Revert "Implements ICMPEcho packet type."

This reverts commit c90af240ebf85b2954d414afceafddca5b7d5ef6.

Change-Id: Idfd9e9aa2af8550b8bdd22305704fd368597459e
diff --git a/utils/misc/src/main/java/org/onlab/packet/ICMP.java b/utils/misc/src/main/java/org/onlab/packet/ICMP.java
index 7a5364f..68fddcb 100644
--- a/utils/misc/src/main/java/org/onlab/packet/ICMP.java
+++ b/utils/misc/src/main/java/org/onlab/packet/ICMP.java
@@ -32,14 +32,8 @@
 
     public static final byte TYPE_ECHO_REQUEST = 0x08;
     public static final byte TYPE_ECHO_REPLY = 0x00;
-
-    //Uses CODE_ECHO_REPLY instead.
-    @Deprecated
     public static final byte SUBTYPE_ECHO_REPLY = 0x00;
 
-    public static final byte CODE_ECHO_REPLY = 0x00;
-    public static final byte CODE_ECHO_REQEUST = 0x00;
-
     public static final short ICMP_HEADER_LENGTH = 4;
 
     /**
@@ -200,20 +194,10 @@
             icmp.icmpCode = bb.get();
             icmp.checksum = bb.getShort();
 
-            switch (icmp.icmpType) {
-                case ICMP.TYPE_ECHO_REQUEST:
-                case ICMP.TYPE_ECHO_REPLY:
-                    Deserializer<ICMPEcho> deserializer = ICMPEcho.deserializer();
-                    icmp.payload = deserializer.deserialize(data, bb.position(), ICMPEcho.ICMP_ECHO_HEADER_LENGTH);
-                    break;
-                default:
-                    icmp.payload = Data.deserializer()
-                            .deserialize(data, bb.position(), bb.limit()
-                                    - bb.position());
-            }
-
+            icmp.payload = Data.deserializer()
+                    .deserialize(data, bb.position(), bb.limit()
+                            - bb.position());
             icmp.payload.setParent(icmp);
-
             return icmp;
         };
     }
diff --git a/utils/misc/src/main/java/org/onlab/packet/ICMPEcho.java b/utils/misc/src/main/java/org/onlab/packet/ICMPEcho.java
deleted file mode 100644
index aa06cc6..0000000
--- a/utils/misc/src/main/java/org/onlab/packet/ICMPEcho.java
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * Copyright 2018-present Open Networking Foundation
- *
- * 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 static org.onlab.packet.PacketUtils.checkInput;
-import static com.google.common.base.MoreObjects.toStringHelper;
-import static com.google.common.base.Preconditions.checkNotNull;
-
-/**
- * ICMP packet class for echo purpose.
- */
-public class ICMPEcho extends BasePacket {
-    private short identifier;
-    private short sequenceNum;
-
-    public static final short ICMP_ECHO_HEADER_LENGTH = 4;
-
-    /**
-     * Sets the identifier.
-     *
-     * @param identifier identifier
-     * @return this
-     */
-    public ICMPEcho setIdentifier(final short identifier) {
-        this.identifier = identifier;
-        return this;
-    }
-
-    /**
-     * Gets the identifier.
-     *
-     * @return identifier
-     */
-    public short getIdentifier() {
-        return this.identifier;
-    }
-
-    /**
-     * Sets the sequencer number.
-     *
-     * @param sequenceNum sequence number
-     * @return this
-     */
-    public ICMPEcho setSequenceNum(final short sequenceNum) {
-        this.sequenceNum = sequenceNum;
-        return this;
-    }
-
-    /**
-     * Gets the sequence number.
-     *
-     * @return sequence number
-     */
-    public short getSequenceNum() {
-        return this.sequenceNum;
-    }
-
-    /**
-     * 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() {
-        checkNotNull(this.identifier);
-        checkNotNull(this.sequenceNum);
-
-        int length = ICMP_ECHO_HEADER_LENGTH;
