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         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 614
 615 #ifdef CONFIG_PM_SLEEP
 616         if (iwl_mvm_is_d0i3_supported(mvm) &&
 617             device_can_wakeup(mvm->trans->dev)) {
 618                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 619                 hw->wiphy->wowlan = &mvm->wowlan;
 620         }
 621
 622         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 623             mvm->trans->ops->d3_suspend &&
 624             mvm->trans->ops->d3_resume &&
 625             device_can_wakeup(mvm->trans->dev)) {
 626                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 627                                      WIPHY_WOWLAN_DISCONNECT |
 628                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 629                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 630                                      WIPHY_WOWLAN_NET_DETECT;
 631                 if (!iwlwifi_mod_params.sw_crypto)
 632                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 633                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 634                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 635
 636                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 637                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 638                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 639                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 640                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 641                 hw->wiphy->wowlan = &mvm->wowlan;
 642         }
 643 #endif
 644
 645 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 646         /* assign default bcast filtering configuration */
 647         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 648 #endif
 649
 650         ret = iwl_mvm_leds_init(mvm);
 651         if (ret)
 652                 return ret;
 653
 654         if (fw_has_capa(&mvm->fw->ucode_capa,
 655                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 656                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 657                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 658                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 659         }
 660
 661         if (fw_has_capa(&mvm->fw->ucode_capa,
 662                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 663                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 664                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 665         }
 666
 667         hw->netdev_features |= mvm->cfg->features;
 668         if (!iwl_mvm_is_csum_supported(mvm))
 669                 hw->netdev_features &= ~NETIF_F_RXCSUM;
 670
 671         if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 672                 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 673                         NETIF_F_TSO | NETIF_F_TSO6;
 674
 675         ret = ieee80211_register_hw(mvm->hw);
 676         if (ret)
 677                 iwl_mvm_leds_exit(mvm);
 678
 679         return ret;
 680 }
 681
 682 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 683                              struct ieee80211_sta *sta,
 684                              struct sk_buff *skb)
 685 {
 686         struct iwl_mvm_sta *mvmsta;
 687         bool defer = false;
 688
 689         /*
 690          * double check the IN_D0I3 flag both before and after
 691          * taking the spinlock, in order to prevent taking
 692          * the spinlock when not needed.
 693          */
 694         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 695                 return false;
 696
 697         spin_lock(&mvm->d0i3_tx_lock);
 698         /*
 699          * testing the flag again ensures the skb dequeue
 700          * loop (on d0i3 exit) hasn't run yet.
 701          */
 702         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 703                 goto out;
 704
 705         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 706         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 707             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 708                 goto out;
 709
 710         __skb_queue_tail(&mvm->d0i3_tx, skb);
 711         ieee80211_stop_queues(mvm->hw);
 712
 713         /* trigger wakeup */
 714         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 715         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 716
 717         defer = true;
 718 out:
 719         spin_unlock(&mvm->d0i3_tx_lock);
 720         return defer;
 721 }
 722
 723 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 724                            struct ieee80211_tx_control *control,
 725                            struct sk_buff *skb)
 726 {
 727         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 728         struct ieee80211_sta *sta = control->sta;
 729         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 730         struct ieee80211_hdr *hdr = (void *)skb->data;
 731
 732         if (iwl_mvm_is_radio_killed(mvm)) {
 733                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 734                 goto drop;
 735         }
 736
 737         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 738             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 739             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 740                 goto drop;
 741
 742         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 743         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 744                      ieee80211_is_mgmt(hdr->frame_control) &&
 745                      !ieee80211_is_deauth(hdr->frame_control) &&
 746                      !ieee80211_is_disassoc(hdr->frame_control) &&
 747                      !ieee80211_is_action(hdr->frame_control)))
 748                 sta = NULL;
 749
 750         if (sta) {
 751                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 752                         return;
 753                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 754                         goto drop;
 755                 return;
 756         }
 757
 758         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 759                 goto drop;
 760         return;
 761  drop:
 762         ieee80211_free_txskb(hw, skb);
 763 }
 764
 765 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 766 {
 767         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 768                 return false;
 769         return true;
 770 }
 771
 772 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 773 {
 774         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 775                 return false;
 776         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 777                 return true;
 778
 779         /* enabled by default */
 780         return true;
 781 }
 782
 783 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 784         do {                                                    \
 785                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 786                         break;                                  \
 787                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 788         } while (0)
 789
 790 static void
 791 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 792                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 793                             enum ieee80211_ampdu_mlme_action action)
 794 {
 795         struct iwl_fw_dbg_trigger_tlv *trig;
 796         struct iwl_fw_dbg_trigger_ba *ba_trig;
 797
 798         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 799                 return;
 800
 801         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 802         ba_trig = (void *)trig->data;
 803
 804         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 805                 return;
 806
 807         switch (action) {
 808         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 809                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 810                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 811
 812                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 813                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 814                                  sta->addr, tid, tid_data->ssn);
 815                 break;
 816                 }
 817         case IEEE80211_AMPDU_TX_STOP_CONT:
 818                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 819                                  "TX AGG STOP: MAC %pM tid %d\n",
 820                                  sta->addr, tid);
 821                 break;
 822         case IEEE80211_AMPDU_RX_START:
 823                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 824                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 825                                  sta->addr, tid, rx_ba_ssn);
 826                 break;
 827         case IEEE80211_AMPDU_RX_STOP:
 828                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 829                                  "RX AGG STOP: MAC %pM tid %d\n",
 830                                  sta->addr, tid);
 831                 break;
 832         default:
 833                 break;
 834         }
 835 }
 836
 837 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 838                                     struct ieee80211_vif *vif,
 839                                     struct ieee80211_ampdu_params *params)
 840 {
 841         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 842         int ret;
 843         bool tx_agg_ref = false;
 844         struct ieee80211_sta *sta = params->sta;
 845         enum ieee80211_ampdu_mlme_action action = params->action;
 846         u16 tid = params->tid;
 847         u16 *ssn = &params->ssn;
 848         u8 buf_size = params->buf_size;
 849         bool amsdu = params->amsdu;
 850
 851         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 852                      sta->addr, tid, action);
 853
 854         if (!(mvm->nvm_data->sku_cap_11n_enable))
 855                 return -EACCES;
 856
 857         /* return from D0i3 before starting a new Tx aggregation */
 858         switch (action) {
 859         case IEEE80211_AMPDU_TX_START:
 860         case IEEE80211_AMPDU_TX_STOP_CONT:
 861         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 862         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 863         case IEEE80211_AMPDU_TX_OPERATIONAL:
 864                 /*
 865                  * for tx start, wait synchronously until D0i3 exit to
 866                  * get the correct sequence number for the tid.
 867                  * additionally, some other ampdu actions use direct
 868                  * target access, which is not handled automatically
 869                  * by the trans layer (unlike commands), so wait for
 870                  * d0i3 exit in these cases as well.
 871                  */
 872                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 873                 if (ret)
 874                         return ret;
 875
 876                 tx_agg_ref = true;
 877                 break;
 878         default:
 879                 break;
 880         }
 881
 882         mutex_lock(&mvm->mutex);
 883
 884         switch (action) {
 885         case IEEE80211_AMPDU_RX_START:
 886                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 887                         ret = -EINVAL;
 888                         break;
 889                 }
 890                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
 891                 break;
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
 894                 break;
 895         case IEEE80211_AMPDU_TX_START:
 896                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 897                         ret = -EINVAL;
 898                         break;
 899                 }
 900                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 901                 break;
 902         case IEEE80211_AMPDU_TX_STOP_CONT:
 903                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 904                 break;
 905         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 906         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 907                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 908                 break;
 909         case IEEE80211_AMPDU_TX_OPERATIONAL:
 910                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 911                                               buf_size, amsdu);
 912                 break;
 913         default:
 914                 WARN_ON_ONCE(1);
 915                 ret = -EINVAL;
 916                 break;
 917         }
 918
 919         if (!ret) {
 920                 u16 rx_ba_ssn = 0;
 921
 922                 if (action == IEEE80211_AMPDU_RX_START)
 923                         rx_ba_ssn = *ssn;
 924
 925                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 926                                             rx_ba_ssn, action);
 927         }
 928         mutex_unlock(&mvm->mutex);
 929
 930         /*
 931          * If the tid is marked as started, we won't use it for offloaded
 932          * traffic on the next D0i3 entry. It's safe to unref.
 933          */
 934         if (tx_agg_ref)
 935                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 936
 937         return ret;
 938 }
 939
 940 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 941                                      struct ieee80211_vif *vif)
 942 {
 943         struct iwl_mvm *mvm = data;
 944         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 945
 946         mvmvif->uploaded = false;
 947         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 948
 949         spin_lock_bh(&mvm->time_event_lock);
 950         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 951         spin_unlock_bh(&mvm->time_event_lock);
 952
 953         mvmvif->phy_ctxt = NULL;
 954         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 955 }
 956
 957 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 958 {
 959         /* clear the D3 reconfig, we only need it to avoid dumping a
 960          * firmware coredump on reconfiguration, we shouldn't do that
 961          * on D3->D0 transition
 962          */
 963         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 964                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 965                 iwl_mvm_fw_error_dump(mvm);
 966         }
 967
 968         /* cleanup all stale references (scan, roc), but keep the
 969          * ucode_down ref until reconfig is complete
 970          */
 971         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 972
 973         iwl_mvm_stop_device(mvm);
 974
 975         mvm->scan_status = 0;
 976         mvm->ps_disabled = false;
 977         mvm->calibrating = false;
 978
 979         /* just in case one was running */
 980         iwl_mvm_cleanup_roc_te(mvm);
 981         ieee80211_remain_on_channel_expired(mvm->hw);
 982
 983         /*
 984          * cleanup all interfaces, even inactive ones, as some might have
 985          * gone down during the HW restart
 986          */
 987         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 988
 989         mvm->p2p_device_vif = NULL;
 990         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 991
 992         iwl_mvm_reset_phy_ctxts(mvm);
 993         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 994         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 995         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 996         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 997         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 998         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 999         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1000         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1001         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1002
1003         ieee80211_wake_queues(mvm->hw);
1004
1005         /* clear any stale d0i3 state */
1006         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1007
1008         mvm->vif_count = 0;
1009         mvm->rx_ba_sessions = 0;
1010         mvm->fw_dbg_conf = FW_DBG_INVALID;
1011
1012         /* keep statistics ticking */
1013         iwl_mvm_accu_radio_stats(mvm);
1014 }
1015
1016 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1017 {
1018         int ret;
1019
1020         lockdep_assert_held(&mvm->mutex);
1021
1022         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1023                 /* Clean up some internal and mac80211 state on restart */
1024                 iwl_mvm_restart_cleanup(mvm);
1025         } else {
1026                 /* Hold the reference to prevent runtime suspend while
1027                  * the start procedure runs.  It's a bit confusing
1028                  * that the UCODE_DOWN reference is taken, but it just
1029                  * means "UCODE is not UP yet". ( TODO: rename this
1030                  * reference).
1031                  */
1032                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1033         }
1034         ret = iwl_mvm_up(mvm);
1035
1036         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1037                 /* Something went wrong - we need to finish some cleanup
1038                  * that normally iwl_mvm_mac_restart_complete() below
1039                  * would do.
1040                  */
1041                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1042                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1043         }
1044
1045         return ret;
1046 }
1047
1048 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1049 {
1050         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1051         int ret;
1052
1053         /* Some hw restart cleanups must not hold the mutex */
1054         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1055                 /*
1056                  * Make sure we are out of d0i3. This is needed
1057                  * to make sure the reference accounting is correct
1058                  * (and there is no stale d0i3_exit_work).
