A Discrete-Event Network Simulator
API
ampdu-subframe-header.cc
Go to the documentation of this file.
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 <iomanip>
23 
24 namespace ns3 {
25 
26 NS_OBJECT_ENSURE_REGISTERED (AmpduSubframeHeader);
27 
28 TypeId
30 {
31  static TypeId tid = TypeId ("ns3::AmpduSubframeHeader")
32  .SetParent<Header> ()
33  .SetGroupName ("Wifi")
34  .AddConstructor<AmpduSubframeHeader> ()
35  ;
36  return tid;
37 }
38 
39 TypeId
41 {
42  return GetTypeId ();
43 }
44 
46  : m_length (0),
47  m_eof (0),
48  m_signature (0x4E) // Per 802.11 standard, the unique pattern is set to the value 0x4E.
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 (1); //not used, CRC always set to 1
67  i.WriteU8 (m_signature);
68 }
69 
70 uint32_t
72 {
74  uint16_t field = i.ReadLsbtohU16 ();
75  m_eof = (field & 0x8000) >> 15;
76  m_length = (field & 0x3fff);
77  i.ReadU8 (); //CRC
78  m_signature = i.ReadU8 (); //SIG
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  << ", signature = 0x" << std::hex << m_signature;
87 }
88 
89 void
91 {
92  m_length = length;
93 }
94 
95 void
97 {
98  m_eof = eof;
99 }
100 
101 uint16_t
103 {
104  return m_length;
105 }
106 
107 bool
109 {
110  return m_eof;
111 }
112 
113 bool
115 {
116  return m_signature == 0x4E;
117 }
118 
119 } //namespace ns3
Protocol header serialization and deserialization.
Definition: header.h:42
void Print(std::ostream &os) const
uint32_t Deserialize(Buffer::Iterator start)
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
def start()
Definition: core.py:1855
TypeId GetInstanceTypeId(void) const
Get the most derived TypeId for this Object.
iterator in a Buffer instance
Definition: buffer.h:98
uint32_t GetDistanceFrom(Iterator const &o) const
Definition: buffer.cc:783
bool GetEof(void) const
Return the EOF field.
Introspection did not find any typical Config paths.
void SetEof(bool eof)
Set the EOF field.
uint8_t m_signature
delimiter signature (should correspond to pattern 0x4E in order to be assumed valid) ...
void Serialize(Buffer::Iterator start) const
void SetLength(uint16_t length)
Set the length field.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
uint32_t GetSerializedSize(void) const
void WriteHtolsbU16(uint16_t data)
Definition: buffer.cc:910
void WriteU8(uint8_t data)
Definition: buffer.h:869
uint16_t GetLength(void) const
Return the length field.
uint16_t m_length
length field
uint8_t ReadU8(void)
Definition: buffer.h:1021
uint16_t ReadLsbtohU16(void)
Definition: buffer.cc:1065
bool IsSignatureValid(void) const
Return whether the pattern stored in the delimiter signature field is correct, i.e.
a unique identifier for an interface.
Definition: type-id.h:58
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:915
static TypeId GetTypeId(void)
Get the type ID.