ONOS-5236 - Adapt SDN-IP to the new intent framework APIs
Change-Id: I89b60602247a25a1879e4394a60c57d480881f74
diff --git a/apps/sdnip/src/main/java/org/onosproject/sdnip/SdnIpFib.java b/apps/sdnip/src/main/java/org/onosproject/sdnip/SdnIpFib.java
index 1b6c7fa..d26d9de 100644
--- a/apps/sdnip/src/main/java/org/onosproject/sdnip/SdnIpFib.java
+++ b/apps/sdnip/src/main/java/org/onosproject/sdnip/SdnIpFib.java
@@ -39,6 +39,7 @@
import org.onosproject.incubator.net.routing.RouteListener;
import org.onosproject.incubator.net.routing.RouteService;
import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.FilteredConnectPoint;
import org.onosproject.net.flow.DefaultTrafficSelector;
import org.onosproject.net.flow.DefaultTrafficTreatment;
import org.onosproject.net.flow.TrafficSelector;
@@ -51,7 +52,6 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
@@ -160,35 +160,151 @@
}
ConnectPoint egressPort = egressInterface.connectPoint();
- Set<Interface> ingressInterfaces = new HashSet<>();
- Set<ConnectPoint> ingressPorts = new HashSet<>();
log.debug("Generating intent for prefix {}, next hop mac {}",
prefix, nextHopMacAddress);
- TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
+ Set<FilteredConnectPoint> ingressFilteredCPs = Sets.newHashSet();
- // Get ingress interfaces and ports
// TODO this should be only peering interfaces
interfaceService.getInterfaces().stream()
- .filter(intf -> !intf.equals(egressInterface))
- .filter(intf -> !intf.connectPoint().equals(egressPort))
.forEach(intf -> {
- ingressInterfaces.add(intf);
- ConnectPoint ingressPort = intf.connectPoint();
- ingressPorts.add(ingressPort);
+ // Get ony ingress interfaces with IPs configured
+ if (validIngressIntf(intf, egressInterface)) {
+ TrafficSelector.Builder selector =
+ buildIngressTrafficSelector(intf, prefix);
+ FilteredConnectPoint ingressFilteredCP =
+ new FilteredConnectPoint(intf.connectPoint(), selector.build());
+ ingressFilteredCPs.add(ingressFilteredCP);
+ }
});
- // By default the ingress traffic is not tagged
- VlanId ingressVlanId = VlanId.NONE;
+ // Build treatment: rewrite the destination MAC address
+ TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder()
+ .setEthDst(nextHopMacAddress);
- // Match VLAN Id ANY if the source VLAN Id is not null
- // TODO need to be able to set a different VLAN Id per ingress interface
- for (Interface intf : ingressInterfaces) {
- if (!intf.vlan().equals(VlanId.NONE)) {
- selector.matchVlanId(VlanId.ANY);
- ingressVlanId = intf.vlan();
+ // Build the egress selector for VLAN Id
+ TrafficSelector.Builder selector =
+ buildTrafficSelector(egressInterface);
+ FilteredConnectPoint egressFilteredCP =
+ new FilteredConnectPoint(egressPort, selector.build());
+
+ // Set priority
+ int priority =
+ prefix.prefixLength() * PRIORITY_MULTIPLIER + PRIORITY_OFFSET;
+
+ // Set key
+ Key key = Key.of(prefix.toString(), appId);
+
+ return MultiPointToSinglePointIntent.builder()
+ .appId(appId)
+ .key(key)
+ .filteredIngressPoints(ingressFilteredCPs)
+ .filteredEgressPoint(egressFilteredCP)
+ .treatment(treatment.build())
+ .priority(priority)
+ .constraints(CONSTRAINTS)
+ .build();
+ }
+
+ private void addInterface(Interface intf) {
+ synchronized (this) {
+ for (Map.Entry<IpPrefix, MultiPointToSinglePointIntent> entry : routeIntents.entrySet()) {
+ // Retrieve the IP prefix and affected intent
+ IpPrefix prefix = entry.getKey();
+ MultiPointToSinglePointIntent intent = entry.getValue();
+
+ // Add new ingress FilteredConnectPoint
+ Set<FilteredConnectPoint> ingressFilteredCPs =
+ Sets.newHashSet(intent.filteredIngressPoints());
+
+ // Create the new traffic selector
+ TrafficSelector.Builder selector =
+ buildIngressTrafficSelector(intf, prefix);
+
+ // Create the Filtered ConnectPoint and add it to the existing set
+ FilteredConnectPoint newIngressFilteredCP =
+ new FilteredConnectPoint(intf.connectPoint(), selector.build());
+ ingressFilteredCPs.add(newIngressFilteredCP);
+
+ // Create new intent
+ MultiPointToSinglePointIntent newIntent =
+ MultiPointToSinglePointIntent.builder(intent)
+ .filteredIngressPoints(ingressFilteredCPs)
+ .build();
+
+ routeIntents.put(entry.getKey(), newIntent);
+ intentSynchronizer.submit(newIntent);
}
}
+ }
+
+ /*
+ * Handles the case in which an existing interface gets removed.
