked for proper checking */
 454         lockdep_assert_held(&mvm->mutex);
 455
 456         /* We first check if we were stopping a scan, in which case we
 457          * just clear the stopping flag.  Then we check if it was a
 458          * firmware initiated stop, in which case we need to inform
 459          * mac80211.
 460          * Note that we can have a stopping and a running scan
 461          * simultaneously, but we can't have two different types of
 462          * scans stopping or running at the same time (since LMAC
 463          * doesn't support it).
 464          */
 465
 466         if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
 467                 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
 468
 469                 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 470                                aborted ? "aborted" : "completed",
 471                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 472                 IWL_DEBUG_SCAN(mvm,
 473                                "Last line %d, Last iteration %d, Time after last iteration %d\n",
 474                                scan_notif->last_schedule_line,
 475                                scan_notif->last_schedule_iteration,
 476                                __le32_to_cpu(scan_notif->time_after_last_iter));
 477
 478                 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
 479         } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
 480                 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
 481                                aborted ? "aborted" : "completed",
 482                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 483
 484                 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
 485         } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
 486                 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
 487
 488                 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 489                                aborted ? "aborted" : "completed",
 490                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 491                 IWL_DEBUG_SCAN(mvm,
 492                                "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
 493                                scan_notif->last_schedule_line,
 494                                scan_notif->last_schedule_iteration,
 495                                __le32_to_cpu(scan_notif->time_after_last_iter));
 496
 497                 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
 498                 ieee80211_sched_scan_stopped(mvm->hw);
 499                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 500         } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
 501                 struct cfg80211_scan_info info = {
 502                         .aborted = aborted,
 503                 };
 504
 505                 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
 506                                aborted ? "aborted" : "completed",
 507                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 508
 509                 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
 510                 ieee80211_scan_completed(mvm->hw, &info);
 511                 cancel_delayed_work(&mvm->scan_timeout_dwork);
 512                 iwl_mvm_resume_tcm(mvm);
 513         } else {
 514                 IWL_ERR(mvm,
 515                         "got scan complete notification but no scan is running\n");
 516         }
 517
 518         mvm->last_ebs_successful =
 519                         scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
 520                         scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
 521 }
 522
 523 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
 524 {
 525         int i;
 526
 527         for (i = 0; i < PROBE_OPTION_MAX; i++) {
 528                 if (!ssid_list[i].len)
 529                         break;
 530                 if (ssid_list[i].len == ssid_len &&
 531                     !memcmp(ssid_list->ssid, ssid, ssid_len))
 532                         return i;
 533         }
 534         return -1;
 535 }
 536
 537 /* We insert the SSIDs in an inverted order, because the FW will
 538  * invert it back.
 539  */
 540 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
 541                                  struct iwl_ssid_ie *ssids,
 542                                  u32 *ssid_bitmap)
 543 {
 544         int i, j;
 545         int index;
 546         u32 tmp_bitmap = 0;
 547
 548         /*
 549          * copy SSIDs from match list.
 550          * iwl_config_sched_scan_profiles() uses the order of these ssids to
 551          * config match list.
 552          */
 553         for (i = 0, j = params->n_match_sets - 1;
 554              j >= 0 && i < PROBE_OPTION_MAX;
 555              i++, j--) {
 556                 /* skip empty SSID matchsets */
 557                 if (!params->match_sets[j].ssid.ssid_len)
 558                         continue;
 559                 ssids[i].id = WLAN_EID_SSID;
 560                 ssids[i].len = params->match_sets[j].ssid.ssid_len;
 561                 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
 562                        ssids[i].len);
 563         }
 564
 565         /* add SSIDs from scan SSID list */
 566         for (j = params->n_ssids - 1;
 567              j >= 0 && i < PROBE_OPTION_MAX;
 568              i++, j--) {
 569                 index = iwl_ssid_exist(params->ssids[j].ssid,
 570                                        params->ssids[j].ssid_len,
 571                                        ssids);
 572                 if (index < 0) {
 573                         ssids[i].id = WLAN_EID_SSID;
 574                         ssids[i].len = params->ssids[j].ssid_len;
 575                         memcpy(ssids[i].ssid, params->ssids[j].ssid,
 576                                ssids[i].len);
 577                         tmp_bitmap |= BIT(i);
 578                 } else {
 579                         tmp_bitmap |= BIT(index);
 580                 }
 581         }
 582         if (ssid_bitmap)
 583                 *ssid_bitmap = tmp_bitmap;
 584 }
 585
 586 static int
 587 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
 588                                    struct cfg80211_sched_scan_request *req)
 589 {
 590         struct iwl_scan_offload_profile *profile;
 591         struct iwl_scan_offload_profile_cfg *profile_cfg;
 592         struct iwl_scan_offload_blacklist *blacklist;
 593         struct iwl_host_cmd cmd = {
 594                 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
 595                 .len[1] = sizeof(*profile_cfg),
 596                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 597                 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
 598         };
 599         int blacklist_len;
 600         int i;
 601         int ret;
 602
 603         if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
 604                 return -EIO;
 605
 606         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
 607                 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
 608         else
 609                 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
 610
 611         blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL);
 612         if (!blacklist)
 613                 return -ENOMEM;
 614
 615         profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
 616         if (!profile_cfg) {
 617                 ret = -ENOMEM;
 618                 goto free_blacklist;
 619         }
 620
 621         cmd.data[0] = blacklist;
 622         cmd.len[0] = sizeof(*blacklist) * blacklist_len;
 623         cmd.data[1] = profile_cfg;
 624
 625         /* No blacklist configuration */
 626
 627         profile_cfg->num_profiles = req->n_match_sets;
 628         profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
 629         profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
 630         profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
 631         if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
 632                 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
 633
 634         for (i = 0; i < req->n_match_sets; i++) {
 635                 profile = &profile_cfg->profiles[i];
 636                 profile->ssid_index = i;
 637                 /* Support any cipher and auth algorithm */
 638                 profile->unicast_cipher = 0xff;
 639                 profile->auth_alg = 0xff;
 640                 profile->network_type = IWL_NETWORK_TYPE_ANY;
 641                 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
 642                 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
 643         }
 644
 645         IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
 646
 647         ret = iwl_mvm_send_cmd(mvm, &cmd);
 648         kfree(profile_cfg);
 649 free_blacklist:
 650         kfree(blacklist);
 651
 652         return ret;
 653 }
 654
 655 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
 656                                   struct cfg80211_sched_scan_request *req)
 657 {
 658         if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
 659                 IWL_DEBUG_SCAN(mvm,
 660                                "Sending scheduled scan with filtering, n_match_sets %d\n",
 661                                req->n_match_sets);
 662                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 663                 return false;
 664         }
 665
 666         IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
 667
 668         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 669         return true;
 670 }
 671
 672 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
 673 {
 674         int ret;
 675         struct iwl_host_cmd cmd = {
 676                 .id = SCAN_OFFLOAD_ABORT_CMD,
 677         };
 678         u32 status = CAN_ABORT_STATUS;
 679
 680         ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
 681         if (ret)
 682                 return ret;
 683
 684         if (status != CAN_ABORT_STATUS) {
 685                 /*
 686                  * The scan abort will return 1 for success or
 687                  * 2 for "failure".  A failure condition can be
 688                  * due to simply not being in an active scan which
 689                  * can occur if we send the scan abort before the
 690                  * microcode has notified us that a scan is completed.
