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 - 2014 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
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  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 - 2014 Intel Mobile Communications GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
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  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
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  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
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  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  58  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  59  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/kernel.h>
  67 #include <linux/slab.h>
  68 #include <linux/skbuff.h>
  69 #include <linux/netdevice.h>
  70 #include <linux/etherdevice.h>
  71 #include <linux/ip.h>
  72 #include <linux/if_arp.h>
  73 #include <linux/time.h>
  74 #include <net/mac80211.h>
  75 #include <net/ieee80211_radiotap.h>
  76 #include <net/tcp.h>
  77
  78 #include "iwl-op-mode.h"
  79 #include "iwl-io.h"
  80 #include "mvm.h"
  81 #include "sta.h"
  82 #include "time-event.h"
  83 #include "iwl-eeprom-parse.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88 #include "iwl-nvm-parse.h"
  89 #include "fw-dbg.h"
  90
  91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_STATION),
  95         },
  96         {
  97                 .max = 1,
  98                 .types = BIT(NL80211_IFTYPE_AP) |
  99                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 100                         BIT(NL80211_IFTYPE_P2P_GO),
 101         },
 102         {
 103                 .max = 1,
 104                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 105         },
 106 };
 107
 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 109         {
 110                 .num_different_channels = 2,
 111                 .max_interfaces = 3,
 112                 .limits = iwl_mvm_limits,
 113                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 114         },
 115 };
 116
 117 #ifdef CONFIG_PM_SLEEP
 118 static const struct nl80211_wowlan_tcp_data_token_feature
 119 iwl_mvm_wowlan_tcp_token_feature = {
 120         .min_len = 0,
 121         .max_len = 255,
 122         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 123 };
 124
 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 126         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 127         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 128                             sizeof(struct ethhdr) -
 129                             sizeof(struct iphdr) -
 130                             sizeof(struct tcphdr),
 131         .data_interval_max = 65535, /* __le16 in API */
 132         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 133                             sizeof(struct ethhdr) -
 134                             sizeof(struct iphdr) -
 135                             sizeof(struct tcphdr),
 136         .seq = true,
 137 };
 138 #endif
 139
 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 141 /*
 142  * Use the reserved field to indicate magic values.
 143  * these values will only be used internally by the driver,
 144  * and won't make it to the fw (reserved will be 0).
 145  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 146  *      be the vif's ip address. in case there is not a single
 147  *      ip address (0, or more than 1), this attribute will
 148  *      be skipped.
 149  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 150  *      the LSB bytes of the vif's mac address
 151  */
 152 enum {
 153         BC_FILTER_MAGIC_NONE = 0,
 154         BC_FILTER_MAGIC_IP,
 155         BC_FILTER_MAGIC_MAC,
 156 };
 157
 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 159         {
 160                 /* arp */
 161                 .discard = 0,
 162                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 163                 .attrs = {
 164                         {
 165                                 /* frame type - arp, hw type - ethernet */
 166                                 .offset_type =
 167                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 168                                 .offset = sizeof(rfc1042_header),
 169                                 .val = cpu_to_be32(0x08060001),
 170                                 .mask = cpu_to_be32(0xffffffff),
 171                         },
 172                         {
 173                                 /* arp dest ip */
 174                                 .offset_type =
 175                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 176                                 .offset = sizeof(rfc1042_header) + 2 +
 177                                           sizeof(struct arphdr) +
 178                                           ETH_ALEN + sizeof(__be32) +
 179                                           ETH_ALEN,
 180                                 .mask = cpu_to_be32(0xffffffff),
 181                                 /* mark it as special field */
 182                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 183                         },
 184                 },
 185         },
 186         {
 187                 /* dhcp offer bcast */
 188                 .discard = 0,
 189                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 190                 .attrs = {
 191                         {
 192                                 /* udp dest port - 68 (bootp client)*/
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = offsetof(struct udphdr, dest),
 195                                 .val = cpu_to_be32(0x00440000),
 196                                 .mask = cpu_to_be32(0xffff0000),
 197                         },
 198                         {
 199                                 /* dhcp - lsb bytes of client hw address */
 200                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 201                                 .offset = 38,
 202                                 .mask = cpu_to_be32(0xffffffff),
 203                                 /* mark it as special field */
 204                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 205                         },
 206                 },
 207         },
 208         /* last filter must be empty */
 209         {},
 210 };
 211 #endif
 212
 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 214 {
 215         if (!iwl_mvm_is_d0i3_supported(mvm))
 216                 return;
 217
 218         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 219         spin_lock_bh(&mvm->refs_lock);
 220         mvm->refs[ref_type]++;
 221         spin_unlock_bh(&mvm->refs_lock);
 222         iwl_trans_ref(mvm->trans);
 223 }
 224
 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 226 {
 227         if (!iwl_mvm_is_d0i3_supported(mvm))
 228                 return;
 229
 230         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 231         spin_lock_bh(&mvm->refs_lock);
 232         WARN_ON(!mvm->refs[ref_type]--);
 233         spin_unlock_bh(&mvm->refs_lock);
 234         iwl_trans_unref(mvm->trans);
 235 }
 236
 237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 238                                      enum iwl_mvm_ref_type except_ref)
 239 {
 240         int i, j;
 241
 242         if (!iwl_mvm_is_d0i3_supported(mvm))
 243                 return;
 244
 245         spin_lock_bh(&mvm->refs_lock);
 246         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 247                 if (except_ref == i || !mvm->refs[i])
 248                         continue;
 249
 250                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 251                               i, mvm->refs[i]);
 252                 for (j = 0; j < mvm->refs[i]; j++)
 253                         iwl_trans_unref(mvm->trans);
 254                 mvm->refs[i] = 0;
 255         }
 256         spin_unlock_bh(&mvm->refs_lock);
 257 }
 258
 259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 260 {
 261         int i;
 262         bool taken = false;
 263
 264         if (!iwl_mvm_is_d0i3_supported(mvm))
 265                 return true;
 266
 267         spin_lock_bh(&mvm->refs_lock);
 268         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 269                 if (mvm->refs[i]) {
 270                         taken = true;
 271                         break;
 272                 }
 273         }
 274         spin_unlock_bh(&mvm->refs_lock);
 275
 276         return taken;
 277 }
 278
 279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 280 {
 281         iwl_mvm_ref(mvm, ref_type);
 282
 283         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 284                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 285                                 HZ)) {
 286                 WARN_ON_ONCE(1);
 287                 iwl_mvm_unref(mvm, ref_type);
 288                 return -EIO;
 289         }
 290
 291         return 0;
 292 }
 293
 294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 295 {
 296         int i;
 297
 298         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 299         for (i = 0; i < NUM_PHY_CTX; i++) {
 300                 mvm->phy_ctxts[i].id = i;
 301                 mvm->phy_ctxts[i].ref = 0;
 302         }
 303 }
 304
 305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 306                                                   const char *alpha2,
 307                                                   enum iwl_mcc_source src_id,
 308                                                   bool *changed)
 309 {
 310         struct ieee80211_regdomain *regd = NULL;
 311         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 313         struct iwl_mcc_update_resp *resp;
 314
 315         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 316
 317         lockdep_assert_held(&mvm->mutex);
 318
 319         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 320         if (IS_ERR_OR_NULL(resp)) {
 321                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 322                               PTR_ERR_OR_ZERO(resp));
 323                 goto out;
 324         }
 325
 326         if (changed)
 327                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 328
 329         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 330                                       __le32_to_cpu(resp->n_channels),
 331                                       resp->channels,
 332                                       __le16_to_cpu(resp->mcc));
 333         /* Store the return source id */
 334         src_id = resp->source_id;
 335         kfree(resp);
 336         if (IS_ERR_OR_NULL(regd)) {
 337                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 338                               PTR_ERR_OR_ZERO(regd));
 339                 goto out;
 340         }
 341
 342         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 343                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 344         mvm->lar_regdom_set = true;
 345         mvm->mcc_src = src_id;
 346
 347 out:
 348         return regd;
 349 }
 350
 351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 352 {
 353         bool changed;
 354         struct ieee80211_regdomain *regd;
 355
 356         if (!iwl_mvm_is_lar_supported(mvm))
 357                 return;
 358
 359         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 360         if (!IS_ERR_OR_NULL(regd)) {
 361                 /* only update the regulatory core if changed */
 362                 if (changed)
 363                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 364
 365                 kfree(regd);
 366         }
 367 }
 368
 369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 370                                                           bool *changed)
 371 {
 372         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 373                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 374                                      MCC_SOURCE_GET_CURRENT :
 375                                      MCC_SOURCE_OLD_FW, changed);
 376 }
 377
 378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 379 {
 380         enum iwl_mcc_source used_src;
 381         struct ieee80211_regdomain *regd;
 382         int ret;
 383         bool changed;
 384         const struct ieee80211_regdomain *r =
 385                         rtnl_dereference(mvm->hw->wiphy->regd);
 386
 387         if (!r)
 388                 return -ENOENT;
 389
 390         /* save the last source in case we overwrite it below */
 391         used_src = mvm->mcc_src;
 392         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 393                 /* Notify the firmware we support wifi location updates */
 394                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 395                 if (!IS_ERR_OR_NULL(regd))
 396                         kfree(regd);
 397         }
 398
 399         /* Now set our last stored MCC and source */
 400         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 401                                      &changed);
 402         if (IS_ERR_OR_NULL(regd))
 403                 return -EIO;
 404
 405         /* update cfg80211 if the regdomain was changed */
 406         if (changed)
 407                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 408         else
 409                 ret = 0;
 410
 411         kfree(regd);
 412         return ret;
 413 }
 414
 415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 416 {
 417         struct ieee80211_hw *hw = mvm->hw;
 418         int num_mac, ret, i;
 419         static const u32 mvm_ciphers[] = {
 420                 WLAN_CIPHER_SUITE_WEP40,
 421                 WLAN_CIPHER_SUITE_WEP104,
 422                 WLAN_CIPHER_SUITE_TKIP,
 423                 WLAN_CIPHER_SUITE_CCMP,
 424         };
 425
 426         /* Tell mac80211 our characteristics */
 427         ieee80211_hw_set(hw, SIGNAL_DBM);
 428         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 429         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 430         ieee80211_hw_set(hw, QUEUE_CONTROL);
 431         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 432         ieee80211_hw_set(hw, SUPPORTS_PS);
 433         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 434         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 435         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 436         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 437         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 438         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 439         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 440         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 441         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 442
 443         if (mvm->trans->max_skb_frags)
 444                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 445
 446         hw->queues = mvm->first_agg_queue;
 447         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 448         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 449                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 450         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 451                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 452         hw->rate_control_algorithm = "iwl-mvm-rs";
 453         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 454         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 455
 456         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
 457         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 458         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 459         hw->wiphy->cipher_suites = mvm->ciphers;
 460
 461         /*
 462          * Enable 11w if advertised by firmware and software crypto
 463          * is not enabled (as the firmware will interpret some mgmt
 464          * packets, so enabling it with software crypto isn't safe)
 465          */
 466         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 467             !iwlwifi_mod_params.sw_crypto) {
 468                 ieee80211_hw_set(hw, MFP_CAPABLE);
 469                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 470                         WLAN_CIPHER_SUITE_AES_CMAC;
 471                 hw->wiphy->n_cipher_suites++;
 472         }
 473
 474         /* currently FW API supports only one optional cipher scheme */
 475         if (mvm->fw->cs[0].cipher) {
 476                 mvm->hw->n_cipher_schemes = 1;
 477                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 478                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 479                         mvm->fw->cs[0].cipher;
 480                 hw->wiphy->n_cipher_suites++;
 481         }
 482
 483         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 484         hw->wiphy->features |=
 485                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 486                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 487                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 488
 489         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 490         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 491         hw->chanctx_data_size = sizeof(u16);
 492
 493         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 494                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 495                 BIT(NL80211_IFTYPE_AP) |
 496                 BIT(NL80211_IFTYPE_P2P_GO) |
 497                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 498                 BIT(NL80211_IFTYPE_ADHOC);
 499
 500         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 501         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 502         if (iwl_mvm_is_lar_supported(mvm))
 503                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 504         else
 505                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 506                                                REGULATORY_DISABLE_BEACON_HINTS;
 507
 508         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 509                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 510
 511         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 512
 513         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 514         hw->wiphy->n_iface_combinations =
 515                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 516
 517         hw->wiphy->max_remain_on_channel_duration = 10000;
 518         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 519         /* we can compensate an offset of up to 3 channels = 15 MHz */
 520         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 521
 522         /* Extract MAC address */
 523         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 524         hw->wiphy->addresses = mvm->addresses;
 525         hw->wiphy->n_addresses = 1;
 526
 527         /* Extract additional MAC addresses if available */
 528         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 529                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 530
 531         for (i = 1; i < num_mac; i++) {
 532                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 533                        ETH_ALEN);
 534                 mvm->addresses[i].addr[5]++;
 535                 hw->wiphy->n_addresses++;
 536         }
 537
 538         iwl_mvm_reset_phy_ctxts(mvm);
 539
 540         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 541
 542         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 543
 544         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 545         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 546                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 547
 548         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 549                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 550         else
 551                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 552
 553         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 554                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 555                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 556         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 557                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 558                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 559
 560                 if (fw_has_capa(&mvm->fw->ucode_capa,
 561                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 562                     fw_has_api(&mvm->fw->ucode_capa,
 563                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 564                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 565                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 566         }
 567
 568         hw->wiphy->hw_version = mvm->trans->hw_id;
 569
 570         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 571                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 572         else
 573                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 574
 575         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 576         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 577         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 578         /* we create the 802.11 header and zero length SSID IE. */
 579         hw->wiphy->max_sched_scan_ie_len =
 580                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 581         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 582         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 583
 584         /*
 585          * the firmware uses u8 for num of iterations, but 0xff is saved for
 586          * infinite loop, so the maximum number of iterations is actually 254.
