From: Gary Zambrano <zambrano@broadcom.com>
Date: Tue, 28 Mar 2006 22:57:38 +0000 (-0800)
Subject: [PATCH] b44: ensure valid mac addr
X-Git-Tag: v2.6.17-rc1~152
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=391fc09a143aac08d1a3dc37b60238612b504ad3;p=linux-2.6

[PATCH] b44: ensure valid mac addr

Added code to check for invalid MAC address from eeprom or user input.

Signed-off-by: Gary Zambrano <zambrano@broadcom.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 2eab2a88c7..15032f2c78 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1339,6 +1339,9 @@ static int b44_set_mac_addr(struct net_device *dev, void *p)
 	if (netif_running(dev))
 		return -EBUSY;
 
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EINVAL;
+
 	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
 
 	spin_lock_irq(&bp->lock);
@@ -1876,6 +1879,12 @@ static int __devinit b44_get_invariants(struct b44 *bp)
 	bp->dev->dev_addr[3] = eeprom[80];
 	bp->dev->dev_addr[4] = eeprom[83];
 	bp->dev->dev_addr[5] = eeprom[82];
+
+	if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
+		printk(KERN_ERR PFX "Invalid MAC address found in EEPROM\n");
+		return -EINVAL;
+	}
+
 	memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
 
 	bp->phy_addr = eeprom[90] & 0x1f;