From owner-freebsd-net@FreeBSD.ORG Tue Jul 8 07:32:10 2008 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 C6D3C106566C for ; Tue, 8 Jul 2008 07:32:10 +0000 (UTC) (envelope-from kip.macy@gmail.com) Received: from wa-out-1112.google.com (wa-out-1112.google.com [209.85.146.178]) by mx1.freebsd.org (Postfix) with ESMTP id 951078FC1F for ; Tue, 8 Jul 2008 07:32:10 +0000 (UTC) (envelope-from kip.macy@gmail.com) Received: by wa-out-1112.google.com with SMTP id j4so1420237wah.3 for ; Tue, 08 Jul 2008 00:32:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=iYu0Pqecgdlg+gN8h2v4SEKbdC9un7VwJ6OJoV+ACv0=; b=K45s6wLSenCsRijR6pBGydvkBZ8kfcoHkapz/arZ6ng4JhYOrL4nQ5l/gXVVkw7vQt CUt+suR+/FWy0R083REYJihRR83NIMEyomFpGrXng3uMt4SP7C/mchy2cKHqd/Q+GUQ9 pGmz9Ct+gjLAtgfp89SqvZlB5Tjao9+t+shD4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=EbeJkGeVGQcYUd0LtaHJgEKPTKcetqqgNA+Q3rHfyXarR99R4oRzM7U1FrZUmiAHnP f0Mwkdr5OXi9JRLUexACHzlDrhlslZDVDRy4Idafkbh33Pq1l3BCZ6oiBbgkY1BPLkGl E5xAoAYusjQTbw95nGC23R20pMT2EL2EedkhA= Received: by 10.114.147.7 with SMTP id u7mr7050220wad.188.1215500670925; Tue, 08 Jul 2008 00:04:30 -0700 (PDT) Received: by 10.114.59.4 with HTTP; Tue, 8 Jul 2008 00:04:30 -0700 (PDT) Message-ID: Date: Tue, 8 Jul 2008 00:04:30 -0700 From: "Kip Macy" To: Paul In-Reply-To: <4872C161.6080105@gtcomm.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <4867420D.7090406@gtcomm.net> <4869B025.9080006@gtcomm.net> <486A7E45.3030902@gtcomm.net> <486A8F24.5010000@gtcomm.net> <486A9A0E.6060308@elischer.org> <486B41D5.3060609@gtcomm.net> <4871E85C.8090907@freebsd.org> <48726422.7050703@gtcomm.net> <200807080107.m6817XxO021966@lava.sentex.ca> <4872C161.6080105@gtcomm.net> Cc: FreeBSD Net , Andre Oppermann , Mike Tancsa Subject: Re: Freebsd IP Forwarding performance (question, and some info) [7-stable, current, em, smp] 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: Tue, 08 Jul 2008 07:32:10 -0000 On Mon, Jul 7, 2008 at 6:22 PM, Paul wrote: > I read through the IGB driver, and it says 82575/6 only... which is the new > chip Intel is releasing on the cards this month 2 port > and october 4 port, but the chips are on some of the motherboards right now. > Why can't it also use the 82571 ? doesn't make any sense.. I haven't tried > it but just browsing the driver source > doesn't look like it will work. The igb driver has been written to remove a lot of the cruft that has accumulated to work around deficiencies in earlier 8257x hardware. Although it supports "legacy" descriptor handling it has a new mode of descriptor handling that is ostensibly better. I don't have access to the data sheets for pre-zoar hardware so I'm not sure what it would take to support multiple queues on that hardware. -Kip