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Do not override WDS VLAN assignment for STA

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The 4-address frames WDS design in mac80211 uses VLAN interfaces
similarly to the way VLAN interfaces based on VLAN IDs are used. The EAP
authentication case ended up overriding the WDS specific assignment even
when the RADIUS server did not assign any specific VLAN for the STA.
This broke WDS traffic.

Fix this by skipping VLAN assignment to VLAN ID 0 for STAs that have
been detected to use 4-address frames.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2020-03-07 13:56:56 +02:00
parent 87998f80e7
commit 43ededa9c7
1 changed files with 7 additions and 0 deletions
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7
src/ap/sta_info.c
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@ -1027,6 +1027,13 @@ int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta)
int ret;
int old_vlanid = sta->vlan_id_bound;
if ((sta->flags & WLAN_STA_WDS) && sta->vlan_id == 0) {
wpa_printf(MSG_DEBUG,
"Do not override WDS VLAN assignment for STA "
MACSTR, MAC2STR(sta->addr));
return 0;
}
iface = hapd->conf->iface;
if (hapd->conf->ssid.vlan[0])
iface = hapd->conf->ssid.vlan;