[Olsr-dev] mac80211 / link-bandwith from userland forcostcalculation / plugin

Henning Rogge (spam-protected)
Tue Sep 14 08:14:20 CEST 2010

On Tue September 14 2010 08:09:05 Mitar wrote:
> Hi!
> On Tue, Sep 14, 2010 at 7:50 AM, Henning Rogge
> <(spam-protected)> wrote:
> >> (data rate, RSSI)
> Is RSSI really measured on different hardware the same? We tried do
> add this into reporting for our nodes but it simply looks like every
> driver/manufacturer uses this its own way. Will this be something
> mac80211 will unite/make comparable?
I am not sure what's the current state of RSSI measurement in mac80211, but 
it's difficult to convert to a generic range because some chips are just 
measuring really strange things.

> And of course the question is data rate and RSSI of what? Connection?
> Interface? Can some interface send to different clients with different
> data rate? What about in ad-hoc?
Outgoing datarate and incoming RSSI is always "per neighbor", at least if you 
query them with the "iw station dump" command (or a similar nl80211 code)l.

Henning Rogge

Diplom-Informatiker Henning Rogge , Fraunhofer-Institut für
Kommunikation, Informationsverarbeitung und Ergonomie FKIE
Kommunikationssysteme (KOM)
Neuenahrer Straße 20, 53343 Wachtberg, Germany
Telefon +49 228 9435-961,   Fax +49 228 9435 685
mailto:(spam-protected) http://www.fkie.fraunhofer.de
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