// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* Copyright ( C ) 2024 - 2025 Intel Corporation
*/
#include <net/cfg80211.h>
#include "iface.h"
#include "hcmd.h"
#include "key.h"
#include "mlo.h"
#include "mac80211.h"
#include "fw/api/context.h"
#include "fw/api/mac.h"
#include "fw/api/time-event.h"
#include "fw/api/datapath.h"
/* Cleanup function for struct iwl_mld_vif, will be called in restart */
void iwl_mld_cleanup_vif(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mld *mld = mld_vif->mld;
struct iwl_mld_link *link;
mld_vif->emlsr.blocked_reasons &= ~IWL_MLD_EMLSR_BLOCKED_ROC;
if (mld_vif->aux_sta.sta_id != IWL_INVALID_STA)
iwl_mld_free_internal_sta(mld, &mld_vif->aux_sta);
/* EMLSR is turned back on during recovery */
vif->driver_flags &= ~IEEE80211_VIF_EML_ACTIVE;
if (mld_vif->roc_activity != ROC_NUM_ACTIVITIES)
ieee80211_remain_on_channel_expired(mld->hw);
mld_vif->roc_activity = ROC_NUM_ACTIVITIES;
for_each_mld_vif_valid_link(mld_vif, link) {
iwl_mld_cleanup_link(mld_vif->mld, link);
/* Correctly allocated primary link in non-MLO mode */
if (!ieee80211_vif_is_mld(vif) &&
link_id == 0 && link == &mld_vif->deflink)
continue ;
if (vif->active_links & BIT(link_id))
continue ;
/* Should not happen as link removal should always succeed */
WARN_ON(1 );
if (link != &mld_vif->deflink)
kfree_rcu(link, rcu_head);
RCU_INIT_POINTER(mld_vif->link[link_id], NULL);
}
ieee80211_iter_keys(mld->hw, vif, iwl_mld_cleanup_keys_iter, NULL);
wiphy_delayed_work_cancel(mld->wiphy, &mld_vif->mlo_scan_start_wk);
CLEANUP_STRUCT(mld_vif);
}
static int iwl_mld_send_mac_cmd(struct iwl_mld *mld,
struct iwl_mac_config_cmd *cmd)
{
int ret;
lockdep_assert_wiphy(mld->wiphy);
ret = iwl_mld_send_cmd_pdu(mld,
WIDE_ID(MAC_CONF_GROUP, MAC_CONFIG_CMD),
cmd);
if (ret)
IWL_ERR(mld, "Failed to send MAC_CONFIG_CMD ret = %d\n" , ret);
return ret;
}
int iwl_mld_mac80211_iftype_to_fw(const struct ieee80211_vif *vif)
{
switch (vif->type) {
case NL80211_IFTYPE_STATION:
return vif->p2p ? FW_MAC_TYPE_P2P_STA : FW_MAC_TYPE_BSS_STA;
case NL80211_IFTYPE_AP:
return FW_MAC_TYPE_GO;
case NL80211_IFTYPE_MONITOR:
return FW_MAC_TYPE_LISTENER;
case NL80211_IFTYPE_P2P_DEVICE:
return FW_MAC_TYPE_P2P_DEVICE;
case NL80211_IFTYPE_ADHOC:
return FW_MAC_TYPE_IBSS;
default :
WARN_ON_ONCE(1 );
}
return FW_MAC_TYPE_BSS_STA;
}
static bool iwl_mld_is_nic_ack_enabled(struct iwl_mld *mld,
struct ieee80211_vif *vif)
{
const struct ieee80211_supported_band *sband;
const struct ieee80211_sta_he_cap *own_he_cap;
lockdep_assert_wiphy(mld->wiphy);
/* This capability is the same for all bands,
* so take it from one of them .
