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[NL80211_BAND_2GHZ].n_channels)
 554                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 555                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 556         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 557                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 558                         &mvm->nvm_data->bands[NL80211_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[NL80211_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 &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 670                                          NETIF_F_RXCSUM);
 671                 /* We may support SW TX CSUM */
 672                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 673                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 674         }
 675
 676         ret = ieee80211_register_hw(mvm->hw);
 677         if (ret)
 678                 iwl_mvm_leds_exit(mvm);
 679
 680         return ret;
 681 }
 682
 683 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 684                              struct ieee80211_sta *sta,
 685                              struct sk_buff *skb)
 686 {
 687         struct iwl_mvm_sta *mvmsta;
 688         bool defer = false;
 689
 690         /*
 691          * double check the IN_D0I3 flag both before and after
 692          * taking the spinlock, in order to prevent taking
 693          * the spinlock when not needed.
 694          */
 695         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 696                 return false;
 697
 698         spin_lock(&mvm->d0i3_tx_lock);
 699         /*
 700          * testing the flag again ensures the skb dequeue
 701          * loop (on d0i3 exit) hasn't run yet.
 702          */
 703         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 704                 goto out;
 705
 706         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 707         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 708             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 709                 goto out;
 710
 711         __skb_queue_tail(&mvm->d0i3_tx, skb);
 712         ieee80211_stop_queues(mvm->hw);
 713
 714         /* trigger wakeup */
 715         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 716         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 717
 718         defer = true;
 719 out:
 720         spin_unlock(&mvm->d0i3_tx_lock);
 721         return defer;
 722 }
 723
 724 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 725                            struct ieee80211_tx_control *control,
 726                            struct sk_buff *skb)
 727 {
 728         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 729         struct ieee80211_sta *sta = control->sta;
 730         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 731         struct ieee80211_hdr *hdr = (void *)skb->data;
 732
 733         if (iwl_mvm_is_radio_killed(mvm)) {
 734                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 735                 goto drop;
 736         }
 737
 738         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 739             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 740             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 741                 goto drop;
 742
 743         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 744         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 745                      ieee80211_is_mgmt(hdr->frame_control) &&
 746                      !ieee80211_is_deauth(hdr->frame_control) &&
 747                      !ieee80211_is_disassoc(hdr->frame_control) &&
 748                      !ieee80211_is_action(hdr->frame_control)))
 749                 sta = NULL;
 750
 751         if (sta) {
 752                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 753                         return;
 754                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 755                         goto drop;
 756                 return;
 757         }
 758
 759         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 760                 goto drop;
 761         return;
 762  drop:
 763         ieee80211_free_txskb(hw, skb);
 764 }
 765
 766 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 767 {
 768         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 769                 return false;
 770         return true;
 771 }
 772
 773 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 774 {
 775         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 776                 return false;
 777         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 778                 return true;
 779
 780         /* enabled by default */
 781         return true;
 782 }
 783
 784 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 785         do {                                                    \
 786                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 787                         break;                                  \
 788                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 789         } while (0)
 790
 791 static void
 792 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 793                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 794                             enum ieee80211_ampdu_mlme_action action)
 795 {
 796         struct iwl_fw_dbg_trigger_tlv *trig;
 797         struct iwl_fw_dbg_trigger_ba *ba_trig;
 798
 799         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 800                 return;
 801
 802         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 803         ba_trig = (void *)trig->data;
 804
 805         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 806                 return;
 807
 808         switch (action) {
 809         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 810                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 811                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 812
 813                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 814                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 815                                  sta->addr, tid, tid_data->ssn);
 816                 break;
 817                 }
 818         case IEEE80211_AMPDU_TX_STOP_CONT:
 819                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 820                                  "TX AGG STOP: MAC %pM tid %d\n",
 821                                  sta->addr, tid);
 822                 break;
 823         case IEEE80211_AMPDU_RX_START:
 824                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 825                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 826                                  sta->addr, tid, rx_ba_ssn);
 827                 break;
 828         case IEEE80211_AMPDU_RX_STOP:
 829                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 830                                  "RX AGG STOP: MAC %pM tid %d\n",
 831                                  sta->addr, tid);
 832                 break;
 833         default:
 834                 break;
 835         }
 836 }
 837
 838 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 839                                     struct ieee80211_vif *vif,
 840                                     struct ieee80211_ampdu_params *params)
 841 {
 842         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 843         int ret;
 844         bool tx_agg_ref = false;
 845         struct ieee80211_sta *sta = params->sta;
 846         enum ieee80211_ampdu_mlme_action action = params->action;
 847         u16 tid = params->tid;
 848         u16 *ssn = &params->ssn;
 849         u8 buf_size = params->buf_size;
 850         bool amsdu = params->amsdu;
 851
 852         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 853                      sta->addr, tid, action);
 854
 855         if (!(mvm->nvm_data->sku_cap_11n_enable))
 856                 return -EACCES;
 857
 858         /* return from D0i3 before starting a new Tx aggregation */
 859         switch (action) {
 860         case IEEE80211_AMPDU_TX_START:
 861         case IEEE80211_AMPDU_TX_STOP_CONT:
 862         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 863         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 864         case IEEE80211_AMPDU_TX_OPERATIONAL:
 865                 /*
 866                  * for tx start, wait synchronously until D0i3 exit to
 867                  * get the correct sequence number for the tid.
 868                  * additionally, some other ampdu actions use direct
 869                  * target access, which is not handled automatically
 870                  * by the trans layer (unlike commands), so wait for
 871                  * d0i3 exit in these cases as well.
 872                  */
 873                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 874                 if (ret)
 875                         return ret;
 876
 877                 tx_agg_ref = true;
 878                 break;
 879         default:
 880                 break;
 881         }
 882
 883         mutex_lock(&mvm->mutex);
 884
 885         switch (action) {
 886         case IEEE80211_AMPDU_RX_START:
 887                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 888                         ret = -EINVAL;
 889                         break;
 890                 }
 891                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
 892                 break;
 893         case IEEE80211_AMPDU_RX_STOP:
 894                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
 895                 break;
 896         case IEEE80211_AMPDU_TX_START:
 897                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 898                         ret = -EINVAL;
 899                         break;
 900                 }
 901                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 902                 break;
 903         case IEEE80211_AMPDU_TX_STOP_CONT:
 904                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 905                 break;
 906         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 907         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 908                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 909                 break;
 910         case IEEE80211_AMPDU_TX_OPERATIONAL:
 911                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 912                                               buf_size, amsdu);
 913                 break;
 914         default:
 915                 WARN_ON_ONCE(1);
 916                 ret = -EINVAL;
 917                 break;
 918         }
 919
 920         if (!ret) {
 921                 u16 rx_ba_ssn = 0;
 922
 923                 if (action == IEEE80211_AMPDU_RX_START)
 924                         rx_ba_ssn = *ssn;
 925
 926                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 927                                             rx_ba_ssn, action);
 928         }
 929         mutex_unlock(&mvm->mutex);
 930
 931         /*
 932          * If the tid is marked as started, we won't use it for offloaded
 933          * traffic on the next D0i3 entry. It's safe to unref.
 934          */
 935         if (tx_agg_ref)
 936                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 937
 938         return ret;
 939 }
 940
 941 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 942                                      struct ieee80211_vif *vif)
 943 {
 944         struct iwl_mvm *mvm = data;
 945         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 946
 947         mvmvif->uploaded = false;
 948         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 949
 950         spin_lock_bh(&mvm->time_event_lock);
 951         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 952         spin_unlock_bh(&mvm->time_event_lock);
 953
 954         mvmvif->phy_ctxt = NULL;
 955         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 956 }
 957
 958 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 959 {
 960         /* clear the D3 reconfig, we only need it to avoid dumping a
 961          * firmware coredump on reconfiguration, we shouldn't do that
 962          * on D3->D0 transition
 963          */
 964         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
 965                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
 966                 iwl_mvm_fw_error_dump(mvm);
 967         }
 968
 969         /* cleanup all stale references (scan, roc), but keep the
 970          * ucode_down ref until reconfig is complete
 971          */
 972         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 973
 974         iwl_mvm_stop_device(mvm);
 975
 976         mvm->scan_status = 0;
 977         mvm->ps_disabled = false;
 978         mvm->calibrating = false;
 979
 980         /* just in case one was running */
 981         iwl_mvm_cleanup_roc_te(mvm);
 982         ieee80211_remain_on_channel_expired(mvm->hw);
 983
 984         /*
 985          * cleanup all interfaces, even inactive ones, as some might have
 986          * gone down during the HW restart
 987          */
 988         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
 989
 990         mvm->p2p_device_vif = NULL;
 991         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 992
 993         iwl_mvm_reset_phy_ctxts(mvm);
 994         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 995         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 996         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
 997         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 998         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 999         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1000         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1001         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1002         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1003         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1004
1005         ieee80211_wake_queues(mvm->hw);
1006
1007         /* clear any stale d0i3 state */
1008         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1009
1010         mvm->vif_count = 0;
1011         mvm->rx_ba_sessions = 0;
1012         mvm->fw_dbg_conf = FW_DBG_INVALID;
1013
1014         /* keep statistics ticking */
1015         iwl_mvm_accu_radio_stats(mvm);
1016 }
1017
1018 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1019 {
1020         int ret;
1021
1022         lockdep_assert_held(&mvm->mutex);
1023
1024         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1025                 /* Clean up some internal and mac80211 state on restart */
1026                 iwl_mvm_restart_cleanup(mvm);
1027         } else {
1028                 /* Hold the reference to prevent runtime suspend while
1029                  * the start procedure runs.  It's a bit confusing
1030                  * that the UCODE_DOWN reference is taken, but it just
1031                  * means "UCODE is not UP yet". ( TODO: rename this
1032                  * reference).
1033                  */
1034                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1035         }
1036         ret = iwl_mvm_up(mvm);
1037
1038         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1039                 /* Something went wrong - we need to finish some cleanup
1040                  * that normally iwl_mvm_mac_restart_complete() below
1041                  * would do.
1042                  */
1043                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1044                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1045         }
1046
1047         return ret;
1048 }
1049
1050 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1051 {
1052         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1053         int ret;
1054
1055         /* Some hw restart cleanups must not hold the mutex */
1056         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1057                 /*
1058                  * Make sure we are out of d0i3. This is needed
1059                  * to make sure the reference accounting is correct
1060                  * (and there is no stale d0i3_exit_work).
1061                  */
1062                 wait_event_timeout(mvm->d0i3_exit_waitq,
1063                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1064                                              &mvm->status),
1065                                    HZ);
1066         }
1067
1068         mutex_lock(&mvm->mutex);
1069         ret = __iwl_mvm_mac_start(mvm);
1070         mutex_unlock(&mvm->mutex);
1071
1072         return ret;
1073 }
1074
1075 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1076 {
1077         int ret;
1078
1079         mutex_lock(&mvm->mutex);
1080
1081         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1082         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1083         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1084         if (ret)
1085                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1086                         ret);
1087
1088         /* allow transport/FW low power modes */
1089         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1090
1091         /*
1092          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1093          * of packets the FW sent out, so we must reconnect.
1094          */
1095         iwl_mvm_teardown_tdls_peers(mvm);
1096
1097         mutex_unlock(&mvm->mutex);
1098 }
1099
1100 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1101 {
1102         if (iwl_mvm_is_d0i3_supported(mvm) &&
1103             iwl_mvm_enter_d0i3_on_suspend(mvm))
1104                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1105                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1106                                                         &mvm->status),
1107                                               HZ),
1108                           "D0i3 exit on resume timed out\n");
1109 }
1110
1111 static void
1112 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1113                               enum ieee80211_reconfig_type reconfig_type)
1114 {
1115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117         switch (reconfig_type) {
1118         case IEEE80211_RECONFIG_TYPE_RESTART:
1119                 iwl_mvm_restart_complete(mvm);
1120                 break;
1121         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1122                 iwl_mvm_resume_complete(mvm);
1123                 break;
1124         }
1125 }
1126
1127 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1128 {
1129         lockdep_assert_held(&mvm->mutex);
1130
1131         /* firmware counters are obviously reset now, but we shouldn't
1132          * partially track so also clear the fw_reset_accu counters.
