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xfrm: Flushing empty SAD generates false events

Browse source 
To see the effect make sure you have an empty SAD.
-On window1 "ip xfrm mon"
-on window2 issue "ip xfrm state flush"
You get prompt back in window1
and you see the flush event on window2.
With this fix, you still get prompt on window1 but no
event on window2.

I was tempted to return -ESRCH on window1 (which would
show "RTNETLINK answers: No such process") but didnt want
to change current behavior.

cheers,
jamal
commit 5f3dd4a772326166e1bcf54acc2391df00dc7ab5
Author: Jamal Hadi Salim <[email protected]>
Date:   Thu Feb 11 04:41:36 2010 -0500

    xfrm: Flushing empty SAD generates false events

    To see the effect make sure you have an empty SAD.
    On window1 "ip xfrm mon" and on window2 issue "ip xfrm state flush"
    You get prompt back in window1 and you see the flush event on window2.
    With this fix, you still get prompt on window1 but no event on window2.

    Signed-off-by: Jamal Hadi Salim <[email protected]>

Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
jamal 2010-02-10 23:51:27 +00:00 • committed by David S. Miller
commit 19f4c7133f
3 changed files with 8 additions and 4 deletions
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2
net/key/af_key.c
View file

@ -1751,7 +1751,7 @@ static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hd
audit_info.secid = 0;
err = xfrm_state_flush(net, proto, &audit_info);
if (err)
return err;
return 0;
c.data.proto = proto;
c.seq = hdr->sadb_msg_seq;
c.pid = hdr->sadb_msg_pid;