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

   1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
   4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6  */
   7 #include <linux/etherdevice.h>
   8 #include <net/mac80211.h>
   9 #include <linux/crc32.h>
  10
  11 #include "mvm.h"
  12 #include "fw/api/scan.h"
  13 #include "iwl-io.h"
  14
  15 #define IWL_DENSE_EBS_SCAN_RATIO 5
  16 #define IWL_SPARSE_EBS_SCAN_RATIO 1
  17
  18 #define IWL_SCAN_DWELL_ACTIVE           10
  19 #define IWL_SCAN_DWELL_PASSIVE          110
  20 #define IWL_SCAN_DWELL_FRAGMENTED       44
  21 #define IWL_SCAN_DWELL_EXTENDED         90
  22 #define IWL_SCAN_NUM_OF_FRAGS           3
  23
  24 /* adaptive dwell max budget time [TU] for full scan */
  25 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
  26 /* adaptive dwell max budget time [TU] for directed scan */
  27 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
  28 /* adaptive dwell default high band APs number */
  29 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
  30 /* adaptive dwell default low band APs number */
  31 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
  32 /* adaptive dwell default APs number in social channels (1, 6, 11) */
  33 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
  34 /* number of scan channels */
  35 #define IWL_SCAN_NUM_CHANNELS 112
  36 /* adaptive dwell number of APs override mask for p2p friendly GO */
  37 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
  38 /* adaptive dwell number of APs override mask for social channels */
  39 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
  40 /* adaptive dwell number of APs override for p2p friendly GO channels */
  41 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
  42 /* adaptive dwell number of APs override for social channels */
  43 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
  44
  45 /* minimal number of 2GHz and 5GHz channels in the regular scan request */
  46 #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4
  47
  48 /* Number of iterations on the channel for mei filtered scan */
  49 #define IWL_MEI_SCAN_NUM_ITER   5U
  50
  51 #define WFA_TPC_IE_LEN  9
  52
  53 struct iwl_mvm_scan_timing_params {
  54         u32 suspend_time;
  55         u32 max_out_time;
  56 };
  57
  58 static struct iwl_mvm_scan_timing_params scan_timing[] = {
  59         [IWL_SCAN_TYPE_UNASSOC] = {
  60                 .suspend_time = 0,
  61                 .max_out_time = 0,
  62         },
  63         [IWL_SCAN_TYPE_WILD] = {
  64                 .suspend_time = 30,
  65                 .max_out_time = 120,
  66         },
  67         [IWL_SCAN_TYPE_MILD] = {
  68                 .suspend_time = 120,
  69                 .max_out_time = 120,
  70         },
  71         [IWL_SCAN_TYPE_FRAGMENTED] = {
  72                 .suspend_time = 95,
  73                 .max_out_time = 44,
  74         },
  75         [IWL_SCAN_TYPE_FAST_BALANCE] = {
  76                 .suspend_time = 30,
  77                 .max_out_time = 37,
  78         },
  79 };
  80
  81 struct iwl_mvm_scan_params {
  82         /* For CDB this is low band scan type, for non-CDB - type. */
  83         enum iwl_mvm_scan_type type;
  84         enum iwl_mvm_scan_type hb_type;
  85         u32 n_channels;
  86         u16 delay;
  87         int n_ssids;
  88         struct cfg80211_ssid *ssids;
  89         struct ieee80211_channel **channels;
  90         u32 flags;
  91         u8 *mac_addr;
  92         u8 *mac_addr_mask;
  93         bool no_cck;
  94         bool pass_all;
  95         int n_match_sets;
  96         struct iwl_scan_probe_req preq;
  97         struct cfg80211_match_set *match_sets;
  98         int n_scan_plans;
  99         struct cfg80211_sched_scan_plan *scan_plans;
 100         bool iter_notif;
 101         struct cfg80211_scan_6ghz_params *scan_6ghz_params;
 102         u32 n_6ghz_params;
 103         bool scan_6ghz;
 104         bool enable_6ghz_passive;
 105         bool respect_p2p_go, respect_p2p_go_hb;
 106         s8 tsf_report_link_id;
 107         u8 bssid[ETH_ALEN] __aligned(2);
 108 };
 109
 110 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 111 {
 112         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 113
 114         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 115                 return (void *)&cmd->v8.data;
 116
 117         if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 118                 return (void *)&cmd->v7.data;
 119
 120         if (iwl_mvm_cdb_scan_api(mvm))
 121                 return (void *)&cmd->v6.data;
 122
 123         return (void *)&cmd->v1.data;
 124 }
 125
 126 static inline struct iwl_scan_umac_chan_param *
 127 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
 128 {
 129         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 130
 131         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 132                 return &cmd->v8.channel;
 133
 134         if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 135                 return &cmd->v7.channel;
 136
 137         if (iwl_mvm_cdb_scan_api(mvm))
 138                 return &cmd->v6.channel;
 139
 140         return &cmd->v1.channel;
 141 }
 142
 143 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 144 {
 145         if (mvm->scan_rx_ant != ANT_NONE)
 146                 return mvm->scan_rx_ant;
 147         return iwl_mvm_get_valid_rx_ant(mvm);
 148 }
 149
 150 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
 151 {
 152         u16 rx_chain;
 153         u8 rx_ant;
 154
 155         rx_ant = iwl_mvm_scan_rx_ant(mvm);
 156         rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
 157         rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
 158         rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
 159         rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
 160         return cpu_to_le16(rx_chain);
 161 }
 162
 163 static inline __le32
 164 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
 165                           bool no_cck)
 166 {
 167         u32 tx_ant;
 168
 169         iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
 170         tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
 171
 172         if (band == NL80211_BAND_2GHZ && !no_cck)
 173                 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 |
 174                                    tx_ant);
 175         else
 176                 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
 177 }
 178
 179 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
 180 {
 181         return mvm->tcm.result.global_load;
 182 }
 183
 184 static enum iwl_mvm_traffic_load
 185 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
 186 {
 187         return mvm->tcm.result.band_load[band];
 188 }
 189
 190 struct iwl_mvm_scan_iter_data {
 191         u32 global_cnt;
 192         struct ieee80211_vif *current_vif;
 193         bool is_dcm_with_p2p_go;
 194 };
 195
 196 static void iwl_mvm_scan_iterator(void *_data, u8 *mac,
 197                                   struct ieee80211_vif *vif)
 198 {
 199         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 200         struct iwl_mvm_scan_iter_data *data = _data;
 201         struct iwl_mvm_vif *curr_mvmvif;
 202
 203         if (vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 204             mvmvif->deflink.phy_ctxt &&
 205             mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX)
 206                 data->global_cnt += 1;
 207
 208         if (!data->current_vif || vif == data->current_vif)
 209                 return;
 210
 211         curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif);
 212
 213         if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO &&
 214             mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt &&
 215             mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id)
 216                 data->is_dcm_with_p2p_go = true;
 217 }
 218
 219 static enum
 220 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 221                                          struct ieee80211_vif *vif,
 222                                          enum iwl_mvm_traffic_load load,
 223                                          bool low_latency)
 224 {
 225         struct iwl_mvm_scan_iter_data data = {
 226                 .current_vif = vif,
 227                 .is_dcm_with_p2p_go = false,
 228                 .global_cnt = 0,
 229         };
 230
 231         /*
 232          * A scanning AP interface probably wants to generate a survey to do
 233          * ACS (automatic channel selection).
 234          * Force a non-fragmented scan in that case.
 235          */
 236         if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP)
 237                 return IWL_SCAN_TYPE_WILD;
 238
 239         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 240                                                    IEEE80211_IFACE_ITER_NORMAL,
 241                                                    iwl_mvm_scan_iterator,
 242                                                    &data);
 243
 244         if (!data.global_cnt)
 245                 return IWL_SCAN_TYPE_UNASSOC;
 246
 247         if (fw_has_api(&mvm->fw->ucode_capa,
 248                        IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
 249                 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
 250                     (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
 251                         return IWL_SCAN_TYPE_FRAGMENTED;
 252
 253                 /*
 254                  * in case of DCM with P2P GO set all scan requests as
 255                  * fast-balance scan
 256                  */
 257                 if (vif && vif->type == NL80211_IFTYPE_STATION &&
 258                     data.is_dcm_with_p2p_go)
 259                         return IWL_SCAN_TYPE_FAST_BALANCE;
 260         }
 261
 262         if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
 263                 return IWL_SCAN_TYPE_MILD;
 264
 265         return IWL_SCAN_TYPE_WILD;
 266 }
 267
 268 static enum
 269 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 270                                         struct ieee80211_vif *vif)
 271 {
 272         enum iwl_mvm_traffic_load load;
 273         bool low_latency;
 274
 275         load = iwl_mvm_get_traffic_load(mvm);
 276         low_latency = iwl_mvm_low_latency(mvm);
 277
 278         return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 279 }
 280
 281 static enum
 282 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
 283                                              struct ieee80211_vif *vif,
 284                                              enum nl80211_band band)
 285 {
 286         enum iwl_mvm_traffic_load load;
 287         bool low_latency;
 288
 289         load = iwl_mvm_get_traffic_load_band(mvm, band);
 290         low_latency = iwl_mvm_low_latency_band(mvm, band);
 291
 292         return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 293 }
 294
 295 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
 296 {
 297         /* require rrm scan whenever the fw supports it */
 298         return fw_has_capa(&mvm->fw->ucode_capa,
 299                            IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
 300 }
 301
 302 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
 303 {
 304         int max_probe_len;
 305
 306         max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
 307
 308         /* we create the 802.11 header SSID element and WFA TPC element */
 309         max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN;
 310
 311         /* DS parameter set element is added on 2.4GHZ band if required */
 312         if (iwl_mvm_rrm_scan_needed(mvm))
 313                 max_probe_len -= 3;
 314
 315         return max_probe_len;
 316 }
 317
 318 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 319 {
 320         int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
 321
 322         /* TODO: [BUG] This function should return the maximum allowed size of
 323          * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
 324          * in the same command. So the correct implementation of this function
 325          * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
 326          * command has only 512 bytes and it would leave us with about 240
 327          * bytes for scan IEs, which is clearly not enough. So meanwhile
 328          * we will report an incorrect value. This may result in a failure to
 329          * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
 330          * functions with -ENOBUFS, if a large enough probe will be provided.
 331          */
 332         return max_ie_len;
 333 }
 334
 335 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
 336                                               struct iwl_rx_cmd_buffer *rxb)
 337 {
 338         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 339         struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
 340
 341         IWL_DEBUG_SCAN(mvm,
 342                        "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
 343                        notif->status, notif->scanned_channels);
 344
 345         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
 346                 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
 347                 ieee80211_sched_scan_results(mvm->hw);
 348                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 349         }
 350 }
 351
 352 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
 353                                  struct iwl_rx_cmd_buffer *rxb)
 354 {
 355         IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
 356         ieee80211_sched_scan_results(mvm->hw);
 357 }
 358
 359 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
 360 {
 361         switch (status) {
 362         case IWL_SCAN_EBS_SUCCESS:
 363                 return "successful";
 364         case IWL_SCAN_EBS_INACTIVE:
 365                 return "inactive";
 366         case IWL_SCAN_EBS_FAILED:
 367         case IWL_SCAN_EBS_CHAN_NOT_FOUND:
 368         default:
 369                 return "failed";
 370         }
 371 }
 372
 373 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
 374                                          struct iwl_rx_cmd_buffer *rxb)
 375 {
 376         struct iwl_rx_packet *pkt = rxb_addr(rxb);
 377         struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
 378         bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
 379
 380         /* If this happens, the firmware has mistakenly sent an LMAC
 381          * notification during UMAC scans -- warn and ignore it.
 382          */
 383         if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
 384                                      IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
 385                 return;
 386
 387         /* scan status must be locked for proper checking */
 388         lockdep_assert_held(&mvm->mutex);
 389
 390         /* We first check if we were stopping a scan, in which case we
 391          * just clear the stopping flag.  Then we check if it was a
 392          * firmware initiated stop, in which case we need to inform
 393          * mac80211.
 394          * Note that we can have a stopping and a running scan
 395          * simultaneously, but we can't have two different types of
 396          * scans stopping or running at the same time (since LMAC
 397          * doesn't support it).
 398          */
 399
 400         if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
 401                 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
 402
 403                 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 404                                aborted ? "aborted" : "completed",
 405                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 406                 IWL_DEBUG_SCAN(mvm,
 407                                "Last line %d, Last iteration %d, Time after last iteration %d\n",
 408                                scan_notif->last_schedule_line,
 409                                scan_notif->last_schedule_iteration,
 410                                __le32_to_cpu(scan_notif->time_after_last_iter));
 411
 412                 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
 413         } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
 414                 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
 415                                aborted ? "aborted" : "completed",
 416                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 417
 418                 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
 419         } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
 420                 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
 421
 422                 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 423                                aborted ? "aborted" : "completed",
 424                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 425                 IWL_DEBUG_SCAN(mvm,
 426                                "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
 427                                scan_notif->last_schedule_line,
 428                                scan_notif->last_schedule_iteration,
 429                                __le32_to_cpu(scan_notif->time_after_last_iter));
 430
 431                 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
 432                 ieee80211_sched_scan_stopped(mvm->hw);
 433                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 434         } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
 435                 struct cfg80211_scan_info info = {
 436                         .aborted = aborted,
 437                 };
 438
 439                 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
 440                                aborted ? "aborted" : "completed",
 441                                iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 442
 443                 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
 444                 ieee80211_scan_completed(mvm->hw, &info);
 445                 cancel_delayed_work(&mvm->scan_timeout_dwork);
 446                 iwl_mvm_resume_tcm(mvm);
 447         } else {
 448                 IWL_ERR(mvm,
 449                         "got scan complete notification but no scan is running\n");
 450         }
 451
 452         mvm->last_ebs_successful =
 453                         scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
 454                         scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
 455 }
 456
 457 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
 458 {
 459         int i;
 460
 461         for (i = 0; i < PROBE_OPTION_MAX; i++) {
 462                 if (!ssid_list[i].len)
 463                         break;
 464                 if (ssid_list[i].len == ssid_len &&
 465                     !memcmp(ssid_list->ssid, ssid, ssid_len))
 466                         return i;
 467         }
 468         return -1;
 469 }
 470
 471 /* We insert the SSIDs in an inverted order, because the FW will
 472  * invert it back.
 473  */
 474 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
 475                                  struct iwl_ssid_ie *ssids,
 476                                  u32 *ssid_bitmap)
 477 {
 478         int i, j;
 479         int index;
 480         u32 tmp_bitmap = 0;
 481
 482         /*
 483          * copy SSIDs from match list.
 484          * iwl_config_sched_scan_profiles() uses the order of these ssids to
 485          * config match list.
