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
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  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,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  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 "fw-api-scan.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88 #include "iwl-csr.h"
  89 #include "iwl-nvm-parse.h"
  90
  91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_STATION),
  95         },
  96         {
  97                 .max = 1,
  98                 .types = BIT(NL80211_IFTYPE_AP) |
  99                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 100                         BIT(NL80211_IFTYPE_P2P_GO),
 101         },
 102         {
 103                 .max = 1,
 104                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 105         },
 106 };
 107
 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 109         {
 110                 .num_different_channels = 2,
 111                 .max_interfaces = 3,
 112                 .limits = iwl_mvm_limits,
 113                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 114         },
 115 };
 116
 117 #ifdef CONFIG_PM_SLEEP
 118 static const struct nl80211_wowlan_tcp_data_token_feature
 119 iwl_mvm_wowlan_tcp_token_feature = {
 120         .min_len = 0,
 121         .max_len = 255,
 122         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 123 };
 124
 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 126         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 127         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 128                             sizeof(struct ethhdr) -
 129                             sizeof(struct iphdr) -
 130                             sizeof(struct tcphdr),
 131         .data_interval_max = 65535, /* __le16 in API */
 132         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 133                             sizeof(struct ethhdr) -
 134                             sizeof(struct iphdr) -
 135                             sizeof(struct tcphdr),
 136         .seq = true,
 137 };
 138 #endif
 139
 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 141 /*
 142  * Use the reserved field to indicate magic values.
 143  * these values will only be used internally by the driver,
 144  * and won't make it to the fw (reserved will be 0).
 145  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 146  *      be the vif's ip address. in case there is not a single
 147  *      ip address (0, or more than 1), this attribute will
 148  *      be skipped.
 149  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 150  *      the LSB bytes of the vif's mac address
 151  */
 152 enum {
 153         BC_FILTER_MAGIC_NONE = 0,
 154         BC_FILTER_MAGIC_IP,
 155         BC_FILTER_MAGIC_MAC,
 156 };
 157
 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 159         {
 160                 /* arp */
 161                 .discard = 0,
 162                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 163                 .attrs = {
 164                         {
 165                                 /* frame type - arp, hw type - ethernet */
 166                                 .offset_type =
 167                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 168                                 .offset = sizeof(rfc1042_header),
 169                                 .val = cpu_to_be32(0x08060001),
 170                                 .mask = cpu_to_be32(0xffffffff),
 171                         },
 172                         {
 173                                 /* arp dest ip */
 174                                 .offset_type =
 175                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 176                                 .offset = sizeof(rfc1042_header) + 2 +
 177                                           sizeof(struct arphdr) +
 178                                           ETH_ALEN + sizeof(__be32) +
 179                                           ETH_ALEN,
 180                                 .mask = cpu_to_be32(0xffffffff),
 181                                 /* mark it as special field */
 182                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 183                         },
 184                 },
 185         },
 186         {
 187                 /* dhcp offer bcast */
 188                 .discard = 0,
 189                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 190                 .attrs = {
 191                         {
 192                                 /* udp dest port - 68 (bootp client)*/
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = offsetof(struct udphdr, dest),
 195                                 .val = cpu_to_be32(0x00440000),
 196                                 .mask = cpu_to_be32(0xffff0000),
 197                         },
 198                         {
 199                                 /* dhcp - lsb bytes of client hw address */
 200                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 201                                 .offset = 38,
 202                                 .mask = cpu_to_be32(0xffffffff),
 203                                 /* mark it as special field */
 204                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 205                         },
 206                 },
 207         },
 208         /* last filter must be empty */
 209         {},
 210 };
 211 #endif
 212
 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 214 {
 215         if (!iwl_mvm_is_d0i3_supported(mvm))
 216                 return;
 217
 218         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 219         spin_lock_bh(&mvm->refs_lock);
 220         mvm->refs[ref_type]++;
 221         spin_unlock_bh(&mvm->refs_lock);
 222         iwl_trans_ref(mvm->trans);
 223 }
 224
 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 226 {
 227         if (!iwl_mvm_is_d0i3_supported(mvm))
 228                 return;
 229
 230         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 231         spin_lock_bh(&mvm->refs_lock);
 232         WARN_ON(!mvm->refs[ref_type]--);
 233         spin_unlock_bh(&mvm->refs_lock);
 234         iwl_trans_unref(mvm->trans);
 235 }
 236
 237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 238                                      enum iwl_mvm_ref_type except_ref)
 239 {
 240         int i, j;
 241
 242         if (!iwl_mvm_is_d0i3_supported(mvm))
 243                 return;
 244
 245         spin_lock_bh(&mvm->refs_lock);
 246         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 247                 if (except_ref == i || !mvm->refs[i])
 248                         continue;
 249
 250                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 251                               i, mvm->refs[i]);
 252                 for (j = 0; j < mvm->refs[i]; j++)
 253                         iwl_trans_unref(mvm->trans);
 254                 mvm->refs[i] = 0;
 255         }
 256         spin_unlock_bh(&mvm->refs_lock);
 257 }
 258
 259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 260 {
 261         int i;
 262         bool taken = false;
 263
 264         if (!iwl_mvm_is_d0i3_supported(mvm))
 265                 return true;
 266
 267         spin_lock_bh(&mvm->refs_lock);
 268         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 269                 if (mvm->refs[i]) {
 270                         taken = true;
 271                         break;
 272                 }
 273         }
 274         spin_unlock_bh(&mvm->refs_lock);
 275
 276         return taken;
 277 }
 278
 279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 280 {
 281         iwl_mvm_ref(mvm, ref_type);
 282
 283         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 284                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 285                                 HZ)) {
 286                 WARN_ON_ONCE(1);
 287                 iwl_mvm_unref(mvm, ref_type);
 288                 return -EIO;
 289         }
 290
 291         return 0;
 292 }
 293
 294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 295 {
 296         int i;
 297
 298         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 299         for (i = 0; i < NUM_PHY_CTX; i++) {
 300                 mvm->phy_ctxts[i].id = i;
 301                 mvm->phy_ctxts[i].ref = 0;
 302         }
 303 }
 304
 305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 306                                                   const char *alpha2,
 307                                                   enum iwl_mcc_source src_id,
 308                                                   bool *changed)
 309 {
 310         struct ieee80211_regdomain *regd = NULL;
 311         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 313         struct iwl_mcc_update_resp *resp;
 314
 315         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 316
 317         lockdep_assert_held(&mvm->mutex);
 318
 319         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 320         if (IS_ERR_OR_NULL(resp)) {
 321                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 322                               PTR_RET(resp));
 323                 goto out;
 324         }
 325
 326         if (changed)
 327                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 328
 329         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 330                                       __le32_to_cpu(resp->n_channels),
 331                                       resp->channels,
 332                                       __le16_to_cpu(resp->mcc));
 333         /* Store the return source id */
 334         src_id = resp->source_id;
 335         kfree(resp);
 336         if (IS_ERR_OR_NULL(regd)) {
 337                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 338                               PTR_RET(regd));
 339                 goto out;
 340         }
 341
 342         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 343                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 344         mvm->lar_regdom_set = true;
 345         mvm->mcc_src = src_id;
 346
 347 out:
 348         return regd;
 349 }
 350
 351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 352 {
 353         bool changed;
 354         struct ieee80211_regdomain *regd;
 355
 356         if (!iwl_mvm_is_lar_supported(mvm))
 357                 return;
 358
 359         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 360         if (!IS_ERR_OR_NULL(regd)) {
 361                 /* only update the regulatory core if changed */
 362                 if (changed)
 363                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 364
 365                 kfree(regd);
 366         }
 367 }
 368
 369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 370                                                           bool *changed)
 371 {
 372         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 373                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 374                                      MCC_SOURCE_GET_CURRENT :
 375                                      MCC_SOURCE_OLD_FW, changed);
 376 }
 377
 378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 379 {
 380         enum iwl_mcc_source used_src;
 381         struct ieee80211_regdomain *regd;
 382         const struct ieee80211_regdomain *r =
 383                         rtnl_dereference(mvm->hw->wiphy->regd);
 384
 385         if (!r)
 386                 return 0;
 387
 388         /* save the last source in case we overwrite it below */
 389         used_src = mvm->mcc_src;
 390         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 391                 /* Notify the firmware we support wifi location updates */
 392                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 393                 if (!IS_ERR_OR_NULL(regd))
 394                         kfree(regd);
 395         }
 396
 397         /* Now set our last stored MCC and source */
 398         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, NULL);
 399         if (IS_ERR_OR_NULL(regd))
 400                 return -EIO;
 401
 402         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 403         kfree(regd);
 404
 405         return 0;
 406 }
 407
 408 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 409 {
 410         struct ieee80211_hw *hw = mvm->hw;
 411         int num_mac, ret, i;
 412
 413         /* Tell mac80211 our characteristics */
 414         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 415                     IEEE80211_HW_SPECTRUM_MGMT |
 416                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 417                     IEEE80211_HW_QUEUE_CONTROL |
 418                     IEEE80211_HW_WANT_MONITOR_VIF |
 419                     IEEE80211_HW_SUPPORTS_PS |
 420                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 421                     IEEE80211_HW_AMPDU_AGGREGATION |
 422                     IEEE80211_HW_TIMING_BEACON_ONLY |
 423                     IEEE80211_HW_CONNECTION_MONITOR |
 424                     IEEE80211_HW_CHANCTX_STA_CSA |
 425                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 426
 427         hw->queues = mvm->first_agg_queue;
 428         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 429         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 430                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 431         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 432                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 433         hw->rate_control_algorithm = "iwl-mvm-rs";
 434         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 435         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 436
 437         /*
 438          * Enable 11w if advertised by firmware and software crypto
 439          * is not enabled (as the firmware will interpret some mgmt
 440          * packets, so enabling it with software crypto isn't safe)
 441          */
 442         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 443             !iwlwifi_mod_params.sw_crypto)
 444                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 445
 446         hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 447         hw->wiphy->features |=
 448                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 449                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 450
 451         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 452         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 453         hw->chanctx_data_size = sizeof(u16);
 454
 455         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 456                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 457                 BIT(NL80211_IFTYPE_AP) |
 458                 BIT(NL80211_IFTYPE_P2P_GO) |
 459                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 460                 BIT(NL80211_IFTYPE_ADHOC);
 461
 462         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 463         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 464         if (iwl_mvm_is_lar_supported(mvm))
 465                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 466         else
 467                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 468                                                REGULATORY_DISABLE_BEACON_HINTS;
 469
 470         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 471                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 472
 473         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 474
 475         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 476         hw->wiphy->n_iface_combinations =
 477                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 478
 479         hw->wiphy->max_remain_on_channel_duration = 10000;
 480         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 481         /* we can compensate an offset of up to 3 channels = 15 MHz */
 482         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 483
 484         /* Extract MAC address */
 485         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 486         hw->wiphy->addresses = mvm->addresses;
 487         hw->wiphy->n_addresses = 1;
 488
 489         /* Extract additional MAC addresses if available */
 490         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 491                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 492
 493         for (i = 1; i < num_mac; i++) {
 494                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 495                        ETH_ALEN);
 496                 mvm->addresses[i].addr[5]++;
 497                 hw->wiphy->n_addresses++;
 498         }
 499
 500         iwl_mvm_reset_phy_ctxts(mvm);
 501
 502         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 503
 504         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 505
 506         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 507                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 508                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 509         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 510                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 511                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 512
 513                 if ((mvm->fw->ucode_capa.capa[0] &
 514                      IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 515                     (mvm->fw->ucode_capa.api[0] &
 516                      IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 517                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 518                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 519         }
 520
 521         hw->wiphy->hw_version = mvm->trans->hw_id;
 522
 523         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 524                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 525         else
 526                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 527
 528         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 529                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 530                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 531                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 532                 /* we create the 802.11 header and zero length SSID IE. */
 533                 hw->wiphy->max_sched_scan_ie_len =
 534                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 535         }
 536
 537         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 538                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 539                                NL80211_FEATURE_P2P_GO_OPPPS |
 540                                NL80211_FEATURE_DYNAMIC_SMPS |
 541                                NL80211_FEATURE_STATIC_SMPS |
 542                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 543
 544         if (mvm->fw->ucode_capa.capa[0] &
 545             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 546                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 547         if (mvm->fw->ucode_capa.capa[0] &
 548             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 549                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 550
 551         if (mvm->fw->ucode_capa.capa[0] &
 552             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 553                 hw->wiphy->features |=
 554                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 555
 556         if (mvm->fw->ucode_capa.capa[0] &
 557             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 558                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 559
 560         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 561
 562         /* currently FW API supports only one optional cipher scheme */
 563         if (mvm->fw->cs[0].cipher) {
 564                 mvm->hw->n_cipher_schemes = 1;
 565                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 566         }
 567
 568 #ifdef CONFIG_PM_SLEEP
 569         if (iwl_mvm_is_d0i3_supported(mvm) &&
 570             device_can_wakeup(mvm->trans->dev)) {
 571                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 572                 hw->wiphy->wowlan = &mvm->wowlan;
 573         }
 574
 575         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 576             mvm->trans->ops->d3_suspend &&
 577             mvm->trans->ops->d3_resume &&
 578             device_can_wakeup(mvm->trans->dev)) {
 579                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 580                                      WIPHY_WOWLAN_DISCONNECT |
 581                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 582                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 583                                      WIPHY_WOWLAN_NET_DETECT;
 584                 if (!iwlwifi_mod_params.sw_crypto)
 585                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 586                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 587                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 588
 589                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 590                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 591                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 592                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 593                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 594                 hw->wiphy->wowlan = &mvm->wowlan;
 595         }
 596 #endif
 597
 598 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 599         /* assign default bcast filtering configuration */
 600         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 601 #endif
 602
 603         ret = iwl_mvm_leds_init(mvm);
 604         if (ret)
 605                 return ret;
 606
 607         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 608                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 609                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 610         }
 611
 612         if (mvm->fw->ucode_capa.capa[0] &
 613             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 614                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 615                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 616         }
 617
 618         ret = ieee80211_register_hw(mvm->hw);
 619         if (ret)
 620                 iwl_mvm_leds_exit(mvm);
 621
 622         return ret;
 623 }
 624
 625 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 626                              struct ieee80211_sta *sta,
 627                              struct sk_buff *skb)
 628 {
 629         struct iwl_mvm_sta *mvmsta;
 630         bool defer = false;
 631
 632         /*
 633          * double check the IN_D0I3 flag both before and after
 634          * taking the spinlock, in order to prevent taking
 635          * the spinlock when not needed.