1133          */
1134         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1135
1136         /* async_handlers_wk is now blocked */
1137
1138         /*
1139          * The work item could be running or queued if the
1140          * ROC time event stops just as we get here.
1141          */
1142         flush_work(&mvm->roc_done_wk);
1143
1144         iwl_mvm_stop_device(mvm);
1145
1146         iwl_mvm_async_handlers_purge(mvm);
1147         /* async_handlers_list is empty and will stay empty: HW is stopped */
1148
1149         /* the fw is stopped, the aux sta is dead: clean up driver state */
1150         iwl_mvm_del_aux_sta(mvm);
1151
1152         iwl_free_fw_paging(mvm);
1153
1154         /*
1155          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1156          * won't be called in this case).
1157          * But make sure to cleanup interfaces that have gone down before/during
1158          * HW restart was requested.
1159          */
1160         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1161                 ieee80211_iterate_interfaces(mvm->hw, 0,
1162                                              iwl_mvm_cleanup_iterator, mvm);
1163
1164         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1165          * make sure there's nothing left there and warn if any is found.
1166          */
1167         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1168                 int i;
1169
1170                 for (i = 0; i < mvm->max_scans; i++) {
1171                         if (WARN_ONCE(mvm->scan_uid_status[i],
1172                                       "UMAC scan UID %d status was not cleaned\n",
1173                                       i))
1174                                 mvm->scan_uid_status[i] = 0;
1175                 }
1176         }
1177 }
1178
1179 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1180 {
1181         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1182
1183         flush_work(&mvm->d0i3_exit_work);
1184         flush_work(&mvm->async_handlers_wk);
1185         flush_work(&mvm->add_stream_wk);
1186         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1187         iwl_mvm_free_fw_dump_desc(mvm);
1188
1189         mutex_lock(&mvm->mutex);
1190         __iwl_mvm_mac_stop(mvm);
1191         mutex_unlock(&mvm->mutex);
1192
1193         /*
1194          * The worker might have been waiting for the mutex, let it run and
1195          * discover that its list is now empty.
1196          */
1197         cancel_work_sync(&mvm->async_handlers_wk);
1198 }
1199
1200 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1201 {
1202         u16 i;
1203
1204         lockdep_assert_held(&mvm->mutex);
1205
1206         for (i = 0; i < NUM_PHY_CTX; i++)
1207                 if (!mvm->phy_ctxts[i].ref)
1208                         return &mvm->phy_ctxts[i];
1209
1210         IWL_ERR(mvm, "No available PHY context\n");
1211         return NULL;
1212 }
1213
1214 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1215                                 s16 tx_power)
1216 {
1217         struct iwl_dev_tx_power_cmd cmd = {
1218                 .v2.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1219                 .v2.mac_context_id =
1220                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1221                 .v2.pwr_restriction = cpu_to_le16(8 * tx_power),
1222         };
1223         int len = sizeof(cmd);
1224
1225         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1226                 cmd.v2.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1227
1228         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_CHAIN))
1229                 len = sizeof(cmd.v2);
1230
1231         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1232 }
1233
1234 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1235                                      struct ieee80211_vif *vif)
1236 {
1237         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1238         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1239         int ret;
1240
1241         mvmvif->mvm = mvm;
1242
1243         /*
1244          * make sure D0i3 exit is completed, otherwise a target access
1245          * during tx queue configuration could be done when still in
1246          * D0i3 state.
1247          */
1248         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1249         if (ret)
1250                 return ret;
1251
1252         /*
1253          * Not much to do here. The stack will not allow interface
1254          * types or combinations that we didn't advertise, so we
1255          * don't really have to check the types.
1256          */
1257
1258         mutex_lock(&mvm->mutex);
1259
1260         /* make sure that beacon statistics don't go backwards with FW reset */
1261         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1262                 mvmvif->beacon_stats.accu_num_beacons +=
1263                         mvmvif->beacon_stats.num_beacons;
1264
1265         /* Allocate resources for the MAC context, and add it to the fw  */
1266         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1267         if (ret)
1268                 goto out_unlock;
1269
1270         /* Counting number of interfaces is needed for legacy PM */
1271         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1272                 mvm->vif_count++;
1273
1274         /*
1275          * The AP binding flow can be done only after the beacon
1276          * template is configured (which happens only in the mac80211
1277          * start_ap() flow), and adding the broadcast station can happen
1278          * only after the binding.
1279          * In addition, since modifying the MAC before adding a bcast
1280          * station is not allowed by the FW, delay the adding of MAC context to
1281          * the point where we can also add the bcast station.
1282          * In short: there's not much we can do at this point, other than
1283          * allocating resources :)
1284          */
1285         if (vif->type == NL80211_IFTYPE_AP ||
1286             vif->type == NL80211_IFTYPE_ADHOC) {
1287                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1288                 if (ret) {
1289                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1290                         goto out_release;
1291                 }
1292
1293                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1294                 goto out_unlock;
1295         }
1296
1297         mvmvif->features |= hw->netdev_features;
1298
1299         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1300         if (ret)
1301                 goto out_release;
1302
1303         ret = iwl_mvm_power_update_mac(mvm);
1304         if (ret)
1305                 goto out_remove_mac;
1306
1307         /* beacon filtering */
1308         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1309         if (ret)
1310                 goto out_remove_mac;
1311
1312         if (!mvm->bf_allowed_vif &&
1313             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1314                 mvm->bf_allowed_vif = mvmvif;
1315                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1316                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1317         }
1318
1319         /*
1320          * P2P_DEVICE interface does not have a channel context assigned to it,
1321          * so a dedicated PHY context is allocated to it and the corresponding
1322          * MAC context is bound to it at this stage.
1323          */
1324         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1325
1326                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1327                 if (!mvmvif->phy_ctxt) {
1328                         ret = -ENOSPC;
1329                         goto out_free_bf;
1330                 }
1331
1332                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1333                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1334                 if (ret)
1335                         goto out_unref_phy;
1336
1337                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1338                 if (ret)
1339                         goto out_unbind;
1340
1341                 /* Save a pointer to p2p device vif, so it can later be used to
1342                  * update the p2p device MAC when a GO is started/stopped */
1343                 mvm->p2p_device_vif = vif;
1344         }
1345
1346         iwl_mvm_vif_dbgfs_register(mvm, vif);
1347         goto out_unlock;
1348
1349  out_unbind:
1350         iwl_mvm_binding_remove_vif(mvm, vif);
1351  out_unref_phy:
1352         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1353  out_free_bf:
1354         if (mvm->bf_allowed_vif == mvmvif) {
1355                 mvm->bf_allowed_vif = NULL;
1356                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1357                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1358         }
1359  out_remove_mac:
1360         mvmvif->phy_ctxt = NULL;
1361         iwl_mvm_mac_ctxt_remove(mvm, vif);
1362  out_release:
1363         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1364                 mvm->vif_count--;
1365
1366         iwl_mvm_mac_ctxt_release(mvm, vif);
1367  out_unlock:
1368         mutex_unlock(&mvm->mutex);
1369
1370         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1371
1372         return ret;
1373 }
1374
1375 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1376                                         struct ieee80211_vif *vif)
1377 {
1378         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1379
1380         if (tfd_msk) {
1381                 /*
1382                  * mac80211 first removes all the stations of the vif and
1383                  * then removes the vif. When it removes a station it also
1384                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1385                  * of all the stations of this vif are closed, and the queues
1386                  * of these AMPDU sessions are properly closed.
1387                  * We still need to take care of the shared queues of the vif.
1388                  * Flush them here.
1389                  */
1390                 mutex_lock(&mvm->mutex);
1391                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1392                 mutex_unlock(&mvm->mutex);
1393
1394                 /*
1395                  * There are transports that buffer a few frames in the host.
1396                  * For these, the flush above isn't enough since while we were
1397                  * flushing, the transport might have sent more frames to the
1398                  * device. To solve this, wait here until the transport is
1399                  * empty. Technically, this could have replaced the flush
1400                  * above, but flush is much faster than draining. So flush
1401                  * first, and drain to make sure we have no frames in the
1402                  * transport anymore.
1403                  * If a station still had frames on the shared queues, it is
1404                  * already marked as draining, so to complete the draining, we
1405                  * just need to wait until the transport is empty.
1406                  */
1407                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1408         }
1409
1410         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1411                 /*
1412                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1413                  * We assume here that all the packets sent to the OFFCHANNEL
1414                  * queue are sent in ROC session.
1415                  */
1416                 flush_work(&mvm->roc_done_wk);
1417         } else {
1418                 /*
1419                  * By now, all the AC queues are empty. The AGG queues are
1420                  * empty too. We already got all the Tx responses for all the
1421                  * packets in the queues. The drain work can have been
1422                  * triggered. Flush it.
1423                  */
1424                 flush_work(&mvm->sta_drained_wk);
1425         }
1426 }
1427
1428 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1429                                          struct ieee80211_vif *vif)
1430 {
1431         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1432         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1433
1434         iwl_mvm_prepare_mac_removal(mvm, vif);
1435
1436         mutex_lock(&mvm->mutex);
1437
1438         if (mvm->bf_allowed_vif == mvmvif) {
1439                 mvm->bf_allowed_vif = NULL;
1440                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1441                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1442         }
1443
1444         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1445
1446         /*
1447          * For AP/GO interface, the tear down of the resources allocated to the
1448          * interface is be handled as part of the stop_ap flow.
1449          */
1450         if (vif->type == NL80211_IFTYPE_AP ||
1451             vif->type == NL80211_IFTYPE_ADHOC) {
1452 #ifdef CONFIG_NL80211_TESTMODE
1453                 if (vif == mvm->noa_vif) {
1454                         mvm->noa_vif = NULL;
1455                         mvm->noa_duration = 0;
1456                 }
1457 #endif
1458                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1459                 goto out_release;
1460         }
1461
1462         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1463                 mvm->p2p_device_vif = NULL;
1464                 iwl_mvm_rm_bcast_sta(mvm, vif);
1465                 iwl_mvm_binding_remove_vif(mvm, vif);
1466                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1467                 mvmvif->phy_ctxt = NULL;
1468         }
1469
1470         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1471                 mvm->vif_count--;
1472
1473         iwl_mvm_power_update_mac(mvm);
1474         iwl_mvm_mac_ctxt_remove(mvm, vif);
1475
1476 out_release:
1477         iwl_mvm_mac_ctxt_release(mvm, vif);
1478         mutex_unlock(&mvm->mutex);
1479 }
1480
1481 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1482 {
1483         return 0;
1484 }
1485
1486 struct iwl_mvm_mc_iter_data {
1487         struct iwl_mvm *mvm;
1488         int port_id;
1489 };
1490
1491 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1492                                       struct ieee80211_vif *vif)
1493 {
1494         struct iwl_mvm_mc_iter_data *data = _data;
1495         struct iwl_mvm *mvm = data->mvm;
1496         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1497         int ret, len;
1498
1499         /* if we don't have free ports, mcast frames will be dropped */
1500         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1501                 return;
1502
1503         if (vif->type != NL80211_IFTYPE_STATION ||
1504             !vif->bss_conf.assoc)
1505                 return;
1506
1507         cmd->port_id = data->port_id++;
1508         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1509         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1510
1511         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1512         if (ret)
1513                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1514 }
1515
1516 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1517 {
1518         struct iwl_mvm_mc_iter_data iter_data = {
1519                 .mvm = mvm,
1520         };
1521
1522         lockdep_assert_held(&mvm->mutex);
1523
1524         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1525                 return;
1526
1527         ieee80211_iterate_active_interfaces_atomic(
1528                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1529                 iwl_mvm_mc_iface_iterator, &iter_data);
1530 }
1531
1532 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1533                                      struct netdev_hw_addr_list *mc_list)
1534 {
1535         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1536         struct iwl_mcast_filter_cmd *cmd;
1537         struct netdev_hw_addr *addr;
1538         int addr_count;
1539         bool pass_all;
1540         int len;
1541
1542         addr_count = netdev_hw_addr_list_count(mc_list);
1543         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1544                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1545         if (pass_all)
1546                 addr_count = 0;
1547
1548         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1549         cmd = kzalloc(len, GFP_ATOMIC);
1550         if (!cmd)
1551                 return 0;
1552
1553         if (pass_all) {
1554                 cmd->pass_all = 1;
1555                 return (u64)(unsigned long)cmd;
1556         }
1557
1558         netdev_hw_addr_list_for_each(addr, mc_list) {
1559                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1560                                    cmd->count, addr->addr);
1561                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1562                        addr->addr, ETH_ALEN);
1563                 cmd->count++;
1564         }
1565
1566         return (u64)(unsigned long)cmd;
1567 }
1568
1569 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1570                                      unsigned int changed_flags,
1571                                      unsigned int *total_flags,
1572                                      u64 multicast)
1573 {
1574         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1575         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1576
1577         mutex_lock(&mvm->mutex);
1578
1579         /* replace previous configuration */
1580         kfree(mvm->mcast_filter_cmd);
1581         mvm->mcast_filter_cmd = cmd;
1582
1583         if (!cmd)
1584                 goto out;
1585
1586         iwl_mvm_recalc_multicast(mvm);
1587 out:
1588         mutex_unlock(&mvm->mutex);
1589         *total_flags = 0;
1590 }
1591
1592 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1593                                         struct ieee80211_vif *vif,
1594                                         unsigned int filter_flags,
1595                                         unsigned int changed_flags)
1596 {
1597         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1598
1599         /* We support only filter for probe requests */
1600         if (!(changed_flags & FIF_PROBE_REQ))
1601                 return;
1602
1603         /* Supported only for p2p client interfaces */
1604         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1605             !vif->p2p)
1606                 return;
1607
1608         mutex_lock(&mvm->mutex);
1609         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1610         mutex_unlock(&mvm->mutex);
1611 }
1612
1613 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1614 struct iwl_bcast_iter_data {
1615         struct iwl_mvm *mvm;
1616         struct iwl_bcast_filter_cmd *cmd;
1617         u8 current_filter;
1618 };
1619
1620 static void
1621 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1622                          const struct iwl_fw_bcast_filter *in_filter,
1623                          struct iwl_fw_bcast_filter *out_filter)
1624 {
1625         struct iwl_fw_bcast_filter_attr *attr;
1626         int i;
1627
1628         memcpy(out_filter, in_filter, sizeof(*out_filter));
1629
1630         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1631                 attr = &out_filter->attrs[i];
1632
1633                 if (!attr->mask)
1634                         break;
1635
1636                 switch (attr->reserved1) {
1637                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1638                         if (vif->bss_conf.arp_addr_cnt != 1) {
1639                                 attr->mask = 0;
1640                                 continue;
1641                         }
1642
1643                         attr->val = vif->bss_conf.arp_addr_list[0];
1644                         break;
1645                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1646                         attr->val = *(__be32 *)&vif->addr[2];
1647                         break;
1648                 default:
1649                         break;
1650                 }
1651                 attr->reserved1 = 0;
1652                 out_filter->num_attrs++;
1653         }
1654 }
1655
1656 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1657                                           struct ieee80211_vif *vif)
1658 {
1659         struct iwl_bcast_iter_data *data = _data;
1660         struct iwl_mvm *mvm = data->mvm;
1661         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1662         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1663         struct iwl_fw_bcast_mac *bcast_mac;
1664         int i;
1665
1666         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1667                 return;
1668
1669         bcast_mac = &cmd->macs[mvmvif->id];
1670
1671         /*
1672          * enable filtering only for associated stations, but not for P2P
1673          * Clients
1674          */
1675         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1676             !vif->bss_conf.assoc)
1677                 return;
1678
1679         bcast_mac->default_discard = 1;
1680
1681         /* copy all configured filters */
1682         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1683                 /*
1684                  * Make sure we don't exceed our filters limit.
1685                  * if there is still a valid filter to be configured,
1686                  * be on the safe side and just allow bcast for this mac.
1687                  */
1688                 if (WARN_ON_ONCE(data->current_filter >=
1689                                  ARRAY_SIZE(cmd->filters))) {
1690                         bcast_mac->default_discard = 0;
1691                         bcast_mac->attached_filters = 0;
1692                         break;
1693                 }
1694
1695                 iwl_mvm_set_bcast_filter(vif,
1696                                          &mvm->bcast_filters[i],
1697                                          &cmd->filters[data->current_filter]);
1698
1699                 /* skip current filter if it contains no attributes */
1700                 if (!cmd->filters[data->current_filter].num_attrs)
1701                         continue;
1702
1703                 /* attach the filter to current mac */
1704                 bcast_mac->attached_filters |=
1705                                 cpu_to_le16(BIT(data->current_filter));
1706
1707                 data->current_filter++;
1708         }
1709 }
1710
1711 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1712                                     struct iwl_bcast_filter_cmd *cmd)
1713 {
1714         struct iwl_bcast_iter_data iter_data = {
1715                 .mvm = mvm,
1716                 .cmd = cmd,
1717         };
1718
1719         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1720                 return false;
1721
1722         memset(cmd, 0, sizeof(*cmd));
1723         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1724         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1725
1726 #ifdef CONFIG_IWLWIFI_DEBUGFS
1727         /* use debugfs filters/macs if override is configured */
1728         if (mvm->dbgfs_bcast_filtering.override) {
1729                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1730                        sizeof(cmd->filters));
1731                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1732                        sizeof(cmd->macs));
1733                 return true;
1734         }
1735 #endif
1736
1737         /* if no filters are configured, do nothing */
1738         if (!mvm->bcast_filters)
1739                 return false;
1740
1741         /* configure and attach these filters for each associated sta vif */
1742         ieee80211_iterate_active_interfaces(
1743                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1744                 iwl_mvm_bcast_filter_iterator, &iter_data);
1745
1746         return true;
1747 }
1748
1749 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1750 {
1751         struct iwl_bcast_filter_cmd cmd;
1752
1753         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1754                 return 0;
1755
1756         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1757                 return 0;
1758
1759         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1760                                     sizeof(cmd), &cmd);
1761 }
1762 #else
1763 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1764 {
1765         return 0;
1766 }
1767 #endif
1768
1769 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1770                                     struct ieee80211_vif *vif)
1771 {
1772         struct iwl_mu_group_mgmt_cmd cmd = {};
1773
1774         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1775                WLAN_MEMBERSHIP_LEN);
1776         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1777                WLAN_USER_POSITION_LEN);
1778
1779         return iwl_mvm_send_cmd_pdu(mvm,
1780                                     WIDE_ID(DATA_PATH_GROUP,
1781                                             UPDATE_MU_GROUPS_CMD),
1782                                     0, sizeof(cmd), &cmd);
1783 }
1784
1785 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1786                                            struct ieee80211_vif *vif)
1787 {
1788         if (vif->mu_mimo_owner) {
1789                 struct iwl_mu_group_mgmt_notif *notif = _data;
1790
1791                 /*
1792                  * MU-MIMO Group Id action frame is little endian. We treat
1793                  * the data received from firmware as if it came from the
1794                  * action frame, so no conversion is needed.
1795                  */
1796                 ieee80211_update_mu_groups(vif,
1797                                            (u8 *)&notif->membership_status,
1798                                            (u8 *)&notif->user_position);
1799         }
1800 }
1801
1802 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1803                                struct iwl_rx_cmd_buffer *rxb)
1804 {
1805         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1806         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1807
1808         ieee80211_iterate_active_interfaces_atomic(
1809                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1810                         iwl_mvm_mu_mimo_iface_iterator, notif);
1811 }
1812
1813 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1814                                              struct ieee80211_vif *vif,
1815                                              struct ieee80211_bss_conf *bss_conf,
1816                                              u32 changes)
1817 {
1818         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1819         int ret;
1820
1821         /*
1822          * Re-calculate the tsf id, as the master-slave relations depend on the
1823          * beacon interval, which was not known when the station interface was
1824          * added.
1825          */
1826         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1827                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1828
1829         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1830             mvmvif->lqm_active)
1831                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1832                                      0, 0);
1833
1834         /*
1835          * If we're not associated yet, take the (new) BSSID before associating
1836          * so the firmware knows. If we're already associated, then use the old
1837          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1838          * branch for disassociation below.
1839          */
1840         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1841                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1842
1843         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1844         if (ret)
1845                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1846
1847         /* after sending it once, adopt mac80211 data */
1848         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1849         mvmvif->associated = bss_conf->assoc;
1850
1851         if (changes & BSS_CHANGED_ASSOC) {
1852                 if (bss_conf->assoc) {
1853                         /* clear statistics to get clean beacon counter */
1854                         iwl_mvm_request_statistics(mvm, true);
1855                         memset(&mvmvif->beacon_stats, 0,
1856                                sizeof(mvmvif->beacon_stats));
1857
1858                         /* add quota for this interface */
1859                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1860                         if (ret) {
1861                                 IWL_ERR(mvm, "failed to update quotas\n");
1862                                 return;
1863                         }
1864
1865                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1866                                      &mvm->status)) {
1867                                 /*
1868                                  * If we're restarting then the firmware will
1869                                  * obviously have lost synchronisation with
1870                                  * the AP. It will attempt to synchronise by
1871                                  * itself, but we can make it more reliable by
1872                                  * scheduling a session protection time event.
1873                                  *
1874                                  * The firmware needs to receive a beacon to
1875                                  * catch up with synchronisation, use 110% of
1876                                  * the beacon interval.
1877                                  *
1878                                  * Set a large maximum delay to allow for more
1879                                  * than a single interface.
1880                                  */
1881                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1882                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1883                                                         5 * dur, false);
1884                         }
1885
1886                         iwl_mvm_sf_update(mvm, vif, false);
1887                         iwl_mvm_power_vif_assoc(mvm, vif);
1888                         if (vif->p2p) {
1889                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1890                                 iwl_mvm_update_smps(mvm, vif,
1891                                                     IWL_MVM_SMPS_REQ_PROT,
1892                                                     IEEE80211_SMPS_DYNAMIC);
1893                         }
1894                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1895                         /*
1896                          * If update fails - SF might be running in associated
1897                          * mode while disassociated - which is forbidden.
1898                          */
1899                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1900                                   "Failed to update SF upon disassociation\n");
1901
1902                         /* remove AP station now that the MAC is unassoc */
1903                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1904                         if (ret)
1905                                 IWL_ERR(mvm, "failed to remove AP station\n");
1906
1907                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1908                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1909                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1910                         /* remove quota for this interface */
1911                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1912                         if (ret)
1913                                 IWL_ERR(mvm, "failed to update quotas\n");
1914
1915                         if (vif->p2p)
1916                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1917
1918                         /* this will take the cleared BSSID from bss_conf */
1919                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1920                         if (ret)
1921                                 IWL_ERR(mvm,
1922                                         "failed to update MAC %pM (clear after unassoc)\n",
1923                                         vif->addr);
1924                 }
1925
1926                 /*
1927                  * The firmware tracks the MU-MIMO group on its own.
1928                  * However, on HW restart we should restore this data.
1929                  */
1930                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1931                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
1932                         ret = iwl_mvm_update_mu_groups(mvm, vif);
1933                         if (ret)
1934                                 IWL_ERR(mvm,
1935                                         "failed to update VHT MU_MIMO groups\n");
1936                 }
1937
1938                 iwl_mvm_recalc_multicast(mvm);
1939                 iwl_mvm_configure_bcast_filter(mvm);
1940
1941                 /* reset rssi values */
1942                 mvmvif->bf_data.ave_beacon_signal = 0;
1943
1944                 iwl_mvm_bt_coex_vif_change(mvm);
1945                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1946                                     IEEE80211_SMPS_AUTOMATIC);
1947                 if (fw_has_capa(&mvm->fw->ucode_capa,
1948                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1949                         iwl_mvm_config_scan(mvm);
1950         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1951                 /*
1952                  * We received a beacon _after_ association so
1953                  * remove the session protection.