 486          */
 487         for (i = 0, j = params->n_match_sets - 1;
 488              j >= 0 && i < PROBE_OPTION_MAX;
 489              i++, j--) {
 490                 /* skip empty SSID matchsets */
 491                 if (!params->match_sets[j].ssid.ssid_len)
 492                         continue;
 493                 ssids[i].id = WLAN_EID_SSID;
 494                 ssids[i].len = params->match_sets[j].ssid.ssid_len;
 495                 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
 496                        ssids[i].len);
 497         }
 498
 499         /* add SSIDs from scan SSID list */
 500         for (j = params->n_ssids - 1;
 501              j >= 0 && i < PROBE_OPTION_MAX;
 502              i++, j--) {
 503                 index = iwl_ssid_exist(params->ssids[j].ssid,
 504                                        params->ssids[j].ssid_len,
 505                                        ssids);
 506                 if (index < 0) {
 507                         ssids[i].id = WLAN_EID_SSID;
 508                         ssids[i].len = params->ssids[j].ssid_len;
 509                         memcpy(ssids[i].ssid, params->ssids[j].ssid,
 510                                ssids[i].len);
 511                         tmp_bitmap |= BIT(i);
 512                 } else {
 513                         tmp_bitmap |= BIT(index);
 514                 }
 515         }
 516         if (ssid_bitmap)
 517                 *ssid_bitmap = tmp_bitmap;
 518 }
 519
 520 static int
 521 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
 522                                    struct cfg80211_sched_scan_request *req)
 523 {
 524         struct iwl_scan_offload_profile *profile;
 525         struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
 526         struct iwl_scan_offload_blocklist *blocklist;
 527         struct iwl_scan_offload_profile_cfg_data *data;
 528         int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
 529         int profile_cfg_size = sizeof(*data) +
 530                 sizeof(*profile) * max_profiles;
 531         struct iwl_host_cmd cmd = {
 532                 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
 533                 .len[1] = profile_cfg_size,
 534                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 535                 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
 536         };
 537         int blocklist_len;
 538         int i;
 539         int ret;
 540
 541         if (WARN_ON(req->n_match_sets > max_profiles))
 542                 return -EIO;
 543
 544         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
 545                 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
 546         else
 547                 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
 548
 549         blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
 550         if (!blocklist)
 551                 return -ENOMEM;
 552
 553         profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
 554         if (!profile_cfg_v1) {
 555                 ret = -ENOMEM;
 556                 goto free_blocklist;
 557         }
 558
 559         cmd.data[0] = blocklist;
 560         cmd.len[0] = sizeof(*blocklist) * blocklist_len;
 561         cmd.data[1] = profile_cfg_v1;
 562
 563         /* if max_profile is MAX_PROFILES_V2, we have the new API */
 564         if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
 565                 struct iwl_scan_offload_profile_cfg *profile_cfg =
 566                         (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
 567
 568                 data = &profile_cfg->data;
 569         } else {
 570                 data = &profile_cfg_v1->data;
 571         }
 572
 573         /* No blocklist configuration */
 574         data->num_profiles = req->n_match_sets;
 575         data->active_clients = SCAN_CLIENT_SCHED_SCAN;
 576         data->pass_match = SCAN_CLIENT_SCHED_SCAN;
 577         data->match_notify = SCAN_CLIENT_SCHED_SCAN;
 578
 579         if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
 580                 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
 581
 582         for (i = 0; i < req->n_match_sets; i++) {
 583                 profile = &profile_cfg_v1->profiles[i];
 584                 profile->ssid_index = i;
 585                 /* Support any cipher and auth algorithm */
 586                 profile->unicast_cipher = 0xff;
 587                 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED |
 588                         IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X |
 589                         IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE;
 590                 profile->network_type = IWL_NETWORK_TYPE_ANY;
 591                 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
 592                 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
 593         }
 594
 595         IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
 596
 597         ret = iwl_mvm_send_cmd(mvm, &cmd);
 598         kfree(profile_cfg_v1);
 599 free_blocklist:
 600         kfree(blocklist);
 601
 602         return ret;
 603 }
 604
 605 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
 606                                   struct cfg80211_sched_scan_request *req)
 607 {
 608         if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
 609                 IWL_DEBUG_SCAN(mvm,
 610                                "Sending scheduled scan with filtering, n_match_sets %d\n",
 611                                req->n_match_sets);
 612                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 613                 return false;
 614         }
 615
 616         IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
 617
 618         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 619         return true;
 620 }
 621
 622 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
 623 {
 624         int ret;
 625         struct iwl_host_cmd cmd = {
 626                 .id = SCAN_OFFLOAD_ABORT_CMD,
 627         };
 628         u32 status = CAN_ABORT_STATUS;
 629
 630         ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
 631         if (ret)
 632                 return ret;
 633
 634         if (status != CAN_ABORT_STATUS) {
 635                 /*
 636                  * The scan abort will return 1 for success or
 637                  * 2 for "failure".  A failure condition can be
 638                  * due to simply not being in an active scan which
 639                  * can occur if we send the scan abort before the
 640                  * microcode has notified us that a scan is completed.
 641                  */
 642                 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
 643                 ret = -ENOENT;
 644         }
 645
 646         return ret;
 647 }
 648
 649 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
 650                                      struct iwl_scan_req_tx_cmd *tx_cmd,
 651                                      bool no_cck)
 652 {
 653         tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 654                                          TX_CMD_FLG_BT_DIS);
 655         tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 656                                                            NL80211_BAND_2GHZ,
 657                                                            no_cck);
 658
 659         if (!iwl_mvm_has_new_station_api(mvm->fw)) {
 660                 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
 661                 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
 662
 663         /*
 664          * Fw doesn't use this sta anymore, pending deprecation via HOST API
 665          * change
 666          */
 667         } else {
 668                 tx_cmd[0].sta_id = 0xff;
 669                 tx_cmd[1].sta_id = 0xff;
 670         }
 671
 672         tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 673                                          TX_CMD_FLG_BT_DIS);
 674
 675         tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 676                                                            NL80211_BAND_5GHZ,
 677                                                            no_cck);
 678 }
 679
 680 static void
 681 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
 682                                struct ieee80211_channel **channels,
 683                                int n_channels, u32 ssid_bitmap,
 684                                struct iwl_scan_req_lmac *cmd)
 685 {
 686         struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
 687         int i;
 688
 689         for (i = 0; i < n_channels; i++) {
 690                 channel_cfg[i].channel_num =
 691                         cpu_to_le16(channels[i]->hw_value);
 692                 channel_cfg[i].iter_count = cpu_to_le16(1);
 693                 channel_cfg[i].iter_interval = 0;
 694                 channel_cfg[i].flags =
 695                         cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
 696                                     ssid_bitmap);
 697         }
 698 }
 699
 700 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
 701                                            size_t len, u8 *const pos)
 702 {
 703         static const u8 before_ds_params[] = {
 704                         WLAN_EID_SSID,
 705                         WLAN_EID_SUPP_RATES,
 706                         WLAN_EID_REQUEST,
 707                         WLAN_EID_EXT_SUPP_RATES,
 708         };
 709         size_t offs;
 710         u8 *newpos = pos;
 711
 712         if (!iwl_mvm_rrm_scan_needed(mvm)) {
 713                 memcpy(newpos, ies, len);
 714                 return newpos + len;
 715         }
 716
 717         offs = ieee80211_ie_split(ies, len,
 718                                   before_ds_params,
 719                                   ARRAY_SIZE(before_ds_params),
 720                                   0);
 721
 722         memcpy(newpos, ies, offs);
 723         newpos += offs;
 724
 725         /* Add a placeholder for DS Parameter Set element */
 726         *newpos++ = WLAN_EID_DS_PARAMS;
 727         *newpos++ = 1;
 728         *newpos++ = 0;
 729
 730         memcpy(newpos, ies + offs, len - offs);
 731         newpos += len - offs;
 732
 733         return newpos;
 734 }
 735
 736 static void iwl_mvm_add_tpc_report_ie(u8 *pos)
 737 {
 738         pos[0] = WLAN_EID_VENDOR_SPECIFIC;
 739         pos[1] = WFA_TPC_IE_LEN - 2;
 740         pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
 741         pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
 742         pos[4] = WLAN_OUI_MICROSOFT & 0xff;
 743         pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
 744         pos[6] = 0;
 745         /* pos[7] - tx power will be inserted by the FW */
 746         pos[7] = 0;
 747         pos[8] = 0;
 748 }
 749
 750 static void
 751 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 752                          struct ieee80211_scan_ies *ies,
 753                          struct iwl_mvm_scan_params *params)
 754 {
 755         struct ieee80211_mgmt *frame = (void *)params->preq.buf;
 756         u8 *pos, *newpos;
 757         const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
 758                 params->mac_addr : NULL;
 759
 760         /*
 761          * Unfortunately, right now the offload scan doesn't support randomising
 762          * within the firmware, so until the firmware API is ready we implement
 763          * it in the driver. This means that the scan iterations won't really be
 764          * random, only when it's restarted, but at least that helps a bit.
 765          */
 766         if (mac_addr)
 767                 get_random_mask_addr(frame->sa, mac_addr,
 768                                      params->mac_addr_mask);
 769         else
 770                 memcpy(frame->sa, vif->addr, ETH_ALEN);
 771
 772         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 773         eth_broadcast_addr(frame->da);
 774         ether_addr_copy(frame->bssid, params->bssid);
 775         frame->seq_ctrl = 0;
 776
 777         pos = frame->u.probe_req.variable;
 778         *pos++ = WLAN_EID_SSID;
 779         *pos++ = 0;
 780
 781         params->preq.mac_header.offset = 0;
 782         params->preq.mac_header.len = cpu_to_le16(24 + 2);
 783
 784         /* Insert ds parameter set element on 2.4 GHz band */
 785         newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
 786                                                  ies->ies[NL80211_BAND_2GHZ],
 787                                                  ies->len[NL80211_BAND_2GHZ],
 788                                                  pos);
 789         params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
 790         params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
 791         pos = newpos;
 792
 793         memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
 794                ies->len[NL80211_BAND_5GHZ]);
 795         params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
 796         params->preq.band_data[1].len =
 797                 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
 798         pos += ies->len[NL80211_BAND_5GHZ];
 799
 800         memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
 801                ies->len[NL80211_BAND_6GHZ]);
 802         params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
 803         params->preq.band_data[2].len =
 804                 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
 805         pos += ies->len[NL80211_BAND_6GHZ];
 806         memcpy(pos, ies->common_ies, ies->common_ie_len);
 807         params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
 808
 809         if (iwl_mvm_rrm_scan_needed(mvm) &&
 810             !fw_has_capa(&mvm->fw->ucode_capa,
 811                          IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
 812                 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
 813                 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
 814                                                            WFA_TPC_IE_LEN);
 815         } else {
 816                 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
 817         }
 818 }
 819
 820 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
 821                                     struct iwl_scan_req_lmac *cmd,
 822                                     struct iwl_mvm_scan_params *params)
 823 {
 824         cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
 825         cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
 826         cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 827         cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
 828         cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
 829         cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
 830         cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 831 }
 832
 833 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
 834                                      struct ieee80211_scan_ies *ies,
 835                                      int n_channels)
 836 {
 837         return ((n_ssids <= PROBE_OPTION_MAX) &&
 838                 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
 839                 (ies->common_ie_len +
 840                  ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] +
 841                  ies->len[NL80211_BAND_6GHZ] <=
 842                  iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
 843 }
 844
 845 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
 846                                         struct ieee80211_vif *vif)
 847 {
 848         const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
 849         bool low_latency;
 850
 851         if (iwl_mvm_is_cdb_supported(mvm))
 852                 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
 853         else
 854                 low_latency = iwl_mvm_low_latency(mvm);
 855
 856         /* We can only use EBS if:
 857          *      1. the feature is supported;
 858          *      2. the last EBS was successful;
 859          *      3. if only single scan, the single scan EBS API is supported;
 860          *      4. it's not a p2p find operation.
 861          *      5. we are not in low latency mode,
 862          *         or if fragmented ebs is supported by the FW
 863          *      6. the VIF is not an AP interface (scan wants survey results)
 864          */
 865         return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
 866                 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
 867                 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 868                 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) &&
 869                 ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP);
 870 }
 871
 872 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
 873 {
 874         return params->n_scan_plans == 1 &&
 875                 params->scan_plans[0].iterations == 1;
 876 }
 877
 878 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
 879 {
 880         return (type == IWL_SCAN_TYPE_FRAGMENTED ||
 881                 type == IWL_SCAN_TYPE_FAST_BALANCE);
 882 }
 883
 884 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
 885                                    struct iwl_mvm_scan_params *params,
 886                                    struct ieee80211_vif *vif)
 887 {
 888         int flags = 0;
 889
 890         if (params->n_ssids == 0)
 891                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
 892
 893         if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
 894                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
 895
 896         if (iwl_mvm_is_scan_fragmented(params->type))
 897                 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
 898
 899         if (iwl_mvm_rrm_scan_needed(mvm) &&
 900             fw_has_capa(&mvm->fw->ucode_capa,
 901                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 902                 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
 903
 904         if (params->pass_all)
 905                 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
 906         else
 907                 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
 908
 909 #ifdef CONFIG_IWLWIFI_DEBUGFS
 910         if (mvm->scan_iter_notif_enabled)
 911                 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 912 #endif
 913
 914         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
 915                 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 916
 917         if (iwl_mvm_is_regular_scan(params) &&
 918             vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 919             !iwl_mvm_is_scan_fragmented(params->type))
 920                 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
 921
 922         return flags;
 923 }
 924
 925 static void
 926 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
 927                                   struct iwl_scan_probe_req *src_p_req)
 928 {
 929         int i;
 930
 931         p_req->mac_header = src_p_req->mac_header;
 932         for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
 933                 p_req->band_data[i] = src_p_req->band_data[i];
 934         p_req->common_data = src_p_req->common_data;
 935         memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
 936 }
 937
 938 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 939                              struct iwl_mvm_scan_params *params)
 940 {
 941         struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
 942         struct iwl_scan_probe_req_v1 *preq =
 943                 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
 944                          mvm->fw->ucode_capa.n_scan_channels);
 945         u32 ssid_bitmap = 0;
 946         int i;
 947         u8 band;
 948
 949         if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
 950                 return -EINVAL;
 951
 952         iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
 953
 954         cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
 955         cmd->iter_num = cpu_to_le32(1);
 956         cmd->n_channels = (u8)params->n_channels;
 957
 958         cmd->delay = cpu_to_le32(params->delay);
 959
 960         cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
 961                                                               vif));
 962
 963         band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
 964         cmd->flags = cpu_to_le32(band);
 965         cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
 966                                         MAC_FILTER_IN_BEACON);
 967         iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
 968         iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
 969
 970         /* this API uses bits 1-20 instead of 0-19 */
 971         ssid_bitmap <<= 1;
 972
 973         for (i = 0; i < params->n_scan_plans; i++) {
 974                 struct cfg80211_sched_scan_plan *scan_plan =
 975                         &params->scan_plans[i];
 976
 977                 cmd->schedule[i].delay =
 978                         cpu_to_le16(scan_plan->interval);
 979                 cmd->schedule[i].iterations = scan_plan->iterations;
 980                 cmd->schedule[i].full_scan_mul = 1;
 981         }
 982
 983         /*
 984          * If the number of iterations of the last scan plan is set to
 985          * zero, it should run infinitely. However, this is not always the case.
