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  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
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  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
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  29  *  Intel Linux Wireless <linuxwifi@intel.com>
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  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
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  39  * modification, are permitted provided that the following conditions
  40  * are met:
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  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/kernel.h>
  66 #include <linux/slab.h>
  67 #include <linux/skbuff.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/ip.h>
  71 #include <linux/if_arp.h>
  72 #include <linux/devcoredump.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-csr.h"
  89 #include "iwl-nvm-parse.h"
  90 #include "fw-dbg.h"
  91
  92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_STATION),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_AP) |
 100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 101                         BIT(NL80211_IFTYPE_P2P_GO),
 102         },
 103         {
 104                 .max = 1,
 105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 106         },
 107 };
 108
 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 110         {
 111                 .num_different_channels = 2,
 112                 .max_interfaces = 3,
 113                 .limits = iwl_mvm_limits,
 114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 115         },
 116 };
 117
 118 #ifdef CONFIG_PM_SLEEP
 119 static const struct nl80211_wowlan_tcp_data_token_feature
 120 iwl_mvm_wowlan_tcp_token_feature = {
 121         .min_len = 0,
 122         .max_len = 255,
 123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 124 };
 125
 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 129                             sizeof(struct ethhdr) -
 130                             sizeof(struct iphdr) -
 131                             sizeof(struct tcphdr),
 132         .data_interval_max = 65535, /* __le16 in API */
 133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 134                             sizeof(struct ethhdr) -
 135                             sizeof(struct iphdr) -
 136                             sizeof(struct tcphdr),
 137         .seq = true,
 138 };
 139 #endif
 140
 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 142 /*
 143  * Use the reserved field to indicate magic values.
 144  * these values will only be used internally by the driver,
 145  * and won't make it to the fw (reserved will be 0).
 146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 147  *      be the vif's ip address. in case there is not a single
 148  *      ip address (0, or more than 1), this attribute will
 149  *      be skipped.
 150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 151  *      the LSB bytes of the vif's mac address
 152  */
 153 enum {
 154         BC_FILTER_MAGIC_NONE = 0,
 155         BC_FILTER_MAGIC_IP,
 156         BC_FILTER_MAGIC_MAC,
 157 };
 158
 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 160         {
 161                 /* arp */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 164                 .attrs = {
 165                         {
 166                                 /* frame type - arp, hw type - ethernet */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header),
 170                                 .val = cpu_to_be32(0x08060001),
 171                                 .mask = cpu_to_be32(0xffffffff),
 172                         },
 173                         {
 174                                 /* arp dest ip */
 175                                 .offset_type =
 176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 177                                 .offset = sizeof(rfc1042_header) + 2 +
 178                                           sizeof(struct arphdr) +
 179                                           ETH_ALEN + sizeof(__be32) +
 180                                           ETH_ALEN,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 184                         },
 185                 },
 186         },
 187         {
 188                 /* dhcp offer bcast */
 189                 .discard = 0,
 190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 191                 .attrs = {
 192                         {
 193                                 /* udp dest port - 68 (bootp client)*/
 194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 195                                 .offset = offsetof(struct udphdr, dest),
 196                                 .val = cpu_to_be32(0x00440000),
 197                                 .mask = cpu_to_be32(0xffff0000),
 198                         },
 199                         {
 200                                 /* dhcp - lsb bytes of client hw address */
 201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 202                                 .offset = 38,
 203                                 .mask = cpu_to_be32(0xffffffff),
 204                                 /* mark it as special field */
 205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 206                         },
 207                 },
 208         },
 209         /* last filter must be empty */
 210         {},
 211 };
 212 #endif
 213
 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 215 {
 216         if (!iwl_mvm_is_d0i3_supported(mvm))
 217                 return;
 218
 219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 220         spin_lock_bh(&mvm->refs_lock);
 221         mvm->refs[ref_type]++;
 222         spin_unlock_bh(&mvm->refs_lock);
 223         iwl_trans_ref(mvm->trans);
 224 }
 225
 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 227 {
 228         if (!iwl_mvm_is_d0i3_supported(mvm))
 229                 return;
 230
 231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 232         spin_lock_bh(&mvm->refs_lock);
 233         WARN_ON(!mvm->refs[ref_type]--);
 234         spin_unlock_bh(&mvm->refs_lock);
 235         iwl_trans_unref(mvm->trans);
 236 }
 237
 238 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 239                                      enum iwl_mvm_ref_type except_ref)
 240 {
 241         int i, j;
 242
 243         if (!iwl_mvm_is_d0i3_supported(mvm))
 244                 return;
 245
 246         spin_lock_bh(&mvm->refs_lock);
 247         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 248                 if (except_ref == i || !mvm->refs[i])
 249                         continue;
 250
 251                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 252                               i, mvm->refs[i]);
 253                 for (j = 0; j < mvm->refs[i]; j++)
 254                         iwl_trans_unref(mvm->trans);
 255                 mvm->refs[i] = 0;
 256         }
 257         spin_unlock_bh(&mvm->refs_lock);
 258 }
 259
 260 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 261 {
 262         int i;
 263         bool taken = false;
 264
 265         if (!iwl_mvm_is_d0i3_supported(mvm))
 266                 return true;
 267
 268         spin_lock_bh(&mvm->refs_lock);
 269         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 270                 if (mvm->refs[i]) {
 271                         taken = true;
 272                         break;
 273                 }
 274         }
 275         spin_unlock_bh(&mvm->refs_lock);
 276
 277         return taken;
 278 }
 279
 280 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 281 {
 282         iwl_mvm_ref(mvm, ref_type);
 283
 284         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 285                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 286                                 HZ)) {
 287                 WARN_ON_ONCE(1);
 288                 iwl_mvm_unref(mvm, ref_type);
 289                 return -EIO;
 290         }
 291
 292         return 0;
 293 }
 294
 295 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 296 {
 297         int i;
 298
 299         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 300         for (i = 0; i < NUM_PHY_CTX; i++) {
 301                 mvm->phy_ctxts[i].id = i;
 302                 mvm->phy_ctxts[i].ref = 0;
 303         }
 304 }
 305
 306 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 307                                                   const char *alpha2,
 308                                                   enum iwl_mcc_source src_id,
 309                                                   bool *changed)
 310 {
 311         struct ieee80211_regdomain *regd = NULL;
 312         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 313         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 314         struct iwl_mcc_update_resp *resp;
 315
 316         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 317
 318         lockdep_assert_held(&mvm->mutex);
 319
 320         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 321         if (IS_ERR_OR_NULL(resp)) {
 322                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 323                               PTR_ERR_OR_ZERO(resp));
 324                 goto out;
 325         }
 326
 327         if (changed)
 328                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 329
 330         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 331                                       __le32_to_cpu(resp->n_channels),
 332                                       resp->channels,
 333                                       __le16_to_cpu(resp->mcc));
 334         /* Store the return source id */
 335         src_id = resp->source_id;
 336         kfree(resp);
 337         if (IS_ERR_OR_NULL(regd)) {
 338                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 339                               PTR_ERR_OR_ZERO(regd));
 340                 goto out;
 341         }
 342
 343         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 344                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 345         mvm->lar_regdom_set = true;
 346         mvm->mcc_src = src_id;
 347
 348 out:
 349         return regd;
 350 }
 351
 352 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 353 {
 354         bool changed;
 355         struct ieee80211_regdomain *regd;
 356
 357         if (!iwl_mvm_is_lar_supported(mvm))
 358                 return;
 359
 360         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 361         if (!IS_ERR_OR_NULL(regd)) {
 362                 /* only update the regulatory core if changed */
 363                 if (changed)
 364                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 365
 366                 kfree(regd);
 367         }
 368 }
 369
 370 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 371                                                           bool *changed)
 372 {
 373         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 374                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 375                                      MCC_SOURCE_GET_CURRENT :
 376                                      MCC_SOURCE_OLD_FW, changed);
 377 }
 378
 379 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 380 {
 381         enum iwl_mcc_source used_src;
 382         struct ieee80211_regdomain *regd;
 383         int ret;
 384         bool changed;
 385         const struct ieee80211_regdomain *r =
 386                         rtnl_dereference(mvm->hw->wiphy->regd);
 387
 388         if (!r)
 389                 return -ENOENT;
 390
 391         /* save the last source in case we overwrite it below */
 392         used_src = mvm->mcc_src;
 393         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 394                 /* Notify the firmware we support wifi location updates */
 395                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 396                 if (!IS_ERR_OR_NULL(regd))
 397                         kfree(regd);
 398         }
 399
 400         /* Now set our last stored MCC and source */
 401         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 402                                      &changed);
 403         if (IS_ERR_OR_NULL(regd))
 404                 return -EIO;
 405
 406         /* update cfg80211 if the regdomain was changed */
 407         if (changed)
 408                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 409         else
 410                 ret = 0;
 411
 412         kfree(regd);
 413         return ret;
 414 }
 415
 416 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 417 {
 418         struct ieee80211_hw *hw = mvm->hw;
 419         int num_mac, ret, i;
 420         static const u32 mvm_ciphers[] = {
 421                 WLAN_CIPHER_SUITE_WEP40,
 422                 WLAN_CIPHER_SUITE_WEP104,
 423                 WLAN_CIPHER_SUITE_TKIP,
 424                 WLAN_CIPHER_SUITE_CCMP,
 425         };
 426
 427         /* Tell mac80211 our characteristics */
 428         ieee80211_hw_set(hw, SIGNAL_DBM);
 429         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 430         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 431         ieee80211_hw_set(hw, QUEUE_CONTROL);
 432         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 433         ieee80211_hw_set(hw, SUPPORTS_PS);
 434         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 435         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 436         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 437         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 438         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 439         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 440         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 441         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 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                                     enum ieee80211_ampdu_mlme_action action,
 840                                     struct ieee80211_sta *sta, u16 tid,
 841                                     u16 *ssn, u8 buf_size, bool amsdu)
 842 {
 843         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 844         int ret;
 845         bool tx_agg_ref = false;
 846
 847         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 848                      sta->addr, tid, action);
 849
 850         if (!(mvm->nvm_data->sku_cap_11n_enable))
 851                 return -EACCES;
 852
 853         /* return from D0i3 before starting a new Tx aggregation */
 854         switch (action) {
 855         case IEEE80211_AMPDU_TX_START:
 856         case IEEE80211_AMPDU_TX_STOP_CONT:
 857         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 858         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 859         case IEEE80211_AMPDU_TX_OPERATIONAL:
 860                 /*
 861                  * for tx start, wait synchronously until D0i3 exit to
 862                  * get the correct sequence number for the tid.
 863                  * additionally, some other ampdu actions use direct
 864                  * target access, which is not handled automatically
 865                  * by the trans layer (unlike commands), so wait for
 866                  * d0i3 exit in these cases as well.
 867                  */
 868                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 869                 if (ret)
 870                         return ret;
 871
 872                 tx_agg_ref = true;
 873                 break;
 874         default:
 875                 break;
 876         }
 877
 878         mutex_lock(&mvm->mutex);
 879
 880         switch (action) {
 881         case IEEE80211_AMPDU_RX_START:
 882                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 883                         ret = -EINVAL;
 884                         break;
 885                 }
 886                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 887                 break;
 888         case IEEE80211_AMPDU_RX_STOP:
 889                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 890                 break;
 891         case IEEE80211_AMPDU_TX_START:
 892                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 893                         ret = -EINVAL;
 894                         break;
 895                 }
 896                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 897                 break;
 898         case IEEE80211_AMPDU_TX_STOP_CONT:
 899                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 900                 break;
 901         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 902         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 903                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 904                 break;
 905         case IEEE80211_AMPDU_TX_OPERATIONAL:
 906                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 907                 break;
 908         default:
 909                 WARN_ON_ONCE(1);
 910                 ret = -EINVAL;
 911                 break;
 912         }
 913
 914         if (!ret) {
 915                 u16 rx_ba_ssn = 0;
 916
 917                 if (action == IEEE80211_AMPDU_RX_START)
 918                         rx_ba_ssn = *ssn;
 919
 920                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 921                                             rx_ba_ssn, action);
 922         }
 923         mutex_unlock(&mvm->mutex);
 924
 925         /*
 926          * If the tid is marked as started, we won't use it for offloaded
 927          * traffic on the next D0i3 entry. It's safe to unref.