*/
sband = mld->hw->wiphy->bands[NL80211_BAND_2GHZ];
own_he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);
return own_he_cap && (own_he_cap->he_cap_elem.mac_cap_info[2 ] &
IEEE80211_HE_MAC_CAP2_ACK_EN);
}
static void iwl_mld_set_he_support(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mac_config_cmd *cmd,
int cmd_ver)
{
if (vif->type == NL80211_IFTYPE_AP) {
if (cmd_ver == 2 )
cmd->wifi_gen_v2.he_ap_support = cpu_to_le16(1 );
else
cmd->wifi_gen.he_ap_support = 1 ;
} else {
if (cmd_ver == 2 )
cmd->wifi_gen_v2.he_support = cpu_to_le16(1 );
else
cmd->wifi_gen.he_support = 1 ;
}
}
/* fill the common part for all interface types */
static void iwl_mld_mac_cmd_fill_common(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mac_config_cmd *cmd,
u32 action)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct ieee80211_bss_conf *link_conf;
unsigned int link_id;
int cmd_ver = iwl_fw_lookup_cmd_ver(mld->fw,
WIDE_ID(MAC_CONF_GROUP,
MAC_CONFIG_CMD), 0 );
lockdep_assert_wiphy(mld->wiphy);
cmd->id_and_color = cpu_to_le32(mld_vif->fw_id);
cmd->action = cpu_to_le32(action);
cmd->mac_type =
cpu_to_le32(iwl_mld_mac80211_iftype_to_fw(vif));
memcpy(cmd->local_mld_addr, vif->addr, ETH_ALEN);
if (iwlwifi_mod_params.disable_11ax)
return ;
cmd->nic_not_ack_enabled =
cpu_to_le32(!iwl_mld_is_nic_ack_enabled(mld, vif));
/* If we have MLO enabled, then the firmware needs to enable
* address translation for the station ( s ) we add . That depends
* on having EHT enabled in firmware , which in turn depends on
* mac80211 in the code below .
* However , mac80211 doesn ' t enable HE / EHT until it has parsed
* the association response successfully , so just skip all that
* and enable both when we have MLO .
*/
if (ieee80211_vif_is_mld(vif)) {
iwl_mld_set_he_support(mld, vif, cmd, cmd_ver);
if (cmd_ver == 2 )
cmd->wifi_gen_v2.eht_support = cpu_to_le32(1 );
else
cmd->wifi_gen.eht_support = 1 ;
return ;
}
for_each_vif_active_link(vif, link_conf, link_id) {
if (!link_conf->he_support)
continue ;
iwl_mld_set_he_support(mld, vif, cmd, cmd_ver);
/* EHT, if supported, was already set above */
break ;
}
}
static void iwl_mld_fill_mac_cmd_sta(struct iwl_mld *mld,
struct ieee80211_vif *vif, u32 action,
struct iwl_mac_config_cmd *cmd)
{
struct ieee80211_bss_conf *link;
u32 twt_policy = 0 ;
int link_id;
lockdep_assert_wiphy(mld->wiphy);
WARN_ON(vif->type != NL80211_IFTYPE_STATION);
/* We always want to hear MCAST frames, if we're not authorized yet,
* we ' ll drop them .