1059                  */
1060                 wait_event_timeout(mvm->d0i3_exit_waitq,
1061                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1062                                              &mvm->status),
1063                                    HZ);
1064         }
1065
1066         mutex_lock(&mvm->mutex);
1067         ret = __iwl_mvm_mac_start(mvm);
1068         mutex_unlock(&mvm->mutex);
1069
1070         return ret;
1071 }
1072
1073 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1074 {
1075         int ret;
1076
1077         mutex_lock(&mvm->mutex);
1078
1079         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1080         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1081         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1082         if (ret)
1083                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1084                         ret);
1085
1086         /* allow transport/FW low power modes */
1087         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1088
1089         /*
1090          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1091          * of packets the FW sent out, so we must reconnect.
1092          */
1093         iwl_mvm_teardown_tdls_peers(mvm);
1094
1095         mutex_unlock(&mvm->mutex);
1096 }
1097
1098 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1099 {
1100         if (iwl_mvm_is_d0i3_supported(mvm) &&
1101             iwl_mvm_enter_d0i3_on_suspend(mvm))
1102                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1103                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1104                                                         &mvm->status),
1105                                               HZ),
1106                           "D0i3 exit on resume timed out\n");
1107 }
1108
1109 static void
1110 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1111                               enum ieee80211_reconfig_type reconfig_type)
1112 {
1113         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1114
1115         switch (reconfig_type) {
1116         case IEEE80211_RECONFIG_TYPE_RESTART:
1117                 iwl_mvm_restart_complete(mvm);
1118                 break;
1119         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1120                 iwl_mvm_resume_complete(mvm);
1121                 break;
1122         }
1123 }
1124
1125 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1126 {
1127         lockdep_assert_held(&mvm->mutex);
1128
1129         /* firmware counters are obviously reset now, but we shouldn't
1130          * partially track so also clear the fw_reset_accu counters.
1131          */
1132         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1133
1134         /* async_handlers_wk is now blocked */
1135
1136         /*
1137          * The work item could be running or queued if the
1138          * ROC time event stops just as we get here.
1139          */
1140         flush_work(&mvm->roc_done_wk);
1141
1142         iwl_mvm_stop_device(mvm);
1143
1144         iwl_mvm_async_handlers_purge(mvm);
1145         /* async_handlers_list is empty and will stay empty: HW is stopped */
1146
1147         /* the fw is stopped, the aux sta is dead: clean up driver state */
1148         iwl_mvm_del_aux_sta(mvm);
1149
1150         /*
1151          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1152          * won't be called in this case).
1153          * But make sure to cleanup interfaces that have gone down before/during
1154          * HW restart was requested.
1155          */
1156         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1157                 ieee80211_iterate_interfaces(mvm->hw, 0,
1158                                              iwl_mvm_cleanup_iterator, mvm);
1159
1160         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1161          * make sure there's nothing left there and warn if any is found.
1162          */
1163         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1164                 int i;
1165
1166                 for (i = 0; i < mvm->max_scans; i++) {
1167                         if (WARN_ONCE(mvm->scan_uid_status[i],
1168                                       "UMAC scan UID %d status was not cleaned\n",
1169                                       i))
1170                                 mvm->scan_uid_status[i] = 0;
1171                 }
1172         }
1173 }
1174
1175 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1176 {
1177         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179         flush_work(&mvm->d0i3_exit_work);
1180         flush_work(&mvm->async_handlers_wk);
1181         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1182         iwl_mvm_free_fw_dump_desc(mvm);
1183
1184         mutex_lock(&mvm->mutex);
1185         __iwl_mvm_mac_stop(mvm);
1186         mutex_unlock(&mvm->mutex);
1187
1188         /*
1189          * The worker might have been waiting for the mutex, let it run and
1190          * discover that its list is now empty.
1191          */
1192         cancel_work_sync(&mvm->async_handlers_wk);
1193 }
1194
1195 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1196 {
1197         u16 i;
1198
1199         lockdep_assert_held(&mvm->mutex);
1200
1201         for (i = 0; i < NUM_PHY_CTX; i++)
1202                 if (!mvm->phy_ctxts[i].ref)
1203                         return &mvm->phy_ctxts[i];
1204
1205         IWL_ERR(mvm, "No available PHY context\n");
1206         return NULL;
1207 }
1208
1209 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1210                                 s16 tx_power)
1211 {
1212         struct iwl_dev_tx_power_cmd cmd = {
1213                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1214                 .v2.mac_context_id =
1215                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1216                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1217         };
1218         int len = sizeof(cmd);
1219
1220         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1221                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1222
1223         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1224                 len = sizeof(cmd.v2);
1225
1226         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1227 }
1228
1229 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1230                                      struct ieee80211_vif *vif)
1231 {
1232         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1233         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1234         int ret;
1235
1236         mvmvif->mvm = mvm;
1237
1238         /*
1239          * make sure D0i3 exit is completed, otherwise a target access
1240          * during tx queue configuration could be done when still in
1241          * D0i3 state.
1242          */
1243         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1244         if (ret)
1245                 return ret;
1246
1247         /*
1248          * Not much to do here. The stack will not allow interface
1249          * types or combinations that we didn't advertise, so we
1250          * don't really have to check the types.
1251          */
1252
1253         mutex_lock(&mvm->mutex);
1254
1255         /* make sure that beacon statistics don't go backwards with FW reset */
1256         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1257                 mvmvif->beacon_stats.accu_num_beacons +=
1258                         mvmvif->beacon_stats.num_beacons;
1259
1260         /* Allocate resources for the MAC context, and add it to the fw  */
1261         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1262         if (ret)
1263                 goto out_unlock;
1264
1265         /* Counting number of interfaces is needed for legacy PM */
1266         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1267                 mvm->vif_count++;
1268
1269         /*
1270          * The AP binding flow can be done only after the beacon
1271          * template is configured (which happens only in the mac80211
1272          * start_ap() flow), and adding the broadcast station can happen
1273          * only after the binding.
1274          * In addition, since modifying the MAC before adding a bcast
1275          * station is not allowed by the FW, delay the adding of MAC context to
1276          * the point where we can also add the bcast station.
1277          * In short: there's not much we can do at this point, other than
1278          * allocating resources :)
1279          */
1280         if (vif->type == NL80211_IFTYPE_AP ||
1281             vif->type == NL80211_IFTYPE_ADHOC) {
1282                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1283                 if (ret) {
1284                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1285                         goto out_release;
1286                 }
1287
1288                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1289                 goto out_unlock;
1290         }
1291
1292         mvmvif->features |= hw->netdev_features;
1293
1294         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1295         if (ret)
1296                 goto out_release;
1297
1298         ret = iwl_mvm_power_update_mac(mvm);
1299         if (ret)
1300                 goto out_remove_mac;
1301
1302         /* beacon filtering */
1303         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1304         if (ret)
1305                 goto out_remove_mac;
1306
1307         if (!mvm->bf_allowed_vif &&
1308             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1309                 mvm->bf_allowed_vif = mvmvif;
1310                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1311                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1312         }
1313
1314         /*
1315          * P2P_DEVICE interface does not have a channel context assigned to it,
1316          * so a dedicated PHY context is allocated to it and the corresponding
1317          * MAC context is bound to it at this stage.
1318          */
1319         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1320
1321                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1322                 if (!mvmvif->phy_ctxt) {
1323                         ret = -ENOSPC;
1324                         goto out_free_bf;
1325                 }
1326
1327                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1328                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1329                 if (ret)
1330                         goto out_unref_phy;
1331
1332                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1333                 if (ret)
1334                         goto out_unbind;
1335
1336                 /* Save a pointer to p2p device vif, so it can later be used to
1337                  * update the p2p device MAC when a GO is started/stopped */
1338                 mvm->p2p_device_vif = vif;
1339         }
1340
1341         iwl_mvm_vif_dbgfs_register(mvm, vif);
1342         goto out_unlock;
1343
1344  out_unbind:
1345         iwl_mvm_binding_remove_vif(mvm, vif);
1346  out_unref_phy:
1347         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1348  out_free_bf:
1349         if (mvm->bf_allowed_vif == mvmvif) {
1350                 mvm->bf_allowed_vif = NULL;
1351                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1352                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1353         }
1354  out_remove_mac:
1355         mvmvif->phy_ctxt = NULL;
1356         iwl_mvm_mac_ctxt_remove(mvm, vif);
1357  out_release:
1358         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1359                 mvm->vif_count--;
1360
1361         iwl_mvm_mac_ctxt_release(mvm, vif);
1362  out_unlock:
1363         mutex_unlock(&mvm->mutex);
1364
1365         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1366
1367         return ret;
1368 }
1369
1370 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1371                                         struct ieee80211_vif *vif)
1372 {
1373         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1374
1375         if (tfd_msk) {
1376                 /*
1377                  * mac80211 first removes all the stations of the vif and
1378                  * then removes the vif. When it removes a station it also
1379                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1380                  * of all the stations of this vif are closed, and the queues
1381                  * of these AMPDU sessions are properly closed.
1382                  * We still need to take care of the shared queues of the vif.
1383                  * Flush them here.
1384                  */
1385                 mutex_lock(&mvm->mutex);
1386                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1387                 mutex_unlock(&mvm->mutex);
1388
1389                 /*
1390                  * There are transports that buffer a few frames in the host.
1391                  * For these, the flush above isn't enough since while we were
1392                  * flushing, the transport might have sent more frames to the
1393                  * device. To solve this, wait here until the transport is
1394                  * empty. Technically, this could have replaced the flush
1395                  * above, but flush is much faster than draining. So flush
1396                  * first, and drain to make sure we have no frames in the
1397                  * transport anymore.
1398                  * If a station still had frames on the shared queues, it is
1399                  * already marked as draining, so to complete the draining, we
1400                  * just need to wait until the transport is empty.
1401                  */
1402                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1403         }
1404
1405         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1406                 /*
1407                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1408                  * We assume here that all the packets sent to the OFFCHANNEL
1409                  * queue are sent in ROC session.
1410                  */
1411                 flush_work(&mvm->roc_done_wk);
1412         } else {
1413                 /*
1414                  * By now, all the AC queues are empty. The AGG queues are
1415                  * empty too. We already got all the Tx responses for all the
1416                  * packets in the queues. The drain work can have been
1417                  * triggered. Flush it.
1418                  */
1419                 flush_work(&mvm->sta_drained_wk);
1420         }
1421 }
1422
1423 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1424                                          struct ieee80211_vif *vif)
1425 {
1426         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1427         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1428
1429         iwl_mvm_prepare_mac_removal(mvm, vif);
1430
1431         mutex_lock(&mvm->mutex);
1432
1433         if (mvm->bf_allowed_vif == mvmvif) {
1434                 mvm->bf_allowed_vif = NULL;
1435                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1436                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1437         }
1438
1439         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1440
1441         /*
1442          * For AP/GO interface, the tear down of the resources allocated to the
1443          * interface is be handled as part of the stop_ap flow.
