From owner-svn-src-all@FreeBSD.ORG  Fri Jan  3 12:06:55 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 34391328;
 Fri,  3 Jan 2014 12:06:55 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 1FFE51604;
 Fri,  3 Jan 2014 12:06:55 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id s03C6si7036174;
 Fri, 3 Jan 2014 12:06:54 GMT (envelope-from glebius@svn.freebsd.org)
Received: (from glebius@localhost)
 by svn.freebsd.org (8.14.7/8.14.7/Submit) id s03C6sxo036173;
 Fri, 3 Jan 2014 12:06:54 GMT (envelope-from glebius@svn.freebsd.org)
Message-Id: <201401031206.s03C6sxo036173@svn.freebsd.org>
From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Fri, 3 Jan 2014 12:06:54 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r260225 - head/sys/netgraph
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 03 Jan 2014 12:06:55 -0000

Author: glebius
Date: Fri Jan  3 12:06:54 2014
New Revision: 260225
URL: http://svnweb.freebsd.org/changeset/base/260225

Log:
  Fix circular math macro.
  
  Submitted by:		Lutz Donnerhacke via Dmitry Luhtionov
  German lesson at:	http://lutz.donnerhacke.de/Blog/Der-Fluch-der-Stabilitaet
  PR:			146082

Modified:
  head/sys/netgraph/ng_l2tp.c

Modified: head/sys/netgraph/ng_l2tp.c
==============================================================================
--- head/sys/netgraph/ng_l2tp.c	Fri Jan  3 11:03:12 2014	(r260224)
+++ head/sys/netgraph/ng_l2tp.c	Fri Jan  3 12:06:54 2014	(r260225)
@@ -98,7 +98,7 @@ static MALLOC_DEFINE(M_NETGRAPH_L2TP, "n
 #define L2TP_ENABLE_DSEQ	1			/* enable data seq # */
 
 /* Compare sequence numbers using circular math */
-#define L2TP_SEQ_DIFF(x, y)	((int)((int16_t)(x) - (int16_t)(y)))
+#define L2TP_SEQ_DIFF(x, y)	((int16_t)((x) - (y)))
 
 #define SESSHASHSIZE		0x0020
 #define SESSHASH(x)		(((x) ^ ((x) >> 8)) & (SESSHASHSIZE - 1))