*/
cmd->filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_GRP);
/* Adding a MAC ctxt with is_assoc set is not allowed in fw
* ( and shouldn ' t happen )
*/
if (vif->cfg.assoc && action != FW_CTXT_ACTION_ADD) {
cmd->client.is_assoc = 1 ;
if (!iwl_mld_vif_from_mac80211(vif)->authorized)
cmd->client.data_policy |=
cpu_to_le16(COEX_HIGH_PRIORITY_ENABLE);
} else {
/* Allow beacons to pass through as long as we are not
* associated
*/
cmd->filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_BEACON);
}
cmd->client.assoc_id = cpu_to_le16(vif->cfg.aid);
if (ieee80211_vif_is_mld(vif)) {
u16 esr_transition_timeout =
u16_get_bits(vif->cfg.eml_cap,
IEEE80211_EML_CAP_TRANSITION_TIMEOUT);
cmd->client.esr_transition_timeout =
min_t(u16, IEEE80211_EML_CAP_TRANSITION_TIMEOUT_128TU,
esr_transition_timeout);
cmd->client.medium_sync_delay =
cpu_to_le16(vif->cfg.eml_med_sync_delay);
}
for_each_vif_active_link(vif, link, link_id) {
if (!link->he_support)
continue ;
if (link->twt_requester)
twt_policy |= TWT_SUPPORTED;
if (link->twt_protected)
twt_policy |= PROTECTED_TWT_SUPPORTED;
if (link->twt_broadcast)
twt_policy |= BROADCAST_TWT_SUPPORTED;
}
if (!iwlwifi_mod_params.disable_11ax)
cmd->client.data_policy |= cpu_to_le16(twt_policy);
if (vif->probe_req_reg && vif->cfg.assoc && vif->p2p)
cmd->filter_flags |=
cpu_to_le32(MAC_CFG_FILTER_ACCEPT_PROBE_REQ);
}
static void iwl_mld_fill_mac_cmd_ap(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mac_config_cmd *cmd)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
lockdep_assert_wiphy(mld->wiphy);
WARN_ON(vif->type != NL80211_IFTYPE_AP);
cmd->filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_PROBE_REQ);
/* in AP mode, pass beacons from other APs (needed for ht protection).
* When there ' re no any associated station , which means that we are not
* TXing anyway , don ' t ask FW to pass beacons to prevent unnecessary
* wake - ups .
*/
if (mld_vif->num_associated_stas)
cmd->filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_BEACON);
}
static void iwl_mld_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif)
{
bool *go_active = _data;
if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO &&
iwl_mld_vif_from_mac80211(vif)->ap_ibss_active)
*go_active = true ;
}
static bool iwl_mld_p2p_dev_has_extended_disc(struct iwl_mld *mld)
{
bool go_active = false ;
/* This flag should be set to true when the P2P Device is
* discoverable and there is at least a P2P GO . Setting
* this flag will allow the P2P Device to be discoverable on other
* channels in addition to its listen channel .
* Note that this flag should not be set in other cases as it opens the
* Rx filters on all MAC and increases the number of interrupts .
*/
ieee80211_iterate_active_interfaces(mld->hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
iwl_mld_go_iterator, &go_active);
return go_active;
}
static void iwl_mld_fill_mac_cmd_p2p_dev(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mac_config_cmd *cmd)
{
bool ext_disc = iwl_mld_p2p_dev_has_extended_disc(mld);
