Date: Thu, 9 Sep 2010 22:00:27 +0100 From: Rui Paulo <rpaulo@freebsd.org> To: John Nielsen <lists@jnielsen.net> Cc: freebsd-net@freebsd.org Subject: Re: Is 802.11n rate control being worked on? Message-ID: <FF4A4CFB-7A0A-495F-90C3-B49A44D7E318@freebsd.org> In-Reply-To: <B6BF5D48-216E-4152-BF78-16DB90FD505E@jnielsen.net> References: <1F563B4F-B1DF-4829-966D-63264EC8AB61@jnielsen.net> <9EB9CCE4-2F4A-4653-BF11-066E3490F3AF@FreeBSD.org> <B6BF5D48-216E-4152-BF78-16DB90FD505E@jnielsen.net>
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On 9 Sep 2010, at 14:45, John Nielsen wrote: > On Sep 8, 2010, at 8:32 AM, Rui Paulo wrote: >=20 >> 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. >=20 > That would be interesting to look at. Is the code somewhere publicly = available? Is it slated to hit the tree soon? There's a git repo somewhere on the net; can't remember where. This = information should be in the FreeBSD forums. The driver is for the = rt2860. >=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? >>=20 >> Not really. There's some interest from other FreeBSD committers to = get this going, so I'll let them chime in. >=20 > Surprisingly silent so far. Is there a better list to post this to? There aren't many folks working on this. -- Rui Paulo
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