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

   1 /******************************************************************************
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   6  * GPL LICENSE SUMMARY
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  11  * it under the terms of version 2 of the GNU General Public License as
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  14  * This program is distributed in the hope that it will be useful, but
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  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  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 #include "iwl-fw-error-dump.h"
  84 #include "iwl-prph.h"
  85
  86 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  87         {
  88                 .max = 1,
  89                 .types = BIT(NL80211_IFTYPE_STATION),
  90         },
  91         {
  92                 .max = 1,
  93                 .types = BIT(NL80211_IFTYPE_AP) |
  94                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  95                         BIT(NL80211_IFTYPE_P2P_GO),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 100         },
 101 };
 102
 103 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 104         {
 105                 .num_different_channels = 1,
 106                 .max_interfaces = 3,
 107                 .limits = iwl_mvm_limits,
 108                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 109         },
 110 };
 111
 112 #ifdef CONFIG_PM_SLEEP
 113 static const struct nl80211_wowlan_tcp_data_token_feature
 114 iwl_mvm_wowlan_tcp_token_feature = {
 115         .min_len = 0,
 116         .max_len = 255,
 117         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 118 };
 119
 120 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 121         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 122         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 123                             sizeof(struct ethhdr) -
 124                             sizeof(struct iphdr) -
 125                             sizeof(struct tcphdr),
 126         .data_interval_max = 65535, /* __le16 in API */
 127         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 128                             sizeof(struct ethhdr) -
 129                             sizeof(struct iphdr) -
 130                             sizeof(struct tcphdr),
 131         .seq = true,
 132 };
 133 #endif
 134
 135 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 136 /*
 137  * Use the reserved field to indicate magic values.
 138  * these values will only be used internally by the driver,
 139  * and won't make it to the fw (reserved will be 0).
 140  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 141  *      be the vif's ip address. in case there is not a single
 142  *      ip address (0, or more than 1), this attribute will
 143  *      be skipped.
 144  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 145  *      the LSB bytes of the vif's mac address
 146  */
 147 enum {
 148         BC_FILTER_MAGIC_NONE = 0,
 149         BC_FILTER_MAGIC_IP,
 150         BC_FILTER_MAGIC_MAC,
 151 };
 152
 153 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 154         {
 155                 /* arp */
 156                 .discard = 0,
 157                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 158                 .attrs = {
 159                         {
 160                                 /* frame type - arp, hw type - ethernet */
 161                                 .offset_type =
 162                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 163                                 .offset = sizeof(rfc1042_header),
 164                                 .val = cpu_to_be32(0x08060001),
 165                                 .mask = cpu_to_be32(0xffffffff),
 166                         },
 167                         {
 168                                 /* arp dest ip */
 169                                 .offset_type =
 170                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 171                                 .offset = sizeof(rfc1042_header) + 2 +
 172                                           sizeof(struct arphdr) +
 173                                           ETH_ALEN + sizeof(__be32) +
 174                                           ETH_ALEN,
 175                                 .mask = cpu_to_be32(0xffffffff),
 176                                 /* mark it as special field */
 177                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 178                         },
 179                 },
 180         },
 181         {
 182                 /* dhcp offer bcast */
 183                 .discard = 0,
 184                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 185                 .attrs = {
 186                         {
 187                                 /* udp dest port - 68 (bootp client)*/
 188                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 189                                 .offset = offsetof(struct udphdr, dest),
 190                                 .val = cpu_to_be32(0x00440000),
 191                                 .mask = cpu_to_be32(0xffff0000),
 192                         },
 193                         {
 194                                 /* dhcp - lsb bytes of client hw address */
 195                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 196                                 .offset = 38,
 197                                 .mask = cpu_to_be32(0xffffffff),
 198                                 /* mark it as special field */
 199                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 200                         },
 201                 },
 202         },
 203         /* last filter must be empty */
 204         {},
 205 };
 206 #endif
 207
 208 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 209 {
 210         if (!iwl_mvm_is_d0i3_supported(mvm))
 211                 return;
 212
 213         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 214         WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
 215         iwl_trans_ref(mvm->trans);
 216 }
 217
 218 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 219 {
 220         if (!iwl_mvm_is_d0i3_supported(mvm))
 221                 return;
 222
 223         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 224         WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
 225         iwl_trans_unref(mvm->trans);
 226 }
 227
 228 static void
 229 iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
 230 {
 231         int i;
 232
 233         if (!iwl_mvm_is_d0i3_supported(mvm))
 234                 return;
 235
 236         for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
 237                 if (ref == i)
 238                         continue;
 239
 240                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
 241                 clear_bit(i, mvm->ref_bitmap);
 242                 iwl_trans_unref(mvm->trans);
 243         }
 244 }
 245
 246 static int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 247 {
 248         iwl_mvm_ref(mvm, ref_type);
 249
 250         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 251                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 252                                 HZ)) {
 253                 WARN_ON_ONCE(1);
 254                 iwl_mvm_unref(mvm, ref_type);
 255                 return -EIO;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 262 {
 263         int i;
 264
 265         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 266         for (i = 0; i < NUM_PHY_CTX; i++) {
 267                 mvm->phy_ctxts[i].id = i;
 268                 mvm->phy_ctxts[i].ref = 0;
 269         }
 270 }
 271
 272 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 273 {
 274         /* we create the 802.11 header and SSID element */
 275         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
 276                 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
 277         return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 278 }
 279
 280 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 281 {
 282         struct ieee80211_hw *hw = mvm->hw;
 283         int num_mac, ret, i;
 284
 285         /* Tell mac80211 our characteristics */
 286         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 287                     IEEE80211_HW_SPECTRUM_MGMT |
 288                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 289                     IEEE80211_HW_QUEUE_CONTROL |
 290                     IEEE80211_HW_WANT_MONITOR_VIF |
 291                     IEEE80211_HW_SUPPORTS_PS |
 292                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 293                     IEEE80211_HW_AMPDU_AGGREGATION |
 294                     IEEE80211_HW_TIMING_BEACON_ONLY |
 295                     IEEE80211_HW_CONNECTION_MONITOR |
 296                     IEEE80211_HW_CHANCTX_STA_CSA |
 297                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 298                     IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 299
 300         hw->queues = mvm->first_agg_queue;
 301         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 302         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 303                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 304         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
 305         hw->rate_control_algorithm = "iwl-mvm-rs";
 306
 307         /*
 308          * Enable 11w if advertised by firmware and software crypto
 309          * is not enabled (as the firmware will interpret some mgmt
 310          * packets, so enabling it with software crypto isn't safe)
 311          */
 312         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 313             !iwlwifi_mod_params.sw_crypto)
 314                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 315
 316         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
 317             IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
 318             !iwlwifi_mod_params.uapsd_disable) {
 319                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 320                 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 321                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 322         }
 323
 324         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
 325             !iwlwifi_mod_params.uapsd_disable) {
 326                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 327                 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 328                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 329         }
 330
 331         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
 332                 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
 333
 334         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 335         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 336         hw->chanctx_data_size = sizeof(u16);
 337
 338         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 339                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 340                 BIT(NL80211_IFTYPE_AP) |
 341                 BIT(NL80211_IFTYPE_P2P_GO) |
 342                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 343                 BIT(NL80211_IFTYPE_ADHOC);
 344
 345         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 346         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 347                                        REGULATORY_DISABLE_BEACON_HINTS;
 348
 349         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 350                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 351
 352         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
 353                 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 354
 355         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 356         hw->wiphy->n_iface_combinations =
 357                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 358
 359         hw->wiphy->max_remain_on_channel_duration = 10000;
 360         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 361
 362         /* Extract MAC address */
 363         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 364         hw->wiphy->addresses = mvm->addresses;
 365         hw->wiphy->n_addresses = 1;
 366
 367         /* Extract additional MAC addresses if available */
 368         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 369                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 370
 371         for (i = 1; i < num_mac; i++) {
 372                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 373                        ETH_ALEN);
 374                 mvm->addresses[i].addr[5]++;
 375                 hw->wiphy->n_addresses++;
 376         }
 377
 378         iwl_mvm_reset_phy_ctxts(mvm);
 379
 380         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 381
 382         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 383
 384         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 385                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 386                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 387         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 388                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 389                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 390
 391         hw->wiphy->hw_version = mvm->trans->hw_id;
 392
 393         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 394                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 395         else
 396                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 397
 398         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 399         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 400         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 401         /* we create the 802.11 header and zero length SSID IE. */
 402         hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 403
 404         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 405                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 406                                NL80211_FEATURE_P2P_GO_OPPPS;
 407
 408         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 409
 410         /* currently FW API supports only one optional cipher scheme */
 411         if (mvm->fw->cs[0].cipher) {
 412                 mvm->hw->n_cipher_schemes = 1;
 413                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 414         }
 415
 416 #ifdef CONFIG_PM_SLEEP
 417         if (iwl_mvm_is_d0i3_supported(mvm) &&
 418             device_can_wakeup(mvm->trans->dev)) {
 419                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 420                 hw->wiphy->wowlan = &mvm->wowlan;
 421         } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 422             mvm->trans->ops->d3_suspend &&
 423             mvm->trans->ops->d3_resume &&
 424             device_can_wakeup(mvm->trans->dev)) {
 425                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 426                                     WIPHY_WOWLAN_DISCONNECT |
 427                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 428                                     WIPHY_WOWLAN_RFKILL_RELEASE;
 429                 if (!iwlwifi_mod_params.sw_crypto)
 430                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 431                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 432                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 433
 434                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 435                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 436                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 437                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 438                 hw->wiphy->wowlan = &mvm->wowlan;
 439         }
 440 #endif
 441
 442 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 443         /* assign default bcast filtering configuration */
 444         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 445 #endif
 446
 447         ret = iwl_mvm_leds_init(mvm);
 448         if (ret)
 449                 return ret;
 450
 451         ret = ieee80211_register_hw(mvm->hw);
 452         if (ret)
 453                 iwl_mvm_leds_exit(mvm);
 454
 455         return ret;
 456 }
 457
 458 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 459                              struct ieee80211_sta *sta,
 460                              struct sk_buff *skb)
 461 {
 462         struct iwl_mvm_sta *mvmsta;
 463         bool defer = false;
 464
 465         /*
 466          * double check the IN_D0I3 flag both before and after
 467          * taking the spinlock, in order to prevent taking
 468          * the spinlock when not needed.
