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From: Kalle Valo <kvalo@qca.qualcomm.com>
To: Avery Pennarun <apenwarr@gmail.com>
Cc: ath10k <ath10k@lists.infradead.org>
Subject: Re: After shutdown/restart, ath10k sometimes stops receiving packets
Date: Mon, 16 Jun 2014 12:30:07 +0300	[thread overview]
Message-ID: <87bntt2odc.fsf@kamboji.qca.qualcomm.com> (raw)
In-Reply-To: <CAHqTa-32qgA7y6-+FKV117gGGqY7LO+=vjB4wURh31NP+cV2cg@mail.gmail.com> (Avery Pennarun's message of "Sun, 15 Jun 2014 02:49:25 -0400")

Avery Pennarun <apenwarr@gmail.com> writes:

> On Sun, Jun 15, 2014 at 1:45 AM, Kalle Valo <kvalo@qca.qualcomm.com> wrote:
>> Avery Pennarun <apenwarr@gmail.com> writes:
>>> Someone in our QA group seems to be able to produce it after two or
>>> three test runs with Veriwave.  Before each run, he stops and restarts
>>> hostapd.
>>
>> That's quite often. Was he testing DFS or something else? Maybe this is
>> related to radar detection or channel switching?
>
> He's not using DFS channels.

Good, so we can rule out that.

> This is supposedly just a simple throughput test. (Although I've
> noticed in the past that the Veriwave sometimes produces odd sequences
> of packets.)

Yeah, these kind of test equipments can behave different than normal
802.11 devices. For example, I remember one very expensive test box was
acting as an AP and it just ignored PM bit from the clients. No wonder
the packet loss was high :)

In this case it might that the way Veriwave behaves so which makes it
easy to reproduce the bug. And that's a good thing.

Any chance you could get full trace-cmd logs (ath10k, mac80211, cfg80211
and hostapd) when the bug fails with Veriwave? I'm sure that would get
more hints what's happening.

-- 
Kalle Valo

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  reply	other threads:[~2014-06-16  9:30 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-12 23:37 After shutdown/restart, ath10k sometimes stops receiving packets Avery Pennarun
2014-06-13  9:14 ` Michal Kazior
2014-06-13  9:37   ` Avery Pennarun
2014-06-13  9:49     ` Michal Kazior
2014-06-13 11:00       ` Michal Kazior
2014-06-14 16:45 ` Kalle Valo
2014-06-14 18:40   ` Avery Pennarun
2014-06-15  5:45     ` Kalle Valo
2014-06-15  6:49       ` Avery Pennarun
2014-06-16  9:30         ` Kalle Valo [this message]
2014-06-15 16:13       ` Ben Greear

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