A Discrete-Event Network Simulator
API
ns3::PieQueueDisc Class Reference

Implements PIE Active Queue Management discipline. More...

#include "pie-queue-disc.h"

+ Inheritance diagram for ns3::PieQueueDisc:
+ Collaboration diagram for ns3::PieQueueDisc:

Public Types

enum  BurstStateT { NO_BURST, IN_BURST, IN_BURST_PROTECTING }
 Burst types. More...
 
- Public Types inherited from ns3::QueueDisc
typedef Queue< QueueDiscItemInternalQueue
 Internal queues store QueueDiscItem objects. More...
 
typedef std::function< void(Ptr< QueueDiscItem >)> SendCallback
 Callback invoked to send a packet to the receiving object when Run is called. More...
 
enum  WakeMode { WAKE_ROOT = 0x00, WAKE_CHILD = 0x01 }
 Used to determine whether the queue disc itself or its children must be activated when a netdevice wakes a transmission queue. More...
 

Public Member Functions

 PieQueueDisc ()
 PieQueueDisc Constructor. More...
 
virtual ~PieQueueDisc ()
 PieQueueDisc Destructor. More...
 
int64_t AssignStreams (int64_t stream)
 Assign a fixed random variable stream number to the random variables used by this model. More...
 
Time GetQueueDelay (void)
 Get queue delay. More...
 
- Public Member Functions inherited from ns3::QueueDisc
 QueueDisc (QueueDiscSizePolicy policy=QueueDiscSizePolicy::SINGLE_INTERNAL_QUEUE)
 Constructor. More...
 
 QueueDisc (QueueDiscSizePolicy policy, QueueSizeUnit unit)
 Constructor. More...
 
virtual ~QueueDisc ()
 
void AddInternalQueue (Ptr< InternalQueue > queue)
 Add an internal queue to the tail of the list of queues. More...
 
void AddPacketFilter (Ptr< PacketFilter > filter)
 Add a packet filter to the tail of the list of filters used to classify packets. More...
 
void AddQueueDiscClass (Ptr< QueueDiscClass > qdClass)
 Add a queue disc class to the tail of the list of classes. More...
 
int32_t Classify (Ptr< QueueDiscItem > item)
 Classify a packet by calling the packet filters, one at a time, until either a filter able to classify the packet is found or all the filters have been processed. More...
 
Ptr< QueueDiscItemDequeue (void)
 Extract from the queue disc the packet that has been dequeued by calling Peek, if any, or call the private DoDequeue method (which must be implemented by derived classes) to dequeue a packet, otherwise. More...
 
bool Enqueue (Ptr< QueueDiscItem > item)
 Pass a packet to store to the queue discipline. More...
 
QueueSize GetCurrentSize (void)
 Get the current size of the queue disc in bytes, if operating in bytes mode, or packets, otherwise. More...
 
Ptr< InternalQueueGetInternalQueue (std::size_t i) const
 Get the i-th internal queue. More...
 
QueueSize GetMaxSize (void) const
 Get the maximum size of the queue disc. More...
 
uint32_t GetNBytes (void) const
 Get the amount of bytes stored by the queue disc. More...
 
Ptr< NetDeviceQueueInterfaceGetNetDeviceQueueInterface (void) const
 
std::size_t GetNInternalQueues (void) const
 Get the number of internal queues. More...
 
std::size_t GetNPacketFilters (void) const
 Get the number of packet filters. More...
 
uint32_t GetNPackets (void) const
 Get the number of packets stored by the queue disc. More...
 
std::size_t GetNQueueDiscClasses (void) const
 Get the number of queue disc classes. More...
 
Ptr< PacketFilterGetPacketFilter (std::size_t i) const
 Get the i-th packet filter. More...
 
Ptr< QueueDiscClassGetQueueDiscClass (std::size_t i) const
 Get the i-th queue disc class. More...
 
virtual uint32_t GetQuota (void) const
 Get the maximum number of dequeue operations following a packet enqueue. More...
 
SendCallback GetSendCallback (void) const
 
const StatsGetStats (void)
 Retrieve all the collected statistics. More...
 
virtual WakeMode GetWakeMode (void) const
 When setting up the wake callbacks on the netdevice queues, it is necessary to determine which queue disc (the root queue disc or one of its children) should be activated when the netdevice wakes one of its transmission queues. More...
 
