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Date:      Fri, 26 Apr 2013 01:51:17 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        lev@freebsd.org
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: New hardware, old problem: stuck beacon when here is WiFi traffic
Message-ID:  <CAJ-VmonCao99MOrm97tQS_f1xS9tieQfg-nQUB4APWVmdJJUBg@mail.gmail.com>
In-Reply-To: <CAJ-VmoktRPbnDRbRuwA4i8w50kExs2pwD4yBawL6iOz7F4Bknw@mail.gmail.com>
References:  <2810538978.20130423164137@serebryakov.spb.ru> <CAJ-Vmom4UDoz7EgdnVeQ%2BALuFFXkH9t_Uj7=FwL77S5rKfUD1g@mail.gmail.com> <1813905823.20130423184528@serebryakov.spb.ru> <CAJ-VmomhRaKODxis09MjAhUbAUOw%2B6jWBY48JpZR_JgfZZLKcQ@mail.gmail.com> <184105677.20130424002002@serebryakov.spb.ru> <CAJ-VmokVmHDXwE7S5koSqtFjPXQ_VUPhj8gfMruDM2k-DyUMPw@mail.gmail.com> <1936997795.20130424003555@serebryakov.spb.ru> <CAJ-Vmokx2QhcjcsgA-_kqjX63Vu4CLk7HkuyALautbnzp61ywQ@mail.gmail.com> <886711115.20130424004702@serebryakov.spb.ru> <CAJ-VmoksSTBC7jmC-_hvBeJFSD0k28HoZodaWdHm0AF0d1yZJg@mail.gmail.com> <6010292503.20130426001447@serebryakov.spb.ru> <CAJ-VmomUsPgHTVGaKHZ_YE%2Bu1ZOjGqrVfh2uYmvOs6gKmhnxOw@mail.gmail.com> <CAJ-VmokZBbmHbruKJV-8kvTyOTsiq5_XHnfqUYo3vO68872Q=w@mail.gmail.com> <99510815.20130426122508@serebryakov.spb.ru> <CAJ-VmoktRPbnDRbRuwA4i8w50kExs2pwD4yBawL6iOz7F4Bknw@mail.gmail.com>

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On 26 April 2013 01:45, Adrian Chadd <adrian@freebsd.org> wrote:
> Hi,
>
> Wait. sysctl dev.ath.0.forcebstuck=1 didn't fix it?

So the descriptors are mostly completed. I really need to hack the
reset path to continue printing everything in the queue, not just the
frames that were completed.

But the TXQ[1] head pointer is pointing to the wrong descriptor. It's
pointing to a descriptor that's finished, whose next descriptor is
also finished. That makes no sense.

I'll have to add some more debugging to -HEAD so to dump out the full
set of TX descriptors in the queue. That hopefully will shed some
light here.



Adrian



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