 986          * For example, when regular scan is requested the driver sets one scan
 987          * plan with one iteration.
 988          */
 989         if (!cmd->schedule[i - 1].iterations)
 990                 cmd->schedule[i - 1].iterations = 0xff;
 991
 992         if (iwl_mvm_scan_use_ebs(mvm, vif)) {
 993                 cmd->channel_opt[0].flags =
 994                         cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
 995                                     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 996                                     IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
 997                 cmd->channel_opt[0].non_ebs_ratio =
 998                         cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
 999                 cmd->channel_opt[1].flags =
1000                         cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1001                                     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1002                                     IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1003                 cmd->channel_opt[1].non_ebs_ratio =
1004                         cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1005         }
1006
1007         iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1008                                        params->n_channels, ssid_bitmap, cmd);
1009
1010         iwl_mvm_scan_set_legacy_probe_req(preq, &params->preq);
1011
1012         return 0;
1013 }
1014
1015 static int rate_to_scan_rate_flag(unsigned int rate)
1016 {
1017         static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1018                 [IWL_RATE_1M_INDEX]     = SCAN_CONFIG_RATE_1M,
1019                 [IWL_RATE_2M_INDEX]     = SCAN_CONFIG_RATE_2M,
1020                 [IWL_RATE_5M_INDEX]     = SCAN_CONFIG_RATE_5M,
1021                 [IWL_RATE_11M_INDEX]    = SCAN_CONFIG_RATE_11M,
1022                 [IWL_RATE_6M_INDEX]     = SCAN_CONFIG_RATE_6M,
1023                 [IWL_RATE_9M_INDEX]     = SCAN_CONFIG_RATE_9M,
1024                 [IWL_RATE_12M_INDEX]    = SCAN_CONFIG_RATE_12M,
1025                 [IWL_RATE_18M_INDEX]    = SCAN_CONFIG_RATE_18M,
1026                 [IWL_RATE_24M_INDEX]    = SCAN_CONFIG_RATE_24M,
1027                 [IWL_RATE_36M_INDEX]    = SCAN_CONFIG_RATE_36M,
1028                 [IWL_RATE_48M_INDEX]    = SCAN_CONFIG_RATE_48M,
1029                 [IWL_RATE_54M_INDEX]    = SCAN_CONFIG_RATE_54M,
1030         };
1031
1032         return rate_to_scan_rate[rate];
1033 }
1034
1035 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1036 {
1037         struct ieee80211_supported_band *band;
1038         unsigned int rates = 0;
1039         int i;
1040
1041         band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1042         for (i = 0; i < band->n_bitrates; i++)
1043                 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1044         band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1045         for (i = 0; i < band->n_bitrates; i++)
1046                 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1047
1048         /* Set both basic rates and supported rates */
1049         rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1050
1051         return cpu_to_le32(rates);
1052 }
1053
1054 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1055                                     struct iwl_scan_dwell *dwell)
1056 {
1057         dwell->active = IWL_SCAN_DWELL_ACTIVE;
1058         dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1059         dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1060         dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1061 }
1062
1063 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1064                                   u32 max_channels)
1065 {
1066         struct ieee80211_supported_band *band;
1067         int i, j = 0;
1068
1069         band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1070         for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1071                 channels[j] = band->channels[i].hw_value;
1072         band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1073         for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1074                 channels[j] = band->channels[i].hw_value;
1075 }
1076
1077 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1078                                         u32 flags, u8 channel_flags,
1079                                         u32 max_channels)
1080 {
1081         enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1082         struct iwl_scan_config_v1 *cfg = config;
1083
1084         cfg->flags = cpu_to_le32(flags);
1085         cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1086         cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1087         cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1088         cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1089         cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1090
1091         iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1092
1093         memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1094
1095         /* This function should not be called when using ADD_STA ver >=12 */
1096         WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1097
1098         cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1099         cfg->channel_flags = channel_flags;
1100
1101         iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1102 }
1103
1104 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1105                                         u32 flags, u8 channel_flags,
1106                                         u32 max_channels)
1107 {
1108         struct iwl_scan_config_v2 *cfg = config;
1109
1110         cfg->flags = cpu_to_le32(flags);
1111         cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1112         cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1113         cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1114
1115         if (iwl_mvm_is_cdb_supported(mvm)) {
1116                 enum iwl_mvm_scan_type lb_type, hb_type;
1117
1118                 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1119                                                      NL80211_BAND_2GHZ);
1120                 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1121                                                      NL80211_BAND_5GHZ);
1122
1123                 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1124                         cpu_to_le32(scan_timing[lb_type].max_out_time);
1125                 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1126                         cpu_to_le32(scan_timing[lb_type].suspend_time);
1127
1128                 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1129                         cpu_to_le32(scan_timing[hb_type].max_out_time);
1130                 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1131                         cpu_to_le32(scan_timing[hb_type].suspend_time);
1132         } else {
1133                 enum iwl_mvm_scan_type type =
1134                         iwl_mvm_get_scan_type(mvm, NULL);
1135
1136                 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1137                         cpu_to_le32(scan_timing[type].max_out_time);
1138                 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1139                         cpu_to_le32(scan_timing[type].suspend_time);
1140         }
1141
1142         iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1143
1144         memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1145
1146         /* This function should not be called when using ADD_STA ver >=12 */
1147         WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1148
1149         cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1150         cfg->channel_flags = channel_flags;
1151
1152         iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1153 }
1154
1155 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1156 {
1157         void *cfg;
1158         int ret, cmd_size;
1159         struct iwl_host_cmd cmd = {
1160                 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1161         };
1162         enum iwl_mvm_scan_type type;
1163         enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1164         int num_channels =
1165                 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1166                 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1167         u32 flags;
1168         u8 channel_flags;
1169
1170         if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1171                 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1172
1173         if (iwl_mvm_is_cdb_supported(mvm)) {
1174                 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1175                                                   NL80211_BAND_2GHZ);
1176                 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1177                                                      NL80211_BAND_5GHZ);
1178                 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1179                         return 0;
1180         } else {
1181                 type = iwl_mvm_get_scan_type(mvm, NULL);
1182                 if (type == mvm->scan_type)
1183                         return 0;
1184         }
1185
1186         if (iwl_mvm_cdb_scan_api(mvm))
1187                 cmd_size = sizeof(struct iwl_scan_config_v2);
1188         else
1189                 cmd_size = sizeof(struct iwl_scan_config_v1);
1190         cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1191
1192         cfg = kzalloc(cmd_size, GFP_KERNEL);
1193         if (!cfg)
1194                 return -ENOMEM;
1195
1196         flags = SCAN_CONFIG_FLAG_ACTIVATE |
1197                  SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1198                  SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1199                  SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1200                  SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1201                  SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1202                  SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1203                  SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1204                  SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1205                  SCAN_CONFIG_N_CHANNELS(num_channels) |
1206                  (iwl_mvm_is_scan_fragmented(type) ?
1207                   SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1208                   SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1209
1210         channel_flags = IWL_CHANNEL_FLAG_EBS |
1211                         IWL_CHANNEL_FLAG_ACCURATE_EBS |
1212                         IWL_CHANNEL_FLAG_EBS_ADD |
1213                         IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1214
1215         /*
1216          * Check for fragmented scan on LMAC2 - high band.
1217          * LMAC1 - low band is checked above.
1218          */
1219         if (iwl_mvm_cdb_scan_api(mvm)) {
1220                 if (iwl_mvm_is_cdb_supported(mvm))
1221                         flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1222                                  SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1223                                  SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1224                 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1225                                             num_channels);
1226         } else {
1227                 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1228                                             num_channels);
1229         }
1230
1231         cmd.data[0] = cfg;
1232         cmd.len[0] = cmd_size;
1233         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1234
1235         IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1236
1237         ret = iwl_mvm_send_cmd(mvm, &cmd);
1238         if (!ret) {
1239                 mvm->scan_type = type;
1240                 mvm->hb_scan_type = hb_type;
1241         }
1242
1243         kfree(cfg);
1244         return ret;
1245 }
1246
1247 int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1248 {
1249         struct iwl_scan_config cfg;
1250         struct iwl_host_cmd cmd = {
1251                 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1252                 .len[0] = sizeof(cfg),
1253                 .data[0] = &cfg,
1254                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1255         };
1256
1257         if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1258                 return iwl_mvm_legacy_config_scan(mvm);
1259
1260         memset(&cfg, 0, sizeof(cfg));
1261
1262         if (!iwl_mvm_has_new_station_api(mvm->fw)) {
1263                 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1264         } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) {
1265                 /*
1266                  * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1267                  * version 5.
1268                  */
1269                 cfg.bcast_sta_id = 0xff;
1270         }
1271
1272         cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1273         cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1274
1275         IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1276
1277         return iwl_mvm_send_cmd(mvm, &cmd);
1278 }
1279
1280 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1281 {
1282         int i;
1283
1284         for (i = 0; i < mvm->max_scans; i++)
1285                 if (mvm->scan_uid_status[i] == status)
1286                         return i;
1287
1288         return -ENOENT;
1289 }
1290
1291 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1292                                     struct iwl_scan_req_umac *cmd,
1293                                     struct iwl_mvm_scan_params *params)
1294 {
1295         struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1296         u8 active_dwell, passive_dwell;
1297
1298         timing = &scan_timing[params->type];
1299         active_dwell = IWL_SCAN_DWELL_ACTIVE;
1300         passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1301
1302         if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1303                 cmd->v7.adwell_default_n_aps_social =
1304                         IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1305                 cmd->v7.adwell_default_n_aps =
1306                         IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1307
1308                 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1309                         cmd->v9.adwell_default_hb_n_aps =
1310                                 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1311
1312                 /* if custom max budget was configured with debugfs */
1313                 if (IWL_MVM_ADWELL_MAX_BUDGET)
1314                         cmd->v7.adwell_max_budget =
1315                                 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1316                 else if (params->n_ssids && params->ssids[0].ssid_len)
1317                         cmd->v7.adwell_max_budget =
1318                                 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1319                 else
1320                         cmd->v7.adwell_max_budget =
1321                                 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1322
1323                 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1324                 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1325                         cpu_to_le32(timing->max_out_time);
1326                 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1327                         cpu_to_le32(timing->suspend_time);
1328
1329                 if (iwl_mvm_is_cdb_supported(mvm)) {
1330                         hb_timing = &scan_timing[params->hb_type];
1331
1332                         cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1333                                 cpu_to_le32(hb_timing->max_out_time);
1334                         cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1335                                 cpu_to_le32(hb_timing->suspend_time);
1336                 }
1337
1338                 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1339                         cmd->v7.active_dwell = active_dwell;
1340                         cmd->v7.passive_dwell = passive_dwell;
1341                         cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1342                 } else {
1343                         cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1344                         cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1345                         if (iwl_mvm_is_cdb_supported(mvm)) {
1346                                 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1347                                         active_dwell;
1348                                 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1349                                         passive_dwell;
1350                         }
1351                 }
1352         } else {
1353                 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1354                 cmd->v1.active_dwell = active_dwell;
1355                 cmd->v1.passive_dwell = passive_dwell;
1356                 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1357
1358                 if (iwl_mvm_is_cdb_supported(mvm)) {
1359                         hb_timing = &scan_timing[params->hb_type];
1360
1361                         cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1362                                         cpu_to_le32(hb_timing->max_out_time);
1363                         cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1364                                         cpu_to_le32(hb_timing->suspend_time);
1365                 }
1366
1367                 if (iwl_mvm_cdb_scan_api(mvm)) {
1368                         cmd->v6.scan_priority =
1369                                 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1370                         cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1371                                 cpu_to_le32(timing->max_out_time);
1372                         cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1373                                 cpu_to_le32(timing->suspend_time);
1374                 } else {
1375                         cmd->v1.scan_priority =
1376                                 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1377                         cmd->v1.max_out_time =
1378                                 cpu_to_le32(timing->max_out_time);
1379                         cmd->v1.suspend_time =
1380                                 cpu_to_le32(timing->suspend_time);
1381                 }
1382         }
1383
1384         if (iwl_mvm_is_regular_scan(params))
1385                 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1386         else
1387                 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1388 }
1389
1390 static u32 iwl_mvm_scan_umac_ooc_priority(int type)
1391 {
1392         if (type == IWL_MVM_SCAN_REGULAR)
1393                 return IWL_SCAN_PRIORITY_EXT_6;
1394         if (type == IWL_MVM_SCAN_INT_MLO)
1395                 return IWL_SCAN_PRIORITY_EXT_4;
1396
1397         return IWL_SCAN_PRIORITY_EXT_2;
1398 }
1399
1400 static void
1401 iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm,
1402                             struct iwl_scan_general_params_v11 *general_params,
1403                             struct iwl_mvm_scan_params *params)
1404 {
1405         struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1406         u8 active_dwell, passive_dwell;
1407
1408         timing = &scan_timing[params->type];
1409         active_dwell = IWL_SCAN_DWELL_ACTIVE;
1410         passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1411
1412         general_params->adwell_default_social_chn =
1413                 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1414         general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1415         general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1416
1417         /* if custom max budget was configured with debugfs */
1418         if (IWL_MVM_ADWELL_MAX_BUDGET)
1419                 general_params->adwell_max_budget =
1420                         cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1421         else if (params->n_ssids && params->ssids[0].ssid_len)
1422                 general_params->adwell_max_budget =
1423                         cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1424         else
1425                 general_params->adwell_max_budget =
1426                         cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1427
1428         general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1429         general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1430                 cpu_to_le32(timing->max_out_time);
