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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
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  20  * along with this program; if not, write to the Free Software
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  32  *
  33  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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  44  *    the documentation and/or other materials provided with the
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  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <linux/if_arp.h>
  70 #include <net/mac80211.h>
  71 #include <net/ieee80211_radiotap.h>
  72 #include <net/tcp.h>
  73
  74 #include "iwl-op-mode.h"
  75 #include "iwl-io.h"
  76 #include "mvm.h"
  77 #include "sta.h"
  78 #include "time-event.h"
  79 #include "iwl-eeprom-parse.h"
  80 #include "fw-api-scan.h"
  81 #include "iwl-phy-db.h"
  82 #include "testmode.h"
  83
  84 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  85         {
  86                 .max = 1,
  87                 .types = BIT(NL80211_IFTYPE_STATION),
  88         },
  89         {
  90                 .max = 1,
  91                 .types = BIT(NL80211_IFTYPE_AP) |
  92                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  93                         BIT(NL80211_IFTYPE_P2P_GO),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  98         },
  99 };
 100
 101 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 102         {
 103                 .num_different_channels = 1,
 104                 .max_interfaces = 3,
 105                 .limits = iwl_mvm_limits,
 106                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 107         },
 108 };
 109
 110 #ifdef CONFIG_PM_SLEEP
 111 static const struct nl80211_wowlan_tcp_data_token_feature
 112 iwl_mvm_wowlan_tcp_token_feature = {
 113         .min_len = 0,
 114         .max_len = 255,
 115         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 116 };
 117
 118 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 119         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 120         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 121                             sizeof(struct ethhdr) -
 122                             sizeof(struct iphdr) -
 123                             sizeof(struct tcphdr),
 124         .data_interval_max = 65535, /* __le16 in API */
 125         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 126                             sizeof(struct ethhdr) -
 127                             sizeof(struct iphdr) -
 128                             sizeof(struct tcphdr),
 129         .seq = true,
 130 };
 131 #endif
 132
 133 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 134 /*
 135  * Use the reserved field to indicate magic values.
 136  * these values will only be used internally by the driver,
 137  * and won't make it to the fw (reserved will be 0).
 138  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 139  *      be the vif's ip address. in case there is not a single
 140  *      ip address (0, or more than 1), this attribute will
 141  *      be skipped.
 142  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 143  *      the LSB bytes of the vif's mac address
 144  */
 145 enum {
 146         BC_FILTER_MAGIC_NONE = 0,
 147         BC_FILTER_MAGIC_IP,
 148         BC_FILTER_MAGIC_MAC,
 149 };
 150
 151 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 152         {
 153                 /* arp */
 154                 .discard = 0,
 155                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 156                 .attrs = {
 157                         {
 158                                 /* frame type - arp, hw type - ethernet */
 159                                 .offset_type =
 160                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 161                                 .offset = sizeof(rfc1042_header),
 162                                 .val = cpu_to_be32(0x08060001),
 163                                 .mask = cpu_to_be32(0xffffffff),
 164                         },
 165                         {
 166                                 /* arp dest ip */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header) + 2 +
 170                                           sizeof(struct arphdr) +
 171                                           ETH_ALEN + sizeof(__be32) +
 172                                           ETH_ALEN,
 173                                 .mask = cpu_to_be32(0xffffffff),
 174                                 /* mark it as special field */
 175                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 176                         },
 177                 },
 178         },
 179         {
 180                 /* dhcp offer bcast */
 181                 .discard = 0,
 182                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 183                 .attrs = {
 184                         {
 185                                 /* udp dest port - 68 (bootp client)*/
 186                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 187                                 .offset = offsetof(struct udphdr, dest),
 188                                 .val = cpu_to_be32(0x00440000),
 189                                 .mask = cpu_to_be32(0xffff0000),
 190                         },
 191                         {
 192                                 /* dhcp - lsb bytes of client hw address */
 193                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 194                                 .offset = 38,
 195                                 .mask = cpu_to_be32(0xffffffff),
 196                                 /* mark it as special field */
 197                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 198                         },
 199                 },
 200         },
 201         /* last filter must be empty */
 202         {},
 203 };
 204 #endif
 205
 206 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 207 {
 208         if (!iwl_mvm_is_d0i3_supported(mvm))
 209                 return;
 210
 211         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 212         WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
 213         iwl_trans_ref(mvm->trans);
 214 }
 215
 216 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 217 {
 218         if (!iwl_mvm_is_d0i3_supported(mvm))
 219                 return;
 220
 221         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 222         WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
 223         iwl_trans_unref(mvm->trans);
 224 }
 225
 226 static void
 227 iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
 228 {
 229         int i;
 230
 231         if (!iwl_mvm_is_d0i3_supported(mvm))
 232                 return;
 233
 234         for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
 235                 if (ref == i)
 236                         continue;
 237
 238                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
 239                 clear_bit(i, mvm->ref_bitmap);
 240                 iwl_trans_unref(mvm->trans);
 241         }
 242 }
 243
 244 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 245 {
 246         int i;
 247
 248         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 249         for (i = 0; i < NUM_PHY_CTX; i++) {
 250                 mvm->phy_ctxts[i].id = i;
 251                 mvm->phy_ctxts[i].ref = 0;
 252         }
 253 }
 254
 255 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 256 {
 257         /* we create the 802.11 header and SSID element */
 258         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
 259                 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
 260         return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 261 }
 262
 263 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 264 {
 265         struct ieee80211_hw *hw = mvm->hw;
 266         int num_mac, ret, i;
 267
 268         /* Tell mac80211 our characteristics */
 269         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 270                     IEEE80211_HW_SPECTRUM_MGMT |
 271                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 272                     IEEE80211_HW_QUEUE_CONTROL |
 273                     IEEE80211_HW_WANT_MONITOR_VIF |
 274                     IEEE80211_HW_SUPPORTS_PS |
 275                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 276                     IEEE80211_HW_AMPDU_AGGREGATION |
 277                     IEEE80211_HW_TIMING_BEACON_ONLY |
 278                     IEEE80211_HW_CONNECTION_MONITOR |
 279                     IEEE80211_HW_SUPPORTS_UAPSD |
 280                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 281                     IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 282
 283         hw->queues = mvm->first_agg_queue;
 284         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 285         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 286                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 287         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
 288         hw->rate_control_algorithm = "iwl-mvm-rs";
 289         hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 290         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 291
 292         /*
 293          * Enable 11w if advertised by firmware and software crypto
 294          * is not enabled (as the firmware will interpret some mgmt
 295          * packets, so enabling it with software crypto isn't safe)
 296          */
 297         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 298             !iwlwifi_mod_params.sw_crypto)
 299                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 300
 301         /* Disable uAPSD due to firmware issues */
 302         if (true)
 303                 hw->flags &= ~IEEE80211_HW_SUPPORTS_UAPSD;
 304
 305         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 306         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 307         hw->chanctx_data_size = sizeof(u16);
 308
 309         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 310                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 311                 BIT(NL80211_IFTYPE_AP) |
 312                 BIT(NL80211_IFTYPE_P2P_GO) |
 313                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 314                 BIT(NL80211_IFTYPE_ADHOC);
 315
 316         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 317         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 318                                        REGULATORY_DISABLE_BEACON_HINTS;
 319
 320         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 321                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 322
 323         if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
 324                 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 325
 326         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 327         hw->wiphy->n_iface_combinations =
 328                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 329
 330         hw->wiphy->max_remain_on_channel_duration = 10000;
 331         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 332
 333         /* Extract MAC address */
 334         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 335         hw->wiphy->addresses = mvm->addresses;
 336         hw->wiphy->n_addresses = 1;
 337
 338         /* Extract additional MAC addresses if available */
 339         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 340                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 341
 342         for (i = 1; i < num_mac; i++) {
 343                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 344                        ETH_ALEN);
 345                 mvm->addresses[i].addr[5]++;
 346                 hw->wiphy->n_addresses++;
 347         }
 348
 349         iwl_mvm_reset_phy_ctxts(mvm);
 350
 351         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 352
 353         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 354
 355         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 356                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 357                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 358         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 359                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 360                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 361
 362         hw->wiphy->hw_version = mvm->trans->hw_id;
 363
 364         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 365                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 366         else
 367                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 368
 369         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 370         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 371         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 372         /* we create the 802.11 header and zero length SSID IE. */
 373         hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 374
 375         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 376                                NL80211_FEATURE_P2P_GO_OPPPS;
 377
 378         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 379
 380         /* currently FW API supports only one optional cipher scheme */
 381         if (mvm->fw->cs[0].cipher) {
 382                 mvm->hw->n_cipher_schemes = 1;
 383                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 384         }
 385
 386 #ifdef CONFIG_PM_SLEEP
 387         if (iwl_mvm_is_d0i3_supported(mvm) &&
 388             device_can_wakeup(mvm->trans->dev)) {
 389                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 390                 hw->wiphy->wowlan = &mvm->wowlan;
 391         } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 392             mvm->trans->ops->d3_suspend &&
 393             mvm->trans->ops->d3_resume &&
 394             device_can_wakeup(mvm->trans->dev)) {
 395                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 396                                     WIPHY_WOWLAN_DISCONNECT |
 397                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 398                                     WIPHY_WOWLAN_RFKILL_RELEASE;
 399                 if (!iwlwifi_mod_params.sw_crypto)
 400                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 401                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 402                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 403
 404                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 405                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 406                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 407                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 408                 hw->wiphy->wowlan = &mvm->wowlan;
 409         }
 410 #endif
 411
 412 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 413         /* assign default bcast filtering configuration */
 414         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 415 #endif
 416
 417         ret = iwl_mvm_leds_init(mvm);
 418         if (ret)
 419                 return ret;
 420
 421         ret = ieee80211_register_hw(mvm->hw);
 422         if (ret)
 423                 iwl_mvm_leds_exit(mvm);
 424
 425         return ret;
 426 }
 427
 428 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 429                              struct ieee80211_sta *sta,
 430                              struct sk_buff *skb)
 431 {
 432         struct iwl_mvm_sta *mvmsta;
 433         bool defer = false;
 434
 435         /*
 436          * double check the IN_D0I3 flag both before and after
 437          * taking the spinlock, in order to prevent taking
 438          * the spinlock when not needed.
