From owner-freebsd-hackers Mon May 13 12: 1:36 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 5F44A37B404 for ; Mon, 13 May 2002 12:01:31 -0700 (PDT) Received: from apollo.backplane.com (localhost [127.0.0.1]) by apollo.backplane.com (8.12.3/8.9.1) with ESMTP id g4DJ1VhU069605; Mon, 13 May 2002 12:01:31 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.12.3/8.12.3/Submit) id g4DJ1U8s069604; Mon, 13 May 2002 12:01:30 -0700 (PDT) Date: Mon, 13 May 2002 12:01:30 -0700 (PDT) From: Matthew Dillon Message-Id: <200205131901.g4DJ1U8s069604@apollo.backplane.com> To: Terry Lambert Cc: David Greenman-Lawrence , jamie@tridentmicrosystems.co.uk, freebsd-hackers@FreeBSD.ORG Subject: Re: Broadcom BCM5701 Chipset problems References: <20020513115600.A50967@mufuf.trident-uk.co.uk> <3CDFF60C.48A2EA65@mindspring.com> <20020513102526.H72322@nexus.root.com> <200205131758.g4DHwJFj068941@apollo.backplane.com> <3CE00B14.E8CA43A8@mindspring.com> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG :This is depressing. : :The Dell PowerEdge 2550's use the BGE driver (Tigon III). I'm really :surprised that the problem exists on the Tigon III. My personal :experience with Tigon III's was that the hardware checksumming was :working. Maybe my testing was too lax. 8-(. Yup. Of course I am completely Jaded now after listening to B.P. curse the chipset while he was debugging it :-) :My local copy of the -STABLE source tree leaves BGE_CSUM_FEATURES set :on in the driver; is there a change that needs to be MFC'ed to turn :these suckers off? :... :There's no similar comment in the if_bge.c ... : Well, that entire section of code is #if 0'd out in -stable's BGE driver (/usr/src/sys/dev/bge/if_bge.c line 1981). The comment reads: #if 0 /* currently broken for some packets, possibly related to TCP options */ So even with BGE_CSUM_FEATURES set, it should all be turned off now. This change was made on 14-December-01 by DG. Anyone with an earlier driver may be running with checksums enabled. :Can you guys elaborate on the problem? Was it on incoming checksums, :outgoing checksums, or both? :... :Thanks, :-- Terry It was on incoming checksums I believe. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message