1431         general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1432                 cpu_to_le32(timing->suspend_time);
1433
1434         hb_timing = &scan_timing[params->hb_type];
1435
1436         general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1437                 cpu_to_le32(hb_timing->max_out_time);
1438         general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1439                 cpu_to_le32(hb_timing->suspend_time);
1440
1441         general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1442         general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1443         general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1444         general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1445 }
1446
1447 struct iwl_mvm_scan_channel_segment {
1448         u8 start_idx;
1449         u8 end_idx;
1450         u8 first_channel_id;
1451         u8 last_channel_id;
1452         u8 channel_spacing_shift;
1453         u8 band;
1454 };
1455
1456 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1457         {
1458                 .start_idx = 0,
1459                 .end_idx = 13,
1460                 .first_channel_id = 1,
1461                 .last_channel_id = 14,
1462                 .channel_spacing_shift = 0,
1463                 .band = PHY_BAND_24
1464         },
1465         {
1466                 .start_idx = 14,
1467                 .end_idx = 41,
1468                 .first_channel_id = 36,
1469                 .last_channel_id = 144,
1470                 .channel_spacing_shift = 2,
1471                 .band = PHY_BAND_5
1472         },
1473         {
1474                 .start_idx = 42,
1475                 .end_idx = 50,
1476                 .first_channel_id = 149,
1477                 .last_channel_id = 181,
1478                 .channel_spacing_shift = 2,
1479                 .band = PHY_BAND_5
1480         },
1481         {
1482                 .start_idx = 51,
1483                 .end_idx = 111,
1484                 .first_channel_id = 1,
1485                 .last_channel_id = 241,
1486                 .channel_spacing_shift = 2,
1487                 .band = PHY_BAND_6
1488         },
1489 };
1490
1491 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1492 {
1493         int i, index;
1494
1495         if (!channel_id)
1496                 return -EINVAL;
1497
1498         for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1499                 const struct iwl_mvm_scan_channel_segment *ch_segment =
1500                         &scan_channel_segments[i];
1501                 u32 ch_offset;
1502
1503                 if (ch_segment->band != band ||
1504                     ch_segment->first_channel_id > channel_id ||
1505                     ch_segment->last_channel_id < channel_id)
1506                         continue;
1507
1508                 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1509                         ch_segment->channel_spacing_shift;
1510
1511                 index = scan_channel_segments[i].start_idx + ch_offset;
1512                 if (index < IWL_SCAN_NUM_CHANNELS)
1513                         return index;
1514
1515                 break;
1516         }
1517
1518         return -EINVAL;
1519 }
1520
1521 static const u8 p2p_go_friendly_chs[] = {
1522         36, 40, 44, 48, 149, 153, 157, 161, 165,
1523 };
1524
1525 static const u8 social_chs[] = {
1526         1, 6, 11
1527 };
1528
1529 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1530                                                u8 ch_id, u8 band, u8 *ch_bitmap,
1531                                                size_t bitmap_n_entries)
1532 {
1533         int i;
1534
1535         if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1536                 return;
1537
1538         for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1539                 if (p2p_go_friendly_chs[i] == ch_id) {
1540                         int ch_idx, bitmap_idx;
1541
1542                         ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1543                         if (ch_idx < 0)
1544                                 return;
1545
1546                         bitmap_idx = ch_idx / 8;
1547                         if (bitmap_idx >= bitmap_n_entries)
1548                                 return;
1549
1550                         ch_idx = ch_idx % 8;
1551                         ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1552
1553                         return;
1554                 }
1555         }
1556 }
1557
1558 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1559 {
1560         int i;
1561         u32 flags = 0;
1562
1563         if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1564                 goto out;
1565
1566         for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1567                 if (p2p_go_friendly_chs[i] == ch_id) {
1568                         flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1569                         break;
1570                 }
1571         }
1572
1573         if (flags)
1574                 goto out;
1575
1576         for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1577                 if (social_chs[i] == ch_id) {
1578                         flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1579                         break;
1580                 }
1581         }
1582
1583 out:
1584         return flags;
1585 }
1586
1587 static void
1588 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1589                                struct ieee80211_channel **channels,
1590                                int n_channels, u32 flags,
1591                                struct iwl_scan_channel_cfg_umac *channel_cfg)
1592 {
1593         int i;
1594
1595         for (i = 0; i < n_channels; i++) {
1596                 channel_cfg[i].flags = cpu_to_le32(flags);
1597                 channel_cfg[i].channel_num = channels[i]->hw_value;
1598                 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1599                         enum nl80211_band band = channels[i]->band;
1600
1601                         channel_cfg[i].v2.band =
1602                                 iwl_mvm_phy_band_from_nl80211(band);
1603                         channel_cfg[i].v2.iter_count = 1;
1604                         channel_cfg[i].v2.iter_interval = 0;
1605                 } else {
1606                         channel_cfg[i].v1.iter_count = 1;
1607                         channel_cfg[i].v1.iter_interval = 0;
1608                 }
1609         }
1610 }
1611
1612 static void
1613 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1614                                   struct ieee80211_channel **channels,
1615                                   struct iwl_scan_channel_params_v4 *cp,
1616                                   int n_channels, u32 flags,
1617                                   enum nl80211_iftype vif_type)
1618 {
1619         u8 *bitmap = cp->adwell_ch_override_bitmap;
1620         size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1621         int i;
1622
1623         for (i = 0; i < n_channels; i++) {
1624                 enum nl80211_band band = channels[i]->band;
1625                 struct iwl_scan_channel_cfg_umac *cfg =
1626                         &cp->channel_config[i];
1627
1628                 cfg->flags = cpu_to_le32(flags);
1629                 cfg->channel_num = channels[i]->hw_value;
1630                 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1631                 cfg->v2.iter_count = 1;
1632                 cfg->v2.iter_interval = 0;
1633
1634                 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1635                                                    cfg->channel_num,
1636                                                    cfg->v2.band, bitmap,
1637                                                    bitmap_n_entries);
1638         }
1639 }
1640
1641 static void
1642 iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm,
1643                                   struct ieee80211_channel **channels,
1644                                   struct iwl_scan_channel_params_v7 *cp,
1645                                   int n_channels, u32 flags,
1646                                   enum nl80211_iftype vif_type, u32 version)
1647 {
1648         int i;
1649
1650         for (i = 0; i < n_channels; i++) {
1651                 enum nl80211_band band = channels[i]->band;
1652                 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1653                 u32 n_aps_flag =
1654                         iwl_mvm_scan_ch_n_aps_flag(vif_type,
1655                                                    channels[i]->hw_value);
1656                 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band);
1657
1658                 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1659                 cfg->channel_num = channels[i]->hw_value;
1660                 if (cfg80211_channel_is_psc(channels[i]))
1661                         cfg->flags = 0;
1662
1663                 if (band == NL80211_BAND_6GHZ) {
1664                         /* 6 GHz channels should only appear in a scan request
1665                          * that has scan_6ghz set. The only exception is MLO
1666                          * scan, which has to be passive.
1667                          */
1668                         WARN_ON_ONCE(cfg->flags != 0);
1669                         cfg->flags =
1670                                 cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE);
1671                 }
1672
1673                 cfg->v2.iter_count = 1;
1674                 cfg->v2.iter_interval = 0;
1675                 if (version < 17)
1676                         cfg->v2.band = iwl_band;
1677                 else
1678                         cfg->flags |= cpu_to_le32((iwl_band <<
1679                                                    IWL_CHAN_CFG_FLAGS_BAND_POS));
1680         }
1681 }
1682
1683 static void
1684 iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm,
1685                                     struct iwl_mvm_scan_params *params,
1686                                      struct iwl_scan_probe_params_v4 *pp)
1687 {
1688         int j, idex_s = 0, idex_b = 0;
1689         struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1690                 params->scan_6ghz_params;
1691         bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa,
1692                                             IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN);
1693
1694         for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE;
1695              j++) {
1696                 if (!params->ssids[j].ssid_len)
1697                         continue;
1698
1699                 pp->short_ssid[idex_s] =
1700                         cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1701                                               params->ssids[j].ssid_len));
1702
1703                 if (hidden_supported) {
1704                         pp->direct_scan[idex_s].id = WLAN_EID_SSID;
1705                         pp->direct_scan[idex_s].len = params->ssids[j].ssid_len;
1706                         memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid,
1707                                params->ssids[j].ssid_len);
1708                 }
1709                 idex_s++;
1710         }
1711
1712         /*
1713          * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1714          * collocated parameters. This might not be optimal, as this processing
1715          * does not (yet) correspond to the actual channels, so it is possible
1716          * that some entries would be left out.
1717          *
1718          * TODO: improve this logic.
1719          */
1720         for (j = 0; j < params->n_6ghz_params; j++) {
1721                 int k;
1722
1723                 /* First, try to place the short SSID */
1724                 if (scan_6ghz_params[j].short_ssid_valid) {
1725                         for (k = 0; k < idex_s; k++) {
1726                                 if (pp->short_ssid[k] ==
1727                                     cpu_to_le32(scan_6ghz_params[j].short_ssid))
1728                                         break;
1729                         }
1730
1731                         if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1732                                 pp->short_ssid[idex_s++] =
1733                                         cpu_to_le32(scan_6ghz_params[j].short_ssid);
1734                         }
1735                 }
1736
1737                 /* try to place BSSID for the same entry */
1738                 for (k = 0; k < idex_b; k++) {
1739                         if (!memcmp(&pp->bssid_array[k],
1740                                     scan_6ghz_params[j].bssid, ETH_ALEN))
1741                                 break;
1742                 }
1743
1744                 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE &&
1745                     !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid),
1746                                "scan: invalid BSSID at index %u, index_b=%u\n",
1747                                j, idex_b)) {
1748                         memcpy(&pp->bssid_array[idex_b++],
1749                                scan_6ghz_params[j].bssid, ETH_ALEN);
1750                 }
1751         }
1752
1753         pp->short_ssid_num = idex_s;
1754         pp->bssid_num = idex_b;
1755 }
1756
1757 /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */
1758 static u32
1759 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm,
1760                                      struct iwl_mvm_scan_params *params,
1761                                      u32 n_channels,
1762                                      struct iwl_scan_probe_params_v4 *pp,
1763                                      struct iwl_scan_channel_params_v7 *cp,
1764                                      enum nl80211_iftype vif_type,
1765                                      u32 version)
1766 {
1767         int i;
1768         struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1769                 params->scan_6ghz_params;
1770         u32 ch_cnt;
1771
1772         for (i = 0, ch_cnt = 0; i < params->n_channels; i++) {
1773                 struct iwl_scan_channel_cfg_umac *cfg =
1774                         &cp->channel_config[ch_cnt];
1775
1776                 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1777                 u8 k, n_s_ssids = 0, n_bssids = 0;
1778                 u8 max_s_ssids, max_bssids;
1779                 bool force_passive = false, found = false, allow_passive = true,
1780                      unsolicited_probe_on_chan = false, psc_no_listen = false;
1781                 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
1782
1783                 /*
1784                  * Avoid performing passive scan on non PSC channels unless the
1785                  * scan is specifically a passive scan, i.e., no SSIDs
1786                  * configured in the scan command.
1787                  */
1788                 if (!cfg80211_channel_is_psc(params->channels[i]) &&
1789                     !params->n_6ghz_params && params->n_ssids)
1790                         continue;
1791
1792                 cfg->channel_num = params->channels[i]->hw_value;
1793                 if (version < 17)
1794                         cfg->v2.band = PHY_BAND_6;
1795                 else
1796                         cfg->flags |= cpu_to_le32(PHY_BAND_6 <<
1797                                                   IWL_CHAN_CFG_FLAGS_BAND_POS);
1798
1799                 cfg->v5.iter_count = 1;
1800                 cfg->v5.iter_interval = 0;
1801
1802                 for (u32 j = 0; j < params->n_6ghz_params; j++) {
1803                         s8 tmp_psd_20;
1804
1805                         if (!(scan_6ghz_params[j].channel_idx == i))
1806                                 continue;
1807
1808                         unsolicited_probe_on_chan |=
1809                                 scan_6ghz_params[j].unsolicited_probe;
1810
1811                         /* Use the highest PSD value allowed as advertised by
1812                          * APs for this channel
1813                          */
1814                         tmp_psd_20 = scan_6ghz_params[j].psd_20;
1815                         if (tmp_psd_20 !=
1816                             IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED &&
1817                             (psd_20 ==
1818                              IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED ||
1819                              psd_20 < tmp_psd_20))
1820                                 psd_20 = tmp_psd_20;
1821
1822                         psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1823                 }
1824
1825                 /*
1826                  * In the following cases apply passive scan:
1827                  * 1. Non fragmented scan:
1828                  *      - PSC channel with NO_LISTEN_FLAG on should be treated
1829                  *        like non PSC channel
1830                  *      - Non PSC channel with more than 3 short SSIDs or more
1831                  *        than 9 BSSIDs.
1832                  *      - Non PSC Channel with unsolicited probe response and
1833                  *        more than 2 short SSIDs or more than 6 BSSIDs.
1834                  *      - PSC channel with more than 2 short SSIDs or more than
1835                  *        6 BSSIDs.
1836                  * 3. Fragmented scan:
1837                  *      - PSC channel with more than 1 SSID or 3 BSSIDs.
1838                  *      - Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1839                  *      - Non PSC channel with unsolicited probe response and
1840                  *        more than 1 SSID or more than 3 BSSIDs.
1841                  */
1842                 if (!iwl_mvm_is_scan_fragmented(params->type)) {
1843                         if (!cfg80211_channel_is_psc(params->channels[i]) ||
1844                             psc_no_listen) {
1845                                 if (unsolicited_probe_on_chan) {
1846                                         max_s_ssids = 2;
1847                                         max_bssids = 6;
1848                                 } else {
1849                                         max_s_ssids = 3;
1850                                         max_bssids = 9;
1851                                 }
1852                         } else {
1853                                 max_s_ssids = 2;
1854                                 max_bssids = 6;
1855                         }
1856                 } else if (cfg80211_channel_is_psc(params->channels[i])) {
1857                         max_s_ssids = 1;
1858                         max_bssids = 3;
1859                 } else {
1860                         if (unsolicited_probe_on_chan) {
1861                                 max_s_ssids = 1;
1862                                 max_bssids = 3;
1863                         } else {
1864                                 max_s_ssids = 2;
1865                                 max_bssids = 6;
1866                         }
1867                 }
1868
1869                 /*
1870                  * The optimize the scan time, i.e., reduce the scan dwell time
1871                  * on each channel, the below logic tries to set 3 direct BSSID
1872                  * probe requests for each broadcast probe request with a short
1873                  * SSID.
1874                  * TODO: improve this logic
1875                  */
1876                 for (u32 j = 0; j < params->n_6ghz_params; j++) {
1877                         if (!(scan_6ghz_params[j].channel_idx == i))
1878                                 continue;
1879
1880                         found = false;
1881
1882                         for (k = 0;
1883                              k < pp->short_ssid_num && n_s_ssids < max_s_ssids;
1884                              k++) {
1885                                 if (!scan_6ghz_params[j].unsolicited_probe &&
1886                                     le32_to_cpu(pp->short_ssid[k]) ==
1887                                     scan_6ghz_params[j].short_ssid) {
1888                                         /* Relevant short SSID bit set */
1889                                         if (s_ssid_bitmap & BIT(k)) {
1890                                                 found = true;
1891                                                 break;
1892                                         }
1893
1894                                         /*
1895                                          * Prefer creating BSSID entries unless
1896                                          * the short SSID probe can be done in
1897                                          * the same channel dwell iteration.
1898                                          *
1899                                          * We also need to create a short SSID
1900                                          * entry for any hidden AP.
