Patrick McHardy wrote:
Then there is this thing with the TCP RST. I think, that the event
data should be accurate. If the status is returned (with patch 1),
then it should have the SEEN_REPLY flag set. Another issue is that the
accounting counters are not updated. IMHO this should be done as well
(is not in my patches).
Fully agreed about the counters. About the SEEN_REPLY bit - that
depends on how you define its meaning. So far its only set if
a valid reply for the connection is seen - which a RST isn't.
I consider a RST as a valid reply for a connection. It matches the tuple
and is in reply direction (ctinfo is set to IS_REPLY). Further the TCP
protocol handler returns no error. The SEEN_REPLY bit is actually set at
the end of nf_conntrack_in() but the destroy event is already triggered
by the TCP handler.
Increasing the counters in reply direction without setting the
SEEN_REPLY bit seems a bit weird to me.
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