drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
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  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  37  * All rights reserved.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
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  43  *  * Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
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  46  *    notice, this list of conditions and the following disclaimer in
  47  *    the documentation and/or other materials provided with the
  48  *    distribution.
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  50  *    contributors may be used to endorse or promote products derived
  51  *    from this software without specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  54  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  55  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  56  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  57  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  58  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  59  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  63  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  64  *
  65  *****************************************************************************/
  66 #include <linux/kernel.h>
  67 #include <linux/slab.h>
  68 #include <linux/skbuff.h>
  69 #include <linux/netdevice.h>
  70 #include <linux/etherdevice.h>
  71 #include <linux/ip.h>
  72 #include <linux/if_arp.h>
  73 #include <linux/time.h>
  74 #include <net/mac80211.h>
  75 #include <net/ieee80211_radiotap.h>
  76 #include <net/tcp.h>
  77
  78 #include "iwl-op-mode.h"
  79 #include "iwl-io.h"
  80 #include "mvm.h"
  81 #include "sta.h"
  82 #include "time-event.h"
  83 #include "iwl-eeprom-parse.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88 #include "iwl-nvm-parse.h"
  89 #include "fw-dbg.h"
  90
  91 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_STATION),
  95         },
  96         {
  97                 .max = 1,
  98                 .types = BIT(NL80211_IFTYPE_AP) |
  99                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 100                         BIT(NL80211_IFTYPE_P2P_GO),
 101         },
 102         {
 103                 .max = 1,
 104                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 105         },
 106 };
 107
 108 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 109         {
 110                 .num_different_channels = 2,
 111                 .max_interfaces = 3,
 112                 .limits = iwl_mvm_limits,
 113                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 114         },
 115 };
 116
 117 #ifdef CONFIG_PM_SLEEP
 118 static const struct nl80211_wowlan_tcp_data_token_feature
 119 iwl_mvm_wowlan_tcp_token_feature = {
 120         .min_len = 0,
 121         .max_len = 255,
 122         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 123 };
 124
 125 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 126         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 127         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 128                             sizeof(struct ethhdr) -
 129                             sizeof(struct iphdr) -
 130                             sizeof(struct tcphdr),
 131         .data_interval_max = 65535, /* __le16 in API */
 132         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 133                             sizeof(struct ethhdr) -
 134                             sizeof(struct iphdr) -
 135                             sizeof(struct tcphdr),
 136         .seq = true,
 137 };
 138 #endif
 139
 140 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 141 /*
 142  * Use the reserved field to indicate magic values.
 143  * these values will only be used internally by the driver,
 144  * and won't make it to the fw (reserved will be 0).
 145  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 146  *      be the vif's ip address. in case there is not a single
 147  *      ip address (0, or more than 1), this attribute will
 148  *      be skipped.
 149  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 150  *      the LSB bytes of the vif's mac address
 151  */
 152 enum {
 153         BC_FILTER_MAGIC_NONE = 0,
 154         BC_FILTER_MAGIC_IP,
 155         BC_FILTER_MAGIC_MAC,
 156 };
 157
 158 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 159         {
 160                 /* arp */
 161                 .discard = 0,
 162                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 163                 .attrs = {
 164                         {
 165                                 /* frame type - arp, hw type - ethernet */
 166                                 .offset_type =
 167                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 168                                 .offset = sizeof(rfc1042_header),
 169                                 .val = cpu_to_be32(0x08060001),
 170                                 .mask = cpu_to_be32(0xffffffff),
 171                         },
 172                         {
 173                                 /* arp dest ip */
 174                                 .offset_type =
 175                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 176                                 .offset = sizeof(rfc1042_header) + 2 +
 177                                           sizeof(struct arphdr) +
 178                                           ETH_ALEN + sizeof(__be32) +
 179                                           ETH_ALEN,
 180                                 .mask = cpu_to_be32(0xffffffff),
 181                                 /* mark it as special field */
 182                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 183                         },
 184                 },
 185         },
 186         {
 187                 /* dhcp offer bcast */
 188                 .discard = 0,
 189                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 190                 .attrs = {
 191                         {
 192                                 /* udp dest port - 68 (bootp client)*/
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = offsetof(struct udphdr, dest),
 195                                 .val = cpu_to_be32(0x00440000),
 196                                 .mask = cpu_to_be32(0xffff0000),
 197                         },
 198                         {
 199                                 /* dhcp - lsb bytes of client hw address */
 200                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 201                                 .offset = 38,
 202                                 .mask = cpu_to_be32(0xffffffff),
 203                                 /* mark it as special field */
 204                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 205                         },
 206                 },
 207         },
 208         /* last filter must be empty */
 209         {},
 210 };
 211 #endif
 212
 213 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 214 {
 215         if (!iwl_mvm_is_d0i3_supported(mvm))
 216                 return;
 217
 218         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 219         spin_lock_bh(&mvm->refs_lock);
 220         mvm->refs[ref_type]++;
 221         spin_unlock_bh(&mvm->refs_lock);
 222         iwl_trans_ref(mvm->trans);
 223 }
 224
 225 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 226 {
 227         if (!iwl_mvm_is_d0i3_supported(mvm))
 228                 return;
 229
 230         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 231         spin_lock_bh(&mvm->refs_lock);
 232         WARN_ON(!mvm->refs[ref_type]--);
 233         spin_unlock_bh(&mvm->refs_lock);
 234         iwl_trans_unref(mvm->trans);
 235 }
 236
 237 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 238                                      enum iwl_mvm_ref_type except_ref)
 239 {
 240         int i, j;
 241
 242         if (!iwl_mvm_is_d0i3_supported(mvm))
 243                 return;
 244
 245         spin_lock_bh(&mvm->refs_lock);
 246         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 247                 if (except_ref == i || !mvm->refs[i])
 248                         continue;
 249
 250                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 251                               i, mvm->refs[i]);
 252                 for (j = 0; j < mvm->refs[i]; j++)
 253                         iwl_trans_unref(mvm->trans);
 254                 mvm->refs[i] = 0;
 255         }
 256         spin_unlock_bh(&mvm->refs_lock);
 257 }
 258
 259 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 260 {
 261         int i;
 262         bool taken = false;
 263
 264         if (!iwl_mvm_is_d0i3_supported(mvm))
 265                 return true;
 266
 267         spin_lock_bh(&mvm->refs_lock);
 268         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 269                 if (mvm->refs[i]) {
 270                         taken = true;
 271                         break;
 272                 }
 273         }
 274         spin_unlock_bh(&mvm->refs_lock);
 275
 276         return taken;
 277 }
 278
 279 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 280 {
 281         iwl_mvm_ref(mvm, ref_type);
 282
 283         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 284                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 285                                 HZ)) {
 286                 WARN_ON_ONCE(1);
 287                 iwl_mvm_unref(mvm, ref_type);
 288                 return -EIO;
 289         }
 290
 291         return 0;
 292 }
 293
 294 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 295 {
 296         int i;
 297
 298         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 299         for (i = 0; i < NUM_PHY_CTX; i++) {
 300                 mvm->phy_ctxts[i].id = i;
 301                 mvm->phy_ctxts[i].ref = 0;
 302         }
 303 }
 304
 305 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 306                                                   const char *alpha2,
 307                                                   enum iwl_mcc_source src_id,
 308                                                   bool *changed)
 309 {
 310         struct ieee80211_regdomain *regd = NULL;
 311         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 313         struct iwl_mcc_update_resp *resp;
 314
 315         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 316
 317         lockdep_assert_held(&mvm->mutex);
 318
 319         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 320         if (IS_ERR_OR_NULL(resp)) {
 321                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 322                               PTR_ERR_OR_ZERO(resp));
 323                 goto out;
 324         }
 325
 326         if (changed)
 327                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 328
 329         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 330                                       __le32_to_cpu(resp->n_channels),
 331                                       resp->channels,
 332                                       __le16_to_cpu(resp->mcc));
 333         /* Store the return source id */
 334         src_id = resp->source_id;
 335         kfree(resp);
 336         if (IS_ERR_OR_NULL(regd)) {
 337                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 338                               PTR_ERR_OR_ZERO(regd));
 339                 goto out;
 340         }
 341
 342         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 343                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 344         mvm->lar_regdom_set = true;
 345         mvm->mcc_src = src_id;
 346
 347 out:
 348         return regd;
 349 }
 350
 351 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 352 {
 353         bool changed;
 354         struct ieee80211_regdomain *regd;
 355
 356         if (!iwl_mvm_is_lar_supported(mvm))
 357                 return;
 358
 359         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 360         if (!IS_ERR_OR_NULL(regd)) {
 361                 /* only update the regulatory core if changed */
 362                 if (changed)
 363                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 364
 365                 kfree(regd);
 366         }
 367 }
 368
 369 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 370                                                           bool *changed)
 371 {
 372         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 373                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 374                                      MCC_SOURCE_GET_CURRENT :
 375                                      MCC_SOURCE_OLD_FW, changed);
 376 }
 377
 378 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 379 {
 380         enum iwl_mcc_source used_src;
 381         struct ieee80211_regdomain *regd;
 382         int ret;
 383         bool changed;
 384         const struct ieee80211_regdomain *r =
 385                         rtnl_dereference(mvm->hw->wiphy->regd);
 386
 387         if (!r)
 388                 return -ENOENT;
 389
 390         /* save the last source in case we overwrite it below */
 391         used_src = mvm->mcc_src;
 392         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 393                 /* Notify the firmware we support wifi location updates */
 394                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 395                 if (!IS_ERR_OR_NULL(regd))
 396                         kfree(regd);
 397         }
 398
 399         /* Now set our last stored MCC and source */
 400         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 401                                      &changed);
 402         if (IS_ERR_OR_NULL(regd))
 403                 return -EIO;
 404
 405         /* update cfg80211 if the regdomain was changed */
 406         if (changed)
 407                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 408         else
 409                 ret = 0;
 410
 411         kfree(regd);
 412         return ret;
 413 }
 414
 415 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 416 {
 417         struct ieee80211_hw *hw = mvm->hw;
 418         int num_mac, ret, i;
 419         static const u32 mvm_ciphers[] = {
 420                 WLAN_CIPHER_SUITE_WEP40,
 421                 WLAN_CIPHER_SUITE_WEP104,
 422                 WLAN_CIPHER_SUITE_TKIP,
 423                 WLAN_CIPHER_SUITE_CCMP,
 424         };
 425
 426         /* Tell mac80211 our characteristics */
 427         ieee80211_hw_set(hw, SIGNAL_DBM);
 428         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 429         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 430         ieee80211_hw_set(hw, QUEUE_CONTROL);
 431         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 432         ieee80211_hw_set(hw, SUPPORTS_PS);
 433         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 434         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 435         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 436         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 437         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 438         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 439         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 440         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 441         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 442
 443         if (mvm->trans->max_skb_frags)
 444                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 445
 446         hw->queues = mvm->first_agg_queue;
 447         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 448         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 449                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 450         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 451                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 452         hw->rate_control_algorithm = "iwl-mvm-rs";
 453         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 454         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 455
 456         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
 457         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 458         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 459         hw->wiphy->cipher_suites = mvm->ciphers;
 460
 461         /*
 462          * Enable 11w if advertised by firmware and software crypto
 463          * is not enabled (as the firmware will interpret some mgmt
 464          * packets, so enabling it with software crypto isn't safe)
 465          */
 466         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 467             !iwlwifi_mod_params.sw_crypto) {
 468                 ieee80211_hw_set(hw, MFP_CAPABLE);
 469                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 470                         WLAN_CIPHER_SUITE_AES_CMAC;
 471                 hw->wiphy->n_cipher_suites++;
 472         }
 473
 474         /* currently FW API supports only one optional cipher scheme */
 475         if (mvm->fw->cs[0].cipher) {
 476                 mvm->hw->n_cipher_schemes = 1;
 477                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 478                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 479                         mvm->fw->cs[0].cipher;
 480                 hw->wiphy->n_cipher_suites++;
 481         }
 482
 483         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 484         hw->wiphy->features |=
 485                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 486                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 487                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 488
 489         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 490         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 491         hw->chanctx_data_size = sizeof(u16);
 492
 493         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 494                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 495                 BIT(NL80211_IFTYPE_AP) |
 496                 BIT(NL80211_IFTYPE_P2P_GO) |
 497                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 498                 BIT(NL80211_IFTYPE_ADHOC);
 499
 500         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 501         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 502         if (iwl_mvm_is_lar_supported(mvm))
 503                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 504         else
 505                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 506                                                REGULATORY_DISABLE_BEACON_HINTS;
 507
 508         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 509                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 510
 511         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 512
 513         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 514         hw->wiphy->n_iface_combinations =
 515                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 516
 517         hw->wiphy->max_remain_on_channel_duration = 10000;
 518         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 519         /* we can compensate an offset of up to 3 channels = 15 MHz */
 520         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 521
 522         /* Extract MAC address */
 523         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 524         hw->wiphy->addresses = mvm->addresses;
 525         hw->wiphy->n_addresses = 1;
 526
 527         /* Extract additional MAC addresses if available */
 528         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 529                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 530
 531         for (i = 1; i < num_mac; i++) {
 532                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 533                        ETH_ALEN);
 534                 mvm->addresses[i].addr[5]++;
 535                 hw->wiphy->n_addresses++;
 536         }
 537
 538         iwl_mvm_reset_phy_ctxts(mvm);
 539
 540         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 541
 542         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 543
 544         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 545         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 546                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 547
 548         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 549                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 550         else
 551                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 552
 553         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 554                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 555                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 556         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 557                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 558                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 559
 560                 if (fw_has_capa(&mvm->fw->ucode_capa,
 561                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 562                     fw_has_api(&mvm->fw->ucode_capa,
 563                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 564                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 565                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 566         }
 567
 568         hw->wiphy->hw_version = mvm->trans->hw_id;
 569
 570         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 571                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 572         else
 573                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 574
 575         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 576         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 577         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 578         /* we create the 802.11 header and zero length SSID IE. */
 579         hw->wiphy->max_sched_scan_ie_len =
 580                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 581         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 582         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 583
 584         /*
 585          * the firmware uses u8 for num of iterations, but 0xff is saved for
 586          * infinite loop, so the maximum number of iterations is actually 254.
