[IPV6]: Move nextheader offset to the IP6CB

Move nextheader offset to the IP6CB to make it possible to pass a
packet to ip6_input_finish multiple times and have it skip already
parsed headers. As a nice side effect this gets rid of the manual
hopopts skipping in ip6_input_finish.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 93bbed5c6cf4..5cfc71529595 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -191,6 +191,7 @@ struct inet6_skb_parm {
         __u16                   srcrt;
         __u16                   dst1;
         __u16                   lastopt;
+        __u32                   nhoff;
 };
 
 #define IP6CB(skb)      ((struct inet6_skb_parm*)((skb)->cb))