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Date: Fri, 05 Oct 2001 16:11:05 -0700 (PDT)
Message-Id: <20011005.161105.78709492.davem@redhat.com>
To: cwidmer@iiic.ethz.ch
Cc: linux-kernel@vger.kernel.org
Subject: Re: unnecessary retransmit from network stack
From: "David S. Miller" <davem@redhat.com>
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   From: Christian Widmer <cwidmer@iiic.ethz.ch>
   Date: Fri, 5 Oct 2001 14:29:53 +0200

   why does net_dev.hard_start_xmit get called multiple times 
   with the same tcp packet?  
   
Because the ACK is not coming back for those packets within the RTO
(which for a local network is very low).  Check your TCP dumps,
the ACKs of the original data packets are being dropped in transit.

Franks a lot,
David S. Miller
davem@redhat.com
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