Ptr< const QueueDiscItemPeek (void)
 Get a copy of the next packet the queue discipline will extract. More...
 
void Run (void)
 Modelled after the Linux function __qdisc_run (net/sched/sch_generic.c) Dequeues multiple packets, until a quota is exceeded or sending a packet to the device failed. More...
 
bool SetMaxSize (QueueSize size)
 Set the maximum size of the queue disc. More...
 
void SetNetDeviceQueueInterface (Ptr< NetDeviceQueueInterface > ndqi)
 
virtual void SetQuota (const uint32_t quota)
 Set the maximum number of dequeue operations following a packet enqueue. More...
 
void SetSendCallback (SendCallback func)
 
- Public Member Functions inherited from ns3::Object
 Object ()
 Constructor. More...
 
virtual ~Object ()
 Destructor. More...
 
void AggregateObject (Ptr< Object > other)
 Aggregate two Objects together. More...
 
void Dispose (void)
 Dispose of this Object. More...
 
AggregateIterator GetAggregateIterator (void) const
 Get an iterator to the Objects aggregated to this one. More...
 
virtual TypeId GetInstanceTypeId (void) const
 Get the most derived TypeId for this Object. More...
 
template<typename T >
Ptr< T > GetObject (void) const
 Get a pointer to the requested aggregated Object. More...
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 Get a pointer to the requested aggregated Object by TypeId. More...
 
void Initialize (void)
 Invoke DoInitialize on all Objects aggregated to this one. More...
 
bool IsInitialized (void) const
 Check if the object has been initialized. More...
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Default constructor. More...
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor. More...
 
uint32_t GetReferenceCount (void) const
 Get the reference count of the object. More...
 
SimpleRefCountoperator= (const SimpleRefCount &o)
 Assignment operator. More...
 
void Ref (void) const
 Increment the reference count. More...
 
void Unref (void) const
 Decrement the reference count. More...
 
- Public Member Functions inherited from ns3::ObjectBase
virtual ~ObjectBase ()
 Virtual destructor. More...
 
void GetAttribute (std::string name, AttributeValue &value) const
 Get the value of an attribute, raising fatal errors if unsuccessful. More...
 
bool GetAttributeFailSafe (std::string name, AttributeValue &value) const
 Get the value of an attribute without raising erros. More...
 
void SetAttribute (std::string name, const AttributeValue &value)
 Set a single attribute, raising fatal errors if unsuccessful. More...
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 Set a single attribute without raising errors. More...
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 Connect a TraceSource to a Callback with a context. More...
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 Connect a TraceSource to a Callback without a context. More...
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected with a context. More...
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected without a context. More...
 

Static Public Member Functions

static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::QueueDisc
static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Object
static TypeId GetTypeId (void)
 Register this type. More...
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId (void)
 Get the type ID. More...
 

Static Public Attributes

static constexpr const char * FORCED_DROP = "Forced drop"
 Drops due to queue limit: reactive. More...
 
static constexpr const char * UNFORCED_DROP = "Unforced drop"
 Early probability drops: proactive. More...
 
- Static Public Attributes inherited from ns3::QueueDisc
static constexpr const char * CHILD_QUEUE_DISC_DROP = "(Dropped by child queue disc) "
 Packet dropped by a child queue disc. More...
 
static constexpr const char * CHILD_QUEUE_DISC_MARK = "(Marked by child queue disc) "
 Packet marked by a child queue disc. More...
 
static constexpr const char * INTERNAL_QUEUE_DROP = "Dropped by internal queue"
 Packet dropped by an internal queue. More...
 

Protected Member Functions

virtual void DoDispose (void)
 Dispose of the object. More...
 
- Protected Member Functions inherited from ns3::QueueDisc
void DoInitialize (void)
 Check whether the configuration is correct and initialize parameters. More...
 
void DropAfterDequeue (Ptr< const QueueDiscItem > item, const char *reason)
 Perform the actions required when the queue disc is notified of a packet dropped after dequeue. More...
 
void DropBeforeEnqueue (Ptr< const QueueDiscItem > item, const char *reason)
 Perform the actions required when the queue disc is notified of a packet dropped before enqueue. More...
 
bool Mark (Ptr< QueueDiscItem > item, const char *reason)
 Marks the given packet and, if successful, updates the counters associated with the given reason. More...
 
- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 Copy an Object. More...
 
virtual void NotifyNewAggregate (void)
 Notify all Objects aggregated to this one of a new Object being aggregated. More...
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 Complete construction of ObjectBase; invoked by derived classes. More...
 
virtual void NotifyConstructionCompleted (void)
 Notifier called once the ObjectBase is fully constructed. More...
 

Private Member Functions

void CalculateP ()
 Periodically update the drop probability based on the delay samples: not only the current delay sample but also the trend where the delay is going, up or down. More...
 
virtual bool CheckConfig (void)
 Check whether the current configuration is correct. More...
 
virtual Ptr< QueueDiscItemDoDequeue (void)
 This function actually extracts a packet from the queue disc. More...
 
virtual bool DoEnqueue (Ptr< QueueDiscItem > item)
 This function actually enqueues a packet into the queue disc. More...
 
bool DropEarly (Ptr< QueueDiscItem > item, uint32_t qSize)
 Check if a packet needs to be dropped due to probability drop. More...
 
virtual void InitializeParams (void)
 Initialize the queue parameters. More...
 

Private Attributes

double m_a
 Parameter to pie controller. More...
 
double m_avgDqRate
 Time averaged dequeue rate. More...
 
double m_b
 Parameter to pie controller. More...
 
Time m_burstAllowance
 Current max burst value in seconds that is allowed before random drops kick in. More...
 
uint32_t m_burstReset
 Used to reset value of burst allowance. More...
 
BurstStateT m_burstState
 Used to determine the current state of burst. More...
 
uint64_t m_dqCount
 Number of bytes departed since current measurement cycle starts. More...
 
double m_dqStart
 Start timestamp of current measurement cycle. More...
 
uint32_t m_dqThreshold
 Minimum queue size in bytes before dequeue rate is measured. More...
 
double m_dropProb
 Variable used in calculation of drop probability. More...
 
bool m_inMeasurement
 Indicates whether we are in a measurement cycle. More...
 
Time m_maxBurst
 Maximum burst allowed before random early dropping kicks in. More...
 
uint32_t m_meanPktSize
 Average packet size in bytes. More...
 
Time m_qDelay
 Current value of queue delay. More...
 
Time m_qDelayOld
 Old value of queue delay. More...
 
Time m_qDelayRef
 Desired queue delay. More...
 
EventId m_rtrsEvent
 Event used to decide the decision of interval of drop probability calculation. More...
 
Time m_sUpdate
 Start time of the update timer. More...
 
Time m_tUpdate
 Time period after which CalculateP () is called. More...
 
Ptr< UniformRandomVariablem_uv
 Rng stream. More...
 

Static Private Attributes

static const uint64_t DQCOUNT_INVALID = std::numeric_limits<uint64_t>::max()
 Invalid dqCount value. More...
 

Additional Inherited Members

Detailed Description

Implements PIE Active Queue Management discipline.


Introspection did not find any typical Config paths.


Attributes

  • MeanPktSize: Average of packet size
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 1000
    • Flags: construct write read
  • A: Value of alpha
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 0.125
    • Flags: construct write read
  • B: Value of beta
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 1.25
    • Flags: construct write read
  • Tupdate: Time period to calculate drop probability
    • Set with class: ns3::TimeValue
    • Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
    • Initial value: +29999999.0ns
    • Flags: construct write read
  • Supdate: Start time of the update timer
    • Set with class: ns3::TimeValue
    • Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
    • Initial value: +0.0ns
    • Flags: construct write read
  • MaxSize: The maximum number of packets accepted by this queue disc
  • DequeueThreshold: Minimum queue size in bytes before dequeue rate is measured
    • Set with class: ns3::UintegerValue
    • Underlying type: uint32_t 0:4294967295
    • Initial value: 10000
    • Flags: construct write read
  • QueueDelayReference: Desired queue delay
    • Set with class: ns3::TimeValue
    • Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
    • Initial value: +20000000.0ns
    • Flags: construct write read
  • MaxBurstAllowance: Current max burst allowance in seconds before random drop
    • Set with class: ns3::TimeValue
    • Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
    • Initial value: +100000000.0ns
    • Flags: construct write read

Attributes defined in parent class ns3::QueueDisc

No TraceSources are defined for this type.