 469          */
 470         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 471                 return false;
 472
 473         spin_lock(&mvm->d0i3_tx_lock);
 474         /*
 475          * testing the flag again ensures the skb dequeue
 476          * loop (on d0i3 exit) hasn't run yet.
 477          */
 478         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 479                 goto out;
 480
 481         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 482         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 483             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 484                 goto out;
 485
 486         __skb_queue_tail(&mvm->d0i3_tx, skb);
 487         ieee80211_stop_queues(mvm->hw);
 488
 489         /* trigger wakeup */
 490         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 491         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 492
 493         defer = true;
 494 out:
 495         spin_unlock(&mvm->d0i3_tx_lock);
 496         return defer;
 497 }
 498
 499 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 500                            struct ieee80211_tx_control *control,
 501                            struct sk_buff *skb)
 502 {
 503         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 504         struct ieee80211_sta *sta = control->sta;
 505         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 506         struct ieee80211_hdr *hdr = (void *)skb->data;
 507
 508         if (iwl_mvm_is_radio_killed(mvm)) {
 509                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 510                 goto drop;
 511         }
 512
 513         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 514             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 515                 goto drop;
 516
 517         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 518         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 519                      ieee80211_is_mgmt(hdr->frame_control) &&
 520                      !ieee80211_is_deauth(hdr->frame_control) &&
 521                      !ieee80211_is_disassoc(hdr->frame_control) &&
 522                      !ieee80211_is_action(hdr->frame_control)))
 523                 sta = NULL;
 524
 525         if (sta) {
 526                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 527                         return;
 528                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 529                         goto drop;
 530                 return;
 531         }
 532
 533         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 534                 goto drop;
 535         return;
 536  drop:
 537         ieee80211_free_txskb(hw, skb);
 538 }
 539
 540 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 541 {
 542         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 543                 return false;
 544         return true;
 545 }
 546
 547 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 548 {
 549         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 550                 return false;
 551         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 552                 return true;
 553
 554         /* enabled by default */
 555         return true;
 556 }
 557
 558 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 559                                     struct ieee80211_vif *vif,
 560                                     enum ieee80211_ampdu_mlme_action action,
 561                                     struct ieee80211_sta *sta, u16 tid,
 562                                     u16 *ssn, u8 buf_size)
 563 {
 564         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 565         int ret;
 566         bool tx_agg_ref = false;
 567
 568         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 569                      sta->addr, tid, action);
 570
 571         if (!(mvm->nvm_data->sku_cap_11n_enable))
 572                 return -EACCES;
 573
 574         /* return from D0i3 before starting a new Tx aggregation */
 575         switch (action) {
 576         case IEEE80211_AMPDU_TX_START:
 577         case IEEE80211_AMPDU_TX_STOP_CONT:
 578         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 579         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 580         case IEEE80211_AMPDU_TX_OPERATIONAL:
 581                 /*
 582                  * for tx start, wait synchronously until D0i3 exit to
 583                  * get the correct sequence number for the tid.
 584                  * additionally, some other ampdu actions use direct
 585                  * target access, which is not handled automatically
 586                  * by the trans layer (unlike commands), so wait for
 587                  * d0i3 exit in these cases as well.
 588                  */
 589                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 590                 if (ret)
 591                         return ret;
 592
 593                 tx_agg_ref = true;
 594                 break;
 595         default:
 596                 break;
 597         }
 598
 599         mutex_lock(&mvm->mutex);
 600
 601         switch (action) {
 602         case IEEE80211_AMPDU_RX_START:
 603                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 604                         ret = -EINVAL;
 605                         break;
 606                 }
 607                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 608                 break;
 609         case IEEE80211_AMPDU_RX_STOP:
 610                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 611                 break;
 612         case IEEE80211_AMPDU_TX_START:
 613                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 614                         ret = -EINVAL;
 615                         break;
 616                 }
 617                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 618                 break;
 619         case IEEE80211_AMPDU_TX_STOP_CONT:
 620                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 621                 break;
 622         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 623         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 624                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 625                 break;
 626         case IEEE80211_AMPDU_TX_OPERATIONAL:
 627                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 628                 break;
 629         default:
 630                 WARN_ON_ONCE(1);
 631                 ret = -EINVAL;
 632                 break;
 633         }
 634         mutex_unlock(&mvm->mutex);
 635
 636         /*
 637          * If the tid is marked as started, we won't use it for offloaded
 638          * traffic on the next D0i3 entry. It's safe to unref.
 639          */
 640         if (tx_agg_ref)
 641                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 642
 643         return ret;
 644 }
 645
 646 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 647                                      struct ieee80211_vif *vif)
 648 {
 649         struct iwl_mvm *mvm = data;
 650         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 651
 652         mvmvif->uploaded = false;
 653         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 654
 655         /* does this make sense at all? */
 656         mvmvif->color++;
 657
 658         spin_lock_bh(&mvm->time_event_lock);
 659         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 660         spin_unlock_bh(&mvm->time_event_lock);
 661
 662         mvmvif->phy_ctxt = NULL;
 663 }
 664
 665 #ifdef CONFIG_IWLWIFI_DEBUGFS
 666 static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 667 {
 668         struct iwl_fw_error_dump_file *dump_file;
 669         struct iwl_fw_error_dump_data *dump_data;
 670         struct iwl_fw_error_dump_info *dump_info;
 671         const struct fw_img *img;
 672         u32 sram_len, sram_ofs;
 673         u32 file_len, rxf_len;
 674         unsigned long flags;
 675         u32 trans_len;
 676         int reg_val;
 677
 678         lockdep_assert_held(&mvm->mutex);
 679
 680         if (mvm->fw_error_dump)
 681                 return;
 682
 683         img = &mvm->fw->img[mvm->cur_ucode];
 684         sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
 685         sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
 686
 687         /* reading buffer size */
 688         reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
 689         rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
 690
 691         /* the register holds the value divided by 128 */
 692         rxf_len = rxf_len << 7;
 693
 694         file_len = sizeof(*dump_file) +
 695                    sizeof(*dump_data) * 3 +
 696                    sram_len +
 697                    rxf_len +
 698                    sizeof(*dump_info);
 699
 700         trans_len = iwl_trans_dump_data(mvm->trans, NULL, 0);
 701         if (trans_len)
 702                 file_len += trans_len;
 703
 704         dump_file = vzalloc(file_len);
 705         if (!dump_file)
 706                 return;
 707
 708         mvm->fw_error_dump = dump_file;
 709
 710         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
 711         dump_file->file_len = cpu_to_le32(file_len);
 712         dump_data = (void *)dump_file->data;
 713
 714         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
 715         dump_data->len = cpu_to_le32(sizeof(*dump_info));
 716         dump_info = (void *) dump_data->data;
 717         dump_info->device_family =
 718                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
 719                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
 720                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
 721         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
 722                sizeof(dump_info->fw_human_readable));
 723         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
 724                 sizeof(dump_info->dev_human_readable));
 725         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
 726                 sizeof(dump_info->bus_human_readable));
 727
 728         dump_data = iwl_fw_error_next_data(dump_data);
 729         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
 730         dump_data->len = cpu_to_le32(rxf_len);
 731
 732         if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
 733                 u32 *rxf = (void *)dump_data->data;
 734                 int i;
 735
 736                 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
 737                         iwl_trans_write_prph(mvm->trans,
 738                                              RXF_LD_FENCE_OFFSET_ADDR,
 739                                              i * sizeof(u32));
 740                         rxf[i] = iwl_trans_read_prph(mvm->trans,
 741                                                      RXF_FIFO_RD_FENCE_ADDR);
 742                 }
 743                 iwl_trans_release_nic_access(mvm->trans, &flags);
 744         }
 745
 746         dump_data = iwl_fw_error_next_data(dump_data);
 747         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
 748         dump_data->len = cpu_to_le32(sram_len);
 749         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
 750                                  sram_len);
 751
 752         if (trans_len) {
 753                 void *buf = iwl_fw_error_next_data(dump_data);
 754                 u32 real_trans_len = iwl_trans_dump_data(mvm->trans, buf,
 755                                                          trans_len);
 756                 dump_data = (void *)((u8 *)buf + real_trans_len);
 757                 dump_file->file_len =
 758                         cpu_to_le32(file_len - trans_len + real_trans_len);
 759         }
 760 }
 761 #endif
 762
 763 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 764 {
 765 #ifdef CONFIG_IWLWIFI_DEBUGFS
 766         static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
 767
 768         iwl_mvm_fw_error_dump(mvm);
 769
 770         /* notify the userspace about the error we had */
 771         kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
 772 #endif
 773
 774         iwl_trans_stop_device(mvm->trans);
 775
 776         mvm->scan_status = IWL_MVM_SCAN_NONE;
 777
 778         /* just in case one was running */
 779         ieee80211_remain_on_channel_expired(mvm->hw);
 780
 781         ieee80211_iterate_active_interfaces_atomic(
 782                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 783                 iwl_mvm_cleanup_iterator, mvm);
 784
 785         mvm->p2p_device_vif = NULL;
 786         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 787
 788         iwl_mvm_reset_phy_ctxts(mvm);
 789         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 790         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 791
 792         ieee80211_wake_queues(mvm->hw);
 793
 794         /* cleanup all stale references (scan, roc), but keep the
 795          * ucode_down ref until reconfig is complete */
 796         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 797
 798         mvm->vif_count = 0;
 799         mvm->rx_ba_sessions = 0;
 800 }
 801
 802 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 803 {
 804         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 805         int ret;
 806
 807         mutex_lock(&mvm->mutex);
 808
 809         /* Clean up some internal and mac80211 state on restart */
 810         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 811                 iwl_mvm_restart_cleanup(mvm);
 812
 813         ret = iwl_mvm_up(mvm);
 814
 815         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
 816                 /* Something went wrong - we need to finish some cleanup
 817                  * that normally iwl_mvm_mac_restart_complete() below
 818                  * would do.
