On Sat, 2008-11-15 at 17:15 +0300, Andrey Borzenkov wrote: > Subject: [PATCH] orinoco: indicate it is using dBm in wireless_stats and spy > From: Andrey Borzenkov <arvidjaar@xxxxxxx> > > Since WE7 /proc/net/wireless checks whether level and noise are in dBm > and shows them accordingly. Indicate that we return signal and noice > levels in dBm. I believe the formula we are using is not exact. Intersil firmware has a separate register (HERMES_RID_DBMCOMMSQUALITY_INTERSIL) that provides the dBm data. It relates to the data we are using (HERMES_RID_COMMSQUALITY) in a linear way, but the multiplier is not 1. I remember I tried to recover the formula but didn't have time to complete it. Besides, different brands and version of the firmware do it differently. Anyway, we are using the same formula everywhere, yet we are inconsistent. In some places the code uses IW_QUAL_DBM, in some places is doesn't. It's better to be consistent. We can improve the formula later. The numbers are in the reasonable range. > Signed-off-by: Andrey Borzenkov <arvidjaar@xxxxxxx> (with some hesitation) Signed-off-by: Pavel Roskin <proski@xxxxxxx> -- Regards, Pavel Roskin -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
