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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  23  * USA
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  29  *  Intel Linux Wireless <ilw@linux.intel.com>
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  31  *
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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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  46  *    the documentation and/or other materials provided with the
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  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  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
 381         /* Extract MAC address */
 382         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 383         hw->wiphy->addresses = mvm->addresses;
 384         hw->wiphy->n_addresses = 1;
 385
 386         /* Extract additional MAC addresses if available */
 387         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 388                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 389
 390         for (i = 1; i < num_mac; i++) {
 391                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 392                        ETH_ALEN);
 393                 mvm->addresses[i].addr[5]++;
 394                 hw->wiphy->n_addresses++;
 395         }
 396
 397         iwl_mvm_reset_phy_ctxts(mvm);
 398
 399         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm, false);
 400
 401         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 402
 403         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 404                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 405                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 406         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 407                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 408                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 409
 410         hw->wiphy->hw_version = mvm->trans->hw_id;
 411
 412         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 413                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 414         else
 415                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 416
 417         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10) {
 418                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 419                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 420                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 421                 /* we create the 802.11 header and zero length SSID IE. */
 422                 hw->wiphy->max_sched_scan_ie_len =
 423                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 424         }
 425
 426         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 427                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 428                                NL80211_FEATURE_P2P_GO_OPPPS |
 429                                NL80211_FEATURE_DYNAMIC_SMPS |
 430                                NL80211_FEATURE_STATIC_SMPS |
 431                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 432
 433         if (mvm->fw->ucode_capa.capa[0] &
 434             IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)
 435                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 436         if (mvm->fw->ucode_capa.capa[0] &
 437             IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)
 438                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 439
 440         if (mvm->fw->ucode_capa.capa[0] &
 441             IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)
 442                 hw->wiphy->features |=
 443                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 444
 445         if (mvm->fw->ucode_capa.capa[0] &
 446             IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)
 447                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 448
 449         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 450
 451         /* currently FW API supports only one optional cipher scheme */
 452         if (mvm->fw->cs[0].cipher) {
 453                 mvm->hw->n_cipher_schemes = 1;
 454                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 455         }
 456
 457 #ifdef CONFIG_PM_SLEEP
 458         if (iwl_mvm_is_d0i3_supported(mvm) &&
 459             device_can_wakeup(mvm->trans->dev)) {
 460                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 461                 hw->wiphy->wowlan = &mvm->wowlan;
 462         } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 463             mvm->trans->ops->d3_suspend &&
 464             mvm->trans->ops->d3_resume &&
 465             device_can_wakeup(mvm->trans->dev)) {
 466                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 467                                     WIPHY_WOWLAN_DISCONNECT |
 468                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 469                                     WIPHY_WOWLAN_RFKILL_RELEASE |
 470                                     WIPHY_WOWLAN_NET_DETECT;
 471                 if (!iwlwifi_mod_params.sw_crypto)
 472                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 473                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 474                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 475
 476                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 477                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 478                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 479                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 480                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 481                 hw->wiphy->wowlan = &mvm->wowlan;
 482         }
 483 #endif
 484
 485 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 486         /* assign default bcast filtering configuration */
 487         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 488 #endif
 489
 490         ret = iwl_mvm_leds_init(mvm);
 491         if (ret)
 492                 return ret;
 493
 494         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_TDLS_SUPPORT) {
 495                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 496                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 497         }
 498
 499         if (mvm->fw->ucode_capa.capa[0] &
 500             IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH) {
 501                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 502                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 503         }
 504
 505         ret = ieee80211_register_hw(mvm->hw);
 506         if (ret)
 507                 iwl_mvm_leds_exit(mvm);
 508
 509         return ret;
 510 }
 511
 512 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 513                              struct ieee80211_sta *sta,
 514                              struct sk_buff *skb)
 515 {
 516         struct iwl_mvm_sta *mvmsta;
 517         bool defer = false;
 518
 519         /*
 520          * double check the IN_D0I3 flag both before and after
 521          * taking the spinlock, in order to prevent taking
 522          * the spinlock when not needed.
 523          */
 524         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 525                 return false;
 526
 527         spin_lock(&mvm->d0i3_tx_lock);
 528         /*
 529          * testing the flag again ensures the skb dequeue
 530          * loop (on d0i3 exit) hasn't run yet.
 531          */
 532         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 533                 goto out;
 534
 535         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 536         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 537             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 538                 goto out;
 539
 540         __skb_queue_tail(&mvm->d0i3_tx, skb);
 541         ieee80211_stop_queues(mvm->hw);
 542
 543         /* trigger wakeup */
 544         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 545         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 546
 547         defer = true;
 548 out:
 549         spin_unlock(&mvm->d0i3_tx_lock);
 550         return defer;
 551 }
 552
 553 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 554                            struct ieee80211_tx_control *control,
 555                            struct sk_buff *skb)
 556 {
 557         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 558         struct ieee80211_sta *sta = control->sta;
 559         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 560         struct ieee80211_hdr *hdr = (void *)skb->data;
 561
 562         if (iwl_mvm_is_radio_killed(mvm)) {
 563                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 564                 goto drop;
 565         }
 566
 567         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 568             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 569             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 570                 goto drop;
 571
 572         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 573         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 574                      ieee80211_is_mgmt(hdr->frame_control) &&
 575                      !ieee80211_is_deauth(hdr->frame_control) &&
 576                      !ieee80211_is_disassoc(hdr->frame_control) &&
 577                      !ieee80211_is_action(hdr->frame_control)))
 578                 sta = NULL;
 579
 580         if (sta) {
 581                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 582                         return;
 583                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 584                         goto drop;
 585                 return;
 586         }
 587
 588         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 589                 goto drop;
 590         return;
 591  drop:
 592         ieee80211_free_txskb(hw, skb);
 593 }
 594
 595 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 596 {
 597         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 598                 return false;
 599         return true;
 600 }
 601
 602 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 603 {
 604         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 605                 return false;
 606         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 607                 return true;
 608
 609         /* enabled by default */
 610         return true;
 611 }
 612
 613 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 614                                     struct ieee80211_vif *vif,
 615                                     enum ieee80211_ampdu_mlme_action action,
 616                                     struct ieee80211_sta *sta, u16 tid,
 617                                     u16 *ssn, u8 buf_size)
 618 {
 619         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 620         int ret;
 621         bool tx_agg_ref = false;
 622
 623         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 624                      sta->addr, tid, action);
 625
 626         if (!(mvm->nvm_data->sku_cap_11n_enable))
 627                 return -EACCES;
 628
 629         /* return from D0i3 before starting a new Tx aggregation */
 630         switch (action) {
 631         case IEEE80211_AMPDU_TX_START:
 632         case IEEE80211_AMPDU_TX_STOP_CONT:
 633         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 634         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 635         case IEEE80211_AMPDU_TX_OPERATIONAL:
 636                 /*
 637                  * for tx start, wait synchronously until D0i3 exit to
 638                  * get the correct sequence number for the tid.
 639                  * additionally, some other ampdu actions use direct
 640                  * target access, which is not handled automatically
 641                  * by the trans layer (unlike commands), so wait for
 642                  * d0i3 exit in these cases as well.
 643                  */
 644                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 645                 if (ret)
 646                         return ret;
 647
 648                 tx_agg_ref = true;
 649                 break;
 650         default:
 651                 break;
 652         }
 653
 654         mutex_lock(&mvm->mutex);
 655
 656         switch (action) {
 657         case IEEE80211_AMPDU_RX_START:
 658                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 659                         ret = -EINVAL;
 660                         break;
 661                 }
 662                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 663                 break;
 664         case IEEE80211_AMPDU_RX_STOP:
 665                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 666                 break;
 667         case IEEE80211_AMPDU_TX_START:
 668                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 669                         ret = -EINVAL;
 670                         break;
 671                 }
 672                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 673                 break;
 674         case IEEE80211_AMPDU_TX_STOP_CONT:
 675                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 676                 break;
 677         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 678         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 679                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 680                 break;
 681         case IEEE80211_AMPDU_TX_OPERATIONAL:
 682                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 683                 break;
 684         default:
 685                 WARN_ON_ONCE(1);
 686                 ret = -EINVAL;
 687                 break;
 688         }
 689         mutex_unlock(&mvm->mutex);
 690
 691         /*
 692          * If the tid is marked as started, we won't use it for offloaded
 693          * traffic on the next D0i3 entry. It's safe to unref.
 694          */
 695         if (tx_agg_ref)
 696                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 697
 698         return ret;
 699 }
 700
 701 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 702                                      struct ieee80211_vif *vif)
 703 {
 704         struct iwl_mvm *mvm = data;
 705         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 706
 707         mvmvif->uploaded = false;
 708         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 709
 710         /* does this make sense at all? */
 711         mvmvif->color++;
 712
 713         spin_lock_bh(&mvm->time_event_lock);
 714         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 715         spin_unlock_bh(&mvm->time_event_lock);
 716
 717         mvmvif->phy_ctxt = NULL;
 718         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 719 }
 720
 721 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 722                                      const void *data, size_t datalen)
 723 {
 724         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 725         ssize_t bytes_read;
 726         ssize_t bytes_read_trans;
 727
 728         if (offset < dump_ptrs->op_mode_len) {
 729                 bytes_read = min_t(ssize_t, count,
 730                                    dump_ptrs->op_mode_len - offset);
 731                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 732                        bytes_read);
 733                 offset += bytes_read;
 734                 count -= bytes_read;
 735
 736                 if (count == 0)
 737                         return bytes_read;
 738         } else {
 739                 bytes_read = 0;
 740         }
 741
 742         if (!dump_ptrs->trans_ptr)
 743                 return bytes_read;
 744
 745         offset -= dump_ptrs->op_mode_len;
 746         bytes_read_trans = min_t(ssize_t, count,
 747                                  dump_ptrs->trans_ptr->len - offset);
 748         memcpy(buffer + bytes_read,
 749                (u8 *)dump_ptrs->trans_ptr->data + offset,
 750                bytes_read_trans);
 751
 752         return bytes_read + bytes_read_trans;
 753 }
 754
 755 static void iwl_mvm_free_coredump(const void *data)
 756 {
 757         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 758
 759         vfree(fw_error_dump->op_mode_ptr);
 760         vfree(fw_error_dump->trans_ptr);
 761         kfree(fw_error_dump);
 762 }
 763
 764 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 765 {
 766         struct iwl_fw_error_dump_file *dump_file;
 767         struct iwl_fw_error_dump_data *dump_data;
 768         struct iwl_fw_error_dump_info *dump_info;
 769         struct iwl_mvm_dump_ptrs *fw_error_dump;
 770         const struct fw_img *img;
 771         u32 sram_len, sram_ofs;
 772         u32 file_len, rxf_len;
 773         unsigned long flags;
 774         int reg_val;
 775
 776         lockdep_assert_held(&mvm->mutex);
 777
 778         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
 779         if (!fw_error_dump)
 780                 return;
 781
 782         img = &mvm->fw->img[mvm->cur_ucode];
 783         sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 784         sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 785
 786         /* reading buffer size */
 787         reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
 788         rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
 789
 790         /* the register holds the value divided by 128 */
 791         rxf_len = rxf_len << 7;
 792
 793         file_len = sizeof(*dump_file) +
 794                    sizeof(*dump_data) * 3 +
 795                    sram_len +
 796                    rxf_len +
 797                    sizeof(*dump_info);
 798
 799         dump_file = vzalloc(file_len);
 800         if (!dump_file) {
 801                 kfree(fw_error_dump);
 802                 return;
 803         }
 804
 805         fw_error_dump->op_mode_ptr = dump_file;
 806
 807         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
 808         dump_data = (void *)dump_file->data;
 809
 810         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
 811         dump_data->len = cpu_to_le32(sizeof(*dump_info));
 812         dump_info = (void *) dump_data->data;
 813         dump_info->device_family =
 814                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
 815                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
 816                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
 817         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 818                sizeof(dump_info->fw_human_readable));
 819         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 820                 sizeof(dump_info->dev_human_readable));
 821         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 822                 sizeof(dump_info->bus_human_readable));
 823
 824         dump_data = iwl_fw_error_next_data(dump_data);
 825         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 826         dump_data->len = cpu_to_le32(rxf_len);
 827
 828         if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
 829                 u32 *rxf = (void *)dump_data->data;
 830                 int i;
 831
 832                 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
 833                         iwl_trans_write_prph(mvm->trans,
 834                                              RXF_LD_FENCE_OFFSET_ADDR,
 835                                              i * sizeof(u32));
 836                         rxf[i] = iwl_trans_read_prph(mvm->trans,
 837                                                      RXF_FIFO_RD_FENCE_ADDR);
 838                 }
 839                 iwl_trans_release_nic_access(mvm->trans, &flags);
 840         }
 841
 842         dump_data = iwl_fw_error_next_data(dump_data);
 843         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
 844         dump_data->len = cpu_to_le32(sram_len);
 845         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
 846                                  sram_len);
 847
 848         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
 849         fw_error_dump->op_mode_len = file_len;
 850         if (fw_error_dump->trans_ptr)
 851                 file_len += fw_error_dump->trans_ptr->len;
 852         dump_file->file_len = cpu_to_le32(file_len);
 853
 854         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
 855                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
 856 }
 857
 858 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 859 {
 860         /* clear the D3 reconfig, we only need it to avoid dumping a
 861          * firmware coredump on reconfiguration, we shouldn't do that
 862          * on D3->D0 transition
 863          */
 864         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status))
 865                 iwl_mvm_fw_error_dump(mvm);
 866
 867         iwl_trans_stop_device(mvm->trans);
 868
 869         mvm->scan_status = IWL_MVM_SCAN_NONE;
 870         mvm->ps_disabled = false;
 871         mvm->calibrating = false;
 872
 873         /* just in case one was running */
 874         ieee80211_remain_on_channel_expired(mvm->hw);
 875
 876         ieee80211_iterate_active_interfaces_atomic(
 877                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 878                 iwl_mvm_cleanup_iterator, mvm);
 879
 880         mvm->p2p_device_vif = NULL;
 881         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 882
 883         iwl_mvm_reset_phy_ctxts(mvm);
 884         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 885         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 886         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
 887         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 888         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
 889         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
 890         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
 891         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
 892         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
 893
 894         ieee80211_wake_queues(mvm->hw);
 895
 896         /* cleanup all stale references (scan, roc), but keep the
 897          * ucode_down ref until reconfig is complete */
 898         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 899
 900         /* clear any stale d0i3 state */
 901         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
 902
 903         mvm->vif_count = 0;
 904         mvm->rx_ba_sessions = 0;
 905 }
 906
 907 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
 908 {
 909         int ret;
 910
 911         lockdep_assert_held(&mvm->mutex);
 912
 913         /* Clean up some internal and mac80211 state on restart */
 914         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 915                 iwl_mvm_restart_cleanup(mvm);
 916
 917         ret = iwl_mvm_up(mvm);
 918
 919         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 920                 /* Something went wrong - we need to finish some cleanup
 921                  * that normally iwl_mvm_mac_restart_complete() below
 922                  * would do.
 923                  */
 924                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 925                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
 926         }
 927
 928         return ret;
 929 }
 930
 931 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 932 {
 933         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 934         int ret;
 935
 936         mutex_lock(&mvm->mutex);
 937         ret = __iwl_mvm_mac_start(mvm);
 938         mutex_unlock(&mvm->mutex);
 939
 940         return ret;
 941 }
 942
 943 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
 944 {
 945         int ret;
 946
 947         mutex_lock(&mvm->mutex);
 948
 949         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 950         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 951         ret = iwl_mvm_update_quotas(mvm, NULL);
 952         if (ret)
 953                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 954                         ret);
 955
 956         /* allow transport/FW low power modes */
 957         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 958
 959         /*
 960          * If we have TDLS peers, remove them. We don't know the last seqno/PN
 961          * of packets the FW sent out, so we must reconnect.
 962          */
 963         iwl_mvm_teardown_tdls_peers(mvm);
 964
 965         mutex_unlock(&mvm->mutex);
 966 }
 967
 968 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
 969 {
 970         bool exit_now;
 971
 972         if (!iwl_mvm_is_d0i3_supported(mvm))
 973                 return;
 974
 975         mutex_lock(&mvm->d0i3_suspend_mutex);
 976         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
 977         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
 978                                         &mvm->d0i3_suspend_flags);
 979         mutex_unlock(&mvm->d0i3_suspend_mutex);
 980
 981         if (exit_now) {
 982                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
 983                 _iwl_mvm_exit_d0i3(mvm);
 984         }
 985 }
 986
 987 static void
 988 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
 989                               enum ieee80211_reconfig_type reconfig_type)
 990 {
 991         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 992
 993         switch (reconfig_type) {
 994         case IEEE80211_RECONFIG_TYPE_RESTART:
 995                 iwl_mvm_restart_complete(mvm);
 996                 break;
 997         case IEEE80211_RECONFIG_TYPE_SUSPEND:
 998                 iwl_mvm_resume_complete(mvm);
 999                 break;
1000         }
1001 }
1002
1003 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1004 {
1005         lockdep_assert_held(&mvm->mutex);
1006
1007         /* disallow low power states when the FW is down */
1008         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1009
1010         /* async_handlers_wk is now blocked */
1011
1012         /*
1013          * The work item could be running or queued if the
1014          * ROC time event stops just as we get here.
1015          */
1016         cancel_work_sync(&mvm->roc_done_wk);
1017
1018         iwl_trans_stop_device(mvm->trans);
1019
1020         iwl_mvm_async_handlers_purge(mvm);
1021         /* async_handlers_list is empty and will stay empty: HW is stopped */
1022
1023         /* the fw is stopped, the aux sta is dead: clean up driver state */
1024         iwl_mvm_del_aux_sta(mvm);
1025
1026         mvm->ucode_loaded = false;
1027 }
1028
1029 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1030 {
1031         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1032
1033         flush_work(&mvm->d0i3_exit_work);
1034         flush_work(&mvm->async_handlers_wk);
1035         flush_work(&mvm->fw_error_dump_wk);
1036
1037         mutex_lock(&mvm->mutex);
1038         __iwl_mvm_mac_stop(mvm);
1039         mutex_unlock(&mvm->mutex);
1040
1041         /*
1042          * The worker might have been waiting for the mutex, let it run and
1043          * discover that its list is now empty.
1044          */
1045         cancel_work_sync(&mvm->async_handlers_wk);
1046 }
1047
1048 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1049 {
1050         u16 i;
1051
1052         lockdep_assert_held(&mvm->mutex);
1053
1054         for (i = 0; i < NUM_PHY_CTX; i++)
1055                 if (!mvm->phy_ctxts[i].ref)
1056                         return &mvm->phy_ctxts[i];
1057
1058         IWL_ERR(mvm, "No available PHY context\n");
1059         return NULL;
1060 }
1061
1062 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1063                                 s8 tx_power)
1064 {
1065         /* FW is in charge of regulatory enforcement */
1066         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1067                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1068                 .pwr_restriction = cpu_to_le16(tx_power),
1069         };
1070
1071         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1072                                     sizeof(reduce_txpwr_cmd),
1073                                     &reduce_txpwr_cmd);
1074 }
1075
1076 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1077                                      struct ieee80211_vif *vif)
1078 {
1079         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1080         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1081         int ret;
1082
1083         /*
1084          * make sure D0i3 exit is completed, otherwise a target access
1085          * during tx queue configuration could be done when still in
1086          * D0i3 state.
1087          */
1088         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1089         if (ret)
1090                 return ret;
1091
1092         /*
1093          * Not much to do here. The stack will not allow interface
1094          * types or combinations that we didn't advertise, so we
1095          * don't really have to check the types.
1096          */
1097
1098         mutex_lock(&mvm->mutex);
1099
1100         /* Allocate resources for the MAC context, and add it to the fw  */
1101         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1102         if (ret)
1103                 goto out_unlock;
1104
1105         /* Counting number of interfaces is needed for legacy PM */
1106         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1107                 mvm->vif_count++;
1108
1109         /*
1110          * The AP binding flow can be done only after the beacon
1111          * template is configured (which happens only in the mac80211
1112          * start_ap() flow), and adding the broadcast station can happen
1113          * only after the binding.
1114          * In addition, since modifying the MAC before adding a bcast
1115          * station is not allowed by the FW, delay the adding of MAC context to
1116          * the point where we can also add the bcast station.
1117          * In short: there's not much we can do at this point, other than
1118          * allocating resources :)
1119          */
1120         if (vif->type == NL80211_IFTYPE_AP ||
1121             vif->type == NL80211_IFTYPE_ADHOC) {
1122                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1123                 if (ret) {
1124                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1125                         goto out_release;
1126                 }
1127
1128                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1129                 goto out_unlock;
1130         }
1131
1132         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1133         if (ret)
1134                 goto out_release;
1135
1136         ret = iwl_mvm_power_update_mac(mvm);
1137         if (ret)
1138                 goto out_release;
1139
1140         /* beacon filtering */
1141         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1142         if (ret)
1143                 goto out_remove_mac;
1144
1145         if (!mvm->bf_allowed_vif &&
1146             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1147                 mvm->bf_allowed_vif = mvmvif;
1148                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1149                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1150         }
1151
1152         /*
1153          * P2P_DEVICE interface does not have a channel context assigned to it,
1154          * so a dedicated PHY context is allocated to it and the corresponding
1155          * MAC context is bound to it at this stage.
