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ns3::RedQueue Class Reference
Queue

A RED packet queue. More...

#include <red-queue.h>

+ Inheritance diagram for ns3::RedQueue:
+ Collaboration diagram for ns3::RedQueue:

Classes

struct  Stats
 Stats. More...
 

Public Types

enum  { DTYPE_NONE, DTYPE_FORCED, DTYPE_UNFORCED }
 Drop types. More...
 
- Public Types inherited from ns3::Queue
enum  QueueMode { QUEUE_MODE_PACKETS, QUEUE_MODE_BYTES }
 Enumeration of the modes supported in the class. More...
 

Public Member Functions

 RedQueue ()
 RedQueue Constructor. More...
 
virtual ~RedQueue ()
 Destructor. More...
 
int64_t AssignStreams (int64_t stream)
 Assign a fixed random variable stream number to the random variables used by this model. More...
 
RedQueue::QueueMode GetMode (void)
 Get the encapsulation mode of this queue. More...
 
uint32_t GetQueueSize (void)
 Get the current value of the queue in bytes or packets. More...
 
Stats GetStats ()
 Get the RED statistics after running. More...
 
void SetMode (RedQueue::QueueMode mode)
 Set the operating mode of this queue. More...
 
void SetQueueLimit (uint32_t lim)
 Set the limit of the queue. More...
 
void SetTh (double minTh, double maxTh)
 Set the thresh limits of RED. More...
 
- Public Member Functions inherited from ns3::Queue
 Queue ()
 
virtual ~Queue ()
 
Ptr< Packet > Dequeue (void)
 Remove a packet from the front of the Queue. More...
 
void DequeueAll (void)
 Flush the queue. More...
 
bool Enqueue (Ptr< Packet > p)
 Place a packet into the rear of the Queue. More...
 
uint32_t GetNBytes (void) const
 
uint32_t GetNPackets (void) const
 
uint32_t GetTotalDroppedBytes (void) const
 
uint32_t GetTotalDroppedPackets (void) const
 
uint32_t GetTotalReceivedBytes (void) const
 
uint32_t GetTotalReceivedPackets (void) const
 
bool IsEmpty (void) const
 
Ptr< const Packet > Peek (void) const
 Get a copy of the item at the front of the queue without removing it. More...
 
void ResetStatistics (void)
 Resets the counts for dropped packets, dropped bytes, received packets, and received bytes. More...
 
- Public Member Functions inherited from ns3::Object
 Object ()
 
virtual ~Object ()
 
void AggregateObject (Ptr< Object > other)
 
void Dispose (void)
 Run the DoDispose methods of this object and all the objects aggregated to it. More...
 
AggregateIterator GetAggregateIterator (void) const
 
virtual TypeId GetInstanceTypeId (void) const
 
template<typename T >
Ptr< T > GetObject (void) const
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 
void Initialize (void)
 This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Constructor. More...
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor. More...
 
uint32_t GetReferenceCount (void) const
 Get the reference count of the object. More...
 
SimpleRefCount & operator= (const SimpleRefCount &o)
 Assignment. 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
 
bool GetAttributeFailSafe (std::string name, AttributeValue &attribute) const
 
void SetAttribute (std::string name, const AttributeValue &value)
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 

Static Public Member Functions

static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Queue
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::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void Cleanup (void)
 Noop. More...
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId (void)
 Get the type ID. More...
 

Private Member Functions

double CalculatePNew (double qAvg, double, bool gentle, double vA, double vB, double vC, double vD, double maxP)
 Returns a probability using these function parameters for the DropEarly function. More...
 
virtual Ptr< Packet > DoDequeue (void)
 Pull a packet from the queue. More...
 
virtual bool DoEnqueue (Ptr< Packet > p)
 Push a packet in the queue. More...
 
virtual Ptr< const Packet > DoPeek (void) const
 Peek the front packet in the queue. More...
 
uint32_t DropEarly (Ptr< Packet > p, uint32_t qSize)
 Check if packet p needs to be dropped due to probability mark. More...
 
double Estimator (uint32_t nQueued, uint32_t m, double qAvg, double qW)
 Compute the average queue size. More...
 
void InitializeParams (void)
 Initialize the queue parameters. More...
 
double ModifyP (double p, uint32_t count, uint32_t countBytes, uint32_t meanPktSize, bool wait, uint32_t size)
 Returns a probability using these function parameters for the DropEarly function. More...
 

