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wlan power managment

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Hallo all,

i currently was busy with some wlan/VoIP issue, and collected some
questions/issues to you.

I know powertop give warning about some wlan settings like beacon
frequency and legacy power save, which use only PS-poll. But it is not
enough.

Newest AP can do more power saving for client, for example APSD
(scheduled and unscheduled). I think this need more advance tool than
powertop. Are any tool which can do fallowing:
It should check if associated AP support APSD (capability 5. bit). If
driver can work with it (all mac80211 based should do?). Statistic about
packets send S-APSD or U-APSD mode. QoS statistic and/or PID sending
packets with QoS markers (base, background, video, audio priority). We
should be able to find if VoIP fail because it use wrong QoS strategy or
AP or driver.

I think some/all of them are realistic but kernel is not ready for it?
Or kernel is ready but no tools? 

-- 
Regards,
        Alexey

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