 691                  */
 692                 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
 693                 ret = -ENOENT;
 694         }
 695
 696         return ret;
 697 }
 698
 699 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
 700                                      struct iwl_scan_req_tx_cmd *tx_cmd,
 701                                      bool no_cck)
 702 {
 703         tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 704                                          TX_CMD_FLG_BT_DIS);
 705         tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 706                                                            NL80211_BAND_2GHZ,
 707                                                            no_cck);
 708         tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
 709
 710         tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 711                                          TX_CMD_FLG_BT_DIS);
 712         tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 713                                                            NL80211_BAND_5GHZ,
 714                                                            no_cck);
 715         tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
 716 }
 717
 718 static void
 719 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
 720                                struct ieee80211_channel **channels,
 721                                int n_channels, u32 ssid_bitmap,
 722                                struct iwl_scan_req_lmac *cmd)
 723 {
 724         struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
 725         int i;
 726
 727         for (i = 0; i < n_channels; i++) {
 728                 channel_cfg[i].channel_num =
 729                         cpu_to_le16(channels[i]->hw_value);
 730                 channel_cfg[i].iter_count = cpu_to_le16(1);
 731                 channel_cfg[i].iter_interval = 0;
 732                 channel_cfg[i].flags =
 733                         cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
 734                                     ssid_bitmap);
 735         }
 736 }
 737
 738 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
 739                                            size_t len, u8 *const pos)
 740 {
 741         static const u8 before_ds_params[] = {
 742                         WLAN_EID_SSID,
 743                         WLAN_EID_SUPP_RATES,
 744                         WLAN_EID_REQUEST,
 745                         WLAN_EID_EXT_SUPP_RATES,
 746         };
 747         size_t offs;
 748         u8 *newpos = pos;
 749
 750         if (!iwl_mvm_rrm_scan_needed(mvm)) {
 751                 memcpy(newpos, ies, len);
 752                 return newpos + len;
 753         }
 754
 755         offs = ieee80211_ie_split(ies, len,
 756                                   before_ds_params,
 757                                   ARRAY_SIZE(before_ds_params),
 758                                   0);
 759
 760         memcpy(newpos, ies, offs);
 761         newpos += offs;
 762
 763         /* Add a placeholder for DS Parameter Set element */
 764         *newpos++ = WLAN_EID_DS_PARAMS;
 765         *newpos++ = 1;
 766         *newpos++ = 0;
 767
 768         memcpy(newpos, ies + offs, len - offs);
 769         newpos += len - offs;
 770
 771         return newpos;
 772 }
 773
 774 #define WFA_TPC_IE_LEN  9
 775
 776 static void iwl_mvm_add_tpc_report_ie(u8 *pos)
 777 {
 778         pos[0] = WLAN_EID_VENDOR_SPECIFIC;
 779         pos[1] = WFA_TPC_IE_LEN - 2;
 780         pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
 781         pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
 782         pos[4] = WLAN_OUI_MICROSOFT & 0xff;
 783         pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
 784         pos[6] = 0;
 785         /* pos[7] - tx power will be inserted by the FW */
 786         pos[7] = 0;
 787         pos[8] = 0;
 788 }
 789
 790 static void
 791 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 792                          struct ieee80211_scan_ies *ies,
 793                          struct iwl_mvm_scan_params *params)
 794 {
 795         struct ieee80211_mgmt *frame = (void *)params->preq.buf;
 796         u8 *pos, *newpos;
 797         const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
 798                 params->mac_addr : NULL;
 799
 800         /*
 801          * Unfortunately, right now the offload scan doesn't support randomising
 802          * within the firmware, so until the firmware API is ready we implement
 803          * it in the driver. This means that the scan iterations won't really be
 804          * random, only when it's restarted, but at least that helps a bit.
 805          */
 806         if (mac_addr)
 807                 get_random_mask_addr(frame->sa, mac_addr,
 808                                      params->mac_addr_mask);
 809         else
 810                 memcpy(frame->sa, vif->addr, ETH_ALEN);
 811
 812         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 813         eth_broadcast_addr(frame->da);
 814         eth_broadcast_addr(frame->bssid);
 815         frame->seq_ctrl = 0;
 816
 817         pos = frame->u.probe_req.variable;
 818         *pos++ = WLAN_EID_SSID;
 819         *pos++ = 0;
 820
 821         params->preq.mac_header.offset = 0;
 822         params->preq.mac_header.len = cpu_to_le16(24 + 2);
 823
 824         /* Insert ds parameter set element on 2.4 GHz band */
 825         newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
 826                                                  ies->ies[NL80211_BAND_2GHZ],
 827                                                  ies->len[NL80211_BAND_2GHZ],
 828                                                  pos);
 829         params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
 830         params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
 831         pos = newpos;
 832
 833         memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
 834                ies->len[NL80211_BAND_5GHZ]);
 835         params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
 836         params->preq.band_data[1].len =
 837                 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
 838         pos += ies->len[NL80211_BAND_5GHZ];
 839
 840         memcpy(pos, ies->common_ies, ies->common_ie_len);
 841         params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
 842
 843         if (iwl_mvm_rrm_scan_needed(mvm) &&
 844             !fw_has_capa(&mvm->fw->ucode_capa,
 845                          IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
 846                 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
 847                 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
 848                                                            WFA_TPC_IE_LEN);
 849         } else {
 850                 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
 851         }
 852 }
 853
 854 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
 855                                     struct iwl_scan_req_lmac *cmd,
 856                                     struct iwl_mvm_scan_params *params)
 857 {
 858         cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
 859         cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
 860         cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 861         cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
 862         cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
 863         cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
 864         cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 865 }
 866
 867 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
 868                                      struct ieee80211_scan_ies *ies,
 869                                      int n_channels)
 870 {
 871         return ((n_ssids <= PROBE_OPTION_MAX) &&
 872                 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
 873                 (ies->common_ie_len +
 874                  ies->len[NL80211_BAND_2GHZ] +
 875                  ies->len[NL80211_BAND_5GHZ] <=
 876                  iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
 877 }
 878
 879 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
 880                                         struct ieee80211_vif *vif)
 881 {
 882         const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
 883         bool low_latency;
 884
 885         if (iwl_mvm_is_cdb_supported(mvm))
 886                 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
 887         else
 888                 low_latency = iwl_mvm_low_latency(mvm);
 889
 890         /* We can only use EBS if:
 891          *      1. the feature is supported;
 892          *      2. the last EBS was successful;
 893          *      3. if only single scan, the single scan EBS API is supported;
 894          *      4. it's not a p2p find operation.
 895          *      5. we are not in low latency mode,
 896          *         or if fragmented ebs is supported by the FW
 897          */
 898         return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
 899                 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
 900                 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 901                 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
 902 }
 903
 904 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
 905 {
 906         return params->n_scan_plans == 1 &&
 907                 params->scan_plans[0].iterations == 1;
 908 }
 909
 910 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
 911 {
 912         return (type == IWL_SCAN_TYPE_FRAGMENTED ||
 913                 type == IWL_SCAN_TYPE_FAST_BALANCE);
 914 }
 915
 916 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
 917                                    struct iwl_mvm_scan_params *params,
 918                                    struct ieee80211_vif *vif)
 919 {
 920         int flags = 0;
 921
 922         if (params->n_ssids == 0)
 923                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
 924
 925         if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
 926                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
 927
 928         if (iwl_mvm_is_scan_fragmented(params->type))
 929                 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
 930
 931         if (iwl_mvm_rrm_scan_needed(mvm) &&
 932             fw_has_capa(&mvm->fw->ucode_capa,
 933                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 934                 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
 935
 936         if (params->pass_all)
 937                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
 938         else
 939                 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
 940
 941 #ifdef CONFIG_IWLWIFI_DEBUGFS
 942         if (mvm->scan_iter_notif_enabled)
 943                 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 944 #endif
 945
 946         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
 947                 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 948
 949         if (iwl_mvm_is_regular_scan(params) &&
 950             vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 951             !iwl_mvm_is_scan_fragmented(params->type))
 952                 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
 953
 954         return flags;
 955 }
 956
 957 static void
 958 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
 959                                   struct iwl_scan_probe_req *src_p_req)
 960 {
 961         int i;
 962
 963         p_req->mac_header = src_p_req->mac_header;
 964         for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
 965                 p_req->band_data[i] = src_p_req->band_data[i];
 966         p_req->common_data = src_p_req->common_data;
 967         memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
 968 }
 969
 970 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 971                              struct iwl_mvm_scan_params *params)
 972 {
 973         struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
 974         struct iwl_scan_probe_req_v1 *preq =
 975                 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
 976                          mvm->fw->ucode_capa.n_scan_channels);
 977         u32 ssid_bitmap = 0;
 978         int i;
 979         u8 band;
 980
 981         if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
 982                 return -EINVAL;
 983
 984         iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
 985
 986         cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
 987         cmd->iter_num = cpu_to_le32(1);
 988         cmd->n_channels = (u8)params->n_channels;
 989
 990         cmd->delay = cpu_to_le32(params->delay);
 991
 992         cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
 993                                                               vif));
 994
 995         band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
 996         cmd->flags = cpu_to_le32(band);
 997         cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
 998                                         MAC_FILTER_IN_BEACON);
 999         iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
1000         iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
1001
1002         /* this API uses bits 1-20 instead of 0-19 */
1003         ssid_bitmap <<= 1;
1004
1005         for (i = 0; i < params->n_scan_plans; i++) {
1006                 struct cfg80211_sched_scan_plan *scan_plan =
1007                         &params->scan_plans[i];
1008
1009                 cmd->schedule[i].delay =
1010                         cpu_to_le16(scan_plan->interval);
1011                 cmd->schedule[i].iterations = scan_plan->iterations;
1012                 cmd->schedule[i].full_scan_mul = 1;
1013         }
1014
1015         /*
1016          * If the number of iterations of the last scan plan is set to
1017          * zero, it should run infinitely. However, this is not always the case.