Private Attributes

uint32_t m_bytesInQueue
 bytes in the queue More...
 
uint32_t m_cautious
 0 for default RED 1 experimental (see red-queue.cc) 2 experimental (see red-queue.cc) 3 use Idle packet size in the ptc More...
 
uint32_t m_count
 Number of packets since last random number generation. More...
 
uint32_t m_countBytes
 Number of bytes since last drop. More...
 
double m_curMaxP
 Current max_p. More...
 
bool m_hasRedStarted
 True if RED has started. More...
 
uint32_t m_idle
 0/1 idle status More...
 
uint32_t m_idlePktSize
 Avg pkt size used during idle times. More...
 
Time m_idleTime
 Start of current idle period. More...
 
bool m_isGentle
 True to increases dropping prob. More...
 
bool m_isNs1Compat
 Ns-1 compatibility. More...
 
bool m_isWait
 True for waiting between dropped packets. More...
 
DataRate m_linkBandwidth
 Link bandwidth. More...
 
Time m_linkDelay
 Link delay. More...
 
double m_lInterm
 The max probability of dropping a packet. More...
 
double m_maxTh
 Max avg length threshold (bytes), should be >= 2*minTh. More...
 
uint32_t m_meanPktSize
 Avg pkt size. More...
 
double m_minTh
 Min avg length threshold (bytes) More...
 
QueueMode m_mode
 Mode (Bytes or packets) More...
 
uint32_t m_old
 0 when average queue first exceeds threshold More...
 
std::list< Ptr< Packet > > m_packets
 packets in the queue More...
 
double m_ptc
 packet time constant in packets/second More...
 
double m_qAvg
 Average queue length. More...
 
uint32_t m_queueLimit
 Queue limit in bytes / packets. More...
 
double m_qW
 Queue weight given to cur queue size sample. More...
 
Stats m_stats
 RED statistics. More...
 
Ptr< UniformRandomVariable > m_uv
 rng stream More...
 
double m_vA
 1.0 / (m_maxTh - m_minTh) More...
 
double m_vB
 -m_minTh / (m_maxTh - m_minTh) More...
 
double m_vC
 (1.0 - m_curMaxP) / m_maxTh - used in "gentle" mode More...
 
double m_vD
 2.0 * m_curMaxP - 1.0 - used in "gentle" mode More...
 
double m_vProb
 Prob. More...
 
double m_vProb1
 Prob. More...
 

Additional Inherited Members

- Protected Member Functions inherited from ns3::Queue
void Drop (Ptr< Packet > packet)
 Drop a packet. More...
 
- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 
virtual void DoDispose (void)
 This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...
 
virtual void DoInitialize (void)
 This method is called only once by Object::Initialize. More...
 
virtual void NotifyNewAggregate (void)
 This method is invoked whenever two sets of objects are aggregated together. More...
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 
virtual void NotifyConstructionCompleted (void)
 This method is invoked once all member attributes have been initialized. More...
 

Detailed Description

A RED packet queue.

Config Paths

ns3::RedQueue is accessible through the following paths with Config::Set and Config::Connect:

  • /NodeList/[i]/DeviceList/[i]/$ns3::AlohaNoackNetDevice/Queue/$ns3::RedQueue
  • /NodeList/[i]/DeviceList/[i]/$ns3::CsmaNetDevice/TxQueue/$ns3::RedQueue
  • /NodeList/[i]/DeviceList/[i]/$ns3::EmuNetDevice/TxQueue/$ns3::RedQueue
  • /NodeList/[i]/DeviceList/[i]/$ns3::PointToPointNetDevice/TxQueue/$ns3::RedQueue
  • /NodeList/[i]/DeviceList/[i]/$ns3::SimpleNetDevice/TxQueue/$ns3::RedQueue

Attributes

  • Mode: Determines unit for QueueLimit
    • Set with class: ns3::EnumValue
    • Underlying type:
    • Initial value: QUEUE_MODE_PACKETS
    • Flags: construct write
  • MeanPktSize: Average of packet size
  • IdlePktSize: Average packet size used during idle times. Used when m_cautions = 3
  • Wait: True for waiting between dropped packets
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: true
    • Flags: construct write read
  • Gentle: True to increases dropping probability slowly when average queue exceeds maxthresh
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: true
    • Flags: construct write read
  • MinTh: Minimum average length threshold in packets/bytes
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 5
    • Flags: construct write read
  • MaxTh: Maximum average length threshold in packets/bytes
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 15
    • Flags: construct write read
  • QueueLimit: Queue limit in bytes/packets
  • QW: Queue weight related to the exponential weighted moving average (EWMA)
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 0.002
    • Flags: construct write read
  • LInterm: The maximum probability of dropping a packet
    • Set with class: ns3::DoubleValue
    • Underlying type: double -1.79769e+308:1.79769e+308
    • Initial value: 50
    • Flags: construct write read
  • Ns1Compat: NS-1 compatibility
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: false
    • Flags: construct write read
  • LinkBandwidth: The RED link bandwidth
    • Set with class: DataRateValue
    • Underlying type: DataRate
    • Initial value: 1500000bps
    • Flags: construct write read
  • LinkDelay: The RED link delay
    • Set with class: ns3::TimeValue
    • Underlying type: Time –9223372036854775808.0ns:+9223372036854775807.0ns
    • Initial value: +20000000.0ns
    • Flags: construct write read

No TraceSources are defined for this type.

TraceSources defined in parent class ns3::Queue

  • Enqueue: Enqueue a packet in the queue.
  • Dequeue: Dequeue a packet from the queue.
  • Drop: Drop a packet stored in the queue.

Definition at line 82 of file red-queue.h.

Member Enumeration Documentation

anonymous enum

Drop types.

Enumerator
DTYPE_NONE 

Ok, no drop.

DTYPE_FORCED 

A "forced" drop.

DTYPE_UNFORCED 

An "unforced" (random) drop.

Definition at line 117 of file red-queue.h.

Constructor & Destructor Documentation

ns3::RedQueue::RedQueue ( )

RedQueue Constructor.

Create a RED queue

Definition at line 150 of file red-queue.cc.

References m_uv, and NS_LOG_FUNCTION.

ns3::RedQueue::~RedQueue ( )
virtual

Destructor.

Destructor

Definition at line 160 of file red-queue.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

int64_t ns3::RedQueue::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 203 of file red-queue.cc.

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

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double ns3::RedQueue::CalculatePNew ( double  qAvg,
double  maxTh,
bool  gentle,
double  vA,
double  vB,
double  vC,
double  vD,
double  maxP 
)
private

Returns a probability using these function parameters for the DropEarly function.

Parameters
qAvgAverage queue length
maxThMax avg length threshold
gentle"gentle" algorithm
vAvA
vBvB
vCvC
vDvD
maxPmax_p
Returns
Prob. of packet drop before "count"

Definition at line 501 of file red-queue.cc.

References NS_LOG_FUNCTION.

Referenced by DropEarly().

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Ptr< Packet > ns3::RedQueue::DoDequeue ( void  )
privatevirtual

Pull a packet from the queue.

Returns
the packet.

Implements ns3::Queue.

Definition at line 612 of file red-queue.cc.

References ns3::Packet::GetSize(), m_bytesInQueue, m_idle, m_idleTime, m_packets, ns3::Simulator::Now(), NS_LOG_FUNCTION, and NS_LOG_LOGIC.

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bool ns3::RedQueue::DoEnqueue ( Ptr< Packet >  p)
privatevirtual

Push a packet in the queue.

Parameters
pthe packet to enqueue
Returns
true if success, false if the packet has been dropped.

Implements ns3::Queue.

Definition at line 211 of file red-queue.cc.

References ns3::Queue::Drop(), DropEarly(), DTYPE_FORCED, DTYPE_NONE, DTYPE_UNFORCED, Estimator(), ns3::RedQueue::Stats::forcedDrop, GetMode(), ns3::Packet::GetSize(), InitializeParams(), m_bytesInQueue, m_cautious, m_count, m_countBytes, m_hasRedStarted, m_idle, m_idlePktSize, m_idleTime, m_isGentle, m_isNs1Compat, m_maxTh, m_meanPktSize, m_minTh, m_old, m_packets, m_ptc, m_qAvg, m_queueLimit, m_qW, m_stats, m_vProb, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_INFO, NS_LOG_LOGIC, ns3::RedQueue::Stats::qLimDrop, ns3::Queue::QUEUE_MODE_BYTES, ns3::Queue::QUEUE_MODE_PACKETS, and ns3::RedQueue::Stats::unforcedDrop.