 819                  */
 820                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 821                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
 822         }
 823
 824         mutex_unlock(&mvm->mutex);
 825
 826         return ret;
 827 }
 828
 829 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 830 {
 831         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 832         int ret;
 833
 834         mutex_lock(&mvm->mutex);
 835
 836         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 837         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 838         ret = iwl_mvm_update_quotas(mvm, NULL);
 839         if (ret)
 840                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 841                         ret);
 842
 843         /* allow transport/FW low power modes */
 844         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 845
 846         mutex_unlock(&mvm->mutex);
 847 }
 848
 849 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 850 {
 851         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 852
 853         flush_work(&mvm->d0i3_exit_work);
 854         flush_work(&mvm->async_handlers_wk);
 855
 856         mutex_lock(&mvm->mutex);
 857
 858         /* disallow low power states when the FW is down */
 859         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
 860
 861         /* async_handlers_wk is now blocked */
 862
 863         /*
 864          * The work item could be running or queued if the
 865          * ROC time event stops just as we get here.
 866          */
 867         cancel_work_sync(&mvm->roc_done_wk);
 868
 869         iwl_trans_stop_device(mvm->trans);
 870
 871         iwl_mvm_async_handlers_purge(mvm);
 872         /* async_handlers_list is empty and will stay empty: HW is stopped */
 873
 874         /* the fw is stopped, the aux sta is dead: clean up driver state */
 875         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 876
 877         mutex_unlock(&mvm->mutex);
 878
 879         /*
 880          * The worker might have been waiting for the mutex, let it run and
 881          * discover that its list is now empty.
 882          */
 883         cancel_work_sync(&mvm->async_handlers_wk);
 884 }
 885
 886 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
 887 {
 888         u16 i;
 889
 890         lockdep_assert_held(&mvm->mutex);
 891
 892         for (i = 0; i < NUM_PHY_CTX; i++)
 893                 if (!mvm->phy_ctxts[i].ref)
 894                         return &mvm->phy_ctxts[i];
 895
 896         IWL_ERR(mvm, "No available PHY context\n");
 897         return NULL;
 898 }
 899
 900 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 901                                 s8 tx_power)
 902 {
 903         /* FW is in charge of regulatory enforcement */
 904         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
 905                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
 906                 .pwr_restriction = cpu_to_le16(tx_power),
 907         };
 908
 909         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
 910                                     sizeof(reduce_txpwr_cmd),
 911                                     &reduce_txpwr_cmd);
 912 }
 913
 914 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 915                                      struct ieee80211_vif *vif)
 916 {
 917         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 918         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 919         int ret;
 920
 921         /*
 922          * make sure D0i3 exit is completed, otherwise a target access
 923          * during tx queue configuration could be done when still in
 924          * D0i3 state.
 925          */
 926         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
 927         if (ret)
 928                 return ret;
 929
 930         /*
 931          * Not much to do here. The stack will not allow interface
 932          * types or combinations that we didn't advertise, so we
 933          * don't really have to check the types.
 934          */
 935
 936         mutex_lock(&mvm->mutex);
 937
 938         /* Allocate resources for the MAC context, and add it to the fw  */
 939         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 940         if (ret)
 941                 goto out_unlock;
 942
 943         /* Counting number of interfaces is needed for legacy PM */
 944         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 945                 mvm->vif_count++;
 946
 947         /*
 948          * The AP binding flow can be done only after the beacon
 949          * template is configured (which happens only in the mac80211
 950          * start_ap() flow), and adding the broadcast station can happen
 951          * only after the binding.
 952          * In addition, since modifying the MAC before adding a bcast
 953          * station is not allowed by the FW, delay the adding of MAC context to
 954          * the point where we can also add the bcast station.
 955          * In short: there's not much we can do at this point, other than
 956          * allocating resources :)
 957          */
 958         if (vif->type == NL80211_IFTYPE_AP ||
 959             vif->type == NL80211_IFTYPE_ADHOC) {
 960                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 961                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 962                                                qmask,
 963                                                ieee80211_vif_type_p2p(vif));
 964                 if (ret) {
 965                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 966                         goto out_release;
 967                 }
 968
 969                 iwl_mvm_vif_dbgfs_register(mvm, vif);
 970                 goto out_unlock;
 971         }
 972
 973         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 974         if (ret)
 975                 goto out_release;
 976
 977         ret = iwl_mvm_power_update_mac(mvm);
 978         if (ret)
 979                 goto out_release;
 980
 981         /* beacon filtering */
 982         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
 983         if (ret)
 984                 goto out_remove_mac;
 985
 986         if (!mvm->bf_allowed_vif &&
 987             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
 988                 mvm->bf_allowed_vif = mvmvif;
 989                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 990                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 991         }
 992
 993         /*
 994          * P2P_DEVICE interface does not have a channel context assigned to it,
 995          * so a dedicated PHY context is allocated to it and the corresponding
 996          * MAC context is bound to it at this stage.
 997          */
 998         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 999
1000                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1001                 if (!mvmvif->phy_ctxt) {
1002                         ret = -ENOSPC;
1003                         goto out_free_bf;
1004                 }
1005
1006                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1007                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1008                 if (ret)
1009                         goto out_unref_phy;
1010
1011                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1012                 if (ret)
1013                         goto out_unbind;
1014
1015                 /* Save a pointer to p2p device vif, so it can later be used to
1016                  * update the p2p device MAC when a GO is started/stopped */
1017                 mvm->p2p_device_vif = vif;
1018         }
1019
1020         iwl_mvm_vif_dbgfs_register(mvm, vif);
1021         goto out_unlock;
1022
1023  out_unbind:
1024         iwl_mvm_binding_remove_vif(mvm, vif);
1025  out_unref_phy:
1026         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1027  out_free_bf:
1028         if (mvm->bf_allowed_vif == mvmvif) {
1029                 mvm->bf_allowed_vif = NULL;
1030                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1031                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1032         }
1033  out_remove_mac:
1034         mvmvif->phy_ctxt = NULL;
1035         iwl_mvm_mac_ctxt_remove(mvm, vif);
1036  out_release:
1037         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1038                 mvm->vif_count--;
1039
1040         iwl_mvm_mac_ctxt_release(mvm, vif);
1041  out_unlock:
1042         mutex_unlock(&mvm->mutex);
1043
1044         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1045
1046         return ret;
1047 }
1048
1049 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1050                                         struct ieee80211_vif *vif)
1051 {
1052         u32 tfd_msk = 0, ac;
1053
1054         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1055                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1056                         tfd_msk |= BIT(vif->hw_queue[ac]);
1057
1058         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1059                 tfd_msk |= BIT(vif->cab_queue);
1060
1061         if (tfd_msk) {
1062                 mutex_lock(&mvm->mutex);
1063                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1064                 mutex_unlock(&mvm->mutex);
1065         }
1066
1067         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1068                 /*
1069                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1070                  * We assume here that all the packets sent to the OFFCHANNEL
1071                  * queue are sent in ROC session.
1072                  */
1073                 flush_work(&mvm->roc_done_wk);
1074         } else {
1075                 /*
1076                  * By now, all the AC queues are empty. The AGG queues are
1077                  * empty too. We already got all the Tx responses for all the
1078                  * packets in the queues. The drain work can have been
1079                  * triggered. Flush it.
1080                  */
1081                 flush_work(&mvm->sta_drained_wk);
1082         }
1083 }
1084
1085 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1086                                          struct ieee80211_vif *vif)
1087 {
1088         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1089         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1090
1091         iwl_mvm_prepare_mac_removal(mvm, vif);
1092
1093         mutex_lock(&mvm->mutex);
1094
1095         if (mvm->bf_allowed_vif == mvmvif) {
1096                 mvm->bf_allowed_vif = NULL;
1097                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1098                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1099         }
1100
1101         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1102
1103         /*
1104          * For AP/GO interface, the tear down of the resources allocated to the
1105          * interface is be handled as part of the stop_ap flow.
