Action redesign: use the new ActionInfo Genius classes
[netvirt.git] / vpnservice / aclservice / impl / src / main / java / org / opendaylight / netvirt / aclservice / listeners / AclNodeListener.java
index 11d2ec3fd962fcbce6653416aca5328400f56304..10318917ec5345165ff49bdf0260403530e0eceb 100644 (file)
@@ -11,20 +11,34 @@ package org.opendaylight.netvirt.aclservice.listeners;
 import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.List;
+import javax.annotation.PostConstruct;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.opendaylight.controller.md.sal.binding.api.DataBroker;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
 import org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase;
 import org.opendaylight.genius.mdsalutil.ActionInfo;
-import org.opendaylight.genius.mdsalutil.ActionType;
 import org.opendaylight.genius.mdsalutil.FlowEntity;
 import org.opendaylight.genius.mdsalutil.InstructionInfo;
 import org.opendaylight.genius.mdsalutil.InstructionType;
 import org.opendaylight.genius.mdsalutil.MDSALUtil;
+import org.opendaylight.genius.mdsalutil.MatchFieldType;
 import org.opendaylight.genius.mdsalutil.MatchInfo;
+import org.opendaylight.genius.mdsalutil.MatchInfoBase;
+import org.opendaylight.genius.mdsalutil.NwConstants;
+import org.opendaylight.genius.mdsalutil.NxMatchFieldType;
+import org.opendaylight.genius.mdsalutil.NxMatchInfo;
+import org.opendaylight.genius.mdsalutil.actions.ActionDrop;
+import org.opendaylight.genius.mdsalutil.actions.ActionNxResubmit;
 import org.opendaylight.genius.mdsalutil.interfaces.IMdsalApiManager;
+import org.opendaylight.genius.mdsalutil.packet.IPProtocols;
 import org.opendaylight.netvirt.aclservice.utils.AclConstants;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.FlowCapableNode;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.Nodes;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
 import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.NodeKey;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.config.rev160806.AclserviceConfig;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netvirt.aclservice.config.rev160806.AclserviceConfig.SecurityGroupMode;
 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -32,83 +46,61 @@ import org.slf4j.LoggerFactory;
 /**
  * Listener to handle flow capable node updates.
  */
+@Singleton
+@SuppressWarnings("deprecation")
 public class AclNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapableNode, AclNodeListener>
         implements AutoCloseable {
 
-    /** The Constant LOG. */
     private static final Logger LOG = LoggerFactory.getLogger(AclNodeListener.class);
 
-    /** The mdsal manager. */
-    private IMdsalApiManager mdsalManager;
+    private final IMdsalApiManager mdsalManager;
+    private final AclserviceConfig config;
+    private final DataBroker dataBroker;
 
-    /**
-     * Instantiates a new acl node listener.
-     *
-     * @param mdsalManager the mdsal manager
-     */
-    public AclNodeListener(final IMdsalApiManager mdsalManager) {
+    private SecurityGroupMode securityGroupMode = null;
+
+    @Inject
+    public AclNodeListener(final IMdsalApiManager mdsalManager, DataBroker dataBroker, AclserviceConfig config) {
         super(FlowCapableNode.class, AclNodeListener.class);
 
         this.mdsalManager = mdsalManager;
+        this.dataBroker = dataBroker;
+        this.config = config;
+    }
+
+    @Override
+    @PostConstruct
+    public void init() {
+        LOG.info("{} start", getClass().getSimpleName());
+        if (config != null) {
+            this.securityGroupMode = config.getSecurityGroupMode();
+        }
+        registerListener(LogicalDatastoreType.OPERATIONAL, dataBroker);
+        LOG.info("AclserviceConfig: {}", this.config);
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see
-     * org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#
-     * getWildCardPath()
-     */
     @Override
     protected InstanceIdentifier<FlowCapableNode> getWildCardPath() {
         return InstanceIdentifier.create(Nodes.class).child(Node.class).augmentation(FlowCapableNode.class);
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see
-     * org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#
-     * remove(org.opendaylight.yangtools.yang.binding.InstanceIdentifier,
-     * org.opendaylight.yangtools.yang.binding.DataObject)
-     */
     @Override
     protected void remove(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModification) {
         // do nothing
-
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see
-     * org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#
-     * update(org.opendaylight.yangtools.yang.binding.InstanceIdentifier,
-     * org.opendaylight.yangtools.yang.binding.DataObject,
-     * org.opendaylight.yangtools.yang.binding.DataObject)
-     */
     @Override
     protected void update(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModificationBefore,
             FlowCapableNode dataObjectModificationAfter) {
         // do nothing
-
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see
-     * org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#
-     * add(org.opendaylight.yangtools.yang.binding.InstanceIdentifier,
-     * org.opendaylight.yangtools.yang.binding.DataObject)
-     */
     @Override
     protected void add(InstanceIdentifier<FlowCapableNode> key, FlowCapableNode dataObjectModification) {
         LOG.trace("FlowCapableNode Added: key: {}", key);
-
         NodeKey nodeKey = key.firstKeyOf(Node.class);
         BigInteger dpnId = MDSALUtil.getDpnIdFromNodeName(nodeKey.getId());
-        createTableMissEntries(dpnId);
+        createTableDefaultEntries(dpnId);
     }
 
     /**
@@ -116,9 +108,26 @@ public class AclNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapable
      *
      * @param dpnId the dpn id
      */
-    private void createTableMissEntries(BigInteger dpnId) {
-        addIngressAclTableMissFlow(dpnId);
-        addEgressAclTableMissFlow(dpnId);
+    private void createTableDefaultEntries(BigInteger dpnId) {
+        LOG.info("Adding default ACL entries for mode: "
+                + (securityGroupMode == null ? SecurityGroupMode.Stateful : securityGroupMode));
+        if (securityGroupMode == null || securityGroupMode == SecurityGroupMode.Stateful) {
+            addIngressAclTableMissFlow(dpnId);
+            addEgressAclTableMissFlow(dpnId);
+            addConntrackRules(dpnId, NwConstants.LPORT_DISPATCHER_TABLE, NwConstants.INGRESS_ACL_FILTER_TABLE,
+                    NwConstants.ADD_FLOW);
+            addConntrackRules(dpnId, NwConstants.EGRESS_LPORT_DISPATCHER_TABLE, NwConstants.EGRESS_ACL_FILTER_TABLE,
+                    NwConstants.ADD_FLOW);
+        } else if (securityGroupMode == SecurityGroupMode.Transparent) {
+            addTransparentIngressAclTableMissFlow(dpnId);
+            addTransparentEgressAclTableMissFlow(dpnId);
+        } else if (securityGroupMode == SecurityGroupMode.Stateless) {
+            addStatelessIngressAclTableMissFlow(dpnId);
+            addStatelessEgressAclTableMissFlow(dpnId);
+        } else if (securityGroupMode == SecurityGroupMode.Learn) {
+            addLearnIngressAclTableMissFlow(dpnId);
+            addLearnEgressAclTableMissFlow(dpnId);
+        }
     }
 
     /**
@@ -130,22 +139,302 @@ public class AclNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapable
         List<MatchInfo> mkMatches = new ArrayList<>();
         List<InstructionInfo> mkInstructions = new ArrayList<>();
         List<ActionInfo> actionsInfos = new ArrayList<>();
-        actionsInfos.add(new ActionInfo(ActionType.drop_action, new String[] {}));
+        actionsInfos.add(new ActionDrop());
         mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 
-        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, AclConstants.INGRESS_ACL_TABLE_ID,
-                getTableMissFlowId(AclConstants.INGRESS_ACL_TABLE_ID), 0, "Ingress ACL Table Miss Flow", 0, 0,
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE), 0, "Ingress ACL Table Miss Flow", 0, 0,
                 AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
         mdsalManager.installFlow(flowEntity);
 
