Re: [RFC] RCPI support in radiotap and in our wireless subsystems

Hi.

> ---
> 
> For ipw2200:
> 
> s8 antsignal = frame->rssi_dbm - IPW_RSSI_TO_DBM;
> 
> and IPW_RSSI_TO_DBM is set to 112.
> 
> Is antsignal above the "measure by the PHY sublayer of the received RF
> power in the channel measured over the entire received frame"?

For completeness, the rt2x00 & RSSI:

rt2400pci, rt2500pci, rt2500usb:
Same as ipw2200 only the IPW_RSSI_TO_DBM varies from 100 to 120 (as
hardcoded value in the register) to a unsigned char value read from
the EEPROM. The legacy drivers _suggest_ this is the rssi...

rt61pci, rt73usb:
The device reports an agc value, this is used as basis for a vague calculation
to determine the RSSI_TO_DBM offset based on LNA and current operating band.
Here too, the legacy driver suggests this is the rssi...

Ivo