Return-path: Received: from nf-out-0910.google.com ([64.233.182.190]:22955 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935909AbYCFU4O (ORCPT ); Thu, 6 Mar 2008 15:56:14 -0500 Received: by nf-out-0910.google.com with SMTP id g13so46096nfb.21 for ; Thu, 06 Mar 2008 12:55:53 -0800 (PST) To: "Luis R. Rodriguez" Subject: Re: [RFC] RCPI support in radiotap and in our wireless subsystems Date: Thu, 6 Mar 2008 21:55:17 +0100 Cc: linux-wireless , radiotap@mail.ojctech.com, "Ivan Seskar" , "Haris Kremo" , "John W. Linville" , "Simon Barber" , "Dan Williams" , "Luis Carlos Cobo" , "Javier Cardona" , "Sam Leffler" , "Jean Tourrilhes" , "Stefano Brivio" , "Johannes Berg" References: <43e72e890803061238u50847f1fs587627c5fac028d6@mail.gmail.com> In-Reply-To: <43e72e890803061238u50847f1fs587627c5fac028d6@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Message-Id: <200803062155.19725.IvDoorn@gmail.com> (sfid-20080306_205624_607486_E69A88CD) From: Ivo van Doorn Sender: linux-wireless-owner@vger.kernel.org List-ID: 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