 587          */
 588         hw->wiphy->max_sched_scan_plan_iterations = 254;
 589
 590         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 591                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 592                                NL80211_FEATURE_P2P_GO_OPPPS |
 593                                NL80211_FEATURE_DYNAMIC_SMPS |
 594                                NL80211_FEATURE_STATIC_SMPS |
 595                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 596
 597         if (fw_has_capa(&mvm->fw->ucode_capa,
 598                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 599                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 600         if (fw_has_capa(&mvm->fw->ucode_capa,
 601                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 602                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 603
 604         if (fw_has_capa(&mvm->fw->ucode_capa,
 605                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 606                 hw->wiphy->features |=
 607                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 608
 609         if (fw_has_capa(&mvm->fw->ucode_capa,
 610                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 611                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 612
 613         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 614
 615 #ifdef CONFIG_PM_SLEEP
 616         if (iwl_mvm_is_d0i3_supported(mvm) &&
 617             device_can_wakeup(mvm->trans->dev)) {
 618                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 619                 hw->wiphy->wowlan = &mvm->wowlan;
 620         }
 621
 622         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 623             mvm->trans->ops->d3_suspend &&
 624             mvm->trans->ops->d3_resume &&
 625             device_can_wakeup(mvm->trans->dev)) {
 626                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 627                                      WIPHY_WOWLAN_DISCONNECT |
 628                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 629                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 630                                      WIPHY_WOWLAN_NET_DETECT;
 631                 if (!iwlwifi_mod_params.sw_crypto)
 632                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 633                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 634                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 635
 636                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 637                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 638                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 639                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 640                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 641                 hw->wiphy->wowlan = &mvm->wowlan;
 642         }
 643 #endif
 644
 645 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 646         /* assign default bcast filtering configuration */
 647         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 648 #endif
 649
 650         ret = iwl_mvm_leds_init(mvm);
 651         if (ret)
 652                 return ret;
 653
 654         if (fw_has_capa(&mvm->fw->ucode_capa,
 655                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 656                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 657                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 658                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 659         }
 660
 661         if (fw_has_capa(&mvm->fw->ucode_capa,
 662                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 663                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 664                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 665         }
 666
 667         hw->netdev_features |= mvm->cfg->features;
 668         if (!iwl_mvm_is_csum_supported(mvm))
 669                 hw->netdev_features &= ~NETIF_F_RXCSUM;
 670
 671         if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 672                 hw->netdev_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 673                         NETIF_F_TSO | NETIF_F_TSO6;
 674
 675         ret = ieee80211_register_hw(mvm->hw);
 676         if (ret)
 677                 iwl_mvm_leds_exit(mvm);
 678
 679         return ret;
 680 }
 681
 682 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 683                              struct ieee80211_sta *sta,
 684                              struct sk_buff *skb)
 685 {
 686         struct iwl_mvm_sta *mvmsta;
 687         bool defer = false;
 688
 689         /*
 690          * double check the IN_D0I3 flag both before and after
 691          * taking the spinlock, in order to prevent taking
 692          * the spinlock when not needed.
 693          */
 694         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 695                 return false;
 696
 697         spin_lock(&mvm->d0i3_tx_lock);
 698         /*
 699          * testing the flag again ensures the skb dequeue
 700          * loop (on d0i3 exit) hasn't run yet.
 701          */
 702         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 703                 goto out;
 704
 705         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 706         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 707             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 708                 goto out;
 709
 710         __skb_queue_tail(&mvm->d0i3_tx, skb);
 711         ieee80211_stop_queues(mvm->hw);
 712
 713         /* trigger wakeup */
 714         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 715         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 716
 717         defer = true;
 718 out:
 719         spin_unlock(&mvm->d0i3_tx_lock);
 720         return defer;
 721 }
 722
 723 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 724                            struct ieee80211_tx_control *control,
 725                            struct sk_buff *skb)
 726 {
 727         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 728         struct ieee80211_sta *sta = control->sta;
 729         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 730         struct ieee80211_hdr *hdr = (void *)skb->data;
 731
 732         if (iwl_mvm_is_radio_killed(mvm)) {
 733                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 734                 goto drop;
 735         }
 736
 737         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 738             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 739             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 740                 goto drop;
 741
 742         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 743         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 744                      ieee80211_is_mgmt(hdr->frame_control) &&
 745                      !ieee80211_is_deauth(hdr->frame_control) &&
 746                      !ieee80211_is_disassoc(hdr->frame_control) &&
 747                      !ieee80211_is_action(hdr->frame_control)))
 748                 sta = NULL;
 749
 750         if (sta) {
 751                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 752                         return;
 753                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 754                         goto drop;
 755                 return;
 756         }
 757
 758         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 759                 goto drop;
 760         return;
 761  drop:
 762         ieee80211_free_txskb(hw, skb);
 763 }
 764
 765 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 766 {
 767         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 768                 return false;
 769         return true;
 770 }
 771
 772 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 773 {
 774         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 775                 return false;
 776         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 777                 return true;
 778
 779         /* enabled by default */
 780         return true;
 781 }
 782
 783 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 784         do {                                                    \
 785                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 786                         break;                                  \
 787                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 788         } while (0)
 789
 790 static void
 791 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 792                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 793                             enum ieee80211_ampdu_mlme_action action)
 794 {
 795         struct iwl_fw_dbg_trigger_tlv *trig;
 796         struct iwl_fw_dbg_trigger_ba *ba_trig;
 797
 798         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 799                 return;
 800
 801         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 802         ba_trig = (void *)trig->data;
 803
 804         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 805                 return;
 806
 807         switch (action) {
 808         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 809                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 810                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 811
 812                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 813                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 814                                  sta->addr, tid, tid_data->ssn);
 815                 break;
 816                 }
 817         case IEEE80211_AMPDU_TX_STOP_CONT:
 818                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 819                                  "TX AGG STOP: MAC %pM tid %d\n",
 820                                  sta->addr, tid);
 821                 break;
 822         case IEEE80211_AMPDU_RX_START:
 823                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 824                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 825                                  sta->addr, tid, rx_ba_ssn);
 826                 break;
 827         case IEEE80211_AMPDU_RX_STOP:
 828                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 829                                  "RX AGG STOP: MAC %pM tid %d\n",
 830                                  sta->addr, tid);
 831                 break;
 832         default:
 833                 break;
 834         }
 835 }
 836
 837 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 838                                     struct ieee80211_vif *vif,
 839                                     struct ieee80211_ampdu_params *params)
 840 {
 841         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 842         int ret;
 843         bool tx_agg_ref = false;
 844         struct ieee80211_sta *sta = params->sta;
 845         enum ieee80211_ampdu_mlme_action action = params->action;
 846         u16 tid = params->tid;
 847         u16 *ssn = &params->ssn;
 848         u8 buf_size = params->buf_size;
 849         bool amsdu = params->amsdu;
 850
 851         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 852                      sta->addr, tid, action);
 853
 854         if (!(mvm->nvm_data->sku_cap_11n_enable))
 855                 return -EACCES;
 856
 857         /* return from D0i3 before starting a new Tx aggregation */
 858         switch (action) {
 859         case IEEE80211_AMPDU_TX_START:
 860         case IEEE80211_AMPDU_TX_STOP_CONT:
 861         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 862         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 863         case IEEE80211_AMPDU_TX_OPERATIONAL:
 864                 /*
 865                  * for tx start, wait synchronously until D0i3 exit to
 866                  * get the correct sequence number for the tid.
 867                  * additionally, some other ampdu actions use direct
 868                  * target access, which is not handled automatically
 869                  * by the trans layer (unlike commands), so wait for
 870                  * d0i3 exit in these cases as well.
 871                  */
 872                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 873                 if (ret)
 874                         return ret;
 875
 876                 tx_agg_ref = true;
 877                 break;
 878         default:
 879                 break;
 880         }
 881
 882         mutex_lock(&mvm->mutex);
 883
 884         switch (action) {
 885         case IEEE80211_AMPDU_RX_START:
 886                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 887                         ret = -EINVAL;
 888                         break;
 889                 }
 890                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
 891                 break;
 892         case IEEE80211_AMPDU_RX_STOP:
 893                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
 894                 break;
 895         case IEEE80211_AMPDU_TX_START:
 896                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 897                         ret = -EINVAL;
 898                         break;
 899                 }
 900                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 901                 break;
 902         case IEEE80211_AMPDU_TX_STOP_CONT:
 903                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 904                 break;
 905         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 906         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 907                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 908                 break;
 909         case IEEE80211_AMPDU_TX_OPERATIONAL:
 910                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 911                                               buf_size, amsdu);
 912                 break;
 913         default:
 914                 WARN_ON_ONCE(1);
 915                 ret = -EINVAL;
 916                 break;
 917         }
 918
 919         if (!ret) {
 920                 u16 rx_ba_ssn = 0;
 921
 922                 if (action == IEEE80211_AMPDU_RX_START)
 923                         rx_ba_ssn = *ssn;
 924
 925                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 926                                             rx_ba_ssn, action);
 927         }
 928         mutex_unlock(&mvm->mutex);
 929
 930         /*
 931          * If the tid is marked as started, we won't use it for offloaded
 932          * traffic on the next D0i3 entry. It's safe to unref.
 933          */
 934         if (tx_agg_ref)
 935                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 936
 937         return ret;
 938 }
 939
 940 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 941                                      struct ieee80211_vif *vif)
 942 {
 943         struct iwl_mvm *mvm = data;
 944         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 945
 946         mvmvif->uploaded = false;
 947         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 948
 949         spin_lock_bh(&mvm->time_event_lock);
 950         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 951         spin_unlock_bh(&mvm->time_event_lock);
 952
 953         mvmvif->phy_ctxt = NULL;
 954         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 955 }
 956
 957 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 958 {
 959         /* clear the D3 reconfig, we only need it to avoid dumping a
 960          * firmware coredump on reconfiguration, we shouldn't do that
 961          * on D3->D0 transition
 962          */
 963         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 964                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 965                 iwl_mvm_fw_error_dump(mvm);
 966         }
 967
 968         /* cleanup all stale references (scan, roc), but keep the
 969          * ucode_down ref until reconfig is complete
 970          */
 971         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 972
 973         iwl_mvm_stop_device(mvm);
 974
 975         mvm->scan_status = 0;
 976         mvm->ps_disabled = false;
 977         mvm->calibrating = false;
 978
 979         /* just in case one was running */
 980         iwl_mvm_cleanup_roc_te(mvm);
 981         ieee80211_remain_on_channel_expired(mvm->hw);
 982
 983         /*
 984          * cleanup all interfaces, even inactive ones, as some might have
 985          * gone down during the HW restart
 986          */
 987         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 988
 989         mvm->p2p_device_vif = NULL;
 990         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 991
 992         iwl_mvm_reset_phy_ctxts(mvm);
 993         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 994         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 995         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 996         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 997         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 998         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 999         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1000         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1001         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1002
1003         ieee80211_wake_queues(mvm->hw);
1004
1005         /* clear any stale d0i3 state */
1006         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1007
1008         mvm->vif_count = 0;
1009         mvm->rx_ba_sessions = 0;
1010         mvm->fw_dbg_conf = FW_DBG_INVALID;
1011
1012         /* keep statistics ticking */
1013         iwl_mvm_accu_radio_stats(mvm);
1014 }
1015
1016 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1017 {
1018         int ret;
1019
1020         lockdep_assert_held(&mvm->mutex);
1021
1022         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1023                 /* Clean up some internal and mac80211 state on restart */
1024                 iwl_mvm_restart_cleanup(mvm);
1025         } else {
1026                 /* Hold the reference to prevent runtime suspend while
1027                  * the start procedure runs.  It's a bit confusing
1028                  * that the UCODE_DOWN reference is taken, but it just
1029                  * means "UCODE is not UP yet". ( TODO: rename this
1030                  * reference).
1031                  */
1032                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1033         }
1034         ret = iwl_mvm_up(mvm);
1035
1036         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1037                 /* Something went wrong - we need to finish some cleanup
1038                  * that normally iwl_mvm_mac_restart_complete() below
1039                  * would do.
1040                  */
1041                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1042                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1043         }
1044
1045         return ret;
1046 }
1047
1048 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1049 {
1050         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1051         int ret;
1052
1053         /* Some hw restart cleanups must not hold the mutex */
1054         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1055                 /*
1056                  * Make sure we are out of d0i3. This is needed
1057                  * to make sure the reference accounting is correct
1058                  * (and there is no stale d0i3_exit_work).
1059                  */
1060                 wait_event_timeout(mvm->d0i3_exit_waitq,
1061                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1062                                              &mvm->status),
1063                                    HZ);
1064         }
1065
1066         mutex_lock(&mvm->mutex);
1067         ret = __iwl_mvm_mac_start(mvm);
1068         mutex_unlock(&mvm->mutex);
1069
1070         return ret;
1071 }
1072
1073 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1074 {
1075         int ret;
1076
1077         mutex_lock(&mvm->mutex);
1078
1079         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1080         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1081         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1082         if (ret)
1083                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1084                         ret);
1085
1086         /* allow transport/FW low power modes */
1087         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1088
1089         /*
1090          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1091          * of packets the FW sent out, so we must reconnect.
