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.
  20  *
  21  * You should have received a copy of the GNU General Public License
  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 "iwl-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.sw_crypto) {
 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->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 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.sw_crypto)
 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
 739         if (mvm->cfg->vht_mu_mimo_supported)
 740                 wiphy_ext_feature_set(hw->wiphy,
 741                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 742
 743         return ret;
 744 }
 745
 746 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 747                              struct ieee80211_sta *sta,
 748                              struct sk_buff *skb)
 749 {
 750         struct iwl_mvm_sta *mvmsta;
 751         bool defer = false;
 752
 753         /*
 754          * double check the IN_D0I3 flag both before and after
 755          * taking the spinlock, in order to prevent taking
 756          * the spinlock when not needed.
 757          */
 758         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 759                 return false;
 760
 761         spin_lock(&mvm->d0i3_tx_lock);
 762         /*
 763          * testing the flag again ensures the skb dequeue
 764          * loop (on d0i3 exit) hasn't run yet.
 765          */
 766         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 767                 goto out;
 768
 769         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 770         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 771             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 772                 goto out;
 773
 774         __skb_queue_tail(&mvm->d0i3_tx, skb);
 775         ieee80211_stop_queues(mvm->hw);
 776
 777         /* trigger wakeup */
 778         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 779         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 780
 781         defer = true;
 782 out:
 783         spin_unlock(&mvm->d0i3_tx_lock);
 784         return defer;
 785 }
 786
 787 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 788                            struct ieee80211_tx_control *control,
 789                            struct sk_buff *skb)
 790 {
 791         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 792         struct ieee80211_sta *sta = control->sta;
 793         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 794         struct ieee80211_hdr *hdr = (void *)skb->data;
 795
 796         if (iwl_mvm_is_radio_killed(mvm)) {
 797                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 798                 goto drop;
 799         }
 800
 801         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 802             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 803             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 804                 goto drop;
 805
 806         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 807         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 808                      ieee80211_is_mgmt(hdr->frame_control) &&
 809                      !ieee80211_is_deauth(hdr->frame_control) &&
 810                      !ieee80211_is_disassoc(hdr->frame_control) &&
 811                      !ieee80211_is_action(hdr->frame_control)))
 812                 sta = NULL;
 813
 814         if (sta) {
 815                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 816                         return;
 817                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 818                         goto drop;
 819                 return;
 820         }
 821
 822         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 823                 goto drop;
 824         return;
 825  drop:
 826         ieee80211_free_txskb(hw, skb);
 827 }
 828
 829 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 830 {
 831         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 832                 return false;
 833         return true;
 834 }
 835
 836 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 837 {
 838         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 839                 return false;
 840         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 841                 return true;
 842
 843         /* enabled by default */
 844         return true;
 845 }
 846
 847 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 848         do {                                                    \
 849                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 850                         break;                                  \
 851                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 852         } while (0)
 853
 854 static void
 855 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 856                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 857                             enum ieee80211_ampdu_mlme_action action)
 858 {
 859         struct iwl_fw_dbg_trigger_tlv *trig;
 860         struct iwl_fw_dbg_trigger_ba *ba_trig;
 861
 862         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 863                 return;
 864
 865         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 866         ba_trig = (void *)trig->data;
 867
 868         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 869                 return;
 870
 871         switch (action) {
 872         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 873                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 874                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 875
 876                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 877                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 878                                  sta->addr, tid, tid_data->ssn);
 879                 break;
 880                 }
 881         case IEEE80211_AMPDU_TX_STOP_CONT:
 882                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 883                                  "TX AGG STOP: MAC %pM tid %d\n",
 884                                  sta->addr, tid);
 885                 break;
 886         case IEEE80211_AMPDU_RX_START:
 887                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 888                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 889                                  sta->addr, tid, rx_ba_ssn);
 890                 break;
 891         case IEEE80211_AMPDU_RX_STOP:
 892                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 893                                  "RX AGG STOP: MAC %pM tid %d\n",
 894                                  sta->addr, tid);
 895                 break;
 896         default:
 897                 break;
 898         }
 899 }
 900
 901 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 902                                     struct ieee80211_vif *vif,
 903                                     struct ieee80211_ampdu_params *params)
 904 {
 905         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 906         int ret;
 907         bool tx_agg_ref = false;
 908         struct ieee80211_sta *sta = params->sta;
 909         enum ieee80211_ampdu_mlme_action action = params->action;
 910         u16 tid = params->tid;
 911         u16 *ssn = &params->ssn;
 912         u8 buf_size = params->buf_size;
 913         bool amsdu = params->amsdu;
 914         u16 timeout = params->timeout;
 915
 916         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 917                      sta->addr, tid, action);
 918
 919         if (!(mvm->nvm_data->sku_cap_11n_enable))
 920                 return -EACCES;
 921
 922         /* return from D0i3 before starting a new Tx aggregation */
 923         switch (action) {
 924         case IEEE80211_AMPDU_TX_START:
 925         case IEEE80211_AMPDU_TX_STOP_CONT:
 926         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 927         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 928         case IEEE80211_AMPDU_TX_OPERATIONAL:
 929                 /*
 930                  * for tx start, wait synchronously until D0i3 exit to
 931                  * get the correct sequence number for the tid.
 932                  * additionally, some other ampdu actions use direct
 933                  * target access, which is not handled automatically
 934                  * by the trans layer (unlike commands), so wait for
 935                  * d0i3 exit in these cases as well.
 936                  */
 937                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 938                 if (ret)
 939                         return ret;
 940
 941                 tx_agg_ref = true;
 942                 break;
 943         default:
 944                 break;
 945         }
 946
 947         mutex_lock(&mvm->mutex);
 948
 949         switch (action) {
 950         case IEEE80211_AMPDU_RX_START:
 951                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 952                         ret = -EINVAL;
 953                         break;
 954                 }
 955                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 956                                          timeout);
 957                 break;
 958         case IEEE80211_AMPDU_RX_STOP:
 959                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 960                                          timeout);
 961                 break;
 962         case IEEE80211_AMPDU_TX_START:
 963                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 964                         ret = -EINVAL;
 965                         break;
 966                 }
 967                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 968                 break;
 969         case IEEE80211_AMPDU_TX_STOP_CONT:
 970                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 971                 break;
 972         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 973         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 974                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 975                 break;
 976         case IEEE80211_AMPDU_TX_OPERATIONAL:
 977                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 978                                               buf_size, amsdu);
 979                 break;
 980         default:
 981                 WARN_ON_ONCE(1);
 982                 ret = -EINVAL;
 983                 break;
 984         }
 985
 986         if (!ret) {
 987                 u16 rx_ba_ssn = 0;
 988
 989                 if (action == IEEE80211_AMPDU_RX_START)
 990                         rx_ba_ssn = *ssn;
 991
 992                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 993                                             rx_ba_ssn, action);
 994         }
 995         mutex_unlock(&mvm->mutex);
 996
 997         /*
 998          * If the tid is marked as started, we won't use it for offloaded
 999          * traffic on the next D0i3 entry. It's safe to unref.
1000          */
1001         if (tx_agg_ref)
1002                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1003
1004         return ret;
1005 }
1006
1007 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1008                                      struct ieee80211_vif *vif)
1009 {
1010         struct iwl_mvm *mvm = data;
1011         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1012
1013         mvmvif->uploaded = false;
1014         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1015
1016         spin_lock_bh(&mvm->time_event_lock);
1017         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1018         spin_unlock_bh(&mvm->time_event_lock);
1019
1020         mvmvif->phy_ctxt = NULL;
1021         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1022 }
1023
1024 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1025 {
1026         /* clear the D3 reconfig, we only need it to avoid dumping a
1027          * firmware coredump on reconfiguration, we shouldn't do that
1028          * on D3->D0 transition
1029          */
1030         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1031                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1032                 iwl_mvm_fw_error_dump(mvm);
1033         }
1034
1035         /* cleanup all stale references (scan, roc), but keep the
1036          * ucode_down ref until reconfig is complete
1037          */
1038         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1039
1040         iwl_mvm_stop_device(mvm);
1041
1042         mvm->scan_status = 0;
1043         mvm->ps_disabled = false;
1044         mvm->calibrating = false;
1045
1046         /* just in case one was running */
1047         iwl_mvm_cleanup_roc_te(mvm);
1048         ieee80211_remain_on_channel_expired(mvm->hw);
1049
1050         /*
1051          * cleanup all interfaces, even inactive ones, as some might have
1052          * gone down during the HW restart
1053          */
1054         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1055
1056         mvm->p2p_device_vif = NULL;
1057         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1058
1059         iwl_mvm_reset_phy_ctxts(mvm);
1060         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1061         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1062         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1063         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1064         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1065         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1066
1067         ieee80211_wake_queues(mvm->hw);
1068
1069         /* clear any stale d0i3 state */
1070         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1071
1072         mvm->vif_count = 0;
1073         mvm->rx_ba_sessions = 0;
1074         mvm->fw_dbg_conf = FW_DBG_INVALID;
1075
1076         /* keep statistics ticking */
1077         iwl_mvm_accu_radio_stats(mvm);
1078 }
1079
1080 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1081 {
1082         int ret;
1083
1084         lockdep_assert_held(&mvm->mutex);
1085
1086         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1087                 /* Clean up some internal and mac80211 state on restart */
1088                 iwl_mvm_restart_cleanup(mvm);
1089         } else {
1090                 /* Hold the reference to prevent runtime suspend while
1091                  * the start procedure runs.  It's a bit confusing
1092                  * that the UCODE_DOWN reference is taken, but it just
1093                  * means "UCODE is not UP yet". ( TODO: rename this
1094                  * reference).
1095                  */
1096                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1097         }
1098         ret = iwl_mvm_up(mvm);
1099
1100         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1101                 /* Something went wrong - we need to finish some cleanup
1102                  * that normally iwl_mvm_mac_restart_complete() below
1103                  * would do.
1104                  */
1105                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1106                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1107         }
1108
1109         return ret;
1110 }
1111
1112 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1113 {
1114         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1115         int ret;
1116
1117         /* Some hw restart cleanups must not hold the mutex */
1118         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1119                 /*
1120                  * Make sure we are out of d0i3. This is needed
1121                  * to make sure the reference accounting is correct
1122                  * (and there is no stale d0i3_exit_work).
1123                  */
1124                 wait_event_timeout(mvm->d0i3_exit_waitq,
1125                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1126                                              &mvm->status),
1127                                    HZ);
1128         }
1129
1130         mutex_lock(&mvm->mutex);
1131         ret = __iwl_mvm_mac_start(mvm);
1132         mutex_unlock(&mvm->mutex);
1133
1134         return ret;
1135 }
1136
1137 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1138 {
1139         int ret;
1140
1141         mutex_lock(&mvm->mutex);
1142
1143         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1144         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1145         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1146         if (ret)
1147                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1148                         ret);
1149
1150         /* allow transport/FW low power modes */
1151         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1152
1153         /*
1154          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1155          * of packets the FW sent out, so we must reconnect.
1156          */
1157         iwl_mvm_teardown_tdls_peers(mvm);
1158
1159         mutex_unlock(&mvm->mutex);
1160 }
1161
1162 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1163 {
1164         if (iwl_mvm_is_d0i3_supported(mvm) &&
1165             iwl_mvm_enter_d0i3_on_suspend(mvm))
1166                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1167                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1168                                                         &mvm->status),
1169                                               HZ),
1170                           "D0i3 exit on resume timed out\n");
1171 }
1172
1173 static void
1174 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1175                               enum ieee80211_reconfig_type reconfig_type)
1176 {
1177         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179         switch (reconfig_type) {
1180         case IEEE80211_RECONFIG_TYPE_RESTART:
1181                 iwl_mvm_restart_complete(mvm);
1182                 break;
1183         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1184                 iwl_mvm_resume_complete(mvm);
1185                 break;
1186         }
1187 }
1188
1189 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1190 {
1191         lockdep_assert_held(&mvm->mutex);
1192
1193         /* firmware counters are obviously reset now, but we shouldn't
1194          * partially track so also clear the fw_reset_accu counters.
1195          */
1196         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1197
1198         /* async_handlers_wk is now blocked */
1199
1200         /*
1201          * The work item could be running or queued if the
1202          * ROC time event stops just as we get here.
1203          */
1204         flush_work(&mvm->roc_done_wk);
1205
1206         iwl_mvm_stop_device(mvm);
1207
1208         iwl_mvm_async_handlers_purge(mvm);
1209         /* async_handlers_list is empty and will stay empty: HW is stopped */
1210
1211         /* the fw is stopped, the aux sta is dead: clean up driver state */
1212         iwl_mvm_del_aux_sta(mvm);
1213
1214         /*
1215          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1216          * won't be called in this case).
