[IPV6]: Generalise tcp_v6_search_req & tcp_v6_synq_add

More work is needed tho to introduce inet6_request_sock from
tcp6_request_sock, in the same layout considerations as ipv6_pinfo in
inet_sock, next changeset will do that.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/inet6_connection_sock.h

@@ -0,0 +1,31 @@
+/*
+ * NET		Generic infrastructure for INET6 connection oriented protocols.
+ *
+ * Authors:	Many people, see the TCPv6 sources
+ *
+ * 		From code originally in TCPv6
+ *
+ *		This program is free software; you can redistribute it and/or
+ *		modify it under the terms of the GNU General Public License
+ *		as published by the Free Software Foundation; either version
+ *		2 of the License, or (at your option) any later version.
+ */
+#ifndef _INET6_CONNECTION_SOCK_H
+#define _INET6_CONNECTION_SOCK_H
+
+#include <linux/types.h>
+
+struct sock;
+struct request_sock;
+
+extern struct request_sock *inet6_csk_search_req(const struct sock *sk,
+						 struct request_sock ***prevp,
+						 const __u16 rport,
+						 const struct in6_addr *raddr,
+						 const struct in6_addr *laddr,
+						 const int iif);
+
+extern void inet6_csk_reqsk_queue_hash_add(struct sock *sk,
+					   struct request_sock *req,
+					   const unsigned long timeout);
+#endif /* _INET6_CONNECTION_SOCK_H */