TraceSources defined in parent class ns3::QueueDisc

Size of this type is 1136 bytes (on a 64-bit architecture).

Definition at line 51 of file pie-queue-disc.h.

Member Enumeration Documentation

◆ BurstStateT

Burst types.

Enumerator
NO_BURST 
IN_BURST 
IN_BURST_PROTECTING 

Definition at line 73 of file pie-queue-disc.h.

Constructor & Destructor Documentation

◆ PieQueueDisc()

ns3::PieQueueDisc::PieQueueDisc ( )

PieQueueDisc Constructor.

Definition at line 100 of file pie-queue-disc.cc.

References CalculateP(), m_rtrsEvent, m_sUpdate, m_uv, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().

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◆ ~PieQueueDisc()

ns3::PieQueueDisc::~PieQueueDisc ( )
virtual

PieQueueDisc Destructor.

Definition at line 108 of file pie-queue-disc.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ AssignStreams()

int64_t ns3::PieQueueDisc::AssignStreams ( int64_t  stream)

Assign a fixed random variable stream number to the random variables used by this model.

Return the number of streams (possibly zero) that have been assigned.

Parameters
streamfirst stream index to use
Returns
the number of stream indices assigned by this model

Definition at line 130 of file pie-queue-disc.cc.

References m_uv, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().

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◆ CalculateP()

void ns3::PieQueueDisc::CalculateP ( )
private

Periodically update the drop probability based on the delay samples: not only the current delay sample but also the trend where the delay is going, up or down.

Definition at line 233 of file pie-queue-disc.cc.

References BURST_RESET_TIMEOUT, DQCOUNT_INVALID, ns3::QueueDisc::GetInternalQueue(), ns3::QueueDisc::GetNBytes(), ns3::Time::GetSeconds(), IN_BURST, IN_BURST_PROTECTING, m_a, m_avgDqRate, m_b, m_burstAllowance, m_burstReset, m_burstState, m_dqCount, m_dropProb, m_qDelay, m_qDelayOld, m_qDelayRef, m_rtrsEvent, m_tUpdate, NO_BURST, NS_LOG_FUNCTION, ns3::Simulator::Schedule(), and ns3::Seconds().

Referenced by PieQueueDisc().

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◆ CheckConfig()

bool ns3::PieQueueDisc::CheckConfig ( void  )
privatevirtual

Check whether the current configuration is correct.

Default objects (such as internal queues) might be created by this method to ensure the configuration is correct. This method is automatically called at simulation initialization time, and it is called before the InitializeParams () method. It is appropriate to promote parameter initialization to this method if it aids in checking for correct configuration.

See also
QueueDisc::InitializeParams
Returns
true if the configuration is correct, false otherwise

Implements ns3::QueueDisc.

Definition at line 409 of file pie-queue-disc.cc.

References ns3::QueueDisc::AddInternalQueue(), ns3::CreateObjectWithAttributes(), ns3::QueueDisc::GetMaxSize(), ns3::QueueDisc::GetNInternalQueues(), ns3::QueueDisc::GetNPacketFilters(), ns3::QueueDisc::GetNQueueDiscClasses(), NS_LOG_ERROR, and NS_LOG_FUNCTION.

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◆ DoDequeue()

Ptr< QueueDiscItem > ns3::PieQueueDisc::DoDequeue ( void  )
privatevirtual

This function actually extracts a packet from the queue disc.

Returns
0 if the operation was not successful; the item otherwise.

Implements ns3::QueueDisc.

Definition at line 344 of file pie-queue-disc.cc.

References ns3::QueueDisc::GetInternalQueue(), ns3::QueueDisc::GetNBytes(), ns3::Time::GetSeconds(), m_avgDqRate, m_dqCount, m_dqStart, m_dqThreshold, m_inMeasurement, ns3::Simulator::Now(), NS_LOG_FUNCTION, and NS_LOG_LOGIC().

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◆ DoDispose()

void ns3::PieQueueDisc::DoDispose ( void  )
protectedvirtual

Dispose of the object.

Reimplemented from ns3::QueueDisc.

Definition at line 114 of file pie-queue-disc.cc.