1217          * But make sure to cleanup interfaces that have gone down before/during
1218          * HW restart was requested.
1219          */
1220         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1221                 ieee80211_iterate_interfaces(mvm->hw, 0,
1222                                              iwl_mvm_cleanup_iterator, mvm);
1223
1224         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1225          * make sure there's nothing left there and warn if any is found.
1226          */
1227         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1228                 int i;
1229
1230                 for (i = 0; i < mvm->max_scans; i++) {
1231                         if (WARN_ONCE(mvm->scan_uid_status[i],
1232                                       "UMAC scan UID %d status was not cleaned\n",
1233                                       i))
1234                                 mvm->scan_uid_status[i] = 0;
1235                 }
1236         }
1237 }
1238
1239 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1240 {
1241         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1242
1243         flush_work(&mvm->d0i3_exit_work);
1244         flush_work(&mvm->async_handlers_wk);
1245         flush_work(&mvm->add_stream_wk);
1246         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1247         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1248         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1249         iwl_mvm_free_fw_dump_desc(mvm);
1250
1251         mutex_lock(&mvm->mutex);
1252         __iwl_mvm_mac_stop(mvm);
1253         mutex_unlock(&mvm->mutex);
1254
1255         /*
1256          * The worker might have been waiting for the mutex, let it run and
1257          * discover that its list is now empty.
1258          */
1259         cancel_work_sync(&mvm->async_handlers_wk);
1260 }
1261
1262 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1263 {
1264         u16 i;
1265
1266         lockdep_assert_held(&mvm->mutex);
1267
1268         for (i = 0; i < NUM_PHY_CTX; i++)
1269                 if (!mvm->phy_ctxts[i].ref)
1270                         return &mvm->phy_ctxts[i];
1271
1272         IWL_ERR(mvm, "No available PHY context\n");
1273         return NULL;
1274 }
1275
1276 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1277                                 s16 tx_power)
1278 {
1279         struct iwl_dev_tx_power_cmd cmd = {
1280                 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1281                 .v3.mac_context_id =
1282                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1283                 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1284         };
1285         int len = sizeof(cmd);
1286
1287         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1288                 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1289
1290         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1291                 len = sizeof(cmd.v3);
1292
1293         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1294 }
1295
1296 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1297                                      struct ieee80211_vif *vif)
1298 {
1299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1301         int ret;
1302
1303         mvmvif->mvm = mvm;
1304
1305         /*
1306          * make sure D0i3 exit is completed, otherwise a target access
1307          * during tx queue configuration could be done when still in
1308          * D0i3 state.
1309          */
1310         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1311         if (ret)
1312                 return ret;
1313
1314         /*
1315          * Not much to do here. The stack will not allow interface
1316          * types or combinations that we didn't advertise, so we
1317          * don't really have to check the types.
1318          */
1319
1320         mutex_lock(&mvm->mutex);
1321
1322         /* make sure that beacon statistics don't go backwards with FW reset */
1323         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1324                 mvmvif->beacon_stats.accu_num_beacons +=
1325                         mvmvif->beacon_stats.num_beacons;
1326
1327         /* Allocate resources for the MAC context, and add it to the fw  */
1328         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1329         if (ret)
1330                 goto out_unlock;
1331
1332         /* Counting number of interfaces is needed for legacy PM */
1333         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1334                 mvm->vif_count++;
1335
1336         /*
1337          * The AP binding flow can be done only after the beacon
1338          * template is configured (which happens only in the mac80211
1339          * start_ap() flow), and adding the broadcast station can happen
1340          * only after the binding.
1341          * In addition, since modifying the MAC before adding a bcast
1342          * station is not allowed by the FW, delay the adding of MAC context to
1343          * the point where we can also add the bcast station.
1344          * In short: there's not much we can do at this point, other than
1345          * allocating resources :)
1346          */
1347         if (vif->type == NL80211_IFTYPE_AP ||
1348             vif->type == NL80211_IFTYPE_ADHOC) {
1349                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1350                 if (ret) {
1351                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1352                         goto out_release;
1353                 }
1354
1355                 if (iwl_mvm_is_dqa_supported(mvm)) {
1356                         /*
1357                          * Only queue for this station is the mcast queue,
1358                          * which shouldn't be in TFD mask anyway
1359                          */
1360                         ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1361                                                        0, vif->type);
1362                         if (ret)
1363                                 goto out_release;
1364                 }
1365
1366                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1367                 goto out_unlock;
1368         }
1369
1370         mvmvif->features |= hw->netdev_features;
1371
1372         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1373         if (ret)
1374                 goto out_release;
1375
1376         ret = iwl_mvm_power_update_mac(mvm);
1377         if (ret)
1378                 goto out_remove_mac;
1379
1380         /* beacon filtering */
1381         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1382         if (ret)
1383                 goto out_remove_mac;
1384
1385         if (!mvm->bf_allowed_vif &&
1386             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1387                 mvm->bf_allowed_vif = mvmvif;
1388                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1389                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1390         }
1391
1392         /*
1393          * P2P_DEVICE interface does not have a channel context assigned to it,
1394          * so a dedicated PHY context is allocated to it and the corresponding
1395          * MAC context is bound to it at this stage.
1396          */
1397         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1398
1399                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1400                 if (!mvmvif->phy_ctxt) {
1401                         ret = -ENOSPC;
1402                         goto out_free_bf;
1403                 }
1404
1405                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1406                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1407                 if (ret)
1408                         goto out_unref_phy;
1409
1410                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1411                 if (ret)
1412                         goto out_unbind;
1413
1414                 /* Save a pointer to p2p device vif, so it can later be used to
1415                  * update the p2p device MAC when a GO is started/stopped */
1416                 mvm->p2p_device_vif = vif;
1417         }
1418
1419         iwl_mvm_vif_dbgfs_register(mvm, vif);
1420         goto out_unlock;
1421
1422  out_unbind:
1423         iwl_mvm_binding_remove_vif(mvm, vif);
1424  out_unref_phy:
1425         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1426  out_free_bf:
1427         if (mvm->bf_allowed_vif == mvmvif) {
1428                 mvm->bf_allowed_vif = NULL;
1429                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1430                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1431         }
1432  out_remove_mac:
1433         mvmvif->phy_ctxt = NULL;
1434         iwl_mvm_mac_ctxt_remove(mvm, vif);
1435  out_release:
1436         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1437                 mvm->vif_count--;
1438
1439         iwl_mvm_mac_ctxt_release(mvm, vif);
1440  out_unlock:
1441         mutex_unlock(&mvm->mutex);
1442
1443         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1444
1445         return ret;
1446 }
1447
1448 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1449                                         struct ieee80211_vif *vif)
1450 {
1451         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1452
1453         if (tfd_msk) {
1454                 /*
1455                  * mac80211 first removes all the stations of the vif and
1456                  * then removes the vif. When it removes a station it also
1457                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1458                  * of all the stations of this vif are closed, and the queues
1459                  * of these AMPDU sessions are properly closed.
1460                  * We still need to take care of the shared queues of the vif.
1461                  * Flush them here.
1462                  */
1463                 mutex_lock(&mvm->mutex);
1464                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1465                 mutex_unlock(&mvm->mutex);
1466
1467                 /*
1468                  * There are transports that buffer a few frames in the host.
1469                  * For these, the flush above isn't enough since while we were
1470                  * flushing, the transport might have sent more frames to the
1471                  * device. To solve this, wait here until the transport is
1472                  * empty. Technically, this could have replaced the flush
1473                  * above, but flush is much faster than draining. So flush
1474                  * first, and drain to make sure we have no frames in the
1475                  * transport anymore.
1476                  * If a station still had frames on the shared queues, it is
1477                  * already marked as draining, so to complete the draining, we
1478                  * just need to wait until the transport is empty.
1479                  */
1480                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1481         }
1482
1483         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1484                 /*
1485                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1486                  * We assume here that all the packets sent to the OFFCHANNEL
1487                  * queue are sent in ROC session.
1488                  */
1489                 flush_work(&mvm->roc_done_wk);
1490         } else {
1491                 /*
1492                  * By now, all the AC queues are empty. The AGG queues are
1493                  * empty too. We already got all the Tx responses for all the
1494                  * packets in the queues. The drain work can have been
1495                  * triggered. Flush it.
1496                  */
1497                 flush_work(&mvm->sta_drained_wk);
1498         }
1499 }
1500
1501 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1502                                          struct ieee80211_vif *vif)
1503 {
1504         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1505         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1506
1507         iwl_mvm_prepare_mac_removal(mvm, vif);
1508
1509         mutex_lock(&mvm->mutex);
1510
1511         if (mvm->bf_allowed_vif == mvmvif) {
1512                 mvm->bf_allowed_vif = NULL;
1513                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1514                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1515         }
1516
1517         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1518
1519         /*
1520          * For AP/GO interface, the tear down of the resources allocated to the
1521          * interface is be handled as part of the stop_ap flow.
1522          */
1523         if (vif->type == NL80211_IFTYPE_AP ||
1524             vif->type == NL80211_IFTYPE_ADHOC) {
1525 #ifdef CONFIG_NL80211_TESTMODE
1526                 if (vif == mvm->noa_vif) {
1527                         mvm->noa_vif = NULL;
1528                         mvm->noa_duration = 0;
1529                 }
1530 #endif
1531                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1532                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1533                 goto out_release;
1534         }
1535
1536         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1537                 mvm->p2p_device_vif = NULL;
1538                 iwl_mvm_rm_bcast_sta(mvm, vif);
1539                 iwl_mvm_binding_remove_vif(mvm, vif);
1540                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1541                 mvmvif->phy_ctxt = NULL;
1542         }
1543
1544         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1545                 mvm->vif_count--;
1546
1547         iwl_mvm_power_update_mac(mvm);
1548         iwl_mvm_mac_ctxt_remove(mvm, vif);
1549
1550 out_release:
1551         iwl_mvm_mac_ctxt_release(mvm, vif);
1552         mutex_unlock(&mvm->mutex);
1553 }
1554
1555 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1556 {
1557         return 0;
1558 }
1559
1560 struct iwl_mvm_mc_iter_data {
1561         struct iwl_mvm *mvm;
1562         int port_id;
1563 };
1564
1565 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1566                                       struct ieee80211_vif *vif)
1567 {
1568         struct iwl_mvm_mc_iter_data *data = _data;
1569         struct iwl_mvm *mvm = data->mvm;
1570         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1571         int ret, len;
1572
1573         /* if we don't have free ports, mcast frames will be dropped */
1574         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1575                 return;
1576
1577         if (vif->type != NL80211_IFTYPE_STATION ||
1578             !vif->bss_conf.assoc)
1579                 return;
1580
1581         cmd->port_id = data->port_id++;
1582         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1583         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1584
1585         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1586         if (ret)
1587                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1588 }
1589
1590 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1591 {
1592         struct iwl_mvm_mc_iter_data iter_data = {
1593                 .mvm = mvm,
1594         };
1595
1596         lockdep_assert_held(&mvm->mutex);
1597
1598         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1599                 return;
1600
1601         ieee80211_iterate_active_interfaces_atomic(
1602                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1603                 iwl_mvm_mc_iface_iterator, &iter_data);
1604 }
1605
1606 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1607                                      struct netdev_hw_addr_list *mc_list)
1608 {
1609         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1610         struct iwl_mcast_filter_cmd *cmd;
1611         struct netdev_hw_addr *addr;
1612         int addr_count;
1613         bool pass_all;
1614         int len;
1615
1616         addr_count = netdev_hw_addr_list_count(mc_list);
1617         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1618                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1619         if (pass_all)
1620                 addr_count = 0;
1621
1622         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1623         cmd = kzalloc(len, GFP_ATOMIC);
1624         if (!cmd)
1625                 return 0;
1626
1627         if (pass_all) {
1628                 cmd->pass_all = 1;
1629                 return (u64)(unsigned long)cmd;
1630         }
1631
1632         netdev_hw_addr_list_for_each(addr, mc_list) {
1633                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1634                                    cmd->count, addr->addr);
1635                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1636                        addr->addr, ETH_ALEN);
1637                 cmd->count++;
1638         }
1639
1640         return (u64)(unsigned long)cmd;
1641 }
1642
1643 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1644                                      unsigned int changed_flags,
1645                                      unsigned int *total_flags,
1646                                      u64 multicast)
1647 {
1648         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1649         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1650
1651         mutex_lock(&mvm->mutex);
1652
1653         /* replace previous configuration */
1654         kfree(mvm->mcast_filter_cmd);
1655         mvm->mcast_filter_cmd = cmd;
1656
1657         if (!cmd)
1658                 goto out;
1659
1660         iwl_mvm_recalc_multicast(mvm);
1661 out:
1662         mutex_unlock(&mvm->mutex);
1663         *total_flags = 0;
1664 }
1665
1666 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1667                                         struct ieee80211_vif *vif,
1668                                         unsigned int filter_flags,
1669                                         unsigned int changed_flags)
1670 {
1671         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1672
1673         /* We support only filter for probe requests */
1674         if (!(changed_flags & FIF_PROBE_REQ))
1675                 return;
1676
1677         /* Supported only for p2p client interfaces */
1678         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1679             !vif->p2p)
1680                 return;
1681
1682         mutex_lock(&mvm->mutex);
1683         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1684         mutex_unlock(&mvm->mutex);
1685 }
1686
1687 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1688 struct iwl_bcast_iter_data {
1689         struct iwl_mvm *mvm;
1690         struct iwl_bcast_filter_cmd *cmd;
1691         u8 current_filter;
1692 };
1693
1694 static void
1695 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1696                          const struct iwl_fw_bcast_filter *in_filter,
1697                          struct iwl_fw_bcast_filter *out_filter)
1698 {
1699         struct iwl_fw_bcast_filter_attr *attr;
1700         int i;
1701
1702         memcpy(out_filter, in_filter, sizeof(*out_filter));
1703
1704         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1705                 attr = &out_filter->attrs[i];
1706
1707                 if (!attr->mask)
1708                         break;
1709
1710                 switch (attr->reserved1) {
1711                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1712                         if (vif->bss_conf.arp_addr_cnt != 1) {
1713                                 attr->mask = 0;
1714                                 continue;
1715                         }
1716
1717                         attr->val = vif->bss_conf.arp_addr_list[0];
1718                         break;
1719                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1720                         attr->val = *(__be32 *)&vif->addr[2];
1721                         break;
1722                 default:
1723                         break;
1724                 }
1725                 attr->reserved1 = 0;
1726                 out_filter->num_attrs++;
1727         }
1728 }
1729
1730 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1731                                           struct ieee80211_vif *vif)
1732 {
1733         struct iwl_bcast_iter_data *data = _data;
1734         struct iwl_mvm *mvm = data->mvm;
1735         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1736         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1737         struct iwl_fw_bcast_mac *bcast_mac;
1738         int i;
1739
1740         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1741                 return;
1742
1743         bcast_mac = &cmd->macs[mvmvif->id];
1744
1745         /*
1746          * enable filtering only for associated stations, but not for P2P
1747          * Clients
1748          */
1749         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1750             !vif->bss_conf.assoc)
1751                 return;
1752
1753         bcast_mac->default_discard = 1;
1754
1755         /* copy all configured filters */
1756         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1757                 /*
1758                  * Make sure we don't exceed our filters limit.