+ */
+ private void removeInterface(Interface intf) {
+ synchronized (this) {
+ for (Map.Entry<IpPrefix, MultiPointToSinglePointIntent> entry : routeIntents.entrySet()) {
+ // Retrieve the IP prefix and intent possibly affected
+ IpPrefix prefix = entry.getKey();
+ MultiPointToSinglePointIntent intent = entry.getValue();
+
+ // The interface removed might be an ingress interface, so the
+ // selector needs to match on the interface tagging params and
+ // on the prefix
+ TrafficSelector.Builder ingressSelector =
+ buildIngressTrafficSelector(intf, prefix);
+ FilteredConnectPoint removedIngressFilteredCP =
+ new FilteredConnectPoint(intf.connectPoint(),
+ ingressSelector.build());
+
+ // The interface removed might be an egress interface, so the
+ // selector needs to match only on the interface tagging params
+ TrafficSelector.Builder selector = buildTrafficSelector(intf);
+ FilteredConnectPoint removedEgressFilteredCP =
+ new FilteredConnectPoint(intf.connectPoint(), selector.build());
+
+ if (intent.filteredEgressPoint().equals(removedEgressFilteredCP)) {
+ // The interface is an egress interface for the intent.
+ // This intent just lost its head. Remove it and let higher
+ // layer routing reroute
+ intentSynchronizer.withdraw(routeIntents.remove(entry.getKey()));
+ } else {
+ if (intent.filteredIngressPoints().contains(removedIngressFilteredCP)) {
+ // The FilteredConnectPoint is an ingress
+ // FilteredConnectPoint for the intent
+ Set<FilteredConnectPoint> ingressFilteredCPs =
+ Sets.newHashSet(intent.filteredIngressPoints());
+
+ // Remove FilteredConnectPoint from the existing set
+ ingressFilteredCPs.remove(removedIngressFilteredCP);
+
+ if (!ingressFilteredCPs.isEmpty()) {
+ // There are still ingress points. Create a new
+ // intent and resubmit
+ MultiPointToSinglePointIntent newIntent =
+ MultiPointToSinglePointIntent.builder(intent)
+ .filteredIngressPoints(ingressFilteredCPs)
+ .build();
+
+ routeIntents.put(entry.getKey(), newIntent);
+ intentSynchronizer.submit(newIntent);
+ } else {
+ // No more ingress FilteredConnectPoint. Withdraw
+ //the intent
+ intentSynchronizer.withdraw(routeIntents.remove(entry.getKey()));
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /*
+ * Builds an ingress traffic selector builder given an ingress interface and
+ * the IP prefix to be reached.