 928          */
 929         if (tx_agg_ref)
 930                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 931
 932         return ret;
 933 }
 934
 935 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 936                                      struct ieee80211_vif *vif)
 937 {
 938         struct iwl_mvm *mvm = data;
 939         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 940
 941         mvmvif->uploaded = false;
 942         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 943
 944         spin_lock_bh(&mvm->time_event_lock);
 945         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 946         spin_unlock_bh(&mvm->time_event_lock);
 947
 948         mvmvif->phy_ctxt = NULL;
 949         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 950 }
 951
 952 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 953 {
 954         /* clear the D3 reconfig, we only need it to avoid dumping a
 955          * firmware coredump on reconfiguration, we shouldn't do that
 956          * on D3->D0 transition
 957          */
 958         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 959                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 960                 iwl_mvm_fw_error_dump(mvm);
 961         }
 962
 963         /* cleanup all stale references (scan, roc), but keep the
 964          * ucode_down ref until reconfig is complete
 965          */
 966         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 967
 968         iwl_trans_stop_device(mvm->trans);
 969
 970         mvm->scan_status = 0;
 971         mvm->ps_disabled = false;
 972         mvm->calibrating = false;
 973
 974         /* just in case one was running */
 975         iwl_mvm_cleanup_roc_te(mvm);
 976         ieee80211_remain_on_channel_expired(mvm->hw);
 977
 978         /*
 979          * cleanup all interfaces, even inactive ones, as some might have
 980          * gone down during the HW restart
 981          */
 982         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 983
 984         mvm->p2p_device_vif = NULL;
 985         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 986
 987         iwl_mvm_reset_phy_ctxts(mvm);
 988         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 989         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 990         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 991         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 992         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 993         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 994         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 995         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 996         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 997
 998         ieee80211_wake_queues(mvm->hw);
 999
1000         /* clear any stale d0i3 state */
1001         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1002
1003         mvm->vif_count = 0;
1004         mvm->rx_ba_sessions = 0;
1005         mvm->fw_dbg_conf = FW_DBG_INVALID;
1006
1007         /* keep statistics ticking */
1008         iwl_mvm_accu_radio_stats(mvm);
1009 }
1010
1011 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1012 {
1013         int ret;
1014
1015         lockdep_assert_held(&mvm->mutex);
1016
1017         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1018                 /* Clean up some internal and mac80211 state on restart */
1019                 iwl_mvm_restart_cleanup(mvm);
1020         } else {
1021                 /* Hold the reference to prevent runtime suspend while
1022                  * the start procedure runs.  It's a bit confusing
1023                  * that the UCODE_DOWN reference is taken, but it just
1024                  * means "UCODE is not UP yet". ( TODO: rename this
1025                  * reference).
1026                  */
1027                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1028         }
1029         ret = iwl_mvm_up(mvm);
1030
1031         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1032                 /* Something went wrong - we need to finish some cleanup
1033                  * that normally iwl_mvm_mac_restart_complete() below
1034                  * would do.
1035                  */
1036                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1037                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1038         }
1039
1040         return ret;
1041 }
1042
1043 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1044 {
1045         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1046         int ret;
1047
1048         /* Some hw restart cleanups must not hold the mutex */
1049         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1050                 /*
1051                  * Make sure we are out of d0i3. This is needed
1052                  * to make sure the reference accounting is correct
1053                  * (and there is no stale d0i3_exit_work).
1054                  */
1055                 wait_event_timeout(mvm->d0i3_exit_waitq,
1056                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1057                                              &mvm->status),
1058                                    HZ);
1059         }
1060
1061         mutex_lock(&mvm->mutex);
1062         ret = __iwl_mvm_mac_start(mvm);
1063         mutex_unlock(&mvm->mutex);
1064
1065         return ret;
1066 }
1067
1068 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1069 {
1070         int ret;
1071
1072         mutex_lock(&mvm->mutex);
1073
1074         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1075         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1076         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1077         if (ret)
1078                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1079                         ret);
1080
1081         /* allow transport/FW low power modes */
1082         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1083
1084         /*
1085          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1086          * of packets the FW sent out, so we must reconnect.
1087          */
1088         iwl_mvm_teardown_tdls_peers(mvm);
1089
1090         mutex_unlock(&mvm->mutex);
1091 }
1092
1093 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1094 {
1095         if (iwl_mvm_is_d0i3_supported(mvm) &&
1096             iwl_mvm_enter_d0i3_on_suspend(mvm))
1097                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1098                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1099                                                         &mvm->status),
1100                                               HZ),
1101                           "D0i3 exit on resume timed out\n");
1102 }
1103
1104 static void
1105 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1106                               enum ieee80211_reconfig_type reconfig_type)
1107 {
1108         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1109
1110         switch (reconfig_type) {
1111         case IEEE80211_RECONFIG_TYPE_RESTART:
1112                 iwl_mvm_restart_complete(mvm);
1113                 break;
1114         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1115                 iwl_mvm_resume_complete(mvm);
1116                 break;
1117         }
1118 }
1119
1120 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1121 {
1122         lockdep_assert_held(&mvm->mutex);
1123
1124         /* firmware counters are obviously reset now, but we shouldn't
1125          * partially track so also clear the fw_reset_accu counters.
1126          */
1127         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1128
1129         /* async_handlers_wk is now blocked */
1130
1131         /*
1132          * The work item could be running or queued if the
1133          * ROC time event stops just as we get here.
1134          */
1135         flush_work(&mvm->roc_done_wk);
1136
1137         iwl_trans_stop_device(mvm->trans);
1138
1139         iwl_mvm_async_handlers_purge(mvm);
1140         /* async_handlers_list is empty and will stay empty: HW is stopped */
1141
1142         /* the fw is stopped, the aux sta is dead: clean up driver state */
1143         iwl_mvm_del_aux_sta(mvm);
1144
1145         /*
1146          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1147          * won't be called in this case).
1148          * But make sure to cleanup interfaces that have gone down before/during
1149          * HW restart was requested.
1150          */
1151         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1152                 ieee80211_iterate_interfaces(mvm->hw, 0,
1153                                              iwl_mvm_cleanup_iterator, mvm);
1154
1155         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1156          * make sure there's nothing left there and warn if any is found.
1157          */
1158         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1159                 int i;
1160
1161                 for (i = 0; i < mvm->max_scans; i++) {
1162                         if (WARN_ONCE(mvm->scan_uid_status[i],
1163                                       "UMAC scan UID %d status was not cleaned\n",
1164                                       i))
1165                                 mvm->scan_uid_status[i] = 0;
1166                 }
1167         }
1168
1169         mvm->ucode_loaded = false;
1170 }
1171
1172 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1173 {
1174         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1175
1176         flush_work(&mvm->d0i3_exit_work);
1177         flush_work(&mvm->async_handlers_wk);
1178         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1179         iwl_mvm_free_fw_dump_desc(mvm);
1180
1181         mutex_lock(&mvm->mutex);
1182         __iwl_mvm_mac_stop(mvm);
1183         mutex_unlock(&mvm->mutex);
1184
1185         /*
1186          * The worker might have been waiting for the mutex, let it run and
1187          * discover that its list is now empty.
1188          */
1189         cancel_work_sync(&mvm->async_handlers_wk);
1190 }
1191
1192 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1193 {
1194         u16 i;
1195
1196         lockdep_assert_held(&mvm->mutex);
1197
1198         for (i = 0; i < NUM_PHY_CTX; i++)
1199                 if (!mvm->phy_ctxts[i].ref)
1200                         return &mvm->phy_ctxts[i];
1201
1202         IWL_ERR(mvm, "No available PHY context\n");
1203         return NULL;
1204 }
1205
1206 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1207                                 s16 tx_power)
1208 {
1209         struct iwl_dev_tx_power_cmd cmd = {
1210                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1211                 .v2.mac_context_id =
1212                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1213                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1214         };
1215         int len = sizeof(cmd);
1216
1217         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1218                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1219
1220         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1221                 len = sizeof(cmd.v2);
1222
1223         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1224 }
1225
1226 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1227                                      struct ieee80211_vif *vif)
1228 {
1229         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1231         int ret;
1232
1233         mvmvif->mvm = mvm;
1234
1235         /*
1236          * make sure D0i3 exit is completed, otherwise a target access
1237          * during tx queue configuration could be done when still in
1238          * D0i3 state.
1239          */
1240         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1241         if (ret)
1242                 return ret;
1243
1244         /*
1245          * Not much to do here. The stack will not allow interface
1246          * types or combinations that we didn't advertise, so we
1247          * don't really have to check the types.
1248          */
1249
1250         mutex_lock(&mvm->mutex);
1251
1252         /* make sure that beacon statistics don't go backwards with FW reset */
1253         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1254                 mvmvif->beacon_stats.accu_num_beacons +=
1255                         mvmvif->beacon_stats.num_beacons;
1256
1257         /* Allocate resources for the MAC context, and add it to the fw  */
1258         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1259         if (ret)
1260                 goto out_unlock;
1261
1262         /* Counting number of interfaces is needed for legacy PM */
1263         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1264                 mvm->vif_count++;
1265
1266         /*
1267          * The AP binding flow can be done only after the beacon
1268          * template is configured (which happens only in the mac80211
1269          * start_ap() flow), and adding the broadcast station can happen
1270          * only after the binding.
1271          * In addition, since modifying the MAC before adding a bcast
1272          * station is not allowed by the FW, delay the adding of MAC context to
1273          * the point where we can also add the bcast station.
1274          * In short: there's not much we can do at this point, other than
1275          * allocating resources :)
1276          */
1277         if (vif->type == NL80211_IFTYPE_AP ||
1278             vif->type == NL80211_IFTYPE_ADHOC) {
1279                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1280                 if (ret) {
1281                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1282                         goto out_release;
1283                 }
1284
1285                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1286                 goto out_unlock;
1287         }
1288
1289         mvmvif->features |= hw->netdev_features;
1290
1291         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1292         if (ret)
1293                 goto out_release;
1294
1295         ret = iwl_mvm_power_update_mac(mvm);
1296         if (ret)
1297                 goto out_remove_mac;
1298
1299         /* beacon filtering */
1300         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1301         if (ret)
1302                 goto out_remove_mac;
1303
1304         if (!mvm->bf_allowed_vif &&
1305             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1306                 mvm->bf_allowed_vif = mvmvif;
1307                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1308                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1309         }
1310
1311         /*
1312          * P2P_DEVICE interface does not have a channel context assigned to it,
1313          * so a dedicated PHY context is allocated to it and the corresponding
1314          * MAC context is bound to it at this stage.
1315          */
1316         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1317
1318                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1319                 if (!mvmvif->phy_ctxt) {
1320                         ret = -ENOSPC;
1321                         goto out_free_bf;
1322                 }
1323
1324                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1325                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1326                 if (ret)
1327                         goto out_unref_phy;
1328
1329                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1330                 if (ret)
1331                         goto out_unbind;
1332
1333                 /* Save a pointer to p2p device vif, so it can later be used to
1334                  * update the p2p device MAC when a GO is started/stopped */
1335                 mvm->p2p_device_vif = vif;
1336         }
1337
1338         iwl_mvm_vif_dbgfs_register(mvm, vif);
1339         goto out_unlock;
1340
1341  out_unbind:
1342         iwl_mvm_binding_remove_vif(mvm, vif);
1343  out_unref_phy:
1344         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1345  out_free_bf:
1346         if (mvm->bf_allowed_vif == mvmvif) {
1347                 mvm->bf_allowed_vif = NULL;
1348                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1349                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1350         }
1351  out_remove_mac:
1352         mvmvif->phy_ctxt = NULL;
1353         iwl_mvm_mac_ctxt_remove(mvm, vif);
1354  out_release:
1355         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1356                 mvm->vif_count--;
1357
1358         iwl_mvm_mac_ctxt_release(mvm, vif);
1359  out_unlock:
1360         mutex_unlock(&mvm->mutex);
1361
1362         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1363
1364         return ret;
1365 }
1366
1367 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1368                                         struct ieee80211_vif *vif)
1369 {
1370         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1371
1372         if (tfd_msk) {
1373                 /*
1374                  * mac80211 first removes all the stations of the vif and
1375                  * then removes the vif. When it removes a station it also
1376                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1377                  * of all the stations of this vif are closed, and the queues
1378                  * of these AMPDU sessions are properly closed.