1759                  * if there is still a valid filter to be configured,
1760                  * be on the safe side and just allow bcast for this mac.
1761                  */
1762                 if (WARN_ON_ONCE(data->current_filter >=
1763                                  ARRAY_SIZE(cmd->filters))) {
1764                         bcast_mac->default_discard = 0;
1765                         bcast_mac->attached_filters = 0;
1766                         break;
1767                 }
1768
1769                 iwl_mvm_set_bcast_filter(vif,
1770                                          &mvm->bcast_filters[i],
1771                                          &cmd->filters[data->current_filter]);
1772
1773                 /* skip current filter if it contains no attributes */
1774                 if (!cmd->filters[data->current_filter].num_attrs)
1775                         continue;
1776
1777                 /* attach the filter to current mac */
1778                 bcast_mac->attached_filters |=
1779                                 cpu_to_le16(BIT(data->current_filter));
1780
1781                 data->current_filter++;
1782         }
1783 }
1784
1785 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1786                                     struct iwl_bcast_filter_cmd *cmd)
1787 {
1788         struct iwl_bcast_iter_data iter_data = {
1789                 .mvm = mvm,
1790                 .cmd = cmd,
1791         };
1792
1793         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1794                 return false;
1795
1796         memset(cmd, 0, sizeof(*cmd));
1797         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1798         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1799
1800 #ifdef CONFIG_IWLWIFI_DEBUGFS
1801         /* use debugfs filters/macs if override is configured */
1802         if (mvm->dbgfs_bcast_filtering.override) {
1803                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1804                        sizeof(cmd->filters));
1805                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1806                        sizeof(cmd->macs));
1807                 return true;
1808         }
1809 #endif
1810
1811         /* if no filters are configured, do nothing */
1812         if (!mvm->bcast_filters)
1813                 return false;
1814
1815         /* configure and attach these filters for each associated sta vif */
1816         ieee80211_iterate_active_interfaces(
1817                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1818                 iwl_mvm_bcast_filter_iterator, &iter_data);
1819
1820         return true;
1821 }
1822
1823 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1824 {
1825         struct iwl_bcast_filter_cmd cmd;
1826
1827         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1828                 return 0;
1829
1830         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1831                 return 0;
1832
1833         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1834                                     sizeof(cmd), &cmd);
1835 }
1836 #else
1837 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1838 {
1839         return 0;
1840 }
1841 #endif
1842
1843 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1844                                     struct ieee80211_vif *vif)
1845 {
1846         struct iwl_mu_group_mgmt_cmd cmd = {};
1847
1848         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1849                WLAN_MEMBERSHIP_LEN);
1850         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1851                WLAN_USER_POSITION_LEN);
1852
1853         return iwl_mvm_send_cmd_pdu(mvm,
1854                                     WIDE_ID(DATA_PATH_GROUP,
1855                                             UPDATE_MU_GROUPS_CMD),
1856                                     0, sizeof(cmd), &cmd);
1857 }
1858
1859 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1860                                            struct ieee80211_vif *vif)
1861 {
1862         if (vif->mu_mimo_owner) {
1863                 struct iwl_mu_group_mgmt_notif *notif = _data;
1864
1865                 /*
1866                  * MU-MIMO Group Id action frame is little endian. We treat
1867                  * the data received from firmware as if it came from the
1868                  * action frame, so no conversion is needed.
1869                  */
1870                 ieee80211_update_mu_groups(vif,
1871                                            (u8 *)&notif->membership_status,
1872                                            (u8 *)&notif->user_position);
1873         }
1874 }
1875
1876 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1877                                struct iwl_rx_cmd_buffer *rxb)
1878 {
1879         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1880         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1881
1882         ieee80211_iterate_active_interfaces_atomic(
1883                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1884                         iwl_mvm_mu_mimo_iface_iterator, notif);
1885 }
1886
1887 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1888                                              struct ieee80211_vif *vif,
1889                                              struct ieee80211_bss_conf *bss_conf,
1890                                              u32 changes)
1891 {
1892         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1893         int ret;
1894
1895         /*
1896          * Re-calculate the tsf id, as the master-slave relations depend on the
1897          * beacon interval, which was not known when the station interface was
1898          * added.
1899          */
1900         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1901                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1902
1903         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1904             mvmvif->lqm_active)
1905                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1906                                      0, 0);
1907
1908         /*
1909          * If we're not associated yet, take the (new) BSSID before associating
1910          * so the firmware knows. If we're already associated, then use the old
1911          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1912          * branch for disassociation below.
1913          */
1914         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1915                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1916
1917         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1918         if (ret)
1919                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1920
1921         /* after sending it once, adopt mac80211 data */
1922         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1923         mvmvif->associated = bss_conf->assoc;
1924
1925         if (changes & BSS_CHANGED_ASSOC) {
1926                 if (bss_conf->assoc) {
1927                         /* clear statistics to get clean beacon counter */
1928                         iwl_mvm_request_statistics(mvm, true);
1929                         memset(&mvmvif->beacon_stats, 0,
1930                                sizeof(mvmvif->beacon_stats));
1931
1932                         /* add quota for this interface */
1933                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1934                         if (ret) {
1935                                 IWL_ERR(mvm, "failed to update quotas\n");
1936                                 return;
1937                         }
1938
1939                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1940                                      &mvm->status)) {
1941                                 /*
1942                                  * If we're restarting then the firmware will
1943                                  * obviously have lost synchronisation with
1944                                  * the AP. It will attempt to synchronise by
1945                                  * itself, but we can make it more reliable by
1946                                  * scheduling a session protection time event.
1947                                  *
1948                                  * The firmware needs to receive a beacon to
1949                                  * catch up with synchronisation, use 110% of
1950                                  * the beacon interval.
1951                                  *
1952                                  * Set a large maximum delay to allow for more
1953                                  * than a single interface.
1954                                  */
1955                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1956                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1957                                                         5 * dur, false);
1958                         }
1959
1960                         iwl_mvm_sf_update(mvm, vif, false);
1961                         iwl_mvm_power_vif_assoc(mvm, vif);
1962                         if (vif->p2p) {
1963                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1964                                 iwl_mvm_update_smps(mvm, vif,
1965                                                     IWL_MVM_SMPS_REQ_PROT,
1966                                                     IEEE80211_SMPS_DYNAMIC);
1967                         }
1968                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1969                         /*
1970                          * If update fails - SF might be running in associated
1971                          * mode while disassociated - which is forbidden.
1972                          */
1973                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1974                                   "Failed to update SF upon disassociation\n");
1975
1976                         /* remove AP station now that the MAC is unassoc */
1977                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1978                         if (ret)
1979                                 IWL_ERR(mvm, "failed to remove AP station\n");
1980
1981                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1982                                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1983                         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1984                         /* remove quota for this interface */
1985                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1986                         if (ret)
1987                                 IWL_ERR(mvm, "failed to update quotas\n");
1988
1989                         if (vif->p2p)
1990                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1991
1992                         /* this will take the cleared BSSID from bss_conf */
1993                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1994                         if (ret)
1995                                 IWL_ERR(mvm,
1996                                         "failed to update MAC %pM (clear after unassoc)\n",
1997                                         vif->addr);
1998                 }
1999
2000                 /*
2001                  * The firmware tracks the MU-MIMO group on its own.
2002                  * However, on HW restart we should restore this data.
2003                  */
2004                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2005                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2006                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2007                         if (ret)
2008                                 IWL_ERR(mvm,
2009                                         "failed to update VHT MU_MIMO groups\n");
2010                 }
2011
2012                 iwl_mvm_recalc_multicast(mvm);
2013                 iwl_mvm_configure_bcast_filter(mvm);
2014
2015                 /* reset rssi values */
2016                 mvmvif->bf_data.ave_beacon_signal = 0;
2017
2018                 iwl_mvm_bt_coex_vif_change(mvm);
2019                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2020                                     IEEE80211_SMPS_AUTOMATIC);
2021                 if (fw_has_capa(&mvm->fw->ucode_capa,
2022                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2023                         iwl_mvm_config_scan(mvm);
2024         }
2025
2026         if (changes & BSS_CHANGED_BEACON_INFO) {
2027                 /*
2028                  * We received a beacon from the associated AP so
2029                  * remove the session protection.
2030                  */
2031                 iwl_mvm_remove_time_event(mvm, mvmvif,
2032                                           &mvmvif->time_event_data);
2033
2034                 iwl_mvm_sf_update(mvm, vif, false);
2035                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2036         }
2037
2038         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2039                        /*
2040                         * Send power command on every beacon change,
2041                         * because we may have not enabled beacon abort yet.
2042                         */
2043                        BSS_CHANGED_BEACON_INFO)) {
2044                 ret = iwl_mvm_power_update_mac(mvm);
2045                 if (ret)
2046                         IWL_ERR(mvm, "failed to update power mode\n");
2047         }
2048
2049         if (changes & BSS_CHANGED_TXPOWER) {
2050                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2051                                 bss_conf->txpower);
2052                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2053         }
2054
2055         if (changes & BSS_CHANGED_CQM) {
2056                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2057                 /* reset cqm events tracking */
2058                 mvmvif->bf_data.last_cqm_event = 0;
2059                 if (mvmvif->bf_data.bf_enabled) {
2060                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2061                         if (ret)
2062                                 IWL_ERR(mvm,
2063                                         "failed to update CQM thresholds\n");
2064                 }
2065         }
2066
2067         if (changes & BSS_CHANGED_ARP_FILTER) {
2068                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2069                 iwl_mvm_configure_bcast_filter(mvm);
2070         }
2071 }
2072
2073 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2074                                  struct ieee80211_vif *vif)
2075 {
2076         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2077         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2078         int ret;
2079
2080         /*
2081          * iwl_mvm_mac_ctxt_add() might read directly from the device
2082          * (the system time), so make sure it is available.