1444          */
1445         if (vif->type == NL80211_IFTYPE_AP ||
1446             vif->type == NL80211_IFTYPE_ADHOC) {
1447 #ifdef CONFIG_NL80211_TESTMODE
1448                 if (vif == mvm->noa_vif) {
1449                         mvm->noa_vif = NULL;
1450                         mvm->noa_duration = 0;
1451                 }
1452 #endif
1453                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1454                 goto out_release;
1455         }
1456
1457         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1458                 mvm->p2p_device_vif = NULL;
1459                 iwl_mvm_rm_bcast_sta(mvm, vif);
1460                 iwl_mvm_binding_remove_vif(mvm, vif);
1461                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1462                 mvmvif->phy_ctxt = NULL;
1463         }
1464
1465         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1466                 mvm->vif_count--;
1467
1468         iwl_mvm_power_update_mac(mvm);
1469         iwl_mvm_mac_ctxt_remove(mvm, vif);
1470
1471 out_release:
1472         iwl_mvm_mac_ctxt_release(mvm, vif);
1473         mutex_unlock(&mvm->mutex);
1474 }
1475
1476 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1477 {
1478         return 0;
1479 }
1480
1481 struct iwl_mvm_mc_iter_data {
1482         struct iwl_mvm *mvm;
1483         int port_id;
1484 };
1485
1486 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1487                                       struct ieee80211_vif *vif)
1488 {
1489         struct iwl_mvm_mc_iter_data *data = _data;
1490         struct iwl_mvm *mvm = data->mvm;
1491         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1492         int ret, len;
1493
1494         /* if we don't have free ports, mcast frames will be dropped */
1495         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1496                 return;
1497
1498         if (vif->type != NL80211_IFTYPE_STATION ||
1499             !vif->bss_conf.assoc)
1500                 return;
1501
1502         cmd->port_id = data->port_id++;
1503         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1504         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1505
1506         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1507         if (ret)
1508                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1509 }
1510
1511 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1512 {
1513         struct iwl_mvm_mc_iter_data iter_data = {
1514                 .mvm = mvm,
1515         };
1516
1517         lockdep_assert_held(&mvm->mutex);
1518
1519         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1520                 return;
1521
1522         ieee80211_iterate_active_interfaces_atomic(
1523                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1524                 iwl_mvm_mc_iface_iterator, &iter_data);
1525 }
1526
1527 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1528                                      struct netdev_hw_addr_list *mc_list)
1529 {
1530         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1531         struct iwl_mcast_filter_cmd *cmd;
1532         struct netdev_hw_addr *addr;
1533         int addr_count;
1534         bool pass_all;
1535         int len;
1536
1537         addr_count = netdev_hw_addr_list_count(mc_list);
1538         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1539                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1540         if (pass_all)
1541                 addr_count = 0;
1542
1543         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1544         cmd = kzalloc(len, GFP_ATOMIC);
1545         if (!cmd)
1546                 return 0;
1547
1548         if (pass_all) {
1549                 cmd->pass_all = 1;
1550                 return (u64)(unsigned long)cmd;
1551         }
1552
1553         netdev_hw_addr_list_for_each(addr, mc_list) {
1554                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1555                                    cmd->count, addr->addr);
1556                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1557                        addr->addr, ETH_ALEN);
1558                 cmd->count++;
1559         }
1560
1561         return (u64)(unsigned long)cmd;
1562 }
1563
1564 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1565                                      unsigned int changed_flags,
1566                                      unsigned int *total_flags,
1567                                      u64 multicast)
1568 {
1569         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1570         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1571
1572         mutex_lock(&mvm->mutex);
1573
1574         /* replace previous configuration */
1575         kfree(mvm->mcast_filter_cmd);
1576         mvm->mcast_filter_cmd = cmd;
1577
1578         if (!cmd)
1579                 goto out;
1580
1581         iwl_mvm_recalc_multicast(mvm);
1582 out:
1583         mutex_unlock(&mvm->mutex);
1584         *total_flags = 0;
1585 }
1586
1587 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1588                                         struct ieee80211_vif *vif,
1589                                         unsigned int filter_flags,
1590                                         unsigned int changed_flags)
1591 {
1592         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1593
1594         /* We support only filter for probe requests */
1595         if (!(changed_flags & FIF_PROBE_REQ))
1596                 return;
1597
1598         /* Supported only for p2p client interfaces */
1599         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1600             !vif->p2p)
1601                 return;
1602
1603         mutex_lock(&mvm->mutex);
1604         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1605         mutex_unlock(&mvm->mutex);
1606 }
1607
1608 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1609 struct iwl_bcast_iter_data {
1610         struct iwl_mvm *mvm;
1611         struct iwl_bcast_filter_cmd *cmd;
1612         u8 current_filter;
1613 };
1614
1615 static void
1616 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1617                          const struct iwl_fw_bcast_filter *in_filter,
1618                          struct iwl_fw_bcast_filter *out_filter)
1619 {
1620         struct iwl_fw_bcast_filter_attr *attr;
1621         int i;
1622
1623         memcpy(out_filter, in_filter, sizeof(*out_filter));
1624
1625         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1626                 attr = &out_filter->attrs[i];
1627
1628                 if (!attr->mask)
1629                         break;
1630
1631                 switch (attr->reserved1) {
1632                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1633                         if (vif->bss_conf.arp_addr_cnt != 1) {
1634                                 attr->mask = 0;
1635                                 continue;
1636                         }
1637
1638                         attr->val = vif->bss_conf.arp_addr_list[0];
1639                         break;
1640                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1641                         attr->val = *(__be32 *)&vif->addr[2];
1642                         break;
1643                 default:
1644                         break;
1645                 }
1646                 attr->reserved1 = 0;
1647                 out_filter->num_attrs++;
1648         }
1649 }
1650
1651 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1652                                           struct ieee80211_vif *vif)
1653 {
1654         struct iwl_bcast_iter_data *data = _data;
1655         struct iwl_mvm *mvm = data->mvm;
1656         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1657         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1658         struct iwl_fw_bcast_mac *bcast_mac;
1659         int i;
1660
1661         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1662                 return;
1663
1664         bcast_mac = &cmd->macs[mvmvif->id];
1665
1666         /*
1667          * enable filtering only for associated stations, but not for P2P
1668          * Clients
1669          */
1670         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1671             !vif->bss_conf.assoc)
1672                 return;
1673
1674         bcast_mac->default_discard = 1;
1675
1676         /* copy all configured filters */
1677         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1678                 /*
1679                  * Make sure we don't exceed our filters limit.
1680                  * if there is still a valid filter to be configured,
1681                  * be on the safe side and just allow bcast for this mac.
1682                  */
1683                 if (WARN_ON_ONCE(data->current_filter >=
1684                                  ARRAY_SIZE(cmd->filters))) {
1685                         bcast_mac->default_discard = 0;
1686                         bcast_mac->attached_filters = 0;
1687                         break;
1688                 }
1689
1690                 iwl_mvm_set_bcast_filter(vif,
1691                                          &mvm->bcast_filters[i],
1692                                          &cmd->filters[data->current_filter]);
1693
1694                 /* skip current filter if it contains no attributes */
1695                 if (!cmd->filters[data->current_filter].num_attrs)
1696                         continue;
1697
1698                 /* attach the filter to current mac */
1699                 bcast_mac->attached_filters |=
1700                                 cpu_to_le16(BIT(data->current_filter));
1701
1702                 data->current_filter++;
1703         }
1704 }
1705
1706 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1707                                     struct iwl_bcast_filter_cmd *cmd)
1708 {
1709         struct iwl_bcast_iter_data iter_data = {
1710                 .mvm = mvm,
1711                 .cmd = cmd,
1712         };
1713
1714         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1715                 return false;
1716
1717         memset(cmd, 0, sizeof(*cmd));
1718         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1719         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1720
1721 #ifdef CONFIG_IWLWIFI_DEBUGFS
1722         /* use debugfs filters/macs if override is configured */
1723         if (mvm->dbgfs_bcast_filtering.override) {
1724                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1725                        sizeof(cmd->filters));
1726                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1727                        sizeof(cmd->macs));
1728                 return true;
1729         }
1730 #endif
1731
1732         /* if no filters are configured, do nothing */
1733         if (!mvm->bcast_filters)
1734                 return false;
1735
1736         /* configure and attach these filters for each associated sta vif */
1737         ieee80211_iterate_active_interfaces(
1738                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1739                 iwl_mvm_bcast_filter_iterator, &iter_data);
1740
1741         return true;
1742 }
1743
1744 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1745 {
1746         struct iwl_bcast_filter_cmd cmd;
1747
1748         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1749                 return 0;
1750
1751         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1752                 return 0;
1753
1754         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1755                                     sizeof(cmd), &cmd);
1756 }
1757 #else
1758 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1759 {
1760         return 0;
1761 }
1762 #endif
1763
1764 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1765                                     struct ieee80211_vif *vif)
1766 {
1767         struct iwl_mu_group_mgmt_cmd cmd = {};
1768
1769         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1770                WLAN_MEMBERSHIP_LEN);
1771         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1772                WLAN_USER_POSITION_LEN);
1773
1774         return iwl_mvm_send_cmd_pdu(mvm,
1775                                     WIDE_ID(DATA_PATH_GROUP,
1776                                             UPDATE_MU_GROUPS_CMD),
1777                                     0, sizeof(cmd), &cmd);
1778 }
1779
1780 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1781                                            struct ieee80211_vif *vif)
1782 {
1783         if (vif->mu_mimo_owner) {
1784                 struct iwl_mu_group_mgmt_notif *notif = _data;
1785
1786                 /*
1787                  * MU-MIMO Group Id action frame is little endian. We treat
1788                  * the data received from firmware as if it came from the
1789                  * action frame, so no conversion is needed.
1790                  */
1791                 ieee80211_update_mu_groups(vif,
1792                                            (u8 *)&notif->membership_status,
1793                                            (u8 *)&notif->user_position);
1794         }
1795 }
1796
1797 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1798                                struct iwl_rx_cmd_buffer *rxb)
1799 {
1800         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1801         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1802
1803         ieee80211_iterate_active_interfaces_atomic(
1804                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1805                         iwl_mvm_mu_mimo_iface_iterator, notif);
1806 }
1807
1808 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1809                                              struct ieee80211_vif *vif,
1810                                              struct ieee80211_bss_conf *bss_conf,
1811                                              u32 changes)
1812 {
1813         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1814         int ret;
1815
1816         /*
1817          * Re-calculate the tsf id, as the master-slave relations depend on the
1818          * beacon interval, which was not known when the station interface was
1819          * added.
1820          */
1821         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1822                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1823
1824         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1825             mvmvif->lqm_active)
1826                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1827                                      0, 0);
1828
1829         /*
1830          * If we're not associated yet, take the (new) BSSID before associating
1831          * so the firmware knows. If we're already associated, then use the old
1832          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1833          * branch for disassociation below.
1834          */
1835         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1836                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1837
1838         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1839         if (ret)
1840                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1841
1842         /* after sending it once, adopt mac80211 data */
1843         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1844         mvmvif->associated = bss_conf->assoc;
1845
1846         if (changes & BSS_CHANGED_ASSOC) {
1847                 if (bss_conf->assoc) {
1848                         /* clear statistics to get clean beacon counter */
1849                         iwl_mvm_request_statistics(mvm, true);
1850                         memset(&mvmvif->beacon_stats, 0,
1851                                sizeof(mvmvif->beacon_stats));
1852
1853                         /* add quota for this interface */
1854                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1855                         if (ret) {
1856                                 IWL_ERR(mvm, "failed to update quotas\n");
1857                                 return;
1858                         }
1859
1860                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1861                                      &mvm->status)) {
1862                                 /*
1863                                  * If we're restarting then the firmware will
1864                                  * obviously have lost synchronisation with
1865                                  * the AP. It will attempt to synchronise by
1866                                  * itself, but we can make it more reliable by
1867                                  * scheduling a session protection time event.
1868                                  *
1869                                  * The firmware needs to receive a beacon to
1870                                  * catch up with synchronisation, use 110% of
1871                                  * the beacon interval.
1872                                  *
1873                                  * Set a large maximum delay to allow for more
1874                                  * than a single interface.
1875                                  */
1876                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1877                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1878                                                         5 * dur, false);
1879                         }
1880
1881                         iwl_mvm_sf_update(mvm, vif, false);
1882                         iwl_mvm_power_vif_assoc(mvm, vif);
1883                         if (vif->p2p) {
1884                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1885                                 iwl_mvm_update_smps(mvm, vif,
1886                                                     IWL_MVM_SMPS_REQ_PROT,
1887                                                     IEEE80211_SMPS_DYNAMIC);
1888                         }
1889                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1890                         /*
1891                          * If update fails - SF might be running in associated
1892                          * mode while disassociated - which is forbidden.
1893                          */
1894                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1895                                   "Failed to update SF upon disassociation\n");
1896
1897                         /* remove AP station now that the MAC is unassoc */
1898                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1899                         if (ret)
1900                                 IWL_ERR(mvm, "failed to remove AP station\n");
1901
1902                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1903                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1904                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1905                         /* remove quota for this interface */
1906                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1907                         if (ret)
1908                                 IWL_ERR(mvm, "failed to update quotas\n");
1909
1910                         if (vif->p2p)
1911                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1912
1913                         /* this will take the cleared BSSID from bss_conf */
1914                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1915                         if (ret)
1916                                 IWL_ERR(mvm,
1917                                         "failed to update MAC %pM (clear after unassoc)\n",
1918                                         vif->addr);
1919                 }
1920
1921                 /*
1922                  * The firmware tracks the MU-MIMO group on its own.
