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         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
 827         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 828                sizeof(dump_info->fw_human_readable));
 829         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 830                 sizeof(dump_info->dev_human_readable));
 831         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 832                 sizeof(dump_info->bus_human_readable));
 833
 834         dump_data = iwl_fw_error_next_data(dump_data);
 835         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 836         dump_data->len = cpu_to_le32(rxf_len);
 837
 838         if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
 839                 u32 *rxf = (void *)dump_data->data;
 840                 int i;
 841
 842                 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
 843                         iwl_trans_write_prph(mvm->trans,
 844                                              RXF_LD_FENCE_OFFSET_ADDR,
 845                                              i * sizeof(u32));
 846                         rxf[i] = iwl_trans_read_prph(mvm->trans,
 847                                                      RXF_FIFO_RD_FENCE_ADDR);
 848                 }
 849                 iwl_trans_release_nic_access(mvm->trans, &flags);
 850         }
 851
 852         dump_data = iwl_fw_error_next_data(dump_data);
 853         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
 854         dump_data->len = cpu_to_le32(sram_len);
 855         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
 856                                  sram_len);
 857
 858         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
 859         fw_error_dump->op_mode_len = file_len;
 860         if (fw_error_dump->trans_ptr)
 861                 file_len += fw_error_dump->trans_ptr->len;
 862         dump_file->file_len = cpu_to_le32(file_len);
 863
 864         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
 865                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
 866 }
 867
 868 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 869 {
 870         /* clear the D3 reconfig, we only need it to avoid dumping a
 871          * firmware coredump on reconfiguration, we shouldn't do that
 872          * on D3->D0 transition
 873          */
 874         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
 875                 iwl_mvm_fw_error_dump(mvm);
 876
 877         iwl_trans_stop_device(mvm->trans);
 878
 879         mvm->scan_status = IWL_MVM_SCAN_NONE;
 880         mvm->ps_disabled = false;
 881         mvm->calibrating = false;
 882
 883         /* just in case one was running */
 884         ieee80211_remain_on_channel_expired(mvm->hw);
 885
 886         ieee80211_iterate_active_interfaces_atomic(
 887                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 888                 iwl_mvm_cleanup_iterator, mvm);
 889
 890         mvm->p2p_device_vif = NULL;
 891         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 892
 893         iwl_mvm_reset_phy_ctxts(mvm);
 894         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 895         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 896         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 897         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 898         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 899         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 900         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 901         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 902         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 903
 904         ieee80211_wake_queues(mvm->hw);
 905
 906         /* cleanup all stale references (scan, roc), but keep the
 907          * ucode_down ref until reconfig is complete */
 908         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 909
 910         /* clear any stale d0i3 state */
 911         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 912
 913         mvm->vif_count = 0;
 914         mvm->rx_ba_sessions = 0;
 915 }
 916
 917 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
 918 {
 919         int ret;
 920
 921         lockdep_assert_held(&mvm->mutex);
 922
 923         /* Clean up some internal and mac80211 state on restart */
 924         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 925                 iwl_mvm_restart_cleanup(mvm);
 926
 927         ret = iwl_mvm_up(mvm);
 928
 929         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 930                 /* Something went wrong - we need to finish some cleanup
 931                  * that normally iwl_mvm_mac_restart_complete() below
 932                  * would do.
 933                  */
 934                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 935                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
 936         }
 937
 938         return ret;
 939 }
 940
 941 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 942 {
 943         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 944         int ret;
 945
 946         mutex_lock(&mvm->mutex);
 947         ret = __iwl_mvm_mac_start(mvm);
 948         mutex_unlock(&mvm->mutex);
 949
 950         return ret;
 951 }
 952
 953 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
 954 {
 955         int ret;
 956
 957         mutex_lock(&mvm->mutex);
 958
 959         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 960         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 961         ret = iwl_mvm_update_quotas(mvm, NULL);
 962         if (ret)
 963                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 964                         ret);
 965
 966         /* allow transport/FW low power modes */
 967         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 968
 969         /*
 970          * If we have TDLS peers, remove them. We don't know the last seqno/PN
 971          * of packets the FW sent out, so we must reconnect.
 972          */
 973         iwl_mvm_teardown_tdls_peers(mvm);
 974
 975         mutex_unlock(&mvm->mutex);
 976 }
 977
 978 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
 979 {
 980         bool exit_now;
 981
 982         if (!iwl_mvm_is_d0i3_supported(mvm))
 983                 return;
 984
 985         mutex_lock(&mvm->d0i3_suspend_mutex);
 986         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
 987         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
 988                                         &mvm->d0i3_suspend_flags);
 989         mutex_unlock(&mvm->d0i3_suspend_mutex);
 990
 991         if (exit_now) {
 992                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
 993                 _iwl_mvm_exit_d0i3(mvm);
 994         }
 995 }
 996
 997 static void
 998 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
 999                               enum ieee80211_reconfig_type reconfig_type)
1000 {
1001         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1002
1003         switch (reconfig_type) {
1004         case IEEE80211_RECONFIG_TYPE_RESTART:
1005                 iwl_mvm_restart_complete(mvm);
1006                 break;
1007         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1008                 iwl_mvm_resume_complete(mvm);
1009                 break;
1010         }
1011 }
1012
1013 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1014 {
1015         lockdep_assert_held(&mvm->mutex);
1016
1017         /* disallow low power states when the FW is down */
1018         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1019
1020         /* async_handlers_wk is now blocked */
1021
1022         /*
1023          * The work item could be running or queued if the
1024          * ROC time event stops just as we get here.
1025          */
1026         cancel_work_sync(&mvm->roc_done_wk);
1027
1028         iwl_trans_stop_device(mvm->trans);
1029
1030         iwl_mvm_async_handlers_purge(mvm);
1031         /* async_handlers_list is empty and will stay empty: HW is stopped */
1032
1033         /* the fw is stopped, the aux sta is dead: clean up driver state */
1034         iwl_mvm_del_aux_sta(mvm);
1035
1036         mvm->ucode_loaded = false;
1037 }
1038
1039 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1040 {
1041         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1042
1043         flush_work(&mvm->d0i3_exit_work);
1044         flush_work(&mvm->async_handlers_wk);
1045         flush_work(&mvm->fw_error_dump_wk);
1046
1047         mutex_lock(&mvm->mutex);
1048         __iwl_mvm_mac_stop(mvm);
1049         mutex_unlock(&mvm->mutex);
1050
1051         /*
1052          * The worker might have been waiting for the mutex, let it run and
1053          * discover that its list is now empty.
1054          */
1055         cancel_work_sync(&mvm->async_handlers_wk);
1056 }
1057
1058 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1059 {
1060         u16 i;
1061
1062         lockdep_assert_held(&mvm->mutex);
1063
1064         for (i = 0; i < NUM_PHY_CTX; i++)
1065                 if (!mvm->phy_ctxts[i].ref)
1066                         return &mvm->phy_ctxts[i];
1067
1068         IWL_ERR(mvm, "No available PHY context\n");
1069         return NULL;
1070 }
1071
1072 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1073                                 s8 tx_power)
1074 {
1075         /* FW is in charge of regulatory enforcement */
1076         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1077                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1078                 .pwr_restriction = cpu_to_le16(tx_power),
1079         };
1080
1081         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1082                                     sizeof(reduce_txpwr_cmd),
1083                                     &reduce_txpwr_cmd);
1084 }
1085
1086 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1087                                      struct ieee80211_vif *vif)
1088 {
1089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1090         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1091         int ret;
1092
1093         /*
1094          * make sure D0i3 exit is completed, otherwise a target access
1095          * during tx queue configuration could be done when still in
1096          * D0i3 state.
1097          */
1098         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1099         if (ret)
1100                 return ret;
1101
1102         /*
1103          * Not much to do here. The stack will not allow interface
1104          * types or combinations that we didn't advertise, so we
1105          * don't really have to check the types.
1106          */
1107
1108         mutex_lock(&mvm->mutex);
1109
1110         /* Allocate resources for the MAC context, and add it to the fw  */
1111         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1112         if (ret)
1113                 goto out_unlock;
1114
1115         /* Counting number of interfaces is needed for legacy PM */
1116         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1117                 mvm->vif_count++;
1118
1119         /*
1120          * The AP binding flow can be done only after the beacon
1121          * template is configured (which happens only in the mac80211
1122          * start_ap() flow), and adding the broadcast station can happen
1123          * only after the binding.
1124          * In addition, since modifying the MAC before adding a bcast
1125          * station is not allowed by the FW, delay the adding of MAC context to
1126          * the point where we can also add the bcast station.
1127          * In short: there's not much we can do at this point, other than
1128          * allocating resources :)
1129          */
1130         if (vif->type == NL80211_IFTYPE_AP ||
1131             vif->type == NL80211_IFTYPE_ADHOC) {
1132                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1133                 if (ret) {
1134                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1135                         goto out_release;
1136                 }
1137
1138                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1139                 goto out_unlock;
1140         }
1141
1142         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1143         if (ret)
1144                 goto out_release;
1145
1146         ret = iwl_mvm_power_update_mac(mvm);
1147         if (ret)
1148                 goto out_release;
1149
1150         /* beacon filtering */
1151         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1152         if (ret)
1153                 goto out_remove_mac;
1154
1155         if (!mvm->bf_allowed_vif &&
1156             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1157                 mvm->bf_allowed_vif = mvmvif;
1158                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1159                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1160         }
1161
1162         /*
1163          * P2P_DEVICE interface does not have a channel context assigned to it,
1164          * so a dedicated PHY context is allocated to it and the corresponding
1165          * MAC context is bound to it at this stage.