2083          */
2084         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2085         if (ret)
2086                 return ret;
2087
2088         mutex_lock(&mvm->mutex);
2089
2090         /* Send the beacon template */
2091         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2092         if (ret)
2093                 goto out_unlock;
2094
2095         /*
2096          * Re-calculate the tsf id, as the master-slave relations depend on the
2097          * beacon interval, which was not known when the AP interface was added.
2098          */
2099         if (vif->type == NL80211_IFTYPE_AP)
2100                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2101
2102         mvmvif->ap_assoc_sta_count = 0;
2103
2104         /* Add the mac context */
2105         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2106         if (ret)
2107                 goto out_unlock;
2108
2109         /* Perform the binding */
2110         ret = iwl_mvm_binding_add_vif(mvm, vif);
2111         if (ret)
2112                 goto out_remove;
2113
2114         /* Send the bcast station. At this stage the TBTT and DTIM time events
2115          * are added and applied to the scheduler */
2116         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2117         if (ret)
2118                 goto out_unbind;
2119
2120         ret = iwl_mvm_add_mcast_sta(mvm, vif);
2121         if (ret)
2122                 goto out_rm_bcast;
2123
2124         /* must be set before quota calculations */
2125         mvmvif->ap_ibss_active = true;
2126
2127         /* power updated needs to be done before quotas */
2128         iwl_mvm_power_update_mac(mvm);
2129
2130         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2131         if (ret)
2132                 goto out_quota_failed;
2133
2134         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2135         if (vif->p2p && mvm->p2p_device_vif)
2136                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2137
2138         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2139
2140         iwl_mvm_bt_coex_vif_change(mvm);
2141
2142         /* we don't support TDLS during DCM */
2143         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2144                 iwl_mvm_teardown_tdls_peers(mvm);
2145
2146         goto out_unlock;
2147
2148 out_quota_failed:
2149         iwl_mvm_power_update_mac(mvm);
2150         mvmvif->ap_ibss_active = false;
2151         iwl_mvm_rm_mcast_sta(mvm, vif);
2152 out_rm_bcast:
2153         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2154 out_unbind:
2155         iwl_mvm_binding_remove_vif(mvm, vif);
2156 out_remove:
2157         iwl_mvm_mac_ctxt_remove(mvm, vif);
2158 out_unlock:
2159         mutex_unlock(&mvm->mutex);
2160         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2161         return ret;
2162 }
2163
2164 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2165                                  struct ieee80211_vif *vif)
2166 {
2167         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2168         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2169
2170         iwl_mvm_prepare_mac_removal(mvm, vif);
2171
2172         mutex_lock(&mvm->mutex);
2173
2174         /* Handle AP stop while in CSA */
2175         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2176                 iwl_mvm_remove_time_event(mvm, mvmvif,
2177                                           &mvmvif->time_event_data);
2178                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2179                 mvmvif->csa_countdown = false;
2180         }
2181
2182         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2183                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2184                 mvm->csa_tx_block_bcn_timeout = 0;
2185         }
2186
2187         mvmvif->ap_ibss_active = false;
2188         mvm->ap_last_beacon_gp2 = 0;
2189
2190         iwl_mvm_bt_coex_vif_change(mvm);
2191
2192         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2193
2194         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2195         if (vif->p2p && mvm->p2p_device_vif)
2196                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2197
2198         iwl_mvm_update_quotas(mvm, false, NULL);
2199         iwl_mvm_rm_mcast_sta(mvm, vif);
2200         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2201         iwl_mvm_binding_remove_vif(mvm, vif);
2202
2203         iwl_mvm_power_update_mac(mvm);
2204
2205         iwl_mvm_mac_ctxt_remove(mvm, vif);
2206
2207         mutex_unlock(&mvm->mutex);
2208 }
2209
2210 static void
2211 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2212                                  struct ieee80211_vif *vif,
2213                                  struct ieee80211_bss_conf *bss_conf,
2214                                  u32 changes)
2215 {
2216         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2217
2218         /* Changes will be applied when the AP/IBSS is started */
2219         if (!mvmvif->ap_ibss_active)
2220                 return;
2221
2222         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2223                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2224             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2225                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2226
2227         /* Need to send a new beacon template to the FW */
2228         if (changes & BSS_CHANGED_BEACON &&
2229             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2230                 IWL_WARN(mvm, "Failed updating beacon data\n");
2231
2232         if (changes & BSS_CHANGED_TXPOWER) {
2233                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2234                                 bss_conf->txpower);
2235                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2236         }
2237 }
2238
2239 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2240                                      struct ieee80211_vif *vif,
2241                                      struct ieee80211_bss_conf *bss_conf,
2242                                      u32 changes)
2243 {
2244         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2245
2246         /*
2247          * iwl_mvm_bss_info_changed_station() might call
2248          * iwl_mvm_protect_session(), which reads directly from
2249          * the device (the system time), so make sure it is available.
2250          */
2251         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2252                 return;
2253
2254         mutex_lock(&mvm->mutex);
2255
2256         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2257                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2258
2259         switch (vif->type) {
2260         case NL80211_IFTYPE_STATION:
2261                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2262                 break;
2263         case NL80211_IFTYPE_AP:
2264         case NL80211_IFTYPE_ADHOC:
2265                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2266                 break;
2267         case NL80211_IFTYPE_MONITOR:
2268                 if (changes & BSS_CHANGED_MU_GROUPS)
2269                         iwl_mvm_update_mu_groups(mvm, vif);
2270                 break;
2271         default:
2272                 /* shouldn't happen */
2273                 WARN_ON_ONCE(1);
2274         }
2275
2276         mutex_unlock(&mvm->mutex);
2277         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2278 }
2279
2280 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2281                                struct ieee80211_vif *vif,
2282                                struct ieee80211_scan_request *hw_req)
2283 {
2284         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2285         int ret;
2286
2287         if (hw_req->req.n_channels == 0 ||
2288             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2289                 return -EINVAL;
2290
2291         mutex_lock(&mvm->mutex);
2292         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2293         mutex_unlock(&mvm->mutex);
2294
2295         return ret;
2296 }
2297
2298 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2299                                        struct ieee80211_vif *vif)
2300 {
2301         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2302
2303         mutex_lock(&mvm->mutex);
2304
2305         /* Due to a race condition, it's possible that mac80211 asks
2306          * us to stop a hw_scan when it's already stopped.  This can
2307          * happen, for instance, if we stopped the scan ourselves,
2308          * called ieee80211_scan_completed() and the userspace called
2309          * cancel scan scan before ieee80211_scan_work() could run.
2310          * To handle that, simply return if the scan is not running.
2311         */
2312         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2313                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2314
2315         mutex_unlock(&mvm->mutex);
2316 }
2317
2318 static void
2319 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2320                                   struct ieee80211_sta *sta, u16 tids,
2321                                   int num_frames,
2322                                   enum ieee80211_frame_release_type reason,
2323                                   bool more_data)
2324 {
2325         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2326
2327         /* Called when we need to transmit (a) frame(s) from mac80211 */
2328
2329         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2330                                           tids, more_data, false);
2331 }
2332
2333 static void
2334 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2335                                     struct ieee80211_sta *sta, u16 tids,
2336                                     int num_frames,
2337                                     enum ieee80211_frame_release_type reason,
2338                                     bool more_data)
2339 {
2340         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2341
2342         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2343
2344         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2345                                           tids, more_data, true);
2346 }
2347
2348 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2349                                      enum sta_notify_cmd cmd,
2350                                      struct ieee80211_sta *sta)
2351 {
2352         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2354         unsigned long txqs = 0, tids = 0;
2355         int tid;
2356
2357         spin_lock_bh(&mvmsta->lock);
2358         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2359                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2360
2361                 if (!iwl_mvm_is_dqa_supported(mvm) &&
2362                     tid_data->state != IWL_AGG_ON &&
2363                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2364                         continue;
2365
2366                 if (tid_data->txq_id == IEEE80211_INVAL_HW_QUEUE)
2367                         continue;
2368
2369                 __set_bit(tid_data->txq_id, &txqs);
2370
2371                 if (iwl_mvm_tid_queued(tid_data) == 0)
2372                         continue;
2373
2374                 __set_bit(tid, &tids);
2375         }
2376
2377         switch (cmd) {
2378         case STA_NOTIFY_SLEEP:
2379                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2380                         ieee80211_sta_block_awake(hw, sta, true);
2381
2382                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2383                         ieee80211_sta_set_buffered(sta, tid, true);
2384
2385                 if (txqs)
2386                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2387                 /*
2388                  * The fw updates the STA to be asleep. Tx packets on the Tx
2389                  * queues to this station will not be transmitted. The fw will
2390                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2391                  */
2392                 break;
2393         case STA_NOTIFY_AWAKE:
2394                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2395                         break;
2396
2397                 if (txqs)
2398                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2399                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2400                 break;
2401         default:
2402                 break;
2403         }
2404         spin_unlock_bh(&mvmsta->lock);
2405 }
2406
2407 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2408                                    struct ieee80211_vif *vif,
2409                                    enum sta_notify_cmd cmd,
2410                                    struct ieee80211_sta *sta)
2411 {
2412         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2413 }
2414
2415 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2416 {
2417         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2418         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2419         struct ieee80211_sta *sta;
2420         struct iwl_mvm_sta *mvmsta;
2421         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2422
2423         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2424                 return;
2425
2426         rcu_read_lock();
2427         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2428         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2429                 rcu_read_unlock();
2430                 return;
2431         }
2432
2433         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2434
2435         if (!mvmsta->vif ||
2436             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2437                 rcu_read_unlock();
2438                 return;
2439         }
2440
2441         if (mvmsta->sleeping != sleeping) {
2442                 mvmsta->sleeping = sleeping;
2443                 __iwl_mvm_mac_sta_notify(mvm->hw,
2444                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2445                         sta);
2446                 ieee80211_sta_ps_transition(sta, sleeping);
2447         }
2448
2449         if (sleeping) {
2450                 switch (notif->type) {
2451                 case IWL_MVM_PM_EVENT_AWAKE:
2452                 case IWL_MVM_PM_EVENT_ASLEEP:
2453                         break;
2454                 case IWL_MVM_PM_EVENT_UAPSD:
2455                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2456                         break;
2457                 case IWL_MVM_PM_EVENT_PS_POLL:
2458                         ieee80211_sta_pspoll(sta);
2459                         break;
2460                 default:
2461                         break;
2462                 }
2463         }
2464
2465         rcu_read_unlock();
2466 }
2467
2468 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2469                                        struct ieee80211_vif *vif,
2470                                        struct ieee80211_sta *sta)
2471 {
2472         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2473         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2474
2475         /*
2476          * This is called before mac80211 does RCU synchronisation,
2477          * so here we already invalidate our internal RCU-protected
2478          * station pointer. The rest of the code will thus no longer
2479          * be able to find the station this way, and we don't rely
2480          * on further RCU synchronisation after the sta_state()
2481          * callback deleted the station.
2482          */
2483         mutex_lock(&mvm->mutex);
2484         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2485                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2486                                    ERR_PTR(-ENOENT));
2487
2488         mutex_unlock(&mvm->mutex);
2489 }
2490
2491 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2492                                 const u8 *bssid)
2493 {
2494         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2495                 return;
2496
2497         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2498                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2499                 return;
2500         }
2501
2502         if (!vif->p2p &&
2503             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2504                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2505                 return;
2506         }
2507
2508         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2509 }
2510
2511 static void
2512 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2513                            struct ieee80211_vif *vif, u8 *peer_addr,
2514                            enum nl80211_tdls_operation action)
2515 {
2516         struct iwl_fw_dbg_trigger_tlv *trig;
2517         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2518
2519         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2520                 return;
2521
2522         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2523         tdls_trig = (void *)trig->data;
2524         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2525                 return;
2526
2527         if (!(tdls_trig->action_bitmap & BIT(action)))
2528                 return;
2529
2530         if (tdls_trig->peer_mode &&
2531             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2532                 return;
2533
2534         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2535                                     "TDLS event occurred, peer %pM, action %d",
2536                                     peer_addr, action);
2537 }
2538
2539 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2540                                              struct iwl_mvm_sta *mvm_sta)
2541 {
2542         struct iwl_mvm_tid_data *tid_data;
2543         struct sk_buff *skb;
2544         int i;
2545
2546         spin_lock_bh(&mvm_sta->lock);
2547         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2548                 tid_data = &mvm_sta->tid_data[i];
2549                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2550                         ieee80211_free_txskb(mvm->hw, skb);
2551         }
2552         spin_unlock_bh(&mvm_sta->lock);
2553 }
2554
2555 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2556                                  struct ieee80211_vif *vif,
2557                                  struct ieee80211_sta *sta,
2558                                  enum ieee80211_sta_state old_state,
2559                                  enum ieee80211_sta_state new_state)
2560 {
2561         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2563         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2564         int ret;
2565
2566         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2567                            sta->addr, old_state, new_state);
2568
2569         /* this would be a mac80211 bug ... but don't crash */
2570         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2571                 return -EINVAL;
2572
2573         /* if a STA is being removed, reuse its ID */
2574         flush_work(&mvm->sta_drained_wk);
2575
2576         /*
2577          * If we are in a STA removal flow and in DQA mode:
2578          *
2579          * This is after the sync_rcu part, so the queues have already been
2580          * flushed. No more TXs on their way in mac80211's path, and no more in
2581          * the queues.