1923                  * However, on HW restart we should restore this data.
1924                  */
1925                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1926                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1927                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1928                         if (ret)
1929                                 IWL_ERR(mvm,
1930                                         "failed to update VHT MU_MIMO groups\n");
1931                 }
1932
1933                 iwl_mvm_recalc_multicast(mvm);
1934                 iwl_mvm_configure_bcast_filter(mvm);
1935
1936                 /* reset rssi values */
1937                 mvmvif->bf_data.ave_beacon_signal = 0;
1938
1939                 iwl_mvm_bt_coex_vif_change(mvm);
1940                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1941                                     IEEE80211_SMPS_AUTOMATIC);
1942                 if (fw_has_capa(&mvm->fw->ucode_capa,
1943                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1944                         iwl_mvm_config_scan(mvm);
1945         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1946                 /*
1947                  * We received a beacon _after_ association so
1948                  * remove the session protection.
1949                  */
1950                 iwl_mvm_remove_time_event(mvm, mvmvif,
1951                                           &mvmvif->time_event_data);
1952         }
1953
1954         if (changes & BSS_CHANGED_BEACON_INFO) {
1955                 iwl_mvm_sf_update(mvm, vif, false);
1956                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1957         }
1958
1959         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1960                        /*
1961                         * Send power command on every beacon change,
1962                         * because we may have not enabled beacon abort yet.
1963                         */
1964                        BSS_CHANGED_BEACON_INFO)) {
1965                 ret = iwl_mvm_power_update_mac(mvm);
1966                 if (ret)
1967                         IWL_ERR(mvm, "failed to update power mode\n");
1968         }
1969
1970         if (changes & BSS_CHANGED_TXPOWER) {
1971                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1972                                 bss_conf->txpower);
1973                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1974         }
1975
1976         if (changes & BSS_CHANGED_CQM) {
1977                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1978                 /* reset cqm events tracking */
1979                 mvmvif->bf_data.last_cqm_event = 0;
1980                 if (mvmvif->bf_data.bf_enabled) {
1981                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1982                         if (ret)
1983                                 IWL_ERR(mvm,
1984                                         "failed to update CQM thresholds\n");
1985                 }
1986         }
1987
1988         if (changes & BSS_CHANGED_ARP_FILTER) {
1989                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1990                 iwl_mvm_configure_bcast_filter(mvm);
1991         }
1992 }
1993
1994 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1995                                  struct ieee80211_vif *vif)
1996 {
1997         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1998         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1999         int ret;
2000
2001         /*
2002          * iwl_mvm_mac_ctxt_add() might read directly from the device
2003          * (the system time), so make sure it is available.
2004          */
2005         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2006         if (ret)
2007                 return ret;
2008
2009         mutex_lock(&mvm->mutex);
2010
2011         /* Send the beacon template */
2012         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2013         if (ret)
2014                 goto out_unlock;
2015
2016         /*
2017          * Re-calculate the tsf id, as the master-slave relations depend on the
2018          * beacon interval, which was not known when the AP interface was added.
2019          */
2020         if (vif->type == NL80211_IFTYPE_AP)
2021                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2022
2023         mvmvif->ap_assoc_sta_count = 0;
2024
2025         /* Add the mac context */
2026         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2027         if (ret)
2028                 goto out_unlock;
2029
2030         /* Perform the binding */
2031         ret = iwl_mvm_binding_add_vif(mvm, vif);
2032         if (ret)
2033                 goto out_remove;
2034
2035         /* Send the bcast station. At this stage the TBTT and DTIM time events
2036          * are added and applied to the scheduler */
2037         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2038         if (ret)
2039                 goto out_unbind;
2040
2041         /* must be set before quota calculations */
2042         mvmvif->ap_ibss_active = true;
2043
2044         /* power updated needs to be done before quotas */
2045         iwl_mvm_power_update_mac(mvm);
2046
2047         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2048         if (ret)
2049                 goto out_quota_failed;
2050
2051         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2052         if (vif->p2p && mvm->p2p_device_vif)
2053                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2054
2055         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2056
2057         iwl_mvm_bt_coex_vif_change(mvm);
2058
2059         /* we don't support TDLS during DCM */
2060         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2061                 iwl_mvm_teardown_tdls_peers(mvm);
2062
2063         goto out_unlock;
2064
2065 out_quota_failed:
2066         iwl_mvm_power_update_mac(mvm);
2067         mvmvif->ap_ibss_active = false;
2068         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2069 out_unbind:
2070         iwl_mvm_binding_remove_vif(mvm, vif);
2071 out_remove:
2072         iwl_mvm_mac_ctxt_remove(mvm, vif);
2073 out_unlock:
2074         mutex_unlock(&mvm->mutex);
2075         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2076         return ret;
2077 }
2078
2079 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2080                                  struct ieee80211_vif *vif)
2081 {
2082         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2083         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2084
2085         iwl_mvm_prepare_mac_removal(mvm, vif);
2086
2087         mutex_lock(&mvm->mutex);
2088
2089         /* Handle AP stop while in CSA */
2090         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2091                 iwl_mvm_remove_time_event(mvm, mvmvif,
2092                                           &mvmvif->time_event_data);
2093                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2094                 mvmvif->csa_countdown = false;
2095         }
2096
2097         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2098                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2099                 mvm->csa_tx_block_bcn_timeout = 0;
2100         }
2101
2102         mvmvif->ap_ibss_active = false;
2103         mvm->ap_last_beacon_gp2 = 0;
2104
2105         iwl_mvm_bt_coex_vif_change(mvm);
2106
2107         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2108
2109         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2110         if (vif->p2p && mvm->p2p_device_vif)
2111                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2112
2113         iwl_mvm_update_quotas(mvm, false, NULL);
2114         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2115         iwl_mvm_binding_remove_vif(mvm, vif);
2116
2117         iwl_mvm_power_update_mac(mvm);
2118
2119         iwl_mvm_mac_ctxt_remove(mvm, vif);
2120
2121         mutex_unlock(&mvm->mutex);
2122 }
2123
2124 static void
2125 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2126                                  struct ieee80211_vif *vif,
2127                                  struct ieee80211_bss_conf *bss_conf,
2128                                  u32 changes)
2129 {
2130         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2131
2132         /* Changes will be applied when the AP/IBSS is started */
2133         if (!mvmvif->ap_ibss_active)
2134                 return;
2135
2136         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2137                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2138             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2139                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2140
2141         /* Need to send a new beacon template to the FW */
2142         if (changes & BSS_CHANGED_BEACON &&
2143             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2144                 IWL_WARN(mvm, "Failed updating beacon data\n");
2145
2146         if (changes & BSS_CHANGED_TXPOWER) {
2147                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2148                                 bss_conf->txpower);
2149                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2150         }
2151 }
2152
2153 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2154                                      struct ieee80211_vif *vif,
2155                                      struct ieee80211_bss_conf *bss_conf,
2156                                      u32 changes)
2157 {
2158         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2159
2160         /*
2161          * iwl_mvm_bss_info_changed_station() might call
2162          * iwl_mvm_protect_session(), which reads directly from
2163          * the device (the system time), so make sure it is available.
2164          */
2165         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2166                 return;
2167
2168         mutex_lock(&mvm->mutex);
2169
2170         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2171                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2172
2173         switch (vif->type) {
2174         case NL80211_IFTYPE_STATION:
2175                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2176                 break;
2177         case NL80211_IFTYPE_AP:
2178         case NL80211_IFTYPE_ADHOC:
2179                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2180                 break;
2181         default:
2182                 /* shouldn't happen */
2183                 WARN_ON_ONCE(1);
2184         }
2185
2186         mutex_unlock(&mvm->mutex);
2187         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2188 }
2189
2190 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2191                                struct ieee80211_vif *vif,
2192                                struct ieee80211_scan_request *hw_req)
2193 {
2194         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2195         int ret;
2196
2197         if (hw_req->req.n_channels == 0 ||
2198             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2199                 return -EINVAL;
2200
2201         mutex_lock(&mvm->mutex);
2202         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2203         mutex_unlock(&mvm->mutex);
2204
2205         return ret;
2206 }
2207
2208 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2209                                        struct ieee80211_vif *vif)
2210 {
2211         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2212
2213         mutex_lock(&mvm->mutex);
2214
2215         /* Due to a race condition, it's possible that mac80211 asks
2216          * us to stop a hw_scan when it's already stopped.  This can
2217          * happen, for instance, if we stopped the scan ourselves,
2218          * called ieee80211_scan_completed() and the userspace called
2219          * cancel scan scan before ieee80211_scan_work() could run.
2220          * To handle that, simply return if the scan is not running.
2221         */
2222         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2223                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2224
2225         mutex_unlock(&mvm->mutex);
2226 }
2227
2228 static void
2229 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2230                                   struct ieee80211_sta *sta, u16 tids,
2231                                   int num_frames,
2232                                   enum ieee80211_frame_release_type reason,
2233                                   bool more_data)
2234 {
2235         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2236
2237         /* Called when we need to transmit (a) frame(s) from mac80211 */
2238
2239         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2240                                           tids, more_data, false);
2241 }
2242
2243 static void
2244 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2245                                     struct ieee80211_sta *sta, u16 tids,
2246                                     int num_frames,
2247                                     enum ieee80211_frame_release_type reason,
2248                                     bool more_data)
2249 {
2250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2251
2252         /* Called when we need to transmit (a) frame(s) from agg queue */
2253
2254         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2255                                           tids, more_data, true);
2256 }
2257
2258 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2259                                    struct ieee80211_vif *vif,
2260                                    enum sta_notify_cmd cmd,
2261                                    struct ieee80211_sta *sta)
2262 {
2263         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2264         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2265         unsigned long txqs = 0, tids = 0;
2266         int tid;
2267
2268         spin_lock_bh(&mvmsta->lock);
2269         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2270                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2271
2272                 if (tid_data->state != IWL_AGG_ON &&
2273                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2274                         continue;
2275
2276                 __set_bit(tid_data->txq_id, &txqs);
2277
2278                 if (iwl_mvm_tid_queued(tid_data) == 0)
2279                         continue;
2280
2281                 __set_bit(tid, &tids);
2282         }
2283
2284         switch (cmd) {
2285         case STA_NOTIFY_SLEEP:
2286                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2287                         ieee80211_sta_block_awake(hw, sta, true);
2288
2289                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2290                         ieee80211_sta_set_buffered(sta, tid, true);
2291
2292                 if (txqs)
2293                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2294                 /*
2295                  * The fw updates the STA to be asleep. Tx packets on the Tx
2296                  * queues to this station will not be transmitted. The fw will
2297                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2298                  */
2299                 break;
2300         case STA_NOTIFY_AWAKE:
2301                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2302                         break;
2303
2304                 if (txqs)
2305                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2306                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2307                 break;
2308         default:
2309                 break;
2310         }
2311         spin_unlock_bh(&mvmsta->lock);
2312 }
2313
2314 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2315                                        struct ieee80211_vif *vif,
2316                                        struct ieee80211_sta *sta)
2317 {
2318         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2319         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2320
2321         /*
2322          * This is called before mac80211 does RCU synchronisation,
2323          * so here we already invalidate our internal RCU-protected
2324          * station pointer. The rest of the code will thus no longer
2325          * be able to find the station this way, and we don't rely
2326          * on further RCU synchronisation after the sta_state()
2327          * callback deleted the station.
