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
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  23  * USA
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  29  *  Intel Linux Wireless <linuxwifi@intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  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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  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         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 443
 444         if (mvm->trans->max_skb_frags)
 445                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 446
 447         hw->queues = mvm->first_agg_queue;
 448         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 449         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 450                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 451         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 452                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 453         hw->rate_control_algorithm = "iwl-mvm-rs";
 454         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 455         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 456
 457         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
 458         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 459         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 460         hw->wiphy->cipher_suites = mvm->ciphers;
 461
 462         /*
 463          * Enable 11w if advertised by firmware and software crypto
 464          * is not enabled (as the firmware will interpret some mgmt
 465          * packets, so enabling it with software crypto isn't safe)
 466          */
 467         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 468             !iwlwifi_mod_params.sw_crypto) {
 469                 ieee80211_hw_set(hw, MFP_CAPABLE);
 470                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 471                         WLAN_CIPHER_SUITE_AES_CMAC;
 472                 hw->wiphy->n_cipher_suites++;
 473         }
 474
 475         /* currently FW API supports only one optional cipher scheme */
 476         if (mvm->fw->cs[0].cipher) {
 477                 mvm->hw->n_cipher_schemes = 1;
 478                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 479                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 480                         mvm->fw->cs[0].cipher;
 481                 hw->wiphy->n_cipher_suites++;
 482         }
 483
 484         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 485         hw->wiphy->features |=
 486                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 487                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 488                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 489
 490         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 491         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 492         hw->chanctx_data_size = sizeof(u16);
 493
 494         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 495                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 496                 BIT(NL80211_IFTYPE_AP) |
 497                 BIT(NL80211_IFTYPE_P2P_GO) |
 498                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 499                 BIT(NL80211_IFTYPE_ADHOC);
 500
 501         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 502         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 503         if (iwl_mvm_is_lar_supported(mvm))
 504                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 505         else
 506                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 507                                                REGULATORY_DISABLE_BEACON_HINTS;
 508
 509         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 510                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 511
 512         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 513
 514         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 515         hw->wiphy->n_iface_combinations =
 516                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 517
 518         hw->wiphy->max_remain_on_channel_duration = 10000;
 519         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 520         /* we can compensate an offset of up to 3 channels = 15 MHz */
 521         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 522
 523         /* Extract MAC address */
 524         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 525         hw->wiphy->addresses = mvm->addresses;
 526         hw->wiphy->n_addresses = 1;
 527
 528         /* Extract additional MAC addresses if available */
 529         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 530                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 531
 532         for (i = 1; i < num_mac; i++) {
 533                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 534                        ETH_ALEN);
 535                 mvm->addresses[i].addr[5]++;
 536                 hw->wiphy->n_addresses++;
 537         }
 538
 539         iwl_mvm_reset_phy_ctxts(mvm);
 540
 541         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 542
 543         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 544
 545         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 546         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 547                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 548
 549         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 550                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 551         else
 552                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 553
 554         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 555                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 556                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 557         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 558                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 559                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 560
 561                 if (fw_has_capa(&mvm->fw->ucode_capa,
 562                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 563                     fw_has_api(&mvm->fw->ucode_capa,
 564                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 565                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 566                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 567         }
 568
 569         hw->wiphy->hw_version = mvm->trans->hw_id;
 570
 571         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 572                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 573         else
 574                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 575
 576         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 577         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 578         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 579         /* we create the 802.11 header and zero length SSID IE. */
 580         hw->wiphy->max_sched_scan_ie_len =
 581                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 582         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 583         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 584
 585         /*
 586          * the firmware uses u8 for num of iterations, but 0xff is saved for
 587          * infinite loop, so the maximum number of iterations is actually 254.
 588          */
 589         hw->wiphy->max_sched_scan_plan_iterations = 254;
 590
 591         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 592                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 593                                NL80211_FEATURE_P2P_GO_OPPPS |
 594                                NL80211_FEATURE_DYNAMIC_SMPS |
 595                                NL80211_FEATURE_STATIC_SMPS |
 596                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 597
 598         if (fw_has_capa(&mvm->fw->ucode_capa,
 599                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 600                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 601         if (fw_has_capa(&mvm->fw->ucode_capa,
 602                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 603                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 604
 605         if (fw_has_capa(&mvm->fw->ucode_capa,
 606                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 607                 hw->wiphy->features |=
 608                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 609
 610         if (fw_has_capa(&mvm->fw->ucode_capa,
 611                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 612                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 613
 614         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 615
 616 #ifdef CONFIG_PM_SLEEP
 617         if (iwl_mvm_is_d0i3_supported(mvm) &&
 618             device_can_wakeup(mvm->trans->dev)) {
 619                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 620                 hw->wiphy->wowlan = &mvm->wowlan;
 621         }
 622
 623         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 624             mvm->trans->ops->d3_suspend &&
 625             mvm->trans->ops->d3_resume &&
 626             device_can_wakeup(mvm->trans->dev)) {
 627                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 628                                      WIPHY_WOWLAN_DISCONNECT |
 629                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 630                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 631                                      WIPHY_WOWLAN_NET_DETECT;
 632                 if (!iwlwifi_mod_params.sw_crypto)
 633                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 634                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 635                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 636
 637                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 638                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 639                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 640                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 641                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 642                 hw->wiphy->wowlan = &mvm->wowlan;
 643         }
 644 #endif
 645
 646 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 647         /* assign default bcast filtering configuration */
 648         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 649 #endif
 650
 651         ret = iwl_mvm_leds_init(mvm);
 652         if (ret)
 653                 return ret;
 654
 655         if (fw_has_capa(&mvm->fw->ucode_capa,
 656                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 657                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 658                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 659                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 660         }
 661
 662         if (fw_has_capa(&mvm->fw->ucode_capa,
 663                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 664                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 665                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 666         }
 667
 668         hw->netdev_features |= mvm->cfg->features;
 669         if (!iwl_mvm_is_csum_supported(mvm))
 670                 hw->netdev_features &= ~NETIF_F_RXCSUM;
 671
 672         if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 673                 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 674                         NETIF_F_TSO | NETIF_F_TSO6;
 675
 676         ret = ieee80211_register_hw(mvm->hw);
 677         if (ret)
 678                 iwl_mvm_leds_exit(mvm);
 679
 680         return ret;
 681 }
 682
 683 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 684                              struct ieee80211_sta *sta,
 685                              struct sk_buff *skb)
 686 {
 687         struct iwl_mvm_sta *mvmsta;
 688         bool defer = false;
 689
 690         /*
 691          * double check the IN_D0I3 flag both before and after
 692          * taking the spinlock, in order to prevent taking
 693          * the spinlock when not needed.
 694          */
 695         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 696                 return false;
 697
 698         spin_lock(&mvm->d0i3_tx_lock);
 699         /*
 700          * testing the flag again ensures the skb dequeue
 701          * loop (on d0i3 exit) hasn't run yet.
 702          */
 703         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 704                 goto out;
 705
 706         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 707         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 708             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 709                 goto out;
 710
 711         __skb_queue_tail(&mvm->d0i3_tx, skb);
 712         ieee80211_stop_queues(mvm->hw);
 713
 714         /* trigger wakeup */
 715         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 716         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 717
 718         defer = true;
 719 out:
 720         spin_unlock(&mvm->d0i3_tx_lock);
 721         return defer;
 722 }
 723
 724 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 725                            struct ieee80211_tx_control *control,
 726                            struct sk_buff *skb)
 727 {
 728         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 729         struct ieee80211_sta *sta = control->sta;
 730         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 731         struct ieee80211_hdr *hdr = (void *)skb->data;
 732
 733         if (iwl_mvm_is_radio_killed(mvm)) {
 734                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 735                 goto drop;
 736         }
 737
 738         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 739             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 740             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 741                 goto drop;
 742
 743         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 744         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 745                      ieee80211_is_mgmt(hdr->frame_control) &&
 746                      !ieee80211_is_deauth(hdr->frame_control) &&
 747                      !ieee80211_is_disassoc(hdr->frame_control) &&
 748                      !ieee80211_is_action(hdr->frame_control)))
 749                 sta = NULL;
 750
 751         if (sta) {
 752                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 753                         return;
 754                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 755                         goto drop;
 756                 return;
 757         }
 758
 759         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 760                 goto drop;
 761         return;
 762  drop:
 763         ieee80211_free_txskb(hw, skb);
 764 }
 765
 766 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 767 {
 768         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 769                 return false;
 770         return true;
 771 }
 772
 773 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 774 {
 775         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 776                 return false;
 777         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 778                 return true;
 779
 780         /* enabled by default */
 781         return true;
 782 }
 783
 784 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 785         do {                                                    \
 786                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 787                         break;                                  \
 788                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 789         } while (0)
 790
 791 static void
 792 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 793                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 794                             enum ieee80211_ampdu_mlme_action action)
 795 {
 796         struct iwl_fw_dbg_trigger_tlv *trig;
 797         struct iwl_fw_dbg_trigger_ba *ba_trig;
 798
 799         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 800                 return;
 801
 802         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 803         ba_trig = (void *)trig->data;
 804
 805         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 806                 return;
 807
 808         switch (action) {
 809         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 810                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 811                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 812
 813                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 814                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 815                                  sta->addr, tid, tid_data->ssn);
 816                 break;
 817                 }
 818         case IEEE80211_AMPDU_TX_STOP_CONT:
 819                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 820                                  "TX AGG STOP: MAC %pM tid %d\n",
 821                                  sta->addr, tid);
 822                 break;
 823         case IEEE80211_AMPDU_RX_START:
 824                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 825                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 826                                  sta->addr, tid, rx_ba_ssn);
 827                 break;
 828         case IEEE80211_AMPDU_RX_STOP:
 829                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 830                                  "RX AGG STOP: MAC %pM tid %d\n",
 831                                  sta->addr, tid);
 832                 break;
 833         default:
 834                 break;
 835         }
 836 }
 837
 838 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 839                                     struct ieee80211_vif *vif,
 840                                     enum ieee80211_ampdu_mlme_action action,
 841                                     struct ieee80211_sta *sta, u16 tid,
 842                                     u16 *ssn, u8 buf_size, bool amsdu)
 843 {
 844         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 845         int ret;
 846         bool tx_agg_ref = false;
 847
 848         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 849                      sta->addr, tid, action);
 850
 851         if (!(mvm->nvm_data->sku_cap_11n_enable))
 852                 return -EACCES;
 853
 854         /* return from D0i3 before starting a new Tx aggregation */
 855         switch (action) {
 856         case IEEE80211_AMPDU_TX_START:
 857         case IEEE80211_AMPDU_TX_STOP_CONT:
 858         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 859         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 860         case IEEE80211_AMPDU_TX_OPERATIONAL:
 861                 /*
 862                  * for tx start, wait synchronously until D0i3 exit to
 863                  * get the correct sequence number for the tid.
 864                  * additionally, some other ampdu actions use direct
 865                  * target access, which is not handled automatically
 866                  * by the trans layer (unlike commands), so wait for
 867                  * d0i3 exit in these cases as well.
 868                  */
 869                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 870                 if (ret)
 871                         return ret;
 872
 873                 tx_agg_ref = true;
 874                 break;
 875         default:
 876                 break;
 877         }
 878
 879         mutex_lock(&mvm->mutex);
 880
 881         switch (action) {
 882         case IEEE80211_AMPDU_RX_START:
 883                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 884                         ret = -EINVAL;
 885                         break;
 886                 }
 887                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 888                 break;
 889         case IEEE80211_AMPDU_RX_STOP:
 890                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 891                 break;
 892         case IEEE80211_AMPDU_TX_START:
 893                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 894                         ret = -EINVAL;
 895                         break;
 896                 }
 897                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 898                 break;
 899         case IEEE80211_AMPDU_TX_STOP_CONT:
 900                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 901                 break;
 902         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 903         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 904                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 905                 break;
 906         case IEEE80211_AMPDU_TX_OPERATIONAL:
 907                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 908                 break;
 909         default:
 910                 WARN_ON_ONCE(1);
 911                 ret = -EINVAL;
 912                 break;
 913         }
 914
 915         if (!ret) {
 916                 u16 rx_ba_ssn = 0;
 917
 918                 if (action == IEEE80211_AMPDU_RX_START)
 919                         rx_ba_ssn = *ssn;
 920
 921                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 922                                             rx_ba_ssn, action);
 923         }
 924         mutex_unlock(&mvm->mutex);
 925
 926         /*
 927          * If the tid is marked as started, we won't use it for offloaded
 928          * traffic on the next D0i3 entry. It's safe to unref.
