[IPSEC]: Remove nhoff from xfrm_input

The nhoff field isn't actually necessary in xfrm_input.  For tunnel
mode transforms we now throw away the output IP header so it makes no
sense to fill in the nexthdr field.  For transport mode we can now let
the function transport_finish do the setting and it knows where the
nexthdr field is.

The only other thing that needs the nexthdr field to be set is the
header extraction code.  However, we can simply move the protocol
extraction out of the generic header extraction.

We want to minimise the amount of info we have to carry around between
transforms as this simplifies the resumption process for async crypto.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 311bbd1..cf85dc9 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -534,7 +534,6 @@ struct xfrm_spi_skb_cb {
 		struct inet6_skb_parm h6;
 	} header;
 
-	unsigned int nhoff;
 	unsigned int daddroff;
 };