| /* |
| * 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; |
| } |
| } |