From owner-freebsd-net@FreeBSD.ORG Mon Oct 22 01:32:06 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 40F2216A419 for ; Mon, 22 Oct 2007 01:32:06 +0000 (UTC) (envelope-from fbsd-net@mawer.org) Received: from outbound.icp-qv1-irony-out2.iinet.net.au (outbound.icp-qv1-irony-out2.iinet.net.au [203.59.1.107]) by mx1.freebsd.org (Postfix) with ESMTP id C248313C4A6 for ; Mon, 22 Oct 2007 01:32:05 +0000 (UTC) (envelope-from fbsd-net@mawer.org) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAAAJ6XG0fLzq3r/2dsb2JhbAAM X-IronPort-AV: E=Sophos;i="4.21,308,1188748800"; d="scan'208";a="220372744" Received: from unknown (HELO [10.24.1.1]) ([203.206.173.235]) by outbound.icp-qv1-irony-out2.iinet.net.au with ESMTP; 22 Oct 2007 09:18:29 +0800 Message-ID: <471BFA09.8060504@mawer.org> Date: Mon, 22 Oct 2007 11:16:57 +1000 From: Antony Mawer User-Agent: Thunderbird 2.0.0.6 (Windows/20070728) MIME-Version: 1.0 To: Len Gross 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> In-Reply-To: <27cb3ada0710201647y5104bd1fge2540c5fc1e2b49c@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 01:32:06 -0000 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