1018          * For example, when regular scan is requested the driver sets one scan
1019          * plan with one iteration.
1020          */
1021         if (!cmd->schedule[i - 1].iterations)
1022                 cmd->schedule[i - 1].iterations = 0xff;
1023
1024         if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1025                 cmd->channel_opt[0].flags =
1026                         cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1027                                     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1028                                     IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1029                 cmd->channel_opt[0].non_ebs_ratio =
1030                         cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
1031                 cmd->channel_opt[1].flags =
1032                         cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1033                                     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1034                                     IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1035                 cmd->channel_opt[1].non_ebs_ratio =
1036                         cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1037         }
1038
1039         iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1040                                        params->n_channels, ssid_bitmap, cmd);
1041
1042         iwl_mvm_scan_set_legacy_probe_req(preq, &params->preq);
1043
1044         return 0;
1045 }
1046
1047 static int rate_to_scan_rate_flag(unsigned int rate)
1048 {
1049         static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1050                 [IWL_RATE_1M_INDEX]     = SCAN_CONFIG_RATE_1M,
1051                 [IWL_RATE_2M_INDEX]     = SCAN_CONFIG_RATE_2M,
1052                 [IWL_RATE_5M_INDEX]     = SCAN_CONFIG_RATE_5M,
1053                 [IWL_RATE_11M_INDEX]    = SCAN_CONFIG_RATE_11M,
1054                 [IWL_RATE_6M_INDEX]     = SCAN_CONFIG_RATE_6M,
1055                 [IWL_RATE_9M_INDEX]     = SCAN_CONFIG_RATE_9M,
1056                 [IWL_RATE_12M_INDEX]    = SCAN_CONFIG_RATE_12M,
1057                 [IWL_RATE_18M_INDEX]    = SCAN_CONFIG_RATE_18M,
1058                 [IWL_RATE_24M_INDEX]    = SCAN_CONFIG_RATE_24M,
1059                 [IWL_RATE_36M_INDEX]    = SCAN_CONFIG_RATE_36M,
1060                 [IWL_RATE_48M_INDEX]    = SCAN_CONFIG_RATE_48M,
1061                 [IWL_RATE_54M_INDEX]    = SCAN_CONFIG_RATE_54M,
1062         };
1063
1064         return rate_to_scan_rate[rate];
1065 }
1066
1067 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1068 {
1069         struct ieee80211_supported_band *band;
1070         unsigned int rates = 0;
1071         int i;
1072
1073         band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1074         for (i = 0; i < band->n_bitrates; i++)
1075                 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1076         band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1077         for (i = 0; i < band->n_bitrates; i++)
1078                 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1079
1080         /* Set both basic rates and supported rates */
1081         rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1082
1083         return cpu_to_le32(rates);
1084 }
1085
1086 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1087                                     struct iwl_scan_dwell *dwell)
1088 {
1089         dwell->active = IWL_SCAN_DWELL_ACTIVE;
1090         dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1091         dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1092         dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1093 }
1094
1095 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1096                                   u32 max_channels)
1097 {
1098         struct ieee80211_supported_band *band;
1099         int i, j = 0;
1100
1101         band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1102         for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1103                 channels[j] = band->channels[i].hw_value;
1104         band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1105         for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1106                 channels[j] = band->channels[i].hw_value;
1107 }
1108
1109 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1110                                         u32 flags, u8 channel_flags,
1111                                         u32 max_channels)
1112 {
1113         enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1114         struct iwl_scan_config_v1 *cfg = config;
1115
1116         cfg->flags = cpu_to_le32(flags);
1117         cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1118         cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1119         cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1120         cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1121         cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1122
1123         iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1124
1125         memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1126
1127         cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1128         cfg->channel_flags = channel_flags;
1129
1130         iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1131 }
1132
1133 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1134                                         u32 flags, u8 channel_flags,
1135                                         u32 max_channels)
1136 {
1137         struct iwl_scan_config_v2 *cfg = config;
1138
1139         cfg->flags = cpu_to_le32(flags);
1140         cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1141         cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1142         cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1143
1144         if (iwl_mvm_is_cdb_supported(mvm)) {
1145                 enum iwl_mvm_scan_type lb_type, hb_type;
1146
1147                 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1148                                                      NL80211_BAND_2GHZ);
1149                 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1150                                                      NL80211_BAND_5GHZ);
1151
1152                 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1153                         cpu_to_le32(scan_timing[lb_type].max_out_time);
1154                 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1155                         cpu_to_le32(scan_timing[lb_type].suspend_time);
1156
1157                 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1158                         cpu_to_le32(scan_timing[hb_type].max_out_time);
1159                 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1160                         cpu_to_le32(scan_timing[hb_type].suspend_time);
1161         } else {
1162                 enum iwl_mvm_scan_type type =
1163                         iwl_mvm_get_scan_type(mvm, NULL);
1164
1165                 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1166                         cpu_to_le32(scan_timing[type].max_out_time);
1167                 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1168                         cpu_to_le32(scan_timing[type].suspend_time);
1169         }
1170
1171         iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1172
1173         memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1174
1175         cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1176         cfg->channel_flags = channel_flags;
1177
1178         iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1179 }
1180
1181 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1182 {
1183         void *cfg;
1184         int ret, cmd_size;
1185         struct iwl_host_cmd cmd = {
1186                 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1187         };
1188         enum iwl_mvm_scan_type type;
1189         enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1190         int num_channels =
1191                 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1192                 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1193         u32 flags;
1194         u8 channel_flags;
1195
1196         if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1197                 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1198
1199         if (iwl_mvm_is_cdb_supported(mvm)) {
1200                 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1201                                                   NL80211_BAND_2GHZ);
1202                 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1203                                                      NL80211_BAND_5GHZ);
1204                 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1205                         return 0;
1206         } else {
1207                 type = iwl_mvm_get_scan_type(mvm, NULL);
1208                 if (type == mvm->scan_type)
1209                         return 0;
1210         }
1211
1212         if (iwl_mvm_cdb_scan_api(mvm))
1213                 cmd_size = sizeof(struct iwl_scan_config_v2);
1214         else
1215                 cmd_size = sizeof(struct iwl_scan_config_v1);
1216         cmd_size += num_channels;
1217
1218         cfg = kzalloc(cmd_size, GFP_KERNEL);
1219         if (!cfg)
1220                 return -ENOMEM;
1221
1222         flags = SCAN_CONFIG_FLAG_ACTIVATE |
1223                  SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1224                  SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1225                  SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1226                  SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1227                  SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1228                  SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1229                  SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1230                  SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1231                  SCAN_CONFIG_N_CHANNELS(num_channels) |
1232                  (iwl_mvm_is_scan_fragmented(type) ?
1233                   SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1234                   SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1235
1236         channel_flags = IWL_CHANNEL_FLAG_EBS |
1237                         IWL_CHANNEL_FLAG_ACCURATE_EBS |
1238                         IWL_CHANNEL_FLAG_EBS_ADD |
1239                         IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1240
1241         /*
1242          * Check for fragmented scan on LMAC2 - high band.
1243          * LMAC1 - low band is checked above.
