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         /*
1825          * If we're not associated yet, take the (new) BSSID before associating
1826          * so the firmware knows. If we're already associated, then use the old
1827          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1828          * branch for disassociation below.
1829          */
1830         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1831                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1832
1833         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1834         if (ret)
1835                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1836
1837         /* after sending it once, adopt mac80211 data */
1838         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1839         mvmvif->associated = bss_conf->assoc;
1840
1841         if (changes & BSS_CHANGED_ASSOC) {
1842                 if (bss_conf->assoc) {
1843                         /* clear statistics to get clean beacon counter */
1844                         iwl_mvm_request_statistics(mvm, true);
1845                         memset(&mvmvif->beacon_stats, 0,
1846                                sizeof(mvmvif->beacon_stats));
1847
1848                         /* add quota for this interface */
1849                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1850                         if (ret) {
1851                                 IWL_ERR(mvm, "failed to update quotas\n");
1852                                 return;
1853                         }
1854
1855                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1856                                      &mvm->status)) {
1857                                 /*
1858                                  * If we're restarting then the firmware will
1859                                  * obviously have lost synchronisation with
1860                                  * the AP. It will attempt to synchronise by
1861                                  * itself, but we can make it more reliable by
1862                                  * scheduling a session protection time event.
1863                                  *
1864                                  * The firmware needs to receive a beacon to
1865                                  * catch up with synchronisation, use 110% of
1866                                  * the beacon interval.
1867                                  *
1868                                  * Set a large maximum delay to allow for more
1869                                  * than a single interface.
1870                                  */
1871                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1872                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1873                                                         5 * dur, false);
1874                         }
1875
1876                         iwl_mvm_sf_update(mvm, vif, false);
1877                         iwl_mvm_power_vif_assoc(mvm, vif);
1878                         if (vif->p2p) {
1879                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1880                                 iwl_mvm_update_smps(mvm, vif,
1881                                                     IWL_MVM_SMPS_REQ_PROT,
1882                                                     IEEE80211_SMPS_DYNAMIC);
1883                         }
1884                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1885                         /*
1886                          * If update fails - SF might be running in associated
1887                          * mode while disassociated - which is forbidden.
1888                          */
1889                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1890                                   "Failed to update SF upon disassociation\n");
1891
1892                         /* remove AP station now that the MAC is unassoc */
1893                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1894                         if (ret)
1895                                 IWL_ERR(mvm, "failed to remove AP station\n");
1896
1897                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1898                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1899                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1900                         /* remove quota for this interface */
1901                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1902                         if (ret)
1903                                 IWL_ERR(mvm, "failed to update quotas\n");
1904
1905                         if (vif->p2p)
1906                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1907
1908                         /* this will take the cleared BSSID from bss_conf */
1909                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1910                         if (ret)
1911                                 IWL_ERR(mvm,
1912                                         "failed to update MAC %pM (clear after unassoc)\n",
1913                                         vif->addr);
1914                 }
1915
1916                 /*
1917                  * The firmware tracks the MU-MIMO group on its own.
1918                  * However, on HW restart we should restore this data.
1919                  */
1920                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1921                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1922                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1923                         if (ret)
1924                                 IWL_ERR(mvm,
1925                                         "failed to update VHT MU_MIMO groups\n");
1926                 }
1927
1928                 iwl_mvm_recalc_multicast(mvm);
1929                 iwl_mvm_configure_bcast_filter(mvm);
1930
1931                 /* reset rssi values */
1932                 mvmvif->bf_data.ave_beacon_signal = 0;
1933
1934                 iwl_mvm_bt_coex_vif_change(mvm);
1935                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1936                                     IEEE80211_SMPS_AUTOMATIC);
1937                 if (fw_has_capa(&mvm->fw->ucode_capa,
1938                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1939                         iwl_mvm_config_scan(mvm);
1940         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1941                 /*
1942                  * We received a beacon _after_ association so
1943                  * remove the session protection.
1944                  */
1945                 iwl_mvm_remove_time_event(mvm, mvmvif,
1946                                           &mvmvif->time_event_data);
1947         }
1948
1949         if (changes & BSS_CHANGED_BEACON_INFO) {
1950                 iwl_mvm_sf_update(mvm, vif, false);
1951                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1952         }
1953
1954         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1955                        /*
1956                         * Send power command on every beacon change,
1957                         * because we may have not enabled beacon abort yet.
1958                         */
1959                        BSS_CHANGED_BEACON_INFO)) {
1960                 ret = iwl_mvm_power_update_mac(mvm);
1961                 if (ret)
1962                         IWL_ERR(mvm, "failed to update power mode\n");
1963         }
1964
1965         if (changes & BSS_CHANGED_TXPOWER) {
1966                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1967                                 bss_conf->txpower);
1968                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1969         }
1970
1971         if (changes & BSS_CHANGED_CQM) {
1972                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1973                 /* reset cqm events tracking */
1974                 mvmvif->bf_data.last_cqm_event = 0;
1975                 if (mvmvif->bf_data.bf_enabled) {
1976                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1977                         if (ret)
1978                                 IWL_ERR(mvm,
1979                                         "failed to update CQM thresholds\n");
1980                 }
1981         }
1982
1983         if (changes & BSS_CHANGED_ARP_FILTER) {
1984                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1985                 iwl_mvm_configure_bcast_filter(mvm);
1986         }
1987 }
1988
1989 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1990                                  struct ieee80211_vif *vif)
1991 {
1992         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1993         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1994         int ret;
1995
1996         /*
1997          * iwl_mvm_mac_ctxt_add() might read directly from the device
1998          * (the system time), so make sure it is available.
1999          */
2000         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2001         if (ret)
2002                 return ret;
2003
2004         mutex_lock(&mvm->mutex);
2005
2006         /* Send the beacon template */
2007         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2008         if (ret)
2009                 goto out_unlock;
2010
2011         /*
2012          * Re-calculate the tsf id, as the master-slave relations depend on the
2013          * beacon interval, which was not known when the AP interface was added.