 439          */
 440         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 441                 return false;
 442
 443         spin_lock(&mvm->d0i3_tx_lock);
 444         /*
 445          * testing the flag again ensures the skb dequeue
 446          * loop (on d0i3 exit) hasn't run yet.
 447          */
 448         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 449                 goto out;
 450
 451         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 452         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 453             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 454                 goto out;
 455
 456         __skb_queue_tail(&mvm->d0i3_tx, skb);
 457         ieee80211_stop_queues(mvm->hw);
 458
 459         /* trigger wakeup */
 460         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 461         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 462
 463         defer = true;
 464 out:
 465         spin_unlock(&mvm->d0i3_tx_lock);
 466         return defer;
 467 }
 468
 469 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 470                            struct ieee80211_tx_control *control,
 471                            struct sk_buff *skb)
 472 {
 473         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 474         struct ieee80211_sta *sta = control->sta;
 475         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 476         struct ieee80211_hdr *hdr = (void *)skb->data;
 477
 478         if (iwl_mvm_is_radio_killed(mvm)) {
 479                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 480                 goto drop;
 481         }
 482
 483         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 484             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 485                 goto drop;
 486
 487         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 488         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 489                      ieee80211_is_mgmt(hdr->frame_control) &&
 490                      !ieee80211_is_deauth(hdr->frame_control) &&
 491                      !ieee80211_is_disassoc(hdr->frame_control) &&
 492                      !ieee80211_is_action(hdr->frame_control)))
 493                 sta = NULL;
 494
 495         if (sta) {
 496                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 497                         return;
 498                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 499                         goto drop;
 500                 return;
 501         }
 502
 503         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 504                 goto drop;
 505         return;
 506  drop:
 507         ieee80211_free_txskb(hw, skb);
 508 }
 509
 510 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 511 {
 512         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 513                 return false;
 514         return true;
 515 }
 516
 517 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 518 {
 519         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 520                 return false;
 521         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 522                 return true;
 523
 524         /* enabled by default */
 525         return true;
 526 }
 527
 528 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 529                                     struct ieee80211_vif *vif,
 530                                     enum ieee80211_ampdu_mlme_action action,
 531                                     struct ieee80211_sta *sta, u16 tid,
 532                                     u16 *ssn, u8 buf_size)
 533 {
 534         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 535         int ret;
 536         bool tx_agg_ref = false;
 537
 538         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 539                      sta->addr, tid, action);
 540
 541         if (!(mvm->nvm_data->sku_cap_11n_enable))
 542                 return -EACCES;
 543
 544         /* return from D0i3 before starting a new Tx aggregation */
 545         switch (action) {
 546         case IEEE80211_AMPDU_TX_START:
 547         case IEEE80211_AMPDU_TX_STOP_CONT:
 548         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 549         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 550         case IEEE80211_AMPDU_TX_OPERATIONAL:
 551                 iwl_mvm_ref(mvm, IWL_MVM_REF_TX_AGG);
 552                 tx_agg_ref = true;
 553
 554                 /*
 555                  * for tx start, wait synchronously until D0i3 exit to
 556                  * get the correct sequence number for the tid.
 557                  * additionally, some other ampdu actions use direct
 558                  * target access, which is not handled automatically
 559                  * by the trans layer (unlike commands), so wait for
 560                  * d0i3 exit in these cases as well.
 561                  */
 562                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 563                           !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status), HZ)) {
 564                         WARN_ON_ONCE(1);
 565                         iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 566                         return -EIO;
 567                 }
 568                 break;
 569         default:
 570                 break;
 571         }
 572
 573         mutex_lock(&mvm->mutex);
 574
 575         switch (action) {
 576         case IEEE80211_AMPDU_RX_START:
 577                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 578                         ret = -EINVAL;
 579                         break;
 580                 }
 581                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 582                 break;
 583         case IEEE80211_AMPDU_RX_STOP:
 584                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 585                 break;
 586         case IEEE80211_AMPDU_TX_START:
 587                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 588                         ret = -EINVAL;
 589                         break;
 590                 }
 591                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 592                 break;
 593         case IEEE80211_AMPDU_TX_STOP_CONT:
 594                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 595                 break;
 596         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 597         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 598                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 599                 break;
 600         case IEEE80211_AMPDU_TX_OPERATIONAL:
 601                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 602                 break;
 603         default:
 604                 WARN_ON_ONCE(1);
 605                 ret = -EINVAL;
 606                 break;
 607         }
 608         mutex_unlock(&mvm->mutex);
 609
 610         /*
 611          * If the tid is marked as started, we won't use it for offloaded
 612          * traffic on the next D0i3 entry. It's safe to unref.
 613          */
 614         if (tx_agg_ref)
 615                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 616
 617         return ret;
 618 }
 619
 620 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 621                                      struct ieee80211_vif *vif)
 622 {
 623         struct iwl_mvm *mvm = data;
 624         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 625
 626         mvmvif->uploaded = false;
 627         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 628
 629         /* does this make sense at all? */
 630         mvmvif->color++;
 631
 632         spin_lock_bh(&mvm->time_event_lock);
 633         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 634         spin_unlock_bh(&mvm->time_event_lock);
 635
 636         mvmvif->phy_ctxt = NULL;
 637 }
 638
 639 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 640 {
 641 #ifdef CONFIG_IWLWIFI_DEBUGFS
 642         static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
 643
 644         iwl_mvm_fw_error_dump(mvm);
 645
 646         /* notify the userspace about the error we had */
 647         kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
 648 #endif
 649
 650         iwl_trans_stop_device(mvm->trans);
 651
 652         mvm->scan_status = IWL_MVM_SCAN_NONE;
 653
 654         /* just in case one was running */
 655         ieee80211_remain_on_channel_expired(mvm->hw);
 656
 657         ieee80211_iterate_active_interfaces_atomic(
 658                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 659                 iwl_mvm_cleanup_iterator, mvm);
 660
 661         mvm->p2p_device_vif = NULL;
 662         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
 663
 664         iwl_mvm_reset_phy_ctxts(mvm);
 665         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 666         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 667
 668         ieee80211_wake_queues(mvm->hw);
 669
 670         /* cleanup all stale references (scan, roc), but keep the
 671          * ucode_down ref until reconfig is complete */
 672         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
 673
 674         mvm->vif_count = 0;
 675         mvm->rx_ba_sessions = 0;
 676 }
 677
 678 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 679 {
 680         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 681         int ret;
 682
 683         mutex_lock(&mvm->mutex);
 684
 685         /* Clean up some internal and mac80211 state on restart */
 686         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 687                 iwl_mvm_restart_cleanup(mvm);
 688
 689         ret = iwl_mvm_up(mvm);
 690         mutex_unlock(&mvm->mutex);
 691
 692         return ret;
 693 }
 694
 695 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 696 {
 697         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 698         int ret;
 699
 700         mutex_lock(&mvm->mutex);
 701
 702         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 703         iwl_mvm_d0i3_enable_tx(mvm, NULL);
 704         ret = iwl_mvm_update_quotas(mvm, NULL);
 705         if (ret)
 706                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 707                         ret);
 708
 709         /* allow transport/FW low power modes */
 710         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
 711
 712         mutex_unlock(&mvm->mutex);
 713 }
 714
 715 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 716 {
 717         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 718
 719         flush_work(&mvm->d0i3_exit_work);
 720         flush_work(&mvm->async_handlers_wk);
 721
 722         mutex_lock(&mvm->mutex);
 723
 724         /* disallow low power states when the FW is down */
 725         iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
 726
 727         /* async_handlers_wk is now blocked */
 728
 729         /*
 730          * The work item could be running or queued if the
 731          * ROC time event stops just as we get here.
