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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  21  * along with this program; if not, write to the Free Software
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
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  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
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  46  *    the documentation and/or other materials provided with the
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  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 "iwl-phy-db.h"
  84 #include "testmode.h"
  85 #include "iwl-fw-error-dump.h"
  86 #include "iwl-prph.h"
  87 #include "iwl-csr.h"
  88 #include "iwl-nvm-parse.h"
  89
  90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  91         {
  92                 .max = 1,
  93                 .types = BIT(NL80211_IFTYPE_STATION),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_AP) |
  98                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  99                         BIT(NL80211_IFTYPE_P2P_GO),
 100         },
 101         {
 102                 .max = 1,
 103                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 104         },
 105 };
 106
 107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 108         {
 109                 .num_different_channels = 2,
 110                 .max_interfaces = 3,
 111                 .limits = iwl_mvm_limits,
 112                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 113         },
 114 };
 115
 116 #ifdef CONFIG_PM_SLEEP
 117 static const struct nl80211_wowlan_tcp_data_token_feature
 118 iwl_mvm_wowlan_tcp_token_feature = {
 119         .min_len = 0,
 120         .max_len = 255,
 121         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 122 };
 123
 124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 125         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 126         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 127                             sizeof(struct ethhdr) -
 128                             sizeof(struct iphdr) -
 129                             sizeof(struct tcphdr),
 130         .data_interval_max = 65535, /* __le16 in API */
 131         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 132                             sizeof(struct ethhdr) -
 133                             sizeof(struct iphdr) -
 134                             sizeof(struct tcphdr),
 135         .seq = true,
 136 };
 137 #endif
 138
 139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 140 /*
 141  * Use the reserved field to indicate magic values.
 142  * these values will only be used internally by the driver,
 143  * and won't make it to the fw (reserved will be 0).
 144  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 145  *      be the vif's ip address. in case there is not a single
 146  *      ip address (0, or more than 1), this attribute will
 147  *      be skipped.
 148  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 149  *      the LSB bytes of the vif's mac address
 150  */
 151 enum {
 152         BC_FILTER_MAGIC_NONE = 0,
 153         BC_FILTER_MAGIC_IP,
 154         BC_FILTER_MAGIC_MAC,
 155 };
 156
 157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 158         {
 159                 /* arp */
 160                 .discard = 0,
 161                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 162                 .attrs = {
 163                         {
 164                                 /* frame type - arp, hw type - ethernet */
 165                                 .offset_type =
 166                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 167                                 .offset = sizeof(rfc1042_header),
 168                                 .val = cpu_to_be32(0x08060001),
 169                                 .mask = cpu_to_be32(0xffffffff),
 170                         },
 171                         {
 172                                 /* arp dest ip */
 173                                 .offset_type =
 174                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 175                                 .offset = sizeof(rfc1042_header) + 2 +
 176                                           sizeof(struct arphdr) +
 177                                           ETH_ALEN + sizeof(__be32) +
 178                                           ETH_ALEN,
 179                                 .mask = cpu_to_be32(0xffffffff),
 180                                 /* mark it as special field */
 181                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 182                         },
 183                 },
 184         },
 185         {
 186                 /* dhcp offer bcast */
 187                 .discard = 0,
 188                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 189                 .attrs = {
 190                         {
 191                                 /* udp dest port - 68 (bootp client)*/
 192                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 193                                 .offset = offsetof(struct udphdr, dest),
 194                                 .val = cpu_to_be32(0x00440000),
 195                                 .mask = cpu_to_be32(0xffff0000),
 196                         },
 197                         {
 198                                 /* dhcp - lsb bytes of client hw address */
 199                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 200                                 .offset = 38,
 201                                 .mask = cpu_to_be32(0xffffffff),
 202                                 /* mark it as special field */
 203                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 204                         },
 205                 },
 206         },
 207         /* last filter must be empty */
 208         {},
 209 };
 210 #endif
 211
 212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 213 {
 214         if (!iwl_mvm_is_d0i3_supported(mvm))
 215                 return;
 216
 217         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 218         spin_lock_bh(&mvm->refs_lock);
 219         mvm->refs[ref_type]++;
 220         spin_unlock_bh(&mvm->refs_lock);
 221         iwl_trans_ref(mvm->trans);
 222 }
 223
 224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 225 {
 226         if (!iwl_mvm_is_d0i3_supported(mvm))
 227                 return;
 228
 229         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 230         spin_lock_bh(&mvm->refs_lock);
 231         WARN_ON(!mvm->refs[ref_type]--);
 232         spin_unlock_bh(&mvm->refs_lock);
 233         iwl_trans_unref(mvm->trans);
 234 }
 235
 236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 237                                      enum iwl_mvm_ref_type except_ref)
 238 {
 239         int i, j;
 240
 241         if (!iwl_mvm_is_d0i3_supported(mvm))
 242                 return;
 243
 244         spin_lock_bh(&mvm->refs_lock);
 245         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 246                 if (except_ref == i || !mvm->refs[i])
 247                         continue;
 248
 249                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 250                               i, mvm->refs[i]);
 251                 for (j = 0; j < mvm->refs[i]; j++)
 252                         iwl_trans_unref(mvm->trans);
 253                 mvm->refs[i] = 0;
 254         }
 255         spin_unlock_bh(&mvm->refs_lock);
 256 }
 257
 258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 259 {
 260         int i;
 261         bool taken = false;
 262
 263         if (!iwl_mvm_is_d0i3_supported(mvm))
 264                 return true;
 265
 266         spin_lock_bh(&mvm->refs_lock);
 267         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 268                 if (mvm->refs[i]) {
 269                         taken = true;
 270                         break;
 271                 }
 272         }
 273         spin_unlock_bh(&mvm->refs_lock);
 274
 275         return taken;
 276 }
 277
 278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 279 {
 280         iwl_mvm_ref(mvm, ref_type);
 281
 282         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 283                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 284                                 HZ)) {
 285                 WARN_ON_ONCE(1);
 286                 iwl_mvm_unref(mvm, ref_type);
 287                 return -EIO;
 288         }
 289
 290         return 0;
 291 }
 292
 293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 294 {
 295         int i;
 296
 297         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 298         for (i = 0; i < NUM_PHY_CTX; i++) {
 299                 mvm->phy_ctxts[i].id = i;
 300                 mvm->phy_ctxts[i].ref = 0;
 301         }
 302 }
 303
 304 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 305                                                   const char *alpha2,
 306                                                   enum iwl_mcc_source src_id,
 307                                                   bool *changed)
 308 {
 309         struct ieee80211_regdomain *regd = NULL;
 310         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 311         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 312         struct iwl_mcc_update_resp *resp;
 313
 314         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 315
 316         lockdep_assert_held(&mvm->mutex);
 317
 318         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 319         if (IS_ERR_OR_NULL(resp)) {
 320                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 321                               PTR_ERR_OR_ZERO(resp));
 322                 goto out;
 323         }
 324
 325         if (changed)
 326                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 327
 328         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 329                                       __le32_to_cpu(resp->n_channels),
 330                                       resp->channels,
 331                                       __le16_to_cpu(resp->mcc));
 332         /* Store the return source id */
 333         src_id = resp->source_id;
 334         kfree(resp);
 335         if (IS_ERR_OR_NULL(regd)) {
 336                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 337                               PTR_ERR_OR_ZERO(regd));
 338                 goto out;
 339         }
 340
 341         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 342                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 343         mvm->lar_regdom_set = true;
 344         mvm->mcc_src = src_id;
 345
 346 out:
 347         return regd;
 348 }
 349
 350 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 351 {
 352         bool changed;
 353         struct ieee80211_regdomain *regd;
 354
 355         if (!iwl_mvm_is_lar_supported(mvm))
 356                 return;
 357
 358         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 359         if (!IS_ERR_OR_NULL(regd)) {
 360                 /* only update the regulatory core if changed */
 361                 if (changed)
 362                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 363
 364                 kfree(regd);
 365         }
 366 }
 367
 368 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 369                                                           bool *changed)
 370 {
 371         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 372                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 373                                      MCC_SOURCE_GET_CURRENT :
 374                                      MCC_SOURCE_OLD_FW, changed);
 375 }
 376
 377 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 378 {
 379         enum iwl_mcc_source used_src;
 380         struct ieee80211_regdomain *regd;
 381         int ret;
 382         bool changed;
 383         const struct ieee80211_regdomain *r =
 384                         rtnl_dereference(mvm->hw->wiphy->regd);
 385
 386         if (!r)
 387                 return -ENOENT;
 388
 389         /* save the last source in case we overwrite it below */
 390         used_src = mvm->mcc_src;
 391         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 392                 /* Notify the firmware we support wifi location updates */
 393                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 394                 if (!IS_ERR_OR_NULL(regd))
 395                         kfree(regd);
 396         }
 397
 398         /* Now set our last stored MCC and source */
 399         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 400                                      &changed);
 401         if (IS_ERR_OR_NULL(regd))
 402                 return -EIO;
 403
 404         /* update cfg80211 if the regdomain was changed */
 405         if (changed)
 406                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 407         else
 408                 ret = 0;
 409
 410         kfree(regd);
 411         return ret;
 412 }
 413
 414 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 415 {
 416         struct ieee80211_hw *hw = mvm->hw;
 417         int num_mac, ret, i;
 418
 419         /* Tell mac80211 our characteristics */
 420         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 421                     IEEE80211_HW_SPECTRUM_MGMT |
 422                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 423                     IEEE80211_HW_QUEUE_CONTROL |
 424                     IEEE80211_HW_WANT_MONITOR_VIF |
 425                     IEEE80211_HW_SUPPORTS_PS |
 426                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 427                     IEEE80211_HW_AMPDU_AGGREGATION |
 428                     IEEE80211_HW_TIMING_BEACON_ONLY |
 429                     IEEE80211_HW_CONNECTION_MONITOR |
 430                     IEEE80211_HW_CHANCTX_STA_CSA |
 431                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 432
 433         hw->queues = mvm->first_agg_queue;
 434         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 435         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 436                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 437         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 438                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 439         hw->rate_control_algorithm = "iwl-mvm-rs";
 440         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 441         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 442
 443         /*
 444          * Enable 11w if advertised by firmware and software crypto
 445          * is not enabled (as the firmware will interpret some mgmt
 446          * packets, so enabling it with software crypto isn't safe)
 447          */
 448         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 449             !iwlwifi_mod_params.sw_crypto)
 450                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 451
 452         hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 453         hw->wiphy->features |=
 454                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 455                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 456                 NL80211_FEATURE_ND_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);
 510
 511         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 512
 513         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 514         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 515                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 516
 517         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
 518                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 519         else
 520                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 521
 522         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 523                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 524                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 525         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 526                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 527                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 528
 529                 if ((mvm->fw->ucode_capa.capa[0] &
 530                      IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 531                     (mvm->fw->ucode_capa.api[0] &
 532                      IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 533                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 534                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 535         }
 536
 537         hw->wiphy->hw_version = mvm->trans->hw_id;
 538
 539         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 540                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 541         else
 542                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 543
 544         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 545         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 546         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 547         /* we create the 802.11 header and zero length SSID IE. */
 548         hw->wiphy->max_sched_scan_ie_len =
 549                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 550
 551         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 552                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 553                                NL80211_FEATURE_P2P_GO_OPPPS |
 554                                NL80211_FEATURE_DYNAMIC_SMPS |
 555                                NL80211_FEATURE_STATIC_SMPS |
 556                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 557
 558         if (mvm->fw->ucode_capa.capa[0] &
 559             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 560                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 561         if (mvm->fw->ucode_capa.capa[0] &
 562             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 563                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 564
 565         if (mvm->fw->ucode_capa.capa[0] &
 566             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 567                 hw->wiphy->features |=
 568                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 569
 570         if (mvm->fw->ucode_capa.capa[0] &
 571             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 572                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 573
 574         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 575
 576         /* currently FW API supports only one optional cipher scheme */
 577         if (mvm->fw->cs[0].cipher) {
 578                 mvm->hw->n_cipher_schemes = 1;
 579                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 580         }
 581
 582 #ifdef CONFIG_PM_SLEEP
 583         if (iwl_mvm_is_d0i3_supported(mvm) &&
 584             device_can_wakeup(mvm->trans->dev)) {
 585                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 586                 hw->wiphy->wowlan = &mvm->wowlan;
 587         }
 588
 589         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 590             mvm->trans->ops->d3_suspend &&
 591             mvm->trans->ops->d3_resume &&
 592             device_can_wakeup(mvm->trans->dev)) {
 593                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 594                                      WIPHY_WOWLAN_DISCONNECT |
 595                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 596                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 597                                      WIPHY_WOWLAN_NET_DETECT;
 598                 if (!iwlwifi_mod_params.sw_crypto)
 599                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 600                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 601                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 602
 603                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 604                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 605                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 606                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 607                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 608                 hw->wiphy->wowlan = &mvm->wowlan;
 609         }
 610 #endif
 611
 612 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 613         /* assign default bcast filtering configuration */
 614         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 615 #endif
 616
 617         ret = iwl_mvm_leds_init(mvm);
 618         if (ret)
 619                 return ret;
 620
 621         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 622                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 623                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 624         }
 625
 626         if (mvm->fw->ucode_capa.capa[0] &
 627             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 628                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 629                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 630         }
 631
 632         ret = ieee80211_register_hw(mvm->hw);
 633         if (ret)
 634                 iwl_mvm_leds_exit(mvm);
 635
 636         return ret;
 637 }
 638
 639 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 640                              struct ieee80211_sta *sta,
 641                              struct sk_buff *skb)
 642 {
 643         struct iwl_mvm_sta *mvmsta;
 644         bool defer = false;
 645
 646         /*
 647          * double check the IN_D0I3 flag both before and after
 648          * taking the spinlock, in order to prevent taking
 649          * the spinlock when not needed.
