[INET_TIMEWAIT_SOCK]: Reorganize struct inet_timewait_sock to save some bytes

/home/acme/git/net-2.6/net/ipv6/tcp_ipv6.c:
  struct inet_timewait_sock |   -8
  struct tcp_timewait_sock  |   -8
 2 structs changed
  tcp_v6_rcv                |   -6
 1 function changed, 6 bytes removed, diff: -6
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/inet_timewait_sock.h

@@ -116,6 +116,7 @@ struct inet_timewait_sock {
 #define tw_hash			__tw_common.skc_hash
 #define tw_prot			__tw_common.skc_prot
 #define tw_net			__tw_common.skc_net
+	int			tw_timeout;
 	volatile unsigned char	tw_substate;
 	/* 3 bits hole, try to pack */
 	unsigned char		tw_rcv_wscale;
@@ -130,7 +131,6 @@ struct inet_timewait_sock {
 	__u8			tw_ipv6only:1;
 	/* 15 bits hole, try to pack */
 	__u16			tw_ipv6_offset;
-	int			tw_timeout;
 	unsigned long		tw_ttd;
 	struct inet_bind_bucket	*tw_tb;
 	struct hlist_node	tw_death_node;