drivers/net/wireless/intel/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 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
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  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/kernel.h>
  68 #include <linux/slab.h>
  69 #include <linux/skbuff.h>
  70 #include <linux/netdevice.h>
  71 #include <linux/etherdevice.h>
  72 #include <linux/ip.h>
  73 #include <linux/if_arp.h>
  74 #include <linux/time.h>
  75 #include <net/mac80211.h>
  76 #include <net/ieee80211_radiotap.h>
  77 #include <net/tcp.h>
  78
  79 #include "iwl-op-mode.h"
  80 #include "iwl-io.h"
  81 #include "mvm.h"
  82 #include "sta.h"
  83 #include "time-event.h"
  84 #include "iwl-eeprom-parse.h"
  85 #include "iwl-phy-db.h"
  86 #include "testmode.h"
  87 #include "fw/error-dump.h"
  88 #include "iwl-prph.h"
  89 #include "iwl-nvm-parse.h"
  90 #include "fw-dbg.h"
  91
  92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_STATION),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_AP) |
 100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 101                         BIT(NL80211_IFTYPE_P2P_GO),
 102         },
 103         {
 104                 .max = 1,
 105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 106         },
 107 };
 108
 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 110         {
 111                 .num_different_channels = 2,
 112                 .max_interfaces = 3,
 113                 .limits = iwl_mvm_limits,
 114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 115         },
 116 };
 117
 118 #ifdef CONFIG_PM_SLEEP
 119 static const struct nl80211_wowlan_tcp_data_token_feature
 120 iwl_mvm_wowlan_tcp_token_feature = {
 121         .min_len = 0,
 122         .max_len = 255,
 123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 124 };
 125
 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 129                             sizeof(struct ethhdr) -
 130                             sizeof(struct iphdr) -
 131                             sizeof(struct tcphdr),
 132         .data_interval_max = 65535, /* __le16 in API */
 133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 134                             sizeof(struct ethhdr) -
 135                             sizeof(struct iphdr) -
 136                             sizeof(struct tcphdr),
 137         .seq = true,
 138 };
 139 #endif
 140
 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 142 /*
 143  * Use the reserved field to indicate magic values.
 144  * these values will only be used internally by the driver,
 145  * and won't make it to the fw (reserved will be 0).
 146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 147  *      be the vif's ip address. in case there is not a single
 148  *      ip address (0, or more than 1), this attribute will
 149  *      be skipped.
 150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 151  *      the LSB bytes of the vif's mac address
 152  */
 153 enum {
 154         BC_FILTER_MAGIC_NONE = 0,
 155         BC_FILTER_MAGIC_IP,
 156         BC_FILTER_MAGIC_MAC,
 157 };
 158
 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 160         {
 161                 /* arp */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 164                 .attrs = {
 165                         {
 166                                 /* frame type - arp, hw type - ethernet */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header),
 170                                 .val = cpu_to_be32(0x08060001),
 171                                 .mask = cpu_to_be32(0xffffffff),
 172                         },
 173                         {
 174                                 /* arp dest ip */
 175                                 .offset_type =
 176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 177                                 .offset = sizeof(rfc1042_header) + 2 +
 178                                           sizeof(struct arphdr) +
 179                                           ETH_ALEN + sizeof(__be32) +
 180                                           ETH_ALEN,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 184                         },
 185                 },
 186         },
 187         {
 188                 /* dhcp offer bcast */
 189                 .discard = 0,
 190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 191                 .attrs = {
 192                         {
 193                                 /* udp dest port - 68 (bootp client)*/
 194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 195                                 .offset = offsetof(struct udphdr, dest),
 196                                 .val = cpu_to_be32(0x00440000),
 197                                 .mask = cpu_to_be32(0xffff0000),
 198                         },
 199                         {
 200                                 /* dhcp - lsb bytes of client hw address */
 201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 202                                 .offset = 38,
 203                                 .mask = cpu_to_be32(0xffffffff),
 204                                 /* mark it as special field */
 205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 206                         },
 207                 },
 208         },
 209         /* last filter must be empty */
 210         {},
 211 };
 212 #endif
 213
 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 215 {
 216         if (!iwl_mvm_is_d0i3_supported(mvm))
 217                 return;
 218
 219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 220         spin_lock_bh(&mvm->refs_lock);
 221         mvm->refs[ref_type]++;
 222         spin_unlock_bh(&mvm->refs_lock);
 223         iwl_trans_ref(mvm->trans);
 224 }
 225
 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 227 {
 228         if (!iwl_mvm_is_d0i3_supported(mvm))
 229                 return;
 230
 231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 232         spin_lock_bh(&mvm->refs_lock);
 233         if (WARN_ON(!mvm->refs[ref_type])) {
 234                 spin_unlock_bh(&mvm->refs_lock);
 235                 return;
 236         }
 237         mvm->refs[ref_type]--;
 238         spin_unlock_bh(&mvm->refs_lock);
 239         iwl_trans_unref(mvm->trans);
 240 }
 241
 242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 243                                      enum iwl_mvm_ref_type except_ref)
 244 {
 245         int i, j;
 246
 247         if (!iwl_mvm_is_d0i3_supported(mvm))
 248                 return;
 249
 250         spin_lock_bh(&mvm->refs_lock);
 251         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 252                 if (except_ref == i || !mvm->refs[i])
 253                         continue;
 254
 255                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 256                               i, mvm->refs[i]);
 257                 for (j = 0; j < mvm->refs[i]; j++)
 258                         iwl_trans_unref(mvm->trans);
 259                 mvm->refs[i] = 0;
 260         }
 261         spin_unlock_bh(&mvm->refs_lock);
 262 }
 263
 264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 265 {
 266         int i;
 267         bool taken = false;
 268
 269         if (!iwl_mvm_is_d0i3_supported(mvm))
 270                 return true;
 271
 272         spin_lock_bh(&mvm->refs_lock);
 273         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 274                 if (mvm->refs[i]) {
 275                         taken = true;
 276                         break;
 277                 }
 278         }
 279         spin_unlock_bh(&mvm->refs_lock);
 280
 281         return taken;
 282 }
 283
 284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 285 {
 286         iwl_mvm_ref(mvm, ref_type);
 287
 288         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 289                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 290                                 HZ)) {
 291                 WARN_ON_ONCE(1);
 292                 iwl_mvm_unref(mvm, ref_type);
 293                 return -EIO;
 294         }
 295
 296         return 0;
 297 }
 298
 299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 300 {
 301         int i;
 302
 303         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 304         for (i = 0; i < NUM_PHY_CTX; i++) {
 305                 mvm->phy_ctxts[i].id = i;
 306                 mvm->phy_ctxts[i].ref = 0;
 307         }
 308 }
 309
 310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 311                                                   const char *alpha2,
 312                                                   enum iwl_mcc_source src_id,
 313                                                   bool *changed)
 314 {
 315         struct ieee80211_regdomain *regd = NULL;
 316         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 317         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 318         struct iwl_mcc_update_resp *resp;
 319
 320         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 321
 322         lockdep_assert_held(&mvm->mutex);
 323
 324         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 325         if (IS_ERR_OR_NULL(resp)) {
 326                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 327                               PTR_ERR_OR_ZERO(resp));
 328                 goto out;
 329         }
 330
 331         if (changed)
 332                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 333
 334         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 335                                       __le32_to_cpu(resp->n_channels),
 336                                       resp->channels,
 337                                       __le16_to_cpu(resp->mcc));
 338         /* Store the return source id */
 339         src_id = resp->source_id;
 340         kfree(resp);
 341         if (IS_ERR_OR_NULL(regd)) {
 342                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 343                               PTR_ERR_OR_ZERO(regd));
 344                 goto out;
 345         }
 346
 347         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 348                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 349         mvm->lar_regdom_set = true;
 350         mvm->mcc_src = src_id;
 351
 352 out:
 353         return regd;
 354 }
 355
 356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 357 {
 358         bool changed;
 359         struct ieee80211_regdomain *regd;
 360
 361         if (!iwl_mvm_is_lar_supported(mvm))
 362                 return;
 363
 364         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 365         if (!IS_ERR_OR_NULL(regd)) {
 366                 /* only update the regulatory core if changed */
 367                 if (changed)
 368                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 369
 370                 kfree(regd);
 371         }
 372 }
 373
 374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 375                                                           bool *changed)
 376 {
 377         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 378                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 379                                      MCC_SOURCE_GET_CURRENT :
 380                                      MCC_SOURCE_OLD_FW, changed);
 381 }
 382
 383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 384 {
 385         enum iwl_mcc_source used_src;
 386         struct ieee80211_regdomain *regd;
 387         int ret;
 388         bool changed;
 389         const struct ieee80211_regdomain *r =
 390                         rtnl_dereference(mvm->hw->wiphy->regd);
 391
 392         if (!r)
 393                 return -ENOENT;
 394
 395         /* save the last source in case we overwrite it below */
 396         used_src = mvm->mcc_src;
 397         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 398                 /* Notify the firmware we support wifi location updates */
 399                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 400                 if (!IS_ERR_OR_NULL(regd))
 401                         kfree(regd);
 402         }
 403
 404         /* Now set our last stored MCC and source */
 405         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 406                                      &changed);
 407         if (IS_ERR_OR_NULL(regd))
 408                 return -EIO;
 409
 410         /* update cfg80211 if the regdomain was changed */
 411         if (changed)
 412                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 413         else
 414                 ret = 0;
 415
 416         kfree(regd);
 417         return ret;
 418 }
 419
 420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 421 {
 422         struct ieee80211_hw *hw = mvm->hw;
 423         int num_mac, ret, i;
 424         static const u32 mvm_ciphers[] = {
 425                 WLAN_CIPHER_SUITE_WEP40,
 426                 WLAN_CIPHER_SUITE_WEP104,
 427                 WLAN_CIPHER_SUITE_TKIP,
 428                 WLAN_CIPHER_SUITE_CCMP,
 429         };
 430
 431         /* Tell mac80211 our characteristics */
 432         ieee80211_hw_set(hw, SIGNAL_DBM);
 433         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 434         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 435         ieee80211_hw_set(hw, QUEUE_CONTROL);
 436         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 437         ieee80211_hw_set(hw, SUPPORTS_PS);
 438         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 439         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 440         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 441         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 442         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 443         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 444         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 445         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 446         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 447         if (iwl_mvm_has_new_rx_api(mvm))
 448                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 449         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
 450                 ieee80211_hw_set(hw, AP_LINK_PS);
 451
 452         if (mvm->trans->num_rx_queues > 1)
 453                 ieee80211_hw_set(hw, USES_RSS);
 454
 455         if (mvm->trans->max_skb_frags)
 456                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 457
 458         if (!iwl_mvm_is_dqa_supported(mvm))
 459                 hw->queues = mvm->first_agg_queue;
 460         else
 461                 hw->queues = IEEE80211_MAX_QUEUES;
 462         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 463         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 464                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 465         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 466                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 467
 468         hw->radiotap_timestamp.units_pos =
 469                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 470                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 471         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 472         hw->radiotap_timestamp.accuracy = 22;
 473
 474         hw->rate_control_algorithm = "iwl-mvm-rs";
 475         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 476         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 477
 478         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 479         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 480         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 481         hw->wiphy->cipher_suites = mvm->ciphers;
 482
 483         if (iwl_mvm_has_new_rx_api(mvm)) {
 484                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 485                         WLAN_CIPHER_SUITE_GCMP;
 486                 hw->wiphy->n_cipher_suites++;
 487                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 488                         WLAN_CIPHER_SUITE_GCMP_256;
 489                 hw->wiphy->n_cipher_suites++;
 490         }
 491
 492         /* Enable 11w if software crypto is not enabled (as the
 493          * firmware will interpret some mgmt packets, so enabling it
 494          * with software crypto isn't safe).
 495          */
 496         if (!iwlwifi_mod_params.swcrypto) {
 497                 ieee80211_hw_set(hw, MFP_CAPABLE);
 498                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 499                         WLAN_CIPHER_SUITE_AES_CMAC;
 500                 hw->wiphy->n_cipher_suites++;
 501                 if (iwl_mvm_has_new_rx_api(mvm)) {
 502                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 503                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 504                         hw->wiphy->n_cipher_suites++;
 505                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 506                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 507                         hw->wiphy->n_cipher_suites++;
 508                 }
 509         }
 510
 511         /* currently FW API supports only one optional cipher scheme */
 512         if (mvm->fw->cs[0].cipher) {
 513                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 514                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 515
 516                 mvm->hw->n_cipher_schemes = 1;
 517
 518                 cs->cipher = le32_to_cpu(fwcs->cipher);
 519                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 520                 cs->hdr_len = fwcs->hdr_len;
 521                 cs->pn_len = fwcs->pn_len;
 522                 cs->pn_off = fwcs->pn_off;
 523                 cs->key_idx_off = fwcs->key_idx_off;
 524                 cs->key_idx_mask = fwcs->key_idx_mask;
 525                 cs->key_idx_shift = fwcs->key_idx_shift;
 526                 cs->mic_len = fwcs->mic_len;
 527
 528                 mvm->hw->cipher_schemes = mvm->cs;
 529                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 530                 hw->wiphy->n_cipher_suites++;
 531         }
 532
 533         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 534         hw->wiphy->features |=
 535                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 536                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 537                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 538
 539         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 540         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 541         hw->chanctx_data_size = sizeof(u16);
 542
 543         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 544                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 545                 BIT(NL80211_IFTYPE_AP) |
 546                 BIT(NL80211_IFTYPE_P2P_GO) |
 547                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 548                 BIT(NL80211_IFTYPE_ADHOC);
 549
 550         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 551         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 552         if (iwl_mvm_is_lar_supported(mvm))
 553                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 554         else
 555                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 556                                                REGULATORY_DISABLE_BEACON_HINTS;
 557
 558         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 559         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 560
 561         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 562         hw->wiphy->n_iface_combinations =
 563                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 564
 565         hw->wiphy->max_remain_on_channel_duration = 10000;
 566         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 567         /* we can compensate an offset of up to 3 channels = 15 MHz */
 568         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 569
 570         /* Extract MAC address */
 571         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 572         hw->wiphy->addresses = mvm->addresses;
 573         hw->wiphy->n_addresses = 1;
 574
 575         /* Extract additional MAC addresses if available */
 576         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 577                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 578
 579         for (i = 1; i < num_mac; i++) {
 580                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 581                        ETH_ALEN);
 582                 mvm->addresses[i].addr[5]++;
 583                 hw->wiphy->n_addresses++;
 584         }
 585
 586         iwl_mvm_reset_phy_ctxts(mvm);
 587
 588         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 589
 590         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 591
 592         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 593         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 594                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 595
 596         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 597                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 598         else
 599                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 600
 601         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 602                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 603                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 604         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 605                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 606                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 607
 608                 if (fw_has_capa(&mvm->fw->ucode_capa,
 609                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 610                     fw_has_api(&mvm->fw->ucode_capa,
 611                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 612                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 613                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 614         }
 615
 616         hw->wiphy->hw_version = mvm->trans->hw_id;
 617
 618         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 619                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 620         else
 621                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 622
 623         hw->wiphy->max_sched_scan_reqs = 1;
 624         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 625         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 626         /* we create the 802.11 header and zero length SSID IE. */
 627         hw->wiphy->max_sched_scan_ie_len =
 628                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 629         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 630         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 631
 632         /*
 633          * the firmware uses u8 for num of iterations, but 0xff is saved for
 634          * infinite loop, so the maximum number of iterations is actually 254.
