netfilter: nf_conntrack: add namespace support for cttimeout

This patch adds namespace support for cttimeout.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index db7abad..360565a 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -156,13 +156,15 @@
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter/nfnetlink_cttimeout.h>
 
-static int udp_timeout_nlattr_to_obj(struct nlattr *tb[], void *data)
+static int udp_timeout_nlattr_to_obj(struct nlattr *tb[],
+				     struct net *net, void *data)
 {
 	unsigned int *timeouts = data;
+	struct nf_udp_net *un = udp_pernet(net);
 
 	/* set default timeouts for UDP. */
-	timeouts[UDP_CT_UNREPLIED] = udp_timeouts[UDP_CT_UNREPLIED];
-	timeouts[UDP_CT_REPLIED] = udp_timeouts[UDP_CT_REPLIED];
+	timeouts[UDP_CT_UNREPLIED] = un->timeouts[UDP_CT_UNREPLIED];
+	timeouts[UDP_CT_REPLIED] = un->timeouts[UDP_CT_REPLIED];
 
 	if (tb[CTA_TIMEOUT_UDP_UNREPLIED]) {
 		timeouts[UDP_CT_UNREPLIED] =