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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
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  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/kernel.h>
  68 #include <linux/slab.h>
  69 #include <linux/skbuff.h>
  70 #include <linux/netdevice.h>
  71 #include <linux/etherdevice.h>
  72 #include <linux/ip.h>
  73 #include <linux/if_arp.h>
  74 #include <linux/time.h>
  75 #include <net/mac80211.h>
  76 #include <net/ieee80211_radiotap.h>
  77 #include <net/tcp.h>
  78
  79 #include "iwl-op-mode.h"
  80 #include "iwl-io.h"
  81 #include "mvm.h"
  82 #include "sta.h"
  83 #include "time-event.h"
  84 #include "iwl-eeprom-parse.h"
  85 #include "iwl-phy-db.h"
  86 #include "testmode.h"
  87 #include "fw/error-dump.h"
  88 #include "iwl-prph.h"
  89 #include "iwl-nvm-parse.h"
  90 #include "fw-dbg.h"
  91
  92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_STATION),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_AP) |
 100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 101                         BIT(NL80211_IFTYPE_P2P_GO),
 102         },
 103         {
 104                 .max = 1,
 105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 106         },
 107 };
 108
 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 110         {
 111                 .num_different_channels = 2,
 112                 .max_interfaces = 3,
 113                 .limits = iwl_mvm_limits,
 114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 115         },
 116 };
 117
 118 #ifdef CONFIG_PM_SLEEP
 119 static const struct nl80211_wowlan_tcp_data_token_feature
 120 iwl_mvm_wowlan_tcp_token_feature = {
 121         .min_len = 0,
 122         .max_len = 255,
 123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 124 };
 125
 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 129                             sizeof(struct ethhdr) -
 130                             sizeof(struct iphdr) -
 131                             sizeof(struct tcphdr),
 132         .data_interval_max = 65535, /* __le16 in API */
 133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 134                             sizeof(struct ethhdr) -
 135                             sizeof(struct iphdr) -
 136                             sizeof(struct tcphdr),
 137         .seq = true,
 138 };
 139 #endif
 140
 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 142 /*
 143  * Use the reserved field to indicate magic values.
 144  * these values will only be used internally by the driver,
 145  * and won't make it to the fw (reserved will be 0).
 146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 147  *      be the vif's ip address. in case there is not a single
 148  *      ip address (0, or more than 1), this attribute will
 149  *      be skipped.
 150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 151  *      the LSB bytes of the vif's mac address
 152  */
 153 enum {
 154         BC_FILTER_MAGIC_NONE = 0,
 155         BC_FILTER_MAGIC_IP,
 156         BC_FILTER_MAGIC_MAC,
 157 };
 158
 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 160         {
 161                 /* arp */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 164                 .attrs = {
 165                         {
 166                                 /* frame type - arp, hw type - ethernet */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header),
 170                                 .val = cpu_to_be32(0x08060001),
 171                                 .mask = cpu_to_be32(0xffffffff),
 172                         },
 173                         {
 174                                 /* arp dest ip */
 175                                 .offset_type =
 176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 177                                 .offset = sizeof(rfc1042_header) + 2 +
 178                                           sizeof(struct arphdr) +
 179                                           ETH_ALEN + sizeof(__be32) +
 180                                           ETH_ALEN,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 184                         },
 185                 },
 186         },
 187         {
 188                 /* dhcp offer bcast */
 189                 .discard = 0,
 190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 191                 .attrs = {
 192                         {
 193                                 /* udp dest port - 68 (bootp client)*/
 194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 195                                 .offset = offsetof(struct udphdr, dest),
 196                                 .val = cpu_to_be32(0x00440000),
 197                                 .mask = cpu_to_be32(0xffff0000),
 198                         },
 199                         {
 200                                 /* dhcp - lsb bytes of client hw address */
 201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 202                                 .offset = 38,
 203                                 .mask = cpu_to_be32(0xffffffff),
 204                                 /* mark it as special field */
 205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 206                         },
 207                 },
 208         },
 209         /* last filter must be empty */
 210         {},
 211 };
 212 #endif
 213
 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 215 {
 216         if (!iwl_mvm_is_d0i3_supported(mvm))
 217                 return;
 218
 219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 220         spin_lock_bh(&mvm->refs_lock);
 221         mvm->refs[ref_type]++;
 222         spin_unlock_bh(&mvm->refs_lock);
 223         iwl_trans_ref(mvm->trans);
 224 }
 225
 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 227 {
 228         if (!iwl_mvm_is_d0i3_supported(mvm))
 229                 return;
 230
 231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 232         spin_lock_bh(&mvm->refs_lock);
 233         if (WARN_ON(!mvm->refs[ref_type])) {
 234                 spin_unlock_bh(&mvm->refs_lock);
 235                 return;
 236         }
 237         mvm->refs[ref_type]--;
 238         spin_unlock_bh(&mvm->refs_lock);
 239         iwl_trans_unref(mvm->trans);
 240 }
 241
 242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 243                                      enum iwl_mvm_ref_type except_ref)
 244 {
 245         int i, j;
 246
 247         if (!iwl_mvm_is_d0i3_supported(mvm))
 248                 return;
 249
 250         spin_lock_bh(&mvm->refs_lock);
 251         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 252                 if (except_ref == i || !mvm->refs[i])
 253                         continue;
 254
 255                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 256                               i, mvm->refs[i]);
 257                 for (j = 0; j < mvm->refs[i]; j++)
 258                         iwl_trans_unref(mvm->trans);
 259                 mvm->refs[i] = 0;
 260         }
 261         spin_unlock_bh(&mvm->refs_lock);
 262 }
 263
 264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 265 {
 266         int i;
 267         bool taken = false;
 268
 269         if (!iwl_mvm_is_d0i3_supported(mvm))
 270                 return true;
 271
 272         spin_lock_bh(&mvm->refs_lock);
 273         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 274                 if (mvm->refs[i]) {
 275                         taken = true;
 276                         break;
 277                 }
 278         }
 279         spin_unlock_bh(&mvm->refs_lock);
 280
 281         return taken;
 282 }
 283
 284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 285 {
 286         iwl_mvm_ref(mvm, ref_type);
 287
 288         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 289                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 290                                 HZ)) {
 291                 WARN_ON_ONCE(1);
 292                 iwl_mvm_unref(mvm, ref_type);
 293                 return -EIO;
 294         }
 295
 296         return 0;
 297 }
 298
 299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 300 {
 301         int i;
 302
 303         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 304         for (i = 0; i < NUM_PHY_CTX; i++) {
 305                 mvm->phy_ctxts[i].id = i;
 306                 mvm->phy_ctxts[i].ref = 0;
 307         }
 308 }
 309
 310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 311                                                   const char *alpha2,
 312                                                   enum iwl_mcc_source src_id,
 313                                                   bool *changed)
 314 {
 315         struct ieee80211_regdomain *regd = NULL;
 316         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 317         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 318         struct iwl_mcc_update_resp *resp;
 319
 320         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 321
 322         lockdep_assert_held(&mvm->mutex);
 323
 324         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 325         if (IS_ERR_OR_NULL(resp)) {
 326                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 327                               PTR_ERR_OR_ZERO(resp));
 328                 goto out;
 329         }
 330
 331         if (changed)
 332                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 333
 334         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 335                                       __le32_to_cpu(resp->n_channels),
 336                                       resp->channels,
 337                                       __le16_to_cpu(resp->mcc));
 338         /* Store the return source id */
 339         src_id = resp->source_id;
 340         kfree(resp);
 341         if (IS_ERR_OR_NULL(regd)) {
 342                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 343                               PTR_ERR_OR_ZERO(regd));
 344                 goto out;
 345         }
 346
 347         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 348                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 349         mvm->lar_regdom_set = true;
 350         mvm->mcc_src = src_id;
 351
 352 out:
 353         return regd;
 354 }
 355
 356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 357 {
 358         bool changed;
 359         struct ieee80211_regdomain *regd;
 360
 361         if (!iwl_mvm_is_lar_supported(mvm))
 362                 return;
 363
 364         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 365         if (!IS_ERR_OR_NULL(regd)) {
 366                 /* only update the regulatory core if changed */
 367                 if (changed)
 368                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 369
 370                 kfree(regd);
 371         }
 372 }
 373
 374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 375                                                           bool *changed)
 376 {
 377         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 378                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 379                                      MCC_SOURCE_GET_CURRENT :
 380                                      MCC_SOURCE_OLD_FW, changed);
 381 }
 382
 383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 384 {
 385         enum iwl_mcc_source used_src;
 386         struct ieee80211_regdomain *regd;
 387         int ret;
 388         bool changed;
 389         const struct ieee80211_regdomain *r =
 390                         rtnl_dereference(mvm->hw->wiphy->regd);
 391
 392         if (!r)
 393                 return -ENOENT;
 394
 395         /* save the last source in case we overwrite it below */
 396         used_src = mvm->mcc_src;
 397         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 398                 /* Notify the firmware we support wifi location updates */
 399                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 400                 if (!IS_ERR_OR_NULL(regd))
 401                         kfree(regd);
 402         }
 403
 404         /* Now set our last stored MCC and source */
 405         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 406                                      &changed);
 407         if (IS_ERR_OR_NULL(regd))
 408                 return -EIO;
 409
 410         /* update cfg80211 if the regdomain was changed */
 411         if (changed)
 412                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 413         else
 414                 ret = 0;
 415
 416         kfree(regd);
 417         return ret;
 418 }
 419
 420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 421 {
 422         struct ieee80211_hw *hw = mvm->hw;
 423         int num_mac, ret, i;
 424         static const u32 mvm_ciphers[] = {
 425                 WLAN_CIPHER_SUITE_WEP40,
 426                 WLAN_CIPHER_SUITE_WEP104,
 427                 WLAN_CIPHER_SUITE_TKIP,
 428                 WLAN_CIPHER_SUITE_CCMP,
 429         };
 430
 431         /* Tell mac80211 our characteristics */
 432         ieee80211_hw_set(hw, SIGNAL_DBM);
 433         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 434         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 435         ieee80211_hw_set(hw, QUEUE_CONTROL);
 436         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 437         ieee80211_hw_set(hw, SUPPORTS_PS);
 438         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 439         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 440         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 441         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 442         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 443         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 444         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 445         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 446         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 447         if (iwl_mvm_has_new_rx_api(mvm))
 448                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 449         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
 450                 ieee80211_hw_set(hw, AP_LINK_PS);
 451
 452         if (mvm->trans->num_rx_queues > 1)
 453                 ieee80211_hw_set(hw, USES_RSS);
 454
 455         if (mvm->trans->max_skb_frags)
 456                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 457
 458         if (!iwl_mvm_is_dqa_supported(mvm))
 459                 hw->queues = mvm->first_agg_queue;
 460         else
 461                 hw->queues = IEEE80211_MAX_QUEUES;
 462         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 463         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 464                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 465         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 466                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 467
 468         hw->radiotap_timestamp.units_pos =
 469                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 470                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 471         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 472         hw->radiotap_timestamp.accuracy = 22;
 473
 474         hw->rate_control_algorithm = "iwl-mvm-rs";
 475         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 476         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 477
 478         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 479         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 480         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 481         hw->wiphy->cipher_suites = mvm->ciphers;
 482
 483         if (iwl_mvm_has_new_rx_api(mvm)) {
 484                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 485                         WLAN_CIPHER_SUITE_GCMP;
 486                 hw->wiphy->n_cipher_suites++;
 487                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 488                         WLAN_CIPHER_SUITE_GCMP_256;
 489                 hw->wiphy->n_cipher_suites++;
 490         }
 491
 492         /* Enable 11w if software crypto is not enabled (as the
 493          * firmware will interpret some mgmt packets, so enabling it
 494          * with software crypto isn't safe).
 495          */
 496         if (!iwlwifi_mod_params.swcrypto) {
 497                 ieee80211_hw_set(hw, MFP_CAPABLE);
 498                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 499                         WLAN_CIPHER_SUITE_AES_CMAC;
 500                 hw->wiphy->n_cipher_suites++;
 501                 if (iwl_mvm_has_new_rx_api(mvm)) {
 502                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 503                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 504                         hw->wiphy->n_cipher_suites++;
 505                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 506                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 507                         hw->wiphy->n_cipher_suites++;
 508                 }
 509         }
 510
 511         /* currently FW API supports only one optional cipher scheme */
 512         if (mvm->fw->cs[0].cipher) {
 513                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 514                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 515
 516                 mvm->hw->n_cipher_schemes = 1;
 517
 518                 cs->cipher = le32_to_cpu(fwcs->cipher);
 519                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 520                 cs->hdr_len = fwcs->hdr_len;
 521                 cs->pn_len = fwcs->pn_len;
 522                 cs->pn_off = fwcs->pn_off;
 523                 cs->key_idx_off = fwcs->key_idx_off;
 524                 cs->key_idx_mask = fwcs->key_idx_mask;
 525                 cs->key_idx_shift = fwcs->key_idx_shift;
 526                 cs->mic_len = fwcs->mic_len;
 527
 528                 mvm->hw->cipher_schemes = mvm->cs;
 529                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 530                 hw->wiphy->n_cipher_suites++;
 531         }
 532
 533         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 534         hw->wiphy->features |=
 535                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 536                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 537                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 538
 539         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 540         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 541         hw->chanctx_data_size = sizeof(u16);
 542
 543         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 544                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 545                 BIT(NL80211_IFTYPE_AP) |
 546                 BIT(NL80211_IFTYPE_P2P_GO) |
 547                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 548                 BIT(NL80211_IFTYPE_ADHOC);
 549
 550         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 551         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 552         if (iwl_mvm_is_lar_supported(mvm))
 553                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 554         else
 555                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 556                                                REGULATORY_DISABLE_BEACON_HINTS;
 557
 558         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 559         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 560
 561         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 562         hw->wiphy->n_iface_combinations =
 563                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 564
 565         hw->wiphy->max_remain_on_channel_duration = 10000;
 566         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 567         /* we can compensate an offset of up to 3 channels = 15 MHz */
 568         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 569
 570         /* Extract MAC address */
 571         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 572         hw->wiphy->addresses = mvm->addresses;
 573         hw->wiphy->n_addresses = 1;
 574
 575         /* Extract additional MAC addresses if available */
 576         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 577                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 578
 579         for (i = 1; i < num_mac; i++) {
 580                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 581                        ETH_ALEN);
 582                 mvm->addresses[i].addr[5]++;
 583                 hw->wiphy->n_addresses++;
 584         }
 585
 586         iwl_mvm_reset_phy_ctxts(mvm);
 587
 588         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 589
 590         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 591
 592         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 593         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 594                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 595
 596         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 597                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 598         else
 599                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 600
 601         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 602                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 603                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 604         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 605                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 606                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 607
 608                 if (fw_has_capa(&mvm->fw->ucode_capa,
 609                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 610                     fw_has_api(&mvm->fw->ucode_capa,
 611                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 612                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 613                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 614         }
 615
 616         hw->wiphy->hw_version = mvm->trans->hw_id;
 617
 618         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 619                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 620         else
 621                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 622
 623         hw->wiphy->max_sched_scan_reqs = 1;
 624         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 625         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 626         /* we create the 802.11 header and zero length SSID IE. */
 627         hw->wiphy->max_sched_scan_ie_len =
 628                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 629         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 630         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 631
 632         /*
 633          * the firmware uses u8 for num of iterations, but 0xff is saved for
 634          * infinite loop, so the maximum number of iterations is actually 254.