1379                  * We still need to take care of the shared queues of the vif.
1380                  * Flush them here.
1381                  */
1382                 mutex_lock(&mvm->mutex);
1383                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1384                 mutex_unlock(&mvm->mutex);
1385
1386                 /*
1387                  * There are transports that buffer a few frames in the host.
1388                  * For these, the flush above isn't enough since while we were
1389                  * flushing, the transport might have sent more frames to the
1390                  * device. To solve this, wait here until the transport is
1391                  * empty. Technically, this could have replaced the flush
1392                  * above, but flush is much faster than draining. So flush
1393                  * first, and drain to make sure we have no frames in the
1394                  * transport anymore.
1395                  * If a station still had frames on the shared queues, it is
1396                  * already marked as draining, so to complete the draining, we
1397                  * just need to wait until the transport is empty.
1398                  */
1399                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1400         }
1401
1402         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1403                 /*
1404                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1405                  * We assume here that all the packets sent to the OFFCHANNEL
1406                  * queue are sent in ROC session.
1407                  */
1408                 flush_work(&mvm->roc_done_wk);
1409         } else {
1410                 /*
1411                  * By now, all the AC queues are empty. The AGG queues are
1412                  * empty too. We already got all the Tx responses for all the
1413                  * packets in the queues. The drain work can have been
1414                  * triggered. Flush it.
1415                  */
1416                 flush_work(&mvm->sta_drained_wk);
1417         }
1418 }
1419
1420 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1421                                          struct ieee80211_vif *vif)
1422 {
1423         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1424         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1425
1426         iwl_mvm_prepare_mac_removal(mvm, vif);
1427
1428         mutex_lock(&mvm->mutex);
1429
1430         if (mvm->bf_allowed_vif == mvmvif) {
1431                 mvm->bf_allowed_vif = NULL;
1432                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1433                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1434         }
1435
1436         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1437
1438         /*
1439          * For AP/GO interface, the tear down of the resources allocated to the
1440          * interface is be handled as part of the stop_ap flow.
1441          */
1442         if (vif->type == NL80211_IFTYPE_AP ||
1443             vif->type == NL80211_IFTYPE_ADHOC) {
1444 #ifdef CONFIG_NL80211_TESTMODE
1445                 if (vif == mvm->noa_vif) {
1446                         mvm->noa_vif = NULL;
1447                         mvm->noa_duration = 0;
1448                 }
1449 #endif
1450                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1451                 goto out_release;
1452         }
1453
1454         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1455                 mvm->p2p_device_vif = NULL;
1456                 iwl_mvm_rm_bcast_sta(mvm, vif);
1457                 iwl_mvm_binding_remove_vif(mvm, vif);
1458                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1459                 mvmvif->phy_ctxt = NULL;
1460         }
1461
1462         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1463                 mvm->vif_count--;
1464
1465         iwl_mvm_power_update_mac(mvm);
1466         iwl_mvm_mac_ctxt_remove(mvm, vif);
1467
1468 out_release:
1469         iwl_mvm_mac_ctxt_release(mvm, vif);
1470         mutex_unlock(&mvm->mutex);
1471 }
1472
1473 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1474 {
1475         return 0;
1476 }
1477
1478 struct iwl_mvm_mc_iter_data {
1479         struct iwl_mvm *mvm;
1480         int port_id;
1481 };
1482
1483 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1484                                       struct ieee80211_vif *vif)
1485 {
1486         struct iwl_mvm_mc_iter_data *data = _data;
1487         struct iwl_mvm *mvm = data->mvm;
1488         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1489         int ret, len;
1490
1491         /* if we don't have free ports, mcast frames will be dropped */
1492         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1493                 return;
1494
1495         if (vif->type != NL80211_IFTYPE_STATION ||
1496             !vif->bss_conf.assoc)
1497                 return;
1498
1499         cmd->port_id = data->port_id++;
1500         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1501         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1502
1503         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1504         if (ret)
1505                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1506 }
1507
1508 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1509 {
1510         struct iwl_mvm_mc_iter_data iter_data = {
1511                 .mvm = mvm,
1512         };
1513
1514         lockdep_assert_held(&mvm->mutex);
1515
1516         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1517                 return;
1518
1519         ieee80211_iterate_active_interfaces_atomic(
1520                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1521                 iwl_mvm_mc_iface_iterator, &iter_data);
1522 }
1523
1524 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1525                                      struct netdev_hw_addr_list *mc_list)
1526 {
1527         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1528         struct iwl_mcast_filter_cmd *cmd;
1529         struct netdev_hw_addr *addr;
1530         int addr_count;
1531         bool pass_all;
1532         int len;
1533
1534         addr_count = netdev_hw_addr_list_count(mc_list);
1535         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1536                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1537         if (pass_all)
1538                 addr_count = 0;
1539
1540         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1541         cmd = kzalloc(len, GFP_ATOMIC);
1542         if (!cmd)
1543                 return 0;
1544
1545         if (pass_all) {
1546                 cmd->pass_all = 1;
1547                 return (u64)(unsigned long)cmd;
1548         }
1549
1550         netdev_hw_addr_list_for_each(addr, mc_list) {
1551                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1552                                    cmd->count, addr->addr);
1553                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1554                        addr->addr, ETH_ALEN);
1555                 cmd->count++;
1556         }
1557
1558         return (u64)(unsigned long)cmd;
1559 }
1560
1561 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1562                                      unsigned int changed_flags,
1563                                      unsigned int *total_flags,
1564                                      u64 multicast)
1565 {
1566         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1567         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1568
1569         mutex_lock(&mvm->mutex);
1570
1571         /* replace previous configuration */
1572         kfree(mvm->mcast_filter_cmd);
1573         mvm->mcast_filter_cmd = cmd;
1574
1575         if (!cmd)
1576                 goto out;
1577
1578         iwl_mvm_recalc_multicast(mvm);
1579 out:
1580         mutex_unlock(&mvm->mutex);
1581         *total_flags = 0;
1582 }
1583
1584 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1585                                         struct ieee80211_vif *vif,
1586                                         unsigned int filter_flags,
1587                                         unsigned int changed_flags)
1588 {
1589         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1590
1591         /* We support only filter for probe requests */
1592         if (!(changed_flags & FIF_PROBE_REQ))
1593                 return;
1594
1595         /* Supported only for p2p client interfaces */
1596         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1597             !vif->p2p)
1598                 return;
1599
1600         mutex_lock(&mvm->mutex);
1601         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1602         mutex_unlock(&mvm->mutex);
1603 }
1604
1605 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1606 struct iwl_bcast_iter_data {
1607         struct iwl_mvm *mvm;
1608         struct iwl_bcast_filter_cmd *cmd;
1609         u8 current_filter;
1610 };
1611
1612 static void
1613 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1614                          const struct iwl_fw_bcast_filter *in_filter,
1615                          struct iwl_fw_bcast_filter *out_filter)
1616 {
1617         struct iwl_fw_bcast_filter_attr *attr;
1618         int i;
1619
1620         memcpy(out_filter, in_filter, sizeof(*out_filter));
1621
1622         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1623                 attr = &out_filter->attrs[i];
1624
1625                 if (!attr->mask)
1626                         break;
1627
1628                 switch (attr->reserved1) {
1629                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1630                         if (vif->bss_conf.arp_addr_cnt != 1) {
1631                                 attr->mask = 0;
1632                                 continue;
1633                         }
1634
1635                         attr->val = vif->bss_conf.arp_addr_list[0];
1636                         break;
1637                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1638                         attr->val = *(__be32 *)&vif->addr[2];
1639                         break;
1640                 default:
1641                         break;
1642                 }
1643                 attr->reserved1 = 0;
1644                 out_filter->num_attrs++;
1645         }
1646 }
1647
1648 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1649                                           struct ieee80211_vif *vif)
1650 {
1651         struct iwl_bcast_iter_data *data = _data;
1652         struct iwl_mvm *mvm = data->mvm;
1653         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1654         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1655         struct iwl_fw_bcast_mac *bcast_mac;
1656         int i;
1657
1658         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1659                 return;
1660
1661         bcast_mac = &cmd->macs[mvmvif->id];
1662
1663         /*
1664          * enable filtering only for associated stations, but not for P2P
1665          * Clients
1666          */
1667         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1668             !vif->bss_conf.assoc)
1669                 return;
1670
1671         bcast_mac->default_discard = 1;
1672
1673         /* copy all configured filters */
1674         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1675                 /*
1676                  * Make sure we don't exceed our filters limit.
1677                  * if there is still a valid filter to be configured,
1678                  * be on the safe side and just allow bcast for this mac.
1679                  */
1680                 if (WARN_ON_ONCE(data->current_filter >=
1681                                  ARRAY_SIZE(cmd->filters))) {
1682                         bcast_mac->default_discard = 0;
1683                         bcast_mac->attached_filters = 0;
1684                         break;
1685                 }
1686
1687                 iwl_mvm_set_bcast_filter(vif,
1688                                          &mvm->bcast_filters[i],
1689                                          &cmd->filters[data->current_filter]);
1690
1691                 /* skip current filter if it contains no attributes */
1692                 if (!cmd->filters[data->current_filter].num_attrs)
1693                         continue;
1694
1695                 /* attach the filter to current mac */
1696                 bcast_mac->attached_filters |=
1697                                 cpu_to_le16(BIT(data->current_filter));
1698
1699                 data->current_filter++;
1700         }
1701 }
1702
1703 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1704                                     struct iwl_bcast_filter_cmd *cmd)
1705 {
1706         struct iwl_bcast_iter_data iter_data = {
1707                 .mvm = mvm,
1708                 .cmd = cmd,
1709         };
1710
1711         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1712                 return false;
1713
1714         memset(cmd, 0, sizeof(*cmd));
1715         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1716         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1717
1718 #ifdef CONFIG_IWLWIFI_DEBUGFS
1719         /* use debugfs filters/macs if override is configured */
1720         if (mvm->dbgfs_bcast_filtering.override) {
1721                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1722                        sizeof(cmd->filters));
1723                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1724                        sizeof(cmd->macs));
1725                 return true;
1726         }
1727 #endif
1728
1729         /* if no filters are configured, do nothing */
1730         if (!mvm->bcast_filters)
1731                 return false;
1732
1733         /* configure and attach these filters for each associated sta vif */
1734         ieee80211_iterate_active_interfaces(
1735                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1736                 iwl_mvm_bcast_filter_iterator, &iter_data);
1737
1738         return true;
1739 }
1740
1741 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1742 {
1743         struct iwl_bcast_filter_cmd cmd;
1744
1745         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1746                 return 0;
1747
1748         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1749                 return 0;
1750
1751         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1752                                     sizeof(cmd), &cmd);
1753 }
1754 #else
1755 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1756 {
1757         return 0;
1758 }
1759 #endif
1760
1761 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1762                                              struct ieee80211_vif *vif,
1763                                              struct ieee80211_bss_conf *bss_conf,
1764                                              u32 changes)
1765 {
1766         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1767         int ret;
1768
1769         /*
1770          * Re-calculate the tsf id, as the master-slave relations depend on the
1771          * beacon interval, which was not known when the station interface was
1772          * added.
1773          */
1774         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1775                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1776
1777         /*
1778          * If we're not associated yet, take the (new) BSSID before associating
1779          * so the firmware knows. If we're already associated, then use the old
1780          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1781          * branch for disassociation below.