1092          */
1093         iwl_mvm_teardown_tdls_peers(mvm);
1094
1095         mutex_unlock(&mvm->mutex);
1096 }
1097
1098 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1099 {
1100         if (iwl_mvm_is_d0i3_supported(mvm) &&
1101             iwl_mvm_enter_d0i3_on_suspend(mvm))
1102                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1103                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1104                                                         &mvm->status),
1105                                               HZ),
1106                           "D0i3 exit on resume timed out\n");
1107 }
1108
1109 static void
1110 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1111                               enum ieee80211_reconfig_type reconfig_type)
1112 {
1113         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1114
1115         switch (reconfig_type) {
1116         case IEEE80211_RECONFIG_TYPE_RESTART:
1117                 iwl_mvm_restart_complete(mvm);
1118                 break;
1119         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1120                 iwl_mvm_resume_complete(mvm);
1121                 break;
1122         }
1123 }
1124
1125 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1126 {
1127         lockdep_assert_held(&mvm->mutex);
1128
1129         /* firmware counters are obviously reset now, but we shouldn't
1130          * partially track so also clear the fw_reset_accu counters.
1131          */
1132         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1133
1134         /* async_handlers_wk is now blocked */
1135
1136         /*
1137          * The work item could be running or queued if the
1138          * ROC time event stops just as we get here.
1139          */
1140         flush_work(&mvm->roc_done_wk);
1141
1142         iwl_mvm_stop_device(mvm);
1143
1144         iwl_mvm_async_handlers_purge(mvm);
1145         /* async_handlers_list is empty and will stay empty: HW is stopped */
1146
1147         /* the fw is stopped, the aux sta is dead: clean up driver state */
1148         iwl_mvm_del_aux_sta(mvm);
1149
1150         iwl_free_fw_paging(mvm);
1151
1152         /*
1153          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1154          * won't be called in this case).
1155          * But make sure to cleanup interfaces that have gone down before/during
1156          * HW restart was requested.
1157          */
1158         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1159                 ieee80211_iterate_interfaces(mvm->hw, 0,
1160                                              iwl_mvm_cleanup_iterator, mvm);
1161
1162         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1163          * make sure there's nothing left there and warn if any is found.
1164          */
1165         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1166                 int i;
1167
1168                 for (i = 0; i < mvm->max_scans; i++) {
1169                         if (WARN_ONCE(mvm->scan_uid_status[i],
1170                                       "UMAC scan UID %d status was not cleaned\n",
1171                                       i))
1172                                 mvm->scan_uid_status[i] = 0;
1173                 }
1174         }
1175 }
1176
1177 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1178 {
1179         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1180
1181         flush_work(&mvm->d0i3_exit_work);
1182         flush_work(&mvm->async_handlers_wk);
1183         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1184         iwl_mvm_free_fw_dump_desc(mvm);
1185
1186         mutex_lock(&mvm->mutex);
1187         __iwl_mvm_mac_stop(mvm);
1188         mutex_unlock(&mvm->mutex);
1189
1190         /*
1191          * The worker might have been waiting for the mutex, let it run and
1192          * discover that its list is now empty.
1193          */
1194         cancel_work_sync(&mvm->async_handlers_wk);
1195 }
1196
1197 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1198 {
1199         u16 i;
1200
1201         lockdep_assert_held(&mvm->mutex);
1202
1203         for (i = 0; i < NUM_PHY_CTX; i++)
1204                 if (!mvm->phy_ctxts[i].ref)
1205                         return &mvm->phy_ctxts[i];
1206
1207         IWL_ERR(mvm, "No available PHY context\n");
1208         return NULL;
1209 }
1210
1211 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1212                                 s16 tx_power)
1213 {
1214         struct iwl_dev_tx_power_cmd cmd = {
1215                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1216                 .v2.mac_context_id =
1217                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1218                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1219         };
1220         int len = sizeof(cmd);
1221
1222         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1223                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1224
1225         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1226                 len = sizeof(cmd.v2);
1227
1228         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1229 }
1230
1231 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1232                                      struct ieee80211_vif *vif)
1233 {
1234         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1235         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1236         int ret;
1237
1238         mvmvif->mvm = mvm;
1239
1240         /*
1241          * make sure D0i3 exit is completed, otherwise a target access
1242          * during tx queue configuration could be done when still in
1243          * D0i3 state.
1244          */
1245         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1246         if (ret)
1247                 return ret;
1248
1249         /*
1250          * Not much to do here. The stack will not allow interface
1251          * types or combinations that we didn't advertise, so we
1252          * don't really have to check the types.
1253          */
1254
1255         mutex_lock(&mvm->mutex);
1256
1257         /* make sure that beacon statistics don't go backwards with FW reset */
1258         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1259                 mvmvif->beacon_stats.accu_num_beacons +=
1260                         mvmvif->beacon_stats.num_beacons;
1261
1262         /* Allocate resources for the MAC context, and add it to the fw  */
1263         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1264         if (ret)
1265                 goto out_unlock;
1266
1267         /* Counting number of interfaces is needed for legacy PM */
1268         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1269                 mvm->vif_count++;
1270
1271         /*
1272          * The AP binding flow can be done only after the beacon
1273          * template is configured (which happens only in the mac80211
1274          * start_ap() flow), and adding the broadcast station can happen
1275          * only after the binding.
1276          * In addition, since modifying the MAC before adding a bcast
1277          * station is not allowed by the FW, delay the adding of MAC context to
1278          * the point where we can also add the bcast station.
1279          * In short: there's not much we can do at this point, other than
1280          * allocating resources :)
1281          */
1282         if (vif->type == NL80211_IFTYPE_AP ||
1283             vif->type == NL80211_IFTYPE_ADHOC) {
1284                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1285                 if (ret) {
1286                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1287                         goto out_release;
1288                 }
1289
1290                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1291                 goto out_unlock;
1292         }
1293
1294         mvmvif->features |= hw->netdev_features;
1295
1296         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1297         if (ret)
1298                 goto out_release;
1299
1300         ret = iwl_mvm_power_update_mac(mvm);
1301         if (ret)
1302                 goto out_remove_mac;
1303
1304         /* beacon filtering */
1305         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1306         if (ret)
1307                 goto out_remove_mac;
1308
1309         if (!mvm->bf_allowed_vif &&
1310             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1311                 mvm->bf_allowed_vif = mvmvif;
1312                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1313                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1314         }
1315
1316         /*
1317          * P2P_DEVICE interface does not have a channel context assigned to it,
1318          * so a dedicated PHY context is allocated to it and the corresponding
1319          * MAC context is bound to it at this stage.
1320          */
1321         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1322
1323                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1324                 if (!mvmvif->phy_ctxt) {
1325                         ret = -ENOSPC;
1326                         goto out_free_bf;
1327                 }
1328
1329                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1330                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1331                 if (ret)
1332                         goto out_unref_phy;
1333
1334                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1335                 if (ret)
1336                         goto out_unbind;
1337
1338                 /* Save a pointer to p2p device vif, so it can later be used to
1339                  * update the p2p device MAC when a GO is started/stopped */
1340                 mvm->p2p_device_vif = vif;
1341         }
1342
1343         iwl_mvm_vif_dbgfs_register(mvm, vif);
1344         goto out_unlock;
1345
1346  out_unbind:
1347         iwl_mvm_binding_remove_vif(mvm, vif);
1348  out_unref_phy:
1349         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1350  out_free_bf:
1351         if (mvm->bf_allowed_vif == mvmvif) {
1352                 mvm->bf_allowed_vif = NULL;
1353                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1354                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1355         }
1356  out_remove_mac:
1357         mvmvif->phy_ctxt = NULL;
1358         iwl_mvm_mac_ctxt_remove(mvm, vif);
1359  out_release:
1360         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1361                 mvm->vif_count--;
1362
1363         iwl_mvm_mac_ctxt_release(mvm, vif);
1364  out_unlock:
1365         mutex_unlock(&mvm->mutex);
1366
1367         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1368
1369         return ret;
1370 }
1371
1372 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1373                                         struct ieee80211_vif *vif)
1374 {
1375         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1376
1377         if (tfd_msk) {
1378                 /*
1379                  * mac80211 first removes all the stations of the vif and
1380                  * then removes the vif. When it removes a station it also
1381                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1382                  * of all the stations of this vif are closed, and the queues
1383                  * of these AMPDU sessions are properly closed.
1384                  * We still need to take care of the shared queues of the vif.
1385                  * Flush them here.
1386                  */
1387                 mutex_lock(&mvm->mutex);
1388                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1389                 mutex_unlock(&mvm->mutex);
1390
1391                 /*
1392                  * There are transports that buffer a few frames in the host.
1393                  * For these, the flush above isn't enough since while we were
1394                  * flushing, the transport might have sent more frames to the
1395                  * device. To solve this, wait here until the transport is
1396                  * empty. Technically, this could have replaced the flush
1397                  * above, but flush is much faster than draining. So flush
1398                  * first, and drain to make sure we have no frames in the
1399                  * transport anymore.
1400                  * If a station still had frames on the shared queues, it is
1401                  * already marked as draining, so to complete the draining, we
1402                  * just need to wait until the transport is empty.
1403                  */
1404                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1405         }
1406
1407         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1408                 /*
1409                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1410                  * We assume here that all the packets sent to the OFFCHANNEL
1411                  * queue are sent in ROC session.
1412                  */
1413                 flush_work(&mvm->roc_done_wk);
1414         } else {
1415                 /*
1416                  * By now, all the AC queues are empty. The AGG queues are
1417                  * empty too. We already got all the Tx responses for all the
1418                  * packets in the queues. The drain work can have been
1419                  * triggered. Flush it.
1420                  */
1421                 flush_work(&mvm->sta_drained_wk);
1422         }
1423 }
1424
1425 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1426                                          struct ieee80211_vif *vif)
1427 {
1428         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1429         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1430
1431         iwl_mvm_prepare_mac_removal(mvm, vif);
1432
1433         mutex_lock(&mvm->mutex);
1434
1435         if (mvm->bf_allowed_vif == mvmvif) {
1436                 mvm->bf_allowed_vif = NULL;
1437                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1438                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1439         }
1440
1441         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1442
1443         /*
1444          * For AP/GO interface, the tear down of the resources allocated to the
1445          * interface is be handled as part of the stop_ap flow.
1446          */
1447         if (vif->type == NL80211_IFTYPE_AP ||
1448             vif->type == NL80211_IFTYPE_ADHOC) {
1449 #ifdef CONFIG_NL80211_TESTMODE
1450                 if (vif == mvm->noa_vif) {
1451                         mvm->noa_vif = NULL;
1452                         mvm->noa_duration = 0;
1453                 }
1454 #endif
1455                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1456                 goto out_release;
1457         }
1458
1459         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1460                 mvm->p2p_device_vif = NULL;
1461                 iwl_mvm_rm_bcast_sta(mvm, vif);
1462                 iwl_mvm_binding_remove_vif(mvm, vif);
1463                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1464                 mvmvif->phy_ctxt = NULL;
1465         }
1466
1467         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1468                 mvm->vif_count--;
1469
1470         iwl_mvm_power_update_mac(mvm);
1471         iwl_mvm_mac_ctxt_remove(mvm, vif);
1472
1473 out_release:
1474         iwl_mvm_mac_ctxt_release(mvm, vif);
1475         mutex_unlock(&mvm->mutex);
1476 }
1477
1478 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1479 {
1480         return 0;
1481 }
1482
1483 struct iwl_mvm_mc_iter_data {
1484         struct iwl_mvm *mvm;
1485         int port_id;
1486 };
1487
1488 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1489                                       struct ieee80211_vif *vif)
1490 {
1491         struct iwl_mvm_mc_iter_data *data = _data;
1492         struct iwl_mvm *mvm = data->mvm;
1493         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1494         int ret, len;
1495
1496         /* if we don't have free ports, mcast frames will be dropped */
1497         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1498                 return;
1499
1500         if (vif->type != NL80211_IFTYPE_STATION ||
1501             !vif->bss_conf.assoc)
1502                 return;
1503
1504         cmd->port_id = data->port_id++;
1505         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1506         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1507
1508         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1509         if (ret)
1510                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1511 }
1512
1513 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1514 {
1515         struct iwl_mvm_mc_iter_data iter_data = {
1516                 .mvm = mvm,
1517         };
1518
1519         lockdep_assert_held(&mvm->mutex);
1520
1521         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1522                 return;
1523
1524         ieee80211_iterate_active_interfaces_atomic(
1525                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1526                 iwl_mvm_mc_iface_iterator, &iter_data);
1527 }
1528
1529 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1530                                      struct netdev_hw_addr_list *mc_list)
1531 {
1532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1533         struct iwl_mcast_filter_cmd *cmd;
1534         struct netdev_hw_addr *addr;
1535         int addr_count;
1536         bool pass_all;
1537         int len;
1538
1539         addr_count = netdev_hw_addr_list_count(mc_list);
1540         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1541                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1542         if (pass_all)
1543                 addr_count = 0;
1544
1545         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1546         cmd = kzalloc(len, GFP_ATOMIC);
1547         if (!cmd)
1548                 return 0;
1549
1550         if (pass_all) {
1551                 cmd->pass_all = 1;
1552                 return (u64)(unsigned long)cmd;
1553         }
1554
1555         netdev_hw_addr_list_for_each(addr, mc_list) {
1556                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1557                                    cmd->count, addr->addr);
1558                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1559                        addr->addr, ETH_ALEN);
1560                 cmd->count++;
1561         }
1562
1563         return (u64)(unsigned long)cmd;
1564 }
1565
1566 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1567                                      unsigned int changed_flags,
1568                                      unsigned int *total_flags,
1569                                      u64 multicast)
1570 {
1571         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1572         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1573
1574         mutex_lock(&mvm->mutex);
1575
1576         /* replace previous configuration */
1577         kfree(mvm->mcast_filter_cmd);
1578         mvm->mcast_filter_cmd = cmd;
1579
1580         if (!cmd)
1581                 goto out;
1582
1583         iwl_mvm_recalc_multicast(mvm);
1584 out:
1585         mutex_unlock(&mvm->mutex);
1586         *total_flags = 0;
1587 }
1588
1589 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1590                                         struct ieee80211_vif *vif,
1591                                         unsigned int filter_flags,
1592                                         unsigned int changed_flags)
1593 {
1594         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1595
1596         /* We support only filter for probe requests */
1597         if (!(changed_flags & FIF_PROBE_REQ))
1598                 return;
1599
1600         /* Supported only for p2p client interfaces */
1601         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1602             !vif->p2p)
1603                 return;
1604
1605         mutex_lock(&mvm->mutex);
1606         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1607         mutex_unlock(&mvm->mutex);
1608 }
1609
1610 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1611 struct iwl_bcast_iter_data {
1612         struct iwl_mvm *mvm;
1613         struct iwl_bcast_filter_cmd *cmd;
1614         u8 current_filter;
1615 };
1616
1617 static void
1618 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1619                          const struct iwl_fw_bcast_filter *in_filter,
1620                          struct iwl_fw_bcast_filter *out_filter)
1621 {
1622         struct iwl_fw_bcast_filter_attr *attr;
1623         int i;
1624
1625         memcpy(out_filter, in_filter, sizeof(*out_filter));
1626
1627         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1628                 attr = &out_filter->attrs[i];
1629
1630                 if (!attr->mask)
1631                         break;
1632
1633                 switch (attr->reserved1) {
1634                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1635                         if (vif->bss_conf.arp_addr_cnt != 1) {
1636                                 attr->mask = 0;
1637                                 continue;
1638                         }
1639
1640                         attr->val = vif->bss_conf.arp_addr_list[0];
1641                         break;
1642                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1643                         attr->val = *(__be32 *)&vif->addr[2];
1644                         break;
1645                 default:
1646                         break;
1647                 }
1648                 attr->reserved1 = 0;
1649                 out_filter->num_attrs++;
1650         }
1651 }
1652
1653 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1654                                           struct ieee80211_vif *vif)
1655 {
1656         struct iwl_bcast_iter_data *data = _data;
1657         struct iwl_mvm *mvm = data->mvm;
1658         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1659         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1660         struct iwl_fw_bcast_mac *bcast_mac;
1661         int i;
1662
1663         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1664                 return;
1665
1666         bcast_mac = &cmd->macs[mvmvif->id];
1667
1668         /*
1669          * enable filtering only for associated stations, but not for P2P
1670          * Clients
1671          */
1672         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1673             !vif->bss_conf.assoc)
1674                 return;
1675
1676         bcast_mac->default_discard = 1;
1677
1678         /* copy all configured filters */
1679         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1680                 /*
1681                  * Make sure we don't exceed our filters limit.
