105 lines
3.1 KiB
C#
105 lines
3.1 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 2012 Alan Rushforth <alan.rushforth@gmail.com>
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace PacketDotNet
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{
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namespace Ieee80211
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{
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/// <summary>
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/// The Sequence control field occurs in management and data frames and is used to
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/// relate together fragmented payloads carried in multiple 802.11 frames.
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/// </summary>
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public class SequenceControlField
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{
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/// <summary>
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/// Gets or sets the field that backs all the other properties in the class.
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/// </summary>
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/// <value>
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/// The field.
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/// </value>
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public UInt16 Field { get; set; }
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/// <summary>
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/// Gets or sets the sequence number.
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/// </summary>
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/// <value>
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/// The sequence number.
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/// </value>
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public short SequenceNumber
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{
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get
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{
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return (short)(Field >> 4);
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}
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set
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{
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//Use the & mask to make sure we only overwrite the sequence number part of the field
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Field &= 0xF;
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Field |= (UInt16)(value << 4);
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}
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}
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/// <summary>
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/// Gets or sets the fragment number.
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/// </summary>
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/// <value>
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/// The fragment number.
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/// </value>
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public byte FragmentNumber
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{
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get
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{
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return (byte)(Field & 0x000F);
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}
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set
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{
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Field &= unchecked((ushort)~0xF);
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Field |= (UInt16)(value & 0x0F);
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="PacketDotNet.Ieee80211.SequenceControlField"/> class.
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/// </summary>
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public SequenceControlField()
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{
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}
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="field">
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/// A <see cref="UInt16"/>
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/// </param>
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public SequenceControlField(UInt16 field)
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{
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this.Field = field;
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}
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}
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}
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}
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