1782          */
1783         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1784                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1785
1786         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1787         if (ret)
1788                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1789
1790         /* after sending it once, adopt mac80211 data */
1791         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1792         mvmvif->associated = bss_conf->assoc;
1793
1794         if (changes & BSS_CHANGED_ASSOC) {
1795                 if (bss_conf->assoc) {
1796                         /* clear statistics to get clean beacon counter */
1797                         iwl_mvm_request_statistics(mvm, true);
1798                         memset(&mvmvif->beacon_stats, 0,
1799                                sizeof(mvmvif->beacon_stats));
1800
1801                         /* add quota for this interface */
1802                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1803                         if (ret) {
1804                                 IWL_ERR(mvm, "failed to update quotas\n");
1805                                 return;
1806                         }
1807
1808                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1809                                      &mvm->status)) {
1810                                 /*
1811                                  * If we're restarting then the firmware will
1812                                  * obviously have lost synchronisation with
1813                                  * the AP. It will attempt to synchronise by
1814                                  * itself, but we can make it more reliable by
1815                                  * scheduling a session protection time event.
1816                                  *
1817                                  * The firmware needs to receive a beacon to
1818                                  * catch up with synchronisation, use 110% of
1819                                  * the beacon interval.
1820                                  *
1821                                  * Set a large maximum delay to allow for more
1822                                  * than a single interface.
1823                                  */
1824                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1825                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1826                                                         5 * dur, false);
1827                         }
1828
1829                         iwl_mvm_sf_update(mvm, vif, false);
1830                         iwl_mvm_power_vif_assoc(mvm, vif);
1831                         if (vif->p2p) {
1832                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1833                                 iwl_mvm_update_smps(mvm, vif,
1834                                                     IWL_MVM_SMPS_REQ_PROT,
1835                                                     IEEE80211_SMPS_DYNAMIC);
1836                         }
1837                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1838                         /*
1839                          * If update fails - SF might be running in associated
1840                          * mode while disassociated - which is forbidden.
1841                          */
1842                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1843                                   "Failed to update SF upon disassociation\n");
1844
1845                         /* remove AP station now that the MAC is unassoc */
1846                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1847                         if (ret)
1848                                 IWL_ERR(mvm, "failed to remove AP station\n");
1849
1850                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1851                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1852                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1853                         /* remove quota for this interface */
1854                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1855                         if (ret)
1856                                 IWL_ERR(mvm, "failed to update quotas\n");
1857
1858                         if (vif->p2p)
1859                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1860
1861                         /* this will take the cleared BSSID from bss_conf */
1862                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1863                         if (ret)
1864                                 IWL_ERR(mvm,
1865                                         "failed to update MAC %pM (clear after unassoc)\n",
1866                                         vif->addr);
1867                 }
1868
1869                 iwl_mvm_recalc_multicast(mvm);
1870                 iwl_mvm_configure_bcast_filter(mvm);
1871
1872                 /* reset rssi values */
1873                 mvmvif->bf_data.ave_beacon_signal = 0;
1874
1875                 iwl_mvm_bt_coex_vif_change(mvm);
1876                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1877                                     IEEE80211_SMPS_AUTOMATIC);
1878                 if (fw_has_capa(&mvm->fw->ucode_capa,
1879                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1880                         iwl_mvm_config_scan(mvm);
1881         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1882                 /*
1883                  * We received a beacon _after_ association so
1884                  * remove the session protection.
1885                  */
1886                 iwl_mvm_remove_time_event(mvm, mvmvif,
1887                                           &mvmvif->time_event_data);
1888         }
1889
1890         if (changes & BSS_CHANGED_BEACON_INFO) {
1891                 iwl_mvm_sf_update(mvm, vif, false);
1892                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1893         }
1894
1895         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1896                 ret = iwl_mvm_power_update_mac(mvm);
1897                 if (ret)
1898                         IWL_ERR(mvm, "failed to update power mode\n");
1899         }
1900
1901         if (changes & BSS_CHANGED_TXPOWER) {
1902                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1903                                 bss_conf->txpower);
1904                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1905         }
1906
1907         if (changes & BSS_CHANGED_CQM) {
1908                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1909                 /* reset cqm events tracking */
1910                 mvmvif->bf_data.last_cqm_event = 0;
1911                 if (mvmvif->bf_data.bf_enabled) {
1912                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1913                         if (ret)
1914                                 IWL_ERR(mvm,
1915                                         "failed to update CQM thresholds\n");
1916                 }
1917         }
1918
1919         if (changes & BSS_CHANGED_ARP_FILTER) {
1920                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1921                 iwl_mvm_configure_bcast_filter(mvm);
1922         }
1923 }
1924
1925 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1926                                  struct ieee80211_vif *vif)
1927 {
1928         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1929         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1930         int ret;
1931
1932         /*
1933          * iwl_mvm_mac_ctxt_add() might read directly from the device
1934          * (the system time), so make sure it is available.
1935          */
1936         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1937         if (ret)
1938                 return ret;
1939
1940         mutex_lock(&mvm->mutex);
1941
1942         /* Send the beacon template */
1943         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1944         if (ret)
1945                 goto out_unlock;
1946
1947         /*
1948          * Re-calculate the tsf id, as the master-slave relations depend on the
1949          * beacon interval, which was not known when the AP interface was added.
1950          */
1951         if (vif->type == NL80211_IFTYPE_AP)
1952                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1953
1954         mvmvif->ap_assoc_sta_count = 0;
1955
1956         /* Add the mac context */
1957         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1958         if (ret)
1959                 goto out_unlock;
1960
1961         /* Perform the binding */
1962         ret = iwl_mvm_binding_add_vif(mvm, vif);
1963         if (ret)
1964                 goto out_remove;
1965
1966         /* Send the bcast station. At this stage the TBTT and DTIM time events
1967          * are added and applied to the scheduler */
1968         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1969         if (ret)
1970                 goto out_unbind;
1971
1972         /* must be set before quota calculations */
1973         mvmvif->ap_ibss_active = true;
1974
1975         /* power updated needs to be done before quotas */
1976         iwl_mvm_power_update_mac(mvm);
1977
1978         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1979         if (ret)
1980                 goto out_quota_failed;
1981
1982         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1983         if (vif->p2p && mvm->p2p_device_vif)
1984                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1985
1986         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1987
1988         iwl_mvm_bt_coex_vif_change(mvm);
1989
1990         /* we don't support TDLS during DCM */
1991         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1992                 iwl_mvm_teardown_tdls_peers(mvm);
1993
1994         goto out_unlock;
1995
1996 out_quota_failed:
1997         iwl_mvm_power_update_mac(mvm);
1998         mvmvif->ap_ibss_active = false;
1999         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2000 out_unbind:
2001         iwl_mvm_binding_remove_vif(mvm, vif);
2002 out_remove:
2003         iwl_mvm_mac_ctxt_remove(mvm, vif);
2004 out_unlock:
2005         mutex_unlock(&mvm->mutex);
2006         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2007         return ret;
2008 }
2009
2010 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2011                                  struct ieee80211_vif *vif)
2012 {
2013         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2014         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2015
2016         iwl_mvm_prepare_mac_removal(mvm, vif);
2017
2018         mutex_lock(&mvm->mutex);
2019
2020         /* Handle AP stop while in CSA */
2021         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2022                 iwl_mvm_remove_time_event(mvm, mvmvif,
2023                                           &mvmvif->time_event_data);
2024                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2025                 mvmvif->csa_countdown = false;
2026         }
2027
2028         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2029                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2030                 mvm->csa_tx_block_bcn_timeout = 0;
2031         }
2032
2033         mvmvif->ap_ibss_active = false;
2034         mvm->ap_last_beacon_gp2 = 0;
2035
2036         iwl_mvm_bt_coex_vif_change(mvm);
2037
2038         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2039
2040         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2041         if (vif->p2p && mvm->p2p_device_vif)
2042                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2043
2044         iwl_mvm_update_quotas(mvm, false, NULL);
2045         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2046         iwl_mvm_binding_remove_vif(mvm, vif);
2047
2048         iwl_mvm_power_update_mac(mvm);
2049
2050         iwl_mvm_mac_ctxt_remove(mvm, vif);
2051
2052         mutex_unlock(&mvm->mutex);
2053 }
2054
2055 static void
2056 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2057                                  struct ieee80211_vif *vif,
2058                                  struct ieee80211_bss_conf *bss_conf,
2059                                  u32 changes)
2060 {
2061         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2062
2063         /* Changes will be applied when the AP/IBSS is started */
2064         if (!mvmvif->ap_ibss_active)
2065                 return;
2066
2067         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2068                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2069             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2070                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2071
2072         /* Need to send a new beacon template to the FW */
2073         if (changes & BSS_CHANGED_BEACON &&
2074             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2075                 IWL_WARN(mvm, "Failed updating beacon data\n");
2076
2077         if (changes & BSS_CHANGED_TXPOWER) {
2078                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2079                                 bss_conf->txpower);
2080                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2081         }
2082
2083 }
2084
2085 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2086                                      struct ieee80211_vif *vif,
2087                                      struct ieee80211_bss_conf *bss_conf,
2088                                      u32 changes)
2089 {
2090         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2091
2092         /*
2093          * iwl_mvm_bss_info_changed_station() might call
2094          * iwl_mvm_protect_session(), which reads directly from
2095          * the device (the system time), so make sure it is available.
2096          */
2097         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2098                 return;
2099
2100         mutex_lock(&mvm->mutex);
2101
2102         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2103                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2104
2105         switch (vif->type) {
2106         case NL80211_IFTYPE_STATION:
2107                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2108                 break;
2109         case NL80211_IFTYPE_AP:
2110         case NL80211_IFTYPE_ADHOC:
2111                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2112                 break;
2113         default:
2114                 /* shouldn't happen */
2115                 WARN_ON_ONCE(1);
2116         }
2117
2118         mutex_unlock(&mvm->mutex);
2119         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2120 }
2121
2122 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2123                                struct ieee80211_vif *vif,
2124                                struct ieee80211_scan_request *hw_req)
2125 {
2126         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2127         int ret;
2128
2129         if (hw_req->req.n_channels == 0 ||
2130             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2131                 return -EINVAL;
2132
2133         mutex_lock(&mvm->mutex);
2134         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2135         mutex_unlock(&mvm->mutex);
2136
2137         return ret;
2138 }
2139
2140 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2141                                        struct ieee80211_vif *vif)
2142 {
2143         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2144
2145         mutex_lock(&mvm->mutex);
2146
2147         /* Due to a race condition, it's possible that mac80211 asks
2148          * us to stop a hw_scan when it's already stopped.  This can
2149          * happen, for instance, if we stopped the scan ourselves,
2150          * called ieee80211_scan_completed() and the userspace called
2151          * cancel scan scan before ieee80211_scan_work() could run.
2152          * To handle that, simply return if the scan is not running.
2153         */
2154         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2155                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2156
2157         mutex_unlock(&mvm->mutex);
2158 }
2159
2160 static void
2161 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2162                                   struct ieee80211_sta *sta, u16 tids,
2163                                   int num_frames,
2164                                   enum ieee80211_frame_release_type reason,
2165                                   bool more_data)
2166 {
2167         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2168
2169         /* Called when we need to transmit (a) frame(s) from mac80211 */
2170
2171         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2172                                           tids, more_data, false);
2173 }
2174
2175 static void
2176 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2177                                     struct ieee80211_sta *sta, u16 tids,
2178                                     int num_frames,
2179                                     enum ieee80211_frame_release_type reason,
2180                                     bool more_data)
2181 {
2182         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2183
2184         /* Called when we need to transmit (a) frame(s) from agg queue */
2185
2186         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2187                                           tids, more_data, true);
2188 }
2189
2190 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2191                                    struct ieee80211_vif *vif,
2192                                    enum sta_notify_cmd cmd,
2193                                    struct ieee80211_sta *sta)
2194 {
2195         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2196         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2197         unsigned long txqs = 0, tids = 0;
2198         int tid;
2199
2200         spin_lock_bh(&mvmsta->lock);
2201         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2202                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2203
2204                 if (tid_data->state != IWL_AGG_ON &&
2205                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2206                         continue;
2207
2208                 __set_bit(tid_data->txq_id, &txqs);
2209
2210                 if (iwl_mvm_tid_queued(tid_data) == 0)
2211                         continue;
2212
2213                 __set_bit(tid, &tids);
2214         }
2215
2216         switch (cmd) {
2217         case STA_NOTIFY_SLEEP:
2218                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2219                         ieee80211_sta_block_awake(hw, sta, true);
2220
2221                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2222                         ieee80211_sta_set_buffered(sta, tid, true);
2223
2224                 if (txqs)
2225                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2226                 /*
2227                  * The fw updates the STA to be asleep. Tx packets on the Tx
2228                  * queues to this station will not be transmitted. The fw will
2229                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2230                  */
2231                 break;
2232         case STA_NOTIFY_AWAKE:
2233                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2234                         break;
2235
2236                 if (txqs)
2237                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2238                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2239                 break;
2240         default:
2241                 break;
2242         }
2243         spin_unlock_bh(&mvmsta->lock);
2244 }
2245
2246 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2247                                        struct ieee80211_vif *vif,
2248                                        struct ieee80211_sta *sta)
2249 {
2250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2251         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2252
2253         /*
2254          * This is called before mac80211 does RCU synchronisation,
2255          * so here we already invalidate our internal RCU-protected
2256          * station pointer. The rest of the code will thus no longer
2257          * be able to find the station this way, and we don't rely
2258          * on further RCU synchronisation after the sta_state()
2259          * callback deleted the station.
