30 #include "ns3/uinteger.h"
31 #include "ns3/double.h"
32 #include "ns3/simulator.h"
33 #include "ns3/abort.h"
35 #include "ns3/drop-tail-queue.h"
36 #include "ns3/net-device-queue-interface.h"
48 .SetGroupName (
"TrafficControl")
50 .AddAttribute (
"Mode",
51 "Determines unit for QueueLimit",
56 .AddAttribute (
"MeanPktSize",
57 "Average of packet size",
60 MakeUintegerChecker<uint32_t> ())
65 MakeDoubleChecker<double> ())
70 MakeDoubleChecker<double> ())
71 .AddAttribute (
"Tupdate",
72 "Time period to calculate drop probability",
76 .AddAttribute (
"Supdate",
77 "Start time of the update timer",
81 .AddAttribute (
"QueueLimit",
82 "Queue limit in bytes/packets",
85 MakeUintegerChecker<uint32_t> ())
86 .AddAttribute (
"DequeueThreshold",
87 "Minimum queue size in bytes before dequeue rate is measured",
90 MakeUintegerChecker<uint32_t> ())
91 .AddAttribute (
"QueueDelayReference",
92 "Desired queue delay",
96 .AddAttribute (
"MaxBurstAllowance",
97 "Current max burst allowance in seconds before random drop",
110 m_uv = CreateObject<UniformRandomVariable> ();
251 bool earlyDrop =
true;
284 bool missingInitFlag =
false;
292 missingInitFlag =
true;
402 uint32_t pktSize = item->GetSize ();
484 NS_LOG_ERROR (
"PieQueueDisc cannot have packet filters");
512 NS_LOG_ERROR (
"The mode of the provided queue does not match the mode set on the PieQueueDisc");
519 NS_LOG_ERROR (
"The size of the internal queue differs from the queue disc limit");
QueueDiscMode GetMode(void)
Get the operating mode of this queue disc.
uint32_t m_dqCount
Number of bytes departed since current measurement cycle starts.
Simulation virtual time values and global simulation resolution.
Time m_tUpdate
Time period after which CalculateP () is called.
uint32_t GetNQueueDiscClasses(void) const
Get the number of queue disc classes.
Smart pointer class similar to boost::intrusive_ptr.
#define NS_LOG_FUNCTION(parameters)
If log level LOG_FUNCTION is enabled, this macro will output all input parameters separated by "...
void SetStream(int64_t stream)
Specifies the stream number for the RngStream.
#define NS_ABORT_MSG(msg)
Unconditional abnormal program termination with a message.
void SetMode(QueueDiscMode mode)
Set the operating mode of this queue disc.
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...
QueueDiscMode m_mode
Mode (bytes or packets)
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
double m_avgDqRate
Time averaged dequeue rate.
Time m_maxBurst
Maximum burst allowed before random early dropping kicks in.
virtual Ptr< const QueueDiscItem > DoPeek(void) const
This function returns a copy of the next packet the queue disc will extract.
double m_a
Parameter to pie controller.
uint32_t GetNBytes(void) const
Get the amount of bytes stored by the queue disc.
Ptr< const AttributeAccessor > MakeEnumAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method...
static constexpr const char * FORCED_DROP
Drops due to queue limit: reactive.
virtual void InitializeParams(void)
Initialize the queue parameters.
Use number of packets for maximum queue disc size.
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
uint32_t m_burstReset
Used to reset value of burst allowance.
static constexpr const char * UNFORCED_DROP
Early probability drops: proactive.
void(* Time)(Time oldValue, Time newValue)
TracedValue callback signature for Time.
QueueDisc is an abstract base class providing the interface and implementing the operations common to...
Implements PIE Active Queue Management discipline.
Time m_qDelayRef
Desired queue delay.
Use number of packets for maximum queue size.
double m_dropProb
Variable used in calculation of drop probability.
uint32_t m_meanPktSize
Average packet size in bytes.
void SetQueueLimit(uint32_t lim)
Set the limit of the queue in bytes or packets.
Ptr< InternalQueue > GetInternalQueue(uint32_t i) const
Get the i-th internal queue.