 635          */
 636         hw->wiphy->max_sched_scan_plan_iterations = 254;
 637
 638         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 639                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 640                                NL80211_FEATURE_P2P_GO_OPPPS |
 641                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 642                                NL80211_FEATURE_DYNAMIC_SMPS |
 643                                NL80211_FEATURE_STATIC_SMPS |
 644                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 648                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 649         if (fw_has_capa(&mvm->fw->ucode_capa,
 650                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 651                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 652
 653         if (fw_has_capa(&mvm->fw->ucode_capa,
 654                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 655                 hw->wiphy->features |=
 656                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 657
 658         if (fw_has_capa(&mvm->fw->ucode_capa,
 659                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 660                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 661
 662         if (fw_has_api(&mvm->fw->ucode_capa,
 663                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 664                 wiphy_ext_feature_set(hw->wiphy,
 665                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 666                 wiphy_ext_feature_set(hw->wiphy,
 667                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 668                 wiphy_ext_feature_set(hw->wiphy,
 669                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 670         }
 671
 672         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 673
 674 #ifdef CONFIG_PM_SLEEP
 675         if (iwl_mvm_is_d0i3_supported(mvm) &&
 676             device_can_wakeup(mvm->trans->dev)) {
 677                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 678                 hw->wiphy->wowlan = &mvm->wowlan;
 679         }
 680
 681         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 682             mvm->trans->ops->d3_suspend &&
 683             mvm->trans->ops->d3_resume &&
 684             device_can_wakeup(mvm->trans->dev)) {
 685                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 686                                      WIPHY_WOWLAN_DISCONNECT |
 687                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 688                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 689                                      WIPHY_WOWLAN_NET_DETECT;
 690                 if (!iwlwifi_mod_params.swcrypto)
 691                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 692                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 693                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 694
 695                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 696                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 697                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 698                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 699                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 700                 hw->wiphy->wowlan = &mvm->wowlan;
 701         }
 702 #endif
 703
 704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 705         /* assign default bcast filtering configuration */
 706         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 707 #endif
 708
 709         ret = iwl_mvm_leds_init(mvm);
 710         if (ret)
 711                 return ret;
 712
 713         if (fw_has_capa(&mvm->fw->ucode_capa,
 714                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 715                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 716                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 717                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 718         }
 719
 720         if (fw_has_capa(&mvm->fw->ucode_capa,
 721                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 722                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 723                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 724         }
 725
 726         hw->netdev_features |= mvm->cfg->features;
 727         if (!iwl_mvm_is_csum_supported(mvm)) {
 728                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 729                                          NETIF_F_RXCSUM);
 730                 /* We may support SW TX CSUM */
 731                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 732                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 733         }
 734
 735         ret = ieee80211_register_hw(mvm->hw);
 736         if (ret)
 737                 iwl_mvm_leds_exit(mvm);
 738         mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 739
 740         if (mvm->cfg->vht_mu_mimo_supported)
 741                 wiphy_ext_feature_set(hw->wiphy,
 742                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 743
 744         return ret;
 745 }
 746
 747 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 748                              struct ieee80211_sta *sta,
 749                              struct sk_buff *skb)
 750 {
 751         struct iwl_mvm_sta *mvmsta;
 752         bool defer = false;
 753
 754         /*
 755          * double check the IN_D0I3 flag both before and after
 756          * taking the spinlock, in order to prevent taking
 757          * the spinlock when not needed.
 758          */
 759         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 760                 return false;
 761
 762         spin_lock(&mvm->d0i3_tx_lock);
 763         /*
 764          * testing the flag again ensures the skb dequeue
 765          * loop (on d0i3 exit) hasn't run yet.
 766          */
 767         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 768                 goto out;
 769
 770         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 771         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 772             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 773                 goto out;
 774
 775         __skb_queue_tail(&mvm->d0i3_tx, skb);
 776         ieee80211_stop_queues(mvm->hw);
 777
 778         /* trigger wakeup */
 779         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 780         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 781
 782         defer = true;
 783 out:
 784         spin_unlock(&mvm->d0i3_tx_lock);
 785         return defer;
 786 }
 787
 788 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 789                            struct ieee80211_tx_control *control,
 790                            struct sk_buff *skb)
 791 {
 792         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 793         struct ieee80211_sta *sta = control->sta;
 794         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 795         struct ieee80211_hdr *hdr = (void *)skb->data;
 796
 797         if (iwl_mvm_is_radio_killed(mvm)) {
 798                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 799                 goto drop;
 800         }
 801
 802         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 803             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 804             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 805                 goto drop;
 806
 807         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 808         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 809                      ieee80211_is_mgmt(hdr->frame_control) &&
 810                      !ieee80211_is_deauth(hdr->frame_control) &&
 811                      !ieee80211_is_disassoc(hdr->frame_control) &&
 812                      !ieee80211_is_action(hdr->frame_control)))
 813                 sta = NULL;
 814
 815         if (sta) {
 816                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 817                         return;
 818                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 819                         goto drop;
 820                 return;
 821         }
 822
 823         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 824                 goto drop;
 825         return;
 826  drop:
 827         ieee80211_free_txskb(hw, skb);
 828 }
 829
 830 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 831 {
 832         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 833                 return false;
 834         return true;
 835 }
 836
 837 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 838 {
 839         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 840                 return false;
 841         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 842                 return true;
 843
 844         /* enabled by default */
 845         return true;
 846 }
 847
 848 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 849         do {                                                    \
 850                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 851                         break;                                  \
 852                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 853         } while (0)
 854
 855 static void
 856 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 857                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 858                             enum ieee80211_ampdu_mlme_action action)
 859 {
 860         struct iwl_fw_dbg_trigger_tlv *trig;
 861         struct iwl_fw_dbg_trigger_ba *ba_trig;
 862
 863         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 864                 return;
 865
 866         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 867         ba_trig = (void *)trig->data;
 868
 869         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 870                 return;
 871
 872         switch (action) {
 873         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 874                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 875                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 876
 877                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 878                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 879                                  sta->addr, tid, tid_data->ssn);
 880                 break;
 881                 }
 882         case IEEE80211_AMPDU_TX_STOP_CONT:
 883                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 884                                  "TX AGG STOP: MAC %pM tid %d\n",
 885                                  sta->addr, tid);
 886                 break;
 887         case IEEE80211_AMPDU_RX_START:
 888                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 889                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 890                                  sta->addr, tid, rx_ba_ssn);
 891                 break;
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 894                                  "RX AGG STOP: MAC %pM tid %d\n",
 895                                  sta->addr, tid);
 896                 break;
 897         default:
 898                 break;
 899         }
 900 }
 901
 902 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 903                                     struct ieee80211_vif *vif,
 904                                     struct ieee80211_ampdu_params *params)
 905 {
 906         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 907         int ret;
 908         bool tx_agg_ref = false;
 909         struct ieee80211_sta *sta = params->sta;
 910         enum ieee80211_ampdu_mlme_action action = params->action;
 911         u16 tid = params->tid;
 912         u16 *ssn = &params->ssn;
 913         u8 buf_size = params->buf_size;
 914         bool amsdu = params->amsdu;
 915         u16 timeout = params->timeout;
 916
 917         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 918                      sta->addr, tid, action);
 919
 920         if (!(mvm->nvm_data->sku_cap_11n_enable))
 921                 return -EACCES;
 922
 923         /* return from D0i3 before starting a new Tx aggregation */
 924         switch (action) {
 925         case IEEE80211_AMPDU_TX_START:
 926         case IEEE80211_AMPDU_TX_STOP_CONT:
 927         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 928         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 929         case IEEE80211_AMPDU_TX_OPERATIONAL:
 930                 /*
 931                  * for tx start, wait synchronously until D0i3 exit to
 932                  * get the correct sequence number for the tid.
 933                  * additionally, some other ampdu actions use direct
 934                  * target access, which is not handled automatically
 935                  * by the trans layer (unlike commands), so wait for
 936                  * d0i3 exit in these cases as well.
 937                  */
 938                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 939                 if (ret)
 940                         return ret;
 941
 942                 tx_agg_ref = true;
 943                 break;
 944         default:
 945                 break;
 946         }
 947
 948         mutex_lock(&mvm->mutex);
 949
 950         switch (action) {
 951         case IEEE80211_AMPDU_RX_START:
 952                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 953                         ret = -EINVAL;
 954                         break;
 955                 }
 956                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 957                                          timeout);
 958                 break;
 959         case IEEE80211_AMPDU_RX_STOP:
 960                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 961                                          timeout);
 962                 break;
 963         case IEEE80211_AMPDU_TX_START:
 964                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 965                         ret = -EINVAL;
 966                         break;
 967                 }
 968                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 969                 break;
 970         case IEEE80211_AMPDU_TX_STOP_CONT:
 971                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 972                 break;
 973         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 974         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 975                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 976                 break;
 977         case IEEE80211_AMPDU_TX_OPERATIONAL:
 978                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 979                                               buf_size, amsdu);
 980                 break;
 981         default:
 982                 WARN_ON_ONCE(1);
 983                 ret = -EINVAL;
 984                 break;
 985         }
 986
 987         if (!ret) {
 988                 u16 rx_ba_ssn = 0;
 989
 990                 if (action == IEEE80211_AMPDU_RX_START)
 991                         rx_ba_ssn = *ssn;
 992
 993                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 994                                             rx_ba_ssn, action);
 995         }
 996         mutex_unlock(&mvm->mutex);
 997
 998         /*
 999          * If the tid is marked as started, we won't use it for offloaded
1000          * traffic on the next D0i3 entry. It's safe to unref.
1001          */
1002         if (tx_agg_ref)
1003                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1004
1005         return ret;
1006 }
1007
1008 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1009                                      struct ieee80211_vif *vif)
1010 {
1011         struct iwl_mvm *mvm = data;
1012         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1013
1014         mvmvif->uploaded = false;
1015         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1016
1017         spin_lock_bh(&mvm->time_event_lock);
1018         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1019         spin_unlock_bh(&mvm->time_event_lock);
1020
1021         mvmvif->phy_ctxt = NULL;
1022         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1023 }
1024
1025 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1026 {
1027         /* clear the D3 reconfig, we only need it to avoid dumping a
1028          * firmware coredump on reconfiguration, we shouldn't do that
1029          * on D3->D0 transition
1030          */
1031         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1032                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1033                 iwl_mvm_fw_error_dump(mvm);
1034         }
1035
1036         /* cleanup all stale references (scan, roc), but keep the
1037          * ucode_down ref until reconfig is complete
1038          */
1039         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1040
1041         iwl_mvm_stop_device(mvm);
1042
1043         mvm->scan_status = 0;
1044         mvm->ps_disabled = false;
1045         mvm->calibrating = false;
1046
1047         /* just in case one was running */
1048         iwl_mvm_cleanup_roc_te(mvm);
1049         ieee80211_remain_on_channel_expired(mvm->hw);
1050
1051         /*
1052          * cleanup all interfaces, even inactive ones, as some might have
1053          * gone down during the HW restart
1054          */
1055         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1056
1057         mvm->p2p_device_vif = NULL;
1058         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1059
1060         iwl_mvm_reset_phy_ctxts(mvm);
1061         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1062         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1063         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1064         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1065         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1066         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1067
1068         ieee80211_wake_queues(mvm->hw);
1069
1070         /* clear any stale d0i3 state */
1071         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072
1073         mvm->vif_count = 0;
1074         mvm->rx_ba_sessions = 0;
1075         mvm->fw_dbg_conf = FW_DBG_INVALID;
1076
1077         /* keep statistics ticking */
1078         iwl_mvm_accu_radio_stats(mvm);
1079 }
1080
1081 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1082 {
1083         int ret;
1084
1085         lockdep_assert_held(&mvm->mutex);
1086
1087         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1088                 /* Clean up some internal and mac80211 state on restart */
1089                 iwl_mvm_restart_cleanup(mvm);
1090         } else {
1091                 /* Hold the reference to prevent runtime suspend while
1092                  * the start procedure runs.  It's a bit confusing
1093                  * that the UCODE_DOWN reference is taken, but it just
1094                  * means "UCODE is not UP yet". ( TODO: rename this
1095                  * reference).
1096                  */
1097                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1098         }
1099         ret = iwl_mvm_up(mvm);
1100
1101         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1102                 /* Something went wrong - we need to finish some cleanup
1103                  * that normally iwl_mvm_mac_restart_complete() below
1104                  * would do.
1105                  */
1106                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1107                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1108         }
1109
1110         return ret;
1111 }
1112
1113 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1114 {
1115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116         int ret;
1117
1118         /* Some hw restart cleanups must not hold the mutex */
1119         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1120                 /*
1121                  * Make sure we are out of d0i3. This is needed
1122                  * to make sure the reference accounting is correct
1123                  * (and there is no stale d0i3_exit_work).
1124                  */
1125                 wait_event_timeout(mvm->d0i3_exit_waitq,
1126                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1127                                              &mvm->status),
1128                                    HZ);
1129         }
1130
1131         mutex_lock(&mvm->mutex);
1132         ret = __iwl_mvm_mac_start(mvm);
1133         mutex_unlock(&mvm->mutex);
1134
1135         return ret;
1136 }
1137
1138 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1139 {
1140         int ret;
1141
1142         mutex_lock(&mvm->mutex);
1143
1144         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1145         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1146         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1147         if (ret)
1148                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1149                         ret);
1150
1151         /* allow transport/FW low power modes */
1152         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1153
1154         /*
1155          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1156          * of packets the FW sent out, so we must reconnect.
1157          */
1158         iwl_mvm_teardown_tdls_peers(mvm);
1159
1160         mutex_unlock(&mvm->mutex);
1161 }
1162
1163 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1164 {
1165         if (iwl_mvm_is_d0i3_supported(mvm) &&
1166             iwl_mvm_enter_d0i3_on_suspend(mvm))
1167                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1168                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1169                                                         &mvm->status),
1170                                               HZ),
1171                           "D0i3 exit on resume timed out\n");
1172 }
1173
1174 static void
1175 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1176                               enum ieee80211_reconfig_type reconfig_type)
1177 {
1178         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180         switch (reconfig_type) {
1181         case IEEE80211_RECONFIG_TYPE_RESTART:
1182                 iwl_mvm_restart_complete(mvm);
1183                 break;
1184         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1185                 iwl_mvm_resume_complete(mvm);
1186                 break;
1187         }
1188 }
1189
1190 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1191 {
1192         lockdep_assert_held(&mvm->mutex);
1193
1194         /* firmware counters are obviously reset now, but we shouldn't
1195          * partially track so also clear the fw_reset_accu counters.
1196          */
1197         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1198
1199         /* async_handlers_wk is now blocked */
1200
1201         /*
1202          * The work item could be running or queued if the
1203          * ROC time event stops just as we get here.
