adding packet types
diff --git a/utils/misc/src/main/java/org/onlab/packet/ARP.java b/utils/misc/src/main/java/org/onlab/packet/ARP.java
new file mode 100644
index 0000000..df31142
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/packet/ARP.java
@@ -0,0 +1,365 @@
+/*******************************************************************************
+ * 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;
+import java.util.Arrays;
+
+/**
+ *
+ * @author David Erickson (daviderickson@cs.stanford.edu)
+ */
+public class ARP extends BasePacket {
+ public static final short HW_TYPE_ETHERNET = 0x1;
+
+ public static final short PROTO_TYPE_IP = 0x800;
+
+ public static final short OP_REQUEST = 0x1;
+ public static final short OP_REPLY = 0x2;
+ public static final short OP_RARP_REQUEST = 0x3;
+ public static final short OP_RARP_REPLY = 0x4;
+
+ protected short hardwareType;
+ protected short protocolType;
+ protected byte hardwareAddressLength;
+ protected byte protocolAddressLength;
+ protected short opCode;
+ protected byte[] senderHardwareAddress;
+ protected byte[] senderProtocolAddress;
+ protected byte[] targetHardwareAddress;
+ protected byte[] targetProtocolAddress;
+
+ /**
+ * @return the hardwareType
+ */
+ public short getHardwareType() {
+ return this.hardwareType;
+ }
+
+ /**
+ * @param hardwareType
+ * the hardwareType to set
+ */
+ public ARP setHardwareType(final short hwType) {
+ this.hardwareType = hwType;
+ return this;
+ }
+
+ /**
+ * @return the protocolType
+ */
+ public short getProtocolType() {
+ return this.protocolType;
+ }
+
+ /**
+ * @param protocolType
+ * the protocolType to set
+ */
+ public ARP setProtocolType(final short protoType) {
+ this.protocolType = protoType;
+ return this;
+ }
+
+ /**
+ * @return the hardwareAddressLength
+ */
+ public byte getHardwareAddressLength() {
+ return this.hardwareAddressLength;
+ }
+
+ /**
+ * @param hwAddressLength
+ * the hardwareAddressLength to set
+ */
+ public ARP setHardwareAddressLength(final byte hwAddressLength) {
+ this.hardwareAddressLength = hwAddressLength;
+ return this;
+ }
+
+ /**
+ * @return the protocolAddressLength
+ */
+ public byte getProtocolAddressLength() {
+ return this.protocolAddressLength;
+ }
+
+ /**
+ * @param protocolAddressLength
+ * the protocolAddressLength to set
+ */
+ public ARP setProtocolAddressLength(final byte protoAddressLength) {
+ this.protocolAddressLength = protoAddressLength;
+ return this;
+ }
+
+ /**
+ * @return the opCode
+ */
+ public short getOpCode() {
+ return this.opCode;
+ }
+
+ /**
+ * @param opCode
+ * the opCode to set
+ */
+ public ARP setOpCode(final short op) {
+ this.opCode = op;
+ return this;
+ }
+
+ /**
+ * @return the senderHardwareAddress
+ */
+ public byte[] getSenderHardwareAddress() {
+ return this.senderHardwareAddress;
+ }
+
+ /**
+ * @param senderHardwareAddress
+ * the senderHardwareAddress to set
+ */
+ public ARP setSenderHardwareAddress(final byte[] senderHWAddress) {
+ this.senderHardwareAddress = senderHWAddress;
+ return this;
+ }
+
+ /**
+ * @return the senderProtocolAddress
+ */
+ public byte[] getSenderProtocolAddress() {
+ return this.senderProtocolAddress;
+ }
+
+ /**
+ * @param senderProtocolAddress
+ * the senderProtocolAddress to set
+ */
+ public ARP setSenderProtocolAddress(final byte[] senderProtoAddress) {
+ this.senderProtocolAddress = senderProtoAddress;
+ return this;
+ }
+
+ public ARP setSenderProtocolAddress(final int address) {
+ this.senderProtocolAddress = ByteBuffer.allocate(4).putInt(address)
+ .array();
+ return this;
+ }
+
+ /**
+ * @return the targetHardwareAddress
+ */
+ public byte[] getTargetHardwareAddress() {
+ return this.targetHardwareAddress;
+ }
+
+ /**
+ * @param targetHardwareAddress
+ * the targetHardwareAddress to set
+ */
+ public ARP setTargetHardwareAddress(final byte[] targetHWAddress) {
+ this.targetHardwareAddress = targetHWAddress;
+ return this;
+ }
+
+ /**
+ * @return the targetProtocolAddress
+ */
+ public byte[] getTargetProtocolAddress() {
+ return this.targetProtocolAddress;
+ }
+
+ /**
+ * @return True if gratuitous ARP (SPA = TPA), false otherwise
+ */
+ public boolean isGratuitous() {
+ assert this.senderProtocolAddress.length == this.targetProtocolAddress.length;
+
+ int indx = 0;
+ while (indx < this.senderProtocolAddress.length) {
+ if (this.senderProtocolAddress[indx] != this.targetProtocolAddress[indx]) {
+ return false;
+ }
+ indx++;
+ }
+
+ return true;