1954                  */
1955                 iwl_mvm_remove_time_event(mvm, mvmvif,
1956                                           &mvmvif->time_event_data);
1957         }
1958
1959         if (changes & BSS_CHANGED_BEACON_INFO) {
1960                 iwl_mvm_sf_update(mvm, vif, false);
1961                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1962         }
1963
1964         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
1965                        /*
1966                         * Send power command on every beacon change,
1967                         * because we may have not enabled beacon abort yet.
1968                         */
1969                        BSS_CHANGED_BEACON_INFO)) {
1970                 ret = iwl_mvm_power_update_mac(mvm);
1971                 if (ret)
1972                         IWL_ERR(mvm, "failed to update power mode\n");
1973         }
1974
1975         if (changes & BSS_CHANGED_TXPOWER) {
1976                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1977                                 bss_conf->txpower);
1978                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1979         }
1980
1981         if (changes & BSS_CHANGED_CQM) {
1982                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1983                 /* reset cqm events tracking */
1984                 mvmvif->bf_data.last_cqm_event = 0;
1985                 if (mvmvif->bf_data.bf_enabled) {
1986                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1987                         if (ret)
1988                                 IWL_ERR(mvm,
1989                                         "failed to update CQM thresholds\n");
1990                 }
1991         }
1992
1993         if (changes & BSS_CHANGED_ARP_FILTER) {
1994                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1995                 iwl_mvm_configure_bcast_filter(mvm);
1996         }
1997 }
1998
1999 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2000                                  struct ieee80211_vif *vif)
2001 {
2002         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2003         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2004         int ret;
2005
2006         /*
2007          * iwl_mvm_mac_ctxt_add() might read directly from the device
2008          * (the system time), so make sure it is available.
2009          */
2010         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2011         if (ret)
2012                 return ret;
2013
2014         mutex_lock(&mvm->mutex);
2015
2016         /* Send the beacon template */
2017         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2018         if (ret)
2019                 goto out_unlock;
2020
2021         /*
2022          * Re-calculate the tsf id, as the master-slave relations depend on the
2023          * beacon interval, which was not known when the AP interface was added.
2024          */
2025         if (vif->type == NL80211_IFTYPE_AP)
2026                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2027
2028         mvmvif->ap_assoc_sta_count = 0;
2029
2030         /* Add the mac context */
2031         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2032         if (ret)
2033                 goto out_unlock;
2034
2035         /* Perform the binding */
2036         ret = iwl_mvm_binding_add_vif(mvm, vif);
2037         if (ret)
2038                 goto out_remove;
2039
2040         /* Send the bcast station. At this stage the TBTT and DTIM time events
2041          * are added and applied to the scheduler */
2042         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2043         if (ret)
2044                 goto out_unbind;
2045
2046         /* must be set before quota calculations */
2047         mvmvif->ap_ibss_active = true;
2048
2049         /* power updated needs to be done before quotas */
2050         iwl_mvm_power_update_mac(mvm);
2051
2052         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2053         if (ret)
2054                 goto out_quota_failed;
2055
2056         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2057         if (vif->p2p && mvm->p2p_device_vif)
2058                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2059
2060         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2061
2062         iwl_mvm_bt_coex_vif_change(mvm);
2063
2064         /* we don't support TDLS during DCM */
2065         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2066                 iwl_mvm_teardown_tdls_peers(mvm);
2067
2068         goto out_unlock;
2069
2070 out_quota_failed:
2071         iwl_mvm_power_update_mac(mvm);
2072         mvmvif->ap_ibss_active = false;
2073         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2074 out_unbind:
2075         iwl_mvm_binding_remove_vif(mvm, vif);
2076 out_remove:
2077         iwl_mvm_mac_ctxt_remove(mvm, vif);
2078 out_unlock:
2079         mutex_unlock(&mvm->mutex);
2080         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2081         return ret;
2082 }
2083
2084 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2085                                  struct ieee80211_vif *vif)
2086 {
2087         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2088         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2089
2090         iwl_mvm_prepare_mac_removal(mvm, vif);
2091
2092         mutex_lock(&mvm->mutex);
2093
2094         /* Handle AP stop while in CSA */
2095         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2096                 iwl_mvm_remove_time_event(mvm, mvmvif,
2097                                           &mvmvif->time_event_data);
2098                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2099                 mvmvif->csa_countdown = false;
2100         }
2101
2102         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2103                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2104                 mvm->csa_tx_block_bcn_timeout = 0;
2105         }
2106
2107         mvmvif->ap_ibss_active = false;
2108         mvm->ap_last_beacon_gp2 = 0;
2109
2110         iwl_mvm_bt_coex_vif_change(mvm);
2111
2112         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2113
2114         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2115         if (vif->p2p && mvm->p2p_device_vif)
2116                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2117
2118         iwl_mvm_update_quotas(mvm, false, NULL);
2119         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2120         iwl_mvm_binding_remove_vif(mvm, vif);
2121
2122         iwl_mvm_power_update_mac(mvm);
2123
2124         iwl_mvm_mac_ctxt_remove(mvm, vif);
2125
2126         mutex_unlock(&mvm->mutex);
2127 }
2128
2129 static void
2130 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2131                                  struct ieee80211_vif *vif,
2132                                  struct ieee80211_bss_conf *bss_conf,
2133                                  u32 changes)
2134 {
2135         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2136
2137         /* Changes will be applied when the AP/IBSS is started */
2138         if (!mvmvif->ap_ibss_active)
2139                 return;
2140
2141         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2142                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2143             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2144                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2145
2146         /* Need to send a new beacon template to the FW */
2147         if (changes & BSS_CHANGED_BEACON &&
2148             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2149                 IWL_WARN(mvm, "Failed updating beacon data\n");
2150
2151         if (changes & BSS_CHANGED_TXPOWER) {
2152                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2153                                 bss_conf->txpower);
2154                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2155         }
2156 }
2157
2158 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2159                                      struct ieee80211_vif *vif,
2160                                      struct ieee80211_bss_conf *bss_conf,
2161                                      u32 changes)
2162 {
2163         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2164
2165         /*
2166          * iwl_mvm_bss_info_changed_station() might call
2167          * iwl_mvm_protect_session(), which reads directly from
2168          * the device (the system time), so make sure it is available.
2169          */
2170         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2171                 return;
2172
2173         mutex_lock(&mvm->mutex);
2174
2175         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2176                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2177
2178         switch (vif->type) {
2179         case NL80211_IFTYPE_STATION:
2180                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2181                 break;
2182         case NL80211_IFTYPE_AP:
2183         case NL80211_IFTYPE_ADHOC:
2184                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2185                 break;
2186         default:
2187                 /* shouldn't happen */
2188                 WARN_ON_ONCE(1);
2189         }
2190
2191         mutex_unlock(&mvm->mutex);
2192         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2193 }
2194
2195 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2196                                struct ieee80211_vif *vif,
2197                                struct ieee80211_scan_request *hw_req)
2198 {
2199         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2200         int ret;
2201
2202         if (hw_req->req.n_channels == 0 ||
2203             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2204                 return -EINVAL;
2205
2206         mutex_lock(&mvm->mutex);
2207         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2208         mutex_unlock(&mvm->mutex);
2209
2210         return ret;
2211 }
2212
2213 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2214                                        struct ieee80211_vif *vif)
2215 {
2216         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2217
2218         mutex_lock(&mvm->mutex);
2219
2220         /* Due to a race condition, it's possible that mac80211 asks
2221          * us to stop a hw_scan when it's already stopped.  This can
2222          * happen, for instance, if we stopped the scan ourselves,
2223          * called ieee80211_scan_completed() and the userspace called
2224          * cancel scan scan before ieee80211_scan_work() could run.
2225          * To handle that, simply return if the scan is not running.
2226         */
2227         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2228                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2229
2230         mutex_unlock(&mvm->mutex);
2231 }
2232
2233 static void
2234 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2235                                   struct ieee80211_sta *sta, u16 tids,
2236                                   int num_frames,
2237                                   enum ieee80211_frame_release_type reason,
2238                                   bool more_data)
2239 {
2240         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2241
2242         /* Called when we need to transmit (a) frame(s) from mac80211 */
2243
2244         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2245                                           tids, more_data, false);
2246 }
2247
2248 static void
2249 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2250                                     struct ieee80211_sta *sta, u16 tids,
2251                                     int num_frames,
2252                                     enum ieee80211_frame_release_type reason,
2253                                     bool more_data)
2254 {
2255         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2256
2257         /* Called when we need to transmit (a) frame(s) from agg queue */
2258
2259         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2260                                           tids, more_data, true);
2261 }
2262
2263 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2264                                    struct ieee80211_vif *vif,
2265                                    enum sta_notify_cmd cmd,
2266                                    struct ieee80211_sta *sta)
2267 {
2268         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2269         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2270         unsigned long txqs = 0, tids = 0;
2271         int tid;
2272
2273         spin_lock_bh(&mvmsta->lock);
2274         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2275                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2276
2277                 if (tid_data->state != IWL_AGG_ON &&
2278                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2279                         continue;
2280
2281                 __set_bit(tid_data->txq_id, &txqs);
2282
2283                 if (iwl_mvm_tid_queued(tid_data) == 0)
2284                         continue;
2285
2286                 __set_bit(tid, &tids);
2287         }
2288
2289         switch (cmd) {
2290         case STA_NOTIFY_SLEEP:
2291                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2292                         ieee80211_sta_block_awake(hw, sta, true);
2293
2294                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2295                         ieee80211_sta_set_buffered(sta, tid, true);
2296
2297                 if (txqs)
2298                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2299                 /*
2300                  * The fw updates the STA to be asleep. Tx packets on the Tx
2301                  * queues to this station will not be transmitted. The fw will
2302                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2303                  */
2304                 break;
2305         case STA_NOTIFY_AWAKE:
2306                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2307                         break;
2308
2309                 if (txqs)
2310                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2311                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2312                 break;
2313         default:
2314                 break;
2315         }
2316         spin_unlock_bh(&mvmsta->lock);
2317 }
2318
2319 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2320                                        struct ieee80211_vif *vif,
2321                                        struct ieee80211_sta *sta)
2322 {
2323         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2324         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2325
2326         /*
2327          * This is called before mac80211 does RCU synchronisation,
2328          * so here we already invalidate our internal RCU-protected
2329          * station pointer. The rest of the code will thus no longer
2330          * be able to find the station this way, and we don't rely
2331          * on further RCU synchronisation after the sta_state()
2332          * callback deleted the station.
2333          */
2334         mutex_lock(&mvm->mutex);
2335         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2336                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2337                                    ERR_PTR(-ENOENT));
2338
2339         mutex_unlock(&mvm->mutex);
2340 }
2341
2342 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2343                                 const u8 *bssid)
2344 {
2345         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2346                 return;
2347
2348         if (vif->p2p && !iwl_mvm_is_p2p_standalone_uapsd_supported(mvm)) {
2349                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2350                 return;
2351         }
2352
2353         if (!vif->p2p &&
2354             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2355                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2356                 return;
2357         }
2358
2359         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2360 }
2361
2362 static void
2363 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2364                            struct ieee80211_vif *vif, u8 *peer_addr,
2365                            enum nl80211_tdls_operation action)
2366 {
2367         struct iwl_fw_dbg_trigger_tlv *trig;
2368         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2369
2370         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2371                 return;
2372
2373         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2374         tdls_trig = (void *)trig->data;
2375         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2376                 return;
2377
2378         if (!(tdls_trig->action_bitmap & BIT(action)))
2379                 return;
2380
2381         if (tdls_trig->peer_mode &&
2382             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2383                 return;
2384
2385         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2386                                     "TDLS event occurred, peer %pM, action %d",
2387                                     peer_addr, action);
2388 }
2389
2390 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2391                                              struct iwl_mvm_sta *mvm_sta)
2392 {
2393         struct iwl_mvm_tid_data *tid_data;
2394         struct sk_buff *skb;
2395         int i;
2396
2397         spin_lock_bh(&mvm_sta->lock);
2398         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2399                 tid_data = &mvm_sta->tid_data[i];
2400                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2401                         ieee80211_free_txskb(mvm->hw, skb);
2402         }
2403         spin_unlock_bh(&mvm_sta->lock);
2404 }
2405
2406 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2407                                  struct ieee80211_vif *vif,
2408                                  struct ieee80211_sta *sta,
2409                                  enum ieee80211_sta_state old_state,
2410                                  enum ieee80211_sta_state new_state)
2411 {
2412         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2413         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2414         int ret;
2415
2416         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2417                            sta->addr, old_state, new_state);
2418
2419         /* this would be a mac80211 bug ... but don't crash */
2420         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2421                 return -EINVAL;
2422
2423         /* if a STA is being removed, reuse its ID */
2424         flush_work(&mvm->sta_drained_wk);
2425
2426         /*
2427          * If we are in a STA removal flow and in DQA mode:
2428          *
2429          * This is after the sync_rcu part, so the queues have already been
2430          * flushed. No more TXs on their way in mac80211's path, and no more in
2431          * the queues.