-        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.identifier);
-        bb.putShort(this.sequenceNum);
-        if (payloadData != null) {
-            bb.put(payloadData);
-        }
-        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.identifier;
-        result = prime * result + this.sequenceNum;
-        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 ICMPEcho)) {
-            return false;
-        }
-        final ICMPEcho other = (ICMPEcho) obj;
-
-        if (this.identifier != other.identifier) {
-            return false;
-        }
-        if (this.sequenceNum != other.sequenceNum) {
-            return false;
-        }
-        return true;
-    }
-
-    /**
-     * Deserializer function for ICMPEcho packets.
-     *
-     * @return deserializer function
-     */
-    public static Deserializer<ICMPEcho> deserializer() {
-        return (data, offset, length) -> {
-            checkInput(data, offset, length, ICMP_ECHO_HEADER_LENGTH);
-
-            ICMPEcho icmp = new ICMPEcho();
-
-            final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
-
-            icmp.identifier = bb.getShort();
-            icmp.sequenceNum = bb.getShort();
-
-            return icmp;
-        };
-    }
-
-    @Override
-    public String toString() {
-        return toStringHelper(getClass())
-                .add("ICMP echo identifier", Short.toString(identifier))
-                .add("ICMP echo sequenceNumber", Short.toString(sequenceNum))
-                .toString();
-    }
-}
\ No newline at end of file
diff --git a/utils/misc/src/test/java/org/onlab/packet/ICMPEchoTest.java b/utils/misc/src/test/java/org/onlab/packet/ICMPEchoTest.java
deleted file mode 100644
index b85f4c5..0000000
--- a/utils/misc/src/test/java/org/onlab/packet/ICMPEchoTest.java
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright 2018-present Open Networking Foundation
- *
- * 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 org.junit.Before;
-import org.junit.Test;
-
-import java.nio.ByteBuffer;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertTrue;
-import static org.onlab.packet.Ethernet.TYPE_IPV4;
-
-/**
- * Unit tests for the ICMPEcho class.
- */
-public class ICMPEchoTest {
-    private Deserializer<ICMPEcho> deserializer;
-
-    protected byte icmpType = ICMP.TYPE_ECHO_REQUEST;
-    protected byte icmpCode = ICMP.CODE_ECHO_REQEUST;
-    protected short checksum = 870;
-    private short identifier = 1;
-    private short sequenceNum = 2;
-    private MacAddress srcMac = MacAddress.valueOf("11:22:33:44:55:66");
-    private IpAddress srcIp = IpAddress.valueOf("10.0.0.3");
-    private MacAddress dstMac = MacAddress.valueOf("66:55:44:33:22:11");
-    private IpAddress dstIp = IpAddress.valueOf("10.0.0.1");
-
-    private byte[] headerBytes;
-
-    /**
-     * Initial setup for this unit test.
-     */
-    @Before
-    public void setUp() throws Exception {
-        deserializer = ICMPEcho.deserializer();
-
-        ByteBuffer bb = ByteBuffer.allocate(ICMPEcho.ICMP_ECHO_HEADER_LENGTH);
-
-        bb.putShort(identifier);
-        bb.putShort(sequenceNum);
-
-        headerBytes = bb.array();
-    }
-
-
-    /**
-     * Tests the deserializeBadInput.
-     *
-     * @throws Exception exception
-     */
-    @Test
-    public void testDeserializeBadInput() throws Exception {
-        PacketTestUtils.testDeserializeBadInput(deserializer);
-    }
-
-    /**
-     * Tests the deserialzeTruncates.
-     *
-     * @throws Exception exception
-     */
-    @Test
-    public void testDeserializeTruncated() throws Exception {
-        PacketTestUtils.testDeserializeTruncated(deserializer, headerBytes);