1166          */
1167         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1168
1169                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1170                 if (!mvmvif->phy_ctxt) {
1171                         ret = -ENOSPC;
1172                         goto out_free_bf;
1173                 }
1174
1175                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1176                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1177                 if (ret)
1178                         goto out_unref_phy;
1179
1180                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1181                 if (ret)
1182                         goto out_unbind;
1183
1184                 /* Save a pointer to p2p device vif, so it can later be used to
1185                  * update the p2p device MAC when a GO is started/stopped */
1186                 mvm->p2p_device_vif = vif;
1187         }
1188
1189         iwl_mvm_vif_dbgfs_register(mvm, vif);
1190         goto out_unlock;
1191
1192  out_unbind:
1193         iwl_mvm_binding_remove_vif(mvm, vif);
1194  out_unref_phy:
1195         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1196  out_free_bf:
1197         if (mvm->bf_allowed_vif == mvmvif) {
1198                 mvm->bf_allowed_vif = NULL;
1199                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1200                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1201         }
1202  out_remove_mac:
1203         mvmvif->phy_ctxt = NULL;
1204         iwl_mvm_mac_ctxt_remove(mvm, vif);
1205  out_release:
1206         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1207                 mvm->vif_count--;
1208
1209         iwl_mvm_mac_ctxt_release(mvm, vif);
1210  out_unlock:
1211         mutex_unlock(&mvm->mutex);
1212
1213         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1214
1215         return ret;
1216 }
1217
1218 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1219                                         struct ieee80211_vif *vif)
1220 {
1221         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1222
1223         if (tfd_msk) {
1224                 mutex_lock(&mvm->mutex);
1225                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1226                 mutex_unlock(&mvm->mutex);
1227         }
1228
1229         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1230                 /*
1231                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1232                  * We assume here that all the packets sent to the OFFCHANNEL
1233                  * queue are sent in ROC session.
1234                  */
1235                 flush_work(&mvm->roc_done_wk);
1236         } else {
1237                 /*
1238                  * By now, all the AC queues are empty. The AGG queues are
1239                  * empty too. We already got all the Tx responses for all the
1240                  * packets in the queues. The drain work can have been
1241                  * triggered. Flush it.
1242                  */
1243                 flush_work(&mvm->sta_drained_wk);
1244         }
1245 }
1246
1247 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1248                                          struct ieee80211_vif *vif)
1249 {
1250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1251         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1252
1253         iwl_mvm_prepare_mac_removal(mvm, vif);
1254
1255         mutex_lock(&mvm->mutex);
1256
1257         if (mvm->bf_allowed_vif == mvmvif) {
1258                 mvm->bf_allowed_vif = NULL;
1259                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1260                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1261         }
1262
1263         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1264
1265         /*
1266          * For AP/GO interface, the tear down of the resources allocated to the
1267          * interface is be handled as part of the stop_ap flow.
1268          */
1269         if (vif->type == NL80211_IFTYPE_AP ||
1270             vif->type == NL80211_IFTYPE_ADHOC) {
1271 #ifdef CONFIG_NL80211_TESTMODE
1272                 if (vif == mvm->noa_vif) {
1273                         mvm->noa_vif = NULL;
1274                         mvm->noa_duration = 0;
1275                 }
1276 #endif
1277                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1278                 goto out_release;
1279         }
1280
1281         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1282                 mvm->p2p_device_vif = NULL;
1283                 iwl_mvm_rm_bcast_sta(mvm, vif);
1284                 iwl_mvm_binding_remove_vif(mvm, vif);
1285                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1286                 mvmvif->phy_ctxt = NULL;
1287         }
1288
1289         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1290                 mvm->vif_count--;
1291
1292         iwl_mvm_power_update_mac(mvm);
1293         iwl_mvm_mac_ctxt_remove(mvm, vif);
1294
1295 out_release:
1296         iwl_mvm_mac_ctxt_release(mvm, vif);
1297         mutex_unlock(&mvm->mutex);
1298 }
1299
1300 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1301 {
1302         return 0;
1303 }
1304
1305 struct iwl_mvm_mc_iter_data {
1306         struct iwl_mvm *mvm;
1307         int port_id;
1308 };
1309
1310 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1311                                       struct ieee80211_vif *vif)
1312 {
1313         struct iwl_mvm_mc_iter_data *data = _data;
1314         struct iwl_mvm *mvm = data->mvm;
1315         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1316         int ret, len;
1317
1318         /* if we don't have free ports, mcast frames will be dropped */
1319         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1320                 return;
1321
1322         if (vif->type != NL80211_IFTYPE_STATION ||
1323             !vif->bss_conf.assoc)
1324                 return;
1325
1326         cmd->port_id = data->port_id++;
1327         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1328         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1329
1330         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1331         if (ret)
1332                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1333 }
1334
1335 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1336 {
1337         struct iwl_mvm_mc_iter_data iter_data = {
1338                 .mvm = mvm,
1339         };
1340
1341         lockdep_assert_held(&mvm->mutex);
1342
1343         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1344                 return;
1345
1346         ieee80211_iterate_active_interfaces_atomic(
1347                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1348                 iwl_mvm_mc_iface_iterator, &iter_data);
1349 }
1350
1351 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1352                                      struct netdev_hw_addr_list *mc_list)
1353 {
1354         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1355         struct iwl_mcast_filter_cmd *cmd;
1356         struct netdev_hw_addr *addr;
1357         int addr_count;
1358         bool pass_all;
1359         int len;
1360
1361         addr_count = netdev_hw_addr_list_count(mc_list);
1362         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1363                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1364         if (pass_all)
1365                 addr_count = 0;
1366
1367         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1368         cmd = kzalloc(len, GFP_ATOMIC);
1369         if (!cmd)
1370                 return 0;
1371
1372         if (pass_all) {
1373                 cmd->pass_all = 1;
1374                 return (u64)(unsigned long)cmd;
1375         }
1376
1377         netdev_hw_addr_list_for_each(addr, mc_list) {
1378                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1379                                    cmd->count, addr->addr);
1380                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1381                        addr->addr, ETH_ALEN);
1382                 cmd->count++;
1383         }
1384
1385         return (u64)(unsigned long)cmd;
1386 }
1387
1388 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1389                                      unsigned int changed_flags,
1390                                      unsigned int *total_flags,
1391                                      u64 multicast)
1392 {
1393         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1394         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1395
1396         mutex_lock(&mvm->mutex);
1397
1398         /* replace previous configuration */
1399         kfree(mvm->mcast_filter_cmd);
1400         mvm->mcast_filter_cmd = cmd;
1401
1402         if (!cmd)
1403                 goto out;
1404
1405         iwl_mvm_recalc_multicast(mvm);
1406 out:
1407         mutex_unlock(&mvm->mutex);
1408         *total_flags = 0;
1409 }
1410
1411 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1412 struct iwl_bcast_iter_data {
1413         struct iwl_mvm *mvm;
1414         struct iwl_bcast_filter_cmd *cmd;
1415         u8 current_filter;
1416 };
1417
1418 static void
1419 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1420                          const struct iwl_fw_bcast_filter *in_filter,
1421                          struct iwl_fw_bcast_filter *out_filter)
1422 {
1423         struct iwl_fw_bcast_filter_attr *attr;
1424         int i;
1425
1426         memcpy(out_filter, in_filter, sizeof(*out_filter));
1427
1428         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1429                 attr = &out_filter->attrs[i];
1430
1431                 if (!attr->mask)
1432                         break;
1433
1434                 switch (attr->reserved1) {
1435                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1436                         if (vif->bss_conf.arp_addr_cnt != 1) {
1437                                 attr->mask = 0;
1438                                 continue;
1439                         }
1440
1441                         attr->val = vif->bss_conf.arp_addr_list[0];
1442                         break;
1443                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1444                         attr->val = *(__be32 *)&vif->addr[2];
1445                         break;
1446                 default:
1447                         break;
1448                 }
1449                 attr->reserved1 = 0;
1450                 out_filter->num_attrs++;
1451         }
1452 }
1453
1454 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1455                                           struct ieee80211_vif *vif)
1456 {
1457         struct iwl_bcast_iter_data *data = _data;
1458         struct iwl_mvm *mvm = data->mvm;
1459         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1460         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1461         struct iwl_fw_bcast_mac *bcast_mac;
1462         int i;
1463
1464         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1465                 return;
1466
1467         bcast_mac = &cmd->macs[mvmvif->id];
1468
1469         /*
1470          * enable filtering only for associated stations, but not for P2P
1471          * Clients
1472          */
1473         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1474             !vif->bss_conf.assoc)
1475                 return;
1476
1477         bcast_mac->default_discard = 1;
1478
1479         /* copy all configured filters */
1480         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1481                 /*
1482                  * Make sure we don't exceed our filters limit.
1483                  * if there is still a valid filter to be configured,
1484                  * be on the safe side and just allow bcast for this mac.
1485                  */
1486                 if (WARN_ON_ONCE(data->current_filter >=
1487                                  ARRAY_SIZE(cmd->filters))) {
1488                         bcast_mac->default_discard = 0;
1489                         bcast_mac->attached_filters = 0;
1490                         break;
1491                 }
1492
1493                 iwl_mvm_set_bcast_filter(vif,
1494                                          &mvm->bcast_filters[i],
1495                                          &cmd->filters[data->current_filter]);
1496
1497                 /* skip current filter if it contains no attributes */
1498                 if (!cmd->filters[data->current_filter].num_attrs)
1499                         continue;
1500
1501                 /* attach the filter to current mac */
1502                 bcast_mac->attached_filters |=
1503                                 cpu_to_le16(BIT(data->current_filter));
1504
1505                 data->current_filter++;
1506         }
1507 }
1508
1509 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1510                                     struct iwl_bcast_filter_cmd *cmd)
1511 {
1512         struct iwl_bcast_iter_data iter_data = {
1513                 .mvm = mvm,
1514                 .cmd = cmd,
1515         };
1516
1517         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1518                 return false;
1519
1520         memset(cmd, 0, sizeof(*cmd));
1521         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1522         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1523
1524 #ifdef CONFIG_IWLWIFI_DEBUGFS
1525         /* use debugfs filters/macs if override is configured */
1526         if (mvm->dbgfs_bcast_filtering.override) {
1527                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1528                        sizeof(cmd->filters));
1529                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1530                        sizeof(cmd->macs));
1531                 return true;
1532         }
1533 #endif
1534
1535         /* if no filters are configured, do nothing */
1536         if (!mvm->bcast_filters)
1537                 return false;
1538
1539         /* configure and attach these filters for each associated sta vif */
1540         ieee80211_iterate_active_interfaces(
1541                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1542                 iwl_mvm_bcast_filter_iterator, &iter_data);
1543
1544         return true;
1545 }
1546 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1547                                           struct ieee80211_vif *vif)
1548 {
1549         struct iwl_bcast_filter_cmd cmd;
1550
1551         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1552                 return 0;
1553
1554         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1555                 return 0;
1556
1557         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1558                                     sizeof(cmd), &cmd);
1559 }
1560 #else
1561 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1562                                                  struct ieee80211_vif *vif)
1563 {
1564         return 0;
1565 }
1566 #endif
1567
1568 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1569                                              struct ieee80211_vif *vif,
1570                                              struct ieee80211_bss_conf *bss_conf,
1571                                              u32 changes)
1572 {
1573         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1574         int ret;
1575
1576         /*
1577          * Re-calculate the tsf id, as the master-slave relations depend on the
1578          * beacon interval, which was not known when the station interface was
1579          * added.
1580          */
1581         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1582                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1583
1584         /*
1585          * If we're not associated yet, take the (new) BSSID before associating
1586          * so the firmware knows. If we're already associated, then use the old
1587          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1588          * branch for disassociation below.
1589          */
1590         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1591                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1592
1593         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1594         if (ret)
1595                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1596
1597         /* after sending it once, adopt mac80211 data */
1598         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1599         mvmvif->associated = bss_conf->assoc;
1600
1601         if (changes & BSS_CHANGED_ASSOC) {
1602                 if (bss_conf->assoc) {
1603                         /* add quota for this interface */
1604                         ret = iwl_mvm_update_quotas(mvm, NULL);
1605                         if (ret) {
1606                                 IWL_ERR(mvm, "failed to update quotas\n");
1607                                 return;
1608                         }
1609
1610                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1611                                      &mvm->status)) {
1612                                 /*
1613                                  * If we're restarting then the firmware will
1614                                  * obviously have lost synchronisation with
1615                                  * the AP. It will attempt to synchronise by
1616                                  * itself, but we can make it more reliable by
1617                                  * scheduling a session protection time event.
1618                                  *
1619                                  * The firmware needs to receive a beacon to
1620                                  * catch up with synchronisation, use 110% of
1621                                  * the beacon interval.
1622                                  *
1623                                  * Set a large maximum delay to allow for more
1624                                  * than a single interface.
1625                                  */
1626                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1627                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1628                                                         5 * dur, false);
1629                         }
1630
1631                         iwl_mvm_sf_update(mvm, vif, false);
1632                         iwl_mvm_power_vif_assoc(mvm, vif);
1633                         if (vif->p2p) {
1634                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1635                                 iwl_mvm_update_smps(mvm, vif,
1636                                                     IWL_MVM_SMPS_REQ_PROT,
1637                                                     IEEE80211_SMPS_DYNAMIC);
1638                         }
1639                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1640                         /*
1641                          * If update fails - SF might be running in associated
1642                          * mode while disassociated - which is forbidden.
1643                          */
1644                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1645                                   "Failed to update SF upon disassociation\n");
1646
1647                         /* remove AP station now that the MAC is unassoc */
1648                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1649                         if (ret)
1650                                 IWL_ERR(mvm, "failed to remove AP station\n");
1651
1652                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1653                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1654                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1655                         /* remove quota for this interface */
1656                         ret = iwl_mvm_update_quotas(mvm, NULL);
1657                         if (ret)
1658                                 IWL_ERR(mvm, "failed to update quotas\n");
1659
1660                         if (vif->p2p)
1661                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1662
1663                         /* this will take the cleared BSSID from bss_conf */
1664                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1665                         if (ret)
1666                                 IWL_ERR(mvm,
1667                                         "failed to update MAC %pM (clear after unassoc)\n",
1668                                         vif->addr);
1669                 }
1670
1671                 iwl_mvm_recalc_multicast(mvm);
1672                 iwl_mvm_configure_bcast_filter(mvm, vif);
1673
1674                 /* reset rssi values */
1675                 mvmvif->bf_data.ave_beacon_signal = 0;
1676
1677                 iwl_mvm_bt_coex_vif_change(mvm);
1678                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1679                                     IEEE80211_SMPS_AUTOMATIC);
1680         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1681                 /*
1682                  * We received a beacon _after_ association so
1683                  * remove the session protection.
1684                  */
1685                 iwl_mvm_remove_time_event(mvm, mvmvif,
1686                                           &mvmvif->time_event_data);
1687         }
1688
1689         if (changes & BSS_CHANGED_BEACON_INFO) {
1690                 iwl_mvm_sf_update(mvm, vif, false);
1691                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1692         }
1693
1694         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1695                 ret = iwl_mvm_power_update_mac(mvm);
1696                 if (ret)
1697                         IWL_ERR(mvm, "failed to update power mode\n");
1698         }
1699
1700         if (changes & BSS_CHANGED_TXPOWER) {
1701                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1702                                 bss_conf->txpower);
1703                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1704         }
1705
1706         if (changes & BSS_CHANGED_CQM) {
1707                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1708                 /* reset cqm events tracking */
1709                 mvmvif->bf_data.last_cqm_event = 0;
1710                 if (mvmvif->bf_data.bf_enabled) {
1711                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1712                         if (ret)
1713                                 IWL_ERR(mvm,
1714                                         "failed to update CQM thresholds\n");
1715                 }
1716         }
1717
1718         if (changes & BSS_CHANGED_ARP_FILTER) {
1719                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1720                 iwl_mvm_configure_bcast_filter(mvm, vif);
1721         }
1722 }
1723
1724 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1725                                  struct ieee80211_vif *vif)
1726 {
1727         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1728         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1729         int ret;
1730
1731         /*
1732          * iwl_mvm_mac_ctxt_add() might read directly from the device
1733          * (the system time), so make sure it is available.
1734          */
1735         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1736         if (ret)
1737                 return ret;
1738
1739         mutex_lock(&mvm->mutex);
1740
1741         /* Send the beacon template */
1742         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1743         if (ret)
1744                 goto out_unlock;
1745
1746         /*
1747          * Re-calculate the tsf id, as the master-slave relations depend on the
1748          * beacon interval, which was not known when the AP interface was added.
