From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erwin Rol Subject: Re: at91sam9260 MACB problem with IP fragmentation Date: Thu, 06 Dec 2012 16:15:32 +0100 Message-ID: <50C0B694.60408@erwinrol.com> References: <50C08233.9030905@erwinrol.com> <50C09D2E.8050608@atmel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Havard Skinnemoen , linux-arm-kernel , matteo.fortini@sadel.it, netdev To: Nicolas Ferre Return-path: In-Reply-To: <50C09D2E.8050608@atmel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hey Nicolas, On 6-12-2012 14:27, Nicolas Ferre wrote: > Erwin, > > On 12/06/2012 12:32 PM, Erwin Rol : >> Hello Nicolas, Havard, all, >> >> I have a very obscure problem with a at91sam9260 board (almost 1 to 1 >> copy of the Atmel EK). >> >> >> > [..] > > It seems that Matteo has the same behavior: check here: > http://www.spinics.net/lists/netdev/msg218951.html The difference seems to be that in Matteo's case the receiving stalls. In my case it is the sending that stalls. I see the UDP datagram in userspace and the sendto call also returns without error, but the data does not end up on the network (until the next packet is send) > I am working on the macb driver right now, so I will try to reproduce > and track this issue on my side. That would be really great, and thank you for the quick reply. If you have anything that I should try or test on my hardware just let me know. BTW: A quick check on a at91sam9263 board did not show the problem. I will try to verify if it really does work on a 9263, cause maybe it just more rare on a 9263. - Erwin