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                                     struct ieee80211_ampdu_params *params)
 841 {
 842         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 843         int ret;
 844         bool tx_agg_ref = false;
 845         struct ieee80211_sta *sta = params->sta;
 846         enum ieee80211_ampdu_mlme_action action = params->action;
 847         u16 tid = params->tid;
 848         u16 *ssn = &params->ssn;
 849         u8 buf_size = params->buf_size;
 850
 851         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 852                      sta->addr, tid, action);
 853
 854         if (!(mvm->nvm_data->sku_cap_11n_enable))
 855                 return -EACCES;
 856
 857         /* return from D0i3 before starting a new Tx aggregation */
 858         switch (action) {
 859         case IEEE80211_AMPDU_TX_START:
 860         case IEEE80211_AMPDU_TX_STOP_CONT:
 861         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 862         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 863         case IEEE80211_AMPDU_TX_OPERATIONAL:
 864                 /*
 865                  * for tx start, wait synchronously until D0i3 exit to
 866                  * get the correct sequence number for the tid.
 867                  * additionally, some other ampdu actions use direct
 868                  * target access, which is not handled automatically
 869                  * by the trans layer (unlike commands), so wait for
 870                  * d0i3 exit in these cases as well.
 871                  */
 872                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 873                 if (ret)
 874                         return ret;
 875
 876                 tx_agg_ref = true;
 877                 break;
 878         default:
 879                 break;
 880         }
 881
 882         mutex_lock(&mvm->mutex);
 883
 884         switch (action) {
 885         case IEEE80211_AMPDU_RX_START:
 886                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 887                         ret = -EINVAL;
 888                         break;
 889                 }
 890                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
 891                 break;
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
 894                 break;
 895         case IEEE80211_AMPDU_TX_START:
 896                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 897                         ret = -EINVAL;
 898                         break;
 899                 }
 900                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 901                 break;
 902         case IEEE80211_AMPDU_TX_STOP_CONT:
 903                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 904                 break;
 905         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 906         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 907                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 908                 break;
 909         case IEEE80211_AMPDU_TX_OPERATIONAL:
 910                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 911                 break;
 912         default:
 913                 WARN_ON_ONCE(1);
 914                 ret = -EINVAL;
 915                 break;
 916         }
 917
 918         if (!ret) {
 919                 u16 rx_ba_ssn = 0;
 920
 921                 if (action == IEEE80211_AMPDU_RX_START)
 922                         rx_ba_ssn = *ssn;
 923
 924                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 925                                             rx_ba_ssn, action);
 926         }
 927         mutex_unlock(&mvm->mutex);
 928
 929         /*
 930          * If the tid is marked as started, we won't use it for offloaded
 931          * traffic on the next D0i3 entry. It's safe to unref.
 932          */
 933         if (tx_agg_ref)
 934                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 935
 936         return ret;
 937 }
 938
 939 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 940                                      struct ieee80211_vif *vif)
 941 {
 942         struct iwl_mvm *mvm = data;
 943         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 944
 945         mvmvif->uploaded = false;
 946         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 947
 948         spin_lock_bh(&mvm->time_event_lock);
 949         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 950         spin_unlock_bh(&mvm->time_event_lock);
 951
 952         mvmvif->phy_ctxt = NULL;
 953         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 954 }
 955
 956 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 957 {
 958         /* clear the D3 reconfig, we only need it to avoid dumping a
 959          * firmware coredump on reconfiguration, we shouldn't do that
 960          * on D3->D0 transition
 961          */
 962         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 963                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 964                 iwl_mvm_fw_error_dump(mvm);
 965         }
 966
 967         /* cleanup all stale references (scan, roc), but keep the
 968          * ucode_down ref until reconfig is complete
 969          */
 970         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 971
 972         iwl_trans_stop_device(mvm->trans);
 973
 974         mvm->scan_status = 0;
 975         mvm->ps_disabled = false;
 976         mvm->calibrating = false;
 977
 978         /* just in case one was running */
 979         iwl_mvm_cleanup_roc_te(mvm);
 980         ieee80211_remain_on_channel_expired(mvm->hw);
 981
 982         /*
 983          * cleanup all interfaces, even inactive ones, as some might have
 984          * gone down during the HW restart
 985          */
 986         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 987
 988         mvm->p2p_device_vif = NULL;
 989         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 990
 991         iwl_mvm_reset_phy_ctxts(mvm);
 992         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 993         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 994         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 995         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 996         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 997         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 998         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 999         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1000         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1001
1002         ieee80211_wake_queues(mvm->hw);
1003
1004         /* clear any stale d0i3 state */
1005         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1006
1007         mvm->vif_count = 0;
1008         mvm->rx_ba_sessions = 0;
1009         mvm->fw_dbg_conf = FW_DBG_INVALID;
1010
1011         /* keep statistics ticking */
1012         iwl_mvm_accu_radio_stats(mvm);
1013 }
1014
1015 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1016 {
1017         int ret;
1018
1019         lockdep_assert_held(&mvm->mutex);
1020
1021         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1022                 /* Clean up some internal and mac80211 state on restart */
1023                 iwl_mvm_restart_cleanup(mvm);
1024         } else {
1025                 /* Hold the reference to prevent runtime suspend while
1026                  * the start procedure runs.  It's a bit confusing
1027                  * that the UCODE_DOWN reference is taken, but it just
1028                  * means "UCODE is not UP yet". ( TODO: rename this
1029                  * reference).
1030                  */
1031                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1032         }
1033         ret = iwl_mvm_up(mvm);
1034
1035         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1036                 /* Something went wrong - we need to finish some cleanup
1037                  * that normally iwl_mvm_mac_restart_complete() below
1038                  * would do.
1039                  */
1040                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1041                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1042         }
1043
1044         return ret;
1045 }
1046
1047 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1048 {
1049         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1050         int ret;
1051
1052         /* Some hw restart cleanups must not hold the mutex */
1053         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1054                 /*
1055                  * Make sure we are out of d0i3. This is needed
1056                  * to make sure the reference accounting is correct
1057                  * (and there is no stale d0i3_exit_work).
1058                  */
1059                 wait_event_timeout(mvm->d0i3_exit_waitq,
1060                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1061                                              &mvm->status),
1062                                    HZ);
1063         }
1064
1065         mutex_lock(&mvm->mutex);
1066         ret = __iwl_mvm_mac_start(mvm);
1067         mutex_unlock(&mvm->mutex);
1068
1069         return ret;
1070 }
1071
1072 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1073 {
1074         int ret;
1075
1076         mutex_lock(&mvm->mutex);
1077
1078         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1079         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1080         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1081         if (ret)
1082                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1083                         ret);
1084
1085         /* allow transport/FW low power modes */
1086         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1087
1088         /*
1089          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1090          * of packets the FW sent out, so we must reconnect.
1091          */
1092         iwl_mvm_teardown_tdls_peers(mvm);
1093
1094         mutex_unlock(&mvm->mutex);
1095 }
1096
1097 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1098 {
1099         if (iwl_mvm_is_d0i3_supported(mvm) &&
1100             iwl_mvm_enter_d0i3_on_suspend(mvm))
1101                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1102                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1103                                                         &mvm->status),
1104                                               HZ),
1105                           "D0i3 exit on resume timed out\n");
1106 }
1107
1108 static void
1109 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1110                               enum ieee80211_reconfig_type reconfig_type)
1111 {
1112         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1113
1114         switch (reconfig_type) {
1115         case IEEE80211_RECONFIG_TYPE_RESTART:
1116                 iwl_mvm_restart_complete(mvm);
1117                 break;
1118         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1119                 iwl_mvm_resume_complete(mvm);
1120                 break;
1121         }
1122 }
1123
1124 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1125 {
1126         lockdep_assert_held(&mvm->mutex);
1127
1128         /* firmware counters are obviously reset now, but we shouldn't
1129          * partially track so also clear the fw_reset_accu counters.
1130          */
1131         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1132
1133         /* async_handlers_wk is now blocked */
1134
1135         /*
1136          * The work item could be running or queued if the
1137          * ROC time event stops just as we get here.
1138          */
1139         flush_work(&mvm->roc_done_wk);
1140
1141         iwl_trans_stop_device(mvm->trans);
1142
1143         iwl_mvm_async_handlers_purge(mvm);
1144         /* async_handlers_list is empty and will stay empty: HW is stopped */
1145
1146         /* the fw is stopped, the aux sta is dead: clean up driver state */
1147         iwl_mvm_del_aux_sta(mvm);
1148
1149         /*
1150          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1151          * won't be called in this case).
1152          * But make sure to cleanup interfaces that have gone down before/during
1153          * HW restart was requested.
1154          */
1155         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1156                 ieee80211_iterate_interfaces(mvm->hw, 0,
1157                                              iwl_mvm_cleanup_iterator, mvm);
1158
1159         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1160          * make sure there's nothing left there and warn if any is found.
1161          */
1162         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1163                 int i;
1164
1165                 for (i = 0; i < mvm->max_scans; i++) {
1166                         if (WARN_ONCE(mvm->scan_uid_status[i],
1167                                       "UMAC scan UID %d status was not cleaned\n",
1168                                       i))
1169                                 mvm->scan_uid_status[i] = 0;
1170                 }
1171         }
1172
1173         mvm->ucode_loaded = false;
1174 }
1175
1176 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1177 {
1178         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1179
1180         flush_work(&mvm->d0i3_exit_work);
1181         flush_work(&mvm->async_handlers_wk);
1182         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1183         iwl_mvm_free_fw_dump_desc(mvm);
1184
1185         mutex_lock(&mvm->mutex);
1186         __iwl_mvm_mac_stop(mvm);
1187         mutex_unlock(&mvm->mutex);
1188
1189         /*
1190          * The worker might have been waiting for the mutex, let it run and
1191          * discover that its list is now empty.
1192          */
1193         cancel_work_sync(&mvm->async_handlers_wk);
1194 }
1195
1196 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1197 {
1198         u16 i;
1199
1200         lockdep_assert_held(&mvm->mutex);
1201
1202         for (i = 0; i < NUM_PHY_CTX; i++)
1203                 if (!mvm->phy_ctxts[i].ref)
1204                         return &mvm->phy_ctxts[i];
1205
1206         IWL_ERR(mvm, "No available PHY context\n");
1207         return NULL;
1208 }
1209
1210 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1211                                 s16 tx_power)
1212 {
1213         struct iwl_dev_tx_power_cmd cmd = {
1214                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1215                 .v2.mac_context_id =
1216                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1217                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1218         };
1219         int len = sizeof(cmd);
1220
1221         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1222                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1223
1224         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1225                 len = sizeof(cmd.v2);
1226
1227         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1228 }
1229
1230 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1231                                      struct ieee80211_vif *vif)
1232 {
1233         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1234         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1235         int ret;
1236
1237         mvmvif->mvm = mvm;
1238
1239         /*
1240          * make sure D0i3 exit is completed, otherwise a target access
1241          * during tx queue configuration could be done when still in
1242          * D0i3 state.