1749          */
1750         if (vif->type == NL80211_IFTYPE_AP)
1751                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1752
1753         /* Add the mac context */
1754         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1755         if (ret)
1756                 goto out_unlock;
1757
1758         /* Perform the binding */
1759         ret = iwl_mvm_binding_add_vif(mvm, vif);
1760         if (ret)
1761                 goto out_remove;
1762
1763         /* Send the bcast station. At this stage the TBTT and DTIM time events
1764          * are added and applied to the scheduler */
1765         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1766         if (ret)
1767                 goto out_unbind;
1768
1769         /* must be set before quota calculations */
1770         mvmvif->ap_ibss_active = true;
1771
1772         /* power updated needs to be done before quotas */
1773         iwl_mvm_power_update_mac(mvm);
1774
1775         ret = iwl_mvm_update_quotas(mvm, NULL);
1776         if (ret)
1777                 goto out_quota_failed;
1778
1779         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1780         if (vif->p2p && mvm->p2p_device_vif)
1781                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1782
1783         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1784
1785         iwl_mvm_bt_coex_vif_change(mvm);
1786
1787         /* we don't support TDLS during DCM */
1788         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1789                 iwl_mvm_teardown_tdls_peers(mvm);
1790
1791         mutex_unlock(&mvm->mutex);
1792         return 0;
1793
1794 out_quota_failed:
1795         iwl_mvm_power_update_mac(mvm);
1796         mvmvif->ap_ibss_active = false;
1797         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1798 out_unbind:
1799         iwl_mvm_binding_remove_vif(mvm, vif);
1800 out_remove:
1801         iwl_mvm_mac_ctxt_remove(mvm, vif);
1802 out_unlock:
1803         mutex_unlock(&mvm->mutex);
1804         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1805         return ret;
1806 }
1807
1808 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1809                                  struct ieee80211_vif *vif)
1810 {
1811         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1812         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1813
1814         iwl_mvm_prepare_mac_removal(mvm, vif);
1815
1816         mutex_lock(&mvm->mutex);
1817
1818         /* Handle AP stop while in CSA */
1819         if (rcu_access_pointer(mvm->csa_vif) == vif) {
1820                 iwl_mvm_remove_time_event(mvm, mvmvif,
1821                                           &mvmvif->time_event_data);
1822                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1823         }
1824
1825         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1826                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1827                 mvm->csa_tx_block_bcn_timeout = 0;
1828         }
1829
1830         mvmvif->ap_ibss_active = false;
1831         mvm->ap_last_beacon_gp2 = 0;
1832
1833         iwl_mvm_bt_coex_vif_change(mvm);
1834
1835         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1836
1837         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1838         if (vif->p2p && mvm->p2p_device_vif)
1839                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1840
1841         iwl_mvm_update_quotas(mvm, NULL);
1842         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1843         iwl_mvm_binding_remove_vif(mvm, vif);
1844
1845         iwl_mvm_power_update_mac(mvm);
1846
1847         iwl_mvm_mac_ctxt_remove(mvm, vif);
1848
1849         mutex_unlock(&mvm->mutex);
1850 }
1851
1852 static void
1853 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1854                                  struct ieee80211_vif *vif,
1855                                  struct ieee80211_bss_conf *bss_conf,
1856                                  u32 changes)
1857 {
1858         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1859
1860         /* Changes will be applied when the AP/IBSS is started */
1861         if (!mvmvif->ap_ibss_active)
1862                 return;
1863
1864         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1865                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1866             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1867                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1868
1869         /* Need to send a new beacon template to the FW */
1870         if (changes & BSS_CHANGED_BEACON &&
1871             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1872                 IWL_WARN(mvm, "Failed updating beacon data\n");
1873
1874         if (changes & BSS_CHANGED_TXPOWER) {
1875                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1876                                 bss_conf->txpower);
1877                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1878         }
1879
1880 }
1881
1882 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1883                                      struct ieee80211_vif *vif,
1884                                      struct ieee80211_bss_conf *bss_conf,
1885                                      u32 changes)
1886 {
1887         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1888
1889         /*
1890          * iwl_mvm_bss_info_changed_station() might call
1891          * iwl_mvm_protect_session(), which reads directly from
1892          * the device (the system time), so make sure it is available.
1893          */
1894         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1895                 return;
1896
1897         mutex_lock(&mvm->mutex);
1898
1899         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1900                 iwl_mvm_scan_offload_stop(mvm, true);
1901
1902         switch (vif->type) {
1903         case NL80211_IFTYPE_STATION:
1904                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1905                 break;
1906         case NL80211_IFTYPE_AP:
1907         case NL80211_IFTYPE_ADHOC:
1908                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1909                 break;
1910         default:
1911                 /* shouldn't happen */
1912                 WARN_ON_ONCE(1);
1913         }
1914
1915         mutex_unlock(&mvm->mutex);
1916         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1917 }
1918
1919 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1920                                           enum iwl_scan_status scan_type)
1921 {
1922         int ret;
1923         bool wait_for_handlers = false;
1924
1925         mutex_lock(&mvm->mutex);
1926
1927         if (mvm->scan_status != scan_type) {
1928                 ret = 0;
1929                 /* make sure there are no pending notifications */
1930                 wait_for_handlers = true;
1931                 goto out;
1932         }
1933
1934         switch (scan_type) {
1935         case IWL_MVM_SCAN_SCHED:
1936                 ret = iwl_mvm_scan_offload_stop(mvm, true);
1937                 break;
1938         case IWL_MVM_SCAN_OS:
1939                 ret = iwl_mvm_cancel_scan(mvm);
1940                 break;
1941         case IWL_MVM_SCAN_NONE:
1942         default:
1943                 WARN_ON_ONCE(1);
1944                 ret = -EINVAL;
1945                 break;
1946         }
1947         if (ret)
1948                 goto out;
1949
1950         wait_for_handlers = true;
1951 out:
1952         mutex_unlock(&mvm->mutex);
1953
1954         /* make sure we consume the completion notification */
1955         if (wait_for_handlers)
1956                 iwl_mvm_wait_for_async_handlers(mvm);
1957
1958         return ret;
1959 }
1960 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1961                                struct ieee80211_vif *vif,
1962                                struct ieee80211_scan_request *hw_req)
1963 {
1964         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1965         struct cfg80211_scan_request *req = &hw_req->req;
1966         int ret;
1967
1968         if (req->n_channels == 0 ||
1969             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1970                 return -EINVAL;
1971
1972         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1973                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1974                 if (ret)
1975                         return ret;
1976         }
1977
1978         mutex_lock(&mvm->mutex);
1979
1980         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1981                 ret = -EBUSY;
1982                 goto out;
1983         }
1984
1985         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1986
1987         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1988                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1989         else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1990                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1991         else
1992                 ret = iwl_mvm_scan_request(mvm, vif, req);
1993
1994         if (ret)
1995                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1996 out:
1997         mutex_unlock(&mvm->mutex);
1998         return ret;
1999 }
2000
2001 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2002                                        struct ieee80211_vif *vif)
2003 {
2004         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2005
2006         mutex_lock(&mvm->mutex);
2007
2008         iwl_mvm_cancel_scan(mvm);
2009
2010         mutex_unlock(&mvm->mutex);
2011 }
2012
2013 static void
2014 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2015                                   struct ieee80211_sta *sta, u16 tids,
2016                                   int num_frames,
2017                                   enum ieee80211_frame_release_type reason,
2018                                   bool more_data)
2019 {
2020         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2021
2022         /* Called when we need to transmit (a) frame(s) from mac80211 */
2023
2024         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2025                                           tids, more_data, false);
2026 }
2027
2028 static void
2029 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2030                                     struct ieee80211_sta *sta, u16 tids,
2031                                     int num_frames,
2032                                     enum ieee80211_frame_release_type reason,
2033                                     bool more_data)
2034 {
2035         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2036
2037         /* Called when we need to transmit (a) frame(s) from agg queue */
2038
2039         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2040                                           tids, more_data, true);
2041 }
2042
2043 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2044                                    struct ieee80211_vif *vif,
2045                                    enum sta_notify_cmd cmd,
2046                                    struct ieee80211_sta *sta)
2047 {
2048         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2049         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2050         int tid;
2051
2052         switch (cmd) {
2053         case STA_NOTIFY_SLEEP:
2054                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2055                         ieee80211_sta_block_awake(hw, sta, true);
2056                 spin_lock_bh(&mvmsta->lock);
2057                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2058                         struct iwl_mvm_tid_data *tid_data;
2059
2060                         tid_data = &mvmsta->tid_data[tid];
2061                         if (tid_data->state != IWL_AGG_ON &&
2062                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2063                                 continue;
2064                         if (iwl_mvm_tid_queued(tid_data) == 0)
2065                                 continue;
2066                         ieee80211_sta_set_buffered(sta, tid, true);
2067                 }
2068                 spin_unlock_bh(&mvmsta->lock);
2069                 /*
2070                  * The fw updates the STA to be asleep. Tx packets on the Tx
2071                  * queues to this station will not be transmitted. The fw will
2072                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2073                  */
2074                 break;
2075         case STA_NOTIFY_AWAKE:
2076                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2077                         break;
2078                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2079                 break;
2080         default:
2081                 break;
2082         }
2083 }
2084
2085 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2086                                        struct ieee80211_vif *vif,
2087                                        struct ieee80211_sta *sta)
2088 {
2089         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2090         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2091
2092         /*
2093          * This is called before mac80211 does RCU synchronisation,
2094          * so here we already invalidate our internal RCU-protected
2095          * station pointer. The rest of the code will thus no longer
2096          * be able to find the station this way, and we don't rely
2097          * on further RCU synchronisation after the sta_state()
2098          * callback deleted the station.
