From owner-freebsd-net Fri Oct 11 14:35:27 2002 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 3466237B401 for ; Fri, 11 Oct 2002 14:35:26 -0700 (PDT) Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8B8AB43E8A for ; Fri, 11 Oct 2002 14:35:25 -0700 (PDT) (envelope-from gallatin@cs.duke.edu) Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30]) by duke.cs.duke.edu (8.9.3/8.9.3) with ESMTP id RAA02339; Fri, 11 Oct 2002 17:35:25 -0400 (EDT) Received: (from gallatin@localhost) by grasshopper.cs.duke.edu (8.11.6/8.9.1) id g9BLYsE46944; Fri, 11 Oct 2002 17:34:54 -0400 (EDT) (envelope-from gallatin@cs.duke.edu) From: Andrew Gallatin MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15783.17406.914045.132169@grasshopper.cs.duke.edu> Date: Fri, 11 Oct 2002 17:34:54 -0400 (EDT) To: Hyong-Youb Kim Cc: Subject: Re: Tigon 3 bad checksums on TCP packets In-Reply-To: References: X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hyong-Youb Kim writes: > > I have been recently testing 3C996B-T board in an Athlon system. > The system has TigerMP board and a single Athlon 2000+ and runs FreeBSD > 4.7-RC. With bge driver, every thing works fine except that the NIC piles > up bad checksums on TCP receive packets. For instance, > netperf TCP_STREAM from another machine would pile up bad checksums. > What is most amazing to me is that NIC works fine with UDP receive > packets. As far as I have experienced, TCP/UDP checksumming in NIC should > have little or no difference. Too bad that the firmware is under NDA. > Which RC? Try updating to -stable (or 4.7-release) and then try applying the patch in rev 1.21 (disable memory write invalidate). http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/bge/if_bge.c.diff?r1=1.20&r2=1.21 Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message