2432          * Also, we won't be getting any new TX frames for this station.
2433          * What we might have are deferred TX frames that need to be taken care
2434          * of.
2435          *
2436          * Drop any still-queued deferred-frame before removing the STA, and
2437          * make sure the worker is no longer handling frames for this STA.
2438          */
2439         if (old_state == IEEE80211_STA_NONE &&
2440             new_state == IEEE80211_STA_NOTEXIST &&
2441             iwl_mvm_is_dqa_supported(mvm)) {
2442                 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2443
2444                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2445                 flush_work(&mvm->add_stream_wk);
2446
2447                 /*
2448                  * No need to make sure deferred TX indication is off since the
2449                  * worker will already remove it if it was on
2450                  */
2451         }
2452
2453         mutex_lock(&mvm->mutex);
2454         if (old_state == IEEE80211_STA_NOTEXIST &&
2455             new_state == IEEE80211_STA_NONE) {
2456                 /*
2457                  * Firmware bug - it'll crash if the beacon interval is less
2458                  * than 16. We can't avoid connecting at all, so refuse the
2459                  * station state change, this will cause mac80211 to abandon
2460                  * attempts to connect to this AP, and eventually wpa_s will
2461                  * blacklist the AP...
2462                  */
2463                 if (vif->type == NL80211_IFTYPE_STATION &&
2464                     vif->bss_conf.beacon_int < 16) {
2465                         IWL_ERR(mvm,
2466                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2467                                 sta->addr, vif->bss_conf.beacon_int);
2468                         ret = -EINVAL;
2469                         goto out_unlock;
2470                 }
2471
2472                 if (sta->tdls &&
2473                     (vif->p2p ||
2474                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2475                                                 IWL_MVM_TDLS_STA_COUNT ||
2476                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2477                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2478                         ret = -EBUSY;
2479                         goto out_unlock;
2480                 }
2481
2482                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2483                 if (sta->tdls && ret == 0) {
2484                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2485                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2486                                                    NL80211_TDLS_SETUP);
2487                 }
2488         } else if (old_state == IEEE80211_STA_NONE &&
2489                    new_state == IEEE80211_STA_AUTH) {
2490                 /*
2491                  * EBS may be disabled due to previous failures reported by FW.
2492                  * Reset EBS status here assuming environment has been changed.
2493                  */
2494                 mvm->last_ebs_successful = true;
2495                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2496                 ret = 0;
2497         } else if (old_state == IEEE80211_STA_AUTH &&
2498                    new_state == IEEE80211_STA_ASSOC) {
2499                 if (vif->type == NL80211_IFTYPE_AP) {
2500                         mvmvif->ap_assoc_sta_count++;
2501                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2502                 }
2503                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2504                 if (ret == 0)
2505                         iwl_mvm_rs_rate_init(mvm, sta,
2506                                              mvmvif->phy_ctxt->channel->band,
2507                                              true);
2508         } else if (old_state == IEEE80211_STA_ASSOC &&
2509                    new_state == IEEE80211_STA_AUTHORIZED) {
2510
2511                 /* we don't support TDLS during DCM */
2512                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2513                         iwl_mvm_teardown_tdls_peers(mvm);
2514
2515                 if (sta->tdls)
2516                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2517                                                    NL80211_TDLS_ENABLE_LINK);
2518
2519                 /* enable beacon filtering */
2520                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2521                 ret = 0;
2522         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2523                    new_state == IEEE80211_STA_ASSOC) {
2524                 /* disable beacon filtering */
2525                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2526                 ret = 0;
2527         } else if (old_state == IEEE80211_STA_ASSOC &&
2528                    new_state == IEEE80211_STA_AUTH) {
2529                 if (vif->type == NL80211_IFTYPE_AP) {
2530                         mvmvif->ap_assoc_sta_count--;
2531                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2532                 }
2533                 ret = 0;
2534         } else if (old_state == IEEE80211_STA_AUTH &&
2535                    new_state == IEEE80211_STA_NONE) {
2536                 ret = 0;
2537         } else if (old_state == IEEE80211_STA_NONE &&
2538                    new_state == IEEE80211_STA_NOTEXIST) {
2539                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2540                 if (sta->tdls) {
2541                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2542                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2543                                                    NL80211_TDLS_DISABLE_LINK);
2544                 }
2545         } else {
2546                 ret = -EIO;
2547         }
2548  out_unlock:
2549         mutex_unlock(&mvm->mutex);
2550
2551         if (sta->tdls && ret == 0) {
2552                 if (old_state == IEEE80211_STA_NOTEXIST &&
2553                     new_state == IEEE80211_STA_NONE)
2554                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2555                 else if (old_state == IEEE80211_STA_NONE &&
2556                          new_state == IEEE80211_STA_NOTEXIST)
2557                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2558         }
2559
2560         return ret;
2561 }
2562
2563 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2564 {
2565         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2566
2567         mvm->rts_threshold = value;
2568
2569         return 0;
2570 }
2571
2572 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2573                                   struct ieee80211_vif *vif,
2574                                   struct ieee80211_sta *sta, u32 changed)
2575 {
2576         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2577
2578         if (vif->type == NL80211_IFTYPE_STATION &&
2579             changed & IEEE80211_RC_NSS_CHANGED)
2580                 iwl_mvm_sf_update(mvm, vif, false);
2581 }
2582
2583 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2584                                struct ieee80211_vif *vif, u16 ac,
2585                                const struct ieee80211_tx_queue_params *params)
2586 {
2587         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2588         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2589
2590         mvmvif->queue_params[ac] = *params;
2591
2592         /*
2593          * No need to update right away, we'll get BSS_CHANGED_QOS
2594          * The exception is P2P_DEVICE interface which needs immediate update.
2595          */
2596         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2597                 int ret;
2598
2599                 mutex_lock(&mvm->mutex);
2600                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2601                 mutex_unlock(&mvm->mutex);
2602                 return ret;
2603         }
2604         return 0;
2605 }
2606
2607 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2608                                       struct ieee80211_vif *vif)
2609 {
2610         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2611         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2612         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2613
2614         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2615                 return;
2616
2617         /*
2618          * iwl_mvm_protect_session() reads directly from the device
2619          * (the system time), so make sure it is available.
2620          */
2621         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2622                 return;
2623
2624         mutex_lock(&mvm->mutex);
2625         /* Try really hard to protect the session and hear a beacon */
2626         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2627         mutex_unlock(&mvm->mutex);
2628
2629         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2630 }
2631
2632 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2633                                         struct ieee80211_vif *vif,
2634                                         struct cfg80211_sched_scan_request *req,
2635                                         struct ieee80211_scan_ies *ies)
2636 {
2637         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2638
2639         int ret;
2640
2641         mutex_lock(&mvm->mutex);
2642
2643         if (!vif->bss_conf.idle) {
2644                 ret = -EBUSY;
2645                 goto out;
2646         }
2647
2648         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2649
2650 out:
2651         mutex_unlock(&mvm->mutex);
2652         return ret;
2653 }
2654
2655 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2656                                        struct ieee80211_vif *vif)
2657 {
2658         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2659         int ret;
2660
2661         mutex_lock(&mvm->mutex);
2662
2663         /* Due to a race condition, it's possible that mac80211 asks
2664          * us to stop a sched_scan when it's already stopped.  This
2665          * can happen, for instance, if we stopped the scan ourselves,
2666          * called ieee80211_sched_scan_stopped() and the userspace called
2667          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2668          * could run.  To handle this, simply return if the scan is
2669          * not running.
2670         */
2671         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2672                 mutex_unlock(&mvm->mutex);
2673                 return 0;
2674         }
2675
2676         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2677         mutex_unlock(&mvm->mutex);
2678         iwl_mvm_wait_for_async_handlers(mvm);
2679
2680         return ret;
2681 }
2682
2683 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2684                                enum set_key_cmd cmd,
2685                                struct ieee80211_vif *vif,
2686                                struct ieee80211_sta *sta,
2687                                struct ieee80211_key_conf *key)
2688 {
2689         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2690         struct iwl_mvm_sta *mvmsta;
2691         struct iwl_mvm_key_pn *ptk_pn;
2692         int keyidx = key->keyidx;
2693         int ret;
2694         u8 key_offset;
2695
2696         if (iwlwifi_mod_params.sw_crypto) {
2697                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2698                 return -EOPNOTSUPP;
2699         }
2700
2701         switch (key->cipher) {
2702         case WLAN_CIPHER_SUITE_TKIP:
2703                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2704                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2705                 break;
2706         case WLAN_CIPHER_SUITE_CCMP:
2707                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2708                 break;
2709         case WLAN_CIPHER_SUITE_AES_CMAC:
2710                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2711                 break;
2712         case WLAN_CIPHER_SUITE_WEP40:
2713         case WLAN_CIPHER_SUITE_WEP104:
2714                 /* For non-client mode, only use WEP keys for TX as we probably
2715                  * don't have a station yet anyway and would then have to keep
2716                  * track of the keys, linking them to each of the clients/peers
2717                  * as they appear. For now, don't do that, for performance WEP
2718                  * offload doesn't really matter much, but we need it for some
2719                  * other offload features in client mode.
2720                  */
2721                 if (vif->type != NL80211_IFTYPE_STATION)
2722                         return 0;
2723                 break;
2724         default:
2725                 /* currently FW supports only one optional cipher scheme */
2726                 if (hw->n_cipher_schemes &&
2727                     hw->cipher_schemes->cipher == key->cipher)
2728                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2729                 else
2730                         return -EOPNOTSUPP;
2731         }
2732
2733         mutex_lock(&mvm->mutex);
2734
2735         switch (cmd) {
2736         case SET_KEY:
2737                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2738                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2739                         /*
2740                          * GTK on AP interface is a TX-only key, return 0;
2741                          * on IBSS they're per-station and because we're lazy
2742                          * we don't support them for RX, so do the same.
2743                          * CMAC in AP/IBSS modes must be done in software.
2744                          */
2745                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
2746                                 ret = -EOPNOTSUPP;
2747                         else
2748                                 ret = 0;
2749                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2750                         break;
2751                 }
2752
2753                 /* During FW restart, in order to restore the state as it was,
2754                  * don't try to reprogram keys we previously failed for.