1243          */
1244         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1245         if (ret)
1246                 return ret;
1247
1248         /*
1249          * Not much to do here. The stack will not allow interface
1250          * types or combinations that we didn't advertise, so we
1251          * don't really have to check the types.
1252          */
1253
1254         mutex_lock(&mvm->mutex);
1255
1256         /* make sure that beacon statistics don't go backwards with FW reset */
1257         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1258                 mvmvif->beacon_stats.accu_num_beacons +=
1259                         mvmvif->beacon_stats.num_beacons;
1260
1261         /* Allocate resources for the MAC context, and add it to the fw  */
1262         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1263         if (ret)
1264                 goto out_unlock;
1265
1266         /* Counting number of interfaces is needed for legacy PM */
1267         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1268                 mvm->vif_count++;
1269
1270         /*
1271          * The AP binding flow can be done only after the beacon
1272          * template is configured (which happens only in the mac80211
1273          * start_ap() flow), and adding the broadcast station can happen
1274          * only after the binding.
1275          * In addition, since modifying the MAC before adding a bcast
1276          * station is not allowed by the FW, delay the adding of MAC context to
1277          * the point where we can also add the bcast station.
1278          * In short: there's not much we can do at this point, other than
1279          * allocating resources :)
1280          */
1281         if (vif->type == NL80211_IFTYPE_AP ||
1282             vif->type == NL80211_IFTYPE_ADHOC) {
1283                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1284                 if (ret) {
1285                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1286                         goto out_release;
1287                 }
1288
1289                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1290                 goto out_unlock;
1291         }
1292
1293         mvmvif->features |= hw->netdev_features;
1294
1295         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1296         if (ret)
1297                 goto out_release;
1298
1299         ret = iwl_mvm_power_update_mac(mvm);
1300         if (ret)
1301                 goto out_remove_mac;
1302
1303         /* beacon filtering */
1304         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1305         if (ret)
1306                 goto out_remove_mac;
1307
1308         if (!mvm->bf_allowed_vif &&
1309             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1310                 mvm->bf_allowed_vif = mvmvif;
1311                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1312                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1313         }
1314
1315         /*
1316          * P2P_DEVICE interface does not have a channel context assigned to it,
1317          * so a dedicated PHY context is allocated to it and the corresponding
1318          * MAC context is bound to it at this stage.
1319          */
1320         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1321
1322                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1323                 if (!mvmvif->phy_ctxt) {
1324                         ret = -ENOSPC;
1325                         goto out_free_bf;
1326                 }
1327
1328                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1329                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1330                 if (ret)
1331                         goto out_unref_phy;
1332
1333                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1334                 if (ret)
1335                         goto out_unbind;
1336
1337                 /* Save a pointer to p2p device vif, so it can later be used to
1338                  * update the p2p device MAC when a GO is started/stopped */
1339                 mvm->p2p_device_vif = vif;
1340         }
1341
1342         iwl_mvm_vif_dbgfs_register(mvm, vif);
1343         goto out_unlock;
1344
1345  out_unbind:
1346         iwl_mvm_binding_remove_vif(mvm, vif);
1347  out_unref_phy:
1348         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1349  out_free_bf:
1350         if (mvm->bf_allowed_vif == mvmvif) {
1351                 mvm->bf_allowed_vif = NULL;
1352                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1353                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1354         }
1355  out_remove_mac:
1356         mvmvif->phy_ctxt = NULL;
1357         iwl_mvm_mac_ctxt_remove(mvm, vif);
1358  out_release:
1359         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1360                 mvm->vif_count--;
1361
1362         iwl_mvm_mac_ctxt_release(mvm, vif);
1363  out_unlock:
1364         mutex_unlock(&mvm->mutex);
1365
1366         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1367
1368         return ret;
1369 }
1370
1371 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1372                                         struct ieee80211_vif *vif)
1373 {
1374         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1375
1376         if (tfd_msk) {
1377                 /*
1378                  * mac80211 first removes all the stations of the vif and
1379                  * then removes the vif. When it removes a station it also
1380                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1381                  * of all the stations of this vif are closed, and the queues
1382                  * of these AMPDU sessions are properly closed.
1383                  * We still need to take care of the shared queues of the vif.
1384                  * Flush them here.
1385                  */
1386                 mutex_lock(&mvm->mutex);
1387                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1388                 mutex_unlock(&mvm->mutex);
1389
1390                 /*
1391                  * There are transports that buffer a few frames in the host.
1392                  * For these, the flush above isn't enough since while we were
1393                  * flushing, the transport might have sent more frames to the
1394                  * device. To solve this, wait here until the transport is
1395                  * empty. Technically, this could have replaced the flush
1396                  * above, but flush is much faster than draining. So flush
1397                  * first, and drain to make sure we have no frames in the
1398                  * transport anymore.
1399                  * If a station still had frames on the shared queues, it is
1400                  * already marked as draining, so to complete the draining, we
1401                  * just need to wait until the transport is empty.
1402                  */
1403                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1404         }
1405
1406         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1407                 /*
1408                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1409                  * We assume here that all the packets sent to the OFFCHANNEL
1410                  * queue are sent in ROC session.
1411                  */
1412                 flush_work(&mvm->roc_done_wk);
1413         } else {
1414                 /*
1415                  * By now, all the AC queues are empty. The AGG queues are
1416                  * empty too. We already got all the Tx responses for all the
1417                  * packets in the queues. The drain work can have been
1418                  * triggered. Flush it.
1419                  */
1420                 flush_work(&mvm->sta_drained_wk);
1421         }
1422 }
1423
1424 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1425                                          struct ieee80211_vif *vif)
1426 {
1427         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1428         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1429
1430         iwl_mvm_prepare_mac_removal(mvm, vif);
1431
1432         mutex_lock(&mvm->mutex);
1433
1434         if (mvm->bf_allowed_vif == mvmvif) {
1435                 mvm->bf_allowed_vif = NULL;
1436                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1437                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1438         }
1439
1440         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1441
1442         /*
1443          * For AP/GO interface, the tear down of the resources allocated to the
1444          * interface is be handled as part of the stop_ap flow.
1445          */
1446         if (vif->type == NL80211_IFTYPE_AP ||
1447             vif->type == NL80211_IFTYPE_ADHOC) {
1448 #ifdef CONFIG_NL80211_TESTMODE
1449                 if (vif == mvm->noa_vif) {
1450                         mvm->noa_vif = NULL;
1451                         mvm->noa_duration = 0;
1452                 }
1453 #endif
1454                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1455                 goto out_release;
1456         }
1457
1458         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1459                 mvm->p2p_device_vif = NULL;
1460                 iwl_mvm_rm_bcast_sta(mvm, vif);
1461                 iwl_mvm_binding_remove_vif(mvm, vif);
1462                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1463                 mvmvif->phy_ctxt = NULL;
1464         }
1465
1466         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1467                 mvm->vif_count--;
1468
1469         iwl_mvm_power_update_mac(mvm);
1470         iwl_mvm_mac_ctxt_remove(mvm, vif);
1471
1472 out_release:
1473         iwl_mvm_mac_ctxt_release(mvm, vif);
1474         mutex_unlock(&mvm->mutex);
1475 }
1476
1477 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1478 {
1479         return 0;
1480 }
1481
1482 struct iwl_mvm_mc_iter_data {
1483         struct iwl_mvm *mvm;
1484         int port_id;
1485 };
1486
1487 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1488                                       struct ieee80211_vif *vif)
1489 {
1490         struct iwl_mvm_mc_iter_data *data = _data;
1491         struct iwl_mvm *mvm = data->mvm;
1492         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1493         int ret, len;
1494
1495         /* if we don't have free ports, mcast frames will be dropped */
1496         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1497                 return;
1498
1499         if (vif->type != NL80211_IFTYPE_STATION ||
1500             !vif->bss_conf.assoc)
1501                 return;
1502
1503         cmd->port_id = data->port_id++;
1504         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1505         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1506
1507         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1508         if (ret)
1509                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1510 }
1511
1512 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1513 {
1514         struct iwl_mvm_mc_iter_data iter_data = {
1515                 .mvm = mvm,
1516         };
1517
1518         lockdep_assert_held(&mvm->mutex);
1519
1520         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1521                 return;
1522
1523         ieee80211_iterate_active_interfaces_atomic(
1524                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1525                 iwl_mvm_mc_iface_iterator, &iter_data);
1526 }
1527
1528 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1529                                      struct netdev_hw_addr_list *mc_list)
1530 {
1531         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1532         struct iwl_mcast_filter_cmd *cmd;
1533         struct netdev_hw_addr *addr;
1534         int addr_count;
1535         bool pass_all;
1536         int len;
1537
1538         addr_count = netdev_hw_addr_list_count(mc_list);
1539         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1540                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1541         if (pass_all)
1542                 addr_count = 0;
1543
1544         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1545         cmd = kzalloc(len, GFP_ATOMIC);
1546         if (!cmd)
1547                 return 0;
1548
1549         if (pass_all) {
1550                 cmd->pass_all = 1;
1551                 return (u64)(unsigned long)cmd;
1552         }
1553
1554         netdev_hw_addr_list_for_each(addr, mc_list) {
1555                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1556                                    cmd->count, addr->addr);
1557                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1558                        addr->addr, ETH_ALEN);
1559                 cmd->count++;
1560         }
1561
1562         return (u64)(unsigned long)cmd;
1563 }
1564
1565 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1566                                      unsigned int changed_flags,
1567                                      unsigned int *total_flags,
1568                                      u64 multicast)
1569 {
1570         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1571         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1572
1573         mutex_lock(&mvm->mutex);
1574
1575         /* replace previous configuration */
1576         kfree(mvm->mcast_filter_cmd);
1577         mvm->mcast_filter_cmd = cmd;
1578
1579         if (!cmd)
1580                 goto out;
1581
1582         iwl_mvm_recalc_multicast(mvm);
1583 out:
1584         mutex_unlock(&mvm->mutex);
1585         *total_flags = 0;
1586 }
1587
1588 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1589                                         struct ieee80211_vif *vif,
1590                                         unsigned int filter_flags,
1591                                         unsigned int changed_flags)
1592 {
1593         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1594
1595         /* We support only filter for probe requests */
1596         if (!(changed_flags & FIF_PROBE_REQ))
1597                 return;
1598
1599         /* Supported only for p2p client interfaces */
1600         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1601             !vif->p2p)
1602                 return;
1603
1604         mutex_lock(&mvm->mutex);
1605         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1606         mutex_unlock(&mvm->mutex);
1607 }
1608
1609 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1610 struct iwl_bcast_iter_data {
1611         struct iwl_mvm *mvm;
1612         struct iwl_bcast_filter_cmd *cmd;
1613         u8 current_filter;
1614 };
1615
1616 static void
1617 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1618                          const struct iwl_fw_bcast_filter *in_filter,
1619                          struct iwl_fw_bcast_filter *out_filter)
1620 {
1621         struct iwl_fw_bcast_filter_attr *attr;
1622         int i;
1623
1624         memcpy(out_filter, in_filter, sizeof(*out_filter));
1625
1626         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1627                 attr = &out_filter->attrs[i];
1628
1629                 if (!attr->mask)
1630                         break;
1631
1632                 switch (attr->reserved1) {
1633                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1634                         if (vif->bss_conf.arp_addr_cnt != 1) {
1635                                 attr->mask = 0;
1636                                 continue;
1637                         }
1638
1639                         attr->val = vif->bss_conf.arp_addr_list[0];
1640                         break;
1641                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1642                         attr->val = *(__be32 *)&vif->addr[2];
1643                         break;
1644                 default:
1645                         break;
1646                 }
1647                 attr->reserved1 = 0;
1648                 out_filter->num_attrs++;
1649         }
1650 }
1651
1652 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1653                                           struct ieee80211_vif *vif)
1654 {
1655         struct iwl_bcast_iter_data *data = _data;
1656         struct iwl_mvm *mvm = data->mvm;
1657         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1658         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1659         struct iwl_fw_bcast_mac *bcast_mac;
1660         int i;
1661
1662         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1663                 return;
1664
1665         bcast_mac = &cmd->macs[mvmvif->id];
1666
1667         /*
1668          * enable filtering only for associated stations, but not for P2P
1669          * Clients
1670          */
1671         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1672             !vif->bss_conf.assoc)
1673                 return;
1674
1675         bcast_mac->default_discard = 1;
1676
1677         /* copy all configured filters */
1678         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1679                 /*
1680                  * Make sure we don't exceed our filters limit.