2099          */
2100         mutex_lock(&mvm->mutex);
2101         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2102                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2103                                    ERR_PTR(-ENOENT));
2104         mutex_unlock(&mvm->mutex);
2105 }
2106
2107 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2108                                  struct ieee80211_vif *vif,
2109                                  struct ieee80211_sta *sta,
2110                                  enum ieee80211_sta_state old_state,
2111                                  enum ieee80211_sta_state new_state)
2112 {
2113         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2114         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2115         int ret;
2116
2117         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2118                            sta->addr, old_state, new_state);
2119
2120         /* this would be a mac80211 bug ... but don't crash */
2121         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2122                 return -EINVAL;
2123
2124         /* if a STA is being removed, reuse its ID */
2125         flush_work(&mvm->sta_drained_wk);
2126
2127         mutex_lock(&mvm->mutex);
2128         if (old_state == IEEE80211_STA_NOTEXIST &&
2129             new_state == IEEE80211_STA_NONE) {
2130                 /*
2131                  * Firmware bug - it'll crash if the beacon interval is less
2132                  * than 16. We can't avoid connecting at all, so refuse the
2133                  * station state change, this will cause mac80211 to abandon
2134                  * attempts to connect to this AP, and eventually wpa_s will
2135                  * blacklist the AP...
2136                  */
2137                 if (vif->type == NL80211_IFTYPE_STATION &&
2138                     vif->bss_conf.beacon_int < 16) {
2139                         IWL_ERR(mvm,
2140                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2141                                 sta->addr, vif->bss_conf.beacon_int);
2142                         ret = -EINVAL;
2143                         goto out_unlock;
2144                 }
2145
2146                 if (sta->tdls &&
2147                     (vif->p2p ||
2148                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2149                                                 IWL_MVM_TDLS_STA_COUNT ||
2150                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2151                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2152                         ret = -EBUSY;
2153                         goto out_unlock;
2154                 }
2155
2156                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2157                 if (sta->tdls && ret == 0)
2158                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2159         } else if (old_state == IEEE80211_STA_NONE &&
2160                    new_state == IEEE80211_STA_AUTH) {
2161                 /*
2162                  * EBS may be disabled due to previous failures reported by FW.
2163                  * Reset EBS status here assuming environment has been changed.
2164                  */
2165                 mvm->last_ebs_successful = true;
2166                 ret = 0;
2167         } else if (old_state == IEEE80211_STA_AUTH &&
2168                    new_state == IEEE80211_STA_ASSOC) {
2169                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2170                 if (ret == 0)
2171                         iwl_mvm_rs_rate_init(mvm, sta,
2172                                              mvmvif->phy_ctxt->channel->band,
2173                                              true);
2174         } else if (old_state == IEEE80211_STA_ASSOC &&
2175                    new_state == IEEE80211_STA_AUTHORIZED) {
2176
2177                 /* we don't support TDLS during DCM */
2178                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2179                         iwl_mvm_teardown_tdls_peers(mvm);
2180
2181                 /* enable beacon filtering */
2182                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2183                 ret = 0;
2184         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2185                    new_state == IEEE80211_STA_ASSOC) {
2186                 /* disable beacon filtering */
2187                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2188                 ret = 0;
2189         } else if (old_state == IEEE80211_STA_ASSOC &&
2190                    new_state == IEEE80211_STA_AUTH) {
2191                 ret = 0;
2192         } else if (old_state == IEEE80211_STA_AUTH &&
2193                    new_state == IEEE80211_STA_NONE) {
2194                 ret = 0;
2195         } else if (old_state == IEEE80211_STA_NONE &&
2196                    new_state == IEEE80211_STA_NOTEXIST) {
2197                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2198                 if (sta->tdls)
2199                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2200         } else {
2201                 ret = -EIO;
2202         }
2203  out_unlock:
2204         mutex_unlock(&mvm->mutex);
2205
2206         if (sta->tdls && ret == 0) {
2207                 if (old_state == IEEE80211_STA_NOTEXIST &&
2208                     new_state == IEEE80211_STA_NONE)
2209                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2210                 else if (old_state == IEEE80211_STA_NONE &&
2211                          new_state == IEEE80211_STA_NOTEXIST)
2212                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2213         }
2214
2215         return ret;
2216 }
2217
2218 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2219 {
2220         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2221
2222         mvm->rts_threshold = value;
2223
2224         return 0;
2225 }
2226
2227 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2228                                   struct ieee80211_vif *vif,
2229                                   struct ieee80211_sta *sta, u32 changed)
2230 {
2231         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2232
2233         if (vif->type == NL80211_IFTYPE_STATION &&
2234             changed & IEEE80211_RC_NSS_CHANGED)
2235                 iwl_mvm_sf_update(mvm, vif, false);
2236 }
2237
2238 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2239                                struct ieee80211_vif *vif, u16 ac,
2240                                const struct ieee80211_tx_queue_params *params)
2241 {
2242         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2243         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2244
2245         mvmvif->queue_params[ac] = *params;
2246
2247         /*
2248          * No need to update right away, we'll get BSS_CHANGED_QOS
2249          * The exception is P2P_DEVICE interface which needs immediate update.
2250          */
2251         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2252                 int ret;
2253
2254                 mutex_lock(&mvm->mutex);
2255                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2256                 mutex_unlock(&mvm->mutex);
2257                 return ret;
2258         }
2259         return 0;
2260 }
2261
2262 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2263                                       struct ieee80211_vif *vif)
2264 {
2265         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2266         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2267                            200 + vif->bss_conf.beacon_int);
2268         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2269                                100 + vif->bss_conf.beacon_int);
2270
2271         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2272                 return;
2273
2274         /*
2275          * iwl_mvm_protect_session() reads directly from the device
2276          * (the system time), so make sure it is available.
2277          */
2278         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2279                 return;
2280
2281         mutex_lock(&mvm->mutex);
2282         /* Try really hard to protect the session and hear a beacon */
2283         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2284         mutex_unlock(&mvm->mutex);
2285
2286         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2287 }
2288
2289 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2290                                         struct ieee80211_vif *vif,
2291                                         struct cfg80211_sched_scan_request *req,
2292                                         struct ieee80211_scan_ies *ies)
2293 {
2294         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2295         int ret;
2296
2297         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2298                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2299                 if (ret)
2300                         return ret;
2301         }
2302
2303         mutex_lock(&mvm->mutex);
2304
2305         /* Newest FW fixes sched scan while connected on another interface */
2306         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2307                 if (!vif->bss_conf.idle) {
2308                         ret = -EBUSY;
2309                         goto out;
2310                 }
2311         } else if (!iwl_mvm_is_idle(mvm)) {
2312                 ret = -EBUSY;
2313                 goto out;
2314         }
2315
2316         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2317                 ret = -EBUSY;
2318                 goto out;
2319         }
2320
2321         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2322         if (ret)
2323                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2324
2325 out:
2326         mutex_unlock(&mvm->mutex);
2327         return ret;
2328 }
2329
2330 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2331                                        struct ieee80211_vif *vif)
2332 {
2333         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2334         int ret;
2335
2336         mutex_lock(&mvm->mutex);
2337         ret = iwl_mvm_scan_offload_stop(mvm, false);
2338         mutex_unlock(&mvm->mutex);
2339         iwl_mvm_wait_for_async_handlers(mvm);
2340
2341         return ret;
2342
2343 }
2344
2345 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2346                                enum set_key_cmd cmd,
2347                                struct ieee80211_vif *vif,
2348                                struct ieee80211_sta *sta,
2349                                struct ieee80211_key_conf *key)
2350 {
2351         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2352         int ret;
2353
2354         if (iwlwifi_mod_params.sw_crypto) {
2355                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2356                 return -EOPNOTSUPP;
2357         }
2358
2359         switch (key->cipher) {
2360         case WLAN_CIPHER_SUITE_TKIP:
2361                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2362                 /* fall-through */
2363         case WLAN_CIPHER_SUITE_CCMP:
2364                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2365                 break;
2366         case WLAN_CIPHER_SUITE_AES_CMAC:
2367                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2368                 break;
2369         case WLAN_CIPHER_SUITE_WEP40:
2370         case WLAN_CIPHER_SUITE_WEP104:
2371                 /* For non-client mode, only use WEP keys for TX as we probably
2372                  * don't have a station yet anyway and would then have to keep
2373                  * track of the keys, linking them to each of the clients/peers
2374                  * as they appear. For now, don't do that, for performance WEP
2375                  * offload doesn't really matter much, but we need it for some
2376                  * other offload features in client mode.
2377                  */
2378                 if (vif->type != NL80211_IFTYPE_STATION)
2379                         return 0;
2380                 break;
2381         default:
2382                 /* currently FW supports only one optional cipher scheme */
2383                 if (hw->n_cipher_schemes &&
2384                     hw->cipher_schemes->cipher == key->cipher)
2385                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2386                 else
2387                         return -EOPNOTSUPP;
2388         }
2389
2390         mutex_lock(&mvm->mutex);
2391
2392         switch (cmd) {
2393         case SET_KEY:
2394                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2395                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2396                         /*
2397                          * GTK on AP interface is a TX-only key, return 0;
2398                          * on IBSS they're per-station and because we're lazy
2399                          * we don't support them for RX, so do the same.
