[TWSK]: Introduce struct timewait_sock_ops

So that we can share several timewait sockets related functions and
make the timewait mini sockets infrastructure closer to the request
mini sockets one.

Next changesets will take advantage of this, moving more code out of
TCP and DCCP v4 and v6 to common infrastructure.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 7d3908594fac..a0d04891fe12 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -360,7 +360,8 @@ struct tcp6_timewait_sock {
 
 static inline u16 inet6_tw_offset(const struct proto *prot)
 {
-        return prot->twsk_obj_size - sizeof(struct inet6_timewait_sock);
+        return prot->twsk_prot->twsk_obj_size -
+                        sizeof(struct inet6_timewait_sock);
 }
 
 static inline struct inet6_timewait_sock *inet6_twsk(const struct sock *sk)