BR_MULTICAST_TO_UNICAST_BIT
#define BR_MULTICAST_TO_UNICAST BIT(BR_MULTICAST_TO_UNICAST_BIT)
if (test_bit(BR_MULTICAST_TO_UNICAST_BIT,
if (!test_bit(BR_MULTICAST_TO_UNICAST_BIT, &port->flags))
BRPORT_ATTR_FLAG(multicast_to_unicast, BR_MULTICAST_TO_UNICAST_BIT);