etherdevice: introduce help function eth_zero_addr()

[pandora-kernel.git] / include / linux / etherdevice.h

diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 05955cf..4d29153 100644 (file)
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -139,6 +139,17 @@ static inline void random_ether_addr(u8 *addr)
        addr [0] |= 0x02;       /* set local assignment bit (IEEE802) */
 }
 
+/**
+ * eth_zero_addr - Assign zero address
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Assign the zero address to the given address array.
+ */
+static inline void eth_zero_addr(u8 *addr)
+{
+       memset(addr, 0x00, ETH_ALEN);
+}
+
 /**
  * dev_hw_addr_random - Create random MAC and set device flag
  * @dev: pointer to net_device structure