[DCCP]: Move dccp_[un]hash from ipv4.c to the core

As this is used by both ipv4 and ipv6 and is not ipv4 specific.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 1c32def..64806fb 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -97,6 +97,20 @@
 
 EXPORT_SYMBOL_GPL(dccp_state_name);
 
+void dccp_hash(struct sock *sk)
+{
+	inet_hash(&dccp_hashinfo, sk);
+}
+
+EXPORT_SYMBOL_GPL(dccp_hash);
+
+void dccp_unhash(struct sock *sk)
+{
+	inet_unhash(&dccp_hashinfo, sk);
+}
+
+EXPORT_SYMBOL_GPL(dccp_unhash);
+
 int dccp_init_sock(struct sock *sk)
 {
 	struct dccp_sock *dp = dccp_sk(sk);