2582          * Also, we won't be getting any new TX frames for this station.
2583          * What we might have are deferred TX frames that need to be taken care
2584          * of.
2585          *
2586          * Drop any still-queued deferred-frame before removing the STA, and
2587          * make sure the worker is no longer handling frames for this STA.
2588          */
2589         if (old_state == IEEE80211_STA_NONE &&
2590             new_state == IEEE80211_STA_NOTEXIST &&
2591             iwl_mvm_is_dqa_supported(mvm)) {
2592                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2593                 flush_work(&mvm->add_stream_wk);
2594
2595                 /*
2596                  * No need to make sure deferred TX indication is off since the
2597                  * worker will already remove it if it was on
2598                  */
2599         }
2600
2601         mutex_lock(&mvm->mutex);
2602         /* track whether or not the station is associated */
2603         mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2604
2605         if (old_state == IEEE80211_STA_NOTEXIST &&
2606             new_state == IEEE80211_STA_NONE) {
2607                 /*
2608                  * Firmware bug - it'll crash if the beacon interval is less
2609                  * than 16. We can't avoid connecting at all, so refuse the
2610                  * station state change, this will cause mac80211 to abandon
2611                  * attempts to connect to this AP, and eventually wpa_s will
2612                  * blacklist the AP...
2613                  */
2614                 if (vif->type == NL80211_IFTYPE_STATION &&
2615                     vif->bss_conf.beacon_int < 16) {
2616                         IWL_ERR(mvm,
2617                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2618                                 sta->addr, vif->bss_conf.beacon_int);
2619                         ret = -EINVAL;
2620                         goto out_unlock;
2621                 }
2622
2623                 if (sta->tdls &&
2624                     (vif->p2p ||
2625                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2626                                                 IWL_MVM_TDLS_STA_COUNT ||
2627                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2628                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2629                         ret = -EBUSY;
2630                         goto out_unlock;
2631                 }
2632
2633                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2634                 if (sta->tdls && ret == 0) {
2635                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2636                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2637                                                    NL80211_TDLS_SETUP);
2638                 }
2639         } else if (old_state == IEEE80211_STA_NONE &&
2640                    new_state == IEEE80211_STA_AUTH) {
2641                 /*
2642                  * EBS may be disabled due to previous failures reported by FW.
2643                  * Reset EBS status here assuming environment has been changed.
2644                  */
2645                 mvm->last_ebs_successful = true;
2646                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2647                 ret = 0;
2648         } else if (old_state == IEEE80211_STA_AUTH &&
2649                    new_state == IEEE80211_STA_ASSOC) {
2650                 if (vif->type == NL80211_IFTYPE_AP) {
2651                         mvmvif->ap_assoc_sta_count++;
2652                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2653                 }
2654
2655                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2656                                      true);
2657                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2658         } else if (old_state == IEEE80211_STA_ASSOC &&
2659                    new_state == IEEE80211_STA_AUTHORIZED) {
2660
2661                 /* we don't support TDLS during DCM */
2662                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2663                         iwl_mvm_teardown_tdls_peers(mvm);
2664
2665                 if (sta->tdls)
2666                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2667                                                    NL80211_TDLS_ENABLE_LINK);
2668
2669                 /* enable beacon filtering */
2670                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2671                 ret = 0;
2672         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2673                    new_state == IEEE80211_STA_ASSOC) {
2674                 /* disable beacon filtering */
2675                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2676                 ret = 0;
2677         } else if (old_state == IEEE80211_STA_ASSOC &&
2678                    new_state == IEEE80211_STA_AUTH) {
2679                 if (vif->type == NL80211_IFTYPE_AP) {
2680                         mvmvif->ap_assoc_sta_count--;
2681                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2682                 }
2683                 ret = 0;
2684         } else if (old_state == IEEE80211_STA_AUTH &&
2685                    new_state == IEEE80211_STA_NONE) {
2686                 ret = 0;
2687         } else if (old_state == IEEE80211_STA_NONE &&
2688                    new_state == IEEE80211_STA_NOTEXIST) {
2689                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2690                 if (sta->tdls) {
2691                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2692                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2693                                                    NL80211_TDLS_DISABLE_LINK);
2694                 }
2695         } else {
2696                 ret = -EIO;
2697         }
2698  out_unlock:
2699         mutex_unlock(&mvm->mutex);
2700
2701         if (sta->tdls && ret == 0) {
2702                 if (old_state == IEEE80211_STA_NOTEXIST &&
2703                     new_state == IEEE80211_STA_NONE)
2704                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2705                 else if (old_state == IEEE80211_STA_NONE &&
2706                          new_state == IEEE80211_STA_NOTEXIST)
2707                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2708         }
2709
2710         return ret;
2711 }
2712
2713 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2714 {
2715         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2716
2717         mvm->rts_threshold = value;
2718
2719         return 0;
2720 }
2721
2722 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2723                                   struct ieee80211_vif *vif,
2724                                   struct ieee80211_sta *sta, u32 changed)
2725 {
2726         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2727
2728         if (vif->type == NL80211_IFTYPE_STATION &&
2729             changed & IEEE80211_RC_NSS_CHANGED)
2730                 iwl_mvm_sf_update(mvm, vif, false);
2731 }
2732
2733 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2734                                struct ieee80211_vif *vif, u16 ac,
2735                                const struct ieee80211_tx_queue_params *params)
2736 {
2737         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2738         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2739
2740         mvmvif->queue_params[ac] = *params;
2741
2742         /*
2743          * No need to update right away, we'll get BSS_CHANGED_QOS
2744          * The exception is P2P_DEVICE interface which needs immediate update.
2745          */
2746         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2747                 int ret;
2748
2749                 mutex_lock(&mvm->mutex);
2750                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2751                 mutex_unlock(&mvm->mutex);
2752                 return ret;
2753         }
2754         return 0;
2755 }
2756
2757 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2758                                       struct ieee80211_vif *vif)
2759 {
2760         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2761         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2762         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2763
2764         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2765                 return;
2766
2767         /*
2768          * iwl_mvm_protect_session() reads directly from the device
2769          * (the system time), so make sure it is available.
2770          */
2771         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2772                 return;
2773
2774         mutex_lock(&mvm->mutex);
2775         /* Try really hard to protect the session and hear a beacon */
2776         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2777         mutex_unlock(&mvm->mutex);
2778
2779         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2780 }
2781
2782 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2783                                         struct ieee80211_vif *vif,
2784                                         struct cfg80211_sched_scan_request *req,
2785                                         struct ieee80211_scan_ies *ies)
2786 {
2787         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2788
2789         int ret;
2790
2791         mutex_lock(&mvm->mutex);
2792
2793         if (!vif->bss_conf.idle) {
2794                 ret = -EBUSY;
2795                 goto out;
2796         }
2797
2798         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2799
2800 out:
2801         mutex_unlock(&mvm->mutex);
2802         return ret;
2803 }
2804
2805 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2806                                        struct ieee80211_vif *vif)
2807 {
2808         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2809         int ret;
2810
2811         mutex_lock(&mvm->mutex);
2812
2813         /* Due to a race condition, it's possible that mac80211 asks
2814          * us to stop a sched_scan when it's already stopped.  This
2815          * can happen, for instance, if we stopped the scan ourselves,
2816          * called ieee80211_sched_scan_stopped() and the userspace called
2817          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2818          * could run.  To handle this, simply return if the scan is
2819          * not running.
2820         */
2821         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2822                 mutex_unlock(&mvm->mutex);
2823                 return 0;
2824         }
2825
2826         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2827         mutex_unlock(&mvm->mutex);
2828         iwl_mvm_wait_for_async_handlers(mvm);
2829
2830         return ret;
2831 }
2832
2833 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2834                                enum set_key_cmd cmd,
2835                                struct ieee80211_vif *vif,
2836                                struct ieee80211_sta *sta,
2837                                struct ieee80211_key_conf *key)
2838 {
2839         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2840         struct iwl_mvm_sta *mvmsta;
2841         struct iwl_mvm_key_pn *ptk_pn;
2842         int keyidx = key->keyidx;
2843         int ret;
2844         u8 key_offset;
2845
2846         if (iwlwifi_mod_params.sw_crypto) {
2847                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2848                 return -EOPNOTSUPP;
2849         }
2850
2851         switch (key->cipher) {
2852         case WLAN_CIPHER_SUITE_TKIP:
2853                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2854                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2855                 break;
2856         case WLAN_CIPHER_SUITE_CCMP:
2857         case WLAN_CIPHER_SUITE_GCMP:
2858         case WLAN_CIPHER_SUITE_GCMP_256:
2859                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2860                 break;
2861         case WLAN_CIPHER_SUITE_AES_CMAC:
2862         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2863         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2864                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2865                 break;
2866         case WLAN_CIPHER_SUITE_WEP40:
2867         case WLAN_CIPHER_SUITE_WEP104:
2868                 /* For non-client mode, only use WEP keys for TX as we probably
2869                  * don't have a station yet anyway and would then have to keep
2870                  * track of the keys, linking them to each of the clients/peers
2871                  * as they appear. For now, don't do that, for performance WEP
2872                  * offload doesn't really matter much, but we need it for some
2873                  * other offload features in client mode.
2874                  */
2875                 if (vif->type != NL80211_IFTYPE_STATION)
2876                         return 0;
2877                 break;
2878         default:
2879                 /* currently FW supports only one optional cipher scheme */
2880                 if (hw->n_cipher_schemes &&
2881                     hw->cipher_schemes->cipher == key->cipher)
2882                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2883                 else
2884                         return -EOPNOTSUPP;
2885         }
2886
2887         mutex_lock(&mvm->mutex);
2888
2889         switch (cmd) {
2890         case SET_KEY:
2891                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2892                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2893                         /*
2894                          * GTK on AP interface is a TX-only key, return 0;
2895                          * on IBSS they're per-station and because we're lazy
2896                          * we don't support them for RX, so do the same.
2897                          * CMAC/GMAC in AP/IBSS modes must be done in software.
2898                          */
2899                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2900                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2901                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2902                                 ret = -EOPNOTSUPP;
2903                         else
2904                                 ret = 0;
2905                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2906                         break;
2907                 }
2908
2909                 /* During FW restart, in order to restore the state as it was,
2910                  * don't try to reprogram keys we previously failed for.
