[Prism54-devel] Signal / noise level off?

Jens Maurer Jens.Maurer@gmx.net
Wed, 31 Dec 2003 00:15:05 +0100


Hello!

"iwconfig" on my card tells me the following:

eth1      Netgear WG511  ESSID:"WLAN"
[...]
           Link Quality:153/0  Signal level:-71 dBm  Noise level:-240 dBm


It looks as if the values for the signal and noise level
are a little too small.

I reviewed older e-mails that claimed that the TX power setting
was in 0.25 dBm units.  Probably that is the case here as well?

That would mean that this section of prism54_update_stats_helper()
and its vicinity needs fixing:

/* Noise floor.
  * I'm not sure if the unit is dBm.
  * Note : If we are not connected, this value seems to be irrevelant. */

         MGT_GET_REQUEST_U32_NOCACHE(priv, DOT11_OID_NOISEFLOOR, &u);
         priv->local_iwstatistics.qual.noise = u;


Jens Maurer