 650          */
 651         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 652                 return false;
 653
 654         spin_lock(&mvm->d0i3_tx_lock);
 655         /*
 656          * testing the flag again ensures the skb dequeue
 657          * loop (on d0i3 exit) hasn't run yet.
 658          */
 659         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 660                 goto out;
 661
 662         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 663         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 664             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 665                 goto out;
 666
 667         __skb_queue_tail(&mvm->d0i3_tx, skb);
 668         ieee80211_stop_queues(mvm->hw);
 669
 670         /* trigger wakeup */
 671         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 672         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 673
 674         defer = true;
 675 out:
 676         spin_unlock(&mvm->d0i3_tx_lock);
 677         return defer;
 678 }
 679
 680 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 681                            struct ieee80211_tx_control *control,
 682                            struct sk_buff *skb)
 683 {
 684         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 685         struct ieee80211_sta *sta = control->sta;
 686         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 687         struct ieee80211_hdr *hdr = (void *)skb->data;
 688
 689         if (iwl_mvm_is_radio_killed(mvm)) {
 690                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 691                 goto drop;
 692         }
 693
 694         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 695             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 696             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 697                 goto drop;
 698
 699         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 700         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 701                      ieee80211_is_mgmt(hdr->frame_control) &&
 702                      !ieee80211_is_deauth(hdr->frame_control) &&
 703                      !ieee80211_is_disassoc(hdr->frame_control) &&
 704                      !ieee80211_is_action(hdr->frame_control)))
 705                 sta = NULL;
 706
 707         if (sta) {
 708                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 709                         return;
 710                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 711                         goto drop;
 712                 return;
 713         }
 714
 715         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 716                 goto drop;
 717         return;
 718  drop:
 719         ieee80211_free_txskb(hw, skb);
 720 }
 721
 722 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 723 {
 724         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 725                 return false;
 726         return true;
 727 }
 728
 729 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 730 {
 731         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 732                 return false;
 733         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 734                 return true;
 735
 736         /* enabled by default */
 737         return true;
 738 }
 739
 740 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 741                                     struct ieee80211_vif *vif,
 742                                     enum ieee80211_ampdu_mlme_action action,
 743                                     struct ieee80211_sta *sta, u16 tid,
 744                                     u16 *ssn, u8 buf_size)
 745 {
 746         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 747         int ret;
 748         bool tx_agg_ref = false;
 749
 750         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 751                      sta->addr, tid, action);
 752
 753         if (!(mvm->nvm_data->sku_cap_11n_enable))
 754                 return -EACCES;
 755
 756         /* return from D0i3 before starting a new Tx aggregation */
 757         switch (action) {
 758         case IEEE80211_AMPDU_TX_START:
 759         case IEEE80211_AMPDU_TX_STOP_CONT:
 760         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 761         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 762         case IEEE80211_AMPDU_TX_OPERATIONAL:
 763                 /*
 764                  * for tx start, wait synchronously until D0i3 exit to
 765                  * get the correct sequence number for the tid.
 766                  * additionally, some other ampdu actions use direct
 767                  * target access, which is not handled automatically
 768                  * by the trans layer (unlike commands), so wait for
 769                  * d0i3 exit in these cases as well.
 770                  */
 771                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 772                 if (ret)
 773                         return ret;
 774
 775                 tx_agg_ref = true;
 776                 break;
 777         default:
 778                 break;
 779         }
 780
 781         mutex_lock(&mvm->mutex);
 782
 783         switch (action) {
 784         case IEEE80211_AMPDU_RX_START:
 785                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 786                         ret = -EINVAL;
 787                         break;
 788                 }
 789                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 790                 break;
 791         case IEEE80211_AMPDU_RX_STOP:
 792                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 793                 break;
 794         case IEEE80211_AMPDU_TX_START:
 795                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 796                         ret = -EINVAL;
 797                         break;
 798                 }
 799                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 800                 break;
 801         case IEEE80211_AMPDU_TX_STOP_CONT:
 802                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 803                 break;
 804         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 805         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 806                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 807                 break;
 808         case IEEE80211_AMPDU_TX_OPERATIONAL:
 809                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 810                 break;
 811         default:
 812                 WARN_ON_ONCE(1);
 813                 ret = -EINVAL;
 814                 break;
 815         }
 816         mutex_unlock(&mvm->mutex);
 817
 818         /*
 819          * If the tid is marked as started, we won't use it for offloaded
 820          * traffic on the next D0i3 entry. It's safe to unref.
 821          */
 822         if (tx_agg_ref)
 823                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 824
 825         return ret;
 826 }
 827
 828 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 829                                      struct ieee80211_vif *vif)
 830 {
 831         struct iwl_mvm *mvm = data;
 832         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 833
 834         mvmvif->uploaded = false;
 835         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 836
 837         spin_lock_bh(&mvm->time_event_lock);
 838         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 839         spin_unlock_bh(&mvm->time_event_lock);
 840
 841         mvmvif->phy_ctxt = NULL;
 842         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 843 }
 844
 845 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 846                                      const void *data, size_t datalen)
 847 {
 848         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 849         ssize_t bytes_read;
 850         ssize_t bytes_read_trans;
 851
 852         if (offset < dump_ptrs->op_mode_len) {
 853                 bytes_read = min_t(ssize_t, count,
 854                                    dump_ptrs->op_mode_len - offset);
 855                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 856                        bytes_read);
 857                 offset += bytes_read;
 858                 count -= bytes_read;
 859
 860                 if (count == 0)
 861                         return bytes_read;
 862         } else {
 863                 bytes_read = 0;
 864         }
 865
 866         if (!dump_ptrs->trans_ptr)
 867                 return bytes_read;
 868
 869         offset -= dump_ptrs->op_mode_len;
 870         bytes_read_trans = min_t(ssize_t, count,
 871                                  dump_ptrs->trans_ptr->len - offset);
 872         memcpy(buffer + bytes_read,
 873                (u8 *)dump_ptrs->trans_ptr->data + offset,
 874                bytes_read_trans);
 875
 876         return bytes_read + bytes_read_trans;
 877 }
 878
 879 static void iwl_mvm_free_coredump(const void *data)
 880 {
 881         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 882
 883         vfree(fw_error_dump->op_mode_ptr);
 884         vfree(fw_error_dump->trans_ptr);
 885         kfree(fw_error_dump);
 886 }
 887
 888 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
 889                                struct iwl_fw_error_dump_data **dump_data)
 890 {
 891         struct iwl_fw_error_dump_fifo *fifo_hdr;
 892         u32 *fifo_data;
 893         u32 fifo_len;
 894         unsigned long flags;
 895         int i, j;
 896
 897         if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
 898                 return;
 899
 900         /* Pull RXF data from all RXFs */
 901         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
 902                 /*
 903                  * Keep aside the additional offset that might be needed for
 904                  * next RXF
 905                  */
 906                 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
 907
 908                 fifo_hdr = (void *)(*dump_data)->data;
 909                 fifo_data = (void *)fifo_hdr->data;
 910                 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
 911
 912                 /* No need to try to read the data if the length is 0 */
 913                 if (fifo_len == 0)
 914                         continue;
 915
 916                 /* Add a TLV for the RXF */
 917                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 918                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 919
 920                 fifo_hdr->fifo_num = cpu_to_le32(i);
 921                 fifo_hdr->available_bytes =
 922                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 923                                                         RXF_RD_D_SPACE +
 924                                                         offset_diff));
 925                 fifo_hdr->wr_ptr =
 926                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 927                                                         RXF_RD_WR_PTR +
 928                                                         offset_diff));
 929                 fifo_hdr->rd_ptr =
 930                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 931                                                         RXF_RD_RD_PTR +
 932                                                         offset_diff));
 933                 fifo_hdr->fence_ptr =
 934                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 935                                                         RXF_RD_FENCE_PTR +
 936                                                         offset_diff));
 937                 fifo_hdr->fence_mode =
 938                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 939                                                         RXF_SET_FENCE_MODE +
 940                                                         offset_diff));
 941
 942                 /* Lock fence */
 943                 iwl_trans_write_prph(mvm->trans,
 944                                      RXF_SET_FENCE_MODE + offset_diff, 0x1);
 945                 /* Set fence pointer to the same place like WR pointer */
 946                 iwl_trans_write_prph(mvm->trans,
 947                                      RXF_LD_WR2FENCE + offset_diff, 0x1);
 948                 /* Set fence offset */
 949                 iwl_trans_write_prph(mvm->trans,
 950                                      RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
 951                                      0x0);
 952
 953                 /* Read FIFO */
 954                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 955                 for (j = 0; j < fifo_len; j++)
 956                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 957                                                          RXF_FIFO_RD_FENCE_INC +
 958                                                          offset_diff);
 959                 *dump_data = iwl_fw_error_next_data(*dump_data);
 960         }
 961
 962         /* Pull TXF data from all TXFs */
 963         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
 964                 /* Mark the number of TXF we're pulling now */
 965                 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
 966
 967                 fifo_hdr = (void *)(*dump_data)->data;
 968                 fifo_data = (void *)fifo_hdr->data;
 969                 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
 970
 971                 /* No need to try to read the data if the length is 0 */
 972                 if (fifo_len == 0)
 973                         continue;
 974
 975                 /* Add a TLV for the FIFO */
 976                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
 977                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 978
 979                 fifo_hdr->fifo_num = cpu_to_le32(i);
 980                 fifo_hdr->available_bytes =
 981                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 982                                                         TXF_FIFO_ITEM_CNT));
 983                 fifo_hdr->wr_ptr =
 984                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 985                                                         TXF_WR_PTR));
 986                 fifo_hdr->rd_ptr =
 987                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 988                                                         TXF_RD_PTR));
 989                 fifo_hdr->fence_ptr =
 990                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 991                                                         TXF_FENCE_PTR));
 992                 fifo_hdr->fence_mode =
 993                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 994                                                         TXF_LOCK_FENCE));
 995
 996                 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
 997                 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
 998                                      TXF_WR_PTR);
 999
1000                 /* Dummy-read to advance the read pointer to the head */
1001                 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1002
1003                 /* Read FIFO */
1004                 fifo_len /= sizeof(u32); /* Size in DWORDS */
1005                 for (j = 0; j < fifo_len; j++)
1006                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1007                                                           TXF_READ_MODIFY_DATA);
1008                 *dump_data = iwl_fw_error_next_data(*dump_data);
1009         }
1010
1011         iwl_trans_release_nic_access(mvm->trans, &flags);
1012 }
1013
1014 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1015 {
1016         if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1017             !mvm->fw_dump_desc)
1018                 return;
1019
1020         kfree(mvm->fw_dump_desc);
1021         mvm->fw_dump_desc = NULL;
1022 }
1023
1024 #define IWL8260_ICCM_OFFSET             0x44000 /* Only for B-step */
1025 #define IWL8260_ICCM_LEN                0xC000 /* Only for B-step */
1026
1027 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1028 {
1029         struct iwl_fw_error_dump_file *dump_file;
1030         struct iwl_fw_error_dump_data *dump_data;
1031         struct iwl_fw_error_dump_info *dump_info;
1032         struct iwl_fw_error_dump_mem *dump_mem;
1033         struct iwl_fw_error_dump_trigger_desc *dump_trig;
1034         struct iwl_mvm_dump_ptrs *fw_error_dump;
1035         u32 sram_len, sram_ofs;
1036         u32 file_len, fifo_data_len = 0;
1037         u32 smem_len = mvm->cfg->smem_len;
1038         u32 sram2_len = mvm->cfg->dccm2_len;
1039
1040         lockdep_assert_held(&mvm->mutex);
1041
1042         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1043         if (!fw_error_dump)
1044                 return;
1045
1046         /* SRAM - include stack CCM if driver knows the values for it */
1047         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1048                 const struct fw_img *img;
1049
1050                 img = &mvm->fw->img[mvm->cur_ucode];
1051                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1052                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1053         } else {
1054                 sram_ofs = mvm->cfg->dccm_offset;
1055                 sram_len = mvm->cfg->dccm_len;
1056         }
1057
1058         /* reading RXF/TXF sizes */
1059         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1060                 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1061                 int i;
1062
1063                 fifo_data_len = 0;
1064
1065                 /* Count RXF size */
1066                 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1067                         if (!mem_cfg->rxfifo_size[i])
1068                                 continue;
1069
1070                         /* Add header info */
1071                         fifo_data_len += mem_cfg->rxfifo_size[i] +
1072                                          sizeof(*dump_data) +
1073                                          sizeof(struct iwl_fw_error_dump_fifo);
1074                 }
1075
1076                 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1077                         if (!mem_cfg->txfifo_size[i])
1078                                 continue;
1079
1080                         /* Add header info */
1081                         fifo_data_len += mem_cfg->txfifo_size[i] +
1082                                          sizeof(*dump_data) +
1083                                          sizeof(struct iwl_fw_error_dump_fifo);
1084                 }
1085         }
1086
1087         file_len = sizeof(*dump_file) +
1088                    sizeof(*dump_data) * 2 +
1089                    sram_len + sizeof(*dump_mem) +
1090                    fifo_data_len +
1091                    sizeof(*dump_info);
1092
1093         /*
1094          * In 8000 HW family B-step include the ICCM (which resides separately)
1095          */
1096         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1097             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1098                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1099                             IWL8260_ICCM_LEN;
1100
1101         if (mvm->fw_dump_desc)
1102                 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1103                             mvm->fw_dump_desc->len;
1104
1105         /* Make room for the SMEM, if it exists */
1106         if (smem_len)
1107                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1108
1109         /* Make room for the secondary SRAM, if it exists */
1110         if (sram2_len)
1111                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1112
1113         dump_file = vzalloc(file_len);
1114         if (!dump_file) {
1115                 kfree(fw_error_dump);
1116                 iwl_mvm_free_fw_dump_desc(mvm);
1117                 return;
1118         }
