137 lines
3.8 KiB
Python
137 lines
3.8 KiB
Python
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from mpConfig import MpConfig
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from mpECMPSingleInterfaceTopo import MpECMPSingleInterfaceTopo
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from mpParamTopo import MpParamTopo
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from mpTopo import MpTopo
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from struct import *
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class MpECMPSingleInterfaceConfig(MpConfig):
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def __init__(self, topo, param):
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MpConfig.__init__(self, topo, param)
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def configureNetwork(self):
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self.configureInterfaces()
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self.configureRoute()
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def configureRoute(self):
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i = 0
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for l in self.topo.routers:
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##todo calculate mask length
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cmd = self.getIptableRuleICMP(3, i)
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self.topo.commandTo(self.client, cmd)
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self.topo.commandTo(self.server, cmd)
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cmd = self.getIpRuleCmd(i)
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self.topo.commandTo(self.client, cmd)
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self.topo.commandTo(self.server, cmd)
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cmd = self.getDefaultRouteCmd(self.getRouterIPClient(i),
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i)
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self.topo.commandTo(self.client, cmd)
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cmd = self.getDefaultRouteCmd(self.getRouterIPServer(i),
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i)
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self.topo.commandTo(self.server, cmd)
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i = i + 1
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###
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cmd = self.addRouteDefaultSimple(self.getRouterIPServer(0))
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self.topo.commandTo(self.server, cmd)
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cmd = self.addRouteDefaultSimple(self.getRouterIPClient(0))
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self.topo.commandTo(self.client, cmd)
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self.topo.commandTo(self.client, "ip route flush cache")
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self.topo.commandTo(self.server, "ip route flush cache")
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def getIptableRuleICMP(self, maskLen, id):
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s = 'iptables -t mangle -A OUTPUT -m u32 --u32 ' + \
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'"6&0xFF=0x1 && ' + \
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'24&0x' + \
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pack('>I',(maskLen)).encode('hex') + \
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'=0x' + pack('>I',id).encode('hex') + \
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'" -j MARK --set-mark ' + str(id + 1)
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print (s)
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return s
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def getIpRuleCmd(self, id):
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s = 'ip rule add fwmark ' + str(id + 1) + ' table ' + \
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str(id + 1)
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print(s)
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return s
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def getDefaultRouteCmd(self, via, id):
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s = 'ip route add default via ' + via + ' table ' + str(id + 1)
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print(s)
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return s
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def configureInterfaces(self):
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self.client = self.topo.getHost(MpTopo.clientName)
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self.server = self.topo.getHost(MpTopo.serverName)
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self.routers = []
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i = 0
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netmask = "255.255.255.0"
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for l in self.topo.routers:
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self.routers.append(self.topo.getHost(
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MpTopo.routerNamePrefix + str(i)))
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cmd = self.interfaceUpCommand(
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self.getRouterInterfaceLSwitch(i),
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self.getRouterIPClient(i), netmask)
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self.topo.commandTo(self.routers[-1] , cmd)
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cmd = self.interfaceUpCommand(
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self.getRouterInterfaceRSwitch(i),
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self.getRouterIPServer(i), netmask)
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self.topo.commandTo(self.routers[-1] , cmd)
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i = i + 1
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cmd = self.interfaceUpCommand(self.getClientInterface(0),
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self.getClientIP(0), netmask)
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self.topo.commandTo(self.client, cmd)
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cmd = self.interfaceUpCommand(self.getServerInterface(),
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self.getServerIP(), netmask)
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self.topo.commandTo(self.server, cmd)
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def getClientIP(self, interfaceID):
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lSubnet = self.param.getParam(MpParamTopo.LSUBNET)
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clientIP = lSubnet + str(interfaceID) + ".1"
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return clientIP
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def getClientSubnet(self, interfaceID):
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lSubnet = self.param.getParam(MpParamTopo.LSUBNET)
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clientSubnet = lSubnet + str(interfaceID) + ".0/24"
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return clientSubnet
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def getRouterIPClient(self, id):
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lSubnet = self.param.getParam(MpParamTopo.LSUBNET)
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routerIP = lSubnet + "0." + str(id + 2)
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return routerIP
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def getRouterIPServer(self, id):
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rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
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routerIP = rSubnet + "0." + str(id + 2)
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return routerIP
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def getServerIP(self):
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rSubnet = self.param.getParam(MpParamTopo.RSUBNET)
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serverIP = rSubnet + "0.1"
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return serverIP
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def getClientInterfaceCount(self):
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return 1
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def getRouterInterfaceLSwitch(self, id):
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return MpTopo.routerNamePrefix + str(id) + "-eth0"
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def getRouterInterfaceRSwitch(self, id):
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return MpTopo.routerNamePrefix + str(id) + "-eth1"
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def getClientInterface(self, interfaceID):
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return MpTopo.clientName + "-eth" + str(interfaceID)
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def getServerInterface(self):
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return MpTopo.serverName + "-eth0"
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