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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 android.net.MacAddress;
import com.android.net.module.util.Struct;
import com.android.net.module.util.Struct.Field;
import com.android.net.module.util.Struct.Type;
/**
* L2 ethernet header as per IEEE 802.3. Does not include a 802.1Q tag.
*
* 0 1
* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Destination |
* +- -+
* | Ethernet |
* +- -+
* | Address |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Source |
* +- -+
* | Ethernet |
* +- -+
* | Address |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | EtherType |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
public class EthernetHeader extends Struct {
@Field(order = 0, type = Type.EUI48)
public final MacAddress dstMac;
@Field(order = 1, type = Type.EUI48)
public final MacAddress srcMac;
@Field(order = 2, type = Type.U16)
public final int etherType;
public EthernetHeader(final MacAddress dstMac, final MacAddress srcMac,
final int etherType) {
this.dstMac = dstMac;
this.srcMac = srcMac;
this.etherType = etherType;
}
}
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