class NS3BaseIpv4L3Protocol(NS3Base):
_rtype = "abstract::ns3::Ipv4L3Protocol"
+ def __init__(self, ec, guid):
+ super(NS3BaseIpv4L3Protocol, self).__init__(ec, guid)
+ self.list_routing_uuid = None
+ self.static_routing_uuid = None
+
@property
def node(self):
from nepi.resources.ns3.ns3node import NS3BaseNode
def _configure_object(self):
simulation = self.simulation
- uuid_list_routing = simulation.create("Ipv4ListRouting")
- simulation.invoke(self.uuid, "SetRoutingProtocol", uuid_list_routing)
+ self.list_routing_uuid = simulation.create("Ipv4ListRouting")
+ simulation.invoke(self.uuid, "SetRoutingProtocol", self.list_routing_uuid)
- uuid_static_routing = simulation.create("Ipv4StaticRouting")
- simulation.invoke(uuid_list_routing, "AddRoutingProtocol", uuid_static_routing, 1)
+ self.static_routing_uuid = simulation.create("Ipv4StaticRouting")
+ simulation.invoke(self.list_routing_uuid, "AddRoutingProtocol",
+ self.static_routing_uuid, 1)
def _connect_object(self):
pass
def invoke(self, uuid, operation, *args, **kwargs):
if operation == "isAppRunning":
return self._is_app_running(uuid)
+ if operation == "addStaticRoute":
+ return self._add_static_route(uuid, *args)
if uuid.startswith(SINGLETON):
obj = self._singleton(uuid)
return False
+ def _add_static_route(self, ipv4_uuid, network, prefix, nexthop):
+ ipv4 = self.get_object(ipv4_uuid)
+
+ list_routing = ipv4.GetRoutingProtocol()
+ (static_routing, priority) = list_routing.GetRoutingProtocol(0)
+
+ ifindex = self._find_ifindex(ipv4, nexthop)
+ if ifindex == -1:
+ return False
+
+ nexthop = self.ns3.Ipv4Address(nexthop)
+
+ if network in ["0.0.0.0", "0", None]:
+ # Default route: 0.0.0.0/0
+ static_routing.SetDefaultRoute(nexthop, ifindex)
+ else:
+ mask = self.ns3.Ipv4Mask("/%s" % prefix)
+ network = self.ns3.Ipv4Address(network)
+
+ if prefix == 32:
+ # Host route: x.y.z.w/32
+ static_routing.AddHostRouteTo(network, nexthop, ifindex)
+ else:
+ # Network route: x.y.z.w/n
+ static_routing.AddNetworkRouteTo(network, mask, nexthop,
+ ifindex)
+ return True
+
+ def _find_ifindex(self, ipv4, nexthop):
+ ifindex = -1
+
+ nexthop = self.ns3.Ipv4Address(nexthop)
+
+ # For all the interfaces registered with the ipv4 object, find
+ # the one that matches the network of the nexthop
+ nifaces = ipv4.GetNInterfaces()
+ for ifidx in xrange(nifaces):
+ iface = ipv4.GetInterface(ifidx)
+ naddress = iface.GetNAddresses()
+ for addridx in xrange(naddress):
+ ifaddr = iface.GetAddress(addridx)
+ ifmask = ifaddr.GetMask()
+
+ ifindex = ipv4.GetInterfaceForPrefix(nexthop, ifmask)
+
+ if ifindex == ifidx:
+ return ifindex
+ return ifindex
+
ec.shutdown()
+ def test_routing(self):
+ """
+ network topology:
+ n4
+ |
+ n1 -- p2p -- n2 -- csma -- n5 -- p2p -- n6
+ | |
+ ping n6 n3
+
+
+ """
+ ec = ExperimentController(exp_id = "test-ns3-routes")
+
+ node = ec.register_resource("LinuxNode")
+ ec.set(node, "hostname", self.fedora_host)
+ ec.set(node, "username", self.fedora_user)
+ ec.set(node, "identity", self.fedora_identity)
