TOPO_NODE_ROOT
if (TOPO_NODE_ROOT & tn.tn_state) {
tn->tn_state = TOPO_NODE_ROOT | TOPO_NODE_INIT;
tn->tn_state = TOPO_NODE_ROOT | TOPO_NODE_BOUND;
if (!(node->tn_state & TOPO_NODE_ROOT)) {
(pnode->tn_state & TOPO_NODE_ROOT));
if (node->tn_state & TOPO_NODE_ROOT) {
rp->tn_state = TOPO_NODE_ROOT | TOPO_NODE_INIT;