A Discrete-Event Network Simulator
API
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mac-tx-middle.cc
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1/*
2 * Copyright (c) 2005, 2009 INRIA
3 * Copyright (c) 2009 MIRKO BANCHI
4 *
5 * SPDX-License-Identifier: GPL-2.0-only
6 *
7 * Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
8 * Mirko Banchi <mk.banchi@gmail.com>
9 * Ghada Badawy <gbadawy@gmail.com>
10 */
11
12#include "mac-tx-middle.h"
13
14#include "wifi-mac-header.h"
15
16#include "ns3/log.h"
17
18namespace ns3
19{
20
21NS_LOG_COMPONENT_DEFINE("MacTxMiddle");
22
24 : m_sequence(0)
25{
26 NS_LOG_FUNCTION(this);
27}
28
30{
31 NS_LOG_FUNCTION(this);
32 for (auto i = m_qosSequences.begin(); i != m_qosSequences.end(); i++)
33 {
34 delete[] i->second;
35 }
36}
37
38uint16_t
40{
41 NS_LOG_FUNCTION(this);
42 uint16_t retval;
43 if (hdr->IsQosData() && !hdr->GetAddr1().IsGroup())
44 {
45 uint8_t tid = hdr->GetQosTid();
46 NS_ASSERT(tid < 16);
47 auto it = m_qosSequences.find(hdr->GetAddr1());
48 if (it != m_qosSequences.end())
49 {
50 retval = it->second[tid];
51 it->second[tid]++;
52 it->second[tid] %= 4096;
53 }
54 else
55 {
56 retval = 0;
57 std::pair<Mac48Address, uint16_t*> newSeq(hdr->GetAddr1(), new uint16_t[16]);
58 auto newIns = m_qosSequences.insert(newSeq);
59 NS_ASSERT(newIns.second == true);
60 for (uint8_t i = 0; i < 16; i++)
61 {
62 newIns.first->second[i] = 0;
63 }
64 newIns.first->second[tid]++;
65 }
66 }
67 else
68 {
69 retval = m_sequence;
70 m_sequence++;
71 m_sequence %= 4096;
72 }
73 return retval;
74}
75
76uint16_t
78{
79 NS_LOG_FUNCTION(this);
80 uint16_t retval;
81 if (hdr->IsQosData() && !hdr->GetAddr1().IsGroup())
82 {
83 uint8_t tid = hdr->GetQosTid();
84 NS_ASSERT(tid < 16);
85 auto it = m_qosSequences.find(hdr->GetAddr1());
86 if (it != m_qosSequences.end())
87 {
88 retval = it->second[tid];
89 }
90 else
91 {
92 retval = 0;
93 }
94 }
95 else
96 {
97 retval = m_sequence;
98 }
99 return retval;
100}
101
102uint16_t
104{
105 NS_LOG_FUNCTION(this);
106 NS_ASSERT(tid < 16);
107 uint16_t seq = 0;
108 auto it = m_qosSequences.find(addr);
109 if (it != m_qosSequences.end())
110 {
111 return it->second[tid];
112 }
113 return seq;
114}
115
116void
118{
119 NS_LOG_FUNCTION(this << *hdr);
120
121 if (hdr->IsQosData() && !hdr->GetAddr1().IsGroup())
122 {
123 uint8_t tid = hdr->GetQosTid();
124 NS_ASSERT(tid < 16);
125 auto it = m_qosSequences.find(hdr->GetAddr1());
126 NS_ASSERT(it != m_qosSequences.end());
127 it->second[tid] = hdr->GetSequenceNumber();
128 }
129 else
130 {
132 }
133}
134
135} // namespace ns3
an EUI-48 address
bool IsGroup() const
void SetSequenceNumberFor(const WifiMacHeader *hdr)
Set the sequence number of the given MAC header as the next sequence number for the Traffic ID and de...
std::map< Mac48Address, uint16_t * > m_qosSequences
QOS sequences.
uint16_t m_sequence
current sequence number
uint16_t GetNextSeqNumberByTidAndAddress(uint8_t tid, Mac48Address addr) const
Return the next sequence number for the Traffic ID and destination.
uint16_t GetNextSequenceNumberFor(const WifiMacHeader *hdr)
Return the next sequence number for the given header.
uint16_t PeekNextSequenceNumberFor(const WifiMacHeader *hdr)
Return the next sequence number for the Traffic ID and destination, but do not pick it (i....
Implements the IEEE 802.11 MAC header.
uint8_t GetQosTid() const
Return the Traffic ID of a QoS header.
Mac48Address GetAddr1() const
Return the address in the Address 1 field.
uint16_t GetSequenceNumber() const
Return the sequence number of the header.
bool IsQosData() const
Return true if the Type is DATA and Subtype is one of the possible values for QoS Data.
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition assert.h:55
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition log.h:191
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
Every class exported by the ns3 library is enclosed in the ns3 namespace.