netdev - Re: scp stalls mysteriously

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Message-ID: <20091203085933.GD30730@sd-11162.dedibox.fr>
Date:	Thu, 3 Dec 2009 09:59:33 +0100
From:	Frederic Leroy <fredo@...rox.org>
To:	Damian Lukowski <damian@....rwth-aachen.de>
Cc:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	Netdev <netdev@...r.kernel.org>, Asdo <asdo@...ftmail.org>,
	David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: Re: scp stalls mysteriously

On Wed, Dec 02, 2009 at 08:17:44PM +0100, Damian Lukowski wrote:
> could you please printk retrans_stamp just before the return in 
> include/net/tcp.h:retransmits_timed_out()?
> If the value is not monotonically increasing but is reset to 0 at some
> point, this might lead to problems in tcp_write_timeout().
> It's the only idea I have now.

Your idea is good.
Only one out of 4 value is not null.

Logs corresponding on http://wwW.starox.org/pub/scp_stall is .10

I make 2 attempts. Printk corresponding to .10 are those after the line 
"wlan1 enter promiscuous mode"

-- 
Frédéric Leroy
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