1244          */
1245         if (iwl_mvm_cdb_scan_api(mvm)) {
1246                 if (iwl_mvm_is_cdb_supported(mvm))
1247                         flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1248                                  SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1249                                  SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1250                 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1251                                             num_channels);
1252         } else {
1253                 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1254                                             num_channels);
1255         }
1256
1257         cmd.data[0] = cfg;
1258         cmd.len[0] = cmd_size;
1259         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1260
1261         IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1262
1263         ret = iwl_mvm_send_cmd(mvm, &cmd);
1264         if (!ret) {
1265                 mvm->scan_type = type;
1266                 mvm->hb_scan_type = hb_type;
1267         }
1268
1269         kfree(cfg);
1270         return ret;
1271 }
1272
1273 int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1274 {
1275         struct iwl_scan_config cfg;
1276         struct iwl_host_cmd cmd = {
1277                 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1278                 .len[0] = sizeof(cfg),
1279                 .data[0] = &cfg,
1280                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1281         };
1282
1283         if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1284                 return iwl_mvm_legacy_config_scan(mvm);
1285
1286         memset(&cfg, 0, sizeof(cfg));
1287
1288         cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1289         cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1290         cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1291
1292         IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1293
1294         return iwl_mvm_send_cmd(mvm, &cmd);
1295 }
1296
1297 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1298 {
1299         int i;
1300
1301         for (i = 0; i < mvm->max_scans; i++)
1302                 if (mvm->scan_uid_status[i] == status)
1303                         return i;
1304
1305         return -ENOENT;
1306 }
1307
1308 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1309                                     struct iwl_scan_req_umac *cmd,
1310                                     struct iwl_mvm_scan_params *params)
1311 {
1312         struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1313         u8 active_dwell, passive_dwell;
1314
1315         timing = &scan_timing[params->type];
1316         active_dwell = params->measurement_dwell ?
1317                 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
1318         passive_dwell = params->measurement_dwell ?
1319                 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
1320
1321         if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1322                 cmd->v7.adwell_default_n_aps_social =
1323                         IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1324                 cmd->v7.adwell_default_n_aps =
1325                         IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1326
1327                 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1328                         cmd->v9.adwell_default_hb_n_aps =
1329                                 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1330
1331                 /* if custom max budget was configured with debugfs */
1332                 if (IWL_MVM_ADWELL_MAX_BUDGET)
1333                         cmd->v7.adwell_max_budget =
1334                                 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1335                 else if (params->ssids && params->ssids[0].ssid_len)
1336                         cmd->v7.adwell_max_budget =
1337                                 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1338                 else
1339                         cmd->v7.adwell_max_budget =
1340                                 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1341
1342                 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1343                 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1344                         cpu_to_le32(timing->max_out_time);
1345                 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1346                         cpu_to_le32(timing->suspend_time);
1347
1348                 if (iwl_mvm_is_cdb_supported(mvm)) {
1349                         hb_timing = &scan_timing[params->hb_type];
1350
1351                         cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1352                                 cpu_to_le32(hb_timing->max_out_time);
1353                         cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1354                                 cpu_to_le32(hb_timing->suspend_time);
1355                 }
1356
1357                 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1358                         cmd->v7.active_dwell = active_dwell;
1359                         cmd->v7.passive_dwell = passive_dwell;
1360                         cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1361                 } else {
1362                         cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1363                         cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1364                         if (iwl_mvm_is_cdb_supported(mvm)) {
1365                                 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1366                                         active_dwell;
1367                                 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1368                                         passive_dwell;
1369                         }
1370                 }
1371         } else {
1372                 cmd->v1.extended_dwell = params->measurement_dwell ?
1373                         params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED;
1374                 cmd->v1.active_dwell = active_dwell;
1375                 cmd->v1.passive_dwell = passive_dwell;
1376                 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1377
1378                 if (iwl_mvm_is_cdb_supported(mvm)) {
1379                         hb_timing = &scan_timing[params->hb_type];
1380
1381                         cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1382                                         cpu_to_le32(hb_timing->max_out_time);
1383                         cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1384                                         cpu_to_le32(hb_timing->suspend_time);
1385                 }
1386
1387                 if (iwl_mvm_cdb_scan_api(mvm)) {
1388                         cmd->v6.scan_priority =
1389                                 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1390                         cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1391                                 cpu_to_le32(timing->max_out_time);
1392                         cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1393                                 cpu_to_le32(timing->suspend_time);
1394                 } else {
1395                         cmd->v1.scan_priority =
1396                                 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1397                         cmd->v1.max_out_time =
1398                                 cpu_to_le32(timing->max_out_time);
1399                         cmd->v1.suspend_time =
1400                                 cpu_to_le32(timing->suspend_time);
1401                 }
1402         }
1403
1404         if (iwl_mvm_is_regular_scan(params))
1405                 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1406         else
1407                 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1408 }
1409
1410 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1411 {
1412         return iwl_mvm_is_regular_scan(params) ?
1413                 IWL_SCAN_PRIORITY_EXT_6 :
1414                 IWL_SCAN_PRIORITY_EXT_2;
1415 }
1416
1417 static void
1418 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm,
1419                             struct iwl_scan_general_params_v10 *general_params,
1420                             struct iwl_mvm_scan_params *params)
1421 {
1422         struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1423         u8 active_dwell, passive_dwell;
1424
1425         timing = &scan_timing[params->type];
1426         active_dwell = params->measurement_dwell ?
1427                 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
1428         passive_dwell = params->measurement_dwell ?
1429                 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
1430
1431         general_params->adwell_default_social_chn =
1432                 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1433         general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1434         general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1435
1436         /* if custom max budget was configured with debugfs */
1437         if (IWL_MVM_ADWELL_MAX_BUDGET)
1438                 general_params->adwell_max_budget =
1439                         cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1440         else if (params->ssids && params->ssids[0].ssid_len)
1441                 general_params->adwell_max_budget =
1442                         cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1443         else
1444                 general_params->adwell_max_budget =
1445                         cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1446
1447         general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1448         general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1449                 cpu_to_le32(timing->max_out_time);
1450         general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1451                 cpu_to_le32(timing->suspend_time);
1452
1453         hb_timing = &scan_timing[params->hb_type];
1454
1455         general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1456                 cpu_to_le32(hb_timing->max_out_time);
1457         general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1458                 cpu_to_le32(hb_timing->suspend_time);
1459
1460         general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1461         general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1462         general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1463         general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1464 }
1465
1466 struct iwl_mvm_scan_channel_segment {
1467         u8 start_idx;
1468         u8 end_idx;
1469         u8 first_channel_id;
1470         u8 last_channel_id;
1471         u8 channel_spacing_shift;
1472         u8 band;
1473 };
1474
1475 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1476         {
1477                 .start_idx = 0,
1478                 .end_idx = 13,
1479                 .first_channel_id = 1,
1480                 .last_channel_id = 14,
1481                 .channel_spacing_shift = 0,
1482                 .band = PHY_BAND_24
1483         },
1484         {
1485                 .start_idx = 14,
1486                 .end_idx = 41,
1487                 .first_channel_id = 36,
1488                 .last_channel_id = 144,
1489                 .channel_spacing_shift = 2,
1490                 .band = PHY_BAND_5
1491         },
1492         {
1493                 .start_idx = 42,
1494                 .end_idx = 50,
1495                 .first_channel_id = 149,
1496                 .last_channel_id = 181,
1497                 .channel_spacing_shift = 2,
1498                 .band = PHY_BAND_5
1499         },
1500 };