2400                          */
2401                         ret = 0;
2402                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2403                         break;
2404                 }
2405
2406                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2407                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2408                 if (ret) {
2409                         IWL_WARN(mvm, "set key failed\n");
2410                         /*
2411                          * can't add key for RX, but we don't need it
2412                          * in the device for TX so still return 0
2413                          */
2414                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2415                         ret = 0;
2416                 }
2417
2418                 break;
2419         case DISABLE_KEY:
2420                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2421                         ret = 0;
2422                         break;
2423                 }
2424
2425                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2426                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2427                 break;
2428         default:
2429                 ret = -EINVAL;
2430         }
2431
2432         mutex_unlock(&mvm->mutex);
2433         return ret;
2434 }
2435
2436 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2437                                         struct ieee80211_vif *vif,
2438                                         struct ieee80211_key_conf *keyconf,
2439                                         struct ieee80211_sta *sta,
2440                                         u32 iv32, u16 *phase1key)
2441 {
2442         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2443
2444         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2445                 return;
2446
2447         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2448 }
2449
2450
2451 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2452                                struct iwl_rx_packet *pkt, void *data)
2453 {
2454         struct iwl_mvm *mvm =
2455                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2456         struct iwl_hs20_roc_res *resp;
2457         int resp_len = iwl_rx_packet_payload_len(pkt);
2458         struct iwl_mvm_time_event_data *te_data = data;
2459
2460         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2461                 return true;
2462
2463         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2464                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2465                 return true;
2466         }
2467
2468         resp = (void *)pkt->data;
2469
2470         IWL_DEBUG_TE(mvm,
2471                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2472                      resp->status, resp->event_unique_id);
2473
2474         te_data->uid = le32_to_cpu(resp->event_unique_id);
2475         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2476                      te_data->uid);
2477
2478         spin_lock_bh(&mvm->time_event_lock);
2479         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2480         spin_unlock_bh(&mvm->time_event_lock);
2481
2482         return true;
2483 }
2484
2485 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2486 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2487                                     struct ieee80211_channel *channel,
2488                                     struct ieee80211_vif *vif,
2489                                     int duration)
2490 {
2491         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2492         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2493         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2494         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2495         struct iwl_notification_wait wait_time_event;
2496         struct iwl_hs20_roc_req aux_roc_req = {
2497                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2498                 .id_and_color =
2499                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2500                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2501                 /* Set the channel info data */
2502                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2503                         PHY_BAND_24 : PHY_BAND_5,
2504                 .channel_info.channel = channel->hw_value,
2505                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2506                 /* Set the time and duration */
2507                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2508                 .apply_time_max_delay =
2509                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2510                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2511          };
2512
2513         /* Set the node address */
2514         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2515
2516         lockdep_assert_held(&mvm->mutex);
2517
2518         spin_lock_bh(&mvm->time_event_lock);
2519
2520         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2521                 spin_unlock_bh(&mvm->time_event_lock);
2522                 return -EIO;
2523         }
2524
2525         te_data->vif = vif;
2526         te_data->duration = duration;
2527         te_data->id = HOT_SPOT_CMD;
2528
2529         spin_unlock_bh(&mvm->time_event_lock);
2530
2531         /*
2532          * Use a notification wait, which really just processes the
2533          * command response and doesn't wait for anything, in order
2534          * to be able to process the response and get the UID inside
2535          * the RX path. Using CMD_WANT_SKB doesn't work because it
2536          * stores the buffer and then wakes up this thread, by which
2537          * time another notification (that the time event started)
2538          * might already be processed unsuccessfully.
2539          */
2540         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2541                                    time_event_response,
2542                                    ARRAY_SIZE(time_event_response),
2543                                    iwl_mvm_rx_aux_roc, te_data);
2544
2545         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2546                                    &aux_roc_req);
2547
2548         if (res) {
2549                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2550                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2551                 goto out_clear_te;
2552         }
2553
2554         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2555         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2556         /* should never fail */
2557         WARN_ON_ONCE(res);
2558
2559         if (res) {
2560  out_clear_te:
2561                 spin_lock_bh(&mvm->time_event_lock);
2562                 iwl_mvm_te_clear_data(mvm, te_data);
2563                 spin_unlock_bh(&mvm->time_event_lock);
2564         }
2565
2566         return res;
2567 }
2568
2569 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2570                        struct ieee80211_vif *vif,
2571                        struct ieee80211_channel *channel,
2572                        int duration,
2573                        enum ieee80211_roc_type type)
2574 {
2575         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2576         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2577         struct cfg80211_chan_def chandef;
2578         struct iwl_mvm_phy_ctxt *phy_ctxt;
2579         int ret, i;
2580
2581         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2582                            duration, type);
2583
2584         mutex_lock(&mvm->mutex);
2585
2586         switch (vif->type) {
2587         case NL80211_IFTYPE_STATION:
2588                 if (mvm->fw->ucode_capa.capa[0] &
2589                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2590                         /* Use aux roc framework (HS20) */
2591                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2592                                                        vif, duration);
2593                         goto out_unlock;
2594                 }
2595                 IWL_ERR(mvm, "hotspot not supported\n");
2596                 ret = -EINVAL;
2597                 goto out_unlock;
2598         case NL80211_IFTYPE_P2P_DEVICE:
2599                 /* handle below */
2600                 break;
2601         default:
2602                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2603                 ret = -EINVAL;
2604                 goto out_unlock;
2605         }
2606
2607         for (i = 0; i < NUM_PHY_CTX; i++) {
2608                 phy_ctxt = &mvm->phy_ctxts[i];
2609                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2610                         continue;
2611
2612                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2613                         /*
2614                          * Unbind the P2P_DEVICE from the current PHY context,
2615                          * and if the PHY context is not used remove it.
2616                          */
2617                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2618                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2619                                 goto out_unlock;
2620
2621                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2622
2623                         /* Bind the P2P_DEVICE to the current PHY Context */
2624                         mvmvif->phy_ctxt = phy_ctxt;
2625
2626                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2627                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2628                                 goto out_unlock;
2629
2630                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2631                         goto schedule_time_event;
2632                 }
2633         }
2634
2635         /* Need to update the PHY context only if the ROC channel changed */
2636         if (channel == mvmvif->phy_ctxt->channel)
2637                 goto schedule_time_event;
2638
2639         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2640
2641         /*
2642          * Change the PHY context configuration as it is currently referenced
2643          * only by the P2P Device MAC
2644          */
2645         if (mvmvif->phy_ctxt->ref == 1) {
2646                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2647                                                &chandef, 1, 1);
2648                 if (ret)
2649                         goto out_unlock;
2650         } else {
2651                 /*
2652                  * The PHY context is shared with other MACs. Need to remove the
2653                  * P2P Device from the binding, allocate an new PHY context and
2654                  * create a new binding
2655                  */
2656                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2657                 if (!phy_ctxt) {
2658                         ret = -ENOSPC;
2659                         goto out_unlock;
2660                 }
2661
2662                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2663                                                1, 1);
2664                 if (ret) {
2665                         IWL_ERR(mvm, "Failed to change PHY context\n");
2666                         goto out_unlock;
2667                 }
2668
2669                 /* Unbind the P2P_DEVICE from the current PHY context */
2670                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2671                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2672                         goto out_unlock;
2673
2674                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2675
2676                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2677                 mvmvif->phy_ctxt = phy_ctxt;
2678
2679                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2680                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2681                         goto out_unlock;
2682
2683                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2684         }
2685
2686 schedule_time_event:
2687         /* Schedule the time events */
2688         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2689
2690 out_unlock:
2691         mutex_unlock(&mvm->mutex);
2692         IWL_DEBUG_MAC80211(mvm, "leave\n");
2693         return ret;
2694 }
2695
2696 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2697 {
2698         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2699
2700         IWL_DEBUG_MAC80211(mvm, "enter\n");
2701
2702         mutex_lock(&mvm->mutex);
2703         iwl_mvm_stop_roc(mvm);
2704         mutex_unlock(&mvm->mutex);
2705
2706         IWL_DEBUG_MAC80211(mvm, "leave\n");
2707         return 0;
2708 }
2709
2710 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2711                                  struct ieee80211_chanctx_conf *ctx)
2712 {
2713         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2714         struct iwl_mvm_phy_ctxt *phy_ctxt;
2715         int ret;
2716
2717         lockdep_assert_held(&mvm->mutex);
2718
2719         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2720
2721         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2722         if (!phy_ctxt) {
2723                 ret = -ENOSPC;
2724                 goto out;
2725         }
2726
2727         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2728                                        ctx->rx_chains_static,
2729                                        ctx->rx_chains_dynamic);
2730         if (ret) {
2731                 IWL_ERR(mvm, "Failed to add PHY context\n");
2732                 goto out;
2733         }
2734
2735         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2736         *phy_ctxt_id = phy_ctxt->id;
2737 out:
2738         return ret;
2739 }
2740
2741 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2742                                struct ieee80211_chanctx_conf *ctx)
2743 {
2744         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2745         int ret;
2746
2747         mutex_lock(&mvm->mutex);
2748         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2749         mutex_unlock(&mvm->mutex);
2750
2751         return ret;
2752 }
2753
2754 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2755                                      struct ieee80211_chanctx_conf *ctx)
2756 {
2757         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2758         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2759
2760         lockdep_assert_held(&mvm->mutex);
2761
2762         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2763 }
2764
2765 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2766                                    struct ieee80211_chanctx_conf *ctx)
2767 {
2768         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2769
2770         mutex_lock(&mvm->mutex);
2771         __iwl_mvm_remove_chanctx(mvm, ctx);
2772         mutex_unlock(&mvm->mutex);
2773 }
2774
2775 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2776                                    struct ieee80211_chanctx_conf *ctx,
2777                                    u32 changed)
2778 {
2779         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2780         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2781         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2782
2783         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2784                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2785                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2786                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2787                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2788                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2789                       phy_ctxt->ref, changed))
2790                 return;
2791
2792         mutex_lock(&mvm->mutex);
2793         iwl_mvm_bt_coex_vif_change(mvm);
2794         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2795                                  ctx->rx_chains_static,
2796                                  ctx->rx_chains_dynamic);
2797         mutex_unlock(&mvm->mutex);
2798 }
2799
2800 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2801                                         struct ieee80211_vif *vif,
2802                                         struct ieee80211_chanctx_conf *ctx,
2803                                         bool switching_chanctx)
2804 {
2805         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2806         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2807         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2808         int ret;
2809
2810         lockdep_assert_held(&mvm->mutex);
2811
2812         mvmvif->phy_ctxt = phy_ctxt;
2813
2814         switch (vif->type) {
2815         case NL80211_IFTYPE_AP:
2816                 /* only needed if we're switching chanctx (i.e. during CSA) */
2817                 if (switching_chanctx) {
2818                         mvmvif->ap_ibss_active = true;
2819                         break;
2820                 }
2821         case NL80211_IFTYPE_ADHOC:
2822                 /*
2823                  * The AP binding flow is handled as part of the start_ap flow
2824                  * (in bss_info_changed), similarly for IBSS.
2825                  */
2826                 ret = 0;
2827                 goto out;
2828         case NL80211_IFTYPE_STATION:
2829                 break;
2830         case NL80211_IFTYPE_MONITOR:
2831                 /* always disable PS when a monitor interface is active */
2832                 mvmvif->ps_disabled = true;
2833                 break;
2834         default:
2835                 ret = -EINVAL;
2836                 goto out;
2837         }
2838
2839         ret = iwl_mvm_binding_add_vif(mvm, vif);
2840         if (ret)
2841                 goto out;
2842
2843         /*
2844          * Power state must be updated before quotas,
2845          * otherwise fw will complain.
2846          */
2847         iwl_mvm_power_update_mac(mvm);
2848
2849         /* Setting the quota at this stage is only required for monitor
2850          * interfaces. For the other types, the bss_info changed flow
2851          * will handle quota settings.
2852          */
2853         if (vif->type == NL80211_IFTYPE_MONITOR) {
2854                 mvmvif->monitor_active = true;
2855                 ret = iwl_mvm_update_quotas(mvm, NULL);
2856                 if (ret)
2857                         goto out_remove_binding;
2858         }
2859
2860         /* Handle binding during CSA */
2861         if (vif->type == NL80211_IFTYPE_AP) {
2862                 iwl_mvm_update_quotas(mvm, NULL);
2863                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2864         }
2865
2866         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
2867                 u32 duration = 2 * vif->bss_conf.beacon_int;
2868
2869                 /* iwl_mvm_protect_session() reads directly from the
2870                  * device (the system time), so make sure it is
2871                  * available.
2872                  */
2873                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2874                 if (ret)
2875                         goto out_remove_binding;
2876
2877                 /* Protect the session to make sure we hear the first
2878                  * beacon on the new channel.
2879                  */
2880                 iwl_mvm_protect_session(mvm, vif, duration, duration,
2881                                         vif->bss_conf.beacon_int / 2,
2882                                         true);
2883
2884                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2885
2886                 iwl_mvm_update_quotas(mvm, NULL);
2887         }
2888
2889         goto out;
2890
2891 out_remove_binding:
2892         iwl_mvm_binding_remove_vif(mvm, vif);
2893         iwl_mvm_power_update_mac(mvm);
2894 out:
2895         if (ret)
2896                 mvmvif->phy_ctxt = NULL;
2897         return ret;
2898 }
2899 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2900                                       struct ieee80211_vif *vif,
2901                                       struct ieee80211_chanctx_conf *ctx)
2902 {
2903         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2904         int ret;
2905
2906         mutex_lock(&mvm->mutex);
2907         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2908         mutex_unlock(&mvm->mutex);
2909
2910         return ret;
2911 }
2912
2913 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2914                                            struct ieee80211_vif *vif,
2915                                            struct ieee80211_chanctx_conf *ctx,
2916                                            bool switching_chanctx)
2917 {
2918         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2919         struct ieee80211_vif *disabled_vif = NULL;
2920
2921         lockdep_assert_held(&mvm->mutex);
2922
2923         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2924
2925         switch (vif->type) {
2926         case NL80211_IFTYPE_ADHOC:
2927                 goto out;
2928         case NL80211_IFTYPE_MONITOR:
2929                 mvmvif->monitor_active = false;
2930                 mvmvif->ps_disabled = false;
2931                 break;
2932         case NL80211_IFTYPE_AP:
2933                 /* This part is triggered only during CSA */
2934                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
2935                         goto out;
2936
2937                 mvmvif->csa_countdown = false;
2938
2939                 /* Set CS bit on all the stations */
2940                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2941
2942                 /* Save blocked iface, the timeout is set on the next beacon */
2943                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2944
2945                 mvmvif->ap_ibss_active = false;
2946                 break;
2947         case NL80211_IFTYPE_STATION:
2948                 if (!switching_chanctx)
2949                         break;
2950
2951                 disabled_vif = vif;
2952
2953                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2954                 break;
2955         default:
2956                 break;
2957         }
2958
2959         iwl_mvm_update_quotas(mvm, disabled_vif);
2960         iwl_mvm_binding_remove_vif(mvm, vif);
2961
2962 out:
2963         mvmvif->phy_ctxt = NULL;
2964         iwl_mvm_power_update_mac(mvm);
2965 }
2966
2967 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2968                                          struct ieee80211_vif *vif,
2969                                          struct ieee80211_chanctx_conf *ctx)
2970 {
2971         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2972
2973         mutex_lock(&mvm->mutex);
2974         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2975         mutex_unlock(&mvm->mutex);
2976 }
2977
2978 static int
2979 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
2980                                 struct ieee80211_vif_chanctx_switch *vifs)
2981 {
2982         int ret;
2983
2984         mutex_lock(&mvm->mutex);
2985         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2986         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2987
2988         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2989         if (ret) {
2990                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2991                 goto out_reassign;
2992         }
2993
2994         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2995                                            true);
2996         if (ret) {
2997                 IWL_ERR(mvm,
2998                         "failed to assign new_ctx during channel switch\n");
2999                 goto out_remove;
3000         }
3001
3002         /* we don't support TDLS during DCM - can be caused by channel switch */
3003         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3004                 iwl_mvm_teardown_tdls_peers(mvm);
3005
3006         goto out;
3007
3008 out_remove:
3009         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3010
3011 out_reassign:
3012         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3013                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3014                 goto out_restart;
3015         }
3016
3017         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3018                                          true)) {
3019                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3020                 goto out_restart;
3021         }
3022
3023         goto out;
3024
3025 out_restart:
3026         /* things keep failing, better restart the hw */
3027         iwl_mvm_nic_restart(mvm, false);
3028
3029 out:
3030         mutex_unlock(&mvm->mutex);
3031
3032         return ret;
3033 }
3034
3035 static int
3036 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3037                                     struct ieee80211_vif_chanctx_switch *vifs)
3038 {
3039         int ret;
3040
3041         mutex_lock(&mvm->mutex);
3042         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3043
3044         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3045                                            true);
3046         if (ret) {
3047                 IWL_ERR(mvm,
3048                         "failed to assign new_ctx during channel switch\n");
3049                 goto out_reassign;
3050         }
3051
3052         goto out;
3053
3054 out_reassign:
3055         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3056                                          true)) {
3057                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3058                 goto out_restart;
3059         }
3060
3061         goto out;
3062
3063 out_restart:
3064         /* things keep failing, better restart the hw */
3065         iwl_mvm_nic_restart(mvm, false);
3066
3067 out:
3068         mutex_unlock(&mvm->mutex);
3069
3070         return ret;
3071 }
3072
3073 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3074                                       struct ieee80211_vif_chanctx_switch *vifs,
3075                                       int n_vifs,
3076                                       enum ieee80211_chanctx_switch_mode mode)
3077 {
3078         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3079         int ret;
3080
3081         /* we only support a single-vif right now */
3082         if (n_vifs > 1)
3083                 return -EOPNOTSUPP;
3084
3085         switch (mode) {
3086         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3087                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3088                 break;
3089         case CHANCTX_SWMODE_REASSIGN_VIF:
3090                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3091                 break;
3092         default:
3093                 ret = -EOPNOTSUPP;
3094                 break;
3095         }
3096
3097         return ret;
3098 }
3099
3100 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3101                            struct ieee80211_sta *sta,
3102                            bool set)
3103 {
3104         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3105         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3106
3107         if (!mvm_sta || !mvm_sta->vif) {
3108                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3109                 return -EINVAL;
3110         }
3111
3112         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3113 }
3114
3115 #ifdef CONFIG_NL80211_TESTMODE
3116 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3117         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3118         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3119         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3120 };
3121
3122 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3123                                       struct ieee80211_vif *vif,
3124                                       void *data, int len)
3125 {
3126         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3127         int err;
3128         u32 noa_duration;
3129
3130         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3131         if (err)
3132                 return err;
3133
3134         if (!tb[IWL_MVM_TM_ATTR_CMD])
3135                 return -EINVAL;
3136
3137         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3138         case IWL_MVM_TM_CMD_SET_NOA:
3139                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3140                     !vif->bss_conf.enable_beacon ||
3141                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3142                         return -EINVAL;
3143
3144                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3145                 if (noa_duration >= vif->bss_conf.beacon_int)
3146                         return -EINVAL;
3147
3148                 mvm->noa_duration = noa_duration;
3149                 mvm->noa_vif = vif;
3150
3151                 return iwl_mvm_update_quotas(mvm, NULL);
3152         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3153                 /* must be associated client vif - ignore authorized */
3154                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3155                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3156                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3157                         return -EINVAL;
3158
3159                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3160                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3161                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3162         }
3163
3164         return -EOPNOTSUPP;
3165 }
3166
3167 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3168                                     struct ieee80211_vif *vif,
3169                                     void *data, int len)
3170 {
3171         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3172         int err;
3173
3174         mutex_lock(&mvm->mutex);
3175         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3176         mutex_unlock(&mvm->mutex);
3177
3178         return err;
3179 }
3180 #endif
3181
3182 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3183                                    struct ieee80211_vif *vif,
3184                                    struct ieee80211_channel_switch *chsw)
3185 {
3186         /* By implementing this operation, we prevent mac80211 from
3187          * starting its own channel switch timer, so that we can call
3188          * ieee80211_chswitch_done() ourselves at the right time
3189          * (which is when the absence time event starts).
