Quelle  mac80211.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright (C) 2012-2014, 2018-2025 Intel Corporation
 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
 * Copyright (C) 2016-2017 Intel Deutschland GmbH
 */
#include <linux/kernel.h>
#include <linux/fips.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/if_arp.h>
#include <linux/time.h>
#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
#include <net/tcp.h>

#include "iwl-drv.h"
#include "iwl-op-mode.h"
#include "iwl-io.h"
#include "mvm.h"
#include "sta.h"
#include "time-event.h"
#include "iwl-nvm-utils.h"
#include "iwl-phy-db.h"
#include "testmode.h"
#include "fw/error-dump.h"
#include "iwl-prph.h"
#include "iwl-nvm-parse.h"
#include "time-sync.h"

#define IWL_MVM_LIMITS(ap)     \
 {       \
  .max = 1,     \
  .types = BIT(NL80211_IFTYPE_STATION),  \
 },       \
 {       \
  .max = 1,     \
  .types = ap |     \
    BIT(NL80211_IFTYPE_P2P_CLIENT) | \
    BIT(NL80211_IFTYPE_P2P_GO),  \
 },       \
 {       \
  .max = 1,     \
  .types = BIT(NL80211_IFTYPE_P2P_DEVICE), \
 }

static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
 IWL_MVM_LIMITS(0)
};

static const struct ieee80211_iface_limit iwl_mvm_limits_ap[] = {
 IWL_MVM_LIMITS(BIT(NL80211_IFTYPE_AP))
};

static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 {
  .num_different_channels = 2,
  .max_interfaces = 3,
  .limits = iwl_mvm_limits,
  .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 },
 {
  .num_different_channels = 1,
  .max_interfaces = 3,
  .limits = iwl_mvm_limits_ap,
  .n_limits = ARRAY_SIZE(iwl_mvm_limits_ap),
 },
};

static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
 .max_peers = IWL_TOF_MAX_APS,
 .report_ap_tsf = 1,
 .randomize_mac_addr = 1,

 .ftm = {
  .supported = 1,
  .asap = 1,
  .non_asap = 1,
  .request_lci = 1,
  .request_civicloc = 1,
  .trigger_based = 1,
  .non_trigger_based = 1,
  .max_bursts_exponent = -1, /* all supported */
  .max_ftms_per_burst = 0, /* no limits */
  .bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
         BIT(NL80211_CHAN_WIDTH_20) |
         BIT(NL80211_CHAN_WIDTH_40) |
         BIT(NL80211_CHAN_WIDTH_80) |
         BIT(NL80211_CHAN_WIDTH_160),
  .preambles = BIT(NL80211_PREAMBLE_LEGACY) |
        BIT(NL80211_PREAMBLE_HT) |
        BIT(NL80211_PREAMBLE_VHT) |
        BIT(NL80211_PREAMBLE_HE),
 },
};

static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
     enum set_key_cmd cmd,
     struct ieee80211_vif *vif,
     struct ieee80211_sta *sta,
     struct ieee80211_key_conf *key);

static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
{
 int i;

 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 for (i = 0; i < NUM_PHY_CTX; i++) {
  mvm->phy_ctxts[i].id = i;
  mvm->phy_ctxts[i].ref = 0;
 }
}

struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
        const char *alpha2,
        enum iwl_mcc_source src_id,
        bool *changed)
{
 struct ieee80211_regdomain *regd = NULL;
 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mcc_update_resp_v8 *resp;
 u8 resp_ver;

 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);

 lockdep_assert_held(&mvm->mutex);

 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 if (IS_ERR_OR_NULL(resp)) {
  IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
         PTR_ERR_OR_ZERO(resp));
  resp = NULL;
  goto out;
 }

 if (changed) {
  u32 status = le32_to_cpu(resp->status);

  *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
       status == MCC_RESP_ILLEGAL);
 }
 resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
        MCC_UPDATE_CMD, 0);
 IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver);

 regd = iwl_parse_nvm_mcc_info(mvm->trans,
          __le32_to_cpu(resp->n_channels),
          resp->channels,
          __le16_to_cpu(resp->mcc),
          __le16_to_cpu(resp->geo_info),
          le32_to_cpu(resp->cap), resp_ver);
 /* Store the return source id */
 src_id = resp->source_id;
 if (IS_ERR_OR_NULL(regd)) {
  IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
         PTR_ERR_OR_ZERO(regd));
  goto out;
 }

 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
        regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 mvm->lar_regdom_set = true;
 mvm->mcc_src = src_id;

 iwl_mei_set_country_code(__le16_to_cpu(resp->mcc));

out:
 kfree(resp);
 return regd;
}

void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
{
 bool changed;
 struct ieee80211_regdomain *regd;

 if (!iwl_mvm_is_lar_supported(mvm))
  return;

 regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 if (!IS_ERR_OR_NULL(regd)) {
  /* only update the regulatory core if changed */
  if (changed)
   regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);

  kfree(regd);
 }
}

struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
         bool *changed)
{
 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
         iwl_mvm_is_wifi_mcc_supported(mvm) ?
         MCC_SOURCE_GET_CURRENT :
         MCC_SOURCE_OLD_FW, changed);
}

int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm, bool force_regd_sync)
{
 enum iwl_mcc_source used_src;
 struct ieee80211_regdomain *regd;
 int ret;
 bool changed;
 const struct ieee80211_regdomain *r =
   wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd);

 if (!r)
  return -ENOENT;

 /* save the last source in case we overwrite it below */
 used_src = mvm->mcc_src;
 if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
  /* Notify the firmware we support wifi location updates */
  regd = iwl_mvm_get_current_regdomain(mvm, NULL);
  if (!IS_ERR_OR_NULL(regd))
   kfree(regd);
 }

 /* Now set our last stored MCC and source */
 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
         &changed);
 if (IS_ERR_OR_NULL(regd))
  return -EIO;

 /* update cfg80211 if the regdomain was changed or the caller explicitly
 * asked to update regdomain
 */
 if (changed || force_regd_sync)
  ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
 else
  ret = 0;

 kfree(regd);
 return ret;
}

/* Each capability added here should also be add to tm_if_types_ext_capa_sta */
static const u8 he_if_types_ext_capa_sta[] = {
  [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
  [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
  [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF |
        WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB,
  [8] = WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB,
};

static const u8 tm_if_types_ext_capa_sta[] = {
  [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
  [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT |
        WLAN_EXT_CAPA3_TIMING_MEASUREMENT_SUPPORT,
  [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF |
        WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB,
  [8] = WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB,
  [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT,
};

/* Additional interface types for which extended capabilities are
 * specified separately
 */

#define IWL_MVM_EMLSR_CAPA (IEEE80211_EML_CAP_EMLSR_SUPP | \
     IEEE80211_EML_CAP_EMLSR_PADDING_DELAY_32US << \
     __bf_shf(IEEE80211_EML_CAP_EMLSR_PADDING_DELAY) | \
     IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY_64US << \
     __bf_shf(IEEE80211_EML_CAP_EMLSR_TRANSITION_DELAY))
#define IWL_MVM_MLD_CAPA_OPS (FIELD_PREP_CONST( \
   IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP, \
   IEEE80211_MLD_CAP_OP_TID_TO_LINK_MAP_NEG_SUPP_SAME) | \
   IEEE80211_MLD_CAP_OP_LINK_RECONF_SUPPORT)

static const struct wiphy_iftype_ext_capab add_iftypes_ext_capa[] = {
 {
  .iftype = NL80211_IFTYPE_STATION,
  .extended_capabilities = he_if_types_ext_capa_sta,
  .extended_capabilities_mask = he_if_types_ext_capa_sta,
  .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
  /* relevant only if EHT is supported */
  .eml_capabilities = IWL_MVM_EMLSR_CAPA,
  .mld_capa_and_ops = IWL_MVM_MLD_CAPA_OPS,
 },
 {
  .iftype = NL80211_IFTYPE_STATION,
  .extended_capabilities = tm_if_types_ext_capa_sta,
  .extended_capabilities_mask = tm_if_types_ext_capa_sta,
  .extended_capabilities_len = sizeof(tm_if_types_ext_capa_sta),
  /* relevant only if EHT is supported */
  .eml_capabilities = IWL_MVM_EMLSR_CAPA,
  .mld_capa_and_ops = IWL_MVM_MLD_CAPA_OPS,
 },
};

int iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, int radio_idx,
      u32 *tx_ant, u32 *rx_ant)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
 return 0;
}

int iwl_mvm_op_set_antenna(struct ieee80211_hw *hw, int radio_idx, u32 tx_ant,
      u32 rx_ant)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