2260          */
2261         mutex_lock(&mvm->mutex);
2262         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2263                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2264                                    ERR_PTR(-ENOENT));
2265
2266         mutex_unlock(&mvm->mutex);
2267 }
2268
2269 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2270                                 const u8 *bssid)
2271 {
2272         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2273                 return;
2274
2275         if (iwlwifi_mod_params.uapsd_disable) {
2276                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2277                 return;
2278         }
2279
2280         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2281 }
2282
2283 static void
2284 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2285                            struct ieee80211_vif *vif, u8 *peer_addr,
2286                            enum nl80211_tdls_operation action)
2287 {
2288         struct iwl_fw_dbg_trigger_tlv *trig;
2289         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2290
2291         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2292                 return;
2293
2294         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2295         tdls_trig = (void *)trig->data;
2296         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2297                 return;
2298
2299         if (!(tdls_trig->action_bitmap & BIT(action)))
2300                 return;
2301
2302         if (tdls_trig->peer_mode &&
2303             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2304                 return;
2305
2306         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2307                                     "TDLS event occurred, peer %pM, action %d",
2308                                     peer_addr, action);
2309 }
2310
2311 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2312                                  struct ieee80211_vif *vif,
2313                                  struct ieee80211_sta *sta,
2314                                  enum ieee80211_sta_state old_state,
2315                                  enum ieee80211_sta_state new_state)
2316 {
2317         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2318         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2319         int ret;
2320
2321         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2322                            sta->addr, old_state, new_state);
2323
2324         /* this would be a mac80211 bug ... but don't crash */
2325         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2326                 return -EINVAL;
2327
2328         /* if a STA is being removed, reuse its ID */
2329         flush_work(&mvm->sta_drained_wk);
2330
2331         mutex_lock(&mvm->mutex);
2332         if (old_state == IEEE80211_STA_NOTEXIST &&
2333             new_state == IEEE80211_STA_NONE) {
2334                 /*
2335                  * Firmware bug - it'll crash if the beacon interval is less
2336                  * than 16. We can't avoid connecting at all, so refuse the
2337                  * station state change, this will cause mac80211 to abandon
2338                  * attempts to connect to this AP, and eventually wpa_s will
2339                  * blacklist the AP...
2340                  */
2341                 if (vif->type == NL80211_IFTYPE_STATION &&
2342                     vif->bss_conf.beacon_int < 16) {
2343                         IWL_ERR(mvm,
2344                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2345                                 sta->addr, vif->bss_conf.beacon_int);
2346                         ret = -EINVAL;
2347                         goto out_unlock;
2348                 }
2349
2350                 if (sta->tdls &&
2351                     (vif->p2p ||
2352                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2353                                                 IWL_MVM_TDLS_STA_COUNT ||
2354                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2355                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2356                         ret = -EBUSY;
2357                         goto out_unlock;
2358                 }
2359
2360                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2361                 if (sta->tdls && ret == 0) {
2362                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2363                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2364                                                    NL80211_TDLS_SETUP);
2365                 }
2366         } else if (old_state == IEEE80211_STA_NONE &&
2367                    new_state == IEEE80211_STA_AUTH) {
2368                 /*
2369                  * EBS may be disabled due to previous failures reported by FW.
2370                  * Reset EBS status here assuming environment has been changed.
2371                  */
2372                 mvm->last_ebs_successful = true;
2373                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2374                 ret = 0;
2375         } else if (old_state == IEEE80211_STA_AUTH &&
2376                    new_state == IEEE80211_STA_ASSOC) {
2377                 if (vif->type == NL80211_IFTYPE_AP) {
2378                         mvmvif->ap_assoc_sta_count++;
2379                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2380                 }
2381                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2382                 if (ret == 0)
2383                         iwl_mvm_rs_rate_init(mvm, sta,
2384                                              mvmvif->phy_ctxt->channel->band,
2385                                              true);
2386         } else if (old_state == IEEE80211_STA_ASSOC &&
2387                    new_state == IEEE80211_STA_AUTHORIZED) {
2388
2389                 /* we don't support TDLS during DCM */
2390                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2391                         iwl_mvm_teardown_tdls_peers(mvm);
2392
2393                 if (sta->tdls)
2394                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2395                                                    NL80211_TDLS_ENABLE_LINK);
2396
2397                 /* enable beacon filtering */
2398                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2399                 ret = 0;
2400         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2401                    new_state == IEEE80211_STA_ASSOC) {
2402                 /* disable beacon filtering */
2403                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2404                 ret = 0;
2405         } else if (old_state == IEEE80211_STA_ASSOC &&
2406                    new_state == IEEE80211_STA_AUTH) {
2407                 if (vif->type == NL80211_IFTYPE_AP) {
2408                         mvmvif->ap_assoc_sta_count--;
2409                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2410                 }
2411                 ret = 0;
2412         } else if (old_state == IEEE80211_STA_AUTH &&
2413                    new_state == IEEE80211_STA_NONE) {
2414                 ret = 0;
2415         } else if (old_state == IEEE80211_STA_NONE &&
2416                    new_state == IEEE80211_STA_NOTEXIST) {
2417                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2418                 if (sta->tdls) {
2419                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2420                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2421                                                    NL80211_TDLS_DISABLE_LINK);
2422                 }
2423         } else {
2424                 ret = -EIO;
2425         }
2426  out_unlock:
2427         mutex_unlock(&mvm->mutex);
2428
2429         if (sta->tdls && ret == 0) {
2430                 if (old_state == IEEE80211_STA_NOTEXIST &&
2431                     new_state == IEEE80211_STA_NONE)
2432                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2433                 else if (old_state == IEEE80211_STA_NONE &&
2434                          new_state == IEEE80211_STA_NOTEXIST)
2435                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2436         }
2437
2438         return ret;
2439 }
2440
2441 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2442 {
2443         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2444
2445         mvm->rts_threshold = value;
2446
2447         return 0;
2448 }
2449
2450 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2451                                   struct ieee80211_vif *vif,
2452                                   struct ieee80211_sta *sta, u32 changed)
2453 {
2454         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2455
2456         if (vif->type == NL80211_IFTYPE_STATION &&
2457             changed & IEEE80211_RC_NSS_CHANGED)
2458                 iwl_mvm_sf_update(mvm, vif, false);
2459 }
2460
2461 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2462                                struct ieee80211_vif *vif, u16 ac,
2463                                const struct ieee80211_tx_queue_params *params)
2464 {
2465         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2466         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2467
2468         mvmvif->queue_params[ac] = *params;
2469
2470         /*
2471          * No need to update right away, we'll get BSS_CHANGED_QOS
2472          * The exception is P2P_DEVICE interface which needs immediate update.
2473          */
2474         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2475                 int ret;
2476
2477                 mutex_lock(&mvm->mutex);
2478                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2479                 mutex_unlock(&mvm->mutex);
2480                 return ret;
2481         }
2482         return 0;
2483 }
2484
2485 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2486                                       struct ieee80211_vif *vif)
2487 {
2488         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2489         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2490                            200 + vif->bss_conf.beacon_int);
2491         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2492                                100 + vif->bss_conf.beacon_int);
2493
2494         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2495                 return;
2496
2497         /*
2498          * iwl_mvm_protect_session() reads directly from the device
2499          * (the system time), so make sure it is available.
2500          */
2501         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2502                 return;
2503
2504         mutex_lock(&mvm->mutex);
2505         /* Try really hard to protect the session and hear a beacon */
2506         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2507         mutex_unlock(&mvm->mutex);
2508
2509         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2510 }
2511
2512 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2513                                         struct ieee80211_vif *vif,
2514                                         struct cfg80211_sched_scan_request *req,
2515                                         struct ieee80211_scan_ies *ies)
2516 {
2517         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518
2519         int ret;
2520
2521         mutex_lock(&mvm->mutex);
2522
2523         if (!vif->bss_conf.idle) {
2524                 ret = -EBUSY;
2525                 goto out;
2526         }
2527
2528         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2529
2530 out:
2531         mutex_unlock(&mvm->mutex);
2532         return ret;
2533 }
2534
2535 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2536                                        struct ieee80211_vif *vif)
2537 {
2538         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2539         int ret;
2540
2541         mutex_lock(&mvm->mutex);
2542
2543         /* Due to a race condition, it's possible that mac80211 asks
2544          * us to stop a sched_scan when it's already stopped.  This
2545          * can happen, for instance, if we stopped the scan ourselves,
2546          * called ieee80211_sched_scan_stopped() and the userspace called
2547          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2548          * could run.  To handle this, simply return if the scan is
2549          * not running.
2550         */
2551         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2552                 mutex_unlock(&mvm->mutex);
2553                 return 0;
2554         }
2555
2556         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2557         mutex_unlock(&mvm->mutex);
2558         iwl_mvm_wait_for_async_handlers(mvm);
2559
2560         return ret;
2561 }
2562
2563 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2564                                enum set_key_cmd cmd,
2565                                struct ieee80211_vif *vif,
2566                                struct ieee80211_sta *sta,
2567                                struct ieee80211_key_conf *key)
2568 {
2569         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2570         int ret;
2571         u8 key_offset;
2572
2573         if (iwlwifi_mod_params.sw_crypto) {
2574                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2575                 return -EOPNOTSUPP;
2576         }
2577
2578         switch (key->cipher) {
2579         case WLAN_CIPHER_SUITE_TKIP:
2580                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2581                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2582                 break;
2583         case WLAN_CIPHER_SUITE_CCMP:
2584                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2585                 break;
2586         case WLAN_CIPHER_SUITE_AES_CMAC:
2587                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2588                 break;
2589         case WLAN_CIPHER_SUITE_WEP40:
2590         case WLAN_CIPHER_SUITE_WEP104:
2591                 /* For non-client mode, only use WEP keys for TX as we probably
2592                  * don't have a station yet anyway and would then have to keep
2593                  * track of the keys, linking them to each of the clients/peers
2594                  * as they appear. For now, don't do that, for performance WEP
2595                  * offload doesn't really matter much, but we need it for some
2596                  * other offload features in client mode.
2597                  */
2598                 if (vif->type != NL80211_IFTYPE_STATION)
2599                         return 0;
2600                 break;
2601         default:
2602                 /* currently FW supports only one optional cipher scheme */
2603                 if (hw->n_cipher_schemes &&
2604                     hw->cipher_schemes->cipher == key->cipher)
2605                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2606                 else
2607                         return -EOPNOTSUPP;
2608         }
2609
2610         mutex_lock(&mvm->mutex);
2611
2612         switch (cmd) {
2613         case SET_KEY:
2614                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2615                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2616                         /*
2617                          * GTK on AP interface is a TX-only key, return 0;
2618                          * on IBSS they're per-station and because we're lazy
2619                          * we don't support them for RX, so do the same.
