net: Simplify ipip pernet operations.

Take advantage of the new pernet automatic storage management,
and stop using compatibility network namespace functions.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 7242ffc..eda04fe 100644 (file)
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -775,17 +775,8 @@ static void ipip_destroy_tunnels(struct ipip_net *ipn, struct list_head *head)
 
 static int ipip_init_net(struct net *net)
 {
+       struct ipip_net *ipn = net_generic(net, ipip_net_id);
        int err;
-       struct ipip_net *ipn;
-
-       err = -ENOMEM;
-       ipn = kzalloc(sizeof(struct ipip_net), GFP_KERNEL);
-       if (ipn == NULL)
-               goto err_alloc;
-
-       err = net_assign_generic(net, ipip_net_id, ipn);
-       if (err < 0)
-               goto err_assign;
 
        ipn->tunnels[0] = ipn->tunnels_wc;
        ipn->tunnels[1] = ipn->tunnels_l;
@@ -812,29 +803,26 @@ err_reg_dev:
        free_netdev(ipn->fb_tunnel_dev);
 err_alloc_dev:
        /* nothing */
-err_assign:
-       kfree(ipn);
-err_alloc:
        return err;
 }
 
 static void ipip_exit_net(struct net *net)
 {
-       struct ipip_net *ipn;
+       struct ipip_net *ipn = net_generic(net, ipip_net_id);
        LIST_HEAD(list);
 
-       ipn = net_generic(net, ipip_net_id);
        rtnl_lock();
        ipip_destroy_tunnels(ipn, &list);
        unregister_netdevice_queue(ipn->fb_tunnel_dev, &list);
        unregister_netdevice_many(&list);
        rtnl_unlock();
-       kfree(ipn);
 }
 
 static struct pernet_operations ipip_net_ops = {
        .init = ipip_init_net,
        .exit = ipip_exit_net,
+       .id   = &ipip_net_id,
+       .size = sizeof(struct ipip_net),
 };
 
 static int __init ipip_init(void)
@@ -848,7 +836,7 @@ static int __init ipip_init(void)
                return -EAGAIN;
        }
 
-       err = register_pernet_gen_device(&ipip_net_id, &ipip_net_ops);
+       err = register_pernet_device(&ipip_net_ops);
        if (err)
                xfrm4_tunnel_deregister(&ipip_handler, AF_INET);
 
@@ -860,7 +848,7 @@ static void __exit ipip_fini(void)
        if (xfrm4_tunnel_deregister(&ipip_handler, AF_INET))
                printk(KERN_INFO "ipip close: can't deregister tunnel\n");
 
-       unregister_pernet_gen_device(ipip_net_id, &ipip_net_ops);
+       unregister_pernet_device(&ipip_net_ops);
 }
 
 module_init(ipip_init);