1 files changed, 84 insertions, 0 deletions
diff --git a/framework/src/onos/drivers/src/main/java/org/onosproject/driver/extensions/NiciraExtensionInterpreter.java b/framework/src/onos/drivers/src/main/java/org/onosproject/driver/extensions/NiciraExtensionInterpreter.java
new file mode 100644
index 00000000..082c5a6d
--- /dev/null
+++ b/framework/src/onos/drivers/src/main/java/org/onosproject/driver/extensions/NiciraExtensionInterpreter.java
@@ -0,0 +1,84 @@
+/*
+ * 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.driver.extensions;
+
+import org.onlab.packet.Ip4Address;
+import org.onosproject.net.behaviour.ExtensionResolver;
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
+import org.onosproject.net.flow.instructions.ExtensionInstruction;
+import org.onosproject.net.flow.instructions.ExtensionType;
+import org.onosproject.openflow.controller.ExtensionInterpreter;
+import org.projectfloodlight.openflow.protocol.OFActionType;
+import org.projectfloodlight.openflow.protocol.OFFactory;
+import org.projectfloodlight.openflow.protocol.action.OFAction;
+import org.projectfloodlight.openflow.protocol.action.OFActionSetField;
+import org.projectfloodlight.openflow.protocol.oxm.OFOxm;
+import org.projectfloodlight.openflow.protocol.oxm.OFOxmTunnelIpv4Dst;
+import org.projectfloodlight.openflow.types.IPv4Address;
+
+/**
+ * Interpreter for Nicira OpenFlow extensions.
+ */
+public class NiciraExtensionInterpreter extends AbstractHandlerBehaviour
+        implements ExtensionInterpreter, ExtensionResolver {
+
+    @Override
+    public boolean supported(ExtensionType extensionType) {
+        if (extensionType.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    public OFAction mapInstruction(OFFactory factory, ExtensionInstruction extensionInstruction) {
+        ExtensionType type = extensionInstruction.type();
+        if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
+            NiciraSetTunnelDst tunnelDst = (NiciraSetTunnelDst) extensionInstruction;
+            return factory.actions().setField(factory.oxms().tunnelIpv4Dst(
+                    IPv4Address.of(tunnelDst.tunnelDst().toInt())));
+        }
+        return null;
+    }
+
+    @Override
+    public ExtensionInstruction mapAction(OFAction action) {
+        if (action.getType().equals(OFActionType.SET_FIELD)) {
+            OFActionSetField setFieldAction = (OFActionSetField) action;
+            OFOxm<?> oxm = setFieldAction.getField();
+            switch (oxm.getMatchField().id) {
+            case TUNNEL_IPV4_DST:
+                OFOxmTunnelIpv4Dst tunnelIpv4Dst = (OFOxmTunnelIpv4Dst) oxm;
+                return new NiciraSetTunnelDst(Ip4Address.valueOf(tunnelIpv4Dst.getValue().getInt()));
+            default:
+                throw new UnsupportedOperationException(
+                        "Driver does not support extension type " + oxm.getMatchField().id);
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public ExtensionInstruction getExtensionInstruction(ExtensionType type) {
+        if (type.equals(ExtensionType.ExtensionTypes.NICIRA_SET_TUNNEL_DST.type())) {
+            return new NiciraSetTunnelDst();
+        }
+        throw new UnsupportedOperationException(
+                "Driver does not support extension type " + type.toString());
+    }
+}