 587          */
 588         hw->wiphy->max_sched_scan_plan_iterations = 254;
 589
 590         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 591                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 592                                NL80211_FEATURE_P2P_GO_OPPPS |
 593                                NL80211_FEATURE_DYNAMIC_SMPS |
 594                                NL80211_FEATURE_STATIC_SMPS |
 595                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 596
 597         if (fw_has_capa(&mvm->fw->ucode_capa,
 598                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 599                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 600         if (fw_has_capa(&mvm->fw->ucode_capa,
 601                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 602                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 603
 604         if (fw_has_capa(&mvm->fw->ucode_capa,
 605                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 606                 hw->wiphy->features |=
 607                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 608
 609         if (fw_has_capa(&mvm->fw->ucode_capa,
 610                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 611                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 612
 613         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_RRM);
 614
 615         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 616
 617 #ifdef CONFIG_PM_SLEEP
 618         if (iwl_mvm_is_d0i3_supported(mvm) &&
 619             device_can_wakeup(mvm->trans->dev)) {
 620                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 621                 hw->wiphy->wowlan = &mvm->wowlan;
 622         }
 623
 624         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 625             mvm->trans->ops->d3_suspend &&
 626             mvm->trans->ops->d3_resume &&
 627             device_can_wakeup(mvm->trans->dev)) {
 628                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 629                                      WIPHY_WOWLAN_DISCONNECT |
 630                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 631                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 632                                      WIPHY_WOWLAN_NET_DETECT;
 633                 if (!iwlwifi_mod_params.sw_crypto)
 634                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 635                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 636                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 637
 638                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 639                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 640                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 641                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 642                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 643                 hw->wiphy->wowlan = &mvm->wowlan;
 644         }
 645 #endif
 646
 647 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 648         /* assign default bcast filtering configuration */
 649         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 650 #endif
 651
 652         ret = iwl_mvm_leds_init(mvm);
 653         if (ret)
 654                 return ret;
 655
 656         if (fw_has_capa(&mvm->fw->ucode_capa,
 657                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 658                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 659                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 660                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 661         }
 662
 663         if (fw_has_capa(&mvm->fw->ucode_capa,
 664                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 665                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 666                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 667         }
 668
 669         hw->netdev_features |= mvm->cfg->features;
 670         if (!iwl_mvm_is_csum_supported(mvm))
 671                 hw->netdev_features &= ~NETIF_F_RXCSUM;
 672
 673         if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 674                 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 675                         NETIF_F_TSO | NETIF_F_TSO6;
 676
 677         ret = ieee80211_register_hw(mvm->hw);
 678         if (ret)
 679                 iwl_mvm_leds_exit(mvm);
 680
 681         return ret;
 682 }
 683
 684 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 685                              struct ieee80211_sta *sta,
 686                              struct sk_buff *skb)
 687 {
 688         struct iwl_mvm_sta *mvmsta;
 689         bool defer = false;
 690
 691         /*
 692          * double check the IN_D0I3 flag both before and after
 693          * taking the spinlock, in order to prevent taking
 694          * the spinlock when not needed.
 695          */
 696         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 697                 return false;
 698
 699         spin_lock(&mvm->d0i3_tx_lock);
 700         /*
 701          * testing the flag again ensures the skb dequeue
 702          * loop (on d0i3 exit) hasn't run yet.
 703          */
 704         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 705                 goto out;
 706
 707         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 708         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 709             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 710                 goto out;
 711
 712         __skb_queue_tail(&mvm->d0i3_tx, skb);
 713         ieee80211_stop_queues(mvm->hw);
 714
 715         /* trigger wakeup */
 716         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 717         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 718
 719         defer = true;
 720 out:
 721         spin_unlock(&mvm->d0i3_tx_lock);
 722         return defer;
 723 }
 724
 725 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 726                            struct ieee80211_tx_control *control,
 727                            struct sk_buff *skb)
 728 {
 729         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 730         struct ieee80211_sta *sta = control->sta;
 731         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 732         struct ieee80211_hdr *hdr = (void *)skb->data;
 733
 734         if (iwl_mvm_is_radio_killed(mvm)) {
 735                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 736                 goto drop;
 737         }
 738
 739         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 740             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 741             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 742                 goto drop;
 743
 744         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 745         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 746                      ieee80211_is_mgmt(hdr->frame_control) &&
 747                      !ieee80211_is_deauth(hdr->frame_control) &&
 748                      !ieee80211_is_disassoc(hdr->frame_control) &&
 749                      !ieee80211_is_action(hdr->frame_control)))
 750                 sta = NULL;
 751
 752         if (sta) {
 753                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 754                         return;
 755                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 756                         goto drop;
 757                 return;
 758         }
 759
 760         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 761                 goto drop;
 762         return;
 763  drop:
 764         ieee80211_free_txskb(hw, skb);
 765 }
 766
 767 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 768 {
 769         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 770                 return false;
 771         return true;
 772 }
 773
 774 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 775 {
 776         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 777                 return false;
 778         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 779                 return true;
 780
 781         /* enabled by default */
 782         return true;
 783 }
 784
 785 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 786         do {                                                    \
 787                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 788                         break;                                  \
 789                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 790         } while (0)
 791
 792 static void
 793 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 794                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 795                             enum ieee80211_ampdu_mlme_action action)
 796 {
 797         struct iwl_fw_dbg_trigger_tlv *trig;
 798         struct iwl_fw_dbg_trigger_ba *ba_trig;
 799
 800         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 801                 return;
 802
 803         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 804         ba_trig = (void *)trig->data;
 805
 806         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 807                 return;
 808
 809         switch (action) {
 810         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 811                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 812                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 813
 814                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 815                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 816                                  sta->addr, tid, tid_data->ssn);
 817                 break;
 818                 }
 819         case IEEE80211_AMPDU_TX_STOP_CONT:
 820                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 821                                  "TX AGG STOP: MAC %pM tid %d\n",
 822                                  sta->addr, tid);
 823                 break;
 824         case IEEE80211_AMPDU_RX_START:
 825                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 826                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 827                                  sta->addr, tid, rx_ba_ssn);
 828                 break;
 829         case IEEE80211_AMPDU_RX_STOP:
 830                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 831                                  "RX AGG STOP: MAC %pM tid %d\n",
 832                                  sta->addr, tid);
 833                 break;
 834         default:
 835                 break;
 836         }
 837 }
 838
 839 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 840                                     struct ieee80211_vif *vif,
 841                                     struct ieee80211_ampdu_params *params)
 842 {
 843         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 844         int ret;
 845         bool tx_agg_ref = false;
 846         struct ieee80211_sta *sta = params->sta;
 847         enum ieee80211_ampdu_mlme_action action = params->action;
 848         u16 tid = params->tid;
 849         u16 *ssn = &params->ssn;
 850         u8 buf_size = params->buf_size;
 851         bool amsdu = params->amsdu;
 852
 853         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 854                      sta->addr, tid, action);
 855
 856         if (!(mvm->nvm_data->sku_cap_11n_enable))
 857                 return -EACCES;
 858
 859         /* return from D0i3 before starting a new Tx aggregation */
 860         switch (action) {
 861         case IEEE80211_AMPDU_TX_START:
 862         case IEEE80211_AMPDU_TX_STOP_CONT:
 863         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 864         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 865         case IEEE80211_AMPDU_TX_OPERATIONAL:
 866                 /*
 867                  * for tx start, wait synchronously until D0i3 exit to
 868                  * get the correct sequence number for the tid.
 869                  * additionally, some other ampdu actions use direct
 870                  * target access, which is not handled automatically
 871                  * by the trans layer (unlike commands), so wait for
 872                  * d0i3 exit in these cases as well.
 873                  */
 874                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 875                 if (ret)
 876                         return ret;
 877
 878                 tx_agg_ref = true;
 879                 break;
 880         default:
 881                 break;
 882         }
 883
 884         mutex_lock(&mvm->mutex);
 885
 886         switch (action) {
 887         case IEEE80211_AMPDU_RX_START:
 888                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 889                         ret = -EINVAL;
 890                         break;
 891                 }
 892                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
 893                 break;
 894         case IEEE80211_AMPDU_RX_STOP:
 895                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
 896                 break;
 897         case IEEE80211_AMPDU_TX_START:
 898                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 899                         ret = -EINVAL;
 900                         break;
 901                 }
 902                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 903                 break;
 904         case IEEE80211_AMPDU_TX_STOP_CONT:
 905                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 906                 break;
 907         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 908         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 909                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 910                 break;
 911         case IEEE80211_AMPDU_TX_OPERATIONAL:
 912                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 913                                               buf_size, amsdu);
 914                 break;
 915         default:
 916                 WARN_ON_ONCE(1);
 917                 ret = -EINVAL;
 918                 break;
 919         }
 920
 921         if (!ret) {
 922                 u16 rx_ba_ssn = 0;
 923
 924                 if (action == IEEE80211_AMPDU_RX_START)
 925                         rx_ba_ssn = *ssn;
 926
 927                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 928                                             rx_ba_ssn, action);
 929         }
 930         mutex_unlock(&mvm->mutex);
 931
 932         /*
 933          * If the tid is marked as started, we won't use it for offloaded
 934          * traffic on the next D0i3 entry. It's safe to unref.
 935          */
 936         if (tx_agg_ref)
 937                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 938
 939         return ret;
 940 }
 941
 942 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 943                                      struct ieee80211_vif *vif)
 944 {
 945         struct iwl_mvm *mvm = data;
 946         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 947
 948         mvmvif->uploaded = false;
 949         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 950
 951         spin_lock_bh(&mvm->time_event_lock);
 952         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 953         spin_unlock_bh(&mvm->time_event_lock);
 954
 955         mvmvif->phy_ctxt = NULL;
 956         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 957 }
 958
 959 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 960 {
 961         /* clear the D3 reconfig, we only need it to avoid dumping a
 962          * firmware coredump on reconfiguration, we shouldn't do that
 963          * on D3->D0 transition
 964          */
 965         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 966                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 967                 iwl_mvm_fw_error_dump(mvm);
 968         }
 969
 970         /* cleanup all stale references (scan, roc), but keep the
 971          * ucode_down ref until reconfig is complete
 972          */
 973         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 974
 975         iwl_trans_stop_device(mvm->trans);
 976
 977         mvm->scan_status = 0;
 978         mvm->ps_disabled = false;
 979         mvm->calibrating = false;
 980
 981         /* just in case one was running */
 982         iwl_mvm_cleanup_roc_te(mvm);
 983         ieee80211_remain_on_channel_expired(mvm->hw);
 984
 985         /*
 986          * cleanup all interfaces, even inactive ones, as some might have
 987          * gone down during the HW restart
 988          */
 989         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 990
 991         mvm->p2p_device_vif = NULL;
 992         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 993
 994         iwl_mvm_reset_phy_ctxts(mvm);
 995         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 996         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 997         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 998         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 999         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1000         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1001         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1002         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1003         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1004
1005         ieee80211_wake_queues(mvm->hw);
1006
1007         /* clear any stale d0i3 state */
1008         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1009
1010         mvm->vif_count = 0;
1011         mvm->rx_ba_sessions = 0;
1012         mvm->fw_dbg_conf = FW_DBG_INVALID;
1013
1014         /* keep statistics ticking */
1015         iwl_mvm_accu_radio_stats(mvm);
1016 }
1017
1018 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1019 {
1020         int ret;
1021
1022         lockdep_assert_held(&mvm->mutex);
1023
1024         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1025                 /* Clean up some internal and mac80211 state on restart */
1026                 iwl_mvm_restart_cleanup(mvm);
1027         } else {
1028                 /* Hold the reference to prevent runtime suspend while
1029                  * the start procedure runs.  It's a bit confusing
1030                  * that the UCODE_DOWN reference is taken, but it just
1031                  * means "UCODE is not UP yet". ( TODO: rename this
1032                  * reference).
1033                  */
1034                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1035         }
1036         ret = iwl_mvm_up(mvm);
1037
1038         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1039                 /* Something went wrong - we need to finish some cleanup
1040                  * that normally iwl_mvm_mac_restart_complete() below
1041                  * would do.
1042                  */
1043                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1044                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1045         }
1046
1047         return ret;
1048 }
1049
1050 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1051 {
1052         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1053         int ret;
1054
1055         /* Some hw restart cleanups must not hold the mutex */
1056         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1057                 /*
1058                  * Make sure we are out of d0i3. This is needed
1059                  * to make sure the reference accounting is correct
1060                  * (and there is no stale d0i3_exit_work).
1061                  */
1062                 wait_event_timeout(mvm->d0i3_exit_waitq,
1063                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1064                                              &mvm->status),
1065                                    HZ);
1066         }
1067
1068         mutex_lock(&mvm->mutex);
1069         ret = __iwl_mvm_mac_start(mvm);
1070         mutex_unlock(&mvm->mutex);
1071
1072         return ret;
1073 }
1074
1075 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1076 {
1077         int ret;
1078
1079         mutex_lock(&mvm->mutex);
1080
1081         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1082         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1083         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1084         if (ret)
1085                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1086                         ret);
1087
1088         /* allow transport/FW low power modes */
1089         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1090
1091         /*
1092          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1093          * of packets the FW sent out, so we must reconnect.
