From: Eric W. Biederman <ebiederm@xmission.com>
Date: Sun, 29 Nov 2009 15:46:08 +0000 (+0000)
Subject: net: Simplify conntrack_proto_gre pernet operations.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e8d02885997081f09272af6b9a27061a142da4c5;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

net: Simplify conntrack_proto_gre 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/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 91d0e719d67c..c99cfba64ddc 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -300,32 +300,24 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = {
 
 static int proto_gre_net_init(struct net *net)
 {
-	struct netns_proto_gre *net_gre;
-	int rv;
+	struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id);
 
-	net_gre = kmalloc(sizeof(struct netns_proto_gre), GFP_KERNEL);
-	if (!net_gre)
-		return -ENOMEM;
 	rwlock_init(&net_gre->keymap_lock);
 	INIT_LIST_HEAD(&net_gre->keymap_list);
 
-	rv = net_assign_generic(net, proto_gre_net_id, net_gre);
-	if (rv < 0)
-		kfree(net_gre);
-	return rv;
+	return 0;
 }
 
 static void proto_gre_net_exit(struct net *net)
 {
-	struct netns_proto_gre *net_gre = net_generic(net, proto_gre_net_id);
-
 	nf_ct_gre_keymap_flush(net);
-	kfree(net_gre);
 }
 
 static struct pernet_operations proto_gre_net_ops = {
 	.init = proto_gre_net_init,
 	.exit = proto_gre_net_exit,
+	.id   = &proto_gre_net_id,
+	.size = sizeof(struct netns_proto_gre),
 };
 
 static int __init nf_ct_proto_gre_init(void)
@@ -335,7 +327,7 @@ static int __init nf_ct_proto_gre_init(void)
 	rv = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_gre4);
 	if (rv < 0)
 		return rv;
-	rv = register_pernet_gen_subsys(&proto_gre_net_id, &proto_gre_net_ops);
+	rv = register_pernet_subsys(&proto_gre_net_ops);
 	if (rv < 0)
 		nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
 	return rv;
@@ -344,7 +336,7 @@ static int __init nf_ct_proto_gre_init(void)
 static void __exit nf_ct_proto_gre_fini(void)
 {
 	nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_gre4);
-	unregister_pernet_gen_subsys(proto_gre_net_id, &proto_gre_net_ops);
+	unregister_pernet_subsys(&proto_gre_net_ops);
 }
 
 module_init(nf_ct_proto_gre_init);