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316 lines (256 loc) · 14.7 KB
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import re
import socket
from time import sleep
import mininet.node
import mininet.link
from mininet.log import info
from mininet.util import moveIntf
from mininet.cluster.link import RemoteLink
class Lte (object):
def __init__ (self, tdf=1, mode='Master', imsiBase=0, cellIdBase=0,
ueIpBase='7.0.0.1', ueGwIpAddr='7.0.0.1',
pgwIpBase='1.0.0.0', pgwMask='255.0.0.0',
epcSwitch=None, agentIp=None, agentPort=53724, logFile=None,
homeEnbTxPower=30.0, slaveName='slaveTap'):
if epcSwitch == None:
info ('*** error: epcSwitch is a required argument.\n')
return
elif agentIp == None:
info ('*** error: agentIp is a required argument.\n')
return
self.epcSwitch = epcSwitch
self.ueIpBase = ueIpBase
self.ueGwIpAddr = ueGwIpAddr
self.tapBridgeIntfs = []
self.ueIndex = -1
self.startAgent ()
self.csock = None
while self.csock == None:
self.csock = self.connectAgent (agentIp, agentPort)
if mode == 'Master':
self.addEpcEntity (self.epcSwitch, 'pgwTap')
self.addEpcEntity (self.epcSwitch, 'sgwTap')
self.addEpcEntity (self.epcSwitch, 'mmeTap')
self.addEpcEntity (self.epcSwitch, 'masterTap')
self.nextAddr = 2
elif mode == 'Slave':
IpBase = re.sub (r'[0-9]*\.([0-9]*\.[0-9]*\.[0-9])', r'0.\1', ueIpBase)
self.csock.sendall ('Config.SetDefault ("ns3::TapEpcHelper::EpcSlaveDeviceName", StringValue ("{0}"))\n'.format (slaveName))
self.csock.sendall ('Config.SetDefault ("ns3::TapEpcHelper::SlaveUeIpAddressBase", StringValue ("{0}"))\n'.format (IpBase))
self.csock.sendall ('Config.SetDefault ("ns3::TapEpcHelper::SlaveIpAddressBase", StringValue ("{0}"))\n'.format (IpBase))
self.addEpcEntity (self.epcSwitch, slaveName)
self.nextAddr = 1
else:
info ('*** error: mode should be Master or Slave.\n')
self.csock.sendall ("exit")
return
self.csock.sendall ('LogComponentEnable ("TapEpcHelper", LOG_LEVEL_ALL)\n')
self.csock.sendall ('LogComponentEnable ("TapEpcMme", LOG_LEVEL_ALL)\n')
self.csock.sendall ('LogComponentEnable ("EpcSgwPgwApplication", LOG_LEVEL_ALL)\n')
self.csock.sendall ('LogComponentEnable ("FdNetDevice", LOG_LEVEL_DEBUG)\n')
self.csock.sendall ('LogComponentEnable ("TeidDscpMapping", LOG_LEVEL_LOGIC)\n')
self.csock.sendall ('LogComponentEnable ("TapEpcEnbApplication", LOG_LEVEL_ALL)\n')
self.csock.sendall ('GlobalValue.Bind ("SimulatorImplementationType", StringValue ("ns3::RealtimeSimulatorImpl"))\n')
self.csock.sendall ('GlobalValue.Bind ("ChecksumEnabled", BooleanValue (True))\n')
self.csock.sendall ('Config.SetDefault ("ns3::LteSpectrumPhy::CtrlErrorModelEnabled", BooleanValue (False))\n')
self.csock.sendall ('Config.SetDefault ("ns3::LteSpectrumPhy::DataErrorModelEnabled", BooleanValue (False))\n')
self.csock.sendall ('Config.SetDefault ("ns3::TcpSocket::SegmentSize", UintegerValue (2440))\n')
self.csock.sendall ('Config.SetDefault ("ns3::LteHelper::Scheduler", StringValue ("ns3::FdMtFfMacScheduler"))\n')
self.csock.sendall ('Config.SetDefault ("ns3::TapEpcHelper::Mode", StringValue ("{0}"))\n'.format (mode))
self.csock.sendall ('Config.SetDefault ("ns3::LteEnbPhy::TxPower", DoubleValue ({0}))\n'.format (homeEnbTxPower))
self.csock.sendall ('LteTimeDilationFactor.SetTimeDilationFactor ({0})\n'.format (tdf))
if logFile != None:
self.csock.sendall ('Config.SetDefault ("ns3::TapEpcHelper::LogFile", StringValue ("{0}"))\n'.format (logFile))
self.csock.sendall ('attachDelay = 10.0\n')
self.csock.sendall ('lteHelper = LteHelper ()\n')
self.csock.sendall ('lteHelper.SetImsiCounter ({0})\n'.format (imsiBase))
self.csock.sendall ('lteHelper.SetCellIdCounter ({0})\n'.format (cellIdBase))
self.csock.sendall ('tapEpcHelper = TapEpcHelper ()\n')
self.csock.sendall ('lteHelper.SetEpcHelper (tapEpcHelper)\n')
self.csock.sendall ('tapEpcHelper.Initialize ()\n')
if mode == 'Master':
self.csock.sendall ('pgw = tapEpcHelper.GetPgwNode ()\n')
self.csock.sendall ('tap = TapFdNetDeviceHelper ()\n')
self.csock.sendall ('tap.SetDeviceName ("pgwTap")\n')
self.csock.sendall ('tap.SetTapMacAddress (Mac48Address.Allocate ())\n')
self.csock.sendall ('pgwDevice = tap.Install (pgw)\n')
self.csock.sendall ('ipv4Helper = Ipv4AddressHelper ()\n')
self.csock.sendall ('ipv4Helper.SetBase (Ipv4Address ("{0}"), Ipv4Mask ("{1}"))\n'.format (pgwIpBase, pgwMask))
self.csock.sendall ('pgwIpIfaces = ipv4Helper.Assign (pgwDevice)\n')
self.csock.sendall ('mobility = MobilityHelper ()\n')
self.csock.sendall ('enbLteDevs = NetDeviceContainer ()\n')
self.csock.sendall ('ueLteDevs = NetDeviceContainer ()\n')
self.csock.sendall ('internetStack = InternetStackHelper ()\n')
self.csock.sendall ('internetStack.SetIpv6StackInstall (False)\n')
self.csock.sendall ('Simulator.Schedule (Seconds (attachDelay), LteHelper.Attach, lteHelper, ueLteDevs)\n')
self.csock.sendall ('def run ():\n')
self.csock.sendall (' Simulator.Stop (Seconds (86400))\n')
self.csock.sendall (' Simulator.Run ()\n')
self.csock.sendall ('nsThread = Thread (target = run)\n')
self.csock.sendall ('tapBridges = []\n')
def startAgent (self):
self.epcSwitch.rcmd ("/usr/bin/opennet-agent.py start")
def stopAgent (self):
self.epcSwitch.rcmd ("/usr/bin/opennet-agent.py stop")
def connectAgent (self, ip, port):
csock = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
try:
info ('*** Connecting to opennet-agent... ')
csock.connect ((ip, port))
except socket.error, exc:
info ('Failed\n')
return None
else:
info ('Successed\n')
return csock
def addEpcEntity (self, node, intfName):
port = node.newPort ()
self.TapIntf (intfName, node, port)
def addEnb (self, node, intfName, mobilityType="ns3::ConstantPositionMobilityModel", position=None, velocity=None):
port = node.newPort ()
self.TapIntf (intfName, node, port)
self.csock.sendall ('nsNode = Node ()\n')
self.csock.sendall ('mobility.SetMobilityModel ("{0}")\n'.format (mobilityType))