1901                                          */
1902                                         if (3 * n_s_ssids > n_bssids &&
1903                                             !pp->direct_scan[k].len)
1904                                                 break;
1905
1906                                         /* Hidden AP, cannot do passive scan */
1907                                         if (pp->direct_scan[k].len)
1908                                                 allow_passive = false;
1909
1910                                         s_ssid_bitmap |= BIT(k);
1911                                         n_s_ssids++;
1912                                         found = true;
1913                                         break;
1914                                 }
1915                         }
1916
1917                         if (found)
1918                                 continue;
1919
1920                         for (k = 0; k < pp->bssid_num; k++) {
1921                                 if (!memcmp(&pp->bssid_array[k],
1922                                             scan_6ghz_params[j].bssid,
1923                                             ETH_ALEN)) {
1924                                         if (!(bssid_bitmap & BIT(k))) {
1925                                                 if (n_bssids < max_bssids) {
1926                                                         bssid_bitmap |= BIT(k);
1927                                                         n_bssids++;
1928                                                 } else {
1929                                                         force_passive = TRUE;
1930                                                 }
1931                                         }
1932                                         break;
1933                                 }
1934                         }
1935                 }
1936
1937                 if (cfg80211_channel_is_psc(params->channels[i]) &&
1938                     psc_no_listen)
1939                         flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1940
1941                 if (unsolicited_probe_on_chan)
1942                         flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1943
1944                 if ((allow_passive && force_passive) ||
1945                     (!(bssid_bitmap | s_ssid_bitmap) &&
1946                      !cfg80211_channel_is_psc(params->channels[i])))
1947                         flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1948                 else
1949                         flags |= bssid_bitmap | (s_ssid_bitmap << 16);
1950
1951                 cfg->flags |= cpu_to_le32(flags);
1952                 if (version >= 17)
1953                         cfg->v5.psd_20 = psd_20;
1954
1955                 ch_cnt++;
1956         }
1957
1958         if (params->n_channels > ch_cnt)
1959                 IWL_DEBUG_SCAN(mvm,
1960                                "6GHz: reducing number channels: (%u->%u)\n",
1961                                params->n_channels, ch_cnt);
1962
1963         return ch_cnt;
1964 }
1965
1966 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1967                                           struct iwl_mvm_scan_params *params,
1968                                           struct ieee80211_vif *vif)
1969 {
1970         u8 flags = 0;
1971
1972         flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1973
1974         if (iwl_mvm_scan_use_ebs(mvm, vif))
1975                 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1976                         IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1977                         IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1978
1979         /* set fragmented ebs for fragmented scan on HB channels */
1980         if ((!iwl_mvm_is_cdb_supported(mvm) &&
1981              iwl_mvm_is_scan_fragmented(params->type)) ||
1982             (iwl_mvm_is_cdb_supported(mvm) &&
1983              iwl_mvm_is_scan_fragmented(params->hb_type)))
1984                 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1985
1986         /*
1987          * force EBS in case the scan is a fragmented and there is a need to take P2P
1988          * GO operation into consideration during scan operation.
1989          */
1990         if ((!iwl_mvm_is_cdb_supported(mvm) &&
1991              iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) ||
1992             (iwl_mvm_is_cdb_supported(mvm) &&
1993              iwl_mvm_is_scan_fragmented(params->hb_type) &&
1994              params->respect_p2p_go_hb)) {
1995                 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n");
1996                 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS;
1997         }
1998
1999         return flags;
2000 }
2001
2002 static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
2003                                            struct iwl_mvm_scan_params *params,
2004                                            struct ieee80211_vif *vif)
2005 {
2006         struct ieee80211_supported_band *sband =
2007                 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2008         u32 n_disabled, i;
2009
2010         params->enable_6ghz_passive = false;
2011
2012         if (params->scan_6ghz)
2013                 return;
2014
2015         if (!fw_has_capa(&mvm->fw->ucode_capa,
2016                          IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
2017                 IWL_DEBUG_SCAN(mvm,
2018                                "6GHz passive scan: Not supported by FW\n");
2019                 return;
2020         }
2021
2022         /* 6GHz passive scan allowed only on station interface  */
2023         if (vif->type != NL80211_IFTYPE_STATION) {
2024                 IWL_DEBUG_SCAN(mvm,
2025                                "6GHz passive scan: not station interface\n");
2026                 return;
2027         }
2028
2029         /*
2030          * 6GHz passive scan is allowed in a defined time interval following HW
2031          * reset or resume flow, or while not associated and a large interval
2032          * has passed since the last 6GHz passive scan.
2033          */
2034         if ((vif->cfg.assoc ||
2035              time_after(mvm->last_6ghz_passive_scan_jiffies +
2036                         (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
2037             (time_before(mvm->last_reset_or_resume_time_jiffies +
2038                          (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
2039                          jiffies))) {
2040                 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
2041                                vif->cfg.assoc ? "associated" :
2042                                "timeout did not expire");
2043                 return;
2044         }
2045
2046         /* not enough channels in the regular scan request */
2047         if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
2048                 IWL_DEBUG_SCAN(mvm,
2049                                "6GHz passive scan: not enough channels\n");
2050                 return;
2051         }
2052
2053         for (i = 0; i < params->n_ssids; i++) {
2054                 if (!params->ssids[i].ssid_len)
2055                         break;
2056         }
2057
2058         /* not a wildcard scan, so cannot enable passive 6GHz scan */
2059         if (i == params->n_ssids) {
2060                 IWL_DEBUG_SCAN(mvm,
2061                                "6GHz passive scan: no wildcard SSID\n");
2062                 return;
2063         }
2064
2065         if (!sband || !sband->n_channels) {
2066                 IWL_DEBUG_SCAN(mvm,
2067                                "6GHz passive scan: no 6GHz channels\n");
2068                 return;
2069         }
2070
2071         for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
2072                 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
2073                         n_disabled++;
2074         }
2075
2076         /*
2077          * Not all the 6GHz channels are disabled, so no need for 6GHz passive
2078          * scan
2079          */
2080         if (n_disabled != sband->n_channels) {
2081                 IWL_DEBUG_SCAN(mvm,
2082                                "6GHz passive scan: 6GHz channels enabled\n");
2083                 return;
2084         }
2085
2086         /* all conditions to enable 6ghz passive scan are satisfied */
2087         IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
2088         params->enable_6ghz_passive = true;
2089 }
2090
2091 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
2092                                       struct iwl_mvm_scan_params *params,
2093                                       struct ieee80211_vif *vif,
2094                                       int type)
2095 {
2096         u16 flags = 0;
2097
2098         /*
2099          * If no direct SSIDs are provided perform a passive scan. Otherwise,
2100          * if there is a single SSID which is not the broadcast SSID, assume
2101          * that the scan is intended for roaming purposes and thus enable Rx on
2102          * all chains to improve chances of hearing the beacons/probe responses.
2103          */
2104         if (params->n_ssids == 0)
2105                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
2106         else if (params->n_ssids == 1 && params->ssids[0].ssid_len)
2107                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;
2108
2109         if (iwl_mvm_is_scan_fragmented(params->type))
2110                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
2111
2112         if (iwl_mvm_is_scan_fragmented(params->hb_type))
2113                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
2114
2115         if (params->pass_all)
2116                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
2117         else
2118                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
2119
2120         if (!iwl_mvm_is_regular_scan(params))
2121                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
2122
2123         if (params->iter_notif ||
2124             mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2125                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
2126
2127         if (IWL_MVM_ADWELL_ENABLE)
2128                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2129
2130         if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2131                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2132
2133         if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2134             params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2135                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2136
2137         if (params->enable_6ghz_passive)
2138                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2139
2140         if (iwl_mvm_is_oce_supported(mvm) &&
2141             (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP |
2142                               NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE |
2143                               NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)))
2144                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE;
2145
2146         return flags;
2147 }
2148
2149 static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm,
2150                                    struct iwl_mvm_scan_params *params,
2151                                    struct ieee80211_vif *vif, int type,
2152                                    u16 gen_flags)
2153 {
2154         u8 flags = 0;
2155
2156         if (iwl_mvm_is_cdb_supported(mvm)) {
2157                 if (params->respect_p2p_go)
2158                         flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB;
2159                 if (params->respect_p2p_go_hb)
2160                         flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2161         } else {
2162                 if (params->respect_p2p_go)
2163                         flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB |
2164                                 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2165         }
2166
2167         if (params->scan_6ghz &&
2168             fw_has_capa(&mvm->fw->ucode_capa,
2169                         IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT))
2170                 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT;
2171
2172         /* Passive and AP interface -> ACS (automatic channel selection) */
2173         if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE &&
2174             ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP &&
2175             iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF,
2176                                     0) >= 1)
2177                 flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS;
2178
2179         return flags;
2180 }
2181
2182 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2183                                    struct iwl_mvm_scan_params *params,
2184                                    struct ieee80211_vif *vif)
2185 {
2186         u16 flags = 0;
2187
2188         if (params->n_ssids == 0)
2189                 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2190
2191         if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2192                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2193
2194         if (iwl_mvm_is_scan_fragmented(params->type))
2195                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2196
2197         if (iwl_mvm_is_cdb_supported(mvm) &&
2198             iwl_mvm_is_scan_fragmented(params->hb_type))
2199                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2200
2201         if (iwl_mvm_rrm_scan_needed(mvm) &&
2202             fw_has_capa(&mvm->fw->ucode_capa,
2203                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2204                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2205
2206         if (params->pass_all)
2207                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2208         else
2209                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2210
2211         if (!iwl_mvm_is_regular_scan(params))
2212                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2213
2214         if (params->iter_notif)
2215                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2216
2217 #ifdef CONFIG_IWLWIFI_DEBUGFS
2218         if (mvm->scan_iter_notif_enabled)
2219                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2220 #endif
2221
2222         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2223                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2224
2225         if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2226                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2227
2228         /*
2229          * Extended dwell is relevant only for low band to start with, as it is
2230          * being used for social channles only (1, 6, 11), so we can check
2231          * only scan type on low band also for CDB.
2232          */
2233         if (iwl_mvm_is_regular_scan(params) &&
2234             vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2235             !iwl_mvm_is_scan_fragmented(params->type) &&
2236             !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2237             !iwl_mvm_is_oce_supported(mvm))
2238                 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2239
2240         if (iwl_mvm_is_oce_supported(mvm)) {
2241                 if ((params->flags &
2242                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2243                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2244                 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2245                  * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2246                  * the same bit, we need to make sure that we use this bit here
2247                  * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2248                  * used. */
2249                 if ((params->flags &
2250                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2251                      !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2252                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2253                 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2254                         flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2255         }
2256
2257         return flags;
2258 }
2259
2260 static int
2261 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2262                                struct iwl_scan_umac_schedule *schedule,
2263                                __le16 *delay)
2264 {
2265         int i;
2266         if (WARN_ON(!params->n_scan_plans ||
2267                     params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2268                 return -EINVAL;
2269
2270         for (i = 0; i < params->n_scan_plans; i++) {
2271                 struct cfg80211_sched_scan_plan *scan_plan =
2272                         &params->scan_plans[i];
2273
2274                 schedule[i].iter_count = scan_plan->iterations;
2275                 schedule[i].interval =
2276                         cpu_to_le16(scan_plan->interval);
2277         }
2278
2279         /*
2280          * If the number of iterations of the last scan plan is set to
2281          * zero, it should run infinitely. However, this is not always the case.
2282          * For example, when regular scan is requested the driver sets one scan
2283          * plan with one iteration.