 /* This has been tested on those devices only */
 if (mvm->trans->mac_cfg->device_family != IWL_DEVICE_FAMILY_9000 &&
     mvm->trans->mac_cfg->device_family != IWL_DEVICE_FAMILY_22000 &&
     mvm->trans->mac_cfg->device_family != IWL_DEVICE_FAMILY_AX210)
  return -EOPNOTSUPP;

 if (!mvm->nvm_data)
  return -EBUSY;

 /* mac80211 ensures the device is not started,
 * so the firmware cannot be running
 */

 mvm->set_tx_ant = tx_ant;
 mvm->set_rx_ant = rx_ant;

 iwl_reinit_cab(mvm->trans, mvm->nvm_data, tx_ant, rx_ant, mvm->fw);

 return 0;
}

int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
{
 struct ieee80211_hw *hw = mvm->hw;
 int num_mac, ret, i;
 static const u32 mvm_ciphers[] = {
  WLAN_CIPHER_SUITE_WEP40,
  WLAN_CIPHER_SUITE_WEP104,
  WLAN_CIPHER_SUITE_TKIP,
  WLAN_CIPHER_SUITE_CCMP,
 };
#ifdef CONFIG_PM_SLEEP
 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
       IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
#endif
 u32 sec_key_id = WIDE_ID(DATA_PATH_GROUP, SEC_KEY_CMD);
 u8 sec_key_ver = iwl_fw_lookup_cmd_ver(mvm->fw, sec_key_id, 0);

 /* Tell mac80211 our characteristics */
 ieee80211_hw_set(hw, SIGNAL_DBM);
 ieee80211_hw_set(hw, SPECTRUM_MGMT);
 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 ieee80211_hw_set(hw, SUPPORTS_PS);
 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 ieee80211_hw_set(hw, CONNECTION_MONITOR);
 ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
 ieee80211_hw_set(hw, STA_MMPDU_TXQ);

 /* Set this early since we need to have it for the check below */
 if (mvm->mld_api_is_used && mvm->nvm_data->sku_cap_11be_enable &&
     !iwlwifi_mod_params.disable_11ax &&
     !iwlwifi_mod_params.disable_11be) {
  hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO;
  /* we handle this already earlier, but need it for MLO */
  ieee80211_hw_set(hw, HANDLES_QUIET_CSA);
 }

 /* With MLD FW API, it tracks timing by itself,
 * no need for any timing from the host
 */
 if (!mvm->mld_api_is_used)
  ieee80211_hw_set(hw, TIMING_BEACON_ONLY);

 /*
 * On older devices, enabling TX A-MSDU occasionally leads to
 * something getting messed up, the command read from the FIFO
 * gets out of sync and isn't a TX command, so that we have an
 * assert EDC.
 *
 * It's not clear where the bug is, but since we didn't used to
 * support A-MSDU until moving the mac80211 iTXQs, just leave it
 * for older devices. We also don't see this issue on any newer
 * devices.
 */
 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
  ieee80211_hw_set(hw, TX_AMSDU);
 ieee80211_hw_set(hw, TX_FRAG_LIST);

 if (iwl_mvm_has_tlc_offload(mvm)) {
  ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
  ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 }

 /* We want to use the mac80211's reorder buffer for 9000 */
 if (iwl_mvm_has_new_rx_api(mvm) &&
     mvm->trans->mac_cfg->device_family > IWL_DEVICE_FAMILY_9000)
  ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
  ieee80211_hw_set(hw, AP_LINK_PS);
 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
  /*
 * we absolutely need this for the new TX API since that comes
 * with many more queues than the current code can deal with
 * for station powersave
 */
  return -EINVAL;
 }

 if (mvm->trans->info.num_rxqs > 1)
  ieee80211_hw_set(hw, USES_RSS);

 if (mvm->trans->info.max_skb_frags)
  hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;

 hw->queues = IEEE80211_NUM_ACS;
 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
        IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
  IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;

 hw->radiotap_timestamp.units_pos =
  IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
  IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 /* this is the case for CCK frames, it's better (only 8) for OFDM */
 hw->radiotap_timestamp.accuracy = 22;

 if (!iwl_mvm_has_tlc_offload(mvm))
  hw->rate_control_algorithm = RS_NAME;

 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 hw->max_tx_fragments = mvm->trans->info.max_skb_frags;

 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 hw->wiphy->cipher_suites = mvm->ciphers;

 if (iwl_mvm_has_new_rx_api(mvm)) {
  mvm->ciphers[hw->wiphy->n_cipher_suites] =
   WLAN_CIPHER_SUITE_GCMP;
  hw->wiphy->n_cipher_suites++;
  mvm->ciphers[hw->wiphy->n_cipher_suites] =
   WLAN_CIPHER_SUITE_GCMP_256;
  hw->wiphy->n_cipher_suites++;
 }

 if (iwlwifi_mod_params.swcrypto)
  IWL_ERR(mvm,
   "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n");
 if (!iwlwifi_mod_params.bt_coex_active)
  IWL_ERR(mvm,
   "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n");

 if (!fips_enabled)
  ieee80211_hw_set(hw, MFP_CAPABLE);

 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC;
 hw->wiphy->n_cipher_suites++;
 if (iwl_mvm_has_new_rx_api(mvm)) {
  mvm->ciphers[hw->wiphy->n_cipher_suites] =
   WLAN_CIPHER_SUITE_BIP_GMAC_128;
  hw->wiphy->n_cipher_suites++;
  mvm->ciphers[hw->wiphy->n_cipher_suites] =
   WLAN_CIPHER_SUITE_BIP_GMAC_256;
  hw->wiphy->n_cipher_suites++;
 }

 wiphy_ext_feature_set(hw->wiphy,
         NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
 wiphy_ext_feature_set(hw->wiphy,
         NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT);

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
  hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
 }

 /*
 * beacon protection must be handled by firmware,
 * so cannot be done with fips_enabled
 */
 if (!fips_enabled && sec_key_ver &&
     fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_BIGTK_TX_SUPPORT))
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_BEACON_PROTECTION);
 else if (!fips_enabled &&
   fw_has_capa(&mvm->fw->ucode_capa,
        IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT))
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT);

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_TIME_SYNC_BOTH_FTM_TM))
  hw->wiphy->hw_timestamp_max_peers = 1;

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_SPP_AMSDU_SUPPORT))
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_SPP_AMSDU_SUPPORT);

 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 hw->wiphy->features |=
  NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
  NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
  NL80211_FEATURE_ND_RANDOM_MAC_ADDR;

 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 hw->chanctx_data_size = sizeof(u16);
 hw->txq_data_size = sizeof(struct iwl_mvm_txq);

 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
  BIT(NL80211_IFTYPE_P2P_CLIENT) |
  BIT(NL80211_IFTYPE_AP) |
  BIT(NL80211_IFTYPE_P2P_GO) |
  BIT(NL80211_IFTYPE_P2P_DEVICE) |
  BIT(NL80211_IFTYPE_ADHOC);

 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

 /* The new Tx API does not allow to pass the key or keyid of a MPDU to
 * the hw, preventing us to control which key(id) to use per MPDU.
 * Till that's fixed we can't use Extended Key ID for the newer cards.
 */
 if (!iwl_mvm_has_new_tx_api(mvm))
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_EXT_KEY_ID);
 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;

 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 if (iwl_mvm_is_lar_supported(mvm))
  hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 else
  hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
            REGULATORY_DISABLE_BEACON_HINTS;

 if (mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_DFS_CONCURRENT);