1094          */
1095         iwl_mvm_teardown_tdls_peers(mvm);
1096
1097         mutex_unlock(&mvm->mutex);
1098 }
1099
1100 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1101 {
1102         if (iwl_mvm_is_d0i3_supported(mvm) &&
1103             iwl_mvm_enter_d0i3_on_suspend(mvm))
1104                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1105                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1106                                                         &mvm->status),
1107                                               HZ),
1108                           "D0i3 exit on resume timed out\n");
1109 }
1110
1111 static void
1112 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1113                               enum ieee80211_reconfig_type reconfig_type)
1114 {
1115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117         switch (reconfig_type) {
1118         case IEEE80211_RECONFIG_TYPE_RESTART:
1119                 iwl_mvm_restart_complete(mvm);
1120                 break;
1121         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1122                 iwl_mvm_resume_complete(mvm);
1123                 break;
1124         }
1125 }
1126
1127 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1128 {
1129         lockdep_assert_held(&mvm->mutex);
1130
1131         /* firmware counters are obviously reset now, but we shouldn't
1132          * partially track so also clear the fw_reset_accu counters.
1133          */
1134         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1135
1136         /* async_handlers_wk is now blocked */
1137
1138         /*
1139          * The work item could be running or queued if the
1140          * ROC time event stops just as we get here.
1141          */
1142         flush_work(&mvm->roc_done_wk);
1143
1144         iwl_trans_stop_device(mvm->trans);
1145
1146         iwl_mvm_async_handlers_purge(mvm);
1147         /* async_handlers_list is empty and will stay empty: HW is stopped */
1148
1149         /* the fw is stopped, the aux sta is dead: clean up driver state */
1150         iwl_mvm_del_aux_sta(mvm);
1151
1152         /*
1153          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1154          * won't be called in this case).
1155          * But make sure to cleanup interfaces that have gone down before/during
1156          * HW restart was requested.
1157          */
1158         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1159                 ieee80211_iterate_interfaces(mvm->hw, 0,
1160                                              iwl_mvm_cleanup_iterator, mvm);
1161
1162         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1163          * make sure there's nothing left there and warn if any is found.
1164          */
1165         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1166                 int i;
1167
1168                 for (i = 0; i < mvm->max_scans; i++) {
1169                         if (WARN_ONCE(mvm->scan_uid_status[i],
1170                                       "UMAC scan UID %d status was not cleaned\n",
1171                                       i))
1172                                 mvm->scan_uid_status[i] = 0;
1173                 }
1174         }
1175
1176         mvm->ucode_loaded = false;
1177 }
1178
1179 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1180 {
1181         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1182
1183         flush_work(&mvm->d0i3_exit_work);
1184         flush_work(&mvm->async_handlers_wk);
1185         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1186         iwl_mvm_free_fw_dump_desc(mvm);
1187
1188         mutex_lock(&mvm->mutex);
1189         __iwl_mvm_mac_stop(mvm);
1190         mutex_unlock(&mvm->mutex);
1191
1192         /*
1193          * The worker might have been waiting for the mutex, let it run and
1194          * discover that its list is now empty.
1195          */
1196         cancel_work_sync(&mvm->async_handlers_wk);
1197 }
1198
1199 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1200 {
1201         u16 i;
1202
1203         lockdep_assert_held(&mvm->mutex);
1204
1205         for (i = 0; i < NUM_PHY_CTX; i++)
1206                 if (!mvm->phy_ctxts[i].ref)
1207                         return &mvm->phy_ctxts[i];
1208
1209         IWL_ERR(mvm, "No available PHY context\n");
1210         return NULL;
1211 }
1212
1213 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1214                                 s16 tx_power)
1215 {
1216         struct iwl_dev_tx_power_cmd cmd = {
1217                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1218                 .v2.mac_context_id =
1219                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1220                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1221         };
1222         int len = sizeof(cmd);
1223
1224         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1225                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1226
1227         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1228                 len = sizeof(cmd.v2);
1229
1230         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1231 }
1232
1233 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1234                                      struct ieee80211_vif *vif)
1235 {
1236         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1237         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1238         int ret;
1239
1240         mvmvif->mvm = mvm;
1241
1242         /*
1243          * make sure D0i3 exit is completed, otherwise a target access
1244          * during tx queue configuration could be done when still in
1245          * D0i3 state.
1246          */
1247         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1248         if (ret)
1249                 return ret;
1250
1251         /*
1252          * Not much to do here. The stack will not allow interface
1253          * types or combinations that we didn't advertise, so we
1254          * don't really have to check the types.
1255          */
1256
1257         mutex_lock(&mvm->mutex);
1258
1259         /* make sure that beacon statistics don't go backwards with FW reset */
1260         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1261                 mvmvif->beacon_stats.accu_num_beacons +=
1262                         mvmvif->beacon_stats.num_beacons;
1263
1264         /* Allocate resources for the MAC context, and add it to the fw  */
1265         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1266         if (ret)
1267                 goto out_unlock;
1268
1269         /* Counting number of interfaces is needed for legacy PM */
1270         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1271                 mvm->vif_count++;
1272
1273         /*
1274          * The AP binding flow can be done only after the beacon
1275          * template is configured (which happens only in the mac80211
1276          * start_ap() flow), and adding the broadcast station can happen
1277          * only after the binding.
1278          * In addition, since modifying the MAC before adding a bcast
1279          * station is not allowed by the FW, delay the adding of MAC context to
1280          * the point where we can also add the bcast station.
1281          * In short: there's not much we can do at this point, other than
1282          * allocating resources :)
1283          */
1284         if (vif->type == NL80211_IFTYPE_AP ||
1285             vif->type == NL80211_IFTYPE_ADHOC) {
1286                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1287                 if (ret) {
1288                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1289                         goto out_release;
1290                 }
1291
1292                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1293                 goto out_unlock;
1294         }
1295
1296         mvmvif->features |= hw->netdev_features;
1297
1298         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1299         if (ret)
1300                 goto out_release;
1301
1302         ret = iwl_mvm_power_update_mac(mvm);
1303         if (ret)
1304                 goto out_remove_mac;
1305
1306         /* beacon filtering */
1307         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1308         if (ret)
1309                 goto out_remove_mac;
1310
1311         if (!mvm->bf_allowed_vif &&
1312             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1313                 mvm->bf_allowed_vif = mvmvif;
1314                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1315                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1316         }
1317
1318         /*
1319          * P2P_DEVICE interface does not have a channel context assigned to it,
1320          * so a dedicated PHY context is allocated to it and the corresponding
1321          * MAC context is bound to it at this stage.
1322          */
1323         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1324
1325                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1326                 if (!mvmvif->phy_ctxt) {
1327                         ret = -ENOSPC;
1328                         goto out_free_bf;
1329                 }
1330
1331                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1332                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1333                 if (ret)
1334                         goto out_unref_phy;
1335
1336                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1337                 if (ret)
1338                         goto out_unbind;
1339
1340                 /* Save a pointer to p2p device vif, so it can later be used to
1341                  * update the p2p device MAC when a GO is started/stopped */
1342                 mvm->p2p_device_vif = vif;
1343         }
1344
1345         iwl_mvm_vif_dbgfs_register(mvm, vif);
1346         goto out_unlock;
1347
1348  out_unbind:
1349         iwl_mvm_binding_remove_vif(mvm, vif);
1350  out_unref_phy:
1351         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1352  out_free_bf:
1353         if (mvm->bf_allowed_vif == mvmvif) {
1354                 mvm->bf_allowed_vif = NULL;
1355                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1356                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1357         }
1358  out_remove_mac:
1359         mvmvif->phy_ctxt = NULL;
1360         iwl_mvm_mac_ctxt_remove(mvm, vif);
1361  out_release:
1362         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1363                 mvm->vif_count--;
1364
1365         iwl_mvm_mac_ctxt_release(mvm, vif);
1366  out_unlock:
1367         mutex_unlock(&mvm->mutex);
1368
1369         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1370
1371         return ret;
1372 }
1373
1374 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1375                                         struct ieee80211_vif *vif)
1376 {
1377         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1378
1379         if (tfd_msk) {
1380                 /*
1381                  * mac80211 first removes all the stations of the vif and
1382                  * then removes the vif. When it removes a station it also
1383                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1384                  * of all the stations of this vif are closed, and the queues
1385                  * of these AMPDU sessions are properly closed.
1386                  * We still need to take care of the shared queues of the vif.
1387                  * Flush them here.
1388                  */
1389                 mutex_lock(&mvm->mutex);
1390                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1391                 mutex_unlock(&mvm->mutex);
1392
1393                 /*
1394                  * There are transports that buffer a few frames in the host.
1395                  * For these, the flush above isn't enough since while we were
1396                  * flushing, the transport might have sent more frames to the
1397                  * device. To solve this, wait here until the transport is
1398                  * empty. Technically, this could have replaced the flush
1399                  * above, but flush is much faster than draining. So flush
1400                  * first, and drain to make sure we have no frames in the
1401                  * transport anymore.
1402                  * If a station still had frames on the shared queues, it is
1403                  * already marked as draining, so to complete the draining, we
1404                  * just need to wait until the transport is empty.
1405                  */
1406                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1407         }
1408
1409         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1410                 /*
1411                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1412                  * We assume here that all the packets sent to the OFFCHANNEL
1413                  * queue are sent in ROC session.
1414                  */
1415                 flush_work(&mvm->roc_done_wk);
1416         } else {
1417                 /*
1418                  * By now, all the AC queues are empty. The AGG queues are
1419                  * empty too. We already got all the Tx responses for all the
1420                  * packets in the queues. The drain work can have been
1421                  * triggered. Flush it.
1422                  */
1423                 flush_work(&mvm->sta_drained_wk);
1424         }
1425 }
1426
1427 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1428                                          struct ieee80211_vif *vif)
1429 {
1430         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1431         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1432
1433         iwl_mvm_prepare_mac_removal(mvm, vif);
1434
1435         mutex_lock(&mvm->mutex);
1436
1437         if (mvm->bf_allowed_vif == mvmvif) {
1438                 mvm->bf_allowed_vif = NULL;
1439                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1440                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1441         }
1442
1443         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1444
1445         /*
1446          * For AP/GO interface, the tear down of the resources allocated to the
1447          * interface is be handled as part of the stop_ap flow.
1448          */
1449         if (vif->type == NL80211_IFTYPE_AP ||
1450             vif->type == NL80211_IFTYPE_ADHOC) {
1451 #ifdef CONFIG_NL80211_TESTMODE
1452                 if (vif == mvm->noa_vif) {
1453                         mvm->noa_vif = NULL;
1454                         mvm->noa_duration = 0;
1455                 }
1456 #endif
1457                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1458                 goto out_release;
1459         }
1460
1461         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1462                 mvm->p2p_device_vif = NULL;
1463                 iwl_mvm_rm_bcast_sta(mvm, vif);
1464                 iwl_mvm_binding_remove_vif(mvm, vif);
1465                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1466                 mvmvif->phy_ctxt = NULL;
1467         }
1468
1469         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1470                 mvm->vif_count--;
1471
1472         iwl_mvm_power_update_mac(mvm);
1473         iwl_mvm_mac_ctxt_remove(mvm, vif);
1474
1475 out_release:
1476         iwl_mvm_mac_ctxt_release(mvm, vif);
1477         mutex_unlock(&mvm->mutex);
1478 }
1479
1480 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1481 {
1482         return 0;
1483 }
1484
1485 struct iwl_mvm_mc_iter_data {
1486         struct iwl_mvm *mvm;
1487         int port_id;
1488 };
1489
1490 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1491                                       struct ieee80211_vif *vif)
1492 {
1493         struct iwl_mvm_mc_iter_data *data = _data;
1494         struct iwl_mvm *mvm = data->mvm;
1495         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1496         int ret, len;
1497
1498         /* if we don't have free ports, mcast frames will be dropped */
1499         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1500                 return;
1501
1502         if (vif->type != NL80211_IFTYPE_STATION ||
1503             !vif->bss_conf.assoc)
1504                 return;
1505
1506         cmd->port_id = data->port_id++;
1507         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1508         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1509
1510         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1511         if (ret)
1512                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1513 }
1514
1515 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1516 {
1517         struct iwl_mvm_mc_iter_data iter_data = {
1518                 .mvm = mvm,
1519         };
1520
1521         lockdep_assert_held(&mvm->mutex);
1522
1523         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1524                 return;
1525
1526         ieee80211_iterate_active_interfaces_atomic(
1527                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1528                 iwl_mvm_mc_iface_iterator, &iter_data);
1529 }
1530
1531 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1532                                      struct netdev_hw_addr_list *mc_list)
1533 {
1534         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1535         struct iwl_mcast_filter_cmd *cmd;
1536         struct netdev_hw_addr *addr;
1537         int addr_count;
1538         bool pass_all;
1539         int len;
1540
1541         addr_count = netdev_hw_addr_list_count(mc_list);
1542         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1543                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1544         if (pass_all)
1545                 addr_count = 0;
1546
1547         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1548         cmd = kzalloc(len, GFP_ATOMIC);
1549         if (!cmd)
1550                 return 0;
1551
1552         if (pass_all) {
1553                 cmd->pass_all = 1;
1554                 return (u64)(unsigned long)cmd;
1555         }
1556
1557         netdev_hw_addr_list_for_each(addr, mc_list) {
1558                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1559                                    cmd->count, addr->addr);
1560                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1561                        addr->addr, ETH_ALEN);
1562                 cmd->count++;
1563         }
1564
1565         return (u64)(unsigned long)cmd;
1566 }
1567
1568 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1569                                      unsigned int changed_flags,
1570                                      unsigned int *total_flags,
1571                                      u64 multicast)
1572 {
1573         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1574         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1575
1576         mutex_lock(&mvm->mutex);
1577
1578         /* replace previous configuration */
1579         kfree(mvm->mcast_filter_cmd);
1580         mvm->mcast_filter_cmd = cmd;
1581
1582         if (!cmd)
1583                 goto out;
1584
1585         iwl_mvm_recalc_multicast(mvm);
1586 out:
1587         mutex_unlock(&mvm->mutex);
1588         *total_flags = 0;
1589 }
1590
1591 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1592                                         struct ieee80211_vif *vif,
1593                                         unsigned int filter_flags,
1594                                         unsigned int changed_flags)
1595 {
1596         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1597
1598         /* We support only filter for probe requests */
1599         if (!(changed_flags & FIF_PROBE_REQ))
1600                 return;
1601
1602         /* Supported only for p2p client interfaces */
1603         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1604             !vif->p2p)
1605                 return;
1606
1607         mutex_lock(&mvm->mutex);
1608         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1609         mutex_unlock(&mvm->mutex);
1610 }
1611
1612 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1613 struct iwl_bcast_iter_data {
1614         struct iwl_mvm *mvm;
1615         struct iwl_bcast_filter_cmd *cmd;
1616         u8 current_filter;
1617 };
1618
1619 static void
1620 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1621                          const struct iwl_fw_bcast_filter *in_filter,
1622                          struct iwl_fw_bcast_filter *out_filter)
1623 {
1624         struct iwl_fw_bcast_filter_attr *attr;
1625         int i;
1626
1627         memcpy(out_filter, in_filter, sizeof(*out_filter));
1628
1629         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1630                 attr = &out_filter->attrs[i];
1631
1632                 if (!attr->mask)
1633                         break;
1634
1635                 switch (attr->reserved1) {
1636                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1637                         if (vif->bss_conf.arp_addr_cnt != 1) {
1638                                 attr->mask = 0;
1639                                 continue;
1640                         }
1641
1642                         attr->val = vif->bss_conf.arp_addr_list[0];
1643                         break;
1644                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1645                         attr->val = *(__be32 *)&vif->addr[2];
1646                         break;
1647                 default:
1648                         break;
1649                 }
1650                 attr->reserved1 = 0;
1651                 out_filter->num_attrs++;
1652         }
1653 }
1654
1655 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1656                                           struct ieee80211_vif *vif)
1657 {
1658         struct iwl_bcast_iter_data *data = _data;
1659         struct iwl_mvm *mvm = data->mvm;
1660         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1661         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1662         struct iwl_fw_bcast_mac *bcast_mac;
1663         int i;
1664
1665         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1666                 return;
1667
1668         bcast_mac = &cmd->macs[mvmvif->id];
1669
1670         /*
1671          * enable filtering only for associated stations, but not for P2P
1672          * Clients
1673          */
1674         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1675             !vif->bss_conf.assoc)
1676                 return;
1677
1678         bcast_mac->default_discard = 1;
1679
1680         /* copy all configured filters */
1681         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1682                 /*
1683                  * Make sure we don't exceed our filters limit.
1684                  * if there is still a valid filter to be configured,
1685                  * be on the safe side and just allow bcast for this mac.
1686                  */
1687                 if (WARN_ON_ONCE(data->current_filter >=
1688                                  ARRAY_SIZE(cmd->filters))) {
1689                         bcast_mac->default_discard = 0;
1690                         bcast_mac->attached_filters = 0;
1691                         break;
1692                 }
1693
1694                 iwl_mvm_set_bcast_filter(vif,
1695                                          &mvm->bcast_filters[i],
1696                                          &cmd->filters[data->current_filter]);
1697
1698                 /* skip current filter if it contains no attributes */
1699                 if (!cmd->filters[data->current_filter].num_attrs)
1700                         continue;
1701
1702                 /* attach the filter to current mac */
1703                 bcast_mac->attached_filters |=
1704                                 cpu_to_le16(BIT(data->current_filter));
1705
1706                 data->current_filter++;
1707         }
1708 }
1709
1710 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1711                                     struct iwl_bcast_filter_cmd *cmd)
1712 {
1713         struct iwl_bcast_iter_data iter_data = {
1714                 .mvm = mvm,
1715                 .cmd = cmd,
1716         };
1717
1718         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1719                 return false;
1720
1721         memset(cmd, 0, sizeof(*cmd));
1722         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1723         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1724
1725 #ifdef CONFIG_IWLWIFI_DEBUGFS
1726         /* use debugfs filters/macs if override is configured */
1727         if (mvm->dbgfs_bcast_filtering.override) {
1728                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1729                        sizeof(cmd->filters));
1730                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1731                        sizeof(cmd->macs));
1732                 return true;
1733         }
1734 #endif
1735
1736         /* if no filters are configured, do nothing */
1737         if (!mvm->bcast_filters)
1738                 return false;
1739
1740         /* configure and attach these filters for each associated sta vif */
1741         ieee80211_iterate_active_interfaces(
1742                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1743                 iwl_mvm_bcast_filter_iterator, &iter_data);
1744
1745         return true;
1746 }
1747
1748 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1749 {
1750         struct iwl_bcast_filter_cmd cmd;
1751
1752         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1753                 return 0;
1754
1755         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1756                 return 0;
1757
1758         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1759                                     sizeof(cmd), &cmd);
1760 }
1761 #else
1762 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1763 {
1764         return 0;
1765 }
1766 #endif
1767
1768 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1769                                     struct ieee80211_vif *vif)
1770 {
1771         struct iwl_mu_group_mgmt_cmd cmd = {};
1772
1773         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1774                WLAN_MEMBERSHIP_LEN);
1775         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1776                WLAN_USER_POSITION_LEN);
1777
1778         return iwl_mvm_send_cmd_pdu(mvm,
1779                                     WIDE_ID(DATA_PATH_GROUP,
1780                                             UPDATE_MU_GROUPS_CMD),
1781                                     0, sizeof(cmd), &cmd);
1782 }
1783
1784 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1785                                            struct ieee80211_vif *vif)
1786 {
1787         if (vif->mu_mimo_owner) {
1788                 struct iwl_mu_group_mgmt_notif *notif = _data;
1789
1790                 /*
1791                  * MU-MIMO Group Id action frame is little endian. We treat
1792                  * the data received from firmware as if it came from the
1793                  * action frame, so no conversion is needed.
1794                  */
1795                 ieee80211_update_mu_groups(vif,
1796                                            (u8 *)&notif->membership_status,
1797                                            (u8 *)&notif->user_position);
1798         }
1799 }
1800
1801 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1802                                struct iwl_rx_cmd_buffer *rxb)
1803 {
1804         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1805         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1806
1807         ieee80211_iterate_active_interfaces_atomic(
1808                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1809                         iwl_mvm_mu_mimo_iface_iterator, notif);
1810 }
1811
1812 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1813                                              struct ieee80211_vif *vif,
1814                                              struct ieee80211_bss_conf *bss_conf,
1815                                              u32 changes)
1816 {
1817         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1818         int ret;
1819
1820         /*
1821          * Re-calculate the tsf id, as the master-slave relations depend on the
1822          * beacon interval, which was not known when the station interface was
1823          * added.
1824          */
1825         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1826                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1827
1828         /*
1829          * If we're not associated yet, take the (new) BSSID before associating
1830          * so the firmware knows. If we're already associated, then use the old
1831          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1832          * branch for disassociation below.
1833          */
1834         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1835                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1836
1837         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1838         if (ret)
1839                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1840
1841         /* after sending it once, adopt mac80211 data */
1842         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1843         mvmvif->associated = bss_conf->assoc;
1844
1845         if (changes & BSS_CHANGED_ASSOC) {
1846                 if (bss_conf->assoc) {
1847                         /* clear statistics to get clean beacon counter */
1848                         iwl_mvm_request_statistics(mvm, true);
1849                         memset(&mvmvif->beacon_stats, 0,
1850                                sizeof(mvmvif->beacon_stats));
1851
1852                         /* add quota for this interface */
1853                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1854                         if (ret) {
1855                                 IWL_ERR(mvm, "failed to update quotas\n");
1856                                 return;
1857                         }
1858
1859                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1860                                      &mvm->status)) {
1861                                 /*
1862                                  * If we're restarting then the firmware will
1863                                  * obviously have lost synchronisation with
1864                                  * the AP. It will attempt to synchronise by
1865                                  * itself, but we can make it more reliable by
1866                                  * scheduling a session protection time event.
1867                                  *
1868                                  * The firmware needs to receive a beacon to
1869                                  * catch up with synchronisation, use 110% of
1870                                  * the beacon interval.
1871                                  *
1872                                  * Set a large maximum delay to allow for more
1873                                  * than a single interface.
1874                                  */
1875                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1876                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1877                                                         5 * dur, false);
1878                         }
1879
1880                         iwl_mvm_sf_update(mvm, vif, false);
1881                         iwl_mvm_power_vif_assoc(mvm, vif);
1882                         if (vif->p2p) {
1883                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1884                                 iwl_mvm_update_smps(mvm, vif,
1885                                                     IWL_MVM_SMPS_REQ_PROT,
1886                                                     IEEE80211_SMPS_DYNAMIC);
1887                         }
1888                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1889                         /*
1890                          * If update fails - SF might be running in associated
1891                          * mode while disassociated - which is forbidden.
1892                          */
1893                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1894                                   "Failed to update SF upon disassociation\n");
1895
1896                         /* remove AP station now that the MAC is unassoc */
1897                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1898                         if (ret)
1899                                 IWL_ERR(mvm, "failed to remove AP station\n");
1900
1901                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1902                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1903                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1904                         /* remove quota for this interface */
1905                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1906                         if (ret)
1907                                 IWL_ERR(mvm, "failed to update quotas\n");
1908
1909                         if (vif->p2p)
1910                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1911
1912                         /* this will take the cleared BSSID from bss_conf */
1913                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1914                         if (ret)
1915                                 IWL_ERR(mvm,
1916                                         "failed to update MAC %pM (clear after unassoc)\n",
1917                                         vif->addr);
1918                 }
1919
1920                 /*
1921                  * The firmware tracks the MU-MIMO group on its own.
1922                  * However, on HW restart we should restore this data.
1923                  */
1924                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1925                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1926                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1927                         if (ret)
1928                                 IWL_ERR(mvm,
1929                                         "failed to update VHT MU_MIMO groups\n");
1930                 }
1931
1932                 iwl_mvm_recalc_multicast(mvm);
1933                 iwl_mvm_configure_bcast_filter(mvm);
1934
1935                 /* reset rssi values */
1936                 mvmvif->bf_data.ave_beacon_signal = 0;
1937
1938                 iwl_mvm_bt_coex_vif_change(mvm);
1939                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1940                                     IEEE80211_SMPS_AUTOMATIC);
1941                 if (fw_has_capa(&mvm->fw->ucode_capa,
1942                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1943                         iwl_mvm_config_scan(mvm);
1944         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1945                 /*
1946                  * We received a beacon _after_ association so
1947                  * remove the session protection.
1948                  */
1949                 iwl_mvm_remove_time_event(mvm, mvmvif,
1950                                           &mvmvif->time_event_data);
1951         }
1952
1953         if (changes & BSS_CHANGED_BEACON_INFO) {
1954                 iwl_mvm_sf_update(mvm, vif, false);
1955                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1956         }
1957
1958         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1959                 ret = iwl_mvm_power_update_mac(mvm);
1960                 if (ret)
1961                         IWL_ERR(mvm, "failed to update power mode\n");
1962         }
1963
1964         if (changes & BSS_CHANGED_TXPOWER) {
1965                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1966                                 bss_conf->txpower);
1967                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1968         }
1969
1970         if (changes & BSS_CHANGED_CQM) {
1971                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1972                 /* reset cqm events tracking */
1973                 mvmvif->bf_data.last_cqm_event = 0;
1974                 if (mvmvif->bf_data.bf_enabled) {
1975                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1976                         if (ret)
1977                                 IWL_ERR(mvm,
1978                                         "failed to update CQM thresholds\n");
1979                 }
1980         }
1981
1982         if (changes & BSS_CHANGED_ARP_FILTER) {
1983                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1984                 iwl_mvm_configure_bcast_filter(mvm);
1985         }
1986 }
1987
1988 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1989                                  struct ieee80211_vif *vif)
1990 {
1991         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1992         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1993         int ret;
1994
1995         /*
1996          * iwl_mvm_mac_ctxt_add() might read directly from the device
1997          * (the system time), so make sure it is available.
1998          */
1999         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2000         if (ret)
2001                 return ret;
2002
2003         mutex_lock(&mvm->mutex);
2004
2005         /* Send the beacon template */
2006         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2007         if (ret)
2008                 goto out_unlock;
2009
2010         /*
2011          * Re-calculate the tsf id, as the master-slave relations depend on the
2012          * beacon interval, which was not known when the AP interface was added.
