netdev - TCP and reordering

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Message-ID: <CAAeewD8zsfb6QPFecvPab_oK3D3T7eG_M53MVvfJ2QrxUFxWSQ@mail.gmail.com>
Date:	Tue, 27 Nov 2012 11:32:35 +0200
From:	Saku Ytti <saku@...i.fi>
To:	netdev@...r.kernel.org
Subject: TCP and reordering

Today due to fast retransmit performance on links which cause
reordering is appalling.

Is it too esoteric situation to handle gracefully? Couldn't we
maintain 'reorder' counter in socket, which is increment when we get
two copies of same packet after duplicate ack, if this counter is
sufficiently high in relation to packet loss, we could start delaying
duplicate acks as we'd expect to receive the sequence very soon.

--
  ++ytti
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