[IPV6]: Introduce inet6_rsk()

And inet6_rsk_offset in inet_request_sock, for the same reasons as
inet_sock's pinfo6 member.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 04ff443..fe874ee 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -61,7 +61,7 @@
 						     lopt->nr_table_entries)];
 	     (req = *prev) != NULL;
 	     prev = &req->dl_next) {
-		const struct tcp6_request_sock *treq = tcp6_rsk(req);
+		const struct inet6_request_sock *treq = inet6_rsk(req);
 
 		if (inet_rsk(req)->rmt_port == rport &&
 		    req->rsk_ops->family == AF_INET6 &&
@@ -85,7 +85,7 @@
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
 	struct listen_sock *lopt = icsk->icsk_accept_queue.listen_opt;
-	const u32 h = inet6_synq_hash(&tcp6_rsk(req)->rmt_addr,
+	const u32 h = inet6_synq_hash(&inet6_rsk(req)->rmt_addr,
 				      inet_rsk(req)->rmt_port,
 				      lopt->hash_rnd, lopt->nr_table_entries);