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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
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  21  * along with this program; if not, write to the Free Software
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
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  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  39  * modification, are permitted provided that the following conditions
  40  * are met:
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  43  *    notice, this list of conditions and the following disclaimer.
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  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/kernel.h>
  66 #include <linux/slab.h>
  67 #include <linux/skbuff.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/ip.h>
  71 #include <linux/if_arp.h>
  72 #include <linux/devcoredump.h>
  73 #include <net/mac80211.h>
  74 #include <net/ieee80211_radiotap.h>
  75 #include <net/tcp.h>
  76
  77 #include "iwl-op-mode.h"
  78 #include "iwl-io.h"
  79 #include "mvm.h"
  80 #include "sta.h"
  81 #include "time-event.h"
  82 #include "iwl-eeprom-parse.h"
  83 #include "fw-api-scan.h"
  84 #include "iwl-phy-db.h"
  85 #include "testmode.h"
  86 #include "iwl-fw-error-dump.h"
  87 #include "iwl-prph.h"
  88
  89 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  90         {
  91                 .max = 1,
  92                 .types = BIT(NL80211_IFTYPE_STATION),
  93         },
  94         {
  95                 .max = 1,
  96                 .types = BIT(NL80211_IFTYPE_AP) |
  97                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  98                         BIT(NL80211_IFTYPE_P2P_GO),
  99         },
 100         {
 101                 .max = 1,
 102                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 103         },
 104 };
 105
 106 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 107         {
 108                 .num_different_channels = 1,
 109                 .max_interfaces = 3,
 110                 .limits = iwl_mvm_limits,
 111                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 112         },
 113 };
 114
 115 #ifdef CONFIG_PM_SLEEP
 116 static const struct nl80211_wowlan_tcp_data_token_feature
 117 iwl_mvm_wowlan_tcp_token_feature = {
 118         .min_len = 0,
 119         .max_len = 255,
 120         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 121 };
 122
 123 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 124         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 125         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 126                             sizeof(struct ethhdr) -
 127                             sizeof(struct iphdr) -
 128                             sizeof(struct tcphdr),
 129         .data_interval_max = 65535, /* __le16 in API */
 130         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 131                             sizeof(struct ethhdr) -
 132                             sizeof(struct iphdr) -
 133                             sizeof(struct tcphdr),
 134         .seq = true,
 135 };
 136 #endif
 137
 138 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 139 /*
 140  * Use the reserved field to indicate magic values.
 141  * these values will only be used internally by the driver,
 142  * and won't make it to the fw (reserved will be 0).
 143  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 144  *      be the vif's ip address. in case there is not a single
 145  *      ip address (0, or more than 1), this attribute will
 146  *      be skipped.
 147  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 148  *      the LSB bytes of the vif's mac address
 149  */
 150 enum {
 151         BC_FILTER_MAGIC_NONE = 0,
 152         BC_FILTER_MAGIC_IP,
 153         BC_FILTER_MAGIC_MAC,
 154 };
 155
 156 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 157         {
 158                 /* arp */
 159                 .discard = 0,
 160                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 161                 .attrs = {
 162                         {
 163                                 /* frame type - arp, hw type - ethernet */
 164                                 .offset_type =
 165                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 166                                 .offset = sizeof(rfc1042_header),
 167                                 .val = cpu_to_be32(0x08060001),
 168                                 .mask = cpu_to_be32(0xffffffff),
 169                         },
 170                         {
 171                                 /* arp dest ip */
 172                                 .offset_type =
 173                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 174                                 .offset = sizeof(rfc1042_header) + 2 +
 175                                           sizeof(struct arphdr) +
 176                                           ETH_ALEN + sizeof(__be32) +
 177                                           ETH_ALEN,
 178                                 .mask = cpu_to_be32(0xffffffff),
 179                                 /* mark it as special field */
 180                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 181                         },
 182                 },
 183         },
 184         {
 185                 /* dhcp offer bcast */
 186                 .discard = 0,
 187                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 188                 .attrs = {
 189                         {
 190                                 /* udp dest port - 68 (bootp client)*/
 191                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 192                                 .offset = offsetof(struct udphdr, dest),
 193                                 .val = cpu_to_be32(0x00440000),
 194                                 .mask = cpu_to_be32(0xffff0000),
 195                         },
 196                         {
 197                                 /* dhcp - lsb bytes of client hw address */
 198                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 199                                 .offset = 38,
 200                                 .mask = cpu_to_be32(0xffffffff),
 201                                 /* mark it as special field */
 202                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 203                         },
 204                 },
 205         },
 206         /* last filter must be empty */
 207         {},
 208 };
 209 #endif
 210
 211 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 212 {
 213         if (!iwl_mvm_is_d0i3_supported(mvm))
 214                 return;
 215
 216         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 217         spin_lock_bh(&mvm->refs_lock);
 218         mvm->refs[ref_type]++;
 219         spin_unlock_bh(&mvm->refs_lock);
 220         iwl_trans_ref(mvm->trans);
 221 }
 222
 223 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 224 {
 225         if (!iwl_mvm_is_d0i3_supported(mvm))
 226                 return;
 227
 228         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 229         spin_lock_bh(&mvm->refs_lock);
 230         WARN_ON(!mvm->refs[ref_type]--);
 231         spin_unlock_bh(&mvm->refs_lock);
 232         iwl_trans_unref(mvm->trans);
 233 }
 234
 235 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 236                                      enum iwl_mvm_ref_type except_ref)
 237 {
 238         int i, j;
 239
 240         if (!iwl_mvm_is_d0i3_supported(mvm))
 241                 return;
 242
 243         spin_lock_bh(&mvm->refs_lock);
 244         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 245                 if (except_ref == i || !mvm->refs[i])
 246                         continue;
 247
 248                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 249                               i, mvm->refs[i]);
 250                 for (j = 0; j < mvm->refs[i]; j++)
 251                         iwl_trans_unref(mvm->trans);
 252                 mvm->refs[i] = 0;
 253         }
 254         spin_unlock_bh(&mvm->refs_lock);
 255 }
 256
 257 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 258 {
 259         int i;
 260         bool taken = false;
 261
 262         if (!iwl_mvm_is_d0i3_supported(mvm))
 263                 return true;
 264
 265         spin_lock_bh(&mvm->refs_lock);
 266         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 267                 if (mvm->refs[i]) {
 268                         taken = true;
 269                         break;
 270                 }
 271         }
 272         spin_unlock_bh(&mvm->refs_lock);
 273
 274         return taken;
 275 }
 276
 277 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 278 {
 279         iwl_mvm_ref(mvm, ref_type);
 280
 281         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 282                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 283                                 HZ)) {
 284                 WARN_ON_ONCE(1);
 285                 iwl_mvm_unref(mvm, ref_type);
 286                 return -EIO;
 287         }
 288
 289         return 0;
 290 }
 291
 292 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 293 {
 294         int i;
 295
 296         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 297         for (i = 0; i < NUM_PHY_CTX; i++) {
 298                 mvm->phy_ctxts[i].id = i;
 299                 mvm->phy_ctxts[i].ref = 0;
 300         }
 301 }
 302
 303 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 304 {
 305         struct ieee80211_hw *hw = mvm->hw;
 306         int num_mac, ret, i;
 307
 308         /* Tell mac80211 our characteristics */
 309         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 310                     IEEE80211_HW_SPECTRUM_MGMT |
 311                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 312                     IEEE80211_HW_QUEUE_CONTROL |
 313                     IEEE80211_HW_WANT_MONITOR_VIF |
 314                     IEEE80211_HW_SUPPORTS_PS |
 315                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 316                     IEEE80211_HW_AMPDU_AGGREGATION |
 317                     IEEE80211_HW_TIMING_BEACON_ONLY |
 318                     IEEE80211_HW_CONNECTION_MONITOR |
 319                     IEEE80211_HW_CHANCTX_STA_CSA |
 320                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 321
 322         hw->queues = mvm->first_agg_queue;
 323         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 324         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 325                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 326         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 327                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 328         hw->rate_control_algorithm = "iwl-mvm-rs";
 329
 330         /*
 331          * Enable 11w if advertised by firmware and software crypto
 332          * is not enabled (as the firmware will interpret some mgmt
 333          * packets, so enabling it with software crypto isn't safe)
 334          */
 335         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 336             !iwlwifi_mod_params.sw_crypto)
 337                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 338
 339         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
 340             !iwlwifi_mod_params.uapsd_disable) {
 341                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 342                 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 343                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 344         }
 345
 346         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
 347             mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) {
 348                 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 349                 hw->wiphy->features |=
 350                         NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 351                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 352         }
 353
 354         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 355         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 356         hw->chanctx_data_size = sizeof(u16);
 357
 358         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 359                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 360                 BIT(NL80211_IFTYPE_AP) |
 361                 BIT(NL80211_IFTYPE_P2P_GO) |
 362                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 363                 BIT(NL80211_IFTYPE_ADHOC);
 364
 365         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 366         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 367                                        REGULATORY_DISABLE_BEACON_HINTS;
 368
 369         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 370                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 371
 372         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 373
 374         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 375         hw->wiphy->n_iface_combinations =
 376                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 377
 378         hw->wiphy->max_remain_on_channel_duration = 10000;
 379         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 380         /* we can compensate an offset of up to 3 channels = 15 MHz */
 381         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 382
 383         /* Extract MAC address */
 384         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 385         hw->wiphy->addresses = mvm->addresses;
 386         hw->wiphy->n_addresses = 1;
 387
 388         /* Extract additional MAC addresses if available */
 389         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 390                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 391
 392         for (i = 1; i < num_mac; i++) {
 393                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 394                        ETH_ALEN);
 395                 mvm->addresses[i].addr[5]++;
 396                 hw->wiphy->n_addresses++;
 397         }
 398
 399         iwl_mvm_reset_phy_ctxts(mvm);
 400
 401         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 402
 403         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 404
 405         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 406                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 407                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 408         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 409                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 410                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 411
 412         hw->wiphy->hw_version = mvm->trans->hw_id;
 413
 414         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 415                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 416         else
 417                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 418
 419         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 420                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 421                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 422                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 423                 /* we create the 802.11 header and zero length SSID IE. */
 424                 hw->wiphy->max_sched_scan_ie_len =
 425                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 426         }
 427
 428         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 429                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 430                                NL80211_FEATURE_P2P_GO_OPPPS |
 431                                NL80211_FEATURE_DYNAMIC_SMPS |
 432                                NL80211_FEATURE_STATIC_SMPS |
 433                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 434
 435         if (mvm->fw->ucode_capa.capa[0] &
 436             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 437                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 438         if (mvm->fw->ucode_capa.capa[0] &
 439             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 440                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 441
 442         if (mvm->fw->ucode_capa.capa[0] &
 443             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 444                 hw->wiphy->features |=
 445                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 446
 447         if (mvm->fw->ucode_capa.capa[0] &
 448             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 449                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 450
 451         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 452
 453         /* currently FW API supports only one optional cipher scheme */
 454         if (mvm->fw->cs[0].cipher) {
 455                 mvm->hw->n_cipher_schemes = 1;
 456                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 457         }
 458
 459 #ifdef CONFIG_PM_SLEEP
 460         if (iwl_mvm_is_d0i3_supported(mvm) &&
 461             device_can_wakeup(mvm->trans->dev)) {
 462                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 463                 hw->wiphy->wowlan = &mvm->wowlan;
 464         } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 465             mvm->trans->ops->d3_suspend &&
 466             mvm->trans->ops->d3_resume &&
 467             device_can_wakeup(mvm->trans->dev)) {
 468                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 469                                     WIPHY_WOWLAN_DISCONNECT |
 470                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 471                                     WIPHY_WOWLAN_RFKILL_RELEASE |
 472                                     WIPHY_WOWLAN_NET_DETECT;
 473                 if (!iwlwifi_mod_params.sw_crypto)
 474                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 475                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 476                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 477
 478                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 479                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 480                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 481                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 482                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 483                 hw->wiphy->wowlan = &mvm->wowlan;
 484         }
 485 #endif
 486
 487 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 488         /* assign default bcast filtering configuration */
 489         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 490 #endif
 491
 492         ret = iwl_mvm_leds_init(mvm);
 493         if (ret)
 494                 return ret;
 495
 496         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 497                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 498                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 499         }
 500
 501         if (mvm->fw->ucode_capa.capa[0] &
 502             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 503                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 504                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 505         }
 506
 507         ret = ieee80211_register_hw(mvm->hw);
 508         if (ret)
 509                 iwl_mvm_leds_exit(mvm);
 510
 511         return ret;
 512 }
 513
 514 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 515                              struct ieee80211_sta *sta,
 516                              struct sk_buff *skb)
 517 {
 518         struct iwl_mvm_sta *mvmsta;
 519         bool defer = false;
 520
 521         /*
 522          * double check the IN_D0I3 flag both before and after
 523          * taking the spinlock, in order to prevent taking
 524          * the spinlock when not needed.
