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Date: Mon, 19 Sep 2016 10:33:38 +0200
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To: Loganaden Velvindron <loganaden@gmail.com>
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Subject: Re: [Make-wifi-fast] crypto-fq bug postmortem is up
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X-List-Received-Date: Mon, 19 Sep 2016 08:33:41 -0000

Hi Loganaden, hi Toke,

> On Sep 19, 2016, at 05:56 , Loganaden Velvindron <loganaden@gmail.com> =
wrote:
>=20
> On Mon, Sep 19, 2016 at 12:50 AM, Sebastian Moeller <moeller0@gmx.de> =
wrote:
>>=20
>> Hi Loganaden,
>>=20
>> this sounds somewhat familiar to me (see
>> https://bugs.lede-project.org/index.php?do=3Ddetails&task_id=3D176 ). =
At least
>> the symptoms are similar and so is the temporary remedy (calling wifi =
on the
>> CLI). Are you using LEDE firmwares as well? In my case it seems bad =
radio
>> conditions help expose the issue somewhat easier... My current idea =
is that
>> r1482 (commit    372d0fea29e60b02154fd7176ba32e7742f6640e, ' ath9k: =
add a
>> bunch of powersave handling fixes') somehow introduced a new or =
exposed an
>> old and hidden bug for the atheros radios, r1483 (commit
>> a894a535ff7e6c37bd853e951663130482bc0ff2, 'mac80211: add fixes for =
dealing
>> with unexpected BlockAck frames') might either have introduced an =
easier way
>> to trigger the offensive conditions, but that is conjecture...
>>=20
>=20
> I'm using this firmware:
>=20
> =
https://kau.toke.dk/lede/airtime-fairness-builds/ar71xx/generic/lede-r1526=
%2B2-ar71xx-generic-archer-c7-v2-squashfs-factory.bin


Since this is based on LEDE r1526 it should contain the suspect commits =
372d0fea29e60b02154fd7176ba32e7742f6640e and =
a894a535ff7e6c37bd853e951663130482bc0ff2, so this might be the exact =
same issue. I seem to be able to force this issue with moving from area =
of good reception to an area of bad reception (yeah for living in an old =
house with massive brich walls), maybe that cild work for you as well? I =
am not sure whether the issue is regarded by the LEDE developers as very =
critical yet (and rightfully so IMHO, there are only a few reports), so =
any added report might turn this more into the development spot light=E2=80=
=A6

Best Regards
	Sebastian