From owner-svn-src-user@FreeBSD.ORG  Tue Dec 22 15:45:39 2009
Return-Path: <owner-svn-src-user@FreeBSD.ORG>
Delivered-To: svn-src-user@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1790310656A6;
	Tue, 22 Dec 2009 15:45:39 +0000 (UTC)
	(envelope-from luigi@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 071BB8FC16;
	Tue, 22 Dec 2009 15:45:39 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id nBMFjcsk068404;
	Tue, 22 Dec 2009 15:45:38 GMT (envelope-from luigi@svn.freebsd.org)
Received: (from luigi@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id nBMFjcKj068402;
	Tue, 22 Dec 2009 15:45:38 GMT (envelope-from luigi@svn.freebsd.org)
Message-Id: <200912221545.nBMFjcKj068402@svn.freebsd.org>
From: Luigi Rizzo <luigi@FreeBSD.org>
Date: Tue, 22 Dec 2009 15:45:38 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-user@freebsd.org
X-SVN-Group: user
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r200846 - user/luigi/ipfw3-head/sys/netinet/ipfw
X-BeenThere: svn-src-user@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the experimental &quot; user&quot;
	src tree" <svn-src-user.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-user>,
	<mailto:svn-src-user-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-user>
List-Post: <mailto:svn-src-user@freebsd.org>
List-Help: <mailto:svn-src-user-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-user>,
	<mailto:svn-src-user-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Dec 2009 15:45:39 -0000

Author: luigi
Date: Tue Dec 22 15:45:38 2009
New Revision: 200846
URL: http://svn.freebsd.org/changeset/base/200846

Log:
  add a comment on locking

Modified:
  user/luigi/ipfw3-head/sys/netinet/ipfw/ip_fw_table.c

Modified: user/luigi/ipfw3-head/sys/netinet/ipfw/ip_fw_table.c
==============================================================================
--- user/luigi/ipfw3-head/sys/netinet/ipfw/ip_fw_table.c	Tue Dec 22 15:41:58 2009	(r200845)
+++ user/luigi/ipfw3-head/sys/netinet/ipfw/ip_fw_table.c	Tue Dec 22 15:45:38 2009	(r200846)
@@ -34,6 +34,9 @@ __FBSDID("$FreeBSD$");
  * keys are network prefixes (addr/masklen), and values are integers.
  * As a degenerate case we can interpret keys as 32-bit integers
  * (with a /32 mask).
+ *
+ * The table is protected by the IPFW lock even for manipulation coming
+ * from userland, because operations are typically fast.
  */
 
 #if !defined(KLD_MODULE)