CORD-512 Support vSG <-> vRouter default route
- Support multiple subnets per port. getIpPort() will only return the first non-/32 and non-/0 subnet
/32 is used as vSG subnet
/0 is used as default gateway
- Support multiple L3 unicast group on a single port
Change the way to generate the group ID and group key
- Special case for 0.0.0.0 host. Push a /0 to IP table instead of /32
- Implement vRouterConfig
Put VR MAC to TMAC table of all leaves when config added
When processEthDst see PortNumber.ANY in key, match ETH_DST only
- For OFDPA, wipe existing instruction before sending to controller
So packet that misses L3 unicast table won't be sent to controller twice
- For SpringOpenTTP, pop VLAN before sending to controller
- Move several constant definitions to SegmentRoutingService
- Add minimum priority for IP rules such that /0 won't collide with zero priority default rules
- Update the config sample
Use VLAN=-1 for hosts
Add example for default route
Change-Id: Id751697ce36a7e5c13b3859350ff21b585c38525
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/NetworkConfigEventHandler.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/NetworkConfigEventHandler.java
new file mode 100644
index 0000000..afb7ec9
--- /dev/null
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/NetworkConfigEventHandler.java
@@ -0,0 +1,156 @@
+package org.onosproject.segmentrouting;
+
+import com.google.common.collect.ImmutableSet;
+import org.onlab.packet.MacAddress;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.config.NetworkConfigEvent;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.flow.criteria.Criteria;
+import org.onosproject.net.flowobjective.DefaultFilteringObjective;
+import org.onosproject.net.flowobjective.FilteringObjective;
+import org.onosproject.segmentrouting.config.DeviceConfigNotFoundException;
+import org.onosproject.segmentrouting.config.SegmentRoutingAppConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Handles network config events.
+ */
+public class NetworkConfigEventHandler {
+ private static final Logger log = LoggerFactory.getLogger(NetworkConfigEventHandler.class);
+ private final SegmentRoutingManager srManager;
+ private final DeviceService deviceService;
+
+ /**
+ * Constructs Network Config Event Handler.
+ *
+ * @param srManager instance of {@link SegmentRoutingManager}
+ */
+ public NetworkConfigEventHandler(SegmentRoutingManager srManager) {
+ this.srManager = srManager;
+ this.deviceService = srManager.deviceService;
+ }
+
+ /**
+ * Processes vRouter config added event.
+ *
+ * @param event network config added event
+ */
+ protected void processVRouterConfigAdded(NetworkConfigEvent event) {
+ log.info("Processing vRouter CONFIG_ADDED");
+ SegmentRoutingAppConfig config = (SegmentRoutingAppConfig) event.config().get();
+ deviceService.getAvailableDevices().forEach(device -> {
+ populateVRouter(device.id(), getMacAddresses(config));
+ });
+ }
+
+ /**
+ * Processes vRouter config updated event.
+ *
+ * @param event network config updated event
+ */
+ protected void processVRouterConfigUpdated(NetworkConfigEvent event) {
+ log.info("Processing vRouter CONFIG_UPDATED");
+ SegmentRoutingAppConfig config = (SegmentRoutingAppConfig) event.config().get();
+ SegmentRoutingAppConfig prevConfig = (SegmentRoutingAppConfig) event.prevConfig().get();
+ deviceService.getAvailableDevices().forEach(device -> {
+ Set<MacAddress> macAddresses = getMacAddresses(config);
+ Set<MacAddress> prevMacAddresses = getMacAddresses(prevConfig);
+ // Avoid removing and re-adding unchanged MAC addresses since
+ // FlowObjective does not guarantee the execution order.
+ Set<MacAddress> sameMacAddresses = new HashSet<>(macAddresses);
+ sameMacAddresses.retainAll(prevMacAddresses);
+ macAddresses.removeAll(sameMacAddresses);
+ prevMacAddresses.removeAll(sameMacAddresses);
+
+ revokeVRouter(device.id(), prevMacAddresses);
+ populateVRouter(device.id(), macAddresses);
+ });
+
+ }
+
+ /**
+ * Processes vRouter config removed event.
+ *
+ * @param event network config removed event
+ */
+ protected void processVRouterConfigRemoved(NetworkConfigEvent event) {
+ log.info("Processing vRouter CONFIG_REMOVED");
+ SegmentRoutingAppConfig prevConfig = (SegmentRoutingAppConfig) event.prevConfig().get();
+ deviceService.getAvailableDevices().forEach(device -> {
+ revokeVRouter(device.id(), getMacAddresses(prevConfig));
+ });
+ }
+
+ /**
+ * Populates initial vRouter rules.
+ *
+ * @param deviceId device ID
+ */
+ public void initVRouters(DeviceId deviceId) {
+ SegmentRoutingAppConfig config =
+ srManager.cfgService.getConfig(srManager.appId, SegmentRoutingAppConfig.class);
+ populateVRouter(deviceId, getMacAddresses(config));
+ }
+
+ private void populateVRouter(DeviceId deviceId, Set<MacAddress> pendingAdd) {
+ if (!isEdge(deviceId)) {
+ return;
+ }
+ getVRouterFlowObjBuilders(pendingAdd).forEach(foBuilder -> {
+ srManager.flowObjectiveService.
+ filter(deviceId, foBuilder.add(new SRObjectiveContext(deviceId,
+ SRObjectiveContext.ObjectiveType.FILTER)));
+ });
+ }
+
+ private void revokeVRouter(DeviceId deviceId, Set<MacAddress> pendingRemove) {
+ if (!isEdge(deviceId)) {
+ return;
+ }
+ getVRouterFlowObjBuilders(pendingRemove).forEach(foBuilder -> {
+ srManager.flowObjectiveService.
+ filter(deviceId, foBuilder.remove(new SRObjectiveContext(deviceId,
+ SRObjectiveContext.ObjectiveType.FILTER)));
+ });
+ }
+
+ private Set<FilteringObjective.Builder> getVRouterFlowObjBuilders(Set<MacAddress> macAddresses) {
+ ImmutableSet.Builder<FilteringObjective.Builder> setBuilder = ImmutableSet.builder();
+ macAddresses.forEach(macAddress -> {
+ FilteringObjective.Builder fobuilder = DefaultFilteringObjective.builder();
+ fobuilder.withKey(Criteria.matchInPort(PortNumber.ANY))
+ .addCondition(Criteria.matchEthDst(macAddress))
+ .permit()
+ .withPriority(SegmentRoutingService.DEFAULT_PRIORITY)
+ .fromApp(srManager.appId);
+ setBuilder.add(fobuilder);
+ });
+ return setBuilder.build();
+ }
+
+ private Set<MacAddress> getMacAddresses(SegmentRoutingAppConfig config) {
+ if (config == null) {
+ return ImmutableSet.of();
+ }
+
+ HashSet<MacAddress> macAddresses = new HashSet<>();
+ config.vRouterMacs().forEach(mac -> {
+ macAddresses.add(mac);
+ });
+ return ImmutableSet.copyOf(macAddresses);
+ }
+
+ private boolean isEdge(DeviceId deviceId) {
+ try {
+ if (srManager.deviceConfiguration.isEdgeDevice(deviceId)) {
+ return true;
+ }
+ } catch (DeviceConfigNotFoundException e) { }
+ return false;
+ }
+}