kernel/drivers/net/wireless/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
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  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/kernel.h>
  66 #include <linux/slab.h>
  67 #include <linux/skbuff.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/ip.h>
  71 #include <linux/if_arp.h>
  72 #include <linux/devcoredump.h>
  73 #include <net/mac80211.h>
  74 #include <net/ieee80211_radiotap.h>
  75 #include <net/tcp.h>
  76
  77 #include "iwl-op-mode.h"
  78 #include "iwl-io.h"
  79 #include "mvm.h"
  80 #include "sta.h"
  81 #include "time-event.h"
  82 #include "iwl-eeprom-parse.h"
  83 #include "fw-api-scan.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88 #include "iwl-csr.h"
  89 #include "iwl-nvm-parse.h"
  90
  91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_STATION),
  95         },
  96         {
  97                 .max = 1,
  98                 .types = BIT(NL80211_IFTYPE_AP) |
  99                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 100                         BIT(NL80211_IFTYPE_P2P_GO),
 101         },
 102         {
 103                 .max = 1,
 104                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 105         },
 106 };
 107
 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 109         {
 110                 .num_different_channels = 2,
 111                 .max_interfaces = 3,
 112                 .limits = iwl_mvm_limits,
 113                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 114         },
 115 };
 116
 117 #ifdef CONFIG_PM_SLEEP
 118 static const struct nl80211_wowlan_tcp_data_token_feature
 119 iwl_mvm_wowlan_tcp_token_feature = {
 120         .min_len = 0,
 121         .max_len = 255,
 122         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 123 };
 124
 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 126         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 127         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 128                             sizeof(struct ethhdr) -
 129                             sizeof(struct iphdr) -
 130                             sizeof(struct tcphdr),
 131         .data_interval_max = 65535, /* __le16 in API */
 132         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 133                             sizeof(struct ethhdr) -
 134                             sizeof(struct iphdr) -
 135                             sizeof(struct tcphdr),
 136         .seq = true,
 137 };
 138 #endif
 139
 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 141 /*
 142  * Use the reserved field to indicate magic values.
 143  * these values will only be used internally by the driver,
 144  * and won't make it to the fw (reserved will be 0).
 145  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 146  *      be the vif's ip address. in case there is not a single
 147  *      ip address (0, or more than 1), this attribute will
 148  *      be skipped.
 149  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 150  *      the LSB bytes of the vif's mac address
 151  */
 152 enum {
 153         BC_FILTER_MAGIC_NONE = 0,
 154         BC_FILTER_MAGIC_IP,
 155         BC_FILTER_MAGIC_MAC,
 156 };
 157
 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 159         {
 160                 /* arp */
 161                 .discard = 0,
 162                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 163                 .attrs = {
 164                         {
 165                                 /* frame type - arp, hw type - ethernet */
 166                                 .offset_type =
 167                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 168                                 .offset = sizeof(rfc1042_header),
 169                                 .val = cpu_to_be32(0x08060001),
 170                                 .mask = cpu_to_be32(0xffffffff),
 171                         },
 172                         {
 173                                 /* arp dest ip */
 174                                 .offset_type =
 175                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 176                                 .offset = sizeof(rfc1042_header) + 2 +
 177                                           sizeof(struct arphdr) +
 178                                           ETH_ALEN + sizeof(__be32) +
 179                                           ETH_ALEN,
 180                                 .mask = cpu_to_be32(0xffffffff),
 181                                 /* mark it as special field */
 182                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 183                         },
 184                 },
 185         },
 186         {
 187                 /* dhcp offer bcast */
 188                 .discard = 0,
 189                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 190                 .attrs = {
 191                         {
 192                                 /* udp dest port - 68 (bootp client)*/
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = offsetof(struct udphdr, dest),
 195                                 .val = cpu_to_be32(0x00440000),
 196                                 .mask = cpu_to_be32(0xffff0000),
 197                         },
 198                         {
 199                                 /* dhcp - lsb bytes of client hw address */
 200                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 201                                 .offset = 38,
 202                                 .mask = cpu_to_be32(0xffffffff),
 203                                 /* mark it as special field */
 204                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 205                         },
 206                 },
 207         },
 208         /* last filter must be empty */
 209         {},
 210 };
 211 #endif
 212
 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 214 {
 215         if (!iwl_mvm_is_d0i3_supported(mvm))
 216                 return;
 217
 218         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 219         spin_lock_bh(&mvm->refs_lock);
 220         mvm->refs[ref_type]++;
 221         spin_unlock_bh(&mvm->refs_lock);
 222         iwl_trans_ref(mvm->trans);
 223 }
 224
 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 226 {
 227         if (!iwl_mvm_is_d0i3_supported(mvm))
 228                 return;
 229
 230         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 231         spin_lock_bh(&mvm->refs_lock);
 232         WARN_ON(!mvm->refs[ref_type]--);
 233         spin_unlock_bh(&mvm->refs_lock);
 234         iwl_trans_unref(mvm->trans);
 235 }
 236
 237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 238                                      enum iwl_mvm_ref_type except_ref)
 239 {
 240         int i, j;
 241
 242         if (!iwl_mvm_is_d0i3_supported(mvm))
 243                 return;
 244
 245         spin_lock_bh(&mvm->refs_lock);
 246         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 247                 if (except_ref == i || !mvm->refs[i])
 248                         continue;
 249
 250                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 251                               i, mvm->refs[i]);
 252                 for (j = 0; j < mvm->refs[i]; j++)
 253                         iwl_trans_unref(mvm->trans);
 254                 mvm->refs[i] = 0;
 255         }
 256         spin_unlock_bh(&mvm->refs_lock);
 257 }
 258
 259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 260 {
 261         int i;
 262         bool taken = false;
 263
 264         if (!iwl_mvm_is_d0i3_supported(mvm))
 265                 return true;
 266
 267         spin_lock_bh(&mvm->refs_lock);
 268         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 269                 if (mvm->refs[i]) {
 270                         taken = true;
 271                         break;
 272                 }
 273         }
 274         spin_unlock_bh(&mvm->refs_lock);
 275
 276         return taken;
 277 }
 278
 279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 280 {
 281         iwl_mvm_ref(mvm, ref_type);
 282
 283         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 284                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 285                                 HZ)) {
 286                 WARN_ON_ONCE(1);
 287                 iwl_mvm_unref(mvm, ref_type);
 288                 return -EIO;
 289         }
 290
 291         return 0;
 292 }
 293
 294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 295 {
 296         int i;
 297
 298         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 299         for (i = 0; i < NUM_PHY_CTX; i++) {
 300                 mvm->phy_ctxts[i].id = i;
 301                 mvm->phy_ctxts[i].ref = 0;
 302         }
 303 }
 304
 305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 306                                                   const char *alpha2,
 307                                                   enum iwl_mcc_source src_id,
 308                                                   bool *changed)
 309 {
 310         struct ieee80211_regdomain *regd = NULL;
 311         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 313         struct iwl_mcc_update_resp *resp;
 314
 315         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 316
 317         lockdep_assert_held(&mvm->mutex);
 318
 319         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 320         if (IS_ERR_OR_NULL(resp)) {
 321                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 322                               PTR_RET(resp));
 323                 goto out;
 324         }
 325
 326         if (changed)
 327                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 328
 329         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 330                                       __le32_to_cpu(resp->n_channels),
 331                                       resp->channels,
 332                                       __le16_to_cpu(resp->mcc));
 333         /* Store the return source id */
 334         src_id = resp->source_id;
 335         kfree(resp);
 336         if (IS_ERR_OR_NULL(regd)) {
 337                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 338                               PTR_RET(regd));
 339                 goto out;
 340         }
 341
 342         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 343                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 344         mvm->lar_regdom_set = true;
 345         mvm->mcc_src = src_id;
 346
 347 out:
 348         return regd;
 349 }
 350
 351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 352 {
 353         bool changed;
 354         struct ieee80211_regdomain *regd;
 355
 356         if (!iwl_mvm_is_lar_supported(mvm))
 357                 return;
 358
 359         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 360         if (!IS_ERR_OR_NULL(regd)) {
 361                 /* only update the regulatory core if changed */
 362                 if (changed)
 363                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 364
 365                 kfree(regd);
 366         }
 367 }
 368
 369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 370                                                           bool *changed)
 371 {
 372         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 373                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 374                                      MCC_SOURCE_GET_CURRENT :
 375                                      MCC_SOURCE_OLD_FW, changed);
 376 }
 377
 378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 379 {
 380         enum iwl_mcc_source used_src;
 381         struct ieee80211_regdomain *regd;
 382         int ret;
 383         bool changed;
 384         const struct ieee80211_regdomain *r =
 385                         rtnl_dereference(mvm->hw->wiphy->regd);
 386
 387         if (!r)
 388                 return -ENOENT;
 389
 390         /* save the last source in case we overwrite it below */
 391         used_src = mvm->mcc_src;
 392         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 393                 /* Notify the firmware we support wifi location updates */
 394                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 395                 if (!IS_ERR_OR_NULL(regd))
 396                         kfree(regd);
 397         }
 398
 399         /* Now set our last stored MCC and source */
 400         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 401                                      &changed);
 402         if (IS_ERR_OR_NULL(regd))
 403                 return -EIO;
 404
 405         /* update cfg80211 if the regdomain was changed */
 406         if (changed)
 407                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 408         else
 409                 ret = 0;
 410
 411         kfree(regd);
 412         return ret;
 413 }
 414
 415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 416 {
 417         struct ieee80211_hw *hw = mvm->hw;
 418         int num_mac, ret, i;
 419
 420         /* Tell mac80211 our characteristics */
 421         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 422                     IEEE80211_HW_SPECTRUM_MGMT |
 423                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 424                     IEEE80211_HW_QUEUE_CONTROL |
 425                     IEEE80211_HW_WANT_MONITOR_VIF |
 426                     IEEE80211_HW_SUPPORTS_PS |
 427                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 428                     IEEE80211_HW_AMPDU_AGGREGATION |
 429                     IEEE80211_HW_TIMING_BEACON_ONLY |
 430                     IEEE80211_HW_CONNECTION_MONITOR |
 431                     IEEE80211_HW_CHANCTX_STA_CSA |
 432                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 433
 434         hw->queues = mvm->first_agg_queue;
 435         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 436         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 437                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 438         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 439                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 440         hw->rate_control_algorithm = "iwl-mvm-rs";
 441         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 442         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 443
 444         /*
 445          * Enable 11w if advertised by firmware and software crypto
 446          * is not enabled (as the firmware will interpret some mgmt
 447          * packets, so enabling it with software crypto isn't safe)
 448          */
 449         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 450             !iwlwifi_mod_params.sw_crypto)
 451                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 452
 453         hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 454         hw->wiphy->features |=
 455                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 456                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 457
 458         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 459         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 460         hw->chanctx_data_size = sizeof(u16);
 461
 462         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 463                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 464                 BIT(NL80211_IFTYPE_AP) |
 465                 BIT(NL80211_IFTYPE_P2P_GO) |
 466                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 467                 BIT(NL80211_IFTYPE_ADHOC);
 468
 469         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 470         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 471         if (iwl_mvm_is_lar_supported(mvm))
 472                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 473         else
 474                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 475                                                REGULATORY_DISABLE_BEACON_HINTS;
 476
 477         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 478                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 479
 480         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 481
 482         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 483         hw->wiphy->n_iface_combinations =
 484                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 485
 486         hw->wiphy->max_remain_on_channel_duration = 10000;
 487         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 488         /* we can compensate an offset of up to 3 channels = 15 MHz */
 489         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 490
 491         /* Extract MAC address */
 492         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 493         hw->wiphy->addresses = mvm->addresses;
 494         hw->wiphy->n_addresses = 1;
 495
 496         /* Extract additional MAC addresses if available */
 497         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 498                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 499
 500         for (i = 1; i < num_mac; i++) {
 501                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 502                        ETH_ALEN);
 503                 mvm->addresses[i].addr[5]++;
 504                 hw->wiphy->n_addresses++;
 505         }
 506
 507         iwl_mvm_reset_phy_ctxts(mvm);
 508
 509         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 510
 511         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 512
 513         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 514                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 515                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 516         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 517                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 518                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 519
 520                 if ((mvm->fw->ucode_capa.capa[0] &
 521                      IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 522                     (mvm->fw->ucode_capa.api[0] &
 523                      IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 524                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 525                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 526         }
 527
 528         hw->wiphy->hw_version = mvm->trans->hw_id;
 529
 530         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 531                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 532         else
 533                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 534
 535         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 536                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 537                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 538                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 539                 /* we create the 802.11 header and zero length SSID IE. */
 540                 hw->wiphy->max_sched_scan_ie_len =
 541                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 542         }
 543
 544         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 545                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 546                                NL80211_FEATURE_P2P_GO_OPPPS |
 547                                NL80211_FEATURE_DYNAMIC_SMPS |
 548                                NL80211_FEATURE_STATIC_SMPS |
 549                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 550
 551         if (mvm->fw->ucode_capa.capa[0] &
 552             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 553                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 554         if (mvm->fw->ucode_capa.capa[0] &
 555             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 556                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 557
 558         if (mvm->fw->ucode_capa.capa[0] &
 559             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 560                 hw->wiphy->features |=
 561                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 562
 563         if (mvm->fw->ucode_capa.capa[0] &
 564             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 565                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 566
 567         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 568
 569         /* currently FW API supports only one optional cipher scheme */
 570         if (mvm->fw->cs[0].cipher) {
 571                 mvm->hw->n_cipher_schemes = 1;
 572                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 573         }
 574
 575 #ifdef CONFIG_PM_SLEEP
 576         if (iwl_mvm_is_d0i3_supported(mvm) &&
 577             device_can_wakeup(mvm->trans->dev)) {
 578                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 579                 hw->wiphy->wowlan = &mvm->wowlan;
 580         }
 581
 582         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 583             mvm->trans->ops->d3_suspend &&
 584             mvm->trans->ops->d3_resume &&
 585             device_can_wakeup(mvm->trans->dev)) {
 586                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 587                                      WIPHY_WOWLAN_DISCONNECT |
 588                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 589                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 590                                      WIPHY_WOWLAN_NET_DETECT;
 591                 if (!iwlwifi_mod_params.sw_crypto)
 592                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 593                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 594                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 595
 596                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 597                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 598                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 599                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 600                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 601                 hw->wiphy->wowlan = &mvm->wowlan;
 602         }
 603 #endif
 604
 605 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 606         /* assign default bcast filtering configuration */
 607         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 608 #endif
 609
 610         ret = iwl_mvm_leds_init(mvm);
 611         if (ret)
 612                 return ret;
 613
 614         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 615                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 616                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 617         }
 618
 619         if (mvm->fw->ucode_capa.capa[0] &
 620             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 621                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 622                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 623         }
 624
 625         ret = ieee80211_register_hw(mvm->hw);
 626         if (ret)
 627                 iwl_mvm_leds_exit(mvm);
 628
 629         return ret;
 630 }
 631
 632 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 633                              struct ieee80211_sta *sta,
 634                              struct sk_buff *skb)
 635 {
 636         struct iwl_mvm_sta *mvmsta;
 637         bool defer = false;
 638
 639         /*
 640          * double check the IN_D0I3 flag both before and after
 641          * taking the spinlock, in order to prevent taking
 642          * the spinlock when not needed.