2014          */
2015         if (vif->type == NL80211_IFTYPE_AP)
2016                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2017
2018         mvmvif->ap_assoc_sta_count = 0;
2019
2020         /* Add the mac context */
2021         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2022         if (ret)
2023                 goto out_unlock;
2024
2025         /* Perform the binding */
2026         ret = iwl_mvm_binding_add_vif(mvm, vif);
2027         if (ret)
2028                 goto out_remove;
2029
2030         /* Send the bcast station. At this stage the TBTT and DTIM time events
2031          * are added and applied to the scheduler */
2032         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2033         if (ret)
2034                 goto out_unbind;
2035
2036         /* must be set before quota calculations */
2037         mvmvif->ap_ibss_active = true;
2038
2039         /* power updated needs to be done before quotas */
2040         iwl_mvm_power_update_mac(mvm);
2041
2042         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2043         if (ret)
2044                 goto out_quota_failed;
2045
2046         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2047         if (vif->p2p && mvm->p2p_device_vif)
2048                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2049
2050         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2051
2052         iwl_mvm_bt_coex_vif_change(mvm);
2053
2054         /* we don't support TDLS during DCM */
2055         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2056                 iwl_mvm_teardown_tdls_peers(mvm);
2057
2058         goto out_unlock;
2059
2060 out_quota_failed:
2061         iwl_mvm_power_update_mac(mvm);
2062         mvmvif->ap_ibss_active = false;
2063         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2064 out_unbind:
2065         iwl_mvm_binding_remove_vif(mvm, vif);
2066 out_remove:
2067         iwl_mvm_mac_ctxt_remove(mvm, vif);
2068 out_unlock:
2069         mutex_unlock(&mvm->mutex);
2070         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2071         return ret;
2072 }
2073
2074 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2075                                  struct ieee80211_vif *vif)
2076 {
2077         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2078         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2079
2080         iwl_mvm_prepare_mac_removal(mvm, vif);
2081
2082         mutex_lock(&mvm->mutex);
2083
2084         /* Handle AP stop while in CSA */
2085         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2086                 iwl_mvm_remove_time_event(mvm, mvmvif,
2087                                           &mvmvif->time_event_data);
2088                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2089                 mvmvif->csa_countdown = false;
2090         }
2091
2092         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2093                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2094                 mvm->csa_tx_block_bcn_timeout = 0;
2095         }
2096
2097         mvmvif->ap_ibss_active = false;
2098         mvm->ap_last_beacon_gp2 = 0;
2099
2100         iwl_mvm_bt_coex_vif_change(mvm);
2101
2102         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2103
2104         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2105         if (vif->p2p && mvm->p2p_device_vif)
2106                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2107
2108         iwl_mvm_update_quotas(mvm, false, NULL);
2109         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2110         iwl_mvm_binding_remove_vif(mvm, vif);
2111
2112         iwl_mvm_power_update_mac(mvm);
2113
2114         iwl_mvm_mac_ctxt_remove(mvm, vif);
2115
2116         mutex_unlock(&mvm->mutex);
2117 }
2118
2119 static void
2120 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2121                                  struct ieee80211_vif *vif,
2122                                  struct ieee80211_bss_conf *bss_conf,
2123                                  u32 changes)
2124 {
2125         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2126
2127         /* Changes will be applied when the AP/IBSS is started */
2128         if (!mvmvif->ap_ibss_active)
2129                 return;
2130
2131         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2132                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2133             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2134                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2135
2136         /* Need to send a new beacon template to the FW */
2137         if (changes & BSS_CHANGED_BEACON &&
2138             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2139                 IWL_WARN(mvm, "Failed updating beacon data\n");
2140
2141         if (changes & BSS_CHANGED_TXPOWER) {
2142                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2143                                 bss_conf->txpower);
2144                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2145         }
2146 }
2147
2148 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2149                                      struct ieee80211_vif *vif,
2150                                      struct ieee80211_bss_conf *bss_conf,
2151                                      u32 changes)
2152 {
2153         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2154
2155         /*
2156          * iwl_mvm_bss_info_changed_station() might call
2157          * iwl_mvm_protect_session(), which reads directly from
2158          * the device (the system time), so make sure it is available.
2159          */
2160         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2161                 return;
2162
2163         mutex_lock(&mvm->mutex);
2164
2165         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2166                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2167
2168         switch (vif->type) {
2169         case NL80211_IFTYPE_STATION:
2170                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2171                 break;
2172         case NL80211_IFTYPE_AP:
2173         case NL80211_IFTYPE_ADHOC:
2174                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2175                 break;
2176         default:
2177                 /* shouldn't happen */
2178                 WARN_ON_ONCE(1);
2179         }
2180
2181         mutex_unlock(&mvm->mutex);
2182         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2183 }
2184
2185 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2186                                struct ieee80211_vif *vif,
2187                                struct ieee80211_scan_request *hw_req)
2188 {
2189         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2190         int ret;
2191
2192         if (hw_req->req.n_channels == 0 ||
2193             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2194                 return -EINVAL;
2195
2196         mutex_lock(&mvm->mutex);
2197         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2198         mutex_unlock(&mvm->mutex);
2199
2200         return ret;
2201 }
2202
2203 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2204                                        struct ieee80211_vif *vif)
2205 {
2206         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2207
2208         mutex_lock(&mvm->mutex);
2209
2210         /* Due to a race condition, it's possible that mac80211 asks
2211          * us to stop a hw_scan when it's already stopped.  This can
2212          * happen, for instance, if we stopped the scan ourselves,
2213          * called ieee80211_scan_completed() and the userspace called
2214          * cancel scan scan before ieee80211_scan_work() could run.
2215          * To handle that, simply return if the scan is not running.
2216         */
2217         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2218                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2219
2220         mutex_unlock(&mvm->mutex);
2221 }
2222
2223 static void
2224 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2225                                   struct ieee80211_sta *sta, u16 tids,
2226                                   int num_frames,
2227                                   enum ieee80211_frame_release_type reason,
2228                                   bool more_data)
2229 {
2230         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2231
2232         /* Called when we need to transmit (a) frame(s) from mac80211 */
2233
2234         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2235                                           tids, more_data, false);
2236 }
2237
2238 static void
2239 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2240                                     struct ieee80211_sta *sta, u16 tids,
2241                                     int num_frames,
2242                                     enum ieee80211_frame_release_type reason,
2243                                     bool more_data)
2244 {
2245         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2246
2247         /* Called when we need to transmit (a) frame(s) from agg queue */
2248
2249         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2250                                           tids, more_data, true);
2251 }
2252
2253 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2254                                    struct ieee80211_vif *vif,
2255                                    enum sta_notify_cmd cmd,
2256                                    struct ieee80211_sta *sta)
2257 {
2258         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2259         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2260         unsigned long txqs = 0, tids = 0;
2261         int tid;
2262
2263         spin_lock_bh(&mvmsta->lock);
2264         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2265                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2266
2267                 if (tid_data->state != IWL_AGG_ON &&
2268                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2269                         continue;
2270
2271                 __set_bit(tid_data->txq_id, &txqs);
2272
2273                 if (iwl_mvm_tid_queued(tid_data) == 0)
2274                         continue;
2275
2276                 __set_bit(tid, &tids);
2277         }
2278
2279         switch (cmd) {
2280         case STA_NOTIFY_SLEEP:
2281                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2282                         ieee80211_sta_block_awake(hw, sta, true);
2283
2284                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2285                         ieee80211_sta_set_buffered(sta, tid, true);
2286
2287                 if (txqs)
2288                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2289                 /*
2290                  * The fw updates the STA to be asleep. Tx packets on the Tx
2291                  * queues to this station will not be transmitted. The fw will
2292                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2293                  */
2294                 break;
2295         case STA_NOTIFY_AWAKE:
2296                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2297                         break;
2298
2299                 if (txqs)
2300                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2301                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2302                 break;
2303         default:
2304                 break;
2305         }
2306         spin_unlock_bh(&mvmsta->lock);
2307 }
2308
2309 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2310                                        struct ieee80211_vif *vif,
2311                                        struct ieee80211_sta *sta)
2312 {
2313         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2314         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2315
2316         /*
2317          * This is called before mac80211 does RCU synchronisation,
2318          * so here we already invalidate our internal RCU-protected
2319          * station pointer. The rest of the code will thus no longer
2320          * be able to find the station this way, and we don't rely
2321          * on further RCU synchronisation after the sta_state()
2322          * callback deleted the station.
2323          */
2324         mutex_lock(&mvm->mutex);
2325         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2326                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2327                                    ERR_PTR(-ENOENT));
2328
2329         mutex_unlock(&mvm->mutex);
2330 }
2331
2332 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2333                                 const u8 *bssid)
2334 {
2335         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2336                 return;
2337
2338         if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2339                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2340                 return;
2341         }
2342
2343         if (iwlwifi_mod_params.uapsd_disable) {
2344                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2345                 return;
2346         }
2347
2348         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2349 }
2350
2351 static void
2352 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2353                            struct ieee80211_vif *vif, u8 *peer_addr,
2354                            enum nl80211_tdls_operation action)
2355 {
2356         struct iwl_fw_dbg_trigger_tlv *trig;
2357         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2358
2359         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2360                 return;
2361
2362         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2363         tdls_trig = (void *)trig->data;
2364         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2365                 return;
2366
2367         if (!(tdls_trig->action_bitmap & BIT(action)))
2368                 return;
2369
2370         if (tdls_trig->peer_mode &&
2371             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2372                 return;
2373
2374         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2375                                     "TDLS event occurred, peer %pM, action %d",
2376                                     peer_addr, action);
2377 }
2378
2379 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2380                                  struct ieee80211_vif *vif,
2381                                  struct ieee80211_sta *sta,
2382                                  enum ieee80211_sta_state old_state,
2383                                  enum ieee80211_sta_state new_state)
2384 {
2385         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2386         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2387         int ret;
2388
2389         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2390                            sta->addr, old_state, new_state);
2391
2392         /* this would be a mac80211 bug ... but don't crash */
2393         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2394                 return -EINVAL;
2395
2396         /* if a STA is being removed, reuse its ID */
2397         flush_work(&mvm->sta_drained_wk);
2398
2399         mutex_lock(&mvm->mutex);
2400         if (old_state == IEEE80211_STA_NOTEXIST &&
2401             new_state == IEEE80211_STA_NONE) {
2402                 /*
2403                  * Firmware bug - it'll crash if the beacon interval is less
2404                  * than 16. We can't avoid connecting at all, so refuse the
2405                  * station state change, this will cause mac80211 to abandon
2406                  * attempts to connect to this AP, and eventually wpa_s will
2407                  * blacklist the AP...
