linux-kernel - [PATCH net-next v2 19/20] net: plip: slight optimization of addr compare

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Message-ID: <52BE6D4C.5050307@huawei.com>
Date:	Sat, 28 Dec 2013 14:18:52 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next v2 19/20] net: plip: slight optimization of addr
 compare

Use possibly more efficient ether_addr_equal_64bits
to instead of memcmp.

Cc: "David S. Miller" <davem@...emloft.net>
Suggested-by: Eric Dumazet <edumazet@...gle.com>
Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
---
 drivers/net/plip/plip.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/plip/plip.c b/drivers/net/plip/plip.c
index 7b4ff35..040b897 100644
--- a/drivers/net/plip/plip.c
+++ b/drivers/net/plip/plip.c
@@ -547,9 +547,9 @@ static __be16 plip_type_trans(struct sk_buff *skb, struct net_device *dev)
 	skb_pull(skb,dev->hard_header_len);
 	eth = eth_hdr(skb);
 
-	if(*eth->h_dest&1)
+	if(is_multicast_ether_addr(eth->h_dest))
 	{
-		if(memcmp(eth->h_dest,dev->broadcast, ETH_ALEN)==0)
+		if(ether_addr_equal_64bits(eth->h_dest, dev->broadcast))
 			skb->pkt_type=PACKET_BROADCAST;
 		else
 			skb->pkt_type=PACKET_MULTICAST;
-- 
1.6.0.2



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