Re: [RFC PATCH v2 2/2] mac80211: use ps-poll when dynamic power save mode is disabled

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

Johannes Berg <johannes@sipsolutions.net> writes:

> On Thu, 2009-01-22 at 13:45 +0200, Kalle Valo wrote:
>
>> +	printk(KERN_DEBUG "sending ps-poll");
>
> remove one, add another? Or forgot quilt refresh? :)

I have no idea what happened :) I'll fix that.

> If we receive a frame, but don't send any, we'll still stay awake.
> Should receiving update the dynamic timer as well, to avoid that case?
> Here, I mean:
>
>> @@ -1816,9 +1851,24 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
> ...
>> +                       if (local->hw.conf.dynamic_ps_timeout > 0) {
>> +                               local->hw.conf.flags &= ~IEEE80211_CONF_PS;
>> +                               ieee80211_hw_config(local,
>> +                                                   IEEE80211_CONF_CHANGE_PS);
>> +                               ieee80211_send_nullfunc(local, sdata, 0);

You mean case where directed_time is set, dynamic_ps_timeout is zero
and station doesn't transmit anything? That's not a problem because in
that case power save is not disabled at all, ps-poll is sent while
power save mode is enabled. So there won't any problem.

Like I said last week, I need to revisit this case later to get proper
support for other hw designs, eg. broadcom.

-- 
Kalle Valo