2408                  */
2409                 if (vif->type == NL80211_IFTYPE_STATION &&
2410                     vif->bss_conf.beacon_int < 16) {
2411                         IWL_ERR(mvm,
2412                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2413                                 sta->addr, vif->bss_conf.beacon_int);
2414                         ret = -EINVAL;
2415                         goto out_unlock;
2416                 }
2417
2418                 if (sta->tdls &&
2419                     (vif->p2p ||
2420                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2421                                                 IWL_MVM_TDLS_STA_COUNT ||
2422                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2423                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2424                         ret = -EBUSY;
2425                         goto out_unlock;
2426                 }
2427
2428                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2429                 if (sta->tdls && ret == 0) {
2430                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2431                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2432                                                    NL80211_TDLS_SETUP);
2433                 }
2434         } else if (old_state == IEEE80211_STA_NONE &&
2435                    new_state == IEEE80211_STA_AUTH) {
2436                 /*
2437                  * EBS may be disabled due to previous failures reported by FW.
2438                  * Reset EBS status here assuming environment has been changed.
2439                  */
2440                 mvm->last_ebs_successful = true;
2441                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2442                 ret = 0;
2443         } else if (old_state == IEEE80211_STA_AUTH &&
2444                    new_state == IEEE80211_STA_ASSOC) {
2445                 if (vif->type == NL80211_IFTYPE_AP) {
2446                         mvmvif->ap_assoc_sta_count++;
2447                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2448                 }
2449                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2450                 if (ret == 0)
2451                         iwl_mvm_rs_rate_init(mvm, sta,
2452                                              mvmvif->phy_ctxt->channel->band,
2453                                              true);
2454         } else if (old_state == IEEE80211_STA_ASSOC &&
2455                    new_state == IEEE80211_STA_AUTHORIZED) {
2456
2457                 /* we don't support TDLS during DCM */
2458                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2459                         iwl_mvm_teardown_tdls_peers(mvm);
2460
2461                 if (sta->tdls)
2462                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2463                                                    NL80211_TDLS_ENABLE_LINK);
2464
2465                 /* enable beacon filtering */
2466                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2467                 ret = 0;
2468         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2469                    new_state == IEEE80211_STA_ASSOC) {
2470                 /* disable beacon filtering */
2471                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2472                 ret = 0;
2473         } else if (old_state == IEEE80211_STA_ASSOC &&
2474                    new_state == IEEE80211_STA_AUTH) {
2475                 if (vif->type == NL80211_IFTYPE_AP) {
2476                         mvmvif->ap_assoc_sta_count--;
2477                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2478                 }
2479                 ret = 0;
2480         } else if (old_state == IEEE80211_STA_AUTH &&
2481                    new_state == IEEE80211_STA_NONE) {
2482                 ret = 0;
2483         } else if (old_state == IEEE80211_STA_NONE &&
2484                    new_state == IEEE80211_STA_NOTEXIST) {
2485                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2486                 if (sta->tdls) {
2487                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2488                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2489                                                    NL80211_TDLS_DISABLE_LINK);
2490                 }
2491         } else {
2492                 ret = -EIO;
2493         }
2494  out_unlock:
2495         mutex_unlock(&mvm->mutex);
2496
2497         if (sta->tdls && ret == 0) {
2498                 if (old_state == IEEE80211_STA_NOTEXIST &&
2499                     new_state == IEEE80211_STA_NONE)
2500                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2501                 else if (old_state == IEEE80211_STA_NONE &&
2502                          new_state == IEEE80211_STA_NOTEXIST)
2503                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2504         }
2505
2506         return ret;
2507 }
2508
2509 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2510 {
2511         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2512
2513         mvm->rts_threshold = value;
2514
2515         return 0;
2516 }
2517
2518 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2519                                   struct ieee80211_vif *vif,
2520                                   struct ieee80211_sta *sta, u32 changed)
2521 {
2522         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2523
2524         if (vif->type == NL80211_IFTYPE_STATION &&
2525             changed & IEEE80211_RC_NSS_CHANGED)
2526                 iwl_mvm_sf_update(mvm, vif, false);
2527 }
2528
2529 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2530                                struct ieee80211_vif *vif, u16 ac,
2531                                const struct ieee80211_tx_queue_params *params)
2532 {
2533         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2534         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2535
2536         mvmvif->queue_params[ac] = *params;
2537
2538         /*
2539          * No need to update right away, we'll get BSS_CHANGED_QOS
2540          * The exception is P2P_DEVICE interface which needs immediate update.
2541          */
2542         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2543                 int ret;
2544
2545                 mutex_lock(&mvm->mutex);
2546                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2547                 mutex_unlock(&mvm->mutex);
2548                 return ret;
2549         }
2550         return 0;
2551 }
2552
2553 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2554                                       struct ieee80211_vif *vif)
2555 {
2556         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2557         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2558         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2559
2560         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2561                 return;
2562
2563         /*
2564          * iwl_mvm_protect_session() reads directly from the device
2565          * (the system time), so make sure it is available.
2566          */
2567         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2568                 return;
2569
2570         mutex_lock(&mvm->mutex);
2571         /* Try really hard to protect the session and hear a beacon */
2572         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2573         mutex_unlock(&mvm->mutex);
2574
2575         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2576 }
2577
2578 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2579                                         struct ieee80211_vif *vif,
2580                                         struct cfg80211_sched_scan_request *req,
2581                                         struct ieee80211_scan_ies *ies)
2582 {
2583         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2584
2585         int ret;
2586
2587         mutex_lock(&mvm->mutex);
2588
2589         if (!vif->bss_conf.idle) {
2590                 ret = -EBUSY;
2591                 goto out;
2592         }
2593
2594         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2595
2596 out:
2597         mutex_unlock(&mvm->mutex);
2598         return ret;
2599 }
2600
2601 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2602                                        struct ieee80211_vif *vif)
2603 {
2604         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2605         int ret;
2606
2607         mutex_lock(&mvm->mutex);
2608
2609         /* Due to a race condition, it's possible that mac80211 asks
2610          * us to stop a sched_scan when it's already stopped.  This
2611          * can happen, for instance, if we stopped the scan ourselves,
2612          * called ieee80211_sched_scan_stopped() and the userspace called
2613          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2614          * could run.  To handle this, simply return if the scan is
2615          * not running.
2616         */
2617         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2618                 mutex_unlock(&mvm->mutex);
2619                 return 0;
2620         }
2621
2622         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2623         mutex_unlock(&mvm->mutex);
2624         iwl_mvm_wait_for_async_handlers(mvm);
2625
2626         return ret;
2627 }
2628
2629 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2630                                enum set_key_cmd cmd,
2631                                struct ieee80211_vif *vif,
2632                                struct ieee80211_sta *sta,
2633                                struct ieee80211_key_conf *key)
2634 {
2635         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2636         struct iwl_mvm_sta *mvmsta;
2637         struct iwl_mvm_key_pn *ptk_pn;
2638         int keyidx = key->keyidx;
2639         int ret;
2640         u8 key_offset;
2641
2642         if (iwlwifi_mod_params.sw_crypto) {
2643                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2644                 return -EOPNOTSUPP;
2645         }
2646
2647         switch (key->cipher) {
2648         case WLAN_CIPHER_SUITE_TKIP:
2649                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2650                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2651                 break;
2652         case WLAN_CIPHER_SUITE_CCMP:
2653                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2654                 break;
2655         case WLAN_CIPHER_SUITE_AES_CMAC:
2656                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2657                 break;
2658         case WLAN_CIPHER_SUITE_WEP40:
2659         case WLAN_CIPHER_SUITE_WEP104:
2660                 /* For non-client mode, only use WEP keys for TX as we probably
2661                  * don't have a station yet anyway and would then have to keep
2662                  * track of the keys, linking them to each of the clients/peers
2663                  * as they appear. For now, don't do that, for performance WEP
2664                  * offload doesn't really matter much, but we need it for some
2665                  * other offload features in client mode.
2666                  */
2667                 if (vif->type != NL80211_IFTYPE_STATION)
2668                         return 0;
2669                 break;
2670         default:
2671                 /* currently FW supports only one optional cipher scheme */
2672                 if (hw->n_cipher_schemes &&
2673                     hw->cipher_schemes->cipher == key->cipher)
2674                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2675                 else
2676                         return -EOPNOTSUPP;
2677         }
2678
2679         mutex_lock(&mvm->mutex);
2680
2681         switch (cmd) {
2682         case SET_KEY:
2683                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2684                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2685                         /*
2686                          * GTK on AP interface is a TX-only key, return 0;
2687                          * on IBSS they're per-station and because we're lazy
2688                          * we don't support them for RX, so do the same.
2689                          */
2690                         ret = 0;
2691                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2692                         break;
2693                 }
2694
2695                 /* During FW restart, in order to restore the state as it was,
2696                  * don't try to reprogram keys we previously failed for.
2697                  */
2698                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2699                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2700                         IWL_DEBUG_MAC80211(mvm,
2701                                            "skip invalid idx key programming during restart\n");
2702                         ret = 0;
2703                         break;
2704                 }
2705
2706                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2707                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2708                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2709                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2710                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2711                         struct ieee80211_key_seq seq;
2712                         int tid, q;
2713
2714                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2715                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2716                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2717                                          mvm->trans->num_rx_queues *
2718                                                 sizeof(ptk_pn->q[0]),
2719                                          GFP_KERNEL);
2720                         if (!ptk_pn) {
2721                                 ret = -ENOMEM;
2722                                 break;
2723                         }
2724
2725                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2726                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2727                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2728                                         memcpy(ptk_pn->q[q].pn[tid],
2729                                                seq.ccmp.pn,
2730                                                IEEE80211_CCMP_PN_LEN);
2731                         }
2732
2733                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2734                 }
2735
2736                 /* in HW restart reuse the index, otherwise request a new one */
2737                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2738                         key_offset = key->hw_key_idx;
2739                 else
2740                         key_offset = STA_KEY_IDX_INVALID;
2741
2742                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2743                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2744                 if (ret) {
2745                         IWL_WARN(mvm, "set key failed\n");
2746                         /*
2747                          * can't add key for RX, but we don't need it
2748                          * in the device for TX so still return 0
2749                          */
2750                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2751                         ret = 0;
2752                 }
2753
2754                 break;
2755         case DISABLE_KEY:
2756                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2757                         ret = 0;
2758                         break;
2759                 }
2760
2761                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2762                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2763                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2764                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2765                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2766                         ptk_pn = rcu_dereference_protected(
2767                                                 mvmsta->ptk_pn[keyidx],
2768                                                 lockdep_is_held(&mvm->mutex));
2769                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2770                         if (ptk_pn)
2771                                 kfree_rcu(ptk_pn, rcu_head);
2772                 }
2773
2774                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2775                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2776                 break;
2777         default:
2778                 ret = -EINVAL;
2779         }
2780
2781         mutex_unlock(&mvm->mutex);
2782         return ret;
2783 }
2784
2785 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2786                                         struct ieee80211_vif *vif,
2787                                         struct ieee80211_key_conf *keyconf,
2788                                         struct ieee80211_sta *sta,
2789                                         u32 iv32, u16 *phase1key)
2790 {
2791         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2792
2793         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2794                 return;
2795
2796         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2797 }
2798
2799
2800 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2801                                struct iwl_rx_packet *pkt, void *data)
2802 {
2803         struct iwl_mvm *mvm =
2804                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2805         struct iwl_hs20_roc_res *resp;
2806         int resp_len = iwl_rx_packet_payload_len(pkt);
2807         struct iwl_mvm_time_event_data *te_data = data;
2808
2809         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2810                 return true;
2811
2812         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2813                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2814                 return true;
2815         }
2816
2817         resp = (void *)pkt->data;
2818
2819         IWL_DEBUG_TE(mvm,
2820                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2821                      resp->status, resp->event_unique_id);
2822
2823         te_data->uid = le32_to_cpu(resp->event_unique_id);
2824         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2825                      te_data->uid);
2826
2827         spin_lock_bh(&mvm->time_event_lock);
2828         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2829         spin_unlock_bh(&mvm->time_event_lock);
2830
2831         return true;
2832 }
2833
2834 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2835 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2836 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2837 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2838 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2839 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2840                                     struct ieee80211_channel *channel,
2841                                     struct ieee80211_vif *vif,
2842                                     int duration)
2843 {
2844         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2845         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2846         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2847         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2848         struct iwl_notification_wait wait_time_event;
2849         u32 dtim_interval = vif->bss_conf.dtim_period *
2850                 vif->bss_conf.beacon_int;
2851         u32 req_dur, delay;
2852         struct iwl_hs20_roc_req aux_roc_req = {
2853                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2854                 .id_and_color =
2855                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2856                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2857                 /* Set the channel info data */
2858                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2859                         PHY_BAND_24 : PHY_BAND_5,
2860                 .channel_info.channel = channel->hw_value,
2861                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2862                 /* Set the time and duration */
2863                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2864          };
2865
2866         delay = AUX_ROC_MIN_DELAY;
2867         req_dur = MSEC_TO_TU(duration);
2868
2869         /*
2870          * If we are associated we want the delay time to be at least one
2871          * dtim interval so that the FW can wait until after the DTIM and
2872          * then start the time event, this will potentially allow us to
2873          * remain off-channel for the max duration.
2874          * Since we want to use almost a whole dtim interval we would also
2875          * like the delay to be for 2-3 dtim intervals, in case there are
2876          * other time events with higher priority.
2877          */
2878         if (vif->bss_conf.assoc) {
2879                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2880                 /* We cannot remain off-channel longer than the DTIM interval */
2881                 if (dtim_interval <= req_dur) {
2882                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2883                         if (req_dur <= AUX_ROC_MIN_DURATION)
2884                                 req_dur = dtim_interval -
2885                                         AUX_ROC_MIN_SAFETY_BUFFER;
2886                 }
2887         }
2888
2889         aux_roc_req.duration = cpu_to_le32(req_dur);
2890         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2891
2892         IWL_DEBUG_TE(mvm,
2893                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2894                      channel->hw_value, req_dur, duration, delay,
2895                      dtim_interval);
2896         /* Set the node address */
2897         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2898
2899         lockdep_assert_held(&mvm->mutex);
2900
2901         spin_lock_bh(&mvm->time_event_lock);
2902
2903         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2904                 spin_unlock_bh(&mvm->time_event_lock);
2905                 return -EIO;
2906         }
2907
2908         te_data->vif = vif;
2909         te_data->duration = duration;
2910         te_data->id = HOT_SPOT_CMD;
2911
2912         spin_unlock_bh(&mvm->time_event_lock);
2913
2914         /*
2915          * Use a notification wait, which really just processes the
2916          * command response and doesn't wait for anything, in order
2917          * to be able to process the response and get the UID inside
2918          * the RX path. Using CMD_WANT_SKB doesn't work because it
2919          * stores the buffer and then wakes up this thread, by which
2920          * time another notification (that the time event started)
2921          * might already be processed unsuccessfully.