 929          */
 930         if (tx_agg_ref)
 931                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 932
 933         return ret;
 934 }
 935
 936 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 937                                      struct ieee80211_vif *vif)
 938 {
 939         struct iwl_mvm *mvm = data;
 940         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 941
 942         mvmvif->uploaded = false;
 943         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 944
 945         spin_lock_bh(&mvm->time_event_lock);
 946         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 947         spin_unlock_bh(&mvm->time_event_lock);
 948
 949         mvmvif->phy_ctxt = NULL;
 950         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 951 }
 952
 953 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 954 {
 955         /* clear the D3 reconfig, we only need it to avoid dumping a
 956          * firmware coredump on reconfiguration, we shouldn't do that
 957          * on D3->D0 transition
 958          */
 959         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 960                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 961                 iwl_mvm_fw_error_dump(mvm);
 962         }
 963
 964         /* cleanup all stale references (scan, roc), but keep the
 965          * ucode_down ref until reconfig is complete
 966          */
 967         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 968
 969         iwl_trans_stop_device(mvm->trans);
 970
 971         mvm->scan_status = 0;
 972         mvm->ps_disabled = false;
 973         mvm->calibrating = false;
 974
 975         /* just in case one was running */
 976         iwl_mvm_cleanup_roc_te(mvm);
 977         ieee80211_remain_on_channel_expired(mvm->hw);
 978
 979         /*
 980          * cleanup all interfaces, even inactive ones, as some might have
 981          * gone down during the HW restart
 982          */
 983         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 984
 985         mvm->p2p_device_vif = NULL;
 986         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 987
 988         iwl_mvm_reset_phy_ctxts(mvm);
 989         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 990         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 991         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 992         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 993         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 994         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 995         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 996         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 997         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 998
 999         ieee80211_wake_queues(mvm->hw);
1000
1001         /* clear any stale d0i3 state */
1002         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1003
1004         mvm->vif_count = 0;
1005         mvm->rx_ba_sessions = 0;
1006         mvm->fw_dbg_conf = FW_DBG_INVALID;
1007
1008         /* keep statistics ticking */
1009         iwl_mvm_accu_radio_stats(mvm);
1010 }
1011
1012 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1013 {
1014         int ret;
1015
1016         lockdep_assert_held(&mvm->mutex);
1017
1018         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1019                 /* Clean up some internal and mac80211 state on restart */
1020                 iwl_mvm_restart_cleanup(mvm);
1021         } else {
1022                 /* Hold the reference to prevent runtime suspend while
1023                  * the start procedure runs.  It's a bit confusing
1024                  * that the UCODE_DOWN reference is taken, but it just
1025                  * means "UCODE is not UP yet". ( TODO: rename this
1026                  * reference).
1027                  */
1028                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1029         }
1030         ret = iwl_mvm_up(mvm);
1031
1032         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1033                 /* Something went wrong - we need to finish some cleanup
1034                  * that normally iwl_mvm_mac_restart_complete() below
1035                  * would do.
1036                  */
1037                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1038                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1039         }
1040
1041         return ret;
1042 }
1043
1044 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1045 {
1046         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1047         int ret;
1048
1049         /* Some hw restart cleanups must not hold the mutex */
1050         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1051                 /*
1052                  * Make sure we are out of d0i3. This is needed
1053                  * to make sure the reference accounting is correct
1054                  * (and there is no stale d0i3_exit_work).
1055                  */
1056                 wait_event_timeout(mvm->d0i3_exit_waitq,
1057                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1058                                              &mvm->status),
1059                                    HZ);
1060         }
1061
1062         mutex_lock(&mvm->mutex);
1063         ret = __iwl_mvm_mac_start(mvm);
1064         mutex_unlock(&mvm->mutex);
1065
1066         return ret;
1067 }
1068
1069 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1070 {
1071         int ret;
1072
1073         mutex_lock(&mvm->mutex);
1074
1075         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1076         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1077         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1078         if (ret)
1079                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1080                         ret);
1081
1082         /* allow transport/FW low power modes */
1083         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1084
1085         /*
1086          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1087          * of packets the FW sent out, so we must reconnect.
1088          */
1089         iwl_mvm_teardown_tdls_peers(mvm);
1090
1091         mutex_unlock(&mvm->mutex);
1092 }
1093
1094 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1095 {
1096         if (iwl_mvm_is_d0i3_supported(mvm) &&
1097             iwl_mvm_enter_d0i3_on_suspend(mvm))
1098                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1099                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1100                                                         &mvm->status),
1101                                               HZ),
1102                           "D0i3 exit on resume timed out\n");
1103 }
1104
1105 static void
1106 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1107                               enum ieee80211_reconfig_type reconfig_type)
1108 {
1109         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1110
1111         switch (reconfig_type) {
1112         case IEEE80211_RECONFIG_TYPE_RESTART:
1113                 iwl_mvm_restart_complete(mvm);
1114                 break;
1115         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1116                 iwl_mvm_resume_complete(mvm);
1117                 break;
1118         }
1119 }
1120
1121 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1122 {
1123         lockdep_assert_held(&mvm->mutex);
1124
1125         /* firmware counters are obviously reset now, but we shouldn't
1126          * partially track so also clear the fw_reset_accu counters.
1127          */
1128         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1129
1130         /* async_handlers_wk is now blocked */
1131
1132         /*
1133          * The work item could be running or queued if the
1134          * ROC time event stops just as we get here.
1135          */
1136         flush_work(&mvm->roc_done_wk);
1137
1138         iwl_trans_stop_device(mvm->trans);
1139
1140         iwl_mvm_async_handlers_purge(mvm);
1141         /* async_handlers_list is empty and will stay empty: HW is stopped */
1142
1143         /* the fw is stopped, the aux sta is dead: clean up driver state */
1144         iwl_mvm_del_aux_sta(mvm);
1145
1146         /*
1147          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1148          * won't be called in this case).
1149          * But make sure to cleanup interfaces that have gone down before/during
1150          * HW restart was requested.
1151          */
1152         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1153                 ieee80211_iterate_interfaces(mvm->hw, 0,
1154                                              iwl_mvm_cleanup_iterator, mvm);
1155
1156         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1157          * make sure there's nothing left there and warn if any is found.
1158          */
1159         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1160                 int i;
1161
1162                 for (i = 0; i < mvm->max_scans; i++) {
1163                         if (WARN_ONCE(mvm->scan_uid_status[i],
1164                                       "UMAC scan UID %d status was not cleaned\n",
1165                                       i))
1166                                 mvm->scan_uid_status[i] = 0;
1167                 }
1168         }
1169
1170         mvm->ucode_loaded = false;
1171 }
1172
1173 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1174 {
1175         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1176
1177         flush_work(&mvm->d0i3_exit_work);
1178         flush_work(&mvm->async_handlers_wk);
1179         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1180         iwl_mvm_free_fw_dump_desc(mvm);
1181
1182         mutex_lock(&mvm->mutex);
1183         __iwl_mvm_mac_stop(mvm);
1184         mutex_unlock(&mvm->mutex);
1185
1186         /*
1187          * The worker might have been waiting for the mutex, let it run and
1188          * discover that its list is now empty.
1189          */
1190         cancel_work_sync(&mvm->async_handlers_wk);
1191 }
1192
1193 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1194 {
1195         u16 i;
1196
1197         lockdep_assert_held(&mvm->mutex);
1198
1199         for (i = 0; i < NUM_PHY_CTX; i++)
1200                 if (!mvm->phy_ctxts[i].ref)
1201                         return &mvm->phy_ctxts[i];
1202
1203         IWL_ERR(mvm, "No available PHY context\n");
1204         return NULL;
1205 }
1206
1207 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1208                                 s16 tx_power)
1209 {
1210         struct iwl_dev_tx_power_cmd cmd = {
1211                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1212                 .v2.mac_context_id =
1213                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1214                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1215         };
1216         int len = sizeof(cmd);
1217
1218         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1219                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1220
1221         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1222                 len = sizeof(cmd.v2);
1223
1224         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1225 }
1226
1227 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1228                                      struct ieee80211_vif *vif)
1229 {
1230         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1231         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1232         int ret;
1233
1234         mvmvif->mvm = mvm;
1235
1236         /*
1237          * make sure D0i3 exit is completed, otherwise a target access
1238          * during tx queue configuration could be done when still in
1239          * D0i3 state.
1240          */
1241         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1242         if (ret)
1243                 return ret;
1244
1245         /*
1246          * Not much to do here. The stack will not allow interface
1247          * types or combinations that we didn't advertise, so we
1248          * don't really have to check the types.
1249          */
1250
1251         mutex_lock(&mvm->mutex);
1252
1253         /* make sure that beacon statistics don't go backwards with FW reset */
1254         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1255                 mvmvif->beacon_stats.accu_num_beacons +=
1256                         mvmvif->beacon_stats.num_beacons;
1257
1258         /* Allocate resources for the MAC context, and add it to the fw  */
1259         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1260         if (ret)
1261                 goto out_unlock;
1262
1263         /* Counting number of interfaces is needed for legacy PM */
1264         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1265                 mvm->vif_count++;
1266
1267         /*
1268          * The AP binding flow can be done only after the beacon
1269          * template is configured (which happens only in the mac80211
1270          * start_ap() flow), and adding the broadcast station can happen
1271          * only after the binding.
1272          * In addition, since modifying the MAC before adding a bcast
1273          * station is not allowed by the FW, delay the adding of MAC context to
1274          * the point where we can also add the bcast station.
1275          * In short: there's not much we can do at this point, other than
1276          * allocating resources :)
1277          */
1278         if (vif->type == NL80211_IFTYPE_AP ||
1279             vif->type == NL80211_IFTYPE_ADHOC) {
1280                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1281                 if (ret) {
1282                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1283                         goto out_release;
1284                 }
1285
1286                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1287                 goto out_unlock;
1288         }
1289
1290         mvmvif->features |= hw->netdev_features;
1291
1292         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1293         if (ret)
1294                 goto out_release;
1295
1296         ret = iwl_mvm_power_update_mac(mvm);
1297         if (ret)
1298                 goto out_remove_mac;
1299
1300         /* beacon filtering */
1301         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1302         if (ret)
1303                 goto out_remove_mac;
1304
1305         if (!mvm->bf_allowed_vif &&
1306             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1307                 mvm->bf_allowed_vif = mvmvif;
1308                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1309                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1310         }
1311
1312         /*
1313          * P2P_DEVICE interface does not have a channel context assigned to it,
1314          * so a dedicated PHY context is allocated to it and the corresponding
1315          * MAC context is bound to it at this stage.
1316          */
1317         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1318
1319                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1320                 if (!mvmvif->phy_ctxt) {
1321                         ret = -ENOSPC;
1322                         goto out_free_bf;
1323                 }
1324
1325                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1326                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1327                 if (ret)
1328                         goto out_unref_phy;
1329
1330                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1331                 if (ret)
1332                         goto out_unbind;
1333
1334                 /* Save a pointer to p2p device vif, so it can later be used to
1335                  * update the p2p device MAC when a GO is started/stopped */
1336                 mvm->p2p_device_vif = vif;
1337         }
1338
1339         iwl_mvm_vif_dbgfs_register(mvm, vif);
1340         goto out_unlock;
1341
1342  out_unbind:
1343         iwl_mvm_binding_remove_vif(mvm, vif);
1344  out_unref_phy:
1345         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1346  out_free_bf:
1347         if (mvm->bf_allowed_vif == mvmvif) {
1348                 mvm->bf_allowed_vif = NULL;
1349                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1350                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1351         }
1352  out_remove_mac:
1353         mvmvif->phy_ctxt = NULL;
1354         iwl_mvm_mac_ctxt_remove(mvm, vif);
1355  out_release:
1356         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1357                 mvm->vif_count--;
1358
1359         iwl_mvm_mac_ctxt_release(mvm, vif);
1360  out_unlock:
1361         mutex_unlock(&mvm->mutex);
1362
1363         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1364
1365         return ret;
1366 }
1367
1368 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1369                                         struct ieee80211_vif *vif)
1370 {
1371         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1372
1373         if (tfd_msk) {
1374                 /*
1375                  * mac80211 first removes all the stations of the vif and
1376                  * then removes the vif. When it removes a station it also
1377                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1378                  * of all the stations of this vif are closed, and the queues
1379                  * of these AMPDU sessions are properly closed.
