Adding a corsa pipeliner which extends the ovs-corsa pipeliner

Change-Id: Iea0b1949232de20abd60717a8dc150b5c133bd7a
diff --git a/drivers/src/main/java/org/onosproject/driver/pipeline/CorsaPipeline.java b/drivers/src/main/java/org/onosproject/driver/pipeline/CorsaPipeline.java
new file mode 100644
index 0000000..616eac1
--- /dev/null
+++ b/drivers/src/main/java/org/onosproject/driver/pipeline/CorsaPipeline.java
@@ -0,0 +1,58 @@
+package org.onosproject.driver.pipeline;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import org.onlab.packet.Ethernet;
+import org.onosproject.net.flow.DefaultFlowRule;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.FlowRule;
+import org.onosproject.net.flow.FlowRuleOperations;
+import org.onosproject.net.flow.FlowRuleOperationsContext;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.slf4j.Logger;
+
+public class CorsaPipeline extends OVSCorsaPipeline {
+
+    private final Logger log = getLogger(getClass());
+
+    @Override
+    protected void processVlanMplsTable(boolean install) {
+        TrafficSelector.Builder selector = DefaultTrafficSelector.builder();
+        TrafficTreatment.Builder treatment = DefaultTrafficTreatment
+                .builder();
+        FlowRuleOperations.Builder ops = FlowRuleOperations.builder();
+        FlowRule rule;
+        // corsa uses non-OF-standard way to match on presence of VLAN tags
+        selector.matchEthType(Ethernet.TYPE_VLAN);
+        treatment.transition(VLAN_TABLE);
+
+        rule = DefaultFlowRule.builder()
+                .forDevice(deviceId)
+                .withSelector(selector.build())
+                .withTreatment(treatment.build())
+                .withPriority(CONTROLLER_PRIORITY)
+                .fromApp(appId)
+                .makePermanent()
+                .forTable(VLAN_MPLS_TABLE).build();
+
+
+        ops = install ? ops.add(rule) : ops.remove(rule);
+
+        flowRuleService.apply(ops.build(new FlowRuleOperationsContext() {
+            @Override
+            public void onSuccess(FlowRuleOperations ops) {
+                log.info("Provisioned vlan/mpls table");
+            }
+
+            @Override
+            public void onError(FlowRuleOperations ops) {
+                log.info(
+                        "Failed to provision vlan/mpls table");
+            }
+        }));
+
+    }
+
+}