1682                  * if there is still a valid filter to be configured,
1683                  * be on the safe side and just allow bcast for this mac.
1684                  */
1685                 if (WARN_ON_ONCE(data->current_filter >=
1686                                  ARRAY_SIZE(cmd->filters))) {
1687                         bcast_mac->default_discard = 0;
1688                         bcast_mac->attached_filters = 0;
1689                         break;
1690                 }
1691
1692                 iwl_mvm_set_bcast_filter(vif,
1693                                          &mvm->bcast_filters[i],
1694                                          &cmd->filters[data->current_filter]);
1695
1696                 /* skip current filter if it contains no attributes */
1697                 if (!cmd->filters[data->current_filter].num_attrs)
1698                         continue;
1699
1700                 /* attach the filter to current mac */
1701                 bcast_mac->attached_filters |=
1702                                 cpu_to_le16(BIT(data->current_filter));
1703
1704                 data->current_filter++;
1705         }
1706 }
1707
1708 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1709                                     struct iwl_bcast_filter_cmd *cmd)
1710 {
1711         struct iwl_bcast_iter_data iter_data = {
1712                 .mvm = mvm,
1713                 .cmd = cmd,
1714         };
1715
1716         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1717                 return false;
1718
1719         memset(cmd, 0, sizeof(*cmd));
1720         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1721         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1722
1723 #ifdef CONFIG_IWLWIFI_DEBUGFS
1724         /* use debugfs filters/macs if override is configured */
1725         if (mvm->dbgfs_bcast_filtering.override) {
1726                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1727                        sizeof(cmd->filters));
1728                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1729                        sizeof(cmd->macs));
1730                 return true;
1731         }
1732 #endif
1733
1734         /* if no filters are configured, do nothing */
1735         if (!mvm->bcast_filters)
1736                 return false;
1737
1738         /* configure and attach these filters for each associated sta vif */
1739         ieee80211_iterate_active_interfaces(
1740                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1741                 iwl_mvm_bcast_filter_iterator, &iter_data);
1742
1743         return true;
1744 }
1745
1746 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1747 {
1748         struct iwl_bcast_filter_cmd cmd;
1749
1750         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1751                 return 0;
1752
1753         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1754                 return 0;
1755
1756         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1757                                     sizeof(cmd), &cmd);
1758 }
1759 #else
1760 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1761 {
1762         return 0;
1763 }
1764 #endif
1765
1766 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1767                                     struct ieee80211_vif *vif)
1768 {
1769         struct iwl_mu_group_mgmt_cmd cmd = {};
1770
1771         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1772                WLAN_MEMBERSHIP_LEN);
1773         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1774                WLAN_USER_POSITION_LEN);
1775
1776         return iwl_mvm_send_cmd_pdu(mvm,
1777                                     WIDE_ID(DATA_PATH_GROUP,
1778                                             UPDATE_MU_GROUPS_CMD),
1779                                     0, sizeof(cmd), &cmd);
1780 }
1781
1782 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1783                                            struct ieee80211_vif *vif)
1784 {
1785         if (vif->mu_mimo_owner) {
1786                 struct iwl_mu_group_mgmt_notif *notif = _data;
1787
1788                 /*
1789                  * MU-MIMO Group Id action frame is little endian. We treat
1790                  * the data received from firmware as if it came from the
1791                  * action frame, so no conversion is needed.
1792                  */
1793                 ieee80211_update_mu_groups(vif,
1794                                            (u8 *)&notif->membership_status,
1795                                            (u8 *)&notif->user_position);
1796         }
1797 }
1798
1799 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1800                                struct iwl_rx_cmd_buffer *rxb)
1801 {
1802         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1803         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1804
1805         ieee80211_iterate_active_interfaces_atomic(
1806                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1807                         iwl_mvm_mu_mimo_iface_iterator, notif);
1808 }
1809
1810 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1811                                              struct ieee80211_vif *vif,
1812                                              struct ieee80211_bss_conf *bss_conf,
1813                                              u32 changes)
1814 {
1815         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1816         int ret;
1817
1818         /*
1819          * Re-calculate the tsf id, as the master-slave relations depend on the
1820          * beacon interval, which was not known when the station interface was
1821          * added.
1822          */
1823         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1824                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1825
1826         /*
1827          * If we're not associated yet, take the (new) BSSID before associating
1828          * so the firmware knows. If we're already associated, then use the old
1829          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1830          * branch for disassociation below.
1831          */
1832         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1833                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1834
1835         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1836         if (ret)
1837                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1838
1839         /* after sending it once, adopt mac80211 data */
1840         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1841         mvmvif->associated = bss_conf->assoc;
1842
1843         if (changes & BSS_CHANGED_ASSOC) {
1844                 if (bss_conf->assoc) {
1845                         /* clear statistics to get clean beacon counter */
1846                         iwl_mvm_request_statistics(mvm, true);
1847                         memset(&mvmvif->beacon_stats, 0,
1848                                sizeof(mvmvif->beacon_stats));
1849
1850                         /* add quota for this interface */
1851                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1852                         if (ret) {
1853                                 IWL_ERR(mvm, "failed to update quotas\n");
1854                                 return;
1855                         }
1856
1857                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1858                                      &mvm->status)) {
1859                                 /*
1860                                  * If we're restarting then the firmware will
1861                                  * obviously have lost synchronisation with
1862                                  * the AP. It will attempt to synchronise by
1863                                  * itself, but we can make it more reliable by
1864                                  * scheduling a session protection time event.
1865                                  *
1866                                  * The firmware needs to receive a beacon to
1867                                  * catch up with synchronisation, use 110% of
1868                                  * the beacon interval.
1869                                  *
1870                                  * Set a large maximum delay to allow for more
1871                                  * than a single interface.
1872                                  */
1873                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1874                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1875                                                         5 * dur, false);
1876                         }
1877
1878                         iwl_mvm_sf_update(mvm, vif, false);
1879                         iwl_mvm_power_vif_assoc(mvm, vif);
1880                         if (vif->p2p) {
1881                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1882                                 iwl_mvm_update_smps(mvm, vif,
1883                                                     IWL_MVM_SMPS_REQ_PROT,
1884                                                     IEEE80211_SMPS_DYNAMIC);
1885                         }
1886                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1887                         /*
1888                          * If update fails - SF might be running in associated
1889                          * mode while disassociated - which is forbidden.
1890                          */
1891                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1892                                   "Failed to update SF upon disassociation\n");
1893
1894                         /* remove AP station now that the MAC is unassoc */
1895                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1896                         if (ret)
1897                                 IWL_ERR(mvm, "failed to remove AP station\n");
1898
1899                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1900                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1901                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1902                         /* remove quota for this interface */
1903                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1904                         if (ret)
1905                                 IWL_ERR(mvm, "failed to update quotas\n");
1906
1907                         if (vif->p2p)
1908                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1909
1910                         /* this will take the cleared BSSID from bss_conf */
1911                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1912                         if (ret)
1913                                 IWL_ERR(mvm,
1914                                         "failed to update MAC %pM (clear after unassoc)\n",
1915                                         vif->addr);
1916                 }
1917
1918                 /*
1919                  * The firmware tracks the MU-MIMO group on its own.
1920                  * However, on HW restart we should restore this data.
1921                  */
1922                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1923                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1924                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1925                         if (ret)
1926                                 IWL_ERR(mvm,
1927                                         "failed to update VHT MU_MIMO groups\n");
1928                 }
1929
1930                 iwl_mvm_recalc_multicast(mvm);
1931                 iwl_mvm_configure_bcast_filter(mvm);
1932
1933                 /* reset rssi values */
1934                 mvmvif->bf_data.ave_beacon_signal = 0;
1935
1936                 iwl_mvm_bt_coex_vif_change(mvm);
1937                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1938                                     IEEE80211_SMPS_AUTOMATIC);
1939                 if (fw_has_capa(&mvm->fw->ucode_capa,
1940                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1941                         iwl_mvm_config_scan(mvm);
1942         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1943                 /*
1944                  * We received a beacon _after_ association so
1945                  * remove the session protection.
1946                  */
1947                 iwl_mvm_remove_time_event(mvm, mvmvif,
1948                                           &mvmvif->time_event_data);
1949         }
1950
1951         if (changes & BSS_CHANGED_BEACON_INFO) {
1952                 iwl_mvm_sf_update(mvm, vif, false);
1953                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1954         }
1955
1956         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1957                        /*
1958                         * Send power command on every beacon change,
1959                         * because we may have not enabled beacon abort yet.
1960                         */
1961                        BSS_CHANGED_BEACON_INFO)) {
1962                 ret = iwl_mvm_power_update_mac(mvm);
1963                 if (ret)
1964                         IWL_ERR(mvm, "failed to update power mode\n");
1965         }
1966
1967         if (changes & BSS_CHANGED_TXPOWER) {
1968                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1969                                 bss_conf->txpower);
1970                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1971         }
1972
1973         if (changes & BSS_CHANGED_CQM) {
1974                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1975                 /* reset cqm events tracking */
1976                 mvmvif->bf_data.last_cqm_event = 0;
1977                 if (mvmvif->bf_data.bf_enabled) {
1978                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1979                         if (ret)
1980                                 IWL_ERR(mvm,
1981                                         "failed to update CQM thresholds\n");
1982                 }
1983         }
1984
1985         if (changes & BSS_CHANGED_ARP_FILTER) {
1986                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1987                 iwl_mvm_configure_bcast_filter(mvm);
1988         }
1989 }
1990
1991 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1992                                  struct ieee80211_vif *vif)
1993 {
1994         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1995         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1996         int ret;
1997
1998         /*
1999          * iwl_mvm_mac_ctxt_add() might read directly from the device
2000          * (the system time), so make sure it is available.
2001          */
2002         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2003         if (ret)
2004                 return ret;
2005
2006         mutex_lock(&mvm->mutex);
2007
2008         /* Send the beacon template */
2009         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2010         if (ret)
2011                 goto out_unlock;
2012
2013         /*
2014          * Re-calculate the tsf id, as the master-slave relations depend on the
2015          * beacon interval, which was not known when the AP interface was added.