1380                  * We still need to take care of the shared queues of the vif.
1381                  * Flush them here.
1382                  */
1383                 mutex_lock(&mvm->mutex);
1384                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1385                 mutex_unlock(&mvm->mutex);
1386
1387                 /*
1388                  * There are transports that buffer a few frames in the host.
1389                  * For these, the flush above isn't enough since while we were
1390                  * flushing, the transport might have sent more frames to the
1391                  * device. To solve this, wait here until the transport is
1392                  * empty. Technically, this could have replaced the flush
1393                  * above, but flush is much faster than draining. So flush
1394                  * first, and drain to make sure we have no frames in the
1395                  * transport anymore.
1396                  * If a station still had frames on the shared queues, it is
1397                  * already marked as draining, so to complete the draining, we
1398                  * just need to wait until the transport is empty.
1399                  */
1400                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1401         }
1402
1403         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1404                 /*
1405                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1406                  * We assume here that all the packets sent to the OFFCHANNEL
1407                  * queue are sent in ROC session.
1408                  */
1409                 flush_work(&mvm->roc_done_wk);
1410         } else {
1411                 /*
1412                  * By now, all the AC queues are empty. The AGG queues are
1413                  * empty too. We already got all the Tx responses for all the
1414                  * packets in the queues. The drain work can have been
1415                  * triggered. Flush it.
1416                  */
1417                 flush_work(&mvm->sta_drained_wk);
1418         }
1419 }
1420
1421 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1422                                          struct ieee80211_vif *vif)
1423 {
1424         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1425         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1426
1427         iwl_mvm_prepare_mac_removal(mvm, vif);
1428
1429         mutex_lock(&mvm->mutex);
1430
1431         if (mvm->bf_allowed_vif == mvmvif) {
1432                 mvm->bf_allowed_vif = NULL;
1433                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1434                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1435         }
1436
1437         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1438
1439         /*
1440          * For AP/GO interface, the tear down of the resources allocated to the
1441          * interface is be handled as part of the stop_ap flow.
1442          */
1443         if (vif->type == NL80211_IFTYPE_AP ||
1444             vif->type == NL80211_IFTYPE_ADHOC) {
1445 #ifdef CONFIG_NL80211_TESTMODE
1446                 if (vif == mvm->noa_vif) {
1447                         mvm->noa_vif = NULL;
1448                         mvm->noa_duration = 0;
1449                 }
1450 #endif
1451                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1452                 goto out_release;
1453         }
1454
1455         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1456                 mvm->p2p_device_vif = NULL;
1457                 iwl_mvm_rm_bcast_sta(mvm, vif);
1458                 iwl_mvm_binding_remove_vif(mvm, vif);
1459                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1460                 mvmvif->phy_ctxt = NULL;
1461         }
1462
1463         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1464                 mvm->vif_count--;
1465
1466         iwl_mvm_power_update_mac(mvm);
1467         iwl_mvm_mac_ctxt_remove(mvm, vif);
1468
1469 out_release:
1470         iwl_mvm_mac_ctxt_release(mvm, vif);
1471         mutex_unlock(&mvm->mutex);
1472 }
1473
1474 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1475 {
1476         return 0;
1477 }
1478
1479 struct iwl_mvm_mc_iter_data {
1480         struct iwl_mvm *mvm;
1481         int port_id;
1482 };
1483
1484 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1485                                       struct ieee80211_vif *vif)
1486 {
1487         struct iwl_mvm_mc_iter_data *data = _data;
1488         struct iwl_mvm *mvm = data->mvm;
1489         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1490         int ret, len;
1491
1492         /* if we don't have free ports, mcast frames will be dropped */
1493         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1494                 return;
1495
1496         if (vif->type != NL80211_IFTYPE_STATION ||
1497             !vif->bss_conf.assoc)
1498                 return;
1499
1500         cmd->port_id = data->port_id++;
1501         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1502         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1503
1504         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1505         if (ret)
1506                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1507 }
1508
1509 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1510 {
1511         struct iwl_mvm_mc_iter_data iter_data = {
1512                 .mvm = mvm,
1513         };
1514
1515         lockdep_assert_held(&mvm->mutex);
1516
1517         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1518                 return;
1519
1520         ieee80211_iterate_active_interfaces_atomic(
1521                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1522                 iwl_mvm_mc_iface_iterator, &iter_data);
1523 }
1524
1525 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1526                                      struct netdev_hw_addr_list *mc_list)
1527 {
1528         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1529         struct iwl_mcast_filter_cmd *cmd;
1530         struct netdev_hw_addr *addr;
1531         int addr_count;
1532         bool pass_all;
1533         int len;
1534
1535         addr_count = netdev_hw_addr_list_count(mc_list);
1536         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1537                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1538         if (pass_all)
1539                 addr_count = 0;
1540
1541         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1542         cmd = kzalloc(len, GFP_ATOMIC);
1543         if (!cmd)
1544                 return 0;
1545
1546         if (pass_all) {
1547                 cmd->pass_all = 1;
1548                 return (u64)(unsigned long)cmd;
1549         }
1550
1551         netdev_hw_addr_list_for_each(addr, mc_list) {
1552                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1553                                    cmd->count, addr->addr);
1554                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1555                        addr->addr, ETH_ALEN);
1556                 cmd->count++;
1557         }
1558
1559         return (u64)(unsigned long)cmd;
1560 }
1561
1562 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1563                                      unsigned int changed_flags,
1564                                      unsigned int *total_flags,
1565                                      u64 multicast)
1566 {
1567         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1568         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1569
1570         mutex_lock(&mvm->mutex);
1571
1572         /* replace previous configuration */
1573         kfree(mvm->mcast_filter_cmd);
1574         mvm->mcast_filter_cmd = cmd;
1575
1576         if (!cmd)
1577                 goto out;
1578
1579         iwl_mvm_recalc_multicast(mvm);
1580 out:
1581         mutex_unlock(&mvm->mutex);
1582         *total_flags = 0;
1583 }
1584
1585 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1586                                         struct ieee80211_vif *vif,
1587                                         unsigned int filter_flags,
1588                                         unsigned int changed_flags)
1589 {
1590         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1591
1592         /* We support only filter for probe requests */
1593         if (!(changed_flags & FIF_PROBE_REQ))
1594                 return;
1595
1596         /* Supported only for p2p client interfaces */
1597         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1598             !vif->p2p)
1599                 return;
1600
1601         mutex_lock(&mvm->mutex);
1602         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1603         mutex_unlock(&mvm->mutex);
1604 }
1605
1606 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1607 struct iwl_bcast_iter_data {
1608         struct iwl_mvm *mvm;
1609         struct iwl_bcast_filter_cmd *cmd;
1610         u8 current_filter;
1611 };
1612
1613 static void
1614 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1615                          const struct iwl_fw_bcast_filter *in_filter,
1616                          struct iwl_fw_bcast_filter *out_filter)
1617 {
1618         struct iwl_fw_bcast_filter_attr *attr;
1619         int i;
1620
1621         memcpy(out_filter, in_filter, sizeof(*out_filter));
1622
1623         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1624                 attr = &out_filter->attrs[i];
1625
1626                 if (!attr->mask)
1627                         break;
1628
1629                 switch (attr->reserved1) {
1630                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1631                         if (vif->bss_conf.arp_addr_cnt != 1) {
1632                                 attr->mask = 0;
1633                                 continue;
1634                         }
1635
1636                         attr->val = vif->bss_conf.arp_addr_list[0];
1637                         break;
1638                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1639                         attr->val = *(__be32 *)&vif->addr[2];
1640                         break;
1641                 default:
1642                         break;
1643                 }
1644                 attr->reserved1 = 0;
1645                 out_filter->num_attrs++;
1646         }
1647 }
1648
1649 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1650                                           struct ieee80211_vif *vif)
1651 {
1652         struct iwl_bcast_iter_data *data = _data;
1653         struct iwl_mvm *mvm = data->mvm;
1654         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1655         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1656         struct iwl_fw_bcast_mac *bcast_mac;
1657         int i;
1658
1659         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1660                 return;
1661
1662         bcast_mac = &cmd->macs[mvmvif->id];
1663
1664         /*
1665          * enable filtering only for associated stations, but not for P2P
1666          * Clients
1667          */
1668         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1669             !vif->bss_conf.assoc)
1670                 return;
1671
1672         bcast_mac->default_discard = 1;
1673
1674         /* copy all configured filters */
1675         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1676                 /*
1677                  * Make sure we don't exceed our filters limit.
1678                  * if there is still a valid filter to be configured,
1679                  * be on the safe side and just allow bcast for this mac.
1680                  */
1681                 if (WARN_ON_ONCE(data->current_filter >=
1682                                  ARRAY_SIZE(cmd->filters))) {
1683                         bcast_mac->default_discard = 0;
1684                         bcast_mac->attached_filters = 0;
1685                         break;
1686                 }
1687
1688                 iwl_mvm_set_bcast_filter(vif,
1689                                          &mvm->bcast_filters[i],
1690                                          &cmd->filters[data->current_filter]);
1691
1692                 /* skip current filter if it contains no attributes */
1693                 if (!cmd->filters[data->current_filter].num_attrs)
1694                         continue;
1695
1696                 /* attach the filter to current mac */
1697                 bcast_mac->attached_filters |=
1698                                 cpu_to_le16(BIT(data->current_filter));
1699
1700                 data->current_filter++;
1701         }
1702 }
1703
1704 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1705                                     struct iwl_bcast_filter_cmd *cmd)
1706 {
1707         struct iwl_bcast_iter_data iter_data = {
1708                 .mvm = mvm,
1709                 .cmd = cmd,
1710         };
1711
1712         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1713                 return false;
1714
1715         memset(cmd, 0, sizeof(*cmd));
1716         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1717         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1718
1719 #ifdef CONFIG_IWLWIFI_DEBUGFS
1720         /* use debugfs filters/macs if override is configured */
1721         if (mvm->dbgfs_bcast_filtering.override) {
1722                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1723                        sizeof(cmd->filters));
1724                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1725                        sizeof(cmd->macs));
1726                 return true;
1727         }
1728 #endif
1729
1730         /* if no filters are configured, do nothing */
1731         if (!mvm->bcast_filters)
1732                 return false;
1733
1734         /* configure and attach these filters for each associated sta vif */
1735         ieee80211_iterate_active_interfaces(
1736                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1737                 iwl_mvm_bcast_filter_iterator, &iter_data);
1738
1739         return true;
1740 }
1741
1742 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1743 {
1744         struct iwl_bcast_filter_cmd cmd;
1745
1746         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1747                 return 0;
1748
1749         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1750                 return 0;
1751
1752         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1753                                     sizeof(cmd), &cmd);
1754 }
1755 #else
1756 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1757 {
1758         return 0;
1759 }
1760 #endif
1761
1762 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1763                                              struct ieee80211_vif *vif,
1764                                              struct ieee80211_bss_conf *bss_conf,
1765                                              u32 changes)
1766 {
1767         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1768         int ret;
1769
1770         /*
1771          * Re-calculate the tsf id, as the master-slave relations depend on the
1772          * beacon interval, which was not known when the station interface was
1773          * added.
1774          */
1775         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1776                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1777
1778         /*
1779          * If we're not associated yet, take the (new) BSSID before associating
1780          * so the firmware knows. If we're already associated, then use the old
1781          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1782          * branch for disassociation below.
