Return-path: Received: from mail-qy0-f11.google.com ([209.85.221.11]:54405 "EHLO mail-qy0-f11.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754011AbYLDNOM convert rfc822-to-8bit (ORCPT ); Thu, 4 Dec 2008 08:14:12 -0500 Received: by qyk4 with SMTP id 4so4888844qyk.13 for ; Thu, 04 Dec 2008 05:14:10 -0800 (PST) Message-ID: <69e28c910812040514l2d325eeekef3decbcce2520b2@mail.gmail.com> (sfid-20081204_141415_478820_D6B37128) Date: Thu, 4 Dec 2008 14:14:10 +0100 From: "=?ISO-8859-1?Q?Stefanik_G=E1bor?=" To: "Christian Lamparter" Subject: Re: [PATCH V2] rtl8187: Improve wireless statistics for RTL8187 Cc: "Larry Finger" , "John W Linville" , "Herton Ronaldo Krzesinski" , "Hin-Tak Leung" , barreyromartin@gmail.com, linux-wireless@vger.kernel.org In-Reply-To: <200812041357.00103.chunkeey@web.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <49375ac0.z1uZDBLv3IxmmMgD%Larry.Finger@lwfinger.net> <69e28c910812040444l5d76632ah288078bd3db172d4@mail.gmail.com> <200812041357.00103.chunkeey@web.de> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Dec 4, 2008 at 1:57 PM, Christian Lamparter w= rote: > On Thursday 04 December 2008 13:44:09 Stefanik G=E1bor wrote: > >> BTW using RTL8187B's scaling constants for RTL8187L also work well >> with this patch - I get almost identical readings from my BCM4318 an= d >> my RTL8187L. (I haven't yet submitted my version of the patch becaus= e >> it's pretty messy, with #if 0'd code and such.) I wonder whether b43 >> or p54usb is more correct... However, it looks like the same algorit= hm >> is applicable for both RTL8187 variants. >> > probably b43. p54usb uses static scaling constants to calculate > signal & noise dbm, instead of finding the correct values from the de= vice eeprom > (Note: Link Quality doesn't substract the noise so it could be off ev= en more). > > However, in my testing it was only a few +/- dbm(s), what's your read= ing? > =46rom an AP ~5M from my antenna, both cards report around -45dBm. I haven't tested the p54usb-based algorithm yet. --=20 Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireles= s" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html