Return-path: Received: from mail-oa0-f47.google.com ([209.85.219.47]:41052 "EHLO mail-oa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762611Ab3DCKfJ convert rfc822-to-8bit (ORCPT ); Wed, 3 Apr 2013 06:35:09 -0400 Received: by mail-oa0-f47.google.com with SMTP id o17so1314837oag.6 for ; Wed, 03 Apr 2013 03:35:09 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: Date: Wed, 3 Apr 2013 12:35:08 +0200 Message-ID: (sfid-20130403_123516_205780_9926B49A) Subject: Re: BCM4321 (b43) on AppleTV (1st gen) From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= To: Dag Wieers Cc: b43-dev@lists.infradead.org, linux-wireless@vger.kernel.org Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: 2013/4/3 Dag Wieers : > On Wed, 3 Apr 2013, Rafał Miłecki wrote: > >> It's terribly late reply, but only recently I've time to plug in my >> old BCM4321/BCM4322 cards and test them. There were few regressions >> affecting BCM4322, but nothing BCM4321 related (there are many >> differences between them). >> >> In my env I can't get more than 22Mb/s using my BCM4322. It's >> 2,75MB/s, so your 3MB/s is even better result than mine. The problem >> is that b43 doesn't support 802.11n features, so it can't work any >> faster. Values around 2-3MB/s is maximum you can get from 802.11g. > > > I can see from the access point that it often indicates the system to be > connected at 54Mbps, but I never seem to get that throughput. However the > numbers I indicate are SFTP transfers with some overhead, but also buffering > (so it usually starts off quite fast and then the number drops rapidly). Not > very scientific so it might as well be 2.75MB/s :) 54Mb/s is 6,75MB/s, but you'll never reach that speed on 802.11g. No matter what card, what driver :) 3MB/s is probably sth around the maximum speed *in practice*. I was doing my tests with "iperf". >> I plan to add support for new devices, then 5GHz, then maybe I'll take >> a look at 802.11n standard. So unfortunately there's a long way before >> we can support higher speeds :( > > > If it helps, I can offer two of this mini PCI adapters to any developer > interested in improving the support of the BCM4321. I've tons of N-PHY (and not only) devices around, so don't really need any donate of that devices. I just have to find time for this. -- Rafał