 525          */
 526         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 527                 return false;
 528
 529         spin_lock(&mvm->d0i3_tx_lock);
 530         /*
 531          * testing the flag again ensures the skb dequeue
 532          * loop (on d0i3 exit) hasn't run yet.
 533          */
 534         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 535                 goto out;
 536
 537         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 538         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 539             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 540                 goto out;
 541
 542         __skb_queue_tail(&mvm->d0i3_tx, skb);
 543         ieee80211_stop_queues(mvm->hw);
 544
 545         /* trigger wakeup */
 546         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 547         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 548
 549         defer = true;
 550 out:
 551         spin_unlock(&mvm->d0i3_tx_lock);
 552         return defer;
 553 }
 554
 555 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 556                            struct ieee80211_tx_control *control,
 557                            struct sk_buff *skb)
 558 {
 559         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 560         struct ieee80211_sta *sta = control->sta;
 561         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 562         struct ieee80211_hdr *hdr = (void *)skb->data;
 563
 564         if (iwl_mvm_is_radio_killed(mvm)) {
 565                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 566                 goto drop;
 567         }
 568
 569         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 570             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 571             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 572                 goto drop;
 573
 574         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 575         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 576                      ieee80211_is_mgmt(hdr->frame_control) &&
 577                      !ieee80211_is_deauth(hdr->frame_control) &&
 578                      !ieee80211_is_disassoc(hdr->frame_control) &&
 579                      !ieee80211_is_action(hdr->frame_control)))
 580                 sta = NULL;
 581
 582         if (sta) {
 583                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 584                         return;
 585                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 586                         goto drop;
 587                 return;
 588         }
 589
 590         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 591                 goto drop;
 592         return;
 593  drop:
 594         ieee80211_free_txskb(hw, skb);
 595 }
 596
 597 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 598 {
 599         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 600                 return false;
 601         return true;
 602 }
 603
 604 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 605 {
 606         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 607                 return false;
 608         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 609                 return true;
 610
 611         /* enabled by default */
 612         return true;
 613 }
 614
 615 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 616                                     struct ieee80211_vif *vif,
 617                                     enum ieee80211_ampdu_mlme_action action,
 618                                     struct ieee80211_sta *sta, u16 tid,
 619                                     u16 *ssn, u8 buf_size)
 620 {
 621         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 622         int ret;
 623         bool tx_agg_ref = false;
 624
 625         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 626                      sta->addr, tid, action);
 627
 628         if (!(mvm->nvm_data->sku_cap_11n_enable))
 629                 return -EACCES;
 630
 631         /* return from D0i3 before starting a new Tx aggregation */
 632         switch (action) {
 633         case IEEE80211_AMPDU_TX_START:
 634         case IEEE80211_AMPDU_TX_STOP_CONT:
 635         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 636         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 637         case IEEE80211_AMPDU_TX_OPERATIONAL:
 638                 /*
 639                  * for tx start, wait synchronously until D0i3 exit to
 640                  * get the correct sequence number for the tid.
 641                  * additionally, some other ampdu actions use direct
 642                  * target access, which is not handled automatically
 643                  * by the trans layer (unlike commands), so wait for
 644                  * d0i3 exit in these cases as well.
 645                  */
 646                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 647                 if (ret)
 648                         return ret;
 649
 650                 tx_agg_ref = true;
 651                 break;
 652         default:
 653                 break;
 654         }
 655
 656         mutex_lock(&mvm->mutex);
 657
 658         switch (action) {
 659         case IEEE80211_AMPDU_RX_START:
 660                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 661                         ret = -EINVAL;
 662                         break;
 663                 }
 664                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 665                 break;
 666         case IEEE80211_AMPDU_RX_STOP:
 667                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 668                 break;
 669         case IEEE80211_AMPDU_TX_START:
 670                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 671                         ret = -EINVAL;
 672                         break;
 673                 }
 674                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 675                 break;
 676         case IEEE80211_AMPDU_TX_STOP_CONT:
 677                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 678                 break;
 679         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 680         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 681                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 682                 break;
 683         case IEEE80211_AMPDU_TX_OPERATIONAL:
 684                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 685                 break;
 686         default:
 687                 WARN_ON_ONCE(1);
 688                 ret = -EINVAL;
 689                 break;
 690         }
 691         mutex_unlock(&mvm->mutex);
 692
 693         /*
 694          * If the tid is marked as started, we won't use it for offloaded
 695          * traffic on the next D0i3 entry. It's safe to unref.
 696          */
 697         if (tx_agg_ref)
 698                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 699
 700         return ret;
 701 }
 702
 703 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 704                                      struct ieee80211_vif *vif)
 705 {
 706         struct iwl_mvm *mvm = data;
 707         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 708
 709         mvmvif->uploaded = false;
 710         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 711
 712         /* does this make sense at all? */
 713         mvmvif->color++;
 714
 715         spin_lock_bh(&mvm->time_event_lock);
 716         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 717         spin_unlock_bh(&mvm->time_event_lock);
 718
 719         mvmvif->phy_ctxt = NULL;
 720         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 721 }
 722
 723 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 724                                      const void *data, size_t datalen)
 725 {
 726         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 727         ssize_t bytes_read;
 728         ssize_t bytes_read_trans;
 729
 730         if (offset < dump_ptrs->op_mode_len) {
 731                 bytes_read = min_t(ssize_t, count,
 732                                    dump_ptrs->op_mode_len - offset);
 733                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 734                        bytes_read);
 735                 offset += bytes_read;
 736                 count -= bytes_read;
 737
 738                 if (count == 0)
 739                         return bytes_read;
 740         } else {
 741                 bytes_read = 0;
 742         }
 743
 744         if (!dump_ptrs->trans_ptr)
 745                 return bytes_read;
 746
 747         offset -= dump_ptrs->op_mode_len;
 748         bytes_read_trans = min_t(ssize_t, count,
 749                                  dump_ptrs->trans_ptr->len - offset);
 750         memcpy(buffer + bytes_read,
 751                (u8 *)dump_ptrs->trans_ptr->data + offset,
 752                bytes_read_trans);
 753
 754         return bytes_read + bytes_read_trans;
 755 }
 756
 757 static void iwl_mvm_free_coredump(const void *data)
 758 {
 759         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 760
 761         vfree(fw_error_dump->op_mode_ptr);
 762         vfree(fw_error_dump->trans_ptr);
 763         kfree(fw_error_dump);
 764 }
 765
 766 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 767 {
 768         struct iwl_fw_error_dump_file *dump_file;
 769         struct iwl_fw_error_dump_data *dump_data;
 770         struct iwl_fw_error_dump_info *dump_info;
 771         struct iwl_mvm_dump_ptrs *fw_error_dump;
 772         u32 sram_len, sram_ofs;
 773         u32 file_len, rxf_len;
 774         unsigned long flags;
 775         int reg_val;
 776
 777         lockdep_assert_held(&mvm->mutex);
 778
 779         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
 780         if (!fw_error_dump)
 781                 return;
 782
 783         /* SRAM - include stack CCM if driver knows the values for it */
 784         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
 785                 const struct fw_img *img;
 786
 787                 img = &mvm->fw->img[mvm->cur_ucode];
 788                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 789                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 790         } else {
 791                 sram_ofs = mvm->cfg->dccm_offset;
 792                 sram_len = mvm->cfg->dccm_len;
 793         }
 794
 795         /* reading buffer size */
 796         reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
 797         rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
 798
 799         /* the register holds the value divided by 128 */
 800         rxf_len = rxf_len << 7;
 801
 802         file_len = sizeof(*dump_file) +
 803                    sizeof(*dump_data) * 3 +
 804                    sram_len +
 805                    rxf_len +
 806                    sizeof(*dump_info);
 807
 808         dump_file = vzalloc(file_len);
 809         if (!dump_file) {
 810                 kfree(fw_error_dump);
 811                 return;
 812         }
 813
 814         fw_error_dump->op_mode_ptr = dump_file;
 815
 816         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
 817         dump_data = (void *)dump_file->data;
 818
 819         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
 820         dump_data->len = cpu_to_le32(sizeof(*dump_info));
 821         dump_info = (void *) dump_data->data;
 822         dump_info->device_family =
 823                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
 824                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
 825                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
 826         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 827                sizeof(dump_info->fw_human_readable));
 828         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 829                 sizeof(dump_info->dev_human_readable));
 830         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 831                 sizeof(dump_info->bus_human_readable));
 832
 833         dump_data = iwl_fw_error_next_data(dump_data);
 834         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 835         dump_data->len = cpu_to_le32(rxf_len);
 836
 837         if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
 838                 u32 *rxf = (void *)dump_data->data;
 839                 int i;
 840
 841                 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
 842                         iwl_trans_write_prph(mvm->trans,
 843                                              RXF_LD_FENCE_OFFSET_ADDR,
 844                                              i * sizeof(u32));
 845                         rxf[i] = iwl_trans_read_prph(mvm->trans,
 846                                                      RXF_FIFO_RD_FENCE_ADDR);
 847                 }
 848                 iwl_trans_release_nic_access(mvm->trans, &flags);
 849         }
 850
 851         dump_data = iwl_fw_error_next_data(dump_data);
 852         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
 853         dump_data->len = cpu_to_le32(sram_len);
 854         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
 855                                  sram_len);
 856
 857         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
 858         fw_error_dump->op_mode_len = file_len;
 859         if (fw_error_dump->trans_ptr)
 860                 file_len += fw_error_dump->trans_ptr->len;
 861         dump_file->file_len = cpu_to_le32(file_len);
 862
 863         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
 864                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
 865 }
 866
 867 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 868 {
 869         /* clear the D3 reconfig, we only need it to avoid dumping a
 870          * firmware coredump on reconfiguration, we shouldn't do that
 871          * on D3->D0 transition
 872          */
 873         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
 874                 iwl_mvm_fw_error_dump(mvm);
 875
 876         iwl_trans_stop_device(mvm->trans);
 877
 878         mvm->scan_status = IWL_MVM_SCAN_NONE;
 879         mvm->ps_disabled = false;
 880         mvm->calibrating = false;
 881
 882         /* just in case one was running */
 883         ieee80211_remain_on_channel_expired(mvm->hw);
 884
 885         ieee80211_iterate_active_interfaces_atomic(
 886                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 887                 iwl_mvm_cleanup_iterator, mvm);
 888
 889         mvm->p2p_device_vif = NULL;
 890         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 891
 892         iwl_mvm_reset_phy_ctxts(mvm);
 893         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 894         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 895         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 896         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 897         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 898         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 899         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 900         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 901         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 902
 903         ieee80211_wake_queues(mvm->hw);
 904
 905         /* cleanup all stale references (scan, roc), but keep the
 906          * ucode_down ref until reconfig is complete */
 907         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 908
 909         /* clear any stale d0i3 state */
 910         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 911
 912         mvm->vif_count = 0;
 913         mvm->rx_ba_sessions = 0;
 914 }
 915
 916 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
 917 {
 918         int ret;
 919
 920         lockdep_assert_held(&mvm->mutex);
 921
 922         /* Clean up some internal and mac80211 state on restart */
 923         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 924                 iwl_mvm_restart_cleanup(mvm);
 925
 926         ret = iwl_mvm_up(mvm);
 927
 928         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 929                 /* Something went wrong - we need to finish some cleanup
 930                  * that normally iwl_mvm_mac_restart_complete() below
 931                  * would do.