2284          */
2285         if (!schedule[params->n_scan_plans - 1].iter_count)
2286                 schedule[params->n_scan_plans - 1].iter_count = 0xff;
2287
2288         *delay = cpu_to_le16(params->delay);
2289
2290         return 0;
2291 }
2292
2293 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2294                              struct iwl_mvm_scan_params *params,
2295                              int type, int uid)
2296 {
2297         struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2298         struct iwl_scan_umac_chan_param *chan_param;
2299         void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2300         void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2301                 mvm->fw->ucode_capa.n_scan_channels;
2302         struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2303                 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
2304         struct iwl_scan_req_umac_tail_v1 *tail_v1;
2305         struct iwl_ssid_ie *direct_scan;
2306         int ret = 0;
2307         u32 ssid_bitmap = 0;
2308         u8 channel_flags = 0;
2309         u16 gen_flags;
2310         struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2311
2312         chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2313
2314         iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2315
2316         cmd->uid = cpu_to_le32(uid);
2317         gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2318         cmd->general_flags = cpu_to_le16(gen_flags);
2319         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2320                 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2321                         cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2322                                                         IWL_SCAN_NUM_OF_FRAGS;
2323                 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2324                         cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2325                                                         IWL_SCAN_NUM_OF_FRAGS;
2326
2327                 cmd->v8.general_flags2 =
2328                         IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2329         }
2330
2331         cmd->scan_start_mac_id = scan_vif->id;
2332
2333         if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2334                 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2335
2336         if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2337                 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2338                                 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2339                                 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2340
2341                 /* set fragmented ebs for fragmented scan on HB channels */
2342                 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2343                         if (gen_flags &
2344                             IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2345                             (!iwl_mvm_is_cdb_supported(mvm) &&
2346                              gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2347                                 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2348                 }
2349         }
2350
2351         chan_param->flags = channel_flags;
2352         chan_param->count = params->n_channels;
2353
2354         ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2355                                              &tail_v2->delay);
2356         if (ret)
2357                 return ret;
2358
2359         if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2360                 tail_v2->preq = params->preq;
2361                 direct_scan = tail_v2->direct_scan;
2362         } else {
2363                 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2364                 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2365                                                   &params->preq);
2366                 direct_scan = tail_v1->direct_scan;
2367         }
2368         iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2369         iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2370                                        params->n_channels, ssid_bitmap,
2371                                        cmd_data);
2372         return 0;
2373 }
2374
2375 static void
2376 iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm,
2377                                      struct iwl_mvm_scan_params *params,
2378                                      struct ieee80211_vif *vif,
2379                                      struct iwl_scan_general_params_v11 *gp,
2380                                      u16 gen_flags, u8 gen_flags2,
2381                                      u32 version)
2382 {
2383         struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2384
2385         iwl_mvm_scan_umac_dwell_v11(mvm, gp, params);
2386
2387         IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n",
2388                        gen_flags, gen_flags2);
2389
2390         gp->flags = cpu_to_le16(gen_flags);
2391         gp->flags2 = gen_flags2;
2392
2393         if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2394                 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2395         if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2396                 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2397
2398         mvm->scan_link_id = 0;
2399
2400         if (version < 16) {
2401                 gp->scan_start_mac_or_link_id = scan_vif->id;
2402         } else {
2403                 struct iwl_mvm_vif_link_info *link_info =
2404                         scan_vif->link[params->tsf_report_link_id];
2405
2406                 mvm->scan_link_id = params->tsf_report_link_id;
2407                 if (!WARN_ON(!link_info))
2408                         gp->scan_start_mac_or_link_id = link_info->fw_link_id;
2409         }
2410 }
2411
2412 static void
2413 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2414                                   struct iwl_scan_probe_params_v3 *pp)
2415 {
2416         pp->preq = params->preq;
2417         pp->ssid_num = params->n_ssids;
2418         iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2419 }
2420
2421 static void
2422 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2423                                   struct iwl_scan_probe_params_v4 *pp,
2424                                   u32 *bitmap_ssid)
2425 {
2426         pp->preq = params->preq;
2427         iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2428 }
2429
2430 static void
2431 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2432                                struct iwl_mvm_scan_params *params,
2433                                struct ieee80211_vif *vif,
2434                                struct iwl_scan_channel_params_v4 *cp,
2435                                u32 channel_cfg_flags)
2436 {
2437         cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2438         cp->count = params->n_channels;
2439         cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2440
2441         iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2442                                           params->n_channels,
2443                                           channel_cfg_flags,
2444                                           vif->type);
2445 }
2446
2447 static void
2448 iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm,
2449                                struct iwl_mvm_scan_params *params,
2450                                struct ieee80211_vif *vif,
2451                                struct iwl_scan_channel_params_v7 *cp,
2452                                u32 channel_cfg_flags,
2453                                u32 version)
2454 {
2455         cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2456         cp->count = params->n_channels;
2457         cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2458         cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2459
2460         iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp,
2461                                           params->n_channels,
2462                                           channel_cfg_flags,
2463                                           vif->type, version);
2464
2465         if (params->enable_6ghz_passive) {
2466                 struct ieee80211_supported_band *sband =
2467                         &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2468                 u32 i;
2469
2470                 for (i = 0; i < sband->n_channels; i++) {
2471                         struct ieee80211_channel *channel =
2472                                 &sband->channels[i];
2473
2474                         struct iwl_scan_channel_cfg_umac *cfg =
2475                                 &cp->channel_config[cp->count];
2476
2477                         if (!cfg80211_channel_is_psc(channel))
2478                                 continue;
2479
2480                         cfg->channel_num = channel->hw_value;
2481                         cfg->v5.iter_count = 1;
2482                         cfg->v5.iter_interval = 0;
2483
2484                         if (version < 17) {
2485                                 cfg->flags = 0;
2486                                 cfg->v2.band = PHY_BAND_6;
2487                         } else {
2488                                 cfg->flags = cpu_to_le32(PHY_BAND_6 <<
2489                                                          IWL_CHAN_CFG_FLAGS_BAND_POS);
2490                                 cfg->v5.psd_20 =
2491                                         IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
2492                         }
2493                         cp->count++;
2494                 }
2495         }
2496 }
2497
2498 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2499                                  struct iwl_mvm_scan_params *params, int type,
2500                                  int uid)
2501 {
2502         struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2503         struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2504         int ret;
2505         u16 gen_flags;
2506
2507         cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type));
2508         cmd->uid = cpu_to_le32(uid);
2509
2510         gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2511         iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2512                                              &scan_p->general_params,
2513                                              gen_flags, 0, 12);
2514
2515         ret = iwl_mvm_fill_scan_sched_params(params,
2516                                              scan_p->periodic_params.schedule,
2517                                              &scan_p->periodic_params.delay);
2518         if (ret)
2519                 return ret;
2520
2521         iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2522         iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2523                                        &scan_p->channel_params, 0);
2524
2525         return 0;
2526 }
2527
2528 static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm,
2529                                            struct ieee80211_vif *vif,
2530                                            struct iwl_mvm_scan_params *params,
2531                                            int type, int uid, u32 version)
2532 {
2533         struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd;
2534         struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params;
2535         struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params;
2536         struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2537         int ret;
2538         u16 gen_flags;
2539         u8 gen_flags2;
2540         u32 bitmap_ssid = 0;
2541
2542         cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type));
2543         cmd->uid = cpu_to_le32(uid);
2544
2545         gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2546
2547         if (version >= 15)
2548                 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type,
2549                                                       gen_flags);
2550         else
2551                 gen_flags2 = 0;
2552
2553         iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2554                                              &scan_p->general_params,
2555                                              gen_flags, gen_flags2, version);
2556
2557         ret = iwl_mvm_fill_scan_sched_params(params,
2558                                              scan_p->periodic_params.schedule,
2559                                              &scan_p->periodic_params.delay);
2560         if (ret)
2561                 return ret;
2562
2563         if (!params->scan_6ghz) {
2564                 iwl_mvm_scan_umac_fill_probe_p_v4(params,
2565                                                   &scan_p->probe_params,
2566                                                   &bitmap_ssid);
2567                 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif,
2568                                                &scan_p->channel_params,
2569                                                bitmap_ssid,
2570                                                version);
2571                 return 0;
2572         } else {
2573                 pb->preq = params->preq;
2574         }
2575
2576         cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2577         cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2578         cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2579
2580         iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb);
2581
2582         cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params,
2583                                                          params->n_channels,
2584                                                          pb, cp, vif->type,
2585                                                          version);
2586         if (!cp->count)
2587                 return -EINVAL;
2588
2589         if (!params->n_ssids ||
2590             (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2591                 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2592
2593         return 0;
2594 }
2595
2596 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2597                                  struct iwl_mvm_scan_params *params, int type,
2598                                  int uid)
2599 {
2600         return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14);
2601 }
2602
2603 static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2604                                  struct iwl_mvm_scan_params *params, int type,
2605                                  int uid)
2606 {
2607         return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15);
2608 }
2609
2610 static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2611                                  struct iwl_mvm_scan_params *params, int type,
2612                                  int uid)
2613 {
2614         return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16);
2615 }
2616
2617 static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2618                                  struct iwl_mvm_scan_params *params, int type,
2619                                  int uid)
2620 {
2621         return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17);
2622 }
2623
2624 static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2625 {
2626         return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2627 }
2628
2629 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2630 {
2631         bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2632                                          IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2633
2634         /* This looks a bit arbitrary, but the idea is that if we run
2635          * out of possible simultaneous scans and the userspace is
2636          * trying to run a scan type that is already running, we
2637          * return -EBUSY.  But if the userspace wants to start a
2638          * different type of scan, we stop the opposite type to make
2639          * space for the new request.  The reason is backwards
2640          * compatibility with old wpa_supplicant that wouldn't stop a
2641          * scheduled scan before starting a normal scan.
2642          */
2643
2644         /* FW supports only a single periodic scan */
2645         if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2646             mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2647                 return -EBUSY;
2648
2649         if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2650                 return 0;
2651
2652         /* Use a switch, even though this is a bitmask, so that more
2653          * than one bits set will fall in default and we will warn.
2654          */
2655         switch (type) {
2656         case IWL_MVM_SCAN_REGULAR:
2657                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2658                         return -EBUSY;
2659                 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2660         case IWL_MVM_SCAN_SCHED:
2661                 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2662                         return -EBUSY;
2663                 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2664         case IWL_MVM_SCAN_NETDETECT:
2665                 /* For non-unified images, there's no need to stop
2666                  * anything for net-detect since the firmware is
2667                  * restarted anyway.  This way, any sched scans that
2668                  * were running will be restarted when we resume.
2669                  */
2670                 if (!unified_image)
2671                         return 0;
2672
2673                 /* If this is a unified image and we ran out of scans,
2674                  * we need to stop something.  Prefer stopping regular
2675                  * scans, because the results are useless at this
2676                  * point, and we should be able to keep running
2677                  * another scheduled scan while suspended.
2678                  */
2679                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2680                         return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2681                                                  true);
2682                 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2683                         return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2684                                                  true);
2685                 /* Something is wrong if no scan was running but we
2686                  * ran out of scans.
2687                  */
2688                 fallthrough;
2689         default:
2690                 WARN_ON(1);
2691                 break;
2692         }
2693
2694         return -EIO;
2695 }
2696
2697 #define SCAN_TIMEOUT 30000
2698
2699 void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2700 {
2701         struct delayed_work *delayed_work = to_delayed_work(work);
2702         struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2703                                            scan_timeout_dwork);
2704
2705         IWL_ERR(mvm, "regular scan timed out\n");
2706
2707         iwl_force_nmi(mvm->trans);
2708 }
2709
2710 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2711                                    struct iwl_mvm_scan_params *params,
2712                                    struct ieee80211_vif *vif)
2713 {
2714         if (iwl_mvm_is_cdb_supported(mvm)) {
2715                 params->type =
2716                         iwl_mvm_get_scan_type_band(mvm, vif,
2717                                                    NL80211_BAND_2GHZ);
2718                 params->hb_type =
2719                         iwl_mvm_get_scan_type_band(mvm, vif,
2720                                                    NL80211_BAND_5GHZ);
2721         } else {
2722                 params->type = iwl_mvm_get_scan_type(mvm, vif);
2723         }
2724 }
2725
2726 struct iwl_scan_umac_handler {
2727         u8 version;
2728         int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2729                        struct iwl_mvm_scan_params *params, int type, int uid);
2730 };
2731
2732 #define IWL_SCAN_UMAC_HANDLER(_ver) {           \
2733         .version = _ver,                        \
2734         .handler = iwl_mvm_scan_umac_v##_ver,   \
2735 }
2736
2737 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2738         /* set the newest version first to shorten the list traverse time */
2739         IWL_SCAN_UMAC_HANDLER(17),
2740         IWL_SCAN_UMAC_HANDLER(16),
2741         IWL_SCAN_UMAC_HANDLER(15),
2742         IWL_SCAN_UMAC_HANDLER(14),
2743         IWL_SCAN_UMAC_HANDLER(12),
2744 };
2745
2746 static void iwl_mvm_mei_scan_work(struct work_struct *wk)
2747 {
2748         struct iwl_mei_scan_filter *scan_filter =
2749                 container_of(wk, struct iwl_mei_scan_filter, scan_work);
2750         struct iwl_mvm *mvm =
2751                 container_of(scan_filter, struct iwl_mvm, mei_scan_filter);
2752         struct iwl_mvm_csme_conn_info *info;
2753         struct sk_buff *skb;
2754         u8 bssid[ETH_ALEN];
2755
2756         mutex_lock(&mvm->mutex);
2757         info = iwl_mvm_get_csme_conn_info(mvm);
2758         memcpy(bssid, info->conn_info.bssid, ETH_ALEN);
2759         mutex_unlock(&mvm->mutex);
2760
2761         while ((skb = skb_dequeue(&scan_filter->scan_res))) {
2762                 struct ieee80211_mgmt *mgmt = (void *)skb->data;
2763
2764                 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN))
2765                         ieee80211_rx_irqsafe(mvm->hw, skb);
2766                 else
2767                         kfree_skb(skb);
2768         }
2769 }
2770
2771 void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter)
2772 {
2773         skb_queue_head_init(&mei_scan_filter->scan_res);
2774         INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work);
2775 }
2776
2777 /* In case CSME is connected and has link protection set, this function will
2778  * override the scan request to scan only the associated channel and only for
2779  * the associated SSID.
2780  */
2781 static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm,
2782                                      struct iwl_mvm_scan_params *params)
2783 {
2784         struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm);
2785         struct iwl_mei_conn_info *conn_info;
2786         struct ieee80211_channel *chan;
2787         int scan_iters, i;
2788
2789         if (!info) {
2790                 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n");
2791                 return;
2792         }
2793
2794         conn_info = &info->conn_info;
2795         if (!info->conn_info.lp_state || !info->conn_info.ssid_len)
2796                 return;
2797
2798         if (!params->n_channels || !params->n_ssids)
2799                 return;
2800
2801         mvm->mei_scan_filter.is_mei_limited_scan = true;
2802
2803         chan = ieee80211_get_channel(mvm->hw->wiphy,
2804                                      ieee80211_channel_to_frequency(conn_info->channel,
2805                                                                     conn_info->band));
2806         if (!chan) {
2807                 IWL_DEBUG_SCAN(mvm,
2808                                "Failed to get CSME channel (chan=%u band=%u)\n",
2809                                conn_info->channel, conn_info->band);
2810                 return;
2811         }
2812
2813         /* The mei filtered scan must find the AP, otherwise CSME will
2814          * take the NIC ownership. Add several iterations on the channel to
2815          * make the scan more robust.