+ ec.set(node, "cleanProcesses", True)
+ #ec.set(node, "cleanHome", True)
+
+ simu = ec.register_resource("LinuxNS3Simulation")
+ ec.set(simu, "verbose", True)
+ ec.register_connection(simu, node)
+
+ nsnode1 = add_ns3_node(ec, simu)
+ p2p12 = add_point2point_device(ec, nsnode1, "10.0.0.1", "30")
+
+ nsnode2 = add_ns3_node(ec, simu)
+ p2p21 = add_point2point_device(ec, nsnode2, "10.0.0.2", "30")
+ csma2 = add_csma_device(ec, nsnode2, "10.0.1.1", "24")
+
+ nsnode3 = add_ns3_node(ec, simu)
+ csma3 = add_csma_device(ec, nsnode3, "10.0.1.2", "24")
+
+ nsnode4 = add_ns3_node(ec, simu)
+ csma4 = add_csma_device(ec, nsnode4, "10.0.1.3", "24")
+
+ nsnode5 = add_ns3_node(ec, simu)
+ p2p56 = add_point2point_device(ec, nsnode5, "10.0.2.1", "30")
+ csma5 = add_csma_device(ec, nsnode5, "10.0.1.4", "24")
+
+ nsnode6 = add_ns3_node(ec, simu)
+ p2p65 = add_point2point_device(ec, nsnode6, "10.0.2.2", "30")
+
+ # P2P chan1
+ p2p_chan1 = ec.register_resource("ns3::PointToPointChannel")
+ ec.set(p2p_chan1, "Delay", "0s")
+ ec.register_connection(p2p_chan1, p2p12)
+ ec.register_connection(p2p_chan1, p2p21)
+
+ # CSMA chan
+ csma_chan = ec.register_resource("ns3::CsmaChannel")
+ ec.set(csma_chan, "Delay", "0s")
+ ec.register_connection(csma_chan, csma2)
+ ec.register_connection(csma_chan, csma3)
+ ec.register_connection(csma_chan, csma4)
+ ec.register_connection(csma_chan, csma5)
+
+ # P2P chan2
+ p2p_chan2 = ec.register_resource("ns3::PointToPointChannel")
+ ec.set(p2p_chan2, "Delay", "0s")
+ ec.register_connection(p2p_chan2, p2p56)
+ ec.register_connection(p2p_chan2, p2p65)
+
+ # Add routes - n1 - n6
+ r1 = ec.register_resource("ns3::Route")
+ ec.set(r1, "Network", "10.0.2.0")
+ ec.set(r1, "Prefix", "30")
+ ec.set(r1, "Nexthop", "10.0.0.2")
+ ec.register_connection(r1, nsnode1)
+
+ # Add routes - n2 - n6
+ r2 = ec.register_resource("ns3::Route")
+ ec.set(r2, "Network", "10.0.2.0")
+ ec.set(r2, "Prefix", "30")
+ ec.set(r2, "Nexthop", "10.0.1.4")
+ ec.register_connection(r2, nsnode2)
+
+ # Add routes - n5 - n1
+ r5 = ec.register_resource("ns3::Route")
+ ec.set(r5, "Network", "10.0.0.0")
+ ec.set(r5, "Prefix", "30")
+ ec.set(r5, "Nexthop", "10.0.1.1")
+ ec.register_connection(r5, nsnode5)
+
+ # Add routes - n6 - n1
+ r6 = ec.register_resource("ns3::Route")
+ ec.set(r6, "Network", "10.0.0.0")
+ ec.set(r6, "Prefix", "30")
+ ec.set(r6, "Nexthop", "10.0.2.1")
+ ec.register_connection(r6, nsnode6)
+
+ ### create pinger
+ ping = ec.register_resource("ns3::V4Ping")
+ ec.set (ping, "Remote", "10.0.2.2")
+ ec.set (ping, "Interval", "1s")
+ ec.set (ping, "Verbose", True)
+ ec.set (ping, "StartTime", "1s")
+ ec.set (ping, "StopTime", "21s")
+ ec.register_connection(ping, nsnode1)
+
+ ec.deploy()
+
+ ec.wait_finished([ping])
+
+ stdout = ec.trace(simu, "stdout")
+
+ expected = "20 packets transmitted, 20 received, 0% packet loss"
+ self.assertTrue(stdout.find(expected) > -1)
+
+ ec.shutdown()
+
+
if __name__ == '__main__':
unittest.main()
git://git.onelab.eu / nepi.git / commitdiff