From owner-freebsd-current@FreeBSD.ORG Tue Sep 12 14:03:26 2006 Return-Path: X-Original-To: current@freebsd.org Delivered-To: freebsd-current@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 140B516A417 for ; Tue, 12 Sep 2006 14:03:26 +0000 (UTC) (envelope-from andre@freebsd.org) Received: from c00l3r.networx.ch (c00l3r.networx.ch [62.48.2.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5531543D45 for ; Tue, 12 Sep 2006 14:03:25 +0000 (GMT) (envelope-from andre@freebsd.org) Received: (qmail 12282 invoked from network); 12 Sep 2006 13:47:19 -0000 Received: from dotat.atdotat.at (HELO [62.48.0.47]) ([62.48.0.47]) (envelope-sender ) by c00l3r.networx.ch (qmail-ldap-1.03) with SMTP for ; 12 Sep 2006 13:47:19 -0000 Message-ID: <4506BE2C.1050903@freebsd.org> Date: Tue, 12 Sep 2006 16:03:24 +0200 From: Andre Oppermann User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8b) Gecko/20050217 MIME-Version: 1.0 To: Ian FREISLICH References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: current@freebsd.org, jfvogel@gmail.com Subject: Re: TSO, SMP and the em driver. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Sep 2006 14:03:26 -0000 Ian FREISLICH wrote: > Hi > > I've noticed that after an apparently random period of time something > goes wierd with my networking. A tcpdump shows traffic is recieved, > but trussing a daemon (sshd for instance) shows the packets are not > making it that far. Also, no packets are transmitted either. > > Here's an ifconfig of the interface while it doesn't transmit or > recieve packets, note the OACTIVE: OACTIVE means the interface is stuck. This looks like a bug in the em(4) driver. I've copied Jack Vogel, the driver maintainer from Intel, into this email. -- Andre > em0: flags=8c43 mtu 1500 > options=3cb > inet 41.204.193.40 netmask 0xfffffff0 broadcast 41.204.193.47 > ether 00:04:23:d4:12:2e > media: Ethernet autoselect (100baseTX ) > status: active > > If I disable and re-enable TSO, the interface cames back, but > probably because of an interface reset. It comes back without the > OACTIVE flag and then all works well for some time. > > Here's the pciconf output for the ethernet device. > > em0@pci3:4:0: class=0x020000 card=0x10798086 chip=0x10798086 rev=0x03 hdr=0x00 > vendor = 'Intel Corporation' > device = '82546EB Dual Port Gigabit Ethernet Controller' > class = network > subclass = ethernet > > So far, it hasn't happened again with TSO disabled over a period > where it happened twice. Let me know if there's any debugging I > can do for you. Interestingly, I have 4 more of these dual NICs > running on the same version of the source without ony problems, but > the working cards are on UP machines. > > Ian > > -- > Ian Freislich > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > >