[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>
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index cc84934..17460c8 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -71,8 +71,7 @@
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;
}
/**