2911                  */
2912                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2913                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2914                         IWL_DEBUG_MAC80211(mvm,
2915                                            "skip invalid idx key programming during restart\n");
2916                         ret = 0;
2917                         break;
2918                 }
2919
2920                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2921                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2922                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2923                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2924                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2925                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2926                         struct ieee80211_key_seq seq;
2927                         int tid, q;
2928
2929                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2930                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2931                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2932                                          mvm->trans->num_rx_queues *
2933                                                 sizeof(ptk_pn->q[0]),
2934                                          GFP_KERNEL);
2935                         if (!ptk_pn) {
2936                                 ret = -ENOMEM;
2937                                 break;
2938                         }
2939
2940                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2941                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2942                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2943                                         memcpy(ptk_pn->q[q].pn[tid],
2944                                                seq.ccmp.pn,
2945                                                IEEE80211_CCMP_PN_LEN);
2946                         }
2947
2948                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2949                 }
2950
2951                 /* in HW restart reuse the index, otherwise request a new one */
2952                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2953                         key_offset = key->hw_key_idx;
2954                 else
2955                         key_offset = STA_KEY_IDX_INVALID;
2956
2957                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2958                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2959                 if (ret) {
2960                         IWL_WARN(mvm, "set key failed\n");
2961                         /*
2962                          * can't add key for RX, but we don't need it
2963                          * in the device for TX so still return 0
2964                          */
2965                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2966                         ret = 0;
2967                 }
2968
2969                 break;
2970         case DISABLE_KEY:
2971                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2972                         ret = 0;
2973                         break;
2974                 }
2975
2976                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2977                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2978                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2979                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2980                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2981                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2982                         ptk_pn = rcu_dereference_protected(
2983                                                 mvmsta->ptk_pn[keyidx],
2984                                                 lockdep_is_held(&mvm->mutex));
2985                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2986                         if (ptk_pn)
2987                                 kfree_rcu(ptk_pn, rcu_head);
2988                 }
2989
2990                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2991                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2992                 break;
2993         default:
2994                 ret = -EINVAL;
2995         }
2996
2997         mutex_unlock(&mvm->mutex);
2998         return ret;
2999 }
3000
3001 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3002                                         struct ieee80211_vif *vif,
3003                                         struct ieee80211_key_conf *keyconf,
3004                                         struct ieee80211_sta *sta,
3005                                         u32 iv32, u16 *phase1key)
3006 {
3007         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3008
3009         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3010                 return;
3011
3012         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3013 }
3014
3015
3016 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3017                                struct iwl_rx_packet *pkt, void *data)
3018 {
3019         struct iwl_mvm *mvm =
3020                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3021         struct iwl_hs20_roc_res *resp;
3022         int resp_len = iwl_rx_packet_payload_len(pkt);
3023         struct iwl_mvm_time_event_data *te_data = data;
3024
3025         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3026                 return true;
3027
3028         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3029                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3030                 return true;
3031         }
3032
3033         resp = (void *)pkt->data;
3034
3035         IWL_DEBUG_TE(mvm,
3036                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3037                      resp->status, resp->event_unique_id);
3038
3039         te_data->uid = le32_to_cpu(resp->event_unique_id);
3040         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3041                      te_data->uid);
3042
3043         spin_lock_bh(&mvm->time_event_lock);
3044         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3045         spin_unlock_bh(&mvm->time_event_lock);
3046
3047         return true;
3048 }
3049
3050 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3051 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3052 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3053 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3054 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3055 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3056                                     struct ieee80211_channel *channel,
3057                                     struct ieee80211_vif *vif,
3058                                     int duration)
3059 {
3060         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3061         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3062         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3063         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3064         struct iwl_notification_wait wait_time_event;
3065         u32 dtim_interval = vif->bss_conf.dtim_period *
3066                 vif->bss_conf.beacon_int;
3067         u32 req_dur, delay;
3068         struct iwl_hs20_roc_req aux_roc_req = {
3069                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3070                 .id_and_color =
3071                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3072                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3073                 /* Set the channel info data */
3074                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3075                         PHY_BAND_24 : PHY_BAND_5,
3076                 .channel_info.channel = channel->hw_value,
3077                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3078                 /* Set the time and duration */
3079                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3080          };
3081
3082         delay = AUX_ROC_MIN_DELAY;
3083         req_dur = MSEC_TO_TU(duration);
3084
3085         /*
3086          * If we are associated we want the delay time to be at least one
3087          * dtim interval so that the FW can wait until after the DTIM and
3088          * then start the time event, this will potentially allow us to
3089          * remain off-channel for the max duration.
3090          * Since we want to use almost a whole dtim interval we would also
3091          * like the delay to be for 2-3 dtim intervals, in case there are
3092          * other time events with higher priority.
3093          */
3094         if (vif->bss_conf.assoc) {
3095                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3096                 /* We cannot remain off-channel longer than the DTIM interval */
3097                 if (dtim_interval <= req_dur) {
3098                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3099                         if (req_dur <= AUX_ROC_MIN_DURATION)
3100                                 req_dur = dtim_interval -
3101                                         AUX_ROC_MIN_SAFETY_BUFFER;
3102                 }
3103         }
3104
3105         aux_roc_req.duration = cpu_to_le32(req_dur);
3106         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3107
3108         IWL_DEBUG_TE(mvm,
3109                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3110                      channel->hw_value, req_dur, duration, delay,
3111                      dtim_interval);
3112         /* Set the node address */
3113         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3114
3115         lockdep_assert_held(&mvm->mutex);
3116
3117         spin_lock_bh(&mvm->time_event_lock);
3118
3119         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3120                 spin_unlock_bh(&mvm->time_event_lock);
3121                 return -EIO;
3122         }
3123
3124         te_data->vif = vif;
3125         te_data->duration = duration;
3126         te_data->id = HOT_SPOT_CMD;
3127
3128         spin_unlock_bh(&mvm->time_event_lock);
3129
3130         /*
3131          * Use a notification wait, which really just processes the
3132          * command response and doesn't wait for anything, in order
3133          * to be able to process the response and get the UID inside
3134          * the RX path. Using CMD_WANT_SKB doesn't work because it
3135          * stores the buffer and then wakes up this thread, by which
3136          * time another notification (that the time event started)
3137          * might already be processed unsuccessfully.
3138          */
3139         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3140                                    time_event_response,
3141                                    ARRAY_SIZE(time_event_response),
3142                                    iwl_mvm_rx_aux_roc, te_data);
3143
3144         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3145                                    &aux_roc_req);
3146
3147         if (res) {
3148                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3149                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3150                 goto out_clear_te;
3151         }
3152
3153         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3154         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3155         /* should never fail */
3156         WARN_ON_ONCE(res);
3157
3158         if (res) {
3159  out_clear_te:
3160                 spin_lock_bh(&mvm->time_event_lock);
3161                 iwl_mvm_te_clear_data(mvm, te_data);
3162                 spin_unlock_bh(&mvm->time_event_lock);
3163         }
3164
3165         return res;
3166 }
3167
3168 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3169                        struct ieee80211_vif *vif,
3170                        struct ieee80211_channel *channel,
3171                        int duration,
3172                        enum ieee80211_roc_type type)
3173 {
3174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3175         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3176         struct cfg80211_chan_def chandef;
3177         struct iwl_mvm_phy_ctxt *phy_ctxt;
3178         int ret, i;
3179
3180         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3181                            duration, type);
3182
3183         flush_work(&mvm->roc_done_wk);
3184
3185         mutex_lock(&mvm->mutex);
3186
3187         switch (vif->type) {
3188         case NL80211_IFTYPE_STATION:
3189                 if (fw_has_capa(&mvm->fw->ucode_capa,
3190                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3191                         /* Use aux roc framework (HS20) */
3192                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3193                                                        vif, duration);
3194                         goto out_unlock;
3195                 }
3196                 IWL_ERR(mvm, "hotspot not supported\n");
3197                 ret = -EINVAL;
3198                 goto out_unlock;
3199         case NL80211_IFTYPE_P2P_DEVICE:
3200                 /* handle below */
3201                 break;
3202         default:
3203                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3204                 ret = -EINVAL;
3205                 goto out_unlock;
3206         }
3207
3208         for (i = 0; i < NUM_PHY_CTX; i++) {
3209                 phy_ctxt = &mvm->phy_ctxts[i];
3210                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3211                         continue;
3212
3213                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3214                         /*
3215                          * Unbind the P2P_DEVICE from the current PHY context,
3216                          * and if the PHY context is not used remove it.
3217                          */
3218                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3219                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3220                                 goto out_unlock;
3221
3222                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3223
3224                         /* Bind the P2P_DEVICE to the current PHY Context */
3225                         mvmvif->phy_ctxt = phy_ctxt;
3226
3227                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3228                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3229                                 goto out_unlock;
3230
3231                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3232                         goto schedule_time_event;
3233                 }
3234         }
3235
3236         /* Need to update the PHY context only if the ROC channel changed */
3237         if (channel == mvmvif->phy_ctxt->channel)
3238                 goto schedule_time_event;
3239
3240         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3241
3242         /*
3243          * Change the PHY context configuration as it is currently referenced
3244          * only by the P2P Device MAC
3245          */
3246         if (mvmvif->phy_ctxt->ref == 1) {
3247                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3248                                                &chandef, 1, 1);
3249                 if (ret)
3250                         goto out_unlock;
3251         } else {
3252                 /*
3253                  * The PHY context is shared with other MACs. Need to remove the
3254                  * P2P Device from the binding, allocate an new PHY context and
3255                  * create a new binding
3256                  */
3257                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3258                 if (!phy_ctxt) {
3259                         ret = -ENOSPC;
3260                         goto out_unlock;
3261                 }
3262
3263                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3264                                                1, 1);
3265                 if (ret) {
3266                         IWL_ERR(mvm, "Failed to change PHY context\n");
3267                         goto out_unlock;
3268                 }
3269
3270                 /* Unbind the P2P_DEVICE from the current PHY context */
3271                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3272                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3273                         goto out_unlock;
3274
3275                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3276
3277                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3278                 mvmvif->phy_ctxt = phy_ctxt;
3279
3280                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3281                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3282                         goto out_unlock;
3283
3284                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3285         }
3286
3287 schedule_time_event:
3288         /* Schedule the time events */
3289         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3290
3291 out_unlock:
3292         mutex_unlock(&mvm->mutex);
3293         IWL_DEBUG_MAC80211(mvm, "leave\n");
3294         return ret;
3295 }
3296
3297 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3298 {
3299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3300
3301         IWL_DEBUG_MAC80211(mvm, "enter\n");
3302
3303         mutex_lock(&mvm->mutex);
3304         iwl_mvm_stop_roc(mvm);
3305         mutex_unlock(&mvm->mutex);
3306
3307         IWL_DEBUG_MAC80211(mvm, "leave\n");
3308         return 0;
3309 }
3310
3311 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3312                                  struct ieee80211_chanctx_conf *ctx)
3313 {
3314         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3315         struct iwl_mvm_phy_ctxt *phy_ctxt;
3316         int ret;
3317
3318         lockdep_assert_held(&mvm->mutex);
3319
3320         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3321
3322         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3323         if (!phy_ctxt) {
3324                 ret = -ENOSPC;
3325                 goto out;
3326         }
3327
3328         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3329                                        ctx->rx_chains_static,
3330                                        ctx->rx_chains_dynamic);
3331         if (ret) {
3332                 IWL_ERR(mvm, "Failed to add PHY context\n");
3333                 goto out;
3334         }
3335
3336         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3337         *phy_ctxt_id = phy_ctxt->id;
3338 out:
3339         return ret;
3340 }
3341
3342 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3343                                struct ieee80211_chanctx_conf *ctx)
3344 {
3345         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3346         int ret;
3347
3348         mutex_lock(&mvm->mutex);
3349         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3350         mutex_unlock(&mvm->mutex);
3351
3352         return ret;
3353 }
3354
3355 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3356                                      struct ieee80211_chanctx_conf *ctx)
3357 {
3358         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3359         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3360
3361         lockdep_assert_held(&mvm->mutex);
3362
3363         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3364 }
3365
3366 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3367                                    struct ieee80211_chanctx_conf *ctx)
3368 {
3369         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3370
3371         mutex_lock(&mvm->mutex);
3372         __iwl_mvm_remove_chanctx(mvm, ctx);
3373         mutex_unlock(&mvm->mutex);
3374 }
3375
3376 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3377                                    struct ieee80211_chanctx_conf *ctx,
3378                                    u32 changed)
3379 {
3380         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3381         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3382         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3383
3384         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3385                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3386                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3387                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3388                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3389                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3390                       phy_ctxt->ref, changed))
3391                 return;
3392
3393         mutex_lock(&mvm->mutex);
3394         iwl_mvm_bt_coex_vif_change(mvm);
3395         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3396                                  ctx->rx_chains_static,
3397                                  ctx->rx_chains_dynamic);
3398         mutex_unlock(&mvm->mutex);
3399 }
3400
3401 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3402                                         struct ieee80211_vif *vif,
3403                                         struct ieee80211_chanctx_conf *ctx,
3404                                         bool switching_chanctx)
3405 {
3406         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3407         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3408         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3409         int ret;
3410
3411         lockdep_assert_held(&mvm->mutex);
3412
3413         mvmvif->phy_ctxt = phy_ctxt;
3414
3415         switch (vif->type) {
3416         case NL80211_IFTYPE_AP:
3417                 /* only needed if we're switching chanctx (i.e. during CSA) */
3418                 if (switching_chanctx) {
3419                         mvmvif->ap_ibss_active = true;
3420                         break;
3421                 }
3422         case NL80211_IFTYPE_ADHOC:
3423                 /*
3424                  * The AP binding flow is handled as part of the start_ap flow
3425                  * (in bss_info_changed), similarly for IBSS.
