package net.floodlightcontroller.dhcpserver;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Map;
import org.projectfloodlight.openflow.protocol.OFFlowAdd;
import org.projectfloodlight.openflow.protocol.OFPortDesc;
import org.projectfloodlight.openflow.protocol.action.OFAction;
import org.projectfloodlight.openflow.protocol.action.OFActionOutput;
import org.projectfloodlight.openflow.protocol.match.Match;
import org.projectfloodlight.openflow.protocol.match.MatchField;
import org.projectfloodlight.openflow.types.DatapathId;
import org.projectfloodlight.openflow.types.EthType;
import org.projectfloodlight.openflow.types.IpProtocol;
import org.projectfloodlight.openflow.types.OFBufferId;
import org.projectfloodlight.openflow.types.OFPort;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import net.floodlightcontroller.core.IFloodlightProviderService;
import net.floodlightcontroller.core.IOFSwitch;
import net.floodlightcontroller.core.IOFSwitchListener;
import net.floodlightcontroller.core.PortChangeType;
import net.floodlightcontroller.core.internal.IOFSwitchService;
import net.floodlightcontroller.core.module.FloodlightModuleContext;
import net.floodlightcontroller.core.module.FloodlightModuleException;
import net.floodlightcontroller.core.module.IFloodlightModule;
import net.floodlightcontroller.core.module.IFloodlightService;
import net.floodlightcontroller.packet.UDP;
import net.floodlightcontroller.staticentry.IStaticEntryPusherService;
// Adding a comment to test a new commit
public class DHCPSwitchFlowSetter implements IFloodlightModule, IOFSwitchListener {
protected static Logger log;
protected IFloodlightProviderService floodlightProvider;
protected IStaticEntryPusherService sfp;
protected IOFSwitchService switchService;
@Override
public Collection<Class<? extends IFloodlightService>> getModuleServices() {
return null;
}
@Override
public Map<Class<? extends IFloodlightService>, IFloodlightService> getServiceImpls() {
return null;
}
@Override
public Collection<Class<? extends IFloodlightService>> getModuleDependencies() {
Collection<Class<? extends IFloodlightService>> l =
new ArrayList<Class<? extends IFloodlightService>>();
l.add(IFloodlightProviderService.class);
l.add(IStaticEntryPusherService.class);
l.add(IOFSwitchService.class);
return l;
}
@Override
public void init(FloodlightModuleContext context)
throws FloodlightModuleException {
floodlightProvider = context.getServiceImpl(IFloodlightProviderService.class);
log = LoggerFactory.getLogger(DHCPServer.class);
sfp = context.getServiceImpl(IStaticEntryPusherService.class);
switchService = context.getServiceImpl(IOFSwitchService.class);
}
@Override
public void startUp(FloodlightModuleContext context) {
}
@Override
public void switchAdded(DatapathId dpid) {
/* Insert static flows on all ports of the switch to redirect
* DHCP client --> DHCP DHCPServer traffic to the controller.
* DHCP client's operate on UDP port 67
*/
IOFSwitch sw = switchService.getSwitch(dpid);
//fix concurrency flaw
if (sw == null){
return;
}
OFFlowAdd.Builder flow = sw.getOFFactory().buildFlowAdd();
Match.Builder match = sw.getOFFactory().buildMatch();
ArrayList<OFAction> actionList = new ArrayList<OFAction>();
OFActionOutput.Builder action = sw.getOFFactory().actions().buildOutput();
for (OFPortDesc port : sw.getPorts()) {
match.setExact(MatchField.IN_PORT, port.getPortNo());
match.setExact(MatchField.ETH_TYPE, EthType.IPv4);
match.setExact(MatchField.IP_PROTO, IpProtocol.UDP);
match.setExact(MatchField.UDP_SRC, UDP.DHCP_CLIENT_PORT);
action.setMaxLen(0xffFFffFF);
action.setPort(OFPort.CONTROLLER);
actionList.add(action.build());
flow.setBufferId(OFBufferId.NO_BUFFER);
flow.setHardTimeout(0);
flow.setIdleTimeout(0);
flow.setOutPort(OFPort.CONTROLLER);
flow.setActions(actionList);
flow.setMatch(match.build());
flow.setPriority(32767);
sfp.addFlow("dhcp-port---" + port.getPortNo().getPortNumber() + "---(" + port.getName() + ")", flow.build(), sw.getId());
}
}
@Override
public void switchRemoved(DatapathId switchId) {
}
@Override
public void switchActivated(DatapathId switchId) {
}
@Override
public void switchPortChanged(DatapathId switchId, OFPortDesc port, PortChangeType type) {
}
@Override
public void switchChanged(DatapathId switchId) {
}
@Override
public void switchDeactivated(DatapathId switchId) {
// TODO Auto-generated method stub
}
}