netdev - [PATCH net-next v3 19/19] net: plip: slight optimization of addr compare

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Mon, 30 Dec 2013 15:41:33 +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 v3 19/19] 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



--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html