@Override
public net.floodlightcontroller.core.IListener.Command receive(
IOFSwitch sw, OFMessage msg, FloodlightContext cntx) {
if (msg.getType() == OFType.PACKET_IN) {
OFPacketIn pi = (OFPacketIn) msg;
Ethernet eth =
IFloodlightProviderService.bcStore.get(
cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
Short type = eth.getEtherType();
if (type == Ethernet.TYPE_IPv4) {
IPv4 ippacket = (IPv4) eth.getPayload();
log.info("New IPv4 message found. \n {} \n", eth.toString());
// For debugging purposes in mininet only
if (ippacket.getProtocol() == IPv4.PROTOCOL_ICMP) {
// ICMP icmp = (ICMP)ippacket.getPayload();
log.info("New ICMP message found. \n {} \n", ippacket.toString());
// TODO: Call doForwardFlow with the calculated weights
// change doForwardFlow args...
// doForwardFlow(sw, pi, cntx);
}
}
}
return Command.CONTINUE;
}
@Override
@LogMessageDoc(
level = "ERROR",
message = "Unexpected decision made for this packet-in={}",
explanation =
"An unsupported PacketIn decision has been " + "passed to the flow programming component",
recommendation = LogMessageDoc.REPORT_CONTROLLER_BUG)
public Command processPacketInMessage(
IOFSwitch sw, OFPacketIn pi, IRoutingDecision decision, FloodlightContext cntx) {
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
// If a decision has been made we obey it
// otherwise we just forward
if (decision != null) {
if (log.isTraceEnabled()) {
log.trace(
"Forwaring decision={} was made for PacketIn={}",
decision.getRoutingAction().toString(),
pi);
}
switch (decision.getRoutingAction()) {
case NONE:
// don't do anything
return Command.CONTINUE;
case FORWARD_OR_FLOOD:
case FORWARD:
doForwardFlow(sw, pi, cntx, false);
return Command.CONTINUE;
case MULTICAST:
// treat as broadcast
doFlood(sw, pi, cntx);
return Command.CONTINUE;
case DROP:
doDropFlow(sw, pi, decision, cntx);
return Command.CONTINUE;
default:
log.error(
"Unexpected decision made for this packet-in={}", pi, decision.getRoutingAction());
return Command.CONTINUE;
}
} else {
if (log.isTraceEnabled()) {
log.trace("No decision was made for PacketIn={}, forwarding", pi);
}
if (eth.isBroadcast() || eth.isMulticast()) {
// For now we treat multicast as broadcast
doFlood(sw, pi, cntx);
} else {
doForwardFlow(sw, pi, cntx, false);
}
}
return Command.CONTINUE;
}
protected boolean isInSwitchBroadcastCache(IOFSwitch sw, OFPacketIn pi, FloodlightContext cntx) {
if (sw == null) return true;
// If the feature is disabled, always return false;
if (!broadcastCacheFeature) return false;
// Get the hash of the Ethernet packet.
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
long hash = pi.getInPort() * prime2 + eth.hashCode();
// some FORWARD_OR_FLOOD packets are unicast with unknown destination mac
return sw.updateBroadcastCache(hash, pi.getInPort());
}
protected Command processPacketInMessage(IOFSwitch sw, OFPacketIn pi, FloodlightContext cntx) {
// get the packet-in switch.
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
if (eth.getEtherType() == Ethernet.TYPE_BSN) {
BSN bsn = (BSN) eth.getPayload();
if (bsn == null) return Command.STOP;
if (bsn.getPayload() == null) return Command.STOP;
// It could be a packet other than BSN LLDP, therefore
// continue with the regular processing.
if (bsn.getPayload() instanceof LLDP == false) return Command.CONTINUE;
doFloodBDDP(sw.getId(), pi, cntx);
} else {
return dropFilter(sw.getId(), pi, cntx);
}
return Command.STOP;
}
protected boolean isInBroadcastCache(IOFSwitch sw, OFPacketIn pi, FloodlightContext cntx) {
// Get the cluster id of the switch.
