From owner-freebsd-net Fri Jul 12 10:43:36 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 C635A37B400 for ; Fri, 12 Jul 2002 10:43:33 -0700 (PDT) Received: from iguana.icir.org (iguana.icir.org [192.150.187.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7C0A643E65 for ; Fri, 12 Jul 2002 10:43:33 -0700 (PDT) (envelope-from rizzo@iguana.icir.org) Received: (from rizzo@localhost) by iguana.icir.org (8.11.6/8.11.3) id g6CHhOJ54643; Fri, 12 Jul 2002 10:43:24 -0700 (PDT) (envelope-from rizzo) Date: Fri, 12 Jul 2002 10:43:24 -0700 From: Luigi Rizzo To: Jonathan Lemon Cc: "Cambria, Mike" , cambria@world.std.com, net@FreeBSD.ORG Subject: Re: xl checksum and dsniff Message-ID: <20020712104324.A54624@iguana.icir.org> References: <3A6D367EA1EFD4118C9B00A0C9DD99D7065A34@rerun.avayactc.com> <20020712120048.B8927@prism.flugsvamp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020712120048.B8927@prism.flugsvamp.com>; from jlemon@flugsvamp.com on Fri, Jul 12, 2002 at 12:00:48PM -0500 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 Actually, I seem to remember that the ifconfig output only shows the driver's capabilities, not the actual setting. cheers luigi On Fri, Jul 12, 2002 at 12:00:48PM -0500, Jonathan Lemon wrote: > > On Fri, Jul 12, 2002 at 09:06:13AM -0400, Cambria, Mike wrote: > > > -----Original Message----- > > > From: Jonathan Lemon [mailto:jlemon@flugsvamp.com] > > >> > > > > >My guess is that doing hw checksum by the nic could be the > > > issue. This is > > > >the only real difference I can see at present. > > > > > > > >Any ideas? > > > > > > Test your theory. Turn off hardware checksums with 'ifconfig > > > xl0 -txcsum' > > > > When I do 'ifconfig xl0 -txcsum', a subsequent 'ifconfig' reads as if the > > command had no effect. In other words, ifconfig shows > > options=3 still. > > Oh, hmm. It appears that this driver doesn't support disabling checksums. > For the time being, you can recompile the driver, and manually disable the > checksums by editing the define at the top of the file: > > #define XL905B_CSUM_FEATURES 0 > -- > Jonathan > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-net" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message