diff --git a/utils/misc/src/main/java/org/onlab/packet/TCP.java b/utils/misc/src/main/java/org/onlab/packet/TCP.java
new file mode 100644
index 0000000..95a8d8f
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/packet/TCP.java
@@ -0,0 +1,337 @@
+/*******************************************************************************
+ * Copyright 2014 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.
+ ******************************************************************************/
+/**
+ * Copyright 2011, Big Switch Networks, Inc.
+ * Originally created by David Erickson, Stanford University
+ *
+ * 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.onlab.packet;
+
+import java.nio.ByteBuffer;
+
+/**
+ *
+ * @author shudong.zhou@bigswitch.com
+ */
+
+public class TCP extends BasePacket {
+    protected short sourcePort;
+    protected short destinationPort;
+    protected int sequence;
+    protected int acknowledge;
+    protected byte dataOffset;
+    protected short flags;
+    protected short windowSize;
+    protected short checksum;
+    protected short urgentPointer;
+    protected byte[] options;
+
+    /**
+     * @return the sourcePort
+     */
+    public short getSourcePort() {
+        return this.sourcePort;
+    }
+
+    /**
+     * @param sourcePort
+     *            the sourcePort to set
+     */
+    public TCP setSourcePort(final short sourcePort) {
+        this.sourcePort = sourcePort;
+        return this;
+    }
+
+    /**
+     * @return the destinationPort
+     */
+    public short getDestinationPort() {
+        return this.destinationPort;
+    }
+
+    /**
+     * @param destinationPort
+     *            the destinationPort to set
+     */
+    public TCP setDestinationPort(final short destinationPort) {
+        this.destinationPort = destinationPort;
+        return this;
+    }
+
+    /**
+     * @return the checksum
+     */
+    public short getChecksum() {
+        return this.checksum;
+    }
+
+    public int getSequence() {
+        return this.sequence;
+    }
+
+    public TCP setSequence(final int seq) {
+        this.sequence = seq;
+        return this;
+    }
+
+    public int getAcknowledge() {
+        return this.acknowledge;
+    }
+
+    public TCP setAcknowledge(final int ack) {
+        this.acknowledge = ack;
+        return this;
+    }
+
+    public byte getDataOffset() {
+        return this.dataOffset;
+    }
+
+    public TCP setDataOffset(final byte offset) {
+        this.dataOffset = offset;
+        return this;
+    }
+
+    public short getFlags() {
+        return this.flags;
+    }
+
+    public TCP setFlags(final short flags) {
+        this.flags = flags;
+        return this;
+    }
+
+    public short getWindowSize() {
+        return this.windowSize;
+    }
+
+    public TCP setWindowSize(final short windowSize) {
+        this.windowSize = windowSize;
+        return this;
+    }
+
+    public short getTcpChecksum() {
+        return this.checksum;
+    }
+
+    public TCP setTcpChecksum(final short checksum) {
+        this.checksum = checksum;
+        return this;
+    }
+
+    @Override
+    public void resetChecksum() {
+        this.checksum = 0;
+        super.resetChecksum();
+    }
+
+    public short getUrgentPointer(final short urgentPointer) {
+        return this.urgentPointer;
+    }
+
+    public TCP setUrgentPointer(final short urgentPointer) {
+        this.urgentPointer = urgentPointer;
+        return this;
+    }
+
+    public byte[] getOptions() {
+        return this.options;
+    }
+
+    public TCP setOptions(final byte[] options) {
+        this.options = options;
+        this.dataOffset = (byte) (20 + options.length + 3 >> 2);
+        return this;
+    }
+
+    /**
+     * @param checksum
+     *            the checksum to set
+     */
+    public TCP setChecksum(final short checksum) {
+        this.checksum = checksum;
+        return this;
+    }
+
+    /**
+     * Serializes the packet. Will compute and set the following fields if they
+     * are set to specific values at the time serialize is called: -checksum : 0
+     * -length : 0
+     */
+    @Override
+    public byte[] serialize() {
+        int length;
+        if (this.dataOffset == 0) {
+            this.dataOffset = 5; // default header length
+        }
+        length = this.dataOffset << 2;
+        byte[] payloadData = null;
+        if (this.payload != null) {
+            this.payload.setParent(this);
+            payloadData = this.payload.serialize();
+            length += payloadData.length;
+        }
+
+        final byte[] data = new byte[length];
+        final ByteBuffer bb = ByteBuffer.wrap(data);
+
+        bb.putShort(this.sourcePort);
+        bb.putShort(this.destinationPort);
+        bb.putInt(this.sequence);
+        bb.putInt(this.acknowledge);
+        bb.putShort((short) (this.flags | this.dataOffset << 12));
+        bb.putShort(this.windowSize);
+        bb.putShort(this.checksum);
+        bb.putShort(this.urgentPointer);
+        if (this.dataOffset > 5) {
+            int padding;
+            bb.put(this.options);
+            padding = (this.dataOffset << 2) - 20 - this.options.length;
+            for (int i = 0; i < padding; i++) {
+                bb.put((byte) 0);
+            }
+        }
+        if (payloadData != null) {
+            bb.put(payloadData);
+        }
+
+        if (this.parent != null && this.parent instanceof IPv4) {
+            ((IPv4) this.parent).setProtocol(IPv4.PROTOCOL_TCP);
+        }
+
+        // compute checksum if needed
+        if (this.checksum == 0) {
+            bb.rewind();
+            int accumulation = 0;
+
+            // compute pseudo header mac
+            if (this.parent != null && this.parent instanceof IPv4) {
+                final IPv4 ipv4 = (IPv4) this.parent;
+                accumulation += (ipv4.getSourceAddress() >> 16 & 0xffff)
+                        + (ipv4.getSourceAddress() & 0xffff);
+                accumulation += (ipv4.getDestinationAddress() >> 16 & 0xffff)
+                        + (ipv4.getDestinationAddress() & 0xffff);
+                accumulation += ipv4.getProtocol() & 0xff;
+                accumulation += length & 0xffff;
+            }
+
+            for (int i = 0; i < length / 2; ++i) {
+                accumulation += 0xffff & bb.getShort();
+            }
+            // pad to an even number of shorts
+            if (length % 2 > 0) {
+                accumulation += (bb.get() & 0xff) << 8;
+            }
+
+            accumulation = (accumulation >> 16 & 0xffff)
+                    + (accumulation & 0xffff);
+            this.checksum = (short) (~accumulation & 0xffff);
+            bb.putShort(16, this.checksum);
+        }
+        return data;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see java.lang.Object#hashCode()
+     */
+    @Override
+    public int hashCode() {
+        final int prime = 5807;
+        int result = super.hashCode();
+        result = prime * result + this.checksum;
+        result = prime * result + this.destinationPort;
+        result = prime * result + this.sourcePort;
+        return result;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see java.lang.Object#equals(java.lang.Object)
+     */
+    @Override
+    public boolean equals(final Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!super.equals(obj)) {
+            return false;
+        }
+        if (!(obj instanceof TCP)) {
+            return false;
+        }
+        final TCP other = (TCP) obj;
+        // May want to compare fields based on the flags set
+        return this.checksum == other.checksum
+                && this.destinationPort == other.destinationPort
+                && this.sourcePort == other.sourcePort
+                && this.sequence == other.sequence
+                && this.acknowledge == other.acknowledge
+                && this.dataOffset == other.dataOffset
+                && this.flags == other.flags
+                && this.windowSize == other.windowSize
+                && this.urgentPointer == other.urgentPointer
+                && (this.dataOffset == 5 || this.options.equals(other.options));
+    }
+
+    @Override
+    public IPacket deserialize(final byte[] data, final int offset,
+            final int length) {
+        final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
+        this.sourcePort = bb.getShort();
+        this.destinationPort = bb.getShort();
+        this.sequence = bb.getInt();
+        this.acknowledge = bb.getInt();
+        this.flags = bb.getShort();
+        this.dataOffset = (byte) (this.flags >> 12 & 0xf);
+        this.flags = (short) (this.flags & 0x1ff);
+        this.windowSize = bb.getShort();
+        this.checksum = bb.getShort();
+        this.urgentPointer = bb.getShort();
+        if (this.dataOffset > 5) {
+            int optLength = (this.dataOffset << 2) - 20;
+            if (bb.limit() < bb.position() + optLength) {
+                optLength = bb.limit() - bb.position();
+            }
+            try {
+                this.options = new byte[optLength];
+                bb.get(this.options, 0, optLength);
+            } catch (final IndexOutOfBoundsException e) {
+                this.options = null;
+            }
+        }
+
+        this.payload = new Data();
+        this.payload = this.payload.deserialize(data, bb.position(), bb.limit()
+                - bb.position());
+        this.payload.setParent(this);
+        return this;
+    }
+}