From: Duan Jiong Date: Sat, 8 Sep 2012 16:32:28 +0000 (+0000) Subject: etherdevice: introduce help function eth_zero_addr() X-Git-Tag: v3.7-rc1~145^2~185 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6d57e9078e880a3dd232d579f42ac437a8f1ef7b;p=platform%2Fkernel%2Flinux-3.10.git 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 Signed-off-by: David S. Miller --- diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index d426336..b006ba0 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -151,6 +151,17 @@ static inline void eth_broadcast_addr(u8 *addr) } /** + * 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 * @dev: pointer to net_device structure