A Discrete-Event Network Simulator
API
vht-operation.cc
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1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2016 S├ębastien Deronne
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: S├ębastien Deronne <sebastien.deronne@gmail.com>
19  */
20 
21 #include "vht-operation.h"
22 
23 namespace ns3 {
24 
26  : m_channelWidth (0),
27  m_channelCenterFrequencySegment0 (0),
28  m_channelCenterFrequencySegment1 (0),
29  m_basicVhtMcsAndNssSet (0),
30  m_vhtSupported (0)
31 {
32 }
33 
36 {
37  return IE_VHT_OPERATION;
38 }
39 
40 void
41 VhtOperation::SetVhtSupported (uint8_t vhtSupported)
42 {
43  m_vhtSupported = vhtSupported;
44 }
45 
46 uint8_t
48 {
49  //we should not be here if VHT is not supported
51  return 5;
52 }
53 
54 void
55 VhtOperation::SetChannelWidth (uint8_t channelWidth)
56 {
57  m_channelWidth = channelWidth;
58 }
59 
60 void
61 VhtOperation::SetChannelCenterFrequencySegment0 (uint8_t channelCenterFrequencySegment0)
62 {
63  m_channelCenterFrequencySegment0 = channelCenterFrequencySegment0;
64 }
65 
66 void
67 VhtOperation::SetChannelCenterFrequencySegment1 (uint8_t channelCenterFrequencySegment1)
68 {
69  m_channelCenterFrequencySegment1 = channelCenterFrequencySegment1;
70 }
71 
72 void
73 VhtOperation::SetMaxVhtMcsPerNss (uint8_t nss, uint8_t maxVhtMcs)
74 {
75  NS_ASSERT ((maxVhtMcs == 0 || (maxVhtMcs >= 7 && maxVhtMcs <= 9)) && (nss >= 1 && nss <= 8));
76  if (maxVhtMcs != 0)
77  {
78  m_basicVhtMcsAndNssSet |= (((maxVhtMcs - 7) & 0x03) << ((nss - 1) * 2));
79  }
80  else
81  {
82  m_basicVhtMcsAndNssSet |= (3 << ((nss - 1) * 2));
83  }
84 }
85 
86 void
87 VhtOperation::SetBasicVhtMcsAndNssSet (uint16_t basicVhtMcsAndNssSet)
88 {
89  m_basicVhtMcsAndNssSet = basicVhtMcsAndNssSet;
90 }
91 
92 uint8_t
94 {
95  return m_channelWidth;
96 }
97 
98 uint8_t
100 {
102 }
103 
104 uint8_t
106 {
108 }
109 
110 uint16_t
112 {
113  return m_basicVhtMcsAndNssSet;
114 }
115 
118 {
119  if (m_vhtSupported < 1)
120  {
121  return i;
122  }
124 }
125 
126 uint16_t
128 {
129  if (m_vhtSupported < 1)
130  {
131  return 0;
132  }
134 }
135 
136 void
138 {
139  if (m_vhtSupported == 1)
140  {
141  //write the corresponding value for each bit
142  start.WriteU8 (GetChannelWidth ());
145  start.WriteU16 (GetBasicVhtMcsAndNssSet ());
146  }
147 }
148 
149 uint8_t
151 {
153  uint8_t channelWidth = i.ReadU8 ();
154  uint8_t channelCenterFrequencySegment0 = i.ReadU8 ();
155  uint8_t channelCenterFrequencySegment1 = i.ReadU8 ();
156  uint16_t basicVhtMcsAndNssSet = i.ReadU16 ();
157  SetChannelWidth (channelWidth);
158  SetChannelCenterFrequencySegment0 (channelCenterFrequencySegment0);
159  SetChannelCenterFrequencySegment1 (channelCenterFrequencySegment1);
160  SetBasicVhtMcsAndNssSet (basicVhtMcsAndNssSet);
161  return length;
162 }
163 
164 std::ostream &
165 operator << (std::ostream &os, const VhtOperation &VhtOperation)
166 {
167  os << +VhtOperation.GetChannelWidth () << "|"
171  return os;
172 }
173 
174 } //namespace ns3
uint16_t ReadU16(void)
Definition: buffer.h:1029
uint16_t GetBasicVhtMcsAndNssSet(void) const
Return the Basic VHT-MCS And Nss field in the VHT Operation information element.
Buffer::Iterator Serialize(Buffer::Iterator i) const
Serialize entire IE including Element ID and length fields.
void SetMaxVhtMcsPerNss(uint8_t nss, uint8_t maxVhtMcs)
Set the Basic VHT-MCS and NSS field in the VHT Operation information element by specifying the tuple ...
def start()
Definition: core.py:1855
The VHT Operation Information ElementThis class knows how to serialise and deserialise the VHT Operat...
Definition: vht-operation.h:37
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
Definition: assert.h:67
uint8_t m_channelWidth
channel width
WifiInformationElementId ElementId() const
iterator in a Buffer instance
Definition: buffer.h:98
uint8_t GetInformationFieldSize() const
Length of serialized information (i.e., the length of the body of the IE, not including the Element I...
uint8_t m_channelCenterFrequencySegment0
channel center frequency segment 0
uint8_t m_vhtSupported
This is used to decide whether this element should be added to the frame or not.
void SetVhtSupported(uint8_t vhtSupported)
Set the VHT supported information element.
void SetChannelCenterFrequencySegment1(uint8_t channelCenterFrequencySegment1)
Set the Channel Center Frequency Segment 1 field in the VHT Operation information element...
std::ostream & operator<<(std::ostream &os, const Angles &a)
print a struct Angles to output
Definition: angles.cc:42
uint8_t GetChannelCenterFrequencySegment0(void) const
Return the Channel Center Frequency Segment 0 field in the VHT Operation information element...
Every class exported by the ns3 library is enclosed in the ns3 namespace.
uint8_t GetChannelWidth(void) const
Return the Channel Width field in the VHT Operation information element.
uint16_t GetSerializedSize() const
Get the size of the serialized IE including Element ID and length fields.
void SetChannelCenterFrequencySegment0(uint8_t channelCenterFrequencySegment0)
Set the Channel Center Frequency Segment 0 field in the VHT Operation information element...
uint16_t m_basicVhtMcsAndNssSet
basic VHT MCS NSS set
#define IE_VHT_OPERATION
void SerializeInformationField(Buffer::Iterator start) const
Serialize information (i.e., the body of the IE, not including the Element ID and length octets) ...
uint8_t DeserializeInformationField(Buffer::Iterator start, uint8_t length)
Deserialize information (i.e., the body of the IE, not including the Element ID and length octets) ...
void SetBasicVhtMcsAndNssSet(uint16_t basicVhtMcsAndNssSet)
Set the Basic VHT-MCS and NSS field in the VHT Operation information element.
uint16_t GetSerializedSize() const
uint8_t ReadU8(void)
Definition: buffer.h:1021
Buffer::Iterator Serialize(Buffer::Iterator start) const
uint8_t WifiInformationElementId
This type is used to represent an Information Element ID.
uint8_t m_channelCenterFrequencySegment1
channel center frequency segment 1
void SetChannelWidth(uint8_t channelWidth)
Set the Channel Width field in the VHT Operation information element.
uint8_t GetChannelCenterFrequencySegment1(void) const
Return the Channel Center Frequency Segment 1 field in the VHT Operation information element...