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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2011-03-08 00:09:51 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-03-13 20:22:31 -0700 |
| commit | 2cd084678fc1eb75aec4f7ae3d339d232c00ec61 (patch) | |
| tree | ac6413e56d1189f57bb0f84920dfa3257a11d3d2 /net/xfrm/xfrm_input.c | |
| parent | 97e15c3a8504ea39a209778d7dcdbdf440404a91 (diff) | |
| download | linux-2cd084678fc1eb75aec4f7ae3d339d232c00ec61.tar.gz linux-2cd084678fc1eb75aec4f7ae3d339d232c00ec61.tar.bz2 linux-2cd084678fc1eb75aec4f7ae3d339d232c00ec61.zip | |
xfrm: Add support for IPsec extended sequence numbers
This patch adds support for IPsec extended sequence numbers (esn)
as defined in RFC 4303. The bits to manage the anti-replay window
are based on a patch from Alex Badea.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/xfrm_input.c')
| -rw-r--r-- | net/xfrm/xfrm_input.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c index 55d5f5c3d119..872065ca7f8c 100644 --- a/net/xfrm/xfrm_input.c +++ b/net/xfrm/xfrm_input.c @@ -107,6 +107,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) struct net *net = dev_net(skb->dev); int err; __be32 seq; + __be32 seq_hi; struct xfrm_state *x; xfrm_address_t *daddr; struct xfrm_mode *inner_mode; @@ -184,7 +185,10 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) spin_unlock(&x->lock); + seq_hi = htonl(xfrm_replay_seqhi(x, seq)); + XFRM_SKB_CB(skb)->seq.input.low = seq; + XFRM_SKB_CB(skb)->seq.input.hi = seq_hi; nexthdr = x->type->input(x, skb); |