 643          */
 644         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 645                 return false;
 646
 647         spin_lock(&mvm->d0i3_tx_lock);
 648         /*
 649          * testing the flag again ensures the skb dequeue
 650          * loop (on d0i3 exit) hasn't run yet.
 651          */
 652         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 653                 goto out;
 654
 655         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 656         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 657             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 658                 goto out;
 659
 660         __skb_queue_tail(&mvm->d0i3_tx, skb);
 661         ieee80211_stop_queues(mvm->hw);
 662
 663         /* trigger wakeup */
 664         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 665         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 666
 667         defer = true;
 668 out:
 669         spin_unlock(&mvm->d0i3_tx_lock);
 670         return defer;
 671 }
 672
 673 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 674                            struct ieee80211_tx_control *control,
 675                            struct sk_buff *skb)
 676 {
 677         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 678         struct ieee80211_sta *sta = control->sta;
 679         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 680         struct ieee80211_hdr *hdr = (void *)skb->data;
 681
 682         if (iwl_mvm_is_radio_killed(mvm)) {
 683                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 684                 goto drop;
 685         }
 686
 687         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 688             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 689             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 690                 goto drop;
 691
 692         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 693         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 694                      ieee80211_is_mgmt(hdr->frame_control) &&
 695                      !ieee80211_is_deauth(hdr->frame_control) &&
 696                      !ieee80211_is_disassoc(hdr->frame_control) &&
 697                      !ieee80211_is_action(hdr->frame_control)))
 698                 sta = NULL;
 699
 700         if (sta) {
 701                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 702                         return;
 703                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 704                         goto drop;
 705                 return;
 706         }
 707
 708         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 709                 goto drop;
 710         return;
 711  drop:
 712         ieee80211_free_txskb(hw, skb);
 713 }
 714
 715 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 716 {
 717         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 718                 return false;
 719         return true;
 720 }
 721
 722 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 723 {
 724         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 725                 return false;
 726         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 727                 return true;
 728
 729         /* enabled by default */
 730         return true;
 731 }
 732
 733 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 734                                     struct ieee80211_vif *vif,
 735                                     enum ieee80211_ampdu_mlme_action action,
 736                                     struct ieee80211_sta *sta, u16 tid,
 737                                     u16 *ssn, u8 buf_size)
 738 {
 739         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 740         int ret;
 741         bool tx_agg_ref = false;
 742
 743         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 744                      sta->addr, tid, action);
 745
 746         if (!(mvm->nvm_data->sku_cap_11n_enable))
 747                 return -EACCES;
 748
 749         /* return from D0i3 before starting a new Tx aggregation */
 750         switch (action) {
 751         case IEEE80211_AMPDU_TX_START:
 752         case IEEE80211_AMPDU_TX_STOP_CONT:
 753         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 754         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 755         case IEEE80211_AMPDU_TX_OPERATIONAL:
 756                 /*
 757                  * for tx start, wait synchronously until D0i3 exit to
 758                  * get the correct sequence number for the tid.
 759                  * additionally, some other ampdu actions use direct
 760                  * target access, which is not handled automatically
 761                  * by the trans layer (unlike commands), so wait for
 762                  * d0i3 exit in these cases as well.
 763                  */
 764                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 765                 if (ret)
 766                         return ret;
 767
 768                 tx_agg_ref = true;
 769                 break;
 770         default:
 771                 break;
 772         }
 773
 774         mutex_lock(&mvm->mutex);
 775
 776         switch (action) {
 777         case IEEE80211_AMPDU_RX_START:
 778                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 779                         ret = -EINVAL;
 780                         break;
 781                 }
 782                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 783                 break;
 784         case IEEE80211_AMPDU_RX_STOP:
 785                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 786                 break;
 787         case IEEE80211_AMPDU_TX_START:
 788                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 789                         ret = -EINVAL;
 790                         break;
 791                 }
 792                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 793                 break;
 794         case IEEE80211_AMPDU_TX_STOP_CONT:
 795                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 796                 break;
 797         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 798         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 799                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 800                 break;
 801         case IEEE80211_AMPDU_TX_OPERATIONAL:
 802                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 803                 break;
 804         default:
 805                 WARN_ON_ONCE(1);
 806                 ret = -EINVAL;
 807                 break;
 808         }
 809         mutex_unlock(&mvm->mutex);
 810
 811         /*
 812          * If the tid is marked as started, we won't use it for offloaded
 813          * traffic on the next D0i3 entry. It's safe to unref.
 814          */
 815         if (tx_agg_ref)
 816                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 817
 818         return ret;
 819 }
 820
 821 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 822                                      struct ieee80211_vif *vif)
 823 {
 824         struct iwl_mvm *mvm = data;
 825         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 826
 827         mvmvif->uploaded = false;
 828         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 829
 830         spin_lock_bh(&mvm->time_event_lock);
 831         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 832         spin_unlock_bh(&mvm->time_event_lock);
 833
 834         mvmvif->phy_ctxt = NULL;
 835         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 836 }
 837
 838 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 839                                      const void *data, size_t datalen)
 840 {
 841         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 842         ssize_t bytes_read;
 843         ssize_t bytes_read_trans;
 844
 845         if (offset < dump_ptrs->op_mode_len) {
 846                 bytes_read = min_t(ssize_t, count,
 847                                    dump_ptrs->op_mode_len - offset);
 848                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 849                        bytes_read);
 850                 offset += bytes_read;
 851                 count -= bytes_read;
 852
 853                 if (count == 0)
 854                         return bytes_read;
 855         } else {
 856                 bytes_read = 0;
 857         }
 858
 859         if (!dump_ptrs->trans_ptr)
 860                 return bytes_read;
 861
 862         offset -= dump_ptrs->op_mode_len;
 863         bytes_read_trans = min_t(ssize_t, count,
 864                                  dump_ptrs->trans_ptr->len - offset);
 865         memcpy(buffer + bytes_read,
 866                (u8 *)dump_ptrs->trans_ptr->data + offset,
 867                bytes_read_trans);
 868
 869         return bytes_read + bytes_read_trans;
 870 }
 871
 872 static void iwl_mvm_free_coredump(const void *data)
 873 {
 874         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 875
 876         vfree(fw_error_dump->op_mode_ptr);
 877         vfree(fw_error_dump->trans_ptr);
 878         kfree(fw_error_dump);
 879 }
 880
 881 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
 882                                struct iwl_fw_error_dump_data **dump_data)
 883 {
 884         struct iwl_fw_error_dump_fifo *fifo_hdr;
 885         u32 *fifo_data;
 886         u32 fifo_len;
 887         unsigned long flags;
 888         int i, j;
 889
 890         if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
 891                 return;
 892
 893         /* Pull RXF data from all RXFs */
 894         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
 895                 /*
 896                  * Keep aside the additional offset that might be needed for
 897                  * next RXF
 898                  */
 899                 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
 900
 901                 fifo_hdr = (void *)(*dump_data)->data;
 902                 fifo_data = (void *)fifo_hdr->data;
 903                 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
 904
 905                 /* No need to try to read the data if the length is 0 */
 906                 if (fifo_len == 0)
 907                         continue;
 908
 909                 /* Add a TLV for the RXF */
 910                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 911                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 912
 913                 fifo_hdr->fifo_num = cpu_to_le32(i);
 914                 fifo_hdr->available_bytes =
 915                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 916                                                         RXF_RD_D_SPACE +
 917                                                         offset_diff));
 918                 fifo_hdr->wr_ptr =
 919                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 920                                                         RXF_RD_WR_PTR +
 921                                                         offset_diff));
 922                 fifo_hdr->rd_ptr =
 923                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 924                                                         RXF_RD_RD_PTR +
 925                                                         offset_diff));
 926                 fifo_hdr->fence_ptr =
 927                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 928                                                         RXF_RD_FENCE_PTR +
 929                                                         offset_diff));
 930                 fifo_hdr->fence_mode =
 931                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 932                                                         RXF_SET_FENCE_MODE +
 933                                                         offset_diff));
 934
 935                 /* Lock fence */
 936                 iwl_trans_write_prph(mvm->trans,
 937                                      RXF_SET_FENCE_MODE + offset_diff, 0x1);
 938                 /* Set fence pointer to the same place like WR pointer */
 939                 iwl_trans_write_prph(mvm->trans,
 940                                      RXF_LD_WR2FENCE + offset_diff, 0x1);
 941                 /* Set fence offset */
 942                 iwl_trans_write_prph(mvm->trans,
 943                                      RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
 944                                      0x0);
 945
 946                 /* Read FIFO */
 947                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 948                 for (j = 0; j < fifo_len; j++)
 949                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 950                                                          RXF_FIFO_RD_FENCE_INC +
 951                                                          offset_diff);
 952                 *dump_data = iwl_fw_error_next_data(*dump_data);
 953         }
 954
 955         /* Pull TXF data from all TXFs */
 956         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
 957                 /* Mark the number of TXF we're pulling now */
 958                 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
 959
 960                 fifo_hdr = (void *)(*dump_data)->data;
 961                 fifo_data = (void *)fifo_hdr->data;
 962                 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
 963
 964                 /* No need to try to read the data if the length is 0 */
 965                 if (fifo_len == 0)
 966                         continue;
 967
 968                 /* Add a TLV for the FIFO */
 969                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
 970                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 971
 972                 fifo_hdr->fifo_num = cpu_to_le32(i);
 973                 fifo_hdr->available_bytes =
 974                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 975                                                         TXF_FIFO_ITEM_CNT));
 976                 fifo_hdr->wr_ptr =
 977                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 978                                                         TXF_WR_PTR));
 979                 fifo_hdr->rd_ptr =
 980                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 981                                                         TXF_RD_PTR));
 982                 fifo_hdr->fence_ptr =
 983                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 984                                                         TXF_FENCE_PTR));
 985                 fifo_hdr->fence_mode =
 986                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 987                                                         TXF_LOCK_FENCE));
 988
 989                 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
 990                 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
 991                                      TXF_WR_PTR);
 992
 993                 /* Dummy-read to advance the read pointer to the head */
 994                 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
 995
 996                 /* Read FIFO */
 997                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 998                 for (j = 0; j < fifo_len; j++)
 999                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1000                                                           TXF_READ_MODIFY_DATA);
1001                 *dump_data = iwl_fw_error_next_data(*dump_data);
1002         }
1003
1004         iwl_trans_release_nic_access(mvm->trans, &flags);
1005 }
1006
1007 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1008 {
1009         if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1010             !mvm->fw_dump_desc)
1011                 return;
1012
1013         kfree(mvm->fw_dump_desc);
1014         mvm->fw_dump_desc = NULL;
1015 }
1016
1017 #define IWL8260_ICCM_OFFSET             0x44000 /* Only for B-step */
1018 #define IWL8260_ICCM_LEN                0xC000 /* Only for B-step */
1019
1020 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1021 {
1022         struct iwl_fw_error_dump_file *dump_file;
1023         struct iwl_fw_error_dump_data *dump_data;
1024         struct iwl_fw_error_dump_info *dump_info;
1025         struct iwl_fw_error_dump_mem *dump_mem;
1026         struct iwl_fw_error_dump_trigger_desc *dump_trig;
1027         struct iwl_mvm_dump_ptrs *fw_error_dump;
1028         u32 sram_len, sram_ofs;
1029         u32 file_len, fifo_data_len = 0;
1030         u32 smem_len = mvm->cfg->smem_len;
1031         u32 sram2_len = mvm->cfg->dccm2_len;
1032
1033         lockdep_assert_held(&mvm->mutex);
1034
1035         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1036         if (!fw_error_dump)
1037                 return;
1038
1039         /* SRAM - include stack CCM if driver knows the values for it */
1040         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1041                 const struct fw_img *img;
1042
1043                 img = &mvm->fw->img[mvm->cur_ucode];
1044                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1045                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1046         } else {
1047                 sram_ofs = mvm->cfg->dccm_offset;
1048                 sram_len = mvm->cfg->dccm_len;
1049         }
1050
1051         /* reading RXF/TXF sizes */
1052         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1053                 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1054                 int i;
1055
1056                 fifo_data_len = 0;
1057
1058                 /* Count RXF size */
1059                 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1060                         if (!mem_cfg->rxfifo_size[i])
1061                                 continue;
1062
1063                         /* Add header info */
1064                         fifo_data_len += mem_cfg->rxfifo_size[i] +
1065                                          sizeof(*dump_data) +
1066                                          sizeof(struct iwl_fw_error_dump_fifo);
1067                 }
1068
1069                 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1070                         if (!mem_cfg->txfifo_size[i])
1071                                 continue;
1072
1073                         /* Add header info */
1074                         fifo_data_len += mem_cfg->txfifo_size[i] +
1075                                          sizeof(*dump_data) +
1076                                          sizeof(struct iwl_fw_error_dump_fifo);
1077                 }
1078         }
1079
1080         file_len = sizeof(*dump_file) +
1081                    sizeof(*dump_data) * 2 +
1082                    sram_len + sizeof(*dump_mem) +
1083                    fifo_data_len +
1084                    sizeof(*dump_info);
1085
1086         /*
1087          * In 8000 HW family B-step include the ICCM (which resides separately)
1088          */
1089         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1090             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1091                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1092                             IWL8260_ICCM_LEN;
1093
1094         if (mvm->fw_dump_desc)
1095                 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1096                             mvm->fw_dump_desc->len;
1097
1098         /* Make room for the SMEM, if it exists */
1099         if (smem_len)
1100                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1101
1102         /* Make room for the secondary SRAM, if it exists */
1103         if (sram2_len)
1104                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1105
1106         dump_file = vzalloc(file_len);
1107         if (!dump_file) {
1108                 kfree(fw_error_dump);
1109                 iwl_mvm_free_fw_dump_desc(mvm);
1110                 return;
1111         }
1112
1113         fw_error_dump->op_mode_ptr = dump_file;
1114
1115         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1116         dump_data = (void *)dump_file->data;
1117
1118         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1119         dump_data->len = cpu_to_le32(sizeof(*dump_info));
1120         dump_info = (void *) dump_data->data;
1121         dump_info->device_family =
1122                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1123                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1124                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1125         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1126         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1127                sizeof(dump_info->fw_human_readable));
1128         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1129                 sizeof(dump_info->dev_human_readable));
1130         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1131                 sizeof(dump_info->bus_human_readable));
1132
1133         dump_data = iwl_fw_error_next_data(dump_data);
1134         /* We only dump the FIFOs if the FW is in error state */
1135         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1136                 iwl_mvm_dump_fifos(mvm, &dump_data);
1137
1138         if (mvm->fw_dump_desc) {
1139                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1140                 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1141                                              mvm->fw_dump_desc->len);
1142                 dump_trig = (void *)dump_data->data;
1143                 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1144                        sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1145
1146                 /* now we can free this copy */
1147                 iwl_mvm_free_fw_dump_desc(mvm);
1148                 dump_data = iwl_fw_error_next_data(dump_data);
1149         }
1150
1151         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1152         dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1153         dump_mem = (void *)dump_data->data;
1154         dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1155         dump_mem->offset = cpu_to_le32(sram_ofs);
1156         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1157                                  sram_len);
1158
1159         if (smem_len) {
1160                 dump_data = iwl_fw_error_next_data(dump_data);
1161                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1162                 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1163                 dump_mem = (void *)dump_data->data;
1164                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1165                 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1166                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1167                                          dump_mem->data, smem_len);
1168         }
1169
1170         if (sram2_len) {
1171                 dump_data = iwl_fw_error_next_data(dump_data);
1172                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1173                 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1174                 dump_mem = (void *)dump_data->data;
1175                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1176                 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1177                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1178                                          dump_mem->data, sram2_len);
1179         }
1180
1181         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1182             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1183                 dump_data = iwl_fw_error_next_data(dump_data);
1184                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1185                 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1186                                              sizeof(*dump_mem));
1187                 dump_mem = (void *)dump_data->data;
1188                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1189                 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1190                 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1191                                          dump_mem->data, IWL8260_ICCM_LEN);
1192         }
1193
1194         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1195         fw_error_dump->op_mode_len = file_len;
1196         if (fw_error_dump->trans_ptr)
1197                 file_len += fw_error_dump->trans_ptr->len;
1198         dump_file->file_len = cpu_to_le32(file_len);
1199
1200         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1201                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1202
1203         clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1204 }
1205
1206 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1207         .trig_desc = {
1208                 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1209         },
1210 };
1211
1212 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1213 {
1214         /* clear the D3 reconfig, we only need it to avoid dumping a
1215          * firmware coredump on reconfiguration, we shouldn't do that
1216          * on D3->D0 transition
1217          */
1218         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1219                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1220                 iwl_mvm_fw_error_dump(mvm);
1221         }
1222
1223         /* cleanup all stale references (scan, roc), but keep the
1224          * ucode_down ref until reconfig is complete
1225          */
1226         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1227
1228         iwl_trans_stop_device(mvm->trans);
1229
1230         mvm->scan_status = IWL_MVM_SCAN_NONE;
1231         mvm->ps_disabled = false;
1232         mvm->calibrating = false;
1233
1234         /* just in case one was running */
1235         ieee80211_remain_on_channel_expired(mvm->hw);
1236
1237         ieee80211_iterate_active_interfaces_atomic(
1238                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1239                 iwl_mvm_cleanup_iterator, mvm);
1240
1241         mvm->p2p_device_vif = NULL;
1242         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1243
1244         iwl_mvm_reset_phy_ctxts(mvm);
1245         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1246         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1247         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1248         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1249         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1250         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1251         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1252         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1253         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1254
1255         ieee80211_wake_queues(mvm->hw);
1256
1257         /* clear any stale d0i3 state */
1258         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1259
1260         mvm->vif_count = 0;
1261         mvm->rx_ba_sessions = 0;
1262         mvm->fw_dbg_conf = FW_DBG_INVALID;
1263
1264         /* keep statistics ticking */
1265         iwl_mvm_accu_radio_stats(mvm);
1266 }
1267
1268 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1269 {
1270         int ret;
1271
1272         lockdep_assert_held(&mvm->mutex);
1273
1274         /* Clean up some internal and mac80211 state on restart */
1275         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1276                 iwl_mvm_restart_cleanup(mvm);
1277
1278         ret = iwl_mvm_up(mvm);
1279
1280         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1281                 /* Something went wrong - we need to finish some cleanup
1282                  * that normally iwl_mvm_mac_restart_complete() below
1283                  * would do.
1284                  */
1285                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1286                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1287         }
1288
1289         return ret;
1290 }
1291
1292 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1293 {
1294         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1295         int ret;
1296
1297         /* Some hw restart cleanups must not hold the mutex */
1298         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1299                 /*
1300                  * Make sure we are out of d0i3. This is needed
1301                  * to make sure the reference accounting is correct
1302                  * (and there is no stale d0i3_exit_work).
1303                  */
1304                 wait_event_timeout(mvm->d0i3_exit_waitq,
1305                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1306                                              &mvm->status),
1307                                    HZ);
1308         }
1309
1310         mutex_lock(&mvm->mutex);
1311         ret = __iwl_mvm_mac_start(mvm);
1312         mutex_unlock(&mvm->mutex);
1313
1314         return ret;
1315 }
1316
1317 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1318 {
1319         int ret;
1320
1321         mutex_lock(&mvm->mutex);
1322
1323         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1324         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1325         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1326         if (ret)
1327                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1328                         ret);
1329
1330         /* allow transport/FW low power modes */
1331         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1332
1333         /*
1334          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1335          * of packets the FW sent out, so we must reconnect.
1336          */
1337         iwl_mvm_teardown_tdls_peers(mvm);
1338
1339         mutex_unlock(&mvm->mutex);
1340 }
1341
1342 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1343 {
1344         bool exit_now;
1345
1346         if (!iwl_mvm_is_d0i3_supported(mvm))
1347                 return;
1348
1349         mutex_lock(&mvm->d0i3_suspend_mutex);
1350         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1351         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1352                                         &mvm->d0i3_suspend_flags);
1353         mutex_unlock(&mvm->d0i3_suspend_mutex);
1354
1355         if (exit_now) {
1356                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1357                 _iwl_mvm_exit_d0i3(mvm);
1358         }
1359
1360         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1361                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1362                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1363                                                   &mvm->status),
1364                                         HZ))
1365                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1366 }
1367
1368 static void
1369 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1370                               enum ieee80211_reconfig_type reconfig_type)
1371 {
1372         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1373
1374         switch (reconfig_type) {
1375         case IEEE80211_RECONFIG_TYPE_RESTART:
1376                 iwl_mvm_restart_complete(mvm);
1377                 break;
1378         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1379                 iwl_mvm_resume_complete(mvm);
1380                 break;
1381         }
1382 }
1383
1384 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1385 {
1386         lockdep_assert_held(&mvm->mutex);
1387
1388         /* firmware counters are obviously reset now, but we shouldn't
1389          * partially track so also clear the fw_reset_accu counters.
1390          */
1391         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1392
1393         /*
1394          * Disallow low power states when the FW is down by taking
1395          * the UCODE_DOWN ref. in case of ongoing hw restart the
1396          * ref is already taken, so don't take it again.
1397          */
1398         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1399                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1400
1401         /* async_handlers_wk is now blocked */
1402
1403         /*
1404          * The work item could be running or queued if the
1405          * ROC time event stops just as we get here.
1406          */
1407         flush_work(&mvm->roc_done_wk);
1408
1409         iwl_trans_stop_device(mvm->trans);
1410
1411         iwl_mvm_async_handlers_purge(mvm);
1412         /* async_handlers_list is empty and will stay empty: HW is stopped */
1413
1414         /* the fw is stopped, the aux sta is dead: clean up driver state */
1415         iwl_mvm_del_aux_sta(mvm);
1416
1417         /*
1418          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1419          * won't be called in this case).
1420          */
1421         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1422
1423         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1424          * make sure there's nothing left there and warn if any is found.
1425          */
1426         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1427                 int i;
1428
1429                 for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) {
1430                         if (WARN_ONCE(mvm->scan_uid[i],
1431                                       "UMAC scan UID %d was not cleaned\n",
1432                                       mvm->scan_uid[i]))
1433                                 mvm->scan_uid[i] = 0;
1434                 }
1435         }
1436
1437         mvm->ucode_loaded = false;
1438 }
1439
1440 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1441 {
1442         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1443
1444         flush_work(&mvm->d0i3_exit_work);
1445         flush_work(&mvm->async_handlers_wk);
1446         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1447         iwl_mvm_free_fw_dump_desc(mvm);
1448
1449         mutex_lock(&mvm->mutex);
1450         __iwl_mvm_mac_stop(mvm);
1451         mutex_unlock(&mvm->mutex);
1452
1453         /*
1454          * The worker might have been waiting for the mutex, let it run and
1455          * discover that its list is now empty.
1456          */
1457         cancel_work_sync(&mvm->async_handlers_wk);
1458 }
1459
1460 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1461 {
1462         u16 i;
1463
1464         lockdep_assert_held(&mvm->mutex);
1465
1466         for (i = 0; i < NUM_PHY_CTX; i++)
1467                 if (!mvm->phy_ctxts[i].ref)
1468                         return &mvm->phy_ctxts[i];
1469
1470         IWL_ERR(mvm, "No available PHY context\n");
1471         return NULL;
1472 }
1473
1474 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1475                                     struct ieee80211_vif *vif, s8 tx_power)
1476 {
1477         /* FW is in charge of regulatory enforcement */
1478         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1479                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1480                 .pwr_restriction = cpu_to_le16(tx_power),
1481         };
1482
1483         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1484                                     sizeof(reduce_txpwr_cmd),
1485                                     &reduce_txpwr_cmd);
1486 }
1487
1488 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1489                                 s16 tx_power)
1490 {
1491         struct iwl_dev_tx_power_cmd cmd = {
1492                 .set_mode = 0,
1493                 .mac_context_id =
1494                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1495                 .pwr_restriction = cpu_to_le16(8 * tx_power),
1496         };
1497
1498         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_TX_POWER_DEV))
1499                 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1500
1501         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1502                 cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1503
1504         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1505                                     sizeof(cmd), &cmd);
1506 }
1507
1508 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1509                                      struct ieee80211_vif *vif)
1510 {
1511         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1512         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1513         int ret;
1514
1515         mvmvif->mvm = mvm;
1516
1517         /*
1518          * make sure D0i3 exit is completed, otherwise a target access
1519          * during tx queue configuration could be done when still in
1520          * D0i3 state.
1521          */
1522         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1523         if (ret)
1524                 return ret;
1525
1526         /*
1527          * Not much to do here. The stack will not allow interface
1528          * types or combinations that we didn't advertise, so we
1529          * don't really have to check the types.
1530          */
1531
1532         mutex_lock(&mvm->mutex);
1533
1534         /* make sure that beacon statistics don't go backwards with FW reset */
1535         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1536                 mvmvif->beacon_stats.accu_num_beacons +=
1537                         mvmvif->beacon_stats.num_beacons;
1538
1539         /* Allocate resources for the MAC context, and add it to the fw  */
1540         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1541         if (ret)
1542                 goto out_unlock;
1543
1544         /* Counting number of interfaces is needed for legacy PM */
1545         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1546                 mvm->vif_count++;
1547
1548         /*
1549          * The AP binding flow can be done only after the beacon
1550          * template is configured (which happens only in the mac80211
1551          * start_ap() flow), and adding the broadcast station can happen
1552          * only after the binding.
1553          * In addition, since modifying the MAC before adding a bcast
1554          * station is not allowed by the FW, delay the adding of MAC context to
1555          * the point where we can also add the bcast station.
1556          * In short: there's not much we can do at this point, other than
1557          * allocating resources :)
1558          */
1559         if (vif->type == NL80211_IFTYPE_AP ||
1560             vif->type == NL80211_IFTYPE_ADHOC) {
1561                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1562                 if (ret) {
1563                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1564                         goto out_release;
1565                 }
1566
1567                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1568                 goto out_unlock;
1569         }
1570
1571         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1572         if (ret)
1573                 goto out_release;
1574
1575         ret = iwl_mvm_power_update_mac(mvm);
1576         if (ret)
1577                 goto out_remove_mac;
1578
1579         /* beacon filtering */
1580         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1581         if (ret)
1582                 goto out_remove_mac;
1583
1584         if (!mvm->bf_allowed_vif &&
1585             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1586                 mvm->bf_allowed_vif = mvmvif;
1587                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1588                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1589         }
1590
1591         /*
1592          * P2P_DEVICE interface does not have a channel context assigned to it,
1593          * so a dedicated PHY context is allocated to it and the corresponding
1594          * MAC context is bound to it at this stage.
1595          */
1596         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1597
1598                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1599                 if (!mvmvif->phy_ctxt) {
1600                         ret = -ENOSPC;
1601                         goto out_free_bf;
1602                 }
1603
1604                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1605                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1606                 if (ret)
1607                         goto out_unref_phy;
1608
1609                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1610                 if (ret)
1611                         goto out_unbind;
1612
1613                 /* Save a pointer to p2p device vif, so it can later be used to
1614                  * update the p2p device MAC when a GO is started/stopped */
1615                 mvm->p2p_device_vif = vif;
1616         }
1617
1618         iwl_mvm_vif_dbgfs_register(mvm, vif);
1619         goto out_unlock;
1620
1621  out_unbind:
1622         iwl_mvm_binding_remove_vif(mvm, vif);
1623  out_unref_phy:
1624         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1625  out_free_bf:
1626         if (mvm->bf_allowed_vif == mvmvif) {
1627                 mvm->bf_allowed_vif = NULL;
1628                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1629                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1630         }
1631  out_remove_mac:
1632         mvmvif->phy_ctxt = NULL;
1633         iwl_mvm_mac_ctxt_remove(mvm, vif);
1634  out_release:
1635         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1636                 mvm->vif_count--;
1637
1638         iwl_mvm_mac_ctxt_release(mvm, vif);
1639  out_unlock:
1640         mutex_unlock(&mvm->mutex);
1641
1642         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1643
1644         return ret;
1645 }
1646
1647 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1648                                         struct ieee80211_vif *vif)
1649 {
1650         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1651
1652         if (tfd_msk) {
1653                 /*
1654                  * mac80211 first removes all the stations of the vif and
1655                  * then removes the vif. When it removes a station it also
1656                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1657                  * of all the stations of this vif are closed, and the queues
1658                  * of these AMPDU sessions are properly closed.
1659                  * We still need to take care of the shared queues of the vif.
1660                  * Flush them here.
1661                  */
1662                 mutex_lock(&mvm->mutex);
1663                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1664                 mutex_unlock(&mvm->mutex);
1665
1666                 /*
1667                  * There are transports that buffer a few frames in the host.
1668                  * For these, the flush above isn't enough since while we were
1669                  * flushing, the transport might have sent more frames to the
1670                  * device. To solve this, wait here until the transport is
1671                  * empty. Technically, this could have replaced the flush
1672                  * above, but flush is much faster than draining. So flush
1673                  * first, and drain to make sure we have no frames in the
1674                  * transport anymore.
1675                  * If a station still had frames on the shared queues, it is
1676                  * already marked as draining, so to complete the draining, we
1677                  * just need to wait until the transport is empty.
1678                  */
1679                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1680         }
1681
1682         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1683                 /*
1684                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1685                  * We assume here that all the packets sent to the OFFCHANNEL
1686                  * queue are sent in ROC session.
1687                  */
1688                 flush_work(&mvm->roc_done_wk);
1689         } else {
1690                 /*
1691                  * By now, all the AC queues are empty. The AGG queues are
1692                  * empty too. We already got all the Tx responses for all the
1693                  * packets in the queues. The drain work can have been
1694                  * triggered. Flush it.
1695                  */
1696                 flush_work(&mvm->sta_drained_wk);
1697         }
1698 }
1699
1700 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1701                                          struct ieee80211_vif *vif)
1702 {
1703         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1704         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1705
1706         iwl_mvm_prepare_mac_removal(mvm, vif);
1707
1708         mutex_lock(&mvm->mutex);
1709
1710         if (mvm->bf_allowed_vif == mvmvif) {
1711                 mvm->bf_allowed_vif = NULL;
1712                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1713                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1714         }
1715
1716         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1717
1718         /*
1719          * For AP/GO interface, the tear down of the resources allocated to the
1720          * interface is be handled as part of the stop_ap flow.
1721          */
1722         if (vif->type == NL80211_IFTYPE_AP ||
1723             vif->type == NL80211_IFTYPE_ADHOC) {
1724 #ifdef CONFIG_NL80211_TESTMODE
1725                 if (vif == mvm->noa_vif) {
1726                         mvm->noa_vif = NULL;
1727                         mvm->noa_duration = 0;
1728                 }
1729 #endif
1730                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1731                 goto out_release;
1732         }
1733
1734         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1735                 mvm->p2p_device_vif = NULL;
1736                 iwl_mvm_rm_bcast_sta(mvm, vif);
1737                 iwl_mvm_binding_remove_vif(mvm, vif);
1738                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1739                 mvmvif->phy_ctxt = NULL;
1740         }
1741
1742         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1743                 mvm->vif_count--;
1744
1745         iwl_mvm_power_update_mac(mvm);
1746         iwl_mvm_mac_ctxt_remove(mvm, vif);
1747
1748 out_release:
1749         iwl_mvm_mac_ctxt_release(mvm, vif);
1750         mutex_unlock(&mvm->mutex);
1751 }
1752
1753 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1754 {
1755         return 0;
1756 }
1757
1758 struct iwl_mvm_mc_iter_data {
1759         struct iwl_mvm *mvm;
1760         int port_id;
1761 };
1762
1763 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1764                                       struct ieee80211_vif *vif)
1765 {
1766         struct iwl_mvm_mc_iter_data *data = _data;
1767         struct iwl_mvm *mvm = data->mvm;
1768         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1769         int ret, len;
1770
1771         /* if we don't have free ports, mcast frames will be dropped */
1772         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1773                 return;
1774
1775         if (vif->type != NL80211_IFTYPE_STATION ||
1776             !vif->bss_conf.assoc)
1777                 return;
1778
1779         cmd->port_id = data->port_id++;
1780         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1781         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1782
1783         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1784         if (ret)
1785                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1786 }
1787
1788 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1789 {
1790         struct iwl_mvm_mc_iter_data iter_data = {
1791                 .mvm = mvm,
1792         };
1793
1794         lockdep_assert_held(&mvm->mutex);
1795
1796         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1797                 return;
1798
1799         ieee80211_iterate_active_interfaces_atomic(
1800                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1801                 iwl_mvm_mc_iface_iterator, &iter_data);
1802 }
1803
1804 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1805                                      struct netdev_hw_addr_list *mc_list)
1806 {
1807         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1808         struct iwl_mcast_filter_cmd *cmd;
1809         struct netdev_hw_addr *addr;
1810         int addr_count;
1811         bool pass_all;
1812         int len;
1813
1814         addr_count = netdev_hw_addr_list_count(mc_list);
1815         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1816                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1817         if (pass_all)
1818                 addr_count = 0;
1819
1820         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1821         cmd = kzalloc(len, GFP_ATOMIC);
1822         if (!cmd)
1823                 return 0;
1824
1825         if (pass_all) {
1826                 cmd->pass_all = 1;
1827                 return (u64)(unsigned long)cmd;
1828         }
1829
1830         netdev_hw_addr_list_for_each(addr, mc_list) {
1831                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1832                                    cmd->count, addr->addr);
1833                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1834                        addr->addr, ETH_ALEN);
1835                 cmd->count++;
1836         }
1837
1838         return (u64)(unsigned long)cmd;
1839 }
1840
1841 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1842                                      unsigned int changed_flags,
1843                                      unsigned int *total_flags,
1844                                      u64 multicast)
1845 {
1846         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1847         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1848
1849         mutex_lock(&mvm->mutex);
1850
1851         /* replace previous configuration */
1852         kfree(mvm->mcast_filter_cmd);
1853         mvm->mcast_filter_cmd = cmd;
1854
1855         if (!cmd)
1856                 goto out;
1857
1858         iwl_mvm_recalc_multicast(mvm);
1859 out:
1860         mutex_unlock(&mvm->mutex);
1861         *total_flags = 0;
1862 }
1863
1864 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1865 struct iwl_bcast_iter_data {
1866         struct iwl_mvm *mvm;
1867         struct iwl_bcast_filter_cmd *cmd;
1868         u8 current_filter;
1869 };
1870
1871 static void
1872 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1873                          const struct iwl_fw_bcast_filter *in_filter,
1874                          struct iwl_fw_bcast_filter *out_filter)
1875 {
1876         struct iwl_fw_bcast_filter_attr *attr;
1877         int i;
1878
1879         memcpy(out_filter, in_filter, sizeof(*out_filter));
1880
1881         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1882                 attr = &out_filter->attrs[i];
1883
1884                 if (!attr->mask)
1885                         break;
1886
1887                 switch (attr->reserved1) {
1888                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1889                         if (vif->bss_conf.arp_addr_cnt != 1) {
1890                                 attr->mask = 0;
1891                                 continue;
1892                         }
1893
1894                         attr->val = vif->bss_conf.arp_addr_list[0];
1895                         break;
1896                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1897                         attr->val = *(__be32 *)&vif->addr[2];
1898                         break;
1899                 default:
1900                         break;
1901                 }
1902                 attr->reserved1 = 0;
1903                 out_filter->num_attrs++;
1904         }
1905 }
1906
1907 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1908                                           struct ieee80211_vif *vif)
1909 {
1910         struct iwl_bcast_iter_data *data = _data;
1911         struct iwl_mvm *mvm = data->mvm;
1912         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1913         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1914         struct iwl_fw_bcast_mac *bcast_mac;
1915         int i;
1916
1917         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1918                 return;
1919
1920         bcast_mac = &cmd->macs[mvmvif->id];
1921
1922         /*
1923          * enable filtering only for associated stations, but not for P2P
1924          * Clients
1925          */
1926         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1927             !vif->bss_conf.assoc)
1928                 return;
1929
1930         bcast_mac->default_discard = 1;
1931
1932         /* copy all configured filters */
1933         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1934                 /*
1935                  * Make sure we don't exceed our filters limit.
1936                  * if there is still a valid filter to be configured,
1937                  * be on the safe side and just allow bcast for this mac.
1938                  */
1939                 if (WARN_ON_ONCE(data->current_filter >=
1940                                  ARRAY_SIZE(cmd->filters))) {
1941                         bcast_mac->default_discard = 0;
1942                         bcast_mac->attached_filters = 0;
1943                         break;
1944                 }
1945
1946                 iwl_mvm_set_bcast_filter(vif,
1947                                          &mvm->bcast_filters[i],
1948                                          &cmd->filters[data->current_filter]);
1949
1950                 /* skip current filter if it contains no attributes */
1951                 if (!cmd->filters[data->current_filter].num_attrs)
1952                         continue;
1953
1954                 /* attach the filter to current mac */
1955                 bcast_mac->attached_filters |=
1956                                 cpu_to_le16(BIT(data->current_filter));
1957
1958                 data->current_filter++;
1959         }
1960 }
1961
1962 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1963                                     struct iwl_bcast_filter_cmd *cmd)
1964 {
1965         struct iwl_bcast_iter_data iter_data = {
1966                 .mvm = mvm,
1967                 .cmd = cmd,
1968         };
1969
1970         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1971                 return false;
1972
1973         memset(cmd, 0, sizeof(*cmd));
1974         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1975         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1976
1977 #ifdef CONFIG_IWLWIFI_DEBUGFS
1978         /* use debugfs filters/macs if override is configured */
1979         if (mvm->dbgfs_bcast_filtering.override) {
1980                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1981                        sizeof(cmd->filters));
1982                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1983                        sizeof(cmd->macs));
1984                 return true;
1985         }
1986 #endif
1987
1988         /* if no filters are configured, do nothing */
1989         if (!mvm->bcast_filters)
1990                 return false;
1991
1992         /* configure and attach these filters for each associated sta vif */
1993         ieee80211_iterate_active_interfaces(
1994                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1995                 iwl_mvm_bcast_filter_iterator, &iter_data);
1996
1997         return true;
1998 }
1999 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2000                                           struct ieee80211_vif *vif)
2001 {
2002         struct iwl_bcast_filter_cmd cmd;
2003
2004         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2005                 return 0;
2006
2007         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2008                 return 0;
2009
2010         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2011                                     sizeof(cmd), &cmd);
2012 }
2013 #else
2014 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2015                                                  struct ieee80211_vif *vif)
2016 {
2017         return 0;
2018 }
2019 #endif
2020
2021 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2022                                              struct ieee80211_vif *vif,
2023                                              struct ieee80211_bss_conf *bss_conf,
2024                                              u32 changes)
2025 {
2026         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2027         int ret;
2028
2029         /*
2030          * Re-calculate the tsf id, as the master-slave relations depend on the
2031          * beacon interval, which was not known when the station interface was
2032          * added.
2033          */
2034         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2035                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2036
2037         /*
2038          * If we're not associated yet, take the (new) BSSID before associating
2039          * so the firmware knows. If we're already associated, then use the old
2040          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2041          * branch for disassociation below.
2042          */
2043         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2044                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2045
2046         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2047         if (ret)
2048                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2049
2050         /* after sending it once, adopt mac80211 data */
2051         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2052         mvmvif->associated = bss_conf->assoc;
2053
2054         if (changes & BSS_CHANGED_ASSOC) {
2055                 if (bss_conf->assoc) {
2056                         /* clear statistics to get clean beacon counter */
2057                         iwl_mvm_request_statistics(mvm, true);
2058                         memset(&mvmvif->beacon_stats, 0,
2059                                sizeof(mvmvif->beacon_stats));
2060
2061                         /* add quota for this interface */
2062                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2063                         if (ret) {
2064                                 IWL_ERR(mvm, "failed to update quotas\n");
2065                                 return;
2066                         }
2067
2068                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2069                                      &mvm->status)) {
2070                                 /*
2071                                  * If we're restarting then the firmware will
2072                                  * obviously have lost synchronisation with
2073                                  * the AP. It will attempt to synchronise by
2074                                  * itself, but we can make it more reliable by
2075                                  * scheduling a session protection time event.
2076                                  *
2077                                  * The firmware needs to receive a beacon to
2078                                  * catch up with synchronisation, use 110% of
2079                                  * the beacon interval.
2080                                  *
2081                                  * Set a large maximum delay to allow for more
2082                                  * than a single interface.
2083                                  */
2084                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2085                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2086                                                         5 * dur, false);
2087                         }
2088
2089                         iwl_mvm_sf_update(mvm, vif, false);
2090                         iwl_mvm_power_vif_assoc(mvm, vif);
2091                         if (vif->p2p) {
2092                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2093                                 iwl_mvm_update_smps(mvm, vif,
2094                                                     IWL_MVM_SMPS_REQ_PROT,
2095                                                     IEEE80211_SMPS_DYNAMIC);
2096                         }
2097                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2098                         /*
2099                          * If update fails - SF might be running in associated
2100                          * mode while disassociated - which is forbidden.
2101                          */
2102                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2103                                   "Failed to update SF upon disassociation\n");
2104
2105                         /* remove AP station now that the MAC is unassoc */
2106                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2107                         if (ret)
2108                                 IWL_ERR(mvm, "failed to remove AP station\n");
2109
2110                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2111                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2112                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2113                         /* remove quota for this interface */
2114                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2115                         if (ret)
2116                                 IWL_ERR(mvm, "failed to update quotas\n");
2117
2118                         if (vif->p2p)
2119                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2120
2121                         /* this will take the cleared BSSID from bss_conf */
2122                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2123                         if (ret)
2124                                 IWL_ERR(mvm,
2125                                         "failed to update MAC %pM (clear after unassoc)\n",
2126                                         vif->addr);
2127                 }
2128
2129                 iwl_mvm_recalc_multicast(mvm);
2130                 iwl_mvm_configure_bcast_filter(mvm, vif);
2131
2132                 /* reset rssi values */
2133                 mvmvif->bf_data.ave_beacon_signal = 0;
2134
2135                 iwl_mvm_bt_coex_vif_change(mvm);
2136                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2137                                     IEEE80211_SMPS_AUTOMATIC);
2138         } else if (changes & BSS_CHANGED_BEACON_INFO) {
2139                 /*
2140                  * We received a beacon _after_ association so
2141                  * remove the session protection.
2142                  */
2143                 iwl_mvm_remove_time_event(mvm, mvmvif,
2144                                           &mvmvif->time_event_data);
2145         }
2146
2147         if (changes & BSS_CHANGED_BEACON_INFO) {
2148                 iwl_mvm_sf_update(mvm, vif, false);
2149                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2150         }
2151
2152         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2153                 ret = iwl_mvm_power_update_mac(mvm);
2154                 if (ret)
2155                         IWL_ERR(mvm, "failed to update power mode\n");
2156         }
2157
2158         if (changes & BSS_CHANGED_TXPOWER) {
2159                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2160                                 bss_conf->txpower);
2161                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2162         }
2163
2164         if (changes & BSS_CHANGED_CQM) {
2165                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2166                 /* reset cqm events tracking */
2167                 mvmvif->bf_data.last_cqm_event = 0;
2168                 if (mvmvif->bf_data.bf_enabled) {
2169                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2170                         if (ret)
2171                                 IWL_ERR(mvm,
2172                                         "failed to update CQM thresholds\n");
2173                 }
2174         }
2175
2176         if (changes & BSS_CHANGED_ARP_FILTER) {
2177                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2178                 iwl_mvm_configure_bcast_filter(mvm, vif);
2179         }
2180 }
2181
2182 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2183                                  struct ieee80211_vif *vif)
2184 {
2185         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2186         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2187         int ret;
2188
2189         /*
2190          * iwl_mvm_mac_ctxt_add() might read directly from the device
2191          * (the system time), so make sure it is available.
2192          */
2193         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2194         if (ret)
2195                 return ret;
2196
2197         mutex_lock(&mvm->mutex);
2198
2199         /* Send the beacon template */
2200         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2201         if (ret)
2202                 goto out_unlock;
2203
2204         /*
2205          * Re-calculate the tsf id, as the master-slave relations depend on the
2206          * beacon interval, which was not known when the AP interface was added.
2207          */
2208         if (vif->type == NL80211_IFTYPE_AP)
2209                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2210
2211         /* Add the mac context */
2212         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2213         if (ret)
2214                 goto out_unlock;
2215
2216         /* Perform the binding */
2217         ret = iwl_mvm_binding_add_vif(mvm, vif);
2218         if (ret)
2219                 goto out_remove;
2220
2221         /* Send the bcast station. At this stage the TBTT and DTIM time events
2222          * are added and applied to the scheduler */
2223         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2224         if (ret)
2225                 goto out_unbind;
2226
2227         /* must be set before quota calculations */
2228         mvmvif->ap_ibss_active = true;
2229
2230         /* power updated needs to be done before quotas */
2231         iwl_mvm_power_update_mac(mvm);
2232
2233         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2234         if (ret)
2235                 goto out_quota_failed;
2236
2237         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2238         if (vif->p2p && mvm->p2p_device_vif)
2239                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2240
2241         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2242
2243         iwl_mvm_bt_coex_vif_change(mvm);
2244
2245         /* we don't support TDLS during DCM */
2246         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2247                 iwl_mvm_teardown_tdls_peers(mvm);
2248
2249         goto out_unlock;
2250
2251 out_quota_failed:
2252         iwl_mvm_power_update_mac(mvm);
2253         mvmvif->ap_ibss_active = false;
2254         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2255 out_unbind:
2256         iwl_mvm_binding_remove_vif(mvm, vif);
2257 out_remove:
2258         iwl_mvm_mac_ctxt_remove(mvm, vif);
2259 out_unlock:
2260         mutex_unlock(&mvm->mutex);
2261         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2262         return ret;
2263 }
2264
2265 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2266                                  struct ieee80211_vif *vif)
2267 {
2268         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2269         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2270
2271         iwl_mvm_prepare_mac_removal(mvm, vif);
2272
2273         mutex_lock(&mvm->mutex);
2274
2275         /* Handle AP stop while in CSA */
2276         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2277                 iwl_mvm_remove_time_event(mvm, mvmvif,
2278                                           &mvmvif->time_event_data);
2279                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2280         }
2281
2282         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2283                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2284                 mvm->csa_tx_block_bcn_timeout = 0;
2285         }
2286
2287         mvmvif->ap_ibss_active = false;
2288         mvm->ap_last_beacon_gp2 = 0;
2289
2290         iwl_mvm_bt_coex_vif_change(mvm);
2291
2292         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2293
2294         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2295         if (vif->p2p && mvm->p2p_device_vif)
2296                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2297
2298         iwl_mvm_update_quotas(mvm, false, NULL);
2299         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2300         iwl_mvm_binding_remove_vif(mvm, vif);
2301
2302         iwl_mvm_power_update_mac(mvm);
2303
2304         iwl_mvm_mac_ctxt_remove(mvm, vif);
2305
2306         mutex_unlock(&mvm->mutex);
2307 }
2308
2309 static void
2310 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2311                                  struct ieee80211_vif *vif,
2312                                  struct ieee80211_bss_conf *bss_conf,
2313                                  u32 changes)
2314 {
2315         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2316
2317         /* Changes will be applied when the AP/IBSS is started */
2318         if (!mvmvif->ap_ibss_active)
2319                 return;
2320
2321         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2322                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2323             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2324                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2325
2326         /* Need to send a new beacon template to the FW */
2327         if (changes & BSS_CHANGED_BEACON &&
2328             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2329                 IWL_WARN(mvm, "Failed updating beacon data\n");
2330
2331         if (changes & BSS_CHANGED_TXPOWER) {
2332                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2333                                 bss_conf->txpower);
2334                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2335         }
2336
2337 }
2338
2339 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2340                                      struct ieee80211_vif *vif,
2341                                      struct ieee80211_bss_conf *bss_conf,
2342                                      u32 changes)
2343 {
2344         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2345
2346         /*
2347          * iwl_mvm_bss_info_changed_station() might call
2348          * iwl_mvm_protect_session(), which reads directly from
2349          * the device (the system time), so make sure it is available.
2350          */
2351         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2352                 return;
2353
2354         mutex_lock(&mvm->mutex);
2355
2356         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2357                 iwl_mvm_scan_offload_stop(mvm, true);
2358
2359         switch (vif->type) {
2360         case NL80211_IFTYPE_STATION:
2361                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2362                 break;
2363         case NL80211_IFTYPE_AP:
2364         case NL80211_IFTYPE_ADHOC:
2365                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2366                 break;
2367         default:
2368                 /* shouldn't happen */
2369                 WARN_ON_ONCE(1);
2370         }
2371
2372         mutex_unlock(&mvm->mutex);
2373         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2374 }
2375
2376 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2377                                           enum iwl_scan_status scan_type)
2378 {
2379         int ret;
2380         bool wait_for_handlers = false;
2381
2382         mutex_lock(&mvm->mutex);
2383
2384         if (mvm->scan_status != scan_type) {
2385                 ret = 0;
2386                 /* make sure there are no pending notifications */
2387                 wait_for_handlers = true;
2388                 goto out;
2389         }
2390
2391         switch (scan_type) {
2392         case IWL_MVM_SCAN_SCHED:
2393                 ret = iwl_mvm_scan_offload_stop(mvm, true);
2394                 break;
2395         case IWL_MVM_SCAN_OS:
2396                 ret = iwl_mvm_cancel_scan(mvm);
2397                 break;
2398         case IWL_MVM_SCAN_NONE:
2399         default:
2400                 WARN_ON_ONCE(1);
2401                 ret = -EINVAL;
2402                 break;
2403         }
2404         if (ret)
2405                 goto out;
2406
2407         wait_for_handlers = true;
2408 out:
2409         mutex_unlock(&mvm->mutex);
2410
2411         /* make sure we consume the completion notification */
2412         if (wait_for_handlers)
2413                 iwl_mvm_wait_for_async_handlers(mvm);
2414
2415         return ret;
2416 }
2417 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2418                                struct ieee80211_vif *vif,
2419                                struct ieee80211_scan_request *hw_req)
2420 {
2421         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2422         struct cfg80211_scan_request *req = &hw_req->req;
2423         int ret;
2424
2425         if (req->n_channels == 0 ||
2426             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2427                 return -EINVAL;
2428
2429         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2430                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2431                 if (ret)
2432                         return ret;
2433         }
2434
2435         mutex_lock(&mvm->mutex);
2436
2437         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2438                 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2439                 ret = -EBUSY;
2440                 goto out;
2441         }
2442
2443         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2444                 ret = -EBUSY;
2445                 goto out;
2446         }
2447
2448         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2449
2450         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2451                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2452         else
2453                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2454
2455         if (ret)
2456                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2457 out:
2458         mutex_unlock(&mvm->mutex);
2459         return ret;
2460 }
2461
2462 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2463                                        struct ieee80211_vif *vif)
2464 {
2465         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2466
2467         mutex_lock(&mvm->mutex);
2468
2469         /* Due to a race condition, it's possible that mac80211 asks
2470          * us to stop a hw_scan when it's already stopped.  This can
2471          * happen, for instance, if we stopped the scan ourselves,
2472          * called ieee80211_scan_completed() and the userspace called
2473          * cancel scan scan before ieee80211_scan_work() could run.
2474          * To handle that, simply return if the scan is not running.
2475         */
2476         /* FIXME: for now, we ignore this race for UMAC scans, since
2477          * they don't set the scan_status.
2478          */
2479         if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2480             (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2481                 iwl_mvm_cancel_scan(mvm);
2482
2483         mutex_unlock(&mvm->mutex);
2484 }
2485
2486 static void
2487 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2488                                   struct ieee80211_sta *sta, u16 tids,
2489                                   int num_frames,
2490                                   enum ieee80211_frame_release_type reason,
2491                                   bool more_data)
2492 {
2493         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2494
2495         /* Called when we need to transmit (a) frame(s) from mac80211 */
2496
2497         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2498                                           tids, more_data, false);
2499 }
2500
2501 static void
2502 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2503                                     struct ieee80211_sta *sta, u16 tids,
2504                                     int num_frames,
2505                                     enum ieee80211_frame_release_type reason,
2506                                     bool more_data)
2507 {
2508         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2509
2510         /* Called when we need to transmit (a) frame(s) from agg queue */
2511
2512         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2513                                           tids, more_data, true);
2514 }
2515
2516 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2517                                    struct ieee80211_vif *vif,
2518                                    enum sta_notify_cmd cmd,
2519                                    struct ieee80211_sta *sta)
2520 {
2521         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2522         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2523         unsigned long txqs = 0, tids = 0;
2524         int tid;
2525
2526         spin_lock_bh(&mvmsta->lock);
2527         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2528                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2529
2530                 if (tid_data->state != IWL_AGG_ON &&
2531                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2532                         continue;
2533
2534                 __set_bit(tid_data->txq_id, &txqs);
2535
2536                 if (iwl_mvm_tid_queued(tid_data) == 0)
2537                         continue;
2538
2539                 __set_bit(tid, &tids);
2540         }
2541
2542         switch (cmd) {
2543         case STA_NOTIFY_SLEEP:
2544                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2545                         ieee80211_sta_block_awake(hw, sta, true);
2546
2547                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2548                         ieee80211_sta_set_buffered(sta, tid, true);
2549
2550                 if (txqs)
2551                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2552                 /*
2553                  * The fw updates the STA to be asleep. Tx packets on the Tx
2554                  * queues to this station will not be transmitted. The fw will
2555                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2556                  */
2557                 break;
2558         case STA_NOTIFY_AWAKE:
2559                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2560                         break;
2561
2562                 if (txqs)
2563                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2564                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2565                 break;
2566         default:
2567                 break;
2568         }
2569         spin_unlock_bh(&mvmsta->lock);
2570 }
2571
2572 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2573                                        struct ieee80211_vif *vif,
2574                                        struct ieee80211_sta *sta)
2575 {
2576         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2577         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2578
2579         /*
2580          * This is called before mac80211 does RCU synchronisation,
2581          * so here we already invalidate our internal RCU-protected
2582          * station pointer. The rest of the code will thus no longer
2583          * be able to find the station this way, and we don't rely
2584          * on further RCU synchronisation after the sta_state()
2585          * callback deleted the station.