1204          */
1205         flush_work(&mvm->roc_done_wk);
1206
1207         iwl_mvm_stop_device(mvm);
1208
1209         iwl_mvm_async_handlers_purge(mvm);
1210         /* async_handlers_list is empty and will stay empty: HW is stopped */
1211
1212         /* the fw is stopped, the aux sta is dead: clean up driver state */
1213         iwl_mvm_del_aux_sta(mvm);
1214
1215         /*
1216          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1217          * won't be called in this case).
1218          * But make sure to cleanup interfaces that have gone down before/during
1219          * HW restart was requested.
1220          */
1221         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1222                 ieee80211_iterate_interfaces(mvm->hw, 0,
1223                                              iwl_mvm_cleanup_iterator, mvm);
1224
1225         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1226          * make sure there's nothing left there and warn if any is found.
1227          */
1228         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1229                 int i;
1230
1231                 for (i = 0; i < mvm->max_scans; i++) {
1232                         if (WARN_ONCE(mvm->scan_uid_status[i],
1233                                       "UMAC scan UID %d status was not cleaned\n",
1234                                       i))
1235                                 mvm->scan_uid_status[i] = 0;
1236                 }
1237         }
1238 }
1239
1240 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1241 {
1242         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1243
1244         flush_work(&mvm->d0i3_exit_work);
1245         flush_work(&mvm->async_handlers_wk);
1246         flush_work(&mvm->add_stream_wk);
1247
1248         /*
1249          * Lock and clear the firmware running bit here already, so that
1250          * new commands coming in elsewhere, e.g. from debugfs, will not
1251          * be able to proceed. This is important here because one of those
1252          * debugfs files causes the fw_dump_wk to be triggered, and if we
1253          * don't stop debugfs accesses before canceling that it could be
1254          * retriggered after we flush it but before we've cleared the bit.
1255          */
1256         clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1257
1258         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1259         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1260         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1261         iwl_mvm_free_fw_dump_desc(mvm);
1262
1263         mutex_lock(&mvm->mutex);
1264         __iwl_mvm_mac_stop(mvm);
1265         mutex_unlock(&mvm->mutex);
1266
1267         /*
1268          * The worker might have been waiting for the mutex, let it run and
1269          * discover that its list is now empty.
1270          */
1271         cancel_work_sync(&mvm->async_handlers_wk);
1272 }
1273
1274 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1275 {
1276         u16 i;
1277
1278         lockdep_assert_held(&mvm->mutex);
1279
1280         for (i = 0; i < NUM_PHY_CTX; i++)
1281                 if (!mvm->phy_ctxts[i].ref)
1282                         return &mvm->phy_ctxts[i];
1283
1284         IWL_ERR(mvm, "No available PHY context\n");
1285         return NULL;
1286 }
1287
1288 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1289                                 s16 tx_power)
1290 {
1291         struct iwl_dev_tx_power_cmd cmd = {
1292                 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1293                 .v3.mac_context_id =
1294                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1295                 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1296         };
1297         int len = sizeof(cmd);
1298
1299         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1300                 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1301
1302         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1303                 len = sizeof(cmd.v3);
1304
1305         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1306 }
1307
1308 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1309                                      struct ieee80211_vif *vif)
1310 {
1311         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1312         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1313         int ret;
1314
1315         mvmvif->mvm = mvm;
1316
1317         /*
1318          * make sure D0i3 exit is completed, otherwise a target access
1319          * during tx queue configuration could be done when still in
1320          * D0i3 state.
1321          */
1322         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1323         if (ret)
1324                 return ret;
1325
1326         /*
1327          * Not much to do here. The stack will not allow interface
1328          * types or combinations that we didn't advertise, so we
1329          * don't really have to check the types.
1330          */
1331
1332         mutex_lock(&mvm->mutex);
1333
1334         /* make sure that beacon statistics don't go backwards with FW reset */
1335         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1336                 mvmvif->beacon_stats.accu_num_beacons +=
1337                         mvmvif->beacon_stats.num_beacons;
1338
1339         /* Allocate resources for the MAC context, and add it to the fw  */
1340         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1341         if (ret)
1342                 goto out_unlock;
1343
1344         /* Counting number of interfaces is needed for legacy PM */
1345         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1346                 mvm->vif_count++;
1347
1348         /*
1349          * The AP binding flow can be done only after the beacon
1350          * template is configured (which happens only in the mac80211
1351          * start_ap() flow), and adding the broadcast station can happen
1352          * only after the binding.
1353          * In addition, since modifying the MAC before adding a bcast
1354          * station is not allowed by the FW, delay the adding of MAC context to
1355          * the point where we can also add the bcast station.
1356          * In short: there's not much we can do at this point, other than
1357          * allocating resources :)
1358          */
1359         if (vif->type == NL80211_IFTYPE_AP ||
1360             vif->type == NL80211_IFTYPE_ADHOC) {
1361                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1362                 if (ret) {
1363                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1364                         goto out_release;
1365                 }
1366
1367                 if (iwl_mvm_is_dqa_supported(mvm)) {
1368                         /*
1369                          * Only queue for this station is the mcast queue,
1370                          * which shouldn't be in TFD mask anyway
1371                          */
1372                         ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1373                                                        0, vif->type,
1374                                                        IWL_STA_MULTICAST);
1375                         if (ret)
1376                                 goto out_release;
1377                 }
1378
1379                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1380                 goto out_unlock;
1381         }
1382
1383         mvmvif->features |= hw->netdev_features;
1384
1385         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1386         if (ret)
1387                 goto out_release;
1388
1389         ret = iwl_mvm_power_update_mac(mvm);
1390         if (ret)
1391                 goto out_remove_mac;
1392
1393         /* beacon filtering */
1394         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1395         if (ret)
1396                 goto out_remove_mac;
1397
1398         if (!mvm->bf_allowed_vif &&
1399             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1400                 mvm->bf_allowed_vif = mvmvif;
1401                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1402                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1403         }
1404
1405         /*
1406          * P2P_DEVICE interface does not have a channel context assigned to it,
1407          * so a dedicated PHY context is allocated to it and the corresponding
1408          * MAC context is bound to it at this stage.
1409          */
1410         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1411
1412                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1413                 if (!mvmvif->phy_ctxt) {
1414                         ret = -ENOSPC;
1415                         goto out_free_bf;
1416                 }
1417
1418                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1419                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1420                 if (ret)
1421                         goto out_unref_phy;
1422
1423                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1424                 if (ret)
1425                         goto out_unbind;
1426
1427                 /* Save a pointer to p2p device vif, so it can later be used to
1428                  * update the p2p device MAC when a GO is started/stopped */
1429                 mvm->p2p_device_vif = vif;
1430         }
1431
1432         iwl_mvm_vif_dbgfs_register(mvm, vif);
1433         goto out_unlock;
1434
1435  out_unbind:
1436         iwl_mvm_binding_remove_vif(mvm, vif);
1437  out_unref_phy:
1438         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1439  out_free_bf:
1440         if (mvm->bf_allowed_vif == mvmvif) {
1441                 mvm->bf_allowed_vif = NULL;
1442                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1443                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1444         }
1445  out_remove_mac:
1446         mvmvif->phy_ctxt = NULL;
1447         iwl_mvm_mac_ctxt_remove(mvm, vif);
1448  out_release:
1449         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1450                 mvm->vif_count--;
1451
1452         iwl_mvm_mac_ctxt_release(mvm, vif);
1453  out_unlock:
1454         mutex_unlock(&mvm->mutex);
1455
1456         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1457
1458         return ret;
1459 }
1460
1461 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1462                                         struct ieee80211_vif *vif)
1463 {
1464         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1465
1466         if (tfd_msk && !iwl_mvm_is_dqa_supported(mvm)) {
1467                 /*
1468                  * mac80211 first removes all the stations of the vif and
1469                  * then removes the vif. When it removes a station it also
1470                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1471                  * of all the stations of this vif are closed, and the queues
1472                  * of these AMPDU sessions are properly closed.
1473                  * We still need to take care of the shared queues of the vif.
1474                  * Flush them here.
1475                  * For DQA mode there is no need - broacast and multicast queue
1476                  * are flushed separately.
1477                  */
1478                 mutex_lock(&mvm->mutex);
1479                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1480                 mutex_unlock(&mvm->mutex);
1481
1482                 /*
1483                  * There are transports that buffer a few frames in the host.
1484                  * For these, the flush above isn't enough since while we were
1485                  * flushing, the transport might have sent more frames to the
1486                  * device. To solve this, wait here until the transport is
1487                  * empty. Technically, this could have replaced the flush
1488                  * above, but flush is much faster than draining. So flush
1489                  * first, and drain to make sure we have no frames in the
1490                  * transport anymore.
1491                  * If a station still had frames on the shared queues, it is
1492                  * already marked as draining, so to complete the draining, we
1493                  * just need to wait until the transport is empty.
1494                  */
1495                 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
1496         }
1497
1498         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1499                 /*
1500                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1501                  * We assume here that all the packets sent to the OFFCHANNEL
1502                  * queue are sent in ROC session.
1503                  */
1504                 flush_work(&mvm->roc_done_wk);
1505         } else {
1506                 /*
1507                  * By now, all the AC queues are empty. The AGG queues are
1508                  * empty too. We already got all the Tx responses for all the
1509                  * packets in the queues. The drain work can have been
1510                  * triggered. Flush it.
1511                  */
1512                 flush_work(&mvm->sta_drained_wk);
1513         }
1514 }
1515
1516 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1517                                          struct ieee80211_vif *vif)
1518 {
1519         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1520         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1521
1522         iwl_mvm_prepare_mac_removal(mvm, vif);
1523
1524         mutex_lock(&mvm->mutex);
1525
1526         if (mvm->bf_allowed_vif == mvmvif) {
1527                 mvm->bf_allowed_vif = NULL;
1528                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1529                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1530         }
1531
1532         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1533
1534         /*
1535          * For AP/GO interface, the tear down of the resources allocated to the
1536          * interface is be handled as part of the stop_ap flow.
1537          */
1538         if (vif->type == NL80211_IFTYPE_AP ||
1539             vif->type == NL80211_IFTYPE_ADHOC) {
1540 #ifdef CONFIG_NL80211_TESTMODE
1541                 if (vif == mvm->noa_vif) {
1542                         mvm->noa_vif = NULL;
1543                         mvm->noa_duration = 0;
1544                 }
1545 #endif
1546                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1547                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1548                 goto out_release;
1549         }
1550
1551         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1552                 mvm->p2p_device_vif = NULL;
1553                 iwl_mvm_rm_bcast_sta(mvm, vif);
1554                 iwl_mvm_binding_remove_vif(mvm, vif);
1555                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1556                 mvmvif->phy_ctxt = NULL;
1557         }
1558
1559         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1560                 mvm->vif_count--;
1561
1562         iwl_mvm_power_update_mac(mvm);
1563         iwl_mvm_mac_ctxt_remove(mvm, vif);
1564
1565 out_release:
1566         iwl_mvm_mac_ctxt_release(mvm, vif);
1567         mutex_unlock(&mvm->mutex);
1568 }
1569
1570 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1571 {
1572         return 0;
1573 }
1574
1575 struct iwl_mvm_mc_iter_data {
1576         struct iwl_mvm *mvm;
1577         int port_id;
1578 };
1579
1580 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1581                                       struct ieee80211_vif *vif)
1582 {
1583         struct iwl_mvm_mc_iter_data *data = _data;
1584         struct iwl_mvm *mvm = data->mvm;
1585         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1586         int ret, len;
1587
1588         /* if we don't have free ports, mcast frames will be dropped */
1589         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1590                 return;
1591
1592         if (vif->type != NL80211_IFTYPE_STATION ||
1593             !vif->bss_conf.assoc)
1594                 return;
1595
1596         cmd->port_id = data->port_id++;
1597         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1598         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1599
1600         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1601         if (ret)
1602                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1603 }
1604
1605 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1606 {
1607         struct iwl_mvm_mc_iter_data iter_data = {
1608                 .mvm = mvm,
1609         };
1610
1611         lockdep_assert_held(&mvm->mutex);
1612
1613         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1614                 return;
1615
1616         ieee80211_iterate_active_interfaces_atomic(
1617                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1618                 iwl_mvm_mc_iface_iterator, &iter_data);
1619 }
1620
1621 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1622                                      struct netdev_hw_addr_list *mc_list)
1623 {
1624         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1625         struct iwl_mcast_filter_cmd *cmd;
1626         struct netdev_hw_addr *addr;
1627         int addr_count;
1628         bool pass_all;
1629         int len;
1630
1631         addr_count = netdev_hw_addr_list_count(mc_list);
1632         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1633                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1634         if (pass_all)
1635                 addr_count = 0;
1636
1637         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1638         cmd = kzalloc(len, GFP_ATOMIC);
1639         if (!cmd)
1640                 return 0;
1641
1642         if (pass_all) {
1643                 cmd->pass_all = 1;
1644                 return (u64)(unsigned long)cmd;
1645         }
1646
1647         netdev_hw_addr_list_for_each(addr, mc_list) {
1648                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1649                                    cmd->count, addr->addr);
1650                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1651                        addr->addr, ETH_ALEN);
1652                 cmd->count++;
1653         }
1654
1655         return (u64)(unsigned long)cmd;
1656 }
1657
1658 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1659                                      unsigned int changed_flags,
1660                                      unsigned int *total_flags,
1661                                      u64 multicast)
1662 {
1663         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1664         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1665
1666         mutex_lock(&mvm->mutex);
1667
1668         /* replace previous configuration */
1669         kfree(mvm->mcast_filter_cmd);
1670         mvm->mcast_filter_cmd = cmd;
1671
1672         if (!cmd)
1673                 goto out;
1674
1675         iwl_mvm_recalc_multicast(mvm);
1676 out:
1677         mutex_unlock(&mvm->mutex);
1678         *total_flags = 0;
1679 }
1680
1681 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1682                                         struct ieee80211_vif *vif,
1683                                         unsigned int filter_flags,
1684                                         unsigned int changed_flags)
1685 {
1686         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1687
1688         /* We support only filter for probe requests */
1689         if (!(changed_flags & FIF_PROBE_REQ))
1690                 return;
1691
1692         /* Supported only for p2p client interfaces */
1693         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1694             !vif->p2p)
1695                 return;
1696
1697         mutex_lock(&mvm->mutex);
1698         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1699         mutex_unlock(&mvm->mutex);
1700 }
1701
1702 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1703 struct iwl_bcast_iter_data {
1704         struct iwl_mvm *mvm;
1705         struct iwl_bcast_filter_cmd *cmd;
1706         u8 current_filter;
1707 };
1708
1709 static void
1710 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1711                          const struct iwl_fw_bcast_filter *in_filter,
1712                          struct iwl_fw_bcast_filter *out_filter)
1713 {
1714         struct iwl_fw_bcast_filter_attr *attr;
1715         int i;
1716
1717         memcpy(out_filter, in_filter, sizeof(*out_filter));
1718
1719         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1720                 attr = &out_filter->attrs[i];
1721
1722                 if (!attr->mask)
1723                         break;
1724
1725                 switch (attr->reserved1) {
1726                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1727                         if (vif->bss_conf.arp_addr_cnt != 1) {
1728                                 attr->mask = 0;
1729                                 continue;
1730                         }
1731
1732                         attr->val = vif->bss_conf.arp_addr_list[0];
1733                         break;
1734                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1735                         attr->val = *(__be32 *)&vif->addr[2];
1736                         break;
1737                 default:
1738                         break;
1739                 }
1740                 attr->reserved1 = 0;
1741                 out_filter->num_attrs++;
1742         }
1743 }
1744
1745 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1746                                           struct ieee80211_vif *vif)
1747 {
1748         struct iwl_bcast_iter_data *data = _data;
1749         struct iwl_mvm *mvm = data->mvm;
1750         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1751         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1752         struct iwl_fw_bcast_mac *bcast_mac;
1753         int i;
1754
1755         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1756                 return;
1757
1758         bcast_mac = &cmd->macs[mvmvif->id];
1759
1760         /*
1761          * enable filtering only for associated stations, but not for P2P
1762          * Clients
1763          */
1764         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1765             !vif->bss_conf.assoc)
1766                 return;
1767
1768         bcast_mac->default_discard = 1;
1769
1770         /* copy all configured filters */
1771         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1772                 /*
1773                  * Make sure we don't exceed our filters limit.