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Ptr< const Packet > ns3::RedQueue::DoPeek ( void  ) const
privatevirtual

Peek the front packet in the queue.

Returns
the packet.

Implements ns3::Queue.

Definition at line 641 of file red-queue.cc.

References m_bytesInQueue, m_packets, NS_LOG_FUNCTION, and NS_LOG_LOGIC.

uint32_t ns3::RedQueue::DropEarly ( Ptr< Packet >  p,
uint32_t  qSize 
)
private

Check if packet p needs to be dropped due to probability mark.

Parameters
ppacket
qSizequeue size
Returns
0 for no drop/mark, 1 for drop
Todo:
Implement set bit to mark

Definition at line 440 of file red-queue.cc.

References CalculatePNew(), ns3::Packet::GetSize(), ns3::UniformRandomVariable::GetValue(), m_cautious, m_count, m_countBytes, m_curMaxP, m_isGentle, m_isWait, m_maxTh, m_meanPktSize, m_ptc, m_qAvg, m_qW, m_uv, m_vA, m_vB, m_vC, m_vD, m_vProb, m_vProb1, ModifyP(), NS_LOG_FUNCTION, and NS_LOG_LOGIC.

Referenced by DoEnqueue().

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double ns3::RedQueue::Estimator ( uint32_t  nQueued,
uint32_t  m,
double  qAvg,
double  qW 
)
private

Compute the average queue size.

Parameters
nQueuednumber of queued packets
msimulated number of packets arrival during idle period
qAvgaverage queue size
qWqueue weight given to cur q size sample
Returns
new average queue size

Definition at line 420 of file red-queue.cc.

References NS_LOG_FUNCTION.

Referenced by DoEnqueue().

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RedQueue::QueueMode ns3::RedQueue::GetMode ( void  )

Get the encapsulation mode of this queue.

Get the encapsulation mode of this queue

Returns
The encapsulation mode of this queue.

Definition at line 173 of file red-queue.cc.

References m_mode, and NS_LOG_FUNCTION.

Referenced by DoEnqueue(), GetQueueSize(), ModifyP(), and RedQueueTestCase::RunRedTest().

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uint32_t ns3::RedQueue::GetQueueSize ( void  )

Get the current value of the queue in bytes or packets.

Returns
The queue size in bytes or packets.

Definition at line 594 of file red-queue.cc.

References GetMode(), m_bytesInQueue, m_packets, NS_ABORT_MSG, NS_LOG_FUNCTION, ns3::Queue::QUEUE_MODE_BYTES, and ns3::Queue::QUEUE_MODE_PACKETS.

Referenced by RedQueueTestCase::RunRedTest().

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RedQueue::Stats ns3::RedQueue::GetStats ( )

Get the RED statistics after running.

Returns
The drop statistics.

Definition at line 196 of file red-queue.cc.

References m_stats, and NS_LOG_FUNCTION.

TypeId ns3::RedQueue::GetTypeId ( void  )
static

Get the type ID.

Returns
the object TypeId

Definition at line 74 of file red-queue.cc.

References m_idlePktSize, m_isGentle, m_isNs1Compat, m_isWait, m_linkBandwidth, m_linkDelay, m_lInterm, m_maxTh, m_meanPktSize, m_minTh, m_queueLimit, m_qW, ns3::MakeEnumAccessor(), ns3::MakeEnumChecker(), ns3::MakeTimeChecker(), ns3::MilliSeconds(), ns3::Queue::QUEUE_MODE_BYTES, ns3::Queue::QUEUE_MODE_PACKETS, SetMode(), and ns3::TypeId::SetParent().

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void ns3::RedQueue::InitializeParams ( void  )
private

Initialize the queue parameters.

Note: if the link bandwidth changes in the course of the simulation, the bandwidth-dependent RED parameters do not change. This should be fixed, but it would require some extra parameters, and didn't seem worth the trouble...

Todo:
implement adaptive RED

Definition at line 341 of file red-queue.cc.

References ns3::RedQueue::Stats::forcedDrop, ns3::DataRate::GetBitRate(), ns3::Time::GetSeconds(), m_cautious, m_count, m_countBytes, m_curMaxP, m_idle, m_idleTime, m_isGentle, m_isWait, m_linkBandwidth, m_linkDelay, m_lInterm, m_maxTh, m_meanPktSize, m_minTh, m_old, m_ptc, m_qAvg, m_qW, m_stats, m_vA, m_vB, m_vC, m_vD, ns3::NanoSeconds(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::RedQueue::Stats::qLimDrop, and ns3::RedQueue::Stats::unforcedDrop.

Referenced by DoEnqueue().

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double ns3::RedQueue::ModifyP ( double  p,
uint32_t  count,
uint32_t  countBytes,
uint32_t  meanPktSize,
bool  wait,
uint32_t  size 
)
private

Returns a probability using these function parameters for the DropEarly function.

Parameters
pProb. of packet drop before "count"
countnumber of packets since last random number generation
countBytesnumber of bytes since last drop
meanPktSizeAvg pkt size
waitTrue for waiting between dropped packets
sizepacket size
Returns
Prob. of packet drop

Definition at line 542 of file red-queue.cc.

References GetMode(), NS_LOG_FUNCTION, and ns3::Queue::QUEUE_MODE_BYTES.

Referenced by DropEarly().

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void ns3::RedQueue::SetMode ( RedQueue::QueueMode  mode)

Set the operating mode of this queue.

Set operating mode

Parameters
modeThe operating mode of this queue.

Definition at line 166 of file red-queue.cc.

References m_mode, and NS_LOG_FUNCTION.

Referenced by GetTypeId().

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void ns3::RedQueue::SetQueueLimit ( uint32_t  lim)

Set the limit of the queue.

Parameters
limThe limit in bytes or packets.

Definition at line 180 of file red-queue.cc.

References m_queueLimit, and NS_LOG_FUNCTION.

Referenced by RedQueueTestCase::RunRedTest().

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void ns3::RedQueue::SetTh ( double  minTh,
double  maxTh 
)

Set the thresh limits of RED.

Parameters
minThMinimum thresh in bytes or packets.
maxThMaximum thresh in bytes or packets.

Definition at line 187 of file red-queue.cc.

References m_maxTh, m_minTh, NS_ASSERT, and NS_LOG_FUNCTION.

Referenced by RedQueueTestCase::RunRedTest().

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Member Data Documentation

uint32_t ns3::RedQueue::m_bytesInQueue
private

bytes in the queue

Definition at line 238 of file red-queue.h.

Referenced by DoDequeue(), DoEnqueue(), DoPeek(), and GetQueueSize().

uint32_t ns3::RedQueue::m_cautious
private

0 for default RED 1 experimental (see red-queue.cc) 2 experimental (see red-queue.cc) 3 use Idle packet size in the ptc

Definition at line 277 of file red-queue.h.

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

uint32_t ns3::RedQueue::m_count
private

Number of packets since last random number generation.

Definition at line 270 of file red-queue.h.

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

uint32_t ns3::RedQueue::m_countBytes
private

Number of bytes since last drop.

Definition at line 265 of file red-queue.h.

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

double ns3::RedQueue::m_curMaxP
private

Current max_p.

Definition at line 263 of file red-queue.h.

Referenced by DropEarly(), and InitializeParams().

bool ns3::RedQueue::m_hasRedStarted
private

True if RED has started.

Definition at line 239 of file red-queue.h.

Referenced by DoEnqueue().

uint32_t ns3::RedQueue::m_idle
private

0/1 idle status

Definition at line 267 of file red-queue.h.

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

uint32_t ns3::RedQueue::m_idlePktSize
private

Avg pkt size used during idle times.

Definition at line 245 of file red-queue.h.

Referenced by DoEnqueue(), and GetTypeId().

Time ns3::RedQueue::m_idleTime
private

Start of current idle period.

Definition at line 278 of file red-queue.h.

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

bool ns3::RedQueue::m_isGentle
private

True to increases dropping prob.

slowly when ave queue exceeds maxthresh

Definition at line 247 of file red-queue.h.

Referenced by DoEnqueue(), DropEarly(), GetTypeId(), and InitializeParams().

bool ns3::RedQueue::m_isNs1Compat
private

Ns-1 compatibility.