2328          */
2329         mutex_lock(&mvm->mutex);
2330         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2331                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2332                                    ERR_PTR(-ENOENT));
2333
2334         mutex_unlock(&mvm->mutex);
2335 }
2336
2337 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2338                                 const u8 *bssid)
2339 {
2340         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2341                 return;
2342
2343         if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2344                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2345                 return;
2346         }
2347
2348         if (iwlwifi_mod_params.uapsd_disable) {
2349                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2350                 return;
2351         }
2352
2353         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2354 }
2355
2356 static void
2357 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2358                            struct ieee80211_vif *vif, u8 *peer_addr,
2359                            enum nl80211_tdls_operation action)
2360 {
2361         struct iwl_fw_dbg_trigger_tlv *trig;
2362         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2363
2364         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2365                 return;
2366
2367         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2368         tdls_trig = (void *)trig->data;
2369         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2370                 return;
2371
2372         if (!(tdls_trig->action_bitmap & BIT(action)))
2373                 return;
2374
2375         if (tdls_trig->peer_mode &&
2376             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2377                 return;
2378
2379         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2380                                     "TDLS event occurred, peer %pM, action %d",
2381                                     peer_addr, action);
2382 }
2383
2384 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2385                                  struct ieee80211_vif *vif,
2386                                  struct ieee80211_sta *sta,
2387                                  enum ieee80211_sta_state old_state,
2388                                  enum ieee80211_sta_state new_state)
2389 {
2390         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2391         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2392         int ret;
2393
2394         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2395                            sta->addr, old_state, new_state);
2396
2397         /* this would be a mac80211 bug ... but don't crash */
2398         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2399                 return -EINVAL;
2400
2401         /* if a STA is being removed, reuse its ID */
2402         flush_work(&mvm->sta_drained_wk);
2403
2404         mutex_lock(&mvm->mutex);
2405         if (old_state == IEEE80211_STA_NOTEXIST &&
2406             new_state == IEEE80211_STA_NONE) {
2407                 /*
2408                  * Firmware bug - it'll crash if the beacon interval is less
2409                  * than 16. We can't avoid connecting at all, so refuse the
2410                  * station state change, this will cause mac80211 to abandon
2411                  * attempts to connect to this AP, and eventually wpa_s will
2412                  * blacklist the AP...
2413                  */
2414                 if (vif->type == NL80211_IFTYPE_STATION &&
2415                     vif->bss_conf.beacon_int < 16) {
2416                         IWL_ERR(mvm,
2417                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2418                                 sta->addr, vif->bss_conf.beacon_int);
2419                         ret = -EINVAL;
2420                         goto out_unlock;
2421                 }
2422
2423                 if (sta->tdls &&
2424                     (vif->p2p ||
2425                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2426                                                 IWL_MVM_TDLS_STA_COUNT ||
2427                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2428                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2429                         ret = -EBUSY;
2430                         goto out_unlock;
2431                 }
2432
2433                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2434                 if (sta->tdls && ret == 0) {
2435                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2436                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2437                                                    NL80211_TDLS_SETUP);
2438                 }
2439         } else if (old_state == IEEE80211_STA_NONE &&
2440                    new_state == IEEE80211_STA_AUTH) {
2441                 /*
2442                  * EBS may be disabled due to previous failures reported by FW.
2443                  * Reset EBS status here assuming environment has been changed.
2444                  */
2445                 mvm->last_ebs_successful = true;
2446                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2447                 ret = 0;
2448         } else if (old_state == IEEE80211_STA_AUTH &&
2449                    new_state == IEEE80211_STA_ASSOC) {
2450                 if (vif->type == NL80211_IFTYPE_AP) {
2451                         mvmvif->ap_assoc_sta_count++;
2452                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2453                 }
2454                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2455                 if (ret == 0)
2456                         iwl_mvm_rs_rate_init(mvm, sta,
2457                                              mvmvif->phy_ctxt->channel->band,
2458                                              true);
2459         } else if (old_state == IEEE80211_STA_ASSOC &&
2460                    new_state == IEEE80211_STA_AUTHORIZED) {
2461
2462                 /* we don't support TDLS during DCM */
2463                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2464                         iwl_mvm_teardown_tdls_peers(mvm);
2465
2466                 if (sta->tdls)
2467                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2468                                                    NL80211_TDLS_ENABLE_LINK);
2469
2470                 /* enable beacon filtering */
2471                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2472                 ret = 0;
2473         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2474                    new_state == IEEE80211_STA_ASSOC) {
2475                 /* disable beacon filtering */
2476                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2477                 ret = 0;
2478         } else if (old_state == IEEE80211_STA_ASSOC &&
2479                    new_state == IEEE80211_STA_AUTH) {
2480                 if (vif->type == NL80211_IFTYPE_AP) {
2481                         mvmvif->ap_assoc_sta_count--;
2482                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2483                 }
2484                 ret = 0;
2485         } else if (old_state == IEEE80211_STA_AUTH &&
2486                    new_state == IEEE80211_STA_NONE) {
2487                 ret = 0;
2488         } else if (old_state == IEEE80211_STA_NONE &&
2489                    new_state == IEEE80211_STA_NOTEXIST) {
2490                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2491                 if (sta->tdls) {
2492                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2493                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2494                                                    NL80211_TDLS_DISABLE_LINK);
2495                 }
2496         } else {
2497                 ret = -EIO;
2498         }
2499  out_unlock:
2500         mutex_unlock(&mvm->mutex);
2501
2502         if (sta->tdls && ret == 0) {
2503                 if (old_state == IEEE80211_STA_NOTEXIST &&
2504                     new_state == IEEE80211_STA_NONE)
2505                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2506                 else if (old_state == IEEE80211_STA_NONE &&
2507                          new_state == IEEE80211_STA_NOTEXIST)
2508                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2509         }
2510
2511         return ret;
2512 }
2513
2514 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2515 {
2516         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2517
2518         mvm->rts_threshold = value;
2519
2520         return 0;
2521 }
2522
2523 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2524                                   struct ieee80211_vif *vif,
2525                                   struct ieee80211_sta *sta, u32 changed)
2526 {
2527         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2528
2529         if (vif->type == NL80211_IFTYPE_STATION &&
2530             changed & IEEE80211_RC_NSS_CHANGED)
2531                 iwl_mvm_sf_update(mvm, vif, false);
2532 }
2533
2534 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2535                                struct ieee80211_vif *vif, u16 ac,
2536                                const struct ieee80211_tx_queue_params *params)
2537 {
2538         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2539         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2540
2541         mvmvif->queue_params[ac] = *params;
2542
2543         /*
2544          * No need to update right away, we'll get BSS_CHANGED_QOS
2545          * The exception is P2P_DEVICE interface which needs immediate update.
2546          */
2547         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2548                 int ret;
2549
2550                 mutex_lock(&mvm->mutex);
2551                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2552                 mutex_unlock(&mvm->mutex);
2553                 return ret;
2554         }
2555         return 0;
2556 }
2557
2558 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2559                                       struct ieee80211_vif *vif)
2560 {
2561         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2563         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2564
2565         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2566                 return;
2567
2568         /*
2569          * iwl_mvm_protect_session() reads directly from the device
2570          * (the system time), so make sure it is available.
2571          */
2572         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2573                 return;
2574
2575         mutex_lock(&mvm->mutex);
2576         /* Try really hard to protect the session and hear a beacon */
2577         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2578         mutex_unlock(&mvm->mutex);
2579
2580         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2581 }
2582
2583 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2584                                         struct ieee80211_vif *vif,
2585                                         struct cfg80211_sched_scan_request *req,
2586                                         struct ieee80211_scan_ies *ies)
2587 {
2588         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2589
2590         int ret;
2591
2592         mutex_lock(&mvm->mutex);
2593
2594         if (!vif->bss_conf.idle) {
2595                 ret = -EBUSY;
2596                 goto out;
2597         }
2598
2599         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2600
2601 out:
2602         mutex_unlock(&mvm->mutex);
2603         return ret;
2604 }
2605
2606 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2607                                        struct ieee80211_vif *vif)
2608 {
2609         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2610         int ret;
2611
2612         mutex_lock(&mvm->mutex);
2613
2614         /* Due to a race condition, it's possible that mac80211 asks
2615          * us to stop a sched_scan when it's already stopped.  This
2616          * can happen, for instance, if we stopped the scan ourselves,
2617          * called ieee80211_sched_scan_stopped() and the userspace called
2618          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2619          * could run.  To handle this, simply return if the scan is
2620          * not running.
2621         */
2622         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2623                 mutex_unlock(&mvm->mutex);
2624                 return 0;
2625         }
2626
2627         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2628         mutex_unlock(&mvm->mutex);
2629         iwl_mvm_wait_for_async_handlers(mvm);
2630
2631         return ret;
2632 }
2633
2634 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2635                                enum set_key_cmd cmd,
2636                                struct ieee80211_vif *vif,
2637                                struct ieee80211_sta *sta,
2638                                struct ieee80211_key_conf *key)
2639 {
2640         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2641         struct iwl_mvm_sta *mvmsta;
2642         struct iwl_mvm_key_pn *ptk_pn;
2643         int keyidx = key->keyidx;
2644         int ret;
2645         u8 key_offset;
2646
2647         if (iwlwifi_mod_params.sw_crypto) {
2648                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2649                 return -EOPNOTSUPP;
2650         }
2651
2652         switch (key->cipher) {
2653         case WLAN_CIPHER_SUITE_TKIP:
2654                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2655                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2656                 break;
2657         case WLAN_CIPHER_SUITE_CCMP:
2658                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2659                 break;
2660         case WLAN_CIPHER_SUITE_AES_CMAC:
2661                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2662                 break;
2663         case WLAN_CIPHER_SUITE_WEP40:
2664         case WLAN_CIPHER_SUITE_WEP104:
2665                 /* For non-client mode, only use WEP keys for TX as we probably
2666                  * don't have a station yet anyway and would then have to keep
2667                  * track of the keys, linking them to each of the clients/peers
2668                  * as they appear. For now, don't do that, for performance WEP
2669                  * offload doesn't really matter much, but we need it for some
2670                  * other offload features in client mode.
2671                  */
2672                 if (vif->type != NL80211_IFTYPE_STATION)
2673                         return 0;
2674                 break;
2675         default:
2676                 /* currently FW supports only one optional cipher scheme */
2677                 if (hw->n_cipher_schemes &&
2678                     hw->cipher_schemes->cipher == key->cipher)
2679                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2680                 else
2681                         return -EOPNOTSUPP;
2682         }
2683
2684         mutex_lock(&mvm->mutex);
2685
2686         switch (cmd) {
2687         case SET_KEY:
2688                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2689                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2690                         /*
2691                          * GTK on AP interface is a TX-only key, return 0;
2692                          * on IBSS they're per-station and because we're lazy
2693                          * we don't support them for RX, so do the same.
2694                          * CMAC in AP/IBSS modes must be done in software.
2695                          */
2696                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2697                                 ret = -EOPNOTSUPP;
2698                         else
2699                                 ret = 0;
2700                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2701                         break;
2702                 }
2703
2704                 /* During FW restart, in order to restore the state as it was,
2705                  * don't try to reprogram keys we previously failed for.
