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
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  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
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  20  * along with this program; if not, write to the Free Software
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  44  *    the documentation and/or other materials provided with the
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  48  *    from this software without specific prior written permission.
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  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <linux/if_arp.h>
  70 #include <net/mac80211.h>
  71 #include <net/ieee80211_radiotap.h>
  72 #include <net/tcp.h>
  73
  74 #include "iwl-op-mode.h"
  75 #include "iwl-io.h"
  76 #include "mvm.h"
  77 #include "sta.h"
  78 #include "time-event.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "fw-api-scan.h"
  81 #include "iwl-phy-db.h"
  82 #include "testmode.h"
  83
  84 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  85         {
  86                 .max = 1,
  87                 .types = BIT(NL80211_IFTYPE_STATION),
  88         },
  89         {
  90                 .max = 1,
  91                 .types = BIT(NL80211_IFTYPE_AP) |
  92                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  93                         BIT(NL80211_IFTYPE_P2P_GO),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  98         },
  99 };
 100
 101 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 102         {
 103                 .num_different_channels = 1,
 104                 .max_interfaces = 3,
 105                 .limits = iwl_mvm_limits,
 106                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 107         },
 108 };
 109
 110 #ifdef CONFIG_PM_SLEEP
 111 static const struct nl80211_wowlan_tcp_data_token_feature
 112 iwl_mvm_wowlan_tcp_token_feature = {
 113         .min_len = 0,
 114         .max_len = 255,
 115         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 116 };
 117
 118 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 119         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 120         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 121                             sizeof(struct ethhdr) -
 122                             sizeof(struct iphdr) -
 123                             sizeof(struct tcphdr),
 124         .data_interval_max = 65535, /* __le16 in API */
 125         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 126                             sizeof(struct ethhdr) -
 127                             sizeof(struct iphdr) -
 128                             sizeof(struct tcphdr),
 129         .seq = true,
 130 };
 131 #endif
 132
 133 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 134 /*
 135  * Use the reserved field to indicate magic values.
 136  * these values will only be used internally by the driver,
 137  * and won't make it to the fw (reserved will be 0).
 138  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 139  *      be the vif's ip address. in case there is not a single
 140  *      ip address (0, or more than 1), this attribute will
 141  *      be skipped.
 142  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 143  *      the LSB bytes of the vif's mac address
 144  */
 145 enum {
 146         BC_FILTER_MAGIC_NONE = 0,
 147         BC_FILTER_MAGIC_IP,
 148         BC_FILTER_MAGIC_MAC,
 149 };
 150
 151 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 152         {
 153                 /* arp */
 154                 .discard = 0,
 155                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 156                 .attrs = {
 157                         {
 158                                 /* frame type - arp, hw type - ethernet */
 159                                 .offset_type =
 160                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 161                                 .offset = sizeof(rfc1042_header),
 162                                 .val = cpu_to_be32(0x08060001),
 163                                 .mask = cpu_to_be32(0xffffffff),
 164                         },
 165                         {
 166                                 /* arp dest ip */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header) + 2 +
 170                                           sizeof(struct arphdr) +
 171                                           ETH_ALEN + sizeof(__be32) +
 172                                           ETH_ALEN,
 173                                 .mask = cpu_to_be32(0xffffffff),
 174                                 /* mark it as special field */
 175                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 176                         },
 177                 },
 178         },
 179         {
 180                 /* dhcp offer bcast */
 181                 .discard = 0,
 182                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 183                 .attrs = {
 184                         {
 185                                 /* udp dest port - 68 (bootp client)*/
 186                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 187                                 .offset = offsetof(struct udphdr, dest),
 188                                 .val = cpu_to_be32(0x00440000),
 189                                 .mask = cpu_to_be32(0xffff0000),
 190                         },
 191                         {
 192                                 /* dhcp - lsb bytes of client hw address */
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = 38,
 195                                 .mask = cpu_to_be32(0xffffffff),
 196                                 /* mark it as special field */
 197                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 198                         },
 199                 },
 200         },
 201         /* last filter must be empty */
 202         {},
 203 };
 204 #endif
 205
 206 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 207 {
 208         if (!iwl_mvm_is_d0i3_supported(mvm))
 209                 return;
 210
 211         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 212         WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
 213         iwl_trans_ref(mvm->trans);
 214 }
 215
 216 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 217 {
 218         if (!iwl_mvm_is_d0i3_supported(mvm))
 219                 return;
 220
 221         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 222         WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
 223         iwl_trans_unref(mvm->trans);
 224 }
 225
 226 static void
 227 iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
 228 {
 229         int i;
 230
 231         if (!iwl_mvm_is_d0i3_supported(mvm))
 232                 return;
 233
 234         for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
 235                 if (ref == i)
 236                         continue;
 237
 238                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
 239                 clear_bit(i, mvm->ref_bitmap);
 240                 iwl_trans_unref(mvm->trans);
 241         }
 242 }
 243
 244 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 245 {
 246         int i;
 247
 248         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 249         for (i = 0; i < NUM_PHY_CTX; i++) {
 250                 mvm->phy_ctxts[i].id = i;
 251                 mvm->phy_ctxts[i].ref = 0;
 252         }
 253 }
 254
 255 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 256 {
 257         /* we create the 802.11 header and SSID element */
 258         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
 259                 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
 260         return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 261 }
 262
 263 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 264 {
 265         struct ieee80211_hw *hw = mvm->hw;
 266         int num_mac, ret, i;
 267
 268         /* Tell mac80211 our characteristics */
 269         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 270                     IEEE80211_HW_SPECTRUM_MGMT |
 271                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 272                     IEEE80211_HW_QUEUE_CONTROL |
 273                     IEEE80211_HW_WANT_MONITOR_VIF |
 274                     IEEE80211_HW_SUPPORTS_PS |
 275                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 276                     IEEE80211_HW_AMPDU_AGGREGATION |
 277                     IEEE80211_HW_TIMING_BEACON_ONLY |
 278                     IEEE80211_HW_CONNECTION_MONITOR |
 279                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 280                     IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 281
 282         hw->queues = mvm->first_agg_queue;
 283         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 284         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 285                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 286         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
 287         hw->rate_control_algorithm = "iwl-mvm-rs";
 288
 289         /*
 290          * Enable 11w if advertised by firmware and software crypto
 291          * is not enabled (as the firmware will interpret some mgmt
 292          * packets, so enabling it with software crypto isn't safe)
 293          */
 294         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 295             !iwlwifi_mod_params.sw_crypto)
 296                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 297
 298         if (0 && mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
 299                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 300                 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 301                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 302         }
 303
 304         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 305         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 306         hw->chanctx_data_size = sizeof(u16);
 307
 308         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 309                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 310                 BIT(NL80211_IFTYPE_AP) |
 311                 BIT(NL80211_IFTYPE_P2P_GO) |
 312                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 313
 314         /* IBSS has bugs in older versions */
 315         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8)
 316                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
 317
 318         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 319         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 320                                        REGULATORY_DISABLE_BEACON_HINTS;
 321
 322         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 323                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 324
 325         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 326         hw->wiphy->n_iface_combinations =
 327                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 328
 329         hw->wiphy->max_remain_on_channel_duration = 10000;
 330         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 331
 332         /* Extract MAC address */
 333         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 334         hw->wiphy->addresses = mvm->addresses;
 335         hw->wiphy->n_addresses = 1;
 336
 337         /* Extract additional MAC addresses if available */
 338         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 339                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 340
 341         for (i = 1; i < num_mac; i++) {
 342                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 343                        ETH_ALEN);
 344                 mvm->addresses[i].addr[5]++;
 345                 hw->wiphy->n_addresses++;
 346         }
 347
 348         iwl_mvm_reset_phy_ctxts(mvm);
 349
 350         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 351
 352         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 353
 354         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 355                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 356                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 357         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 358                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 359                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 360
 361         hw->wiphy->hw_version = mvm->trans->hw_id;
 362
 363         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 364                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 365         else
 366                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 367
 368         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
 369                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 370                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 371                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 372                 /* we create the 802.11 header and zero length SSID IE. */
 373                 hw->wiphy->max_sched_scan_ie_len =
 374                                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 375         }
 376
 377         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 378                                NL80211_FEATURE_P2P_GO_OPPPS;
 379
 380         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 381
 382         /* currently FW API supports only one optional cipher scheme */
 383         if (mvm->fw->cs[0].cipher) {
 384                 mvm->hw->n_cipher_schemes = 1;
 385                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 386         }
 387
 388 #ifdef CONFIG_PM_SLEEP
 389         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 390             mvm->trans->ops->d3_suspend &&
 391             mvm->trans->ops->d3_resume &&
 392             device_can_wakeup(mvm->trans->dev)) {
 393                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 394                                     WIPHY_WOWLAN_DISCONNECT |
 395                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 396                                     WIPHY_WOWLAN_RFKILL_RELEASE;
 397                 if (!iwlwifi_mod_params.sw_crypto)
 398                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 399                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 400                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 401
 402                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 403                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 404                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 405                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 406                 hw->wiphy->wowlan = &mvm->wowlan;
 407         }
 408 #endif
 409
 410 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 411         /* assign default bcast filtering configuration */
 412         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 413 #endif
 414
 415         ret = iwl_mvm_leds_init(mvm);
 416         if (ret)
 417                 return ret;
 418
 419         ret = ieee80211_register_hw(mvm->hw);
 420         if (ret)
 421                 iwl_mvm_leds_exit(mvm);
 422
 423         return ret;
 424 }
 425
 426 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 427                              struct ieee80211_sta *sta,
 428                              struct sk_buff *skb)
 429 {
 430         struct iwl_mvm_sta *mvmsta;
 431         bool defer = false;
 432
 433         /*
 434          * double check the IN_D0I3 flag both before and after
 435          * taking the spinlock, in order to prevent taking
 436          * the spinlock when not needed.
