From afeb14b49098ba7a51c96e083a4105a0301f94c4 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Fri, 21 Dec 2007 14:58:11 -0800 Subject: [XFRM]: RFC4303 compliant auditing This patch adds a number of new IPsec audit events to meet the auditing requirements of RFC4303. This includes audit hooks for the following events: * Could not find a valid SA [sections 2.1, 3.4.2] . xfrm_audit_state_notfound() . xfrm_audit_state_notfound_simple() * Sequence number overflow [section 3.3.3] . xfrm_audit_state_replay_overflow() * Replayed packet [section 3.4.3] . xfrm_audit_state_replay() * Integrity check failure [sections 3.4.4.1, 3.4.4.2] . xfrm_audit_state_icvfail() While RFC4304 deals only with ESP most of the changes in this patch apply to IPsec in general, i.e. both AH and ESP. The one case, integrity check failure, where ESP specific code had to be modified the same was done to the AH code for the sake of consistency. Signed-off-by: Paul Moore Acked-by: James Morris Signed-off-by: David S. Miller --- net/xfrm/xfrm_output.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'net/xfrm/xfrm_output.c') diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c index 867484a046a..09514449fe8 100644 --- a/net/xfrm/xfrm_output.c +++ b/net/xfrm/xfrm_output.c @@ -57,6 +57,8 @@ static int xfrm_output_one(struct sk_buff *skb, int err) if (x->type->flags & XFRM_TYPE_REPLAY_PROT) { XFRM_SKB_CB(skb)->seq = ++x->replay.oseq; + if (unlikely(x->replay.oseq == 0)) + xfrm_audit_state_replay_overflow(x, skb); if (xfrm_aevent_is_on()) xfrm_replay_notify(x, XFRM_REPLAY_UPDATE); } -- cgit v1.2.3