[PATCH 3.16 256/305] batman-adv: Clean up untagged vlan when destroying via rtnl-link

Ben Hutchings
2016-08-14T11:17:03Z

From: Sven Eckelmann <sven@narfation.org>

commit 420cb1b764f9169c5d2601b4af90e4a1702345ee upstream.

The untagged vlan object is only destroyed when the interface is removed
via the legacy sysfs interface. But it also has to be destroyed when the
standard rtnl-link interface is used.

Fixes: 5d2c05b21337 ("batman-adv: add per VLAN interface attribute framework")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: s/_put/_free_ref/]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/batman-adv/soft-interface.c | 9 +++++++++
1 file changed, 9 insertions(+)

--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -975,7 +975,9 @@ void batadv_softif_destroy_sysfs(struct
static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
struct list_head *head)
{
+ struct batadv_priv *bat_priv = netdev_priv(soft_iface);
struct batadv_hard_iface *hard_iface;
+ struct batadv_softif_vlan *vlan;

list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
if (hard_iface->soft_iface == soft_iface)
@@ -983,6 +985,13 @@ static void batadv_softif_destroy_netlin
BATADV_IF_CLEANUP_KEEP);
}

+ /* destroy the "untagged" VLAN */
+ vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
+ if (vlan) {
+ batadv_softif_destroy_vlan(bat_priv, vlan);
+ batadv_softif_vlan_free_ref(vlan);
+ }
+
batadv_sysfs_del_meshif(soft_iface);
unregister_netdevice_queue(soft_iface, head);
}