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Commit 00501121 authored by Herbert Xu's avatar Herbert Xu Committed by David S. Miller
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[IPSEC]: Add xfrm_input_state helper 



This patch adds the xfrm_input_state helper function which returns the
current xfrm state being processed on the input path given an sk_buff.
This is currently only used by xfrm_input but will be used by ESP upon
asynchronous resumption.

Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 385ac2e3

include/net/xfrm.h

+5 −0
Original line number Diff line number Diff line
@@ -1317,4 +1317,9 @@ static inline void xfrm_states_delete(struct xfrm_state **states, int n) 
}

#endif



static inline struct xfrm_state *xfrm_input_state(struct sk_buff *skb)

{

	return skb->sp->xvec[skb->sp->len - 1];

}



#endif	/* _NET_XFRM_H */

net/xfrm/xfrm_input.c

+1 −1
Original line number Diff line number Diff line
@@ -109,7 +109,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) 
	/* A negative encap_type indicates async resumption. */

	if (encap_type < 0) {

		async = 1;

		x = skb->sp->xvec[skb->sp->len - 1];

		x = xfrm_input_state(skb);

		seq = XFRM_SKB_CB(skb)->seq;

		goto resume;

	}