def createMatch(self,request):
#loop over dictionary, use switch statement
match = of.ofp_match()
for attribute,value in request.openflow.items():
if attribute=="IngressPort":
match.in_port=value
elif attribute=="EthernetSource":
match.dl_src=value
elif attribute=="EthernetDestination":
match.dl_dst=value
elif attribute=="EthernetType":
match.dl_type=value
elif attribute=="VLANpriority":
match.dl_vlan_pop=value
elif attribute=="IPSourceAddress":
match.nw_src=value
elif attribute=="IPDestinationAddress":
match.nw_dst=value
elif attribute=="IPprotocol":
match.nw_proto
elif attribute=="IPToS":
match.nw_tos=value
elif attribute=="sourcePort":
match.tp_src=value
elif attribute=="destinationPort":
match.tp_dst=value
elif attribute=="VLANID":
match.dl_vlan=value
return match
def block(self, ip):
match = of.ofp_match()
match.nw_src = IPAddr(ip)
print self.colours["GREEN"] + "blocking ", ip + self.colours["END"]
msg2 = of.ofp_flow_mod(command=of.OFPFC_ADD, actions=[], match=match)
for connection in core.openflow.connections:
connection.send(msg2)
def block(self, ip):
match = of.ofp_match()
match.nw_src = IPAddr(ip)
print self.colours["GREEN"] + "blocking ", ip + self.colours["END"]
msg2 = of.ofp_flow_mod(command=of.OFPFC_ADD, actions=[], match=match)
for connection in core.openflow.connections:
connection.send(msg2)
def unblock(self, ip):
msg = of.ofp_packet_out()
action = of.ofp_action_output(port=of.OFPP_CONTROLLER)
msg.actions.append(action)
match = of.ofp_match()
match.nw_src = IPAddr(ip)
#match.nw_dst = IPAddr(ip[1])
msg.command = of.OFPFC_DELETE
msg.match = match
print self.colours["WHITE"] + "unblocking ", ip + self.colours["END"]
for connection in core.openflow.connections:
connection.send(msg)
def unblock(self, ip):
msg = of.ofp_packet_out()
action = of.ofp_action_output(port=of.OFPP_CONTROLLER)
msg.actions.append(action)
match = of.ofp_match()
match.nw_src = IPAddr(ip)
# match.nw_dst = IPAddr(ip[1])
msg.command = of.OFPFC_DELETE
msg.match = match
print self.colours["WHITE"] + "unblocking ", ip + self.colours["END"]
for connection in core.openflow.connections:
connection.send(msg)
def measureLatency(self,switchOne, switchTwo):
self.TimeTotal = 0 #time between controller, s1, s2
time.sleep(5)
s1 = None
s2 = None
"""go through the list of connected switches, mapping between s1 and the dpid trim the input
for core.connections print strpid"""
for switch in core.openflow.connections:
#print "Switch " + str(switch.dpid)
if switchOne.strip() == str(switch.dpid):
s1 = switch
if switchTwo.strip() == str(switch.dpid):
s2 = switch
print switchOne+" is "+str(s1)
print switchTwo+" is "+str(s2)
measureSwitchOne = LatencyMeasurment(s1)
measureSwitchTwo = LatencyMeasurment(s2)
print "Round trip time to switch one: "+str(measureSwitchOne.roundTripTime)
print "Round trip time to switch two: "+str(measureSwitchTwo.roundTripTime)
self.timeS1 = measureSwitchOne.roundTripTime
self.timeS2 = measureSwitchTwo.roundTripTime
"""send flow mod to switch, put timestamp in ethernet packet, and choose the right port that goes to s2"""
match = of.ofp_match()
match.dl_type= 0001
self.sendLatencyFlowMod(s1)
time.sleep(1)
self.sendLatencyEthernetPacket(2,s1) #get port number from mac address
" to get the port, use mac table?"