 932                  */
 933                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 934                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
 935         }
 936
 937         return ret;
 938 }
 939
 940 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 941 {
 942         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 943         int ret;
 944
 945         mutex_lock(&mvm->mutex);
 946         ret = __iwl_mvm_mac_start(mvm);
 947         mutex_unlock(&mvm->mutex);
 948
 949         return ret;
 950 }
 951
 952 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
 953 {
 954         int ret;
 955
 956         mutex_lock(&mvm->mutex);
 957
 958         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 959         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 960         ret = iwl_mvm_update_quotas(mvm, NULL);
 961         if (ret)
 962                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 963                         ret);
 964
 965         /* allow transport/FW low power modes */
 966         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 967
 968         /*
 969          * If we have TDLS peers, remove them. We don't know the last seqno/PN
 970          * of packets the FW sent out, so we must reconnect.
 971          */
 972         iwl_mvm_teardown_tdls_peers(mvm);
 973
 974         mutex_unlock(&mvm->mutex);
 975 }
 976
 977 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
 978 {
 979         bool exit_now;
 980
 981         if (!iwl_mvm_is_d0i3_supported(mvm))
 982                 return;
 983
 984         mutex_lock(&mvm->d0i3_suspend_mutex);
 985         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
 986         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
 987                                         &mvm->d0i3_suspend_flags);
 988         mutex_unlock(&mvm->d0i3_suspend_mutex);
 989
 990         if (exit_now) {
 991                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
 992                 _iwl_mvm_exit_d0i3(mvm);
 993         }
 994 }
 995
 996 static void
 997 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
 998                               enum ieee80211_reconfig_type reconfig_type)
 999 {
1000         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1001
1002         switch (reconfig_type) {
1003         case IEEE80211_RECONFIG_TYPE_RESTART:
1004                 iwl_mvm_restart_complete(mvm);
1005                 break;
1006         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1007                 iwl_mvm_resume_complete(mvm);
1008                 break;
1009         }
1010 }
1011
1012 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1013 {
1014         lockdep_assert_held(&mvm->mutex);
1015
1016         /* disallow low power states when the FW is down */
1017         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1018
1019         /* async_handlers_wk is now blocked */
1020
1021         /*
1022          * The work item could be running or queued if the
1023          * ROC time event stops just as we get here.
1024          */
1025         cancel_work_sync(&mvm->roc_done_wk);
1026
1027         iwl_trans_stop_device(mvm->trans);
1028
1029         iwl_mvm_async_handlers_purge(mvm);
1030         /* async_handlers_list is empty and will stay empty: HW is stopped */
1031
1032         /* the fw is stopped, the aux sta is dead: clean up driver state */
1033         iwl_mvm_del_aux_sta(mvm);
1034
1035         mvm->ucode_loaded = false;
1036 }
1037
1038 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1039 {
1040         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1041
1042         flush_work(&mvm->d0i3_exit_work);
1043         flush_work(&mvm->async_handlers_wk);
1044         flush_work(&mvm->fw_error_dump_wk);
1045
1046         mutex_lock(&mvm->mutex);
1047         __iwl_mvm_mac_stop(mvm);
1048         mutex_unlock(&mvm->mutex);
1049
1050         /*
1051          * The worker might have been waiting for the mutex, let it run and
1052          * discover that its list is now empty.
1053          */
1054         cancel_work_sync(&mvm->async_handlers_wk);
1055 }
1056
1057 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1058 {
1059         u16 i;
1060
1061         lockdep_assert_held(&mvm->mutex);
1062
1063         for (i = 0; i < NUM_PHY_CTX; i++)
1064                 if (!mvm->phy_ctxts[i].ref)
1065                         return &mvm->phy_ctxts[i];
1066
1067         IWL_ERR(mvm, "No available PHY context\n");
1068         return NULL;
1069 }
1070
1071 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1072                                 s8 tx_power)
1073 {
1074         /* FW is in charge of regulatory enforcement */
1075         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1076                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1077                 .pwr_restriction = cpu_to_le16(tx_power),
1078         };
1079
1080         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1081                                     sizeof(reduce_txpwr_cmd),
1082                                     &reduce_txpwr_cmd);
1083 }
1084
1085 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1086                                      struct ieee80211_vif *vif)
1087 {
1088         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1089         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1090         int ret;
1091
1092         /*
1093          * make sure D0i3 exit is completed, otherwise a target access
1094          * during tx queue configuration could be done when still in
1095          * D0i3 state.
1096          */
1097         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1098         if (ret)
1099                 return ret;
1100
1101         /*
1102          * Not much to do here. The stack will not allow interface
1103          * types or combinations that we didn't advertise, so we
1104          * don't really have to check the types.
1105          */
1106
1107         mutex_lock(&mvm->mutex);
1108
1109         /* Allocate resources for the MAC context, and add it to the fw  */
1110         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1111         if (ret)
1112                 goto out_unlock;
1113
1114         /* Counting number of interfaces is needed for legacy PM */
1115         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1116                 mvm->vif_count++;
1117
1118         /*
1119          * The AP binding flow can be done only after the beacon
1120          * template is configured (which happens only in the mac80211
1121          * start_ap() flow), and adding the broadcast station can happen
1122          * only after the binding.
1123          * In addition, since modifying the MAC before adding a bcast
1124          * station is not allowed by the FW, delay the adding of MAC context to
1125          * the point where we can also add the bcast station.
1126          * In short: there's not much we can do at this point, other than
1127          * allocating resources :)
1128          */
1129         if (vif->type == NL80211_IFTYPE_AP ||
1130             vif->type == NL80211_IFTYPE_ADHOC) {
1131                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1132                 if (ret) {
1133                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1134                         goto out_release;
1135                 }
1136
1137                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1138                 goto out_unlock;
1139         }
1140
1141         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1142         if (ret)
1143                 goto out_release;
1144
1145         ret = iwl_mvm_power_update_mac(mvm);
1146         if (ret)
1147                 goto out_release;
1148
1149         /* beacon filtering */
1150         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1151         if (ret)
1152                 goto out_remove_mac;
1153
1154         if (!mvm->bf_allowed_vif &&
1155             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1156                 mvm->bf_allowed_vif = mvmvif;
1157                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1158                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1159         }
1160
1161         /*
1162          * P2P_DEVICE interface does not have a channel context assigned to it,
1163          * so a dedicated PHY context is allocated to it and the corresponding
1164          * MAC context is bound to it at this stage.
1165          */
1166         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1167
1168                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1169                 if (!mvmvif->phy_ctxt) {
1170                         ret = -ENOSPC;
1171                         goto out_free_bf;
1172                 }
1173
1174                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1175                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1176                 if (ret)
1177                         goto out_unref_phy;
1178
1179                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1180                 if (ret)
1181                         goto out_unbind;
1182
1183                 /* Save a pointer to p2p device vif, so it can later be used to
1184                  * update the p2p device MAC when a GO is started/stopped */
1185                 mvm->p2p_device_vif = vif;
1186         }
1187
1188         iwl_mvm_vif_dbgfs_register(mvm, vif);
1189         goto out_unlock;
1190
1191  out_unbind:
1192         iwl_mvm_binding_remove_vif(mvm, vif);
1193  out_unref_phy:
1194         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1195  out_free_bf:
1196         if (mvm->bf_allowed_vif == mvmvif) {
1197                 mvm->bf_allowed_vif = NULL;
1198                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1199                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1200         }
1201  out_remove_mac:
1202         mvmvif->phy_ctxt = NULL;
1203         iwl_mvm_mac_ctxt_remove(mvm, vif);
1204  out_release:
1205         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1206                 mvm->vif_count--;
1207
1208         iwl_mvm_mac_ctxt_release(mvm, vif);
1209  out_unlock:
1210         mutex_unlock(&mvm->mutex);
1211
1212         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1213
1214         return ret;
1215 }
1216
1217 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1218                                         struct ieee80211_vif *vif)
1219 {
1220         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1221
1222         if (tfd_msk) {
1223                 mutex_lock(&mvm->mutex);
1224                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1225                 mutex_unlock(&mvm->mutex);
1226         }
1227
1228         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1229                 /*
1230                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1231                  * We assume here that all the packets sent to the OFFCHANNEL
1232                  * queue are sent in ROC session.
1233                  */
1234                 flush_work(&mvm->roc_done_wk);
1235         } else {
1236                 /*
1237                  * By now, all the AC queues are empty. The AGG queues are
1238                  * empty too. We already got all the Tx responses for all the
1239                  * packets in the queues. The drain work can have been
1240                  * triggered. Flush it.
1241                  */
1242                 flush_work(&mvm->sta_drained_wk);
1243         }
1244 }
1245
1246 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1247                                          struct ieee80211_vif *vif)
1248 {
1249         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1250         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1251
1252         iwl_mvm_prepare_mac_removal(mvm, vif);
1253
1254         mutex_lock(&mvm->mutex);
1255
1256         if (mvm->bf_allowed_vif == mvmvif) {
1257                 mvm->bf_allowed_vif = NULL;
1258                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1259                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1260         }
1261
1262         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1263
1264         /*
1265          * For AP/GO interface, the tear down of the resources allocated to the
1266          * interface is be handled as part of the stop_ap flow.