 732          */
 733         cancel_work_sync(&mvm->roc_done_wk);
 734
 735         iwl_trans_stop_device(mvm->trans);
 736
 737         iwl_mvm_async_handlers_purge(mvm);
 738         /* async_handlers_list is empty and will stay empty: HW is stopped */
 739
 740         /* the fw is stopped, the aux sta is dead: clean up driver state */
 741         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 742
 743         mutex_unlock(&mvm->mutex);
 744
 745         /*
 746          * The worker might have been waiting for the mutex, let it run and
 747          * discover that its list is now empty.
 748          */
 749         cancel_work_sync(&mvm->async_handlers_wk);
 750 }
 751
 752 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
 753 {
 754         u16 i;
 755
 756         lockdep_assert_held(&mvm->mutex);
 757
 758         for (i = 0; i < NUM_PHY_CTX; i++)
 759                 if (!mvm->phy_ctxts[i].ref)
 760                         return &mvm->phy_ctxts[i];
 761
 762         IWL_ERR(mvm, "No available PHY context\n");
 763         return NULL;
 764 }
 765
 766 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 767                                 s8 tx_power)
 768 {
 769         /* FW is in charge of regulatory enforcement */
 770         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
 771                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
 772                 .pwr_restriction = cpu_to_le16(tx_power),
 773         };
 774
 775         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
 776                                     sizeof(reduce_txpwr_cmd),
 777                                     &reduce_txpwr_cmd);
 778 }
 779
 780 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 781                                      struct ieee80211_vif *vif)
 782 {
 783         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 784         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 785         int ret;
 786
 787         /*
 788          * Not much to do here. The stack will not allow interface
 789          * types or combinations that we didn't advertise, so we
 790          * don't really have to check the types.
 791          */
 792
 793         mutex_lock(&mvm->mutex);
 794
 795         /* Allocate resources for the MAC context, and add it to the fw  */
 796         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 797         if (ret)
 798                 goto out_unlock;
 799
 800         /* Counting number of interfaces is needed for legacy PM */
 801         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 802                 mvm->vif_count++;
 803
 804         /*
 805          * The AP binding flow can be done only after the beacon
 806          * template is configured (which happens only in the mac80211
 807          * start_ap() flow), and adding the broadcast station can happen
 808          * only after the binding.
 809          * In addition, since modifying the MAC before adding a bcast
 810          * station is not allowed by the FW, delay the adding of MAC context to
 811          * the point where we can also add the bcast station.
 812          * In short: there's not much we can do at this point, other than
 813          * allocating resources :)
 814          */
 815         if (vif->type == NL80211_IFTYPE_AP ||
 816             vif->type == NL80211_IFTYPE_ADHOC) {
 817                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 818                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 819                                                qmask,
 820                                                ieee80211_vif_type_p2p(vif));
 821                 if (ret) {
 822                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 823                         goto out_release;
 824                 }
 825
 826                 iwl_mvm_vif_dbgfs_register(mvm, vif);
 827                 goto out_unlock;
 828         }
 829
 830         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 831         if (ret)
 832                 goto out_release;
 833
 834         ret = iwl_mvm_power_update_mac(mvm, vif);
 835         if (ret)
 836                 goto out_release;
 837
 838         /* beacon filtering */
 839         ret = iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
 840         if (ret)
 841                 goto out_remove_mac;
 842
 843         if (!mvm->bf_allowed_vif &&
 844             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
 845                 mvm->bf_allowed_vif = mvmvif;
 846                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 847                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 848         }
 849
 850         /*
 851          * P2P_DEVICE interface does not have a channel context assigned to it,
 852          * so a dedicated PHY context is allocated to it and the corresponding
 853          * MAC context is bound to it at this stage.
 854          */
 855         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 856
 857                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
 858                 if (!mvmvif->phy_ctxt) {
 859                         ret = -ENOSPC;
 860                         goto out_free_bf;
 861                 }
 862
 863                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
 864                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 865                 if (ret)
 866                         goto out_unref_phy;
 867
 868                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 869                 if (ret)
 870                         goto out_unbind;
 871
 872                 /* Save a pointer to p2p device vif, so it can later be used to
 873                  * update the p2p device MAC when a GO is started/stopped */
 874                 mvm->p2p_device_vif = vif;
 875         }
 876
 877         iwl_mvm_vif_dbgfs_register(mvm, vif);
 878         goto out_unlock;
 879
 880  out_unbind:
 881         iwl_mvm_binding_remove_vif(mvm, vif);
 882  out_unref_phy:
 883         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 884  out_free_bf:
 885         if (mvm->bf_allowed_vif == mvmvif) {
 886                 mvm->bf_allowed_vif = NULL;
 887                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 888                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 889         }
 890  out_remove_mac:
 891         mvmvif->phy_ctxt = NULL;
 892         iwl_mvm_mac_ctxt_remove(mvm, vif);
 893  out_release:
 894         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 895                 mvm->vif_count--;
 896
 897         iwl_mvm_mac_ctxt_release(mvm, vif);
 898  out_unlock:
 899         mutex_unlock(&mvm->mutex);
 900
 901         return ret;
 902 }
 903
 904 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 905                                         struct ieee80211_vif *vif)
 906 {
 907         u32 tfd_msk = 0, ac;
 908
 909         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 910                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 911                         tfd_msk |= BIT(vif->hw_queue[ac]);
 912
 913         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 914                 tfd_msk |= BIT(vif->cab_queue);
 915
 916         if (tfd_msk) {
 917                 mutex_lock(&mvm->mutex);
 918                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 919                 mutex_unlock(&mvm->mutex);
 920         }
 921
 922         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 923                 /*
 924                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 925                  * We assume here that all the packets sent to the OFFCHANNEL
 926                  * queue are sent in ROC session.
 927                  */
 928                 flush_work(&mvm->roc_done_wk);
 929         } else {
 930                 /*
 931                  * By now, all the AC queues are empty. The AGG queues are
 932                  * empty too. We already got all the Tx responses for all the
 933                  * packets in the queues. The drain work can have been
 934                  * triggered. Flush it.
 935                  */
 936                 flush_work(&mvm->sta_drained_wk);
 937         }
 938 }
 939
 940 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 941                                          struct ieee80211_vif *vif)
 942 {
 943         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 944         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 945
 946         iwl_mvm_prepare_mac_removal(mvm, vif);
 947
 948         mutex_lock(&mvm->mutex);
 949
 950         if (mvm->bf_allowed_vif == mvmvif) {
 951                 mvm->bf_allowed_vif = NULL;
 952                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 953                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 954         }
 955
 956         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 957
 958         /*
 959          * For AP/GO interface, the tear down of the resources allocated to the
 960          * interface is be handled as part of the stop_ap flow.