2816          */
2817         scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels);
2818         params->n_channels = scan_iters;
2819         for (i = 0; i < scan_iters; i++)
2820                 params->channels[i] = chan;
2821
2822         IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters);
2823
2824         params->n_ssids = 1;
2825         params->ssids[0].ssid_len = conn_info->ssid_len;
2826         memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len);
2827 }
2828
2829 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2830                                   struct ieee80211_vif *vif,
2831                                   struct iwl_host_cmd *hcmd,
2832                                   struct iwl_mvm_scan_params *params,
2833                                   int type)
2834 {
2835         int uid, i, err;
2836         u8 scan_ver;
2837
2838         lockdep_assert_held(&mvm->mutex);
2839         memset(mvm->scan_cmd, 0, mvm->scan_cmd_size);
2840
2841         iwl_mvm_mei_limited_scan(mvm, params);
2842
2843         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2844                 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2845
2846                 return iwl_mvm_scan_lmac(mvm, vif, params);
2847         }
2848
2849         uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2850         if (uid < 0)
2851                 return uid;
2852
2853         hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC);
2854
2855         scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
2856                                          IWL_FW_CMD_VER_UNKNOWN);
2857
2858         for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2859                 const struct iwl_scan_umac_handler *ver_handler =
2860                         &iwl_scan_umac_handlers[i];
2861
2862                 if (ver_handler->version != scan_ver)
2863                         continue;
2864
2865                 err = ver_handler->handler(mvm, vif, params, type, uid);
2866                 return err ? : uid;
2867         }
2868
2869         err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2870         if (err)
2871                 return err;
2872
2873         return uid;
2874 }
2875
2876 struct iwl_mvm_scan_respect_p2p_go_iter_data {
2877         struct ieee80211_vif *current_vif;
2878         bool p2p_go;
2879         enum nl80211_band band;
2880 };
2881
2882 static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac,
2883                                              struct ieee80211_vif *vif)
2884 {
2885         struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data;
2886         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2887
2888         /* exclude the given vif */
2889         if (vif == data->current_vif)
2890                 return;
2891
2892         if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) {
2893                 u32 link_id;
2894
2895                 for (link_id = 0;
2896                      link_id < ARRAY_SIZE(mvmvif->link);
2897                      link_id++) {
2898                         struct iwl_mvm_vif_link_info *link =
2899                                 mvmvif->link[link_id];
2900
2901                         if (link && link->phy_ctxt->id < NUM_PHY_CTX &&
2902                             (data->band == NUM_NL80211_BANDS ||
2903                              link->phy_ctxt->channel->band == data->band)) {
2904                                 data->p2p_go = true;
2905                                 break;
2906                         }
2907                 }
2908         }
2909 }
2910
2911 static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2912                                         struct ieee80211_vif *vif,
2913                                         bool low_latency,
2914                                         enum nl80211_band band)
2915 {
2916         struct iwl_mvm_scan_respect_p2p_go_iter_data data = {
2917                 .current_vif = vif,
2918                 .p2p_go = false,
2919                 .band = band,
2920         };
2921
2922         if (!low_latency)
2923                 return false;
2924
2925         ieee80211_iterate_active_interfaces_atomic(mvm->hw,
2926                                                    IEEE80211_IFACE_ITER_NORMAL,
2927                                                    iwl_mvm_scan_respect_p2p_go_iter,
2928                                                    &data);
2929
2930         return data.p2p_go;
2931 }
2932
2933 static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm,
2934                                             struct ieee80211_vif *vif,
2935                                             enum nl80211_band band)
2936 {
2937         bool low_latency = iwl_mvm_low_latency_band(mvm, band);
2938
2939         return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band);
2940 }
2941
2942 static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2943                                        struct ieee80211_vif *vif)
2944 {
2945         bool low_latency = iwl_mvm_low_latency(mvm);
2946
2947         return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency,
2948                                            NUM_NL80211_BANDS);
2949 }
2950
2951 static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm,
2952                                         struct iwl_mvm_scan_params *params,
2953                                         struct ieee80211_vif *vif)
2954 {
2955         if (iwl_mvm_is_cdb_supported(mvm)) {
2956                 params->respect_p2p_go =
2957                         iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2958                                                         NL80211_BAND_2GHZ);
2959                 params->respect_p2p_go_hb =
2960                         iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2961                                                         NL80211_BAND_5GHZ);
2962         } else {
2963                 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif);
2964         }
2965 }
2966
2967 static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm,
2968                                       struct ieee80211_vif *vif,
2969                                       struct cfg80211_scan_request *req,
2970                                       struct ieee80211_scan_ies *ies,
2971                                       int type)
2972 {
2973         struct iwl_host_cmd hcmd = {
2974                 .len = { iwl_mvm_scan_size(mvm), },
2975                 .data = { mvm->scan_cmd, },
2976                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2977         };
2978         struct iwl_mvm_scan_params params = {};
2979         int ret, uid;
2980         struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2981
2982         lockdep_assert_held(&mvm->mutex);
2983
2984         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2985                 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2986                 return -EBUSY;
2987         }
2988
2989         ret = iwl_mvm_check_running_scans(mvm, type);
2990         if (ret)
2991                 return ret;
2992
2993         /* we should have failed registration if scan_cmd was NULL */
2994         if (WARN_ON(!mvm->scan_cmd))
2995                 return -ENOMEM;
2996
2997         if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2998                 return -ENOBUFS;
2999
3000         params.n_ssids = req->n_ssids;
3001         params.flags = req->flags;
3002         params.n_channels = req->n_channels;
3003         params.delay = 0;
3004         params.ssids = req->ssids;
3005         params.channels = req->channels;
3006         params.mac_addr = req->mac_addr;
3007         params.mac_addr_mask = req->mac_addr_mask;
3008         params.no_cck = req->no_cck;
3009         params.pass_all = true;
3010         params.n_match_sets = 0;
3011         params.match_sets = NULL;
3012         ether_addr_copy(params.bssid, req->bssid);
3013
3014         params.scan_plans = &scan_plan;
3015         params.n_scan_plans = 1;
3016
3017         params.n_6ghz_params = req->n_6ghz_params;
3018         params.scan_6ghz_params = req->scan_6ghz_params;
3019         params.scan_6ghz = req->scan_6ghz;
3020         iwl_mvm_fill_scan_type(mvm, &params, vif);
3021         iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
3022
3023         if (req->duration)
3024                 params.iter_notif = true;
3025
3026         params.tsf_report_link_id = req->tsf_report_link_id;
3027         if (params.tsf_report_link_id < 0) {
3028                 if (vif->active_links)
3029                         params.tsf_report_link_id = __ffs(vif->active_links);
3030                 else
3031                         params.tsf_report_link_id = 0;
3032         }
3033
3034         iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
3035
3036         iwl_mvm_scan_6ghz_passive_scan(mvm, &params, vif);
3037
3038         uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
3039
3040         if (uid < 0)
3041                 return uid;
3042
3043         iwl_mvm_pause_tcm(mvm, false);
3044
3045         ret = iwl_mvm_send_cmd(mvm, &hcmd);
3046         if (ret) {
3047                 /* If the scan failed, it usually means that the FW was unable
3048                  * to allocate the time events. Warn on it, but maybe we
3049                  * should try to send the command again with different params.
3050                  */
3051                 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
3052                 iwl_mvm_resume_tcm(mvm);
3053                 return ret;
3054         }
3055
3056         IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n",
3057                        type, uid);
3058
3059         mvm->scan_uid_status[uid] = type;
3060         mvm->scan_status |= type;
3061
3062         if (type == IWL_MVM_SCAN_REGULAR) {
3063                 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
3064                 schedule_delayed_work(&mvm->scan_timeout_dwork,
3065                                       msecs_to_jiffies(SCAN_TIMEOUT));
3066         }
3067
3068         if (params.enable_6ghz_passive)
3069                 mvm->last_6ghz_passive_scan_jiffies = jiffies;
3070
3071         return 0;
3072 }
3073
3074 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3075                            struct cfg80211_scan_request *req,
3076                            struct ieee80211_scan_ies *ies)
3077 {
3078         return _iwl_mvm_single_scan_start(mvm, vif, req, ies,
3079                                           IWL_MVM_SCAN_REGULAR);
3080 }
3081
3082 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
3083                              struct ieee80211_vif *vif,
3084                              struct cfg80211_sched_scan_request *req,
3085                              struct ieee80211_scan_ies *ies,
3086                              int type)
3087 {
3088         struct iwl_host_cmd hcmd = {
3089                 .len = { iwl_mvm_scan_size(mvm), },
3090                 .data = { mvm->scan_cmd, },
3091                 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
3092         };
3093         struct iwl_mvm_scan_params params = {};
3094         int ret, uid;
3095         int i, j;
3096         bool non_psc_included = false;
3097
3098         lockdep_assert_held(&mvm->mutex);
3099
3100         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
3101                 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
3102                 return -EBUSY;
3103         }
3104
3105         ret = iwl_mvm_check_running_scans(mvm, type);
3106         if (ret)
3107                 return ret;
3108
3109         /* we should have failed registration if scan_cmd was NULL */
3110         if (WARN_ON(!mvm->scan_cmd))
3111                 return -ENOMEM;
3112
3113
3114         params.n_ssids = req->n_ssids;
3115         params.flags = req->flags;
3116         params.n_channels = req->n_channels;
3117         params.ssids = req->ssids;
3118         params.channels = req->channels;
3119         params.mac_addr = req->mac_addr;
3120         params.mac_addr_mask = req->mac_addr_mask;
3121         params.no_cck = false;
3122         params.pass_all =  iwl_mvm_scan_pass_all(mvm, req);
3123         params.n_match_sets = req->n_match_sets;
3124         params.match_sets = req->match_sets;
3125         eth_broadcast_addr(params.bssid);
3126         if (!req->n_scan_plans)
3127                 return -EINVAL;
3128
3129         params.n_scan_plans = req->n_scan_plans;
3130         params.scan_plans = req->scan_plans;
3131
3132         iwl_mvm_fill_scan_type(mvm, &params, vif);
3133         iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
3134
3135         /* In theory, LMAC scans can handle a 32-bit delay, but since
3136          * waiting for over 18 hours to start the scan is a bit silly
3137          * and to keep it aligned with UMAC scans (which only support
3138          * 16-bit delays), trim it down to 16-bits.
3139          */
3140         if (req->delay > U16_MAX) {
3141                 IWL_DEBUG_SCAN(mvm,
3142                                "delay value is > 16-bits, set to max possible\n");
3143                 params.delay = U16_MAX;
3144         } else {
3145                 params.delay = req->delay;
3146         }
3147
3148         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
3149         if (ret)
3150                 return ret;
3151
3152         iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
3153
3154         /* for 6 GHZ band only PSC channels need to be added */
3155         for (i = 0; i < params.n_channels; i++) {
3156                 struct ieee80211_channel *channel = params.channels[i];
3157
3158                 if (channel->band == NL80211_BAND_6GHZ &&
3159                     !cfg80211_channel_is_psc(channel)) {
3160                         non_psc_included = true;
3161                         break;
3162                 }
3163         }
3164
3165         if (non_psc_included) {
3166                 params.channels = kmemdup(params.channels,
3167                                           sizeof(params.channels[0]) *
3168                                           params.n_channels,
3169                                           GFP_KERNEL);
3170                 if (!params.channels)
3171                         return -ENOMEM;
3172
3173                 for (i = j = 0; i < params.n_channels; i++) {
3174                         if (params.channels[i]->band == NL80211_BAND_6GHZ &&
3175                             !cfg80211_channel_is_psc(params.channels[i]))
3176                                 continue;
3177                         params.channels[j++] = params.channels[i];
3178                 }
3179                 params.n_channels = j;
3180         }
3181
3182         if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
3183                 ret = -ENOBUFS;
3184                 goto out;
3185         }
3186
3187         uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
3188         if (uid < 0) {
3189                 ret = uid;
3190                 goto out;
3191         }
3192
3193         ret = iwl_mvm_send_cmd(mvm, &hcmd);
3194         if (!ret) {
3195                 IWL_DEBUG_SCAN(mvm,
3196                                "Sched scan request send success: type=%u, uid=%u\n",
3197                                type, uid);
3198                 mvm->scan_uid_status[uid] = type;
3199                 mvm->scan_status |= type;
3200         } else {
3201                 /* If the scan failed, it usually means that the FW was unable
3202                  * to allocate the time events. Warn on it, but maybe we
3203                  * should try to send the command again with different params.
3204                  */
3205                 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
3206                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3207         }
3208
3209 out:
3210         if (non_psc_included)
3211                 kfree(params.channels);
3212         return ret;
3213 }
3214
3215 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
3216                                          struct iwl_rx_cmd_buffer *rxb)
3217 {
3218         struct iwl_rx_packet *pkt = rxb_addr(rxb);
3219         struct iwl_umac_scan_complete *notif = (void *)pkt->data;
3220         u32 uid = __le32_to_cpu(notif->uid);
3221         bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
3222         bool select_links = false;
3223
3224         mvm->mei_scan_filter.is_mei_limited_scan = false;
3225
3226         IWL_DEBUG_SCAN(mvm,
3227                        "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n",
3228                        uid, mvm->scan_uid_status[uid],
3229                        notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
3230                                 "completed" : "aborted",
3231                        iwl_mvm_ebs_status_str(notif->ebs_status));
3232
3233         IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n",
3234                        mvm->scan_status);
3235
3236         IWL_DEBUG_SCAN(mvm,
3237                        "Scan completed: line=%u, iter=%u, elapsed time=%u\n",
3238                        notif->last_schedule, notif->last_iter,
3239                        __le32_to_cpu(notif->time_from_last_iter));
3240
3241         if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
3242                 return;
3243
3244         /* if the scan is already stopping, we don't need to notify mac80211 */
3245         if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
3246                 struct cfg80211_scan_info info = {
3247                         .aborted = aborted,
3248                         .scan_start_tsf = mvm->scan_start,
3249                 };
3250                 struct iwl_mvm_vif *scan_vif = mvm->scan_vif;
3251                 struct iwl_mvm_vif_link_info *link_info =
3252                         scan_vif->link[mvm->scan_link_id];
3253
3254                 /* It is possible that by the time the scan is complete the link
3255                  * was already removed and is not valid.
3256                  */
3257                 if (link_info)
3258                         memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN);
3259                 else
3260                         IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n");
3261
3262                 ieee80211_scan_completed(mvm->hw, &info);
3263                 mvm->scan_vif = NULL;
3264                 cancel_delayed_work(&mvm->scan_timeout_dwork);
3265                 iwl_mvm_resume_tcm(mvm);
3266         } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
3267                 ieee80211_sched_scan_stopped(mvm->hw);
3268                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3269         } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) {
3270                 IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n");
3271                 /*
3272                  * Other scan types won't necessarily scan for the MLD links channels.
3273                  * Therefore, only select links after successful internal scan.
3274                  */
3275                 select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED;
3276         }
3277
3278         mvm->scan_status &= ~mvm->scan_uid_status[uid];
3279
3280         IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n",
3281                        mvm->scan_status);
3282
3283         if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
3284             notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
3285                 mvm->last_ebs_successful = false;
3286
3287         mvm->scan_uid_status[uid] = 0;
3288
3289         if (select_links)
3290                 wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk);
3291 }
3292
3293 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
3294                                               struct iwl_rx_cmd_buffer *rxb)
3295 {
3296         struct iwl_rx_packet *pkt = rxb_addr(rxb);
3297         struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
3298
3299         mvm->scan_start = le64_to_cpu(notif->start_tsf);
3300
3301         IWL_DEBUG_SCAN(mvm,
3302                        "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
3303                        notif->status, notif->scanned_channels);
3304
3305         if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
3306                 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
3307                 ieee80211_sched_scan_results(mvm->hw);
3308                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
3309         }
3310
3311         IWL_DEBUG_SCAN(mvm,
3312                        "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
3313                        mvm->scan_start);
3314 }
3315
3316 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type, bool *wait)
3317 {
3318         struct iwl_umac_scan_abort abort_cmd = {};
3319         struct iwl_host_cmd cmd = {
3320                 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
3321                 .len = { sizeof(abort_cmd), },
3322                 .data = { &abort_cmd, },
3323                 .flags = CMD_SEND_IN_RFKILL,
3324         };
3325
3326         int uid, ret;
3327         u32 status = IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND;
3328
3329         lockdep_assert_held(&mvm->mutex);
3330
3331         *wait = true;
3332
3333         /* We should always get a valid index here, because we already
3334          * checked that this type of scan was running in the generic
3335          * code.
3336          */
3337         uid = iwl_mvm_scan_uid_by_status(mvm, type);
3338         if (WARN_ON_ONCE(uid < 0))
3339                 return uid;
3340
3341         abort_cmd.uid = cpu_to_le32(uid);
3342
3343         IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
3344
3345         ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
3346
3347         IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status);
3348         if (!ret)
3349                 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3350
3351         /* Handle the case that the FW is no longer familiar with the scan that
3352          * is to be stopped. In such a case, it is expected that the scan
3353          * complete notification was already received but not yet processed.
3354          * In such a case, there is no need to wait for a scan complete
3355          * notification and the flow should continue similar to the case that
3356          * the scan was really aborted.