1267          */
1268         if (vif->type == NL80211_IFTYPE_AP ||
1269             vif->type == NL80211_IFTYPE_ADHOC) {
1270 #ifdef CONFIG_NL80211_TESTMODE
1271                 if (vif == mvm->noa_vif) {
1272                         mvm->noa_vif = NULL;
1273                         mvm->noa_duration = 0;
1274                 }
1275 #endif
1276                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1277                 goto out_release;
1278         }
1279
1280         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1281                 mvm->p2p_device_vif = NULL;
1282                 iwl_mvm_rm_bcast_sta(mvm, vif);
1283                 iwl_mvm_binding_remove_vif(mvm, vif);
1284                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1285                 mvmvif->phy_ctxt = NULL;
1286         }
1287
1288         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1289                 mvm->vif_count--;
1290
1291         iwl_mvm_power_update_mac(mvm);
1292         iwl_mvm_mac_ctxt_remove(mvm, vif);
1293
1294 out_release:
1295         iwl_mvm_mac_ctxt_release(mvm, vif);
1296         mutex_unlock(&mvm->mutex);
1297 }
1298
1299 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1300 {
1301         return 0;
1302 }
1303
1304 struct iwl_mvm_mc_iter_data {
1305         struct iwl_mvm *mvm;
1306         int port_id;
1307 };
1308
1309 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1310                                       struct ieee80211_vif *vif)
1311 {
1312         struct iwl_mvm_mc_iter_data *data = _data;
1313         struct iwl_mvm *mvm = data->mvm;
1314         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1315         int ret, len;
1316
1317         /* if we don't have free ports, mcast frames will be dropped */
1318         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1319                 return;
1320
1321         if (vif->type != NL80211_IFTYPE_STATION ||
1322             !vif->bss_conf.assoc)
1323                 return;
1324
1325         cmd->port_id = data->port_id++;
1326         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1327         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1328
1329         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1330         if (ret)
1331                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1332 }
1333
1334 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1335 {
1336         struct iwl_mvm_mc_iter_data iter_data = {
1337                 .mvm = mvm,
1338         };
1339
1340         lockdep_assert_held(&mvm->mutex);
1341
1342         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1343                 return;
1344
1345         ieee80211_iterate_active_interfaces_atomic(
1346                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1347                 iwl_mvm_mc_iface_iterator, &iter_data);
1348 }
1349
1350 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1351                                      struct netdev_hw_addr_list *mc_list)
1352 {
1353         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1354         struct iwl_mcast_filter_cmd *cmd;
1355         struct netdev_hw_addr *addr;
1356         int addr_count;
1357         bool pass_all;
1358         int len;
1359
1360         addr_count = netdev_hw_addr_list_count(mc_list);
1361         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1362                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1363         if (pass_all)
1364                 addr_count = 0;
1365
1366         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1367         cmd = kzalloc(len, GFP_ATOMIC);
1368         if (!cmd)
1369                 return 0;
1370
1371         if (pass_all) {
1372                 cmd->pass_all = 1;
1373                 return (u64)(unsigned long)cmd;
1374         }
1375
1376         netdev_hw_addr_list_for_each(addr, mc_list) {
1377                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1378                                    cmd->count, addr->addr);
1379                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1380                        addr->addr, ETH_ALEN);
1381                 cmd->count++;
1382         }
1383
1384         return (u64)(unsigned long)cmd;
1385 }
1386
1387 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1388                                      unsigned int changed_flags,
1389                                      unsigned int *total_flags,
1390                                      u64 multicast)
1391 {
1392         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1393         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1394
1395         mutex_lock(&mvm->mutex);
1396
1397         /* replace previous configuration */
1398         kfree(mvm->mcast_filter_cmd);
1399         mvm->mcast_filter_cmd = cmd;
1400
1401         if (!cmd)
1402                 goto out;
1403
1404         iwl_mvm_recalc_multicast(mvm);
1405 out:
1406         mutex_unlock(&mvm->mutex);
1407         *total_flags = 0;
1408 }
1409
1410 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1411 struct iwl_bcast_iter_data {
1412         struct iwl_mvm *mvm;
1413         struct iwl_bcast_filter_cmd *cmd;
1414         u8 current_filter;
1415 };
1416
1417 static void
1418 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1419                          const struct iwl_fw_bcast_filter *in_filter,
1420                          struct iwl_fw_bcast_filter *out_filter)
1421 {
1422         struct iwl_fw_bcast_filter_attr *attr;
1423         int i;
1424
1425         memcpy(out_filter, in_filter, sizeof(*out_filter));
1426
1427         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1428                 attr = &out_filter->attrs[i];
1429
1430                 if (!attr->mask)
1431                         break;
1432
1433                 switch (attr->reserved1) {
1434                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1435                         if (vif->bss_conf.arp_addr_cnt != 1) {
1436                                 attr->mask = 0;
1437                                 continue;
1438                         }
1439
1440                         attr->val = vif->bss_conf.arp_addr_list[0];
1441                         break;
1442                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1443                         attr->val = *(__be32 *)&vif->addr[2];
1444                         break;
1445                 default:
1446                         break;
1447                 }
1448                 attr->reserved1 = 0;
1449                 out_filter->num_attrs++;
1450         }
1451 }
1452
1453 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1454                                           struct ieee80211_vif *vif)
1455 {
1456         struct iwl_bcast_iter_data *data = _data;
1457         struct iwl_mvm *mvm = data->mvm;
1458         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1459         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1460         struct iwl_fw_bcast_mac *bcast_mac;
1461         int i;
1462
1463         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1464                 return;
1465
1466         bcast_mac = &cmd->macs[mvmvif->id];
1467
1468         /*
1469          * enable filtering only for associated stations, but not for P2P
1470          * Clients
1471          */
1472         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1473             !vif->bss_conf.assoc)
1474                 return;
1475
1476         bcast_mac->default_discard = 1;
1477
1478         /* copy all configured filters */
1479         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1480                 /*
1481                  * Make sure we don't exceed our filters limit.
1482                  * if there is still a valid filter to be configured,
1483                  * be on the safe side and just allow bcast for this mac.
1484                  */
1485                 if (WARN_ON_ONCE(data->current_filter >=
1486                                  ARRAY_SIZE(cmd->filters))) {
1487                         bcast_mac->default_discard = 0;
1488                         bcast_mac->attached_filters = 0;
1489                         break;
1490                 }
1491
1492                 iwl_mvm_set_bcast_filter(vif,
1493                                          &mvm->bcast_filters[i],
1494                                          &cmd->filters[data->current_filter]);
1495
1496                 /* skip current filter if it contains no attributes */
1497                 if (!cmd->filters[data->current_filter].num_attrs)
1498                         continue;
1499
1500                 /* attach the filter to current mac */
1501                 bcast_mac->attached_filters |=
1502                                 cpu_to_le16(BIT(data->current_filter));
1503
1504                 data->current_filter++;
1505         }
1506 }
1507
1508 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1509                                     struct iwl_bcast_filter_cmd *cmd)
1510 {
1511         struct iwl_bcast_iter_data iter_data = {
1512                 .mvm = mvm,
1513                 .cmd = cmd,
1514         };
1515
1516         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1517                 return false;
1518
1519         memset(cmd, 0, sizeof(*cmd));
1520         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1521         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1522
1523 #ifdef CONFIG_IWLWIFI_DEBUGFS
1524         /* use debugfs filters/macs if override is configured */
1525         if (mvm->dbgfs_bcast_filtering.override) {
1526                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1527                        sizeof(cmd->filters));
1528                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1529                        sizeof(cmd->macs));
1530                 return true;
1531         }
1532 #endif
1533
1534         /* if no filters are configured, do nothing */
1535         if (!mvm->bcast_filters)
1536                 return false;
1537
1538         /* configure and attach these filters for each associated sta vif */
1539         ieee80211_iterate_active_interfaces(
1540                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1541                 iwl_mvm_bcast_filter_iterator, &iter_data);
1542
1543         return true;
1544 }
1545 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1546                                           struct ieee80211_vif *vif)
1547 {
1548         struct iwl_bcast_filter_cmd cmd;
1549
1550         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1551                 return 0;
1552
1553         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1554                 return 0;
1555
1556         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1557                                     sizeof(cmd), &cmd);
1558 }
1559 #else
1560 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1561                                                  struct ieee80211_vif *vif)
1562 {
1563         return 0;
1564 }
1565 #endif
1566
1567 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1568                                              struct ieee80211_vif *vif,
1569                                              struct ieee80211_bss_conf *bss_conf,
1570                                              u32 changes)
1571 {
1572         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1573         int ret;
1574
1575         /*
1576          * Re-calculate the tsf id, as the master-slave relations depend on the
1577          * beacon interval, which was not known when the station interface was
1578          * added.
1579          */
1580         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1581                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1582
1583         /*
1584          * If we're not associated yet, take the (new) BSSID before associating
1585          * so the firmware knows. If we're already associated, then use the old
1586          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1587          * branch for disassociation below.
1588          */
1589         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1590                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1591
1592         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1593         if (ret)
1594                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1595
1596         /* after sending it once, adopt mac80211 data */
1597         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1598         mvmvif->associated = bss_conf->assoc;
1599
1600         if (changes & BSS_CHANGED_ASSOC) {
1601                 if (bss_conf->assoc) {
1602                         /* add quota for this interface */
1603                         ret = iwl_mvm_update_quotas(mvm, NULL);
1604                         if (ret) {
1605                                 IWL_ERR(mvm, "failed to update quotas\n");
1606                                 return;
1607                         }
1608
1609                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1610                                      &mvm->status)) {
1611                                 /*
1612                                  * If we're restarting then the firmware will
1613                                  * obviously have lost synchronisation with
1614                                  * the AP. It will attempt to synchronise by
1615                                  * itself, but we can make it more reliable by
1616                                  * scheduling a session protection time event.
1617                                  *
1618                                  * The firmware needs to receive a beacon to
1619                                  * catch up with synchronisation, use 110% of
1620                                  * the beacon interval.
1621                                  *
1622                                  * Set a large maximum delay to allow for more
1623                                  * than a single interface.
1624                                  */
1625                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1626                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1627                                                         5 * dur, false);
1628                         }
1629
1630                         iwl_mvm_sf_update(mvm, vif, false);
1631                         iwl_mvm_power_vif_assoc(mvm, vif);
1632                         if (vif->p2p) {
1633                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1634                                 iwl_mvm_update_smps(mvm, vif,
1635                                                     IWL_MVM_SMPS_REQ_PROT,
1636                                                     IEEE80211_SMPS_DYNAMIC);
1637                         }
1638                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1639                         /*
1640                          * If update fails - SF might be running in associated
1641                          * mode while disassociated - which is forbidden.
1642                          */
1643                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1644                                   "Failed to update SF upon disassociation\n");
1645
1646                         /* remove AP station now that the MAC is unassoc */
1647                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1648                         if (ret)
1649                                 IWL_ERR(mvm, "failed to remove AP station\n");
1650
1651                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1652                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1653                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1654                         /* remove quota for this interface */
1655                         ret = iwl_mvm_update_quotas(mvm, NULL);
1656                         if (ret)
1657                                 IWL_ERR(mvm, "failed to update quotas\n");
1658
1659                         if (vif->p2p)
1660                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1661
1662                         /* this will take the cleared BSSID from bss_conf */
1663                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1664                         if (ret)
1665                                 IWL_ERR(mvm,
1666                                         "failed to update MAC %pM (clear after unassoc)\n",
1667                                         vif->addr);
1668                 }
1669
1670                 iwl_mvm_recalc_multicast(mvm);
1671                 iwl_mvm_configure_bcast_filter(mvm, vif);
1672
1673                 /* reset rssi values */
1674                 mvmvif->bf_data.ave_beacon_signal = 0;
1675
1676                 iwl_mvm_bt_coex_vif_change(mvm);
1677                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1678                                     IEEE80211_SMPS_AUTOMATIC);
1679         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1680                 /*
1681                  * We received a beacon _after_ association so
1682                  * remove the session protection.
1683                  */
1684                 iwl_mvm_remove_time_event(mvm, mvmvif,
1685                                           &mvmvif->time_event_data);
1686         }
1687
1688         if (changes & BSS_CHANGED_BEACON_INFO) {
1689                 iwl_mvm_sf_update(mvm, vif, false);
1690                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1691         }
1692
1693         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1694                 ret = iwl_mvm_power_update_mac(mvm);
1695                 if (ret)
1696                         IWL_ERR(mvm, "failed to update power mode\n");
1697         }
1698
1699         if (changes & BSS_CHANGED_TXPOWER) {
1700                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1701                                 bss_conf->txpower);
1702                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1703         }
1704
1705         if (changes & BSS_CHANGED_CQM) {
1706                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1707                 /* reset cqm events tracking */
1708                 mvmvif->bf_data.last_cqm_event = 0;
1709                 if (mvmvif->bf_data.bf_enabled) {
1710                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1711                         if (ret)
1712                                 IWL_ERR(mvm,
1713                                         "failed to update CQM thresholds\n");
1714                 }
1715         }
1716
1717         if (changes & BSS_CHANGED_ARP_FILTER) {
1718                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1719                 iwl_mvm_configure_bcast_filter(mvm, vif);
1720         }
1721 }
1722
1723 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1724                                  struct ieee80211_vif *vif)
1725 {
1726         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1727         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1728         int ret;
1729
1730         /*
1731          * iwl_mvm_mac_ctxt_add() might read directly from the device
1732          * (the system time), so make sure it is available.