 636          */
 637         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 638                 return false;
 639
 640         spin_lock(&mvm->d0i3_tx_lock);
 641         /*
 642          * testing the flag again ensures the skb dequeue
 643          * loop (on d0i3 exit) hasn't run yet.
 644          */
 645         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 646                 goto out;
 647
 648         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 649         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 650             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 651                 goto out;
 652
 653         __skb_queue_tail(&mvm->d0i3_tx, skb);
 654         ieee80211_stop_queues(mvm->hw);
 655
 656         /* trigger wakeup */
 657         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 658         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 659
 660         defer = true;
 661 out:
 662         spin_unlock(&mvm->d0i3_tx_lock);
 663         return defer;
 664 }
 665
 666 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 667                            struct ieee80211_tx_control *control,
 668                            struct sk_buff *skb)
 669 {
 670         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 671         struct ieee80211_sta *sta = control->sta;
 672         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 673         struct ieee80211_hdr *hdr = (void *)skb->data;
 674
 675         if (iwl_mvm_is_radio_killed(mvm)) {
 676                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 677                 goto drop;
 678         }
 679
 680         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 681             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 682             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 683                 goto drop;
 684
 685         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 686         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 687                      ieee80211_is_mgmt(hdr->frame_control) &&
 688                      !ieee80211_is_deauth(hdr->frame_control) &&
 689                      !ieee80211_is_disassoc(hdr->frame_control) &&
 690                      !ieee80211_is_action(hdr->frame_control)))
 691                 sta = NULL;
 692
 693         if (sta) {
 694                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 695                         return;
 696                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 697                         goto drop;
 698                 return;
 699         }
 700
 701         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 702                 goto drop;
 703         return;
 704  drop:
 705         ieee80211_free_txskb(hw, skb);
 706 }
 707
 708 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 709 {
 710         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 711                 return false;
 712         return true;
 713 }
 714
 715 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 716 {
 717         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 718                 return false;
 719         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 720                 return true;
 721
 722         /* enabled by default */
 723         return true;
 724 }
 725
 726 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 727                                     struct ieee80211_vif *vif,
 728                                     enum ieee80211_ampdu_mlme_action action,
 729                                     struct ieee80211_sta *sta, u16 tid,
 730                                     u16 *ssn, u8 buf_size)
 731 {
 732         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 733         int ret;
 734         bool tx_agg_ref = false;
 735
 736         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 737                      sta->addr, tid, action);
 738
 739         if (!(mvm->nvm_data->sku_cap_11n_enable))
 740                 return -EACCES;
 741
 742         /* return from D0i3 before starting a new Tx aggregation */
 743         switch (action) {
 744         case IEEE80211_AMPDU_TX_START:
 745         case IEEE80211_AMPDU_TX_STOP_CONT:
 746         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 747         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 748         case IEEE80211_AMPDU_TX_OPERATIONAL:
 749                 /*
 750                  * for tx start, wait synchronously until D0i3 exit to
 751                  * get the correct sequence number for the tid.
 752                  * additionally, some other ampdu actions use direct
 753                  * target access, which is not handled automatically
 754                  * by the trans layer (unlike commands), so wait for
 755                  * d0i3 exit in these cases as well.
 756                  */
 757                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 758                 if (ret)
 759                         return ret;
 760
 761                 tx_agg_ref = true;
 762                 break;
 763         default:
 764                 break;
 765         }
 766
 767         mutex_lock(&mvm->mutex);
 768
 769         switch (action) {
 770         case IEEE80211_AMPDU_RX_START:
 771                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 772                         ret = -EINVAL;
 773                         break;
 774                 }
 775                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 776                 break;
 777         case IEEE80211_AMPDU_RX_STOP:
 778                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 779                 break;
 780         case IEEE80211_AMPDU_TX_START:
 781                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 782                         ret = -EINVAL;
 783                         break;
 784                 }
 785                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 786                 break;
 787         case IEEE80211_AMPDU_TX_STOP_CONT:
 788                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 789                 break;
 790         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 791         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 792                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 793                 break;
 794         case IEEE80211_AMPDU_TX_OPERATIONAL:
 795                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 796                 break;
 797         default:
 798                 WARN_ON_ONCE(1);
 799                 ret = -EINVAL;
 800                 break;
 801         }
 802         mutex_unlock(&mvm->mutex);
 803
 804         /*
 805          * If the tid is marked as started, we won't use it for offloaded
 806          * traffic on the next D0i3 entry. It's safe to unref.
 807          */
 808         if (tx_agg_ref)
 809                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 810
 811         return ret;
 812 }
 813
 814 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 815                                      struct ieee80211_vif *vif)
 816 {
 817         struct iwl_mvm *mvm = data;
 818         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 819
 820         mvmvif->uploaded = false;
 821         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 822
 823         spin_lock_bh(&mvm->time_event_lock);
 824         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 825         spin_unlock_bh(&mvm->time_event_lock);
 826
 827         mvmvif->phy_ctxt = NULL;
 828         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 829 }
 830
 831 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 832                                      const void *data, size_t datalen)
 833 {
 834         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 835         ssize_t bytes_read;
 836         ssize_t bytes_read_trans;
 837
 838         if (offset < dump_ptrs->op_mode_len) {
 839                 bytes_read = min_t(ssize_t, count,
 840                                    dump_ptrs->op_mode_len - offset);
 841                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 842                        bytes_read);
 843                 offset += bytes_read;
 844                 count -= bytes_read;
 845
 846                 if (count == 0)
 847                         return bytes_read;
 848         } else {
 849                 bytes_read = 0;
 850         }
 851
 852         if (!dump_ptrs->trans_ptr)
 853                 return bytes_read;
 854
 855         offset -= dump_ptrs->op_mode_len;
 856         bytes_read_trans = min_t(ssize_t, count,
 857                                  dump_ptrs->trans_ptr->len - offset);
 858         memcpy(buffer + bytes_read,
 859                (u8 *)dump_ptrs->trans_ptr->data + offset,
 860                bytes_read_trans);
 861
 862         return bytes_read + bytes_read_trans;
 863 }
 864
 865 static void iwl_mvm_free_coredump(const void *data)
 866 {
 867         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 868
 869         vfree(fw_error_dump->op_mode_ptr);
 870         vfree(fw_error_dump->trans_ptr);
 871         kfree(fw_error_dump);
 872 }
 873
 874 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
 875                                struct iwl_fw_error_dump_data **dump_data)
 876 {
 877         struct iwl_fw_error_dump_fifo *fifo_hdr;
 878         u32 *fifo_data;
 879         u32 fifo_len;
 880         unsigned long flags;
 881         int i, j;
 882
 883         if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
 884                 return;
 885
 886         /* Pull RXF data from all RXFs */
 887         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
 888                 /*
 889                  * Keep aside the additional offset that might be needed for
 890                  * next RXF
 891                  */
 892                 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
 893
 894                 fifo_hdr = (void *)(*dump_data)->data;
 895                 fifo_data = (void *)fifo_hdr->data;
 896                 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
 897
 898                 /* No need to try to read the data if the length is 0 */
 899                 if (fifo_len == 0)
 900                         continue;
 901
 902                 /* Add a TLV for the RXF */
 903                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 904                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 905
 906                 fifo_hdr->fifo_num = cpu_to_le32(i);
 907                 fifo_hdr->available_bytes =
 908                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 909                                                         RXF_RD_D_SPACE +
 910                                                         offset_diff));
 911                 fifo_hdr->wr_ptr =
 912                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 913                                                         RXF_RD_WR_PTR +
 914                                                         offset_diff));
 915                 fifo_hdr->rd_ptr =
 916                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 917                                                         RXF_RD_RD_PTR +
 918                                                         offset_diff));
 919                 fifo_hdr->fence_ptr =
 920                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 921                                                         RXF_RD_FENCE_PTR +
 922                                                         offset_diff));
 923                 fifo_hdr->fence_mode =
 924                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 925                                                         RXF_SET_FENCE_MODE +
 926                                                         offset_diff));
 927
 928                 /* Lock fence */
 929                 iwl_trans_write_prph(mvm->trans,
 930                                      RXF_SET_FENCE_MODE + offset_diff, 0x1);
 931                 /* Set fence pointer to the same place like WR pointer */
 932                 iwl_trans_write_prph(mvm->trans,
 933                                      RXF_LD_WR2FENCE + offset_diff, 0x1);
 934                 /* Set fence offset */
 935                 iwl_trans_write_prph(mvm->trans,
 936                                      RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
 937                                      0x0);
 938
 939                 /* Read FIFO */
 940                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 941                 for (j = 0; j < fifo_len; j++)
 942                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 943                                                          RXF_FIFO_RD_FENCE_INC +
 944                                                          offset_diff);
 945                 *dump_data = iwl_fw_error_next_data(*dump_data);
 946         }
 947
 948         /* Pull TXF data from all TXFs */
 949         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
 950                 /* Mark the number of TXF we're pulling now */
 951                 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
 952
 953                 fifo_hdr = (void *)(*dump_data)->data;
 954                 fifo_data = (void *)fifo_hdr->data;
 955                 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
 956
 957                 /* No need to try to read the data if the length is 0 */
 958                 if (fifo_len == 0)
 959                         continue;
 960
 961                 /* Add a TLV for the FIFO */
 962                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
 963                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
 964
 965                 fifo_hdr->fifo_num = cpu_to_le32(i);
 966                 fifo_hdr->available_bytes =
 967                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 968                                                         TXF_FIFO_ITEM_CNT));
 969                 fifo_hdr->wr_ptr =
 970                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 971                                                         TXF_WR_PTR));
 972                 fifo_hdr->rd_ptr =
 973                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 974                                                         TXF_RD_PTR));
 975                 fifo_hdr->fence_ptr =
 976                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 977                                                         TXF_FENCE_PTR));
 978                 fifo_hdr->fence_mode =
 979                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
 980                                                         TXF_LOCK_FENCE));
 981
 982                 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
 983                 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
 984                                      TXF_WR_PTR);
 985
 986                 /* Dummy-read to advance the read pointer to the head */
 987                 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
 988
 989                 /* Read FIFO */
 990                 fifo_len /= sizeof(u32); /* Size in DWORDS */
 991                 for (j = 0; j < fifo_len; j++)
 992                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
 993                                                           TXF_READ_MODIFY_DATA);
 994                 *dump_data = iwl_fw_error_next_data(*dump_data);
 995         }
 996
 997         iwl_trans_release_nic_access(mvm->trans, &flags);
 998 }
 999
1000 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1001 {
1002         if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1003             !mvm->fw_dump_desc)
1004                 return;
1005
1006         kfree(mvm->fw_dump_desc);
1007         mvm->fw_dump_desc = NULL;
1008 }
1009
1010 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1011 {
1012         struct iwl_fw_error_dump_file *dump_file;
1013         struct iwl_fw_error_dump_data *dump_data;
1014         struct iwl_fw_error_dump_info *dump_info;
1015         struct iwl_fw_error_dump_mem *dump_mem;
1016         struct iwl_fw_error_dump_trigger_desc *dump_trig;
1017         struct iwl_mvm_dump_ptrs *fw_error_dump;
1018         u32 sram_len, sram_ofs;
1019         u32 file_len, fifo_data_len = 0;
1020         u32 smem_len = mvm->cfg->smem_len;
1021         u32 sram2_len = mvm->cfg->dccm2_len;
1022
1023         lockdep_assert_held(&mvm->mutex);
1024
1025         /* W/A for 8000 HW family A-step */
1026         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1027             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_A_STEP) {
1028                 if (smem_len)
1029                         smem_len = 0x38000;
1030
1031                 if (sram2_len)
1032                         sram2_len = 0x10000;
1033         }
1034
1035         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1036         if (!fw_error_dump)
1037                 return;
1038
1039         /* SRAM - include stack CCM if driver knows the values for it */
1040         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1041                 const struct fw_img *img;
1042
1043                 img = &mvm->fw->img[mvm->cur_ucode];
1044                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1045                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1046         } else {
1047                 sram_ofs = mvm->cfg->dccm_offset;
1048                 sram_len = mvm->cfg->dccm_len;
1049         }
1050
1051         /* reading RXF/TXF sizes */
1052         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1053                 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1054                 int i;
1055
1056                 fifo_data_len = 0;
1057
1058                 /* Count RXF size */
1059                 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1060                         if (!mem_cfg->rxfifo_size[i])
1061                                 continue;
1062
1063                         /* Add header info */
1064                         fifo_data_len += mem_cfg->rxfifo_size[i] +
1065                                          sizeof(*dump_data) +
1066                                          sizeof(struct iwl_fw_error_dump_fifo);
1067                 }
1068
1069                 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1070                         if (!mem_cfg->txfifo_size[i])
1071                                 continue;
1072
1073                         /* Add header info */
1074                         fifo_data_len += mem_cfg->txfifo_size[i] +
1075                                          sizeof(*dump_data) +