 961          */
 962         if (vif->type == NL80211_IFTYPE_AP ||
 963             vif->type == NL80211_IFTYPE_ADHOC) {
 964 #ifdef CONFIG_NL80211_TESTMODE
 965                 if (vif == mvm->noa_vif) {
 966                         mvm->noa_vif = NULL;
 967                         mvm->noa_duration = 0;
 968                 }
 969 #endif
 970                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 971                 goto out_release;
 972         }
 973
 974         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 975                 mvm->p2p_device_vif = NULL;
 976                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 977                 iwl_mvm_binding_remove_vif(mvm, vif);
 978                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 979                 mvmvif->phy_ctxt = NULL;
 980         }
 981
 982         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 983                 mvm->vif_count--;
 984
 985         iwl_mvm_power_update_mac(mvm, vif);
 986         iwl_mvm_mac_ctxt_remove(mvm, vif);
 987
 988 out_release:
 989         iwl_mvm_mac_ctxt_release(mvm, vif);
 990         mutex_unlock(&mvm->mutex);
 991 }
 992
 993 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 994 {
 995         return 0;
 996 }
 997
 998 struct iwl_mvm_mc_iter_data {
 999         struct iwl_mvm *mvm;
1000         int port_id;
1001 };
1002
1003 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1004                                       struct ieee80211_vif *vif)
1005 {
1006         struct iwl_mvm_mc_iter_data *data = _data;
1007         struct iwl_mvm *mvm = data->mvm;
1008         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1009         int ret, len;
1010
1011         /* if we don't have free ports, mcast frames will be dropped */
1012         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1013                 return;
1014
1015         if (vif->type != NL80211_IFTYPE_STATION ||
1016             !vif->bss_conf.assoc)
1017                 return;
1018
1019         cmd->port_id = data->port_id++;
1020         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1021         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1022
1023         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1024         if (ret)
1025                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1026 }
1027
1028 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1029 {
1030         struct iwl_mvm_mc_iter_data iter_data = {
1031                 .mvm = mvm,
1032         };
1033
1034         lockdep_assert_held(&mvm->mutex);
1035
1036         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1037                 return;
1038
1039         ieee80211_iterate_active_interfaces_atomic(
1040                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1041                 iwl_mvm_mc_iface_iterator, &iter_data);
1042 }
1043
1044 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1045                                      struct netdev_hw_addr_list *mc_list)
1046 {
1047         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1048         struct iwl_mcast_filter_cmd *cmd;
1049         struct netdev_hw_addr *addr;
1050         int addr_count = netdev_hw_addr_list_count(mc_list);
1051         bool pass_all = false;
1052         int len;
1053
1054         if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1055                 pass_all = true;
1056                 addr_count = 0;
1057         }
1058
1059         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1060         cmd = kzalloc(len, GFP_ATOMIC);
1061         if (!cmd)
1062                 return 0;
1063
1064         if (pass_all) {
1065                 cmd->pass_all = 1;
1066                 return (u64)(unsigned long)cmd;
1067         }
1068
1069         netdev_hw_addr_list_for_each(addr, mc_list) {
1070                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1071                                    cmd->count, addr->addr);
1072                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1073                        addr->addr, ETH_ALEN);
1074                 cmd->count++;
1075         }
1076
1077         return (u64)(unsigned long)cmd;
1078 }
1079
1080 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1081                                      unsigned int changed_flags,
1082                                      unsigned int *total_flags,
1083                                      u64 multicast)
1084 {
1085         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1086         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1087
1088         mutex_lock(&mvm->mutex);
1089
1090         /* replace previous configuration */
1091         kfree(mvm->mcast_filter_cmd);
1092         mvm->mcast_filter_cmd = cmd;
1093
1094         if (!cmd)
1095                 goto out;
1096
1097         iwl_mvm_recalc_multicast(mvm);
1098 out:
1099         mutex_unlock(&mvm->mutex);
1100         *total_flags = 0;
1101 }
1102
1103 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1104 struct iwl_bcast_iter_data {
1105         struct iwl_mvm *mvm;
1106         struct iwl_bcast_filter_cmd *cmd;
1107         u8 current_filter;
1108 };
1109
1110 static void
1111 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1112                          const struct iwl_fw_bcast_filter *in_filter,
1113                          struct iwl_fw_bcast_filter *out_filter)
1114 {
1115         struct iwl_fw_bcast_filter_attr *attr;
1116         int i;
1117
1118         memcpy(out_filter, in_filter, sizeof(*out_filter));
1119
1120         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1121                 attr = &out_filter->attrs[i];
1122
1123                 if (!attr->mask)
1124                         break;
1125
1126                 switch (attr->reserved1) {
1127                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1128                         if (vif->bss_conf.arp_addr_cnt != 1) {
1129                                 attr->mask = 0;
1130                                 continue;
1131                         }
1132
1133                         attr->val = vif->bss_conf.arp_addr_list[0];
1134                         break;
1135                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1136                         attr->val = *(__be32 *)&vif->addr[2];
1137                         break;
1138                 default:
1139                         break;
1140                 }
1141                 attr->reserved1 = 0;
1142                 out_filter->num_attrs++;
1143         }
1144 }
1145
1146 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1147                                           struct ieee80211_vif *vif)
1148 {
1149         struct iwl_bcast_iter_data *data = _data;
1150         struct iwl_mvm *mvm = data->mvm;
1151         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1152         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1153         struct iwl_fw_bcast_mac *bcast_mac;
1154         int i;
1155
1156         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1157                 return;
1158
1159         bcast_mac = &cmd->macs[mvmvif->id];
1160
1161         /* enable filtering only for associated stations */
1162         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc)
1163                 return;
1164
1165         bcast_mac->default_discard = 1;
1166
1167         /* copy all configured filters */
1168         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1169                 /*
1170                  * Make sure we don't exceed our filters limit.
1171                  * if there is still a valid filter to be configured,
1172                  * be on the safe side and just allow bcast for this mac.
1173                  */
1174                 if (WARN_ON_ONCE(data->current_filter >=
1175                                  ARRAY_SIZE(cmd->filters))) {
1176                         bcast_mac->default_discard = 0;
1177                         bcast_mac->attached_filters = 0;
1178                         break;
1179                 }
1180
1181                 iwl_mvm_set_bcast_filter(vif,
1182                                          &mvm->bcast_filters[i],
1183                                          &cmd->filters[data->current_filter]);
1184
1185                 /* skip current filter if it contains no attributes */
1186                 if (!cmd->filters[data->current_filter].num_attrs)
1187                         continue;
1188
1189                 /* attach the filter to current mac */
1190                 bcast_mac->attached_filters |=
1191                                 cpu_to_le16(BIT(data->current_filter));
1192
1193                 data->current_filter++;
1194         }
1195 }
1196
1197 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1198                                     struct iwl_bcast_filter_cmd *cmd)
1199 {
1200         struct iwl_bcast_iter_data iter_data = {
1201                 .mvm = mvm,
1202                 .cmd = cmd,
1203         };
1204
1205         memset(cmd, 0, sizeof(*cmd));
1206         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1207         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1208
1209 #ifdef CONFIG_IWLWIFI_DEBUGFS
1210         /* use debugfs filters/macs if override is configured */
1211         if (mvm->dbgfs_bcast_filtering.override) {
1212                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1213                        sizeof(cmd->filters));
1214                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1215                        sizeof(cmd->macs));
1216                 return true;
1217         }
1218 #endif
1219
1220         /* if no filters are configured, do nothing */
1221         if (!mvm->bcast_filters)
1222                 return false;
1223
1224         /* configure and attach these filters for each associated sta vif */
1225         ieee80211_iterate_active_interfaces(
1226                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1227                 iwl_mvm_bcast_filter_iterator, &iter_data);
1228
1229         return true;
1230 }
1231 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1232                                           struct ieee80211_vif *vif)
1233 {
1234         struct iwl_bcast_filter_cmd cmd;
1235
1236         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1237                 return 0;
1238
1239         /* bcast filtering isn't supported for P2P client */
1240         if (vif->p2p)
1241                 return 0;
1242
1243         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1244                 return 0;
1245
1246         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, CMD_SYNC,
1247                                     sizeof(cmd), &cmd);
1248 }
1249 #else
1250 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1251                                                  struct ieee80211_vif *vif)
1252 {
1253         return 0;
1254 }
1255 #endif
1256
1257 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1258                                              struct ieee80211_vif *vif,
1259                                              struct ieee80211_bss_conf *bss_conf,
1260                                              u32 changes)
1261 {
1262         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1263         int ret;
1264
1265         /*
1266          * Re-calculate the tsf id, as the master-slave relations depend on the
1267          * beacon interval, which was not known when the station interface was
1268          * added.
1269          */
1270         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1271                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1272
1273         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1274         if (ret)
1275                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1276
1277         if (changes & BSS_CHANGED_ASSOC) {
1278                 if (bss_conf->assoc) {
1279                         /* add quota for this interface */
1280                         ret = iwl_mvm_update_quotas(mvm, vif);
1281                         if (ret) {
1282                                 IWL_ERR(mvm, "failed to update quotas\n");
1283                                 return;
1284                         }
1285
1286                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1287                                      &mvm->status)) {
1288                                 /*
1289                                  * If we're restarting then the firmware will
1290                                  * obviously have lost synchronisation with
1291                                  * the AP. It will attempt to synchronise by
1292                                  * itself, but we can make it more reliable by
1293                                  * scheduling a session protection time event.
1294                                  *
1295                                  * The firmware needs to receive a beacon to
1296                                  * catch up with synchronisation, use 110% of
1297                                  * the beacon interval.
1298                                  *
1299                                  * Set a large maximum delay to allow for more
1300                                  * than a single interface.
1301                                  */
1302                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1303                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1304                                                         5 * dur);
1305                         }
1306
1307                         iwl_mvm_sf_update(mvm, vif, false);
1308                         iwl_mvm_power_vif_assoc(mvm, vif);
1309                         if (vif->p2p)
1310                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1311                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1312                         /*
1313                          * If update fails - SF might be running in associated
1314                          * mode while disassociated - which is forbidden.
1315                          */
1316                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1317                                   "Failed to update SF upon disassociation\n");
1318
1319                         /* remove AP station now that the MAC is unassoc */
1320                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1321                         if (ret)
1322                                 IWL_ERR(mvm, "failed to remove AP station\n");
1323
1324                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1325                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1326                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1327                         /* remove quota for this interface */
1328                         ret = iwl_mvm_update_quotas(mvm, NULL);
1329                         if (ret)
1330                                 IWL_ERR(mvm, "failed to update quotas\n");
1331
1332                         if (vif->p2p)
1333                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1334                 }
1335
1336                 iwl_mvm_recalc_multicast(mvm);
1337                 iwl_mvm_configure_bcast_filter(mvm, vif);
1338
1339                 /* reset rssi values */
1340                 mvmvif->bf_data.ave_beacon_signal = 0;
1341
1342                 iwl_mvm_bt_coex_vif_change(mvm);
1343                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1344                                     IEEE80211_SMPS_AUTOMATIC);
1345         } else if (changes & BSS_CHANGED_BEACON_INFO) {
1346                 /*
1347                  * We received a beacon _after_ association so
1348                  * remove the session protection.