1156          */
1157         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1158
1159                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1160                 if (!mvmvif->phy_ctxt) {
1161                         ret = -ENOSPC;
1162                         goto out_free_bf;
1163                 }
1164
1165                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1166                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1167                 if (ret)
1168                         goto out_unref_phy;
1169
1170                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1171                 if (ret)
1172                         goto out_unbind;
1173
1174                 /* Save a pointer to p2p device vif, so it can later be used to
1175                  * update the p2p device MAC when a GO is started/stopped */
1176                 mvm->p2p_device_vif = vif;
1177         }
1178
1179         iwl_mvm_vif_dbgfs_register(mvm, vif);
1180         goto out_unlock;
1181
1182  out_unbind:
1183         iwl_mvm_binding_remove_vif(mvm, vif);
1184  out_unref_phy:
1185         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1186  out_free_bf:
1187         if (mvm->bf_allowed_vif == mvmvif) {
1188                 mvm->bf_allowed_vif = NULL;
1189                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1190                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1191         }
1192  out_remove_mac:
1193         mvmvif->phy_ctxt = NULL;
1194         iwl_mvm_mac_ctxt_remove(mvm, vif);
1195  out_release:
1196         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1197                 mvm->vif_count--;
1198
1199         iwl_mvm_mac_ctxt_release(mvm, vif);
1200  out_unlock:
1201         mutex_unlock(&mvm->mutex);
1202
1203         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1204
1205         return ret;
1206 }
1207
1208 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1209                                         struct ieee80211_vif *vif)
1210 {
1211         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1212
1213         if (tfd_msk) {
1214                 mutex_lock(&mvm->mutex);
1215                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1216                 mutex_unlock(&mvm->mutex);
1217         }
1218
1219         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1220                 /*
1221                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1222                  * We assume here that all the packets sent to the OFFCHANNEL
1223                  * queue are sent in ROC session.
1224                  */
1225                 flush_work(&mvm->roc_done_wk);
1226         } else {
1227                 /*
1228                  * By now, all the AC queues are empty. The AGG queues are
1229                  * empty too. We already got all the Tx responses for all the
1230                  * packets in the queues. The drain work can have been
1231                  * triggered. Flush it.
1232                  */
1233                 flush_work(&mvm->sta_drained_wk);
1234         }
1235 }
1236
1237 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1238                                          struct ieee80211_vif *vif)
1239 {
1240         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1241         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1242
1243         iwl_mvm_prepare_mac_removal(mvm, vif);
1244
1245         mutex_lock(&mvm->mutex);
1246
1247         if (mvm->bf_allowed_vif == mvmvif) {
1248                 mvm->bf_allowed_vif = NULL;
1249                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1250                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1251         }
1252
1253         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1254
1255         /*
1256          * For AP/GO interface, the tear down of the resources allocated to the
1257          * interface is be handled as part of the stop_ap flow.
1258          */
1259         if (vif->type == NL80211_IFTYPE_AP ||
1260             vif->type == NL80211_IFTYPE_ADHOC) {
1261 #ifdef CONFIG_NL80211_TESTMODE
1262                 if (vif == mvm->noa_vif) {
1263                         mvm->noa_vif = NULL;
1264                         mvm->noa_duration = 0;
1265                 }
1266 #endif
1267                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1268                 goto out_release;
1269         }
1270
1271         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1272                 mvm->p2p_device_vif = NULL;
1273                 iwl_mvm_rm_bcast_sta(mvm, vif);
1274                 iwl_mvm_binding_remove_vif(mvm, vif);
1275                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1276                 mvmvif->phy_ctxt = NULL;
1277         }
1278
1279         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1280                 mvm->vif_count--;
1281
1282         iwl_mvm_power_update_mac(mvm);
1283         iwl_mvm_mac_ctxt_remove(mvm, vif);
1284
1285 out_release:
1286         iwl_mvm_mac_ctxt_release(mvm, vif);
1287         mutex_unlock(&mvm->mutex);
1288 }
1289
1290 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1291 {
1292         return 0;
1293 }
1294
1295 struct iwl_mvm_mc_iter_data {
1296         struct iwl_mvm *mvm;
1297         int port_id;
1298 };
1299
1300 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1301                                       struct ieee80211_vif *vif)
1302 {
1303         struct iwl_mvm_mc_iter_data *data = _data;
1304         struct iwl_mvm *mvm = data->mvm;
1305         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1306         int ret, len;
1307
1308         /* if we don't have free ports, mcast frames will be dropped */
1309         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1310                 return;
1311
1312         if (vif->type != NL80211_IFTYPE_STATION ||
1313             !vif->bss_conf.assoc)
1314                 return;
1315
1316         cmd->port_id = data->port_id++;
1317         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1318         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1319
1320         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1321         if (ret)
1322                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1323 }
1324
1325 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1326 {
1327         struct iwl_mvm_mc_iter_data iter_data = {
1328                 .mvm = mvm,
1329         };
1330
1331         lockdep_assert_held(&mvm->mutex);
1332
1333         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1334                 return;
1335
1336         ieee80211_iterate_active_interfaces_atomic(
1337                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1338                 iwl_mvm_mc_iface_iterator, &iter_data);
1339 }
1340
1341 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1342                                      struct netdev_hw_addr_list *mc_list)
1343 {
1344         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1345         struct iwl_mcast_filter_cmd *cmd;
1346         struct netdev_hw_addr *addr;
1347         int addr_count;
1348         bool pass_all;
1349         int len;
1350
1351         addr_count = netdev_hw_addr_list_count(mc_list);
1352         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1353                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1354         if (pass_all)
1355                 addr_count = 0;
1356
1357         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1358         cmd = kzalloc(len, GFP_ATOMIC);
1359         if (!cmd)
1360                 return 0;
1361
1362         if (pass_all) {
1363                 cmd->pass_all = 1;
1364                 return (u64)(unsigned long)cmd;
1365         }
1366
1367         netdev_hw_addr_list_for_each(addr, mc_list) {
1368                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1369                                    cmd->count, addr->addr);
1370                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1371                        addr->addr, ETH_ALEN);
1372                 cmd->count++;
1373         }
1374
1375         return (u64)(unsigned long)cmd;
1376 }
1377
1378 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1379                                      unsigned int changed_flags,
1380                                      unsigned int *total_flags,
1381                                      u64 multicast)
1382 {
1383         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1384         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1385
1386         mutex_lock(&mvm->mutex);
1387
1388         /* replace previous configuration */
1389         kfree(mvm->mcast_filter_cmd);
1390         mvm->mcast_filter_cmd = cmd;
1391
1392         if (!cmd)
1393                 goto out;
1394
1395         iwl_mvm_recalc_multicast(mvm);
1396 out:
1397         mutex_unlock(&mvm->mutex);
1398         *total_flags = 0;
1399 }
1400
1401 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1402 struct iwl_bcast_iter_data {
1403         struct iwl_mvm *mvm;
1404         struct iwl_bcast_filter_cmd *cmd;
1405         u8 current_filter;
1406 };
1407
1408 static void
1409 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1410                          const struct iwl_fw_bcast_filter *in_filter,
1411                          struct iwl_fw_bcast_filter *out_filter)
1412 {
1413         struct iwl_fw_bcast_filter_attr *attr;
1414         int i;
1415
1416         memcpy(out_filter, in_filter, sizeof(*out_filter));
1417
1418         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1419                 attr = &out_filter->attrs[i];
1420
1421                 if (!attr->mask)
1422                         break;
1423
1424                 switch (attr->reserved1) {
1425                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1426                         if (vif->bss_conf.arp_addr_cnt != 1) {
1427                                 attr->mask = 0;
1428                                 continue;
1429                         }
1430
1431                         attr->val = vif->bss_conf.arp_addr_list[0];
1432                         break;
1433                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1434                         attr->val = *(__be32 *)&vif->addr[2];
1435                         break;
1436                 default:
1437                         break;
1438                 }
1439                 attr->reserved1 = 0;
1440                 out_filter->num_attrs++;
1441         }
1442 }
1443
1444 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1445                                           struct ieee80211_vif *vif)
1446 {
1447         struct iwl_bcast_iter_data *data = _data;
1448         struct iwl_mvm *mvm = data->mvm;
1449         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1450         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1451         struct iwl_fw_bcast_mac *bcast_mac;
1452         int i;
1453
1454         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1455                 return;
1456
1457         bcast_mac = &cmd->macs[mvmvif->id];
1458
1459         /*
1460          * enable filtering only for associated stations, but not for P2P
1461          * Clients
1462          */
1463         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1464             !vif->bss_conf.assoc)
1465                 return;
1466
1467         bcast_mac->default_discard = 1;
1468
1469         /* copy all configured filters */
1470         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1471                 /*
1472                  * Make sure we don't exceed our filters limit.
1473                  * if there is still a valid filter to be configured,
1474                  * be on the safe side and just allow bcast for this mac.
1475                  */
1476                 if (WARN_ON_ONCE(data->current_filter >=
1477                                  ARRAY_SIZE(cmd->filters))) {
1478                         bcast_mac->default_discard = 0;
1479                         bcast_mac->attached_filters = 0;
1480                         break;
1481                 }
1482
1483                 iwl_mvm_set_bcast_filter(vif,
1484                                          &mvm->bcast_filters[i],
1485                                          &cmd->filters[data->current_filter]);
1486
1487                 /* skip current filter if it contains no attributes */
1488                 if (!cmd->filters[data->current_filter].num_attrs)
1489                         continue;
1490
1491                 /* attach the filter to current mac */
1492                 bcast_mac->attached_filters |=
1493                                 cpu_to_le16(BIT(data->current_filter));
1494
1495                 data->current_filter++;
1496         }
1497 }
1498
1499 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1500                                     struct iwl_bcast_filter_cmd *cmd)
1501 {
1502         struct iwl_bcast_iter_data iter_data = {
1503                 .mvm = mvm,
1504                 .cmd = cmd,
1505         };
1506
1507         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1508                 return false;
1509
1510         memset(cmd, 0, sizeof(*cmd));
1511         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1512         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1513
1514 #ifdef CONFIG_IWLWIFI_DEBUGFS
1515         /* use debugfs filters/macs if override is configured */
1516         if (mvm->dbgfs_bcast_filtering.override) {
1517                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1518                        sizeof(cmd->filters));
1519                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1520                        sizeof(cmd->macs));
1521                 return true;
1522         }
1523 #endif
1524
1525         /* if no filters are configured, do nothing */
1526         if (!mvm->bcast_filters)
1527                 return false;
1528
1529         /* configure and attach these filters for each associated sta vif */
1530         ieee80211_iterate_active_interfaces(
1531                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1532                 iwl_mvm_bcast_filter_iterator, &iter_data);
1533
1534         return true;
1535 }
1536 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1537                                           struct ieee80211_vif *vif)
1538 {
1539         struct iwl_bcast_filter_cmd cmd;
1540
1541         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1542                 return 0;
1543
1544         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1545                 return 0;
1546
1547         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1548                                     sizeof(cmd), &cmd);
1549 }
1550 #else
1551 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1552                                                  struct ieee80211_vif *vif)
1553 {
1554         return 0;
1555 }
1556 #endif
1557
1558 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1559                                              struct ieee80211_vif *vif,
1560                                              struct ieee80211_bss_conf *bss_conf,
1561                                              u32 changes)
1562 {
1563         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1564         int ret;
1565
1566         /*
1567          * Re-calculate the tsf id, as the master-slave relations depend on the
1568          * beacon interval, which was not known when the station interface was
1569          * added.
