IPW_RSSI_TO_DBM
err = ipw_set_sensitivity(priv, network->stats.rssi + IPW_RSSI_TO_DBM);
s8 antsignal = frame->rssi_dbm - IPW_RSSI_TO_DBM; /* call it signed anyhow */
s8 signal = frame->rssi_dbm - IPW_RSSI_TO_DBM;
IPW_RSSI_TO_DBM,
IPW_RSSI_TO_DBM + 0x100,