2013          */
2014         if (vif->type == NL80211_IFTYPE_AP)
2015                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2016
2017         mvmvif->ap_assoc_sta_count = 0;
2018
2019         /* Add the mac context */
2020         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2021         if (ret)
2022                 goto out_unlock;
2023
2024         /* Perform the binding */
2025         ret = iwl_mvm_binding_add_vif(mvm, vif);
2026         if (ret)
2027                 goto out_remove;
2028
2029         /* Send the bcast station. At this stage the TBTT and DTIM time events
2030          * are added and applied to the scheduler */
2031         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2032         if (ret)
2033                 goto out_unbind;
2034
2035         /* must be set before quota calculations */
2036         mvmvif->ap_ibss_active = true;
2037
2038         /* power updated needs to be done before quotas */
2039         iwl_mvm_power_update_mac(mvm);
2040
2041         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2042         if (ret)
2043                 goto out_quota_failed;
2044
2045         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2046         if (vif->p2p && mvm->p2p_device_vif)
2047                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2048
2049         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2050
2051         iwl_mvm_bt_coex_vif_change(mvm);
2052
2053         /* we don't support TDLS during DCM */
2054         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2055                 iwl_mvm_teardown_tdls_peers(mvm);
2056
2057         goto out_unlock;
2058
2059 out_quota_failed:
2060         iwl_mvm_power_update_mac(mvm);
2061         mvmvif->ap_ibss_active = false;
2062         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2063 out_unbind:
2064         iwl_mvm_binding_remove_vif(mvm, vif);
2065 out_remove:
2066         iwl_mvm_mac_ctxt_remove(mvm, vif);
2067 out_unlock:
2068         mutex_unlock(&mvm->mutex);
2069         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2070         return ret;
2071 }
2072
2073 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2074                                  struct ieee80211_vif *vif)
2075 {
2076         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2077         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2078
2079         iwl_mvm_prepare_mac_removal(mvm, vif);
2080
2081         mutex_lock(&mvm->mutex);
2082
2083         /* Handle AP stop while in CSA */
2084         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2085                 iwl_mvm_remove_time_event(mvm, mvmvif,
2086                                           &mvmvif->time_event_data);
2087                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2088                 mvmvif->csa_countdown = false;
2089         }
2090
2091         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2092                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2093                 mvm->csa_tx_block_bcn_timeout = 0;
2094         }
2095
2096         mvmvif->ap_ibss_active = false;
2097         mvm->ap_last_beacon_gp2 = 0;
2098
2099         iwl_mvm_bt_coex_vif_change(mvm);
2100
2101         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2102
2103         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2104         if (vif->p2p && mvm->p2p_device_vif)
2105                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2106
2107         iwl_mvm_update_quotas(mvm, false, NULL);
2108         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2109         iwl_mvm_binding_remove_vif(mvm, vif);
2110
2111         iwl_mvm_power_update_mac(mvm);
2112
2113         iwl_mvm_mac_ctxt_remove(mvm, vif);
2114
2115         mutex_unlock(&mvm->mutex);
2116 }
2117
2118 static void
2119 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2120                                  struct ieee80211_vif *vif,
2121                                  struct ieee80211_bss_conf *bss_conf,
2122                                  u32 changes)
2123 {
2124         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2125
2126         /* Changes will be applied when the AP/IBSS is started */
2127         if (!mvmvif->ap_ibss_active)
2128                 return;
2129
2130         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2131                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2132             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2133                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2134
2135         /* Need to send a new beacon template to the FW */
2136         if (changes & BSS_CHANGED_BEACON &&
2137             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2138                 IWL_WARN(mvm, "Failed updating beacon data\n");
2139
2140         if (changes & BSS_CHANGED_TXPOWER) {
2141                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2142                                 bss_conf->txpower);
2143                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2144         }
2145 }
2146
2147 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2148                                      struct ieee80211_vif *vif,
2149                                      struct ieee80211_bss_conf *bss_conf,
2150                                      u32 changes)
2151 {
2152         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2153
2154         /*
2155          * iwl_mvm_bss_info_changed_station() might call
2156          * iwl_mvm_protect_session(), which reads directly from
2157          * the device (the system time), so make sure it is available.
2158          */
2159         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2160                 return;
2161
2162         mutex_lock(&mvm->mutex);
2163
2164         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2165                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2166
2167         switch (vif->type) {
2168         case NL80211_IFTYPE_STATION:
2169                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2170                 break;
2171         case NL80211_IFTYPE_AP:
2172         case NL80211_IFTYPE_ADHOC:
2173                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2174                 break;
2175         default:
2176                 /* shouldn't happen */
2177                 WARN_ON_ONCE(1);
2178         }
2179
2180         mutex_unlock(&mvm->mutex);
2181         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2182 }
2183
2184 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2185                                struct ieee80211_vif *vif,
2186                                struct ieee80211_scan_request *hw_req)
2187 {
2188         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2189         int ret;
2190
2191         if (hw_req->req.n_channels == 0 ||
2192             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2193                 return -EINVAL;
2194
2195         mutex_lock(&mvm->mutex);
2196         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2197         mutex_unlock(&mvm->mutex);
2198
2199         return ret;
2200 }
2201
2202 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2203                                        struct ieee80211_vif *vif)
2204 {
2205         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2206
2207         mutex_lock(&mvm->mutex);
2208
2209         /* Due to a race condition, it's possible that mac80211 asks
2210          * us to stop a hw_scan when it's already stopped.  This can
2211          * happen, for instance, if we stopped the scan ourselves,
2212          * called ieee80211_scan_completed() and the userspace called
2213          * cancel scan scan before ieee80211_scan_work() could run.
2214          * To handle that, simply return if the scan is not running.
2215         */
2216         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2217                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2218
2219         mutex_unlock(&mvm->mutex);
2220 }
2221
2222 static void
2223 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2224                                   struct ieee80211_sta *sta, u16 tids,
2225                                   int num_frames,
2226                                   enum ieee80211_frame_release_type reason,
2227                                   bool more_data)
2228 {
2229         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2230
2231         /* Called when we need to transmit (a) frame(s) from mac80211 */
2232
2233         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2234                                           tids, more_data, false);
2235 }
2236
2237 static void
2238 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2239                                     struct ieee80211_sta *sta, u16 tids,
2240                                     int num_frames,
2241                                     enum ieee80211_frame_release_type reason,
2242                                     bool more_data)
2243 {
2244         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2245
2246         /* Called when we need to transmit (a) frame(s) from agg queue */
2247
2248         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2249                                           tids, more_data, true);
2250 }
2251
2252 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2253                                    struct ieee80211_vif *vif,
2254                                    enum sta_notify_cmd cmd,
2255                                    struct ieee80211_sta *sta)
2256 {
2257         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2258         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2259         unsigned long txqs = 0, tids = 0;
2260         int tid;
2261
2262         spin_lock_bh(&mvmsta->lock);
2263         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2264                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2265
2266                 if (tid_data->state != IWL_AGG_ON &&
2267                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2268                         continue;
2269
2270                 __set_bit(tid_data->txq_id, &txqs);
2271
2272                 if (iwl_mvm_tid_queued(tid_data) == 0)
2273                         continue;
2274
2275                 __set_bit(tid, &tids);
2276         }
2277
2278         switch (cmd) {
2279         case STA_NOTIFY_SLEEP:
2280                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2281                         ieee80211_sta_block_awake(hw, sta, true);
2282
2283                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2284                         ieee80211_sta_set_buffered(sta, tid, true);
2285
2286                 if (txqs)
2287                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2288                 /*
2289                  * The fw updates the STA to be asleep. Tx packets on the Tx
2290                  * queues to this station will not be transmitted. The fw will
2291                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2292                  */
2293                 break;
2294         case STA_NOTIFY_AWAKE:
2295                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2296                         break;
2297
2298                 if (txqs)
2299                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2300                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2301                 break;
2302         default:
2303                 break;
2304         }
2305         spin_unlock_bh(&mvmsta->lock);
2306 }
2307
2308 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2309                                        struct ieee80211_vif *vif,
2310                                        struct ieee80211_sta *sta)
2311 {
2312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2313         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2314
2315         /*
2316          * This is called before mac80211 does RCU synchronisation,
2317          * so here we already invalidate our internal RCU-protected
2318          * station pointer. The rest of the code will thus no longer
2319          * be able to find the station this way, and we don't rely
2320          * on further RCU synchronisation after the sta_state()
2321          * callback deleted the station.
2322          */
2323         mutex_lock(&mvm->mutex);
2324         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2325                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2326                                    ERR_PTR(-ENOENT));
2327
2328         mutex_unlock(&mvm->mutex);
2329 }
2330
2331 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2332                                 const u8 *bssid)
2333 {
2334         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2335                 return;
2336
2337         if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2338                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2339                 return;
2340         }
2341
2342         if (iwlwifi_mod_params.uapsd_disable) {
2343                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2344                 return;
2345         }
2346
2347         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2348 }
2349
2350 static void
2351 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2352                            struct ieee80211_vif *vif, u8 *peer_addr,
2353                            enum nl80211_tdls_operation action)
2354 {
2355         struct iwl_fw_dbg_trigger_tlv *trig;
2356         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2357
2358         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2359                 return;
2360
2361         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2362         tdls_trig = (void *)trig->data;
2363         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2364                 return;
2365
2366         if (!(tdls_trig->action_bitmap & BIT(action)))
2367                 return;
2368
2369         if (tdls_trig->peer_mode &&
2370             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2371                 return;
2372
2373         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2374                                     "TDLS event occurred, peer %pM, action %d",
2375                                     peer_addr, action);
2376 }
2377
2378 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2379                                  struct ieee80211_vif *vif,
2380                                  struct ieee80211_sta *sta,
2381                                  enum ieee80211_sta_state old_state,
2382                                  enum ieee80211_sta_state new_state)
2383 {
2384         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2385         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2386         int ret;
2387
2388         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2389                            sta->addr, old_state, new_state);
2390
2391         /* this would be a mac80211 bug ... but don't crash */
2392         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2393                 return -EINVAL;
2394
2395         /* if a STA is being removed, reuse its ID */
2396         flush_work(&mvm->sta_drained_wk);
2397
2398         mutex_lock(&mvm->mutex);
2399         if (old_state == IEEE80211_STA_NOTEXIST &&
2400             new_state == IEEE80211_STA_NONE) {
2401                 /*
2402                  * Firmware bug - it'll crash if the beacon interval is less
2403                  * than 16. We can't avoid connecting at all, so refuse the
2404                  * station state change, this will cause mac80211 to abandon
2405                  * attempts to connect to this AP, and eventually wpa_s will
2406                  * blacklist the AP...
2407                  */
2408                 if (vif->type == NL80211_IFTYPE_STATION &&
2409                     vif->bss_conf.beacon_int < 16) {
2410                         IWL_ERR(mvm,
2411                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2412                                 sta->addr, vif->bss_conf.beacon_int);
2413                         ret = -EINVAL;
2414                         goto out_unlock;
2415                 }
2416
2417                 if (sta->tdls &&
2418                     (vif->p2p ||
2419                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2420                                                 IWL_MVM_TDLS_STA_COUNT ||
2421                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2422                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2423                         ret = -EBUSY;
2424                         goto out_unlock;
2425                 }
2426
2427                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2428                 if (sta->tdls && ret == 0) {
2429                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2430                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2431                                                    NL80211_TDLS_SETUP);
2432                 }
2433         } else if (old_state == IEEE80211_STA_NONE &&
2434                    new_state == IEEE80211_STA_AUTH) {
2435                 /*
2436                  * EBS may be disabled due to previous failures reported by FW.
2437                  * Reset EBS status here assuming environment has been changed.
2438                  */
2439                 mvm->last_ebs_successful = true;
2440                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2441                 ret = 0;
2442         } else if (old_state == IEEE80211_STA_AUTH &&
2443                    new_state == IEEE80211_STA_ASSOC) {
2444                 if (vif->type == NL80211_IFTYPE_AP) {
2445                         mvmvif->ap_assoc_sta_count++;
2446                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2447                 }
2448                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2449                 if (ret == 0)
2450                         iwl_mvm_rs_rate_init(mvm, sta,
2451                                              mvmvif->phy_ctxt->channel->band,
2452                                              true);
2453         } else if (old_state == IEEE80211_STA_ASSOC &&
2454                    new_state == IEEE80211_STA_AUTHORIZED) {
2455
2456                 /* we don't support TDLS during DCM */
2457                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2458                         iwl_mvm_teardown_tdls_peers(mvm);
2459
2460                 if (sta->tdls)
2461                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2462                                                    NL80211_TDLS_ENABLE_LINK);
2463
2464                 /* enable beacon filtering */
2465                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2466                 ret = 0;
2467         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2468                    new_state == IEEE80211_STA_ASSOC) {
2469                 /* disable beacon filtering */
2470                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2471                 ret = 0;
2472         } else if (old_state == IEEE80211_STA_ASSOC &&
2473                    new_state == IEEE80211_STA_AUTH) {
2474                 if (vif->type == NL80211_IFTYPE_AP) {
2475                         mvmvif->ap_assoc_sta_count--;
2476                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2477                 }
2478                 ret = 0;
2479         } else if (old_state == IEEE80211_STA_AUTH &&
2480                    new_state == IEEE80211_STA_NONE) {
2481                 ret = 0;
2482         } else if (old_state == IEEE80211_STA_NONE &&
2483                    new_state == IEEE80211_STA_NOTEXIST) {
2484                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2485                 if (sta->tdls) {
2486                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2487                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2488                                                    NL80211_TDLS_DISABLE_LINK);
2489                 }
2490         } else {
2491                 ret = -EIO;
2492         }
2493  out_unlock:
2494         mutex_unlock(&mvm->mutex);
2495
2496         if (sta->tdls && ret == 0) {
2497                 if (old_state == IEEE80211_STA_NOTEXIST &&
2498                     new_state == IEEE80211_STA_NONE)
2499                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2500                 else if (old_state == IEEE80211_STA_NONE &&
2501                          new_state == IEEE80211_STA_NOTEXIST)
2502                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2503         }
2504
2505         return ret;
2506 }
2507
2508 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2509 {
2510         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2511
2512         mvm->rts_threshold = value;
2513
2514         return 0;
2515 }
2516
2517 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2518                                   struct ieee80211_vif *vif,
2519                                   struct ieee80211_sta *sta, u32 changed)
2520 {
2521         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2522
2523         if (vif->type == NL80211_IFTYPE_STATION &&
2524             changed & IEEE80211_RC_NSS_CHANGED)
2525                 iwl_mvm_sf_update(mvm, vif, false);
2526 }
2527
2528 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2529                                struct ieee80211_vif *vif, u16 ac,
2530                                const struct ieee80211_tx_queue_params *params)
2531 {
2532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2533         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2534
2535         mvmvif->queue_params[ac] = *params;
2536
2537         /*
2538          * No need to update right away, we'll get BSS_CHANGED_QOS
2539          * The exception is P2P_DEVICE interface which needs immediate update.