+ */
+ private TrafficSelector.Builder buildIngressTrafficSelector(Interface intf, IpPrefix prefix) {
+ TrafficSelector.Builder selector = buildTrafficSelector(intf);
// Match the destination IP prefix at the first hop
if (prefix.isIp4()) {
@@ -206,83 +322,33 @@
selector.matchIPv6Dst(prefix);
}
}
-
- // Rewrite the destination MAC address
- TrafficTreatment.Builder treatment = DefaultTrafficTreatment.builder()
- .setEthDst(nextHopMacAddress);
-
- // Set egress VLAN Id
- // TODO need to make the comparison with different ingress VLAN Ids
- if (!ingressVlanId.equals(egressInterface.vlan())) {
- if (egressInterface.vlan().equals(VlanId.NONE)) {
- treatment.popVlan();
- } else {
- treatment.setVlanId(egressInterface.vlan());
- }
- }
-
- // Set priority
- int priority =
- prefix.prefixLength() * PRIORITY_MULTIPLIER + PRIORITY_OFFSET;
-
- // Set key
- Key key = Key.of(prefix.toString(), appId);
-
- return MultiPointToSinglePointIntent.builder()
- .appId(appId)
- .key(key)
- .selector(selector.build())
- .treatment(treatment.build())
- .ingressPoints(ingressPorts)
- .egressPoint(egressPort)
- .priority(priority)
- .constraints(CONSTRAINTS)
- .build();
+ return selector;
}
- private void updateInterface(Interface intf) {
- synchronized (this) {
- for (Map.Entry<IpPrefix, MultiPointToSinglePointIntent> entry : routeIntents.entrySet()) {
- MultiPointToSinglePointIntent intent = entry.getValue();
- Set<ConnectPoint> ingress = Sets.newHashSet(intent.ingressPoints());
- ingress.add(intf.connectPoint());
+ /*
+ * Builds a traffic selector builder based on interface tagging settings.
+ */
+ private TrafficSelector.Builder buildTrafficSelector(Interface intf) {
+ TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
- MultiPointToSinglePointIntent newIntent =
- MultiPointToSinglePointIntent.builder(intent)
- .ingressPoints(ingress)
- .build();
-
- routeIntents.put(entry.getKey(), newIntent);
- intentSynchronizer.submit(newIntent);
- }
+ // TODO: Consider other tag types
+ // Match the VlanId if specified in the network interface configuration
+ VlanId vlanId = intf.vlan();
+ if (!vlanId.equals(VlanId.NONE)) {
+ selector.matchVlanId(vlanId);
}
+ return selector;
}
- private void removeInterface(Interface intf) {
- synchronized (this) {
- for (Map.Entry<IpPrefix, MultiPointToSinglePointIntent> entry : routeIntents.entrySet()) {
- MultiPointToSinglePointIntent intent = entry.getValue();
- if (intent.egressPoint().equals(intf.connectPoint())) {
- // This intent just lost its head. Remove it and let
- // higher layer routing reroute.
- intentSynchronizer.withdraw(routeIntents.remove(entry.getKey()));
- } else {
- if (intent.ingressPoints().contains(intf.connectPoint())) {
-
- Set<ConnectPoint> ingress = Sets.newHashSet(intent.ingressPoints());
- ingress.remove(intf.connectPoint());
-
- MultiPointToSinglePointIntent newIntent =
- MultiPointToSinglePointIntent.builder(intent)
- .ingressPoints(ingress)
- .build();
-
- routeIntents.put(entry.getKey(), newIntent);
- intentSynchronizer.submit(newIntent);
- }
- }
- }
+ // Check if the interface is an ingress interface with IPs configured
+ private boolean validIngressIntf(Interface intf, Interface egressInterface) {
+ if (!intf.equals(egressInterface) &&
+ !intf.ipAddressesList().isEmpty() &&
+ // TODO: An egress point might have two routers connected on different interfaces
+ !intf.connectPoint().equals(egressInterface.connectPoint())) {
+ return true;
}
+ return false;
}
private class InternalRouteListener implements RouteListener {
@@ -308,9 +374,11 @@
public void event(InterfaceEvent event) {
switch (event.type()) {
case INTERFACE_ADDED:
- updateInterface(event.subject());
+ addInterface(event.subject());
break;
case INTERFACE_UPDATED:
+ removeInterface(event.prevSubject());
+ addInterface(event.subject());
break;
case INTERFACE_REMOVED:
removeInterface(event.subject());