References ns3::QueueDisc::DoDispose(), m_rtrsEvent, m_uv, NS_LOG_FUNCTION, and ns3::Simulator::Remove().

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◆ DoEnqueue()

bool ns3::PieQueueDisc::DoEnqueue ( Ptr< QueueDiscItem item)
privatevirtual

This function actually enqueues a packet into the queue disc.

Parameters
itemitem to enqueue
Returns
True if the operation was successful; false otherwise

Implements ns3::QueueDisc.

Definition at line 138 of file pie-queue-disc.cc.

References ns3::QueueDisc::DropBeforeEnqueue(), DropEarly(), FORCED_DROP, ns3::QueueDisc::GetCurrentSize(), ns3::QueueDisc::GetInternalQueue(), ns3::QueueDisc::GetMaxSize(), ns3::QueueDisc::GetNBytes(), ns3::QueueDisc::GetNPackets(), ns3::QueueSize::GetValue(), NS_LOG_FUNCTION, NS_LOG_LOGIC(), and UNFORCED_DROP.

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◆ DropEarly()

bool ns3::PieQueueDisc::DropEarly ( Ptr< QueueDiscItem item,
uint32_t  qSize 
)
private

Check if a packet needs to be dropped due to probability drop.

Parameters
itemqueue item
qSizequeue size
Returns
0 for no drop, 1 for drop

Definition at line 182 of file pie-queue-disc.cc.

References ns3::BYTES, ns3::QueueDisc::GetMaxSize(), ns3::Time::GetSeconds(), ns3::QueueSize::GetUnit(), ns3::UniformRandomVariable::GetValue(), IN_BURST_PROTECTING, m_burstAllowance, m_burstState, m_dropProb, m_maxBurst, m_meanPktSize, m_qDelayOld, m_qDelayRef, m_uv, NO_BURST, NS_LOG_FUNCTION, ns3::PACKETS, and packetSize.

Referenced by DoEnqueue().

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◆ GetQueueDelay()

Time ns3::PieQueueDisc::GetQueueDelay ( void  )

Get queue delay.

Returns
The current queue delay.

Definition at line 123 of file pie-queue-disc.cc.

References m_qDelay, and NS_LOG_FUNCTION.

◆ GetTypeId()

◆ InitializeParams()

void ns3::PieQueueDisc::InitializeParams ( void  )
privatevirtual

Initialize the queue parameters.

Implements ns3::QueueDisc.

Definition at line 170 of file pie-queue-disc.cc.

References DQCOUNT_INVALID, m_avgDqRate, m_burstState, m_dqCount, m_dqStart, m_dropProb, m_inMeasurement, m_qDelayOld, NO_BURST, and ns3::Seconds().

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Member Data Documentation

◆ DQCOUNT_INVALID

const uint64_t ns3::PieQueueDisc::DQCOUNT_INVALID = std::numeric_limits<uint64_t>::max()
staticprivate

Invalid dqCount value.

Definition at line 132 of file pie-queue-disc.h.

Referenced by CalculateP(), and InitializeParams().

◆ FORCED_DROP

constexpr const char* ns3::PieQueueDisc::FORCED_DROP = "Forced drop"
static

Drops due to queue limit: reactive.

Definition at line 99 of file pie-queue-disc.h.

Referenced by DoEnqueue().

◆ m_a

double ns3::PieQueueDisc::m_a
private

Parameter to pie controller.

Definition at line 140 of file pie-queue-disc.h.

Referenced by CalculateP(), and GetTypeId().

◆ m_avgDqRate

double ns3::PieQueueDisc::m_avgDqRate
private

Time averaged dequeue rate.

Definition at line 152 of file pie-queue-disc.h.

Referenced by CalculateP(), DoDequeue(), and InitializeParams().

◆ m_b

double ns3::PieQueueDisc::m_b
private

Parameter to pie controller.

Definition at line 141 of file pie-queue-disc.h.

Referenced by CalculateP(), and GetTypeId().

◆ m_burstAllowance

Time ns3::PieQueueDisc::m_burstAllowance
private

Current max burst value in seconds that is allowed before random drops kick in.

Definition at line 148 of file pie-queue-disc.h.

Referenced by CalculateP(), and DropEarly().