 437          */
 438         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 439                 return false;
 440
 441         spin_lock(&mvm->d0i3_tx_lock);
 442         /*
 443          * testing the flag again ensures the skb dequeue
 444          * loop (on d0i3 exit) hasn't run yet.
 445          */
 446         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 447                 goto out;
 448
 449         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 450         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 451             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 452                 goto out;
 453
 454         __skb_queue_tail(&mvm->d0i3_tx, skb);
 455         ieee80211_stop_queues(mvm->hw);
 456
 457         /* trigger wakeup */
 458         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 459         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 460
 461         defer = true;
 462 out:
 463         spin_unlock(&mvm->d0i3_tx_lock);
 464         return defer;
 465 }
 466
 467 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 468                            struct ieee80211_tx_control *control,
 469                            struct sk_buff *skb)
 470 {
 471         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 472         struct ieee80211_sta *sta = control->sta;
 473         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 474         struct ieee80211_hdr *hdr = (void *)skb->data;
 475
 476         if (iwl_mvm_is_radio_killed(mvm)) {
 477                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 478                 goto drop;
 479         }
 480
 481         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 482             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 483                 goto drop;
 484
 485         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 486         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 487                      ieee80211_is_mgmt(hdr->frame_control) &&
 488                      !ieee80211_is_deauth(hdr->frame_control) &&
 489                      !ieee80211_is_disassoc(hdr->frame_control) &&
 490                      !ieee80211_is_action(hdr->frame_control)))
 491                 sta = NULL;
 492
 493         if (sta) {
 494                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 495                         return;
 496                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 497                         goto drop;
 498                 return;
 499         }
 500
 501         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 502                 goto drop;
 503         return;
 504  drop:
 505         ieee80211_free_txskb(hw, skb);
 506 }
 507
 508 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 509 {
 510         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 511                 return false;
 512         return true;
 513 }
 514
 515 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 516 {
 517         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 518                 return false;
 519         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 520                 return true;
 521
 522         /* enabled by default */
 523         return true;
 524 }
 525
 526 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 527                                     struct ieee80211_vif *vif,
 528                                     enum ieee80211_ampdu_mlme_action action,
 529                                     struct ieee80211_sta *sta, u16 tid,
 530                                     u16 *ssn, u8 buf_size)
 531 {
 532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 533         int ret;
 534         bool tx_agg_ref = false;
 535
 536         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 537                      sta->addr, tid, action);
 538
 539         if (!(mvm->nvm_data->sku_cap_11n_enable))
 540                 return -EACCES;
 541
 542         /* return from D0i3 before starting a new Tx aggregation */
 543         if (action == IEEE80211_AMPDU_TX_START) {
 544                 iwl_mvm_ref(mvm, IWL_MVM_REF_TX_AGG);
 545                 tx_agg_ref = true;
 546
 547                 /*
 548                  * wait synchronously until D0i3 exit to get the correct
 549                  * sequence number for the tid
 550                  */
 551                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 552                           !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ)) {
 553                         WARN_ON_ONCE(1);
 554                         iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 555                         return -EIO;
 556                 }
 557         }
 558
 559         mutex_lock(&mvm->mutex);
 560
 561         switch (action) {
 562         case IEEE80211_AMPDU_RX_START:
 563                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 564                         ret = -EINVAL;
 565                         break;
 566                 }
 567                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 568                 break;
 569         case IEEE80211_AMPDU_RX_STOP:
 570                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 571                 break;
 572         case IEEE80211_AMPDU_TX_START:
 573                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 574                         ret = -EINVAL;
 575                         break;
 576                 }
 577                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 578                 break;
 579         case IEEE80211_AMPDU_TX_STOP_CONT:
 580                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 581                 break;
 582         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 583         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 584                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 585                 break;
 586         case IEEE80211_AMPDU_TX_OPERATIONAL:
 587                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 588                 break;
 589         default:
 590                 WARN_ON_ONCE(1);
 591                 ret = -EINVAL;
 592                 break;
 593         }
 594         mutex_unlock(&mvm->mutex);
 595
 596         /*
 597          * If the tid is marked as started, we won't use it for offloaded
 598          * traffic on the next D0i3 entry. It's safe to unref.
 599          */
 600         if (tx_agg_ref)
 601                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 602
 603         return ret;
 604 }
 605
 606 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 607                                      struct ieee80211_vif *vif)
 608 {
 609         struct iwl_mvm *mvm = data;
 610         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 611
 612         mvmvif->uploaded = false;
 613         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 614
 615         /* does this make sense at all? */
 616         mvmvif->color++;
 617
 618         spin_lock_bh(&mvm->time_event_lock);
 619         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 620         spin_unlock_bh(&mvm->time_event_lock);
 621
 622         mvmvif->phy_ctxt = NULL;
 623 }
 624
 625 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 626 {
 627 #ifdef CONFIG_IWLWIFI_DEBUGFS
 628         static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
 629
 630         iwl_mvm_fw_error_dump(mvm);
 631
 632         /* notify the userspace about the error we had */
 633         kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
 634 #endif
 635
 636         iwl_trans_stop_device(mvm->trans);
 637
 638         mvm->scan_status = IWL_MVM_SCAN_NONE;
 639
 640         /* just in case one was running */
 641         ieee80211_remain_on_channel_expired(mvm->hw);
 642
 643         ieee80211_iterate_active_interfaces_atomic(
 644                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 645                 iwl_mvm_cleanup_iterator, mvm);
 646
 647         mvm->p2p_device_vif = NULL;
 648         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 649
 650         iwl_mvm_reset_phy_ctxts(mvm);
 651         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 652         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 653
 654         ieee80211_wake_queues(mvm->hw);
 655
 656         /* cleanup all stale references (scan, roc), but keep the
 657          * ucode_down ref until reconfig is complete */
 658         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 659
 660         mvm->vif_count = 0;
 661         mvm->rx_ba_sessions = 0;
 662 }
 663
 664 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 665 {
 666         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 667         int ret;
 668
 669         mutex_lock(&mvm->mutex);
 670
 671         /* Clean up some internal and mac80211 state on restart */
 672         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 673                 iwl_mvm_restart_cleanup(mvm);
 674
 675         ret = iwl_mvm_up(mvm);
 676         mutex_unlock(&mvm->mutex);
 677
 678         return ret;
 679 }
 680
 681 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 682 {
 683         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 684         int ret;
 685
 686         mutex_lock(&mvm->mutex);
 687
 688         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 689         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 690         ret = iwl_mvm_update_quotas(mvm, NULL);
 691         if (ret)
 692                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 693                         ret);
 694
 695         /* allow transport/FW low power modes */
 696         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 697
 698         mutex_unlock(&mvm->mutex);
 699 }
 700
 701 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 702 {
 703         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 704
 705         flush_work(&mvm->d0i3_exit_work);
 706         flush_work(&mvm->async_handlers_wk);
 707
 708         mutex_lock(&mvm->mutex);
 709
 710         /* disallow low power states when the FW is down */
 711         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
 712
 713         /* async_handlers_wk is now blocked */
 714
 715         /*
 716          * The work item could be running or queued if the
 717          * ROC time event stops just as we get here.