1570          */
1571         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1572                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1573
1574         /*
1575          * If we're not associated yet, take the (new) BSSID before associating
1576          * so the firmware knows. If we're already associated, then use the old
1577          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1578          * branch for disassociation below.
1579          */
1580         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1581                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1582
1583         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1584         if (ret)
1585                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1586
1587         /* after sending it once, adopt mac80211 data */
1588         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1589         mvmvif->associated = bss_conf->assoc;
1590
1591         if (changes & BSS_CHANGED_ASSOC) {
1592                 if (bss_conf->assoc) {
1593                         /* add quota for this interface */
1594                         ret = iwl_mvm_update_quotas(mvm, NULL);
1595                         if (ret) {
1596                                 IWL_ERR(mvm, "failed to update quotas\n");
1597                                 return;
1598                         }
1599
1600                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1601                                      &mvm->status)) {
1602                                 /*
1603                                  * If we're restarting then the firmware will
1604                                  * obviously have lost synchronisation with
1605                                  * the AP. It will attempt to synchronise by
1606                                  * itself, but we can make it more reliable by
1607                                  * scheduling a session protection time event.
1608                                  *
1609                                  * The firmware needs to receive a beacon to
1610                                  * catch up with synchronisation, use 110% of
1611                                  * the beacon interval.
1612                                  *
1613                                  * Set a large maximum delay to allow for more
1614                                  * than a single interface.
1615                                  */
1616                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1617                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1618                                                         5 * dur, false);
1619                         }
1620
1621                         iwl_mvm_sf_update(mvm, vif, false);
1622                         iwl_mvm_power_vif_assoc(mvm, vif);
1623                         if (vif->p2p) {
1624                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1625                                 iwl_mvm_update_smps(mvm, vif,
1626                                                     IWL_MVM_SMPS_REQ_PROT,
1627                                                     IEEE80211_SMPS_DYNAMIC);
1628                         }
1629                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1630                         /*
1631                          * If update fails - SF might be running in associated
1632                          * mode while disassociated - which is forbidden.
1633                          */
1634                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1635                                   "Failed to update SF upon disassociation\n");
1636
1637                         /* remove AP station now that the MAC is unassoc */
1638                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1639                         if (ret)
1640                                 IWL_ERR(mvm, "failed to remove AP station\n");
1641
1642                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1643                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1644                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1645                         /* remove quota for this interface */
1646                         ret = iwl_mvm_update_quotas(mvm, NULL);
1647                         if (ret)
1648                                 IWL_ERR(mvm, "failed to update quotas\n");
1649
1650                         if (vif->p2p)
1651                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1652
1653                         /* this will take the cleared BSSID from bss_conf */
1654                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1655                         if (ret)
1656                                 IWL_ERR(mvm,
1657                                         "failed to update MAC %pM (clear after unassoc)\n",
1658                                         vif->addr);
1659                 }
1660
1661                 iwl_mvm_recalc_multicast(mvm);
1662                 iwl_mvm_configure_bcast_filter(mvm, vif);
1663
1664                 /* reset rssi values */
1665                 mvmvif->bf_data.ave_beacon_signal = 0;
1666
1667                 iwl_mvm_bt_coex_vif_change(mvm);
1668                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1669                                     IEEE80211_SMPS_AUTOMATIC);
1670         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1671                 /*
1672                  * We received a beacon _after_ association so
1673                  * remove the session protection.
1674                  */
1675                 iwl_mvm_remove_time_event(mvm, mvmvif,
1676                                           &mvmvif->time_event_data);
1677         }
1678
1679         if (changes & BSS_CHANGED_BEACON_INFO) {
1680                 iwl_mvm_sf_update(mvm, vif, false);
1681                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1682         }
1683
1684         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
1685                 ret = iwl_mvm_power_update_mac(mvm);
1686                 if (ret)
1687                         IWL_ERR(mvm, "failed to update power mode\n");
1688         }
1689
1690         if (changes & BSS_CHANGED_TXPOWER) {
1691                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1692                                 bss_conf->txpower);
1693                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1694         }
1695
1696         if (changes & BSS_CHANGED_CQM) {
1697                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1698                 /* reset cqm events tracking */
1699                 mvmvif->bf_data.last_cqm_event = 0;
1700                 if (mvmvif->bf_data.bf_enabled) {
1701                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1702                         if (ret)
1703                                 IWL_ERR(mvm,
1704                                         "failed to update CQM thresholds\n");
1705                 }
1706         }
1707
1708         if (changes & BSS_CHANGED_ARP_FILTER) {
1709                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1710                 iwl_mvm_configure_bcast_filter(mvm, vif);
1711         }
1712 }
1713
1714 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1715                                  struct ieee80211_vif *vif)
1716 {
1717         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1718         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1719         int ret;
1720
1721         /*
1722          * iwl_mvm_mac_ctxt_add() might read directly from the device
1723          * (the system time), so make sure it is available.
1724          */
1725         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
1726         if (ret)
1727                 return ret;
1728
1729         mutex_lock(&mvm->mutex);
1730
1731         /* Send the beacon template */
1732         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1733         if (ret)
1734                 goto out_unlock;
1735
1736         /*
1737          * Re-calculate the tsf id, as the master-slave relations depend on the
1738          * beacon interval, which was not known when the AP interface was added.
1739          */
1740         if (vif->type == NL80211_IFTYPE_AP)
1741                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1742
1743         /* Add the mac context */
1744         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1745         if (ret)
1746                 goto out_unlock;
1747
1748         /* Perform the binding */
1749         ret = iwl_mvm_binding_add_vif(mvm, vif);
1750         if (ret)
1751                 goto out_remove;
1752
1753         /* Send the bcast station. At this stage the TBTT and DTIM time events
1754          * are added and applied to the scheduler */
1755         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
1756         if (ret)
1757                 goto out_unbind;
1758
1759         /* must be set before quota calculations */
1760         mvmvif->ap_ibss_active = true;
1761
1762         /* power updated needs to be done before quotas */
1763         iwl_mvm_power_update_mac(mvm);
1764
1765         ret = iwl_mvm_update_quotas(mvm, NULL);
1766         if (ret)
1767                 goto out_quota_failed;
1768
1769         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1770         if (vif->p2p && mvm->p2p_device_vif)
1771                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1772
1773         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1774
1775         iwl_mvm_bt_coex_vif_change(mvm);
1776
1777         /* we don't support TDLS during DCM */
1778         if (iwl_mvm_phy_ctx_count(mvm) > 1)
1779                 iwl_mvm_teardown_tdls_peers(mvm);
1780
1781         mutex_unlock(&mvm->mutex);
1782         return 0;
1783
1784 out_quota_failed:
1785         iwl_mvm_power_update_mac(mvm);
1786         mvmvif->ap_ibss_active = false;
1787         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1788 out_unbind:
1789         iwl_mvm_binding_remove_vif(mvm, vif);
1790 out_remove:
1791         iwl_mvm_mac_ctxt_remove(mvm, vif);
1792 out_unlock:
1793         mutex_unlock(&mvm->mutex);
1794         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
1795         return ret;
1796 }
1797
1798 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1799                                  struct ieee80211_vif *vif)
1800 {
1801         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1802         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1803
1804         iwl_mvm_prepare_mac_removal(mvm, vif);
1805
1806         mutex_lock(&mvm->mutex);
1807
1808         /* Handle AP stop while in CSA */
1809         if (rcu_access_pointer(mvm->csa_vif) == vif) {
1810                 iwl_mvm_remove_time_event(mvm, mvmvif,
1811                                           &mvmvif->time_event_data);
1812                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1813         }
1814
1815         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1816                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1817                 mvm->csa_tx_block_bcn_timeout = 0;
1818         }
1819
1820         mvmvif->ap_ibss_active = false;
1821         mvm->ap_last_beacon_gp2 = 0;
1822
1823         iwl_mvm_bt_coex_vif_change(mvm);
1824
1825         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1826
1827         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1828         if (vif->p2p && mvm->p2p_device_vif)
1829                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
1830
1831         iwl_mvm_update_quotas(mvm, NULL);
1832         iwl_mvm_send_rm_bcast_sta(mvm, vif);
1833         iwl_mvm_binding_remove_vif(mvm, vif);
1834
1835         iwl_mvm_power_update_mac(mvm);
1836
1837         iwl_mvm_mac_ctxt_remove(mvm, vif);
1838
1839         mutex_unlock(&mvm->mutex);
1840 }
1841
1842 static void
1843 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1844                                  struct ieee80211_vif *vif,
1845                                  struct ieee80211_bss_conf *bss_conf,
1846                                  u32 changes)
1847 {
1848         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1849
1850         /* Changes will be applied when the AP/IBSS is started */
1851         if (!mvmvif->ap_ibss_active)
1852                 return;
1853
1854         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1855                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
1856             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
1857                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1858
1859         /* Need to send a new beacon template to the FW */
1860         if (changes & BSS_CHANGED_BEACON &&
1861             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1862                 IWL_WARN(mvm, "Failed updating beacon data\n");
1863
1864         if (changes & BSS_CHANGED_TXPOWER) {
1865                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1866                                 bss_conf->txpower);
1867                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1868         }
1869
1870 }
1871
1872 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1873                                      struct ieee80211_vif *vif,
1874                                      struct ieee80211_bss_conf *bss_conf,
1875                                      u32 changes)
1876 {
1877         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1878
1879         /*
1880          * iwl_mvm_bss_info_changed_station() might call
1881          * iwl_mvm_protect_session(), which reads directly from
1882          * the device (the system time), so make sure it is available.