1119
1120         fw_error_dump->op_mode_ptr = dump_file;
1121
1122         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1123         dump_data = (void *)dump_file->data;
1124
1125         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1126         dump_data->len = cpu_to_le32(sizeof(*dump_info));
1127         dump_info = (void *) dump_data->data;
1128         dump_info->device_family =
1129                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1130                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1131                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1132         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1133         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1134                sizeof(dump_info->fw_human_readable));
1135         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1136                 sizeof(dump_info->dev_human_readable));
1137         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1138                 sizeof(dump_info->bus_human_readable));
1139
1140         dump_data = iwl_fw_error_next_data(dump_data);
1141         /* We only dump the FIFOs if the FW is in error state */
1142         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1143                 iwl_mvm_dump_fifos(mvm, &dump_data);
1144
1145         if (mvm->fw_dump_desc) {
1146                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1147                 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1148                                              mvm->fw_dump_desc->len);
1149                 dump_trig = (void *)dump_data->data;
1150                 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1151                        sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1152
1153                 /* now we can free this copy */
1154                 iwl_mvm_free_fw_dump_desc(mvm);
1155                 dump_data = iwl_fw_error_next_data(dump_data);
1156         }
1157
1158         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1159         dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1160         dump_mem = (void *)dump_data->data;
1161         dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1162         dump_mem->offset = cpu_to_le32(sram_ofs);
1163         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1164                                  sram_len);
1165
1166         if (smem_len) {
1167                 dump_data = iwl_fw_error_next_data(dump_data);
1168                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1169                 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1170                 dump_mem = (void *)dump_data->data;
1171                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1172                 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1173                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1174                                          dump_mem->data, smem_len);
1175         }
1176
1177         if (sram2_len) {
1178                 dump_data = iwl_fw_error_next_data(dump_data);
1179                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1180                 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1181                 dump_mem = (void *)dump_data->data;
1182                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1183                 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1184                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1185                                          dump_mem->data, sram2_len);
1186         }
1187
1188         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1189             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1190                 dump_data = iwl_fw_error_next_data(dump_data);
1191                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1192                 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1193                                              sizeof(*dump_mem));
1194                 dump_mem = (void *)dump_data->data;
1195                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1196                 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1197                 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1198                                          dump_mem->data, IWL8260_ICCM_LEN);
1199         }
1200
1201         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1202         fw_error_dump->op_mode_len = file_len;
1203         if (fw_error_dump->trans_ptr)
1204                 file_len += fw_error_dump->trans_ptr->len;
1205         dump_file->file_len = cpu_to_le32(file_len);
1206
1207         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1208                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1209
1210         clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1211 }
1212
1213 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1214         .trig_desc = {
1215                 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1216         },
1217 };
1218
1219 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1220 {
1221         /* clear the D3 reconfig, we only need it to avoid dumping a
1222          * firmware coredump on reconfiguration, we shouldn't do that
1223          * on D3->D0 transition
1224          */
1225         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1226                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1227                 iwl_mvm_fw_error_dump(mvm);
1228         }
1229
1230         /* cleanup all stale references (scan, roc), but keep the
1231          * ucode_down ref until reconfig is complete
1232          */
1233         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1234
1235         iwl_trans_stop_device(mvm->trans);
1236
1237         mvm->scan_status = 0;
1238         mvm->ps_disabled = false;
1239         mvm->calibrating = false;
1240
1241         /* just in case one was running */
1242         ieee80211_remain_on_channel_expired(mvm->hw);
1243
1244         /*
1245          * cleanup all interfaces, even inactive ones, as some might have
1246          * gone down during the HW restart
1247          */
1248         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1249
1250         mvm->p2p_device_vif = NULL;
1251         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1252
1253         iwl_mvm_reset_phy_ctxts(mvm);
1254         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1255         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1256         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1257         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1258         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1259         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1260         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1261         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1262
1263         ieee80211_wake_queues(mvm->hw);
1264
1265         /* clear any stale d0i3 state */
1266         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1267
1268         mvm->vif_count = 0;
1269         mvm->rx_ba_sessions = 0;
1270         mvm->fw_dbg_conf = FW_DBG_INVALID;
1271
1272         /* keep statistics ticking */
1273         iwl_mvm_accu_radio_stats(mvm);
1274 }
1275
1276 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1277 {
1278         int ret;
1279
1280         lockdep_assert_held(&mvm->mutex);
1281
1282         /* Clean up some internal and mac80211 state on restart */
1283         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1284                 iwl_mvm_restart_cleanup(mvm);
1285
1286         ret = iwl_mvm_up(mvm);
1287
1288         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1289                 /* Something went wrong - we need to finish some cleanup
1290                  * that normally iwl_mvm_mac_restart_complete() below
1291                  * would do.
1292                  */
1293                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1294                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1295         }
1296
1297         return ret;
1298 }
1299
1300 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1301 {
1302         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1303         int ret;
1304
1305         /* Some hw restart cleanups must not hold the mutex */
1306         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1307                 /*
1308                  * Make sure we are out of d0i3. This is needed
1309                  * to make sure the reference accounting is correct
1310                  * (and there is no stale d0i3_exit_work).
1311                  */
1312                 wait_event_timeout(mvm->d0i3_exit_waitq,
1313                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1314                                              &mvm->status),
1315                                    HZ);
1316         }
1317
1318         mutex_lock(&mvm->mutex);
1319         ret = __iwl_mvm_mac_start(mvm);
1320         mutex_unlock(&mvm->mutex);
1321
1322         return ret;
1323 }
1324
1325 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1326 {
1327         int ret;
1328
1329         mutex_lock(&mvm->mutex);
1330
1331         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1332         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1333         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1334         if (ret)
1335                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1336                         ret);
1337
1338         /* allow transport/FW low power modes */
1339         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1340
1341         /*
1342          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1343          * of packets the FW sent out, so we must reconnect.
1344          */
1345         iwl_mvm_teardown_tdls_peers(mvm);
1346
1347         mutex_unlock(&mvm->mutex);
1348 }
1349
1350 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1351 {
1352         bool exit_now;
1353
1354         if (!iwl_mvm_is_d0i3_supported(mvm))
1355                 return;
1356
1357         mutex_lock(&mvm->d0i3_suspend_mutex);
1358         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1359         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1360                                         &mvm->d0i3_suspend_flags);
1361         mutex_unlock(&mvm->d0i3_suspend_mutex);
1362
1363         if (exit_now) {
1364                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1365                 _iwl_mvm_exit_d0i3(mvm);
1366         }
1367
1368         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1369                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1370                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1371                                                   &mvm->status),
1372                                         HZ))
1373                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1374 }
1375
1376 static void
1377 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1378                               enum ieee80211_reconfig_type reconfig_type)
1379 {
1380         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1381
1382         switch (reconfig_type) {
1383         case IEEE80211_RECONFIG_TYPE_RESTART:
1384                 iwl_mvm_restart_complete(mvm);
1385                 break;
1386         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1387                 iwl_mvm_resume_complete(mvm);
1388                 break;
1389         }
1390 }
1391
1392 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1393 {
1394         lockdep_assert_held(&mvm->mutex);
1395
1396         /* firmware counters are obviously reset now, but we shouldn't
1397          * partially track so also clear the fw_reset_accu counters.
1398          */
1399         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1400
1401         /*
1402          * Disallow low power states when the FW is down by taking
1403          * the UCODE_DOWN ref. in case of ongoing hw restart the
1404          * ref is already taken, so don't take it again.
1405          */
1406         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1407                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1408
1409         /* async_handlers_wk is now blocked */
1410
1411         /*
1412          * The work item could be running or queued if the
1413          * ROC time event stops just as we get here.
1414          */
1415         flush_work(&mvm->roc_done_wk);
1416
1417         iwl_trans_stop_device(mvm->trans);
1418
1419         iwl_mvm_async_handlers_purge(mvm);
1420         /* async_handlers_list is empty and will stay empty: HW is stopped */
1421
1422         /* the fw is stopped, the aux sta is dead: clean up driver state */
1423         iwl_mvm_del_aux_sta(mvm);
1424
1425         /*
1426          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1427          * won't be called in this case).
1428          */
1429         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1430
1431         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1432          * make sure there's nothing left there and warn if any is found.
1433          */
1434         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
1435                 int i;
1436
1437                 for (i = 0; i < mvm->max_scans; i++) {
1438                         if (WARN_ONCE(mvm->scan_uid_status[i],
1439                                       "UMAC scan UID %d status was not cleaned\n",
1440                                       i))
1441                                 mvm->scan_uid_status[i] = 0;
1442                 }
1443         }
1444
1445         mvm->ucode_loaded = false;
1446 }
1447
1448 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1449 {
1450         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1451
1452         flush_work(&mvm->d0i3_exit_work);
1453         flush_work(&mvm->async_handlers_wk);
1454         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1455         iwl_mvm_free_fw_dump_desc(mvm);
1456
1457         mutex_lock(&mvm->mutex);
1458         __iwl_mvm_mac_stop(mvm);
1459         mutex_unlock(&mvm->mutex);
1460
1461         /*
1462          * The worker might have been waiting for the mutex, let it run and
1463          * discover that its list is now empty.
1464          */
1465         cancel_work_sync(&mvm->async_handlers_wk);
1466 }
1467
1468 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1469 {
1470         u16 i;
1471
1472         lockdep_assert_held(&mvm->mutex);
1473
1474         for (i = 0; i < NUM_PHY_CTX; i++)
1475                 if (!mvm->phy_ctxts[i].ref)
1476                         return &mvm->phy_ctxts[i];
1477
1478         IWL_ERR(mvm, "No available PHY context\n");
1479         return NULL;
1480 }
1481
1482 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1483                                     struct ieee80211_vif *vif, s8 tx_power)
1484 {
1485         /* FW is in charge of regulatory enforcement */
1486         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1487                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1488                 .pwr_restriction = cpu_to_le16(tx_power),
1489         };
1490
1491         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1492                                     sizeof(reduce_txpwr_cmd),
1493                                     &reduce_txpwr_cmd);
1494 }
1495
1496 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1497                                 s16 tx_power)
1498 {
1499         struct iwl_dev_tx_power_cmd cmd = {
1500                 .set_mode = 0,
1501                 .mac_context_id =
1502                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1503                 .pwr_restriction = cpu_to_le16(8 * tx_power),
1504         };
1505
1506         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_TX_POWER_DEV))
1507                 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1508
1509         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1510                 cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1511
1512         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1513                                     sizeof(cmd), &cmd);
1514 }
1515
1516 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1517                                      struct ieee80211_vif *vif)
1518 {
1519         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1520         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1521         int ret;
1522
1523         mvmvif->mvm = mvm;
1524
1525         /*
1526          * make sure D0i3 exit is completed, otherwise a target access
1527          * during tx queue configuration could be done when still in
1528          * D0i3 state.
1529          */
1530         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1531         if (ret)
1532                 return ret;
1533
1534         /*
1535          * Not much to do here. The stack will not allow interface
1536          * types or combinations that we didn't advertise, so we
1537          * don't really have to check the types.
1538          */
1539
1540         mutex_lock(&mvm->mutex);
1541
1542         /* make sure that beacon statistics don't go backwards with FW reset */
1543         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1544                 mvmvif->beacon_stats.accu_num_beacons +=
1545                         mvmvif->beacon_stats.num_beacons;
1546
1547         /* Allocate resources for the MAC context, and add it to the fw  */
1548         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1549         if (ret)
1550                 goto out_unlock;
1551
1552         /* Counting number of interfaces is needed for legacy PM */
1553         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1554                 mvm->vif_count++;
1555
1556         /*
1557          * The AP binding flow can be done only after the beacon
1558          * template is configured (which happens only in the mac80211
1559          * start_ap() flow), and adding the broadcast station can happen
1560          * only after the binding.
1561          * In addition, since modifying the MAC before adding a bcast
1562          * station is not allowed by the FW, delay the adding of MAC context to
1563          * the point where we can also add the bcast station.
1564          * In short: there's not much we can do at this point, other than
1565          * allocating resources :)
1566          */
1567         if (vif->type == NL80211_IFTYPE_AP ||
1568             vif->type == NL80211_IFTYPE_ADHOC) {
1569                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1570                 if (ret) {
1571                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1572                         goto out_release;
1573                 }
1574
1575                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1576                 goto out_unlock;
1577         }
1578
1579         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1580         if (ret)
1581                 goto out_release;
1582
1583         ret = iwl_mvm_power_update_mac(mvm);
1584         if (ret)
1585                 goto out_remove_mac;
1586
1587         /* beacon filtering */
1588         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1589         if (ret)
1590                 goto out_remove_mac;
1591
1592         if (!mvm->bf_allowed_vif &&
1593             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1594                 mvm->bf_allowed_vif = mvmvif;
1595                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1596                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1597         }
1598
1599         /*
1600          * P2P_DEVICE interface does not have a channel context assigned to it,
1601          * so a dedicated PHY context is allocated to it and the corresponding
1602          * MAC context is bound to it at this stage.
