netdev - Re: why does tcp_v[46]_conn_request not inc MIB stats

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Message-Id: <20070914.201152.35026256.davem@davemloft.net>
Date:	Fri, 14 Sep 2007 20:11:52 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	sri@...ibm.com
Cc:	rick.jones2@...com, netdev@...r.kernel.org
Subject: Re: why does tcp_v[46]_conn_request not inc MIB stats

From: Sridhar Samudrala <sri@...ibm.com>
Date: Mon, 10 Sep 2007 14:54:43 -0700

> looks like it is a hole in the stats. I think we should increment
> LISTENOVERFLOWS or LISTENDROPS in tcp_v[46]_conn_request too if the
> SYN is dropped.

No we should not.

This is limiting embryonic mini-socket creation.  The listen overflow
should only increment when the 3-way handshake completion is aborted
because the listening socket limit is exceeded, which is entirely
different from the embryonic limit.
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