1733          */
1734         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1735         if (ret)
1736                 return ret;
1737
1738         mutex_lock(&mvm->mutex);
1739
1740         /* Send the beacon template */
1741         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1742         if (ret)
1743                 goto out_unlock;
1744
1745         /*
1746          * Re-calculate the tsf id, as the master-slave relations depend on the
1747          * beacon interval, which was not known when the AP interface was added.
1748          */
1749         if (vif->type == NL80211_IFTYPE_AP)
1750                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1751
1752         /* Add the mac context */
1753         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1754         if (ret)
1755                 goto out_unlock;
1756
1757         /* Perform the binding */
1758         ret = iwl_mvm_binding_add_vif(mvm, vif);
1759         if (ret)
1760                 goto out_remove;
1761
1762         /* Send the bcast station. At this stage the TBTT and DTIM time events
1763          * are added and applied to the scheduler */
1764         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1765         if (ret)
1766                 goto out_unbind;
1767
1768         /* must be set before quota calculations */
1769         mvmvif->ap_ibss_active = true;
1770
1771         /* power updated needs to be done before quotas */
1772         iwl_mvm_power_update_mac(mvm);
1773
1774         ret = iwl_mvm_update_quotas(mvm, NULL);
1775         if (ret)
1776                 goto out_quota_failed;
1777
1778         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1779         if (vif->p2p && mvm->p2p_device_vif)
1780                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1781
1782         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1783
1784         iwl_mvm_bt_coex_vif_change(mvm);
1785
1786         /* we don't support TDLS during DCM */
1787         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1788                 iwl_mvm_teardown_tdls_peers(mvm);
1789
1790         mutex_unlock(&mvm->mutex);
1791         return 0;
1792
1793 out_quota_failed:
1794         iwl_mvm_power_update_mac(mvm);
1795         mvmvif->ap_ibss_active = false;
1796         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1797 out_unbind:
1798         iwl_mvm_binding_remove_vif(mvm, vif);
1799 out_remove:
1800         iwl_mvm_mac_ctxt_remove(mvm, vif);
1801 out_unlock:
1802         mutex_unlock(&mvm->mutex);
1803         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1804         return ret;
1805 }
1806
1807 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1808                                  struct ieee80211_vif *vif)
1809 {
1810         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1811         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1812
1813         iwl_mvm_prepare_mac_removal(mvm, vif);
1814
1815         mutex_lock(&mvm->mutex);
1816
1817         /* Handle AP stop while in CSA */
1818         if (rcu_access_pointer(mvm->csa_vif) == vif) {
1819                 iwl_mvm_remove_time_event(mvm, mvmvif,
1820                                           &mvmvif->time_event_data);
1821                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1822         }
1823
1824         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1825                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1826                 mvm->csa_tx_block_bcn_timeout = 0;
1827         }
1828
1829         mvmvif->ap_ibss_active = false;
1830         mvm->ap_last_beacon_gp2 = 0;
1831
1832         iwl_mvm_bt_coex_vif_change(mvm);
1833
1834         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1835
1836         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1837         if (vif->p2p && mvm->p2p_device_vif)
1838                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1839
1840         iwl_mvm_update_quotas(mvm, NULL);
1841         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1842         iwl_mvm_binding_remove_vif(mvm, vif);
1843
1844         iwl_mvm_power_update_mac(mvm);
1845
1846         iwl_mvm_mac_ctxt_remove(mvm, vif);
1847
1848         mutex_unlock(&mvm->mutex);
1849 }
1850
1851 static void
1852 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1853                                  struct ieee80211_vif *vif,
1854                                  struct ieee80211_bss_conf *bss_conf,
1855                                  u32 changes)
1856 {
1857         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1858
1859         /* Changes will be applied when the AP/IBSS is started */
1860         if (!mvmvif->ap_ibss_active)
1861                 return;
1862
1863         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1864                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1865             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1866                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1867
1868         /* Need to send a new beacon template to the FW */
1869         if (changes & BSS_CHANGED_BEACON &&
1870             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1871                 IWL_WARN(mvm, "Failed updating beacon data\n");
1872
1873         if (changes & BSS_CHANGED_TXPOWER) {
1874                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1875                                 bss_conf->txpower);
1876                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1877         }
1878
1879 }
1880
1881 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1882                                      struct ieee80211_vif *vif,
1883                                      struct ieee80211_bss_conf *bss_conf,
1884                                      u32 changes)
1885 {
1886         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1887
1888         /*
1889          * iwl_mvm_bss_info_changed_station() might call
1890          * iwl_mvm_protect_session(), which reads directly from
1891          * the device (the system time), so make sure it is available.
1892          */
1893         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1894                 return;
1895
1896         mutex_lock(&mvm->mutex);
1897
1898         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1899                 iwl_mvm_scan_offload_stop(mvm, true);
1900
1901         switch (vif->type) {
1902         case NL80211_IFTYPE_STATION:
1903                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1904                 break;
1905         case NL80211_IFTYPE_AP:
1906         case NL80211_IFTYPE_ADHOC:
1907                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1908                 break;
1909         default:
1910                 /* shouldn't happen */
1911                 WARN_ON_ONCE(1);
1912         }
1913
1914         mutex_unlock(&mvm->mutex);
1915         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1916 }
1917
1918 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1919                                           enum iwl_scan_status scan_type)
1920 {
1921         int ret;
1922         bool wait_for_handlers = false;
1923
1924         mutex_lock(&mvm->mutex);
1925
1926         if (mvm->scan_status != scan_type) {
1927                 ret = 0;
1928                 /* make sure there are no pending notifications */
1929                 wait_for_handlers = true;
1930                 goto out;
1931         }
1932
1933         switch (scan_type) {
1934         case IWL_MVM_SCAN_SCHED:
1935                 ret = iwl_mvm_scan_offload_stop(mvm, true);
1936                 break;
1937         case IWL_MVM_SCAN_OS:
1938                 ret = iwl_mvm_cancel_scan(mvm);
1939                 break;
1940         case IWL_MVM_SCAN_NONE:
1941         default:
1942                 WARN_ON_ONCE(1);
1943                 ret = -EINVAL;
1944                 break;
1945         }
1946         if (ret)
1947                 goto out;
1948
1949         wait_for_handlers = true;
1950 out:
1951         mutex_unlock(&mvm->mutex);
1952
1953         /* make sure we consume the completion notification */
1954         if (wait_for_handlers)
1955                 iwl_mvm_wait_for_async_handlers(mvm);
1956
1957         return ret;
1958 }
1959 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1960                                struct ieee80211_vif *vif,
1961                                struct ieee80211_scan_request *hw_req)
1962 {
1963         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1964         struct cfg80211_scan_request *req = &hw_req->req;
1965         int ret;
1966
1967         if (req->n_channels == 0 ||
1968             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1969                 return -EINVAL;
1970
1971         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1972                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1973                 if (ret)
1974                         return ret;
1975         }
1976
1977         mutex_lock(&mvm->mutex);
1978
1979         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1980                 ret = -EBUSY;
1981                 goto out;
1982         }
1983
1984         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1985
1986         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1987                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1988         else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1989                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1990         else
1991                 ret = iwl_mvm_scan_request(mvm, vif, req);
1992
1993         if (ret)
1994                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1995 out:
1996         mutex_unlock(&mvm->mutex);
1997         return ret;
1998 }
1999
2000 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2001                                        struct ieee80211_vif *vif)
2002 {
2003         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2004
2005         mutex_lock(&mvm->mutex);
2006
2007         iwl_mvm_cancel_scan(mvm);
2008
2009         mutex_unlock(&mvm->mutex);
2010 }
2011
2012 static void
2013 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2014                                   struct ieee80211_sta *sta, u16 tids,
2015                                   int num_frames,
2016                                   enum ieee80211_frame_release_type reason,
2017                                   bool more_data)
2018 {
2019         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2020
2021         /* Called when we need to transmit (a) frame(s) from mac80211 */
2022
2023         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2024                                           tids, more_data, false);
2025 }
2026
2027 static void
2028 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2029                                     struct ieee80211_sta *sta, u16 tids,
2030                                     int num_frames,
2031                                     enum ieee80211_frame_release_type reason,
2032                                     bool more_data)
2033 {
2034         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2035
2036         /* Called when we need to transmit (a) frame(s) from agg queue */
2037
2038         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2039                                           tids, more_data, true);
2040 }
2041
2042 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2043                                    struct ieee80211_vif *vif,
2044                                    enum sta_notify_cmd cmd,
2045                                    struct ieee80211_sta *sta)
2046 {
2047         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2048         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2049         int tid;
2050
2051         switch (cmd) {
2052         case STA_NOTIFY_SLEEP:
2053                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2054                         ieee80211_sta_block_awake(hw, sta, true);
2055                 spin_lock_bh(&mvmsta->lock);
2056                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2057                         struct iwl_mvm_tid_data *tid_data;
2058
2059                         tid_data = &mvmsta->tid_data[tid];
2060                         if (tid_data->state != IWL_AGG_ON &&
2061                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2062                                 continue;
2063                         if (iwl_mvm_tid_queued(tid_data) == 0)
2064                                 continue;
2065                         ieee80211_sta_set_buffered(sta, tid, true);
2066                 }
2067                 spin_unlock_bh(&mvmsta->lock);
2068                 /*
2069                  * The fw updates the STA to be asleep. Tx packets on the Tx
2070                  * queues to this station will not be transmitted. The fw will
2071                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2072                  */
2073                 break;
2074         case STA_NOTIFY_AWAKE:
2075                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2076                         break;
2077                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2078                 break;
2079         default:
2080                 break;
2081         }
2082 }
2083
2084 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2085                                        struct ieee80211_vif *vif,
2086                                        struct ieee80211_sta *sta)
2087 {
2088         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2089         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2090
2091         /*
2092          * This is called before mac80211 does RCU synchronisation,
2093          * so here we already invalidate our internal RCU-protected
2094          * station pointer. The rest of the code will thus no longer
2095          * be able to find the station this way, and we don't rely
2096          * on further RCU synchronisation after the sta_state()
2097          * callback deleted the station.
2098          */
2099         mutex_lock(&mvm->mutex);
2100         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2101                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2102                                    ERR_PTR(-ENOENT));
2103         mutex_unlock(&mvm->mutex);
2104 }
2105
2106 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2107                                  struct ieee80211_vif *vif,
2108                                  struct ieee80211_sta *sta,
2109                                  enum ieee80211_sta_state old_state,
2110                                  enum ieee80211_sta_state new_state)
2111 {
2112         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2113         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2114         int ret;
2115
2116         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2117                            sta->addr, old_state, new_state);
2118
2119         /* this would be a mac80211 bug ... but don't crash */
2120         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2121                 return -EINVAL;
2122
2123         /* if a STA is being removed, reuse its ID */
2124         flush_work(&mvm->sta_drained_wk);
2125
2126         mutex_lock(&mvm->mutex);
2127         if (old_state == IEEE80211_STA_NOTEXIST &&
2128             new_state == IEEE80211_STA_NONE) {
2129                 /*
2130                  * Firmware bug - it'll crash if the beacon interval is less
2131                  * than 16. We can't avoid connecting at all, so refuse the
2132                  * station state change, this will cause mac80211 to abandon
2133                  * attempts to connect to this AP, and eventually wpa_s will
2134                  * blacklist the AP...