 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ;

 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 hw->wiphy->n_iface_combinations =
  ARRAY_SIZE(iwl_mvm_iface_combinations);

 hw->wiphy->max_remain_on_channel_duration = 10000;
 hw->max_listen_interval = IWL_MVM_CONN_LISTEN_INTERVAL;

 /* Extract MAC address */
 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 hw->wiphy->addresses = mvm->addresses;
 hw->wiphy->n_addresses = 1;

 /* Extract additional MAC addresses if available */
 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
  min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;

 for (i = 1; i < num_mac; i++) {
  memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
         ETH_ALEN);
  mvm->addresses[i].addr[5]++;
  hw->wiphy->n_addresses++;
 }

 iwl_mvm_reset_phy_ctxts(mvm);

 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);

 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;

 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 BUILD_BUG_ON(IWL_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
       IWL_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));

 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
  mvm->max_scans = IWL_MAX_UMAC_SCANS;
 else
  mvm->max_scans = IWL_MAX_LMAC_SCANS;

 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
  hw->wiphy->bands[NL80211_BAND_2GHZ] =
   &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
  hw->wiphy->bands[NL80211_BAND_5GHZ] =
   &mvm->nvm_data->bands[NL80211_BAND_5GHZ];

  if (fw_has_capa(&mvm->fw->ucode_capa,
    IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
      fw_has_api(&mvm->fw->ucode_capa,
          IWL_UCODE_TLV_API_LQ_SS_PARAMS))
   hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
    IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 }
 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) &&
     mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels)
  hw->wiphy->bands[NL80211_BAND_6GHZ] =
   &mvm->nvm_data->bands[NL80211_BAND_6GHZ];

 hw->wiphy->hw_version = mvm->trans->info.hw_id;

 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
  hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 else
  hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

 hw->wiphy->max_sched_scan_reqs = 1;
 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw);
 /* we create the 802.11 header and zero length SSID IE. */
 hw->wiphy->max_sched_scan_ie_len =
  SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 hw->wiphy->max_sched_scan_plan_interval = U16_MAX;

 /*
 * the firmware uses u8 for num of iterations, but 0xff is saved for
 * infinite loop, so the maximum number of iterations is actually 254.
 */
 hw->wiphy->max_sched_scan_plan_iterations = 254;

 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
          NL80211_FEATURE_LOW_PRIORITY_SCAN |
          NL80211_FEATURE_P2P_GO_OPPPS |
          NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
          NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;

 /* when firmware supports RLC/SMPS offload, do not set these
 * driver features, since it's no longer supported by driver.
 */
 if (!iwl_mvm_has_rlc_offload(mvm))
  hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS |
           NL80211_FEATURE_DYNAMIC_SMPS;

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
  hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
  hw->wiphy->features |= NL80211_FEATURE_QUIET;

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
  hw->wiphy->features |=
   NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
  hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;

 if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_KEK_KCK_MATERIAL,
      IWL_FW_CMD_VER_UNKNOWN) >= 3)
  hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK;

 if (fw_has_api(&mvm->fw->ucode_capa,
         IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_SCAN_START_TIME);
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 }

 if (iwl_mvm_is_oce_supported(mvm)) {
  u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 0);

  wiphy_ext_feature_set(hw->wiphy,
   NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
  wiphy_ext_feature_set(hw->wiphy,
   NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
  wiphy_ext_feature_set(hw->wiphy,
   NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);

  /* Old firmware also supports probe deferral and suppression */
  if (scan_ver < 15)
   wiphy_ext_feature_set(hw->wiphy,
           NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
 }

 hw->wiphy->iftype_ext_capab = NULL;
 hw->wiphy->num_iftype_ext_capab = 0;

 if (mvm->nvm_data->sku_cap_11ax_enable &&
     !iwlwifi_mod_params.disable_11ax) {
  hw->wiphy->iftype_ext_capab = add_iftypes_ext_capa;
  hw->wiphy->num_iftype_ext_capab =
   ARRAY_SIZE(add_iftypes_ext_capa) - 1;

  ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
  ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
 }

 if (iwl_fw_lookup_cmd_ver(mvm->fw,
      WIDE_ID(DATA_PATH_GROUP,
       WNM_80211V_TIMING_MEASUREMENT_CONFIG_CMD),
      IWL_FW_CMD_VER_UNKNOWN) >= 1) {
  IWL_DEBUG_INFO(mvm->trans, "Timing measurement supported\n");

  if (!hw->wiphy->iftype_ext_capab) {
   hw->wiphy->num_iftype_ext_capab = 1;
   hw->wiphy->iftype_ext_capab = add_iftypes_ext_capa +
    ARRAY_SIZE(add_iftypes_ext_capa) - 1;
  } else {
   hw->wiphy->iftype_ext_capab = add_iftypes_ext_capa + 1;
  }
 }

 if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(LOCATION_GROUP,
         TOF_RANGE_REQ_CMD),
      IWL_FW_CMD_VER_UNKNOWN) >= 11) {
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE);

  if (fw_has_capa(&mvm->fw->ucode_capa,
    IWL_UCODE_TLV_CAPA_SECURE_LTF_SUPPORT))
   wiphy_ext_feature_set(hw->wiphy,
           NL80211_EXT_FEATURE_SECURE_LTF);
 }

 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;

#ifdef CONFIG_PM_SLEEP
 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
     device_can_wakeup(mvm->trans->dev) && !fips_enabled) {
  mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
         WIPHY_WOWLAN_DISCONNECT |
         WIPHY_WOWLAN_EAP_IDENTITY_REQ |
         WIPHY_WOWLAN_RFKILL_RELEASE |
         WIPHY_WOWLAN_NET_DETECT;
  mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
         WIPHY_WOWLAN_GTK_REKEY_FAILURE |
         WIPHY_WOWLAN_4WAY_HANDSHAKE;

  mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
  mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
  mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
  mvm->wowlan.max_nd_match_sets =
   iwl_umac_scan_get_max_profiles(mvm->fw);
  hw->wiphy->wowlan = &mvm->wowlan;
 }
#endif

 ret = iwl_mvm_leds_init(mvm);
 if (ret)
  return ret;

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
  IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
  hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
  ieee80211_hw_set(hw, TDLS_WIDER_BW);
 }

 if (fw_has_capa(&mvm->fw->ucode_capa,
   IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
  IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
  hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 }

 hw->netdev_features |= mvm->trans->mac_cfg->base->features;
 if (!iwl_mvm_is_csum_supported(mvm))
  hw->netdev_features &= ~IWL_CSUM_NETIF_FLAGS_MASK;

 if (mvm->cfg->vht_mu_mimo_supported)
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);

 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT))
  wiphy_ext_feature_set(hw->wiphy,
          NL80211_EXT_FEATURE_PROTECTED_TWT);

 iwl_mvm_vendor_cmds_register(mvm);

 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);

 ret = ieee80211_register_hw(mvm->hw);
 if (ret) {
  iwl_mvm_leds_exit(mvm);
 }

 return ret;
}

static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
      struct ieee80211_sta *sta)
{
 if (likely(sta)) {
  if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
   return;
 } else {
  if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
   return;
 }

 ieee80211_free_txskb(mvm->hw, skb);
}

void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
      struct ieee80211_tx_control *control, struct sk_buff *skb)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct ieee80211_sta *sta = control->sta;
 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 struct ieee80211_hdr *hdr = (void *)skb->data;
 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
  IEEE80211_TX_CTL_TX_OFFCHAN;
 u32 link_id = u32_get_bits(info->control.flags,
       IEEE80211_TX_CTRL_MLO_LINK);
 struct ieee80211_sta *tmp_sta = sta;

 if (iwl_mvm_is_radio_killed(mvm)) {
  IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
  goto drop;
 }

 if (offchannel &&
     !test_bit(IWL_MVM_STATUS_ROC_P2P_RUNNING, &mvm->status) &&
     !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
  goto drop;

 /*
 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs
 * so we treat the others as broadcast
 */
 if (ieee80211_is_mgmt(hdr->frame_control))
  sta = NULL;