2540          */
2541         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2542                 int ret;
2543
2544                 mutex_lock(&mvm->mutex);
2545                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2546                 mutex_unlock(&mvm->mutex);
2547                 return ret;
2548         }
2549         return 0;
2550 }
2551
2552 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2553                                       struct ieee80211_vif *vif)
2554 {
2555         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2556         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2557                            200 + vif->bss_conf.beacon_int);
2558         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2559                                100 + vif->bss_conf.beacon_int);
2560
2561         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2562                 return;
2563
2564         /*
2565          * iwl_mvm_protect_session() reads directly from the device
2566          * (the system time), so make sure it is available.
2567          */
2568         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2569                 return;
2570
2571         mutex_lock(&mvm->mutex);
2572         /* Try really hard to protect the session and hear a beacon */
2573         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2574         mutex_unlock(&mvm->mutex);
2575
2576         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2577 }
2578
2579 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2580                                         struct ieee80211_vif *vif,
2581                                         struct cfg80211_sched_scan_request *req,
2582                                         struct ieee80211_scan_ies *ies)
2583 {
2584         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2585
2586         int ret;
2587
2588         mutex_lock(&mvm->mutex);
2589
2590         if (!vif->bss_conf.idle) {
2591                 ret = -EBUSY;
2592                 goto out;
2593         }
2594
2595         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2596
2597 out:
2598         mutex_unlock(&mvm->mutex);
2599         return ret;
2600 }
2601
2602 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2603                                        struct ieee80211_vif *vif)
2604 {
2605         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2606         int ret;
2607
2608         mutex_lock(&mvm->mutex);
2609
2610         /* Due to a race condition, it's possible that mac80211 asks
2611          * us to stop a sched_scan when it's already stopped.  This
2612          * can happen, for instance, if we stopped the scan ourselves,
2613          * called ieee80211_sched_scan_stopped() and the userspace called
2614          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2615          * could run.  To handle this, simply return if the scan is
2616          * not running.
2617         */
2618         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2619                 mutex_unlock(&mvm->mutex);
2620                 return 0;
2621         }
2622
2623         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2624         mutex_unlock(&mvm->mutex);
2625         iwl_mvm_wait_for_async_handlers(mvm);
2626
2627         return ret;
2628 }
2629
2630 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2631                                enum set_key_cmd cmd,
2632                                struct ieee80211_vif *vif,
2633                                struct ieee80211_sta *sta,
2634                                struct ieee80211_key_conf *key)
2635 {
2636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2637         struct iwl_mvm_sta *mvmsta;
2638         struct iwl_mvm_key_pn *ptk_pn;
2639         int keyidx = key->keyidx;
2640         int ret;
2641         u8 key_offset;
2642
2643         if (iwlwifi_mod_params.sw_crypto) {
2644                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2645                 return -EOPNOTSUPP;
2646         }
2647
2648         switch (key->cipher) {
2649         case WLAN_CIPHER_SUITE_TKIP:
2650                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2651                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2652                 break;
2653         case WLAN_CIPHER_SUITE_CCMP:
2654                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2655                 break;
2656         case WLAN_CIPHER_SUITE_AES_CMAC:
2657                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2658                 break;
2659         case WLAN_CIPHER_SUITE_WEP40:
2660         case WLAN_CIPHER_SUITE_WEP104:
2661                 /* For non-client mode, only use WEP keys for TX as we probably
2662                  * don't have a station yet anyway and would then have to keep
2663                  * track of the keys, linking them to each of the clients/peers
2664                  * as they appear. For now, don't do that, for performance WEP
2665                  * offload doesn't really matter much, but we need it for some
2666                  * other offload features in client mode.
2667                  */
2668                 if (vif->type != NL80211_IFTYPE_STATION)
2669                         return 0;
2670                 break;
2671         default:
2672                 /* currently FW supports only one optional cipher scheme */
2673                 if (hw->n_cipher_schemes &&
2674                     hw->cipher_schemes->cipher == key->cipher)
2675                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2676                 else
2677                         return -EOPNOTSUPP;
2678         }
2679
2680         mutex_lock(&mvm->mutex);
2681
2682         switch (cmd) {
2683         case SET_KEY:
2684                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2685                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2686                         /*
2687                          * GTK on AP interface is a TX-only key, return 0;
2688                          * on IBSS they're per-station and because we're lazy
2689                          * we don't support them for RX, so do the same.
2690                          */
2691                         ret = 0;
2692                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2693                         break;
2694                 }
2695
2696                 /* During FW restart, in order to restore the state as it was,
2697                  * don't try to reprogram keys we previously failed for.
2698                  */
2699                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2700                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2701                         IWL_DEBUG_MAC80211(mvm,
2702                                            "skip invalid idx key programming during restart\n");
2703                         ret = 0;
2704                         break;
2705                 }
2706
2707                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2708                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2709                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2710                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2711                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2712                         struct ieee80211_key_seq seq;
2713                         int tid, q;
2714
2715                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2716                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2717                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2718                                          mvm->trans->num_rx_queues *
2719                                                 sizeof(ptk_pn->q[0]),
2720                                          GFP_KERNEL);
2721                         if (!ptk_pn) {
2722                                 ret = -ENOMEM;
2723                                 break;
2724                         }
2725
2726                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2727                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2728                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2729                                         memcpy(ptk_pn->q[q].pn[tid],
2730                                                seq.ccmp.pn,
2731                                                IEEE80211_CCMP_PN_LEN);
2732                         }
2733
2734                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2735                 }
2736
2737                 /* in HW restart reuse the index, otherwise request a new one */
2738                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2739                         key_offset = key->hw_key_idx;
2740                 else
2741                         key_offset = STA_KEY_IDX_INVALID;
2742
2743                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2744                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2745                 if (ret) {
2746                         IWL_WARN(mvm, "set key failed\n");
2747                         /*
2748                          * can't add key for RX, but we don't need it
2749                          * in the device for TX so still return 0
2750                          */
2751                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2752                         ret = 0;
2753                 }
2754
2755                 break;
2756         case DISABLE_KEY:
2757                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2758                         ret = 0;
2759                         break;
2760                 }
2761
2762                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2763                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2764                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2765                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2766                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2767                         ptk_pn = rcu_dereference_protected(
2768                                                 mvmsta->ptk_pn[keyidx],
2769                                                 lockdep_is_held(&mvm->mutex));
2770                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2771                         if (ptk_pn)
2772                                 kfree_rcu(ptk_pn, rcu_head);
2773                 }
2774
2775                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2776                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2777                 break;
2778         default:
2779                 ret = -EINVAL;
2780         }
2781
2782         mutex_unlock(&mvm->mutex);
2783         return ret;
2784 }
2785
2786 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2787                                         struct ieee80211_vif *vif,
2788                                         struct ieee80211_key_conf *keyconf,
2789                                         struct ieee80211_sta *sta,
2790                                         u32 iv32, u16 *phase1key)
2791 {
2792         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2793
2794         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2795                 return;
2796
2797         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2798 }
2799
2800
2801 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2802                                struct iwl_rx_packet *pkt, void *data)
2803 {
2804         struct iwl_mvm *mvm =
2805                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2806         struct iwl_hs20_roc_res *resp;
2807         int resp_len = iwl_rx_packet_payload_len(pkt);
2808         struct iwl_mvm_time_event_data *te_data = data;
2809
2810         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2811                 return true;
2812
2813         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2814                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2815                 return true;
2816         }
2817
2818         resp = (void *)pkt->data;
2819
2820         IWL_DEBUG_TE(mvm,
2821                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2822                      resp->status, resp->event_unique_id);
2823
2824         te_data->uid = le32_to_cpu(resp->event_unique_id);
2825         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2826                      te_data->uid);
2827
2828         spin_lock_bh(&mvm->time_event_lock);
2829         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2830         spin_unlock_bh(&mvm->time_event_lock);
2831
2832         return true;
2833 }
2834
2835 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2836 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2837 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2838 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2839 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2840 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2841                                     struct ieee80211_channel *channel,
2842                                     struct ieee80211_vif *vif,
2843                                     int duration)
2844 {
2845         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2846         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2847         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2848         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2849         struct iwl_notification_wait wait_time_event;
2850         u32 dtim_interval = vif->bss_conf.dtim_period *
2851                 vif->bss_conf.beacon_int;
2852         u32 req_dur, delay;
2853         struct iwl_hs20_roc_req aux_roc_req = {
2854                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2855                 .id_and_color =
2856                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2857                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2858                 /* Set the channel info data */
2859                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2860                         PHY_BAND_24 : PHY_BAND_5,
2861                 .channel_info.channel = channel->hw_value,
2862                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2863                 /* Set the time and duration */
2864                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2865          };
2866
2867         delay = AUX_ROC_MIN_DELAY;
2868         req_dur = MSEC_TO_TU(duration);
2869
2870         /*
2871          * If we are associated we want the delay time to be at least one
2872          * dtim interval so that the FW can wait until after the DTIM and
2873          * then start the time event, this will potentially allow us to
2874          * remain off-channel for the max duration.
2875          * Since we want to use almost a whole dtim interval we would also
2876          * like the delay to be for 2-3 dtim intervals, in case there are
2877          * other time events with higher priority.
2878          */
2879         if (vif->bss_conf.assoc) {
2880                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2881                 /* We cannot remain off-channel longer than the DTIM interval */
2882                 if (dtim_interval <= req_dur) {
2883                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2884                         if (req_dur <= AUX_ROC_MIN_DURATION)
2885                                 req_dur = dtim_interval -
2886                                         AUX_ROC_MIN_SAFETY_BUFFER;
2887                 }
2888         }
2889
2890         aux_roc_req.duration = cpu_to_le32(req_dur);
2891         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2892
2893         IWL_DEBUG_TE(mvm,
2894                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2895                      channel->hw_value, req_dur, duration, delay,
2896                      dtim_interval);
2897         /* Set the node address */
2898         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2899
2900         lockdep_assert_held(&mvm->mutex);
2901
2902         spin_lock_bh(&mvm->time_event_lock);
2903
2904         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2905                 spin_unlock_bh(&mvm->time_event_lock);
2906                 return -EIO;
2907         }
2908
2909         te_data->vif = vif;
2910         te_data->duration = duration;
2911         te_data->id = HOT_SPOT_CMD;
2912
2913         spin_unlock_bh(&mvm->time_event_lock);
2914
2915         /*
2916          * Use a notification wait, which really just processes the
2917          * command response and doesn't wait for anything, in order
2918          * to be able to process the response and get the UID inside
2919          * the RX path. Using CMD_WANT_SKB doesn't work because it
2920          * stores the buffer and then wakes up this thread, by which
2921          * time another notification (that the time event started)
2922          * might already be processed unsuccessfully.
2923          */
2924         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2925                                    time_event_response,
2926                                    ARRAY_SIZE(time_event_response),
2927                                    iwl_mvm_rx_aux_roc, te_data);
2928
2929         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2930                                    &aux_roc_req);
2931
2932         if (res) {
2933                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2934                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2935                 goto out_clear_te;
2936         }
2937
2938         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2939         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2940         /* should never fail */
2941         WARN_ON_ONCE(res);
2942
2943         if (res) {
2944  out_clear_te:
2945                 spin_lock_bh(&mvm->time_event_lock);
2946                 iwl_mvm_te_clear_data(mvm, te_data);
2947                 spin_unlock_bh(&mvm->time_event_lock);
2948         }
2949
2950         return res;
2951 }
2952
2953 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2954                        struct ieee80211_vif *vif,
2955                        struct ieee80211_channel *channel,
2956                        int duration,
2957                        enum ieee80211_roc_type type)
2958 {
2959         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2960         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2961         struct cfg80211_chan_def chandef;
2962         struct iwl_mvm_phy_ctxt *phy_ctxt;
2963         int ret, i;
2964
2965         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2966                            duration, type);
2967
2968         flush_work(&mvm->roc_done_wk);
2969
2970         mutex_lock(&mvm->mutex);
2971
2972         switch (vif->type) {
2973         case NL80211_IFTYPE_STATION:
2974                 if (fw_has_capa(&mvm->fw->ucode_capa,
2975                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2976                         /* Use aux roc framework (HS20) */
2977                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2978                                                        vif, duration);
2979                         goto out_unlock;
2980                 }
2981                 IWL_ERR(mvm, "hotspot not supported\n");
2982                 ret = -EINVAL;
2983                 goto out_unlock;
2984         case NL80211_IFTYPE_P2P_DEVICE:
2985                 /* handle below */
2986                 break;
2987         default:
2988                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2989                 ret = -EINVAL;
2990                 goto out_unlock;
2991         }
2992
2993         for (i = 0; i < NUM_PHY_CTX; i++) {
2994                 phy_ctxt = &mvm->phy_ctxts[i];
2995                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2996                         continue;
2997
2998                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2999                         /*
3000                          * Unbind the P2P_DEVICE from the current PHY context,
3001                          * and if the PHY context is not used remove it.
