netdev - [PATCH net-next 37/43] netfilter: nf_defrag: Register netfilter hooks in all network namespaces

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Message-Id: <1434554932-4552-37-git-send-email-ebiederm@xmission.com>
Date:	Wed, 17 Jun 2015 10:28:46 -0500
From:	"Eric W. Biederman" <ebiederm@...ssion.com>
To:	David Miller <davem@...emloft.net>
Cc:	<netdev@...r.kernel.org>, netfilter-devel@...r.kernel.org,
	Stephen Hemminger <stephen@...workplumber.org>,
	Juanjo Ciarlante <jjciarla@...z.uncu.edu.ar>,
	Wensong Zhang <wensong@...ux-vs.org>,
	Simon Horman <horms@...ge.net.au>,
	Julian Anastasov <ja@....bg>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Patrick McHardy <kaber@...sh.net>,
	Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Steffen Klassert <steffen.klassert@...unet.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH net-next 37/43] netfilter: nf_defrag: Register netfilter hooks in all network namespaces

From: Eric W Biederman <ebiederm@...ssion.com>

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 net/ipv4/netfilter/nf_defrag_ipv4.c       | 21 ++++++++++++++++++---
 net/ipv6/netfilter/nf_defrag_ipv6_hooks.c | 21 ++++++++++++++++++---
 2 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/net/ipv4/netfilter/nf_defrag_ipv4.c b/net/ipv4/netfilter/nf_defrag_ipv4.c
index e9f4088d4759..8d5a45ddf9b5 100644
--- a/net/ipv4/netfilter/nf_defrag_ipv4.c
+++ b/net/ipv4/netfilter/nf_defrag_ipv4.c
@@ -109,15 +109,30 @@ static struct nf_hook_ops ipv4_defrag_ops[] = {
 	},
 };
 
-static int __init nf_defrag_init(void)
+static int __net_init nf_defrag_net_init(struct net *net)
 {
-	return nf_register_hooks(&init_net, ipv4_defrag_ops,
+	return nf_register_hooks(net, ipv4_defrag_ops,
 				 ARRAY_SIZE(ipv4_defrag_ops));
 }
 
+static void __net_exit nf_defrag_net_exit(struct net *net)
+{
+	nf_unregister_hooks(net, ipv4_defrag_ops, ARRAY_SIZE(ipv4_defrag_ops));
+}
+
+static struct pernet_operations nf_defrag_net_ops = {
+	.init = nf_defrag_net_init,
+	.exit = nf_defrag_net_exit,
+};
+
+static int __init nf_defrag_init(void)
+{
+	return register_pernet_subsys(&nf_defrag_net_ops);
+}
+
 static void __exit nf_defrag_fini(void)
 {
-	nf_unregister_hooks(&init_net, ipv4_defrag_ops, ARRAY_SIZE(ipv4_defrag_ops));
+	unregister_pernet_subsys(&nf_defrag_net_ops);
 }
 
 void nf_defrag_ipv4_enable(void)
diff --git a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
index 2bd7aa696382..a20d461fbd89 100644
--- a/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
+++ b/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c
@@ -100,6 +100,22 @@ static struct nf_hook_ops ipv6_defrag_ops[] = {
 	},
 };
 
+static int __net_init nf_defrag_net_init(struct net *net)
+{
+	return nf_register_hooks(net, ipv6_defrag_ops,
+				 ARRAY_SIZE(ipv6_defrag_ops));
+}
+
+static void __net_exit nf_defrag_net_exit(struct net *net)
+{
+	nf_unregister_hooks(net, ipv6_defrag_ops, ARRAY_SIZE(ipv6_defrag_ops));
+}
+
+static struct pernet_operations nf_defrag_net_ops = {
+	.init = nf_defrag_net_init,
+	.exit = nf_defrag_net_exit,
+};
+
 static int __init nf_defrag_init(void)
 {
 	int ret = 0;
@@ -109,8 +125,7 @@ static int __init nf_defrag_init(void)
 		pr_err("nf_defrag_ipv6: can't initialize frag6.\n");
 		return ret;
 	}
-	ret = nf_register_hooks(&init_net, ipv6_defrag_ops,
-				ARRAY_SIZE(ipv6_defrag_ops));
+	ret = register_pernet_subsys(&nf_defrag_net_ops);
 	if (ret < 0) {
 		pr_err("nf_defrag_ipv6: can't register hooks\n");
 		goto cleanup_frag6;
@@ -125,7 +140,7 @@ cleanup_frag6:
 
 static void __exit nf_defrag_fini(void)
 {
-	nf_unregister_hooks(&init_net, ipv6_defrag_ops, ARRAY_SIZE(ipv6_defrag_ops));
+	unregister_pernet_subsys(&nf_defrag_net_ops);
 	nf_ct_frag6_cleanup();
 }
 
-- 
2.2.1

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