linux-kernel - [PATCH v2 11/20] mac8011: slight optimization of addr compare

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Message-ID: <52B96FE7.6050602@huawei.com>
Date:	Tue, 24 Dec 2013 19:28:39 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>,
	"David S. Miller" <davem@...emloft.net>,
	<linux-wireless@...r.kernel.org>, Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 11/20] mac8011: slight optimization of addr compare

Use the possibly more efficient ether_addr_equal
to instead of memcmp.

Cc: Johannes Berg <johannes@...solutions.net>
Cc: John W. Linville <linville@...driver.com>
Cc: David Miller <davem@...emloft.net>
Cc: linux-wireless@...r.kernel.org
Cc: netdev@...r.kernel.org
Signed-off-by: Wang Weidong <wangweidong1@...wei.com>
Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
---
 net/mac80211/iface.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 7aa9f9d..a4f9812 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1497,8 +1497,8 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			bool used = false;
 
 			list_for_each_entry(sdata, &local->interfaces, list) {
-				if (memcmp(local->hw.wiphy->addresses[i].addr,
-					   sdata->vif.addr, ETH_ALEN) == 0) {
+				if (ether_addr_equal(local->hw.wiphy->addresses[i].addr,
+						     sdata->vif.addr)) {
 					used = true;
 					break;
 				}
@@ -1558,8 +1558,7 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			val += inc;
 
 			list_for_each_entry(sdata, &local->interfaces, list) {
-				if (memcmp(tmp_addr, sdata->vif.addr,
-							ETH_ALEN) == 0) {
+				if (ether_addr_equal(tmp_addr, sdata->vif.addr)) {
 					used = true;
 					break;
 				}
-- 
1.8.0



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