2586          */
2587         mutex_lock(&mvm->mutex);
2588         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2589                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2590                                    ERR_PTR(-ENOENT));
2591         mutex_unlock(&mvm->mutex);
2592 }
2593
2594 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2595                                 const u8 *bssid)
2596 {
2597         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2598                 return;
2599
2600         if (iwlwifi_mod_params.uapsd_disable) {
2601                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2602                 return;
2603         }
2604
2605         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2606 }
2607
2608 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2609                                  struct ieee80211_vif *vif,
2610                                  struct ieee80211_sta *sta,
2611                                  enum ieee80211_sta_state old_state,
2612                                  enum ieee80211_sta_state new_state)
2613 {
2614         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2615         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2616         int ret;
2617
2618         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2619                            sta->addr, old_state, new_state);
2620
2621         /* this would be a mac80211 bug ... but don't crash */
2622         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2623                 return -EINVAL;
2624
2625         /* if a STA is being removed, reuse its ID */
2626         flush_work(&mvm->sta_drained_wk);
2627
2628         mutex_lock(&mvm->mutex);
2629         if (old_state == IEEE80211_STA_NOTEXIST &&
2630             new_state == IEEE80211_STA_NONE) {
2631                 /*
2632                  * Firmware bug - it'll crash if the beacon interval is less
2633                  * than 16. We can't avoid connecting at all, so refuse the
2634                  * station state change, this will cause mac80211 to abandon
2635                  * attempts to connect to this AP, and eventually wpa_s will
2636                  * blacklist the AP...
2637                  */
2638                 if (vif->type == NL80211_IFTYPE_STATION &&
2639                     vif->bss_conf.beacon_int < 16) {
2640                         IWL_ERR(mvm,
2641                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2642                                 sta->addr, vif->bss_conf.beacon_int);
2643                         ret = -EINVAL;
2644                         goto out_unlock;
2645                 }
2646
2647                 if (sta->tdls &&
2648                     (vif->p2p ||
2649                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2650                                                 IWL_MVM_TDLS_STA_COUNT ||
2651                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2652                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2653                         ret = -EBUSY;
2654                         goto out_unlock;
2655                 }
2656
2657                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2658                 if (sta->tdls && ret == 0)
2659                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2660         } else if (old_state == IEEE80211_STA_NONE &&
2661                    new_state == IEEE80211_STA_AUTH) {
2662                 /*
2663                  * EBS may be disabled due to previous failures reported by FW.
2664                  * Reset EBS status here assuming environment has been changed.
2665                  */
2666                 mvm->last_ebs_successful = true;
2667                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2668                 ret = 0;
2669         } else if (old_state == IEEE80211_STA_AUTH &&
2670                    new_state == IEEE80211_STA_ASSOC) {
2671                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2672                 if (ret == 0)
2673                         iwl_mvm_rs_rate_init(mvm, sta,
2674                                              mvmvif->phy_ctxt->channel->band,
2675                                              true);
2676         } else if (old_state == IEEE80211_STA_ASSOC &&
2677                    new_state == IEEE80211_STA_AUTHORIZED) {
2678
2679                 /* we don't support TDLS during DCM */
2680                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2681                         iwl_mvm_teardown_tdls_peers(mvm);
2682
2683                 /* enable beacon filtering */
2684                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2685                 ret = 0;
2686         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2687                    new_state == IEEE80211_STA_ASSOC) {
2688                 /* disable beacon filtering */
2689                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2690                 ret = 0;
2691         } else if (old_state == IEEE80211_STA_ASSOC &&
2692                    new_state == IEEE80211_STA_AUTH) {
2693                 ret = 0;
2694         } else if (old_state == IEEE80211_STA_AUTH &&
2695                    new_state == IEEE80211_STA_NONE) {
2696                 ret = 0;
2697         } else if (old_state == IEEE80211_STA_NONE &&
2698                    new_state == IEEE80211_STA_NOTEXIST) {
2699                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2700                 if (sta->tdls)
2701                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2702         } else {
2703                 ret = -EIO;
2704         }
2705  out_unlock:
2706         mutex_unlock(&mvm->mutex);
2707
2708         if (sta->tdls && ret == 0) {
2709                 if (old_state == IEEE80211_STA_NOTEXIST &&
2710                     new_state == IEEE80211_STA_NONE)
2711                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2712                 else if (old_state == IEEE80211_STA_NONE &&
2713                          new_state == IEEE80211_STA_NOTEXIST)
2714                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2715         }
2716
2717         return ret;
2718 }
2719
2720 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2721 {
2722         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2723
2724         mvm->rts_threshold = value;
2725
2726         return 0;
2727 }
2728
2729 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2730                                   struct ieee80211_vif *vif,
2731                                   struct ieee80211_sta *sta, u32 changed)
2732 {
2733         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2734
2735         if (vif->type == NL80211_IFTYPE_STATION &&
2736             changed & IEEE80211_RC_NSS_CHANGED)
2737                 iwl_mvm_sf_update(mvm, vif, false);
2738 }
2739
2740 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2741                                struct ieee80211_vif *vif, u16 ac,
2742                                const struct ieee80211_tx_queue_params *params)
2743 {
2744         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2745         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2746
2747         mvmvif->queue_params[ac] = *params;
2748
2749         /*
2750          * No need to update right away, we'll get BSS_CHANGED_QOS
2751          * The exception is P2P_DEVICE interface which needs immediate update.
2752          */
2753         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2754                 int ret;
2755
2756                 mutex_lock(&mvm->mutex);
2757                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2758                 mutex_unlock(&mvm->mutex);
2759                 return ret;
2760         }
2761         return 0;
2762 }
2763
2764 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2765                                       struct ieee80211_vif *vif)
2766 {
2767         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2768         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2769                            200 + vif->bss_conf.beacon_int);
2770         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2771                                100 + vif->bss_conf.beacon_int);
2772
2773         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2774                 return;
2775
2776         /*
2777          * iwl_mvm_protect_session() reads directly from the device
2778          * (the system time), so make sure it is available.
2779          */
2780         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2781                 return;
2782
2783         mutex_lock(&mvm->mutex);
2784         /* Try really hard to protect the session and hear a beacon */
2785         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2786         mutex_unlock(&mvm->mutex);
2787
2788         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2789 }
2790
2791 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2792                                         struct ieee80211_vif *vif,
2793                                         struct cfg80211_sched_scan_request *req,
2794                                         struct ieee80211_scan_ies *ies)
2795 {
2796         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2797         int ret;
2798
2799         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2800                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2801                 if (ret)
2802                         return ret;
2803         }
2804
2805         mutex_lock(&mvm->mutex);
2806
2807         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2808                 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2809                 ret = -EBUSY;
2810                 goto out;
2811         }
2812
2813         if (!vif->bss_conf.idle) {
2814                 ret = -EBUSY;
2815                 goto out;
2816         }
2817
2818         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2819                 ret = -EBUSY;
2820                 goto out;
2821         }
2822
2823         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2824         if (ret)
2825                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2826
2827 out:
2828         mutex_unlock(&mvm->mutex);
2829         return ret;
2830 }
2831
2832 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2833                                        struct ieee80211_vif *vif)
2834 {
2835         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2836         int ret;
2837
2838         mutex_lock(&mvm->mutex);
2839
2840         /* Due to a race condition, it's possible that mac80211 asks
2841          * us to stop a sched_scan when it's already stopped.  This
2842          * can happen, for instance, if we stopped the scan ourselves,
2843          * called ieee80211_sched_scan_stopped() and the userspace called
2844          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2845          * could run.  To handle this, simply return if the scan is
2846          * not running.
2847         */
2848         /* FIXME: for now, we ignore this race for UMAC scans, since
2849          * they don't set the scan_status.
2850          */
2851         if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2852             !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2853                 mutex_unlock(&mvm->mutex);
2854                 return 0;
2855         }
2856
2857         ret = iwl_mvm_scan_offload_stop(mvm, false);
2858         mutex_unlock(&mvm->mutex);
2859         iwl_mvm_wait_for_async_handlers(mvm);
2860
2861         return ret;
2862 }
2863
2864 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2865                                enum set_key_cmd cmd,
2866                                struct ieee80211_vif *vif,
2867                                struct ieee80211_sta *sta,
2868                                struct ieee80211_key_conf *key)
2869 {
2870         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2871         int ret;
2872
2873         if (iwlwifi_mod_params.sw_crypto) {
2874                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2875                 return -EOPNOTSUPP;
2876         }
2877
2878         switch (key->cipher) {
2879         case WLAN_CIPHER_SUITE_TKIP:
2880                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2881                 /* fall-through */
2882         case WLAN_CIPHER_SUITE_CCMP:
2883                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2884                 break;
2885         case WLAN_CIPHER_SUITE_AES_CMAC:
2886                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2887                 break;
2888         case WLAN_CIPHER_SUITE_WEP40:
2889         case WLAN_CIPHER_SUITE_WEP104:
2890                 /* For non-client mode, only use WEP keys for TX as we probably
2891                  * don't have a station yet anyway and would then have to keep
2892                  * track of the keys, linking them to each of the clients/peers
2893                  * as they appear. For now, don't do that, for performance WEP
2894                  * offload doesn't really matter much, but we need it for some
2895                  * other offload features in client mode.
2896                  */
2897                 if (vif->type != NL80211_IFTYPE_STATION)
2898                         return 0;
2899                 break;
2900         default:
2901                 /* currently FW supports only one optional cipher scheme */
2902                 if (hw->n_cipher_schemes &&
2903                     hw->cipher_schemes->cipher == key->cipher)
2904                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2905                 else
2906                         return -EOPNOTSUPP;
2907         }
2908
2909         mutex_lock(&mvm->mutex);
2910
2911         switch (cmd) {
2912         case SET_KEY:
2913                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2914                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2915                         /*
2916                          * GTK on AP interface is a TX-only key, return 0;
2917                          * on IBSS they're per-station and because we're lazy
2918                          * we don't support them for RX, so do the same.
2919                          */
2920                         ret = 0;
2921                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2922                         break;
2923                 }
2924
2925                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2926                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2927                 if (ret) {
2928                         IWL_WARN(mvm, "set key failed\n");
2929                         /*
2930                          * can't add key for RX, but we don't need it
2931                          * in the device for TX so still return 0
2932                          */
2933                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2934                         ret = 0;
2935                 }
2936
2937                 break;
2938         case DISABLE_KEY:
2939                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2940                         ret = 0;
2941                         break;
2942                 }
2943
2944                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2945                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2946                 break;
2947         default:
2948                 ret = -EINVAL;
2949         }
2950
2951         mutex_unlock(&mvm->mutex);
2952         return ret;
2953 }
2954
2955 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2956                                         struct ieee80211_vif *vif,
2957                                         struct ieee80211_key_conf *keyconf,
2958                                         struct ieee80211_sta *sta,
2959                                         u32 iv32, u16 *phase1key)
2960 {
2961         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2962
2963         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2964                 return;
2965
2966         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2967 }
2968
2969
2970 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2971                                struct iwl_rx_packet *pkt, void *data)
2972 {
2973         struct iwl_mvm *mvm =
2974                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2975         struct iwl_hs20_roc_res *resp;
2976         int resp_len = iwl_rx_packet_payload_len(pkt);
2977         struct iwl_mvm_time_event_data *te_data = data;
2978
2979         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2980                 return true;
2981
2982         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2983                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2984                 return true;
2985         }
2986
2987         resp = (void *)pkt->data;
2988
2989         IWL_DEBUG_TE(mvm,
2990                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2991                      resp->status, resp->event_unique_id);
2992
2993         te_data->uid = le32_to_cpu(resp->event_unique_id);
2994         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2995                      te_data->uid);
2996
2997         spin_lock_bh(&mvm->time_event_lock);
2998         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2999         spin_unlock_bh(&mvm->time_event_lock);
3000
3001         return true;
3002 }
3003
3004 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
3005 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3006                                     struct ieee80211_channel *channel,
3007                                     struct ieee80211_vif *vif,
3008                                     int duration)
3009 {
3010         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3011         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3012         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3013         static const u8 time_event_response[] = { HOT_SPOT_CMD };
3014         struct iwl_notification_wait wait_time_event;
3015         struct iwl_hs20_roc_req aux_roc_req = {
3016                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3017                 .id_and_color =
3018                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3019                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3020                 /* Set the channel info data */
3021                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3022                         PHY_BAND_24 : PHY_BAND_5,
3023                 .channel_info.channel = channel->hw_value,
3024                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3025                 /* Set the time and duration */
3026                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3027                 .apply_time_max_delay =
3028                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3029                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3030          };
3031
3032         /* Set the node address */
3033         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3034
3035         lockdep_assert_held(&mvm->mutex);
3036
3037         spin_lock_bh(&mvm->time_event_lock);
3038
3039         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3040                 spin_unlock_bh(&mvm->time_event_lock);
3041                 return -EIO;
3042         }
3043
3044         te_data->vif = vif;
3045         te_data->duration = duration;
3046         te_data->id = HOT_SPOT_CMD;
3047
3048         spin_unlock_bh(&mvm->time_event_lock);
3049
3050         /*
3051          * Use a notification wait, which really just processes the
3052          * command response and doesn't wait for anything, in order
3053          * to be able to process the response and get the UID inside
3054          * the RX path. Using CMD_WANT_SKB doesn't work because it
3055          * stores the buffer and then wakes up this thread, by which
3056          * time another notification (that the time event started)
3057          * might already be processed unsuccessfully.