1774                  * if there is still a valid filter to be configured,
1775                  * be on the safe side and just allow bcast for this mac.
1776                  */
1777                 if (WARN_ON_ONCE(data->current_filter >=
1778                                  ARRAY_SIZE(cmd->filters))) {
1779                         bcast_mac->default_discard = 0;
1780                         bcast_mac->attached_filters = 0;
1781                         break;
1782                 }
1783
1784                 iwl_mvm_set_bcast_filter(vif,
1785                                          &mvm->bcast_filters[i],
1786                                          &cmd->filters[data->current_filter]);
1787
1788                 /* skip current filter if it contains no attributes */
1789                 if (!cmd->filters[data->current_filter].num_attrs)
1790                         continue;
1791
1792                 /* attach the filter to current mac */
1793                 bcast_mac->attached_filters |=
1794                                 cpu_to_le16(BIT(data->current_filter));
1795
1796                 data->current_filter++;
1797         }
1798 }
1799
1800 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1801                                     struct iwl_bcast_filter_cmd *cmd)
1802 {
1803         struct iwl_bcast_iter_data iter_data = {
1804                 .mvm = mvm,
1805                 .cmd = cmd,
1806         };
1807
1808         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1809                 return false;
1810
1811         memset(cmd, 0, sizeof(*cmd));
1812         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1813         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1814
1815 #ifdef CONFIG_IWLWIFI_DEBUGFS
1816         /* use debugfs filters/macs if override is configured */
1817         if (mvm->dbgfs_bcast_filtering.override) {
1818                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1819                        sizeof(cmd->filters));
1820                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1821                        sizeof(cmd->macs));
1822                 return true;
1823         }
1824 #endif
1825
1826         /* if no filters are configured, do nothing */
1827         if (!mvm->bcast_filters)
1828                 return false;
1829
1830         /* configure and attach these filters for each associated sta vif */
1831         ieee80211_iterate_active_interfaces(
1832                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1833                 iwl_mvm_bcast_filter_iterator, &iter_data);
1834
1835         return true;
1836 }
1837
1838 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1839 {
1840         struct iwl_bcast_filter_cmd cmd;
1841
1842         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1843                 return 0;
1844
1845         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1846                 return 0;
1847
1848         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1849                                     sizeof(cmd), &cmd);
1850 }
1851 #else
1852 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1853 {
1854         return 0;
1855 }
1856 #endif
1857
1858 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1859                                     struct ieee80211_vif *vif)
1860 {
1861         struct iwl_mu_group_mgmt_cmd cmd = {};
1862
1863         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1864                WLAN_MEMBERSHIP_LEN);
1865         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1866                WLAN_USER_POSITION_LEN);
1867
1868         return iwl_mvm_send_cmd_pdu(mvm,
1869                                     WIDE_ID(DATA_PATH_GROUP,
1870                                             UPDATE_MU_GROUPS_CMD),
1871                                     0, sizeof(cmd), &cmd);
1872 }
1873
1874 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1875                                            struct ieee80211_vif *vif)
1876 {
1877         if (vif->mu_mimo_owner) {
1878                 struct iwl_mu_group_mgmt_notif *notif = _data;
1879
1880                 /*
1881                  * MU-MIMO Group Id action frame is little endian. We treat
1882                  * the data received from firmware as if it came from the
1883                  * action frame, so no conversion is needed.
1884                  */
1885                 ieee80211_update_mu_groups(vif,
1886                                            (u8 *)&notif->membership_status,
1887                                            (u8 *)&notif->user_position);
1888         }
1889 }
1890
1891 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1892                                struct iwl_rx_cmd_buffer *rxb)
1893 {
1894         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1895         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1896
1897         ieee80211_iterate_active_interfaces_atomic(
1898                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1899                         iwl_mvm_mu_mimo_iface_iterator, notif);
1900 }
1901
1902 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1903                                              struct ieee80211_vif *vif,
1904                                              struct ieee80211_bss_conf *bss_conf,
1905                                              u32 changes)
1906 {
1907         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1908         int ret;
1909
1910         /*
1911          * Re-calculate the tsf id, as the master-slave relations depend on the
1912          * beacon interval, which was not known when the station interface was
1913          * added.
1914          */
1915         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1916                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1917
1918         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1919             mvmvif->lqm_active)
1920                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1921                                      0, 0);
1922
1923         /*
1924          * If we're not associated yet, take the (new) BSSID before associating
1925          * so the firmware knows. If we're already associated, then use the old
1926          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1927          * branch for disassociation below.
1928          */
1929         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1930                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1931
1932         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1933         if (ret)
1934                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1935
1936         /* after sending it once, adopt mac80211 data */
1937         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1938         mvmvif->associated = bss_conf->assoc;
1939
1940         if (changes & BSS_CHANGED_ASSOC) {
1941                 if (bss_conf->assoc) {
1942                         /* clear statistics to get clean beacon counter */
1943                         iwl_mvm_request_statistics(mvm, true);
1944                         memset(&mvmvif->beacon_stats, 0,
1945                                sizeof(mvmvif->beacon_stats));
1946
1947                         /* add quota for this interface */
1948                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1949                         if (ret) {
1950                                 IWL_ERR(mvm, "failed to update quotas\n");
1951                                 return;
1952                         }
1953
1954                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1955                                      &mvm->status)) {
1956                                 /*
1957                                  * If we're restarting then the firmware will
1958                                  * obviously have lost synchronisation with
1959                                  * the AP. It will attempt to synchronise by
1960                                  * itself, but we can make it more reliable by
1961                                  * scheduling a session protection time event.
1962                                  *
1963                                  * The firmware needs to receive a beacon to
1964                                  * catch up with synchronisation, use 110% of
1965                                  * the beacon interval.
1966                                  *
1967                                  * Set a large maximum delay to allow for more
1968                                  * than a single interface.
1969                                  */
1970                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1971                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1972                                                         5 * dur, false);
1973                         }
1974
1975                         iwl_mvm_sf_update(mvm, vif, false);
1976                         iwl_mvm_power_vif_assoc(mvm, vif);
1977                         if (vif->p2p) {
1978                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1979                                 iwl_mvm_update_smps(mvm, vif,
1980                                                     IWL_MVM_SMPS_REQ_PROT,
1981                                                     IEEE80211_SMPS_DYNAMIC);
1982                         }
1983                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1984                         /*
1985                          * If update fails - SF might be running in associated
1986                          * mode while disassociated - which is forbidden.
1987                          */
1988                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1989                                   "Failed to update SF upon disassociation\n");
1990
1991                         /*
1992                          * If we get an assert during the connection (after the
1993                          * station has been added, but before the vif is set
1994                          * to associated), mac80211 will re-add the station and
1995                          * then configure the vif. Since the vif is not
1996                          * associated, we would remove the station here and
1997                          * this would fail the recovery.
1998                          */
1999                         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2000                                       &mvm->status)) {
2001                                 /*
2002                                  * Remove AP station now that
2003                                  * the MAC is unassoc
2004                                  */
2005                                 ret = iwl_mvm_rm_sta_id(mvm, vif,
2006                                                         mvmvif->ap_sta_id);
2007                                 if (ret)
2008                                         IWL_ERR(mvm,
2009                                                 "failed to remove AP station\n");
2010
2011                                 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2012                                         mvm->d0i3_ap_sta_id =
2013                                                 IWL_MVM_INVALID_STA;
2014                                 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2015                         }
2016
2017                         /* remove quota for this interface */
2018                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2019                         if (ret)
2020                                 IWL_ERR(mvm, "failed to update quotas\n");
2021
2022                         if (vif->p2p)
2023                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2024
2025                         /* this will take the cleared BSSID from bss_conf */
2026                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2027                         if (ret)
2028                                 IWL_ERR(mvm,
2029                                         "failed to update MAC %pM (clear after unassoc)\n",
2030                                         vif->addr);
2031                 }
2032
2033                 /*
2034                  * The firmware tracks the MU-MIMO group on its own.
2035                  * However, on HW restart we should restore this data.
2036                  */
2037                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2038                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2039                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2040                         if (ret)
2041                                 IWL_ERR(mvm,
2042                                         "failed to update VHT MU_MIMO groups\n");
2043                 }
2044
2045                 iwl_mvm_recalc_multicast(mvm);
2046                 iwl_mvm_configure_bcast_filter(mvm);
2047
2048                 /* reset rssi values */
2049                 mvmvif->bf_data.ave_beacon_signal = 0;
2050
2051                 iwl_mvm_bt_coex_vif_change(mvm);
2052                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2053                                     IEEE80211_SMPS_AUTOMATIC);
2054                 if (fw_has_capa(&mvm->fw->ucode_capa,
2055                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2056                         iwl_mvm_config_scan(mvm);
2057         }
2058
2059         if (changes & BSS_CHANGED_BEACON_INFO) {
2060                 /*
2061                  * We received a beacon from the associated AP so
2062                  * remove the session protection.
2063                  */
2064                 iwl_mvm_remove_time_event(mvm, mvmvif,
2065                                           &mvmvif->time_event_data);
2066
2067                 iwl_mvm_sf_update(mvm, vif, false);
2068                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2069         }
2070
2071         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2072                        /*
2073                         * Send power command on every beacon change,
2074                         * because we may have not enabled beacon abort yet.
2075                         */
2076                        BSS_CHANGED_BEACON_INFO)) {
2077                 ret = iwl_mvm_power_update_mac(mvm);
2078                 if (ret)
2079                         IWL_ERR(mvm, "failed to update power mode\n");
2080         }
2081
2082         if (changes & BSS_CHANGED_TXPOWER) {
2083                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2084                                 bss_conf->txpower);
2085                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2086         }
2087
2088         if (changes & BSS_CHANGED_CQM) {
2089                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2090                 /* reset cqm events tracking */
2091                 mvmvif->bf_data.last_cqm_event = 0;
2092                 if (mvmvif->bf_data.bf_enabled) {
2093                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2094                         if (ret)
2095                                 IWL_ERR(mvm,
2096                                         "failed to update CQM thresholds\n");
2097                 }
2098         }
2099
2100         if (changes & BSS_CHANGED_ARP_FILTER) {
2101                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2102                 iwl_mvm_configure_bcast_filter(mvm);
2103         }
2104 }
2105
2106 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2107                                  struct ieee80211_vif *vif)
2108 {
2109         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2110         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2111         int ret;
2112
2113         /*
2114          * iwl_mvm_mac_ctxt_add() might read directly from the device
2115          * (the system time), so make sure it is available.
2116          */
2117         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2118         if (ret)
2119                 return ret;
2120
2121         mutex_lock(&mvm->mutex);
2122
2123         /* Send the beacon template */
2124         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2125         if (ret)
2126                 goto out_unlock;
2127
2128         /*
2129          * Re-calculate the tsf id, as the master-slave relations depend on the
2130          * beacon interval, which was not known when the AP interface was added.
2131          */
2132         if (vif->type == NL80211_IFTYPE_AP)
2133                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2134
2135         mvmvif->ap_assoc_sta_count = 0;
2136
2137         /* Add the mac context */
2138         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2139         if (ret)
2140                 goto out_unlock;
2141
2142         /* Perform the binding */
2143         ret = iwl_mvm_binding_add_vif(mvm, vif);
2144         if (ret)
2145                 goto out_remove;
2146
2147         ret = iwl_mvm_add_mcast_sta(mvm, vif);
2148         if (ret)
2149                 goto out_unbind;
2150
2151         /* Send the bcast station. At this stage the TBTT and DTIM time events
2152          * are added and applied to the scheduler */
2153         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2154         if (ret)
2155                 goto out_rm_mcast;
2156
2157         /* must be set before quota calculations */
2158         mvmvif->ap_ibss_active = true;
2159
2160         /* power updated needs to be done before quotas */
2161         iwl_mvm_power_update_mac(mvm);
2162
2163         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2164         if (ret)
2165                 goto out_quota_failed;
2166
2167         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2168         if (vif->p2p && mvm->p2p_device_vif)
2169                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2170
2171         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2172
2173         iwl_mvm_bt_coex_vif_change(mvm);
2174
2175         /* we don't support TDLS during DCM */
2176         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2177                 iwl_mvm_teardown_tdls_peers(mvm);
2178
2179         goto out_unlock;
2180
2181 out_quota_failed:
2182         iwl_mvm_power_update_mac(mvm);
2183         mvmvif->ap_ibss_active = false;
2184         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2185 out_rm_mcast:
2186         iwl_mvm_rm_mcast_sta(mvm, vif);
2187 out_unbind:
2188         iwl_mvm_binding_remove_vif(mvm, vif);
2189 out_remove:
2190         iwl_mvm_mac_ctxt_remove(mvm, vif);
2191 out_unlock:
2192         mutex_unlock(&mvm->mutex);
2193         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2194         return ret;
2195 }
2196
2197 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2198                                  struct ieee80211_vif *vif)
2199 {
2200         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2201         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2202
2203         iwl_mvm_prepare_mac_removal(mvm, vif);
2204
2205         mutex_lock(&mvm->mutex);
2206
2207         /* Handle AP stop while in CSA */
2208         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2209                 iwl_mvm_remove_time_event(mvm, mvmvif,
2210                                           &mvmvif->time_event_data);
2211                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2212                 mvmvif->csa_countdown = false;
2213         }
2214
2215         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2216                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2217                 mvm->csa_tx_block_bcn_timeout = 0;
2218         }
2219
2220         mvmvif->ap_ibss_active = false;
2221         mvm->ap_last_beacon_gp2 = 0;
2222
2223         iwl_mvm_bt_coex_vif_change(mvm);
2224
2225         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2226
2227         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2228         if (vif->p2p && mvm->p2p_device_vif)
2229                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2230
2231         iwl_mvm_update_quotas(mvm, false, NULL);
2232
2233         /*
2234          * This is not very nice, but the simplest:
2235          * For older FWs removing the mcast sta before the bcast station may
2236          * cause assert 0x2b00.