2620                          */
2621                         ret = 0;
2622                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2623                         break;
2624                 }
2625
2626                 /* During FW restart, in order to restore the state as it was,
2627                  * don't try to reprogram keys we previously failed for.
2628                  */
2629                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2630                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2631                         IWL_DEBUG_MAC80211(mvm,
2632                                            "skip invalid idx key programming during restart\n");
2633                         ret = 0;
2634                         break;
2635                 }
2636
2637                 /* in HW restart reuse the index, otherwise request a new one */
2638                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2639                         key_offset = key->hw_key_idx;
2640                 else
2641                         key_offset = STA_KEY_IDX_INVALID;
2642
2643                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2644                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2645                 if (ret) {
2646                         IWL_WARN(mvm, "set key failed\n");
2647                         /*
2648                          * can't add key for RX, but we don't need it
2649                          * in the device for TX so still return 0
2650                          */
2651                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2652                         ret = 0;
2653                 }
2654
2655                 break;
2656         case DISABLE_KEY:
2657                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2658                         ret = 0;
2659                         break;
2660                 }
2661
2662                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2663                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2664                 break;
2665         default:
2666                 ret = -EINVAL;
2667         }
2668
2669         mutex_unlock(&mvm->mutex);
2670         return ret;
2671 }
2672
2673 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2674                                         struct ieee80211_vif *vif,
2675                                         struct ieee80211_key_conf *keyconf,
2676                                         struct ieee80211_sta *sta,
2677                                         u32 iv32, u16 *phase1key)
2678 {
2679         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2680
2681         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2682                 return;
2683
2684         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2685 }
2686
2687
2688 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2689                                struct iwl_rx_packet *pkt, void *data)
2690 {
2691         struct iwl_mvm *mvm =
2692                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2693         struct iwl_hs20_roc_res *resp;
2694         int resp_len = iwl_rx_packet_payload_len(pkt);
2695         struct iwl_mvm_time_event_data *te_data = data;
2696
2697         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2698                 return true;
2699
2700         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2701                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2702                 return true;
2703         }
2704
2705         resp = (void *)pkt->data;
2706
2707         IWL_DEBUG_TE(mvm,
2708                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2709                      resp->status, resp->event_unique_id);
2710
2711         te_data->uid = le32_to_cpu(resp->event_unique_id);
2712         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2713                      te_data->uid);
2714
2715         spin_lock_bh(&mvm->time_event_lock);
2716         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2717         spin_unlock_bh(&mvm->time_event_lock);
2718
2719         return true;
2720 }
2721
2722 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2723 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2724 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2725 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2726 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2727 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2728                                     struct ieee80211_channel *channel,
2729                                     struct ieee80211_vif *vif,
2730                                     int duration)
2731 {
2732         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2733         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2734         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2735         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2736         struct iwl_notification_wait wait_time_event;
2737         u32 dtim_interval = vif->bss_conf.dtim_period *
2738                 vif->bss_conf.beacon_int;
2739         u32 req_dur, delay;
2740         struct iwl_hs20_roc_req aux_roc_req = {
2741                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2742                 .id_and_color =
2743                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2744                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2745                 /* Set the channel info data */
2746                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2747                         PHY_BAND_24 : PHY_BAND_5,
2748                 .channel_info.channel = channel->hw_value,
2749                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2750                 /* Set the time and duration */
2751                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2752          };
2753
2754         delay = AUX_ROC_MIN_DELAY;
2755         req_dur = MSEC_TO_TU(duration);
2756
2757         /*
2758          * If we are associated we want the delay time to be at least one
2759          * dtim interval so that the FW can wait until after the DTIM and
2760          * then start the time event, this will potentially allow us to
2761          * remain off-channel for the max duration.
2762          * Since we want to use almost a whole dtim interval we would also
2763          * like the delay to be for 2-3 dtim intervals, in case there are
2764          * other time events with higher priority.
2765          */
2766         if (vif->bss_conf.assoc) {
2767                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2768                 /* We cannot remain off-channel longer than the DTIM interval */
2769                 if (dtim_interval <= req_dur) {
2770                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2771                         if (req_dur <= AUX_ROC_MIN_DURATION)
2772                                 req_dur = dtim_interval -
2773                                         AUX_ROC_MIN_SAFETY_BUFFER;
2774                 }
2775         }
2776
2777         aux_roc_req.duration = cpu_to_le32(req_dur);
2778         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2779
2780         IWL_DEBUG_TE(mvm,
2781                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2782                      channel->hw_value, req_dur, duration, delay,
2783                      dtim_interval);
2784         /* Set the node address */
2785         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2786
2787         lockdep_assert_held(&mvm->mutex);
2788
2789         spin_lock_bh(&mvm->time_event_lock);
2790
2791         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2792                 spin_unlock_bh(&mvm->time_event_lock);
2793                 return -EIO;
2794         }
2795
2796         te_data->vif = vif;
2797         te_data->duration = duration;
2798         te_data->id = HOT_SPOT_CMD;
2799
2800         spin_unlock_bh(&mvm->time_event_lock);
2801
2802         /*
2803          * Use a notification wait, which really just processes the
2804          * command response and doesn't wait for anything, in order
2805          * to be able to process the response and get the UID inside
2806          * the RX path. Using CMD_WANT_SKB doesn't work because it
2807          * stores the buffer and then wakes up this thread, by which
2808          * time another notification (that the time event started)
2809          * might already be processed unsuccessfully.
2810          */
2811         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2812                                    time_event_response,
2813                                    ARRAY_SIZE(time_event_response),
2814                                    iwl_mvm_rx_aux_roc, te_data);
2815
2816         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2817                                    &aux_roc_req);
2818
2819         if (res) {
2820                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2821                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2822                 goto out_clear_te;
2823         }
2824
2825         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2826         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2827         /* should never fail */
2828         WARN_ON_ONCE(res);
2829
2830         if (res) {
2831  out_clear_te:
2832                 spin_lock_bh(&mvm->time_event_lock);
2833                 iwl_mvm_te_clear_data(mvm, te_data);
2834                 spin_unlock_bh(&mvm->time_event_lock);
2835         }
2836
2837         return res;
2838 }
2839
2840 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2841                        struct ieee80211_vif *vif,
2842                        struct ieee80211_channel *channel,
2843                        int duration,
2844                        enum ieee80211_roc_type type)
2845 {
2846         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2847         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2848         struct cfg80211_chan_def chandef;
2849         struct iwl_mvm_phy_ctxt *phy_ctxt;
2850         int ret, i;
2851
2852         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2853                            duration, type);
2854
2855         flush_work(&mvm->roc_done_wk);
2856
2857         mutex_lock(&mvm->mutex);
2858
2859         switch (vif->type) {
2860         case NL80211_IFTYPE_STATION:
2861                 if (fw_has_capa(&mvm->fw->ucode_capa,
2862                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2863                         /* Use aux roc framework (HS20) */
2864                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2865                                                        vif, duration);
2866                         goto out_unlock;
2867                 }
2868                 IWL_ERR(mvm, "hotspot not supported\n");
2869                 ret = -EINVAL;
2870                 goto out_unlock;
2871         case NL80211_IFTYPE_P2P_DEVICE:
2872                 /* handle below */
2873                 break;
2874         default:
2875                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2876                 ret = -EINVAL;
2877                 goto out_unlock;
2878         }
2879
2880         for (i = 0; i < NUM_PHY_CTX; i++) {
2881                 phy_ctxt = &mvm->phy_ctxts[i];
2882                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2883                         continue;
2884
2885                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2886                         /*
2887                          * Unbind the P2P_DEVICE from the current PHY context,
2888                          * and if the PHY context is not used remove it.
2889                          */
2890                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2891                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2892                                 goto out_unlock;
2893
2894                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2895
2896                         /* Bind the P2P_DEVICE to the current PHY Context */
2897                         mvmvif->phy_ctxt = phy_ctxt;
2898
2899                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2900                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2901                                 goto out_unlock;
2902
2903                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2904                         goto schedule_time_event;
2905                 }
2906         }
2907
2908         /* Need to update the PHY context only if the ROC channel changed */
2909         if (channel == mvmvif->phy_ctxt->channel)
2910                 goto schedule_time_event;
2911
2912         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2913
2914         /*
2915          * Change the PHY context configuration as it is currently referenced
2916          * only by the P2P Device MAC
2917          */
2918         if (mvmvif->phy_ctxt->ref == 1) {
2919                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2920                                                &chandef, 1, 1);
2921                 if (ret)
2922                         goto out_unlock;
2923         } else {
2924                 /*
2925                  * The PHY context is shared with other MACs. Need to remove the
2926                  * P2P Device from the binding, allocate an new PHY context and
2927                  * create a new binding
2928                  */
2929                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2930                 if (!phy_ctxt) {
2931                         ret = -ENOSPC;
2932                         goto out_unlock;
2933                 }
2934
2935                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2936                                                1, 1);
2937                 if (ret) {
2938                         IWL_ERR(mvm, "Failed to change PHY context\n");
2939                         goto out_unlock;
2940                 }
2941
2942                 /* Unbind the P2P_DEVICE from the current PHY context */
2943                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2944                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2945                         goto out_unlock;
2946
2947                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2948
2949                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2950                 mvmvif->phy_ctxt = phy_ctxt;
2951
2952                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2953                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2954                         goto out_unlock;
2955
2956                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2957         }
2958
2959 schedule_time_event:
2960         /* Schedule the time events */
2961         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2962
2963 out_unlock:
2964         mutex_unlock(&mvm->mutex);
2965         IWL_DEBUG_MAC80211(mvm, "leave\n");
2966         return ret;
2967 }
2968
2969 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2970 {
2971         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2972
2973         IWL_DEBUG_MAC80211(mvm, "enter\n");
2974
2975         mutex_lock(&mvm->mutex);
2976         iwl_mvm_stop_roc(mvm);
2977         mutex_unlock(&mvm->mutex);
2978
2979         IWL_DEBUG_MAC80211(mvm, "leave\n");
2980         return 0;
2981 }
2982
2983 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2984                                  struct ieee80211_chanctx_conf *ctx)
2985 {
2986         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2987         struct iwl_mvm_phy_ctxt *phy_ctxt;
2988         int ret;
2989
2990         lockdep_assert_held(&mvm->mutex);
2991
2992         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2993
2994         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2995         if (!phy_ctxt) {
2996                 ret = -ENOSPC;
2997                 goto out;
2998         }
2999
3000         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3001                                        ctx->rx_chains_static,
3002                                        ctx->rx_chains_dynamic);
3003         if (ret) {
3004                 IWL_ERR(mvm, "Failed to add PHY context\n");
3005                 goto out;
3006         }
3007
3008         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3009         *phy_ctxt_id = phy_ctxt->id;
3010 out:
3011         return ret;
3012 }
3013
3014 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3015                                struct ieee80211_chanctx_conf *ctx)
3016 {
3017         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3018         int ret;
3019
3020         mutex_lock(&mvm->mutex);
3021         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3022         mutex_unlock(&mvm->mutex);
3023
3024         return ret;
3025 }
3026
3027 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3028                                      struct ieee80211_chanctx_conf *ctx)
3029 {
3030         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3031         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3032
3033         lockdep_assert_held(&mvm->mutex);
3034
3035         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3036 }
3037
3038 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3039                                    struct ieee80211_chanctx_conf *ctx)
3040 {
3041         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3042
3043         mutex_lock(&mvm->mutex);
3044         __iwl_mvm_remove_chanctx(mvm, ctx);
3045         mutex_unlock(&mvm->mutex);
3046 }
3047
3048 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3049                                    struct ieee80211_chanctx_conf *ctx,
3050                                    u32 changed)
3051 {
3052         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3053         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3054         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3055
3056         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3057                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3058                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3059                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3060                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3061                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3062                       phy_ctxt->ref, changed))
3063                 return;
3064
3065         mutex_lock(&mvm->mutex);
3066         iwl_mvm_bt_coex_vif_change(mvm);
3067         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3068                                  ctx->rx_chains_static,
3069                                  ctx->rx_chains_dynamic);
3070         mutex_unlock(&mvm->mutex);
3071 }
3072
3073 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3074                                         struct ieee80211_vif *vif,
3075                                         struct ieee80211_chanctx_conf *ctx,
3076                                         bool switching_chanctx)
3077 {
3078         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3079         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3080         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3081         int ret;
3082
3083         lockdep_assert_held(&mvm->mutex);
3084
3085         mvmvif->phy_ctxt = phy_ctxt;
3086
3087         switch (vif->type) {
3088         case NL80211_IFTYPE_AP:
3089                 /* only needed if we're switching chanctx (i.e. during CSA) */
3090                 if (switching_chanctx) {
3091                         mvmvif->ap_ibss_active = true;
3092                         break;
3093                 }
3094         case NL80211_IFTYPE_ADHOC:
3095                 /*
3096                  * The AP binding flow is handled as part of the start_ap flow
3097                  * (in bss_info_changed), similarly for IBSS.
