A Discrete-Event Network Simulator
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mac-tx-middle.cc
Go to the documentation of this file.
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/*
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* Copyright (c) 2005, 2009 INRIA
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* Copyright (c) 2009 MIRKO BANCHI
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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* Mirko Banchi <mk.banchi@gmail.com>
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* Ghada Badawy <gbadawy@gmail.com>
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*/
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#include "
mac-tx-middle.h
"
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#include "
wifi-mac-header.h
"
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#include "ns3/log.h"
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namespace
ns3
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{
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NS_LOG_COMPONENT_DEFINE
(
"MacTxMiddle"
);
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MacTxMiddle::MacTxMiddle
()
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: m_sequence(0)
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{
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NS_LOG_FUNCTION
(
this
);
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}
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MacTxMiddle::~MacTxMiddle
()
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{
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NS_LOG_FUNCTION
(
this
);
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for
(
auto
i =
m_qosSequences
.begin(); i !=
m_qosSequences
.end(); i++)
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{
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delete
[] i->second;
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}
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}
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uint16_t
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MacTxMiddle::GetNextSequenceNumberFor
(
const
WifiMacHeader
* hdr)
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{
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NS_LOG_FUNCTION
(
this
);
42
uint16_t retval;
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if
(hdr->
IsQosData
() && !hdr->
GetAddr1
().
IsGroup
())
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{
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uint8_t tid = hdr->
GetQosTid
();
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NS_ASSERT
(tid < 16);
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auto
it =
m_qosSequences
.find(hdr->
GetAddr1
());
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if
(it !=
m_qosSequences
.end())
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{
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retval = it->second[tid];
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it->second[tid]++;
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it->second[tid] %= 4096;
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}
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else
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{
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retval = 0;
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std::pair<Mac48Address, uint16_t*> newSeq(hdr->
GetAddr1
(),
new
uint16_t[16]);
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auto
newIns =
m_qosSequences
.insert(newSeq);
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NS_ASSERT
(newIns.second ==
true
);
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for
(uint8_t i = 0; i < 16; i++)
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{
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newIns.first->second[i] = 0;
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}
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newIns.first->second[tid]++;
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}
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}
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else
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{
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retval =
m_sequence
;
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m_sequence
++;
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m_sequence
%= 4096;
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}
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return
retval;
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}
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uint16_t
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MacTxMiddle::PeekNextSequenceNumberFor
(
const
WifiMacHeader
* hdr)
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{
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NS_LOG_FUNCTION
(
this
);
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uint16_t retval;
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if
(hdr->
IsQosData
() && !hdr->
GetAddr1
().
IsGroup
())
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{
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uint8_t tid = hdr->
GetQosTid
();
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NS_ASSERT
(tid < 16);
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auto
it =
m_qosSequences
.find(hdr->
GetAddr1
());
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if
(it !=
m_qosSequences
.end())
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{
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retval = it->second[tid];
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}
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else
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{
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retval = 0;
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}
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}
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else
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{
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retval =
m_sequence
;
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}
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return
retval;
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}
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uint16_t
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MacTxMiddle::GetNextSeqNumberByTidAndAddress
(uint8_t tid,
Mac48Address
addr)
const
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{
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NS_LOG_FUNCTION
(
this
);
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NS_ASSERT
(tid < 16);
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uint16_t seq = 0;
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auto
it =
m_qosSequences
.find(addr);
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if
(it !=
m_qosSequences
.end())
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{
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return
it->second[tid];
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}
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return
seq;
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}
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void
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MacTxMiddle::SetSequenceNumberFor
(
const
WifiMacHeader
* hdr)
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{
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NS_LOG_FUNCTION
(
this
<< *hdr);
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if
(hdr->
IsQosData
() && !hdr->
GetAddr1
().
IsGroup
())
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{
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uint8_t tid = hdr->
GetQosTid
();
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NS_ASSERT
(tid < 16);
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auto
it =
m_qosSequences
.find(hdr->
GetAddr1
());
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NS_ASSERT
(it !=
m_qosSequences
.end());
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it->second[tid] = hdr->
GetSequenceNumber
();
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}
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else
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{
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m_sequence
= hdr->
GetSequenceNumber
();
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}
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}
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}
// namespace ns3
ns3::Mac48Address
an EUI-48 address
Definition
mac48-address.h:35
ns3::Mac48Address::IsGroup
bool IsGroup() const
Definition
mac48-address.cc:137
ns3::MacTxMiddle::~MacTxMiddle
~MacTxMiddle()
Definition
mac-tx-middle.cc:29
ns3::MacTxMiddle::SetSequenceNumberFor
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...
Definition
mac-tx-middle.cc:117
ns3::MacTxMiddle::m_qosSequences
std::map< Mac48Address, uint16_t * > m_qosSequences
QOS sequences.
Definition
mac-tx-middle.h:68
ns3::MacTxMiddle::m_sequence
uint16_t m_sequence
current sequence number
Definition
mac-tx-middle.h:69
ns3::MacTxMiddle::GetNextSeqNumberByTidAndAddress
uint16_t GetNextSeqNumberByTidAndAddress(uint8_t tid, Mac48Address addr) const
Return the next sequence number for the Traffic ID and destination.
Definition
mac-tx-middle.cc:103
ns3::MacTxMiddle::GetNextSequenceNumberFor
uint16_t GetNextSequenceNumberFor(const WifiMacHeader *hdr)
Return the next sequence number for the given header.
Definition
mac-tx-middle.cc:39
ns3::MacTxMiddle::PeekNextSequenceNumberFor
uint16_t PeekNextSequenceNumberFor(const WifiMacHeader *hdr)
Return the next sequence number for the Traffic ID and destination, but do not pick it (i....
Definition
mac-tx-middle.cc:77
ns3::MacTxMiddle::MacTxMiddle
MacTxMiddle()
Definition
mac-tx-middle.cc:23
ns3::WifiMacHeader
Implements the IEEE 802.11 MAC header.
Definition
wifi-mac-header.h:87
ns3::WifiMacHeader::GetQosTid
uint8_t GetQosTid() const
Return the Traffic ID of a QoS header.
Definition
wifi-mac-header.cc:894
ns3::WifiMacHeader::GetAddr1
Mac48Address GetAddr1() const
Return the address in the Address 1 field.
Definition
wifi-mac-header.cc:432
ns3::WifiMacHeader::GetSequenceNumber
uint16_t GetSequenceNumber() const
Return the sequence number of the header.
Definition
wifi-mac-header.cc:797
ns3::WifiMacHeader::IsQosData
bool IsQosData() const
Return true if the Type is DATA and Subtype is one of the possible values for QoS Data.
Definition
wifi-mac-header.cc:574
NS_ASSERT
#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
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition
log.h:191
NS_LOG_FUNCTION
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by ",...
Definition
log-macros-enabled.h:229
mac-tx-middle.h
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
wifi-mac-header.h
src
wifi
model
mac-tx-middle.cc
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