2016          */
2017         if (vif->type == NL80211_IFTYPE_AP)
2018                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2019
2020         mvmvif->ap_assoc_sta_count = 0;
2021
2022         /* Add the mac context */
2023         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2024         if (ret)
2025                 goto out_unlock;
2026
2027         /* Perform the binding */
2028         ret = iwl_mvm_binding_add_vif(mvm, vif);
2029         if (ret)
2030                 goto out_remove;
2031
2032         /* Send the bcast station. At this stage the TBTT and DTIM time events
2033          * are added and applied to the scheduler */
2034         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2035         if (ret)
2036                 goto out_unbind;
2037
2038         /* must be set before quota calculations */
2039         mvmvif->ap_ibss_active = true;
2040
2041         /* power updated needs to be done before quotas */
2042         iwl_mvm_power_update_mac(mvm);
2043
2044         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2045         if (ret)
2046                 goto out_quota_failed;
2047
2048         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2049         if (vif->p2p && mvm->p2p_device_vif)
2050                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2051
2052         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2053
2054         iwl_mvm_bt_coex_vif_change(mvm);
2055
2056         /* we don't support TDLS during DCM */
2057         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2058                 iwl_mvm_teardown_tdls_peers(mvm);
2059
2060         goto out_unlock;
2061
2062 out_quota_failed:
2063         iwl_mvm_power_update_mac(mvm);
2064         mvmvif->ap_ibss_active = false;
2065         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2066 out_unbind:
2067         iwl_mvm_binding_remove_vif(mvm, vif);
2068 out_remove:
2069         iwl_mvm_mac_ctxt_remove(mvm, vif);
2070 out_unlock:
2071         mutex_unlock(&mvm->mutex);
2072         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2073         return ret;
2074 }
2075
2076 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2077                                  struct ieee80211_vif *vif)
2078 {
2079         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2080         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2081
2082         iwl_mvm_prepare_mac_removal(mvm, vif);
2083
2084         mutex_lock(&mvm->mutex);
2085
2086         /* Handle AP stop while in CSA */
2087         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2088                 iwl_mvm_remove_time_event(mvm, mvmvif,
2089                                           &mvmvif->time_event_data);
2090                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2091                 mvmvif->csa_countdown = false;
2092         }
2093
2094         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2095                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2096                 mvm->csa_tx_block_bcn_timeout = 0;
2097         }
2098
2099         mvmvif->ap_ibss_active = false;
2100         mvm->ap_last_beacon_gp2 = 0;
2101
2102         iwl_mvm_bt_coex_vif_change(mvm);
2103
2104         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2105
2106         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2107         if (vif->p2p && mvm->p2p_device_vif)
2108                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2109
2110         iwl_mvm_update_quotas(mvm, false, NULL);
2111         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2112         iwl_mvm_binding_remove_vif(mvm, vif);
2113
2114         iwl_mvm_power_update_mac(mvm);
2115
2116         iwl_mvm_mac_ctxt_remove(mvm, vif);
2117
2118         mutex_unlock(&mvm->mutex);
2119 }
2120
2121 static void
2122 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2123                                  struct ieee80211_vif *vif,
2124                                  struct ieee80211_bss_conf *bss_conf,
2125                                  u32 changes)
2126 {
2127         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2128
2129         /* Changes will be applied when the AP/IBSS is started */
2130         if (!mvmvif->ap_ibss_active)
2131                 return;
2132
2133         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2134                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2135             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2136                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2137
2138         /* Need to send a new beacon template to the FW */
2139         if (changes & BSS_CHANGED_BEACON &&
2140             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2141                 IWL_WARN(mvm, "Failed updating beacon data\n");
2142
2143         if (changes & BSS_CHANGED_TXPOWER) {
2144                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2145                                 bss_conf->txpower);
2146                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2147         }
2148 }
2149
2150 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2151                                      struct ieee80211_vif *vif,
2152                                      struct ieee80211_bss_conf *bss_conf,
2153                                      u32 changes)
2154 {
2155         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2156
2157         /*
2158          * iwl_mvm_bss_info_changed_station() might call
2159          * iwl_mvm_protect_session(), which reads directly from
2160          * the device (the system time), so make sure it is available.
2161          */
2162         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2163                 return;
2164
2165         mutex_lock(&mvm->mutex);
2166
2167         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2168                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2169
2170         switch (vif->type) {
2171         case NL80211_IFTYPE_STATION:
2172                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2173                 break;
2174         case NL80211_IFTYPE_AP:
2175         case NL80211_IFTYPE_ADHOC:
2176                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2177                 break;
2178         default:
2179                 /* shouldn't happen */
2180                 WARN_ON_ONCE(1);
2181         }
2182
2183         mutex_unlock(&mvm->mutex);
2184         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2185 }
2186
2187 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2188                                struct ieee80211_vif *vif,
2189                                struct ieee80211_scan_request *hw_req)
2190 {
2191         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2192         int ret;
2193
2194         if (hw_req->req.n_channels == 0 ||
2195             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2196                 return -EINVAL;
2197
2198         mutex_lock(&mvm->mutex);
2199         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2200         mutex_unlock(&mvm->mutex);
2201
2202         return ret;
2203 }
2204
2205 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2206                                        struct ieee80211_vif *vif)
2207 {
2208         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2209
2210         mutex_lock(&mvm->mutex);
2211
2212         /* Due to a race condition, it's possible that mac80211 asks
2213          * us to stop a hw_scan when it's already stopped.  This can
2214          * happen, for instance, if we stopped the scan ourselves,
2215          * called ieee80211_scan_completed() and the userspace called
2216          * cancel scan scan before ieee80211_scan_work() could run.
2217          * To handle that, simply return if the scan is not running.
2218         */
2219         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2220                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2221
2222         mutex_unlock(&mvm->mutex);
2223 }
2224
2225 static void
2226 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2227                                   struct ieee80211_sta *sta, u16 tids,
2228                                   int num_frames,
2229                                   enum ieee80211_frame_release_type reason,
2230                                   bool more_data)
2231 {
2232         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2233
2234         /* Called when we need to transmit (a) frame(s) from mac80211 */
2235
2236         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2237                                           tids, more_data, false);
2238 }
2239
2240 static void
2241 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2242                                     struct ieee80211_sta *sta, u16 tids,
2243                                     int num_frames,
2244                                     enum ieee80211_frame_release_type reason,
2245                                     bool more_data)
2246 {
2247         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2248
2249         /* Called when we need to transmit (a) frame(s) from agg queue */
2250
2251         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2252                                           tids, more_data, true);
2253 }
2254
2255 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2256                                    struct ieee80211_vif *vif,
2257                                    enum sta_notify_cmd cmd,
2258                                    struct ieee80211_sta *sta)
2259 {
2260         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2261         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2262         unsigned long txqs = 0, tids = 0;
2263         int tid;
2264
2265         spin_lock_bh(&mvmsta->lock);
2266         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2267                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2268
2269                 if (tid_data->state != IWL_AGG_ON &&
2270                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2271                         continue;
2272
2273                 __set_bit(tid_data->txq_id, &txqs);
2274
2275                 if (iwl_mvm_tid_queued(tid_data) == 0)
2276                         continue;
2277
2278                 __set_bit(tid, &tids);
2279         }
2280
2281         switch (cmd) {
2282         case STA_NOTIFY_SLEEP:
2283                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2284                         ieee80211_sta_block_awake(hw, sta, true);
2285
2286                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2287                         ieee80211_sta_set_buffered(sta, tid, true);
2288
2289                 if (txqs)
2290                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2291                 /*
2292                  * The fw updates the STA to be asleep. Tx packets on the Tx
2293                  * queues to this station will not be transmitted. The fw will
2294                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2295                  */
2296                 break;
2297         case STA_NOTIFY_AWAKE:
2298                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2299                         break;
2300
2301                 if (txqs)
2302                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2303                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2304                 break;
2305         default:
2306                 break;
2307         }
2308         spin_unlock_bh(&mvmsta->lock);
2309 }
2310
2311 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2312                                        struct ieee80211_vif *vif,
2313                                        struct ieee80211_sta *sta)
2314 {
2315         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2316         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2317
2318         /*
2319          * This is called before mac80211 does RCU synchronisation,
2320          * so here we already invalidate our internal RCU-protected
2321          * station pointer. The rest of the code will thus no longer
2322          * be able to find the station this way, and we don't rely
2323          * on further RCU synchronisation after the sta_state()
2324          * callback deleted the station.
2325          */
2326         mutex_lock(&mvm->mutex);
2327         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2328                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2329                                    ERR_PTR(-ENOENT));
2330
2331         mutex_unlock(&mvm->mutex);
2332 }
2333
2334 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2335                                 const u8 *bssid)
2336 {
2337         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2338                 return;
2339
2340         if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2341                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2342                 return;
2343         }
2344
2345         if (iwlwifi_mod_params.uapsd_disable) {
2346                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2347                 return;
2348         }
2349
2350         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2351 }
2352
2353 static void
2354 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2355                            struct ieee80211_vif *vif, u8 *peer_addr,
2356                            enum nl80211_tdls_operation action)
2357 {
2358         struct iwl_fw_dbg_trigger_tlv *trig;
2359         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2360
2361         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2362                 return;
2363
2364         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2365         tdls_trig = (void *)trig->data;
2366         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2367                 return;
2368
2369         if (!(tdls_trig->action_bitmap & BIT(action)))
2370                 return;
2371
2372         if (tdls_trig->peer_mode &&
2373             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2374                 return;
2375
2376         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2377                                     "TDLS event occurred, peer %pM, action %d",
2378                                     peer_addr, action);
2379 }
2380
2381 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2382                                  struct ieee80211_vif *vif,
2383                                  struct ieee80211_sta *sta,
2384                                  enum ieee80211_sta_state old_state,
2385                                  enum ieee80211_sta_state new_state)
2386 {
2387         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2388         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2389         int ret;
2390
2391         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2392                            sta->addr, old_state, new_state);
2393
2394         /* this would be a mac80211 bug ... but don't crash */
2395         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2396                 return -EINVAL;
2397
2398         /* if a STA is being removed, reuse its ID */
2399         flush_work(&mvm->sta_drained_wk);
2400
2401         mutex_lock(&mvm->mutex);
2402         if (old_state == IEEE80211_STA_NOTEXIST &&
2403             new_state == IEEE80211_STA_NONE) {
2404                 /*
2405                  * Firmware bug - it'll crash if the beacon interval is less
2406                  * than 16. We can't avoid connecting at all, so refuse the
2407                  * station state change, this will cause mac80211 to abandon
2408                  * attempts to connect to this AP, and eventually wpa_s will
2409                  * blacklist the AP...
2410                  */
2411                 if (vif->type == NL80211_IFTYPE_STATION &&
2412                     vif->bss_conf.beacon_int < 16) {
2413                         IWL_ERR(mvm,
2414                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2415                                 sta->addr, vif->bss_conf.beacon_int);
2416                         ret = -EINVAL;
2417                         goto out_unlock;
2418                 }
2419
2420                 if (sta->tdls &&
2421                     (vif->p2p ||
2422                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2423                                                 IWL_MVM_TDLS_STA_COUNT ||
2424                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2425                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2426                         ret = -EBUSY;
2427                         goto out_unlock;
2428                 }
2429
2430                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2431                 if (sta->tdls && ret == 0) {
2432                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2433                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2434                                                    NL80211_TDLS_SETUP);
2435                 }
2436         } else if (old_state == IEEE80211_STA_NONE &&
2437                    new_state == IEEE80211_STA_AUTH) {
2438                 /*
2439                  * EBS may be disabled due to previous failures reported by FW.
2440                  * Reset EBS status here assuming environment has been changed.
2441                  */
2442                 mvm->last_ebs_successful = true;
2443                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2444                 ret = 0;
2445         } else if (old_state == IEEE80211_STA_AUTH &&
2446                    new_state == IEEE80211_STA_ASSOC) {
2447                 if (vif->type == NL80211_IFTYPE_AP) {
2448                         mvmvif->ap_assoc_sta_count++;
2449                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2450                 }
2451                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2452                 if (ret == 0)
2453                         iwl_mvm_rs_rate_init(mvm, sta,
2454                                              mvmvif->phy_ctxt->channel->band,
2455                                              true);
2456         } else if (old_state == IEEE80211_STA_ASSOC &&
2457                    new_state == IEEE80211_STA_AUTHORIZED) {
2458
2459                 /* we don't support TDLS during DCM */
2460                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2461                         iwl_mvm_teardown_tdls_peers(mvm);
2462
2463                 if (sta->tdls)
2464                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2465                                                    NL80211_TDLS_ENABLE_LINK);
2466
2467                 /* enable beacon filtering */
2468                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2469                 ret = 0;
2470         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2471                    new_state == IEEE80211_STA_ASSOC) {
2472                 /* disable beacon filtering */
2473                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2474                 ret = 0;
2475         } else if (old_state == IEEE80211_STA_ASSOC &&
2476                    new_state == IEEE80211_STA_AUTH) {
2477                 if (vif->type == NL80211_IFTYPE_AP) {
2478                         mvmvif->ap_assoc_sta_count--;
2479                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2480                 }
2481                 ret = 0;
2482         } else if (old_state == IEEE80211_STA_AUTH &&
2483                    new_state == IEEE80211_STA_NONE) {
2484                 ret = 0;
2485         } else if (old_state == IEEE80211_STA_NONE &&
2486                    new_state == IEEE80211_STA_NOTEXIST) {
2487                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2488                 if (sta->tdls) {
2489                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2490                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2491                                                    NL80211_TDLS_DISABLE_LINK);
2492                 }
2493         } else {
2494                 ret = -EIO;
2495         }
2496  out_unlock:
2497         mutex_unlock(&mvm->mutex);
2498
2499         if (sta->tdls && ret == 0) {
2500                 if (old_state == IEEE80211_STA_NOTEXIST &&
2501                     new_state == IEEE80211_STA_NONE)
2502                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2503                 else if (old_state == IEEE80211_STA_NONE &&
2504                          new_state == IEEE80211_STA_NOTEXIST)
2505                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2506         }
2507
2508         return ret;
2509 }
2510
2511 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2512 {
2513         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2514
2515         mvm->rts_threshold = value;
2516
2517         return 0;
2518 }
2519
2520 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2521                                   struct ieee80211_vif *vif,
2522                                   struct ieee80211_sta *sta, u32 changed)
2523 {
2524         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2525
2526         if (vif->type == NL80211_IFTYPE_STATION &&
2527             changed & IEEE80211_RC_NSS_CHANGED)
2528                 iwl_mvm_sf_update(mvm, vif, false);
2529 }
2530
2531 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2532                                struct ieee80211_vif *vif, u16 ac,
2533                                const struct ieee80211_tx_queue_params *params)
2534 {
2535         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2536         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2537
2538         mvmvif->queue_params[ac] = *params;
2539
2540         /*
2541          * No need to update right away, we'll get BSS_CHANGED_QOS
2542          * The exception is P2P_DEVICE interface which needs immediate update.