1681                  * if there is still a valid filter to be configured,
1682                  * be on the safe side and just allow bcast for this mac.
1683                  */
1684                 if (WARN_ON_ONCE(data->current_filter >=
1685                                  ARRAY_SIZE(cmd->filters))) {
1686                         bcast_mac->default_discard = 0;
1687                         bcast_mac->attached_filters = 0;
1688                         break;
1689                 }
1690
1691                 iwl_mvm_set_bcast_filter(vif,
1692                                          &mvm->bcast_filters[i],
1693                                          &cmd->filters[data->current_filter]);
1694
1695                 /* skip current filter if it contains no attributes */
1696                 if (!cmd->filters[data->current_filter].num_attrs)
1697                         continue;
1698
1699                 /* attach the filter to current mac */
1700                 bcast_mac->attached_filters |=
1701                                 cpu_to_le16(BIT(data->current_filter));
1702
1703                 data->current_filter++;
1704         }
1705 }
1706
1707 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1708                                     struct iwl_bcast_filter_cmd *cmd)
1709 {
1710         struct iwl_bcast_iter_data iter_data = {
1711                 .mvm = mvm,
1712                 .cmd = cmd,
1713         };
1714
1715         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1716                 return false;
1717
1718         memset(cmd, 0, sizeof(*cmd));
1719         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1720         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1721
1722 #ifdef CONFIG_IWLWIFI_DEBUGFS
1723         /* use debugfs filters/macs if override is configured */
1724         if (mvm->dbgfs_bcast_filtering.override) {
1725                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1726                        sizeof(cmd->filters));
1727                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1728                        sizeof(cmd->macs));
1729                 return true;
1730         }
1731 #endif
1732
1733         /* if no filters are configured, do nothing */
1734         if (!mvm->bcast_filters)
1735                 return false;
1736
1737         /* configure and attach these filters for each associated sta vif */
1738         ieee80211_iterate_active_interfaces(
1739                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1740                 iwl_mvm_bcast_filter_iterator, &iter_data);
1741
1742         return true;
1743 }
1744
1745 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1746 {
1747         struct iwl_bcast_filter_cmd cmd;
1748
1749         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1750                 return 0;
1751
1752         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1753                 return 0;
1754
1755         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1756                                     sizeof(cmd), &cmd);
1757 }
1758 #else
1759 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1760 {
1761         return 0;
1762 }
1763 #endif
1764
1765 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1766                                              struct ieee80211_vif *vif,
1767                                              struct ieee80211_bss_conf *bss_conf,
1768                                              u32 changes)
1769 {
1770         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1771         int ret;
1772
1773         /*
1774          * Re-calculate the tsf id, as the master-slave relations depend on the
1775          * beacon interval, which was not known when the station interface was
1776          * added.
1777          */
1778         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1779                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1780
1781         /*
1782          * If we're not associated yet, take the (new) BSSID before associating
1783          * so the firmware knows. If we're already associated, then use the old
1784          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1785          * branch for disassociation below.
1786          */
1787         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1788                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1789
1790         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1791         if (ret)
1792                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1793
1794         /* after sending it once, adopt mac80211 data */
1795         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1796         mvmvif->associated = bss_conf->assoc;
1797
1798         if (changes & BSS_CHANGED_ASSOC) {
1799                 if (bss_conf->assoc) {
1800                         /* clear statistics to get clean beacon counter */
1801                         iwl_mvm_request_statistics(mvm, true);
1802                         memset(&mvmvif->beacon_stats, 0,
1803                                sizeof(mvmvif->beacon_stats));
1804
1805                         /* add quota for this interface */
1806                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1807                         if (ret) {
1808                                 IWL_ERR(mvm, "failed to update quotas\n");
1809                                 return;
1810                         }
1811
1812                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1813                                      &mvm->status)) {
1814                                 /*
1815                                  * If we're restarting then the firmware will
1816                                  * obviously have lost synchronisation with
1817                                  * the AP. It will attempt to synchronise by
1818                                  * itself, but we can make it more reliable by
1819                                  * scheduling a session protection time event.
1820                                  *
1821                                  * The firmware needs to receive a beacon to
1822                                  * catch up with synchronisation, use 110% of
1823                                  * the beacon interval.
1824                                  *
1825                                  * Set a large maximum delay to allow for more
1826                                  * than a single interface.
1827                                  */
1828                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1829                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1830                                                         5 * dur, false);
1831                         }
1832
1833                         iwl_mvm_sf_update(mvm, vif, false);
1834                         iwl_mvm_power_vif_assoc(mvm, vif);
1835                         if (vif->p2p) {
1836                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1837                                 iwl_mvm_update_smps(mvm, vif,
1838                                                     IWL_MVM_SMPS_REQ_PROT,
1839                                                     IEEE80211_SMPS_DYNAMIC);
1840                         }
1841                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1842                         /*
1843                          * If update fails - SF might be running in associated
1844                          * mode while disassociated - which is forbidden.
1845                          */
1846                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1847                                   "Failed to update SF upon disassociation\n");
1848
1849                         /* remove AP station now that the MAC is unassoc */
1850                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1851                         if (ret)
1852                                 IWL_ERR(mvm, "failed to remove AP station\n");
1853
1854                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1855                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1856                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1857                         /* remove quota for this interface */
1858                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1859                         if (ret)
1860                                 IWL_ERR(mvm, "failed to update quotas\n");
1861
1862                         if (vif->p2p)
1863                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1864
1865                         /* this will take the cleared BSSID from bss_conf */
1866                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1867                         if (ret)
1868                                 IWL_ERR(mvm,
1869                                         "failed to update MAC %pM (clear after unassoc)\n",
1870                                         vif->addr);
1871                 }
1872
1873                 iwl_mvm_recalc_multicast(mvm);
1874                 iwl_mvm_configure_bcast_filter(mvm);
1875
1876                 /* reset rssi values */
1877                 mvmvif->bf_data.ave_beacon_signal = 0;
1878
1879                 iwl_mvm_bt_coex_vif_change(mvm);
1880                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1881                                     IEEE80211_SMPS_AUTOMATIC);
1882                 if (fw_has_capa(&mvm->fw->ucode_capa,
1883                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1884                         iwl_mvm_config_scan(mvm);
1885         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1886                 /*
1887                  * We received a beacon _after_ association so
1888                  * remove the session protection.
1889                  */
1890                 iwl_mvm_remove_time_event(mvm, mvmvif,
1891                                           &mvmvif->time_event_data);
1892         }
1893
1894         if (changes & BSS_CHANGED_BEACON_INFO) {
1895                 iwl_mvm_sf_update(mvm, vif, false);
1896                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1897         }
1898
1899         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1900                 ret = iwl_mvm_power_update_mac(mvm);
1901                 if (ret)
1902                         IWL_ERR(mvm, "failed to update power mode\n");
1903         }
1904
1905         if (changes & BSS_CHANGED_TXPOWER) {
1906                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1907                                 bss_conf->txpower);
1908                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1909         }
1910
1911         if (changes & BSS_CHANGED_CQM) {
1912                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1913                 /* reset cqm events tracking */
1914                 mvmvif->bf_data.last_cqm_event = 0;
1915                 if (mvmvif->bf_data.bf_enabled) {
1916                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1917                         if (ret)
1918                                 IWL_ERR(mvm,
1919                                         "failed to update CQM thresholds\n");
1920                 }
1921         }
1922
1923         if (changes & BSS_CHANGED_ARP_FILTER) {
1924                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1925                 iwl_mvm_configure_bcast_filter(mvm);
1926         }
1927 }
1928
1929 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1930                                  struct ieee80211_vif *vif)
1931 {
1932         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1933         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1934         int ret;
1935
1936         /*
1937          * iwl_mvm_mac_ctxt_add() might read directly from the device
1938          * (the system time), so make sure it is available.
1939          */
1940         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1941         if (ret)
1942                 return ret;
1943
1944         mutex_lock(&mvm->mutex);
1945
1946         /* Send the beacon template */
1947         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1948         if (ret)
1949                 goto out_unlock;
1950
1951         /*
1952          * Re-calculate the tsf id, as the master-slave relations depend on the
1953          * beacon interval, which was not known when the AP interface was added.
1954          */
1955         if (vif->type == NL80211_IFTYPE_AP)
1956                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1957
1958         mvmvif->ap_assoc_sta_count = 0;
1959
1960         /* Add the mac context */
1961         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1962         if (ret)
1963                 goto out_unlock;
1964
1965         /* Perform the binding */
1966         ret = iwl_mvm_binding_add_vif(mvm, vif);
1967         if (ret)
1968                 goto out_remove;
1969
1970         /* Send the bcast station. At this stage the TBTT and DTIM time events
1971          * are added and applied to the scheduler */
1972         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1973         if (ret)
1974                 goto out_unbind;
1975
1976         /* must be set before quota calculations */
1977         mvmvif->ap_ibss_active = true;
1978
1979         /* power updated needs to be done before quotas */
1980         iwl_mvm_power_update_mac(mvm);
1981
1982         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1983         if (ret)
1984                 goto out_quota_failed;
1985
1986         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1987         if (vif->p2p && mvm->p2p_device_vif)
1988                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1989
1990         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1991
1992         iwl_mvm_bt_coex_vif_change(mvm);
1993
1994         /* we don't support TDLS during DCM */
1995         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1996                 iwl_mvm_teardown_tdls_peers(mvm);
1997
1998         goto out_unlock;
1999
2000 out_quota_failed:
2001         iwl_mvm_power_update_mac(mvm);
2002         mvmvif->ap_ibss_active = false;
2003         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2004 out_unbind:
2005         iwl_mvm_binding_remove_vif(mvm, vif);
2006 out_remove:
2007         iwl_mvm_mac_ctxt_remove(mvm, vif);
2008 out_unlock:
2009         mutex_unlock(&mvm->mutex);
2010         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2011         return ret;
2012 }
2013
2014 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2015                                  struct ieee80211_vif *vif)
2016 {
2017         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2018         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2019
2020         iwl_mvm_prepare_mac_removal(mvm, vif);
2021
2022         mutex_lock(&mvm->mutex);
2023
2024         /* Handle AP stop while in CSA */
2025         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2026                 iwl_mvm_remove_time_event(mvm, mvmvif,
2027                                           &mvmvif->time_event_data);
2028                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2029                 mvmvif->csa_countdown = false;
2030         }
2031
2032         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2033                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2034                 mvm->csa_tx_block_bcn_timeout = 0;
2035         }
2036
2037         mvmvif->ap_ibss_active = false;
2038         mvm->ap_last_beacon_gp2 = 0;
2039
2040         iwl_mvm_bt_coex_vif_change(mvm);
2041
2042         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2043
2044         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2045         if (vif->p2p && mvm->p2p_device_vif)
2046                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2047
2048         iwl_mvm_update_quotas(mvm, false, NULL);
2049         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2050         iwl_mvm_binding_remove_vif(mvm, vif);
2051
2052         iwl_mvm_power_update_mac(mvm);
2053
2054         iwl_mvm_mac_ctxt_remove(mvm, vif);
2055
2056         mutex_unlock(&mvm->mutex);
2057 }
2058
2059 static void
2060 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2061                                  struct ieee80211_vif *vif,
2062                                  struct ieee80211_bss_conf *bss_conf,
2063                                  u32 changes)
2064 {
2065         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2066
2067         /* Changes will be applied when the AP/IBSS is started */
2068         if (!mvmvif->ap_ibss_active)
2069                 return;
2070
2071         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2072                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2073             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2074                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2075
2076         /* Need to send a new beacon template to the FW */
2077         if (changes & BSS_CHANGED_BEACON &&
2078             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2079                 IWL_WARN(mvm, "Failed updating beacon data\n");
2080
2081         if (changes & BSS_CHANGED_TXPOWER) {
2082                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2083                                 bss_conf->txpower);
2084                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2085         }
2086
2087 }
2088
2089 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2090                                      struct ieee80211_vif *vif,
2091                                      struct ieee80211_bss_conf *bss_conf,
2092                                      u32 changes)
2093 {
2094         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2095
2096         /*
2097          * iwl_mvm_bss_info_changed_station() might call
2098          * iwl_mvm_protect_session(), which reads directly from
2099          * the device (the system time), so make sure it is available.
2100          */
2101         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2102                 return;
2103
2104         mutex_lock(&mvm->mutex);
2105
2106         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2107                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2108
2109         switch (vif->type) {
2110         case NL80211_IFTYPE_STATION:
2111                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2112                 break;
2113         case NL80211_IFTYPE_AP:
2114         case NL80211_IFTYPE_ADHOC:
2115                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2116                 break;
2117         default:
2118                 /* shouldn't happen */
2119                 WARN_ON_ONCE(1);
2120         }
2121
2122         mutex_unlock(&mvm->mutex);
2123         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2124 }
2125
2126 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2127                                struct ieee80211_vif *vif,
2128                                struct ieee80211_scan_request *hw_req)
2129 {
2130         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2131         int ret;
2132
2133         if (hw_req->req.n_channels == 0 ||
2134             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2135                 return -EINVAL;
2136
2137         mutex_lock(&mvm->mutex);
2138         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2139         mutex_unlock(&mvm->mutex);
2140
2141         return ret;
2142 }
2143
2144 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2145                                        struct ieee80211_vif *vif)
2146 {
2147         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2148
2149         mutex_lock(&mvm->mutex);
2150
2151         /* Due to a race condition, it's possible that mac80211 asks
2152          * us to stop a hw_scan when it's already stopped.  This can
2153          * happen, for instance, if we stopped the scan ourselves,
2154          * called ieee80211_scan_completed() and the userspace called
2155          * cancel scan scan before ieee80211_scan_work() could run.
2156          * To handle that, simply return if the scan is not running.
2157         */
2158         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2159                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2160
2161         mutex_unlock(&mvm->mutex);
2162 }
2163
2164 static void
2165 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2166                                   struct ieee80211_sta *sta, u16 tids,
2167                                   int num_frames,
2168                                   enum ieee80211_frame_release_type reason,
2169                                   bool more_data)
2170 {
2171         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2172
2173         /* Called when we need to transmit (a) frame(s) from mac80211 */
2174
2175         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2176                                           tids, more_data, false);
2177 }
2178
2179 static void
2180 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2181                                     struct ieee80211_sta *sta, u16 tids,
2182                                     int num_frames,
2183                                     enum ieee80211_frame_release_type reason,
2184                                     bool more_data)
2185 {
2186         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2187
2188         /* Called when we need to transmit (a) frame(s) from agg queue */
2189
2190         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2191                                           tids, more_data, true);
2192 }
2193
2194 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2195                                    struct ieee80211_vif *vif,
2196                                    enum sta_notify_cmd cmd,
2197                                    struct ieee80211_sta *sta)
2198 {
2199         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2200         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2201         unsigned long txqs = 0, tids = 0;
2202         int tid;
2203
2204         spin_lock_bh(&mvmsta->lock);
2205         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2206                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2207
2208                 if (tid_data->state != IWL_AGG_ON &&
2209                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2210                         continue;
2211
2212                 __set_bit(tid_data->txq_id, &txqs);
2213
2214                 if (iwl_mvm_tid_queued(tid_data) == 0)
2215                         continue;
2216
2217                 __set_bit(tid, &tids);
2218         }
2219
2220         switch (cmd) {
2221         case STA_NOTIFY_SLEEP:
2222                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2223                         ieee80211_sta_block_awake(hw, sta, true);
2224
2225                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2226                         ieee80211_sta_set_buffered(sta, tid, true);
2227
2228                 if (txqs)
2229                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2230                 /*
2231                  * The fw updates the STA to be asleep. Tx packets on the Tx
2232                  * queues to this station will not be transmitted. The fw will
2233                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2234                  */
2235                 break;
2236         case STA_NOTIFY_AWAKE:
2237                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2238                         break;
2239
2240                 if (txqs)
2241                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2242                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2243                 break;
2244         default:
2245                 break;
2246         }
2247         spin_unlock_bh(&mvmsta->lock);
2248 }
2249
2250 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2251                                        struct ieee80211_vif *vif,
2252                                        struct ieee80211_sta *sta)
2253 {
2254         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2255         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2256
2257         /*
2258          * This is called before mac80211 does RCU synchronisation,
2259          * so here we already invalidate our internal RCU-protected
2260          * station pointer. The rest of the code will thus no longer
2261          * be able to find the station this way, and we don't rely
2262          * on further RCU synchronisation after the sta_state()
2263          * callback deleted the station.
2264          */
2265         mutex_lock(&mvm->mutex);
2266         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2267                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2268                                    ERR_PTR(-ENOENT));
2269
2270         mutex_unlock(&mvm->mutex);
2271 }
2272
2273 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2274                                 const u8 *bssid)
2275 {
2276         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2277                 return;
2278
2279         if (iwlwifi_mod_params.uapsd_disable) {
2280                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2281                 return;
2282         }
2283
2284         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2285 }
2286
2287 static void
2288 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2289                            struct ieee80211_vif *vif, u8 *peer_addr,
2290                            enum nl80211_tdls_operation action)
2291 {
2292         struct iwl_fw_dbg_trigger_tlv *trig;
2293         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2294
2295         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2296                 return;
2297
2298         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2299         tdls_trig = (void *)trig->data;
2300         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2301                 return;
2302
2303         if (!(tdls_trig->action_bitmap & BIT(action)))
2304                 return;
2305
2306         if (tdls_trig->peer_mode &&
2307             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2308                 return;
2309
2310         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2311                                     "TDLS event occurred, peer %pM, action %d",
2312                                     peer_addr, action);
2313 }
2314
2315 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2316                                  struct ieee80211_vif *vif,
2317                                  struct ieee80211_sta *sta,
2318                                  enum ieee80211_sta_state old_state,
2319                                  enum ieee80211_sta_state new_state)
2320 {
2321         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2322         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2323         int ret;
2324
2325         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2326                            sta->addr, old_state, new_state);
2327
2328         /* this would be a mac80211 bug ... but don't crash */
2329         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2330                 return -EINVAL;
2331
2332         /* if a STA is being removed, reuse its ID */
2333         flush_work(&mvm->sta_drained_wk);
2334
2335         mutex_lock(&mvm->mutex);
2336         if (old_state == IEEE80211_STA_NOTEXIST &&
2337             new_state == IEEE80211_STA_NONE) {
2338                 /*
2339                  * Firmware bug - it'll crash if the beacon interval is less
2340                  * than 16. We can't avoid connecting at all, so refuse the
2341                  * station state change, this will cause mac80211 to abandon
2342                  * attempts to connect to this AP, and eventually wpa_s will
2343                  * blacklist the AP...
2344                  */
2345                 if (vif->type == NL80211_IFTYPE_STATION &&
2346                     vif->bss_conf.beacon_int < 16) {
2347                         IWL_ERR(mvm,
2348                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2349                                 sta->addr, vif->bss_conf.beacon_int);
2350                         ret = -EINVAL;
2351                         goto out_unlock;
2352                 }
2353
2354                 if (sta->tdls &&
2355                     (vif->p2p ||
2356                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2357                                                 IWL_MVM_TDLS_STA_COUNT ||
2358                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2359                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2360                         ret = -EBUSY;
2361                         goto out_unlock;
2362                 }
2363
2364                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2365                 if (sta->tdls && ret == 0) {
2366                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2367                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2368                                                    NL80211_TDLS_SETUP);
2369                 }
2370         } else if (old_state == IEEE80211_STA_NONE &&
2371                    new_state == IEEE80211_STA_AUTH) {
2372                 /*
2373                  * EBS may be disabled due to previous failures reported by FW.
2374                  * Reset EBS status here assuming environment has been changed.