1076                                          sizeof(struct iwl_fw_error_dump_fifo);
1077                 }
1078         }
1079
1080         file_len = sizeof(*dump_file) +
1081                    sizeof(*dump_data) * 2 +
1082                    sram_len + sizeof(*dump_mem) +
1083                    fifo_data_len +
1084                    sizeof(*dump_info);
1085
1086         if (mvm->fw_dump_desc)
1087                 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1088                             mvm->fw_dump_desc->len;
1089
1090         /* Make room for the SMEM, if it exists */
1091         if (smem_len)
1092                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1093
1094         /* Make room for the secondary SRAM, if it exists */
1095         if (sram2_len)
1096                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1097
1098         dump_file = vzalloc(file_len);
1099         if (!dump_file) {
1100                 kfree(fw_error_dump);
1101                 iwl_mvm_free_fw_dump_desc(mvm);
1102                 return;
1103         }
1104
1105         fw_error_dump->op_mode_ptr = dump_file;
1106
1107         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1108         dump_data = (void *)dump_file->data;
1109
1110         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1111         dump_data->len = cpu_to_le32(sizeof(*dump_info));
1112         dump_info = (void *) dump_data->data;
1113         dump_info->device_family =
1114                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1115                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1116                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1117         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1118         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1119                sizeof(dump_info->fw_human_readable));
1120         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1121                 sizeof(dump_info->dev_human_readable));
1122         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1123                 sizeof(dump_info->bus_human_readable));
1124
1125         dump_data = iwl_fw_error_next_data(dump_data);
1126         /* We only dump the FIFOs if the FW is in error state */
1127         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1128                 iwl_mvm_dump_fifos(mvm, &dump_data);
1129
1130         if (mvm->fw_dump_desc) {
1131                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1132                 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1133                                              mvm->fw_dump_desc->len);
1134                 dump_trig = (void *)dump_data->data;
1135                 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1136                        sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1137
1138                 /* now we can free this copy */
1139                 iwl_mvm_free_fw_dump_desc(mvm);
1140                 dump_data = iwl_fw_error_next_data(dump_data);
1141         }
1142
1143         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1144         dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1145         dump_mem = (void *)dump_data->data;
1146         dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1147         dump_mem->offset = cpu_to_le32(sram_ofs);
1148         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1149                                  sram_len);
1150
1151         if (smem_len) {
1152                 dump_data = iwl_fw_error_next_data(dump_data);
1153                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1154                 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1155                 dump_mem = (void *)dump_data->data;
1156                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1157                 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1158                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1159                                          dump_mem->data, smem_len);
1160         }
1161
1162         if (sram2_len) {
1163                 dump_data = iwl_fw_error_next_data(dump_data);
1164                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1165                 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1166                 dump_mem = (void *)dump_data->data;
1167                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1168                 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1169                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1170                                          dump_mem->data, sram2_len);
1171         }
1172
1173         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1174         fw_error_dump->op_mode_len = file_len;
1175         if (fw_error_dump->trans_ptr)
1176                 file_len += fw_error_dump->trans_ptr->len;
1177         dump_file->file_len = cpu_to_le32(file_len);
1178
1179         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1180                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1181
1182         clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1183 }
1184
1185 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1186         .trig_desc = {
1187                 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1188         },
1189 };
1190
1191 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1192 {
1193         /* clear the D3 reconfig, we only need it to avoid dumping a
1194          * firmware coredump on reconfiguration, we shouldn't do that
1195          * on D3->D0 transition
1196          */
1197         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1198                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1199                 iwl_mvm_fw_error_dump(mvm);
1200         }
1201
1202         /* cleanup all stale references (scan, roc), but keep the
1203          * ucode_down ref until reconfig is complete
1204          */
1205         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1206
1207         iwl_trans_stop_device(mvm->trans);
1208
1209         mvm->scan_status = IWL_MVM_SCAN_NONE;
1210         mvm->ps_disabled = false;
1211         mvm->calibrating = false;
1212
1213         /* just in case one was running */
1214         ieee80211_remain_on_channel_expired(mvm->hw);
1215
1216         ieee80211_iterate_active_interfaces_atomic(
1217                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
1218                 iwl_mvm_cleanup_iterator, mvm);
1219
1220         mvm->p2p_device_vif = NULL;
1221         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1222
1223         iwl_mvm_reset_phy_ctxts(mvm);
1224         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1225         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1226         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1227         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1228         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1229         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1230         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1231         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1232         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1233
1234         ieee80211_wake_queues(mvm->hw);
1235
1236         /* clear any stale d0i3 state */
1237         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1238
1239         mvm->vif_count = 0;
1240         mvm->rx_ba_sessions = 0;
1241         mvm->fw_dbg_conf = FW_DBG_INVALID;
1242
1243         /* keep statistics ticking */
1244         iwl_mvm_accu_radio_stats(mvm);
1245 }
1246
1247 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1248 {
1249         int ret;
1250
1251         lockdep_assert_held(&mvm->mutex);
1252
1253         /* Clean up some internal and mac80211 state on restart */
1254         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1255                 iwl_mvm_restart_cleanup(mvm);
1256
1257         ret = iwl_mvm_up(mvm);
1258
1259         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1260                 /* Something went wrong - we need to finish some cleanup
1261                  * that normally iwl_mvm_mac_restart_complete() below
1262                  * would do.
1263                  */
1264                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1265                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1266         }
1267
1268         return ret;
1269 }
1270
1271 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1272 {
1273         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1274         int ret;
1275
1276         /* Some hw restart cleanups must not hold the mutex */
1277         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1278                 /*
1279                  * Make sure we are out of d0i3. This is needed
1280                  * to make sure the reference accounting is correct
1281                  * (and there is no stale d0i3_exit_work).
1282                  */
1283                 wait_event_timeout(mvm->d0i3_exit_waitq,
1284                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1285                                              &mvm->status),
1286                                    HZ);
1287         }
1288
1289         mutex_lock(&mvm->mutex);
1290         ret = __iwl_mvm_mac_start(mvm);
1291         mutex_unlock(&mvm->mutex);
1292
1293         return ret;
1294 }
1295
1296 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1297 {
1298         int ret;
1299
1300         mutex_lock(&mvm->mutex);
1301
1302         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1303         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1304         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1305         if (ret)
1306                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1307                         ret);
1308
1309         /* allow transport/FW low power modes */
1310         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1311
1312         /*
1313          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1314          * of packets the FW sent out, so we must reconnect.
1315          */
1316         iwl_mvm_teardown_tdls_peers(mvm);
1317
1318         mutex_unlock(&mvm->mutex);
1319 }
1320
1321 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1322 {
1323         bool exit_now;
1324
1325         if (!iwl_mvm_is_d0i3_supported(mvm))
1326                 return;
1327
1328         mutex_lock(&mvm->d0i3_suspend_mutex);
1329         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1330         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1331                                         &mvm->d0i3_suspend_flags);
1332         mutex_unlock(&mvm->d0i3_suspend_mutex);
1333
1334         if (exit_now) {
1335                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1336                 _iwl_mvm_exit_d0i3(mvm);
1337         }
1338
1339         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1340                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1341                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1342                                                   &mvm->status),
1343                                         HZ))
1344                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1345 }
1346
1347 static void
1348 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1349                               enum ieee80211_reconfig_type reconfig_type)
1350 {
1351         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1352
1353         switch (reconfig_type) {
1354         case IEEE80211_RECONFIG_TYPE_RESTART:
1355                 iwl_mvm_restart_complete(mvm);
1356                 break;
1357         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1358                 iwl_mvm_resume_complete(mvm);
1359                 break;
1360         }
1361 }
1362
1363 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1364 {
1365         lockdep_assert_held(&mvm->mutex);
1366
1367         /* firmware counters are obviously reset now, but we shouldn't
1368          * partially track so also clear the fw_reset_accu counters.
1369          */
1370         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1371
1372         /*
1373          * Disallow low power states when the FW is down by taking
1374          * the UCODE_DOWN ref. in case of ongoing hw restart the
1375          * ref is already taken, so don't take it again.
1376          */
1377         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1378                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1379
1380         /* async_handlers_wk is now blocked */
1381
1382         /*
1383          * The work item could be running or queued if the
1384          * ROC time event stops just as we get here.
1385          */
1386         cancel_work_sync(&mvm->roc_done_wk);
1387
1388         iwl_trans_stop_device(mvm->trans);
1389
1390         iwl_mvm_async_handlers_purge(mvm);
1391         /* async_handlers_list is empty and will stay empty: HW is stopped */
1392
1393         /* the fw is stopped, the aux sta is dead: clean up driver state */
1394         iwl_mvm_del_aux_sta(mvm);
1395
1396         /*
1397          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1398          * won't be called in this case).
1399          */
1400         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1401
1402         mvm->ucode_loaded = false;
1403 }
1404
1405 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1406 {
1407         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1408
1409         flush_work(&mvm->d0i3_exit_work);
1410         flush_work(&mvm->async_handlers_wk);
1411         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1412         iwl_mvm_free_fw_dump_desc(mvm);
1413
1414         mutex_lock(&mvm->mutex);
1415         __iwl_mvm_mac_stop(mvm);
1416         mutex_unlock(&mvm->mutex);
1417
1418         /*
1419          * The worker might have been waiting for the mutex, let it run and
1420          * discover that its list is now empty.
1421          */
1422         cancel_work_sync(&mvm->async_handlers_wk);
1423 }
1424
1425 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1426 {
1427         u16 i;
1428
1429         lockdep_assert_held(&mvm->mutex);
1430
1431         for (i = 0; i < NUM_PHY_CTX; i++)
1432                 if (!mvm->phy_ctxts[i].ref)
1433                         return &mvm->phy_ctxts[i];
1434
1435         IWL_ERR(mvm, "No available PHY context\n");
1436         return NULL;
1437 }
1438
1439 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1440                                 s8 tx_power)
1441 {
1442         /* FW is in charge of regulatory enforcement */
1443         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1444                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1445                 .pwr_restriction = cpu_to_le16(tx_power),
1446         };
1447
1448         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1449                                     sizeof(reduce_txpwr_cmd),
1450                                     &reduce_txpwr_cmd);
1451 }
1452
1453 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1454                                      struct ieee80211_vif *vif)
1455 {
1456         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1457         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1458         int ret;
1459
1460         mvmvif->mvm = mvm;
1461
1462         /*
1463          * make sure D0i3 exit is completed, otherwise a target access
1464          * during tx queue configuration could be done when still in
1465          * D0i3 state.
1466          */
1467         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1468         if (ret)
1469                 return ret;
1470
1471         /*
1472          * Not much to do here. The stack will not allow interface
1473          * types or combinations that we didn't advertise, so we
1474          * don't really have to check the types.
1475          */
1476
1477         mutex_lock(&mvm->mutex);
1478
1479         /* make sure that beacon statistics don't go backwards with FW reset */
1480         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1481                 mvmvif->beacon_stats.accu_num_beacons +=
1482                         mvmvif->beacon_stats.num_beacons;
1483
1484         /* Allocate resources for the MAC context, and add it to the fw  */
1485         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1486         if (ret)
1487                 goto out_unlock;
1488
1489         /* Counting number of interfaces is needed for legacy PM */
1490         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1491                 mvm->vif_count++;
1492
1493         /*
1494          * The AP binding flow can be done only after the beacon
1495          * template is configured (which happens only in the mac80211
1496          * start_ap() flow), and adding the broadcast station can happen
1497          * only after the binding.
1498          * In addition, since modifying the MAC before adding a bcast
1499          * station is not allowed by the FW, delay the adding of MAC context to
1500          * the point where we can also add the bcast station.
1501          * In short: there's not much we can do at this point, other than
1502          * allocating resources :)
1503          */
1504         if (vif->type == NL80211_IFTYPE_AP ||
1505             vif->type == NL80211_IFTYPE_ADHOC) {
1506                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1507                 if (ret) {
1508                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1509                         goto out_release;
1510                 }
1511
1512                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1513                 goto out_unlock;
1514         }
1515
1516         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1517         if (ret)
1518                 goto out_release;
1519
1520         ret = iwl_mvm_power_update_mac(mvm);
1521         if (ret)
1522                 goto out_remove_mac;
1523
1524         /* beacon filtering */
1525         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1526         if (ret)
1527                 goto out_remove_mac;
1528
1529         if (!mvm->bf_allowed_vif &&
1530             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1531                 mvm->bf_allowed_vif = mvmvif;
1532                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1533                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1534         }
1535
1536         /*
1537          * P2P_DEVICE interface does not have a channel context assigned to it,
1538          * so a dedicated PHY context is allocated to it and the corresponding
1539          * MAC context is bound to it at this stage.
