netdev - Re: [PATCH] r8169: revert "add byte queue limit support".

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Date:	Fri, 27 Jul 2012 07:27:48 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Stefan Lippers-Hollmann <s.L-H@....de>
Cc:	Francois Romieu <romieu@...zoreil.com>,
	David Miller <davem@...emloft.net>, hayeswang@...ltek.com,
	netdev@...r.kernel.org,
	Alex Villacís Lasso 
	<a_villacis@...osanto.com>, Josh Boyer <jwboyer@...hat.com>,
	Tom Herbert <therbert@...gle.com>
Subject: Re: [PATCH] r8169: revert "add byte queue limit support".

On Fri, 2012-07-27 at 05:36 +0200, Stefan Lippers-Hollmann wrote:
> Hi
> 
> On Tuesday 24 July 2012, Francois Romieu wrote:
> > Eric Dumazet <eric.dumazet@...il.com> :
> > > On Mon, 2012-07-23 at 22:55 +0200, Francois Romieu wrote:
> > > > This reverts commit 036dafa28da1e2565a8529de2ae663c37b7a0060.
> > [...]
> > > bisection is not always the right way to qualify a problem.
> > 
> > I know. At some point I switch from "I could search more" to "users situation
> > will improve in a definite timeframe".
> > 
> > > BQL in itself had some fixes coming _after_ commit 036dafa28da1e2565
> > 
> > Thanks.
> > 
> > They are in stable as of 3.4.5:
> […]
> > I have obviously not directed users at them and I do not see any
> > of the victims using a non -stable / -vendor or recent enough
> > kernel to test this patch since the issue has been reported.
> > 
> > They are both worth testing.
> […]
> 
> 3.4.x up to and including 3.4.4 exposed the problem on these cards[1]:
> 
> r8169 0000:04:00.0: eth0: RTL8168d/8111d at 0xffffc90000c72000, 00:24:1d:72:7c:75, XID 081000c0 IRQ 44
> r8169 0000:05:00.0: eth1: RTL8168d/8111d at 0xffffc90000c70000, 00:24:1d:72:7c:77, XID 081000c0 IRQ 45
> 
> while it is stable with "add byte queue limit support" reverted; 3.4.5+
> was only tested with 036dafa28da1e2565a8529de2ae663c37b7a0060 reverted.
> 
> Now testing plain 3.5.0, which still includes it, has been reliable for
> almost 3 days - while the issue usually triggered within one hour (3 
> hours at most) in 3.4.[0-4]. It might be a little too early to give a
> definitive answer, but so far r8169/ 3.5.0 looks positive.
> 
> Regards
> 	Stefan Lippers-Hollmann
> 
> [1]	Message-Id: <201206290131.49150.s.L-H@....de>
> 	http://lkml.kernel.org/r/<201206290131.49150.s.L-H@....de>

Thats real good news, thanks !


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