// Get the hash of the Ethernet packet.
if (sw == null) return true;
// If the feature is disabled, always return false;
if (!broadcastCacheFeature) return false;
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
Long broadcastHash;
broadcastHash =
topology.getL2DomainId(sw.getId()) * prime1 + pi.getInPort() * prime2 + eth.hashCode();
if (broadcastCache.update(broadcastHash)) {
sw.updateBroadcastCache(broadcastHash, pi.getInPort());
return true;
} else {
return false;
}
}
@LogMessageDocs({
@LogMessageDoc(
level = "ERROR",
message = "Failure writing deny flow mod",
explanation = "An I/O error occurred while writing a " + "deny flow mod to a switch",
recommendation = LogMessageDoc.CHECK_SWITCH)
})
public static boolean blockHost(
IFloodlightProviderService floodlightProvider,
SwitchPort sw_tup,
long host_mac,
short hardTimeout,
long cookie) {
if (sw_tup == null) {
return false;
}
IOFSwitch sw = floodlightProvider.getSwitches().get(sw_tup.getSwitchDPID());
if (sw == null) return false;
int inputPort = sw_tup.getPort();
log.debug(
"blockHost sw={} port={} mac={}", new Object[] {sw, sw_tup.getPort(), new Long(host_mac)});
// Create flow-mod based on packet-in and src-switch
OFFlowMod fm = (OFFlowMod) floodlightProvider.getOFMessageFactory().getMessage(OFType.FLOW_MOD);
OFMatch match = new OFMatch();
List<OFAction> actions = new ArrayList<OFAction>(); // Set no action to
// drop
match
.setDataLayerSource(Ethernet.toByteArray(host_mac))
.setInputPort((short) inputPort)
.setWildcards(OFMatch.OFPFW_ALL & ~OFMatch.OFPFW_DL_SRC & ~OFMatch.OFPFW_IN_PORT);
fm.setCookie(cookie)
.setHardTimeout(hardTimeout)
.setIdleTimeout(FLOWMOD_DEFAULT_IDLE_TIMEOUT)
.setHardTimeout(FLOWMOD_DEFAULT_HARD_TIMEOUT)
.setBufferId(OFPacketOut.BUFFER_ID_NONE)
.setMatch(match)
.setActions(actions)
.setLengthU(OFFlowMod.MINIMUM_LENGTH); // +OFActionOutput.MINIMUM_LENGTH);
try {
log.debug("write drop flow-mod sw={} match={} flow-mod={}", new Object[] {sw, match, fm});
// TODO: can't use the message damper sine this method is static
sw.write(fm, null);
} catch (IOException e) {
log.error("Failure writing deny flow mod", e);
return false;
}
return true;
}
protected String getCountersKey(IOFSwitch sw, OFMessage m, Ethernet eth) {
byte mtype = m.getType().getTypeValue();
// long swid = sw.getId();
String swsid = sw.getStringId();
short port = 0;
short l3type = 0;
byte l4type = 0;
if (eth != null) {
// Packet in counters
// Need port and protocol level differentiation
OFPacketIn packet = (OFPacketIn) m;
port = packet.getInPort();
l3type = eth.getEtherType();
if (l3type == (short) 0x0800) {
IPv4 ipV4 = (IPv4) eth.getPayload();
l4type = ipV4.getProtocol();
}
}
/* If possible, find and return counters for this tuple
*
* NOTE: this can be converted to a tuple for better performance,
* for now we are using a string representation as a the key
*/
String countersKey =
Byte.toString(mtype)
+ "-"
+ swsid
+ "-"
+ Short.toString(port)
+ "-"
+ Short.toString(l3type)
+ "-"
+ Byte.toString(l4type);
return countersKey;
}
@Test
public void testHandleMessageWithContext() throws Exception {
IOFSwitch sw = createMock(IOFSwitch.class);
expect(sw.getId()).andReturn(DatapathId.NONE).anyTimes();
IOFMessageListener test1 = createMock(IOFMessageListener.class);
expect(test1.getName()).andReturn("test1").anyTimes();
expect(test1.isCallbackOrderingPrereq((OFType) anyObject(), (String) anyObject()))
.andReturn(false)
.anyTimes();
expect(test1.isCallbackOrderingPostreq((OFType) anyObject(), (String) anyObject()))
.andReturn(false)
.anyTimes();
FloodlightContext cntx = new FloodlightContext();
expect(test1.receive(same(sw), same(pi), same(cntx))).andReturn(Command.CONTINUE);
IOFMessageListener test2 = createMock(IOFMessageListener.class);
expect(test2.getName()).andReturn("test2").anyTimes();
expect(test2.isCallbackOrderingPrereq((OFType) anyObject(), (String) anyObject()))
.andReturn(false)
.anyTimes();
expect(test2.isCallbackOrderingPostreq((OFType) anyObject(), (String) anyObject()))
.andReturn(false)
.anyTimes();
// test2 will not receive any message!
