仿真平台内核初版 -tlib库 包含<sparc arm riscv powerPC>

lib/Packet.Net/PacketDotNet/LinuxSLLFields.cs

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