From owner-freebsd-hackers Tue Mar 31 09:25:53 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id JAA27119 for freebsd-hackers-outgoing; Tue, 31 Mar 1998 09:25:53 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from terra.Sarnoff.COM (terra.sarnoff.com [130.33.11.203]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id JAA27051 for ; Tue, 31 Mar 1998 09:25:42 -0800 (PST) (envelope-from rminnich@Sarnoff.COM) Received: (from rminnich@localhost) by terra.Sarnoff.COM (8.6.12/8.6.12) id MAA10159; Tue, 31 Mar 1998 12:25:05 -0500 Date: Tue, 31 Mar 1998 12:25:05 -0500 (EST) From: "Ron G. Minnich" X-Sender: rminnich@terra To: freebsd-hackers@FreeBSD.ORG Subject: Re: Virtual Interface Architecture In-Reply-To: <19980331185545.KC05138@mars.hsc.fr> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG The interesting thing is: you're going to need a scope or logic analyzer. Here's how you can do it though. you need an mmap'able device. Map the device in. Have your program write to the device memory and then call the send() system call. You also need the scope on your ethernet. Watch for the bits to appear. Measure time difference. It's a bit difficult to set up, but worth it. ron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message