 /* this shouldn't even happen: just drop */
 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
     !offchannel)
  goto drop;

 if (tmp_sta && !sta && link_id != IEEE80211_LINK_UNSPECIFIED &&
     !ieee80211_is_probe_resp(hdr->frame_control)) {
  /* translate MLD addresses to LINK addresses */
  struct ieee80211_link_sta *link_sta =
   rcu_dereference(tmp_sta->link[link_id]);
  struct ieee80211_bss_conf *link_conf =
   rcu_dereference(info->control.vif->link_conf[link_id]);
  struct ieee80211_mgmt *mgmt;

  if (WARN_ON(!link_sta || !link_conf))
   goto drop;

  /* if sta is NULL, the frame is a management frame */
  mgmt = (void *)hdr;
  memcpy(mgmt->da, link_sta->addr, ETH_ALEN);
  memcpy(mgmt->sa, link_conf->addr, ETH_ALEN);
  memcpy(mgmt->bssid, link_conf->bssid, ETH_ALEN);
 }

 iwl_mvm_tx_skb(mvm, skb, sta);
 return;
 drop:
 ieee80211_free_txskb(hw, skb);
}

void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
 struct sk_buff *skb = NULL;

 /*
 * No need for threads to be pending here, they can leave the first
 * taker all the work.
 *
 * mvmtxq->tx_request logic:
 *
 * If 0, no one is currently TXing, set to 1 to indicate current thread
 * will now start TX and other threads should quit.
 *
 * If 1, another thread is currently TXing, set to 2 to indicate to
 * that thread that there was another request. Since that request may
 * have raced with the check whether the queue is empty, the TXing
 * thread should check the queue's status one more time before leaving.
 * This check is done in order to not leave any TX hanging in the queue
 * until the next TX invocation (which may not even happen).
 *
 * If 2, another thread is currently TXing, and it will already double
 * check the queue, so do nothing.
 */
 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
  return;

 rcu_read_lock();
 do {
  while (likely(!test_bit(IWL_MVM_TXQ_STATE_STOP_FULL,
     &mvmtxq->state) &&
         !test_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT,
     &mvmtxq->state) &&
         !test_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA,
     &mvmtxq->state) &&
         !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) {
   skb = ieee80211_tx_dequeue(hw, txq);

   if (!skb) {
    if (txq->sta)
     IWL_DEBUG_TX(mvm,
           "TXQ of sta %pM tid %d is now empty\n",
           txq->sta->addr,
           txq->tid);
    break;
   }

   iwl_mvm_tx_skb(mvm, skb, txq->sta);
  }
 } while (atomic_dec_return(&mvmtxq->tx_request));
 rcu_read_unlock();
}

void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
          struct ieee80211_txq *txq)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);

 if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||
     !txq->sta) {
  iwl_mvm_mac_itxq_xmit(hw, txq);
  return;
 }

 /* iwl_mvm_mac_itxq_xmit() will later be called by the worker
 * to handle any packets we leave on the txq now
 */

 spin_lock_bh(&mvm->add_stream_lock);
 /* The list is being deleted only after the queue is fully allocated. */
 if (list_empty(&mvmtxq->list) &&
     /* recheck under lock */
     !test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) {
  list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
  schedule_work(&mvm->add_stream_wk);
 }
 spin_unlock_bh(&mvm->add_stream_lock);
}

#define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)  \
 do {        \
  if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))  \
   break;      \
  iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \
 } while (0)

static void
iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
       struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
       enum ieee80211_ampdu_mlme_action action)
{
 struct iwl_fw_dbg_trigger_tlv *trig;
 struct iwl_fw_dbg_trigger_ba *ba_trig;

 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
         FW_DBG_TRIGGER_BA);
 if (!trig)
  return;

 ba_trig = (void *)trig->data;

 switch (action) {
 case IEEE80211_AMPDU_TX_OPERATIONAL: {
  struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
  struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];

  CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
     "TX AGG START: MAC %pM tid %d ssn %d\n",
     sta->addr, tid, tid_data->ssn);
  break;
  }
 case IEEE80211_AMPDU_TX_STOP_CONT:
  CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
     "TX AGG STOP: MAC %pM tid %d\n",
     sta->addr, tid);
  break;
 case IEEE80211_AMPDU_RX_START:
  CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
     "RX AGG START: MAC %pM tid %d ssn %d\n",
     sta->addr, tid, rx_ba_ssn);
  break;
 case IEEE80211_AMPDU_RX_STOP:
  CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
     "RX AGG STOP: MAC %pM tid %d\n",
     sta->addr, tid);
  break;
 default:
  break;
 }
}

int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
        struct ieee80211_vif *vif,
        struct ieee80211_ampdu_params *params)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 int ret;
 struct ieee80211_sta *sta = params->sta;
 enum ieee80211_ampdu_mlme_action action = params->action;
 u16 tid = params->tid;
 u16 *ssn = ¶ms->ssn;
 u16 buf_size = params->buf_size;
 bool amsdu = params->amsdu;
 u16 timeout = params->timeout;

 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
       sta->addr, tid, action);

 if (!(mvm->nvm_data->sku_cap_11n_enable))
  return -EACCES;

 mutex_lock(&mvm->mutex);

 switch (action) {
 case IEEE80211_AMPDU_RX_START:
  if (iwl_mvm_vif_from_mac80211(vif)->deflink.ap_sta_id ==
      iwl_mvm_sta_from_mac80211(sta)->deflink.sta_id) {
   struct iwl_mvm_vif *mvmvif;
   u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
   struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];

   mdata->opened_rx_ba_sessions = true;
   mvmvif = iwl_mvm_vif_from_mac80211(vif);
   cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
  }
  if (!iwl_enable_rx_ampdu()) {
   ret = -EINVAL;
   break;
  }
  ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
      timeout);
  break;
 case IEEE80211_AMPDU_RX_STOP:
  ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
      timeout);
  break;
 case IEEE80211_AMPDU_TX_START:
  if (!iwl_enable_tx_ampdu()) {
   ret = -EINVAL;
   break;
  }
  ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
  break;
 case IEEE80211_AMPDU_TX_STOP_CONT:
  ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
  break;
 case IEEE80211_AMPDU_TX_STOP_FLUSH:
 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
  ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
  break;
 case IEEE80211_AMPDU_TX_OPERATIONAL:
  ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
           buf_size, amsdu);
  break;
 default:
  WARN_ON_ONCE(1);
  ret = -EINVAL;
  break;
 }

 if (!ret) {
  u16 rx_ba_ssn = 0;

  if (action == IEEE80211_AMPDU_RX_START)
   rx_ba_ssn = *ssn;

  iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
         rx_ba_ssn, action);
 }
 mutex_unlock(&mvm->mutex);

 return ret;
}

static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
         struct ieee80211_vif *vif)
{
 struct iwl_mvm *mvm = data;
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 struct iwl_probe_resp_data *probe_data;
 unsigned int link_id;

 mvmvif->uploaded = false;

 spin_lock_bh(&mvm->time_event_lock);
 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 spin_unlock_bh(&mvm->time_event_lock);

 mvmvif->roc_activity = ROC_NUM_ACTIVITIES;

 mvmvif->bf_enabled = false;
 mvmvif->ba_enabled = false;
 mvmvif->ap_sta = NULL;

 mvmvif->esr_active = false;
 vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE;

 for_each_mvm_vif_valid_link(mvmvif, link_id) {
  mvmvif->link[link_id]->ap_sta_id = IWL_INVALID_STA;
  mvmvif->link[link_id]->fw_link_id = IWL_MVM_FW_LINK_ID_INVALID;
  mvmvif->link[link_id]->phy_ctxt = NULL;
  mvmvif->link[link_id]->active = 0;
  mvmvif->link[link_id]->igtk = NULL;
  memset(&mvmvif->link[link_id]->bf_data, 0,
         sizeof(mvmvif->link[link_id]->bf_data));
 }

 probe_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
            lockdep_is_held(&mvm->mutex));
 if (probe_data)
  kfree_rcu(probe_data, rcu_head);
 RCU_INIT_POINTER(mvmvif->deflink.probe_resp_data, NULL);
}