 635          */
 636         hw->wiphy->max_sched_scan_plan_iterations = 254;
 637
 638         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 639                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 640                                NL80211_FEATURE_P2P_GO_OPPPS |
 641                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 642                                NL80211_FEATURE_DYNAMIC_SMPS |
 643                                NL80211_FEATURE_STATIC_SMPS |
 644                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 648                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 649         if (fw_has_capa(&mvm->fw->ucode_capa,
 650                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 651                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 652
 653         if (fw_has_capa(&mvm->fw->ucode_capa,
 654                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 655                 hw->wiphy->features |=
 656                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 657
 658         if (fw_has_capa(&mvm->fw->ucode_capa,
 659                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 660                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 661
 662         if (fw_has_api(&mvm->fw->ucode_capa,
 663                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 664                 wiphy_ext_feature_set(hw->wiphy,
 665                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 666                 wiphy_ext_feature_set(hw->wiphy,
 667                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 668                 wiphy_ext_feature_set(hw->wiphy,
 669                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 670         }
 671
 672         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 673
 674 #ifdef CONFIG_PM_SLEEP
 675         if (iwl_mvm_is_d0i3_supported(mvm) &&
 676             device_can_wakeup(mvm->trans->dev)) {
 677                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 678                 hw->wiphy->wowlan = &mvm->wowlan;
 679         }
 680
 681         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 682             mvm->trans->ops->d3_suspend &&
 683             mvm->trans->ops->d3_resume &&
 684             device_can_wakeup(mvm->trans->dev)) {
 685                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 686                                      WIPHY_WOWLAN_DISCONNECT |
 687                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 688                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 689                                      WIPHY_WOWLAN_NET_DETECT;
 690                 if (!iwlwifi_mod_params.swcrypto)
 691                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 692                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 693                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 694
 695                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 696                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 697                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 698                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 699                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 700                 hw->wiphy->wowlan = &mvm->wowlan;
 701         }
 702 #endif
 703
 704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 705         /* assign default bcast filtering configuration */
 706         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 707 #endif
 708
 709         ret = iwl_mvm_leds_init(mvm);
 710         if (ret)
 711                 return ret;
 712
 713         if (fw_has_capa(&mvm->fw->ucode_capa,
 714                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 715                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 716                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 717                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 718         }
 719
 720         if (fw_has_capa(&mvm->fw->ucode_capa,
 721                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 722                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 723                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 724         }
 725
 726         hw->netdev_features |= mvm->cfg->features;
 727         if (!iwl_mvm_is_csum_supported(mvm)) {
 728                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 729                                          NETIF_F_RXCSUM);
 730                 /* We may support SW TX CSUM */
 731                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 732                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 733         }
 734
 735         ret = ieee80211_register_hw(mvm->hw);
 736         if (ret)
 737                 iwl_mvm_leds_exit(mvm);
 738         mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 739
 740         if (mvm->cfg->vht_mu_mimo_supported)
 741                 wiphy_ext_feature_set(hw->wiphy,
 742                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 743
 744         return ret;
 745 }
 746
 747 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 748                              struct ieee80211_sta *sta,
 749                              struct sk_buff *skb)
 750 {
 751         struct iwl_mvm_sta *mvmsta;
 752         bool defer = false;
 753
 754         /*
 755          * double check the IN_D0I3 flag both before and after
 756          * taking the spinlock, in order to prevent taking
 757          * the spinlock when not needed.
 758          */
 759         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 760                 return false;
 761
 762         spin_lock(&mvm->d0i3_tx_lock);
 763         /*
 764          * testing the flag again ensures the skb dequeue
 765          * loop (on d0i3 exit) hasn't run yet.
 766          */
 767         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 768                 goto out;
 769
 770         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 771         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 772             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 773                 goto out;
 774
 775         __skb_queue_tail(&mvm->d0i3_tx, skb);
 776         ieee80211_stop_queues(mvm->hw);
 777
 778         /* trigger wakeup */
 779         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 780         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 781
 782         defer = true;
 783 out:
 784         spin_unlock(&mvm->d0i3_tx_lock);
 785         return defer;
 786 }
 787
 788 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 789                            struct ieee80211_tx_control *control,
 790                            struct sk_buff *skb)
 791 {
 792         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 793         struct ieee80211_sta *sta = control->sta;
 794         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 795         struct ieee80211_hdr *hdr = (void *)skb->data;
 796
 797         if (iwl_mvm_is_radio_killed(mvm)) {
 798                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 799                 goto drop;
 800         }
 801
 802         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 803             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 804             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 805                 goto drop;
 806
 807         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 808         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 809                      ieee80211_is_mgmt(hdr->frame_control) &&
 810                      !ieee80211_is_deauth(hdr->frame_control) &&
 811                      !ieee80211_is_disassoc(hdr->frame_control) &&
 812                      !ieee80211_is_action(hdr->frame_control)))
 813                 sta = NULL;
 814
 815         if (sta) {
 816                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 817                         return;
 818                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 819                         goto drop;
 820                 return;
 821         }
 822
 823         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 824                 goto drop;
 825         return;
 826  drop:
 827         ieee80211_free_txskb(hw, skb);
 828 }
 829
 830 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 831 {
 832         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 833                 return false;
 834         return true;
 835 }
 836
 837 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 838 {
 839         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 840                 return false;
 841         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 842                 return true;
 843
 844         /* enabled by default */
 845         return true;
 846 }
 847
 848 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 849         do {                                                    \
 850                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 851                         break;                                  \
 852                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 853         } while (0)
 854
 855 static void
 856 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 857                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 858                             enum ieee80211_ampdu_mlme_action action)
 859 {
 860         struct iwl_fw_dbg_trigger_tlv *trig;
 861         struct iwl_fw_dbg_trigger_ba *ba_trig;
 862
 863         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 864                 return;
 865
 866         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 867         ba_trig = (void *)trig->data;
 868
 869         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 870                 return;
 871
 872         switch (action) {
 873         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 874                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 875                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 876
 877                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 878                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 879                                  sta->addr, tid, tid_data->ssn);
 880                 break;
 881                 }
 882         case IEEE80211_AMPDU_TX_STOP_CONT:
 883                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 884                                  "TX AGG STOP: MAC %pM tid %d\n",
 885                                  sta->addr, tid);
 886                 break;
 887         case IEEE80211_AMPDU_RX_START:
 888                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 889                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 890                                  sta->addr, tid, rx_ba_ssn);
 891                 break;
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 894                                  "RX AGG STOP: MAC %pM tid %d\n",
 895                                  sta->addr, tid);
 896                 break;
 897         default:
 898                 break;
 899         }
 900 }
 901
 902 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 903                                     struct ieee80211_vif *vif,
 904                                     struct ieee80211_ampdu_params *params)
 905 {
 906         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 907         int ret;
 908         bool tx_agg_ref = false;
 909         struct ieee80211_sta *sta = params->sta;
 910         enum ieee80211_ampdu_mlme_action action = params->action;
 911         u16 tid = params->tid;
 912         u16 *ssn = &params->ssn;
 913         u8 buf_size = params->buf_size;
 914         bool amsdu = params->amsdu;
 915         u16 timeout = params->timeout;
 916
 917         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 918                      sta->addr, tid, action);
 919
 920         if (!(mvm->nvm_data->sku_cap_11n_enable))
 921                 return -EACCES;
 922
 923         /* return from D0i3 before starting a new Tx aggregation */
 924         switch (action) {
 925         case IEEE80211_AMPDU_TX_START:
 926         case IEEE80211_AMPDU_TX_STOP_CONT:
 927         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 928         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 929         case IEEE80211_AMPDU_TX_OPERATIONAL:
 930                 /*
 931                  * for tx start, wait synchronously until D0i3 exit to
 932                  * get the correct sequence number for the tid.
 933                  * additionally, some other ampdu actions use direct
 934                  * target access, which is not handled automatically
 935                  * by the trans layer (unlike commands), so wait for
 936                  * d0i3 exit in these cases as well.
 937                  */
 938                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 939                 if (ret)
 940                         return ret;
 941
 942                 tx_agg_ref = true;
 943                 break;
 944         default:
 945                 break;
 946         }
 947
 948         mutex_lock(&mvm->mutex);
 949
 950         switch (action) {
 951         case IEEE80211_AMPDU_RX_START:
 952                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 953                         ret = -EINVAL;
 954                         break;
 955                 }
 956                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 957                                          timeout);
 958                 break;
 959         case IEEE80211_AMPDU_RX_STOP:
 960                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 961                                          timeout);
 962                 break;
 963         case IEEE80211_AMPDU_TX_START:
 964                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 965                         ret = -EINVAL;
 966                         break;
 967                 }
 968                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 969                 break;
 970         case IEEE80211_AMPDU_TX_STOP_CONT:
 971                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 972                 break;
 973         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 974         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 975                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 976                 break;
 977         case IEEE80211_AMPDU_TX_OPERATIONAL:
 978                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 979                                               buf_size, amsdu);
 980                 break;
 981         default:
 982                 WARN_ON_ONCE(1);
 983                 ret = -EINVAL;
 984                 break;
 985         }
 986
 987         if (!ret) {
 988                 u16 rx_ba_ssn = 0;
 989
 990                 if (action == IEEE80211_AMPDU_RX_START)
 991                         rx_ba_ssn = *ssn;
 992
 993                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 994                                             rx_ba_ssn, action);
 995         }
 996         mutex_unlock(&mvm->mutex);
 997
 998         /*
 999          * If the tid is marked as started, we won't use it for offloaded
1000          * traffic on the next D0i3 entry. It's safe to unref.
1001          */
1002         if (tx_agg_ref)
1003                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1004
1005         return ret;
1006 }
1007
1008 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1009                                      struct ieee80211_vif *vif)
1010 {
1011         struct iwl_mvm *mvm = data;
1012         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1013
1014         mvmvif->uploaded = false;
1015         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1016
1017         spin_lock_bh(&mvm->time_event_lock);
1018         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1019         spin_unlock_bh(&mvm->time_event_lock);
1020
1021         mvmvif->phy_ctxt = NULL;
1022         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1023 }
1024
1025 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1026 {
1027         /* clear the D3 reconfig, we only need it to avoid dumping a
1028          * firmware coredump on reconfiguration, we shouldn't do that
1029          * on D3->D0 transition
1030          */
1031         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1032                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1033                 iwl_mvm_fw_error_dump(mvm);
1034         }
1035
1036         /* cleanup all stale references (scan, roc), but keep the
1037          * ucode_down ref until reconfig is complete
1038          */
1039         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1040
1041         iwl_mvm_stop_device(mvm);
1042
1043         mvm->scan_status = 0;
1044         mvm->ps_disabled = false;
1045         mvm->calibrating = false;
1046
1047         /* just in case one was running */
1048         iwl_mvm_cleanup_roc_te(mvm);
1049         ieee80211_remain_on_channel_expired(mvm->hw);
1050
1051         /*
1052          * cleanup all interfaces, even inactive ones, as some might have
1053          * gone down during the HW restart
1054          */
1055         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1056
1057         mvm->p2p_device_vif = NULL;
1058         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1059
1060         iwl_mvm_reset_phy_ctxts(mvm);
1061         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1062         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1063         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1064         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1065         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1066         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1067
1068         ieee80211_wake_queues(mvm->hw);
1069
1070         /* clear any stale d0i3 state */
1071         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1072
1073         mvm->vif_count = 0;
1074         mvm->rx_ba_sessions = 0;
1075         mvm->fw_dbg_conf = FW_DBG_INVALID;
1076
1077         /* keep statistics ticking */
1078         iwl_mvm_accu_radio_stats(mvm);
1079 }
1080
1081 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1082 {
1083         int ret;
1084
1085         lockdep_assert_held(&mvm->mutex);
1086
1087         if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1088                 /*
1089                  * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1090                  * so later code will - from now on - see that we're doing it.
1091                  */
1092                 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1093                 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1094                 /* Clean up some internal and mac80211 state on restart */
1095                 iwl_mvm_restart_cleanup(mvm);
1096         } else {
1097                 /* Hold the reference to prevent runtime suspend while
1098                  * the start procedure runs.  It's a bit confusing
1099                  * that the UCODE_DOWN reference is taken, but it just
1100                  * means "UCODE is not UP yet". ( TODO: rename this
1101                  * reference).
1102                  */
1103                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1104         }
1105         ret = iwl_mvm_up(mvm);
1106
1107         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1108                 /* Something went wrong - we need to finish some cleanup
1109                  * that normally iwl_mvm_mac_restart_complete() below
1110                  * would do.
1111                  */
1112                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1113                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1114         }
1115
1116         return ret;
1117 }
1118
1119 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1120 {
1121         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1122         int ret;
1123
1124         /* Some hw restart cleanups must not hold the mutex */
1125         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1126                 /*
1127                  * Make sure we are out of d0i3. This is needed
1128                  * to make sure the reference accounting is correct
1129                  * (and there is no stale d0i3_exit_work).
1130                  */
1131                 wait_event_timeout(mvm->d0i3_exit_waitq,
1132                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1133                                              &mvm->status),
1134                                    HZ);
1135         }
1136
1137         mutex_lock(&mvm->mutex);
1138         ret = __iwl_mvm_mac_start(mvm);
1139         mutex_unlock(&mvm->mutex);
1140
1141         return ret;
1142 }
1143
1144 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1145 {
1146         int ret;
1147
1148         mutex_lock(&mvm->mutex);
1149
1150         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1151         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1152         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1153         if (ret)
1154                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1155                         ret);
1156
1157         /* allow transport/FW low power modes */
1158         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1159
1160         /*
1161          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1162          * of packets the FW sent out, so we must reconnect.
1163          */
1164         iwl_mvm_teardown_tdls_peers(mvm);
1165
1166         mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1170 {
1171         if (iwl_mvm_is_d0i3_supported(mvm) &&
1172             iwl_mvm_enter_d0i3_on_suspend(mvm))
1173                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1174                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1175                                                         &mvm->status),
1176                                               HZ),
1177                           "D0i3 exit on resume timed out\n");
1178 }
1179
1180 static void
1181 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1182                               enum ieee80211_reconfig_type reconfig_type)
1183 {
1184         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1185
1186         switch (reconfig_type) {
1187         case IEEE80211_RECONFIG_TYPE_RESTART:
1188                 iwl_mvm_restart_complete(mvm);
1189                 break;
1190         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1191                 iwl_mvm_resume_complete(mvm);
1192                 break;
1193         }
1194 }
1195
1196 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1197 {
1198         lockdep_assert_held(&mvm->mutex);
1199
1200         /* firmware counters are obviously reset now, but we shouldn't
1201          * partially track so also clear the fw_reset_accu counters.