2706                  */
2707                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2708                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2709                         IWL_DEBUG_MAC80211(mvm,
2710                                            "skip invalid idx key programming during restart\n");
2711                         ret = 0;
2712                         break;
2713                 }
2714
2715                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2716                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2717                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2718                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2719                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2720                         struct ieee80211_key_seq seq;
2721                         int tid, q;
2722
2723                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2724                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2725                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2726                                          mvm->trans->num_rx_queues *
2727                                                 sizeof(ptk_pn->q[0]),
2728                                          GFP_KERNEL);
2729                         if (!ptk_pn) {
2730                                 ret = -ENOMEM;
2731                                 break;
2732                         }
2733
2734                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2735                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2736                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2737                                         memcpy(ptk_pn->q[q].pn[tid],
2738                                                seq.ccmp.pn,
2739                                                IEEE80211_CCMP_PN_LEN);
2740                         }
2741
2742                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2743                 }
2744
2745                 /* in HW restart reuse the index, otherwise request a new one */
2746                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2747                         key_offset = key->hw_key_idx;
2748                 else
2749                         key_offset = STA_KEY_IDX_INVALID;
2750
2751                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2752                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2753                 if (ret) {
2754                         IWL_WARN(mvm, "set key failed\n");
2755                         /*
2756                          * can't add key for RX, but we don't need it
2757                          * in the device for TX so still return 0
2758                          */
2759                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2760                         ret = 0;
2761                 }
2762
2763                 break;
2764         case DISABLE_KEY:
2765                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2766                         ret = 0;
2767                         break;
2768                 }
2769
2770                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2771                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2772                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2773                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2774                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2775                         ptk_pn = rcu_dereference_protected(
2776                                                 mvmsta->ptk_pn[keyidx],
2777                                                 lockdep_is_held(&mvm->mutex));
2778                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2779                         if (ptk_pn)
2780                                 kfree_rcu(ptk_pn, rcu_head);
2781                 }
2782
2783                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2784                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2785                 break;
2786         default:
2787                 ret = -EINVAL;
2788         }
2789
2790         mutex_unlock(&mvm->mutex);
2791         return ret;
2792 }
2793
2794 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2795                                         struct ieee80211_vif *vif,
2796                                         struct ieee80211_key_conf *keyconf,
2797                                         struct ieee80211_sta *sta,
2798                                         u32 iv32, u16 *phase1key)
2799 {
2800         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2801
2802         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2803                 return;
2804
2805         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2806 }
2807
2808
2809 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2810                                struct iwl_rx_packet *pkt, void *data)
2811 {
2812         struct iwl_mvm *mvm =
2813                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2814         struct iwl_hs20_roc_res *resp;
2815         int resp_len = iwl_rx_packet_payload_len(pkt);
2816         struct iwl_mvm_time_event_data *te_data = data;
2817
2818         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2819                 return true;
2820
2821         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2822                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2823                 return true;
2824         }
2825
2826         resp = (void *)pkt->data;
2827
2828         IWL_DEBUG_TE(mvm,
2829                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2830                      resp->status, resp->event_unique_id);
2831
2832         te_data->uid = le32_to_cpu(resp->event_unique_id);
2833         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2834                      te_data->uid);
2835
2836         spin_lock_bh(&mvm->time_event_lock);
2837         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2838         spin_unlock_bh(&mvm->time_event_lock);
2839
2840         return true;
2841 }
2842
2843 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2844 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2845 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2846 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2847 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2848 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2849                                     struct ieee80211_channel *channel,
2850                                     struct ieee80211_vif *vif,
2851                                     int duration)
2852 {
2853         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2854         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2855         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2856         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2857         struct iwl_notification_wait wait_time_event;
2858         u32 dtim_interval = vif->bss_conf.dtim_period *
2859                 vif->bss_conf.beacon_int;
2860         u32 req_dur, delay;
2861         struct iwl_hs20_roc_req aux_roc_req = {
2862                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2863                 .id_and_color =
2864                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2865                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2866                 /* Set the channel info data */
2867                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2868                         PHY_BAND_24 : PHY_BAND_5,
2869                 .channel_info.channel = channel->hw_value,
2870                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2871                 /* Set the time and duration */
2872                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2873          };
2874
2875         delay = AUX_ROC_MIN_DELAY;
2876         req_dur = MSEC_TO_TU(duration);
2877
2878         /*
2879          * If we are associated we want the delay time to be at least one
2880          * dtim interval so that the FW can wait until after the DTIM and
2881          * then start the time event, this will potentially allow us to
2882          * remain off-channel for the max duration.
2883          * Since we want to use almost a whole dtim interval we would also
2884          * like the delay to be for 2-3 dtim intervals, in case there are
2885          * other time events with higher priority.
2886          */
2887         if (vif->bss_conf.assoc) {
2888                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2889                 /* We cannot remain off-channel longer than the DTIM interval */
2890                 if (dtim_interval <= req_dur) {
2891                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2892                         if (req_dur <= AUX_ROC_MIN_DURATION)
2893                                 req_dur = dtim_interval -
2894                                         AUX_ROC_MIN_SAFETY_BUFFER;
2895                 }
2896         }
2897
2898         aux_roc_req.duration = cpu_to_le32(req_dur);
2899         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2900
2901         IWL_DEBUG_TE(mvm,
2902                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2903                      channel->hw_value, req_dur, duration, delay,
2904                      dtim_interval);
2905         /* Set the node address */
2906         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2907
2908         lockdep_assert_held(&mvm->mutex);
2909
2910         spin_lock_bh(&mvm->time_event_lock);
2911
2912         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2913                 spin_unlock_bh(&mvm->time_event_lock);
2914                 return -EIO;
2915         }
2916
2917         te_data->vif = vif;
2918         te_data->duration = duration;
2919         te_data->id = HOT_SPOT_CMD;
2920
2921         spin_unlock_bh(&mvm->time_event_lock);
2922
2923         /*
2924          * Use a notification wait, which really just processes the
2925          * command response and doesn't wait for anything, in order
2926          * to be able to process the response and get the UID inside
2927          * the RX path. Using CMD_WANT_SKB doesn't work because it
2928          * stores the buffer and then wakes up this thread, by which
2929          * time another notification (that the time event started)
2930          * might already be processed unsuccessfully.
2931          */
2932         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2933                                    time_event_response,
2934                                    ARRAY_SIZE(time_event_response),
2935                                    iwl_mvm_rx_aux_roc, te_data);
2936
2937         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2938                                    &aux_roc_req);
2939
2940         if (res) {
2941                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2942                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2943                 goto out_clear_te;
2944         }
2945
2946         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2947         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2948         /* should never fail */
2949         WARN_ON_ONCE(res);
2950
2951         if (res) {
2952  out_clear_te:
2953                 spin_lock_bh(&mvm->time_event_lock);
2954                 iwl_mvm_te_clear_data(mvm, te_data);
2955                 spin_unlock_bh(&mvm->time_event_lock);
2956         }
2957
2958         return res;
2959 }
2960
2961 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2962                        struct ieee80211_vif *vif,
2963                        struct ieee80211_channel *channel,
2964                        int duration,
2965                        enum ieee80211_roc_type type)
2966 {
2967         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2968         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2969         struct cfg80211_chan_def chandef;
2970         struct iwl_mvm_phy_ctxt *phy_ctxt;
2971         int ret, i;
2972
2973         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2974                            duration, type);
2975
2976         flush_work(&mvm->roc_done_wk);
2977
2978         mutex_lock(&mvm->mutex);
2979
2980         switch (vif->type) {
2981         case NL80211_IFTYPE_STATION:
2982                 if (fw_has_capa(&mvm->fw->ucode_capa,
2983                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2984                         /* Use aux roc framework (HS20) */
2985                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2986                                                        vif, duration);
2987                         goto out_unlock;
2988                 }
2989                 IWL_ERR(mvm, "hotspot not supported\n");
2990                 ret = -EINVAL;
2991                 goto out_unlock;
2992         case NL80211_IFTYPE_P2P_DEVICE:
2993                 /* handle below */
2994                 break;
2995         default:
2996                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2997                 ret = -EINVAL;
2998                 goto out_unlock;
2999         }
3000
3001         for (i = 0; i < NUM_PHY_CTX; i++) {
3002                 phy_ctxt = &mvm->phy_ctxts[i];
3003                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3004                         continue;
3005
3006                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3007                         /*
3008                          * Unbind the P2P_DEVICE from the current PHY context,
3009                          * and if the PHY context is not used remove it.
3010                          */
3011                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3012                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3013                                 goto out_unlock;
3014
3015                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3016
3017                         /* Bind the P2P_DEVICE to the current PHY Context */
3018                         mvmvif->phy_ctxt = phy_ctxt;
3019
3020                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3021                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3022                                 goto out_unlock;
3023
3024                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3025                         goto schedule_time_event;
3026                 }
3027         }
3028
3029         /* Need to update the PHY context only if the ROC channel changed */
3030         if (channel == mvmvif->phy_ctxt->channel)
3031                 goto schedule_time_event;
3032
3033         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3034
3035         /*
3036          * Change the PHY context configuration as it is currently referenced
3037          * only by the P2P Device MAC
3038          */
3039         if (mvmvif->phy_ctxt->ref == 1) {
3040                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3041                                                &chandef, 1, 1);
3042                 if (ret)
3043                         goto out_unlock;
3044         } else {
3045                 /*
3046                  * The PHY context is shared with other MACs. Need to remove the
3047                  * P2P Device from the binding, allocate an new PHY context and
3048                  * create a new binding
3049                  */
3050                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3051                 if (!phy_ctxt) {
3052                         ret = -ENOSPC;
3053                         goto out_unlock;
3054                 }
3055
3056                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3057                                                1, 1);
3058                 if (ret) {
3059                         IWL_ERR(mvm, "Failed to change PHY context\n");
3060                         goto out_unlock;
3061                 }
3062
3063                 /* Unbind the P2P_DEVICE from the current PHY context */
3064                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3065                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3066                         goto out_unlock;
3067
3068                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3069
3070                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3071                 mvmvif->phy_ctxt = phy_ctxt;
3072
3073                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3074                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3075                         goto out_unlock;
3076
3077                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3078         }
3079
3080 schedule_time_event:
3081         /* Schedule the time events */
3082         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3083
3084 out_unlock:
3085         mutex_unlock(&mvm->mutex);
3086         IWL_DEBUG_MAC80211(mvm, "leave\n");
3087         return ret;
3088 }
3089
3090 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3091 {
3092         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3093
3094         IWL_DEBUG_MAC80211(mvm, "enter\n");
3095
3096         mutex_lock(&mvm->mutex);
3097         iwl_mvm_stop_roc(mvm);
3098         mutex_unlock(&mvm->mutex);
3099
3100         IWL_DEBUG_MAC80211(mvm, "leave\n");
3101         return 0;
3102 }
3103
3104 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3105                                  struct ieee80211_chanctx_conf *ctx)
3106 {
3107         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3108         struct iwl_mvm_phy_ctxt *phy_ctxt;
3109         int ret;
3110
3111         lockdep_assert_held(&mvm->mutex);
3112
3113         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3114
3115         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3116         if (!phy_ctxt) {
3117                 ret = -ENOSPC;
3118                 goto out;
3119         }
3120
3121         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3122                                        ctx->rx_chains_static,
3123                                        ctx->rx_chains_dynamic);
3124         if (ret) {
3125                 IWL_ERR(mvm, "Failed to add PHY context\n");
3126                 goto out;
3127         }
3128
3129         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3130         *phy_ctxt_id = phy_ctxt->id;
3131 out:
3132         return ret;
3133 }
3134
3135 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3136                                struct ieee80211_chanctx_conf *ctx)
3137 {
3138         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3139         int ret;
3140
3141         mutex_lock(&mvm->mutex);
3142         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3143         mutex_unlock(&mvm->mutex);
3144
3145         return ret;
3146 }
3147
3148 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3149                                      struct ieee80211_chanctx_conf *ctx)
3150 {
3151         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3152         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3153
3154         lockdep_assert_held(&mvm->mutex);
3155
3156         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3157 }
3158
3159 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3160                                    struct ieee80211_chanctx_conf *ctx)
3161 {
3162         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3163
3164         mutex_lock(&mvm->mutex);
3165         __iwl_mvm_remove_chanctx(mvm, ctx);
3166         mutex_unlock(&mvm->mutex);
3167 }
3168
3169 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3170                                    struct ieee80211_chanctx_conf *ctx,
3171                                    u32 changed)
3172 {
3173         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3174         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3175         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3176
3177         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3178                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3179                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3180                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3181                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3182                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3183                       phy_ctxt->ref, changed))
3184                 return;
3185
3186         mutex_lock(&mvm->mutex);
3187         iwl_mvm_bt_coex_vif_change(mvm);
3188         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3189                                  ctx->rx_chains_static,
3190                                  ctx->rx_chains_dynamic);
3191         mutex_unlock(&mvm->mutex);
3192 }
3193
3194 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3195                                         struct ieee80211_vif *vif,
3196                                         struct ieee80211_chanctx_conf *ctx,
3197                                         bool switching_chanctx)
3198 {
3199         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3200         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3201         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3202         int ret;
3203
3204         lockdep_assert_held(&mvm->mutex);
3205
3206         mvmvif->phy_ctxt = phy_ctxt;
3207
3208         switch (vif->type) {
3209         case NL80211_IFTYPE_AP:
3210                 /* only needed if we're switching chanctx (i.e. during CSA) */
3211                 if (switching_chanctx) {
3212                         mvmvif->ap_ibss_active = true;
3213                         break;
3214                 }
3215         case NL80211_IFTYPE_ADHOC:
3216                 /*
3217                  * The AP binding flow is handled as part of the start_ap flow
3218                  * (in bss_info_changed), similarly for IBSS.