2375                  */
2376                 mvm->last_ebs_successful = true;
2377                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2378                 ret = 0;
2379         } else if (old_state == IEEE80211_STA_AUTH &&
2380                    new_state == IEEE80211_STA_ASSOC) {
2381                 if (vif->type == NL80211_IFTYPE_AP) {
2382                         mvmvif->ap_assoc_sta_count++;
2383                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2384                 }
2385                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2386                 if (ret == 0)
2387                         iwl_mvm_rs_rate_init(mvm, sta,
2388                                              mvmvif->phy_ctxt->channel->band,
2389                                              true);
2390         } else if (old_state == IEEE80211_STA_ASSOC &&
2391                    new_state == IEEE80211_STA_AUTHORIZED) {
2392
2393                 /* we don't support TDLS during DCM */
2394                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2395                         iwl_mvm_teardown_tdls_peers(mvm);
2396
2397                 if (sta->tdls)
2398                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2399                                                    NL80211_TDLS_ENABLE_LINK);
2400
2401                 /* enable beacon filtering */
2402                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2403                 ret = 0;
2404         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2405                    new_state == IEEE80211_STA_ASSOC) {
2406                 /* disable beacon filtering */
2407                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2408                 ret = 0;
2409         } else if (old_state == IEEE80211_STA_ASSOC &&
2410                    new_state == IEEE80211_STA_AUTH) {
2411                 if (vif->type == NL80211_IFTYPE_AP) {
2412                         mvmvif->ap_assoc_sta_count--;
2413                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2414                 }
2415                 ret = 0;
2416         } else if (old_state == IEEE80211_STA_AUTH &&
2417                    new_state == IEEE80211_STA_NONE) {
2418                 ret = 0;
2419         } else if (old_state == IEEE80211_STA_NONE &&
2420                    new_state == IEEE80211_STA_NOTEXIST) {
2421                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2422                 if (sta->tdls) {
2423                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2424                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2425                                                    NL80211_TDLS_DISABLE_LINK);
2426                 }
2427         } else {
2428                 ret = -EIO;
2429         }
2430  out_unlock:
2431         mutex_unlock(&mvm->mutex);
2432
2433         if (sta->tdls && ret == 0) {
2434                 if (old_state == IEEE80211_STA_NOTEXIST &&
2435                     new_state == IEEE80211_STA_NONE)
2436                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2437                 else if (old_state == IEEE80211_STA_NONE &&
2438                          new_state == IEEE80211_STA_NOTEXIST)
2439                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2440         }
2441
2442         return ret;
2443 }
2444
2445 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2446 {
2447         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2448
2449         mvm->rts_threshold = value;
2450
2451         return 0;
2452 }
2453
2454 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2455                                   struct ieee80211_vif *vif,
2456                                   struct ieee80211_sta *sta, u32 changed)
2457 {
2458         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2459
2460         if (vif->type == NL80211_IFTYPE_STATION &&
2461             changed & IEEE80211_RC_NSS_CHANGED)
2462                 iwl_mvm_sf_update(mvm, vif, false);
2463 }
2464
2465 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2466                                struct ieee80211_vif *vif, u16 ac,
2467                                const struct ieee80211_tx_queue_params *params)
2468 {
2469         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2470         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2471
2472         mvmvif->queue_params[ac] = *params;
2473
2474         /*
2475          * No need to update right away, we'll get BSS_CHANGED_QOS
2476          * The exception is P2P_DEVICE interface which needs immediate update.
2477          */
2478         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2479                 int ret;
2480
2481                 mutex_lock(&mvm->mutex);
2482                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2483                 mutex_unlock(&mvm->mutex);
2484                 return ret;
2485         }
2486         return 0;
2487 }
2488
2489 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2490                                       struct ieee80211_vif *vif)
2491 {
2492         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2493         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2494                            200 + vif->bss_conf.beacon_int);
2495         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2496                                100 + vif->bss_conf.beacon_int);
2497
2498         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2499                 return;
2500
2501         /*
2502          * iwl_mvm_protect_session() reads directly from the device
2503          * (the system time), so make sure it is available.
2504          */
2505         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2506                 return;
2507
2508         mutex_lock(&mvm->mutex);
2509         /* Try really hard to protect the session and hear a beacon */
2510         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2511         mutex_unlock(&mvm->mutex);
2512
2513         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2514 }
2515
2516 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2517                                         struct ieee80211_vif *vif,
2518                                         struct cfg80211_sched_scan_request *req,
2519                                         struct ieee80211_scan_ies *ies)
2520 {
2521         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2522
2523         int ret;
2524
2525         mutex_lock(&mvm->mutex);
2526
2527         if (!vif->bss_conf.idle) {
2528                 ret = -EBUSY;
2529                 goto out;
2530         }
2531
2532         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2533
2534 out:
2535         mutex_unlock(&mvm->mutex);
2536         return ret;
2537 }
2538
2539 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2540                                        struct ieee80211_vif *vif)
2541 {
2542         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2543         int ret;
2544
2545         mutex_lock(&mvm->mutex);
2546
2547         /* Due to a race condition, it's possible that mac80211 asks
2548          * us to stop a sched_scan when it's already stopped.  This
2549          * can happen, for instance, if we stopped the scan ourselves,
2550          * called ieee80211_sched_scan_stopped() and the userspace called
2551          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2552          * could run.  To handle this, simply return if the scan is
2553          * not running.
2554         */
2555         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2556                 mutex_unlock(&mvm->mutex);
2557                 return 0;
2558         }
2559
2560         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2561         mutex_unlock(&mvm->mutex);
2562         iwl_mvm_wait_for_async_handlers(mvm);
2563
2564         return ret;
2565 }
2566
2567 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2568                                enum set_key_cmd cmd,
2569                                struct ieee80211_vif *vif,
2570                                struct ieee80211_sta *sta,
2571                                struct ieee80211_key_conf *key)
2572 {
2573         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2574         struct iwl_mvm_sta *mvmsta;
2575         struct iwl_mvm_key_pn *ptk_pn;
2576         int keyidx = key->keyidx;
2577         int ret;
2578         u8 key_offset;
2579
2580         if (iwlwifi_mod_params.sw_crypto) {
2581                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2582                 return -EOPNOTSUPP;
2583         }
2584
2585         switch (key->cipher) {
2586         case WLAN_CIPHER_SUITE_TKIP:
2587                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2588                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2589                 break;
2590         case WLAN_CIPHER_SUITE_CCMP:
2591                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2592                 break;
2593         case WLAN_CIPHER_SUITE_AES_CMAC:
2594                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2595                 break;
2596         case WLAN_CIPHER_SUITE_WEP40:
2597         case WLAN_CIPHER_SUITE_WEP104:
2598                 /* For non-client mode, only use WEP keys for TX as we probably
2599                  * don't have a station yet anyway and would then have to keep
2600                  * track of the keys, linking them to each of the clients/peers
2601                  * as they appear. For now, don't do that, for performance WEP
2602                  * offload doesn't really matter much, but we need it for some
2603                  * other offload features in client mode.
2604                  */
2605                 if (vif->type != NL80211_IFTYPE_STATION)
2606                         return 0;
2607                 break;
2608         default:
2609                 /* currently FW supports only one optional cipher scheme */
2610                 if (hw->n_cipher_schemes &&
2611                     hw->cipher_schemes->cipher == key->cipher)
2612                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2613                 else
2614                         return -EOPNOTSUPP;
2615         }
2616
2617         mutex_lock(&mvm->mutex);
2618
2619         switch (cmd) {
2620         case SET_KEY:
2621                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2622                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2623                         /*
2624                          * GTK on AP interface is a TX-only key, return 0;
2625                          * on IBSS they're per-station and because we're lazy
2626                          * we don't support them for RX, so do the same.
2627                          */
2628                         ret = 0;
2629                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2630                         break;
2631                 }
2632
2633                 /* During FW restart, in order to restore the state as it was,
2634                  * don't try to reprogram keys we previously failed for.
2635                  */
2636                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2637                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2638                         IWL_DEBUG_MAC80211(mvm,
2639                                            "skip invalid idx key programming during restart\n");
2640                         ret = 0;
2641                         break;
2642                 }
2643
2644                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2645                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2646                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2647                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2648                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2649                         struct ieee80211_key_seq seq;
2650                         int tid, q;
2651
2652                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2653                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2654                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2655                                          mvm->trans->num_rx_queues *
2656                                                 sizeof(ptk_pn->q[0]),
2657                                          GFP_KERNEL);
2658                         if (!ptk_pn) {
2659                                 ret = -ENOMEM;
2660                                 break;
2661                         }
2662
2663                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2664                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2665                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2666                                         memcpy(ptk_pn->q[q].pn[tid],
2667                                                seq.ccmp.pn,
2668                                                IEEE80211_CCMP_PN_LEN);
2669                         }
2670
2671                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2672                 }
2673
2674                 /* in HW restart reuse the index, otherwise request a new one */
2675                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2676                         key_offset = key->hw_key_idx;
2677                 else
2678                         key_offset = STA_KEY_IDX_INVALID;
2679
2680                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2681                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2682                 if (ret) {
2683                         IWL_WARN(mvm, "set key failed\n");
2684                         /*
2685                          * can't add key for RX, but we don't need it
2686                          * in the device for TX so still return 0
2687                          */
2688                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2689                         ret = 0;
2690                 }
2691
2692                 break;
2693         case DISABLE_KEY:
2694                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2695                         ret = 0;
2696                         break;
2697                 }
2698
2699                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2700                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2701                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2702                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2703                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2704                         ptk_pn = rcu_dereference_protected(
2705                                                 mvmsta->ptk_pn[keyidx],
2706                                                 lockdep_is_held(&mvm->mutex));
2707                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2708                         if (ptk_pn)
2709                                 kfree_rcu(ptk_pn, rcu_head);
2710                 }
2711
2712                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2713                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2714                 break;
2715         default:
2716                 ret = -EINVAL;
2717         }
2718
2719         mutex_unlock(&mvm->mutex);
2720         return ret;
2721 }
2722
2723 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2724                                         struct ieee80211_vif *vif,
2725                                         struct ieee80211_key_conf *keyconf,
2726                                         struct ieee80211_sta *sta,
2727                                         u32 iv32, u16 *phase1key)
2728 {
2729         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2730
2731         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2732                 return;
2733
2734         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2735 }
2736
2737
2738 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2739                                struct iwl_rx_packet *pkt, void *data)
2740 {
2741         struct iwl_mvm *mvm =
2742                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2743         struct iwl_hs20_roc_res *resp;
2744         int resp_len = iwl_rx_packet_payload_len(pkt);
2745         struct iwl_mvm_time_event_data *te_data = data;
2746
2747         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2748                 return true;
2749
2750         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2751                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2752                 return true;
2753         }
2754
2755         resp = (void *)pkt->data;
2756
2757         IWL_DEBUG_TE(mvm,
2758                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2759                      resp->status, resp->event_unique_id);
2760
2761         te_data->uid = le32_to_cpu(resp->event_unique_id);
2762         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2763                      te_data->uid);
2764
2765         spin_lock_bh(&mvm->time_event_lock);
2766         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2767         spin_unlock_bh(&mvm->time_event_lock);
2768
2769         return true;
2770 }
2771
2772 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2773 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2774 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2775 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2776 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2777 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2778                                     struct ieee80211_channel *channel,
2779                                     struct ieee80211_vif *vif,
2780                                     int duration)
2781 {
2782         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2783         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2784         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2785         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2786         struct iwl_notification_wait wait_time_event;
2787         u32 dtim_interval = vif->bss_conf.dtim_period *
2788                 vif->bss_conf.beacon_int;
2789         u32 req_dur, delay;
2790         struct iwl_hs20_roc_req aux_roc_req = {
2791                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2792                 .id_and_color =
2793                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2794                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2795                 /* Set the channel info data */
2796                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2797                         PHY_BAND_24 : PHY_BAND_5,
2798                 .channel_info.channel = channel->hw_value,
2799                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2800                 /* Set the time and duration */
2801                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2802          };
2803
2804         delay = AUX_ROC_MIN_DELAY;
2805         req_dur = MSEC_TO_TU(duration);
2806
2807         /*
2808          * If we are associated we want the delay time to be at least one
2809          * dtim interval so that the FW can wait until after the DTIM and
2810          * then start the time event, this will potentially allow us to
2811          * remain off-channel for the max duration.
2812          * Since we want to use almost a whole dtim interval we would also
2813          * like the delay to be for 2-3 dtim intervals, in case there are
2814          * other time events with higher priority.
2815          */
2816         if (vif->bss_conf.assoc) {
2817                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2818                 /* We cannot remain off-channel longer than the DTIM interval */
2819                 if (dtim_interval <= req_dur) {
2820                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2821                         if (req_dur <= AUX_ROC_MIN_DURATION)
2822                                 req_dur = dtim_interval -
2823                                         AUX_ROC_MIN_SAFETY_BUFFER;
2824                 }
2825         }
2826
2827         aux_roc_req.duration = cpu_to_le32(req_dur);
2828         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2829
2830         IWL_DEBUG_TE(mvm,
2831                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2832                      channel->hw_value, req_dur, duration, delay,
2833                      dtim_interval);
2834         /* Set the node address */
2835         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2836
2837         lockdep_assert_held(&mvm->mutex);
2838
2839         spin_lock_bh(&mvm->time_event_lock);
2840
2841         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2842                 spin_unlock_bh(&mvm->time_event_lock);
2843                 return -EIO;
2844         }
2845
2846         te_data->vif = vif;
2847         te_data->duration = duration;
2848         te_data->id = HOT_SPOT_CMD;
2849
2850         spin_unlock_bh(&mvm->time_event_lock);
2851
2852         /*
2853          * Use a notification wait, which really just processes the
2854          * command response and doesn't wait for anything, in order
2855          * to be able to process the response and get the UID inside
2856          * the RX path. Using CMD_WANT_SKB doesn't work because it
2857          * stores the buffer and then wakes up this thread, by which
2858          * time another notification (that the time event started)
2859          * might already be processed unsuccessfully.
2860          */
2861         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2862                                    time_event_response,
2863                                    ARRAY_SIZE(time_event_response),
2864                                    iwl_mvm_rx_aux_roc, te_data);
2865
2866         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2867                                    &aux_roc_req);
2868
2869         if (res) {
2870                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2871                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2872                 goto out_clear_te;
2873         }
2874
2875         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2876         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2877         /* should never fail */
2878         WARN_ON_ONCE(res);
2879
2880         if (res) {
2881  out_clear_te:
2882                 spin_lock_bh(&mvm->time_event_lock);
2883                 iwl_mvm_te_clear_data(mvm, te_data);
2884                 spin_unlock_bh(&mvm->time_event_lock);
2885         }
2886
2887         return res;
2888 }
2889
2890 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2891                        struct ieee80211_vif *vif,
2892                        struct ieee80211_channel *channel,
2893                        int duration,
2894                        enum ieee80211_roc_type type)
2895 {
2896         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2897         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2898         struct cfg80211_chan_def chandef;
2899         struct iwl_mvm_phy_ctxt *phy_ctxt;
2900         int ret, i;
2901
2902         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2903                            duration, type);
2904
2905         flush_work(&mvm->roc_done_wk);
2906
2907         mutex_lock(&mvm->mutex);
2908
2909         switch (vif->type) {
2910         case NL80211_IFTYPE_STATION:
2911                 if (fw_has_capa(&mvm->fw->ucode_capa,
2912                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2913                         /* Use aux roc framework (HS20) */
2914                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2915                                                        vif, duration);
2916                         goto out_unlock;
2917                 }
2918                 IWL_ERR(mvm, "hotspot not supported\n");
2919                 ret = -EINVAL;
2920                 goto out_unlock;
2921         case NL80211_IFTYPE_P2P_DEVICE:
2922                 /* handle below */
2923                 break;
2924         default:
2925                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2926                 ret = -EINVAL;
2927                 goto out_unlock;
2928         }
2929
2930         for (i = 0; i < NUM_PHY_CTX; i++) {
2931                 phy_ctxt = &mvm->phy_ctxts[i];
2932                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2933                         continue;
2934
2935                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2936                         /*
2937                          * Unbind the P2P_DEVICE from the current PHY context,
2938                          * and if the PHY context is not used remove it.
2939                          */
2940                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2941                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2942                                 goto out_unlock;
2943
2944                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2945
2946                         /* Bind the P2P_DEVICE to the current PHY Context */
2947                         mvmvif->phy_ctxt = phy_ctxt;
2948
2949                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2950                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2951                                 goto out_unlock;
2952
2953                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2954                         goto schedule_time_event;
2955                 }
2956         }
2957
2958         /* Need to update the PHY context only if the ROC channel changed */
2959         if (channel == mvmvif->phy_ctxt->channel)
2960                 goto schedule_time_event;
2961
2962         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2963
2964         /*
2965          * Change the PHY context configuration as it is currently referenced
2966          * only by the P2P Device MAC
2967          */
2968         if (mvmvif->phy_ctxt->ref == 1) {
2969                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2970                                                &chandef, 1, 1);
2971                 if (ret)
2972                         goto out_unlock;
2973         } else {
2974                 /*
2975                  * The PHY context is shared with other MACs. Need to remove the
2976                  * P2P Device from the binding, allocate an new PHY context and
2977                  * create a new binding
2978                  */
2979                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2980                 if (!phy_ctxt) {
2981                         ret = -ENOSPC;
2982                         goto out_unlock;
2983                 }
2984
2985                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2986                                                1, 1);
2987                 if (ret) {
2988                         IWL_ERR(mvm, "Failed to change PHY context\n");
2989                         goto out_unlock;
2990                 }
2991
2992                 /* Unbind the P2P_DEVICE from the current PHY context */
2993                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2994                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2995                         goto out_unlock;
2996
2997                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2998
2999                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3000                 mvmvif->phy_ctxt = phy_ctxt;
3001
3002                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3003                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3004                         goto out_unlock;
3005
3006                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3007         }
3008
3009 schedule_time_event:
3010         /* Schedule the time events */
3011         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3012
3013 out_unlock:
3014         mutex_unlock(&mvm->mutex);
3015         IWL_DEBUG_MAC80211(mvm, "leave\n");
3016         return ret;
3017 }
3018
3019 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3020 {
3021         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3022
3023         IWL_DEBUG_MAC80211(mvm, "enter\n");
3024
3025         mutex_lock(&mvm->mutex);
3026         iwl_mvm_stop_roc(mvm);
3027         mutex_unlock(&mvm->mutex);
3028
3029         IWL_DEBUG_MAC80211(mvm, "leave\n");
3030         return 0;
3031 }
3032
3033 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3034                                  struct ieee80211_chanctx_conf *ctx)
3035 {
3036         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3037         struct iwl_mvm_phy_ctxt *phy_ctxt;
3038         int ret;
3039
3040         lockdep_assert_held(&mvm->mutex);
3041
3042         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3043
3044         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3045         if (!phy_ctxt) {
3046                 ret = -ENOSPC;
3047                 goto out;
3048         }
3049
3050         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3051                                        ctx->rx_chains_static,
3052                                        ctx->rx_chains_dynamic);
3053         if (ret) {
3054                 IWL_ERR(mvm, "Failed to add PHY context\n");
3055                 goto out;
3056         }
3057
3058         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3059         *phy_ctxt_id = phy_ctxt->id;
3060 out:
3061         return ret;
3062 }
3063
3064 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3065                                struct ieee80211_chanctx_conf *ctx)
3066 {
3067         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3068         int ret;
3069
3070         mutex_lock(&mvm->mutex);
3071         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3072         mutex_unlock(&mvm->mutex);
3073
3074         return ret;
3075 }
3076
3077 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3078                                      struct ieee80211_chanctx_conf *ctx)
3079 {
3080         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3081         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3082
3083         lockdep_assert_held(&mvm->mutex);
3084
3085         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3086 }
3087
3088 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3089                                    struct ieee80211_chanctx_conf *ctx)
3090 {
3091         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3092
3093         mutex_lock(&mvm->mutex);
3094         __iwl_mvm_remove_chanctx(mvm, ctx);
3095         mutex_unlock(&mvm->mutex);
3096 }
3097
3098 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3099                                    struct ieee80211_chanctx_conf *ctx,
3100                                    u32 changed)
3101 {
3102         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3103         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3104         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3105
3106         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3107                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3108                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3109                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3110                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3111                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3112                       phy_ctxt->ref, changed))
3113                 return;
3114
3115         mutex_lock(&mvm->mutex);
3116         iwl_mvm_bt_coex_vif_change(mvm);
3117         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3118                                  ctx->rx_chains_static,
3119                                  ctx->rx_chains_dynamic);
3120         mutex_unlock(&mvm->mutex);
3121 }
3122
3123 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3124                                         struct ieee80211_vif *vif,
3125                                         struct ieee80211_chanctx_conf *ctx,
3126                                         bool switching_chanctx)
3127 {
3128         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3129         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3130         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3131         int ret;
3132
3133         lockdep_assert_held(&mvm->mutex);
3134
3135         mvmvif->phy_ctxt = phy_ctxt;
3136
3137         switch (vif->type) {
3138         case NL80211_IFTYPE_AP:
3139                 /* only needed if we're switching chanctx (i.e. during CSA) */
3140                 if (switching_chanctx) {
3141                         mvmvif->ap_ibss_active = true;
3142                         break;
3143                 }
3144         case NL80211_IFTYPE_ADHOC:
3145                 /*
3146                  * The AP binding flow is handled as part of the start_ap flow
3147                  * (in bss_info_changed), similarly for IBSS.
3148                  */
3149                 ret = 0;
3150                 goto out;
3151         case NL80211_IFTYPE_STATION:
3152                 break;
3153         case NL80211_IFTYPE_MONITOR:
3154                 /* always disable PS when a monitor interface is active */
3155                 mvmvif->ps_disabled = true;
3156                 break;
3157         default:
3158                 ret = -EINVAL;
3159                 goto out;
3160         }
3161
3162         ret = iwl_mvm_binding_add_vif(mvm, vif);
3163         if (ret)
3164                 goto out;
3165
3166         /*
3167          * Power state must be updated before quotas,
3168          * otherwise fw will complain.
3169          */
3170         iwl_mvm_power_update_mac(mvm);
3171
3172         /* Setting the quota at this stage is only required for monitor
3173          * interfaces. For the other types, the bss_info changed flow
3174          * will handle quota settings.
