| /* |
| * Copyright 2016-present 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. |
| */ |
| package org.onlab.packet; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Implements IP packet format. |
| */ |
| public abstract class IP extends BasePacket { |
| |
| /** |
| * Gets IP version number. |
| * |
| * @return IP version number |
| */ |
| public abstract byte getVersion(); |
| |
| /** |
| * Sets IP version number. |
| * |
| * @param version the version to set |
| * @return IP class |
| */ |
| public abstract IP setVersion(final byte version); |
| |
| /** |
| * Deserializer function for IP packets. |
| * |
| * @return deserializer function |
| */ |
| public static Deserializer<? extends IP> deserializer() { |
| return (data, offset, length) -> { |
| final ByteBuffer bb = ByteBuffer.wrap(data, offset, length); |
| byte version = (byte) (bb.get() >> 4 & 0xf); |
| |
| switch (version) { |
| case 4: |
| return IPv4.deserializer().deserialize(data, offset, length); |
| case 6: |
| return IPv6.deserializer().deserialize(data, offset, length); |
| default: |
| throw new DeserializationException("Invalid IP version"); |
| } |
| }; |
| } |
| } |