gre: Optimize multiple unregistration.

[sliver-openvswitch.git] / datapath / linux-2.6 / compat-2.6 / ip_gre.c

diff --git a/datapath/linux-2.6/compat-2.6/ip_gre.c b/datapath/linux-2.6/compat-2.6/ip_gre.c
index 8df5555..7b23d1a 100644 (file)
--- a/datapath/linux-2.6/compat-2.6/ip_gre.c
+++ b/datapath/linux-2.6/compat-2.6/ip_gre.c
@@ -1446,16 +1446,19 @@ static const struct net_protocol ipgre_protocol = {
 #endif
 };
 
-static void ipgre_destroy_tunnels(struct ipgre_net *ign)
+static void ipgre_destroy_tunnels(struct ipgre_net *ign, struct list_head *head)
 {
        int prio;
 
        for (prio = 0; prio < 4; prio++) {
                int h;
                for (h = 0; h < HASH_SIZE; h++) {
-                       struct ip_tunnel *t;
-                       while ((t = ign->tunnels[prio][h]) != NULL)
-                               unregister_netdevice(t->dev);
+                       struct ip_tunnel *t = ign->tunnels[prio][h];
+
+                       while (t != NULL) {
+                               unregister_netdevice_queue(t->dev, head);
+                               t = t->next;
+                       }
                }
        }
 }
@@ -1509,10 +1512,12 @@ err_alloc:
 static void ipgre_exit_net(struct net *net)
 {
        struct ipgre_net *ign;
+       LIST_HEAD(list);
 
        ign = net_generic(net, ipgre_net_id);
        rtnl_lock();
-       ipgre_destroy_tunnels(ign);
+       ipgre_destroy_tunnels(ign, &list);
+       unregister_netdevice_many(&list);
        rtnl_unlock();
        kfree(ign);
 }