1603          */
1604         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1605
1606                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1607                 if (!mvmvif->phy_ctxt) {
1608                         ret = -ENOSPC;
1609                         goto out_free_bf;
1610                 }
1611
1612                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1613                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1614                 if (ret)
1615                         goto out_unref_phy;
1616
1617                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1618                 if (ret)
1619                         goto out_unbind;
1620
1621                 /* Save a pointer to p2p device vif, so it can later be used to
1622                  * update the p2p device MAC when a GO is started/stopped */
1623                 mvm->p2p_device_vif = vif;
1624         }
1625
1626         iwl_mvm_vif_dbgfs_register(mvm, vif);
1627         goto out_unlock;
1628
1629  out_unbind:
1630         iwl_mvm_binding_remove_vif(mvm, vif);
1631  out_unref_phy:
1632         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1633  out_free_bf:
1634         if (mvm->bf_allowed_vif == mvmvif) {
1635                 mvm->bf_allowed_vif = NULL;
1636                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1637                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1638         }
1639  out_remove_mac:
1640         mvmvif->phy_ctxt = NULL;
1641         iwl_mvm_mac_ctxt_remove(mvm, vif);
1642  out_release:
1643         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1644                 mvm->vif_count--;
1645
1646         iwl_mvm_mac_ctxt_release(mvm, vif);
1647  out_unlock:
1648         mutex_unlock(&mvm->mutex);
1649
1650         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1651
1652         return ret;
1653 }
1654
1655 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1656                                         struct ieee80211_vif *vif)
1657 {
1658         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1659
1660         if (tfd_msk) {
1661                 /*
1662                  * mac80211 first removes all the stations of the vif and
1663                  * then removes the vif. When it removes a station it also
1664                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1665                  * of all the stations of this vif are closed, and the queues
1666                  * of these AMPDU sessions are properly closed.
1667                  * We still need to take care of the shared queues of the vif.
1668                  * Flush them here.
1669                  */
1670                 mutex_lock(&mvm->mutex);
1671                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1672                 mutex_unlock(&mvm->mutex);
1673
1674                 /*
1675                  * There are transports that buffer a few frames in the host.
1676                  * For these, the flush above isn't enough since while we were
1677                  * flushing, the transport might have sent more frames to the
1678                  * device. To solve this, wait here until the transport is
1679                  * empty. Technically, this could have replaced the flush
1680                  * above, but flush is much faster than draining. So flush
1681                  * first, and drain to make sure we have no frames in the
1682                  * transport anymore.
1683                  * If a station still had frames on the shared queues, it is
1684                  * already marked as draining, so to complete the draining, we
1685                  * just need to wait until the transport is empty.
1686                  */
1687                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1688         }
1689
1690         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1691                 /*
1692                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1693                  * We assume here that all the packets sent to the OFFCHANNEL
1694                  * queue are sent in ROC session.
1695                  */
1696                 flush_work(&mvm->roc_done_wk);
1697         } else {
1698                 /*
1699                  * By now, all the AC queues are empty. The AGG queues are
1700                  * empty too. We already got all the Tx responses for all the
1701                  * packets in the queues. The drain work can have been
1702                  * triggered. Flush it.
1703                  */
1704                 flush_work(&mvm->sta_drained_wk);
1705         }
1706 }
1707
1708 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1709                                          struct ieee80211_vif *vif)
1710 {
1711         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1712         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1713
1714         iwl_mvm_prepare_mac_removal(mvm, vif);
1715
1716         mutex_lock(&mvm->mutex);
1717
1718         if (mvm->bf_allowed_vif == mvmvif) {
1719                 mvm->bf_allowed_vif = NULL;
1720                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1721                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1722         }
1723
1724         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1725
1726         /*
1727          * For AP/GO interface, the tear down of the resources allocated to the
1728          * interface is be handled as part of the stop_ap flow.
1729          */
1730         if (vif->type == NL80211_IFTYPE_AP ||
1731             vif->type == NL80211_IFTYPE_ADHOC) {
1732 #ifdef CONFIG_NL80211_TESTMODE
1733                 if (vif == mvm->noa_vif) {
1734                         mvm->noa_vif = NULL;
1735                         mvm->noa_duration = 0;
1736                 }
1737 #endif
1738                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1739                 goto out_release;
1740         }
1741
1742         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1743                 mvm->p2p_device_vif = NULL;
1744                 iwl_mvm_rm_bcast_sta(mvm, vif);
1745                 iwl_mvm_binding_remove_vif(mvm, vif);
1746                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1747                 mvmvif->phy_ctxt = NULL;
1748         }
1749
1750         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1751                 mvm->vif_count--;
1752
1753         iwl_mvm_power_update_mac(mvm);
1754         iwl_mvm_mac_ctxt_remove(mvm, vif);
1755
1756 out_release:
1757         iwl_mvm_mac_ctxt_release(mvm, vif);
1758         mutex_unlock(&mvm->mutex);
1759 }
1760
1761 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1762 {
1763         return 0;
1764 }
1765
1766 struct iwl_mvm_mc_iter_data {
1767         struct iwl_mvm *mvm;
1768         int port_id;
1769 };
1770
1771 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1772                                       struct ieee80211_vif *vif)
1773 {
1774         struct iwl_mvm_mc_iter_data *data = _data;
1775         struct iwl_mvm *mvm = data->mvm;
1776         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1777         int ret, len;
1778
1779         /* if we don't have free ports, mcast frames will be dropped */
1780         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1781                 return;
1782
1783         if (vif->type != NL80211_IFTYPE_STATION ||
1784             !vif->bss_conf.assoc)
1785                 return;
1786
1787         cmd->port_id = data->port_id++;
1788         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1789         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1790
1791         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1792         if (ret)
1793                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1794 }
1795
1796 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1797 {
1798         struct iwl_mvm_mc_iter_data iter_data = {
1799                 .mvm = mvm,
1800         };
1801
1802         lockdep_assert_held(&mvm->mutex);
1803
1804         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1805                 return;
1806
1807         ieee80211_iterate_active_interfaces_atomic(
1808                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1809                 iwl_mvm_mc_iface_iterator, &iter_data);
1810 }
1811
1812 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1813                                      struct netdev_hw_addr_list *mc_list)
1814 {
1815         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1816         struct iwl_mcast_filter_cmd *cmd;
1817         struct netdev_hw_addr *addr;
1818         int addr_count;
1819         bool pass_all;
1820         int len;
1821
1822         addr_count = netdev_hw_addr_list_count(mc_list);
1823         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1824                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1825         if (pass_all)
1826                 addr_count = 0;
1827
1828         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1829         cmd = kzalloc(len, GFP_ATOMIC);
1830         if (!cmd)
1831                 return 0;
1832
1833         if (pass_all) {
1834                 cmd->pass_all = 1;
1835                 return (u64)(unsigned long)cmd;
1836         }
1837
1838         netdev_hw_addr_list_for_each(addr, mc_list) {
1839                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1840                                    cmd->count, addr->addr);
1841                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1842                        addr->addr, ETH_ALEN);
1843                 cmd->count++;
1844         }
1845
1846         return (u64)(unsigned long)cmd;
1847 }
1848
1849 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1850                                      unsigned int changed_flags,
1851                                      unsigned int *total_flags,
1852                                      u64 multicast)
1853 {
1854         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1855         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1856
1857         mutex_lock(&mvm->mutex);
1858
1859         /* replace previous configuration */
1860         kfree(mvm->mcast_filter_cmd);
1861         mvm->mcast_filter_cmd = cmd;
1862
1863         if (!cmd)
1864                 goto out;
1865
1866         iwl_mvm_recalc_multicast(mvm);
1867 out:
1868         mutex_unlock(&mvm->mutex);
1869         *total_flags = 0;
1870 }
1871
1872 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1873 struct iwl_bcast_iter_data {
1874         struct iwl_mvm *mvm;
1875         struct iwl_bcast_filter_cmd *cmd;
1876         u8 current_filter;
1877 };
1878
1879 static void
1880 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1881                          const struct iwl_fw_bcast_filter *in_filter,
1882                          struct iwl_fw_bcast_filter *out_filter)
1883 {
1884         struct iwl_fw_bcast_filter_attr *attr;
1885         int i;
1886
1887         memcpy(out_filter, in_filter, sizeof(*out_filter));
1888
1889         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1890                 attr = &out_filter->attrs[i];
1891
1892                 if (!attr->mask)
1893                         break;
1894
1895                 switch (attr->reserved1) {
1896                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1897                         if (vif->bss_conf.arp_addr_cnt != 1) {
1898                                 attr->mask = 0;
1899                                 continue;
1900                         }
1901
1902                         attr->val = vif->bss_conf.arp_addr_list[0];
1903                         break;
1904                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1905                         attr->val = *(__be32 *)&vif->addr[2];
1906                         break;
1907                 default:
1908                         break;
1909                 }
1910                 attr->reserved1 = 0;
1911                 out_filter->num_attrs++;
1912         }
1913 }
1914
1915 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1916                                           struct ieee80211_vif *vif)
1917 {
1918         struct iwl_bcast_iter_data *data = _data;
1919         struct iwl_mvm *mvm = data->mvm;
1920         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1921         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1922         struct iwl_fw_bcast_mac *bcast_mac;
1923         int i;
1924
1925         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1926                 return;
1927
1928         bcast_mac = &cmd->macs[mvmvif->id];
1929
1930         /*
1931          * enable filtering only for associated stations, but not for P2P
1932          * Clients
1933          */
1934         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1935             !vif->bss_conf.assoc)
1936                 return;
1937
1938         bcast_mac->default_discard = 1;
1939
1940         /* copy all configured filters */
1941         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1942                 /*
1943                  * Make sure we don't exceed our filters limit.
1944                  * if there is still a valid filter to be configured,
1945                  * be on the safe side and just allow bcast for this mac.
1946                  */
1947                 if (WARN_ON_ONCE(data->current_filter >=
1948                                  ARRAY_SIZE(cmd->filters))) {
1949                         bcast_mac->default_discard = 0;
1950                         bcast_mac->attached_filters = 0;
1951                         break;
1952                 }
1953
1954                 iwl_mvm_set_bcast_filter(vif,
1955                                          &mvm->bcast_filters[i],
1956                                          &cmd->filters[data->current_filter]);
1957
1958                 /* skip current filter if it contains no attributes */
1959                 if (!cmd->filters[data->current_filter].num_attrs)
1960                         continue;
1961
1962                 /* attach the filter to current mac */
1963                 bcast_mac->attached_filters |=
1964                                 cpu_to_le16(BIT(data->current_filter));
1965
1966                 data->current_filter++;
1967         }
1968 }
1969
1970 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1971                                     struct iwl_bcast_filter_cmd *cmd)
1972 {
1973         struct iwl_bcast_iter_data iter_data = {
1974                 .mvm = mvm,
1975                 .cmd = cmd,
1976         };
1977
1978         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1979                 return false;
1980
1981         memset(cmd, 0, sizeof(*cmd));
1982         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1983         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1984
1985 #ifdef CONFIG_IWLWIFI_DEBUGFS
1986         /* use debugfs filters/macs if override is configured */
1987         if (mvm->dbgfs_bcast_filtering.override) {
1988                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1989                        sizeof(cmd->filters));
1990                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1991                        sizeof(cmd->macs));
1992                 return true;
1993         }
1994 #endif
1995
1996         /* if no filters are configured, do nothing */
1997         if (!mvm->bcast_filters)
1998                 return false;
1999
2000         /* configure and attach these filters for each associated sta vif */
2001         ieee80211_iterate_active_interfaces(
2002                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2003                 iwl_mvm_bcast_filter_iterator, &iter_data);
2004
2005         return true;
2006 }
2007 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2008                                           struct ieee80211_vif *vif)
2009 {
2010         struct iwl_bcast_filter_cmd cmd;
2011
2012         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2013                 return 0;
2014
2015         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2016                 return 0;
2017
2018         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2019                                     sizeof(cmd), &cmd);
2020 }
2021 #else
2022 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2023                                                  struct ieee80211_vif *vif)
2024 {
2025         return 0;
2026 }
2027 #endif
2028
2029 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2030                                              struct ieee80211_vif *vif,
2031                                              struct ieee80211_bss_conf *bss_conf,
2032                                              u32 changes)
2033 {
2034         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2035         int ret;
2036
2037         /*
2038          * Re-calculate the tsf id, as the master-slave relations depend on the
2039          * beacon interval, which was not known when the station interface was
2040          * added.
2041          */
2042         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2043                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2044
2045         /*
2046          * If we're not associated yet, take the (new) BSSID before associating
2047          * so the firmware knows. If we're already associated, then use the old
2048          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2049          * branch for disassociation below.
2050          */
2051         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2052                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2053
2054         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2055         if (ret)
2056                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2057
2058         /* after sending it once, adopt mac80211 data */
2059         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2060         mvmvif->associated = bss_conf->assoc;
2061
2062         if (changes & BSS_CHANGED_ASSOC) {
2063                 if (bss_conf->assoc) {
2064                         /* clear statistics to get clean beacon counter */
2065                         iwl_mvm_request_statistics(mvm, true);
2066                         memset(&mvmvif->beacon_stats, 0,
2067                                sizeof(mvmvif->beacon_stats));
2068
2069                         /* add quota for this interface */
2070                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2071                         if (ret) {
2072                                 IWL_ERR(mvm, "failed to update quotas\n");
2073                                 return;
2074                         }
2075
2076                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2077                                      &mvm->status)) {
2078                                 /*
2079                                  * If we're restarting then the firmware will
2080                                  * obviously have lost synchronisation with
2081                                  * the AP. It will attempt to synchronise by
2082                                  * itself, but we can make it more reliable by
2083                                  * scheduling a session protection time event.
