From owner-freebsd-net Fri Oct 11 0: 6: 6 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 C45B437B404 for ; Fri, 11 Oct 2002 00:06:05 -0700 (PDT) Received: from cs.rice.edu (cs.rice.edu [128.42.1.30]) by mx1.FreeBSD.org (Postfix) with ESMTP id AC37F43EAF for ; Fri, 11 Oct 2002 00:06:04 -0700 (PDT) (envelope-from hykim@cs.rice.edu) Received: from localhost (localhost [127.0.0.1]) by cs.rice.edu (Postfix) with ESMTP id 28B684AAB4 for ; Fri, 11 Oct 2002 02:06:04 -0500 (CDT) Received: from frosty.cs.rice.edu (frosty.cs.rice.edu [128.42.1.20]) by cs.rice.edu (Postfix) with ESMTP id 900BB4AAAE for ; Fri, 11 Oct 2002 02:06:03 -0500 (CDT) Received: from localhost (hykim@localhost) by frosty.cs.rice.edu (8.9.3+Sun/8.9.0) with ESMTP id CAA06696 for ; Fri, 11 Oct 2002 02:06:01 -0500 (CDT) X-Authentication-Warning: frosty.cs.rice.edu: hykim owned process doing -bs Date: Fri, 11 Oct 2002 02:06:01 -0500 (CDT) From: Hyong-Youb Kim To: Subject: Tigon 3 bad checksums on TCP packets Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS snapshot-20020300 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 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. I am wondering if any one had this problem. Any help will be greatly appreciated. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message