self.csock.sendall ('mobility.Install (nsNode)\n')
if position != None:
self.csock.sendall ('mm = nsNode.GetObject(MobilityModel.GetTypeId())\n')
self.csock.sendall ('mm.SetPosition(Vector({0}, {1}, {2}))\n'.format (position[0], position[1], position[2]))
if velocity != None and mobilityType == "ns3::ConstantVelocityMobilityModel":
self.csock.sendall ('mm = nsNode.GetObject(MobilityModel.GetTypeId())\n')
self.csock.sendall ('mm.SetVelocity(Vector({0}, {1}, {2}))\n'.format (velocity[0], velocity[1], velocity[2]))
self.csock.sendall ('enbLteDev = lteHelper.InstallEnbDevice (NodeContainer (nsNode))\n')
self.csock.sendall ('enbLteDevs.Add (enbLteDev)\n')
def addUe (self, node, mobilityType="ns3::ConstantPositionMobilityModel", position=None, velocity=None):
self.ueIndex += 1
node.cmd ('sysctl -w net.ipv6.conf.all.disable_ipv6=1')
port = node.newPort ()
intfName = "{0}-eth{1}".format (node.name, port)
self.csock.sendall ('nsNode = Node ()\n')
self.csock.sendall ('mobility.SetMobilityModel ("{0}")\n'.format (mobilityType))
self.csock.sendall ('mobility.Install (nsNode)\n')
if position != None:
self.csock.sendall ('mm = nsNode.GetObject(MobilityModel.GetTypeId())\n')
self.csock.sendall ('mm.SetPosition(Vector({0}, {1}, {2}))\n'.format (position[0], position[1], position[2]))
if velocity != None and mobilityType == "ns3::ConstantVelocityMobilityModel":
self.csock.sendall ('mm = nsNode.GetObject(MobilityModel.GetTypeId())\n')
self.csock.sendall ('mm.SetVelocity(Vector({0}, {1}, {2}))\n'.format (velocity[0], velocity[1], velocity[2]))
self.csock.sendall ('ueLteDev = lteHelper.InstallUeDevice (NodeContainer (nsNode))\n')
self.csock.sendall ('ueLteDevs.Add (ueLteDev)\n')
self.csock.sendall ('internetStack.Install (nsNode)\n')
self.csock.sendall ('tapEpcHelper.AssignUeIpv4Address (ueLteDev)\n')
self.csock.sendall ('gatewayMacAddr = tapEpcHelper.GetUeDefaultGatewayMacAddress ()\n')
ueIp = self.allocateIp ()
tbIntf = self.TapBridgeIntf (intfName, node, port, self.ueGwIpAddr, ueIp, self.epcSwitch, self.csock)
self.tapBridgeIntfs.append (tbIntf)
return ueIp, self.ueIndex
def addEpsBearer (self, ueIndex=0, localPortStart=0, localPortEnd=65535, remotePortStart=0, remotePortEnd=65535, qci='EpsBearer.NGBR_VIDEO_TCP_DEFAULT'):
self.csock.sendall ('tft = EpcTft ()\n')
self.csock.sendall ('pf = EpcTft.PacketFilter ()\n')
self.csock.sendall ('pf.localPortStart = {0}\n'.format (localPortStart))
self.csock.sendall ('pf.localPortEnd = {0}\n'.format (localPortEnd))
self.csock.sendall ('pf.remotePortStart = {0}\n'.format (remotePortStart))
self.csock.sendall ('pf.remotePortEnd = {0}\n'.format (remotePortEnd))
self.csock.sendall ('tft.Add (pf)\n')
self.csock.sendall ('bearer = EpsBearer ({0})\n'.format (qci))
self.csock.sendall ('Simulator.Schedule (Seconds (attachDelay), LteHelper.ActivateDedicatedEpsBearer, lteHelper, ueLteDevs.Get ({0}), bearer, tft)\n'.format (ueIndex))
def allocateIp (self):
pat = '[0-9]*\.[0-9]*\.[0-9]*\.'