2543          */
2544         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2545                 int ret;
2546
2547                 mutex_lock(&mvm->mutex);
2548                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2549                 mutex_unlock(&mvm->mutex);
2550                 return ret;
2551         }
2552         return 0;
2553 }
2554
2555 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2556                                       struct ieee80211_vif *vif)
2557 {
2558         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2559         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2560         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2561
2562         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2563                 return;
2564
2565         /*
2566          * iwl_mvm_protect_session() reads directly from the device
2567          * (the system time), so make sure it is available.
2568          */
2569         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2570                 return;
2571
2572         mutex_lock(&mvm->mutex);
2573         /* Try really hard to protect the session and hear a beacon */
2574         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2575         mutex_unlock(&mvm->mutex);
2576
2577         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2578 }
2579
2580 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2581                                         struct ieee80211_vif *vif,
2582                                         struct cfg80211_sched_scan_request *req,
2583                                         struct ieee80211_scan_ies *ies)
2584 {
2585         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2586
2587         int ret;
2588
2589         mutex_lock(&mvm->mutex);
2590
2591         if (!vif->bss_conf.idle) {
2592                 ret = -EBUSY;
2593                 goto out;
2594         }
2595
2596         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2597
2598 out:
2599         mutex_unlock(&mvm->mutex);
2600         return ret;
2601 }
2602
2603 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2604                                        struct ieee80211_vif *vif)
2605 {
2606         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2607         int ret;
2608
2609         mutex_lock(&mvm->mutex);
2610
2611         /* Due to a race condition, it's possible that mac80211 asks
2612          * us to stop a sched_scan when it's already stopped.  This
2613          * can happen, for instance, if we stopped the scan ourselves,
2614          * called ieee80211_sched_scan_stopped() and the userspace called
2615          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2616          * could run.  To handle this, simply return if the scan is
2617          * not running.
2618         */
2619         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2620                 mutex_unlock(&mvm->mutex);
2621                 return 0;
2622         }
2623
2624         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2625         mutex_unlock(&mvm->mutex);
2626         iwl_mvm_wait_for_async_handlers(mvm);
2627
2628         return ret;
2629 }
2630
2631 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2632                                enum set_key_cmd cmd,
2633                                struct ieee80211_vif *vif,
2634                                struct ieee80211_sta *sta,
2635                                struct ieee80211_key_conf *key)
2636 {
2637         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2638         struct iwl_mvm_sta *mvmsta;
2639         struct iwl_mvm_key_pn *ptk_pn;
2640         int keyidx = key->keyidx;
2641         int ret;
2642         u8 key_offset;
2643
2644         if (iwlwifi_mod_params.sw_crypto) {
2645                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2646                 return -EOPNOTSUPP;
2647         }
2648
2649         switch (key->cipher) {
2650         case WLAN_CIPHER_SUITE_TKIP:
2651                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2652                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2653                 break;
2654         case WLAN_CIPHER_SUITE_CCMP:
2655                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2656                 break;
2657         case WLAN_CIPHER_SUITE_AES_CMAC:
2658                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2659                 break;
2660         case WLAN_CIPHER_SUITE_WEP40:
2661         case WLAN_CIPHER_SUITE_WEP104:
2662                 /* For non-client mode, only use WEP keys for TX as we probably
2663                  * don't have a station yet anyway and would then have to keep
2664                  * track of the keys, linking them to each of the clients/peers
2665                  * as they appear. For now, don't do that, for performance WEP
2666                  * offload doesn't really matter much, but we need it for some
2667                  * other offload features in client mode.
2668                  */
2669                 if (vif->type != NL80211_IFTYPE_STATION)
2670                         return 0;
2671                 break;
2672         default:
2673                 /* currently FW supports only one optional cipher scheme */
2674                 if (hw->n_cipher_schemes &&
2675                     hw->cipher_schemes->cipher == key->cipher)
2676                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2677                 else
2678                         return -EOPNOTSUPP;
2679         }
2680
2681         mutex_lock(&mvm->mutex);
2682
2683         switch (cmd) {
2684         case SET_KEY:
2685                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2686                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2687                         /*
2688                          * GTK on AP interface is a TX-only key, return 0;
2689                          * on IBSS they're per-station and because we're lazy
2690                          * we don't support them for RX, so do the same.
2691                          * CMAC in AP/IBSS modes must be done in software.
2692                          */
2693                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2694                                 ret = -EOPNOTSUPP;
2695                         else
2696                                 ret = 0;
2697                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2698                         break;
2699                 }
2700
2701                 /* During FW restart, in order to restore the state as it was,
2702                  * don't try to reprogram keys we previously failed for.
2703                  */
2704                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2705                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2706                         IWL_DEBUG_MAC80211(mvm,
2707                                            "skip invalid idx key programming during restart\n");
2708                         ret = 0;
2709                         break;
2710                 }
2711
2712                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2713                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2714                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2715                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2716                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2717                         struct ieee80211_key_seq seq;
2718                         int tid, q;
2719
2720                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2721                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2722                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2723                                          mvm->trans->num_rx_queues *
2724                                                 sizeof(ptk_pn->q[0]),
2725                                          GFP_KERNEL);
2726                         if (!ptk_pn) {
2727                                 ret = -ENOMEM;
2728                                 break;
2729                         }
2730
2731                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2732                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2733                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2734                                         memcpy(ptk_pn->q[q].pn[tid],
2735                                                seq.ccmp.pn,
2736                                                IEEE80211_CCMP_PN_LEN);
2737                         }
2738
2739                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2740                 }
2741
2742                 /* in HW restart reuse the index, otherwise request a new one */
2743                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2744                         key_offset = key->hw_key_idx;
2745                 else
2746                         key_offset = STA_KEY_IDX_INVALID;
2747
2748                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2749                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2750                 if (ret) {
2751                         IWL_WARN(mvm, "set key failed\n");
2752                         /*
2753                          * can't add key for RX, but we don't need it
2754                          * in the device for TX so still return 0
2755                          */
2756                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2757                         ret = 0;
2758                 }
2759
2760                 break;
2761         case DISABLE_KEY:
2762                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2763                         ret = 0;
2764                         break;
2765                 }
2766
2767                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2768                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2769                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2770                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2771                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2772                         ptk_pn = rcu_dereference_protected(
2773                                                 mvmsta->ptk_pn[keyidx],
2774                                                 lockdep_is_held(&mvm->mutex));
2775                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2776                         if (ptk_pn)
2777                                 kfree_rcu(ptk_pn, rcu_head);
2778                 }
2779
2780                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2781                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2782                 break;
2783         default:
2784                 ret = -EINVAL;
2785         }
2786
2787         mutex_unlock(&mvm->mutex);
2788         return ret;
2789 }
2790
2791 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2792                                         struct ieee80211_vif *vif,
2793                                         struct ieee80211_key_conf *keyconf,
2794                                         struct ieee80211_sta *sta,
2795                                         u32 iv32, u16 *phase1key)
2796 {
2797         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2798
2799         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2800                 return;
2801
2802         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2803 }
2804
2805
2806 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2807                                struct iwl_rx_packet *pkt, void *data)
2808 {
2809         struct iwl_mvm *mvm =
2810                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2811         struct iwl_hs20_roc_res *resp;
2812         int resp_len = iwl_rx_packet_payload_len(pkt);
2813         struct iwl_mvm_time_event_data *te_data = data;
2814
2815         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2816                 return true;
2817
2818         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2819                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2820                 return true;
2821         }
2822
2823         resp = (void *)pkt->data;
2824
2825         IWL_DEBUG_TE(mvm,
2826                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2827                      resp->status, resp->event_unique_id);
2828
2829         te_data->uid = le32_to_cpu(resp->event_unique_id);
2830         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2831                      te_data->uid);
2832
2833         spin_lock_bh(&mvm->time_event_lock);
2834         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2835         spin_unlock_bh(&mvm->time_event_lock);
2836
2837         return true;
2838 }
2839
2840 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2841 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2842 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2843 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2844 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2845 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2846                                     struct ieee80211_channel *channel,
2847                                     struct ieee80211_vif *vif,
2848                                     int duration)
2849 {
2850         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2851         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2852         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2853         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2854         struct iwl_notification_wait wait_time_event;
2855         u32 dtim_interval = vif->bss_conf.dtim_period *
2856                 vif->bss_conf.beacon_int;
2857         u32 req_dur, delay;
2858         struct iwl_hs20_roc_req aux_roc_req = {
2859                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2860                 .id_and_color =
2861                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2862                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2863                 /* Set the channel info data */
2864                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2865                         PHY_BAND_24 : PHY_BAND_5,
2866                 .channel_info.channel = channel->hw_value,
2867                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2868                 /* Set the time and duration */
2869                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2870          };
2871
2872         delay = AUX_ROC_MIN_DELAY;
2873         req_dur = MSEC_TO_TU(duration);
2874
2875         /*
2876          * If we are associated we want the delay time to be at least one
2877          * dtim interval so that the FW can wait until after the DTIM and
2878          * then start the time event, this will potentially allow us to
2879          * remain off-channel for the max duration.
2880          * Since we want to use almost a whole dtim interval we would also
2881          * like the delay to be for 2-3 dtim intervals, in case there are
2882          * other time events with higher priority.
2883          */
2884         if (vif->bss_conf.assoc) {
2885                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2886                 /* We cannot remain off-channel longer than the DTIM interval */
2887                 if (dtim_interval <= req_dur) {
2888                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2889                         if (req_dur <= AUX_ROC_MIN_DURATION)
2890                                 req_dur = dtim_interval -
2891                                         AUX_ROC_MIN_SAFETY_BUFFER;
2892                 }
2893         }
2894
2895         aux_roc_req.duration = cpu_to_le32(req_dur);
2896         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2897
2898         IWL_DEBUG_TE(mvm,
2899                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2900                      channel->hw_value, req_dur, duration, delay,
2901                      dtim_interval);
2902         /* Set the node address */
2903         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2904
2905         lockdep_assert_held(&mvm->mutex);
2906
2907         spin_lock_bh(&mvm->time_event_lock);
2908
2909         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2910                 spin_unlock_bh(&mvm->time_event_lock);
2911                 return -EIO;
2912         }
2913
2914         te_data->vif = vif;
2915         te_data->duration = duration;
2916         te_data->id = HOT_SPOT_CMD;
2917
2918         spin_unlock_bh(&mvm->time_event_lock);
2919
2920         /*
2921          * Use a notification wait, which really just processes the
2922          * command response and doesn't wait for anything, in order
2923          * to be able to process the response and get the UID inside
2924          * the RX path. Using CMD_WANT_SKB doesn't work because it
2925          * stores the buffer and then wakes up this thread, by which
2926          * time another notification (that the time event started)
2927          * might already be processed unsuccessfully.
2928          */
2929         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2930                                    time_event_response,
2931                                    ARRAY_SIZE(time_event_response),
2932                                    iwl_mvm_rx_aux_roc, te_data);
2933
2934         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2935                                    &aux_roc_req);
2936
2937         if (res) {
2938                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2939                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2940                 goto out_clear_te;
2941         }
2942
2943         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2944         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2945         /* should never fail */
2946         WARN_ON_ONCE(res);
2947
2948         if (res) {
2949  out_clear_te:
2950                 spin_lock_bh(&mvm->time_event_lock);
2951                 iwl_mvm_te_clear_data(mvm, te_data);
2952                 spin_unlock_bh(&mvm->time_event_lock);
2953         }
2954
2955         return res;
2956 }
2957
2958 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2959                        struct ieee80211_vif *vif,
2960                        struct ieee80211_channel *channel,
2961                        int duration,
2962                        enum ieee80211_roc_type type)
2963 {
2964         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2965         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2966         struct cfg80211_chan_def chandef;
2967         struct iwl_mvm_phy_ctxt *phy_ctxt;
2968         int ret, i;
2969
2970         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2971                            duration, type);
2972
2973         flush_work(&mvm->roc_done_wk);
2974
2975         mutex_lock(&mvm->mutex);
2976
2977         switch (vif->type) {
2978         case NL80211_IFTYPE_STATION:
2979                 if (fw_has_capa(&mvm->fw->ucode_capa,
2980                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
2981                         /* Use aux roc framework (HS20) */
2982                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2983                                                        vif, duration);
2984                         goto out_unlock;
2985                 }
2986                 IWL_ERR(mvm, "hotspot not supported\n");
2987                 ret = -EINVAL;
2988                 goto out_unlock;
2989         case NL80211_IFTYPE_P2P_DEVICE:
2990                 /* handle below */
2991                 break;
2992         default:
2993                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2994                 ret = -EINVAL;
2995                 goto out_unlock;
2996         }
2997
2998         for (i = 0; i < NUM_PHY_CTX; i++) {
2999                 phy_ctxt = &mvm->phy_ctxts[i];
3000                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3001                         continue;
3002
3003                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3004                         /*
3005                          * Unbind the P2P_DEVICE from the current PHY context,
3006                          * and if the PHY context is not used remove it.