1883          */
1884         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
1885                 return;
1886
1887         mutex_lock(&mvm->mutex);
1888
1889         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1890                 iwl_mvm_scan_offload_stop(mvm, true);
1891
1892         switch (vif->type) {
1893         case NL80211_IFTYPE_STATION:
1894                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1895                 break;
1896         case NL80211_IFTYPE_AP:
1897         case NL80211_IFTYPE_ADHOC:
1898                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1899                 break;
1900         default:
1901                 /* shouldn't happen */
1902                 WARN_ON_ONCE(1);
1903         }
1904
1905         mutex_unlock(&mvm->mutex);
1906         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
1907 }
1908
1909 static int iwl_mvm_cancel_scan_wait_notif(struct iwl_mvm *mvm,
1910                                           enum iwl_scan_status scan_type)
1911 {
1912         int ret;
1913         bool wait_for_handlers = false;
1914
1915         mutex_lock(&mvm->mutex);
1916
1917         if (mvm->scan_status != scan_type) {
1918                 ret = 0;
1919                 /* make sure there are no pending notifications */
1920                 wait_for_handlers = true;
1921                 goto out;
1922         }
1923
1924         switch (scan_type) {
1925         case IWL_MVM_SCAN_SCHED:
1926                 ret = iwl_mvm_scan_offload_stop(mvm, true);
1927                 break;
1928         case IWL_MVM_SCAN_OS:
1929                 ret = iwl_mvm_cancel_scan(mvm);
1930                 break;
1931         case IWL_MVM_SCAN_NONE:
1932         default:
1933                 WARN_ON_ONCE(1);
1934                 ret = -EINVAL;
1935                 break;
1936         }
1937         if (ret)
1938                 goto out;
1939
1940         wait_for_handlers = true;
1941 out:
1942         mutex_unlock(&mvm->mutex);
1943
1944         /* make sure we consume the completion notification */
1945         if (wait_for_handlers)
1946                 iwl_mvm_wait_for_async_handlers(mvm);
1947
1948         return ret;
1949 }
1950 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1951                                struct ieee80211_vif *vif,
1952                                struct ieee80211_scan_request *hw_req)
1953 {
1954         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1955         struct cfg80211_scan_request *req = &hw_req->req;
1956         int ret;
1957
1958         if (req->n_channels == 0 ||
1959             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1960                 return -EINVAL;
1961
1962         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1963                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_SCHED);
1964                 if (ret)
1965                         return ret;
1966         }
1967
1968         mutex_lock(&mvm->mutex);
1969
1970         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1971                 ret = -EBUSY;
1972                 goto out;
1973         }
1974
1975         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1976
1977         if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)
1978                 ret = iwl_mvm_scan_umac(mvm, vif, hw_req);
1979         else if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1980                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1981         else
1982                 ret = iwl_mvm_scan_request(mvm, vif, req);
1983
1984         if (ret)
1985                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1986 out:
1987         mutex_unlock(&mvm->mutex);
1988         return ret;
1989 }
1990
1991 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1992                                        struct ieee80211_vif *vif)
1993 {
1994         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1995
1996         mutex_lock(&mvm->mutex);
1997
1998         iwl_mvm_cancel_scan(mvm);
1999
2000         mutex_unlock(&mvm->mutex);
2001 }
2002
2003 static void
2004 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2005                                   struct ieee80211_sta *sta, u16 tids,
2006                                   int num_frames,
2007                                   enum ieee80211_frame_release_type reason,
2008                                   bool more_data)
2009 {
2010         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2011
2012         /* Called when we need to transmit (a) frame(s) from mac80211 */
2013
2014         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2015                                           tids, more_data, false);
2016 }
2017
2018 static void
2019 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2020                                     struct ieee80211_sta *sta, u16 tids,
2021                                     int num_frames,
2022                                     enum ieee80211_frame_release_type reason,
2023                                     bool more_data)
2024 {
2025         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2026
2027         /* Called when we need to transmit (a) frame(s) from agg queue */
2028
2029         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2030                                           tids, more_data, true);
2031 }
2032
2033 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2034                                    struct ieee80211_vif *vif,
2035                                    enum sta_notify_cmd cmd,
2036                                    struct ieee80211_sta *sta)
2037 {
2038         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2039         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2040         int tid;
2041
2042         switch (cmd) {
2043         case STA_NOTIFY_SLEEP:
2044                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2045                         ieee80211_sta_block_awake(hw, sta, true);
2046                 spin_lock_bh(&mvmsta->lock);
2047                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2048                         struct iwl_mvm_tid_data *tid_data;
2049
2050                         tid_data = &mvmsta->tid_data[tid];
2051                         if (tid_data->state != IWL_AGG_ON &&
2052                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2053                                 continue;
2054                         if (iwl_mvm_tid_queued(tid_data) == 0)
2055                                 continue;
2056                         ieee80211_sta_set_buffered(sta, tid, true);
2057                 }
2058                 spin_unlock_bh(&mvmsta->lock);
2059                 /*
2060                  * The fw updates the STA to be asleep. Tx packets on the Tx
2061                  * queues to this station will not be transmitted. The fw will
2062                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2063                  */
2064                 break;
2065         case STA_NOTIFY_AWAKE:
2066                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2067                         break;
2068                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2069                 break;
2070         default:
2071                 break;
2072         }
2073 }
2074
2075 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2076                                        struct ieee80211_vif *vif,
2077                                        struct ieee80211_sta *sta)
2078 {
2079         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2080         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2081
2082         /*
2083          * This is called before mac80211 does RCU synchronisation,
2084          * so here we already invalidate our internal RCU-protected
2085          * station pointer. The rest of the code will thus no longer
2086          * be able to find the station this way, and we don't rely
2087          * on further RCU synchronisation after the sta_state()
2088          * callback deleted the station.
2089          */
2090         mutex_lock(&mvm->mutex);
2091         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2092                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2093                                    ERR_PTR(-ENOENT));
2094         mutex_unlock(&mvm->mutex);
2095 }
2096
2097 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2098                                  struct ieee80211_vif *vif,
2099                                  struct ieee80211_sta *sta,
2100                                  enum ieee80211_sta_state old_state,
2101                                  enum ieee80211_sta_state new_state)
2102 {
2103         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2104         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2105         int ret;
2106
2107         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2108                            sta->addr, old_state, new_state);
2109
2110         /* this would be a mac80211 bug ... but don't crash */
2111         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2112                 return -EINVAL;
2113
2114         /* if a STA is being removed, reuse its ID */
2115         flush_work(&mvm->sta_drained_wk);
2116
2117         mutex_lock(&mvm->mutex);
2118         if (old_state == IEEE80211_STA_NOTEXIST &&
2119             new_state == IEEE80211_STA_NONE) {
2120                 /*
2121                  * Firmware bug - it'll crash if the beacon interval is less
2122                  * than 16. We can't avoid connecting at all, so refuse the
2123                  * station state change, this will cause mac80211 to abandon
2124                  * attempts to connect to this AP, and eventually wpa_s will
2125                  * blacklist the AP...
2126                  */
2127                 if (vif->type == NL80211_IFTYPE_STATION &&
2128                     vif->bss_conf.beacon_int < 16) {
2129                         IWL_ERR(mvm,
2130                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2131                                 sta->addr, vif->bss_conf.beacon_int);
2132                         ret = -EINVAL;
2133                         goto out_unlock;
2134                 }
2135
2136                 if (sta->tdls &&
2137                     (vif->p2p ||
2138                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2139                                                 IWL_MVM_TDLS_STA_COUNT ||
2140                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2141                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2142                         ret = -EBUSY;
2143                         goto out_unlock;
2144                 }
2145
2146                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2147                 if (sta->tdls && ret == 0)
2148                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2149         } else if (old_state == IEEE80211_STA_NONE &&
2150                    new_state == IEEE80211_STA_AUTH) {
2151                 /*
2152                  * EBS may be disabled due to previous failures reported by FW.
2153                  * Reset EBS status here assuming environment has been changed.
2154                  */
2155                 mvm->last_ebs_successful = true;
2156                 ret = 0;
2157         } else if (old_state == IEEE80211_STA_AUTH &&
2158                    new_state == IEEE80211_STA_ASSOC) {
2159                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2160                 if (ret == 0)
2161                         iwl_mvm_rs_rate_init(mvm, sta,
2162                                              mvmvif->phy_ctxt->channel->band,
2163                                              true);
2164         } else if (old_state == IEEE80211_STA_ASSOC &&
2165                    new_state == IEEE80211_STA_AUTHORIZED) {
2166
2167                 /* we don't support TDLS during DCM */
2168                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2169                         iwl_mvm_teardown_tdls_peers(mvm);
2170
2171                 /* enable beacon filtering */
2172                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2173                 ret = 0;
2174         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2175                    new_state == IEEE80211_STA_ASSOC) {
2176                 /* disable beacon filtering */
2177                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2178                 ret = 0;
2179         } else if (old_state == IEEE80211_STA_ASSOC &&
2180                    new_state == IEEE80211_STA_AUTH) {
2181                 ret = 0;
2182         } else if (old_state == IEEE80211_STA_AUTH &&
2183                    new_state == IEEE80211_STA_NONE) {
2184                 ret = 0;
2185         } else if (old_state == IEEE80211_STA_NONE &&
2186                    new_state == IEEE80211_STA_NOTEXIST) {
2187                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2188                 if (sta->tdls)
2189                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2190         } else {
2191                 ret = -EIO;
2192         }
2193  out_unlock:
2194         mutex_unlock(&mvm->mutex);
2195
2196         if (sta->tdls && ret == 0) {
2197                 if (old_state == IEEE80211_STA_NOTEXIST &&
2198                     new_state == IEEE80211_STA_NONE)
2199                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2200                 else if (old_state == IEEE80211_STA_NONE &&
2201                          new_state == IEEE80211_STA_NOTEXIST)
2202                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2203         }
2204
2205         return ret;
2206 }
2207
2208 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2209 {
2210         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2211
2212         mvm->rts_threshold = value;
2213
2214         return 0;
2215 }
2216
2217 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2218                                   struct ieee80211_vif *vif,
2219                                   struct ieee80211_sta *sta, u32 changed)
2220 {
2221         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2222
2223         if (vif->type == NL80211_IFTYPE_STATION &&
2224             changed & IEEE80211_RC_NSS_CHANGED)
2225                 iwl_mvm_sf_update(mvm, vif, false);
2226 }
2227
2228 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2229                                struct ieee80211_vif *vif, u16 ac,
2230                                const struct ieee80211_tx_queue_params *params)
2231 {
2232         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2233         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2234
2235         mvmvif->queue_params[ac] = *params;
2236
2237         /*
2238          * No need to update right away, we'll get BSS_CHANGED_QOS
2239          * The exception is P2P_DEVICE interface which needs immediate update.