3190          */
3191
3192         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3193                            "dummy channel switch op\n");
3194 }
3195
3196 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3197                                       struct ieee80211_vif *vif,
3198                                       struct ieee80211_channel_switch *chsw)
3199 {
3200         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3201         struct ieee80211_vif *csa_vif;
3202         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3203         u32 apply_time;
3204         int ret;
3205
3206         mutex_lock(&mvm->mutex);
3207
3208         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3209                            chsw->chandef.center_freq1);
3210
3211         switch (vif->type) {
3212         case NL80211_IFTYPE_AP:
3213                 csa_vif =
3214                         rcu_dereference_protected(mvm->csa_vif,
3215                                                   lockdep_is_held(&mvm->mutex));
3216                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3217                               "Another CSA is already in progress")) {
3218                         ret = -EBUSY;
3219                         goto out_unlock;
3220                 }
3221
3222                 rcu_assign_pointer(mvm->csa_vif, vif);
3223
3224                 if (WARN_ONCE(mvmvif->csa_countdown,
3225                               "Previous CSA countdown didn't complete")) {
3226                         ret = -EBUSY;
3227                         goto out_unlock;
3228                 }
3229
3230                 break;
3231         case NL80211_IFTYPE_STATION:
3232                 /* Schedule the time event to a bit before beacon 1,
3233                  * to make sure we're in the new channel when the
3234                  * GO/AP arrives.
3235                  */
3236                 apply_time = chsw->device_timestamp +
3237                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3238                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3239
3240                 if (chsw->block_tx)
3241                         iwl_mvm_csa_client_absent(mvm, vif);
3242
3243                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3244                                             apply_time);
3245                 if (mvmvif->bf_data.bf_enabled) {
3246                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3247                         if (ret)
3248                                 goto out_unlock;
3249                 }
3250
3251                 break;
3252         default:
3253                 break;
3254         }
3255
3256         mvmvif->ps_disabled = true;
3257
3258         ret = iwl_mvm_power_update_ps(mvm);
3259         if (ret)
3260                 goto out_unlock;
3261
3262         /* we won't be on this channel any longer */
3263         iwl_mvm_teardown_tdls_peers(mvm);
3264
3265 out_unlock:
3266         mutex_unlock(&mvm->mutex);
3267
3268         return ret;
3269 }
3270
3271 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3272                                        struct ieee80211_vif *vif)
3273 {
3274         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3275         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3276         int ret;
3277
3278         mutex_lock(&mvm->mutex);
3279
3280         if (vif->type == NL80211_IFTYPE_STATION) {
3281                 struct iwl_mvm_sta *mvmsta;
3282
3283                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3284                                                           mvmvif->ap_sta_id);
3285
3286                 if (WARN_ON(!mvmsta)) {
3287                         ret = -EIO;
3288                         goto out_unlock;
3289                 }
3290
3291                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3292
3293                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3294
3295                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3296                 if (ret)
3297                         goto out_unlock;
3298
3299                 iwl_mvm_stop_session_protection(mvm, vif);
3300         }
3301
3302         mvmvif->ps_disabled = false;
3303
3304         ret = iwl_mvm_power_update_ps(mvm);
3305
3306 out_unlock:
3307         mutex_unlock(&mvm->mutex);
3308
3309         return ret;
3310 }
3311
3312 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3313                               struct ieee80211_vif *vif, u32 queues, bool drop)
3314 {
3315         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3316         struct iwl_mvm_vif *mvmvif;
3317         struct iwl_mvm_sta *mvmsta;
3318         struct ieee80211_sta *sta;
3319         int i;
3320         u32 msk = 0;
3321
3322         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3323                 return;
3324
3325         mutex_lock(&mvm->mutex);
3326         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3327
3328         /* flush the AP-station and all TDLS peers */
3329         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3330                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3331                                                 lockdep_is_held(&mvm->mutex));
3332                 if (IS_ERR_OR_NULL(sta))
3333                         continue;
3334
3335                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3336                 if (mvmsta->vif != vif)
3337                         continue;
3338
3339                 /* make sure only TDLS peers or the AP are flushed */
3340                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3341
3342                 msk |= mvmsta->tfd_queue_msk;
3343         }
3344
3345         if (drop) {
3346                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3347                         IWL_ERR(mvm, "flush request fail\n");
3348                 mutex_unlock(&mvm->mutex);
3349         } else {
3350                 mutex_unlock(&mvm->mutex);
3351
3352                 /* this can take a while, and we may need/want other operations
3353                  * to succeed while doing this, so do it without the mutex held
3354                  */
3355                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3356         }
3357 }
3358
3359 const struct ieee80211_ops iwl_mvm_hw_ops = {
3360         .tx = iwl_mvm_mac_tx,
3361         .ampdu_action = iwl_mvm_mac_ampdu_action,
3362         .start = iwl_mvm_mac_start,
3363         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3364         .stop = iwl_mvm_mac_stop,
3365         .add_interface = iwl_mvm_mac_add_interface,
3366         .remove_interface = iwl_mvm_mac_remove_interface,
3367         .config = iwl_mvm_mac_config,
3368         .prepare_multicast = iwl_mvm_prepare_multicast,
3369         .configure_filter = iwl_mvm_configure_filter,
3370         .bss_info_changed = iwl_mvm_bss_info_changed,
3371         .hw_scan = iwl_mvm_mac_hw_scan,
3372         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3373         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3374         .sta_state = iwl_mvm_mac_sta_state,
3375         .sta_notify = iwl_mvm_mac_sta_notify,
3376         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3377         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3378         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3379         .sta_rc_update = iwl_mvm_sta_rc_update,
3380         .conf_tx = iwl_mvm_mac_conf_tx,
3381         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3382         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3383         .flush = iwl_mvm_mac_flush,
3384         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3385         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3386         .set_key = iwl_mvm_mac_set_key,
3387         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3388         .remain_on_channel = iwl_mvm_roc,
3389         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3390         .add_chanctx = iwl_mvm_add_chanctx,
3391         .remove_chanctx = iwl_mvm_remove_chanctx,
3392         .change_chanctx = iwl_mvm_change_chanctx,
3393         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3394         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3395         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3396
3397         .start_ap = iwl_mvm_start_ap_ibss,
3398         .stop_ap = iwl_mvm_stop_ap_ibss,
3399         .join_ibss = iwl_mvm_start_ap_ibss,
3400         .leave_ibss = iwl_mvm_stop_ap_ibss,
3401
3402         .set_tim = iwl_mvm_set_tim,
3403
3404         .channel_switch = iwl_mvm_channel_switch,
3405         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3406         .post_channel_switch = iwl_mvm_post_channel_switch,
3407
3408         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3409         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3410         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3411
3412         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3413
3414 #ifdef CONFIG_PM_SLEEP
3415         /* look at d3.c */
3416         .suspend = iwl_mvm_suspend,
3417         .resume = iwl_mvm_resume,
3418         .set_wakeup = iwl_mvm_set_wakeup,
3419         .set_rekey_data = iwl_mvm_set_rekey_data,
3420 #if IS_ENABLED(CONFIG_IPV6)
3421         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3422 #endif
3423         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3424 #endif
3425 };