From owner-svn-src-head@FreeBSD.ORG  Sun Feb 28 18:06:55 2010
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 08B22106566C;
	Sun, 28 Feb 2010 18:06:55 +0000 (UTC)
	(envelope-from ticso@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id EC4098FC1E;
	Sun, 28 Feb 2010 18:06:54 +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 o1SI6sqY052706;
	Sun, 28 Feb 2010 18:06:54 GMT (envelope-from ticso@svn.freebsd.org)
Received: (from ticso@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o1SI6sGl052704;
	Sun, 28 Feb 2010 18:06:54 GMT (envelope-from ticso@svn.freebsd.org)
Message-Id: <201002281806.o1SI6sGl052704@svn.freebsd.org>
From: Bernd Walter <ticso@FreeBSD.org>
Date: Sun, 28 Feb 2010 18:06:54 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r204476 - head/sys/arm/at91
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 28 Feb 2010 18:06:55 -0000

Author: ticso
Date: Sun Feb 28 18:06:54 2010
New Revision: 204476
URL: http://svn.freebsd.org/changeset/base/204476

Log:
  simplify hash calculation

Modified:
  head/sys/arm/at91/if_ate.c

Modified: head/sys/arm/at91/if_ate.c
==============================================================================
--- head/sys/arm/at91/if_ate.c	Sun Feb 28 17:19:22 2010	(r204475)
+++ head/sys/arm/at91/if_ate.c	Sun Feb 28 18:06:54 2010	(r204476)
@@ -384,12 +384,8 @@ static uint32_t
 ate_mac_hash(const uint8_t *buf)
 {
 	uint32_t index = 0;
-	uint8_t bit;
-	uint8_t bitshift;
 	for (int i = 0; i < 48; i++) {
-		bit = i / 6;
-		bitshift =  i - bit * 6;
-		index ^= ((buf[i >> 3] >> (i & 7)) & 1) << bitshift;
+		index ^= ((buf[i >> 3] >> (i & 7)) & 1) << (i % 6);
 	}
 	return (index);
 }