3098                  */
3099                 ret = 0;
3100                 goto out;
3101         case NL80211_IFTYPE_STATION:
3102                 break;
3103         case NL80211_IFTYPE_MONITOR:
3104                 /* always disable PS when a monitor interface is active */
3105                 mvmvif->ps_disabled = true;
3106                 break;
3107         default:
3108                 ret = -EINVAL;
3109                 goto out;
3110         }
3111
3112         ret = iwl_mvm_binding_add_vif(mvm, vif);
3113         if (ret)
3114                 goto out;
3115
3116         /*
3117          * Power state must be updated before quotas,
3118          * otherwise fw will complain.
3119          */
3120         iwl_mvm_power_update_mac(mvm);
3121
3122         /* Setting the quota at this stage is only required for monitor
3123          * interfaces. For the other types, the bss_info changed flow
3124          * will handle quota settings.
3125          */
3126         if (vif->type == NL80211_IFTYPE_MONITOR) {
3127                 mvmvif->monitor_active = true;
3128                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3129                 if (ret)
3130                         goto out_remove_binding;
3131
3132                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3133                 if (ret)
3134                         goto out_remove_binding;
3135
3136         }
3137
3138         /* Handle binding during CSA */
3139         if (vif->type == NL80211_IFTYPE_AP) {
3140                 iwl_mvm_update_quotas(mvm, false, NULL);
3141                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3142         }
3143
3144         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3145                 u32 duration = 2 * vif->bss_conf.beacon_int;
3146
3147                 /* iwl_mvm_protect_session() reads directly from the
3148                  * device (the system time), so make sure it is
3149                  * available.
3150                  */
3151                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3152                 if (ret)
3153                         goto out_remove_binding;
3154
3155                 /* Protect the session to make sure we hear the first
3156                  * beacon on the new channel.
3157                  */
3158                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3159                                         vif->bss_conf.beacon_int / 2,
3160                                         true);
3161
3162                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3163
3164                 iwl_mvm_update_quotas(mvm, false, NULL);
3165         }
3166
3167         goto out;
3168
3169 out_remove_binding:
3170         iwl_mvm_binding_remove_vif(mvm, vif);
3171         iwl_mvm_power_update_mac(mvm);
3172 out:
3173         if (ret)
3174                 mvmvif->phy_ctxt = NULL;
3175         return ret;
3176 }
3177 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3178                                       struct ieee80211_vif *vif,
3179                                       struct ieee80211_chanctx_conf *ctx)
3180 {
3181         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3182         int ret;
3183
3184         mutex_lock(&mvm->mutex);
3185         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3186         mutex_unlock(&mvm->mutex);
3187
3188         return ret;
3189 }
3190
3191 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3192                                            struct ieee80211_vif *vif,
3193                                            struct ieee80211_chanctx_conf *ctx,
3194                                            bool switching_chanctx)
3195 {
3196         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3197         struct ieee80211_vif *disabled_vif = NULL;
3198
3199         lockdep_assert_held(&mvm->mutex);
3200
3201         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3202
3203         switch (vif->type) {
3204         case NL80211_IFTYPE_ADHOC:
3205                 goto out;
3206         case NL80211_IFTYPE_MONITOR:
3207                 mvmvif->monitor_active = false;
3208                 mvmvif->ps_disabled = false;
3209                 iwl_mvm_rm_snif_sta(mvm, vif);
3210                 break;
3211         case NL80211_IFTYPE_AP:
3212                 /* This part is triggered only during CSA */
3213                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3214                         goto out;
3215
3216                 mvmvif->csa_countdown = false;
3217
3218                 /* Set CS bit on all the stations */
3219                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3220
3221                 /* Save blocked iface, the timeout is set on the next beacon */
3222                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3223
3224                 mvmvif->ap_ibss_active = false;
3225                 break;
3226         case NL80211_IFTYPE_STATION:
3227                 if (!switching_chanctx)
3228                         break;
3229
3230                 disabled_vif = vif;
3231
3232                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3233                 break;
3234         default:
3235                 break;
3236         }
3237
3238         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3239         iwl_mvm_binding_remove_vif(mvm, vif);
3240
3241 out:
3242         mvmvif->phy_ctxt = NULL;
3243         iwl_mvm_power_update_mac(mvm);
3244 }
3245
3246 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3247                                          struct ieee80211_vif *vif,
3248                                          struct ieee80211_chanctx_conf *ctx)
3249 {
3250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3251
3252         mutex_lock(&mvm->mutex);
3253         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3254         mutex_unlock(&mvm->mutex);
3255 }
3256
3257 static int
3258 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3259                                 struct ieee80211_vif_chanctx_switch *vifs)
3260 {
3261         int ret;
3262
3263         mutex_lock(&mvm->mutex);
3264         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3265         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3266
3267         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3268         if (ret) {
3269                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3270                 goto out_reassign;
3271         }
3272
3273         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3274                                            true);
3275         if (ret) {
3276                 IWL_ERR(mvm,
3277                         "failed to assign new_ctx during channel switch\n");
3278                 goto out_remove;
3279         }
3280
3281         /* we don't support TDLS during DCM - can be caused by channel switch */
3282         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3283                 iwl_mvm_teardown_tdls_peers(mvm);
3284
3285         goto out;
3286
3287 out_remove:
3288         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3289
3290 out_reassign:
3291         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3292                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3293                 goto out_restart;
3294         }
3295
3296         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3297                                          true)) {
3298                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3299                 goto out_restart;
3300         }
3301
3302         goto out;
3303
3304 out_restart:
3305         /* things keep failing, better restart the hw */
3306         iwl_mvm_nic_restart(mvm, false);
3307
3308 out:
3309         mutex_unlock(&mvm->mutex);
3310
3311         return ret;
3312 }
3313
3314 static int
3315 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3316                                     struct ieee80211_vif_chanctx_switch *vifs)
3317 {
3318         int ret;
3319
3320         mutex_lock(&mvm->mutex);
3321         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3322
3323         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3324                                            true);
3325         if (ret) {
3326                 IWL_ERR(mvm,
3327                         "failed to assign new_ctx during channel switch\n");
3328                 goto out_reassign;
3329         }
3330
3331         goto out;
3332
3333 out_reassign:
3334         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3335                                          true)) {
3336                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3337                 goto out_restart;
3338         }
3339
3340         goto out;
3341
3342 out_restart:
3343         /* things keep failing, better restart the hw */
3344         iwl_mvm_nic_restart(mvm, false);
3345
3346 out:
3347         mutex_unlock(&mvm->mutex);
3348
3349         return ret;
3350 }
3351
3352 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3353                                       struct ieee80211_vif_chanctx_switch *vifs,
3354                                       int n_vifs,
3355                                       enum ieee80211_chanctx_switch_mode mode)
3356 {
3357         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3358         int ret;
3359
3360         /* we only support a single-vif right now */
3361         if (n_vifs > 1)
3362                 return -EOPNOTSUPP;
3363
3364         switch (mode) {
3365         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3366                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3367                 break;
3368         case CHANCTX_SWMODE_REASSIGN_VIF:
3369                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3370                 break;
3371         default:
3372                 ret = -EOPNOTSUPP;
3373                 break;
3374         }
3375
3376         return ret;
3377 }
3378
3379 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3380                            struct ieee80211_sta *sta,
3381                            bool set)
3382 {
3383         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3384         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3385
3386         if (!mvm_sta || !mvm_sta->vif) {
3387                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3388                 return -EINVAL;
3389         }
3390
3391         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3392 }
3393
3394 #ifdef CONFIG_NL80211_TESTMODE
3395 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3396         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3397         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3398         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3399 };
3400
3401 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3402                                       struct ieee80211_vif *vif,
3403                                       void *data, int len)
3404 {
3405         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3406         int err;
3407         u32 noa_duration;
3408
3409         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3410         if (err)
3411                 return err;
3412
3413         if (!tb[IWL_MVM_TM_ATTR_CMD])
3414                 return -EINVAL;
3415
3416         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3417         case IWL_MVM_TM_CMD_SET_NOA:
3418                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3419                     !vif->bss_conf.enable_beacon ||
3420                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3421                         return -EINVAL;
3422
3423                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3424                 if (noa_duration >= vif->bss_conf.beacon_int)
3425                         return -EINVAL;
3426
3427                 mvm->noa_duration = noa_duration;
3428                 mvm->noa_vif = vif;
3429
3430                 return iwl_mvm_update_quotas(mvm, false, NULL);
3431         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3432                 /* must be associated client vif - ignore authorized */
3433                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3434                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3435                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3436                         return -EINVAL;
3437
3438                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3439                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3440                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3441         }
3442
3443         return -EOPNOTSUPP;
3444 }
3445
3446 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3447                                     struct ieee80211_vif *vif,
3448                                     void *data, int len)
3449 {
3450         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3451         int err;
3452
3453         mutex_lock(&mvm->mutex);
3454         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3455         mutex_unlock(&mvm->mutex);
3456
3457         return err;
3458 }
3459 #endif
3460
3461 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3462                                    struct ieee80211_vif *vif,
3463                                    struct ieee80211_channel_switch *chsw)
3464 {
3465         /* By implementing this operation, we prevent mac80211 from
3466          * starting its own channel switch timer, so that we can call
3467          * ieee80211_chswitch_done() ourselves at the right time
3468          * (which is when the absence time event starts).
3469          */
3470
3471         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3472                            "dummy channel switch op\n");
3473 }
3474
3475 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3476                                       struct ieee80211_vif *vif,
3477                                       struct ieee80211_channel_switch *chsw)
3478 {
3479         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3480         struct ieee80211_vif *csa_vif;
3481         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3482         u32 apply_time;
3483         int ret;
3484
3485         mutex_lock(&mvm->mutex);
3486
3487         mvmvif->csa_failed = false;
3488
3489         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3490                            chsw->chandef.center_freq1);
3491
3492         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3493
3494         switch (vif->type) {
3495         case NL80211_IFTYPE_AP:
3496                 csa_vif =
3497                         rcu_dereference_protected(mvm->csa_vif,
3498                                                   lockdep_is_held(&mvm->mutex));
3499                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3500                               "Another CSA is already in progress")) {
3501                         ret = -EBUSY;
3502                         goto out_unlock;
3503                 }
3504
3505                 rcu_assign_pointer(mvm->csa_vif, vif);
3506
3507                 if (WARN_ONCE(mvmvif->csa_countdown,
3508                               "Previous CSA countdown didn't complete")) {
3509                         ret = -EBUSY;
3510                         goto out_unlock;
3511                 }
3512
3513                 break;
3514         case NL80211_IFTYPE_STATION:
3515                 /* Schedule the time event to a bit before beacon 1,
3516                  * to make sure we're in the new channel when the
3517                  * GO/AP arrives.
