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