 718          */
 719         cancel_work_sync(&mvm->roc_done_wk);
 720
 721         iwl_trans_stop_device(mvm->trans);
 722
 723         iwl_mvm_async_handlers_purge(mvm);
 724         /* async_handlers_list is empty and will stay empty: HW is stopped */
 725
 726         /* the fw is stopped, the aux sta is dead: clean up driver state */
 727         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 728
 729         mutex_unlock(&mvm->mutex);
 730
 731         /*
 732          * The worker might have been waiting for the mutex, let it run and
 733          * discover that its list is now empty.
 734          */
 735         cancel_work_sync(&mvm->async_handlers_wk);
 736 }
 737
 738 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
 739 {
 740         u16 i;
 741
 742         lockdep_assert_held(&mvm->mutex);
 743
 744         for (i = 0; i < NUM_PHY_CTX; i++)
 745                 if (!mvm->phy_ctxts[i].ref)
 746                         return &mvm->phy_ctxts[i];
 747
 748         IWL_ERR(mvm, "No available PHY context\n");
 749         return NULL;
 750 }
 751
 752 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 753                                 s8 tx_power)
 754 {
 755         /* FW is in charge of regulatory enforcement */
 756         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
 757                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
 758                 .pwr_restriction = cpu_to_le16(tx_power),
 759         };
 760
 761         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
 762                                     sizeof(reduce_txpwr_cmd),
 763                                     &reduce_txpwr_cmd);
 764 }
 765
 766 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 767                                      struct ieee80211_vif *vif)
 768 {
 769         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 770         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 771         int ret;
 772
 773         /*
 774          * Not much to do here. The stack will not allow interface
 775          * types or combinations that we didn't advertise, so we
 776          * don't really have to check the types.
 777          */
 778
 779         mutex_lock(&mvm->mutex);
 780
 781         /* Allocate resources for the MAC context, and add it to the fw  */
 782         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 783         if (ret)
 784                 goto out_unlock;
 785
 786         /* Counting number of interfaces is needed for legacy PM */
 787         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 788                 mvm->vif_count++;
 789
 790         /*
 791          * The AP binding flow can be done only after the beacon
 792          * template is configured (which happens only in the mac80211
 793          * start_ap() flow), and adding the broadcast station can happen
 794          * only after the binding.
 795          * In addition, since modifying the MAC before adding a bcast
 796          * station is not allowed by the FW, delay the adding of MAC context to
 797          * the point where we can also add the bcast station.
 798          * In short: there's not much we can do at this point, other than
 799          * allocating resources :)
 800          */
 801         if (vif->type == NL80211_IFTYPE_AP ||
 802             vif->type == NL80211_IFTYPE_ADHOC) {
 803                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 804                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 805                                                qmask,
 806                                                ieee80211_vif_type_p2p(vif));
 807                 if (ret) {
 808                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 809                         goto out_release;
 810                 }
 811
 812                 iwl_mvm_vif_dbgfs_register(mvm, vif);
 813                 goto out_unlock;
 814         }
 815
 816         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 817         if (ret)
 818                 goto out_release;
 819
 820         ret = iwl_mvm_power_update_mac(mvm, vif);
 821         if (ret)
 822                 goto out_release;
 823
 824         /* beacon filtering */
 825         ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
 826         if (ret)
 827                 goto out_remove_mac;
 828
 829         if (!mvm->bf_allowed_vif &&
 830             vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
 831             mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED){
 832                 mvm->bf_allowed_vif = mvmvif;
 833                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 834                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 835         }
 836
 837         /*
 838          * P2P_DEVICE interface does not have a channel context assigned to it,
 839          * so a dedicated PHY context is allocated to it and the corresponding
 840          * MAC context is bound to it at this stage.
 841          */
 842         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 843
 844                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
 845                 if (!mvmvif->phy_ctxt) {
 846                         ret = -ENOSPC;
 847                         goto out_free_bf;
 848                 }
 849
 850                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
 851                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 852                 if (ret)
 853                         goto out_unref_phy;
 854
 855                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 856                 if (ret)
 857                         goto out_unbind;
 858
 859                 /* Save a pointer to p2p device vif, so it can later be used to
 860                  * update the p2p device MAC when a GO is started/stopped */
 861                 mvm->p2p_device_vif = vif;
 862         }
 863
 864         iwl_mvm_vif_dbgfs_register(mvm, vif);
 865         goto out_unlock;
 866
 867  out_unbind:
 868         iwl_mvm_binding_remove_vif(mvm, vif);
 869  out_unref_phy:
 870         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 871  out_free_bf:
 872         if (mvm->bf_allowed_vif == mvmvif) {
 873                 mvm->bf_allowed_vif = NULL;
 874                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 875                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 876         }
 877  out_remove_mac:
 878         mvmvif->phy_ctxt = NULL;
 879         iwl_mvm_mac_ctxt_remove(mvm, vif);
 880  out_release:
 881         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 882                 mvm->vif_count--;
 883
 884         iwl_mvm_mac_ctxt_release(mvm, vif);
 885  out_unlock:
 886         mutex_unlock(&mvm->mutex);
 887
 888         return ret;
 889 }
 890
 891 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 892                                         struct ieee80211_vif *vif)
 893 {
 894         u32 tfd_msk = 0, ac;
 895
 896         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 897                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 898                         tfd_msk |= BIT(vif->hw_queue[ac]);
 899
 900         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 901                 tfd_msk |= BIT(vif->cab_queue);
 902
 903         if (tfd_msk) {
 904                 mutex_lock(&mvm->mutex);
 905                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 906                 mutex_unlock(&mvm->mutex);
 907         }
 908
 909         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 910                 /*
 911                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 912                  * We assume here that all the packets sent to the OFFCHANNEL
 913                  * queue are sent in ROC session.
 914                  */
 915                 flush_work(&mvm->roc_done_wk);
 916         } else {
 917                 /*
 918                  * By now, all the AC queues are empty. The AGG queues are
 919                  * empty too. We already got all the Tx responses for all the
 920                  * packets in the queues. The drain work can have been
 921                  * triggered. Flush it.
 922                  */
 923                 flush_work(&mvm->sta_drained_wk);
 924         }
 925 }
 926
 927 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 928                                          struct ieee80211_vif *vif)
 929 {
 930         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 931         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 932
 933         iwl_mvm_prepare_mac_removal(mvm, vif);
 934
 935         mutex_lock(&mvm->mutex);
 936
 937         if (mvm->bf_allowed_vif == mvmvif) {
 938                 mvm->bf_allowed_vif = NULL;
 939                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 940                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 941         }
 942
 943         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 944
 945         /*
 946          * For AP/GO interface, the tear down of the resources allocated to the
 947          * interface is be handled as part of the stop_ap flow.