2084                                  *
2085                                  * The firmware needs to receive a beacon to
2086                                  * catch up with synchronisation, use 110% of
2087                                  * the beacon interval.
2088                                  *
2089                                  * Set a large maximum delay to allow for more
2090                                  * than a single interface.
2091                                  */
2092                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2093                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2094                                                         5 * dur, false);
2095                         }
2096
2097                         iwl_mvm_sf_update(mvm, vif, false);
2098                         iwl_mvm_power_vif_assoc(mvm, vif);
2099                         if (vif->p2p) {
2100                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2101                                 iwl_mvm_update_smps(mvm, vif,
2102                                                     IWL_MVM_SMPS_REQ_PROT,
2103                                                     IEEE80211_SMPS_DYNAMIC);
2104                         }
2105                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2106                         /*
2107                          * If update fails - SF might be running in associated
2108                          * mode while disassociated - which is forbidden.
2109                          */
2110                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2111                                   "Failed to update SF upon disassociation\n");
2112
2113                         /* remove AP station now that the MAC is unassoc */
2114                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2115                         if (ret)
2116                                 IWL_ERR(mvm, "failed to remove AP station\n");
2117
2118                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2119                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2120                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2121                         /* remove quota for this interface */
2122                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2123                         if (ret)
2124                                 IWL_ERR(mvm, "failed to update quotas\n");
2125
2126                         if (vif->p2p)
2127                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2128
2129                         /* this will take the cleared BSSID from bss_conf */
2130                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2131                         if (ret)
2132                                 IWL_ERR(mvm,
2133                                         "failed to update MAC %pM (clear after unassoc)\n",
2134                                         vif->addr);
2135                 }
2136
2137                 iwl_mvm_recalc_multicast(mvm);
2138                 iwl_mvm_configure_bcast_filter(mvm, vif);
2139
2140                 /* reset rssi values */
2141                 mvmvif->bf_data.ave_beacon_signal = 0;
2142
2143                 iwl_mvm_bt_coex_vif_change(mvm);
2144                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2145                                     IEEE80211_SMPS_AUTOMATIC);
2146         } else if (changes & BSS_CHANGED_BEACON_INFO) {
2147                 /*
2148                  * We received a beacon _after_ association so
2149                  * remove the session protection.
2150                  */
2151                 iwl_mvm_remove_time_event(mvm, mvmvif,
2152                                           &mvmvif->time_event_data);
2153         }
2154
2155         if (changes & BSS_CHANGED_BEACON_INFO) {
2156                 iwl_mvm_sf_update(mvm, vif, false);
2157                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2158         }
2159
2160         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2161                 ret = iwl_mvm_power_update_mac(mvm);
2162                 if (ret)
2163                         IWL_ERR(mvm, "failed to update power mode\n");
2164         }
2165
2166         if (changes & BSS_CHANGED_TXPOWER) {
2167                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2168                                 bss_conf->txpower);
2169                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2170         }
2171
2172         if (changes & BSS_CHANGED_CQM) {
2173                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2174                 /* reset cqm events tracking */
2175                 mvmvif->bf_data.last_cqm_event = 0;
2176                 if (mvmvif->bf_data.bf_enabled) {
2177                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2178                         if (ret)
2179                                 IWL_ERR(mvm,
2180                                         "failed to update CQM thresholds\n");
2181                 }
2182         }
2183
2184         if (changes & BSS_CHANGED_ARP_FILTER) {
2185                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2186                 iwl_mvm_configure_bcast_filter(mvm, vif);
2187         }
2188 }
2189
2190 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2191                                  struct ieee80211_vif *vif)
2192 {
2193         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2194         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2195         int ret;
2196
2197         /*
2198          * iwl_mvm_mac_ctxt_add() might read directly from the device
2199          * (the system time), so make sure it is available.
2200          */
2201         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2202         if (ret)
2203                 return ret;
2204
2205         mutex_lock(&mvm->mutex);
2206
2207         /* Send the beacon template */
2208         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2209         if (ret)
2210                 goto out_unlock;
2211
2212         /*
2213          * Re-calculate the tsf id, as the master-slave relations depend on the
2214          * beacon interval, which was not known when the AP interface was added.
2215          */
2216         if (vif->type == NL80211_IFTYPE_AP)
2217                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2218
2219         /* Add the mac context */
2220         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2221         if (ret)
2222                 goto out_unlock;
2223
2224         /* Perform the binding */
2225         ret = iwl_mvm_binding_add_vif(mvm, vif);
2226         if (ret)
2227                 goto out_remove;
2228
2229         /* Send the bcast station. At this stage the TBTT and DTIM time events
2230          * are added and applied to the scheduler */
2231         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2232         if (ret)
2233                 goto out_unbind;
2234
2235         /* must be set before quota calculations */
2236         mvmvif->ap_ibss_active = true;
2237
2238         /* power updated needs to be done before quotas */
2239         iwl_mvm_power_update_mac(mvm);
2240
2241         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2242         if (ret)
2243                 goto out_quota_failed;
2244
2245         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2246         if (vif->p2p && mvm->p2p_device_vif)
2247                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2248
2249         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2250
2251         iwl_mvm_bt_coex_vif_change(mvm);
2252
2253         /* we don't support TDLS during DCM */
2254         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2255                 iwl_mvm_teardown_tdls_peers(mvm);
2256
2257         goto out_unlock;
2258
2259 out_quota_failed:
2260         iwl_mvm_power_update_mac(mvm);
2261         mvmvif->ap_ibss_active = false;
2262         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2263 out_unbind:
2264         iwl_mvm_binding_remove_vif(mvm, vif);
2265 out_remove:
2266         iwl_mvm_mac_ctxt_remove(mvm, vif);
2267 out_unlock:
2268         mutex_unlock(&mvm->mutex);
2269         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2270         return ret;
2271 }
2272
2273 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2274                                  struct ieee80211_vif *vif)
2275 {
2276         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2277         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2278
2279         iwl_mvm_prepare_mac_removal(mvm, vif);
2280
2281         mutex_lock(&mvm->mutex);
2282
2283         /* Handle AP stop while in CSA */
2284         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2285                 iwl_mvm_remove_time_event(mvm, mvmvif,
2286                                           &mvmvif->time_event_data);
2287                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2288         }
2289
2290         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2291                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2292                 mvm->csa_tx_block_bcn_timeout = 0;
2293         }
2294
2295         mvmvif->ap_ibss_active = false;
2296         mvm->ap_last_beacon_gp2 = 0;
2297
2298         iwl_mvm_bt_coex_vif_change(mvm);
2299
2300         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2301
2302         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2303         if (vif->p2p && mvm->p2p_device_vif)
2304                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2305
2306         iwl_mvm_update_quotas(mvm, false, NULL);
2307         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2308         iwl_mvm_binding_remove_vif(mvm, vif);
2309
2310         iwl_mvm_power_update_mac(mvm);
2311
2312         iwl_mvm_mac_ctxt_remove(mvm, vif);
2313
2314         mutex_unlock(&mvm->mutex);
2315 }
2316
2317 static void
2318 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2319                                  struct ieee80211_vif *vif,
2320                                  struct ieee80211_bss_conf *bss_conf,
2321                                  u32 changes)
2322 {
2323         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2324
2325         /* Changes will be applied when the AP/IBSS is started */
2326         if (!mvmvif->ap_ibss_active)
2327                 return;
2328
2329         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2330                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2331             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2332                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2333
2334         /* Need to send a new beacon template to the FW */
2335         if (changes & BSS_CHANGED_BEACON &&
2336             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2337                 IWL_WARN(mvm, "Failed updating beacon data\n");
2338
2339         if (changes & BSS_CHANGED_TXPOWER) {
2340                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2341                                 bss_conf->txpower);
2342                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2343         }
2344
2345 }
2346
2347 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2348                                      struct ieee80211_vif *vif,
2349                                      struct ieee80211_bss_conf *bss_conf,
2350                                      u32 changes)
2351 {
2352         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353
2354         /*
2355          * iwl_mvm_bss_info_changed_station() might call
2356          * iwl_mvm_protect_session(), which reads directly from
2357          * the device (the system time), so make sure it is available.
2358          */
2359         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2360                 return;
2361
2362         mutex_lock(&mvm->mutex);
2363
2364         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2365                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2366
2367         switch (vif->type) {
2368         case NL80211_IFTYPE_STATION:
2369                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2370                 break;
2371         case NL80211_IFTYPE_AP:
2372         case NL80211_IFTYPE_ADHOC:
2373                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2374                 break;
2375         default:
2376                 /* shouldn't happen */
2377                 WARN_ON_ONCE(1);
2378         }
2379
2380         mutex_unlock(&mvm->mutex);
2381         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2382 }
2383
2384 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2385                                struct ieee80211_vif *vif,
2386                                struct ieee80211_scan_request *hw_req)
2387 {
2388         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2389         int ret;
2390
2391         if (hw_req->req.n_channels == 0 ||
2392             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2393                 return -EINVAL;
2394
2395         mutex_lock(&mvm->mutex);
2396         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2397         mutex_unlock(&mvm->mutex);
2398
2399         return ret;
2400 }
2401
2402 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2403                                        struct ieee80211_vif *vif)
2404 {
2405         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2406
2407         mutex_lock(&mvm->mutex);
2408
2409         /* Due to a race condition, it's possible that mac80211 asks
2410          * us to stop a hw_scan when it's already stopped.  This can
2411          * happen, for instance, if we stopped the scan ourselves,
2412          * called ieee80211_scan_completed() and the userspace called
2413          * cancel scan scan before ieee80211_scan_work() could run.
2414          * To handle that, simply return if the scan is not running.
2415         */
2416         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2417                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2418
2419         mutex_unlock(&mvm->mutex);
2420 }
2421
2422 static void
2423 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2424                                   struct ieee80211_sta *sta, u16 tids,
2425                                   int num_frames,
2426                                   enum ieee80211_frame_release_type reason,
2427                                   bool more_data)
2428 {
2429         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2430
2431         /* Called when we need to transmit (a) frame(s) from mac80211 */
2432
2433         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2434                                           tids, more_data, false);
2435 }
2436
2437 static void
2438 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2439                                     struct ieee80211_sta *sta, u16 tids,
2440                                     int num_frames,
2441                                     enum ieee80211_frame_release_type reason,
2442                                     bool more_data)
2443 {
2444         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2445
2446         /* Called when we need to transmit (a) frame(s) from agg queue */
2447
2448         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2449                                           tids, more_data, true);
2450 }
2451
2452 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2453                                    struct ieee80211_vif *vif,
2454                                    enum sta_notify_cmd cmd,
2455                                    struct ieee80211_sta *sta)
2456 {
2457         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2458         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2459         unsigned long txqs = 0, tids = 0;
2460         int tid;
2461
2462         spin_lock_bh(&mvmsta->lock);
2463         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2464                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2465
2466                 if (tid_data->state != IWL_AGG_ON &&
2467                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2468                         continue;
2469
2470                 __set_bit(tid_data->txq_id, &txqs);
2471
2472                 if (iwl_mvm_tid_queued(tid_data) == 0)
2473                         continue;
2474
2475                 __set_bit(tid, &tids);
2476         }
2477
2478         switch (cmd) {
2479         case STA_NOTIFY_SLEEP:
2480                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2481                         ieee80211_sta_block_awake(hw, sta, true);
2482
2483                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2484                         ieee80211_sta_set_buffered(sta, tid, true);
2485
2486                 if (txqs)
2487                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2488                 /*
2489                  * The fw updates the STA to be asleep. Tx packets on the Tx
2490                  * queues to this station will not be transmitted. The fw will
2491                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2492                  */
2493                 break;
2494         case STA_NOTIFY_AWAKE:
2495                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2496                         break;
2497
2498                 if (txqs)
2499                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2500                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2501                 break;
2502         default:
2503                 break;
2504         }
2505         spin_unlock_bh(&mvmsta->lock);
2506 }
2507
2508 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2509                                        struct ieee80211_vif *vif,
2510                                        struct ieee80211_sta *sta)
2511 {
2512         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2513         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2514
2515         /*
2516          * This is called before mac80211 does RCU synchronisation,
2517          * so here we already invalidate our internal RCU-protected
2518          * station pointer. The rest of the code will thus no longer
2519          * be able to find the station this way, and we don't rely
2520          * on further RCU synchronisation after the sta_state()
2521          * callback deleted the station.
2522          */
2523         mutex_lock(&mvm->mutex);
2524         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2525                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2526                                    ERR_PTR(-ENOENT));
2527         mutex_unlock(&mvm->mutex);
2528 }
2529
2530 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2531                                 const u8 *bssid)
2532 {
2533         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2534                 return;
2535
2536         if (iwlwifi_mod_params.uapsd_disable) {
2537                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2538                 return;
2539         }
2540
2541         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2542 }
2543
2544 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2545                                  struct ieee80211_vif *vif,
2546                                  struct ieee80211_sta *sta,
2547                                  enum ieee80211_sta_state old_state,
2548                                  enum ieee80211_sta_state new_state)
2549 {
2550         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2551         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2552         int ret;
2553
2554         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2555                            sta->addr, old_state, new_state);
2556
2557         /* this would be a mac80211 bug ... but don't crash */
2558         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2559                 return -EINVAL;
2560
2561         /* if a STA is being removed, reuse its ID */
2562         flush_work(&mvm->sta_drained_wk);
2563
2564         mutex_lock(&mvm->mutex);
2565         if (old_state == IEEE80211_STA_NOTEXIST &&
2566             new_state == IEEE80211_STA_NONE) {
2567                 /*
2568                  * Firmware bug - it'll crash if the beacon interval is less
2569                  * than 16. We can't avoid connecting at all, so refuse the
2570                  * station state change, this will cause mac80211 to abandon
2571                  * attempts to connect to this AP, and eventually wpa_s will
2572                  * blacklist the AP...