Definition at line 253 of file red-queue.h.

Referenced by DoEnqueue(), and GetTypeId().

bool ns3::RedQueue::m_isWait
private

True for waiting between dropped packets.

Definition at line 246 of file red-queue.h.

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

DataRate ns3::RedQueue::m_linkBandwidth
private

Link bandwidth.

Definition at line 254 of file red-queue.h.

Referenced by GetTypeId(), and InitializeParams().

Time ns3::RedQueue::m_linkDelay
private

Link delay.

Definition at line 255 of file red-queue.h.

Referenced by GetTypeId(), and InitializeParams().

double ns3::RedQueue::m_lInterm
private

The max probability of dropping a packet.

Definition at line 252 of file red-queue.h.

Referenced by GetTypeId(), and InitializeParams().

double ns3::RedQueue::m_maxTh
private

Max avg length threshold (bytes), should be >= 2*minTh.

Definition at line 249 of file red-queue.h.

Referenced by DoEnqueue(), DropEarly(), GetTypeId(), InitializeParams(), and SetTh().

uint32_t ns3::RedQueue::m_meanPktSize
private

Avg pkt size.

Definition at line 244 of file red-queue.h.

Referenced by DoEnqueue(), DropEarly(), GetTypeId(), and InitializeParams().

double ns3::RedQueue::m_minTh
private

Min avg length threshold (bytes)

Definition at line 248 of file red-queue.h.

Referenced by DoEnqueue(), GetTypeId(), InitializeParams(), and SetTh().

QueueMode ns3::RedQueue::m_mode
private

Mode (Bytes or packets)

Definition at line 243 of file red-queue.h.

Referenced by GetMode(), and SetMode().

uint32_t ns3::RedQueue::m_old
private

0 when average queue first exceeds threshold

Definition at line 266 of file red-queue.h.

Referenced by DoEnqueue(), and InitializeParams().

std::list<Ptr<Packet> > ns3::RedQueue::m_packets
private

packets in the queue

Definition at line 236 of file red-queue.h.

Referenced by DoDequeue(), DoEnqueue(), DoPeek(), and GetQueueSize().

double ns3::RedQueue::m_ptc
private

packet time constant in packets/second

Definition at line 268 of file red-queue.h.

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

double ns3::RedQueue::m_qAvg
private

Average queue length.

Definition at line 269 of file red-queue.h.

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

uint32_t ns3::RedQueue::m_queueLimit
private

Queue limit in bytes / packets.

Definition at line 250 of file red-queue.h.

Referenced by DoEnqueue(), GetTypeId(), and SetQueueLimit().

double ns3::RedQueue::m_qW
private

Queue weight given to cur queue size sample.

Definition at line 251 of file red-queue.h.

Referenced by DoEnqueue(), DropEarly(), GetTypeId(), and InitializeParams().

Stats ns3::RedQueue::m_stats
private

RED statistics.

Definition at line 240 of file red-queue.h.

Referenced by DoEnqueue(), GetStats(), and InitializeParams().

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

rng stream

Definition at line 280 of file red-queue.h.

Referenced by AssignStreams(), DropEarly(), and RedQueue().

double ns3::RedQueue::m_vA
private

1.0 / (m_maxTh - m_minTh)

Definition at line 259 of file red-queue.h.

Referenced by DropEarly(), and InitializeParams().

double ns3::RedQueue::m_vB
private

-m_minTh / (m_maxTh - m_minTh)

Definition at line 260 of file red-queue.h.

Referenced by DropEarly(), and InitializeParams().

double ns3::RedQueue::m_vC
private

(1.0 - m_curMaxP) / m_maxTh - used in "gentle" mode

Definition at line 261 of file red-queue.h.

Referenced by DropEarly(), and InitializeParams().

double ns3::RedQueue::m_vD
private

2.0 * m_curMaxP - 1.0 - used in "gentle" mode

Definition at line 262 of file red-queue.h.

Referenced by DropEarly(), and InitializeParams().

double ns3::RedQueue::m_vProb
private

Prob.

of packet drop

Definition at line 264 of file red-queue.h.

Referenced by DoEnqueue(), and DropEarly().

double ns3::RedQueue::m_vProb1
private

Prob.

of packet drop before "count"

Definition at line 258 of file red-queue.h.

Referenced by DropEarly().

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