From owner-freebsd-net@FreeBSD.ORG Thu Sep 9 13:45:47 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 56CEF10656D6 for ; Thu, 9 Sep 2010 13:45:47 +0000 (UTC) (envelope-from lists@jnielsen.net) Received: from ns1temp.jnielsen.net (ns1temp.jnielsen.net [69.55.230.42]) by mx1.freebsd.org (Postfix) with ESMTP id DD5A48FC1E for ; Thu, 9 Sep 2010 13:45:46 +0000 (UTC) Received: from [192.168.2.43] (jn@stealth.jnielsen.net [74.218.226.254]) (authenticated bits=0) by ns1temp.jnielsen.net (8.14.3/8.14.3) with ESMTP id o89DjjXV045298 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Thu, 9 Sep 2010 09:45:45 -0400 (EDT) (envelope-from lists@jnielsen.net) Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: John Nielsen In-Reply-To: <9EB9CCE4-2F4A-4653-BF11-066E3490F3AF@FreeBSD.org> Date: Thu, 9 Sep 2010 09:45:44 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: References: <1F563B4F-B1DF-4829-966D-63264EC8AB61@jnielsen.net> <9EB9CCE4-2F4A-4653-BF11-066E3490F3AF@FreeBSD.org> To: Rui Paulo X-Mailer: Apple Mail (2.1081) X-DCC-x.dcc-servers-Metrics: ns1temp.jnielsen.net; whitelist 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: Thu, 09 Sep 2010 13:45:47 -0000 On Sep 8, 2010, at 8:32 AM, Rui Paulo wrote: > On 7 Sep 2010, at 19:41, John Nielsen wrote: >=20 >> 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? >=20 > I've worked on supporting 11n on ath_rate_sample but it's incomplete. >=20 >>=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? >=20 > Not really, I did some work in the past, but it's incomplete. >=20 >>=20 >> Is it just the rate control that needs to be done or are there other = parts involved? Is MIMO separate? >=20 > We have MIMO on some non-Atheros drivers, but one of these drivers = (Ralink 11n) is not yet in the tree. That would be interesting to look at. Is the code somewhere publicly = available? Is it slated to hit the tree soon? >> 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? >=20 > Not really. There's some interest from other FreeBSD committers to get = this going, so I'll let them chime in. Surprisingly silent so far. Is there a better list to post this to? Thanks, JN