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authorMichael Braun <michael-dev@fami-braun.de>2015-04-10 12:49:50 (GMT)
committerJouni Malinen <j@w1.fi>2015-04-13 14:08:10 (GMT)
commitc8e6beabb6f9c3f6a9904b78f7a6bec55117eda2 (patch)
treefefe23ee673db626891f1074eda03591f33f12c5 /src/ap/ieee802_11.c
parentde31fb052c896d016e00b7bb36fa6dc7bac52f56 (diff)
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Remove VLAN interface on STA free
Currently, vlan_remove_dynamic() is only called when the station VLAN ID is changed (ap_sta_bind_vlan), but not when the station is freed. So dynamic VLAN interfaces are not removed actually except within 1x reauthentification VLAN ID change, although most of the code is already there. This patch fixes this by calling vlan_remove_dynamic() in ap_free_sta(). It cannot just use sta->vlan_id for this, as this might have been changed without calling ap_sta_bind_vlan() (ap/ieee802_11.c:handle_auth fetches from RADIUS cache for WPA-PSK), thus reference counting might not have been updated. Additionally, reference counting might get wrong due to old_vlanid = 0 being passed unconditionally, thus increasing the reference counter multiple times. So tracking the currently assigned (i.e., dynamic_vlan counter increased) VLAN is done in a new variable sta->vlan_id_bound. Therefore, the old_vlan_id argument of ap_sta_bind_vlan() is no longer needed and setting the VLAN for the sta in driver happens unconditionally. Additionally, vlan->dynamic_vlan is only incremented when it actually is a dynamic VLAN. Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Diffstat (limited to 'src/ap/ieee802_11.c')
-rw-r--r--src/ap/ieee802_11.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c
index 89911b1..3601dfe 100644
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -2473,11 +2473,11 @@ static void handle_assoc_cb(struct hostapd_data *hapd,
* so bind it to the selected VLAN interface now, since the
* interface selection is not going to change anymore.
*/
- if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
+ if (ap_sta_bind_vlan(hapd, sta) < 0)
return;
} else if (sta->vlan_id) {
/* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
- if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
+ if (ap_sta_bind_vlan(hapd, sta) < 0)
return;
}