From owner-freebsd-net@FreeBSD.ORG Mon Oct 22 05:01:17 2007 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 D255C16A419 for ; Mon, 22 Oct 2007 05:01:17 +0000 (UTC) (envelope-from sandiegobiker@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.231]) by mx1.freebsd.org (Postfix) with ESMTP id 8BC0913C4A7 for ; Mon, 22 Oct 2007 05:01:17 +0000 (UTC) (envelope-from sandiegobiker@gmail.com) Received: by wx-out-0506.google.com with SMTP id i29so1106524wxd for ; Sun, 21 Oct 2007 22:01:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; bh=FtPXggCaIHRKPveEHWtHs4ekvy8gqpm7i1NGjZ6hXF0=; b=CevNov9kW3THwNU4G6Gxtj/A1nJeVmwEahNwAuUV6nwv0KM/iRCVGlqPyrB3d8a/JJlmCu6QIbwuqfDPVesmnDq2NY8Swdd5/0ycoNHnZ2lc27+FfZEeOx9hShZrRntQxM0ReaOiO7pP/I1adA0pn1Kh3f3nqyWV4lVjPuOAsj4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=FAfqQ3JarwPV9u2oZVfneP8IFMf/tz/ucq1szwGmt3x9o7LpytV7g0781dYNvoR40ZJ/Jxa6vSPKJ1QBiVymeCQX/XTtjD2wUjEqWiuEVYGlgiuYNDfdHqIA8LKQVTP6I9U5joQ5f/xaWrH//w5SEMoj8nb55/gmJdT5qNpjELU= Received: by 10.70.7.13 with SMTP id 13mr8128423wxg.1193029268702; Sun, 21 Oct 2007 22:01:08 -0700 (PDT) Received: by 10.70.19.9 with HTTP; Sun, 21 Oct 2007 22:01:08 -0700 (PDT) Message-ID: <27cb3ada0710212201r103c3adl25a229e772c9526f@mail.gmail.com> Date: Sun, 21 Oct 2007 22:01:08 -0700 From: "Len Gross" To: "Antony Mawer" In-Reply-To: <471BFA09.8060504@mawer.org> MIME-Version: 1.0 References: <27cb3ada0710172051t536a4d11pfdfdb079ebd98932@mail.gmail.com> <20071019224155.GI20308@server.vk2pj.dyndns.org> <20071020183000.E8153@knop-beagle.kn.op.dlr.de> <27cb3ada0710201108l5e717fdbhc9fab610cb2a047c@mail.gmail.com> <471A6B72.2030305@elischer.org> <27cb3ada0710201647y5104bd1fge2540c5fc1e2b49c@mail.gmail.com> <471BFA09.8060504@mawer.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-net@freebsd.org, Julian Elischer Subject: Re: Disable Exponential Backoff (retry) on Ethernet? 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: Mon, 22 Oct 2007 05:01:17 -0000 Thanks. I'll look into that. BTW: The "lance" chip appears to be 1990 vintage, might even be ISA On 10/21/07, Antony Mawer wrote: > > On 21/10/2007 9:47 AM, Len Gross wrote: > > May have found what I need. > > > > lancereg.h references an AMD Ethernet chip that appears to have a > register > > you > > can set to enable/disable retry. So, I would just have to find some > > NICs that use this chip. A task for later in the project. > > > > Thanks to all for the discussion. > > The default NIC in VMware Workstation emulates this NIC using the lnc > driver - I do not know how accurate the emulation is (eg. does the > emulated NIC support this register), but it may provide another avenue > to explore for your testing... > > --Antony >