From owner-freebsd-net@FreeBSD.ORG Sat Jul 1 06:33:53 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 02EFC16A403 for ; Sat, 1 Jul 2006 06:33:53 +0000 (UTC) (envelope-from nikolas.britton@gmail.com) Received: from nz-out-0102.google.com (nz-out-0102.google.com [64.233.162.200]) by mx1.FreeBSD.org (Postfix) with ESMTP id 45D9B43D4C for ; Sat, 1 Jul 2006 06:33:52 +0000 (GMT) (envelope-from nikolas.britton@gmail.com) Received: by nz-out-0102.google.com with SMTP id x7so271270nzc for ; Fri, 30 Jun 2006 23:33:51 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=PTl1G/EBgkHkTN5tBMTWPTRxOns3fACax9wDZz6kOYWN9cY85gfdQmTAoqkWGiUkh++zfkaNQB+Xd9sPv55/ChPhN76VbSafVny3WZiO8CiYoxJpo5yBqthfxpBCjenXZIVSA3iqYxbWYGEL/bjSFjbeQKT3n/xUwCBGxw53liA= Received: by 10.36.113.8 with SMTP id l8mr1578380nzc; Fri, 30 Jun 2006 23:33:51 -0700 (PDT) Received: by 10.36.12.11 with HTTP; Fri, 30 Jun 2006 23:33:51 -0700 (PDT) Message-ID: Date: Sat, 1 Jul 2006 01:33:51 -0500 From: "Nikolas Britton" To: pyunyh@gmail.com In-Reply-To: <20060701051844.GE54876@cdnetworks.co.kr> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20060630060956.GA51353@cdnetworks.co.kr> <20060701051844.GE54876@cdnetworks.co.kr> Cc: freebsd-net@freebsd.org Subject: Re: Marvell YukonII Status Update? 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: Sat, 01 Jul 2006 06:33:53 -0000 On 7/1/06, Pyun YongHyeon wrote: > On Fri, Jun 30, 2006 at 11:39:14PM -0500, Nikolas Britton wrote: > > On 6/30/06, Pyun YongHyeon wrote: > > >On Thu, Jun 29, 2006 at 10:53:52PM -0500, Nikolas Britton wrote: > > > > Anyone know what's going on with YukonII support in FreeBSD, > > > > specifically the Marvell chips used in PCI-Express add-on cards? > > > > > > > > Last I checked somebody was developing an experimental driver and > > > > Marvell had just released the code to their FreeBSD 5.x/6.x driver: > > > > mykbsd60x86-8.12.2.3.tar (bindary kmod package) > > > > mykbsd60x86-8.12.1.3-src.tgz (source code) > > > > > > > > > >I don't know current status of the driver. ATM FreeBSD YukonII > > >driver has stability issues and the driver needs big cleanups > > >if we import the driver into src tree. But I wouldn't do the > > >job and I'll spend my spare time to other thing. > > >I know, from my previous experience(sk(4), stge(4)), how > > >difficult to write a driver without a document and how hard to > > >write a correct driver without knowing hardware internals. I'm > > >sure there are many developers eager to write YukonII driver if > > >they can access the hardware documentation. However I think there > > >is no possibility that Marvell releases their chip documentations. > > > > > > > Marvell will give you the docs if you sign an NDA, I know it's stupid > > but I think it's the only way... unless we vote with the wallet... Who > > has PCI-Express gigabit NIC cards that meet the following criteria?: > > > > a) Supported by FreeBSD. > > b) Unencumbered documentation. > > c) Checksum offloading. > > > > There are many PCIe GigE hardwares upported by em(4) or bge/bce(4). > AFAIK the only hardware features not supported by em(4)/bge(4) driver > is TSO. And hardwares supported by em(4) also have a capability to > offload IPv6 checksumming too but it's not yet supported by the driver. > Will TCP Segmentation Offloading help if you already use a 9000 byte mtu, and is it going to be supported, someday, with em(4)/bge(4)?... I'm mostly clueless about TSO. -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/