3175          */
3176         if (vif->type == NL80211_IFTYPE_MONITOR) {
3177                 mvmvif->monitor_active = true;
3178                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3179                 if (ret)
3180                         goto out_remove_binding;
3181
3182                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3183                 if (ret)
3184                         goto out_remove_binding;
3185
3186         }
3187
3188         /* Handle binding during CSA */
3189         if (vif->type == NL80211_IFTYPE_AP) {
3190                 iwl_mvm_update_quotas(mvm, false, NULL);
3191                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3192         }
3193
3194         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3195                 u32 duration = 2 * vif->bss_conf.beacon_int;
3196
3197                 /* iwl_mvm_protect_session() reads directly from the
3198                  * device (the system time), so make sure it is
3199                  * available.
3200                  */
3201                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3202                 if (ret)
3203                         goto out_remove_binding;
3204
3205                 /* Protect the session to make sure we hear the first
3206                  * beacon on the new channel.
3207                  */
3208                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3209                                         vif->bss_conf.beacon_int / 2,
3210                                         true);
3211
3212                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3213
3214                 iwl_mvm_update_quotas(mvm, false, NULL);
3215         }
3216
3217         goto out;
3218
3219 out_remove_binding:
3220         iwl_mvm_binding_remove_vif(mvm, vif);
3221         iwl_mvm_power_update_mac(mvm);
3222 out:
3223         if (ret)
3224                 mvmvif->phy_ctxt = NULL;
3225         return ret;
3226 }
3227 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3228                                       struct ieee80211_vif *vif,
3229                                       struct ieee80211_chanctx_conf *ctx)
3230 {
3231         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3232         int ret;
3233
3234         mutex_lock(&mvm->mutex);
3235         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3236         mutex_unlock(&mvm->mutex);
3237
3238         return ret;
3239 }
3240
3241 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3242                                            struct ieee80211_vif *vif,
3243                                            struct ieee80211_chanctx_conf *ctx,
3244                                            bool switching_chanctx)
3245 {
3246         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3247         struct ieee80211_vif *disabled_vif = NULL;
3248
3249         lockdep_assert_held(&mvm->mutex);
3250
3251         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3252
3253         switch (vif->type) {
3254         case NL80211_IFTYPE_ADHOC:
3255                 goto out;
3256         case NL80211_IFTYPE_MONITOR:
3257                 mvmvif->monitor_active = false;
3258                 mvmvif->ps_disabled = false;
3259                 iwl_mvm_rm_snif_sta(mvm, vif);
3260                 break;
3261         case NL80211_IFTYPE_AP:
3262                 /* This part is triggered only during CSA */
3263                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3264                         goto out;
3265
3266                 mvmvif->csa_countdown = false;
3267
3268                 /* Set CS bit on all the stations */
3269                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3270
3271                 /* Save blocked iface, the timeout is set on the next beacon */
3272                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3273
3274                 mvmvif->ap_ibss_active = false;
3275                 break;
3276         case NL80211_IFTYPE_STATION:
3277                 if (!switching_chanctx)
3278                         break;
3279
3280                 disabled_vif = vif;
3281
3282                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3283                 break;
3284         default:
3285                 break;
3286         }
3287
3288         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3289         iwl_mvm_binding_remove_vif(mvm, vif);
3290
3291 out:
3292         mvmvif->phy_ctxt = NULL;
3293         iwl_mvm_power_update_mac(mvm);
3294 }
3295
3296 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3297                                          struct ieee80211_vif *vif,
3298                                          struct ieee80211_chanctx_conf *ctx)
3299 {
3300         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3301
3302         mutex_lock(&mvm->mutex);
3303         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3304         mutex_unlock(&mvm->mutex);
3305 }
3306
3307 static int
3308 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3309                                 struct ieee80211_vif_chanctx_switch *vifs)
3310 {
3311         int ret;
3312
3313         mutex_lock(&mvm->mutex);
3314         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3315         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3316
3317         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3318         if (ret) {
3319                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3320                 goto out_reassign;
3321         }
3322
3323         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3324                                            true);
3325         if (ret) {
3326                 IWL_ERR(mvm,
3327                         "failed to assign new_ctx during channel switch\n");
3328                 goto out_remove;
3329         }
3330
3331         /* we don't support TDLS during DCM - can be caused by channel switch */
3332         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3333                 iwl_mvm_teardown_tdls_peers(mvm);
3334
3335         goto out;
3336
3337 out_remove:
3338         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3339
3340 out_reassign:
3341         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3342                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3343                 goto out_restart;
3344         }
3345
3346         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3347                                          true)) {
3348                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3349                 goto out_restart;
3350         }
3351
3352         goto out;
3353
3354 out_restart:
3355         /* things keep failing, better restart the hw */
3356         iwl_mvm_nic_restart(mvm, false);
3357
3358 out:
3359         mutex_unlock(&mvm->mutex);
3360
3361         return ret;
3362 }
3363
3364 static int
3365 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3366                                     struct ieee80211_vif_chanctx_switch *vifs)
3367 {
3368         int ret;
3369
3370         mutex_lock(&mvm->mutex);
3371         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3372
3373         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3374                                            true);
3375         if (ret) {
3376                 IWL_ERR(mvm,
3377                         "failed to assign new_ctx during channel switch\n");
3378                 goto out_reassign;
3379         }
3380
3381         goto out;
3382
3383 out_reassign:
3384         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3385                                          true)) {
3386                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3387                 goto out_restart;
3388         }
3389
3390         goto out;
3391
3392 out_restart:
3393         /* things keep failing, better restart the hw */
3394         iwl_mvm_nic_restart(mvm, false);
3395
3396 out:
3397         mutex_unlock(&mvm->mutex);
3398
3399         return ret;
3400 }
3401
3402 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3403                                       struct ieee80211_vif_chanctx_switch *vifs,
3404                                       int n_vifs,
3405                                       enum ieee80211_chanctx_switch_mode mode)
3406 {
3407         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3408         int ret;
3409
3410         /* we only support a single-vif right now */
3411         if (n_vifs > 1)
3412                 return -EOPNOTSUPP;
3413
3414         switch (mode) {
3415         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3416                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3417                 break;
3418         case CHANCTX_SWMODE_REASSIGN_VIF:
3419                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3420                 break;
3421         default:
3422                 ret = -EOPNOTSUPP;
3423                 break;
3424         }
3425
3426         return ret;
3427 }
3428
3429 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3430                            struct ieee80211_sta *sta,
3431                            bool set)
3432 {
3433         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3434         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3435
3436         if (!mvm_sta || !mvm_sta->vif) {
3437                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3438                 return -EINVAL;
3439         }
3440
3441         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3442 }
3443
3444 #ifdef CONFIG_NL80211_TESTMODE
3445 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3446         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3447         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3448         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3449 };
3450
3451 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3452                                       struct ieee80211_vif *vif,
3453                                       void *data, int len)
3454 {
3455         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3456         int err;
3457         u32 noa_duration;
3458
3459         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3460         if (err)
3461                 return err;
3462
3463         if (!tb[IWL_MVM_TM_ATTR_CMD])
3464                 return -EINVAL;
3465
3466         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3467         case IWL_MVM_TM_CMD_SET_NOA:
3468                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3469                     !vif->bss_conf.enable_beacon ||
3470                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3471                         return -EINVAL;
3472
3473                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3474                 if (noa_duration >= vif->bss_conf.beacon_int)
3475                         return -EINVAL;
3476
3477                 mvm->noa_duration = noa_duration;
3478                 mvm->noa_vif = vif;
3479
3480                 return iwl_mvm_update_quotas(mvm, false, NULL);
3481         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3482                 /* must be associated client vif - ignore authorized */
3483                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3484                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3485                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3486                         return -EINVAL;
3487
3488                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3489                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3490                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3491         }
3492
3493         return -EOPNOTSUPP;
3494 }
3495
3496 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3497                                     struct ieee80211_vif *vif,
3498                                     void *data, int len)
3499 {
3500         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3501         int err;
3502
3503         mutex_lock(&mvm->mutex);
3504         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3505         mutex_unlock(&mvm->mutex);
3506
3507         return err;
3508 }
3509 #endif
3510
3511 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3512                                    struct ieee80211_vif *vif,
3513                                    struct ieee80211_channel_switch *chsw)
3514 {
3515         /* By implementing this operation, we prevent mac80211 from
3516          * starting its own channel switch timer, so that we can call
3517          * ieee80211_chswitch_done() ourselves at the right time
3518          * (which is when the absence time event starts).
3519          */
3520
3521         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3522                            "dummy channel switch op\n");
3523 }
3524
3525 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3526                                       struct ieee80211_vif *vif,
3527                                       struct ieee80211_channel_switch *chsw)
3528 {
3529         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3530         struct ieee80211_vif *csa_vif;
3531         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3532         u32 apply_time;
3533         int ret;
3534
3535         mutex_lock(&mvm->mutex);
3536
3537         mvmvif->csa_failed = false;
3538
3539         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3540                            chsw->chandef.center_freq1);
3541
3542         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3543
3544         switch (vif->type) {
3545         case NL80211_IFTYPE_AP:
3546                 csa_vif =
3547                         rcu_dereference_protected(mvm->csa_vif,
3548                                                   lockdep_is_held(&mvm->mutex));
3549                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3550                               "Another CSA is already in progress")) {
3551                         ret = -EBUSY;
3552                         goto out_unlock;
3553                 }
3554
3555                 rcu_assign_pointer(mvm->csa_vif, vif);
3556
3557                 if (WARN_ONCE(mvmvif->csa_countdown,
3558                               "Previous CSA countdown didn't complete")) {
3559                         ret = -EBUSY;
3560                         goto out_unlock;
3561                 }
3562
3563                 break;
3564         case NL80211_IFTYPE_STATION:
3565                 /* Schedule the time event to a bit before beacon 1,
3566                  * to make sure we're in the new channel when the
3567                  * GO/AP arrives.
3568                  */
3569                 apply_time = chsw->device_timestamp +
3570                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3571                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3572
3573                 if (chsw->block_tx)
3574                         iwl_mvm_csa_client_absent(mvm, vif);
3575
3576                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3577                                             apply_time);
3578                 if (mvmvif->bf_data.bf_enabled) {
3579                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3580                         if (ret)
3581                                 goto out_unlock;
3582                 }
3583
3584                 break;
3585         default:
3586                 break;
3587         }
3588
3589         mvmvif->ps_disabled = true;
3590
3591         ret = iwl_mvm_power_update_ps(mvm);
3592         if (ret)
3593                 goto out_unlock;
3594
3595         /* we won't be on this channel any longer */
3596         iwl_mvm_teardown_tdls_peers(mvm);
3597
3598 out_unlock:
3599         mutex_unlock(&mvm->mutex);
3600
3601         return ret;
3602 }
3603
3604 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3605                                        struct ieee80211_vif *vif)
3606 {
3607         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3608         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3609         int ret;
3610
3611         mutex_lock(&mvm->mutex);
3612
3613         if (mvmvif->csa_failed) {
3614                 mvmvif->csa_failed = false;
3615                 ret = -EIO;
3616                 goto out_unlock;
3617         }
3618
3619         if (vif->type == NL80211_IFTYPE_STATION) {
3620                 struct iwl_mvm_sta *mvmsta;
3621
3622                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3623                                                           mvmvif->ap_sta_id);
3624
3625                 if (WARN_ON(!mvmsta)) {
3626                         ret = -EIO;
3627                         goto out_unlock;
3628                 }
3629
3630                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3631
3632                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3633
3634                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3635                 if (ret)
3636                         goto out_unlock;
3637
3638                 iwl_mvm_stop_session_protection(mvm, vif);
3639         }
3640
3641         mvmvif->ps_disabled = false;
3642
3643         ret = iwl_mvm_power_update_ps(mvm);
3644
3645 out_unlock:
3646         mutex_unlock(&mvm->mutex);
3647
3648         return ret;
3649 }
3650
3651 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3652                               struct ieee80211_vif *vif, u32 queues, bool drop)
3653 {
3654         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3655         struct iwl_mvm_vif *mvmvif;
3656         struct iwl_mvm_sta *mvmsta;
3657         struct ieee80211_sta *sta;
3658         int i;
3659         u32 msk = 0;
3660
3661         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3662                 return;
3663
3664         mutex_lock(&mvm->mutex);
3665         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3666
3667         /* flush the AP-station and all TDLS peers */
3668         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3669                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3670                                                 lockdep_is_held(&mvm->mutex));
3671                 if (IS_ERR_OR_NULL(sta))
3672                         continue;
3673
3674                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3675                 if (mvmsta->vif != vif)
3676                         continue;
3677
3678                 /* make sure only TDLS peers or the AP are flushed */
3679                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3680
3681                 msk |= mvmsta->tfd_queue_msk;
3682         }
3683
3684         if (drop) {
3685                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3686                         IWL_ERR(mvm, "flush request fail\n");
3687                 mutex_unlock(&mvm->mutex);
3688         } else {
3689                 mutex_unlock(&mvm->mutex);
3690
3691                 /* this can take a while, and we may need/want other operations
3692                  * to succeed while doing this, so do it without the mutex held
3693                  */
3694                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3695         }
3696 }
3697
3698 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3699                                   struct survey_info *survey)
3700 {
3701         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3702         int ret;
3703
3704         memset(survey, 0, sizeof(*survey));
3705
3706         /* only support global statistics right now */
3707         if (idx != 0)
3708                 return -ENOENT;
3709
3710         if (fw_has_capa(&mvm->fw->ucode_capa,
3711                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3712                 return -ENOENT;
3713
3714         mutex_lock(&mvm->mutex);
3715
3716         if (mvm->ucode_loaded) {
3717                 ret = iwl_mvm_request_statistics(mvm, false);
3718                 if (ret)
3719                         goto out;
3720         }
3721
3722         survey->filled = SURVEY_INFO_TIME |
3723                          SURVEY_INFO_TIME_RX |
3724                          SURVEY_INFO_TIME_TX |
3725                          SURVEY_INFO_TIME_SCAN;
3726         survey->time = mvm->accu_radio_stats.on_time_rf +
3727                        mvm->radio_stats.on_time_rf;
3728         do_div(survey->time, USEC_PER_MSEC);
3729
3730         survey->time_rx = mvm->accu_radio_stats.rx_time +
3731                           mvm->radio_stats.rx_time;
3732         do_div(survey->time_rx, USEC_PER_MSEC);
3733
3734         survey->time_tx = mvm->accu_radio_stats.tx_time +
3735                           mvm->radio_stats.tx_time;
3736         do_div(survey->time_tx, USEC_PER_MSEC);
3737
3738         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3739                             mvm->radio_stats.on_time_scan;
3740         do_div(survey->time_scan, USEC_PER_MSEC);
3741
3742         ret = 0;
3743  out:
3744         mutex_unlock(&mvm->mutex);
3745         return ret;
3746 }
3747
3748 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3749                                        struct ieee80211_vif *vif,
3750                                        struct ieee80211_sta *sta,
3751                                        struct station_info *sinfo)
3752 {
3753         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3754         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3755         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3756
3757         if (fw_has_capa(&mvm->fw->ucode_capa,
3758                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3759                 return;
3760
3761         /* if beacon filtering isn't on mac80211 does it anyway */
3762         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3763                 return;
3764
3765         if (!vif->bss_conf.assoc)
3766                 return;
3767
3768         mutex_lock(&mvm->mutex);
3769
3770         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3771                 goto unlock;
3772
3773         if (iwl_mvm_request_statistics(mvm, false))
3774                 goto unlock;
3775
3776         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3777                            mvmvif->beacon_stats.accu_num_beacons;
3778         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3779         if (mvmvif->beacon_stats.avg_signal) {
3780                 /* firmware only reports a value after RXing a few beacons */
3781                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3782                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3783         }
3784  unlock:
3785         mutex_unlock(&mvm->mutex);
3786 }
3787
3788 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3789                                         struct ieee80211_vif *vif,
3790                                         const struct ieee80211_event *event)
3791 {
3792 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3793         do {                                                    \
3794                 if ((_cnt) && --(_cnt))                         \
3795                         break;                                  \
3796                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3797         } while (0)
3798
3799         struct iwl_fw_dbg_trigger_tlv *trig;
3800         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3801
3802         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3803                 return;
3804
3805         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3806         trig_mlme = (void *)trig->data;
3807         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3808                 return;
3809
3810         if (event->u.mlme.data == ASSOC_EVENT) {
3811                 if (event->u.mlme.status == MLME_DENIED)
3812                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3813                                            trig_mlme->stop_assoc_denied,
3814                                            "DENIED ASSOC: reason %d",
3815                                             event->u.mlme.reason);
3816                 else if (event->u.mlme.status == MLME_TIMEOUT)
3817                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3818                                            trig_mlme->stop_assoc_timeout,
3819                                            "ASSOC TIMEOUT");
3820         } else if (event->u.mlme.data == AUTH_EVENT) {
3821                 if (event->u.mlme.status == MLME_DENIED)
3822                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3823                                            trig_mlme->stop_auth_denied,
3824                                            "DENIED AUTH: reason %d",
3825                                            event->u.mlme.reason);
3826                 else if (event->u.mlme.status == MLME_TIMEOUT)
3827                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3828                                            trig_mlme->stop_auth_timeout,
3829                                            "AUTH TIMEOUT");
3830         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3831                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3832                                    trig_mlme->stop_rx_deauth,
3833                                    "DEAUTH RX %d", event->u.mlme.reason);
3834         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3835                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3836                                    trig_mlme->stop_tx_deauth,
3837                                    "DEAUTH TX %d", event->u.mlme.reason);
3838         }
3839 #undef CHECK_MLME_TRIGGER
3840 }
3841
3842 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3843                                           struct ieee80211_vif *vif,
3844                                           const struct ieee80211_event *event)
3845 {
3846         struct iwl_fw_dbg_trigger_tlv *trig;
3847         struct iwl_fw_dbg_trigger_ba *ba_trig;
3848
3849         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3850                 return;
3851
3852         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3853         ba_trig = (void *)trig->data;
3854         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3855                 return;
3856
3857         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3858                 return;
3859
3860         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3861                                     "BAR received from %pM, tid %d, ssn %d",
3862                                     event->u.ba.sta->addr, event->u.ba.tid,
3863                                     event->u.ba.ssn);
3864 }
3865
3866 static void
3867 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3868                                      struct ieee80211_vif *vif,
3869                                      const struct ieee80211_event *event)
3870 {
3871         struct iwl_fw_dbg_trigger_tlv *trig;
3872         struct iwl_fw_dbg_trigger_ba *ba_trig;
3873
3874         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3875                 return;
3876
3877         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3878         ba_trig = (void *)trig->data;
3879         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3880                 return;
3881
3882         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3883                 return;
3884
3885         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3886                                     "Frame from %pM timed out, tid %d",
3887                                     event->u.ba.sta->addr, event->u.ba.tid);
3888 }
3889
3890 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3891                                        struct ieee80211_vif *vif,
3892                                        const struct ieee80211_event *event)
3893 {
3894         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3895
3896         switch (event->type) {
3897         case MLME_EVENT:
3898                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3899                 break;
3900         case BAR_RX_EVENT:
3901                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3902                 break;
3903         case BA_FRAME_TIMEOUT:
3904                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3905                 break;
3906         default:
3907                 break;
3908         }
3909 }
3910
3911 const struct ieee80211_ops iwl_mvm_hw_ops = {
3912         .tx = iwl_mvm_mac_tx,
3913         .ampdu_action = iwl_mvm_mac_ampdu_action,
3914         .start = iwl_mvm_mac_start,
3915         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3916         .stop = iwl_mvm_mac_stop,
3917         .add_interface = iwl_mvm_mac_add_interface,
3918         .remove_interface = iwl_mvm_mac_remove_interface,
3919         .config = iwl_mvm_mac_config,
3920         .prepare_multicast = iwl_mvm_prepare_multicast,
3921         .configure_filter = iwl_mvm_configure_filter,
3922         .config_iface_filter = iwl_mvm_config_iface_filter,
3923         .bss_info_changed = iwl_mvm_bss_info_changed,
3924         .hw_scan = iwl_mvm_mac_hw_scan,
3925         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3926         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3927         .sta_state = iwl_mvm_mac_sta_state,
3928         .sta_notify = iwl_mvm_mac_sta_notify,
3929         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3930         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3931         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3932         .sta_rc_update = iwl_mvm_sta_rc_update,
3933         .conf_tx = iwl_mvm_mac_conf_tx,
3934         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3935         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3936         .flush = iwl_mvm_mac_flush,
3937         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3938         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3939         .set_key = iwl_mvm_mac_set_key,
3940         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3941         .remain_on_channel = iwl_mvm_roc,
3942         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3943         .add_chanctx = iwl_mvm_add_chanctx,
3944         .remove_chanctx = iwl_mvm_remove_chanctx,
3945         .change_chanctx = iwl_mvm_change_chanctx,
3946         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3947         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3948         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3949
3950         .start_ap = iwl_mvm_start_ap_ibss,
3951         .stop_ap = iwl_mvm_stop_ap_ibss,
3952         .join_ibss = iwl_mvm_start_ap_ibss,
3953         .leave_ibss = iwl_mvm_stop_ap_ibss,
3954
3955         .set_tim = iwl_mvm_set_tim,
3956
3957         .channel_switch = iwl_mvm_channel_switch,
3958         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3959         .post_channel_switch = iwl_mvm_post_channel_switch,
3960
3961         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3962         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3963         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3964
3965         .event_callback = iwl_mvm_mac_event_callback,
3966
3967         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3968
3969 #ifdef CONFIG_PM_SLEEP
3970         /* look at d3.c */
3971         .suspend = iwl_mvm_suspend,
3972         .resume = iwl_mvm_resume,
3973         .set_wakeup = iwl_mvm_set_wakeup,
3974         .set_rekey_data = iwl_mvm_set_rekey_data,
3975 #if IS_ENABLED(CONFIG_IPV6)
3976         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3977 #endif
3978         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3979 #endif
3980         .get_survey = iwl_mvm_mac_get_survey,
3981         .sta_statistics = iwl_mvm_mac_sta_statistics,
3982 };