replay(test1, test2, sw);
controller.addOFMessageListener(OFType.PACKET_IN, test1);
controller.addOFMessageListener(OFType.ERROR, test2);
controller.handleMessage(sw, pi, cntx);
verify(test1, test2, sw);
Ethernet eth =
IFloodlightProviderService.bcStore.get(cntx, IFloodlightProviderService.CONTEXT_PI_PAYLOAD);
assertArrayEquals(testPacket.serialize(), eth.serialize());
}
public void doSetUp(HARole role) throws Exception {
super.setUp();
FloodlightModuleContext fmc = new FloodlightModuleContext();
FloodlightProvider cm = new FloodlightProvider();
fmc.addConfigParam(cm, "role", role.toString());
controller = (Controller) cm.getServiceImpls().get(IFloodlightProviderService.class);
fmc.addService(IFloodlightProviderService.class, controller);
MemoryStorageSource memstorage = new MemoryStorageSource();
fmc.addService(IStorageSourceService.class, memstorage);
RestApiServer restApi = new RestApiServer();
fmc.addService(IRestApiService.class, restApi);
ThreadPool threadPool = new ThreadPool();
fmc.addService(IThreadPoolService.class, threadPool);
MockSwitchManager switchService = new MockSwitchManager();
fmc.addService(IOFSwitchService.class, switchService);
PktInProcessingTime ppt = new PktInProcessingTime();
fmc.addService(IPktInProcessingTimeService.class, ppt);
// TODO: should mock IDebugCounterService and make sure
// the expected counters are updated.
DebugCounterServiceImpl debugCounterService = new DebugCounterServiceImpl();
fmc.addService(IDebugCounterService.class, debugCounterService);
DebugEventService debugEventService = new DebugEventService();
fmc.addService(IDebugEventService.class, debugEventService);
IShutdownService shutdownService = createMock(IShutdownService.class);
shutdownService.registerShutdownListener(anyObject(IShutdownListener.class));
expectLastCall().anyTimes();
replay(shutdownService);
fmc.addService(IShutdownService.class, shutdownService);
verify(shutdownService);
tp = new MockThreadPoolService();
fmc.addService(IThreadPoolService.class, tp);
syncService = new MockSyncService();
fmc.addService(ISyncService.class, syncService);
ppt.init(fmc);
restApi.init(fmc);
threadPool.init(fmc);
memstorage.init(fmc);
tp.init(fmc);
debugCounterService.init(fmc);
debugEventService.init(fmc);
syncService.init(fmc);
cm.init(fmc);
ppt.startUp(fmc);
restApi.startUp(fmc);
threadPool.startUp(fmc);
memstorage.startUp(fmc);
tp.startUp(fmc);
debugCounterService.startUp(fmc);
debugEventService.startUp(fmc);
syncService.startUp(fmc);
cm.startUp(fmc);
testPacket =
new Ethernet()
.setSourceMACAddress("00:44:33:22:11:00")
.setDestinationMACAddress("00:11:22:33:44:55")
.setEtherType(EthType.ARP)
.setPayload(
new ARP()
.setHardwareType(ARP.HW_TYPE_ETHERNET)
.setProtocolType(ARP.PROTO_TYPE_IP)
.setHardwareAddressLength((byte) 6)
.setProtocolAddressLength((byte) 4)
.setOpCode(ARP.OP_REPLY)
.setSenderHardwareAddress(Ethernet.toMACAddress("00:44:33:22:11:00"))
.setSenderProtocolAddress(IPv4.toIPv4AddressBytes("192.168.1.1"))
.setTargetHardwareAddress(Ethernet.toMACAddress("00:11:22:33:44:55"))
.setTargetProtocolAddress(IPv4.toIPv4AddressBytes("192.168.1.2")));
byte[] testPacketSerialized = testPacket.serialize();
// The specific factory can be obtained from the switch, but we don't have one
pi =
(OFPacketIn)
factory
.buildPacketIn()
.setBufferId(OFBufferId.NO_BUFFER)
.setInPort(OFPort.of(1))
.setData(testPacketSerialized)
.setReason(OFPacketInReason.NO_MATCH)
.setTotalLen(testPacketSerialized.length)
.build();
}
protected List<ICounter> getPacketInCounters(IOFSwitch sw, OFMessage m, Ethernet eth) {
/* If possible, find and return counters for this tuple */
String countersKey = this.getCountersKey(sw, m, eth);
List<ICounter> counters = this.pktinCounters.get(countersKey);
if (counters != null) {
return counters;
}
/*
* Create the required counters
*/
counters = new ArrayList<ICounter>();
/* values for names */
short port = ((OFPacketIn) m).getInPort();
short l3type = eth.getEtherType();
String switchIdHex = sw.getStringId();
String etherType = String.format("%04x", eth.getEtherType());
String packetName = m.getType().toClass().getName();
packetName = packetName.substring(packetName.lastIndexOf('.') + 1);
// L2 Type
String l2Type = null;
if (eth.isBroadcast()) {
l2Type = BROADCAST;
} else if (eth.isMulticast()) {
l2Type = MULTICAST;
} else {
l2Type = UNICAST;
}
/*
* Use alias for L3 type
* Valid EtherType must be greater than or equal to 0x0600
* It is V1 Ethernet Frame if EtherType < 0x0600
*/
if (l3type < 0x0600) {
etherType = "0599";
}
if (TypeAliases.l3TypeAliasMap != null && TypeAliases.l3TypeAliasMap.containsKey(etherType)) {
etherType = TypeAliases.l3TypeAliasMap.get(etherType);
} else {
etherType = "L3_" + etherType;
}
// overall controller packet counter names
String controllerCounterName = CounterStore.createCounterName(CONTROLLER_NAME, -1, packetName);
counters.add(createCounter(controllerCounterName, CounterType.LONG));
String switchCounterName = CounterStore.createCounterName(switchIdHex, -1, packetName);
counters.add(createCounter(switchCounterName, CounterType.LONG));
String portCounterName = CounterStore.createCounterName(switchIdHex, port, packetName);
counters.add(createCounter(portCounterName, CounterType.LONG));
// L2 counter names
String controllerL2CategoryCounterName =
CounterStore.createCounterName(CONTROLLER_NAME, -1, packetName, l2Type, NetworkLayer.L2);
counters.add(createCounter(controllerL2CategoryCounterName, CounterType.LONG));
String switchL2CategoryCounterName =
CounterStore.createCounterName(switchIdHex, -1, packetName, l2Type, NetworkLayer.L2);
counters.add(createCounter(switchL2CategoryCounterName, CounterType.LONG));
String portL2CategoryCounterName =
CounterStore.createCounterName(switchIdHex, port, packetName, l2Type, NetworkLayer.L2);
counters.add(createCounter(portL2CategoryCounterName, CounterType.LONG));
// L3 counter names
String controllerL3CategoryCounterName =
CounterStore.createCounterName(CONTROLLER_NAME, -1, packetName, etherType, NetworkLayer.L3);
counters.add(createCounter(controllerL3CategoryCounterName, CounterType.LONG));
String switchL3CategoryCounterName =
CounterStore.createCounterName(switchIdHex, -1, packetName, etherType, NetworkLayer.L3);
counters.add(createCounter(switchL3CategoryCounterName, CounterType.LONG));
String portL3CategoryCounterName =
CounterStore.createCounterName(switchIdHex, port, packetName, etherType, NetworkLayer.L3);
counters.add(createCounter(portL3CategoryCounterName, CounterType.LONG));
// L4 counters
if (l3type == (short) 0x0800) {
// resolve protocol alias
IPv4 ipV4 = (IPv4) eth.getPayload();
String l4name = String.format("%02x", ipV4.getProtocol());
if (TypeAliases.l4TypeAliasMap != null && TypeAliases.l4TypeAliasMap.containsKey(l4name)) {
l4name = TypeAliases.l4TypeAliasMap.get(l4name);
} else {
l4name = "L4_" + l4name;
}
// create counters
String controllerL4CategoryCounterName =
CounterStore.createCounterName(CONTROLLER_NAME, -1, packetName, l4name, NetworkLayer.L4);
counters.add(createCounter(controllerL4CategoryCounterName, CounterType.LONG));
String switchL4CategoryCounterName =
CounterStore.createCounterName(switchIdHex, -1, packetName, l4name, NetworkLayer.L4);
counters.add(createCounter(switchL4CategoryCounterName, CounterType.LONG));
String portL4CategoryCounterName =
CounterStore.createCounterName(switchIdHex, port, packetName, l4name, NetworkLayer.L4);
counters.add(createCounter(portL4CategoryCounterName, CounterType.LONG));
}
/* Add to map and return */
this.pktinCounters.putIfAbsent(countersKey, counters);
return this.pktinCounters.get(countersKey);
}