2135                  */
2136                 if (vif->type == NL80211_IFTYPE_STATION &&
2137                     vif->bss_conf.beacon_int < 16) {
2138                         IWL_ERR(mvm,
2139                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2140                                 sta->addr, vif->bss_conf.beacon_int);
2141                         ret = -EINVAL;
2142                         goto out_unlock;
2143                 }
2144
2145                 if (sta->tdls &&
2146                     (vif->p2p ||
2147                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2148                                                 IWL_MVM_TDLS_STA_COUNT ||
2149                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2150                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2151                         ret = -EBUSY;
2152                         goto out_unlock;
2153                 }
2154
2155                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2156                 if (sta->tdls && ret == 0)
2157                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2158         } else if (old_state == IEEE80211_STA_NONE &&
2159                    new_state == IEEE80211_STA_AUTH) {
2160                 /*
2161                  * EBS may be disabled due to previous failures reported by FW.
2162                  * Reset EBS status here assuming environment has been changed.
2163                  */
2164                 mvm->last_ebs_successful = true;
2165                 ret = 0;
2166         } else if (old_state == IEEE80211_STA_AUTH &&
2167                    new_state == IEEE80211_STA_ASSOC) {
2168                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2169                 if (ret == 0)
2170                         iwl_mvm_rs_rate_init(mvm, sta,
2171                                              mvmvif->phy_ctxt->channel->band,
2172                                              true);
2173         } else if (old_state == IEEE80211_STA_ASSOC &&
2174                    new_state == IEEE80211_STA_AUTHORIZED) {
2175
2176                 /* we don't support TDLS during DCM */
2177                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2178                         iwl_mvm_teardown_tdls_peers(mvm);
2179
2180                 /* enable beacon filtering */
2181                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2182                 ret = 0;
2183         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2184                    new_state == IEEE80211_STA_ASSOC) {
2185                 /* disable beacon filtering */
2186                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2187                 ret = 0;
2188         } else if (old_state == IEEE80211_STA_ASSOC &&
2189                    new_state == IEEE80211_STA_AUTH) {
2190                 ret = 0;
2191         } else if (old_state == IEEE80211_STA_AUTH &&
2192                    new_state == IEEE80211_STA_NONE) {
2193                 ret = 0;
2194         } else if (old_state == IEEE80211_STA_NONE &&
2195                    new_state == IEEE80211_STA_NOTEXIST) {
2196                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2197                 if (sta->tdls)
2198                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2199         } else {
2200                 ret = -EIO;
2201         }
2202  out_unlock:
2203         mutex_unlock(&mvm->mutex);
2204
2205         if (sta->tdls && ret == 0) {
2206                 if (old_state == IEEE80211_STA_NOTEXIST &&
2207                     new_state == IEEE80211_STA_NONE)
2208                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2209                 else if (old_state == IEEE80211_STA_NONE &&
2210                          new_state == IEEE80211_STA_NOTEXIST)
2211                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2212         }
2213
2214         return ret;
2215 }
2216
2217 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2218 {
2219         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2220
2221         mvm->rts_threshold = value;
2222
2223         return 0;
2224 }
2225
2226 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2227                                   struct ieee80211_vif *vif,
2228                                   struct ieee80211_sta *sta, u32 changed)
2229 {
2230         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2231
2232         if (vif->type == NL80211_IFTYPE_STATION &&
2233             changed & IEEE80211_RC_NSS_CHANGED)
2234                 iwl_mvm_sf_update(mvm, vif, false);
2235 }
2236
2237 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2238                                struct ieee80211_vif *vif, u16 ac,
2239                                const struct ieee80211_tx_queue_params *params)
2240 {
2241         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2242         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2243
2244         mvmvif->queue_params[ac] = *params;
2245
2246         /*
2247          * No need to update right away, we'll get BSS_CHANGED_QOS
2248          * The exception is P2P_DEVICE interface which needs immediate update.
2249          */
2250         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2251                 int ret;
2252
2253                 mutex_lock(&mvm->mutex);
2254                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2255                 mutex_unlock(&mvm->mutex);
2256                 return ret;
2257         }
2258         return 0;
2259 }
2260
2261 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2262                                       struct ieee80211_vif *vif)
2263 {
2264         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2265         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2266                            200 + vif->bss_conf.beacon_int);
2267         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2268                                100 + vif->bss_conf.beacon_int);
2269
2270         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2271                 return;
2272
2273         /*
2274          * iwl_mvm_protect_session() reads directly from the device
2275          * (the system time), so make sure it is available.
2276          */
2277         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2278                 return;
2279
2280         mutex_lock(&mvm->mutex);
2281         /* Try really hard to protect the session and hear a beacon */
2282         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2283         mutex_unlock(&mvm->mutex);
2284
2285         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2286 }
2287
2288 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2289                                         struct ieee80211_vif *vif,
2290                                         struct cfg80211_sched_scan_request *req,
2291                                         struct ieee80211_scan_ies *ies)
2292 {
2293         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2294         int ret;
2295
2296         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2297                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2298                 if (ret)
2299                         return ret;
2300         }
2301
2302         mutex_lock(&mvm->mutex);
2303
2304         /* Newest FW fixes sched scan while connected on another interface */
2305         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2306                 if (!vif->bss_conf.idle) {
2307                         ret = -EBUSY;
2308                         goto out;
2309                 }
2310         } else if (!iwl_mvm_is_idle(mvm)) {
2311                 ret = -EBUSY;
2312                 goto out;
2313         }
2314
2315         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2316                 ret = -EBUSY;
2317                 goto out;
2318         }
2319
2320         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2321         if (ret)
2322                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2323
2324 out:
2325         mutex_unlock(&mvm->mutex);
2326         return ret;
2327 }
2328
2329 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2330                                        struct ieee80211_vif *vif)
2331 {
2332         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2333         int ret;
2334
2335         mutex_lock(&mvm->mutex);
2336         ret = iwl_mvm_scan_offload_stop(mvm, false);
2337         mutex_unlock(&mvm->mutex);
2338         iwl_mvm_wait_for_async_handlers(mvm);
2339
2340         return ret;
2341
2342 }
2343
2344 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2345                                enum set_key_cmd cmd,
2346                                struct ieee80211_vif *vif,
2347                                struct ieee80211_sta *sta,
2348                                struct ieee80211_key_conf *key)
2349 {
2350         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2351         int ret;
2352
2353         if (iwlwifi_mod_params.sw_crypto) {
2354                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2355                 return -EOPNOTSUPP;
2356         }
2357
2358         switch (key->cipher) {
2359         case WLAN_CIPHER_SUITE_TKIP:
2360                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2361                 /* fall-through */
2362         case WLAN_CIPHER_SUITE_CCMP:
2363                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2364                 break;
2365         case WLAN_CIPHER_SUITE_AES_CMAC:
2366                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2367                 break;
2368         case WLAN_CIPHER_SUITE_WEP40:
2369         case WLAN_CIPHER_SUITE_WEP104:
2370                 /* For non-client mode, only use WEP keys for TX as we probably
2371                  * don't have a station yet anyway and would then have to keep
2372                  * track of the keys, linking them to each of the clients/peers
2373                  * as they appear. For now, don't do that, for performance WEP
2374                  * offload doesn't really matter much, but we need it for some
2375                  * other offload features in client mode.
2376                  */
2377                 if (vif->type != NL80211_IFTYPE_STATION)
2378                         return 0;
2379                 break;
2380         default:
2381                 /* currently FW supports only one optional cipher scheme */
2382                 if (hw->n_cipher_schemes &&
2383                     hw->cipher_schemes->cipher == key->cipher)
2384                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2385                 else
2386                         return -EOPNOTSUPP;
2387         }
2388
2389         mutex_lock(&mvm->mutex);
2390
2391         switch (cmd) {
2392         case SET_KEY:
2393                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2394                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2395                         /*
2396                          * GTK on AP interface is a TX-only key, return 0;
2397                          * on IBSS they're per-station and because we're lazy
2398                          * we don't support them for RX, so do the same.
2399                          */
2400                         ret = 0;
2401                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2402                         break;
2403                 }
2404
2405                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2406                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2407                 if (ret) {
2408                         IWL_WARN(mvm, "set key failed\n");
2409                         /*
2410                          * can't add key for RX, but we don't need it
2411                          * in the device for TX so still return 0
2412                          */
2413                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2414                         ret = 0;
2415                 }
2416
2417                 break;
2418         case DISABLE_KEY:
2419                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2420                         ret = 0;
2421                         break;
2422                 }
2423
2424                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2425                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2426                 break;
2427         default:
2428                 ret = -EINVAL;
2429         }
2430
2431         mutex_unlock(&mvm->mutex);
2432         return ret;
2433 }
2434
2435 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2436                                         struct ieee80211_vif *vif,
2437                                         struct ieee80211_key_conf *keyconf,
2438                                         struct ieee80211_sta *sta,
2439                                         u32 iv32, u16 *phase1key)
2440 {
2441         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2442
2443         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2444                 return;
2445
2446         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2447 }
2448
2449
2450 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2451                                struct iwl_rx_packet *pkt, void *data)
2452 {
2453         struct iwl_mvm *mvm =
2454                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2455         struct iwl_hs20_roc_res *resp;
2456         int resp_len = iwl_rx_packet_payload_len(pkt);
2457         struct iwl_mvm_time_event_data *te_data = data;
2458
2459         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2460                 return true;
2461
2462         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2463                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2464                 return true;
2465         }
2466
2467         resp = (void *)pkt->data;
2468
2469         IWL_DEBUG_TE(mvm,
2470                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2471                      resp->status, resp->event_unique_id);
2472
2473         te_data->uid = le32_to_cpu(resp->event_unique_id);
2474         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2475                      te_data->uid);
2476
2477         spin_lock_bh(&mvm->time_event_lock);
2478         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2479         spin_unlock_bh(&mvm->time_event_lock);
2480
2481         return true;
2482 }
2483
2484 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2485 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2486                                     struct ieee80211_channel *channel,
2487                                     struct ieee80211_vif *vif,
2488                                     int duration)
2489 {
2490         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2491         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2492         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2493         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2494         struct iwl_notification_wait wait_time_event;
2495         struct iwl_hs20_roc_req aux_roc_req = {
2496                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2497                 .id_and_color =
2498                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2499                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2500                 /* Set the channel info data */
2501                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2502                         PHY_BAND_24 : PHY_BAND_5,
2503                 .channel_info.channel = channel->hw_value,
2504                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2505                 /* Set the time and duration */
2506                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2507                 .apply_time_max_delay =
2508                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2509                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2510          };
2511
2512         /* Set the node address */
2513         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2514
2515         lockdep_assert_held(&mvm->mutex);
2516
2517         spin_lock_bh(&mvm->time_event_lock);
2518
2519         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2520                 spin_unlock_bh(&mvm->time_event_lock);
2521                 return -EIO;
2522         }
2523
2524         te_data->vif = vif;
2525         te_data->duration = duration;
2526         te_data->id = HOT_SPOT_CMD;
2527
2528         spin_unlock_bh(&mvm->time_event_lock);
2529
2530         /*
2531          * Use a notification wait, which really just processes the
2532          * command response and doesn't wait for anything, in order
2533          * to be able to process the response and get the UID inside
2534          * the RX path. Using CMD_WANT_SKB doesn't work because it
2535          * stores the buffer and then wakes up this thread, by which
2536          * time another notification (that the time event started)
2537          * might already be processed unsuccessfully.
