X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fnet.py;h=47b4a7ef99093745162b4b50c2c28d9043f30c1e;hb=9315da41a33ef046bc82a589028e8bd471e75200;hp=96fda6b896f895f61c05b453dd311f52d8902acd;hpb=c114902cac2a2e114474ce337f5a73d0c538ebde;p=osm%2Fvim-emu.git diff --git a/src/emuvim/dcemulator/net.py b/src/emuvim/dcemulator/net.py index 96fda6b..47b4a7e 100755 --- a/src/emuvim/dcemulator/net.py +++ b/src/emuvim/dcemulator/net.py @@ -185,30 +185,99 @@ class DCNetwork(Dockernet): # to remove chain do setChain( src, dst, cmd='del-flows') def setChain(self, vnf_src_name, vnf_dst_name, cmd='add-flow'): + + #check if port is specified (vnf:port) + try: + vnf_source_interface = vnf_src_name.split(':')[1] + except: + # take first interface by default + connected_sw = self.DCNetwork_graph.neighbors(vnf_src_name)[0] + link_dict = self.DCNetwork_graph[vnf_src_name][connected_sw] + vnf_source_interface = link_dict[0]['src_port_id'] + #vnf_source_interface = 0 + + vnf_src_name = vnf_src_name.split(':')[0] + for connected_sw in self.DCNetwork_graph.neighbors(vnf_src_name): + link_dict = self.DCNetwork_graph[vnf_src_name][connected_sw] + for link in link_dict: + #logging.info("{0},{1}".format(link_dict[link],vnf_source_interface)) + if link_dict[link]['src_port_id'] == vnf_source_interface: + # found the right link and connected switch + #logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface)) + src_sw = connected_sw + + src_sw_inport = link_dict[link]['dst_port'] + break + + try: + vnf_dest_interface = vnf_dst_name.split(':')[1] + except: + # take first interface by default + connected_sw = self.DCNetwork_graph.neighbors(vnf_dst_name)[0] + link_dict = self.DCNetwork_graph[connected_sw][vnf_dst_name] + vnf_dest_interface = link_dict[0]['dst_port_id'] + #vnf_dest_interface = 0 + + vnf_dst_name = vnf_dst_name.split(':')[0] + for connected_sw in self.DCNetwork_graph.neighbors(vnf_dst_name): + link_dict = self.DCNetwork_graph[connected_sw][vnf_dst_name] + for link in link_dict: + if link_dict[link]['dst_port_id'] == vnf_dest_interface: + # found the right link and connected switch + dst_sw = connected_sw + dst_sw_outport = link_dict[link]['src_port'] + break + + # get shortest path - path = nx.shortest_path(self.DCNetwork_graph, vnf_src_name, vnf_dst_name) + #path = nx.shortest_path(self.DCNetwork_graph, vnf_src_name, vnf_dst_name) + try: + path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw) + except: + logging.info("No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name)) + return "No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name) + logging.info("Path between {0} and {1}: {2}".format(vnf_src_name, vnf_dst_name, path)) - current_hop = vnf_src_name + #current_hop = vnf_src_name + current_hop = src_sw + switch_inport = src_sw_inport + for i in range(0,len(path)): - next_hop = path[path.index(current_hop)+1] + current_node = self.getNodeByName(current_hop) + if path.index(current_hop) < len(path)-1: + next_hop = path[path.index(current_hop)+1] + else: + #last switch reached + next_hop = vnf_dst_name + next_node = self.getNodeByName(next_hop) if next_hop == vnf_dst_name: - return "path added between {0} and {1}".format(vnf_src_name, vnf_dst_name) + switch_outport = dst_sw_outport + logging.info("end node reached: {0}".format(vnf_dst_name)) elif not isinstance( next_node, OVSSwitch ): logging.info("Next node: {0} is not a switch".format(next_hop)) return "Next node: {0} is not a switch".format(next_hop) + else: + index_edge_out = 0 + switch_outport = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['src_port'] + + # take into account that multiple edges are possible between 2 nodes + index_edge_in = 0 + + #switch_inport = self.DCNetwork_graph[current_hop][next_hop][index_edge_in]['dst_port'] - switch_inport = self.DCNetwork_graph[current_hop][next_hop]['dst_port'] - next2_hop = path[path.index(current_hop)+2] - switch_outport = self.DCNetwork_graph[next_hop][next2_hop]['src_port'] + #next2_hop = path[path.index(current_hop)+2] + #index_edge_out = 0 + #switch_outport = self.DCNetwork_graph[next_hop][next2_hop][index_edge_out]['src_port'] + #switch_outport = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['src_port'] - logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(next_node.name, switch_inport, switch_outport)) + #logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport, switch_outport)) # set of entry via ovs-ofctl # TODO use rest API of ryu to set flow entries to correct witch dpid - if isinstance( next_node, OVSSwitch ): + if isinstance( current_node, OVSSwitch ): match = 'in_port=%s' % switch_inport if cmd=='add-flow': @@ -220,11 +289,15 @@ class DCNetwork(Dockernet): else: ofcmd='' - next_node.dpctl(cmd, ofcmd) + current_node.dpctl(cmd, ofcmd) + logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport, + switch_outport)) + switch_inport = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['dst_port'] current_hop = next_hop - return "destination node: {0} not reached".format(vnf_dst_name) + return "path added between {0} and {1}".format(vnf_src_name, vnf_dst_name) + #return "destination node: {0} not reached".format(vnf_dst_name) # start Ryu Openflow controller as Remote Controller for the DCNetwork def startRyu(self): @@ -239,6 +312,8 @@ class DCNetwork(Dockernet): ryu_cmd = 'ryu-manager' FNULL = open("/tmp/ryu.log", 'w') self.ryu_process = Popen([ryu_cmd, ryu_path, ryu_path2, ryu_option, ryu_of_port], stdout=FNULL, stderr=FNULL) + # no learning switch + #self.ryu_process = Popen([ryu_cmd, ryu_path2, ryu_option, ryu_of_port], stdout=FNULL, stderr=FNULL) time.sleep(1) def stopRyu(self):