1349                  */
1350                 iwl_mvm_remove_time_event(mvm, mvmvif,
1351                                           &mvmvif->time_event_data);
1352                 iwl_mvm_sf_update(mvm, vif, false);
1353                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, CMD_SYNC));
1354         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1355                               BSS_CHANGED_QOS)) {
1356                 ret = iwl_mvm_power_update_mac(mvm, vif);
1357                 if (ret)
1358                         IWL_ERR(mvm, "failed to update power mode\n");
1359         }
1360         if (changes & BSS_CHANGED_TXPOWER) {
1361                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1362                                 bss_conf->txpower);
1363                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1364         }
1365
1366         if (changes & BSS_CHANGED_CQM) {
1367                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
1368                 /* reset cqm events tracking */
1369                 mvmvif->bf_data.last_cqm_event = 0;
1370                 ret = iwl_mvm_update_beacon_filter(mvm, vif, false, CMD_SYNC);
1371                 if (ret)
1372                         IWL_ERR(mvm, "failed to update CQM thresholds\n");
1373         }
1374
1375         if (changes & BSS_CHANGED_ARP_FILTER) {
1376                 IWL_DEBUG_MAC80211(mvm, "arp filter changed");
1377                 iwl_mvm_configure_bcast_filter(mvm, vif);
1378         }
1379 }
1380
1381 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1382                                  struct ieee80211_vif *vif)
1383 {
1384         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1385         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1386         int ret;
1387
1388         mutex_lock(&mvm->mutex);
1389
1390         /* Send the beacon template */
1391         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1392         if (ret)
1393                 goto out_unlock;
1394
1395         /*
1396          * Re-calculate the tsf id, as the master-slave relations depend on the
1397          * beacon interval, which was not known when the AP interface was added.
1398          */
1399         if (vif->type == NL80211_IFTYPE_AP)
1400                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1401
1402         /* Add the mac context */
1403         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1404         if (ret)
1405                 goto out_unlock;
1406
1407         /* Perform the binding */
1408         ret = iwl_mvm_binding_add_vif(mvm, vif);
1409         if (ret)
1410                 goto out_remove;
1411
1412         /* Send the bcast station. At this stage the TBTT and DTIM time events
1413          * are added and applied to the scheduler */
1414         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1415         if (ret)
1416                 goto out_unbind;
1417
1418         /* must be set before quota calculations */
1419         mvmvif->ap_ibss_active = true;
1420
1421         /* power updated needs to be done before quotas */
1422         iwl_mvm_power_update_mac(mvm, vif);
1423
1424         ret = iwl_mvm_update_quotas(mvm, vif);
1425         if (ret)
1426                 goto out_quota_failed;
1427
1428         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1429         if (vif->p2p && mvm->p2p_device_vif)
1430                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1431
1432         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1433
1434         iwl_mvm_bt_coex_vif_change(mvm);
1435
1436         mutex_unlock(&mvm->mutex);
1437         return 0;
1438
1439 out_quota_failed:
1440         iwl_mvm_power_update_mac(mvm, vif);
1441         mvmvif->ap_ibss_active = false;
1442         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1443 out_unbind:
1444         iwl_mvm_binding_remove_vif(mvm, vif);
1445 out_remove:
1446         iwl_mvm_mac_ctxt_remove(mvm, vif);
1447 out_unlock:
1448         mutex_unlock(&mvm->mutex);
1449         return ret;
1450 }
1451
1452 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1453                                  struct ieee80211_vif *vif)
1454 {
1455         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1456         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1457
1458         iwl_mvm_prepare_mac_removal(mvm, vif);
1459
1460         mutex_lock(&mvm->mutex);
1461
1462         mvmvif->ap_ibss_active = false;
1463
1464         iwl_mvm_bt_coex_vif_change(mvm);
1465
1466         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1467
1468         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1469         if (vif->p2p && mvm->p2p_device_vif)
1470                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1471
1472         iwl_mvm_update_quotas(mvm, NULL);
1473         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1474         iwl_mvm_binding_remove_vif(mvm, vif);
1475
1476         iwl_mvm_power_update_mac(mvm, vif);
1477
1478         iwl_mvm_mac_ctxt_remove(mvm, vif);
1479
1480         mutex_unlock(&mvm->mutex);
1481 }
1482
1483 static void
1484 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1485                                  struct ieee80211_vif *vif,
1486                                  struct ieee80211_bss_conf *bss_conf,
1487                                  u32 changes)
1488 {
1489         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1490
1491         /* Changes will be applied when the AP/IBSS is started */
1492         if (!mvmvif->ap_ibss_active)
1493                 return;
1494
1495         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1496                        BSS_CHANGED_BANDWIDTH) &&
1497             iwl_mvm_mac_ctxt_changed(mvm, vif))
1498                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1499
1500         /* Need to send a new beacon template to the FW */
1501         if (changes & BSS_CHANGED_BEACON &&
1502             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1503                 IWL_WARN(mvm, "Failed updating beacon data\n");
1504 }
1505
1506 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1507                                      struct ieee80211_vif *vif,
1508                                      struct ieee80211_bss_conf *bss_conf,
1509                                      u32 changes)
1510 {
1511         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1512
1513         mutex_lock(&mvm->mutex);
1514
1515         switch (vif->type) {
1516         case NL80211_IFTYPE_STATION:
1517                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1518                 break;
1519         case NL80211_IFTYPE_AP:
1520         case NL80211_IFTYPE_ADHOC:
1521                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1522                 break;
1523         default:
1524                 /* shouldn't happen */
1525                 WARN_ON_ONCE(1);
1526         }
1527
1528         mutex_unlock(&mvm->mutex);
1529 }
1530
1531 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1532                                struct ieee80211_vif *vif,
1533                                struct cfg80211_scan_request *req)
1534 {
1535         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1536         int ret;
1537
1538         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1539                 return -EINVAL;
1540
1541         mutex_lock(&mvm->mutex);
1542
1543         switch (mvm->scan_status) {
1544         case IWL_MVM_SCAN_SCHED:
1545                 ret = iwl_mvm_sched_scan_stop(mvm);
1546                 if (ret) {
1547                         ret = -EBUSY;
1548                         goto out;
1549                 }
1550                 break;
1551         case IWL_MVM_SCAN_NONE:
1552                 break;
1553         default:
1554                 ret = -EBUSY;
1555                 goto out;
1556         }
1557
1558         iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1559
1560         ret = iwl_mvm_scan_request(mvm, vif, req);
1561         if (ret)
1562                 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1563 out:
1564         mutex_unlock(&mvm->mutex);
1565         /* make sure to flush the Rx handler before the next scan arrives */
1566         iwl_mvm_wait_for_async_handlers(mvm);
1567         return ret;
1568 }
1569
1570 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1571                                        struct ieee80211_vif *vif)
1572 {
1573         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1574
1575         mutex_lock(&mvm->mutex);
1576
1577         iwl_mvm_cancel_scan(mvm);
1578
1579         mutex_unlock(&mvm->mutex);
1580 }
1581
1582 static void
1583 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1584                                   struct ieee80211_sta *sta, u16 tids,
1585                                   int num_frames,
1586                                   enum ieee80211_frame_release_type reason,
1587                                   bool more_data)
1588 {
1589         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1590
1591         /* Called when we need to transmit (a) frame(s) from mac80211 */
1592
1593         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1594                                           tids, more_data, false);
1595 }
1596
1597 static void
1598 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1599                                     struct ieee80211_sta *sta, u16 tids,
1600                                     int num_frames,
1601                                     enum ieee80211_frame_release_type reason,
1602                                     bool more_data)
1603 {
1604         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1605
1606         /* Called when we need to transmit (a) frame(s) from agg queue */
1607
1608         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1609                                           tids, more_data, true);
1610 }
1611
1612 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1613                                    struct ieee80211_vif *vif,
1614                                    enum sta_notify_cmd cmd,
1615                                    struct ieee80211_sta *sta)
1616 {
1617         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1618         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1619         int tid;
1620
1621         switch (cmd) {
1622         case STA_NOTIFY_SLEEP:
1623                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1624                         ieee80211_sta_block_awake(hw, sta, true);
1625                 spin_lock_bh(&mvmsta->lock);
1626                 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1627                         struct iwl_mvm_tid_data *tid_data;
1628
1629                         tid_data = &mvmsta->tid_data[tid];
1630                         if (tid_data->state != IWL_AGG_ON &&
1631                             tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1632                                 continue;
1633                         if (iwl_mvm_tid_queued(tid_data) == 0)
1634                                 continue;
1635                         ieee80211_sta_set_buffered(sta, tid, true);
1636                 }
1637                 spin_unlock_bh(&mvmsta->lock);
1638                 /*
1639                  * The fw updates the STA to be asleep. Tx packets on the Tx
1640                  * queues to this station will not be transmitted. The fw will
1641                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1642                  */
1643                 break;
1644         case STA_NOTIFY_AWAKE:
1645                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1646                         break;
1647                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1648                 break;
1649         default:
1650                 break;
1651         }
1652 }
1653
1654 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1655                                        struct ieee80211_vif *vif,
1656                                        struct ieee80211_sta *sta)
1657 {
1658         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1659         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1660
1661         /*
1662          * This is called before mac80211 does RCU synchronisation,
1663          * so here we already invalidate our internal RCU-protected
1664          * station pointer. The rest of the code will thus no longer
1665          * be able to find the station this way, and we don't rely
1666          * on further RCU synchronisation after the sta_state()
1667          * callback deleted the station.