-        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, AclConstants.INGRESS_ACL_NEXT_TABLE_ID,
-                getTableMissFlowId(AclConstants.INGRESS_ACL_NEXT_TABLE_ID), 0, "Ingress ACL Table Miss Flow", 0, 0,
-                AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_FILTER_TABLE), 0, "Ingress ACL Filter Table Miss Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
         mdsalManager.installFlow(nextTblFlowEntity);
 
         LOG.debug("Added Ingress ACL Table Miss Flows for dpn {}", dpId);
     }
 
+    private void addLearnEgressAclTableMissFlow(BigInteger dpId) {
+        List<InstructionInfo> mkInstructions = new ArrayList<>();
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(NwConstants.EGRESS_LEARN_TABLE));
+        actionsInfos.add(new ActionNxResubmit(NwConstants.EGRESS_LEARN2_TABLE));
+        mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        FlowEntity doubleResubmitTable = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                "RESUB-" + getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_PRIORITY, "Egress resubmit ACL Table Block", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
+        mdsalManager.installFlow(doubleResubmitTable);
+
+        mkMatches = new ArrayList<>();
+        mkInstructions = new ArrayList<>();
+        actionsInfos = new ArrayList<>();
+        actionsInfos.add(new ActionDrop());
+        mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_LEARN2_TABLE,
+                "LEARN-" + getTableMissFlowId(NwConstants.EGRESS_LEARN2_TABLE), 0,
+                "Egress Learn2 ACL Table Miss Flow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
+        mdsalManager.installFlow(flowEntity);
+
+        List<NxMatchInfo> nxMkMatches = new ArrayList<>();
+        nxMkMatches.add(new NxMatchInfo(NxMatchFieldType.nxm_reg_5,
+                new long[] {Long.valueOf(AclConstants.LEARN_MATCH_REG_VALUE)}));
+
+        short dispatcherTableId = NwConstants.EGRESS_LPORT_DISPATCHER_TABLE;
+        List<InstructionInfo> instructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_LEARN2_TABLE,
+                "LEARN2-REG-" + getTableMissFlowId(NwConstants.EGRESS_LEARN2_TABLE),
+                AclConstants.PROTO_MATCH_PRIORITY, "Egress Learn2 ACL Table match reg Flow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, nxMkMatches, instructions);
+        mdsalManager.installFlow(flowEntity);
+        LOG.debug("Added learn ACL Table Miss Flows for dpn {}", dpId);
+    }
+
+    private void addLearnIngressAclTableMissFlow(BigInteger dpId) {
+        List<InstructionInfo> mkInstructions = new ArrayList<>();
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(NwConstants.INGRESS_LEARN_TABLE));
+        actionsInfos.add(new ActionNxResubmit(NwConstants.INGRESS_LEARN2_TABLE));
+        mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        FlowEntity doubleResubmitTable = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                "RESUB-" + getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_PRIORITY, "Ingress resubmit ACL Table Block", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
+        mdsalManager.installFlow(doubleResubmitTable);
+
+        mkMatches = new ArrayList<>();
+        mkInstructions = new ArrayList<>();
+        actionsInfos = new ArrayList<>();
+        actionsInfos.add(new ActionDrop());
+        mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_LEARN2_TABLE,
+                "LEARN-" + getTableMissFlowId(NwConstants.INGRESS_LEARN2_TABLE), 0,
+                "Ingress Learn2 ACL Table Miss Flow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
+        mdsalManager.installFlow(flowEntity);
+
+        List<NxMatchInfo> nxMkMatches = new ArrayList<>();
+        nxMkMatches.add(new NxMatchInfo(NxMatchFieldType.nxm_reg_5,
+                new long[] {Long.valueOf(AclConstants.LEARN_MATCH_REG_VALUE)}));
+
+        short dispatcherTableId = NwConstants.LPORT_DISPATCHER_TABLE;
+        List<InstructionInfo> instructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_LEARN2_TABLE,
+                "LEARN2-REG-" + getTableMissFlowId(NwConstants.INGRESS_LEARN2_TABLE),
+                AclConstants.PROTO_MATCH_PRIORITY, "Egress Learn2 ACL Table match reg Flow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, nxMkMatches, instructions);
+        mdsalManager.installFlow(flowEntity);
+        LOG.debug("Added learn ACL Table Miss Flows for dpn {}", dpId);
+
+    }
+
+    /**
+     * Adds the ingress acl table transparent flow.