1202          */
1203         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1204
1205         /* async_handlers_wk is now blocked */
1206
1207         /*
1208          * The work item could be running or queued if the
1209          * ROC time event stops just as we get here.
1210          */
1211         flush_work(&mvm->roc_done_wk);
1212
1213         iwl_mvm_stop_device(mvm);
1214
1215         iwl_mvm_async_handlers_purge(mvm);
1216         /* async_handlers_list is empty and will stay empty: HW is stopped */
1217
1218         /* the fw is stopped, the aux sta is dead: clean up driver state */
1219         iwl_mvm_del_aux_sta(mvm);
1220
1221         /*
1222          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1223          * won't be called in this case).
1224          * But make sure to cleanup interfaces that have gone down before/during
1225          * HW restart was requested.
1226          */
1227         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1228                 ieee80211_iterate_interfaces(mvm->hw, 0,
1229                                              iwl_mvm_cleanup_iterator, mvm);
1230
1231         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1232          * make sure there's nothing left there and warn if any is found.
1233          */
1234         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1235                 int i;
1236
1237                 for (i = 0; i < mvm->max_scans; i++) {
1238                         if (WARN_ONCE(mvm->scan_uid_status[i],
1239                                       "UMAC scan UID %d status was not cleaned\n",
1240                                       i))
1241                                 mvm->scan_uid_status[i] = 0;
1242                 }
1243         }
1244 }
1245
1246 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1247 {
1248         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1249
1250         flush_work(&mvm->d0i3_exit_work);
1251         flush_work(&mvm->async_handlers_wk);
1252         flush_work(&mvm->add_stream_wk);
1253
1254         /*
1255          * Lock and clear the firmware running bit here already, so that
1256          * new commands coming in elsewhere, e.g. from debugfs, will not
1257          * be able to proceed. This is important here because one of those
1258          * debugfs files causes the fw_dump_wk to be triggered, and if we
1259          * don't stop debugfs accesses before canceling that it could be
1260          * retriggered after we flush it but before we've cleared the bit.
1261          */
1262         clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1263
1264         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1265         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1266         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1267         iwl_mvm_free_fw_dump_desc(mvm);
1268
1269         mutex_lock(&mvm->mutex);
1270         __iwl_mvm_mac_stop(mvm);
1271         mutex_unlock(&mvm->mutex);
1272
1273         /*
1274          * The worker might have been waiting for the mutex, let it run and
1275          * discover that its list is now empty.
1276          */
1277         cancel_work_sync(&mvm->async_handlers_wk);
1278 }
1279
1280 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1281 {
1282         u16 i;
1283
1284         lockdep_assert_held(&mvm->mutex);
1285
1286         for (i = 0; i < NUM_PHY_CTX; i++)
1287                 if (!mvm->phy_ctxts[i].ref)
1288                         return &mvm->phy_ctxts[i];
1289
1290         IWL_ERR(mvm, "No available PHY context\n");
1291         return NULL;
1292 }
1293
1294 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1295                                 s16 tx_power)
1296 {
1297         struct iwl_dev_tx_power_cmd cmd = {
1298                 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1299                 .v3.mac_context_id =
1300                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1301                 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1302         };
1303         int len = sizeof(cmd);
1304
1305         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1306                 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1307
1308         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1309                 len = sizeof(cmd.v3);
1310
1311         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1312 }
1313
1314 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1315                                      struct ieee80211_vif *vif)
1316 {
1317         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1318         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1319         int ret;
1320
1321         mvmvif->mvm = mvm;
1322
1323         /*
1324          * make sure D0i3 exit is completed, otherwise a target access
1325          * during tx queue configuration could be done when still in
1326          * D0i3 state.
1327          */
1328         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1329         if (ret)
1330                 return ret;
1331
1332         /*
1333          * Not much to do here. The stack will not allow interface
1334          * types or combinations that we didn't advertise, so we
1335          * don't really have to check the types.
1336          */
1337
1338         mutex_lock(&mvm->mutex);
1339
1340         /* make sure that beacon statistics don't go backwards with FW reset */
1341         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1342                 mvmvif->beacon_stats.accu_num_beacons +=
1343                         mvmvif->beacon_stats.num_beacons;
1344
1345         /* Allocate resources for the MAC context, and add it to the fw  */
1346         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1347         if (ret)
1348                 goto out_unlock;
1349
1350         /* Counting number of interfaces is needed for legacy PM */
1351         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1352                 mvm->vif_count++;
1353
1354         /*
1355          * The AP binding flow can be done only after the beacon
1356          * template is configured (which happens only in the mac80211
1357          * start_ap() flow), and adding the broadcast station can happen
1358          * only after the binding.
1359          * In addition, since modifying the MAC before adding a bcast
1360          * station is not allowed by the FW, delay the adding of MAC context to
1361          * the point where we can also add the bcast station.
1362          * In short: there's not much we can do at this point, other than
1363          * allocating resources :)
1364          */
1365         if (vif->type == NL80211_IFTYPE_AP ||
1366             vif->type == NL80211_IFTYPE_ADHOC) {
1367                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1368                 if (ret) {
1369                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1370                         goto out_release;
1371                 }
1372
1373                 if (iwl_mvm_is_dqa_supported(mvm)) {
1374                         /*
1375                          * Only queue for this station is the mcast queue,
1376                          * which shouldn't be in TFD mask anyway
1377                          */
1378                         ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1379                                                        0, vif->type,
1380                                                        IWL_STA_MULTICAST);
1381                         if (ret)
1382                                 goto out_release;
1383                 }
1384
1385                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1386                 goto out_unlock;
1387         }
1388
1389         mvmvif->features |= hw->netdev_features;
1390
1391         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1392         if (ret)
1393                 goto out_release;
1394
1395         ret = iwl_mvm_power_update_mac(mvm);
1396         if (ret)
1397                 goto out_remove_mac;
1398
1399         /* beacon filtering */
1400         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1401         if (ret)
1402                 goto out_remove_mac;
1403
1404         if (!mvm->bf_allowed_vif &&
1405             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1406                 mvm->bf_allowed_vif = mvmvif;
1407                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1408                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1409         }
1410
1411         /*
1412          * P2P_DEVICE interface does not have a channel context assigned to it,
1413          * so a dedicated PHY context is allocated to it and the corresponding
1414          * MAC context is bound to it at this stage.
1415          */
1416         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1417
1418                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1419                 if (!mvmvif->phy_ctxt) {
1420                         ret = -ENOSPC;
1421                         goto out_free_bf;
1422                 }
1423
1424                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1425                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1426                 if (ret)
1427                         goto out_unref_phy;
1428
1429                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1430                 if (ret)
1431                         goto out_unbind;
1432
1433                 /* Save a pointer to p2p device vif, so it can later be used to
1434                  * update the p2p device MAC when a GO is started/stopped */
1435                 mvm->p2p_device_vif = vif;
1436         }
1437
1438         iwl_mvm_vif_dbgfs_register(mvm, vif);
1439         goto out_unlock;
1440
1441  out_unbind:
1442         iwl_mvm_binding_remove_vif(mvm, vif);
1443  out_unref_phy:
1444         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1445  out_free_bf:
1446         if (mvm->bf_allowed_vif == mvmvif) {
1447                 mvm->bf_allowed_vif = NULL;
1448                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1449                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1450         }
1451  out_remove_mac:
1452         mvmvif->phy_ctxt = NULL;
1453         iwl_mvm_mac_ctxt_remove(mvm, vif);
1454  out_release:
1455         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1456                 mvm->vif_count--;
1457
1458         iwl_mvm_mac_ctxt_release(mvm, vif);
1459  out_unlock:
1460         mutex_unlock(&mvm->mutex);
1461
1462         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1463
1464         return ret;
1465 }
1466
1467 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1468                                         struct ieee80211_vif *vif)
1469 {
1470         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1471
1472         if (tfd_msk && !iwl_mvm_is_dqa_supported(mvm)) {
1473                 /*
1474                  * mac80211 first removes all the stations of the vif and
1475                  * then removes the vif. When it removes a station it also
1476                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1477                  * of all the stations of this vif are closed, and the queues
1478                  * of these AMPDU sessions are properly closed.
1479                  * We still need to take care of the shared queues of the vif.
1480                  * Flush them here.
1481                  * For DQA mode there is no need - broacast and multicast queue
1482                  * are flushed separately.
1483                  */
1484                 mutex_lock(&mvm->mutex);
1485                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1486                 mutex_unlock(&mvm->mutex);
1487
1488                 /*
1489                  * There are transports that buffer a few frames in the host.
1490                  * For these, the flush above isn't enough since while we were
1491                  * flushing, the transport might have sent more frames to the
1492                  * device. To solve this, wait here until the transport is
1493                  * empty. Technically, this could have replaced the flush
1494                  * above, but flush is much faster than draining. So flush
1495                  * first, and drain to make sure we have no frames in the
1496                  * transport anymore.
1497                  * If a station still had frames on the shared queues, it is
1498                  * already marked as draining, so to complete the draining, we
1499                  * just need to wait until the transport is empty.
1500                  */
1501                 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
1502         }
1503
1504         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1505                 /*
1506                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1507                  * We assume here that all the packets sent to the OFFCHANNEL
1508                  * queue are sent in ROC session.
1509                  */
1510                 flush_work(&mvm->roc_done_wk);
1511         } else {
1512                 /*
1513                  * By now, all the AC queues are empty. The AGG queues are
1514                  * empty too. We already got all the Tx responses for all the
1515                  * packets in the queues. The drain work can have been
1516                  * triggered. Flush it.
1517                  */
1518                 flush_work(&mvm->sta_drained_wk);
1519         }
1520 }
1521
1522 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1523                                          struct ieee80211_vif *vif)
1524 {
1525         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1526         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1527
1528         iwl_mvm_prepare_mac_removal(mvm, vif);
1529
1530         mutex_lock(&mvm->mutex);
1531
1532         if (mvm->bf_allowed_vif == mvmvif) {
1533                 mvm->bf_allowed_vif = NULL;
1534                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1535                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1536         }
1537
1538         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1539
1540         /*
1541          * For AP/GO interface, the tear down of the resources allocated to the
1542          * interface is be handled as part of the stop_ap flow.
1543          */
1544         if (vif->type == NL80211_IFTYPE_AP ||
1545             vif->type == NL80211_IFTYPE_ADHOC) {
1546 #ifdef CONFIG_NL80211_TESTMODE
1547                 if (vif == mvm->noa_vif) {
1548                         mvm->noa_vif = NULL;
1549                         mvm->noa_duration = 0;
1550                 }
1551 #endif
1552                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1553                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1554                 goto out_release;
1555         }
1556
1557         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1558                 mvm->p2p_device_vif = NULL;
1559                 iwl_mvm_rm_bcast_sta(mvm, vif);
1560                 iwl_mvm_binding_remove_vif(mvm, vif);
1561                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1562                 mvmvif->phy_ctxt = NULL;
1563         }
1564
1565         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1566                 mvm->vif_count--;
1567
1568         iwl_mvm_power_update_mac(mvm);
1569         iwl_mvm_mac_ctxt_remove(mvm, vif);
1570
1571 out_release:
1572         iwl_mvm_mac_ctxt_release(mvm, vif);
1573         mutex_unlock(&mvm->mutex);
1574 }
1575
1576 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1577 {
1578         return 0;
1579 }
1580
1581 struct iwl_mvm_mc_iter_data {
1582         struct iwl_mvm *mvm;
1583         int port_id;
1584 };
1585
1586 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1587                                       struct ieee80211_vif *vif)
1588 {
1589         struct iwl_mvm_mc_iter_data *data = _data;
1590         struct iwl_mvm *mvm = data->mvm;
1591         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1592         int ret, len;
1593
1594         /* if we don't have free ports, mcast frames will be dropped */
1595         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1596                 return;
1597
1598         if (vif->type != NL80211_IFTYPE_STATION ||
1599             !vif->bss_conf.assoc)
1600                 return;
1601
1602         cmd->port_id = data->port_id++;
1603         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1604         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1605
1606         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1607         if (ret)
1608                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1609 }
1610
1611 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1612 {
1613         struct iwl_mvm_mc_iter_data iter_data = {
1614                 .mvm = mvm,
1615         };
1616
1617         lockdep_assert_held(&mvm->mutex);
1618
1619         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1620                 return;
1621
1622         ieee80211_iterate_active_interfaces_atomic(
1623                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1624                 iwl_mvm_mc_iface_iterator, &iter_data);
1625 }
1626
1627 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1628                                      struct netdev_hw_addr_list *mc_list)
1629 {
1630         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1631         struct iwl_mcast_filter_cmd *cmd;
1632         struct netdev_hw_addr *addr;
1633         int addr_count;
1634         bool pass_all;
1635         int len;
1636
1637         addr_count = netdev_hw_addr_list_count(mc_list);
1638         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1639                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1640         if (pass_all)
1641                 addr_count = 0;
1642
1643         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1644         cmd = kzalloc(len, GFP_ATOMIC);
1645         if (!cmd)
1646                 return 0;
1647
1648         if (pass_all) {
1649                 cmd->pass_all = 1;
1650                 return (u64)(unsigned long)cmd;
1651         }
1652
1653         netdev_hw_addr_list_for_each(addr, mc_list) {
1654                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1655                                    cmd->count, addr->addr);
1656                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1657                        addr->addr, ETH_ALEN);
1658                 cmd->count++;
1659         }
1660
1661         return (u64)(unsigned long)cmd;
1662 }
1663
1664 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1665                                      unsigned int changed_flags,
1666                                      unsigned int *total_flags,
1667                                      u64 multicast)
1668 {
1669         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1670         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1671
1672         mutex_lock(&mvm->mutex);
1673
1674         /* replace previous configuration */
1675         kfree(mvm->mcast_filter_cmd);
1676         mvm->mcast_filter_cmd = cmd;
1677
1678         if (!cmd)
1679                 goto out;
1680
1681         iwl_mvm_recalc_multicast(mvm);
1682 out:
1683         mutex_unlock(&mvm->mutex);
1684         *total_flags = 0;
1685 }
1686
1687 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1688                                         struct ieee80211_vif *vif,
1689                                         unsigned int filter_flags,
1690                                         unsigned int changed_flags)
1691 {
1692         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1693
1694         /* We support only filter for probe requests */
1695         if (!(changed_flags & FIF_PROBE_REQ))
1696                 return;
1697
1698         /* Supported only for p2p client interfaces */
1699         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1700             !vif->p2p)
1701                 return;
1702
1703         mutex_lock(&mvm->mutex);
1704         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1705         mutex_unlock(&mvm->mutex);
1706 }
1707
1708 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1709 struct iwl_bcast_iter_data {
1710         struct iwl_mvm *mvm;
1711         struct iwl_bcast_filter_cmd *cmd;
1712         u8 current_filter;
1713 };
1714
1715 static void
1716 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1717                          const struct iwl_fw_bcast_filter *in_filter,
1718                          struct iwl_fw_bcast_filter *out_filter)
1719 {
1720         struct iwl_fw_bcast_filter_attr *attr;
1721         int i;
1722
1723         memcpy(out_filter, in_filter, sizeof(*out_filter));
1724
1725         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1726                 attr = &out_filter->attrs[i];
1727
1728                 if (!attr->mask)
1729                         break;
1730
1731                 switch (attr->reserved1) {
1732                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1733                         if (vif->bss_conf.arp_addr_cnt != 1) {
1734                                 attr->mask = 0;
1735                                 continue;
1736                         }
1737
1738                         attr->val = vif->bss_conf.arp_addr_list[0];
1739                         break;
1740                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1741                         attr->val = *(__be32 *)&vif->addr[2];
1742                         break;
1743                 default:
1744                         break;
1745                 }
1746                 attr->reserved1 = 0;
1747                 out_filter->num_attrs++;
1748         }
1749 }
1750
1751 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1752                                           struct ieee80211_vif *vif)
1753 {
1754         struct iwl_bcast_iter_data *data = _data;
1755         struct iwl_mvm *mvm = data->mvm;
1756         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1757         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1758         struct iwl_fw_bcast_mac *bcast_mac;
1759         int i;
1760
1761         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1762                 return;
1763
1764         bcast_mac = &cmd->macs[mvmvif->id];
1765
1766         /*
1767          * enable filtering only for associated stations, but not for P2P
1768          * Clients
1769          */
1770         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1771             !vif->bss_conf.assoc)
1772                 return;
1773
1774         bcast_mac->default_discard = 1;
1775
1776         /* copy all configured filters */
1777         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1778                 /*
1779                  * Make sure we don't exceed our filters limit.
