net: Simplify pppol2tp 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>

1 files changed, 7 insertions, 29 deletions

diff --git a/drivers/net/pppol2tp.c b/drivers/net/pppol2tp.c
index c58b50f8ba3b..9fbb2eba9a06 100644
--- a/drivers/net/pppol2tp.c
+++ b/drivers/net/pppol2tp.c
@@ -2605,53 +2605,31 @@ static struct pppox_proto pppol2tp_proto = {
 
 static __net_init int pppol2tp_init_net(struct net *net)
 {
-        struct pppol2tp_net *pn;
+        struct pppol2tp_net *pn = pppol2tp_pernet(net);
         struct proc_dir_entry *pde;
-        int err;
-
-        pn = kzalloc(sizeof(*pn), GFP_KERNEL);
-        if (!pn)
-                return -ENOMEM;
 
         INIT_LIST_HEAD(&pn->pppol2tp_tunnel_list);
         rwlock_init(&pn->pppol2tp_tunnel_list_lock);
 
-        err = net_assign_generic(net, pppol2tp_net_id, pn);
-        if (err)
-                goto out;
-
         pde = proc_net_fops_create(net, "pppol2tp", S_IRUGO, &pppol2tp_proc_fops);
 #ifdef CONFIG_PROC_FS
-        if (!pde) {
-                err = -ENOMEM;
-                goto out;
-        }
+        if (!pde)
+                return -ENOMEM;
 #endif
 
         return 0;
-
-out:
-        kfree(pn);
-        return err;
 }
 
 static __net_exit void pppol2tp_exit_net(struct net *net)
 {
-        struct pppoe_net *pn;
-
         proc_net_remove(net, "pppol2tp");
-        pn = net_generic(net, pppol2tp_net_id);
-        /*
-         * if someone has cached our net then
-         * further net_generic call will return NULL
-         */
-        net_assign_generic(net, pppol2tp_net_id, NULL);
-        kfree(pn);
 }
 
 static struct pernet_operations pppol2tp_net_ops = {
         .init = pppol2tp_init_net,
         .exit = pppol2tp_exit_net,
+        .id   = &pppol2tp_net_id,
+        .size = sizeof(struct pppol2tp_net),
 };
 
 static int __init pppol2tp_init(void)
@@ -2665,7 +2643,7 @@ static int __init pppol2tp_init(void)
         if (err)
                 goto out_unregister_pppol2tp_proto;
 
-        err = register_pernet_gen_device(&pppol2tp_net_id, &pppol2tp_net_ops);
+        err = register_pernet_device(&pppol2tp_net_ops);
         if (err)
                 goto out_unregister_pppox_proto;
 
@@ -2684,7 +2662,7 @@ out_unregister_pppol2tp_proto:
 static void __exit pppol2tp_exit(void)
 {
         unregister_pppox_proto(PX_PROTO_OL2TP);
-        unregister_pernet_gen_device(pppol2tp_net_id, &pppol2tp_net_ops);
+        unregister_pernet_device(&pppol2tp_net_ops);
         proto_unregister(&pppol2tp_sk_proto);
 }