1501
1502 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1503 {
1504         int i, index;
1505
1506         if (!channel_id)
1507                 return -EINVAL;
1508
1509         for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1510                 const struct iwl_mvm_scan_channel_segment *ch_segment =
1511                         &scan_channel_segments[i];
1512                 u32 ch_offset;
1513
1514                 if (ch_segment->band != band ||
1515                     ch_segment->first_channel_id > channel_id ||
1516                     ch_segment->last_channel_id < channel_id)
1517                         continue;
1518
1519                 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1520                         ch_segment->channel_spacing_shift;
1521
1522                 index = scan_channel_segments[i].start_idx + ch_offset;
1523                 if (index < IWL_SCAN_NUM_CHANNELS)
1524                         return index;
1525
1526                 break;
1527         }
1528
1529         return -EINVAL;
1530 }
1531
1532 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1533                                                u8 ch_id, u8 band, u8 *ch_bitmap,
1534                                                size_t bitmap_n_entries)
1535 {
1536         int i;
1537         static const u8 p2p_go_friendly_chs[] = {
1538                 36, 40, 44, 48, 149, 153, 157, 161, 165,
1539         };
1540
1541         if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1542                 return;
1543
1544         for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1545                 if (p2p_go_friendly_chs[i] == ch_id) {
1546                         int ch_idx, bitmap_idx;
1547
1548                         ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1549                         if (ch_idx < 0)
1550                                 return;
1551
1552                         bitmap_idx = ch_idx / 8;
1553                         if (bitmap_idx >= bitmap_n_entries)
1554                                 return;
1555
1556                         ch_idx = ch_idx % 8;
1557                         ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1558
1559                         return;
1560                 }
1561         }
1562 }
1563
1564 static void
1565 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1566                                struct ieee80211_channel **channels,
1567                                int n_channels, u32 flags,
1568                                struct iwl_scan_channel_cfg_umac *channel_cfg)
1569 {
1570         int i;
1571
1572         for (i = 0; i < n_channels; i++) {
1573                 channel_cfg[i].flags = cpu_to_le32(flags);
1574                 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1575                 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1576                         enum nl80211_band band = channels[i]->band;
1577
1578                         channel_cfg[i].v2.band =
1579                                 iwl_mvm_phy_band_from_nl80211(band);
1580                         channel_cfg[i].v2.iter_count = 1;
1581                         channel_cfg[i].v2.iter_interval = 0;
1582                 } else {
1583                         channel_cfg[i].v1.iter_count = 1;
1584                         channel_cfg[i].v1.iter_interval = 0;
1585                 }
1586         }
1587 }
1588
1589 static void
1590 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1591                                   struct ieee80211_channel **channels,
1592                                   struct iwl_scan_channel_params_v4 *cp,
1593                                   int n_channels, u32 flags,
1594                                   enum nl80211_iftype vif_type)
1595 {
1596         u8 *bitmap = cp->adwell_ch_override_bitmap;
1597         size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1598         int i;
1599
1600         for (i = 0; i < n_channels; i++) {
1601                 enum nl80211_band band = channels[i]->band;
1602                 struct iwl_scan_channel_cfg_umac *cfg =
1603                         &cp->channel_config[i];
1604
1605                 cfg->flags = cpu_to_le32(flags);
1606                 cfg->v2.channel_num = channels[i]->hw_value;
1607                 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1608                 cfg->v2.iter_count = 1;
1609                 cfg->v2.iter_interval = 0;
1610
1611                 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1612                                                    cfg->v2.channel_num,
1613                                                    cfg->v2.band, bitmap,
1614                                                    bitmap_n_entries);
1615         }
1616 }
1617
1618 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1619                                           struct iwl_mvm_scan_params *params,
1620                                           struct ieee80211_vif *vif)
1621 {
1622         u8 flags = 0;
1623
1624         flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1625
1626         if (iwl_mvm_scan_use_ebs(mvm, vif))
1627                 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1628                         IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1629                         IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1630
1631         /* set fragmented ebs for fragmented scan on HB channels */
1632         if (iwl_mvm_is_scan_fragmented(params->hb_type))
1633                 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1634
1635         return flags;
1636 }
1637
1638 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
1639                                       struct iwl_mvm_scan_params *params,
1640                                       struct ieee80211_vif *vif,
1641                                       int type)
1642 {
1643         u16 flags = 0;
1644
1645         if (params->n_ssids == 0)
1646                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
1647
1648         if (iwl_mvm_is_scan_fragmented(params->type))
1649                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
1650
1651         if (iwl_mvm_is_scan_fragmented(params->hb_type))
1652                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
1653
1654         if (params->pass_all)
1655                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
1656         else
1657                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
1658
1659         if (!iwl_mvm_is_regular_scan(params))
1660                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
1661
1662         if (params->measurement_dwell ||
1663             mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1664                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
1665
1666         if (IWL_MVM_ADWELL_ENABLE)
1667                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
1668
1669         if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1670                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
1671
1672         return flags;
1673 }
1674
1675 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
1676                                    struct iwl_mvm_scan_params *params,
1677                                    struct ieee80211_vif *vif)
1678 {
1679         u16 flags = 0;
1680
1681         if (params->n_ssids == 0)
1682                 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
1683
1684         if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
1685                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
1686
1687         if (iwl_mvm_is_scan_fragmented(params->type))
1688                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
1689
1690         if (iwl_mvm_is_cdb_supported(mvm) &&
1691             iwl_mvm_is_scan_fragmented(params->hb_type))
1692                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
1693
1694         if (iwl_mvm_rrm_scan_needed(mvm) &&
1695             fw_has_capa(&mvm->fw->ucode_capa,
1696                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
1697                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
1698
1699         if (params->pass_all)
1700                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
1701         else
1702                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
1703
1704         if (!iwl_mvm_is_regular_scan(params))
1705                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
1706
1707         if (params->measurement_dwell)
1708                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1709
1710 #ifdef CONFIG_IWLWIFI_DEBUGFS
1711         if (mvm->scan_iter_notif_enabled)
1712                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1713 #endif
1714
1715         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1716                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1717
1718         if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
1719                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
1720
1721         /*
1722          * Extended dwell is relevant only for low band to start with, as it is
1723          * being used for social channles only (1, 6, 11), so we can check
1724          * only scan type on low band also for CDB.
1725          */
1726         if (iwl_mvm_is_regular_scan(params) &&
1727             vif->type != NL80211_IFTYPE_P2P_DEVICE &&
1728             !iwl_mvm_is_scan_fragmented(params->type) &&
1729             !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
1730             !iwl_mvm_is_oce_supported(mvm))
1731                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
1732
1733         if (iwl_mvm_is_oce_supported(mvm)) {
1734                 if ((params->flags &
1735                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
1736                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
1737                 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
1738                  * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
1739                  * the same bit, we need to make sure that we use this bit here
1740                  * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
1741                  * used. */
1742                 if ((params->flags &
1743                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
1744                      !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
1745                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
1746                 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
1747                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
1748         }
1749
1750         return flags;
1751 }
1752
1753 static int
1754 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
1755                                struct iwl_scan_umac_schedule *schedule,
1756                                __le16 *delay)
1757 {
1758         int i;
1759         if (WARN_ON(!params->n_scan_plans ||
1760                     params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1761                 return -EINVAL;
1762
1763         for (i = 0; i < params->n_scan_plans; i++) {
1764                 struct cfg80211_sched_scan_plan *scan_plan =
1765                         &params->scan_plans[i];
1766
1767                 schedule[i].iter_count = scan_plan->iterations;
1768                 schedule[i].interval =
1769                         cpu_to_le16(scan_plan->interval);
1770         }
1771
1772         /*
1773          * If the number of iterations of the last scan plan is set to
1774          * zero, it should run infinitely. However, this is not always the case.
1775          * For example, when regular scan is requested the driver sets one scan
1776          * plan with one iteration.