1783          */
1784         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1785                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1786
1787         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1788         if (ret)
1789                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1790
1791         /* after sending it once, adopt mac80211 data */
1792         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1793         mvmvif->associated = bss_conf->assoc;
1794
1795         if (changes & BSS_CHANGED_ASSOC) {
1796                 if (bss_conf->assoc) {
1797                         /* clear statistics to get clean beacon counter */
1798                         iwl_mvm_request_statistics(mvm, true);
1799                         memset(&mvmvif->beacon_stats, 0,
1800                                sizeof(mvmvif->beacon_stats));
1801
1802                         /* add quota for this interface */
1803                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1804                         if (ret) {
1805                                 IWL_ERR(mvm, "failed to update quotas\n");
1806                                 return;
1807                         }
1808
1809                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1810                                      &mvm->status)) {
1811                                 /*
1812                                  * If we're restarting then the firmware will
1813                                  * obviously have lost synchronisation with
1814                                  * the AP. It will attempt to synchronise by
1815                                  * itself, but we can make it more reliable by
1816                                  * scheduling a session protection time event.
1817                                  *
1818                                  * The firmware needs to receive a beacon to
1819                                  * catch up with synchronisation, use 110% of
1820                                  * the beacon interval.
1821                                  *
1822                                  * Set a large maximum delay to allow for more
1823                                  * than a single interface.
1824                                  */
1825                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1826                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1827                                                         5 * dur, false);
1828                         }
1829
1830                         iwl_mvm_sf_update(mvm, vif, false);
1831                         iwl_mvm_power_vif_assoc(mvm, vif);
1832                         if (vif->p2p) {
1833                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1834                                 iwl_mvm_update_smps(mvm, vif,
1835                                                     IWL_MVM_SMPS_REQ_PROT,
1836                                                     IEEE80211_SMPS_DYNAMIC);
1837                         }
1838                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1839                         /*
1840                          * If update fails - SF might be running in associated
1841                          * mode while disassociated - which is forbidden.
1842                          */
1843                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1844                                   "Failed to update SF upon disassociation\n");
1845
1846                         /* remove AP station now that the MAC is unassoc */
1847                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1848                         if (ret)
1849                                 IWL_ERR(mvm, "failed to remove AP station\n");
1850
1851                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1852                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1853                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1854                         /* remove quota for this interface */
1855                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1856                         if (ret)
1857                                 IWL_ERR(mvm, "failed to update quotas\n");
1858
1859                         if (vif->p2p)
1860                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1861
1862                         /* this will take the cleared BSSID from bss_conf */
1863                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1864                         if (ret)
1865                                 IWL_ERR(mvm,
1866                                         "failed to update MAC %pM (clear after unassoc)\n",
1867                                         vif->addr);
1868                 }
1869
1870                 iwl_mvm_recalc_multicast(mvm);
1871                 iwl_mvm_configure_bcast_filter(mvm);
1872
1873                 /* reset rssi values */
1874                 mvmvif->bf_data.ave_beacon_signal = 0;
1875
1876                 iwl_mvm_bt_coex_vif_change(mvm);
1877                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1878                                     IEEE80211_SMPS_AUTOMATIC);
1879                 if (fw_has_capa(&mvm->fw->ucode_capa,
1880                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1881                         iwl_mvm_config_scan(mvm);
1882         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1883                 /*
1884                  * We received a beacon _after_ association so
1885                  * remove the session protection.
1886                  */
1887                 iwl_mvm_remove_time_event(mvm, mvmvif,
1888                                           &mvmvif->time_event_data);
1889         }
1890
1891         if (changes & BSS_CHANGED_BEACON_INFO) {
1892                 iwl_mvm_sf_update(mvm, vif, false);
1893                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1894         }
1895
1896         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1897                 ret = iwl_mvm_power_update_mac(mvm);
1898                 if (ret)
1899                         IWL_ERR(mvm, "failed to update power mode\n");
1900         }
1901
1902         if (changes & BSS_CHANGED_TXPOWER) {
1903                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1904                                 bss_conf->txpower);
1905                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1906         }
1907
1908         if (changes & BSS_CHANGED_CQM) {
1909                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1910                 /* reset cqm events tracking */
1911                 mvmvif->bf_data.last_cqm_event = 0;
1912                 if (mvmvif->bf_data.bf_enabled) {
1913                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1914                         if (ret)
1915                                 IWL_ERR(mvm,
1916                                         "failed to update CQM thresholds\n");
1917                 }
1918         }
1919
1920         if (changes & BSS_CHANGED_ARP_FILTER) {
1921                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1922                 iwl_mvm_configure_bcast_filter(mvm);
1923         }
1924 }
1925
1926 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1927                                  struct ieee80211_vif *vif)
1928 {
1929         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1930         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1931         int ret;
1932
1933         /*
1934          * iwl_mvm_mac_ctxt_add() might read directly from the device
1935          * (the system time), so make sure it is available.
1936          */
1937         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1938         if (ret)
1939                 return ret;
1940
1941         mutex_lock(&mvm->mutex);
1942
1943         /* Send the beacon template */
1944         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1945         if (ret)
1946                 goto out_unlock;
1947
1948         /*
1949          * Re-calculate the tsf id, as the master-slave relations depend on the
1950          * beacon interval, which was not known when the AP interface was added.
1951          */
1952         if (vif->type == NL80211_IFTYPE_AP)
1953                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1954
1955         mvmvif->ap_assoc_sta_count = 0;
1956
1957         /* Add the mac context */
1958         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1959         if (ret)
1960                 goto out_unlock;
1961
1962         /* Perform the binding */
1963         ret = iwl_mvm_binding_add_vif(mvm, vif);
1964         if (ret)
1965                 goto out_remove;
1966
1967         /* Send the bcast station. At this stage the TBTT and DTIM time events
1968          * are added and applied to the scheduler */
1969         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1970         if (ret)
1971                 goto out_unbind;
1972
1973         /* must be set before quota calculations */
1974         mvmvif->ap_ibss_active = true;
1975
1976         /* power updated needs to be done before quotas */
1977         iwl_mvm_power_update_mac(mvm);
1978
1979         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1980         if (ret)
1981                 goto out_quota_failed;
1982
1983         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1984         if (vif->p2p && mvm->p2p_device_vif)
1985                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1986
1987         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1988
1989         iwl_mvm_bt_coex_vif_change(mvm);
1990
1991         /* we don't support TDLS during DCM */
1992         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1993                 iwl_mvm_teardown_tdls_peers(mvm);
1994
1995         goto out_unlock;
1996
1997 out_quota_failed:
1998         iwl_mvm_power_update_mac(mvm);
1999         mvmvif->ap_ibss_active = false;
2000         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2001 out_unbind:
2002         iwl_mvm_binding_remove_vif(mvm, vif);
2003 out_remove:
2004         iwl_mvm_mac_ctxt_remove(mvm, vif);
2005 out_unlock:
2006         mutex_unlock(&mvm->mutex);
2007         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2008         return ret;
2009 }
2010
2011 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2012                                  struct ieee80211_vif *vif)
2013 {
2014         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2015         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2016
2017         iwl_mvm_prepare_mac_removal(mvm, vif);
2018
2019         mutex_lock(&mvm->mutex);
2020
2021         /* Handle AP stop while in CSA */
2022         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2023                 iwl_mvm_remove_time_event(mvm, mvmvif,
2024                                           &mvmvif->time_event_data);
2025                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2026                 mvmvif->csa_countdown = false;
2027         }
2028
2029         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2030                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2031                 mvm->csa_tx_block_bcn_timeout = 0;
2032         }
2033
2034         mvmvif->ap_ibss_active = false;
2035         mvm->ap_last_beacon_gp2 = 0;
2036
2037         iwl_mvm_bt_coex_vif_change(mvm);
2038
2039         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2040
2041         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2042         if (vif->p2p && mvm->p2p_device_vif)
2043                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2044
2045         iwl_mvm_update_quotas(mvm, false, NULL);
2046         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2047         iwl_mvm_binding_remove_vif(mvm, vif);
2048
2049         iwl_mvm_power_update_mac(mvm);
2050
2051         iwl_mvm_mac_ctxt_remove(mvm, vif);
2052
2053         mutex_unlock(&mvm->mutex);
2054 }
2055
2056 static void
2057 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2058                                  struct ieee80211_vif *vif,
2059                                  struct ieee80211_bss_conf *bss_conf,
2060                                  u32 changes)
2061 {
2062         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2063
2064         /* Changes will be applied when the AP/IBSS is started */
2065         if (!mvmvif->ap_ibss_active)
2066                 return;
2067
2068         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2069                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2070             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2071                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2072
2073         /* Need to send a new beacon template to the FW */
2074         if (changes & BSS_CHANGED_BEACON &&
2075             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2076                 IWL_WARN(mvm, "Failed updating beacon data\n");
2077
2078         if (changes & BSS_CHANGED_TXPOWER) {
2079                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2080                                 bss_conf->txpower);
2081                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2082         }
2083
2084 }
2085
2086 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2087                                      struct ieee80211_vif *vif,
2088                                      struct ieee80211_bss_conf *bss_conf,
2089                                      u32 changes)
2090 {
2091         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2092
2093         /*
2094          * iwl_mvm_bss_info_changed_station() might call
2095          * iwl_mvm_protect_session(), which reads directly from
2096          * the device (the system time), so make sure it is available.
2097          */
2098         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2099                 return;
2100
2101         mutex_lock(&mvm->mutex);
2102
2103         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2104                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2105
2106         switch (vif->type) {
2107         case NL80211_IFTYPE_STATION:
2108                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2109                 break;
2110         case NL80211_IFTYPE_AP:
2111         case NL80211_IFTYPE_ADHOC:
2112                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2113                 break;
2114         default:
2115                 /* shouldn't happen */
2116                 WARN_ON_ONCE(1);
2117         }
2118
2119         mutex_unlock(&mvm->mutex);
2120         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2121 }
2122
2123 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2124                                struct ieee80211_vif *vif,
2125                                struct ieee80211_scan_request *hw_req)
2126 {
2127         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2128         int ret;
2129
2130         if (hw_req->req.n_channels == 0 ||
2131             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2132                 return -EINVAL;
2133
2134         mutex_lock(&mvm->mutex);
2135         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2136         mutex_unlock(&mvm->mutex);
2137
2138         return ret;
2139 }
2140
2141 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2142                                        struct ieee80211_vif *vif)
2143 {
2144         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2145
2146         mutex_lock(&mvm->mutex);
2147
2148         /* Due to a race condition, it's possible that mac80211 asks
2149          * us to stop a hw_scan when it's already stopped.  This can
2150          * happen, for instance, if we stopped the scan ourselves,
2151          * called ieee80211_scan_completed() and the userspace called
2152          * cancel scan scan before ieee80211_scan_work() could run.
2153          * To handle that, simply return if the scan is not running.
2154         */
2155         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2156                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2157
2158         mutex_unlock(&mvm->mutex);
2159 }
2160
2161 static void
2162 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2163                                   struct ieee80211_sta *sta, u16 tids,
2164                                   int num_frames,
2165                                   enum ieee80211_frame_release_type reason,
2166                                   bool more_data)
2167 {
2168         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2169
2170         /* Called when we need to transmit (a) frame(s) from mac80211 */
2171
2172         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2173                                           tids, more_data, false);
2174 }
2175
2176 static void
2177 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2178                                     struct ieee80211_sta *sta, u16 tids,
2179                                     int num_frames,
2180                                     enum ieee80211_frame_release_type reason,
2181                                     bool more_data)
2182 {
2183         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2184
2185         /* Called when we need to transmit (a) frame(s) from agg queue */
2186
2187         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2188                                           tids, more_data, true);
2189 }
2190
2191 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2192                                    struct ieee80211_vif *vif,
2193                                    enum sta_notify_cmd cmd,
2194                                    struct ieee80211_sta *sta)
2195 {
2196         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2197         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2198         unsigned long txqs = 0, tids = 0;
2199         int tid;
2200
2201         spin_lock_bh(&mvmsta->lock);
2202         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2203                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2204
2205                 if (tid_data->state != IWL_AGG_ON &&
2206                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2207                         continue;
2208
2209                 __set_bit(tid_data->txq_id, &txqs);
2210
2211                 if (iwl_mvm_tid_queued(tid_data) == 0)
2212                         continue;
2213
2214                 __set_bit(tid, &tids);
2215         }
2216
2217         switch (cmd) {
2218         case STA_NOTIFY_SLEEP:
2219                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2220                         ieee80211_sta_block_awake(hw, sta, true);
2221
2222                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2223                         ieee80211_sta_set_buffered(sta, tid, true);
2224
2225                 if (txqs)
2226                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2227                 /*
2228                  * The fw updates the STA to be asleep. Tx packets on the Tx
2229                  * queues to this station will not be transmitted. The fw will
2230                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2231                  */
2232                 break;
2233         case STA_NOTIFY_AWAKE:
2234                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2235                         break;
2236
2237                 if (txqs)
2238                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2239                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2240                 break;
2241         default:
2242                 break;
2243         }
2244         spin_unlock_bh(&mvmsta->lock);
2245 }
2246
2247 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2248                                        struct ieee80211_vif *vif,
2249                                        struct ieee80211_sta *sta)
2250 {
2251         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2252         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2253
2254         /*
2255          * This is called before mac80211 does RCU synchronisation,
2256          * so here we already invalidate our internal RCU-protected
2257          * station pointer. The rest of the code will thus no longer
2258          * be able to find the station this way, and we don't rely
2259          * on further RCU synchronisation after the sta_state()
2260          * callback deleted the station.
2261          */
2262         mutex_lock(&mvm->mutex);
2263         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2264                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2265                                    ERR_PTR(-ENOENT));
2266
2267         mutex_unlock(&mvm->mutex);
2268 }
2269
2270 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2271                                 const u8 *bssid)
2272 {
2273         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2274                 return;
2275
2276         if (iwlwifi_mod_params.uapsd_disable) {
2277                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2278                 return;
2279         }
2280
2281         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2282 }
2283
2284 static void
2285 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2286                            struct ieee80211_vif *vif, u8 *peer_addr,
2287                            enum nl80211_tdls_operation action)
2288 {
2289         struct iwl_fw_dbg_trigger_tlv *trig;
2290         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2291
2292         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2293                 return;
2294
2295         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2296         tdls_trig = (void *)trig->data;
2297         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2298                 return;
2299
2300         if (!(tdls_trig->action_bitmap & BIT(action)))
2301                 return;
2302
2303         if (tdls_trig->peer_mode &&
2304             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2305                 return;
2306
2307         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2308                                     "TDLS event occurred, peer %pM, action %d",
2309                                     peer_addr, action);
2310 }
2311
2312 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2313                                  struct ieee80211_vif *vif,
2314                                  struct ieee80211_sta *sta,
2315                                  enum ieee80211_sta_state old_state,
2316                                  enum ieee80211_sta_state new_state)
2317 {
2318         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2319         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2320         int ret;
2321
2322         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2323                            sta->addr, old_state, new_state);
2324
2325         /* this would be a mac80211 bug ... but don't crash */
2326         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2327                 return -EINVAL;
2328
2329         /* if a STA is being removed, reuse its ID */
2330         flush_work(&mvm->sta_drained_wk);
2331
2332         mutex_lock(&mvm->mutex);
2333         if (old_state == IEEE80211_STA_NOTEXIST &&
2334             new_state == IEEE80211_STA_NONE) {
2335                 /*
2336                  * Firmware bug - it'll crash if the beacon interval is less
2337                  * than 16. We can't avoid connecting at all, so refuse the
2338                  * station state change, this will cause mac80211 to abandon
2339                  * attempts to connect to this AP, and eventually wpa_s will
2340                  * blacklist the AP...
2341                  */
2342                 if (vif->type == NL80211_IFTYPE_STATION &&
2343                     vif->bss_conf.beacon_int < 16) {
2344                         IWL_ERR(mvm,
2345                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2346                                 sta->addr, vif->bss_conf.beacon_int);
2347                         ret = -EINVAL;
2348                         goto out_unlock;
2349                 }
2350
2351                 if (sta->tdls &&
2352                     (vif->p2p ||
2353                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2354                                                 IWL_MVM_TDLS_STA_COUNT ||
2355                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2356                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2357                         ret = -EBUSY;
2358                         goto out_unlock;
2359                 }
2360
2361                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2362                 if (sta->tdls && ret == 0) {
2363                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2364                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2365                                                    NL80211_TDLS_SETUP);
2366                 }
2367         } else if (old_state == IEEE80211_STA_NONE &&
2368                    new_state == IEEE80211_STA_AUTH) {
2369                 /*
2370                  * EBS may be disabled due to previous failures reported by FW.
2371                  * Reset EBS status here assuming environment has been changed.
2372                  */
2373                 mvm->last_ebs_successful = true;
2374                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2375                 ret = 0;
2376         } else if (old_state == IEEE80211_STA_AUTH &&
2377                    new_state == IEEE80211_STA_ASSOC) {
2378                 if (vif->type == NL80211_IFTYPE_AP) {
2379                         mvmvif->ap_assoc_sta_count++;
2380                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2381                 }
2382                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2383                 if (ret == 0)
2384                         iwl_mvm_rs_rate_init(mvm, sta,
2385                                              mvmvif->phy_ctxt->channel->band,
2386                                              true);
2387         } else if (old_state == IEEE80211_STA_ASSOC &&
2388                    new_state == IEEE80211_STA_AUTHORIZED) {
2389
2390                 /* we don't support TDLS during DCM */
2391                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2392                         iwl_mvm_teardown_tdls_peers(mvm);
2393
2394                 if (sta->tdls)
2395                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2396                                                    NL80211_TDLS_ENABLE_LINK);
2397
2398                 /* enable beacon filtering */
2399                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2400                 ret = 0;
2401         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2402                    new_state == IEEE80211_STA_ASSOC) {
2403                 /* disable beacon filtering */
2404                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2405                 ret = 0;
2406         } else if (old_state == IEEE80211_STA_ASSOC &&
2407                    new_state == IEEE80211_STA_AUTH) {
2408                 if (vif->type == NL80211_IFTYPE_AP) {
2409                         mvmvif->ap_assoc_sta_count--;
2410                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2411                 }
2412                 ret = 0;
2413         } else if (old_state == IEEE80211_STA_AUTH &&
2414                    new_state == IEEE80211_STA_NONE) {
2415                 ret = 0;
2416         } else if (old_state == IEEE80211_STA_NONE &&
2417                    new_state == IEEE80211_STA_NOTEXIST) {
2418                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2419                 if (sta->tdls) {
2420                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2421                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2422                                                    NL80211_TDLS_DISABLE_LINK);
2423                 }
2424         } else {
2425                 ret = -EIO;
2426         }
2427  out_unlock:
2428         mutex_unlock(&mvm->mutex);
2429
2430         if (sta->tdls && ret == 0) {
2431                 if (old_state == IEEE80211_STA_NOTEXIST &&
2432                     new_state == IEEE80211_STA_NONE)
2433                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2434                 else if (old_state == IEEE80211_STA_NONE &&
2435                          new_state == IEEE80211_STA_NOTEXIST)
2436                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2437         }
2438
2439         return ret;
2440 }
2441
2442 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2443 {
2444         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2445
2446         mvm->rts_threshold = value;
2447
2448         return 0;
2449 }
2450
2451 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2452                                   struct ieee80211_vif *vif,
2453                                   struct ieee80211_sta *sta, u32 changed)
2454 {
2455         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2456
2457         if (vif->type == NL80211_IFTYPE_STATION &&
2458             changed & IEEE80211_RC_NSS_CHANGED)
2459                 iwl_mvm_sf_update(mvm, vif, false);
2460 }
2461
2462 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2463                                struct ieee80211_vif *vif, u16 ac,
2464                                const struct ieee80211_tx_queue_params *params)
2465 {
2466         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2467         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2468
2469         mvmvif->queue_params[ac] = *params;
2470
2471         /*
2472          * No need to update right away, we'll get BSS_CHANGED_QOS
2473          * The exception is P2P_DEVICE interface which needs immediate update.
2474          */
2475         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2476                 int ret;
2477
2478                 mutex_lock(&mvm->mutex);
2479                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2480                 mutex_unlock(&mvm->mutex);
2481                 return ret;
2482         }
2483         return 0;
2484 }
2485
2486 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2487                                       struct ieee80211_vif *vif)
2488 {
2489         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2490         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2491                            200 + vif->bss_conf.beacon_int);
2492         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2493                                100 + vif->bss_conf.beacon_int);
2494
2495         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2496                 return;
2497
2498         /*
2499          * iwl_mvm_protect_session() reads directly from the device
2500          * (the system time), so make sure it is available.
2501          */
2502         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2503                 return;
2504
2505         mutex_lock(&mvm->mutex);
2506         /* Try really hard to protect the session and hear a beacon */
2507         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2508         mutex_unlock(&mvm->mutex);
2509
2510         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2511 }
2512
2513 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2514                                         struct ieee80211_vif *vif,
2515                                         struct cfg80211_sched_scan_request *req,
2516                                         struct ieee80211_scan_ies *ies)
2517 {
2518         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2519
2520         int ret;
2521
2522         mutex_lock(&mvm->mutex);
2523
2524         if (!vif->bss_conf.idle) {
2525                 ret = -EBUSY;
2526                 goto out;
2527         }
2528
2529         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2530
2531 out:
2532         mutex_unlock(&mvm->mutex);
2533         return ret;
2534 }
2535
2536 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2537                                        struct ieee80211_vif *vif)
2538 {
2539         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2540         int ret;
2541
2542         mutex_lock(&mvm->mutex);
2543
2544         /* Due to a race condition, it's possible that mac80211 asks
2545          * us to stop a sched_scan when it's already stopped.  This
2546          * can happen, for instance, if we stopped the scan ourselves,
2547          * called ieee80211_sched_scan_stopped() and the userspace called
2548          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2549          * could run.  To handle this, simply return if the scan is
2550          * not running.
2551         */
2552         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2553                 mutex_unlock(&mvm->mutex);
2554                 return 0;
2555         }
2556
2557         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2558         mutex_unlock(&mvm->mutex);
2559         iwl_mvm_wait_for_async_handlers(mvm);
2560
2561         return ret;
2562 }
2563
2564 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2565                                enum set_key_cmd cmd,
2566                                struct ieee80211_vif *vif,
2567                                struct ieee80211_sta *sta,
2568                                struct ieee80211_key_conf *key)
2569 {
2570         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2571         struct iwl_mvm_sta *mvmsta;
2572         struct iwl_mvm_key_pn *ptk_pn;
2573         int keyidx = key->keyidx;
2574         int ret;
2575         u8 key_offset;
2576
2577         if (iwlwifi_mod_params.sw_crypto) {
2578                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2579                 return -EOPNOTSUPP;
2580         }
2581
2582         switch (key->cipher) {
2583         case WLAN_CIPHER_SUITE_TKIP:
2584                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2585                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2586                 break;
2587         case WLAN_CIPHER_SUITE_CCMP:
2588                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2589                 break;
2590         case WLAN_CIPHER_SUITE_AES_CMAC:
2591                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2592                 break;
2593         case WLAN_CIPHER_SUITE_WEP40:
2594         case WLAN_CIPHER_SUITE_WEP104:
2595                 /* For non-client mode, only use WEP keys for TX as we probably
2596                  * don't have a station yet anyway and would then have to keep
2597                  * track of the keys, linking them to each of the clients/peers
2598                  * as they appear. For now, don't do that, for performance WEP
2599                  * offload doesn't really matter much, but we need it for some
2600                  * other offload features in client mode.
2601                  */
2602                 if (vif->type != NL80211_IFTYPE_STATION)
2603                         return 0;
2604                 break;
2605         default:
2606                 /* currently FW supports only one optional cipher scheme */
2607                 if (hw->n_cipher_schemes &&
2608                     hw->cipher_schemes->cipher == key->cipher)
2609                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2610                 else
2611                         return -EOPNOTSUPP;
2612         }
2613
2614         mutex_lock(&mvm->mutex);
2615
2616         switch (cmd) {
2617         case SET_KEY:
2618                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2619                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2620                         /*
2621                          * GTK on AP interface is a TX-only key, return 0;
2622                          * on IBSS they're per-station and because we're lazy
2623                          * we don't support them for RX, so do the same.
2624                          */
2625                         ret = 0;
2626                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2627                         break;
2628                 }
2629
2630                 /* During FW restart, in order to restore the state as it was,
2631                  * don't try to reprogram keys we previously failed for.