-    }
-
-    /**
-     * Tests deserialize, serialize, getters and setters.
-     *
-     * @throws Exception exception
-     */
-    @Test
-    public void testIcmpEchoPacket() throws Exception {
-        ICMPEcho icmpEcho = new ICMPEcho();
-
-        icmpEcho.setIdentifier(identifier);
-        icmpEcho.setSequenceNum(sequenceNum);
-
-        ByteBuffer bb = ByteBuffer.wrap(icmpEcho.serialize());
-
-        ICMPEcho deserializedIcmpEcho = deserializer.deserialize(bb.array(), 0, bb.array().length);
-
-        assertTrue(deserializedIcmpEcho.equals(icmpEcho));
-
-        assertEquals(deserializedIcmpEcho.getIdentifier(), icmpEcho.getIdentifier());
-        assertEquals(deserializedIcmpEcho.getSequenceNum(), icmpEcho.getSequenceNum());
-    }
-
-    @Test
-    public void testDeserializeFromIpPacket() throws Exception {
-        ICMPEcho icmpEcho = new ICMPEcho();
-        icmpEcho.setIdentifier(identifier)
-                .setSequenceNum(sequenceNum);
-        ByteBuffer byteBufferIcmpEcho = ByteBuffer.wrap(icmpEcho.serialize());
-
-        ICMP icmp = new ICMP();
-        icmp.setIcmpType(icmpType)
-                .setIcmpCode(icmpCode)
-                .setChecksum(checksum);
-
-        icmp.setPayload(ICMPEcho.deserializer().deserialize(byteBufferIcmpEcho.array(),
-                0, ICMPEcho.ICMP_ECHO_HEADER_LENGTH));
-        ByteBuffer byteBufferIcmp = ByteBuffer.wrap(icmp.serialize());
-
-
-        IPv4 iPacket = new IPv4();
-        iPacket.setDestinationAddress(dstIp.toString());
-        iPacket.setSourceAddress(srcIp.toString());
-        iPacket.setTtl((byte) 64);
-        iPacket.setChecksum((short) 0);
-        iPacket.setDiffServ((byte) 0);
-        iPacket.setProtocol(IPv4.PROTOCOL_ICMP);
-
-        iPacket.setPayload(ICMP.deserializer().deserialize(byteBufferIcmp.array(),
-                0,
-                byteBufferIcmp.array().length));
-
-        Ethernet ethPacket = new Ethernet();
-
-        ethPacket.setEtherType(TYPE_IPV4);
-        ethPacket.setSourceMACAddress(srcMac);
-        ethPacket.setDestinationMACAddress(dstMac);
-        ethPacket.setPayload(iPacket);
-
-        validatePacket(ethPacket);
-    }
-
-    private void validatePacket(Ethernet ethPacket) {
-        ICMP icmp = (ICMP) ethPacket.getPayload().getPayload();
-        ICMPEcho icmpEcho = (ICMPEcho) icmp.getPayload();
-
-        assertEquals(icmp.getIcmpType(), icmpType);
-        assertEquals(icmp.getIcmpCode(), icmpCode);
-        assertEquals(icmp.getChecksum(), checksum);
-        assertEquals(icmpEcho.getIdentifier(), identifier);
-        assertEquals(icmpEcho.getSequenceNum(), sequenceNum);
-    }
-
-}
diff --git a/utils/misc/src/test/java/org/onlab/packet/ICMPTest.java b/utils/misc/src/test/java/org/onlab/packet/ICMPTest.java
index 24e9b19..4d215b4 100644
--- a/utils/misc/src/test/java/org/onlab/packet/ICMPTest.java
+++ b/utils/misc/src/test/java/org/onlab/packet/ICMPTest.java
@@ -40,21 +40,13 @@
 
     @Before
     public void setUp() throws Exception {
-        ICMPEcho icmpEcho = new ICMPEcho();
-        icmpEcho.setIdentifier((short) 0)
-                .setSequenceNum((short) 0);
-
-        ByteBuffer byteBufferIcmpEcho = ByteBuffer.wrap(icmpEcho.serialize());
-
         deserializer = ICMP.deserializer();
 
-        ByteBuffer bb = ByteBuffer.allocate(ICMP.ICMP_HEADER_LENGTH + ICMPEcho.ICMP_ECHO_HEADER_LENGTH);
+        ByteBuffer bb = ByteBuffer.allocate(ICMP.ICMP_HEADER_LENGTH);
 
         bb.put(icmpType);
         bb.put(icmpCode);
         bb.putShort(checksum);
-        bb.put(byteBufferIcmpEcho);
-
 
         headerBytes = bb.array();
     }