2922          */
2923         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2924                                    time_event_response,
2925                                    ARRAY_SIZE(time_event_response),
2926                                    iwl_mvm_rx_aux_roc, te_data);
2927
2928         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2929                                    &aux_roc_req);
2930
2931         if (res) {
2932                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2933                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2934                 goto out_clear_te;
2935         }
2936
2937         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2938         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2939         /* should never fail */
2940         WARN_ON_ONCE(res);
2941
2942         if (res) {
2943  out_clear_te:
2944                 spin_lock_bh(&mvm->time_event_lock);
2945                 iwl_mvm_te_clear_data(mvm, te_data);
2946                 spin_unlock_bh(&mvm->time_event_lock);
2947         }
2948
2949         return res;
2950 }
2951
2952 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2953                        struct ieee80211_vif *vif,
2954                        struct ieee80211_channel *channel,
2955                        int duration,
2956                        enum ieee80211_roc_type type)
2957 {
2958         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2959         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2960         struct cfg80211_chan_def chandef;
2961         struct iwl_mvm_phy_ctxt *phy_ctxt;
2962         int ret, i;
2963
2964         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2965                            duration, type);
2966
2967         flush_work(&mvm->roc_done_wk);
2968
2969         mutex_lock(&mvm->mutex);
2970
2971         switch (vif->type) {
2972         case NL80211_IFTYPE_STATION:
2973                 if (fw_has_capa(&mvm->fw->ucode_capa,
2974                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2975                         /* Use aux roc framework (HS20) */
2976                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2977                                                        vif, duration);
2978                         goto out_unlock;
2979                 }
2980                 IWL_ERR(mvm, "hotspot not supported\n");
2981                 ret = -EINVAL;
2982                 goto out_unlock;
2983         case NL80211_IFTYPE_P2P_DEVICE:
2984                 /* handle below */
2985                 break;
2986         default:
2987                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2988                 ret = -EINVAL;
2989                 goto out_unlock;
2990         }
2991
2992         for (i = 0; i < NUM_PHY_CTX; i++) {
2993                 phy_ctxt = &mvm->phy_ctxts[i];
2994                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2995                         continue;
2996
2997                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2998                         /*
2999                          * Unbind the P2P_DEVICE from the current PHY context,
3000                          * and if the PHY context is not used remove it.
3001                          */
3002                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3003                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3004                                 goto out_unlock;
3005
3006                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3007
3008                         /* Bind the P2P_DEVICE to the current PHY Context */
3009                         mvmvif->phy_ctxt = phy_ctxt;
3010
3011                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3012                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3013                                 goto out_unlock;
3014
3015                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3016                         goto schedule_time_event;
3017                 }
3018         }
3019
3020         /* Need to update the PHY context only if the ROC channel changed */
3021         if (channel == mvmvif->phy_ctxt->channel)
3022                 goto schedule_time_event;
3023
3024         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3025
3026         /*
3027          * Change the PHY context configuration as it is currently referenced
3028          * only by the P2P Device MAC
3029          */
3030         if (mvmvif->phy_ctxt->ref == 1) {
3031                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3032                                                &chandef, 1, 1);
3033                 if (ret)
3034                         goto out_unlock;
3035         } else {
3036                 /*
3037                  * The PHY context is shared with other MACs. Need to remove the
3038                  * P2P Device from the binding, allocate an new PHY context and
3039                  * create a new binding
3040                  */
3041                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3042                 if (!phy_ctxt) {
3043                         ret = -ENOSPC;
3044                         goto out_unlock;
3045                 }
3046
3047                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3048                                                1, 1);
3049                 if (ret) {
3050                         IWL_ERR(mvm, "Failed to change PHY context\n");
3051                         goto out_unlock;
3052                 }
3053
3054                 /* Unbind the P2P_DEVICE from the current PHY context */
3055                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3056                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3057                         goto out_unlock;
3058
3059                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3060
3061                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3062                 mvmvif->phy_ctxt = phy_ctxt;
3063
3064                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3065                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3066                         goto out_unlock;
3067
3068                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3069         }
3070
3071 schedule_time_event:
3072         /* Schedule the time events */
3073         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3074
3075 out_unlock:
3076         mutex_unlock(&mvm->mutex);
3077         IWL_DEBUG_MAC80211(mvm, "leave\n");
3078         return ret;
3079 }
3080
3081 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3082 {
3083         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3084
3085         IWL_DEBUG_MAC80211(mvm, "enter\n");
3086
3087         mutex_lock(&mvm->mutex);
3088         iwl_mvm_stop_roc(mvm);
3089         mutex_unlock(&mvm->mutex);
3090
3091         IWL_DEBUG_MAC80211(mvm, "leave\n");
3092         return 0;
3093 }
3094
3095 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3096                                  struct ieee80211_chanctx_conf *ctx)
3097 {
3098         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3099         struct iwl_mvm_phy_ctxt *phy_ctxt;
3100         int ret;
3101
3102         lockdep_assert_held(&mvm->mutex);
3103
3104         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3105
3106         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3107         if (!phy_ctxt) {
3108                 ret = -ENOSPC;
3109                 goto out;
3110         }
3111
3112         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3113                                        ctx->rx_chains_static,
3114                                        ctx->rx_chains_dynamic);
3115         if (ret) {
3116                 IWL_ERR(mvm, "Failed to add PHY context\n");
3117                 goto out;
3118         }
3119
3120         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3121         *phy_ctxt_id = phy_ctxt->id;
3122 out:
3123         return ret;
3124 }
3125
3126 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3127                                struct ieee80211_chanctx_conf *ctx)
3128 {
3129         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3130         int ret;
3131
3132         mutex_lock(&mvm->mutex);
3133         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3134         mutex_unlock(&mvm->mutex);
3135
3136         return ret;
3137 }
3138
3139 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3140                                      struct ieee80211_chanctx_conf *ctx)
3141 {
3142         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3143         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3144
3145         lockdep_assert_held(&mvm->mutex);
3146
3147         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3148 }
3149
3150 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3151                                    struct ieee80211_chanctx_conf *ctx)
3152 {
3153         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3154
3155         mutex_lock(&mvm->mutex);
3156         __iwl_mvm_remove_chanctx(mvm, ctx);
3157         mutex_unlock(&mvm->mutex);
3158 }
3159
3160 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3161                                    struct ieee80211_chanctx_conf *ctx,
3162                                    u32 changed)
3163 {
3164         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3165         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3166         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3167
3168         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3169                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3170                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3171                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3172                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3173                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3174                       phy_ctxt->ref, changed))
3175                 return;
3176
3177         mutex_lock(&mvm->mutex);
3178         iwl_mvm_bt_coex_vif_change(mvm);
3179         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3180                                  ctx->rx_chains_static,
3181                                  ctx->rx_chains_dynamic);
3182         mutex_unlock(&mvm->mutex);
3183 }
3184
3185 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3186                                         struct ieee80211_vif *vif,
3187                                         struct ieee80211_chanctx_conf *ctx,
3188                                         bool switching_chanctx)
3189 {
3190         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3191         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3192         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3193         int ret;
3194
3195         lockdep_assert_held(&mvm->mutex);
3196
3197         mvmvif->phy_ctxt = phy_ctxt;
3198
3199         switch (vif->type) {
3200         case NL80211_IFTYPE_AP:
3201                 /* only needed if we're switching chanctx (i.e. during CSA) */
3202                 if (switching_chanctx) {
3203                         mvmvif->ap_ibss_active = true;
3204                         break;
3205                 }
3206         case NL80211_IFTYPE_ADHOC:
3207                 /*
3208                  * The AP binding flow is handled as part of the start_ap flow
3209                  * (in bss_info_changed), similarly for IBSS.