2632                  */
2633                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2634                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2635                         IWL_DEBUG_MAC80211(mvm,
2636                                            "skip invalid idx key programming during restart\n");
2637                         ret = 0;
2638                         break;
2639                 }
2640
2641                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2642                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2643                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2644                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2645                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2646                         struct ieee80211_key_seq seq;
2647                         int tid, q;
2648
2649                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2650                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2651                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2652                                          mvm->trans->num_rx_queues *
2653                                                 sizeof(ptk_pn->q[0]),
2654                                          GFP_KERNEL);
2655                         if (!ptk_pn) {
2656                                 ret = -ENOMEM;
2657                                 break;
2658                         }
2659
2660                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2661                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2662                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2663                                         memcpy(ptk_pn->q[q].pn[tid],
2664                                                seq.ccmp.pn,
2665                                                IEEE80211_CCMP_PN_LEN);
2666                         }
2667
2668                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2669                 }
2670
2671                 /* in HW restart reuse the index, otherwise request a new one */
2672                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2673                         key_offset = key->hw_key_idx;
2674                 else
2675                         key_offset = STA_KEY_IDX_INVALID;
2676
2677                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2678                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2679                 if (ret) {
2680                         IWL_WARN(mvm, "set key failed\n");
2681                         /*
2682                          * can't add key for RX, but we don't need it
2683                          * in the device for TX so still return 0
2684                          */
2685                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2686                         ret = 0;
2687                 }
2688
2689                 break;
2690         case DISABLE_KEY:
2691                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2692                         ret = 0;
2693                         break;
2694                 }
2695
2696                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2697                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2698                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2699                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2700                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2701                         ptk_pn = rcu_dereference_protected(
2702                                                 mvmsta->ptk_pn[keyidx],
2703                                                 lockdep_is_held(&mvm->mutex));
2704                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2705                         if (ptk_pn)
2706                                 kfree_rcu(ptk_pn, rcu_head);
2707                 }
2708
2709                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2710                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2711                 break;
2712         default:
2713                 ret = -EINVAL;
2714         }
2715
2716         mutex_unlock(&mvm->mutex);
2717         return ret;
2718 }
2719
2720 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2721                                         struct ieee80211_vif *vif,
2722                                         struct ieee80211_key_conf *keyconf,
2723                                         struct ieee80211_sta *sta,
2724                                         u32 iv32, u16 *phase1key)
2725 {
2726         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2727
2728         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2729                 return;
2730
2731         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2732 }
2733
2734
2735 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2736                                struct iwl_rx_packet *pkt, void *data)
2737 {
2738         struct iwl_mvm *mvm =
2739                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2740         struct iwl_hs20_roc_res *resp;
2741         int resp_len = iwl_rx_packet_payload_len(pkt);
2742         struct iwl_mvm_time_event_data *te_data = data;
2743
2744         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2745                 return true;
2746
2747         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2748                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2749                 return true;
2750         }
2751
2752         resp = (void *)pkt->data;
2753
2754         IWL_DEBUG_TE(mvm,
2755                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2756                      resp->status, resp->event_unique_id);
2757
2758         te_data->uid = le32_to_cpu(resp->event_unique_id);
2759         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2760                      te_data->uid);
2761
2762         spin_lock_bh(&mvm->time_event_lock);
2763         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2764         spin_unlock_bh(&mvm->time_event_lock);
2765
2766         return true;
2767 }
2768
2769 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2770 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2771 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2772 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2773 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2774 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2775                                     struct ieee80211_channel *channel,
2776                                     struct ieee80211_vif *vif,
2777                                     int duration)
2778 {
2779         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2780         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2781         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2782         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2783         struct iwl_notification_wait wait_time_event;
2784         u32 dtim_interval = vif->bss_conf.dtim_period *
2785                 vif->bss_conf.beacon_int;
2786         u32 req_dur, delay;
2787         struct iwl_hs20_roc_req aux_roc_req = {
2788                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2789                 .id_and_color =
2790                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2791                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2792                 /* Set the channel info data */
2793                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2794                         PHY_BAND_24 : PHY_BAND_5,
2795                 .channel_info.channel = channel->hw_value,
2796                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2797                 /* Set the time and duration */
2798                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2799          };
2800
2801         delay = AUX_ROC_MIN_DELAY;
2802         req_dur = MSEC_TO_TU(duration);
2803
2804         /*
2805          * If we are associated we want the delay time to be at least one
2806          * dtim interval so that the FW can wait until after the DTIM and
2807          * then start the time event, this will potentially allow us to
2808          * remain off-channel for the max duration.
2809          * Since we want to use almost a whole dtim interval we would also
2810          * like the delay to be for 2-3 dtim intervals, in case there are
2811          * other time events with higher priority.
2812          */
2813         if (vif->bss_conf.assoc) {
2814                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2815                 /* We cannot remain off-channel longer than the DTIM interval */
2816                 if (dtim_interval <= req_dur) {
2817                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2818                         if (req_dur <= AUX_ROC_MIN_DURATION)
2819                                 req_dur = dtim_interval -
2820                                         AUX_ROC_MIN_SAFETY_BUFFER;
2821                 }
2822         }
2823
2824         aux_roc_req.duration = cpu_to_le32(req_dur);
2825         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2826
2827         IWL_DEBUG_TE(mvm,
2828                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2829                      channel->hw_value, req_dur, duration, delay,
2830                      dtim_interval);
2831         /* Set the node address */
2832         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2833
2834         lockdep_assert_held(&mvm->mutex);
2835
2836         spin_lock_bh(&mvm->time_event_lock);
2837
2838         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2839                 spin_unlock_bh(&mvm->time_event_lock);
2840                 return -EIO;
2841         }
2842
2843         te_data->vif = vif;
2844         te_data->duration = duration;
2845         te_data->id = HOT_SPOT_CMD;
2846
2847         spin_unlock_bh(&mvm->time_event_lock);
2848
2849         /*
2850          * Use a notification wait, which really just processes the
2851          * command response and doesn't wait for anything, in order
2852          * to be able to process the response and get the UID inside
2853          * the RX path. Using CMD_WANT_SKB doesn't work because it
2854          * stores the buffer and then wakes up this thread, by which
2855          * time another notification (that the time event started)
2856          * might already be processed unsuccessfully.
2857          */
2858         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2859                                    time_event_response,
2860                                    ARRAY_SIZE(time_event_response),
2861                                    iwl_mvm_rx_aux_roc, te_data);
2862
2863         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2864                                    &aux_roc_req);
2865
2866         if (res) {
2867                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2868                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2869                 goto out_clear_te;
2870         }
2871
2872         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2873         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2874         /* should never fail */
2875         WARN_ON_ONCE(res);
2876
2877         if (res) {
2878  out_clear_te:
2879                 spin_lock_bh(&mvm->time_event_lock);
2880                 iwl_mvm_te_clear_data(mvm, te_data);
2881                 spin_unlock_bh(&mvm->time_event_lock);
2882         }
2883
2884         return res;
2885 }
2886
2887 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2888                        struct ieee80211_vif *vif,
2889                        struct ieee80211_channel *channel,
2890                        int duration,
2891                        enum ieee80211_roc_type type)
2892 {
2893         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2894         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2895         struct cfg80211_chan_def chandef;
2896         struct iwl_mvm_phy_ctxt *phy_ctxt;
2897         int ret, i;
2898
2899         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2900                            duration, type);
2901
2902         flush_work(&mvm->roc_done_wk);
2903
2904         mutex_lock(&mvm->mutex);
2905
2906         switch (vif->type) {
2907         case NL80211_IFTYPE_STATION:
2908                 if (fw_has_capa(&mvm->fw->ucode_capa,
2909                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2910                         /* Use aux roc framework (HS20) */
2911                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2912                                                        vif, duration);
2913                         goto out_unlock;
2914                 }
2915                 IWL_ERR(mvm, "hotspot not supported\n");
2916                 ret = -EINVAL;
2917                 goto out_unlock;
2918         case NL80211_IFTYPE_P2P_DEVICE:
2919                 /* handle below */
2920                 break;
2921         default:
2922                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2923                 ret = -EINVAL;
2924                 goto out_unlock;
2925         }
2926
2927         for (i = 0; i < NUM_PHY_CTX; i++) {
2928                 phy_ctxt = &mvm->phy_ctxts[i];
2929                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2930                         continue;
2931
2932                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2933                         /*
2934                          * Unbind the P2P_DEVICE from the current PHY context,
2935                          * and if the PHY context is not used remove it.
2936                          */
2937                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2938                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2939                                 goto out_unlock;
2940
2941                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2942
2943                         /* Bind the P2P_DEVICE to the current PHY Context */
2944                         mvmvif->phy_ctxt = phy_ctxt;
2945
2946                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2947                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2948                                 goto out_unlock;
2949
2950                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2951                         goto schedule_time_event;
2952                 }
2953         }
2954
2955         /* Need to update the PHY context only if the ROC channel changed */
2956         if (channel == mvmvif->phy_ctxt->channel)
2957                 goto schedule_time_event;
2958
2959         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2960
2961         /*
2962          * Change the PHY context configuration as it is currently referenced
2963          * only by the P2P Device MAC
2964          */
2965         if (mvmvif->phy_ctxt->ref == 1) {
2966                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2967                                                &chandef, 1, 1);
2968                 if (ret)
2969                         goto out_unlock;
2970         } else {
2971                 /*
2972                  * The PHY context is shared with other MACs. Need to remove the
2973                  * P2P Device from the binding, allocate an new PHY context and
2974                  * create a new binding
2975                  */
2976                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2977                 if (!phy_ctxt) {
2978                         ret = -ENOSPC;
2979                         goto out_unlock;
2980                 }
2981
2982                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2983                                                1, 1);
2984                 if (ret) {
2985                         IWL_ERR(mvm, "Failed to change PHY context\n");
2986                         goto out_unlock;
2987                 }
2988
2989                 /* Unbind the P2P_DEVICE from the current PHY context */
2990                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2991                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2992                         goto out_unlock;
2993
2994                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2995
2996                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2997                 mvmvif->phy_ctxt = phy_ctxt;
2998
2999                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3000                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3001                         goto out_unlock;
3002
3003                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3004         }
3005
3006 schedule_time_event:
3007         /* Schedule the time events */
3008         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3009
3010 out_unlock:
3011         mutex_unlock(&mvm->mutex);
3012         IWL_DEBUG_MAC80211(mvm, "leave\n");
3013         return ret;
3014 }
3015
3016 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3017 {
3018         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3019
3020         IWL_DEBUG_MAC80211(mvm, "enter\n");
3021
3022         mutex_lock(&mvm->mutex);
3023         iwl_mvm_stop_roc(mvm);
3024         mutex_unlock(&mvm->mutex);
3025
3026         IWL_DEBUG_MAC80211(mvm, "leave\n");
3027         return 0;
3028 }
3029
3030 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3031                                  struct ieee80211_chanctx_conf *ctx)
3032 {
3033         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3034         struct iwl_mvm_phy_ctxt *phy_ctxt;
3035         int ret;
3036
3037         lockdep_assert_held(&mvm->mutex);
3038
3039         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3040
3041         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3042         if (!phy_ctxt) {
3043                 ret = -ENOSPC;
3044                 goto out;
3045         }
3046
3047         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3048                                        ctx->rx_chains_static,
3049                                        ctx->rx_chains_dynamic);
3050         if (ret) {
3051                 IWL_ERR(mvm, "Failed to add PHY context\n");
3052                 goto out;
3053         }
3054
3055         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3056         *phy_ctxt_id = phy_ctxt->id;
3057 out:
3058         return ret;
3059 }
3060
3061 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3062                                struct ieee80211_chanctx_conf *ctx)
3063 {
3064         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3065         int ret;
3066
3067         mutex_lock(&mvm->mutex);
3068         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3069         mutex_unlock(&mvm->mutex);
3070
3071         return ret;
3072 }
3073
3074 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3075                                      struct ieee80211_chanctx_conf *ctx)
3076 {
3077         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3078         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3079
3080         lockdep_assert_held(&mvm->mutex);
3081
3082         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3083 }
3084
3085 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3086                                    struct ieee80211_chanctx_conf *ctx)
3087 {
3088         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3089
3090         mutex_lock(&mvm->mutex);
3091         __iwl_mvm_remove_chanctx(mvm, ctx);
3092         mutex_unlock(&mvm->mutex);
3093 }
3094
3095 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3096                                    struct ieee80211_chanctx_conf *ctx,
3097                                    u32 changed)
3098 {
3099         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3100         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3101         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3102
3103         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3104                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3105                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3106                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3107                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3108                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3109                       phy_ctxt->ref, changed))
3110                 return;
3111
3112         mutex_lock(&mvm->mutex);
3113         iwl_mvm_bt_coex_vif_change(mvm);
3114         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3115                                  ctx->rx_chains_static,
3116                                  ctx->rx_chains_dynamic);
3117         mutex_unlock(&mvm->mutex);
3118 }
3119
3120 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3121                                         struct ieee80211_vif *vif,
3122                                         struct ieee80211_chanctx_conf *ctx,
3123                                         bool switching_chanctx)
3124 {
3125         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3126         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3127         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3128         int ret;
3129
3130         lockdep_assert_held(&mvm->mutex);
3131
3132         mvmvif->phy_ctxt = phy_ctxt;
3133
3134         switch (vif->type) {
3135         case NL80211_IFTYPE_AP:
3136                 /* only needed if we're switching chanctx (i.e. during CSA) */
3137                 if (switching_chanctx) {
3138                         mvmvif->ap_ibss_active = true;
3139                         break;
3140                 }
3141         case NL80211_IFTYPE_ADHOC:
3142                 /*
3143                  * The AP binding flow is handled as part of the start_ap flow
3144                  * (in bss_info_changed), similarly for IBSS.
