From owner-freebsd-wireless@FreeBSD.ORG Tue Aug 9 10:57:04 2011 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5269F106566B for ; Tue, 9 Aug 2011 10:57:04 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) by mx1.freebsd.org (Postfix) with ESMTP id 0ABBC8FC0C for ; Tue, 9 Aug 2011 10:57:03 +0000 (UTC) Received: by ywm39 with SMTP id 39so3907794ywm.13 for ; Tue, 09 Aug 2011 03:57:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=KIrgWPLHou2zfKR1bZRbJrebrm53UFpY+H16opDD3kM=; b=YO1Zpg1hSfrkUUi6gMrX513XnW+Yy18ybvmW8cofqIrOGD9J/gL2te95cUvz1L8N1S z/+TnBcpxTnKi9ZXYc0fZb3mqCIhIkqtRDdeuurPLp2Zw7vLwI432JAWLmo5N4oTE3IY 862PqRfPMXAbu3X56E9iu4MDoC0BncGhnClKE= MIME-Version: 1.0 Received: by 10.150.238.2 with SMTP id l2mr2802388ybh.44.1312887423250; Tue, 09 Aug 2011 03:57:03 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.151.26.14 with HTTP; Tue, 9 Aug 2011 03:57:03 -0700 (PDT) In-Reply-To: <347137729.20110809142825@serebryakov.spb.ru> References: <1151152206.20110808220720@serebryakov.spb.ru> <201108090829.18712.bschmidt@freebsd.org> <1681554189.20110809132747@serebryakov.spb.ru> <7764247.20110809135323@serebryakov.spb.ru> <281311475.20110809142033@serebryakov.spb.ru> <347137729.20110809142825@serebryakov.spb.ru> Date: Tue, 9 Aug 2011 18:57:03 +0800 X-Google-Sender-Auth: RVT-TXAaUMvk8Fat07hP9VLP_Ls Message-ID: From: Adrian Chadd To: Lev Serebryakov Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-wireless@freebsd.org Subject: Re: Bad host-vased AP performace -- and qouple of questions about FreeBSD WiFi stack tuning X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Aug 2011 10:57:04 -0000 2011/8/9 Lev Serebryakov : > =A0What a mess. We have two "txpower" values -- command-line one and > =A0internal (2*cmd) one! Well, it's because internally it's represented as an integer in 0.5 dBm units. :-) Clear as day to me! > =A0BTW, ifconfig(8) uses very unclear wording: > > =A0"The power argument is specified in .5 dBm units." > > =A0It is not clear, what does it mean: that one txpower step means 0.5 > =A0dBm and 1 on command line means 0.5 dBm, 2 means 1 dBm, and so on, up = to 30 > =A0on command line means 15dBm, OR (which seems to be true, but it is > =A0not clear!) it means, that you could set 0.5, 1, 1.5, and so on, and > =A0these numbers "true" dBm, but you cannot set 16.6, for example. You're right it's a bit unclear. Patches to make it more clear are accepted= :) Adrian