CFG80211 support in wpa_supplicant

[Dan Williams]

On Fri, 2010-01-15 at 11:25 +0100, Holger Schurig wrote:
> > Also NM doesn't show proper signal levels. I also created more 
> or less a hack to make it work:
> 
> > +       if (max_qual->updated & IW_QUAL_DBM)
> 
> 
> That looks like NM's signal level is still based on WEXT, 
> IW_QUAL_xxx looks like a wext identifier.
> 
> On my device I use a self-written app that get's the signal/noise 
> via nl80211 (like the "iw" tool), and then it works pretty nice.

Yeah, NM's signal quality code hasn't been touched in quite a while.
I'd appreciate suggestions for fixing it up...  Given that mac80211
drivers will now only return level, and I believe only in dBm, and often
without a noise floor, what should the calculation look like?

Dan