1106          */
1107         if (vif->type == NL80211_IFTYPE_AP ||
1108             vif->type == NL80211_IFTYPE_ADHOC) {
1109 #ifdef CONFIG_NL80211_TESTMODE
1110                 if (vif == mvm->noa_vif) {
1111                         mvm->noa_vif = NULL;
1112                         mvm->noa_duration = 0;
1113                 }
1114 #endif
1115                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1116                 goto out_release;
1117         }
1118
1119         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1120                 mvm->p2p_device_vif = NULL;
1121                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1122                 iwl_mvm_binding_remove_vif(mvm, vif);
1123                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1124                 mvmvif->phy_ctxt = NULL;
1125         }
1126
1127         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1128                 mvm->vif_count--;
1129
1130         iwl_mvm_power_update_mac(mvm);
1131         iwl_mvm_mac_ctxt_remove(mvm, vif);
1132
1133 out_release:
1134         iwl_mvm_mac_ctxt_release(mvm, vif);
1135         mutex_unlock(&mvm->mutex);
1136 }
1137
1138 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1139 {
1140         return 0;
1141 }
1142
1143 struct iwl_mvm_mc_iter_data {
1144         struct iwl_mvm *mvm;
1145         int port_id;
1146 };
1147
1148 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1149                                       struct ieee80211_vif *vif)
1150 {
1151         struct iwl_mvm_mc_iter_data *data = _data;
1152         struct iwl_mvm *mvm = data->mvm;
1153         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1154         int ret, len;
1155
1156         /* if we don't have free ports, mcast frames will be dropped */
1157         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1158                 return;
1159
1160         if (vif->type != NL80211_IFTYPE_STATION ||
1161             !vif->bss_conf.assoc)
1162                 return;
1163
1164         cmd->port_id = data->port_id++;
1165         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1166         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1167
1168         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1169         if (ret)
1170                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1171 }
1172
1173 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1174 {
1175         struct iwl_mvm_mc_iter_data iter_data = {
1176                 .mvm = mvm,
1177         };
1178
1179         lockdep_assert_held(&mvm->mutex);
1180
1181         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1182                 return;
1183
1184         ieee80211_iterate_active_interfaces_atomic(
1185                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1186                 iwl_mvm_mc_iface_iterator, &iter_data);
1187 }
1188
1189 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1190                                      struct netdev_hw_addr_list *mc_list)
1191 {
1192         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193         struct iwl_mcast_filter_cmd *cmd;
1194         struct netdev_hw_addr *addr;
1195         int addr_count = netdev_hw_addr_list_count(mc_list);
1196         bool pass_all = false;
1197         int len;
1198
1199         if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1200                 pass_all = true;
1201                 addr_count = 0;
1202         }
1203
1204         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1205         cmd = kzalloc(len, GFP_ATOMIC);
1206         if (!cmd)
1207                 return 0;
1208
1209         if (pass_all) {
1210                 cmd->pass_all = 1;
1211                 return (u64)(unsigned long)cmd;
1212         }
1213
1214         netdev_hw_addr_list_for_each(addr, mc_list) {
1215                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1216                                    cmd->count, addr->addr);
1217                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1218                        addr->addr, ETH_ALEN);
1219                 cmd->count++;
1220         }
1221
1222         return (u64)(unsigned long)cmd;
1223 }
1224
1225 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1226                                      unsigned int changed_flags,
1227                                      unsigned int *total_flags,
1228                                      u64 multicast)
1229 {
1230         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1231         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1232
1233         mutex_lock(&mvm->mutex);
1234
1235         /* replace previous configuration */
1236         kfree(mvm->mcast_filter_cmd);
1237         mvm->mcast_filter_cmd = cmd;
1238
1239         if (!cmd)
1240                 goto out;
1241
1242         iwl_mvm_recalc_multicast(mvm);
1243 out:
1244         mutex_unlock(&mvm->mutex);
1245         *total_flags = 0;
1246 }
1247
1248 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1249 struct iwl_bcast_iter_data {
1250         struct iwl_mvm *mvm;
1251         struct iwl_bcast_filter_cmd *cmd;
1252         u8 current_filter;
1253 };
1254
1255 static void
1256 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1257                          const struct iwl_fw_bcast_filter *in_filter,
1258                          struct iwl_fw_bcast_filter *out_filter)
1259 {
1260         struct iwl_fw_bcast_filter_attr *attr;
1261         int i;
1262
1263         memcpy(out_filter, in_filter, sizeof(*out_filter));
1264
1265         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1266                 attr = &out_filter->attrs[i];
1267
1268                 if (!attr->mask)
1269                         break;
1270
1271                 switch (attr->reserved1) {
1272                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1273                         if (vif->bss_conf.arp_addr_cnt != 1) {
1274                                 attr->mask = 0;
1275                                 continue;
1276                         }
1277
1278                         attr->val = vif->bss_conf.arp_addr_list[0];
1279                         break;
1280                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1281                         attr->val = *(__be32 *)&vif->addr[2];
1282                         break;
1283                 default:
1284                         break;
1285                 }
1286                 attr->reserved1 = 0;
1287                 out_filter->num_attrs++;
1288         }
1289 }
1290
1291 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1292                                           struct ieee80211_vif *vif)
1293 {
1294         struct iwl_bcast_iter_data *data = _data;
1295         struct iwl_mvm *mvm = data->mvm;
1296         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1297         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1298         struct iwl_fw_bcast_mac *bcast_mac;
1299         int i;
1300
1301         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1302                 return;
1303
1304         bcast_mac = &cmd->macs[mvmvif->id];
1305
1306         /*
1307          * enable filtering only for associated stations, but not for P2P
1308          * Clients
1309          */
1310         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1311             !vif->bss_conf.assoc)
1312                 return;
1313
1314         bcast_mac->default_discard = 1;
1315
1316         /* copy all configured filters */
1317         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1318                 /*
1319                  * Make sure we don't exceed our filters limit.
1320                  * if there is still a valid filter to be configured,
1321                  * be on the safe side and just allow bcast for this mac.
1322                  */
1323                 if (WARN_ON_ONCE(data->current_filter >=
1324                                  ARRAY_SIZE(cmd->filters))) {
1325                         bcast_mac->default_discard = 0;
1326                         bcast_mac->attached_filters = 0;
1327                         break;
1328                 }
1329
1330                 iwl_mvm_set_bcast_filter(vif,
1331                                          &mvm->bcast_filters[i],
1332                                          &cmd->filters[data->current_filter]);
1333
1334                 /* skip current filter if it contains no attributes */
1335                 if (!cmd->filters[data->current_filter].num_attrs)
1336                         continue;
1337
1338                 /* attach the filter to current mac */
1339                 bcast_mac->attached_filters |=
1340                                 cpu_to_le16(BIT(data->current_filter));
1341
1342                 data->current_filter++;
1343         }
1344 }
1345
1346 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1347                                     struct iwl_bcast_filter_cmd *cmd)
1348 {
1349         struct iwl_bcast_iter_data iter_data = {
1350                 .mvm = mvm,
1351                 .cmd = cmd,
1352         };
1353
1354         memset(cmd, 0, sizeof(*cmd));
1355         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1356         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1357
1358 #ifdef CONFIG_IWLWIFI_DEBUGFS
1359         /* use debugfs filters/macs if override is configured */
1360         if (mvm->dbgfs_bcast_filtering.override) {
1361                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1362                        sizeof(cmd->filters));
1363                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1364                        sizeof(cmd->macs));
1365                 return true;
1366         }
1367 #endif
1368
1369         /* if no filters are configured, do nothing */
1370         if (!mvm->bcast_filters)
1371                 return false;
1372
1373         /* configure and attach these filters for each associated sta vif */
1374         ieee80211_iterate_active_interfaces(
1375                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1376                 iwl_mvm_bcast_filter_iterator, &iter_data);
1377
1378         return true;
1379 }
1380 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1381                                           struct ieee80211_vif *vif)
1382 {
1383         struct iwl_bcast_filter_cmd cmd;
1384
1385         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1386                 return 0;
1387
1388         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1389                 return 0;
1390
1391         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1392                                     sizeof(cmd), &cmd);
1393 }
1394 #else
1395 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1396                                                  struct ieee80211_vif *vif)
1397 {
1398         return 0;
1399 }
1400 #endif
1401
1402 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1403                                              struct ieee80211_vif *vif,
1404                                              struct ieee80211_bss_conf *bss_conf,
1405                                              u32 changes)
1406 {
1407         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1408         int ret;
1409
1410         /*
1411          * Re-calculate the tsf id, as the master-slave relations depend on the
1412          * beacon interval, which was not known when the station interface was
1413          * added.
1414          */
1415         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1416                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1417
1418         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
1419         if (ret)
1420                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1421
1422         if (changes & BSS_CHANGED_ASSOC) {
1423                 if (bss_conf->assoc) {
1424                         /* add quota for this interface */
1425                         ret = iwl_mvm_update_quotas(mvm, NULL);
1426                         if (ret) {
1427                                 IWL_ERR(mvm, "failed to update quotas\n");
1428                                 return;
1429                         }
1430
1431                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1432                                      &mvm->status)) {
1433                                 /*
1434                                  * If we're restarting then the firmware will
1435                                  * obviously have lost synchronisation with
1436                                  * the AP. It will attempt to synchronise by
1437                                  * itself, but we can make it more reliable by
1438                                  * scheduling a session protection time event.
1439                                  *
1440                                  * The firmware needs to receive a beacon to
1441                                  * catch up with synchronisation, use 110% of
1442                                  * the beacon interval.
1443                                  *
1444                                  * Set a large maximum delay to allow for more
1445                                  * than a single interface.
1446                                  */
1447                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1448                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1449                                                         5 * dur);
1450                         }
1451
1452                         iwl_mvm_sf_update(mvm, vif, false);
1453                         iwl_mvm_power_vif_assoc(mvm, vif);
1454                         if (vif->p2p)
1455                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1456                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1457                         /*
1458                          * If update fails - SF might be running in associated
1459                          * mode while disassociated - which is forbidden.
1460                          */
1461                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1462                                   "Failed to update SF upon disassociation\n");
1463
1464                         /* remove AP station now that the MAC is unassoc */
1465                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1466                         if (ret)
1467                                 IWL_ERR(mvm, "failed to remove AP station\n");
1468
1469                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1470                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1471                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1472                         /* remove quota for this interface */
1473                         ret = iwl_mvm_update_quotas(mvm, NULL);
1474                         if (ret)
1475                                 IWL_ERR(mvm, "failed to update quotas\n");
1476
1477                         if (vif->p2p)
1478                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1479                 }
1480
1481                 iwl_mvm_recalc_multicast(mvm);
1482                 iwl_mvm_configure_bcast_filter(mvm, vif);
1483
1484                 /* reset rssi values */
1485                 mvmvif->bf_data.ave_beacon_signal = 0;
1486
1487                 iwl_mvm_bt_coex_vif_change(mvm);
1488                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1489                                     IEEE80211_SMPS_AUTOMATIC);
1490         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1491                 /*
1492                  * We received a beacon _after_ association so
1493                  * remove the session protection.
