Subject: RE: proposal for new wireless configuration API

From: Johannes Berg <[email-masked]>
Date: Fri, 18 Aug 2006 09:01:47 +0200

On Thu, 2006-08-17 at 09:42 -0700, Simon Barber wrote:
> The spec for RSSI is very loose - RSSI is just a 8 bit unsigned number,
> guaranteed to be a monotonically increasing function of signal strength.
> You don't get to know anything about the scale, or linearity of the
> function. In essence RSSI is a vendor specific value, of no known units.
> Not very useful unless you know some card specific details to help
> interpret it.

Yeah, if you knew at least linearity it'd be more useful.

> Now some cards return a signal strength in dBm as the RSSI - note that
> this fits the requirements of a RSSI measure just fine. RCPI is simply a
                                  ^^^^
did you mean to write RCPI there?

> more tightly specified signal strength measure.

Ah, ok. Yes, I think we almost know how to make the bcm card report dBm
instead.

johannes