3145                  */
3146                 ret = 0;
3147                 goto out;
3148         case NL80211_IFTYPE_STATION:
3149                 break;
3150         case NL80211_IFTYPE_MONITOR:
3151                 /* always disable PS when a monitor interface is active */
3152                 mvmvif->ps_disabled = true;
3153                 break;
3154         default:
3155                 ret = -EINVAL;
3156                 goto out;
3157         }
3158
3159         ret = iwl_mvm_binding_add_vif(mvm, vif);
3160         if (ret)
3161                 goto out;
3162
3163         /*
3164          * Power state must be updated before quotas,
3165          * otherwise fw will complain.
3166          */
3167         iwl_mvm_power_update_mac(mvm);
3168
3169         /* Setting the quota at this stage is only required for monitor
3170          * interfaces. For the other types, the bss_info changed flow
3171          * will handle quota settings.
3172          */
3173         if (vif->type == NL80211_IFTYPE_MONITOR) {
3174                 mvmvif->monitor_active = true;
3175                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3176                 if (ret)
3177                         goto out_remove_binding;
3178
3179                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3180                 if (ret)
3181                         goto out_remove_binding;
3182
3183         }
3184
3185         /* Handle binding during CSA */
3186         if (vif->type == NL80211_IFTYPE_AP) {
3187                 iwl_mvm_update_quotas(mvm, false, NULL);
3188                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3189         }
3190
3191         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3192                 u32 duration = 2 * vif->bss_conf.beacon_int;
3193
3194                 /* iwl_mvm_protect_session() reads directly from the
3195                  * device (the system time), so make sure it is
3196                  * available.
3197                  */
3198                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3199                 if (ret)
3200                         goto out_remove_binding;
3201
3202                 /* Protect the session to make sure we hear the first
3203                  * beacon on the new channel.
3204                  */
3205                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3206                                         vif->bss_conf.beacon_int / 2,
3207                                         true);
3208
3209                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3210
3211                 iwl_mvm_update_quotas(mvm, false, NULL);
3212         }
3213
3214         goto out;
3215
3216 out_remove_binding:
3217         iwl_mvm_binding_remove_vif(mvm, vif);
3218         iwl_mvm_power_update_mac(mvm);
3219 out:
3220         if (ret)
3221                 mvmvif->phy_ctxt = NULL;
3222         return ret;
3223 }
3224 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3225                                       struct ieee80211_vif *vif,
3226                                       struct ieee80211_chanctx_conf *ctx)
3227 {
3228         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3229         int ret;
3230
3231         mutex_lock(&mvm->mutex);
3232         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3233         mutex_unlock(&mvm->mutex);
3234
3235         return ret;
3236 }
3237
3238 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3239                                            struct ieee80211_vif *vif,
3240                                            struct ieee80211_chanctx_conf *ctx,
3241                                            bool switching_chanctx)
3242 {
3243         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3244         struct ieee80211_vif *disabled_vif = NULL;
3245
3246         lockdep_assert_held(&mvm->mutex);
3247
3248         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3249
3250         switch (vif->type) {
3251         case NL80211_IFTYPE_ADHOC:
3252                 goto out;
3253         case NL80211_IFTYPE_MONITOR:
3254                 mvmvif->monitor_active = false;
3255                 mvmvif->ps_disabled = false;
3256                 iwl_mvm_rm_snif_sta(mvm, vif);
3257                 break;
3258         case NL80211_IFTYPE_AP:
3259                 /* This part is triggered only during CSA */
3260                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3261                         goto out;
3262
3263                 mvmvif->csa_countdown = false;
3264
3265                 /* Set CS bit on all the stations */
3266                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3267
3268                 /* Save blocked iface, the timeout is set on the next beacon */
3269                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3270
3271                 mvmvif->ap_ibss_active = false;
3272                 break;
3273         case NL80211_IFTYPE_STATION:
3274                 if (!switching_chanctx)
3275                         break;
3276
3277                 disabled_vif = vif;
3278
3279                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3280                 break;
3281         default:
3282                 break;
3283         }
3284
3285         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3286         iwl_mvm_binding_remove_vif(mvm, vif);
3287
3288 out:
3289         mvmvif->phy_ctxt = NULL;
3290         iwl_mvm_power_update_mac(mvm);
3291 }
3292
3293 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3294                                          struct ieee80211_vif *vif,
3295                                          struct ieee80211_chanctx_conf *ctx)
3296 {
3297         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3298
3299         mutex_lock(&mvm->mutex);
3300         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3301         mutex_unlock(&mvm->mutex);
3302 }
3303
3304 static int
3305 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3306                                 struct ieee80211_vif_chanctx_switch *vifs)
3307 {
3308         int ret;
3309
3310         mutex_lock(&mvm->mutex);
3311         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3312         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3313
3314         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3315         if (ret) {
3316                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3317                 goto out_reassign;
3318         }
3319
3320         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3321                                            true);
3322         if (ret) {
3323                 IWL_ERR(mvm,
3324                         "failed to assign new_ctx during channel switch\n");
3325                 goto out_remove;
3326         }
3327
3328         /* we don't support TDLS during DCM - can be caused by channel switch */
3329         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3330                 iwl_mvm_teardown_tdls_peers(mvm);
3331
3332         goto out;
3333
3334 out_remove:
3335         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3336
3337 out_reassign:
3338         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3339                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3340                 goto out_restart;
3341         }
3342
3343         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3344                                          true)) {
3345                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3346                 goto out_restart;
3347         }
3348
3349         goto out;
3350
3351 out_restart:
3352         /* things keep failing, better restart the hw */
3353         iwl_mvm_nic_restart(mvm, false);
3354
3355 out:
3356         mutex_unlock(&mvm->mutex);
3357
3358         return ret;
3359 }
3360
3361 static int
3362 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3363                                     struct ieee80211_vif_chanctx_switch *vifs)
3364 {
3365         int ret;
3366
3367         mutex_lock(&mvm->mutex);
3368         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3369
3370         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3371                                            true);
3372         if (ret) {
3373                 IWL_ERR(mvm,
3374                         "failed to assign new_ctx during channel switch\n");
3375                 goto out_reassign;
3376         }
3377
3378         goto out;
3379
3380 out_reassign:
3381         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3382                                          true)) {
3383                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3384                 goto out_restart;
3385         }
3386
3387         goto out;
3388
3389 out_restart:
3390         /* things keep failing, better restart the hw */
3391         iwl_mvm_nic_restart(mvm, false);
3392
3393 out:
3394         mutex_unlock(&mvm->mutex);
3395
3396         return ret;
3397 }
3398
3399 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3400                                       struct ieee80211_vif_chanctx_switch *vifs,
3401                                       int n_vifs,
3402                                       enum ieee80211_chanctx_switch_mode mode)
3403 {
3404         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3405         int ret;
3406
3407         /* we only support a single-vif right now */
3408         if (n_vifs > 1)
3409                 return -EOPNOTSUPP;
3410
3411         switch (mode) {
3412         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3413                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3414                 break;
3415         case CHANCTX_SWMODE_REASSIGN_VIF:
3416                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3417                 break;
3418         default:
3419                 ret = -EOPNOTSUPP;
3420                 break;
3421         }
3422
3423         return ret;
3424 }
3425
3426 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3427                            struct ieee80211_sta *sta,
3428                            bool set)
3429 {
3430         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3431         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3432
3433         if (!mvm_sta || !mvm_sta->vif) {
3434                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3435                 return -EINVAL;
3436         }
3437
3438         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3439 }
3440
3441 #ifdef CONFIG_NL80211_TESTMODE
3442 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3443         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3444         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3445         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3446 };
3447
3448 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3449                                       struct ieee80211_vif *vif,
3450                                       void *data, int len)
3451 {
3452         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3453         int err;
3454         u32 noa_duration;
3455
3456         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3457         if (err)
3458                 return err;
3459
3460         if (!tb[IWL_MVM_TM_ATTR_CMD])
3461                 return -EINVAL;
3462
3463         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3464         case IWL_MVM_TM_CMD_SET_NOA:
3465                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3466                     !vif->bss_conf.enable_beacon ||
3467                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3468                         return -EINVAL;
3469
3470                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3471                 if (noa_duration >= vif->bss_conf.beacon_int)
3472                         return -EINVAL;
3473
3474                 mvm->noa_duration = noa_duration;
3475                 mvm->noa_vif = vif;
3476
3477                 return iwl_mvm_update_quotas(mvm, false, NULL);
3478         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3479                 /* must be associated client vif - ignore authorized */
3480                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3481                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3482                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3483                         return -EINVAL;
3484
3485                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3486                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3487                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3488         }
3489
3490         return -EOPNOTSUPP;
3491 }
3492
3493 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3494                                     struct ieee80211_vif *vif,
3495                                     void *data, int len)
3496 {
3497         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3498         int err;
3499
3500         mutex_lock(&mvm->mutex);
3501         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3502         mutex_unlock(&mvm->mutex);
3503
3504         return err;
3505 }
3506 #endif
3507
3508 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3509                                    struct ieee80211_vif *vif,
3510                                    struct ieee80211_channel_switch *chsw)
3511 {
3512         /* By implementing this operation, we prevent mac80211 from
3513          * starting its own channel switch timer, so that we can call
3514          * ieee80211_chswitch_done() ourselves at the right time
3515          * (which is when the absence time event starts).
3516          */
3517
3518         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3519                            "dummy channel switch op\n");
3520 }
3521
3522 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3523                                       struct ieee80211_vif *vif,
3524                                       struct ieee80211_channel_switch *chsw)
3525 {
3526         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3527         struct ieee80211_vif *csa_vif;
3528         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3529         u32 apply_time;
3530         int ret;
3531
3532         mutex_lock(&mvm->mutex);
3533
3534         mvmvif->csa_failed = false;
3535
3536         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3537                            chsw->chandef.center_freq1);
3538
3539         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3540
3541         switch (vif->type) {
3542         case NL80211_IFTYPE_AP:
3543                 csa_vif =
3544                         rcu_dereference_protected(mvm->csa_vif,
3545                                                   lockdep_is_held(&mvm->mutex));
3546                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3547                               "Another CSA is already in progress")) {
3548                         ret = -EBUSY;
3549                         goto out_unlock;
3550                 }
3551
3552                 rcu_assign_pointer(mvm->csa_vif, vif);
3553
3554                 if (WARN_ONCE(mvmvif->csa_countdown,
3555                               "Previous CSA countdown didn't complete")) {
3556                         ret = -EBUSY;
3557                         goto out_unlock;
3558                 }
3559
3560                 break;
3561         case NL80211_IFTYPE_STATION:
3562                 /* Schedule the time event to a bit before beacon 1,
3563                  * to make sure we're in the new channel when the
3564                  * GO/AP arrives.
