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[ETHERNET]: Optimize is_broadcast_ether_addr 

Optimize the match for broadcast address by using bit operations instead
of comparison. This saves a number of conditional branches, and generates
smaller code.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
This commit is contained in:
Stephen Hemminger 2005-11-01 16:52:11 -08:00 committed by Arnaldo Carvalho de Melo
parent 450b5b1898
commit 2407534f8b
1 changed files with 1 additions and 2 deletions
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3
include/linux/etherdevice.h
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@ -71,8 +71,7 @@ static inline int is_multicast_ether_addr(const u8 *addr)
static inline int is_broadcast_ether_addr(const u8 *addr)
{
return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) &&
(addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
}
/**