1780                  * if there is still a valid filter to be configured,
1781                  * be on the safe side and just allow bcast for this mac.
1782                  */
1783                 if (WARN_ON_ONCE(data->current_filter >=
1784                                  ARRAY_SIZE(cmd->filters))) {
1785                         bcast_mac->default_discard = 0;
1786                         bcast_mac->attached_filters = 0;
1787                         break;
1788                 }
1789
1790                 iwl_mvm_set_bcast_filter(vif,
1791                                          &mvm->bcast_filters[i],
1792                                          &cmd->filters[data->current_filter]);
1793
1794                 /* skip current filter if it contains no attributes */
1795                 if (!cmd->filters[data->current_filter].num_attrs)
1796                         continue;
1797
1798                 /* attach the filter to current mac */
1799                 bcast_mac->attached_filters |=
1800                                 cpu_to_le16(BIT(data->current_filter));
1801
1802                 data->current_filter++;
1803         }
1804 }
1805
1806 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1807                                     struct iwl_bcast_filter_cmd *cmd)
1808 {
1809         struct iwl_bcast_iter_data iter_data = {
1810                 .mvm = mvm,
1811                 .cmd = cmd,
1812         };
1813
1814         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1815                 return false;
1816
1817         memset(cmd, 0, sizeof(*cmd));
1818         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1819         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1820
1821 #ifdef CONFIG_IWLWIFI_DEBUGFS
1822         /* use debugfs filters/macs if override is configured */
1823         if (mvm->dbgfs_bcast_filtering.override) {
1824                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1825                        sizeof(cmd->filters));
1826                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1827                        sizeof(cmd->macs));
1828                 return true;
1829         }
1830 #endif
1831
1832         /* if no filters are configured, do nothing */
1833         if (!mvm->bcast_filters)
1834                 return false;
1835
1836         /* configure and attach these filters for each associated sta vif */
1837         ieee80211_iterate_active_interfaces(
1838                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1839                 iwl_mvm_bcast_filter_iterator, &iter_data);
1840
1841         return true;
1842 }
1843
1844 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1845 {
1846         struct iwl_bcast_filter_cmd cmd;
1847
1848         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1849                 return 0;
1850
1851         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1852                 return 0;
1853
1854         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1855                                     sizeof(cmd), &cmd);
1856 }
1857 #else
1858 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1859 {
1860         return 0;
1861 }
1862 #endif
1863
1864 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1865                                     struct ieee80211_vif *vif)
1866 {
1867         struct iwl_mu_group_mgmt_cmd cmd = {};
1868
1869         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1870                WLAN_MEMBERSHIP_LEN);
1871         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1872                WLAN_USER_POSITION_LEN);
1873
1874         return iwl_mvm_send_cmd_pdu(mvm,
1875                                     WIDE_ID(DATA_PATH_GROUP,
1876                                             UPDATE_MU_GROUPS_CMD),
1877                                     0, sizeof(cmd), &cmd);
1878 }
1879
1880 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1881                                            struct ieee80211_vif *vif)
1882 {
1883         if (vif->mu_mimo_owner) {
1884                 struct iwl_mu_group_mgmt_notif *notif = _data;
1885
1886                 /*
1887                  * MU-MIMO Group Id action frame is little endian. We treat
1888                  * the data received from firmware as if it came from the
1889                  * action frame, so no conversion is needed.
1890                  */
1891                 ieee80211_update_mu_groups(vif,
1892                                            (u8 *)&notif->membership_status,
1893                                            (u8 *)&notif->user_position);
1894         }
1895 }
1896
1897 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1898                                struct iwl_rx_cmd_buffer *rxb)
1899 {
1900         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1901         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1902
1903         ieee80211_iterate_active_interfaces_atomic(
1904                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1905                         iwl_mvm_mu_mimo_iface_iterator, notif);
1906 }
1907
1908 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1909                                              struct ieee80211_vif *vif,
1910                                              struct ieee80211_bss_conf *bss_conf,
1911                                              u32 changes)
1912 {
1913         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1914         int ret;
1915
1916         /*
1917          * Re-calculate the tsf id, as the master-slave relations depend on the
1918          * beacon interval, which was not known when the station interface was
1919          * added.
1920          */
1921         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1922                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1923
1924         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1925             mvmvif->lqm_active)
1926                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1927                                      0, 0);
1928
1929         /*
1930          * If we're not associated yet, take the (new) BSSID before associating
1931          * so the firmware knows. If we're already associated, then use the old
1932          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1933          * branch for disassociation below.
1934          */
1935         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1936                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1937
1938         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1939         if (ret)
1940                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1941
1942         /* after sending it once, adopt mac80211 data */
1943         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1944         mvmvif->associated = bss_conf->assoc;
1945
1946         if (changes & BSS_CHANGED_ASSOC) {
1947                 if (bss_conf->assoc) {
1948                         /* clear statistics to get clean beacon counter */
1949                         iwl_mvm_request_statistics(mvm, true);
1950                         memset(&mvmvif->beacon_stats, 0,
1951                                sizeof(mvmvif->beacon_stats));
1952
1953                         /* add quota for this interface */
1954                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1955                         if (ret) {
1956                                 IWL_ERR(mvm, "failed to update quotas\n");
1957                                 return;
1958                         }
1959
1960                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1961                                      &mvm->status)) {
1962                                 /*
1963                                  * If we're restarting then the firmware will
1964                                  * obviously have lost synchronisation with
1965                                  * the AP. It will attempt to synchronise by
1966                                  * itself, but we can make it more reliable by
1967                                  * scheduling a session protection time event.
1968                                  *
1969                                  * The firmware needs to receive a beacon to
1970                                  * catch up with synchronisation, use 110% of
1971                                  * the beacon interval.
1972                                  *
1973                                  * Set a large maximum delay to allow for more
1974                                  * than a single interface.
1975                                  */
1976                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1977                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1978                                                         5 * dur, false);
1979                         }
1980
1981                         iwl_mvm_sf_update(mvm, vif, false);
1982                         iwl_mvm_power_vif_assoc(mvm, vif);
1983                         if (vif->p2p) {
1984                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1985                                 iwl_mvm_update_smps(mvm, vif,
1986                                                     IWL_MVM_SMPS_REQ_PROT,
1987                                                     IEEE80211_SMPS_DYNAMIC);
1988                         }
1989                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1990                         /*
1991                          * If update fails - SF might be running in associated
1992                          * mode while disassociated - which is forbidden.
1993                          */
1994                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1995                                   "Failed to update SF upon disassociation\n");
1996
1997                         /*
1998                          * If we get an assert during the connection (after the
1999                          * station has been added, but before the vif is set
2000                          * to associated), mac80211 will re-add the station and
2001                          * then configure the vif. Since the vif is not
2002                          * associated, we would remove the station here and
2003                          * this would fail the recovery.
2004                          */
2005                         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2006                                       &mvm->status)) {
2007                                 /*
2008                                  * Remove AP station now that
2009                                  * the MAC is unassoc
2010                                  */
2011                                 ret = iwl_mvm_rm_sta_id(mvm, vif,
2012                                                         mvmvif->ap_sta_id);
2013                                 if (ret)
2014                                         IWL_ERR(mvm,
2015                                                 "failed to remove AP station\n");
2016
2017                                 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2018                                         mvm->d0i3_ap_sta_id =
2019                                                 IWL_MVM_INVALID_STA;
2020                                 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2021                         }
2022
2023                         /* remove quota for this interface */
2024                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2025                         if (ret)
2026                                 IWL_ERR(mvm, "failed to update quotas\n");
2027
2028                         if (vif->p2p)
2029                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2030
2031                         /* this will take the cleared BSSID from bss_conf */
2032                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2033                         if (ret)
2034                                 IWL_ERR(mvm,
2035                                         "failed to update MAC %pM (clear after unassoc)\n",
2036                                         vif->addr);
2037                 }
2038
2039                 /*
2040                  * The firmware tracks the MU-MIMO group on its own.
2041                  * However, on HW restart we should restore this data.
2042                  */
2043                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2044                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2045                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2046                         if (ret)
2047                                 IWL_ERR(mvm,
2048                                         "failed to update VHT MU_MIMO groups\n");
2049                 }
2050
2051                 iwl_mvm_recalc_multicast(mvm);
2052                 iwl_mvm_configure_bcast_filter(mvm);
2053
2054                 /* reset rssi values */
2055                 mvmvif->bf_data.ave_beacon_signal = 0;
2056
2057                 iwl_mvm_bt_coex_vif_change(mvm);
2058                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2059                                     IEEE80211_SMPS_AUTOMATIC);
2060                 if (fw_has_capa(&mvm->fw->ucode_capa,
2061                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2062                         iwl_mvm_config_scan(mvm);
2063         }
2064
2065         if (changes & BSS_CHANGED_BEACON_INFO) {
2066                 /*
2067                  * We received a beacon from the associated AP so
2068                  * remove the session protection.
2069                  */
2070                 iwl_mvm_remove_time_event(mvm, mvmvif,
2071                                           &mvmvif->time_event_data);
2072
2073                 iwl_mvm_sf_update(mvm, vif, false);
2074                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2075         }
2076
2077         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2078                        /*
2079                         * Send power command on every beacon change,
2080                         * because we may have not enabled beacon abort yet.
2081                         */
2082                        BSS_CHANGED_BEACON_INFO)) {
2083                 ret = iwl_mvm_power_update_mac(mvm);
2084                 if (ret)
2085                         IWL_ERR(mvm, "failed to update power mode\n");
2086         }
2087
2088         if (changes & BSS_CHANGED_TXPOWER) {
2089                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2090                                 bss_conf->txpower);
2091                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2092         }
2093
2094         if (changes & BSS_CHANGED_CQM) {
2095                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2096                 /* reset cqm events tracking */
2097                 mvmvif->bf_data.last_cqm_event = 0;
2098                 if (mvmvif->bf_data.bf_enabled) {
2099                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2100                         if (ret)
2101                                 IWL_ERR(mvm,
2102                                         "failed to update CQM thresholds\n");
2103                 }
2104         }
2105
2106         if (changes & BSS_CHANGED_ARP_FILTER) {
2107                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2108                 iwl_mvm_configure_bcast_filter(mvm);
2109         }
2110 }
2111
2112 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2113                                  struct ieee80211_vif *vif)
2114 {
2115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2116         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2117         int ret;
2118
2119         /*
2120          * iwl_mvm_mac_ctxt_add() might read directly from the device
2121          * (the system time), so make sure it is available.
2122          */
2123         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2124         if (ret)
2125                 return ret;
2126
2127         mutex_lock(&mvm->mutex);
2128
2129         /* Send the beacon template */
2130         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2131         if (ret)
2132                 goto out_unlock;
2133
2134         /*
2135          * Re-calculate the tsf id, as the master-slave relations depend on the
2136          * beacon interval, which was not known when the AP interface was added.
2137          */
2138         if (vif->type == NL80211_IFTYPE_AP)
2139                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2140
2141         mvmvif->ap_assoc_sta_count = 0;
2142
2143         /* Add the mac context */
2144         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2145         if (ret)
2146                 goto out_unlock;
2147
2148         /* Perform the binding */
2149         ret = iwl_mvm_binding_add_vif(mvm, vif);
2150         if (ret)
2151                 goto out_remove;
2152
2153         ret = iwl_mvm_add_mcast_sta(mvm, vif);
2154         if (ret)
2155                 goto out_unbind;
2156
2157         /* Send the bcast station. At this stage the TBTT and DTIM time events
2158          * are added and applied to the scheduler */
2159         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2160         if (ret)
2161                 goto out_rm_mcast;
2162
2163         /* must be set before quota calculations */
2164         mvmvif->ap_ibss_active = true;
2165
2166         /* power updated needs to be done before quotas */
2167         iwl_mvm_power_update_mac(mvm);
2168
2169         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2170         if (ret)
2171                 goto out_quota_failed;
2172
2173         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2174         if (vif->p2p && mvm->p2p_device_vif)
2175                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2176
2177         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2178
2179         iwl_mvm_bt_coex_vif_change(mvm);
2180
2181         /* we don't support TDLS during DCM */
2182         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2183                 iwl_mvm_teardown_tdls_peers(mvm);
2184
2185         goto out_unlock;
2186
2187 out_quota_failed:
2188         iwl_mvm_power_update_mac(mvm);
2189         mvmvif->ap_ibss_active = false;
2190         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2191 out_rm_mcast:
2192         iwl_mvm_rm_mcast_sta(mvm, vif);
2193 out_unbind:
2194         iwl_mvm_binding_remove_vif(mvm, vif);
2195 out_remove:
2196         iwl_mvm_mac_ctxt_remove(mvm, vif);
2197 out_unlock:
2198         mutex_unlock(&mvm->mutex);
2199         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2200         return ret;
2201 }
2202
2203 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2204                                  struct ieee80211_vif *vif)
2205 {
2206         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2208
2209         iwl_mvm_prepare_mac_removal(mvm, vif);
2210
2211         mutex_lock(&mvm->mutex);
2212
2213         /* Handle AP stop while in CSA */
2214         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2215                 iwl_mvm_remove_time_event(mvm, mvmvif,
2216                                           &mvmvif->time_event_data);
2217                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2218                 mvmvif->csa_countdown = false;
2219         }
2220
2221         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2222                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2223                 mvm->csa_tx_block_bcn_timeout = 0;
2224         }
2225
2226         mvmvif->ap_ibss_active = false;
2227         mvm->ap_last_beacon_gp2 = 0;
2228
2229         iwl_mvm_bt_coex_vif_change(mvm);
2230
2231         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2232
2233         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2234         if (vif->p2p && mvm->p2p_device_vif)
2235                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2236
2237         iwl_mvm_update_quotas(mvm, false, NULL);
2238
2239         /*
2240          * This is not very nice, but the simplest:
2241          * For older FWs removing the mcast sta before the bcast station may
2242          * cause assert 0x2b00.