 948          */
 949         if (vif->type == NL80211_IFTYPE_AP ||
 950             vif->type == NL80211_IFTYPE_ADHOC) {
 951 #ifdef CONFIG_NL80211_TESTMODE
 952                 if (vif == mvm->noa_vif) {
 953                         mvm->noa_vif = NULL;
 954                         mvm->noa_duration = 0;
 955                 }
 956 #endif
 957                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 958                 goto out_release;
 959         }
 960
 961         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 962                 mvm->p2p_device_vif = NULL;
 963                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 964                 iwl_mvm_binding_remove_vif(mvm, vif);
 965                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 966                 mvmvif->phy_ctxt = NULL;
 967         }
 968
 969         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 970                 mvm->vif_count--;
 971
 972         iwl_mvm_power_update_mac(mvm, vif);
 973         iwl_mvm_mac_ctxt_remove(mvm, vif);
 974
 975 out_release:
 976         iwl_mvm_mac_ctxt_release(mvm, vif);
 977         mutex_unlock(&mvm->mutex);
 978 }
 979
 980 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 981 {
 982         return 0;
 983 }
 984
 985 struct iwl_mvm_mc_iter_data {
 986         struct iwl_mvm *mvm;
 987         int port_id;
 988 };
 989
 990 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
 991                                       struct ieee80211_vif *vif)
 992 {
 993         struct iwl_mvm_mc_iter_data *data = _data;
 994         struct iwl_mvm *mvm = data->mvm;
 995         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
 996         int ret, len;
 997
 998         /* if we don't have free ports, mcast frames will be dropped */
 999         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1000                 return;
1001
1002         if (vif->type != NL80211_IFTYPE_STATION ||
1003             !vif->bss_conf.assoc)
1004                 return;
1005
1006         cmd->port_id = data->port_id++;
1007         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1008         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1009
1010         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
1011         if (ret)
1012                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1013 }
1014
1015 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1016 {
1017         struct iwl_mvm_mc_iter_data iter_data = {
1018                 .mvm = mvm,
1019         };
1020
1021         lockdep_assert_held(&mvm->mutex);
1022
1023         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1024                 return;
1025
1026         ieee80211_iterate_active_interfaces(
1027                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1028                 iwl_mvm_mc_iface_iterator, &iter_data);
1029 }
1030
1031 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1032                                      struct netdev_hw_addr_list *mc_list)
1033 {
1034         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1035         struct iwl_mcast_filter_cmd *cmd;
1036         struct netdev_hw_addr *addr;
1037         int addr_count = netdev_hw_addr_list_count(mc_list);
1038         bool pass_all = false;
1039         int len;
1040
1041         if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1042                 pass_all = true;
1043                 addr_count = 0;
1044         }
1045
1046         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1047         cmd = kzalloc(len, GFP_ATOMIC);
1048         if (!cmd)
1049                 return 0;
1050
1051         if (pass_all) {
1052                 cmd->pass_all = 1;
1053                 return (u64)(unsigned long)cmd;
1054         }
1055
1056         netdev_hw_addr_list_for_each(addr, mc_list) {
1057                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1058                                    cmd->count, addr->addr);
1059                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1060                        addr->addr, ETH_ALEN);
1061                 cmd->count++;
1062         }
1063
1064         return (u64)(unsigned long)cmd;
1065 }
1066
1067 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1068                                      unsigned int changed_flags,
1069                                      unsigned int *total_flags,
1070                                      u64 multicast)
1071 {
1072         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1073         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1074
1075         mutex_lock(&mvm->mutex);
1076
1077         /* replace previous configuration */
1078         kfree(mvm->mcast_filter_cmd);
1079         mvm->mcast_filter_cmd = cmd;
1080
1081         if (!cmd)
1082                 goto out;
1083
1084         iwl_mvm_recalc_multicast(mvm);
1085 out:
1086         mutex_unlock(&mvm->mutex);
1087         *total_flags = 0;
1088 }
1089
1090 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1091 struct iwl_bcast_iter_data {
1092         struct iwl_mvm *mvm;
1093         struct iwl_bcast_filter_cmd *cmd;
1094         u8 current_filter;
1095 };
1096
1097 static void
1098 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1099                          const struct iwl_fw_bcast_filter *in_filter,
1100                          struct iwl_fw_bcast_filter *out_filter)
1101 {
1102         struct iwl_fw_bcast_filter_attr *attr;
1103         int i;
1104
1105         memcpy(out_filter, in_filter, sizeof(*out_filter));
1106
1107         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1108                 attr = &out_filter->attrs[i];
1109
1110                 if (!attr->mask)
1111                         break;
1112
1113                 switch (attr->reserved1) {
1114                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1115                         if (vif->bss_conf.arp_addr_cnt != 1) {
1116                                 attr->mask = 0;
1117                                 continue;
1118                         }
1119
1120                         attr->val = vif->bss_conf.arp_addr_list[0];
1121                         break;
1122                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1123                         attr->val = *(__be32 *)&vif->addr[2];
1124                         break;
1125                 default:
1126                         break;
1127                 }
1128                 attr->reserved1 = 0;
1129                 out_filter->num_attrs++;
1130         }
1131 }
1132
1133 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1134                                           struct ieee80211_vif *vif)
1135 {
1136         struct iwl_bcast_iter_data *data = _data;
1137         struct iwl_mvm *mvm = data->mvm;
1138         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1139         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1140         struct iwl_fw_bcast_mac *bcast_mac;
1141         int i;
1142
1143         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1144                 return;
1145
1146         bcast_mac = &cmd->macs[mvmvif->id];
1147
1148         /* enable filtering only for associated stations */
1149         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1150                 return;
1151
1152         bcast_mac->default_discard = 1;
1153
1154         /* copy all configured filters */
1155         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1156                 /*
1157                  * Make sure we don't exceed our filters limit.
1158                  * if there is still a valid filter to be configured,
1159                  * be on the safe side and just allow bcast for this mac.
1160                  */
1161                 if (WARN_ON_ONCE(data->current_filter >=
1162                                  ARRAY_SIZE(cmd->filters))) {
1163                         bcast_mac->default_discard = 0;
1164                         bcast_mac->attached_filters = 0;
1165                         break;
1166                 }
1167
1168                 iwl_mvm_set_bcast_filter(vif,
1169                                          &mvm->bcast_filters[i],
1170                                          &cmd->filters[data->current_filter]);
1171
1172                 /* skip current filter if it contains no attributes */
1173                 if (!cmd->filters[data->current_filter].num_attrs)
1174                         continue;
1175
1176                 /* attach the filter to current mac */
1177                 bcast_mac->attached_filters |=
1178                                 cpu_to_le16(BIT(data->current_filter));
1179
1180                 data->current_filter++;
1181         }
1182 }
1183
1184 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1185                                     struct iwl_bcast_filter_cmd *cmd)
1186 {
1187         struct iwl_bcast_iter_data iter_data = {
1188                 .mvm = mvm,
1189                 .cmd = cmd,
1190         };
1191
1192         memset(cmd, 0, sizeof(*cmd));
1193         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1194         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1195
1196 #ifdef CONFIG_IWLWIFI_DEBUGFS
1197         /* use debugfs filters/macs if override is configured */
1198         if (mvm->dbgfs_bcast_filtering.override) {
1199                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1200                        sizeof(cmd->filters));
1201                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1202                        sizeof(cmd->macs));
1203                 return true;
1204         }
1205 #endif
1206
1207         /* if no filters are configured, do nothing */
1208         if (!mvm->bcast_filters)
1209                 return false;
1210
1211         /* configure and attach these filters for each associated sta vif */
1212         ieee80211_iterate_active_interfaces(
1213                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1214                 iwl_mvm_bcast_filter_iterator, &iter_data);
1215
1216         return true;
1217 }
1218 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1219                                           struct ieee80211_vif *vif)
1220 {
1221         struct iwl_bcast_filter_cmd cmd;
1222
1223         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1224                 return 0;
1225
1226         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1227                 return 0;
1228
1229         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, CMD_SYNC,
1230                                     sizeof(cmd), &cmd);
1231 }
1232 #else
1233 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1234                                                  struct ieee80211_vif *vif)
1235 {
1236         return 0;
1237 }
1238 #endif
1239
1240 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1241                                              struct ieee80211_vif *vif,
1242                                              struct ieee80211_bss_conf *bss_conf,
1243                                              u32 changes)
1244 {
1245         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1246         int ret;
1247
1248         /*
1249          * Re-calculate the tsf id, as the master-slave relations depend on the
1250          * beacon interval, which was not known when the station interface was
1251          * added.
1252          */
1253         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1254                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1255
1256         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1257         if (ret)
1258                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1259
1260         if (changes & BSS_CHANGED_ASSOC) {
1261                 if (bss_conf->assoc) {
1262                         /* add quota for this interface */
1263                         ret = iwl_mvm_update_quotas(mvm, vif);
1264                         if (ret) {
1265                                 IWL_ERR(mvm, "failed to update quotas\n");
1266                                 return;
1267                         }
1268
1269                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1270                                      &mvm->status)) {
1271                                 /*
1272                                  * If we're restarting then the firmware will
1273                                  * obviously have lost synchronisation with
1274                                  * the AP. It will attempt to synchronise by
1275                                  * itself, but we can make it more reliable by
1276                                  * scheduling a session protection time event.
1277                                  *
1278                                  * The firmware needs to receive a beacon to
1279                                  * catch up with synchronisation, use 110% of
1280                                  * the beacon interval.