2538          */
2539         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2540                                    time_event_response,
2541                                    ARRAY_SIZE(time_event_response),
2542                                    iwl_mvm_rx_aux_roc, te_data);
2543
2544         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2545                                    &aux_roc_req);
2546
2547         if (res) {
2548                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2549                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2550                 goto out_clear_te;
2551         }
2552
2553         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2554         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2555         /* should never fail */
2556         WARN_ON_ONCE(res);
2557
2558         if (res) {
2559  out_clear_te:
2560                 spin_lock_bh(&mvm->time_event_lock);
2561                 iwl_mvm_te_clear_data(mvm, te_data);
2562                 spin_unlock_bh(&mvm->time_event_lock);
2563         }
2564
2565         return res;
2566 }
2567
2568 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2569                        struct ieee80211_vif *vif,
2570                        struct ieee80211_channel *channel,
2571                        int duration,
2572                        enum ieee80211_roc_type type)
2573 {
2574         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2576         struct cfg80211_chan_def chandef;
2577         struct iwl_mvm_phy_ctxt *phy_ctxt;
2578         int ret, i;
2579
2580         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2581                            duration, type);
2582
2583         mutex_lock(&mvm->mutex);
2584
2585         switch (vif->type) {
2586         case NL80211_IFTYPE_STATION:
2587                 if (mvm->fw->ucode_capa.capa[0] &
2588                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2589                         /* Use aux roc framework (HS20) */
2590                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2591                                                        vif, duration);
2592                         goto out_unlock;
2593                 }
2594                 IWL_ERR(mvm, "hotspot not supported\n");
2595                 ret = -EINVAL;
2596                 goto out_unlock;
2597         case NL80211_IFTYPE_P2P_DEVICE:
2598                 /* handle below */
2599                 break;
2600         default:
2601                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2602                 ret = -EINVAL;
2603                 goto out_unlock;
2604         }
2605
2606         for (i = 0; i < NUM_PHY_CTX; i++) {
2607                 phy_ctxt = &mvm->phy_ctxts[i];
2608                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2609                         continue;
2610
2611                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2612                         /*
2613                          * Unbind the P2P_DEVICE from the current PHY context,
2614                          * and if the PHY context is not used remove it.
2615                          */
2616                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2617                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2618                                 goto out_unlock;
2619
2620                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2621
2622                         /* Bind the P2P_DEVICE to the current PHY Context */
2623                         mvmvif->phy_ctxt = phy_ctxt;
2624
2625                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2626                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2627                                 goto out_unlock;
2628
2629                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2630                         goto schedule_time_event;
2631                 }
2632         }
2633
2634         /* Need to update the PHY context only if the ROC channel changed */
2635         if (channel == mvmvif->phy_ctxt->channel)
2636                 goto schedule_time_event;
2637
2638         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2639
2640         /*
2641          * Change the PHY context configuration as it is currently referenced
2642          * only by the P2P Device MAC
2643          */
2644         if (mvmvif->phy_ctxt->ref == 1) {
2645                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2646                                                &chandef, 1, 1);
2647                 if (ret)
2648                         goto out_unlock;
2649         } else {
2650                 /*
2651                  * The PHY context is shared with other MACs. Need to remove the
2652                  * P2P Device from the binding, allocate an new PHY context and
2653                  * create a new binding
2654                  */
2655                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2656                 if (!phy_ctxt) {
2657                         ret = -ENOSPC;
2658                         goto out_unlock;
2659                 }
2660
2661                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2662                                                1, 1);
2663                 if (ret) {
2664                         IWL_ERR(mvm, "Failed to change PHY context\n");
2665                         goto out_unlock;
2666                 }
2667
2668                 /* Unbind the P2P_DEVICE from the current PHY context */
2669                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2670                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2671                         goto out_unlock;
2672
2673                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2674
2675                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2676                 mvmvif->phy_ctxt = phy_ctxt;
2677
2678                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2679                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2680                         goto out_unlock;
2681
2682                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2683         }
2684
2685 schedule_time_event:
2686         /* Schedule the time events */
2687         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2688
2689 out_unlock:
2690         mutex_unlock(&mvm->mutex);
2691         IWL_DEBUG_MAC80211(mvm, "leave\n");
2692         return ret;
2693 }
2694
2695 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2696 {
2697         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2698
2699         IWL_DEBUG_MAC80211(mvm, "enter\n");
2700
2701         mutex_lock(&mvm->mutex);
2702         iwl_mvm_stop_roc(mvm);
2703         mutex_unlock(&mvm->mutex);
2704
2705         IWL_DEBUG_MAC80211(mvm, "leave\n");
2706         return 0;
2707 }
2708
2709 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2710                                  struct ieee80211_chanctx_conf *ctx)
2711 {
2712         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2713         struct iwl_mvm_phy_ctxt *phy_ctxt;
2714         int ret;
2715
2716         lockdep_assert_held(&mvm->mutex);
2717
2718         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2719
2720         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2721         if (!phy_ctxt) {
2722                 ret = -ENOSPC;
2723                 goto out;
2724         }
2725
2726         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2727                                        ctx->rx_chains_static,
2728                                        ctx->rx_chains_dynamic);
2729         if (ret) {
2730                 IWL_ERR(mvm, "Failed to add PHY context\n");
2731                 goto out;
2732         }
2733
2734         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2735         *phy_ctxt_id = phy_ctxt->id;
2736 out:
2737         return ret;
2738 }
2739
2740 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2741                                struct ieee80211_chanctx_conf *ctx)
2742 {
2743         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2744         int ret;
2745
2746         mutex_lock(&mvm->mutex);
2747         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2748         mutex_unlock(&mvm->mutex);
2749
2750         return ret;
2751 }
2752
2753 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2754                                      struct ieee80211_chanctx_conf *ctx)
2755 {
2756         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2757         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2758
2759         lockdep_assert_held(&mvm->mutex);
2760
2761         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2762 }
2763
2764 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2765                                    struct ieee80211_chanctx_conf *ctx)
2766 {
2767         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2768
2769         mutex_lock(&mvm->mutex);
2770         __iwl_mvm_remove_chanctx(mvm, ctx);
2771         mutex_unlock(&mvm->mutex);
2772 }
2773
2774 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2775                                    struct ieee80211_chanctx_conf *ctx,
2776                                    u32 changed)
2777 {
2778         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2779         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2780         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2781
2782         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2783                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2784                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2785                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2786                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2787                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2788                       phy_ctxt->ref, changed))
2789                 return;
2790
2791         mutex_lock(&mvm->mutex);
2792         iwl_mvm_bt_coex_vif_change(mvm);
2793         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2794                                  ctx->rx_chains_static,
2795                                  ctx->rx_chains_dynamic);
2796         mutex_unlock(&mvm->mutex);
2797 }
2798
2799 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2800                                         struct ieee80211_vif *vif,
2801                                         struct ieee80211_chanctx_conf *ctx,
2802                                         bool switching_chanctx)
2803 {
2804         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2805         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2806         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2807         int ret;
2808
2809         lockdep_assert_held(&mvm->mutex);
2810
2811         mvmvif->phy_ctxt = phy_ctxt;
2812
2813         switch (vif->type) {
2814         case NL80211_IFTYPE_AP:
2815                 /* only needed if we're switching chanctx (i.e. during CSA) */
2816                 if (switching_chanctx) {
2817                         mvmvif->ap_ibss_active = true;
2818                         break;
2819                 }
2820         case NL80211_IFTYPE_ADHOC:
2821                 /*
2822                  * The AP binding flow is handled as part of the start_ap flow
2823                  * (in bss_info_changed), similarly for IBSS.
2824                  */
2825                 ret = 0;
2826                 goto out;
2827         case NL80211_IFTYPE_STATION:
2828                 break;
2829         case NL80211_IFTYPE_MONITOR:
2830                 /* always disable PS when a monitor interface is active */
2831                 mvmvif->ps_disabled = true;
2832                 break;
2833         default:
2834                 ret = -EINVAL;
2835                 goto out;
2836         }
2837
2838         ret = iwl_mvm_binding_add_vif(mvm, vif);
2839         if (ret)
2840                 goto out;
2841
2842         /*
2843          * Power state must be updated before quotas,
2844          * otherwise fw will complain.
2845          */
2846         iwl_mvm_power_update_mac(mvm);
2847
2848         /* Setting the quota at this stage is only required for monitor
2849          * interfaces. For the other types, the bss_info changed flow
2850          * will handle quota settings.
2851          */
2852         if (vif->type == NL80211_IFTYPE_MONITOR) {
2853                 mvmvif->monitor_active = true;
2854                 ret = iwl_mvm_update_quotas(mvm, NULL);
2855                 if (ret)
2856                         goto out_remove_binding;
2857         }
2858
2859         /* Handle binding during CSA */
2860         if (vif->type == NL80211_IFTYPE_AP) {
2861                 iwl_mvm_update_quotas(mvm, NULL);
2862                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2863         }
2864
2865         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
2866                 u32 duration = 2 * vif->bss_conf.beacon_int;
2867
2868                 /* iwl_mvm_protect_session() reads directly from the
2869                  * device (the system time), so make sure it is
2870                  * available.
2871                  */
2872                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2873                 if (ret)
2874                         goto out_remove_binding;
2875
2876                 /* Protect the session to make sure we hear the first
2877                  * beacon on the new channel.