2237          * This is fixed in later FW (which will stop beaconing when removing
2238          * bcast station).
2239          * So make the order of removal depend on the TLV
2240          */
2241         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2242                 iwl_mvm_rm_mcast_sta(mvm, vif);
2243         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2244         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2245                 iwl_mvm_rm_mcast_sta(mvm, vif);
2246         iwl_mvm_binding_remove_vif(mvm, vif);
2247
2248         iwl_mvm_power_update_mac(mvm);
2249
2250         iwl_mvm_mac_ctxt_remove(mvm, vif);
2251
2252         mutex_unlock(&mvm->mutex);
2253 }
2254
2255 static void
2256 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2257                                  struct ieee80211_vif *vif,
2258                                  struct ieee80211_bss_conf *bss_conf,
2259                                  u32 changes)
2260 {
2261         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2262
2263         /* Changes will be applied when the AP/IBSS is started */
2264         if (!mvmvif->ap_ibss_active)
2265                 return;
2266
2267         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2268                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2269             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2270                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2271
2272         /* Need to send a new beacon template to the FW */
2273         if (changes & BSS_CHANGED_BEACON &&
2274             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2275                 IWL_WARN(mvm, "Failed updating beacon data\n");
2276
2277         if (changes & BSS_CHANGED_TXPOWER) {
2278                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2279                                 bss_conf->txpower);
2280                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2281         }
2282 }
2283
2284 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2285                                      struct ieee80211_vif *vif,
2286                                      struct ieee80211_bss_conf *bss_conf,
2287                                      u32 changes)
2288 {
2289         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2290
2291         /*
2292          * iwl_mvm_bss_info_changed_station() might call
2293          * iwl_mvm_protect_session(), which reads directly from
2294          * the device (the system time), so make sure it is available.
2295          */
2296         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2297                 return;
2298
2299         mutex_lock(&mvm->mutex);
2300
2301         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2302                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2303
2304         switch (vif->type) {
2305         case NL80211_IFTYPE_STATION:
2306                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2307                 break;
2308         case NL80211_IFTYPE_AP:
2309         case NL80211_IFTYPE_ADHOC:
2310                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2311                 break;
2312         case NL80211_IFTYPE_MONITOR:
2313                 if (changes & BSS_CHANGED_MU_GROUPS)
2314                         iwl_mvm_update_mu_groups(mvm, vif);
2315                 break;
2316         default:
2317                 /* shouldn't happen */
2318                 WARN_ON_ONCE(1);
2319         }
2320
2321         mutex_unlock(&mvm->mutex);
2322         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2323 }
2324
2325 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2326                                struct ieee80211_vif *vif,
2327                                struct ieee80211_scan_request *hw_req)
2328 {
2329         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2330         int ret;
2331
2332         if (hw_req->req.n_channels == 0 ||
2333             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2334                 return -EINVAL;
2335
2336         mutex_lock(&mvm->mutex);
2337         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2338         mutex_unlock(&mvm->mutex);
2339
2340         return ret;
2341 }
2342
2343 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2344                                        struct ieee80211_vif *vif)
2345 {
2346         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2347
2348         mutex_lock(&mvm->mutex);
2349
2350         /* Due to a race condition, it's possible that mac80211 asks
2351          * us to stop a hw_scan when it's already stopped.  This can
2352          * happen, for instance, if we stopped the scan ourselves,
2353          * called ieee80211_scan_completed() and the userspace called
2354          * cancel scan scan before ieee80211_scan_work() could run.
2355          * To handle that, simply return if the scan is not running.
2356         */
2357         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2358                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2359
2360         mutex_unlock(&mvm->mutex);
2361 }
2362
2363 static void
2364 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2365                                   struct ieee80211_sta *sta, u16 tids,
2366                                   int num_frames,
2367                                   enum ieee80211_frame_release_type reason,
2368                                   bool more_data)
2369 {
2370         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2371
2372         /* Called when we need to transmit (a) frame(s) from mac80211 */
2373
2374         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2375                                           tids, more_data, false);
2376 }
2377
2378 static void
2379 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2380                                     struct ieee80211_sta *sta, u16 tids,
2381                                     int num_frames,
2382                                     enum ieee80211_frame_release_type reason,
2383                                     bool more_data)
2384 {
2385         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2386
2387         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2388
2389         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2390                                           tids, more_data, true);
2391 }
2392
2393 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2394                                      enum sta_notify_cmd cmd,
2395                                      struct ieee80211_sta *sta)
2396 {
2397         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2398         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2399         unsigned long txqs = 0, tids = 0;
2400         int tid;
2401
2402         spin_lock_bh(&mvmsta->lock);
2403         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2404                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2405
2406                 if (!iwl_mvm_is_dqa_supported(mvm) &&
2407                     tid_data->state != IWL_AGG_ON &&
2408                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2409                         continue;
2410
2411                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2412                         continue;
2413
2414                 __set_bit(tid_data->txq_id, &txqs);
2415
2416                 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2417                         continue;
2418
2419                 __set_bit(tid, &tids);
2420         }
2421
2422         switch (cmd) {
2423         case STA_NOTIFY_SLEEP:
2424                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2425                         ieee80211_sta_block_awake(hw, sta, true);
2426
2427                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2428                         ieee80211_sta_set_buffered(sta, tid, true);
2429
2430                 if (txqs)
2431                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2432                 /*
2433                  * The fw updates the STA to be asleep. Tx packets on the Tx
2434                  * queues to this station will not be transmitted. The fw will
2435                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2436                  */
2437                 break;
2438         case STA_NOTIFY_AWAKE:
2439                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2440                         break;
2441
2442                 if (txqs)
2443                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2444                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2445                 break;
2446         default:
2447                 break;
2448         }
2449         spin_unlock_bh(&mvmsta->lock);
2450 }
2451
2452 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2453                                    struct ieee80211_vif *vif,
2454                                    enum sta_notify_cmd cmd,
2455                                    struct ieee80211_sta *sta)
2456 {
2457         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2458 }
2459
2460 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2461 {
2462         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2463         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2464         struct ieee80211_sta *sta;
2465         struct iwl_mvm_sta *mvmsta;
2466         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2467
2468         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2469                 return;
2470
2471         rcu_read_lock();
2472         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2473         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2474                 rcu_read_unlock();
2475                 return;
2476         }
2477
2478         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2479
2480         if (!mvmsta->vif ||
2481             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2482                 rcu_read_unlock();
2483                 return;
2484         }
2485
2486         if (mvmsta->sleeping != sleeping) {
2487                 mvmsta->sleeping = sleeping;
2488                 __iwl_mvm_mac_sta_notify(mvm->hw,
2489                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2490                         sta);
2491                 ieee80211_sta_ps_transition(sta, sleeping);
2492         }
2493
2494         if (sleeping) {
2495                 switch (notif->type) {
2496                 case IWL_MVM_PM_EVENT_AWAKE:
2497                 case IWL_MVM_PM_EVENT_ASLEEP:
2498                         break;
2499                 case IWL_MVM_PM_EVENT_UAPSD:
2500                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2501                         break;
2502                 case IWL_MVM_PM_EVENT_PS_POLL:
2503                         ieee80211_sta_pspoll(sta);
2504                         break;
2505                 default:
2506                         break;
2507                 }
2508         }
2509
2510         rcu_read_unlock();
2511 }
2512
2513 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2514                                        struct ieee80211_vif *vif,
2515                                        struct ieee80211_sta *sta)
2516 {
2517         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2519
2520         /*
2521          * This is called before mac80211 does RCU synchronisation,
2522          * so here we already invalidate our internal RCU-protected
2523          * station pointer. The rest of the code will thus no longer
2524          * be able to find the station this way, and we don't rely
2525          * on further RCU synchronisation after the sta_state()
2526          * callback deleted the station.
2527          */
2528         mutex_lock(&mvm->mutex);
2529         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2530                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2531                                    ERR_PTR(-ENOENT));
2532
2533         mutex_unlock(&mvm->mutex);
2534 }
2535
2536 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2537                                 const u8 *bssid)
2538 {
2539         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2540                 return;
2541
2542         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2543                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2544                 return;
2545         }
2546
2547         if (!vif->p2p &&
2548             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2549                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2550                 return;
2551         }
2552
2553         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2554 }
2555
2556 static void
2557 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2558                            struct ieee80211_vif *vif, u8 *peer_addr,
2559                            enum nl80211_tdls_operation action)
2560 {
2561         struct iwl_fw_dbg_trigger_tlv *trig;
2562         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2563
2564         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2565                 return;
2566
2567         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2568         tdls_trig = (void *)trig->data;
2569         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2570                 return;
2571
2572         if (!(tdls_trig->action_bitmap & BIT(action)))
2573                 return;
2574
2575         if (tdls_trig->peer_mode &&
2576             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2577                 return;
2578
2579         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2580                                     "TDLS event occurred, peer %pM, action %d",
2581                                     peer_addr, action);
2582 }
2583
2584 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2585                                              struct iwl_mvm_sta *mvm_sta)
2586 {
2587         struct iwl_mvm_tid_data *tid_data;
2588         struct sk_buff *skb;
2589         int i;
2590
2591         spin_lock_bh(&mvm_sta->lock);
2592         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2593                 tid_data = &mvm_sta->tid_data[i];
2594                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2595                         ieee80211_free_txskb(mvm->hw, skb);
2596         }
2597         spin_unlock_bh(&mvm_sta->lock);
2598 }
2599
2600 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2601                                  struct ieee80211_vif *vif,
2602                                  struct ieee80211_sta *sta,
2603                                  enum ieee80211_sta_state old_state,
2604                                  enum ieee80211_sta_state new_state)
2605 {
2606         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2607         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2608         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2609         int ret;
2610
2611         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2612                            sta->addr, old_state, new_state);
2613
2614         /* this would be a mac80211 bug ... but don't crash */
2615         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2616                 return -EINVAL;
2617
2618         /* if a STA is being removed, reuse its ID */
2619         flush_work(&mvm->sta_drained_wk);
2620
2621         /*
2622          * If we are in a STA removal flow and in DQA mode:
2623          *
2624          * This is after the sync_rcu part, so the queues have already been
2625          * flushed. No more TXs on their way in mac80211's path, and no more in
2626          * the queues.
2627          * Also, we won't be getting any new TX frames for this station.
2628          * What we might have are deferred TX frames that need to be taken care
2629          * of.
2630          *
2631          * Drop any still-queued deferred-frame before removing the STA, and
2632          * make sure the worker is no longer handling frames for this STA.
2633          */
2634         if (old_state == IEEE80211_STA_NONE &&
2635             new_state == IEEE80211_STA_NOTEXIST &&
2636             iwl_mvm_is_dqa_supported(mvm)) {
2637                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2638                 flush_work(&mvm->add_stream_wk);
2639
2640                 /*
2641                  * No need to make sure deferred TX indication is off since the
2642                  * worker will already remove it if it was on
2643                  */
2644         }
2645
2646         mutex_lock(&mvm->mutex);
2647         /* track whether or not the station is associated */
2648         mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2649
2650         if (old_state == IEEE80211_STA_NOTEXIST &&
2651             new_state == IEEE80211_STA_NONE) {
2652                 /*
2653                  * Firmware bug - it'll crash if the beacon interval is less
2654                  * than 16. We can't avoid connecting at all, so refuse the
2655                  * station state change, this will cause mac80211 to abandon
2656                  * attempts to connect to this AP, and eventually wpa_s will
2657                  * blacklist the AP...
2658                  */
2659                 if (vif->type == NL80211_IFTYPE_STATION &&
2660                     vif->bss_conf.beacon_int < 16) {
2661                         IWL_ERR(mvm,
2662                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2663                                 sta->addr, vif->bss_conf.beacon_int);
2664                         ret = -EINVAL;
2665                         goto out_unlock;
2666                 }
2667
2668                 if (sta->tdls &&
2669                     (vif->p2p ||
2670                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2671                                                 IWL_MVM_TDLS_STA_COUNT ||
2672                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2673                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2674                         ret = -EBUSY;
2675                         goto out_unlock;
2676                 }
2677
2678                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2679                 if (sta->tdls && ret == 0) {
2680                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2681                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2682                                                    NL80211_TDLS_SETUP);
2683                 }
2684         } else if (old_state == IEEE80211_STA_NONE &&
2685                    new_state == IEEE80211_STA_AUTH) {
2686                 /*
2687                  * EBS may be disabled due to previous failures reported by FW.
2688                  * Reset EBS status here assuming environment has been changed.
2689                  */
2690                 mvm->last_ebs_successful = true;
2691                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2692                 ret = 0;
2693         } else if (old_state == IEEE80211_STA_AUTH &&
2694                    new_state == IEEE80211_STA_ASSOC) {
2695                 if (vif->type == NL80211_IFTYPE_AP) {
2696                         mvmvif->ap_assoc_sta_count++;
2697                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2698                 }
2699
2700                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2701                                      true);
2702                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2703         } else if (old_state == IEEE80211_STA_ASSOC &&
2704                    new_state == IEEE80211_STA_AUTHORIZED) {
2705
2706                 /* we don't support TDLS during DCM */
2707                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2708                         iwl_mvm_teardown_tdls_peers(mvm);
2709
2710                 if (sta->tdls)
2711                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2712                                                    NL80211_TDLS_ENABLE_LINK);
2713
2714                 /* enable beacon filtering */
2715                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2716                 ret = 0;
2717         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2718                    new_state == IEEE80211_STA_ASSOC) {
2719                 /* disable beacon filtering */
2720                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2721                 ret = 0;
2722         } else if (old_state == IEEE80211_STA_ASSOC &&
2723                    new_state == IEEE80211_STA_AUTH) {
2724                 if (vif->type == NL80211_IFTYPE_AP) {
2725                         mvmvif->ap_assoc_sta_count--;
2726                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2727                 }
2728                 ret = 0;
2729         } else if (old_state == IEEE80211_STA_AUTH &&
2730                    new_state == IEEE80211_STA_NONE) {
2731                 ret = 0;
2732         } else if (old_state == IEEE80211_STA_NONE &&
2733                    new_state == IEEE80211_STA_NOTEXIST) {
2734                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2735                 if (sta->tdls) {
2736                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2737                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2738                                                    NL80211_TDLS_DISABLE_LINK);
2739                 }
2740         } else {
2741                 ret = -EIO;
2742         }
2743  out_unlock:
2744         mutex_unlock(&mvm->mutex);
2745
2746         if (sta->tdls && ret == 0) {
2747                 if (old_state == IEEE80211_STA_NOTEXIST &&
2748                     new_state == IEEE80211_STA_NONE)
2749                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2750                 else if (old_state == IEEE80211_STA_NONE &&
2751                          new_state == IEEE80211_STA_NOTEXIST)
2752                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2753         }
2754
2755         return ret;
2756 }
2757
2758 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2759 {
2760         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2761
2762         mvm->rts_threshold = value;
2763
2764         return 0;
2765 }
2766
2767 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2768                                   struct ieee80211_vif *vif,
2769                                   struct ieee80211_sta *sta, u32 changed)
2770 {
2771         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2772
2773         if (vif->type == NL80211_IFTYPE_STATION &&
2774             changed & IEEE80211_RC_NSS_CHANGED)
2775                 iwl_mvm_sf_update(mvm, vif, false);
2776 }
2777
2778 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2779                                struct ieee80211_vif *vif, u16 ac,
2780                                const struct ieee80211_tx_queue_params *params)
2781 {
2782         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2783         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2784
2785         mvmvif->queue_params[ac] = *params;
2786
2787         /*
2788          * No need to update right away, we'll get BSS_CHANGED_QOS
2789          * The exception is P2P_DEVICE interface which needs immediate update.
