A Discrete-Event Network Simulator
API
ampdu-subframe-header.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2013
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: Ghada Badawy <gbadawy@gmail.com>
19  */
20 
21 #include "ampdu-subframe-header.h"
22 #include "ns3/address-utils.h"
23 #include <iomanip>
24 
25 namespace ns3 {
26 
27 NS_OBJECT_ENSURE_REGISTERED (AmpduSubframeHeader);
28 
29 TypeId
31 {
32  static TypeId tid = TypeId ("ns3::AmpduSubframeHeader")
33  .SetParent<Header> ()
34  .SetGroupName ("Wifi")
35  .AddConstructor<AmpduSubframeHeader> ()
36  ;
37  return tid;
38 }
39 
40 TypeId
42 {
43  return GetTypeId ();
44 }
45 
47  : m_length (0),
48  m_eof (0)
49 {
50 }
51 
53 {
54 }
55 
56 uint32_t
58 {
59  return (2 + 1 + 1);
60 }
61 
62 void
64 {
65  i.WriteHtolsbU16 ((m_eof << 15) | m_length);
66  i.WriteU8 (m_crc);
67  i.WriteU8 (m_sig);
68 }
69 
70 uint32_t
72 {
74  uint16_t field = i.ReadLsbtohU16 ();
75  m_eof = (field & 0x8000) >> 15;
76  m_length = (field & 0x3fff);
77  m_crc = i.ReadU8 ();
78  m_sig = i.ReadU8 ();
79  return i.GetDistanceFrom (start);
80 }
81 
82 void
83 AmpduSubframeHeader::Print (std::ostream &os) const
84 {
85  os << "EOF = " << m_eof << ", length = " << m_length;
86  char previousFillChar = os.fill ('0');
87  os << ", CRC = 0x" << std::hex << std::setw (2) << (uint16_t) m_crc << ", Signature = 0x" << (uint16_t) m_sig << std::dec;
88  os.fill (previousFillChar);
89 }
90 
91 void
93 {
94  m_crc = crc;
95 }
96 
97 void
99 {
100  // Per 802.11 standard, the unique pattern is set to the value 0x4E.
101  m_sig = 0x4E;
102 }
103 
104 void
106 {
107  m_length = length;
108 }
109 
110 void
112 {
113  m_eof = eof;
114 }
115 
116 uint8_t
118 {
119  return m_crc;
120 }
121 
122 uint8_t
124 {
125  return m_sig;
126 }
127 
128 uint16_t
130 {
131  return m_length;
132 }
133 
134 bool
136 {
137  return m_eof;
138 }
139 
140 } //namespace ns3
Protocol header serialization and deserialization.
Definition: header.h:42
uint16_t GetLength(void) const
Return the length field.
virtual uint32_t GetSerializedSize(void) const
void SetSig()
Set the SIG field.
virtual uint32_t Deserialize(Buffer::Iterator start)
uint8_t GetSig(void) const
Return the SIG field.
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:44
virtual void Print(std::ostream &os) const
def start()
Definition: core.py:1482
uint32_t GetDistanceFrom(Iterator const &o) const
Definition: buffer.cc:783
iterator in a Buffer instance
Definition: buffer.h:98
virtual TypeId GetInstanceTypeId(void) const
Get the most derived TypeId for this Object.
virtual void Serialize(Buffer::Iterator start) const
void SetCrc(uint8_t crc)
Set the CRC field.
uint8_t GetCrc(void) const
Return the CRC field.
Introspection did not find any typical Config paths.
void SetEof(bool eof)
Set the EOF field.
void SetLength(uint16_t length)
Set the length field.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
void WriteHtolsbU16(uint16_t data)
Definition: buffer.cc:910
void WriteU8(uint8_t data)
Definition: buffer.h:868
uint16_t m_length
length field
uint8_t ReadU8(void)
Definition: buffer.h:1020
uint16_t ReadLsbtohU16(void)
Definition: buffer.cc:1065
a unique identifier for an interface.
Definition: type-id.h:58
bool GetEof(void) const
Return the EOF field.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:904