2243          * This is fixed in later FW (which will stop beaconing when removing
2244          * bcast station).
2245          * So make the order of removal depend on the TLV
2246          */
2247         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2248                 iwl_mvm_rm_mcast_sta(mvm, vif);
2249         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2250         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2251                 iwl_mvm_rm_mcast_sta(mvm, vif);
2252         iwl_mvm_binding_remove_vif(mvm, vif);
2253
2254         iwl_mvm_power_update_mac(mvm);
2255
2256         iwl_mvm_mac_ctxt_remove(mvm, vif);
2257
2258         mutex_unlock(&mvm->mutex);
2259 }
2260
2261 static void
2262 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2263                                  struct ieee80211_vif *vif,
2264                                  struct ieee80211_bss_conf *bss_conf,
2265                                  u32 changes)
2266 {
2267         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2268
2269         /* Changes will be applied when the AP/IBSS is started */
2270         if (!mvmvif->ap_ibss_active)
2271                 return;
2272
2273         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2274                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2275             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2276                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2277
2278         /* Need to send a new beacon template to the FW */
2279         if (changes & BSS_CHANGED_BEACON &&
2280             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2281                 IWL_WARN(mvm, "Failed updating beacon data\n");
2282
2283         if (changes & BSS_CHANGED_TXPOWER) {
2284                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2285                                 bss_conf->txpower);
2286                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2287         }
2288 }
2289
2290 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2291                                      struct ieee80211_vif *vif,
2292                                      struct ieee80211_bss_conf *bss_conf,
2293                                      u32 changes)
2294 {
2295         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2296
2297         /*
2298          * iwl_mvm_bss_info_changed_station() might call
2299          * iwl_mvm_protect_session(), which reads directly from
2300          * the device (the system time), so make sure it is available.
2301          */
2302         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2303                 return;
2304
2305         mutex_lock(&mvm->mutex);
2306
2307         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2308                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2309
2310         switch (vif->type) {
2311         case NL80211_IFTYPE_STATION:
2312                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2313                 break;
2314         case NL80211_IFTYPE_AP:
2315         case NL80211_IFTYPE_ADHOC:
2316                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2317                 break;
2318         case NL80211_IFTYPE_MONITOR:
2319                 if (changes & BSS_CHANGED_MU_GROUPS)
2320                         iwl_mvm_update_mu_groups(mvm, vif);
2321                 break;
2322         default:
2323                 /* shouldn't happen */
2324                 WARN_ON_ONCE(1);
2325         }
2326
2327         mutex_unlock(&mvm->mutex);
2328         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2329 }
2330
2331 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2332                                struct ieee80211_vif *vif,
2333                                struct ieee80211_scan_request *hw_req)
2334 {
2335         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2336         int ret;
2337
2338         if (hw_req->req.n_channels == 0 ||
2339             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2340                 return -EINVAL;
2341
2342         mutex_lock(&mvm->mutex);
2343         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2344         mutex_unlock(&mvm->mutex);
2345
2346         return ret;
2347 }
2348
2349 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2350                                        struct ieee80211_vif *vif)
2351 {
2352         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2353
2354         mutex_lock(&mvm->mutex);
2355
2356         /* Due to a race condition, it's possible that mac80211 asks
2357          * us to stop a hw_scan when it's already stopped.  This can
2358          * happen, for instance, if we stopped the scan ourselves,
2359          * called ieee80211_scan_completed() and the userspace called
2360          * cancel scan scan before ieee80211_scan_work() could run.
2361          * To handle that, simply return if the scan is not running.
2362         */
2363         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2364                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2365
2366         mutex_unlock(&mvm->mutex);
2367 }
2368
2369 static void
2370 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2371                                   struct ieee80211_sta *sta, u16 tids,
2372                                   int num_frames,
2373                                   enum ieee80211_frame_release_type reason,
2374                                   bool more_data)
2375 {
2376         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2377
2378         /* Called when we need to transmit (a) frame(s) from mac80211 */
2379
2380         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2381                                           tids, more_data, false);
2382 }
2383
2384 static void
2385 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2386                                     struct ieee80211_sta *sta, u16 tids,
2387                                     int num_frames,
2388                                     enum ieee80211_frame_release_type reason,
2389                                     bool more_data)
2390 {
2391         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2392
2393         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2394
2395         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2396                                           tids, more_data, true);
2397 }
2398
2399 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2400                                      enum sta_notify_cmd cmd,
2401                                      struct ieee80211_sta *sta)
2402 {
2403         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2404         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2405         unsigned long txqs = 0, tids = 0;
2406         int tid;
2407
2408         spin_lock_bh(&mvmsta->lock);
2409         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2410                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2411
2412                 if (!iwl_mvm_is_dqa_supported(mvm) &&
2413                     tid_data->state != IWL_AGG_ON &&
2414                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2415                         continue;
2416
2417                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2418                         continue;
2419
2420                 __set_bit(tid_data->txq_id, &txqs);
2421
2422                 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2423                         continue;
2424
2425                 __set_bit(tid, &tids);
2426         }
2427
2428         switch (cmd) {
2429         case STA_NOTIFY_SLEEP:
2430                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2431                         ieee80211_sta_block_awake(hw, sta, true);
2432
2433                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2434                         ieee80211_sta_set_buffered(sta, tid, true);
2435
2436                 if (txqs)
2437                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2438                 /*
2439                  * The fw updates the STA to be asleep. Tx packets on the Tx
2440                  * queues to this station will not be transmitted. The fw will
2441                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2442                  */
2443                 break;
2444         case STA_NOTIFY_AWAKE:
2445                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2446                         break;
2447
2448                 if (txqs)
2449                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2450                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2451                 break;
2452         default:
2453                 break;
2454         }
2455         spin_unlock_bh(&mvmsta->lock);
2456 }
2457
2458 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2459                                    struct ieee80211_vif *vif,
2460                                    enum sta_notify_cmd cmd,
2461                                    struct ieee80211_sta *sta)
2462 {
2463         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2464 }
2465
2466 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2467 {
2468         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2469         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2470         struct ieee80211_sta *sta;
2471         struct iwl_mvm_sta *mvmsta;
2472         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2473
2474         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2475                 return;
2476
2477         rcu_read_lock();
2478         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2479         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2480                 rcu_read_unlock();
2481                 return;
2482         }
2483
2484         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2485
2486         if (!mvmsta->vif ||
2487             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2488                 rcu_read_unlock();
2489                 return;
2490         }
2491
2492         if (mvmsta->sleeping != sleeping) {
2493                 mvmsta->sleeping = sleeping;
2494                 __iwl_mvm_mac_sta_notify(mvm->hw,
2495                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2496                         sta);
2497                 ieee80211_sta_ps_transition(sta, sleeping);
2498         }
2499
2500         if (sleeping) {
2501                 switch (notif->type) {
2502                 case IWL_MVM_PM_EVENT_AWAKE:
2503                 case IWL_MVM_PM_EVENT_ASLEEP:
2504                         break;
2505                 case IWL_MVM_PM_EVENT_UAPSD:
2506                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2507                         break;
2508                 case IWL_MVM_PM_EVENT_PS_POLL:
2509                         ieee80211_sta_pspoll(sta);
2510                         break;
2511                 default:
2512                         break;
2513                 }
2514         }
2515
2516         rcu_read_unlock();
2517 }
2518
2519 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2520                                        struct ieee80211_vif *vif,
2521                                        struct ieee80211_sta *sta)
2522 {
2523         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2524         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2525
2526         /*
2527          * This is called before mac80211 does RCU synchronisation,
2528          * so here we already invalidate our internal RCU-protected
2529          * station pointer. The rest of the code will thus no longer
2530          * be able to find the station this way, and we don't rely
2531          * on further RCU synchronisation after the sta_state()
2532          * callback deleted the station.
2533          */
2534         mutex_lock(&mvm->mutex);
2535         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2536                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2537                                    ERR_PTR(-ENOENT));
2538
2539         mutex_unlock(&mvm->mutex);
2540 }
2541
2542 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2543                                 const u8 *bssid)
2544 {
2545         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2546                 return;
2547
2548         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2549                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2550                 return;
2551         }
2552
2553         if (!vif->p2p &&
2554             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2555                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2556                 return;
2557         }
2558
2559         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2560 }
2561
2562 static void
2563 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2564                            struct ieee80211_vif *vif, u8 *peer_addr,
2565                            enum nl80211_tdls_operation action)
2566 {
2567         struct iwl_fw_dbg_trigger_tlv *trig;
2568         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2569
2570         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2571                 return;
2572
2573         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2574         tdls_trig = (void *)trig->data;
2575         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2576                 return;
2577
2578         if (!(tdls_trig->action_bitmap & BIT(action)))
2579                 return;
2580
2581         if (tdls_trig->peer_mode &&
2582             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2583                 return;
2584
2585         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2586                                     "TDLS event occurred, peer %pM, action %d",
2587                                     peer_addr, action);
2588 }
2589
2590 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2591                                              struct iwl_mvm_sta *mvm_sta)
2592 {
2593         struct iwl_mvm_tid_data *tid_data;
2594         struct sk_buff *skb;
2595         int i;
2596
2597         spin_lock_bh(&mvm_sta->lock);
2598         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2599                 tid_data = &mvm_sta->tid_data[i];
2600                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2601                         ieee80211_free_txskb(mvm->hw, skb);
2602         }
2603         spin_unlock_bh(&mvm_sta->lock);
2604 }
2605
2606 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2607                                  struct ieee80211_vif *vif,
2608                                  struct ieee80211_sta *sta,
2609                                  enum ieee80211_sta_state old_state,
2610                                  enum ieee80211_sta_state new_state)
2611 {
2612         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2613         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2614         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2615         int ret;
2616
2617         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2618                            sta->addr, old_state, new_state);
2619
2620         /* this would be a mac80211 bug ... but don't crash */
2621         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2622                 return -EINVAL;
2623
2624         /* if a STA is being removed, reuse its ID */
2625         flush_work(&mvm->sta_drained_wk);
2626
2627         /*
2628          * If we are in a STA removal flow and in DQA mode:
2629          *
2630          * This is after the sync_rcu part, so the queues have already been
2631          * flushed. No more TXs on their way in mac80211's path, and no more in
2632          * the queues.
2633          * Also, we won't be getting any new TX frames for this station.
2634          * What we might have are deferred TX frames that need to be taken care
2635          * of.
2636          *
2637          * Drop any still-queued deferred-frame before removing the STA, and
2638          * make sure the worker is no longer handling frames for this STA.
2639          */
2640         if (old_state == IEEE80211_STA_NONE &&
2641             new_state == IEEE80211_STA_NOTEXIST &&
2642             iwl_mvm_is_dqa_supported(mvm)) {
2643                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2644                 flush_work(&mvm->add_stream_wk);
2645
2646                 /*
2647                  * No need to make sure deferred TX indication is off since the
2648                  * worker will already remove it if it was on
2649                  */
2650         }
2651
2652         mutex_lock(&mvm->mutex);
2653         /* track whether or not the station is associated */
2654         mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2655
2656         if (old_state == IEEE80211_STA_NOTEXIST &&
2657             new_state == IEEE80211_STA_NONE) {
2658                 /*
2659                  * Firmware bug - it'll crash if the beacon interval is less
2660                  * than 16. We can't avoid connecting at all, so refuse the
2661                  * station state change, this will cause mac80211 to abandon
2662                  * attempts to connect to this AP, and eventually wpa_s will
2663                  * blacklist the AP...
2664                  */
2665                 if (vif->type == NL80211_IFTYPE_STATION &&
2666                     vif->bss_conf.beacon_int < 16) {
2667                         IWL_ERR(mvm,
2668                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2669                                 sta->addr, vif->bss_conf.beacon_int);
2670                         ret = -EINVAL;
2671                         goto out_unlock;
2672                 }
2673
2674                 if (sta->tdls &&
2675                     (vif->p2p ||
2676                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2677                                                 IWL_MVM_TDLS_STA_COUNT ||
2678                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2679                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2680                         ret = -EBUSY;
2681                         goto out_unlock;
2682                 }
2683
2684                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2685                 if (sta->tdls && ret == 0) {
2686                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2687                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2688                                                    NL80211_TDLS_SETUP);
2689                 }
2690         } else if (old_state == IEEE80211_STA_NONE &&
2691                    new_state == IEEE80211_STA_AUTH) {
2692                 /*
2693                  * EBS may be disabled due to previous failures reported by FW.
2694                  * Reset EBS status here assuming environment has been changed.
2695                  */
2696                 mvm->last_ebs_successful = true;
2697                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2698                 ret = 0;
2699         } else if (old_state == IEEE80211_STA_AUTH &&
2700                    new_state == IEEE80211_STA_ASSOC) {
2701                 if (vif->type == NL80211_IFTYPE_AP) {
2702                         mvmvif->ap_assoc_sta_count++;
2703                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2704                 }
2705
2706                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2707                                      true);
2708                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2709         } else if (old_state == IEEE80211_STA_ASSOC &&
2710                    new_state == IEEE80211_STA_AUTHORIZED) {
2711
2712                 /* we don't support TDLS during DCM */
2713                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2714                         iwl_mvm_teardown_tdls_peers(mvm);
2715
2716                 if (sta->tdls)
2717                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2718                                                    NL80211_TDLS_ENABLE_LINK);
2719
2720                 /* enable beacon filtering */
2721                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2722                 ret = 0;
2723         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2724                    new_state == IEEE80211_STA_ASSOC) {
2725                 /* disable beacon filtering */
2726                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2727                 ret = 0;
2728         } else if (old_state == IEEE80211_STA_ASSOC &&
2729                    new_state == IEEE80211_STA_AUTH) {
2730                 if (vif->type == NL80211_IFTYPE_AP) {
2731                         mvmvif->ap_assoc_sta_count--;
2732                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2733                 }
2734                 ret = 0;
2735         } else if (old_state == IEEE80211_STA_AUTH &&
2736                    new_state == IEEE80211_STA_NONE) {
2737                 ret = 0;
2738         } else if (old_state == IEEE80211_STA_NONE &&
2739                    new_state == IEEE80211_STA_NOTEXIST) {
2740                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2741                 if (sta->tdls) {
2742                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2743                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2744                                                    NL80211_TDLS_DISABLE_LINK);
2745                 }
2746         } else {
2747                 ret = -EIO;
2748         }
2749  out_unlock:
2750         mutex_unlock(&mvm->mutex);
2751
2752         if (sta->tdls && ret == 0) {
2753                 if (old_state == IEEE80211_STA_NOTEXIST &&
2754                     new_state == IEEE80211_STA_NONE)
2755                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2756                 else if (old_state == IEEE80211_STA_NONE &&
2757                          new_state == IEEE80211_STA_NOTEXIST)
2758                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2759         }
2760
2761         return ret;
2762 }
2763
2764 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2765 {
2766         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2767
2768         mvm->rts_threshold = value;
2769
2770         return 0;
2771 }
2772
2773 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2774                                   struct ieee80211_vif *vif,
2775                                   struct ieee80211_sta *sta, u32 changed)
2776 {
2777         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2778
2779         if (vif->type == NL80211_IFTYPE_STATION &&
2780             changed & IEEE80211_RC_NSS_CHANGED)
2781                 iwl_mvm_sf_update(mvm, vif, false);
2782 }
2783
2784 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2785                                struct ieee80211_vif *vif, u16 ac,
2786                                const struct ieee80211_tx_queue_params *params)
2787 {
2788         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2789         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2790
2791         mvmvif->queue_params[ac] = *params;
2792
2793         /*
2794          * No need to update right away, we'll get BSS_CHANGED_QOS
2795          * The exception is P2P_DEVICE interface which needs immediate update.