3426                  */
3427                 ret = 0;
3428                 goto out;
3429         case NL80211_IFTYPE_STATION:
3430                 break;
3431         case NL80211_IFTYPE_MONITOR:
3432                 /* always disable PS when a monitor interface is active */
3433                 mvmvif->ps_disabled = true;
3434                 break;
3435         default:
3436                 ret = -EINVAL;
3437                 goto out;
3438         }
3439
3440         ret = iwl_mvm_binding_add_vif(mvm, vif);
3441         if (ret)
3442                 goto out;
3443
3444         /*
3445          * Power state must be updated before quotas,
3446          * otherwise fw will complain.
3447          */
3448         iwl_mvm_power_update_mac(mvm);
3449
3450         /* Setting the quota at this stage is only required for monitor
3451          * interfaces. For the other types, the bss_info changed flow
3452          * will handle quota settings.
3453          */
3454         if (vif->type == NL80211_IFTYPE_MONITOR) {
3455                 mvmvif->monitor_active = true;
3456                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3457                 if (ret)
3458                         goto out_remove_binding;
3459
3460                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3461                 if (ret)
3462                         goto out_remove_binding;
3463
3464         }
3465
3466         /* Handle binding during CSA */
3467         if (vif->type == NL80211_IFTYPE_AP) {
3468                 iwl_mvm_update_quotas(mvm, false, NULL);
3469                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3470         }
3471
3472         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3473                 u32 duration = 2 * vif->bss_conf.beacon_int;
3474
3475                 /* iwl_mvm_protect_session() reads directly from the
3476                  * device (the system time), so make sure it is
3477                  * available.
3478                  */
3479                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3480                 if (ret)
3481                         goto out_remove_binding;
3482
3483                 /* Protect the session to make sure we hear the first
3484                  * beacon on the new channel.
3485                  */
3486                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3487                                         vif->bss_conf.beacon_int / 2,
3488                                         true);
3489
3490                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3491
3492                 iwl_mvm_update_quotas(mvm, false, NULL);
3493         }
3494
3495         goto out;
3496
3497 out_remove_binding:
3498         iwl_mvm_binding_remove_vif(mvm, vif);
3499         iwl_mvm_power_update_mac(mvm);
3500 out:
3501         if (ret)
3502                 mvmvif->phy_ctxt = NULL;
3503         return ret;
3504 }
3505 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3506                                       struct ieee80211_vif *vif,
3507                                       struct ieee80211_chanctx_conf *ctx)
3508 {
3509         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3510         int ret;
3511
3512         mutex_lock(&mvm->mutex);
3513         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3514         mutex_unlock(&mvm->mutex);
3515
3516         return ret;
3517 }
3518
3519 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3520                                            struct ieee80211_vif *vif,
3521                                            struct ieee80211_chanctx_conf *ctx,
3522                                            bool switching_chanctx)
3523 {
3524         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3525         struct ieee80211_vif *disabled_vif = NULL;
3526
3527         lockdep_assert_held(&mvm->mutex);
3528
3529         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3530
3531         switch (vif->type) {
3532         case NL80211_IFTYPE_ADHOC:
3533                 goto out;
3534         case NL80211_IFTYPE_MONITOR:
3535                 mvmvif->monitor_active = false;
3536                 mvmvif->ps_disabled = false;
3537                 iwl_mvm_rm_snif_sta(mvm, vif);
3538                 break;
3539         case NL80211_IFTYPE_AP:
3540                 /* This part is triggered only during CSA */
3541                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3542                         goto out;
3543
3544                 mvmvif->csa_countdown = false;
3545
3546                 /* Set CS bit on all the stations */
3547                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3548
3549                 /* Save blocked iface, the timeout is set on the next beacon */
3550                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3551
3552                 mvmvif->ap_ibss_active = false;
3553                 break;
3554         case NL80211_IFTYPE_STATION:
3555                 if (!switching_chanctx)
3556                         break;
3557
3558                 disabled_vif = vif;
3559
3560                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3561                 break;
3562         default:
3563                 break;
3564         }
3565
3566         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3567         iwl_mvm_binding_remove_vif(mvm, vif);
3568
3569 out:
3570         mvmvif->phy_ctxt = NULL;
3571         iwl_mvm_power_update_mac(mvm);
3572 }
3573
3574 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3575                                          struct ieee80211_vif *vif,
3576                                          struct ieee80211_chanctx_conf *ctx)
3577 {
3578         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3579
3580         mutex_lock(&mvm->mutex);
3581         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3582         mutex_unlock(&mvm->mutex);
3583 }
3584
3585 static int
3586 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3587                                 struct ieee80211_vif_chanctx_switch *vifs)
3588 {
3589         int ret;
3590
3591         mutex_lock(&mvm->mutex);
3592         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3593         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3594
3595         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3596         if (ret) {
3597                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3598                 goto out_reassign;
3599         }
3600
3601         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3602                                            true);
3603         if (ret) {
3604                 IWL_ERR(mvm,
3605                         "failed to assign new_ctx during channel switch\n");
3606                 goto out_remove;
3607         }
3608
3609         /* we don't support TDLS during DCM - can be caused by channel switch */
3610         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3611                 iwl_mvm_teardown_tdls_peers(mvm);
3612
3613         goto out;
3614
3615 out_remove:
3616         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3617
3618 out_reassign:
3619         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3620                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3621                 goto out_restart;
3622         }
3623
3624         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3625                                          true)) {
3626                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3627                 goto out_restart;
3628         }
3629
3630         goto out;
3631
3632 out_restart:
3633         /* things keep failing, better restart the hw */
3634         iwl_mvm_nic_restart(mvm, false);
3635
3636 out:
3637         mutex_unlock(&mvm->mutex);
3638
3639         return ret;
3640 }
3641
3642 static int
3643 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3644                                     struct ieee80211_vif_chanctx_switch *vifs)
3645 {
3646         int ret;
3647
3648         mutex_lock(&mvm->mutex);
3649         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3650
3651         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3652                                            true);
3653         if (ret) {
3654                 IWL_ERR(mvm,
3655                         "failed to assign new_ctx during channel switch\n");
3656                 goto out_reassign;
3657         }
3658
3659         goto out;
3660
3661 out_reassign:
3662         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3663                                          true)) {
3664                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3665                 goto out_restart;
3666         }
3667
3668         goto out;
3669
3670 out_restart:
3671         /* things keep failing, better restart the hw */
3672         iwl_mvm_nic_restart(mvm, false);
3673
3674 out:
3675         mutex_unlock(&mvm->mutex);
3676
3677         return ret;
3678 }
3679
3680 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3681                                       struct ieee80211_vif_chanctx_switch *vifs,
3682                                       int n_vifs,
3683                                       enum ieee80211_chanctx_switch_mode mode)
3684 {
3685         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3686         int ret;
3687
3688         /* we only support a single-vif right now */
3689         if (n_vifs > 1)
3690                 return -EOPNOTSUPP;
3691
3692         switch (mode) {
3693         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3694                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3695                 break;
3696         case CHANCTX_SWMODE_REASSIGN_VIF:
3697                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3698                 break;
3699         default:
3700                 ret = -EOPNOTSUPP;
3701                 break;
3702         }
3703
3704         return ret;
3705 }
3706
3707 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3708                            struct ieee80211_sta *sta,
3709                            bool set)
3710 {
3711         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3712         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3713
3714         if (!mvm_sta || !mvm_sta->vif) {
3715                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3716                 return -EINVAL;
3717         }
3718
3719         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3720 }
3721
3722 #ifdef CONFIG_NL80211_TESTMODE
3723 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3724         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3725         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3726         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3727 };
3728
3729 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3730                                       struct ieee80211_vif *vif,
3731                                       void *data, int len)
3732 {
3733         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3734         int err;
3735         u32 noa_duration;
3736
3737         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3738                         NULL);
3739         if (err)
3740                 return err;
3741
3742         if (!tb[IWL_MVM_TM_ATTR_CMD])
3743                 return -EINVAL;
3744
3745         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3746         case IWL_MVM_TM_CMD_SET_NOA:
3747                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3748                     !vif->bss_conf.enable_beacon ||
3749                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3750                         return -EINVAL;
3751
3752                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3753                 if (noa_duration >= vif->bss_conf.beacon_int)
3754                         return -EINVAL;
3755
3756                 mvm->noa_duration = noa_duration;
3757                 mvm->noa_vif = vif;
3758
3759                 return iwl_mvm_update_quotas(mvm, false, NULL);
3760         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3761                 /* must be associated client vif - ignore authorized */
3762                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3763                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3764                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3765                         return -EINVAL;
3766
3767                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3768                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3769                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3770         }
3771
3772         return -EOPNOTSUPP;
3773 }
3774
3775 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3776                                     struct ieee80211_vif *vif,
3777                                     void *data, int len)
3778 {
3779         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3780         int err;
3781
3782         mutex_lock(&mvm->mutex);
3783         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3784         mutex_unlock(&mvm->mutex);
3785
3786         return err;
3787 }
3788 #endif
3789
3790 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3791                                    struct ieee80211_vif *vif,
3792                                    struct ieee80211_channel_switch *chsw)
3793 {
3794         /* By implementing this operation, we prevent mac80211 from
3795          * starting its own channel switch timer, so that we can call
3796          * ieee80211_chswitch_done() ourselves at the right time
3797          * (which is when the absence time event starts).
3798          */
3799
3800         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3801                            "dummy channel switch op\n");
3802 }
3803
3804 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3805                                       struct ieee80211_vif *vif,
3806                                       struct ieee80211_channel_switch *chsw)
3807 {
3808         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3809         struct ieee80211_vif *csa_vif;
3810         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3811         u32 apply_time;
3812         int ret;
3813
3814         mutex_lock(&mvm->mutex);
3815
3816         mvmvif->csa_failed = false;
3817
3818         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3819                            chsw->chandef.center_freq1);
3820
3821         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3822
3823         switch (vif->type) {
3824         case NL80211_IFTYPE_AP:
3825                 csa_vif =
3826                         rcu_dereference_protected(mvm->csa_vif,
3827                                                   lockdep_is_held(&mvm->mutex));
3828                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3829                               "Another CSA is already in progress")) {
3830                         ret = -EBUSY;
3831                         goto out_unlock;
3832                 }
3833
3834                 /* we still didn't unblock tx. prevent new CS meanwhile */
3835                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3836                                               lockdep_is_held(&mvm->mutex))) {
3837                         ret = -EBUSY;
3838                         goto out_unlock;
3839                 }
3840
3841                 rcu_assign_pointer(mvm->csa_vif, vif);
3842
3843                 if (WARN_ONCE(mvmvif->csa_countdown,
3844                               "Previous CSA countdown didn't complete")) {
3845                         ret = -EBUSY;
3846                         goto out_unlock;
3847                 }
3848
3849                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3850
3851                 break;
3852         case NL80211_IFTYPE_STATION:
3853                 if (mvmvif->lqm_active)
3854                         iwl_mvm_send_lqm_cmd(vif,
3855                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3856                                              0, 0);
3857
3858                 /* Schedule the time event to a bit before beacon 1,
3859                  * to make sure we're in the new channel when the
3860                  * GO/AP arrives.
