Re: [PATCH] mac80211: add a function for setting the TIM bit for a specific station

[Johannes Berg <johannes@sipsolutions.net>]

On Mon, 2011-04-18 at 11:11 +0200, Felix Fietkau wrote:

> > The only question I have is how will PS-Poll be handled while an
> > aggregation session is active?? Is it even allowed to poll a-MPDUs?

> Not sure - polling A-MPDUs may not be allowed, the standard only 
> mentions polling MSDU and A-MSDU. We could add a driver callback later 
> that mac80211 calls upon receiving a PS-Poll when WLAN_STA_PS_DRIVER_BUF 
> is set, which will trigger the release of a single packet and indicate 
> in the return status whether it was the last one (from the driver's 
> point of view).

Yeah I just looked at it too -- seems not allowed, and I don't even see
a way to implement it. I suppose for any long-term sleep (rather than
for things like scanning) the aggregation sessions should just be torn
down.

johannes