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authorPaul Moore <paul.moore@hp.com>2007-12-22 01:58:11 +0300
committerDavid S. Miller <davem@davemloft.net>2008-01-29 02:00:01 +0300
commitafeb14b49098ba7a51c96e083a4105a0301f94c4 (patch)
tree2675451596adbea8aa261704c356d074136abbbd /net/xfrm/xfrm_output.c
parentdfd4f0ae2e111e2b93c295938c0e64ebbb69ae6e (diff)
downloadlinux-afeb14b49098ba7a51c96e083a4105a0301f94c4.tar.xz
[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 <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/xfrm_output.c')
-rw-r--r--net/xfrm/xfrm_output.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 867484a046af..09514449fe8a 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);
}