2755                  */
2756                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2757                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2758                         IWL_DEBUG_MAC80211(mvm,
2759                                            "skip invalid idx key programming during restart\n");
2760                         ret = 0;
2761                         break;
2762                 }
2763
2764                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2765                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2766                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2767                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2768                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2769                         struct ieee80211_key_seq seq;
2770                         int tid, q;
2771
2772                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2773                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2774                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2775                                          mvm->trans->num_rx_queues *
2776                                                 sizeof(ptk_pn->q[0]),
2777                                          GFP_KERNEL);
2778                         if (!ptk_pn) {
2779                                 ret = -ENOMEM;
2780                                 break;
2781                         }
2782
2783                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2784                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2785                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2786                                         memcpy(ptk_pn->q[q].pn[tid],
2787                                                seq.ccmp.pn,
2788                                                IEEE80211_CCMP_PN_LEN);
2789                         }
2790
2791                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2792                 }
2793
2794                 /* in HW restart reuse the index, otherwise request a new one */
2795                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2796                         key_offset = key->hw_key_idx;
2797                 else
2798                         key_offset = STA_KEY_IDX_INVALID;
2799
2800                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2801                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2802                 if (ret) {
2803                         IWL_WARN(mvm, "set key failed\n");
2804                         /*
2805                          * can't add key for RX, but we don't need it
2806                          * in the device for TX so still return 0
2807                          */
2808                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2809                         ret = 0;
2810                 }
2811
2812                 break;
2813         case DISABLE_KEY:
2814                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2815                         ret = 0;
2816                         break;
2817                 }
2818
2819                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2820                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2821                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2822                      key->cipher == WLAN_CIPHER_SUITE_GCMP)) {
2823                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2824                         ptk_pn = rcu_dereference_protected(
2825                                                 mvmsta->ptk_pn[keyidx],
2826                                                 lockdep_is_held(&mvm->mutex));
2827                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2828                         if (ptk_pn)
2829                                 kfree_rcu(ptk_pn, rcu_head);
2830                 }
2831
2832                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2833                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2834                 break;
2835         default:
2836                 ret = -EINVAL;
2837         }
2838
2839         mutex_unlock(&mvm->mutex);
2840         return ret;
2841 }
2842
2843 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2844                                         struct ieee80211_vif *vif,
2845                                         struct ieee80211_key_conf *keyconf,
2846                                         struct ieee80211_sta *sta,
2847                                         u32 iv32, u16 *phase1key)
2848 {
2849         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2850
2851         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2852                 return;
2853
2854         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2855 }
2856
2857
2858 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2859                                struct iwl_rx_packet *pkt, void *data)
2860 {
2861         struct iwl_mvm *mvm =
2862                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2863         struct iwl_hs20_roc_res *resp;
2864         int resp_len = iwl_rx_packet_payload_len(pkt);
2865         struct iwl_mvm_time_event_data *te_data = data;
2866
2867         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2868                 return true;
2869
2870         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2871                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2872                 return true;
2873         }
2874
2875         resp = (void *)pkt->data;
2876
2877         IWL_DEBUG_TE(mvm,
2878                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2879                      resp->status, resp->event_unique_id);
2880
2881         te_data->uid = le32_to_cpu(resp->event_unique_id);
2882         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2883                      te_data->uid);
2884
2885         spin_lock_bh(&mvm->time_event_lock);
2886         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2887         spin_unlock_bh(&mvm->time_event_lock);
2888
2889         return true;
2890 }
2891
2892 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
2893 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
2894 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
2895 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
2896 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
2897 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2898                                     struct ieee80211_channel *channel,
2899                                     struct ieee80211_vif *vif,
2900                                     int duration)
2901 {
2902         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2903         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2904         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2905         static const u16 time_event_response[] = { HOT_SPOT_CMD };
2906         struct iwl_notification_wait wait_time_event;
2907         u32 dtim_interval = vif->bss_conf.dtim_period *
2908                 vif->bss_conf.beacon_int;
2909         u32 req_dur, delay;
2910         struct iwl_hs20_roc_req aux_roc_req = {
2911                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2912                 .id_and_color =
2913                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2914                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2915                 /* Set the channel info data */
2916                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
2917                         PHY_BAND_24 : PHY_BAND_5,
2918                 .channel_info.channel = channel->hw_value,
2919                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2920                 /* Set the time and duration */
2921                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2922          };
2923
2924         delay = AUX_ROC_MIN_DELAY;
2925         req_dur = MSEC_TO_TU(duration);
2926
2927         /*
2928          * If we are associated we want the delay time to be at least one
2929          * dtim interval so that the FW can wait until after the DTIM and
2930          * then start the time event, this will potentially allow us to
2931          * remain off-channel for the max duration.
2932          * Since we want to use almost a whole dtim interval we would also
2933          * like the delay to be for 2-3 dtim intervals, in case there are
2934          * other time events with higher priority.
2935          */
2936         if (vif->bss_conf.assoc) {
2937                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
2938                 /* We cannot remain off-channel longer than the DTIM interval */
2939                 if (dtim_interval <= req_dur) {
2940                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
2941                         if (req_dur <= AUX_ROC_MIN_DURATION)
2942                                 req_dur = dtim_interval -
2943                                         AUX_ROC_MIN_SAFETY_BUFFER;
2944                 }
2945         }
2946
2947         aux_roc_req.duration = cpu_to_le32(req_dur);
2948         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
2949
2950         IWL_DEBUG_TE(mvm,
2951                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
2952                      channel->hw_value, req_dur, duration, delay,
2953                      dtim_interval);
2954         /* Set the node address */
2955         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2956
2957         lockdep_assert_held(&mvm->mutex);
2958
2959         spin_lock_bh(&mvm->time_event_lock);
2960
2961         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2962                 spin_unlock_bh(&mvm->time_event_lock);
2963                 return -EIO;
2964         }
2965
2966         te_data->vif = vif;
2967         te_data->duration = duration;
2968         te_data->id = HOT_SPOT_CMD;
2969
2970         spin_unlock_bh(&mvm->time_event_lock);
2971
2972         /*
2973          * Use a notification wait, which really just processes the
2974          * command response and doesn't wait for anything, in order
2975          * to be able to process the response and get the UID inside
2976          * the RX path. Using CMD_WANT_SKB doesn't work because it
2977          * stores the buffer and then wakes up this thread, by which
2978          * time another notification (that the time event started)
2979          * might already be processed unsuccessfully.
2980          */
2981         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2982                                    time_event_response,
2983                                    ARRAY_SIZE(time_event_response),
2984                                    iwl_mvm_rx_aux_roc, te_data);
2985
2986         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2987                                    &aux_roc_req);
2988
2989         if (res) {
2990                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2991                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2992                 goto out_clear_te;
2993         }
2994
2995         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2996         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2997         /* should never fail */
2998         WARN_ON_ONCE(res);
2999
3000         if (res) {
3001  out_clear_te:
3002                 spin_lock_bh(&mvm->time_event_lock);
3003                 iwl_mvm_te_clear_data(mvm, te_data);
3004                 spin_unlock_bh(&mvm->time_event_lock);
3005         }
3006
3007         return res;
3008 }
3009
3010 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3011                        struct ieee80211_vif *vif,
3012                        struct ieee80211_channel *channel,
3013                        int duration,
3014                        enum ieee80211_roc_type type)
3015 {
3016         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3017         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3018         struct cfg80211_chan_def chandef;
3019         struct iwl_mvm_phy_ctxt *phy_ctxt;
3020         int ret, i;
3021
3022         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3023                            duration, type);
3024
3025         flush_work(&mvm->roc_done_wk);
3026
3027         mutex_lock(&mvm->mutex);
3028
3029         switch (vif->type) {
3030         case NL80211_IFTYPE_STATION:
3031                 if (fw_has_capa(&mvm->fw->ucode_capa,
3032                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3033                         /* Use aux roc framework (HS20) */
3034                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3035                                                        vif, duration);
3036                         goto out_unlock;
3037                 }
3038                 IWL_ERR(mvm, "hotspot not supported\n");
3039                 ret = -EINVAL;
3040                 goto out_unlock;
3041         case NL80211_IFTYPE_P2P_DEVICE:
3042                 /* handle below */
3043                 break;
3044         default:
3045                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3046                 ret = -EINVAL;
3047                 goto out_unlock;
3048         }
3049
3050         for (i = 0; i < NUM_PHY_CTX; i++) {
3051                 phy_ctxt = &mvm->phy_ctxts[i];
3052                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3053                         continue;
3054
3055                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3056                         /*
3057                          * Unbind the P2P_DEVICE from the current PHY context,
3058                          * and if the PHY context is not used remove it.
3059                          */
3060                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3061                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3062                                 goto out_unlock;
3063
3064                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3065
3066                         /* Bind the P2P_DEVICE to the current PHY Context */
3067                         mvmvif->phy_ctxt = phy_ctxt;
3068
3069                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3070                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3071                                 goto out_unlock;
3072
3073                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3074                         goto schedule_time_event;
3075                 }
3076         }
3077
3078         /* Need to update the PHY context only if the ROC channel changed */
3079         if (channel == mvmvif->phy_ctxt->channel)
3080                 goto schedule_time_event;
3081
3082         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3083
3084         /*
3085          * Change the PHY context configuration as it is currently referenced
3086          * only by the P2P Device MAC
3087          */
3088         if (mvmvif->phy_ctxt->ref == 1) {
3089                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3090                                                &chandef, 1, 1);
3091                 if (ret)
3092                         goto out_unlock;
3093         } else {
3094                 /*
3095                  * The PHY context is shared with other MACs. Need to remove the
3096                  * P2P Device from the binding, allocate an new PHY context and
3097                  * create a new binding
3098                  */
3099                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3100                 if (!phy_ctxt) {
3101                         ret = -ENOSPC;
3102                         goto out_unlock;
3103                 }
3104
3105                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3106                                                1, 1);
3107                 if (ret) {
3108                         IWL_ERR(mvm, "Failed to change PHY context\n");
3109                         goto out_unlock;
3110                 }
3111
3112                 /* Unbind the P2P_DEVICE from the current PHY context */
3113                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3114                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3115                         goto out_unlock;
3116
3117                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3118
3119                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3120                 mvmvif->phy_ctxt = phy_ctxt;
3121
3122                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3123                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3124                         goto out_unlock;
3125
3126                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3127         }
3128
3129 schedule_time_event:
3130         /* Schedule the time events */
3131         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3132
3133 out_unlock:
3134         mutex_unlock(&mvm->mutex);
3135         IWL_DEBUG_MAC80211(mvm, "leave\n");
3136         return ret;
3137 }
3138
3139 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3140 {
3141         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3142
3143         IWL_DEBUG_MAC80211(mvm, "enter\n");
3144
3145         mutex_lock(&mvm->mutex);
3146         iwl_mvm_stop_roc(mvm);
3147         mutex_unlock(&mvm->mutex);
3148
3149         IWL_DEBUG_MAC80211(mvm, "leave\n");
3150         return 0;
3151 }
3152
3153 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3154                                  struct ieee80211_chanctx_conf *ctx)
3155 {
3156         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3157         struct iwl_mvm_phy_ctxt *phy_ctxt;
3158         int ret;
3159
3160         lockdep_assert_held(&mvm->mutex);
3161
3162         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3163
3164         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3165         if (!phy_ctxt) {
3166                 ret = -ENOSPC;
3167                 goto out;
3168         }
3169
3170         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3171                                        ctx->rx_chains_static,
3172                                        ctx->rx_chains_dynamic);
3173         if (ret) {
3174                 IWL_ERR(mvm, "Failed to add PHY context\n");
3175                 goto out;
3176         }
3177
3178         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3179         *phy_ctxt_id = phy_ctxt->id;
3180 out:
3181         return ret;
3182 }
3183
3184 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3185                                struct ieee80211_chanctx_conf *ctx)
3186 {
3187         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3188         int ret;
3189
3190         mutex_lock(&mvm->mutex);
3191         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3192         mutex_unlock(&mvm->mutex);
3193
3194         return ret;
3195 }
3196
3197 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3198                                      struct ieee80211_chanctx_conf *ctx)
3199 {
3200         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3201         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3202
3203         lockdep_assert_held(&mvm->mutex);
3204
3205         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3206 }
3207
3208 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3209                                    struct ieee80211_chanctx_conf *ctx)
3210 {
3211         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3212
3213         mutex_lock(&mvm->mutex);
3214         __iwl_mvm_remove_chanctx(mvm, ctx);
3215         mutex_unlock(&mvm->mutex);
3216 }
3217
3218 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3219                                    struct ieee80211_chanctx_conf *ctx,
3220                                    u32 changed)
3221 {
3222         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3223         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3224         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3225
3226         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3227                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3228                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3229                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3230                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3231                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3232                       phy_ctxt->ref, changed))
3233                 return;
3234
3235         mutex_lock(&mvm->mutex);
3236         iwl_mvm_bt_coex_vif_change(mvm);
3237         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3238                                  ctx->rx_chains_static,
3239                                  ctx->rx_chains_dynamic);
3240         mutex_unlock(&mvm->mutex);
3241 }
3242
3243 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3244                                         struct ieee80211_vif *vif,
3245                                         struct ieee80211_chanctx_conf *ctx,
3246                                         bool switching_chanctx)
3247 {
3248         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3249         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3250         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3251         int ret;
3252
3253         lockdep_assert_held(&mvm->mutex);
3254
3255         mvmvif->phy_ctxt = phy_ctxt;
3256
3257         switch (vif->type) {
3258         case NL80211_IFTYPE_AP:
3259                 /* only needed if we're switching chanctx (i.e. during CSA) */
3260                 if (switching_chanctx) {
3261                         mvmvif->ap_ibss_active = true;
3262                         break;
3263                 }
3264         case NL80211_IFTYPE_ADHOC:
3265                 /*
3266                  * The AP binding flow is handled as part of the start_ap flow
3267                  * (in bss_info_changed), similarly for IBSS.