base = (re.findall (pat, self.ueIpBase))[0]
ip = "{0}{1}".format (base, self.nextAddr)
self.nextAddr += 1
return ip
def start (self):
self.csock.sendall ('if nsThread.isAlive ():\n csock.sendall ("True")\nelse:\n csock.sendall ("False")\n')
while True:
data = self.csock.recv (1024)
if data == "True":
info ('*** NS-3 thread is already running\n')
return
elif data == "False":
info ('*** Starting NS-3 thread\n')
break
self.disableIpv6 (self.epcSwitch)
self.csock.sendall ('nsThread.start ()\n')
info ('*** moveIntoNamespace\n')
for tbIntf in self.tapBridgeIntfs:
info ('{0} '.format (tbIntf.name))
tbIntf.moveIntoNamespace ()
info ('\n')
self.enableIpv6 (self.epcSwitch)
def stop (self):
self.csock.sendall ('Simulator.Stop (Seconds (1))\n')
self.csock.sendall ('while nsThread.isAlive ():\n sleep (0.1)\n')
def clear (self):
self.csock.sendall ('Simulator.Destroy ()\n')
self.csock.sendall ('exit ()\n')
self.csock.close ()
self.stopAgent ()
def disableIpv6 (self, node):
node.rcmd ('sysctl -w net.ipv6.conf.all.disable_ipv6=1')
def enableIpv6 (self, node):
node.rcmd ('sysctl -w net.ipv6.conf.all.disable_ipv6=0')
class TapIntf (mininet.link.Intf):
"""
TapIntf is a Linux TAP interface.
"""
def __init__ (self, name=None, node=None, port=None, **params):
self.name = name
self.node = node
self.createTap (self.name)
mininet.link.Intf.__init__ (self, self.name, node, port, **params)
def createTap (self, name):
self.node.cmd ('ip tuntap add {0} mode tap'.format (name))
class TapBridgeIntf (mininet.link.Intf):
"""
TapBridgeIntf is a Linux TAP interface, which is bridged with an NS-3 NetDevice.
"""
def __init__ (self, name=None, node=None, port=None, ueGwIpAddr=None, ueIp=None,
localNode=None, csock=None, **params):
self.name = name
self.node = node
self.ueGwIpAddr = ueGwIpAddr
self.ueIp = ueIp
self.localNode = localNode
self.csock = csock
self.createTap (self.name)
self.delayedMove = True
if node.inNamespace == True:
self.inRightNamespace = False
else:
self.inRightNamespace = True
mininet.link.Intf.__init__ (self, name, node, port, **params)
self.csock.sendall ('nsDevice = ueLteDev.Get (0)\n')
self.csock.sendall ('tapBridgeHelper = TapBridgeHelper ()\n')
self.csock.sendall ('tapBridgeHelper.SetAttribute ("Mode", StringValue ("ConfigureLocal"))\n')
self.csock.sendall ('tapBridgeHelper.SetAttribute ("DeviceName", StringValue ("{0}"))\n'.format (self.name))
self.csock.sendall ('macAddress = Mac48Address.Allocate ()\n')
self.csock.sendall ('tapBridgeHelper.SetAttribute ("MacAddress", Mac48AddressValue (macAddress))\n')
self.csock.sendall ('tb = tapBridgeHelper.Install (nsNode, nsDevice)\n')
self.csock.sendall ('tapBridges.append (tb)\n')
self.csock.sendall ('dev = nsDevice.GetObject (LteUeNetDevice.GetTypeId ())\n')
self.csock.sendall ('dev.SetMacAddress (macAddress)\n')
self.csock.sendall ('dev.SetGatewayMacAddress (gatewayMacAddr)\n')
def moveIntoNamespace (self):
while True:
self.csock.sendall ('if tapBridges[-1].IsLinkUp():\n csock.sendall ("True")\nelse:\n csock.sendall ("False")\n')
data = self.csock.recv (1024)
if data == "True":
break
else:
sleep (0.1)
RemoteLink.moveIntf (self.name, self.node)
self.node.cmd ('ip link set dev {0} up'.format (self.name))
self.node.cmd ('ip addr add dev {0} {1}/8'.format (self.name, self.ueIp))
self.node.cmd ('ip route add default via {0}'.format (self.ueGwIpAddr))
self.node.cmd ('arp -s {0} 00:00:00:00:00:00'.format (self.ueGwIpAddr))
pat = '[0-9]*\.'
route = (re.findall (pat, self.ueIp))[0] + '0.0.0'
self.node.cmd ('ip route del {0}/8'.format (route))
def cmd (self, *args, **kwargs):
if self.inRightNamespace == True:
return self.node.cmd (*args, **kwargs)
else:
return self.localNode.cmd (*args, **kwargs)
def createTap (self, name):
self.node.cmd ('ip tuntap add {0} mode tap'.format (name))
self.node.cmd ('ip link set dev {0} netns 1'.format (name))