1540          */
1541         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1542
1543                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1544                 if (!mvmvif->phy_ctxt) {
1545                         ret = -ENOSPC;
1546                         goto out_free_bf;
1547                 }
1548
1549                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1550                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1551                 if (ret)
1552                         goto out_unref_phy;
1553
1554                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1555                 if (ret)
1556                         goto out_unbind;
1557
1558                 /* Save a pointer to p2p device vif, so it can later be used to
1559                  * update the p2p device MAC when a GO is started/stopped */
1560                 mvm->p2p_device_vif = vif;
1561         }
1562
1563         iwl_mvm_vif_dbgfs_register(mvm, vif);
1564         goto out_unlock;
1565
1566  out_unbind:
1567         iwl_mvm_binding_remove_vif(mvm, vif);
1568  out_unref_phy:
1569         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1570  out_free_bf:
1571         if (mvm->bf_allowed_vif == mvmvif) {
1572                 mvm->bf_allowed_vif = NULL;
1573                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1574                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1575         }
1576  out_remove_mac:
1577         mvmvif->phy_ctxt = NULL;
1578         iwl_mvm_mac_ctxt_remove(mvm, vif);
1579  out_release:
1580         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1581                 mvm->vif_count--;
1582
1583         iwl_mvm_mac_ctxt_release(mvm, vif);
1584  out_unlock:
1585         mutex_unlock(&mvm->mutex);
1586
1587         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1588
1589         return ret;
1590 }
1591
1592 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1593                                         struct ieee80211_vif *vif)
1594 {
1595         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1596
1597         if (tfd_msk) {
1598                 mutex_lock(&mvm->mutex);
1599                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1600                 mutex_unlock(&mvm->mutex);
1601         }
1602
1603         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1604                 /*
1605                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1606                  * We assume here that all the packets sent to the OFFCHANNEL
1607                  * queue are sent in ROC session.
1608                  */
1609                 flush_work(&mvm->roc_done_wk);
1610         } else {
1611                 /*
1612                  * By now, all the AC queues are empty. The AGG queues are
1613                  * empty too. We already got all the Tx responses for all the
1614                  * packets in the queues. The drain work can have been
1615                  * triggered. Flush it.
1616                  */
1617                 flush_work(&mvm->sta_drained_wk);
1618         }
1619 }
1620
1621 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1622                                          struct ieee80211_vif *vif)
1623 {
1624         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1625         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1626
1627         iwl_mvm_prepare_mac_removal(mvm, vif);
1628
1629         mutex_lock(&mvm->mutex);
1630
1631         if (mvm->bf_allowed_vif == mvmvif) {
1632                 mvm->bf_allowed_vif = NULL;
1633                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1634                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1635         }
1636
1637         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1638
1639         /*
1640          * For AP/GO interface, the tear down of the resources allocated to the
1641          * interface is be handled as part of the stop_ap flow.
1642          */
1643         if (vif->type == NL80211_IFTYPE_AP ||
1644             vif->type == NL80211_IFTYPE_ADHOC) {
1645 #ifdef CONFIG_NL80211_TESTMODE
1646                 if (vif == mvm->noa_vif) {
1647                         mvm->noa_vif = NULL;
1648                         mvm->noa_duration = 0;
1649                 }
1650 #endif
1651                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1652                 goto out_release;
1653         }
1654
1655         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1656                 mvm->p2p_device_vif = NULL;
1657                 iwl_mvm_rm_bcast_sta(mvm, vif);
1658                 iwl_mvm_binding_remove_vif(mvm, vif);
1659                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1660                 mvmvif->phy_ctxt = NULL;
1661         }
1662
1663         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1664                 mvm->vif_count--;
1665
1666         iwl_mvm_power_update_mac(mvm);
1667         iwl_mvm_mac_ctxt_remove(mvm, vif);
1668
1669 out_release:
1670         iwl_mvm_mac_ctxt_release(mvm, vif);
1671         mutex_unlock(&mvm->mutex);
1672 }
1673
1674 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1675 {
1676         return 0;
1677 }
1678
1679 struct iwl_mvm_mc_iter_data {
1680         struct iwl_mvm *mvm;
1681         int port_id;
1682 };
1683
1684 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1685                                       struct ieee80211_vif *vif)
1686 {
1687         struct iwl_mvm_mc_iter_data *data = _data;
1688         struct iwl_mvm *mvm = data->mvm;
1689         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1690         int ret, len;
1691
1692         /* if we don't have free ports, mcast frames will be dropped */
1693         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1694                 return;
1695
1696         if (vif->type != NL80211_IFTYPE_STATION ||
1697             !vif->bss_conf.assoc)
1698                 return;
1699
1700         cmd->port_id = data->port_id++;
1701         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1702         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1703
1704         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1705         if (ret)
1706                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1707 }
1708
1709 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1710 {
1711         struct iwl_mvm_mc_iter_data iter_data = {
1712                 .mvm = mvm,
1713         };
1714
1715         lockdep_assert_held(&mvm->mutex);
1716
1717         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1718                 return;
1719
1720         ieee80211_iterate_active_interfaces_atomic(
1721                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1722                 iwl_mvm_mc_iface_iterator, &iter_data);
1723 }
1724
1725 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1726                                      struct netdev_hw_addr_list *mc_list)
1727 {
1728         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1729         struct iwl_mcast_filter_cmd *cmd;
1730         struct netdev_hw_addr *addr;
1731         int addr_count;
1732         bool pass_all;
1733         int len;
1734
1735         addr_count = netdev_hw_addr_list_count(mc_list);
1736         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1737                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1738         if (pass_all)
1739                 addr_count = 0;
1740
1741         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1742         cmd = kzalloc(len, GFP_ATOMIC);
1743         if (!cmd)
1744                 return 0;
1745
1746         if (pass_all) {
1747                 cmd->pass_all = 1;
1748                 return (u64)(unsigned long)cmd;
1749         }
1750
1751         netdev_hw_addr_list_for_each(addr, mc_list) {
1752                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1753                                    cmd->count, addr->addr);
1754                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1755                        addr->addr, ETH_ALEN);
1756                 cmd->count++;
1757         }
1758
1759         return (u64)(unsigned long)cmd;
1760 }
1761
1762 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1763                                      unsigned int changed_flags,
1764                                      unsigned int *total_flags,
1765                                      u64 multicast)
1766 {
1767         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1768         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1769
1770         mutex_lock(&mvm->mutex);
1771
1772         /* replace previous configuration */
1773         kfree(mvm->mcast_filter_cmd);
1774         mvm->mcast_filter_cmd = cmd;
1775
1776         if (!cmd)
1777                 goto out;
1778
1779         iwl_mvm_recalc_multicast(mvm);
1780 out:
1781         mutex_unlock(&mvm->mutex);
1782         *total_flags = 0;
1783 }
1784
1785 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1786 struct iwl_bcast_iter_data {
1787         struct iwl_mvm *mvm;
1788         struct iwl_bcast_filter_cmd *cmd;
1789         u8 current_filter;
1790 };
1791
1792 static void
1793 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1794                          const struct iwl_fw_bcast_filter *in_filter,
1795                          struct iwl_fw_bcast_filter *out_filter)
1796 {
1797         struct iwl_fw_bcast_filter_attr *attr;
1798         int i;
1799
1800         memcpy(out_filter, in_filter, sizeof(*out_filter));
1801
1802         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1803                 attr = &out_filter->attrs[i];
1804
1805                 if (!attr->mask)
1806                         break;
1807
1808                 switch (attr->reserved1) {
1809                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1810                         if (vif->bss_conf.arp_addr_cnt != 1) {
1811                                 attr->mask = 0;
1812                                 continue;
1813                         }
1814
1815                         attr->val = vif->bss_conf.arp_addr_list[0];
1816                         break;
1817                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1818                         attr->val = *(__be32 *)&vif->addr[2];
1819                         break;
1820                 default:
1821                         break;
1822                 }
1823                 attr->reserved1 = 0;
1824                 out_filter->num_attrs++;
1825         }
1826 }
1827
1828 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1829                                           struct ieee80211_vif *vif)
1830 {
1831         struct iwl_bcast_iter_data *data = _data;
1832         struct iwl_mvm *mvm = data->mvm;
1833         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1834         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1835         struct iwl_fw_bcast_mac *bcast_mac;
1836         int i;
1837
1838         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1839                 return;
1840
1841         bcast_mac = &cmd->macs[mvmvif->id];
1842
1843         /*
1844          * enable filtering only for associated stations, but not for P2P
1845          * Clients
1846          */
1847         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1848             !vif->bss_conf.assoc)
1849                 return;
1850
1851         bcast_mac->default_discard = 1;
1852
1853         /* copy all configured filters */
1854         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1855                 /*
1856                  * Make sure we don't exceed our filters limit.
1857                  * if there is still a valid filter to be configured,
1858                  * be on the safe side and just allow bcast for this mac.
1859                  */
1860                 if (WARN_ON_ONCE(data->current_filter >=
1861                                  ARRAY_SIZE(cmd->filters))) {
1862                         bcast_mac->default_discard = 0;
1863                         bcast_mac->attached_filters = 0;
1864                         break;
1865                 }
1866
1867                 iwl_mvm_set_bcast_filter(vif,
1868                                          &mvm->bcast_filters[i],
1869                                          &cmd->filters[data->current_filter]);
1870
1871                 /* skip current filter if it contains no attributes */
1872                 if (!cmd->filters[data->current_filter].num_attrs)
1873                         continue;
1874
1875                 /* attach the filter to current mac */
1876                 bcast_mac->attached_filters |=
1877                                 cpu_to_le16(BIT(data->current_filter));
1878
1879                 data->current_filter++;
1880         }
1881 }
1882
1883 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1884                                     struct iwl_bcast_filter_cmd *cmd)
1885 {
1886         struct iwl_bcast_iter_data iter_data = {
1887                 .mvm = mvm,
1888                 .cmd = cmd,
1889         };
1890
1891         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1892                 return false;
1893
1894         memset(cmd, 0, sizeof(*cmd));
1895         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1896         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1897
1898 #ifdef CONFIG_IWLWIFI_DEBUGFS
1899         /* use debugfs filters/macs if override is configured */
1900         if (mvm->dbgfs_bcast_filtering.override) {
1901                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1902                        sizeof(cmd->filters));
1903                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1904                        sizeof(cmd->macs));
1905                 return true;
1906         }
1907 #endif
1908
1909         /* if no filters are configured, do nothing */
1910         if (!mvm->bcast_filters)
1911                 return false;
1912
1913         /* configure and attach these filters for each associated sta vif */
1914         ieee80211_iterate_active_interfaces(
1915                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1916                 iwl_mvm_bcast_filter_iterator, &iter_data);
1917
1918         return true;
1919 }
1920 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1921                                           struct ieee80211_vif *vif)
1922 {
1923         struct iwl_bcast_filter_cmd cmd;
1924
1925         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1926                 return 0;
1927
1928         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1929                 return 0;
1930
1931         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1932                                     sizeof(cmd), &cmd);
1933 }
1934 #else
1935 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1936                                                  struct ieee80211_vif *vif)
1937 {
1938         return 0;
1939 }
1940 #endif
1941
1942 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1943                                              struct ieee80211_vif *vif,
1944                                              struct ieee80211_bss_conf *bss_conf,
1945                                              u32 changes)
1946 {
1947         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1948         int ret;
1949
1950         /*
1951          * Re-calculate the tsf id, as the master-slave relations depend on the
1952          * beacon interval, which was not known when the station interface was
1953          * added.
1954          */
1955         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1956                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1957
1958         /*
1959          * If we're not associated yet, take the (new) BSSID before associating
1960          * so the firmware knows. If we're already associated, then use the old
1961          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1962          * branch for disassociation below.
1963          */
1964         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1965                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1966
1967         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1968         if (ret)
1969                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1970
1971         /* after sending it once, adopt mac80211 data */
1972         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1973         mvmvif->associated = bss_conf->assoc;
1974
1975         if (changes & BSS_CHANGED_ASSOC) {
1976                 if (bss_conf->assoc) {
1977                         /* clear statistics to get clean beacon counter */
1978                         iwl_mvm_request_statistics(mvm, true);
1979                         memset(&mvmvif->beacon_stats, 0,
1980                                sizeof(mvmvif->beacon_stats));
1981
1982                         /* add quota for this interface */
1983                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1984                         if (ret) {
1985                                 IWL_ERR(mvm, "failed to update quotas\n");
1986                                 return;
1987                         }
1988
1989                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1990                                      &mvm->status)) {
1991                                 /*
1992                                  * If we're restarting then the firmware will
1993                                  * obviously have lost synchronisation with
1994                                  * the AP. It will attempt to synchronise by
1995                                  * itself, but we can make it more reliable by
1996                                  * scheduling a session protection time event.
1997                                  *
1998                                  * The firmware needs to receive a beacon to
1999                                  * catch up with synchronisation, use 110% of
2000                                  * the beacon interval.
2001                                  *
2002                                  * Set a large maximum delay to allow for more
2003                                  * than a single interface.
2004                                  */
2005                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2006                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2007                                                         5 * dur, false);
2008                         }
2009
2010                         iwl_mvm_sf_update(mvm, vif, false);
2011                         iwl_mvm_power_vif_assoc(mvm, vif);
2012                         if (vif->p2p) {
2013                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2014                                 iwl_mvm_update_smps(mvm, vif,
2015                                                     IWL_MVM_SMPS_REQ_PROT,
2016                                                     IEEE80211_SMPS_DYNAMIC);
2017                         }
2018                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2019                         /*
2020                          * If update fails - SF might be running in associated
2021                          * mode while disassociated - which is forbidden.