2796          */
2797         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2798                 int ret;
2799
2800                 mutex_lock(&mvm->mutex);
2801                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2802                 mutex_unlock(&mvm->mutex);
2803                 return ret;
2804         }
2805         return 0;
2806 }
2807
2808 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2809                                       struct ieee80211_vif *vif)
2810 {
2811         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2812         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2813         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2814
2815         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2816                 return;
2817
2818         /*
2819          * iwl_mvm_protect_session() reads directly from the device
2820          * (the system time), so make sure it is available.
2821          */
2822         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2823                 return;
2824
2825         mutex_lock(&mvm->mutex);
2826         /* Try really hard to protect the session and hear a beacon */
2827         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2828         mutex_unlock(&mvm->mutex);
2829
2830         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2831 }
2832
2833 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2834                                         struct ieee80211_vif *vif,
2835                                         struct cfg80211_sched_scan_request *req,
2836                                         struct ieee80211_scan_ies *ies)
2837 {
2838         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2839
2840         int ret;
2841
2842         mutex_lock(&mvm->mutex);
2843
2844         if (!vif->bss_conf.idle) {
2845                 ret = -EBUSY;
2846                 goto out;
2847         }
2848
2849         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2850
2851 out:
2852         mutex_unlock(&mvm->mutex);
2853         return ret;
2854 }
2855
2856 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2857                                        struct ieee80211_vif *vif)
2858 {
2859         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2860         int ret;
2861
2862         mutex_lock(&mvm->mutex);
2863
2864         /* Due to a race condition, it's possible that mac80211 asks
2865          * us to stop a sched_scan when it's already stopped.  This
2866          * can happen, for instance, if we stopped the scan ourselves,
2867          * called ieee80211_sched_scan_stopped() and the userspace called
2868          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2869          * could run.  To handle this, simply return if the scan is
2870          * not running.
2871         */
2872         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2873                 mutex_unlock(&mvm->mutex);
2874                 return 0;
2875         }
2876
2877         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2878         mutex_unlock(&mvm->mutex);
2879         iwl_mvm_wait_for_async_handlers(mvm);
2880
2881         return ret;
2882 }
2883
2884 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2885                                enum set_key_cmd cmd,
2886                                struct ieee80211_vif *vif,
2887                                struct ieee80211_sta *sta,
2888                                struct ieee80211_key_conf *key)
2889 {
2890         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2891         struct iwl_mvm_sta *mvmsta;
2892         struct iwl_mvm_key_pn *ptk_pn;
2893         int keyidx = key->keyidx;
2894         int ret;
2895         u8 key_offset;
2896
2897         if (iwlwifi_mod_params.swcrypto) {
2898                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2899                 return -EOPNOTSUPP;
2900         }
2901
2902         switch (key->cipher) {
2903         case WLAN_CIPHER_SUITE_TKIP:
2904                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2905                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2906                 break;
2907         case WLAN_CIPHER_SUITE_CCMP:
2908         case WLAN_CIPHER_SUITE_GCMP:
2909         case WLAN_CIPHER_SUITE_GCMP_256:
2910                 if (!iwl_mvm_has_new_tx_api(mvm))
2911                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2912                 break;
2913         case WLAN_CIPHER_SUITE_AES_CMAC:
2914         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2915         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2916                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2917                 break;
2918         case WLAN_CIPHER_SUITE_WEP40:
2919         case WLAN_CIPHER_SUITE_WEP104:
2920                 /* For non-client mode, only use WEP keys for TX as we probably
2921                  * don't have a station yet anyway and would then have to keep
2922                  * track of the keys, linking them to each of the clients/peers
2923                  * as they appear. For now, don't do that, for performance WEP
2924                  * offload doesn't really matter much, but we need it for some
2925                  * other offload features in client mode.
2926                  */
2927                 if (vif->type != NL80211_IFTYPE_STATION)
2928                         return 0;
2929                 break;
2930         default:
2931                 /* currently FW supports only one optional cipher scheme */
2932                 if (hw->n_cipher_schemes &&
2933                     hw->cipher_schemes->cipher == key->cipher)
2934                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2935                 else
2936                         return -EOPNOTSUPP;
2937         }
2938
2939         mutex_lock(&mvm->mutex);
2940
2941         switch (cmd) {
2942         case SET_KEY:
2943                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2944                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2945                         /*
2946                          * GTK on AP interface is a TX-only key, return 0;
2947                          * on IBSS they're per-station and because we're lazy
2948                          * we don't support them for RX, so do the same.
2949                          * CMAC/GMAC in AP/IBSS modes must be done in software.
2950                          */
2951                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2952                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2953                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2954                                 ret = -EOPNOTSUPP;
2955                         else
2956                                 ret = 0;
2957
2958                         if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
2959                             key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
2960                             !iwl_mvm_has_new_tx_api(mvm)) {
2961                                 key->hw_key_idx = STA_KEY_IDX_INVALID;
2962                                 break;
2963                         }
2964                 }
2965
2966                 /* During FW restart, in order to restore the state as it was,
2967                  * don't try to reprogram keys we previously failed for.
2968                  */
2969                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2970                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2971                         IWL_DEBUG_MAC80211(mvm,
2972                                            "skip invalid idx key programming during restart\n");
2973                         ret = 0;
2974                         break;
2975                 }
2976
2977                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2978                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2979                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2980                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2981                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2982                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2983                         struct ieee80211_key_seq seq;
2984                         int tid, q;
2985
2986                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2987                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2988                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2989                                          mvm->trans->num_rx_queues *
2990                                                 sizeof(ptk_pn->q[0]),
2991                                          GFP_KERNEL);
2992                         if (!ptk_pn) {
2993                                 ret = -ENOMEM;
2994                                 break;
2995                         }
2996
2997                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2998                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2999                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3000                                         memcpy(ptk_pn->q[q].pn[tid],
3001                                                seq.ccmp.pn,
3002                                                IEEE80211_CCMP_PN_LEN);
3003                         }
3004
3005                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3006                 }
3007
3008                 /* in HW restart reuse the index, otherwise request a new one */
3009                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3010                         key_offset = key->hw_key_idx;
3011                 else
3012                         key_offset = STA_KEY_IDX_INVALID;
3013
3014                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3015                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3016                 if (ret) {
3017                         IWL_WARN(mvm, "set key failed\n");
3018                         /*
3019                          * can't add key for RX, but we don't need it
3020                          * in the device for TX so still return 0
3021                          */
3022                         key->hw_key_idx = STA_KEY_IDX_INVALID;
3023                         ret = 0;
3024                 }
3025
3026                 break;
3027         case DISABLE_KEY:
3028                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3029                         ret = 0;
3030                         break;
3031                 }
3032
3033                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3034                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3035                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3036                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3037                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3038                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3039                         ptk_pn = rcu_dereference_protected(
3040                                                 mvmsta->ptk_pn[keyidx],
3041                                                 lockdep_is_held(&mvm->mutex));
3042                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3043                         if (ptk_pn)
3044                                 kfree_rcu(ptk_pn, rcu_head);
3045                 }
3046
3047                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3048                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3049                 break;
3050         default:
3051                 ret = -EINVAL;
3052         }
3053
3054         mutex_unlock(&mvm->mutex);
3055         return ret;
3056 }
3057
3058 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3059                                         struct ieee80211_vif *vif,
3060                                         struct ieee80211_key_conf *keyconf,
3061                                         struct ieee80211_sta *sta,
3062                                         u32 iv32, u16 *phase1key)
3063 {
3064         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3065
3066         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3067                 return;
3068
3069         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3070 }
3071
3072
3073 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3074                                struct iwl_rx_packet *pkt, void *data)
3075 {
3076         struct iwl_mvm *mvm =
3077                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3078         struct iwl_hs20_roc_res *resp;
3079         int resp_len = iwl_rx_packet_payload_len(pkt);
3080         struct iwl_mvm_time_event_data *te_data = data;
3081
3082         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3083                 return true;
3084
3085         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3086                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3087                 return true;
3088         }
3089
3090         resp = (void *)pkt->data;
3091
3092         IWL_DEBUG_TE(mvm,
3093                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3094                      resp->status, resp->event_unique_id);
3095
3096         te_data->uid = le32_to_cpu(resp->event_unique_id);
3097         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3098                      te_data->uid);
3099
3100         spin_lock_bh(&mvm->time_event_lock);
3101         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3102         spin_unlock_bh(&mvm->time_event_lock);
3103
3104         return true;
3105 }
3106
3107 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3108 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3109 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3110 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3111 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3112 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3113                                     struct ieee80211_channel *channel,
3114                                     struct ieee80211_vif *vif,
3115                                     int duration)
3116 {
3117         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3118         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3119         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3120         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3121         struct iwl_notification_wait wait_time_event;
3122         u32 dtim_interval = vif->bss_conf.dtim_period *
3123                 vif->bss_conf.beacon_int;
3124         u32 req_dur, delay;
3125         struct iwl_hs20_roc_req aux_roc_req = {
3126                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3127                 .id_and_color =
3128                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3129                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3130                 /* Set the channel info data */
3131                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3132                         PHY_BAND_24 : PHY_BAND_5,
3133                 .channel_info.channel = channel->hw_value,
3134                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3135                 /* Set the time and duration */
3136                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3137          };
3138
3139         delay = AUX_ROC_MIN_DELAY;
3140         req_dur = MSEC_TO_TU(duration);
3141
3142         /*
3143          * If we are associated we want the delay time to be at least one
3144          * dtim interval so that the FW can wait until after the DTIM and
3145          * then start the time event, this will potentially allow us to
3146          * remain off-channel for the max duration.
3147          * Since we want to use almost a whole dtim interval we would also
3148          * like the delay to be for 2-3 dtim intervals, in case there are
3149          * other time events with higher priority.
3150          */
3151         if (vif->bss_conf.assoc) {
3152                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3153                 /* We cannot remain off-channel longer than the DTIM interval */
3154                 if (dtim_interval <= req_dur) {
3155                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3156                         if (req_dur <= AUX_ROC_MIN_DURATION)
3157                                 req_dur = dtim_interval -
3158                                         AUX_ROC_MIN_SAFETY_BUFFER;
3159                 }
3160         }
3161
3162         aux_roc_req.duration = cpu_to_le32(req_dur);
3163         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3164
3165         IWL_DEBUG_TE(mvm,
3166                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3167                      channel->hw_value, req_dur, duration, delay,
3168                      dtim_interval);
3169         /* Set the node address */
3170         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3171
3172         lockdep_assert_held(&mvm->mutex);
3173
3174         spin_lock_bh(&mvm->time_event_lock);
3175
3176         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3177                 spin_unlock_bh(&mvm->time_event_lock);
3178                 return -EIO;
3179         }
3180
3181         te_data->vif = vif;
3182         te_data->duration = duration;
3183         te_data->id = HOT_SPOT_CMD;
3184
3185         spin_unlock_bh(&mvm->time_event_lock);
3186
3187         /*
3188          * Use a notification wait, which really just processes the
3189          * command response and doesn't wait for anything, in order
3190          * to be able to process the response and get the UID inside
3191          * the RX path. Using CMD_WANT_SKB doesn't work because it
3192          * stores the buffer and then wakes up this thread, by which
3193          * time another notification (that the time event started)
3194          * might already be processed unsuccessfully.
3195          */
3196         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3197                                    time_event_response,
3198                                    ARRAY_SIZE(time_event_response),
3199                                    iwl_mvm_rx_aux_roc, te_data);
3200
3201         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3202                                    &aux_roc_req);
3203
3204         if (res) {
3205                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3206                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3207                 goto out_clear_te;
3208         }
3209
3210         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3211         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3212         /* should never fail */
3213         WARN_ON_ONCE(res);
3214
3215         if (res) {
3216  out_clear_te:
3217                 spin_lock_bh(&mvm->time_event_lock);
3218                 iwl_mvm_te_clear_data(mvm, te_data);
3219                 spin_unlock_bh(&mvm->time_event_lock);
3220         }
3221
3222         return res;
3223 }
3224
3225 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3226                        struct ieee80211_vif *vif,
3227                        struct ieee80211_channel *channel,
3228                        int duration,
3229                        enum ieee80211_roc_type type)
3230 {
3231         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3232         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3233         struct cfg80211_chan_def chandef;
3234         struct iwl_mvm_phy_ctxt *phy_ctxt;
3235         int ret, i;
3236
3237         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3238                            duration, type);
3239
3240         flush_work(&mvm->roc_done_wk);
3241
3242         mutex_lock(&mvm->mutex);
3243
3244         switch (vif->type) {
3245         case NL80211_IFTYPE_STATION:
3246                 if (fw_has_capa(&mvm->fw->ucode_capa,
3247                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3248                         /* Use aux roc framework (HS20) */
3249                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3250                                                        vif, duration);
3251                         goto out_unlock;
3252                 }
3253                 IWL_ERR(mvm, "hotspot not supported\n");
3254                 ret = -EINVAL;
3255                 goto out_unlock;
3256         case NL80211_IFTYPE_P2P_DEVICE:
3257                 /* handle below */
3258                 break;
3259         default:
3260                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3261                 ret = -EINVAL;
3262                 goto out_unlock;
3263         }
3264
3265         for (i = 0; i < NUM_PHY_CTX; i++) {
3266                 phy_ctxt = &mvm->phy_ctxts[i];
3267                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3268                         continue;
3269
3270                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3271                         /*
3272                          * Unbind the P2P_DEVICE from the current PHY context,
3273                          * and if the PHY context is not used remove it.
3274                          */
3275                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3276                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3277                                 goto out_unlock;
3278
3279                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3280
3281                         /* Bind the P2P_DEVICE to the current PHY Context */
3282                         mvmvif->phy_ctxt = phy_ctxt;
3283
3284                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3285                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3286                                 goto out_unlock;
3287
3288                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3289                         goto schedule_time_event;
3290                 }
3291         }
3292
3293         /* Need to update the PHY context only if the ROC channel changed */
3294         if (channel == mvmvif->phy_ctxt->channel)
3295                 goto schedule_time_event;
3296
3297         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3298
3299         /*
3300          * Change the PHY context configuration as it is currently referenced
3301          * only by the P2P Device MAC
3302          */
3303         if (mvmvif->phy_ctxt->ref == 1) {
3304                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3305                                                &chandef, 1, 1);
3306                 if (ret)
3307                         goto out_unlock;
3308         } else {
3309                 /*
3310                  * The PHY context is shared with other MACs. Need to remove the
3311                  * P2P Device from the binding, allocate an new PHY context and
3312                  * create a new binding
3313                  */
3314                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3315                 if (!phy_ctxt) {
3316                         ret = -ENOSPC;
3317                         goto out_unlock;
3318                 }
3319
3320                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3321                                                1, 1);
3322                 if (ret) {
3323                         IWL_ERR(mvm, "Failed to change PHY context\n");
3324                         goto out_unlock;
3325                 }
3326
3327                 /* Unbind the P2P_DEVICE from the current PHY context */
3328                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3329                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3330                         goto out_unlock;
3331
3332                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3333
3334                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3335                 mvmvif->phy_ctxt = phy_ctxt;
3336
3337                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3338                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3339                         goto out_unlock;
3340
3341                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3342         }
3343
3344 schedule_time_event:
3345         /* Schedule the time events */
3346         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3347
3348 out_unlock:
3349         mutex_unlock(&mvm->mutex);
3350         IWL_DEBUG_MAC80211(mvm, "leave\n");
3351         return ret;
3352 }
3353
3354 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3355 {
3356         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3357
3358         IWL_DEBUG_MAC80211(mvm, "enter\n");
3359
3360         mutex_lock(&mvm->mutex);
3361         iwl_mvm_stop_roc(mvm);
3362         mutex_unlock(&mvm->mutex);
3363
3364         IWL_DEBUG_MAC80211(mvm, "leave\n");
3365         return 0;
3366 }
3367
3368 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3369                                  struct ieee80211_chanctx_conf *ctx)
3370 {
3371         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3372         struct iwl_mvm_phy_ctxt *phy_ctxt;
3373         int ret;
3374
3375         lockdep_assert_held(&mvm->mutex);
3376
3377         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3378
3379         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3380         if (!phy_ctxt) {
3381                 ret = -ENOSPC;
3382                 goto out;
3383         }
3384
3385         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3386                                        ctx->rx_chains_static,
3387                                        ctx->rx_chains_dynamic);
3388         if (ret) {
3389                 IWL_ERR(mvm, "Failed to add PHY context\n");
3390                 goto out;
3391         }
3392
3393         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3394         *phy_ctxt_id = phy_ctxt->id;
3395 out:
3396         return ret;
3397 }
3398
3399 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3400                                struct ieee80211_chanctx_conf *ctx)
3401 {
3402         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3403         int ret;
3404
3405         mutex_lock(&mvm->mutex);
3406         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3407         mutex_unlock(&mvm->mutex);
3408
3409         return ret;
3410 }
3411
3412 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3413                                      struct ieee80211_chanctx_conf *ctx)
3414 {
3415         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3416         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3417
3418         lockdep_assert_held(&mvm->mutex);
3419
3420         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3421 }
3422
3423 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3424                                    struct ieee80211_chanctx_conf *ctx)
3425 {
3426         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3427
3428         mutex_lock(&mvm->mutex);
3429         __iwl_mvm_remove_chanctx(mvm, ctx);
3430         mutex_unlock(&mvm->mutex);
3431 }
3432
3433 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3434                                    struct ieee80211_chanctx_conf *ctx,
3435                                    u32 changed)
3436 {
3437         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3438         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3439         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3440
3441         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3442                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3443                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3444                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3445                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3446                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3447                       phy_ctxt->ref, changed))
3448                 return;
3449
3450         mutex_lock(&mvm->mutex);
3451         iwl_mvm_bt_coex_vif_change(mvm);
3452         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3453                                  ctx->rx_chains_static,
3454                                  ctx->rx_chains_dynamic);
3455         mutex_unlock(&mvm->mutex);
3456 }
3457
3458 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3459                                         struct ieee80211_vif *vif,
3460                                         struct ieee80211_chanctx_conf *ctx,
3461                                         bool switching_chanctx)
3462 {
3463         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3464         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3465         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3466         int ret;
3467
3468         lockdep_assert_held(&mvm->mutex);
3469
3470         mvmvif->phy_ctxt = phy_ctxt;
3471
3472         switch (vif->type) {
3473         case NL80211_IFTYPE_AP:
3474                 /* only needed if we're switching chanctx (i.e. during CSA) */
3475                 if (switching_chanctx) {
3476                         mvmvif->ap_ibss_active = true;
3477                         break;
3478                 }
3479         case NL80211_IFTYPE_ADHOC:
3480                 /*
3481                  * The AP binding flow is handled as part of the start_ap flow
3482                  * (in bss_info_changed), similarly for IBSS.
3483                  */
3484                 ret = 0;
3485                 goto out;
3486         case NL80211_IFTYPE_STATION:
3487                 break;
3488         case NL80211_IFTYPE_MONITOR:
3489                 /* always disable PS when a monitor interface is active */
3490                 mvmvif->ps_disabled = true;
3491                 break;
3492         default:
3493                 ret = -EINVAL;
3494                 goto out;
3495         }
3496
3497         ret = iwl_mvm_binding_add_vif(mvm, vif);
3498         if (ret)
3499                 goto out;
3500
3501         /*
3502          * Power state must be updated before quotas,
3503          * otherwise fw will complain.
3504          */
3505         iwl_mvm_power_update_mac(mvm);
3506
3507         /* Setting the quota at this stage is only required for monitor
3508          * interfaces. For the other types, the bss_info changed flow
3509          * will handle quota settings.
3510          */
3511         if (vif->type == NL80211_IFTYPE_MONITOR) {
3512                 mvmvif->monitor_active = true;
3513                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3514                 if (ret)
3515                         goto out_remove_binding;
3516
3517                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3518                 if (ret)
3519                         goto out_remove_binding;
3520
3521         }
3522
3523         /* Handle binding during CSA */
3524         if (vif->type == NL80211_IFTYPE_AP) {
3525                 iwl_mvm_update_quotas(mvm, false, NULL);
3526                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3527         }
3528
3529         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3530                 u32 duration = 2 * vif->bss_conf.beacon_int;
3531
3532                 /* iwl_mvm_protect_session() reads directly from the
3533                  * device (the system time), so make sure it is
3534                  * available.
3535                  */
3536                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3537                 if (ret)
3538                         goto out_remove_binding;
3539
3540                 /* Protect the session to make sure we hear the first
3541                  * beacon on the new channel.
3542                  */
3543                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3544                                         vif->bss_conf.beacon_int / 2,
3545                                         true);
3546
3547                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3548
3549                 iwl_mvm_update_quotas(mvm, false, NULL);
3550         }
3551
3552         goto out;
3553
3554 out_remove_binding:
3555         iwl_mvm_binding_remove_vif(mvm, vif);
3556         iwl_mvm_power_update_mac(mvm);
3557 out:
3558         if (ret)
3559                 mvmvif->phy_ctxt = NULL;
3560         return ret;
3561 }
3562 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3563                                       struct ieee80211_vif *vif,
3564                                       struct ieee80211_chanctx_conf *ctx)
3565 {
3566         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3567         int ret;
3568
3569         mutex_lock(&mvm->mutex);
3570         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3571         mutex_unlock(&mvm->mutex);
3572
3573         return ret;
3574 }
3575
3576 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3577                                            struct ieee80211_vif *vif,
3578                                            struct ieee80211_chanctx_conf *ctx,
3579                                            bool switching_chanctx)
3580 {
3581         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3582         struct ieee80211_vif *disabled_vif = NULL;
3583
3584         lockdep_assert_held(&mvm->mutex);
3585
3586         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3587
3588         switch (vif->type) {
3589         case NL80211_IFTYPE_ADHOC:
3590                 goto out;
3591         case NL80211_IFTYPE_MONITOR:
3592                 mvmvif->monitor_active = false;
3593                 mvmvif->ps_disabled = false;
3594                 iwl_mvm_rm_snif_sta(mvm, vif);
3595                 break;
3596         case NL80211_IFTYPE_AP:
3597                 /* This part is triggered only during CSA */
3598                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3599                         goto out;
3600
3601                 mvmvif->csa_countdown = false;
3602
3603                 /* Set CS bit on all the stations */
3604                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3605
3606                 /* Save blocked iface, the timeout is set on the next beacon */
3607                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3608
3609                 mvmvif->ap_ibss_active = false;
3610                 break;
3611         case NL80211_IFTYPE_STATION:
3612                 if (!switching_chanctx)
3613                         break;
3614
3615                 disabled_vif = vif;
3616
3617                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3618                 break;
3619         default:
3620                 break;
3621         }
3622
3623         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3624         iwl_mvm_binding_remove_vif(mvm, vif);
3625
3626 out:
3627         mvmvif->phy_ctxt = NULL;
3628         iwl_mvm_power_update_mac(mvm);
3629 }
3630
3631 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3632                                          struct ieee80211_vif *vif,
3633                                          struct ieee80211_chanctx_conf *ctx)
3634 {
3635         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3636
3637         mutex_lock(&mvm->mutex);
3638         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3639         mutex_unlock(&mvm->mutex);
3640 }
3641
3642 static int
3643 iwl_mvm_switch_vif_chanctx_swap(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         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3651
3652         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3653         if (ret) {
3654                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3655                 goto out_reassign;
3656         }
3657
3658         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3659                                            true);
3660         if (ret) {
3661                 IWL_ERR(mvm,
3662                         "failed to assign new_ctx during channel switch\n");
3663                 goto out_remove;
3664         }
3665
3666         /* we don't support TDLS during DCM - can be caused by channel switch */
3667         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3668                 iwl_mvm_teardown_tdls_peers(mvm);
3669
3670         goto out;
3671
3672 out_remove:
3673         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3674
3675 out_reassign:
3676         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3677                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3678                 goto out_restart;
3679         }
3680
3681         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3682                                          true)) {
3683                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3684                 goto out_restart;
3685         }
3686
3687         goto out;
3688
3689 out_restart:
3690         /* things keep failing, better restart the hw */
3691         iwl_mvm_nic_restart(mvm, false);
3692
3693 out:
3694         mutex_unlock(&mvm->mutex);
3695
3696         return ret;
3697 }
3698
3699 static int
3700 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3701                                     struct ieee80211_vif_chanctx_switch *vifs)
3702 {
3703         int ret;
3704
3705         mutex_lock(&mvm->mutex);
3706         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3707
3708         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3709                                            true);
3710         if (ret) {
3711                 IWL_ERR(mvm,
3712                         "failed to assign new_ctx during channel switch\n");
3713                 goto out_reassign;
3714         }
3715
3716         goto out;
3717
3718 out_reassign:
3719         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3720                                          true)) {
3721                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3722                 goto out_restart;
3723         }
3724
3725         goto out;
3726
3727 out_restart:
3728         /* things keep failing, better restart the hw */
3729         iwl_mvm_nic_restart(mvm, false);
3730
3731 out:
3732         mutex_unlock(&mvm->mutex);
3733
3734         return ret;
3735 }
3736
3737 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3738                                       struct ieee80211_vif_chanctx_switch *vifs,
3739                                       int n_vifs,
3740                                       enum ieee80211_chanctx_switch_mode mode)
3741 {
3742         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3743         int ret;
3744
3745         /* we only support a single-vif right now */
3746         if (n_vifs > 1)
3747                 return -EOPNOTSUPP;
3748
3749         switch (mode) {
3750         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3751                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3752                 break;
3753         case CHANCTX_SWMODE_REASSIGN_VIF:
3754                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3755                 break;
3756         default:
3757                 ret = -EOPNOTSUPP;
3758                 break;
3759         }
3760
3761         return ret;
3762 }
3763
3764 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
3765 {
3766         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3767
3768         return mvm->ibss_manager;
3769 }
3770
3771 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3772                            struct ieee80211_sta *sta,
3773                            bool set)
3774 {
3775         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3776         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3777
3778         if (!mvm_sta || !mvm_sta->vif) {
3779                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3780                 return -EINVAL;
3781         }
3782
3783         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3784 }
3785
3786 #ifdef CONFIG_NL80211_TESTMODE
3787 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3788         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3789         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3790         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3791 };
3792
3793 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3794                                       struct ieee80211_vif *vif,
3795                                       void *data, int len)
3796 {
3797         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3798         int err;
3799         u32 noa_duration;
3800
3801         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3802                         NULL);
3803         if (err)
3804                 return err;
3805
3806         if (!tb[IWL_MVM_TM_ATTR_CMD])
3807                 return -EINVAL;
3808
3809         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3810         case IWL_MVM_TM_CMD_SET_NOA:
3811                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3812                     !vif->bss_conf.enable_beacon ||
3813                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3814                         return -EINVAL;
3815
3816                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3817                 if (noa_duration >= vif->bss_conf.beacon_int)
3818                         return -EINVAL;
3819
3820                 mvm->noa_duration = noa_duration;
3821                 mvm->noa_vif = vif;
3822
3823                 return iwl_mvm_update_quotas(mvm, false, NULL);
3824         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3825                 /* must be associated client vif - ignore authorized */
3826                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3827                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3828                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3829                         return -EINVAL;
3830
3831                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3832                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3833                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3834         }
3835
3836         return -EOPNOTSUPP;
3837 }
3838
3839 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3840                                     struct ieee80211_vif *vif,
3841                                     void *data, int len)
3842 {
3843         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3844         int err;
3845
3846         mutex_lock(&mvm->mutex);
3847         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3848         mutex_unlock(&mvm->mutex);
3849
3850         return err;
3851 }
3852 #endif
3853
3854 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3855                                    struct ieee80211_vif *vif,
3856                                    struct ieee80211_channel_switch *chsw)
3857 {
3858         /* By implementing this operation, we prevent mac80211 from
3859          * starting its own channel switch timer, so that we can call
3860          * ieee80211_chswitch_done() ourselves at the right time
3861          * (which is when the absence time event starts).
3862          */
3863
3864         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3865                            "dummy channel switch op\n");
3866 }
3867
3868 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3869                                       struct ieee80211_vif *vif,
3870                                       struct ieee80211_channel_switch *chsw)
3871 {
3872         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3873         struct ieee80211_vif *csa_vif;
3874         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3875         u32 apply_time;
3876         int ret;
3877
3878         mutex_lock(&mvm->mutex);
3879
3880         mvmvif->csa_failed = false;
3881
3882         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3883                            chsw->chandef.center_freq1);
3884
3885         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3886
3887         switch (vif->type) {
3888         case NL80211_IFTYPE_AP:
3889                 csa_vif =
3890                         rcu_dereference_protected(mvm->csa_vif,
3891                                                   lockdep_is_held(&mvm->mutex));
3892                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3893                               "Another CSA is already in progress")) {
3894                         ret = -EBUSY;
3895                         goto out_unlock;
3896                 }
3897
3898                 /* we still didn't unblock tx. prevent new CS meanwhile */
3899                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3900                                               lockdep_is_held(&mvm->mutex))) {
3901                         ret = -EBUSY;
3902                         goto out_unlock;
3903                 }
3904
3905                 rcu_assign_pointer(mvm->csa_vif, vif);
3906
3907                 if (WARN_ONCE(mvmvif->csa_countdown,
3908                               "Previous CSA countdown didn't complete")) {
3909                         ret = -EBUSY;
3910                         goto out_unlock;
3911                 }
3912
3913                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3914
3915                 break;
3916         case NL80211_IFTYPE_STATION:
3917                 if (mvmvif->lqm_active)
3918                         iwl_mvm_send_lqm_cmd(vif,
3919                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3920                                              0, 0);
3921
3922                 /* Schedule the time event to a bit before beacon 1,
3923                  * to make sure we're in the new channel when the
3924                  * GO/AP arrives.
