[NETNS]: Add an empty netns_dccp structure on struct net.

According to the overall struct net design, it will be
filled with DCCP-related members.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 0ab62ed..e2aee26 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -13,6 +13,7 @@
 #include <net/netns/packet.h>
 #include <net/netns/ipv4.h>
 #include <net/netns/ipv6.h>
+#include <net/netns/dccp.h>
 #include <net/netns/x_tables.h>
 
 struct proc_dir_entry;
@@ -54,6 +55,9 @@
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
 	struct netns_ipv6	ipv6;
 #endif
+#if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE)
+	struct netns_dccp	dccp;
+#endif
 #ifdef CONFIG_NETFILTER
 	struct netns_xt		xt;
 #endif