netdev - Re: 2.6.27.8 (+the idr fix) TCP Ack issue

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Message-ID: <20090102084335.GA24513@gondor.apana.org.au>
Date:	Fri, 2 Jan 2009 19:43:35 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Russell King <rmk@....linux.org.uk>
Cc:	netdev@...r.kernel.org, Ben Hutchings <bhutchings@...arflare.com>
Subject: Re: 2.6.27.8 (+the idr fix) TCP Ack issue

On Tue, Dec 30, 2008 at 07:58:58PM +0000, Russell King wrote:
>
> 19:47:32.174701 IP dyn-67.arm.linux.org.uk.38803 > 193.108.74.209.http: . 644:3196(2552) ack 1190 win 8323

You are to be using TSO/GSO, what driver are you using and what
does ethtool -k <ifname> say? You could try disabling TSO to see
if the problem goes away with ethtool -K ifname tso off.

If you could please take a dump one hop away from your host to
see the segmented packets.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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