3219                  */
3220                 ret = 0;
3221                 goto out;
3222         case NL80211_IFTYPE_STATION:
3223                 break;
3224         case NL80211_IFTYPE_MONITOR:
3225                 /* always disable PS when a monitor interface is active */
3226                 mvmvif->ps_disabled = true;
3227                 break;
3228         default:
3229                 ret = -EINVAL;
3230                 goto out;
3231         }
3232
3233         ret = iwl_mvm_binding_add_vif(mvm, vif);
3234         if (ret)
3235                 goto out;
3236
3237         /*
3238          * Power state must be updated before quotas,
3239          * otherwise fw will complain.
3240          */
3241         iwl_mvm_power_update_mac(mvm);
3242
3243         /* Setting the quota at this stage is only required for monitor
3244          * interfaces. For the other types, the bss_info changed flow
3245          * will handle quota settings.
3246          */
3247         if (vif->type == NL80211_IFTYPE_MONITOR) {
3248                 mvmvif->monitor_active = true;
3249                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3250                 if (ret)
3251                         goto out_remove_binding;
3252
3253                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3254                 if (ret)
3255                         goto out_remove_binding;
3256
3257         }
3258
3259         /* Handle binding during CSA */
3260         if (vif->type == NL80211_IFTYPE_AP) {
3261                 iwl_mvm_update_quotas(mvm, false, NULL);
3262                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3263         }
3264
3265         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3266                 u32 duration = 2 * vif->bss_conf.beacon_int;
3267
3268                 /* iwl_mvm_protect_session() reads directly from the
3269                  * device (the system time), so make sure it is
3270                  * available.
3271                  */
3272                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3273                 if (ret)
3274                         goto out_remove_binding;
3275
3276                 /* Protect the session to make sure we hear the first
3277                  * beacon on the new channel.
3278                  */
3279                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3280                                         vif->bss_conf.beacon_int / 2,
3281                                         true);
3282
3283                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3284
3285                 iwl_mvm_update_quotas(mvm, false, NULL);
3286         }
3287
3288         goto out;
3289
3290 out_remove_binding:
3291         iwl_mvm_binding_remove_vif(mvm, vif);
3292         iwl_mvm_power_update_mac(mvm);
3293 out:
3294         if (ret)
3295                 mvmvif->phy_ctxt = NULL;
3296         return ret;
3297 }
3298 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3299                                       struct ieee80211_vif *vif,
3300                                       struct ieee80211_chanctx_conf *ctx)
3301 {
3302         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3303         int ret;
3304
3305         mutex_lock(&mvm->mutex);
3306         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3307         mutex_unlock(&mvm->mutex);
3308
3309         return ret;
3310 }
3311
3312 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3313                                            struct ieee80211_vif *vif,
3314                                            struct ieee80211_chanctx_conf *ctx,
3315                                            bool switching_chanctx)
3316 {
3317         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3318         struct ieee80211_vif *disabled_vif = NULL;
3319
3320         lockdep_assert_held(&mvm->mutex);
3321
3322         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3323
3324         switch (vif->type) {
3325         case NL80211_IFTYPE_ADHOC:
3326                 goto out;
3327         case NL80211_IFTYPE_MONITOR:
3328                 mvmvif->monitor_active = false;
3329                 mvmvif->ps_disabled = false;
3330                 iwl_mvm_rm_snif_sta(mvm, vif);
3331                 break;
3332         case NL80211_IFTYPE_AP:
3333                 /* This part is triggered only during CSA */
3334                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3335                         goto out;
3336
3337                 mvmvif->csa_countdown = false;
3338
3339                 /* Set CS bit on all the stations */
3340                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3341
3342                 /* Save blocked iface, the timeout is set on the next beacon */
3343                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3344
3345                 mvmvif->ap_ibss_active = false;
3346                 break;
3347         case NL80211_IFTYPE_STATION:
3348                 if (!switching_chanctx)
3349                         break;
3350
3351                 disabled_vif = vif;
3352
3353                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3354                 break;
3355         default:
3356                 break;
3357         }
3358
3359         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3360         iwl_mvm_binding_remove_vif(mvm, vif);
3361
3362 out:
3363         mvmvif->phy_ctxt = NULL;
3364         iwl_mvm_power_update_mac(mvm);
3365 }
3366
3367 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3368                                          struct ieee80211_vif *vif,
3369                                          struct ieee80211_chanctx_conf *ctx)
3370 {
3371         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3372
3373         mutex_lock(&mvm->mutex);
3374         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3375         mutex_unlock(&mvm->mutex);
3376 }
3377
3378 static int
3379 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3380                                 struct ieee80211_vif_chanctx_switch *vifs)
3381 {
3382         int ret;
3383
3384         mutex_lock(&mvm->mutex);
3385         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3386         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3387
3388         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3389         if (ret) {
3390                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3391                 goto out_reassign;
3392         }
3393
3394         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3395                                            true);
3396         if (ret) {
3397                 IWL_ERR(mvm,
3398                         "failed to assign new_ctx during channel switch\n");
3399                 goto out_remove;
3400         }
3401
3402         /* we don't support TDLS during DCM - can be caused by channel switch */
3403         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3404                 iwl_mvm_teardown_tdls_peers(mvm);
3405
3406         goto out;
3407
3408 out_remove:
3409         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3410
3411 out_reassign:
3412         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3413                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3414                 goto out_restart;
3415         }
3416
3417         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3418                                          true)) {
3419                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3420                 goto out_restart;
3421         }
3422
3423         goto out;
3424
3425 out_restart:
3426         /* things keep failing, better restart the hw */
3427         iwl_mvm_nic_restart(mvm, false);
3428
3429 out:
3430         mutex_unlock(&mvm->mutex);
3431
3432         return ret;
3433 }
3434
3435 static int
3436 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3437                                     struct ieee80211_vif_chanctx_switch *vifs)
3438 {
3439         int ret;
3440
3441         mutex_lock(&mvm->mutex);
3442         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3443
3444         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3445                                            true);
3446         if (ret) {
3447                 IWL_ERR(mvm,
3448                         "failed to assign new_ctx during channel switch\n");
3449                 goto out_reassign;
3450         }
3451
3452         goto out;
3453
3454 out_reassign:
3455         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3456                                          true)) {
3457                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3458                 goto out_restart;
3459         }
3460
3461         goto out;
3462
3463 out_restart:
3464         /* things keep failing, better restart the hw */
3465         iwl_mvm_nic_restart(mvm, false);
3466
3467 out:
3468         mutex_unlock(&mvm->mutex);
3469
3470         return ret;
3471 }
3472
3473 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3474                                       struct ieee80211_vif_chanctx_switch *vifs,
3475                                       int n_vifs,
3476                                       enum ieee80211_chanctx_switch_mode mode)
3477 {
3478         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3479         int ret;
3480
3481         /* we only support a single-vif right now */
3482         if (n_vifs > 1)
3483                 return -EOPNOTSUPP;
3484
3485         switch (mode) {
3486         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3487                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3488                 break;
3489         case CHANCTX_SWMODE_REASSIGN_VIF:
3490                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3491                 break;
3492         default:
3493                 ret = -EOPNOTSUPP;
3494                 break;
3495         }
3496
3497         return ret;
3498 }
3499
3500 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3501                            struct ieee80211_sta *sta,
3502                            bool set)
3503 {
3504         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3505         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3506
3507         if (!mvm_sta || !mvm_sta->vif) {
3508                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3509                 return -EINVAL;
3510         }
3511
3512         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3513 }
3514
3515 #ifdef CONFIG_NL80211_TESTMODE
3516 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3517         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3518         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3519         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3520 };
3521
3522 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3523                                       struct ieee80211_vif *vif,
3524                                       void *data, int len)
3525 {
3526         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3527         int err;
3528         u32 noa_duration;
3529
3530         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3531         if (err)
3532                 return err;
3533
3534         if (!tb[IWL_MVM_TM_ATTR_CMD])
3535                 return -EINVAL;
3536
3537         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3538         case IWL_MVM_TM_CMD_SET_NOA:
3539                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3540                     !vif->bss_conf.enable_beacon ||
3541                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3542                         return -EINVAL;
3543
3544                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3545                 if (noa_duration >= vif->bss_conf.beacon_int)
3546                         return -EINVAL;
3547
3548                 mvm->noa_duration = noa_duration;
3549                 mvm->noa_vif = vif;
3550
3551                 return iwl_mvm_update_quotas(mvm, false, NULL);
3552         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3553                 /* must be associated client vif - ignore authorized */
3554                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3555                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3556                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3557                         return -EINVAL;
3558
3559                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3560                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3561                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3562         }
3563
3564         return -EOPNOTSUPP;
3565 }
3566
3567 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3568                                     struct ieee80211_vif *vif,
3569                                     void *data, int len)
3570 {
3571         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3572         int err;
3573
3574         mutex_lock(&mvm->mutex);
3575         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3576         mutex_unlock(&mvm->mutex);
3577
3578         return err;
3579 }
3580 #endif
3581
3582 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3583                                    struct ieee80211_vif *vif,
3584                                    struct ieee80211_channel_switch *chsw)
3585 {
3586         /* By implementing this operation, we prevent mac80211 from
3587          * starting its own channel switch timer, so that we can call
3588          * ieee80211_chswitch_done() ourselves at the right time
3589          * (which is when the absence time event starts).
3590          */
3591
3592         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3593                            "dummy channel switch op\n");
3594 }
3595
3596 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3597                                       struct ieee80211_vif *vif,
3598                                       struct ieee80211_channel_switch *chsw)
3599 {
3600         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3601         struct ieee80211_vif *csa_vif;
3602         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3603         u32 apply_time;
3604         int ret;
3605
3606         mutex_lock(&mvm->mutex);
3607
3608         mvmvif->csa_failed = false;
3609
3610         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3611                            chsw->chandef.center_freq1);
3612
3613         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3614
3615         switch (vif->type) {
3616         case NL80211_IFTYPE_AP:
3617                 csa_vif =
3618                         rcu_dereference_protected(mvm->csa_vif,
3619                                                   lockdep_is_held(&mvm->mutex));
3620                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3621                               "Another CSA is already in progress")) {
3622                         ret = -EBUSY;
3623                         goto out_unlock;
3624                 }
3625
3626                 rcu_assign_pointer(mvm->csa_vif, vif);
3627
3628                 if (WARN_ONCE(mvmvif->csa_countdown,
3629                               "Previous CSA countdown didn't complete")) {
3630                         ret = -EBUSY;
3631                         goto out_unlock;
3632                 }
3633
3634                 break;
3635         case NL80211_IFTYPE_STATION:
3636                 if (mvmvif->lqm_active)
3637                         iwl_mvm_send_lqm_cmd(vif,
3638                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3639                                              0, 0);
3640
3641                 /* Schedule the time event to a bit before beacon 1,
3642                  * to make sure we're in the new channel when the
3643                  * GO/AP arrives.