Ptr< const AttributeChecker > MakeTimeChecker(const Time min, const Time max)
Helper to make a Time checker with bounded range.
double GetSeconds(void) const
Get an approximation of the time stored in this instance in the indicated unit.
uint32_t GetNInternalQueues(void) const
Get the number of internal queues.
void AddInternalQueue(Ptr< InternalQueue > queue)
Add an internal queue to the tail of the list of queues.
Time GetQueueDelay(void)
Get queue delay.
Hold variables of type enum.
static EventId Schedule(Time const &delay, MEM mem_ptr, OBJ obj)
Schedule an event to expire after delay.
virtual bool CheckConfig(void)
Check whether the current configuration is correct.
AttributeValue implementation for Time.
Hold an unsigned integer type.
Time m_sUpdate
Start time of the update timer.
uint32_t m_dqThreshold
Minimum queue size in bytes before dequeue rate is measured.
#define BURST_RESET_TIMEOUT
virtual void DoDispose(void)
Dispose of the object.
Time m_qDelayOld
Old value of queue delay.
uint32_t GetNPacketFilters(void) const
Get the number of packet filters.
double m_dqStart
Start timestamp of current measurement cycle.
bool DropEarly(Ptr< QueueDiscItem > item, uint32_t qSize)
Check if a packet needs to be dropped due to probability drop.
virtual void DoDispose(void)
Dispose of the object.
QueueDiscMode
Enumeration of the modes supported in the class.
void CalculateP()
Periodically update the drop probability based on the delay samples: not only the current delay sampl...
static void Remove(const EventId &id)
Remove an event from the event list.
Every class exported by the ns3 library is enclosed in the ns3 namespace.
uint32_t GetQueueSize(void)
Get the current value of the queue in bytes or packets.
EventId m_rtrsEvent
Event used to decide the decision of interval of drop probability calculation.
Use number of bytes for maximum queue size.
Ptr< const AttributeAccessor > MakeTimeAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method...
static Time Now(void)
Return the current simulation virtual time.
Ptr< UniformRandomVariable > m_uv
Rng stream.
NS_LOG_LOGIC("Net device "<< nd<< " is not bridged")
PieQueueDisc()
PieQueueDisc Constructor.
Ptr< const AttributeAccessor > MakeDoubleAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method...
virtual Ptr< QueueDiscItem > DoDequeue(void)
This function actually extracts a packet from the queue disc.
int64_t AssignStreams(int64_t stream)
Assign a fixed random variable stream number to the random variables used by this model...
Ptr< const AttributeChecker > MakeEnumChecker(int v1, std::string n1, int v2, std::string n2, int v3, std::string n3, int v4, std::string n4, int v5, std::string n5, int v6, std::string n6, int v7, std::string n7, int v8, std::string n8, int v9, std::string n9, int v10, std::string n10, int v11, std::string n11, int v12, std::string n12, int v13, std::string n13, int v14, std::string n14, int v15, std::string n15, int v16, std::string n16, int v17, std::string n17, int v18, std::string n18, int v19, std::string n19, int v20, std::string n20, int v21, std::string n21, int v22, std::string n22)
Make an EnumChecker pre-configured with a set of allowed values by name.
Time m_qDelay
Current value of queue delay.
static TypeId GetTypeId(void)
Get the type ID.
BurstStateT m_burstState
Used to determine the current state of burst.
Time Seconds(double value)
Construct a Time in the indicated unit.
Time m_burstAllowance
Current max burst value in seconds that is allowed before random drops kick in.
virtual ~PieQueueDisc()
PieQueueDisc Destructor.
#define NS_LOG_ERROR(msg)
Use NS_LOG to output a message of level LOG_ERROR.
static const uint32_t packetSize
virtual bool DoEnqueue(Ptr< QueueDiscItem > item)
This function actually enqueues a packet into the queue disc.
uint32_t m_queueLimit
Queue limit in bytes / packets.
Use number of bytes for maximum queue disc size.
This class can be used to hold variables of floating point type such as 'double' or 'float'...
double m_b
Parameter to pie controller.
Ptr< const AttributeAccessor > MakeUintegerAccessor(T1 a1)
Create an AttributeAccessor for a class data member, or a lone class get functor or set method...
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
Set the parent TypeId.
uint32_t GetNPackets(void) const
Get the number of packets stored by the queue disc.
bool m_inMeasurement
Indicates whether we are in a measurement cycle.