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authorJamal Hadi Salim <hadi@cyberus.ca>2010-02-19 02:00:42 +0000
committerDavid S. Miller <davem@davemloft.net>2010-02-19 13:11:50 -0800
commit2f1eb65f366b81aa3c22c31e6e8db26168777ec5 (patch)
tree3c838f5801d0842c586519ddd4d991e22ac3ecd0 /net/key
parent9e64cc9572b43afcbcd2d004538db435f2cd0587 (diff)
downloadlinux-2f1eb65f366b81aa3c22c31e6e8db26168777ec5.tar.gz
xfrm: Flushing empty SPD generates false events
To see the effect make sure you have an empty SPD. On window1 "ip xfrm mon" and on window2 issue "ip xfrm policy flush" You get prompt back in window2 and you see the flush event on window1. With this fix, you still get prompt on window1 but no event on window2. Thanks to Alexey Dobriyan for finding a bug in earlier version when using pfkey to do the flushing. Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/key')
-rw-r--r--net/key/af_key.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c
index c269ce6094d..a20d2fa88db 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2735,8 +2735,11 @@ static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg
audit_info.secid = 0;
err = xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info);
err2 = unicast_flush_resp(sk, hdr);
- if (err || err2)
- return err ? err : err2;
+ if (err || err2) {
+ if (err == -ESRCH) /* empty table - old silent behavior */
+ return 0;
+ return err;
+ }
c.data.type = XFRM_POLICY_TYPE_MAIN;
c.event = XFRM_MSG_FLUSHPOLICY;