1777          */
1778         if (!schedule[params->n_scan_plans - 1].iter_count)
1779                 schedule[params->n_scan_plans - 1].iter_count = 0xff;
1780
1781         *delay = cpu_to_le16(params->delay);
1782
1783         return 0;
1784 }
1785
1786 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1787                              struct iwl_mvm_scan_params *params,
1788                              int type, int uid)
1789 {
1790         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
1791         struct iwl_scan_umac_chan_param *chan_param;
1792         void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
1793         void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
1794                 mvm->fw->ucode_capa.n_scan_channels;
1795         struct iwl_scan_req_umac_tail_v2 *tail_v2 =
1796                 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
1797         struct iwl_scan_req_umac_tail_v1 *tail_v1;
1798         struct iwl_ssid_ie *direct_scan;
1799         int ret = 0;
1800         u32 ssid_bitmap = 0;
1801         u8 channel_flags = 0;
1802         u16 gen_flags;
1803         struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1804
1805         chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
1806
1807         iwl_mvm_scan_umac_dwell(mvm, cmd, params);
1808
1809         mvm->scan_uid_status[uid] = type;
1810
1811         cmd->uid = cpu_to_le32(uid);
1812         gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
1813         cmd->general_flags = cpu_to_le16(gen_flags);
1814         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1815                 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
1816                         cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
1817                                                         IWL_SCAN_NUM_OF_FRAGS;
1818                 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
1819                         cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
1820                                                         IWL_SCAN_NUM_OF_FRAGS;
1821
1822                 cmd->v8.general_flags2 =
1823                         IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
1824         }
1825
1826         cmd->scan_start_mac_id = scan_vif->id;
1827
1828         if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1829                 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
1830
1831         if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1832                 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
1833                                 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1834                                 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1835
1836                 /* set fragmented ebs for fragmented scan on HB channels */
1837                 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
1838                         if (gen_flags &
1839                             IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
1840                             (!iwl_mvm_is_cdb_supported(mvm) &&
1841                              gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
1842                                 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1843                 }
1844         }
1845
1846         chan_param->flags = channel_flags;
1847         chan_param->count = params->n_channels;
1848
1849         ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
1850                                              &tail_v2->delay);
1851         if (ret)
1852                 return ret;
1853
1854         if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1855                 tail_v2->preq = params->preq;
1856                 direct_scan = tail_v2->direct_scan;
1857         } else {
1858                 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
1859                 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
1860                                                   &params->preq);
1861                 direct_scan = tail_v1->direct_scan;
1862         }
1863         iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
1864         iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1865                                        params->n_channels, ssid_bitmap,
1866                                        cmd_data);
1867         return 0;
1868 }
1869
1870 static void
1871 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm,
1872                                      struct iwl_mvm_scan_params *params,
1873                                      struct ieee80211_vif *vif,
1874                                      struct iwl_scan_general_params_v10 *gp,
1875                                      u16 gen_flags)
1876 {
1877         struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1878
1879         iwl_mvm_scan_umac_dwell_v10(mvm, gp, params);
1880
1881         gp->flags = cpu_to_le16(gen_flags);
1882
1883         if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
1884                 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1885         if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
1886                 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1887
1888         gp->scan_start_mac_id = scan_vif->id;
1889 }
1890
1891 static void
1892 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
1893                                   struct iwl_scan_probe_params_v3 *pp)
1894 {
1895         pp->preq = params->preq;
1896         pp->ssid_num = params->n_ssids;
1897         iwl_scan_build_ssids(params, pp->direct_scan, NULL);
1898 }
1899
1900 static void
1901 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
1902                                   struct iwl_scan_probe_params_v4 *pp,
1903                                   u32 *bitmap_ssid)
1904 {
1905         pp->preq = params->preq;
1906         iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
1907 }
1908
1909 static void
1910 iwl_mvm_scan_umac_fill_ch_p_v3(struct iwl_mvm *mvm,
1911                                struct iwl_mvm_scan_params *params,
1912                                struct ieee80211_vif *vif,
1913                                struct iwl_scan_channel_params_v3 *cp)
1914 {
1915         cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
1916         cp->count = params->n_channels;
1917
1918         iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1919                                        params->n_channels, 0,
1920                                        cp->channel_config);
1921 }
1922
1923 static void
1924 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
1925                                struct iwl_mvm_scan_params *params,
1926                                struct ieee80211_vif *vif,
1927                                struct iwl_scan_channel_params_v4 *cp,
1928                                u32 channel_cfg_flags)
1929 {
1930         cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
1931         cp->count = params->n_channels;
1932         cp->num_of_aps_override = IWL_SCAN_ADWELL_DEFAULT_N_APS_OVERRIDE;
1933
1934         iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
1935                                           params->n_channels,
1936                                           channel_cfg_flags,
1937                                           vif->type);
1938 }
1939
1940 static int iwl_mvm_scan_umac_v11(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1941                                  struct iwl_mvm_scan_params *params, int type,
1942                                  int uid)
1943 {
1944         struct iwl_scan_req_umac_v11 *cmd = mvm->scan_cmd;
1945         struct iwl_scan_req_params_v11 *scan_p = &cmd->scan_params;
1946         int ret;
1947         u16 gen_flags;
1948
1949         mvm->scan_uid_status[uid] = type;
1950
1951         cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
1952         cmd->uid = cpu_to_le32(uid);
1953
1954         gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
1955         iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
1956                                              &scan_p->general_params,
1957                                              gen_flags);
1958
1959          ret = iwl_mvm_fill_scan_sched_params(params,
1960                                               scan_p->periodic_params.schedule,
1961                                               &scan_p->periodic_params.delay);
1962         if (ret)
1963                 return ret;
1964
1965         iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
1966         iwl_mvm_scan_umac_fill_ch_p_v3(mvm, params, vif,
1967                                        &scan_p->channel_params);
1968
1969         return 0;
1970 }
1971
1972 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1973                                  struct iwl_mvm_scan_params *params, int type,
1974                                  int uid)
1975 {
1976         struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
1977         struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
1978         int ret;
1979         u16 gen_flags;
1980
1981         mvm->scan_uid_status[uid] = type;
1982
1983         cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
1984         cmd->uid = cpu_to_le32(uid);
1985
1986         gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
1987         iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
1988                                              &scan_p->general_params,
1989                                              gen_flags);
1990
1991          ret = iwl_mvm_fill_scan_sched_params(params,
1992                                               scan_p->periodic_params.schedule,
1993                                               &scan_p->periodic_params.delay);
1994         if (ret)
1995                 return ret;
1996
1997         iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
1998         iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
1999                                        &scan_p->channel_params, 0);
2000
2001         return 0;
2002 }
2003
2004 static int iwl_mvm_scan_umac_v13(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2005                                  struct iwl_mvm_scan_params *params, int type,
2006                                  int uid)
2007 {
2008         struct iwl_scan_req_umac_v13 *cmd = mvm->scan_cmd;
2009         struct iwl_scan_req_params_v13 *scan_p = &cmd->scan_params;
2010         int ret;
2011         u16 gen_flags;
2012         u32 bitmap_ssid = 0;
2013
2014         mvm->scan_uid_status[uid] = type;
2015
2016         cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2017         cmd->uid = cpu_to_le32(uid);
2018
2019         gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2020         iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2021                                              &scan_p->general_params,
2022                                              gen_flags);
2023
2024          ret = iwl_mvm_fill_scan_sched_params(params,
2025                                               scan_p->periodic_params.schedule,
2026                                               &scan_p->periodic_params.delay);
2027         if (ret)
2028                 return ret;
2029
2030         iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2031                                           &bitmap_ssid);
2032         iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2033                                        &scan_p->channel_params, bitmap_ssid);
2034
2035         return 0;
2036 }
2037
2038 static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2039 {
2040         return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2041 }
2042
2043 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2044 {
2045         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2046                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2047
2048         /* This looks a bit arbitrary, but the idea is that if we run
2049          * out of possible simultaneous scans and the userspace is
2050          * trying to run a scan type that is already running, we
2051          * return -EBUSY.  But if the userspace wants to start a
2052          * different type of scan, we stop the opposite type to make
2053          * space for the new request.  The reason is backwards
2054          * compatibility with old wpa_supplicant that wouldn't stop a
2055          * scheduled scan before starting a normal scan.
2056          */
2057
2058         /* FW supports only a single periodic scan */
2059         if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2060             mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2061                 return -EBUSY;
2062
2063         if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2064                 return 0;
2065
2066         /* Use a switch, even though this is a bitmask, so that more
2067          * than one bits set will fall in default and we will warn.
2068          */
2069         switch (type) {
2070         case IWL_MVM_SCAN_REGULAR:
2071                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2072                         return -EBUSY;
2073                 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2074         case IWL_MVM_SCAN_SCHED:
2075                 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2076                         return -EBUSY;
2077                 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2078         case IWL_MVM_SCAN_NETDETECT:
2079                 /* For non-unified images, there's no need to stop
2080                  * anything for net-detect since the firmware is
2081                  * restarted anyway.  This way, any sched scans that
2082                  * were running will be restarted when we resume.
2083                  */
2084                 if (!unified_image)
2085                         return 0;
2086
2087                 /* If this is a unified image and we ran out of scans,
2088                  * we need to stop something.  Prefer stopping regular
2089                  * scans, because the results are useless at this
2090                  * point, and we should be able to keep running
2091                  * another scheduled scan while suspended.
2092                  */
2093                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2094                         return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2095                                                  true);
2096                 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2097                         return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2098                                                  true);
2099                 /* Something is wrong if no scan was running but we
2100                  * ran out of scans.