3058          */
3059         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3060                                    time_event_response,
3061                                    ARRAY_SIZE(time_event_response),
3062                                    iwl_mvm_rx_aux_roc, te_data);
3063
3064         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3065                                    &aux_roc_req);
3066
3067         if (res) {
3068                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3069                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3070                 goto out_clear_te;
3071         }
3072
3073         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3074         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3075         /* should never fail */
3076         WARN_ON_ONCE(res);
3077
3078         if (res) {
3079  out_clear_te:
3080                 spin_lock_bh(&mvm->time_event_lock);
3081                 iwl_mvm_te_clear_data(mvm, te_data);
3082                 spin_unlock_bh(&mvm->time_event_lock);
3083         }
3084
3085         return res;
3086 }
3087
3088 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3089                        struct ieee80211_vif *vif,
3090                        struct ieee80211_channel *channel,
3091                        int duration,
3092                        enum ieee80211_roc_type type)
3093 {
3094         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3095         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3096         struct cfg80211_chan_def chandef;
3097         struct iwl_mvm_phy_ctxt *phy_ctxt;
3098         int ret, i;
3099
3100         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3101                            duration, type);
3102
3103         flush_work(&mvm->roc_done_wk);
3104
3105         mutex_lock(&mvm->mutex);
3106
3107         switch (vif->type) {
3108         case NL80211_IFTYPE_STATION:
3109                 if (mvm->fw->ucode_capa.capa[0] &
3110                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3111                         /* Use aux roc framework (HS20) */
3112                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3113                                                        vif, duration);
3114                         goto out_unlock;
3115                 }
3116                 IWL_ERR(mvm, "hotspot not supported\n");
3117                 ret = -EINVAL;
3118                 goto out_unlock;
3119         case NL80211_IFTYPE_P2P_DEVICE:
3120                 /* handle below */
3121                 break;
3122         default:
3123                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3124                 ret = -EINVAL;
3125                 goto out_unlock;
3126         }
3127
3128         for (i = 0; i < NUM_PHY_CTX; i++) {
3129                 phy_ctxt = &mvm->phy_ctxts[i];
3130                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3131                         continue;
3132
3133                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3134                         /*
3135                          * Unbind the P2P_DEVICE from the current PHY context,
3136                          * and if the PHY context is not used remove it.
3137                          */
3138                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3139                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3140                                 goto out_unlock;
3141
3142                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3143
3144                         /* Bind the P2P_DEVICE to the current PHY Context */
3145                         mvmvif->phy_ctxt = phy_ctxt;
3146
3147                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3148                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3149                                 goto out_unlock;
3150
3151                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3152                         goto schedule_time_event;
3153                 }
3154         }
3155
3156         /* Need to update the PHY context only if the ROC channel changed */
3157         if (channel == mvmvif->phy_ctxt->channel)
3158                 goto schedule_time_event;
3159
3160         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3161
3162         /*
3163          * Change the PHY context configuration as it is currently referenced
3164          * only by the P2P Device MAC
3165          */
3166         if (mvmvif->phy_ctxt->ref == 1) {
3167                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3168                                                &chandef, 1, 1);
3169                 if (ret)
3170                         goto out_unlock;
3171         } else {
3172                 /*
3173                  * The PHY context is shared with other MACs. Need to remove the
3174                  * P2P Device from the binding, allocate an new PHY context and
3175                  * create a new binding
3176                  */
3177                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3178                 if (!phy_ctxt) {
3179                         ret = -ENOSPC;
3180                         goto out_unlock;
3181                 }
3182
3183                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3184                                                1, 1);
3185                 if (ret) {
3186                         IWL_ERR(mvm, "Failed to change PHY context\n");
3187                         goto out_unlock;
3188                 }
3189
3190                 /* Unbind the P2P_DEVICE from the current PHY context */
3191                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3192                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3193                         goto out_unlock;
3194
3195                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3196
3197                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3198                 mvmvif->phy_ctxt = phy_ctxt;
3199
3200                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3201                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3202                         goto out_unlock;
3203
3204                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3205         }
3206
3207 schedule_time_event:
3208         /* Schedule the time events */
3209         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3210
3211 out_unlock:
3212         mutex_unlock(&mvm->mutex);
3213         IWL_DEBUG_MAC80211(mvm, "leave\n");
3214         return ret;
3215 }
3216
3217 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3218 {
3219         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3220
3221         IWL_DEBUG_MAC80211(mvm, "enter\n");
3222
3223         mutex_lock(&mvm->mutex);
3224         iwl_mvm_stop_roc(mvm);
3225         mutex_unlock(&mvm->mutex);
3226
3227         IWL_DEBUG_MAC80211(mvm, "leave\n");
3228         return 0;
3229 }
3230
3231 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3232                                  struct ieee80211_chanctx_conf *ctx)
3233 {
3234         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3235         struct iwl_mvm_phy_ctxt *phy_ctxt;
3236         int ret;
3237
3238         lockdep_assert_held(&mvm->mutex);
3239
3240         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3241
3242         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3243         if (!phy_ctxt) {
3244                 ret = -ENOSPC;
3245                 goto out;
3246         }
3247
3248         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3249                                        ctx->rx_chains_static,
3250                                        ctx->rx_chains_dynamic);
3251         if (ret) {
3252                 IWL_ERR(mvm, "Failed to add PHY context\n");
3253                 goto out;
3254         }
3255
3256         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3257         *phy_ctxt_id = phy_ctxt->id;
3258 out:
3259         return ret;
3260 }
3261
3262 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3263                                struct ieee80211_chanctx_conf *ctx)
3264 {
3265         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3266         int ret;
3267
3268         mutex_lock(&mvm->mutex);
3269         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3270         mutex_unlock(&mvm->mutex);
3271
3272         return ret;
3273 }
3274
3275 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3276                                      struct ieee80211_chanctx_conf *ctx)
3277 {
3278         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3279         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3280
3281         lockdep_assert_held(&mvm->mutex);
3282
3283         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3284 }
3285
3286 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3287                                    struct ieee80211_chanctx_conf *ctx)
3288 {
3289         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3290
3291         mutex_lock(&mvm->mutex);
3292         __iwl_mvm_remove_chanctx(mvm, ctx);
3293         mutex_unlock(&mvm->mutex);
3294 }
3295
3296 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3297                                    struct ieee80211_chanctx_conf *ctx,
3298                                    u32 changed)
3299 {
3300         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3301         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3302         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3303
3304         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3305                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3306                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3307                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3308                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3309                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3310                       phy_ctxt->ref, changed))
3311                 return;
3312
3313         mutex_lock(&mvm->mutex);
3314         iwl_mvm_bt_coex_vif_change(mvm);
3315         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3316                                  ctx->rx_chains_static,
3317                                  ctx->rx_chains_dynamic);
3318         mutex_unlock(&mvm->mutex);
3319 }
3320
3321 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3322                                         struct ieee80211_vif *vif,
3323                                         struct ieee80211_chanctx_conf *ctx,
3324                                         bool switching_chanctx)
3325 {
3326         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3327         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3328         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3329         int ret;
3330
3331         lockdep_assert_held(&mvm->mutex);
3332
3333         mvmvif->phy_ctxt = phy_ctxt;
3334
3335         switch (vif->type) {
3336         case NL80211_IFTYPE_AP:
3337                 /* only needed if we're switching chanctx (i.e. during CSA) */
3338                 if (switching_chanctx) {
3339                         mvmvif->ap_ibss_active = true;
3340                         break;
3341                 }
3342         case NL80211_IFTYPE_ADHOC:
3343                 /*
3344                  * The AP binding flow is handled as part of the start_ap flow
3345                  * (in bss_info_changed), similarly for IBSS.
3346                  */
3347                 ret = 0;
3348                 goto out;
3349         case NL80211_IFTYPE_STATION:
3350                 break;
3351         case NL80211_IFTYPE_MONITOR:
3352                 /* always disable PS when a monitor interface is active */
3353                 mvmvif->ps_disabled = true;
3354                 break;
3355         default:
3356                 ret = -EINVAL;
3357                 goto out;
3358         }
3359
3360         ret = iwl_mvm_binding_add_vif(mvm, vif);
3361         if (ret)
3362                 goto out;
3363
3364         /*
3365          * Power state must be updated before quotas,
3366          * otherwise fw will complain.
3367          */
3368         iwl_mvm_power_update_mac(mvm);
3369
3370         /* Setting the quota at this stage is only required for monitor
3371          * interfaces. For the other types, the bss_info changed flow
3372          * will handle quota settings.
3373          */
3374         if (vif->type == NL80211_IFTYPE_MONITOR) {
3375                 mvmvif->monitor_active = true;
3376                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3377                 if (ret)
3378                         goto out_remove_binding;
3379         }
3380
3381         /* Handle binding during CSA */
3382         if (vif->type == NL80211_IFTYPE_AP) {
3383                 iwl_mvm_update_quotas(mvm, false, NULL);
3384                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3385         }
3386
3387         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3388                 u32 duration = 2 * vif->bss_conf.beacon_int;
3389
3390                 /* iwl_mvm_protect_session() reads directly from the
3391                  * device (the system time), so make sure it is
3392                  * available.
3393                  */
3394                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3395                 if (ret)
3396                         goto out_remove_binding;
3397
3398                 /* Protect the session to make sure we hear the first
3399                  * beacon on the new channel.
3400                  */
3401                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3402                                         vif->bss_conf.beacon_int / 2,
3403                                         true);
3404
3405                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3406
3407                 iwl_mvm_update_quotas(mvm, false, NULL);
3408         }
3409
3410         goto out;
3411
3412 out_remove_binding:
3413         iwl_mvm_binding_remove_vif(mvm, vif);
3414         iwl_mvm_power_update_mac(mvm);
3415 out:
3416         if (ret)
3417                 mvmvif->phy_ctxt = NULL;
3418         return ret;
3419 }
3420 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3421                                       struct ieee80211_vif *vif,
3422                                       struct ieee80211_chanctx_conf *ctx)
3423 {
3424         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3425         int ret;
3426
3427         mutex_lock(&mvm->mutex);
3428         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3429         mutex_unlock(&mvm->mutex);
3430
3431         return ret;
3432 }
3433
3434 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3435                                            struct ieee80211_vif *vif,
3436                                            struct ieee80211_chanctx_conf *ctx,
3437                                            bool switching_chanctx)
3438 {
3439         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3440         struct ieee80211_vif *disabled_vif = NULL;
3441
3442         lockdep_assert_held(&mvm->mutex);
3443
3444         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3445
3446         switch (vif->type) {
3447         case NL80211_IFTYPE_ADHOC:
3448                 goto out;
3449         case NL80211_IFTYPE_MONITOR:
3450                 mvmvif->monitor_active = false;
3451                 mvmvif->ps_disabled = false;
3452                 break;
3453         case NL80211_IFTYPE_AP:
3454                 /* This part is triggered only during CSA */
3455                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3456                         goto out;
3457
3458                 mvmvif->csa_countdown = false;
3459
3460                 /* Set CS bit on all the stations */
3461                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3462
3463                 /* Save blocked iface, the timeout is set on the next beacon */
3464                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3465
3466                 mvmvif->ap_ibss_active = false;
3467                 break;
3468         case NL80211_IFTYPE_STATION:
3469                 if (!switching_chanctx)
3470                         break;
3471
3472                 disabled_vif = vif;
3473
3474                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3475                 break;
3476         default:
3477                 break;
3478         }
3479
3480         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3481         iwl_mvm_binding_remove_vif(mvm, vif);
3482
3483 out:
3484         mvmvif->phy_ctxt = NULL;
3485         iwl_mvm_power_update_mac(mvm);
3486 }
3487
3488 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3489                                          struct ieee80211_vif *vif,
3490                                          struct ieee80211_chanctx_conf *ctx)
3491 {
3492         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3493
3494         mutex_lock(&mvm->mutex);
3495         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3496         mutex_unlock(&mvm->mutex);
3497 }
3498
3499 static int
3500 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3501                                 struct ieee80211_vif_chanctx_switch *vifs)
3502 {
3503         int ret;
3504
3505         mutex_lock(&mvm->mutex);
3506         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3507         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3508
3509         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3510         if (ret) {
3511                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3512                 goto out_reassign;
3513         }
3514
3515         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3516                                            true);
3517         if (ret) {
3518                 IWL_ERR(mvm,
3519                         "failed to assign new_ctx during channel switch\n");
3520                 goto out_remove;
3521         }
3522
3523         /* we don't support TDLS during DCM - can be caused by channel switch */
3524         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3525                 iwl_mvm_teardown_tdls_peers(mvm);
3526
3527         goto out;
3528
3529 out_remove:
3530         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3531
3532 out_reassign:
3533         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3534                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3535                 goto out_restart;
3536         }
3537
3538         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3539                                          true)) {
3540                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3541                 goto out_restart;
3542         }
3543
3544         goto out;
3545
3546 out_restart:
3547         /* things keep failing, better restart the hw */
3548         iwl_mvm_nic_restart(mvm, false);
3549
3550 out:
3551         mutex_unlock(&mvm->mutex);
3552
3553         return ret;
3554 }
3555
3556 static int
3557 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3558                                     struct ieee80211_vif_chanctx_switch *vifs)
3559 {
3560         int ret;
3561
3562         mutex_lock(&mvm->mutex);
3563         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3564
3565         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3566                                            true);
3567         if (ret) {
3568                 IWL_ERR(mvm,
3569                         "failed to assign new_ctx during channel switch\n");
3570                 goto out_reassign;
3571         }
3572
3573         goto out;
3574
3575 out_reassign:
3576         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3577                                          true)) {
3578                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3579                 goto out_restart;
3580         }
3581
3582         goto out;
3583
3584 out_restart:
3585         /* things keep failing, better restart the hw */
3586         iwl_mvm_nic_restart(mvm, false);
3587
3588 out:
3589         mutex_unlock(&mvm->mutex);
3590
3591         return ret;
3592 }
3593
3594 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3595                                       struct ieee80211_vif_chanctx_switch *vifs,
3596                                       int n_vifs,
3597                                       enum ieee80211_chanctx_switch_mode mode)
3598 {
3599         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3600         int ret;
3601
3602         /* we only support a single-vif right now */
3603         if (n_vifs > 1)
3604                 return -EOPNOTSUPP;
3605
3606         switch (mode) {
3607         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3608                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3609                 break;
3610         case CHANCTX_SWMODE_REASSIGN_VIF:
3611                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3612                 break;
3613         default:
3614                 ret = -EOPNOTSUPP;
3615                 break;
3616         }
3617
3618         return ret;
3619 }
3620
3621 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3622                            struct ieee80211_sta *sta,
3623                            bool set)
3624 {
3625         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3626         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3627
3628         if (!mvm_sta || !mvm_sta->vif) {
3629                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3630                 return -EINVAL;
3631         }
3632
3633         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3634 }
3635
3636 #ifdef CONFIG_NL80211_TESTMODE
3637 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3638         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3639         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3640         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3641 };
3642
3643 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3644                                       struct ieee80211_vif *vif,
3645                                       void *data, int len)
3646 {
3647         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3648         int err;
3649         u32 noa_duration;
3650
3651         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3652         if (err)
3653                 return err;
3654
3655         if (!tb[IWL_MVM_TM_ATTR_CMD])
3656                 return -EINVAL;
3657
3658         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3659         case IWL_MVM_TM_CMD_SET_NOA:
3660                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3661                     !vif->bss_conf.enable_beacon ||
3662                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3663                         return -EINVAL;
3664
3665                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3666                 if (noa_duration >= vif->bss_conf.beacon_int)
3667                         return -EINVAL;
3668
3669                 mvm->noa_duration = noa_duration;
3670                 mvm->noa_vif = vif;
3671
3672                 return iwl_mvm_update_quotas(mvm, false, NULL);
3673         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3674                 /* must be associated client vif - ignore authorized */
3675                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3676                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3677                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3678                         return -EINVAL;
3679
3680                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3681                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3682                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3683         }
3684
3685         return -EOPNOTSUPP;
3686 }
3687
3688 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3689                                     struct ieee80211_vif *vif,
3690                                     void *data, int len)
3691 {
3692         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3693         int err;
3694
3695         mutex_lock(&mvm->mutex);
3696         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3697         mutex_unlock(&mvm->mutex);
3698
3699         return err;
3700 }
3701 #endif
3702
3703 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3704                                    struct ieee80211_vif *vif,
3705                                    struct ieee80211_channel_switch *chsw)
3706 {
3707         /* By implementing this operation, we prevent mac80211 from
3708          * starting its own channel switch timer, so that we can call
3709          * ieee80211_chswitch_done() ourselves at the right time
3710          * (which is when the absence time event starts).