2022                          */
2023                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2024                                   "Failed to update SF upon disassociation\n");
2025
2026                         /* remove AP station now that the MAC is unassoc */
2027                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2028                         if (ret)
2029                                 IWL_ERR(mvm, "failed to remove AP station\n");
2030
2031                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2032                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2033                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2034                         /* remove quota for this interface */
2035                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2036                         if (ret)
2037                                 IWL_ERR(mvm, "failed to update quotas\n");
2038
2039                         if (vif->p2p)
2040                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2041
2042                         /* this will take the cleared BSSID from bss_conf */
2043                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2044                         if (ret)
2045                                 IWL_ERR(mvm,
2046                                         "failed to update MAC %pM (clear after unassoc)\n",
2047                                         vif->addr);
2048                 }
2049
2050                 iwl_mvm_recalc_multicast(mvm);
2051                 iwl_mvm_configure_bcast_filter(mvm, vif);
2052
2053                 /* reset rssi values */
2054                 mvmvif->bf_data.ave_beacon_signal = 0;
2055
2056                 iwl_mvm_bt_coex_vif_change(mvm);
2057                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2058                                     IEEE80211_SMPS_AUTOMATIC);
2059         } else if (changes & BSS_CHANGED_BEACON_INFO) {
2060                 /*
2061                  * We received a beacon _after_ association so
2062                  * remove the session protection.
2063                  */
2064                 iwl_mvm_remove_time_event(mvm, mvmvif,
2065                                           &mvmvif->time_event_data);
2066         }
2067
2068         if (changes & BSS_CHANGED_BEACON_INFO) {
2069                 iwl_mvm_sf_update(mvm, vif, false);
2070                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2071         }
2072
2073         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2074                 ret = iwl_mvm_power_update_mac(mvm);
2075                 if (ret)
2076                         IWL_ERR(mvm, "failed to update power mode\n");
2077         }
2078
2079         if (changes & BSS_CHANGED_TXPOWER) {
2080                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2081                                 bss_conf->txpower);
2082                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2083         }
2084
2085         if (changes & BSS_CHANGED_CQM) {
2086                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2087                 /* reset cqm events tracking */
2088                 mvmvif->bf_data.last_cqm_event = 0;
2089                 if (mvmvif->bf_data.bf_enabled) {
2090                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2091                         if (ret)
2092                                 IWL_ERR(mvm,
2093                                         "failed to update CQM thresholds\n");
2094                 }
2095         }
2096
2097         if (changes & BSS_CHANGED_ARP_FILTER) {
2098                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2099                 iwl_mvm_configure_bcast_filter(mvm, vif);
2100         }
2101 }
2102
2103 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2104                                  struct ieee80211_vif *vif)
2105 {
2106         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2107         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2108         int ret;
2109
2110         /*
2111          * iwl_mvm_mac_ctxt_add() might read directly from the device
2112          * (the system time), so make sure it is available.
2113          */
2114         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2115         if (ret)
2116                 return ret;
2117
2118         mutex_lock(&mvm->mutex);
2119
2120         /* Send the beacon template */
2121         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2122         if (ret)
2123                 goto out_unlock;
2124
2125         /*
2126          * Re-calculate the tsf id, as the master-slave relations depend on the
2127          * beacon interval, which was not known when the AP interface was added.
2128          */
2129         if (vif->type == NL80211_IFTYPE_AP)
2130                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2131
2132         /* Add the mac context */
2133         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2134         if (ret)
2135                 goto out_unlock;
2136
2137         /* Perform the binding */
2138         ret = iwl_mvm_binding_add_vif(mvm, vif);
2139         if (ret)
2140                 goto out_remove;
2141
2142         /* Send the bcast station. At this stage the TBTT and DTIM time events
2143          * are added and applied to the scheduler */
2144         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2145         if (ret)
2146                 goto out_unbind;
2147
2148         /* must be set before quota calculations */
2149         mvmvif->ap_ibss_active = true;
2150
2151         /* power updated needs to be done before quotas */
2152         iwl_mvm_power_update_mac(mvm);
2153
2154         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2155         if (ret)
2156                 goto out_quota_failed;
2157
2158         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2159         if (vif->p2p && mvm->p2p_device_vif)
2160                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2161
2162         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2163
2164         iwl_mvm_bt_coex_vif_change(mvm);
2165
2166         /* we don't support TDLS during DCM */
2167         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2168                 iwl_mvm_teardown_tdls_peers(mvm);
2169
2170         mutex_unlock(&mvm->mutex);
2171         return 0;
2172
2173 out_quota_failed:
2174         iwl_mvm_power_update_mac(mvm);
2175         mvmvif->ap_ibss_active = false;
2176         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2177 out_unbind:
2178         iwl_mvm_binding_remove_vif(mvm, vif);
2179 out_remove:
2180         iwl_mvm_mac_ctxt_remove(mvm, vif);
2181 out_unlock:
2182         mutex_unlock(&mvm->mutex);
2183         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2184         return ret;
2185 }
2186
2187 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2188                                  struct ieee80211_vif *vif)
2189 {
2190         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2191         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2192
2193         iwl_mvm_prepare_mac_removal(mvm, vif);
2194
2195         mutex_lock(&mvm->mutex);
2196
2197         /* Handle AP stop while in CSA */
2198         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2199                 iwl_mvm_remove_time_event(mvm, mvmvif,
2200                                           &mvmvif->time_event_data);
2201                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2202         }
2203
2204         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2205                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2206                 mvm->csa_tx_block_bcn_timeout = 0;
2207         }
2208
2209         mvmvif->ap_ibss_active = false;
2210         mvm->ap_last_beacon_gp2 = 0;
2211
2212         iwl_mvm_bt_coex_vif_change(mvm);
2213
2214         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2215
2216         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2217         if (vif->p2p && mvm->p2p_device_vif)
2218                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2219
2220         iwl_mvm_update_quotas(mvm, false, NULL);
2221         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2222         iwl_mvm_binding_remove_vif(mvm, vif);
2223
2224         iwl_mvm_power_update_mac(mvm);
2225
2226         iwl_mvm_mac_ctxt_remove(mvm, vif);
2227
2228         mutex_unlock(&mvm->mutex);
2229 }
2230
2231 static void
2232 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2233                                  struct ieee80211_vif *vif,
2234                                  struct ieee80211_bss_conf *bss_conf,
2235                                  u32 changes)
2236 {
2237         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2238
2239         /* Changes will be applied when the AP/IBSS is started */
2240         if (!mvmvif->ap_ibss_active)
2241                 return;
2242
2243         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2244                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2245             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2246                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2247
2248         /* Need to send a new beacon template to the FW */
2249         if (changes & BSS_CHANGED_BEACON &&
2250             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2251                 IWL_WARN(mvm, "Failed updating beacon data\n");
2252
2253         if (changes & BSS_CHANGED_TXPOWER) {
2254                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2255                                 bss_conf->txpower);
2256                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2257         }
2258
2259 }
2260
2261 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2262                                      struct ieee80211_vif *vif,
2263                                      struct ieee80211_bss_conf *bss_conf,
2264                                      u32 changes)
2265 {
2266         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2267
2268         /*
2269          * iwl_mvm_bss_info_changed_station() might call
2270          * iwl_mvm_protect_session(), which reads directly from
2271          * the device (the system time), so make sure it is available.
2272          */
2273         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2274                 return;
2275
2276         mutex_lock(&mvm->mutex);
2277
2278         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2279                 iwl_mvm_scan_offload_stop(mvm, true);
2280
2281         switch (vif->type) {
2282         case NL80211_IFTYPE_STATION:
2283                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2284                 break;
2285         case NL80211_IFTYPE_AP:
2286         case NL80211_IFTYPE_ADHOC:
2287                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2288                 break;
2289         default:
2290                 /* shouldn't happen */
2291                 WARN_ON_ONCE(1);
2292         }
2293
2294         mutex_unlock(&mvm->mutex);
2295         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2296 }
2297
2298 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
2299                                           enum iwl_scan_status scan_type)
2300 {
2301         int ret;
2302         bool wait_for_handlers = false;
2303
2304         mutex_lock(&mvm->mutex);
2305
2306         if (mvm->scan_status != scan_type) {
2307                 ret = 0;
2308                 /* make sure there are no pending notifications */
2309                 wait_for_handlers = true;
2310                 goto out;
2311         }
2312
2313         switch (scan_type) {
2314         case IWL_MVM_SCAN_SCHED:
2315                 ret = iwl_mvm_scan_offload_stop(mvm, true);
2316                 break;
2317         case IWL_MVM_SCAN_OS:
2318                 ret = iwl_mvm_cancel_scan(mvm);
2319                 break;
2320         case IWL_MVM_SCAN_NONE:
2321         default:
2322                 WARN_ON_ONCE(1);
2323                 ret = -EINVAL;
2324                 break;
2325         }
2326         if (ret)
2327                 goto out;
2328
2329         wait_for_handlers = true;
2330 out:
2331         mutex_unlock(&mvm->mutex);
2332
2333         /* make sure we consume the completion notification */
2334         if (wait_for_handlers)
2335                 iwl_mvm_wait_for_async_handlers(mvm);
2336
2337         return ret;
2338 }
2339 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2340                                struct ieee80211_vif *vif,
2341                                struct ieee80211_scan_request *hw_req)
2342 {
2343         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2344         struct cfg80211_scan_request *req = &hw_req->req;
2345         int ret;
2346
2347         if (req->n_channels == 0 ||
2348             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
2349                 return -EINVAL;
2350
2351         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2352                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
2353                 if (ret)
2354                         return ret;
2355         }
2356
2357         mutex_lock(&mvm->mutex);
2358
2359         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2360                 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2361                 ret = -EBUSY;
2362                 goto out;
2363         }
2364
2365         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2366                 ret = -EBUSY;
2367                 goto out;
2368         }
2369
2370         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
2371
2372         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
2373                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
2374         else
2375                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
2376
2377         if (ret)
2378                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
2379 out:
2380         mutex_unlock(&mvm->mutex);
2381         return ret;
2382 }
2383
2384 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2385                                        struct ieee80211_vif *vif)
2386 {
2387         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2388
2389         mutex_lock(&mvm->mutex);
2390
2391         /* Due to a race condition, it's possible that mac80211 asks
2392          * us to stop a hw_scan when it's already stopped.  This can
2393          * happen, for instance, if we stopped the scan ourselves,
2394          * called ieee80211_scan_completed() and the userspace called
2395          * cancel scan scan before ieee80211_scan_work() could run.
2396          * To handle that, simply return if the scan is not running.
2397         */
2398         /* FIXME: for now, we ignore this race for UMAC scans, since
2399          * they don't set the scan_status.
2400          */
2401         if ((mvm->scan_status == IWL_MVM_SCAN_OS) ||
2402             (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2403                 iwl_mvm_cancel_scan(mvm);
2404
2405         mutex_unlock(&mvm->mutex);
2406 }
2407
2408 static void
2409 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2410                                   struct ieee80211_sta *sta, u16 tids,
2411                                   int num_frames,
2412                                   enum ieee80211_frame_release_type reason,
2413                                   bool more_data)
2414 {
2415         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2416
2417         /* Called when we need to transmit (a) frame(s) from mac80211 */
2418
2419         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2420                                           tids, more_data, false);
2421 }
2422
2423 static void
2424 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2425                                     struct ieee80211_sta *sta, u16 tids,
2426                                     int num_frames,
2427                                     enum ieee80211_frame_release_type reason,
2428                                     bool more_data)
2429 {
2430         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2431
2432         /* Called when we need to transmit (a) frame(s) from agg queue */
2433
2434         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2435                                           tids, more_data, true);
2436 }
2437
2438 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2439                                    struct ieee80211_vif *vif,
2440                                    enum sta_notify_cmd cmd,
2441                                    struct ieee80211_sta *sta)
2442 {
2443         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2444         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2445         unsigned long txqs = 0, tids = 0;
2446         int tid;
2447
2448         spin_lock_bh(&mvmsta->lock);
2449         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2450                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2451
2452                 if (tid_data->state != IWL_AGG_ON &&
2453                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2454                         continue;
2455
2456                 __set_bit(tid_data->txq_id, &txqs);
2457
2458                 if (iwl_mvm_tid_queued(tid_data) == 0)
2459                         continue;
2460
2461                 __set_bit(tid, &tids);
2462         }
2463
2464         switch (cmd) {
2465         case STA_NOTIFY_SLEEP:
2466                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2467                         ieee80211_sta_block_awake(hw, sta, true);
2468
2469                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2470                         ieee80211_sta_set_buffered(sta, tid, true);
2471
2472                 if (txqs)
2473                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2474                 /*
2475                  * The fw updates the STA to be asleep. Tx packets on the Tx
2476                  * queues to this station will not be transmitted. The fw will
2477                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2478                  */
2479                 break;
2480         case STA_NOTIFY_AWAKE:
2481                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2482                         break;
2483
2484                 if (txqs)
2485                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2486                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2487                 break;
2488         default:
2489                 break;
2490         }
2491         spin_unlock_bh(&mvmsta->lock);
2492 }
2493
2494 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2495                                        struct ieee80211_vif *vif,
2496                                        struct ieee80211_sta *sta)
2497 {
2498         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2499         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2500
2501         /*
2502          * This is called before mac80211 does RCU synchronisation,
2503          * so here we already invalidate our internal RCU-protected
2504          * station pointer. The rest of the code will thus no longer
2505          * be able to find the station this way, and we don't rely
2506          * on further RCU synchronisation after the sta_state()
2507          * callback deleted the station.
