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/*
* Copyright (C) 2021 The Android Open Source Project
*
* 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 com.android.net.module.util.structs;
import com.android.net.module.util.Struct;
import com.android.net.module.util.Struct.Field;
import com.android.net.module.util.Struct.Type;
import java.net.Inet6Address;
/**
* L3 IPv6 header as per https://tools.ietf.org/html/rfc8200.
*
* 0 1 2 3
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |Version| Traffic Class | Flow Label |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Payload Length | Next Header | Hop Limit |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | |
* + +
* | |
* + Source Address +
* | |
* + +
* | |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | |
* + +
* | |
* + Destination Address +
* | |
* + +
* | |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
public class Ipv6Header extends Struct {
@Field(order = 0, type = Type.S32)
public int vtf;
@Field(order = 1, type = Type.U16)
public int payloadLength;
@Field(order = 2, type = Type.S8)
public byte nextHeader;
@Field(order = 3, type = Type.U8)
public short hopLimit;
@Field(order = 4, type = Type.Ipv6Address)
public Inet6Address srcIp;
@Field(order = 5, type = Type.Ipv6Address)
public Inet6Address dstIp;
public Ipv6Header(final int vtf, final int payloadLength, final byte nextHeader,
final short hopLimit, final Inet6Address srcIp, final Inet6Address dstIp) {
this.vtf = vtf;
this.payloadLength = payloadLength;
this.nextHeader = nextHeader;
this.hopLimit = hopLimit;
this.srcIp = srcIp;
this.dstIp = dstIp;
}
}
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