lockdep_assert_wiphy(mld->wiphy);
/* Override the filter flags to accept all management frames. This is
* needed to support both P2P device discovery using probe requests and
* P2P service discovery using action frames
*/
cmd->filter_flags = cpu_to_le32(MAC_CFG_FILTER_ACCEPT_CONTROL_AND_MGMT);
if (ext_disc)
cmd->p2p_dev.is_disc_extended = cpu_to_le32(1 );
}
static void iwl_mld_fill_mac_cmd_ibss(struct iwl_mld *mld,
struct ieee80211_vif *vif,
struct iwl_mac_config_cmd *cmd)
{
lockdep_assert_wiphy(mld->wiphy);
WARN_ON(vif->type != NL80211_IFTYPE_ADHOC);
cmd->filter_flags |= cpu_to_le32(MAC_CFG_FILTER_ACCEPT_BEACON |
MAC_CFG_FILTER_ACCEPT_PROBE_REQ |
MAC_CFG_FILTER_ACCEPT_GRP);
}
static int
iwl_mld_rm_mac_from_fw(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
struct iwl_mac_config_cmd cmd = {
.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
.id_and_color = cpu_to_le32(mld_vif->fw_id),
};
return iwl_mld_send_mac_cmd(mld, &cmd);
}
int iwl_mld_mac_fw_action(struct iwl_mld *mld, struct ieee80211_vif *vif,
u32 action)
{
struct iwl_mac_config_cmd cmd = {};
lockdep_assert_wiphy(mld->wiphy);
if (action == FW_CTXT_ACTION_REMOVE)
return iwl_mld_rm_mac_from_fw(mld, vif);
iwl_mld_mac_cmd_fill_common(mld, vif, &cmd, action);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
iwl_mld_fill_mac_cmd_sta(mld, vif, action, &cmd);
break ;
case NL80211_IFTYPE_AP:
iwl_mld_fill_mac_cmd_ap(mld, vif, &cmd);
break ;
case NL80211_IFTYPE_MONITOR:
cmd.filter_flags =
cpu_to_le32(MAC_CFG_FILTER_PROMISC |
MAC_CFG_FILTER_ACCEPT_CONTROL_AND_MGMT |
MAC_CFG_FILTER_ACCEPT_BEACON |
MAC_CFG_FILTER_ACCEPT_PROBE_REQ |
MAC_CFG_FILTER_ACCEPT_GRP);
break ;
case NL80211_IFTYPE_P2P_DEVICE:
iwl_mld_fill_mac_cmd_p2p_dev(mld, vif, &cmd);
break ;
case NL80211_IFTYPE_ADHOC:
iwl_mld_fill_mac_cmd_ibss(mld, vif, &cmd);
break ;
default :
WARN(1 , "not supported yet\n" );
return -EOPNOTSUPP;
}
return iwl_mld_send_mac_cmd(mld, &cmd);
}
static void iwl_mld_mlo_scan_start_wk(struct wiphy *wiphy,
struct wiphy_work *wk)
{
struct iwl_mld_vif *mld_vif = container_of(wk, struct iwl_mld_vif,
mlo_scan_start_wk.work);
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw);
iwl_mld_int_mlo_scan(mld, iwl_mld_vif_to_mac80211(mld_vif));
}
IWL_MLD_ALLOC_FN(vif, vif)
/* Constructor function for struct iwl_mld_vif */
static int
iwl_mld_init_vif(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
int ret;
lockdep_assert_wiphy(mld->wiphy);
mld_vif->mld = mld;
mld_vif->roc_activity = ROC_NUM_ACTIVITIES;
ret = iwl_mld_allocate_vif_fw_id(mld, &mld_vif->fw_id, vif);
if (ret)
return ret;
if (!mld->fw_status.in_hw_restart) {
wiphy_work_init(&mld_vif->emlsr.unblock_tpt_wk,
iwl_mld_emlsr_unblock_tpt_wk);
wiphy_delayed_work_init(&mld_vif->emlsr.check_tpt_wk,
iwl_mld_emlsr_check_tpt);
wiphy_delayed_work_init(&mld_vif->emlsr.prevent_done_wk,
iwl_mld_emlsr_prevent_done_wk);
wiphy_delayed_work_init(&mld_vif->emlsr.tmp_non_bss_done_wk,
iwl_mld_emlsr_tmp_non_bss_done_wk);
wiphy_delayed_work_init(&mld_vif->mlo_scan_start_wk,
iwl_mld_mlo_scan_start_wk);
}
iwl_mld_init_internal_sta(&mld_vif->aux_sta);
