topo_digraph_paths
extern int topo_digraph_paths(topo_hdl_t *, topo_digraph_t *,
if (topo_digraph_paths(thp, tdg, vertices[0], vertices[4], &paths,
if (topo_digraph_paths(thp, tdg, vertices[6], vertices[4], &paths,
if (topo_digraph_paths(thp, tdg, vertices[5], vertices[1], &paths,