3210                  */
3211                 ret = 0;
3212                 goto out;
3213         case NL80211_IFTYPE_STATION:
3214                 break;
3215         case NL80211_IFTYPE_MONITOR:
3216                 /* always disable PS when a monitor interface is active */
3217                 mvmvif->ps_disabled = true;
3218                 break;
3219         default:
3220                 ret = -EINVAL;
3221                 goto out;
3222         }
3223
3224         ret = iwl_mvm_binding_add_vif(mvm, vif);
3225         if (ret)
3226                 goto out;
3227
3228         /*
3229          * Power state must be updated before quotas,
3230          * otherwise fw will complain.
3231          */
3232         iwl_mvm_power_update_mac(mvm);
3233
3234         /* Setting the quota at this stage is only required for monitor
3235          * interfaces. For the other types, the bss_info changed flow
3236          * will handle quota settings.
3237          */
3238         if (vif->type == NL80211_IFTYPE_MONITOR) {
3239                 mvmvif->monitor_active = true;
3240                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3241                 if (ret)
3242                         goto out_remove_binding;
3243
3244                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3245                 if (ret)
3246                         goto out_remove_binding;
3247
3248         }
3249
3250         /* Handle binding during CSA */
3251         if (vif->type == NL80211_IFTYPE_AP) {
3252                 iwl_mvm_update_quotas(mvm, false, NULL);
3253                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3254         }
3255
3256         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3257                 u32 duration = 2 * vif->bss_conf.beacon_int;
3258
3259                 /* iwl_mvm_protect_session() reads directly from the
3260                  * device (the system time), so make sure it is
3261                  * available.
3262                  */
3263                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3264                 if (ret)
3265                         goto out_remove_binding;
3266
3267                 /* Protect the session to make sure we hear the first
3268                  * beacon on the new channel.
3269                  */
3270                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3271                                         vif->bss_conf.beacon_int / 2,
3272                                         true);
3273
3274                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3275
3276                 iwl_mvm_update_quotas(mvm, false, NULL);
3277         }
3278
3279         goto out;
3280
3281 out_remove_binding:
3282         iwl_mvm_binding_remove_vif(mvm, vif);
3283         iwl_mvm_power_update_mac(mvm);
3284 out:
3285         if (ret)
3286                 mvmvif->phy_ctxt = NULL;
3287         return ret;
3288 }
3289 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3290                                       struct ieee80211_vif *vif,
3291                                       struct ieee80211_chanctx_conf *ctx)
3292 {
3293         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3294         int ret;
3295
3296         mutex_lock(&mvm->mutex);
3297         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3298         mutex_unlock(&mvm->mutex);
3299
3300         return ret;
3301 }
3302
3303 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3304                                            struct ieee80211_vif *vif,
3305                                            struct ieee80211_chanctx_conf *ctx,
3306                                            bool switching_chanctx)
3307 {
3308         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3309         struct ieee80211_vif *disabled_vif = NULL;
3310
3311         lockdep_assert_held(&mvm->mutex);
3312
3313         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3314
3315         switch (vif->type) {
3316         case NL80211_IFTYPE_ADHOC:
3317                 goto out;
3318         case NL80211_IFTYPE_MONITOR:
3319                 mvmvif->monitor_active = false;
3320                 mvmvif->ps_disabled = false;
3321                 iwl_mvm_rm_snif_sta(mvm, vif);
3322                 break;
3323         case NL80211_IFTYPE_AP:
3324                 /* This part is triggered only during CSA */
3325                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3326                         goto out;
3327
3328                 mvmvif->csa_countdown = false;
3329
3330                 /* Set CS bit on all the stations */
3331                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3332
3333                 /* Save blocked iface, the timeout is set on the next beacon */
3334                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3335
3336                 mvmvif->ap_ibss_active = false;
3337                 break;
3338         case NL80211_IFTYPE_STATION:
3339                 if (!switching_chanctx)
3340                         break;
3341
3342                 disabled_vif = vif;
3343
3344                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3345                 break;
3346         default:
3347                 break;
3348         }
3349
3350         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3351         iwl_mvm_binding_remove_vif(mvm, vif);
3352
3353 out:
3354         mvmvif->phy_ctxt = NULL;
3355         iwl_mvm_power_update_mac(mvm);
3356 }
3357
3358 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3359                                          struct ieee80211_vif *vif,
3360                                          struct ieee80211_chanctx_conf *ctx)
3361 {
3362         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3363
3364         mutex_lock(&mvm->mutex);
3365         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3366         mutex_unlock(&mvm->mutex);
3367 }
3368
3369 static int
3370 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3371                                 struct ieee80211_vif_chanctx_switch *vifs)
3372 {
3373         int ret;
3374
3375         mutex_lock(&mvm->mutex);
3376         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3377         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3378
3379         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3380         if (ret) {
3381                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3382                 goto out_reassign;
3383         }
3384
3385         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3386                                            true);
3387         if (ret) {
3388                 IWL_ERR(mvm,
3389                         "failed to assign new_ctx during channel switch\n");
3390                 goto out_remove;
3391         }
3392
3393         /* we don't support TDLS during DCM - can be caused by channel switch */
3394         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3395                 iwl_mvm_teardown_tdls_peers(mvm);
3396
3397         goto out;
3398
3399 out_remove:
3400         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3401
3402 out_reassign:
3403         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3404                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3405                 goto out_restart;
3406         }
3407
3408         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3409                                          true)) {
3410                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3411                 goto out_restart;
3412         }
3413
3414         goto out;
3415
3416 out_restart:
3417         /* things keep failing, better restart the hw */
3418         iwl_mvm_nic_restart(mvm, false);
3419
3420 out:
3421         mutex_unlock(&mvm->mutex);
3422
3423         return ret;
3424 }
3425
3426 static int
3427 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3428                                     struct ieee80211_vif_chanctx_switch *vifs)
3429 {
3430         int ret;
3431
3432         mutex_lock(&mvm->mutex);
3433         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3434
3435         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3436                                            true);
3437         if (ret) {
3438                 IWL_ERR(mvm,
3439                         "failed to assign new_ctx during channel switch\n");
3440                 goto out_reassign;
3441         }
3442
3443         goto out;
3444
3445 out_reassign:
3446         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3447                                          true)) {
3448                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3449                 goto out_restart;
3450         }
3451
3452         goto out;
3453
3454 out_restart:
3455         /* things keep failing, better restart the hw */
3456         iwl_mvm_nic_restart(mvm, false);
3457
3458 out:
3459         mutex_unlock(&mvm->mutex);
3460
3461         return ret;
3462 }
3463
3464 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3465                                       struct ieee80211_vif_chanctx_switch *vifs,
3466                                       int n_vifs,
3467                                       enum ieee80211_chanctx_switch_mode mode)
3468 {
3469         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3470         int ret;
3471
3472         /* we only support a single-vif right now */
3473         if (n_vifs > 1)
3474                 return -EOPNOTSUPP;
3475
3476         switch (mode) {
3477         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3478                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3479                 break;
3480         case CHANCTX_SWMODE_REASSIGN_VIF:
3481                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3482                 break;
3483         default:
3484                 ret = -EOPNOTSUPP;
3485                 break;
3486         }
3487
3488         return ret;
3489 }
3490
3491 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3492                            struct ieee80211_sta *sta,
3493                            bool set)
3494 {
3495         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3496         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3497
3498         if (!mvm_sta || !mvm_sta->vif) {
3499                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3500                 return -EINVAL;
3501         }
3502
3503         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3504 }
3505
3506 #ifdef CONFIG_NL80211_TESTMODE
3507 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3508         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3509         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3510         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3511 };
3512
3513 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3514                                       struct ieee80211_vif *vif,
3515                                       void *data, int len)
3516 {
3517         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3518         int err;
3519         u32 noa_duration;
3520
3521         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3522         if (err)
3523                 return err;
3524
3525         if (!tb[IWL_MVM_TM_ATTR_CMD])
3526                 return -EINVAL;
3527
3528         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3529         case IWL_MVM_TM_CMD_SET_NOA:
3530                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3531                     !vif->bss_conf.enable_beacon ||
3532                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3533                         return -EINVAL;
3534
3535                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3536                 if (noa_duration >= vif->bss_conf.beacon_int)
3537                         return -EINVAL;
3538
3539                 mvm->noa_duration = noa_duration;
3540                 mvm->noa_vif = vif;
3541
3542                 return iwl_mvm_update_quotas(mvm, false, NULL);
3543         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3544                 /* must be associated client vif - ignore authorized */
3545                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3546                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3547                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3548                         return -EINVAL;
3549
3550                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3551                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3552                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3553         }
3554
3555         return -EOPNOTSUPP;
3556 }
3557
3558 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3559                                     struct ieee80211_vif *vif,
3560                                     void *data, int len)
3561 {
3562         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3563         int err;
3564
3565         mutex_lock(&mvm->mutex);
3566         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3567         mutex_unlock(&mvm->mutex);
3568
3569         return err;
3570 }
3571 #endif
3572
3573 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3574                                    struct ieee80211_vif *vif,
3575                                    struct ieee80211_channel_switch *chsw)
3576 {
3577         /* By implementing this operation, we prevent mac80211 from
3578          * starting its own channel switch timer, so that we can call
3579          * ieee80211_chswitch_done() ourselves at the right time
3580          * (which is when the absence time event starts).