3002                          */
3003                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3004                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3005                                 goto out_unlock;
3006
3007                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3008
3009                         /* Bind the P2P_DEVICE to the current PHY Context */
3010                         mvmvif->phy_ctxt = phy_ctxt;
3011
3012                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3013                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3014                                 goto out_unlock;
3015
3016                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3017                         goto schedule_time_event;
3018                 }
3019         }
3020
3021         /* Need to update the PHY context only if the ROC channel changed */
3022         if (channel == mvmvif->phy_ctxt->channel)
3023                 goto schedule_time_event;
3024
3025         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3026
3027         /*
3028          * Change the PHY context configuration as it is currently referenced
3029          * only by the P2P Device MAC
3030          */
3031         if (mvmvif->phy_ctxt->ref == 1) {
3032                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3033                                                &chandef, 1, 1);
3034                 if (ret)
3035                         goto out_unlock;
3036         } else {
3037                 /*
3038                  * The PHY context is shared with other MACs. Need to remove the
3039                  * P2P Device from the binding, allocate an new PHY context and
3040                  * create a new binding
3041                  */
3042                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3043                 if (!phy_ctxt) {
3044                         ret = -ENOSPC;
3045                         goto out_unlock;
3046                 }
3047
3048                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3049                                                1, 1);
3050                 if (ret) {
3051                         IWL_ERR(mvm, "Failed to change PHY context\n");
3052                         goto out_unlock;
3053                 }
3054
3055                 /* Unbind the P2P_DEVICE from the current PHY context */
3056                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3057                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3058                         goto out_unlock;
3059
3060                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3061
3062                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3063                 mvmvif->phy_ctxt = phy_ctxt;
3064
3065                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3066                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3067                         goto out_unlock;
3068
3069                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3070         }
3071
3072 schedule_time_event:
3073         /* Schedule the time events */
3074         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3075
3076 out_unlock:
3077         mutex_unlock(&mvm->mutex);
3078         IWL_DEBUG_MAC80211(mvm, "leave\n");
3079         return ret;
3080 }
3081
3082 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3083 {
3084         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3085
3086         IWL_DEBUG_MAC80211(mvm, "enter\n");
3087
3088         mutex_lock(&mvm->mutex);
3089         iwl_mvm_stop_roc(mvm);
3090         mutex_unlock(&mvm->mutex);
3091
3092         IWL_DEBUG_MAC80211(mvm, "leave\n");
3093         return 0;
3094 }
3095
3096 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3097                                  struct ieee80211_chanctx_conf *ctx)
3098 {
3099         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3100         struct iwl_mvm_phy_ctxt *phy_ctxt;
3101         int ret;
3102
3103         lockdep_assert_held(&mvm->mutex);
3104
3105         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3106
3107         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3108         if (!phy_ctxt) {
3109                 ret = -ENOSPC;
3110                 goto out;
3111         }
3112
3113         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3114                                        ctx->rx_chains_static,
3115                                        ctx->rx_chains_dynamic);
3116         if (ret) {
3117                 IWL_ERR(mvm, "Failed to add PHY context\n");
3118                 goto out;
3119         }
3120
3121         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3122         *phy_ctxt_id = phy_ctxt->id;
3123 out:
3124         return ret;
3125 }
3126
3127 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3128                                struct ieee80211_chanctx_conf *ctx)
3129 {
3130         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3131         int ret;
3132
3133         mutex_lock(&mvm->mutex);
3134         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3135         mutex_unlock(&mvm->mutex);
3136
3137         return ret;
3138 }
3139
3140 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3141                                      struct ieee80211_chanctx_conf *ctx)
3142 {
3143         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3144         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3145
3146         lockdep_assert_held(&mvm->mutex);
3147
3148         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3149 }
3150
3151 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3152                                    struct ieee80211_chanctx_conf *ctx)
3153 {
3154         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3155
3156         mutex_lock(&mvm->mutex);
3157         __iwl_mvm_remove_chanctx(mvm, ctx);
3158         mutex_unlock(&mvm->mutex);
3159 }
3160
3161 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3162                                    struct ieee80211_chanctx_conf *ctx,
3163                                    u32 changed)
3164 {
3165         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3166         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3167         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3168
3169         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3170                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3171                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3172                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3173                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3174                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3175                       phy_ctxt->ref, changed))
3176                 return;
3177
3178         mutex_lock(&mvm->mutex);
3179         iwl_mvm_bt_coex_vif_change(mvm);
3180         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3181                                  ctx->rx_chains_static,
3182                                  ctx->rx_chains_dynamic);
3183         mutex_unlock(&mvm->mutex);
3184 }
3185
3186 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3187                                         struct ieee80211_vif *vif,
3188                                         struct ieee80211_chanctx_conf *ctx,
3189                                         bool switching_chanctx)
3190 {
3191         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3192         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3193         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3194         int ret;
3195
3196         lockdep_assert_held(&mvm->mutex);
3197
3198         mvmvif->phy_ctxt = phy_ctxt;
3199
3200         switch (vif->type) {
3201         case NL80211_IFTYPE_AP:
3202                 /* only needed if we're switching chanctx (i.e. during CSA) */
3203                 if (switching_chanctx) {
3204                         mvmvif->ap_ibss_active = true;
3205                         break;
3206                 }
3207         case NL80211_IFTYPE_ADHOC:
3208                 /*
3209                  * The AP binding flow is handled as part of the start_ap flow
3210                  * (in bss_info_changed), similarly for IBSS.
3211                  */
3212                 ret = 0;
3213                 goto out;
3214         case NL80211_IFTYPE_STATION:
3215                 break;
3216         case NL80211_IFTYPE_MONITOR:
3217                 /* always disable PS when a monitor interface is active */
3218                 mvmvif->ps_disabled = true;
3219                 break;
3220         default:
3221                 ret = -EINVAL;
3222                 goto out;
3223         }
3224
3225         ret = iwl_mvm_binding_add_vif(mvm, vif);
3226         if (ret)
3227                 goto out;
3228
3229         /*
3230          * Power state must be updated before quotas,
3231          * otherwise fw will complain.
3232          */
3233         iwl_mvm_power_update_mac(mvm);
3234
3235         /* Setting the quota at this stage is only required for monitor
3236          * interfaces. For the other types, the bss_info changed flow
3237          * will handle quota settings.
3238          */
3239         if (vif->type == NL80211_IFTYPE_MONITOR) {
3240                 mvmvif->monitor_active = true;
3241                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3242                 if (ret)
3243                         goto out_remove_binding;
3244
3245                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3246                 if (ret)
3247                         goto out_remove_binding;
3248
3249         }
3250
3251         /* Handle binding during CSA */
3252         if (vif->type == NL80211_IFTYPE_AP) {
3253                 iwl_mvm_update_quotas(mvm, false, NULL);
3254                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3255         }
3256
3257         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3258                 u32 duration = 2 * vif->bss_conf.beacon_int;
3259
3260                 /* iwl_mvm_protect_session() reads directly from the
3261                  * device (the system time), so make sure it is
3262                  * available.
3263                  */
3264                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3265                 if (ret)
3266                         goto out_remove_binding;
3267
3268                 /* Protect the session to make sure we hear the first
3269                  * beacon on the new channel.
3270                  */
3271                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3272                                         vif->bss_conf.beacon_int / 2,
3273                                         true);
3274
3275                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3276
3277                 iwl_mvm_update_quotas(mvm, false, NULL);
3278         }
3279
3280         goto out;
3281
3282 out_remove_binding:
3283         iwl_mvm_binding_remove_vif(mvm, vif);
3284         iwl_mvm_power_update_mac(mvm);
3285 out:
3286         if (ret)
3287                 mvmvif->phy_ctxt = NULL;
3288         return ret;
3289 }
3290 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3291                                       struct ieee80211_vif *vif,
3292                                       struct ieee80211_chanctx_conf *ctx)
3293 {
3294         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3295         int ret;
3296
3297         mutex_lock(&mvm->mutex);
3298         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3299         mutex_unlock(&mvm->mutex);
3300
3301         return ret;
3302 }
3303
3304 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3305                                            struct ieee80211_vif *vif,
3306                                            struct ieee80211_chanctx_conf *ctx,
3307                                            bool switching_chanctx)
3308 {
3309         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3310         struct ieee80211_vif *disabled_vif = NULL;
3311
3312         lockdep_assert_held(&mvm->mutex);
3313
3314         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3315
3316         switch (vif->type) {
3317         case NL80211_IFTYPE_ADHOC:
3318                 goto out;
3319         case NL80211_IFTYPE_MONITOR:
3320                 mvmvif->monitor_active = false;
3321                 mvmvif->ps_disabled = false;
3322                 iwl_mvm_rm_snif_sta(mvm, vif);
3323                 break;
3324         case NL80211_IFTYPE_AP:
3325                 /* This part is triggered only during CSA */
3326                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3327                         goto out;
3328
3329                 mvmvif->csa_countdown = false;
3330
3331                 /* Set CS bit on all the stations */
3332                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3333
3334                 /* Save blocked iface, the timeout is set on the next beacon */
3335                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3336
3337                 mvmvif->ap_ibss_active = false;
3338                 break;
3339         case NL80211_IFTYPE_STATION:
3340                 if (!switching_chanctx)
3341                         break;
3342
3343                 disabled_vif = vif;
3344
3345                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3346                 break;
3347         default:
3348                 break;
3349         }
3350
3351         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3352         iwl_mvm_binding_remove_vif(mvm, vif);
3353
3354 out:
3355         mvmvif->phy_ctxt = NULL;
3356         iwl_mvm_power_update_mac(mvm);
3357 }
3358
3359 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3360                                          struct ieee80211_vif *vif,
3361                                          struct ieee80211_chanctx_conf *ctx)
3362 {
3363         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3364
3365         mutex_lock(&mvm->mutex);
3366         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3367         mutex_unlock(&mvm->mutex);
3368 }
3369
3370 static int
3371 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3372                                 struct ieee80211_vif_chanctx_switch *vifs)
3373 {
3374         int ret;
3375
3376         mutex_lock(&mvm->mutex);
3377         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3378         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3379
3380         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3381         if (ret) {
3382                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3383                 goto out_reassign;
3384         }
3385
3386         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3387                                            true);
3388         if (ret) {
3389                 IWL_ERR(mvm,
3390                         "failed to assign new_ctx during channel switch\n");
3391                 goto out_remove;
3392         }
3393
3394         /* we don't support TDLS during DCM - can be caused by channel switch */
3395         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3396                 iwl_mvm_teardown_tdls_peers(mvm);
3397
3398         goto out;
3399
3400 out_remove:
3401         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3402
3403 out_reassign:
3404         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3405                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3406                 goto out_restart;
3407         }
3408
3409         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3410                                          true)) {
3411                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3412                 goto out_restart;
3413         }
3414
3415         goto out;
3416
3417 out_restart:
3418         /* things keep failing, better restart the hw */
3419         iwl_mvm_nic_restart(mvm, false);
3420
3421 out:
3422         mutex_unlock(&mvm->mutex);
3423
3424         return ret;
3425 }
3426
3427 static int
3428 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3429                                     struct ieee80211_vif_chanctx_switch *vifs)
3430 {
3431         int ret;
3432
3433         mutex_lock(&mvm->mutex);
3434         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3435
3436         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3437                                            true);
3438         if (ret) {
3439                 IWL_ERR(mvm,
3440                         "failed to assign new_ctx during channel switch\n");
3441                 goto out_reassign;
3442         }
3443
3444         goto out;
3445
3446 out_reassign:
3447         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3448                                          true)) {
3449                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3450                 goto out_restart;
3451         }
3452
3453         goto out;
3454
3455 out_restart:
3456         /* things keep failing, better restart the hw */
3457         iwl_mvm_nic_restart(mvm, false);
3458
3459 out:
3460         mutex_unlock(&mvm->mutex);
3461
3462         return ret;
3463 }
3464
3465 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3466                                       struct ieee80211_vif_chanctx_switch *vifs,
3467                                       int n_vifs,
3468                                       enum ieee80211_chanctx_switch_mode mode)
3469 {
3470         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3471         int ret;
3472
3473         /* we only support a single-vif right now */
3474         if (n_vifs > 1)
3475                 return -EOPNOTSUPP;
3476
3477         switch (mode) {
3478         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3479                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3480                 break;
3481         case CHANCTX_SWMODE_REASSIGN_VIF:
3482                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3483                 break;
3484         default:
3485                 ret = -EOPNOTSUPP;
3486                 break;
3487         }
3488
3489         return ret;
3490 }
3491
3492 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3493                            struct ieee80211_sta *sta,
3494                            bool set)
3495 {
3496         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3497         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3498
3499         if (!mvm_sta || !mvm_sta->vif) {
3500                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3501                 return -EINVAL;
3502         }
3503
3504         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3505 }
3506
3507 #ifdef CONFIG_NL80211_TESTMODE
3508 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3509         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3510         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3511         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3512 };
3513
3514 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3515                                       struct ieee80211_vif *vif,
3516                                       void *data, int len)
3517 {
3518         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3519         int err;
3520         u32 noa_duration;
3521
3522         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3523         if (err)
3524                 return err;
3525
3526         if (!tb[IWL_MVM_TM_ATTR_CMD])
3527                 return -EINVAL;
3528
3529         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3530         case IWL_MVM_TM_CMD_SET_NOA:
3531                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3532                     !vif->bss_conf.enable_beacon ||
3533                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3534                         return -EINVAL;
3535
3536                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3537                 if (noa_duration >= vif->bss_conf.beacon_int)
3538                         return -EINVAL;
3539
3540                 mvm->noa_duration = noa_duration;
3541                 mvm->noa_vif = vif;
3542
3543                 return iwl_mvm_update_quotas(mvm, false, NULL);
3544         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3545                 /* must be associated client vif - ignore authorized */
3546                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3547                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3548                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3549                         return -EINVAL;
3550
3551                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3552                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3553                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3554         }
3555
3556         return -EOPNOTSUPP;
3557 }
3558
3559 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3560                                     struct ieee80211_vif *vif,
3561                                     void *data, int len)
3562 {
3563         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3564         int err;
3565
3566         mutex_lock(&mvm->mutex);
3567         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3568         mutex_unlock(&mvm->mutex);
3569
3570         return err;
3571 }
3572 #endif
3573
3574 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3575                                    struct ieee80211_vif *vif,
3576                                    struct ieee80211_channel_switch *chsw)
3577 {
3578         /* By implementing this operation, we prevent mac80211 from
3579          * starting its own channel switch timer, so that we can call
3580          * ieee80211_chswitch_done() ourselves at the right time
3581          * (which is when the absence time event starts).
