From owner-freebsd-stable@FreeBSD.ORG Fri Jan 15 19:12:46 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 265061065692 for ; Fri, 15 Jan 2010 19:12:46 +0000 (UTC) (envelope-from alan.bryan@yahoo.com) Received: from web50503.mail.re2.yahoo.com (web50503.mail.re2.yahoo.com [206.190.38.79]) by mx1.freebsd.org (Postfix) with SMTP id CABAD8FC13 for ; Fri, 15 Jan 2010 19:12:45 +0000 (UTC) Received: (qmail 58495 invoked by uid 60001); 15 Jan 2010 19:12:43 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1263582763; bh=KiuBfn6Efw2AH2d4hxcGKd6PooROokeX2JrwfZUr3Wg=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=IF5NIY41EMr/oMZYHLdLusH+l0Nr2Vs1YH9KfW6dhvqbzVBzN0C28lrfd1y5awidpZVfGhtii0uQXWQDVq+WG9fedap5FmW6u7Ve5YnWVHos6S0RNSC49a2MDjYFm5bMk4jTGCCwEe4EtSXqXgWvNRjgrQUMJBVBH3BWomlyCNg= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:MIME-Version:Content-Type; b=Jz8rTS9NlX82m9YJMhU1dy+c8Vf5lidfBHvq6zkZOJDvGtWscgW6ZdQp0iRzozJSORoI2Tn2nX2E5jtok05epsGX0JEZWI9luLx8VjtB41ugXBHKSaxS9KSNrich0Wez4ZGS7GkJ2OEka1VPREu5pj3JngaM9i4/md6/W3tdNe8=; Message-ID: <491716.58173.qm@web50503.mail.re2.yahoo.com> X-YMail-OSG: RBtUwpgVM1mA.FDkL2LsgN_VqQF0OaCnZB9.ZqYNBlpCCtglEPE_qA6GeFOha4l4V1ODzOQxxRf56XKNxdJIDPmC4TtNlFURWCaymYzk2H22MJrC8_AIibdX3IQVAL_GzCwWluQx5P4sluiy_vS5j58bg32XG4unM8ZeUi3EpGAu7Ip_df9beaAkzmQgrZsM.VxHALdvtVVkR_WuC7QyU4JXOOhN0giVLtZIUWk71lLPKco1QsfQMKM22HJGi7KYWGGaw5VUWAo.YYJL1LgvTMU4r6TvVqqYfn9NS5AE4gX8jIgwO7.2aacYDS4- Received: from [99.24.6.121] by web50503.mail.re2.yahoo.com via HTTP; Fri, 15 Jan 2010 11:12:43 PST X-Mailer: YahooMailClassic/9.0.20 YahooMailWebService/0.8.100.260964 Date: Fri, 15 Jan 2010 11:12:43 -0800 (PST) From: alan bryan To: freebsd-stable@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: General problems with checksums (txcsum/rxcsum) on FreeBSD 8.0? 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: Fri, 15 Jan 2010 19:12:46 -0000 I just read a different thread about problems with checksums on vge (and nfe in the replies). I'll just chime in here with some more information - I have a couple other message threads going about some weird high packet volumes on my new FreeBSD 8.0-Release NFS server. I thought it might be an issue with the igb driver so I put in a new card using em instead and got the exact same behavior. I'm currently sifting through a tcpdump in wireshark and there are all sorts of messages in there about checksums being incorrect - both TCP and UDP. This is for communications between this client machine (FreeBSD 7.0-Release) and any of the 8.0 machines I have. The packets going to non-8.0 machines (at least so far) appear to be fine. I'll defer to those who know more than I about the networking code, but is there perhaps an issue in general with the checksuming and not specific to one card or driver - is that even possible? That's now 4 different drivers all with various checksum problem reports. I'm going to be working on this all day today (and likely over the weekend) so if I can help by supplying information please let me know what you need.