static void iwl_mvm_cleanup_sta_iterator(void *data, struct ieee80211_sta *sta)
{
 struct iwl_mvm *mvm = data;
 struct iwl_mvm_sta *mvm_sta;
 struct ieee80211_vif *vif;
 int link_id;

 mvm_sta = iwl_mvm_sta_from_mac80211(sta);
 vif = mvm_sta->vif;

 if (!sta->valid_links)
  return;

 for (link_id = 0; link_id < ARRAY_SIZE((sta)->link); link_id++) {
  struct iwl_mvm_link_sta *mvm_link_sta;

  mvm_link_sta =
   rcu_dereference_check(mvm_sta->link[link_id],
           lockdep_is_held(&mvm->mutex));
  if (mvm_link_sta && !(vif->active_links & BIT(link_id))) {
   /*
 * We have a link STA but the link is inactive in
 * mac80211. This will happen if we failed to
 * deactivate the link but mac80211 roll back the
 * deactivation of the link.
 * Delete the stale data to avoid issues later on.
 */
   iwl_mvm_mld_free_sta_link(mvm, mvm_sta, mvm_link_sta,
        link_id);
  }
 }
}

static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
{
 iwl_mvm_stop_device(mvm);

 mvm->cur_aid = 0;

 mvm->scan_status = 0;
 mvm->ps_disabled = false;
 mvm->rfkill_safe_init_done = false;

 /* just in case one was running */
 iwl_mvm_cleanup_roc_te(mvm);
 ieee80211_remain_on_channel_expired(mvm->hw);

 iwl_mvm_ftm_restart(mvm);

 /*
 * cleanup all interfaces, even inactive ones, as some might have
 * gone down during the HW restart
 */
 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);

 /* cleanup stations as links may be gone after restart */
 ieee80211_iterate_stations_atomic(mvm->hw,
       iwl_mvm_cleanup_sta_iterator, mvm);

 mvm->p2p_device_vif = NULL;

 iwl_mvm_reset_phy_ctxts(mvm);
 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));

 ieee80211_wake_queues(mvm->hw);

 mvm->rx_ba_sessions = 0;
 mvm->fwrt.dump.conf = FW_DBG_INVALID;
 mvm->monitor_on = false;
#ifdef CONFIG_IWLWIFI_DEBUGFS
 mvm->beacon_inject_active = false;
#endif

 /* keep statistics ticking */
 iwl_mvm_accu_radio_stats(mvm);
}

int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
{
 bool fast_resume = false;
 int ret;

 lockdep_assert_held(&mvm->mutex);

 ret = iwl_mvm_mei_get_ownership(mvm);
 if (ret)
  return ret;

 if (mvm->mei_nvm_data) {
  /* We got the NIC, we can now free the MEI NVM data */
  kfree(mvm->mei_nvm_data);
  mvm->mei_nvm_data = NULL;

  /*
 * We can't free the nvm_data we allocated based on the SAP
 * data because we registered to cfg80211 with the channels
 * allocated on mvm->nvm_data. Keep a pointer in temp_nvm_data
 * just in order to be able free it later.
 * NULLify nvm_data so that we will read the NVM from the
 * firmware this time.
 */
  mvm->temp_nvm_data = mvm->nvm_data;
  mvm->nvm_data = NULL;
 }

#ifdef CONFIG_PM_SLEEP
 /* fast_resume will be cleared by iwl_mvm_fast_resume */
 fast_resume = mvm->fast_resume;

 if (fast_resume) {
  iwl_mvm_mei_device_state(mvm, true);
  ret = iwl_mvm_fast_resume(mvm);
  if (ret) {
   iwl_mvm_stop_device(mvm);
   /* iwl_mvm_up() will be called further down */
  } else {
   /*
 * We clear IWL_MVM_STATUS_FIRMWARE_RUNNING upon
 * mac_down() so that debugfs will stop honoring
 * requests after we flush all the workers.
 * Set the IWL_MVM_STATUS_FIRMWARE_RUNNING bit again
 * now that we are back. This is a bit abusing the
 * flag since the firmware wasn't really ever stopped,
 * but this still serves the purpose.
 */
   set_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
  }
 }
#endif /* CONFIG_PM_SLEEP */

 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
  /*
 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
 * so later code will - from now on - see that we're doing it.
 */
  set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
  clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
  /* Clean up some internal and mac80211 state on restart */
  iwl_mvm_restart_cleanup(mvm);
 }

 /* we also want to load the firmware if fast_resume failed */
 if (!fast_resume || ret)
  ret = iwl_mvm_up(mvm);

 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
          NULL);
 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
          NULL);

 mvm->last_reset_or_resume_time_jiffies = jiffies;

 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
  /* Something went wrong - we need to finish some cleanup
 * that normally iwl_mvm_mac_restart_complete() below
 * would do.
 */
  clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 }

 return ret;
}

int iwl_mvm_mac_start(struct ieee80211_hw *hw)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 int ret;
 int retry, max_retry = 0;

 mutex_lock(&mvm->mutex);

 /* we are starting the mac not in error flow, and restart is enabled */
 if (!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) &&
     iwlwifi_mod_params.fw_restart)
  max_retry = IWL_MAX_INIT_RETRY;

 for (retry = 0; retry <= max_retry; retry++) {
  ret = __iwl_mvm_mac_start(mvm);
  if (ret != -ETIMEDOUT)
   break;

  IWL_ERR(mvm, "mac start retry %d\n", retry);
 }

 mutex_unlock(&mvm->mutex);

 iwl_mvm_mei_set_sw_rfkill_state(mvm);

 return ret;
}

static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
{
 int ret;

 guard(mvm)(mvm);

 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);

 ret = iwl_mvm_update_quotas(mvm, true, NULL);
 if (ret)
  IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
   ret);

 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);

 /*
 * If we have TDLS peers, remove them. We don't know the last seqno/PN
 * of packets the FW sent out, so we must reconnect.
 */
 iwl_mvm_teardown_tdls_peers(mvm);

 IWL_INFO(mvm, "restart completed\n");
 iwl_trans_finish_sw_reset(mvm->trans);

 /* no need to lock, adding in parallel would schedule too */
 if (!list_empty(&mvm->add_stream_txqs))
  schedule_work(&mvm->add_stream_wk);
}

void iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
       enum ieee80211_reconfig_type reconfig_type)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

 switch (reconfig_type) {
 case IEEE80211_RECONFIG_TYPE_RESTART:
  iwl_mvm_restart_complete(mvm);
  break;
 case IEEE80211_RECONFIG_TYPE_SUSPEND:
  break;
 }
}

void __iwl_mvm_mac_stop(struct iwl_mvm *mvm, bool suspend)
{
 lockdep_assert_held(&mvm->mutex);

 iwl_mvm_ftm_initiator_smooth_stop(mvm);

 /* firmware counters are obviously reset now, but we shouldn't
 * partially track so also clear the fw_reset_accu counters.
 */
 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));

 /* async_handlers_wk is now blocked */

 if (!iwl_mvm_has_new_station_api(mvm->fw))
  iwl_mvm_rm_aux_sta(mvm);

 if (suspend &&
     mvm->trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
  iwl_mvm_fast_suspend(mvm);
  /* From this point on, we won't touch the device */
  iwl_mvm_mei_device_state(mvm, false);
 } else {
  iwl_mvm_stop_device(mvm);
 }

 iwl_mvm_async_handlers_purge(mvm);
 /* async_handlers_list is empty and will stay empty: HW is stopped */

 /*
 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
 * hw (as restart_complete() won't be called in this case) and mac80211
 * won't execute the restart.
 * But make sure to cleanup interfaces that have gone down before/during
 * HW restart was requested.
 */
 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
     test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
          &mvm->status))
  ieee80211_iterate_interfaces(mvm->hw, 0,
          iwl_mvm_cleanup_iterator, mvm);

 /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
 * make sure there's nothing left there and warn if any is found.
 */
 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
  int i;

  for (i = 0; i < mvm->max_scans; i++) {
   if (WARN_ONCE(mvm->scan_uid_status[i],
          "UMAC scan UID %d status was not cleaned\n",
          i))
    mvm->scan_uid_status[i] = 0;
  }
 }
}

void iwl_mvm_mac_stop(struct ieee80211_hw *hw, bool suspend)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

 /* Stop internal MLO scan, if running */
 mutex_lock(&mvm->mutex);
 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_INT_MLO, false);
 mutex_unlock(&mvm->mutex);

 wiphy_work_cancel(mvm->hw->wiphy, &mvm->trig_link_selection_wk);
 wiphy_work_flush(mvm->hw->wiphy, &mvm->async_handlers_wiphy_wk);
 flush_work(&mvm->async_handlers_wk);
 flush_work(&mvm->add_stream_wk);

 /*
 * Lock and clear the firmware running bit here already, so that
 * new commands coming in elsewhere, e.g. from debugfs, will not
 * be able to proceed. This is important here because one of those
 * debugfs files causes the firmware dump to be triggered, and if we
 * don't stop debugfs accesses before canceling that it could be
 * retriggered after we flush it but before we've cleared the bit.
 */
 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);

 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
 cancel_delayed_work_sync(&mvm->scan_timeout_dwork);

 /*
 * The work item could be running or queued if the
 * ROC time event stops just as we get here.
 */
 flush_work(&mvm->roc_done_wk);

 iwl_mvm_mei_set_sw_rfkill_state(mvm);

 mutex_lock(&mvm->mutex);
 __iwl_mvm_mac_stop(mvm, suspend);
 mutex_unlock(&mvm->mutex);

 /*
 * The worker might have been waiting for the mutex, let it run and
 * discover that its list is now empty.
 */
 cancel_work_sync(&mvm->async_handlers_wk);
 wiphy_work_cancel(hw->wiphy, &mvm->async_handlers_wiphy_wk);
}

struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
{
 u16 i;

 lockdep_assert_held(&mvm->mutex);

 for (i = 0; i < NUM_PHY_CTX; i++)
  if (!mvm->phy_ctxts[i].ref)
   return &mvm->phy_ctxts[i];

 IWL_ERR(mvm, "No available PHY context\n");
 return NULL;
}

int iwl_mvm_set_tx_power(struct iwl_mvm *mvm,
    struct ieee80211_bss_conf *link_conf,
    s16 tx_power)
{
 u32 cmd_id = REDUCE_TX_POWER_CMD;
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(link_conf->vif);
 u32 mac_id = mvmvif->id;
 int len;
 struct iwl_dev_tx_power_cmd_v3_v8 cmd = {
  .common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_LINK),
  .common.link_id = cpu_to_le32(mac_id),
 };
 struct iwl_dev_tx_power_cmd cmd_v9_v10;
 u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 3);
 u16 u_tx_power = tx_power == IWL_DEFAULT_MAX_TX_POWER ?
  IWL_DEV_MAX_TX_POWER : 8 * tx_power;
 void *cmd_data = &cmd;

 cmd.common.pwr_restriction = cpu_to_le16(u_tx_power);

 if (cmd_ver > 8) {
  u32 link_id;

  if (WARN_ON(!mvmvif->link[link_conf->link_id]))
   return -ENODEV;

  link_id = mvmvif->link[link_conf->link_id]->fw_link_id;

  /* Those fields sit on the same place for v9 and v10 */
  cmd_v9_v10.common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_LINK);
  cmd_v9_v10.common.link_id = cpu_to_le32(link_id);
  cmd_v9_v10.common.pwr_restriction = cpu_to_le16(u_tx_power);
  cmd_data = &cmd_v9_v10;
 }

 if (cmd_ver == 10)
  len = sizeof(cmd_v9_v10.v10);
 else if (cmd_ver == 9)
  len = sizeof(cmd_v9_v10.v9);
 else if (cmd_ver == 8)
  len = sizeof(cmd.v8);
 else if (fw_has_api(&mvm->fw->ucode_capa,
       IWL_UCODE_TLV_API_REDUCE_TX_POWER))
  len = sizeof(cmd.v5);
 else if (fw_has_capa(&mvm->fw->ucode_capa,
        IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
  len = sizeof(cmd.v4);
 else
  len = sizeof(cmd.v3);

 /* all structs have the same common part, add its length */
 len += sizeof(cmd.common);

 if (cmd_ver < 9)
  len += sizeof(cmd.per_band);

 return iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, len, cmd_data);

}

static void iwl_mvm_post_csa_tx(void *data, struct ieee80211_sta *sta)
{
 struct ieee80211_hw *hw = data;
 int i;

 for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {
  struct iwl_mvm_txq *mvmtxq =
   iwl_mvm_txq_from_mac80211(sta->txq[i]);

  clear_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state);
  iwl_mvm_mac_itxq_xmit(hw, sta->txq[i]);
 }
}

int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
    struct ieee80211_vif *vif,
    struct ieee80211_bss_conf *link_conf)
{
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 int ret;

 mutex_lock(&mvm->mutex);

 if (vif->type == NL80211_IFTYPE_STATION) {
  struct iwl_mvm_sta *mvmsta;
  unsigned int link_id = link_conf->link_id;
  u8 ap_sta_id = mvmvif->link[link_id]->ap_sta_id;

  mvmvif->csa_bcn_pending = false;
  mvmvif->csa_blocks_tx = false;
  mvmsta = iwl_mvm_sta_from_staid_protected(mvm, ap_sta_id);

  if (WARN_ON(!mvmsta)) {
   ret = -EIO;
   goto out_unlock;
  }

  iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
  if (mvm->mld_api_is_used)
   iwl_mvm_mld_mac_ctxt_changed(mvm, vif, false);
  else
   iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);

  if (!fw_has_capa(&mvm->fw->ucode_capa,
     IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
   ret = iwl_mvm_enable_beacon_filter(mvm, vif);
   if (ret)
    goto out_unlock;

   iwl_mvm_stop_session_protection(mvm, vif);
  }
 } else if (vif->type == NL80211_IFTYPE_AP && mvmvif->csa_blocks_tx) {
  struct iwl_mvm_txq *mvmtxq =
   iwl_mvm_txq_from_mac80211(vif->txq);

  clear_bit(IWL_MVM_TXQ_STATE_STOP_AP_CSA, &mvmtxq->state);

  local_bh_disable();
  iwl_mvm_mac_itxq_xmit(hw, vif->txq);
  ieee80211_iterate_stations_atomic(hw, iwl_mvm_post_csa_tx, hw);
  local_bh_enable();

  mvmvif->csa_blocks_tx = false;
 }

 mvmvif->ps_disabled = false;

 ret = iwl_mvm_power_update_ps(mvm);

out_unlock:
 if (mvmvif->csa_failed)
  ret = -EIO;
 mutex_unlock(&mvm->mutex);

 return ret;
}

void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
      struct ieee80211_vif *vif,
      struct ieee80211_bss_conf *link_conf)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 struct iwl_chan_switch_te_cmd cmd = {
  .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
         mvmvif->color)),
  .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
 };

 /*
 * In the new flow since FW is in charge of the timing,
 * if driver has canceled the channel switch he will receive the
 * CHANNEL_SWITCH_START_NOTIF notification from FW and then cancel it
 */
 if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
        CHANNEL_SWITCH_ERROR_NOTIF, 0))
  return;

 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);

 mutex_lock(&mvm->mutex);
 if (!fw_has_capa(&mvm->fw->ucode_capa,
    IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
  iwl_mvm_remove_csa_period(mvm, vif);
 else
  WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
          WIDE_ID(MAC_CONF_GROUP,
           CHANNEL_SWITCH_TIME_EVENT_CMD),
          0, sizeof(cmd), &cmd));
 mvmvif->csa_failed = true;
 mutex_unlock(&mvm->mutex);

 /* If we're here, we can't support MLD */
 iwl_mvm_post_channel_switch(hw, vif, &vif->bss_conf);
}

void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
{
 struct iwl_mvm_vif *mvmvif;
 struct ieee80211_vif *vif;