2101                  */
2102                 /* fall through */
2103         default:
2104                 WARN_ON(1);
2105                 break;
2106         }
2107
2108         return -EIO;
2109 }
2110
2111 #define SCAN_TIMEOUT 20000
2112
2113 void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2114 {
2115         struct delayed_work *delayed_work = to_delayed_work(work);
2116         struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2117                                            scan_timeout_dwork);
2118
2119         IWL_ERR(mvm, "regular scan timed out\n");
2120
2121         iwl_force_nmi(mvm->trans);
2122 }
2123
2124 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2125                                    struct iwl_mvm_scan_params *params,
2126                                    struct ieee80211_vif *vif)
2127 {
2128         if (iwl_mvm_is_cdb_supported(mvm)) {
2129                 params->type =
2130                         iwl_mvm_get_scan_type_band(mvm, vif,
2131                                                    NL80211_BAND_2GHZ);
2132                 params->hb_type =
2133                         iwl_mvm_get_scan_type_band(mvm, vif,
2134                                                    NL80211_BAND_5GHZ);
2135         } else {
2136                 params->type = iwl_mvm_get_scan_type(mvm, vif);
2137         }
2138 }
2139
2140 struct iwl_scan_umac_handler {
2141         u8 version;
2142         int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2143                        struct iwl_mvm_scan_params *params, int type, int uid);
2144 };
2145
2146 #define IWL_SCAN_UMAC_HANDLER(_ver) {           \
2147         .version = _ver,                        \
2148         .handler = iwl_mvm_scan_umac_v##_ver,   \
2149 }
2150
2151 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2152         /* set the newest version first to shorten the list traverse time */
2153         IWL_SCAN_UMAC_HANDLER(13),
2154         IWL_SCAN_UMAC_HANDLER(12),
2155         IWL_SCAN_UMAC_HANDLER(11),
2156 };
2157
2158 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2159                                   struct ieee80211_vif *vif,
2160                                   struct iwl_host_cmd *hcmd,
2161                                   struct iwl_mvm_scan_params *params,
2162                                   int type)
2163 {
2164         int uid, i;
2165         u8 scan_ver;
2166
2167         lockdep_assert_held(&mvm->mutex);
2168         memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd));
2169
2170         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2171                 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2172
2173                 return iwl_mvm_scan_lmac(mvm, vif, params);
2174         }
2175
2176         uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2177         if (uid < 0)
2178                 return uid;
2179
2180         hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
2181
2182         scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2183                                           SCAN_REQ_UMAC);
2184
2185         for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2186                 const struct iwl_scan_umac_handler *ver_handler =
2187                         &iwl_scan_umac_handlers[i];
2188
2189                 if (ver_handler->version != scan_ver)
2190                         continue;
2191
2192                 return ver_handler->handler(mvm, vif, params, type, uid);
2193         }
2194
2195         return iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2196 }
2197
2198 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2199                            struct cfg80211_scan_request *req,
2200                            struct ieee80211_scan_ies *ies)
2201 {
2202         struct iwl_host_cmd hcmd = {
2203                 .len = { iwl_mvm_scan_size(mvm), },
2204                 .data = { mvm->scan_cmd, },
2205                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2206         };
2207         struct iwl_mvm_scan_params params = {};
2208         int ret;
2209         struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2210
2211         lockdep_assert_held(&mvm->mutex);
2212
2213         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2214                 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2215                 return -EBUSY;
2216         }
2217
2218         ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2219         if (ret)
2220                 return ret;
2221
2222         /* we should have failed registration if scan_cmd was NULL */
2223         if (WARN_ON(!mvm->scan_cmd))
2224                 return -ENOMEM;
2225
2226         if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2227                 return -ENOBUFS;
2228
2229         params.n_ssids = req->n_ssids;
2230         params.flags = req->flags;
2231         params.n_channels = req->n_channels;
2232         params.delay = 0;
2233         params.ssids = req->ssids;
2234         params.channels = req->channels;
2235         params.mac_addr = req->mac_addr;
2236         params.mac_addr_mask = req->mac_addr_mask;
2237         params.no_cck = req->no_cck;
2238         params.pass_all = true;
2239         params.n_match_sets = 0;
2240         params.match_sets = NULL;
2241
2242         params.scan_plans = &scan_plan;
2243         params.n_scan_plans = 1;
2244
2245         iwl_mvm_fill_scan_type(mvm, &params, vif);
2246
2247         ret = iwl_mvm_get_measurement_dwell(mvm, req, &params);
2248         if (ret < 0)
2249                 return ret;
2250
2251         params.measurement_dwell = ret;
2252
2253         iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2254
2255         ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params,
2256                                      IWL_MVM_SCAN_REGULAR);
2257
2258         if (ret)
2259                 return ret;
2260
2261         iwl_mvm_pause_tcm(mvm, false);
2262
2263         ret = iwl_mvm_send_cmd(mvm, &hcmd);
2264         if (ret) {
2265                 /* If the scan failed, it usually means that the FW was unable
2266                  * to allocate the time events. Warn on it, but maybe we
2267                  * should try to send the command again with different params.
2268                  */
2269                 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2270                 iwl_mvm_resume_tcm(mvm);
2271                 return ret;
2272         }
2273
2274         IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2275         mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2276         mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2277
2278         schedule_delayed_work(&mvm->scan_timeout_dwork,
2279                               msecs_to_jiffies(SCAN_TIMEOUT));
2280
2281         return 0;
2282 }
2283
2284 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2285                              struct ieee80211_vif *vif,
2286                              struct cfg80211_sched_scan_request *req,
2287                              struct ieee80211_scan_ies *ies,
2288                              int type)
2289 {
2290         struct iwl_host_cmd hcmd = {
2291                 .len = { iwl_mvm_scan_size(mvm), },
2292                 .data = { mvm->scan_cmd, },
2293                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2294         };
2295         struct iwl_mvm_scan_params params = {};
2296         int ret;
2297
2298         lockdep_assert_held(&mvm->mutex);
2299
2300         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2301                 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2302                 return -EBUSY;
2303         }
2304
2305         ret = iwl_mvm_check_running_scans(mvm, type);
2306         if (ret)
2307                 return ret;
2308
2309         /* we should have failed registration if scan_cmd was NULL */
2310         if (WARN_ON(!mvm->scan_cmd))
2311                 return -ENOMEM;
2312
2313         if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2314                 return -ENOBUFS;
2315
2316         params.n_ssids = req->n_ssids;
2317         params.flags = req->flags;
2318         params.n_channels = req->n_channels;
2319         params.ssids = req->ssids;
2320         params.channels = req->channels;
2321         params.mac_addr = req->mac_addr;
2322         params.mac_addr_mask = req->mac_addr_mask;
2323         params.no_cck = false;
2324         params.pass_all =  iwl_mvm_scan_pass_all(mvm, req);
2325         params.n_match_sets = req->n_match_sets;
2326         params.match_sets = req->match_sets;
2327         if (!req->n_scan_plans)
2328                 return -EINVAL;
2329
2330         params.n_scan_plans = req->n_scan_plans;
2331         params.scan_plans = req->scan_plans;
2332
2333         iwl_mvm_fill_scan_type(mvm, &params, vif);
2334
2335         /* In theory, LMAC scans can handle a 32-bit delay, but since
2336          * waiting for over 18 hours to start the scan is a bit silly
2337          * and to keep it aligned with UMAC scans (which only support
2338          * 16-bit delays), trim it down to 16-bits.
2339          */
2340         if (req->delay > U16_MAX) {
2341                 IWL_DEBUG_SCAN(mvm,
2342                                "delay value is > 16-bits, set to max possible\n");
2343                 params.delay = U16_MAX;
2344         } else {
2345                 params.delay = req->delay;
2346         }
2347
2348         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2349         if (ret)
2350                 return ret;
2351
2352         iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2353
2354         ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
2355
2356         if (ret)
2357                 return ret;
2358
2359         ret = iwl_mvm_send_cmd(mvm, &hcmd);
2360         if (!ret) {
2361                 IWL_DEBUG_SCAN(mvm,
2362                                "Sched scan request was sent successfully\n");
2363                 mvm->scan_status |= type;
2364         } else {
2365                 /* If the scan failed, it usually means that the FW was unable
2366                  * to allocate the time events. Warn on it, but maybe we
2367                  * should try to send the command again with different params.
