From owner-freebsd-stable@FreeBSD.ORG Mon Mar 5 16:41:04 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9EED916A405 for ; Mon, 5 Mar 2007 16:41:04 +0000 (UTC) (envelope-from jfvogel@gmail.com) Received: from ug-out-1314.google.com (ug-out-1314.google.com [66.249.92.174]) by mx1.freebsd.org (Postfix) with ESMTP id 2C33313C48E for ; Mon, 5 Mar 2007 16:41:03 +0000 (UTC) (envelope-from jfvogel@gmail.com) Received: by ug-out-1314.google.com with SMTP id 71so1198610ugh for ; Mon, 05 Mar 2007 08:41:02 -0800 (PST) DKIM-Signature: a=rsa-sha1; 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:content-transfer-encoding:content-disposition:references; b=ZN9LVp5+U7gyUx0RIQE1UzIQPkvGE8LtficD3VyC/i3dw4bSdj8A9cHm6p66AWaMY+WR6tt1S5RSnWHBvui+8lPgy33S0iAARJpp7le+k+pPNxZ7Ou5l1cz9JQEvGNAlZVVC+KZexf0GbwFJzxBHbERqp7C815Ey7h3kBOPG1bU= 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:content-transfer-encoding:content-disposition:references; b=WzYdvldlI9BLe6uyuRlw6vIV91hbHHXa/m2FQXugIlyyJQojl/4OFaTTJFmxF7ubCEAbh/m35ff1cEIVCU1pZGzlZ/MQJNuD6kLZsE0JLlI+17JQNMsSbwRJ7zXvblq5KZCL8Ss4XNGPWYBkY7az2X1WRWtXoCIWUEVYY8JuXiE= Received: by 10.115.78.1 with SMTP id f1mr1213118wal.1173112861996; Mon, 05 Mar 2007 08:41:01 -0800 (PST) Received: by 10.114.103.15 with HTTP; Mon, 5 Mar 2007 08:41:01 -0800 (PST) Message-ID: <2a41acea0703050841ub56c513y1504ebe0af8052de@mail.gmail.com> Date: Mon, 5 Mar 2007 08:41:01 -0800 From: "Jack Vogel" To: "Duane Whitty" In-Reply-To: <20070305072535.GA6589@dwpc.dwlabs.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070305063006.GA17079@same.swcp.com> <20070305072535.GA6589@dwpc.dwlabs.ca> Cc: freebsd-stable@freebsd.org, Mark Costlow Subject: Re: ARP problem with 6.2-STABLE Intel PRO/1000 NIC, latest em driver X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Mar 2007 16:41:04 -0000 On 3/4/07, Duane Whitty wrote: > On Sun, Mar 04, 2007 at 11:30:07PM -0700, Mark Costlow wrote: > > The Machine: > > > > I have a dual Xeon 5130 machine, Supermicro motherboard, with > > the 82563EB NIC. From dmesg: > > > > CPU: Intel(R) Xeon(R) CPU 5130 @ 2.00GHz (2000.08-MHz 686-class CPU) > > cpu0: on acpi0 > > em0: port 0x2000-0x201f mem 0xda000000-0xda01ffff irq 18 at device 0.0 on pci4 > > > > The machine has 4G RAM and a 3ware 9000 series RAID controller with 2 drives. > > > > pciconf -l says: > > > > em0@pci4:0:0: class=0x020000 card=0x000015d9 chip=0x10968086 rev=0x01 hdr=0x00 > > em1@pci4:0:1: class=0x020000 card=0x000015d9 chip=0x10968086 rev=0x01 hdr=0x00 > > > > > > The symptom: > > > > The machine boots OK, but can only intermittently make netork connections. > > Eventually determined that it seems to only see a few ARP packets, so > > it's falling out of other machines' ARP tables, and is often unable to > > see the replies to its own ARP requests. It does see SOME ARPs > > though. When it is able to communicate with another machine, it > > does not appear to drop any packets between them (e.g. I scp'd a 500M file > > at 300Mbps to this machine). > > > > When I run "tcpdump -n arp" I see a few ARPs, but not many. In a 1-minute > > period, I saw 3 ARP who-has/reply packets. On a different machine on > > the same ethernet switch, I saw 225 who-has/reply packets in the same > > 1-minute period. > > > > I've tried different cables, and a different switch. I started with > > 6.2-RELEASE, and then went to 6.2-STABLE on 3/3/07 to get the latest > > em driver fixes. I've used SMP and GENERIC kernels. I get the same > > results in all cases. > > > > There are no firewall rules installed. > > > > I plugged in a USB ethernet adapter (realtek), and it works straight away. > > "tcpdump -n arp" sees the same noise as other machines on that LAN. > > > > Sounds like it could be bad hardware. Can you swap nics? No he can't these are LOMs (on the motherboard). > > I read through the recent threads on the em driver, but didn't see any > > reported symptoms like this. Has anyone seen anything like this? Got > > any hints for me? Am I doing something stupid? Did I leave out any > > useful information about my configuration? > > > > Maybe more of your dmesg might help as it could show interrrupt issues > that perhaps others could help diagnose Yes, agreed, this might be revealing. Jack