3644                  */
3645                 apply_time = chsw->device_timestamp +
3646                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3647                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3648
3649                 if (chsw->block_tx)
3650                         iwl_mvm_csa_client_absent(mvm, vif);
3651
3652                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3653                                             apply_time);
3654                 if (mvmvif->bf_data.bf_enabled) {
3655                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3656                         if (ret)
3657                                 goto out_unlock;
3658                 }
3659
3660                 break;
3661         default:
3662                 break;
3663         }
3664
3665         mvmvif->ps_disabled = true;
3666
3667         ret = iwl_mvm_power_update_ps(mvm);
3668         if (ret)
3669                 goto out_unlock;
3670
3671         /* we won't be on this channel any longer */
3672         iwl_mvm_teardown_tdls_peers(mvm);
3673
3674 out_unlock:
3675         mutex_unlock(&mvm->mutex);
3676
3677         return ret;
3678 }
3679
3680 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3681                                        struct ieee80211_vif *vif)
3682 {
3683         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3684         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3685         int ret;
3686
3687         mutex_lock(&mvm->mutex);
3688
3689         if (mvmvif->csa_failed) {
3690                 mvmvif->csa_failed = false;
3691                 ret = -EIO;
3692                 goto out_unlock;
3693         }
3694
3695         if (vif->type == NL80211_IFTYPE_STATION) {
3696                 struct iwl_mvm_sta *mvmsta;
3697
3698                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3699                                                           mvmvif->ap_sta_id);
3700
3701                 if (WARN_ON(!mvmsta)) {
3702                         ret = -EIO;
3703                         goto out_unlock;
3704                 }
3705
3706                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3707
3708                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3709
3710                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3711                 if (ret)
3712                         goto out_unlock;
3713
3714                 iwl_mvm_stop_session_protection(mvm, vif);
3715         }
3716
3717         mvmvif->ps_disabled = false;
3718
3719         ret = iwl_mvm_power_update_ps(mvm);
3720
3721 out_unlock:
3722         mutex_unlock(&mvm->mutex);
3723
3724         return ret;
3725 }
3726
3727 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3728                               struct ieee80211_vif *vif, u32 queues, bool drop)
3729 {
3730         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3731         struct iwl_mvm_vif *mvmvif;
3732         struct iwl_mvm_sta *mvmsta;
3733         struct ieee80211_sta *sta;
3734         int i;
3735         u32 msk = 0;
3736
3737         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3738                 return;
3739
3740         mutex_lock(&mvm->mutex);
3741         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3742
3743         /* flush the AP-station and all TDLS peers */
3744         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3745                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3746                                                 lockdep_is_held(&mvm->mutex));
3747                 if (IS_ERR_OR_NULL(sta))
3748                         continue;
3749
3750                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3751                 if (mvmsta->vif != vif)
3752                         continue;
3753
3754                 /* make sure only TDLS peers or the AP are flushed */
3755                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3756
3757                 msk |= mvmsta->tfd_queue_msk;
3758         }
3759
3760         if (drop) {
3761                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3762                         IWL_ERR(mvm, "flush request fail\n");
3763                 mutex_unlock(&mvm->mutex);
3764         } else {
3765                 mutex_unlock(&mvm->mutex);
3766
3767                 /* this can take a while, and we may need/want other operations
3768                  * to succeed while doing this, so do it without the mutex held
3769                  */
3770                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3771         }
3772 }
3773
3774 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3775                                   struct survey_info *survey)
3776 {
3777         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3778         int ret;
3779
3780         memset(survey, 0, sizeof(*survey));
3781
3782         /* only support global statistics right now */
3783         if (idx != 0)
3784                 return -ENOENT;
3785
3786         if (fw_has_capa(&mvm->fw->ucode_capa,
3787                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3788                 return -ENOENT;
3789
3790         mutex_lock(&mvm->mutex);
3791
3792         if (mvm->ucode_loaded) {
3793                 ret = iwl_mvm_request_statistics(mvm, false);
3794                 if (ret)
3795                         goto out;
3796         }
3797
3798         survey->filled = SURVEY_INFO_TIME |
3799                          SURVEY_INFO_TIME_RX |
3800                          SURVEY_INFO_TIME_TX |
3801                          SURVEY_INFO_TIME_SCAN;
3802         survey->time = mvm->accu_radio_stats.on_time_rf +
3803                        mvm->radio_stats.on_time_rf;
3804         do_div(survey->time, USEC_PER_MSEC);
3805
3806         survey->time_rx = mvm->accu_radio_stats.rx_time +
3807                           mvm->radio_stats.rx_time;
3808         do_div(survey->time_rx, USEC_PER_MSEC);
3809
3810         survey->time_tx = mvm->accu_radio_stats.tx_time +
3811                           mvm->radio_stats.tx_time;
3812         do_div(survey->time_tx, USEC_PER_MSEC);
3813
3814         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3815                             mvm->radio_stats.on_time_scan;
3816         do_div(survey->time_scan, USEC_PER_MSEC);
3817
3818         ret = 0;
3819  out:
3820         mutex_unlock(&mvm->mutex);
3821         return ret;
3822 }
3823
3824 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3825                                        struct ieee80211_vif *vif,
3826                                        struct ieee80211_sta *sta,
3827                                        struct station_info *sinfo)
3828 {
3829         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3830         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3831         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3832
3833         if (fw_has_capa(&mvm->fw->ucode_capa,
3834                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3835                 return;
3836
3837         /* if beacon filtering isn't on mac80211 does it anyway */
3838         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3839                 return;
3840
3841         if (!vif->bss_conf.assoc)
3842                 return;
3843
3844         mutex_lock(&mvm->mutex);
3845
3846         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3847                 goto unlock;
3848
3849         if (iwl_mvm_request_statistics(mvm, false))
3850                 goto unlock;
3851
3852         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3853                            mvmvif->beacon_stats.accu_num_beacons;
3854         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3855         if (mvmvif->beacon_stats.avg_signal) {
3856                 /* firmware only reports a value after RXing a few beacons */
3857                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3858                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3859         }
3860  unlock:
3861         mutex_unlock(&mvm->mutex);
3862 }
3863
3864 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3865                                         struct ieee80211_vif *vif,
3866                                         const struct ieee80211_event *event)
3867 {
3868 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3869         do {                                                    \
3870                 if ((_cnt) && --(_cnt))                         \
3871                         break;                                  \
3872                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3873         } while (0)
3874
3875         struct iwl_fw_dbg_trigger_tlv *trig;
3876         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3877
3878         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3879                 return;
3880
3881         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3882         trig_mlme = (void *)trig->data;
3883         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3884                 return;
3885
3886         if (event->u.mlme.data == ASSOC_EVENT) {
3887                 if (event->u.mlme.status == MLME_DENIED)
3888                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3889                                            trig_mlme->stop_assoc_denied,
3890                                            "DENIED ASSOC: reason %d",
3891                                             event->u.mlme.reason);
3892                 else if (event->u.mlme.status == MLME_TIMEOUT)
3893                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3894                                            trig_mlme->stop_assoc_timeout,
3895                                            "ASSOC TIMEOUT");
3896         } else if (event->u.mlme.data == AUTH_EVENT) {
3897                 if (event->u.mlme.status == MLME_DENIED)
3898                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3899                                            trig_mlme->stop_auth_denied,
3900                                            "DENIED AUTH: reason %d",
3901                                            event->u.mlme.reason);
3902                 else if (event->u.mlme.status == MLME_TIMEOUT)
3903                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3904                                            trig_mlme->stop_auth_timeout,
3905                                            "AUTH TIMEOUT");
3906         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3907                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3908                                    trig_mlme->stop_rx_deauth,
3909                                    "DEAUTH RX %d", event->u.mlme.reason);
3910         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3911                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3912                                    trig_mlme->stop_tx_deauth,
3913                                    "DEAUTH TX %d", event->u.mlme.reason);
3914         }
3915 #undef CHECK_MLME_TRIGGER
3916 }
3917
3918 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3919                                           struct ieee80211_vif *vif,
3920                                           const struct ieee80211_event *event)
3921 {
3922         struct iwl_fw_dbg_trigger_tlv *trig;
3923         struct iwl_fw_dbg_trigger_ba *ba_trig;
3924
3925         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3926                 return;
3927
3928         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3929         ba_trig = (void *)trig->data;
3930         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3931                 return;
3932
3933         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3934                 return;
3935
3936         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3937                                     "BAR received from %pM, tid %d, ssn %d",
3938                                     event->u.ba.sta->addr, event->u.ba.tid,
3939                                     event->u.ba.ssn);
3940 }
3941
3942 static void
3943 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3944                                      struct ieee80211_vif *vif,
3945                                      const struct ieee80211_event *event)
3946 {
3947         struct iwl_fw_dbg_trigger_tlv *trig;
3948         struct iwl_fw_dbg_trigger_ba *ba_trig;
3949
3950         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3951                 return;
3952
3953         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3954         ba_trig = (void *)trig->data;
3955         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3956                 return;
3957
3958         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3959                 return;
3960
3961         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3962                                     "Frame from %pM timed out, tid %d",
3963                                     event->u.ba.sta->addr, event->u.ba.tid);
3964 }
3965
3966 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3967                                        struct ieee80211_vif *vif,
3968                                        const struct ieee80211_event *event)
3969 {
3970         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3971
3972         switch (event->type) {
3973         case MLME_EVENT:
3974                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3975                 break;
3976         case BAR_RX_EVENT:
3977                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3978                 break;
3979         case BA_FRAME_TIMEOUT:
3980                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3981                 break;
3982         default:
3983                 break;
3984         }
3985 }
3986
3987 const struct ieee80211_ops iwl_mvm_hw_ops = {
3988         .tx = iwl_mvm_mac_tx,
3989         .ampdu_action = iwl_mvm_mac_ampdu_action,
3990         .start = iwl_mvm_mac_start,
3991         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3992         .stop = iwl_mvm_mac_stop,
3993         .add_interface = iwl_mvm_mac_add_interface,
3994         .remove_interface = iwl_mvm_mac_remove_interface,
3995         .config = iwl_mvm_mac_config,
3996         .prepare_multicast = iwl_mvm_prepare_multicast,
3997         .configure_filter = iwl_mvm_configure_filter,
3998         .config_iface_filter = iwl_mvm_config_iface_filter,
3999         .bss_info_changed = iwl_mvm_bss_info_changed,
4000         .hw_scan = iwl_mvm_mac_hw_scan,
4001         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4002         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4003         .sta_state = iwl_mvm_mac_sta_state,
4004         .sta_notify = iwl_mvm_mac_sta_notify,
4005         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4006         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4007         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4008         .sta_rc_update = iwl_mvm_sta_rc_update,
4009         .conf_tx = iwl_mvm_mac_conf_tx,
4010         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4011         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4012         .flush = iwl_mvm_mac_flush,
4013         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4014         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4015         .set_key = iwl_mvm_mac_set_key,
4016         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4017         .remain_on_channel = iwl_mvm_roc,
4018         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4019         .add_chanctx = iwl_mvm_add_chanctx,
4020         .remove_chanctx = iwl_mvm_remove_chanctx,
4021         .change_chanctx = iwl_mvm_change_chanctx,
4022         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4023         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4024         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4025
4026         .start_ap = iwl_mvm_start_ap_ibss,
4027         .stop_ap = iwl_mvm_stop_ap_ibss,
4028         .join_ibss = iwl_mvm_start_ap_ibss,
4029         .leave_ibss = iwl_mvm_stop_ap_ibss,
4030
4031         .set_tim = iwl_mvm_set_tim,
4032
4033         .channel_switch = iwl_mvm_channel_switch,
4034         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4035         .post_channel_switch = iwl_mvm_post_channel_switch,
4036
4037         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4038         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4039         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4040
4041         .event_callback = iwl_mvm_mac_event_callback,
4042
4043         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4044
4045 #ifdef CONFIG_PM_SLEEP
4046         /* look at d3.c */
4047         .suspend = iwl_mvm_suspend,
4048         .resume = iwl_mvm_resume,
4049         .set_wakeup = iwl_mvm_set_wakeup,
4050         .set_rekey_data = iwl_mvm_set_rekey_data,
4051 #if IS_ENABLED(CONFIG_IPV6)
4052         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4053 #endif
4054         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4055 #endif
4056         .get_survey = iwl_mvm_mac_get_survey,
4057         .sta_statistics = iwl_mvm_mac_sta_statistics,
4058 };