+ }
+
+ /**
+ * @param targetProtocolAddress
+ * the targetProtocolAddress to set
+ */
+ public ARP setTargetProtocolAddress(final byte[] targetProtoAddress) {
+ this.targetProtocolAddress = targetProtoAddress;
+ return this;
+ }
+
+ public ARP setTargetProtocolAddress(final int address) {
+ this.targetProtocolAddress = ByteBuffer.allocate(4).putInt(address)
+ .array();
+ return this;
+ }
+
+ @Override
+ public byte[] serialize() {
+ final int length = 8 + 2 * (0xff & this.hardwareAddressLength) + 2
+ * (0xff & this.protocolAddressLength);
+ final byte[] data = new byte[length];
+ final ByteBuffer bb = ByteBuffer.wrap(data);
+ bb.putShort(this.hardwareType);
+ bb.putShort(this.protocolType);
+ bb.put(this.hardwareAddressLength);
+ bb.put(this.protocolAddressLength);
+ bb.putShort(this.opCode);
+ bb.put(this.senderHardwareAddress, 0, 0xff & this.hardwareAddressLength);
+ bb.put(this.senderProtocolAddress, 0, 0xff & this.protocolAddressLength);
+ bb.put(this.targetHardwareAddress, 0, 0xff & this.hardwareAddressLength);
+ bb.put(this.targetProtocolAddress, 0, 0xff & this.protocolAddressLength);
+ return data;
+ }
+
+ @Override
+ public IPacket deserialize(final byte[] data, final int offset,
+ final int length) {
+ final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
+ this.hardwareType = bb.getShort();
+ this.protocolType = bb.getShort();
+ this.hardwareAddressLength = bb.get();
+ this.protocolAddressLength = bb.get();
+ this.opCode = bb.getShort();
+ this.senderHardwareAddress = new byte[0xff & this.hardwareAddressLength];
+ bb.get(this.senderHardwareAddress, 0, this.senderHardwareAddress.length);
+ this.senderProtocolAddress = new byte[0xff & this.protocolAddressLength];
+ bb.get(this.senderProtocolAddress, 0, this.senderProtocolAddress.length);
+ this.targetHardwareAddress = new byte[0xff & this.hardwareAddressLength];
+ bb.get(this.targetHardwareAddress, 0, this.targetHardwareAddress.length);
+ this.targetProtocolAddress = new byte[0xff & this.protocolAddressLength];
+ bb.get(this.targetProtocolAddress, 0, this.targetProtocolAddress.length);
+ return this;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see java.lang.Object#hashCode()
+ */
+ @Override
+ public int hashCode() {
+ final int prime = 13121;
+ int result = super.hashCode();
+ result = prime * result + this.hardwareAddressLength;
+ result = prime * result + this.hardwareType;
+ result = prime * result + this.opCode;
+ result = prime * result + this.protocolAddressLength;
+ result = prime * result + this.protocolType;
+ result = prime * result + Arrays.hashCode(this.senderHardwareAddress);
+ result = prime * result + Arrays.hashCode(this.senderProtocolAddress);
+ result = prime * result + Arrays.hashCode(this.targetHardwareAddress);
+ result = prime * result + Arrays.hashCode(this.targetProtocolAddress);
+ 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 ARP)) {
+ return false;
+ }
+ final ARP other = (ARP) obj;
+ if (this.hardwareAddressLength != other.hardwareAddressLength) {
+ return false;
+ }
+ if (this.hardwareType != other.hardwareType) {
+ return false;
+ }
+ if (this.opCode != other.opCode) {
+ return false;
+ }
+ if (this.protocolAddressLength != other.protocolAddressLength) {
+ return false;
+ }
+ if (this.protocolType != other.protocolType) {
+ return false;
+ }
+ if (!Arrays.equals(this.senderHardwareAddress,
+ other.senderHardwareAddress)) {
+ return false;
+ }
+ if (!Arrays.equals(this.senderProtocolAddress,
+ other.senderProtocolAddress)) {
+ return false;
+ }
+ if (!Arrays.equals(this.targetHardwareAddress,
+ other.targetHardwareAddress)) {
+ return false;
+ }
+ if (!Arrays.equals(this.targetProtocolAddress,
+ other.targetProtocolAddress)) {
+ return false;
+ }
+ return true;
+ }
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see java.lang.Object#toString()
+ */
+ @Override
+ public String toString() {
+ return "ARP [hardwareType=" + this.hardwareType + ", protocolType="
+ + this.protocolType + ", hardwareAddressLength="
+ + this.hardwareAddressLength + ", protocolAddressLength="
+ + this.protocolAddressLength + ", opCode=" + this.opCode
+ + ", senderHardwareAddress="
+ + Arrays.toString(this.senderHardwareAddress)
+ + ", senderProtocolAddress="
+ + Arrays.toString(this.senderProtocolAddress)
+ + ", targetHardwareAddress="
+ + Arrays.toString(this.targetHardwareAddress)
+ + ", targetProtocolAddress="
+ + Arrays.toString(this.targetProtocolAddress) + "]";
+ }
+}