[UDP]: Make full use of proto.h.udp_hash innovation.

After this we have only udp_lib_get_port to get the port and two 
stubs for ipv4 and ipv6. No difference in udp and udplite except
for initialized h.udp_hash member.

I tried to find a graceful way to drop the only difference between
udp_v4_get_port and udp_v6_get_port (i.e. the rcv_saddr comparison 
routine), but adding one more callback on the struct proto didn't 
appear such :( Maybe later.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index af619d4..5f5d121 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -51,9 +51,9 @@
 #include <linux/seq_file.h>
 #include "udp_impl.h"
 
-static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
+int udp_v6_get_port(struct sock *sk, unsigned short snum)
 {
-	return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
+	return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal);
 }
 
 static struct sock *__udp6_lib_lookup(struct net *net,
@@ -1024,6 +1024,7 @@
 	.sysctl_wmem	   = &sysctl_udp_wmem_min,
 	.sysctl_rmem	   = &sysctl_udp_rmem_min,
 	.obj_size	   = sizeof(struct udp6_sock),
+	.h.udp_hash	   = udp_hash,
 #ifdef CONFIG_COMPAT
 	.compat_setsockopt = compat_udpv6_setsockopt,
 	.compat_getsockopt = compat_udpv6_getsockopt,
diff --git a/net/ipv6/udp_impl.h b/net/ipv6/udp_impl.h
index 21be3a8..321b81a 100644
--- a/net/ipv6/udp_impl.h
+++ b/net/ipv6/udp_impl.h
@@ -11,6 +11,8 @@
 extern void 	__udp6_lib_err(struct sk_buff *, struct inet6_skb_parm *,
 			       int , int , int , __be32 , struct hlist_head []);
 
+extern int	udp_v6_get_port(struct sock *sk, unsigned short snum);
+
 extern int	udpv6_getsockopt(struct sock *sk, int level, int optname,
 				 char __user *optval, int __user *optlen);
 extern int	udpv6_setsockopt(struct sock *sk, int level, int optname,
diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c
index 815190b..93e52e0 100644
--- a/net/ipv6/udplite.c
+++ b/net/ipv6/udplite.c
@@ -35,11 +35,6 @@
 	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
 };
 
-static int udplite_v6_get_port(struct sock *sk, unsigned short snum)
-{
-	return udplite_get_port(sk, snum, ipv6_rcv_saddr_equal);
-}
-
 DEFINE_PROTO_INUSE(udplitev6)
 
 struct proto udplitev6_prot = {
@@ -58,8 +53,9 @@
 	.backlog_rcv	   = udpv6_queue_rcv_skb,
 	.hash		   = udp_lib_hash,
 	.unhash		   = udp_lib_unhash,
-	.get_port	   = udplite_v6_get_port,
+	.get_port	   = udp_v6_get_port,
 	.obj_size	   = sizeof(struct udp6_sock),
+	.h.udp_hash	   = udplite_hash,
 #ifdef CONFIG_COMPAT
 	.compat_setsockopt = compat_udpv6_setsockopt,
 	.compat_getsockopt = compat_udpv6_getsockopt,