TIPC_CLUSTER_OFFSET
#define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
#define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
(cluster << TIPC_CLUSTER_OFFSET) |
return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;