2368                  */
2369                 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2370         }
2371
2372         return ret;
2373 }
2374
2375 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2376                                          struct iwl_rx_cmd_buffer *rxb)
2377 {
2378         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2379         struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2380         u32 uid = __le32_to_cpu(notif->uid);
2381         bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2382
2383         if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2384                 return;
2385
2386         /* if the scan is already stopping, we don't need to notify mac80211 */
2387         if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2388                 struct cfg80211_scan_info info = {
2389                         .aborted = aborted,
2390                         .scan_start_tsf = mvm->scan_start,
2391                 };
2392
2393                 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2394                 ieee80211_scan_completed(mvm->hw, &info);
2395                 mvm->scan_vif = NULL;
2396                 cancel_delayed_work(&mvm->scan_timeout_dwork);
2397                 iwl_mvm_resume_tcm(mvm);
2398         } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2399                 ieee80211_sched_scan_stopped(mvm->hw);
2400                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2401         }
2402
2403         mvm->scan_status &= ~mvm->scan_uid_status[uid];
2404         IWL_DEBUG_SCAN(mvm,
2405                        "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2406                        uid, mvm->scan_uid_status[uid],
2407                        notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2408                                 "completed" : "aborted",
2409                        iwl_mvm_ebs_status_str(notif->ebs_status));
2410         IWL_DEBUG_SCAN(mvm,
2411                        "Last line %d, Last iteration %d, Time from last iteration %d\n",
2412                        notif->last_schedule, notif->last_iter,
2413                        __le32_to_cpu(notif->time_from_last_iter));
2414
2415         if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
2416             notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
2417                 mvm->last_ebs_successful = false;
2418
2419         mvm->scan_uid_status[uid] = 0;
2420 }
2421
2422 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
2423                                               struct iwl_rx_cmd_buffer *rxb)
2424 {
2425         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2426         struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
2427
2428         mvm->scan_start = le64_to_cpu(notif->start_tsf);
2429
2430         IWL_DEBUG_SCAN(mvm,
2431                        "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
2432                        notif->status, notif->scanned_channels);
2433
2434         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
2435                 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
2436                 ieee80211_sched_scan_results(mvm->hw);
2437                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
2438         }
2439
2440         IWL_DEBUG_SCAN(mvm,
2441                        "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
2442                        mvm->scan_start);
2443 }
2444
2445 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
2446 {
2447         struct iwl_umac_scan_abort cmd = {};
2448         int uid, ret;
2449
2450         lockdep_assert_held(&mvm->mutex);
2451
2452         /* We should always get a valid index here, because we already
2453          * checked that this type of scan was running in the generic
2454          * code.
2455          */
2456         uid = iwl_mvm_scan_uid_by_status(mvm, type);
2457         if (WARN_ON_ONCE(uid < 0))
2458                 return uid;
2459
2460         cmd.uid = cpu_to_le32(uid);
2461
2462         IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
2463
2464         ret = iwl_mvm_send_cmd_pdu(mvm,
2465                                    iwl_cmd_id(SCAN_ABORT_UMAC,
2466                                               IWL_ALWAYS_LONG_GROUP, 0),
2467                                    0, sizeof(cmd), &cmd);
2468         if (!ret)
2469                 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
2470
2471         return ret;
2472 }
2473
2474 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
2475 {
2476         struct iwl_notification_wait wait_scan_done;
2477         static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
2478                                               SCAN_OFFLOAD_COMPLETE, };
2479         int ret;
2480
2481         lockdep_assert_held(&mvm->mutex);
2482
2483         iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
2484                                    scan_done_notif,
2485                                    ARRAY_SIZE(scan_done_notif),
2486                                    NULL, NULL);
2487
2488         IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
2489
2490         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2491                 ret = iwl_mvm_umac_scan_abort(mvm, type);
2492         else
2493                 ret = iwl_mvm_lmac_scan_abort(mvm);
2494
2495         if (ret) {
2496                 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
2497                 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
2498                 return ret;
2499         }
2500
2501         return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
2502                                      1 * HZ);
2503 }
2504
2505 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) {                           \
2506         case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver);   \
2507 }
2508
2509 static int iwl_scan_req_umac_get_size(u8 scan_ver)
2510 {
2511         switch (scan_ver) {
2512                 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(13);
2513                 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12);
2514                 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(11);
2515         }
2516
2517         return 0;
2518 }
2519
2520 int iwl_mvm_scan_size(struct iwl_mvm *mvm)
2521 {
2522         int base_size, tail_size;
2523         u8 scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2524                                              SCAN_REQ_UMAC);
2525
2526         base_size = iwl_scan_req_umac_get_size(scan_ver);
2527         if (base_size)
2528                 return base_size;
2529
2530
2531         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
2532                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
2533         else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
2534                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
2535         else if (iwl_mvm_cdb_scan_api(mvm))
2536                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
2537         else
2538                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
2539
2540         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2541                 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
2542                         tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
2543                 else
2544                         tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
2545
2546                 return base_size +
2547                         sizeof(struct iwl_scan_channel_cfg_umac) *
2548                                 mvm->fw->ucode_capa.n_scan_channels +
2549                         tail_size;
2550         }
2551         return sizeof(struct iwl_scan_req_lmac) +
2552                 sizeof(struct iwl_scan_channel_cfg_lmac) *
2553                 mvm->fw->ucode_capa.n_scan_channels +
2554                 sizeof(struct iwl_scan_probe_req_v1);
2555 }
2556
2557 /*
2558  * This function is used in nic restart flow, to inform mac80211 about scans
2559  * that was aborted by restart flow or by an assert.
2560  */
2561 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
2562 {
2563         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2564                 int uid, i;
2565
2566                 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
2567                 if (uid >= 0) {
2568                         struct cfg80211_scan_info info = {
2569                                 .aborted = true,
2570                         };
2571
2572                         ieee80211_scan_completed(mvm->hw, &info);
2573                         mvm->scan_uid_status[uid] = 0;
2574                 }
2575                 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
2576                 if (uid >= 0 && !mvm->fw_restart) {
2577                         ieee80211_sched_scan_stopped(mvm->hw);
2578                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2579                         mvm->scan_uid_status[uid] = 0;
2580                 }
2581
2582                 /* We shouldn't have any UIDs still set.  Loop over all the
2583                  * UIDs to make sure there's nothing left there and warn if
2584                  * any is found.
2585                  */
2586                 for (i = 0; i < mvm->max_scans; i++) {
2587                         if (WARN_ONCE(mvm->scan_uid_status[i],
2588                                       "UMAC scan UID %d status was not cleaned\n",
2589                                       i))
2590                                 mvm->scan_uid_status[i] = 0;
2591                 }
2592         } else {
2593                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
2594                         struct cfg80211_scan_info info = {
2595                                 .aborted = true,
2596                         };
2597
2598                         ieee80211_scan_completed(mvm->hw, &info);
2599                 }
2600
2601                 /* Sched scan will be restarted by mac80211 in
2602                  * restart_hw, so do not report if FW is about to be
2603                  * restarted.
2604                  */
2605                 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2606                     !mvm->fw_restart) {
2607                         ieee80211_sched_scan_stopped(mvm->hw);
2608                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2609                 }
2610         }
2611 }
2612
2613 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
2614 {
2615         int ret;
2616
2617         if (!(mvm->scan_status & type))
2618                 return 0;
2619
2620         if (iwl_mvm_is_radio_killed(mvm)) {
2621                 ret = 0;
2622                 goto out;
2623         }
2624
2625         ret = iwl_mvm_scan_stop_wait(mvm, type);
2626         if (!ret)
2627                 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
2628 out:
2629         /* Clear the scan status so the next scan requests will
2630          * succeed and mark the scan as stopping, so that the Rx
2631          * handler doesn't do anything, as the scan was stopped from
2632          * above.
2633          */
2634         mvm->scan_status &= ~type;
2635
2636         if (type == IWL_MVM_SCAN_REGULAR) {
2637                 cancel_delayed_work(&mvm->scan_timeout_dwork);
2638                 if (notify) {
2639                         struct cfg80211_scan_info info = {
2640                                 .aborted = true,
2641                         };
2642
2643                         ieee80211_scan_completed(mvm->hw, &info);
2644                 }
2645         } else if (notify) {
2646                 ieee80211_sched_scan_stopped(mvm->hw);
2647                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2648         }
2649
2650         return ret;
2651 }