MACVLAN_MC_FILTER_BITS  254 drivers/net/macvlan.c 	return hash_32(val, MACVLAN_MC_FILTER_BITS);
MACVLAN_MC_FILTER_BITS   16 include/linux/if_macvlan.h #define MACVLAN_MC_FILTER_SZ	(1 << MACVLAN_MC_FILTER_BITS)