xfrm: Revert false event eliding commits.

As reported by Alexey Dobriyan:

--------------------
setkey now takes several seconds to run this simple script
and it spits "recv: Resource temporarily unavailable" messages.

#!/usr/sbin/setkey -f
flush;
spdflush;

add A B ipcomp 44 -m tunnel -C deflate;
add B A ipcomp 45 -m tunnel -C deflate;

spdadd A B any -P in ipsec
        ipcomp/tunnel/192.168.1.2-192.168.1.3/use;
spdadd B A any -P out ipsec
        ipcomp/tunnel/192.168.1.3-192.168.1.2/use;
--------------------

Obviously applications want the events even when the table
is empty.  So we cannot make this behavioral change.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/key/af_key.c b/net/key/af_key.c
index 8b8e26a9e401..79d2c0f3c334 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -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 0;
+                return err;
         c.data.proto = proto;
         c.seq = hdr->sadb_msg_seq;
         c.pid = hdr->sadb_msg_pid;
@@ -2713,7 +2713,7 @@ 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);
         if (err)
-                return 0;
+                return err;
         c.data.type = XFRM_POLICY_TYPE_MAIN;
         c.event = XFRM_MSG_FLUSHPOLICY;
         c.pid = hdr->sadb_msg_pid;