X-Git-Url: https://osm.etsi.org/gitweb/?p=osm%2Fvim-emu.git;a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fnet.py;h=1a8d938d80ad55d3e9af5a5e6478d63c83906d7b;hp=731331b259cb74d80ecb53bc1f1c9a1927e3f1df;hb=8f2063d50f6d8520ca5f960c65e5eed2c5cd7bee;hpb=dd26b9ea716ca0eee703aee695d84c0625bd8d8d diff --git a/src/emuvim/dcemulator/net.py b/src/emuvim/dcemulator/net.py index 731331b..1a8d938 100755 --- a/src/emuvim/dcemulator/net.py +++ b/src/emuvim/dcemulator/net.py @@ -47,6 +47,9 @@ from emuvim.dcemulator.resourcemodel import ResourceModelRegistrar LOG = logging.getLogger("dcemulator.net") LOG.setLevel(logging.DEBUG) +# default CPU period used for cpu percentage-based cfs values (microseconds) +CPU_PERIOD = 1000000 + class DCNetwork(Containernet): """ Wraps the original Mininet/Containernet class and provides @@ -56,7 +59,7 @@ class DCNetwork(Containernet): """ def __init__(self, controller=RemoteController, monitor=False, - enable_learning=False, # learning switch behavior of the default ovs switches icw Ryu controller can be turned off/on, neede for E-LAN functionality + enable_learning=False, # learning switch behavior of the default ovs switches icw Ryu controller can be turned off/on, needed for E-LAN functionality dc_emulation_max_cpu=1.0, # fraction of overall CPU time for emulation dc_emulation_max_mem=512, # emulation max mem in MB **kwargs): @@ -121,6 +124,7 @@ class DCNetwork(Containernet): # initialize resource model registrar self.rm_registrar = ResourceModelRegistrar( dc_emulation_max_cpu, dc_emulation_max_mem) + self.cpu_period = CPU_PERIOD def addDatacenter(self, label, metadata={}, resource_log_path=None): """ @@ -198,7 +202,7 @@ class DCNetwork(Containernet): edge_attributes = [p for p in params if p in weight_metrics] for attr in edge_attributes: # if delay: strip ms (need number as weight in graph) - match = re.search('([0-9]*\.?[0-9]+)', params[attr]) + match = re.search('([0-9]*\.?[0-9]+)', str(params[attr])) if match: attr_number = match.group(1) else: @@ -338,6 +342,17 @@ class DCNetwork(Containernet): def _addMonitorFlow(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None, tag=None, **kwargs): + """ + Add a monitoring flow entry that adds a special flowentry/counter at the begin or end of a chain. + So this monitoring flowrule exists on top of a previously defined chain rule and uses the same vlan tag/routing. + :param vnf_src_name: + :param vnf_dst_name: + :param vnf_src_interface: + :param vnf_dst_interface: + :param tag: vlan tag to be used for this chain (same tag as existing chain) + :param monitor_placement: 'tx' or 'rx' indicating to place the extra flowentry resp. at the beginning or end of the chain + :return: + """ src_sw = None src_sw_inport_nr = 0 @@ -442,7 +457,7 @@ class DCNetwork(Containernet): kwargs['switch_outport_name'] = dst_sw_outport_name kwargs['skip_vlan_tag'] = True - monitor_placement = kwargs.get('monitor_placement') + monitor_placement = kwargs.get('monitor_placement').strip() # put monitor flow at the dst switch insert_flow = False if monitor_placement == 'tx' and path.index(current_hop) == 0: # first node: @@ -450,7 +465,7 @@ class DCNetwork(Containernet): # put monitoring flow at the src switch elif monitor_placement == 'rx' and path.index(current_hop) == len(path) - 1: # last node: insert_flow = True - else: + elif monitor_placement not in ['rx', 'tx']: LOG.exception('invalid monitor command: {0}'.format(monitor_placement)) @@ -485,6 +500,12 @@ class DCNetwork(Containernet): :param cookie: cookie for the installed flowrules (can be used later as identifier for a set of installed chains) :param match: custom match entry to be added to the flowrules (default: only in_port and vlan tag) :param priority: custom flowrule priority +<<<<<<< HEAD + :param monitor: boolean to indicate whether this chain is a monitoring chain + :param tag: vlan tag to be used for this chain (pre-defined or new one if none is specified) +======= + :param path: custom path between the two VNFs (list of switches) +>>>>>>> upstream/master :return: output log string """ @@ -507,7 +528,7 @@ class DCNetwork(Containernet): return ret else: # no chain existing (or E-LAN) -> install normal chain - LOG.warning('*** installing monitoring chain without pre-defined chain from {0}:{1} -> {2}:{3}'. + LOG.warning('*** installing monitoring chain without pre-defined NSD chain from {0}:{1} -> {2}:{3}'. format(vnf_src_name, vnf_src_interface, vnf_dst_name, vnf_dst_interface)) pass @@ -516,6 +537,8 @@ class DCNetwork(Containernet): if cmd == 'add-flow' or cmd == 'del-flows': ret = self._chainAddFlow(vnf_src_name, vnf_dst_name, vnf_src_interface, vnf_dst_interface, **kwargs) if kwargs.get('bidirectional'): + if kwargs.get('path') is not None: + kwargs['path'] = list(reversed(kwargs.get('path'))) ret = ret +'\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs) else: @@ -572,20 +595,21 @@ class DCNetwork(Containernet): dst_sw_outport_name = link_dict[link]['src_port_name'] break - - # get shortest path - try: - # returns the first found shortest path - # if all shortest paths are wanted, use: all_shortest_paths - path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw, weight=kwargs.get('weight')) - except: - LOG.exception("No path could be found between {0} and {1} using src_sw={2} and dst_sw={3}".format( - vnf_src_name, vnf_dst_name, src_sw, dst_sw)) - LOG.debug("Graph nodes: %r" % self.DCNetwork_graph.nodes()) - LOG.debug("Graph edges: %r" % self.DCNetwork_graph.edges()) - for e, v in self.DCNetwork_graph.edges(): - LOG.debug("%r" % self.DCNetwork_graph[e][v]) - return "No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name) + path = kwargs.get('path') + if path is None: + # get shortest path + try: + # returns the first found shortest path + # if all shortest paths are wanted, use: all_shortest_paths + path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw, weight=kwargs.get('weight')) + except: + LOG.exception("No path could be found between {0} and {1} using src_sw={2} and dst_sw={3}".format( + vnf_src_name, vnf_dst_name, src_sw, dst_sw)) + LOG.debug("Graph nodes: %r" % self.DCNetwork_graph.nodes()) + LOG.debug("Graph edges: %r" % self.DCNetwork_graph.edges()) + for e, v in self.DCNetwork_graph.edges(): + LOG.debug("%r" % self.DCNetwork_graph[e][v]) + return "No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name) LOG.info("Path between {0} and {1}: {2}".format(vnf_src_name, vnf_dst_name, path)) @@ -617,10 +641,10 @@ class DCNetwork(Containernet): for i in range(0,len(path)): current_node = self.getNodeByName(current_hop) - if path.index(current_hop) < len(path)-1: - next_hop = path[path.index(current_hop)+1] + if i < len(path) - 1: + next_hop = path[i + 1] else: - #last switch reached + # last switch reached next_hop = vnf_dst_name next_node = self.getNodeByName(next_hop) @@ -644,6 +668,7 @@ class DCNetwork(Containernet): kwargs['current_hop'] = current_hop kwargs['switch_inport_name'] = src_sw_inport_name kwargs['switch_outport_name'] = dst_sw_outport_name + kwargs['pathindex'] = i if self.controller == RemoteController: ## set flow entry via ryu rest api @@ -666,7 +691,8 @@ class DCNetwork(Containernet): match_input = kwargs.get('match') cmd = kwargs.get('cmd') path = kwargs.get('path') - current_hop = kwargs.get('current_hop') + index = kwargs.get('pathindex') + vlan = kwargs.get('vlan') priority = kwargs.get('priority') # flag to not set the ovs port vlan tag @@ -697,7 +723,7 @@ class DCNetwork(Containernet): if cmd == 'add-flow': prefix = 'stats/flowentry/add' if vlan != None: - if path.index(current_hop) == 0: # first node + if index == 0: # first node # set vlan tag in ovs instance (to isolate E-LANs) if not skip_vlan_tag: in_port_name = kwargs.get('switch_inport_name') @@ -711,10 +737,11 @@ class DCNetwork(Containernet): action = {} action['type'] = 'SET_FIELD' action['field'] = 'vlan_vid' - action['value'] = vlan + # ryu expects the field to be masked + action['value'] = vlan | 0x1000 flow['actions'].append(action) - if path.index(current_hop) == len(path) - 1: # last node + elif index == len(path) - 1: # last node # set vlan tag in ovs instance (to isolate E-LANs) if not skip_vlan_tag: out_port_name = kwargs.get('switch_outport_name') @@ -726,7 +753,7 @@ class DCNetwork(Containernet): action['type'] = 'POP_VLAN' flow['actions'].append(action) - if 0 < path.index(current_hop) < (len(path) - 1): # middle nodes + else: # middle nodes match += ',dl_vlan=%s' % vlan # output action must come last @@ -762,7 +789,7 @@ class DCNetwork(Containernet): match_input = kwargs.get('match') cmd = kwargs.get('cmd') path = kwargs.get('path') - current_hop = kwargs.get('current_hop') + index = kwargs.get('pathindex') vlan = kwargs.get('vlan') s = ',' @@ -774,10 +801,10 @@ class DCNetwork(Containernet): if cmd == 'add-flow': action = 'action=%s' % switch_outport_nr if vlan != None: - if path.index(current_hop) == 0: # first node + if index == 0: # first node action = ('action=mod_vlan_vid:%s' % vlan) + (',output=%s' % switch_outport_nr) match = '-O OpenFlow13 ' + match - elif path.index(current_hop) == len(path) - 1: # last node + elif index == len(path) - 1: # last node match += ',dl_vlan=%s' % vlan action = 'action=strip_vlan,output=%s' % switch_outport_nr else: # middle nodes @@ -887,4 +914,4 @@ class DCNetwork(Containernet): src_sw = connected_sw src_sw_inport_nr = link_dict[link]['dst_port_nr'] src_sw_inport_name = link_dict[link]['dst_port_name'] - return src_sw_inport_name \ No newline at end of file + return src_sw_inport_name