 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);

 /* Trigger disconnect (should clear the CSA state) */
 ieee80211_chswitch_done(vif, false, 0);
}

static u8
iwl_mvm_chandef_get_primary_80(struct cfg80211_chan_def *chandef)
{
 int data_start;
 int control_start;
 int bw;

 if (chandef->width == NL80211_CHAN_WIDTH_320)
  bw = 320;
 else if (chandef->width == NL80211_CHAN_WIDTH_160)
  bw = 160;
 else
  return 0;

 /* data is bw wide so the start is half the width */
 data_start = chandef->center_freq1 - bw / 2;
 /* control is 20Mhz width */
 control_start = chandef->chan->center_freq - 10;

 return (control_start - data_start) / 80;
}

static int iwl_mvm_alloc_bcast_mcast_sta(struct iwl_mvm *mvm,
      struct ieee80211_vif *vif)
{
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 int ret;

 lockdep_assert_held(&mvm->mutex);

 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
 if (ret) {
  IWL_ERR(mvm, "Failed to allocate bcast sta\n");
  return ret;
 }

 /* Only queue for this station is the mcast queue,
 * which shouldn't be in TFD mask anyway
 */
 return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.mcast_sta, 0,
     vif->type,
     IWL_STA_MULTICAST);
}

static void iwl_mvm_prevent_esr_done_wk(struct wiphy *wiphy,
     struct wiphy_work *wk)
{
 struct iwl_mvm_vif *mvmvif =
  container_of(wk, struct iwl_mvm_vif, prevent_esr_done_wk.work);
 struct iwl_mvm *mvm = mvmvif->mvm;
 struct ieee80211_vif *vif =
  container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);

 guard(mvm)(mvm);
 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_PREVENTION);
}

static void iwl_mvm_mlo_int_scan_wk(struct wiphy *wiphy, struct wiphy_work *wk)
{
 struct iwl_mvm_vif *mvmvif = container_of(wk, struct iwl_mvm_vif,
        mlo_int_scan_wk.work);
 struct ieee80211_vif *vif =
  container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);

 guard(mvm)(mvmvif->mvm);
 iwl_mvm_int_mlo_scan(mvmvif->mvm, vif);
}

static void iwl_mvm_unblock_esr_tpt(struct wiphy *wiphy, struct wiphy_work *wk)
{
 struct iwl_mvm_vif *mvmvif =
  container_of(wk, struct iwl_mvm_vif, unblock_esr_tpt_wk);
 struct iwl_mvm *mvm = mvmvif->mvm;
 struct ieee80211_vif *vif =
  container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);

 guard(mvm)(mvm);
 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_TPT);
}

static void iwl_mvm_unblock_esr_tmp_non_bss(struct wiphy *wiphy,
         struct wiphy_work *wk)
{
 struct iwl_mvm_vif *mvmvif =
  container_of(wk, struct iwl_mvm_vif,
        unblock_esr_tmp_non_bss_wk.work);
 struct iwl_mvm *mvm = mvmvif->mvm;
 struct ieee80211_vif *vif =
  container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);

 mutex_lock(&mvm->mutex);
 iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_TMP_NON_BSS);
 mutex_unlock(&mvm->mutex);
}

void iwl_mvm_mac_init_mvmvif(struct iwl_mvm *mvm, struct iwl_mvm_vif *mvmvif)
{
 lockdep_assert_held(&mvm->mutex);

 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
  return;

 mvmvif->deflink.average_beacon_energy = 0;

 INIT_DELAYED_WORK(&mvmvif->csa_work,
     iwl_mvm_channel_switch_disconnect_wk);

 wiphy_delayed_work_init(&mvmvif->prevent_esr_done_wk,
    iwl_mvm_prevent_esr_done_wk);

 wiphy_delayed_work_init(&mvmvif->mlo_int_scan_wk,
    iwl_mvm_mlo_int_scan_wk);

 wiphy_work_init(&mvmvif->unblock_esr_tpt_wk,
   iwl_mvm_unblock_esr_tpt);

 wiphy_delayed_work_init(&mvmvif->unblock_esr_tmp_non_bss_wk,
    iwl_mvm_unblock_esr_tmp_non_bss);
}

static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
         struct ieee80211_vif *vif)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 int ret;
 int i;

 mutex_lock(&mvm->mutex);

 iwl_mvm_mac_init_mvmvif(mvm, mvmvif);

 mvmvif->mvm = mvm;

 /* the first link always points to the default one */
 mvmvif->deflink.fw_link_id = IWL_MVM_FW_LINK_ID_INVALID;
 mvmvif->deflink.active = 0;
 mvmvif->link[0] = &mvmvif->deflink;

 vif->driver_flags = IEEE80211_VIF_REMOVE_AP_AFTER_DISASSOC;

 iwl_mvm_set_link_fw_id(mvm, vif, &vif->bss_conf);

 /*
 * Not much to do here. The stack will not allow interface
 * types or combinations that we didn't advertise, so we
 * don't really have to check the types.
 */

 /* make sure that beacon statistics don't go backwards with FW reset */
 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
  for_each_mvm_vif_valid_link(mvmvif, i)
   mvmvif->link[i]->beacon_stats.accu_num_beacons +=
    mvmvif->link[i]->beacon_stats.num_beacons;

 /* Allocate resources for the MAC context, and add it to the fw  */
 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 if (ret)
  goto out;

 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);

 /*
 * The AP binding flow can be done only after the beacon
 * template is configured (which happens only in the mac80211
 * start_ap() flow), and adding the broadcast station can happen
 * only after the binding.
 * In addition, since modifying the MAC before adding a bcast
 * station is not allowed by the FW, delay the adding of MAC context to
 * the point where we can also add the bcast station.
 * In short: there's not much we can do at this point, other than
 * allocating resources :)
 */
 if (vif->type == NL80211_IFTYPE_AP ||
     vif->type == NL80211_IFTYPE_ADHOC) {
  if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
   iwl_mvm_vif_dbgfs_add_link(mvm, vif);
  ret = 0;
  goto out;
 }

 mvmvif->features |= hw->netdev_features;

 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 if (ret)
  goto out_unlock;

 ret = iwl_mvm_power_update_mac(mvm);
 if (ret)
  goto out_remove_mac;

 /* beacon filtering */
 ret = iwl_mvm_disable_beacon_filter(mvm, vif);
 if (ret)
  goto out_remove_mac;

 if (!mvm->bf_allowed_vif &&
     vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
  mvm->bf_allowed_vif = mvmvif;
  vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
         IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 }

 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
  mvm->p2p_device_vif = vif;

 iwl_mvm_tcm_add_vif(mvm, vif);

 if (vif->type == NL80211_IFTYPE_MONITOR) {
  mvm->monitor_on = true;
  mvm->monitor_p80 =
   iwl_mvm_chandef_get_primary_80(&vif->bss_conf.chanreq.oper);
 }

 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
  iwl_mvm_vif_dbgfs_add_link(mvm, vif);

 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
     vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
     !mvm->csme_vif && mvm->mei_registered) {
  iwl_mei_set_nic_info(vif->addr, mvm->nvm_data->hw_addr);
  iwl_mei_set_netdev(ieee80211_vif_to_wdev(vif)->netdev);
  mvm->csme_vif = vif;
 }

out:
 if (!ret && (vif->type == NL80211_IFTYPE_AP ||
       vif->type == NL80211_IFTYPE_ADHOC))
  ret = iwl_mvm_alloc_bcast_mcast_sta(mvm, vif);

 goto out_unlock;

 out_remove_mac:
 mvmvif->deflink.phy_ctxt = NULL;
 iwl_mvm_mac_ctxt_remove(mvm, vif);
 out_unlock:
 mutex_unlock(&mvm->mutex);

 return ret;
}

void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
     struct ieee80211_vif *vif)
{
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);