2573                  */
2574                 if (vif->type == NL80211_IFTYPE_STATION &&
2575                     vif->bss_conf.beacon_int < 16) {
2576                         IWL_ERR(mvm,
2577                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2578                                 sta->addr, vif->bss_conf.beacon_int);
2579                         ret = -EINVAL;
2580                         goto out_unlock;
2581                 }
2582
2583                 if (sta->tdls &&
2584                     (vif->p2p ||
2585                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2586                                                 IWL_MVM_TDLS_STA_COUNT ||
2587                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2588                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2589                         ret = -EBUSY;
2590                         goto out_unlock;
2591                 }
2592
2593                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2594                 if (sta->tdls && ret == 0)
2595                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2596         } else if (old_state == IEEE80211_STA_NONE &&
2597                    new_state == IEEE80211_STA_AUTH) {
2598                 /*
2599                  * EBS may be disabled due to previous failures reported by FW.
2600                  * Reset EBS status here assuming environment has been changed.
2601                  */
2602                 mvm->last_ebs_successful = true;
2603                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2604                 ret = 0;
2605         } else if (old_state == IEEE80211_STA_AUTH &&
2606                    new_state == IEEE80211_STA_ASSOC) {
2607                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2608                 if (ret == 0)
2609                         iwl_mvm_rs_rate_init(mvm, sta,
2610                                              mvmvif->phy_ctxt->channel->band,
2611                                              true);
2612         } else if (old_state == IEEE80211_STA_ASSOC &&
2613                    new_state == IEEE80211_STA_AUTHORIZED) {
2614
2615                 /* we don't support TDLS during DCM */
2616                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2617                         iwl_mvm_teardown_tdls_peers(mvm);
2618
2619                 /* enable beacon filtering */
2620                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2621                 ret = 0;
2622         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2623                    new_state == IEEE80211_STA_ASSOC) {
2624                 /* disable beacon filtering */
2625                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2626                 ret = 0;
2627         } else if (old_state == IEEE80211_STA_ASSOC &&
2628                    new_state == IEEE80211_STA_AUTH) {
2629                 ret = 0;
2630         } else if (old_state == IEEE80211_STA_AUTH &&
2631                    new_state == IEEE80211_STA_NONE) {
2632                 ret = 0;
2633         } else if (old_state == IEEE80211_STA_NONE &&
2634                    new_state == IEEE80211_STA_NOTEXIST) {
2635                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2636                 if (sta->tdls)
2637                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2638         } else {
2639                 ret = -EIO;
2640         }
2641  out_unlock:
2642         mutex_unlock(&mvm->mutex);
2643
2644         if (sta->tdls && ret == 0) {
2645                 if (old_state == IEEE80211_STA_NOTEXIST &&
2646                     new_state == IEEE80211_STA_NONE)
2647                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2648                 else if (old_state == IEEE80211_STA_NONE &&
2649                          new_state == IEEE80211_STA_NOTEXIST)
2650                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2651         }
2652
2653         return ret;
2654 }
2655
2656 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2657 {
2658         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2659
2660         mvm->rts_threshold = value;
2661
2662         return 0;
2663 }
2664
2665 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2666                                   struct ieee80211_vif *vif,
2667                                   struct ieee80211_sta *sta, u32 changed)
2668 {
2669         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2670
2671         if (vif->type == NL80211_IFTYPE_STATION &&
2672             changed & IEEE80211_RC_NSS_CHANGED)
2673                 iwl_mvm_sf_update(mvm, vif, false);
2674 }
2675
2676 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2677                                struct ieee80211_vif *vif, u16 ac,
2678                                const struct ieee80211_tx_queue_params *params)
2679 {
2680         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2681         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2682
2683         mvmvif->queue_params[ac] = *params;
2684
2685         /*
2686          * No need to update right away, we'll get BSS_CHANGED_QOS
2687          * The exception is P2P_DEVICE interface which needs immediate update.
2688          */
2689         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2690                 int ret;
2691
2692                 mutex_lock(&mvm->mutex);
2693                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2694                 mutex_unlock(&mvm->mutex);
2695                 return ret;
2696         }
2697         return 0;
2698 }
2699
2700 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2701                                       struct ieee80211_vif *vif)
2702 {
2703         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2704         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2705                            200 + vif->bss_conf.beacon_int);
2706         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2707                                100 + vif->bss_conf.beacon_int);
2708
2709         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2710                 return;
2711
2712         /*
2713          * iwl_mvm_protect_session() reads directly from the device
2714          * (the system time), so make sure it is available.
2715          */
2716         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2717                 return;
2718
2719         mutex_lock(&mvm->mutex);
2720         /* Try really hard to protect the session and hear a beacon */
2721         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2722         mutex_unlock(&mvm->mutex);
2723
2724         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2725 }
2726
2727 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2728                                         struct ieee80211_vif *vif,
2729                                         struct cfg80211_sched_scan_request *req,
2730                                         struct ieee80211_scan_ies *ies)
2731 {
2732         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2733
2734         int ret;
2735
2736         mutex_lock(&mvm->mutex);
2737
2738         if (!vif->bss_conf.idle) {
2739                 ret = -EBUSY;
2740                 goto out;
2741         }
2742
2743         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2744
2745 out:
2746         mutex_unlock(&mvm->mutex);
2747         return ret;
2748 }
2749
2750 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2751                                        struct ieee80211_vif *vif)
2752 {
2753         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2754         int ret;
2755
2756         mutex_lock(&mvm->mutex);
2757
2758         /* Due to a race condition, it's possible that mac80211 asks
2759          * us to stop a sched_scan when it's already stopped.  This
2760          * can happen, for instance, if we stopped the scan ourselves,
2761          * called ieee80211_sched_scan_stopped() and the userspace called
2762          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2763          * could run.  To handle this, simply return if the scan is
2764          * not running.
2765         */
2766         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2767                 mutex_unlock(&mvm->mutex);
2768                 return 0;
2769         }
2770
2771         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2772         mutex_unlock(&mvm->mutex);
2773         iwl_mvm_wait_for_async_handlers(mvm);
2774
2775         return ret;
2776 }
2777
2778 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2779                                enum set_key_cmd cmd,
2780                                struct ieee80211_vif *vif,
2781                                struct ieee80211_sta *sta,
2782                                struct ieee80211_key_conf *key)
2783 {
2784         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2785         int ret;
2786
2787         if (iwlwifi_mod_params.sw_crypto) {
2788                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2789                 return -EOPNOTSUPP;
2790         }
2791
2792         switch (key->cipher) {
2793         case WLAN_CIPHER_SUITE_TKIP:
2794                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2795                 /* fall-through */
2796         case WLAN_CIPHER_SUITE_CCMP:
2797                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2798                 break;
2799         case WLAN_CIPHER_SUITE_AES_CMAC:
2800                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2801                 break;
2802         case WLAN_CIPHER_SUITE_WEP40:
2803         case WLAN_CIPHER_SUITE_WEP104:
2804                 /* For non-client mode, only use WEP keys for TX as we probably
2805                  * don't have a station yet anyway and would then have to keep
2806                  * track of the keys, linking them to each of the clients/peers
2807                  * as they appear. For now, don't do that, for performance WEP
2808                  * offload doesn't really matter much, but we need it for some
2809                  * other offload features in client mode.
2810                  */
2811                 if (vif->type != NL80211_IFTYPE_STATION)
2812                         return 0;
2813                 break;
2814         default:
2815                 /* currently FW supports only one optional cipher scheme */
2816                 if (hw->n_cipher_schemes &&
2817                     hw->cipher_schemes->cipher == key->cipher)
2818                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2819                 else
2820                         return -EOPNOTSUPP;
2821         }
2822
2823         mutex_lock(&mvm->mutex);
2824
2825         switch (cmd) {
2826         case SET_KEY:
2827                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2828                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2829                         /*
2830                          * GTK on AP interface is a TX-only key, return 0;
2831                          * on IBSS they're per-station and because we're lazy
2832                          * we don't support them for RX, so do the same.
2833                          */
2834                         ret = 0;
2835                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2836                         break;
2837                 }
2838
2839                 /* During FW restart, in order to restore the state as it was,
2840                  * don't try to reprogram keys we previously failed for.
2841                  */
2842                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2843                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2844                         IWL_DEBUG_MAC80211(mvm,
2845                                            "skip invalid idx key programming during restart\n");
2846                         ret = 0;
2847                         break;
2848                 }
2849
2850                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2851                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key,
2852                                           test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2853                                                    &mvm->status));
2854                 if (ret) {
2855                         IWL_WARN(mvm, "set key failed\n");
2856                         /*
2857                          * can't add key for RX, but we don't need it
2858                          * in the device for TX so still return 0
2859                          */
2860                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2861                         ret = 0;
2862                 }
2863
2864                 break;
2865         case DISABLE_KEY:
2866                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2867                         ret = 0;
2868                         break;
2869                 }
2870
2871                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2872                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2873                 break;
2874         default:
2875                 ret = -EINVAL;
2876         }
2877
2878         mutex_unlock(&mvm->mutex);
2879         return ret;
2880 }
2881
2882 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2883                                         struct ieee80211_vif *vif,
2884                                         struct ieee80211_key_conf *keyconf,
2885                                         struct ieee80211_sta *sta,
2886                                         u32 iv32, u16 *phase1key)
2887 {
2888         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2889
2890         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2891                 return;
2892
2893         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2894 }
2895
2896
2897 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2898                                struct iwl_rx_packet *pkt, void *data)
2899 {
2900         struct iwl_mvm *mvm =
2901                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2902         struct iwl_hs20_roc_res *resp;
2903         int resp_len = iwl_rx_packet_payload_len(pkt);
2904         struct iwl_mvm_time_event_data *te_data = data;
2905
2906         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2907                 return true;
2908
2909         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2910                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2911                 return true;
2912         }
2913
2914         resp = (void *)pkt->data;
2915
2916         IWL_DEBUG_TE(mvm,
2917                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2918                      resp->status, resp->event_unique_id);
2919
2920         te_data->uid = le32_to_cpu(resp->event_unique_id);
2921         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2922                      te_data->uid);
2923
2924         spin_lock_bh(&mvm->time_event_lock);
2925         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2926         spin_unlock_bh(&mvm->time_event_lock);
2927
2928         return true;
2929 }
2930
2931 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
2932 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2933                                     struct ieee80211_channel *channel,
2934                                     struct ieee80211_vif *vif,
2935                                     int duration)
2936 {
2937         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2938         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2939         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2940         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2941         struct iwl_notification_wait wait_time_event;
2942         struct iwl_hs20_roc_req aux_roc_req = {
2943                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2944                 .id_and_color =
2945                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2946                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2947                 /* Set the channel info data */
2948                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2949                         PHY_BAND_24 : PHY_BAND_5,
2950                 .channel_info.channel = channel->hw_value,
2951                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2952                 /* Set the time and duration */
2953                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2954                 .apply_time_max_delay =
2955                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2956                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2957          };
2958
2959         /* Set the node address */
2960         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2961
2962         lockdep_assert_held(&mvm->mutex);
2963
2964         spin_lock_bh(&mvm->time_event_lock);
2965
2966         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2967                 spin_unlock_bh(&mvm->time_event_lock);
2968                 return -EIO;
2969         }
2970
2971         te_data->vif = vif;
2972         te_data->duration = duration;
2973         te_data->id = HOT_SPOT_CMD;
2974
2975         spin_unlock_bh(&mvm->time_event_lock);
2976
2977         /*
2978          * Use a notification wait, which really just processes the
2979          * command response and doesn't wait for anything, in order
2980          * to be able to process the response and get the UID inside
2981          * the RX path. Using CMD_WANT_SKB doesn't work because it
2982          * stores the buffer and then wakes up this thread, by which
2983          * time another notification (that the time event started)
2984          * might already be processed unsuccessfully.
2985          */
2986         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2987                                    time_event_response,
2988                                    ARRAY_SIZE(time_event_response),
2989                                    iwl_mvm_rx_aux_roc, te_data);
2990
2991         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2992                                    &aux_roc_req);
2993
2994         if (res) {
2995                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2996                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2997                 goto out_clear_te;
2998         }
2999
3000         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3001         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3002         /* should never fail */
3003         WARN_ON_ONCE(res);
3004
3005         if (res) {
3006  out_clear_te:
3007                 spin_lock_bh(&mvm->time_event_lock);
3008                 iwl_mvm_te_clear_data(mvm, te_data);
3009                 spin_unlock_bh(&mvm->time_event_lock);
3010         }
3011
3012         return res;
3013 }
3014
3015 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3016                        struct ieee80211_vif *vif,
3017                        struct ieee80211_channel *channel,
3018                        int duration,
3019                        enum ieee80211_roc_type type)
3020 {
3021         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3022         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3023         struct cfg80211_chan_def chandef;
3024         struct iwl_mvm_phy_ctxt *phy_ctxt;
3025         int ret, i;
3026
3027         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3028                            duration, type);
3029
3030         flush_work(&mvm->roc_done_wk);
3031
3032         mutex_lock(&mvm->mutex);
3033
3034         switch (vif->type) {
3035         case NL80211_IFTYPE_STATION:
3036                 if (mvm->fw->ucode_capa.capa[0] &
3037                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3038                         /* Use aux roc framework (HS20) */
3039                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3040                                                        vif, duration);
3041                         goto out_unlock;
3042                 }
3043                 IWL_ERR(mvm, "hotspot not supported\n");
3044                 ret = -EINVAL;
3045                 goto out_unlock;
3046         case NL80211_IFTYPE_P2P_DEVICE:
3047                 /* handle below */
3048                 break;
3049         default:
3050                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3051                 ret = -EINVAL;
3052                 goto out_unlock;
3053         }
3054
3055         for (i = 0; i < NUM_PHY_CTX; i++) {
3056                 phy_ctxt = &mvm->phy_ctxts[i];
3057                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3058                         continue;
3059
3060                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3061                         /*
3062                          * Unbind the P2P_DEVICE from the current PHY context,
3063                          * and if the PHY context is not used remove it.
