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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.openstackswitching;
import org.onlab.packet.Ethernet;
import org.onlab.packet.IPv4;
import org.onlab.packet.Ip4Address;
import org.onlab.packet.Ip4Prefix;
import org.onlab.packet.MacAddress;
import org.onlab.packet.TpPort;
import org.onosproject.core.ApplicationId;
import org.onosproject.net.DeviceId;
import org.onosproject.net.Port;
import org.onosproject.net.PortNumber;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.TrafficSelector;
import org.onosproject.net.flow.TrafficTreatment;
import org.onosproject.net.flowobjective.DefaultForwardingObjective;
import org.onosproject.net.flowobjective.FlowObjectiveService;
import org.onosproject.net.flowobjective.ForwardingObjective;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* It populates switching flow rules.
*
*/
public class OpenstackSwitchingRulePopulator {
private static Logger log = LoggerFactory
.getLogger(OpenstackSwitchingRulePopulator.class);
private FlowObjectiveService flowObjectiveService;
private ApplicationId appId;
/**
* Creates OpenstackSwitchingRulPopulator.
*
* @param appId application id
* @param flowObjectiveService FlowObjectiveService reference
*/
public OpenstackSwitchingRulePopulator(ApplicationId appId,
FlowObjectiveService flowObjectiveService) {
this.flowObjectiveService = flowObjectiveService;
this.appId = appId;
}
/**
* Populates flows rules for forwarding packets to and from VMs.
*
* @param ip v4 IP Address
* @param id device ID
* @param port port
* @param cidr v4 IP prefix
* @return true if it succeeds to populate rules, false otherwise.
*/
public boolean populateForwardingRule(Ip4Address ip, DeviceId id, Port port, Ip4Prefix cidr) {
setFlowRuleForVMsInSameCnode(ip, id, port, cidr);
return true;
}
/**
* Populates the common flows rules for all VMs.
*
* - Send ARP packets to the controller
* - Send DHCP packets to the controller
*
* @param id Device ID to populates rules to
*/
public void populateDefaultRules(DeviceId id) {
setFlowRuleForArp(id);
log.warn("Default rule has been set");
}
/**
* Populates the forwarding rules for VMs with the same VNI but in other Code.
*
* @param vni VNI for the networks
* @param id device ID to populates the flow rules
* @param hostIp host IP address of the VM
* @param vmIp fixed IP address for the VM
* @param vmMac MAC address for the VM
* @param tunnelPort tunnel port number for the VM
* @param idx device ID for OVS of the other VM
* @param hostIpx host IP address of the other VM
* @param vmIpx fixed IP address of the other VM
* @param vmMacx MAC address for the other VM
* @param tunnelPortx x tunnel port number for other VM
*/
public void populateForwardingRuleForOtherCnode(String vni, DeviceId id, Ip4Address hostIp,
Ip4Address vmIp, MacAddress vmMac, PortNumber tunnelPort,
DeviceId idx, Ip4Address hostIpx,
Ip4Address vmIpx, MacAddress vmMacx, PortNumber tunnelPortx) {
setVxLanFlowRule(vni, id, hostIp, vmIp, vmMac, tunnelPort);
setVxLanFlowRule(vni, idx, hostIpx, vmIpx, vmMacx, tunnelPortx);
}
/**
* Populates the flow rules for DHCP packets from VMs.
*
* @param id device ID to set the rules
*/
private void setFlowRuleForDhcp(DeviceId id) {
TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
sBuilder.matchEthType(Ethernet.TYPE_IPV4)
.matchIPProtocol(IPv4.PROTOCOL_UDP)
.matchUdpDst(TpPort.tpPort(OpenstackSwitchingManager.DHCP_PORT));
tBuilder.setOutput(PortNumber.CONTROLLER);
ForwardingObjective fo = DefaultForwardingObjective.builder()
.withSelector(sBuilder.build())
.withTreatment(tBuilder.build())
.withPriority(5000)
.withFlag(ForwardingObjective.Flag.VERSATILE)
.fromApp(appId)
.add();
flowObjectiveService.forward(id, fo);
}
/**
* Populates the flow rules for ARP packets from VMs.
*
* @param id device ID to put rules.
*/
private void setFlowRuleForArp(DeviceId id) {
TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
sBuilder.matchEthType(Ethernet.TYPE_ARP);
tBuilder.setOutput(PortNumber.CONTROLLER);
ForwardingObjective fo = DefaultForwardingObjective.builder()
.withSelector(sBuilder.build())
.withTreatment(tBuilder.build())
.withPriority(5000)
.withFlag(ForwardingObjective.Flag.VERSATILE)
.fromApp(appId)
.add();
flowObjectiveService.forward(id, fo);
}
/**
* Sets the flow rules for traffic between VMs in the same Cnode.
*
* @param ip4Address VM IP address
* @param id device ID to put rules
* @param port VM port
* @param cidr subnet info of the VMs
*/
private void setFlowRuleForVMsInSameCnode(Ip4Address ip4Address, DeviceId id,
Port port, Ip4Prefix cidr) {
TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
sBuilder.matchEthType(Ethernet.TYPE_IPV4)
.matchIPDst(ip4Address.toIpPrefix())
.matchIPSrc(cidr);
tBuilder.setOutput(port.number());
ForwardingObjective fo = DefaultForwardingObjective.builder()
.withSelector(sBuilder.build())
.withTreatment(tBuilder.build())
.withPriority(5000)
.withFlag(ForwardingObjective.Flag.VERSATILE)
.fromApp(appId)
.add();
flowObjectiveService.forward(id, fo);
}
/**
* Sets the flow rules between traffic from VMs in different Cnode.
*
* @param vni VNI
* @param id device ID
* @param hostIp host IP of the VM
* @param vmIp fixed IP of the VM
* @param vmMac MAC address of the VM
* @param tunnelPort tunnel port to forward traffic to
*/
private void setVxLanFlowRule(String vni, DeviceId id, Ip4Address hostIp,
Ip4Address vmIp, MacAddress vmMac, PortNumber tunnelPort) {
TrafficSelector.Builder sBuilder = DefaultTrafficSelector.builder();
TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
sBuilder.matchEthType(Ethernet.TYPE_IPV4)
.matchIPDst(vmIp.toIpPrefix());
tBuilder.setTunnelId(Long.parseLong(vni))
//.setTunnelDst() <- for Nicira ext
//.setEthDst(vmMac)
.setOutput(tunnelPort);
ForwardingObjective fo = DefaultForwardingObjective.builder()
.withSelector(sBuilder.build())
.withTreatment(tBuilder.build())
.withPriority(5000)
.withFlag(ForwardingObjective.Flag.VERSATILE)
.fromApp(appId)
.add();
flowObjectiveService.forward(id, fo);
}
}
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