3357          */
3358         if (status == IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND) {
3359                 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3360                 *wait = false;
3361         }
3362
3363         return ret;
3364 }
3365
3366 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
3367 {
3368         struct iwl_notification_wait wait_scan_done;
3369         static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
3370                                               SCAN_OFFLOAD_COMPLETE, };
3371         int ret;
3372         bool wait = true;
3373
3374         lockdep_assert_held(&mvm->mutex);
3375
3376         iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
3377                                    scan_done_notif,
3378                                    ARRAY_SIZE(scan_done_notif),
3379                                    NULL, NULL);
3380
3381         IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
3382
3383         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
3384                 ret = iwl_mvm_umac_scan_abort(mvm, type, &wait);
3385         else
3386                 ret = iwl_mvm_lmac_scan_abort(mvm);
3387
3388         if (ret) {
3389                 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
3390                 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3391                 return ret;
3392         } else if (!wait) {
3393                 IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type);
3394                 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3395                 return 0;
3396         }
3397
3398         return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
3399                                      1 * HZ);
3400 }
3401
3402 static size_t iwl_scan_req_umac_get_size(u8 scan_ver)
3403 {
3404         switch (scan_ver) {
3405         case 12:
3406                 return sizeof(struct iwl_scan_req_umac_v12);
3407         case 14:
3408         case 15:
3409         case 16:
3410         case 17:
3411                 return sizeof(struct iwl_scan_req_umac_v17);
3412         }
3413
3414         return 0;
3415 }
3416
3417 size_t iwl_mvm_scan_size(struct iwl_mvm *mvm)
3418 {
3419         int base_size, tail_size;
3420         u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
3421                                             IWL_FW_CMD_VER_UNKNOWN);
3422
3423         base_size = iwl_scan_req_umac_get_size(scan_ver);
3424         if (base_size)
3425                 return base_size;
3426
3427
3428         if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
3429                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
3430         else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
3431                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
3432         else if (iwl_mvm_cdb_scan_api(mvm))
3433                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
3434         else
3435                 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
3436
3437         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3438                 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
3439                         tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
3440                 else
3441                         tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
3442
3443                 return base_size +
3444                         sizeof(struct iwl_scan_channel_cfg_umac) *
3445                                 mvm->fw->ucode_capa.n_scan_channels +
3446                         tail_size;
3447         }
3448         return sizeof(struct iwl_scan_req_lmac) +
3449                 sizeof(struct iwl_scan_channel_cfg_lmac) *
3450                 mvm->fw->ucode_capa.n_scan_channels +
3451                 sizeof(struct iwl_scan_probe_req_v1);
3452 }
3453
3454 /*
3455  * This function is used in nic restart flow, to inform mac80211 about scans
3456  * that was aborted by restart flow or by an assert.
3457  */
3458 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
3459 {
3460         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3461                 int uid, i;
3462
3463                 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
3464                 if (uid >= 0) {
3465                         struct cfg80211_scan_info info = {
3466                                 .aborted = true,
3467                         };
3468
3469                         cancel_delayed_work(&mvm->scan_timeout_dwork);
3470
3471                         ieee80211_scan_completed(mvm->hw, &info);
3472                         mvm->scan_uid_status[uid] = 0;
3473                 }
3474                 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
3475                 if (uid >= 0) {
3476                         /* Sched scan will be restarted by mac80211 in
3477                          * restart_hw, so do not report if FW is about to be
3478                          * restarted.
3479                          */
3480                         if (!mvm->fw_restart)
3481                                 ieee80211_sched_scan_stopped(mvm->hw);
3482                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3483                         mvm->scan_uid_status[uid] = 0;
3484                 }
3485                 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO);
3486                 if (uid >= 0) {
3487                         IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n");
3488                         mvm->scan_uid_status[uid] = 0;
3489                 }
3490
3491                 uid = iwl_mvm_scan_uid_by_status(mvm,
3492                                                  IWL_MVM_SCAN_STOPPING_REGULAR);
3493                 if (uid >= 0)
3494                         mvm->scan_uid_status[uid] = 0;
3495
3496                 uid = iwl_mvm_scan_uid_by_status(mvm,
3497                                                  IWL_MVM_SCAN_STOPPING_SCHED);
3498                 if (uid >= 0)
3499                         mvm->scan_uid_status[uid] = 0;
3500
3501                 uid = iwl_mvm_scan_uid_by_status(mvm,
3502                                                  IWL_MVM_SCAN_STOPPING_INT_MLO);
3503                 if (uid >= 0)
3504                         mvm->scan_uid_status[uid] = 0;
3505
3506                 /* We shouldn't have any UIDs still set.  Loop over all the
3507                  * UIDs to make sure there's nothing left there and warn if
3508                  * any is found.
3509                  */
3510                 for (i = 0; i < mvm->max_scans; i++) {
3511                         if (WARN_ONCE(mvm->scan_uid_status[i],
3512                                       "UMAC scan UID %d status was not cleaned\n",
3513                                       i))
3514                                 mvm->scan_uid_status[i] = 0;
3515                 }
3516         } else {
3517                 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3518                         struct cfg80211_scan_info info = {
3519                                 .aborted = true,
3520                         };
3521
3522                         cancel_delayed_work(&mvm->scan_timeout_dwork);
3523                         ieee80211_scan_completed(mvm->hw, &info);
3524                 }
3525
3526                 /* Sched scan will be restarted by mac80211 in
3527                  * restart_hw, so do not report if FW is about to be
3528                  * restarted.
3529                  */
3530                 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3531                     !mvm->fw_restart) {
3532                         ieee80211_sched_scan_stopped(mvm->hw);
3533                         mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3534                 }
3535         }
3536 }
3537
3538 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3539 {
3540         int ret;
3541
3542         IWL_DEBUG_SCAN(mvm,
3543                        "Request to stop scan: type=0x%x, status=0x%x\n",
3544                        type, mvm->scan_status);
3545
3546         if (!(mvm->scan_status & type))
3547                 return 0;
3548
3549         if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
3550                 ret = 0;
3551                 goto out;
3552         }
3553
3554         ret = iwl_mvm_scan_stop_wait(mvm, type);
3555         if (!ret)
3556                 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3557         else
3558                 IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n");
3559
3560 out:
3561         /* Clear the scan status so the next scan requests will
3562          * succeed and mark the scan as stopping, so that the Rx
3563          * handler doesn't do anything, as the scan was stopped from
3564          * above.
3565          */
3566         mvm->scan_status &= ~type;
3567
3568         if (type == IWL_MVM_SCAN_REGULAR) {
3569                 cancel_delayed_work(&mvm->scan_timeout_dwork);
3570                 if (notify) {
3571                         struct cfg80211_scan_info info = {
3572                                 .aborted = true,
3573                         };
3574
3575                         ieee80211_scan_completed(mvm->hw, &info);
3576                 }
3577         } else if (notify) {
3578                 ieee80211_sched_scan_stopped(mvm->hw);
3579                 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3580         }
3581
3582         return ret;
3583 }
3584
3585 static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm,
3586                                       struct ieee80211_vif *vif,
3587                                       struct ieee80211_channel **channels,
3588                                       size_t n_channels)
3589 {
3590         struct cfg80211_scan_request *req = NULL;
3591         struct ieee80211_scan_ies ies = {};
3592         size_t size, i;
3593         int ret;
3594
3595         lockdep_assert_held(&mvm->mutex);
3596
3597         IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n",
3598                        n_channels);
3599
3600         if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif) ||
3601             hweight16(vif->valid_links) == 1)
3602                 return -EINVAL;
3603
3604         size = struct_size(req, channels, n_channels);
3605         req = kzalloc(size, GFP_KERNEL);
3606         if (!req)
3607                 return -ENOMEM;
3608
3609         /* set the requested channels */
3610         for (i = 0; i < n_channels; i++)
3611                 req->channels[i] = channels[i];
3612
3613         req->n_channels = n_channels;
3614
3615         /* set the rates */
3616         for (i = 0; i < NUM_NL80211_BANDS; i++)
3617                 if (mvm->hw->wiphy->bands[i])
3618                         req->rates[i] =
3619                                 (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1;
3620
3621         req->wdev = ieee80211_vif_to_wdev(vif);
3622         req->wiphy = mvm->hw->wiphy;
3623         req->scan_start = jiffies;
3624         req->tsf_report_link_id = -1;
3625
3626         ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies,
3627                                          IWL_MVM_SCAN_INT_MLO);
3628         kfree(req);
3629
3630         IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret);
3631         return ret;
3632 }
3633
3634 int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
3635 {
3636         struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS];
3637         unsigned long usable_links = ieee80211_vif_usable_links(vif);
3638         size_t n_channels = 0;
3639         u8 link_id;
3640
3641         lockdep_assert_held(&mvm->mutex);
3642
3643         if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) {
3644                 IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n");
3645                 return -EBUSY;
3646         }
3647
3648         rcu_read_lock();
3649
3650         for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) {
3651                 struct ieee80211_bss_conf *link_conf =
3652                         rcu_dereference(vif->link_conf[link_id]);
3653
3654                 if (WARN_ON_ONCE(!link_conf))
3655                         continue;
3656
3657                 channels[n_channels++] = link_conf->chanreq.oper.chan;
3658         }
3659
3660         rcu_read_unlock();
3661
3662         if (!n_channels)
3663                 return -EINVAL;
3664
3665         return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels);
3666 }
3667
3668 static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm,
3669                                     enum nl80211_band band,
3670                                     u16 phy_chan_num)
3671 {
3672         struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band];
3673         int chan_idx;
3674
3675         if (WARN_ON_ONCE(!sband))
3676                 return -EINVAL;
3677
3678         for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) {
3679                 struct ieee80211_channel *channel = &sband->channels[chan_idx];
3680
3681                 if (channel->hw_value == phy_chan_num)
3682                         return chan_idx;
3683         }
3684
3685         return -EINVAL;
3686 }
3687
3688 static u32 iwl_mvm_div_by_db(u32 value, u8 db)
3689 {
3690         /*
3691          * 2^32 * 10**(i / 10) for i = [1, 10], skipping 0 and simply stopping
3692          * at 10 dB and looping instead of using a much larger table.
3693          *
3694          * Using 64 bit math is overkill, but means the helper does not require
3695          * a limit on the input range.
3696          */
3697         static const u32 db_to_val[] = {
3698                 0xcb59185e, 0xa1866ba8, 0x804dce7a, 0x65ea59fe, 0x50f44d89,
3699                 0x404de61f, 0x331426af, 0x2892c18b, 0x203a7e5b, 0x1999999a,
3700         };
3701
3702         while (value && db > 0) {
3703                 u8 change = min_t(u8, db, ARRAY_SIZE(db_to_val));
3704
3705                 value = (((u64)value) * db_to_val[change - 1]) >> 32;
3706
3707                 db -= change;
3708         }
3709
3710         return value;
3711 }
3712
3713 VISIBLE_IF_IWLWIFI_KUNIT s8
3714 iwl_mvm_average_dbm_values(const struct iwl_umac_scan_channel_survey_notif *notif)
3715 {
3716         s8 average_magnitude;
3717         u32 average_factor;
3718         s8 sum_magnitude = -128;
3719         u32 sum_factor = 0;
3720         int i, count = 0;
3721
3722         /*
3723          * To properly average the decibel values (signal values given in dBm)
3724          * we need to do the math in linear space.  Doing a linear average of
3725          * dB (dBm) values is a bit annoying though due to the large range of
3726          * at least -10 to -110 dBm that will not fit into a 32 bit integer.
3727          *
3728          * A 64 bit integer should be sufficient, but then we still have the
3729          * problem that there are no directly usable utility functions
3730          * available.
3731          *
3732          * So, lets not deal with that and instead do much of the calculation
3733          * with a 16.16 fixed point integer along with a base in dBm. 16.16 bit
3734          * gives us plenty of head-room for adding up a few values and even
3735          * doing some math on it. And the tail should be accurate enough too
3736          * (1/2^16 is somewhere around -48 dB, so effectively zero).
3737          *
3738          * i.e. the real value of sum is:
3739          *      sum = sum_factor / 2^16 * 10^(sum_magnitude / 10) mW
3740          *
3741          * However, that does mean we need to be able to bring two values to
3742          * a common base, so we need a helper for that.
3743          *
3744          * Note that this function takes an input with unsigned negative dBm
3745          * values but returns a signed dBm (i.e. a negative value).
3746          */
3747
3748         for (i = 0; i < ARRAY_SIZE(notif->noise); i++) {
3749                 s8 val_magnitude;
3750                 u32 val_factor;
3751
3752                 if (notif->noise[i] == 0xff)
3753                         continue;
3754
3755                 val_factor = 0x10000;
3756                 val_magnitude = -notif->noise[i];
3757
3758                 if (val_magnitude <= sum_magnitude) {
3759                         u8 div_db = sum_magnitude - val_magnitude;
3760
3761                         val_factor = iwl_mvm_div_by_db(val_factor, div_db);
3762                         val_magnitude = sum_magnitude;
3763                 } else {
3764                         u8 div_db = val_magnitude - sum_magnitude;
3765
3766                         sum_factor = iwl_mvm_div_by_db(sum_factor, div_db);
3767                         sum_magnitude = val_magnitude;
3768                 }
3769
3770                 sum_factor += val_factor;
3771                 count++;
3772         }
3773
3774         /* No valid noise measurement, return a very high noise level */
3775         if (count == 0)
3776                 return 0;
3777
3778         average_magnitude = sum_magnitude;
3779         average_factor = sum_factor / count;
3780
3781         /*
3782          * average_factor will be a number smaller than 1.0 (0x10000) at this
3783          * point. What we need to do now is to adjust average_magnitude so that
3784          * average_factor is between -0.5 dB and 0.5 dB.
3785          *
3786          * Just do -1 dB steps and find the point where
3787          *   -0.5 dB * -i dB = 0x10000 * 10^(-0.5/10) / i dB
3788          *                   = div_by_db(0xe429, i)
3789          * is smaller than average_factor.
3790          */
3791         for (i = 0; average_factor < iwl_mvm_div_by_db(0xe429, i); i++) {
3792                 /* nothing */
3793         }
3794
3795         return average_magnitude - i;
3796 }
3797 EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_average_dbm_values);
3798
3799 void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm,
3800                                      struct iwl_rx_cmd_buffer *rxb)
3801 {
3802         struct iwl_rx_packet *pkt = rxb_addr(rxb);
3803         const struct iwl_umac_scan_channel_survey_notif *notif =
3804                 (void *)pkt->data;
3805         struct iwl_mvm_acs_survey_channel *info;
3806         enum nl80211_band band;
3807         int chan_idx;
3808
3809         lockdep_assert_held(&mvm->mutex);
3810
3811         if (!mvm->acs_survey) {
3812                 size_t n_channels = 0;
3813
3814                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
3815                         if (!mvm->hw->wiphy->bands[band])
3816                                 continue;
3817
3818                         n_channels += mvm->hw->wiphy->bands[band]->n_channels;
3819                 }
3820
3821                 mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey,
3822                                                       channels, n_channels),
3823                                           GFP_KERNEL);
3824
3825                 if (!mvm->acs_survey)
3826                         return;
3827
3828                 mvm->acs_survey->n_channels = n_channels;
3829                 n_channels = 0;
3830                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
3831                         if (!mvm->hw->wiphy->bands[band])
3832                                 continue;
3833
3834                         mvm->acs_survey->bands[band] =
3835                                 &mvm->acs_survey->channels[n_channels];
3836                         n_channels += mvm->hw->wiphy->bands[band]->n_channels;
3837                 }
3838         }
3839
3840         band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band));
3841         chan_idx = iwl_mvm_chanidx_from_phy(mvm, band,
3842                                             le32_to_cpu(notif->channel));
3843         if (WARN_ON_ONCE(chan_idx < 0))
3844                 return;
3845
3846         IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n",
3847                        mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq);
3848
3849         info = &mvm->acs_survey->bands[band][chan_idx];
3850
3851         /* Times are all in ms */
3852         info->time = le32_to_cpu(notif->active_time);
3853         info->time_busy = le32_to_cpu(notif->busy_time);
3854         info->time_rx = le32_to_cpu(notif->rx_time);
3855         info->time_tx = le32_to_cpu(notif->tx_time);
3856         info->noise = iwl_mvm_average_dbm_values(notif);
3857 }