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Date:	Tue, 21 Feb 2012 10:58:55 +0800
From:	hayeswang <hayeswang@...ltek.com>
To:	'Francois Romieu' <romieu@...zoreil.com>
CC:	'Eric Dumazet' <eric.dumazet@...il.com>,
	'Nick Bowler' <nbowler@...iptictech.com>,
	<netdev@...r.kernel.org>
Subject: RE: Bogus frames transmitted with r8169 & fragmentation & large mtu

> From: Francois Romieu [mailto:romieu@...zoreil.com] 
> Sent: Thursday, February 16, 2012 8:05 PM
> To: Hayeswang
> Cc: 'Eric Dumazet'; 'Nick Bowler'; netdev@...r.kernel.org
> Subject: Re: Bogus frames transmitted with r8169 & 
> fragmentation & large mtu
> 
> Francois Romieu <romieu@...zoreil.com> :
> [...]
> > I am testing it now.
> 
> It does not fix the problem. It seems to make a difference but I still
> see a few percents packet loss. The pattern has changed a bit 
> too: there
> are more bogus IP fragment offsets.
> 
> Trying with 'ping -qf -c 100 -l 2 -s 65507 10.0.7.1'

It works fine for me. I use Linux platform (Fedora 16 with kernel 3.2.0 with
that patch) with the realtek nic to ping Windows platform with the NVIDIA nic,
and I connect the two PCs directly without the switch. It works well except for
the first packet after I set the new mtu.

> 
> So far I have only seen it with the 2nd and last fragment.
> 
 
Best Regards,
Hayes

Download attachment "ping.log" of type "application/octet-stream" (1237 bytes)

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