2878                  */
2879                 iwl_mvm_protect_session(mvm, vif, duration, duration,
2880                                         vif->bss_conf.beacon_int / 2,
2881                                         true);
2882
2883                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2884
2885                 iwl_mvm_update_quotas(mvm, NULL);
2886         }
2887
2888         goto out;
2889
2890 out_remove_binding:
2891         iwl_mvm_binding_remove_vif(mvm, vif);
2892         iwl_mvm_power_update_mac(mvm);
2893 out:
2894         if (ret)
2895                 mvmvif->phy_ctxt = NULL;
2896         return ret;
2897 }
2898 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2899                                       struct ieee80211_vif *vif,
2900                                       struct ieee80211_chanctx_conf *ctx)
2901 {
2902         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2903         int ret;
2904
2905         mutex_lock(&mvm->mutex);
2906         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2907         mutex_unlock(&mvm->mutex);
2908
2909         return ret;
2910 }
2911
2912 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2913                                            struct ieee80211_vif *vif,
2914                                            struct ieee80211_chanctx_conf *ctx,
2915                                            bool switching_chanctx)
2916 {
2917         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2918         struct ieee80211_vif *disabled_vif = NULL;
2919
2920         lockdep_assert_held(&mvm->mutex);
2921
2922         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2923
2924         switch (vif->type) {
2925         case NL80211_IFTYPE_ADHOC:
2926                 goto out;
2927         case NL80211_IFTYPE_MONITOR:
2928                 mvmvif->monitor_active = false;
2929                 mvmvif->ps_disabled = false;
2930                 break;
2931         case NL80211_IFTYPE_AP:
2932                 /* This part is triggered only during CSA */
2933                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
2934                         goto out;
2935
2936                 mvmvif->csa_countdown = false;
2937
2938                 /* Set CS bit on all the stations */
2939                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2940
2941                 /* Save blocked iface, the timeout is set on the next beacon */
2942                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2943
2944                 mvmvif->ap_ibss_active = false;
2945                 break;
2946         case NL80211_IFTYPE_STATION:
2947                 if (!switching_chanctx)
2948                         break;
2949
2950                 disabled_vif = vif;
2951
2952                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2953                 break;
2954         default:
2955                 break;
2956         }
2957
2958         iwl_mvm_update_quotas(mvm, disabled_vif);
2959         iwl_mvm_binding_remove_vif(mvm, vif);
2960
2961 out:
2962         mvmvif->phy_ctxt = NULL;
2963         iwl_mvm_power_update_mac(mvm);
2964 }
2965
2966 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2967                                          struct ieee80211_vif *vif,
2968                                          struct ieee80211_chanctx_conf *ctx)
2969 {
2970         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2971
2972         mutex_lock(&mvm->mutex);
2973         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2974         mutex_unlock(&mvm->mutex);
2975 }
2976
2977 static int
2978 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
2979                                 struct ieee80211_vif_chanctx_switch *vifs)
2980 {
2981         int ret;
2982
2983         mutex_lock(&mvm->mutex);
2984         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2985         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2986
2987         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2988         if (ret) {
2989                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2990                 goto out_reassign;
2991         }
2992
2993         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2994                                            true);
2995         if (ret) {
2996                 IWL_ERR(mvm,
2997                         "failed to assign new_ctx during channel switch\n");
2998                 goto out_remove;
2999         }
3000
3001         /* we don't support TDLS during DCM - can be caused by channel switch */
3002         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3003                 iwl_mvm_teardown_tdls_peers(mvm);
3004
3005         goto out;
3006
3007 out_remove:
3008         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3009
3010 out_reassign:
3011         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3012                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3013                 goto out_restart;
3014         }
3015
3016         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3017                                          true)) {
3018                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3019                 goto out_restart;
3020         }
3021
3022         goto out;
3023
3024 out_restart:
3025         /* things keep failing, better restart the hw */
3026         iwl_mvm_nic_restart(mvm, false);
3027
3028 out:
3029         mutex_unlock(&mvm->mutex);
3030
3031         return ret;
3032 }
3033
3034 static int
3035 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3036                                     struct ieee80211_vif_chanctx_switch *vifs)
3037 {
3038         int ret;
3039
3040         mutex_lock(&mvm->mutex);
3041         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3042
3043         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3044                                            true);
3045         if (ret) {
3046                 IWL_ERR(mvm,
3047                         "failed to assign new_ctx during channel switch\n");
3048                 goto out_reassign;
3049         }
3050
3051         goto out;
3052
3053 out_reassign:
3054         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3055                                          true)) {
3056                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3057                 goto out_restart;
3058         }
3059
3060         goto out;
3061
3062 out_restart:
3063         /* things keep failing, better restart the hw */
3064         iwl_mvm_nic_restart(mvm, false);
3065
3066 out:
3067         mutex_unlock(&mvm->mutex);
3068
3069         return ret;
3070 }
3071
3072 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3073                                       struct ieee80211_vif_chanctx_switch *vifs,
3074                                       int n_vifs,
3075                                       enum ieee80211_chanctx_switch_mode mode)
3076 {
3077         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3078         int ret;
3079
3080         /* we only support a single-vif right now */
3081         if (n_vifs > 1)
3082                 return -EOPNOTSUPP;
3083
3084         switch (mode) {
3085         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3086                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3087                 break;
3088         case CHANCTX_SWMODE_REASSIGN_VIF:
3089                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3090                 break;
3091         default:
3092                 ret = -EOPNOTSUPP;
3093                 break;
3094         }
3095
3096         return ret;
3097 }
3098
3099 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3100                            struct ieee80211_sta *sta,
3101                            bool set)
3102 {
3103         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3104         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3105
3106         if (!mvm_sta || !mvm_sta->vif) {
3107                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3108                 return -EINVAL;
3109         }
3110
3111         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3112 }
3113
3114 #ifdef CONFIG_NL80211_TESTMODE
3115 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3116         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3117         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3118         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3119 };
3120
3121 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3122                                       struct ieee80211_vif *vif,
3123                                       void *data, int len)
3124 {
3125         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3126         int err;
3127         u32 noa_duration;
3128
3129         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3130         if (err)
3131                 return err;
3132
3133         if (!tb[IWL_MVM_TM_ATTR_CMD])
3134                 return -EINVAL;
3135
3136         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3137         case IWL_MVM_TM_CMD_SET_NOA:
3138                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3139                     !vif->bss_conf.enable_beacon ||
3140                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3141                         return -EINVAL;
3142
3143                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3144                 if (noa_duration >= vif->bss_conf.beacon_int)
3145                         return -EINVAL;
3146
3147                 mvm->noa_duration = noa_duration;
3148                 mvm->noa_vif = vif;
3149
3150                 return iwl_mvm_update_quotas(mvm, NULL);
3151         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3152                 /* must be associated client vif - ignore authorized */
3153                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3154                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3155                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3156                         return -EINVAL;
3157
3158                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3159                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3160                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3161         }
3162
3163         return -EOPNOTSUPP;
3164 }
3165
3166 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3167                                     struct ieee80211_vif *vif,
3168                                     void *data, int len)
3169 {
3170         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3171         int err;
3172
3173         mutex_lock(&mvm->mutex);
3174         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3175         mutex_unlock(&mvm->mutex);
3176
3177         return err;
3178 }
3179 #endif
3180
3181 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3182                                    struct ieee80211_vif *vif,
3183                                    struct ieee80211_channel_switch *chsw)
3184 {
3185         /* By implementing this operation, we prevent mac80211 from
3186          * starting its own channel switch timer, so that we can call
3187          * ieee80211_chswitch_done() ourselves at the right time
3188          * (which is when the absence time event starts).
3189          */
3190
3191         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3192                            "dummy channel switch op\n");
3193 }
3194
3195 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3196                                       struct ieee80211_vif *vif,
3197                                       struct ieee80211_channel_switch *chsw)
3198 {
3199         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3200         struct ieee80211_vif *csa_vif;
3201         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3202         u32 apply_time;
3203         int ret;
3204
3205         mutex_lock(&mvm->mutex);
3206
3207         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3208                            chsw->chandef.center_freq1);
3209
3210         switch (vif->type) {
3211         case NL80211_IFTYPE_AP:
3212                 csa_vif =
3213                         rcu_dereference_protected(mvm->csa_vif,
3214                                                   lockdep_is_held(&mvm->mutex));
3215                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3216                               "Another CSA is already in progress")) {
3217                         ret = -EBUSY;
3218                         goto out_unlock;
3219                 }
3220
3221                 rcu_assign_pointer(mvm->csa_vif, vif);
3222
3223                 if (WARN_ONCE(mvmvif->csa_countdown,
3224                               "Previous CSA countdown didn't complete")) {
3225                         ret = -EBUSY;
3226                         goto out_unlock;
3227                 }
3228
3229                 break;
3230         case NL80211_IFTYPE_STATION:
3231                 /* Schedule the time event to a bit before beacon 1,
3232                  * to make sure we're in the new channel when the
3233                  * GO/AP arrives.
3234                  */
3235                 apply_time = chsw->device_timestamp +
3236                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3237                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3238
3239                 if (chsw->block_tx)
3240                         iwl_mvm_csa_client_absent(mvm, vif);
3241
3242                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3243                                             apply_time);
3244                 if (mvmvif->bf_data.bf_enabled) {
3245                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3246                         if (ret)
3247                                 goto out_unlock;
3248                 }
3249
3250                 break;
3251         default:
3252                 break;
3253         }
3254
3255         mvmvif->ps_disabled = true;
3256
3257         ret = iwl_mvm_power_update_ps(mvm);
3258         if (ret)
3259                 goto out_unlock;
3260
3261         /* we won't be on this channel any longer */
3262         iwl_mvm_teardown_tdls_peers(mvm);
3263
3264 out_unlock:
3265         mutex_unlock(&mvm->mutex);
3266
3267         return ret;
3268 }
3269
3270 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3271                                        struct ieee80211_vif *vif)
3272 {
3273         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3274         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3275         int ret;
3276
3277         mutex_lock(&mvm->mutex);
3278
3279         if (vif->type == NL80211_IFTYPE_STATION) {
3280                 struct iwl_mvm_sta *mvmsta;
3281
3282                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3283                                                           mvmvif->ap_sta_id);
3284
3285                 if (WARN_ON(!mvmsta)) {
3286                         ret = -EIO;
3287                         goto out_unlock;
3288                 }
3289
3290                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3291
3292                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3293
3294                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3295                 if (ret)
3296                         goto out_unlock;
3297
3298                 iwl_mvm_stop_session_protection(mvm, vif);
3299         }
3300
3301         mvmvif->ps_disabled = false;
3302
3303         ret = iwl_mvm_power_update_ps(mvm);
3304
3305 out_unlock:
3306         mutex_unlock(&mvm->mutex);
3307
3308         return ret;
3309 }
3310
3311 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3312                               struct ieee80211_vif *vif, u32 queues, bool drop)
3313 {
3314         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3315         struct iwl_mvm_vif *mvmvif;
3316         struct iwl_mvm_sta *mvmsta;
3317         struct ieee80211_sta *sta;
3318         int i;
3319         u32 msk = 0;
3320
3321         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3322                 return;
3323
3324         mutex_lock(&mvm->mutex);
3325         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3326
3327         /* flush the AP-station and all TDLS peers */
3328         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3329                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3330                                                 lockdep_is_held(&mvm->mutex));
3331                 if (IS_ERR_OR_NULL(sta))
3332                         continue;
3333
3334                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3335                 if (mvmsta->vif != vif)
3336                         continue;
3337
3338                 /* make sure only TDLS peers or the AP are flushed */
3339                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3340
3341                 msk |= mvmsta->tfd_queue_msk;
3342         }
3343
3344         if (drop) {
3345                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3346                         IWL_ERR(mvm, "flush request fail\n");
3347                 mutex_unlock(&mvm->mutex);
3348         } else {
3349                 mutex_unlock(&mvm->mutex);
3350
3351                 /* this can take a while, and we may need/want other operations
3352                  * to succeed while doing this, so do it without the mutex held
3353                  */
3354                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3355         }
3356 }
3357
3358 const struct ieee80211_ops iwl_mvm_hw_ops = {
3359         .tx = iwl_mvm_mac_tx,
3360         .ampdu_action = iwl_mvm_mac_ampdu_action,
3361         .start = iwl_mvm_mac_start,
3362         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3363         .stop = iwl_mvm_mac_stop,
3364         .add_interface = iwl_mvm_mac_add_interface,
3365         .remove_interface = iwl_mvm_mac_remove_interface,
3366         .config = iwl_mvm_mac_config,
3367         .prepare_multicast = iwl_mvm_prepare_multicast,
3368         .configure_filter = iwl_mvm_configure_filter,
3369         .bss_info_changed = iwl_mvm_bss_info_changed,
3370         .hw_scan = iwl_mvm_mac_hw_scan,
3371         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3372         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3373         .sta_state = iwl_mvm_mac_sta_state,
3374         .sta_notify = iwl_mvm_mac_sta_notify,
3375         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3376         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3377         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3378         .sta_rc_update = iwl_mvm_sta_rc_update,
3379         .conf_tx = iwl_mvm_mac_conf_tx,
3380         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3381         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3382         .flush = iwl_mvm_mac_flush,
3383         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3384         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3385         .set_key = iwl_mvm_mac_set_key,
3386         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3387         .remain_on_channel = iwl_mvm_roc,
3388         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3389         .add_chanctx = iwl_mvm_add_chanctx,
3390         .remove_chanctx = iwl_mvm_remove_chanctx,
3391         .change_chanctx = iwl_mvm_change_chanctx,
3392         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3393         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3394         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3395
3396         .start_ap = iwl_mvm_start_ap_ibss,
3397         .stop_ap = iwl_mvm_stop_ap_ibss,
3398         .join_ibss = iwl_mvm_start_ap_ibss,
3399         .leave_ibss = iwl_mvm_stop_ap_ibss,
3400
3401         .set_tim = iwl_mvm_set_tim,
3402
3403         .channel_switch = iwl_mvm_channel_switch,
3404         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3405         .post_channel_switch = iwl_mvm_post_channel_switch,
3406
3407         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3408         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3409         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3410
3411         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3412
3413 #ifdef CONFIG_PM_SLEEP
3414         /* look at d3.c */
3415         .suspend = iwl_mvm_suspend,
3416         .resume = iwl_mvm_resume,
3417         .set_wakeup = iwl_mvm_set_wakeup,
3418         .set_rekey_data = iwl_mvm_set_rekey_data,
3419 #if IS_ENABLED(CONFIG_IPV6)
3420         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3421 #endif
3422         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3423 #endif
3424 };