1281                                  *
1282                                  * Set a large maximum delay to allow for more
1283                                  * than a single interface.
1284                                  */
1285                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1286                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1287                                                         5 * dur);
1288                         }
1289
1290                         iwl_mvm_sf_update(mvm, vif, false);
1291                         iwl_mvm_power_vif_assoc(mvm, vif);
1292                         if (vif->p2p)
1293                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1294                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1295                         /*
1296                          * If update fails - SF might be running in associated
1297                          * mode while disassociated - which is forbidden.
1298                          */
1299                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1300                                   "Failed to update SF upon disassociation\n");
1301
1302                         /* remove AP station now that the MAC is unassoc */
1303                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1304                         if (ret)
1305                                 IWL_ERR(mvm, "failed to remove AP station\n");
1306
1307                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1308                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1309                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1310                         /* remove quota for this interface */
1311                         ret = iwl_mvm_update_quotas(mvm, NULL);
1312                         if (ret)
1313                                 IWL_ERR(mvm, "failed to update quotas\n");
1314
1315                         if (vif->p2p)
1316                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1317                 }
1318
1319                 iwl_mvm_recalc_multicast(mvm);
1320                 iwl_mvm_configure_bcast_filter(mvm, vif);
1321
1322                 /* reset rssi values */
1323                 mvmvif->bf_data.ave_beacon_signal = 0;
1324
1325                 iwl_mvm_bt_coex_vif_change(mvm);
1326                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1327                                     IEEE80211_SMPS_AUTOMATIC);
1328         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1329                 /*
1330                  * We received a beacon _after_ association so
1331                  * remove the session protection.
1332                  */
1333                 iwl_mvm_remove_time_event(mvm, mvmvif,
1334                                           &mvmvif->time_event_data);
1335                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC));
1336         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1337                               BSS_CHANGED_QOS)) {
1338                 ret = iwl_mvm_power_update_mac(mvm, vif);
1339                 if (ret)
1340                         IWL_ERR(mvm, "failed to update power mode\n");
1341         }
1342         if (changes & BSS_CHANGED_TXPOWER) {
1343                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1344                                 bss_conf->txpower);
1345                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1346         }
1347
1348         if (changes & BSS_CHANGED_CQM) {
1349                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
1350                 /* reset cqm events tracking */
1351                 mvmvif->bf_data.last_cqm_event = 0;
1352                 ret = iwl_mvm_update_beacon_filter(mvm, vif, false, CMD_SYNC);
1353                 if (ret)
1354                         IWL_ERR(mvm, "failed to update CQM thresholds\n");
1355         }
1356
1357         if (changes & BSS_CHANGED_ARP_FILTER) {
1358                 IWL_DEBUG_MAC80211(mvm, "arp filter changed");
1359                 iwl_mvm_configure_bcast_filter(mvm, vif);
1360         }
1361 }
1362
1363 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1364                                  struct ieee80211_vif *vif)
1365 {
1366         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1367         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1368         int ret;
1369
1370         mutex_lock(&mvm->mutex);
1371
1372         /* Send the beacon template */
1373         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1374         if (ret)
1375                 goto out_unlock;
1376
1377         /*
1378          * Re-calculate the tsf id, as the master-slave relations depend on the
1379          * beacon interval, which was not known when the AP interface was added.
1380          */
1381         if (vif->type == NL80211_IFTYPE_AP)
1382                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1383
1384         /* Add the mac context */
1385         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1386         if (ret)
1387                 goto out_unlock;
1388
1389         /* Perform the binding */
1390         ret = iwl_mvm_binding_add_vif(mvm, vif);
1391         if (ret)
1392                 goto out_remove;
1393
1394         /* Send the bcast station. At this stage the TBTT and DTIM time events
1395          * are added and applied to the scheduler */
1396         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1397         if (ret)
1398                 goto out_unbind;
1399
1400         /* must be set before quota calculations */
1401         mvmvif->ap_ibss_active = true;
1402
1403         /* power updated needs to be done before quotas */
1404         iwl_mvm_power_update_mac(mvm, vif);
1405
1406         ret = iwl_mvm_update_quotas(mvm, vif);
1407         if (ret)
1408                 goto out_quota_failed;
1409
1410         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1411         if (vif->p2p && mvm->p2p_device_vif)
1412                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1413
1414         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1415
1416         iwl_mvm_bt_coex_vif_change(mvm);
1417
1418         mutex_unlock(&mvm->mutex);
1419         return 0;
1420
1421 out_quota_failed:
1422         iwl_mvm_power_update_mac(mvm, vif);
1423         mvmvif->ap_ibss_active = false;
1424         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1425 out_unbind:
1426         iwl_mvm_binding_remove_vif(mvm, vif);
1427 out_remove:
1428         iwl_mvm_mac_ctxt_remove(mvm, vif);
1429 out_unlock:
1430         mutex_unlock(&mvm->mutex);
1431         return ret;
1432 }
1433
1434 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1435                                  struct ieee80211_vif *vif)
1436 {
1437         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1438         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1439
1440         iwl_mvm_prepare_mac_removal(mvm, vif);
1441
1442         mutex_lock(&mvm->mutex);
1443
1444         mvmvif->ap_ibss_active = false;
1445
1446         iwl_mvm_bt_coex_vif_change(mvm);
1447
1448         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1449
1450         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1451         if (vif->p2p && mvm->p2p_device_vif)
1452                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1453
1454         iwl_mvm_update_quotas(mvm, NULL);
1455         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1456         iwl_mvm_binding_remove_vif(mvm, vif);
1457
1458         iwl_mvm_power_update_mac(mvm, vif);
1459
1460         iwl_mvm_mac_ctxt_remove(mvm, vif);
1461
1462         mutex_unlock(&mvm->mutex);
1463 }
1464
1465 static void
1466 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1467                                  struct ieee80211_vif *vif,
1468                                  struct ieee80211_bss_conf *bss_conf,
1469                                  u32 changes)
1470 {
1471         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1472
1473         /* Changes will be applied when the AP/IBSS is started */
1474         if (!mvmvif->ap_ibss_active)
1475                 return;
1476
1477         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1478                        BSS_CHANGED_BANDWIDTH) &&
1479             iwl_mvm_mac_ctxt_changed(mvm, vif))
1480                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1481
1482         /* Need to send a new beacon template to the FW */
1483         if (changes & BSS_CHANGED_BEACON &&
1484             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1485                 IWL_WARN(mvm, "Failed updating beacon data\n");
1486 }
1487
1488 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1489                                      struct ieee80211_vif *vif,
1490                                      struct ieee80211_bss_conf *bss_conf,
1491                                      u32 changes)
1492 {
1493         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1494
1495         mutex_lock(&mvm->mutex);
1496
1497         switch (vif->type) {
1498         case NL80211_IFTYPE_STATION:
1499                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1500                 break;
1501         case NL80211_IFTYPE_AP:
1502         case NL80211_IFTYPE_ADHOC:
1503                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1504                 break;
1505         default:
1506                 /* shouldn't happen */
1507                 WARN_ON_ONCE(1);
1508         }
1509
1510         mutex_unlock(&mvm->mutex);
1511 }
1512
1513 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1514                                struct ieee80211_vif *vif,
1515                                struct cfg80211_scan_request *req)
1516 {
1517         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1518         int ret;
1519
1520         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1521                 return -EINVAL;
1522
1523         mutex_lock(&mvm->mutex);
1524
1525         switch (mvm->scan_status) {
1526         case IWL_MVM_SCAN_SCHED:
1527                 ret = iwl_mvm_sched_scan_stop(mvm);
1528                 if (ret) {
1529                         ret = -EBUSY;
1530                         goto out;
1531                 }
1532                 break;
1533         case IWL_MVM_SCAN_NONE:
1534                 break;
1535         default:
1536                 ret = -EBUSY;
1537                 goto out;
1538         }
1539
1540         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1541
1542         ret = iwl_mvm_scan_request(mvm, vif, req);
1543         if (ret)
1544                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1545 out:
1546         mutex_unlock(&mvm->mutex);
1547         /* make sure to flush the Rx handler before the next scan arrives */
1548         iwl_mvm_wait_for_async_handlers(mvm);
1549         return ret;
1550 }
1551
1552 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1553                                        struct ieee80211_vif *vif)
1554 {
1555         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1556
1557         mutex_lock(&mvm->mutex);
1558
1559         iwl_mvm_cancel_scan(mvm);
1560
1561         mutex_unlock(&mvm->mutex);
1562 }
1563
1564 static void
1565 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1566                                   struct ieee80211_sta *sta, u16 tids,