1494                  */
1495                 iwl_mvm_remove_time_event(mvm, mvmvif,
1496                                           &mvmvif->time_event_data);
1497                 iwl_mvm_sf_update(mvm, vif, false);
1498                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1499         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1500                               BSS_CHANGED_QOS)) {
1501                 ret = iwl_mvm_power_update_mac(mvm);
1502                 if (ret)
1503                         IWL_ERR(mvm, "failed to update power mode\n");
1504         }
1505         if (changes & BSS_CHANGED_TXPOWER) {
1506                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1507                                 bss_conf->txpower);
1508                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1509         }
1510
1511         if (changes & BSS_CHANGED_CQM) {
1512                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
1513                 /* reset cqm events tracking */
1514                 mvmvif->bf_data.last_cqm_event = 0;
1515                 if (mvmvif->bf_data.bf_enabled) {
1516                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1517                         if (ret)
1518                                 IWL_ERR(mvm,
1519                                         "failed to update CQM thresholds\n");
1520                 }
1521         }
1522
1523         if (changes & BSS_CHANGED_ARP_FILTER) {
1524                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
1525                 iwl_mvm_configure_bcast_filter(mvm, vif);
1526         }
1527 }
1528
1529 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1530                                  struct ieee80211_vif *vif)
1531 {
1532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1533         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1534         int ret;
1535
1536         mutex_lock(&mvm->mutex);
1537
1538         /* Send the beacon template */
1539         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1540         if (ret)
1541                 goto out_unlock;
1542
1543         /*
1544          * Re-calculate the tsf id, as the master-slave relations depend on the
1545          * beacon interval, which was not known when the AP interface was added.
1546          */
1547         if (vif->type == NL80211_IFTYPE_AP)
1548                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1549
1550         /* Add the mac context */
1551         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1552         if (ret)
1553                 goto out_unlock;
1554
1555         /* Perform the binding */
1556         ret = iwl_mvm_binding_add_vif(mvm, vif);
1557         if (ret)
1558                 goto out_remove;
1559
1560         /* Send the bcast station. At this stage the TBTT and DTIM time events
1561          * are added and applied to the scheduler */
1562         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1563         if (ret)
1564                 goto out_unbind;
1565
1566         /* must be set before quota calculations */
1567         mvmvif->ap_ibss_active = true;
1568
1569         /* power updated needs to be done before quotas */
1570         iwl_mvm_power_update_mac(mvm);
1571
1572         ret = iwl_mvm_update_quotas(mvm, NULL);
1573         if (ret)
1574                 goto out_quota_failed;
1575
1576         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1577         if (vif->p2p && mvm->p2p_device_vif)
1578                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1579
1580         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1581
1582         iwl_mvm_bt_coex_vif_change(mvm);
1583
1584         mutex_unlock(&mvm->mutex);
1585         return 0;
1586
1587 out_quota_failed:
1588         iwl_mvm_power_update_mac(mvm);
1589         mvmvif->ap_ibss_active = false;
1590         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1591 out_unbind:
1592         iwl_mvm_binding_remove_vif(mvm, vif);
1593 out_remove:
1594         iwl_mvm_mac_ctxt_remove(mvm, vif);
1595 out_unlock:
1596         mutex_unlock(&mvm->mutex);
1597         return ret;
1598 }
1599
1600 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1601                                  struct ieee80211_vif *vif)
1602 {
1603         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1604         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1605
1606         iwl_mvm_prepare_mac_removal(mvm, vif);
1607
1608         mutex_lock(&mvm->mutex);
1609
1610         /* Handle AP stop while in CSA */
1611         if (rcu_access_pointer(mvm->csa_vif) == vif) {
1612                 iwl_mvm_remove_time_event(mvm, mvmvif,
1613                                           &mvmvif->time_event_data);
1614                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
1615         }
1616
1617         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1618                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1619                 mvm->csa_tx_block_bcn_timeout = 0;
1620         }
1621
1622         mvmvif->ap_ibss_active = false;
1623         mvm->ap_last_beacon_gp2 = 0;
1624
1625         iwl_mvm_bt_coex_vif_change(mvm);
1626
1627         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1628
1629         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1630         if (vif->p2p && mvm->p2p_device_vif)
1631                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
1632
1633         iwl_mvm_update_quotas(mvm, NULL);
1634         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1635         iwl_mvm_binding_remove_vif(mvm, vif);
1636
1637         iwl_mvm_power_update_mac(mvm);
1638
1639         iwl_mvm_mac_ctxt_remove(mvm, vif);
1640
1641         mutex_unlock(&mvm->mutex);
1642 }
1643
1644 static void
1645 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1646                                  struct ieee80211_vif *vif,
1647                                  struct ieee80211_bss_conf *bss_conf,
1648                                  u32 changes)
1649 {
1650         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1651
1652         /* Changes will be applied when the AP/IBSS is started */
1653         if (!mvmvif->ap_ibss_active)
1654                 return;
1655
1656         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1657                        BSS_CHANGED_BANDWIDTH) &&
1658             iwl_mvm_mac_ctxt_changed(mvm, vif, false))
1659                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1660
1661         /* Need to send a new beacon template to the FW */
1662         if (changes & BSS_CHANGED_BEACON &&
1663             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1664                 IWL_WARN(mvm, "Failed updating beacon data\n");
1665 }
1666
1667 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1668                                      struct ieee80211_vif *vif,
1669                                      struct ieee80211_bss_conf *bss_conf,
1670                                      u32 changes)
1671 {
1672         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1673
1674         mutex_lock(&mvm->mutex);
1675
1676         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
1677                 iwl_mvm_scan_offload_stop(mvm, true);
1678
1679         switch (vif->type) {
1680         case NL80211_IFTYPE_STATION:
1681                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1682                 break;
1683         case NL80211_IFTYPE_AP:
1684         case NL80211_IFTYPE_ADHOC:
1685                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1686                 break;
1687         default:
1688                 /* shouldn't happen */
1689                 WARN_ON_ONCE(1);
1690         }
1691
1692         mutex_unlock(&mvm->mutex);
1693 }
1694
1695 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1696                                struct ieee80211_vif *vif,
1697                                struct ieee80211_scan_request *hw_req)
1698 {
1699         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1700         struct cfg80211_scan_request *req = &hw_req->req;
1701         int ret;
1702
1703         if (req->n_channels == 0 ||
1704             req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1705                 return -EINVAL;
1706
1707         mutex_lock(&mvm->mutex);
1708
1709         switch (mvm->scan_status) {
1710         case IWL_MVM_SCAN_SCHED:
1711                 ret = iwl_mvm_scan_offload_stop(mvm, true);
1712                 if (ret) {
1713                         ret = -EBUSY;
1714                         goto out;
1715                 }
1716                 break;
1717         case IWL_MVM_SCAN_NONE:
1718                 break;
1719         default:
1720                 ret = -EBUSY;
1721                 goto out;
1722         }
1723
1724         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1725
1726         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1727                 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1728         else
1729                 ret = iwl_mvm_scan_request(mvm, vif, req);
1730
1731         if (ret)
1732                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1733 out:
1734         mutex_unlock(&mvm->mutex);
1735         /* make sure to flush the Rx handler before the next scan arrives */
1736         iwl_mvm_wait_for_async_handlers(mvm);
1737         return ret;
1738 }
1739
1740 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1741                                        struct ieee80211_vif *vif)
1742 {
1743         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1744
1745         mutex_lock(&mvm->mutex);
1746
1747         iwl_mvm_cancel_scan(mvm);
1748
1749         mutex_unlock(&mvm->mutex);
1750 }
1751
1752 static void
1753 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1754                                   struct ieee80211_sta *sta, u16 tids,
1755                                   int num_frames,
1756                                   enum ieee80211_frame_release_type reason,
1757                                   bool more_data)
1758 {
1759         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1760
1761         /* Called when we need to transmit (a) frame(s) from mac80211 */
1762
1763         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1764                                           tids, more_data, false);
1765 }
1766
1767 static void
1768 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1769                                     struct ieee80211_sta *sta, u16 tids,
1770                                     int num_frames,
1771                                     enum ieee80211_frame_release_type reason,
1772                                     bool more_data)
1773 {
1774         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1775
1776         /* Called when we need to transmit (a) frame(s) from agg queue */
1777
1778         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1779                                           tids, more_data, true);
1780 }
1781
1782 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1783                                    struct ieee80211_vif *vif,
1784                                    enum sta_notify_cmd cmd,
1785                                    struct ieee80211_sta *sta)
1786 {
1787         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1788         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1789         int tid;
1790
1791         switch (cmd) {
1792         case STA_NOTIFY_SLEEP:
1793                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1794                         ieee80211_sta_block_awake(hw, sta, true);
1795                 spin_lock_bh(&mvmsta->lock);
1796                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1797                         struct iwl_mvm_tid_data *tid_data;
1798
1799                         tid_data = &mvmsta->tid_data[tid];
1800                         if (tid_data->state != IWL_AGG_ON &&
1801                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1802                                 continue;
1803                         if (iwl_mvm_tid_queued(tid_data) == 0)
1804                                 continue;
1805                         ieee80211_sta_set_buffered(sta, tid, true);
1806                 }
1807                 spin_unlock_bh(&mvmsta->lock);
1808                 /*
1809                  * The fw updates the STA to be asleep. Tx packets on the Tx
1810                  * queues to this station will not be transmitted. The fw will
1811                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1812                  */
1813                 break;
1814         case STA_NOTIFY_AWAKE:
1815                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1816                         break;
1817                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1818                 break;
1819         default:
1820                 break;
1821         }
1822 }
1823
1824 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1825                                        struct ieee80211_vif *vif,
1826                                        struct ieee80211_sta *sta)
1827 {
1828         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1829         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1830
1831         /*
1832          * This is called before mac80211 does RCU synchronisation,
1833          * so here we already invalidate our internal RCU-protected
1834          * station pointer. The rest of the code will thus no longer
1835          * be able to find the station this way, and we don't rely
1836          * on further RCU synchronisation after the sta_state()
1837          * callback deleted the station.
