Re: [PATCH 1/3] cfg80211/nl80211: add support for scheduled scans

[Luciano Coelho <coelho@ti.com>]

On Mon, 2011-05-09 at 10:12 +0200, Johannes Berg wrote:
> On Thu, 2011-05-05 at 16:00 +0300, Luciano Coelho wrote:
> > Implement new functionality for scheduled scan offload.  With this feature we
> > can scan automatically at certain intervals.
> > 
> > The idea is that the hardware can perform scan automatically and filter on
> > desired results without waking up the host unnecessarily.
> > 
> > Add NL80211_CMD_START_SCHED_SCAN and NL80211_CMD_STOP_SCHED_SCAN
> > commands to the nl80211 interface.  When results are available they are
> > reported by NL80211_CMD_SCHED_SCAN_RESULTS events.  The userspace is
> > informed when the scheduled scan has stopped with a
> > NL80211_CMD_SCHED_SCAN_STOPPED event, which can be triggered either by
> > the driver or by a call to NL80211_CMD_STOP_SCHED_SCAN.
> 
> Didn't you initially want to differentiate between SCAN_SSIDS and
> SSIDS_FILTER?

Yes, I'll add SSID filtering soon, as separate patches, if that's okay.
For now, the SSIDs that you can pass via nl80211 are used in the
probe_reqs.

We can also filter on RSSI, SNR and/or group results into one event.
This are other features that our firmware supports.  For now I have not
exposed this, but it could also be added to nl80211 in the future.

-- 
Cheers,
Luca.