3925                  */
3926                 apply_time = chsw->device_timestamp +
3927                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3928                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3929
3930                 if (chsw->block_tx)
3931                         iwl_mvm_csa_client_absent(mvm, vif);
3932
3933                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3934                                             apply_time);
3935                 if (mvmvif->bf_data.bf_enabled) {
3936                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3937                         if (ret)
3938                                 goto out_unlock;
3939                 }
3940
3941                 break;
3942         default:
3943                 break;
3944         }
3945
3946         mvmvif->ps_disabled = true;
3947
3948         ret = iwl_mvm_power_update_ps(mvm);
3949         if (ret)
3950                 goto out_unlock;
3951
3952         /* we won't be on this channel any longer */
3953         iwl_mvm_teardown_tdls_peers(mvm);
3954
3955 out_unlock:
3956         mutex_unlock(&mvm->mutex);
3957
3958         return ret;
3959 }
3960
3961 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3962                                        struct ieee80211_vif *vif)
3963 {
3964         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3965         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3966         int ret;
3967
3968         mutex_lock(&mvm->mutex);
3969
3970         if (mvmvif->csa_failed) {
3971                 mvmvif->csa_failed = false;
3972                 ret = -EIO;
3973                 goto out_unlock;
3974         }
3975
3976         if (vif->type == NL80211_IFTYPE_STATION) {
3977                 struct iwl_mvm_sta *mvmsta;
3978
3979                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3980                                                           mvmvif->ap_sta_id);
3981
3982                 if (WARN_ON(!mvmsta)) {
3983                         ret = -EIO;
3984                         goto out_unlock;
3985                 }
3986
3987                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3988
3989                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3990
3991                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3992                 if (ret)
3993                         goto out_unlock;
3994
3995                 iwl_mvm_stop_session_protection(mvm, vif);
3996         }
3997
3998         mvmvif->ps_disabled = false;
3999
4000         ret = iwl_mvm_power_update_ps(mvm);
4001
4002 out_unlock:
4003         mutex_unlock(&mvm->mutex);
4004
4005         return ret;
4006 }
4007
4008 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4009                               struct ieee80211_vif *vif, u32 queues, bool drop)
4010 {
4011         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4012         struct iwl_mvm_vif *mvmvif;
4013         struct iwl_mvm_sta *mvmsta;
4014         struct ieee80211_sta *sta;
4015         int i;
4016         u32 msk = 0;
4017
4018         if (!vif || vif->type != NL80211_IFTYPE_STATION)
4019                 return;
4020
4021         /* Make sure we're done with the deferred traffic before flushing */
4022         if (iwl_mvm_is_dqa_supported(mvm))
4023                 flush_work(&mvm->add_stream_wk);
4024
4025         mutex_lock(&mvm->mutex);
4026         mvmvif = iwl_mvm_vif_from_mac80211(vif);
4027
4028         /* flush the AP-station and all TDLS peers */
4029         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4030                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4031                                                 lockdep_is_held(&mvm->mutex));
4032                 if (IS_ERR_OR_NULL(sta))
4033                         continue;
4034
4035                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4036                 if (mvmsta->vif != vif)
4037                         continue;
4038
4039                 /* make sure only TDLS peers or the AP are flushed */
4040                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4041
4042                 if (drop) {
4043                         if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4044                                 IWL_ERR(mvm, "flush request fail\n");
4045                 } else {
4046                         msk |= mvmsta->tfd_queue_msk;
4047                         if (iwl_mvm_has_new_tx_api(mvm))
4048                                 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4049                 }
4050         }
4051
4052         mutex_unlock(&mvm->mutex);
4053
4054         /* this can take a while, and we may need/want other operations
4055          * to succeed while doing this, so do it without the mutex held
4056          */
4057         if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4058                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4059 }
4060
4061 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4062                                   struct survey_info *survey)
4063 {
4064         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4065         int ret;
4066
4067         memset(survey, 0, sizeof(*survey));
4068
4069         /* only support global statistics right now */
4070         if (idx != 0)
4071                 return -ENOENT;
4072
4073         if (!fw_has_capa(&mvm->fw->ucode_capa,
4074                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4075                 return -ENOENT;
4076
4077         mutex_lock(&mvm->mutex);
4078
4079         if (iwl_mvm_firmware_running(mvm)) {
4080                 ret = iwl_mvm_request_statistics(mvm, false);
4081                 if (ret)
4082                         goto out;
4083         }
4084
4085         survey->filled = SURVEY_INFO_TIME |
4086                          SURVEY_INFO_TIME_RX |
4087                          SURVEY_INFO_TIME_TX |
4088                          SURVEY_INFO_TIME_SCAN;
4089         survey->time = mvm->accu_radio_stats.on_time_rf +
4090                        mvm->radio_stats.on_time_rf;
4091         do_div(survey->time, USEC_PER_MSEC);
4092
4093         survey->time_rx = mvm->accu_radio_stats.rx_time +
4094                           mvm->radio_stats.rx_time;
4095         do_div(survey->time_rx, USEC_PER_MSEC);
4096
4097         survey->time_tx = mvm->accu_radio_stats.tx_time +
4098                           mvm->radio_stats.tx_time;
4099         do_div(survey->time_tx, USEC_PER_MSEC);
4100
4101         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4102                             mvm->radio_stats.on_time_scan;
4103         do_div(survey->time_scan, USEC_PER_MSEC);
4104
4105         ret = 0;
4106  out:
4107         mutex_unlock(&mvm->mutex);
4108         return ret;
4109 }
4110
4111 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4112                                        struct ieee80211_vif *vif,
4113                                        struct ieee80211_sta *sta,
4114                                        struct station_info *sinfo)
4115 {
4116         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4117         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4118         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4119
4120         if (mvmsta->avg_energy) {
4121                 sinfo->signal_avg = mvmsta->avg_energy;
4122                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4123         }
4124
4125         if (!fw_has_capa(&mvm->fw->ucode_capa,
4126                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4127                 return;
4128
4129         /* if beacon filtering isn't on mac80211 does it anyway */
4130         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4131                 return;
4132
4133         if (!vif->bss_conf.assoc)
4134                 return;
4135
4136         mutex_lock(&mvm->mutex);
4137
4138         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4139                 goto unlock;
4140
4141         if (iwl_mvm_request_statistics(mvm, false))
4142                 goto unlock;
4143
4144         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4145                            mvmvif->beacon_stats.accu_num_beacons;
4146         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4147         if (mvmvif->beacon_stats.avg_signal) {
4148                 /* firmware only reports a value after RXing a few beacons */
4149                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4150                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4151         }
4152  unlock:
4153         mutex_unlock(&mvm->mutex);
4154 }
4155
4156 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4157                                         struct ieee80211_vif *vif,
4158                                         const struct ieee80211_event *event)
4159 {
4160 #define CHECK_MLME_TRIGGER(_cnt, _fmt...)                       \
4161         do {                                                    \
4162                 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))   \
4163                         break;                                  \
4164                 iwl_mvm_fw_dbg_collect_trig(mvm, trig, _fmt);   \
4165         } while (0)
4166
4167         struct iwl_fw_dbg_trigger_tlv *trig;
4168         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4169
4170         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4171                 return;
4172
4173         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4174         trig_mlme = (void *)trig->data;
4175         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4176                 return;
4177
4178         if (event->u.mlme.data == ASSOC_EVENT) {
4179                 if (event->u.mlme.status == MLME_DENIED)
4180                         CHECK_MLME_TRIGGER(stop_assoc_denied,
4181                                            "DENIED ASSOC: reason %d",
4182                                             event->u.mlme.reason);
4183                 else if (event->u.mlme.status == MLME_TIMEOUT)
4184                         CHECK_MLME_TRIGGER(stop_assoc_timeout,
4185                                            "ASSOC TIMEOUT");
4186         } else if (event->u.mlme.data == AUTH_EVENT) {
4187                 if (event->u.mlme.status == MLME_DENIED)
4188                         CHECK_MLME_TRIGGER(stop_auth_denied,
4189                                            "DENIED AUTH: reason %d",
4190                                            event->u.mlme.reason);
4191                 else if (event->u.mlme.status == MLME_TIMEOUT)
4192                         CHECK_MLME_TRIGGER(stop_auth_timeout,
4193                                            "AUTH TIMEOUT");
4194         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4195                 CHECK_MLME_TRIGGER(stop_rx_deauth,
4196                                    "DEAUTH RX %d", event->u.mlme.reason);
4197         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4198                 CHECK_MLME_TRIGGER(stop_tx_deauth,
4199                                    "DEAUTH TX %d", event->u.mlme.reason);
4200         }
4201 #undef CHECK_MLME_TRIGGER
4202 }
4203
4204 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4205                                           struct ieee80211_vif *vif,
4206                                           const struct ieee80211_event *event)
4207 {
4208         struct iwl_fw_dbg_trigger_tlv *trig;
4209         struct iwl_fw_dbg_trigger_ba *ba_trig;
4210
4211         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4212                 return;
4213
4214         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4215         ba_trig = (void *)trig->data;
4216         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4217                 return;
4218
4219         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4220                 return;
4221
4222         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4223                                     "BAR received from %pM, tid %d, ssn %d",
4224                                     event->u.ba.sta->addr, event->u.ba.tid,
4225                                     event->u.ba.ssn);
4226 }
4227
4228 static void
4229 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4230                                      struct ieee80211_vif *vif,
4231                                      const struct ieee80211_event *event)
4232 {
4233         struct iwl_fw_dbg_trigger_tlv *trig;
4234         struct iwl_fw_dbg_trigger_ba *ba_trig;
4235
4236         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4237                 return;
4238
4239         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4240         ba_trig = (void *)trig->data;
4241         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4242                 return;
4243
4244         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4245                 return;
4246
4247         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4248                                     "Frame from %pM timed out, tid %d",
4249                                     event->u.ba.sta->addr, event->u.ba.tid);
4250 }
4251
4252 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4253                                        struct ieee80211_vif *vif,
4254                                        const struct ieee80211_event *event)
4255 {
4256         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4257
4258         switch (event->type) {
4259         case MLME_EVENT:
4260                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4261                 break;
4262         case BAR_RX_EVENT:
4263                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4264                 break;
4265         case BA_FRAME_TIMEOUT:
4266                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4267                 break;
4268         default:
4269                 break;
4270         }
4271 }
4272
4273 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4274                                      struct iwl_mvm_internal_rxq_notif *notif,
4275                                      u32 size)
4276 {
4277         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4278         int ret;
4279
4280         lockdep_assert_held(&mvm->mutex);
4281
4282         /* TODO - remove a000 disablement when we have RXQ config API */
4283         if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4284                 return;
4285
4286         notif->cookie = mvm->queue_sync_cookie;
4287
4288         if (notif->sync)
4289                 atomic_set(&mvm->queue_sync_counter,
4290                            mvm->trans->num_rx_queues);
4291
4292         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4293         if (ret) {
4294                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4295                 goto out;
4296         }
4297
4298         if (notif->sync) {
4299                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4300                                          atomic_read(&mvm->queue_sync_counter) == 0 ||
4301                                          iwl_mvm_is_radio_killed(mvm),
4302                                          HZ);
4303                 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4304         }
4305
4306 out:
4307         atomic_set(&mvm->queue_sync_counter, 0);
4308         mvm->queue_sync_cookie++;
4309 }
4310
4311 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4312 {
4313         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4314         struct iwl_mvm_internal_rxq_notif data = {
4315                 .type = IWL_MVM_RXQ_EMPTY,
4316                 .sync = 1,
4317         };
4318
4319         mutex_lock(&mvm->mutex);
4320         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4321         mutex_unlock(&mvm->mutex);
4322 }
4323
4324 const struct ieee80211_ops iwl_mvm_hw_ops = {
4325         .tx = iwl_mvm_mac_tx,
4326         .ampdu_action = iwl_mvm_mac_ampdu_action,
4327         .start = iwl_mvm_mac_start,
4328         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4329         .stop = iwl_mvm_mac_stop,
4330         .add_interface = iwl_mvm_mac_add_interface,
4331         .remove_interface = iwl_mvm_mac_remove_interface,
4332         .config = iwl_mvm_mac_config,
4333         .prepare_multicast = iwl_mvm_prepare_multicast,
4334         .configure_filter = iwl_mvm_configure_filter,
4335         .config_iface_filter = iwl_mvm_config_iface_filter,
4336         .bss_info_changed = iwl_mvm_bss_info_changed,
4337         .hw_scan = iwl_mvm_mac_hw_scan,
4338         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4339         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4340         .sta_state = iwl_mvm_mac_sta_state,
4341         .sta_notify = iwl_mvm_mac_sta_notify,
4342         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4343         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4344         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4345         .sta_rc_update = iwl_mvm_sta_rc_update,
4346         .conf_tx = iwl_mvm_mac_conf_tx,
4347         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4348         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4349         .flush = iwl_mvm_mac_flush,
4350         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4351         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4352         .set_key = iwl_mvm_mac_set_key,
4353         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4354         .remain_on_channel = iwl_mvm_roc,
4355         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4356         .add_chanctx = iwl_mvm_add_chanctx,
4357         .remove_chanctx = iwl_mvm_remove_chanctx,
4358         .change_chanctx = iwl_mvm_change_chanctx,
4359         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4360         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4361         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4362
4363         .start_ap = iwl_mvm_start_ap_ibss,
4364         .stop_ap = iwl_mvm_stop_ap_ibss,
4365         .join_ibss = iwl_mvm_start_ap_ibss,
4366         .leave_ibss = iwl_mvm_stop_ap_ibss,
4367
4368         .tx_last_beacon = iwl_mvm_tx_last_beacon,
4369
4370         .set_tim = iwl_mvm_set_tim,
4371
4372         .channel_switch = iwl_mvm_channel_switch,
4373         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4374         .post_channel_switch = iwl_mvm_post_channel_switch,
4375
4376         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4377         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4378         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4379
4380         .event_callback = iwl_mvm_mac_event_callback,
4381
4382         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4383
4384         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4385
4386 #ifdef CONFIG_PM_SLEEP
4387         /* look at d3.c */
4388         .suspend = iwl_mvm_suspend,
4389         .resume = iwl_mvm_resume,
4390         .set_wakeup = iwl_mvm_set_wakeup,
4391         .set_rekey_data = iwl_mvm_set_rekey_data,
4392 #if IS_ENABLED(CONFIG_IPV6)
4393         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4394 #endif
4395         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4396 #endif
4397         .get_survey = iwl_mvm_mac_get_survey,
4398         .sta_statistics = iwl_mvm_mac_sta_statistics,
4399 };