From owner-cvs-src@FreeBSD.ORG  Mon Jan 30 10:52:00 2006
Return-Path: <owner-cvs-src@FreeBSD.ORG>
X-Original-To: cvs-src@FreeBSD.org
Delivered-To: cvs-src@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A7D3516A424
	for <cvs-src@FreeBSD.org>; Mon, 30 Jan 2006 10:52:00 +0000 (GMT)
	(envelope-from andre@freebsd.org)
Received: from c00l3r.networx.ch (c00l3r.networx.ch [62.48.2.2])
	by mx1.FreeBSD.org (Postfix) with ESMTP id BAB4843D5A
	for <cvs-src@FreeBSD.org>; Mon, 30 Jan 2006 10:51:58 +0000 (GMT)
	(envelope-from andre@freebsd.org)
Received: (qmail 53086 invoked from network); 30 Jan 2006 10:51:12 -0000
Received: from c00l3r.networx.ch (HELO freebsd.org) ([62.48.2.2])
	(envelope-sender <andre@freebsd.org>)
	by c00l3r.networx.ch (qmail-ldap-1.03) with SMTP
	for <glebius@FreeBSD.org>; 30 Jan 2006 10:51:12 -0000
Message-ID: <43DDEFDF.7EB5CB65@freebsd.org>
Date: Mon, 30 Jan 2006 11:52:15 +0100
From: Andre Oppermann <andre@freebsd.org>
X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
To: Gleb Smirnoff <glebius@FreeBSD.org>
References: <200601300839.k0U8dAVt064693@repoman.freebsd.org>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/net if_gif.c if_gif.h src/sys/netinet 
 in_gif.csrc/sys/netinet6 in6_gif.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 30 Jan 2006 10:52:00 -0000

Gleb Smirnoff wrote:
> 
> glebius     2006-01-30 08:39:09 UTC
> 
>   FreeBSD src repository
> 
>   Modified files:
>     sys/net              if_gif.c if_gif.h
>     sys/netinet          in_gif.c
>     sys/netinet6         in6_gif.c
>   Log:
>   Add some initial locking to gif(4). It doesn't covers the whole driver,
>   however IPv4-in-IPv4 tunnels are now stable on SMP. Details:
> 
>   - Add per-softc mutex.
>   - Hold the mutex on output.
> 
>   The main problem was the rtentry, placed in softc. It could be
>   freed by ip_output(). Meanwhile, another thread being in
>   in_gif_output() can read and write this rtentry.

Caching the rtentry in gif(4) is evil anyway.  Just get rid of it(tm).

-- 
Andre