2790          */
2791         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2792                 int ret;
2793
2794                 mutex_lock(&mvm->mutex);
2795                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2796                 mutex_unlock(&mvm->mutex);
2797                 return ret;
2798         }
2799         return 0;
2800 }
2801
2802 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2803                                       struct ieee80211_vif *vif)
2804 {
2805         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2806         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2807         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2808
2809         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2810                 return;
2811
2812         /*
2813          * iwl_mvm_protect_session() reads directly from the device
2814          * (the system time), so make sure it is available.
2815          */
2816         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2817                 return;
2818
2819         mutex_lock(&mvm->mutex);
2820         /* Try really hard to protect the session and hear a beacon */
2821         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2822         mutex_unlock(&mvm->mutex);
2823
2824         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2825 }
2826
2827 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2828                                         struct ieee80211_vif *vif,
2829                                         struct cfg80211_sched_scan_request *req,
2830                                         struct ieee80211_scan_ies *ies)
2831 {
2832         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2833
2834         int ret;
2835
2836         mutex_lock(&mvm->mutex);
2837
2838         if (!vif->bss_conf.idle) {
2839                 ret = -EBUSY;
2840                 goto out;
2841         }
2842
2843         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2844
2845 out:
2846         mutex_unlock(&mvm->mutex);
2847         return ret;
2848 }
2849
2850 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2851                                        struct ieee80211_vif *vif)
2852 {
2853         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2854         int ret;
2855
2856         mutex_lock(&mvm->mutex);
2857
2858         /* Due to a race condition, it's possible that mac80211 asks
2859          * us to stop a sched_scan when it's already stopped.  This
2860          * can happen, for instance, if we stopped the scan ourselves,
2861          * called ieee80211_sched_scan_stopped() and the userspace called
2862          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2863          * could run.  To handle this, simply return if the scan is
2864          * not running.
2865         */
2866         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2867                 mutex_unlock(&mvm->mutex);
2868                 return 0;
2869         }
2870
2871         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2872         mutex_unlock(&mvm->mutex);
2873         iwl_mvm_wait_for_async_handlers(mvm);
2874
2875         return ret;
2876 }
2877
2878 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2879                                enum set_key_cmd cmd,
2880                                struct ieee80211_vif *vif,
2881                                struct ieee80211_sta *sta,
2882                                struct ieee80211_key_conf *key)
2883 {
2884         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2885         struct iwl_mvm_sta *mvmsta;
2886         struct iwl_mvm_key_pn *ptk_pn;
2887         int keyidx = key->keyidx;
2888         int ret;
2889         u8 key_offset;
2890
2891         if (iwlwifi_mod_params.swcrypto) {
2892                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2893                 return -EOPNOTSUPP;
2894         }
2895
2896         switch (key->cipher) {
2897         case WLAN_CIPHER_SUITE_TKIP:
2898                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2899                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2900                 break;
2901         case WLAN_CIPHER_SUITE_CCMP:
2902         case WLAN_CIPHER_SUITE_GCMP:
2903         case WLAN_CIPHER_SUITE_GCMP_256:
2904                 if (!iwl_mvm_has_new_tx_api(mvm))
2905                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2906                 break;
2907         case WLAN_CIPHER_SUITE_AES_CMAC:
2908         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2909         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2910                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2911                 break;
2912         case WLAN_CIPHER_SUITE_WEP40:
2913         case WLAN_CIPHER_SUITE_WEP104:
2914                 /* For non-client mode, only use WEP keys for TX as we probably
2915                  * don't have a station yet anyway and would then have to keep
2916                  * track of the keys, linking them to each of the clients/peers
2917                  * as they appear. For now, don't do that, for performance WEP
2918                  * offload doesn't really matter much, but we need it for some
2919                  * other offload features in client mode.
2920                  */
2921                 if (vif->type != NL80211_IFTYPE_STATION)
2922                         return 0;
2923                 break;
2924         default:
2925                 /* currently FW supports only one optional cipher scheme */
2926                 if (hw->n_cipher_schemes &&
2927                     hw->cipher_schemes->cipher == key->cipher)
2928                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2929                 else
2930                         return -EOPNOTSUPP;
2931         }
2932
2933         mutex_lock(&mvm->mutex);
2934
2935         switch (cmd) {
2936         case SET_KEY:
2937                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2938                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2939                         /*
2940                          * GTK on AP interface is a TX-only key, return 0;
2941                          * on IBSS they're per-station and because we're lazy
2942                          * we don't support them for RX, so do the same.
2943                          * CMAC/GMAC in AP/IBSS modes must be done in software.
2944                          */
2945                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2946                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2947                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2948                                 ret = -EOPNOTSUPP;
2949                         else
2950                                 ret = 0;
2951
2952                         if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2953                             key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2954                             !iwl_mvm_has_new_tx_api(mvm)) {
2955                                 key->hw_key_idx = STA_KEY_IDX_INVALID;
2956                                 break;
2957                         }
2958                 }
2959
2960                 /* During FW restart, in order to restore the state as it was,
2961                  * don't try to reprogram keys we previously failed for.
2962                  */
2963                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2964                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2965                         IWL_DEBUG_MAC80211(mvm,
2966                                            "skip invalid idx key programming during restart\n");
2967                         ret = 0;
2968                         break;
2969                 }
2970
2971                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2972                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2973                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2974                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2975                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2976                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2977                         struct ieee80211_key_seq seq;
2978                         int tid, q;
2979
2980                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2981                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2982                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2983                                          mvm->trans->num_rx_queues *
2984                                                 sizeof(ptk_pn->q[0]),
2985                                          GFP_KERNEL);
2986                         if (!ptk_pn) {
2987                                 ret = -ENOMEM;
2988                                 break;
2989                         }
2990
2991                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2992                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2993                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2994                                         memcpy(ptk_pn->q[q].pn[tid],
2995                                                seq.ccmp.pn,
2996                                                IEEE80211_CCMP_PN_LEN);
2997                         }
2998
2999                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3000                 }
3001
3002                 /* in HW restart reuse the index, otherwise request a new one */
3003                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3004                         key_offset = key->hw_key_idx;
3005                 else
3006                         key_offset = STA_KEY_IDX_INVALID;
3007
3008                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3009                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3010                 if (ret) {
3011                         IWL_WARN(mvm, "set key failed\n");
3012                         /*
3013                          * can't add key for RX, but we don't need it
3014                          * in the device for TX so still return 0
3015                          */
3016                         key->hw_key_idx = STA_KEY_IDX_INVALID;
3017                         ret = 0;
3018                 }
3019
3020                 break;
3021         case DISABLE_KEY:
3022                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3023                         ret = 0;
3024                         break;
3025                 }
3026
3027                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3028                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3029                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3030                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3031                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3032                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3033                         ptk_pn = rcu_dereference_protected(
3034                                                 mvmsta->ptk_pn[keyidx],
3035                                                 lockdep_is_held(&mvm->mutex));
3036                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3037                         if (ptk_pn)
3038                                 kfree_rcu(ptk_pn, rcu_head);
3039                 }
3040
3041                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3042                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3043                 break;
3044         default:
3045                 ret = -EINVAL;
3046         }
3047
3048         mutex_unlock(&mvm->mutex);
3049         return ret;
3050 }
3051
3052 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3053                                         struct ieee80211_vif *vif,
3054                                         struct ieee80211_key_conf *keyconf,
3055                                         struct ieee80211_sta *sta,
3056                                         u32 iv32, u16 *phase1key)
3057 {
3058         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3059
3060         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3061                 return;
3062
3063         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3064 }
3065
3066
3067 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3068                                struct iwl_rx_packet *pkt, void *data)
3069 {
3070         struct iwl_mvm *mvm =
3071                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3072         struct iwl_hs20_roc_res *resp;
3073         int resp_len = iwl_rx_packet_payload_len(pkt);
3074         struct iwl_mvm_time_event_data *te_data = data;
3075
3076         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3077                 return true;
3078
3079         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3080                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3081                 return true;
3082         }
3083
3084         resp = (void *)pkt->data;
3085
3086         IWL_DEBUG_TE(mvm,
3087                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3088                      resp->status, resp->event_unique_id);
3089
3090         te_data->uid = le32_to_cpu(resp->event_unique_id);
3091         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3092                      te_data->uid);
3093
3094         spin_lock_bh(&mvm->time_event_lock);
3095         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3096         spin_unlock_bh(&mvm->time_event_lock);
3097
3098         return true;
3099 }
3100
3101 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3102 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3103 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3104 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3105 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3106 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3107                                     struct ieee80211_channel *channel,
3108                                     struct ieee80211_vif *vif,
3109                                     int duration)
3110 {
3111         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3112         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3113         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3114         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3115         struct iwl_notification_wait wait_time_event;
3116         u32 dtim_interval = vif->bss_conf.dtim_period *
3117                 vif->bss_conf.beacon_int;
3118         u32 req_dur, delay;
3119         struct iwl_hs20_roc_req aux_roc_req = {
3120                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3121                 .id_and_color =
3122                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3123                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3124                 /* Set the channel info data */
3125                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3126                         PHY_BAND_24 : PHY_BAND_5,
3127                 .channel_info.channel = channel->hw_value,
3128                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3129                 /* Set the time and duration */
3130                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3131          };
3132
3133         delay = AUX_ROC_MIN_DELAY;
3134         req_dur = MSEC_TO_TU(duration);
3135
3136         /*
3137          * If we are associated we want the delay time to be at least one
3138          * dtim interval so that the FW can wait until after the DTIM and
3139          * then start the time event, this will potentially allow us to
3140          * remain off-channel for the max duration.
3141          * Since we want to use almost a whole dtim interval we would also
3142          * like the delay to be for 2-3 dtim intervals, in case there are
3143          * other time events with higher priority.
3144          */
3145         if (vif->bss_conf.assoc) {
3146                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3147                 /* We cannot remain off-channel longer than the DTIM interval */
3148                 if (dtim_interval <= req_dur) {
3149                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3150                         if (req_dur <= AUX_ROC_MIN_DURATION)
3151                                 req_dur = dtim_interval -
3152                                         AUX_ROC_MIN_SAFETY_BUFFER;
3153                 }
3154         }
3155
3156         aux_roc_req.duration = cpu_to_le32(req_dur);
3157         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3158
3159         IWL_DEBUG_TE(mvm,
3160                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3161                      channel->hw_value, req_dur, duration, delay,
3162                      dtim_interval);
3163         /* Set the node address */
3164         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3165
3166         lockdep_assert_held(&mvm->mutex);
3167
3168         spin_lock_bh(&mvm->time_event_lock);
3169
3170         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3171                 spin_unlock_bh(&mvm->time_event_lock);
3172                 return -EIO;
3173         }
3174
3175         te_data->vif = vif;
3176         te_data->duration = duration;
3177         te_data->id = HOT_SPOT_CMD;
3178
3179         spin_unlock_bh(&mvm->time_event_lock);
3180
3181         /*
3182          * Use a notification wait, which really just processes the
3183          * command response and doesn't wait for anything, in order
3184          * to be able to process the response and get the UID inside
3185          * the RX path. Using CMD_WANT_SKB doesn't work because it
3186          * stores the buffer and then wakes up this thread, by which
3187          * time another notification (that the time event started)
3188          * might already be processed unsuccessfully.
3189          */
3190         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3191                                    time_event_response,
3192                                    ARRAY_SIZE(time_event_response),
3193                                    iwl_mvm_rx_aux_roc, te_data);
3194
3195         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3196                                    &aux_roc_req);
3197
3198         if (res) {
3199                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3200                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3201                 goto out_clear_te;
3202         }
3203
3204         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3205         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3206         /* should never fail */
3207         WARN_ON_ONCE(res);
3208
3209         if (res) {
3210  out_clear_te:
3211                 spin_lock_bh(&mvm->time_event_lock);
3212                 iwl_mvm_te_clear_data(mvm, te_data);
3213                 spin_unlock_bh(&mvm->time_event_lock);
3214         }
3215
3216         return res;
3217 }
3218
3219 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3220                        struct ieee80211_vif *vif,
3221                        struct ieee80211_channel *channel,
3222                        int duration,
3223                        enum ieee80211_roc_type type)
3224 {
3225         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3226         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3227         struct cfg80211_chan_def chandef;
3228         struct iwl_mvm_phy_ctxt *phy_ctxt;
3229         int ret, i;
3230
3231         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3232                            duration, type);
3233
3234         flush_work(&mvm->roc_done_wk);
3235
3236         mutex_lock(&mvm->mutex);
3237
3238         switch (vif->type) {
3239         case NL80211_IFTYPE_STATION:
3240                 if (fw_has_capa(&mvm->fw->ucode_capa,
3241                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3242                         /* Use aux roc framework (HS20) */
3243                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3244                                                        vif, duration);
3245                         goto out_unlock;
3246                 }
3247                 IWL_ERR(mvm, "hotspot not supported\n");
3248                 ret = -EINVAL;
3249                 goto out_unlock;
3250         case NL80211_IFTYPE_P2P_DEVICE:
3251                 /* handle below */
3252                 break;
3253         default:
3254                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3255                 ret = -EINVAL;
3256                 goto out_unlock;
3257         }
3258
3259         for (i = 0; i < NUM_PHY_CTX; i++) {
3260                 phy_ctxt = &mvm->phy_ctxts[i];
3261                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3262                         continue;
3263
3264                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3265                         /*
3266                          * Unbind the P2P_DEVICE from the current PHY context,
3267                          * and if the PHY context is not used remove it.