return 0 ;
}
int iwl_mld_add_vif(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
int ret;
lockdep_assert_wiphy(mld->wiphy);
ret = iwl_mld_init_vif(mld, vif);
if (ret)
return ret;
ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_ADD);
if (ret)
RCU_INIT_POINTER(mld->fw_id_to_vif[mld_vif->fw_id], NULL);
return ret;
}
int iwl_mld_rm_vif(struct iwl_mld *mld, struct ieee80211_vif *vif)
{
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
int ret;
lockdep_assert_wiphy(mld->wiphy);
ret = iwl_mld_mac_fw_action(mld, vif, FW_CTXT_ACTION_REMOVE);
if (WARN_ON(mld_vif->fw_id >= ARRAY_SIZE(mld->fw_id_to_vif)))
return -EINVAL;
RCU_INIT_POINTER(mld->fw_id_to_vif[mld_vif->fw_id], NULL);
iwl_mld_cancel_notifications_of_object(mld, IWL_MLD_OBJECT_TYPE_VIF,
mld_vif->fw_id);
return ret;
}
void iwl_mld_set_vif_associated(struct iwl_mld *mld,
struct ieee80211_vif *vif)
{
struct ieee80211_bss_conf *link;
unsigned int link_id;
for_each_vif_active_link(vif, link, link_id) {
if (iwl_mld_link_set_associated(mld, vif, link))
IWL_ERR(mld, "failed to update link %d\n" , link_id);
}
iwl_mld_recalc_multicast_filter(mld);
}
static void iwl_mld_get_fw_id_bss_bitmap_iter(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
u8 *fw_id_bitmap = _data;
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION)
return ;
*fw_id_bitmap |= BIT(mld_vif->fw_id);
}
u8 iwl_mld_get_fw_bss_vifs_ids(struct iwl_mld *mld)
{
u8 fw_id_bitmap = 0 ;
ieee80211_iterate_active_interfaces_mtx(mld->hw,
IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER,
iwl_mld_get_fw_id_bss_bitmap_iter,
&fw_id_bitmap);
return fw_id_bitmap;
}
void iwl_mld_handle_probe_resp_data_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt)
{
const struct iwl_probe_resp_data_notif *notif = (void *)pkt->data;
struct iwl_probe_resp_data *old_data, *new_data;
struct ieee80211_vif *vif;
struct iwl_mld_link *mld_link;
IWL_DEBUG_INFO(mld, "Probe response data notif: noa %d, csa %d\n" ,
notif->noa_active, notif->csa_counter);
if (IWL_FW_CHECK(mld, le32_to_cpu(notif->mac_id) >=
ARRAY_SIZE(mld->fw_id_to_vif),
"mac id is invalid: %d\n" ,
le32_to_cpu(notif->mac_id)))
return ;
vif = wiphy_dereference(mld->wiphy,
mld->fw_id_to_vif[le32_to_cpu(notif->mac_id)]);
/* the firmware gives us the mac_id (and not the link_id), mac80211
* gets a vif and not a link , bottom line , this flow is not MLD ready
* yet .
*/
if (WARN_ON(!vif) || ieee80211_vif_is_mld(vif))
return ;
if (notif->csa_counter != IWL_PROBE_RESP_DATA_NO_CSA &&
notif->csa_counter >= 1 )
ieee80211_beacon_set_cntdwn(vif, notif->csa_counter);
if (!vif->p2p)
return ;
mld_link = &iwl_mld_vif_from_mac80211(vif)->deflink;
new_data = kzalloc(sizeof (*new_data), GFP_KERNEL);
if (!new_data)
return ;
memcpy(&new_data->notif, notif, sizeof (new_data->notif));
/* noa_attr contains 1 reserved byte, need to substruct it */
new_data->noa_len = sizeof (struct ieee80211_vendor_ie) +
sizeof (new_data->notif.noa_attr) - 1 ;
/*
* If it ' s a one time NoA , only one descriptor is needed ,
* adjust the length according to len_low .
