Re: [PATCH v6 3/3] mac80211: implement dynamic power save

[Kalle Valo <kalle.valo@nokia.com>]

Vivek Natarajan <vivek.natraj@gmail.com> writes:

> I need your thoughts on having null frame being sent from mac80211(
> the RFC I submitted earlier). Do you feel a state machine is
> necessary to go to power save? ( like awake, sleep, pending_sleep if
> the AP hasn't acked the null frame with a timer or a work queue to
> send null frame periodically in the pending state).

I haven't thinked much about this yet, but your proposal of having a
state machine most probably is the best option. It's just that earlier
Johannes mentioned that it's not currently possible to know if null
frame has been acked:

http://www.spinics.net/lists/linux-wireless/msg21212.html

We would have to solve that before implementing the state machine.

> Or altogether you want that to be part of the driver and not in
> mac80211?

I think this needs to be in mac80211 because there are three drivers
which need it (p54/stlc45xx, ath5/9k and b43).

-- 
Kalle Valo