+     *
+     * @param dpId the dp id
+     */
+    private void addTransparentIngressAclTableMissFlow(BigInteger dpId) {
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        List<InstructionInfo> allowAllInstructions = new ArrayList<>();
+        allowAllInstructions.add(
+            new InstructionInfo(InstructionType.goto_table,
+                    new long[] { NwConstants.INGRESS_ACL_FILTER_TABLE }));
+
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE), 0, "Ingress ACL Table allow all Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, allowAllInstructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        short dispatcherTableId = NwConstants.LPORT_DISPATCHER_TABLE;
+
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        List<InstructionInfo> dispatcherInstructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        dispatcherInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_FILTER_TABLE), 0, "Ingress ACL Filter Table allow all Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, dispatcherInstructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        LOG.debug("Added Transparent Ingress ACL Table allow all Flows for dpn {}", dpId);
+    }
+
+    /**
+     * Adds the egress acl table transparent flow.
+     *
+     * @param dpId the dp id
+     */
+    private void addTransparentEgressAclTableMissFlow(BigInteger dpId) {
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        List<InstructionInfo> allowAllInstructions = new ArrayList<>();
+        allowAllInstructions.add(
+            new InstructionInfo(InstructionType.goto_table,
+                    new long[] { NwConstants.EGRESS_ACL_FILTER_TABLE }));
+
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE), 0, "Egress ACL Table allow all Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, allowAllInstructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        short dispatcherTableId =  NwConstants.EGRESS_LPORT_DISPATCHER_TABLE;
+
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        List<InstructionInfo> instructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_FILTER_TABLE), 0, "Egress ACL Filter Table allow all Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, instructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        LOG.debug("Added Transparent Egress ACL Table allow all Flows for dpn {}", dpId);
+    }
+
+    /**
+     * Adds the ingress acl table miss flow.
+     *
+     * @param dpId the dp id
+     */
+    private void addStatelessIngressAclTableMissFlow(BigInteger dpId) {
+        List<MatchInfo> synMatches = new ArrayList<>();
+        synMatches.add(new MatchInfo(MatchFieldType.eth_type,
+                new long[] { NwConstants.ETHTYPE_IPV4 }));
+        synMatches.add(new MatchInfo(MatchFieldType.ip_proto,
+                new long[] { IPProtocols.TCP.intValue() }));
+
+        synMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN }));
+
+        List<ActionInfo> dropActionsInfos = new ArrayList<>();
+        dropActionsInfos.add(new ActionDrop());
+        List<InstructionInfo> synInstructions = new ArrayList<>();
+        synInstructions.add(new InstructionInfo(InstructionType.apply_actions, dropActionsInfos));
+
+        FlowEntity synFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                "SYN-" + getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_SYN_DROP_PRIORITY, "Ingress Syn ACL Table Block", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, synMatches, synInstructions);
+        mdsalManager.installFlow(synFlowEntity);
+
+        synMatches = new ArrayList<>();
+        synMatches.add(new MatchInfo(MatchFieldType.eth_type,
+                new long[] { NwConstants.ETHTYPE_IPV4 }));
+        synMatches.add(new MatchInfo(MatchFieldType.ip_proto,
+                new long[] { IPProtocols.TCP.intValue() }));
+        synMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN_ACK }));
+
+        List<InstructionInfo> allowAllInstructions = new ArrayList<>();
+        allowAllInstructions.add(
+            new InstructionInfo(InstructionType.goto_table,
+                    new long[] { NwConstants.EGRESS_ACL_FILTER_TABLE }));
+
+        FlowEntity synAckFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                "SYN-ACK-ALLOW-" + getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_SYN_ACK_ALLOW_PRIORITY, "Ingress Syn Ack ACL Table Allow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, synMatches, allowAllInstructions);
+        mdsalManager.installFlow(synAckFlowEntity);
