From owner-freebsd-wireless@FreeBSD.ORG Wed Feb 27 08:55:33 2013 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 3BE06C1E; Wed, 27 Feb 2013 08:55:32 +0000 (UTC) (envelope-from sniperpr@gmail.com) Received: from mail-pb0-f53.google.com (mail-pb0-f53.google.com [209.85.160.53]) by mx1.freebsd.org (Postfix) with ESMTP id BCD7B1E7; Wed, 27 Feb 2013 08:55:32 +0000 (UTC) Received: by mail-pb0-f53.google.com with SMTP id un1so240166pbc.40 for ; Wed, 27 Feb 2013 00:55:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=x-received:date:from:to:cc:message-id:in-reply-to:references :subject:x-mailer:mime-version:content-type; bh=inY3aCNtBZ+RbOuVnriynfVHuiF2iU/YL1dYz8o1j24=; b=Ag3+EtqyRa2D+8aTaUcnuVRWJ1ek4zpT8j87uKISbFwLwRHK3zF8rQqlxU0RVbF1od POc0LK5QOcSCKb02qUj/7eI2VfEQWFeTFqZrcC7LRPGNHQJSmaL0cL4x5umJjxoeqQOi OIereXjZfZ3v19D0EdAvntNtN5PHulCUlfyrTGlzkhzHAwHQ5Vsg5kfQgINMnOJ/FVYY ukjgAPb5pGYIz7dpPEUFx1M2iPCh3tFXyCEDzxmjtJ9WHvKxpRUlRo6LJ8d43bVuEHhp lECaUVJy4UwJID9oOm4rFoadDlyxd6zRrnb8m26BKlFbJzW4/ok6WcFyyjFIENM1W4mI Ib0Q== X-Received: by 10.68.25.201 with SMTP id e9mr2142143pbg.145.1361955326185; Wed, 27 Feb 2013 00:55:26 -0800 (PST) Received: from [192.168.10.229] ([159.226.43.54]) by mx.google.com with ESMTPS id tm1sm3986134pbc.11.2013.02.27.00.55.21 (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 27 Feb 2013 00:55:24 -0800 (PST) Date: Wed, 27 Feb 2013 16:55:16 +0800 From: "adam.huang" To: Mukunda Haveri Message-ID: <1BB5E063EDB64336B8482336F34B0555@gmail.com> In-Reply-To: References: Subject: =?utf-8?Q?=E5=9B=9E=E5=A4=8D=EF=BC=9A_?=WiFi TDMA AR7161, results and moving forward X-Mailer: sparrow 1.6.4 (build 1176) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-wireless@freebsd.org, freebsd-mips@freebsd.org X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.14 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: Wed, 27 Feb 2013 08:55:33 -0000 hi, can you share your complex =46W=3F thanks. =20 =E5=9C=A8 2013=E5=B9=B42=E6=9C=8827=E6=97=A5=E6=98=9F=E6=9C=9F=E4=B8=89=EF= =BC=8C=E4=B8=8B=E5=8D=884:51=EF=BC=8CMukunda Haveri =E5=86=99=E9=81=93=EF= =BC=9A > Hi, > =20 > I have been trying in vain to get 2 freebsd based systems working with = a > wlan-lan bridge. > =20 > =7C Host A =7C <---> =7C Lan-side arge0 =7C <--> =7C AP Wlan =7C <--- A= ir ------- > > =7C STA Wlan =7C <---> =7C Lan-side arge0 =7C <--> =7C Host B =7C > =20 > Is this functionality broken on the head=3F OR Am I missing something=3F= > Appreciate if somebody can help me with scripts to setup the traffic in= the > mode mentioned above. > We are using AR9280 based wireless card along with AR7161 boards from > Compex... > =20 > Thanks, > Mukunda > =20 > =20 > On Tue, =46eb 19, 2013 at 2:58 AM, Adrian Chadd wrote: > =20 > > On 18 =46ebruary 2013 03:31, Mukunda Haveri wrote: > > > =20 > > > Thanks to Adrian's Wi=46i scripts, we were able to get the TDMA wor= king on > > the > > > Compex-AR7161 board. The results were surprising; we are able to do= , > > =20 > > close > > > to 100 mbps one way iperf tests and 40 mbps bidirectional Iperf in > > =20 > > non-TDMA > > > mode. We were able to achieve this, only after disabling all the de= bug > > > options in the kernel. Porting the U-Boot to the Compex-boards did = take > > > =20 > > =20 > > lot > > > of effort, but not the =22=46reeBsd=22. Many thanks to all the =22s= cientists=22 who > > > made this possible. > > > =20 > > =20 > > =20 > > Nice=21 Which wireless cards are you using=3F > > =20 > > =5B AR9280 =5D > =20 > =20 > > > Moving forward, it is observed that the TDMA throughput peaks at 9 = mbps > > and > > > refuses to move beyond. After reducing the slot duration to 1 ms, t= he > > > throughput increased to around 12 mbps. I was expecting the TDMA to= > > > =20 > > =20 > > yield a > > > better throughput because of collision-less scheme. I would like to= > > > understand if our observation is expected or if there's some inhere= nt > > > limitation within the TDMA controller. > > > =20 > > > It will be good to have some feedback from TDMers with similar > > experience or > > > better. > > =20 > > =20 > > Right now the TDMA code doesn't implement MCS rates or TX aggregation= . > > Thus you're not going to get 11n like throughput. > > =20 > > The first thing to implement is allowing for MCS rates > > (non-aggregation) and make sure all the packet duration calculations > > are being done =22right=22. > > =20 > > After that, we need to implement delayed blockack support in net80211= > > and the ath driver. That requires the stack to support handling BA > > requests/responses and ath(4) to mark all frame descriptors in a > > delayed-BA TID to be no-ack. > > =20 > > Once that's done, we can tie it all together to make it work over TDM= A. :-) > > =20 > > Thanks, > > =20 > > =20 > > Adrian > =20 > DISCLAIMER: > The information contained in this message (including any attachments) i= s confidential and may be privileged. If you have received it by mistake = please notify the sender by return e-mail and permanently delete this mes= sage and any attachments from your system. Any dissemination, use, review= , distribution, printing or copying of this message in whole or in part i= s strictly prohibited. Please note that e-mails are susceptible to change= . PointRed Telecom Ltd (including its group companies) shall not be liabl= e for the improper or incomplete transmission of the information containe= d in this communication nor for any delay in its receipt or damage to you= r system and does not guarantee that the integrity of this communication = has been maintained or that this communication is free of viruses, interc= eptions or interferences. =20 > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > freebsd-mips=40freebsd.org (mailto:freebsd-mips=40freebsd.org) mailing = list > http://lists.freebsd.org/mailman/listinfo/freebsd-mips > To unsubscribe, send any mail to =22freebsd-mips-unsubscribe=40freebsd.= org (mailto:freebsd-mips-unsubscribe=40freebsd.org)=22 > =20 > =20