From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp3.Stanford.EDU ([171.67.20.26]:49995 "EHLO smtp3.stanford.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753828AbYGWUru (ORCPT ); Wed, 23 Jul 2008 16:47:50 -0400 Received: from smtp3.stanford.edu (localhost.localdomain [127.0.0.1]) by localhost (Postfix) with SMTP id 1A62260EBC2 for ; Wed, 23 Jul 2008 13:40:34 -0700 (PDT) Received: from localhost (Gautam.Stanford.EDU [171.64.38.214]) by smtp3.stanford.edu (Postfix) with ESMTP id DC56560EC09 for ; Wed, 23 Jul 2008 13:40:33 -0700 (PDT) Date: Wed, 23 Jul 2008 13:40:07 -0700 From: Gautam Iyer To: linux-wireless@vger.kernel.org Subject: Re: 2.6.26 b43 speed issue (redux) and new firmware drivers Message-ID: <20080723204007.GC23882@stanford.edu> (sfid-20080723_224753_413747_3DCD2B5B) References: <20080722193637.GC19885@stanford.edu> <48874C9D.2050900@lwfinger.net> <20080723203249.GB23882@stanford.edu> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="HG+GLK89HZ1zG0kk" In-Reply-To: <20080723203249.GB23882@stanford.edu> Sender: linux-wireless-owner@vger.kernel.org List-ID: --HG+GLK89HZ1zG0kk Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Jul 23, 2008 at 01:32:49PM -0700, Gautam Iyer wrote: >>> I'm writing to inquire about a "new" firmware drivers for Broadcom 43xx: >>> On April 6, 2008 it looks like broadcom-wl-4.150.10.5.2.tar.bz2 appeared >>> on http://mirror2.openwrt.org/sources/. The install guide for b43 >>> recommends you use b43-fwcutter-011 and broadcom-wl-4.150.10.5.tar.bz2 >>> I tried to use broadcom-wl-4.150.10.5.2.tar.bz2 with b43-fwcutter-011, >>> but it complained that the md5 sum was not recognized :). Just wondering >>> if there is any way to use this new firmware? >>> Thanks in advance, >>> GI >>> PS: The main reason I ask is for "performance": A while ago I reported >>> that my Broadcom 4312 gave 2/3 the speed under b43 (2.6.25), when >>> compared to ndiswrapper. (I tested by running ttcp, and measuring >>> the throughput. I got roughly 3MB/s with ndiswrapper, and >>> 2 MB/s with b43). >>> I just upgraded to 2.6.26, and found that my b43 speed *increased* >>> to 2.4MB/s :). So thanks to whomever is responsible! I was also >>> hoping that if I upgrade even the firmware I would be able to >>> "toast" ndiswrapper. (I transfer large files on my home network >>> often, which is why I care about the speed so much.) >> >> I do not know what changed between 4.150.10.5 and 4.150.10.2, but I >> doubt that the firmware in the new driver will make any appreciable >> difference in the performance of the BCM4312. My guess is that they >> found some errors in the handling of the N PHY or the LP PHY, which >> are the two newest devices, and fixed them. Of course, we do need to >> update fwcutter to test my hypothesis. As a reverse engineer, I also >> need to see what changed. What version is the Windows driver that you >> use? >=20 > Hi Larry, >=20 > Thanks for the response. The windows driver I used can be found at >=20 > http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.= jsp?lang=3Den&cc=3Dus&prodTypeId=3D321957&prodSeriesId=3D3355644&prodNameId= =3D3355645&swEnvOID=3D1059&swLang=3D8&mode=3D2&taskId=3D135&swItem=3Dob-557= 03-1 >=20 > It looks like HP released a few newer versions of this driver, which I > haven't tested yet. I use the b43 drivers all the time anyway. If it makes any difference -- clicking on the enhancements tab in the above link says that this driver provides broadcoms 4.170.25.12... GI --=20 Bakers trade bread recipes on a knead-to-know basis. --HG+GLK89HZ1zG0kk Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) iEYEARECAAYFAkiHlycACgkQ6plSLtsExHF0PwCfaKuCm2YyvyqykpdLbJS2O4ou tfsAoKdDCgzZ6Jol1UKv/UtjVA+qa9Fg =GRMl -----END PGP SIGNATURE----- --HG+GLK89HZ1zG0kk--