1567                                   int num_frames,
1568                                   enum ieee80211_frame_release_type reason,
1569                                   bool more_data)
1570 {
1571         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1572
1573         /* Called when we need to transmit (a) frame(s) from mac80211 */
1574
1575         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1576                                           tids, more_data, false);
1577 }
1578
1579 static void
1580 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1581                                     struct ieee80211_sta *sta, u16 tids,
1582                                     int num_frames,
1583                                     enum ieee80211_frame_release_type reason,
1584                                     bool more_data)
1585 {
1586         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1587
1588         /* Called when we need to transmit (a) frame(s) from agg queue */
1589
1590         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1591                                           tids, more_data, true);
1592 }
1593
1594 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1595                                    struct ieee80211_vif *vif,
1596                                    enum sta_notify_cmd cmd,
1597                                    struct ieee80211_sta *sta)
1598 {
1599         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1600         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1601         int tid;
1602
1603         switch (cmd) {
1604         case STA_NOTIFY_SLEEP:
1605                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1606                         ieee80211_sta_block_awake(hw, sta, true);
1607                 spin_lock_bh(&mvmsta->lock);
1608                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1609                         struct iwl_mvm_tid_data *tid_data;
1610
1611                         tid_data = &mvmsta->tid_data[tid];
1612                         if (tid_data->state != IWL_AGG_ON &&
1613                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1614                                 continue;
1615                         if (iwl_mvm_tid_queued(tid_data) == 0)
1616                                 continue;
1617                         ieee80211_sta_set_buffered(sta, tid, true);
1618                 }
1619                 spin_unlock_bh(&mvmsta->lock);
1620                 /*
1621                  * The fw updates the STA to be asleep. Tx packets on the Tx
1622                  * queues to this station will not be transmitted. The fw will
1623                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1624                  */
1625                 break;
1626         case STA_NOTIFY_AWAKE:
1627                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1628                         break;
1629                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1630                 break;
1631         default:
1632                 break;
1633         }
1634 }
1635
1636 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1637                                        struct ieee80211_vif *vif,
1638                                        struct ieee80211_sta *sta)
1639 {
1640         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1641         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1642
1643         /*
1644          * This is called before mac80211 does RCU synchronisation,
1645          * so here we already invalidate our internal RCU-protected
1646          * station pointer. The rest of the code will thus no longer
1647          * be able to find the station this way, and we don't rely
1648          * on further RCU synchronisation after the sta_state()
1649          * callback deleted the station.
1650          */
1651         mutex_lock(&mvm->mutex);
1652         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1653                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1654                                    ERR_PTR(-ENOENT));
1655         mutex_unlock(&mvm->mutex);
1656 }
1657
1658 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1659                                  struct ieee80211_vif *vif,
1660                                  struct ieee80211_sta *sta,
1661                                  enum ieee80211_sta_state old_state,
1662                                  enum ieee80211_sta_state new_state)
1663 {
1664         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1665         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1666         int ret;
1667
1668         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1669                            sta->addr, old_state, new_state);
1670
1671         /* this would be a mac80211 bug ... but don't crash */
1672         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1673                 return -EINVAL;
1674
1675         /* if a STA is being removed, reuse its ID */
1676         flush_work(&mvm->sta_drained_wk);
1677
1678         mutex_lock(&mvm->mutex);
1679         if (old_state == IEEE80211_STA_NOTEXIST &&
1680             new_state == IEEE80211_STA_NONE) {
1681                 /*
1682                  * Firmware bug - it'll crash if the beacon interval is less
1683                  * than 16. We can't avoid connecting at all, so refuse the
1684                  * station state change, this will cause mac80211 to abandon
1685                  * attempts to connect to this AP, and eventually wpa_s will
1686                  * blacklist the AP...
1687                  */
1688                 if (vif->type == NL80211_IFTYPE_STATION &&
1689                     vif->bss_conf.beacon_int < 16) {
1690                         IWL_ERR(mvm,
1691                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1692                                 sta->addr, vif->bss_conf.beacon_int);
1693                         ret = -EINVAL;
1694                         goto out_unlock;
1695                 }
1696                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1697         } else if (old_state == IEEE80211_STA_NONE &&
1698                    new_state == IEEE80211_STA_AUTH) {
1699                 ret = 0;
1700         } else if (old_state == IEEE80211_STA_AUTH &&
1701                    new_state == IEEE80211_STA_ASSOC) {
1702                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1703                 if (ret == 0)
1704                         iwl_mvm_rs_rate_init(mvm, sta,
1705                                              mvmvif->phy_ctxt->channel->band,
1706                                              true);
1707         } else if (old_state == IEEE80211_STA_ASSOC &&
1708                    new_state == IEEE80211_STA_AUTHORIZED) {
1709                 /* enable beacon filtering */
1710                 if (vif->bss_conf.dtim_period)
1711                         WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif,
1712                                                              CMD_SYNC));
1713                 ret = 0;
1714         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1715                    new_state == IEEE80211_STA_ASSOC) {
1716                 /* disable beacon filtering */
1717                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC));
1718                 ret = 0;
1719         } else if (old_state == IEEE80211_STA_ASSOC &&
1720                    new_state == IEEE80211_STA_AUTH) {
1721                 ret = 0;
1722         } else if (old_state == IEEE80211_STA_AUTH &&
1723                    new_state == IEEE80211_STA_NONE) {
1724                 ret = 0;
1725         } else if (old_state == IEEE80211_STA_NONE &&
1726                    new_state == IEEE80211_STA_NOTEXIST) {
1727                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1728         } else {
1729                 ret = -EIO;
1730         }
1731  out_unlock:
1732         mutex_unlock(&mvm->mutex);
1733
1734         return ret;
1735 }
1736
1737 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1738 {
1739         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1740
1741         mvm->rts_threshold = value;
1742
1743         return 0;
1744 }
1745
1746 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1747                                   struct ieee80211_vif *vif,
1748                                   struct ieee80211_sta *sta, u32 changed)
1749 {
1750         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1751
1752         if (vif->type == NL80211_IFTYPE_STATION &&
1753             changed & IEEE80211_RC_NSS_CHANGED)
1754                 iwl_mvm_sf_update(mvm, vif, false);
1755 }
1756
1757 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1758                                struct ieee80211_vif *vif, u16 ac,
1759                                const struct ieee80211_tx_queue_params *params)
1760 {
1761         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1762         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1763
1764         mvmvif->queue_params[ac] = *params;
1765
1766         /*
1767          * No need to update right away, we'll get BSS_CHANGED_QOS
1768          * The exception is P2P_DEVICE interface which needs immediate update.
1769          */
1770         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1771                 int ret;
1772
1773                 mutex_lock(&mvm->mutex);
1774                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1775                 mutex_unlock(&mvm->mutex);
1776                 return ret;
1777         }
1778         return 0;
1779 }
1780
1781 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1782                                       struct ieee80211_vif *vif)
1783 {
1784         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1785         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1786                            200 + vif->bss_conf.beacon_int);
1787         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1788                                100 + vif->bss_conf.beacon_int);
1789
1790         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1791                 return;
1792
1793         mutex_lock(&mvm->mutex);
1794         /* Try really hard to protect the session and hear a beacon */
1795         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1796         mutex_unlock(&mvm->mutex);
1797 }
1798
1799 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1800                                         struct ieee80211_vif *vif,
1801                                         struct cfg80211_sched_scan_request *req,
1802                                         struct ieee80211_sched_scan_ies *ies)
1803 {
1804         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1805         int ret;
1806
1807         mutex_lock(&mvm->mutex);
1808
1809         switch (mvm->scan_status) {
1810         case IWL_MVM_SCAN_OS:
1811                 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
1812                 ret = iwl_mvm_cancel_scan(mvm);
1813                 if (ret) {
1814                         ret = -EBUSY;
1815                         goto out;
1816                 }
1817
1818                 /*
1819                  * iwl_mvm_rx_scan_complete() will be called soon but will
1820                  * not reset the scan status as it won't be IWL_MVM_SCAN_OS
1821                  * any more since we queue the next scan immediately (below).