3268                  */
3269                 ret = 0;
3270                 goto out;
3271         case NL80211_IFTYPE_STATION:
3272                 break;
3273         case NL80211_IFTYPE_MONITOR:
3274                 /* always disable PS when a monitor interface is active */
3275                 mvmvif->ps_disabled = true;
3276                 break;
3277         default:
3278                 ret = -EINVAL;
3279                 goto out;
3280         }
3281
3282         ret = iwl_mvm_binding_add_vif(mvm, vif);
3283         if (ret)
3284                 goto out;
3285
3286         /*
3287          * Power state must be updated before quotas,
3288          * otherwise fw will complain.
3289          */
3290         iwl_mvm_power_update_mac(mvm);
3291
3292         /* Setting the quota at this stage is only required for monitor
3293          * interfaces. For the other types, the bss_info changed flow
3294          * will handle quota settings.
3295          */
3296         if (vif->type == NL80211_IFTYPE_MONITOR) {
3297                 mvmvif->monitor_active = true;
3298                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3299                 if (ret)
3300                         goto out_remove_binding;
3301
3302                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3303                 if (ret)
3304                         goto out_remove_binding;
3305
3306         }
3307
3308         /* Handle binding during CSA */
3309         if (vif->type == NL80211_IFTYPE_AP) {
3310                 iwl_mvm_update_quotas(mvm, false, NULL);
3311                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3312         }
3313
3314         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3315                 u32 duration = 2 * vif->bss_conf.beacon_int;
3316
3317                 /* iwl_mvm_protect_session() reads directly from the
3318                  * device (the system time), so make sure it is
3319                  * available.
3320                  */
3321                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3322                 if (ret)
3323                         goto out_remove_binding;
3324
3325                 /* Protect the session to make sure we hear the first
3326                  * beacon on the new channel.
3327                  */
3328                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3329                                         vif->bss_conf.beacon_int / 2,
3330                                         true);
3331
3332                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3333
3334                 iwl_mvm_update_quotas(mvm, false, NULL);
3335         }
3336
3337         goto out;
3338
3339 out_remove_binding:
3340         iwl_mvm_binding_remove_vif(mvm, vif);
3341         iwl_mvm_power_update_mac(mvm);
3342 out:
3343         if (ret)
3344                 mvmvif->phy_ctxt = NULL;
3345         return ret;
3346 }
3347 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3348                                       struct ieee80211_vif *vif,
3349                                       struct ieee80211_chanctx_conf *ctx)
3350 {
3351         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3352         int ret;
3353
3354         mutex_lock(&mvm->mutex);
3355         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3356         mutex_unlock(&mvm->mutex);
3357
3358         return ret;
3359 }
3360
3361 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3362                                            struct ieee80211_vif *vif,
3363                                            struct ieee80211_chanctx_conf *ctx,
3364                                            bool switching_chanctx)
3365 {
3366         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3367         struct ieee80211_vif *disabled_vif = NULL;
3368
3369         lockdep_assert_held(&mvm->mutex);
3370
3371         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3372
3373         switch (vif->type) {
3374         case NL80211_IFTYPE_ADHOC:
3375                 goto out;
3376         case NL80211_IFTYPE_MONITOR:
3377                 mvmvif->monitor_active = false;
3378                 mvmvif->ps_disabled = false;
3379                 iwl_mvm_rm_snif_sta(mvm, vif);
3380                 break;
3381         case NL80211_IFTYPE_AP:
3382                 /* This part is triggered only during CSA */
3383                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3384                         goto out;
3385
3386                 mvmvif->csa_countdown = false;
3387
3388                 /* Set CS bit on all the stations */
3389                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3390
3391                 /* Save blocked iface, the timeout is set on the next beacon */
3392                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3393
3394                 mvmvif->ap_ibss_active = false;
3395                 break;
3396         case NL80211_IFTYPE_STATION:
3397                 if (!switching_chanctx)
3398                         break;
3399
3400                 disabled_vif = vif;
3401
3402                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3403                 break;
3404         default:
3405                 break;
3406         }
3407
3408         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3409         iwl_mvm_binding_remove_vif(mvm, vif);
3410
3411 out:
3412         mvmvif->phy_ctxt = NULL;
3413         iwl_mvm_power_update_mac(mvm);
3414 }
3415
3416 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3417                                          struct ieee80211_vif *vif,
3418                                          struct ieee80211_chanctx_conf *ctx)
3419 {
3420         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3421
3422         mutex_lock(&mvm->mutex);
3423         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3424         mutex_unlock(&mvm->mutex);
3425 }
3426
3427 static int
3428 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3429                                 struct ieee80211_vif_chanctx_switch *vifs)
3430 {
3431         int ret;
3432
3433         mutex_lock(&mvm->mutex);
3434         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3435         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3436
3437         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3438         if (ret) {
3439                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3440                 goto out_reassign;
3441         }
3442
3443         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3444                                            true);
3445         if (ret) {
3446                 IWL_ERR(mvm,
3447                         "failed to assign new_ctx during channel switch\n");
3448                 goto out_remove;
3449         }
3450
3451         /* we don't support TDLS during DCM - can be caused by channel switch */
3452         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3453                 iwl_mvm_teardown_tdls_peers(mvm);
3454
3455         goto out;
3456
3457 out_remove:
3458         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3459
3460 out_reassign:
3461         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3462                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3463                 goto out_restart;
3464         }
3465
3466         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3467                                          true)) {
3468                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3469                 goto out_restart;
3470         }
3471
3472         goto out;
3473
3474 out_restart:
3475         /* things keep failing, better restart the hw */
3476         iwl_mvm_nic_restart(mvm, false);
3477
3478 out:
3479         mutex_unlock(&mvm->mutex);
3480
3481         return ret;
3482 }
3483
3484 static int
3485 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3486                                     struct ieee80211_vif_chanctx_switch *vifs)
3487 {
3488         int ret;
3489
3490         mutex_lock(&mvm->mutex);
3491         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3492
3493         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3494                                            true);
3495         if (ret) {
3496                 IWL_ERR(mvm,
3497                         "failed to assign new_ctx during channel switch\n");
3498                 goto out_reassign;
3499         }
3500
3501         goto out;
3502
3503 out_reassign:
3504         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3505                                          true)) {
3506                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3507                 goto out_restart;
3508         }
3509
3510         goto out;
3511
3512 out_restart:
3513         /* things keep failing, better restart the hw */
3514         iwl_mvm_nic_restart(mvm, false);
3515
3516 out:
3517         mutex_unlock(&mvm->mutex);
3518
3519         return ret;
3520 }
3521
3522 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3523                                       struct ieee80211_vif_chanctx_switch *vifs,
3524                                       int n_vifs,
3525                                       enum ieee80211_chanctx_switch_mode mode)
3526 {
3527         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3528         int ret;
3529
3530         /* we only support a single-vif right now */
3531         if (n_vifs > 1)
3532                 return -EOPNOTSUPP;
3533
3534         switch (mode) {
3535         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3536                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3537                 break;
3538         case CHANCTX_SWMODE_REASSIGN_VIF:
3539                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3540                 break;
3541         default:
3542                 ret = -EOPNOTSUPP;
3543                 break;
3544         }
3545
3546         return ret;
3547 }
3548
3549 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3550                            struct ieee80211_sta *sta,
3551                            bool set)
3552 {
3553         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3554         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3555
3556         if (!mvm_sta || !mvm_sta->vif) {
3557                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3558                 return -EINVAL;
3559         }
3560
3561         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3562 }
3563
3564 #ifdef CONFIG_NL80211_TESTMODE
3565 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3566         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3567         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3568         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3569 };
3570
3571 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3572                                       struct ieee80211_vif *vif,
3573                                       void *data, int len)
3574 {
3575         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3576         int err;
3577         u32 noa_duration;
3578
3579         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3580         if (err)
3581                 return err;
3582
3583         if (!tb[IWL_MVM_TM_ATTR_CMD])
3584                 return -EINVAL;
3585
3586         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3587         case IWL_MVM_TM_CMD_SET_NOA:
3588                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3589                     !vif->bss_conf.enable_beacon ||
3590                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3591                         return -EINVAL;
3592
3593                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3594                 if (noa_duration >= vif->bss_conf.beacon_int)
3595                         return -EINVAL;
3596
3597                 mvm->noa_duration = noa_duration;
3598                 mvm->noa_vif = vif;
3599
3600                 return iwl_mvm_update_quotas(mvm, false, NULL);
3601         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3602                 /* must be associated client vif - ignore authorized */
3603                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3604                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3605                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3606                         return -EINVAL;
3607
3608                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3609                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3610                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3611         }
3612
3613         return -EOPNOTSUPP;
3614 }
3615
3616 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3617                                     struct ieee80211_vif *vif,
3618                                     void *data, int len)
3619 {
3620         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3621         int err;
3622
3623         mutex_lock(&mvm->mutex);
3624         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3625         mutex_unlock(&mvm->mutex);
3626
3627         return err;
3628 }
3629 #endif
3630
3631 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3632                                    struct ieee80211_vif *vif,
3633                                    struct ieee80211_channel_switch *chsw)
3634 {
3635         /* By implementing this operation, we prevent mac80211 from
3636          * starting its own channel switch timer, so that we can call
3637          * ieee80211_chswitch_done() ourselves at the right time
3638          * (which is when the absence time event starts).
3639          */
3640
3641         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3642                            "dummy channel switch op\n");
3643 }
3644
3645 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3646                                       struct ieee80211_vif *vif,
3647                                       struct ieee80211_channel_switch *chsw)
3648 {
3649         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3650         struct ieee80211_vif *csa_vif;
3651         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3652         u32 apply_time;
3653         int ret;
3654
3655         mutex_lock(&mvm->mutex);
3656
3657         mvmvif->csa_failed = false;
3658
3659         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3660                            chsw->chandef.center_freq1);
3661
3662         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3663
3664         switch (vif->type) {
3665         case NL80211_IFTYPE_AP:
3666                 csa_vif =
3667                         rcu_dereference_protected(mvm->csa_vif,
3668                                                   lockdep_is_held(&mvm->mutex));
3669                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3670                               "Another CSA is already in progress")) {
3671                         ret = -EBUSY;
3672                         goto out_unlock;
3673                 }
3674
3675                 rcu_assign_pointer(mvm->csa_vif, vif);
3676
3677                 if (WARN_ONCE(mvmvif->csa_countdown,
3678                               "Previous CSA countdown didn't complete")) {
3679                         ret = -EBUSY;
3680                         goto out_unlock;
3681                 }
3682
3683                 break;
3684         case NL80211_IFTYPE_STATION:
3685                 if (mvmvif->lqm_active)
3686                         iwl_mvm_send_lqm_cmd(vif,
3687                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3688                                              0, 0);
3689
3690                 /* Schedule the time event to a bit before beacon 1,
3691                  * to make sure we're in the new channel when the
3692                  * GO/AP arrives.