1668          */
1669         mutex_lock(&mvm->mutex);
1670         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1671                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1672                                    ERR_PTR(-ENOENT));
1673         mutex_unlock(&mvm->mutex);
1674 }
1675
1676 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1677                                  struct ieee80211_vif *vif,
1678                                  struct ieee80211_sta *sta,
1679                                  enum ieee80211_sta_state old_state,
1680                                  enum ieee80211_sta_state new_state)
1681 {
1682         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1683         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1684         int ret;
1685
1686         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1687                            sta->addr, old_state, new_state);
1688
1689         /* this would be a mac80211 bug ... but don't crash */
1690         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1691                 return -EINVAL;
1692
1693         /* if a STA is being removed, reuse its ID */
1694         flush_work(&mvm->sta_drained_wk);
1695
1696         mutex_lock(&mvm->mutex);
1697         if (old_state == IEEE80211_STA_NOTEXIST &&
1698             new_state == IEEE80211_STA_NONE) {
1699                 /*
1700                  * Firmware bug - it'll crash if the beacon interval is less
1701                  * than 16. We can't avoid connecting at all, so refuse the
1702                  * station state change, this will cause mac80211 to abandon
1703                  * attempts to connect to this AP, and eventually wpa_s will
1704                  * blacklist the AP...
1705                  */
1706                 if (vif->type == NL80211_IFTYPE_STATION &&
1707                     vif->bss_conf.beacon_int < 16) {
1708                         IWL_ERR(mvm,
1709                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1710                                 sta->addr, vif->bss_conf.beacon_int);
1711                         ret = -EINVAL;
1712                         goto out_unlock;
1713                 }
1714                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1715         } else if (old_state == IEEE80211_STA_NONE &&
1716                    new_state == IEEE80211_STA_AUTH) {
1717                 /*
1718                  * EBS may be disabled due to previous failures reported by FW.
1719                  * Reset EBS status here assuming environment has been changed.
1720                  */
1721                 mvm->last_ebs_successful = true;
1722                 ret = 0;
1723         } else if (old_state == IEEE80211_STA_AUTH &&
1724                    new_state == IEEE80211_STA_ASSOC) {
1725                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1726                 if (ret == 0)
1727                         iwl_mvm_rs_rate_init(mvm, sta,
1728                                              mvmvif->phy_ctxt->channel->band,
1729                                              true);
1730         } else if (old_state == IEEE80211_STA_ASSOC &&
1731                    new_state == IEEE80211_STA_AUTHORIZED) {
1732                 /* enable beacon filtering */
1733                 if (vif->bss_conf.dtim_period)
1734                         WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif,
1735                                                              CMD_SYNC));
1736                 ret = 0;
1737         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1738                    new_state == IEEE80211_STA_ASSOC) {
1739                 /* disable beacon filtering */
1740                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC));
1741                 ret = 0;
1742         } else if (old_state == IEEE80211_STA_ASSOC &&
1743                    new_state == IEEE80211_STA_AUTH) {
1744                 ret = 0;
1745         } else if (old_state == IEEE80211_STA_AUTH &&
1746                    new_state == IEEE80211_STA_NONE) {
1747                 ret = 0;
1748         } else if (old_state == IEEE80211_STA_NONE &&
1749                    new_state == IEEE80211_STA_NOTEXIST) {
1750                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1751         } else {
1752                 ret = -EIO;
1753         }
1754  out_unlock:
1755         mutex_unlock(&mvm->mutex);
1756
1757         return ret;
1758 }
1759
1760 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1761 {
1762         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1763
1764         mvm->rts_threshold = value;
1765
1766         return 0;
1767 }
1768
1769 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1770                                   struct ieee80211_vif *vif,
1771                                   struct ieee80211_sta *sta, u32 changed)
1772 {
1773         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1774
1775         if (vif->type == NL80211_IFTYPE_STATION &&
1776             changed & IEEE80211_RC_NSS_CHANGED)
1777                 iwl_mvm_sf_update(mvm, vif, false);
1778 }
1779
1780 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1781                                struct ieee80211_vif *vif, u16 ac,
1782                                const struct ieee80211_tx_queue_params *params)
1783 {
1784         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1785         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1786
1787         mvmvif->queue_params[ac] = *params;
1788
1789         /*
1790          * No need to update right away, we'll get BSS_CHANGED_QOS
1791          * The exception is P2P_DEVICE interface which needs immediate update.
1792          */
1793         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1794                 int ret;
1795
1796                 mutex_lock(&mvm->mutex);
1797                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1798                 mutex_unlock(&mvm->mutex);
1799                 return ret;
1800         }
1801         return 0;
1802 }
1803
1804 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1805                                       struct ieee80211_vif *vif)
1806 {
1807         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1808         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1809                            200 + vif->bss_conf.beacon_int);
1810         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1811                                100 + vif->bss_conf.beacon_int);
1812
1813         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1814                 return;
1815
1816         mutex_lock(&mvm->mutex);
1817         /* Try really hard to protect the session and hear a beacon */
1818         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1819         mutex_unlock(&mvm->mutex);
1820 }
1821
1822 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1823                                         struct ieee80211_vif *vif,
1824                                         struct cfg80211_sched_scan_request *req,
1825                                         struct ieee80211_sched_scan_ies *ies)
1826 {
1827         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1828         int ret;
1829
1830         mutex_lock(&mvm->mutex);
1831
1832         if (!iwl_mvm_is_idle(mvm)) {
1833                 ret = -EBUSY;
1834                 goto out;
1835         }
1836
1837         switch (mvm->scan_status) {
1838         case IWL_MVM_SCAN_OS:
1839                 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
1840                 ret = iwl_mvm_cancel_scan(mvm);
1841                 if (ret) {
1842                         ret = -EBUSY;
1843                         goto out;
1844                 }
1845
1846                 /*
1847                  * iwl_mvm_rx_scan_complete() will be called soon but will
1848                  * not reset the scan status as it won't be IWL_MVM_SCAN_OS
1849                  * any more since we queue the next scan immediately (below).
1850                  * We make sure it is called before the next scan starts by
1851                  * flushing the async-handlers work.
1852                  */
1853                 break;
1854         case IWL_MVM_SCAN_NONE:
1855                 break;
1856         default:
1857                 ret = -EBUSY;
1858                 goto out;
1859         }
1860
1861         mvm->scan_status = IWL_MVM_SCAN_SCHED;
1862
1863         ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1864         if (ret)
1865                 goto err;
1866
1867         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1868         if (ret)
1869                 goto err;
1870
1871         ret = iwl_mvm_sched_scan_start(mvm, req);
1872         if (!ret)
1873                 goto out;
1874 err:
1875         mvm->scan_status = IWL_MVM_SCAN_NONE;
1876 out:
1877         mutex_unlock(&mvm->mutex);
1878         /* make sure to flush the Rx handler before the next scan arrives */
1879         iwl_mvm_wait_for_async_handlers(mvm);
1880         return ret;
1881 }
1882
1883 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1884                                        struct ieee80211_vif *vif)
1885 {
1886         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1887         int ret;
1888
1889         mutex_lock(&mvm->mutex);
1890         ret = iwl_mvm_sched_scan_stop(mvm);
1891         mutex_unlock(&mvm->mutex);
1892         iwl_mvm_wait_for_async_handlers(mvm);
1893
1894         return ret;
1895 }
1896
1897 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1898                                enum set_key_cmd cmd,
1899                                struct ieee80211_vif *vif,
1900                                struct ieee80211_sta *sta,
1901                                struct ieee80211_key_conf *key)
1902 {
1903         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1904         int ret;
1905
1906         if (iwlwifi_mod_params.sw_crypto) {
1907                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1908                 return -EOPNOTSUPP;
1909         }
1910
1911         switch (key->cipher) {
1912         case WLAN_CIPHER_SUITE_TKIP:
1913                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1914                 /* fall-through */
1915         case WLAN_CIPHER_SUITE_CCMP:
1916                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1917                 break;
1918         case WLAN_CIPHER_SUITE_AES_CMAC:
1919                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1920                 break;
1921         case WLAN_CIPHER_SUITE_WEP40:
1922         case WLAN_CIPHER_SUITE_WEP104:
1923                 /*
1924                  * Support for TX only, at least for now, so accept
1925                  * the key and do nothing else. Then mac80211 will
1926                  * pass it for TX but we don't have to use it for RX.
