From: Gabriel Beddingfield <gabrbedd@gmail.com>
To: netdev@vger.kernel.org
Subject: Re: Miscalculated TCP ACK ?
Date: Mon, 22 Aug 2011 19:41:45 -0500 [thread overview]
Message-ID: <4E52F749.4000204@gmail.com> (raw)
In-Reply-To: <1314038973.3777.0.camel@edumazet-laptop>
On 08/22/2011 01:49 PM, Eric Dumazet wrote:
> Le lundi 22 août 2011 à 13:05 -0500, Gabriel Beddingfield a écrit :
>> On Mon, Aug 22, 2011 at 12:19 PM, Daniel Baluta<daniel.baluta@gmail.com> wrote:
>>>>> It appears to me that the ACK is off-by-one (should have been 27676).
>>>>> The server replies again with retransmissions. This is with several
>>>>> kernel versions on local machines, ranging from 2.6.31 to 2.6.38.
>>>
>>>> Not a bug if frame carried a FIN
>>
>> The server packet had the FIN bit set.
>>
>
> then its fine.
Thank you!
>> I clipped the conversation to the vicinity of the problem.
>
> This sounds as a TSO bug, maybe driver/NIC related
>
> What is the NIC/driver used on your server ?
New news: If I remove my router (Linksys WRTU54G-TM), the problem goes
away.
Thank you guys for your helpful insights. :-)
-gabriel
next prev parent reply other threads:[~2011-08-23 0:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 15:34 Miscalculated TCP ACK ? Gabriel Beddingfield
2011-08-22 16:38 ` Eric Dumazet
2011-08-22 17:19 ` Daniel Baluta
2011-08-22 18:05 ` Gabriel Beddingfield
2011-08-22 18:49 ` Eric Dumazet
2011-08-23 0:41 ` Gabriel Beddingfield [this message]
2011-08-22 17:58 ` Hagen Paul Pfeifer
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