3064                          */
3065                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3066                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3067                                 goto out_unlock;
3068
3069                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3070
3071                         /* Bind the P2P_DEVICE to the current PHY Context */
3072                         mvmvif->phy_ctxt = phy_ctxt;
3073
3074                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3075                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3076                                 goto out_unlock;
3077
3078                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3079                         goto schedule_time_event;
3080                 }
3081         }
3082
3083         /* Need to update the PHY context only if the ROC channel changed */
3084         if (channel == mvmvif->phy_ctxt->channel)
3085                 goto schedule_time_event;
3086
3087         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3088
3089         /*
3090          * Change the PHY context configuration as it is currently referenced
3091          * only by the P2P Device MAC
3092          */
3093         if (mvmvif->phy_ctxt->ref == 1) {
3094                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3095                                                &chandef, 1, 1);
3096                 if (ret)
3097                         goto out_unlock;
3098         } else {
3099                 /*
3100                  * The PHY context is shared with other MACs. Need to remove the
3101                  * P2P Device from the binding, allocate an new PHY context and
3102                  * create a new binding
3103                  */
3104                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3105                 if (!phy_ctxt) {
3106                         ret = -ENOSPC;
3107                         goto out_unlock;
3108                 }
3109
3110                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3111                                                1, 1);
3112                 if (ret) {
3113                         IWL_ERR(mvm, "Failed to change PHY context\n");
3114                         goto out_unlock;
3115                 }
3116
3117                 /* Unbind the P2P_DEVICE from the current PHY context */
3118                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3119                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3120                         goto out_unlock;
3121
3122                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3123
3124                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3125                 mvmvif->phy_ctxt = phy_ctxt;
3126
3127                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3128                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3129                         goto out_unlock;
3130
3131                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3132         }
3133
3134 schedule_time_event:
3135         /* Schedule the time events */
3136         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3137
3138 out_unlock:
3139         mutex_unlock(&mvm->mutex);
3140         IWL_DEBUG_MAC80211(mvm, "leave\n");
3141         return ret;
3142 }
3143
3144 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3145 {
3146         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3147
3148         IWL_DEBUG_MAC80211(mvm, "enter\n");
3149
3150         mutex_lock(&mvm->mutex);
3151         iwl_mvm_stop_roc(mvm);
3152         mutex_unlock(&mvm->mutex);
3153
3154         IWL_DEBUG_MAC80211(mvm, "leave\n");
3155         return 0;
3156 }
3157
3158 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3159                                  struct ieee80211_chanctx_conf *ctx)
3160 {
3161         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3162         struct iwl_mvm_phy_ctxt *phy_ctxt;
3163         int ret;
3164
3165         lockdep_assert_held(&mvm->mutex);
3166
3167         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3168
3169         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3170         if (!phy_ctxt) {
3171                 ret = -ENOSPC;
3172                 goto out;
3173         }
3174
3175         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3176                                        ctx->rx_chains_static,
3177                                        ctx->rx_chains_dynamic);
3178         if (ret) {
3179                 IWL_ERR(mvm, "Failed to add PHY context\n");
3180                 goto out;
3181         }
3182
3183         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3184         *phy_ctxt_id = phy_ctxt->id;
3185 out:
3186         return ret;
3187 }
3188
3189 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3190                                struct ieee80211_chanctx_conf *ctx)
3191 {
3192         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3193         int ret;
3194
3195         mutex_lock(&mvm->mutex);
3196         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3197         mutex_unlock(&mvm->mutex);
3198
3199         return ret;
3200 }
3201
3202 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3203                                      struct ieee80211_chanctx_conf *ctx)
3204 {
3205         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3206         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3207
3208         lockdep_assert_held(&mvm->mutex);
3209
3210         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3211 }
3212
3213 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3214                                    struct ieee80211_chanctx_conf *ctx)
3215 {
3216         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3217
3218         mutex_lock(&mvm->mutex);
3219         __iwl_mvm_remove_chanctx(mvm, ctx);
3220         mutex_unlock(&mvm->mutex);
3221 }
3222
3223 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3224                                    struct ieee80211_chanctx_conf *ctx,
3225                                    u32 changed)
3226 {
3227         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3228         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3229         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3230
3231         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3232                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3233                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3234                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3235                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3236                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3237                       phy_ctxt->ref, changed))
3238                 return;
3239
3240         mutex_lock(&mvm->mutex);
3241         iwl_mvm_bt_coex_vif_change(mvm);
3242         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3243                                  ctx->rx_chains_static,
3244                                  ctx->rx_chains_dynamic);
3245         mutex_unlock(&mvm->mutex);
3246 }
3247
3248 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3249                                         struct ieee80211_vif *vif,
3250                                         struct ieee80211_chanctx_conf *ctx,
3251                                         bool switching_chanctx)
3252 {
3253         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3254         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3255         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3256         int ret;
3257
3258         lockdep_assert_held(&mvm->mutex);
3259
3260         mvmvif->phy_ctxt = phy_ctxt;
3261
3262         switch (vif->type) {
3263         case NL80211_IFTYPE_AP:
3264                 /* only needed if we're switching chanctx (i.e. during CSA) */
3265                 if (switching_chanctx) {
3266                         mvmvif->ap_ibss_active = true;
3267                         break;
3268                 }
3269         case NL80211_IFTYPE_ADHOC:
3270                 /*
3271                  * The AP binding flow is handled as part of the start_ap flow
3272                  * (in bss_info_changed), similarly for IBSS.
3273                  */
3274                 ret = 0;
3275                 goto out;
3276         case NL80211_IFTYPE_STATION:
3277                 break;
3278         case NL80211_IFTYPE_MONITOR:
3279                 /* always disable PS when a monitor interface is active */
3280                 mvmvif->ps_disabled = true;
3281                 break;
3282         default:
3283                 ret = -EINVAL;
3284                 goto out;
3285         }
3286
3287         ret = iwl_mvm_binding_add_vif(mvm, vif);
3288         if (ret)
3289                 goto out;
3290
3291         /*
3292          * Power state must be updated before quotas,
3293          * otherwise fw will complain.
3294          */
3295         iwl_mvm_power_update_mac(mvm);
3296
3297         /* Setting the quota at this stage is only required for monitor
3298          * interfaces. For the other types, the bss_info changed flow
3299          * will handle quota settings.
3300          */
3301         if (vif->type == NL80211_IFTYPE_MONITOR) {
3302                 mvmvif->monitor_active = true;
3303                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3304                 if (ret)
3305                         goto out_remove_binding;
3306         }
3307
3308         /* Handle binding during CSA */
3309         if (vif->type == NL80211_IFTYPE_AP) {
3310                 iwl_mvm_update_quotas(mvm, false, NULL);
3311                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3312         }
3313
3314         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3315                 u32 duration = 2 * vif->bss_conf.beacon_int;
3316
3317                 /* iwl_mvm_protect_session() reads directly from the
3318                  * device (the system time), so make sure it is
3319                  * available.
3320                  */
3321                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3322                 if (ret)
3323                         goto out_remove_binding;
3324
3325                 /* Protect the session to make sure we hear the first
3326                  * beacon on the new channel.
3327                  */
3328                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3329                                         vif->bss_conf.beacon_int / 2,
3330                                         true);
3331
3332                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3333
3334                 iwl_mvm_update_quotas(mvm, false, NULL);
3335         }
3336
3337         goto out;
3338
3339 out_remove_binding:
3340         iwl_mvm_binding_remove_vif(mvm, vif);
3341         iwl_mvm_power_update_mac(mvm);
3342 out:
3343         if (ret)
3344                 mvmvif->phy_ctxt = NULL;
3345         return ret;
3346 }
3347 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3348                                       struct ieee80211_vif *vif,
3349                                       struct ieee80211_chanctx_conf *ctx)
3350 {
3351         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3352         int ret;
3353
3354         mutex_lock(&mvm->mutex);
3355         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3356         mutex_unlock(&mvm->mutex);
3357
3358         return ret;
3359 }
3360
3361 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3362                                            struct ieee80211_vif *vif,
3363                                            struct ieee80211_chanctx_conf *ctx,
3364                                            bool switching_chanctx)
3365 {
3366         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3367         struct ieee80211_vif *disabled_vif = NULL;
3368
3369         lockdep_assert_held(&mvm->mutex);
3370
3371         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3372
3373         switch (vif->type) {
3374         case NL80211_IFTYPE_ADHOC:
3375                 goto out;
3376         case NL80211_IFTYPE_MONITOR:
3377                 mvmvif->monitor_active = false;
3378                 mvmvif->ps_disabled = false;
3379                 break;
3380         case NL80211_IFTYPE_AP:
3381                 /* This part is triggered only during CSA */
3382                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3383                         goto out;
3384
3385                 mvmvif->csa_countdown = false;
3386
3387                 /* Set CS bit on all the stations */
3388                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3389
3390                 /* Save blocked iface, the timeout is set on the next beacon */
3391                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3392
3393                 mvmvif->ap_ibss_active = false;
3394                 break;
3395         case NL80211_IFTYPE_STATION:
3396                 if (!switching_chanctx)
3397                         break;
3398
3399                 disabled_vif = vif;
3400
3401                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3402                 break;
3403         default:
3404                 break;
3405         }
3406
3407         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3408         iwl_mvm_binding_remove_vif(mvm, vif);
3409
3410 out:
3411         mvmvif->phy_ctxt = NULL;
3412         iwl_mvm_power_update_mac(mvm);
3413 }
3414
3415 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3416                                          struct ieee80211_vif *vif,
3417                                          struct ieee80211_chanctx_conf *ctx)
3418 {
3419         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3420
3421         mutex_lock(&mvm->mutex);
3422         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3423         mutex_unlock(&mvm->mutex);
3424 }
3425
3426 static int
3427 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3428                                 struct ieee80211_vif_chanctx_switch *vifs)
3429 {
3430         int ret;
3431
3432         mutex_lock(&mvm->mutex);
3433         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3434         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3435
3436         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3437         if (ret) {
3438                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3439                 goto out_reassign;
3440         }
3441
3442         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3443                                            true);
3444         if (ret) {
3445                 IWL_ERR(mvm,
3446                         "failed to assign new_ctx during channel switch\n");
3447                 goto out_remove;
3448         }
3449
3450         /* we don't support TDLS during DCM - can be caused by channel switch */
3451         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3452                 iwl_mvm_teardown_tdls_peers(mvm);
3453
3454         goto out;
3455
3456 out_remove:
3457         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3458
3459 out_reassign:
3460         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3461                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3462                 goto out_restart;
3463         }
3464
3465         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3466                                          true)) {
3467                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3468                 goto out_restart;
3469         }
3470
3471         goto out;
3472
3473 out_restart:
3474         /* things keep failing, better restart the hw */
3475         iwl_mvm_nic_restart(mvm, false);
3476
3477 out:
3478         mutex_unlock(&mvm->mutex);
3479
3480         return ret;
3481 }
3482
3483 static int
3484 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3485                                     struct ieee80211_vif_chanctx_switch *vifs)
3486 {
3487         int ret;
3488
3489         mutex_lock(&mvm->mutex);
3490         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3491
3492         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3493                                            true);
3494         if (ret) {
3495                 IWL_ERR(mvm,
3496                         "failed to assign new_ctx during channel switch\n");
3497                 goto out_reassign;
3498         }
3499
3500         goto out;
3501
3502 out_reassign:
3503         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3504                                          true)) {
3505                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3506                 goto out_restart;
3507         }
3508
3509         goto out;
3510
3511 out_restart:
3512         /* things keep failing, better restart the hw */
3513         iwl_mvm_nic_restart(mvm, false);
3514
3515 out:
3516         mutex_unlock(&mvm->mutex);
3517
3518         return ret;
3519 }
3520
3521 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3522                                       struct ieee80211_vif_chanctx_switch *vifs,
3523                                       int n_vifs,
3524                                       enum ieee80211_chanctx_switch_mode mode)
3525 {
3526         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3527         int ret;
3528
3529         /* we only support a single-vif right now */
3530         if (n_vifs > 1)
3531                 return -EOPNOTSUPP;
3532
3533         switch (mode) {
3534         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3535                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3536                 break;
3537         case CHANCTX_SWMODE_REASSIGN_VIF:
3538                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3539                 break;
3540         default:
3541                 ret = -EOPNOTSUPP;
3542                 break;
3543         }
3544
3545         return ret;
3546 }
3547
3548 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3549                            struct ieee80211_sta *sta,
3550                            bool set)
3551 {
3552         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3553         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3554
3555         if (!mvm_sta || !mvm_sta->vif) {
3556                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3557                 return -EINVAL;
3558         }
3559
3560         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3561 }
3562
3563 #ifdef CONFIG_NL80211_TESTMODE
3564 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3565         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3566         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3567         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3568 };
3569
3570 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3571                                       struct ieee80211_vif *vif,
3572                                       void *data, int len)
3573 {
3574         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3575         int err;
3576         u32 noa_duration;
3577
3578         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3579         if (err)
3580                 return err;
3581
3582         if (!tb[IWL_MVM_TM_ATTR_CMD])
3583                 return -EINVAL;
3584
3585         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3586         case IWL_MVM_TM_CMD_SET_NOA:
3587                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3588                     !vif->bss_conf.enable_beacon ||
3589                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3590                         return -EINVAL;
3591
3592                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3593                 if (noa_duration >= vif->bss_conf.beacon_int)
3594                         return -EINVAL;
3595
3596                 mvm->noa_duration = noa_duration;
3597                 mvm->noa_vif = vif;
3598
3599                 return iwl_mvm_update_quotas(mvm, false, NULL);
3600         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3601                 /* must be associated client vif - ignore authorized */
3602                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3603                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3604                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3605                         return -EINVAL;
3606
3607                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3608                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3609                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3610         }
3611
3612         return -EOPNOTSUPP;
3613 }
3614
3615 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3616                                     struct ieee80211_vif *vif,
3617                                     void *data, int len)
3618 {
3619         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3620         int err;
3621
3622         mutex_lock(&mvm->mutex);
3623         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3624         mutex_unlock(&mvm->mutex);
3625
3626         return err;
3627 }
3628 #endif
3629
3630 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3631                                    struct ieee80211_vif *vif,
3632                                    struct ieee80211_channel_switch *chsw)
3633 {
3634         /* By implementing this operation, we prevent mac80211 from
3635          * starting its own channel switch timer, so that we can call
3636          * ieee80211_chswitch_done() ourselves at the right time
3637          * (which is when the absence time event starts).