2508          */
2509         mutex_lock(&mvm->mutex);
2510         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2511                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2512                                    ERR_PTR(-ENOENT));
2513         mutex_unlock(&mvm->mutex);
2514 }
2515
2516 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2517                                 const u8 *bssid)
2518 {
2519         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2520                 return;
2521
2522         if (iwlwifi_mod_params.uapsd_disable) {
2523                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2524                 return;
2525         }
2526
2527         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2528 }
2529
2530 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2531                                  struct ieee80211_vif *vif,
2532                                  struct ieee80211_sta *sta,
2533                                  enum ieee80211_sta_state old_state,
2534                                  enum ieee80211_sta_state new_state)
2535 {
2536         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2537         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2538         int ret;
2539
2540         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2541                            sta->addr, old_state, new_state);
2542
2543         /* this would be a mac80211 bug ... but don't crash */
2544         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2545                 return -EINVAL;
2546
2547         /* if a STA is being removed, reuse its ID */
2548         flush_work(&mvm->sta_drained_wk);
2549
2550         mutex_lock(&mvm->mutex);
2551         if (old_state == IEEE80211_STA_NOTEXIST &&
2552             new_state == IEEE80211_STA_NONE) {
2553                 /*
2554                  * Firmware bug - it'll crash if the beacon interval is less
2555                  * than 16. We can't avoid connecting at all, so refuse the
2556                  * station state change, this will cause mac80211 to abandon
2557                  * attempts to connect to this AP, and eventually wpa_s will
2558                  * blacklist the AP...
2559                  */
2560                 if (vif->type == NL80211_IFTYPE_STATION &&
2561                     vif->bss_conf.beacon_int < 16) {
2562                         IWL_ERR(mvm,
2563                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2564                                 sta->addr, vif->bss_conf.beacon_int);
2565                         ret = -EINVAL;
2566                         goto out_unlock;
2567                 }
2568
2569                 if (sta->tdls &&
2570                     (vif->p2p ||
2571                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2572                                                 IWL_MVM_TDLS_STA_COUNT ||
2573                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2574                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2575                         ret = -EBUSY;
2576                         goto out_unlock;
2577                 }
2578
2579                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2580                 if (sta->tdls && ret == 0)
2581                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2582         } else if (old_state == IEEE80211_STA_NONE &&
2583                    new_state == IEEE80211_STA_AUTH) {
2584                 /*
2585                  * EBS may be disabled due to previous failures reported by FW.
2586                  * Reset EBS status here assuming environment has been changed.
2587                  */
2588                 mvm->last_ebs_successful = true;
2589                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2590                 ret = 0;
2591         } else if (old_state == IEEE80211_STA_AUTH &&
2592                    new_state == IEEE80211_STA_ASSOC) {
2593                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2594                 if (ret == 0)
2595                         iwl_mvm_rs_rate_init(mvm, sta,
2596                                              mvmvif->phy_ctxt->channel->band,
2597                                              true);
2598         } else if (old_state == IEEE80211_STA_ASSOC &&
2599                    new_state == IEEE80211_STA_AUTHORIZED) {
2600
2601                 /* we don't support TDLS during DCM */
2602                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2603                         iwl_mvm_teardown_tdls_peers(mvm);
2604
2605                 /* enable beacon filtering */
2606                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2607                 ret = 0;
2608         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2609                    new_state == IEEE80211_STA_ASSOC) {
2610                 /* disable beacon filtering */
2611                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2612                 ret = 0;
2613         } else if (old_state == IEEE80211_STA_ASSOC &&
2614                    new_state == IEEE80211_STA_AUTH) {
2615                 ret = 0;
2616         } else if (old_state == IEEE80211_STA_AUTH &&
2617                    new_state == IEEE80211_STA_NONE) {
2618                 ret = 0;
2619         } else if (old_state == IEEE80211_STA_NONE &&
2620                    new_state == IEEE80211_STA_NOTEXIST) {
2621                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2622                 if (sta->tdls)
2623                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2624         } else {
2625                 ret = -EIO;
2626         }
2627  out_unlock:
2628         mutex_unlock(&mvm->mutex);
2629
2630         if (sta->tdls && ret == 0) {
2631                 if (old_state == IEEE80211_STA_NOTEXIST &&
2632                     new_state == IEEE80211_STA_NONE)
2633                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2634                 else if (old_state == IEEE80211_STA_NONE &&
2635                          new_state == IEEE80211_STA_NOTEXIST)
2636                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2637         }
2638
2639         return ret;
2640 }
2641
2642 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2643 {
2644         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2645
2646         mvm->rts_threshold = value;
2647
2648         return 0;
2649 }
2650
2651 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2652                                   struct ieee80211_vif *vif,
2653                                   struct ieee80211_sta *sta, u32 changed)
2654 {
2655         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2656
2657         if (vif->type == NL80211_IFTYPE_STATION &&
2658             changed & IEEE80211_RC_NSS_CHANGED)
2659                 iwl_mvm_sf_update(mvm, vif, false);
2660 }
2661
2662 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2663                                struct ieee80211_vif *vif, u16 ac,
2664                                const struct ieee80211_tx_queue_params *params)
2665 {
2666         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2667         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2668
2669         mvmvif->queue_params[ac] = *params;
2670
2671         /*
2672          * No need to update right away, we'll get BSS_CHANGED_QOS
2673          * The exception is P2P_DEVICE interface which needs immediate update.
2674          */
2675         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2676                 int ret;
2677
2678                 mutex_lock(&mvm->mutex);
2679                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2680                 mutex_unlock(&mvm->mutex);
2681                 return ret;
2682         }
2683         return 0;
2684 }
2685
2686 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2687                                       struct ieee80211_vif *vif)
2688 {
2689         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2690         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2691                            200 + vif->bss_conf.beacon_int);
2692         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2693                                100 + vif->bss_conf.beacon_int);
2694
2695         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2696                 return;
2697
2698         /*
2699          * iwl_mvm_protect_session() reads directly from the device
2700          * (the system time), so make sure it is available.
2701          */
2702         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2703                 return;
2704
2705         mutex_lock(&mvm->mutex);
2706         /* Try really hard to protect the session and hear a beacon */
2707         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2708         mutex_unlock(&mvm->mutex);
2709
2710         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2711 }
2712
2713 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2714                                         struct ieee80211_vif *vif,
2715                                         struct cfg80211_sched_scan_request *req,
2716                                         struct ieee80211_scan_ies *ies)
2717 {
2718         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2719         int ret;
2720
2721         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2722                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2723                 if (ret)
2724                         return ret;
2725         }
2726
2727         mutex_lock(&mvm->mutex);
2728
2729         if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2730                 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2731                 ret = -EBUSY;
2732                 goto out;
2733         }
2734
2735         if (!vif->bss_conf.idle) {
2736                 ret = -EBUSY;
2737                 goto out;
2738         }
2739
2740         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2741                 ret = -EBUSY;
2742                 goto out;
2743         }
2744
2745         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2746         if (ret)
2747                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2748
2749 out:
2750         mutex_unlock(&mvm->mutex);
2751         return ret;
2752 }
2753
2754 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2755                                        struct ieee80211_vif *vif)
2756 {
2757         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2758         int ret;
2759
2760         mutex_lock(&mvm->mutex);
2761
2762         /* Due to a race condition, it's possible that mac80211 asks
2763          * us to stop a sched_scan when it's already stopped.  This
2764          * can happen, for instance, if we stopped the scan ourselves,
2765          * called ieee80211_sched_scan_stopped() and the userspace called
2766          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2767          * could run.  To handle this, simply return if the scan is
2768          * not running.
2769         */
2770         /* FIXME: for now, we ignore this race for UMAC scans, since
2771          * they don't set the scan_status.
2772          */
2773         if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
2774             !(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2775                 mutex_unlock(&mvm->mutex);
2776                 return 0;
2777         }
2778
2779         ret = iwl_mvm_scan_offload_stop(mvm, false);
2780         mutex_unlock(&mvm->mutex);
2781         iwl_mvm_wait_for_async_handlers(mvm);
2782
2783         return ret;
2784 }
2785
2786 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2787                                enum set_key_cmd cmd,
2788                                struct ieee80211_vif *vif,
2789                                struct ieee80211_sta *sta,
2790                                struct ieee80211_key_conf *key)
2791 {
2792         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2793         int ret;
2794
2795         if (iwlwifi_mod_params.sw_crypto) {
2796                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2797                 return -EOPNOTSUPP;
2798         }
2799
2800         switch (key->cipher) {
2801         case WLAN_CIPHER_SUITE_TKIP:
2802                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2803                 /* fall-through */
2804         case WLAN_CIPHER_SUITE_CCMP:
2805                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2806                 break;
2807         case WLAN_CIPHER_SUITE_AES_CMAC:
2808                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2809                 break;
2810         case WLAN_CIPHER_SUITE_WEP40:
2811         case WLAN_CIPHER_SUITE_WEP104:
2812                 /* For non-client mode, only use WEP keys for TX as we probably
2813                  * don't have a station yet anyway and would then have to keep
2814                  * track of the keys, linking them to each of the clients/peers
2815                  * as they appear. For now, don't do that, for performance WEP
2816                  * offload doesn't really matter much, but we need it for some
2817                  * other offload features in client mode.
2818                  */
2819                 if (vif->type != NL80211_IFTYPE_STATION)
2820                         return 0;
2821                 break;
2822         default:
2823                 /* currently FW supports only one optional cipher scheme */
2824                 if (hw->n_cipher_schemes &&
2825                     hw->cipher_schemes->cipher == key->cipher)
2826                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2827                 else
2828                         return -EOPNOTSUPP;
2829         }
2830
2831         mutex_lock(&mvm->mutex);
2832
2833         switch (cmd) {
2834         case SET_KEY:
2835                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2836                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2837                         /*
2838                          * GTK on AP interface is a TX-only key, return 0;
2839                          * on IBSS they're per-station and because we're lazy
2840                          * we don't support them for RX, so do the same.
2841                          */
2842                         ret = 0;
2843                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2844                         break;
2845                 }
2846
2847                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2848                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2849                 if (ret) {
2850                         IWL_WARN(mvm, "set key failed\n");
2851                         /*
2852                          * can't add key for RX, but we don't need it
2853                          * in the device for TX so still return 0
2854                          */
2855                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2856                         ret = 0;
2857                 }
2858
2859                 break;
2860         case DISABLE_KEY:
2861                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2862                         ret = 0;
2863                         break;
2864                 }
2865
2866                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2867                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2868                 break;
2869         default:
2870                 ret = -EINVAL;
2871         }
2872
2873         mutex_unlock(&mvm->mutex);
2874         return ret;
2875 }
2876
2877 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2878                                         struct ieee80211_vif *vif,
2879                                         struct ieee80211_key_conf *keyconf,
2880                                         struct ieee80211_sta *sta,
2881                                         u32 iv32, u16 *phase1key)
2882 {
2883         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2884
2885         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2886                 return;
2887
2888         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2889 }
2890
2891
2892 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2893                                struct iwl_rx_packet *pkt, void *data)
2894 {
2895         struct iwl_mvm *mvm =
2896                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2897         struct iwl_hs20_roc_res *resp;
2898         int resp_len = iwl_rx_packet_payload_len(pkt);
2899         struct iwl_mvm_time_event_data *te_data = data;
2900
2901         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2902                 return true;
2903
2904         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2905                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2906                 return true;
2907         }
2908
2909         resp = (void *)pkt->data;
2910
2911         IWL_DEBUG_TE(mvm,
2912                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2913                      resp->status, resp->event_unique_id);
2914
2915         te_data->uid = le32_to_cpu(resp->event_unique_id);
2916         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2917                      te_data->uid);
2918
2919         spin_lock_bh(&mvm->time_event_lock);
2920         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2921         spin_unlock_bh(&mvm->time_event_lock);
2922
2923         return true;
2924 }
2925
2926 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2927 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2928                                     struct ieee80211_channel *channel,
2929                                     struct ieee80211_vif *vif,
2930                                     int duration)
2931 {
2932         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2933         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2934         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2935         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2936         struct iwl_notification_wait wait_time_event;
2937         struct iwl_hs20_roc_req aux_roc_req = {
2938                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2939                 .id_and_color =
2940                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2941                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2942                 /* Set the channel info data */
2943                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2944                         PHY_BAND_24 : PHY_BAND_5,
2945                 .channel_info.channel = channel->hw_value,
2946                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2947                 /* Set the time and duration */
2948                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2949                 .apply_time_max_delay =
2950                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2951                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2952          };
2953
2954         /* Set the node address */
2955         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2956
2957         lockdep_assert_held(&mvm->mutex);
2958
2959         spin_lock_bh(&mvm->time_event_lock);
2960
2961         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2962                 spin_unlock_bh(&mvm->time_event_lock);
2963                 return -EIO;
2964         }
2965
2966         te_data->vif = vif;
2967         te_data->duration = duration;
2968         te_data->id = HOT_SPOT_CMD;
2969
2970         spin_unlock_bh(&mvm->time_event_lock);
2971
2972         /*
2973          * Use a notification wait, which really just processes the
2974          * command response and doesn't wait for anything, in order
2975          * to be able to process the response and get the UID inside
2976          * the RX path. Using CMD_WANT_SKB doesn't work because it
2977          * stores the buffer and then wakes up this thread, by which
2978          * time another notification (that the time event started)
2979          * might already be processed unsuccessfully.
