From owner-freebsd-net@FreeBSD.ORG Wed Sep 8 12:32:54 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7F12810656C3 for ; Wed, 8 Sep 2010 12:32:54 +0000 (UTC) (envelope-from rpaulo@freebsd.org) Received: from karen.lavabit.com (karen.lavabit.com [72.249.41.33]) by mx1.freebsd.org (Postfix) with ESMTP id 595CF8FC13 for ; Wed, 8 Sep 2010 12:32:54 +0000 (UTC) Received: from d.earth.lavabit.com (d.earth.lavabit.com [192.168.111.13]) by karen.lavabit.com (Postfix) with ESMTP id B503011B85B; Wed, 8 Sep 2010 07:32:53 -0500 (CDT) Received: from 10.0.10.3 (221.163.108.93.rev.vodafone.pt [93.108.163.221]) by lavabit.com with ESMTP id V0N2E3ST513C; Wed, 08 Sep 2010 07:32:53 -0500 Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: Rui Paulo In-Reply-To: <1F563B4F-B1DF-4829-966D-63264EC8AB61@jnielsen.net> Date: Wed, 8 Sep 2010 13:32:51 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <9EB9CCE4-2F4A-4653-BF11-066E3490F3AF@FreeBSD.org> References: <1F563B4F-B1DF-4829-966D-63264EC8AB61@jnielsen.net> To: John Nielsen X-Mailer: Apple Mail (2.1081) Cc: freebsd-net@freebsd.org Subject: Re: Is 802.11n rate control being worked on? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Sep 2010 12:32:54 -0000 On 7 Sep 2010, at 19:41, John Nielsen wrote: > I am working on a network scenario which would benefit greatly from = the MIMO features and higher bandwidth of 802.11n. It's my understanding = that 11n is not fully supported in FreeBSD since there is no appropriate = rate control algorithm in the tree. Is that still the case? I've worked on supporting 11n on ath_rate_sample but it's incomplete. >=20 > I would _really_ like to run FreeBSD for this project, and I believe = the Atheros wireless cards I plan to use are supported by ath(4). I'd = like to find out what else needs to happen to complete the picture. I = may even go so far as to write some code myself. :) >=20 > Is anyone working on this at the moment? Not really, I did some work in the past, but it's incomplete. >=20 > Is it just the rate control that needs to be done or are there other = parts involved? Is MIMO separate? We have MIMO on some non-Atheros drivers, but one of these drivers = (Ralink 11n) is not yet in the tree. >=20 > Is there a detailed description of the missing pieces somewhere? Or a = not-very-detailed summary of where to look and what to read to get = started? Not really. There's some interest from other FreeBSD committers to get = this going, so I'll let them chime in. Regards, -- Rui Paulo