3711          */
3712
3713         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3714                            "dummy channel switch op\n");
3715 }
3716
3717 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3718                                       struct ieee80211_vif *vif,
3719                                       struct ieee80211_channel_switch *chsw)
3720 {
3721         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3722         struct ieee80211_vif *csa_vif;
3723         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3724         u32 apply_time;
3725         int ret;
3726
3727         mutex_lock(&mvm->mutex);
3728
3729         mvmvif->csa_failed = false;
3730
3731         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3732                            chsw->chandef.center_freq1);
3733
3734         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3735
3736         switch (vif->type) {
3737         case NL80211_IFTYPE_AP:
3738                 csa_vif =
3739                         rcu_dereference_protected(mvm->csa_vif,
3740                                                   lockdep_is_held(&mvm->mutex));
3741                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3742                               "Another CSA is already in progress")) {
3743                         ret = -EBUSY;
3744                         goto out_unlock;
3745                 }
3746
3747                 rcu_assign_pointer(mvm->csa_vif, vif);
3748
3749                 if (WARN_ONCE(mvmvif->csa_countdown,
3750                               "Previous CSA countdown didn't complete")) {
3751                         ret = -EBUSY;
3752                         goto out_unlock;
3753                 }
3754
3755                 break;
3756         case NL80211_IFTYPE_STATION:
3757                 /* Schedule the time event to a bit before beacon 1,
3758                  * to make sure we're in the new channel when the
3759                  * GO/AP arrives.
3760                  */
3761                 apply_time = chsw->device_timestamp +
3762                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3763                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3764
3765                 if (chsw->block_tx)
3766                         iwl_mvm_csa_client_absent(mvm, vif);
3767
3768                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3769                                             apply_time);
3770                 if (mvmvif->bf_data.bf_enabled) {
3771                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3772                         if (ret)
3773                                 goto out_unlock;
3774                 }
3775
3776                 break;
3777         default:
3778                 break;
3779         }
3780
3781         mvmvif->ps_disabled = true;
3782
3783         ret = iwl_mvm_power_update_ps(mvm);
3784         if (ret)
3785                 goto out_unlock;
3786
3787         /* we won't be on this channel any longer */
3788         iwl_mvm_teardown_tdls_peers(mvm);
3789
3790 out_unlock:
3791         mutex_unlock(&mvm->mutex);
3792
3793         return ret;
3794 }
3795
3796 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3797                                        struct ieee80211_vif *vif)
3798 {
3799         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3800         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3801         int ret;
3802
3803         mutex_lock(&mvm->mutex);
3804
3805         if (mvmvif->csa_failed) {
3806                 mvmvif->csa_failed = false;
3807                 ret = -EIO;
3808                 goto out_unlock;
3809         }
3810
3811         if (vif->type == NL80211_IFTYPE_STATION) {
3812                 struct iwl_mvm_sta *mvmsta;
3813
3814                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3815                                                           mvmvif->ap_sta_id);
3816
3817                 if (WARN_ON(!mvmsta)) {
3818                         ret = -EIO;
3819                         goto out_unlock;
3820                 }
3821
3822                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3823
3824                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3825
3826                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3827                 if (ret)
3828                         goto out_unlock;
3829
3830                 iwl_mvm_stop_session_protection(mvm, vif);
3831         }
3832
3833         mvmvif->ps_disabled = false;
3834
3835         ret = iwl_mvm_power_update_ps(mvm);
3836
3837 out_unlock:
3838         mutex_unlock(&mvm->mutex);
3839
3840         return ret;
3841 }
3842
3843 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3844                               struct ieee80211_vif *vif, u32 queues, bool drop)
3845 {
3846         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3847         struct iwl_mvm_vif *mvmvif;
3848         struct iwl_mvm_sta *mvmsta;
3849         struct ieee80211_sta *sta;
3850         int i;
3851         u32 msk = 0;
3852
3853         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3854                 return;
3855
3856         mutex_lock(&mvm->mutex);
3857         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3858
3859         /* flush the AP-station and all TDLS peers */
3860         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3861                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3862                                                 lockdep_is_held(&mvm->mutex));
3863                 if (IS_ERR_OR_NULL(sta))
3864                         continue;
3865
3866                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3867                 if (mvmsta->vif != vif)
3868                         continue;
3869
3870                 /* make sure only TDLS peers or the AP are flushed */
3871                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3872
3873                 msk |= mvmsta->tfd_queue_msk;
3874         }
3875
3876         if (drop) {
3877                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3878                         IWL_ERR(mvm, "flush request fail\n");
3879                 mutex_unlock(&mvm->mutex);
3880         } else {
3881                 mutex_unlock(&mvm->mutex);
3882
3883                 /* this can take a while, and we may need/want other operations
3884                  * to succeed while doing this, so do it without the mutex held
3885                  */
3886                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3887         }
3888 }
3889
3890 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3891                                   struct survey_info *survey)
3892 {
3893         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3894         int ret;
3895
3896         memset(survey, 0, sizeof(*survey));
3897
3898         /* only support global statistics right now */
3899         if (idx != 0)
3900                 return -ENOENT;
3901
3902         if (!(mvm->fw->ucode_capa.capa[0] &
3903                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3904                 return -ENOENT;
3905
3906         mutex_lock(&mvm->mutex);
3907
3908         if (mvm->ucode_loaded) {
3909                 ret = iwl_mvm_request_statistics(mvm, false);
3910                 if (ret)
3911                         goto out;
3912         }
3913
3914         survey->filled = SURVEY_INFO_TIME |
3915                          SURVEY_INFO_TIME_RX |
3916                          SURVEY_INFO_TIME_TX |
3917                          SURVEY_INFO_TIME_SCAN;
3918         survey->time = mvm->accu_radio_stats.on_time_rf +
3919                        mvm->radio_stats.on_time_rf;
3920         do_div(survey->time, USEC_PER_MSEC);
3921
3922         survey->time_rx = mvm->accu_radio_stats.rx_time +
3923                           mvm->radio_stats.rx_time;
3924         do_div(survey->time_rx, USEC_PER_MSEC);
3925
3926         survey->time_tx = mvm->accu_radio_stats.tx_time +
3927                           mvm->radio_stats.tx_time;
3928         do_div(survey->time_tx, USEC_PER_MSEC);
3929
3930         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3931                             mvm->radio_stats.on_time_scan;
3932         do_div(survey->time_scan, USEC_PER_MSEC);
3933
3934         ret = 0;
3935  out:
3936         mutex_unlock(&mvm->mutex);
3937         return ret;
3938 }
3939
3940 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3941                                        struct ieee80211_vif *vif,
3942                                        struct ieee80211_sta *sta,
3943                                        struct station_info *sinfo)
3944 {
3945         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3946         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3947         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3948
3949         if (!(mvm->fw->ucode_capa.capa[0] &
3950                                 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3951                 return;
3952
3953         /* if beacon filtering isn't on mac80211 does it anyway */
3954         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3955                 return;
3956
3957         if (!vif->bss_conf.assoc)
3958                 return;
3959
3960         mutex_lock(&mvm->mutex);
3961
3962         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3963                 goto unlock;
3964
3965         if (iwl_mvm_request_statistics(mvm, false))
3966                 goto unlock;
3967
3968         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3969                            mvmvif->beacon_stats.accu_num_beacons;
3970         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3971         if (mvmvif->beacon_stats.avg_signal) {
3972                 /* firmware only reports a value after RXing a few beacons */
3973                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3974                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3975         }
3976  unlock:
3977         mutex_unlock(&mvm->mutex);
3978 }
3979
3980 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3981                                        struct ieee80211_vif *vif,
3982                                        const struct ieee80211_event *event)
3983 {
3984 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3985         do {                                                    \
3986                 if ((_cnt) && --(_cnt))                         \
3987                         break;                                  \
3988                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3989         } while (0)
3990
3991         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3992         struct iwl_fw_dbg_trigger_tlv *trig;
3993         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3994
3995         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3996                 return;
3997
3998         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3999         trig_mlme = (void *)trig->data;
4000         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4001                 return;
4002
4003         if (event->u.mlme.data == ASSOC_EVENT) {
4004                 if (event->u.mlme.status == MLME_DENIED)
4005                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4006                                            trig_mlme->stop_assoc_denied,
4007                                            "DENIED ASSOC: reason %d",
4008                                             event->u.mlme.reason);
4009                 else if (event->u.mlme.status == MLME_TIMEOUT)
4010                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4011                                            trig_mlme->stop_assoc_timeout,
4012                                            "ASSOC TIMEOUT");
4013         } else if (event->u.mlme.data == AUTH_EVENT) {
4014                 if (event->u.mlme.status == MLME_DENIED)
4015                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4016                                            trig_mlme->stop_auth_denied,
4017                                            "DENIED AUTH: reason %d",
4018                                            event->u.mlme.reason);
4019                 else if (event->u.mlme.status == MLME_TIMEOUT)
4020                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4021                                            trig_mlme->stop_auth_timeout,
4022                                            "AUTH TIMEOUT");
4023         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4024                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4025                                    trig_mlme->stop_rx_deauth,
4026                                    "DEAUTH RX %d", event->u.mlme.reason);
4027         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4028                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4029                                    trig_mlme->stop_tx_deauth,
4030                                    "DEAUTH TX %d", event->u.mlme.reason);
4031         }
4032 #undef CHECK_MLME_TRIGGER
4033 }
4034
4035 const struct ieee80211_ops iwl_mvm_hw_ops = {
4036         .tx = iwl_mvm_mac_tx,
4037         .ampdu_action = iwl_mvm_mac_ampdu_action,
4038         .start = iwl_mvm_mac_start,
4039         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4040         .stop = iwl_mvm_mac_stop,
4041         .add_interface = iwl_mvm_mac_add_interface,
4042         .remove_interface = iwl_mvm_mac_remove_interface,
4043         .config = iwl_mvm_mac_config,
4044         .prepare_multicast = iwl_mvm_prepare_multicast,
4045         .configure_filter = iwl_mvm_configure_filter,
4046         .bss_info_changed = iwl_mvm_bss_info_changed,
4047         .hw_scan = iwl_mvm_mac_hw_scan,
4048         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4049         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4050         .sta_state = iwl_mvm_mac_sta_state,
4051         .sta_notify = iwl_mvm_mac_sta_notify,
4052         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4053         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4054         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4055         .sta_rc_update = iwl_mvm_sta_rc_update,
4056         .conf_tx = iwl_mvm_mac_conf_tx,
4057         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4058         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4059         .flush = iwl_mvm_mac_flush,
4060         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4061         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4062         .set_key = iwl_mvm_mac_set_key,
4063         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4064         .remain_on_channel = iwl_mvm_roc,
4065         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4066         .add_chanctx = iwl_mvm_add_chanctx,
4067         .remove_chanctx = iwl_mvm_remove_chanctx,
4068         .change_chanctx = iwl_mvm_change_chanctx,
4069         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4070         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4071         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4072
4073         .start_ap = iwl_mvm_start_ap_ibss,
4074         .stop_ap = iwl_mvm_stop_ap_ibss,
4075         .join_ibss = iwl_mvm_start_ap_ibss,
4076         .leave_ibss = iwl_mvm_stop_ap_ibss,
4077
4078         .set_tim = iwl_mvm_set_tim,
4079
4080         .channel_switch = iwl_mvm_channel_switch,
4081         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4082         .post_channel_switch = iwl_mvm_post_channel_switch,
4083
4084         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4085         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4086         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4087
4088         .event_callback = iwl_mvm_mac_event_callback,
4089
4090         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4091
4092 #ifdef CONFIG_PM_SLEEP
4093         /* look at d3.c */
4094         .suspend = iwl_mvm_suspend,
4095         .resume = iwl_mvm_resume,
4096         .set_wakeup = iwl_mvm_set_wakeup,
4097         .set_rekey_data = iwl_mvm_set_rekey_data,
4098 #if IS_ENABLED(CONFIG_IPV6)
4099         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4100 #endif
4101         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4102 #endif
4103         .get_survey = iwl_mvm_mac_get_survey,
4104         .sta_statistics = iwl_mvm_mac_sta_statistics,
4105 };