1838          */
1839         mutex_lock(&mvm->mutex);
1840         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1841                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1842                                    ERR_PTR(-ENOENT));
1843         mutex_unlock(&mvm->mutex);
1844 }
1845
1846 int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1847 {
1848         struct ieee80211_sta *sta;
1849         struct iwl_mvm_sta *mvmsta;
1850         int count = 0;
1851         int i;
1852
1853         lockdep_assert_held(&mvm->mutex);
1854
1855         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1856                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1857                                                 lockdep_is_held(&mvm->mutex));
1858                 if (!sta || IS_ERR(sta) || !sta->tdls)
1859                         continue;
1860
1861                 if (vif) {
1862                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
1863                         if (mvmsta->vif != vif)
1864                                 continue;
1865                 }
1866
1867                 count++;
1868         }
1869
1870         return count;
1871 }
1872
1873 static void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm,
1874                                       struct ieee80211_vif *vif,
1875                                       bool sta_added)
1876 {
1877         int tdls_sta_cnt = iwl_mvm_tdls_sta_count(mvm, vif);
1878
1879         /*
1880          * Disable ps when the first TDLS sta is added and re-enable it
1881          * when the last TDLS sta is removed
1882          */
1883         if ((tdls_sta_cnt == 1 && sta_added) ||
1884             (tdls_sta_cnt == 0 && !sta_added))
1885                 iwl_mvm_power_update_mac(mvm);
1886 }
1887
1888 static void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm)
1889 {
1890         struct ieee80211_sta *sta;
1891         struct iwl_mvm_sta *mvmsta;
1892         int i;
1893
1894         lockdep_assert_held(&mvm->mutex);
1895
1896         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1897                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1898                                                 lockdep_is_held(&mvm->mutex));
1899                 if (!sta || IS_ERR(sta) || !sta->tdls)
1900                         continue;
1901
1902                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1903                 ieee80211_tdls_oper_request(mvmsta->vif, sta->addr,
1904                                 NL80211_TDLS_TEARDOWN,
1905                                 WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED,
1906                                 GFP_KERNEL);
1907         }
1908 }
1909
1910 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1911                                  struct ieee80211_vif *vif,
1912                                  struct ieee80211_sta *sta,
1913                                  enum ieee80211_sta_state old_state,
1914                                  enum ieee80211_sta_state new_state)
1915 {
1916         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1917         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1918         int ret;
1919
1920         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1921                            sta->addr, old_state, new_state);
1922
1923         /* this would be a mac80211 bug ... but don't crash */
1924         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1925                 return -EINVAL;
1926
1927         /* if a STA is being removed, reuse its ID */
1928         flush_work(&mvm->sta_drained_wk);
1929
1930         mutex_lock(&mvm->mutex);
1931         if (old_state == IEEE80211_STA_NOTEXIST &&
1932             new_state == IEEE80211_STA_NONE) {
1933                 /*
1934                  * Firmware bug - it'll crash if the beacon interval is less
1935                  * than 16. We can't avoid connecting at all, so refuse the
1936                  * station state change, this will cause mac80211 to abandon
1937                  * attempts to connect to this AP, and eventually wpa_s will
1938                  * blacklist the AP...
1939                  */
1940                 if (vif->type == NL80211_IFTYPE_STATION &&
1941                     vif->bss_conf.beacon_int < 16) {
1942                         IWL_ERR(mvm,
1943                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1944                                 sta->addr, vif->bss_conf.beacon_int);
1945                         ret = -EINVAL;
1946                         goto out_unlock;
1947                 }
1948
1949                 if (sta->tdls &&
1950                     (vif->p2p ||
1951                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
1952                                                 IWL_MVM_TDLS_STA_COUNT ||
1953                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
1954                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
1955                         ret = -EBUSY;
1956                         goto out_unlock;
1957                 }
1958
1959                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1960                 if (sta->tdls && ret == 0)
1961                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
1962         } else if (old_state == IEEE80211_STA_NONE &&
1963                    new_state == IEEE80211_STA_AUTH) {
1964                 /*
1965                  * EBS may be disabled due to previous failures reported by FW.
1966                  * Reset EBS status here assuming environment has been changed.
1967                  */
1968                 mvm->last_ebs_successful = true;
1969                 ret = 0;
1970         } else if (old_state == IEEE80211_STA_AUTH &&
1971                    new_state == IEEE80211_STA_ASSOC) {
1972                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1973                 if (ret == 0)
1974                         iwl_mvm_rs_rate_init(mvm, sta,
1975                                              mvmvif->phy_ctxt->channel->band,
1976                                              true);
1977         } else if (old_state == IEEE80211_STA_ASSOC &&
1978                    new_state == IEEE80211_STA_AUTHORIZED) {
1979
1980                 /* we don't support TDLS during DCM */
1981                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
1982                         iwl_mvm_teardown_tdls_peers(mvm);
1983
1984                 /* enable beacon filtering */
1985                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
1986                 ret = 0;
1987         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1988                    new_state == IEEE80211_STA_ASSOC) {
1989                 /* disable beacon filtering */
1990                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
1991                 ret = 0;
1992         } else if (old_state == IEEE80211_STA_ASSOC &&
1993                    new_state == IEEE80211_STA_AUTH) {
1994                 ret = 0;
1995         } else if (old_state == IEEE80211_STA_AUTH &&
1996                    new_state == IEEE80211_STA_NONE) {
1997                 ret = 0;
1998         } else if (old_state == IEEE80211_STA_NONE &&
1999                    new_state == IEEE80211_STA_NOTEXIST) {
2000                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2001                 if (sta->tdls)
2002                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2003         } else {
2004                 ret = -EIO;
2005         }
2006  out_unlock:
2007         mutex_unlock(&mvm->mutex);
2008
2009         return ret;
2010 }
2011
2012 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2013 {
2014         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2015
2016         mvm->rts_threshold = value;
2017
2018         return 0;
2019 }
2020
2021 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2022                                   struct ieee80211_vif *vif,
2023                                   struct ieee80211_sta *sta, u32 changed)
2024 {
2025         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2026
2027         if (vif->type == NL80211_IFTYPE_STATION &&
2028             changed & IEEE80211_RC_NSS_CHANGED)
2029                 iwl_mvm_sf_update(mvm, vif, false);
2030 }
2031
2032 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2033                                struct ieee80211_vif *vif, u16 ac,
2034                                const struct ieee80211_tx_queue_params *params)
2035 {
2036         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2037         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2038
2039         mvmvif->queue_params[ac] = *params;
2040
2041         /*
2042          * No need to update right away, we'll get BSS_CHANGED_QOS
2043          * The exception is P2P_DEVICE interface which needs immediate update.
2044          */
2045         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2046                 int ret;
2047
2048                 mutex_lock(&mvm->mutex);
2049                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2050                 mutex_unlock(&mvm->mutex);
2051                 return ret;
2052         }
2053         return 0;
2054 }
2055
2056 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2057                                       struct ieee80211_vif *vif)
2058 {
2059         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2060         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2061                            200 + vif->bss_conf.beacon_int);
2062         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2063                                100 + vif->bss_conf.beacon_int);
2064
2065         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2066                 return;
2067
2068         mutex_lock(&mvm->mutex);
2069         /* Try really hard to protect the session and hear a beacon */
2070         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
2071         mutex_unlock(&mvm->mutex);
2072 }
2073
2074 static void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
2075                                                   struct ieee80211_vif *vif)
2076 {
2077         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2078         u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
2079
2080         mutex_lock(&mvm->mutex);
2081         /* Protect the session to hear the TDLS setup response on the channel */
2082         iwl_mvm_protect_session(mvm, vif, duration, duration, 100);
2083         mutex_unlock(&mvm->mutex);
2084 }
2085
2086 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2087                                         struct ieee80211_vif *vif,
2088                                         struct cfg80211_sched_scan_request *req,
2089                                         struct ieee80211_scan_ies *ies)
2090 {
2091         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2092         int ret;
2093
2094         mutex_lock(&mvm->mutex);
2095
2096         if (!iwl_mvm_is_idle(mvm)) {
2097                 ret = -EBUSY;
2098                 goto out;
2099         }
2100
2101         switch (mvm->scan_status) {
2102         case IWL_MVM_SCAN_OS:
2103                 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
2104                 ret = iwl_mvm_cancel_scan(mvm);
2105                 if (ret) {
2106                         ret = -EBUSY;
2107                         goto out;
2108                 }
2109
2110                 /*
2111                  * iwl_mvm_rx_scan_complete() will be called soon but will
2112                  * not reset the scan status as it won't be IWL_MVM_SCAN_OS
2113                  * any more since we queue the next scan immediately (below).
2114                  * We make sure it is called before the next scan starts by
2115                  * flushing the async-handlers work.
2116                  */
2117                 break;
2118         case IWL_MVM_SCAN_NONE:
2119                 break;
2120         default:
2121                 ret = -EBUSY;
2122                 goto out;
2123         }
2124
2125         mvm->scan_status = IWL_MVM_SCAN_SCHED;
2126
2127         if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2128                 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2129                 if (ret)
2130                         goto err;
2131         }
2132
2133         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2134         if (ret)
2135                 goto err;
2136
2137         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2138                 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2139         else
2140                 ret = iwl_mvm_sched_scan_start(mvm, req);
2141
2142         if (!ret)
2143                 goto out;
2144 err:
2145         mvm->scan_status = IWL_MVM_SCAN_NONE;
2146 out:
2147         mutex_unlock(&mvm->mutex);
2148         /* make sure to flush the Rx handler before the next scan arrives */
2149         iwl_mvm_wait_for_async_handlers(mvm);
2150         return ret;
2151 }
2152
2153 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2154                                        struct ieee80211_vif *vif)
2155 {
2156         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2157         int ret;
2158
2159         mutex_lock(&mvm->mutex);
2160         ret = iwl_mvm_scan_offload_stop(mvm, false);
2161         mutex_unlock(&mvm->mutex);
2162         iwl_mvm_wait_for_async_handlers(mvm);
2163
2164         return ret;
2165 }
2166
2167 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2168                                enum set_key_cmd cmd,
2169                                struct ieee80211_vif *vif,
2170                                struct ieee80211_sta *sta,
2171                                struct ieee80211_key_conf *key)
2172 {
2173         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2174         int ret;
2175
2176         if (iwlwifi_mod_params.sw_crypto) {
2177                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2178                 return -EOPNOTSUPP;
2179         }
2180
2181         switch (key->cipher) {
2182         case WLAN_CIPHER_SUITE_TKIP:
2183                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2184                 /* fall-through */
2185         case WLAN_CIPHER_SUITE_CCMP:
2186                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2187                 break;
2188         case WLAN_CIPHER_SUITE_AES_CMAC:
2189                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2190                 break;
2191         case WLAN_CIPHER_SUITE_WEP40:
2192         case WLAN_CIPHER_SUITE_WEP104:
2193                 /*
2194                  * Support for TX only, at least for now, so accept
2195                  * the key and do nothing else. Then mac80211 will
2196                  * pass it for TX but we don't have to use it for RX.
