linux-kernel - [PATCH 09/12] wan/lapbether: check given MAC address, if invalid return -EADDRNOTAVAIL

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Message-Id: <1330099282-4588-10-git-send-email-danny.kukawka@bisect.de>
Date:	Fri, 24 Feb 2012 17:01:19 +0100
From:	Danny Kukawka <danny.kukawka@...ect.de>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Danny Kukawka <dkukawka@...e.de>,
	Stephen Hemminger <shemminger@...tta.com>,
	Jiri Pirko <jpirko@...hat.com>, Joe Perches <joe@...ches.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 09/12] wan/lapbether: check given MAC address, if invalid return -EADDRNOTAVAIL

Check if given address is valid in .ndo_set_mac_address/
lapbeth_set_mac_address(), if invalid return -EADDRNOTAVAIL as
eth_mac_addr() already does if is_valid_ether_addr() fails.

Signed-off-by: Danny Kukawka <danny.kukawka@...ect.de>
---
 drivers/net/wan/lapbether.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/net/wan/lapbether.c b/drivers/net/wan/lapbether.c
index 7beeb9b..b6d4cbc 100644
--- a/drivers/net/wan/lapbether.c
+++ b/drivers/net/wan/lapbether.c
@@ -45,6 +45,7 @@
 #include <linux/module.h>
 #include <linux/lapb.h>
 #include <linux/init.h>
+#include <linux/etherdevice.h>
 
 #include <net/x25device.h>
 
@@ -254,6 +255,10 @@ static void lapbeth_disconnected(struct net_device *dev, int reason)
 static int lapbeth_set_mac_address(struct net_device *dev, void *addr)
 {
 	struct sockaddr *sa = addr;
+
+	if (!is_valid_ether_addr(sa->sa_data))
+		return -EADDRNOTAVAIL;
+
 	memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
 	return 0;
 }
-- 
1.7.8.3

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