1927                  */
1928                 return 0;
1929         default:
1930                 /* currently FW supports only one optional cipher scheme */
1931                 if (hw->n_cipher_schemes &&
1932                     hw->cipher_schemes->cipher == key->cipher)
1933                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1934                 else
1935                         return -EOPNOTSUPP;
1936         }
1937
1938         mutex_lock(&mvm->mutex);
1939
1940         switch (cmd) {
1941         case SET_KEY:
1942                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1943                      vif->type == NL80211_IFTYPE_AP) && !sta) {
1944                         /*
1945                          * GTK on AP interface is a TX-only key, return 0;
1946                          * on IBSS they're per-station and because we're lazy
1947                          * we don't support them for RX, so do the same.
1948                          */
1949                         ret = 0;
1950                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1951                         break;
1952                 }
1953
1954                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1955                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1956                 if (ret) {
1957                         IWL_WARN(mvm, "set key failed\n");
1958                         /*
1959                          * can't add key for RX, but we don't need it
1960                          * in the device for TX so still return 0
1961                          */
1962                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1963                         ret = 0;
1964                 }
1965
1966                 break;
1967         case DISABLE_KEY:
1968                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1969                         ret = 0;
1970                         break;
1971                 }
1972
1973                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1974                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1975                 break;
1976         default:
1977                 ret = -EINVAL;
1978         }
1979
1980         mutex_unlock(&mvm->mutex);
1981         return ret;
1982 }
1983
1984 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1985                                         struct ieee80211_vif *vif,
1986                                         struct ieee80211_key_conf *keyconf,
1987                                         struct ieee80211_sta *sta,
1988                                         u32 iv32, u16 *phase1key)
1989 {
1990         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1991
1992         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1993                 return;
1994
1995         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1996 }
1997
1998
1999 static int iwl_mvm_roc(struct ieee80211_hw *hw,
2000                        struct ieee80211_vif *vif,
2001                        struct ieee80211_channel *channel,
2002                        int duration,
2003                        enum ieee80211_roc_type type)
2004 {
2005         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2006         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2007         struct cfg80211_chan_def chandef;
2008         struct iwl_mvm_phy_ctxt *phy_ctxt;
2009         int ret, i;
2010
2011         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2012                            duration, type);
2013
2014         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
2015                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
2016                 return -EINVAL;
2017         }
2018
2019         mutex_lock(&mvm->mutex);
2020
2021         for (i = 0; i < NUM_PHY_CTX; i++) {
2022                 phy_ctxt = &mvm->phy_ctxts[i];
2023                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2024                         continue;
2025
2026                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2027                         /*
2028                          * Unbind the P2P_DEVICE from the current PHY context,
2029                          * and if the PHY context is not used remove it.
2030                          */
2031                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
2032                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2033                                 goto out_unlock;
2034
2035                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2036
2037                         /* Bind the P2P_DEVICE to the current PHY Context */
2038                         mvmvif->phy_ctxt = phy_ctxt;
2039
2040                         ret = iwl_mvm_binding_add_vif(mvm, vif);
2041                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2042                                 goto out_unlock;
2043
2044                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2045                         goto schedule_time_event;
2046                 }
2047         }
2048
2049         /* Need to update the PHY context only if the ROC channel changed */
2050         if (channel == mvmvif->phy_ctxt->channel)
2051                 goto schedule_time_event;
2052
2053         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
2054
2055         /*
2056          * Change the PHY context configuration as it is currently referenced
2057          * only by the P2P Device MAC
2058          */
2059         if (mvmvif->phy_ctxt->ref == 1) {
2060                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2061                                                &chandef, 1, 1);
2062                 if (ret)
2063                         goto out_unlock;
2064         } else {
2065                 /*
2066                  * The PHY context is shared with other MACs. Need to remove the
2067                  * P2P Device from the binding, allocate an new PHY context and
2068                  * create a new binding
2069                  */
2070                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2071                 if (!phy_ctxt) {
2072                         ret = -ENOSPC;
2073                         goto out_unlock;
2074                 }
2075
2076                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2077                                                1, 1);
2078                 if (ret) {
2079                         IWL_ERR(mvm, "Failed to change PHY context\n");
2080                         goto out_unlock;
2081                 }
2082
2083                 /* Unbind the P2P_DEVICE from the current PHY context */
2084                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2085                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2086                         goto out_unlock;
2087
2088                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2089
2090                 /* Bind the P2P_DEVICE to the new allocated PHY context */
2091                 mvmvif->phy_ctxt = phy_ctxt;
2092
2093                 ret = iwl_mvm_binding_add_vif(mvm, vif);
2094                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2095                         goto out_unlock;
2096
2097                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2098         }
2099
2100 schedule_time_event:
2101         /* Schedule the time events */
2102         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
2103
2104 out_unlock:
2105         mutex_unlock(&mvm->mutex);
2106         IWL_DEBUG_MAC80211(mvm, "leave\n");
2107         return ret;
2108 }
2109
2110 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2111 {
2112         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2113
2114         IWL_DEBUG_MAC80211(mvm, "enter\n");
2115
2116         mutex_lock(&mvm->mutex);
2117         iwl_mvm_stop_p2p_roc(mvm);
2118         mutex_unlock(&mvm->mutex);
2119
2120         IWL_DEBUG_MAC80211(mvm, "leave\n");
2121         return 0;
2122 }
2123
2124 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2125                                struct ieee80211_chanctx_conf *ctx)
2126 {
2127         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2128         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2129         struct iwl_mvm_phy_ctxt *phy_ctxt;
2130         int ret;
2131
2132         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
2133
2134         mutex_lock(&mvm->mutex);
2135         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2136         if (!phy_ctxt) {
2137                 ret = -ENOSPC;
2138                 goto out;
2139         }
2140
2141         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2142                                        ctx->rx_chains_static,
2143                                        ctx->rx_chains_dynamic);
2144         if (ret) {
2145                 IWL_ERR(mvm, "Failed to add PHY context\n");
2146                 goto out;
2147         }
2148
2149         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
2150         *phy_ctxt_id = phy_ctxt->id;
2151 out:
2152         mutex_unlock(&mvm->mutex);
2153         return ret;
2154 }
2155
2156 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2157                                    struct ieee80211_chanctx_conf *ctx)
2158 {
2159         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2160         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2161         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2162
2163         mutex_lock(&mvm->mutex);
2164         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2165         mutex_unlock(&mvm->mutex);
2166 }
2167
2168 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2169                                    struct ieee80211_chanctx_conf *ctx,
2170                                    u32 changed)
2171 {
2172         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2173         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2174         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2175
2176         if (WARN_ONCE((phy_ctxt->ref > 1) &&
2177                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2178                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2179                                    IEEE80211_CHANCTX_CHANGE_RADAR |
2180                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
2181                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
2182                       phy_ctxt->ref, changed))
2183                 return;
2184
2185         mutex_lock(&mvm->mutex);
2186         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
2187                                  ctx->rx_chains_static,
2188                                  ctx->rx_chains_dynamic);
2189         iwl_mvm_bt_coex_vif_change(mvm);
2190         mutex_unlock(&mvm->mutex);
2191 }
2192
2193 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2194                                       struct ieee80211_vif *vif,
2195                                       struct ieee80211_chanctx_conf *ctx)
2196 {
2197         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2198         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2199         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2200         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2201         int ret;
2202
2203         mutex_lock(&mvm->mutex);
2204
2205         mvmvif->phy_ctxt = phy_ctxt;
2206
2207         switch (vif->type) {
2208         case NL80211_IFTYPE_AP:
2209                 /* Unless it's a CSA flow we have nothing to do here */
2210                 if (vif->csa_active) {
2211                         mvmvif->ap_ibss_active = true;
2212                         break;
2213                 }
2214         case NL80211_IFTYPE_ADHOC:
2215                 /*
2216                  * The AP binding flow is handled as part of the start_ap flow
2217                  * (in bss_info_changed), similarly for IBSS.
2218                  */
2219                 ret = 0;
2220                 goto out_unlock;
2221         case NL80211_IFTYPE_STATION:
2222         case NL80211_IFTYPE_MONITOR:
2223                 break;
2224         default:
2225                 ret = -EINVAL;
2226                 goto out_unlock;
2227         }
2228
2229         ret = iwl_mvm_binding_add_vif(mvm, vif);
2230         if (ret)
2231                 goto out_unlock;
2232
2233         /*
2234          * Power state must be updated before quotas,
2235          * otherwise fw will complain.
2236          */
2237         iwl_mvm_power_update_mac(mvm, vif);
2238
2239         /* Setting the quota at this stage is only required for monitor
2240          * interfaces. For the other types, the bss_info changed flow
2241          * will handle quota settings.
2242          */
2243         if (vif->type == NL80211_IFTYPE_MONITOR) {
2244                 mvmvif->monitor_active = true;
2245                 ret = iwl_mvm_update_quotas(mvm, vif);
2246                 if (ret)
2247                         goto out_remove_binding;
2248         }
2249
2250         /* Handle binding during CSA */
2251         if (vif->type == NL80211_IFTYPE_AP) {
2252                 iwl_mvm_update_quotas(mvm, vif);
2253                 iwl_mvm_mac_ctxt_changed(mvm, vif);
2254         }
2255
2256         goto out_unlock;
2257
2258  out_remove_binding:
2259         iwl_mvm_binding_remove_vif(mvm, vif);
2260         iwl_mvm_power_update_mac(mvm, vif);
2261  out_unlock:
2262         mutex_unlock(&mvm->mutex);
2263         if (ret)
2264                 mvmvif->phy_ctxt = NULL;
2265         return ret;
2266 }
2267
2268 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2269                                          struct ieee80211_vif *vif,
2270                                          struct ieee80211_chanctx_conf *ctx)
2271 {
2272         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2273         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2274
2275         mutex_lock(&mvm->mutex);
2276
2277         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2278
2279         switch (vif->type) {
2280         case NL80211_IFTYPE_ADHOC:
2281                 goto out_unlock;
2282         case NL80211_IFTYPE_MONITOR:
2283                 mvmvif->monitor_active = false;
2284                 iwl_mvm_update_quotas(mvm, NULL);
2285                 break;
2286         case NL80211_IFTYPE_AP:
2287                 /* This part is triggered only during CSA */
2288                 if (!vif->csa_active || !mvmvif->ap_ibss_active)
2289                         goto out_unlock;
2290
2291                 mvmvif->ap_ibss_active = false;
2292                 iwl_mvm_update_quotas(mvm, NULL);
2293                 /*TODO: bt_coex notification here? */
2294         default:
2295                 break;
2296         }
2297
2298         iwl_mvm_binding_remove_vif(mvm, vif);
2299         iwl_mvm_power_update_mac(mvm, vif);
2300
2301 out_unlock:
2302         mvmvif->phy_ctxt = NULL;
2303         mutex_unlock(&mvm->mutex);
2304 }
2305
2306 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2307                            struct ieee80211_sta *sta,
2308                            bool set)
2309 {
2310         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2311         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2312
2313         if (!mvm_sta || !mvm_sta->vif) {
2314                 IWL_ERR(mvm, "Station is not associated to a vif\n");
2315                 return -EINVAL;
2316         }
2317
2318         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2319 }
2320
2321 #ifdef CONFIG_NL80211_TESTMODE
2322 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2323         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2324         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
2325         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
2326 };
2327
2328 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2329                                       struct ieee80211_vif *vif,
2330                                       void *data, int len)
2331 {
2332         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2333         int err;
2334         u32 noa_duration;
2335
2336         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2337         if (err)
2338                 return err;
2339
2340         if (!tb[IWL_MVM_TM_ATTR_CMD])
2341                 return -EINVAL;
2342
2343         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2344         case IWL_MVM_TM_CMD_SET_NOA:
2345                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2346                     !vif->bss_conf.enable_beacon ||
2347                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2348                         return -EINVAL;
2349
2350                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2351                 if (noa_duration >= vif->bss_conf.beacon_int)
2352                         return -EINVAL;
2353
2354                 mvm->noa_duration = noa_duration;
2355                 mvm->noa_vif = vif;
2356
2357                 return iwl_mvm_update_quotas(mvm, NULL);
2358         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2359                 /* must be associated client vif - ignore authorized */
2360                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2361                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2362                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2363                         return -EINVAL;
2364
2365                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
2366                         return iwl_mvm_enable_beacon_filter(mvm, vif,
2367                                                             CMD_SYNC);
2368                 return iwl_mvm_disable_beacon_filter(mvm, vif, CMD_SYNC);
2369         }
2370
2371         return -EOPNOTSUPP;
2372 }
2373
2374 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2375                                     struct ieee80211_vif *vif,
2376                                     void *data, int len)
2377 {
2378         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2379         int err;
2380
2381         mutex_lock(&mvm->mutex);
2382         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2383         mutex_unlock(&mvm->mutex);
2384
2385         return err;
2386 }
2387 #endif
2388
2389 static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2390                                           struct ieee80211_vif *vif,
2391                                           struct cfg80211_chan_def *chandef)
2392 {
2393         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2394
2395         mutex_lock(&mvm->mutex);
2396         if (WARN(mvm->csa_vif && mvm->csa_vif->csa_active,
2397                  "Another CSA is already in progress"))
2398                 goto out_unlock;
2399
2400         IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2401                            chandef->center_freq1);
2402         mvm->csa_vif = vif;
2403
2404 out_unlock:
2405         mutex_unlock(&mvm->mutex);
2406 }
2407
2408 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2409                               struct ieee80211_vif *vif, u32 queues, bool drop)
2410 {
2411         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2412         struct iwl_mvm_vif *mvmvif;
2413         struct iwl_mvm_sta *mvmsta;
2414
2415         if (!vif || vif->type != NL80211_IFTYPE_STATION)
2416                 return;
2417
2418         mutex_lock(&mvm->mutex);
2419         mvmvif = iwl_mvm_vif_from_mac80211(vif);
2420         mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2421
2422         if (WARN_ON_ONCE(!mvmsta))
2423                 goto done;
2424
2425         if (drop) {
2426                 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2427                         IWL_ERR(mvm, "flush request fail\n");
2428         } else {
2429                 iwl_trans_wait_tx_queue_empty(mvm->trans,
2430                                               mvmsta->tfd_queue_msk);
2431         }
2432 done:
2433         mutex_unlock(&mvm->mutex);
2434 }
2435
2436 const struct ieee80211_ops iwl_mvm_hw_ops = {
2437         .tx = iwl_mvm_mac_tx,
2438         .ampdu_action = iwl_mvm_mac_ampdu_action,
2439         .start = iwl_mvm_mac_start,
2440         .restart_complete = iwl_mvm_mac_restart_complete,
2441         .stop = iwl_mvm_mac_stop,
2442         .add_interface = iwl_mvm_mac_add_interface,
2443         .remove_interface = iwl_mvm_mac_remove_interface,
2444         .config = iwl_mvm_mac_config,
2445         .prepare_multicast = iwl_mvm_prepare_multicast,
2446         .configure_filter = iwl_mvm_configure_filter,
2447         .bss_info_changed = iwl_mvm_bss_info_changed,
2448         .hw_scan = iwl_mvm_mac_hw_scan,
2449         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
2450         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
2451         .sta_state = iwl_mvm_mac_sta_state,
2452         .sta_notify = iwl_mvm_mac_sta_notify,
2453         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
2454         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
2455         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
2456         .sta_rc_update = iwl_mvm_sta_rc_update,
2457         .conf_tx = iwl_mvm_mac_conf_tx,
2458         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
2459         .flush = iwl_mvm_mac_flush,
2460         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2461         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
2462         .set_key = iwl_mvm_mac_set_key,
2463         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2464         .remain_on_channel = iwl_mvm_roc,
2465         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
2466         .add_chanctx = iwl_mvm_add_chanctx,
2467         .remove_chanctx = iwl_mvm_remove_chanctx,
2468         .change_chanctx = iwl_mvm_change_chanctx,
2469         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2470         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
2471
2472         .start_ap = iwl_mvm_start_ap_ibss,
2473         .stop_ap = iwl_mvm_stop_ap_ibss,
2474         .join_ibss = iwl_mvm_start_ap_ibss,
2475         .leave_ibss = iwl_mvm_stop_ap_ibss,
2476
2477         .set_tim = iwl_mvm_set_tim,
2478
2479         .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
2480
2481         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2482
2483 #ifdef CONFIG_PM_SLEEP
2484         /* look at d3.c */
2485         .suspend = iwl_mvm_suspend,
2486         .resume = iwl_mvm_resume,
2487         .set_wakeup = iwl_mvm_set_wakeup,
2488         .set_rekey_data = iwl_mvm_set_rekey_data,
2489 #if IS_ENABLED(CONFIG_IPV6)
2490         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2491 #endif
2492         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2493 #endif
2494 };