3693                  */
3694                 apply_time = chsw->device_timestamp +
3695                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3696                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3697
3698                 if (chsw->block_tx)
3699                         iwl_mvm_csa_client_absent(mvm, vif);
3700
3701                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3702                                             apply_time);
3703                 if (mvmvif->bf_data.bf_enabled) {
3704                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3705                         if (ret)
3706                                 goto out_unlock;
3707                 }
3708
3709                 break;
3710         default:
3711                 break;
3712         }
3713
3714         mvmvif->ps_disabled = true;
3715
3716         ret = iwl_mvm_power_update_ps(mvm);
3717         if (ret)
3718                 goto out_unlock;
3719
3720         /* we won't be on this channel any longer */
3721         iwl_mvm_teardown_tdls_peers(mvm);
3722
3723 out_unlock:
3724         mutex_unlock(&mvm->mutex);
3725
3726         return ret;
3727 }
3728
3729 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3730                                        struct ieee80211_vif *vif)
3731 {
3732         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3733         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3734         int ret;
3735
3736         mutex_lock(&mvm->mutex);
3737
3738         if (mvmvif->csa_failed) {
3739                 mvmvif->csa_failed = false;
3740                 ret = -EIO;
3741                 goto out_unlock;
3742         }
3743
3744         if (vif->type == NL80211_IFTYPE_STATION) {
3745                 struct iwl_mvm_sta *mvmsta;
3746
3747                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3748                                                           mvmvif->ap_sta_id);
3749
3750                 if (WARN_ON(!mvmsta)) {
3751                         ret = -EIO;
3752                         goto out_unlock;
3753                 }
3754
3755                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3756
3757                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3758
3759                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3760                 if (ret)
3761                         goto out_unlock;
3762
3763                 iwl_mvm_stop_session_protection(mvm, vif);
3764         }
3765
3766         mvmvif->ps_disabled = false;
3767
3768         ret = iwl_mvm_power_update_ps(mvm);
3769
3770 out_unlock:
3771         mutex_unlock(&mvm->mutex);
3772
3773         return ret;
3774 }
3775
3776 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3777                               struct ieee80211_vif *vif, u32 queues, bool drop)
3778 {
3779         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3780         struct iwl_mvm_vif *mvmvif;
3781         struct iwl_mvm_sta *mvmsta;
3782         struct ieee80211_sta *sta;
3783         int i;
3784         u32 msk = 0;
3785
3786         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3787                 return;
3788
3789         /* Make sure we're done with the deferred traffic before flushing */
3790         if (iwl_mvm_is_dqa_supported(mvm))
3791                 flush_work(&mvm->add_stream_wk);
3792
3793         mutex_lock(&mvm->mutex);
3794         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3795
3796         /* flush the AP-station and all TDLS peers */
3797         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3798                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3799                                                 lockdep_is_held(&mvm->mutex));
3800                 if (IS_ERR_OR_NULL(sta))
3801                         continue;
3802
3803                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3804                 if (mvmsta->vif != vif)
3805                         continue;
3806
3807                 /* make sure only TDLS peers or the AP are flushed */
3808                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3809
3810                 msk |= mvmsta->tfd_queue_msk;
3811         }
3812
3813         if (drop) {
3814                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3815                         IWL_ERR(mvm, "flush request fail\n");
3816                 mutex_unlock(&mvm->mutex);
3817         } else {
3818                 mutex_unlock(&mvm->mutex);
3819
3820                 /* this can take a while, and we may need/want other operations
3821                  * to succeed while doing this, so do it without the mutex held
3822                  */
3823                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3824         }
3825 }
3826
3827 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3828                                   struct survey_info *survey)
3829 {
3830         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3831         int ret;
3832
3833         memset(survey, 0, sizeof(*survey));
3834
3835         /* only support global statistics right now */
3836         if (idx != 0)
3837                 return -ENOENT;
3838
3839         if (fw_has_capa(&mvm->fw->ucode_capa,
3840                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3841                 return -ENOENT;
3842
3843         mutex_lock(&mvm->mutex);
3844
3845         if (mvm->ucode_loaded) {
3846                 ret = iwl_mvm_request_statistics(mvm, false);
3847                 if (ret)
3848                         goto out;
3849         }
3850
3851         survey->filled = SURVEY_INFO_TIME |
3852                          SURVEY_INFO_TIME_RX |
3853                          SURVEY_INFO_TIME_TX |
3854                          SURVEY_INFO_TIME_SCAN;
3855         survey->time = mvm->accu_radio_stats.on_time_rf +
3856                        mvm->radio_stats.on_time_rf;
3857         do_div(survey->time, USEC_PER_MSEC);
3858
3859         survey->time_rx = mvm->accu_radio_stats.rx_time +
3860                           mvm->radio_stats.rx_time;
3861         do_div(survey->time_rx, USEC_PER_MSEC);
3862
3863         survey->time_tx = mvm->accu_radio_stats.tx_time +
3864                           mvm->radio_stats.tx_time;
3865         do_div(survey->time_tx, USEC_PER_MSEC);
3866
3867         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3868                             mvm->radio_stats.on_time_scan;
3869         do_div(survey->time_scan, USEC_PER_MSEC);
3870
3871         ret = 0;
3872  out:
3873         mutex_unlock(&mvm->mutex);
3874         return ret;
3875 }
3876
3877 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3878                                        struct ieee80211_vif *vif,
3879                                        struct ieee80211_sta *sta,
3880                                        struct station_info *sinfo)
3881 {
3882         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3883         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3884         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3885
3886         if (fw_has_capa(&mvm->fw->ucode_capa,
3887                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3888                 return;
3889
3890         /* if beacon filtering isn't on mac80211 does it anyway */
3891         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3892                 return;
3893
3894         if (!vif->bss_conf.assoc)
3895                 return;
3896
3897         mutex_lock(&mvm->mutex);
3898
3899         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3900                 goto unlock;
3901
3902         if (iwl_mvm_request_statistics(mvm, false))
3903                 goto unlock;
3904
3905         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3906                            mvmvif->beacon_stats.accu_num_beacons;
3907         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3908         if (mvmvif->beacon_stats.avg_signal) {
3909                 /* firmware only reports a value after RXing a few beacons */
3910                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3911                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3912         }
3913  unlock:
3914         mutex_unlock(&mvm->mutex);
3915 }
3916
3917 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3918                                         struct ieee80211_vif *vif,
3919                                         const struct ieee80211_event *event)
3920 {
3921 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
3922         do {                                                    \
3923                 if ((_cnt) && --(_cnt))                         \
3924                         break;                                  \
3925                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
3926         } while (0)
3927
3928         struct iwl_fw_dbg_trigger_tlv *trig;
3929         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
3930
3931         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
3932                 return;
3933
3934         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
3935         trig_mlme = (void *)trig->data;
3936         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3937                 return;
3938
3939         if (event->u.mlme.data == ASSOC_EVENT) {
3940                 if (event->u.mlme.status == MLME_DENIED)
3941                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3942                                            trig_mlme->stop_assoc_denied,
3943                                            "DENIED ASSOC: reason %d",
3944                                             event->u.mlme.reason);
3945                 else if (event->u.mlme.status == MLME_TIMEOUT)
3946                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3947                                            trig_mlme->stop_assoc_timeout,
3948                                            "ASSOC TIMEOUT");
3949         } else if (event->u.mlme.data == AUTH_EVENT) {
3950                 if (event->u.mlme.status == MLME_DENIED)
3951                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3952                                            trig_mlme->stop_auth_denied,
3953                                            "DENIED AUTH: reason %d",
3954                                            event->u.mlme.reason);
3955                 else if (event->u.mlme.status == MLME_TIMEOUT)
3956                         CHECK_MLME_TRIGGER(mvm, trig, buf,
3957                                            trig_mlme->stop_auth_timeout,
3958                                            "AUTH TIMEOUT");
3959         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
3960                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3961                                    trig_mlme->stop_rx_deauth,
3962                                    "DEAUTH RX %d", event->u.mlme.reason);
3963         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
3964                 CHECK_MLME_TRIGGER(mvm, trig, buf,
3965                                    trig_mlme->stop_tx_deauth,
3966                                    "DEAUTH TX %d", event->u.mlme.reason);
3967         }
3968 #undef CHECK_MLME_TRIGGER
3969 }
3970
3971 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
3972                                           struct ieee80211_vif *vif,
3973                                           const struct ieee80211_event *event)
3974 {
3975         struct iwl_fw_dbg_trigger_tlv *trig;
3976         struct iwl_fw_dbg_trigger_ba *ba_trig;
3977
3978         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
3979                 return;
3980
3981         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
3982         ba_trig = (void *)trig->data;
3983         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
3984                 return;
3985
3986         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
3987                 return;
3988
3989         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
3990                                     "BAR received from %pM, tid %d, ssn %d",
3991                                     event->u.ba.sta->addr, event->u.ba.tid,
3992                                     event->u.ba.ssn);
3993 }
3994
3995 static void
3996 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
3997                                      struct ieee80211_vif *vif,
3998                                      const struct ieee80211_event *event)
3999 {
4000         struct iwl_fw_dbg_trigger_tlv *trig;
4001         struct iwl_fw_dbg_trigger_ba *ba_trig;
4002
4003         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4004                 return;
4005
4006         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4007         ba_trig = (void *)trig->data;
4008         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4009                 return;
4010
4011         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4012                 return;
4013
4014         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4015                                     "Frame from %pM timed out, tid %d",
4016                                     event->u.ba.sta->addr, event->u.ba.tid);
4017 }
4018
4019 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4020                                        struct ieee80211_vif *vif,
4021                                        const struct ieee80211_event *event)
4022 {
4023         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4024
4025         switch (event->type) {
4026         case MLME_EVENT:
4027                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4028                 break;
4029         case BAR_RX_EVENT:
4030                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4031                 break;
4032         case BA_FRAME_TIMEOUT:
4033                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4034                 break;
4035         default:
4036                 break;
4037         }
4038 }
4039
4040 const struct ieee80211_ops iwl_mvm_hw_ops = {
4041         .tx = iwl_mvm_mac_tx,
4042         .ampdu_action = iwl_mvm_mac_ampdu_action,
4043         .start = iwl_mvm_mac_start,
4044         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4045         .stop = iwl_mvm_mac_stop,
4046         .add_interface = iwl_mvm_mac_add_interface,
4047         .remove_interface = iwl_mvm_mac_remove_interface,
4048         .config = iwl_mvm_mac_config,
4049         .prepare_multicast = iwl_mvm_prepare_multicast,
4050         .configure_filter = iwl_mvm_configure_filter,
4051         .config_iface_filter = iwl_mvm_config_iface_filter,
4052         .bss_info_changed = iwl_mvm_bss_info_changed,
4053         .hw_scan = iwl_mvm_mac_hw_scan,
4054         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4055         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4056         .sta_state = iwl_mvm_mac_sta_state,
4057         .sta_notify = iwl_mvm_mac_sta_notify,
4058         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4059         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4060         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4061         .sta_rc_update = iwl_mvm_sta_rc_update,
4062         .conf_tx = iwl_mvm_mac_conf_tx,
4063         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4064         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4065         .flush = iwl_mvm_mac_flush,
4066         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4067         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4068         .set_key = iwl_mvm_mac_set_key,
4069         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4070         .remain_on_channel = iwl_mvm_roc,
4071         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4072         .add_chanctx = iwl_mvm_add_chanctx,
4073         .remove_chanctx = iwl_mvm_remove_chanctx,
4074         .change_chanctx = iwl_mvm_change_chanctx,
4075         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4076         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4077         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4078
4079         .start_ap = iwl_mvm_start_ap_ibss,
4080         .stop_ap = iwl_mvm_stop_ap_ibss,
4081         .join_ibss = iwl_mvm_start_ap_ibss,
4082         .leave_ibss = iwl_mvm_stop_ap_ibss,
4083
4084         .set_tim = iwl_mvm_set_tim,
4085
4086         .channel_switch = iwl_mvm_channel_switch,
4087         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4088         .post_channel_switch = iwl_mvm_post_channel_switch,
4089
4090         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4091         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4092         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4093
4094         .event_callback = iwl_mvm_mac_event_callback,
4095
4096         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4097
4098 #ifdef CONFIG_PM_SLEEP
4099         /* look at d3.c */
4100         .suspend = iwl_mvm_suspend,
4101         .resume = iwl_mvm_resume,
4102         .set_wakeup = iwl_mvm_set_wakeup,
4103         .set_rekey_data = iwl_mvm_set_rekey_data,
4104 #if IS_ENABLED(CONFIG_IPV6)
4105         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4106 #endif
4107         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4108 #endif
4109         .get_survey = iwl_mvm_mac_get_survey,
4110         .sta_statistics = iwl_mvm_mac_sta_statistics,
4111 };