2197                  */
2198                 return 0;
2199         default:
2200                 /* currently FW supports only one optional cipher scheme */
2201                 if (hw->n_cipher_schemes &&
2202                     hw->cipher_schemes->cipher == key->cipher)
2203                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2204                 else
2205                         return -EOPNOTSUPP;
2206         }
2207
2208         mutex_lock(&mvm->mutex);
2209
2210         switch (cmd) {
2211         case SET_KEY:
2212                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2213                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2214                         /*
2215                          * GTK on AP interface is a TX-only key, return 0;
2216                          * on IBSS they're per-station and because we're lazy
2217                          * we don't support them for RX, so do the same.
2218                          */
2219                         ret = 0;
2220                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2221                         break;
2222                 }
2223
2224                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2225                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2226                 if (ret) {
2227                         IWL_WARN(mvm, "set key failed\n");
2228                         /*
2229                          * can't add key for RX, but we don't need it
2230                          * in the device for TX so still return 0
2231                          */
2232                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2233                         ret = 0;
2234                 }
2235
2236                 break;
2237         case DISABLE_KEY:
2238                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2239                         ret = 0;
2240                         break;
2241                 }
2242
2243                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2244                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2245                 break;
2246         default:
2247                 ret = -EINVAL;
2248         }
2249
2250         mutex_unlock(&mvm->mutex);
2251         return ret;
2252 }
2253
2254 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2255                                         struct ieee80211_vif *vif,
2256                                         struct ieee80211_key_conf *keyconf,
2257                                         struct ieee80211_sta *sta,
2258                                         u32 iv32, u16 *phase1key)
2259 {
2260         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2261
2262         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2263                 return;
2264
2265         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2266 }
2267
2268
2269 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2270                        struct ieee80211_vif *vif,
2271                        struct ieee80211_channel *channel,
2272                        int duration,
2273                        enum ieee80211_roc_type type)
2274 {
2275         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2276         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2277         struct cfg80211_chan_def chandef;
2278         struct iwl_mvm_phy_ctxt *phy_ctxt;
2279         int ret, i;
2280
2281         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2282                            duration, type);
2283
2284         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
2285                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
2286                 return -EINVAL;
2287         }
2288
2289         mutex_lock(&mvm->mutex);
2290
2291         for (i = 0; i < NUM_PHY_CTX; i++) {
2292                 phy_ctxt = &mvm->phy_ctxts[i];
2293                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2294                         continue;
2295
2296                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2297                         /*
2298                          * Unbind the P2P_DEVICE from the current PHY context,
2299                          * and if the PHY context is not used remove it.
2300                          */
2301                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2302                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2303                                 goto out_unlock;
2304
2305                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2306
2307                         /* Bind the P2P_DEVICE to the current PHY Context */
2308                         mvmvif->phy_ctxt = phy_ctxt;
2309
2310                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2311                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2312                                 goto out_unlock;
2313
2314                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2315                         goto schedule_time_event;
2316                 }
2317         }
2318
2319         /* Need to update the PHY context only if the ROC channel changed */
2320         if (channel == mvmvif->phy_ctxt->channel)
2321                 goto schedule_time_event;
2322
2323         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2324
2325         /*
2326          * Change the PHY context configuration as it is currently referenced
2327          * only by the P2P Device MAC
2328          */
2329         if (mvmvif->phy_ctxt->ref == 1) {
2330                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2331                                                &chandef, 1, 1);
2332                 if (ret)
2333                         goto out_unlock;
2334         } else {
2335                 /*
2336                  * The PHY context is shared with other MACs. Need to remove the
2337                  * P2P Device from the binding, allocate an new PHY context and
2338                  * create a new binding
2339                  */
2340                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2341                 if (!phy_ctxt) {
2342                         ret = -ENOSPC;
2343                         goto out_unlock;
2344                 }
2345
2346                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2347                                                1, 1);
2348                 if (ret) {
2349                         IWL_ERR(mvm, "Failed to change PHY context\n");
2350                         goto out_unlock;
2351                 }
2352
2353                 /* Unbind the P2P_DEVICE from the current PHY context */
2354                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2355                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2356                         goto out_unlock;
2357
2358                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2359
2360                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2361                 mvmvif->phy_ctxt = phy_ctxt;
2362
2363                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2364                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2365                         goto out_unlock;
2366
2367                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2368         }
2369
2370 schedule_time_event:
2371         /* Schedule the time events */
2372         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2373
2374 out_unlock:
2375         mutex_unlock(&mvm->mutex);
2376         IWL_DEBUG_MAC80211(mvm, "leave\n");
2377         return ret;
2378 }
2379
2380 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2381 {
2382         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2383
2384         IWL_DEBUG_MAC80211(mvm, "enter\n");
2385
2386         mutex_lock(&mvm->mutex);
2387         iwl_mvm_stop_p2p_roc(mvm);
2388         mutex_unlock(&mvm->mutex);
2389
2390         IWL_DEBUG_MAC80211(mvm, "leave\n");
2391         return 0;
2392 }
2393
2394 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2395                                  struct ieee80211_chanctx_conf *ctx)
2396 {
2397         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2398         struct iwl_mvm_phy_ctxt *phy_ctxt;
2399         int ret;
2400
2401         lockdep_assert_held(&mvm->mutex);
2402
2403         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2404
2405         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2406         if (!phy_ctxt) {
2407                 ret = -ENOSPC;
2408                 goto out;
2409         }
2410
2411         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2412                                        ctx->rx_chains_static,
2413                                        ctx->rx_chains_dynamic);
2414         if (ret) {
2415                 IWL_ERR(mvm, "Failed to add PHY context\n");
2416                 goto out;
2417         }
2418
2419         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2420         *phy_ctxt_id = phy_ctxt->id;
2421 out:
2422         return ret;
2423 }
2424
2425 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2426                                struct ieee80211_chanctx_conf *ctx)
2427 {
2428         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2429         int ret;
2430
2431         mutex_lock(&mvm->mutex);
2432         ret = __iwl_mvm_add_chanctx(mvm, ctx);
2433         mutex_unlock(&mvm->mutex);
2434
2435         return ret;
2436 }
2437
2438 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2439                                      struct ieee80211_chanctx_conf *ctx)
2440 {
2441         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2442         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2443
2444         lockdep_assert_held(&mvm->mutex);
2445
2446         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2447 }
2448
2449 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2450                                    struct ieee80211_chanctx_conf *ctx)
2451 {
2452         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2453
2454         mutex_lock(&mvm->mutex);
2455         __iwl_mvm_remove_chanctx(mvm, ctx);
2456         mutex_unlock(&mvm->mutex);
2457 }
2458
2459 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2460                                    struct ieee80211_chanctx_conf *ctx,
2461                                    u32 changed)
2462 {
2463         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2464         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2465         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2466
2467         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2468                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2469                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2470                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2471                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2472                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2473                       phy_ctxt->ref, changed))
2474                 return;
2475
2476         mutex_lock(&mvm->mutex);
2477         iwl_mvm_bt_coex_vif_change(mvm);
2478         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2479                                  ctx->rx_chains_static,
2480                                  ctx->rx_chains_dynamic);
2481         mutex_unlock(&mvm->mutex);
2482 }
2483
2484 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2485                                         struct ieee80211_vif *vif,
2486                                         struct ieee80211_chanctx_conf *ctx,
2487                                         bool switching_chanctx)
2488 {
2489         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2490         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2491         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2492         int ret;
2493
2494         lockdep_assert_held(&mvm->mutex);
2495
2496         mvmvif->phy_ctxt = phy_ctxt;
2497
2498         switch (vif->type) {
2499         case NL80211_IFTYPE_AP:
2500                 /* Unless it's a CSA flow we have nothing to do here */
2501                 if (vif->csa_active) {
2502                         mvmvif->ap_ibss_active = true;
2503                         break;
2504                 }
2505         case NL80211_IFTYPE_ADHOC:
2506                 /*
2507                  * The AP binding flow is handled as part of the start_ap flow
2508                  * (in bss_info_changed), similarly for IBSS.
2509                  */
2510                 ret = 0;
2511                 goto out;
2512         case NL80211_IFTYPE_STATION:
2513         case NL80211_IFTYPE_MONITOR:
2514                 break;
2515         default:
2516                 ret = -EINVAL;
2517                 goto out;
2518         }
2519
2520         ret = iwl_mvm_binding_add_vif(mvm, vif);
2521         if (ret)
2522                 goto out;
2523
2524         /*
2525          * Power state must be updated before quotas,
2526          * otherwise fw will complain.
2527          */
2528         iwl_mvm_power_update_mac(mvm);
2529
2530         /* Setting the quota at this stage is only required for monitor
2531          * interfaces. For the other types, the bss_info changed flow
2532          * will handle quota settings.
