95 lines
3.2 KiB
C#
95 lines
3.2 KiB
C#
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/*
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This file is part of PacketDotNet
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PacketDotNet is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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PacketDotNet is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PacketDotNet. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Copyright 2009 Chris Morgan <chmorgan@gmail.com>
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*/
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using System;
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namespace PacketDotNet
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{
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/// <summary>
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/// Lengths and offsets to the fields in the LinuxSLL packet
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/// See http://github.com/mcr/libpcap/blob/master/pcap/sll.h
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/// </summary>
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public class LinuxSLLFields
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{
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/// <summary>
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/// Length of the packet type field
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/// </summary>
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public readonly static int PacketTypeLength = 2;
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/// <summary>
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/// Link layer address type
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/// </summary>
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public readonly static int LinkLayerAddressTypeLength = 2;
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/// <summary>
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/// Link layer address length
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/// </summary>
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public readonly static int LinkLayerAddressLengthLength = 2;
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/// <summary>
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/// The link layer address field length
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/// NOTE: the actual link layer address MAY be shorter than this
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/// </summary>
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public readonly static int LinkLayerAddressMaximumLength = 8;
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/// <summary>
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/// Number of bytes in a SLL header
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/// </summary>
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public readonly static int SLLHeaderLength = 16;
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/// <summary>
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/// Length of the ethernet protocol field
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/// </summary>
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public readonly static int EthernetProtocolTypeLength = 2;
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/// <summary>
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/// Position of the packet type field
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/// </summary>
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public readonly static int PacketTypePosition = 0;
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/// <summary>
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/// Position of the link layer address type field
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/// </summary>
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public readonly static int LinkLayerAddressTypePosition;
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/// <summary>
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/// Positino of the link layer address length field
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/// </summary>
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public readonly static int LinkLayerAddressLengthPosition;
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/// <summary>
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/// Position of the link layer address field
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/// </summary>
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public readonly static int LinkLayerAddressPosition;
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/// <summary>
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/// Position of the ethernet protocol type field
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/// </summary>
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public readonly static int EthernetProtocolTypePosition;
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static LinuxSLLFields()
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{
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LinkLayerAddressTypePosition = PacketTypePosition + PacketTypeLength;
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LinkLayerAddressLengthPosition = LinkLayerAddressTypePosition + LinkLayerAddressTypeLength;
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LinkLayerAddressPosition = LinkLayerAddressLengthPosition + LinkLayerAddressLengthLength;
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EthernetProtocolTypePosition = LinkLayerAddressPosition + LinkLayerAddressMaximumLength;
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}
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}
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}
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