2240          */
2241         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2242                 int ret;
2243
2244                 mutex_lock(&mvm->mutex);
2245                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2246                 mutex_unlock(&mvm->mutex);
2247                 return ret;
2248         }
2249         return 0;
2250 }
2251
2252 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2253                                       struct ieee80211_vif *vif)
2254 {
2255         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2256         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2257                            200 + vif->bss_conf.beacon_int);
2258         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2259                                100 + vif->bss_conf.beacon_int);
2260
2261         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2262                 return;
2263
2264         /*
2265          * iwl_mvm_protect_session() reads directly from the device
2266          * (the system time), so make sure it is available.
2267          */
2268         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2269                 return;
2270
2271         mutex_lock(&mvm->mutex);
2272         /* Try really hard to protect the session and hear a beacon */
2273         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2274         mutex_unlock(&mvm->mutex);
2275
2276         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2277 }
2278
2279 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2280                                         struct ieee80211_vif *vif,
2281                                         struct cfg80211_sched_scan_request *req,
2282                                         struct ieee80211_scan_ies *ies)
2283 {
2284         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2285         int ret;
2286
2287         if (!(mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2288                 ret = iwl_mvm_cancel_scan_wait_notif(mvm, IWL_MVM_SCAN_OS);
2289                 if (ret)
2290                         return ret;
2291         }
2292
2293         mutex_lock(&mvm->mutex);
2294
2295         /* Newest FW fixes sched scan while connected on another interface */
2296         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
2297                 if (!vif->bss_conf.idle) {
2298                         ret = -EBUSY;
2299                         goto out;
2300                 }
2301         } else if (!iwl_mvm_is_idle(mvm)) {
2302                 ret = -EBUSY;
2303                 goto out;
2304         }
2305
2306         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
2307                 ret = -EBUSY;
2308                 goto out;
2309         }
2310
2311         ret = iwl_mvm_scan_offload_start(mvm, vif, req, ies);
2312         if (ret)
2313                 mvm->scan_status = IWL_MVM_SCAN_NONE;
2314
2315 out:
2316         mutex_unlock(&mvm->mutex);
2317         return ret;
2318 }
2319
2320 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2321                                        struct ieee80211_vif *vif)
2322 {
2323         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2324         int ret;
2325
2326         mutex_lock(&mvm->mutex);
2327         ret = iwl_mvm_scan_offload_stop(mvm, false);
2328         mutex_unlock(&mvm->mutex);
2329         iwl_mvm_wait_for_async_handlers(mvm);
2330
2331         return ret;
2332
2333 }
2334
2335 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2336                                enum set_key_cmd cmd,
2337                                struct ieee80211_vif *vif,
2338                                struct ieee80211_sta *sta,
2339                                struct ieee80211_key_conf *key)
2340 {
2341         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2342         int ret;
2343
2344         if (iwlwifi_mod_params.sw_crypto) {
2345                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2346                 return -EOPNOTSUPP;
2347         }
2348
2349         switch (key->cipher) {
2350         case WLAN_CIPHER_SUITE_TKIP:
2351                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2352                 /* fall-through */
2353         case WLAN_CIPHER_SUITE_CCMP:
2354                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2355                 break;
2356         case WLAN_CIPHER_SUITE_AES_CMAC:
2357                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2358                 break;
2359         case WLAN_CIPHER_SUITE_WEP40:
2360         case WLAN_CIPHER_SUITE_WEP104:
2361                 /* For non-client mode, only use WEP keys for TX as we probably
2362                  * don't have a station yet anyway and would then have to keep
2363                  * track of the keys, linking them to each of the clients/peers
2364                  * as they appear. For now, don't do that, for performance WEP
2365                  * offload doesn't really matter much, but we need it for some
2366                  * other offload features in client mode.
2367                  */
2368                 if (vif->type != NL80211_IFTYPE_STATION)
2369                         return 0;
2370                 break;
2371         default:
2372                 /* currently FW supports only one optional cipher scheme */
2373                 if (hw->n_cipher_schemes &&
2374                     hw->cipher_schemes->cipher == key->cipher)
2375                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2376                 else
2377                         return -EOPNOTSUPP;
2378         }
2379
2380         mutex_lock(&mvm->mutex);
2381
2382         switch (cmd) {
2383         case SET_KEY:
2384                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2385                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2386                         /*
2387                          * GTK on AP interface is a TX-only key, return 0;
2388                          * on IBSS they're per-station and because we're lazy
2389                          * we don't support them for RX, so do the same.
2390                          */
2391                         ret = 0;
2392                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2393                         break;
2394                 }
2395
2396                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2397                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2398                 if (ret) {
2399                         IWL_WARN(mvm, "set key failed\n");
2400                         /*
2401                          * can't add key for RX, but we don't need it
2402                          * in the device for TX so still return 0
2403                          */
2404                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2405                         ret = 0;
2406                 }
2407
2408                 break;
2409         case DISABLE_KEY:
2410                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2411                         ret = 0;
2412                         break;
2413                 }
2414
2415                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2416                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2417                 break;
2418         default:
2419                 ret = -EINVAL;
2420         }
2421
2422         mutex_unlock(&mvm->mutex);
2423         return ret;
2424 }
2425
2426 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2427                                         struct ieee80211_vif *vif,
2428                                         struct ieee80211_key_conf *keyconf,
2429                                         struct ieee80211_sta *sta,
2430                                         u32 iv32, u16 *phase1key)
2431 {
2432         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2433
2434         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2435                 return;
2436
2437         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2438 }
2439
2440
2441 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2442                                struct iwl_rx_packet *pkt, void *data)
2443 {
2444         struct iwl_mvm *mvm =
2445                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2446         struct iwl_hs20_roc_res *resp;
2447         int resp_len = iwl_rx_packet_payload_len(pkt);
2448         struct iwl_mvm_time_event_data *te_data = data;
2449
2450         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2451                 return true;
2452
2453         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2454                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2455                 return true;
2456         }
2457
2458         resp = (void *)pkt->data;
2459
2460         IWL_DEBUG_TE(mvm,
2461                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
2462                      resp->status, resp->event_unique_id);
2463
2464         te_data->uid = le32_to_cpu(resp->event_unique_id);
2465         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
2466                      te_data->uid);
2467
2468         spin_lock_bh(&mvm->time_event_lock);
2469         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
2470         spin_unlock_bh(&mvm->time_event_lock);
2471
2472         return true;
2473 }
2474
2475 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 5000
2476 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
2477                                     struct ieee80211_channel *channel,
2478                                     struct ieee80211_vif *vif,
2479                                     int duration)
2480 {
2481         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
2482         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2483         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
2484         static const u8 time_event_response[] = { HOT_SPOT_CMD };
2485         struct iwl_notification_wait wait_time_event;
2486         struct iwl_hs20_roc_req aux_roc_req = {
2487                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
2488                 .id_and_color =
2489                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
2490                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
2491                 /* Set the channel info data */
2492                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
2493                         PHY_BAND_24 : PHY_BAND_5,
2494                 .channel_info.channel = channel->hw_value,
2495                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
2496                 /* Set the time and duration */
2497                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
2498                 .apply_time_max_delay =
2499                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
2500                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
2501          };
2502
2503         /* Set the node address */
2504         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
2505
2506         lockdep_assert_held(&mvm->mutex);
2507
2508         spin_lock_bh(&mvm->time_event_lock);
2509
2510         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
2511                 spin_unlock_bh(&mvm->time_event_lock);
2512                 return -EIO;
2513         }
2514
2515         te_data->vif = vif;
2516         te_data->duration = duration;
2517         te_data->id = HOT_SPOT_CMD;
2518
2519         spin_unlock_bh(&mvm->time_event_lock);
2520
2521         /*
2522          * Use a notification wait, which really just processes the
2523          * command response and doesn't wait for anything, in order
2524          * to be able to process the response and get the UID inside
2525          * the RX path. Using CMD_WANT_SKB doesn't work because it
2526          * stores the buffer and then wakes up this thread, by which
2527          * time another notification (that the time event started)
2528          * might already be processed unsuccessfully.
2529          */
2530         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
2531                                    time_event_response,
2532                                    ARRAY_SIZE(time_event_response),
2533                                    iwl_mvm_rx_aux_roc, te_data);
2534
2535         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
2536                                    &aux_roc_req);
2537
2538         if (res) {
2539                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
2540                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
2541                 goto out_clear_te;
2542         }
2543
2544         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
2545         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
2546         /* should never fail */
2547         WARN_ON_ONCE(res);
2548
2549         if (res) {
2550  out_clear_te:
2551                 spin_lock_bh(&mvm->time_event_lock);
2552                 iwl_mvm_te_clear_data(mvm, te_data);
2553                 spin_unlock_bh(&mvm->time_event_lock);
2554         }
2555
2556         return res;
2557 }
2558
2559 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2560                        struct ieee80211_vif *vif,
2561                        struct ieee80211_channel *channel,
2562                        int duration,
2563                        enum ieee80211_roc_type type)
2564 {
2565         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2566         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2567         struct cfg80211_chan_def chandef;
2568         struct iwl_mvm_phy_ctxt *phy_ctxt;
2569         int ret, i;
2570
2571         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2572                            duration, type);
2573
2574         mutex_lock(&mvm->mutex);
2575
2576         switch (vif->type) {
2577         case NL80211_IFTYPE_STATION:
2578                 if (mvm->fw->ucode_capa.capa[0] &
2579                     IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT) {
2580                         /* Use aux roc framework (HS20) */
2581                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
2582                                                        vif, duration);
2583                         goto out_unlock;
2584                 }
2585                 IWL_ERR(mvm, "hotspot not supported\n");
2586                 ret = -EINVAL;
2587                 goto out_unlock;
2588         case NL80211_IFTYPE_P2P_DEVICE:
2589                 /* handle below */
2590                 break;
2591         default:
2592                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
2593                 ret = -EINVAL;
2594                 goto out_unlock;
2595         }
2596
2597         for (i = 0; i < NUM_PHY_CTX; i++) {
2598                 phy_ctxt = &mvm->phy_ctxts[i];
2599                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2600                         continue;
2601
2602                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2603                         /*
2604                          * Unbind the P2P_DEVICE from the current PHY context,
2605                          * and if the PHY context is not used remove it.