 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
  /*
 * Flush the ROC worker which will flush the OFFCHANNEL queue.
 * We assume here that all the packets sent to the OFFCHANNEL
 * queue are sent in ROC session.
 */
  flush_work(&mvm->roc_done_wk);
 }

 wiphy_delayed_work_cancel(mvm->hw->wiphy,
      &mvmvif->prevent_esr_done_wk);

 wiphy_delayed_work_cancel(mvm->hw->wiphy,
      &mvmvif->mlo_int_scan_wk);

 wiphy_work_cancel(mvm->hw->wiphy, &mvmvif->unblock_esr_tpt_wk);
 wiphy_delayed_work_cancel(mvm->hw->wiphy,
      &mvmvif->unblock_esr_tmp_non_bss_wk);

 cancel_delayed_work_sync(&mvmvif->csa_work);
}

static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
      struct ieee80211_vif *vif)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 struct iwl_probe_resp_data *probe_data;

 iwl_mvm_prepare_mac_removal(mvm, vif);

 if (!(vif->type == NL80211_IFTYPE_AP ||
       vif->type == NL80211_IFTYPE_ADHOC))
  iwl_mvm_tcm_rm_vif(mvm, vif);

 mutex_lock(&mvm->mutex);

 if (vif == mvm->csme_vif) {
  iwl_mei_set_netdev(NULL);
  mvm->csme_vif = NULL;
 }

 probe_data = rcu_dereference_protected(mvmvif->deflink.probe_resp_data,
            lockdep_is_held(&mvm->mutex));
 RCU_INIT_POINTER(mvmvif->deflink.probe_resp_data, NULL);
 if (probe_data)
  kfree_rcu(probe_data, rcu_head);

 if (mvm->bf_allowed_vif == mvmvif) {
  mvm->bf_allowed_vif = NULL;
  vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
           IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 }

 if (vif->bss_conf.ftm_responder)
  memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));

 iwl_mvm_vif_dbgfs_rm_link(mvm, vif);

 /*
 * For AP/GO interface, the tear down of the resources allocated to the
 * interface is be handled as part of the stop_ap flow.
 */
 if (vif->type == NL80211_IFTYPE_AP ||
     vif->type == NL80211_IFTYPE_ADHOC)
  goto out;

 iwl_mvm_power_update_mac(mvm);

 /* Before the interface removal, mac80211 would cancel the ROC, and the
 * ROC worker would be scheduled if needed. The worker would be flushed
 * in iwl_mvm_prepare_mac_removal() and thus at this point there is no
 * binding etc. so nothing needs to be done here.
 */
 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
  if (mvmvif->deflink.phy_ctxt) {
   iwl_mvm_phy_ctxt_unref(mvm, mvmvif->deflink.phy_ctxt);
   mvmvif->deflink.phy_ctxt = NULL;
  }
  mvm->p2p_device_vif = NULL;
 }

 iwl_mvm_mac_ctxt_remove(mvm, vif);

 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);

 if (vif->type == NL80211_IFTYPE_MONITOR)
  mvm->monitor_on = false;

out:
 if (vif->type == NL80211_IFTYPE_AP ||
     vif->type == NL80211_IFTYPE_ADHOC) {
  iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.mcast_sta);
  iwl_mvm_dealloc_bcast_sta(mvm, vif);
 }

 mutex_unlock(&mvm->mutex);
}

struct iwl_mvm_mc_iter_data {
 struct iwl_mvm *mvm;
 int port_id;
};

static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
          struct ieee80211_vif *vif)
{
 struct iwl_mvm_mc_iter_data *data = _data;
 struct iwl_mvm *mvm = data->mvm;
 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
 struct iwl_host_cmd hcmd = {
  .id = MCAST_FILTER_CMD,
  .flags = CMD_ASYNC,
  .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 };
 int ret, len;

 /* if we don't have free ports, mcast frames will be dropped */
 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
  return;

 if (vif->type != NL80211_IFTYPE_STATION ||
     !vif->cfg.assoc)
  return;

 cmd->port_id = data->port_id++;
 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);

 hcmd.len[0] = len;
 hcmd.data[0] = cmd;

 ret = iwl_mvm_send_cmd(mvm, &hcmd);
 if (ret)
  IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
}

static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
{
 struct iwl_mvm_mc_iter_data iter_data = {
  .mvm = mvm,
 };
 int ret;

 lockdep_assert_held(&mvm->mutex);

 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
  return;

 ieee80211_iterate_active_interfaces_atomic(
  mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
  iwl_mvm_mc_iface_iterator, &iter_data);

 /*
 * Send a (synchronous) ech command so that we wait for the
 * multiple asynchronous MCAST_FILTER_CMD commands sent by
 * the interface iterator. Otherwise, we might get here over
 * and over again (by userspace just sending a lot of these)
 * and the CPU can send them faster than the firmware can
 * process them.
 * Note that the CPU is still faster - but with this we'll
 * actually send fewer commands overall because the CPU will
 * not schedule the work in mac80211 as frequently if it's
 * still running when rescheduled (possibly multiple times).
 */
 ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
 if (ret)
  IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
}

u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
         struct netdev_hw_addr_list *mc_list)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mcast_filter_cmd *cmd;
 struct netdev_hw_addr *addr;
 int addr_count;
 bool pass_all;
 int len;

 addr_count = netdev_hw_addr_list_count(mc_list);
 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
     IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
 if (pass_all)
  addr_count = 0;

 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
 cmd = kzalloc(len, GFP_ATOMIC);
 if (!cmd)
  return 0;

 if (pass_all) {
  cmd->pass_all = 1;
  return (u64)(unsigned long)cmd;
 }

 netdev_hw_addr_list_for_each(addr, mc_list) {
  IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
       cmd->count, addr->addr);
  memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
         addr->addr, ETH_ALEN);
  cmd->count++;
 }

 return (u64)(unsigned long)cmd;
}

void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
         unsigned int changed_flags,
         unsigned int *total_flags, u64 multicast)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;

 guard(mvm)(mvm);

 /* replace previous configuration */
 kfree(mvm->mcast_filter_cmd);
 mvm->mcast_filter_cmd = cmd;

 if (!cmd)
  goto out;

 if (changed_flags & FIF_ALLMULTI)
  cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);

 if (cmd->pass_all)
  cmd->count = 0;

 iwl_mvm_recalc_multicast(mvm);
out:
 *total_flags = 0;
}

static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
     struct ieee80211_vif *vif,
     unsigned int filter_flags,
     unsigned int changed_flags)
{
 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);

 /* We support only filter for probe requests */
 if (!(changed_flags & FIF_PROBE_REQ))
  return;

 /* Supported only for p2p client interfaces */
 if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc ||
     !vif->p2p)
  return;

 guard(mvm)(mvm);
 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
}

int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
 struct iwl_mu_group_mgmt_cmd cmd = {};

 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
        WLAN_MEMBERSHIP_LEN);
 memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
        WLAN_USER_POSITION_LEN);

 return iwl_mvm_send_cmd_pdu(mvm,
        WIDE_ID(DATA_PATH_GROUP,
         UPDATE_MU_GROUPS_CMD),
        0, sizeof(cmd), &cmd);
}

static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
        struct ieee80211_vif *vif)
{
 if (vif->bss_conf.mu_mimo_owner) {
  struct iwl_mu_group_mgmt_notif *notif = _data;

  /*
 * MU-MIMO Group Id action frame is little endian. We treat
 * the data received from firmware as if it came from the
 * action frame, so no conversion is needed.
 */
  ieee80211_update_mu_groups(vif, 0,
        (u8 *)¬if->membership_status,
        (u8 *)¬if->user_position);
 }
}

void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
          struct iwl_rx_cmd_buffer *rxb)
{
 struct iwl_rx_packet *pkt = rxb_addr(rxb);
 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;

 ieee80211_iterate_active_interfaces_atomic(
   mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
   iwl_mvm_mu_mimo_iface_iterator, notif);
}

static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
{
 u8 byte_num = ppe_pos_bit / 8;
 u8 bit_num = ppe_pos_bit % 8;
 u8 residue_bits;
 u8 res;

 if (bit_num <= 5)
  return (ppe[byte_num] >> bit_num) &
         (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);

 /*
--> --------------------

--> maximum size reached

--> --------------------