3638          */
3639
3640         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3641                            "dummy channel switch op\n");
3642 }
3643
3644 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3645                                       struct ieee80211_vif *vif,
3646                                       struct ieee80211_channel_switch *chsw)
3647 {
3648         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3649         struct ieee80211_vif *csa_vif;
3650         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3651         u32 apply_time;
3652         int ret;
3653
3654         mutex_lock(&mvm->mutex);
3655
3656         mvmvif->csa_failed = false;
3657
3658         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3659                            chsw->chandef.center_freq1);
3660
3661         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3662
3663         switch (vif->type) {
3664         case NL80211_IFTYPE_AP:
3665                 csa_vif =
3666                         rcu_dereference_protected(mvm->csa_vif,
3667                                                   lockdep_is_held(&mvm->mutex));
3668                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3669                               "Another CSA is already in progress")) {
3670                         ret = -EBUSY;
3671                         goto out_unlock;
3672                 }
3673
3674                 rcu_assign_pointer(mvm->csa_vif, vif);
3675
3676                 if (WARN_ONCE(mvmvif->csa_countdown,
3677                               "Previous CSA countdown didn't complete")) {
3678                         ret = -EBUSY;
3679                         goto out_unlock;
3680                 }
3681
3682                 break;
3683         case NL80211_IFTYPE_STATION:
3684                 /* Schedule the time event to a bit before beacon 1,
3685                  * to make sure we're in the new channel when the
3686                  * GO/AP arrives.
3687                  */
3688                 apply_time = chsw->device_timestamp +
3689                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3690                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3691
3692                 if (chsw->block_tx)
3693                         iwl_mvm_csa_client_absent(mvm, vif);
3694
3695                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3696                                             apply_time);
3697                 if (mvmvif->bf_data.bf_enabled) {
3698                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3699                         if (ret)
3700                                 goto out_unlock;
3701                 }
3702
3703                 break;
3704         default:
3705                 break;
3706         }
3707
3708         mvmvif->ps_disabled = true;
3709
3710         ret = iwl_mvm_power_update_ps(mvm);
3711         if (ret)
3712                 goto out_unlock;
3713
3714         /* we won't be on this channel any longer */
3715         iwl_mvm_teardown_tdls_peers(mvm);
3716
3717 out_unlock:
3718         mutex_unlock(&mvm->mutex);
3719
3720         return ret;
3721 }
3722
3723 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3724                                        struct ieee80211_vif *vif)
3725 {
3726         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3727         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3728         int ret;
3729
3730         mutex_lock(&mvm->mutex);
3731
3732         if (mvmvif->csa_failed) {
3733                 mvmvif->csa_failed = false;
3734                 ret = -EIO;
3735                 goto out_unlock;
3736         }
3737
3738         if (vif->type == NL80211_IFTYPE_STATION) {
3739                 struct iwl_mvm_sta *mvmsta;
3740
3741                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3742                                                           mvmvif->ap_sta_id);
3743
3744                 if (WARN_ON(!mvmsta)) {
3745                         ret = -EIO;
3746                         goto out_unlock;
3747                 }
3748
3749                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3750
3751                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3752
3753                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3754                 if (ret)
3755                         goto out_unlock;
3756
3757                 iwl_mvm_stop_session_protection(mvm, vif);
3758         }
3759
3760         mvmvif->ps_disabled = false;
3761
3762         ret = iwl_mvm_power_update_ps(mvm);
3763
3764 out_unlock:
3765         mutex_unlock(&mvm->mutex);
3766
3767         return ret;
3768 }
3769
3770 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3771                               struct ieee80211_vif *vif, u32 queues, bool drop)
3772 {
3773         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3774         struct iwl_mvm_vif *mvmvif;
3775         struct iwl_mvm_sta *mvmsta;
3776         struct ieee80211_sta *sta;
3777         int i;
3778         u32 msk = 0;
3779
3780         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3781                 return;
3782
3783         mutex_lock(&mvm->mutex);
3784         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3785
3786         /* flush the AP-station and all TDLS peers */
3787         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3788                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3789                                                 lockdep_is_held(&mvm->mutex));
3790                 if (IS_ERR_OR_NULL(sta))
3791                         continue;
3792
3793                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3794                 if (mvmsta->vif != vif)
3795                         continue;
3796
3797                 /* make sure only TDLS peers or the AP are flushed */
3798                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3799
3800                 msk |= mvmsta->tfd_queue_msk;
3801         }
3802
3803         if (drop) {
3804                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3805                         IWL_ERR(mvm, "flush request fail\n");
3806                 mutex_unlock(&mvm->mutex);
3807         } else {
3808                 mutex_unlock(&mvm->mutex);
3809
3810                 /* this can take a while, and we may need/want other operations
3811                  * to succeed while doing this, so do it without the mutex held
3812                  */
3813                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3814         }
3815 }
3816
3817 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3818                                   struct survey_info *survey)
3819 {
3820         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3821         int ret;
3822
3823         memset(survey, 0, sizeof(*survey));
3824
3825         /* only support global statistics right now */
3826         if (idx != 0)
3827                 return -ENOENT;
3828
3829         if (!(mvm->fw->ucode_capa.capa[0] &
3830                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3831                 return -ENOENT;
3832
3833         mutex_lock(&mvm->mutex);
3834
3835         if (mvm->ucode_loaded) {
3836                 ret = iwl_mvm_request_statistics(mvm, false);
3837                 if (ret)
3838                         goto out;
3839         }
3840
3841         survey->filled = SURVEY_INFO_TIME |
3842                          SURVEY_INFO_TIME_RX |
3843                          SURVEY_INFO_TIME_TX |
3844                          SURVEY_INFO_TIME_SCAN;
3845         survey->time = mvm->accu_radio_stats.on_time_rf +
3846                        mvm->radio_stats.on_time_rf;
3847         do_div(survey->time, USEC_PER_MSEC);
3848
3849         survey->time_rx = mvm->accu_radio_stats.rx_time +
3850                           mvm->radio_stats.rx_time;
3851         do_div(survey->time_rx, USEC_PER_MSEC);
3852
3853         survey->time_tx = mvm->accu_radio_stats.tx_time +
3854                           mvm->radio_stats.tx_time;
3855         do_div(survey->time_tx, USEC_PER_MSEC);
3856
3857         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3858                             mvm->radio_stats.on_time_scan;
3859         do_div(survey->time_scan, USEC_PER_MSEC);
3860
3861         ret = 0;
3862  out:
3863         mutex_unlock(&mvm->mutex);
3864         return ret;
3865 }
3866
3867 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3868                                        struct ieee80211_vif *vif,
3869                                        struct ieee80211_sta *sta,
3870                                        struct station_info *sinfo)
3871 {
3872         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3873         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3874         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3875
3876         if (!(mvm->fw->ucode_capa.capa[0] &
3877                                 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3878                 return;
3879
3880         /* if beacon filtering isn't on mac80211 does it anyway */
3881         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3882                 return;
3883
3884         if (!vif->bss_conf.assoc)
3885                 return;
3886
3887         mutex_lock(&mvm->mutex);
3888
3889         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3890                 goto unlock;
3891
3892         if (iwl_mvm_request_statistics(mvm, false))
3893                 goto unlock;
3894
3895         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3896                            mvmvif->beacon_stats.accu_num_beacons;
3897         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3898         if (mvmvif->beacon_stats.avg_signal) {
3899                 /* firmware only reports a value after RXing a few beacons */
3900                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3901                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3902         }
3903  unlock:
3904         mutex_unlock(&mvm->mutex);
3905 }
3906
3907 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3908                                        struct ieee80211_vif *vif,
3909                                        const struct ieee80211_event *event)
3910 {
3911 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3912         do {                                                    \
3913                 if ((_cnt) && --(_cnt))                         \
3914                         break;                                  \
3915                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3916         } while (0)
3917
3918         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3919         struct iwl_fw_dbg_trigger_tlv *trig;
3920         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3921
3922         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3923                 return;
3924
3925         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3926         trig_mlme = (void *)trig->data;
3927         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3928                 return;
3929
3930         if (event->u.mlme.data == ASSOC_EVENT) {
3931                 if (event->u.mlme.status == MLME_DENIED)
3932                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3933                                            trig_mlme->stop_assoc_denied,
3934                                            "DENIED ASSOC: reason %d",
3935                                             event->u.mlme.reason);
3936                 else if (event->u.mlme.status == MLME_TIMEOUT)
3937                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3938                                            trig_mlme->stop_assoc_timeout,
3939                                            "ASSOC TIMEOUT");
3940         } else if (event->u.mlme.data == AUTH_EVENT) {
3941                 if (event->u.mlme.status == MLME_DENIED)
3942                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3943                                            trig_mlme->stop_auth_denied,
3944                                            "DENIED AUTH: reason %d",
3945                                            event->u.mlme.reason);
3946                 else if (event->u.mlme.status == MLME_TIMEOUT)
3947                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3948                                            trig_mlme->stop_auth_timeout,
3949                                            "AUTH TIMEOUT");
3950         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3951                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3952                                    trig_mlme->stop_rx_deauth,
3953                                    "DEAUTH RX %d", event->u.mlme.reason);
3954         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3955                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3956                                    trig_mlme->stop_tx_deauth,
3957                                    "DEAUTH TX %d", event->u.mlme.reason);
3958         }
3959 #undef CHECK_MLME_TRIGGER
3960 }
3961
3962 const struct ieee80211_ops iwl_mvm_hw_ops = {
3963         .tx = iwl_mvm_mac_tx,
3964         .ampdu_action = iwl_mvm_mac_ampdu_action,
3965         .start = iwl_mvm_mac_start,
3966         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3967         .stop = iwl_mvm_mac_stop,
3968         .add_interface = iwl_mvm_mac_add_interface,
3969         .remove_interface = iwl_mvm_mac_remove_interface,
3970         .config = iwl_mvm_mac_config,
3971         .prepare_multicast = iwl_mvm_prepare_multicast,
3972         .configure_filter = iwl_mvm_configure_filter,
3973         .bss_info_changed = iwl_mvm_bss_info_changed,
3974         .hw_scan = iwl_mvm_mac_hw_scan,
3975         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3976         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3977         .sta_state = iwl_mvm_mac_sta_state,
3978         .sta_notify = iwl_mvm_mac_sta_notify,
3979         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3980         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3981         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3982         .sta_rc_update = iwl_mvm_sta_rc_update,
3983         .conf_tx = iwl_mvm_mac_conf_tx,
3984         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3985         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3986         .flush = iwl_mvm_mac_flush,
3987         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3988         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3989         .set_key = iwl_mvm_mac_set_key,
3990         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3991         .remain_on_channel = iwl_mvm_roc,
3992         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3993         .add_chanctx = iwl_mvm_add_chanctx,
3994         .remove_chanctx = iwl_mvm_remove_chanctx,
3995         .change_chanctx = iwl_mvm_change_chanctx,
3996         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3997         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3998         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3999
4000         .start_ap = iwl_mvm_start_ap_ibss,
4001         .stop_ap = iwl_mvm_stop_ap_ibss,
4002         .join_ibss = iwl_mvm_start_ap_ibss,
4003         .leave_ibss = iwl_mvm_stop_ap_ibss,
4004
4005         .set_tim = iwl_mvm_set_tim,
4006
4007         .channel_switch = iwl_mvm_channel_switch,
4008         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4009         .post_channel_switch = iwl_mvm_post_channel_switch,
4010
4011         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4012         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4013         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4014
4015         .event_callback = iwl_mvm_mac_event_callback,
4016
4017         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4018
4019 #ifdef CONFIG_PM_SLEEP
4020         /* look at d3.c */
4021         .suspend = iwl_mvm_suspend,
4022         .resume = iwl_mvm_resume,
4023         .set_wakeup = iwl_mvm_set_wakeup,
4024         .set_rekey_data = iwl_mvm_set_rekey_data,
4025 #if IS_ENABLED(CONFIG_IPV6)
4026         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4027 #endif
4028         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4029 #endif
4030         .get_survey = iwl_mvm_mac_get_survey,
4031         .sta_statistics = iwl_mvm_mac_sta_statistics,
4032 };