3518                  */
3519                 apply_time = chsw->device_timestamp +
3520                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3521                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3522
3523                 if (chsw->block_tx)
3524                         iwl_mvm_csa_client_absent(mvm, vif);
3525
3526                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3527                                             apply_time);
3528                 if (mvmvif->bf_data.bf_enabled) {
3529                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3530                         if (ret)
3531                                 goto out_unlock;
3532                 }
3533
3534                 break;
3535         default:
3536                 break;
3537         }
3538
3539         mvmvif->ps_disabled = true;
3540
3541         ret = iwl_mvm_power_update_ps(mvm);
3542         if (ret)
3543                 goto out_unlock;
3544
3545         /* we won't be on this channel any longer */
3546         iwl_mvm_teardown_tdls_peers(mvm);
3547
3548 out_unlock:
3549         mutex_unlock(&mvm->mutex);
3550
3551         return ret;
3552 }
3553
3554 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3555                                        struct ieee80211_vif *vif)
3556 {
3557         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3558         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3559         int ret;
3560
3561         mutex_lock(&mvm->mutex);
3562
3563         if (mvmvif->csa_failed) {
3564                 mvmvif->csa_failed = false;
3565                 ret = -EIO;
3566                 goto out_unlock;
3567         }
3568
3569         if (vif->type == NL80211_IFTYPE_STATION) {
3570                 struct iwl_mvm_sta *mvmsta;
3571
3572                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3573                                                           mvmvif->ap_sta_id);
3574
3575                 if (WARN_ON(!mvmsta)) {
3576                         ret = -EIO;
3577                         goto out_unlock;
3578                 }
3579
3580                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3581
3582                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3583
3584                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3585                 if (ret)
3586                         goto out_unlock;
3587
3588                 iwl_mvm_stop_session_protection(mvm, vif);
3589         }
3590
3591         mvmvif->ps_disabled = false;
3592
3593         ret = iwl_mvm_power_update_ps(mvm);
3594
3595 out_unlock:
3596         mutex_unlock(&mvm->mutex);
3597
3598         return ret;
3599 }
3600
3601 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3602                               struct ieee80211_vif *vif, u32 queues, bool drop)
3603 {
3604         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3605         struct iwl_mvm_vif *mvmvif;
3606         struct iwl_mvm_sta *mvmsta;
3607         struct ieee80211_sta *sta;
3608         int i;
3609         u32 msk = 0;
3610
3611         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3612                 return;
3613
3614         mutex_lock(&mvm->mutex);
3615         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3616
3617         /* flush the AP-station and all TDLS peers */
3618         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3619                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3620                                                 lockdep_is_held(&mvm->mutex));
3621                 if (IS_ERR_OR_NULL(sta))
3622                         continue;
3623
3624                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3625                 if (mvmsta->vif != vif)
3626                         continue;
3627
3628                 /* make sure only TDLS peers or the AP are flushed */
3629                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3630
3631                 msk |= mvmsta->tfd_queue_msk;
3632         }
3633
3634         if (drop) {
3635                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3636                         IWL_ERR(mvm, "flush request fail\n");
3637                 mutex_unlock(&mvm->mutex);
3638         } else {
3639                 mutex_unlock(&mvm->mutex);
3640
3641                 /* this can take a while, and we may need/want other operations
3642                  * to succeed while doing this, so do it without the mutex held
3643                  */
3644                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3645         }
3646 }
3647
3648 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3649                                   struct survey_info *survey)
3650 {
3651         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3652         int ret;
3653
3654         memset(survey, 0, sizeof(*survey));
3655
3656         /* only support global statistics right now */
3657         if (idx != 0)
3658                 return -ENOENT;
3659
3660         if (fw_has_capa(&mvm->fw->ucode_capa,
3661                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3662                 return -ENOENT;
3663
3664         mutex_lock(&mvm->mutex);
3665
3666         if (mvm->ucode_loaded) {
3667                 ret = iwl_mvm_request_statistics(mvm, false);
3668                 if (ret)
3669                         goto out;
3670         }
3671
3672         survey->filled = SURVEY_INFO_TIME |
3673                          SURVEY_INFO_TIME_RX |
3674                          SURVEY_INFO_TIME_TX |
3675                          SURVEY_INFO_TIME_SCAN;
3676         survey->time = mvm->accu_radio_stats.on_time_rf +
3677                        mvm->radio_stats.on_time_rf;
3678         do_div(survey->time, USEC_PER_MSEC);
3679
3680         survey->time_rx = mvm->accu_radio_stats.rx_time +
3681                           mvm->radio_stats.rx_time;
3682         do_div(survey->time_rx, USEC_PER_MSEC);
3683
3684         survey->time_tx = mvm->accu_radio_stats.tx_time +
3685                           mvm->radio_stats.tx_time;
3686         do_div(survey->time_tx, USEC_PER_MSEC);
3687
3688         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3689                             mvm->radio_stats.on_time_scan;
3690         do_div(survey->time_scan, USEC_PER_MSEC);
3691
3692         ret = 0;
3693  out:
3694         mutex_unlock(&mvm->mutex);
3695         return ret;
3696 }
3697
3698 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3699                                        struct ieee80211_vif *vif,
3700                                        struct ieee80211_sta *sta,
3701                                        struct station_info *sinfo)
3702 {
3703         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3704         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3705         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3706
3707         if (fw_has_capa(&mvm->fw->ucode_capa,
3708                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3709                 return;
3710
3711         /* if beacon filtering isn't on mac80211 does it anyway */
3712         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3713                 return;
3714
3715         if (!vif->bss_conf.assoc)
3716                 return;
3717
3718         mutex_lock(&mvm->mutex);
3719
3720         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3721                 goto unlock;
3722
3723         if (iwl_mvm_request_statistics(mvm, false))
3724                 goto unlock;
3725
3726         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3727                            mvmvif->beacon_stats.accu_num_beacons;
3728         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3729         if (mvmvif->beacon_stats.avg_signal) {
3730                 /* firmware only reports a value after RXing a few beacons */
3731                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3732                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3733         }
3734  unlock:
3735         mutex_unlock(&mvm->mutex);
3736 }
3737
3738 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3739                                         struct ieee80211_vif *vif,
3740                                         const struct ieee80211_event *event)
3741 {
3742 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3743         do {                                                    \
3744                 if ((_cnt) && --(_cnt))                         \
3745                         break;                                  \
3746                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3747         } while (0)
3748
3749         struct iwl_fw_dbg_trigger_tlv *trig;
3750         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3751
3752         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3753                 return;
3754
3755         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3756         trig_mlme = (void *)trig->data;
3757         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3758                 return;
3759
3760         if (event->u.mlme.data == ASSOC_EVENT) {
3761                 if (event->u.mlme.status == MLME_DENIED)
3762                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3763                                            trig_mlme->stop_assoc_denied,
3764                                            "DENIED ASSOC: reason %d",
3765                                             event->u.mlme.reason);
3766                 else if (event->u.mlme.status == MLME_TIMEOUT)
3767                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3768                                            trig_mlme->stop_assoc_timeout,
3769                                            "ASSOC TIMEOUT");
3770         } else if (event->u.mlme.data == AUTH_EVENT) {
3771                 if (event->u.mlme.status == MLME_DENIED)
3772                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3773                                            trig_mlme->stop_auth_denied,
3774                                            "DENIED AUTH: reason %d",
3775                                            event->u.mlme.reason);
3776                 else if (event->u.mlme.status == MLME_TIMEOUT)
3777                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3778                                            trig_mlme->stop_auth_timeout,
3779                                            "AUTH TIMEOUT");
3780         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3781                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3782                                    trig_mlme->stop_rx_deauth,
3783                                    "DEAUTH RX %d", event->u.mlme.reason);
3784         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3785                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3786                                    trig_mlme->stop_tx_deauth,
3787                                    "DEAUTH TX %d", event->u.mlme.reason);
3788         }
3789 #undef CHECK_MLME_TRIGGER
3790 }
3791
3792 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3793                                           struct ieee80211_vif *vif,
3794                                           const struct ieee80211_event *event)
3795 {
3796         struct iwl_fw_dbg_trigger_tlv *trig;
3797         struct iwl_fw_dbg_trigger_ba *ba_trig;
3798
3799         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3800                 return;
3801
3802         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3803         ba_trig = (void *)trig->data;
3804         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3805                 return;
3806
3807         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3808                 return;
3809
3810         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3811                                     "BAR received from %pM, tid %d, ssn %d",
3812                                     event->u.ba.sta->addr, event->u.ba.tid,
3813                                     event->u.ba.ssn);
3814 }
3815
3816 static void
3817 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3818                                      struct ieee80211_vif *vif,
3819                                      const struct ieee80211_event *event)
3820 {
3821         struct iwl_fw_dbg_trigger_tlv *trig;
3822         struct iwl_fw_dbg_trigger_ba *ba_trig;
3823
3824         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3825                 return;
3826
3827         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3828         ba_trig = (void *)trig->data;
3829         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3830                 return;
3831
3832         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3833                 return;
3834
3835         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3836                                     "Frame from %pM timed out, tid %d",
3837                                     event->u.ba.sta->addr, event->u.ba.tid);
3838 }
3839
3840 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3841                                        struct ieee80211_vif *vif,
3842                                        const struct ieee80211_event *event)
3843 {
3844         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3845
3846         switch (event->type) {
3847         case MLME_EVENT:
3848                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3849                 break;
3850         case BAR_RX_EVENT:
3851                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3852                 break;
3853         case BA_FRAME_TIMEOUT:
3854                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3855                 break;
3856         default:
3857                 break;
3858         }
3859 }
3860
3861 const struct ieee80211_ops iwl_mvm_hw_ops = {
3862         .tx = iwl_mvm_mac_tx,
3863         .ampdu_action = iwl_mvm_mac_ampdu_action,
3864         .start = iwl_mvm_mac_start,
3865         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3866         .stop = iwl_mvm_mac_stop,
3867         .add_interface = iwl_mvm_mac_add_interface,
3868         .remove_interface = iwl_mvm_mac_remove_interface,
3869         .config = iwl_mvm_mac_config,
3870         .prepare_multicast = iwl_mvm_prepare_multicast,
3871         .configure_filter = iwl_mvm_configure_filter,
3872         .config_iface_filter = iwl_mvm_config_iface_filter,
3873         .bss_info_changed = iwl_mvm_bss_info_changed,
3874         .hw_scan = iwl_mvm_mac_hw_scan,
3875         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3876         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3877         .sta_state = iwl_mvm_mac_sta_state,
3878         .sta_notify = iwl_mvm_mac_sta_notify,
3879         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3880         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3881         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3882         .sta_rc_update = iwl_mvm_sta_rc_update,
3883         .conf_tx = iwl_mvm_mac_conf_tx,
3884         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3885         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3886         .flush = iwl_mvm_mac_flush,
3887         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3888         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3889         .set_key = iwl_mvm_mac_set_key,
3890         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3891         .remain_on_channel = iwl_mvm_roc,
3892         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3893         .add_chanctx = iwl_mvm_add_chanctx,
3894         .remove_chanctx = iwl_mvm_remove_chanctx,
3895         .change_chanctx = iwl_mvm_change_chanctx,
3896         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3897         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3898         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3899
3900         .start_ap = iwl_mvm_start_ap_ibss,
3901         .stop_ap = iwl_mvm_stop_ap_ibss,
3902         .join_ibss = iwl_mvm_start_ap_ibss,
3903         .leave_ibss = iwl_mvm_stop_ap_ibss,
3904
3905         .set_tim = iwl_mvm_set_tim,
3906
3907         .channel_switch = iwl_mvm_channel_switch,
3908         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3909         .post_channel_switch = iwl_mvm_post_channel_switch,
3910
3911         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3912         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3913         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3914
3915         .event_callback = iwl_mvm_mac_event_callback,
3916
3917         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3918
3919 #ifdef CONFIG_PM_SLEEP
3920         /* look at d3.c */
3921         .suspend = iwl_mvm_suspend,
3922         .resume = iwl_mvm_resume,
3923         .set_wakeup = iwl_mvm_set_wakeup,
3924         .set_rekey_data = iwl_mvm_set_rekey_data,
3925 #if IS_ENABLED(CONFIG_IPV6)
3926         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3927 #endif
3928         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3929 #endif
3930         .get_survey = iwl_mvm_mac_get_survey,
3931         .sta_statistics = iwl_mvm_mac_sta_statistics,
3932 };