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Date:	Mon, 10 Jun 2013 10:33:46 +0200
From:	Michael Guntsche <michael.guntsche@...loops.com>
To:	Claudiu Manoil <claudiu.manoil@...escale.com>
Cc:	netdev@...r.kernel.org
Subject: Re: Fwd: [BUG] Bisected Gianfar not receiving any traffic

Hello Claudiu,

The Board in question is a Mikrotik Routerboard RB600A, which is using
a MPC8343E.

/Michael

On Mon, Jun 10, 2013 at 10:29 AM, Claudiu Manoil
<claudiu.manoil@...escale.com> wrote:
> Hello,
>
> Please provide the model of your board. Commit 6be5ed3fef568
> relies on correct indication from H/W for Rx processing, so we
> should check whether the right register/mask are being used for
> that model or whether there's a missing errata.
> One way to confirm this is by checking if Rx processing (and not Tx)
> is entered with num_act_queues == 0 (the RXF indication set to 0).
>
> Thanks,
> Claudiu
>
>
> On 6/9/2013 11:28 PM, Michael Guntsche wrote:
>>
>> Forwarded to the correct mailing list address.
>>
>>
>> ---------- Forwarded message ----------
>> From: Michael Guntsche <michael.guntsche@...loops.com>
>> Date: Sun, Jun 9, 2013 at 10:26 PM
>> Subject: [BUG] Bisected Gianfar not receiving any traffic
>> To: linux-netdev@...r.kernel.org
>> Cc: Claudiu Manoil <claudiu.manoil@...escale.com>
>>
>>
>> Good evening,
>>
>> While testing one of my powerpc based embedded ports I noticed that
>> with any 3.10-rc kernel ethernet traffic was dead on my two gianfar
>> NICs. The strange thing was that apparetnly outbound broadcasts seemed
>> to work since avahi correctly registered the name of the board. I
>> bisected it to the following commit.
>>
>> 6be5ed3fef568 gianfar: Poll only active Rx queues
>>
>> Reverting this commit on 3.10-rc4 made both gianfar devices work
>> again. This is a rather old board so it could be that the register
>> that's used here is just plain wrong in my case. A few years ago I had
>> a similar issue where the implementation on the board here apparently
>> did not work correctly.
>>
>> http://marc.info/?l=linux-netdev&m=131297524825104&w=2
>>
>> In that case a flag was bogus as well.
>> If you need more information or want me to test a patch please add me
>> as CC since I am not subscribed to the list.
>>
>> Kind regards,
>> Michael Guntsche
>> --
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>>
>
>
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