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mac80211: drop 4-addr VLAN frames earlier if not connected

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If there's no station on the 4-addr VLAN interface, then frames
cannot be transmitted. Drop such frames earlier, before setting
up all the information for them.

We should keep the old check though since that code might be used
for other internally-generated frames.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2015-03-20 14:05:02 +01:00
parent 5041006c42
commit a8d15ff005
1 changed files with 3 additions and 0 deletions
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3
net/mac80211/tx.c
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@ -1842,6 +1842,9 @@ static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
authorized = test_sta_flag(sta, WLAN_STA_AUTHORIZED);
wme_sta = sta->sta.wme;
have_station = true;
} else if (sdata->wdev.use_4addr) {
ret = -ENOLINK;
goto free;
}
ap_sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
u.ap);