2533          */
2534         if (vif->type == NL80211_IFTYPE_MONITOR) {
2535                 mvmvif->monitor_active = true;
2536                 ret = iwl_mvm_update_quotas(mvm, NULL);
2537                 if (ret)
2538                         goto out_remove_binding;
2539         }
2540
2541         /* Handle binding during CSA */
2542         if ((vif->type == NL80211_IFTYPE_AP) ||
2543             (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
2544                 iwl_mvm_update_quotas(mvm, NULL);
2545                 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
2546         }
2547
2548         goto out;
2549
2550 out_remove_binding:
2551         iwl_mvm_binding_remove_vif(mvm, vif);
2552         iwl_mvm_power_update_mac(mvm);
2553 out:
2554         if (ret)
2555                 mvmvif->phy_ctxt = NULL;
2556         return ret;
2557 }
2558 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2559                                       struct ieee80211_vif *vif,
2560                                       struct ieee80211_chanctx_conf *ctx)
2561 {
2562         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2563         int ret;
2564
2565         mutex_lock(&mvm->mutex);
2566         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
2567         mutex_unlock(&mvm->mutex);
2568
2569         return ret;
2570 }
2571
2572 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2573                                            struct ieee80211_vif *vif,
2574                                            struct ieee80211_chanctx_conf *ctx,
2575                                            bool switching_chanctx)
2576 {
2577         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2578         struct ieee80211_vif *disabled_vif = NULL;
2579
2580         lockdep_assert_held(&mvm->mutex);
2581
2582         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2583
2584         switch (vif->type) {
2585         case NL80211_IFTYPE_ADHOC:
2586                 goto out;
2587         case NL80211_IFTYPE_MONITOR:
2588                 mvmvif->monitor_active = false;
2589                 break;
2590         case NL80211_IFTYPE_AP:
2591                 /* This part is triggered only during CSA */
2592                 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2593                         goto out;
2594
2595                 /* Set CS bit on all the stations */
2596                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2597
2598                 /* Save blocked iface, the timeout is set on the next beacon */
2599                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2600
2601                 mvmvif->ap_ibss_active = false;
2602                 break;
2603         case NL80211_IFTYPE_STATION:
2604                 if (!switching_chanctx)
2605                         break;
2606
2607                 disabled_vif = vif;
2608
2609                 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2610                 break;
2611         default:
2612                 break;
2613         }
2614
2615         iwl_mvm_update_quotas(mvm, disabled_vif);
2616         iwl_mvm_binding_remove_vif(mvm, vif);
2617
2618 out:
2619         mvmvif->phy_ctxt = NULL;
2620         iwl_mvm_power_update_mac(mvm);
2621 }
2622
2623 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2624                                          struct ieee80211_vif *vif,
2625                                          struct ieee80211_chanctx_conf *ctx)
2626 {
2627         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2628
2629         mutex_lock(&mvm->mutex);
2630         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
2631         mutex_unlock(&mvm->mutex);
2632 }
2633
2634 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2635                                       struct ieee80211_vif_chanctx_switch *vifs,
2636                                       int n_vifs,
2637                                       enum ieee80211_chanctx_switch_mode mode)
2638 {
2639         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2640         int ret;
2641
2642         /* we only support SWAP_CONTEXTS and with a single-vif right now */
2643         if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2644                 return -EOPNOTSUPP;
2645
2646         mutex_lock(&mvm->mutex);
2647         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
2648         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2649
2650         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2651         if (ret) {
2652                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2653                 goto out_reassign;
2654         }
2655
2656         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2657                                            true);
2658         if (ret) {
2659                 IWL_ERR(mvm,
2660                         "failed to assign new_ctx during channel switch\n");
2661                 goto out_remove;
2662         }
2663
2664         goto out;
2665
2666 out_remove:
2667         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2668
2669 out_reassign:
2670         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2671         if (ret) {
2672                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2673                 goto out_restart;
2674         }
2675
2676         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2677                                            true);
2678         if (ret) {
2679                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2680                 goto out_restart;
2681         }
2682
2683         goto out;
2684
2685 out_restart:
2686         /* things keep failing, better restart the hw */
2687         iwl_mvm_nic_restart(mvm, false);
2688
2689 out:
2690         mutex_unlock(&mvm->mutex);
2691         return ret;
2692 }
2693
2694 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2695                            struct ieee80211_sta *sta,
2696                            bool set)
2697 {
2698         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2699         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2700
2701         if (!mvm_sta || !mvm_sta->vif) {
2702                 IWL_ERR(mvm, "Station is not associated to a vif\n");
2703                 return -EINVAL;
2704         }
2705
2706         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2707 }
2708
2709 #ifdef CONFIG_NL80211_TESTMODE
2710 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2711         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2712         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2713         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2714 };
2715
2716 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2717                                       struct ieee80211_vif *vif,
2718                                       void *data, int len)
2719 {
2720         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2721         int err;
2722         u32 noa_duration;
2723
2724         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2725         if (err)
2726                 return err;
2727
2728         if (!tb[IWL_MVM_TM_ATTR_CMD])
2729                 return -EINVAL;
2730
2731         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2732         case IWL_MVM_TM_CMD_SET_NOA:
2733                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2734                     !vif->bss_conf.enable_beacon ||
2735                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2736                         return -EINVAL;
2737
2738                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2739                 if (noa_duration >= vif->bss_conf.beacon_int)
2740                         return -EINVAL;
2741
2742                 mvm->noa_duration = noa_duration;
2743                 mvm->noa_vif = vif;
2744
2745                 return iwl_mvm_update_quotas(mvm, NULL);
2746         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2747                 /* must be associated client vif - ignore authorized */
2748                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2749                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2750                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2751                         return -EINVAL;
2752
2753                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2754                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2755                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
2756         }
2757
2758         return -EOPNOTSUPP;
2759 }
2760
2761 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2762                                     struct ieee80211_vif *vif,
2763                                     void *data, int len)
2764 {
2765         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2766         int err;
2767
2768         mutex_lock(&mvm->mutex);
2769         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2770         mutex_unlock(&mvm->mutex);
2771
2772         return err;
2773 }
2774 #endif
2775
2776 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2777                                           struct ieee80211_vif *vif,
2778                                           struct cfg80211_chan_def *chandef)
2779 {
2780         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2781         struct ieee80211_vif *csa_vif;
2782
2783         mutex_lock(&mvm->mutex);
2784
2785         csa_vif = rcu_dereference_protected(mvm->csa_vif,
2786                                             lockdep_is_held(&mvm->mutex));
2787         if (WARN(csa_vif && csa_vif->csa_active,
2788                  "Another CSA is already in progress"))
2789                 goto out_unlock;
2790
2791         IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2792                            chandef->center_freq1);
2793         rcu_assign_pointer(mvm->csa_vif, vif);
2794
2795 out_unlock:
2796         mutex_unlock(&mvm->mutex);
2797 }
2798
2799 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2800                               struct ieee80211_vif *vif, u32 queues, bool drop)
2801 {
2802         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2803         struct iwl_mvm_vif *mvmvif;
2804         struct iwl_mvm_sta *mvmsta;
2805
2806         if (!vif || vif->type != NL80211_IFTYPE_STATION)
2807                 return;
2808
2809         mutex_lock(&mvm->mutex);
2810         mvmvif = iwl_mvm_vif_from_mac80211(vif);
2811         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2812
2813         if (WARN_ON_ONCE(!mvmsta))
2814                 goto done;
2815
2816         if (drop) {
2817                 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2818                         IWL_ERR(mvm, "flush request fail\n");
2819         } else {
2820                 iwl_trans_wait_tx_queue_empty(mvm->trans,
2821                                               mvmsta->tfd_queue_msk);
2822         }
2823 done:
2824         mutex_unlock(&mvm->mutex);
2825 }
2826
2827 const struct ieee80211_ops iwl_mvm_hw_ops = {
2828         .tx = iwl_mvm_mac_tx,
2829         .ampdu_action = iwl_mvm_mac_ampdu_action,
2830         .start = iwl_mvm_mac_start,
2831         .restart_complete = iwl_mvm_mac_restart_complete,
2832         .stop = iwl_mvm_mac_stop,
2833         .add_interface = iwl_mvm_mac_add_interface,
2834         .remove_interface = iwl_mvm_mac_remove_interface,
2835         .config = iwl_mvm_mac_config,
2836         .prepare_multicast = iwl_mvm_prepare_multicast,
2837         .configure_filter = iwl_mvm_configure_filter,
2838         .bss_info_changed = iwl_mvm_bss_info_changed,
2839         .hw_scan = iwl_mvm_mac_hw_scan,
2840         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
2841         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
2842         .sta_state = iwl_mvm_mac_sta_state,
2843         .sta_notify = iwl_mvm_mac_sta_notify,
2844         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
2845         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
2846         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
2847         .sta_rc_update = iwl_mvm_sta_rc_update,
2848         .conf_tx = iwl_mvm_mac_conf_tx,
2849         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
2850         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
2851         .flush = iwl_mvm_mac_flush,
2852         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2853         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
2854         .set_key = iwl_mvm_mac_set_key,
2855         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2856         .remain_on_channel = iwl_mvm_roc,
2857         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2858         .add_chanctx = iwl_mvm_add_chanctx,
2859         .remove_chanctx = iwl_mvm_remove_chanctx,
2860         .change_chanctx = iwl_mvm_change_chanctx,
2861         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2862         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
2863         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
2864
2865         .start_ap = iwl_mvm_start_ap_ibss,
2866         .stop_ap = iwl_mvm_stop_ap_ibss,
2867         .join_ibss = iwl_mvm_start_ap_ibss,
2868         .leave_ibss = iwl_mvm_stop_ap_ibss,
2869
2870         .set_tim = iwl_mvm_set_tim,
2871
2872         .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
2873
2874         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2875
2876 #ifdef CONFIG_PM_SLEEP
2877         /* look at d3.c */
2878         .suspend = iwl_mvm_suspend,
2879         .resume = iwl_mvm_resume,
2880         .set_wakeup = iwl_mvm_set_wakeup,
2881         .set_rekey_data = iwl_mvm_set_rekey_data,
2882 #if IS_ENABLED(CONFIG_IPV6)
2883         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2884 #endif
2885         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2886 #endif
2887 };