2980          */
2981         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2982                                    time_event_response,
2983                                    ARRAY_SIZE(time_event_response),
2984                                    iwl_mvm_rx_aux_roc, te_data);
2985
2986         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2987                                    &aux_roc_req);
2988
2989         if (res) {
2990                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2991                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2992                 goto out_clear_te;
2993         }
2994
2995         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2996         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2997         /* should never fail */
2998         WARN_ON_ONCE(res);
2999
3000         if (res) {
3001  out_clear_te:
3002                 spin_lock_bh(&mvm->time_event_lock);
3003                 iwl_mvm_te_clear_data(mvm, te_data);
3004                 spin_unlock_bh(&mvm->time_event_lock);
3005         }
3006
3007         return res;
3008 }
3009
3010 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3011                        struct ieee80211_vif *vif,
3012                        struct ieee80211_channel *channel,
3013                        int duration,
3014                        enum ieee80211_roc_type type)
3015 {
3016         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3017         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3018         struct cfg80211_chan_def chandef;
3019         struct iwl_mvm_phy_ctxt *phy_ctxt;
3020         int ret, i;
3021
3022         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3023                            duration, type);
3024
3025         mutex_lock(&mvm->mutex);
3026
3027         switch (vif->type) {
3028         case NL80211_IFTYPE_STATION:
3029                 if (mvm->fw->ucode_capa.capa[0] &
3030                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
3031                         /* Use aux roc framework (HS20) */
3032                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3033                                                        vif, duration);
3034                         goto out_unlock;
3035                 }
3036                 IWL_ERR(mvm, "hotspot not supported\n");
3037                 ret = -EINVAL;
3038                 goto out_unlock;
3039         case NL80211_IFTYPE_P2P_DEVICE:
3040                 /* handle below */
3041                 break;
3042         default:
3043                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3044                 ret = -EINVAL;
3045                 goto out_unlock;
3046         }
3047
3048         for (i = 0; i < NUM_PHY_CTX; i++) {
3049                 phy_ctxt = &mvm->phy_ctxts[i];
3050                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3051                         continue;
3052
3053                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3054                         /*
3055                          * Unbind the P2P_DEVICE from the current PHY context,
3056                          * and if the PHY context is not used remove it.
3057                          */
3058                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3059                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3060                                 goto out_unlock;
3061
3062                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3063
3064                         /* Bind the P2P_DEVICE to the current PHY Context */
3065                         mvmvif->phy_ctxt = phy_ctxt;
3066
3067                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3068                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3069                                 goto out_unlock;
3070
3071                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3072                         goto schedule_time_event;
3073                 }
3074         }
3075
3076         /* Need to update the PHY context only if the ROC channel changed */
3077         if (channel == mvmvif->phy_ctxt->channel)
3078                 goto schedule_time_event;
3079
3080         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3081
3082         /*
3083          * Change the PHY context configuration as it is currently referenced
3084          * only by the P2P Device MAC
3085          */
3086         if (mvmvif->phy_ctxt->ref == 1) {
3087                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3088                                                &chandef, 1, 1);
3089                 if (ret)
3090                         goto out_unlock;
3091         } else {
3092                 /*
3093                  * The PHY context is shared with other MACs. Need to remove the
3094                  * P2P Device from the binding, allocate an new PHY context and
3095                  * create a new binding
3096                  */
3097                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3098                 if (!phy_ctxt) {
3099                         ret = -ENOSPC;
3100                         goto out_unlock;
3101                 }
3102
3103                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3104                                                1, 1);
3105                 if (ret) {
3106                         IWL_ERR(mvm, "Failed to change PHY context\n");
3107                         goto out_unlock;
3108                 }
3109
3110                 /* Unbind the P2P_DEVICE from the current PHY context */
3111                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3112                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3113                         goto out_unlock;
3114
3115                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3116
3117                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3118                 mvmvif->phy_ctxt = phy_ctxt;
3119
3120                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3121                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3122                         goto out_unlock;
3123
3124                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3125         }
3126
3127 schedule_time_event:
3128         /* Schedule the time events */
3129         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3130
3131 out_unlock:
3132         mutex_unlock(&mvm->mutex);
3133         IWL_DEBUG_MAC80211(mvm, "leave\n");
3134         return ret;
3135 }
3136
3137 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3138 {
3139         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3140
3141         IWL_DEBUG_MAC80211(mvm, "enter\n");
3142
3143         mutex_lock(&mvm->mutex);
3144         iwl_mvm_stop_roc(mvm);
3145         mutex_unlock(&mvm->mutex);
3146
3147         IWL_DEBUG_MAC80211(mvm, "leave\n");
3148         return 0;
3149 }
3150
3151 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3152                                  struct ieee80211_chanctx_conf *ctx)
3153 {
3154         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3155         struct iwl_mvm_phy_ctxt *phy_ctxt;
3156         int ret;
3157
3158         lockdep_assert_held(&mvm->mutex);
3159
3160         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3161
3162         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3163         if (!phy_ctxt) {
3164                 ret = -ENOSPC;
3165                 goto out;
3166         }
3167
3168         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3169                                        ctx->rx_chains_static,
3170                                        ctx->rx_chains_dynamic);
3171         if (ret) {
3172                 IWL_ERR(mvm, "Failed to add PHY context\n");
3173                 goto out;
3174         }
3175
3176         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3177         *phy_ctxt_id = phy_ctxt->id;
3178 out:
3179         return ret;
3180 }
3181
3182 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3183                                struct ieee80211_chanctx_conf *ctx)
3184 {
3185         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3186         int ret;
3187
3188         mutex_lock(&mvm->mutex);
3189         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3190         mutex_unlock(&mvm->mutex);
3191
3192         return ret;
3193 }
3194
3195 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3196                                      struct ieee80211_chanctx_conf *ctx)
3197 {
3198         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3199         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3200
3201         lockdep_assert_held(&mvm->mutex);
3202
3203         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3204 }
3205
3206 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3207                                    struct ieee80211_chanctx_conf *ctx)
3208 {
3209         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3210
3211         mutex_lock(&mvm->mutex);
3212         __iwl_mvm_remove_chanctx(mvm, ctx);
3213         mutex_unlock(&mvm->mutex);
3214 }
3215
3216 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3217                                    struct ieee80211_chanctx_conf *ctx,
3218                                    u32 changed)
3219 {
3220         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3221         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3222         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3223
3224         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3225                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3226                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3227                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3228                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3229                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3230                       phy_ctxt->ref, changed))
3231                 return;
3232
3233         mutex_lock(&mvm->mutex);
3234         iwl_mvm_bt_coex_vif_change(mvm);
3235         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3236                                  ctx->rx_chains_static,
3237                                  ctx->rx_chains_dynamic);
3238         mutex_unlock(&mvm->mutex);
3239 }
3240
3241 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3242                                         struct ieee80211_vif *vif,
3243                                         struct ieee80211_chanctx_conf *ctx,
3244                                         bool switching_chanctx)
3245 {
3246         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3247         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3248         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3249         int ret;
3250
3251         lockdep_assert_held(&mvm->mutex);
3252
3253         mvmvif->phy_ctxt = phy_ctxt;
3254
3255         switch (vif->type) {
3256         case NL80211_IFTYPE_AP:
3257                 /* only needed if we're switching chanctx (i.e. during CSA) */
3258                 if (switching_chanctx) {
3259                         mvmvif->ap_ibss_active = true;
3260                         break;
3261                 }
3262         case NL80211_IFTYPE_ADHOC:
3263                 /*
3264                  * The AP binding flow is handled as part of the start_ap flow
3265                  * (in bss_info_changed), similarly for IBSS.
3266                  */
3267                 ret = 0;
3268                 goto out;
3269         case NL80211_IFTYPE_STATION:
3270                 break;
3271         case NL80211_IFTYPE_MONITOR:
3272                 /* always disable PS when a monitor interface is active */
3273                 mvmvif->ps_disabled = true;
3274                 break;
3275         default:
3276                 ret = -EINVAL;
3277                 goto out;
3278         }
3279
3280         ret = iwl_mvm_binding_add_vif(mvm, vif);
3281         if (ret)
3282                 goto out;
3283
3284         /*
3285          * Power state must be updated before quotas,
3286          * otherwise fw will complain.
3287          */
3288         iwl_mvm_power_update_mac(mvm);
3289
3290         /* Setting the quota at this stage is only required for monitor
3291          * interfaces. For the other types, the bss_info changed flow
3292          * will handle quota settings.
3293          */
3294         if (vif->type == NL80211_IFTYPE_MONITOR) {
3295                 mvmvif->monitor_active = true;
3296                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3297                 if (ret)
3298                         goto out_remove_binding;
3299         }
3300
3301         /* Handle binding during CSA */
3302         if (vif->type == NL80211_IFTYPE_AP) {
3303                 iwl_mvm_update_quotas(mvm, false, NULL);
3304                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3305         }
3306
3307         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3308                 u32 duration = 2 * vif->bss_conf.beacon_int;
3309
3310                 /* iwl_mvm_protect_session() reads directly from the
3311                  * device (the system time), so make sure it is
3312                  * available.
3313                  */
3314                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3315                 if (ret)
3316                         goto out_remove_binding;
3317
3318                 /* Protect the session to make sure we hear the first
3319                  * beacon on the new channel.
3320                  */
3321                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3322                                         vif->bss_conf.beacon_int / 2,
3323                                         true);
3324
3325                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3326
3327                 iwl_mvm_update_quotas(mvm, false, NULL);
3328         }
3329
3330         goto out;
3331
3332 out_remove_binding:
3333         iwl_mvm_binding_remove_vif(mvm, vif);
3334         iwl_mvm_power_update_mac(mvm);
3335 out:
3336         if (ret)
3337                 mvmvif->phy_ctxt = NULL;
3338         return ret;
3339 }
3340 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3341                                       struct ieee80211_vif *vif,
3342                                       struct ieee80211_chanctx_conf *ctx)
3343 {
3344         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3345         int ret;
3346
3347         mutex_lock(&mvm->mutex);
3348         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3349         mutex_unlock(&mvm->mutex);
3350
3351         return ret;
3352 }
3353
3354 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3355                                            struct ieee80211_vif *vif,
3356                                            struct ieee80211_chanctx_conf *ctx,
3357                                            bool switching_chanctx)
3358 {
3359         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3360         struct ieee80211_vif *disabled_vif = NULL;
3361
3362         lockdep_assert_held(&mvm->mutex);
3363
3364         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3365
3366         switch (vif->type) {
3367         case NL80211_IFTYPE_ADHOC:
3368                 goto out;
3369         case NL80211_IFTYPE_MONITOR:
3370                 mvmvif->monitor_active = false;
3371                 mvmvif->ps_disabled = false;
3372                 break;
3373         case NL80211_IFTYPE_AP:
3374                 /* This part is triggered only during CSA */
3375                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3376                         goto out;
3377
3378                 mvmvif->csa_countdown = false;
3379
3380                 /* Set CS bit on all the stations */
3381                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3382
3383                 /* Save blocked iface, the timeout is set on the next beacon */
3384                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3385
3386                 mvmvif->ap_ibss_active = false;
3387                 break;
3388         case NL80211_IFTYPE_STATION:
3389                 if (!switching_chanctx)
3390                         break;
3391
3392                 disabled_vif = vif;
3393
3394                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3395                 break;
3396         default:
3397                 break;
3398         }
3399
3400         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3401         iwl_mvm_binding_remove_vif(mvm, vif);
3402
3403 out:
3404         mvmvif->phy_ctxt = NULL;
3405         iwl_mvm_power_update_mac(mvm);
3406 }
3407
3408 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3409                                          struct ieee80211_vif *vif,
3410                                          struct ieee80211_chanctx_conf *ctx)
3411 {
3412         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3413
3414         mutex_lock(&mvm->mutex);
3415         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3416         mutex_unlock(&mvm->mutex);
3417 }
3418
3419 static int
3420 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3421                                 struct ieee80211_vif_chanctx_switch *vifs)
3422 {
3423         int ret;
3424
3425         mutex_lock(&mvm->mutex);
3426         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3427         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3428
3429         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3430         if (ret) {
3431                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3432                 goto out_reassign;
3433         }
3434
3435         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3436                                            true);
3437         if (ret) {
3438                 IWL_ERR(mvm,
3439                         "failed to assign new_ctx during channel switch\n");
3440                 goto out_remove;
3441         }
3442
3443         /* we don't support TDLS during DCM - can be caused by channel switch */
3444         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3445                 iwl_mvm_teardown_tdls_peers(mvm);
3446
3447         goto out;
3448
3449 out_remove:
3450         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3451
3452 out_reassign:
3453         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3454                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3455                 goto out_restart;
3456         }
3457
3458         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3459                                          true)) {
3460                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3461                 goto out_restart;
3462         }
3463
3464         goto out;
3465
3466 out_restart:
3467         /* things keep failing, better restart the hw */
3468         iwl_mvm_nic_restart(mvm, false);
3469
3470 out:
3471         mutex_unlock(&mvm->mutex);
3472
3473         return ret;
3474 }
3475
3476 static int
3477 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3478                                     struct ieee80211_vif_chanctx_switch *vifs)
3479 {
3480         int ret;
3481
3482         mutex_lock(&mvm->mutex);
3483         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3484
3485         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3486                                            true);
3487         if (ret) {
3488                 IWL_ERR(mvm,
3489                         "failed to assign new_ctx during channel switch\n");
3490                 goto out_reassign;
3491         }
3492
3493         goto out;
3494
3495 out_reassign:
3496         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3497                                          true)) {
3498                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3499                 goto out_restart;
3500         }
3501
3502         goto out;
3503
3504 out_restart:
3505         /* things keep failing, better restart the hw */
3506         iwl_mvm_nic_restart(mvm, false);
3507
3508 out:
3509         mutex_unlock(&mvm->mutex);
3510
3511         return ret;
3512 }
3513
3514 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3515                                       struct ieee80211_vif_chanctx_switch *vifs,
3516                                       int n_vifs,
3517                                       enum ieee80211_chanctx_switch_mode mode)
3518 {
3519         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3520         int ret;
3521
3522         /* we only support a single-vif right now */
3523         if (n_vifs > 1)
3524                 return -EOPNOTSUPP;
3525
3526         switch (mode) {
3527         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3528                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3529                 break;
3530         case CHANCTX_SWMODE_REASSIGN_VIF:
3531                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3532                 break;
3533         default:
3534                 ret = -EOPNOTSUPP;
3535                 break;
3536         }
3537
3538         return ret;
3539 }
3540
3541 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3542                            struct ieee80211_sta *sta,
3543                            bool set)
3544 {
3545         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3546         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3547
3548         if (!mvm_sta || !mvm_sta->vif) {
3549                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3550                 return -EINVAL;
3551         }
3552
3553         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3554 }
3555
3556 #ifdef CONFIG_NL80211_TESTMODE
3557 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3558         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3559         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3560         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3561 };
3562
3563 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3564                                       struct ieee80211_vif *vif,
3565                                       void *data, int len)
3566 {
3567         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3568         int err;
3569         u32 noa_duration;
3570
3571         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3572         if (err)
3573                 return err;
3574
3575         if (!tb[IWL_MVM_TM_ATTR_CMD])
3576                 return -EINVAL;
3577
3578         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3579         case IWL_MVM_TM_CMD_SET_NOA:
3580                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3581                     !vif->bss_conf.enable_beacon ||
3582                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3583                         return -EINVAL;
3584
3585                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3586                 if (noa_duration >= vif->bss_conf.beacon_int)
3587                         return -EINVAL;
3588
3589                 mvm->noa_duration = noa_duration;
3590                 mvm->noa_vif = vif;
3591
3592                 return iwl_mvm_update_quotas(mvm, false, NULL);
3593         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3594                 /* must be associated client vif - ignore authorized */
3595                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3596                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3597                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3598                         return -EINVAL;
3599
3600                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3601                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3602                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3603         }
3604
3605         return -EOPNOTSUPP;
3606 }
3607
3608 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3609                                     struct ieee80211_vif *vif,
3610                                     void *data, int len)
3611 {
3612         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3613         int err;
3614
3615         mutex_lock(&mvm->mutex);
3616         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3617         mutex_unlock(&mvm->mutex);
3618
3619         return err;
3620 }
3621 #endif
3622
3623 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3624                                    struct ieee80211_vif *vif,
3625                                    struct ieee80211_channel_switch *chsw)
3626 {
3627         /* By implementing this operation, we prevent mac80211 from
3628          * starting its own channel switch timer, so that we can call
3629          * ieee80211_chswitch_done() ourselves at the right time
3630          * (which is when the absence time event starts).