2606                          */
2607                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2608                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2609                                 goto out_unlock;
2610
2611                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2612
2613                         /* Bind the P2P_DEVICE to the current PHY Context */
2614                         mvmvif->phy_ctxt = phy_ctxt;
2615
2616                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2617                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2618                                 goto out_unlock;
2619
2620                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2621                         goto schedule_time_event;
2622                 }
2623         }
2624
2625         /* Need to update the PHY context only if the ROC channel changed */
2626         if (channel == mvmvif->phy_ctxt->channel)
2627                 goto schedule_time_event;
2628
2629         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2630
2631         /*
2632          * Change the PHY context configuration as it is currently referenced
2633          * only by the P2P Device MAC
2634          */
2635         if (mvmvif->phy_ctxt->ref == 1) {
2636                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2637                                                &chandef, 1, 1);
2638                 if (ret)
2639                         goto out_unlock;
2640         } else {
2641                 /*
2642                  * The PHY context is shared with other MACs. Need to remove the
2643                  * P2P Device from the binding, allocate an new PHY context and
2644                  * create a new binding
2645                  */
2646                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2647                 if (!phy_ctxt) {
2648                         ret = -ENOSPC;
2649                         goto out_unlock;
2650                 }
2651
2652                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2653                                                1, 1);
2654                 if (ret) {
2655                         IWL_ERR(mvm, "Failed to change PHY context\n");
2656                         goto out_unlock;
2657                 }
2658
2659                 /* Unbind the P2P_DEVICE from the current PHY context */
2660                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2661                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2662                         goto out_unlock;
2663
2664                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2665
2666                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2667                 mvmvif->phy_ctxt = phy_ctxt;
2668
2669                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2670                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2671                         goto out_unlock;
2672
2673                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2674         }
2675
2676 schedule_time_event:
2677         /* Schedule the time events */
2678         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2679
2680 out_unlock:
2681         mutex_unlock(&mvm->mutex);
2682         IWL_DEBUG_MAC80211(mvm, "leave\n");
2683         return ret;
2684 }
2685
2686 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2687 {
2688         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2689
2690         IWL_DEBUG_MAC80211(mvm, "enter\n");
2691
2692         mutex_lock(&mvm->mutex);
2693         iwl_mvm_stop_roc(mvm);
2694         mutex_unlock(&mvm->mutex);
2695
2696         IWL_DEBUG_MAC80211(mvm, "leave\n");
2697         return 0;
2698 }
2699
2700 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2701                                  struct ieee80211_chanctx_conf *ctx)
2702 {
2703         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2704         struct iwl_mvm_phy_ctxt *phy_ctxt;
2705         int ret;
2706
2707         lockdep_assert_held(&mvm->mutex);
2708
2709         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2710
2711         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2712         if (!phy_ctxt) {
2713                 ret = -ENOSPC;
2714                 goto out;
2715         }
2716
2717         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2718                                        ctx->rx_chains_static,
2719                                        ctx->rx_chains_dynamic);
2720         if (ret) {
2721                 IWL_ERR(mvm, "Failed to add PHY context\n");
2722                 goto out;
2723         }
2724
2725         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2726         *phy_ctxt_id = phy_ctxt->id;
2727 out:
2728         return ret;
2729 }
2730
2731 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2732                                struct ieee80211_chanctx_conf *ctx)
2733 {
2734         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2735         int ret;
2736
2737         mutex_lock(&mvm->mutex);
2738         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2739         mutex_unlock(&mvm->mutex);
2740
2741         return ret;
2742 }
2743
2744 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2745                                      struct ieee80211_chanctx_conf *ctx)
2746 {
2747         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2748         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2749
2750         lockdep_assert_held(&mvm->mutex);
2751
2752         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2753 }
2754
2755 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2756                                    struct ieee80211_chanctx_conf *ctx)
2757 {
2758         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2759
2760         mutex_lock(&mvm->mutex);
2761         __iwl_mvm_remove_chanctx(mvm, ctx);
2762         mutex_unlock(&mvm->mutex);
2763 }
2764
2765 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2766                                    struct ieee80211_chanctx_conf *ctx,
2767                                    u32 changed)
2768 {
2769         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2770         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2771         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2772
2773         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2774                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2775                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2776                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2777                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2778                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2779                       phy_ctxt->ref, changed))
2780                 return;
2781
2782         mutex_lock(&mvm->mutex);
2783         iwl_mvm_bt_coex_vif_change(mvm);
2784         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2785                                  ctx->rx_chains_static,
2786                                  ctx->rx_chains_dynamic);
2787         mutex_unlock(&mvm->mutex);
2788 }
2789
2790 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2791                                         struct ieee80211_vif *vif,
2792                                         struct ieee80211_chanctx_conf *ctx,
2793                                         bool switching_chanctx)
2794 {
2795         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2796         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2797         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2798         int ret;
2799
2800         lockdep_assert_held(&mvm->mutex);
2801
2802         mvmvif->phy_ctxt = phy_ctxt;
2803
2804         switch (vif->type) {
2805         case NL80211_IFTYPE_AP:
2806                 /* only needed if we're switching chanctx (i.e. during CSA) */
2807                 if (switching_chanctx) {
2808                         mvmvif->ap_ibss_active = true;
2809                         break;
2810                 }
2811         case NL80211_IFTYPE_ADHOC:
2812                 /*
2813                  * The AP binding flow is handled as part of the start_ap flow
2814                  * (in bss_info_changed), similarly for IBSS.
2815                  */
2816                 ret = 0;
2817                 goto out;
2818         case NL80211_IFTYPE_STATION:
2819                 break;
2820         case NL80211_IFTYPE_MONITOR:
2821                 /* always disable PS when a monitor interface is active */
2822                 mvmvif->ps_disabled = true;
2823                 break;
2824         default:
2825                 ret = -EINVAL;
2826                 goto out;
2827         }
2828
2829         ret = iwl_mvm_binding_add_vif(mvm, vif);
2830         if (ret)
2831                 goto out;
2832
2833         /*
2834          * Power state must be updated before quotas,
2835          * otherwise fw will complain.
2836          */
2837         iwl_mvm_power_update_mac(mvm);
2838
2839         /* Setting the quota at this stage is only required for monitor
2840          * interfaces. For the other types, the bss_info changed flow
2841          * will handle quota settings.
2842          */
2843         if (vif->type == NL80211_IFTYPE_MONITOR) {
2844                 mvmvif->monitor_active = true;
2845                 ret = iwl_mvm_update_quotas(mvm, NULL);
2846                 if (ret)
2847                         goto out_remove_binding;
2848         }
2849
2850         /* Handle binding during CSA */
2851         if (vif->type == NL80211_IFTYPE_AP) {
2852                 iwl_mvm_update_quotas(mvm, NULL);
2853                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2854         }
2855
2856         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
2857                 u32 duration = 2 * vif->bss_conf.beacon_int;
2858
2859                 /* iwl_mvm_protect_session() reads directly from the
2860                  * device (the system time), so make sure it is
2861                  * available.
2862                  */
2863                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
2864                 if (ret)
2865                         goto out_remove_binding;
2866
2867                 /* Protect the session to make sure we hear the first
2868                  * beacon on the new channel.
2869                  */
2870                 iwl_mvm_protect_session(mvm, vif, duration, duration,
2871                                         vif->bss_conf.beacon_int / 2,
2872                                         true);
2873
2874                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
2875
2876                 iwl_mvm_update_quotas(mvm, NULL);
2877         }
2878
2879         goto out;
2880
2881 out_remove_binding:
2882         iwl_mvm_binding_remove_vif(mvm, vif);
2883         iwl_mvm_power_update_mac(mvm);
2884 out:
2885         if (ret)
2886                 mvmvif->phy_ctxt = NULL;
2887         return ret;
2888 }
2889 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2890                                       struct ieee80211_vif *vif,
2891                                       struct ieee80211_chanctx_conf *ctx)
2892 {
2893         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2894         int ret;
2895
2896         mutex_lock(&mvm->mutex);
2897         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2898         mutex_unlock(&mvm->mutex);
2899
2900         return ret;
2901 }
2902
2903 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2904                                            struct ieee80211_vif *vif,
2905                                            struct ieee80211_chanctx_conf *ctx,
2906                                            bool switching_chanctx)
2907 {
2908         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2909         struct ieee80211_vif *disabled_vif = NULL;
2910
2911         lockdep_assert_held(&mvm->mutex);
2912
2913         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2914
2915         switch (vif->type) {
2916         case NL80211_IFTYPE_ADHOC:
2917                 goto out;
2918         case NL80211_IFTYPE_MONITOR:
2919                 mvmvif->monitor_active = false;
2920                 mvmvif->ps_disabled = false;
2921                 break;
2922         case NL80211_IFTYPE_AP:
2923                 /* This part is triggered only during CSA */
2924                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
2925                         goto out;
2926
2927                 mvmvif->csa_countdown = false;
2928
2929                 /* Set CS bit on all the stations */
2930                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2931
2932                 /* Save blocked iface, the timeout is set on the next beacon */
2933                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2934
2935                 mvmvif->ap_ibss_active = false;
2936                 break;
2937         case NL80211_IFTYPE_STATION:
2938                 if (!switching_chanctx)
2939                         break;
2940
2941                 disabled_vif = vif;
2942
2943                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
2944                 break;
2945         default:
2946                 break;
2947         }
2948
2949         iwl_mvm_update_quotas(mvm, disabled_vif);
2950         iwl_mvm_binding_remove_vif(mvm, vif);
2951
2952 out:
2953         mvmvif->phy_ctxt = NULL;
2954         iwl_mvm_power_update_mac(mvm);
2955 }
2956
2957 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2958                                          struct ieee80211_vif *vif,
2959                                          struct ieee80211_chanctx_conf *ctx)
2960 {
2961         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2962
2963         mutex_lock(&mvm->mutex);
2964         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2965         mutex_unlock(&mvm->mutex);
2966 }
2967
2968 static int
2969 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
2970                                 struct ieee80211_vif_chanctx_switch *vifs)
2971 {
2972         int ret;
2973
2974         mutex_lock(&mvm->mutex);
2975         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2976         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2977
2978         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2979         if (ret) {
2980                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2981                 goto out_reassign;
2982         }
2983
2984         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2985                                            true);
2986         if (ret) {
2987                 IWL_ERR(mvm,
2988                         "failed to assign new_ctx during channel switch\n");
2989                 goto out_remove;
2990         }
2991
2992         /* we don't support TDLS during DCM - can be caused by channel switch */
2993         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2994                 iwl_mvm_teardown_tdls_peers(mvm);
2995
2996         goto out;
2997
2998 out_remove:
2999         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3000
3001 out_reassign:
3002         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3003                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3004                 goto out_restart;
3005         }
3006
3007         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3008                                          true)) {
3009                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3010                 goto out_restart;
