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mac80211: fix enabling 4-address mode on a sta vif after assoc

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[ Upstream commit a5d3cbdb09ff1f52cbe040932e06c8b9915c6dad ]

Notify the driver about the 4-address mode change and also send a nulldata
packet to the AP to notify it about the change

Fixes: 1ff4e8f2de ("mac80211: notify the driver when a sta uses 4-address mode")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210702050111.47546-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Fietkau 2021-07-02 07:01:11 +02:00 committed by Greg Kroah-Hartman
parent 076bc6ebce
commit ac038f4152
3 changed files with 23 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
net/mac80211/cfg.c
View File

@ -152,6 +152,8 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
struct vif_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
int ret;
ret = ieee80211_if_change_type(sdata, type);
@ -162,7 +164,24 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
ieee80211_check_fast_rx_iface(sdata);
} else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) {
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
if (params->use_4addr == ifmgd->use_4addr)
return 0;
sdata->u.mgd.use_4addr = params->use_4addr;
if (!ifmgd->associated)
return 0;
mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, ifmgd->bssid);
if (sta)
drv_sta_set_4addr(local, sdata, &sta->sta,
params->use_4addr);
mutex_unlock(&local->sta_mtx);
if (params->use_4addr)
ieee80211_send_4addr_nullfunc(local, sdata);
}
if (sdata->vif.type == NL80211_IFTYPE_MONITOR) {

2
net/mac80211/ieee80211_i.h
View File

@ -2051,6 +2051,8 @@ void ieee80211_dynamic_ps_timer(struct timer_list *t);
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
bool powersave);
void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr, bool ack, u16 tx_time);

4
net/mac80211/mlme.c
View File

@ -1115,8 +1115,8 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
ieee80211_tx_skb(sdata, skb);
}
static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
{
struct sk_buff *skb;
struct ieee80211_hdr *nullfunc;