3861                  */
3862                 apply_time = chsw->device_timestamp +
3863                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3864                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3865
3866                 if (chsw->block_tx)
3867                         iwl_mvm_csa_client_absent(mvm, vif);
3868
3869                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3870                                             apply_time);
3871                 if (mvmvif->bf_data.bf_enabled) {
3872                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3873                         if (ret)
3874                                 goto out_unlock;
3875                 }
3876
3877                 break;
3878         default:
3879                 break;
3880         }
3881
3882         mvmvif->ps_disabled = true;
3883
3884         ret = iwl_mvm_power_update_ps(mvm);
3885         if (ret)
3886                 goto out_unlock;
3887
3888         /* we won't be on this channel any longer */
3889         iwl_mvm_teardown_tdls_peers(mvm);
3890
3891 out_unlock:
3892         mutex_unlock(&mvm->mutex);
3893
3894         return ret;
3895 }
3896
3897 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3898                                        struct ieee80211_vif *vif)
3899 {
3900         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3901         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3902         int ret;
3903
3904         mutex_lock(&mvm->mutex);
3905
3906         if (mvmvif->csa_failed) {
3907                 mvmvif->csa_failed = false;
3908                 ret = -EIO;
3909                 goto out_unlock;
3910         }
3911
3912         if (vif->type == NL80211_IFTYPE_STATION) {
3913                 struct iwl_mvm_sta *mvmsta;
3914
3915                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3916                                                           mvmvif->ap_sta_id);
3917
3918                 if (WARN_ON(!mvmsta)) {
3919                         ret = -EIO;
3920                         goto out_unlock;
3921                 }
3922
3923                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3924
3925                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3926
3927                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3928                 if (ret)
3929                         goto out_unlock;
3930
3931                 iwl_mvm_stop_session_protection(mvm, vif);
3932         }
3933
3934         mvmvif->ps_disabled = false;
3935
3936         ret = iwl_mvm_power_update_ps(mvm);
3937
3938 out_unlock:
3939         mutex_unlock(&mvm->mutex);
3940
3941         return ret;
3942 }
3943
3944 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3945                               struct ieee80211_vif *vif, u32 queues, bool drop)
3946 {
3947         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3948         struct iwl_mvm_vif *mvmvif;
3949         struct iwl_mvm_sta *mvmsta;
3950         struct ieee80211_sta *sta;
3951         int i;
3952         u32 msk = 0;
3953
3954         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3955                 return;
3956
3957         /* Make sure we're done with the deferred traffic before flushing */
3958         if (iwl_mvm_is_dqa_supported(mvm))
3959                 flush_work(&mvm->add_stream_wk);
3960
3961         mutex_lock(&mvm->mutex);
3962         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3963
3964         /* flush the AP-station and all TDLS peers */
3965         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
3966                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3967                                                 lockdep_is_held(&mvm->mutex));
3968                 if (IS_ERR_OR_NULL(sta))
3969                         continue;
3970
3971                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3972                 if (mvmsta->vif != vif)
3973                         continue;
3974
3975                 /* make sure only TDLS peers or the AP are flushed */
3976                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3977
3978                 msk |= mvmsta->tfd_queue_msk;
3979         }
3980
3981         if (drop) {
3982                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3983                         IWL_ERR(mvm, "flush request fail\n");
3984                 mutex_unlock(&mvm->mutex);
3985         } else {
3986                 mutex_unlock(&mvm->mutex);
3987
3988                 /* this can take a while, and we may need/want other operations
3989                  * to succeed while doing this, so do it without the mutex held
3990                  */
3991                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3992         }
3993 }
3994
3995 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3996                                   struct survey_info *survey)
3997 {
3998         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3999         int ret;
4000
4001         memset(survey, 0, sizeof(*survey));
4002
4003         /* only support global statistics right now */
4004         if (idx != 0)
4005                 return -ENOENT;
4006
4007         if (!fw_has_capa(&mvm->fw->ucode_capa,
4008                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4009                 return -ENOENT;
4010
4011         mutex_lock(&mvm->mutex);
4012
4013         if (mvm->ucode_loaded) {
4014                 ret = iwl_mvm_request_statistics(mvm, false);
4015                 if (ret)
4016                         goto out;
4017         }
4018
4019         survey->filled = SURVEY_INFO_TIME |
4020                          SURVEY_INFO_TIME_RX |
4021                          SURVEY_INFO_TIME_TX |
4022                          SURVEY_INFO_TIME_SCAN;
4023         survey->time = mvm->accu_radio_stats.on_time_rf +
4024                        mvm->radio_stats.on_time_rf;
4025         do_div(survey->time, USEC_PER_MSEC);
4026
4027         survey->time_rx = mvm->accu_radio_stats.rx_time +
4028                           mvm->radio_stats.rx_time;
4029         do_div(survey->time_rx, USEC_PER_MSEC);
4030
4031         survey->time_tx = mvm->accu_radio_stats.tx_time +
4032                           mvm->radio_stats.tx_time;
4033         do_div(survey->time_tx, USEC_PER_MSEC);
4034
4035         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4036                             mvm->radio_stats.on_time_scan;
4037         do_div(survey->time_scan, USEC_PER_MSEC);
4038
4039         ret = 0;
4040  out:
4041         mutex_unlock(&mvm->mutex);
4042         return ret;
4043 }
4044
4045 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4046                                        struct ieee80211_vif *vif,
4047                                        struct ieee80211_sta *sta,
4048                                        struct station_info *sinfo)
4049 {
4050         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4051         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4052         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4053
4054         if (mvmsta->avg_energy) {
4055                 sinfo->signal_avg = mvmsta->avg_energy;
4056                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4057         }
4058
4059         if (!fw_has_capa(&mvm->fw->ucode_capa,
4060                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4061                 return;
4062
4063         /* if beacon filtering isn't on mac80211 does it anyway */
4064         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4065                 return;
4066
4067         if (!vif->bss_conf.assoc)
4068                 return;
4069
4070         mutex_lock(&mvm->mutex);
4071
4072         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4073                 goto unlock;
4074
4075         if (iwl_mvm_request_statistics(mvm, false))
4076                 goto unlock;
4077
4078         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4079                            mvmvif->beacon_stats.accu_num_beacons;
4080         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4081         if (mvmvif->beacon_stats.avg_signal) {
4082                 /* firmware only reports a value after RXing a few beacons */
4083                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4084                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4085         }
4086  unlock:
4087         mutex_unlock(&mvm->mutex);
4088 }
4089
4090 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4091                                         struct ieee80211_vif *vif,
4092                                         const struct ieee80211_event *event)
4093 {
4094 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
4095         do {                                                    \
4096                 if ((_cnt) && --(_cnt))                         \
4097                         break;                                  \
4098                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4099         } while (0)
4100
4101         struct iwl_fw_dbg_trigger_tlv *trig;
4102         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4103
4104         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4105                 return;
4106
4107         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4108         trig_mlme = (void *)trig->data;
4109         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4110                 return;
4111
4112         if (event->u.mlme.data == ASSOC_EVENT) {
4113                 if (event->u.mlme.status == MLME_DENIED)
4114                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4115                                            trig_mlme->stop_assoc_denied,
4116                                            "DENIED ASSOC: reason %d",
4117                                             event->u.mlme.reason);
4118                 else if (event->u.mlme.status == MLME_TIMEOUT)
4119                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4120                                            trig_mlme->stop_assoc_timeout,
4121                                            "ASSOC TIMEOUT");
4122         } else if (event->u.mlme.data == AUTH_EVENT) {
4123                 if (event->u.mlme.status == MLME_DENIED)
4124                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4125                                            trig_mlme->stop_auth_denied,
4126                                            "DENIED AUTH: reason %d",
4127                                            event->u.mlme.reason);
4128                 else if (event->u.mlme.status == MLME_TIMEOUT)
4129                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4130                                            trig_mlme->stop_auth_timeout,
4131                                            "AUTH TIMEOUT");
4132         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4133                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4134                                    trig_mlme->stop_rx_deauth,
4135                                    "DEAUTH RX %d", event->u.mlme.reason);
4136         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4137                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4138                                    trig_mlme->stop_tx_deauth,
4139                                    "DEAUTH TX %d", event->u.mlme.reason);
4140         }
4141 #undef CHECK_MLME_TRIGGER
4142 }
4143
4144 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4145                                           struct ieee80211_vif *vif,
4146                                           const struct ieee80211_event *event)
4147 {
4148         struct iwl_fw_dbg_trigger_tlv *trig;
4149         struct iwl_fw_dbg_trigger_ba *ba_trig;
4150
4151         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4152                 return;
4153
4154         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4155         ba_trig = (void *)trig->data;
4156         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4157                 return;
4158
4159         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4160                 return;
4161
4162         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4163                                     "BAR received from %pM, tid %d, ssn %d",
4164                                     event->u.ba.sta->addr, event->u.ba.tid,
4165                                     event->u.ba.ssn);
4166 }
4167
4168 static void
4169 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4170                                      struct ieee80211_vif *vif,
4171                                      const struct ieee80211_event *event)
4172 {
4173         struct iwl_fw_dbg_trigger_tlv *trig;
4174         struct iwl_fw_dbg_trigger_ba *ba_trig;
4175
4176         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4177                 return;
4178
4179         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4180         ba_trig = (void *)trig->data;
4181         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4182                 return;
4183
4184         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4185                 return;
4186
4187         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4188                                     "Frame from %pM timed out, tid %d",
4189                                     event->u.ba.sta->addr, event->u.ba.tid);
4190 }
4191
4192 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4193                                        struct ieee80211_vif *vif,
4194                                        const struct ieee80211_event *event)
4195 {
4196         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4197
4198         switch (event->type) {
4199         case MLME_EVENT:
4200                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4201                 break;
4202         case BAR_RX_EVENT:
4203                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4204                 break;
4205         case BA_FRAME_TIMEOUT:
4206                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4207                 break;
4208         default:
4209                 break;
4210         }
4211 }
4212
4213 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4214                                      struct iwl_mvm_internal_rxq_notif *notif,
4215                                      u32 size)
4216 {
4217         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4218         int ret;
4219
4220         lockdep_assert_held(&mvm->mutex);
4221
4222         /* TODO - remove a000 disablement when we have RXQ config API */
4223         if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4224                 return;
4225
4226         notif->cookie = mvm->queue_sync_cookie;
4227
4228         if (notif->sync)
4229                 atomic_set(&mvm->queue_sync_counter,
4230                            mvm->trans->num_rx_queues);
4231
4232         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4233         if (ret) {
4234                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4235                 goto out;
4236         }
4237
4238         if (notif->sync)
4239                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4240                                          atomic_read(&mvm->queue_sync_counter) == 0,
4241                                          HZ);
4242         WARN_ON_ONCE(!ret);
4243
4244 out:
4245         atomic_set(&mvm->queue_sync_counter, 0);
4246         mvm->queue_sync_cookie++;
4247 }
4248
4249 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4250 {
4251         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4252         struct iwl_mvm_internal_rxq_notif data = {
4253                 .type = IWL_MVM_RXQ_EMPTY,
4254                 .sync = 1,
4255         };
4256
4257         mutex_lock(&mvm->mutex);
4258         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4259         mutex_unlock(&mvm->mutex);
4260 }
4261
4262 const struct ieee80211_ops iwl_mvm_hw_ops = {
4263         .tx = iwl_mvm_mac_tx,
4264         .ampdu_action = iwl_mvm_mac_ampdu_action,
4265         .start = iwl_mvm_mac_start,
4266         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4267         .stop = iwl_mvm_mac_stop,
4268         .add_interface = iwl_mvm_mac_add_interface,
4269         .remove_interface = iwl_mvm_mac_remove_interface,
4270         .config = iwl_mvm_mac_config,
4271         .prepare_multicast = iwl_mvm_prepare_multicast,
4272         .configure_filter = iwl_mvm_configure_filter,
4273         .config_iface_filter = iwl_mvm_config_iface_filter,
4274         .bss_info_changed = iwl_mvm_bss_info_changed,
4275         .hw_scan = iwl_mvm_mac_hw_scan,
4276         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4277         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4278         .sta_state = iwl_mvm_mac_sta_state,
4279         .sta_notify = iwl_mvm_mac_sta_notify,
4280         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4281         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4282         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4283         .sta_rc_update = iwl_mvm_sta_rc_update,
4284         .conf_tx = iwl_mvm_mac_conf_tx,
4285         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4286         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4287         .flush = iwl_mvm_mac_flush,
4288         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4289         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4290         .set_key = iwl_mvm_mac_set_key,
4291         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4292         .remain_on_channel = iwl_mvm_roc,
4293         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4294         .add_chanctx = iwl_mvm_add_chanctx,
4295         .remove_chanctx = iwl_mvm_remove_chanctx,
4296         .change_chanctx = iwl_mvm_change_chanctx,
4297         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4298         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4299         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4300
4301         .start_ap = iwl_mvm_start_ap_ibss,
4302         .stop_ap = iwl_mvm_stop_ap_ibss,
4303         .join_ibss = iwl_mvm_start_ap_ibss,
4304         .leave_ibss = iwl_mvm_stop_ap_ibss,
4305
4306         .set_tim = iwl_mvm_set_tim,
4307
4308         .channel_switch = iwl_mvm_channel_switch,
4309         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4310         .post_channel_switch = iwl_mvm_post_channel_switch,
4311
4312         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4313         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4314         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4315
4316         .event_callback = iwl_mvm_mac_event_callback,
4317
4318         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4319
4320         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4321
4322 #ifdef CONFIG_PM_SLEEP
4323         /* look at d3.c */
4324         .suspend = iwl_mvm_suspend,
4325         .resume = iwl_mvm_resume,
4326         .set_wakeup = iwl_mvm_set_wakeup,
4327         .set_rekey_data = iwl_mvm_set_rekey_data,
4328 #if IS_ENABLED(CONFIG_IPV6)
4329         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4330 #endif
4331         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4332 #endif
4333         .get_survey = iwl_mvm_mac_get_survey,
4334         .sta_statistics = iwl_mvm_mac_sta_statistics,
4335 };