Commit 6d57e907 authored Sep 08, 2012 by Duan Jiong Committed by David S. Miller Sep 10, 2012

etherdevice: introduce help function eth_zero_addr()



a lot of code has either the memset or an inefficient copy
from a static array that contains the all-zeros Ethernet address.
Introduce help function eth_zero_addr() to fill an address with
all zeros, making the code clearer and allowing us to get rid of
some constant arrays.

Signed-off-by: Duan Jiong <djduanjiong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 82346a7b

include/linux/etherdevice.h

+11 −0

Original line number	Diff line number	Diff line
		@@ -150,6 +150,17 @@ static inline void eth_broadcast_addr(u8 *addr)
		memset(addr, 0xff, ETH_ALEN);
		}

		/**
		* 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);
		}

		/**
		* eth_hw_addr_random - Generate software assigned random Ethernet and
		* set device flag