Re: [RFC] mac80211: notify the user space about low signal quality

[Helmut Schaa <hschaa@suse.de>]

Am Dienstag, 16. September 2008 03:21:17 schrieb Luis R. Rodriguez:
> On Mon, Sep 15, 2008 at 9:45 AM, Helmut Schaa <hschaa@suse.de> wrote:
> > Ok, I'll sum that up. Moving the policy into user space is a good thing
> > if the quality values are comparable. Once mac80211 recognices a
> > noticable quality change we could use IWEVQUAL to notify user space about
> > it. Furthermore (if desired) the signal could be extended to not only
> > report a value between 0 and 100 but could also contain flags indicating
> > lost beacons, excessive retries etc.
>
> If you are going to add a new sort of notification can you please use
> nl80211? No need to keep wireless extensions on life support.

Sure. Nevertheless I'd like to use the already existing IWEVQUAL (without 
modifications) too. Hence the supplicant's wext-driver could use the plain 
quality value to decide when it is time to trigger a scan while the 
nl80211-driver could use more indicators.

Arguments for or against moving the decision to user space (by notifying the 
supplicant only about signal quality changes without rating the values)?

Thanks,
Helmut