fwd.py 文件源码

def get_nx_graph(self):
        graph = nx.DiGraph()
        switches = topo_api.get_all_switch(self)
        links = topo_api.get_all_link(self)

        for switch in switches:
            dpid = switch.dp.id
            graph.add_node(dpid)

        for link in links:
            src_dpid = link.src.dpid
            dst_dpid = link.dst.dpid
            src_port = link.src.port_no
            dst_port = link.dst.port_no
            graph.add_edge(src_dpid,
                           dst_dpid,
                           src_port=src_port,
                           dst_port=dst_port)
        return graph