3582          */
3583
3584         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3585                            "dummy channel switch op\n");
3586 }
3587
3588 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3589                                       struct ieee80211_vif *vif,
3590                                       struct ieee80211_channel_switch *chsw)
3591 {
3592         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3593         struct ieee80211_vif *csa_vif;
3594         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3595         u32 apply_time;
3596         int ret;
3597
3598         mutex_lock(&mvm->mutex);
3599
3600         mvmvif->csa_failed = false;
3601
3602         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3603                            chsw->chandef.center_freq1);
3604
3605         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3606
3607         switch (vif->type) {
3608         case NL80211_IFTYPE_AP:
3609                 csa_vif =
3610                         rcu_dereference_protected(mvm->csa_vif,
3611                                                   lockdep_is_held(&mvm->mutex));
3612                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3613                               "Another CSA is already in progress")) {
3614                         ret = -EBUSY;
3615                         goto out_unlock;
3616                 }
3617
3618                 rcu_assign_pointer(mvm->csa_vif, vif);
3619
3620                 if (WARN_ONCE(mvmvif->csa_countdown,
3621                               "Previous CSA countdown didn't complete")) {
3622                         ret = -EBUSY;
3623                         goto out_unlock;
3624                 }
3625
3626                 break;
3627         case NL80211_IFTYPE_STATION:
3628                 /* Schedule the time event to a bit before beacon 1,
3629                  * to make sure we're in the new channel when the
3630                  * GO/AP arrives.
3631                  */
3632                 apply_time = chsw->device_timestamp +
3633                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3634                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3635
3636                 if (chsw->block_tx)
3637                         iwl_mvm_csa_client_absent(mvm, vif);
3638
3639                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3640                                             apply_time);
3641                 if (mvmvif->bf_data.bf_enabled) {
3642                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3643                         if (ret)
3644                                 goto out_unlock;
3645                 }
3646
3647                 break;
3648         default:
3649                 break;
3650         }
3651
3652         mvmvif->ps_disabled = true;
3653
3654         ret = iwl_mvm_power_update_ps(mvm);
3655         if (ret)
3656                 goto out_unlock;
3657
3658         /* we won't be on this channel any longer */
3659         iwl_mvm_teardown_tdls_peers(mvm);
3660
3661 out_unlock:
3662         mutex_unlock(&mvm->mutex);
3663
3664         return ret;
3665 }
3666
3667 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3668                                        struct ieee80211_vif *vif)
3669 {
3670         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3671         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3672         int ret;
3673
3674         mutex_lock(&mvm->mutex);
3675
3676         if (mvmvif->csa_failed) {
3677                 mvmvif->csa_failed = false;
3678                 ret = -EIO;
3679                 goto out_unlock;
3680         }
3681
3682         if (vif->type == NL80211_IFTYPE_STATION) {
3683                 struct iwl_mvm_sta *mvmsta;
3684
3685                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3686                                                           mvmvif->ap_sta_id);
3687
3688                 if (WARN_ON(!mvmsta)) {
3689                         ret = -EIO;
3690                         goto out_unlock;
3691                 }
3692
3693                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3694
3695                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3696
3697                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3698                 if (ret)
3699                         goto out_unlock;
3700
3701                 iwl_mvm_stop_session_protection(mvm, vif);
3702         }
3703
3704         mvmvif->ps_disabled = false;
3705
3706         ret = iwl_mvm_power_update_ps(mvm);
3707
3708 out_unlock:
3709         mutex_unlock(&mvm->mutex);
3710
3711         return ret;
3712 }
3713
3714 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3715                               struct ieee80211_vif *vif, u32 queues, bool drop)
3716 {
3717         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3718         struct iwl_mvm_vif *mvmvif;
3719         struct iwl_mvm_sta *mvmsta;
3720         struct ieee80211_sta *sta;
3721         int i;
3722         u32 msk = 0;
3723
3724         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3725                 return;
3726
3727         mutex_lock(&mvm->mutex);
3728         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3729
3730         /* flush the AP-station and all TDLS peers */
3731         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3732                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3733                                                 lockdep_is_held(&mvm->mutex));
3734                 if (IS_ERR_OR_NULL(sta))
3735                         continue;
3736
3737                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3738                 if (mvmsta->vif != vif)
3739                         continue;
3740
3741                 /* make sure only TDLS peers or the AP are flushed */
3742                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3743
3744                 msk |= mvmsta->tfd_queue_msk;
3745         }
3746
3747         if (drop) {
3748                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3749                         IWL_ERR(mvm, "flush request fail\n");
3750                 mutex_unlock(&mvm->mutex);
3751         } else {
3752                 mutex_unlock(&mvm->mutex);
3753
3754                 /* this can take a while, and we may need/want other operations
3755                  * to succeed while doing this, so do it without the mutex held
3756                  */
3757                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3758         }
3759 }
3760
3761 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3762                                   struct survey_info *survey)
3763 {
3764         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3765         int ret;
3766
3767         memset(survey, 0, sizeof(*survey));
3768
3769         /* only support global statistics right now */
3770         if (idx != 0)
3771                 return -ENOENT;
3772
3773         if (fw_has_capa(&mvm->fw->ucode_capa,
3774                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3775                 return -ENOENT;
3776
3777         mutex_lock(&mvm->mutex);
3778
3779         if (mvm->ucode_loaded) {
3780                 ret = iwl_mvm_request_statistics(mvm, false);
3781                 if (ret)
3782                         goto out;
3783         }
3784
3785         survey->filled = SURVEY_INFO_TIME |
3786                          SURVEY_INFO_TIME_RX |
3787                          SURVEY_INFO_TIME_TX |
3788                          SURVEY_INFO_TIME_SCAN;
3789         survey->time = mvm->accu_radio_stats.on_time_rf +
3790                        mvm->radio_stats.on_time_rf;
3791         do_div(survey->time, USEC_PER_MSEC);
3792
3793         survey->time_rx = mvm->accu_radio_stats.rx_time +
3794                           mvm->radio_stats.rx_time;
3795         do_div(survey->time_rx, USEC_PER_MSEC);
3796
3797         survey->time_tx = mvm->accu_radio_stats.tx_time +
3798                           mvm->radio_stats.tx_time;
3799         do_div(survey->time_tx, USEC_PER_MSEC);
3800
3801         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3802                             mvm->radio_stats.on_time_scan;
3803         do_div(survey->time_scan, USEC_PER_MSEC);
3804
3805         ret = 0;
3806  out:
3807         mutex_unlock(&mvm->mutex);
3808         return ret;
3809 }
3810
3811 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3812                                        struct ieee80211_vif *vif,
3813                                        struct ieee80211_sta *sta,
3814                                        struct station_info *sinfo)
3815 {
3816         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3817         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3818         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3819
3820         if (fw_has_capa(&mvm->fw->ucode_capa,
3821                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3822                 return;
3823
3824         /* if beacon filtering isn't on mac80211 does it anyway */
3825         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3826                 return;
3827
3828         if (!vif->bss_conf.assoc)
3829                 return;
3830
3831         mutex_lock(&mvm->mutex);
3832
3833         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3834                 goto unlock;
3835
3836         if (iwl_mvm_request_statistics(mvm, false))
3837                 goto unlock;
3838
3839         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3840                            mvmvif->beacon_stats.accu_num_beacons;
3841         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3842         if (mvmvif->beacon_stats.avg_signal) {
3843                 /* firmware only reports a value after RXing a few beacons */
3844                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3845                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3846         }
3847  unlock:
3848         mutex_unlock(&mvm->mutex);
3849 }
3850
3851 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3852                                         struct ieee80211_vif *vif,
3853                                         const struct ieee80211_event *event)
3854 {
3855 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3856         do {                                                    \
3857                 if ((_cnt) && --(_cnt))                         \
3858                         break;                                  \
3859                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3860         } while (0)
3861
3862         struct iwl_fw_dbg_trigger_tlv *trig;
3863         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3864
3865         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3866                 return;
3867
3868         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3869         trig_mlme = (void *)trig->data;
3870         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3871                 return;
3872
3873         if (event->u.mlme.data == ASSOC_EVENT) {
3874                 if (event->u.mlme.status == MLME_DENIED)
3875                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3876                                            trig_mlme->stop_assoc_denied,
3877                                            "DENIED ASSOC: reason %d",
3878                                             event->u.mlme.reason);
3879                 else if (event->u.mlme.status == MLME_TIMEOUT)
3880                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3881                                            trig_mlme->stop_assoc_timeout,
3882                                            "ASSOC TIMEOUT");
3883         } else if (event->u.mlme.data == AUTH_EVENT) {
3884                 if (event->u.mlme.status == MLME_DENIED)
3885                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3886                                            trig_mlme->stop_auth_denied,
3887                                            "DENIED AUTH: reason %d",
3888                                            event->u.mlme.reason);
3889                 else if (event->u.mlme.status == MLME_TIMEOUT)
3890                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3891                                            trig_mlme->stop_auth_timeout,
3892                                            "AUTH TIMEOUT");
3893         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3894                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3895                                    trig_mlme->stop_rx_deauth,
3896                                    "DEAUTH RX %d", event->u.mlme.reason);
3897         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3898                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3899                                    trig_mlme->stop_tx_deauth,
3900                                    "DEAUTH TX %d", event->u.mlme.reason);
3901         }
3902 #undef CHECK_MLME_TRIGGER
3903 }
3904
3905 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3906                                           struct ieee80211_vif *vif,
3907                                           const struct ieee80211_event *event)
3908 {
3909         struct iwl_fw_dbg_trigger_tlv *trig;
3910         struct iwl_fw_dbg_trigger_ba *ba_trig;
3911
3912         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3913                 return;
3914
3915         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3916         ba_trig = (void *)trig->data;
3917         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3918                 return;
3919
3920         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3921                 return;
3922
3923         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3924                                     "BAR received from %pM, tid %d, ssn %d",
3925                                     event->u.ba.sta->addr, event->u.ba.tid,
3926                                     event->u.ba.ssn);
3927 }
3928
3929 static void
3930 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3931                                      struct ieee80211_vif *vif,
3932                                      const struct ieee80211_event *event)
3933 {
3934         struct iwl_fw_dbg_trigger_tlv *trig;
3935         struct iwl_fw_dbg_trigger_ba *ba_trig;
3936
3937         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3938                 return;
3939
3940         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3941         ba_trig = (void *)trig->data;
3942         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3943                 return;
3944
3945         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3946                 return;
3947
3948         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3949                                     "Frame from %pM timed out, tid %d",
3950                                     event->u.ba.sta->addr, event->u.ba.tid);
3951 }
3952
3953 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3954                                        struct ieee80211_vif *vif,
3955                                        const struct ieee80211_event *event)
3956 {
3957         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3958
3959         switch (event->type) {
3960         case MLME_EVENT:
3961                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3962                 break;
3963         case BAR_RX_EVENT:
3964                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3965                 break;
3966         case BA_FRAME_TIMEOUT:
3967                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3968                 break;
3969         default:
3970                 break;
3971         }
3972 }
3973
3974 const struct ieee80211_ops iwl_mvm_hw_ops = {
3975         .tx = iwl_mvm_mac_tx,
3976         .ampdu_action = iwl_mvm_mac_ampdu_action,
3977         .start = iwl_mvm_mac_start,
3978         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3979         .stop = iwl_mvm_mac_stop,
3980         .add_interface = iwl_mvm_mac_add_interface,
3981         .remove_interface = iwl_mvm_mac_remove_interface,
3982         .config = iwl_mvm_mac_config,
3983         .prepare_multicast = iwl_mvm_prepare_multicast,
3984         .configure_filter = iwl_mvm_configure_filter,
3985         .config_iface_filter = iwl_mvm_config_iface_filter,
3986         .bss_info_changed = iwl_mvm_bss_info_changed,
3987         .hw_scan = iwl_mvm_mac_hw_scan,
3988         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3989         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3990         .sta_state = iwl_mvm_mac_sta_state,
3991         .sta_notify = iwl_mvm_mac_sta_notify,
3992         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3993         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3994         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3995         .sta_rc_update = iwl_mvm_sta_rc_update,
3996         .conf_tx = iwl_mvm_mac_conf_tx,
3997         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3998         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3999         .flush = iwl_mvm_mac_flush,
4000         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4001         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4002         .set_key = iwl_mvm_mac_set_key,
4003         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4004         .remain_on_channel = iwl_mvm_roc,
4005         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4006         .add_chanctx = iwl_mvm_add_chanctx,
4007         .remove_chanctx = iwl_mvm_remove_chanctx,
4008         .change_chanctx = iwl_mvm_change_chanctx,
4009         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4010         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4011         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4012
4013         .start_ap = iwl_mvm_start_ap_ibss,
4014         .stop_ap = iwl_mvm_stop_ap_ibss,
4015         .join_ibss = iwl_mvm_start_ap_ibss,
4016         .leave_ibss = iwl_mvm_stop_ap_ibss,
4017
4018         .set_tim = iwl_mvm_set_tim,
4019
4020         .channel_switch = iwl_mvm_channel_switch,
4021         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4022         .post_channel_switch = iwl_mvm_post_channel_switch,
4023
4024         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4025         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4026         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4027
4028         .event_callback = iwl_mvm_mac_event_callback,
4029
4030         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4031
4032 #ifdef CONFIG_PM_SLEEP
4033         /* look at d3.c */
4034         .suspend = iwl_mvm_suspend,
4035         .resume = iwl_mvm_resume,
4036         .set_wakeup = iwl_mvm_set_wakeup,
4037         .set_rekey_data = iwl_mvm_set_rekey_data,
4038 #if IS_ENABLED(CONFIG_IPV6)
4039         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4040 #endif
4041         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4042 #endif
4043         .get_survey = iwl_mvm_mac_get_survey,
4044         .sta_statistics = iwl_mvm_mac_sta_statistics,
4045 };