1822                  * We make sure it is called before the next scan starts by
1823                  * flushing the async-handlers work.
1824                  */
1825                 break;
1826         case IWL_MVM_SCAN_NONE:
1827                 break;
1828         default:
1829                 ret = -EBUSY;
1830                 goto out;
1831         }
1832
1833         mvm->scan_status = IWL_MVM_SCAN_SCHED;
1834
1835         ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1836         if (ret)
1837                 goto err;
1838
1839         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1840         if (ret)
1841                 goto err;
1842
1843         ret = iwl_mvm_sched_scan_start(mvm, req);
1844         if (!ret)
1845                 goto out;
1846 err:
1847         mvm->scan_status = IWL_MVM_SCAN_NONE;
1848 out:
1849         mutex_unlock(&mvm->mutex);
1850         /* make sure to flush the Rx handler before the next scan arrives */
1851         iwl_mvm_wait_for_async_handlers(mvm);
1852         return ret;
1853 }
1854
1855 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1856                                        struct ieee80211_vif *vif)
1857 {
1858         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1859         int ret;
1860
1861         mutex_lock(&mvm->mutex);
1862         ret = iwl_mvm_sched_scan_stop(mvm);
1863         mutex_unlock(&mvm->mutex);
1864         iwl_mvm_wait_for_async_handlers(mvm);
1865
1866         return ret;
1867 }
1868
1869 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1870                                enum set_key_cmd cmd,
1871                                struct ieee80211_vif *vif,
1872                                struct ieee80211_sta *sta,
1873                                struct ieee80211_key_conf *key)
1874 {
1875         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1876         int ret;
1877
1878         if (iwlwifi_mod_params.sw_crypto) {
1879                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1880                 return -EOPNOTSUPP;
1881         }
1882
1883         switch (key->cipher) {
1884         case WLAN_CIPHER_SUITE_TKIP:
1885                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1886                 /* fall-through */
1887         case WLAN_CIPHER_SUITE_CCMP:
1888                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1889                 break;
1890         case WLAN_CIPHER_SUITE_AES_CMAC:
1891                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1892                 break;
1893         case WLAN_CIPHER_SUITE_WEP40:
1894         case WLAN_CIPHER_SUITE_WEP104:
1895                 /*
1896                  * Support for TX only, at least for now, so accept
1897                  * the key and do nothing else. Then mac80211 will
1898                  * pass it for TX but we don't have to use it for RX.
1899                  */
1900                 return 0;
1901         default:
1902                 /* currently FW supports only one optional cipher scheme */
1903                 if (hw->n_cipher_schemes &&
1904                     hw->cipher_schemes->cipher == key->cipher)
1905                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1906                 else
1907                         return -EOPNOTSUPP;
1908         }
1909
1910         mutex_lock(&mvm->mutex);
1911
1912         switch (cmd) {
1913         case SET_KEY:
1914                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1915                      vif->type == NL80211_IFTYPE_AP) && !sta) {
1916                         /*
1917                          * GTK on AP interface is a TX-only key, return 0;
1918                          * on IBSS they're per-station and because we're lazy
1919                          * we don't support them for RX, so do the same.
1920                          */
1921                         ret = 0;
1922                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1923                         break;
1924                 }
1925
1926                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1927                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1928                 if (ret) {
1929                         IWL_WARN(mvm, "set key failed\n");
1930                         /*
1931                          * can't add key for RX, but we don't need it
1932                          * in the device for TX so still return 0
1933                          */
1934                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1935                         ret = 0;
1936                 }
1937
1938                 break;
1939         case DISABLE_KEY:
1940                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1941                         ret = 0;
1942                         break;
1943                 }
1944
1945                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1946                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1947                 break;
1948         default:
1949                 ret = -EINVAL;
1950         }
1951
1952         mutex_unlock(&mvm->mutex);
1953         return ret;
1954 }
1955
1956 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1957                                         struct ieee80211_vif *vif,
1958                                         struct ieee80211_key_conf *keyconf,
1959                                         struct ieee80211_sta *sta,
1960                                         u32 iv32, u16 *phase1key)
1961 {
1962         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1963
1964         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1965                 return;
1966
1967         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1968 }
1969
1970
1971 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1972                        struct ieee80211_vif *vif,
1973                        struct ieee80211_channel *channel,
1974                        int duration,
1975                        enum ieee80211_roc_type type)
1976 {
1977         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1978         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1979         struct cfg80211_chan_def chandef;
1980         struct iwl_mvm_phy_ctxt *phy_ctxt;
1981         int ret, i;
1982
1983         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1984                            duration, type);
1985
1986         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1987                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1988                 return -EINVAL;
1989         }
1990
1991         mutex_lock(&mvm->mutex);
1992
1993         for (i = 0; i < NUM_PHY_CTX; i++) {
1994                 phy_ctxt = &mvm->phy_ctxts[i];
1995                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1996                         continue;
1997
1998                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1999                         /*
2000                          * Unbind the P2P_DEVICE from the current PHY context,
2001                          * and if the PHY context is not used remove it.
2002                          */
2003                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2004                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2005                                 goto out_unlock;
2006
2007                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2008
2009                         /* Bind the P2P_DEVICE to the current PHY Context */
2010                         mvmvif->phy_ctxt = phy_ctxt;
2011
2012                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2013                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2014                                 goto out_unlock;
2015
2016                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2017                         goto schedule_time_event;
2018                 }
2019         }
2020
2021         /* Need to update the PHY context only if the ROC channel changed */
2022         if (channel == mvmvif->phy_ctxt->channel)
2023                 goto schedule_time_event;
2024
2025         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2026
2027         /*
2028          * Change the PHY context configuration as it is currently referenced
2029          * only by the P2P Device MAC
2030          */
2031         if (mvmvif->phy_ctxt->ref == 1) {
2032                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2033                                                &chandef, 1, 1);
2034                 if (ret)
2035                         goto out_unlock;
2036         } else {
2037                 /*
2038                  * The PHY context is shared with other MACs. Need to remove the
2039                  * P2P Device from the binding, allocate an new PHY context and
2040                  * create a new binding
2041                  */
2042                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2043                 if (!phy_ctxt) {
2044                         ret = -ENOSPC;
2045                         goto out_unlock;
2046                 }
2047
2048                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2049                                                1, 1);
2050                 if (ret) {
2051                         IWL_ERR(mvm, "Failed to change PHY context\n");
2052                         goto out_unlock;
2053                 }
2054
2055                 /* Unbind the P2P_DEVICE from the current PHY context */
2056                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2057                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2058                         goto out_unlock;
2059
2060                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2061
2062                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2063                 mvmvif->phy_ctxt = phy_ctxt;
2064
2065                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2066                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2067                         goto out_unlock;
2068
2069                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2070         }
2071
2072 schedule_time_event:
2073         /* Schedule the time events */
2074         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2075
2076 out_unlock:
2077         mutex_unlock(&mvm->mutex);
2078         IWL_DEBUG_MAC80211(mvm, "leave\n");
2079         return ret;
2080 }
2081
2082 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2083 {
2084         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2085
2086         IWL_DEBUG_MAC80211(mvm, "enter\n");
2087
2088         mutex_lock(&mvm->mutex);
2089         iwl_mvm_stop_p2p_roc(mvm);
2090         mutex_unlock(&mvm->mutex);
2091
2092         IWL_DEBUG_MAC80211(mvm, "leave\n");
2093         return 0;
2094 }
2095
2096 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2097                                struct ieee80211_chanctx_conf *ctx)
2098 {
2099         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2100         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2101         struct iwl_mvm_phy_ctxt *phy_ctxt;
2102         int ret;
2103
2104         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2105
2106         mutex_lock(&mvm->mutex);
2107         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2108         if (!phy_ctxt) {
2109                 ret = -ENOSPC;
2110                 goto out;
2111         }
2112
2113         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2114                                        ctx->rx_chains_static,
2115                                        ctx->rx_chains_dynamic);
2116         if (ret) {
2117                 IWL_ERR(mvm, "Failed to add PHY context\n");
2118                 goto out;
2119         }
2120
2121         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2122         *phy_ctxt_id = phy_ctxt->id;
2123 out:
2124         mutex_unlock(&mvm->mutex);
2125         return ret;
2126 }
2127
2128 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2129                                    struct ieee80211_chanctx_conf *ctx)
2130 {
2131         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2132         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2133         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2134
2135         mutex_lock(&mvm->mutex);
2136         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2137         mutex_unlock(&mvm->mutex);
2138 }
2139
2140 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2141                                    struct ieee80211_chanctx_conf *ctx,
2142                                    u32 changed)
2143 {
2144         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2145         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2146         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2147
2148         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2149                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2150                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2151                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2152                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2153                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2154                       phy_ctxt->ref, changed))
2155                 return;
2156
2157         mutex_lock(&mvm->mutex);
2158         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2159                                  ctx->rx_chains_static,
2160                                  ctx->rx_chains_dynamic);
2161         iwl_mvm_bt_coex_vif_change(mvm);
2162         mutex_unlock(&mvm->mutex);
2163 }
2164
2165 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2166                                       struct ieee80211_vif *vif,
2167                                       struct ieee80211_chanctx_conf *ctx)
2168 {
2169         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2170         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2171         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2172         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2173         int ret;
2174
2175         mutex_lock(&mvm->mutex);
2176
2177         mvmvif->phy_ctxt = phy_ctxt;
2178
2179         switch (vif->type) {
2180         case NL80211_IFTYPE_AP:
2181         case NL80211_IFTYPE_ADHOC:
2182                 /*
2183                  * The AP binding flow is handled as part of the start_ap flow
2184                  * (in bss_info_changed), similarly for IBSS.
