sunvnet: clean up objects created in vnet_new() on vnet_exit()
authorSowmini Varadhan <sowmini.varadhan@oracle.com>
Wed, 16 Jul 2014 14:02:26 +0000 (10:02 -0400)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 6 Aug 2014 17:07:39 +0000 (18:07 +0100)
[ Upstream commit a4b70a07ed12a71131cab7adce2ce91c71b37060 ]

Nothing cleans up the objects created by
vnet_new(), they are completely leaked.

vnet_exit(), after doing the vio_unregister_driver() to clean
up ports, should call a helper function that iterates over vnet_list
and cleans up those objects. This includes unregister_netdevice()
as well as free_netdev().

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Reviewed-by: Karl Volz <karl.volz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/net/ethernet/sun/sunvnet.c

index bd08919..5092148 100644 (file)
@@ -1089,6 +1089,24 @@ static struct vnet * __devinit vnet_find_or_create(const u64 *local_mac)
        return vp;
 }
 
+static void vnet_cleanup(void)
+{
+       struct vnet *vp;
+       struct net_device *dev;
+
+       mutex_lock(&vnet_list_mutex);
+       while (!list_empty(&vnet_list)) {
+               vp = list_first_entry(&vnet_list, struct vnet, list);
+               list_del(&vp->list);
+               dev = vp->dev;
+               /* vio_unregister_driver() should have cleaned up port_list */
+               BUG_ON(!list_empty(&vp->port_list));
+               unregister_netdev(dev);
+               free_netdev(dev);
+       }
+       mutex_unlock(&vnet_list_mutex);
+}
+
 static const char *local_mac_prop = "local-mac-address";
 
 static struct vnet * __devinit vnet_find_parent(struct mdesc_handle *hp,
@@ -1249,7 +1267,6 @@ static int vnet_port_remove(struct vio_dev *vdev)
 
                kfree(port);
 
-               unregister_netdev(vp->dev);
        }
        return 0;
 }
@@ -1280,6 +1297,7 @@ static int __init vnet_init(void)
 static void __exit vnet_exit(void)
 {
        vio_unregister_driver(&vnet_port_driver);
+       vnet_cleanup();
 }
 
 module_init(vnet_init);