Re: BBB (cpsw(4)) seems to be broken in the latest 11-current

From: Maxim Sobolev <sobomax_at_freebsd.org>
Date: Mon, 20 Jun 2016 15:49:49 -0700
Nice to hear. I am building it right now. Gotta get you some results in the
next few hours. Thanks!

-Max

On Mon, Jun 20, 2016 at 3:33 PM, Keith White <kwhite_at_site.uottawa.ca> wrote:

> On Mon, 20 Jun 2016, Luiz Otavio O Souza wrote:
>
> On Sun, Jun 19, 2016 at 1:11 AM, Maxim Sobolev wrote:
>>
>>> Jim, some update from here. Running r283287 of the driver, I still see
>>> the
>>> same "watchdog timeout" messages, but they do not lead to the interface
>>> lockout. The traffic resumes momentarily. Which is probably why I never
>>> paid
>>> much attention to those warnings before. Therefore, I suspect that the
>>> new
>>> MAC code does not deal with watchdog-triggered interface reset as good as
>>> the old code. Does it give you any ideas about what could be wrong there
>>> by
>>> any chance?
>>>
>>
>>
>> Hi Maxim,
>>
>> My recent changes contributed somehow to expose the bug more frequently.
>>
>> There was a condition in tx packet reclamation where we aren't
>> restarting the tx queue in one of the possible stall conditions.
>>
>> Please try the attached patch and let me know if it works for you.
>>
>> Luiz
>>
>
> Your patch fixes the problem for me.  Thanks!
>
> FreeBSD beaglebone 11.0-ALPHA4 FreeBSD 11.0-ALPHA4 #0 r302028M: Mon Jun 20
> 18:19:55 EDT 2016     kwhite_at_freebsd11:/usr/obj/arm.armv6/usr/src/sys/BEAGLEBONE-LOCAL
> arm armv6
>
> ...keith
>
Received on Mon Jun 20 2016 - 20:49:51 UTC

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