3581          */
3582
3583         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3584                            "dummy channel switch op\n");
3585 }
3586
3587 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3588                                       struct ieee80211_vif *vif,
3589                                       struct ieee80211_channel_switch *chsw)
3590 {
3591         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3592         struct ieee80211_vif *csa_vif;
3593         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3594         u32 apply_time;
3595         int ret;
3596
3597         mutex_lock(&mvm->mutex);
3598
3599         mvmvif->csa_failed = false;
3600
3601         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3602                            chsw->chandef.center_freq1);
3603
3604         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3605
3606         switch (vif->type) {
3607         case NL80211_IFTYPE_AP:
3608                 csa_vif =
3609                         rcu_dereference_protected(mvm->csa_vif,
3610                                                   lockdep_is_held(&mvm->mutex));
3611                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3612                               "Another CSA is already in progress")) {
3613                         ret = -EBUSY;
3614                         goto out_unlock;
3615                 }
3616
3617                 rcu_assign_pointer(mvm->csa_vif, vif);
3618
3619                 if (WARN_ONCE(mvmvif->csa_countdown,
3620                               "Previous CSA countdown didn't complete")) {
3621                         ret = -EBUSY;
3622                         goto out_unlock;
3623                 }
3624
3625                 break;
3626         case NL80211_IFTYPE_STATION:
3627                 /* Schedule the time event to a bit before beacon 1,
3628                  * to make sure we're in the new channel when the
3629                  * GO/AP arrives.
3630                  */
3631                 apply_time = chsw->device_timestamp +
3632                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3633                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3634
3635                 if (chsw->block_tx)
3636                         iwl_mvm_csa_client_absent(mvm, vif);
3637
3638                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3639                                             apply_time);
3640                 if (mvmvif->bf_data.bf_enabled) {
3641                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3642                         if (ret)
3643                                 goto out_unlock;
3644                 }
3645
3646                 break;
3647         default:
3648                 break;
3649         }
3650
3651         mvmvif->ps_disabled = true;
3652
3653         ret = iwl_mvm_power_update_ps(mvm);
3654         if (ret)
3655                 goto out_unlock;
3656
3657         /* we won't be on this channel any longer */
3658         iwl_mvm_teardown_tdls_peers(mvm);
3659
3660 out_unlock:
3661         mutex_unlock(&mvm->mutex);
3662
3663         return ret;
3664 }
3665
3666 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3667                                        struct ieee80211_vif *vif)
3668 {
3669         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3670         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3671         int ret;
3672
3673         mutex_lock(&mvm->mutex);
3674
3675         if (mvmvif->csa_failed) {
3676                 mvmvif->csa_failed = false;
3677                 ret = -EIO;
3678                 goto out_unlock;
3679         }
3680
3681         if (vif->type == NL80211_IFTYPE_STATION) {
3682                 struct iwl_mvm_sta *mvmsta;
3683
3684                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3685                                                           mvmvif->ap_sta_id);
3686
3687                 if (WARN_ON(!mvmsta)) {
3688                         ret = -EIO;
3689                         goto out_unlock;
3690                 }
3691
3692                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3693
3694                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3695
3696                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3697                 if (ret)
3698                         goto out_unlock;
3699
3700                 iwl_mvm_stop_session_protection(mvm, vif);
3701         }
3702
3703         mvmvif->ps_disabled = false;
3704
3705         ret = iwl_mvm_power_update_ps(mvm);
3706
3707 out_unlock:
3708         mutex_unlock(&mvm->mutex);
3709
3710         return ret;
3711 }
3712
3713 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3714                               struct ieee80211_vif *vif, u32 queues, bool drop)
3715 {
3716         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3717         struct iwl_mvm_vif *mvmvif;
3718         struct iwl_mvm_sta *mvmsta;
3719         struct ieee80211_sta *sta;
3720         int i;
3721         u32 msk = 0;
3722
3723         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3724                 return;
3725
3726         mutex_lock(&mvm->mutex);
3727         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3728
3729         /* flush the AP-station and all TDLS peers */
3730         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3731                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3732                                                 lockdep_is_held(&mvm->mutex));
3733                 if (IS_ERR_OR_NULL(sta))
3734                         continue;
3735
3736                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3737                 if (mvmsta->vif != vif)
3738                         continue;
3739
3740                 /* make sure only TDLS peers or the AP are flushed */
3741                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3742
3743                 msk |= mvmsta->tfd_queue_msk;
3744         }
3745
3746         if (drop) {
3747                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3748                         IWL_ERR(mvm, "flush request fail\n");
3749                 mutex_unlock(&mvm->mutex);
3750         } else {
3751                 mutex_unlock(&mvm->mutex);
3752
3753                 /* this can take a while, and we may need/want other operations
3754                  * to succeed while doing this, so do it without the mutex held
3755                  */
3756                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3757         }
3758 }
3759
3760 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3761                                   struct survey_info *survey)
3762 {
3763         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3764         int ret;
3765
3766         memset(survey, 0, sizeof(*survey));
3767
3768         /* only support global statistics right now */
3769         if (idx != 0)
3770                 return -ENOENT;
3771
3772         if (fw_has_capa(&mvm->fw->ucode_capa,
3773                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3774                 return -ENOENT;
3775
3776         mutex_lock(&mvm->mutex);
3777
3778         if (mvm->ucode_loaded) {
3779                 ret = iwl_mvm_request_statistics(mvm, false);
3780                 if (ret)
3781                         goto out;
3782         }
3783
3784         survey->filled = SURVEY_INFO_TIME |
3785                          SURVEY_INFO_TIME_RX |
3786                          SURVEY_INFO_TIME_TX |
3787                          SURVEY_INFO_TIME_SCAN;
3788         survey->time = mvm->accu_radio_stats.on_time_rf +
3789                        mvm->radio_stats.on_time_rf;
3790         do_div(survey->time, USEC_PER_MSEC);
3791
3792         survey->time_rx = mvm->accu_radio_stats.rx_time +
3793                           mvm->radio_stats.rx_time;
3794         do_div(survey->time_rx, USEC_PER_MSEC);
3795
3796         survey->time_tx = mvm->accu_radio_stats.tx_time +
3797                           mvm->radio_stats.tx_time;
3798         do_div(survey->time_tx, USEC_PER_MSEC);
3799
3800         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3801                             mvm->radio_stats.on_time_scan;
3802         do_div(survey->time_scan, USEC_PER_MSEC);
3803
3804         ret = 0;
3805  out:
3806         mutex_unlock(&mvm->mutex);
3807         return ret;
3808 }
3809
3810 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3811                                        struct ieee80211_vif *vif,
3812                                        struct ieee80211_sta *sta,
3813                                        struct station_info *sinfo)
3814 {
3815         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3816         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3817         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3818
3819         if (fw_has_capa(&mvm->fw->ucode_capa,
3820                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3821                 return;
3822
3823         /* if beacon filtering isn't on mac80211 does it anyway */
3824         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3825                 return;
3826
3827         if (!vif->bss_conf.assoc)
3828                 return;
3829
3830         mutex_lock(&mvm->mutex);
3831
3832         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3833                 goto unlock;
3834
3835         if (iwl_mvm_request_statistics(mvm, false))
3836                 goto unlock;
3837
3838         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3839                            mvmvif->beacon_stats.accu_num_beacons;
3840         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3841         if (mvmvif->beacon_stats.avg_signal) {
3842                 /* firmware only reports a value after RXing a few beacons */
3843                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3844                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3845         }
3846  unlock:
3847         mutex_unlock(&mvm->mutex);
3848 }
3849
3850 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3851                                         struct ieee80211_vif *vif,
3852                                         const struct ieee80211_event *event)
3853 {
3854 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3855         do {                                                    \
3856                 if ((_cnt) && --(_cnt))                         \
3857                         break;                                  \
3858                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3859         } while (0)
3860
3861         struct iwl_fw_dbg_trigger_tlv *trig;
3862         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3863
3864         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3865                 return;
3866
3867         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3868         trig_mlme = (void *)trig->data;
3869         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3870                 return;
3871
3872         if (event->u.mlme.data == ASSOC_EVENT) {
3873                 if (event->u.mlme.status == MLME_DENIED)
3874                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3875                                            trig_mlme->stop_assoc_denied,
3876                                            "DENIED ASSOC: reason %d",
3877                                             event->u.mlme.reason);
3878                 else if (event->u.mlme.status == MLME_TIMEOUT)
3879                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3880                                            trig_mlme->stop_assoc_timeout,
3881                                            "ASSOC TIMEOUT");
3882         } else if (event->u.mlme.data == AUTH_EVENT) {
3883                 if (event->u.mlme.status == MLME_DENIED)
3884                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3885                                            trig_mlme->stop_auth_denied,
3886                                            "DENIED AUTH: reason %d",
3887                                            event->u.mlme.reason);
3888                 else if (event->u.mlme.status == MLME_TIMEOUT)
3889                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3890                                            trig_mlme->stop_auth_timeout,
3891                                            "AUTH TIMEOUT");
3892         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3893                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3894                                    trig_mlme->stop_rx_deauth,
3895                                    "DEAUTH RX %d", event->u.mlme.reason);
3896         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3897                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3898                                    trig_mlme->stop_tx_deauth,
3899                                    "DEAUTH TX %d", event->u.mlme.reason);
3900         }
3901 #undef CHECK_MLME_TRIGGER
3902 }
3903
3904 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3905                                           struct ieee80211_vif *vif,
3906                                           const struct ieee80211_event *event)
3907 {
3908         struct iwl_fw_dbg_trigger_tlv *trig;
3909         struct iwl_fw_dbg_trigger_ba *ba_trig;
3910
3911         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3912                 return;
3913
3914         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3915         ba_trig = (void *)trig->data;
3916         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3917                 return;
3918
3919         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3920                 return;
3921
3922         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3923                                     "BAR received from %pM, tid %d, ssn %d",
3924                                     event->u.ba.sta->addr, event->u.ba.tid,
3925                                     event->u.ba.ssn);
3926 }
3927
3928 static void
3929 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3930                                      struct ieee80211_vif *vif,
3931                                      const struct ieee80211_event *event)
3932 {
3933         struct iwl_fw_dbg_trigger_tlv *trig;
3934         struct iwl_fw_dbg_trigger_ba *ba_trig;
3935
3936         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3937                 return;
3938
3939         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3940         ba_trig = (void *)trig->data;
3941         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3942                 return;
3943
3944         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3945                 return;
3946
3947         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3948                                     "Frame from %pM timed out, tid %d",
3949                                     event->u.ba.sta->addr, event->u.ba.tid);
3950 }
3951
3952 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3953                                        struct ieee80211_vif *vif,
3954                                        const struct ieee80211_event *event)
3955 {
3956         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3957
3958         switch (event->type) {
3959         case MLME_EVENT:
3960                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3961                 break;
3962         case BAR_RX_EVENT:
3963                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3964                 break;
3965         case BA_FRAME_TIMEOUT:
3966                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3967                 break;
3968         default:
3969                 break;
3970         }
3971 }
3972
3973 const struct ieee80211_ops iwl_mvm_hw_ops = {
3974         .tx = iwl_mvm_mac_tx,
3975         .ampdu_action = iwl_mvm_mac_ampdu_action,
3976         .start = iwl_mvm_mac_start,
3977         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3978         .stop = iwl_mvm_mac_stop,
3979         .add_interface = iwl_mvm_mac_add_interface,
3980         .remove_interface = iwl_mvm_mac_remove_interface,
3981         .config = iwl_mvm_mac_config,
3982         .prepare_multicast = iwl_mvm_prepare_multicast,
3983         .configure_filter = iwl_mvm_configure_filter,
3984         .config_iface_filter = iwl_mvm_config_iface_filter,
3985         .bss_info_changed = iwl_mvm_bss_info_changed,
3986         .hw_scan = iwl_mvm_mac_hw_scan,
3987         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3988         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3989         .sta_state = iwl_mvm_mac_sta_state,
3990         .sta_notify = iwl_mvm_mac_sta_notify,
3991         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3992         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3993         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3994         .sta_rc_update = iwl_mvm_sta_rc_update,
3995         .conf_tx = iwl_mvm_mac_conf_tx,
3996         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3997         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3998         .flush = iwl_mvm_mac_flush,
3999         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4000         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4001         .set_key = iwl_mvm_mac_set_key,
4002         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4003         .remain_on_channel = iwl_mvm_roc,
4004         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4005         .add_chanctx = iwl_mvm_add_chanctx,
4006         .remove_chanctx = iwl_mvm_remove_chanctx,
4007         .change_chanctx = iwl_mvm_change_chanctx,
4008         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4009         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4010         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4011
4012         .start_ap = iwl_mvm_start_ap_ibss,
4013         .stop_ap = iwl_mvm_stop_ap_ibss,
4014         .join_ibss = iwl_mvm_start_ap_ibss,
4015         .leave_ibss = iwl_mvm_stop_ap_ibss,
4016
4017         .set_tim = iwl_mvm_set_tim,
4018
4019         .channel_switch = iwl_mvm_channel_switch,
4020         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4021         .post_channel_switch = iwl_mvm_post_channel_switch,
4022
4023         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4024         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4025         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4026
4027         .event_callback = iwl_mvm_mac_event_callback,
4028
4029         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4030
4031 #ifdef CONFIG_PM_SLEEP
4032         /* look at d3.c */
4033         .suspend = iwl_mvm_suspend,
4034         .resume = iwl_mvm_resume,
4035         .set_wakeup = iwl_mvm_set_wakeup,
4036         .set_rekey_data = iwl_mvm_set_rekey_data,
4037 #if IS_ENABLED(CONFIG_IPV6)
4038         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4039 #endif
4040         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4041 #endif
4042         .get_survey = iwl_mvm_mac_get_survey,
4043         .sta_statistics = iwl_mvm_mac_sta_statistics,
4044 };