3268                          */
3269                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3270                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3271                                 goto out_unlock;
3272
3273                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3274
3275                         /* Bind the P2P_DEVICE to the current PHY Context */
3276                         mvmvif->phy_ctxt = phy_ctxt;
3277
3278                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3279                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3280                                 goto out_unlock;
3281
3282                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3283                         goto schedule_time_event;
3284                 }
3285         }
3286
3287         /* Need to update the PHY context only if the ROC channel changed */
3288         if (channel == mvmvif->phy_ctxt->channel)
3289                 goto schedule_time_event;
3290
3291         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3292
3293         /*
3294          * Change the PHY context configuration as it is currently referenced
3295          * only by the P2P Device MAC
3296          */
3297         if (mvmvif->phy_ctxt->ref == 1) {
3298                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3299                                                &chandef, 1, 1);
3300                 if (ret)
3301                         goto out_unlock;
3302         } else {
3303                 /*
3304                  * The PHY context is shared with other MACs. Need to remove the
3305                  * P2P Device from the binding, allocate an new PHY context and
3306                  * create a new binding
3307                  */
3308                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3309                 if (!phy_ctxt) {
3310                         ret = -ENOSPC;
3311                         goto out_unlock;
3312                 }
3313
3314                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3315                                                1, 1);
3316                 if (ret) {
3317                         IWL_ERR(mvm, "Failed to change PHY context\n");
3318                         goto out_unlock;
3319                 }
3320
3321                 /* Unbind the P2P_DEVICE from the current PHY context */
3322                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3323                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3324                         goto out_unlock;
3325
3326                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3327
3328                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3329                 mvmvif->phy_ctxt = phy_ctxt;
3330
3331                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3332                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3333                         goto out_unlock;
3334
3335                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3336         }
3337
3338 schedule_time_event:
3339         /* Schedule the time events */
3340         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3341
3342 out_unlock:
3343         mutex_unlock(&mvm->mutex);
3344         IWL_DEBUG_MAC80211(mvm, "leave\n");
3345         return ret;
3346 }
3347
3348 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3349 {
3350         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3351
3352         IWL_DEBUG_MAC80211(mvm, "enter\n");
3353
3354         mutex_lock(&mvm->mutex);
3355         iwl_mvm_stop_roc(mvm);
3356         mutex_unlock(&mvm->mutex);
3357
3358         IWL_DEBUG_MAC80211(mvm, "leave\n");
3359         return 0;
3360 }
3361
3362 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3363                                  struct ieee80211_chanctx_conf *ctx)
3364 {
3365         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3366         struct iwl_mvm_phy_ctxt *phy_ctxt;
3367         int ret;
3368
3369         lockdep_assert_held(&mvm->mutex);
3370
3371         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3372
3373         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3374         if (!phy_ctxt) {
3375                 ret = -ENOSPC;
3376                 goto out;
3377         }
3378
3379         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3380                                        ctx->rx_chains_static,
3381                                        ctx->rx_chains_dynamic);
3382         if (ret) {
3383                 IWL_ERR(mvm, "Failed to add PHY context\n");
3384                 goto out;
3385         }
3386
3387         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3388         *phy_ctxt_id = phy_ctxt->id;
3389 out:
3390         return ret;
3391 }
3392
3393 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3394                                struct ieee80211_chanctx_conf *ctx)
3395 {
3396         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3397         int ret;
3398
3399         mutex_lock(&mvm->mutex);
3400         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3401         mutex_unlock(&mvm->mutex);
3402
3403         return ret;
3404 }
3405
3406 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3407                                      struct ieee80211_chanctx_conf *ctx)
3408 {
3409         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3410         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3411
3412         lockdep_assert_held(&mvm->mutex);
3413
3414         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3415 }
3416
3417 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3418                                    struct ieee80211_chanctx_conf *ctx)
3419 {
3420         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3421
3422         mutex_lock(&mvm->mutex);
3423         __iwl_mvm_remove_chanctx(mvm, ctx);
3424         mutex_unlock(&mvm->mutex);
3425 }
3426
3427 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3428                                    struct ieee80211_chanctx_conf *ctx,
3429                                    u32 changed)
3430 {
3431         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3432         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3433         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3434
3435         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3436                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3437                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3438                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3439                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3440                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3441                       phy_ctxt->ref, changed))
3442                 return;
3443
3444         mutex_lock(&mvm->mutex);
3445         iwl_mvm_bt_coex_vif_change(mvm);
3446         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3447                                  ctx->rx_chains_static,
3448                                  ctx->rx_chains_dynamic);
3449         mutex_unlock(&mvm->mutex);
3450 }
3451
3452 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3453                                         struct ieee80211_vif *vif,
3454                                         struct ieee80211_chanctx_conf *ctx,
3455                                         bool switching_chanctx)
3456 {
3457         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3458         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3459         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3460         int ret;
3461
3462         lockdep_assert_held(&mvm->mutex);
3463
3464         mvmvif->phy_ctxt = phy_ctxt;
3465
3466         switch (vif->type) {
3467         case NL80211_IFTYPE_AP:
3468                 /* only needed if we're switching chanctx (i.e. during CSA) */
3469                 if (switching_chanctx) {
3470                         mvmvif->ap_ibss_active = true;
3471                         break;
3472                 }
3473         case NL80211_IFTYPE_ADHOC:
3474                 /*
3475                  * The AP binding flow is handled as part of the start_ap flow
3476                  * (in bss_info_changed), similarly for IBSS.
3477                  */
3478                 ret = 0;
3479                 goto out;
3480         case NL80211_IFTYPE_STATION:
3481                 break;
3482         case NL80211_IFTYPE_MONITOR:
3483                 /* always disable PS when a monitor interface is active */
3484                 mvmvif->ps_disabled = true;
3485                 break;
3486         default:
3487                 ret = -EINVAL;
3488                 goto out;
3489         }
3490
3491         ret = iwl_mvm_binding_add_vif(mvm, vif);
3492         if (ret)
3493                 goto out;
3494
3495         /*
3496          * Power state must be updated before quotas,
3497          * otherwise fw will complain.
3498          */
3499         iwl_mvm_power_update_mac(mvm);
3500
3501         /* Setting the quota at this stage is only required for monitor
3502          * interfaces. For the other types, the bss_info changed flow
3503          * will handle quota settings.
3504          */
3505         if (vif->type == NL80211_IFTYPE_MONITOR) {
3506                 mvmvif->monitor_active = true;
3507                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3508                 if (ret)
3509                         goto out_remove_binding;
3510
3511                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3512                 if (ret)
3513                         goto out_remove_binding;
3514
3515         }
3516
3517         /* Handle binding during CSA */
3518         if (vif->type == NL80211_IFTYPE_AP) {
3519                 iwl_mvm_update_quotas(mvm, false, NULL);
3520                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3521         }
3522
3523         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3524                 u32 duration = 2 * vif->bss_conf.beacon_int;
3525
3526                 /* iwl_mvm_protect_session() reads directly from the
3527                  * device (the system time), so make sure it is
3528                  * available.
3529                  */
3530                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3531                 if (ret)
3532                         goto out_remove_binding;
3533
3534                 /* Protect the session to make sure we hear the first
3535                  * beacon on the new channel.
3536                  */
3537                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3538                                         vif->bss_conf.beacon_int / 2,
3539                                         true);
3540
3541                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3542
3543                 iwl_mvm_update_quotas(mvm, false, NULL);
3544         }
3545
3546         goto out;
3547
3548 out_remove_binding:
3549         iwl_mvm_binding_remove_vif(mvm, vif);
3550         iwl_mvm_power_update_mac(mvm);
3551 out:
3552         if (ret)
3553                 mvmvif->phy_ctxt = NULL;
3554         return ret;
3555 }
3556 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3557                                       struct ieee80211_vif *vif,
3558                                       struct ieee80211_chanctx_conf *ctx)
3559 {
3560         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3561         int ret;
3562
3563         mutex_lock(&mvm->mutex);
3564         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3565         mutex_unlock(&mvm->mutex);
3566
3567         return ret;
3568 }
3569
3570 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3571                                            struct ieee80211_vif *vif,
3572                                            struct ieee80211_chanctx_conf *ctx,
3573                                            bool switching_chanctx)
3574 {
3575         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3576         struct ieee80211_vif *disabled_vif = NULL;
3577
3578         lockdep_assert_held(&mvm->mutex);
3579
3580         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3581
3582         switch (vif->type) {
3583         case NL80211_IFTYPE_ADHOC:
3584                 goto out;
3585         case NL80211_IFTYPE_MONITOR:
3586                 mvmvif->monitor_active = false;
3587                 mvmvif->ps_disabled = false;
3588                 iwl_mvm_rm_snif_sta(mvm, vif);
3589                 break;
3590         case NL80211_IFTYPE_AP:
3591                 /* This part is triggered only during CSA */
3592                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3593                         goto out;
3594
3595                 mvmvif->csa_countdown = false;
3596
3597                 /* Set CS bit on all the stations */
3598                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3599
3600                 /* Save blocked iface, the timeout is set on the next beacon */
3601                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3602
3603                 mvmvif->ap_ibss_active = false;
3604                 break;
3605         case NL80211_IFTYPE_STATION:
3606                 if (!switching_chanctx)
3607                         break;
3608
3609                 disabled_vif = vif;
3610
3611                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3612                 break;
3613         default:
3614                 break;
3615         }
3616
3617         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3618         iwl_mvm_binding_remove_vif(mvm, vif);
3619
3620 out:
3621         mvmvif->phy_ctxt = NULL;
3622         iwl_mvm_power_update_mac(mvm);
3623 }
3624
3625 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3626                                          struct ieee80211_vif *vif,
3627                                          struct ieee80211_chanctx_conf *ctx)
3628 {
3629         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3630
3631         mutex_lock(&mvm->mutex);
3632         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3633         mutex_unlock(&mvm->mutex);
3634 }
3635
3636 static int
3637 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3638                                 struct ieee80211_vif_chanctx_switch *vifs)
3639 {
3640         int ret;
3641
3642         mutex_lock(&mvm->mutex);
3643         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3644         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3645
3646         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3647         if (ret) {
3648                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3649                 goto out_reassign;
3650         }
3651
3652         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3653                                            true);
3654         if (ret) {
3655                 IWL_ERR(mvm,
3656                         "failed to assign new_ctx during channel switch\n");
3657                 goto out_remove;
3658         }
3659
3660         /* we don't support TDLS during DCM - can be caused by channel switch */
3661         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3662                 iwl_mvm_teardown_tdls_peers(mvm);
3663
3664         goto out;
3665
3666 out_remove:
3667         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3668
3669 out_reassign:
3670         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3671                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3672                 goto out_restart;
3673         }
3674
3675         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3676                                          true)) {
3677                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3678                 goto out_restart;
3679         }
3680
3681         goto out;
3682
3683 out_restart:
3684         /* things keep failing, better restart the hw */
3685         iwl_mvm_nic_restart(mvm, false);
3686
3687 out:
3688         mutex_unlock(&mvm->mutex);
3689
3690         return ret;
3691 }
3692
3693 static int
3694 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3695                                     struct ieee80211_vif_chanctx_switch *vifs)
3696 {
3697         int ret;
3698
3699         mutex_lock(&mvm->mutex);
3700         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3701
3702         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3703                                            true);
3704         if (ret) {
3705                 IWL_ERR(mvm,
3706                         "failed to assign new_ctx during channel switch\n");
3707                 goto out_reassign;
3708         }
3709
3710         goto out;
3711
3712 out_reassign:
3713         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3714                                          true)) {
3715                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3716                 goto out_restart;
3717         }
3718
3719         goto out;
3720
3721 out_restart:
3722         /* things keep failing, better restart the hw */
3723         iwl_mvm_nic_restart(mvm, false);
3724
3725 out:
3726         mutex_unlock(&mvm->mutex);
3727
3728         return ret;
3729 }
3730
3731 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3732                                       struct ieee80211_vif_chanctx_switch *vifs,
3733                                       int n_vifs,
3734                                       enum ieee80211_chanctx_switch_mode mode)
3735 {
3736         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3737         int ret;
3738
3739         /* we only support a single-vif right now */
3740         if (n_vifs > 1)
3741                 return -EOPNOTSUPP;
3742
3743         switch (mode) {
3744         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3745                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3746                 break;
3747         case CHANCTX_SWMODE_REASSIGN_VIF:
3748                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3749                 break;
3750         default:
3751                 ret = -EOPNOTSUPP;
3752                 break;
3753         }
3754
3755         return ret;
3756 }
3757
3758 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3759 {
3760         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3761
3762         return mvm->ibss_manager;
3763 }
3764
3765 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3766                            struct ieee80211_sta *sta,
3767                            bool set)
3768 {
3769         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3770         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3771
3772         if (!mvm_sta || !mvm_sta->vif) {
3773                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3774                 return -EINVAL;
3775         }
3776
3777         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3778 }
3779
3780 #ifdef CONFIG_NL80211_TESTMODE
3781 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3782         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3783         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3784         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3785 };
3786
3787 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3788                                       struct ieee80211_vif *vif,
3789                                       void *data, int len)
3790 {
3791         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3792         int err;
3793         u32 noa_duration;
3794
3795         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3796                         NULL);
3797         if (err)
3798                 return err;
3799
3800         if (!tb[IWL_MVM_TM_ATTR_CMD])
3801                 return -EINVAL;
3802
3803         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3804         case IWL_MVM_TM_CMD_SET_NOA:
3805                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3806                     !vif->bss_conf.enable_beacon ||
3807                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3808                         return -EINVAL;
3809
3810                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3811                 if (noa_duration >= vif->bss_conf.beacon_int)
3812                         return -EINVAL;
3813
3814                 mvm->noa_duration = noa_duration;
3815                 mvm->noa_vif = vif;
3816
3817                 return iwl_mvm_update_quotas(mvm, false, NULL);
3818         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3819                 /* must be associated client vif - ignore authorized */
3820                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3821                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3822                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3823                         return -EINVAL;
3824
3825                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3826                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3827                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3828         }
3829
3830         return -EOPNOTSUPP;
3831 }
3832
3833 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3834                                     struct ieee80211_vif *vif,
3835                                     void *data, int len)
3836 {
3837         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3838         int err;
3839
3840         mutex_lock(&mvm->mutex);
3841         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3842         mutex_unlock(&mvm->mutex);
3843
3844         return err;
3845 }
3846 #endif
3847
3848 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3849                                    struct ieee80211_vif *vif,
3850                                    struct ieee80211_channel_switch *chsw)
3851 {
3852         /* By implementing this operation, we prevent mac80211 from
3853          * starting its own channel switch timer, so that we can call
3854          * ieee80211_chswitch_done() ourselves at the right time
3855          * (which is when the absence time event starts).
3856          */
3857
3858         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3859                            "dummy channel switch op\n");
3860 }
3861
3862 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3863                                       struct ieee80211_vif *vif,
3864                                       struct ieee80211_channel_switch *chsw)
3865 {
3866         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3867         struct ieee80211_vif *csa_vif;
3868         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3869         u32 apply_time;
3870         int ret;
3871
3872         mutex_lock(&mvm->mutex);
3873
3874         mvmvif->csa_failed = false;
3875
3876         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3877                            chsw->chandef.center_freq1);
3878
3879         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3880
3881         switch (vif->type) {
3882         case NL80211_IFTYPE_AP:
3883                 csa_vif =
3884                         rcu_dereference_protected(mvm->csa_vif,
3885                                                   lockdep_is_held(&mvm->mutex));
3886                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3887                               "Another CSA is already in progress")) {
3888                         ret = -EBUSY;
3889                         goto out_unlock;
3890                 }
3891
3892                 /* we still didn't unblock tx. prevent new CS meanwhile */
3893                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3894                                               lockdep_is_held(&mvm->mutex))) {
3895                         ret = -EBUSY;
3896                         goto out_unlock;
3897                 }
3898
3899                 rcu_assign_pointer(mvm->csa_vif, vif);
3900
3901                 if (WARN_ONCE(mvmvif->csa_countdown,
3902                               "Previous CSA countdown didn't complete")) {
3903                         ret = -EBUSY;
3904                         goto out_unlock;
3905                 }
3906
3907                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3908
3909                 break;
3910         case NL80211_IFTYPE_STATION:
3911                 if (mvmvif->lqm_active)
3912                         iwl_mvm_send_lqm_cmd(vif,
3913                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3914                                              0, 0);
3915
3916                 /* Schedule the time event to a bit before beacon 1,
3917                  * to make sure we're in the new channel when the
3918                  * GO/AP arrives.