3565                  */
3566                 apply_time = chsw->device_timestamp +
3567                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3568                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3569
3570                 if (chsw->block_tx)
3571                         iwl_mvm_csa_client_absent(mvm, vif);
3572
3573                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3574                                             apply_time);
3575                 if (mvmvif->bf_data.bf_enabled) {
3576                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3577                         if (ret)
3578                                 goto out_unlock;
3579                 }
3580
3581                 break;
3582         default:
3583                 break;
3584         }
3585
3586         mvmvif->ps_disabled = true;
3587
3588         ret = iwl_mvm_power_update_ps(mvm);
3589         if (ret)
3590                 goto out_unlock;
3591
3592         /* we won't be on this channel any longer */
3593         iwl_mvm_teardown_tdls_peers(mvm);
3594
3595 out_unlock:
3596         mutex_unlock(&mvm->mutex);
3597
3598         return ret;
3599 }
3600
3601 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3602                                        struct ieee80211_vif *vif)
3603 {
3604         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3605         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3606         int ret;
3607
3608         mutex_lock(&mvm->mutex);
3609
3610         if (mvmvif->csa_failed) {
3611                 mvmvif->csa_failed = false;
3612                 ret = -EIO;
3613                 goto out_unlock;
3614         }
3615
3616         if (vif->type == NL80211_IFTYPE_STATION) {
3617                 struct iwl_mvm_sta *mvmsta;
3618
3619                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3620                                                           mvmvif->ap_sta_id);
3621
3622                 if (WARN_ON(!mvmsta)) {
3623                         ret = -EIO;
3624                         goto out_unlock;
3625                 }
3626
3627                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3628
3629                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3630
3631                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3632                 if (ret)
3633                         goto out_unlock;
3634
3635                 iwl_mvm_stop_session_protection(mvm, vif);
3636         }
3637
3638         mvmvif->ps_disabled = false;
3639
3640         ret = iwl_mvm_power_update_ps(mvm);
3641
3642 out_unlock:
3643         mutex_unlock(&mvm->mutex);
3644
3645         return ret;
3646 }
3647
3648 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3649                               struct ieee80211_vif *vif, u32 queues, bool drop)
3650 {
3651         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3652         struct iwl_mvm_vif *mvmvif;
3653         struct iwl_mvm_sta *mvmsta;
3654         struct ieee80211_sta *sta;
3655         int i;
3656         u32 msk = 0;
3657
3658         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3659                 return;
3660
3661         mutex_lock(&mvm->mutex);
3662         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3663
3664         /* flush the AP-station and all TDLS peers */
3665         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3666                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3667                                                 lockdep_is_held(&mvm->mutex));
3668                 if (IS_ERR_OR_NULL(sta))
3669                         continue;
3670
3671                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3672                 if (mvmsta->vif != vif)
3673                         continue;
3674
3675                 /* make sure only TDLS peers or the AP are flushed */
3676                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3677
3678                 msk |= mvmsta->tfd_queue_msk;
3679         }
3680
3681         if (drop) {
3682                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3683                         IWL_ERR(mvm, "flush request fail\n");
3684                 mutex_unlock(&mvm->mutex);
3685         } else {
3686                 mutex_unlock(&mvm->mutex);
3687
3688                 /* this can take a while, and we may need/want other operations
3689                  * to succeed while doing this, so do it without the mutex held
3690                  */
3691                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3692         }
3693 }
3694
3695 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3696                                   struct survey_info *survey)
3697 {
3698         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3699         int ret;
3700
3701         memset(survey, 0, sizeof(*survey));
3702
3703         /* only support global statistics right now */
3704         if (idx != 0)
3705                 return -ENOENT;
3706
3707         if (fw_has_capa(&mvm->fw->ucode_capa,
3708                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3709                 return -ENOENT;
3710
3711         mutex_lock(&mvm->mutex);
3712
3713         if (mvm->ucode_loaded) {
3714                 ret = iwl_mvm_request_statistics(mvm, false);
3715                 if (ret)
3716                         goto out;
3717         }
3718
3719         survey->filled = SURVEY_INFO_TIME |
3720                          SURVEY_INFO_TIME_RX |
3721                          SURVEY_INFO_TIME_TX |
3722                          SURVEY_INFO_TIME_SCAN;
3723         survey->time = mvm->accu_radio_stats.on_time_rf +
3724                        mvm->radio_stats.on_time_rf;
3725         do_div(survey->time, USEC_PER_MSEC);
3726
3727         survey->time_rx = mvm->accu_radio_stats.rx_time +
3728                           mvm->radio_stats.rx_time;
3729         do_div(survey->time_rx, USEC_PER_MSEC);
3730
3731         survey->time_tx = mvm->accu_radio_stats.tx_time +
3732                           mvm->radio_stats.tx_time;
3733         do_div(survey->time_tx, USEC_PER_MSEC);
3734
3735         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3736                             mvm->radio_stats.on_time_scan;
3737         do_div(survey->time_scan, USEC_PER_MSEC);
3738
3739         ret = 0;
3740  out:
3741         mutex_unlock(&mvm->mutex);
3742         return ret;
3743 }
3744
3745 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3746                                        struct ieee80211_vif *vif,
3747                                        struct ieee80211_sta *sta,
3748                                        struct station_info *sinfo)
3749 {
3750         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3751         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3752         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3753
3754         if (fw_has_capa(&mvm->fw->ucode_capa,
3755                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3756                 return;
3757
3758         /* if beacon filtering isn't on mac80211 does it anyway */
3759         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3760                 return;
3761
3762         if (!vif->bss_conf.assoc)
3763                 return;
3764
3765         mutex_lock(&mvm->mutex);
3766
3767         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3768                 goto unlock;
3769
3770         if (iwl_mvm_request_statistics(mvm, false))
3771                 goto unlock;
3772
3773         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3774                            mvmvif->beacon_stats.accu_num_beacons;
3775         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3776         if (mvmvif->beacon_stats.avg_signal) {
3777                 /* firmware only reports a value after RXing a few beacons */
3778                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3779                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3780         }
3781  unlock:
3782         mutex_unlock(&mvm->mutex);
3783 }
3784
3785 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3786                                         struct ieee80211_vif *vif,
3787                                         const struct ieee80211_event *event)
3788 {
3789 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3790         do {                                                    \
3791                 if ((_cnt) && --(_cnt))                         \
3792                         break;                                  \
3793                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3794         } while (0)
3795
3796         struct iwl_fw_dbg_trigger_tlv *trig;
3797         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3798
3799         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3800                 return;
3801
3802         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3803         trig_mlme = (void *)trig->data;
3804         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3805                 return;
3806
3807         if (event->u.mlme.data == ASSOC_EVENT) {
3808                 if (event->u.mlme.status == MLME_DENIED)
3809                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3810                                            trig_mlme->stop_assoc_denied,
3811                                            "DENIED ASSOC: reason %d",
3812                                             event->u.mlme.reason);
3813                 else if (event->u.mlme.status == MLME_TIMEOUT)
3814                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3815                                            trig_mlme->stop_assoc_timeout,
3816                                            "ASSOC TIMEOUT");
3817         } else if (event->u.mlme.data == AUTH_EVENT) {
3818                 if (event->u.mlme.status == MLME_DENIED)
3819                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3820                                            trig_mlme->stop_auth_denied,
3821                                            "DENIED AUTH: reason %d",
3822                                            event->u.mlme.reason);
3823                 else if (event->u.mlme.status == MLME_TIMEOUT)
3824                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3825                                            trig_mlme->stop_auth_timeout,
3826                                            "AUTH TIMEOUT");
3827         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3828                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3829                                    trig_mlme->stop_rx_deauth,
3830                                    "DEAUTH RX %d", event->u.mlme.reason);
3831         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3832                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3833                                    trig_mlme->stop_tx_deauth,
3834                                    "DEAUTH TX %d", event->u.mlme.reason);
3835         }
3836 #undef CHECK_MLME_TRIGGER
3837 }
3838
3839 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3840                                           struct ieee80211_vif *vif,
3841                                           const struct ieee80211_event *event)
3842 {
3843         struct iwl_fw_dbg_trigger_tlv *trig;
3844         struct iwl_fw_dbg_trigger_ba *ba_trig;
3845
3846         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3847                 return;
3848
3849         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3850         ba_trig = (void *)trig->data;
3851         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3852                 return;
3853
3854         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3855                 return;
3856
3857         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3858                                     "BAR received from %pM, tid %d, ssn %d",
3859                                     event->u.ba.sta->addr, event->u.ba.tid,
3860                                     event->u.ba.ssn);
3861 }
3862
3863 static void
3864 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3865                                      struct ieee80211_vif *vif,
3866                                      const struct ieee80211_event *event)
3867 {
3868         struct iwl_fw_dbg_trigger_tlv *trig;
3869         struct iwl_fw_dbg_trigger_ba *ba_trig;
3870
3871         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3872                 return;
3873
3874         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3875         ba_trig = (void *)trig->data;
3876         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3877                 return;
3878
3879         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3880                 return;
3881
3882         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3883                                     "Frame from %pM timed out, tid %d",
3884                                     event->u.ba.sta->addr, event->u.ba.tid);
3885 }
3886
3887 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3888                                        struct ieee80211_vif *vif,
3889                                        const struct ieee80211_event *event)
3890 {
3891         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3892
3893         switch (event->type) {
3894         case MLME_EVENT:
3895                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3896                 break;
3897         case BAR_RX_EVENT:
3898                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3899                 break;
3900         case BA_FRAME_TIMEOUT:
3901                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3902                 break;
3903         default:
3904                 break;
3905         }
3906 }
3907
3908 const struct ieee80211_ops iwl_mvm_hw_ops = {
3909         .tx = iwl_mvm_mac_tx,
3910         .ampdu_action = iwl_mvm_mac_ampdu_action,
3911         .start = iwl_mvm_mac_start,
3912         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3913         .stop = iwl_mvm_mac_stop,
3914         .add_interface = iwl_mvm_mac_add_interface,
3915         .remove_interface = iwl_mvm_mac_remove_interface,
3916         .config = iwl_mvm_mac_config,
3917         .prepare_multicast = iwl_mvm_prepare_multicast,
3918         .configure_filter = iwl_mvm_configure_filter,
3919         .config_iface_filter = iwl_mvm_config_iface_filter,
3920         .bss_info_changed = iwl_mvm_bss_info_changed,
3921         .hw_scan = iwl_mvm_mac_hw_scan,
3922         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3923         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3924         .sta_state = iwl_mvm_mac_sta_state,
3925         .sta_notify = iwl_mvm_mac_sta_notify,
3926         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3927         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3928         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3929         .sta_rc_update = iwl_mvm_sta_rc_update,
3930         .conf_tx = iwl_mvm_mac_conf_tx,
3931         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3932         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3933         .flush = iwl_mvm_mac_flush,
3934         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3935         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3936         .set_key = iwl_mvm_mac_set_key,
3937         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3938         .remain_on_channel = iwl_mvm_roc,
3939         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3940         .add_chanctx = iwl_mvm_add_chanctx,
3941         .remove_chanctx = iwl_mvm_remove_chanctx,
3942         .change_chanctx = iwl_mvm_change_chanctx,
3943         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3944         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3945         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3946
3947         .start_ap = iwl_mvm_start_ap_ibss,
3948         .stop_ap = iwl_mvm_stop_ap_ibss,
3949         .join_ibss = iwl_mvm_start_ap_ibss,
3950         .leave_ibss = iwl_mvm_stop_ap_ibss,
3951
3952         .set_tim = iwl_mvm_set_tim,
3953
3954         .channel_switch = iwl_mvm_channel_switch,
3955         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3956         .post_channel_switch = iwl_mvm_post_channel_switch,
3957
3958         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3959         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3960         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3961
3962         .event_callback = iwl_mvm_mac_event_callback,
3963
3964         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3965
3966 #ifdef CONFIG_PM_SLEEP
3967         /* look at d3.c */
3968         .suspend = iwl_mvm_suspend,
3969         .resume = iwl_mvm_resume,
3970         .set_wakeup = iwl_mvm_set_wakeup,
3971         .set_rekey_data = iwl_mvm_set_rekey_data,
3972 #if IS_ENABLED(CONFIG_IPV6)
3973         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3974 #endif
3975         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3976 #endif
3977         .get_survey = iwl_mvm_mac_get_survey,
3978         .sta_statistics = iwl_mvm_mac_sta_statistics,
3979 };