3011         }
3012
3013         goto out;
3014
3015 out_restart:
3016         /* things keep failing, better restart the hw */
3017         iwl_mvm_nic_restart(mvm, false);
3018
3019 out:
3020         mutex_unlock(&mvm->mutex);
3021
3022         return ret;
3023 }
3024
3025 static int
3026 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3027                                     struct ieee80211_vif_chanctx_switch *vifs)
3028 {
3029         int ret;
3030
3031         mutex_lock(&mvm->mutex);
3032         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3033
3034         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3035                                            true);
3036         if (ret) {
3037                 IWL_ERR(mvm,
3038                         "failed to assign new_ctx during channel switch\n");
3039                 goto out_reassign;
3040         }
3041
3042         goto out;
3043
3044 out_reassign:
3045         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3046                                          true)) {
3047                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3048                 goto out_restart;
3049         }
3050
3051         goto out;
3052
3053 out_restart:
3054         /* things keep failing, better restart the hw */
3055         iwl_mvm_nic_restart(mvm, false);
3056
3057 out:
3058         mutex_unlock(&mvm->mutex);
3059
3060         return ret;
3061 }
3062
3063 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3064                                       struct ieee80211_vif_chanctx_switch *vifs,
3065                                       int n_vifs,
3066                                       enum ieee80211_chanctx_switch_mode mode)
3067 {
3068         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3069         int ret;
3070
3071         /* we only support a single-vif right now */
3072         if (n_vifs > 1)
3073                 return -EOPNOTSUPP;
3074
3075         switch (mode) {
3076         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3077                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3078                 break;
3079         case CHANCTX_SWMODE_REASSIGN_VIF:
3080                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3081                 break;
3082         default:
3083                 ret = -EOPNOTSUPP;
3084                 break;
3085         }
3086
3087         return ret;
3088 }
3089
3090 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3091                            struct ieee80211_sta *sta,
3092                            bool set)
3093 {
3094         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3095         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
3096
3097         if (!mvm_sta || !mvm_sta->vif) {
3098                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3099                 return -EINVAL;
3100         }
3101
3102         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3103 }
3104
3105 #ifdef CONFIG_NL80211_TESTMODE
3106 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3107         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3108         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3109         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3110 };
3111
3112 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3113                                       struct ieee80211_vif *vif,
3114                                       void *data, int len)
3115 {
3116         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3117         int err;
3118         u32 noa_duration;
3119
3120         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3121         if (err)
3122                 return err;
3123
3124         if (!tb[IWL_MVM_TM_ATTR_CMD])
3125                 return -EINVAL;
3126
3127         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3128         case IWL_MVM_TM_CMD_SET_NOA:
3129                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3130                     !vif->bss_conf.enable_beacon ||
3131                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3132                         return -EINVAL;
3133
3134                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3135                 if (noa_duration >= vif->bss_conf.beacon_int)
3136                         return -EINVAL;
3137
3138                 mvm->noa_duration = noa_duration;
3139                 mvm->noa_vif = vif;
3140
3141                 return iwl_mvm_update_quotas(mvm, NULL);
3142         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3143                 /* must be associated client vif - ignore authorized */
3144                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3145                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3146                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3147                         return -EINVAL;
3148
3149                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3150                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3151                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3152         }
3153
3154         return -EOPNOTSUPP;
3155 }
3156
3157 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3158                                     struct ieee80211_vif *vif,
3159                                     void *data, int len)
3160 {
3161         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3162         int err;
3163
3164         mutex_lock(&mvm->mutex);
3165         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3166         mutex_unlock(&mvm->mutex);
3167
3168         return err;
3169 }
3170 #endif
3171
3172 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3173                                    struct ieee80211_vif *vif,
3174                                    struct ieee80211_channel_switch *chsw)
3175 {
3176         /* By implementing this operation, we prevent mac80211 from
3177          * starting its own channel switch timer, so that we can call
3178          * ieee80211_chswitch_done() ourselves at the right time
3179          * (which is when the absence time event starts).
3180          */
3181
3182         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3183                            "dummy channel switch op\n");
3184 }
3185
3186 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3187                                       struct ieee80211_vif *vif,
3188                                       struct ieee80211_channel_switch *chsw)
3189 {
3190         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3191         struct ieee80211_vif *csa_vif;
3192         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3193         u32 apply_time;
3194         int ret;
3195
3196         mutex_lock(&mvm->mutex);
3197
3198         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3199                            chsw->chandef.center_freq1);
3200
3201         switch (vif->type) {
3202         case NL80211_IFTYPE_AP:
3203                 csa_vif =
3204                         rcu_dereference_protected(mvm->csa_vif,
3205                                                   lockdep_is_held(&mvm->mutex));
3206                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3207                               "Another CSA is already in progress")) {
3208                         ret = -EBUSY;
3209                         goto out_unlock;
3210                 }
3211
3212                 rcu_assign_pointer(mvm->csa_vif, vif);
3213
3214                 if (WARN_ONCE(mvmvif->csa_countdown,
3215                               "Previous CSA countdown didn't complete")) {
3216                         ret = -EBUSY;
3217                         goto out_unlock;
3218                 }
3219
3220                 break;
3221         case NL80211_IFTYPE_STATION:
3222                 /* Schedule the time event to a bit before beacon 1,
3223                  * to make sure we're in the new channel when the
3224                  * GO/AP arrives.
3225                  */
3226                 apply_time = chsw->device_timestamp +
3227                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3228                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3229
3230                 if (chsw->block_tx)
3231                         iwl_mvm_csa_client_absent(mvm, vif);
3232
3233                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3234                                             apply_time);
3235                 if (mvmvif->bf_data.bf_enabled) {
3236                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3237                         if (ret)
3238                                 goto out_unlock;
3239                 }
3240
3241                 break;
3242         default:
3243                 break;
3244         }
3245
3246         mvmvif->ps_disabled = true;
3247
3248         ret = iwl_mvm_power_update_ps(mvm);
3249         if (ret)
3250                 goto out_unlock;
3251
3252         /* we won't be on this channel any longer */
3253         iwl_mvm_teardown_tdls_peers(mvm);
3254
3255 out_unlock:
3256         mutex_unlock(&mvm->mutex);
3257
3258         return ret;
3259 }
3260
3261 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3262                                        struct ieee80211_vif *vif)
3263 {
3264         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3265         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3266         int ret;
3267
3268         mutex_lock(&mvm->mutex);
3269
3270         if (vif->type == NL80211_IFTYPE_STATION) {
3271                 struct iwl_mvm_sta *mvmsta;
3272
3273                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3274                                                           mvmvif->ap_sta_id);
3275
3276                 if (WARN_ON(!mvmsta)) {
3277                         ret = -EIO;
3278                         goto out_unlock;
3279                 }
3280
3281                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3282
3283                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3284
3285                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3286                 if (ret)
3287                         goto out_unlock;
3288
3289                 iwl_mvm_stop_session_protection(mvm, vif);
3290         }
3291
3292         mvmvif->ps_disabled = false;
3293
3294         ret = iwl_mvm_power_update_ps(mvm);
3295
3296 out_unlock:
3297         mutex_unlock(&mvm->mutex);
3298
3299         return ret;
3300 }
3301
3302 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3303                               struct ieee80211_vif *vif, u32 queues, bool drop)
3304 {
3305         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3306         struct iwl_mvm_vif *mvmvif;
3307         struct iwl_mvm_sta *mvmsta;
3308         struct ieee80211_sta *sta;
3309         int i;
3310         u32 msk = 0;
3311
3312         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3313                 return;
3314
3315         mutex_lock(&mvm->mutex);
3316         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3317
3318         /* flush the AP-station and all TDLS peers */
3319         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3320                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3321                                                 lockdep_is_held(&mvm->mutex));
3322                 if (IS_ERR_OR_NULL(sta))
3323                         continue;
3324
3325                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3326                 if (mvmsta->vif != vif)
3327                         continue;
3328
3329                 /* make sure only TDLS peers or the AP are flushed */
3330                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3331
3332                 msk |= mvmsta->tfd_queue_msk;
3333         }
3334
3335         if (drop) {
3336                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3337                         IWL_ERR(mvm, "flush request fail\n");
3338                 mutex_unlock(&mvm->mutex);
3339         } else {
3340                 mutex_unlock(&mvm->mutex);
3341
3342                 /* this can take a while, and we may need/want other operations
3343                  * to succeed while doing this, so do it without the mutex held
3344                  */
3345                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3346         }
3347 }
3348
3349 const struct ieee80211_ops iwl_mvm_hw_ops = {
3350         .tx = iwl_mvm_mac_tx,
3351         .ampdu_action = iwl_mvm_mac_ampdu_action,
3352         .start = iwl_mvm_mac_start,
3353         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
3354         .stop = iwl_mvm_mac_stop,
3355         .add_interface = iwl_mvm_mac_add_interface,
3356         .remove_interface = iwl_mvm_mac_remove_interface,
3357         .config = iwl_mvm_mac_config,
3358         .prepare_multicast = iwl_mvm_prepare_multicast,
3359         .configure_filter = iwl_mvm_configure_filter,
3360         .bss_info_changed = iwl_mvm_bss_info_changed,
3361         .hw_scan = iwl_mvm_mac_hw_scan,
3362         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
3363         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
3364         .sta_state = iwl_mvm_mac_sta_state,
3365         .sta_notify = iwl_mvm_mac_sta_notify,
3366         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3367         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
3368         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
3369         .sta_rc_update = iwl_mvm_sta_rc_update,
3370         .conf_tx = iwl_mvm_mac_conf_tx,
3371         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
3372         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
3373         .flush = iwl_mvm_mac_flush,
3374         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
3375         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
3376         .set_key = iwl_mvm_mac_set_key,
3377         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
3378         .remain_on_channel = iwl_mvm_roc,
3379         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
3380         .add_chanctx = iwl_mvm_add_chanctx,
3381         .remove_chanctx = iwl_mvm_remove_chanctx,
3382         .change_chanctx = iwl_mvm_change_chanctx,
3383         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
3384         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
3385         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
3386
3387         .start_ap = iwl_mvm_start_ap_ibss,
3388         .stop_ap = iwl_mvm_stop_ap_ibss,
3389         .join_ibss = iwl_mvm_start_ap_ibss,
3390         .leave_ibss = iwl_mvm_stop_ap_ibss,
3391
3392         .set_tim = iwl_mvm_set_tim,
3393
3394         .channel_switch = iwl_mvm_channel_switch,
3395         .pre_channel_switch = iwl_mvm_pre_channel_switch,
3396         .post_channel_switch = iwl_mvm_post_channel_switch,
3397
3398         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
3399         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
3400         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
3401
3402         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
3403
3404 #ifdef CONFIG_PM_SLEEP
3405         /* look at d3.c */
3406         .suspend = iwl_mvm_suspend,
3407         .resume = iwl_mvm_resume,
3408         .set_wakeup = iwl_mvm_set_wakeup,
3409         .set_rekey_data = iwl_mvm_set_rekey_data,
3410 #if IS_ENABLED(CONFIG_IPV6)
3411         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
3412 #endif
3413         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
3414 #endif
3415 };