From mboxrd@z Thu Jan 1 00:00:00 1970 From: Claudiu Manoil Subject: Re: Fwd: [BUG] Bisected Gianfar not receiving any traffic Date: Mon, 10 Jun 2013 11:29:06 +0300 Message-ID: <51B58E52.1080008@freescale.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Cc: To: Michael Guntsche Return-path: Received: from co1ehsobe006.messaging.microsoft.com ([216.32.180.189]:39647 "EHLO co1outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752456Ab3FJI3V (ORCPT ); Mon, 10 Jun 2013 04:29:21 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: 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 > Date: Sun, Jun 9, 2013 at 10:26 PM > Subject: [BUG] Bisected Gianfar not receiving any traffic > To: linux-netdev@vger.kernel.org > Cc: Claudiu Manoil > > > 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 > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > >