linux-kernel - [PATCH 12/21] bridge: slight optimization of addr compare

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Message-ID: <52B7C5D5.2040202@huawei.com>
Date:	Mon, 23 Dec 2013 13:10:45 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Stephen Hemminger <stephen@...workplumber.org>,
	"David S. Miller" <davem@...emloft.net>,
	<bridge@...ts.linux-foundation.org>,
	Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 12/21] bridge: slight optimization of addr compare

Use the recently added and possibly more efficient
ether_addr_equal_unaligned to instead of memcmp.

Cc: Stephen Hemminger <stephen@...workplumber.org>
Cc: David Miller <davem@...emloft.net>
Cc: bridge@...ts.linux-foundation.org
Cc: netdev@...r.kernel.org
Signed-off-by: Wang Weidong <wangweidong1@...wei.com>
Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
---
 net/bridge/br_stp_if.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 656a6f3..04217d1 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -229,7 +229,7 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
 
 	list_for_each_entry(p, &br->port_list, list) {
 		if (addr == br_mac_zero ||
-		    memcmp(p->dev->dev_addr, addr, ETH_ALEN) < 0)
+		    !ether_addr_equal_unaligned(p->dev->dev_addr, addr) < 0)
 			addr = p->dev->dev_addr;
 
 	}
-- 
1.8.0


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