*/
if (new_data->notif.noa_attr.len_low ==
sizeof (struct ieee80211_p2p_noa_desc) + 2 )
new_data->noa_len -= sizeof (struct ieee80211_p2p_noa_desc);
old_data = wiphy_dereference(mld->wiphy, mld_link->probe_resp_data);
rcu_assign_pointer(mld_link->probe_resp_data, new_data);
if (old_data)
kfree_rcu(old_data, rcu_head);
}
void iwl_mld_handle_uapsd_misbehaving_ap_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt)
{
struct iwl_uapsd_misbehaving_ap_notif *notif = (void *)pkt->data;
struct ieee80211_vif *vif;
if (IWL_FW_CHECK(mld, notif->mac_id >= ARRAY_SIZE(mld->fw_id_to_vif),
"mac id is invalid: %d\n" , notif->mac_id))
return ;
vif = wiphy_dereference(mld->wiphy, mld->fw_id_to_vif[notif->mac_id]);
if (WARN_ON(!vif) || ieee80211_vif_is_mld(vif))
return ;
IWL_WARN(mld, "uapsd misbehaving AP: %pM\n" , vif->bss_conf.bssid);
}
void iwl_mld_handle_datapath_monitor_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt)
{
struct iwl_datapath_monitor_notif *notif = (void *)pkt->data;
struct ieee80211_bss_conf *link;
struct ieee80211_supported_band *sband;
const struct ieee80211_sta_he_cap *he_cap;
struct ieee80211_vif *vif;
struct iwl_mld_vif *mld_vif;
if (notif->type != cpu_to_le32(IWL_DP_MON_NOTIF_TYPE_EXT_CCA))
return ;
link = iwl_mld_fw_id_to_link_conf(mld, notif->link_id);
if (WARN_ON(!link))
return ;
vif = link->vif;
if (WARN_ON(!vif) || vif->type != NL80211_IFTYPE_STATION ||
!vif->cfg.assoc)
return ;
if (!link->chanreq.oper.chan ||
link->chanreq.oper.chan->band != NL80211_BAND_2GHZ ||
link->chanreq.oper.width < NL80211_CHAN_WIDTH_40)
return ;
mld_vif = iwl_mld_vif_from_mac80211(vif);
/* this shouldn't happen *again*, ignore it */
if (mld_vif->cca_40mhz_workaround != CCA_40_MHZ_WA_NONE)
return ;
mld_vif->cca_40mhz_workaround = CCA_40_MHZ_WA_RECONNECT;
/*
* This capability manipulation isn ' t really ideal , but it ' s the
* easiest choice - otherwise we ' d have to do some major changes
* in mac80211 to support this , which isn ' t worth it . This does
* mean that userspace may have outdated information , but that ' s
* actually not an issue at all .
*/
sband = mld->wiphy->bands[NL80211_BAND_2GHZ];
WARN_ON(!sband->ht_cap.ht_supported);
WARN_ON(!(sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40));
sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);
if (he_cap) {
/* we know that ours is writable */
struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap;
WARN_ON(!he->has_he);
WARN_ON(!(he->he_cap_elem.phy_cap_info[0 ] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G));
he->he_cap_elem.phy_cap_info[0 ] &=
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
}
ieee80211_disconnect(vif, true );
}
void iwl_mld_reset_cca_40mhz_workaround(struct iwl_mld *mld,
struct ieee80211_vif *vif)
{
struct ieee80211_supported_band *sband;
const struct ieee80211_sta_he_cap *he_cap;
struct iwl_mld_vif *mld_vif = iwl_mld_vif_from_mac80211(vif);
if (vif->type != NL80211_IFTYPE_STATION)
return ;
if (mld_vif->cca_40mhz_workaround == CCA_40_MHZ_WA_NONE)
return ;
/* Now we are just reconnecting with the new capabilities,
* but remember to reset the capabilities when we disconnect for real
*/
if (mld_vif->cca_40mhz_workaround == CCA_40_MHZ_WA_RECONNECT) {
mld_vif->cca_40mhz_workaround = CCA_40_MHZ_WA_RESET;
return ;
}
/* Now cca_40mhz_workaround == CCA_40_MHZ_WA_RESET */
sband = mld->wiphy->bands[NL80211_BAND_2GHZ];
sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
he_cap = ieee80211_get_he_iftype_cap_vif(sband, vif);
if (he_cap) {
/* we know that ours is writable */
struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap;
he->he_cap_elem.phy_cap_info[0 ] |=
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
}
mld_vif->cca_40mhz_workaround = CCA_40_MHZ_WA_NONE;
}
struct ieee80211_vif *iwl_mld_get_bss_vif(struct iwl_mld *mld)
{
unsigned long fw_id_bitmap = iwl_mld_get_fw_bss_vifs_ids(mld);
int fw_id;
if (hweight8(fw_id_bitmap) != 1 )
return NULL;
fw_id = __ffs(fw_id_bitmap);
return wiphy_dereference(mld->wiphy,
mld->fw_id_to_vif[fw_id]);
}
Messung V0.5 in Prozent C=92 H=98 G=94
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-10-11)
¤
*© Formatika GbR, Deutschland