From owner-freebsd-net@FreeBSD.ORG  Wed Oct 10 20:49:42 2012
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id 4C71D593
 for <net@freebsd.org>; Wed, 10 Oct 2012 20:49:42 +0000 (UTC)
 (envelope-from gnn@neville-neil.com)
Received: from vps.hungerhost.com (vps.hungerhost.com [216.38.53.176])
 by mx1.freebsd.org (Postfix) with ESMTP id 1DDAE8FC0A
 for <net@freebsd.org>; Wed, 10 Oct 2012 20:49:41 +0000 (UTC)
Received: from [209.249.190.124] (port=58602 helo=gnnmac.hudson-trading.com)
 by vps.hungerhost.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.80)
 (envelope-from <gnn@neville-neil.com>) id 1TM3Dp-0007OQ-9B
 for net@freebsd.org; Wed, 10 Oct 2012 16:49:41 -0400
From: George Neville-Neil <gnn@neville-neil.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Subject: SFF 8472, aka what optic is plugged into my network card...
Message-Id: <D426B679-E105-4072-939C-558902A96F0A@neville-neil.com>
Date: Wed, 10 Oct 2012 16:49:40 -0400
To: net@freebsd.org
Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\))
X-Mailer: Apple Mail (2.1499)
X-AntiAbuse: This header was added to track abuse,
 please include it with any abuse report
X-AntiAbuse: Primary Hostname - vps.hungerhost.com
X-AntiAbuse: Original Domain - freebsd.org
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - neville-neil.com
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 10 Oct 2012 20:49:42 -0000

Howdy,

Modern 10G NICs have the ability to have different types of cables =
plugged into them.
There is a standard for the values contained in the cables which can be =
read here:

=
http://www.10gtek.com/templates/wzten/pdf/SFF-8472-(Diagnostic%20Monitorin=
g%20Interface).pdf

It's probably the case that several NIC cards support changeable optics =
on FreeBSD at this point.
I know that Chelsio T4 cards do.  I would like to put proper definitions =
from this document
into our source code.  Does anyone have a preference for where and how =
this is done?

I figure something like net/sff8472.h would be the way to go.

Comments?

Best,
George