3007                          */
3008                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3009                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3010                                 goto out_unlock;
3011
3012                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3013
3014                         /* Bind the P2P_DEVICE to the current PHY Context */
3015                         mvmvif->phy_ctxt = phy_ctxt;
3016
3017                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3018                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3019                                 goto out_unlock;
3020
3021                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3022                         goto schedule_time_event;
3023                 }
3024         }
3025
3026         /* Need to update the PHY context only if the ROC channel changed */
3027         if (channel == mvmvif->phy_ctxt->channel)
3028                 goto schedule_time_event;
3029
3030         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3031
3032         /*
3033          * Change the PHY context configuration as it is currently referenced
3034          * only by the P2P Device MAC
3035          */
3036         if (mvmvif->phy_ctxt->ref == 1) {
3037                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3038                                                &chandef, 1, 1);
3039                 if (ret)
3040                         goto out_unlock;
3041         } else {
3042                 /*
3043                  * The PHY context is shared with other MACs. Need to remove the
3044                  * P2P Device from the binding, allocate an new PHY context and
3045                  * create a new binding
3046                  */
3047                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3048                 if (!phy_ctxt) {
3049                         ret = -ENOSPC;
3050                         goto out_unlock;
3051                 }
3052
3053                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3054                                                1, 1);
3055                 if (ret) {
3056                         IWL_ERR(mvm, "Failed to change PHY context\n");
3057                         goto out_unlock;
3058                 }
3059
3060                 /* Unbind the P2P_DEVICE from the current PHY context */
3061                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3062                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3063                         goto out_unlock;
3064
3065                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3066
3067                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3068                 mvmvif->phy_ctxt = phy_ctxt;
3069
3070                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3071                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3072                         goto out_unlock;
3073
3074                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3075         }
3076
3077 schedule_time_event:
3078         /* Schedule the time events */
3079         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3080
3081 out_unlock:
3082         mutex_unlock(&mvm->mutex);
3083         IWL_DEBUG_MAC80211(mvm, "leave\n");
3084         return ret;
3085 }
3086
3087 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3088 {
3089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3090
3091         IWL_DEBUG_MAC80211(mvm, "enter\n");
3092
3093         mutex_lock(&mvm->mutex);
3094         iwl_mvm_stop_roc(mvm);
3095         mutex_unlock(&mvm->mutex);
3096
3097         IWL_DEBUG_MAC80211(mvm, "leave\n");
3098         return 0;
3099 }
3100
3101 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3102                                  struct ieee80211_chanctx_conf *ctx)
3103 {
3104         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3105         struct iwl_mvm_phy_ctxt *phy_ctxt;
3106         int ret;
3107
3108         lockdep_assert_held(&mvm->mutex);
3109
3110         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3111
3112         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3113         if (!phy_ctxt) {
3114                 ret = -ENOSPC;
3115                 goto out;
3116         }
3117
3118         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3119                                        ctx->rx_chains_static,
3120                                        ctx->rx_chains_dynamic);
3121         if (ret) {
3122                 IWL_ERR(mvm, "Failed to add PHY context\n");
3123                 goto out;
3124         }
3125
3126         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3127         *phy_ctxt_id = phy_ctxt->id;
3128 out:
3129         return ret;
3130 }
3131
3132 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3133                                struct ieee80211_chanctx_conf *ctx)
3134 {
3135         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3136         int ret;
3137
3138         mutex_lock(&mvm->mutex);
3139         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3140         mutex_unlock(&mvm->mutex);
3141
3142         return ret;
3143 }
3144
3145 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3146                                      struct ieee80211_chanctx_conf *ctx)
3147 {
3148         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3149         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3150
3151         lockdep_assert_held(&mvm->mutex);
3152
3153         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3154 }
3155
3156 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3157                                    struct ieee80211_chanctx_conf *ctx)
3158 {
3159         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3160
3161         mutex_lock(&mvm->mutex);
3162         __iwl_mvm_remove_chanctx(mvm, ctx);
3163         mutex_unlock(&mvm->mutex);
3164 }
3165
3166 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3167                                    struct ieee80211_chanctx_conf *ctx,
3168                                    u32 changed)
3169 {
3170         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3171         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3172         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3173
3174         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3175                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3176                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3177                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3178                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3179                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3180                       phy_ctxt->ref, changed))
3181                 return;
3182
3183         mutex_lock(&mvm->mutex);
3184         iwl_mvm_bt_coex_vif_change(mvm);
3185         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3186                                  ctx->rx_chains_static,
3187                                  ctx->rx_chains_dynamic);
3188         mutex_unlock(&mvm->mutex);
3189 }
3190
3191 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3192                                         struct ieee80211_vif *vif,
3193                                         struct ieee80211_chanctx_conf *ctx,
3194                                         bool switching_chanctx)
3195 {
3196         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3197         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3198         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3199         int ret;
3200
3201         lockdep_assert_held(&mvm->mutex);
3202
3203         mvmvif->phy_ctxt = phy_ctxt;
3204
3205         switch (vif->type) {
3206         case NL80211_IFTYPE_AP:
3207                 /* only needed if we're switching chanctx (i.e. during CSA) */
3208                 if (switching_chanctx) {
3209                         mvmvif->ap_ibss_active = true;
3210                         break;
3211                 }
3212         case NL80211_IFTYPE_ADHOC:
3213                 /*
3214                  * The AP binding flow is handled as part of the start_ap flow
3215                  * (in bss_info_changed), similarly for IBSS.
3216                  */
3217                 ret = 0;
3218                 goto out;
3219         case NL80211_IFTYPE_STATION:
3220                 break;
3221         case NL80211_IFTYPE_MONITOR:
3222                 /* always disable PS when a monitor interface is active */
3223                 mvmvif->ps_disabled = true;
3224                 break;
3225         default:
3226                 ret = -EINVAL;
3227                 goto out;
3228         }
3229
3230         ret = iwl_mvm_binding_add_vif(mvm, vif);
3231         if (ret)
3232                 goto out;
3233
3234         /*
3235          * Power state must be updated before quotas,
3236          * otherwise fw will complain.
3237          */
3238         iwl_mvm_power_update_mac(mvm);
3239
3240         /* Setting the quota at this stage is only required for monitor
3241          * interfaces. For the other types, the bss_info changed flow
3242          * will handle quota settings.
3243          */
3244         if (vif->type == NL80211_IFTYPE_MONITOR) {
3245                 mvmvif->monitor_active = true;
3246                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3247                 if (ret)
3248                         goto out_remove_binding;
3249
3250                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3251                 if (ret)
3252                         goto out_remove_binding;
3253
3254         }
3255
3256         /* Handle binding during CSA */
3257         if (vif->type == NL80211_IFTYPE_AP) {
3258                 iwl_mvm_update_quotas(mvm, false, NULL);
3259                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3260         }
3261
3262         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3263                 u32 duration = 2 * vif->bss_conf.beacon_int;
3264
3265                 /* iwl_mvm_protect_session() reads directly from the
3266                  * device (the system time), so make sure it is
3267                  * available.
3268                  */
3269                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3270                 if (ret)
3271                         goto out_remove_binding;
3272
3273                 /* Protect the session to make sure we hear the first
3274                  * beacon on the new channel.
3275                  */
3276                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3277                                         vif->bss_conf.beacon_int / 2,
3278                                         true);
3279
3280                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3281
3282                 iwl_mvm_update_quotas(mvm, false, NULL);
3283         }
3284
3285         goto out;
3286
3287 out_remove_binding:
3288         iwl_mvm_binding_remove_vif(mvm, vif);
3289         iwl_mvm_power_update_mac(mvm);
3290 out:
3291         if (ret)
3292                 mvmvif->phy_ctxt = NULL;
3293         return ret;
3294 }
3295 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3296                                       struct ieee80211_vif *vif,
3297                                       struct ieee80211_chanctx_conf *ctx)
3298 {
3299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3300         int ret;
3301
3302         mutex_lock(&mvm->mutex);
3303         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3304         mutex_unlock(&mvm->mutex);
3305
3306         return ret;
3307 }
3308
3309 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3310                                            struct ieee80211_vif *vif,
3311                                            struct ieee80211_chanctx_conf *ctx,
3312                                            bool switching_chanctx)
3313 {
3314         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3315         struct ieee80211_vif *disabled_vif = NULL;
3316
3317         lockdep_assert_held(&mvm->mutex);
3318
3319         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3320
3321         switch (vif->type) {
3322         case NL80211_IFTYPE_ADHOC:
3323                 goto out;
3324         case NL80211_IFTYPE_MONITOR:
3325                 mvmvif->monitor_active = false;
3326                 mvmvif->ps_disabled = false;
3327                 iwl_mvm_rm_snif_sta(mvm, vif);
3328                 break;
3329         case NL80211_IFTYPE_AP:
3330                 /* This part is triggered only during CSA */
3331                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3332                         goto out;
3333
3334                 mvmvif->csa_countdown = false;
3335
3336                 /* Set CS bit on all the stations */
3337                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3338
3339                 /* Save blocked iface, the timeout is set on the next beacon */
3340                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3341
3342                 mvmvif->ap_ibss_active = false;
3343                 break;
3344         case NL80211_IFTYPE_STATION:
3345                 if (!switching_chanctx)
3346                         break;
3347
3348                 disabled_vif = vif;
3349
3350                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3351                 break;
3352         default:
3353                 break;
3354         }
3355
3356         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3357         iwl_mvm_binding_remove_vif(mvm, vif);
3358
3359 out:
3360         mvmvif->phy_ctxt = NULL;
3361         iwl_mvm_power_update_mac(mvm);
3362 }
3363
3364 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3365                                          struct ieee80211_vif *vif,
3366                                          struct ieee80211_chanctx_conf *ctx)
3367 {
3368         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3369
3370         mutex_lock(&mvm->mutex);
3371         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3372         mutex_unlock(&mvm->mutex);
3373 }
3374
3375 static int
3376 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3377                                 struct ieee80211_vif_chanctx_switch *vifs)
3378 {
3379         int ret;
3380
3381         mutex_lock(&mvm->mutex);
3382         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3383         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3384
3385         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3386         if (ret) {
3387                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3388                 goto out_reassign;
3389         }
3390
3391         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3392                                            true);
3393         if (ret) {
3394                 IWL_ERR(mvm,
3395                         "failed to assign new_ctx during channel switch\n");
3396                 goto out_remove;
3397         }
3398
3399         /* we don't support TDLS during DCM - can be caused by channel switch */
3400         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3401                 iwl_mvm_teardown_tdls_peers(mvm);
3402
3403         goto out;
3404
3405 out_remove:
3406         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3407
3408 out_reassign:
3409         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3410                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3411                 goto out_restart;
3412         }
3413
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
3433 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3434                                     struct ieee80211_vif_chanctx_switch *vifs)
3435 {
3436         int ret;
3437
3438         mutex_lock(&mvm->mutex);
3439         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3440
3441         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3442                                            true);
3443         if (ret) {
3444                 IWL_ERR(mvm,
3445                         "failed to assign new_ctx during channel switch\n");
3446                 goto out_reassign;
3447         }
3448
3449         goto out;
3450
3451 out_reassign:
3452         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3453                                          true)) {
3454                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3455                 goto out_restart;
3456         }
3457
3458         goto out;
3459
3460 out_restart:
3461         /* things keep failing, better restart the hw */
3462         iwl_mvm_nic_restart(mvm, false);
3463
3464 out:
3465         mutex_unlock(&mvm->mutex);
3466
3467         return ret;
3468 }
3469
3470 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3471                                       struct ieee80211_vif_chanctx_switch *vifs,
3472                                       int n_vifs,
3473                                       enum ieee80211_chanctx_switch_mode mode)
3474 {
3475         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3476         int ret;
3477
3478         /* we only support a single-vif right now */
3479         if (n_vifs > 1)
3480                 return -EOPNOTSUPP;
3481
3482         switch (mode) {
3483         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3484                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3485                 break;
3486         case CHANCTX_SWMODE_REASSIGN_VIF:
3487                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3488                 break;
3489         default:
3490                 ret = -EOPNOTSUPP;
3491                 break;
3492         }
3493
3494         return ret;
3495 }
3496
3497 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3498                            struct ieee80211_sta *sta,
3499                            bool set)
3500 {
3501         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3502         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3503
3504         if (!mvm_sta || !mvm_sta->vif) {
3505                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3506                 return -EINVAL;
3507         }
3508
3509         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3510 }
3511
3512 #ifdef CONFIG_NL80211_TESTMODE
3513 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3514         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3515         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3516         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3517 };
3518
3519 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3520                                       struct ieee80211_vif *vif,
3521                                       void *data, int len)
3522 {
3523         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3524         int err;
3525         u32 noa_duration;
3526
3527         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3528         if (err)
3529                 return err;
3530
3531         if (!tb[IWL_MVM_TM_ATTR_CMD])
3532                 return -EINVAL;
3533
3534         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3535         case IWL_MVM_TM_CMD_SET_NOA:
3536                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3537                     !vif->bss_conf.enable_beacon ||
3538                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3539                         return -EINVAL;
3540
3541                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3542                 if (noa_duration >= vif->bss_conf.beacon_int)
3543                         return -EINVAL;
3544
3545                 mvm->noa_duration = noa_duration;
3546                 mvm->noa_vif = vif;
3547
3548                 return iwl_mvm_update_quotas(mvm, false, NULL);
3549         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3550                 /* must be associated client vif - ignore authorized */
3551                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3552                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3553                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3554                         return -EINVAL;
3555
3556                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3557                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3558                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3559         }
3560
3561         return -EOPNOTSUPP;
3562 }
3563
3564 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3565                                     struct ieee80211_vif *vif,
3566                                     void *data, int len)
3567 {
3568         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3569         int err;
3570
3571         mutex_lock(&mvm->mutex);
3572         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3573         mutex_unlock(&mvm->mutex);
3574
3575         return err;
3576 }
3577 #endif
3578
3579 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3580                                    struct ieee80211_vif *vif,
3581                                    struct ieee80211_channel_switch *chsw)
3582 {
3583         /* By implementing this operation, we prevent mac80211 from
3584          * starting its own channel switch timer, so that we can call
3585          * ieee80211_chswitch_done() ourselves at the right time
3586          * (which is when the absence time event starts).