3631          */
3632
3633         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3634                            "dummy channel switch op\n");
3635 }
3636
3637 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3638                                       struct ieee80211_vif *vif,
3639                                       struct ieee80211_channel_switch *chsw)
3640 {
3641         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3642         struct ieee80211_vif *csa_vif;
3643         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3644         u32 apply_time;
3645         int ret;
3646
3647         mutex_lock(&mvm->mutex);
3648
3649         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3650                            chsw->chandef.center_freq1);
3651
3652         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH,
3653                                        NULL, 0);
3654
3655         switch (vif->type) {
3656         case NL80211_IFTYPE_AP:
3657                 csa_vif =
3658                         rcu_dereference_protected(mvm->csa_vif,
3659                                                   lockdep_is_held(&mvm->mutex));
3660                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3661                               "Another CSA is already in progress")) {
3662                         ret = -EBUSY;
3663                         goto out_unlock;
3664                 }
3665
3666                 rcu_assign_pointer(mvm->csa_vif, vif);
3667
3668                 if (WARN_ONCE(mvmvif->csa_countdown,
3669                               "Previous CSA countdown didn't complete")) {
3670                         ret = -EBUSY;
3671                         goto out_unlock;
3672                 }
3673
3674                 break;
3675         case NL80211_IFTYPE_STATION:
3676                 /* Schedule the time event to a bit before beacon 1,
3677                  * to make sure we're in the new channel when the
3678                  * GO/AP arrives.
3679                  */
3680                 apply_time = chsw->device_timestamp +
3681                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3682                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3683
3684                 if (chsw->block_tx)
3685                         iwl_mvm_csa_client_absent(mvm, vif);
3686
3687                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3688                                             apply_time);
3689                 if (mvmvif->bf_data.bf_enabled) {
3690                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3691                         if (ret)
3692                                 goto out_unlock;
3693                 }
3694
3695                 break;
3696         default:
3697                 break;
3698         }
3699
3700         mvmvif->ps_disabled = true;
3701
3702         ret = iwl_mvm_power_update_ps(mvm);
3703         if (ret)
3704                 goto out_unlock;
3705
3706         /* we won't be on this channel any longer */
3707         iwl_mvm_teardown_tdls_peers(mvm);
3708
3709 out_unlock:
3710         mutex_unlock(&mvm->mutex);
3711
3712         return ret;
3713 }
3714
3715 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3716                                        struct ieee80211_vif *vif)
3717 {
3718         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3719         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3720         int ret;
3721
3722         mutex_lock(&mvm->mutex);
3723
3724         if (vif->type == NL80211_IFTYPE_STATION) {
3725                 struct iwl_mvm_sta *mvmsta;
3726
3727                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3728                                                           mvmvif->ap_sta_id);
3729
3730                 if (WARN_ON(!mvmsta)) {
3731                         ret = -EIO;
3732                         goto out_unlock;
3733                 }
3734
3735                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3736
3737                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3738
3739                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3740                 if (ret)
3741                         goto out_unlock;
3742
3743                 iwl_mvm_stop_session_protection(mvm, vif);
3744         }
3745
3746         mvmvif->ps_disabled = false;
3747
3748         ret = iwl_mvm_power_update_ps(mvm);
3749
3750 out_unlock:
3751         mutex_unlock(&mvm->mutex);
3752
3753         return ret;
3754 }
3755
3756 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3757                               struct ieee80211_vif *vif, u32 queues, bool drop)
3758 {
3759         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3760         struct iwl_mvm_vif *mvmvif;
3761         struct iwl_mvm_sta *mvmsta;
3762         struct ieee80211_sta *sta;
3763         int i;
3764         u32 msk = 0;
3765
3766         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3767                 return;
3768
3769         mutex_lock(&mvm->mutex);
3770         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3771
3772         /* flush the AP-station and all TDLS peers */
3773         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3774                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3775                                                 lockdep_is_held(&mvm->mutex));
3776                 if (IS_ERR_OR_NULL(sta))
3777                         continue;
3778
3779                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3780                 if (mvmsta->vif != vif)
3781                         continue;
3782
3783                 /* make sure only TDLS peers or the AP are flushed */
3784                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3785
3786                 msk |= mvmsta->tfd_queue_msk;
3787         }
3788
3789         if (drop) {
3790                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3791                         IWL_ERR(mvm, "flush request fail\n");
3792                 mutex_unlock(&mvm->mutex);
3793         } else {
3794                 mutex_unlock(&mvm->mutex);
3795
3796                 /* this can take a while, and we may need/want other operations
3797                  * to succeed while doing this, so do it without the mutex held
3798                  */
3799                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3800         }
3801 }
3802
3803 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3804                                   struct survey_info *survey)
3805 {
3806         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3807         int ret;
3808
3809         memset(survey, 0, sizeof(*survey));
3810
3811         /* only support global statistics right now */
3812         if (idx != 0)
3813                 return -ENOENT;
3814
3815         if (!(mvm->fw->ucode_capa.capa[0] &
3816                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3817                 return -ENOENT;
3818
3819         mutex_lock(&mvm->mutex);
3820
3821         if (mvm->ucode_loaded) {
3822                 ret = iwl_mvm_request_statistics(mvm, false);
3823                 if (ret)
3824                         goto out;
3825         }
3826
3827         survey->filled = SURVEY_INFO_TIME |
3828                          SURVEY_INFO_TIME_RX |
3829                          SURVEY_INFO_TIME_TX |
3830                          SURVEY_INFO_TIME_SCAN;
3831         survey->time = mvm->accu_radio_stats.on_time_rf +
3832                        mvm->radio_stats.on_time_rf;
3833         do_div(survey->time, USEC_PER_MSEC);
3834
3835         survey->time_rx = mvm->accu_radio_stats.rx_time +
3836                           mvm->radio_stats.rx_time;
3837         do_div(survey->time_rx, USEC_PER_MSEC);
3838
3839         survey->time_tx = mvm->accu_radio_stats.tx_time +
3840                           mvm->radio_stats.tx_time;
3841         do_div(survey->time_tx, USEC_PER_MSEC);
3842
3843         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3844                             mvm->radio_stats.on_time_scan;
3845         do_div(survey->time_scan, USEC_PER_MSEC);
3846
3847  out:
3848         mutex_unlock(&mvm->mutex);
3849         return ret;
3850 }
3851
3852 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3853                                        struct ieee80211_vif *vif,
3854                                        struct ieee80211_sta *sta,
3855                                        struct station_info *sinfo)
3856 {
3857         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3858         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3859         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3860
3861         if (!(mvm->fw->ucode_capa.capa[0] &
3862                                 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3863                 return;
3864
3865         /* if beacon filtering isn't on mac80211 does it anyway */
3866         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3867                 return;
3868
3869         if (!vif->bss_conf.assoc)
3870                 return;
3871
3872         mutex_lock(&mvm->mutex);
3873
3874         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3875                 goto unlock;
3876
3877         if (iwl_mvm_request_statistics(mvm, false))
3878                 goto unlock;
3879
3880         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3881                            mvmvif->beacon_stats.accu_num_beacons;
3882         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3883         if (mvmvif->beacon_stats.avg_signal) {
3884                 /* firmware only reports a value after RXing a few beacons */
3885                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3886                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3887         }
3888  unlock:
3889         mutex_unlock(&mvm->mutex);
3890 }
3891
3892 const struct ieee80211_ops iwl_mvm_hw_ops = {
3893         .tx = iwl_mvm_mac_tx,
3894         .ampdu_action = iwl_mvm_mac_ampdu_action,
3895         .start = iwl_mvm_mac_start,
3896         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3897         .stop = iwl_mvm_mac_stop,
3898         .add_interface = iwl_mvm_mac_add_interface,
3899         .remove_interface = iwl_mvm_mac_remove_interface,
3900         .config = iwl_mvm_mac_config,
3901         .prepare_multicast = iwl_mvm_prepare_multicast,
3902         .configure_filter = iwl_mvm_configure_filter,
3903         .bss_info_changed = iwl_mvm_bss_info_changed,
3904         .hw_scan = iwl_mvm_mac_hw_scan,
3905         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3906         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3907         .sta_state = iwl_mvm_mac_sta_state,
3908         .sta_notify = iwl_mvm_mac_sta_notify,
3909         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3910         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3911         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3912         .sta_rc_update = iwl_mvm_sta_rc_update,
3913         .conf_tx = iwl_mvm_mac_conf_tx,
3914         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3915         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3916         .flush = iwl_mvm_mac_flush,
3917         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3918         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3919         .set_key = iwl_mvm_mac_set_key,
3920         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3921         .remain_on_channel = iwl_mvm_roc,
3922         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3923         .add_chanctx = iwl_mvm_add_chanctx,
3924         .remove_chanctx = iwl_mvm_remove_chanctx,
3925         .change_chanctx = iwl_mvm_change_chanctx,
3926         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3927         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3928         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3929
3930         .start_ap = iwl_mvm_start_ap_ibss,
3931         .stop_ap = iwl_mvm_stop_ap_ibss,
3932         .join_ibss = iwl_mvm_start_ap_ibss,
3933         .leave_ibss = iwl_mvm_stop_ap_ibss,
3934
3935         .set_tim = iwl_mvm_set_tim,
3936
3937         .channel_switch = iwl_mvm_channel_switch,
3938         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3939         .post_channel_switch = iwl_mvm_post_channel_switch,
3940
3941         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3942         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3943         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3944
3945         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3946
3947 #ifdef CONFIG_PM_SLEEP
3948         /* look at d3.c */
3949         .suspend = iwl_mvm_suspend,
3950         .resume = iwl_mvm_resume,
3951         .set_wakeup = iwl_mvm_set_wakeup,
3952         .set_rekey_data = iwl_mvm_set_rekey_data,
3953 #if IS_ENABLED(CONFIG_IPV6)
3954         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3955 #endif
3956         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3957 #endif
3958         .get_survey = iwl_mvm_mac_get_survey,
3959         .sta_statistics = iwl_mvm_mac_sta_statistics,
3960 };