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Re: [PATCH 1/2] mac80211: add power management support

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On Thu, Jun 26, 2008 at 9:23 PM, Johannes Berg
<johannes@xxxxxxxxxxxxxxxx> wrote:
> On Thu, 2008-06-26 at 13:55 -0400, John W. Linville wrote:
>> On Thu, Jun 26, 2008 at 07:40:58PM +0200, Samuel Ortiz wrote:
>> > Hi John,
>> >
>> > On Fri, Nov 16, 2007 at 07:53:26PM +0100, Miguel Botón wrote:
>> > > Ok, the previous patch had a little error.
>> > >
>> > > --
>> > >
>> > > This patch adds power management support in mac80211.
>> > Sorry for being late to the game, but would a similar patch against your
>> > -next-2.6 tree be considered for inclusion ?
>>
>> It seems like a reasonable start to me.  Anyone else have comments?
>
> I had one about it returning -EINVAL for all errors that was never
> addressed afaict.

Didn't Yi submitted this one like year ago and rejected?

This is why we have currently implemented in iwlwif sysfs.

/sys/class/net/wlanX/devices/power_level
there are defined 6 power levels
0 - CAM mode (Continuous Aware Mode)
6 - AUTO
1 to 5 levels that specifies power save aggressiveness  empirically developed.
AUTO - depends on system power source/level
system power level is AC or BATTERY  - currently we do not have
anything that tells us whether we run on battery or ac.
Other factor is association state.

This can be expressed as
iwconfig power saving 1..5
iwconfig power off - > CAM mode
iwconfig power auto - this is unfortunately not defined by iwconfig

If this acceptable we can submit the patch

Thanks
Tomas
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