Bug#764162: [PATCH 0/1] mv643xx_eth: Disable TSO by default
- To: Ian Campbell <ijc@hellion.org.uk>
- Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>, netdev@vger.kernel.org, David Miller <davem@davemloft.net>, Thomas Petazzoni <thomas.petazzoni@free-electrons.com>, Gregory Clement <gregory.clement@free-electrons.com>, Tawfik Bayouk <tawfik@marvell.com>, Lior Amsalem <alior@marvell.com>, Nadav Haklai <nadavh@marvell.com>, 764162@bugs.debian.org
- Subject: Bug#764162: [PATCH 0/1] mv643xx_eth: Disable TSO by default
- From: Karl Beldan <karl.beldan@gmail.com>
- Date: Wed, 5 Nov 2014 11:09:53 +0100
- Message-id: <[🔎] 20141105100953.GA29022@magnum.frso.rivierawaves.com>
- Reply-to: Karl Beldan <karl.beldan@gmail.com>, 764162@bugs.debian.org
- In-reply-to: <[🔎] 1415176766.31613.7.camel@hellion.org.uk>
- References: <1414855820-15094-1-git-send-email-ezequiel.garcia@free-electrons.com> <20141104142020.GA6728@magnum.frso.rivierawaves.com> <[🔎] 1415176766.31613.7.camel@hellion.org.uk>
On Wed, Nov 05, 2014 at 08:39:26AM +0000, Ian Campbell wrote:
> On Tue, 2014-11-04 at 15:20 +0100, Karl Beldan wrote:
> > On Sat, Nov 01, 2014 at 12:30:19PM -0300, Ezequiel Garcia wrote:
> > > Several users ([1], [2]) have been reporting data corruption with TSO on
> > > Kirkwood platforms (i.e. using the mv643xx_eth driver).
> > >
> > > Until we manage to find what's causing this, this simple patch will make
> > > the TSO path disabled by default. This patch should be queued for stable,
> > > fixing the TSO feature introduced in v3.16.
> > >
> > > The corruption itself is very easy to reproduce: checking md5sum on a mounted
> > > NFS directory gives a different result each time. Same tests using the mvneta
> > > driver (Armada 370/38x/XP SoC) pass with no issues.
> > >
> > > Frankly, I'm a bit puzzled about this, and so any ideas or debugging hints
> > > are well received.
> > >
> >
> > Hi,
> >
> > Can you try this :
>
> It fixes things for me, thanks!
>
> Tested-by: Ian Campbell <ijc@hellion.org.uk>
>
Good thing, thanks for your feedbak Ian !
Karl
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