3587          */
3588
3589         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3590                            "dummy channel switch op\n");
3591 }
3592
3593 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3594                                       struct ieee80211_vif *vif,
3595                                       struct ieee80211_channel_switch *chsw)
3596 {
3597         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3598         struct ieee80211_vif *csa_vif;
3599         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3600         u32 apply_time;
3601         int ret;
3602
3603         mutex_lock(&mvm->mutex);
3604
3605         mvmvif->csa_failed = false;
3606
3607         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3608                            chsw->chandef.center_freq1);
3609
3610         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3611
3612         switch (vif->type) {
3613         case NL80211_IFTYPE_AP:
3614                 csa_vif =
3615                         rcu_dereference_protected(mvm->csa_vif,
3616                                                   lockdep_is_held(&mvm->mutex));
3617                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3618                               "Another CSA is already in progress")) {
3619                         ret = -EBUSY;
3620                         goto out_unlock;
3621                 }
3622
3623                 rcu_assign_pointer(mvm->csa_vif, vif);
3624
3625                 if (WARN_ONCE(mvmvif->csa_countdown,
3626                               "Previous CSA countdown didn't complete")) {
3627                         ret = -EBUSY;
3628                         goto out_unlock;
3629                 }
3630
3631                 break;
3632         case NL80211_IFTYPE_STATION:
3633                 /* Schedule the time event to a bit before beacon 1,
3634                  * to make sure we're in the new channel when the
3635                  * GO/AP arrives.
3636                  */
3637                 apply_time = chsw->device_timestamp +
3638                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3639                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3640
3641                 if (chsw->block_tx)
3642                         iwl_mvm_csa_client_absent(mvm, vif);
3643
3644                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3645                                             apply_time);
3646                 if (mvmvif->bf_data.bf_enabled) {
3647                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3648                         if (ret)
3649                                 goto out_unlock;
3650                 }
3651
3652                 break;
3653         default:
3654                 break;
3655         }
3656
3657         mvmvif->ps_disabled = true;
3658
3659         ret = iwl_mvm_power_update_ps(mvm);
3660         if (ret)
3661                 goto out_unlock;
3662
3663         /* we won't be on this channel any longer */
3664         iwl_mvm_teardown_tdls_peers(mvm);
3665
3666 out_unlock:
3667         mutex_unlock(&mvm->mutex);
3668
3669         return ret;
3670 }
3671
3672 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3673                                        struct ieee80211_vif *vif)
3674 {
3675         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3676         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3677         int ret;
3678
3679         mutex_lock(&mvm->mutex);
3680
3681         if (mvmvif->csa_failed) {
3682                 mvmvif->csa_failed = false;
3683                 ret = -EIO;
3684                 goto out_unlock;
3685         }
3686
3687         if (vif->type == NL80211_IFTYPE_STATION) {
3688                 struct iwl_mvm_sta *mvmsta;
3689
3690                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3691                                                           mvmvif->ap_sta_id);
3692
3693                 if (WARN_ON(!mvmsta)) {
3694                         ret = -EIO;
3695                         goto out_unlock;
3696                 }
3697
3698                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3699
3700                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3701
3702                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3703                 if (ret)
3704                         goto out_unlock;
3705
3706                 iwl_mvm_stop_session_protection(mvm, vif);
3707         }
3708
3709         mvmvif->ps_disabled = false;
3710
3711         ret = iwl_mvm_power_update_ps(mvm);
3712
3713 out_unlock:
3714         mutex_unlock(&mvm->mutex);
3715
3716         return ret;
3717 }
3718
3719 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3720                               struct ieee80211_vif *vif, u32 queues, bool drop)
3721 {
3722         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3723         struct iwl_mvm_vif *mvmvif;
3724         struct iwl_mvm_sta *mvmsta;
3725         struct ieee80211_sta *sta;
3726         int i;
3727         u32 msk = 0;
3728
3729         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3730                 return;
3731
3732         mutex_lock(&mvm->mutex);
3733         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3734
3735         /* flush the AP-station and all TDLS peers */
3736         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3737                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3738                                                 lockdep_is_held(&mvm->mutex));
3739                 if (IS_ERR_OR_NULL(sta))
3740                         continue;
3741
3742                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3743                 if (mvmsta->vif != vif)
3744                         continue;
3745
3746                 /* make sure only TDLS peers or the AP are flushed */
3747                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3748
3749                 msk |= mvmsta->tfd_queue_msk;
3750         }
3751
3752         if (drop) {
3753                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3754                         IWL_ERR(mvm, "flush request fail\n");
3755                 mutex_unlock(&mvm->mutex);
3756         } else {
3757                 mutex_unlock(&mvm->mutex);
3758
3759                 /* this can take a while, and we may need/want other operations
3760                  * to succeed while doing this, so do it without the mutex held
3761                  */
3762                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3763         }
3764 }
3765
3766 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3767                                   struct survey_info *survey)
3768 {
3769         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3770         int ret;
3771
3772         memset(survey, 0, sizeof(*survey));
3773
3774         /* only support global statistics right now */
3775         if (idx != 0)
3776                 return -ENOENT;
3777
3778         if (fw_has_capa(&mvm->fw->ucode_capa,
3779                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3780                 return -ENOENT;
3781
3782         mutex_lock(&mvm->mutex);
3783
3784         if (mvm->ucode_loaded) {
3785                 ret = iwl_mvm_request_statistics(mvm, false);
3786                 if (ret)
3787                         goto out;
3788         }
3789
3790         survey->filled = SURVEY_INFO_TIME |
3791                          SURVEY_INFO_TIME_RX |
3792                          SURVEY_INFO_TIME_TX |
3793                          SURVEY_INFO_TIME_SCAN;
3794         survey->time = mvm->accu_radio_stats.on_time_rf +
3795                        mvm->radio_stats.on_time_rf;
3796         do_div(survey->time, USEC_PER_MSEC);
3797
3798         survey->time_rx = mvm->accu_radio_stats.rx_time +
3799                           mvm->radio_stats.rx_time;
3800         do_div(survey->time_rx, USEC_PER_MSEC);
3801
3802         survey->time_tx = mvm->accu_radio_stats.tx_time +
3803                           mvm->radio_stats.tx_time;
3804         do_div(survey->time_tx, USEC_PER_MSEC);
3805
3806         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3807                             mvm->radio_stats.on_time_scan;
3808         do_div(survey->time_scan, USEC_PER_MSEC);
3809
3810         ret = 0;
3811  out:
3812         mutex_unlock(&mvm->mutex);
3813         return ret;
3814 }
3815
3816 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3817                                        struct ieee80211_vif *vif,
3818                                        struct ieee80211_sta *sta,
3819                                        struct station_info *sinfo)
3820 {
3821         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3822         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3823         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3824
3825         if (fw_has_capa(&mvm->fw->ucode_capa,
3826                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3827                 return;
3828
3829         /* if beacon filtering isn't on mac80211 does it anyway */
3830         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3831                 return;
3832
3833         if (!vif->bss_conf.assoc)
3834                 return;
3835
3836         mutex_lock(&mvm->mutex);
3837
3838         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3839                 goto unlock;
3840
3841         if (iwl_mvm_request_statistics(mvm, false))
3842                 goto unlock;
3843
3844         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3845                            mvmvif->beacon_stats.accu_num_beacons;
3846         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3847         if (mvmvif->beacon_stats.avg_signal) {
3848                 /* firmware only reports a value after RXing a few beacons */
3849                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3850                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3851         }
3852  unlock:
3853         mutex_unlock(&mvm->mutex);
3854 }
3855
3856 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3857                                         struct ieee80211_vif *vif,
3858                                         const struct ieee80211_event *event)
3859 {
3860 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3861         do {                                                    \
3862                 if ((_cnt) && --(_cnt))                         \
3863                         break;                                  \
3864                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3865         } while (0)
3866
3867         struct iwl_fw_dbg_trigger_tlv *trig;
3868         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3869
3870         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3871                 return;
3872
3873         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3874         trig_mlme = (void *)trig->data;
3875         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3876                 return;
3877
3878         if (event->u.mlme.data == ASSOC_EVENT) {
3879                 if (event->u.mlme.status == MLME_DENIED)
3880                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3881                                            trig_mlme->stop_assoc_denied,
3882                                            "DENIED ASSOC: reason %d",
3883                                             event->u.mlme.reason);
3884                 else if (event->u.mlme.status == MLME_TIMEOUT)
3885                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3886                                            trig_mlme->stop_assoc_timeout,
3887                                            "ASSOC TIMEOUT");
3888         } else if (event->u.mlme.data == AUTH_EVENT) {
3889                 if (event->u.mlme.status == MLME_DENIED)
3890                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3891                                            trig_mlme->stop_auth_denied,
3892                                            "DENIED AUTH: reason %d",
3893                                            event->u.mlme.reason);
3894                 else if (event->u.mlme.status == MLME_TIMEOUT)
3895                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3896                                            trig_mlme->stop_auth_timeout,
3897                                            "AUTH TIMEOUT");
3898         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3899                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3900                                    trig_mlme->stop_rx_deauth,
3901                                    "DEAUTH RX %d", event->u.mlme.reason);
3902         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3903                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3904                                    trig_mlme->stop_tx_deauth,
3905                                    "DEAUTH TX %d", event->u.mlme.reason);
3906         }
3907 #undef CHECK_MLME_TRIGGER
3908 }
3909
3910 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3911                                           struct ieee80211_vif *vif,
3912                                           const struct ieee80211_event *event)
3913 {
3914         struct iwl_fw_dbg_trigger_tlv *trig;
3915         struct iwl_fw_dbg_trigger_ba *ba_trig;
3916
3917         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3918                 return;
3919
3920         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3921         ba_trig = (void *)trig->data;
3922         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3923                 return;
3924
3925         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3926                 return;
3927
3928         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3929                                     "BAR received from %pM, tid %d, ssn %d",
3930                                     event->u.ba.sta->addr, event->u.ba.tid,
3931                                     event->u.ba.ssn);
3932 }
3933
3934 static void
3935 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3936                                      struct ieee80211_vif *vif,
3937                                      const struct ieee80211_event *event)
3938 {
3939         struct iwl_fw_dbg_trigger_tlv *trig;
3940         struct iwl_fw_dbg_trigger_ba *ba_trig;
3941
3942         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3943                 return;
3944
3945         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3946         ba_trig = (void *)trig->data;
3947         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3948                 return;
3949
3950         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
3951                 return;
3952
3953         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3954                                     "Frame from %pM timed out, tid %d",
3955                                     event->u.ba.sta->addr, event->u.ba.tid);
3956 }
3957
3958 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
3959                                        struct ieee80211_vif *vif,
3960                                        const struct ieee80211_event *event)
3961 {
3962         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3963
3964         switch (event->type) {
3965         case MLME_EVENT:
3966                 iwl_mvm_event_mlme_callback(mvm, vif, event);
3967                 break;
3968         case BAR_RX_EVENT:
3969                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
3970                 break;
3971         case BA_FRAME_TIMEOUT:
3972                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
3973                 break;
3974         default:
3975                 break;
3976         }
3977 }
3978
3979 const struct ieee80211_ops iwl_mvm_hw_ops = {
3980         .tx = iwl_mvm_mac_tx,
3981         .ampdu_action = iwl_mvm_mac_ampdu_action,
3982         .start = iwl_mvm_mac_start,
3983         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3984         .stop = iwl_mvm_mac_stop,
3985         .add_interface = iwl_mvm_mac_add_interface,
3986         .remove_interface = iwl_mvm_mac_remove_interface,
3987         .config = iwl_mvm_mac_config,
3988         .prepare_multicast = iwl_mvm_prepare_multicast,
3989         .configure_filter = iwl_mvm_configure_filter,
3990         .config_iface_filter = iwl_mvm_config_iface_filter,
3991         .bss_info_changed = iwl_mvm_bss_info_changed,
3992         .hw_scan = iwl_mvm_mac_hw_scan,
3993         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3994         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3995         .sta_state = iwl_mvm_mac_sta_state,
3996         .sta_notify = iwl_mvm_mac_sta_notify,
3997         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3998         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3999         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4000         .sta_rc_update = iwl_mvm_sta_rc_update,
4001         .conf_tx = iwl_mvm_mac_conf_tx,
4002         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4003         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4004         .flush = iwl_mvm_mac_flush,
4005         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4006         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4007         .set_key = iwl_mvm_mac_set_key,
4008         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4009         .remain_on_channel = iwl_mvm_roc,
4010         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4011         .add_chanctx = iwl_mvm_add_chanctx,
4012         .remove_chanctx = iwl_mvm_remove_chanctx,
4013         .change_chanctx = iwl_mvm_change_chanctx,
4014         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4015         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4016         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4017
4018         .start_ap = iwl_mvm_start_ap_ibss,
4019         .stop_ap = iwl_mvm_stop_ap_ibss,
4020         .join_ibss = iwl_mvm_start_ap_ibss,
4021         .leave_ibss = iwl_mvm_stop_ap_ibss,
4022
4023         .set_tim = iwl_mvm_set_tim,
4024
4025         .channel_switch = iwl_mvm_channel_switch,
4026         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4027         .post_channel_switch = iwl_mvm_post_channel_switch,
4028
4029         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4030         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4031         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4032
4033         .event_callback = iwl_mvm_mac_event_callback,
4034
4035         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4036
4037 #ifdef CONFIG_PM_SLEEP
4038         /* look at d3.c */
4039         .suspend = iwl_mvm_suspend,
4040         .resume = iwl_mvm_resume,
4041         .set_wakeup = iwl_mvm_set_wakeup,
4042         .set_rekey_data = iwl_mvm_set_rekey_data,
4043 #if IS_ENABLED(CONFIG_IPV6)
4044         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4045 #endif
4046         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4047 #endif
4048         .get_survey = iwl_mvm_mac_get_survey,
4049         .sta_statistics = iwl_mvm_mac_sta_statistics,
4050 };