netdev - [PATCH net-next v2 12/12] netfilter: nf_conntrack_l4proto

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Date:	Sat, 16 Jun 2012 11:41:23 +0800
From:	Gao feng <gaofeng@...fujitsu.com>
To:	pablo@...filter.org
Cc:	netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
	Gao feng <gaofeng@...fujitsu.com>
Subject: [PATCH net-next v2 12/12] netfilter: nf_conntrack_l4proto_icmpv6 cleanup

add function icmpv6_kmemdup_sysctl_table to make codes
more clearer.

Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
---
 net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c |   18 ++++++++++++++----
 1 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 807ae09..5ef2c9d 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -333,22 +333,32 @@ static struct ctl_table icmpv6_sysctl_table[] = {
 };
 #endif /* CONFIG_SYSCTL */
 
-static int icmpv6_init_net(struct net *net, u_int16_t proto)
+static int icmpv6_kmemdup_sysctl_table(struct nf_proto_net *pn)
 {
-	struct nf_icmp_net *in = icmpv6_pernet(net);
-	struct nf_proto_net *pn = (struct nf_proto_net *)in;
-	in->timeout = nf_ct_icmpv6_timeout;
 #ifdef CONFIG_SYSCTL
+	struct nf_icmp_net *in = (struct nf_icmp_net *)pn;
+
 	pn->ctl_table = kmemdup(icmpv6_sysctl_table,
 				sizeof(icmpv6_sysctl_table),
 				GFP_KERNEL);
 	if (!pn->ctl_table)
 		return -ENOMEM;
+
 	pn->ctl_table[0].data = &in->timeout;
 #endif
 	return 0;
 }
 
+static int icmpv6_init_net(struct net *net, u_int16_t proto)
+{
+	struct nf_icmp_net *in = icmpv6_pernet(net);
+	struct nf_proto_net *pn = &in->pn;
+
+	in->timeout = nf_ct_icmpv6_timeout;
+
+	return icmpv6_kmemdup_sysctl_table(pn);
+}
+
 struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
 {
 	.l3proto		= PF_INET6,
-- 
1.7.7.6

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