linux-kernel - [PATCH net-next] tipc: Use is_broadcast_ether

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Message-ID: <20200803020055.26822-1-huangguobin4@huawei.com>
Date:   Sun, 2 Aug 2020 22:00:55 -0400
From:   Huang Guobin <huangguobin4@...wei.com>
To:     <jmaloy@...hat.com>, <ying.xue@...driver.com>,
        <davem@...emloft.net>, <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <tipc-discussion@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH net-next] tipc: Use is_broadcast_ether_addr() instead of memcmp()

Using is_broadcast_ether_addr() instead of directly use
memcmp() to determine if the ethernet address is broadcast
address.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Huang Guobin <huangguobin4@...wei.com>
---
 net/tipc/eth_media.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 8b0bb600602d..c68019697cfe 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -62,12 +62,10 @@ static int tipc_eth_raw2addr(struct tipc_bearer *b,
 			     struct tipc_media_addr *addr,
 			     char *msg)
 {
-	char bcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-
 	memset(addr, 0, sizeof(*addr));
 	ether_addr_copy(addr->value, msg);
 	addr->media_id = TIPC_MEDIA_TYPE_ETH;
-	addr->broadcast = !memcmp(addr->value, bcast_mac, ETH_ALEN);
+	addr->broadcast = is_broadcast_ether_addr(addr->value);
 	return 0;
 }
 
-- 
2.17.1