◆ m_burstReset

uint32_t ns3::PieQueueDisc::m_burstReset
private

Used to reset value of burst allowance.

Definition at line 149 of file pie-queue-disc.h.

Referenced by CalculateP().

◆ m_burstState

BurstStateT ns3::PieQueueDisc::m_burstState
private

Used to determine the current state of burst.

Definition at line 150 of file pie-queue-disc.h.

Referenced by CalculateP(), DropEarly(), and InitializeParams().

◆ m_dqCount

uint64_t ns3::PieQueueDisc::m_dqCount
private

Number of bytes departed since current measurement cycle starts.

Definition at line 154 of file pie-queue-disc.h.

Referenced by CalculateP(), DoDequeue(), and InitializeParams().

◆ m_dqStart

double ns3::PieQueueDisc::m_dqStart
private

Start timestamp of current measurement cycle.

Definition at line 153 of file pie-queue-disc.h.

Referenced by DoDequeue(), and InitializeParams().

◆ m_dqThreshold

uint32_t ns3::PieQueueDisc::m_dqThreshold
private

Minimum queue size in bytes before dequeue rate is measured.

Definition at line 142 of file pie-queue-disc.h.

Referenced by DoDequeue(), and GetTypeId().

◆ m_dropProb

double ns3::PieQueueDisc::m_dropProb
private

Variable used in calculation of drop probability.

Definition at line 145 of file pie-queue-disc.h.

Referenced by CalculateP(), DropEarly(), and InitializeParams().

◆ m_inMeasurement

bool ns3::PieQueueDisc::m_inMeasurement
private

Indicates whether we are in a measurement cycle.

Definition at line 151 of file pie-queue-disc.h.

Referenced by DoDequeue(), and InitializeParams().

◆ m_maxBurst

Time ns3::PieQueueDisc::m_maxBurst
private

Maximum burst allowed before random early dropping kicks in.

Definition at line 139 of file pie-queue-disc.h.

Referenced by DropEarly(), and GetTypeId().

◆ m_meanPktSize

uint32_t ns3::PieQueueDisc::m_meanPktSize
private

Average packet size in bytes.

Definition at line 138 of file pie-queue-disc.h.

Referenced by DropEarly(), and GetTypeId().

◆ m_qDelay

Time ns3::PieQueueDisc::m_qDelay
private

Current value of queue delay.

Definition at line 147 of file pie-queue-disc.h.

Referenced by CalculateP(), and GetQueueDelay().

◆ m_qDelayOld

Time ns3::PieQueueDisc::m_qDelayOld
private

Old value of queue delay.

Definition at line 146 of file pie-queue-disc.h.

Referenced by CalculateP(), DropEarly(), and InitializeParams().

◆ m_qDelayRef

Time ns3::PieQueueDisc::m_qDelayRef
private

Desired queue delay.

Definition at line 137 of file pie-queue-disc.h.

Referenced by CalculateP(), DropEarly(), and GetTypeId().

◆ m_rtrsEvent

EventId ns3::PieQueueDisc::m_rtrsEvent
private

Event used to decide the decision of interval of drop probability calculation.

Definition at line 155 of file pie-queue-disc.h.

Referenced by CalculateP(), DoDispose(), and PieQueueDisc().

◆ m_sUpdate

Time ns3::PieQueueDisc::m_sUpdate
private

Start time of the update timer.

Definition at line 135 of file pie-queue-disc.h.

Referenced by GetTypeId(), and PieQueueDisc().

◆ m_tUpdate

Time ns3::PieQueueDisc::m_tUpdate
private

Time period after which CalculateP () is called.

Definition at line 136 of file pie-queue-disc.h.

Referenced by CalculateP(), and GetTypeId().

◆ m_uv

Ptr<UniformRandomVariable> ns3::PieQueueDisc::m_uv
private

Rng stream.

Definition at line 156 of file pie-queue-disc.h.

Referenced by AssignStreams(), DoDispose(), DropEarly(), and PieQueueDisc().

◆ UNFORCED_DROP

constexpr const char* ns3::PieQueueDisc::UNFORCED_DROP = "Unforced drop"
static

Early probability drops: proactive.

Definition at line 98 of file pie-queue-disc.h.

Referenced by DoEnqueue().


The documentation for this class was generated from the following files: