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etherdevice: introduce eth_broadcast_addr

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

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johannes Berg 2012-07-10 06:18:44 +00:00 committed by David S. Miller
parent e044a651b9
commit ad7eee98be
1 changed files with 11 additions and 0 deletions
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11
include/linux/etherdevice.h
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@ -137,6 +137,17 @@ static inline void random_ether_addr(u8 *addr)
addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
}
/**
* eth_broadcast_addr - Assign broadcast address
* @addr: Pointer to a six-byte array containing the Ethernet address
*
* Assign the broadcast address to the given address array.
*/
static inline void eth_broadcast_addr(u8 *addr)
{
memset(addr, 0xff, ETH_ALEN);
}
/**
* eth_hw_addr_random - Generate software assigned random Ethernet and
* set device flag