3919                  */
3920                 apply_time = chsw->device_timestamp +
3921                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3922                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3923
3924                 if (chsw->block_tx)
3925                         iwl_mvm_csa_client_absent(mvm, vif);
3926
3927                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3928                                             apply_time);
3929                 if (mvmvif->bf_data.bf_enabled) {
3930                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3931                         if (ret)
3932                                 goto out_unlock;
3933                 }
3934
3935                 break;
3936         default:
3937                 break;
3938         }
3939
3940         mvmvif->ps_disabled = true;
3941
3942         ret = iwl_mvm_power_update_ps(mvm);
3943         if (ret)
3944                 goto out_unlock;
3945
3946         /* we won't be on this channel any longer */
3947         iwl_mvm_teardown_tdls_peers(mvm);
3948
3949 out_unlock:
3950         mutex_unlock(&mvm->mutex);
3951
3952         return ret;
3953 }
3954
3955 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3956                                        struct ieee80211_vif *vif)
3957 {
3958         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3959         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3960         int ret;
3961
3962         mutex_lock(&mvm->mutex);
3963
3964         if (mvmvif->csa_failed) {
3965                 mvmvif->csa_failed = false;
3966                 ret = -EIO;
3967                 goto out_unlock;
3968         }
3969
3970         if (vif->type == NL80211_IFTYPE_STATION) {
3971                 struct iwl_mvm_sta *mvmsta;
3972
3973                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3974                                                           mvmvif->ap_sta_id);
3975
3976                 if (WARN_ON(!mvmsta)) {
3977                         ret = -EIO;
3978                         goto out_unlock;
3979                 }
3980
3981                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3982
3983                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3984
3985                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3986                 if (ret)
3987                         goto out_unlock;
3988
3989                 iwl_mvm_stop_session_protection(mvm, vif);
3990         }
3991
3992         mvmvif->ps_disabled = false;
3993
3994         ret = iwl_mvm_power_update_ps(mvm);
3995
3996 out_unlock:
3997         mutex_unlock(&mvm->mutex);
3998
3999         return ret;
4000 }
4001
4002 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4003                               struct ieee80211_vif *vif, u32 queues, bool drop)
4004 {
4005         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4006         struct iwl_mvm_vif *mvmvif;
4007         struct iwl_mvm_sta *mvmsta;
4008         struct ieee80211_sta *sta;
4009         int i;
4010         u32 msk = 0;
4011
4012         if (!vif || vif->type != NL80211_IFTYPE_STATION)
4013                 return;
4014
4015         /* Make sure we're done with the deferred traffic before flushing */
4016         if (iwl_mvm_is_dqa_supported(mvm))
4017                 flush_work(&mvm->add_stream_wk);
4018
4019         mutex_lock(&mvm->mutex);
4020         mvmvif = iwl_mvm_vif_from_mac80211(vif);
4021
4022         /* flush the AP-station and all TDLS peers */
4023         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4024                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4025                                                 lockdep_is_held(&mvm->mutex));
4026                 if (IS_ERR_OR_NULL(sta))
4027                         continue;
4028
4029                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4030                 if (mvmsta->vif != vif)
4031                         continue;
4032
4033                 /* make sure only TDLS peers or the AP are flushed */
4034                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4035
4036                 if (drop) {
4037                         if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4038                                 IWL_ERR(mvm, "flush request fail\n");
4039                 } else {
4040                         msk |= mvmsta->tfd_queue_msk;
4041                         if (iwl_mvm_has_new_tx_api(mvm))
4042                                 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4043                 }
4044         }
4045
4046         mutex_unlock(&mvm->mutex);
4047
4048         /* this can take a while, and we may need/want other operations
4049          * to succeed while doing this, so do it without the mutex held
4050          */
4051         if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4052                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4053 }
4054
4055 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4056                                   struct survey_info *survey)
4057 {
4058         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4059         int ret;
4060
4061         memset(survey, 0, sizeof(*survey));
4062
4063         /* only support global statistics right now */
4064         if (idx != 0)
4065                 return -ENOENT;
4066
4067         if (!fw_has_capa(&mvm->fw->ucode_capa,
4068                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4069                 return -ENOENT;
4070
4071         mutex_lock(&mvm->mutex);
4072
4073         if (iwl_mvm_firmware_running(mvm)) {
4074                 ret = iwl_mvm_request_statistics(mvm, false);
4075                 if (ret)
4076                         goto out;
4077         }
4078
4079         survey->filled = SURVEY_INFO_TIME |
4080                          SURVEY_INFO_TIME_RX |
4081                          SURVEY_INFO_TIME_TX |
4082                          SURVEY_INFO_TIME_SCAN;
4083         survey->time = mvm->accu_radio_stats.on_time_rf +
4084                        mvm->radio_stats.on_time_rf;
4085         do_div(survey->time, USEC_PER_MSEC);
4086
4087         survey->time_rx = mvm->accu_radio_stats.rx_time +
4088                           mvm->radio_stats.rx_time;
4089         do_div(survey->time_rx, USEC_PER_MSEC);
4090
4091         survey->time_tx = mvm->accu_radio_stats.tx_time +
4092                           mvm->radio_stats.tx_time;
4093         do_div(survey->time_tx, USEC_PER_MSEC);
4094
4095         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4096                             mvm->radio_stats.on_time_scan;
4097         do_div(survey->time_scan, USEC_PER_MSEC);
4098
4099         ret = 0;
4100  out:
4101         mutex_unlock(&mvm->mutex);
4102         return ret;
4103 }
4104
4105 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4106                                        struct ieee80211_vif *vif,
4107                                        struct ieee80211_sta *sta,
4108                                        struct station_info *sinfo)
4109 {
4110         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4111         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4112         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4113
4114         if (mvmsta->avg_energy) {
4115                 sinfo->signal_avg = mvmsta->avg_energy;
4116                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4117         }
4118
4119         if (!fw_has_capa(&mvm->fw->ucode_capa,
4120                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4121                 return;
4122
4123         /* if beacon filtering isn't on mac80211 does it anyway */
4124         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4125                 return;
4126
4127         if (!vif->bss_conf.assoc)
4128                 return;
4129
4130         mutex_lock(&mvm->mutex);
4131
4132         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4133                 goto unlock;
4134
4135         if (iwl_mvm_request_statistics(mvm, false))
4136                 goto unlock;
4137
4138         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4139                            mvmvif->beacon_stats.accu_num_beacons;
4140         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4141         if (mvmvif->beacon_stats.avg_signal) {
4142                 /* firmware only reports a value after RXing a few beacons */
4143                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4144                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4145         }
4146  unlock:
4147         mutex_unlock(&mvm->mutex);
4148 }
4149
4150 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4151                                         struct ieee80211_vif *vif,
4152                                         const struct ieee80211_event *event)
4153 {
4154 #define CHECK_MLME_TRIGGER(_cnt, _fmt...)                       \
4155         do {                                                    \
4156                 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))   \
4157                         break;                                  \
4158                 iwl_mvm_fw_dbg_collect_trig(mvm, trig, _fmt);   \
4159         } while (0)
4160
4161         struct iwl_fw_dbg_trigger_tlv *trig;
4162         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4163
4164         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4165                 return;
4166
4167         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4168         trig_mlme = (void *)trig->data;
4169         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4170                 return;
4171
4172         if (event->u.mlme.data == ASSOC_EVENT) {
4173                 if (event->u.mlme.status == MLME_DENIED)
4174                         CHECK_MLME_TRIGGER(stop_assoc_denied,
4175                                            "DENIED ASSOC: reason %d",
4176                                             event->u.mlme.reason);
4177                 else if (event->u.mlme.status == MLME_TIMEOUT)
4178                         CHECK_MLME_TRIGGER(stop_assoc_timeout,
4179                                            "ASSOC TIMEOUT");
4180         } else if (event->u.mlme.data == AUTH_EVENT) {
4181                 if (event->u.mlme.status == MLME_DENIED)
4182                         CHECK_MLME_TRIGGER(stop_auth_denied,
4183                                            "DENIED AUTH: reason %d",
4184                                            event->u.mlme.reason);
4185                 else if (event->u.mlme.status == MLME_TIMEOUT)
4186                         CHECK_MLME_TRIGGER(stop_auth_timeout,
4187                                            "AUTH TIMEOUT");
4188         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4189                 CHECK_MLME_TRIGGER(stop_rx_deauth,
4190                                    "DEAUTH RX %d", event->u.mlme.reason);
4191         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4192                 CHECK_MLME_TRIGGER(stop_tx_deauth,
4193                                    "DEAUTH TX %d", event->u.mlme.reason);
4194         }
4195 #undef CHECK_MLME_TRIGGER
4196 }
4197
4198 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4199                                           struct ieee80211_vif *vif,
4200                                           const struct ieee80211_event *event)
4201 {
4202         struct iwl_fw_dbg_trigger_tlv *trig;
4203         struct iwl_fw_dbg_trigger_ba *ba_trig;
4204
4205         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4206                 return;
4207
4208         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4209         ba_trig = (void *)trig->data;
4210         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4211                 return;
4212
4213         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4214                 return;
4215
4216         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4217                                     "BAR received from %pM, tid %d, ssn %d",
4218                                     event->u.ba.sta->addr, event->u.ba.tid,
4219                                     event->u.ba.ssn);
4220 }
4221
4222 static void
4223 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4224                                      struct ieee80211_vif *vif,
4225                                      const struct ieee80211_event *event)
4226 {
4227         struct iwl_fw_dbg_trigger_tlv *trig;
4228         struct iwl_fw_dbg_trigger_ba *ba_trig;
4229
4230         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4231                 return;
4232
4233         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4234         ba_trig = (void *)trig->data;
4235         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4236                 return;
4237
4238         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4239                 return;
4240
4241         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4242                                     "Frame from %pM timed out, tid %d",
4243                                     event->u.ba.sta->addr, event->u.ba.tid);
4244 }
4245
4246 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4247                                        struct ieee80211_vif *vif,
4248                                        const struct ieee80211_event *event)
4249 {
4250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4251
4252         switch (event->type) {
4253         case MLME_EVENT:
4254                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4255                 break;
4256         case BAR_RX_EVENT:
4257                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4258                 break;
4259         case BA_FRAME_TIMEOUT:
4260                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4261                 break;
4262         default:
4263                 break;
4264         }
4265 }
4266
4267 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4268                                      struct iwl_mvm_internal_rxq_notif *notif,
4269                                      u32 size)
4270 {
4271         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4272         int ret;
4273
4274         lockdep_assert_held(&mvm->mutex);
4275
4276         /* TODO - remove a000 disablement when we have RXQ config API */
4277         if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4278                 return;
4279
4280         notif->cookie = mvm->queue_sync_cookie;
4281
4282         if (notif->sync)
4283                 atomic_set(&mvm->queue_sync_counter,
4284                            mvm->trans->num_rx_queues);
4285
4286         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4287         if (ret) {
4288                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4289                 goto out;
4290         }
4291
4292         if (notif->sync) {
4293                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4294                                          atomic_read(&mvm->queue_sync_counter) == 0 ||
4295                                          iwl_mvm_is_radio_killed(mvm),
4296                                          HZ);
4297                 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4298         }
4299
4300 out:
4301         atomic_set(&mvm->queue_sync_counter, 0);
4302         mvm->queue_sync_cookie++;
4303 }
4304
4305 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4306 {
4307         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4308         struct iwl_mvm_internal_rxq_notif data = {
4309                 .type = IWL_MVM_RXQ_EMPTY,
4310                 .sync = 1,
4311         };
4312
4313         mutex_lock(&mvm->mutex);
4314         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4315         mutex_unlock(&mvm->mutex);
4316 }
4317
4318 const struct ieee80211_ops iwl_mvm_hw_ops = {
4319         .tx = iwl_mvm_mac_tx,
4320         .ampdu_action = iwl_mvm_mac_ampdu_action,
4321         .start = iwl_mvm_mac_start,
4322         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4323         .stop = iwl_mvm_mac_stop,
4324         .add_interface = iwl_mvm_mac_add_interface,
4325         .remove_interface = iwl_mvm_mac_remove_interface,
4326         .config = iwl_mvm_mac_config,
4327         .prepare_multicast = iwl_mvm_prepare_multicast,
4328         .configure_filter = iwl_mvm_configure_filter,
4329         .config_iface_filter = iwl_mvm_config_iface_filter,
4330         .bss_info_changed = iwl_mvm_bss_info_changed,
4331         .hw_scan = iwl_mvm_mac_hw_scan,
4332         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4333         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4334         .sta_state = iwl_mvm_mac_sta_state,
4335         .sta_notify = iwl_mvm_mac_sta_notify,
4336         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4337         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4338         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4339         .sta_rc_update = iwl_mvm_sta_rc_update,
4340         .conf_tx = iwl_mvm_mac_conf_tx,
4341         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4342         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4343         .flush = iwl_mvm_mac_flush,
4344         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4345         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4346         .set_key = iwl_mvm_mac_set_key,
4347         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4348         .remain_on_channel = iwl_mvm_roc,
4349         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4350         .add_chanctx = iwl_mvm_add_chanctx,
4351         .remove_chanctx = iwl_mvm_remove_chanctx,
4352         .change_chanctx = iwl_mvm_change_chanctx,
4353         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4354         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4355         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4356
4357         .start_ap = iwl_mvm_start_ap_ibss,
4358         .stop_ap = iwl_mvm_stop_ap_ibss,
4359         .join_ibss = iwl_mvm_start_ap_ibss,
4360         .leave_ibss = iwl_mvm_stop_ap_ibss,
4361
4362         .tx_last_beacon = iwl_mvm_tx_last_beacon,
4363
4364         .set_tim = iwl_mvm_set_tim,
4365
4366         .channel_switch = iwl_mvm_channel_switch,
4367         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4368         .post_channel_switch = iwl_mvm_post_channel_switch,
4369
4370         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4371         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4372         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4373
4374         .event_callback = iwl_mvm_mac_event_callback,
4375
4376         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4377
4378         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4379
4380 #ifdef CONFIG_PM_SLEEP
4381         /* look at d3.c */
4382         .suspend = iwl_mvm_suspend,
4383         .resume = iwl_mvm_resume,
4384         .set_wakeup = iwl_mvm_set_wakeup,
4385         .set_rekey_data = iwl_mvm_set_rekey_data,
4386 #if IS_ENABLED(CONFIG_IPV6)
4387         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4388 #endif
4389         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4390 #endif
4391         .get_survey = iwl_mvm_mac_get_survey,
4392         .sta_statistics = iwl_mvm_mac_sta_statistics,
4393 };