+
+
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_TABLE), 0, "Ingress Stateless ACL Table Miss Flow",
+                0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches, allowAllInstructions);
+        mdsalManager.installFlow(flowEntity);
+
+        short dispatcherTableId =  NwConstants.EGRESS_LPORT_DISPATCHER_TABLE;
+
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        List<InstructionInfo> instructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.EGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.EGRESS_ACL_FILTER_TABLE), 0,
+                "Ingress Stateless Next ACL Table Miss Flow", 0, 0, AclConstants.COOKIE_ACL_BASE,
+                mkMatches, instructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        LOG.debug("Added Stateless Ingress ACL Table Miss Flows for dpn {}.", dpId);
+    }
+
+    /**
+     * Adds the stateless egress acl table miss flow.
+     *
+     * @param dpId the dp id
+     */
+    private void addStatelessEgressAclTableMissFlow(BigInteger dpId) {
+        List<InstructionInfo> allowAllInstructions = new ArrayList<>();
+        allowAllInstructions.add(
+                new InstructionInfo(InstructionType.goto_table, new long[] { NwConstants.INGRESS_ACL_FILTER_TABLE }));
+
+        List<MatchInfo> synMatches = new ArrayList<>();
+        synMatches.add(new MatchInfo(MatchFieldType.eth_type,
+                new long[] { NwConstants.ETHTYPE_IPV4 }));
+        synMatches.add(new MatchInfo(MatchFieldType.ip_proto,
+                new long[] { IPProtocols.TCP.intValue() }));
+        synMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN }));
+
+        List<ActionInfo> synActionsInfos = new ArrayList<>();
+        synActionsInfos.add(new ActionDrop());
+        List<InstructionInfo> synInstructions = new ArrayList<>();
+        synInstructions.add(new InstructionInfo(InstructionType.apply_actions, synActionsInfos));
+
+        FlowEntity synFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                "SYN-" + getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_SYN_DROP_PRIORITY, "Egress Syn ACL Table Block", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, synMatches, synInstructions);
+        mdsalManager.installFlow(synFlowEntity);
+
+        synMatches = new ArrayList<>();
+        synMatches.add(new MatchInfo(MatchFieldType.eth_type,
+                new long[] { NwConstants.ETHTYPE_IPV4 }));
+        synMatches.add(new MatchInfo(MatchFieldType.ip_proto,
+                new long[] { IPProtocols.TCP.intValue() }));
+        synMatches.add(new MatchInfo(MatchFieldType.tcp_flags, new long[] { AclConstants.TCP_FLAG_SYN_ACK }));
+
+        FlowEntity synAckFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                "SYN-ACK-ALLOW-" + getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE),
+                AclConstants.PROTO_MATCH_SYN_ACK_ALLOW_PRIORITY, "Egress Syn Ack ACL Table Allow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, synMatches, allowAllInstructions);
+        mdsalManager.installFlow(synAckFlowEntity);
+
+        List<MatchInfo> mkMatches = new ArrayList<>();
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE), 0, "Egress Stateless ACL Table Miss Flow", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, mkMatches, allowAllInstructions);
+        mdsalManager.installFlow(flowEntity);
+
+        short dispatcherTableId = NwConstants.LPORT_DISPATCHER_TABLE;
+
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        List<InstructionInfo> dispatcherInstructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        dispatcherInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_FILTER_TABLE), 0,
+                "Egress Stateless Next ACL Table Miss Flow", 0, 0, AclConstants.COOKIE_ACL_BASE, mkMatches,
+                dispatcherInstructions);
+        mdsalManager.installFlow(nextTblFlowEntity);
+
+        LOG.debug("Added Stateless Egress ACL Table Miss Flows for dpn {}", dpId);
+    }
+
     /**
      * Adds the egress acl table miss flow.
      *
@@ -155,22 +444,132 @@ public class AclNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapable
         List<MatchInfo> mkMatches = new ArrayList<>();
         List<InstructionInfo> mkInstructions = new ArrayList<>();
         List<ActionInfo> actionsInfos = new ArrayList<>();
-        actionsInfos.add(new ActionInfo(ActionType.drop_action, new String[] {}));
+        actionsInfos.add(new ActionDrop());
         mkInstructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
 
-        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, AclConstants.EGRESS_ACL_TABLE_ID,
-                getTableMissFlowId(AclConstants.EGRESS_ACL_TABLE_ID), 0, "Egress ACL Table Miss Flow", 0, 0,
+        FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_TABLE), 0, "Egress ACL Table Miss Flow", 0, 0,
                 AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
         mdsalManager.installFlow(flowEntity);
 
-        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, AclConstants.EGRESS_ACL_NEXT_TABLE_ID,
-                getTableMissFlowId(AclConstants.EGRESS_ACL_NEXT_TABLE_ID), 0, "Egress ACL Table Miss Flow", 0, 0,
+        FlowEntity nextTblFlowEntity = MDSALUtil.buildFlowEntity(dpId, NwConstants.INGRESS_ACL_FILTER_TABLE,
+                getTableMissFlowId(NwConstants.INGRESS_ACL_FILTER_TABLE), 0, "Egress ACL Table Miss Flow", 0, 0,
                 AclConstants.COOKIE_ACL_BASE, mkMatches, mkInstructions);
         mdsalManager.installFlow(nextTblFlowEntity);
 
         LOG.debug("Added Egress ACL Table Miss Flows for dpn {}", dpId);
     }
 
+    private void addConntrackRules(BigInteger dpnId, short dispatcherTableId,short tableId, int write) {
+        programConntrackForwardRule(dpnId, AclConstants.CT_STATE_TRACKED_EXIST_PRIORITY,
+            "Tracked_Established", AclConstants.TRACKED_EST_CT_STATE, AclConstants.TRACKED_EST_CT_STATE_MASK,
+            dispatcherTableId, tableId, write );
+        programConntrackForwardRule(dpnId, AclConstants.CT_STATE_TRACKED_EXIST_PRIORITY,"Tracked_Related", AclConstants
+            .TRACKED_REL_CT_STATE, AclConstants.TRACKED_REL_CT_STATE_MASK, dispatcherTableId, tableId, write );
+        programConntrackDropRule(dpnId, AclConstants.CT_STATE_NEW_PRIORITY_DROP,"Tracked_New",
+            AclConstants.TRACKED_NEW_CT_STATE, AclConstants.TRACKED_NEW_CT_STATE_MASK, tableId, write );
+        programConntrackDropRule(dpnId, AclConstants.CT_STATE_TRACKED_EXIST_PRIORITY, "Tracked_Invalid",
+            AclConstants.TRACKED_INV_CT_STATE, AclConstants.TRACKED_INV_CT_STATE_MASK, tableId, write );
+
+    }
+
+    /**
+     * Adds the rule to forward the packets known packets.
+     *
+     * @param dpId the dpId
+     * @param priority the priority of the flow
+     * @param flowId the flowId
+     * @param conntrackState the conntrack state of the packets thats should be
+     *        send
+     * @param conntrackMask the conntrack mask
+     * @param dispatcherTableId the dispatcher table id
+     * @param tableId the table id
+     * @param addOrRemove whether to add or remove the flow
+     */
+    private void programConntrackForwardRule(BigInteger dpId, Integer priority, String flowId,
+            int conntrackState, int conntrackMask, short dispatcherTableId, short tableId, int addOrRemove) {
+        List<MatchInfoBase> matches = new ArrayList<>();
+        matches.add(new NxMatchInfo(NxMatchFieldType.ct_state, new long[] {conntrackState, conntrackMask}));
+
+        List<InstructionInfo> instructions = getDispatcherTableResubmitInstructions(
+            new ArrayList<>(),dispatcherTableId);
+
+        flowId = "Fixed_Conntrk_Trk_" + dpId + "_" + flowId + dispatcherTableId;
+        syncFlow(dpId, tableId, flowId, priority, "ACL", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
+    }
+
+    /**
+     * Adds the rule to drop the unknown/invalid packets .
+     *
+     * @param dpId the dpId
+     * @param priority the priority of the flow
+     * @param flowId the flowId
+     * @param conntrackState the conntrack state of the packets thats should be
+     *        send
+     * @param conntrackMask the conntrack mask
+     * @param tableId the table id
+     * @param addOrRemove whether to add or remove the flow
+     */
+    private void programConntrackDropRule(BigInteger dpId, Integer priority, String flowId,
+            int conntrackState, int conntrackMask, short tableId, int addOrRemove) {
+        List<MatchInfoBase> matches = new ArrayList<>();
+        matches.add(new NxMatchInfo(NxMatchFieldType.ct_state, new long[] {conntrackState, conntrackMask}));
+
+        List<InstructionInfo> instructions = new ArrayList<>();
+        List<ActionInfo> actionsInfos = new ArrayList<>();
+        actionsInfos.add(new ActionDrop());
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+        flowId = "Fixed_Conntrk_NewDrop_" + dpId + "_" + flowId + tableId;
+        syncFlow(dpId, tableId, flowId, priority, "ACL", 0, 0,
+                AclConstants.COOKIE_ACL_BASE, matches, instructions, addOrRemove);
+    }
+
+    /**
+     * Gets the dispatcher table resubmit instructions.
+     *
+     * @param actionsInfos the actions infos
+     * @param dispatcherTableId the dispatcher table id
+     * @return the instructions for dispatcher table resubmit
+     */
+    private List<InstructionInfo> getDispatcherTableResubmitInstructions(List<ActionInfo> actionsInfos,
+                                                                         short dispatcherTableId) {
+        List<InstructionInfo> instructions = new ArrayList<>();
+        actionsInfos.add(new ActionNxResubmit(dispatcherTableId));
+        instructions.add(new InstructionInfo(InstructionType.apply_actions, actionsInfos));
+        return instructions;
+    }
+
+    /**
+     * Writes/remove the flow to/from the datastore.
+     * @param dpId the dpId
+     * @param tableId the tableId
+     * @param flowId the flowId
+     * @param priority the priority
+     * @param flowName the flow name
+     * @param idleTimeOut the idle timeout
+     * @param hardTimeOut the hard timeout
+     * @param cookie the cookie
+     * @param matches the list of matches to be written
+     * @param instructions the list of instruction to be written.
+     * @param addOrRemove add or remove the entries.
+     */
+    protected void syncFlow(BigInteger dpId, short tableId, String flowId, int priority, String flowName,
+                          int idleTimeOut, int hardTimeOut, BigInteger cookie, List<? extends MatchInfoBase>  matches,
+                          List<InstructionInfo> instructions, int addOrRemove) {
+        if (addOrRemove == NwConstants.DEL_FLOW) {
+            FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, tableId,flowId,
+                priority, flowName , idleTimeOut, hardTimeOut, cookie, matches, null);
+            LOG.trace("Removing Acl Flow DpnId {}, flowId {}", dpId, flowId);
+            mdsalManager.removeFlow(flowEntity);
+        } else {
+            FlowEntity flowEntity = MDSALUtil.buildFlowEntity(dpId, tableId, flowId,
+                priority, flowName, idleTimeOut, hardTimeOut, cookie, matches, instructions);
+            LOG.trace("Installing DpnId {}, flowId {}", dpId, flowId);
+            mdsalManager.installFlow(flowEntity);
+        }
+    }
+
     /**
      * Gets the table miss flow id.
      *
@@ -181,13 +580,6 @@ public class AclNodeListener extends AsyncDataTreeChangeListenerBase<FlowCapable
         return String.valueOf(tableId);
     }
 
-    /*
-     * (non-Javadoc)
-     *
-     * @see
-     * org.opendaylight.genius.datastoreutils.AsyncDataTreeChangeListenerBase#
-     * getDataTreeChangeListener()
-     */
     @Override
     protected AclNodeListener getDataTreeChangeListener() {
         return AclNodeListener.this;