From: Wojciech Dubowik <Wojciech.Dubowik@neratec.com>
To: Kalle Valo <kvalo@adurom.com>
Cc: Johannes Berg <johannes@sipsolutions.net>,
linux-wireless@vger.kernel.org
Subject: Re: [BUG] Beacon loss event every second
Date: Tue, 12 Feb 2013 11:13:40 +0100 [thread overview]
Message-ID: <511A15D4.6070808@neratec.com> (raw)
In-Reply-To: <87bobpc0ft.fsf@purkki.adurom.net>
On 02/12/2013 11:04 AM, Kalle Valo wrote:
> Wojciech Dubowik <Wojciech.Dubowik@neratec.com> writes:
>
>> I have connection without sending any data.
>>
>> I have seen that ieee80211_sta_rx_notify doesn't count beacons
>> so the time is not resetted. What was the reason not to count them
>> for beacon loss work? Something connected with PS?
>>
>> Anyway I should get the event every
>>
>> IEEE80211_BEACON_LOSS_COUNT * bcn period
>>
>> which in my case should be 7 * 30 ms = 210 ms and not 1 second.
>>
>> I will keep on digging.
> What driver are you using?
>
I have a test pc with 3x AR9590 and 2x AR9390. Machine is based on i7
and hyperthreading is on so I have 8 cores.
I am using latest wireless testing ath9k and 3.8rc7 kernel.
What I see is that for some extended periods odf time beacons are not
processed in ieee80211_rx_mgmt_beacon
and that's why I get beacon loss. I am using 30ms beacon period.
What is really funny, that I get this beacon loss message every second.
Like is sth was locking ifmgd->mtx mutex
at constant intervals.
I will try to disable all cores and run in again to see if it's rcu problem.
Wojtek
next prev parent reply other threads:[~2013-02-12 10:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-11 13:47 [BUG] Beacon loss event every second Wojciech Dubowik
2013-02-11 14:27 ` Johannes Berg
2013-02-11 14:42 ` Wojciech Dubowik
2013-02-12 10:04 ` Kalle Valo
2013-02-12 10:13 ` Wojciech Dubowik [this message]
2013-02-12 10:23 ` Kalle Valo
2013-02-12 10:24 ` Wojciech Dubowik
2013-02-12 10:46 ` Wojciech Dubowik
2013-02-13 12:45 ` Wojciech Dubowik
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