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[IPSEC]: Remove nhoff from xfrm_input

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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>
This commit is contained in:
Herbert Xu 2007-11-19 18:47:58 -08:00 • committed by David S. Miller
commit 60d5fcfb19
8 changed files with 16 additions and 15 deletions
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1
include/net/xfrm.h
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@ -534,7 +534,6 @@ struct xfrm_spi_skb_cb {
struct inet6_skb_parm h6;
} header;
unsigned int nhoff;
unsigned int daddroff;
};