2185                  */
2186                 ret = 0;
2187                 goto out_unlock;
2188         case NL80211_IFTYPE_STATION:
2189         case NL80211_IFTYPE_MONITOR:
2190                 break;
2191         default:
2192                 ret = -EINVAL;
2193                 goto out_unlock;
2194         }
2195
2196         ret = iwl_mvm_binding_add_vif(mvm, vif);
2197         if (ret)
2198                 goto out_unlock;
2199
2200         /*
2201          * Power state must be updated before quotas,
2202          * otherwise fw will complain.
2203          */
2204         iwl_mvm_power_update_mac(mvm, vif);
2205
2206         /* Setting the quota at this stage is only required for monitor
2207          * interfaces. For the other types, the bss_info changed flow
2208          * will handle quota settings.
2209          */
2210         if (vif->type == NL80211_IFTYPE_MONITOR) {
2211                 mvmvif->monitor_active = true;
2212                 ret = iwl_mvm_update_quotas(mvm, vif);
2213                 if (ret)
2214                         goto out_remove_binding;
2215         }
2216
2217         goto out_unlock;
2218
2219  out_remove_binding:
2220         iwl_mvm_binding_remove_vif(mvm, vif);
2221         iwl_mvm_power_update_mac(mvm, vif);
2222  out_unlock:
2223         mutex_unlock(&mvm->mutex);
2224         if (ret)
2225                 mvmvif->phy_ctxt = NULL;
2226         return ret;
2227 }
2228
2229 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2230                                          struct ieee80211_vif *vif,
2231                                          struct ieee80211_chanctx_conf *ctx)
2232 {
2233         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2234         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2235
2236         mutex_lock(&mvm->mutex);
2237
2238         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2239
2240         switch (vif->type) {
2241         case NL80211_IFTYPE_AP:
2242         case NL80211_IFTYPE_ADHOC:
2243                 goto out_unlock;
2244         case NL80211_IFTYPE_MONITOR:
2245                 mvmvif->monitor_active = false;
2246                 iwl_mvm_update_quotas(mvm, NULL);
2247                 break;
2248         default:
2249                 break;
2250         }
2251
2252         iwl_mvm_binding_remove_vif(mvm, vif);
2253         iwl_mvm_power_update_mac(mvm, vif);
2254
2255 out_unlock:
2256         mvmvif->phy_ctxt = NULL;
2257         mutex_unlock(&mvm->mutex);
2258 }
2259
2260 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2261                            struct ieee80211_sta *sta,
2262                            bool set)
2263 {
2264         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2265         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2266
2267         if (!mvm_sta || !mvm_sta->vif) {
2268                 IWL_ERR(mvm, "Station is not associated to a vif\n");
2269                 return -EINVAL;
2270         }
2271
2272         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2273 }
2274
2275 #ifdef CONFIG_NL80211_TESTMODE
2276 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2277         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2278         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2279         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2280 };
2281
2282 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2283                                       struct ieee80211_vif *vif,
2284                                       void *data, int len)
2285 {
2286         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2287         int err;
2288         u32 noa_duration;
2289
2290         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2291         if (err)
2292                 return err;
2293
2294         if (!tb[IWL_MVM_TM_ATTR_CMD])
2295                 return -EINVAL;
2296
2297         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2298         case IWL_MVM_TM_CMD_SET_NOA:
2299                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2300                     !vif->bss_conf.enable_beacon ||
2301                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2302                         return -EINVAL;
2303
2304                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2305                 if (noa_duration >= vif->bss_conf.beacon_int)
2306                         return -EINVAL;
2307
2308                 mvm->noa_duration = noa_duration;
2309                 mvm->noa_vif = vif;
2310
2311                 return iwl_mvm_update_quotas(mvm, NULL);
2312         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2313                 /* must be associated client vif - ignore authorized */
2314                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2315                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2316                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2317                         return -EINVAL;
2318
2319                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2320                         return iwl_mvm_enable_beacon_filter(mvm, vif,
2321                                                             CMD_SYNC);
2322                 return iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
2323         }
2324
2325         return -EOPNOTSUPP;
2326 }
2327
2328 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2329                                     struct ieee80211_vif *vif,
2330                                     void *data, int len)
2331 {
2332         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2333         int err;
2334
2335         mutex_lock(&mvm->mutex);
2336         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2337         mutex_unlock(&mvm->mutex);
2338
2339         return err;
2340 }
2341 #endif
2342
2343 const struct ieee80211_ops iwl_mvm_hw_ops = {
2344         .tx = iwl_mvm_mac_tx,
2345         .ampdu_action = iwl_mvm_mac_ampdu_action,
2346         .start = iwl_mvm_mac_start,
2347         .restart_complete = iwl_mvm_mac_restart_complete,
2348         .stop = iwl_mvm_mac_stop,
2349         .add_interface = iwl_mvm_mac_add_interface,
2350         .remove_interface = iwl_mvm_mac_remove_interface,
2351         .config = iwl_mvm_mac_config,
2352         .prepare_multicast = iwl_mvm_prepare_multicast,
2353         .configure_filter = iwl_mvm_configure_filter,
2354         .bss_info_changed = iwl_mvm_bss_info_changed,
2355         .hw_scan = iwl_mvm_mac_hw_scan,
2356         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
2357         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
2358         .sta_state = iwl_mvm_mac_sta_state,
2359         .sta_notify = iwl_mvm_mac_sta_notify,
2360         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
2361         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
2362         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
2363         .sta_rc_update = iwl_mvm_sta_rc_update,
2364         .conf_tx = iwl_mvm_mac_conf_tx,
2365         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
2366         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2367         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
2368         .set_key = iwl_mvm_mac_set_key,
2369         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2370         .remain_on_channel = iwl_mvm_roc,
2371         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2372         .add_chanctx = iwl_mvm_add_chanctx,
2373         .remove_chanctx = iwl_mvm_remove_chanctx,
2374         .change_chanctx = iwl_mvm_change_chanctx,
2375         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2376         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
2377
2378         .start_ap = iwl_mvm_start_ap_ibss,
2379         .stop_ap = iwl_mvm_stop_ap_ibss,
2380         .join_ibss = iwl_mvm_start_ap_ibss,
2381         .leave_ibss = iwl_mvm_stop_ap_ibss,
2382
2383         .set_tim = iwl_mvm_set_tim,
2384
2385         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2386
2387 #ifdef CONFIG_PM_SLEEP
2388         /* look at d3.c */
2389         .suspend = iwl_mvm_suspend,
2390         .resume = iwl_mvm_resume,
2391         .set_wakeup = iwl_mvm_set_wakeup,
2392         .set_rekey_data = iwl_mvm_set_rekey_data,
2393 #if IS_ENABLED(CONFIG_IPV6)
2394         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2395 #endif
2396         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2397 #endif
2398 };