From owner-freebsd-net@FreeBSD.ORG  Sat Jul 23 00:39:40 2005
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: freebsd-net@freebsd.org
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 4EBFF16A41F;
	Sat, 23 Jul 2005 00:39:40 +0000 (GMT)
	(envelope-from rwatson@FreeBSD.org)
Received: from cyrus.watson.org (cyrus.watson.org [204.156.12.53])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 06F6043D48;
	Sat, 23 Jul 2005 00:39:40 +0000 (GMT)
	(envelope-from rwatson@FreeBSD.org)
Received: from fledge.watson.org (fledge.watson.org [204.156.12.50])
	by cyrus.watson.org (Postfix) with ESMTP id 996C546B4F;
	Fri, 22 Jul 2005 20:39:39 -0400 (EDT)
Date: Sat, 23 Jul 2005 01:40:20 +0100 (BST)
From: Robert Watson <rwatson@FreeBSD.org>
X-X-Sender: robert@fledge.watson.org
To: Ed Maste <emaste@phaedrus.sandvine.ca>
In-Reply-To: <20050723012046.K40216@fledge.watson.org>
Message-ID: <20050723013902.L40216@fledge.watson.org>
References: <42CEF0EB.4000107@borderware.com> <42D006DB.8080108@errno.com>
	<20050712150224.GA38249@sandvine.com>
	<20050712162332.Q79478@fledge.watson.org>
	<20050712220452.GB38249@sandvine.com>
	<20050723012046.K40216@fledge.watson.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: freebsd-net@freebsd.org, gnn@FreeBSD.org
Subject: Re: what to replace splnet in FreeBSD 5.x?
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Sat, 23 Jul 2005 00:39:40 -0000


On Sat, 23 Jul 2005, Robert Watson wrote:

> The attached patch introduces locking around the link layer and IPv4 
> multicast address lists, as well as updates drivers to use the locking. 
> It's a fairly large diff, but other than the changes to if.c, in.c, and 
> igmp.c, is fairly mechanical.  It may well correct the problem you've 
> been seeing.  If possible, and given sufficient review, I'd like to get 
> this change into 6.0, especially given that it affects the layout of 
> struct ifnet which is part of the ABI for network interface device 
> drivers.

Updated version of the patch at:

     http://www.watson.org/~robert/freebsd/netperf/20050523-multicast.diff

Spl-related cleanups (no longer useful documentation of old 
synchronization in many places), lock order hard-coded into WITNESS order 
rather than dynamically detected.

Robert N M Watson